漳村煤矿综采队实行上岗前安全宣誓的实践与探索

本文介绍了漳村煤矿综采队实施上岗前安全宣誓的做法、经验和体会 ,为煤矿安全管理工作做出了有益的探索 ,具有一定的推广应用价值     

基建机组热力系统清洁处理和防腐蚀新工艺

在《火力发电厂锅炉化学清洗导则》规定的范围之外．对基建机组设计了新的清洗系统。采用了新的清洗药剂：推行了高、低压加热器疏水系统和凝汽器汽侧系统的化学清洗新工艺。该工艺的实施，节约了大量燃油、燃煤和除盐水．加快了基建机组的试运进程。通过实施铜管表面清洁处理和防腐蚀新工艺，彻底清除了与循环水系统相连的所有换热器的“早期腐蚀”隐患，其经济、社会效益十分显著。     

载三氧化二砷的PEG—PLGA隐性纳米粒的制备及体外研究

The aim of this study was to prepare arsenic trioxide （ATO）-loaded stealth PEGylated PLGA nanoparticles （PEG-PLGA-NPs） and to assess the merits of PEG-PLGA-NPs as drug carriers for ATO delivery. PEG-PLGA copolymer was synthesized with methoxypolyethyleneglycol （Mw=5000）, D, L-lactide, and glycolide by the ring-opening polymerization method. Amorphous ATO was transformed into cubic crystal form to increase its solu-bility in the organic solvent. ATO-loaded PEG-PLGA-NPs were prepared by the modified spontaneous emulsification solvent diffusion （SESD） method, and the main experimental factors influencing the characteristics of nanopar- ticles were investigated, to optimize the preparation. To confirm the escape of PEG-PLGA-NPs from phagocytosis by phagocytes, PEG-PLGA-NPs labeled rhodamine B uptake by murine peritoneal macrophages （MPM） were analyzed by flow cytometry. The results showed that the physicochemical characteristics of PEG-PLGA-NPs were affected by the type and concentration of the emulsifiers, polymer concentration, and drug concentration. ATO-loaded PEG-PLGA-NPs, with particle size of 120.8nm, zeta potential of-10.73mV, encapsulation efficiency of 73.6%, and drug loading of 1.36%, were prepared under optimal conditions. The images of transmission electron micros-copy （TEM） indicated that the optimized nanoparticles were near spherical and without aggregation or adhesion. The release experiments in vitro showed the ATO release from PEG-PLGA-NPs exhibited consequently sustained release for more than 26d, which was in accordance with Higuchi equation. The uptake of PEG-PLGA-NPs by MPM was found to decrease markedly compared to PLGA-NPs. The experimental results showed that PEG-PLGA-NPs were potential nano drug delivery carriers for ATO.     

队务公开是保障职工民主权利的重要措施

社会主义市场经济体制的建立,使地质队步入了竞争激烈的市场,逐步成为法人实体和市场主体。在这种新旧体制的重大转变过程中,地质队如何保障职工的民主权利,更加有效地继续全心全意依靠工人阶级,调动起职工当家作主的积极性,笔者认为实行队务公开是一种有效措施和重要手段,它对于推进决策的民主化、科学化,依靠职工建设好地质队具有重要的现实意义。 一、实行队务公开有利于落实职工当家做主的     

煤巷掘进机整体搬迁技术

由于煤巷掘进机传统的拆卸式搬迁效益低下 ,已不能适应高产高效矿井建设的要求。而通过采取一定的措施 ,充分利用煤巷掘进机自行能力和对巷道的良好适应性 ,就可以实现煤巷掘进机的整体搬迁 ,从而加快掘进工作面搬迁速度 ,增加掘进机有效掘进时间 ,并能节省大量折装费用 ,具有良好的经济效益。     

Animator Pro应用技巧

自从笔者介绍用Animator Pro进行动画制作的文章在《多媒体世界》发表以后,经常有人问是否能用AnimatorPro实现电视中看到的特技效果,Animator Pro是否能与Windows,3DS等软件进行挂接等问题。笔者认为,作为多媒体系统中的一种软件工具,Animator Pro不是独立的,要充分发挥其功能,必须综合运用相关的软、硬件,并充分发挥人的创作水平。 本文介绍了笔者在运用Animator Pro中得出的一些经验、技巧,例如画中画的实现、画面过滤的特技效果、背景动画的实现、怎样与影视制作结合等,供同行们参考。     

安钢2#六千氧压机油泵的PLC改造及使用效果

介绍了安阳钢铁股份公司 2 #六千氧压机油泵进行PLC改造的过程、工作原理及使用效果。