全文获取类型
收费全文 | 5676篇 |
免费 | 466篇 |
国内免费 | 16篇 |
专业分类
耳鼻咽喉 | 51篇 |
儿科学 | 289篇 |
妇产科学 | 192篇 |
基础医学 | 817篇 |
口腔科学 | 54篇 |
临床医学 | 676篇 |
内科学 | 1136篇 |
皮肤病学 | 93篇 |
神经病学 | 503篇 |
特种医学 | 135篇 |
外国民族医学 | 3篇 |
外科学 | 488篇 |
综合类 | 31篇 |
一般理论 | 4篇 |
预防医学 | 642篇 |
眼科学 | 115篇 |
药学 | 467篇 |
中国医学 | 23篇 |
肿瘤学 | 439篇 |
出版年
2023年 | 47篇 |
2022年 | 25篇 |
2021年 | 146篇 |
2020年 | 92篇 |
2019年 | 160篇 |
2018年 | 166篇 |
2017年 | 146篇 |
2016年 | 142篇 |
2015年 | 140篇 |
2014年 | 221篇 |
2013年 | 247篇 |
2012年 | 412篇 |
2011年 | 407篇 |
2010年 | 236篇 |
2009年 | 221篇 |
2008年 | 381篇 |
2007年 | 357篇 |
2006年 | 346篇 |
2005年 | 343篇 |
2004年 | 364篇 |
2003年 | 304篇 |
2002年 | 256篇 |
2001年 | 92篇 |
2000年 | 66篇 |
1999年 | 73篇 |
1998年 | 82篇 |
1997年 | 51篇 |
1996年 | 35篇 |
1995年 | 30篇 |
1994年 | 41篇 |
1993年 | 40篇 |
1992年 | 35篇 |
1991年 | 22篇 |
1990年 | 34篇 |
1989年 | 34篇 |
1988年 | 35篇 |
1987年 | 25篇 |
1986年 | 20篇 |
1985年 | 27篇 |
1984年 | 17篇 |
1983年 | 27篇 |
1982年 | 14篇 |
1980年 | 13篇 |
1979年 | 14篇 |
1978年 | 12篇 |
1977年 | 10篇 |
1976年 | 11篇 |
1975年 | 19篇 |
1974年 | 18篇 |
1970年 | 10篇 |
排序方式: 共有6158条查询结果,搜索用时 93 毫秒
91.
92.
Abdel-Naser Y. Elzouki Soad I. Buhjab Akram Alkialani Salah Habel Annie J. Sasco 《Arab Journal Of Gastroenterology》2012,13(2):85-88
Background and study aimsThe aim of this study was to determine the pattern of histologically-proven gastric cancer in Eastern Libya and explore its association with Helicobacter pylori infection.Patients and methodsThe registries of the Departments of Histopathology, Faculty of Medicine, Benghazi University and Oncology, Al-Jomhoria Hospital, Benghazi, were reviewed for cases with primary gastrointestinal cancer from January 2000 to December 2002 (sole Histopathology and Oncology Departments in Eastern Libya). Slides of hematoxylin and eosin stain of gastric cancer patients were re-stained to detect H. pylori. The American Joint Committee on Cancer Tumor, Node, Metastasis staging was used for clinical and pathologic staging. Gastric cancer biopsy materials were classified into intestinal or diffuse type according to Lauren criteria.ResultsOne hundred and fourteen cases of gastric cancer were diagnosed. Tumor stages were: 2 (14%), 3 (21%), 4 (57%) and unknown (8%). Most common site of involvement was the antrum (48%). Diffuse adenocarcinoma occurred in 56 patients (49.1%), intestinal adenocarcinoma in 46 (40.4%) and malignant gastric lymphoma in 12 (10.5%). The overall frequency of H. pylori infection was 63.2% (72/114), more frequent in intestinal adenocarcinoma (71.7%) and malignant lymphoma (66.6%) than diffuse adenocarcinoma (55.3%). The frequency of gastric cancer increased throughout the three years of study.ConclusionThe majority of the patients were diagnosed in locally advanced or metastatic stage. Clearly more efforts need to be given to early detection. We showed a stronger association of H. pylori infection with intestinal type gastric adenocarcinoma and malignant lymphoma than diffuse adenocarcinoma suggesting that H. pylori infection is the most probable causal factor of gastric cancer in this part of Libya. 相似文献
93.
94.
For persons living with HIV, health-related quality of life (HRQOL) may be threatened by physical and mental conditions but may be protected by positive psychological traits. We performed an exploratory look at the risk and protective factors for HRQOL in older adults living with HIV. Cross-sectional analyses of baseline data from the Rush Center of Excellence on Disparities in HIV and Aging (CEDHA), a community-based cohort of persons ages ≥50 living with HIV (n?=?176) were performed. Analyses examined the relationship between risk/protective factors and two outcomes (i.e., self-reported health status [SRHS] and the healthy days index [HDI]). Having good/excellent health was associated with being a non-smoker (p?=?0.002), greater purpose in life (p?=?0.006), higher education (p?=?0.007), fewer depressive symptoms (p?=?0.004), fewer disabilities (p?=?0.000), and less loneliness (p?=?0.002) in bivariate analyses. Males (p?=?0.03) and African Americans/Blacks (p?=?0.03) reported higher HDI. Fewer depressive symptoms (p?=?0.000), disabilities (p?=?0.002), adverse life events (p?=?0.0103), and loneliness (p?=?0.000) were associated with higher HDI in bivariate analyses. In a logistic regression model, greater purpose in life, fewer disabilities, and being a non-smoker were associated with better SRHS after adjusting for covariates. For African Americans/Blacks, having fewer depressive symptoms and disabilities were associated with higher HDI after adjusting for covariates. Disabilities, depression, smoking status, race/ethnicity, and purpose in life were significantly associated with HRQOL. Findings support the need for research to examine the influence of cultural interpretations of life quality and focus on promoting physical function, smoking cessation, and psychological wellness in persons aging with HIV. 相似文献
95.
96.
97.
98.
99.
100.