全文获取类型
收费全文 | 591085篇 |
免费 | 69690篇 |
国内免费 | 4015篇 |
专业分类
耳鼻咽喉 | 8482篇 |
儿科学 | 14802篇 |
妇产科学 | 13818篇 |
基础医学 | 88234篇 |
口腔科学 | 19164篇 |
临床医学 | 54950篇 |
内科学 | 125690篇 |
皮肤病学 | 18960篇 |
神经病学 | 49984篇 |
特种医学 | 23027篇 |
外国民族医学 | 82篇 |
外科学 | 91891篇 |
综合类 | 11795篇 |
现状与发展 | 6篇 |
一般理论 | 156篇 |
预防医学 | 30295篇 |
眼科学 | 14512篇 |
药学 | 48297篇 |
1篇 | |
中国医学 | 4451篇 |
肿瘤学 | 46193篇 |
出版年
2022年 | 3888篇 |
2021年 | 8345篇 |
2020年 | 8546篇 |
2019年 | 15833篇 |
2018年 | 17452篇 |
2017年 | 16422篇 |
2016年 | 18052篇 |
2015年 | 19801篇 |
2014年 | 22546篇 |
2013年 | 26017篇 |
2012年 | 25356篇 |
2011年 | 25135篇 |
2010年 | 20802篇 |
2009年 | 16204篇 |
2008年 | 19758篇 |
2007年 | 19411篇 |
2006年 | 18637篇 |
2005年 | 17205篇 |
2004年 | 15844篇 |
2003年 | 14730篇 |
2002年 | 13737篇 |
2001年 | 31645篇 |
2000年 | 31966篇 |
1999年 | 26084篇 |
1998年 | 6277篇 |
1997年 | 5116篇 |
1996年 | 4647篇 |
1995年 | 4244篇 |
1994年 | 3765篇 |
1993年 | 3398篇 |
1992年 | 17268篇 |
1991年 | 16019篇 |
1990年 | 15211篇 |
1989年 | 14938篇 |
1988年 | 13500篇 |
1987年 | 12895篇 |
1986年 | 11930篇 |
1985年 | 11060篇 |
1984年 | 7459篇 |
1983年 | 6091篇 |
1982年 | 3087篇 |
1979年 | 5914篇 |
1978年 | 3697篇 |
1977年 | 3317篇 |
1975年 | 2899篇 |
1974年 | 3381篇 |
1973年 | 3148篇 |
1972年 | 3103篇 |
1971年 | 2973篇 |
1969年 | 2711篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
11.
12.
Amy Y. Zhang Christopher Burant Alex Z. Fu Gerald Strauss Donald R. Bodner Lee Ponsky 《Journal of psychosocial oncology》2020,38(2):210-227
AbstractPurpose: We examined underlying psychosocial processes of a behavioral treatment for urinary incontinence (UI) of prostate cancer survivors.Design: Secondary analysis of data collected from a clinical trial.Sample: Two hundred forty-four prostate cancer survivors who participated in a clinical trial of behavioral intervention to UI as intervention or control subjects.Methods: The participants had a 3-month behavioral intervention or usual care and were followed up for an additional 3?months. They were assessed at baseline, 3, and 6?months. Latent growth curve models were performed to examine trajectories of each study variable and relationships among the variables.Findings: Increasing self-efficacy and social support were significantly and independently associated with more reduction of urinary leakage frequency over time.Implications for psychosocial oncology: Providing problem-solving skills and social support, including peer support, are essential for empowering patients to reduce UI. 相似文献
13.
Laparoscopic surgery has several advantages over traditional surgery because it has been shown to be less invasive. The next logical step in the evolution of minimally invasive surgery may be to eliminate all abdominal incisions. The natural orifices provide a port of entry via the gastrointestinal tract to the peritoneal cavity. This approach would require the creation of a perforation, which is considered to be a major complication of endoscopy with significant morbidity and mortality. However, there are several recent studies that have described the technical feasibility and safety of a per‐oral transgastric approach to the peritoneal cavity using conventional endoscopes. Theoretically, this approach could reduce postoperative abdominal wall pain, wound infection, hernia formation, and adhesions. This article aims to summarize the current status of transgastric surgery, currently referred to as natural orifice transluminal endoscopic surgery (NOTES), and to address some of its future challenges. 相似文献
14.
N. SUVAJD
I V. EMERIKI‐MARTINOVI . ARANOVI M. PETROVI M. POPOVI V. ARTIKO M. UPI I. ELEZOVI 《International journal of laboratory hematology》2006,28(5):317-320
We report the case of a littoral‐cell angioma of the spleen, a recently described benign vascular tumour, whose imaging and pathological characteristics have been discussed only by a few authors. The diagnosis was made after elective splenectomy. The CT images, scintigraphy and histological specimens are presented, and differential diagnoses discussed. 相似文献
15.
Lalia Y. Ibrahim Krank P. DiFilippo Geremy E. Steed Manuel D. Cerqueira 《Journal of nuclear cardiology》2006,13(6):855-866
Conclusion Several quality-control measures take place before (patient and camera preparation) and during SPECT acquisition to achieve
high-quality images. Not uncommonly, technologists and physicians are left with suboptimal images that have to be addressed
to reach the “right answer” for patient diagnosis and hence management. In many cases patients may be reimaged, especially
if the problem is detected early, but in other cases either the patient has left the nuclear laboratory or there is an inevitable
problem that, even with reimaging, will not be resolved. In these situations the technologist and physician have to seek the
available techniques to obtain the best images possible. These resources are discussed in this issue as an aid in quality
control to obtain the best possible images. 相似文献
16.
Nikki Lee 《Journal of human lactation》2006,22(1):11; author reply 11-11; author reply 12
17.
18.
19.
P E Santos E Piontelli Y R Shea M L Galluzzo S M Holland M E Zelazko S D Rosenzweig 《Medical mycology》2006,44(8):749-753
Infections due to Penicillium species other than P.marneffei are rare. We identified a boy with X-linked chronic granulomatous disease (X-CGD) with a pulmonary nodule and adjacent rib osteomyelitis caused by Penicillium piceum. The only sign of infection was an elevated sedimentation rate. P. piceum was isolated by fine needle aspirate and from excised infected tissues. Surgical removal and one year of voriconazole treatment were very well tolerated and led to complete recovery. Microbiological, microscopic and molecular studies support the fungal diagnosis. P. piceum should be considered as a relevant pathogen in immunocompromised patients. 相似文献
20.