全文获取类型
收费全文 | 19810篇 |
免费 | 210篇 |
国内免费 | 145篇 |
专业分类
耳鼻咽喉 | 118篇 |
儿科学 | 439篇 |
妇产科学 | 262篇 |
基础医学 | 3004篇 |
口腔科学 | 232篇 |
临床医学 | 1399篇 |
内科学 | 3021篇 |
皮肤病学 | 155篇 |
神经病学 | 1685篇 |
特种医学 | 851篇 |
外科学 | 2690篇 |
综合类 | 1840篇 |
一般理论 | 30篇 |
预防医学 | 1340篇 |
眼科学 | 157篇 |
药学 | 1606篇 |
28篇 | |
中国医学 | 52篇 |
肿瘤学 | 1256篇 |
出版年
2023年 | 111篇 |
2022年 | 330篇 |
2021年 | 809篇 |
2020年 | 505篇 |
2019年 | 772篇 |
2018年 | 1351篇 |
2017年 | 836篇 |
2016年 | 1207篇 |
2015年 | 1305篇 |
2014年 | 1447篇 |
2013年 | 1914篇 |
2012年 | 1420篇 |
2011年 | 765篇 |
2010年 | 1301篇 |
2009年 | 1008篇 |
2008年 | 668篇 |
2007年 | 653篇 |
2006年 | 538篇 |
2005年 | 492篇 |
2004年 | 366篇 |
2003年 | 126篇 |
2002年 | 59篇 |
2001年 | 82篇 |
2000年 | 160篇 |
1999年 | 158篇 |
1998年 | 172篇 |
1997年 | 135篇 |
1996年 | 98篇 |
1995年 | 55篇 |
1994年 | 55篇 |
1993年 | 69篇 |
1992年 | 49篇 |
1991年 | 48篇 |
1990年 | 54篇 |
1989年 | 56篇 |
1988年 | 58篇 |
1987年 | 41篇 |
1986年 | 35篇 |
1985年 | 27篇 |
1984年 | 31篇 |
1982年 | 34篇 |
1980年 | 23篇 |
1971年 | 19篇 |
1970年 | 19篇 |
1968年 | 31篇 |
1957年 | 20篇 |
1948年 | 22篇 |
1947年 | 24篇 |
1946年 | 21篇 |
1930年 | 22篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
5.
Hui-Ju Ch’ang 《World journal of hepatology》2015,7(16):2029-2040
The success of sorafenib in prolonging survival of patients with hepatocellular carcinoma (HCC) makes therapeutic inhibition of angiogenesis a component of treatment for HCC. To enhance therapeutic efficacy, overcome drug resistance and reduce toxicity, combination of antiangiogenic agents with chemotherapy, radiotherapy or other targeted agents were evaluated. Nevertheless, the use of antiangiogenic therapy remains suboptimal regarding dosage, schedule and duration of therapy. The issue is further complicated by combination antiangiogenesis to other cytotoxic or biologic agents. There is no way to determine which patients are most likely respond to a given form of antiangiogenic therapy. Activation of alternative pathways associated with disease progression in patients undergoing antiangiogenic therapy has also been recognized. There is increasing importance in identifying, validating and standardizing potential response biomarkers for antiangiogenesis therapy for HCC patients. In this review, biomarkers for antiangiogenesis therapy including systemic, circulating, tissue and imaging ones are summarized. The strength and deficit of circulating and imaging biomarkers were further demonstrated by a series of studies in HCC patients receiving radiotherapy with or without thalidomide. 相似文献
6.
7.
Sania Amr Magdy Garas Dina N. K. Boulos Doa’a A. Saleh Irene A. Jillson Christopher A. Loffredo 《Journal of substance use》2019,24(3):341-345
Background: Egyptian street youth use substances including tobacco, illicit drugs, and pharmaceutical drugs. To understand the circumstances, including adverse childhood experiences, that place adolescents at risk for engaging in substance use, we conducted in-depth interviews among a sample of Egyptian street children. Methods: From youth residing at or attending Caritas, a non-profit organization, which provides shelter and education to street youth, seven girls and twelve boys, aged 12–18 years, participated in open-ended, in-depth interviews. Results: Eight out of the 19 participants reported family history (early exposure) to substance use; and seven of them were initiated by either a family member (sibling), friend or coworker. Most of the participants reported a history of conflict with or abuse (verbal or physical) by their parents or siblings, or stressful situations at home; they used substance(s) to alleviate their stress. Few attended school, and some were forced to work and help their family. Conclusions: Among Egyptian youth, adverse childhood experiences, such as poverty, child abuse, and family substance use, challenge somewhat susceptible youths and lead them to the path of substance use and addiction. Prevention intervention should be multifaceted, culturally adaptable, and primarily targeting the social environment during childhood. 相似文献
8.
Gordon K. B. Saburov V. O. Koryakin S. N. Gulidov I. A. Fatkhudinov T. Kh. Arutyunyan I. V. Kaprin A. D. Solov’ev A. N. 《Bulletin of experimental biology and medicine》2022,173(2):281-285
Bulletin of Experimental Biology and Medicine - Fast neutron therapy, which previously has demonstrated effective results, but along with a large number of complications, can again be considered a... 相似文献
9.
10.