全文获取类型
收费全文 | 14251篇 |
免费 | 1282篇 |
国内免费 | 244篇 |
专业分类
耳鼻咽喉 | 61篇 |
儿科学 | 222篇 |
妇产科学 | 232篇 |
基础医学 | 444篇 |
口腔科学 | 184篇 |
临床医学 | 1926篇 |
内科学 | 1455篇 |
皮肤病学 | 54篇 |
神经病学 | 465篇 |
特种医学 | 161篇 |
外国民族医学 | 1篇 |
外科学 | 921篇 |
综合类 | 1257篇 |
现状与发展 | 1篇 |
一般理论 | 11篇 |
预防医学 | 4339篇 |
眼科学 | 109篇 |
药学 | 3021篇 |
10篇 | |
中国医学 | 497篇 |
肿瘤学 | 406篇 |
出版年
2023年 | 309篇 |
2022年 | 297篇 |
2021年 | 671篇 |
2020年 | 661篇 |
2019年 | 634篇 |
2018年 | 613篇 |
2017年 | 630篇 |
2016年 | 544篇 |
2015年 | 524篇 |
2014年 | 886篇 |
2013年 | 1202篇 |
2012年 | 802篇 |
2011年 | 863篇 |
2010年 | 692篇 |
2009年 | 693篇 |
2008年 | 691篇 |
2007年 | 699篇 |
2006年 | 543篇 |
2005年 | 466篇 |
2004年 | 403篇 |
2003年 | 392篇 |
2002年 | 313篇 |
2001年 | 269篇 |
2000年 | 216篇 |
1999年 | 168篇 |
1998年 | 147篇 |
1997年 | 146篇 |
1996年 | 117篇 |
1995年 | 125篇 |
1994年 | 120篇 |
1993年 | 69篇 |
1992年 | 91篇 |
1991年 | 72篇 |
1990年 | 72篇 |
1989年 | 51篇 |
1988年 | 46篇 |
1987年 | 38篇 |
1986年 | 58篇 |
1985年 | 63篇 |
1984年 | 68篇 |
1983年 | 31篇 |
1982年 | 44篇 |
1981年 | 40篇 |
1980年 | 32篇 |
1979年 | 23篇 |
1978年 | 26篇 |
1977年 | 27篇 |
1976年 | 29篇 |
1975年 | 16篇 |
1974年 | 14篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
31.
AbstractIn the field of alcohol, drug, tobacco, and gambling studies, empirical research on the barriers and facilitators for public prevention policies has been scarce. Public policy studies show that the implementers of different organizational positions impact on policy implementation. In this paper, the barriers and facilitators for the implementation of an integrated national policy for addiction prevention, as seen from the positions of managers, prevention specialists, and frontline workers, are analyzed on the basis of qualitative interview data. The results indicate that the managers were structurally oriented in their thinking and emphasized local structures as facilitators. All the groups saw prevention as underfunded and undervalued. The specialists were most focused on the official structures and regarded the functioning of the structures as a key facilitator. The frontline workers underlined that their position was a facilitator in itself, offering a unique viewpoint to the localities and to the lives of their clients. A key finding is also the normalcy of gambling that both the specialist and frontline workers regarded as a major barrier. The results show that studying the policy implementation context is important: it makes it possible to understand social and cultural factors that can function as barriers or facilitators. 相似文献
32.
目的探讨替加环素治疗多重耐药鲍曼不动杆菌(MDRAB)颅内感染的临床经验。方法分析中国人民解放军总医院第四医学中心神经外科2014年10月1日—2016年8月1日收治的6例MDRAB颅内感染患者的临床资料。记录患者脑脊液(CSF)的性状,细菌学及药敏试验结果。所有患者均根据CSF检验结果在常规治疗的基础上,给予替加环素50 mg(首次100 mg)静脉注射,1次/12 h;并以浓度为0.5 mg/mL的替加环素10 mL缓慢鞘内注射,1次/d,疗程9~21 d,平均14 d;观察临床疗效。结果6例MDRAB感染患者颅内感染均有效控制,未出现感染相关的神经功能障碍。随访1年,患者无感染复发。结论临床上替加环素的耐药率低,对MDRAB敏感性较高,但其血-脑屏障通过率低。颅内感染MDRAB后采用替加环素静脉滴注,并且同期行鞘内注射治疗,效果明显,临床未出现药物相关的神经功能障碍。 相似文献
33.
《Journal of infection and chemotherapy》2020,26(8):847-850
Aspergillus empyema is treated with either systemic administration of antifungal drugs or surgery, but the mortality rate is very high. Here, we report a case of Aspergillus empyema successfully treated using combined intrathoracic and intravenous administration of voriconazole (VRCZ). Treatment success was achieved by monitoring VRCZ plasma trough concentration. The patient was a 71-year-old Japanese woman diagnosed with Aspergillus empyema whom we started on intravenous administration of VRCZ. Although penetration of VRCZ into the pleural effusion was confirmed, the level was below 1 μg/mL, which is the minimum inhibitory concentration for Aspergillus fumigatus determined by antifungal susceptibility testing in pleural effusion culture. Therefore, we initiated combination therapy with intrathoracic and intravenous administration of VRCZ. VRCZ 200 mg was first dissolved in 50–100 mL of saline and administered into the thoracic cavity via a chest tube. The chest tube was clamped for 5–6 h, and then VRCZ solution was excreted though the chest tube. When a single dose of the VRCZ was administered into the intrathoracic space, the plasma concentration before intravenous administration increased from 1.45 μg/mL on day 27 to 1.53 μg/mL on day 28. Although intravenous administration was continued, the VRCZ plasma trough concentration decreased to 1.36 μg/mL on day 29. We therefore decided on an intrathoracic administration schedule of 2–3 times a week. Intrathoracic administration was performed 14 times in total until fenestration surgery on day 64. Our case suggests that combined intrathoracic and intravenous administration of VRCZ may be a valid treatment option for Aspergillus empyema. 相似文献
34.
随着国家二孩政策的全面放开,有相当一部分女性在备孕二孩时面临着不孕的困扰,其中心理因素影响所占的比例日益增高。本文从《傅青主女科 种子门》关于不孕的论述入手,分析了肝郁不孕的机理,强调临证治疗中注重疏肝解郁,及必要的心理疏导治疗,从而提高二孩妊娠率。 相似文献
35.
36.
本文在梳理英国医保药品报销政策的基础上,通过对价值定价理念的深入研究和理解,系统探讨其在报销政策制定过程中对药品目录遴选、价值测算、支付标准确定、医保基金平衡和报销效益评估的作用机制,并深入思考通过价值定价理念建立起的药物警戒体系与药品报销政策间的衔接机制。在此基础上总结价值定价理念的特点、应用阶段和具体操作方法,以期为我国提供借鉴。 相似文献
37.
目的:评价地塞米松不同给药途径(冠周局部注射和口服)在预防下颌阻生第三磨牙拔除术后肿胀、疼痛及张口受限中的疗效。方法:对480例患者的下颌阻生第三磨牙根据阻生类型进行分组(高位、中位、低位),每组中再分为实验组(拔牙术后局部注射地塞米松)和对照组(拔牙术后口服地塞米松),对患者术后第1、3、7天进行随访分析,对患者肿胀指数、疼痛程度和张口受限程度进行统计分析。结果:在拔牙术后第1天和第7天,高位组、中位组和低位组中的实验组与对照组在肿胀指数、疼痛程度和张口受限程度方面比较差异无统计学意义(P>0.05);术后第3天,高位组和中位组中的实验组与对照组在肿胀指数、疼痛程度和张口受限程度差异无统计学意义(P>0.05),低位组中的实验组与对照组相比,在肿胀反应中具有更好的预防效果(P<0.05),在疼痛程度和张口受限程度中具有一定的缓解效果(P>0.05)。结论:下颌阻生第三磨牙拔除术后,冠周局部给予地塞米松能够防治和减轻术后肿胀、疼痛以及张口受限的发生。 相似文献
38.
对近几年来上市的经皮制剂进行文献整理和归纳,通过查阅相关文献,对贴剂、软膏剂、凝胶剂、乳膏剂、泡沫剂、洗剂等经皮给药制剂的特点、上市时间、作用、不良反应等进行总结。经皮制剂是药物通过皮肤吸收的一类外用递药给药系统,可以局部给药也可以全身给药,具有安全性高、毒副作用小、使用方便的优点,是目前国内外研究的热点。 相似文献
39.
《The Journal of emergency medicine》2020,58(1):141-147
BackgroundThe nature of death in the emergency department (ED) may put survivors at higher risk for complicated bereavement. Access to bereavement care could mitigate this, but many EDs do not include bereavement follow-up as part of their routine practice.ObjectiveWe describe the implementation at our institution of ED Grief Support, a program developed to extend care to the bereaved through in-person, telephone, and e-mail follow-up for 1 year after the death of a loved one.MethodsBereavement follow-up was preferentially extended to survivors of patients <45 years of age who were chosen because of the higher likelihood of unexpected death in this age group. Detailed records of each case were collected prospectively using online data management software and outcomes were recorded. Successful strategies to navigate communication and resource referrals are discussed.ResultsWe enrolled 192 patients during our 2-year period of observation. The majority died from trauma and parents were the most common next-of-kin to be contacted. Commonly requested services included: clarification of the circumstances of death, the interpretation of autopsy reports, referral to community bereavement resources, and family meetings. Challenges included supporting the emotional well-being of staff and the resource-intensive nature of the follow-up. Staff members who worked with ED Grief Support find it meaningful and note a positive influence on their well-being as providers.ConclusionsLongitudinal bereavement follow-up from the ED is feasible and had a perceived positive impact on the bereaved as well as ED staff. 相似文献
40.
Hakan Seckinelgin 《Global public health》2020,15(3):321-333
ABSTRACTThis article analyses how the HIV care cascade, an analytical tool, has become a policy practice that determines the direction and content of international AIDS policy. It traces the development of the cascade through from its emergence around 2011 to its position framing global AIDS policy by 2018. The article distinguishes between the cascade model as a mapping tool and the care cascade as a policy that aims to end the AIDS epidemic. It then argues that the move from an analytical to a policy tool has important implications, both for the scope of policies and for policy-relevant research. It concludes by considering its implications in determining policy direction. The qualitative research that informs the article is based on published care cascade research and policy documents, and observations of the presentations and discussions at the 2012 and 2018 International AIDS Conferences (IAS). The article uses textual analysis to develop its argument. 相似文献