全文获取类型
收费全文 | 12520篇 |
免费 | 606篇 |
国内免费 | 42篇 |
专业分类
耳鼻咽喉 | 167篇 |
儿科学 | 623篇 |
妇产科学 | 147篇 |
基础医学 | 1441篇 |
口腔科学 | 230篇 |
临床医学 | 850篇 |
内科学 | 2845篇 |
皮肤病学 | 204篇 |
神经病学 | 832篇 |
特种医学 | 434篇 |
外科学 | 1901篇 |
综合类 | 301篇 |
一般理论 | 9篇 |
预防医学 | 750篇 |
眼科学 | 411篇 |
药学 | 1112篇 |
中国医学 | 52篇 |
肿瘤学 | 859篇 |
出版年
2023年 | 88篇 |
2022年 | 242篇 |
2021年 | 417篇 |
2020年 | 260篇 |
2019年 | 298篇 |
2018年 | 358篇 |
2017年 | 246篇 |
2016年 | 342篇 |
2015年 | 394篇 |
2014年 | 544篇 |
2013年 | 619篇 |
2012年 | 1039篇 |
2011年 | 1061篇 |
2010年 | 585篇 |
2009年 | 468篇 |
2008年 | 793篇 |
2007年 | 819篇 |
2006年 | 799篇 |
2005年 | 686篇 |
2004年 | 660篇 |
2003年 | 558篇 |
2002年 | 469篇 |
2001年 | 156篇 |
2000年 | 146篇 |
1999年 | 143篇 |
1998年 | 98篇 |
1997年 | 65篇 |
1996年 | 45篇 |
1995年 | 48篇 |
1994年 | 44篇 |
1993年 | 46篇 |
1992年 | 65篇 |
1991年 | 48篇 |
1990年 | 40篇 |
1989年 | 67篇 |
1988年 | 50篇 |
1987年 | 25篇 |
1986年 | 30篇 |
1985年 | 29篇 |
1984年 | 25篇 |
1983年 | 40篇 |
1981年 | 14篇 |
1980年 | 19篇 |
1979年 | 23篇 |
1978年 | 13篇 |
1975年 | 13篇 |
1973年 | 18篇 |
1972年 | 13篇 |
1971年 | 12篇 |
1970年 | 13篇 |
排序方式: 共有10000条查询结果,搜索用时 8 毫秒
1.
Metabolic abnormalities of gastrointestinal mucosa in celiac disease: An in vitro proton nuclear magnetic resonance spectroscopy study 下载免费PDF全文
2.
Pankaj Kumar Mishra 《European journal of cardio-thoracic surgery》2006,29(5):861-2; author reply 862
3.
Surender Kumar Yachha Rakesh Aggarwal S Srinivas Anshu Srivastava Sanjay K Somani Srivenu Itha 《Indian journal of gastroenterology》2006,25(3):132-135
BACKGROUND: We prospectively evaluated the usefulness of IgA tissue transglutaminase antibodies (IgA tTG) in the initial diagnosis of celiac disease (CD) and compared its diagnostic potential with that of IgA anti-endomysial antibodies (IgA EMA) and anti-IgA and IgG gliadin antibodies (AGA and AGG, respectively). METHODS: Sera of 23 untreated children fulfilling the revised ESPGHAN criteria for diagnosis of CD (Group I; mean age 10.8 y); 19 disease controls (Group II; mean age 8.5 y) presenting with chronic diarrhea, short stature or both; and 22 healthy children (Group III; mean age 8.8 y) were studied. These were tested in a blinded manner for AGA, AGG, IgA tTG (guinea pig as antigen) and IgA EMA. RESULTS: In Group I, IgA EMA was positive in 19, IgA tTG in 17, AGA in 14 and AGG in 17 patients. In Group II, these tests were positive in 1, 0, 2 and 14 patients, respectively and in Group III, in 0, 0, 0 and 1 child, respectively. Analyzing data from Group I and II, IgA EMA, IgA tTG, AGA and AGG had sensitivity rates of 83%, 74%, 61% and 74%, respectively; the specificity rates were 95%, 100%, 89% and 26%; positive predictive values were 95%, 100%, 88% and 55% and negative predictive values were 82%, 74%, 65% and 45%, respectively. CONCLUSION: IgA tTG is useful for the diagnosis of CD, with sensitivity and specificity rates comparable to those of EMA and this test is well suited for use in tropical countries like India. 相似文献
4.
OBJECTIVE: To analyse morbidity after completion total thyroidectomy compared with primary total thyroidectomy in a specialist thyroid surgery centre. DESIGN: Retrospective study. SETTING: Tertiary referral hospital, India. PATIENTS: Medical records of 143 patients who had total thyroidectomy between January 1990 and December 1999. 95 had primary thyroidectomies and 48 were completion thyroidectomies. MAIN OUTCOME MEASURES: Complication rate in both groups. RESULTS: The groups were comparable in respect of clinicopathological variables. Residual tumour was found in 19/48 (40%). After completion thyroidectomy, transient hypoparathyroidism and transient recurrent laryngeal nerve palsy were recorded in 8/48 (17%) and 2/48 (4%), respectively. No permanent hypoparathyroidism or permanent recurrent laryngeal nerve palsy was recorded in the completion thyroidectomy group. CONCLUSIONS: Completion thyroidectomy can be done with acceptable morbidity in a specialist thyroid surgery centre. Fear of increased morbidity after the procedure should not deter surgeon from doing this operation or referring the patients to a specialist centre. 相似文献
5.
A Girdhar B Mishra R K Lavania A K Bagga G N Malaviya B K Girdhar 《International journal of leprosy and other mycobacterial diseases : official organ of the International Leprosy Association》1989,57(2):472-475
Two infants, one 4 months old and the other 2 months old, having histologically confirmed indeterminate leprosy are reported. The route of infection, mode of transmission, and incubation period are discussed with reference to these two cases of infantile leprosy. 相似文献
6.
Sandeep Mahajan Suresh C Tiwari Vikram Kalra Dipankar M Bhowmik Sanjay K Agarwal Suresh C Dash Parveen Kumar 《Peritoneal dialysis international》2005,25(5):473-477
BACKGROUND: Staphylococcus aureus-associated peritonitis and catheter exit-site infections (ESIs) are important causes of hospitalization and catheter loss in patients undergoing chronic peritoneal dialysis. Intranasal and topical use of mupirocin has been found to be an effective strategy in decreasing S. aureus-related infectious complications in persons who are carriers of S. aureus; however, there is no consensus regarding the prophylactic use of mupirocin irrespective of carrier status. We aimed to determine the potential effectiveness of application of mupirocin cream at the catheter exit site in preventing ESI and peritonitis irrespective of carrier status in a tropical country such as India. METHODS: This prospective historically controlled study was done in a total of 40 patients. From August 2003, all patients, incident and prevalent, were instructed to apply 2% mupirocin cream daily to the exit site instead of the older practice of povidone-iodine and gauze dressing. Patients were not screened to determine whether they were S. aureus carriers. The infection-related data for 1 year, until July 2004, were compared with the historical control, which was infection-related data for the year preceding the year of mupirocin application. RESULTS: Mean age of the study population was 62 years, with 61.8% being male and 64.3% being diabetic. Local application of mupirocin led to a significant reduction in the incidence density per patient-month of both ESI and peritonitis compared to controls (0.15 vs 0.37 and 0.37 vs 0.67, p = 0.01 for both). This amounted to a relative reduction of 60.5% and 55% respectively. ESI and peritonitis due to S. aureus were also significantly lower in the study group compared to controls (incidence density per patient-month 0.05 vs 0.13 and zero vs 0.17 respectively, p < 0.01 for both). There occurred no catheter removal due to infection-related complications during the study period compared to two during the control period. None of the patients reported a mupirocin-related adverse effect. CONCLUSIONS: Daily application of mupirocin at the exit site is a well-tolerated and effective strategy in reducing the incidence of ESI and peritonitis in a tropical country such as India. It can thus significantly reduce morbidity, catheter loss, and transfer to hemodialysis in peritoneal dialysis patients. 相似文献
7.
Girish S. Mishra Arpan Bhatia 《Indian journal of otolaryngology and head and neck surgery》2007,59(3):296-297
Dermatofibrosarcoma protuberance of head and neck is a rare neoplasm and accounts for less than one percent of Head and Neck Neoplasm. The objective of this report is to understand etiology, presentation, histopathologic identification and treatment option for this tumour. The goal of current report is to acquaint the clinician with presentation and treatment option for this disease. 相似文献
8.
9.
We thank Coceani and L'Abbate for their comments on our paper.We concur that pathophysiology cannot be inferred fromcoronary lumenography alone, and this was one of thekey motivations in conducting the present study. 相似文献
10.
Popliteal artery aneurysms representing 80% of peripheral artery aneurysms rarely rupture (a reported incidence of 0.1–2.8
%) and second commonest in frequency after aorto-iliac aneurysms. They usually present with pain, swelling, occlusion or distal
embolisation and can cause diagnostic difficulties. We report a 78 year old man who was previously admitted to hospital with
a pulmonary embolus secondary to deep venous thrombosis. He was heparinized then warfarinised and was readmitted with a ruptured
popliteal aneurysm leading to a large pseudo aneurysm formation. The pulmonary embolus had been due to popliteal vein thrombosis
and propagation of the clot. A thorough review of literature identified only one previously reported case of ruptured popliteal
artery aneurysm and subsequent large pseudo aneurysm formation. We feel it is important to exclude a popliteal aneurysm in
a patient with DVT. This may be more common than the published literature suggests. 相似文献