检索结果-南通市图书馆

Peripartal rumen-protected methionine supplementation to higher energy diets elicits positive effects on blood neutrophil gene networks, performance and liver lipid content in dairy cows

引用

journal of Animal Science and Biotechnology 2016年第3期7卷 391-402页

作者： Cong Li Fernanda Batistel johan Samir Osorio james K.Drackley Daniel Luchini juan j.Loor Key Laboratory of Animal Genetics and Breeding of Ministry of Agriculture National Engineering Laboratory of Animal BreedingCollege of Animal Science and TechnologyChina Agricultural University Department of Animal Sciences and Division of Nutritional Sciences University of Illinois Department of Animal and Rangeland Sciences Oregon State University Ruminant Technical Services ADISSEO NA

Background： Main objectives were to determine to what extent Smartamine M（SM） supplementation to a prepartal higher-energy diet could alter neutrophil（PMN） and liver tissue immunometabolic biomarkers, and whether those responses were comparable to those in cows fed a prepartal lower-energy diet（CON）.Results： Twenty-eight multiparous Holstein cows were fed CON（NEL= 1.24 Mcal/kg DM） during d-50 to d-22 relative to calving. From d-21 to calving, cows were randomly assigned to a higher-energy diet（OVE, n = 9; NEL= 1.54 Mcal/kg DM）, OVE plus SM（OVE ＋ SM, n = 10; SM = 0.07 % of DM） or remained on CON（n = 9）. Al cows received the same basal lactation diet（NEL= 1.75 Mcal/kg DM）. Supplementation of SM（OVE ＋ SM） continued until 30 d postpartum. Liver biopsies were harvested at d-10, 7, and 21 relative to parturition. Blood PMN isolated at-10, 3, and 21 d relative to calving was used to evaluate gene expression. As expected, OVE increased liver lipid content postpartum; however,cows fed OVE ＋ SM or CON had lower concentrations than OVE. Compared with OVE, cows in CON and OVE ＋ SM had greater DMI postpartum and milk production. Furthermore, cows fed OVE ＋ SM had the greatest milk protein and fat percentage and lowest milk SCC despite having intermediate PMN phagocytic capacity. Adaptations in PMN gene expression in OVE ＋ SM cows associated with the lower SCC were gradual increases from-10 to 21 d in genes that facilitate migration into inflammatory sites（SELL, ITGAM）, enzymes essential for reducing reactive oxygen metabolites（SOD1, SOD2）, and a transcription factor（s） required for controlling PMN development（RXRA）. The greater expression of TLR4 on d 3, key for activation of innate immunity due to inflammation, in OVE compared with CON cows suggests a more pronounced inflammatory state. Feeding OVE ＋ SM dampened the upregulation of TLR4, despite the fact that these cows had similar expression of the pro-inflammatory genes NFKB1 and TNF as OVE. Cows in CON had lower overall expr

关键词： Blood neutrophil Gene expression Methionine

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

Influence of Collective Boulder Array on the Surrounding Time-averaged and Turbulent Flow Fields

引用

journal of Mountain Science 2014年第6期11卷 1420-1428页

作者： Achilleas G.TSAKIRIS A.N.Thanos PAPANICOLAOU Seyed M.HAjIMIRZAIE james H.j.BUCHHOLZ IIHR-Hydroscience &Engineering The University of Iowa Iowa City IA 52246-1585 USA Department of Civil and Environmental Engineering The University of Tennessee at Knoxville 412 John D. Tickle Building Knoxville TN37996 USA South Florida WaterManagementDistrict WestPalm Beach FL 33416 USA

Arrays of large immobile boulders,which are often encountered in steep mountain streams,affect the timing and magnitude of sediment transport events through their interactions with the approach *** their importance in the quantification of the bedload rate,the collective influence of a boulder array on the approach timeaveraged and turbulent flow field has to date been *** overarching objective is,thus,to assess the collective effects of a boulder array on the time-averaged and turbulent flow fields surrounding an individual boulder within the array,placing particular emphasis on highlighting the bed shear stress spatial *** objective of this study is pursued by resolving and comparing the timeaveraged and turbulent flow fields developing around a boulder,with and without an array of isolated boulders being *** results show that the effects of an individual boulder on the time-averaged streamwise velocity and turbulence intensity were limited to the boulder's immediate vicinity in the streamwise(x/d c < 2-3) and vertical(z/d c < 1) *** of the boulder's immediate vicinity,the time-averaged streamwise velocity was found to be globally *** global deceleration was attributed to the form drag generated collectively by the boulder *** importantly,the boulder array reduced the applied shear stress exerted on theindividual boulders found within the array,by absorbing a portion of the total applied ***,the array was found to have a "homogenizing" effect on the near-bed turbulence thus significantly reducing the turbulence intensity in the near-bed *** findings of this study suggest that the collective boulder array bears a portion of the total applied bed shear stress as form drag,hence reducing the available bed shear stress for transporting incoming mobile ***,the effects of the boulder array should not be ignored in sediment transport *** effects are enc

关键词： Boulder array Form drag Bed shear stress Time-averaged velocity Turbulence intensity

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

Importance of bifurcation angle in bifurcation stenting

引用

Chinese Medical journal 2012年第22期125卷 4122-4125页

作者： Dobrin Vassilev Alexander Alexandrov Dan Le Katrina Nguyen james Nguyen Hung Phan Robert j. Gil Cardiac Catheterization Laboratory National Heart HospitalSofiaBulgaria"Medikacor"Heart HospitalRuseBulgaria Cardiac Catheterization Laboratory National Heart HospitalSofiaBulgaria Heart Failure Program the University of Alabama in Birmingham(UAB)BirminghamAlabamaUSA University of California at San Diego San DiegoCaliforniaUSA The University of Arizona Medical Center TucsonArizonaUSA Department of Medicine Weiss Memorial HospitalChicago IllinoisUSA Central Clinical Hospital of the Internal Affairs and Administration Ministry WarsawPolandInstitute of Experimental and Practical MedicinePolish Academy of ScienceWarsawPoland

Bifurcation coronary lesions are relatively frequent in today＇s interventional cardiology practice, averaging between 10%-15% of all interventions （PCIs）. Several percutaneous coronary problems inherent in the treatment of bifurcation lesions are periprocedural side branch （SB） compromise （composite of SB closure or appearance of significant ostial stenosis after main vessel （MV） stenting causing ischemia） frequently related to periprocedural myonecrosis,

关键词： bifurcation angle stenting

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

Indications and surgical options for small bowel, large bowel and perianal Crohn's disease

引用

World journal of Gastroenterology 2016年第40期22卷 8892-8904页

作者： james WT Toh Peter Stewart Matthew jFX Rickard Rupert Leong Nelson Wang Christopher j Young Department of Colorectal Surgery Concord Repatriation General Hospital South Western Sydney Clinical School University of New South Wales Liverpool Hospital School of Medicine Western Sydney University Liverpool Hospital Ingham Institute of Applied Research Liverpool Hospital Discipline of Surgery Sydney Medical School the University of Sydney Department of Gastroenterology Concord Repatriation General Hospital Department of Colorectal Surgery Royal Prince Alfred Hospital

Despite advancements in medical therapy of Crohn's disease(CD), majority of patients with CD will eventually require surgical intervention, with at least a third of patients requiring multiple surgeries. It is important to understand the role and timing of surgery, with the goals of therapy to reduce the need for surgery without increasing the odds of emergency surgery and its associated morbidity, as well as to limit surgical recurrence and avoid intestinal failure. The profile of CD patients requiring surgical intervention has changed over the decades with improvements in medical therapy with immunomodulators and biological agents. The most common indication for surgery is obstruction from stricturing disease, followed by abscesses and fistulae. The risk of gastrointestinal bleeding in CD is high but the likelihood of needing surgery for bleeding is low. Most major gastrointestinal bleeding episodes resolve spontaneously, albeit the risk of re-bleeding is high. The risk of colorectal cancer associated with CD is low. While current surgical guidelines recommend a total proctocolectomy for colorectal cancer associated with CD, subtotal colectomy or segmental colectomy with endoscopic surveillance may be a reasonable option. Approximately 20%-40% of CD patients will need perianal surgery during their lifetime. This review assesses the practice parameters and guidelines in the surgical management of CD, with a focus on the indications for surgery in CD(and when not to operate), and a critical evaluation of the timing and surgical options available to improve outcomes and reduce recurrence rates.

关键词： Surgery Crohn’s disease Major abdominal surgery Perianal Inflammatory bowel disease Colon cancer

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

Black,pinto and white beans lower hepatic lipids in hamsters fed high fat diets by excretion of bile acids

引用

食物生产加工与营养(英文) 2020年第1期2卷 249-257页

作者： Priscila L.S.Alves jose De j Berrios james Pan Wallace H.Yokoyama Agricultural Research Service United States Department of AgricultureHealthy Processed Foods ResearchWestern Regional Research Center800 Buchanan St.AlbanyCA 94710USA

Hypolipidemic and anti-obesity properties of extruded black,pinto and white beans were examined in male Syrian hamsters fed high fat diets for 3 *** efficiency and effectiveness of extruder processing to eliminate heatlabile antinutrients were also *** fed a high fat diet containing 40%extruded black beans gained the same amount of weight as animals on a low-fat chow diet(based on AIN-93G).Total plasma cholesterol of the hamsters fed bean flour-based diets tended to be lower,ranging between 298 and 356 mg/dL,compared to 365 mg/dL for the control group and total and free liver cholesterol was about 50 and 33%lower,respectively,in the livers(freeze-dried)of hamsters fed the black turtle bean(BB)and pinto bean(PB)*** nitrogen content of the feces from hamsters fed the PB and white bean(WB)diets were 2.6x higher than the control and the excretion of deoxycholic acid(DCA)and lithocholic acid(LCA)was higher in all legume fed hamsters The results show that extrusion efficiently and economically reduces anti-nutritive factors that inhibit the digestion and absorption of proteins and carbohydrates.

关键词： Beans Extrusion Anti-obesity Bile acid Mice

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

Biochars reduce irrigation water sodium adsorption ratio

引用

Biochar 2021年第1期3卷 77-87页

作者： Saima Awan james A.Ippolito j.L.Ullman Kamran Ansari Liqiang Cui A.A.Siyal US‑Pakistan Center for Advanced Studies in Water Mehran University of Engineering and Technology JamshoroSindh 76090Pakistan Department of Soil and Crop Sciences Colorado State UniversityFort Collins 80523USA Department of Civil and Environmental Engineering University of UtahSalt Lake City 84112USA School of Environmental Science and Engineering Yancheng Institute of TechnologyNo.211 of Jianjun RoadYancheng 224051China

Irrigation water quality plays a vital role in sustaining crop productivity and feeding a growing world *** many countries,continued agricultural water reuse can lead to greater water-soluble salt concentrations,and in particular Na;finding means by which irrigation water Na,and thus sodium adsorption ratios(SAR),can be reduced would reduce the rate at which soil sodification *** biochars,containing a variety of organic functional groups and electrochemistries,were examined for their potential to sorb and remove Na from simulated irrigation water,and subsequently reduce water *** batch experiments examined the role that wheat straw biochar,lodgepole pine biochar,Kentucky bluegrass biochar,and hemp biochar played in terms of sorbing sodium over time or application *** the four biochars examined,hemp biochar had the lowest oxidation-reduction potential(ORP;~0-100 mV),sorbed the greatest Na amount(up to 923 mg kg^(−1)),and released Ca and Mg(up to 115 and 63 mg kg^(−1),respectively)into solution,all of which led to a significant reduction in water SAR(from 8.8 to 7.3;17% decrease).Sodium sorption onto hemp biochar better fit a Langmuir versus a Freundlich isotherm,yet followed a pseudo-second-order model better than a pseudo-first-order kinetic *** data suggest that Na ions formed a monolayer on the hemp biochar surface,influenced by associations withπelectrons,but given time the Na ions may diffuse into biochar pores or more slowly interact with biochar-borneπ*** biochar shows promise in reducing the SAR of Na-impacted *** investigations should focus on additional laboratory,greenhouse,and field trials with hemp biochar and other biochars designed to have similar or superior properties for sorbing excess irrigation water Na and improving crop growth.

关键词： Biochar Na-containing irrigation water Oxidation-reduction potential Sodium sorption πElectrons

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

单壁碳纳米管作支撑的杂化金纳米催化剂比TiO_2和炭黑具有更优氧化芳香醇的性能（英文）

引用

新型炭材料 2017年第3期32卷 242-251,289,290,291,292,293,294,295,296,297,298,299,300,301,302,303,304,305,306页

作者： Anne E Shanahan Mary McNamara james A Sullivan Hugh j Byrne FOCAS Research Institute Dublin Institute of TechnologyCamden RowDublin 8Republic of Ireland UCD School of Chemistry and Chemical Biology BelfieldDublin4Republic of Ireland

采用原位还原技术制备出以单壁碳纳米管、炭黑(P90)和TiO_2为支撑的3种金纳米复合材料,并通过多种表征手段来探讨物理性能。再将他们作为1-苯基乙醇、2-苯基乙醇和苯甲醇的绿色需氧氧化杂化催化剂来测试稳定性。在所有反应中,与P90和Ti... 详细信息

采用原位还原技术制备出以单壁碳纳米管、炭黑(P90)和TiO_2为支撑的3种金纳米复合材料,并通过多种表征手段来探讨物理性能。再将他们作为1-苯基乙醇、2-苯基乙醇和苯甲醇的绿色需氧氧化杂化催化剂来测试稳定性。在所有反应中,与P90和TiO_2相比,以单壁碳纳米管作支撑的金纳米杂化催化剂呈现出最优的反应效率和特异性。这些金纳米杂化催化剂经多次反应循环后反应活性衰减很小,从而能被重复使用。同时探讨了金纳米杂化催化剂活性高的原因,包括颗粒形貌、尺寸和支撑体性能。可以推断,基底上功能团迁移的位置、支撑材料的性质和活性金纳米颗粒相的颗粒尺寸分布均有助于使这些催化剂在反应中显示出高的选择性。

关键词：芳香的醇金纳米催化剂选择性

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

Sports compression garments improve resting markers of venous return and muscle blood flow in male basketball players

引用

journal of Sport and Health Science 2023年第4期12卷 513-522页

作者： Shane F.O'Riordan Rod McGregor Shona L.Halson David j.Bishop james R.Broatch Institute for Health and Sport(iHeS) Victoria UniversityFootscrayVIC 3011Australia Department of Physiology Australian Institute of SportBruceACT 2617Australia Faculty of Health University of CanberraBruceACT 2617Australia School of Behavioural and Health Sciences Australian Catholic UniversityBanyoQLD 4014Australia

Background:The benefits associated with sports compression garments are thought to be closely related to enhanced blood ***,findings are equivocal,possibly due to heterogeneity in the techniques used for measuring blood flow,the garment types used,and the pressures *** study combined Doppler ultrasound and near-infrared spectroscopy technologies to provide the first comprehensive assessment of the effects of 3 sports compression garment types on markers of venous return and muscle blood flow at ***:Resting lower-limb blood flow measures(markers of venous return,muscle blood flow,and muscle oxygenation)of 22 elite,junior,male basketball players(age=17.2±0.9 years,mean±SD)were assessed in 4 separate conditions:no compression(CON),compression tights(TIGHTS),compression shorts(SHORTS),and compression socks(SOCKS).Markers of venous return(cross-sectional area,time-averaged mean and peak blood flow velocity,and venous blood flow)were measured via Doppler ultrasound at the popliteal and common femoral *** blood flow and muscle oxygenation were measured in the gastrocnemius medialis and vastus lateralis using near-infrared ***:Popliteal markers of venous return were higher in TIGHTS compared to CON(p<0.01)and SHORTS(p<0.01),with SOCKS values higher compared with CON(p<0.05).Common femoral vein markers of venous return were higher for all conditions compared to CON(p<0.05),with TIGHTS values also higher compared to SOCKS(p<0.05).Gastrocnemius medialis blood flow was higher for TIGHTS compared to CON(p=0.000),SOCKS(p=0.012),and SHORTS(p=0.000),with SOCKS higher compared to SHORTS(p=0.046).Vastus lateralis blood flow was higher for TIGHTS compared to CON(p=0.028)and SOCKS(p=0.019),with SHORTS also higher compared to CON(p=0.012)and SOCKS(p=0.005).Gastrocnemius medialis oxygenation was higher for TIGHTS compared to CON(p=0.003),SOCKS(p=0.033),and SHORTS(p=0.003),with SOCKS higher compared to CON(p=0.044)and SHORTS(p=0.032).Va

关键词： Arterial perfusion Lower-limb compression Pressure Venous flow

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

Ultrastructure of the gastro intestinal tract of healthy japanese quail(Coturnix japonica) using light and scanning electron microscopy

引用

Animal Nutrition 2018年第4期4卷 378-387页

作者： Ngare Wilkinson Ivan Dinev William j.Aspden Robert j.Hughes Ingrid Christiansen james Chapman Sheeana Gangadoo Robert j.Moore Dragana Stanley Central Queensland University Institute for Future Farming Systems Poultry Cooperative Research Centre University of New England Armidale Faculty of Veterinary Medicine Trakia University South Australian Research and Development Institute Pig and Poultry Production Institute School of Animal and Veterinary Sciences University of Adelaide School of Science RMIT University Department of Microbiology Monash University

The japanese quail(Coturnix japonica) are popular both as an alternative protein source and as a model of choice for scientific research in several disciplines. There is limited published information on the histological features of the intestinal tract of japanese quail. The only comprehensive reference is a book published in 1969. This study aims to fill that niche by providing a reference of general histological features of the japanese quail, covering all the main sections of the intestinal tract. Both light and scanning electron microscope(SEM) images are presented. Results showed that the japanese quail intestinal tract is very similar to that of the chicken with the exception of the luminal koilin membrane of the gizzard. Scanning electron microscopic photomicrographs show that in the japanese quail koilin vertical rods are tightly packed together in a uniform manner making a carpet-like appearance. This differs in chicken where the conformations of vertical rods are arranged in clusters.

关键词： japanese quail Coturnix japonica Histology Microscopy Scanning electron microscopy Gastrointestinal tract

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

Bemisia tabaci （Hemiptera： Aleyrodidae） nymphal feeding in cotton （Gossypium hirsutum） leaves

引用

Insect Science 2007年第5期14卷 375-381页

作者： CHANG-CHI CHU DENNIS A. MARGOSAN james S. BUCKNER THOMAS P. FREEMAN THOMAS j. HENNEBERRY USDA ARS US Arid Land Agricultural Research Center Maricopa Arizona USDA ARS San Joaquin Valley Agricultural Science Center Parlier California Biosciences Research Laboratory Fargo North Dakota Electron Microscopy Center North Dakota State University Fargo North Dakota USA

We used brightfield electron microscopy （BEM）, differential interference contrast microscopy （DICM）, scanning electron microscopy （SEM）, transmission electron microscopy （TEM）, and confocal laser scanning microscopy （CLSM） to investigate the stylet pathways of Bemisia tabaci during nymphal feeding behavior in cotton leaves beginning with penetration of the abaxial leaf surface and ending with stylets in sieve tubes in phloem tissues. Most nymphal stylets within salivary sheaths penetrating leaf tissues made complex turns and developed more than one salivary sheath branch before ending in sieve tubes. The external morphology of the salivary sheaths and their routes between and through leaf cells are described during the present study. Results showed the presence of the stylet within the sieve tubes. B. tabaci nymphs may remove stylets and feed in different sieve tubes. Ten short movies showing the progression of the stylet penetrations from adaxial surface to the sieve tubes are attached to Figures 8-15. The report and movies can be viewed from the internet. Download the movies to a local drive in your computer first for fast upload. The movies are posted on the website http：//***/Services/***？docid=14629. The movies can be used as a teaching aid in biology classes.

关键词： Bemisia tabaci microscopy nymphs feeding stylet sheath stylet

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

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：