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STATIC SOLUTIONS OF MIXED BURGERS-KdV EQUATION

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Chinese Science Bulletin 1989年第21期34卷 1835-1836页

作者：管克英 JACK gunson Department of Mathematics Beijing Institute of Aeronautics and Astronautics Beijing 100083 PRC Department of Mathematics University of Bimningham

The simplest model on the mixed effect of the dissipation and the dispersion of a nonlinear wave can be described with the mixed Burgers-KdV

关键词： Burgers dissipation ordinary qualitative constants derivative interpretation timer genera unstable

The Exterior Tricomi and Frankl Problem

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Journal of Mathematical Research with Applications 1990年第4期 485-493页

作者： johnm.Rassias The American College of Greece

F. G. Tricomi （1923—）, S. Gellerstedt （1935—）, *** （1945—）,A. V. Bitsadze and M. A. Lavrentiev （1950—）, M. H. Protter （1953—） and most of the recent workers in the field of mixed type boundary value problems have considered only one parabolic line of degeneracy. The problem with more than one parabolic line of degeneracy becomes more complicated. The above researchers and many others have restricted their attention to the Chaplygin equation:K（y）·u+u=f（x, y） and not considered the "generalized Chaplygin equation:"Lu=K（y）·u+u+r（x, y）·u=f（x, y） because of the difficulties that arise when r:=non-trivial （≠0）. Also it is unusual for anyone to study such problems in a doubly connected region. In this paper 1 consider a case of this type with two parabolic lines of degeneracy, r:= non-（?）≠（?）, in a doubly connected region,and such that boundary conditions are presenbed only on the "exterior boundary" of the mixed domain, and Ⅰobtam uniqueness （?） for quasllegular solutions

关键词： The Exterior Tricomi and Frankl Problem

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哺乳动物分布预测方法初探

兽类学报 2003年第4期23卷 351-357页

作者：解焱汪松李典谟 johnm acKinnon 中国科学院动物研究所北京100080 ASEAN生物多样性保护中心

本研究首先根据综合自然地理因素 (包括海拔、地形、气候、植被、水系、农业等 ) ,利用GIS技术手段 ,将中国版图划分成 12 4个基本单元。选择了 171种哺乳类物种 ,利用中国物种信息系统收集这些物种的分布信息 ,并运用GIS技术将这些信... 详细信息

本研究首先根据综合自然地理因素 (包括海拔、地形、气候、植被、水系、农业等 ) ,利用GIS技术手段 ,将中国版图划分成 12 4个基本单元。选择了 171种哺乳类物种 ,利用中国物种信息系统收集这些物种的分布信息 ,并运用GIS技术将这些信息转换为各个基本单元内这些物种存在与否的信息 ,再用数学量化分析方法 ,即Srensen多维相似性指数公式计算相关矩阵 ,以及Ward方法进行聚类分析 ,得到这 12 4个基本单元的哺乳类物种组成相似性聚类图。然后根据少数几个标本采集点所在的基本单元 ,利用这些基本单元与其他单元的物种组成相似程度 ,可以预测出物种的可能分布范围。本研究发现 ,这种预测方法简单 ,快速而且较准确。

关键词：哺乳动物生物地理单元信息系统分布相似性聚类分析分布预测

Portal hypertension in polycystic liver disease patients does not affect wait-list or immediate post-liver transplantation outcomes

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World Journal of Gastroenterology 2016年第45期22卷 9966-9973页

作者： Neil Rajoriya Dhiraj Tripathi Joanna A Leithead Bridget K gunson Sophie Lord James W Ferguson Gideon M Hirschfield Liver Unit Queen Elizabeth Hospital Centre for Liver Research NIHR Birmingham Liver Biomedical Research Unit University of Birmingham

AIM To establish the impact of portal hypertension(PH) on wait-list/post-transplant outcomes in patients with polycystic liver disease(PCLD) listed for liver transplantation. METHODS A retrospective single-centre case controlled study of consecutive patients listed for liver transplantation over 12 years was performed from our centre. PH in the PCLD cohort was defined by the one or more of following parameters:(1) presence of radiological or endoscopic documented varices from our own centre or the referral centre;(2) splenomegaly(> 11 cm) on radiology inabsence of splenic cysts accounting for increased imaging size;(3) thrombocytopenia(platelets < 150 × 109/L); or(4) ascites without radiological evidence of hepatic venous outflow obstruction from a single cyst. RESULTS Forty-seven PCLD patients(F: M = 42: 5) were listed for liver transplantation(LT)(single organ, n = 35; combined liver-kidney transplantation, n = 12) with 19 patients(40.4%) having PH. When comparing the PH group with non-PH group, the mean listing age(PH group, 50.6(6.4); non-PH group, 47.1(7.4) years; P = 0.101), median listing MELD(PH group, 12; non-PH group, 11; P = 0.422) median listing UKELD score(PH group, 48; non-PH group, 46; P = 0.344) and need for renal replacement therapy(P = 0.317) were similar. In the patients who underwent LT alone, there was no difference in the duration of ICU stay(PH, 3 d; non-PH, 2 d; P = 0.188), hospital stay length(PH, 9 d; non-PH, 10 d; P = 0.973), or frequency of renal replacement therapy(PH, 2/8; non-PH, 1/14; P = 0.121) in the immediate post-transplantation period. CONCLUSION Clinically apparent portal hypertension in patients with PCLD listed for liver transplantation does not appear to have a major impact on wait-list or peri-transplant morbidity.

关键词： Polycystic liver disease Portal hypertension Liver transplantation

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用同步辐射X射线研究材料结构

物理学进展 1992年第2期12卷 129-167页

作者：杨传铮 johnm.Newsam 中国科学院上海冶金研究所美国EXXON研究与工程公司

使用同步辐射X射线进行材料的散射、衍射和吸收实验要比用一般X射线源的实验能提供新的、更精确、更详细的结构信息。同步辐射实验技术已发展到经常用于解决材料结构问题广泛领域的阶段。本文评述了作为材料原子级结构研究的同步辐射X... 详细信息

使用同步辐射X射线进行材料的散射、衍射和吸收实验要比用一般X射线源的实验能提供新的、更精确、更详细的结构信息。同步辐射实验技术已发展到经常用于解决材料结构问题广泛领域的阶段。本文评述了作为材料原子级结构研究的同步辐射X射线散射和吸收技术的新进展,描述了包括表面和界面结构、局域结构、晶体结构和晶体缺陷在内的某些结构研究新例子,也提及最新发展和展望。

关键词：同步辐射 X辐射材料

Acute kidney injury and post-reperfusion syndrome in liver transplantation

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World Journal of Gastroenterology 2016年第42期22卷 9314-9323页

作者： Ilaria Umbro Francesca Tinti Irene Scalera Felicity Evison Bridget gunson Adnan Sharif James Ferguson Paolo Muiesan Anna Paola Mitterhofer Department of Clinical Medicine Nephrology and Dialysis B Sapienza University of Rome The Liver Unit Queen Elizabeth Hospital Birmingham Department of Health Informatics University Hospitals Birmingham NHS Foundation Trust National Institute for Health Research Birmingham Liver Biomedical Research Unit the Liver Unit Queen Elizabeth Hospital Birmingham the Institute of Immunology and Immunotherapy University of Birmingham Department of Nephrology and Transplantation Queen Elizabeth Hospital Birmingham

In the past decades liver transplantation(LT) has become the treatment of choice for patients with end stage liver disease(ESLD). The chronic shortage of cadaveric organs for transplantation led to the utilization of a greater number of marginal donors such as older donors or donors after circulatory death(DCD). The improved survival of transplanted patients has increased the frequency of long-term complications, in particular chronic kidney disease(CKD). Acute kidney injury(AKI) post-LT has been recently recognized as an important risk factor for the occurrence of denovo CKD in the long-term outcome. The onset of AKI post-LT is multifactorial, with pre-LT risk factors involved, including higher Model for End-stage Liver Disease score, more sever ESLD and pre-existing renal dysfunction, either with intra-operative conditions, in particular ischaemia reperfusion injury responsible for post-reperfusion syndrome(PRS) that can influence recipient's morbidity and mortality. Post-reperfusion syndrome-induced AKI is an important complication post-LT that characterizes kidney involvement caused by PRS with mechanisms not clearly understood and implication on graft and patient survival. Since preLT risk factors may influence intra-operative events responsible for PRS-induced AKI, we aim to consider all the relevant aspects involved in PRS-induced AKI in the setting of LT and to identify all studies that better clarified the specific mechanisms linking PRS and AKI. A Pub Med search was conducted using the terms liver transplantation AND acute kidney injury; liver transplantation AND post-reperfusion syndrome; acute kidney injury AND post-reperfusion syndrome; acute kidney injury AND DCD AND liver transplantation. Five hundred seventy four articles were retrieved on Pub Med search. Results were limited to title/abstract of English-language articles published between 2000 and 2015. Twenty-three studies were identified that specifically evaluated incidence, risk factors and outc

关键词： Liver transplantation Acute kidney injury Post-reperfusion syndrome Donation after circulatory death Chronic kidney disease

METHODS FOR DETERMING SAMPLE SIZE IN A MORPHOMETRIC STUDY

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METHODS FOR DETERMING SAMPLE SIZE IN A MORPHOMETRIC STUDY

第四届全国生物医学体视学学术会议、第七届全军军事病理学学术会议、第三届全军定量病理学学术会议

作者： johnm Basgen MD University of Minnesota USA University of Minnesota USA

When planning a morphometric study important questions to ask are:How many animalsare needed in each experimental group,and how many tissue blocks are needed from each *** too few animals are used or too few measurements made important scientific results may *** too many animals are used or too many measurements made,time and money are *** this paper I will present methods for determining (1) the number of animals needed in an

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美国植物检疫中截获的长蠹科常见属种检索

植物检疫 1990年第1期4卷 41-45页

作者： johnm.Kingsolver 陈仲照

长蠹科昆虫为破坏性最大的一类钻蛀性甲虫,为害贮粮、干根、树木、砍伐的木材、粗加工的木材,板条,家俱和竹制品。许多种类可以在美国定居下来。对该科昆虫的辨别极其重要。本检索表包括在植物检疫检验中截获的主要属和种以及有助于检... 详细信息

长蠹科昆虫为破坏性最大的一类钻蛀性甲虫,为害贮粮、干根、树木、砍伐的木材、粗加工的木材,板条,家俱和竹制品。许多种类可以在美国定居下来。对该科昆虫的辨别极其重要。本检索表包括在植物检疫检验中截获的主要属和种以及有助于检索的轮廓图,简要的分布和寄主资料。

关键词：长蠹科前胸背板植物检疫检验轮廓图贮粮刻点棒节胫节侧面观检索表