检索结果-南通市图书馆

evaluating the risk of adverse events with interventional endoscopic retrograde cholangiopancreatography and endoscopic ultrasound procedures in cirrhotic patients

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal endoscopy 2019年第11期11卷 523-530页

作者： timothy Yoo Raisa epistola Jordan epistola Lawrence ku Michael W Fleischman Sofiya Reicher Viktor e eysselein Linda A Hou Department of Internal Medicine Harbor-UCLA Medical CenterTorranceCA 90509United States Department of Psychology SocialDecisionand Organizational Sciences ProgramUniversity of MarylandCollege ParkMD 20742United States Department of Internal Medicine Division of GastroenterologyHarbor-UCLA Medical CenterTorranceCA 90509United States

BACkGROUND Hepatic cirrhosis is associated with greater adverse event rates following surgical procedures and is thought to have a higher risk of complications with interventional procedures in ***,these same patients often require interventional gastrointestinal procedures such as endoscopic retrograde cholangiopancreatography(eRCP)and endoscopic ultrasound(eUS).While studies examining this scenario exist,the overall body of evidence for adverse event rates associated with eRCP/eUS procedures is more *** sought add to the literature by examining the incidence of adverse events after eRCP/eUS procedures in our safety-net hospital population with the hypothesis that severity of cirrhosis correlates with higher adverse event *** To examine whether increasing severity of cirrhosis is associated with greater incidence of adverse events after interventional eRCP/eUS *** We performed a retrospective study of patients diagnosed with hepatic cirrhosis who underwent eRCP and/or eUS-guided fine needle aspirations/fine needle biopsies from January 1,2016 to March 14,2019 at our safety net *** recorded Child-Pugh and Model for end-stage Liver Disease(MeLD-Na)scores at time of procedure,interventions completed,and 30-day post-procedural adverse *** analyses were done to assess whether Child-Pugh class and MeLD-Na score were associated with greater adverse event rates and whether advanced techniques(single-operator cholangioscopy,electrohydraulic lithotripsy/laser lithotripsy,or needle-knife techniques)were associated with higher complication *** 77 procedures performed on 36 patients were *** study population consisted primarily of middle-aged Hispanic males.30-d procedure-related adverse events included gastrointestinal bleeding(7.8%),infection(6.5%),and bile leak(2%).The effect of Child-Pugh class C vs class A and B significantly predicted adverse events(β=0.55,PeLD-Na scores also signifi

关键词： endoscopic retrograde cholangiopancreatography endoscopic ultrasound Fine-needle aspiration Fine-needle biopsy Hepatic cirrhosis Model for end-stage Liver Disease Child-Pugh Class Adverse events

The effects of Surface Water Velocity on Hyporheic Interchange

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 Water Resource and Protection 2014年第4期6卷 327-336页

作者： timothy Sickbert eric W. Peterson 1School of Geology Noble Research Center Oklahoma State University Stillwater USA 2Department of Geography-Geology Illinois State University Normal USA Department of Geography-Geology Illinois State University Normal USA

When evaluating hyporheic exchange in a flowing stream, it is inappropriate to directly compare stream stage with subsurface hydraulic head (h) to determine direction and magnitude of the gradient between the stream and the subsurface. In the case of moving water, it is invalid to ignore velocity and to assume that stage equals the net downward pressure on the streambed.? The Bernoulli equation describes the distribution of energy within flowing fluids and implies that net pressure decreases as a function of velocity, i.e., the Venturi effect, which sufficiently reduces the pressure on the streambed to create the appearance of a downward gradient when in fact the gradient may be upward with stream flow drawing water from the subsurface to the surface. A field study correlating the difference between subsurface head and stream stage in a low-gradient stream indicates that the effect is present and significant: shallow subsurface head increases less quickly than stage while deeper subsurface head increases more quickly. These results can substantially improve conceptual models and simulations of hyporheic flow.

关键词： Hyporheic Zone Bernoulli equation Venturi effect Geomorphology Fluvial Groundwater/Surface Water Interaction Streamflow

Nutrient Composition of Cereal （Maize）, Legume （Soybean） and Fruit （Banana） as a Complementary Food for Older Infants and Their Sensory Assessment

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 Food Science and engineering 2016年第3期6卷 139-148页

作者： Chike timothy ezeokeke Anita Blessing Onuoha Department of Nutrition and Dietetics lmo State University Owerri 01-40001 Nigeria

Four complementary foods were prepared from local foodstuffs which are maize （Zea mays）, soyabean （Glycine max） and banana （Musa acuminate colla）. Four complementary samples were produced from the proportion of maize/soyabean/banana composite flours as 60%： 30%： 10% （B）, 60%： 25%： 15% （C）, 60%： 20%： 20% （D）, 50%： 30%： 20% （e） and Nestle Cerelac was the control sample （A）. The formulated diets were subjected to nutritional analysis-along with a commonly used proprietary infant cereal （Nestle Cerelac） as control. Standard chemical methods were used to determine the proximate nutrient composition, some micronutrients and anti-nutritional factors. The samples produced have increased nutrients of fibre that enhances digestibility （2.07%-3.11%）, protein and ash contents. The supplementation of up to 20% soybean flour and banana flour recorded the best results in terms of proximate and mineral compositions and compared favourably with the control sample, in terms of sensory evaluation using hedonic method, sample A was most accepted but did not differ significantly from sample D. Therefore, nutritious and acceptable complementary food can be produced from fermented maize, soybean and banana flours. Results of molar ratios of some minerals and anti-nutritional factors in the compounded diets suggest that the anti-nutrients will not pose any serious problem in the usage of the complementary diets. The cost of producing the formulated diets is about N50-N100 （50 cents） per gram cheaper than cerelac. The study has therefore, revealed that with proper selection of local foodstuff, it is possible to prepare nutritious complementary diets that would be acceptable, readily available, affordable and nutritionally adequate.

关键词： Complementary food blends maize and soybean.

Root-Specific Transcript Profiling of Contrasting Rice Genotypes in Response to Salinity Stress

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Molecular Plant 2011年第1期4卷 25-41页

作者： Olivier Cotsaftis Darren Plett Alexander A.T. Johnson Harkamal Walia Clyde Wilson Abdelbagi M. Ismail timothy J. Close Mark Tester Ute Baumann Australian Centre for Plant Functional Genomics Private Mail Bag 1 Glen Osmond SA 5064 Australia Present address: School of Botany University of Melbourne Parkville Vic 3010 Australia Department of Botany and Plant Sciences University of California Riverside CA 92521 USA Present address: Department of Agronomy and Horticulture University of Nebraska Lincoln NE 68588 USA United States Department of Agriculture Agricultural Research Service George E. Brown Jr Salinity Laboratory Riverside CA 92507 USA International Rice Research Institute Manila The Philippines

elevated salinity imposes osmotic and ion toxicity stresses on living cells and requires a multitude of responses in order to enable plant survival. Building on earlier work profiling transcript levels in rice （Oryza sativa） shoots of FL478, a salt-tolerant indica recombinant inbred line, and IR29, a salt-sensitive cultivar, transcript levels were compared in roots of these two accessions as well as in the roots of two additional salt-tolerant indica genotypes, the landrace Pokkali and the recombinant inbred line IR63731. The aim of this study was to compare transcripts in the sensitive and the tolerant lines in order to identify genes likely to be involved in plant salinity tolerance, rather than in responses to salinity perse. Transcript profiles of several gene families with known links to salinity tolerance are described （e.g. HkTs, NHXs）. The putative function of a set of genes identified through their salt responsiveness, transcript levels, and/or chro- mosomal location （i.e. underneath QTLs for salinity tolerance） is also discussed. Finally, the parental origin of the Saltol region in FL478 is further investigated. Overall, the dataset presented appears to be robust and it seems likely that this system could provide a reliable strategy for the discovery of novel genes involved in salinity tolerance.

关键词： Rice root salinity tolerance microarray HkT Saltol.

Local hardening and asymmetric twin growth by twin-twin interactions in a Mg alloy

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 Magnesium and Alloys 2023年第1期11卷 176-191页

作者： krishna Yaddanapudi Mariyappan Arul kumar Jiaxiang Wang Xin Wang timothy J.Rupert enrique J.Lavernia Julie M.Schoenung Irene J.Beyerlein Subhash Mahajan Department of Materials Science and engineering University of CaliforniaDavisCA 95616USA Materials Science and Technology Division Los Alamos National LaboratoryLos AlamosNM 87545USA Department of Mechanical engineering Materials DepartmentUniversity of CaliforniaSanta BarbaraCA 93106USA Department of Materials Science and engineering University of CaliforniaIrvineUSA Materials Department University of CaliforniaSanta BarbaraCA 93106USA

In this study,the role of twin-twin interactions on the distributions of local defects(e.g.,dislocations)and stress fields in a magnesium alloy is investigated.A co-zone(1012)-(1012)tensile twin junction in a deformed Mg-3wt.%Y alloy is analyzed using transmission electron microscopy(TeM).The results show that the morphology of the impinging(1012)twin is asymmetric,and the non-interacting boundary of the recipient(1012)twin is *** analysis of TeM images reveals that type-II pyramidal[1213](1212)dislocations concentrate in the vicinity of the twin-twin junction *** samedislocations are also observed inside the interacting twin domains along with a few ***dislocations emanating from the impinging(1012)twin boundary have edge character and are extended with faults parallel to the basal *** contrast,thedislocations connected to the recipient(1012)twin are predominantly screw orientation and ***-viscoplastic fast Fourier transform based crystal plasticity calculations are performed to rationalize the observed twin morphology and local dislocation *** model calculations suggest that the local stress fields generated at the junction site where the two twins meet are responsible for the experimentally observed concentration of*** calculated stress fields are asymmetric with respect to the junction site,explaining the observed asymmetric morphology of the impinging ***,these findings show strong effects of twin-twin interactions on the distribution of dislocations as well as the evolution of the twinned microstructure and as such,can help advance understanding of twinning in Mg alloys and their effect on mechanical behavior.

关键词： Tensile twins Twin-twin intersections Mg alloys Crystal plasticity TeM

Attribution of PM_(2.5) exposure in Beijing-Tianjin-Hebei region to emissions:implication to control strategies

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Science Bulletin 2017年第13期62卷 957-964页

作者： Xin Li Qiang Zhang Yang Zhang Lin Zhang Yuxuan Wang Qianqian Zhang Meng Li Yixuan Zheng Guannan Geng timothy J.Wallington Weijian Han Wei Shen kebin He Ministry of education key Laboratory for earth System Modeling Department of Earth System ScienceTsinghua University Department of Marine Earthand Atmospheric SciencesNorth Carolina State University Collaborative Innovation Center for Regional environmental Quality Laboratory for Climate and Ocean-Atmosphere Sciences Department of Atmospheric and Oceanic SciencesSchool of PhysicsPeking University Department of Marine Sciences Texas A&M University at Galveston Department of Atmospheric Sciences Texas A&M UniversityCollege Station National Satellite Meteorological Center China Meteorological Administration Research and Advanced engineering Ford Motor Company Asia Pacific Research Ford Motor Company State key Joint Laboratory of environment Simulation and Pollution Control School of EnvironmentTsinghua University

The Beijing-Tianjin-Hebei （BTH） region is one of the most heavily polluted regions in China, with both high PM2.5 concentrations and a high population density. A quantitative source-receptor relationship can provide valuable insights that can inform effective emission control strategies. Both source appor- tionment （SA） and source sensitivity （SS） can provide such information from different perspectives. In this study, both methods are applied in northern China to identify the most significant emission cate- gories and source regions for PMz5 exposure in BTH in 2013. Despite their differences, both models show similar distribution patterns for population and simulated PM2.5 concentrations, resulting in overall high PM2.5 exposure values （approximately 110 Ixg/m3） and particularly high exposure values during the win- ter （approximately 200 ktg/m3）. Both methods show that local emissions play a dominant role （70%）, with some contribution from surrounding provinces （e.g., Shandong） via regional transport. The two methods also agree on the priority of local emission controls： both identify industrial, residential, and agricultural emissions as the top three categories that should be controlled locally. In addition, the effect of control- ling agricultural ammonia emissions is approximately doubled when the co-benefits of reducing nitrate are considered. The synthesis of SA and SS for addressing specific categories of emissions provides a quantitative basis for the development of emission control strategies and policies for controlling PM2.5 in China.

关键词： PM2.5 exposureSource apportionmentSource sensitivityControl priorityChina

Spatial analysis of bacteria in brackish lake sediment

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

International Journal of Sediment Research 2020年第3期35卷 227-236页

作者： Jean-Sebastien Beaulne Samir R.Mishra Mrutyunjay Suar Ananta Narayan Panda Gurdeep Rastogi Ajit kumar Pattnaik Vishakha Raina timothy M.Vogel environmental Microbial Genomics Ecole Centrale de LyonUniversite de Lyon ISARA Department of Agroecology and Environment environmental Biotechnology Laboratory School of BiotechnologyKIIT University Wetland Research and Training Center Chilika Development AuthorityDepartment of Forest and EnvironmentGovernment of Odisha

The spatial distribution of bacterial communities inhabiting sediment is heterogeneous at different spatial scales,but mostly ***,it is postulated that the heterogeneity of the bacterial community composition varies at the same scale of the heterogeneity of sediment chemical *** large spatial scale(km) diversity in sediment from a brackish water lagoon(Chilika Lake,India) is studied,considering the large scale physical and chemical characteristics of land cover,climate,pH,and ***-two samples(24 stations,3 seasons:winter,rainy,and summer) of sediment from Chilika Lake were analyzed by 16 S ribosomal ribonucleic acid(rRNA) gene sequencing,and the relations with land cover and other physico-chemical paramete rs are *** re samples were collected after a severe cyclonic storm(Phailin) passed near the lagoon in 2013,to see the impact of the tropical storm on the spatial and tempo ral distribution of bacteria in the *** results demonstrate clear spatial relations between physico-chemical parameters(e.g.,salinity),land surfaces(e.g.,drainage area),and the distribution of sediment microbial communities.

关键词： Salinity 16S rRNA Macro-scale Sediment GIS

evaluation of the Precision Agricultural Landscape Modeling System (PALMS) in the Semiarid Texas Southern High Plains

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Soil Science 2013年第4期3卷 169-181页

作者： John R. Nelson Robert J. Lascano Jon D. Booker Richard e. Zartman timothy S. Goebel Department of Agronomy Kansas State University Courtland Kansas USA Department of Plant and Soil Sciences Texas Tech University Lubbock Texas USA. USDA-ARS Cropping Systems Research Laboratory Wind Erosion and Water Conservation Research Unit Lubbock Texas USA

Accurate models to simulate the soil water balance in semiarid cropping systems are needed to evaluate management practices for soil and water conservation in both irrigated and dryland production systems. The objective of this study was to evaluate the application of the Precision Agricultural Landscape Modeling System (PALMS) model to simulate soil water content throughout the growing season for several years and for three major soil series of the semiarid Texas Southern High Plains (SHP). Accuracy of the model was evaluated by comparing measured and calculated values of soil water content and using root mean squared difference (RMSD), squared bias (SB), squared difference between standard deviations (SDSD), and lack of correlation weighted by the standard deviation (LCS). Different versions of the model were obtained by modifying soil hydraulic properties, including saturated hydraulic conductivity (ks) and residual (θr) and saturated (θs) soil volumetric water content, which were calculated using Rosetta pedotransfer functions. These modifications were combined with updated routines of the soil water solver in PALMS to account for rapid infiltration into dry soils that often occur in the SHP. Field studies were conducted across a wide range of soil and water conditions in the SHP. Soil water content was measured by neutron attenuation and gravimetrically throughout the growing seasons at each location to compare absolute values and the spatial distribution of soil water with PALMS calculated values. Use of Rosetta calculated soil hydraulic properties improved PALMS soil water calculation from 1% - 13% of measured soil volumetric water content (θv) depending on soil type. Large-scale models such as PALMS have the potential to more realistically represent management effects on soil water availability in agricultural fields. Improvements in PALMS soil water calculations indicated that the model may be useful to assess long-term implications of management practices

关键词： Model Validation Landscape Scale Hydrology Soil Water Content Cropping Systems

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

体育运动中的体位放松技术

体育运动中的体位放松技术