全文获取类型
收费全文 | 14306篇 |
免费 | 1311篇 |
国内免费 | 152篇 |
专业分类
耳鼻咽喉 | 45篇 |
儿科学 | 429篇 |
妇产科学 | 154篇 |
基础医学 | 1081篇 |
口腔科学 | 183篇 |
临床医学 | 4235篇 |
内科学 | 1618篇 |
皮肤病学 | 96篇 |
神经病学 | 1384篇 |
特种医学 | 163篇 |
外科学 | 837篇 |
综合类 | 1090篇 |
现状与发展 | 3篇 |
一般理论 | 10篇 |
预防医学 | 2799篇 |
眼科学 | 77篇 |
药学 | 1074篇 |
5篇 | |
中国医学 | 286篇 |
肿瘤学 | 200篇 |
出版年
2024年 | 40篇 |
2023年 | 380篇 |
2022年 | 569篇 |
2021年 | 762篇 |
2020年 | 668篇 |
2019年 | 690篇 |
2018年 | 693篇 |
2017年 | 612篇 |
2016年 | 648篇 |
2015年 | 588篇 |
2014年 | 1008篇 |
2013年 | 1189篇 |
2012年 | 762篇 |
2011年 | 909篇 |
2010年 | 672篇 |
2009年 | 709篇 |
2008年 | 634篇 |
2007年 | 610篇 |
2006年 | 502篇 |
2005年 | 388篇 |
2004年 | 395篇 |
2003年 | 329篇 |
2002年 | 257篇 |
2001年 | 260篇 |
2000年 | 197篇 |
1999年 | 157篇 |
1998年 | 149篇 |
1997年 | 159篇 |
1996年 | 101篇 |
1995年 | 90篇 |
1994年 | 66篇 |
1993年 | 62篇 |
1992年 | 67篇 |
1991年 | 48篇 |
1990年 | 55篇 |
1989年 | 40篇 |
1988年 | 44篇 |
1987年 | 26篇 |
1986年 | 35篇 |
1985年 | 40篇 |
1984年 | 37篇 |
1983年 | 14篇 |
1982年 | 15篇 |
1981年 | 28篇 |
1980年 | 11篇 |
1979年 | 10篇 |
1978年 | 8篇 |
1977年 | 9篇 |
1976年 | 14篇 |
1974年 | 4篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
41.
为探讨“军字1号”工程使用前后的病案首页质量变化,本文通过作者所在医院近八年病案首页的质量调查统计,对“军字1号”工程使用前后的病案首页质量作了详细的对照分析比较,为进一步加强“军字1号”工程中的病案首页质量管理提供经验。 相似文献
42.
Adherence-Facilitating Behaviors of a Multidisciplinary Pediatric Rheumatology Staff 总被引:1,自引:0,他引:1
Thompson Suzanne M.; Dahlquist Lynnda M.; Koenning Gaye M.; Bartholomew L. Kay 《Journal of pediatric psychology》1995,20(3):291-297
Investigated the behaviors of pediatric rheumatology healthcare providers that were expected to be related to patient orparent adherence. Medical charts of 108 patients ages 1 to 20years diagnosed with Juvenile Rheumatoid Arthritis were examined.The 473 outpatient visits over 15 months yielded a total of2,578 treatment recommendations, but only 1,390 adherence-facilitatingbehaviors by medical staff were documented. Providing informationabout how often to perform the recommendation was the most commonstaff behavior. In contrast, care providers rarely indicatedthat they addressed their patients' concerns and barriers toimplementing the recommendations, or employed behavior modificationstrategies to increase adherence. Implications of these findingsfor development of programs designed to increase treatment adherencein children with chronic diseases requiring time-consuming,intrusive medical regimens are discussed. 相似文献
43.
The present study was designed to investigate the relationship between intra-and inter-individual differences in arousal level and performance on both critical flicker fusion frequency and figural reversal tasks. Forty male undergraduate Ss were used. Electrical skin conductance was used as the indicant of arousal level. For the intra-individual comparisons white noise was used to increase the Ss’arousal levels. Significant inverted U-shaped relationships were found between both flicker fusion thresholds and rates of figural reversal and skin conductance between individuals. A significant curvilinear relationship was found between rates of figural reversal and level of conductance within individuals. No significant curvilinear relationship was found between flicker fusion thresholds and level of conductance within individuals. 相似文献
44.
The primary purpose of the present study was to increase our understanding of the roles of chronicity and controllability in the measurement of stress within the context of stress-illness relationships. Controllability and chronicity were assessed directly using a modified version of the Everyday Problems Scale. In addition to this scale, measures of depression, psychosomatic symptoms, and social support were administered to 128 women and 100 men. The results indicated that, for both men and women, the number of stressors was the best single predictor of symptoms. However, for women, chronicity and controllability of the stressors accounted for a significant amount of the variance in health outcomes over and above that accounted for by the number of stressors endorsed; for men, the addition of neither chronicity nor controllability consistently increased the strength of the association. While available social support was not found to influence the stress-illness relationships, greater willingness to utilize social support was associated with lower levels of depression. 相似文献
45.
W H Berrettini J I Nurnberger P Hotvedt S Simmons-Alling E S Gershon 《Journal of affective disorders》1985,8(1):55-59
In an attempt to evaluate the role of VIP in affective disorder, measurements of lymphocyte VIP receptors, and plasma and CSF VIP levels were made in unmedicated and lithium-treated euthymic bipolars and controls. Lithium decreased plasma (P = 0.01) and CSF (P = 0.05) VIP levels and increased the affinity (decreased the KD) of the VIP lymphocyte receptor (P less than 0.01). This effect may be relevant to the psychotropic action of lithium in manic-depressive illness. 相似文献
46.
Summary The purposes of this investigation were to determine the validity of critical power (CP) as a measure of the work rate that can be maintained for a very long time without fatigue and to determine whether this corresponded with the maximal lactate steady-state (lass,max). Eight highly trained endurance cyclists (maximal oxygen uptake 74.1 ml · kg–1 · min–1, SD 5.3) completed four cycle ergometer tests to exhaustion at predetermined work rates (360, 425, 480 and 520 W). From these four co-ordinates of work and time to fatigue the regression of work limit on time limit was calculated for each individual (CP). The cyclists were then asked to exercise at their CP for 30 min. If CP could not be maintained, the resistance was reduced minimally to allow the subject to complete the test and maintain a blood lactate plateau. Capillary blood was sampled at 0, 5, 10, 20 and 30 min into exercise for the analysis of lactate. Six of the eight cyclists were unable to maintain CP for 30 min without fatigue. In these subjects, the mean power attained was 6.4% below that estimated by CP. Mean blood lactates (n = 8) reached a steady-state (8.9 mmol · l–1, SD 1.6) during the last 20 min of exercise indicating that CP slightly overestimated lass, max. Individual blood lactates during the last 20 min of exercise were more closely related to the y-intercept of the CP curve (r=0.78, P<0.05) than either CP (0.34, NS) or mean power output (r=0.42, NS). The present investigation has shown that highly trained endurance cyclists can tolerate previously unreported levels of blood lactate during 30 min of exercise at or near their CP. Blood lactates during continuous exercise are higher than at the same work rate during an incremental test. The CP provides a simple and inexpensive means of assessing the exercise intensity which can be maintained continuously, while avoiding the methodological difficulties associated with ventilatory and lactate thresholds. 相似文献
47.
A Contextual Family/Systems Approach to Pediatric Psychology: Introduction to the Special Issue 总被引:2,自引:5,他引:2
Introduced the special issue on "Family System in PediatricPsychology" by organizing the papers around a series of themesrelevant to understanding families in pediatric psychology.Themes reflect the relationships between parent and child adjustment,family subsystems, legacies and traditions, social support systems,family interventions, the constancy of change in families, thechallenges of conducting longitudinal research, the inclusionof fathers, and the importance of a competency framework inpediatric family psychology. The paper concludes with recommendationsfor pediatric family psychology, including suggestions for increasingdiversity, expanding methodological approaches, and enhancingfamily competence. 相似文献
48.
Eriksen HR Hellesnes B Staff P Ursin H 《International journal of behavioral medicine》2004,11(2):122-125
Subjective health complaints without or with minimal somatic findings (pain, fatigue) are common and frequent reasons for encounter with the general practitioner and for long-term sickness leave and disability. The complaints are often attributed to the stressors of modern life. Is this true? We interviewed 120 Aborigine Mangyans (native population, M age = 33.5 years, 72.5% women) living under primitive conditions in the jungle of Mindoro, an island in the Philippines, and 101 persons living in a small coastal town on the same island (coastal population, M age = 33.8 years, 60.4% women). Both groups had more musculoskeletal complaints, fatigue, mood changes, and gastrointestinal complaints than a representative sample from the Norwegian population (N = 1,243). Our common subjective health complaints, therefore, are not specific for industrialized societies. 相似文献
49.
Both immunoglobulin E (IgE)-mediated food allergy and food intolerance can lead to many changes in personal behaviour and health care resource use which have important economic consequences. These costs will impact directly, indirectly and intangibly on both individuals and society in general. It is important to measure the cost of illness (COI) of food allergy as a first step in developing and evaluating measures to reduce and control the burden of illness. This paper outlines a framework for assessing COI of food allergy from different viewpoints. It offers a structure for identifying the different cost impacts on allergic and nonallergic consumers, food producers and society as a whole, and for scoping, measurement and valuation of relevant costs. Within this structure, the existing literature is reviewed. This review illustrates the lack of information and clear methodology for assessing costs of food allergy. The paper concludes that there is a need for a more structured research programme to generate data essential for future evaluations of procedures and technologies for the diagnosis, treatment and management of food allergy. 相似文献
50.
OBJECTIVE: To evaluate an integrated group intervention for siblings and parents designed to increase sibling understanding of and adjustment to chronic illness and developmental disability (CI/DD). METHODS: Fifty-four well siblings (ages 8-13 years) and their parents were recruited through hospital-based and community agencies serving children with CI/DD. Measures of sibling knowledge, sibling adjustment to the disorder, sibling connectedness, and sibling global behavioral functioning were collected before and after the intervention. A subsample of 20 families completed a 3-month follow-up to assess maintenance of results. RESULTS: Sibling knowledge of the child's disorder and sibling connectedness increased, while sibling reports of negative adjustment to the disorder and parent reports of sibling global behavioral functioning decreased significantly from pre- to posttreatment for both boys and girls, regardless of the type of diagnostic condition. Improvements in sibling knowledge, connectedness, and behavioral problems maintained at 3-month follow-up. Parent satisfaction with the program was high. CONCLUSIONS: Results support the future conduct of more controlled evaluation of the integrated sibling and parent group intervention model to improve sibling knowledge of and adjustment to CI/DD. 相似文献