全文获取类型
收费全文 | 747篇 |
免费 | 62篇 |
国内免费 | 15篇 |
专业分类
耳鼻咽喉 | 4篇 |
儿科学 | 43篇 |
妇产科学 | 6篇 |
基础医学 | 105篇 |
口腔科学 | 15篇 |
临床医学 | 90篇 |
内科学 | 141篇 |
皮肤病学 | 18篇 |
神经病学 | 19篇 |
特种医学 | 119篇 |
外科学 | 42篇 |
综合类 | 109篇 |
预防医学 | 41篇 |
眼科学 | 5篇 |
药学 | 38篇 |
中国医学 | 2篇 |
肿瘤学 | 27篇 |
出版年
2023年 | 3篇 |
2022年 | 3篇 |
2021年 | 9篇 |
2020年 | 4篇 |
2019年 | 9篇 |
2018年 | 5篇 |
2017年 | 12篇 |
2016年 | 17篇 |
2015年 | 20篇 |
2014年 | 27篇 |
2013年 | 21篇 |
2012年 | 35篇 |
2011年 | 18篇 |
2010年 | 35篇 |
2009年 | 39篇 |
2008年 | 37篇 |
2007年 | 32篇 |
2006年 | 18篇 |
2005年 | 16篇 |
2004年 | 10篇 |
2003年 | 12篇 |
2002年 | 16篇 |
2001年 | 21篇 |
2000年 | 8篇 |
1999年 | 20篇 |
1998年 | 46篇 |
1997年 | 42篇 |
1996年 | 32篇 |
1995年 | 21篇 |
1994年 | 29篇 |
1993年 | 22篇 |
1992年 | 11篇 |
1991年 | 10篇 |
1990年 | 9篇 |
1989年 | 14篇 |
1988年 | 13篇 |
1987年 | 28篇 |
1986年 | 9篇 |
1985年 | 13篇 |
1984年 | 8篇 |
1983年 | 7篇 |
1982年 | 14篇 |
1981年 | 7篇 |
1980年 | 5篇 |
1978年 | 8篇 |
1977年 | 4篇 |
1976年 | 9篇 |
1975年 | 6篇 |
1973年 | 2篇 |
1971年 | 2篇 |
排序方式: 共有824条查询结果,搜索用时 15 毫秒
71.
India has a high prevalence of diabetes mellitus and the numbers are increasing at an alarming rate. In India alone, diabetes is expected to increase from 40.6 million in 2006 to 79.4 million by 2030. Studies have shown that the prevalence of diabetes in urban Indian adults is about 12.1%, the onset of which is about a decade earlier than their western counterparts and the prevalence of Type 2 diabetes is 4–6 times higher in urban than in rural areas. The risk factors peculiar for developing diabetes among Indians include high familial aggregation, central obesity, insulin resistance and life style changes due to urbanization. Screening for gestational diabetes and impaired glucose tolerance among pregnant women provides a scope for primary prevention of the disease in mothers as well as in their children. The problems of obesity and impaired glucose tolerance (IGT) (important predisposing factors) are not confined to adults alone but children are also increasingly getting affected. Most long standing macro and micro vascular complications are also more common among Indian diabetics as compared to other races and ethnic groups. A strong familial clustering of diabetic nephropathy among Indian Type 2 diabetics has also been noted. Clustering of cardiovascular risk factor like Syndrome X is common among urban Indians. The rising incidence of diabetes and its complications are going to pose a grave health care burden on our country. Timely effective interventions/measures and screening tests for complications at the time of diagnosis becomes imperative not only for early detection, but also to prevent progression to end stage disease. Screening for gestational diabetes among pregnant women would also go a long way in primary prevention of the disease. Life style changes/interventions and drugs like rosiglitazone are the current strategies that can prevent and/or delay the onset of diabetes. Simple interventional strategies like “Eat less, Eat on time and Walk more” can go a long way in preventing these chronic disorders among present as well as in the future generations. 相似文献
72.
73.
Background
A spinal cord injury is devastating and produces profound changes in the life style of the individual and his family. It is difficult to predict bladder and sphincter behaviour on the basis of clinical somatic neurological deficits.Methods
A prospective study of 100 spinal cord injury patients was conducted to establish a bladder management protocol. The urodynamic variables were assessed frequently. Clean Intermittent Catheterization (CIC) along with antimuscarinic drugs was instituted and response monitored. Nonresponders were offered Intradetrusor Botulinum toxin.Result
Spinal shock lasted for upto six months and only 8% could be converted to CIC during the acute phase. A total of 82% patients underwent three to four urodynamic studies which revealed an increase in cystometric capacity and a decrease in the maximum detrusor pressures. This lowered the incidence of incontinence episodes and prevented upper urinary tract damage. Botulinum toxin provided only temporary relief.Conclusion
Aggressive management of neurogenic bladder (NB) dysfunction is a crucial component of the rehabilitation programme for spinal cord injury patients. Repeated urodynamic studies are an essential aid in managing the evolving nature of the bladder dysfunction. Meticulous bladder management protocol can prevent upper urinary tract complications.Key Words: Spinal cord injury, Neurogenic bladder, Urodynamics 相似文献74.
To examine the effects of Momordica charantia on glucose uptake and adiponectin secretion in adipose cells, 3T3-L1 adipocytes were treated with three concentrations (0.2, 0.3 and 0.4mg/ml) of water and ethanol extracts of Momordica charantia fruit and seeds alone and in combination with either 0.5nM or 50nM insulin. The treatment combination of 0.2mg/ml water extract and 0.5nM insulin was associated with significant (p<0.05) increases in glucose uptake (61%) and adiponectin secretion (75%) over control levels. The ethanol extract was not associated with an increase in glucose uptake; however, a dose-dependent decrease in basal glucose uptake and insulin-mediated glucose uptake was observed with the ethanol extract in combination with 50nM insulin. In the absence of insulin, no effects on glucose uptake were observed in adipocytes exposed to the water extracts whereas the highest concentration (0.4mg/ml) of the ethanol extract was associated with a significant (p<0.05) decrease in glucose uptake relative to controls. The present results indicate that water-soluble component(s) in Momordica charantia enhance the glucose uptake at sub-optimal concentrations of insulin in 3T3-L1 adipocytes, which is accompanied by and may be a result of increased adiponectin secretion from the 3T3-L1 adipocytes. 相似文献
75.
76.
77.
We report 8 infants with immediate hypersensitivity reactions to foods (milk, egg, or peanut), occurring at the first-known exposure. Each developed symptoms within the first hour, but these generally settled within 2 hours. Sensitisation to the food concerned was demonstrated by positive immediate allergen skin prick tests in every case. Symptoms experienced included irritability, erythematous rash, urticaria, angio-oedema, vomiting, rhinorrhoea, and cough. Five infants were being followed prospectively and 4 were clinically tolerant of the food by age 16 months. The most likely route of sensitisation was via breast milk. None of the infants experienced similar reactions while being breast fed, suggesting that the reaction was dose dependent. As 5 out of a group of 80 infants being followed prospectively developed an immediate reaction at their first known exposure to a food, this appeared to be a not uncommon presentation of food hypersensitivity in infancy. 相似文献
78.
RL Broadhead AS Muula 《Malawi medical journal : the journal of Medical Association of Malawi》2001,13(3):6-10
Ten years have now passed since the College of Medicine of the University of Malawi was opened. The College''s Curriculum is firmly based on community needs. We describe the genesis and implementation of the curriculum of the College of Medicine and how it has persisted over the past ten years. The challenges that have so far been met are outlined. 相似文献
79.
Surgical bacterial infections and antimicrobial susceptibility patterns at Lilongwe Central Hospital
RM Banda AS Muula GR Gwaza DC Namarika KC Ng'oma FE Chintolo H Yamakazi AP Muyco 《Malawi medical journal : the journal of Medical Association of Malawi》2001,13(3):27-29
A cross sectional study was done between October 1999 and February 2000 to determine antimicrobial susceptibility patterns of consecutive bacterial isolates of 102 clinical samples among surgical in-patients at Lilongwe Central Hospital (LCH), Malawi. Antimicrobial susceptibility was determined using comparative disc diffusion techniques. 83 (81.4%) samples were culture positive for bacterial growth while 19 (18.6%) grew nothing. Of the 93 culture positive specimens, Staphylococcus aureus was the predominant organism 43(51.8%) followed by Proteus species 8(9.6%) and E. coli 7(8.4%). Overall, 98.6% of all isolates tested against ciprofloxacin were susceptible, and against gentamicin and flucloxacin were 84.8% and 66.7% respectively. 59.3% of isolates tested against chloramphenicol were resistant. We recommend a review on the use of chloramphenicol as first-line antimicrobial therapy among surgical in-patients at Lilongwe Central Hospital. We also recommend restricted use of antimicrobials so as to minimise development of drug resistance. Periodic susceptibility studies are necessary to guide judicious use of antibiotics. 相似文献
80.
Occupational therapists play a significant role in the discharge process and are often exposed to ethically challenging decision-making. This paper examines the moral basis of discharge planning, relating it to the four fundamental bio-ethical principles of respect for autonomy, beneficence, non-maleficence and justice. Using a case study design, data was collected from 10 occupational therapists and two elder care patients using the critical incident approach, as part of a wider study to determine their perceptions of discharge planning and multidisciplinary teamwork. Direct observation of interaction within multidisciplinary teams was also undertaken. The findings from the research suggest that occupational therapists are unintentionally breaching these four principles and therefore their code of ethics and professional conduct. It is suggested that further research is needed to determine how occupational therapists overcome these challenges. Furthermore, this research has important implications for education establishments regarding the teaching of ethics to occupational therapists. 相似文献