执行中止制度的改革与完善

在执行实务中,由于立法上的缺陷和执行中止的随意性太大,过多的适用中止执行导致了大量的执行积案,使执行法院背上了“包袱”;同时,现行的执行中止制度承载了执行当事人过多的误解和不满。本文从执行中止事由的纯化、执行观念的更新和债权凭证制度的构建等方面为建立新的执行中止制度提出了具体的设想。     

脑心肌炎病毒多聚蛋白编码区起始与终止区的密码子使用模式简

文中利用特定区域密码子使用偏嗜性对数公式分析了脑心肌炎病毒（Encephalomyocarditis virus,EMCV）多聚蛋白编码基因的翻译起始区域与翻译终止区域的密码子使用模式.结果表明,EMCV多聚蛋白编码区内翻译起始序列区的同义密码子使用偏嗜性的正负偏差总体是平衡的,但几种在整体多聚蛋白质编码区域内使用为负偏嗜的稀有密码子却倾向于出现于编码起始区和终止区.这一有趣的现象,可利用“稀有密码子调控假说”来解释为EMCV开放阅读框两端的稀有密码子偏好性使用对整体阅读框的表达具有负调控作用.该研究说明“稀有密码子调控假说”不仅适用于细菌,而且也适用于一些RNA病毒基因组.     

美国白蛾生物学上的几个重要特性

本文对青岛市美国白蛾Hyphandria cunez种群的几个重要生物学特性进行了调查，获得了如下有意义的结果。（1）在生态光周期范围内，该虫显示了一个典型的长日照型昆虫，临界日长为14h 30min。然而在全光条件下，有41.2％的个体滞育；在全暗条件下则有83．7％的个体发育。（2）第1代蛹在自然条件下羽化的结果表明，部分个体的蛹期显著延长，呈现了夏季滞育。（3）滞育蛹置于25℃，LD16：8下滞育能够解除，但死亡率极高。（4）雄虫前翅黑斑的出现是由光周期控制的，只有在短日照下诱导的滞育蛹，滞育解除后羽化出来的雄虫才会出现黑斑。     

浙江省现行蚕品种越年蚕种解陈滞育时期的调查

从生产用蚕种中抽样，对浙江省现行春用和夏秋用主要推广品种越年蚕种在浴消后及时进入5℃或2.5℃保护的解除滞育情况进行了调查，结果表明，蚕品种间解除滞育的迟早和快慢有明显差异，一代杂交种解除滞育时期比原种稍迟。供试原种，1月中旬基本上全部解除滞育，而供试一代杂交种，至2月上旬才全部解除滞育。根据本试验调查的结果，认为原种应适当提早浴消，以便在12月下旬、1月初入库为好。此外，夏蚕或早秋蚕用的越年蚕种，浴消后入库保护温度宜采用2．5℃，有利于延长解除滞育后的有效冷藏期限。     

Development of HRB500E seismic grade rebars by using VN microalloyed and controlled cooling process

In order to reduce the production cost of HRB500E seismic grade rebars, promote its production and application, HRB500E seismic grade rebars are developed by using VN microalloyed and controlled cooling process in domestic steel plant. The mechanism and effect of precipitation strengthening and fine-grain strengthening, the relationship between termination temperature after controlled cooling and mechanical properties of rebars, microstructure, welding and aging properties, high-strain and low-cycle fatigue properties for rebars are researched by using metallographic microscopy, scaning electron microcopy, transmission electron microscopy, X-ray diffraction apparatus, flash-butt welding, materials testing machine and mechanical properties testing. The results show that V(C,N) precipitation amount accounts for 66.67% of the total amount of vanadium by adding VN alloy in liquid steel, effect of microalloy precipitation strengthening is remarkable; when termination temperature after controlled cooling is controlled at 680～710 ℃, the amount of strength surplus for rebars is more than 25 MPa, R m/ R eL ratio is greater than 1.26, uniform elongation ( A gt) is more than or equal to 11.5%, good effect of fine grain strengthening and seismic performance are obtained; rebars have some good features such as low strain aging, good welding performance, high-strain and low-cycle fatigue properties; compared with VN microalloyed and hot-rolled process,the production cost is reduced by RMB 82 Yuan/t, and economic benefit is obvious.     

论《劳动合同法》对企业利益保护的缺失

《劳动合同法》是一部关系到我国能否建成和谐社会的法律,因为大部分公民都与用人单位存在着劳动关系。随着《劳动合同法》以及《劳动合同法实施条例》实施的不断深入,其中的关于劳动合同期限、服务期、经济性裁员、劳务派遣、劳动合同的解除等几个方面的相关规定对企业利益的保护也颇具争议。这些规定过度地限制了企业的权利,这不仅有违《劳动合同法》确立的“构建和发展和谐稳定的劳动关系”这一立法目的,而且最终也会影响到劳动者自身的利益。     

Impacts of Dryland Cropping Systems on Ground Beetle Communities (Coleoptera: Carabidae) in the Northern Great Plains

Ground beetles are natural predators of insect pests and small seeds in agroecosystems. In semiarid cropping systems of the Northern Great Plains, there is a lack of knowledge to how ground beetles are affected by diversified cover crop rotations. In a 2-yr study (2018 and 2019), our experiment was a restricted-randomization strip-plot design, comprising summer fallow, an early-season cover crop mixture (five species), and a mid-season cover crop mixture (seven species), with three cover crop termination methods (i.e., herbicide, grazing, and haying). Using pitfall traps, we sampled ground beetles in five 48-h intervals throughout the growing season (n = 135 per year) using growing degree day (GDD) accumulations to better understand changes to ground beetle communities. Data analysis included the use of linear mixed-effects models, perMANOVA, and non-metric multidimensional scaling ordinations. We did not observe differences among cover crop termination methods; however, activity density in the early-season cover crop mixture decreased and in summer fallow increased throughout the growing season, whereas the mid-season cover crop mixture peaked in the middle of the summer. Ground beetle richness and evenness showed a nonlinear tendency, peaking in the middle of the growing season, with marginal differences between cover crops or fallow after the termination events. Also, differences in ground beetle composition were greatest in the early- and mid-season cover crop mixtures earlier in the growing season. Our study supports the use of cover crop mixtures to enhance ground beetle communities, with potential implications for pest management in dryland cropping systems.     

大豆茎生长习性分类方法的研究--有限型与无限型茎顶的特征与识别标记

大豆有限型与无限型茎生长习性主要区别在于：前茎顶有顶生总状花序（或花序轴、或英簇）、三裂苞片、小苞片；后茎顶有复叶及其托叶（2个，生于复叶基部两侧）。针对大豆有限型和无限型茎顶性状发育的不同特点，提出稳定的识别标记及适用时期。     

一种适宜亚洲玉米螟幼虫滞育解除的新型装置

研制了一种适宜亚洲玉米螟幼虫滞育解除的新型装置,装置由托盘、带孔泡沫板、透明圆柱管和脱脂棉4个部件组成。其方法是,将泡沫板置于盛有少量水分的托盘上、将装有亚洲玉米螟滞育幼虫,两端塞有脱脂棉的透明圆柱管插入泡沫板小孔内,然后将整个托盘置于诱导发育的条件下,观察滞育幼虫的化蛹情况。该方法模拟了亚洲玉米螟滞育幼虫解除的外环境,满足了滞育幼虫解除对水分的需求。该方法用于广东惠州(简称HZ)、江西永修(YX)、安微合肥(HF)、山东泰安(TA)、河北廊坊(LF)和辽宁沈阳(SY)6个不同地理种群亚洲玉米螟的滞育解除试验,滞育幼虫在光周期L∶D=18∶6和25℃下及在春季自然条件下化蛹成功率都在85%以上。本方法操作简便,还可直接用于亚洲玉米螟的越冬代幼虫化蛹进度的观察及成虫发生期的预测预报。