Calculation Method of Hydraulic Characteristics for Direct-Return Chilled Water System

In order to optimize design and operation, it is necessary to calculate accurately hydraulic characteristics large central air-conditioning systems. Simplified Model can not be applied to hydraulic calculation of large pipe network topological structure for its large calculation error. Taking into account the regulating characteristics of terminal branch temperature regulating valve, a direct-return chilled water system is studied, an accurate mathematical model of pipe network hydraulic characteristics has been established and a computer logic algorithm with virtual flow has been given. A direct-return pipe network with ten AHU branches is used as simulation calculation object, the pipe network supply-return water pressure difference is calculated, and also the temperature regulating valve opening and actual flow of each branch are calculated in the condition of different supply-return water pressure difference. The calculated results accord with the natural characteristics of high pressure difference unbalanced for direct-return pipe network. The calculation method can ensure calculation convergence.     

土木工程类研究生创新能力培养研究

根据工科类研究生培养工作的具体体会,在研究生科研创新意识、创新环境培育建设、创新过程引导方法、创新的传承和创新的目标管理等几个方面进行了探讨,并细致的阐述相关的方法,对推动研究生科研创新能力的提高有一定的借鉴价值。     

Assessment of the IgG index in dogs by indirect immunoenzimatic assays as diagnostic tool for inflammatory diseases of central nervous system

The IgG index measures the intrathecal immunoglobulin production and it is a useful tool for diagnosis of inflammatory diseases involving the central nervous system. This index is based on the precise quantification of albumin and IgG in canine cerebrospinal fluid and serum. Here, we report the development of an indirect competitive ELISAs for the detection of both antigens. Thirty-two dogs were included in this study, divided into three experimental groups. Group A was composed of 22 healthy animals, as determined by standard clinical examination. In group B, six animals, presented neurological pathologies associated with endogenous IgG production and, in group C four animals presented neurological diseases or symptoms not associated with intrathecal IgG production. Cerebrospinal fluid and serum samples were obtained from these animals. As expected, by using the indirect ELISAs proposed here, the IgG indexes obtained in healthy animals (A) were 0.371+/-0.252 (SD). In B and C, the values (3.002+/-1.897; 0.36+/-0.306, respectively), were in agreement with the pathologic conditions of the individuals in each group. Thus, the immunometric competition ELISA methods proposed here allow the discrimination of abnormal intrathecal IgG production, in a variety of inflammatory pathologic conditions of the central nervous system.     

Development Of A Scoring System For The Veterinary Trauma Patient

An animal trauma triage (ATT) scoring system was devised to provide stratification of veterinary trauma patient populations based upon severity of injury. A retrospective population of 101 trauma patients and a prospective population of 88 patients were used to evaluate the predictive power of the ATT scoring system for survival seven days after initial presentation of the emergency service. In Both groups, the mean ATT score for survivors was significantly lower than the mean ATT score for non-survivors. In a logistic regression mode, the ATT score was found to be a significant predictor of the likelihood of survival seven days after initial presentation for both populartions. Each point increase in the ATT score resulted in a 2.3–2.6 times decreased likelihood of survival. The ATT scoring system is a useful objective classification scheme for predicting the likelihood to survive a traumatic incident and can serve as prototype for severity of injuroy scoring systems for the veterinary trauma patient.     

基于B/S结构的家蚕育种与种性维持信息管理系统

对家蚕育种亲本及其新品种性状数据档案实行信息化管理,可在家蚕育种和品种的种性维持过程中自动实现完整的信息采集、计算、调用、选择等功能。开发了一个基于B/S结构的家蚕育种与种性维持信息管理系统,主要包括品种管理、计划任务管理、饲育信息管理、蚕茧信息管理、选种信息管理、选优信息管理等功能模块。选种信息管理模块的运行过程是通过电子天平称量蚕茧质量,然后根据计算模型自动进行数据信息处理与统计分析实施选择。用户可以方便地通过网络访问该系统,实现家蚕新品种选育及种性维持工作的自动化。     

利用反向遗传技术拯救H9N2重组病毒

为研制高效特异的H9N2亚型AI疫苗,选取我国具有代表性的毒株A/chicken/Shanghai/10/01(H9N2)(简称SH10),以12质粒系统为基础,利用反向遗传操作技术构建了1株表面基因由SH10提供、内部基因由12质粒系统提供的重组病毒SH/PR8,为新型疫苗的研制提供了新的毒株。     

基于GIS的澳洲坚果在云南适宜种植区划分研究

为促进云南省澳洲坚果产业持续发展,利用GIS技术将7个气候要素和DEM网格图叠加分析,划分澳洲坚果在云南种植的最适宜、次适宜和不适宜区。结果表明,最适宜区面积57 939 km²,占云南省国土面积的14.7%;次适宜区面积63 977 km²,占云南省国土面积的16.2%。澳洲坚果可种植区域为文山州、红河州、普洱市、德宏州、临沧市、保山市、西双版纳州及玉溪南部地区,主要为云南热带、亚热带地区的河谷地带、低海拔山地区域。     

独立学院专科人才培养模式探析——从武汉理工大学华夏学院专科人才培养方式分析

发展独立学院,是我国高等教育作为一种混合公共产品的改革与发展过程中的一项重大探索。在新形势下指导独立学院的建设,就是要结合独立学院自身建设和发展的特点,坚持以质量为本的原则,务求以教育教学改革的创新解决独立学院建设与发展过程中遇到的一系列问题和困难。文中以武汉理工大学华夏学院专科人才的培养方式为个案,尝试探索一条新形势下独立学院培养技术型、应用型、务实型专科人才的道路。     

中国河西走廊草地农业的基本格局和它的系统相悖─—草原退化的机理初探─—

河西走廊的草地资源位于西北荒漠的大背景中，由山地、荒漠和绿洲三个子系统构成，其中荒漠子系统居主导地位，具有先天的脆弱性。它们在人为干预下，在自然生态系统的农业化过程中，发生了山地一绿洲一荒漠组成的耦合农业系统。由于耦合不够完善，它所固有的相悖因素未能有效控制，形成涵有系列相悖因子群的系统相悖。主要表现为时间相悖，空间相悖和种间相悖。三者互相影响，但时间相悖起主导作用，使系统的生态危机加剧。它通常表现为草原退化。对草地农业生态系统的自由能的调控，保持自由能的积累和输出基本相当，是防止草原退化的根本出路。草原退化是草地对于草食动物压迫的对策系统和动物对于草地负荷行为的对策系统的综合反映。放牧程度可以作为草原退化过程的向量系统，但不是草原退化的本质。     

禁牧休牧监管立法的分析与探讨

禁牧休牧已成为保护和培育生态植被的一种主要方式,是遏制草原荒漠化的有效手段。相对于禁牧休牧的制度需求,其监管立法却存在诸多问题需要完善,本文从立法层级、监管体制、法律责任等方面分析了禁牧休牧监管立法中存在的问题,着重论述其完善途径,并提出了相应的立法建议。