鳞翅目昆虫幼虫取食抑制素味觉神经元及其感受模式的研究进展

综述了鳞翅目昆虫幼虫的取食抑制素味觉神经元及其感受模式的研究进展,为防治鳞翅目害虫提供参考。     

Where are the food animal veterinarian shortage areas anyway?

In 2010 the United States implemented the Veterinary Medicine Loan Repayment Program (VMLRP) to address perceived regional shortages in certain veterinary occupations, including food animal practice. With county as the unit of analysis, this paper describes a pair of models to evaluate factors associated with being designated a private practice shortage area in 2010. One model is used to explain food animal veterinarian location choices so as to provide an objective evaluation of comparative shortage. The other model seeks to explain the counties chosen as shortage areas. Model results are then used to evaluate the program. On the whole the program appears to perform quite well. For several states, however, VMLRP shortage designations are inconsistent with the food animal veterinarian location model. Comparative shortage is generally more severe in states that have no VMLRP designated private practice shortage counties than in states that do.     

烟草叶绿体及其色素研究进展

综述了叶绿体的形态、结构和功能,阐述了烟草叶绿体与烟叶品质关系的研究现状,分析了环境条件对烟草叶绿体的影响,提出了烟叶叶绿体研究的重要意义和目的,并展望了当今烟叶叶绿体与烟叶品质关系的研究方向和途径。     

果脯中SO2残留量与硫处理方法相关性的研究

果脯生产过程中进行硫处理,能改善成品的色泽,防止褐变。本试验结果表明:果脯经硫处理,成品和糖液中SO_2残留量受亚硫酸盐使用浓度、使用方法、处理时间、原料种类及制作工艺等诸因素的影响。采用0.2％亚酸酸氢钠溶液浸泡果坯8h,或1％亚硫酸氢钠溶液浸泡果坯2h的硫处理方法,可使果脯中SO_2残留量保持在国家标准规定的允许范围内,并对保持和改善果脯色泽,提高产品质量有较好的效果。     

国内外麻类收获机械的现状、问题与对策

回顾了国内外麻类收获机械的研究历程和现状，分析了存在的问题及原因．提出了今后我国麻类收获机械的发展对策。     

利用Asia 1型口蹄疫病毒VP1蛋白的单克隆抗体建立单抗竞争ELISA方法(英文)

Using the purified VP1 protein of Asia 1 type foot-and-mouth disease virus as the antigen, the purified monoclonal antibody was labeled by the sodium periodate method and the monoclonal antibody competitive ELISA was established in this study. Ten positive porcine foot-and-mouth disease serums and more than two hundreds negative serum were tested, and the results were the same as the background of samples. The sensitivity test and replicate test indicated that this method was stable and sensitive, which was suitable for monitoring Asia 1 type porcine foot-and-mouth disease virus antibody.     

寄生虫身份证编码网的建立

介绍了对寄生虫身份证编码信息网建立背景、编码规则、主要功能以及实现技术。通过寄生虫身份证编码信息网的建立,不仅有利于科研人员对物种的进一步研究,而且对于教学、科普以及有关专业的应用研究都将发挥重要的参考作用。     

矮化对马尾松雌球花发生及枝梢生长的影响

以浙江省兰溪市苗圃的马尾松(Pinus massoniana)二代无性系种子园不同结实能力(低产、中产、高产)无性系为材料,设置树干高2 m处截干(D2)、4 m处截干(D4)、不截干(CK)3种矮化处理.2017—2019年连续3 a,调查各无性系在树干高度1、2、4 m处分枝的雌球花量、当年生枝梢长度、当年生枝梢直径,分析截干矮化对不同结实能力无性系雌球花量和枝梢生长的影响.结果表明:在树干高度2m处截干,显著促进高产、中产型无性系雌球花量的增加.2018年高产、中产型无性系雌球花量,分别比CK高出24.22％、30.70％,分别比D4处理高出25.44％、9.19％;2019年高产、中产型无性系雌球花量,分别比CK高出37.56％、38.38％,分别比D4处理高出32.91％、21.47％.矮化后,高产、中产型无性系雌球花量相对差距减小,2017—2019年3 a中,D4处理的高产型无性系雌球花量,分别比中产型高出92.21％、76.17％、53.79％;D2处理的高产型无性系雌球花量,分别比中产型高出68.19％、53.36％、40.56％.矮化促进马尾松树体结实层显著下移,2018、2019年,D4处理的树高2 m分枝处雌球花量,分别比CK高出26.55％、20.73％;D2处理的树高1 m分枝处雌球花量,分别比CK高出27.22％、26.39％.矮化促进马尾松新生枝梢生长;2017—2019年3 a中,D2处理的枝长,分别比CK高出11.71％、12.69％、4.34％;D4处理的枝长,分别比CK高出9.33％、5.73％、2.70％;D2处理的枝直径,分别比CK高出6.18％、9.34％、4.51％,D4处理的枝直径,分别比CK高出4.19％、3.66％、3.59％.综合测算结果,截干能够提高马尾松枝梢的雌球花量,其中在树高2 m处截干的效果最好,能提高中产、高产无性系的雌球花量20％以上.