检索结果-南通市图书馆

Modeling the influence of livestock grazing pressure on grassland bird distributions

Ecological Processes 2020年第1期9卷 488-498页

作者： Rachel R.Fern michael l.morrison William E.Grant Hsiaohsuan Wang Tyler A.Campbell Department of Wildlife and Fisheries Sciences Texas A&M UniversityWFES Building2258 TAMU534 John Kimbrough BlvdCollege StationTX 77843-2258USA East Foundation San AntonioTX 78216USA

Background:The influence of vegetative changes due to livestock grazing on grassland birds is well-recognized because these birds are heavily influenced by vegetative ***,species distribution models(SDMs)use direct variables,resources that the animal consumes or requires to persist in an area(e.g.,water)to define and project a species’niche and *** variables,which are features the animal does not consume or require for persistence but with which it may still interact,are often *** objective was to improve the traditional SDMs projecting the distribution of three summer resident South Texas grassland birds(Northern Bobwhite Colinus virginianus,Eastern Meadowlark Sturnella magna,and Cassin’s Sparrow Peucaea cassinii)by incorporating livestock grazing pressure,an indirect variable,into five SDM algorithms:BioClim,generalized linear model,MaxEnt,boosted regression tree,and random *** collected data from the Coloraditas Grazing Research and Demonstration Area(CGRDA),a 7684-ha area located on the San Antonio Viejo Ranch(SAV)in South *** used several relevant environmental characteristics to build SDMs and compared model performance(AUC and TSS)with and without grazing pressure as an indirect ***:Machine learning models(MaxEnt and random forest)had the highest predictive performance for all species,with random forest being the most consistent for each *** and generalized linear model remained constant or only marginally improved with the addition of the grazing ***:Our findings suggest that model selection for SDM should include consideration of species prevalence,and machine-learning algorithms should be preferred when the target species is of low or unknown ***,livestock grazing has measurable influence on grassland bird species’distributions and should be included in SDMs as an indirect variable in addition to associated vegetative changes.

关键词： Birds Grassland Grazing livestock Species distribution model Texas

来源：

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

Water quality, habitat, and fish assemblage relationships in middle-order agriculture and forest streams of the Mississippi Alluvial Plain

引用

Ecological Processes 2024年第1期13卷 217-236页

作者： Matthew l.Skoog michael A.Eggleton Yushun Chen Department of Aquaculture and Fisheries University of Arkansas at Pine Bluff Minnesota Department of Natural Resources State Key laboratory of Freshwater Ecology and Biotechnology Institute of Hydrobiology Chinese Academy of Sciences University of Chinese Academy of Sciences

Background Agriculture has greatly influenced water quality, habitats, and fish assemblages in streams of the Mississippi Alluvial Plain(MAP) ecoregion. However, MAP streams have historically been understudied compared to streams in other agricultural regions of the USA. In this study, water quality, habitat, and fish assemblage composition were assessed seasonally(spring, summer, and fall) in eight representative MAP streams located across three U.S. states. The study design included four streams containing highly agricultural watersheds(herein termed “agriculture” streams) and four streams containing mostly forested watersheds(herein termed “forest” streams), which were intended to represent reference conditions for MAP *** In general, forest streams contained significantly better instream and riparian habitats than agriculture streams(P = 0.010–0.040) whereas agriculture streams contained significantly greater levels of primary nutrients(P lture and forest streams with respect to other physical and chemical variables were intermittent and season dependent. Fish assemblages in agriculture and forest streams were structured primarily along an environmental gradient reflecting instream habitat conditions, water nutrient concentrations, and benthic chlorophyll-a production. Structurally, fish assemblages in both stream types contained many regionally common species, though some species appeared to exhibit affinities for a particular stream type. Functionally, fish assemblages in agriculture streams contained more tolerant species, more omnivores, and fewer insectivores compared to forest stream assemblages, which were nearly all insectivores. Overall, one-third of the fish specimens collected in forest streams classified as intolerant *** Our results suggested that stream water quality, habitat, and fish assemblages differed between agriculture and forest streams in the MAP, with fish assemblages e

关键词： Agriculture Stream land use Water quality Habitat Fish Multivariate statistics Mississippi Alluvial Plain

来源：

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

Use of donepezil for neurocognitive recovery after brain injury in adult and pediatric populations:a scoping review

引用

Neural Regeneration Research 2024年第8期19卷 1686-1695页

作者： Avery l.Miller Nathan K.Evanson J.michael Taylor University of Cincinnati College of Medicine CincinnatiOHUSA Department of Pediatrics University of CincinnatiCincinnatiOHUSA Department of Neurology and Rehabilitation Medicine University of CincinnatiCincinnatiOHUSA Division of Pediatric Rehabilitation Medicine Cincinnati Children’s Hospital Medical CenterCincinnatiOHUSA Division of Neurology Cincinnati Children’s Hospital Medical CenterCincinnatiOHUSA

There are few pharmacologic options for the treatment of cognitive deficits associated with traumatic brain injury in pediatric *** inhibitors such as donepezil have been evaluated in adult patients after traumatic brain injury,but relatively less is known about the effect in pediatric *** goal of this review is to identify knowledge gaps in the efficacy and safety of acetylcholinesterase inhibito rs as a potential a djuvant treatment fo r neurocognitive decline in pediatric patients with traumatic brain *** queried PubMed to identify literature published from database inception thro ugh June 2023 desc ribing the use of donepezil in young adult traumatic brain injury and pediatric patients with predefined *** on preselected search criteria,340 unique papers we re selected for title and abstra ct ***-two reco rds were reviewed in full after eliminating preclinical studies and pape rs outside the scope of the *** adult traumatic brain injury,we review results from 14 papers detailing 227 subjects where evidence suggests donepezil is well tole rated and shows both objective and patient-reported efficacy for reducing cognitive *** children,3 pape rs report on 5 children recovering from traumatic brain injury,showing limited *** additional 15 pediatric studies conducted in populations at risk for cognitive dysfunction provide a broader look at safety and efficacy in 210 patients in the pediatric age *** its promise for efficacy in adults with traumatic brain injury and tole rability in pediatric patients,we believe further study of donepezil for children and adolescents with traumatic brain injury is warranted.

关键词： acetylcholinesterase inhibitor adult cognition donepezil pediatrics traumatic brain injury

来源：

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

Geometric Programming for Nonlinear Satellite Buffer Networks With Time Delays under l_(1)-Gain Performance

引用

IEEE/CAA Journal of Automatica Sinica 2024年第2期11卷 554-556页

作者： Yukang Cui Yihui Huang michael V.Basin Zongze Wu College of Mechatronics and Control Engineering Shenzhen UniversityShenzhen 518060China Shenzhen University Shenzhen 518060China Peng Cheng laboratory Shenzhen 518060China Robotics Institute Ningbo University of TechnologyNingbo 315211China Autonomous University of Nuevo leon Nuevo Leon 66455Mexico

Dear Editor,This letter concerns the parameter tuning problem for nonlinear satellite buffer networks with communication delays, aiming to optimize their stability properties under l_(1)-gain. We first model the satellite buffer networks by a nonlinear time-delay positive system and propose a novel characterization under which the nonlinear system is asymptotically stable with a prescribed l_(1)-induced performance.

关键词： nonlinear system prescribed

来源：

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

Debris Fan Produced by Failure of Canyon-Blocking Pyroclastic Flows

引用

Journal of Water Resource and Protection 2024年第5期16卷 328-360页

作者： michael l. Cummings Department of Geology Portland State University Portland Oregon USA

Ash-rich pyroclastic flows from the cataclysmic eruption of Mount Mazama (~7700 yr. B. P.), Cascade volcanic arc, Oregon, entered and blocked the narrow, bedrock-lined canyon of the Williamson River approximately 35 to 44 km from the source volcano. The blockage impounded a body of water which then released producing four stratigraphic units in the downstream debris fan. The four stratigraphic units are a boulder core comprised of locally sourced bedrock boulders and three sand-rich units including a fine-grained sand unit, a sandy pumice gravel (±basalt/hydrovolcanic tuff) unit, and a pumice pebble-bearing, crystal-rich sand unit. Hand-drilled auger holes up to ~1.6 m deep were used to obtain samples of the sand-rich units. Units were delimited using surface and down-hole observations, composition and texture, estimated density, statistical parameters of grain size, and vertical and lateral distribution of properties. Overtopping followed by rapid incision into the ash-rich pyroclastic flows progressively cleared the canyon, but a bedrock knickpoint near the head of the canyon limited the volume of debris available for transport to about 0.04 km3 to 0.08 km3. Co-deposition of bedrock boulders and lithic-rich sand was followed by rapid deposition with minimal reworking of remobilized pyroclastics. Continued draining of the impounded lake sent hyperconcentrated flows onto the debris fan depositing pumice-rich gravels that graded upward to crystal-rich sands.

关键词： Outburst Flood Mount Mazama Debris Fan Canyon Blockage Pyroclastic Flows

来源：

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

Injury and illness in short-course triathletes:A systematic review

引用

Journal of Sport and Health Science 2024年第2期13卷 172-185页

作者： Sara A.Guevara Melissa l.Crunkhorn michael Drew Gordon Waddington Julien D.Périard Naroa Etxebarria liam A.Toohey Paula Charlton University of Canberra Research Institute for Sport and Exercise(UCRISE) BruceACT 2617Australia New South Wales Institute of Sport SydneyNSW 2127Australia Queensland Academy of Sport BrisbaneQLD 4111Australia Triathlon Australia Gold CoastQLD 4227Australia Australian Institute of Sport BruceACT 2617Australia

Background:Determining the incidence and prevalence of injury and illness in short-course triathletes would improve understanding of their etiologies and therefore assist in the development and implementation of prevention *** study synthesizes the existing evidence on the incidence and prevalence of injury and illness and summarizes reported injury or illness etiology and risk factors affecting short-course ***:This review followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses *** reporting health problems(injury and illness)in triathletes(all sexes,ages,and experience levels)training and/or competing in short-course distances were *** electronic databases(Cochrane Central Register of Controlled Trials,MEDlINE,Embase,APA PsychINFO,Web of Science Core Collection,and SPORTDiscus)were *** of bias was independently assessed by 2 reviewers using the Newcastle-Ottawa Quality Assessment *** authors independently completed data ***:The search yielded 7998 studies,with 42 studies eligible for ***-three studies investigated injuries,24 studies investigated illnesses,and 5 studies investigated both injuries and *** injury incidence rate ranged 15.7-24.3 per 1000 athlete exposures,and the illness incidence rate ranged 1.8-13.1 per 1000 athlete *** and illness prevalence ranged between 2%-15%and 6%-84%,*** injuries reported occurred during running(45%-92%),and the most frequently reported illnesses affected the gastrointestinal(7%-70%),cardiovascular(14%-59%),and respiratory systems(5%-60%).Conclusion:The most frequently reported health problems in short-course triathletes were:overuse and lower limb injuries associated with running;gastrointestinal illnesses and altered cardiac function,primarily attributable to environmental factors;and respiratory illness mostly caused by infection.

关键词： Athlete illnesses Athletic injuries Epidemiology Triathlon

来源：

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

Disparate outcomes in Hispanic patients with metabolic dysfunctionassociated steatotic liver disease/steatohepatitis and type 2 diabetes: large cohort study

引用

World Journal of Diabetes 2024年第5期15卷 886-897页

作者： Joseph Matthew Gosnell George Golovko Esteban Arroyave Akshata Moghe michael l Kueht Omar AbdulSaldarriaga Kevin H McKinney Heather l Stevenson Monique R Ferguson Department of Pathology University of Texas Medical BranchGalvestonTX 77555United States Department of Pharmacology&Toxicology University of Texas Medical BranchGalvestonTX 77555United States Department of Medicine University of Texas Health Science Center at HoustonHoustonTX 77030United States Department of Surgery University of Texas Medical BranchGalvestonTX 77555United States Center for Tropical Diseases Department of Internal MedicineUniversity of Texas Medical BranchGalvestonTX 77555United States Department of Internal Medicine University of Texas Medical BranchGalvestonTX 77555United States

BACKGROUND Metabolic dysfunction-associated steatotic liver disease(MASlD)and metabolic dysfunction-associated steatohepatitis(MASH)are a growing health burden across a significant portion of the global patient ***,these conditions seem to have disparate rates and outcomes between different ethnic *** combination of MASlD/MASH and type 2 diabetes increases the risk of hepatocellular carcinoma(HCC),and Hispanic patients experience the greatest burden,particularly those in South *** To compare outcomes between Hispanic and non-Hispanic patients in the United States,while further focusing on the Hispanic population within Southeast Texas to determine whether the documented disparity in outcomes is a function of geographical circumstance or if there is a more widespread reason that all clinicians must account for in prognostic *** This cohort analysis was conducted with data obtained from TriNetX,llC(“TriNetX”),a global federated health research network that provides access to deidentified medical records from healthcare organizations *** cohort networks were used:University of Texas Medical Branch(UTMB)hospital and the United States national database collective to determine whether disparities were related to geographic regions,like Southeast *** This study findings revealed Hispanics/latinos have a statistically significant higher occurrence of HCC,type 2 diabetes mellitus,and liver fibrosis/cirrhosis in both the United States and the UTMB Hispanic/latino *** mortality in Hispanics/latinos was lower within the United States group and not statistically elevated in the UTMB *** This would appear to support that Hispanic patients in Southeast Texas are not uniquely affected compared to the national Hispanic population.

关键词： Metabolic dysfunction-associated steatotic liver disease Metabolic dysfunction-associated steatohepatitis Hispanic Diabetes mellitus TriNetX Non-alcoholic fatty liver disease Non-alcoholic steatohepatitis Steatotic liver disease Hepatocellular carcinoma

来源：

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

Exploring the associations between skeletal muscle echogenicity and physical function in aging adults:A systematic review with meta-analyses

引用

Journal of Sport and Health Science 2024年第6期13卷 820-840页

作者： Dustin J.Oranchuk Stephan G.Bodkin Katie l.Boncella michael O.Harris-love Muscle Morphology Mechanicsand Performance LaboratoryDepartment of Physical Medicine and RehabilitationUniversity of Colorado Anschutz Medical CampusAuroraCO 80045USA Department of Physical Therapy

Background:Assessment and quantification of skeletal muscle within the aging population is vital for diagnosis,treatment,and injury/disease *** clinical availability of assessing muscle quality through diagnostic ultrasound presents an opportunity to be utilized as a screening tool for function-limiting ***,relationships between muscle echogenicity and clinical functional assessments require authoritative ***,we aimed to(a)synthesize the literature to assess the relationships between skeletal muscle echogenicity and physical function in older adults(-60 years),(b)perform pooled analyses of relationships between skeletal muscle echogenicity and physical function,and(c)perform sub-analyses to determine between-muscle ***:CINAHl,Embase,MEDlINE,PubMed,and Web of Science databases were systematically searched to identify articles relating skeletal muscle echogenicity to physical function in older ***-of-bias assessments were conducted along with funnel plot ***-analyses with and without sub-analyses for individual muscles were performed utilizing Fisher’s Z transformation for the most common measures of physical ***’s Z was back-transformed to Pearson’s r for ***:Fifty-one articles(n=5095,female=»2759,male=»2301,72.5§5.8 years,mean§SD(1 study did not provide sex descriptors))were extracted for review,with previously unpublished data obtained from the authors of 13 *** rectus femoris(n=34)and isometric knee extension strength(n=22)were the most accessed muscle and physical qualities,*** relationship between quadriceps echogenicity and knee extensor strength was moderate(n=2924,r=-0.36(95%confidence interval:-0.38 to-0.32),pll other meta-analyses(grip strength,walking speed,sit-to-stand,timed up-and-go)resulting in slightly weaker correlations(r:-0.34 to-0.23,all plyses determined minimal differences in predictive ability

关键词： Correlations Echo intensity Elderly Intramuscular fat Strength

来源：

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

Commentary on"Speed and surface steepness affect internal tibial loading during running"

引用

Journal of Sport and Health Science 2024年第1期13卷 125-126页

作者： michael Baggaley Arash Khassetarash Faculty of Kinesiology University of CalgaryCalgaryAB T2N 1N4Canada McCaig Institute for Bone and Joint Health University of CalgaryCalgaryAB T2N 4Z6Canada

It is a pleasure to write a commentary on the work of *** Rice and colleagues,l who have advanced our understanding of how the mechanical loading environment of the tibia changes as a function of running grade and *** is important that we understand how the tibia is loaded during conditions that an individual is likely to encounter when running as it is these internal loads which we believe are responsible for the development of bone-stress injuries.

关键词： loading injuries likely

来源：

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

Evaluation of ruminal methane and ammonia formation and microbiota composition as affected by supplements based on mixtures of tannins and essential oils using Rusitec

引用

Journal of Animal Science and Biotechnology 2024年第4期15卷 1607-1622页

作者： Giulia Foggi Melissa Terranova Matteo Daghio Sergej l.Amelchanka Giuseppe Conte Simon Ineichen Monica Agnolucci Carlo Viti Alberto Mantino Arianna Buccioni michael Kreuzer Marcello Mele Department of Agriculture Food and Environment(DAFE)University of Pisa56124 PisaItaly AgroVet‑Strickhof ETH ZurichLindauSwitzerland Department of Agriculture FoodEnvironment and ForestryUniversity of FlorenceFlorence 50144Italy Centro Di Ricerche Agro‑Ambientali“E.Avanzi” University of PisaPisa 56122Italy School of Agricultural Forest and Food Sciences HAFLBern University of Applied SciencesZollikofenSwitzerland Institute of Agricultural Sciences ETH ZurichLindauSwitzerland

Background Dietary supplements based on tannin extracts or essential oil compounds(EOC)have been repeatedly reported as a promising feeding strategy to reduce the environmental impact of ruminant husbandry.A previous batch culture screening of various supplements identified selected mixtures with an enhanced potential to mitigate ruminal methane and ammonia *** these,Q-2(named after quebracho extract and EOC blend 2,composed of carvacrol,thymol,and eugenol)and C-10(chestnut extract and EOC blend 10,consisting of oregano and thyme essential oils and limonene)have been investigated in detail in the present study with the semi-continuous rumen simulation technique(Rusitec)in three independent *** this purpose,Q-2 and C-10,dosed according to the previous study,were compared with a non-supplemented diet(negative control,NC)and with one supplemented with the commercial EOC-based Agolin^(R) Ruminant(positive control,PC).Results From d 5 to 10 of fermentation incubation liquid was collected and analysed for pH,ammonia,protozoa count,and gas *** residues were collected for the determination of ruminal *** d 10,samples of incubation liquid were also characterised for bacterial,archaeal and fungal communities by high-throughput sequencing of 16S rRNA and 26S ribosomal large subunit gene *** of the duration of the fermentation period,Q-2 and C-10 were similarly efficient as PC in mitigating either ammonia(-37%by Q-2,-34%by PC)or methane formation(-12%by C-10,-12%by PC).The PC was also responsible for lower feed degradability and bacterial and fungal richness,whereas Q-2 and C-10 effects,particularly on microbiome diversities,were limited compared to *** All additives showed the potential to mitigate methane or ammonia formation,or both,in vitro over a period of 10 ***,several differences occurred between PC and Q-2/C-10,indicating different mechanisms of *** pronounced defaunation caused by PC a

关键词： Additive Bacteria Continuous culture Degradability Fermentation Fungi Greenhouse gas In vitro Microbiome Rumen

来源：

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

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：