检索结果-南通市图书馆

Phylogenetic definitions for 25 higher-level clade names of birds

Avian Research 2022年第2期13卷 109-126页

作者： George Sangster Edward L.Braun Ulf S.Johansson.rebecca T.Kimball Gerald Mayr Alexander Suh naturalis Biodiversity Center Darwinweg 2PO Box 95172300RALeidenthe Netherlands Department of Biology University of FloridaGainesvilleFL32607USA Department of Zoology Swedish Museum of Natural HistoryP.O.Box 50007SE–10405StockholmSweden Senckenberg Research Institute and natural History Museum Frankfurt Ornithological SectionSenckenberganlage 2560325Frankfurt am MainGermany School of Biological Sciences University of East AngliaNorwichNR47TUUK

Knowledge of the higher-level phylogenetic relationships of birds has grown substantially during the past two decades due to the application of genomic ***,the nomenclature of higher-level taxa has not become more stable,due to the lack of regulation of taxon names above the level of superfamily by the ICZn,and the usage of rank-based nomenclature,which is not tied to clades in a *** of regulation and the instability of rank-based nomenclature impede effective communication among *** review support for higher-level avian clades using a set of 10 phylogenomic data sets,and identify clades that are supported by congruency of at least four of *** provide formal definitions of the names of these clades based on the rules of the recently published *** names of 25 clades are here defined using minimum-crown-clade(n=23),minimum-clade(n=1)and maximum-crown-clade(n=1)*** new names are introduced here:Dinocrypturi,Pteroclimesites,Musophagotides,Phaethoquornithes and *** also review diagnostic apomorphies of the relevant clades,and identify known synonyms and *** establishing a formal link between higher-level taxon names and well-supported phylogenetic hypotheses,our phylogenetic definitions will provide a solid basis for the stabilization of avian higher-level nomenclature.

关键词： Aves Congruence PhyloCode Phylogenetic nomenclature Phylogenomics Rankless taxonomy

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

Th1 cytokines promote T-cell binding to antigen-presenting cells via enhanced hyaluronan production and accumulation at the immune synapse

引用

Cellular & Molecular Immunology 2010年第3期7卷 211-220页

作者： Paul L Bollyky Stephen P Evanko rebecca P Wu Susan Potter-Perigo S Alice Long Brian Kinsella Helena Reijonen Kelly Guebtner Brandon Teng Christina K Chan Kathy R Braun John A Gebe Gerald T nepom Thomas n Wight Benaroya Research Institute SeattleWAUSA

Hyaluronan(HA)production by dendritic cells(DCs)is known to promote antigen presentation and to augment T-cell activation and *** hypothesized that pericellular HA can function as intercellular‘glue’directly mediating T cell–DC *** primary human cells,we observed HA-dependent binding between T cells and DCs,which was abrogated upon pre-treatment of the DCs with 4-methylumbelliferone(4-MU),an agent which blocks HA ***,T cells regulate HA production by DCs via T cell-derived cytokines in a T helper(Th)subset-specific manner,as demonstrated by the observation that cell-culture supernatants from Th1 but not Th2 clones promote HA *** effects were seen upon the addition of exogenous Th1 cytokines,IL-2,interferon c(IFn-c)and tumor necrosis factor a(TnF-a).The critical factors which determined the extent of DC–T cell binding in this system were the nature of the pre-treatment the DCs received and their capacity to synthesize HA,as T-cell clones which were pre-treated with monensin,added to block cytokine secretion,bound equivalently irrespective of their Th *** data support the existence of a feedforward loop wherein T-cell cytokines influence DC production of HA,which in turn affects the extent of DC–T cell *** also document the presence of focal deposits of HA at the immune synapse between T-cells and APC and on dendritic processes thought to be important in antigen *** data point to a pivotal role for HA in DC–T cell interactions at the IS.

关键词： dendritic cell hyaluronan immune synapse pericellular matrix Th1

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

Hepatic sarcoidosis complicating treatment-naive viral hepatitis

引用

World Journal of Hepatology 2012年第12期4卷 402-405页

作者： Aloysious Aravinthan William Gelso Anita Limbu rebecca Brais Paul Richardson Department of Hepatology Cambridge University Hospitals NHS TrustCambridge CB2 0QQUnited Kingdom Department of Hepatology Cambridge University Hospitals NHS TrustCambridge CB2 0QQUnited Kingdom n Department of Histopathology Cambridge University Hospitals NHS TrustCambridge CB2 0QQUnited Kingdom Department of Hepatology The Royal Liverpool and Broadgreen University Hospitals NHS TrustLiverpool L7 8XPUnited Kingdom

Hepatic sarcoidosis is usually asymptomatic but rarely leads to adverse liver-related ***-existence of viral hepatitis and hepatic sarcoidosis is a rare,but recognised *** a balance between immune suppression and anti-viral therapy may be *** in the presence of viral hepatitis can lead to rapid deterioration of liver ***,anti-viral therapy may exacerbate granulomatous *** we present two cases of viral hepatitis co-existing with sarcoidosis that illustrate successful management *** one,hepatitis B replication was suppressed with oral antiviral therapy before commencing *** the second,remission of hepatic sarcoidosis was achieved with prednisolone,before treating hepatitis C and obtaining a sustained virological response with pegylated interferon and ribavirin therapy.

关键词： Hepatic sarcoidosis Chronic hepatitis C infection Chronic hepatitis B infection Immune suppression Anti-viral therapy

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

Sequence analysis of peptides with biological activities using electrospray-Fourier transform ion cyclotron resonance mass spectrometry

引用

Chinese Science Bulletin 2001年第15期46卷 1281-1285页

作者： HE Meiyu XU Jiaxi HE Xiaoran Tak Wah Dominic Chan.rebecca L.C.Lau Department of Chemistry Peking UniversityBeijing 100871China Beijing Mass Spectrometry Center Beijing 100080China Department of Chemistry The Chinese University of Hong KongShatinN.T.Hong KongChina

The mass spectra of five peptides with biological activities are reported. All mass spectra were recorded using a 4.7-T Fourier transform ion cyclotron resonance mass spectrometer equipped with an external electrospray source. The accurate molecular weights for the five peptides prepared by solid phase synthesis were measured as 1765.9013, 1063.5420, 1092.5254, 820.3804 and 1078.5193, respectively. All the data were obtained with the external calibration. Differences between observed and theoretical monoisotopic molecular weights were in the (0.2-1.0)×10-6 range. The complete primary sequence for the five polypep-tides were determined using the method of in-source electrospray ionization/collision induced dissociation (ESI/CID). All the intact y series ions and b series ions were obtained from various peptides respectively, thus determining the sequences of the five polypeptides. We found that the meas-ured accurate molecular mass of sample 4 was not in agreement with that expected from the planned

关键词： sequence peptide with biological activity Fourier transform ion cyclotron resonance mass spectrometry electrospray collision-induced dissociation.

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

Metabolite profile comparisons between ascending and descending colon tissue in healthy adults

引用

World Journal of Gastroenterology 2020年第3期26卷 335-352页

作者： Bridget A Baxter Kristopher D Parker Michael J nosler Sangeeta Rao rebecca Craig Catherine Seiler Elizabeth P Ryan Department of Environmental and Radiological Health Sciences Colorado State UniversityFort CollinsFort CollinsCO 80523United States University of Colorado Health Gastroenterology Clinic Fort CollinsCO 80524United States Department of Clinical Sciences Colorado State UniversityFort CollinsCO 80523United States Harmony Surgery Center Fort CollinsCO 80528United States Director of Clinical Operations Harmony Surgery CenterFort CollinsCO 80523United States

BACKGROUnD Obesity is a risk factor for colorectal cancer,yet metabolic distinctions between healthy right and left colon tissue,before cancer is diagnosed,remains largely *** study compared right-ascending and left-descending colon tissue metabolomes to identify differences from the stool metabolome in normal weight,overweight,and obese *** To examine right and left colon tissue metabolites according to body mass index that may serve as mechanistic targets for interventions and biomarkers for colon cancer *** Global,non-targeted metabolomics was applied to assess right-ascending and left-descending colon tissue collected from healthy adults undergoing screening colonoscopies to test the hypothesis that BMI differentially impacts colon tissue metabolite *** colon tissue and stool metabolome of healthy adults(n=24)was analyzed for metabolite signatures and metabolic pathway networks implicated in progression of colorectal *** Ascending and descending colon contained 504 host,food,and microbiotaderived metabolites from normal weight,overweight and obese adults grouped according to body mass *** acids,lipids,and nucleotides were among the chemical types that further differentiated from the stool metabolite *** weight adults had 46 significantly different metabolites between ascending and descending colon tissue locations,whereas there were 37 metabolite differences in overweight and 28 metabolite differences for obese adults(Pne n-oxide,endocannabinoids and monoacylglycerols with different relative abundances identified between ascending and descending *** and secondary bile acids,vitamins,and fatty acids also showed marked relative abundance differences in colon tissue from overweight/obese *** There were metabolite profile differences between right-ascending and leftdescending colon tissue in healthy *** lipids and other metabolites in

关键词： Colon Ascending Descending Metabolomics Obesity Stool

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

感官评价实践

引用

作者： (美)Herbert Stone (美)rebecca n. Bleibaum (美)Heather A. Thomas

来源：南通市图书馆图书评论

学校读者我要写书评

暂无评论

Measurement of(n,α)and(n,2n)reaction cross sections at a neutron energy of 14.92±0.02 MeV for potassium and copper with uncertainty propagation

引用

Chinese Physics C 2022年第1期46卷 110-117页

作者： A.Gandhi Aman Sharma rebecca Pachuau1 namrata Singh L.S.Danu S.V.Suryanarayana B.K.nayak A.Kumar Department of Physics Banaras Hindu UniversityVaranasi 221005India nuclear Physics Division Bhabha Atomic Research CentreMumbai 400085India

Experimentally measured neutron activation cross sections are presented for the ^(65)Cu(n,0)^(62m)Cu,^(41) K(n,a)^(38C)l,and ^(65)Cu(n.2n)^(64)Cu reactions with detailed uncertainty *** neutron cross secions were measured at an incident energy of 14.92±0.02 MeV,and the neutrons were based on the(d,n)a fusion *** ^(27) Al(n,a)^(24)na reaction was used as a reference reaction for the normalization of the neutron *** pre-calib-rated lead-shielded HPGe detector was used to detect the residues'γ-ray *** data from the measured cross sections are compared to the previously measured cross sections from the EXFOR database,theoretically calculated cross sections using the TALYS and EMPIRE codes,and evaluated nuclear data.

关键词： nuclear reactions (n,a)and(n,2n)reactions t(c/,n)a neutron source uncertainty propagation covariance analysis TALYS-1.9 and EMPIRE-3.2 code

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

Chemokine receptor 8 expression may be linked to disease severity and elevated interleukin 6 secretion in acute pancreatitis

引用

World Journal of Gastrointestinal Pathophysiology 2021年第6期12卷 115-133页

作者： Mwangala nalisa Ekene Emmanuel nweke Martin D Smith Jones Omoshoro-Jones John WS Devar rebecca Metzger Tanya n Augustine Pascaline n Fru Department of Surgery School of Clinical MedicineFaculty of Health SciencesUniversity of the WitwatersrandJohannesburg 2193GautengSouth Africa Department of Surgery Chris Hani Baragwanath Academic HospitalJohannesburg 1864GautengSouth Africa Institut für Immunologie Ludwig-Maximilians-Universität MünchenMünchen 80539Germany School of Anatomical Sciences Faculty of Health ScienceUniversity of the WitwatersrandJohannesburg 2193GautengSouth Africa

BACKGROUnD Acute pancreatitis(AP)is an inflammatory disease,which presents with epigastric pain and is clinically diagnosed by amylase and lipase three times the upper limit of *** 2012 Atlanta classification stratifies the severity of AP as one of three risk categories namely,mild AP(MAP),moderately severe AP(MSAP),and severe AP(SAP).Challenges in stratifying AP upon diagnosis suggest that a better understanding of the underlying complex pathophysiology may be *** To identify the role of the chemokine receptor 8(CCR8),expressed by T-helper type-2 Lymphocytes and peritoneal macrophages,and its possible association to Interleukin(IL)-6 and AP *** This study was a prospective case-control study.A total of 40 patients were recruited from the Chris Hani Baragwanath Academic Hospital and the Charlotte Maxeke Johannesburg Academic *** were performed on 29 patients(14 MAP,11 MSAP,and 4 SAP)and 6 healthy controls as part of a preliminary study.A total of 12 mL of blood samples were collected at Day(D)1,3,5,and 7 post epigastric *** multiplex immunoassay panels,real-time polymerase chain reaction(qRT-PCR)arrays,and multicolour flow cytometry analysis,immune response-related proteins,genes,and cells were profiled *** Prism^(TM) software and fold change(FC)analysis was used to determine differences between the groups.Pnsidered *** The concentration of IL-6 was significantly different at D3 post epigastric pain in both the MAP group and MSAP group with P=0.001 and P=0.013 respectively,in a multiplex *** a FC of 2 was applied to identify differentially expressed genes using RT2 Profiler,CCR8 was shown to increase steadily with disease severity from MAP(1.33),MSAP(38.28)to SAP(1172.45)median *** verification studies using RT-PCR showed fold change increases of CCR8 in MSAP and SAP ranging from 1000 to 1000000 times when represented as Log10,compared to healthy co

关键词： Acute Pancreatitis Severity Stratification,Interleukin-6 Chemokine Receptor 8 Lymphocytes Monocytes

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

Hierarchically Structured nanocomposites via a“Systems Materials Science”Approach

引用

Accounts of Materials Research 2022年第12期3卷 1248-1259页

作者： rebecca L.Li Carl J.Thrasher Theodore Hueckel Robert J.Macfarlane Department of Materials Science and Engineering Massachusetts Institute of TechnologyCambridgeMassachusetts 02139United States Department of Mechanical Engineering Massachusetts Institute of TechnologyCambridgeMassachusetts 02139United States

COnSPECTUS:nanocomposite materials can achieve desirable characteristics otherwise unavailable to single component systems,making them attractive platforms to precisely modulate a material’s mechanical,electromagnetic,thermal,and optical *** these properties are often dependent on the organization of constituent materials just as much as their relative composition,intentionally programming composite properties requires hierarchical structural control across many length ***,the fundamental forces governing the atomic,molecular,nanoscale,microscale,and macroscale composition and structure of a material are all interlinked,and thus must be manipulated simultaneously to properly create ideal designer materials.

关键词： properties composite composites

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

Revascularization and outcomes in Veterans with moderate to severe ischemia on myocardial perfusion imaging

引用

Military Medical Research 2017年第3期4卷 127-131页

作者： David E.Winchester Alexander J.Bolanos Anita Wokhlu rebecca J.Beyth Leslee J.Shaw Malcom Randall VAMC North Florida/South Georgia Veterans Health System Division of Cardiovascular Medicine University of Florida College of Medicine Malcom Randall VAMC Department of Medicine University of Florida College of Medicine Division of General Internal Medicine University of Florida College of Medicine Division of Cardiology Emory University School of Medicine

Background： The prevalence of ischemia on nuclear myocardial perfusion imaging （MPI） has been decreasing. Recent research has questioned the benefit of invasive revascularization for patients with moderate to severe ischemia. We hypothesized that patients with moderate to severe ischemia could routinely undergo successful revascularization. Methods： We analyzed data from 544 patients who underwent an MPI at a single academic Veterans Affairs Medical Center. Patients with moderate to severe ischemia, defined as a summed difference score （SDS） 8 or greater, were compared to the rest of the cohort. Results： Of the total cohort （n=544）, 39 patients had MPI studies with resultant moderate to severe ischemia. Patients with ischemia were more likely to develop coronary artery disease （74.4% versus 38.8%, P〈0.0001） and have successful revascularization （38.5% versus 4.0%, P〈0.0001） during the following year. Revascularization was attempted in 31 patients with moderate to severe ischemia, though only 15（47%） of these attempts were successful, Ischemia was predictive of myocardial infarction （5.1% versus 0.8%, P=0.01） within I year. Conclusion： Moderate to severe ischemia is an uncommon finding in a contemporary nuclear laboratory. Among patients with ischemia, revascularization is typically attempted but is frequently unsuccessful. Trial registration： This trial does not appear on a registry as it is neither randomized nor prospective.

关键词： Myocardial ischemia nuclear myocardial perfusion imaqinq Veterans Revascularization

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

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

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：