全文获取类型
收费全文 | 80248篇 |
免费 | 8181篇 |
国内免费 | 5445篇 |
专业分类
耳鼻咽喉 | 782篇 |
儿科学 | 1425篇 |
妇产科学 | 727篇 |
基础医学 | 6573篇 |
口腔科学 | 1665篇 |
临床医学 | 10552篇 |
内科学 | 8705篇 |
皮肤病学 | 873篇 |
神经病学 | 2569篇 |
特种医学 | 2970篇 |
外国民族医学 | 15篇 |
外科学 | 7444篇 |
综合类 | 18588篇 |
现状与发展 | 25篇 |
一般理论 | 3篇 |
预防医学 | 7787篇 |
眼科学 | 1638篇 |
药学 | 9213篇 |
100篇 | |
中国医学 | 7182篇 |
肿瘤学 | 5038篇 |
出版年
2024年 | 387篇 |
2023年 | 1332篇 |
2022年 | 3404篇 |
2021年 | 4203篇 |
2020年 | 3492篇 |
2019年 | 2288篇 |
2018年 | 2312篇 |
2017年 | 2709篇 |
2016年 | 2210篇 |
2015年 | 3612篇 |
2014年 | 4543篇 |
2013年 | 5095篇 |
2012年 | 7215篇 |
2011年 | 7793篇 |
2010年 | 6227篇 |
2009年 | 5248篇 |
2008年 | 5677篇 |
2007年 | 5277篇 |
2006年 | 4679篇 |
2005年 | 4006篇 |
2004年 | 2767篇 |
2003年 | 2361篇 |
2002年 | 1859篇 |
2001年 | 1370篇 |
2000年 | 1138篇 |
1999年 | 720篇 |
1998年 | 343篇 |
1997年 | 351篇 |
1996年 | 274篇 |
1995年 | 231篇 |
1994年 | 197篇 |
1993年 | 107篇 |
1992年 | 102篇 |
1991年 | 66篇 |
1990年 | 83篇 |
1989年 | 41篇 |
1988年 | 44篇 |
1987年 | 46篇 |
1986年 | 9篇 |
1985年 | 14篇 |
1984年 | 8篇 |
1983年 | 11篇 |
1982年 | 5篇 |
1981年 | 4篇 |
1980年 | 4篇 |
1979年 | 3篇 |
1958年 | 1篇 |
1957年 | 1篇 |
1953年 | 1篇 |
1935年 | 1篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
Yu Jinbo Chen Xiaohong Wang Yaqiong Liu Zhonghua Shen Bo Teng Jie Zou Jianzhou Ding Xiaoqiang 《International urology and nephrology》2021,53(4):785-795
International Urology and Nephrology - It is unclear which time-points of intradialytic blood pressure (BP) best predict prognosis. Thus, it is important to assess the association between different... 相似文献
62.
Ghoreifi Alireza Basin Michael F. Ghodoussipour Saum Bazargani Soroush T. Amini Erfan Aslzare Mohammad Cai Jie Miranda Gus Sugeir Shihab Bhanvadia Sumeet Schuckman Anne K. Daneshmand Siamak Lumb Philip Djaladat Hooman 《International urology and nephrology》2021,53(9):1827-1833
International Urology and Nephrology - The aim of this study is to evaluate the intra/perioperative fluid management and early postoperative outcomes of patients who underwent radical cystectomy... 相似文献
63.
Feng Zhang Yingmei Wang Yuying Wang Xinli Wang Dawei Zhang Xiong Zhao Runmin Jiang Yu Gu Guifang Yang Xin Fu Longyong Xu Longxia Xu Liting Zheng Jing Zhang Zengshan Li Qingguo Yan Jianguo Shi Albert Roessner Zhe Wang Qing Li Jing Ye Charlie Degui Chen Shuangping Guo Jie Min 《Journal of bone and mineral research》2021,36(10):1931-1941
64.
目的:观察督脉敷贴利斯的明透皮贴剂治疗轻中度阿尔茨海默病(AD)的临床疗效。方法:采用随机数字表法将90例轻中度AD患者分为督脉敷贴组、常规敷贴组、多奈哌齐组各30例。多奈哌齐组给予多奈哌齐片治疗,常规敷贴组给予常规敷贴利斯的明透皮贴剂治疗,督脉敷贴组给予督脉敷贴利斯的明透皮贴剂治疗。比较3组治疗前后老年性痴呆认知评定量表(ADAS-Cog)、简易智力状态检查量表(MMSE)、老年性痴呆临床总体印象量表(ADAS-CGIC)、老年性痴呆日常生活活动量表(ADAS-ADL)评分,并记录3组不良反应发生情况。结果:治疗12周、24周后,3组ADAS-CGIC、ADAS-Cog评分均较治疗前降低(P<0.05),MMSE、ADAS-ADL评分升高(P<0.05),且督脉敷贴组治疗12周、24周后ADAS-CGIC、ADAS-Cog评分低于常规敷贴组、多奈哌齐组(P<0.05),MMSE、ADAS-ADL评分高于低于常规敷贴组、多奈哌齐组(P<0.05)。常规敷贴组治疗24周后ADAS-CGIC、ADAS-Cog评分低于多奈哌齐组(P<0.05),MMSE、ADA... 相似文献
65.
Xu Li Siming Li Zhihong Chi Chuanliang Cui Lu Si Xieqiao Yan Lili Mao Bin Lian Bixia Tang Xuan Wang Xue Bai Li Zhou Yan Kong Jie Dai Jun Guo Xinan Sheng 《Urologic oncology》2021,39(1):75.e1-75.e8
PurposeTo investigate the clinical characteristics, chemosensitivity, and outcome of metastatic upper tract urothelial carcinoma (UTUC).Patients and MethodsRecords of patients with metastatic UTUC since January 2005 were retrieved from a database that included clinical and survival data. Statistical analyses including survival and multivariate analyses of factors were respectively performed by the Kaplan-Meier method and Cox proportional hazard model.ResultsA total of 250 consecutive UTUC cases were evaluated. There were 56 patients (22.4%) with initially diagnosed stage IV disease. The most common metastatic sites were lung (39.6%), distant lymph nodes (39.2%), bone (19.6%), liver (18.0%), and adrenal gland (7.2%), respectively, and the local recurrence rate was 10.4%. Two hundred thirteen patients received first-line chemotherapy. The overall response rate was only 28.7% and the median progression-free survival time was only 5.0 months. The overall survival time of the cohort was 18.0 months. Multivariate analyses showed that initially diagnosed stage IV disease, number of metastatic organs ≥3, no response to chemotherapy and cycles of chemotherapy ≤2 were adverse prognosticators for overall survival.ConclusionUTUC presented to be more prone to metastasize than locally recur and thought to have low chemosensitivity. Stage IV disease at initial diagnosis, number of metastatic organs, response and cycles of chemotherapy were independent prognosticators for metastatic UTUC. 相似文献
66.
Craig C. Akoh Jie Chen Rishin Kadakia Young Uk Park Hyongnyun Kim Samuel B. Adams 《Foot and Ankle Surgery》2021,27(4):381-388
BackgroundThe prevalence of osteoarthritis of the hallux metatarsophalangeal joint (MTPJ) is 1 in 40 people over the age of 50. Surgical treatment options for MTPJ arthritis include joint preservation, joint resurfacing, and arthrodesis. Hallux MTPJ implants have evolved over the past several decades, but are associated with various complications. The aim of this study was to examine the MAUDE database to determine reported adverse events for hallux MTPJ implants.Materials and methodsThe US Food and Drug Administration’s (FDA) Manufacturer and User Facility Device Experience (MAUDE) database was reviewed from 2010 to 2018 to review voluntary reported adverse event reports for approved implants within the United States. We recorded the type of adverse event and excluded duplicate reports and those extracted from already published literature.ResultsAmong 64 reported hallux MTPJ implant adverse events, the most common modes of adverse events were component loosening (34%), infection (14.1%), component fracture (9.4%), inflammation (9.4%), and allergic reaction (7.8%). Regarding implant type, Cartiva SCI had the highest percentage of adverse events (23.4%), followed by Arthrosurface ToeMotion (20.3%), Ascension MGT (12.5%), Arthrosurface HemiCAP® (10.9%), Futura primus (9.4%), and Osteomed Reflexion (6.3%). There was an increase in reported adverse events after 2016. The MAUDE database does not report the total incidence of implant insertion.ConclusionOur study of the MAUDE database demonstrated that component loosening and infection are the most common modes of adverse events for hallux MTPJ implants. Cartiva accounted for one-fourth of the implant-related adverse events during our study period, followed by ToeMotion, and Ascension MGT implants. Continued reporting of adverse events will improve our understanding on short and long-term complications of various hallux MTPJ implants.Level of evidenceLevel IV; Case Series from Large Database Analysis; Treatment Study. 相似文献
67.
Wang Ying Yan Jie Chen JingYi Wang ChunFeng Lin YingChun Wu Yong Hu Rong 《Quality of life research》2021,30(7):1891-1901
Quality of Life Research - To compare the anxiety, depression and explore their relationship to quality of life (QoL) among adult acute leukemia (AL) patients and family caregivers (FCs) in China.... 相似文献
68.
本文报导了在正交偏光镜下,对人体胆汁液晶的光学性质的研究,结果表明,胆汁液晶是一种非均质体,在正交偏光镜下,呈现出特殊的干涉图样和四次消光现象,光性符号是单轴正性的,干涉色级是一级灰白,双折射率Δn=0.011-0.017。 相似文献
69.
70.