The potential to determine a postmortem submersion interval based on algal/diatom diversity on decomposing mammalian carcasses in brackish ponds in Delaware

Recently botanical evidence has been studied to determine if it is useful in forensic investigations. This study was performed to examine stillborn piglet decomposition in a brackish water environment and to semi-quantitatively document stages of decomposition, degree day accumulation per stage as well as the algal/diatom diversity useful in determining a postmortem submersion interval (PMSI). Piglets and ceramic tiles were submerged in brackish ponds and sampled on a regular basis to document algal diversity and succession between substrates and stages of decomposition. Significantly greater weight was lost from piglet carcasses during the early floating and advanced floating decay stages. Seasonal effects were observed in degree-day accumulations. Diatom diversity was significantly greater on piglet carcasses compared to tile substrates. Algal diversity decreased over time on the piglet carcasses as well as the stage of decomposition. A significant relationship and strong correlation between algal diversity found on the piglet substrate with time was observed. Our results indicate that more research is needed to examine the potential to use diatoms in not only determining manner of death but also the duration of time (PMSI) a victim may have been immersed in an aquatic environment.     

Automated processing of forensic casework samples using robotic workstations equipped with nondisposable tips: contamination prevention

An automated process has been developed for the analysis of forensic casework samples using TECAN Genesis RSP 150/8 or Freedom EVO liquid handling workstations equipped exclusively with nondisposable tips. Robot tip cleaning routines have been incorporated strategically within the DNA extraction process as well as at the end of each session. Alternative options were examined for cleaning the tips and different strategies were employed to verify cross-contamination. A 2% sodium hypochlorite wash (1/5th dilution of the 10.8% commercial bleach stock) proved to be the best overall approach for preventing cross-contamination of samples processed using our automated protocol. The bleach wash steps do not adversely impact the short tandem repeat (STR) profiles developed from DNA extracted robotically and allow for major cost savings through the implementation of fixed tips. We have demonstrated that robotic workstations equipped with fixed pipette tips can be used with confidence with properly designed tip washing routines to process casework samples using an adapted magnetic bead extraction protocol.     

循环经济背景下水资源立法的健全与完善

我国水资源及其开发利用现状不容乐观。从循环经济的角度审视现行水资源法律制度,不难发现我国水资源立法存在的几个主要问题。我们应根据循环经济对水资源立法的基本要求建立和完善与循环经济相关的法律制度、加强水资源保护的内容、重视水资源市场机制的作用;还应改进现行水资源立法在立法思路、立法机制、管理体制和法律制度等方面存在的不适应发展循环经济之处;应当调整立法思路、改进立法机制、健全水资源法律体系、完善水资源法律制度设计、充分发挥市场机制的作用,使我国水资源立法更好地适应和推动循环经济的发展。     

水权利体系构建

水权制度建设的基础是构建完整与科学的水权利体系。水权利是一组涉水权利,由水资源所有权、水权和其他水权利构成。水权制度建设的目的在于水资源的可持续利用。重点在于建设水权。明晰水权,必须明晰各种水权利的含义与内容。水权是指水资源使用权,包括取水权与用益水权。     

Who coupled which stream(s)? Policy entrepreneurship and innovation in the energy–water nexus in Gujarat,India

Although policy entrepreneurship is essential for fostering policy innovations to achieve sustainable development, the literature has conflated different types of entrepreneurship and disaggregated it using inconsistent terminology. We conceptualize entrepreneurship using a six-stream variant of the multiple streams framework (MSF)—which addresses key limitations of the original MSF—to examine entrepreneurial activities in the case of the Jyotigram Yojana, a widely recognized policy innovation for managing the energy–water nexus in Gujarat, India. We find that whereas policy and political entrepreneurship no doubt played a significant role in coupling the streams and fostering this policy innovation, the process broker, program champion, and technology innovator were also important in policy formulation, implementation, and “success.” We conclude that the six-stream variant of MSF is useful for identifying and distinguishing various types of entrepreneurship involved in policy innovation for sustainability.     

协同消毒在饮用水消毒中的应用

分析已有单一消毒方法的不足 ,介绍协同消毒的概念及方法     

委托—代理与农村供水系统制度创新——以山东省临朐县农村供水协会为例

我国偏远山区的农村供水只能作为一种公共产品由政府来提供.本文以委托-代理理论为工具,结合实例,分析了农村水利工程经营权的代理人的选择问题.本文的结论是由于能够明晰产权、弱化信息不对称问题、减少委托-代理层次,选择县农村供水协会作为集体产权的最终代理人是有效率的产权安排形式.本文的结论可以推广到涉及公共品的其他领域.     

Contract farming and the reorganisation of agricultural production within the Chókwè Irrigation System,Mozambique

This paper contributes to the discussion about ‘inclusive business models’ as alternatives to large-scale land acquisitions by analysing a case in which a foreign agribusiness investor, within an impact investment paradigm, acquired and rehabilitated a rice processing plant in Chókwè, Mozambique. A contract farming programme drawn up to source raw produce for the factory led to radical shifts in control over land and water resources. The case is set against the background of a large-scale irrigation system that has played an important role in national agricultural policies since colonial times. The private sector-led development approach is strongly supported by the state which portrays it as an opportunity to reduce its dependency on rice imports. The investor redirected the benefits of land and water use through taking a role of coordination and control within the irrigated production system.

The ensuing rural transformation reminds one of earlier periods in the development of the irrigation system: the central control over production, and the very high level of agricultural inputs and mechanisation, remind one of the state socialist period, while the removal of smallholders from their land and its concentration in the hands of a few bears a strong resemblance to the scheme's establishment under colonial rule.     

Financial and Political Factors Motivating the Privatisation of Municipal Water Services

Financial and political factors are widely considered to be an explanatory factor of the privatisation of public services. However, the empirical evidence in this respect is not convincing. This paper considers elements of long-term financial condition and ideological and political strength, together with other socio-economic factors and the effects of the current global financial crisis, to address the financial stress–privatisation relationship, with respect to urban water services, observed during the period 2002–2012 in Spanish municipalities. A discrete time survival model is applied, and the results obtained show that certain elements of financial condition, together with political and ideological factors, are decisive influences in decisions to privatise urban water services. We also highlight the major impact of the Great Recession and its effect on the financial stress–privatisation relationship.     

Securing the nuclear nation

In 1946, in the Southern Urals, construction of the Union of Soviet Socialist Republics first plutonium plant fell to the GULAG-Narodnyi Komissariat Vnutrennikh Del (NKVD). The chief officers in charge of the program – Lavrentii Beria, Sergei Kruglov, and Ivan Tkachenko – had been pivotal figures in the deportation and political and ethnic cleansing of territories retaken from Axis forces during WWII. These men were charged with building a nuclear weapons complex to defend the Soviet Union from the American nuclear monopoly. In part thanks to the criminalization and deportation of ethnic minorities, Gulag territories grew crowded with foreign nationals and ethnic minorities in the postwar years. The NKVD generals were appalled to find that masses of forced laborers employed at the plutonium construction site were members of enemy nations. Beria issued orders to cleanse the ranks of foreign enemies, but construction managers could not spare a single healthy body as they raced to complete their deadlines. To solve this problem, they created two zones: an interior, affluent zone for plutonium workers made up almost exclusively of Russians; and anterior zones of prisoners, soldiers, ex-cons, and local farmers, many of whom were non-Russian. The selective quality of Soviet “nuclearity” meant that many people who were exposed to the plant's secret plutonium disasters were ethnic minorities, people whose exposures went unrecorded or under-recorded because of their invisibility and low social value.