首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   132篇
  免费   4篇
  国内免费   1篇
耳鼻咽喉   1篇
儿科学   2篇
妇产科学   18篇
基础医学   25篇
口腔科学   19篇
临床医学   9篇
内科学   19篇
皮肤病学   1篇
神经病学   5篇
特种医学   1篇
外科学   3篇
综合类   3篇
预防医学   10篇
眼科学   5篇
药学   7篇
中国医学   2篇
肿瘤学   7篇
  2023年   2篇
  2022年   3篇
  2021年   3篇
  2020年   1篇
  2019年   5篇
  2018年   2篇
  2017年   1篇
  2015年   3篇
  2014年   14篇
  2013年   2篇
  2012年   8篇
  2011年   10篇
  2010年   13篇
  2009年   5篇
  2008年   6篇
  2007年   10篇
  2006年   8篇
  2005年   7篇
  2004年   6篇
  2003年   6篇
  2002年   4篇
  2001年   2篇
  2000年   3篇
  1999年   1篇
  1998年   2篇
  1995年   2篇
  1993年   1篇
  1992年   1篇
  1991年   1篇
  1990年   1篇
  1989年   1篇
  1988年   1篇
  1987年   1篇
  1974年   1篇
排序方式: 共有137条查询结果,搜索用时 15 毫秒
101.
Carbohydrate metabolism was evaluated in twenty healthy women volunteers using a low-dose combination oral contraceptive (OC) containing 30 micrograms of ethinyl estradiol and 500 micrograms of dl-norgestrel by measurement of serum glucose and insulin levels during 3-hour oral glucose tolerance test (OGTT) before and after 3, 6 and 12 months of medication. There were no significant differences in body weight or blood pressure between pretreatment and posttreatment. Fasting serum glucose levels were slightly reduced, though not significantly, during all periods of treatment. But serum glucose levels were increased at 1, 2 and 3 hours in association with high insulin responses during OGTT in all periods of OC therapy, indicating mild to moderate insulin resistance. These data suggest that the low-dose combination OC used in the study exerts alterations on carbohydrate metabolism in women during one year of OC use.  相似文献   
102.
103.
Epidermoid cysts occurring within the brain stem are extremely rare and only nine such cases are reported in the literature. In this report, we report a case of Intrapontine epidermoid cyst in a young female patient.  相似文献   
104.
ObjectiveTo isolate and evaluate comparatively the binding efficacy of the mucilages obtained from the plants of Hibiscus rosasinensis and Okra (Abelmoschus esculentus).MethodsExtraction of mucilages from the leaves of Hibiscus and pods of Okra (Ladies finger) was carried out by a cold maceration process. The extracted mucilages were subjected to various physicochemical properties for its suitability as an excipient in the formulation of tablet dosage form. Different concentrations (10, 8, 5, 2 and 1% w/v) of binder solutions of Hibiscus and Okra were used for the formulation of tablets and the formulated tablets were evaluated by studying the standard parameters like diameter, thickness, weight variation, hardness, friability, disintegration and in vitro dissolution. Stability studies of the formulated tablets were conducted for four weeks.ResultsThe formulated tablets prepared using the mucilages of both Hibiscus and Okra had good appearance. The in vitro drug release profile of the tablets prepared using Okra mucilage had an optimum of 90% at a mucilage concentration of 1% w/v concentration mucilage itself within 4 h.ConclusionsAccording to the observations, the lower concentration levels of Okra can be used as an alternative binder to starch. The higher concentration levels of Okra mucilage show a slow and sustained release, and can be considered as an alternative natural excipient in the modified drug delivery systems. At the same time, the above natural excipient of Hibiscus mucilage could be used as a platform for prolonged release if its binder concentrations are increased.  相似文献   
105.
Auramine staining was done on 65 histopathological sections from different types of treated leprosy cases which were negative by Fite-Farraco stain. All the sections except one showed auramine positive organisms. The organisms were mostly coccoid except in BL/LL cases where beaded bacilli could be seen.  相似文献   
106.
In the United States, access to qualified homebirth providers varies by state, city, and community, and consistent, evidence-based guidelines for intrapartum management at home are not available. This article examines the similarities and differences in midwifery management of the intrapartum, postpartum, and neonatal course between planned homebirths and planned hospital births. Characteristics of qualified attendants, essential medical supplies and equipment, methods for maternal and fetal surveillance, and common intrapartum indications for transfer are discussed. Unique features of management of the healthy woman and baby in the home are described, as well as the process of consultation and/or referral for collaborative or medical management. Current evidence for the management of fetal intolerance of labor, meconium stained amniotic fluid, prolonged labor, postpartum hemorrhage, and the unstable newborn is discussed in the context of homebirth practice. Aspects of homebirth care that require cultural competency and affect the informed consent process are included. Homebirth practice may provide opportunities to increase the congruence between espoused midwifery philosophy and actual practice.  相似文献   
107.
PURPOSE: To develop Food Frequency Questionnaires (FFQs) and nutrient databases for urban and rural Indian populations with diverse dietary habits for the PURE (Prospective Urban and Rural Epidemiological) pilot study. PROCEDURE: 24 hour dietary recalls were obtained from 84 rural and 60 urban subjects. From a comprehensive food list, separate FFQs were developed for the two groups. Nutrient analysis of the FFQ required the selection of foods, development of recipes and application of these to cooked foods to develop a nutrient database. The FFQs were piloted in 80 urban and 77 rural subjects. Separately for each group, a stepwise regression method was used to identify foods contributing to a cumulative 90% of variance to total energy intake. Nutrient and food group intakes were compared using an independent t-test. MAIN FINDINGS: The urban and the rural FFQs contained 129 and 102 foods respectively, of which 82 foods were common to both. Fourteen urban foods and eight rural foods explained a cumulative 90% of variance for total energy intake. Daily intakes for most nutrients and food groups were two to three fold higher in the urban than in the rural group. CONCLUSIONS: In Indian populations with diverse dietary habits, using standard methods to develop separate FFQs can capture dietary intakes adequately. To develop nutrient databases, substitution of local food composition tables with data from other sources using standard methods to match foods can be adopted.  相似文献   
108.
109.
We describe the case of a 53-year-old woman with keratoconus who presented with a dislocated intrastromal corneal ring segment (ICRS) (Intacs) in the anterior chamber 3 weeks after surgery. To our knowledge, this is the first report of a late occurrence of postoperative anterior chamber dislocation of an ICRS and illustrates the need to consider the potential for such a complication.  相似文献   
110.
The dietary adequacy (qualitative and quantitative) of preschool children residing in rural areas near Mysore (a district in south India) was assessed by the 'Food frequency method' and '24-h recall method'. Food intake assessed in three different seasons revealed that their diets were predominantly cereal based with negligible quantity of protective foods. The overall nutrient intake was found to be inadequate, irrespective of the seasons. The adequacy level of the nutrients (cereal dependence) was found to be comparatively better in monsoon and winter seasons because of better labour opportunities and availability. Food consumption pattern showed no gender differences. The nutrient adequacy also varied by the age of the children. The influence of 'food expenditure' on the nutrient adequacy was not statistically significant. Nutritional status was found to be a factor influencing nutrient intake. Apart from age, nutritional status and food availability, feeding practices may also influence the nutrient intake of the preschool children.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号