喷雾给药的特点及应用

传统给药多以口服给药和注射给药为主,但是口服给药时药物多数需以扩散方式透过胃肠黏膜而被吸收进入血液循环,后随血流分布到相应部位发挥作用,到达病变部位需要4个小时;而且气囊上只有微量血管和神经,运输到组织的药物很少,致使药物的组织分布浓度极低;且药物口服后必须经口、胃部到达小肠,在小肠吸收,然后约有70％的药物再经过肝脏的微粒作用才能到达组织。     

奶牛蹄病病案分析

本文分别选取1998年、1999年1-10月份的417例和353例奶牛蹄病病案进行分析。同时，又特别对8月份的107例和76例病案作为重点的分析对象。两年间20个月共发生各类蹄病770例次，其中8月份共183例次。在770例次的病案中，发现蹄病病例低龄化，1～4胎次牛总体发病率偏高，尤其是1胎牛发病率更高，是历年少见。     

亚洲四国东方蜜蜂的活框箱型及效果

东方蜜蜂广泛分布于亚洲大陆的中部、东部及南部,亚洲各国采用本国传统方法饲养东方蜜蜂的历史源远流长.蜂箱是蜂业生产中最为关键的用具.     

宽须蚁蝗蝗蝻空间分布型的研究及其应用

应用3种检验分布型的方法分别检验了宽须蚁蝗蝗蝻的分布型。结果表明：宽须蚁蝗蝗蝻在草地上的空间分型呈聚集分布,其聚集强度随种群的密度的升高而增加,应用Iwao模型中的参数估计了田间调查时的最适抽样数。     

Effect of Psammaplin A on in vitro Development of Bovine Aging Oocytes

To investigate the effect of histone deacetylation inhibitor Psammaplin A (PsA) on the development of bovine aging oocytes in vitro,oocytes were randomly divided into control group,aging group and 50 mmol/L PsA treated aging group (PsA group).Immunofluorescence staining and JC-1 were used to detect the blastocyst rate of bovine oocytes after parthenogenetic activation,the number of cells in blastocysts,apoptosis,reactive oxygen species (ROS),glutathione (GSH) and mitochondrial membrane potential intensity of embryos.The results showed that the blastocyst rate of the aging group was significantly lower than that of PsA and control groups (P<0.05).The blastocyst rate of PsA group was not significantly different from that of control group (P>0.05).The number of cells in the blastocysts of control group and PsA group were significantly higher than that of aging group (P<0.05).The number of cells in the blastocysts of PsA group was not significantly different from that of control group (P>0.05).The apoptosis rate in aging group was significantly higher than that of control and PsA groups (P<0.05),the apoptosis rate of PsA group was significantly higher than that of control group (P<0.05).The GSH level of MⅡ oocytes in aging group was significantly lower than that of control and PsA groups (P<0.05).There was no significant difference in GSH level between control and PsA groups (P>0.05).The ROS level of the embryos in aging group was significantly higher than that of control and PsA groups (P<0.05).The ROS level in PsA group was significantly higher than that of control group (P<0.05).The mitochondrial membrane potential of early embryos of aging group 4-8 cells was significantly lower than that of control and PsA groups (P<0.05).The mitochondrial membrane potential intensity of control group was significantly higher than that of PsA group (P<0.05).In summary,PsA could effectively delay the aging of bovine oocytes and improve the quality of oocytes.     

基于vb的电场电位分布规律和数值曲线研究

本文简单地阐述了在不同的场源形式下,电场电位的分布规律,以及提供了他们基于VB的程序代码,和数值曲线图,从而清楚地掌握地下介质电场电位的变化规律.     

浅谈犬瘟热的防治

犬瘟热分布于全世界,是犬类疾病发病率最高、死亡率最高、危害及其严重的恶性传染病。据我院动物教学医院统计,犬瘟热的病例占犬病门诊病例的34.6%,治愈率46.5%。现小结如下：     

兔病毒性出血症病毒在兔体内分布情况的研究

兔病毒性出血症(RVHD)是由兔瘟病毒引起的一种急性败血传染病。该病自1984年2月在江苏无锡地区首次发现以来,人们作了大量的研究工作,但动态地研究该病病毒在体内的分布情况报道还较少。为此,本试验利用血凝(HA)、血凝抑制(HI)和SPA协同凝集试验动态系统地测出各组织器官的病毒滴度,探讨免病毒出血症的发病机理,进一步为本病的诊断提供依据。     

消炎灵对兔体内青霉素G纳药动学及组织分布的影响

研究了消炎灵对兔体内青霉素Ｇ钠药动学及组织分布的影响，对照组兔给青霉素Ｇ钠，实验组同时给青霉素Ｇ钠和消炎灵，给药后不同时间采样，用微生物法测定血样芨组织中的浓度，二组的兔的药时数据均符合有吸收因素二室开放模型，除了动力学参数，α，Ｋａ，Ａ，Ｂ，ｔ１／２Ｋａ，ｔ１／２ａ，Ｃｍａｘ，Ｔｍａｘ外，其它参数在对照组和实验组兔之间具有显著关系，实验组的动力学参数β，Ｋ２１，Ｋｅｌ值显著减少，而参数Ｋ１２，Ｋ