全文获取类型
收费全文 | 122521篇 |
免费 | 10546篇 |
国内免费 | 5415篇 |
专业分类
耳鼻咽喉 | 831篇 |
儿科学 | 2133篇 |
妇产科学 | 3027篇 |
基础医学 | 17336篇 |
口腔科学 | 2253篇 |
临床医学 | 9928篇 |
内科学 | 16730篇 |
皮肤病学 | 1597篇 |
神经病学 | 8017篇 |
特种医学 | 4629篇 |
外国民族医学 | 45篇 |
外科学 | 9132篇 |
综合类 | 20243篇 |
现状与发展 | 12篇 |
一般理论 | 6篇 |
预防医学 | 8544篇 |
眼科学 | 3317篇 |
药学 | 13893篇 |
87篇 | |
中国医学 | 7032篇 |
肿瘤学 | 9690篇 |
出版年
2024年 | 261篇 |
2023年 | 1681篇 |
2022年 | 3346篇 |
2021年 | 4677篇 |
2020年 | 4030篇 |
2019年 | 4015篇 |
2018年 | 3772篇 |
2017年 | 3972篇 |
2016年 | 4097篇 |
2015年 | 4270篇 |
2014年 | 7134篇 |
2013年 | 8104篇 |
2012年 | 7204篇 |
2011年 | 8050篇 |
2010年 | 6567篇 |
2009年 | 6032篇 |
2008年 | 6503篇 |
2007年 | 6583篇 |
2006年 | 6132篇 |
2005年 | 5513篇 |
2004年 | 4649篇 |
2003年 | 4156篇 |
2002年 | 3239篇 |
2001年 | 3010篇 |
2000年 | 2416篇 |
1999年 | 2152篇 |
1998年 | 1777篇 |
1997年 | 1687篇 |
1996年 | 1398篇 |
1995年 | 1361篇 |
1994年 | 1192篇 |
1993年 | 917篇 |
1992年 | 841篇 |
1991年 | 709篇 |
1990年 | 719篇 |
1989年 | 600篇 |
1988年 | 446篇 |
1987年 | 398篇 |
1986年 | 423篇 |
1985年 | 635篇 |
1984年 | 592篇 |
1983年 | 384篇 |
1982年 | 445篇 |
1981年 | 389篇 |
1980年 | 399篇 |
1979年 | 284篇 |
1978年 | 246篇 |
1977年 | 200篇 |
1976年 | 213篇 |
1975年 | 141篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
《Cirugía espa?ola》2022,100(3):149-153
IntroductionThe Law for the Regulation of Health Professions (LOPS) indicates that health professionals will carry out continuous training throughout their professional life, and will regularly prove their professional competence. The objective of the study was to carry out a national survey to find out the opinion of Spanish surgeons and thus be able to prepare a recertification project by the Spanish Association of Surgeons (AEC).MethodsCross-sectional observational study carried out in June-July 2020, through a survey sent to the members of the AEC.ResultsThe survey had a total of 1230 visits and an overall completion rate of 784 responses (67.3%). 69.6% were unaware of the LOPS forecasts and 83.4% were unaware of similar initiatives in other specialties and 95.5% agreed to demand adequate information. 71.4% believed it necessary but only 57% believed that it should be mandatory. 82.9% would agree that it should be regulated through an objective and predictable official procedure.ConclusionsThe concept of re-accreditation is not well known in our specialty and in view of the results obtained, adequate and reliable information seems necessary. Therefore, it would be pertinent to propose by the AEC a specific project to assess activities and skills. 相似文献
5.
《Clinical neurophysiology》2021,132(10):2357-2364
ObjectivesTo investigate the subcortical somatosensory evoked potentials (SEPs) to electrical stimulation of either muscle or cutaneous afferents.MethodsSEPs were recorded in 6 patients suffering from Parkinson’s disease (PD) who underwent electrode implantation in the pedunculopontine (PPTg) nucleus area. We compared SEPs recorded from the scalp and from the intracranial electrode contacts to electrical stimuli applied to: 1) median nerve at the wrist, 2) abductor pollicis brevis motor point, and 3) distal phalanx of the thumb. Also the high-frequency oscillations (HFOs) were analysed.ResultsAfter median nerve and pure cutaneous (distant phalanx of the thumb) stimulation, a P1-N1 complex was recorded by the intracranial lead, while the scalp electrodes recorded the short-latency far-field responses (P14 and N18). On the contrary, motor point stimulation did not evoke any low-frequency component in the PPTg traces, nor the N18 potential on the scalp. HFOs were recorded to stimulation of all modalities by the PPTg electrode contacts.ConclusionsStimulus processing within the cuneate nucleus depends on modality, since only the cutaneous input activates the complex intranuclear network possibly generating the scalp N18 potential.SignificanceOur results shed light on the subcortical processing of the somatosensory input of different modalities. 相似文献
6.
Hannah C. Nordhues Anjali Bhagra Natya N. Stroud Jennifer A. Vencill Carol L. Kuhle 《Mayo Clinic proceedings. Mayo Clinic》2021,96(7):1907-1920
The coronavirus disease 2019 (COVID-19) pandemic has rapidly created widespread impacts on global health and the economy. Data suggest that women are less susceptible to severe illness. However, sex-disaggregated data are incomplete, leaving room for misinterpretation, and focusing only on biologic sex underestimates the gendered impact of the pandemic on women. This narrative review summarizes what is known about gender disparities during the COVID-19 pandemic and the economic, domestic, and health burdens along with overlapping vulnerabilities related to the pandemic. In addition, this review outlines recommended strategies that advocacy groups, community leaders, and policymakers should implement to mitigate the widening gender disparities related to COVID-19. 相似文献
7.
《Clinical neurophysiology》2021,132(9):2003-2011
ObjectiveA large N20 and P25 of the median nerve somatosensory evoked potential (SEP) predicts short survival in amyotrophic lateral sclerosis (ALS). We investigated whether high frequency oscillations (HFOs) over N20 are enlarged and associated with survival in ALS.MethodsA total of 145 patients with ALS and 57 healthy subjects were studied. We recorded the median nerve SEP and measured the onset-to-peak amplitude of N20 (N20o-p), and peak-to-peak amplitude between N20 and P25 (N20p-P25p). We obtained early and late HFO potentials by filtering SEP between 500 and 1 kHz, and measured the peak-to-peak amplitude. We followed up patients until endpoints (death or tracheostomy) and analyzed the relationship between SEP or HFO amplitudes and survival using a Cox analysis.ResultsPatients showed larger N20o-p, N20p-P25p, and early and late HFO amplitudes than the control values. N20p-P25p was associated with survival periods (p = 0.0004), while early and late HFO amplitudes showed no significant association with survival (p = 0.4307, and p = 0.6858, respectively).ConclusionsThe HFO amplitude in ALS is increased, but does not predict survival.SignificanceThe enlarged HFOs in ALS might be a compensatory phenomenon to the hyperexcitability of the sensory cortex pyramidal neurons. 相似文献
8.
9.
10.