检索结果-南通市图书馆

软件 2008年第7期29卷 22-24页

作者： c.g.Masi

优秀的厨师知道可口的菜肴应该使用考究的材料,设计卓越的机电系统同样也要选用正确的软件和硬件。

关键词：机电一体化 Brown 艺术调理软件包操作系统应用程序软硬件

Animal models of portal hypertension

在线全文

学校读者我要写书评

暂无评论

World Journal of gastroenterology 2006年第41期12卷 6577-6584页

作者： Juan g Abraldes Marcos Pasarín Juan carlos garcía-Pagán Hepatic Hemodynamic Laboratory Liver UnitICMDiMHospital ClinicIDIBAPSUniversity of BarcelonaSpain

Animal models have allowed detailed study of hemodynamic alterations typical of portal hypertension and the molecular mechanisms involved in abnormalities in splanchnic and systemic circulation associated with this syndrome. Models of prehepatic portal hypertension can be used to study alterations in the splanchnic circulation and the pathophysiology of the hyperdynamic circulation. Models of cirrhosis allow study of the alterations in intrahepatic microcirculation that lead to increased resistance to portal flow. This review summarizes the currently available literature on animal models of portal hypertension and analyzes their relative utility. The criteria for choosing a particular model, depending on the specific objectives of the study, are also discussed.

关键词： cirrhosis Nitric Oxide Portal vein

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

机器视觉成熟时

软件 2008年第9期29卷 36-37,39页

作者： c.g.Masi

工程师们发现,机器视觉已经可以取代更加繁琐的基于单点传感器的系统。在我35年前刚开始接触机器视觉技术的时候,数码照相机还是实验室里的新鲜玩意,图像采集卡才刚刚进入市场,图像处理也还是一门暗房里的艺术。随着视觉技术逐渐成熟,... 详细信息

工程师们发现,机器视觉已经可以取代更加繁琐的基于单点传感器的系统。在我35年前刚开始接触机器视觉技术的时候,数码照相机还是实验室里的新鲜玩意,图像采集卡才刚刚进入市场,图像处理也还是一门暗房里的艺术。随着视觉技术逐渐成熟,图像传感器进入了百万像素时代,

关键词：机器视觉技术成熟图像传感器数码照相机图像采集卡图像处理百万像素工程师

canine Herpesvirus Latent Infection in Experimentally Infected Rabbits

在线全文

学校读者我要写书评

暂无评论

Open Journal of Veterinary Medicine 2020年第6期10卷 92-102页

作者： g. F. Nájera Jantes J. Barrón gonzález E. g. Valdivia Lara J. I. Ángeles Solis c. cuenca Verde g. Valdivia Anda Laboratorio de Patogenicidad Microbiana Unidad de Investigación Multidisciplinaria FESC-UNAM Cuautitlán Izcalli Estado de México México

An experimental inoculation of canine Herpesvirus (HVc), strain H17, was performed in rabbits previously and simultaneously treated with dexamethasone, the behavior of the leukocyte count was followed prior and during the experimental phase. Upon death or euthanasia of the animals, a necropsy and evaluation of various organs was performed by histopathology and by nested PcR against the Herpesvirus Polymerase gene. All animals inoculated with dexamethasone showed leukopenia (p culated with HVc and treated with dexamethasone did not show significant histological lesions, but showed amplification of the Herpesvirus Polymerase gene in various organs despite not showing clinical signs of the illness. A dolphin Herpesvirus isolate was used as a positive control as rabbits developed fatal systemic disease and lesions typical of active (lytic) infection in various organs within 72 hours post-inoculation. The absence of clinical signs, significant histological lesions, and the presence of viral DNA in some organs suggested a state of latency due to canine Herpesvirus. Dexamethasone allowed HVc infection, but did not promote viral reactivation in rabbits contrary to that observed in canines experimentally induced to the lytic cycle by HVc.

关键词： Rabbit and canine Herpesvirus Experimental Infection Dexametasone and Latency

Long-term behavior of positive solutions of an exponentially self-regulating system of difference equations

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Biomathematics 2017年第3期10卷 285-297页

作者： N. Psarros g. Papaschinopoulos K. B. Papadopoulos School of Engineering Democritus University of Thrace Xanthi 67100 Greece American University of the Middle East Kuwait

In this paper, we study the asymptotic behavior of the positive solutions of a system of the following difference equations：xn＋1=ayn＋bxne^-xn-yn , yn＋1=cxn＋dyne^-xn-yn ,where a, b, c, d are positive constants and... 详细信息

关键词： Difference equations exponentially self-regulating system boundedness persistence asymptotic behavior.

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

gaN/Sic异质结的慢正电子研究

物理学报 2008年第9期57卷 5906-5910页

作者：王海云翁惠民 c．c．Ling 南京邮电大学应用物理系南京210003 中国科学技术大学近代物理系合肥230026 香港大学物理系香港中国

通过对不同生长厚度gaN/Sic(n-n)的慢正电子研究,发现在gaN/Sic的界面中存在大量各种缺陷并在界面两端形成两个不同方向的电场.这些缺陷的产生和Sic衬底表面制备以及gaN和Sic不同的热膨胀系数有关.而缺陷中大量的带状缺陷在界面中形成... 详细信息

通过对不同生长厚度gaN/Sic(n-n)的慢正电子研究,发现在gaN/Sic的界面中存在大量各种缺陷并在界面两端形成两个不同方向的电场.这些缺陷的产生和Sic衬底表面制备以及gaN和Sic不同的热膨胀系数有关.而缺陷中大量的带状缺陷在界面中形成一个费米能级钉扎(Fermi level pinning),它的存在使界面中存在一定高度的势垒,导致在界面两端的一定区域内形成两个不同方向的电场.用VEPFIT模拟该电场的存在,分四层(gaN/Interface/Sic1/Sic2)进行拟合,得到了很好的拟合效果,并可以给出电场的确定数值.这些电场的存在对正电子的湮没产生了重要影响,使得在Sic区域,有电场的区域内正电子的有效扩散长度减小.界面两端电场大小和界面的带电量以及界面宽度等信息有关,故对该电场的研究可以为研究真实的界面层及其性质的可能应用提供有效的参考价值.

关键词：正电子湮没缺陷半导体

在线全文

学校读者我要写书评

暂无评论

信号调理器——专为基于Pc的控制

软件 2008年第5期29卷 28-32页

作者： c.g.Masi

西门子负责输入/输出控制器以及软件产品的商业主管Bob Nelson说：“如果你采用的是一套标准的控制解决方案,例如一个可编程自动控制器（PAc）,那么你就不必关心控制器的内部操作了,因为控制器生产商会为你解决这些问题。如果你采用的... 详细信息

西门子负责输入/输出控制器以及软件产品的商业主管Bob Nelson说：“如果你采用的是一套标准的控制解决方案,例如一个可编程自动控制器（PAc）,那么你就不必关心控制器的内部操作了,因为控制器生产商会为你解决这些问题。如果你采用的是一套基于Pc的开放式控制环境——毫无疑问，这种开放性会为你带来巨大的灵活性——但是，这也同时意味着用户需要担负起更大的责任．以保证整套系统能够满足性能方面的要求．同时避免落入无法彻底整合系统各个部分的怪圈之中。”

关键词：自动控制器信号调理器 Pc 整合系统输入/输出软件产品控制环境用户需要

challenge of liver disease in systemic lupus erythematosus:clues for diagnosis and hints for pathogenesis

在线全文

学校读者我要写书评

暂无评论

World Journal of Hepatology 2014年第6期6卷 394-409页

作者： Ferno Bessone Natalia Poles Marcelo g Roma gastroenterology and Hepatology Department University of Rosario School of Medicine Institute of Experimental Physiology (cONI-cET-UNR) Faculty of Biochemical and Pharmaceutical SciencesUniversity of Rosario

Systemic lupus erythematosus(SLE) encompass a broad spectrum of liver diseases. We propose here to classify them as follows:(1) immunological comorbilities(overlap syndromes);(2) non-immunological comorbilities associated to SLE; and(3) a putative liver damage induced by SLE itself, referred to as "lupus hepatitis". In the first group, liver injury can be ascribed to overlapping hepatopathies triggered by autoimmune mechanisms other than SLE occurring with higher incidence in the context of lupus(e.g., autoimmune hepatitis, primary biliary cirrhosis). The second group includes non-autoimmune liver diseases, such as esteatosis, hepatitis c, hypercoagulation state-related liver lesions, hyperplasic parenchymal and vascular lesions, porphyria cutanea tarda, and drug-induced hepatotoxicity. Finally, the data in the literature to support the existence of a hepatic disease produced by SLE itself, or the occurrence of a SLE-associated prone condition that increases susceptibility to acquire other liver diseases, is critically discussed. The pathological mechanisms underlying each of these liver disorders are also reviewed. Despite the high heterogeneity in the literature regarding the prevalence of SLE-associated liver diseases and, in most cases, lack of histopathological evidence or clinical studies large enough to support their existence, it is becoming increasingly apparent that liver is an important target of SLE. consequently, biochemical liver tests should be routinely carried out in SLE patients to discard liver disorders, particularly in those patients chronically exposed to potentially hepatotoxic drugs. Diagnosing liver disease in SLE patients is always challenging, and the systematization of the current information carried out in this review is expected to be of help both to attain a better understanding of pathogenesis and to build an appropriate work-up for diagnosis.

关键词： Systemic lupus erythematosus Lupus hepatitis Esteatosis Regenerative nodular hyperplasia Hepatitis c Autoimmune hepatitis Hepatotoxicity Nonsteroidal anti-inflammatory drugs Methotrexate

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

在机控制

软件 2008年第6期29卷 24-24,26,27页

作者： c.g.Masi

把机械控制设备安装在机械上不是一个新主意。机械控制系统曾经一度都安装在它们所控制的机械上。当时必须如此．因为控制通过机械方式实现。而电动机械的手动控制至今都安装在机械上以方便操作员操作．我们也找不到理由不这样做。

关键词：控制设备机械控制系统机械方式手动控制操作员安装

在线全文

学校读者我要写书评

暂无评论

模糊神经控制系统

软件 2008年第1期29卷 20-22页

作者： c.g.Masi

神经网络和模糊逻辑可以解决传统系统无可奈何的问题。这里,我们将要介绍它们是如何工作,并且使诸如高速图形处理这类的应用受益。

关键词：模糊逻辑神经网络控制系统传统系统图形处理