ZPW13—1000型微机控制自动配料系统通过技术鉴定

<正> 杭州市机械科学研究所为杭州市第二配合饲料厂研制的ZPW13—1000型微机控制自动配料系统,为年产2万吨级饲料厂配套。该系统采用微机集中控制及高精度全电子式配料等新技术,主要由大小二台电子秤、十三台双速螺旋加料机、一台微机控制器及强电控制部分组成。由于运用了微机灵活多变的特点及全动态控制等方法,系统计量准确,     

饲料厂中央控制系统的研究与虚拟系统的构建

饲料厂中央控制系统是饲料企业生产工艺流程的核心,是保证饲料产品各项指标的关键,文章以双秤配料生产工艺为模型,以labview软件为载体,构建出饲料厂中央控制室虚拟系统,对不同饲料生产工艺控制系统的结构和控制特点进行了研究,在ZK21H配料生产线自控系统的基础上,构建出双秤配料生产工艺的饲料厂中央控制虚拟系统,并对虚拟系统进行了测试,评估其应用的合理性和可操控性。     

微机技术在字盘配料秤改造中的应用

微机技术在字盘配料秤改造中的应用沈阳化工学院温静馨王桂珠任子真黑龙江省七星农场饲料厂潘振华吴非薛庆顺齐军配料秤是饲料加工的关键设备，它的精度高低直接影响着饲料的质量。因此，提高配料秤精度是饲料厂提高产品质量的重要环节。前些年建设的饲料厂有些采用了包裹...     

基于PLC和Wincc的饲料厂智能监控系统设计

<正>本文针对现代饲料厂对控制系统特别是对配控制的特殊要求,设计了基于PLC和Wincc的饲料智能监控系统,实现全厂设备的自动控制、状态显示报警记录和数据归档等功能,特别是应用自适应控算法实现连续配料控制,很好地解决了现代饲料厂全厂控制特别是精确配料的要求。     

微控机组的配料误差及对策

微控机组的配料误差及对策岳阳市建新饲料厂罗晓春当前很多饲料生产厂家使用了微机控制的饲料生产机组，基本实现了饲料生产自动化。在饲料生产过程中，使用微机会大大减少人为因素的影响，但也有一些不足之处需要我们去克服，下面笔者着重谈谈微控机组配料误差问题及解决...     

宜兴饲料厂工艺设备简介

<正> 江苏省宜兴饲料厂系万吨级饲料厂,由商业部武汉粮科所设计,1987年7月投产。总投资297万元,建筑总面积6263平方米。主车间高20.4米,四层,建筑面积922平方米。车间采取集中与分散相结合的控制方式,每层楼面设有电器控制柜,供操作人员就近控制和管理。二楼设有总控制室,集中控制和管理整个生产过程。配料和混合机由微机控制。一、粒料吸粮工艺流程和设备(见图1、表1) 该厂地处江南水乡,境内河流纵横,水运十分方便,原料船运较为经济,故工艺上采用码头吸     

一次饲料质量事故分析

青海省海东饲料厂是一个年单班产量5000吨，采用微机控制配料的配合饲料生产厂家，工艺、设备、技术是比较先进的，但在生产中却发生了一次质量事故，造成蛋鸡配合饲料中的粗蛋白偏低，CP仅为12.02％，用户用后，产蛋率、蛋重均降低，给养殖户造成了经济损失，进行了经济赔偿。我对这次产品质量事故的原因进行了调查分析，供饲料厂家借鉴。l事故原因调查得知影响配合饲料质量的因素较多，但主要因素有3个：1.1任意改变饲料配方饲料厂在按客户提供的饲料配方（见表1）加工生产中，适值菜籽饼缺乏，在无配料技术人员参与的情况下，主管生产的…     

PLC在配料控制系统中的应用

配料工序是饲料生产过程中非常重要的环节,其配料精度直接影响着饲料产品的质量。国内饲料厂前期投入使用的微机配料系统大部分是国外引进的。随着我国电脑工业的发展,微机配料系统已逐步国产化,我国许多科研、生产单位都投入到开发生产的行列。配料系统普遍存在的问题是:配料精度低,机电控制部分的可靠性差,缺少数据库管理生产以及对生产过程的实时动态监视。配料精度低的主要原因是电子秤系统的动态性范围小,而可靠性差主要是中间继电器和微机控制系统的可靠性低所致。针对实际问题,我们采用FX2N型可编程程序控制器来代替中间继电器和过…     

粗蛋白含量为什么降低了：一次饲料质量事故的原因分析

粗蛋白含量为什么降低了一次饲料质量事故的原因分析青海海东地区面粉厂熊欣青海省某饲料厂创建于１９９３年，是一个年单班产量五千吨，采用微机控制配料的配合饲料生产厂家。其工艺、设备、技术在青海省是比较先进的，但由于首次引用先进配料设备在生产管理方面缺乏经验...     

PZDC—1000型字盘配料秤加装QWP—A型微机控制通过鉴定

<正> 黑龙江省安达市饲料厂将原使用PZDC—1000型字盘配料秤,加装了机械工业部起重运输机械研究所研制的QWP—A型微机控制,代替了字盘控制部分,经半年试运行生产,于八六年十一月通过了鉴定。鉴定会是商业部饲料局委托黑龙江饲料公司主持的。与会代表进行了现场演示:配方输入、人工予检、自动配料、手动配料、打印输出、故障报警、与外部设备联锁、灯光指示、配方存贮等功能     

Personal computer word processing for veterinary article writing: selecting a suitable word processing program

Word processing makes the writing and altering of scientific articles faster, easier, and more accurate. Personal computers that are ideally suited to this use are now available. The major problem affecting the veterinarian who wishes to purchase a personal computer word processing system, is that of spending the time to acquire sufficient information in order to choose the computer and the programs that will be appropriate to his or her requirements. These will include the specialized word processing demands of scientific article writing and many other applications, as applicable. Despite this obstacle, the acquisition of a personal computer and a suitable word processing program, soon results in time saving. The use of the computer for many other tasks logically follows. An additional benefit is the understanding of computers, their abilities and their limitations--a decided benefit in the 1980s.     

利用微机进行兽医细菌鉴定的研究

用传统的方法进行细菌的鉴定分类,工作量大,而且完全靠人的记忆和查阅资料,大大影响了工作效率及鉴定的准确性。 本研究的基本设想在于将汉化微型计算机应用于兽医细菌鉴定。文章将与兽医有关的28属,4亚属中的119种细菌的68种特性搜集归纳后,输入微机,贮存于磁盘内,鉴定时计算机可根据要求自动进行比较。实验室中的具有一定文化程度的非计算机专业工作人员只须稍加训练既可使用本程序。如果输入数据足够,此程序的鉴定符合率达100％。     

论人事档案信息的网络化管理

随着计算机信息技术的发展，传统的人事档案管理已经不适应网络时代的要求，实现人事档案信息的网络化管理势在必行。本文将着重从技术角度阐述在保证档案信息安全的前提下，实现人事档案信息网络化建设的对策，着重介绍数据库技术、网络技术和网络安全机制等3个重要技术在人事档案信息网络化中的应用。     

Personal computer word processing for veterinary article writing: personal computers and printers

Word processing makes the writing and altering of scientific articles faster, easier, and more accurate. Personal computers that are ideally suited to this use are now available. Certain factors must be taken into consideration when a system is selected with word processing in mind. A small business computer or a suitable transportable computer, linked to a printer, provides all the hardware, or machinery, necessary. This, along with a sufficiently powerful word processing program, and all the essential accessories, can be purchased for between $2,300 and $6,000. The editors of all (with one uncertain) 29 clinical veterinary and medical journals surveyed will accept articles written by the dense dot matrix or near-correspondence quality printers that frequently accompany personal computers. The major problem affecting the veterinarian who wishes to purchase a personal computer word processing system is that of spending the time to acquire sufficient information in order to choose the computer and the programs that will be appropriate to his or her requirements. These will include the specialized word processing demands of scientific article writing and many other applications, as appropriate.     

A dynamic model for cost-benefit analyses of foot-and-mouth disease control strategies

An integrated model for the personal computer is presented, in which a variety of preventive and control strategies with respect to foot-and-mouth disease (FMD) in Dutch cattle and pig herds were examined economically. Special attention is given to the way in which losses due to export bans are determined. Export bans would occur as a result of an outbreak of FMD. Annual costs for the Netherlands would be reduced considerably if the yearly vaccinations were stopped. This conclusion holds even if more pessimistic values are used for some major uncertain input factors. The PC model is flexible with regard to input values, making it possible to fit different conditions.     

Investigations of the motivation underlying Norwegian dairy farmers' use of homoeopathy

Eighteen Norwegian dairy farmers were interviewed to examine their reasons for using homoeopathic treatments in managing their herds' health. Overall, they chose the treatments on the basis of factors related to their personal experience, considerations of individual animals and the framework for dairy production. For individual animals homoeopathy was used as an alternative to conventional veterinary treatment, but at the herd level it was used to complement it. The farmers' use of homoeopathic treatment for personal health problems and the experience of their colleagues with its use in dairy production were important factors motivating their initial use of homoeopathy. Other factors included a desire to decrease the use of antibacterial drugs, reduce costs and find alternatives when conventional veterinary medicine provided no effective treatment. In individual cases, the severity of disease, previous experience and the farmers' personal knowledge and resources were important. These factors parallel those found to influence the use of complementary and alternative therapies in human medicine. The lack of understanding and documentation of the effects of homoeopathic remedies was not important to the farmers, and they valued personal experience more highly than scientific evidence or the opposition to homoeopathy encountered within the veterinary profession.     

自适应模糊控制在配料过程中的研究与应用

针对工业配料过程中配料精度和速度相矛盾的难题,文中提出了一种专家系统、模糊控制结合自适应控制的新型控制方法。该方法将模糊控制宽范围快速调节和自适应精确调节的特点有机结合起来,当系统偏差大于某一设定值时,采用专家经验和模糊规则控制相结合的控制方法;当系统偏差小于设定值时采用自适应控制。实际应用表明,该方法比一般的模糊控制在系统精度和速度上均有所提高。     

A new method for recording and analysing evoked motor potentials from dogs

Normal values for motor conduction in the tibial, ulnar and fibular nerves of dogs have been determined using a new method for recording and analysing evoked motor potentials. The use of an alligator clip as a roving surface electrode for recording, and a personal computer to analyse the evoked potentials has facilitated faster and more reproducible motor conduction studies. Compound muscle action potential (CMAP) and motor nerve conduction velocity data are in good agreement with previous studies. Normal values for CMAP area, residual latency and proximal to distal ratios for CMAP area and amplitude are presented for the first time.     

Infection control practices and zoonotic disease risks among veterinarians in the United States

OBJECTIVE-To assess the knowledge and use of infection control practices (ICPs) among US veterinarians. DESIGN-Anonymous mail-out population survey. PROCEDURES-In 2005 a questionnaire was mailed to US small animal, large animal, and equine veterinarians who were randomly selected from the AVMA membership to assess precaution awareness (PA) and veterinarians' perceptions of zoonotic disease risks. Respondents were assigned a PA score (0 to 4) on the basis of their responses (higher scores representing higher stringency of ICPs); within a practice type, respondents' scores were categorized as being within the upper 25% or lower 75% of scores (high and low PA ranking, respectively). Characteristics associated with low PA rankings were assessed. RESULTS-Generally, respondents did not engage in protective behaviors or use personal protective equipment considered appropriate to protect against zoonotic disease transmission. Small animal and equine veterinarians employed in practices that had no written infection control policy were significantly more likely to have low PA ranking. Male gender was associated with low PA ranking among small animal and large animal veterinarians; equine practitioners not working in a teaching or referral hospital were more likely to have low PA ranking than equine practitioners working in such institutions. CONCLUSIONS AND CLINICAL RELEVANCE-Results indicated that most US veterinarians are not aware of appropriate personal protective equipment use and do not engage in practices that may help reduce zoonotic disease transmission. Gender differences may influence personal choices for ICPs. Provision of information and training on ICPs and establishment of written infection control policies could be effective means of improving ICPs in veterinary practices.     

Hendra virus in Queensland,Australia, during the winter of 2011: Veterinarians on the path to better management strategies

Following the emergence of Hendra virus (HeV), private veterinarians have had to adopt additional infection control strategies to manage this zoonosis. Between 1994 and 2010, seven people became infected with HeV, four fatally. All infected people were at a higher risk of exposure from contact with horses as they were either veterinary personnel, assisting veterinarians, or working in the horse industry. The management of emerging zoonoses is best approached from a One Health perspective as it benefits biosecurity as well as a public health, including the health of those most at risk, in this case private veterinarians. In 2011 we conducted a cross-sectional study of private veterinarians registered in Queensland and providing veterinary services to horses. The aim of this study was to gauge if participants had adopted recommendations for improved infection control, including the use of personal protective equipment (PPE), and the development of HeV specific management strategies during the winter of 2011. A majority of participants worked in practices that had a formal HeV management plan, mostly based on the perusal of official guidelines and an HeV field kit. The use of PPE increased as the health status of an equine patient decreased, demonstrating that many participants evaluated the risk of exposure to HeV appropriately; while others remained at risk of HeV infection by not using the appropriate PPE even when attending a sick horse. This study took place after Biosecurity Queensland had sent a comprehensive package about HeV management to all private veterinarians working in Queensland. However, those who had previous HeV experience through the management of suspected cases or had attended a HeV specific professional education programme in the previous 12 months were more likely to use PPE than those who had not. This may indicate that for private veterinarians in Queensland personal experience and face-to-face professional education sessions may be more effective in the improvement of HeV management than passive education via information packages. The role of different education pathways in the sustainable adoption of veterinary infection control measures should be further investigated.