高校游泳教学蛙泳腿常见错误动作分析     

满明辉 《湖北体育科技》2008,27(4):466-467

通过对湖州师范学院04级社会体育系45名学生蛙泳考试时的动作进行观察与统计得出，蛙泳腿部动作的常见错误，并从运动生物力学和流体力学角度进行分析，查找出学生蛙泳蹬腿动作的错误原因。  相似文献   

A Double-Edged Sword: Lactation Consultants' Perceptions of the Impact of Breast Pumps on the Practice of Breastfeeding          下载免费PDF全文

Kathleen M Buckley 《The Journal of perinatal education》2009,18(2):13-22

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Immunobiology of trophoblast cells     

Chandana Das  V. Senthil Kumar  Sayantani Basak  Surabhi Gupta  Sunesh Kumar 《Indian journal of clinical biochemistry : IJCB》2000,15(1):60-62

A female patient who had two primary cancers was investigated. Biochemical analysis of patient's serum for different parameters indicated an alteration in the metabolic process. Prognostically, the patient has shown favourable clinical features.  相似文献   

正确评价牛奶的营养价值     

李国平 《南宁职业技术学院学报》2005,10(2):22-24

牛奶并非以往人们宣传或想象的那样十全十美。牛奶虽然含有大量营养素,但也有它的不足之处,比如说乳糖、酪蛋白、脂肪球、维生素、抗体等也存在对健康不利的一面。  相似文献   

Some suggested cautions for pregnant women     

Flanders-Stepans MB 《The Journal of perinatal education》1999,8(3):36-37

Researchers continue to find new ways to protect the fetus and newborn from hazards posed by the environment through infectious and chemical agents. Research indicates that for women infected with toxoplasmosis during pregnancy, antibiotic treatment reduces the incidence of harmful effects this infection can have on the fetus. In addition, researchers have concluded that women's breast milk can be a source of lead exposure in infants. Maternal use of calcium supplements, however, can decrease the risk of lead transfer by reducing the mobilization of skeletal mineral stores.  相似文献   

Studies of biochemical parameters in breast cancer with and without metastasis     

Sandhya Mishra  D. C. Sharma  Praveen Sharma 《Indian journal of clinical biochemistry : IJCB》2004,19(1):71-75

The study includes 102 confirmed cases of carcinoma breast with and without metastasis and 25 healthy non-pregnant females. They were evaluated for blood levels of Ferritin, GSH, LDH, ALP, GGT and Hb before and 21 days after mastectomy. A significant increase (p<0.001) was observed in ferritin, LDH and GSH levels in cancer patients without metastasis in comparison to normal control subjects. Patients with metastasis had further elevated (p<0.001) levels of Ferritin, ALP and GGT as compared to non-metastatic patients. Mastectomy in both the cases i.e. with and without metastasis resulted in non-significant decrease in all the biochemical parameters suggesting that longer follow up could confirm post surgery decrease in the biochemical parameters. The results of the study suggest cost effective, usefulness of Ferritin, ALP, GGT and GSH/Hb ratio in differentiating breast cancer patients with and without metastasis which can be assayed in smaller laboratories.  相似文献   

Magnitude of multiplanar breast kinematics differs depending upon run distance     

Alexandra Milligan  Chris Mills  Jo Corbett  Joanna Scurr 《Journal of sports sciences》2015,33(19):2025-2034

Recommendations for breast support, dynamic breast pain assessment, and implications for sports performance have been made within breast biomechanics research; however, these studies have been based upon short exercise protocols (2–5 min). The aim of this study was to investigate the effect of breast support on multiplanar breast kinematics over a 5-kilometre run. Ten female participants (34D or 32DD) conducted two 5-kilometre runs, in a low and high breast support. Relative multiplanar breast kinematics were averaged over five gait cycles at six intervals of a 5-kilometre run. Increases in multiplanar breast kinematics were reported from the start to the end of the run, with the greatest rate of increase in breast kinematics reported within the first two kilometres of running. The greatest relative increases in breast range of motion (34%), velocity (33%), and acceleration (41%) were reported in the superioinferior direction at the fifth kilometre (33 min of running) in the high breast support. Key findings suggest that the run distance, and therefore run duration, employed for both fundamental research and product validation protocols should be carefully considered and it is suggested that running protocols for assessing breast biomechanics should exceed 7 min.  相似文献   

基于小波的图像增强算法在乳腺癌检测中的研究与应用     

熊思 《培训与研究》2010,(8):76-79

乳腺癌是现代女性最常见的恶性肿瘤之一,X光照片是一种在乳腺癌普查中广泛采用的检测手段。由于医学影像噪声大不清晰,检测结果往往不尽人意。本文以数字乳房X片图像为对象,研究了提高微钙化点的对比度的基于小波变换的图像增强算法。小波变换在时频域的多分辨率具有良好的空间域和频率域局部化特性。实验证明,基于小波多分辨率分析在抑制噪声的同时能对图像进行有效增强,提高图像的对比度,使钙化点的显示更为明显,提高了图像中病灶重要特征的可视化。基于小波的图像去噪和增强算法作为医学诊断的辅助手段有极其重要的意义。  相似文献