The Effect of Temperature and Exposure Time on Stability of Cholesterol and Squalene in Latent Fingermarks Deposited on PVDF Membrane

Cholesterol and squalene are fatty materials of latent fingermarks that can be utilized for dating methodologies and visualization techniques. Previous studies have suggested these compounds undergo degradation in fingermarks as a function of time (days) and light at ambient temperature. However, studies assessing how their composition changes at low and high temperatures over short periods of time (hours) have not been published previously. Here, we performed quantitative analysis of cholesterol and squalene in natural fingermark residue using PVDF membrane, after exposure to a range of temperatures (−20 to 100°C) for 4 and 8 h. We found that levels of both fatty materials remained constant at −20 to 60°C, but both showed significant reduction at 100°C, over short exposure times. These results indicate that cholesterol and squalene are detectable at −20 to 60°C, whereas at 100°C or higher, both are lost due to rapid thermal degradation.     

Socio-political tensions in Bus Rapid Transit (BRT) development in low-income Asian cities

International development agencies, with the help of the central government, support building state of art Bus Rapid Transit (BRT) in low-income Asian cities. However, BRT investment over indigenous modes of mobility is creating socio-political tensions at the local level. This article uses multi-level governance as a theoretical lens to examine the relationships among actors in BRT investment decisions in Bandung and Surabaya, Indonesia. The research finds that local stakeholders can distort national and supranational policy initiatives totally or in a way that while projects are delivered, they are of limited use to the local communities they intended to help.     

Does fertiliser use improve household welfare? Evidence from Ghana’s cocoa industry

This article analyses welfare impacts of fertiliser adoption using data collected from 838 cocoa farm households in the four key cocoa-producing regions in Ghana. Using propensity score matching (PSM), the study indicates that application of fertiliser leads to significant gains in farm yields, farm income, consumption expenditure, consumption expenditure per capita, and value of productive farm assets. The article concludes that cocoa-specific programmes such as Cocoa High Technology (Cocoa Hi-tech), initiated to intensify the application of improved farm technologies such as fertiliser, should be strengthened through effective and efficient management systems.     

Modelling trust and contractual arrangements in a local economy

This article investigates trust among dairy value-chain actors to understand the innovative process in a local productive sector in Tunisia. It uses a sample of 45 smallholder farmers chosen randomly nearby existing collection centres in the region. A trust variable is constructed employing 11 ordinal variables based on principal component analysis, and institutional arrangements then modelled to examine the effect of trust on contracting decisions and cooperative membership. The results show that trust is defined by values such as “integrity”, “competence”, and “existence of credible information”, which are preconditions to sustainable contracts. The article contributes to the growing literature which considers social capital, networking and trust as determinants of farmer’s behaviour, as opposed to the classical model of rationality.     

Facilitating industrial symbiosis programmes in developing countries: reflections from Gauteng,South Africa

This viewpoint reflects on how to improve the process of introducing facilitated industrial symbiosis programmes (FISPs) to small and medium enterprises (SMEs) in developing countries. Although FISPs are a long-established industrial practice, their formal introduction to SMEs in developing countries has only recently begun, mostly through support from international development agencies. Based partly on anecdotal evidence from Gauteng, South Africa, we identify six key questions which need to be addressed to improve the process of facilitating FISPs.     

天然药物化学课程教学方法的探讨

随着当前对天然药物开发研究的不断深入,天然药物化学课程的重要性也越来越受到重视。而传统的天然药物化学教学方式多为教师讲授,学生被动地听、甚至靠死记硬背,学生的学习兴趣没有得到激发,效率不高,普遍反映枯燥难学。因而全面提高天然药物化学的学习水平和教学质量具有重要意义。为此,作者结合自己的教学经验谈一些感受。     

On the Human- Orientated Factors in Grotius＇ Legal Right Thoughts

格老秀斯法权思想是人类思想的精华代表。作为国际法的奠基人,格老秀斯法权思想包含自然法、国际法和万民法内容,为17世纪之后世界秩序的构建制定了法律框架。格老秀斯代表作《战争与和平法》和《海洋自由论》即已凸显了法律的人本化因素。本文通过探讨格老秀斯法权思想中的自然法和国际法理论,分析格老秀斯法权思想中所表现的人道主义、正义、自由、道德和普世主义等人本化因素的内容,为当前中国社会的转型提供参考。     

Negotiating the Marcellus: The Role of Information in Building Trust in Extractive Deals

New technology has expanded the opportunities for energy companies within the United States, often bringing them into populated communities and requiring them to negotiate deals with landowners. This case study focuses on how one group of landowners in northeastern Pennsylvania creatively reimagined the process of negotiating in a natural gas deal. They used collective bargaining for leverage, and the Internet and social media to level the informational playing field. These techniques allowed them to develop trust within the group and ultimately with one company, as they sought to protect their environment and enhance their financial gain.     

论《庄子》寓言中的技匠形象

与先秦诸子文章相比较,《庄子》寓言中出现了较多的技匠类人物形象。《庄子》作者深受上古文化观念的影响。其特定的社会地位、生活经历,也决定了《庄子》寓言的价值趋向。＂道＂是庄子哲学的本体,运用技匠类人物形象的目的在于以＂技＂释＂道＂,技匠技术之精妙正好说明＂道＂的自然无为。     

自然资源国家所有权之国家所有制说

财产权的宪法史可分为人权财产权和国家财产制两个阶段。自然资源归国家所有是国家财产制的组成部分，是现代宪法创设的用以实现国家目的的手段，其基本特征是国家垄断，其基本工具价值是垄断。以权利观审视自然资源国家所有权，它具有主体的唯一性和权利的专有性、不可变更性和价值优先性等特点。宪法上的自然资源国家所有权的实质是国家权力，是管理权，而非自由财产权。