Migratory labour in the Arab world

Some aspects of modern labor migration to the oil-producing countries of the Middle East are considered. Data on international labor migration among the countries of the region in 1980 are presented. The qualifications of the expatriate labor forces are then examined, and the stability and uncertainties of the labor market are discussed. The political implications of such migration for both host and sending countries are also considered.     

United States Supreme Court rules against Medicare providers in cost reimbursement case. Shalala v. Guernsey Memorial Hospital

In the long run, the impact of Guernsey will depend on the interpretation and application of the decision by HCFA, the Provider Reimbursement Review Board, and the courts. If HCFA interprets the decision as a signal that the Supreme Court is willing to grant federal agencies broad latitude to avoid the rulemaking requirements of the APA, providers may have fewer opportunities for formal input into payment policy issues under the Medicare program. The impact of the case may well go beyond cost-based reimbursement issues and affect all aspects of the Medicare program.     

Chemical-toxicological analysis of butorphanol

The conditions of butorphanol isolation from biological fluids were studied. The method of its extraction with the mix of organic solvents by pH 12 was proposed. How to identify butorphanol with the methods of thin-layer chromatography, ultraviolet spectrometry, high-performance liquid chromatography, gas chromatography with a detector of electron capture, chromato-mass spectrometry was developed. Possibility of use ultraviolet spectrometry for quantitative assessment of butorphanol was shown.     

Identification and comparison of electrical tapes using instrumental and statistical techniques: I. Microscopic surface texture and elemental composition

Comparisons of polyvinyl chloride electrical tape typically rely upon evaluating class characteristics such as physical dimensions, surface texture, and chemical composition. Given the various techniques that are available for this purpose, a comprehensive study has been undertaken to establish an optimal analytical scheme for electrical tape comparisons. Of equal importance is the development of a quantitative means for sample discrimination. In this study, 67 rolls of black electrical tape representing 34 different nominal brands were analyzed via scanning electron microscopy and energy dispersive spectroscopy. Differences in surface roughness, calendering marks, and filler particle size were readily apparent, including between some rolls of the same nominal brand. The relative amounts of magnesium, aluminum, silicon, sulfur, lead, chlorine, antimony, calcium, titanium, and zinc varied greatly between brands and, in some cases, could be linked to the year of manufacture. For the first time, quantitative differentiation of electrical tapes was achieved through multivariate statistical techniques, with 36 classes identified within the sample population. A single-blind study was also completed where questioned tape samples were correctly associated with known exemplars. Finally, two case studies are presented where tape recovered from an improvised explosive device is compared with tape recovered from a suspect.     

Univariate sex dimorphism in the Nepalese dentition and the use of discriminant functions in gender assessment

Sex dimorphism in the Nepalese dentition is described using univariate and discriminant analyses. Canines showed the greatest univariate sex dimorphism, followed by the buccolingual (BL) dimension of maxillary first and second molars. Overall, the maxillary teeth and BL dimensions showed greater univariate sex differences. However, less than half of the measured variables (46.4%) showed statistically significant differences between the sexes and the magnitude of sex dimorphism was reduced when compared to other populations. Moreover, reverse dimorphism--where females showed larger teeth than males--was observed in the mesiodistal dimension of mandibular second premolars. This reflects reduction in sexual dimorphism observed through human evolution and the consequent overlap of tooth dimensions in modern males and females. A specific purpose of the study was to develop discriminant functions to facilitate sex classification. A group of functions were developed considering the possibility of missing teeth and/or jaws in forensic scenarios. The functions permitted moderate to high classification accuracy in sexing (67.9% using maxillary posterior teeth; 92.5% using teeth from both jaws). The superior expression of sex dimorphism by means of discriminant functions is in contrast to the univariate results. This is due to discriminant analysis utilising the inter-relationship between all teeth within a dentition--these tooth correlations are not utilised in univariate analysis which results in a loss of information. It is inferred that large-scale statistically significant univariate differences are not a prerequisite for sex assessment.     

俄远东和中国东北共同发展的可行性研究

2012年9月在符拉迪沃斯托克举办了亚太经合组织峰会,这对俄远东和西伯利亚地区的发展具有重要意义.从地理条件和经济地缘条件来看,俄罗斯远东是幅员辽阔的边远地区,远东地区更积极地参加亚太经合组织的活动,为今后把远东地区变成通向世界最强大的中心地区——亚太地区的东大门创造了条件,对于俄联邦确定未来的外经战略和其今后在国际社会中的地位具有尤为重要的意义。     

An apple a day does not always keep the doctor away...

The authors describe a case of suicide in the workplace. A 45-year-old man employed by a fruit and vegetable packing company was found dead in a room containing a modified atmosphere for the packaging of fruits and vegetables. The rescue team measured the carbon monoxide (CO) concentration of the ambient air with a digital CO tester and found a level higher than 600 particles per million. Analysis of an arterial blood sample taken with an airtight syringe revealed the absence of CO but high levels of carbon dioxide (CO(2)). Autopsy revealed no significant injury and police investigators found a handwritten note of intent, describing a recent personal crisis. The authors concluded that the cause of death was suicide by asphyxiation secondary to CO(2) intoxication and notably oxygen (O(2)) depletion. This manner of suicide is rare and most cases previously described in the literature were accidental intoxications. To the best of our knowledge, this is the first case of suicide by CO(2) intoxication and O(2) depletion in a room with a modified atmosphere.