蜜蜂性比研究进展

蜜蜂性比是指蜂群中雌性蜜蜂与雄性蜜蜂的比例。本文对蜜蜂性比由谁操纵(蜂王还是工蜂)、影响蜜蜂性比的因素以及蜜蜂性比对蜂群生产力及生物学特性的影响进行了论述，并对蜜蜂性比研究提出了一些建议。     

论农民工研究中参与观察的过程与策略——以农民工装修队个案研究为例

参与观察法是社会学和人类学最基本的研究方法之一,其主要特点是从局内人的角度出发观察其日常生活世界,记录并分析所得到的资料以期产生在理论层面的突破。本文结合一个农民工装修队研究的个案讨论了1）参与观察法的现场选择和进入、2）研究者的局内人角色、3）建立和维持实地关系、4）研究者的观察、访问及记录、5）参与观察法的中立性和客观性和6）共同建构的研究问题共六方面参与观察实践中的问题。提出了扮演局内人角色、建立信任和互惠关系、依靠关键人物、展示研究细节等参与观察法的实践策略,并在最后提出参与观察研究的研究问题并非研究者单方面一次性决定的而是在研究者与局内人的互动中被不断重新建构的结果。     

农民工问题的哲学思考与解决对策

农民工问题是中国现代化进程中生产力与生产关系不相适应的矛盾产物,而解决农民工问题是伴随着我国现代化建设进程的一项长期性工作,也是目前亟待解决的重大课题。本文以辩证唯物主义和历史唯物主义为指导,分析了农民工问题产生的原因,并对如何解决农民工问题提出了一些对策和建议。     

金融危机前后我国“民工荒”的比较分析与对策选择

金融危机后,基本上每年都会爆发“春节民工荒”,金融危机后“民工荒”,与金融危机前“民工荒”进行比较,可以发现两轮“民工荒”在缺工背景、缺工地域、缺工工种上发生较大变化。金融危机后“民工荒”呈现的新趋势,要求在应对策略上作出新的安排：加快收入分配制度改革,建立农民工工资增长的长效机制;逐步推进户籍制度改革,实现社会保障与公共服务的均等化;加强职业技能培训,增加农民工的人力资本含量。论文试图通过上述对策将“民工荒”这种自下而上的诉求表达方式转变为常规的、制度化的利益诉求机制与利益保障机制,保障农民工权益,实现经济结构升级与产业结构梯度转移。     

培育雄蜂和工蜂所需能量值的研究

通过在调温调湿箱中人工控制温度和湿度并采用人工配制的食物饲喂 1日龄的工蜂和雄蜂幼虫 ,人工培育出工蜂和雄蜂。记录幼虫生长期间消耗的总食物量 ,利用弹氧式测热计测出食物的能量 ,计算出培育1只工蜂和 1只雄蜂所需的能量。结果表明 ,室内人工饲养蜜蜂幼虫的结果与自然蜂群相符合 ,培育 1只工蜂需要 74 8.99J,而 1只雄蜂需要 2 4 5 1 39J ,两者的比例为 1∶3.2 7。     

异地城市化:解决三农问题的新思路

城市化的本质含义是社会经济结构转变基础上的现代城市文明的形成,城市化的方式可分为本地城市化与异地城市化,异地城市化是落后地区解决三农问题的现实思路。异地城市化的主要障碍是对农民工的就业与教育歧视,发展异地城市化的主要对策就是对农民工实施“国民待遇原则”。     

湟中县关于维护农民土地承包权益调查

分析了在农村土地承包中一些侵犯外出农民工土地承包权益的问题,并提出了相应的解决措施,以期完善农村土地承包制度工作,维护外出农民工土地承包权益。     

Comparative Analyses of Proteome Complement Between Worker Bee Larvae of High Royal Jelly Producing Bees （A. m. ligustica） and Carniolian Bees （A. m. camica）

This study is to compare the protein composition of the high royal jelly producing bee （A. m. ligustica） with that of Carniolian bee （A. m. carnica） during their worker larval developmental stage. The experiment was carried out by two- dimensional gel electrophoresis. The results showed that significant higher numbers of total proteins （283） were detected in larvae of high royal jelly producing bees （Jelly bee） than those of Carniolian bees （152） on 2-d-old larvae. Among them, 110 proteins were presented on both strains of bee larvae, whereas 173 proteins were specific to larvae of Jelly bees, and 42 proteins were exclusive to Carniolian larvae. However, on the 4th d, a significant higher number of total proteins （290） were detected in larvae of Jelly bees than those of Carniolian bees （240）, 163 proteins resolved to both bee larvae, and 127 proteins were specific to Jelly bees and 77 proteins to Camiolian bees. Until the 6th d, also a significant higher number of total proteins （236） were detected in larvae of Jelly bees than those of Carniolian bees （180）, 132 proteins were constantly expressed in two bee larvae, whereas 104 and 48 proteins are unique to Jelly bee and Carniolian bee larvae, respectively. We tentatively concluded that the metabolic rate and gene expression of Jelly bees larvae is higher than those of Carniolian bees based proteins detected as total proteins and proteins specific to each stage of two strains of bee larvae. Proteins constantly expressed on 3 stages of larval development with some significant differences between two bee strains, and proteins unique to each stage expressed differences in term of quality and quantity, indicating that larval development needed house keeping and specific proteins to regulate its growth at different development phage, but the expression mold is different between two strains of larval development.