全文获取类型
收费全文 | 1893篇 |
免费 | 75篇 |
国内免费 | 11篇 |
专业分类
耳鼻咽喉 | 61篇 |
儿科学 | 139篇 |
妇产科学 | 63篇 |
基础医学 | 155篇 |
口腔科学 | 120篇 |
临床医学 | 186篇 |
内科学 | 357篇 |
皮肤病学 | 76篇 |
神经病学 | 109篇 |
特种医学 | 111篇 |
外科学 | 315篇 |
综合类 | 31篇 |
预防医学 | 32篇 |
眼科学 | 40篇 |
药学 | 95篇 |
中国医学 | 4篇 |
肿瘤学 | 85篇 |
出版年
2024年 | 2篇 |
2023年 | 21篇 |
2022年 | 25篇 |
2021年 | 49篇 |
2020年 | 24篇 |
2019年 | 53篇 |
2018年 | 42篇 |
2017年 | 37篇 |
2016年 | 61篇 |
2015年 | 75篇 |
2014年 | 92篇 |
2013年 | 114篇 |
2012年 | 140篇 |
2011年 | 150篇 |
2010年 | 86篇 |
2009年 | 72篇 |
2008年 | 143篇 |
2007年 | 157篇 |
2006年 | 155篇 |
2005年 | 130篇 |
2004年 | 110篇 |
2003年 | 105篇 |
2002年 | 58篇 |
2001年 | 25篇 |
2000年 | 13篇 |
1999年 | 11篇 |
1998年 | 6篇 |
1997年 | 8篇 |
1996年 | 3篇 |
1995年 | 4篇 |
1994年 | 2篇 |
1993年 | 1篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1990年 | 2篇 |
1986年 | 1篇 |
排序方式: 共有1979条查询结果,搜索用时 15 毫秒
31.
U Tuncel 《The Journal of craniofacial surgery》2012,23(5):1355-1357
ABSTRACT: We have retrospectively evaluated the charts of 120 patients who had undergone rhinoplasties. The noses were divided into 2 types. Type 1 (42 cases) was characterized by a normal radix, high dorsum, and prominent vault. These noses were corrected by dorsal reduction, lateral osteotomy when needed, and caudal septal resection. Type 2 (78 cases) was characterized by a dependent tip with inadequate projection and a low radix with an excessive projected dorsal hump. These noses were corrected by tip support with cartilage graft and/or various suturing techniques and dorsal reduction. Secondary revision was necessary in 26 patients (21.6% of the total number) mostly due to inadequate septal correction in the first operation and irregularities of the dorsum. The postoperative result was considered as good in 88 (81%), fair in 27 (15%), and poor in 5 (4%) by the patients. Although the cases presented in this series were mostly difficult ones, experience was found to be the major determinant in success while dealing with the challenging noses of the Black Sea Region. 相似文献
32.
33.
34.
ObjectiveTo determine if cervical vestibular evoked myogenic potentials (cVEMPS) differ in patients with migraine without aura (MoA), vestibular migraine (VM) and tension type headache (TTH).MethodsTwenty patients with MoA, 24 patients with VM and 20 patients with TTH were included in the study. Thirty healthy volunteers of comparable age and gender were taken as the control group. The latencies of peaks p13 and n23, peak-to-peak amplitude of p13–n23 divided by a mean prestimulus EMG recorded during cVEMP testing were measured. The amplitude asymmetry between right and left sides was also calculated and taken into consideration. Caloric testing was conducted to check if the results are associated with the results of the cVEMPs.ResultsFive (one on the right, four on the left side) of the 24 patients with VM (20.8%) displayed a unilateral caloric hypofunction. Normal results were recorded from patients with MoA and TTH. p13, n23 latencies and amplitudes of the patient groups were not statistically different from the results of the healthy controls (p > 0.05). An amplitude asymmetry between right and left sides exceeding that of the healthy controls was not also present (p > 0.05).ConclusionsThough a hypofunctioning horizontal semicircular canal was detected in 20.8% of the patients with VM, saccular function seemed to be unaffected. Patients with MoA and TTH did not display any vestibular test abnormality.SignificancePrimary headache disorders seem to be associated with a normal interictal cVEMP profile. 相似文献
35.
Dr Salih Ozgocmen Arzu Kaya Arif Gulkesen Serpil Bulut Ozge Ardicoglu 《International journal of psychiatry in clinical practice》2013,17(3):160-165
Objectives. Fibromyalgia (FM) and multiple sclerosis (MS) are known to cause disability and have an impact on physical functioning, social functioning, and emotional well-being of affected individuals. The aim of this study was to compare pressure pain threshold, health and functional status in females with FM and MS who were ambulatory. Methods. Control point scores (CPS), total myalgic scores (TMS; using an algometer), tender point (TP) counts, and chronic widespread pain were assessed in females with FM and MS and in healthy age-matched female controls. The Fibromyalgia Impact Questionnaire (FIQ), and the Nottingham Health Profile were performed. The Kurtzke Expanded Disability Status Scale (EDSS) was used to estimate the disability status of persons with MS. Results. Fibromyalgia patients have significantly lower CPS and TMS than MS patients and controls. Multiple sclerosis patients had similar CPS but significantly lower TMS compared to controls. Tender point counts were significantly higher in FM than MS patients and controls. Patients with MS had a higher numbers of TPs with respect to controls. Chronic widespread pain was reported by only three patients with MS and these patients did not meet FM criteria for tender point counts. Fibromyalgia patients had significantly lower FIQ-first item scores than MS patients. FM patients had higher NHP section scores in pain, social isolation, emotional reaction, sleep and energy, but similar physical mobility compared to MS patients. In MS patients energy and physical mobility dimension of NHP and FIQ-first item scores correlated with EDSS (r=0.42, P=0.047, r=0.83, P=0.001, and r=0.62, P=0.001, respectively). Conclusion. This cross-sectional study warrants further research comparing FM and MS, which share a lot of clinical and psychosocial features or may coexist. Chronic pain and related fatigue, social and emotional reactions and disability seem to be important components in FM, so taking care of these components, in other words a biopsychosocial model, may improve disease outcome and quality of life not only in FM but also in MS. 相似文献
36.
Gulhan Koyuncuoglu Feyza Nur Gorken Goksen Ikikarakayali Sevgi Zorlu Arzu Pinar Erdem Elif Sepet Gamze Aren 《Pediatric Dental Journal》2013,23(1):51-56
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
37.
Haldun Akoglu Ebru Unal Akoglu Serdar Evman Tayfun Akoglu Arzu Denizbasi Altinok Ozlem Guneysel Ozge Ecmel Onur Serkan Emre Eroglu 《Injury》2013
Introduction
The primary goal of this study was to compare the chest wall thicknesses (CWT) at the 2nd intercostal space (ICS) at the mid-clavicular line (MCL) and 5th ICS at the mid-axillary line (MAL) in a population of patients with a CT confirmed pneumothorax (PTX). This result will help physicians to determine the optimum needle thoracostomy (NT) puncture site in patients with a PTX.Materials and methods
All trauma patients who presented consecutively to A&E over a 12-month period were included. Among all the trauma patients with a chest CT (4204 patients), 160 were included in the final analysis. CWTs were measured at both sides and were compared in all subgroup of patients.Results
The average CWT for men on the 2nd ICS-MCL was 38 mm and for women was 52 mm; on the other hand, on the 5th ICS-MAL was 33 mm for men and 38 mm for women. On the 2nd ICS-MCL 17% of men and 48% of women; on the 5th ICS-MAL 13% of men and 33% of women would be inaccessible with a routine 5-cm catheter. Patients with trauma, subcutaneous emphysema and multiple rib fractures would have thicker CWT on the 2nd ICS-MCL. Patients with trauma, lung contusion, sternum fracture, subcutaneous emphysema and multiple rib fractures would have thicker CWT on the 5th ICS-MAL.Conclusions
This study confirms that a 5.0-cm catheter would be unlikely to access the pleural space in at least 1/3 of female and 1/10 of male Turkish trauma patients, regardless of the puncture site. If NT is needed, the 5th ICS-MAL is a better option for a puncture site with thinner CWT. 相似文献38.
39.
40.
Bulent Colak Bahar Gurlek Zeynep Arzu Yegin Serpil Muge Deger Sehri Elbek Hatice Pasaoglu 《Renal failure》2013,35(2):187-191
Familial Mediterranean Fever (FMF) is an autosomal recessive disease characterized by periodic attacks of fever and polyserositis. The effects of the MEFV genotype differences on clinical picture and inflammatory activity have not been well documented. The aim of this study was to investigate levels of conventional inflammation markers, procalcitonin, interleukin levels, TNF-alpha, and C5a levels in patients with FMF who had different MEFV genotypes and compare them with those of healthy subjects. The study consisted of 41 patients with FMF (F/M: 23/18), and 31 healthy subjects (F/M: 18/13). Tests were performed during the attack-free period.White-blood cell count, CRP and IL-8 levels were higher in patients with FMF than in healthy subjects (p < 0.05) and also higher in M680I carriers than in the patients with M694V allele carriers. However, ESR, fibrinogen, procalcitonin, IL-6, C5a, TNF-alpha, and IgD levels were not significantly different between patients and healthy subjects (p > 0.05). Arthralgia or arthritis was significantly higher in M694V carriers than in non-M694V carriers (p < 0.05). It is concluded that the clinical features and inflammatory-cytokine activities were higher in patients with FMF during the attack-free period than in healthy subjects, and the different genotype might be related to different clinical pictures. 相似文献