全文获取类型
收费全文 | 126873篇 |
免费 | 7094篇 |
国内免费 | 4337篇 |
专业分类
耳鼻咽喉 | 242篇 |
儿科学 | 2001篇 |
妇产科学 | 752篇 |
基础医学 | 9761篇 |
口腔科学 | 305篇 |
临床医学 | 16318篇 |
内科学 | 23813篇 |
皮肤病学 | 230篇 |
神经病学 | 20999篇 |
特种医学 | 6822篇 |
外国民族医学 | 1篇 |
外科学 | 8390篇 |
综合类 | 23084篇 |
现状与发展 | 4篇 |
预防医学 | 4210篇 |
眼科学 | 524篇 |
药学 | 12339篇 |
98篇 | |
中国医学 | 6385篇 |
肿瘤学 | 2026篇 |
出版年
2024年 | 203篇 |
2023年 | 1127篇 |
2022年 | 2515篇 |
2021年 | 3690篇 |
2020年 | 3363篇 |
2019年 | 2748篇 |
2018年 | 2878篇 |
2017年 | 3371篇 |
2016年 | 3755篇 |
2015年 | 3738篇 |
2014年 | 7513篇 |
2013年 | 7789篇 |
2012年 | 7261篇 |
2011年 | 7947篇 |
2010年 | 6847篇 |
2009年 | 6492篇 |
2008年 | 6848篇 |
2007年 | 6846篇 |
2006年 | 6618篇 |
2005年 | 5726篇 |
2004年 | 4811篇 |
2003年 | 4352篇 |
2002年 | 3667篇 |
2001年 | 3476篇 |
2000年 | 3045篇 |
1999年 | 2595篇 |
1998年 | 2149篇 |
1997年 | 2056篇 |
1996年 | 1652篇 |
1995年 | 1473篇 |
1994年 | 1327篇 |
1993年 | 1077篇 |
1992年 | 978篇 |
1991年 | 925篇 |
1990年 | 787篇 |
1989年 | 619篇 |
1988年 | 603篇 |
1987年 | 599篇 |
1986年 | 519篇 |
1985年 | 657篇 |
1984年 | 580篇 |
1983年 | 381篇 |
1982年 | 425篇 |
1981年 | 421篇 |
1980年 | 331篇 |
1979年 | 291篇 |
1978年 | 230篇 |
1977年 | 210篇 |
1976年 | 172篇 |
1973年 | 132篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
5.
《The Journal for Nurse Practitioners》2022,18(2):245-247
Transient stress hyperglycemia in the setting of acute myocardial infarction is a frequent phenomenon. Its transient nature should not dissuade the clinician from management of elevated blood glucose in a patient after an ST-elevation myocardial infarction. This case presents an adult patient after an ST-elevation myocardial infarction with transient stress hyperglycemia and the evidence used to identify optimal pharmacologic management and secondary prevention. 相似文献
6.
7.
目的:探讨血化瘀方联合针灸治疗对脑梗后遗症患者脑血管血液流变动力学及神经功能的影响。方法:选取2016年1月至2017年1月沈阳市第二中医医院收治脑梗后遗症患者120例作为研究对象,对照组61例患者接受针灸治疗;观察组59例患者接受活血化瘀方联合针灸治疗。2组连续治疗30 d。比较2组患者脑血流流变学指标、神经功能评分、中医证候积分、临床疗效。结果:治疗前2组患者脑部平均血流速度、左侧椎动脉血流量、右侧椎动脉血流量、基底动脉血流量比较,差异无统计学意义(P 0. 05)。治疗后观察组患者脑部平均血流速度、左侧椎动脉血流量、右侧椎动脉血流量、基底动脉血流量大于对照组(P 0. 05)。治疗前2组患者NIHSS评分、MMSE评分比较,差异无统计学意义(P 0. 05)。治疗后观察组患者NIHSS评分显著低于对照组,MMSE评分高于对照组(P 0. 05)。治疗前2组患者头晕目眩、语言謇涩、半身不遂、患侧麻木、舌苔白腻证候评分比较,差异无统计学意义(P 0. 05)。治疗后研究患者头晕目眩、语言謇涩、半身不遂、患侧麻木、舌苔白腻证候评分显著低于对照组(P 0. 05)。2组患者临床疗效比较,差异有统计学意义(Z=-5. 626,P=0. 000)。结论:活血化瘀方联合针灸能改善脑梗后遗症患者脑血管血液流变动力学指标,保护神经功能。 相似文献
8.
《Journal of vascular and interventional radiology : JVIR》2020,31(12):1993-1997
PurposeTo examine the long-term clinical outcomes of patients with anti-centromere antibody (ACA)-positive critical limb-threatening ischemia (CLTI) who were treated with endovascular therapy (EVT).Materials and MethodsThis was a retrospective analysis using a database of 423 consecutive CLTI patients (543 limbs, Rutherford class 4–6) who underwent EVT between January 2011 and March 2013. The patients were divided into 2 groups: an ACA-positive group (10 limbs, 8 patients) and a control group (46 limbs, 43 patients). The control group was defined as female, non-dialysis, and those who were able to obtain a below-knee angiogram.ResultsNone of the 8 ACA-positive CLTI patients had previously been diagnosed as ACA positive. No significant difference was observed in the below-the-knee lesion distribution and severity between the ACA-positive group and the control group. The median observational period was 51 months. The survival rate was 54% in the ACA-positive group and 76% in the control group at 5 years after EVT (P = .732). The freedom from major amputation rate was 60% in the ACA-positive group and 91% in the control group at 5 years after EVT (P = .029). The technical EVT success rate in the ACA-positive group was 70% (7/10). Of the successful EVT cases, 71% (5/7) of patients achieved complete wound healing or rest pain relief; however, 60% (3/5) had a recurrence of wounds.ConclusionsIn a series of ACA-positive patients with CLTI, successful EVT had acceptable outcomes with respect to wound healing with short-term results. However, the major amputation rate for ACA-positive patients was high in long-term follow-up. 相似文献
9.
10.
In this article, we draw on recent scholarly work in the poststructuralist analysis of policy to consider how policy itself functions as a key site in the constitution of alcohol ‘problems’, and the political implications of these problematisations. We do this by examining Australian alcohol policy as it relates to young adults (18–24 years old). Our critical analysis focuses on three national alcohol policies (1990, 2001 and 2006) and two Victorian state alcohol policies (2008 and 2013), which together span a 25-year period. We argue that Australian alcohol policies have conspicuously ignored young adult men, despite their ongoing over-representation in the statistical ‘evidence base’ on alcohol-related harm, while increasingly problematising alcohol consumption amongst other population subgroups. We also identify the development of a new problem representation in Australian alcohol policy, that of ‘intoxication’ as the leading cause of alcohol-related harm and rising hospital admissions, and argue that changes in the classification and diagnosis of intoxication may have contributed to its prioritisation and problematisation in alcohol policy at the expense of other forms of harm. Finally, we draw attention to how preliminary and inconclusive research on the purported association between binge drinking and brain development in those under 25 years old has been mobilised prematurely to support calls to increase the legal purchasing age from 18 to 21 years. Our critical analysis of the treatment of these three issues – gender, intoxication, and brain development – is intended to highlight the ways in which policy functions as a key site in the constitution of alcohol ‘problems’. 相似文献