全文获取类型
收费全文 | 2169篇 |
免费 | 155篇 |
国内免费 | 2篇 |
学科分类
医药卫生 | 2326篇 |
出版年
2023年 | 22篇 |
2022年 | 12篇 |
2021年 | 39篇 |
2020年 | 35篇 |
2019年 | 44篇 |
2018年 | 51篇 |
2017年 | 44篇 |
2016年 | 48篇 |
2015年 | 56篇 |
2014年 | 68篇 |
2013年 | 101篇 |
2012年 | 169篇 |
2011年 | 125篇 |
2010年 | 78篇 |
2009年 | 69篇 |
2008年 | 125篇 |
2007年 | 125篇 |
2006年 | 121篇 |
2005年 | 149篇 |
2004年 | 138篇 |
2003年 | 109篇 |
2002年 | 119篇 |
2001年 | 26篇 |
2000年 | 33篇 |
1999年 | 37篇 |
1998年 | 21篇 |
1997年 | 18篇 |
1996年 | 23篇 |
1995年 | 15篇 |
1994年 | 11篇 |
1993年 | 13篇 |
1992年 | 23篇 |
1991年 | 24篇 |
1990年 | 18篇 |
1989年 | 10篇 |
1988年 | 12篇 |
1986年 | 11篇 |
1985年 | 16篇 |
1984年 | 8篇 |
1983年 | 7篇 |
1982年 | 10篇 |
1979年 | 9篇 |
1978年 | 9篇 |
1977年 | 9篇 |
1976年 | 12篇 |
1975年 | 11篇 |
1974年 | 13篇 |
1971年 | 8篇 |
1970年 | 11篇 |
1968年 | 7篇 |
排序方式: 共有2326条查询结果,搜索用时 46 毫秒
71.
Current assessments of quality and safety education in nursing 总被引:1,自引:0,他引:1
Concerns about the quality and safety of health care have changed practice expectations and created a mandate for change in the preparation of health care professionals. The Quality and Safety Education for Nurses project team conducted a survey to assess current levels of integration of quality and safety content in pre-licensure nursing curricula. Views of 195 nursing program leaders are presented, including information about satisfaction with faculty expertise and student competency development related to 6 domains that define quality and safety content: patient-centered care, teamwork and collaboration, evidence-based practice, quality improvement, safety, and informatics. With competency definitions as the sole reference point, survey respondents indicated that quality and safety content was embedded in current curricula, and they were generally satisfied that students were developing the desired competencies. These data are contrasted with work reported elsewhere in this issue of Nursing Outlook and readers are invited to consider a variety of interpretations of the differences. 相似文献
72.
Haisma JA Bussmann JB Stam HJ Sluis TA Bergen MP Post MW Dallmeijer AJ van der Woude LH 《Clinical rehabilitation》2007,21(10):932-940
OBJECTIVE: To assess the association between physical fitness and its recovery over time on the one hand, and complications and duration of phases of rehabilitation on the other. DESIGN AND SETTING: Prospective cohort study at eight rehabilitation centres. SUBJECTS: People with a spinal cord injury were assessed four times: at the start of active rehabilitation (n = 110), three months later (n = 92), at discharge (n = 137) and a year after discharge from inpatient rehabilitation (n = 91). MAIN MEASURES: Physical fitness was defined as aerobic capacity, determined at each occasion by the peak oxygen uptake (peak Vo(2); L/min) and the peak power output (peak PO; W) during a maximal exercise test. On these occasions, spasticity, musculoskeletal and neurogenic pain were determined (1 = present; 0 = absent). During inpatient rehabilitation, complications (urinary tract infection, pulmonary infection or pressure sore) and bed rest were registered (1 = complication; 0 = no complications, and 1 = bed rest; 0 = no bed rest). Complications and bed rest occurring during the year after discharge were registered similarly. RESULTS: Multilevel random coefficient analyses revealed associations in multivariate models (P 相似文献
73.
Swennen GR Mommaerts MY Abeloos J De Clercq C Lamoral P Neyt N Casselman J Schutyser F 《The Journal of craniofacial surgery》2007,18(3):533-539
A detailed visualization of the interocclusal relationship is essential in a three-dimensional virtual planning setup for orthognathic and facial orthomorphic surgery. The purpose of this study was to introduce and evaluate the use of a wax bite wafer in combination with a double computed tomography (CT) scan procedure to augment the three-dimensional virtual model of the skull with a detailed dental surface. A total of 10 orthognathic patients were scanned after a standardized multislice CT scanning protocol with dose reduction with their wax bite wafer in place. Afterward, the impressions of the upper and lower arches and the wax bite wafer were scanned for each patient separately using a high-resolution standardized multislice CT scanning protocol. Accurate fitting of the virtual impressions on the wax bite wafer was done with surface matching using iterative closest points. Consecutively, automatic rigid point-based registration of the wax bite wafer on the patient scan was performed to implement the digital virtual dental arches into the patient's skull model (Maxilim, version 2.0; Medicim NV, St-Niklaas, Belgium). Probability error histograms showed errors of < or =0.16 mm (25% percentile), < or =0.31 mm (50% percentile), and < or =0.92 (90% percentile) for iterative closest point surface matching. The mean registration error for automatic point-based registration was 0.17 +/- 0.07 mm (range, 0.12-0.22 mm). The combination of the wax bite wafer with the double CT scan procedure allowed for the setup of an accurate three-dimensional virtual augmented model of the skull with detailed dental surface. However, from a clinical workload, data handling, and computational point of view, this method is too time-consuming to be introduced in the clinical routine. 相似文献
74.
75.
Rempel GR 《Journal of pediatric nursing》2004,19(1):13-24
Ongoing technological advances in pediatrics are improving the survival rates among babies born with life-threatening anomalies. For these neonates, surgeries like brain shunts, trachea, gut and heart reconstruction, and organ transplants are replacing palliative care. Although parents and health care professionals alike are celebrating the successes, advancing technology also raises issues for everyone involved. This paper incorporates Dunst and Trivette's Effective Helpgiving framework and the Calgary Family Intervention Model to recommend nursing care that moves beyond life-saving highly technical surgical procedures and responds to the challenges parents face with their children with complex congenital heart disease, for example, who have "beat the odds." 相似文献
76.
77.
78.
Marlene H. van Knobelsdorff Nikki G. van Bergen John van der Kamp Ludovic Seifert Dominic Orth 《Scandinavian journal of medicine & science in sports》2020,30(12):2485-2497
The capability to adapt to changing conditions is crucial for safe and successful performance in physical activities and sports. According to the affordance-based control perspective, individuals act in such a way as to take into account the limits of their capability to act. However, it is not clear how strength interacts with skill in shaping performer-environment interactions. We, therefore, determined whether fingertip strength influences patterns of gaze and climbing behavior on new routes of ever-increasing difficulty. We expected that comparatively weaker climbers would show less complex behavior because of an inability to perceive and act. Stronger climbers would show more complex visuo-motor behavior because more opportunities for action remain, even as route difficulty increases. For very strong climbers the route would not be challenging enough, and less complex patterns suffice. Twenty climbers, ranging from lower grade to elite level participated. Maximum fingertip strength was obtained. Participants previewed and then climbed two separate 3 m long traverses, gradually decreasing in edge depth. Gaze and hip positions were collected for subsequent computation of gaze transition entropy (during preview) and hip displacement entropy (during climbing). Data revealed statistically significant curvilinear relationships between both fingertip strength and gaze transition entropy, and fingertip strength, and hip displacement entropy. Visuo-motor complexity is scaled by how close the individual must act relative to boundaries of what the environment affords and does not afford for action given the individual constraints. Future research should examine in greater detail relationships between action capabilities and functional movement variability. 相似文献
79.
Erin K. Sauber-Schatz Bethany A. West Gwen Bergen 《MMWR. Morbidity and mortality weekly report》2014,63(5):113-118
Background
Motor vehicle crashes are a leading cause of death among children in the United States. Age- and size-appropriate child restraint use is the most effective method for reducing these deaths.Methods
CDC analyzed 2002–2011 data from the Fatality Analysis Reporting System to determine the number and rate of motor-vehicle occupant deaths, and the proportion of unrestrained child deaths among children aged <1 year, 1–3 years, 4–7 years, 8–12 years, and for all children aged 0–12 years. Age group–specific death rates and proportions of unrestrained child motor vehicle deaths for 2009–2010 were further stratified by race/ethnicity.Results
Motor vehicle occupant death rates for children declined significantly from 2002 to 2011. However, one third (33%) of children who died in 2011 were unrestrained. Compared with white children for 2009–2010, black children had significantly higher death rates, and black and Hispanic children both had significantly higher proportions of unrestrained child deaths.Conclusions
Motor vehicle occupant deaths among children in the United States have declined in the past decade, but more deaths could be prevented if restraints were always used.Implications for Public Health
Effective interventions, including child passenger restraint laws (with child safety seat/booster seat coverage through at least age 8 years) and child safety seat distribution plus education programs, can increase restraint use and reduce child motor vehicle deaths. 相似文献80.
Jennifer L. Goldstein PhD MS Gwen Dickerson BS Priya S. Kishnani MD Catherine Rehder PhD Deeksha S. Bali PhD 《Muscle & nerve》2014,49(5):775-776
Introduction: We have identified a large consanguineous Lebanese family with 5 individuals with severe childhood‐onset recessive sensory loss associated with deafness and variable optic atrophy. Methods: Autozygosity mapping was performed in all affected individuals, followed by whole‐exome sequencing (WES) in 2 individuals. Results: WES identified a homozygous missense mutation (c.916G>A, p.G306R) in the cerebral riboflavin transporter SLC52A2, recently shown to cause Brown‐Vialetto‐Van‐Laere syndrome (BVVLS), which is considered primarily a motor neuronopathy. Our patients have a phenotype distinct from BVVLS, characterized by severe progressive sensory loss mainly affecting vibration and proprioception that evolves to include sensorineural hearing loss in childhood, variable degrees of optic atrophy, and marked upper extremity weakness and atrophy. Treatment of 3 patients with 400 mg/day riboflavin over 3 months produced definite clinical improvement. Conclusions: Mutations in SLC52A2 result in a recognizable phenotype distinct from BVVLS. Early recognition of this disorder is critical, given its potential treatability. Muscle Nerve 50 : 775–779, 2014 相似文献