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.     

极具开发价值的百合产品

百合精粉的制作可以采用自然干燥后，粉碎、旋风分离而制成，但该产品色泽焦黄，脱离了百合原有本色；如果采用鲜百合打浆，均质后喷雾干燥的方法，产品色白偏黄，保持了百合的原色，且粒度较细，保持了百合原有的营养成分。百合粉可以直接饮用，做成纯天然保健饮品；可以将百合精粉掺在面粉里，制成各类精美的百合面包、饼干、面条及其他各式糕点；用于制作高档百合软糖、淀粉糖糖果、果冻等等，用途广泛。     

Enhanced recovery of avian influenza virus isolates by a combination of chicken embryo inoculation methods.

Since 1993, 14 cases of avian influenza from four different states in the U.S.A. have been diagnosed by virus isolation from eight avian species. Only 11 of the 14 avian influenza virus (AIV) primary isolations would have been successful if only the standard protocol for AIV isolation, i.e., inoculation of specific-pathogen-free embryonating chicken eggs (ECEs) by the chorioallantoic sac (CAS) route, had been followed. Primary isolation attempts were negative for AIV in three cases in which ECEs were inoculated by the CAS route; AIV could not be detected by hemagglutinating activity, agar gel immunodiffusion test or negative stain electron microscopy. However, in these three cases, primary isolations of AIV were achieved by inoculation of ECEs into either the yolk sac or onto the chorioallantoic membrane.     

育苗调制剂防治水稻立枯病机理的研究

用调制剂处理育苗床土,在生长箱内将Fusarium eqmsett,F.oxysporum,F.grammearum和Rhtzoctonia solani接种在三叶期的水稻秧苗上,研究表明施用调制剂的秧苗素质与抗病力均比对照提高,秧苗体内防御酶系及可溶性蛋白含量的动态同时表明:超氧化物歧化酶(SOD)、苯丙氨酸解氨酶(PAL)、多酚氧化酶(PPO)、过氧化物酶(POD)的活性与可溶性蛋白质含量高峰均比对照提前,且峰值高,并且随着施用量的增加,这一趋势更加明显.     

Reproductive roles predict sexual dimorphism in internal and external morphology of lake whitefish,Coregonus clupeaformis

Abstract – The different reproductive roles of the sexes can predict the direction and magnitude of sexual dimorphism of external and internal morphology. Males should have enlarged structures that enhance the acquisition of mating opportunities, whereas females are predicted to have enlarged organs that are associated with the production of eggs. We tested these predictions in male and female lake whitefish, a species in which both sexes have similar overall body size and shape. After controlling for body size, male lake whitefish had significantly longer jaws and pectoral and pelvic fins, larger hearts, and more muscle than females. Sexual dimorphism in relative muscle mass may be one of the most fundamental morphological differences between males and females. Females had relatively heavier livers than males. Because the liver is important for the breakdown of fats and vitellogenesis, selection should favour an enlarged liver in females for the processing of energy and the production of large numbers of eggs.     

几种代表性牧草对水牛泌乳高峰期生产性能的影响

将36头泌乳期、产奶量相近的水牛均分3组,探讨禾本科黑麦草、豆科紫花苜蓿、蓼科鲁梅克斯K-1三种牧草对泌乳高峰期生产性能的影响,结果发现,饲喂鲁梅克斯K-1分别比紫花苜蓿和黑麦草提高15.93%、13.14%的产奶量(P<0.05),以及6.09%、6.63%的乳脂率(P<0.01);而紫花苜蓿与黑麦草间差异均不显著(P>0.05)。故种植鲁梅克斯K-1适合我国农村散养水牛的小区放牧或舍饲补饲。     

甲状腺球蛋白免疫组化对甲状腺肿瘤的诊断价值

用免疫组化A B C法对60例甲状腺病理标本进行了甲状腺球蛋白检查,结果表明源于甲状腺滤泡上皮细胞的肿瘤,均呈阳性或弱阳性反应。大部分甲状腺癌呈弱阳性反应。作者认为甲状腺球蛋白可作为鉴别甲状腺滤泡上皮细胞源性与非滤泡上皮细胞源性的良好标记。     

明确目标 加快发展全面推进江苏水利现代化进程 明确目标 加快发展全面推进江苏水利现代化进程 明确目标 加快发展全面推进江苏水利现代化进程

全面推进现代化建设，是21世纪的三大任务之一。水利作为首位国民经济基础设施，在经济和社会的发展过程中有着不可替代的战略地位。全面加快现代化建设，水利现代化必须先行，并适当超前。 1　全面推进水利现代化建设是我省经济社会和水利事业发展的客观要求 　　江苏滨江临海，地处江淮沂沭泗的下游，河湖众多，地势低洼，全省10多万km2的面积承泄上中游200多万km2的来水，汛期80%的地面处于洪水威胁之下，素有“洪水走廊”之称。江苏又处于南北气候过渡地带，降水时空分布不均，水资源也相对紧缺，淮北地区、沿海垦区、丘陵山区水资源不足的矛盾尤为突出，苏南面临着水质型缺水的问题。特殊的地理位置和气候条件决定了江苏是一个水旱灾害频发的省份。据统计，1949年后的50年中，江苏受灾面积在66.7万hm2以上的水旱灾害共44年，其中洪涝15年、干旱10年、水旱交错19年，正常年景仅6年。因此，水利在江苏经济社会发展中始终处于十分重要的位置。江苏近50年经济与社会发展的历史证明，“经济要发展，水利必先行。”刚刚结束的江苏省委九届十二次全会明确提出：“十五”期间要以富民强省、争取率先基本实现现代化来总揽全局。在这种形势下，加快水利现代化建设进程，既是全省现代化建设的要求，也是水利自身发展的要求。 1.1　全面推进水利现代化是江苏社会和经济发展的必然需求 　　江苏经济较为发达，　1999年GDP达到7 700亿元，　居全国第二位，　占全国总量的9.4%；　人均GDP达10 669元，　已接近中等收入国家下限水平。　《中共江苏省委关于制订江苏省国民经济和社会发展第十个五年计划的建议》提出：　“十五”　是江苏全面建设宽裕的小康社会，　为率先基本实现现代化奠定坚实基础的关键时期，　全省GDP年均增长预期调控目标为9%～10%，　人均GDP年均增长8%～9%。　到2010年，　全省GDP在2000年的基础上增长1.4倍左右，　苏南及其他有条件的地方基本实现现代化。　水利作为国民经济重要的基础设施，　必须保持与经济和社会的同步发展，　并适度超前。　随着全省现代化进程的加快，　必然要求加快水利现代化建设步伐，　进一步提高防洪保安能力、　水资源供给水平和水环境保护能力，　为国民经济和社会发展提供更为可靠的水利保障。 1.2　全面推进水利现代化是江苏水利发展到新阶段的客观要求 　　1949年以来，　在历届省委、省政府的领导下，江苏人民 　　　本文为江苏省水利厅黄莉新厅长2000年12月15日在部分省、市农村水利现代化研讨会上的发言，略有删节。     

51个木麻黄地理种源对星天牛抗虫序列的调查研究

本文报道51个木麻黄(Casuarina spp.)地理种源对星天牛(Anoplophora chinensis(Forster))抗性调查和分析的结果。调查获得数据应用IBM—PC计算机进行逐步聚类分析,将51个木麻黄地理种源划分为高感、中抗、高抗和绝抗4个类群,并进行方差分析,结果表明4个类群木麻黄对星天牛的抗性达极显著差异,因此在星天牛发生严重地区可以选择既抗虫、又抗风,生长较好的C_(33)、C_(39)、C_(44)等种源造林。