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1.
基于分形码技术的医学图像放大法   总被引:1,自引:0,他引:1  
基于分形图像编码的基本思想和分形吸引子的特点,通过对医学图像的局部进行分形编码,然后进行分形插值解码,实现了图像的局部放大.实验表明,这种方法是一种有效的局部图像放大方法,克服了现有方法的缺点.  相似文献   

2.
孙旭卫 《中国保健营养》2012,(12):1837-1838
目的对应用局部注射垂体后叶素与局部缝合联合的方法对前置胎盘剖宫产进行止血的临床效果进行研究分析。方法抽取94例前置胎盘剖宫产产妇病例,将其分为缝合组和联合组,平均每组47例。缝合组产妇采用局部缝合方式进行止血;联合组产妇采用局部注射垂体后叶素与局部缝合联合的方法进行止血。结果联合组产妇的出血量明显低于缝合组;止血时间明显短于缝合组;出现并发症的人数明显少于缝合组。结论应用局部注射垂体后叶素与局部缝合联合的方法对前置胎盘剖宫产进行止血的临床效果非常明显。  相似文献   

3.
目的?对中药局部治疗方法在牙周炎治疗中的作用进行研究.方法?选取90例病例,并采用不同的中药对牙周炎进行局部治疗,对治疗结果进行统计分析.结果?中药局部治疗方法在牙周炎的治疗中取得的积极效果.结论?中药局部治疗牙周炎具有明显的优势,起效快、副作用小,值得临床推广.  相似文献   

4.
目的探讨在使用局部麻醉药物后不可避免引发的并发症及防治方法。方法笔者结合多年的治疗经验对口腔局部麻醉并发症进行了总结回顾。结果在进行口腔局部麻醉时,由于药物本身或者器具等因素非常容易引起不同的并发症。结论充分了解口腔局部麻醉并发症的临床表现,掌握相应的处理办法,在发现并发症的情况时,应当及时采取相应的措施进行积极的维护,有助于提高治疗效果。  相似文献   

5.
目的 找出局部排风罩在设计、安装及应用等方面存在的问题,提出合理的改进办法,指导局部排风罩的正确应用。方法 (1)对20余个常用局部排风罩的设计、安装及应用情况进行现场调研与分析;(2)按照规定的方法对局部排风罩的罩口风速及控制点风速进行现场测试;(3)对局部排风罩旁操作位有害物浓度进行了现场采样及分析。结果(1)正确的局部排风罩型可以有效地提高控制效果;(2)排风罩距有害物发生源的距离较远、罩口未正对有害物发生源及罩口被遮挡、罩壳扩张角过小、罩口风速及吸人风速过低等是影响局部排风罩控制效果的主要原因;(3)罩口围挡可提高局部排风罩的控制效果。结论找出了局部排风罩存在的主要问题,为其正确应用提出了指导性的建议。  相似文献   

6.
王静 《中国卫生产业》2013,(16):41-41,43
目的对静脉滴注甘露醇致局部疼痛的原因进行分析,做好对静脉滴注甘露醇致局部疼痛的防治与护理。方法通过对该院住院的100例病人需静脉滴注甘露醇致局部疼痛的临床资料致痛原因进行分析。结果甘露醇的高渗性和微粒成分是引起疼痛的主要原因,约占73%,其他解剖生理因素、人体对疼痛的耐受程度、护理因素也占一定比例。结论做好对静脉滴注甘露醇致局部疼痛的预防和护理,对预防静脉滴注甘露醇致局部疼痛的发生有着重要意义。  相似文献   

7.
目的对某公司丝网印刷机局部通风排毒系统改造前后效果进行比较与评价,为今后改善类似作业环境提供依据。方法对丝网印刷室设备布局、存在的污染物种类进行分析;对丝网印刷机局部排风罩的罩型选择、设计、安装情况进行现场调研与分析;按照规定的方法对局部排风罩的罩口风速及控制点风速进行现场测试;对局部排风罩改进前后丝网印刷工序操作工位污染物浓度进行现场采样及分析。结果局部排风罩正确设计、安装及使用可以有效地提高控制效果;排风罩距污染物发生源的距离较远、罩口风速及控制点风速过低都会影响局部排风罩实际控制效果;罩口围挡可提高局部排风罩的控制效果;净化系统对污染物能否达标排放起到至关重要的作用。结论改造后局部通风排毒系统能够发挥正常功效,可以及时有效地将污染物捕集,通过净化系统将达标气体排放到大气中。  相似文献   

8.
某汽车制造企业装焊车间局部区域存在毒物扩散不畅问题,采用在局部焊接区域加设单独的吹吸式局部排风除尘系统,对焊接区域的有害物质进行净化处理,以提高有害物捕集效率。改造前后有害物质浓度检测对比显示,有效地控制了焊接有害烟气扩散,车间内空气质量得到改善,保护了作业工人身体健康。  相似文献   

9.
目的探讨地基米松与利多卡因联合应用于肿瘤化疗外渗的治疗效果。方法肿瘤化疗患者静脉外渗时立即停止输液或静脉注射,应用地塞米松+利多卡因进行局部封闭。结果应用地塞米松+利多卡因进行局部封闭患者局部红肿逐渐消失,无一例溃烂。讨论应用地基米松+利多卡因对肿瘤化疗静脉外渗者进行局部封闭,效果显著,减少病人的痛苦。  相似文献   

10.
目的:对医疗救护艇及其卫生装备进行局部优化改进,以提高海上医疗救护保障效能。方法:分析现有医疗救护艇及其卫生装备存在的不足,对药库所处机舱位置、箱体结构及艇体局部进行了优化设计及改进。结果:模拟结果显示,对救护艇局部和药箱结构的优化改进可有效提高海上医疗卫生装备的输送效率。结论:对现役救护艇局部及某型药箱结构的优化改进,可有效提高军队海上医疗救护效能,具有较高的实用性和可行性。  相似文献   

11.
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.  相似文献   

12.
This paper examines media coverage of 'breast cancer genetics', and explores its implications for public understanding. We present a content analysis of coverage in British newspapers and look at a variety of popular forms, including women's magazines, television soap opera and radio drama. Genetic/inherited risk receives a great deal of coverage across a wide range of media formats and outlets. Much of this attention has focused on individuals from 'high risk families' and dilemmas around prophylactic mastectomies. Through examining media coverage, combined with interviews with media personnel and their sources, we show why this story proved so attractive to the media and highlight the different production values which influence coverage. Finally, we introduce preliminary findings from focus group discussions to demonstrate how such 'human interest' framing has engaged audience attention and influenced public understandings. The paper concludes by highlighting the implications for analysing, predicting, and engaging with, media representations of science.  相似文献   

13.
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.  相似文献   

14.
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).  相似文献   

15.

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.  相似文献   

16.
17.
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.  相似文献   

18.
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.  相似文献   

19.
Occupational health hazards in mining: an overview   总被引:1,自引:0,他引:1  
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.  相似文献   

20.
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.  相似文献   

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