检索结果-南通市图书馆

Big Earth Data 2022年第3期6卷 340-357页

作者： Jeffery A.Thompson Mary J.Brodzik Kevin A.T.silverstein mason A.Hurley Nathan L.Carlson Minnesota supercomputing Institute University of MinnesotaMinneapolisMNUSA GEMs Informatics Initiative University of MinnesotaMinneapolisMNUSA National snow and Ice Data Center Cooperative Institute for Research in Environmental SciencesUniversity of ColoradoBoulderCOUSA

Although we live in an era of unprecedented quantities and access to data,deriving actionable information from raw data is a hard *** observation systems(EOs)have experienced rapid growth and uptake in recent decades,and the rate at which we obtain remotely sensed images is *** significant effort and attention has been devoted to designing systems that deliver analytics ready imagery faster,less attention has been devoted to developing analytical frameworks that enable EOs to be seamlessly integrated with other data for quantitative *** global grid systems(DGGs)have been proposed as one potential solution that addresses the challenge of geospatial data integration and ***,we propose the systematic extension of EAsE-Grid in order to provide DGGs-like characteristics for EOs data *** describe the extensions as well as present implementation as an application programming interface(API),which forms part of the University of Minnesota’s GEMs(Genetic x Environment x Management x socioeconomic)Informatics Center’s API portfolio.

关键词： Discrete global grid systems DGGs EAsE Grid coordinate reference systems

Will there be Unexpected Geological Discoveries?

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Earth science 2022年第5期33卷 1337-1337页

作者： Roger mason Zhenbing she school of Earth sciences China University of GeosciencesWuhan430074China

scientific knowledge often advances by extending established theories and research methods into new *** Earth science example is the extension of geological mapping to previously unvisited *** this were the only way to advance,unexpected discoveries would become rarer as time goes on and geologists map more and more of the Earth’s surface.

关键词： surface rare unexpected

Hepatobiliary complications of alveolar echinococcosis: A long-term follow-up study

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2015年第16期21卷 4925-4932页

作者： Tilmann Graeter Franziska Ehing suemeyra Oeztuerk Richard Andrew mason Mark Martin Haenle Wolfgang Kratzer Thomas seufferlein Beate Gruener Department of Interventional and Diagnostic Radiology University Hospital Ulm Department of Internal Medicine I University Hospital Ulm Louis stokes Cleveland Department of Veterans Affairs Medical Center section of Infectious Diseases and Clinical Immunology Comprehensive Infectious Diseases Center Ulm

AIM:To determine the long-term hepatobiliary complications of alveolar echinococcosis(AE) and treatment options using interventional ***:Included in the study were 35 patients with AE enrolled in the Echinococcus Multilocularis Data Bank of the University Hospital of *** underwent endoscopic intervention for treatment of hepatobiliary complications between 1979 and ***' epidemiologic data, clinical symptoms, and indications for the intervention, the type of intervention and any additional procedures, hepatic laboratory parameters(pre- and post-intervention), medication and surgical treatment(pre- and post-intervention), as well as complications associated with the intervention and patients‘ subsequent clinical courses were *** order to compare patients with AE with and without history of intervention, data from an additional 322 patients with AE who had not experienced hepatobiliary complications and had not undergone endoscopic intervention were retrieved and ***:Included in the study were 22 male and 13 female patients whose average age at first diagnosis was 48.1 years and 52.7 years at the time of *** average time elapsed between first diagnosis and onset of hepatobiliary complications was 3.7 *** most common symptoms were jaundice, abdominal pains, and weight *** of interventions per patient ranged from one to *** retrograde cholangiopancreatography(ERCP)was most frequently performed in combination with stent placement(82.9%),followed by percutaneous transhepatic cholangiodrainage(31.4%)and ERCP without stent placement(22.9%).In 14.3%of cases,magnetic resonance cholangiopancreatography was performed.A total of eight patients received a biliary stent.A comparison of biochemical hepatic function parameters at first diagnosis between patients who had or had not undergone intervention revealed that these were significantly elevated in six patients who had undergone interven

关键词： Alveolar echinococcosis Endoscopic retrograde cholangiopancreatography Hepatobiliary complication Magnetic resonance cholangiopancreatography Percutaneous transhepatic cholangiodrainage stent placement Treatment

QuaPra: Efficient transcript assembly and quantification using quadratic programming with Apriori algorithm

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

science China(Life sciences) 2019年第7期62卷 937-946页

作者： Xiangjun Ji Weida Tong Baitang Ning Christopher E. mason David P. Kreil Pawel P. Labaj Geng Chen Tieliu shi The Center for Bioinformatics and Computational Biology Shanghai Key Laboratory of Regulatory BiologyInstitute of Biomedical Sciences and School of Life SciencesEast China Normal UniversityShanghai 200241China National Center for Toxicological Research U.S. Food and Drug Administration3900 NCTR RDJefferson AR 72079USA Department of Physiology and Biophysics Weill Cornell MedicineNew York 10065USA The HRH Prince Alwaleed Bin Talal Bin Abdulaziz Alsaud Institute for Computational Biomedicine New York 10021USA Feil Family Brain & Mind Research Institute New York 10065USA Chair of Bioinformatics Research Group Boku UniversityVienna A-1190Austria Malopolska Centre of Biotechnology Jagiellonian UniversityKrakow 30-387Poland APART Fellow Austrian Academy of ScienceVienna A-1190Austria National Center for International Research of Biological Targeting Diagnosis and Therapy Guangxi Key Laboratory of Biological Targeting Diagnosis and Therapy ResearchCollaborative Innovation Center for Targeting Tumor Diagnosis and TherapyGuangxi Medical UniversityNanning 530021China

RNA sequencing(RNA-seq) has greatly facilitated the exploring of transcriptome landscape for diverse ***,transcriptome reconstruction is still challenging due to various limitations of current tools and sequencing ***,we introduce an efficient tool,QuaPra(Quadratic Programming combined with Apriori),for accurate transcriptome assembly and *** could detect at least 26.5% more low abundance(0.1–1 FPKM) transcripts with over 2.7% increase of sensitivity and precision on simulated data compared to other currently popular ***,around one-quarter more known transcripts were correctly assembled by QuaPra than other assemblers on real sequencing *** is freely available at http://***/QuaPra/.

关键词： RNA-seq transcriptome reconstruction transcript assembly transcript quantification

Arabinan Metabolism during seed Development and Germination in Arabidopsis

在线全文

学校读者我要写书评

暂无评论

Molecular Plant 2009年第5期2卷 966-976页

作者： Leonardo D. Gomez Clare G. steele-King Louise Jones Jonathan M. Foster supachai Vuttipongchaikij simon J. McQueen-mason CNAP Department of Biology University of York Heslington York YO10 5YW United Kingdom

Arabinans are found in the pectic network of many cell walls, where, along with galactan, they are present as side chains of Rhamnogalacturonan I. Whilst arabinans have been reported to be abundant polymers in the cell walls of seeds from a range of plant species, their proposed role as a storage reserve has not been thoroughly investigated. In the cell walls of Arabidopsis seeds, arabinose accounts for approximately 40% of the monosaccharide composition of non- cellulosic polysaccharides of embryos. Arabinose levels decline to -15% during seedling establishment, indicating that cell wall arabinans may be mobilized during germination. Immunolocalization of arabinan in embryos, seeds, and seedlings reveals that arabinans accumulate in developing and mature embryos, but disappear during germination and seedling establishment. Experiments using 14C-arabinose show that it is readily incorporated and metabolized in growing seedlings, indicating an active catabolic pathway for this sugar. We found that depleting arabinans in seeds using a fungal arabinanase causes delayed seedling growth, lending support to the hypothesis that these polymers may help fuel early seedling growth.

关键词： Cell walls development embryogenesis and seed development Arabidopsis arabinan arabinose carbohydrate metabolism physiology of plant growth.

snake Robot Uses Obstacles for Propulsion

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

当代外语研究 2008年第4期 10-11页

作者： mason Inman 洪焰

人类在机器人研究方面已经取得了重大的突破,而用机器人模拟各种生物的特殊功能也一直是科研人员努力的方向。不久前挪威的机器人研究人员就开发出一种模拟蛇的行进方式的新型机器人。以PVC材质制造的这种机器人不仅不惧怕地面的障碍物... 详细信息

人类在机器人研究方面已经取得了重大的突破,而用机器人模拟各种生物的特殊功能也一直是科研人员努力的方向。不久前挪威的机器人研究人员就开发出一种模拟蛇的行进方式的新型机器人。以PVC材质制造的这种机器人不仅不惧怕地面的障碍物,还能凭借其作为动力。这为其在许多领域替代人力活动提供了可能。

关键词：机器人研究机器人模拟特殊功能科研人员障碍物研究人员挪威材质人类生物

sequestration of organic contaminants in soil/sediment and its impact on contaminant fate

在线全文

学校读者我要写书评

暂无评论

Acta Geochimica 2006年第S1期 262-263页

作者： mason B. Tomson Department of Civil and Environmental Engineering Rice University

Effects of low level laser treatment on the survival of axotomized retinal ganglion cells in adult Hamsters

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2014年第21期9卷 1863-1869页

作者： Kwok-Fai so mason Chin Pang Leung Qi Cui GHM Institute of CNs Regeneration and Guangdong Key Laboratory of Brain Function and DiseasesJinan University Department of Anatomy LKS Faculty of MedicineThe University of Hong Kong Department of Ophthalmology LKS Faculty of MedicineThe University of Hong Kong Department of Rehabilitation sciences The Hong Kong Polytechnic University

Injury to axons close to the neuronal bodies in the mammalian central nervous system causes a large proportion of parenting neurons to degenerate. It is known that optic nerve transection close to the eye in rodents leads to a loss of about half of retinal ganglion cells in 1 week and about 90% in 2 weeks. Using low level laser treatment in the present study, we demonstrated that treatment with helium-neon （660 nm） laser with 15 mW power could delay retinal ganglion cell death after optic nerve axotomy in adult hamsters. The effect was most apparent in the ifrst week with a short period of treatment time （5 minutes） in which 65–66% of retinal ganglion cells survived the optic nerve axotomy whereas 45–47% of retinal ganglion cells did so in optic nerve axotomy controls. We also found that single dose and early commencement of laser irradiation were important in protecting retinal ganglion cells following optic nerve axotomy. These ifndings thus convincingly show that appropriate laser treatment may be neuroprotective to retinal gan-glion cells.

关键词： low level laser treatment retinal ganglion cells optic nerve injury neuroprotection mi-croglial proliferation optic nerve axotomy

OPTIMIZATION OF A WAVE CANCELLATION MULTIHULL sHIP UsING CFD TOOLs

在线全文

学校读者我要写书评

暂无评论

Journal of Hydrodynamics 2002年第1期14卷 1-7页

作者： C. Yang, R. L■hner, O. soto (school of Computational sciences, George mason University Fairfax VA 22030-4444, UsA) sch. of Comp. sci. George Mason Univ. Fairfax VA 22030-4444 United States

A simple CFD tool, coupled to a discrete surface representation and a gradient based optimization procedure, is applied to the design of optimal hull forms and optimal arrangement of hulls for a wave cancellation multihull ship. The CFD tool, which is used to estimate the wave drag, is based on the zeroth order slender ship approximation. The hu ll surface is represented by a triangulation, and almost every grid point on the surface can be used as a design variable. A smooth surface is obtained via a si mplified pseudo shell problem. The optimal design process consists of two steps . The optimal center and outer hull forms are determined independently in the fi rst step, where each hull forms are determined independently in the first step, where each hull keeps the same displacement as the original design while the wav e drag is minimized. The optimal outer hull arrangement is determined in the se cond step for the optimal center and outer hull forms obtained in the first step . Results indicate that the new design can achieve a large wave drag reduction i n comparison to the original design configuration.

关键词： hull form design hull form optimiza tion wave cancellation multihull ship trimaran wave resistance CFD tools sl ender ship approximation surface parameterization.