首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   78264篇
  免费   7654篇
  国内免费   382篇
耳鼻咽喉   269篇
儿科学   2801篇
妇产科学   2035篇
基础医学   3408篇
口腔科学   1654篇
临床医学   24899篇
内科学   9421篇
皮肤病学   628篇
神经病学   3147篇
特种医学   656篇
外科学   6152篇
综合类   5645篇
一般理论   65篇
预防医学   16354篇
眼科学   291篇
药学   5367篇
  123篇
中国医学   781篇
肿瘤学   2604篇
  2024年   136篇
  2023年   2600篇
  2022年   2591篇
  2021年   4476篇
  2020年   4716篇
  2019年   4694篇
  2018年   4395篇
  2017年   3889篇
  2016年   3477篇
  2015年   3333篇
  2014年   6073篇
  2013年   6818篇
  2012年   4501篇
  2011年   4628篇
  2010年   3425篇
  2009年   3530篇
  2008年   3237篇
  2007年   3342篇
  2006年   2805篇
  2005年   2356篇
  2004年   1967篇
  2003年   1525篇
  2002年   1138篇
  2001年   1033篇
  2000年   919篇
  1999年   785篇
  1998年   646篇
  1997年   519篇
  1996年   452篇
  1995年   336篇
  1994年   305篇
  1993年   277篇
  1992年   203篇
  1991年   178篇
  1990年   160篇
  1989年   113篇
  1988年   96篇
  1987年   97篇
  1986年   71篇
  1985年   102篇
  1984年   84篇
  1983年   50篇
  1982年   46篇
  1981年   48篇
  1980年   34篇
  1979年   22篇
  1978年   13篇
  1977年   15篇
  1976年   13篇
  1975年   9篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
This paper attempts to answer the question of why social caseworkers have ongoing supervision by exploring the historical evolution of social work supervision. Supervision has withstood the many changes in the field since its beginning in the late 1800s and has been reinterpreted to fit the prevailing theories guiding practice, thus avoiding obsolescence. Supervision began as an educational device, then evolved into a practice tool, later became a therapeutic method, and then became a separate entity from therapy.  相似文献   
992.
为了进一步了解中医的发展状况,通过对2008年与2000年样本地区卫生服务供方的意向调查数据的比较,分析卫生服务供方对中医信仰的变迁。研究发现,卫生服务供方对中医信仰进一步降低,中医成为西医的简单补充。在这种情况下,如何把握中医特色,创新诊疗手段,总结推广中医特效治疗种类和范围,推广适宜技术等尤为重要,逐步提高卫生服务供方对于中医的支持和认可。  相似文献   
993.
BackgroundRecent advances in information technology (IT) coupled with the increased ubiquitous nature of information technology (IT) present unique opportunities for improving diabetes self-management. The objective of this paper is to determine, in a systematic review, how IT has been used to improve self-management for adults with Type 1 and Type 2 diabetes.MethodsThe review covers articles extracted from relevant databases using search terms related information technology and diabetes self-management published after 1970 until August 2012. Additional articles were extracted using the citation map in Web of Science. Articles representing original research describing the use of IT as an enabler for self-management tasks performed by the patient are included in the final analysis.ResultsOverall, 74% of studies showed some form of added benefit, 13% articles showed no-significant value provided by IT, and 13% of articles did not clearly define the added benefit due to IT. Information technologies used included the Internet (47%), cellular phones (32%), telemedicine (12%), and decision support techniques (9%). Limitations and research gaps identified include usability, real-time feedback, integration with provider electronic medical record (EMR), as well as analytics and decision support capabilities.ConclusionThere is a distinct need for more comprehensive interventions, in which several technologies are integrated in order to be able to manage chronic conditions such as diabetes. Such IT interventions should be theoretically founded and should rely on principles of user-centered and socio-technical design in its planning, design and implementation. Moreover, the effectiveness of self-management systems should be assessed along multiple dimensions: motivation for self-management, long-term adherence, cost, adoption, satisfaction and outcomes as a final result.  相似文献   
994.
Interest in shared decision making (SDM) has increased and become widely promoted. However, from both practical and measurement perspectives, SDM’s origin as an outgrowth of patient autonomy has resulted in narrowly conceptualizing and operationalizing decision making. The narrow focus on individual patient autonomy fails in four main ways: 1) excluding several facets of the roles, actions, and influences of decision partners in decision making; 2) focusing solely on the medical encounter; 3) ignoring the informational environment to which patients have access; and 4) treating each encounter as independent of all others. In addition to creating a research agenda that could answer important outstanding questions about how decisions are made and the consequences thereof, reconceiving SDM as centered on the person rather than the medical encounter has the potential to transform how illness is experienced by patients and families and how clinicians find meaning in their work.  相似文献   
995.
Objective: To establish the charges associated with triplet pregnancies managed at a single tertiary center, over a 5-year time period, and to evaluate the impact of prematurity on these charges.

Methods: All triplet pregnancies that reached at least 20 weeks gestation and received prenatal and neonatal care at our center from 1992 to 1996 were included. Charges for these mothers and neonates were extracted from two separate hospital billing computer systems, encompassing all inpatient, outpatient, technical, and professional charges. Linear regression was used to evaluate the relationship between gestational age at delivery and total charges.

Results: Fifty-five triplet pregnancies were included, resulting in the admission of 149 liveborn neonates. The median gestational age at delivery was 32.1 weeks. The mean charges per triplet mother were: $6,899 (professional), $3,959 (hospital outpatient), and $32,686 (hospital inpatient). The mean charges per neonatal sibling set were: $20,107 (professional) and $124,163 (hospital inpatient). The mean charges per complete triplet pregnancy was $187,814 (maternal plus neonatal). There was a significant inverse relationship between gestational age at delivery and total charges per triplet family, with a decrease of $16,584 for each additional gestational week reached (P = 0.006).

Conclusions: Triplet pregnancy charges averaged almost $190,000 each, which does not include charges associated with assisted reproductive technologies. These charges are almost all related to the expense of prolonged neonatal intensive care, and are significantly related to the gestational age at delivery. Efforts at containing these costs should focus on reducing the incidence of multiple gestation and preventing prematurity.  相似文献   
996.
Unsolved staffing pattern issues are viewed in the current context of funding pressures, third party payment, and management necessity for program and cost projections. Relevant factors are mustered for consideration with their implications. Use of differentiated skill levels and response as well as development of departmental services mandate are considered. The author also shares his experientially derived throughts on staff ratio to certain institutional assignments.  相似文献   
997.
Differences in the scalability of formal and informal in-home care to elderly are examined. A Guttman scale showed that exclusive use of informal in-home care was hierarchically scalable, but not when services were provided by any formal sources. There was some clustering of formal services, for example, a large number of those who received meals also used homemaker services. However, a large number of those who received nursing did not receive personal care. There was no overall pattern to the use of formal services. Implications of these findings as related to service planning and delivery are discussed.  相似文献   
998.
ABSTRACT

Caregiver workshops were offered to members by a group practice HMO as part of a larger demonstration of adding community care to HMO services. Of 1,200 members indicating interest at four sites, 532 participated in workshops and 320 completed pre- and post-questionnaires on effectiveness. Analyses showed improvements in caregiving preparedness and reductions in sadness and depression. Engagement in the workshops (completing 3 or more sessions) and improvements were more likely for individuals with more independent lives and social capital. Alternative helping strategies are recommended for caregivers who are less likely to engage in classes due to burden or lack of respite or transportation.  相似文献   
999.
Aim: This paper presents data on the amount of contact a large cohort of first‐time Australian grandparents have with their grandchild, and the amount of child care they provide. It compares these with grandparents' expectations and desired levels. Method: Prospective grandparents were assessed on multiple measures before the birth of their grandchild, and at 6, 12, 24 and 36 months thereafter. Results: At the 12‐month assessment, grandmothers had approximately 15 hours per week contact, and provided approximately 7.5 hours per week of child care. The corresponding figures for grandfathers were 9.5 hours and 5 hours respectively. Approximately 10% of grandparents reported no contact with their grandchild, and 30–40% reported undertaking no child care. Almost half the grandparents desired more contact than they were actually getting. Conclusion: Accurate quantification of contact and care is a prerequisite for investigation of the impact of the transition to grandparenthood on health and well‐being.  相似文献   
1000.
ABSTRACT

Background: Osteoarthritis (OA) is a major cause of pain and physical disability, and general practitioners (GPs) are usually the first point of contact for patients. Physiotherapy has been shown as effective in the management of lower-limb OA. The aim was to explore the beliefs of GPs on the physiotherapy management of lower-limb OA in primary care. Methods: This is a qualitative study evaluating GP views about physiotherapy in Sheffield, South Yorkshire, UK. Participating GPs were recruited by systematic sampling, and invitation was given to GPs in 10 practices in the four localities in Sheffield. Semistructured interviews were completed and framework analysis was used to analyze the data. Results: Eight GPs were interviewed and six themes emerged from analysis of the data: perspective on OA, management strategy, views on patients, views on physiotherapy, working collaboratively, and suggestions for service improvements. GPs had a positive impression and knowledge of physiotherapy, but lacked understanding of the processes involved in treatment and limited awareness of clinical guidelines regarding the management of OA. Improvements in communication and collaborative working were critical issues suggested by the participants. Conclusion: This study found that GPs who were interviewed had a limited understanding on the role of physiotherapists and of clinical guidelines. Interprofessional communication was not as good as it should have been. A reconfiguration of the Sheffield musculoskeletal pathway may help achieve more effective collaborative working and a better outcome for patients.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号