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  • Inorganic Chemistry  (832)
  • General Chemistry  (793)
  • Cell & Developmental Biology
  • Fisheries
  • 2010-2014  (22)
  • 1935-1939
  • 1925-1929  (1,654)
  • 2010  (22)
  • 1925  (1,654)
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  • 2010-2014  (22)
  • 1935-1939
  • 1925-1929  (1,654)
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  • 1
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    Ctenochaetus marginatus (Valenciennes) (Pisces: Acanthuridae) en la Isla de Gorgona: Primer registro del género para el Pacífico colombiano (2010)
    Santa Marta (Colombia), INVEMAR
    Details
    Publication Date: 2021-05-19
    Description: The genus Ctenochaetus is reportad in the waters of the Colombian Pacific based on two specimens of C. marginatus (Valenciennes) collected in 1993 at Gorgona Island (2°59' N, 78° 12' W). These specimens differ inseveral morphometric characteristics from thosepreviously examined. Such differences appear to be an artifact of the small number of specimens formerly examined and the consequent narrow ranges reportad. We suggest that temperature variability affects the distribution of C. marginatus in the tropical eastern Pacific.
    Description: El género es Ctenochaetus reportad en las aguas del Pacífico colombiano a partir de dos especímenes de C. marginatus (Valenciennes) recogidos en 1993 en la Isla Gorgona (2 ° 59 'N, 78 ° 12' W). Estos ejemplares difieren inseveral características morfométricas de thosepreviously examinados. Estas diferencias parecen ser un artefacto del pequeño número de muestras examinadas anteriormente y reportad los rangos estrechos consecuente. Sugerimos que la variabilidad de la temperatura afecta la distribución de marginatus C en el Pacífico tropical oriental.
    Description: Published
    Keywords: Fisheries ; Fisheries
    Repository Name: AquaDocs
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  • 2
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    Tensores naturales y antrópicos al norte de Villa Clara, Cuba; efectos en la producción de ostión (crassostrea rhizophorae, Guilding, 1828) (2010)
    Details
    Publication Date: 2021-05-19
    Description: Production of mangrove oyster (Crassostrea rhizophorae Guilding, 1828), north of Villa Clara, Cuba Province, tends to decline since 1980, accentuating from 2003 on. Despite regulations to protect the resource, minimum legal size and catch closures, the year 2008 presents the landing smaller volumes of the past 50 years. An analysis of the variability of catches in relation to natural and human factors, allows for precipitating causes of low productivity of this fishery resource; between the most representatives are expanding storage capacity of river water, salinity increment, the increase in frequency and intensity of hurricanes and the mismanagement of the extraction of oyster.
    Description: La producción de ostión de mangle (Crassostrea rhizophorae, Guilding, 1828), al norte de la provincia de Villa Clara, Cuba, tiende a la disminución desde de 1980, acentuándose a partir del año 2003. A pesar de regulaciones para la protección del recurso, talla mínima legal y vedas de captura, el año 2008 presenta los menores volúmenes de desembarque de los últimos 50 años. Un análisis de la variabilidad de las capturas, en relación con factores naturales y antrópicos, permite establecer causas desencadenantes de la baja productividad de este recurso pesquero; las más representativas son, la ampliación en la capacidad de embalse de aguas fluviales, aumentos de la salinidad, el incremento en la frecuencia e intensidad de los huracanes y un manejo inadecuado de la actividad extractiva de ostión.
    Description: Crassostrea rhizophorae, Cuba
    Keywords: Fisheries ; Environmental effects ; Fisheries
    Repository Name: AquaDocs
    Type: Preprint
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  • 3
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    Fauna asociada a la pesca del mero Epinephelus Morio (serranidae: pisces) con palangre de fondo en el Banco de Campeche, México. (2010)
    Details
    Publication Date: 2021-05-19
    Description: Se efectúa un estudio de la fauna acompañante del Mero, Epinephelus morio, en la pesquería con palangre de fondo del Banco de Campeche, México, durante el periodo 1987-2009. En la investigación se consideró información de 32 cruceros de investigación realizados en la etapa como parte del convenio pesquero firmado por Cuba y México para la evaluación sistemática del recurso. Se determinó la composición por especie y talla de las capturas, sus variaciones en la abundancia relativa, estructura de tallas, así como el índice de diversidad de Brillouin, la riqueza de especies (Margalef, 1980), la dominancia numérica y la constancia, estas ultimas valoradas según el esquema propuesto por Bodenheimer (1955). Se encontró que la fauna acompáñate de E. morio esta representada por 69 especies, agrupadas en 3 clases y 12 órdenes. De ellos, el orden mejor representado lo constituyó Perciformes con las familias Serranidae, Lutjanidae, Scombridae, Carangidae y Haemulidae como las más abundantes en número. Dentro de estas, dominaron las especies L. campechanus y O. chrysurus, apreciándose que las entidades mejor representadas son, L. campechanus (100%), O. chrysurus (96,87%) y M. bonaci (73,2%). Los largos medios observados se encontraron por encima de las tallas de primera maduración reportadas en la literatura. Sólo E. nigritus y L. analis presentaron individuos inmaduros. Se reportan tallas máximas superiores a las reportadas en la bibliografía en M. interstitiaslis (150cm), M. bonací (155cm) y E. nigritus (125cm). Se determinó que el rendimiento (cpue) y la diversidad de la fauna acompañante poseen una relación inversa con la disminución de la biomasa de mero. Por su parte, la diversidad y riqueza de especie presentaron sus mayores valores concordando con las temporadas de lluvias.
    Description: Mero Epinephelus morio, fauna acompañante, Banco de Campeche, México,
    Keywords: Fisheries ; Fauna ; Fisheries ; Fauna
    Repository Name: AquaDocs
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  • 4
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    Etude environnementale et sociale du PRAO (Cap Vert, Sierra Léone, Libéria, Sénégal) (2010)
    Details
    Publication Date: 2021-05-19
    Description: La Commission Sous Régionale des Pêches (CSRP), qui est un organisme intergouvernemental de coopération halieutique dont l’objectif global est l’harmonisation à long terme, des politiques des pays membres en matière de préservation, de conservation et d'exploitation durable de leurs ressources halieutiques et le renforcement de leur coopération au profit du bien-être de leurs populations respectives, a obtenu par l’intermédiaire de la Banque mondiale, un Don du Fonds pour l’Environnement Mondial (FEM) et du Gouvernement du Japon, pour la préparation d’un Projet Régional des Pêches en Afrique de l’Ouest (PRAO) pour trouver une solution à la problématique susvisée. Ce projet implique 9 pays côtiers: la Mauritanie, le Cap Vert, le Sénégal, la Gambie, la Guinée Bissau, la Guinée, le Sierra Léone (Etats membres de la CSRP), ainsi que le Libéria et le Ghana. Le PRAO comprend trois composantes : (1) Bonne Gouvernance et Gestion Durable des Pêches ; (2) Réduction de la Pêche Illicite ; (3) Augmentation de la Contribution des Ressources Halieutiques dans les Economies Locales (incluant la réalisation d’infrastructures et équipements dans les pêcheries). Certes, les activités prévues dans le cadre du PRAO sont pressenties pour contribuer au développement du secteur de la pêche dans les pays ciblés et apporter des bénéfices aux populations locales. Toutefois, elles pourraient engendrer dans certains cas des effets négatifs aux niveaux environnemental et social (notamment celles prévues dans la composante 3), si des mesures adéquates ne sont pas prises au préalable. Afin de minimiser ces effets défavorables, il a été requis l’élaboration de la présente Evaluation Environnementale et Sociale (EES).
    Description: Commission Sous Régionale des Pêches (CSRP)
    Description: Published
    Description: ressource marine, ressource côtière, politique de pêhce, environnement, qualité des produits, pollution, gestion des pêches,aire marine protégée
    Keywords: Marine resources ; Fisheries ; Fishery management ; Coastal fisheries ; Quality assurance ; Environment management ; Marine resources ; Fisheries ; Fishery management ; Coastal fisheries ; Coastal zone ; Fishery regulations ; Fishery economics ; Marine pollution ; Quality control ; Illegal fishing ; Fishery organizations ; Quality assurance
    Repository Name: AquaDocs
    Type: Report
    Format: 111
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  • 5
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    Aspectos biológicos del Calamar Argentino Illex argentinus (Castellanos) capturado por la flota cubana de pesca en el talud patagónico durante 1987 (2010)
    Santa Marta (Colombia), INVEMAR
    Details
    Publication Date: 2021-05-19
    Description: En 1987, se inicia un programa de muestreos biológicos del calamar argentino ///ex argentinas a bordo de barcos comerciales de la flota cubana de pesca que operan en la plataforma patagónica. La talla de los organismos para ambos sexos presenta un comportamiento estratificado por profundidades, los ejemplares de mayor tamaño se encuentran a profundidades superiores y viceversa, lo cual se ajusta a una recta de regresión (r2 = 0.88; a = 0.05). Las hembras alcanzaron largos promedio del manto superior a los machos, incrementándose la presencia de machos en las capturas desde enero a abril. Se estimaron los largos promedio de primera maduración, como 20.5 y 26.5 cm de largo del manto para machos y hembras respectivamente. Se observó un aumento de la proporción de individuos maduros de febrero a abril, haciéndose más marcado este fenómeno en los machos, que en su mayoría presentaban abundantes espermatóforos en el saco. Se obtuvo la relación largo-peso para hembras y machos y para la combinación de ambos sexos.
    Description: In 1987 a program for the biological sampling of squid ///ex argentinas, was begun on board of a fishing ship belonging to the Cuban Fisheries-Fleet, wich operates in the Patagonian Shelf. The lengths of both sexes presented a estratified pattern with individuals of larger size found in higher depths and viceversa; this pattern is adjusted to a regression line (r2 = 0.88; a = 0.05). Pernales reached average length larger (han males and the rate of males in catches increased from january to april. The first maturation average length was estimated about 20.5 cm for males and 26.5 cm for females. An increase of the rate of mature individuals was observed between february and april emphazasing ¡n males which showed abundant espermatophores in the sac.
    Description: Published
    Description: squid, Flota Cubana
    Keywords: Fisheries ; Squid culture ; Biological charts ; Biological data ; Fisheries ; Squid culture
    Repository Name: AquaDocs
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  • 6
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    Etude sur le savoir écologique des pêcheurs artisans des petits pélagiques en Afrique du Nord-Ouest (2010)
    Details
    Publication Date: 2021-05-19
    Description: Agriculture, Nature and Food Quality, Den Haag (Netherlands); Ministerie Van Buitenlandse Zaken, Brussel (Belgium); Wageningen International, Wageningen (Netherlands)
    Description: Projet BBI 13286 : Pêche durable des petits pélagiques en Afrique Nord Ouest Ce rapport a été préparé avec le soutien financier de la Coopération néerlandaise (DGIS) dans le cadre de son Programme de politique internationale en matière de biodiversité (BBI).
    Description: Published
    Description: pêche traditionnelle; taille; échantillonnage; écosystème; upwelling; biomasse; filet maillant dérivant; senne tournante; senne moustiquaire; senne de plage; maquereau; chinchard; sardinelle; ethmalose; reproduction; courant; stocks; réglementation; pêche par espéce; engin de pêche; pélagique; zone côtière; pirogue; pêche artisanale; pêcheur
    Keywords: Biomass ; Ecosystems ; Fisheries ; Fishermen ; Stocks ; Ocean currents ; Winds ; Size ; Fishing effort ; Pelagic fisheries ; Sexual reproduction ; Multispecies fisheries ; Fisheries ; Artisanal fishing ; Fishermen ; Fishing effort ; Canoe fisheries ; Coastal zone ; Fishery engineering ; Protected resources ; Pelagic fisheries ; Cycles ; Sexual reproduction ; Multispecies fisheries ; Stocks ; Ocean currents ; Winds ; Biomass ; Upwelling ; Ecosystems ; Maritime legislation ; Size
    Repository Name: AquaDocs
    Type: Report
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  • 7
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    Spillover from marine reserves and the replenishment of fished stocks (2010)
    Cambridge University Press
    Details
    Publication Date: 2022-05-26
    Description: Author Posting. © Foundation for Environmental Conservation, 2009. This article is posted here by permission of Cambridge University Press for personal use, not for redistribution. The definitive version was published in Environmental Conservation 36 (2009): 268-276, doi:10.1017/S0376892910000032.
    Description: No-take marine reserves are widely recognized as an effective conservation tool for protecting marine resources. Despite considerable empirical evidence that abundance and biomass of fished species increase within marine reserve boundaries, the potential for reserves to provide fisheries and conservation benefits to adjacent waters remains heavily debated. This paper uses statistical and population models to evaluate published empirical data on adult spillover from marine reserves and shows that spillover is a common phenomenon for species that respond positively to reserve protection, but at relatively small scales, detectable on average up to 800 m from reserve boundaries. At these small scales, local fisheries around reserves were likely unsustainable in 12 of 14 cases without the reserve, and spillover partially or fully offsets losses in catch due to reserve closure in the other two cases. For reserves to play a role in sustaining and replenishing larger-scale fished stocks, networks of reserves may be necessary, but as few exist this is difficult to evaluate. The results suggest reserves can simultaneously meet conservation objectives and benefit local fisheries adjacent to their boundaries.
    Description: Support was provided by a grant from the David and Lucille Packard Foundation to NCEAS for ecosystem-based management ofmarine systems, the Partnership for Interdisciplinary Studies of Coastal Oceans (PISCO) funded by the David and Lucile Packard Foundation and the Gordon and Betty Moore Foundation (contribution number 348), the Sustainable Fisheries Group supported by the Paul G. Allen Family Foundation and the Bahamas Biocomplexity Project (US NSF Biocomplexity grantOCE-0119976) andUS EPA Science to Achieve Results (R832223).
    Keywords: Adult fish movement ; Fisheries ; Global ; Marine protected areas ; No-take reserves ; Spillover effect ; Synthesis
    Repository Name: Woods Hole Open Access Server
    Type: Article
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  • 8
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    Water resources: Beyond infrastructure (2010)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2010-10-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Palmer, Margaret A -- England -- Nature. 2010 Sep 30;467(7315):534-5. doi: 10.1038/467534a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20881999" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biodiversity ; *Conservation of Natural Resources/methods/statistics & numerical data ; Fisheries ; *Internationality ; Peru ; Population Density ; *Rivers ; *Water Supply
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 9
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    Water: act now to restore river health (2010)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2010-11-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dugan, Patrick -- Allison, Edward H -- England -- Nature. 2010 Nov 11;468(7321):173. doi: 10.1038/468173b.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21068813" target="_blank"〉PubMed〈/a〉
    Keywords: Biodiversity ; Conservation of Natural Resources/*methods ; Fisheries ; Food Supply/statistics & numerical data ; Internationality ; Rivers/*chemistry ; Vietnam ; Water Supply/*standards
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 10
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    Disasters. Scenario-building for the Deepwater Horizon oil spill (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-08-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Machlis, Gary E -- McNutt, Marcia K -- New York, N.Y. -- Science. 2010 Aug 27;329(5995):1018-9. doi: 10.1126/science.1195382.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Strategic Sciences Working Group, U.S. Department of the Interior, Washington, DC 20024, USA. gary_machlis@nps.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20798302" target="_blank"〉PubMed〈/a〉
    Keywords: *Accidents ; Animals ; Atlantic Ocean ; Decision Making ; *Disasters ; *Ecosystem ; Environmental Pollution ; Fisheries ; Forecasting ; Interdisciplinary Communication ; *Petroleum ; Planning Techniques ; Public Policy ; United States ; United States Government Agencies ; Wetlands
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 11
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    Trophic structure and community stability in an overfished ecosystem (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-07-22
    Description: Since the collapse of the pelagic fisheries off southwest Africa in the late 1960s, jellyfish biomass has increased and the structure of the Benguelan fish community has shifted, making the bearded goby (Sufflogobius bibarbatus) the new predominant prey species. Despite increased predation pressure and a harsh environment, the gobies are thriving. Here we show that physiological adaptations and antipredator and foraging behaviors underpin the success of these fish. In particular, body-tissue isotope signatures reveal that gobies consume jellyfish and sulphidic diatomaceous mud, transferring "dead-end" resources back into the food chain.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Utne-Palm, Anne C -- Salvanes, Anne G V -- Currie, Bronwen -- Kaartvedt, Stein -- Nilsson, Goran E -- Braithwaite, Victoria A -- Stecyk, Jonathan A W -- Hundt, Matthias -- van der Bank, Megan -- Flynn, Bradley -- Sandvik, Guro K -- Klevjer, Thor A -- Sweetman, Andrew K -- Bruchert, Volker -- Pittman, Karin -- Peard, Kathleen R -- Lunde, Ida G -- Strandabo, Ronnaug A U -- Gibbons, Mark J -- New York, N.Y. -- Science. 2010 Jul 16;329(5989):333-6. doi: 10.1126/science.1190708.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, University of Bergen, Bergen, Norway. anne.palm@bio.uib.no〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20647468" target="_blank"〉PubMed〈/a〉
    Keywords: *Adaptation, Physiological ; Anaerobiosis ; Animals ; Bacteria ; Behavior, Animal ; Biomass ; Cardiovascular Physiological Phenomena ; Digestion ; *Ecosystem ; Feeding Behavior ; Fisheries ; Fishes/physiology ; *Food Chain ; Geologic Sediments/microbiology ; Hydrogen Sulfide/analysis ; Namibia ; Oxygen/analysis ; Oxygen Consumption ; Perciformes/*physiology ; Population Dynamics ; Predatory Behavior ; *Scyphozoa ; Seawater/chemistry
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 12
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    Ecology. Europe tries to save its eels (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-07-31
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vogel, Gretchen -- New York, N.Y. -- Science. 2010 Jul 30;329(5991):505-7. doi: 10.1126/science.329.5991.505.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20671166" target="_blank"〉PubMed〈/a〉
    Keywords: Animal Migration ; Animals ; *Conservation of Natural Resources ; Ecosystem ; *Eels/anatomy & histology/growth & development/physiology ; Europe ; Fisheries ; Politics ; Population Dynamics ; Reproduction
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 13
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    Gulf oil disaster. Five questions on the spill (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-05-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kerr, Richard A -- Kintisch, Eli -- Schenkman, Lauren -- Stokstad, Erik -- New York, N.Y. -- Science. 2010 May 21;328(5981):962-3. doi: 10.1126/science.328.5981.962.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20489000" target="_blank"〉PubMed〈/a〉
    Keywords: *Accidents ; Animals ; Atlantic Ocean ; *Disasters ; *Ecosystem ; Environmental Monitoring ; *Environmental Pollution ; Fisheries ; Food Chain ; *Petroleum ; Plants ; Wetlands
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 14
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    Conservation biology. Trade trumps science for marine species at international meeting (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-04-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stokstad, Erik -- New York, N.Y. -- Science. 2010 Apr 2;328(5974):26-7. doi: 10.1126/science.328.5974.26-a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20360076" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Commerce ; *Conservation of Natural Resources ; *Endangered Species ; Fisheries ; International Cooperation ; Population Dynamics ; *Sharks ; *Tuna
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 15
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    Ecosystem management. Science meets politics off California's coast (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-03-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stokstad, Erik -- New York, N.Y. -- Science. 2010 Mar 26;327(5973):1574-5. doi: 10.1126/science.327.5973.1574.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20339047" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; California ; *Conservation of Natural Resources/economics/legislation & jurisprudence ; *Ecosystem ; Fisheries ; *Fishes ; Guidelines as Topic ; Models, Biological ; Models, Economic ; Pacific Ocean ; Politics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 16
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    Marine ecology. Key indicator of ocean health may be flawed (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-11-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stokstad, Erik -- New York, N.Y. -- Science. 2010 Nov 19;330(6007):1029. doi: 10.1126/science.330.6007.1029.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21097908" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biodiversity ; Environmental Monitoring/*methods ; Fisheries ; *Fishes ; Food Chain ; Marine Biology/*methods ; Oceans and Seas
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 17
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    Conservation biology. Last stand on the Yangtze (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-07-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stone, Richard -- New York, N.Y. -- Science. 2010 Jul 23;329(5990):378. doi: 10.1126/science.329.5990.378.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20651127" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; China ; *Conservation of Natural Resources ; *Ecosystem ; *Endangered Species ; Extinction, Biological ; Female ; Fisheries ; *Fishes ; Human Activities ; Humans ; Male ; Population Dynamics ; *Porpoises ; *Rivers
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Marine biology: Out of the blue (2010)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2010-10-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cressey, Daniel -- England -- Nature. 2010 Sep 30;467(7315):514-5. doi: 10.1038/467514a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20881987" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biodiversity ; Conservation of Natural Resources/methods/trends ; *Data Collection/economics ; Fisheries ; *Marine Biology/economics ; Population Density ; Time Factors
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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    Global threats to human water security and river biodiversity (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-10-01
    Description: Protecting the world's freshwater resources requires diagnosing threats over a broad range of scales, from global to local. Here we present the first worldwide synthesis to jointly consider human and biodiversity perspectives on water security using a spatial framework that quantifies multiple stressors and accounts for downstream impacts. We find that nearly 80% of the world's population is exposed to high levels of threat to water security. Massive investment in water technology enables rich nations to offset high stressor levels without remedying their underlying causes, whereas less wealthy nations remain vulnerable. A similar lack of precautionary investment jeopardizes biodiversity, with habitats associated with 65% of continental discharge classified as moderately to highly threatened. The cumulative threat framework offers a tool for prioritizing policy and management responses to this crisis, and underscores the necessity of limiting threats at their source instead of through costly remediation of symptoms in order to assure global water security for both humans and freshwater biodiversity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vorosmarty, C J -- McIntyre, P B -- Gessner, M O -- Dudgeon, D -- Prusevich, A -- Green, P -- Glidden, S -- Bunn, S E -- Sullivan, C A -- Liermann, C Reidy -- Davies, P M -- England -- Nature. 2010 Sep 30;467(7315):555-61. doi: 10.1038/nature09440.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Environmental CrossRoads Initiative, City University of New York, The City College of New York, New York, New York 10035, USA. contact@riverthreat.net〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20882010" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biodiversity ; Conservation of Natural Resources/methods/*statistics & numerical data ; Fisheries ; Geography ; *Internationality ; Population Density ; *Rivers ; *Water Supply
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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    The status of Atlantic bluefin tuna (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-06-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Losada, Sebastian -- Lieberman, Susan -- Drews, Carlos -- Hirshfield, Michael -- New York, N.Y. -- Science. 2010 Jun 11;328(5984):1353; author reply 1353-4. doi: 10.1126/science.328.5984.1353-a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20538932" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Commerce ; *Endangered Species ; Fisheries ; International Cooperation ; *Tuna
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Gulf oil spill. Will Deepwater Horizon set a new standard for catastrophe? (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-05-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kerr, Richard -- Kintisch, Eli -- Stokstad, Erik -- New York, N.Y. -- Science. 2010 May 7;328(5979):674-5. doi: 10.1126/science.328.5979.674.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20448155" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Disasters ; *Ecosystem ; Environmental Pollution ; *Environmental Restoration and Remediation ; Fisheries ; *Petroleum ; United States ; *Water Pollution ; Wetlands
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Ecology. How a little fish keeps overfished ecosystem productive (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-07-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, Elizabeth -- New York, N.Y. -- Science. 2010 Jul 16;329(5989):268. doi: 10.1126/science.329.5989.268.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20647437" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacteria ; *Ecosystem ; Fisheries ; *Food Chain ; Geologic Sediments/microbiology ; Hydrogen Sulfide/analysis ; Oxygen/analysis ; Perciformes/*physiology ; Population Dynamics ; Scyphozoa ; Seawater/chemistry
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Masthead (1925)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 40 (1925) 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1050400301
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    The formation of the sex glands and germ cells of mammals I. The origin of the germ cells in the albino rat (1925)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 40 (1925), S. 517-557 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: An early segregation of germ cells and migration through a germ track into the gonad does not occur in the albino rat. The germ cells are produced only from the peritoneum of the genital region and their earliest formation is coincident with the thickening of the coelomic epithelium to form the genital ridge. This takes place eleven days after insemination in embryos of approximately 18 somites. Germ cells continue to form from the peritoneum during the early development of the gonad. The peritoneum of this region also produces mesenchyme, smaller cells of the gonads, and the germinal epithelium.The argument for the specific character of the germ cells in vertebrates and their continuity from the egg is based largely upon assumption, and not upon substantial observations, and must be discarded. Germ-cell origin is a problem of cellular differentiatio, and not of early segregation.
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    Errata (1925)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 41 (1925), S. ii 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1050410102
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    The growth and chemical composition of three species of turtles fed on rations of pure foods (1925)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 41 (1925), S. 191-216 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Painted turtles, gopher tortoises, and terrapins were fed on various mixtures of sand, salts, dextrin, casein, cod-liver oil, wheat, eggs, lettuce, and meal worms. Each individual was weighted weekly for about a year and then killed for analysis, the water, ash, nitrogen, and fat being determined. Some individuals increased in weight as much as 75 per cent, others lost weight. Judged by growth and chemical analyses, the food requirements of chelonians, as representative poikilothermal vertebrates toward nutritive substances (including vitamines) are similar to those of homoiothermal animals.
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    Natural partial fertilization in fasciolaria (1925)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 41 (1925), S. 267-281 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Of the eggs laid by Fasciolaria about 1 per cent develop into veligers, about 2 per cent more undergo a few cleavage divisions, and about 97 per cent do not divide at all. The 99 per cent that fail to develop normally are ‘swallowed’ by the veligers. This study concerns itself chiefly with the ova that do not divide. Notes on normal development and on the ova that undergo atypical cleavage are included.All of the ova are found to be typical when passed from the ovary. To each ovum one to several sperms become attached at the vegetal pole in the region of a mass of undifferentiated protoplasm - the ‘polar mass.’ A fertilization cone forms in each ovum and a fertilization membrane. In typical development a yolk lobe is formed, the sperm enters in the usual way, and fertilization is completed as in many other mollusks. In 97 per cent of the ova the yolk lobe is not formed and the sperm does not enter. In these cases the wall of the egg nucleus remains intact a long time. The nucleus itself and the ‘polar mass’ sink into the egg and meet at the center. Then the nuclear wall disappears and an atypical diaster is formed. However, cleavage is not begun and the chromosomes form vesicles that remain near the center of the ovum until it is ‘swallowed’ and digested by the veliger.
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    Photoreceptors of Lumbricus terrestris, with special reference to their distribution, structure, and functionThis study was made at the zoölogical laboratory of The Johns Hopkins University and The Marine Biological Laboratory, Woods Hole, though chiefly at the former. (1925)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 41 (1925), S. 63-93 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: A special type of cell, called ‘Lichtzellen’ by Hesse, was found in the photosensitive regions of the earthworm. Wherever the epidermis is most sensitive to light these cells are most abundant. They are found in the epidermis of all segments of the body and also in nerve enlargements of the prostomium and the caudal segment, but the intersegmental and ventral regions of the different segments, except the more distal ones, contain none of them. They are supplied by nerves and each contains a characteristic inner structure, the optic organelle, composed of a large central hyaline structure, the lens, which is surrounded by a dense network of nerve fibrillae, the retinella. In hanging drops the lens was found to focus light in the region of the retinella irrespective of the direction of the rays.These cells are similar in structure and function to the visual cells in leeches. Available data indicate that these cells function as photoreceptors and that the fibrillae of the retinella are the direct receptors of light stimuli.Pigment is not associated with the photoreceptors in a way that suggests direct functional relationship, but there is a subepidermal pigment layer through which pinhole windows admit light along the path of nerves to each of the nerve enlargements containing photoreceptor cells. These windows open in such directions as to determine the direction of withdrawal of the worm.
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    Studies on the physiology of the liver VI. The effect of total removal of the liver in lower vertebratesContribution from the United States Fisheries Biological Station, Fairport, Iowa, and the Mayo Clinic. Read before Section F (Zoölogical Sciences) at the seventy-eighth meeting of the American Association for the Advancement of Science and the American Society of Zoölogists, Cincinnati, Ohio, December 27, 1923, to January 2, 1924. (1925)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 41 (1925), S. 183-189 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The effect of removal of the liver has been noted in fishes, frogs, and turtles. As in the higher vertebrates, removal of the liver produced a fall in blood sugar and a loss in muscular tone. The lower vertebrates failed to respond to intravenous injections of glucose, as do the birds and mammals. They also fail to respond to maltose or levulose. The liver maintained the blood-sugar level in the lower vertebrates, which is necessary for the maintenance of life.The mechanism of carbohydrate metabolism in the lower vertebrates may be different from that in the higher ones, in that glucose, when injected intravenously, apparently exercises a progressively less beneficial effect on the characteristic hypoglycemic condition which follows the removal of the liver of mammals and cold-blooded vertebrates.
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    Modification of development on the basis of differential susceptibility to radiation I. Fundulus heteroclitus and ultraviolet radiation (1925)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 41 (1925), S. 239-265 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: This paper reports experiments with Fundulus heteroclitus to modify larval development by means of ultraviolet radiation. Eggs were exposed to radiation at various intervals after fertilization for varying periods of time. The results accord with previous work on fish teratology, and the developmental types obtained are essentially similar to those produced by chemicals, cold, and hybridization. The deviations from normal development occur in the same body regions as do those in other vertebrates whose early development has been modified by the action of radiation (x-rays, radium, etc.).The results of these experiments indicate that there is a non-specificity in susceptibility relations with the production of similar types of monsters for widely different reagents. That these eggs are differentially susceptible to the action of ultraviolet radiation is indicated by the fact that those regions which have the highest metabolic activity when an inhibiting influence is active are the ones most generally affected. Thus modifications of the nervous system, sense organs, circulatory system, tail region, and body axis result, respectively, in the production of varying degrees of cyclopia, inadequate circulation, short, stubby or bent, non-motile tails (some bifid), and anterior twinning.As these modifications may be produced by applying inhibiting influences during the first few minutes after fertilization, it is evident that there is in the egg at this stage some constitutional or physiological basis which determines early differences in susceptibility of its various parts.
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    Karyosphere formation and synapsis in the beetle, phanaeusThe investigation here reported was carried on in the Zoölogical Laboratory, Columbia University. (1925)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 40 (1925), S. 261-297 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The parasynaptic union of chromosomes associated with the formation of a karyosphere is demonstrated in the spermatocytes of Phanaeus.The twelve V-shaped leptotene threads are polarized with their apices embedded in one plasmosome-like body, their distal ends in another (primary and secondary caps, respectively), and undergo a conjugation of the parasynaptic type. The distal ends of the chromosomes are freed from their attachment in the secondary cap. The six pachytene loops retain their polarized configuration.The basichromatin of the pachytene chromosomes appears ultimately to be withdrawn to form the karyosphere comprising six chromatic bodies within an oxychromatic «plasmosome,» the latter probably derived from the primary cap. The two caps are believed to arise from the chromosomes. The primary cap apparently becomes incorporated again in the chromosomes; the secondary cap, together with linin remnants of the pachytene chromosomes, disintegrates in the nucleus as residual chromatin.In the dissolution of the karyosphere six ring-shaped tetrads emerge arranged in a temporarily connected chain, giving under certain conditions, the misleading impression of twelve components arranged end to end. The entire content of the karyosphere appears to be employed in the formation of the chromosomes; no visible plasmosome remains.
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    The primordial germ cells of Hemidactylium and other amphibiaThe writer takes pleasure in acknowledging the helpful suggestions and criticisms of Profs. B. F. Kingsbury and S. H. Gage. To Professor Gage he is also indebted for the loan of a very complete series of Amblystoma embryos and larvae. Valuable assistance in the collection of other material was rendered by Profs. A. H. Wright and D. L. Gamble, of the Department of Zoölogy. Expenses incurred have been partially met from the Mrs. Dean Sage Research Fund. (1925)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 41 (1925), S. 1-43 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The primordial germ cells of urodeles and anurans can occupy comparable positions in the embryo only in very early stages of development, if at all. When first recognizable as reproductive elements, their situation in the two amphibian orders is quite strikingly different.The germ cells first become recognizable in urodeles in the medial edge of the lateral mesoderm; there is no evidence that their position previous to this time is other than mesodermal. In the anura they are entodermal in association during early development; they are finally separated from the dorsal portion of the roof of the archenteron to form a single axial germ-cell cord. No amphibian species studied showed a mode of origin different from that characteristic of its order.The so-called migration of the amphibian germ cells to their definitive situation is interpreted as the result of growth shiftings of related parts. Germ cells do not migrate independently through the tissues. Aberrant or ectopic cells for the most part result from failures or faulty correlations of growth processes. Certain aberrant cells of the caudal portion of the body in urodeles indicate the inclusion of sex elements in the ventral as well as in the lateral mesoderm.
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    Correlations of the musculature and the movements of the skull in natrix, with some suggestions of homology in the lacertiliansContributions from the Zoölogical Laboratory of the University of Illinois, no. 271. (1925)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 41 (1925), S. 159-181 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The musculature of the ophidian head is a fairly complex structure, due to the specialization of the skull and the peculiar movements and motions made possible by the high degree of streptostylism.This musculature has been derived from the lacertilian type by a splitting and a shifting of the original elemental muscle masses of this group. Most of the muscles are clearly homologous with those of the Lacertilia. Some cannot be homologized by a study of the mature forms.The greatest differences lie in the separation of the muscle masses in the ophidia, as compared with the undivided masses in the Lacertilia. Since the jaw movements of the Lacertilia are rather simple, there is no need for any subdivision or splitting of the jaw muscles, but with the complex movements of the ophidia this becomes necessary.A few of the ophidian muscles appear to be neomorphs, as no key to their origin could be determined by a comparison with lacertilians.
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    On the homology of the cranial muscles of the cypriniform fishes (1925)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 40 (1925), S. 1-109 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Much more information than is available at present must be obtained before the phylogeny of the muscular system in the Teleostei can be worked out satisfactorily. As a step toward the solution of this problem, the present study gives a detailed description of twenty cranial muscles in a number of species belonging to three groups of cypriniform fishes: the Cyprinoids, Cobitoids, and Siluroids.Particular attention is given to the morphological relations of the following muscles: adductor mandibulae, geniohyoideus, levator arcus branchialis, adductor arcus palatini, retractor branchialis dorsalis, interarcualis dorsalis and the trapezius.Comparison is made between corresponding muscles in different members of the three groups of fishes, and various homologies are pointed out between muscles in cypriniform and those in other fishes, especially Amia, Scomber, Perca and Esox.
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    A study of the gastric glands of alligator mississippiensis (1925)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 40 (1925), S. 169-189 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: A review of the literature of the gastric glands of reptiles shows marked differences of opinion concerning the nature and character of the cells composing the gastric glands.The present investigation of the gastric glands of the alligator has been carried out by histochemical and physiological experiments, rather than by the usual morphological methods, but the results can be stated both in terms of structure and function.1The surface epithelial cells and those lining the gland pits in the fundic, cardiac, and pyloric regions of the stomach of the alligator are not strictly comparable functionally to the mucous cells of mammals.2The cells composing the necks and bodies of the glands in the fundus, according to histochemical reactions, are parietal cells.3Certain cells lying beneath the columnar epithelial cells lining the lumen of the stomach and the foveolae react to one method of fixation and staining as do the chief cells of mammalian material.4The results of the experiment with the vital dye, neutral red, show that the cells of the gastric pits, the necks and bodies of the glands in the fundus of the alligator's stomach, react identically as those of the mammalian stomach.5The gastric juice of the alligator is acid to litmus-paper and contains a free mineral acid.
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    A histochemical study of intracellular digestion in triclad flatworms (1925)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 40 (1925), S. 299-340 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The course of digestion of an essentially protein food (beef liver) was followed by histological and histochemical methods in Planaria dorotocephala. After an average fasting period of two weeks, the planarians were fed and examined at close time intervals, ranging from one minute to eighty-seven days after feeding. Liver particles are engulfed by the phagocytic cells of the intestine into food vacuoles, where a series of digestive changes occur. The liver particles coalesce into a granular spherule which gradually condenses into a homogeneous and chromatophilic spherule. As the spherule transforms from a granular to a homogeneous condition, it exhibits a gradually increasing affinity for stains, an intensified protein reaction, and a gradual diminution in size. These spherules are protein, since they give positive xanthoproteic and Millon reactions.The homogeneous protein spherules gradually disappear, beginning at about twelve hours after feeding and continuing until the fifth day. During this period fat-droplets form, gradually increasing at the expense of the protein spherules. The protein spherules apparently dissolve into the cytoplasm, furnishing intermediate chemical compounds (tests indicate that a carbohydrate stage does not intervene) from which fat is synthesized. It thus appears that the fat is formed from the protein spherules. The fat thus formed is stored in the phagocytic cells, and remains unchanged in quantity for a fasting period lasting six weeks, after which it gradually diminishes. During the engulfment of the food, the fat decreases markedly, apparently furnishing energy for phagocytic activities. A few of the protein spherules may persist as «protein reserve».
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    Masthead (1925)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 40 (1925) 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1050400101
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    Conjugation of paramecium multimicronucleata, powers and mitchell (1925)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 40 (1925), S. 111-167 
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    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Microscopic examination of both living and stained forms indicates that the so-called ‘multivacuolate’ and ‘amicronucleate races of Paramecium caudatum’ belong to the species Paramecium multimicronucleata. The published accounts of the morphology and cultural characteristics of the various forms are compared and provide additional evidence. A more complete description is given, including distinctive characters previously omitted.The conjugation process of P. multimicronucleata in general resembles that of P. caudatum, most of the differences being due to the presence of four micronuclei instead of one. These each divide twice with characteristic figures, twelve of the sixteen daughter nuclei then degenerating. One of the remaining four splits to form a single pair of functional pronuclei in each cell. The two migratory pronuclei interchange as in P. caudatum. The synkaryon divides three times, and probably seven of these nuclei degenerate. The remaining one apparently undergoes two divisions. In most cases by six to eight hours after the conjugants separate two micronuclei of the four thus produced form enlarged macronuclear anlagen, the other two remaining as micronuclei. Each anlage divides within the next two or four hours, producing four macronuclear and four micronuclear analagen. Two fissions, each preceded by a division of the micronuclei, restore vegetative conditions.The process described above is compared with conjugation in P. bursaria, P. caudatum, and P. putrinum.
    Type of Medium: Electronic Resource
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    A mechanism for the coordination and regulation of ciliary movement as revealed by microdissection and cytological studies of ciliated cells of mollusksThe senior author desires to state that the actual work involved in the collection, preparation, and study of the material on which this paper is based has been done by Mr. Schmitt during his senior year at Washington University. The work carried credit toward the A.B. degree. The authors were associated during the investigation, in the relation of teacher and pupil. (1925)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 40 (1925), S. 479-515 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Systems of fiber-like structures traverse ciliated cells and epithelia in a way to suggest conduction paths for stimuli for coordinating and regulating ciliary movement, and results of microdissection support such an interpretation.Some fibers of the systems in epithelia of the gill terminate on the nuclear membrane, some between nuclei in the basal cytoplasm.The observed double refringency of the fibrillar apparatus places it in the category of irritable and contractile substance.Bipolar cells and nerve-like fibers lie immediately below and parallel with ciliated epithelia of the gill, but direct connections of these fibers with the intracellular system, although suspected, was not demonstrated.Ciliated epithelia of the gill are syncytial in character in the direction of the beat of cilia.Interciliary structures occur in the cuticular portion of ciliated epithelia which are interpreted to function in taking up strains in the gelled cytoplasm caused by the beat of cilia.Cilia occur in pairs in epithelia of the gill, and members of pairs are fused at their distal ends.Each cilium, as seen in dark-field illumination, pierces its basal body, and the fiber that is a continuation of the cilium divides immediately below the basal body into two; one diverging to the right, one to the left.Each cilium is composed of many delicate fibrillae.
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    Über die Chloride des zweiwertigen Molybdän, Wolframs und Tantals. IV Mitteilung. Die Derivate des 3- Wolfram-6-chlorides (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 140 (1925), S. 357-367 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19251400126
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    Quantitativer Nachweis kleiner Edelmetallmengen in Quecksilber (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 140 (1925), S. 368-370 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19251400127
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    Über die Natur des martensitischen Gefügebildes (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 140 (1925), S. 391-398 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Nach der Methode der Schliffglühung im Vakuum und neutralen Salzen und folgender Abschreckung wurde festgestellt, daß mit normaler Ätzung hervorgerufene Martensitstruktur immer nach dem ursprünglichen γ-Korn orientiert ist, daß immer in 1, 2 oder 3 Systemen auftretende Gleitlinien und Verwerfungserscheinungen auf dem nicht weiter behandelten Schliff auftreten, die in ihrer Orientierung ebenfalls durch das γ-Korn gegeben sind.
    Type of Medium: Electronic Resource
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    Über Pseudokomplexe (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 140 (1925), S. 371-378 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wird gezeigt: daß man bei den Kristallstrukturen zwischen echten und unechten oder Pseudokomplexen unterscheiden muß. Erstere besitzen Existenzfähigkeit für sich, charakteristische Eigenschaften und eine bestimmte hohe Eigensymmetrie, letztere dagegen besitzen jene nicht und nur niedere Symmetrie. Daß die Bildung der echten wie der Pseudokomplexe auf ein Koordinationsvermögen der Atome zurückzuführen ist. daß die Kristallgitter als Molekülverwachsungen angesehen werden können, welche auf Grund einer bestimmten - niederen - Eigensymmetrie des Moleküls und nach gewissen kristallographisch festlegbaren Gesetzen, analog den Zwillingsbildungen, erfolgen. Sie sind an das Zusammenfallen der Atomlagen mit den Symmetrieelementen geknüpft. daß solcherart die Kristallsymmetrie, insbesondere des NaCl, CsCl, der ihnen nahestehenden Alkalihalogenide des CaF2, des ZnS und des Kohlenstoffs erklärt wird. Das berechtigt andererseits zu der Hoffnung, daß man in gegebenen Fallen aus der sicher erkannten Kristallsymmetrie auf die des Moleküls wird schließen können.
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    Raumerfüllungszahlen bei flüssigen Gemischen (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 140 (1925), S. 399-404 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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    URL: http://dx.doi.org/10.1002/zaac.19251400132
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    Die Herstellung von reinen Zirkoniumsalzen aus Zirkoniumerzen mit Hilfe der Phosphate (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 144 (1925), S. 190-196 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19251440119
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    Der Auflösungsvorgang bei Mischkristallen von (Na, Ag)Cl und das Tammannsche n/8-Mol-Gesetz (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 143 (1925), S. 1-59 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Schmelzflüsse von AgCl + NaCl erstarrten nicht völlig homogen. Abschrecken des Schmelzflusses und langsames, unter stetem Rühren erfolgendes Erstarrenlassen führten zu Produkten verschiedenen Dispersitätsgrades. In dem einen Falle war das Schmelzgut trüb, verhältnismäßig grobdispers, im anderen Falle klar, feindispers. Durch längeres Tempern knapp unterhalb des Erstarrungspunktes ließ sich weitergehende Homogenisierung erzielen. Trübes Schmelzgut wurde dabei unter Durchschreitung opaleszierender Zwischenstufen durchsichtig und feindispers. Durch das Tempern wurde gleichzeitig Sammelkristallisation eingeleitet, die sich durch das Auftreten zahlreicher, wohlausgebildeter Flächen bekundete. Die beobachtete Doppelbrechung war, wie die von verschiedenen Forschern an Lösungsprodukten von (Na, Ag)Cl beobachtete, als Spannungsdoppelbrechung anzusehen.
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    Zur Kenntnis der Doppelacetate des Kupfers und der Alkalien (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 145 (1925), S. 141-150 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19251450110
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    Probleme der Borchemie (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 146 (1925), S. 230-238 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19251460117
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    Berichtigung zu einer Abhandlung über Aluminiumsulfid (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 146 (1925), S. 289-290 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19251460121
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    Über neue jodometrische Methoden, die auf der Bildung und Messung von Jodcyanid beruhen. III (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 142 (1925), S. 280-298 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19251420121
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    Über die chemischen Gleichgewichte zwischen Bleisulfid und seinen Röstprodukten. II (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 142 (1925), S. 143-179 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 12 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19251420114
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    Über die Struktur der Eisen-Nickelmeteoriten (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 142 (1925), S. 193-228 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 6 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19251420117
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    Über neue jodometrische Methoden, die auf der Bildung und Messung von Jodcyanid beruhen. II (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 142 (1925), S. 229-256 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19251420118
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    Fluorescenz und chemische Umwandlungen (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 142 (1925), S. 299-328 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Fluoreszierende Stoffe wie Eosin, Fluoresceïn, Methylenblau, Rhodamin usw. und nicht fluoreszierende Stoffe wie: Malachitgrün, Indigokarmin sind in Wirklichkeit instabile Verbindungen, die je nach den Umständen als oxydierende oder reduzierende Agenzien wirken können; gerade wie Ozon, H2O2, HNO2, SO2, Hydroxylamin sich unter verschiedenen Bedingungen als Oxydations- und Reduktionsmittel erweisen können.
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    Über ein hochmolekulares Zwischenprodukt der Zersetzung von [Pt en2]J2 durch Säuren (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 142 (1925), S. 367-372 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Durch Zusatz von verdünnten Säuren zu Lösungen von [Pt en2]J2 wird zunächst die Bildung eines schwerlöslichen Hydratationsproduktes desselben von der Zusammensetzung: [Pt2 en4J · 12 H2O]J · 5 H2O veranlaßt. Gleichzeitig ausgeschiedenes Jod führt dann erst zur Zersetzung zu PtJ2 und zur Bildung von Äthylendiaminsulfat. Starke Säuren bewirken dieses sofort.
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    Berichtigung zu meiner Arbeit: Über die Konstitution der Borsäuren und einiger ihrer Derivate (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 142 (1925), S. 399-400 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19251420130
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    Röntgenographische Untersuchung einiger Mischkristalle der Systeme (Na, Ag)Cl und K(Cl, Br) (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 143 (1925), S. 60-75 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Die Möglichkeit, mit Hilfe der Röntgenanalyse disperse Gebilde von homogenen zu unterscheiden, wird diskutiert.
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    Beitrag zur Kenntnis der fraktionierten Kristallisation radioaktiver Stoffe, samt dem Versuche einer Theorie dieses Vorganges. I. Mitteilung (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 143 (1925), S. 97-117 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 7 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19251430107
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    Der Einfluß der Wasserstoffionen auf den Mechanismus der Ferrisalzreduktion durch Natriumthiosulfat (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 144 (1925), S. 321-336 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wurde untersucht, auf welche Weise der Reaktionsmechanismus der Ferrisalzreduktion durch Natriumthiosulfat von der Acidität der Lösung abhängt. Ein Säurezusatz wirkt auf den genannten Prozeß folgendermaßen ein: 1wird im Sinne einer Neutralsalzwirkung die Reaktion verzögert;2wird das Gleichgewicht (1) bei überschüssigen Wasserstoffionenkonzentrationen von rechts nach links verschoben und dadurch die Bildung und Stabilität des Ferrithiosulfatkomplexes, welcher in schwach saurer Lösung als Teilnehmer an der gemessenen Reaktion anzusehen ist, verzögert bzw. verhindert;3macht sich bei geringeren Wasserstoffionenkonzentrationen eine Erhöhung der reaktionsfähigen Ferriionen durch Zurückdrängen der Hydrolyse des Ferrisalzes bemerkbar;4tritt bei höheren Aciditäten eine Nebenreaktion in den Vordergrund, von welcher wahrscheinlich gemacht werden konnte, daß sie vierter Ordnung nach der Bruttogleichung verläuft und bei mehr als 0,5-norm. saurer Lösung den Gesamtprozeß vorwiegend beherrscht;5konnte durch Vergleich der Salzsäure- mit der Neutralsalzwirkung nachgewiesen werden, daß bei Aciditäten übe 0,05 Molen/1 Liter eine Beschleunigung der Reaktion durch Wasserstoffionen erfolgt, welche vorwiegend auf Zurückdrängung der Hydrolyse des Ferrisalzes zurückzuführen ist;6wurde bei langsamem Reaktionsverlauf und hoher Azidität Reaktion (6) als Störungsursache aufgefunden, welche einen sinkenden Gang der Geschwindigkeitskoeffizienten vierter Ordnung im Laufe eines Versuches bedingt.
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    Masthead (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 145 (1925) 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19251450101
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    Über die Zersetzungsgeschwindigkeit einiger Ester in ihrer Abhängigkeit von der Wasserstoffionenkonzentration (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 145 (1925), S. 1-57 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Es wurde die Verseifungsgeschwindigkeit des Methylacetats in Wasserlösung und in Gegenwart von verschiedenen Neutralsalzen in ihrer Abhängigkeit von der elektrometrisch gemessenen Wasserstoffionenkonzentration experimentell festgestellt. Die gleiche Untersuchung wurde auch an den Estern Äthylacetat und Monoacetin in Wasserlösung durchgeführt.
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    Zur Kenntnis der Reaktionen in festem Zustande. V. (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 145 (1925), S. 117-121 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19251450107
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    Zur Trennung des Ga von Al und Fe (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 144 (1925), S. 267-268 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19251440126
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    Radiotechnik im Dienste der Metallkunde (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 144 (1925), S. 263-266 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19251440125
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    Untersuchungen über die Löslichkeit des Magnesiumhydroxyds. II. Die Löslichkeitsprodukte und die Dissoziationskonstante der Magnesiumhydroxyde (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 144 (1925), S. 269-288 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Löslichkeitsprodukte der Magnesiumhydroxyde wurden auf Grund von Versuchen berechnet, die eine elektrometrische Bestimmung der Hydroxylionenaktivität in mit Magnesiumhydroxyd gesättigten Magnesiumchloridlösungen umfassen und ergaben sich bei 18° für stabiles und labiles Magnesiumhydroxyd als 10-10,95 bzw. 10-9,2.
    Additional Material: 8 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19251440127
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    Analyse des Alvits (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 144 (1925), S. 304-306 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19251440129
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    Negative Katalyse bei Oxydationsreaktionen (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 144 (1925), S. 289-303 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Bei der Oxydation von Phosphor, Chloroform, Sulfiten, Stannosalzen, Benzaldehyd, Akrolein und verschiedenen anderen Reduktionsmitteln durch Luftsauerstoff wirken leicht oxydierbare Stoffe, wie Hydrochinon, Zuckerarten, Glycerin, Natriumarsenit und verschiedene organische Stoffe als negative Katalysatoren. In ähnlicher Weise verhalten sich bei vielen Oxydationsreaktionen Reduktionsmittel als Verzögerer. Diese Ergebnisse wurden von mir in einer 1921 veröffentlichten Mitteilung zueinander in Beziehung gebracht; in dieser Arbeit war angegeben, daß die Erscheinung der negativen Katalyse bei Oxydationsreaktionen möglich ist, wenn der Katalysator leicht oxydiert werden kann.
    Type of Medium: Electronic Resource
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    Induzierte Oxydation und ihr Mechanismus, auf Grundlage der Bildung von Ionen bei chemischen Umwandlungen (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 144 (1925), S. 307-312 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Stoffe wie Schwefel, Rohrzucker, Traubenzucker, Äthylalkohol, Stärke, Kaliumoxalat, Natriumtartrat, Natriumarsenit usw. sind oxydiert worden durch Einleiten von Luft bei gewöhnlicher Temperatur in Lösungen dieser Stoffe, die versetzt waren mit feinverteiltem Kupfer, oder Cuprochlorid, oder Cuprooxyd, oder Zink, oder gelbem Phosphor.
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    Kolorimetrische Molybdänbestimmung (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 144 (1925), S. 319-320 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19251440132
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    Über Bildung und Zersetzung von Polythionaten (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 144 (1925), S. 337-340 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19251440134
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    Ableitung der Grundgleichungen zum Massenwirkungsgesetz für kondensierte und heterogene Systeme (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 145 (1925), S. 239-250 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19251450115
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    Über die Zersetzung von Schwefelchlorür mit Wasser (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 146 (1925), S. 239-262 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 6 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19251460118
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    Potentiometrische Titration des Wismuts bei Gegenwart anderer Metalle (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 146 (1925), S. 291-298 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19251460122
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    Beiträge zur mikrochemischen Bestimmung des Schwefels I. Die Bestimmung des Schwefels in leicht löslichen Sulfiden (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 146 (1925), S. 324-328 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: In Einwagen von 1 - 10 mg Substanz ist durch Titration mit n/20-Jod- und Thiosulfatlösung der Schwefel in leicht löslichen Sulfiden mit einer der makrochemischen Analyse gleichen Genauigkeit bestimmbar.
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    Die Auflösungsgeschwindigkeit und die Ätzfiguren von Kristallen (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 146 (1925), S. 413-419 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 3 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19251460130
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    Chlorimidodisulfosaures Kalium (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 147 (1925), S. 1-4 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19251470103
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    Über gefärbte Verbindungen zwischen dem Sulfid und Mercaptid des Quecksilbers (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 146 (1925), S. 196-199 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19251460113
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    Die Gleichgewichtsdrucke von Gashydraten (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 146 (1925), S. 179-195 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 7 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19251460112
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    Über die Gewichtsanalytische Bestimmung des Zinks mittels Cyanamid (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 147 (1925), S. 42-49 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 5 Tab.
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    URL: http://dx.doi.org/10.1002/zaac.19251470107
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    Über freiwillige Strukturbildung in Solen. (Eine neue Art anisotrop flüssiger Medien.) (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 147 (1925), S. 91-110 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Es wurde das Entstehen von Solen mit gebieteweiser Parallelordnung der länglichen Kolloidteilchen beim Abkühlen heißer konzentrierter Lösungen von Benzopurpurin 4B und Chrysophenin beobachtet.
    Additional Material: 16 Ill.
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    Beiträge zur Chemie des zweiwertigen Chroms (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 147 (1925), S. 50-67 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 6 Tab.
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    URL: http://dx.doi.org/10.1002/zaac.19251470108
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    Zur Kinetik der Oxydo-Reduktionsteilung bei Formaldehyd (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 147 (1925), S. 123-134 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19251470113
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    Beiträge zur systematischen Verwandtschaftslehre XXXIII. Über Die Ammoniakate der Berylliumhalogenide (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 148 (1925), S. 157-169 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 5 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19251480119
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    Über Kolloides Wismut (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 146 (1925), S. 166-178 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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    Die Valenzverhältnisse des Bors, Kohlenstoffs und Stickstoffs vom Standpunkte des Bohr'schen Atommodells (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 146 (1925), S. 201-224 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: In der vorhergehenden Diskussion der Valenzverhältnisse der Elemente Bor, Kohlenstoff und Stickstoff ist gezeigt worden, daß man die verschiedenen Valenzstufen durch Atommodelle darstellen kann, die sich voneinander durch eine verschiedene Besetzung mit Elektronen der außerhalb der äußersten geschlossenen Edelgasschale gelegenen Quantenbahnen unterscheiden. Zwischen diesen verschiedenen Elektronenanordnungen finden Übergänge statt, und manche derselben befinden sich in einem dynamischen Gleichgewichte miteinander, wodurch der Übergang von einer Valenzstufe zur anderen und die beobachteten Gleichgewichte zwischen Verbindungen verschiedener Valenzstufen ihre Erklärung finden.
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    Standardisierung von Titantrichloridlösungen und potentiometrische Titration des Kupfers (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 146 (1925), S. 281-288 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19251460120
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    Über die Ursachen der Farbenänderung der Kobaltchloridlösungen (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 146 (1925), S. 305-314 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19251460124
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    Studien über die fraktionierte Fällung. I. Ihre Abhängigkeit von Löslichkeitsprodukten, Dissoziationskonstanten, Zustandsformen der Bodenkörper u. a. (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 146 (1925), S. 388-410 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wurden, vor allem in Anbetracht des technischen Interesses, die Möglichkeiten untersucht, Metalle aus gemeinschaftlichen Lösungen ihrer Salze durch fraktionierte Fällung mit (OH)′, (CO3)″ und (S)″ zu trennen.
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    Über die Titration von Quecksilber mit Cyankalium, Blei mit Arseniat und Eisen mit Thiosulfat in Erwiderung auf eine Abhandlung von E. Rupp mit W. Wegner und P. Maihs (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 149 (1925), S. 359-376 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19251490126
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    Die elektrische Leitfähigkeit einiger AgZn-Legierungen in abgeschrecktem Zustande (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 149 (1925), S. 395-400 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19251490130
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    Über Entschwefelung von Schwermetallsulfiden durch Bariumoxyd (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 150 (1925), S. 1-9 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Wie Erfahrungen von Hedvall und Tammann an anderen Reaktionen erwarten ließen, wurde im Einklange mit den thermochemischen Bedingungen chalkographisch, analytisch und thermisch festgestellt, daß sich die Sulfide des Kupfers und Bleiglanz durch festes Bariumoxyd unter Ausschluß von Luft und bei Abwesenheit von Kohle mehr oder weniger vollständig zu Metall reduzieren ließen. Der Reaktionsbeginn lag zwischen etwa 200 und 400°, also weit unterhalb der Schmelzpunkte der Reagenzien. Ein Ersatz des Bariumoxyds durch Calciumoxyd war nicht möglich.
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    Eine Methode zur Bestimmung der Polythionsäuren nebeneinander (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 142 (1925), S. 119-129 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 4 Tab.
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    Über die Bestimmung des Schwefels in Polysulfiden (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 142 (1925), S. 115-118 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19251420109
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    Löslichkeit einiger anorganischer Salze in organischen Lösungsmitteln (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 142 (1925), S. 130-132 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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    Zur Geometrie der Koordinationszahl. I (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 142 (1925), S. 133-134 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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    Über das Optisch aktive Boratom (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 142 (1925), S. 373-382 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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    URL: http://dx.doi.org/10.1002/zaac.19251420128
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    Zur Frage der richtigen Ausführung und Deutung der „quantitativen Spektralanalyse“ (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 142 (1925), S. 383-398 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19251420129
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    Masthead (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 143 (1925) 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19251430101
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    Zur Kenntnis der Löslichkeit von Ampholyten (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 145 (1925), S. 58-62 
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    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19251450103
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    Electronic Resource
    Über die Molvolume von Salzen beim Schmelzpunkte (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 145 (1925), S. 88-94 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19251450105
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