全文获取类型
收费全文 | 12460篇 |
免费 | 864篇 |
国内免费 | 22篇 |
专业分类
耳鼻咽喉 | 87篇 |
儿科学 | 402篇 |
妇产科学 | 366篇 |
基础医学 | 1525篇 |
口腔科学 | 139篇 |
临床医学 | 2211篇 |
内科学 | 1959篇 |
皮肤病学 | 164篇 |
神经病学 | 1206篇 |
特种医学 | 268篇 |
外科学 | 1185篇 |
综合类 | 221篇 |
一般理论 | 24篇 |
预防医学 | 1501篇 |
眼科学 | 288篇 |
药学 | 818篇 |
2篇 | |
中国医学 | 7篇 |
肿瘤学 | 973篇 |
出版年
2023年 | 56篇 |
2022年 | 128篇 |
2021年 | 213篇 |
2020年 | 138篇 |
2019年 | 224篇 |
2018年 | 256篇 |
2017年 | 205篇 |
2016年 | 201篇 |
2015年 | 232篇 |
2014年 | 316篇 |
2013年 | 574篇 |
2012年 | 770篇 |
2011年 | 886篇 |
2010年 | 467篇 |
2009年 | 451篇 |
2008年 | 804篇 |
2007年 | 809篇 |
2006年 | 876篇 |
2005年 | 852篇 |
2004年 | 903篇 |
2003年 | 844篇 |
2002年 | 754篇 |
2001年 | 166篇 |
2000年 | 109篇 |
1999年 | 136篇 |
1998年 | 154篇 |
1997年 | 130篇 |
1996年 | 97篇 |
1995年 | 104篇 |
1994年 | 75篇 |
1993年 | 78篇 |
1992年 | 102篇 |
1991年 | 70篇 |
1990年 | 76篇 |
1989年 | 66篇 |
1988年 | 61篇 |
1987年 | 62篇 |
1986年 | 79篇 |
1985年 | 62篇 |
1984年 | 65篇 |
1983年 | 67篇 |
1982年 | 55篇 |
1981年 | 63篇 |
1980年 | 69篇 |
1979年 | 40篇 |
1978年 | 44篇 |
1977年 | 36篇 |
1976年 | 30篇 |
1975年 | 32篇 |
1973年 | 35篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
91.
Mary Ann Jarvis Suntosh R. Pillay Lynn M. Norton Nemisha Hiraman Olivia B. Baloyi 《Journal of community psychology》2023,51(1):31-50
The Covid-19 pandemic lockdown regulations caused retirement homes to temporarily ban in-person visitation potentially increasing the mental health risks of older people. An opportunity arose for a multistakeholder community collaboration to design a mental health program for older people. To evaluate the process of delivering a 12-week psychosocial program aimed at preventing loneliness, countering boredom, and providing older people in restricted settings with education about Covid-19 during the lockdown, in Durban, South Africa. A qualitative retrospective design was used. Data from two focus groups and six semistructured individual interviews conducted with stakeholders (volunteers, social workers, and residents) postproject were analyzed using reflexive thematic analysis. Stakeholders had varied experiences of the project, in terms of content, processes of engagement, and implementation, resulting in five themes. The study concluded with recommendations. A strong need exists for multistakeholder community collaborations when implementing a program where the context restricts physical access. 相似文献
92.
93.
In this study a staff planning model for a health service clinic has been developed and validated using an example case of a health service clinic. The primary purpose of this research is to develop a representative staff planning model which balances the cost and benefits of staff task flexibility through crosstraining for a healthcare facility. Additionally, legal requirements for task substitution in the healthcare industry have been considered in the model. 相似文献
94.
Using prospective data gathered from a sample of 323 college women over a 10-week academic quarter, the present study examined whether dissociation and posttraumatic symptomatology mediate or moderate sexual revictimization. Results indicated that posttraumatic symptomatology, but not dissociation, moderated the link between previous and subsequent sexual victimization. Neither posttraumatic symptomatology nor dissociation mediated revictimization. 相似文献
95.
William H. Stonehill Roger R. Dmochowski Lynn A. Patterson Claire E. Cox 《The Journal of urology》1996,155(4):1248-1250
Purpose
We evaluated risk factors for the development of bladder tumors in spinal cord injury patients.Materials and Methods
A retrospective review was done of all bladder tumors at 1 institution with matched controls for 7 years.Results
We identified 17 malignant and 2 benign tumors. Indwelling bladder catheters and a history of bladder stones were statistically significant risk factors. Four patients with negative biopsies underwent repeat biopsy due to suspicious cytology and cancer was found.Conclusions
An indwelling urinary catheter and a history of bladder stones are statistically significant risk factors. Cytology and biopsy are complementary in the evaluation of urothelial malignancy in this population. A high index of suspicion and thorough evaluation are needed in spinal cord injury patients. 相似文献96.
Charles M. Haberkern Anne M. Lynn Jeremy M. Geiduschek Mary Kay Nespeca Lawrence E. Jacobson Susan L. Bratton Maureen Pomietto 《Journal canadien d'anesthésie》1996,43(12):1203-1210
Purpose
To compare two doses of bolus epidural morphine with bolus iv morphine for postoperative pain after abdominal or genitourinary surgery in infants.Methods
Eighteen infants were randomly assigned to bolus epidural morphine (0.025 mg · kg?1 or 0.050 mg · kg?1) or bolus iv morphine (0.050–0.150 mg · kg?1). Postoperative pain was assessed and analgesia provided, using a modified infant pain scale. Monitoring included continuous ECG, pulse oximetry, impedance and nasal thermistor pneumography. The CO2 response curves and serum morphine concentrations were measured postoperatively.Results
Postoperative analgesia was provided within five minutes by all treatment methods. Epidural groups required fewer morphine doses (3.8 ± 0.8 for low dose [LE], 3.5 ± 0.8 for high dose epidural [HE] vs. 6.7 ± 1.6 for iv, P < 0.05) and less total morphine (0.11 ± 0.04 mg · kg?1 for LE, 0.16 ± 0.04 for HE vs 0.67 ± 0.34 for iv, P < 0.05) on POD1 Dose changes were necessary in all groups for satisfactory pain scores. Pruritus, apnoea, and haemoglobin desaturation occurred in all groups. CO2 response curve slopes, similar preoperatively (range 36–41 ml · min?1 · mmHg ETco 2 ?1 · kg?1) were generally depressed (range, 16–27 ml · min?1 · mmHg ETco 2 ?1 · kg?1) on POD1. Serum morphine concentrations, negligible in LE (<2 ng · ml?1), were similar in the HE and iv groups (peak 8.5 ± 12.5 and 8.6 ± 2.4 ng · ml?1, respectively).Conclusion
Epidural and iv morphine provide infants effective postoperative analgesia, although side effects are common. Epidural morphine gives satisfactory analgesia with fewer doses (less total morphine); epidural morphine 0.025 mg · kg?1 is appropriate initially. Infants receiving epidural or iv morphine analgesia postoperatively need close observation in hospital with continuous pulse oximetry. 相似文献97.
98.
W. Edwards Deming is considered a guru of quality by many international manufacturers. His ideas revolutionized Japan's auto industry in the 1950s, but did not make a substantial impact in the United States until 1980. Increasingly, service organizations, from hotels to public utility companies, are experimenting with his principles. This article explains how a 165-bed community hospital--Brazosport Memorial Hospital in Lake Jackson, Texas--is putting Deming's ideas to work in health care. Deming's philosophy and principles are described as is the hospital's application and implementation of his ideas; preliminary results are encouraging. 相似文献
99.
100.