圆柱坐标机器人在针织圆纬机中的应用

基于机器人与互联网的智能化新时代背景,针对传统针织圆纬机编织过程中断纱必须依靠人工操作接纱而一直无法用机器替代的问题,研发一种用于针织圆纬机的圆柱坐标机器人,以实现智能检测纱疵、自动清纱接纱以及多模态除絮工作。介绍圆柱坐标机器人的基本结构、工作原理、控制系统及应用优势。使用该圆柱坐标机器人可以自动清纱并复接,代替人工接纱操作和除絮步骤,有效降低运营成本,大幅度提高生产效率及织物品质,提升圆纬机智能化程度,推动圆纬机装备行业向智能化技术转型升级,为实现智能工厂、无人车间奠定基础

Experimental technique on infrared radiation in wake of blunt cone in high-enthalpy tunnel

介绍在JF-10氢氧爆轰驱动高焓激波风洞中开展再人流场红外辐射测量的实验技术。风洞试验状态的驻室总压为19．6MPa，驻室总温为7920K。实验以球头钝锥体为试验模型，测量其近尾流红外辐射能量通量的横向分布。测量采用插入式锑化铟多元红外成像系统，波段范围为2．27-6．0μm。试验数据呈现明显的规律性。试验结果表明：利用这一测量技术能够提供高焓条件下有较高空间分辨率的、较为准确的红外实验数据

国外公共行政专业的博士生培养模式及其经验

国外尤其是欧美国家公共行政专业博士生的培养模式,进行了研究,分析了其存在的问题,并提出了改进我国公共行政专业博士生教育的建议

非离子态氨对转“全鱼”生长激素基因鲤鱼的急性毒性和慢性毒性

在自然水体和人工水体中氨氮对鱼类是有毒的.利用静水更新式生物测试研究了非离子态氨对转基因鲤鱼和对照鱼的96h急性毒性实验和21d慢性毒性实验.通过96h非离子态氨急性毒性实验发现,转基因鲤鱼的非离子态氨氮24,48,72和96h半数致死浓度(LC50)(2.64,2.44,2.28和2.16mg/L)分别比对照鲤鱼相应的24,48,72和96h半数致死浓度(LC50)(2.70,2.64,2.52和2.33mg/L)略低,没有显著性差异;但在不同非离子态氨氮(3.86,3.29和2.09mg/L)胁迫下

伺服运动控制器的调试方法研究

数控机床各进给轴伺服驱动器的参数设置是机床整机调试的一项重要工作。合理的参数设置,是保证机床的加工精度、运行平稳性等基本性能的关键因素之一。通过具体的实践总结,介绍伺服驱动器相关参数设置的基本原则、方法和过程,为数控机床厂商及用户的设备调试与维护提供良好的借鉴

Effect of ZnO on Cu/ZnO/Al_2O_3 catalysts for methanol synthesis

[中文文摘]用高速碰撞共沉淀法制备m(CuO) /m(ZnO) /m(Al2 O3 )比分别为 60 /3 0 /1 0和 3 0 /60 /1 0的 1 #和 2 #催化剂 ,结果表明高ZnO的 2 #催化剂活性较好 ,分散度较大。XPS测试表明 2 #催化剂表面ZnO吸附的中间体 (CHx 或CHxO)较多且表面的Cu+1浓度较高 ,从而促进CO加氢合成甲醇的活性。[英文文摘]Cu/ZnO/Al_2O_3 catalysts with ratios of 60/30/10 and 30/60/10 have been prepared by high speed collision coprecipitation method. The performance of the catalyst with the higher ZnO content shows the higher activity in methanol synthesis. The characterization results indicated that the catalyst with the higher ZnO content has higher dispersion. On the surface of the higher ZnO content catalyst, there was more Cu+1 and more intermediate (CH_x and CH_xO) adsorpted. It is beneficial for the CO hydrogenating to produce methanol

Studies on chemical constituents in ethanolic extract from Acanthus ilicifolius as a pharmaceutic mangrove

目的探讨老鼠簕的化学成分。方法将老鼠簕全株粉碎后,用95%乙醇浸提3次,合并浓缩,浸膏的石油醚部位经反复硅胶柱层析分离,结合波谱学数据鉴定化合物结构。结果从石油醚部位分离得到8个化合物,分别为β-谷甾醇(Ⅰ)、豆甾醇(Ⅱ)、正十六烷酸(Ⅲ)、正二十八烷酸(Ⅳ)、4,22-二烯-3-酮豆甾烷(stig-masta-4,22-dien-3-one)(Ⅴ)、4-烯-3-酮豆甾烷(stigmast-4-en-3-one)(Ⅵ)、5,22-二烯-7-酮-3β-羟基豆甾烷(3β-hydroxystigmasta-5,22-dien-7-one)(Ⅶ)、2-唑啉酮(2-benzoxazolinone)(Ⅷ)。结论其中Ⅴ,Ⅵ,Ⅶ为首次从该植物中分离得到。Objective To study the chemical constituents of Acanthus ilicifolius.Methods The air-dried and powdered plant material was extracted with 95% ethanol.Silica gel and Sephadex LH-20 column chromotography were used in the isolation from the ethanol extracts of the whole plant,the compounds were determined on the basis of various modern spectroscopic analyses and physical constants.Results Eight compounds were isolated from the petroleum ether soluble portion,identified as β-sitosterol(Ⅰ),stigmasterol(Ⅱ),n-hexadecane acid(Ⅲ),n-octacosanic acid(Ⅳ),stigmasta-4,22-dien-3-one(Ⅴ),stigmasta-4-en-3-one(Ⅵ),3β-hydroxystigmasta-5,22-dien-7-one(Ⅶ) and 2-benzoxazolinone(Ⅷ).Conclusion CompoundⅤ,Ⅵ,Ⅶ were obtained from the genus for the first time.国家自然科学基金(30671646);; 福建省科技计划资助项目(2003Y036

Integration of Mathematical Programming with Life Cycle Assessment to Develop Municipal Solid Waste Management Decision Support System

本研究將以數學規劃技術結合生命週期評估建立台灣地區都市廢棄物管理決策支援系統，有別以往只關注廢棄物營運的經濟效益目標，本研究將更深入探討都市廢棄物生命週期對環境所造成的衝擊，協助台灣地區擬定兼具經濟效益與環境保護的都市廢棄物管理策略。確定性多目標線性規劃模式，為協助決策者於確定性的決策環境進行管理策略擬定，模式架構主要考量都市廢棄物生命週期的空氣污染、水污染及溫室氣體排放總量管制策略，求取最小的營運成本策略。而對於存在參數或目標不確定的決策環境，則是以非確定性模糊灰色多目標線性規劃模式進行策略求解，主要以都市廢棄物生命週期的最小成本、最小空氣污染、最小水污染及最小溫室氣體為共同決策目標，求取兼具經濟效益與環境影響的權衡策略。本研究將以台灣中部6縣市為研究案例，以現有之行政區劃分及處理設施及都市廢棄物處理架構建立決策模式，並以真實之參數求解最佳策略。This study will employ mathematical programming techniques combining with life cycle assessment to establish municipal solid waste (MSW) management decision support system in Taiwan. Unlike previous MSW studies focusing only economic benefits, the life cycle impacts of MSW treatment on environment are further considered in this study. Multi objective linear programming (MOLP), which belongs to the category of deterministic models and suitable for decision making under environments with precise information, will be used in this study to find the minimum operation cost of MSWM conforming to constraints including allowable emissions of air pollutions, water pollutions and greenhouse gases. On the other hand, the stochastic model, fuzzy grey multi objective linear programming (FGMOLP) for decision making under uncertainty will also be developed to evaluate the trade off of economic and environmental impacts between different MSWM scenarios. The real world data of the 6 municipalities in mid-Taiwan area will be used as a case study