石河子大学少数民族医学生膳食和营养状况

目的 通过对石河子大学医学院少数民族学生进行体格检查和膳食营养状况调查,为少数民族大学生膳食营养指导提供依据.方法 采用24 h回顾法与称重法进行膳食调查,了解少数民族大学生膳食结构、能量及各营养素摄入状况;通过测量身高、体重和腰围,了解其生长发育状况.结果 少数民族大学生膳食构成以粮谷类为主,动物性食物摄入量略低于正常,蔬菜、水果摄入量严重不足,维生素A、维生素B1、维生素B2、叶酸、维生素C和钙严重缺乏.蛋白质、铁平均摄入量能达到推荐摄入量,但优质蛋白质仅占蛋白质总摄入量的22.19％,血红素铁摄入量仅占铁总摄入量的4.69％.能量摄入男女生均不足.男、女生消瘦人数分别占男、女生总人数的10.42％和22.12％,腹型肥胖人数分别占男、女生总人数的20.83％和1.77％.结论 少数民族大学生膳食结构、饮食习惯不合理,能量及大部分营养素摄入不足,男、女生均存在一定程度营养不良,应加强对少数民族大学生的营养知识教育,提高膳食营养质量,改善身体健康状况.     

江西农业大学学生军训期间膳食营养状况分析

了解大学生军训期间膳食与营养状况,为指导大学生的合理膳食提供依据.方法 选取江西农业大学2012级学生50名,采用24 h膳食记录法和称重法调查军训前与军训中连续5d的膳食摄入状况.结果 军训前与军训中各类食物摄入量比较,男、女生谷类、蛋类、奶类,男生肉类和女生水果类日平均摄入量差异均有统计学意义(P值均<0.05);各主要营养素摄入量比较,男、女生能量、碳水化合物、维生素A,以及男生钙、蛋白质和女生维生素C摄入量差异有统计学意义(P值均<0.05).男、女生三大营养素供能比较为合理.结论 军训期间学生各种营养素的摄入量均有所增加,大多数营养素的摄入量已经超过推荐量.     

内蒙古民族大学蒙古族学生膳食营养状况调查

目的了解蒙古族大学生的膳食结构和营养状况,为合理营养提供科学依据。方法采用称重记账法和膳食记录法进行5d膳食调查,依据《中国居民膳食营养素参考摄入量(DRIs)》中18岁以上中等体力劳动的推荐摄入量(RNI)或适宜摄入量(AI)进行比较评价。结果蒙古族男女学生蛋白质、铜、硒、维生素PP摄入充足,男生铁、锌、维生素A、维生素B1、维生素B2均达到和超过推荐摄入量(RNI)或适宜摄入量(AI)。蒙古族男女学生膳食中存在的共性问题是膳食纤维、维生素C及钙不足,脂肪类食物来源比例不合理。蒙古族女生膳食蛋白质质量尚可,但数量不足,膳食中能量、铁、锌、维生素B2摄入不足,维生素A和维生素B1摄入严重不足;蒙古族男生早餐能量摄入不足。结论蒙古族男女大学生膳食结构均不合理,应对学生加强营养知识的教育。     

大庆市大学生膳食营养状况调查

目的了解大学生膳食营养状况，为引导其改进营养观念和膳食结构提供依据。方法对大庆市高新技术开发区的400名大学生采用24h膳食回顾法，进行连续3d跟踪调查。结果与《中国居民膳食营养素参考摄入量》比较，学生的能量、蛋白质、脂肪、维生素、矿物质的摄入量均存在不同程度的不足，钙摄入量明显不足，维生素C摄入量不足，蛋白质主要来源于粮谷类食物，脂肪供能比例偏低。结论大庆市大学生普遍存在膳食结构不合理以及某些营养素摄入不足的现象。     

新疆维吾尔族大学生膳食营养状况

目的 了解维吾尔族大学生膳食营养状况，为指导合理膳食提供理论依据。方法 采用分层整群抽样法，在新疆3所大学分年级随机抽取班级，对所抽取班级维吾尔族大学生全部进行调查，共调查学生1235名。结果 维吾尔族大学生能量及营养素摄入量除铁以外，均低于推荐摄入量标准。能量的食物来源以碳水化合物所占比例偏多，蛋白质来源中豆类食品摄入量偏低。早、晚餐的营养素和能量摄人量均明显不足。维吾尔族大学生营养不良率男生为28.07％，女生为29．72％；肥胖率男生为14.14％，女生为13．31％。结论 维吾尔族大学生的膳食结构不合理，营养状况较差。应合理搭配食物，全面增加各种营养素摄入量，以提高营养水平。     

山西医科大学2011年学生膳食营养状况

目的 了解山西医科大学学生膳食营养状况及其存在的问题,为开展大学生营养宣传教育提供科学依据.方法 整群抽取山西医科大学学生429名,采用24h膳食回顾法连续记录3d膳食,计算每人每日食物摄入情况,与中国居民膳食宝塔的食物摄入推荐量进行比较;计算能量及各种营养素的摄入量,与中国居民膳食营养素参考摄入量进行比较.结果 在学生所有食物摄入中,谷类摄入量偏高,鱼虾类、禽畜肉类、奶类及奶制品、蔬菜水果摄入量偏低;维生素A、维生素B1、维生素B2及维生素C摄入不足;钙摄入不足;铁摄入充足,但多来自于植物性食物.学生早餐摄入的能量较低,女生零食摄入较多.结论 山西医科大学学生的膳食营养状况不理想.应指导大学生进行合理膳食.     

陕西中医学院大学生日常膳食情况调查与分析

目的 了解陕西中医学院学生膳食营养素摄入状况,发现问题,提出建议,进一步指导大学生合理膳食.方法 本次调查采用在不同的年级依据班级进行整群抽样后,应用24 h膳食回顾调查法进行膳食调查.结果 大部分营养素摄入量不能达到推荐摄入量,男生总能量摄入量高于女生,膳食中维生素A、维生素C、钙、铁、锌的食物来源多为植物性食...     

攀枝花学院护理专业学生膳食状况调查

目的 了解攀枝花学院护理专业学生的膳食状况,为采取营养干预措施提供依据.方法 随机整群抽取攀枝花学院医学院241名护理专业学生为调查对象,采用24 h回顾法,连续调查7 d膳食情况.结果 攀枝花学院护理专业学生膳食以粮谷类为主食,男生摄入量达到推荐摄入量低限的120.9%,女生摄入量为推荐摄入量低限的89.8%,男、女生各类食物摄取量除豆制品外均偏低;能量、蛋白质、硫胺素、核黄素、维生素C和钙摄入不足,视黄醇和铁的摄取量充足;早餐能量不足,晚餐能量偏高.结论 攀枝花学院护理专业学生应适当增加粮谷类、奶类、鱼肉类、蔬菜水果的摄入量,尤其增加早餐能量摄入.     

低体重患儿膳食营养调查

目的 调查评价低体重患儿的膳食结构和饮食营养状况,以便提出膳食建议并为营养教育提供依据.方法 采用简化的食物频率询问法对普儿病房142名3～6岁低体重患儿进行膳食调查,并以中国居民膳食营养素参考摄入量(DRIs)为标准,评价膳食能量和各营养素摄入情况.结果 142名低体重息儿各营养素摄入量未达80%推荐摄入量/适宜摄入量(RNI/AI)的有:维生素A为69.2%,碳水化合物为63.3%,维生素C为61.1%,热能为58.8%,钙为54.9%.有34.8%患儿粮谷类提供的能量不到40%.结论 低体重患儿膳食结构不合理,粮谷类和蔬菜类食物的摄入量严重不足,导致患儿能量不足、维生索A、维生素C及钙缺乏.     

惠州学院164名在校女生膳食营养状况调查

目的了解女大学生膳食营养状况,为开展高校膳食营养教育提供参考。方法采用24h膳食记录法和查帐法对惠州学院164名随机抽样的女大学生进行连续3d的膳食调查,通过实验室检查进行营养状况评价。结果惠州学院在校女生能量摄入量只占RNI的73%,钙摄入量只占RNI的42%;碳水化合物、维生素B1、维生素B2、铁、锌摄入量不足;动物性食品偏少;血液钙、镁、铁、铜、锌浓度偏低。结论惠州学院女生膳食结构不合理,应调整膳食结构,增加动物性食物的摄入,提高膳食能量、钙、维生素B1、维生素B2、微量元素的摄入量。     

Calcium intake in the elderly: validation of a dietary questionnaire

Epidemiological studies of calcium and osteoporosis have been hampered by the lack of a suitable tool for assessing calcium intake. This report describes a new frequency and amount questionnaire for measuring present and past calcium intake in the elderly. The validity of the questionnaire was tested against two commonly used standards of dietary assessment, five-day duplicate diets and seven-day weighed dietary inventories. The resulting correlation coefficients were, respectively, r = 0.76 and r = 0.69, while that for repeatability was r = 0.84. Furthermore, the questionnaire categorized subjects into thirds of the distribution of intake with almost no gross misclassification. It is suggested that the present findings may be extended to the majority of normal, healthy elderly subjects, implying wide application for the questionnaire in the assessment of calcium intake in the elderly.     

The occurrence of antimicrobial substances in toilet,sink and shower drainpipes of clinical units: A neglected source of antibiotic residues

Antibiotics represent one of the most important drug groups used in the management of bacterial infections in humans and animals. Due to the increasing problem of antibiotic resistance, assurance of the antibacterial effectiveness of these substances has moved into the focus of public health. The reduction in antibiotic residues in wastewater and the environment may play a decisive role in the development of increasing rates of antibiotic resistance. The present study examines the wastewater of 31 patient rooms of various German clinics for possible residues of antibiotics, as well as the wastewater of five private households as a reference.To the best of our knowledge, this study shows for the first time that in hospitals with high antibiotic consumption rates, residues of these drugs can be regularly detected in toilets, sink siphons and shower drains at concentrations ranging from 0.02?μg·L^?1 to a maximum of 79?mg·L^?1. After complete flushing of the wastewater siphons, antibiotics are no longer detectable, but after temporal stagnation, the concentration of the active substances in the water phases of respective siphons increases again, suggesting that antibiotics persist through the washing process in biofilms. This study demonstrates that clinical wastewater systems offer further possibilities for the optimization of antibiotic resistance surveillance.     

Self-reported health problems among Swedish miners one year after unemployment

Unemployment is considered to be a public health concern sincedeterioration in the health of the unemployed is often anticipated.However, for some groups, such as miners, unemployment mightimprove health due to a cessation of potentially harmful occupationalexposures. This study evaluates the health of 79 miners in oneSwedish iron-ore mine, and 226 age-matched controls from thegeneral population, during one year after the closure of themine. The participants received a questionnaire regarding medicalhistory and subjective symptoms at the beginning of the studyperiod, and after one year. Statistically significant negativeeffects on self-reported health attributable to unemploymentwere not found, although neuropsychiatric symptoms were morecommon among the unemployed miners. The miners reported a statisticallysignificant improvement in grip force (p=0.031). They had asignificantly higher prevalence of symptoms associated withmining related exposures when compared with the population controls;pain in the upper extremities [relative risk (RR)=2.27, 95%confidence interval (Cl)=1.44–3.59), back pain (RR=1.84;Cl=1.237–2.75), vasospastic disease of the fingers (RR=2.05;Cl=1.18–3.57) and obstructive respiratory symptoms (attacksof dyspnea and wheezing: RR=3.67; Cl=1.167–11.6).     

Excès de cas humains et animaux de tularémie en France au cours de l’hiver 2007–2008 : émergence ou phénomène isolé ?

Context

Tularemia is a zoonosis affecting humans and hares in France. We describe the results of surveillance in both species, in 2007 and 2008.

Methods

Human tularemia cases are mandatorily notifiable in France since 2003. In hares, surveillance relies on volunteer hunter associations in all districts of the country. Data from mandatory reports and volunteer surveillance in 2007/2008 were analyzed and compared with previous results.

Results

In 2007/2008, 144 cases were reported in humans and 117 cases in hares. This was a 100% increase compared to previous years. Human cases differed from those of previous years only by the frequency of contact with breeding animals. Human cases without any documented risk exposure were also more frequent.

Conclusion

An increase of tularemia cases occurred in 2007/2008 in both species. Complementary studies are needed to identify the species reservoir in France to understand the causes of this peak of cases.     

深圳公立医院管理体制改革制度设计

深圳公立医院管理体制改革实行政事分开、管办分开,在理事会架构下按法定机构模式组建市医管中心,落实公立医院运营管理自主权.作者从当前公立医院管理体制的弊端入手,介绍了深圳市进行公立医院管理体制改革的基本思路及改革方案设计的主要举措,深入剖析了的改革方案的特点,并对改革效果进行了预测.     

Occupational health hazards in mining: an overview

This review article outlines the physical, chemical, biological, ergonomic and psychosocial occupational health hazards of mining and associated metallurgical processes. Mining remains an important industrial sector in many parts of the world and although substantial progress has been made in the control of occupational health hazards, there remains room for further risk reduction. This applies particularly to traumatic injury hazards, ergonomic hazards and noise. Vigilance is also required to ensure exposures to coal dust and crystalline silica remain effectively controlled.     

Effects of nitrogen dioxide on red blood cells of rats: Changes in components of red cell membranes during in vivo exposure to NO2

Red cell membranes, prepared from red blood cells of rats exposed to 4, 10, or 20 ppm nitrogen dioxide (NO₂) for 1 to 10 days, were examined for evidence of changes in membrane components. Appreciable changes were not found in contents of phospholipid and cholesterol during exposure to 10 ppm NO₂. By contrast, protein content altered with the time of exposure. Moreover, changes in protein composition were observed by employing sodium dodecyl sulfate — polyacrylamide gel electrophoresis. Twenty-four-hour exposure to NO₂ at the concentration above 10 ppm resulted in a marked increase in the percentage of lysophosphatidylethanolamine (LysoPE) to the total phospholipids. The prolonged exposure to 10 ppm NO₂ gave rise to a further increase in LysoPE, whereas the percentage of phosphatidylethanolamine (PE) showed a gradual decrease. A 1-day exposure to 4.0 ppm NO₂ also caused an increase in sialic acid content and decreases in those of PE and hexose. In addition to contents of these components the percentage of LysoPE increased 5 days after exposure and the elevated values were maintained up to the end of exposure period. These results demonstrate that red blood cells in circulation exhibit different membrane properties in terms of lipid and carbohydrate composition during 10 days of exposure to 4.0 ppm NO₂.     

Manufacture and use of nanomaterials: current status in the UK and global trends

This paper provides an overview of the production and use of nanomaterials (NMs), particularly in the UK. Currently, relatively few companies in the UK are identifiable as NM manufacturers, the main emphasis being the bulk markets in metals and metal oxides, and some niche markets such as carbon nanotubes and quantum dots. NM manufacturing in the UK does not reflect the global emphasis on fullerenes, nanotubes and fibres. Some assumptions have been made about the types of NM that are likely to be imported into the UK, which currently include fullerenes, modified fullerenes and other carbon-based NMs including nanotubes. Many university departments, spin-offs and private companies have developed processes for the manufacture of NMs but may only be producing small quantities for research and development (R&D) purposes. However, some have the potential to scale up to produce large quantities. The nanotechnology industry in the UK has strong R&D backup from universities and related institutions. This review has covered R&D trends at such institutions, and appropriate information has been added to a searchable database. While several companies are including NMs in their products, only a few (e.g. manufacturers of paints, coatings, cosmetics, catalysts, polymer composites) are using nanoparticles (NPs) in any significant quantities. However, this situation is likely to change rapidly. There is a need to collect more information about exposure to NPs in both manufacturing and user scenarios. As the market grows, and as manufacturers switch from the micro- to the nanoscale, the potential for exposure will increase. More research is required to quantify any risks to workers and consumers.     

Investigating clusters in the workplace and beyond

Clusters of disease are common and occur in the workplace and in the general community. They often arouse considerable concern among the population. Investigations have sometimes lead to exciting new knowledge, but in general the investigation of clusters is difficult and often unrewarding, especially for community clusters. In the workplace, investigations are more likely to find associations and even new causes, but still many clusters remain enigmatic. Despite this, there are many reasons for investigating clusters, including allaying community concern and identifying uncontrolled exposures. A structure for investigating clusters in the workplace is suggested.