Analysis of Δ-tetrahydrocannabinol in oral fluid samples using solid-phase extraction and high-performance liquid chromatography–electrospray ionization mass spectrometry

An analytical method using solid-phase extraction (SPE) and high-performance liquid chromatography–mass spectrometry (LC–MS) has been developed and validated for the confirmation of Δ⁹-tetrahydrocannabinol (THC) in oral fluid samples. Oral fluid was extracted using Bond Elut LRC-Certify solid-phase extraction columns (10 cm³, 300 mg) and elution performed with n-hexane/ethyl acetate. Quantitation made use of the selected ion-recording mode (SIR) using the most abundant characteristic ion [THC + H⁺], m/z 315.31 and the fragment ion, m/z 193.13 for confirmation, and m/z 318.00 for the protonated internal standard, [d₃-THC + H⁺]. The method proved to be precise for THC, in terms of both intra-day and inter-day analyses, with coefficients of variation less than 10%, and the calculated extraction efficiencies for THC ranged from 76 to 83%. Calibration standards spiked with THC between 2 and 100 ng/mL showed a linear relationship (r² = 0.999). The method presented was applied to the oral fluid samples taken from the volunteers during the largest music event in Portugal, named Rock in Rio-Lisboa. Oral fluid was collected from 40 persons by expectoration and with Salivette^®. In 55% of the samples obtained by expectorating, THC was detected with concentration ranges from 1033 to 6552 ng/mL and in 45% of cases THC was detected at concentrations between 51 and 937 ng/mL. However, using Salivette^® collection, 26 of the 40 cases had an undetectable THC.     

加强公安信息建设发挥科技强警作用

公安工作的现代化，必须走科技强警之路。建立信息中心要以公安信息网建设为基础，以公安业务信息共享为目标，向科技要警力。加强信息中心建设，发挥科技强警作用。     

A New Scramble for African Oil? Historical, Political, and Business Perspectives

It has been suggested that Africa is experiencing a ‘NewScramble’ thanks primarily to its oil and gas wealth,with the United States and the People’s Republic of Chinaactively competing for access to Africa’s resources. Thisarticle aims to scrutinize the claim that Africa is facing aNew Scramble, analysing the nature of the economic and politicalchanges at work, the importance of Africa’s oil, and thepolitical and economic forces behind the new oil rush. The articlestarts with an overview of the phenomenon labelled by some asthe ‘New Scramble’. The main body of the articleevaluates the existence of a New Scramble from three subjectperspectives: history, international relations, and businessstudies. Finally, by analysing the likely impact on the economiesof oil-producing states, it considers whether we should dismayor rejoice over the ‘New Scramble for Africa’. Itconcludes that the existence of a New Scramble or a US–Chineserace for Africa should be treated with some caution and thatthe use of terms such as ‘scramble’ and ‘race’is perhaps misleading, while the economic impact of oil investmentsis likely to be bleak.     

Mandelafying the public service in South Africa: Towards a new theory

A surfeit of service delivery disapprovals in South Africa is a clear reflection of the failure of the Public Service of South from the local, provincial, and national government to effectively and efficiently deliver service to its citizenry. The rise in a dissatisfied citizenry stems from a precise social realization, which envisions the failure of the state to deliver services to the public in an impartial, responsible, translucent, and befitting manner. This has resulted in widespread service delivery protests, which has become the most famous form of response to poor service delivery by frustrated citizens. This article argues for the mandelafication of the South African public service against the background of a cocktail of factors ranging from corruption, lack of transparency and accountability, incompetence, and lack of commitment to work ethics personified by Mandela. The article further argues for the upholding of the dominant constructs in which this mandelafication is grounded in such as proper ethics, humanitarianism, transparency, accountability, empathy, and selflessness, which characterized Nelson Mandela.     

Identifying the Source of Incumbency Advantage through a Constitutional Reform

This study provides one of the first causal estimates of both the personal and partisan incumbency advantages. Using data on six local elections taking place during the last 20 years in 278 municipalities in Portugal, it relies on a reform introducing mayoral term limits as a natural experiment that creates exogenous variation on the incumbency status of officeholders while holding the incumbency status of the party constant. A new methodology combining two quasi‐experimental methods, the regression discontinuity and the difference‐in‐discontinuities designs, allows for a credible estimation of the independent personal and partisan returns to incumbency. Results causally identify the personal effect as the driver of the incumbency advantage.     

The ‘rule of experts’ in making a dynamic micro-insurance industry in India

India is reported to have the most dynamic micro-insurance market in the world and the largest weather-index insurance market among developing countries. This is interesting because, paradoxically, reports readily suggest that the primary hindrance for the industry is the widespread lack of effective demand for insurance. This paper seeks to identify, understand and problematize the paradox of resolutely promoting micro-insurance and its apparent rapid growth despite a manifest absence of demand for insurance. Neo-classical theories about risk-averse behaviour do not explain the current lack of appeal of insurance among the poor. Rather, I draw on a postcolonial political economy framework to argue that expert investment in getting prices and culture right while safeguarding micro-insurance supply currently explains the celebrated dynamism of Indian micro-insurance. I argue that promoting comprehensive institutional reform for an ideal investment and entrepreneurial climate involves securing mutually beneficial linkages, collaborations and knowledge within a broad assemblage of profit motives, insurance expertise, policy-makers and professionals. Insurance experts rule by promoting the micro-insurance sector while simultaneously investing in and gaining from discursive, material and pedagogical construction of this industry. Future research should address whether such processes and products are effective in managing financial risks of the poor.