电力企业考勤管理系统的设计与应用

电力企业考勤管理信息系统是基于B／S模式下的考勤管理系统,它可以对电力企业机构的职工的旷工、早退、加班、请假等进行信息化管理,对基本考勤数据分析汇总和考勤工资进行统一自动计算,提高考勤的科学化管理水平。     

Metabonomic analysis of hepatitis B virus-induced liver failure： identification of potential diagnostic biomarkers by fuzzy support vector machine

Hepatitis B virus （HBV）-induced liver failure is an emergent liver disease leading to high mortality. The severity of liver failure may be reflected by the profile of some metabolites. This study assessed the potential of using metabolites as biomarkers for liver failure by identifying metabolites with good discriminative performance for its phenotype. The serum samples from 24 HBV-indueed liver failure patients and 23 healthy volunteers were collected and analyzed by gas chromatography-mass spectrometry （GC-MS） to generate metabolite profiles. The 24 patients were further grouped into two classes according to the severity of liver failure. Twenty-five eommensal peaks in all metabolite profiles were extracted, and the relative area values of these peaks were used as features for each sample. Three algorithms, F-test, k-nearest neighbor （KNN） and fuzzy support vector machine （FSVM） combined with exhaustive search （ES）, were employed to identify a subset of metabolites （biomarkers） that best predict liver failure. Based on the achieved experimental dataset, 93.62% predictive accuracy by 6 features was selected with FSVM-ES and three key metabolites, glyeerie acid, cis-aeonitie acid and citric acid, are identified as potential diagnostic biomarkers.     

基于OPC和P2B的数据自动采集传输系统

概述了OPC和P2B技术的内涵,介绍了CITECT作为OPC客户端的设置方法,结合太钢信息化项目中数据自动采集的情况,详细说明了OPC和P2B技术的应用。     

对童氏“7.5B”计算及乙型水驱法的改进

研究了童宪章院士“7.5B”的准确性和适应性,指出了“7.5B”方法只适用于多个油田的统计计算,而不完全适应于单一油藏。从理论上推导了“7.5B’’的数学表达式,给出了一条准确计算该值的有效途径。对童氏水油比与采出程度关系乙型水驱法及采出程度与含水关系图版作了改进。     

鳞翅目昆虫细胞抗菌肽的诱导、筛选及抗菌活性的研究

选取3种离体培养的鳞翅目昆虫细胞系,采用热灭活的大肠杆菌诱导的方法,诱导其产生抗菌肽,并进行抗菌活性检测、诱导动力学研究及Tricine SDS-聚丙烯酰胺凝胶电泳检测分析．结果筛选到1株诱导抗菌活性较高的昆虫细胞系——粉纹夜蛾BTI-Tn-5B1细胞系,并发现该粉纹夜蛾5B1细胞在诱导后16h产生了1个分子量大约为8000的抗菌肽,抗菌活性检测表明其对金黄色葡萄球菌（Sta phylococcus aureus）、大肠杆菌（Escherichia coli K12D31）、德氏卑沙门氏菌（Salmonella derby）均有不同程度的抑制作用,其中特别是对革兰氏阴性菌——大肠杆菌K12D31和德氏卑沙门氏菌有较强的抑菌活性．     

The start-up of biohydrogen-producing process by bioaugmentation in the EGSB reactor

Expanded granular sludge bed (EGSB) reactor and bioaugmentation were employed to investigate biohydrogen production with molasses wastewater. The start-up experiments consisted of two stages. In the first stage (0～24d) seeded with activated sludge, the butyric acid type-fermentation formed when the initial expanding rate, organic loading rate (OLR), the initial redox potential (ORP) and hydraulic retention time (HRT) were 10%, 10.0 kg COD/(m3·d), - 215 mV and 6.7 h, respectively. At the beginning of the second stage on day 25, the novel hydrogen-producing fermentative bacterial strain B49 (AF481148 in EMBL) were inoculated into the reactor under the condition of OLR 16. 0 kg COD/(m3·d), ORP and HRT about - 139 mV and 6.7 h, respectively, and then the reaction system transformed to ethanol-type fermentation gradually with the increase in OLR. When OLR, ORP and HRT were about 94.3 kg COD/(m3·d), -250 mV and 1.7 h, respectively, the system achieved the maximum hydrogen-producing rate of 282.6 mL H2/L reactor· h and hydrogen percentage of 51%～53% in the biogas.     

基于B/S模式的网络考试系统的研究

主要介绍基于B/S模式的网络考试系统的设计原理和体系结构,并且根据研究的结果开发出了一个通用的考试系统工具。本文首先介绍了软件开发的基础,其次分析了该系统的功能,然后详细介绍了该系统中的主要模块的设计与实现。     

基于B/S模式的广域网多媒体监控系统的设计与实现

以作者自行开发的广域网多媒体监控系统为例,探讨了适用于ADSL和宽带网络的动态IP解决方法,讨论了基于B／S模式的网络多媒体监控系统设计和技术实现方案。     

PuH2基态分子体系的分析势能函数与反应动力学

在Pu原子的相对论有效原子实势近似下,用密度泛函B3LYP方法计算得到PuH2分子基态(X7A1)的平衡结构为R(PuH)=0.2169nm,∠HPuH=160.34°,离解能为3.0045 eV,谐振频率为293.4140,1209.2715和1262.2149cm-1.用多体展式理论得到PuH2基态分子的分析势能函数,根据该分析势能函数,用准经典方法研究Pu(7Fg)+H2(X1∑+g,v=J=0)的分子反应动力学,结果表明Pu(7Fg)与H2(X1∑g+,0,0)碰撞是弹性碰撞.     

UO分子结构与势能函数及基态分子热力学性质

在U的相对论有效原子实势近似和O原子6 311G 全电子基函数下,用密度泛函B3LYP方法计算得到UO分子的结构与势能函数、力常数与光谱数据.同时计算得到UO基态X7∑分子在298K时的标准生成热力学函数ΔfH0、ΔS0和ΔfG0,分别为490.432kJ/mol,106.204J/mol·K和458.768kJ/mol.