全文获取类型
收费全文 | 1186篇 |
免费 | 68篇 |
国内免费 | 3篇 |
专业分类
耳鼻咽喉 | 4篇 |
儿科学 | 37篇 |
妇产科学 | 28篇 |
基础医学 | 178篇 |
口腔科学 | 24篇 |
临床医学 | 98篇 |
内科学 | 300篇 |
皮肤病学 | 22篇 |
神经病学 | 48篇 |
特种医学 | 21篇 |
外科学 | 99篇 |
综合类 | 20篇 |
预防医学 | 72篇 |
眼科学 | 28篇 |
药学 | 74篇 |
中国医学 | 8篇 |
肿瘤学 | 196篇 |
出版年
2023年 | 12篇 |
2022年 | 32篇 |
2021年 | 56篇 |
2020年 | 34篇 |
2019年 | 44篇 |
2018年 | 48篇 |
2017年 | 35篇 |
2016年 | 39篇 |
2015年 | 38篇 |
2014年 | 43篇 |
2013年 | 60篇 |
2012年 | 106篇 |
2011年 | 94篇 |
2010年 | 42篇 |
2009年 | 32篇 |
2008年 | 45篇 |
2007年 | 49篇 |
2006年 | 39篇 |
2005年 | 36篇 |
2004年 | 33篇 |
2003年 | 20篇 |
2002年 | 27篇 |
2001年 | 13篇 |
2000年 | 21篇 |
1999年 | 13篇 |
1998年 | 10篇 |
1997年 | 9篇 |
1996年 | 12篇 |
1995年 | 9篇 |
1994年 | 5篇 |
1993年 | 8篇 |
1992年 | 12篇 |
1991年 | 14篇 |
1990年 | 12篇 |
1989年 | 11篇 |
1988年 | 12篇 |
1987年 | 12篇 |
1986年 | 11篇 |
1985年 | 10篇 |
1983年 | 15篇 |
1982年 | 4篇 |
1981年 | 7篇 |
1980年 | 4篇 |
1979年 | 7篇 |
1978年 | 7篇 |
1977年 | 13篇 |
1976年 | 11篇 |
1975年 | 7篇 |
1974年 | 8篇 |
1973年 | 9篇 |
排序方式: 共有1257条查询结果,搜索用时 15 毫秒
41.
42.
43.
Mohammadi Abdolreza Khatami Fatemeh Azimbeik Zohreh Khajavi Alireza Aloosh Mehdi Aghamir Seyed Mohammad Kazem 《Wiener Medizinische Wochenschrift》2022,172(9):220-226
Wiener Medizinische Wochenschrift - Infection prevention protocols are the accepted standard to control nosocomial infections. These protective measures intensified after the coronavirus 2019... 相似文献
44.
Hamid Nomani Ali Aidy Asad Vaisi-Raygani Amir Kiani Zohreh Rahimi 《Renal failure》2016,38(9):1455-1461
Introduction: There are some evidences indicating DNA damage by oxidant and mutant agents has an essential role in the chronic renal failure and end stage renal disease (ESRD). To investigate the possible association of GSTs variants with ESRD, we investigated the frequency of GST- T1, M1, and P1 genotypes, and the level of malondialdehyde (MDA) in patients with ESRD.Materials and methods: The present case-control study consisted of 136 ESRD patients treated with maintenance hemodialysis and 137 gender- and age-matched, unrelated healthy controls from the population of west of Iran. The GST- T1, M1, and P1 genotypes were determined in all individuals using multiplex-PCR and PCR-RFLP. The level of MDA was measured by high-performance liquid chromatography (HPLC).Results: We found that GSTM1 and GSTT1 null genotypes (GSTT1?/GSTM1?) increased the risk of ESRD by 1.8 times (p?<?0.001) and the increased risk of ESRD for GSTM-null (T1+-M1?) genotype was 3.04 times (p?=?0.002). ESRD patients carriers the GST (GSTM1-null?+?GSTT1-null?+?GST-null) genotypes compared to GST normal genotype increased the risk of ESRD by 3.3 (p?<?0.001) times. ESRD patients carriers of GST-null, GSTM1-null, and GSTT1-null genotypes had greater MDA concentration compared with the same genotypes of control subjects. Our results indicated that the GST-null allele (GSTT1-null/GSTM1-null) is a risk factor for ESRD and carriers of this allele have high levels of MDA.Conclusion: Our findings indicate that oxidative stress, impairment of the antioxidant system and abnormal lipid metabolism may play a role in the pathogenesis and progression of ESRD and its related complications. These data suggest that patients with ESRD are more susceptible to vascular diseases. 相似文献
45.
Insomnia associated with valerian and melatonin usage in the 2002 National Health Interview Survey 总被引:1,自引:0,他引:1
STUDY OBJECTIVE: Many people use dietary supplements or herbal products to help them sleep. We analyzed the associations between melatonin use and insomnia and between valerian use and insomnia in a representative sample of the United States population. DESIGN AND PARTICIPANTS: The data reported upon here were collected in the 2002 Alternative Health/Complementary and Alternative Medicine (CAM) Supplement to the National Health Interview Survey. This was a survey of 31,044 personal interviews that constituted an age-representative and socioeconomically representative sample of the civilian noninstitutionalized population of the United States. RESULTS: Of the survey sample, 5.9% used valerian and 5.2% used melatonin. Of those using valerian, 29.9% endorsed insomnia as 1 reason for CAM use, and, of melatonin users, 27.5% endorsed insomnia as 1 reason for CAM use. Relatively greater use occurred in individuals under age 60 years. The decision to use such substances was made in consultation with a health care provider less than half of the time. CONCLUSIONS: Large segments of the United States population used valerian or melatonin for insomnia within the year preceding the survey, and usage typically fell outside the purview of the health care system. 相似文献
46.
Nahid Dehghan-Nayeri Zohreh Khakbazan Faezeh Ghafoori 《Disability and health journal》2018,11(2):274-280
Background
Multiple sclerosis (MS) is a debilitating and life-long disease that affects the sexual life of people. However, in Iran little attention has been paid to the sexual life of women with MS.Objective
The aim of this study was to understand the sexual life and experiences of Iranian women with multiple sclerosis.Methods
A qualitative study was designed, and face-to-face semi-structured interviews were conducted with twenty-five women with MS. The interviews were tape-recorded and transcribed verbatim. Data were analyzed using a content analysis approach and through MAXQDA.10 software.Results
The main themes identified during the analysis were: (1) limited sexual activity, (2) sex life behind the mask, and (3) lack of sexual support during the rehabilitation process. In fact, the participants in this study expressed that their sexual activity was negatively affected by MS. They were trying to hide their sexual problems, and present themselves to their husbands differently from what they are, which can be considered as sex life behind the mask. Furthermore, Iranian women with MS received little sexual support from the rehabilitation team.Conclusions
Hiding sexual problems from husbands is thought to be a common practice and behavior among Iranian women with MS. Understanding this insight and its consequences can assist the rehabilitation team in helping and solving sexual problems of women with MS. Moreover, sexual awareness and education should be extended, especially among the husbands of women with MS. 相似文献47.
48.
Soudabeh Balarastaghi Zahra Khashaiarmanesh Pouran Makhdoumi Seyedeh Hoda Alavizadeh Zohreh Sameie Moghadam Kobra Shirani 《Toxin reviews》2018,37(2):117-122
Toxic elements are commonly used in cosmetic products for many reasons like coloring pigments or blocking ultraviolet light; however, the level of some metals exceed specific concentration which can cause serious safety issues. This study aims to evaluate the content of lead and cadmium in samples of sunscreen and foundation creams, most frequently used brands of cosmetic products, in Iran. Concentration of lead in the sunscreens and foundation creams was lower than that of USFDA standards. The content of cadmium was higher than Europe Union standard. Effort must be made to inform the users about the harmful consequences of cosmetics. 相似文献
49.
50.