犬在多领域搜索气味的应用

<正>众多的科学研究和实践都证明了犬在气味搜索方面的非凡能力,尤其在复杂的气味环境中,犬对于单个气味因子的辨别能力超乎想像,以此为基础发展而来的刑侦鉴别犬、缉毒犬、检疫犬、搜救犬等工作犬种已被     

抗球虫药物靶标筛选的研究进展

目前,药物防治仍然是防治球虫病的主要手段,随着抗球虫药物的使用,耐药性的产生越来越严重,迫切需要抗球虫新药的研发,发现和选择合适的药物靶点是药物开发的前提,也是药物筛选及药物定向合成的关键因素。文章就近年来抗球虫药物靶标筛选的研究进展作一简单回顾。     

Searching for ivermectin resistance in Dutch horses

A study was conducted to evaluate the occurrence of resistance against, in particular, ivermectin in cyathostomins in the Netherlands. Seventy horse farms were visited between October 2007 and November 2009. In initial screening, faecal samples were collected 2 weeks after deworming with either ivermectin, moxidectin or doramectin. Pooled faecal samples from a maximum of 10 horses were examined for worm eggs using a modified McMaster technique and for worm larvae after faecal larval cultures. In total 931 horses were involved. On 15 of 70 farms eggs and/or larvae were found. On 8 of these 15 farms a FECRT with ivermectin was performed on 43 horses. Efficacy of ivermectin against cyathostomins of 93% was found in one animal on one farm. Additionally, the strategies and efforts of the horse owners to control cyathostomins, as well as risk factors for the development of macrocyclic lactone resistance were evaluated with a questionnaire. Strikingly, many responders indicated that the control of cyathostomins in horses is achieved through very frequent deworming. Fourteen percent of these owners deworm seven times per year or more. On 34% of the 70 farms treatment was repeated within the Egg Reappearance Period of a product.     

朝鲜丰山犬的训练探索

朝鲜丰山犬被称为朝鲜国犬,自2001年中国首次正式从朝鲜引进一对丰山犬以来,公安部昆明警犬基地一直致力于丰山犬的训练研究,在前一阶段取得了一定的成果.但缘于交流的缺失,关于该犬种的资料非常稀缺,国内外至今尚无任何关于朝鲜丰山犬训练的书面记录.     

图文分解版面分析过程中的智能性应用和体现

图文分解版面分析方法是受二分法思想的启发而做进一步的发挥运用,其体现的思想实质是一致的:即分步骤将复杂问题分解为简单问题。就本文所研究版面分析而言是将所获得的图像信息中按照图像、文字两类模式特征而采用不同的处理手段,即一般说对图像区域和文本区域采用不同的合并手段,而正是由于在这并行的合并过程中自始至终伴随着合并风险的问题,故如何让系统自动判别合并风险的存在即如何体现智能性应用则为本文研究的重点。     

Searching for veterinary evidence: A guide for equine professionals

There is more and more online information available at our fingertips, but how do we efficiently identify and extract relevant information for good clinical decision making? The aim of this review article is to provide equine professionals with the building blocks to be able to develop skills for expertly navigating the scientific literature in a timely fashion. This includes what key questions you need to ask before starting (why am I searching and how much time do I have), where the best places are to search and how to find freely available legal copies of papers (articles, conference proceedings, book chapters and dissertations). Additionally, how to best conduct an information search and what you get from searches of varying comprehensiveness. Finally, this article will cover where to find databases of research syntheses where others have already carried out the hard work for you and some advanced techniques which are likely to save you substantial amounts of time. This article draws together expertise from a panel of veterinary clinicians, nurses and technicians, information specialists and librarians and clinical researchers.     

Staying current by searching the veterinary literature

The body of knowledge in veterinary medicine and the biomedical sciences continues to grow logarithmically, and learning about new developments in veterinary medicine requires successful navigation of recently published literature worldwide. This article examines how veterinarians can use different types of automated services from databases and publishers to search the current and past literature, access articles, and manage references that are found.     

Maternal recognition of pregnancy--a review of the literature

A review of the literature concerning the endocrinological changes around early pregnancy in the domestic animals is presented. During this period the presence of the blastocyst must be recognized by the mother ("Maternal Recognition of Pregnancy") leading to a rescue and maintenance of the corpus luteum function. Several hormones are involved in these processes and the initial hormonal changes are dependent on a viable blastocyst. The key event is its control of the prostaglandin synthetizing system.