全文获取类型
收费全文 | 1806篇 |
免费 | 124篇 |
国内免费 | 7篇 |
专业分类
耳鼻咽喉 | 25篇 |
儿科学 | 18篇 |
妇产科学 | 27篇 |
基础医学 | 138篇 |
口腔科学 | 53篇 |
临床医学 | 163篇 |
内科学 | 767篇 |
皮肤病学 | 19篇 |
神经病学 | 260篇 |
特种医学 | 69篇 |
外科学 | 184篇 |
综合类 | 20篇 |
一般理论 | 1篇 |
预防医学 | 64篇 |
眼科学 | 9篇 |
药学 | 61篇 |
肿瘤学 | 59篇 |
出版年
2021年 | 18篇 |
2019年 | 25篇 |
2018年 | 28篇 |
2017年 | 22篇 |
2016年 | 14篇 |
2015年 | 26篇 |
2014年 | 40篇 |
2013年 | 53篇 |
2012年 | 52篇 |
2011年 | 61篇 |
2010年 | 52篇 |
2009年 | 52篇 |
2008年 | 84篇 |
2007年 | 98篇 |
2006年 | 103篇 |
2005年 | 85篇 |
2004年 | 98篇 |
2003年 | 79篇 |
2002年 | 65篇 |
2001年 | 54篇 |
2000年 | 59篇 |
1999年 | 42篇 |
1998年 | 18篇 |
1997年 | 11篇 |
1995年 | 9篇 |
1994年 | 17篇 |
1992年 | 37篇 |
1991年 | 46篇 |
1990年 | 30篇 |
1989年 | 31篇 |
1988年 | 35篇 |
1987年 | 31篇 |
1986年 | 46篇 |
1985年 | 48篇 |
1984年 | 40篇 |
1983年 | 25篇 |
1982年 | 16篇 |
1981年 | 24篇 |
1980年 | 27篇 |
1979年 | 34篇 |
1978年 | 21篇 |
1977年 | 13篇 |
1976年 | 11篇 |
1975年 | 13篇 |
1974年 | 19篇 |
1973年 | 16篇 |
1972年 | 13篇 |
1971年 | 9篇 |
1969年 | 9篇 |
1968年 | 9篇 |
排序方式: 共有1937条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
Michael L. Francavilla Ricardo Restrepo Kathryn W. Zamora Vijaya Sarode Stephen M. Swirsky Douglas Mintz 《Pediatric radiology》2014,44(8):910-925
The normal meniscus undergoes typical developmental changes during childhood, reaching a mature adult appearance by approximately 10 years of age. In addition to recognizing normal meniscal appearances in children, identifying abnormalities — such as tears and the different types of discoid meniscus and meniscal cysts, as well as the surgical implications of these abnormalities — is vital in pediatric imaging. The reported incidence of meniscal tears in adolescents and young adults has increased because of increased sports participation and more widespread use of MRI. This review discusses the normal appearance of the pediatric meniscus, meniscal abnormalities, associated injuries, and prognostic indicators for repair. 相似文献
5.
Smadar Cohen-Atsmoni Akiva Tamir Yona Avni Israel E. Priel Yehudah Roth 《Indian journal of otolaryngology and head and neck surgery》2015,67(2):196-199
Acquired tracheoesophageal fistula (TEF) is a challenging, life threatening condition. It most commonly appears in critically ill patients requiring prolonged mechanical ventilation, who cannot withstand open neck or chest surgery. An endoscopic technique could be better tolerated by these patients. We present our experience using a cardiac Amplatzer ASD septal occluder for an endoscopic TEF repair in ventilation-dependent patients. Two high risk patients underwent the procedure under general anesthesia and close respiratory monitoring. In one patient the device was inserted through the trachea and in the other through the esophagus. In both cases fistula closure was achieved for different periods of time allowing the patients a temporary relief of symptoms. The procedure was well tolerated by the patients, and no significant adverse effect documented. The technique was successful as a temporary solution for unstable patients with TEFs and should be considered as a treatment modality for similar patients. 相似文献
6.
7.
Plasma cell gingivitis was identified during the early 1970s as an allergic reaction to a component in a chewing gum. The clinical picture was described as bright erythema of the entire gingiva, loss of stippling and generalized swelling. Today, many allergens appear to be responsible for this problem. This report presents an unusual case of soft-tissue plasmacytosis in a totally edentulous patient, which may have been related to the use of a household and kitchen cleaning solution on the prostheses. 相似文献
8.
J. De Vries H. Murtomaa M. Butler H. Cherrett P. Ferrillo M. B. Ferro C. Gadbury-Amyot N. K. Haden M. Manogue J. Mintz J. E. Mulvihill B. Murray A. Nattestad D. Nielsen E. Ogunbodede H. Parkash F. Plasschaert M. T. Reed R. L. Rupp S. Tandon B. Wang S. Wang T. Yucel R. W. Valachovic A. Watkinson D. Shanley 《European journal of dental education》2008,12(S1):167-175
9.
Sita M. Damaraju Benjamin R. Mintz J. Genevieve Park Ankur Gandhi Sunil Saini Joseph A. Molnar 《International wound journal》2022,19(1):188-201
Clinical application of skin substitute is typically a two-stage procedure with application of skin substitute matrix to the wound followed by engraftment of a split-thickness skin graft (STSG). This two-stage procedure requires multiple interventions, increasing the time until the wound is epithelialised. In this study, the feasibility of a one-stage procedure by combining bioengineered collagen-chondroitin-6-sulfate (DS1) or decellularised fetal bovine skin substitute (DS2) with autologous skin cell suspension (ASCS) in a porcine full-thickness wound healing model was evaluated. Twelve full-thickness excisional wounds on the backs of pigs received one of six different treatments: empty; ASCS; DS1 with or without ASCS; DS2 with or without ASCS. The ASCS was prepared using a point-of-care device and was seeded onto the bottom side of DS1, DS2, and empty wounds at 80 000 cells/cm2. Wound measurements and photographs were taken on days 0, 9, 14, 21, 28, 35, and 42 post-wounding. Histological analysis was performed on samples obtained on days 9, 14, 28, and 42. Wounds in the empty group or with ASCS alone showed increased wound contraction, fibrosis, and myofibroblast density compared with other treatment groups. The addition of ASCS to DS1 or DS2 resulted in a marked increase in re-epithelialisation of wounds at 14 days, from 15 ± 11% to 71 ± 20% (DS1 vs DS1 + ASCS) or 28 ± 14% to 77 ± 26 (DS2 vs DS2 + ASCS) despite different mechanisms of tissue regeneration employed by the DS used. These results suggest that this approach may be a viable one-stage treatment in clinical practice. 相似文献
10.