基于Delphi的网络平台的教材管理系统设计与实现

本文根据学校教材管理的实际情况,结合Delphi开发和数据库技术,在传统管理手段基础上,以Windows XP操作系统、SQL SERVER 2000数据库为平台,实现了针对大学的教材管理而研发的管理系统.在程序设计方面,通过对学校教材录入发放,学生领书业务进行需求调研、归纳、分析,以教材录入领取主要业务流程为主线,并结合组织结构,对系统及数据库的总体设计的基本思想进行了论证。并利用Delphi 7.0数据库开发工具,实现了教材管理系统的开发,它包括教材管理、班级管理、计划管理、教材入库出库管理。此系统还包括符合系统使用人员思维观念和使用习惯的条件查询。通过该系统的应用,加速了学校实现教材管理现代化的进程,提高了现有教材的共享程度和工作人员的工作效率,对传统手工资料的存贮进行了革新,提高了教材管理的决策水平。     

英语课过程化教学管理系统的设计与实现

笔者介绍了英语过程化教学管理系统的开发背景和意义,应用三层架构基于Microsoft.NET Framework提出了系统的实现解决方案,分析并完成了系统功能设计和数据库设计,重点阐述了如何使用.NET框架进行敏捷开发,对于类似数据库管理系统开发有一定的参考价值。     

基于数据库的经编机故障诊断与查询系统开发

针对经编车间生产情况复杂，无法及时获取机器运行维护状态的问题，结合实际需要，采用B/S开发结构、SQL Server数据库、C#编程语言、ASP.NET Web应用程序等软件，开发一款基于SQL数据库的经编机故障诊断与查询系统。重点论述该系统框架结构、数据库建立与条件约束、Web应用端开发与设计，并对系统所使用关键技术进行详细阐述。系统基于数据库和互联网，可满足企业管理者对经编机运行状况的实时查询与监控，对机器故障信息的诊断和查询，为企业生产提供便利，对管理者做决策具有重要意义。     

五金信息平台的构建

系统开发工具及系统架构模式 网站平台开发采用微软的Microsoft Visual Studio．NET进行开发，使用C#语言，数据库采用SQL SERVER2000，系统为B／S架构的WEBFORM应用程序。     

基于FireDAC开发DataSnap三层数据库应用

服务器与数据库之间的连接直接影响了DataSnap三层数据库应用系统的传输效率。现阶段主流的连接技术为ADO与dbExpress。但是开发过程中存在着数据引擎兼容性不高、封装繁琐、连接逻辑复杂等问题。因此提出使用FireDAC数据引擎开发DataSnap三层C/S结构的数据库应用。文章根据在Delphixe10平台的开发过程得出FireDAC数据引擎具有连接逻辑简单,数据库兼容性强等优点,更适合用于开发DataSnap三层数据库应用。     

SQL Server和Access在使用SQL语言中的差异研究

SQL Server和Access均为MIS系统开发中应用较多的数据库,SQL Server为网络数据库,Access为单机版数据库,二者常在MIS系统中配合使用。而SQL语言则是数据库开发中必不可少的一部分,因此,研究这两种数据库在SQL语言上的差异在MIS系统开发中具有实际的意义。     

新疆特色美食网的构建

本论文是基于新疆特色美食的搜集和整理，利用网络途径对新疆特色关食进行搜集推广，让更多人了解新疆特色美食。其开发主要包括后台数据库的建立、后台管理以及前台页面的Web设计。本系统开发基于B／S架构，使用Java作为开发语言、MySQL为数据库。利用其提供的各种组件，在短时间内建立数据库，结合MVC分层思想，不断改进，直到功能基本实现的可行系统。本文的研究在一定程度上借鉴了中华美食网的经验成果，系统的最终目的是通过为美食网提供互动交流平台，提高网站的知名度和访问量，从而为广大的美食爱好者提供更多的美食介绍及健康饮食。     

基于MS ACCESS的甘蔗杂交数据库管理系统

以MS Access为数据库平台,建立了甘蔗杂交数据库管理系统。系统含花穗录入、组合选配、杂交记录、杂交完成、计划进度、种植计划、计划管理、计划外花穗、种子信息、花穗分发、报表等功能模块。可根据现存花穗与杂交计划自动匹配组合,对不能满足自动匹配的花穗进行手工选配,组合选配灵活、方便、快速。系统将条形码技术与数据库程序结...     

浅谈新形势下的计划管理

为了使棉纺企业能适应市场需要的变化，降低成本，提高资金周转及经济效益，论述了全面计划管理的主要特征及生产过程的计划管理与控制，分析了实施全面计划管理的重要性，提出了生产管理中的控制概念，从在制品储备控制和减少库存控制两个方面说明控制工作对企业经济效益的重要性。指出全面计划管理具有全员性、全面性、全局性、全效益性的特征，企业须加强内部管理，合理控制生产过程及制品储备，减少资金占用及库存等，才能促进企业发展。     

纺织企业生产计划信息化管理的探讨

利用计算机进行纺织企业生产计划管理，特别是确定有经济效益的生产品种，并确定生产规模，计算使用的机台、流水线、各工序间的协调。利用计算机系统核算最佳流动资金的投放、各部门的衔接，以产生最大的经济效益。     

Textural Properties of Cold-set Gels Induced from Heat-denatured Whey Protein Isolates

A 9% whey protein (WP) isolate solution at pH 7.0 was heat-denatured at 80°C for 30 min. Size-exclusion HPLC showed that native WP formed soluble aggregates after heat-treatment. Additions of CaCl2 (10–40 mM), NaCl (50–400 mM) or glucono-delta-lactone (GDL, 0.4–2.0%, w/v) or hydrolysis by a protease from Bacillus licheniformis caused gelation of the denatured solution at 45°C. Textural parameters, hardness, adhesiveness, and cohesiveness of the gels so formed changed markedly with concentration of added salts or pH by added GDL. Maximum gel hardness occurred at 200 mM NaCl or pH 4.7. Increasing CaCl2 concentration continuously increased gel hardness. Generally, GDL-induced gels were harder than salt-induced gels, and much harder than the protease-induced gel.     

Occurrence of bisphenol-F-diglycidyl ether (BFDGE) in fish canned in oil

The levels of bisphenol-F-diglycidyl ether (BFDGE) were quantified as part of a European survey on the migration of residues of epoxy resins into oil from canned fish. The contents of BFDGE in cans, lids and fish collected from all 15 Member States of the European Union and Switzerland were analysed in 382 samples. Cans and lids were separately extracted with acetonitrile. The extraction from fish was carried out with hexane followed by re-extraction with acetonitrile. The analysis was performed by reverse phase HPL C with fluorescence detection. BFDGE could be detected in 12% of the fish, 24% of the cans and 18% of the lids. Only 3% of the fish contained BFDGE in concentrations considerably above 1mg/kg. In addition to the presented data, a comparison was made with the levels of BADGE (bisphenol-A-diglycidyl ether)analysed in the same products in the context of a previous study.     

Contribution of European research to risk analysis

The European Commission's, Quality of Life Research Programme, Key Action 1—Health, Food & Nutrition is mission-oriented and aims, amongst other things, at providing a healthy, safe and high-quality food supply leading to reinforced consumer confidence in the safety of European food. Its objectives also include the enhancing of the competitiveness of the European food supply. Key Action 1 is currently supporting a number of different types of European collaborative projects in the area of risk analysis. The objectives of these projects range from the development and validation of prevention strategies including the reduction of consumers risks; development and validation of new modelling approaches; harmonization of risk assessment principles, methodologies, and terminology; standardization of methods and systems used for the safety evaluation of transgenic food; providing of tools for the evaluation of human viral contamination of shellfish and quality control; new methodologies for assessing the potential of unintended effects of genetically modified (genetically modified) foods; development of a risk assessment model for Cryptosporidium parvum related to the food and water industries; to the development of a communication platform for genetically modified organism, producers, retailers, regulatory authorities and consumer groups to improve safety assessment procedures, risk management strategies and risk communication; development and validation of new methods for safety testing of transgenic food; evaluation of the safety and efficacy of iron supplementation in pregnant women; evaluation of the potential cancer-preventing activity of pro- and pre-biotic ('synbiotic') combinations in human volunteers. An overview of these projects is presented here.     

低温带皮菜籽粕微粉的不同粒级部分的功能特性

为研究低温带皮菜籽粕微粉的不同粒级部分的功能特性,以经低温脱脂的带皮菜籽粕为原料,经微粉碎后筛分成212~425μm、150~212μm和106~150μm的3个不同粒级的微粉样品,检测这些样品的吸水性、吸油性、乳化性和乳化稳定性、蛋白质体外消化率。结果表明:1 3个不同粒级的微粉样品之间的粗纤维含量存在显著差异,表明三者的结构组成成分有一定差异。23个微粉样品的乳化活性和乳化稳定性随粒度级别的减小而显著增加(P0.01)。33个微粉样品的蛋白质体外消化率随粒度级别的减小而显著增加(P0.01)。4不同粒级带皮菜籽粕微粉样品的吸水性与吸油性受其结构组成物质不同和粒度的双重影响,与粒度的相关性不明显。     

Microbiology of food taints

Fresh and processed foods are often spoilt by the presence of undesirable flavours and odours caused by microbial action. The aim of this paper is to review the current knowledge of microbiologically induced taints that occur in a wide range of foodstuffs, including meats, poultry, fish, crustaceans, milk, dairy products, fruits, vegetables, cereals and cereal products. Examples have been chosen where the compounds responsible for the taint have been identified and sufficient data obtained to demonstrate the involvement of microorganisms. However, in some cases the full identity of the causative organism may not have been elucidated. The types of microorganisms covered by this review include bacteria, fungi, yeasts, actinomycetes and cyanobacteria. Although cyanobacteria do not in general infect foods, their presence in aqueous systems and water supplies can lead to off-flavours in aquatic organisms and processed foodstuffs. Several examples of each of these processes are discussed. Wherever possible, the likely biosynthetic pathway used by the microorganism to produce the offending compound in a foodstuff is indicated.     

Analysis for organic residues from aids to polymerization used to make plastics intended for food contact

Polymers intended for food contact use have been analysed for organic residues which could be attributed to a range of substances employed as polymerization aids (e.g. initiators and catalysts). A wide range of polymers was extracted with solvents and the extracts analysed by gas chromatography-mass spectrometry (GC-MS). The overwhelming majority of substances identified were not derived from aids to polymerization but were oligomers, additives and adventitious contaminants. However, a small number of substances were identified as initiator residues. These included tetramethylsuccinonitrile (TMSN) which was observed in two polymers and it derived from recombination of two azobisisobutyronitrile (AIBN) initiator radicals. Methyl benzoate, benzoic acid, biphenyl and phenyl benzoate were detected in one poly(methyl methacrylate) sample and in two polyvinylchlorides and they are thought to be derived from benzoyl peroxide initiator. TMSN was subsequently targeted for analysis of poly-(methyl methacrylate) plastics using proton nuclear magnetic resonance spectrometry (¹     

Tests of potential functional barriers for laminated multilayer food packages. Part II: Medium molecular weight permeants

Experiments were performed to characterize the kinetics of the permeation of different medium molecular weight model permeants: bisphenol A, warfarin and anthracene, from liquid paraffin, through a surrogate potential functional barrier (25 microns-thick orientated polypropylene--OPP) into the food simulants olive oil and 3% (w/v) acetic acid. The characterization of permeation kinetics generally observed the permeation models previously reported to explain the experimental permeation results obtained for a low molecular weight group of model permeants. In general, the model permeants exhibited behaviour consistent with their relative molecular weights with respect to (a) the time taken to attain steady-state permeation into the food simulant in which they were more soluble, (b) their subsequent steady-state permeation rates, and (c) their partition between liquid paraffin and the OPP membrane.     

The development of reference materials for paralytic shellfish poisoning toxins in lyophilized mussel. I: Interlaboratory studies of methods of analysis

This paper describes the first part of a project undertaken to develop mussel reference materials for Paralytic Shellfish Poisoning (PSP) toxins. Two interlaboratory studies were undertaken to investigate the performance of the analytical methodology for several PSP toxins, in particular saxitoxin (STX) and decarbamoyl-saxitoxin (dc-STX) in lyophilized mussels, and to set criteria for the acceptance of results to be applied during the second part of the project: the certification exercise. In the first study, 18 laboratories were asked to measure STX and dc-STX in rehydrated lyophilized mussel material and to identify as many other PSP toxins as possible with a method of their choice. In the second interlaboratory study, 15 laboratories were additionally asked to determine quantitatively STX and dc-STX in rehydrated lyophilized mussel and in a saxitoxin-enriched mussel material. The first study revealed that three out of four postcolumn derivatization methods and one pre-column derivatization method sufficed in principle to determine STX and dc-STX. Most participants (13 of 18) obtained acceptable calibration curves and recoveries. Saxitoxin was hardly detected in the rehydrated lyophilized mussels and results obtained for dc-STX yielded a CV of 58% at a mass fraction of 1.86 mg/kg. Most participants (14 out of 18) identified gonyautoxin-5 (GTX-5) in a hydrolysed extract provided. The first study led to provisional criteria for linearity, recovery and separation. The second study revealed that 6 out of 15 laboratories were able to meet these criteria. Results obtained for dc-STX yielded a CV of 19% at a mass fraction of 3.49mg/kg. Results obtained for STX in the saxitoxin-enriched material yielded a CV of 19% at a mass fraction of 0.34mg/kg. Saxitoxin could not be detected in the PSP-positive material. Hydrolysis was useful to confirm the identity of GTX5 and provided indicative information about C1 and C2 toxins in the PSP-positive material. The methods used in the second interlaboratory study showed sufficiently consistent analysis results to undertake a certification exercise to assign certified values for STX and dc-STX in lyophilized mussel.     

The Ministry of Environmental Protection Issued "Feasible Technology Guidelines for Pollution Prevention and Control in Wood Pulping Process of the Paper Industry (Trial)" and Two Other Guiding Technical Documents

On December 27t＂, 2013, the Ministry of Environmenta Protection announced that, in order to implement ＂The Environmental Protection Law of the People＇ s Republic of China＂, improve the working system in environmenta protection technologies, and promote technologica advancement in pollution prevention, the Ministry of Environmental Protection sponsored the formulation of three guiding technical documents including ＂Feasible Technology Guidelines for Pollution Prevention and Contro n Wood Pulping Process of the Paper Industry （Trial）＂     

1~(st) Intelli-Tissue~ EcoEc Tissue Machine Supplied by PMP Group Successfully Put into Operation in China

正On April 29th,2014,Intelli-Tissue EcoEc tissue machine supplied by PMP Group successfully put into operation at Hebei Xuesong Paper Co.,Ltd.,this is the first such kind of paper machine of PMP Group in China.