三聚氰胺合成新工艺的理论研究和探索

本文采用分子结构中基团的热力学数据计算了尿素热解反应的热效应,并用乙烯酮的参数值进行了校正,具有较大的可靠性。在此基础上,提出了合成三聚氰胺的新工艺,具有一定的参考价值。     

物流环节对产品质量的影响

物流是随着商品生产的出现而出现的。现在经济的高速发展,使得物流在GDP中的比重越来越大。物流是产品质量的延伸,是产品质量的最终保证。合格的物流是将产品从供应地向接收地准确的、及时的、安全的、保质保量的、门到门的合理化服务模式和先进的服务流程。但是,由于各种异常情况的出现,物流经常使得产品质量大打折扣,甚至报废,大大浪费了社会资源和成本。本文着重介绍了现代物流业的问题和控制措施。     

苯代三聚氰胺的生产方法

一种苯代三聚氰胺的生产方法，是以高纯度的双氰胺和苯甲腈为原料和高活性的催化剂在溶剂中进行反应，反应温度80～125℃，反应时间3～6h，生成物经水洗，甩水，干燥，筛粉后得白色结晶粉末产物。本发明生产方法生产工艺简单，工艺路线合理，产品质量稳定，产物纯度高达99．8％，产率达92％左右。又在生产方法中使用的溶剂毒性较小，有利于安全生产。[第一段]     

三聚氰胺的生产与应用

本文介绍了三聚氰胺的国内外生产与消费情况及其应用分析，提出了国内三聚氰胺的发展建议。     

三聚氰胺的生产工艺及其发展趋势

三聚氰胺是一种含氮杂环有机化工中间体，随着近年来用途的日趋广泛，业已引起了科研工作者的关注。介绍了三聚氰胺的特性及其应用现状。综述了尿素法、改良BASF法和改良低压法等几种三聚氰胺生产工艺的发展状况，并对其作了分析比较，着重讨论了几种生产工艺的特点。结合近年来其生产工艺的研究进展，探讨了三聚氰胺的主要发展趋势。     

包头第三热电厂中水作循环水的技术研究及应用

针对包头第三热电厂2×300MW亚临界供热机组循环水系统主要工况、中水处理工艺及水质特点,通过现场动态模拟试验,开展了城市中水用作循环冷却水的研究工作,经过现场应用,证明运行良好,为同类系统提供友谊的现场运行经验。     

LC-MS检测奶粉中的三聚氰胺

三聚氰胺是一种重要的氮杂环有机化工原料,由于三重四级杆质谱仪具有多反应监测(MRM)的扫描模式,能够很好地去除基质干扰,因此能够定量检测微量的三聚氰胺。     

企业文化对产品质量信任危机的影响机理

本文主要探讨企业文化对企业价值观管理的影响,认为其影响力渗透到企业经营活动的方方面面,特别是企业文化中的经营理念对产品质量信任危机的产生、蔓延和处理方面,值得企业管理者深思和重视。     

产品质量成本管理新思路探讨

产品质量对企业经济效益的影响至关重要,长远看来更是如此.因此必须从经营的角度衡量质量体系的有效性.而质量成本管理的重要目的正是为评定质量体系的有效性提供手段,并为企业制定内部质量改进计划、降低成本提供重要依据.鉴于产品质量管理的重要性,文章介绍了产品质量成本管理的几个新思路,以期对企业的成本质量管理有所裨益.     

产品质量成本管理新思路探讨

产品质量对企业经济效益的影响至关重要,长远看来更是如此。因此必须从经营的角度衡量质量体系的有效性。而质量成本管理的重要目的正是为评定质量体系的有效性提供手段,并为企业制定内部质量改进计划、降低成本提供重要依据。鉴于产品质量管理的重要性,文章介绍了产品质量成本管理的几个新思路,以期对企业的成本质量管理有所裨益。     

三聚氰胺成品浊度超标原因分析

三聚氰胺浊度超标是三聚氰胺生产中最易出现的产品质量问题,详细分析了三聚氰胺浊度超标的原因,采取措施优化操作,避免这一现象的发生.     

Effects of product quality certification on quality perceptions of stores' own brands

Retail stores' own brands offer an alternative to national brands, but a perception of inferior quality deters potential purchasers. This study investigates the role of third-party quality certification labels in overcoming that weakness. Data collected from 268 mall shoppers in Taiwan revealed for two distinct household products that quality certification significantly enhanced perceptions of the quality of the store brands and had relatively little influence on the perceived quality of the national brands. Managerial implications are discussed, and fruitful directions for future research suggested.     

Foreign demand shocks,product switching,and export product quality: Evidence from China

Using Chinese customs data spanning from 2000 to 2013, we explore how foreign demand shocks in exporting markets impact product switching, factor adjustments, and export quality of Chinese exporting firms. We document that positive demand shocks would render firms to expand product scope by increasing the number of added varieties and decreasing the number of dropped varieties. In line with the expansion of product scope, firms adjust their factor reallocations by hiring more employees and producing in a more capital-intensive way when facing higher positive demand shocks. Higher capital intensity induces productivity improvement, and thus increases firms' export revenue, export price, and export-product quality. We also document that positive foreign demand shocks render firms to concentrate less on their core varieties by skewing their export sales away from the best performing products.     

Effects of export product diversification on quality upgrading: an empirical study

This paper empirically examines the effects of export product diversification on overall export quality in a panel data set of 115 countries from 1970 to 2010. It uses the data sets of the overall export quality and three export diversification measures of the International Monetary Fund: the extensive margin (variation in the number of new products exported), the intensive margin (variation in export values among existing exports), and the overall (Theil) index. It finds that export quality has only been increasing with a higher variation in export values among existing exports in low- and lower-middle-income countries. It also observes that export quality has been increasing with both a higher variation in export values among existing exports and new products exported in upper-middle- and high-income countries. The results are robust to the changing measures of controls in the benchmark model, the inclusion of many other controls; i.e. various measures of globalization, country size, factor endowments, macroeconomic stance, etc., and the exclusion of outliers.     

The role of perceived product quality and overall satisfaction on purchase intentions

The study investigated the effects of perceived product quality and overall satisfaction on purchase intentions. Moreover, the direct and indirect effects of values and involvement on purchase intentions were studied. The study utilized the survey questionnaire and used sport shoes as the product being researched. The sample consisted of 197 students who responded to an anonymous questionnaire. Five hypotheses were tested and four of them were confirmed by the data. Perceived quality had a direct and an indirect effect (through overall satisfaction) on purchase intentions, overall satisfaction had a direct effect on purchase intentions and involvement had an indirect effect on purchase intentions through overall satisfaction and perceived quality. The results of the study provide several theoretical and practical implications.     

An examination of the effects of partitioned country of origin on consumer product quality perceptions

This paper deals with the effects of partitioned country‐of‐origin associations on consumer product quality evaluations. The main objective of this research is to examine the cognitive processes by which country‐of‐origin information influences the consumer's evaluation of a product. To study the psychological process by which the country‐of‐origin associations are integrated in the formation of related behavioural deliberation, a hypothetical structural model was developed. The model contains seven theoretical constructs, i.e. country of design, perceived product sophistication, country of assembly, perceived manufacturing excellence, country of parts, perceived product quality and perceived product design. Data were analysed via structural equation models using Analysis of MOment Structures (AMOS) 5.0. Results show that countries that already have positioned themselves around a reputation for technological innovation related to product development and manufacturing may expect consumers to transfer those associations to new products from the country.     

Online personalized recommended product quality and e-impulse buying: A conditional mediation analysis

Consumer lifestyle and purchasing behavior have been significantly transformed over the past few years. At present, internet technologies make it possible for consumers to order goods and services on a go or in real-time without physically visiting traditional store outlets. This phenomenon calls for a change in marketing strategy to be able to reach consumers wherever they are. Accordingly, online marketing techniques such as personalized product/service recommendation, which makes products available to consumers, optimizing their interests and buying experience, are primal to market development.Therefore, this study examines whether or not online consumers' (1) E-impulse buying (EIB) behavior is influenced by personalized recommended product quality (RPQ), (2) affective image (IMAGE) of, and satisfaction (SAT) with recommended products mediate the RPQ-EIB link, and (3) online review stimulus (ORS) moderated the direct RPQ-EIB and indirect PRQ-EIB through affective image and satisfaction. Data was collected from consumers on five (5) online shops in China (N = 947). The Results showed that (i) RPQ had significant positive influence on EIB, (ii) the RPQ-EIB relation was partly explained by consumers' affective image of, and satisfaction with recommended products, and (iii) the direct and indirect relations between RPQ and EIB were sensitive to consumers’ ORS. Theoretical and practical implications, limitations and direction for future studies were also discussed in this study.     

Consumer perceptions of third party product quality ratings

Consumers increasingly rely on product quality information provided by third-party product ratings organizations. These organizations undertake the task of examining and testing competing products in the marketplace, establishing the level of quality associated with each product, and communicating this information to consumers. Despite the important role of product quality ratings in consumer decisions little research has been conducted to establish the factors which may influence consumer perceptions of these ratings. This paper examines the role of the information content provided by product quality ratings organizations on consumer perceptions. Furthermore, the influence of contextual variables, namely information cost, product category and advertising content, is examined. The results indicate that both content and context significantly influence consumer perceptions of source credibility and their intentions to use the product quality ratings in their purchase decisions.     

Signaling quality with new product preannouncements: Vaporware and the role of reference quality

This research develops a signaling game that captures the essential dynamics of new product preannouncements (preannouncement/launch/market feedback). New product preannouncements are preannouncing firms' formal efforts to inform their competitors and customers about the future availability, superior quality and introductory price of their upcoming new products. In a market, two firms compete (entrant preannounces and incumbent responds) across two periods. The entrant has private information about the true quality of a new product (the incumbent and customers do not know it), and this informational asymmetry provides the entrant with a preannouncement dilemma. Should the entrant preannounce and, if the entrant does, should the entrant tell the truth about quality? Preannouncements often get customers who might buy now from a competitor to wait for a higher quality to be available. Therefore, the entrant may have an incentive to bluff the quality of a new product in order to enhance the likelihood of customers' waiting. However, because the quality exaggeration is also likely to increase customers' quality expectations, the entrant may suffer a significant sales penalty if the entrant does not deliver the promised quality. Through the signaling game, this paper derives conditions under which such a bluff does/does not put the preannouncing firm at risk (i.e., this paper derives the separating/pooling equilibria that are the focus of signaling games).     

Three dimensional product presentation quality antecedents and their consequences for online retailers: The moderating role of virtual product experience

This study investigates the impact of three-dimensional (3D) product presentation quality (3D-Q) on attitude toward presented product and attitude toward website, which in turn affect users’ satisfaction. Therefore, this research developed a hypothetical online retailer website, which presents a variety of 3D laptops that allows users to control the content and form of the 3D flashes. We measured 3D-quality based on a multi-dimensional construct. In other words, we define and operationalize 3D-quality based on information quality, system quality, authenticity, and enjoyment (second-order). We employed a non-student sample (n=410) to collect the data. We find that 3D-quality determines perceptions of attitude toward presented product and attitude toward website, which in turn influence users’ satisfaction. Furthermore, we find that virtual product experience moderates the relationships between attitude toward presented product, attitude toward website and users’ satisfaction. Our study provides important implications for e-tailers.