Turning the tide? The emergence of national urban policies in Africa

It is widely believed that national urban policies in Africa are rare. This is a concern bearing in mind the formidable challenges posed by urbanisation in the context of low incomes and weak institutions. The paper unpacks the concept of urban policy and what it means for the way in which cities grow. It considers the situation in five countries with different approaches. The evidence indicates increasing interest in steering urban growth through coordinated actions on land, housing and infrastructure. The positive developmental arguments seem to carry more weight than the threats of disaster if squalor and social unrest are not addressed. Yet the appropriate policy responses are not clear-cut and there are many dilemmas faced. Capacitating city governments to plan and invest in networked infrastructure appears to be one of the priorities.     

A database of mitochondrial DNA hypervariable regions I and II sequences of individuals from Slovakia

In order to identify polymorphic positions and to determine their frequencies and the frequency of haplotypes in the human mitochondrial control region, two hypervariable regions (HV1 and HV2) of the mitochondrial DNA (mtDNA) of 374 unrelated individuals from Slovakia were amplified and sequenced. Sequence comparison led to the identification of 284 mitochondrial lineages as defined by 163 variable sites. Genetic diversity (GD) was estimated at 0.997 and the probability of two randomly selected individuals from population having identical mtDNA types (random match probability, RMP) for the both regions is 0.60%.     

EVAR FOR ABDOMINAL AORTIC ANEURYSM IN ELDERLY PATIENTS,AND THE BIOETHICAL ISSUES THAT COULD GENERATE

Open repair is likely to be more cost-effective than EVAR on average in patients considered fit for open surgery. EVAR is likely to be more cost- effective than open repair for a subgroup of patients at higher risk of operative mortality. These results are based on extrapolation of mid-term results of clinical trials. But how does that affect on patients who are older than 80 years. Late survival depends very much on the patient＇s age at the time of surgery. The life expectancy in this group of patients who undergo successful Abdominal Aortic Aneurysm （AAA） open repair or EVAR is not as good as that of the age-matched general population. At this age, life expectancy is six years or more over patients who are older than 85 years, life expectancy is just five years. On the other hand, annual/one year risk of rupture in patients with AAA diameter six to seven cm is 10%-20%. At the same time, total cost of endograft implantation is at least 10,000 euro per patient, which is still extremely expensive for many countries in transition. Regarding all these facts, some countries （in transition） are forced to reassess ethical point of endovascular treatment. Simplified they haven＇t enough endografs for all patients. Vascular surgeon in this situation has need to decide how, when and who needs by priority this expensive graft. Of course, this is not medical question, but for sure question that encumbers vascular surgeons from countries in transition. Should we consider octogenarians as the first group of patient who will endure this problem？ How to decide who needs endograft as priority and who does not？ Finally, who is better candidate for endovascular, open surgical or medicament treatment from financial point of view？ These are just some of the questions, which are still open and encumber many vascular surgeons from countries with poorer healthcare system.     

Parallel Paths A Comparison of CSR Firms and Social Enterprises

Corporate social responsibility （CSR） is the incorporation of environmental and social responsibilities into the business activity, in line with the economic responsibility that firms have traditionally focused on. The social entrepreneur is a type of entrepreneur who seeks to resolve a social or environmental problem through the application of a business model, motivated by the aim of helping others and pursuing positive social change. A key aspect of social entrepreneurship （SE） is therefore the creation of social wealth. Both concepts pursue positive social change, but unlike social entrepreneurs, the objective of a responsible firm is not to solve social issues created by others, rather to understand and limit the social and environmental impacts of their profit-generating activities. In recent decades, research on CSR has grown considerably, whereas SE has only begun to receive serious academic attention quite recently. Crucially, few studies have tried to link and differentiate the two areas. Due to the increasing interest in both concepts nowadays, the need to clarify the similarities and differences between them is greater than ever, and is the principal aim of this work.     

Formalizing China��s armed police: the 2009 PAP Law

While the People??s Armed Police (PAP) has existed in China for over 26 years, the force??s operations, powers and duties have never been formally stipulated. On August 27, 2009, the People??s Armed Police Law was passed by the National People??s Congress. The PAP Law, which contains seven chapters and 38 articles, covers the main areas of the tasks and responsibility, duties and power, safeguard measures, discipline and supervision, and legal responsibilities of the force. The implementation of the PAP Law represents a benchmark development in the history of the Chinese policing. It not only signals official recognition of the need to enhance the legitimacy of China??s social control apparatus, but also maps onto a larger developing trend of progressive legalization of Chinese order today. Although the law provides a legal basis for the existence and functions of a force that plays a critical role in China??s security and stability today, some issues about the boundaries of power and procedures of operation for the PAP remain unaddressed. To what extent that this law will improve the legitimacy and subsequently strengthen the performance of the PAP force is an open question.     

Rapid analysis of caffeine in "smart drugs" and "energy drinks" by microemulsion electrokinetic chromatography (MEEKC)

A novel method based on microemulsion electrokinetic chromatography (MEEKC) with diode array detection (DAD) for rapid determination of caffeine in commercial and clandestine stimulants, known as "energy drinks" and "smart drugs", is described. Separations were carried out in 50 cm × 50 μm (ID) uncoated fused silica capillaries. The optimized buffer electrolyte was composed of 8.85 mM sodium tetraborate pH 9.5, SDS 3.3% (w/v), n-hexane 1.5% (v/v) and 1-butanol 6.6% (v/v). Separations were performed at a voltage of 20 kV. Sample injection conditions were 0.5 psi, 3 s. Diprofilline was used as internal standard. The determination of the analytes was based on the UV signal recorded at 275 nm, corresponding to the maximum wavelength of absorbance of caffeine, whereas peak identification and purity check was performed on the basis of the acquisition of UV radiation between 200 and 400 nm wavelengths. Under the described conditions, the separation of the compounds was achieved in 6 min without any interference from the matrix. Linearity was assessed within a caffeine concentration range from 5 to 100 μg/mL. The intra-day and inter-day precision values were below 0.37% for migration times and below 9.86% for peak areas. The present MEEKC method was successfully applied to the direct determination of caffeine in smart drugs and energy drinks.