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   4801篇
  免费   205篇
  国内免费   41篇
耳鼻咽喉   11篇
儿科学   49篇
妇产科学   450篇
基础医学   460篇
口腔科学   22篇
临床医学   396篇
内科学   429篇
皮肤病学   162篇
神经病学   216篇
特种医学   121篇
外科学   458篇
综合类   594篇
预防医学   1114篇
眼科学   9篇
药学   337篇
  1篇
中国医学   113篇
肿瘤学   105篇
  2024年   6篇
  2023年   51篇
  2022年   121篇
  2021年   164篇
  2020年   170篇
  2019年   154篇
  2018年   172篇
  2017年   162篇
  2016年   173篇
  2015年   125篇
  2014年   303篇
  2013年   349篇
  2012年   307篇
  2011年   357篇
  2010年   292篇
  2009年   299篇
  2008年   267篇
  2007年   252篇
  2006年   208篇
  2005年   161篇
  2004年   131篇
  2003年   116篇
  2002年   92篇
  2001年   70篇
  2000年   70篇
  1999年   49篇
  1998年   47篇
  1997年   38篇
  1996年   27篇
  1995年   33篇
  1994年   24篇
  1993年   19篇
  1992年   27篇
  1991年   14篇
  1990年   14篇
  1989年   13篇
  1988年   8篇
  1987年   7篇
  1986年   12篇
  1985年   17篇
  1984年   19篇
  1983年   12篇
  1982年   13篇
  1981年   16篇
  1980年   12篇
  1979年   10篇
  1977年   7篇
  1976年   6篇
  1973年   10篇
  1972年   6篇
排序方式: 共有5047条查询结果,搜索用时 31 毫秒
1.
2.
目的探讨女性难治性膀胱过度活动症患者心理弹性状况及保护性因素,为改善其身心健康提供依据。方法采用心理弹性量表、症状自评量表、艾森克人格问卷、社会支持量表、焦虑及抑郁量表对80例女性难治性膀胱过度活动症患者进行问卷调查。结果女性难治性膀胱过度活动症患者心理弹性得分为(54.10±8.27)分,显著低于国内常模(P<0.05)。患者的一般情况(病程、年龄、文化程度)对心理弹性的预测作用不明显(R2=0.14,F=18.10),当社会支持、SCL-90、人格特质、SAS、SDS进入方程后,对患者的心理弹性具有较明显的预测作用(R2=0.67,△R2=0.46,F=115.22)。结论女性难治性膀胱过度活动症患者心理弹性较差,社会支持、SCL-90、人格特质、焦虑抑郁情绪是其重要的影响因素,应重视患者存在的心理问题,发掘心理弹性的保护性因素并积极干预,促进其身心健康。  相似文献   
3.
HIV risk in vulnerable groups such as itinerant male street labourers is often examined via a focus on individual determinants. This study provides a test of a modified Information-Motivation-Behavioral Skills (IMB) model to predict condom use behaviour among male street workers in urban Vietnam. In a cross-sectional survey using a social mapping technique, 450 male street labourers from 13 districts of Hanoi, Vietnam were recruited and interviewed. Collected data were first examined for completeness; structural equation modelling was then employed to test the model fit. Condoms were used inconsistently by many of these men, and usage varied in relation to a number of factors. A modified IMB model had a better fit than the original IMB model in predicting condom use behaviour. This modified model accounted for 49% of the variance, versus 10% by the original version. In the modified model, the influence of psychosocial factors was moderately high, whilst the influence of HIV prevention information, motivation and perceived behavioural skills was moderately low, explaining in part the limited level of condom use behaviour. This study provides insights into social factors that should be taken into account in public health planning to promote safer sexual behaviour among Asian male street labourers.  相似文献   
4.
Street-connected youth in Kenya are a population potentially at risk of HIV transmission, yet little is known about their perceptions and experiences of sexually transmitted infections (STIs), despite their living in an HIV endemic region. We sought to elucidate the language and sociocultural factors rooted in street life that impact on street-connected young people’s knowledge of and perceptions about the prevention and transmission of STIs, and their diagnosis and treatment, using qualitative methods in western Kenya. We conducted a total of 25 in-depth interviews and 5 focus-group discussions with 65 participants aged 11–24 years in Eldoret, Kenya. Thematic analysis was conducted and data were coded according to themes and patterns emergent until saturation was reached. In general, street-connected young people knew of STIs and some of the common symptoms associated with these infections. However, there were many misconceptions regarding transmission and prevention. Gender inequities were prominent, as the majority of men described women as individuals who spread STIs due to unhygienic practices, urination and multiple partners. Due to misconceptions, gender inequity and lack of access to youth-friendly healthcare there is an urgent need for community-based organisations and healthcare facilities to introduce or augment their adolescent sexual and reproductive health programmes for vulnerable young people.  相似文献   
5.
The purpose of this study was to evaluate sexual function in women referred to a urogynecology practice. All new patients were mailed an optional female sexual function index (FSFI) in conjunction with their history forms; other sexual function information was obtained during the physician interview. Over 6 months, four hundred fifty new patients were enrolled. Of these, 243 (54%) were not sexually active. Reasons listed for sexual inactivity included partner problems/no partner (32%), low desire (14%), prolapse (10%), and pain (10%). There were several differences between sexually active and non-sexually active participants; however, after a multivariate analysis, only age, marital status, and stage/grade 1–2 of prolapse remained significant. One hundred nine sexually active patients completed the FSFI; the majority was sexually active two to four times per month. Female sexual dysfunction was noted in 70 (64%) patients. Lowest scores were noted for the domain of desire, followed by arousal, orgasm, lubrication, satisfaction, and pain. Reduced frequency of intercourse was the only factor significantly associated with dysfunction. Ninety-four percent were not embarrassed by the survey. Overall, sexual inactivity is common in patients presenting for urogynecologic care. Those that are sexually active report low rates of sexual activity and high rates of sexual dysfunction. Most sexually active patients will accept a sexual function questionnaire as part of their routine assessment.This research was presented at the American College of Obstetricians and Gynecologists annual clinical meeting, May 10, 2005, San Francisco, CA, USA.  相似文献   
6.
老年女性2型糖尿病肾病的骨密度及相关因素分析   总被引:1,自引:0,他引:1  
2型糖尿病(T2DM)和骨质疏松症的发病率越来越高,它们之间有无关系越来越引起人们的重视,本研究探讨了老年女性2型糖尿病肾病(DN)的骨矿物质密度(BMD)变化与相关因素,报道如下。1对象与方法1.1研究对象按1999年WHO诊断标准确诊为T2DM的≥60岁女性114例,年龄60~75岁,平均(66.3±  相似文献   
7.
Abstract Migraine without aura is typically considered a female condition. The purpose of this study was to determine if there have been any changes in the female-to-male ratio of the disease over time. We included in the study all patients with migraine without aura (n=3457) referred to the Parma University Headache Centre between 1976 and 1995. They were divided into subgroups with respect to gender and year-range of onset of migraine (before 1960, in the 1960s, in the 1970s, in the 1980s, and between 1990 and 1995). Gender ratio ranged from 3.6:1 (in patients with onset before 1960) to 2.8:1 (in patients with onset in the 1980s), with no statistically significant changes during the observation period.  相似文献   
8.
Female urinary incontinence is a common but underreported condition. Initial investigation and treatment can in most cases be undertaken without urodynamic or other detailed tests. History by the use of validated symptom and quality of life questionnaires is key to the initial investigation. Initial treatment includes pelvic floor muscle training (PFMT) regardless of the type of incontinence; lifestyle interventions and bladder retraining, anticholinergics and serotonin/noradrenaline reuptake inhibitors (e.g. duloxetine) are also included depending on the type of symptoms. In mixed incontinence the predominant symptom should be treated first. When this initial treatment is ineffective, further investigation should be offered prior to specialised treatment. Urodynamics should be considered for all patients prior to surgery. Imaging and cystoscopy to exclude pathology, for example in elderly patients with an overactive bladder, are also necessary. Newer surgical interventions should be offered after careful consideration of the risk:benefit ratio for each individual woman and the amount of evidence that is currently available to support their use.  相似文献   
9.
性服务工作者性病和艾滋病的干预研究   总被引:2,自引:0,他引:2  
李真  田丽闪 《中国热带医学》2007,7(7):1098-1099,1126
目的 了解性工作者的性病/艾滋病知识、态度、信念、行为等现状,积极探索对该人群进行预防性病、艾滋病及行为干预的有效办法,为今后在更大范围的高危人群中进行干预提供科学依据.方法 成立专职高危干预队伍,设计借鉴其他地区经验,深入目标人群进行系列外展服务,利用干预前后封闭式调查问卷评价干预效果.结果 发放干预前后问卷各522份,收回前后有效问卷387份.通过外展服务,娱乐场所从业人员对性病史滋病预防知识知晓率明显提高,对安全套及安全性行为预防性病艾滋病的传播的信念和态度有明显转变.结论 对娱乐场所从业人群开展系列专业外展服务可以提高该人群的防病意识,提升对性病史滋痛的知晓率,是高危人群干预的有效方法.  相似文献   
10.
目的:探讨膀胱三角区壁瓣成形尿道治疗女性外伤性尿道损伤的疗效。方法:自膀胱颈后唇向上,取梯字形壁瓣,形成锥状管,经膀胱颈口,自阴道前壁外拉至外阴部,在原尿道外口处固定,替代尿道。结果:3例随访8年,1例6年,1例5年,平均随访7年,均排尿通畅,无尿失禁和尿道狭窄。结论:女性外伤性尿道缺损,应用膀胱三角区壁瓣形成锥状管替代尿道法治疗,手术简单,对患者打击小,成功率高,远期效果好。  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