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关键词： 乡村振兴   “人畜分离”工程   集体猪舍   尊重农民   激励相容   有效约束  

摘要： 中国乡村发展需要外来扶持,但不是单向输入,而是要契合原有的社会生态系统,并使之走上现代社会发展的征程。集体猪舍案例表明,融合本土优良习俗和外来要素(工业技术、权威系统)是可能的。在土猪生产和消费场域中,通过猪食—猪肉—猪粪系统,实现废弃物—生活品—生态的再循环,弥补种养分离的代谢断层。集体猪舍以尊重农民为基础,实现各主体目标整合,并对养殖行为进行了有效约束。该模式的核心内容是"统分结合,空间集中,个体养殖,集体监督",从内容上看,基本实现了农业的多功能目的。借助土猪养殖,留守中老年农民增加了收入,掌握了生活节奏的主动权,本地居民和返乡人员吃到了放心的"土猪"食品,村内舆论、养殖秩序和环境管理也从客观上提高了村级的自组织能力。

关键词： 膜分离技术   环境工程   应用  

摘要： 结合研究来看,城市建设不断深化、工业生产节奏加快、城 镇生活污水排放量提高等等多种原因都造成了我国污水处理任务负担沉 重。目前全球范围内都开始提倡绿色环境保护理念,在这种情况下污废 水排放要也大大地提高了。膜技术作为新型污水处理工艺因此受到广泛 关注,本文基于膜分离技术在环境工程中的应用探究展开论述。

关键词： Photocatalysis   Gd/Er/Lu-triple-doped Bi2MoO6   Redox centers   Oxygen vacancy   Upconversion  

摘要： Lanthanide doping is an effective and controllable approach for optimizing the oxidation ability, light absorption and charge separation of photocatalysts. However, the multiple drawbacks of mono-component photocatalysts have not been adequately resolved by the doping of only one or two lanthanide ions. Herein, a novel Gd/Er/Lutriple-doped Bi2MoO6 photocatalyst was synthesized using a hydrothermal method. The results of trapping and 4-Chlorophenol degradation experiments suggested that the oxidizing efficiency of Bi2MoO6 was clearly enhanced by the generation of hydroxyl radicals after doping with the Gd3+ redox centers. The obtained diffuse reflectance spectra demonstrated that introducing Er3+ ions provides energy upconversion centers to improve light absorption. The obtained X-ray photoelectron and photoluminescence spectra demonstrated that abundant oxygen vacancies were produced in the Bi2MoO6 crystal after the doping of Lu3+ ions, contributing to promoting the separation of charge carriers. In summary, Gd/Er/Lu-triple-doped Bi2MoO6 displays much better photocatalytic performance than single-and double-doped Bi2MoO6 materials, which is attributed to the synergistic effects of the Gd3+, Er3+ and Lu3+ ions. These discoveries demonstrate a novel synergistic effect of the redox centers (Gd3+ doping), energy upconversion (Er3+ doping) and oxygen vacancies (Lu3+ doping) for the design and fabrication of high-efficiency photocatalysts

关键词： 膜分离技术   环境工程   应用   发展趋势  

摘要： 针对现今社会中严重的环境污染问题,我们必须要通过科学技术的创新对相应污染问题进行解决,而膜分离技术就是目前先进的环保技术之一,其能够通有选择性地对相关介质进行膜分离,从而更好的实现环境污染保护,因此本文对膜分离技术进行详细的研究,并对其在环境工程中的应用及未来的发展趋势进行阐述,希望能够为我国的环保事业做出重要的贡献。

关键词： Mesoporous black TiO2 hollow sphere   Heterojunction   Defect   Magnetic separation   Solar-driven photocatalysis  

摘要： Defect-engineered magnetic gamma-Fe2O3 ultrathin nanosheets/mesoporous black TiO2 hollow sphere heterojunctions (gamma-Fe2O3/b-TiO2) are fabricated by a metal-ion intervened hydrothermal technique and high-temperature hydrogenation, which exhibit wide-spectrum response and magnetic separation. The specific surface area, pore size and pore volume of the resultant gamma-Fe2O3/b-TiO2 with hollow structure are similar to 63 m(2) g(-1), 10.5 nm and 0.14 cm(3) g(-1), respectively. After surface hydrogenation, alpha-Fe2O3 nanosheets are converted to gamma-Fe2O3 ultrathin nanosheets (similar to 6 nm) combined with the formation of surface defects. The ultrathin nanosheet structure facilitates the surface engineering and also favors the diffusion and transportation of photogenerated charge carriers. The apparent rate constant (k) of defect-engineered gamma-Fe2O3/b-TiO2 photocatalytic degradation biotoxic tetracycline is similar to 3 times higher than that of alpha-Fe2O3/b-TiO2 under AM 1.5 irradiation. The enhancement is attributed to the introduction of narrow bandgap unit-cell-thick gamma-Fe2O3 nanosheets, the hollow structure and the defect engineering, which are beneficial to solar-light-harvesting and rapid electron transport, and spatial separation of photogenerated charge carriers. The photocatalytic degradation mechanism is also proposed. The novel magnetic gamma-Fe2O3/b-TiO2 heterojunction is a promising photocatalyst for recovering the domestic sewage in environment.

关键词： Multi-mode project scheduling   Personnel staffing   Heuristic optimisation  

摘要： When scheduling projects under resource constraints, assumptions are typically made with respect to the resource availability and activities are planned each with its own duration and resource requirements. In resource scheduling, important assumptions are made with respect to the staffing requirements. Both problems are typically solved in a sequential manner leading to a suboptimal outcome. We integrate these two interrelated scheduling problems to determine the optimal personnel budget that minimises the overall cost. Integrating these problems increases the scheduling flexibility, which improves the overall performance. In addition, we consider some resource demand flexibility in this research as an activity can be performed in multiple modes. In this paper, we present an iterated local search procedure for the integrated multi-mode project scheduling and personnel staffing problem. Detailed computational experiments are presented to evaluate different decomposition heuristics and comparison is made with alternative optimisation techniques. (C) 2018 Elsevier Ltd. All rights reserved.

关键词： 制药工程   制药分离   技术  

摘要： 随着近几年经济快速的发展,各行各业都在不断进步,人们生活的品质也子不断的提升,其中制药也的发展业是比较的迅速,现在制药行业的发展受到国家和人们的重视,因为制药也和其它的企业之间有着本质的区别,制药制造的药品是人们口服的,是治愈疾病的有效方式之一,如果药品质量不过关直接关系到的是人们的生命的安全.最近几年人们对于健康的问题关注的比较高,主要是现在行业的发展,环境污染的比较的严重,给人们的健康造成了威胁,所以对于制药的要求比较的高,解决很好目前存在的一些问题,提升国家的医疗水平,保证药品的质量.

关键词： 二级旋风分离器   参数化设计   工程图   装配  

摘要： 旋风分离器是用于气固体系或者液固体系分离的一种设备。论文针对企业、工厂在生产中遇到的旋风分离器重复性计算及零部件图纸绘制中遇到的问题,即重复性工作较多,工作效率低等问题,基于VB等程序编写开发了针对二级旋风分离器的一套参数化设计软件系统,完成的工作内容如下:1.设计基于基本参数及二级旋流分级器参数表,整理完成二级旋风分离器所有各部件的几何尺寸计算及钣金展开用面积、下料几何尺寸、体积、重量等的计算公式整理;2.设计所有程序界面,定义数据变量表,基于VB编写所有放样零件的参数化计算程序,实现对给定参数计算结果的保存;3.基于VB及AutoCAD软件,定义各零件的模板,实现设计界面、参数与CAD程序的连接,实现所有零件及放样零件工程图的参数化实现,完成二级旋风分离器零件图的参数化设计及编程,实现零件图的自动绘制并对图纸进行保存。4.开发实现对应的三维零件及整机装配的参数化程序,完成零件及装配的参数化编程及实现。5.基于参数化形成的三维装配模型,并结合ANSYS软件对旋风分离器的进行了流场数值仿真模拟,通过对固相流场与内部气相流程进行数值分析,进而得出关于其压力场、速度场的分布情况,完成所设计的旋风分离器内部流场速度、压力及分离效果的初步流场仿真分析。

关键词： 离子液体   支撑液膜   传质   稳定性  

摘要： 鉴于对离子液体支撑液膜（SILMs）分离过程传质与膜稳定性的研究仍不够成熟,本文以疏水性离子液体1-丁基-3-甲基咪唑六氟磷酸盐（[Bmim]PF6）为膜载体,以聚偏氟乙烯微孔滤膜（PVDF）为支撑体,采用常温浸渍法制备"填充型"离子液体支撑液膜（SILMs）。通过p H值测量法和称重法对所制备的SILMs的稳定性进行了探究,两种测量方法所得到的结果基本一致。结果表明,膜液相的HLB值和载体浓度越高,膜溶剂的粘度越大,水相中的盐浓度越低,膜液越容易流失,并且膜液可能是以乳化液滴的形式流失于水相中的。

关键词： 中兽药   工程研究中心   兽药产业   分离纯化  

摘要： 民族中兽药分离纯化技术国家地方联合工程研究中心(贵州)依托铜仁职业技术学院牵头校企合作、校校合作、校研合作,成为民族中兽药产业可持续发展的公共科技创新与工程化试验平台,创新平台列入国家部委与贵州省政府省部共建,实现了贵州民族中兽药领域国家工程研究中心的零突破。工程研究中心融教学、科研、工程化试验、生产应用为一体,以创新驱动为核心,以服务人才培养与产业发展为目标,以研究化、创新化、工程化带动产业化,对民族中兽药产业发展的共性关键技术进行攻关创新和人才培养,加快培育和发展中兽药产业成为区域经济