全文获取类型
收费全文 | 22992篇 |
免费 | 1701篇 |
国内免费 | 49篇 |
学科分类
医药卫生 | 24742篇 |
出版年
2024年 | 25篇 |
2023年 | 248篇 |
2022年 | 186篇 |
2021年 | 854篇 |
2020年 | 550篇 |
2019年 | 872篇 |
2018年 | 918篇 |
2017年 | 702篇 |
2016年 | 676篇 |
2015年 | 783篇 |
2014年 | 1049篇 |
2013年 | 1413篇 |
2012年 | 2040篇 |
2011年 | 2026篇 |
2010年 | 1105篇 |
2009年 | 888篇 |
2008年 | 1565篇 |
2007年 | 1586篇 |
2006年 | 1404篇 |
2005年 | 1394篇 |
2004年 | 1220篇 |
2003年 | 1045篇 |
2002年 | 952篇 |
2001年 | 139篇 |
2000年 | 86篇 |
1999年 | 122篇 |
1998年 | 170篇 |
1997年 | 140篇 |
1996年 | 108篇 |
1995年 | 66篇 |
1994年 | 52篇 |
1993年 | 63篇 |
1992年 | 40篇 |
1991年 | 39篇 |
1990年 | 26篇 |
1989年 | 22篇 |
1988年 | 17篇 |
1987年 | 13篇 |
1986年 | 22篇 |
1985年 | 20篇 |
1984年 | 14篇 |
1983年 | 8篇 |
1982年 | 9篇 |
1981年 | 7篇 |
1979年 | 5篇 |
1977年 | 5篇 |
1975年 | 4篇 |
1974年 | 5篇 |
1973年 | 7篇 |
1970年 | 6篇 |
排序方式: 共有10000条查询结果,搜索用时 109 毫秒
991.
992.
S. Alex Stalcup Darrell Christian Janice Stalcup Michelle Brown Gantt P. Galloway 《Journal of psychoactive drugs》2013,45(2):189-202
Abstract This article presents an addiction treatment model based on craving identification and management (CIM). Craving is broadly defined as the desire to use alcohol or other drugs; it increases the likelihood of use of these substances. In the CIM Model treatment interventions are referenced to craving, i.e., helping clients to identify their craving level and equipping them with strategies to avoid use. Four causes of craving are identified: (1) environmental cues (triggers): exposure to people, places, and things associated with prior drug-using experiences may cause immediate and overwhelming craving; (2) stress: addicted persons experience stress as craving; (3) mental illness; and (4) drug withdrawal: symptoms of both mental illness and withdrawal lead to craving if clients associate use with relief of these symptoms. The CIM Model incorporates four service delivery elements: Relapse Prevention Workshop, individual counseling, medical/psychiatric services, and screening for ongoing drug use. At its core, the CIM Model asks clients to be aware of craving. analyze its causes, and, based on those causes, implement specific strategies to prevent and manage craving. The CIM Model combines several treatment components. including control of exposure to environmental cues, establishment of a daily schedule, the use of behaviors that dissipate craving (tools), and treatment (with medications when appropriate) of mental health and withdrawal symptoms. The CIM Model is a client-derived approach to achieving and maintaining sobriety based on a process of analyzing craving and managing it with an individualized program of recovery activities. 相似文献
993.
Pulmonary arterial hypertension is a progressive disorder that may result in right heart failure and death. Atrial level shunts in the presence of pulmonary hypertension may allow right‐to‐left mixing with maintenance of cardiac output and improved survival. However, excessive mixing at the atrial level can cause undue systemic desaturation, increased fatigue and decreased exercise tolerance even in the presence of adequate cardiac output. A 5½‐year‐old was diagnosed with pulmonary hypertension, a large atrial septal defect and right‐to‐left shunting. Medical therapy over an 18‐month period was successful in decreasing pulmonary artery pressure and pulmonary vascular resistance. However, because of the size and position of the intracardiac defect, symptoms of fatigue, and severe systemic desaturation with only minor activities persisted. Fenestrated surgical closure of the defect was thus undertaken to decrease the degree of atrial mixing, but still allow atrial decompression if necessary. Subsequent hemodynamic evaluation has demonstrated continued improvement, and all previous symptoms have resolved. Repeated echocardiography has confirmed patency of the atrial fenestration with left‐to‐right atrial flow. 相似文献
994.
Pat Sevean Sally Dampier Michelle Spadoni Shane Strickland Susan Pilatzke 《Journal of clinical nursing》2009,18(18):2573-2579
Aim. To explore patients’ and families’ experiences with video telehealth consultations as a method of health care delivery in rural/ remote communities in Northern Canada. Background. Accessing health services in isolated populations where human resources and infrastructure are constrained by vast geographical landmasses poses challenges and opportunities for nurses, health care providers, patients and families. Design. A qualitative approach was adopted with a purposeful sample of 10 patients and four family members representative of nine communities. Method. Selection criteria included patients receiving telehealth visits for a minimum of a year and willing to share their experiences. Data were collected during the winter of 2006 using semi‐structured video taped interviews and analysed using a qualitative thematic content analysis. Results. Patients and families experiences of their telehealth visits centered on three key themes: lessening the burden (costs of travel, accommodations, lost wages, lost time and physical limitations), maximising supports (access to family, friends, familiar home environment, nurses and other care providers), tailoring specific e‐health systems to enhance patient and family needs. Conclusion. The benefits of telehealth extend not only to patients and families but are linked to benefits for providers as well as the health care system. Relevance to clinical practice. This study indicates that video telehealth is an effective mechanism for delivering nursing and other health services to rural/remote communities and can impact positively on the quality of health care. The integration of telehealth practice can enhance the coordination, organisation and implementation of health care services. 相似文献
995.
996.
997.
998.
999.
Michelle Mourad Jeffrey Kohlwes Judith Maselli MERN Group Andrew D. Auerbach 《Journal of general internal medicine》2010,25(4):351-356
BACKGROUND
At teaching hospitals, bedside procedures (paracentesis, thoracentesis, lumbar puncture, arthrocentesis and central venous catheter insertion) are performed by junior residents and supervised by senior peers. Residents’ perceptions about supervision or how often peer supervision produces unsafe clinical situations are unknown. 相似文献1000.
Jennifer Philip Michelle Gold Max Schwarz Paul Komesaroff 《Supportive care in cancer》2010,18(9):1199-1205