全文获取类型
收费全文 | 1225篇 |
免费 | 37篇 |
国内免费 | 12篇 |
专业分类
耳鼻咽喉 | 1篇 |
儿科学 | 50篇 |
妇产科学 | 11篇 |
基础医学 | 82篇 |
口腔科学 | 33篇 |
临床医学 | 69篇 |
内科学 | 206篇 |
皮肤病学 | 30篇 |
神经病学 | 26篇 |
特种医学 | 109篇 |
外科学 | 199篇 |
综合类 | 268篇 |
预防医学 | 46篇 |
眼科学 | 4篇 |
药学 | 40篇 |
肿瘤学 | 100篇 |
出版年
2023年 | 2篇 |
2022年 | 6篇 |
2021年 | 17篇 |
2020年 | 8篇 |
2019年 | 11篇 |
2018年 | 16篇 |
2017年 | 9篇 |
2016年 | 8篇 |
2015年 | 37篇 |
2014年 | 27篇 |
2013年 | 25篇 |
2012年 | 30篇 |
2011年 | 27篇 |
2010年 | 53篇 |
2009年 | 52篇 |
2008年 | 43篇 |
2007年 | 61篇 |
2006年 | 68篇 |
2005年 | 56篇 |
2004年 | 72篇 |
2003年 | 40篇 |
2002年 | 45篇 |
2001年 | 32篇 |
2000年 | 39篇 |
1999年 | 51篇 |
1998年 | 44篇 |
1997年 | 54篇 |
1996年 | 57篇 |
1995年 | 33篇 |
1994年 | 34篇 |
1993年 | 10篇 |
1992年 | 17篇 |
1991年 | 20篇 |
1990年 | 14篇 |
1989年 | 18篇 |
1988年 | 18篇 |
1987年 | 13篇 |
1986年 | 14篇 |
1985年 | 12篇 |
1984年 | 17篇 |
1983年 | 9篇 |
1982年 | 8篇 |
1981年 | 9篇 |
1980年 | 6篇 |
1978年 | 6篇 |
1977年 | 12篇 |
1976年 | 3篇 |
1975年 | 2篇 |
1965年 | 1篇 |
1964年 | 1篇 |
排序方式: 共有1274条查询结果,搜索用时 31 毫秒
41.
Female sterilisation is an important component of National Family Welfare Programme. The target group is best motivated during the puerperium for such a procedure. However laparoscopic sterilisation which has got some distinct advantages, is not technically feasible at this time. The authors have used a technique where the advantages of cosmetic appearance, reduced post operative morbidity and reversibility can be conferred on the puerperal women.After trying out the method individually in some cases, a formal case control study design has been made and an evaluation study has been performed in 122 cases. The technique has been found to be cosmetically more acceptable, both at clientele and peer evaluation levels (p<0.001). Though all the four parameters of post operative morbidity have shown better results for the technique evaluated as against the conventional technique, statistical significance has been achieved in two of the parameters (p<0.05).KEY WORDS: Cosmetics, Female sterilisation, Post operative morbidity 相似文献
42.
43.
Malignant phyllodes tumour is an uncommon breast neoplasm which undergoes osteosarcomatous differentiation in 1.3% of cases. We document the plain film, CT and scintigraphic features of a case of pulmonary metastases from this rare primary tumour. 相似文献
44.
45.
Deformable sickle erythrocytes have been reported by Mohandas and Evans to be more adherent to vascular endothelium than rigid irreversibly sickled cells (ISC). To define the clinical implications of this finding we have determined genetic, hematological, clinical, and rheological characteristics of sickle erythrocytes obtained from 65 patients with sickle cell anemia and fetal hemoglobin (Hb F) levels less than 15%. The alpha-globin gene number had a significant effect on the hematological parameters, the percentage of dense cells, ISC number, and HB A2 levels. The presence or absence of alpha thalassemia, however, had no effect on the frequency and severity of the sickle cell painful crisis (r = 0.06, P greater than .05). RBC deformability, determined by an ektacytometer, showed great heterogeneity among patients with three or four alpha-globin genes. Linear regression analyses of the data showed significant positive correlation of the frequency and severity of the painful crisis with RBC deformability (r = 0.49, P less than .001), and negative correlations with the percentage of dense cells (r = -0.37, P = .002), and the percentage of ISC (r = -0.46, P less than .001). We propose that the more deformable the sickle RBC are, the greater their adherence to vascular endothelium, and the more they cause vaso-occlusive crises, RBC deformability and the percentage of dense cells (or ISC) seem to have a predictive value of the frequency and severity of painful crises in sickle cell anemia. 相似文献
46.
47.
Adriano N. Kochi MD MSc Massimo Moltrasio MD Fabrizio Tundo MD PhD Stefania Riva MD Ciro Ascione MD Maria A. Dessanai MD Francesca Pizzamiglio MD Giulia Vettor MD Selene Cellucci CCP Alessio Gasperetti MD Claudio Tondo MD PhD Gaetano Fassini MD 《Journal of cardiovascular electrophysiology》2021,32(3):588-594
48.
Vishnu Prasad Pulappadi Smita Manchanda Pritviraj SK Smriti Hari 《The British journal of radiology》2021,94(1117)
Corpus luteum rupture presenting as acute abdomen is an underdiagnosed condition. Though a self-limiting entity, its differentiation from other causes is essential to prevent unnecessary surgical procedures. The radiologist should be aware of the possibility of a ruptured haemorrhagic ovarian cyst in a female of reproductive age group presenting with pelvic pain and a large amount of haemorrhagic ascites. Imaging characteristically reveals a thick-walled cystic structure in the adnexa with internal echoes, focal discontinuity or irregularity of its wall with haemoperitoneum. While sonography is usually indicative of corpus luteum rupture, cross-sectional imaging (CT/MRI) can be used to confirm the diagnosis. 相似文献
49.
Renu Sharma Aditya N Aggarwal Shuchi Bhatt Sudhir Kumar SK Bhargava 《Indian Journal of Orthopaedics》2015,49(5):542-548
Background:
de Quervain''s tenosynovitis is an inflammation of abductor pollicis longus (APL) and extensor pollicis brevis (EPB) muscle tendon sheaths at the level of radial styloid process. Its conservative management includes nonsteroidal anti-inflammatory drugs, wrist and thumb immobilization, ultrasonic therapy (US Th.) and low level laser therapy (LLLT). Literature is scanty on comparative efficacy of US Th. and LLLT for its management. This prospective study evaluates outcome of US Th. versus LLLT in de Quervain''s disease.Materials and Methods:
Thirty patients clinically diagnosed de Quervains tenosynovitis were included in the study and randomly assigned to two groups. The average age was 36 years (range: 21-45 years). One group was given LLLT and the other US Th. for a total of 7 exposures on alternate days. The clinical criteria used were Finkelstein''s test, tenderness over radial styloid (Ritchie''s tenderness scale), grip strength, pain (visual analog scale [VAS]) and radiological criteria was ultrasonographic assessment of change in thickness of APL and EPB tendon sheath. They were measured before commencement and at the end of seven sessions of therapy, as per standard procedure.Results:
Significant improvement was seen within both groups in the following outcome measures assessed: Ritchie''s tenderness scale, grip strength and VAS. Finkelstein''s test was not significantly improved in either groups. Ultrasonographic measurement of tendon sheath diameters, the mediolateral (ML), and anteroposterior (AP) diameters was not found to be significantly different in the US Th. group and the laser therapy group after treatment. On comparing both the groups, no statistically significant difference was found. However, looking at the mean values, the grip strength and VAS showed better improvement in the US Th. group as compared to the laser therapy group. 相似文献50.
Nemandra Sandiford SK Muirhead-Allwood JA Skinner 《Indian Journal of Orthopaedics》2015,49(6):595-601