全文获取类型
收费全文 | 3586篇 |
免费 | 226篇 |
国内免费 | 10篇 |
专业分类
耳鼻咽喉 | 43篇 |
儿科学 | 97篇 |
妇产科学 | 104篇 |
基础医学 | 413篇 |
口腔科学 | 119篇 |
临床医学 | 378篇 |
内科学 | 650篇 |
皮肤病学 | 48篇 |
神经病学 | 323篇 |
特种医学 | 204篇 |
外国民族医学 | 5篇 |
外科学 | 535篇 |
综合类 | 65篇 |
一般理论 | 6篇 |
预防医学 | 370篇 |
眼科学 | 51篇 |
药学 | 246篇 |
中国医学 | 3篇 |
肿瘤学 | 162篇 |
出版年
2023年 | 23篇 |
2022年 | 33篇 |
2021年 | 55篇 |
2020年 | 30篇 |
2019年 | 39篇 |
2018年 | 54篇 |
2017年 | 48篇 |
2016年 | 41篇 |
2015年 | 55篇 |
2014年 | 82篇 |
2013年 | 134篇 |
2012年 | 180篇 |
2011年 | 189篇 |
2010年 | 105篇 |
2009年 | 96篇 |
2008年 | 176篇 |
2007年 | 195篇 |
2006年 | 191篇 |
2005年 | 173篇 |
2004年 | 167篇 |
2003年 | 161篇 |
2002年 | 169篇 |
2001年 | 123篇 |
2000年 | 121篇 |
1999年 | 118篇 |
1998年 | 70篇 |
1997年 | 47篇 |
1996年 | 41篇 |
1995年 | 52篇 |
1994年 | 29篇 |
1993年 | 38篇 |
1992年 | 84篇 |
1991年 | 67篇 |
1990年 | 72篇 |
1989年 | 55篇 |
1988年 | 54篇 |
1987年 | 44篇 |
1986年 | 26篇 |
1985年 | 31篇 |
1984年 | 22篇 |
1983年 | 25篇 |
1982年 | 17篇 |
1981年 | 19篇 |
1979年 | 27篇 |
1978年 | 18篇 |
1974年 | 15篇 |
1973年 | 15篇 |
1971年 | 14篇 |
1970年 | 17篇 |
1968年 | 13篇 |
排序方式: 共有3822条查询结果,搜索用时 15 毫秒
61.
62.
Voice Hearing in Borderline Personality Disorder Across Perceptual,Subjective, and Neural Dimensions
Will H Strawson Hao-Ting Wang Lisa Quadt Maxine Sherman Dennis E O Larsson Geoff Davies Brontë L A Mckeown Marta Silva Sarah Fielding-Smith Anna-Marie Jones Mark Hayward Jonathan Smallwood Hugo D Critchley Sarah N Garfinkel 《The international journal of neuropsychopharmacology / official scientific journal of the Collegium Internationale Neuropsychopharmacologicum (CINP)》2022,25(5):375
BackgroundAuditory verbal hallucinations (AVH) commonly occur in the context of borderline personality disorder (BPD) yet remain poorly understood. AVH are often perceived by patients with BPD as originating from inside the head and hence viewed clinically as “pseudohallucinations,” but they nevertheless have a detrimental impact on well-being.MethodsThe current study characterized perceptual, subjective, and neural expressions of AVH by using an auditory detection task, experience sampling and questionnaires, and functional neuroimaging, respectively.ResultsPerceptually, reported AVH correlated with a bias for reporting the presence of a voice in white noise. Subjectively, questionnaire measures indicated that AVH were significantly distressing and persecutory. In addition, AVH intensity, but not perceived origin (i.e., inside vs outside the head), was associated with greater concurrent anxiety. Neurally, fMRI of BPD participants demonstrated that, relative to imagining or listening to voices, periods of reported AVH induced greater blood oxygenation level–dependent activity in anterior cingulate and bilateral temporal cortices (regional substrates for language processing). AVH symptom severity was associated with weaker functional connectivity between anterior cingulate and bilateral insular cortices.ConclusionIn summary, our results indicate that AVH in participants with BPD are (1) underpinned by aberrant perceptual-cognitive mechanisms for signal detection, (2) experienced subjectively as persecutory and distressing, and (3) associated with distinct patterns of neural activity that inform proximal mechanistic understanding. Our findings are like analogous observations in patients with schizophrenia and validate the clinical significance of the AVH experience in BPD, often dismissed as “pseudohallucinations.” These highlight a need to reconsider this experience as a treatment priority. 相似文献
63.
64.
Vitrectomy in the management of peripheral uveitis 总被引:4,自引:0,他引:4
The natural history of peripheral uveitis may eventually lead to indications for vitreous surgery. Over a 7-year period, a consecutive series of 12 eyes in nine patients with peripheral uveitis underwent vitreous surgery. Indications for surgery included persistent dense vitreous inflammation, vitreous hemorrhage, traction retinal detachment (RD), and epiretinal membrane formation. Patients were followed for an average of 22 months. Six eyes (50%) required further surgery after the development of RD, recurrent vitreous hemorrhage, or cataract formation. The preoperative finding most frequently associated with postoperative complications was the presence of active neovascularization of the vitreous base. Final visual acuity ranged from 20/30 to 20/100 showing an average improvement of 5 Snellen lines. Persistent cystoid macular edema significantly limited visual improvement in five patients. Patients undergoing vitreous surgery for management of peripheral uveitis may show a significant degree of visual improvement though multiple operations may be required. Control of active neovascularization is an important factor in limiting postoperative complications and the need for further surgery. 相似文献
65.
66.
67.
68.
Kevin Martell Hans Chung Gerard Morton Danny Vesprini Chia-Lin Tseng Ewa Szumacher Patrick Cheung Will Chu Stanley Liu Andrew Loblaw 《Canadian Urological Association journal》2022,16(8):E437
IntroductionWe aimed to determine the minimum cross-sectional ellipsoid area on magnetic resonance (MR) of intraprostatic nodules that best predicts for subsequent targeted biopsies revealing ≥ grade group (GG) 2 disease.MethodsForty-six patients previously diagnosed with GG 1 prostate adenocarcinoma who received cognitively fused, MR-guided, transperineal targeted biopsies in addition to six random biopsies were included in this analysis. A Youden cutpoint analysis was used to determine the ellipsoid area in the axial plane best predicting for ≥GG 2 disease within the targeted biopsy cores and logistic regression used to assess the result.ResultsMedian time from MR imaging to targeted biopsy was 2.4 (1.4–5.5) months. Forty of 46 (87%) patients had one nodule and 6/46 (13%) had two separate nodules on MR that received targeted biopsy. Of the 52 nodules, five (10%), 33 (63%), and 14 (27%) were Prostate Imaging-Reporting and Data System (PI-RADS) 3, 4, and 5, respectively. Thirteen (25%), six (12%), and 33 (64%) were in the anterior, medial, and posterior regions of the prostate, respectively. Median area was 0.72 (0.49–1.29) cm2 (average diameter 9.5 mm). Fifteen of 46 (33%) patients had ≥1 random biopsy and 20/52 (38%) nodules had ≥1 targeted biopsy revealing ≥GG 2 disease. The optimal area cutpoint was ≥0.7 cm2, with an area under the curve of 0.671 (0.510–0.832). On logistic regression, area ≥0.7 cm2 was solely predictive of targeted biopsy revealing ≥GG 2 disease (odds ratio 6.5, 1.3–32.4, p=0.022).ConclusionsNodule area ≥0.7 cm2 may predict for transperineal-based targeted biopsies being positive for ≥GG 2 disease when 1–2 cores are taken. 相似文献
69.
70.