检索结果-南通市图书馆

Tanaka Formula and Local Time for a Class of Interacting Branching Measure-valued Diffusions

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

Acta Mathematica Sinica,English Series 2024年第4期40卷 1059-1098页

作者： Donald A.DAWSON Jean vaillancourt Hao WANG School of Mathematics and Statistics Carleton UniversityOttawaCanada Department of Decision Sciences HECMontrealCanada Department of Mathematics University of OregonEugeneUSA

We construct superprocesses with dependent spatial motion(SDSMs)in Euclidean spaces R^(d)with d≥1 and show that,even when they start at some unbounded initial positive Radon measure such as Lebesgue measure on R^(d),... 详细信息

关键词： Measure-valued diffusions stochastic partial differential equations superprocesses branching processes local time Tanaka formula

Travelling Wave Solutions of Integro-differential Equations of One-dimensional Neuronal Networks

在线全文

学校读者我要写书评

暂无评论

Acta Mathematicae Applicatae Sinica 2015年第3期31卷 767-782页

作者： Han HAO Rémi vaillancourt Department of Mathematics and Statistics University of Ottawa

Travelling wave solutions of integro-differential equations for modeling one-dimensional neuronal networks, are studied. Under moderate continuity assumptions, necessary and sufficient conditions for the existence and uniqueness of monotone increasing（decreasing） Travelling wave solutions are established. Some faults in previous studies are corrected.

关键词： travelling wave solution neuronal network integral-differential equation

Temperature Distributions for regional Hypothermia Based on Nonlinear Bioheat Equation of Pennes Type: Dermis and Subcutaneous Tissues

在线全文

学校读者我要写书评

暂无评论

Applied Mathematics 2012年第3期3卷 217-224页

作者： Emmanuel Kengne Ahmed Lakhssassi Rémi vaillancourt Department of Mathematics and Statistics University of Ottawa Ottawa Canada Laboratoire d’Ingénierie des microsystèmes Avancés Département d’Informatique et d’Ingénierie Université du Québec en Outaouais Succursale Hull Gatineau Canada

We have used a nonlinear one-dimensional heat transfer model based on temperature-dependent blood perfusion to predict temperature distribution in dermis and subcutaneous tissues subjected to point heating sources. By using Jacobi elliptic functions, we have first found the analytic solution corresponding to the steady-state temperature distribution in the tissue. With the obtained analytic steady-state temperature, the effects of the thermal conductivity, the blood perfusion, the metabolic heat generation, and the coefficient of heat transfer on the temperature distribution in living tissues are numerically analyzed. Our results show that the derived analytic steady-state temperature is useful to easily and accurately study the thermal behavior of the biological system, and can be extended to such applications as parameter measurement, temperature field reconstruction and clinical treatment.

关键词： regional Hypothermia Dermis and Subcutaneous Tissues Jacobi Elliptic Functions Temperature-Dependent Blood Perfusion

Illustrated manual of poultry diseases:a world-wide collaboration

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

Illustrated manual of poultry diseases:a world-wide collabor...

A microsatellite study on outcrossing rates and contamination in an Eucalyptus globulus breeding arboretum

The 15th World Veterinary Poultry Congress

作者： Jeanne Brugère-Picoux Jean-Pierre vaillancourt National veterinary School of Alfort 94704 Maisons Alfort CedexFrance. College of Veterinary Medicine Université de MontréalQuébecCanada J2S 7C6

＜正＞This will be the second edition of the Illustrated Manual of Poultry Diseases（IMPD）.This edition will be substantially different from the first one that was published only in *** second edition will be com- pletely in color with left pages reserved for pictures,graphs,and schematics;and with right pages used for

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Journal of Forestry research 2008年第2期19卷 136-140页

作者：饶红欣 Briony Patterson Brad Potts Réne vaillancourt 湖南省森林植物园湖南长沙4101161 塔斯马尼亚大学植物学系林业可持续发展研究中心

Four pairs of microsatellite molecular polymorphism primers were used to analyse microsatellite fingerprints of 188 seedlings derived from an open-pollinated progeny grafted Eucalyptus globulus breeding arboretum in Victoria, south-eastern Australia. The microsatellite loci chosen for this study were highly polymorphic with the mean number of alleles per locus of 14.25. Individual mothers varied in their outcrosssing rate estimate from 15% to 95%, the overall outcrossing level in the arboretum was 47.9% and the contamination rate was 17.6%. The high selfing level was likely to result in marked inbreeding depression in the performance of open-pollinated seed lots. Open-pollinated seeds collected from such arboreta are not advisable because of its low genetic quality, although such arboreta may be useful for the seed production through large-scale manual pollination or collecting seeds only from trees or genotypes within the arboretum that have high outcrossing rates.

关键词： E. globulus breeding arboretum microsatellite outcrossing rate pollen contamination

Emergency department presentation changes due to the coronavirus disease pandemic in Nova Scotia,Canada

在线全文

学校读者我要写书评

暂无评论

World Journal of Emergency Medicine 2023年第1期14卷 62-64页

作者： Tara Dahn Patrick T.Fok Hana Wiemer Daniel J.Dutton Valancy Cole David Lewis Tong Liu Keith R.Brunt Robert Hanlon Jacqueline Fraser Chris vaillancourt Paul Atkinson Department of Emergency Medicine Dalhousie UniversityHalifax B3H 3A7Canada Department of Community Health and Epidemiology Dalhousie UniversitySaint John E2K 5E2Canada Dalhousie Medicine New Brunswick Saint John E2L 4L5Canada Department of Emergency Medicine Level One Saint John Regional HospitalSaint John E2L 4L2Canada Department of Emergency Medicine Horizon Health NetworkSaint John E2L 4L2Canada

Multiple studies have reported decreased emergency department(ED)patient volumes during the coronavirus disease(COVID-19)pandemic,[1-6]including areas most affected by the virus.[7]Most existing studies have investigated general trends in ED presentations and have not examined the impact of COVID-19 on different types of EDs,specific ED patient groups,or illness presentations.

关键词： Canada department patient

The activating effect of IFN-y on monocytes/macrophages is regulated by the LIF-trophoblast-lL-lO axis via Statl inhibition and Stat3 activation

在线全文

学校读者我要写书评

暂无评论

Cellular & Molecular Immunology 2015年第3期12卷 326-341页

作者： Angla..am Dallagi Julie Girouard Jovane Hamelin-Morrissette Rachel Dadzie Laetitia Laurent Cathy vaillancourt Julie Lafond Christian Carrier Carlos reyes-Moreno Groupe de recherche en Oncologie et Endocrinologie Moleculaires Universite du Quebec a Trois-Rivieres departement de biologie medicale Trois-Rivieres PQ G9A 5H7 Canada Centre de recherche BioMed UQAM-UQTR-INRS Montreal PQ H3C 3P8 Canada INRS-Institut Armand-Frappier Universite du Quebec Laval PQ H7V 1B7 Canada Universite du Quebec a Montreal departement des sciences biologiques Montr&al QC H3C 3P8Canada Centre Hospitalier regional de Trois-Rivieres Trois-Rivieres PQ G9A 1Y1 Canada

Interferon gamma （IFN-7） and leukemia inhibitory factor （LIF） are key gestational factors that may differentially affect leukocyte function during gestation. Because IFN-,/induces a pro-inflammatory phenotype in macrophages and because trophoblast cells are principal targets of LIF in the placenta, we investigated whether and how soluble factors from trophoblast cells regulate the effects of IFN-7 on macrophage activation. IFN-7 reduces macrophage motility, but enhances Statl activation, pro-inflammatory gene expression and cytotoxic functions. Soluble factors from villous cytotrophoblasts （vCT＋LIF cells） and BeWo cells （BW/ST＋LIF cells） that were differentiated in the presence of LIF inhibit macrophage Statl activation but inversely sustain Stat3 activation in response to IFN-7. vCT＋LIF cells produce soluble factors that induce Stat3 activation; this effect is partially abrogated in the presence of neutralizing anti-interleukin 10 （IL-IO） antibodies. Moreover, soluble factors from BW/ST＋LIF cells reduce cell proliferation but enhance the migratory responses of monocytes. In addition, these factors reverse the inhibitory effect of IFN-y on monocyte/macrophage motility. BW/ST＋LIF cells also generate IFN-y-activated macrophages with enhanced IL-IO expression, but reduced tumor-necrosis factor alpha （TNF-cd, CD14 and CD40 expression as well as impaired cytotoxic function. Additional assays performed in the presence of neutralizing anti-lL-lO antibodies and exogenous IL-IO demonstrate that reduced macrophage cytotoxicity and proliferation, but increased cell motility result from the ability of trophoblast IL-IO to sustain Star3 activation and suppress IFN-y-induced Star1 activation. These in vitro studies are the first to describe the regulatory role of the LIF-trophoblast-lL- 10 axis in the process of macrophage activation in response to pro-inflammatory cytokines.

关键词： cell migration/motility embryonic cell gestational factors inflammatory cell macrophage deactivation

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

电力变压器中局部放电测量的三种技术的比较

变压器 1985年第12期 28-33页

作者： G.H.vaillancourt 姜孝腊

本文对140台大型电力变压器所做的局部放电测量作了比较,测量时使用了刻度为μV的无线电干扰电压表(按NEMA107标准)和刻度为pC的宽频带与窄频带局部放电检测仪(按IEC出版物270)。文中以pC(?)μV的比值形式给出了结果,并与参考文献中的... 详细信息

本文对140台大型电力变压器所做的局部放电测量作了比较,测量时使用了刻度为μV的无线电干扰电压表(按NEMA107标准)和刻度为pC的宽频带与窄频带局部放电检测仪(按IEC出版物270)。文中以pC(?)μV的比值形式给出了结果,并与参考文献中的数据作了比较。得出的结论是,尽管无线电干扰电压测量技术可用于检测局部放电的存在,但它对电力变压器的局部放电测量是不适宜的。因为变压器绕组中局部放电脉冲的衰减与频率有很大的依赖关系,窄频带局部放电测量仪器不能应用于这些试验。已做了一些试验,其中包括在一个未装入油箱的绕组的不同部分注入局部放电,这些试验均得出这一结论。因此,作者推荐宽频带局部放电检测仪作为电力变压器验收试验最合适的仪器。

关键词：局部放电无线电干扰干扰电压局部放电检测仪电力变压器

用于分路电抗器损耗测量的以高压电流比较器为基础的频率补偿的电容电桥

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

中国检验检测 1983年第6期 62-64页

作者： G.H.vaillancourt 于纪良

一、前言用电抗器电流倒相和tgδ平衡的方法,使以电流比较器为基础的电容电桥可测量分路电抗器损耗。但在感性电抗器与参考电容比较时,电桥对频率是灵敏的。为了克服这一缺陷,Malewski 等提出了一种改进的以电流比较器为基础的电容电桥... 详细信息

一、前言用电抗器电流倒相和tgδ平衡的方法,使以电流比较器为基础的电容电桥可测量分路电抗器损耗。但在感性电抗器与参考电容比较时,电桥对频率是灵敏的。为了克服这一缺陷,Malewski 等提出了一种改进的以电流比较器为基础的电容电桥,并已用于各实验

关键词：频率补偿电容电桥电流比较器参考电容损耗测量集中参数测量