关于配合物稳定常数的测定

介绍了利用光学密度法测定配合物的组成及其稳定常数的原理,并以Cu2+-磺基水扬酸-水体系为例,详细介绍了使用光学密度法测定配合物组成及其稳定常数的实验过程以及数据处理过程。     

诺氟沙星金属配合物的合成及抗菌活性研究

采用水热法合成诺氟沙星配合物[Ni(NF)₂]₂H₄[SiW₁₂O₄₀]·8H₂O(1)，利用元素分析、红外光谱、紫外可见光谱等手段对配合物1进行基础表征。采用纸片药敏测试法和二倍稀释抑菌实验法测试了配合物1和配体对金黄色葡萄球菌、大肠杆菌和枯草杆菌的抑菌活性。利用紫外光谱法研究配合物1与CT-DNA之间的相互作用。结果表明，配合物1对金黄色葡萄球菌、大肠杆菌和枯草杆菌均有不同程度的抑菌活性，配合物1通过嵌插方式与CT-DNA相互作用，结合常数(K_b)为2.0×10⁴ L/mol。配合物1以嵌插方式与CT-DNA相互作用，配合物1对枯草杆菌具有显著的抑菌效果。     

新型滤池参数测定仪的研发与应用

自来水厂的滤池参数测定多使用手持测杆、肉眼观测的方法,测定误差较大、人工成本较高。结合滤池特点,开发一种新型滤池参数测定装置。介绍该测定装置的结构组成、工作原理以及使用方法和步骤。经实际应用验证,新型滤池参数测定仪性能稳定可靠、测定误差低、人工投入少,具有一定的推广价值。     

轻柴油氧化安定性测定的误差分析

轻柴油新国标的实施，使氧化安定性总不溶物分析成为柴油产品的重要质量指标。由于方法操作难度较大，测定结果容易出现偏差，因此，对产生误差的各种因素进行了分析，阐述选用理化性能稳定的滤膜及严格按照方法规定的试验步骤操作，分析误差就可以控制在规定的范围内。     

含苯并咪唑席夫碱铜(Ⅱ)配合物的合成、表征及电化学性质

参照文献使用水杨醛与2-氨乙基苯并咪唑盐酸盐反应合成了一种席夫碱配体(HL).通过元素分析、红外光谱和紫外-可见光谱表征等方法,对配合物的组成和结构进行了测试,并用循环伏安法对配合物进行了电化学性质的研究.     

苯基二氯化膦的合成工艺改进

苯基二氯化膦，又称二氯苯基膦，其分子中含有2个活泼氯，是一种重要的阻燃剂及农药中间体，现采用一种配合剂P2O5，与催化剂三氯化铝形成稳定的配合物，经过滤即可除去，无需溶剂，操作简单，且该配合剂价格低廉，可使吨产品成本降低2万元左右，该产品已在河南一家公司投入工业化生产。     

基于2-(1H-咪唑-1-甲基)-1H-苯并咪唑和邻苯二甲酸配体的Co(Ⅱ)配合物的合成及晶体结构

以氮杂环化合物2-(1H-咪唑-1-甲基)-1H-苯并咪唑(imb)为配体,在邻苯二甲酸的存在下,采用常温挥发法制备了一个结构新颖的配合物{[Co(imb)_2(H_2O)_4]_2·2SO_4·CH_3OH·H_2O}n.单晶X射线衍射结果表明,该配合物是双核结构,两种Co(Ⅱ)均为六配位,邻苯二甲酸不参与该配合物的构筑但却是生成该配合物的必要条件。此外,还对该配合物的红外光谱进行了研究。     

聚合催化剂吡啶二亚胺铁配合物专利研究进展

烯烃聚合反应是石油化工中的基础化学反应,催化剂在此类反应中尤其重要,而吡啶二亚胺铁配合物正是此类催化剂中的重要的一类,本文主要介绍吡啶二亚胺铁配合物的专利研究进展及其修饰方法,有助于更全面的了解吡啶二亚胺铁配合物及进一步进行研究。     

利用廉价金属光催化还原CO2的研究进展

介绍光催化还原CO₂的重要性及廉价金属Fe,Mn,Co配合物的光催化还原CO₂的研究,并对其机理进行介绍。     

镀银添加剂的专利文献综述

电镀银溶液可分为氰化镀银液和无氰镀银液两种,由于氰化的污染问题,无氰化清洁生产是电镀行业发展的一个必然趋势。从上个世纪70年代至今,世界各国的学者开始主要研究与银离子配合的稳定常数、且与银氰络离子接近的无毒或低毒的添加剂。本文将对镀银的专利进行了总结及分析,对于该领域的专利审查以及相关行业的工业生产有一定的借鉴作用。     

基于统计的2-D人脸形状模型的建立

针对人脸面部特征提取技术是自动视觉翻译和人脸识别中的关键技术之一,介绍了基于统计的人脸形状模型建立原理。利用有标志点的图像训练集变化模式的先验知识而建立模型的方法能够将人脸形状的变化限制在合理的范围内,并能够充分表征人脸特征,实验证明该方法是有效的。     

试论对国有财政资金的两种主要监督方式

对国有财政资金的两种主要监督方式是指会计监督和审计监督。这两种监督方式是对同一经济业务过程进行控制的两个不同阶段,是资金监督全方位一体化的重要组成部分,两者虽然在监督范围、监督内容、监督方式方法及监督过程中所起的作用各不相同,但从监督的对象和目标来看却是一致的,即保证国有资金在使用单位内部按照预算规定安全完整地运行。笔者从对国有财政资金的两种主要监督方式——会计监督和审计监督的重要意义、联系及区别等方面进行分析探讨,旨在进一步加强对两种监督方式的认识,促进两者的完美结合,充分发挥各项经济监督职能在社会主义市场经济建设中的应有作用。     

行为经济学中的社会公平态度与价值取向研究——以新加坡、中国上海和兰州为例

本文从行为经济学的公平游戏入手，通过在新加坡、中国上海和兰州的实验，研究在不同性别、文化、年龄、职业和教育背景的情况下有关公平心理及其决策结果的问题．探讨不同区域和阶层人们的公平心理，较为深入地分析总结了各种影响经济生活中对公平问题不同理解和行为差异产生的因素。     

Does peer monitoring influence choices between cash and food? Findings from a field experiment

To explore whether choices for transfers are influenced by peer monitoring, we examine private versus public choices among monetarily equivalent values of cash and food in northern Kenya. Many northern Kenyan communities face high-levels of chronic food insecurity and are tightly-knit, often sharing food aid transfers. Yet, humanitarian cash transfers are relatively new to the area. Whether cash will be subject to the same sharing norms is not well understood. Utilizing a randomized block experiment, we find that assigning a respondent to choose in front of peers decreases the likelihood of choosing a cash transfer relative to at least some food. We argue that peer monitoring decreases the value of cash relative to food in two inter-related ways. Choosing food in public, first, provides an opportunity for respondents to publicly demonstrate a commitment to local food aid sharing norms. Second, choosing cash in public may be riskier since cash does not yet have established sharing norms. A critical implication is that transfer choices and retargeting of resources within the community can be influenced by use of public or private discussions when eliciting community views, especially in communities where sharing is a salient social norm.     

Health information and substitution between fish: Lessons from laboratory and field experiments

This paper compares results from a lab experiment and a field experiment conducted in France to evaluate the impact of health information on fish consumption. In both experiments, health information concerns a benefit (omega 3) and a risk (methylmercury). While the lab experiment focuses on two species, namely canned tuna and canned sardines, the field experiment offers a complete measure of the information impact on the choice of various species by consumers. Results from both experiments showed a significant preference change against canned tuna. In the lab experiment, the preference change was reflected by a decrease in WTP, while in the field experiment the preference change was reflected by a decrease in consumption. In the field experiment, among all fish consumed, only the decrease in consumption of canned tuna was statistically significant. A model calibrated to represent the demand for canned tuna allows for a comparison between the two experiments. It shows that the lab experiment suggests a smaller decrease in canned tuna demand compared to the field experiment.     

The Output Effects of Government Sponsored Cartels During the New Deal

This paper uses the National Industrial Recovery Act of 1933, which set up industry-wide cartels in the manufacturing sector of the US economy, to gain empirical insight into the current debate on the output effects of cartels. Recent theoretical studies have demonstrated ways in which cartels could expand, rather than reduce output as is traditionally thought. The New Deal cartel experiment does not support this 'efficient cartel' view. On the contrary, the legislation brought about a reduction in manufacturing output, as traditional cartel theory would predict.     

正交试验在企业生产实践中的应用

企业在进行开发性质量管理的科研、产品与工艺设计时,常常遇到多因素试验分析的问题,并且,因素之间的交互作用复杂,各因素的主次难以分清,常常需要多次重复试验,以求最优。同时,希望通过试验认识各因素间的主次关系、搭配综合作用关系等。在进行试验时,能否以尽可能少的试验次数来达到要求。正交试验法就是为了这个目的,解决合理的安排试验,对试验进行科学分析的问题。以企业中制定酚醛树脂砂配方试验、燃气阀分部件密封试验的两个实例,对每个正交试验方案的设计进行了详细的阐述。     

Consumer acceptance of provitamin A-biofortified maize in Maputo,Mozambique

Biofortified staple foods hold the potential to alleviate micronutrient malnutrition in many impoverished regions of the world. However, biofortification often alters the flavor, appearance, and other features of foods in ways that may limit consumer acceptance of the new varieties and diminish their impact. This research examined the acceptance of provitamin A-biofortified maize through taste tests and a trading experiment conducted in Maputo, Mozambique. On average, participants ranked the taste, texture, and appearance of their local white maize over an orange, biofortified variety and over a white variety with similar texture and flavor as the biofortified maize. Nonetheless, a large share of participants in a framed experiment accepted offers to trade local white maize meal for meal from the biofortified maize. Household size, the presence of small children, dietary diversity, and perceived taste were statistically significant determinants of acceptance. Results suggest that existing preferences for white maize do not preclude acceptance of orange, biofortified varieties and that provitamin A-biofortified maize may be a self-targeting nutritional intervention.     

优化检验模式 提高检验效率 确保物资配送

阐述了物资供应部门的新、旧检验模式，新模式中关于物资检验的“实栓、免检、监控”三种方式．以及检验报告的“检验存档”和“库房专用”两种不同处理方式。提出了提高物资检验准确率的几点做法和措施。