全文获取类型
收费全文 | 1249篇 |
免费 | 90篇 |
国内免费 | 28篇 |
专业分类
耳鼻咽喉 | 5篇 |
儿科学 | 94篇 |
妇产科学 | 40篇 |
基础医学 | 119篇 |
口腔科学 | 50篇 |
临床医学 | 162篇 |
内科学 | 224篇 |
皮肤病学 | 15篇 |
神经病学 | 42篇 |
特种医学 | 273篇 |
外科学 | 88篇 |
综合类 | 30篇 |
预防医学 | 92篇 |
眼科学 | 18篇 |
药学 | 65篇 |
中国医学 | 1篇 |
肿瘤学 | 49篇 |
出版年
2023年 | 2篇 |
2022年 | 4篇 |
2021年 | 8篇 |
2020年 | 7篇 |
2019年 | 10篇 |
2018年 | 18篇 |
2017年 | 10篇 |
2016年 | 17篇 |
2015年 | 22篇 |
2014年 | 36篇 |
2013年 | 27篇 |
2012年 | 27篇 |
2011年 | 31篇 |
2010年 | 40篇 |
2009年 | 28篇 |
2008年 | 26篇 |
2007年 | 57篇 |
2006年 | 41篇 |
2005年 | 23篇 |
2004年 | 30篇 |
2003年 | 37篇 |
2002年 | 25篇 |
2001年 | 28篇 |
2000年 | 32篇 |
1999年 | 25篇 |
1998年 | 69篇 |
1997年 | 75篇 |
1996年 | 82篇 |
1995年 | 49篇 |
1994年 | 41篇 |
1993年 | 43篇 |
1992年 | 29篇 |
1991年 | 22篇 |
1990年 | 23篇 |
1989年 | 44篇 |
1988年 | 47篇 |
1987年 | 33篇 |
1986年 | 37篇 |
1985年 | 37篇 |
1984年 | 11篇 |
1983年 | 16篇 |
1982年 | 14篇 |
1981年 | 15篇 |
1980年 | 12篇 |
1979年 | 4篇 |
1978年 | 9篇 |
1977年 | 15篇 |
1976年 | 10篇 |
1975年 | 9篇 |
1973年 | 4篇 |
排序方式: 共有1367条查询结果,搜索用时 15 毫秒
81.
82.
83.
Cherene Ockerby BA Patricia Livingston PhD Bev O’Connell PhD Cadeyrn J. Gaskin BBS MBS PhD 《Scandinavian journal of caring sciences》2013,27(1):147-155
Scand J Caring Sci; 2013; 27; 147–155 The role of informal caregivers during cancer patients’ recovery from chemotherapy Aims: (i) To investigate the availability, perceived importance and roles of informal caregivers in the recovery of patients treated at day oncology centres and (ii) identify differences between patients with and without informal caregivers in the extent to which they experienced symptoms, and the level of bother symptoms caused. Method: Patients from three Australian hospitals (n = 122) were recruited during cycles 1 or 2 of adjuvant chemotherapy. Participants completed a modified version of the Rotterdam Symptom Checklist (RSCL) each day for 5 days after chemotherapy. A telephone interview conducted 10 days post‐treatment explored the availability, importance and roles of caregivers. During the interview, participants also completed the modified RSCL in which they were asked about the extent to which they experienced, and were bothered by, each symptom over the prior 5 days combined. Results: Overall, 71% of participants had an informal caregiver in the 5 days postchemotherapy, commonly a partner. More women (71%) than men (48%) had a caregiver (p < 0.05). Caregivers were perceived to be highly important; they were more important for women than men (U = 213.50, p < 0.01). The most common assistance caregivers provided was meal preparation and emotional support and companionship. On days 6–10 postchemotherapy, the extent to which overall physical symptoms were experienced was higher for patients with a caregiver than without (U = 987.50, p < 0.05); similarly their symptoms caused more bother (U = 966.00, p < 0.01). Conclusions: These findings highlighted the importance of informal caregivers to patients postchemotherapy. It is imperative that patients are informed of the importance of this support so a caregiver can be arranged, if possible. Understanding the needs of patients following chemotherapy would enable health professionals to advise patients, with or without caregivers, how to best prepare for and manage their recovery at home. 相似文献
84.
85.
R Bahl DJ Murphy B Strachan 《BJOG : an international journal of obstetrics and gynaecology》2009,116(2):319-326
Objectives The objectives of this study were to define the components of a skilled low-cavity non-rotational vacuum delivery (occiput anterior, vertex at station +2 or below and less than 45-degree rotation from midline) and to facilitate the transfer of skills from expert to trainee obstetricians.
Design Qualitative study using interviews and video recordings.
Setting Two university teaching hospitals (St Michael's Hospital, Bristol, and Ninewell's Hospital, Dundee).
Participants Ten obstetricians and eight midwives identified as experts in conducting or supporting operative vaginal deliveries.
Methods Semi-structured interviews were carried out using routine clinical scenarios. The experts were also video recorded conducting low-cavity vacuum deliveries in a simulation setting. The interviews and video recordings were transcribed verbatim and analysed using thematic coding. The anonymised data were independently coded by three researchers and compared for consistency of interpretation. The experts reviewed the coded interviews and video data for respondent validation and clarification. The themes that emerged following the final coding were used to formulate a list of skills.
Main outcome measures Key technical skills of a low-cavity non-rotational delivery.
Results The final list included detailed technical skills required for conducting a low-cavity vacuum delivery. The combination of semi-structured interviews and simulation videos allowed the formulation of a comprehensive skills tool for future evaluation.
Conclusion This explicitly defined skills list could aid trainees understanding of the technique of low-cavity vacuum delivery. This is an important first step in evaluating clinical competence in intrapartum procedures. 相似文献
Design Qualitative study using interviews and video recordings.
Setting Two university teaching hospitals (St Michael's Hospital, Bristol, and Ninewell's Hospital, Dundee).
Participants Ten obstetricians and eight midwives identified as experts in conducting or supporting operative vaginal deliveries.
Methods Semi-structured interviews were carried out using routine clinical scenarios. The experts were also video recorded conducting low-cavity vacuum deliveries in a simulation setting. The interviews and video recordings were transcribed verbatim and analysed using thematic coding. The anonymised data were independently coded by three researchers and compared for consistency of interpretation. The experts reviewed the coded interviews and video data for respondent validation and clarification. The themes that emerged following the final coding were used to formulate a list of skills.
Main outcome measures Key technical skills of a low-cavity non-rotational delivery.
Results The final list included detailed technical skills required for conducting a low-cavity vacuum delivery. The combination of semi-structured interviews and simulation videos allowed the formulation of a comprehensive skills tool for future evaluation.
Conclusion This explicitly defined skills list could aid trainees understanding of the technique of low-cavity vacuum delivery. This is an important first step in evaluating clinical competence in intrapartum procedures. 相似文献
86.
87.
在一项随机、平行分组的开放试验中,27例妊娠糖尿病妇女(年龄30.7±6.3岁,HbA1c〈7%)随机分为门冬胰岛素治疗组(餐前5分钟注射)和常规人胰岛素治疗组(餐前30分钟注射)。试验时间为从诊断妊娠糖尿病(18~28周)至产后6周。研究期间两组的总体血糖水平均控制良好(试验开始和结束时HbA1c≤6%)。进餐试验时,试验6周时的平均血糖水平(门冬胰岛素组4.2±0.57mmol/L,常规人胰岛素组4.8±0.86mmol/L)略低于试验0周时(门冬胰岛素组4.9±0.59mmol/L,常规人胰岛素组5.1±0.36mmol/L)。 相似文献
88.
89.
A 3-year- 8-month-old girl developed obstructive jaundice associated with stricture of the distal end of the common bile duct 7 months after blunt abdominal trauma. Ultrasonography, computerised tomography, and percutaneous trans-hepatic cholangiography made the anatomical diagnosis before surgical reconstruction. Histological examination of the retroperitoneal tissue near the site of the stricture showed evidence of previous bile leakage due to rupture of the duct. Relief of obstruction was achieved by a Roux-en-Y choledochojejunostomy with complete resolution of symptoms and restoration of normal liver function.
Offprint requests to: H. C. O Martin 相似文献
90.
WPF Fetter J van Hof-van Duin W Baerts DJ Heersema M Wildervanck de Blécourt-Devilée 《Acta paediatrica (Oslo, Norway : 1992)》1992,81(1):25-28
Visual development was studied in 10 very-low-birth-weight infants (less than 1500 g) with retinopathy of prematurity (ROP) stage 3+ who had been treated with cryocoagulation in both eyes. Binocular visual acuity (acuity cards method) and binocular visual fields (kinetic perimetry) were assessed repeatedly in the first year of life. At 12 months corrected age, visual acuity was normal in seven and impaired in three infants, who appeared to be severely myopic. Normal visual fields were found in eight infants at this age. The results indicate that cryotherapy in cases of ROP stage 3+ does not interfere with visual acuity development. The effect on visual field development needs further investigation. 相似文献