首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   2214篇
  免费   122篇
  国内免费   9篇
耳鼻咽喉   65篇
儿科学   109篇
妇产科学   99篇
基础医学   215篇
口腔科学   156篇
临床医学   186篇
内科学   485篇
皮肤病学   30篇
神经病学   150篇
特种医学   118篇
外科学   377篇
综合类   43篇
一般理论   2篇
预防医学   60篇
眼科学   63篇
药学   115篇
中国医学   3篇
肿瘤学   69篇
  2024年   4篇
  2023年   37篇
  2022年   63篇
  2021年   119篇
  2020年   58篇
  2019年   82篇
  2018年   92篇
  2017年   76篇
  2016年   93篇
  2015年   94篇
  2014年   112篇
  2013年   128篇
  2012年   153篇
  2011年   189篇
  2010年   79篇
  2009年   77篇
  2008年   143篇
  2007年   139篇
  2006年   111篇
  2005年   120篇
  2004年   106篇
  2003年   74篇
  2002年   61篇
  2001年   15篇
  2000年   18篇
  1999年   9篇
  1998年   3篇
  1995年   4篇
  1992年   3篇
  1991年   5篇
  1990年   6篇
  1989年   3篇
  1988年   5篇
  1987年   4篇
  1986年   4篇
  1985年   5篇
  1984年   9篇
  1983年   2篇
  1982年   4篇
  1981年   2篇
  1980年   4篇
  1979年   6篇
  1976年   3篇
  1975年   3篇
  1974年   5篇
  1970年   1篇
  1968年   1篇
  1967年   1篇
  1966年   2篇
  1965年   1篇
排序方式: 共有2345条查询结果,搜索用时 15 毫秒
21.
22.
23.

Introduction

Facial candidal abscess is an infection with a fungal cause which was presented in this case such a rarity. We report a rare case of facial abscess due to Candida species in a patient with unknown diabetes.

Materials and Methods

The patient presented with a longstanding firm swelling which occurred 2 weeks ago and did not show any improvement of healing process in spite of surgical and medical treatments. MRI examinations were conclusive and compatible with abscess, so she underwent surgical intervention. Facial candidal abscess was the final diagnosis.

Conclusions

We concluded that, in persistent abscesses, invasive candidiasis should be considered in the differential diagnosis of bacterial infections as it generally affects individuals with diabetes or general defects in the immune system, or those who use widespread antibiotics and steroids.  相似文献   
24.
25.
Thoracic radiography and high resolution computerized tomography is used to diagnose pulmonary infections in immunosuppressed patients, although in some cases these do not provide enough information about the lesion. Dynamic contrast‐enhanced magnetic resonance imaging may be useful in these cases, especially for the characterization of cavitary lesions and assessment of their contrast diffusion.  相似文献   
26.
Primary malignant melanoma of the nose and paranasal sinus mucosa is a rare disease and seen in less than 1% among all melanomas. Malignant melanomas have 2 origins: cutaneous and mucosal. The mucosal form has a worse prognosis because of its aggressiveness compared with that of the cutaneous form. Mucosal melanomas often occur at a rate of 2% to 3% among all melanomas and are typically found in the nasal cavity and paranasal sinuses. Generally, it is more common in males and in those older than 50 years. In this study, 4 patients were observed at the Cumhuriyet University Faculty of Medicine; 2 of them were a 64-year-old man and an 82-year-old woman who had a malignant melanoma originating from the nasal septal mucosa, 1 patient was a 72-year-old woman whose malignant melanoma originated from the inferior turbinate, and 1 patient was a 77-year-old woman with a sinonasally located melanoma. The conditions of these patients were discussed under the light of literature instructions.  相似文献   
27.
AimThe partial pulpotomy can offer a successful outcome for the treatment of traumatic complicated crown fractures. The aim of this clinical report was to evaluate the effect of mineral trioxide aggregate (MTA) in apexogenesis of traumatized immature permanent incisors with pulp exposure.Case reportAccording to clinical and radiological examinations complicated crown fractures and open apices were identified in 13 permanent upper incisors in ten patients (age range 7–10 years). Partial pulpotomy procedures were performed and the teeth were treated with MTA. In this report, periodic clinical and radiological follow-ups were performed. At recall examinations, all teeth were asymptomatic, and clinical and radiological investigations revealed excellent healing patterns with continued apexogenesis.ConclusionRegular examination of immature traumatized permanent teeth is critical for vitality and apexification. In this report, clinical and radiological findings confirm that partial pulpotomy with MTA is a reliable and effective treatment approach in apexogenesis of traumatized immature permanent incisors with pulp exposure.  相似文献   
28.
29.
INTRODUCTIONLeiomyoma of the round ligament is a rare condition and usually appears like an inguinal hernia.PRESENTATION OF CASEWe report a case of a 40 year-old women found to have an inguinal mass which it was finally diagnosed as leiomyoma.The patient was admitted to our hospital with a history of painless groin mass. The mass was thought to be irreducible inguinal hernia. Surgical exploration demonstrated a round ligament leiomyoma.DISCUSSIONA smooth muscle tumor in the round ligament of the uterus in the inguinal region is a rare entity and can be mistaken for an irreducible inguinal hernia. It is a rare condition occurring predominantly in premenopausal middle-aged women. Abdominal, inguinal, and vulvar locations have been described. Surgical excision is the curative treatment.CONCLUSIONLeiomyoma of the round ligament should be entertained as a possible etiology of inguinal mass.  相似文献   
30.
Emotional Intelligence (EI) is a broad personality construct signifying the ability to perceive and to regulate affects within oneself. Alexithymia is another personality construct denoting difficulty in identifying and expressing emotions, with an externally oriented thinking style. Although previously considered to be independent, some studies have shown that these constructs overlap. The aim of this study was to evaluate and compare the levels of EI and alexithymia in patients with panic disorder, major depressive disorder (MDD), and generalized anxiety disorder (GAD). The subjects included 171 psychiatric patients and 56 non-clinical controls. Psychiatric diagnoses were based on DSM-IV criteria. The Emotional Intelligence Scale-34 (EIS-34) and the Toronto Alexithymia Scale (TAS-20) were used to assess EI and alexithymia. All three patient groups scored statistically significantly higher than the non-clinical controls on TAS-20 total score and the TAS-20 subfactors of difficulty identifying feelings and difficulty describing feelings. EIS-34 scores were lower in patient groups than in the non-clinical controls, but only the EIS-34 intrapersonal subscale was significant difference. Total TAS-20 and EIS-34 scores in the patient cohort were inversely and significantly correlated These results reaffirm an overlap between EI and alexithymia with the intrapersonal factor of EI to be more dependent on the difficulty identifying feelings dimension of alexithymia in subjects with MDD and GAD.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号