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  • 1
    Publication Date: 2014-06-21
    Description: Seventeen Middle Pleistocene crania from the Sima de los Huesos site (Atapuerca, Spain) are analyzed, including seven new specimens. This sample makes it possible to thoroughly characterize a Middle Pleistocene hominin paleodeme and to address hypotheses about the origin and evolution of the Neandertals. Using a variety of techniques, the hominin-bearing layer could be reassigned to a period around 430,000 years ago. The sample shows a consistent morphological pattern with derived Neandertal features present in the face and anterior vault, many of which are related to the masticatory apparatus. This suggests that facial modification was the first step in the evolution of the Neandertal lineage, pointing to a mosaic pattern of evolution, with different anatomical and functional modules evolving at different rates.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Arsuaga, J L -- Martinez, I -- Arnold, L J -- Aranburu, A -- Gracia-Tellez, A -- Sharp, W D -- Quam, R M -- Falgueres, C -- Pantoja-Perez, A -- Bischoff, J -- Poza-Rey, E -- Pares, J M -- Carretero, J M -- Demuro, M -- Lorenzo, C -- Sala, N -- Martinon-Torres, M -- Garcia, N -- Alcazar de Velasco, A -- Cuenca-Bescos, G -- Gomez-Olivencia, A -- Moreno, D -- Pablos, A -- Shen, C-C -- Rodriguez, L -- Ortega, A I -- Garcia, R -- Bonmati, A -- Bermudez de Castro, J M -- Carbonell, E -- New York, N.Y. -- Science. 2014 Jun 20;344(6190):1358-63. doi: 10.1126/science.1253958.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centro Mixto UCM-ISCIII de Evolucion y Comportamiento Humanos, Madrid, Spain. Departamento de Paleontologia, Facultad Ciencias Geologicas, Universidad Complutense de Madrid, Spain. jlarsuaga@isciii.es. ; Area de Paleontologia, Departamento de Geologia, Geografia y Medio Ambiente, Universidad de Alcala, Spain.Centro Mixto UCM-ISCIII de Evolucion y Comportamiento Humanos, Madrid, Spain. ; Centro Nacional de Investigacion sobre la Evolucion Humana Burgos, Spain. School of Earth and Environmental Sciences, the Environment Institute, and the Institute for Photonics and Advanced Sensing (IPAS), University of Adelaide, Australia. ; Departamento Mineralogia y Petrologia, Facultad de Ciencia y Tecnologia, Universidad del Pais Vasco, Spain. ; Berkeley Geochronology Center, Berkeley, CA, USA. ; Department of Anthropology, Binghamton University (State University of New York), Binghamton, NY, USA. Division of Anthropology, American Museum of Natural History, New York, NY, USA.Centro Mixto UCM-ISCIII de Evolucion y Comportamiento Humanos, Madrid, Spain. ; Departement de Prehistoire, Museum National d'Histoire Naturelle, Paris, France. ; Centro Mixto UCM-ISCIII de Evolucion y Comportamiento Humanos, Madrid, Spain. Departamento de Paleontologia, Facultad Ciencias Geologicas, Universidad Complutense de Madrid, Spain. ; U.S. Geological Survey, Menlo Park, CA,USA. ; Centro Nacional de Investigacion sobre la Evolucion Humana Burgos, Spain. ; Laboratorio de Evolucion Humana, Departamento de Ciencias Historicas y Geografia, Universidad de Burgos, Spain. ; Centro Nacional de Investigacion sobre la Evolucion Humana Burgos, Spain. Institute for Photonics and Advanced Sensing (IPAS), School of Chemistry and Physics, University of Adelaide, Australia. ; Area de Prehistoria, Departamento d'Historia i Historia de l'Art, Universitat Rovira i Virgili (URV), Tarragona, Spain. Institut Catala de Paleoecologia Humana i Evolucio Social, Tarragona, Spain.Centro Mixto UCM-ISCIII de Evolucion y Comportamiento Humanos, Madrid, Spain. ; Centro Mixto UCM-ISCIII de Evolucion y Comportamiento Humanos, Madrid, Spain. ; Paleontologia, Aragosaurus-IUCA and Facultad Ciencias, Universidad de Zaragoza, Spain. ; Centro Mixto UCM-ISCIII de Evolucion y Comportamiento Humanos, Madrid, Spain. Departement de Prehistoire, Museum National d'Histoire Naturelle, Paris, France. PAVE Research Group, Division of Biological Anthropology, Cambridge, UK. ; Departement de Prehistoire, Museum National d'Histoire Naturelle, Paris, France. Laboratorio de Evolucion Humana, Departamento de Ciencias Historicas y Geografia, Universidad de Burgos, Spain. ; Centro Mixto UCM-ISCIII de Evolucion y Comportamiento Humanos, Madrid, Spain. Centro Nacional de Investigacion sobre la Evolucion Humana Burgos, Spain. Laboratorio de Evolucion Humana, Departamento de Ciencias Historicas y Geografia, Universidad de Burgos, Spain. ; High-Precision Mass Spectrometry and Environment Change Laboratory (HISPEC), Department of Geosciences, National Taiwan University, Taiwan ROC. ; Institut Catala de Paleoecologia Humana i Evolucio Social, Tarragona, Spain. Area de Prehistoria, Departamento d'Historia i Historia de l'Art, Universitat Rovira i Virgili (URV), Tarragona, Spain. Institute of Vertebrate Paleontology and Paleoanthropology of Beijing (IVPP), China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24948730" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/anatomy & histology ; Extinction, Biological ; *Fossils ; Genetic Drift ; Humans ; Neanderthals/*anatomy & histology/*genetics ; Organ Size ; Reproductive Isolation ; Skull/*anatomy & histology ; Spain
    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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  • 2
    Publication Date: 1997-08-22
    Description: It has been suggested that European Middle Pleistocene humans, Neandertals, and prehistoric modern humans had a greater sexual dimorphism than modern humans. Analysis of body size variation and cranial capacity variation in the large sample from the Sima de los Huesos site in Spain showed instead that the sexual dimorphism is comparable in Middle Pleistocene and modern populations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Arsuaga, J L -- Carretero, J M -- Lorenzo, C -- Gracia, A -- Martinez, I -- Bermudez de Castro, J M -- Carbonell, E -- New York, N.Y. -- Science. 1997 Aug 22;277(5329):1086-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Departamento de Paleontologia, Instituto de Geologia Economica, Facultad de Ciencias Geologicas, Universidad Complutense de Madrid, Ciudad Universitaria 28040 Madrid, Spain.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9262474" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Body Constitution ; Female ; *Fossils ; Hominidae/*anatomy & histology ; Humans ; Male ; *Sex Characteristics ; Skull/*anatomy & histology ; Spain
    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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  • 3
    Publication Date: 1993-09-24
    Description: Rheumatoid arthritis is an inflammatory synovial disease thought to involve T cells reacting to an antigen within the joint. Type II collagen is the major protein in articular cartilage and is a potential autoantigen in this disease. Oral tolerization to autoantigens suppresses animal models of T cell-mediated autoimmune disease, including two models of rheumatoid arthritis. In this randomized, double-blind trial involving 60 patients with severe, active rheumatoid arthritis, a decrease in the number of swollen joints and tender joints occurred in subjects fed chicken type II collagen for 3 months but not in those that received a placebo. Four patients in the collagen group had complete remission of the disease. No side effects were evident. These data demonstrate clinical efficacy of an oral tolerization approach for rheumatoid arthritis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Trentham, D E -- Dynesius-Trentham, R A -- Orav, E J -- Combitchi, D -- Lorenzo, C -- Sewell, K L -- Hafler, D A -- Weiner, H L -- AG00294/AG/NIA NIH HHS/ -- MO1 RR01032/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1993 Sep 24;261(5129):1727-30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, Beth Israel Hospital, Boston, MA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8378772" target="_blank"〉PubMed〈/a〉
    Keywords: Administration, Oral ; Adult ; Aged ; Arthritis, Rheumatoid/*drug therapy/immunology ; Autoimmune Diseases/*drug therapy/immunology ; Collagen/*administration & dosage/adverse effects/therapeutic use ; Double-Blind Method ; Female ; Humans ; Immune Tolerance ; Male ; Middle Aged ; Placebo Effect ; T-Lymphocytes/immunology
    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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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 89 (1993), S. 0 
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Oxygen shortage in soils can occur following a wide range of natural circumstances, affecting the plant's physiology. In this paper the performance of nodulated lucerne plants under severe hypoxia is examined and the mechanisms involved to achieve this adaptation are discussed. Nodulated lucerne plants (Medicago sativa L.) were grown with their rooting medium exposed to 1 or 21 kPa oxygen. Final yield, as expressed on a shoot dry weight basis, was unaffected but root and nodule dry weights were reduced by 50%. Water content in roots and nodules was higher at 1 kPa as a result of the formation of aerenchyma. Specific acetylene reduction activity was higher in hypoxic nodules as a consequence of modified nodule structure, although they were more sensitive to the presence of acetylene or nitrate. Root respiration was insensitive to changes in external oxygen supply, therefore providing adequate support for mineral uptake. Nodule respiration rates were 5 times higher in control plants when measured as CO2 evolution, whereas no differences were observed in O2 uptake. It is suggested that adaptation of nodulated lucerne to low oxygen concentrations involves changes in photosynthate allocation and nodule morphology, which provide a more efficient nitrogen fixation.
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  • 5
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Mutation Research/Fundamental and Molecular Mechanisms of Mutagenesis 232 (1990), S. 99-104 
    ISSN: 0027-5107
    Keywords: DNA-repair mutants ; Tn10 excision ; Tn10 transposition
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 447-448 (Feb. 2004), p. 353-358 
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 264-268 (May 2004), p. 797-800 
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Journal of sol gel science and technology 5 (1995), S. 167-172 
    ISSN: 1573-4846
    Keywords: silica aerogels ; Raman spectroscopy ; structural defects ; 29Si NMR
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The structure of the silica aerogels was studied by Raman spectroscopy. The spectra of the solid network resembles that of bulk silica with additional bands related to organic groups and a large amount of OH groups. The typical bands due to ring breathing also called defect bands D 1 and D 2 located at 490 and 610 cm−1 are present. However, the evolution of the D 2 band compared to that of OH band (980 cm−1) seems apparently, in contradiction with the results previously reported in the literature. During heat treatments between 25 and 300°C the D 2 and the OH bands increase simultaneously. Generally, in silica glass the defect band D 2 grows at the expense of the OH groups. This result is explained by the oxidation of the organic compounds which, in this temperature range, leads to the formation of the both species (OH) and those related to siloxane rings. 29Si MAS NMR results are in agreement with the Raman study.
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  • 9
    ISSN: 1573-4846
    Keywords: II–VI semiconductor ; ultrasounds ; quantum dots ; nanoparticles ; DCCA
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract SiO2 gels obtained by sonocatalytic method combined with DCCA were used as host-matrices for extremely fine dispersions of CdS semiconductor particles. Small crystallites were produced “in situ” by H2S gas diffusion method. The particles were characterized by TEM and HRTEM, EXAFS, UV-Vis and Raman spectroscopies. The size of crystallites ranged from 5 to 10 nm. The optical transmission spectra showed the characteristic blue shift as a function of the particles size, as predicted by the theory. The optical and mechanical qualities of the samples were substantially improved by an infiltration method using a sono-sol which sealed the superficial pores thus ensuring greater longevity and the possibility of obtaining transparent gels by polishing.
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  • 10
    ISSN: 1615-6102
    Keywords: Lupinus albus ; Nitrogen fixation ; Oxygen diffusion ; Glycoprotein ; Immunocytochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The monoclonal antibodies MAC236 and MAC265, raised against a soluble component of pea nodules, were used to elucidate the presence and subcellular localization of glycoprotein epitopes during the development of lupin (Lupinus albus L. cv. Multolupa) nodules, by means of immunocytochemistry and Western blot analysis. These antibodies recognize a single band of 95 kDa in pea, soybean and bean nodules, whilst two different bands of 240 and 135 kDa cross-react with MAC236 and MAC265 respectively in lupin nodules. This fact may indicate that the recognized epitopes can be present in different subcellular compartments and/or play different roles through the development of functional nodules. The results show that MAC265 is mainly associated with Bradyrhizobium infection and with the development of nodule primordium, in the first stages of nodulation. MAC265 is also detected when glycoprotein transport takes place across the cytoplasm and the cell wall, and also in the intercellular spaces of the middle cortex, attached to cell walls. The amount of MAC265 remains constant through nodule development. In contrast the amount of MAC236 increases with nodule age, parallel to the establishment of nitrogenase activity. This antibody is localized in cytoplasmic globules attached to the inner side of cell walls in the middle cortex, and mainly in the matrix filling the intercellular spaces of the middle and inner cortex. This main site of localization of MAC236 may indicate a role in the functioning of the oxygen diffusion barrier.
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