检索结果-南通市图书馆

Adrenomedullin in cirrhotic and non-cirrhotic portal hypertension

World Journal of Gastroenterology 2003年第10期9卷 2325-2327页

作者： V Tahan e Avsar C Karaca e uslu F eren S Aydin H Uzun HO Hamzaoglu F Besisik C Kalayci A Okten N Tozun Gastroenterology Institute Marmara University Gastroenterology Department Medical Faculty Istanbul University Biochemistry Department Cerrahpasa Medical FacultyIstanbul University

AIM:Adrenomedullin (ADM) is a potent vasodilator peptide. ADM and nitric oxide (NO) are produced in vascular endothelial *** ADM level has been linked to hyperdynamic circulation and arterial vasodilatation in cirrhotic portal hypertension (CPH).The role of ADM in non-cirrhotic portal hypertension (NCPH) is unknown,plasma ADM levels were studied in patients with NCPH,compensated and decompensated cirrhosis in order to determine its contribution to portal hypertension (PH) in these groups. MeTHODS:There were 4 groups of *** 1 consisted of 27 patients (F/M:12/15) with NCPH due to portal and/or splenic vein thrombosis (mean age:41±12 years),group 2 consisted of 14 patients (F/M:6/8) with compensated (Child-Pugh A) cirrhosis (mean age:46±4), group 3 consisted of 16 patients (F/M:6/10) with decompensated (Child-Pugh C) cirrhosis (mean age:47±12). Fourteen healthy subjects (F/M:6/8) (mean age:44±8) were used as controls in Group *** level was measured by *** was determined as nitrite/nitrate level by chemoluminescence. ReSULTS:ADM level in Group 1 (236±61.4 pg/mL) was significantly higher than that in group 2 (108.4±28.3 pg/mL) and group 4 (84.1±31.5 pg/mL) (both Per than that in Group3 (324±93.7 pg/mL) (P=0.002).NO level in group 1 (27±1.4 μmol/L) was significantly higher than that in group 2 (19.8±2.8 μmol/L) and group 4 (16.9±1.6 μmol/L) but was lower than that in Group 3 (39±3.6 μmol/L) (for all three Pelation was observed between ADM and NO levels (r=0.827,Penomedullin and NO levels were high in both non-cirrhotic and cirrhotic portal hypertension and were closely correlated,Adrenomedullin and NO levels increased proportionally with the severity of cirrhosis,and were significantly higher than those in patients with NCPH. Portal hypertension plays an important role in the increase of ADM and *** damage in cirrhosis may contribute to the increase in these paramete

关键词： Adult Comparative Study Female Humans Hypertension, Portal Liver Cirrhosis Male Middle Aged Nitrates Nitric Oxide Nitrites Peptides Vasodilation

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

铬铁矿在液态Fe-Cr-C合金中的还原

引用

铁合金 1993年第2期24卷 50-58,23页

作者： e.uslu R.H.eRIC 孙继光哈瓦尔德钢钒公司威特沃特斯兰大学威特班克德兰士瓦

在温度1500—1680℃、惰性氩气条件下,对 Fe-Cr-C 合金中布什维尔德复合矿第六矿层的铬矿还原动力学进行了研究。采用了回转圆柱技术,铬矿回转圆柱的转动速度为0—1000转/分,熔体含铬30—80％,合碳2—8％。熔体的初始铬铁比的变化范围为... 详细信息

在温度1500—1680℃、惰性氩气条件下,对 Fe-Cr-C 合金中布什维尔德复合矿第六矿层的铬矿还原动力学进行了研究。采用了回转圆柱技术,铬矿回转圆柱的转动速度为0—1000转/分,熔体含铬30—80％,合碳2—8％。熔体的初始铬铁比的变化范围为0.42—0.45。以金属脱碳为题对铬矿尖晶石的还原做了研究。研究发现,随着温度、熔池的含碳量以及圆柱在400转/分内转速的增加,脱碳也增加;转速超过这一数值,脱碳几乎保持恒定。在铬含量50％以下,随着铬含量的增加,脱碳也增加,但在较高铬含量时,脱碳反而降低。在还原早期,即反应约30分钟内,发现氧的液态质量转移可能是反应的速度限制阶段。氧的激活能近似计算为每摩尔氧84.864kJ。在还原后期,固态铁及铬的扩散作用可能是速度限制阶段。扩散的激活能近似计算为每摩尔471.18kJ。

关键词：铬铁矿 Fe-Cr-C合金还原

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

铬铁矿在液态Fe-Cr-C合金中的还原(续)

引用

铁合金 1993年第3期24卷 53-56,59页

作者： e.uslu R.H.eRIC 孙继光哈瓦尔德钢、钒公司威特沃特斯兰大学威特班克德兰士瓦德兰士瓦

氧和碳的质量传递在利用旋转圆柱的几个研究中,发现依据能量函数,质量传递系数依赖于转动速度(w), K=常数·(w)~n [17] 作出K_o和K_c对数与w对数比值的曲线,对现有实验数据作回归分析得出,对于氧和碳n值分别为0.62和0.46。对于旋转圆柱... 详细信息

氧和碳的质量传递在利用旋转圆柱的几个研究中,发现依据能量函数,质量传递系数依赖于转动速度(w), K=常数·(w)~n [17] 作出K_o和K_c对数与w对数比值的曲线,对现有实验数据作回归分析得出,对于氧和碳n值分别为0.62和0.46。对于旋转圆柱,质量传递系数是施密特准数(Sc)

关键词：铬铁矿 Fe-Cr-C合金还原

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

Dielectric properties,electrical modulus and current transport mechanisms of Au/ZnO/n-Si structures

引用

Progress in Natural Science:Materials International 2018年第3期28卷 325-331页

作者： Yosef Badali ?emsettin Alt?ndal ?brahim uslu Department of Advanced Technologies Institute of Science and TechnologyGazi University Department of Physics Faculty of ScienceGazi University Department of Chemistry education Faculty of EducationGazi University

Au/Zn O/n-Si（MIS）structures were fabricated by using the RF sputtering method and their complex dielectric constant（ε*=ε’-jε’’）,electric modulus（M*=M′+j M’’）and electrical conductivity(σ=σdc+σac)values were investigated as a function of frequency（0.7 k Hz-1 MHz）and voltage(-6–（+6 V）)by capacitance-voltage（C-V）and conductance-voltage（G/ω-V）measurements to get more information on the conduction mechanisms and formation of barrier height between Au and *** lnσ-Lnf plots have two different regions corresponding to low-intermediate and high *** behavior of lnσ-lnf plots shows that the existence of two different conduction mechanisms（CMs）at low-intermediate and high ***,the reverse bias saturation current（I_o）,ideality factor（n）,barrier height(ΦBo)were determined from the forward bias I-V data and they were found as a strong function of *** value of n especially at low temperature is considerably higher than *** values ofΦB0and standard deviation（σs）were found from the intercept and slope ofΦBo-q/2k T plots as 0.551 e V and 0.075 V for the region I（80–220 K）and 1.126 e V and 0.053 V for the region II（220–400 K）,*** values ofΦBoand effective Richardson constant（A*）were found from slope and intercept of activation energy plots as 0.564 e V and 101.084 Acm-2K-2for the region I and 1.136 e V and41.87 Acm-2K-2for the region II,*** results confirm that the current-voltage-temperature（I-V-T）characteristics of the fabricated Au/Zn O/n-Si SBDs can satisfactorily be explained on the basis of Te theory with double GD of the BHs.

关键词： Au/ZnO/n-Si Dielectric properties electrical modulus Current-transport mechanism Double-Gaussian distribution Barrier height

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

Alveolar echinococcosis localized in the liver, lung and brain

引用

Chinese Medical Journal 2008年第1期121卷 90-92页

作者： Seyit Mehmet Kayacan Sezai Vatansever Suleyman Temiz Bora uslu Dilek Kayacan Vakur Akkaya Osman erk Bülent Saka Aytac Karadag Kultigin Turkmen Fatih Yakar Kerim Guler Istanbul University Istanbul Medical Faculty Department ofInternal Medicine |stanbul Turkey Republic of Turkey Ministry of Health Umraniy.e Education andResearch Hospital Department of Neurology istanbul Turkey Istanbul University Istanbul Medical Faculty Department ofPulmonary Medicine Istanbul Turkey

echinococcosis is a parasitic disease caused by the ,larval forms of echinococci. It has two main forms as the unilocular cystic form that is more commonly seen and caused by e. granulosus and the alveolar form that is rarely seen and caused by e. multilocularis. e. multilocularis usually contaminates from foxes and sometimes contaminates from domestic animals as dogs and cats to humans and usually affects the liver. Progression of alveolar echinococcosis is more severe and agressive. It can metastise to the lungs, brain and bones. We present a case of alveolar echinococcosis that was initially thought to be a lymphomatous infiltration but then determined to infect the liver, lung and brain in a patient with a large T-cell lymphoma.

关键词： alveolar echinococcosis lymphoma

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

不能手术的局部晚期或转移性胰腺癌患者用吉西他滨的疗效及预后因素

引用

世界核心医学期刊文摘（胃肠病学分册） 2006年第6期2卷 51-52页

作者： Sezgin C. Karabulut B. uslu R. e. Goker. 王铮(译) 陈云茹(校) 不详 ege University School of Medicine Division of Medical Oncology Tulay Aktas Oncology Hospital 35100 Bornova/Izmir Turkey

Objective. Most patients with pancreatic cancer show an inoperable locally advanced/ metastatic tumour at the time of diagnosis. The present study was aimed at determining the prognostic factors in patients with advanced pancreatic carcinoma treated with gemcitabine. Material and methods. Sixty-seven unresectable or metastatic pancreatic cancer patients treated with gemcitabine were included in the study and a total of 258 cycles of treatment were applied. Results. The overall response rate was 5%. Thirty-one percent of the patients had stable disease, whereas progressive disease was seen in 49%. Clinical benefit response rate was 15%. The median duration of response was 7.3 months. Median progression-free survival was 3 months, while median overall survival was 9 months. Univariate analysis revealed that worse results were found in patients with performance status (PS) =2, and in patients with primary tumour location in the body or tail of the pancreas (p e analysis of data revealed that the most important factor was PS of the patient, as the patients with PS =2 had worse results than the patients with PS =0-1 (p egative predictive factor for the survival of patients with advanced pancreatic carcinoma treated with gemcitabine.

关键词：胰腺癌患者预后因素吉西他滨局部晚期转移性手术多变量分析疗效中位时间

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

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

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：