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  • Inorganic Chemistry  (3,764)
  • GEOPHYSICS  (2,227)
  • Fisheries
  • 2020-2024  (9)
  • 1975-1979  (5,992)
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  • 1
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    Frontiers Media SA
    Publication Date: 2024-04-04
    Description: The Frontiers in Chemistry Editorial Office team are delighted to present the inaugural “Frontiers in Chemistry: Rising Stars” article collection, showcasing the high-quality work of internationally recognized researchers in the early stages of their independent careers. All Rising Star researchers featured within this collection were individually nominated by the Journal’s Chief Editors in recognition of their potential to influence the future directions in their respective fields. The work presented here highlights the diversity of research performed across the entire breadth of the chemical sciences, and presents advances in theory, experiment and methodology with applications to compelling problems. This Editorial features the corresponding author(s) of each paper published within this important collection, ordered by section alphabetically, highlighting them as the great researchers of the future. The Frontiers in Chemistry Editorial Office team would like to thank each researcher who contributed their work to this collection. We would also like to personally thank our Chief Editors for their exemplary leadership of this article collection; their strong support and passion for this important, community-driven collection has ensured its success and global impact.
    Keywords: Green and Sustainable Chemistry ; Analytical Chemistry ; Theoretical and Computational Chemistry ; Polymer Chemistry ; Medicinal and Pharmaceutical Chemistry ; Organic Chemistry ; Nanoscience ; Catalysis and Photocatalysis ; Supramolecular Chemistry ; Electrochemistry ; Inorganic Chemistry ; Chemical Biology ; thema EDItEUR::P Mathematics and Science::PD Science: general issues
    Language: English
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  • 2
    Publication Date: 2024-04-04
    Description: This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact
    Keywords: living marine resources ; Forecasting ; prediction ; fish ; Fisheries ; Seasonal to Decadal Prediction ; Climate services ; thema EDItEUR::P Mathematics and Science::PD Science: general issues ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RB Earth sciences::RBK Hydrology and the hydrosphere::RBKC Oceanography (seas and oceans)
    Language: English
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  • 3
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    Springer Nature | Palgrave Macmillan
    Publication Date: 2024-03-29
    Description: This open access book explores fishing livelihoods in the context of the wider contexts in which they are embedded. Drawing on case studies from across the Asia-Pacific region, the book highlights how fishing livelihoods are shaped by globalisation, social relationships and governance. The book concludes by showing how better understanding these relationships can contribute to governance for healthier ecosystems and social wellbeing. This is an open access book. This is an open access book.
    Keywords: Fisheries ; marine social science ; fishing livelihoods in the Asia-Pacific ; sustainable fishing ; environmental sustainability ; food security ; coastal conservation ; fish stocks ; fisheries governance ; Fishing livelihoods and social diversity ; Fishing livelihoods and wellbeing ; Open Access ; thema EDItEUR::J Society and Social Sciences::JP Politics and government::JPQ Central / national / federal government::JPQB Central / national / federal government policies ; thema EDItEUR::J Society and Social Sciences::JH Sociology and anthropology::JHB Sociology ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RN The environment ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RG Geography::RGB Physical geography and topography ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RN The environment::RNF Environmental management ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RG Geography::RGC Human geography
    Language: English
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Environmental management 3 (1979), S. 133-144 
    ISSN: 1432-1009
    Keywords: Coastal zone Management ; Fisheries ; Marshes ; Wetlands ; Louisiana
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract This paper examines causes and consequences of wetland losses in coastal Louisiana. Land loss is a cumulative impact, the result of many impacts both natural and artificial. Natural losses are caused by subsidence, decay of abandoned river deltas, waves, and storms. Artificial losses result from flood-control practices, impoundments, and dredging and subsequent erosion of artificial channels. Wetland loss also results from spoil disposal upon wetlands and land reclamation projects. Total land loss in Louisiana's coastal zone is at least 4,300 ha/year. Some wetlands are converted to spoil banks and other eco-systems so that wetland losses are probably two to three times higher. Annual wetland losses in the Barataria Bay basin are 2.6% of the wetland area. Human activities are the principal determinants of land loss. The present total wetland area directly lost because of canals may be close to 10% if spoil area is included. The interrelationship between hydrology, land, vegetation, substrate, subsidence, and sediment supply are complicated; however, hydrologic units with high canal density are generally associated with higher rates of land loss and the rate may be accelerating. Some cumulative impacts of land loss are increased saltwater intrusion, loss of capacity to buffer the impact of storms, and large additions of nutrients. One measure of the impact is that roughly $8–17 × 106 (U.S.A.) of fisheries products and services are lost annually in Louisiana. Viewed at the level of the hydrologic unit, land loss transcends differences in local vegetation, substrate, geology, and hydrology. Land management should therefore focus at that level of organization. Proper guideline recommendations require an appreciation of the long-term interrelations of the wetland estuarine system.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Environmental biology of fishes 2 (1977), S. 241-259 
    ISSN: 1573-5133
    Keywords: Production ; Fisheries ; Population dynamics ; Energetics ; Fishes ; Competition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Synopsis Production rates of seven species of fishes were determined for one year in a 0.95 ha pond. Total annual production of all fishes in the pond was 209 g m−2y−1 (after the subtraction of 16.2 g m−2y−1 of negative production). Over 90% of the production occurred in the months of June through September, with young-of-the-year fishes contributing 84% of the total. When Y of Y fishes shifted to benthic diets in the spring, the small biomass of benthos available could not sustain the large biomas of fish. Severe competition for the available food then resulted in decreased production rates for the entire fish taxocene.
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 108 (1975) 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 108 (1975), S. 445-463 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Chemistry of NariciclasineFrom narciclasine (2a), the acetonide 8a and its oxidation product 10 are prepared. 10 isomerizes easily to give 11. Catalytic hydrogenation of 2a yields a mixture of dihydronarci-clasines from which the pure cis- and trans-isomers 14a and 15a can be obtained via the tetraacetates. As a by-product of the hydrogenation, isonarciclasine (16a) is isolated. The relative configuration of narciclasine (as represented by formula 2a) is established by the n. m. r. spectra of 15b and 16b. Lycoricidine and margetine are shown to be identical; their configuration is as shown in formula 2b. Some biological tests are reported.
    Notes: Aus Narciclasin (2a) wird das Acetonid 8a und dessen Oxidationsprodukt 10 dargestellt. 10 wird leicht zu 11 isomerisiert. Das bei der katalytischen Hydrierung von 2a anfallende Gemisch der Dihydronarciclasine wird über die Tetraacetate in die cis- und trans-Verbindungen 14a und 15a aufgetrennt. Als Nebenprodukt der katalytischen Hydrierung entsteht Isonarciclasin (16a). Mit Hilfe der NMR-Spektren von 15b und 16b läßt sich die relative Konfiguration des Narciclasins entsprechend 2a beweisen. Lycoricidin und Margetin sind identisch und haben die Konfiguration 2b. Über einige biologische Teste wird berichtet.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 108 (1975), S. 486-499 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Complex Chemistry of Reactive Organic Compounds, V. Reaction of Aliphatic Diazo Compound with Thermolabile Manganese ComplexesAliphatic diazo compounds react with the manganese- tetrahydrofurane complexes 1 and 2, respectively, to yield olefine, ketimine or carbene complexes: 3-diazo-2- butanone (3b) reacts with 2 under intramolecular hydride transfer to give the buten-2- one complex 7, while 3-diazocamphor (3c) leads to the 3-iminocamphor complex 8. Benzolyphenyldiazomethane (3a), diphenyldiazomethane (9a), and its p-substituted derivatives 9b-f are shown to be preliminary stages for the stable carbene complexes 4, 10, and 11, the spectra of which are discussed. The diphenylcarbene ligand can be split off by triphenylphosphine, carbon monoxide, ammonium cerium(IV) nitrate, and by thermolysis.
    Notes: Aliphatische Diazoverbindungen reagieren mit den Mangan-THF- Komplexen 1 bzw. 2 zu Olefin-, Ketimin- oder Carben-Komplexen: Während 3-Diazo-2-butanon (3b) mit 2 unter intramolekularer Hydridverschiebung den Buten-2- on-Komplex 7 ergibt, bildet 3-Diazo-campher (3c) bei Umsetzung mit 2 den 3-Iminocampher-Komplex 8. Benzoylphenyldiazomethan (3a) sowie Diphenyldiazomethan (9a) und seine p- substituierten Derivate 9b-f verhalten sich gegenüber 1 und 2 als Vorstufen für die stabilen Carben-Komplexe 4, 10 und 11, deren Spektren diskutiert werden. Der Diphenylcarben-Ligand in 11a kann mit Triphenylphosphin, Kohlenmonoxid und Ammoniumcer(IV)-nitrat sowie durch Thermolyse abgespalten werden.
    Additional Material: 7 Tab.
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 108 (1975), S. 528-537 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Photochemical Dimerisation dof 1,4-DialkynylbenzenesOn irradiation with ultraviolet light 1,4-diethynylbenzene (4a) forms blue unstable 6-ethynyl-1-(4- ethynylphenyl)azulene (5) and 6-ethynyl-2-(4-ethynylphenyl)azulene (6) besides polymers. The photolysis of 1,4-bis(phenylethynyl)benzene (4b) yields stable green 2,3-diphenyl-6-phenylethynyl-1-[4- (phenylethynyl)phenyl]azulene (9) and the isomeric naphthalene 11. Products of catalytic reduction of 5, 9, and 11 are described.
    Notes: Aus 1,4-Diäthinylbenzol (4a) entstehen bei Bestrahlung mit ultraviolettem Licht das wenig beständige, blaue 6-Äthinyl-1-(4-äthinylphenyl)azulen (5) und 6-Äthinyl-2-(4-äthinylphenyl)-azulen (6) neben polymeren Produkten. Dagegen führt die Photolyse von 1,4-Bis(phenyl-äthinyl)benzol (4b) zu dem beständigen grünen 2,3-Diphenyl-6-phenyläthinyl-1-[4-(phenyl-äthinyl)phenyl]azulen (9) und dem isomeren Naphthalin-Derivat 11. Reduktionsprodukte von 5, 9 und 11 werden beschrieben.
    Additional Material: 2 Ill.
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 108 (1975), S. 561-568 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Derivatives of Methylendioxybenzene, 40. the Synthesis of Ferrugone and PseudoferrugoneThe isoflavones ferrugone (1a) and pseudoferrugone (1a) as well as their dihydro derivatives 2a and b are prepared from the apione derivatives 5f of 6f and the chromene or chroman derivatives 4d and 3p.
    Notes: Die Isoflavone Ferrugon (1a) und Pseudoferrugon (1b) sowie die Dihydroverbindungen 2a und b werden durch Reaktion der Apionderivate5f und 6f mit den Chromen- bzw. Chroman-derivaten 4d bzw. 36p dargestellt.
    Type of Medium: Electronic Resource
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