“互联网+”背景下电子商务在饲料企业经营中的运行机制研究

电子商务的迅猛发展,不仅改变了企业的经营模式,也改变了用户的消费习惯和理念。饲料企业也开始寻求电子商务与传统交易方式相结合的经营模式,谋求企业的长远发展。本文基于"互联网+"背景下,深入分析了我国饲料企业电子商务的经营现状和存在的问题,探讨了电子商务在企业经营中的运行机制和不足之处,并提出了相关的优化对策,以期能帮助企业实现可持续发展。     

肌肉发生相关长链非编码RNA研究进展

肌肉参与机体的运动、协调和体温调节等一系列生命活动,同时畜禽肌肉是人类重要的蛋白质来源。肌肉发生过程中的不同调控机制可引起肌肉发育的阶段性差异,而整个肌肉发育主要以两个时期（胚胎期和出生后）的发育状态体现。长链非编码RNA（lncRNA）是一类不具有蛋白编码能力且长度>200 nt的RNA分子。近年来,随着基因组学和分子生物学技术的高速发展,发现lncRNA广泛参与到肌肉发育的各个阶段,以多种作用机制调控肌肉的发育过程。作者介绍了肌肉的发育过程,综述了目前发现的与肌肉发育相关的lncRNAs及其作用机制,并阐述其在肌肉发育的不同阶段发挥的重要作用,为进一步研究肌肉发育相关lncRNAs提供了参考。     

非充分灌溉条件下水稻生长发育及生理机制研究

本文以水稻非充分灌溉试验的大量实测资料为基础，分析了水分胁迫对水稻主要形态指标、生理机制及产量的影响，对非充分灌溉条件下水稻所持有的生理机制进行了较细致的研究。研究结果对于指导有效、省水的稻田灌溉具有重要意义。     

Research Progress on Action Mechanism of Animal Anti-parasitical Drugs

Animal anti-parasitical drugs are mainly used to prevent and control animal parasitosis, and also an effective way to protect the healthy development of animal husbandry and public health security.The efficacy of anti-parasitical drugs depends on the interaction between drug molecular and different target tissues and target cells of parasite or animal.Because of the variety of anti-parasitical drugs, the anti-parasitical mechanisms are complex.With the development of new anti-parasitical drugs and the depth of scientific research, especially the development of chemical synthesis and biological pharmaceutical technology, the variety and quantity of anti-parasitical drugs constantly increase.With the discovery of new drug structure and its action target, the study on the mechanism is constantly deep.The author mainly summarized the research progress on action mechanism of anti-parasitical drugs.     

3-RPS并联机构奇异位形及工作空间研究

提出一种求解并联机构无奇异位形工作空间的方法。通过分析3-RPS并联机构在奇异位形时动平台的微分运动与结构约束及关节约束的关系，得到机构奇异位形判别方程和奇异位形曲面方程。探索了工作空间边界，综合分析了机构奇异位形与工作空间的关系。合理选择机构结构参数和关节变化范围，得到了无奇异位形的工作空间。     

发展农业机械化,建设社会主义新农村

现代化的农机装备作为先进的劳动工具,推动了生产力和文明社会的快速发展。建设社会主义新农村,农业机械化既是充要条件,又是必要条件;农业机械化是实现生产发展、生活宽裕、村容整洁、环境和谐的手段、条件、保证。没有农业的机械化,不可能有真正意义上的社会主义新农村建设。     

明甪直天王殿松木斗拱振动台试验研究

以甪直保圣寺天王殿斗拱为参考对象,进行无缩尺松木斗拱模型的地震台试验研究。通过对斗拱的加速度与动力放大系数变化趋势、斗拱在振动过程中位移响应变化特征、斗拱变形最大时刻和各构件变形最大时刻的滑移位移和回转位移数值对比分析,得出以下结论：地震加速度用于衡量地震烈度,并不能直接反映斗拱试件的最大变形;振动频率的变化对斗拱回转变形的变化起重要作用,振幅是决定各构件水平滑移的主要因素;各构件变形最大值与斗拱整体变形最大值具有很强相关性,其中栌斗和华拱的回转变形对斗拱的整体变形而言,处于支配地位;斗拱的华拱连下昂部分主要起装饰作用,其榫卯连接节点位置在振动过程中较为薄弱,在对实际文物维护修缮过程中应引起重视并采取相关加固措施。     

Measurements to Protect Owners'' Benefits under the Non-price Bottom Bidding

Investment on construction projects has become an important factor in improving the development of economy in China.The non-price bottom bidding is a representation that the investment on projects is becoming standardized.During the years of trying out the non-price bottom bidding,the colluding in bidding or bidding below the cost has happened several times,which have damaged the benefits of owners.To solve theses problems,this paper firstly studies the reason of these problems-the failure in the normal relationship between principal and agent.Then,some measures have been presented as follows: building systematic and scientific system of qualification prejudication,judging behaviors of colluding in bidding and bidding below the cost with reason and providing a surety mechanism of the project.The authors hope that these measures are beneficial to non-price bottom bidding.     

Analysis on Limitation of Present Urban Planning in China

In urban design, only by continuous and dynamic research work from design to finally putting it into practice, can we made good control on city appearance. This article analyzes nowadays defects in our urban design from two aspects as the result establishment and validated control, and tries to conceive a feasibility plan to solve the problem.     

Mechanism and Progress About Protein Crystal Growth by Atomic Force Microscopy

Atomic Force Microscopy(AFM) plays a very important role in researching crystal growth mechanism, especially protein crystals. The principle of AFM for protein crystal examination is briefly described as well as the importance of research on protein crystal growth, known growth mechanisms including 2-D steps nucleation, spiral dislocation, normal growth, 3-D nucleation and anisotropic development, and latest progress about eucommia antifungal protein(EAFP) and Trichosanthin(TCS) protein crystal growth mechanism, respectively. Finally, protein growth under microgravity environment is also expounded here and their development tendency and practical prospect.