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  • 1
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    Interannual variations in distribution and abundance of Japanese jack mackerel Trachurus japonicus larvae in the East China Sea (2016)
    Oxford University Press
    Details
    Publication Date: 2016-03-23
    Description: We examined the interannual variations in distribution and abundance of Japanese jack mackerel Trachurus japonicus larvae 〈5 mm standard length (SL), based on sampling surveys over a broad area of the shelf break region of the East China Sea (ECS) during late winter and spring for 12 years from 2001 to 2012. Larval abundances in late winter were higher than those in spring. In late winter, ratios (expressed as %) of larval abundance in the southern ECS south of 28°N to the whole study area were highest during the study period, with values ranging from 80.0 to 95.8%. In spring, the ratios in the southern ECS were still high (34.3–88.8%), although the values increased slightly in the northern and central ECS. There was no significant interannual variation in the centre of distribution of the larvae, suggesting that the formation of spawning grounds would be related to topographic rather than hydrographic conditions. Habitat temperature of larvae in the central and southern ECS was ~3–5°C higher than that in the northern ECS throughout the study period, indicating that larval growth and survival processes may differ between the two areas. In the southern ECS, larval abundances fluctuated largely from year-to-year, and the interannual variations were closely correlated with water temperature and chlorophyll a concentration. However, larval abundance did not correlate with an index of recruited juveniles (~50–75 mm SL) in the ECS, suggesting that mortality during the late larval and early juvenile stages is responsible for recruitment success or failure.
    Print ISSN: 1054-3139
    Electronic ISSN: 1095-9289
    Topics: Biology , Geosciences , Physics
    Published by Oxford University Press
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  • 2
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    Silician magnetite from the Dales Gorge Member of the Brockman Iron Formation, Hamersley Group, Western Australia (2012)
    Mineralogical Society of America
    Details
    Publication Date: 2012-01-01
    Description: We report silician magnetite from banded iron formation (BIF) in the Dales Gorge Member of the Brockman Iron Formation, Hamersley Group, Western Australia. Magnetite mesobands typically consisting of individual ~100 µm microlaminae are revealed to be composed of silician magnetite overgrowths on magnetite. Silician magnetite overgrowths contain from 1 to 3 wt% SiO2, whereas (low-Si) magnetite domains contain less than 1 wt% SiO2. Silicon solid solution is present in the magnetite crystal lattice as determined by in situ micro-X-ray diffraction and high-resolution transmission electron microscopy. Three textures are distinguished in magnetite mesobands: (1) magnetite sub-microlaminae with silician magnetite overgrowths, (2) recrystallized magnetite fragments with silician magnetite overgrowths, and (3) a complex intergrowth of magnetite and silician magnetite. All three textures are found in magnetite mesobands from the BIF4–5 and BIF12–16 macrobands of the Dales Gorge type-section drill core DDH-47A from Wittenoom, Western Australia. Magnetite domains contain numerous submicrometer-to-micrometer inclusions of quartz, carbonate, stilpnomelane, and apatite, whereas silician magnetite overgrowths are devoid of mineral inclusions. The presence of mineral inclusions in magnetite indicates the BIF oxide precipitate was not chemically pure iron oxyhydroxide/oxide. Magnetite domains display textures formed during soft sediment deformation that are the earliest and best preserved relict sedimentary structures in this BIF. Silician magnetite is the dominant iron oxide in the Dales Gorge BIF and is present in many other sub-greenschist facies BIFs worldwide. We suggest the former presence of organic matter creates reducing conditions necessary to stabilize silician magnetite. Thus, silician magnetite is a potential biosignature in BIFs.
    Print ISSN: 0003-004X
    Electronic ISSN: 1945-3027
    Topics: Geosciences
    Published by Mineralogical Society of America
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  • 3
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    Auditory spatial receptive fields created by multiplication (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-04-17
    Description: Examples of multiplication by neurons or neural circuits are scarce, although many computational models use this basic operation. The owl's auditory system computes interaural time (ITD) and level (ILD) differences to create a two-dimensional map of auditory space. Space-specific neurons are selective for combinations of ITD and ILD, which define, respectively, the horizontal and vertical dimensions of their receptive fields. A multiplication of separate postsynaptic potentials tuned to ITD and ILD, rather than an addition, can account for the subthreshold responses of these neurons to ITD-ILD pairs. Other nonlinear processes improve the spatial tuning of the spike output and reduce the fit to the multiplicative model.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pena, J L -- Konishi, M -- DC00134/DC/NIDCD NIH HHS/ -- New York, N.Y. -- Science. 2001 Apr 13;292(5515):249-52.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Biology 216-76, California Institute of Technology, Pasadena, CA 91125, USA. jose@etho.caltech.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11303092" target="_blank"〉PubMed〈/a〉
    Keywords: Acoustic Stimulation ; Action Potentials ; Animals ; Auditory Pathways ; Auditory Perception/*physiology ; Female ; Inferior Colliculi/cytology/*physiology ; Male ; Mathematics ; Membrane Potentials ; Neurons/*physiology ; Sound Localization/*physiology ; Strigiformes/*physiology ; *Synaptic Transmission
    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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  • 4
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    Contributions of bird studies to biology (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-10-27
    Description: Birds are widely distributed, highly diversified, and exhibit behavior and social organizations equal in complexity to mammals, yet they are generally more conspicuous and approachable in natural environments. These attributes make birds excellent subjects in many areas of biological research. The topics in which studies on birds have figured prominently include the mechanisms of species formation, the regulation of the distribution and abundance of animals, the effects of the environment on behavior and physiology, the biological and evolutionary significance of variations in social organizations, the encoding of information in animal communication, the sensory basis for migration and navigation, the effects of hormones on nerve cells and behavior, the ontogeny of brain and behavior, and the structure and function of the vertebrate brain. The outstanding record of avian research suggests that birds will continue to provide important models for developing and testing new ideas in various fields of biology.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Konishi, M -- Emlen, S T -- Ricklefs, R E -- Wingfield, J C -- New York, N.Y. -- Science. 1989 Oct 27;246(4929):465-72.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Biology, California Institute of Technology, Pasadena 91125.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2683069" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Physiological ; Animals ; Behavior, Animal/physiology ; Biological Evolution ; Biology/*methods ; Birds/*physiology ; Ecology ; Ethology/methods ; Neurobiology/methods
    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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  • 5
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    Center-surround organization of auditory receptive fields in the owl (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-11-17
    Description: The spinal receptive fields of specialized auditory units in the midbrain of the barn owl (Tyto abla) contain two functionally antagonistic areas: an excitatory center and an inhibitory surround. The response of these units represents the balance of acoustic activation of the two areas, which in turn depends upon the location, intensity, and spectral content of the sound stimulus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Knudsen, E I -- Konishi, M -- New York, N.Y. -- Science. 1978 Nov 17;202(4369):778-80.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/715444" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Auditory Perception/*physiology ; Birds/*physiology ; Brain Mapping ; Mesencephalon/physiology ; Neural Inhibition ; Orientation/*physiology
    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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  • 6
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    The oilbird: hearing and echolocation (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-04-27
    Description: Oilbirds can navigate in total darkness by echolocation. The sound energy in their sonar cries is unevenly distributed over the range from about 1 to 15 kilohertz, with a dominant frequency range of 1.5 to 2.5 kilohertz. This corresponds to the most sensitive range of their hearing as determined by neurophysiological methods. Behavioral tests in their home cave indicate that the smallest object avoided by this is a disk 20 centimeters in diameter.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Konishi, M -- Knudsen, E I -- New York, N.Y. -- Science. 1979 Apr 27;204(4391):425-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/441731" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Birds/*physiology ; Echolocation/*physiology ; Orientation/*physiology ; Vocalization, Animal/physiology
    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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  • 7
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    Hormone-induced sexual differentiation of brain and behavior in zebra finches (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-06-20
    Description: The male zebra finch sings, whereas the female does not. This behavioral dimorphism is correlated with the presence of morphological sex differences within the neural substrate that mediates this behavior, the song system. When a female chick is exposed to 17beta-estradiol her song system is subsequently masculinized. Either testosterone or 5alpha-dihydrotestosterone may then induce such a female to sing when an adult.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gurney, M E -- Konishi, M -- New York, N.Y. -- Science. 1980 Jun 20;208(4450):1380-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17775725" target="_blank"〉PubMed〈/a〉
    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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  • 8
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    A neural map of auditory space in the owl (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-05-19
    Description: Auditory units that responded to sound only when it originated from a limited area of space were found in the lateral and anterior portions of the midbrain auditory nucleus of the owl (Tyto alba). The areas of space to which these units responded (their receptive fields) were largely independent of the nature and intensity of the sound stimulus. The units were arranged systematically within the midbrain auditory nucleus according to the relative locations of their receptive fields, thus creating a physiological map of auditory space.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Knudsen, E I -- Konishi, M -- New York, N.Y. -- Science. 1978 May 19;200(4343):795-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/644324" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Auditory Perception/*physiology ; Birds/anatomy & histology/*physiology ; Brain Mapping ; Mesencephalon/cytology/*physiology
    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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  • 9
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    PREVENIR: Japan-Argentina Cooperation Project for Heavy Rain and Urban Flood Disaster Prevention (2023)
    In:  XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
    Details
    Publication Date: 2023-05-16
    Description: This presentation provides an overall summary of the project PREVENIR, an international cooperation project between Argentina and Japan since 2022 for five years under the Science and Technology Research Partnership for Sustainable Development (SATREPS) program jointly funded by the Japan International Cooperation Agency (JICA) and the Japan Science and Technology Agency (JST). The main goal is to develop an impact-based early warning system for heavy rains and urban floods designed for highly vulnerable urban basins in Buenos Aires Province and in Córdoba Province, Argentina. PREVENIR takes advantage of leading research on simulations and Big Data Assimilation (BDA) with the Japan’s flagship supercomputer “Fugaku” and its predecessor “K” and develops a total package for disaster prevention, namely, monitoring, quantitative precipitation estimates (QPE), nowcasting, BDA and NWP, hydrological model prediction, warning communications, public education, and capacity building. Here, the Japanese leading institutions in the scientific research and operational services, i.e., RIKEN, Osaka University, the International Centre for Water Hazard and Risk Management (ICHARM), and the Japan Meteorological Agency (JMA) closely work with the Argentinian counterparts, i.e., the National Meteorological Service, the National Water Institute, and the National Research Council of Argentina under the strong support of JICA, JST, and Argentinian Foreign Affairs Ministry. Heavy rains and urban floods are important global issues under the changing climate. The total package for disaster prevention will be the first of its kind in Argentina and will provide useful tools and recommendations for the implementation of similar systems in other parts of the world.
    Language: English
    Type: info:eu-repo/semantics/conferenceObject
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  • 10
    Electronic Resource
    Electronic Resource
    Photoluminescence and luminescence excitation spectra in ZnSiP2 (1983)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 2 (1983), S. 2034-2038 
    Details
    ISSN: 0392-6737
    Keywords: Photoluminescence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto Si sono fatte misurazioni degli spettri di fotoluminescenze e di eccitazione luminescenza di ZnSiP2 a 4.2 K e si sono ottenuti due risultati. Uno è l'osservazione di una nuova linea netta di emissione a 1.980 eV, dovuta all'eccitone legato associato col gap pseudodiretto. L'altro è l'osservazione di un'altra nuova serie di linee di assorbimento nello spettro di eccitazione di luminescenza di una linea di emissione a 1.984 eV, oltre a quelle riportate in precedenza. Questi risultati indicano che in ZnSiP2 si verificano transizioni radiative sia per gap indiretti che per gap pseudodiretti.
    Abstract: Резюме При 4.2 К проведены измерения спектров фотолюминесцендии и спектры возбуждения люминесценцией в ZnSiP2 и получено два результата. Один результат представляет наблюдение новой резкой линии излучения при 1.980 эВ. обусловленной связанным экситоном, ассоциированным с псевдопрямым интервалом. Второй результат предсталяет наблюдение новых линий поглошения в спектре возбуждения люминесценцией линии излучения при 1.984. эВ. Эти результаты указывают, что в ZnSiP2 радиационные переходы происходят при косвенных и псевдопрямых интервалах.
    Notes: Summary Measurements of photoluminescence and luminescence excitation spectra of ZnSiP2 have been performed at 4.2K and two results were obtained. One is the observation of a new sharp emission line at 1.980 eV, due to the bound exciton associated with the pseudodirect gap. The other is the observation of another new series of absorption lines in the luminescence excitation spectrum of an emission line, at 1.984 eV, in addition to those reported previously. These results indicate that in ZnSiP2 radiative transitions occur at both the indirect and the pseudodirect gaps.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02457905
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