全文获取类型
收费全文 | 120400篇 |
免费 | 8484篇 |
国内免费 | 5476篇 |
专业分类
耳鼻咽喉 | 819篇 |
儿科学 | 2725篇 |
妇产科学 | 1176篇 |
基础医学 | 9704篇 |
口腔科学 | 1277篇 |
临床医学 | 15713篇 |
内科学 | 9819篇 |
皮肤病学 | 506篇 |
神经病学 | 14532篇 |
特种医学 | 12003篇 |
外国民族医学 | 4篇 |
外科学 | 23938篇 |
综合类 | 18033篇 |
现状与发展 | 6篇 |
一般理论 | 3篇 |
预防医学 | 7474篇 |
眼科学 | 1131篇 |
药学 | 8912篇 |
45篇 | |
中国医学 | 3798篇 |
肿瘤学 | 2742篇 |
出版年
2024年 | 247篇 |
2023年 | 1783篇 |
2022年 | 2576篇 |
2021年 | 4481篇 |
2020年 | 4328篇 |
2019年 | 3730篇 |
2018年 | 3810篇 |
2017年 | 4103篇 |
2016年 | 4233篇 |
2015年 | 4180篇 |
2014年 | 7567篇 |
2013年 | 8883篇 |
2012年 | 6893篇 |
2011年 | 7819篇 |
2010年 | 6576篇 |
2009年 | 6262篇 |
2008年 | 6281篇 |
2007年 | 6412篇 |
2006年 | 5765篇 |
2005年 | 5198篇 |
2004年 | 4337篇 |
2003年 | 3935篇 |
2002年 | 3344篇 |
2001年 | 2889篇 |
2000年 | 2438篇 |
1999年 | 2052篇 |
1998年 | 1817篇 |
1997年 | 1655篇 |
1996年 | 1326篇 |
1995年 | 1210篇 |
1994年 | 1046篇 |
1993年 | 866篇 |
1992年 | 821篇 |
1991年 | 610篇 |
1990年 | 550篇 |
1989年 | 500篇 |
1988年 | 429篇 |
1987年 | 399篇 |
1986年 | 387篇 |
1985年 | 512篇 |
1984年 | 384篇 |
1983年 | 299篇 |
1982年 | 288篇 |
1981年 | 258篇 |
1980年 | 245篇 |
1979年 | 120篇 |
1978年 | 121篇 |
1977年 | 124篇 |
1976年 | 60篇 |
1975年 | 38篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
31.
32.
Cost‐Effectiveness and Cost‐Utility Analysis of Spinal Cord Stimulation in Patients With Failed Back Surgery Syndrome: Results From the PRECISE Study 下载免费PDF全文
Furio Zucco MD Roberta Ciampichini MSc Angelo Lavano MD Amedeo Costantini MD Marisa De Rose MD Paolo Poli MD Gianpaolo Fortini MD Laura Demartini MD Enrico De Simone MD Valentino Menardo MD Piero Cisotto MD Mario Meglio MD Luciana Scalone PhD Lorenzo G. Mantovani DSc 《Neuromodulation》2015,18(4):266-276
33.
34.
目的探讨前路椎体次全切除术和后路椎管扩大椎板成形术对脊髓型颈椎病(CSM)合并椎管狭窄症患者术后疗效及颈椎矢状位参数的影响。方法回顾性分析2010年3月—2015年8月收治的147例CSM合并椎管狭窄症患者的临床资料,其中80例行前路椎体次全切除术治疗(A组),67例行后路椎管扩大椎板成形术治疗(B组)。比较2种手术方法治疗前后日本骨科学会(JOA)评分、Cobb角及矢状位垂直距离(SVA)。将2组患者根据T_1倾斜角分别分为高T_1倾斜角(≥25°)亚组和低T_1倾斜角( 25°)亚组,对不同亚组之间的疗效及手术安全性进行比较。结果 2组术后JOA评分和Cobb角均高于术前,差异有统计学意义(P 0.05)。A组术后SVA低于术前,差异有统计学意义(P 0.05),B组术后SVA与术前相比差异无统计学意义(P 0.05)。A组术后JOA评分和Cobb角均高于B组,SVA低于B组,差异均有统计学意义(P 0.05)。A组中,高T_1倾斜角亚组和低T_1倾斜角亚组JOA评分改善效果和后凸畸形发生率比较差异无统计学意义(P 0.05);B组中,低T_1倾斜角亚组JOA评分改善效果和后凸畸形发生率优于高T_1倾斜角亚组,差异均有统计学意义(P 0.05)。结论相较于后路椎管扩大椎板成形术,前路椎体次全切除术治疗CSM合并椎管狭窄症临床疗效更佳,且有助于改善颈椎矢状位平衡;在高T_1倾斜角水平下,应尽可能选择前路椎体次全切除术。 相似文献
35.
36.
《Revue d'épidémiologie et de santé publique》2020,68(2):109-115
BackgroundDuring their training, students in osteopathy regularly undergo spinal manipulation exercises. This exposes the students’ spine to unskilled gestures performed by their colleagues learning spinal manipulation. Discomfort, muscle soreness or moderate pain following spinal manipulations lasting two or three days are commonly reported. In addition, some students may have ongoing spinal musculoskeletal disease (SMSD) during their studies. The purpose of this study was to evaluate the prevalence of SMSDs and their maximum intensity in a population of osteopathy students and to determine whether individual differences exist.MethodAn exploratory cross-sectional study took place over three years. Data were collected by means of a self-administrated standardised questionnaire screening for MSD: the Nordic questionnaire.ResultsThere were 733 exploitable questionnaires, giving an average response rate of 91.5%. Average prevalence of SMSD was 98.4% during the last 12 months. Average maximum intensity perceived was 6/10 and 45% of students experienced an intense SMSD (scored between 7 and 10/10). Variation of the maximum intensity of SMSD between “before osteopathy studies” and “the last 12 months” was 1.2/10. This variation was influenced by the number of days students were manipulated during a week (p < 0.0001). On average, students underwent manipulation three days a week.ConclusionThis study confirms the important prevalence of SMSD among osteopathy students. This result led us to carry out a qualitative study for exploring students’ conceptions in health and spinal manipulative practices. 相似文献
37.
38.
39.
40.
《Clinical neurophysiology》2021,132(12):3104-3115
ObjectiveWe aimed to establish an objective neurophysiological test protocol that can be used to assess the somatosensory nervous system.MethodsIn order to assess most fiber subtypes of the somatosensory nervous system, repetitive stimuli of seven different modalities (touch, vibration, pinprick, cold, contact heat, laser, and warmth) were synchronized with the electroencephalogram (EEG) and applied on the cheek and dorsum of the hand and dorsum of the foot in 21 healthy subjects and three polyneuropathy (PNP) patients. Latencies and amplitudes of the modalities were assessed and compared. Patients received quantitative sensory testing (QST) as reference.ResultsWe found reproducible evoked potentials recordings for touch, vibration, pinprick, contact-heat, and laser stimuli. The recording of warm-evoked potentials was challenging in young healthy subjects and not applicable in patients. Latencies were shortest within Aβ-fiber-mediated signals and longest within C-fibers. The test protocol detected function loss within the Aβ-fiber and Aδ-fiber-range in PNP patients. This function loss corresponded with QST findings.ConclusionIn this pilot study, we developed a neurophysiological test protocol that can specifically assess most of the somatosensory modalities. Despite technical challenges, initial patient data appear promising regarding a possible future clinical application.SignificanceEstablished and custom-made stimulators were combined to assess different fiber subtypes of the somatosensory nervous system using modality-specific evoked potentials. 相似文献