全文获取类型
收费全文 | 859篇 |
免费 | 37篇 |
国内免费 | 22篇 |
专业分类
耳鼻咽喉 | 2篇 |
儿科学 | 59篇 |
妇产科学 | 62篇 |
基础医学 | 79篇 |
口腔科学 | 17篇 |
临床医学 | 80篇 |
内科学 | 137篇 |
皮肤病学 | 8篇 |
神经病学 | 44篇 |
特种医学 | 168篇 |
外科学 | 76篇 |
综合类 | 34篇 |
预防医学 | 22篇 |
眼科学 | 27篇 |
药学 | 40篇 |
肿瘤学 | 63篇 |
出版年
2022年 | 4篇 |
2021年 | 12篇 |
2020年 | 10篇 |
2019年 | 10篇 |
2018年 | 8篇 |
2017年 | 5篇 |
2016年 | 10篇 |
2015年 | 16篇 |
2014年 | 22篇 |
2013年 | 22篇 |
2012年 | 27篇 |
2011年 | 24篇 |
2010年 | 19篇 |
2009年 | 24篇 |
2008年 | 32篇 |
2007年 | 45篇 |
2006年 | 41篇 |
2005年 | 18篇 |
2004年 | 27篇 |
2003年 | 18篇 |
2002年 | 15篇 |
2001年 | 25篇 |
2000年 | 15篇 |
1999年 | 22篇 |
1998年 | 36篇 |
1997年 | 27篇 |
1996年 | 29篇 |
1995年 | 24篇 |
1994年 | 22篇 |
1993年 | 26篇 |
1992年 | 27篇 |
1991年 | 9篇 |
1990年 | 17篇 |
1989年 | 17篇 |
1988年 | 14篇 |
1987年 | 17篇 |
1986年 | 20篇 |
1985年 | 15篇 |
1984年 | 20篇 |
1983年 | 13篇 |
1982年 | 11篇 |
1981年 | 11篇 |
1980年 | 16篇 |
1979年 | 4篇 |
1978年 | 9篇 |
1977年 | 12篇 |
1976年 | 15篇 |
1975年 | 5篇 |
1974年 | 8篇 |
1967年 | 4篇 |
排序方式: 共有918条查询结果,搜索用时 15 毫秒
41.
This review has presented current information regarding thromboprophylaxis in surgery, including pregnancy. Where feasible, references have included current consensus conference recommendations and reliable review articles. Orthopedic surgical thromboprophylaxis has intentionally been deleted, as this topic is well covered in other articles in this issue (EurJ Med Res 9(3), March 2004). 相似文献
42.
Stephens F Bick D 《Nursing standard (Royal College of Nursing (Great Britain) : 1987)》2002,16(44):62-4, 66-7
This article describes the aims and objectives of a small pilot audit project to evaluate the impact of guideline recommendations to reduce pressure ulcer development on practice and patient care. 相似文献
43.
Disseminated intravascular coagulation current concepts of etiology,pathophysiology, diagnosis,and treatment 总被引:8,自引:0,他引:8
Bick RL 《Hematology / Oncology Clinics of North America》2003,17(1):149-176
The pathophysiologic mechanisms and clinical and laboratory manifestations of DIC are complex, partly because of inter-relationships within the hemostasis system. Only by clearly understanding these extraordinarily complex pathophysiologic inter-relationships can the clinician and laboratory scientist appreciate the divergent and wide spectrum of often-confusing clinical and laboratory findings in patients with DIC. Many therapeutic decisions to be made are controversial and lack validation. Nevertheless, newer antithrombotic agents and agents that can block, blunt, or modify cytokine activity and the activity of vasoactive substances seem to be of value. The complexity and variable degree of clinical expression suggest that therapy should be individualized depending on the nature of DIC, the patient's age, etiology of DIC, site and severity of hemorrhage or thrombosis, and hemodynamics and other appropriate clinical parameters. 相似文献
44.
45.
James?Clarkson Cindy?Newton Debra?Bick Gill?Gyte Chris?Kettle Mary?Newburn Jane?Radford Richard?JohansonEmail author 《BMC pregnancy and childbirth》2001,1(1):4
Background
Some complications of childbirth (for example, faecal incontinence) are a source of social embarrassment for women, and are often under reported. Therefore, it was felt important to determine levels of complications (against established standards) and to consider obstetric measures aimed at reducing them. 相似文献46.
DP Southall WA Arrowsmith JR Oakley G McEnery RH Anderson EA Shinebourne 《Archives of disease in childhood》1979,54(10):776-779
Two neonates with arrhythmias and the long QT syndrome are described. The arrhythmias were detected in utero and both infants were apparently well after birth. The first infant, although well, had a bradycardia for the first 9 days of life. A normal heart rate was documented at 10 days but a prolonged QT interval was not appreciated on the ECG. He was discharged from hospital but died suddenly and unexpectedly 3 days later. A post-mortem examination failed to find a cause for his death which therefore fell into the category of the sudden infant death syndrome (SIDS). A retrospective analysis of the perinatal electrocardiogram showed a probable junctional rhythm with 2:1 conduction to the ventricle; the QT interval was prolonged at 0.52 seconds (QTC = 0.63). The second infant had a QT interval of 0.52 seconds (QTC = 0.54) and frequent ventricular premature beats on a 24-hour electrocardiogram. She was treated with propranolol and remains well 2 years later. Sudden infant death has often been described in the siblings of children with the long QT syndrome and one other report described a case of SIDS which was said to have had a prolonged QT interval on the perinatal ECG. This report, however, provides unquestionable evidence, in one case, of an association between the long QT syndrome and SIDS. 相似文献
47.
PACS: the silent revolution 总被引:5,自引:2,他引:5
More than 15 years ago the idea of a Picture Archiving and Communication System (PACS) and a filmless hospital was created.
In a PACS environment images are acquired, read, communicated and stored digitally. After many years of unsuccessful attempts
and prototype installations, the necessary hardware components for a successful PACS installation are now readily available.
However, software development is still lagging behind. Only very recently, software developers have realized that it is not
sufficient for PACS software to store, communicate and display images, but that PACS software should effectively support the
radiologist in the task of interpreting and communicating imaging findings through context-dependent default display arrangements,
work-flow management, radiological and hospital information systems integration, and computer-assisted diagnosis. This review
examines hard- and software requirements for efficient PACS operation, analyses costs and benefits, and discusses future developments.
Received: 26 October 1998; Revision received: 11 January 1999; Accepted: 4 February 1999 相似文献
48.
JKS Parihar SM DP Vats SM VSM RP Gupta TR Bera R Phooken A Singh 《Medical Journal Armed Forces India》2007,63(1):19-22
Background
Phaconit or ultra micro incision phacoemulsification cataract surgery involves phacoemulsification through a 0.9 millimetre sleeveless phaco tip and irrigating chopper followed by implantation of a rollable intraocular lens. The procedure leads to negligible astigmatism and faster visual recovery as compared to phacoemulsification with a foldable intraocular lens.Methods
This prospective study analysed 80 cases of sub millimetre phaconit surgery with implantation of rollable intraocular lenses(IOL) in 40 cases and acrylic foldable IOL in the remaining 40 cases. Evaluation of efficacy and adaptability of procedure, equipment settings, operative constraints, postoperative complications, keratometric and topographic evaluation of induced astigmatism with visual outcome and patient''s rehabilitation were studied.Results
The intraoperative complications were surge/ chamber collapse in 16 (20%), iris chaffing in one and corneal burns in two cases. All cases had an induced astigmatism of less than or equal to ± 0.25 D in four to six weeks after rollable IOL and ± 0.5 D to ± 0.75 D after acrylic IOL implantation. All patients had best-corrected visual acuity of 6/6 by third post operative day.Conclusion
Phaconit with rollable IOL is a perfect blend of surgical skill, application of technology and ultra thin IOL.Key Words: Phaconit, Ultra micro phaco, Submillimetre incision, Rollable IOL implantation 相似文献49.
DP Harji S Rastall C Catchpole R Bright-Thomas S Thrush 《Annals of the Royal College of Surgeons of England》2010,92(3):e20-e22
Breast infection and breast sepsis secondary to Pseudomonas aeruginosa is uncommon. We report two cases of pseudomonal breast infection leading to septic shock and abscess formation in women with non-responding breast infection. The management of breast infection is broad-spectrum antibiotics and ultrasound with aspiration of any collection. To treat breast infection effectively, the causative organism must be isolated to enable appropriate antibiotic therapy. 相似文献
50.
The effects of benzo(a)pyrene (BaP), a highly prevalent environmental carcinogen, on the ability of peritoneal exudate macrophages to produce the secretory immunomodulatory molecule interleukin-1 (IL-1) in vitro was examined. A dose-dependent increase in lipopolysaccharide stimulated IL-1 production concomitant with decreased cell viabilities was noted in macrophages cultured in the presence of BaP. Antibody responses which are suppressed in BaP dosed mice can be reconstituted in vitro by the addition of exogenous interleukin-1. These results indicate that one of the cellular targets of BaP induced immunosuppression may be cells of the macrophage-monocyte lineage. Furthermore, BaP induced suppression of antibody responsiveness may be a result of alterations in production of IL-1. 相似文献