免疫调节剂与抗球虫药联合应用的抗球虫效果

为探讨免疫调节剂对鸡球虫病的免疫反应调节作用,设计并进行了免疫调节剂与抗球虫药合用的效果的研究。试验结果以抗球虫指数的测定来判定抗球虫药与免疫调节剂合用的效果。结果表明,免疫调节剂与抗球虫药合用状态下,抗球虫指数检测显示免疫调节剂卡介苗和黄芪多糖可明显提高抗球虫指数、改善球虫感染鸡的临床症、提高增重速度等,为控制球虫病提供了新的途径。     

化药防治羊硬蜱病试验

将1150只感染有草原革蜱和森林革蜱的绵羊分为3个组,分别为驱蜱项圈组（400只）、灭蜱灵组（550只）和对照组（200只）。项圈组在治疗后0、7、15、28、45、60、75、95天,羊只平均染蜱数分别为10.3、0.9、0.7、0.3、0.4、0.5、0.5、0.1只;而对照组分别为10.2、9.2、13.6、10、9.2、6.4、8.8、4.2只。灭蜱灵组在治疗后0、18、33、48、68天,羊只平均染蜱数分别为9.8、0.5、0.7、0.5、0.1只,而对照组分别为10、9.2、6.4、8.8、4.2只,表明两个防治组保护效果均较好。     

几种旋毛虫抗原PAPS诊断液的效果比较试验

将几种旋毛虫抗原以同一浓度（0.6mg/mL）与PAPS微球交联,制成诊断试剂,进行旋毛虫阳性血清检测效果比较试验。结果显示,成虫、成虫ES、新生幼虫、肌幼虫B峰4川抗原均出现非特异性反应,而肌幼虫、肌幼虫ES、肌幼虫A峰抗原具有很高的敏感性,三者效价均达1:640。将此3种抗原所制得的诊断试剂对几种寄生虫阳性血清进行交叉试验,显示肌幼虫ES抗原对血吸虫、锥虫、弓形虫、肺吸虫、牛肝片吸虫、羊肝片吸虫阳性血清均不出现交叉反应,而肌幼虫A峰抗原、肌幼虫抗原对牛、羊肝片吸虫均出现交叉反应,对其他血清则不出现。表明肌幼虫ES抗原效果最佳,特异性最好,有很高的应用价值。     

Transition-State Spectroscopy of Cyclooctatetraene

The 351-nanometer photoelectron spectrum of the planar cyclooctatetraene radical anion (COT·-) shows transitions to two electronic states of cyclooctatetraene (COT). These states correspond to the D4h 1A1g state, which is the transition state for COT ring inversion, and the D8h 3A2u state. The electron binding energy of the 1A1g transition state is 1.099 ± 0.010 electron volts, which is lower by 12.1 ± 0.3 kilocalories per mole than that of the 3A2u state. The photoelectron spectrum shows that the singlet lies well below the triplet in D8h COT and confirms ab initio predictions that the molecule violates Hund's rule. Vibrational structure is observed for both features and is readily assigned by use of a simple potential energy surface.     

Investigating the catch returns and growth rate of wels catfish, Silurus glanis, using mark–recapture

Abstract In January 2004, 46 wels catfish, Silurus glanis L., between 51 and 135 cm total length were tagged and released into a 0.4 ha recreational, catch and release, lake fishery in the UK, and their recapture by anglers monitored throughout the year. Of the 46 tagged fish, 16 were recaptured by anglers during 170 capture events. Some individual fish were captured up to 26 times. Catfish <75 cm appeared to be the least susceptible to capture and fish >100 cm most susceptible. Frequency of captures increased with temperatures >10 °C and peaked between June and August. Selected recapture weight data were used to produce a mass specific growth equation and revealed specific growth rate was a decreasing function of body mass over the size range of the recaptured fish. Their growth was slower than fish from elsewhere in their distribution range.     

M_(99-1)引诱剂诱捕松墨天牛等松甲虫的研究

报道了松墨天牛成虫活动期间 ,在马尾松 -栎类次生混交林、马尾松 -湿地松人工林和黄山松天然林 3种不同林分中 ,应用 M99-1引诱剂诱捕钻蛀性松甲虫种类、主要钻蛀性松甲虫成虫种群数量及其比率和不同诱捕期松墨天牛雌成虫孕卵量及其比率的情况。研究结果显示 ,M99-1引诱剂诱获鞘翅目害虫达 2 6种 ,其中钻蛀性松甲虫达 14种 ,占诱获种类的 5 3.8%。马尾松角胫象、松墨天牛种群数量比率最高 ,分别达 5 7.3%～ 69.8%和 2 7.2 %～ 2 9.3%。 3种不同松林林分中 ,短角幽天牛、褐幽天牛、薄翅锯天牛等其它主要钻蛀性害虫的数量比率也较高。不同诱捕期松墨天牛雌成虫平均孕卵量及其比率 ,以活动前期 (6月下旬前 )为最高 ,分别达 16.9粒和 4 1.9%。 M99-1引诱剂诱捕是监测松林钻蛀性松甲虫种群动态和降低其虫口密度的重要方法