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The current status of galaxy formation

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Research in Astronomy and Astrophysics 2012年第8期12卷 917-946页

作者： Joseph Silk gary A.Mamon Institut d'Astrophysique de Paris (UMR 7095:CNRS&UPMC) 98 bis Boulevard AragoParis 75014France Department of Physics and Astronomy 3701 San Martin DriveThe Johns Hopkins UniversityBaltimore MD 21218USA Beecroft Institute of Particle Astrophysics and Cosmology 1 Keble RoadUniversity of OxfordOxford OX1 3RHUK

Understanding galaxy formation is one of the most pressing issues in cos- mology. We review the current status of galaxy formation from both an observational and a theoretical perspective, and summarize the prospects ... 详细信息

关键词： galaxy: formation -- galaxies: evolution -- galaxies: star formation --galaxies: active

Type Ⅰ interferon receptor knockout mice as models for infection of highly pathogenic viruses with outbreak potential

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Zoological Research 2018年第1期39卷 3-14页

作者： gary Wong Xiang-Guo Qiu Shenzhen Key Laboratory of Pathogen and Immunity State Key Discipline of Infectious DiseaseShenzhen Third People's HospitalShenzhen Guangzhou 518020China Key Laboratory of Pathogenic Microbiology and Immunology Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China Special Pathogens Program National Microbiology LaboratoryPublic Health Agency of CanadaWinnipegManitoba R3E 3R2Canada Department of Medical Microbiology and Infectious Diseases University of ManitobaWinnipegManitoba R3E 0J9Canada

Due to their inability to generate a complete immune response, mice knockout for type I interferon （IFN） receptors （Ifnar-/-） are more susceptible to viral infections, and are thus commonly used for pathogenesis studies. This mouse model has been used to study many diseases caused by highly pathogenic viruses from many families, including the Flaviviridae, Filoviridae, Arenaviridae, Bunyaviridae, Henipaviridae, and Togaviridae. In this review, we summarize the findings from these animal studies, and discuss the pros and cons of using this model versus other known methods for studying pathogenesis in animals.

关键词： Ifnar Mice Animal model Flavivirus Filovirus Arenavirus Bunyavirus Henipavirus Togavirus

Development of Data Sheets for Statistical Evaluation of Fatigue Data

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Journal of Iron and Steel Research International 2011年第5期18卷 70-78页

作者： gary Marquis Timo Bjrk Lappeenranta University of Technology

Instructions were developed for statistical analysis of the laboratory fatigue data step-by-step. Practical cases for solving several questions raised in the treatment of test data,which involved estimation of necessary sample size,verification of the statistical equivalence of the collated sets of data,and determination of characteristic curves in different cases,were given by using the methods and formulae in the document IIW-XIII-2138-06 （best practice guide on the statistical analysis of fatigue data） as a demonstration of various statistical methods of developing a sound procedure for creating reliable calculation rules for the fatigue analysis.

关键词： fatigue verification statistical equivalence

Some Oscillatory Singular Integrals on Herz-type Spaces (Ⅱ)

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Acta Mathematicae Applicatae Sinica 2002年第3期18卷 365-376页

作者： gary Sampson Department of Mathematics Auburn University AuburnAL 36849-5310USA

In this paper, the authors prove that some oscillatory singular integral operators of non-convolution type with non-polynomial phases are bounded from the Herz-type Hardy spaces to the Herz spaces and from the Hardy spaces associated with the Beurling algebras to the Beurling algebras in higher dimensions, even though it is well-known that these operators are not bounded from the Hardy space H1(Rn) into the Lebesgue spaceL1(Rn).

关键词： Oscillatory singular integral phase Lebesgue space Herz space Beurling algebra Hardy space

An evaluation of the bioavailability and bioaccumulation of selected metalso ccurring in a wetland area on the volcanic island of Guam,Western Pacific Ocean

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Journal of Environmental Sciences 2009年第11期21卷 1547-1551页

作者： Bob Wilson Brian Pyatt gary Denton School of Science and Technology Nottingham Trent University Water and Environmental Research Institute of the Western Pacific University of Guam

This initial research examined the presence, distribution and bioavailability of Cu, Cr, Ni, Mn and Fe in a wetland area of southern Guam. The research sites are within an area covered with saporite, a soil type derived from volcanic deposits on the island. Leaf tissue of Pandanus tectorius was extracted and analysed to determine the bioaccumulation of the target metals. Metal accumulation at sites considered aerobic and anaerobic was investigated together with an attempt to correlate actual accumulation of the target metals in the plant tissue with a recognised bioavailability indicator, in this case, three step sequential extraction scheme. Manganese was found to be accumulated in relatively high concentrations and to a lesser extent Cu was also accumulated. Chromium, Ni and Fe however exhibited very low accumulation factors. Accumulation of Mn in particular was significantly affected by aerobic conditions whereas the converse effect was experienced by Cu. Significant correlation between various steps of a Sequential Extraction Scheme and actual accumulation was not achieved although the degree of aerobic conditions at each site and soil pH did affect concentrations of metals extracted by differing steps of SES. Results obtained suggest that further research in the area should be undertaken using different plant species and tissues.

关键词： Guam bioaccumulation sequential extraction bioavailability accumulation factor heavy metals

Did ZIKV evolve to be more dangerous? A new clue towards neurovirulence

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National Science Review 2018年第2期5卷 121-122页

作者： gary Wong George F.Gao Guangdong Key Laboratory for Diagnosis and Treatment of Emerging Infectious Diseases Shenzhen Key Laboratory of Pathogen and Immunity Shenzhen Third People's Hospital CAS Key Laboratory of Pathogenic Microbiology and Immunology Institute of MicrobiologyChinese Academy of Sciences

Before 2015,Zika virus(ZIKV)was a little-known flavivirus that caused sporadic symptomatic infections in humans(under 20 reported cases,but likely manymore unreported asymptomatic cases)in the decades following its di... 详细信息

关键词： ZIKA virus FLAVIVIRUSES EPIDEMICS

Numerical simulation of low-flow channel evolution due to sediment augmentation

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International Journal of Sediment Research 2012年第3期27卷 351-361页

作者： Hiroshi MIWA gary PARKer Department of Civil Engineering Maizuru National College of Technology Department of Civil and Environmental Engineering University of Illinois at Urbana-Champaign

For the conservation and restoration of river environment,a sediment replenishment technique, which conveys a part of the sediments excavated and/or dredged from reservoirs to the river below dams is developed and has been implemented tentatively in several *** placed as replenishment can be flushed out and transported downstream by floodwater or dam *** flushed sediments are expected to contribute to the control of degradation and the variation of the low-flow ***,this technique is in the development stage because there are many unknown ***,systematic investigations are necessary for practical management of the *** this study,the effects of the location of replenishment sediment on sediment flushing and on control of degradation were investigated by means of flume experiments.A two-dimensional numerical model was also developed to further investigate the effects of sediment augmentation on river *** numerical model treats bank erosion and sediment transport over fixed beds. The simulation results were verified against the experimental *** flushing process of replenishment sediment was investigated first,and then its effect as a countermeasure for river bed degradation was *** are summarized as follows:(1) Augmentation at upper riffles is effective for flushing of replenishment sediment and variation of low-flow channel.(2) Amelioration of degradation can be found in the cases of two types of *** amelioration effect of upper riffle placement was larger than that of lower riffle placement(3) Aggradation rate of the bed near the replenishment site in the fixed bed is large in the lower riffle placement compared with the upper riffle placement.(4) The numerical model was found to be generally successful as a predictive tool.

关键词： River restoration Low-flow channel Degradation Sediment replenishment Numerical simulation

Low power 3.1–10.6 GHz IR-UWB transmitter for Gbps wireless communications

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Science China(Information Sciences) 2011年第5期54卷 1094-1102页

作者： WANG Albert ZHANG gary Department of Electrical Engineering University of California Riverside 92521 USA Skyworks Solutions Inc. Irvine CA USA

This paper reviews and discusses the design of a low-power single-full-band (3.1-10.6 GHz) non- carrier impulse-radio ultra wideband (UWB) transmitter featuring 5th-order Gaussian derivative pulse shaping, integrated BPSK modulation, and 2.5 kV whole-chip ESD (electrostatic discharge) protection. The UWB transmitter design has been implemented in a commercial 0.18 μm CMOS technology with a very small die size of 0.25 mm2. The fabricated chips have demonstrated full functionality, extremely low power consumption of 0.14 pJ/p-mV, and an ultra short pulse width of 394 ps. This ESD-protected UWB transmitter has the potential to support wireless streaming to gigabit per second (Gbps).

关键词： UWB impulse radio BPSK transmitter ESD protection

Spermatids do it differently! Paip2a--the essential regulator of spermiogenesis？

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Asian Journal of Andrology 2011年第1期13卷 122-124页

作者： Eileen A McLaughlin gary R Hime ARC Centre of Excellence in Biotechnology and Development Callaghan NSW 2308 Australia School of Environmental and Life Sciences University of Newcastle Callaghan NSW 2308 Australia Anatomy and Cell Biology University of Melbourne Parkville VIC 3010 Australia

The mechanisms underpinning the latter stages of spermiogenesis are poorly understood and male germ cells have been presumed to extensively employ post-tran- scriptional regulatory machinery,

关键词： .Spermatids Paip translational activation RNA-binding