全文获取类型
收费全文 | 53182篇 |
免费 | 4532篇 |
国内免费 | 1247篇 |
专业分类
耳鼻咽喉 | 860篇 |
儿科学 | 4230篇 |
妇产科学 | 774篇 |
基础医学 | 7439篇 |
口腔科学 | 460篇 |
临床医学 | 5540篇 |
内科学 | 8120篇 |
皮肤病学 | 490篇 |
神经病学 | 2241篇 |
特种医学 | 794篇 |
外国民族医学 | 3篇 |
外科学 | 2062篇 |
综合类 | 8642篇 |
现状与发展 | 6篇 |
一般理论 | 1篇 |
预防医学 | 6198篇 |
眼科学 | 472篇 |
药学 | 5145篇 |
56篇 | |
中国医学 | 4668篇 |
肿瘤学 | 760篇 |
出版年
2024年 | 160篇 |
2023年 | 916篇 |
2022年 | 1624篇 |
2021年 | 2394篇 |
2020年 | 2307篇 |
2019年 | 2004篇 |
2018年 | 2049篇 |
2017年 | 1929篇 |
2016年 | 2177篇 |
2015年 | 1911篇 |
2014年 | 3780篇 |
2013年 | 4861篇 |
2012年 | 3527篇 |
2011年 | 3574篇 |
2010年 | 2768篇 |
2009年 | 2498篇 |
2008年 | 2396篇 |
2007年 | 2536篇 |
2006年 | 2256篇 |
2005年 | 1839篇 |
2004年 | 1579篇 |
2003年 | 1439篇 |
2002年 | 1078篇 |
2001年 | 1042篇 |
2000年 | 854篇 |
1999年 | 788篇 |
1998年 | 572篇 |
1997年 | 558篇 |
1996年 | 461篇 |
1995年 | 370篇 |
1994年 | 340篇 |
1993年 | 244篇 |
1992年 | 209篇 |
1991年 | 187篇 |
1990年 | 203篇 |
1989年 | 169篇 |
1988年 | 126篇 |
1987年 | 131篇 |
1986年 | 111篇 |
1985年 | 190篇 |
1984年 | 128篇 |
1983年 | 114篇 |
1982年 | 112篇 |
1981年 | 83篇 |
1980年 | 101篇 |
1979年 | 51篇 |
1978年 | 52篇 |
1977年 | 33篇 |
1976年 | 36篇 |
1974年 | 21篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
11.
12.
13.
14.
目的探讨品管圈活动在喜疗妥联合新鲜马铃薯外敷治疗小儿输液外渗中的应用效果。方法选取我院2016年8月至2018年12月收治的输液外渗患儿100例,随机分为两组各50例。对照组给予50%硫酸镁湿敷治疗与常规护理,干预组采用喜疗妥联合新鲜马铃薯外敷,进行品管圈活动。对比两组的临床疗效、损伤痊愈时间和完全消肿时间。结果干预组的总有效率为90.00%,高于对照组的74.00%(P <0.05)。干预组的损伤痊愈时间和完全消肿时间短于对照组(P <0.05)。结论品管圈活动在喜疗妥联合新鲜马铃薯外敷治疗小儿输液外渗中的效果较好,可缩短临床症状消失时间,加快康复进程。 相似文献
15.
《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
16.
Alessandro Vatrella Angelantonio Maglio Corrado Pelaia Girolamo Pelaia Carolina Vitale 《Expert opinion on pharmacotherapy》2020,21(12):1505-1515
ABSTRACT
Introduction
‘Critical Asthma Syndrome’ (CAS) is an umbrella term proposed to include several forms of asthma, responsible for acute and life-threatening exacerbations. CAS requires urgent and adequate supportive and pharmacological treatments to prevent serious outcomes. 相似文献17.
目的:探讨分析补肾纳气法治疗小儿支气管哮喘的临床效果。方法方便选取该院儿科于2013年3月—2014年11月收治的小儿支气管哮喘患者67例,根据随机数字法分为对照组33例和观察组34例,对照组患者予以氨茶碱片治疗,观察组患者实施补肾纳气法治疗,观察两组患者的治疗效果,进行临床对照性分析。结果对照组患者不良反应发生率24.2%,观察组患者不良反应发生率5.8%,观察组不良反应发生率明显低于对照组(P﹤0.05);对照组患者总有效率60.6%,观察组患者总有效率85.3%。观察组患者治疗后总有效率明显高于对照组(P﹤0.05)。结论补肾纳气法治疗小儿支气管哮喘的临床效果好,应用价值高,值得在临床实践中推广应用。 相似文献
18.
19.
Sadanandavalli Retnaswami Chandra Pawan Raj Thomas Gregor Issac 《Indian journal of dermatology》2015,60(3):290-292
Neurodegeneration with brain iron accumulation (NBIA) is the term applied to a heterogeneous group of disorders resulting in iron deposition in the basal ganglia. Well-known phenotypic features are progressive regression with extra pyramidal involvement and a variable course. A 10-year-old child born to consanguineous parents presented with progressive generalized opisthotonic dystonia, retrocollis, oromandibular dyskinesias, apraxia for swallowing, optic atrophy and severe self-mutilation of lips. MR imaging showed brain iron accumulation. Other causes of self-mutilation were excluded. Early infantile onset, ophisthotonic dystonia with oromandibular dyskinesias and characteristic MR images are suggestive of NBIA. There is only one case reported in the literature of self-mutilation in this condition. 相似文献
20.
《Vaccine》2020,38(42):6508-6516
BackgroundPneumococcal conjugate vaccine (PCV) effectiveness against radiographic pneumonia in South Asia is unknown. Bangladesh introduced PCV10 in 2015 using a three dose primary series (3 + 0). We sought to measure PCV10 effectiveness for two or more vaccine doses on radiographic pneumonia among vaccine-eligible children in rural Bangladesh.MethodsWe conducted a matched case-control study over two years from 2015 to 2017 using clinic and community controls in three subdistricts of Sylhet, Bangladesh. Cases were vaccine eligible 3–35 month olds at Upazila Health Complex outpatient clinics with World Health Organization-defined radiographic primary endpoint pneumonia (radiographic pneumonia). Clinic controls were matched to cases within a one week time window by age, sex, and clinic and had an illness unlikely to be Streptococcus pneumoniae; community controls were healthy and similarly matched within a one week time window by age and sex, and distance from the clinic. We estimated adjusted vaccine effectiveness (aVE) using conditional logistic regression.ResultsWe matched 1262 cases with 2707 clinic and 2461 community controls. Overall, aVE using clinic controls was 21.4% (95% confidence interval, −0.2%, 38.4%) for ≥2 PCV10 doses and among 3–11 month olds was 47.3% (10.5%, 69.0%) for three doses. aVE increased with higher numbers of doses in clinic control sets (p = 0.007). In contrast, aVE using community controls was 7.6% (95% confidence interval, −22.2%, 30.0%) for ≥2 doses. We found vaccine introduction in the study area faster and less variable than expected with 75% coverage on average, which reduced power. Information bias may also have affected community controls.ConclusionsClinic control analyses show PCV10 prevented radiographic pneumonia in Bangladesh, especially among younger children receiving three doses. While both analyses were underpowered, community control enrollment – compared to clinic controls – was more difficult in a complex, pluralistic healthcare system. Future studies in comparable settings may consider alternative study designs. 相似文献