首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   556篇
  免费   56篇
耳鼻咽喉   2篇
儿科学   13篇
妇产科学   74篇
基础医学   57篇
口腔科学   39篇
临床医学   175篇
内科学   49篇
皮肤病学   12篇
神经病学   29篇
特种医学   6篇
外科学   39篇
预防医学   34篇
药学   16篇
肿瘤学   67篇
  2023年   5篇
  2021年   2篇
  2020年   4篇
  2019年   4篇
  2018年   12篇
  2017年   10篇
  2016年   18篇
  2015年   18篇
  2014年   12篇
  2013年   24篇
  2012年   37篇
  2011年   47篇
  2010年   43篇
  2009年   22篇
  2008年   37篇
  2007年   38篇
  2006年   27篇
  2005年   24篇
  2004年   26篇
  2003年   34篇
  2002年   17篇
  2001年   11篇
  2000年   4篇
  1999年   3篇
  1998年   8篇
  1997年   6篇
  1996年   4篇
  1995年   12篇
  1994年   7篇
  1993年   5篇
  1992年   8篇
  1990年   6篇
  1989年   6篇
  1987年   4篇
  1986年   4篇
  1984年   2篇
  1983年   3篇
  1982年   6篇
  1981年   8篇
  1980年   3篇
  1978年   5篇
  1976年   7篇
  1975年   3篇
  1974年   2篇
  1973年   3篇
  1972年   4篇
  1971年   3篇
  1970年   3篇
  1969年   3篇
  1967年   2篇
排序方式: 共有612条查询结果,搜索用时 15 毫秒
1.
Abstract The aim of the present investigation was to study the frequency of pulp revascularization in therapeutically reimplanted incisors as well; is its relationship with the following factors: width of apical foramen, duration of extra-alveolar lime, storage conditions and postoperative administration of antibiotics. Out of 72 immature teeth (width of apical foramen 1.1–5.0 mm) the pulp was revascularized in 13 (18%), while in 88 mature teeth (width of apical foramen 1.0 mm or less) no revascularization occurred. Among parameters tested statistically in immature teeth, a significantly increased frequency of revascularization (p < 0.05) was only found in teeth reimplanted within 45 minutes after avulsion, when compared with teeth reimplanted after a longer extra-alveolar time, and in mandibular incisors when compared with maxillary incisors (p < 0.01). All teeth in which revascularization did not occur exhibited a periapical radiolucency and/or external inflammatory root resorption.  相似文献   
2.
OBJECTIVE: The Baking Tray Task is a comprehensible, simple-to-perform test for use in assessing unilateral neglect. The aim of this study was to validate further its use with stroke patients. METHODS: The Baking Tray Task was compared with 2 versions of the Behaviour Inattention Test and a test for personal neglect. A total of 270 patients were subjected to a 3-item version of the Behaviour Inattention Test and 40 patients were subjected to an 8-item version of the Behaviour Inattention Test, besides the Baking Tray Task and the personal neglect test. RESULTS: The Baking Tray Task was more sensitive than the 3-item Behaviour Inattention Test, but the 8-item Behaviour Inattention Test was more sensitive than the Baking Tray Task. The best combination of any 3 tests was Baking Tray Task, Reading an article, and Figure copying; the 2 last-mentioned being a part of the 8-item Behaviour Inattention Test. CONCLUSION: Multi-item tests detect more cases of neglect than do single tests. However, it is tiresome for the patient to undergo a larger test battery than necessary. It is also time-consuming for the staff. Behavioural tests seem more appropriate when assessing neglect. The Baking Tray Task seems to be one of the most sensitive single tests, but its sensitivity can be further enhanced when it is used in combination with other tests.  相似文献   
3.
Abstract: Background : To be hit by one's intimate partner during the first year after childbirth may affect a woman's health and ability to take care of her newborn. The purpose of this study was to document the prevalence and indicators in early pregnancy of a woman being hit by her partner during the year after childbirth. Method : Information was collected by a postal questionnaire in early pregnancy and 12 months after childbirth from the approximately 5,550 women in Sweden who visited an antenatal care clinic for the first time during one of three chosen weeks in 1999 and 2000. Results : Of the 3,266 recruited women, 2,563 returned the follow‐up questionnaire. Being hit during the first year after childbirth was reported by 52 of the 2,563 (2%) women: 32 (61%) had been hit by their partner once, 12 (23%) twice, and 8 (15%) three or more times. Risk increased in women who were age 24 years or younger (3.9% had been hit), unmarried (7.1%), born in countries outside Europe (6.8%), with a partner born outside Europe (5.4%), had a low level of education (8.9%), and were unemployed (5.0%). In early pregnancy, women with back pain (4.0%), a chronic illness (4.1%), coital pain (6.1%), frequent depression‐related symptoms (8.1%), stomach pain (3.8%), or a urinary tract problem (6.3%) were hit more often than others after childbirth. Conclusions : At least 2 percent of Swedish women giving birth in 2000 were hit by their partner during the year after childbirth. Using identified predictors during antenatal care may increase the likelihood of finding women at risk, thereby enhancing the possibility of interventions to prevent this crime and health hazard.  相似文献   
4.
Many Swedish infants carry Staphylococcus aureus in their intestinal microflora. The source of this colonization was investigated in 50 families. Infantile S. aureus strains were isolated from rectal swabs and stool samples at 3 days and at 1, 2, 4, and 8 weeks of age. The strains were identified by using the random amplified polymorphic DNA method and compared to strains from swab cultures of the mothers' hands, nipples, and nares and from the fathers' hands and nares. Maternal stool samples were also obtained at a later stage to compare infant and adult intestinal S. aureus colonization. Although 60% of 1-month-old children had S. aureus in the stools, this was true of only 24% of the mothers. The median population numbers in colonized individuals also differed: 10(6.8) CFU/g of feces among infants at 2 weeks of age versus 10(3.2) CFU/g of feces in the mothers. Of S. aureus strains in the stools of 3-day-old infants, 90% were identical to a parental skin strain. A total of 96% of infants whose parents were S. aureus skin carriers had S. aureus in their feces and 91% had the same strain as at least one of the parents. In comparison, only 37% of infants to S. aureus-negative parents had S. aureus in the stool samples. Thus, infantile intestinal S. aureus colonization was strongly associated with parental skin S. aureus carriage (P = 0.0001). These results suggest that S. aureus on parental skin establish readily in the infantile gut, perhaps due to poor competition from other gut bacteria.  相似文献   
5.
6.
7.
ObjectiveAn instrumental vaginal birth is known to affect women’s birth experience, few studies have explored the fathers’ experiences of attending such a birth. The aim of this study is to compare birth outcome and parents’ feelings in parents with instrumental vaginal birth or a spontaneous vaginal birth.MethodsA regional survey was conducted of 936 mothers and 827 fathers recruited in mid-pregnancy and followed up 2 months after birth. Data was collected by questionnaires. Crude and adjusted odds ratios with a 95% confidence interval were used in the analysis.ResultsThe prevalence for instrumental vaginal birth was 9%. Prolonged labour (OR 8.3; 95% CI 5.0–13.9), augmentation with synthetic oxytocin (OR 5.1; 2.9–8.9), and birth complications (OR 2.5; 1.5–2.6) were more common in the instrumental vaginal group. An instrumental vaginal birth was associated with a negative birth experience for mothers (OR 3.2; 1.3–8.1) and fathers (OR 5.2; 1.2–21.5). Mothers who had an instrumental vaginal birth were more likely to report feelings that the baby would be damaged during birth (OR 3.0; 1.7–5.5) and that the birth experience made them decide not to have any more children (OR 3.4; 1.1–10.7). Fathers reported a near-panic feeling when attending an instrumental vaginal birth (OR 5.2; 1.7–15.5).ConclusionAn instrumental vaginal birth was correlated with longer and more complicated births, epidurals and oxytocin augmentation. It affected the birth outcome and parents’ feelings and was associated with future reproductive thoughts and a negative birth experience.  相似文献   
8.
The early postnatal period can be challenging for new fathers especially when their partner has experienced a caesarean section. The aim of this study was to describe men’s perceptions and feelings of staying with their partner and new baby in the context of having experienced a surgical birth. Thematic analysis was employed to analyse telephone interviews collected from 21 Swedish fathers who had experienced elective or emergency caesarean section. Being involved, receiving support and providing support were main reasons men considered it important they be facilitated to stay with their partners. Postnatal care should be oriented towards the whole family.  相似文献   
9.
10.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号