全文获取类型
收费全文 | 3580篇 |
免费 | 159篇 |
国内免费 | 18篇 |
专业分类
耳鼻咽喉 | 138篇 |
儿科学 | 164篇 |
妇产科学 | 133篇 |
基础医学 | 221篇 |
口腔科学 | 201篇 |
临床医学 | 366篇 |
内科学 | 830篇 |
皮肤病学 | 52篇 |
神经病学 | 184篇 |
特种医学 | 166篇 |
外科学 | 804篇 |
综合类 | 59篇 |
一般理论 | 3篇 |
预防医学 | 128篇 |
眼科学 | 124篇 |
药学 | 100篇 |
中国医学 | 4篇 |
肿瘤学 | 80篇 |
出版年
2024年 | 4篇 |
2023年 | 22篇 |
2022年 | 31篇 |
2021年 | 96篇 |
2020年 | 56篇 |
2019年 | 73篇 |
2018年 | 100篇 |
2017年 | 61篇 |
2016年 | 105篇 |
2015年 | 122篇 |
2014年 | 115篇 |
2013年 | 156篇 |
2012年 | 280篇 |
2011年 | 266篇 |
2010年 | 142篇 |
2009年 | 137篇 |
2008年 | 295篇 |
2007年 | 310篇 |
2006年 | 313篇 |
2005年 | 280篇 |
2004年 | 197篇 |
2003年 | 184篇 |
2002年 | 141篇 |
2001年 | 58篇 |
2000年 | 49篇 |
1999年 | 41篇 |
1998年 | 13篇 |
1997年 | 10篇 |
1996年 | 8篇 |
1995年 | 7篇 |
1994年 | 6篇 |
1993年 | 5篇 |
1992年 | 15篇 |
1991年 | 14篇 |
1990年 | 14篇 |
1988年 | 4篇 |
1986年 | 4篇 |
1984年 | 2篇 |
1982年 | 3篇 |
1980年 | 1篇 |
1977年 | 2篇 |
1976年 | 2篇 |
1975年 | 1篇 |
1973年 | 2篇 |
1971年 | 1篇 |
1970年 | 1篇 |
1969年 | 2篇 |
1966年 | 1篇 |
1960年 | 1篇 |
1927年 | 1篇 |
排序方式: 共有3757条查询结果,搜索用时 15 毫秒
1.
2.
3.
Irmak Karaca Suzan Güven Yılmaz Melis Palamar Halil Ateş 《Ocular immunology and inflammation》2020,28(6):947-951
ABSTRACT
Purpose
To investigate the effect of 1% tropicamide on anterior chamber aqueous flare (ACAF) measurements acquired with laser flare meter in patients with pseudoexfoliation. 相似文献4.
Evren Isci Halil Ibrahim Canter Abdullah Kecik 《European journal of plastic surgery》2007,30(1):45-46
Rabbits are the experimental animals of choice in many studies including flaps, wounds, and topical trials for new pharmacological
agents. Because the topical drugs and other materials used for dressing are irritating to the animal, they tend to remove
dressings, bandages, drapes, insensate flaps, and also topical drugs by scratching, licking, and biting if they are within
the reach of the animal. In this study, we report an easy to prepare, user-friendly, comfortable, and cheap dressing protector
called a dressing shield to prevent these problems. 相似文献
5.
Samet Ozlugedik Muge Ozcan Olca Basturk Orgun Deren Erkan Kaptanoglu G?khan Adanali Adnan Unal 《Skull base》2005,15(4):269-72; discussion 273
Ameloblastic carcinoma (AC) is an aggressive malignant epithelial odontogenic tumor. It may appear de novo or originate from a pre-existing ameloblastoma or odontogenic cyst. To our knowledge, an AC that originates from the anterior skull base has not been reported before in the English literature. We report a case of an AC that originated from the anterior skull base and invaded the dura of the anterior fossa and discuss its clinical course and treatment. 相似文献
6.
Huban Atilla Oya Tekeli Kemal Ornek Figen Batioglu Atilla Halil Elhan Teksin Eryilmaz 《Journal of clinical neuroscience》2006,13(1):55-59
BACKGROUND: To evaluate transient pattern electroretinography (PERG) and pattern visual evoked potential (VEP) for the diagnosis, differential diagnosis and follow-up of optic nerve diseases. METHODS: Twenty-nine consecutive patients (14 female, 15 male) with the diagnosis of ischaemic optic neuropathy (n=14) and optic neuritis (n=15) were included in this study. Mean age of the patients with ischaemic optic neuropathy was 63.3+/-3.3 (60-78) years and the mean age of the patients with optic neuritis was 28.3+/-8.4 (19-43) years. In each patient ophthalmological examination and systemic evaluation were done and VEP and PERG were recorded. As a control group, VEP recordings of 35 healthy subjects were included. RESULTS: In the ischaemic optic neuropathy group (group 1), mean VEP amplitude (+/-SD) (1.96+/-0.95 microV) was found to be decreased significantly in the affected eyes in comparison to the control group and the unaffected eyes. The delay in latency (116.3+/-20.14 msec in the affected eyes compared with 101.31+/-6.19 msec in unaffected eyes) was statistically significant when compared with the healthy subjects. In the optic neuritis group (group 2), VEP amplitude was decreased (4.13+/-4.04 microV vs 6.97+/-3.35 microV and 6.97+/-4.43 microV) and latency was increased (122.59+/-20.09 msec vs 101.31+/-6.19 msec and 108.76+/-13.57 msec) in affected eyes significantly in comparison to the unaffected eyes and control group, respectively. Even though there were no significant differences for P50 latency and N95/P50 ratios between affected and unaffected eyes in both groups, N95 amplitude decreased significantly in the affected eyes of the ischaemic optic neuropathy patients and N95 latency was found to be decreased in optic neuritis patients. There was no correlation between VEP and PERG findings in both groups. CONCLUSION: VEP amplitude decreased significantly in ischaemic optic neuropathies while latency delay was more significant in patients with optic neuritis. PERG findings showed decreased N95 amplitude in ischemic optic neuropathy without associated latency changes. 相似文献
7.
8.
Effects of human amniotic fluid on cartilage regeneration from free perichondrial grafts in rabbits.
Güzin Ye?im Ozgenel Gülaydan Filiz Mesut Ozcan 《British journal of plastic surgery》2004,57(5):423-428
After the chondrogenic potential of free grafts of perichondrium was shown in several experimental studies, perichondrium has been used to reconstruct cartilage tissue in various clinical situations. This study investigates the effects of human amniotic fluid on neochondrogenesis from free perichondrial grafts in a rabbit model. Since this fluid contains high concentrations of hyaluronic acid, hyaluronic acid-stimulating activator, growth factors, and extracellular matrix precursors during the second trimester, it may have a stimulating effect on neochondrogenesis. Perichondrial grafts, measuring 20 x 20 mm2 were obtained from the ears of 144 New Zealand young rabbits and were sutured over the paravertebral muscles. The rabbits were randomly divided into three groups with 48 rabbits per group. In group 1, 0.3 ml human amniotic fluid, and in group 2, 0.3 ml saline were injected underneath the perichondrial grafts. Group 3 formed the control group in which no treatment was given. Histologically, neochondrogenesis was evaluated in terms of cellular form and graft thickness at 2, 4, 6, and 8 weeks after surgery. In group 1, the mature cartilage was generated quickly and the cartilage plate in this group was significantly thick and extensive when compared with groups 2 and 3 at 8 weeks ( p<0.05 ANOVA). In conclusion, our study shows that human amniotic fluid enhances neochondrogenesis from free perichondrial grafts. The rich content of hyaluronic acid and growth factors possibly participate in this result. 相似文献
9.
10.
Using diazepam and atropine before strabismus surgery to prevent postoperative nausea and vomiting: a randomized, controlled study. 总被引:4,自引:0,他引:4
OBJECTIVE: To evaluate the efficacy of diazepam and atropine sulfate premedication in preventing nausea and vomiting after strabismus surgery under general anesthesia. METHODS: Fifty children age 4 to 15 years who underwent strabismus surgery at Cukurova University Medical Faculty, Department of Ophthalmology, from February 2000 to June 2000 were randomized into 2 groups: 25 children in the control group did not receive premedication, whereas 25 children in the treatment group received premedication with 0.15 mg/kg diazepam and 0.015 mg/kg atropine sulfate. Occurrence of postoperative nausea and vomiting (PONV) was recorded. RESULTS: The incidence of PONV was lower in the premedicated group (P <.018, chi(2) test). CONCLUSIONS: It is concluded that diazepam and atropine sulfate premedication decreases nausea and vomiting after strabismus surgery. 相似文献