混合锌源法制备甘氨酸锌新工艺研究

为提高甘氨酸锌生产的综合转化率,提出了一条混合锌源法合成甘氨酸锌的新工艺。该工艺首次反应以乙酸锌、氧化锌、甘氨酸为原料,在水相中进行反应合成,混合液经反应、冷却、结晶、过滤,滤液作为二次反应的母液,固体晾干后即为产品甘氨酸锌。根据产品的量向母液中补加对应量的甘氨酸和氧化锌继续反应,将反应液循环利用。当甘氨酸与锌源的物质的量比为2∶1时,首次反应的适宜操作条件如下:n(氧化锌)∶n(乙酸锌)=5∶1,m(水)∶m(甘氨酸)为3∶1,反应时间为2.0h,反应温度为90℃,首次收率为55.39%。母液循环使用4次后,收率仍能接近100%,且不影响产品品质。各种检测分析表明,此工艺合成的甘氨酸锌符合国家标准。     

面料:"新新"向荣

信息中心发布的消息显示: 综合当前国际服装面料的发展趋势,有以下几个特点值得关注: 1、多种纤维混纺交织的面料越来越占有重要地位.     

Telecommunications technology applications and standards : A new role for the user

Telecommunications is at a critical juncture in the development of technology, policy and industry structure. The industry is becoming increasingly global and competitive; technology is developing faster than it can be implemented; and telecommunications is becoming strategically important to user organizations. Regulatory bodies and standards organizations are struggling with these developments. Public policy that encourages both competition in the telecommunications industry as well as the organized participation of users in the development of new technology applications, technical standards and industry regulations is essential for realizing the prospective benefits of the information age.     

Electronic surveillance in the global workplace: laws,ethics, research and practice

This paper considers the legal, ethical and cultural factors that must be addressed in evaluating the appropriateness of employing electronic surveillance (ES) in varying international contexts. It critically evaluates the rationale that underlies the use of ES in a variety of settings and types of organisations. It suggests guidelines for the adoption and use of ES and potential directions for future research.     

A future-focused approach to the technology education curriculum: the disparity between intent and practice

The recently revised New Zealand Curriculum in technology education [Ministry of Education (MoE) Digital technologies: Hangarau Matihiki, Wellington, 2017. https://education.govt.nz/assets/Documents/Ministry/consultations/DT-consultation/DTCP1701-Digital-Technologies-Hangarau-Matihiko-ENG.pdf] presents opportunities for teachers to provide a future-focused approach to learning. Teacher perceptions about the nature of their subject and the discourse within their school however, influence how the curriculum is interpreted, for enactment. This article reports findings from Ph.D. research that explored the disparity between the intent of the technology curriculum and the practice of five technology teachers, in two secondary school settings. There is a focus on the ways that teachers might be supported to navigate challenges and enable change in their practice, if they are motivated to enact technology education in a future-focused way. Teachers’ interpretation and enactment of the New Zealand curriculum are heavily influenced by others’ understanding of their subject, and the organisational structures in their school. A threshold concept is presented as a strategy to transform teachers’ thinking, when making meaning of the curriculum, and to develop their knowledge for practice. Recommendations are made regarding the necessary changes in thinking and practice in technology education in New Zealand, to address a further disparity between what school-based practitioners believe students need and what academic researchers assert is important in contemporary education. Initial Teacher Education Programmes are briefly discussed as a means of addressing this issue from another perspective, to ensure that student teachers are exposed to future-focused conceptions of the curriculum at University, to compensate when such practice is not observed during their school placements.     

美利肯公司在中国国际橡塑展展现其先进的成核剂及透明剂技术

美国美利肯化工公司于6月21日至24日在广州举行的中国国际橡塑展(Chinaplas)上向中国市场介绍了其重点产品,包括代表产品美立得3988(M illad(r)3988)聚丙烯透明剂和H yperform(r)H PN-68L高速成核剂。美利肯化工公司是美利肯公司集团下属一个业务分支。美利肯公司集团是世界最大的私有化纺织品及化工集团之一。在北美、亚洲、欧洲和南美洲设有技术服务和应用发展中心。服务于广泛的市场,产品可提高消费类及商用产品的性能、外观、耐久性等。美利肯化工是塑料添加剂的领导供货商,产品包括M illad(r)3988透明剂、H yperform(r)成核剂、Cle…     

Policy discourse and data retention: The technology politics of surveillance in the United Kingdom

This article presents an analysis of UK legislation on the retention of communications data that was introduced in the aftermath of the attacks of September 11, 2001. It presents a review of the discourses surrounding this legislation in parliament, in the wider international policy arena, in business and in terms of technology. The review of these discourses demonstrates that, in understanding policies involving a significant technological component such as communications data retention, policy alternatives may be evaluated only with an appreciation of technological characteristics alongside the traditional concerns of legislators, civil society and the business community. While academia has developed many forms of analysis for political, international, and regulatory discourses, the same must be undertaken for technological discourse, i.e. the interactions between the policies in question, the actors, and the technologies. Developing forms of analysis for technological discourses will likely lead to further understanding of both the policy problem and the actors’ interests. The paper also shows how current institutions are slowly developing the necessary skills to incorporate the technological aspects of policy into political debate, and calls for a similar development for the law.     

A new perspective on open innovation: established and new technology firms in UK bio‐pharmaceuticals

The aim of this paper is to explore open innovation (OI) implementation and its impact on firm innovation performance in sectors experiencing technological discontinuities. The paper employs the framework of inbound, outbound and coupled OI to identify processes reflecting sourcing, externalising and exchanging knowledge across organisational boundaries on upstream and downstream innovation activities and explores their impact on the innovation performance of new and established technology firms. The empirical setting is the UK bio‐pharmaceuticals sector during 1991 and 2001, a paradigmatic era of discontinous change and intensified OI implementation. First, our findings show that new technology firms (NTFs) and established technology firms (ETFs) differ in their extent and patterns of inbound, outbound and coupled OI, reflecting that they implement OI to manage their competences in light of technological change. Second, we identify a complex and multifaceted relationship between OI and patenting performance, with NTFs experiencing enhanced performance from some OI processes while ETFs experiencing challenges. The paper suggests that delineating OI into inbound, outbound and coupled, along upstream and downstream activities, offers a deeper understanding of the role of OI in innovation, guiding selective implementation in pursuing enhanced innovation performance during periods of discontinuous technological change.     

Old technology meets new technology: complementarities,similarities, and alliance formation

Alliance formation is commonplace in many high‐technology industries experiencing radical technological change, where established firms use alliances with new entrants to adapt to technological change, while new entrants benefit from the ability of established players to commercialize the new technology. Despite the prevalence of these alliances, we know little about how these firms choose to ally with specific firms given the range of possible partners they may choose from. This study explores factors that lead to alliance formation between pharmaceutical and biotechnology companies. We focus on the alliance tie as the unit of analysis and argue that dyadic complementarities and similarities directly influence alliance formation. We then introduce a contingency model in which the positive effect of complementarities and similarities on alliance formation is moderated by the age of the new technology firm. We draw theoretical attention to the intersection between levels of analysis, in particular, the intersection between dyadic and firm‐level constructs. We find that a pharmaceutical and a biotechnology firm are more likely to enter an alliance based on complementarities when the biotechnology firm is younger. Another noteworthy finding is that proxies for broad capabilities appear to be at least as effective, if not more so, in predicting alliance formation compared to fine‐grained science and technology‐related indicators, like patent cross‐citations or patent common citations. We conclude by suggesting that future studies on alliance formation need to take into account interactions across levels; for example, how dyadic capabilities interact with firm‐level factors, and the advantages and disadvantages of more or less fine‐grained measures of organizational capabilities. Copyright © 2007 John Wiley & Sons, Ltd.     

The social implications of new technology: an unpredictable future

Here the authors summarise the responses to new technology by employers, trade unions and governments from an international perspective and they identify the emerging trends on job displacement, workforce adjustment and new skill requirements in Western industrialised countries.     

Taking part in the dance: technology teachers interacting with communities of practice

This research investigated how secondary school technology teachers planned and implemented units that enabled students to access authentic technological practice through their contact with a community of practice (CoP). It was found that when teachers plan to access a community of practice for their students a complex dance-style relationship develops between the three parties involved. Unplanned interactions can have a significant effect on the planned teaching unit. If teachers are reflexive to the demands of the student and the CoP representative, there is the potential for the development of teaching programmes with technological outcomes that reflect authentic technological practice.     

Using patent information for designing new product and technology: keyword based technology roadmapping

With the rapid change in markets and technologies, it is becoming essential for firms to develop new products constantly. This can most successfully be achieved by using technology roadmaps (TRMs), which are effective tools for connecting product and technology planning. However, TRMs generally tend to overstate the qualitative and expert-dependent knowledge rather than incorporating quantitative and objective information. This paper proposes a new approach where patent data are used in a quantitative methodology to support reliable decision-making in roadmapping processes. In this study, text-mining techniques were utilized to extract the relevant information on which portfolio, co-word, and network analyses were carried out. The results were three types of product-technology maps that can be applied to specific roadmapping steps. The suggested approach is expected to yield useful information about roadmapping, and help improve the overall effectiveness and quality of the technique.     

New technology, new careers: the impact of company employment policy

Both upskilling and deskilling theses are frequently at fault in treating the unit of analysis as the skill residing in a particular group of workers, when it is the intersecting roles and labour markets, established over a period of time by recruitment, training, and job design policies, which are analytically significant.     

Skills shortages and training: a forgotten dimension in new technology

Skills shortages and training problems are forgotten by many companies when they adopt new technology. 52 engineering firms in a 'traditional' industry in a single local labour market were interviewed to examine their attitudes to new technology and the skills and training implications of technology adoption. Skills and training issues were often forgotten or misjudged during the new technology appraisal process. It was these same areas which created most problems for many companies after adoption. Misjudgements concerning the level of labour force flexibility and training requirements for staff often created problems after the adoption of new technology. Skills shortages for adopting firms are most acute at the skilled level, this predominantly concerns the 'local labour market'. Most firms adopted a short term response to skills shortages. Relatively low utilisation of policy initiatives and 'formal' avenues of assistance prior to new technology adoption were also identified.     

Strategies for best practice in research and technology institutes: an overview of a benchmarking exercise

Many technology institutes have been criticised for their dislocation from, or lack of relevance to, industry. This paper provides an overview of a major benchmaking study which analyzed in depth the most successful technology institutes from eight nations (four in Europe and four in East Asia). Institutes selected for study met a criterion which included a combination of dynamism, relevance to industry, contribution to the national science and technology infrastructure, independent fund-raising capability, innovative organizational structures, and effective management. The paper examines the activities engaged in by the eight institutes, the principal challenges they face, and identifies the main success factors underlying their achievements. The paper attempts to illustrate practical, best practice strategies by showing how leading technology institutes have successfully contributed to their national system of innovation. To this end, success factors have been categorized into those factors which are under the direct control of the institutes (internal), which are outside of their influence (external), and those which can be affected to a lesser or greater extent.     

The employment effects of new technology and organizational change: an empirical study

Studies of the relationship between technological change and employment are placed in a conceptual framework prior to an empirical study of the direct employment effects of new technology and a comparison with the effects of organizational change. It shows that the latter are considerably greater than the former, though both are relatively minor.     

New technology based firms and the emergence of new industries: a reply

The article by Claire Shearman and Gibson Burrell which was published in this journal, Autumn 1988 (Vol. 3 No. 2) provoked an immediate response. Here Ray Oakey and Roy Rothwell exercise their right of reply. This is followed by a response from the authors who defend their original article.     

Making sense of new technology during organisational change

This article examines how employees interpret the use of various social media and web 2.0 technologies by managers of an organisation during a merger process. The article explores the way in which managers use technology to give sense to the merger process, the corresponding sensemaking of employees and also how employees make sense of the use of technology itself. The findings show that new media enables the sharing of emotional sense about organisational processes between managers and employees and places employees with different levels of involvement with the process and at different points in the organisational hierarchy on equal footing. In spite of this, employees view the use of technology negatively and feel mastered by the technology itself. In discussing these unintended consequences of the use of this technology, the article further discusses the paradoxes that emerge from using new technology to give sense during organisational change.