全文获取类型
收费全文 | 6556篇 |
免费 | 374篇 |
国内免费 | 29篇 |
专业分类
耳鼻咽喉 | 95篇 |
儿科学 | 380篇 |
妇产科学 | 97篇 |
基础医学 | 774篇 |
口腔科学 | 101篇 |
临床医学 | 444篇 |
内科学 | 1469篇 |
皮肤病学 | 96篇 |
神经病学 | 468篇 |
特种医学 | 121篇 |
外科学 | 955篇 |
综合类 | 182篇 |
一般理论 | 6篇 |
预防医学 | 364篇 |
眼科学 | 215篇 |
药学 | 695篇 |
中国医学 | 79篇 |
肿瘤学 | 418篇 |
出版年
2023年 | 41篇 |
2022年 | 32篇 |
2021年 | 218篇 |
2020年 | 108篇 |
2019年 | 159篇 |
2018年 | 222篇 |
2017年 | 151篇 |
2016年 | 162篇 |
2015年 | 190篇 |
2014年 | 270篇 |
2013年 | 363篇 |
2012年 | 490篇 |
2011年 | 508篇 |
2010年 | 289篇 |
2009年 | 257篇 |
2008年 | 393篇 |
2007年 | 369篇 |
2006年 | 315篇 |
2005年 | 326篇 |
2004年 | 235篇 |
2003年 | 203篇 |
2002年 | 226篇 |
2001年 | 103篇 |
2000年 | 116篇 |
1999年 | 98篇 |
1998年 | 69篇 |
1997年 | 36篇 |
1996年 | 36篇 |
1995年 | 30篇 |
1993年 | 30篇 |
1992年 | 55篇 |
1991年 | 71篇 |
1990年 | 71篇 |
1989年 | 56篇 |
1988年 | 46篇 |
1987年 | 55篇 |
1986年 | 42篇 |
1985年 | 58篇 |
1984年 | 45篇 |
1983年 | 36篇 |
1982年 | 24篇 |
1980年 | 19篇 |
1979年 | 30篇 |
1978年 | 23篇 |
1977年 | 27篇 |
1975年 | 21篇 |
1973年 | 31篇 |
1972年 | 20篇 |
1971年 | 27篇 |
1969年 | 21篇 |
排序方式: 共有6959条查询结果,搜索用时 46 毫秒
1.
Koushik Narayan Subramanyam Abhishek Vasant Mundargi Revanth Potarlanka Prakash Khanchandani 《Injury》2019,50(3):770-776
Introduction
Pin site infection is the commonest complication of Ilizarov external fixation. The aim of the study was to examine if use of antiseptics was superior over control and further if daily dressing was superior to weekly dressing in regular pin site care in reducing the burden of pin site infection in Ilizarov fixators.Patients and methods
A total of 114 patients (2363 pin sites) were randomised to receive regular pin site care alone (30 patients, 638 pin sites) or with additional application of povidone iodine (27 patients, 561 pin sites), silver sulfadiazine (27 patients, 570 pin sites) and chlorhexidine (30 patients, 594 pin sites). The pin tracts were sub-randomised to receive daily (1212 pin sites) or weekly (1151 pin sites) dressings. The primary outcome was pin site infection days rate across all four groups. The secondary outcomes were - mean duration to first episode of infection, differences between daily and weekly dressing groups, mean duration of antibiotic therapy and incidence of re-interventions and sequelae. We also recorded frequency of bacterial pathogens in all microbiological samples submitted. Block randomization using computer-generated random numbers was used. The assessor of outcome was blinded.Results
All patients completed the study. Pin site infection rate days per 1000 pin site days observed was marginally less in chlorhexidine group, but was not statistically significant compared to other antiseptics and control group (Absolute value in control, povidone iodine, silver sulphadiazine and chlorhexidine groups were respectively 2.04?±?4.27, 2.04?±?3.65, 1.85?±?3.37, 1.37?±?2.35, p value 0.92). Daily dressing category showed slightly less pin site infection days rate within each group and overall, but this was also not statistically significant (1.56?±?3.99 versus 2.10?±?5.1, p value 0.35). There was no statistically significant difference among the groups with regard to other secondary outcomes. Methicillin Sensitive Staphylococcus aureus was the most common bacterial pathogen isolated.Conclusion
Use of antiseptics does not offer any advantage in regular pin site care in Ilizarov external fixation and daily pin site care is not superior to weekly pin site care. Empirical therapy in early and low grade pin site infections must be targeted against Staphylococcus. 相似文献2.
Uday Yanamandra Prateek Deo Kamal Kant Sahu Ram Vasudevan Nampoothiri Nalini Gupta Anusree Prabhakaran Deb Prasad Dhibhar Alka Khadwal Gaurav Prakash Man Upadesh Singh Sachdeva Deepesh Lad Neelam Varma Subhash Varma Pankaj Malhotra 《Clinical Lymphoma, Myeloma & Leukemia》2019,19(3):183-189.e1
Background
Multiple myeloma (MM) is a hematologic malignancy of plasma cell origin. MM primarily affects bone marrow, but extramedullary sites can also be involved. Myelomatous pleural effusion (MPE) is an atypical and rare complication of MM. We aimed to systematically study the incidence and clinicopathologic profile of patients with MPE in a real-world setting.Patients and Methods
In this retrospective study, 415 consecutive patients with MM managed at a tertiary care center in North India during a study period of January 1, 2010 to December 31, 2015 were evaluated for MPE. The patients with MPE were analyzed for their clinical profile, diagnosis, treatment, and outcomes.Results
Of these 415 patients, 11 (2.65%) patients had MPE. The median age of the study population was 50 years with male preponderance. The majority of these patients had immunoglobin (Ig)G Kappa disease. All patients had higher than International Staging System stage I disease. MPE was a presenting feature at MM diagnosis in 45.45% (n = 5) of the patients, whereas the rest developed MPE during follow-up. MPE presented predominantly (81.8%) as a unilateral effusion. Concurrent extramedullary involvement at other site was seen in 45.45% (n = 5), with 3 (27%) patients having concurrent myelomatous ascites. Six of these were managed aggressively, whereas 5 patients opted for palliation. The outcomes were dismal (90.9% mortality), with a median survival of 2.47 months.Conclusion
MPE is a rare entity, and positive outcomes of therapy remain low with dismal prognosis. 相似文献3.
Moreira Daniel C. Venkataraman Sujatha Subramanian Apurva Desisto John Balakrishnan Ilango Prince Eric Pierce Angela Griesinger Andrea Green Adam Eberhardt Charles G. Foreman Nicholas K. Vibhakar Rajeev 《Journal of neuro-oncology》2020,147(3):531-545
Journal of Neuro-Oncology - MYC-driven medulloblastomas are highly aggressive childhood tumors with dismal outcomes and a lack of new treatment paradigms. We identified that targeting replication... 相似文献
4.
5.
Advait Prakash Bhavesh Doshi Sangram Singh Tanmay Vyas Anvesh Jain 《African Journal of Paediatric Surgery》2015,12(1):82-85
Intussusception is a very rare cause of intestinal obstruction in neonates. It is of extremely rare occurrence among premature neonates. We present a case of 11-day-old premature neonate who presented with abdominal distension, intolerance to feeds, vomiting, significant bilious aspirate and bleeding per rectum. The initial diagnosis of necrotizing enterocolitis (NEC) led to a delay in the diagnosis. On exploratory laparotomy, it turned out to be a case of ileo-colic intussusception with Meckel''s diverticulum as a lead point. This site of intussusception (ileo-colic) and presence of a lead point among premature neonate is of exceedingly rare occurrence and very few such cases have been reported.In this article, the published work about clinical features and management on intussusceptions in premature neonates has been reviewed. The authors intend to highlight the difficulty in distinguishing the NEC and intussusception. Subtle clinical and radiological features which can help in differentiating the two conditions have been emphasized. This can avoid the delay in diagnosis and management which can prove critical. High index of suspicion with timely intervention is the key for optimizing outcome. A diagnosis of intussusception should always be considered in any preterm infant with suspected NEC. 相似文献
6.
7.
Gandy K. Alexa Orr Zhang Jiajia Nagarkatti Prakash Nagarkatti Mitzi 《Journal of neuroimmune pharmacology》2019,14(3):462-477
Journal of Neuroimmune Pharmacology - Resveratrol (3,5,4′-trihydroxy-trans-stilbene) (RES) is a naturally-derived phytoestrogen found in the skins of red grapes and berries and has potential... 相似文献
8.
9.
10.
The Posterior Interosseous Artery flap is a fasciocutaneous flap based on the Posterior Interosseous artery which lies invested by the fascial septum between the Extensor carpi ulnaris and Extensor Digiti Minimi where it gives off septocutaneous branches that spread out on the deep fascia to form longitudinal fascial arcades as well as supply the deep extensors. The conventional flap based on these perforators is restricted to the middle-thirds of the dorsum of forearm. Preservation of the perforators from the Interosseous Recurrent Artery by proximal ligation of the Interosseous Recurrent Artery and by protecting the index septum prolongation carrying the perforators of IRA can help us to recruit larger tissue in the flap. A total of 20 clinical cases and 10 cadaveric dissections were done to objectively define this technique. 相似文献