全文获取类型
收费全文 | 3170篇 |
免费 | 280篇 |
国内免费 | 14篇 |
专业分类
耳鼻咽喉 | 14篇 |
儿科学 | 215篇 |
妇产科学 | 61篇 |
基础医学 | 320篇 |
口腔科学 | 89篇 |
临床医学 | 280篇 |
内科学 | 799篇 |
皮肤病学 | 40篇 |
神经病学 | 247篇 |
特种医学 | 222篇 |
外科学 | 471篇 |
综合类 | 152篇 |
预防医学 | 210篇 |
眼科学 | 48篇 |
药学 | 177篇 |
1篇 | |
中国医学 | 3篇 |
肿瘤学 | 115篇 |
出版年
2021年 | 36篇 |
2019年 | 36篇 |
2018年 | 40篇 |
2017年 | 33篇 |
2016年 | 40篇 |
2015年 | 47篇 |
2014年 | 63篇 |
2013年 | 84篇 |
2012年 | 87篇 |
2011年 | 94篇 |
2010年 | 62篇 |
2009年 | 91篇 |
2008年 | 118篇 |
2007年 | 125篇 |
2006年 | 121篇 |
2005年 | 100篇 |
2004年 | 109篇 |
2003年 | 99篇 |
2002年 | 94篇 |
2001年 | 88篇 |
2000年 | 91篇 |
1999年 | 90篇 |
1998年 | 70篇 |
1997年 | 68篇 |
1996年 | 68篇 |
1995年 | 59篇 |
1994年 | 46篇 |
1993年 | 53篇 |
1992年 | 86篇 |
1991年 | 103篇 |
1990年 | 85篇 |
1989年 | 82篇 |
1988年 | 69篇 |
1987年 | 65篇 |
1986年 | 73篇 |
1985年 | 73篇 |
1984年 | 52篇 |
1983年 | 52篇 |
1982年 | 42篇 |
1981年 | 39篇 |
1980年 | 37篇 |
1979年 | 46篇 |
1978年 | 34篇 |
1977年 | 28篇 |
1976年 | 40篇 |
1975年 | 36篇 |
1974年 | 29篇 |
1973年 | 42篇 |
1972年 | 33篇 |
1970年 | 29篇 |
排序方式: 共有3464条查询结果,搜索用时 0 毫秒
1.
R G Jones J W Bass M E Weisse J M Vincent 《The Pediatric infectious disease journal》1991,10(8):557-559
We tested the urine of 30 infants 6 weeks to 7 months of age after they received standard 10-micrograms (0.5-ml) doses of HbOC (HibTITER) Haemophilus influenzae b (Hib) conjugate vaccine for the presence of Hib antigenuria using a commercially available latex particle agglutination assay (Directigen). Urines were collected within 1 hour, from 1 to 3 hours, at 24 hours and at 3, 6 and 9 days after vaccine administration and reactions were quantitated from 0 to 3+. In contrast to previous studies in older children which showed little or no antigenuria following HbOC vaccination, our study shows that in infants intense Hib antigenuria is evident within 2 to 3 hours and persists 3 days after vaccine administration and that less intense antigenuria may be detected in some infants for several days. With efficacious vaccines now being used in 2- to 6-month-old infants, invasive Hib disease may soon be limited to infants of this age just before their seroconversion. It should be recognized that antigenuria occurs for several days after vaccination with Hib conjugate vaccines and that it could be erroneously interpreted as evidence of invasive Hib infection. 相似文献
2.
3.
Elizabeth Bass Robert R Campbell Dennis C Werner Audrey Nelson Tatjana Bulat 《Rehabilitation nursing》2004,29(6):215-220
Hip fractures among elderly people frequently result in permanent disabilities, nursing home placement, and death. The bulk of hip fracture research focuses on elderly women. Within the Veterans Health Administration (VHA), the majority of patients are men. There are no published national reports on hip fractures with large male samples, or on related inpatient mortality among veterans. This retrospective study of 13,546 veterans with hip fracture discharges from 1998-2002 found unadjusted mortality rates are higher in the VHA, compared with the general population. VHA patients tend to be older men in poor health who stay in the hospital longer Increased knowledge about the risks and outcomes associated with hip fractures in men could lead to improved primary and secondary injury-prevention programs. Rehabilitation nurses in acute care can be catalysts in proactively incorporating protective devices, screening for osteoporosis, and initiating lifestyle changes in their plans of care to optimize outcomes for hip fracture patients. 相似文献
4.
De Leo V; Morgante G; Lanzetta D; D'Antona D; Bertieri RS 《Human reproduction (Oxford, England)》1997,12(2):357-360
We report the results of administration of danazol after suspension of
gonadotrophin-releasing hormone analogue (GnRHa) therapy for uterine
myomas. A total of 21 women with uterine myomas was treated with 100 mg
danazol for 6 months after GnRHa therapy. Uterine volume and endocrine
status were monitored monthly by ultrasound and assay of plasma
gonadotrophins, oestradiol and progesterone. The results show a rebound of
uterine volume about 30% less than in controls at the end of danazol
therapy. Menstrual cyclicity returned after 65 +/- 3 days in 16 subjects
and five patients remained amenorrhoeic. Hormone assays confirmed renewed
ovarian function in the women whose menstrual periods returned. Bone
mineral content was substantially reduced during GnRHa treatment but
improved significantly during danazol therapy even in the women who
remained amenorrhoeic. These results show the utility of danazol in
prolonging the therapeutic effects of GnRHa. The mechanism by which danazol
inhibits rebound of uterine volume may be due to its antiprogesterone
effects on uterine myomas.
相似文献
5.
Andrew R. Hoellein MD Christopher A. Feddock MD Charles H. Griffith III MD MSPH John F. Wilson PhD Donald R. Barnett MD MSPH Pat F. Bass III MD MS T. Shawn Caudill MD MSPH 《Journal of general internal medicine》2004,19(5P2):562-565
Due to recent public debate and newly imposed resident work hour restrictions, we decided to investigate the relationship of resident call status to their ambulatory patients' satisfaction. Resident continuity clinic patients were asked to rate their level of satisfaction on a 10-point Likert-type scale. Using multiple regression approaches, these data were then assessed as a function of resident call status. We found that in 646 patient encounters, patient satisfaction scores were significantly less when the resident was postcall, 8.99 ± 1.8, than when not postcall, 9.31 ± 1.3. We herein discuss etiologies and implications of these findings for both patient care and medical education. 相似文献
6.
C Bass 《The Medical clinics of North America》1991,75(5):1157-1173
Complaints of chest pain and breathlessness are common in both primary care and medical outpatient settings. A subgroup of these patients who find their way into tertiary care settings and subsequently are found to have no relevant organic pathology are at risk of continuing morbidity. One possible reason for this is that diagnostic strategies often focus on establishing an organic cause of pain and ignore psychosocial factors. In this article I have attempted to describe not only the prevalence but also the clinical characteristics of patients with medically unexplained cardiorespiratory symptoms. A method of establishing a positive diagnosis of noncardiac chest pain has also been outlined. This is based on an interactive and overlapping model that takes into account not only a number of psychological and social factors but also current physical and cardiac risk factors. It is important for nonpsychiatric physicians to diagnose noncardiac pain at an earlier stage in the evolution of the disorder. This would have major beneficial effects for patients, including (1) fewer unnecessary investigations; (2) less distress and functional disability; (3) reduced cost to the hospital; and (4) fewer iatrogenic complications. 相似文献
7.
Recent evidence suggests that pigmentary dispersion syndrome is a result of the mechanical abrasion of the posterior iris surface and the anterior zonular fibers causing pigmentary release onto the ocular structures. Irreversible glaucomatous changes may be the result of the inability of the endothelial cells lining the trabecular beams to continue to phagocytize the release pigment. Glaucomatous field changes may occur despite low intraocular pressures and no clinically observable cupping. Visual field testing is indicated in any patient presenting with pigmentary dispersion syndrome since pressure spikes inducing nerve damage occur with stress, exercise, or prolonged mydriasis. Treatment may include miotics to prevent further abrasion rather than typical pressure-lowering medication. 相似文献
8.
Alcohol and the adolescent trauma population 总被引:4,自引:0,他引:4
B A Hicks J A Morris S M Bass G W Holcomb W W Neblett 《Journal of pediatric surgery》1990,25(9):944-8; discussion 948-9
Trauma is the leading killer of children and adolescents between 1 and 21 years of age. Alcohol-impaired driving represents the single greatest cause of mortality and morbidity of children over the age of 6. We retrospectively reviewed 878 consecutive adolescent (age range, 16 to 20 years) trauma admissions for blood alcohol concentration (BAC). Four hundred sixty-seven patients had BAC drawn, 258 were BAC-negative (group I), 209 (48%) were BAC-positive (group II). The adolescent drinkers were then compared with a group of 748 adult drinkers (group III). Groups I and II differ in sex, age, time of day of the accident, Injury Severity Score, Glasgow Coma Score, and Revised Trauma Score, whereas group II and III differ by type of accident, type of injury, socioeconomic factors (bad debt), time of day of the injury, and BAC. There were no significant differences in TRISS predicted survival, actual survival, nor mean length of stay. We conclude that (1) alcohol is a significant contributor to injury during adolescence, and (2) adolescent drinkers differ from adult drinkers in their habits, demographics, and socioeconomic status. These socioeconomic differences have implications for the access to and cost-effectiveness of interventions. 相似文献
9.
10.
The details are reviewed of 50 children who were treated over a 10-year period with clinical signs of fractured base of skull. Two patients died early without signs of sepsis-due to the severity of their head injuries. Of the remainder, 23 received antibiotic prophylaxis and 25 did not. One patient from each of these groups developed pneumococcal meningitis, and they were successfully treated. Our results correlate well with those previously published, confirming the low incidence of infective complications with or without prophylaxis. The need to assemble a large enough series to make statistically significant conclusions regarding this infrequent condition is highlighted throughout the literature, which is reviewed here. 相似文献