全文获取类型
收费全文 | 23460篇 |
免费 | 2175篇 |
国内免费 | 681篇 |
学科分类
医药卫生 | 26316篇 |
出版年
2024年 | 182篇 |
2023年 | 1004篇 |
2022年 | 1634篇 |
2021年 | 1838篇 |
2020年 | 1598篇 |
2019年 | 1008篇 |
2018年 | 767篇 |
2017年 | 877篇 |
2016年 | 794篇 |
2015年 | 734篇 |
2014年 | 1517篇 |
2013年 | 1709篇 |
2012年 | 1248篇 |
2011年 | 1438篇 |
2010年 | 1017篇 |
2009年 | 1023篇 |
2008年 | 1037篇 |
2007年 | 1035篇 |
2006年 | 917篇 |
2005年 | 707篇 |
2004年 | 565篇 |
2003年 | 492篇 |
2002年 | 406篇 |
2001年 | 338篇 |
2000年 | 300篇 |
1999年 | 227篇 |
1998年 | 228篇 |
1997年 | 222篇 |
1996年 | 155篇 |
1995年 | 117篇 |
1994年 | 103篇 |
1993年 | 110篇 |
1992年 | 84篇 |
1991年 | 72篇 |
1990年 | 67篇 |
1989年 | 42篇 |
1988年 | 60篇 |
1987年 | 44篇 |
1986年 | 37篇 |
1985年 | 68篇 |
1984年 | 63篇 |
1983年 | 42篇 |
1982年 | 49篇 |
1981年 | 42篇 |
1980年 | 44篇 |
1979年 | 43篇 |
1978年 | 33篇 |
1977年 | 39篇 |
1976年 | 33篇 |
1974年 | 34篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
31.
32.
农村公共卫生投融资机制存在的问题及对策 总被引:1,自引:0,他引:1
宁德斌 《中国卫生质量管理》2007,14(5):63-66
当前,农村公共卫生投融资规模不能适应农村居民的卫生服务需要,投融资结构不合理,致使投融资效果不佳,不利于农村卫生事业的发展。为此,需要从四个方面改革农村公共卫生投融资机制:一是要建立健全国家财政投资保障制度,发挥财政在农村公共卫生投资中的主体作用;二是要改革运行模式,拓宽融资渠道;三是要改善投资结构,优化资源配置;四是要创新管理体制,提高农村公共卫生服务能力。 相似文献
33.
J C Henry T van Amelsvoort R G Morris M J Owen D G M Murphy K C Murphy 《Neuropsychologia》2002,40(5):471-478
Velo-cardio-facial syndrome (VCFS) is associated with deletions on the long arm of chromosome 22, mild intellectual disability, poor social interaction and a high prevalence of psychosis. However, to date there have been no studies investigating the neuropsychological functioning of adults with VCFS. We compared 19 adults with VCFS with 19 age, gender and IQ matched controls using a comprehensive neuropsychological battery. Compared to controls, adults with VCFS had significant impairments in visuoperceptual ability (Visual Object and Space Perception Battery), problem solving and planning (Tower of London) and abstract and social thinking (Comprehension WAIS-R). It is likely that haploinsufficiency (reduced gene dosage) of a neurodevelopmental gene or genes mapping to chromosome 22q11 underlies the cognitive deficits observed in individuals with VCFS. 相似文献
34.
目的:通过对患者在住院过程中的系统教育,使患者了解自己疾病的知识,提高患者对糖尿病的认知水平和自我管理能力,养成良好的健康行为和生活方式,从而提高生活质量。方法:采用集体、个体、自学等形式进行教育。结果:通过培养,患者掌握了一些基本的操作技能,明显缩短了住院日,同时激发了护士与患者学习专业知识的热情,减少或延缓了并发症的发生。结论:①健康教育是一个护患双边活动过程。②通过教育,可不断提高护士的自身修养和专业知识水平。③健康教育是糖尿病患者学习糖尿病知识,提高自我护理能力的有效途径。 相似文献
35.
Two experiments investigated the effects of haloperidol (0.1 mg/kg) on the partial reinforcement extinction effect (PREE). In experiment 1 two groups of rats were trained to run in a straight alley using six trials/day with an intertrial interval (ITI) of 5–8 min. The continuously reinforced (CRF) group received food reward on every trial. The partially reinforced (PRF) group was rewarded on a quasi-random 50% schedule. All animals were then tested in extinction. Haloperidol was administered in a 2 × 2 design, i.e., drug-no drug in acquisition and drug-no drug in extinction. In experiment 2 two groups of rats were trained to press a lever in an operant chamber using a discrete trial procedure of ten trials/day with an ITI of 60 s. The CRF group was rewarded on each trial and the PRF group was rewarded on a quasi-random 50% schedule. Haloperidol was administered for 22 days prior to the start of the PREE procedure as well as throughout acquisition and extinction. The PREE, i.e., increased resistance to extinction of PRF as compared to CRF animals, was obtained in both experiments in all drug conditions. In both experiments haloperidol increased the rate of extinction. Experiment 1 revealed that this effect was entirely dur to the administration of the drug in extinction, independently of the drug condition in acquisition. In contrast to previous results in a one trial/day procedure, the administration of haloperidol to CRF animals did not increase resistance to extinction, failing to support the notion that neuroleptics attenuate the rewarding properties of reinforcement. 相似文献
36.
H. Condé 《Experimental brain research. Experimentelle Hirnforschung. Expérimentation cérébrale》1992,88(2):233-248
Summary A comprehensive review of the literature on the anatomy, electrophysiology and pharmacology of thesubstantia nigra is presented. A diagram is developed taking into account the interneuronal interactions of neurotransmitters and receptors that control firing rates and neurotransmitter releases. The central features of the diagram are a positive dopaminergic feedforward process and a positive feedback mechanism mediated by extrasynaptic substance P diffusing from striatal terminals to dopaminergic dendrites of thezona compacta neurons. This loop can enhance the transmission of information from thestriatum through thepars reticulata output neurons. The loop is controlled at the level of zona compacta neurons by a negative feedback supported by the dendritic release of dopamine and boosted by pedunculopontine activation mediated by muscarinic receptors. The output of the loop is controlled by two negative feedforward processes, both involving GABAergic striatonigral afferents. Application of the model to pharmacological studies of diverse behaviors including seizures, turning, and conditioned behaviors reveals unforseen relationships and may offer insights into, and directions for, further analysis of the mechanisms and functions involved. 相似文献
37.
人的社会能力和适应性的影响因素研究 总被引:5,自引:0,他引:5
目的:探讨影响人的社会能力和适应性的主要因素。方法:应用世界卫生组织提供的量表进行问卷调查,并对资料进行单因素及多元逐步回归分析。结果:男性、城市环境、青壮年、非政府职员职业、较高文化程度、已婚、较好经济收入、医疗保险及较低医疗费用会对社会能力和适应性产生积极影响。结论:年龄、家庭年收入、家庭年医疗费用及文化程度是社会能力和适应性的重要影响因素。 相似文献
38.
关于加强医学生实践能力培养的研究 总被引:1,自引:1,他引:0
文章比较科学系统地提出了三种有效培养医学院校大学生实践能力的途径与方法,即以课堂教学活动为基点、以实践教学环节为中心和以课外实践活动为辅助。以期为各医学高等院校就如何加强医学生实践能力培养的问题提供有益的借鉴。 相似文献
39.
Alison Prigg 《Australian Occupational Therapy Journal》2002,49(2):100-111
Occupational therapists provide support to children with special learning needs and their families during the child's transition from early childhood to mainstream school. Little has been documented regarding the role and experiences of occupational therapists working with children, families and teachers during transition in an Australian context. Six paediatric occupational therapists from one geographical area in New South Wales were interviewed and asked to relay their role and experiences when providing a service to children with special learning needs during their transition to school. Participants described their role to include: preparing the child for school; working with school personnel; and providing parental support. Although participants described both positive and negative experiences, among the negative experiences were: limited time to provide a service; recommendations to school personnel not being followed; school personnel not being supportive; feeling uncomfortable in the classroom; and limited involvement in planning. Participants described a role which is consistent with current school-based occupational therapy practice; however, in the participants' experience, there was a gap between the ideal service and what participants were able to provide. This included limited collaboration with teachers. 相似文献
40.