兔病毒性出血症病毒高免血清的制备与应用效果

以兔病毒性出血症病毒组织灭活疫苗免疫家兔，经五次免疫之后，抗体效价可达12log2以上，采集兔血清，以此治疗攻毒兔，结果大部分兔都存活，临床应用效果表明：以此血清治疗自然感染兔病毒性出血症病毒的发病兔，治愈率达80％以上。     

Investigation of Cervical Patency and Uterine Appearance in Domestic Cats by Fluoroscopy and Scintigraphy

The cervical patency of six domestic female cats was monitored under sedation by infusion of contrast medium (Omnipaque) into the cranial vagina during early oestrus, mid‐oestrus, late oestrus and interoestrus or a radiopharmaceutical (^99mTc‐HSA) during mid‐ and interoestrus in a non‐ovulatory oestrous cycle. The transport of the contrast medium or the radiopharmaceutical through the cervix and within the uterine horns was observed under fluoroscopy and with the aid of scintigraphy. In three of the queens, transcervical transport of contrast medium was demonstrated in all stages of oestrus, in one queen during mid‐oestrus, late oestrus and 1 day after oestrus, and in two queens only during late oestrus. The relations between the cervical patency to the contrast medium and the oestrous behaviour, cornification of the vaginal cells and the serum oestradiol‐17β concentration were evaluated, and a relationship was found between the cervical patency and the degree of vaginal cornification. Transcervical transport of the radiopharmaceutical was observed in three queens during mid‐oestrus. When the cervix was open, hysterography under a fluoroscope and hysteroscintigraphy were performed. The fluoroscopic and scintigraphic recordings revealed the patterns of the uterine contractions during oestrus in both ascending and descending directions, and the movement of the uterine contents back and forth between the uterine horns. The hysterograms were classified according to the shape of the uterine horns and the appearance of the endometrial lining. Spiral‐shaped uterine horns with a smooth inner contour were observed in two queens, and a corkscrew appearance with irregular filling defects in the uterine lumen was shown in two queens that had developed subclinical cystic endometrial hyperplasia. These findings demonstrated that fluids or particles deposited in the cranial vagina of the cat can be transported into the uterus during some stages of the oestrous cycle. The fluoroscopic and scintigraphic techniques developed in this study may be further modified to permit more detailed studies of uterine contractile patterns and sperm transport in the feline female reproductive tract. Hysterography proved useful to diagnose uterine disease. The information on cervical patency is of value also for the development of techniques for artificial insemination in this species, and should be studied also in the ovulatory cycle.     

河南省食用菌科技推广存在的问题及对策

综合分析了河南省食有菌科技推广中存在的生产经营缺乏宏观引导，科技推广存在自发性和盲目性，体制不协调和食用菌生产本身的不可控因素较多等问题，提出了加强宏观引导，微观调控，建立健全食用菌行业管理，食用菌龙头企业建设，开发建设规模生产基地等具体措施，为食用菌的产业化大发展提供了参考依据。     

一种估测亚麻出麻率的简便方法

统计分析显示亚麻茎中段的出麻率与单株出麻率相关极显著，可以在育种的单株选择过程中，利用茎中段的出麻率来快速估算单株出麻率，以减轻工作量，提高工作效率。     

屠宰生猪的心，肝，肺检验初探

宰后检验是整个肉品卫生检验工作中的重要环节，是宰前检疫的继续和补充。“四部”制定的《肉品卫生检验试行规程》和国家国内贸易局制定的《肉品品质检验规程》都明确规定必须进行心、肝、肺检验，它是宰后检验的重要组成部分和主要着眼点之一。这些卖质器官的检验可以作为我们综合判检的主要依据。另外，我国广大人民群众比较喜食内脏器官，这更要求我们对心、肝、肺进行严格的检验，防止食肉中毒，防止畜禽疫病传播，防止人畜共患传染病。１　心脏ｌ．１心脏检验　四部规程规定“检查心包及心肌并沿动脉管剖检心室及心内膜，同时注意血液…     

干细胞与肿瘤研究进展

肿瘤是危害人类健康的恶性疾病,近年来越来越多证据显示肿瘤与干细胞有着密切的关系。肿瘤可能是干细胞在异常微环境中差异分化的结果。它与正常干细胞有相似的表面标志和生化特点。在此,综述了干细胞与肿瘤发生的关系及干细胞工程在肿瘤治疗中的应用前景,旨在为肿瘤发生发育的研究及干细胞在肿瘤治疗方面的应用提供理论依据。     

酸化剂、益生素和寡糖在断奶仔猪饲料中的应用研究进展

1酸化剂、益生素和寡糖在断奶仔猪饲料中的应用1.1酸化剂在断奶仔猪饲料中的应用目前,养猪生产中普遍存在的一个难题就是仔猪断奶后消化机能紊乱,导致生长受阻甚至死亡,原因之一是仔猪不能分泌足够的胃酸,胃中的pH值多在4.2以上;加上一些饲料原料的强缓冲能力(Bolduan,等,1988)     

西南交通大学郫县新校区绿化环境设计中交流氛围的营造

现代化教育的发展使得高等学校的功能不断地扩展，对内对外交流与合作的功能正在日益显现。这要求在高校校园绿化环境设计中体现和满足这一功能。提出了在绿化环境设计中营造交流氛围的原则，并在西南交通大学郫县新校区绿化环境设计中对交流氛围的营造作了初步探索和实践。     

中国平背树螽属两新种(直翅目:螽斯科:树螽亚科)

描述了平背树螽属2新种,定名为双刺平背树螽(Isopsera bicuspidota Yang etKang)和广西平背树螽(I.guangziensis Yang et Kang)。     

污水污物潜水旋流泵性能及设计方法试验研究

对影响潜水旋流泵性能的6个主要过流件几何参数进行了试验研究，初步掌握了旋流泵叶轮及泵体主要几何尺寸对性能影响的规律。在分析16种优秀水力模型的基础上，计算出叶轮D2及b2函数回归方程式，并用设计实例进行检验，样机效率比国内外同类产品提高3％左右。