Reduction of postmortem angiography-induced tissue edema by using polyethylene glycol as a contrast agent dissolver

Postmortem investigation is increasingly supported by computed tomography (CT) and magnetic resonance imaging, in which postmortem minimal invasive angiography has become important. The newly introduced approach using an aqueous contrast agent solution provided excellent vessel visualization but was suspected to possibly cause tissue edema artifacts in histological investigations. The aim of this study was to investigate on a porcine heart model whether it is possible to influence the contrast agent distribution within the soft tissue by changing its viscosity by dissolving the contrast agent in polyethylene glycol (PEG) as a matrix medium. High-resolution CT scans after injection showed that viscosities above c. 15 mPa s (65% PEG) prevented a contrast agent distribution within the capillary bed of the left ventricular myocardium. Thereby, the precondition of edema artifacts could be reduced. Its minimal invasive application on human corpses needs to be further adapted as the flow resistance is expected to differ between different tissues.     

Y chromosome STR haplotypes and allele frequencies in Illinois Caucasian, African American, and Hispanic males

POPULATION: Population: Illinois Caucasian ( n =117), Illinois African American ( n =218), and Illinois Hispanic ( n =68).     

我国政党制度安全：挑战及对策

政党制度安全,就是指在特定的政党政治框架中,一国政党制度不存在危险或受到内外执政风险影响下仍能保持政党制度的巩固。在新的国际国内形势下,我国政党制度面临着前所未有的挑战:我国成为国际敌对势力“西化”的主要目标;苏联模式政党制度彻底瓦解,多党制在世界范围内不断扩展;信息传播全球化网络化,思想舆论环境日趋复杂;我国社会阶级阶层结构深刻变化,出现了多样化发展的趋势。面对压力和挑战,我们必须坚持中国共产党领导的多党合作制度不动摇;重新审视和定位中国共产党特别是各民主党派的代表性;提高政治协商制度的体制化水平;推进政治协商具体工作的规范化和制度化;大胆借鉴世界各国政党和政党制度建设的有益成果。     

Morphological and spectroscopic measurements of plastic bags for the purpose of discrimination

The discrimination of noncolored transparent polyethylene bags was studied by several nondestructive and semidestructive analytical methods. X-ray diffraction, infrared spectroscopy, and optical microscopy (differential interference contrast microscopy and phase contrast microscopy) were applied to polyethylene films. X-ray diffraction was used to distinguish variations in the crystalline phase, infrared spectroscopy was used to distinguish variations in the molecular components, and optical microscopy was used to distinguish the different surface morphologies. The results show that X-ray diffraction classifies the crystalline phase of the film depending on whether it is made from low-density polyethylene, linear low-density polyethylene, or high-density polyethylene; that infrared spectroscopy is useful to distinguish the molecular components and it is the most discriminating technique; and that optical microscopy discriminate films easily by their morphological differences.     

A note on household approach to credit rationing in agrarian economies

Using clues from transaction cost economics this note develops an intertemporal agricultural household model to explain the demand-side credit rationing from formal financial institutions in agrarian economies. The model employs ex-ante transaction costs, namely search cost and negotiation cost to explain this phenomenon. The model shows that with market failure an agricultural household's production decision is not separate from its consumption decision. This is when the policy analysis household approach, which includes simultaneous decision making in production and consumption side, becomes essential.     

Supporting local climate adaptation planning and implementation through local governance and decentralised finance provision

Policies developed at national levels can be unresponsive to local needs. Often they do not provide the rural poor with access to the assets and services they need to allow them to innovate and adapt to the ways that increased climate variability and change exacerbate challenges to basic securities – food, water, energy, and well-being. In development deficit circumstances, common pool resources are important for climate adaptation purposes. In order for climate adaptation actions to deliver resilience, local perspectives and knowledge need to be recognised and given due priority in formal planning systems. Basing formal adaptive development planning on local strategies can support and strengthen measures that people have been tested and know to work. Local climate adaptation through collective action can address current increases in climate variability, future incremental changes, and the need to transform existing systems to deal with qualitative shifts in climate. These types of adaptation can work in cumulative ways. The results of local adaptation collective action that have benefits of low rivalry between users while being highly inclusive can be considered “local public goods”. Evidence is beginning to emerge that when local governance systems facilitate high levels of participation in planning collective action for climate adaptation, and direct access to resources for implementing local plans, “local public goods” can be created and common pool resources better managed.     

Climate resilience in fragile and conflict-affected societies: concepts and approaches

To understand resilience to climate and environmental changes in fragile and conflict-affected societies is particularly important but equally challenging. In this paper, we first develop a conceptual framework to explore the climate-fragility-conflict and climate-resilience-peace nexus. Second, we discuss approaches to promote pathways from climatic changes to peace. We draw on the relevant literature and International Alert's experience in fragile and conflict-affected societies to stress the key role of resilience. To build resilience, climate, development, peacebuilding, and government actors would have to overcome bureaucratic and institutional barriers and cooperate across thematic and regional silos.     

Endogenous development: some issues of concern

This article aims to provide knowledge and practical guidance to managing and implementing within the framework of endogenous development. The paper gives a theoretical overview of endogenous development, linked to issues of globalisation and poverty, and ongoing work among European institutions and academics that suggest shifts in Europe from exogenous to endogenous development approaches. It then makes a case for a paradigm shift – an African alternative to modernisation and development, namely endogenous development – using experiences with two NGOs in Ghana and Zimbabwe to locate theory in practice. The paper concludes with some empirical pre-requisites for conducting endogenous development with rural communities.

This article is prompted by the requests of my students at the University for Development Studies, Ghana, for knowledge and information, and practical guidance to managing and implementing within the framework of endogenous development. I start by giving a theoretical overview of the concept of endogenous development and link it with current issues of globalisation and poverty. I briefly mention current work among European institutions and academics that suggest shifts in Europe from exogenous to endogenous development approaches. Encouraged by such developments, I then make a case for a paradigm shift – an African alternative to modernisation and development, endogenous development. I bring to light the experiences with endogenous development in two NGOs – CECIK (Ghana) and AZTREC (Zimbabwe) – in order to locate theory in practice (praxis). I conclude by providing some empirical prerequisites for conducting endogenous development with rural communities, which demonstrate one way of conducting experimentation with farmers within the context of endogenous development.     

IMPACT OF VICTIMIZATION ON RESIDENTIAL MOBILITY: EXPLAINING RACIAL AND ETHNIC PATTERNS USING THE NATIONAL CRIME VICTIMIZATION SURVEY

Criminal victimization is known to influence households’ moving decisions, but theories suggest that the processes leading to a moving decision can vary across racial and ethnic groups. Drawing from current literature, we hypothesized that victimization would have a stronger effect on moving decisions for Whites than for Blacks or Hispanics, and that racial/ethnic residential segregation would moderate the impact of victimization on mobility. Using a longitudinal sample of 34,134 housing units compiled from the National Crime Victimization Survey for the 40 largest metropolitan areas in the United States (1995–2003), we found results that both support and contradict the hypotheses. Specifically, White residents display consistent evidence that victimization is a significant predictor of household mobility. Blacks and Hispanics, in contrast, are more varied in their moving behavior after victimization. In addition, significant differences exist among these groups in responses to victimization and in how mobility is influenced by residential segregation. Higher levels of residential segregation play a part in the victimization–mobility relationship among Blacks in a way that is more complex than we hypothesized.     

GC Analysis of Black Gel Pen Ink Stored under Different Conditions

In many criminal and civil cases in China, the most commonly questioned documents are those written with gel pen ink. An important task for forensic document examiners is to identify whether two or more ink entries in one or more documents were written with the same ink type. The identification of the age of gel ink entries made poses an important and difficult problem for forensic document examiners. In this paper, the volatile components of gel ink were determined and the gel ink was classified by gas chromatography with a flame ionization detector. Calibration curves were created to express the relationship between the content of volatile gel ink components and the age of gel ink entries stored under natural and UV‐induced aging conditions. The correspondence between the natural and UV‐induced aging conditions was also established. The experimental results showed that GC was useful in the analysis of black gel ink and applicable for determining the relative age of gel ink entries under certain conditions.