全文获取类型
收费全文 | 368篇 |
免费 | 23篇 |
国内免费 | 2篇 |
专业分类
耳鼻咽喉 | 4篇 |
儿科学 | 21篇 |
妇产科学 | 4篇 |
基础医学 | 29篇 |
口腔科学 | 7篇 |
临床医学 | 46篇 |
内科学 | 53篇 |
皮肤病学 | 7篇 |
神经病学 | 8篇 |
特种医学 | 126篇 |
外科学 | 34篇 |
综合类 | 12篇 |
预防医学 | 17篇 |
眼科学 | 4篇 |
药学 | 14篇 |
1篇 | |
肿瘤学 | 6篇 |
出版年
2023年 | 6篇 |
2021年 | 6篇 |
2020年 | 6篇 |
2018年 | 5篇 |
2017年 | 6篇 |
2016年 | 14篇 |
2015年 | 14篇 |
2014年 | 5篇 |
2013年 | 8篇 |
2012年 | 16篇 |
2011年 | 9篇 |
2010年 | 9篇 |
2009年 | 9篇 |
2008年 | 8篇 |
2007年 | 4篇 |
2006年 | 5篇 |
2005年 | 7篇 |
2002年 | 2篇 |
1999年 | 3篇 |
1998年 | 17篇 |
1997年 | 22篇 |
1996年 | 20篇 |
1995年 | 17篇 |
1994年 | 14篇 |
1993年 | 13篇 |
1992年 | 3篇 |
1991年 | 4篇 |
1990年 | 6篇 |
1989年 | 12篇 |
1988年 | 18篇 |
1987年 | 14篇 |
1986年 | 11篇 |
1985年 | 12篇 |
1984年 | 3篇 |
1982年 | 2篇 |
1981年 | 7篇 |
1979年 | 2篇 |
1978年 | 6篇 |
1968年 | 2篇 |
1967年 | 4篇 |
1966年 | 2篇 |
1964年 | 2篇 |
1961年 | 2篇 |
1959年 | 4篇 |
1958年 | 4篇 |
1957年 | 3篇 |
1956年 | 4篇 |
1955年 | 2篇 |
1954年 | 3篇 |
1953年 | 2篇 |
排序方式: 共有393条查询结果,搜索用时 15 毫秒
81.
82.
The objective was to examine long-term changes in the growth of Aboriginal infants and young children in the Kimberley region in the far northwest of Australia from 1969 to 1993. A retrospective analysis of anthropometric data (weight and length) routinely collected on 0–5-year-old children in 5-year cohorts from 1969 to 1993 was carried out. From 1974-78 to 1989-93 there has been a significant increase in mean birthweight (ANOVA p < 0.05). The percentage of low birthweight infants (<2500g) declined from 14% in 197983 to 10% in 1989-93 ( p < 0.001). There were no consistent improvements in the growth patterns of infants from birth to 60 months. All cohorts displayed pronounced growth faltering in weightforage and heightforage from 6 to 12 months of age and fell significantly below both the NCHS reference values and mean values for healthy breastfed infants. In conclusion, reductions in Aboriginal infant mortality and infectious disease rates over the past 20 years have not been accompanied by improved growth. The persistence of child malnutrition in these communities may warrant a shift in attention from disease treatment and prevention to a better understanding of nutritional influences, particularly weaning practices, during infancy and early childhood. 相似文献
83.
84.
ANNALENA HOLST ULLA SCHRÖDER LARS EK ANNA-LENA HALLONSTEN CLAES-GÖRAN CROSSNER 《European journal of oral sciences》1988,96(5):457-465
Abstract – The aim of the present investigation was to study non-dental and dental background variables with a view to estimating their influence on behavior management problems by means of a structured interview and analyzing their separate and combined predictive power. The material consisted of a case group, 101 children aged 3–16 yr, referred for management problems to clinics of specialized pedodontics, and a control group, individually matched with the cases as regards age, sex, residential area, number of tooth surfaces restored, and dentist. The children or their parents were interviewed concerning background variables. Logistic regression was used for the analyses. Three non-dental variables turned out to be statistically significant as predictors ( P<0.05 ): problems on visiting a medical doctor, dental fear in the mother or father, and anxiety when meeting unfamiliar people. Management problems might be expected if one of these attributes is found. Four dental variables had significant predictive power: earlier problems on seeing a dentist, dislike of the dentist, not enough time to adjust to the dental situation, and fear of injection. However, none of these dental variables was found to have predictive power in 3–6-yr-olds, and none of them improved the predictive power of the three main non-dental variables. 相似文献
85.
86.
87.
88.
89.
MORGAN ANDERSSON NILS LINDQVIST CHRISTER SVENSSON LARS EK ULF PIPKORN 《Clinical otolaryngology》1993,18(1):30-33
Topical steroids are known to be effective in allergic inflammatory airway disease. However, progress in the treatment of these diseases has also called for the use of unadulterated drugs, without lubricants and preservatives. Rhinocort® Turbuhaler®, a multi-dose inhaler containing budesonide as a pure powder, is a newly developed device without any carrier gas, preservatives or lubricants. The efficacy and tolerance of this product were evaluated in 60 patients with birch pollen rhinitis. After a run-in period of 1 week the patients received once daily for 4 weeks either budesonide pure powder (400 μg) or placebo in a double-blind randomized fashion. Assessment of efficacy was made by comparing scores for different nasal and eye symptoms. The additional use of antihistamine tablets was assessed. In 22 of the patients nasal peak inspiratory flow rate was measured before and after 1 week of treatment. Budesonide was significantly more effective than placebo in controlling the nasal symptoms (P-values ranging from 0.011–0.045). The use of antihistamine tablets was significantly lower in the budesonide group (P= 0.012). The nasal inspiratory flow rate was increased after 1 week of treatment in the budesonide treated group of patients as compared with placebo (P= 0.007). No differences were observed between the groups with regard to eye symptoms or adverse effects. The results show that budesonide delivered from a dry powder inhaler is an effective and well tolerated treatment of seasonal allergic rhinitis. 相似文献
90.