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Silica-Metal Spherules in Ignimbrites of Southern Primorye,Russia

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Journal of Earth Science 2011年第1期22卷 20-31页

作者： andrei V Grebennikov Far East Geological Institute Prospect Stoletia 159 690022 Vladivostok Russia

A comprehensive mineralogical-geochemical and petrological study of ignimbrites from the Yakut-Gora volcanic depression （Primorye, Far Eastern Russia） revealed a wide distribution of silica-metal spherules （＂globules＂） that are typical liquid immiscibility resultant. The metallic portion of a spherule （composition varies from low-carbon iron to cohenite） borders gas pores and is rimmed by symplectite that consists of quartz, magnetite, and silica-potassic glass. This allows us to consider that the whole formation formed through reduction of the enclosing silicate melt. Abundant evidence of high reduction states of ignimbrite melts and the presence of iron carbides suggest an H2-CH4 composition of the fluidal phase in ignimbrite magmas.

关键词： spherule native iron ignimbrite tektite Primorye Russia.

Influence of Bottom Inclination on the Flow Structure in a Rotating Convective Layer

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Fluid Dynamics & Materials Processing 2024年第4期20卷 739-748页

作者： andrei Vasiliev andrei Sukhanovskii Elena Popova Laboratory of Turbulence Institute of Continuous Media Mechanics UB RASPerm614013Russia

The formation of convective flows in a rotating cylindrical layer with an inclined bottom and free surface is *** is driven by localized cooling at the center of the upper free surface and by rim heating at the bottom near the *** horizontal temperature difference in a rotating layer leads to the formation of a convective flow with a complex *** mean meridional circulation,consisting of three cells,provides a strongly non-uniform differential *** a result of the instability of the main cyclonic zonal flow,the train of baroclinic waves appears in the upper *** baroclinic waves provide most of the heat transfer in the middle radii and are responsible for strong temperature and velocity *** is shown that the inclination of the bottom is a crucial factor for the structure of the convective cells and the dynamics of the baroclinic *** increase in the inclination angle leads to a significant increase in the energy of the *** obtained results may be important for heat and mass transfer in various geophysical and industrial systems,including transport of various additives and impurities in rotating crucibles,and crystallization processes.

关键词： Laboratory modeling global atmospheric circulation baroclinic waves beta-effect

Fossil history of Mesozoic weevils （Coleoptera： Curculionoidea）

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Insect Science 2012年第6期19卷 683-698页

作者： andrei A. Legalov Laboratory of Phylogeny and Faunogenesis Institute of Systemafics and Ecology of Animals SB RAS Novosibirsk Russia

The first synopsis of Mesozoic weevils （Curculionoidea： Coleoptera） is pre- sented. Changes of family, genera and species abundance during the Mesozoic revealed three distributional patterns. The Jurassic （Karatau） fauna was dominated by the Nemony- chidae. During the Early Cretaceous （beginning at the Jurassic/Cretaceous border）, the Ithyceridae was the prevalent group with a significant role played by the Nemonychidae. In the Late Cretaceous （Cenomanian and Turonian）, the major groups were the Curculion- idae and Brentidae. Obviously, the change of weevil fauna during this period was due to the expansion of the angiosperms, which provided multiple niches in their vegetative and reproductive organs for weevil development.

关键词： Coleoptera Curculionoidea faunistic analysis fossil record Mesozoic,trophic levels

Nature Inspired Hay Fever Therapy

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Journal of Bionic Engineering 2008年第4期5卷 335-339页

作者： andrei P. Sommer Institute of Micro and Nanomaterials University of Ulm

The survival oriented adaptation of evolved biosystems to variations in their environment is a selective optimization process. Recognizing the optimised end product and its functionality is the classical arena of bionic engineering. In a primordial world, however, the molecular organization and functions of prebiotic systems were solely defined by formative processes in their physical and chemical environment, for instance, the interplay between interfacial water layers on surfaces and solar light. The formative potential of the interplay between light （laser light） and interfacial water layers on surfaces was recently exploited in the formation of supercubane carbon nanocrystals. In evolved biosystems the formative potential of interracial water layers can still be activated by light. Here we report a case of hay fever, which was successfully treated in the course of a facial rejuvenation program starting in November 2007. Targeting primarily interfacial water layers on elastin fibres in the wrinkled areas, we presumably also activated mast cells in the nasal mucosa, reported to progressively decrease in the nasal mucosa of the rabbit, when frequently irradiated. Hay fever is induced by the release of mediators, especially histamine, a process associated with the degranulation of mast cells. Decrease in mast cells numbers implies a decrease in the release of histamine. To the best of our knowledge this is the first report on the treatment of hay fever with visible light. This approach was inspired by bionic thinking, and could help ameliorating the condition of millions of people suffering from hay fever world wide.

关键词： allergic rhinitis biomimetic triangle crystalline interracial water layers light diamond elastin

Assessment of risks, implications, and opportunities of waterborne neurotoxic pesticides

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Journal of Environmental Sciences 2023年第3期125卷 735-741页

作者： Delaram Dara andrei P.Drabovich Division of Analytical and Environmental Toxicology Department of Laboratory Medicine and PathologyFaculty of Medicine and DentistryUniversity of AlbertaAlberta T6G 2G3Canada

Pesticides are a well-known family of chemicals that have contaminated water systems globally. Four common subfamilies of pesticides include organochlorines, organophosphates, pyrethroids, and carbamate insecticides which have been shown to adversely affect the human nervous system. Studies have shown a link between pesticide exposure and decreased viability, proliferation, migration, and differentiation of murine neural stem cells. Besides human exposure directly through water systems, additional factors such as pesticide bioaccumulation, biomagnification and potential synergism due to co-exposure to other environmental contaminants must be considered. A possible avenue to investigate the molecular mechanisms and biomolecules impacted by the various classes of pesticides includes the field of-omics. Discovery of the precise molecular mechanisms behind pesticidemediated neurodegenerative disorders may facilitate development of targeted ***, discovery of pesticide biodegradation pathways may enable novel approaches for water system bioremediation using genetically engineered microorganisms. In this minireview, we discuss recently established harmful impacts of various categories of pesticides on the nervous system and the application of-omics field for discovery, validation, and mitigation of pesticide neurotoxicity.

关键词： Neurotoxic pesticides Water pollution Neural stem cells Omics approaches Drug discovery

Mathieu Progressive Waves

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Communications in Theoretical Physics 2011年第10期56卷 733-739页

作者： andrei B.Utkin INOV-Inesc Inovacao Rua Alves Redol 9Lisbon 1000-029Portugal ICEMSInstituto Superior TecnicoTecnical University of LisbonAv.Rovisco Pais 1Lisbon 1049-001Portugal

A new family of exact solutions to the wave equation representing relatively undistorted progressive waves is constructed using separation of variables in the elliptic cylindrical coordinates and one of the Bateman transforms. The general form of this Bateman transform in an orthogonal eurvilinear cylindrical coordinate system is discussed and a specific problem of physical feasibility of the obtained solutions, connected with their dependence on the cyclic coordinate, is addressed. The limiting case of zero eccentricity, in which the elliptic cylindrical coordinates turn into their circular cylindrical counterparts, is shown to correspond to the focused wave modes of the Bessel-Gauss type.

关键词： wave equation Bateman transform progressive wave Mathieu function

Message from Guest Editors of the CVM 2024 Special Issue

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Computational Visual Media 2024年第4期10卷 611-612页

作者： andrei Sharf Fang-Lue Zhang Department of Computer Science Ben-Gurion University Beer-Sheva 84105 Israel School of Engineering and Computer Science Victoria University of Wellington Wellington6012 NewZealand

The Computational Visual Media(CVM)conference series is intended to provide a prominent international forum for exchanging innovative research ideas and significant computational methodologies that either underpin or ... 详细信息

关键词： CVM Guest Media

HEALTH ENGAGED ARCHITECTURE IN THE CONTEXT OF COVID-19

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Journal of Green Building 2020年第2期15卷 185-212页

作者： Bogdan andrei Fezi Habil.Arch. “Ion Mincu”University of Architecture and UrbanismBucharestRomania

In the context of the COVID-19,this article reveals the potential of architecture and urbanism in the prevention and control of epidemics and in playing an active role in human *** historical approach shows that the same space-controlled measures against pandemics were used for centuries to combat leper or plague:quarantine,isolation and *** fight against tuberculosis led,from the 1830s,to the hygiene movement which facilitated current principles for a healthy architecture regarding sunlight and *** the 1920s,hygienic concepts constituted the foundation for modernist architecture and *** the advent of antibiotics,in the 1940s,medicine was emancipated from *** the 1970s,the criticism of the social modernist shortcoming led to the New Urbanism or Urban Village movements and environmental issues to Green Architecture and *** paper investigates how the present pandemic confirms the last decades warnings and the previous concerns about the correspondence between population density and mortality *** article examines the linkages between scale in the built environment,epidemiology and *** goal is to determine the place of architecture and urbanism in social resilience management during *** for health engaged architecture and urbanism are indicated at different scales:object scale-hygiene;people scale-distancing and isolation;interior spaces-air control by ventilation,filtering and humidifying;residential-intermediate housing,public spaces between buildings-the key for social interactions;working-telecommuting,size and dispersion;shopping-proximity and downscaling;transportation-walking,bicycling,shared mobility and robo-taxies;and higher scale-mixed use *** certifications such as BREAM and LEED may need to implement similar guidelines for public *** building movements like Fitwel and WELL Building Standard have already taken steps to foster health

关键词： COVID-19 SARS-CoV-2 coronavirus epidemics pandemics architecture urbanism health ecology

Gasoline-derived methyl tert-butyl ether as a potential obesogen linked to metabolic syndrome

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Journal of Environmental Sciences 2020年第5期32卷 209-211页

作者： Yasmine Rais andrei PDrabovich Division of Analytical and Environmental Toxicology Department of Laboratory Medicine and PathologyFaculty of Medicine and DentistryUniversity of AlbertaEdmontonCanada

The power and efficiency of gasoline engines is often improved through the use of fuel with high octane *** octane rating of fuel could be further increased with oxygenate additives such as alcohols and ethers,with me... 详细信息

关键词： Methyl tert-butyl ether Gasoline additives Adipogenesis Metabolic syndrome Endocrine-disrupting chemicals Obesogens