Finance and Economics61-64F

际比较蒲艳萍重庆大学贸易与行政学院 重庆400044产业结构;;就业增长;;影响改革开放以来 ,中国经济增长与产业结构、就业结构变动之间呈现出什么样的演变关系是众多学者所关心的。通过对不同指标的实证分析和国际比较 ,可以得出如下结论 :(1) 1990年代以来 ,我国第一产业就业已达到饱和并开始排斥劳动力 ,第二产业吸纳劳动力的能     

Occupational hygiene: where from and to?

Occupational Hygiene was born in the forties in the USA, from the need to focus on the causes of the occupational diseases from a scientific and technical point of view. In other words this is to understand how to detect, how to evaluate and how to control the chronic risks at the workplace. The discipline developed very well from that time up to the nineties thank to a strong commitment of dedicated people and professional societies supported by international organizations such as the ILO and the WHO. Nowadays the situation of Occupational Hygiene differs considerably between countries which can arbitrarily be categorized according to the "culture and tradition" they have in this field. The development of this science has decreased in the countries where it has been very well established. This is probably due to the fact that the field of Occupational Health has been enlarged very much in the last decade so that Occupational Hygiene has to struggle more than before to defend its ecological niche (specificity) in this vast domain. In some countries the discipline is mixed with safety or environmental protection or even with the quality management and there is no curricula for Occupational Hygiene only. In many countries it simply does not exist. What will be the future of Occupational Hygiene? It is not possible to answer this question but there are clear opportunities to show the importance of Occupational Hygiene such as the REACH regulation in Europe which full comply with the core competencies of this profession. Other opportunities such as the elaboration of simple tools to assess and control the occupational hazards (toolkits) may also lead to a decrease in the need of well educated professionals since these tools will not require a long training to be used. In conclusion, the future will depend on the way the actual occupational hygienists will work to become more visible and to be considered as essential partners to reach the main goal of Occupational Health which is to build up healthy workplaces, for healthy companies in a healthy economy. The Occupational Hygiene Societies at the national level and the IOHA (International Occupational Hygiene Association) at the international level, will have a key role to play in this future evolution.     

In situ relationship between energy reserves and steroid hormone levels in Nereis diversicolor (O.F. Müller) from clean and contaminated sites

The aim of this study was to investigate, in situ, the temporal effects of urban effluent discharge on energy reserves and steroid hormone levels in the intrasedimentary worm Nereis diversicolor. Results have shown no differences in energy reserves (glycogen, lipids) in organisms originating from a contaminated site (Oued Souss) and a comparatively clean site (Oualidia). Both sites are located on the Moroccan Atlantic coast. In contrast, steroid hormone (progesterone, testosterone, and 17beta-estradiol) levels were significantly decreased in animals from Oued Souss. The differences in the responses suggest that organisms from the polluted site have been exposed to endocrine disruptors.     

Bride price payment and women’s autonomy: Findings from qualitative interviews from Nigeria

Marriage involving a man and a woman is a universal social institution, but its practices vary among cultures. In Nigeria, a marriage is recognized after gifts are given, and a bride price is paid by the groom’s family to the bride’s family. Understanding the bride price will reduce the challenges women face in their marital homes. Women’s autonomy is important for them to address matters affecting their health. We examined married Ikwerre women’s perspectives on bride price and its impact on their autonomy using qualitative methods. From December 2014 to March 2015, 34 in-depth interviews and six focus group discussions were conducted with married Ikwerre women. Participants reported that patriarchy and a culture of absolute respect for men, not the bride price, was the reason for women’s diminished autonomy. Participants noted that payment of the bride price was critical for validating marriage to give women respectable status in society as wives. Patriarchal rule and the demand for absolute respect for men need to be addressed in the Ikwerre culture. A woman’s capability to address her health needs and use health care is largely dependent on her ability to act autonomously. Thus, educational interventions to enable women’s decision-making are critical.     

Lead Content and Exposure from Children’s and Adult’s Jewelry Products

No abstract available.     

Brominated Indoles and Phenols in Marine Sediment and Water Extracts from the North and Baltic Seas–Concentrations and Effects

This work presents results from analytical as well as ecotoxicologic investigations of sediment and water samples from the North and Baltic Seas. A bioassay-directed procedure was used to investigate cause–effect relationships between observed effects in acute laboratory bioassays (luminescent bacteria assay with Vibrio fischeri and embryo test with Danio rerio) and analyte concentrations in extracted samples. Brominated phenols and indoles—including 4-bromophenol; 2,4-dibromophenol; 4- and 6-bromoindole; 3,4-, 4,6-, and 3,6-dibromoindole; and tribrominated compounds—were identified in partly remarkable concentrations (up to 40,000 ng g⁻¹ total organic carbon TOC for 4-bromophenol) in North Sea sediment samples and water samples (913 ng L⁻¹ 3,6-dibromoindole) from the German Bight. The toxicity of some of the identified brominated substances was low, with median effect concentration levels (EC₅₀) ranging from 0.08 to 21.7 mg/L for V. fischeri and 4.3 to 46.3 mg/L for D. rerio. Comparison of the concentrations of analytes with ECs showed a toxicity contribution of brominated phenols and indoles to overall toxicity of the fraction. In the case of one water sample from the German Bight, brominated phenols and indoles accounted for the observed toxicity. Brominated phenols and indoles, which are assumed to be of biogenic origin, have rarely been discussed so far in the context of ecotoxicologic effects in marine ecosystems.     

Girls’ education and HIV risk: Evidence from Uganda

Uganda is widely viewed as a public health success for curtailing its HIV/AIDS epidemic in the early 1990s. The period of rapid HIV decline coincided with a dramatic rise in girls’ secondary school enrollment. We instrument for this enrollment with distance to school, conditional on a rich set of demographic and locational controls, including distance to market center. We find that girls’ enrollment in secondary education significantly increased the likelihood of abstaining from sex. Using a triple-difference estimator, we find that some of the schooling increase among young women was in response to a 1990 affirmative action policy giving women an advantage over men on University applications.     

F

氟(F_2)是卤族中最活泼的化学元素,在通常条件下有刺鼻气味的淡黄色气体, 比空气稍重。氟在自然界中以氟化物形式分布于萤石、冰晶石和氟磷石灰中,不是稀有元素。1886年,法国化学家穆瓦桑,通过电解无水氟化氢,首次获得游离氟——单质氟。目前,科学家已将高纯单质氟用于火箭燃料作氧化剂,工业上用来制备氟化物,作为生产塑料、     

Inhibition of aromatase and α-amylase by flavonoids and proanthocyanidins from Sorghum bicolor bran extracts

We compared the ability of simple flavonoids and proanthocyanidins in Sorghum bicolor bran extracts to inhibit enzymes in vitro. In particular, aromatase is a target for breast cancer therapy, and inhibition of α-amylase can reduce the glycemic effect of dietary starches. Proanthocyanidin-rich sumac sorghum bran extract inhibited α-amylase at a lower concentration (50% inhibitory concentration [IC??]=1.4?μg/mL) than did proanthocyanidin-free black sorghum bran extract (IC??=11.4?μg/mL). Sumac sorghum bran extract inhibited aromatase activity more strongly than black sorghum bran extract (IC??=12.1 μg/mL vs. 18.8?μg/mL, respectively). Bovine serum albumin (BSA), which binds proanthocyanidins, reduced inhibition by sumac but not black sorghum bran extract. When separated on Sephadex LH-20, sumac sorghum proanthocyanidins inhibited both enzymes but showed reduced inhibition with BSA. Flavonoids from either cultivar had higher IC?? values than proanthocyanidins, and BSA had little effect on their inhibition. Proanthocyanidins and simple flavonoids in LH-20 fractions both inhibited aromatase with mixed kinetics and affected K(m) and V(max). The results show that potential health benefits of sorghum bran may include actions of monomeric flavanoids as well as proanthocyanidins.     

Savings from sub-groups?: Policy guidance and Alzheimer's disease treatments

Background  

A range of new therapeutic agents are now available for the management of Alzheimer's disease. With limited resources available however, policy-makers and other health care professionals have to prioritise and judge competing treatments on criteria such as the magnitude of clinical effectiveness and cost-effectiveness. Policy guidance that restricts treatments to defined patient sub-groups can improve the cost-effectiveness of treatments, and can help limit rises in health care expenditures. Budget impact models that estimate the amount of additional costs and potential savings are being increasingly used by policy-makers. However, the amount of savings estimated in such models depends on the effectiveness of treatment in changing morbidity, and the association between morbidity and costs.     

Automated Biosurveillance Data from England and Wales, 1991–2011

Outbreak detection systems for use with very large multiple surveillance databases must be suited both to the data available and to the requirements of full automation. To inform the development of more effective outbreak detection algorithms, we analyzed 20 years of data (1991–2011) from a large laboratory surveillance database used for outbreak detection in England and Wales. The data relate to 3,303 distinct types of infectious pathogens, with a frequency range spanning 6 orders of magnitude. Several hundred organism types were reported each week. We describe the diversity of seasonal patterns, trends, artifacts, and extra-Poisson variability to which an effective multiple laboratory-based outbreak detection system must adjust. We provide empirical information to guide the selection of simple statistical models for automated surveillance of multiple organisms, in the light of the key requirements of such outbreak detection systems, namely, robustness, flexibility, and sensitivity.     

Where do internal markets come from and can they work?

The basis for the argument in favour of the internal market as a means of allocating resources within the health care sector has never been made fully explicit. In particular, the link between the economic theory of market allocation and the specific pricing rules adopted by a number of health care sectors to allocate resources is rarely a focus of attention. Health sector objectives are rarely specified. The mechanisms which remedy failure in the exchange process are not explicitly defined. In short, the optimal structural conditions for the operation of internal markets are not known. The central argument pursued here is that, as this is the case, and using the UK as an example, there are no criteria to which purchasers or providers can turn to assess the operation of exchange within the internal market. Not surprisingly, the internal market dissolves into a number of individual bilateral agreements between purchasers and providers which may or may not increase efficiency in allocating health sector resources.