全文获取类型
收费全文 | 37828篇 |
免费 | 8617篇 |
国内免费 | 385篇 |
专业分类
耳鼻咽喉 | 1177篇 |
儿科学 | 1098篇 |
妇产科学 | 1139篇 |
基础医学 | 1508篇 |
口腔科学 | 1498篇 |
临床医学 | 7335篇 |
内科学 | 10326篇 |
皮肤病学 | 990篇 |
神经病学 | 2824篇 |
特种医学 | 1071篇 |
外科学 | 6353篇 |
综合类 | 200篇 |
现状与发展 | 4篇 |
一般理论 | 9篇 |
预防医学 | 5429篇 |
眼科学 | 794篇 |
药学 | 994篇 |
中国医学 | 6篇 |
肿瘤学 | 4075篇 |
出版年
2024年 | 240篇 |
2023年 | 1553篇 |
2022年 | 525篇 |
2021年 | 1014篇 |
2020年 | 1917篇 |
2019年 | 726篇 |
2018年 | 1891篇 |
2017年 | 1946篇 |
2016年 | 2297篇 |
2015年 | 2192篇 |
2014年 | 3087篇 |
2013年 | 3629篇 |
2012年 | 1501篇 |
2011年 | 1408篇 |
2010年 | 2131篇 |
2009年 | 2789篇 |
2008年 | 1468篇 |
2007年 | 1189篇 |
2006年 | 1564篇 |
2005年 | 1075篇 |
2004年 | 952篇 |
2003年 | 803篇 |
2002年 | 774篇 |
2001年 | 597篇 |
2000年 | 473篇 |
1999年 | 642篇 |
1998年 | 782篇 |
1997年 | 726篇 |
1996年 | 792篇 |
1995年 | 689篇 |
1994年 | 508篇 |
1993年 | 365篇 |
1992年 | 392篇 |
1991年 | 349篇 |
1990年 | 278篇 |
1989年 | 352篇 |
1988年 | 298篇 |
1987年 | 242篇 |
1986年 | 243篇 |
1985年 | 230篇 |
1984年 | 214篇 |
1983年 | 204篇 |
1982年 | 178篇 |
1981年 | 124篇 |
1980年 | 148篇 |
1979年 | 115篇 |
1978年 | 123篇 |
1977年 | 113篇 |
1976年 | 99篇 |
1975年 | 100篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
21.
22.
As the proportion of racial, ethnic, and cultural minorities in the United States continues to expand, pediatric emergency medicine providers are increasingly likely to encounter cultural and language barriers in practice. This paper reviews a conceptual framework encompassing the decision to seek emergency care, the process of providing such care, and the adherence to treatment plans and follow-up. The ways in which cultural and language barriers can negatively impact each element of this model are discussed in detail. Specific examples include provider ignorance of dangerous folk beliefs, communication barriers secondary to inappropriate interpreter use, and discriminatory assumptions regarding child abuse, pain management, and sexual activity. The practitioner is then provided with concrete recommendations to reduce these negative effects. 相似文献
23.
24.
25.
26.
GILBERTE A. VANSINTEJAN RN MPH EDD PETER J. PURDY MPH 《Journal of obstetric, gynecologic, and neonatal nursing : JOGNN / NAACOG》1986,15(6):492-495
Since the mid-1970s, the Margaret Sanger Center of Planned Parenthood of New York City has prepared nurses and nurse midwives from less developed countries to be family-planning nurse practitioners. These nurse practitioners then provide services to patients, train other staff, and manage integrated family-planning clinics. More than 120 nurses and nurse midwives have arrived in groups of 10 at the Sanger Center, with 72 attending since 1981. Each course lasts 10 weeks. The core curriculum provides trainees with skills in women's health care including contraception, in training and advocacy, and in management of clinics. Whether, in the current period of scarce resources, cross-cultural training programs of this type remain a worthwhile investment, and if so, which of their components are most important to this success, is assessed. 相似文献
27.
Philip J. Langlais PhD Mark L. Wardlow BS Hitoshi Yamamoto MD 《Pediatric neurology》1991,7(6):440-445
Cerebrospinal fluid (CSF) from 7 patients with infantile spasms (mean age: 6.7 months) was collected before and after treatment with adrenocorticotropic hormone (ACTH). The concentration of neurotransmitter metabolites was analyzed using high-performance liquid chromatography and compared to the metabolite concentration in the CSF from 7 age-matched controls (mean age: 6.1 months). Pretreatment levels of CSF 5-hydroxyindoleacetic acid (5-HIAA), homovanillic acid, 3-methoxy-4-hydroxyphenyl glycol (MHPG), and kynurenine were significantly lower in infantile spasm patients compared to controls. Following treatment, marked increases in 5-HIAA and decreases in kynurenine levels were observed in the CSF of the 5 infants whose seizures were eliminated or reduced by ACTH. In the 2 nonresponders 5-HIAA levels decreased. The level of MHPG was reduced slightly in 5 infants, including the 2 nonresponders, and was increased in 2 responders. CSF homovanillic acid levels increased in 4 infantile spasm infants and decreased in 3 following ACTH. These data demonstrate that the presence of seizures in infantile spasms is associated with a significant decrease in serotonergic activity and that elimination of seizures by ACTH is accompanied by increased serotonin turnover. The simultaneous increase of 5-HIAA and decrease of kynurenine, an alternate metabolite of tryptophan, suggests an underlying disturbance of tryptophan metabolism in infantile spasms. The possibility that elimination of seizures by ACTH may be related to decreased production of certain kynurenine metabolites, particularly quinolinic acid, is discussed. 相似文献
28.
LESLEY BOULTON MB CHB FRACO DO Ophthalmologist 《Clinical & experimental ophthalmology》1986,14(4):365-371
The Low Vision Clinic at the Palmerston North Hospital has now been oerating for 70 years. Over the course of these ten years a number of factors have emerged which can be as readily applied to general ophthalmological practice as to low vision practice. The philosophy of low vision care is one of which all ophthalmologists should be aware and includes factors to be taken into account when dealing with children, people in the workplace, and everyday factors involved in daily living activities, all of which are equally relevant in routine ophthalmological practice. This paper endeavours to share some thoughts on these factors and also discusses means by which the visually handicapped can be helped in areas where specialist low vision services are not readily available. 相似文献
29.
Joan Junkin Janice M Beitz 《Journal of wound, ostomy, and continence nursing》2005,32(2):121-8; quiz 129-30
Pelvic surgery for bladder, colon, prostate, and gynecologic cancers or disease amelioration can affect sexual health and functioning for the long-term or short-term. A person with a permanent diversion is likely to experience longer term adjustment challenges and may suffer from serious sexual dysfunction. Wound, ostomy, and continence nurses caring for the whole person must consider this in their overall care plan. Being prepared with specific information and practical interventions can assist in this endeavor. This article targets sexuality issues for a person with an ostomy and provides suggestions for comprehensive nursing interventions. 相似文献
30.