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   1131篇
  免费   189篇
耳鼻咽喉   4篇
儿科学   46篇
妇产科学   41篇
基础医学   99篇
口腔科学   55篇
临床医学   219篇
内科学   133篇
皮肤病学   9篇
神经病学   47篇
特种医学   18篇
外科学   206篇
综合类   9篇
一般理论   2篇
预防医学   174篇
眼科学   26篇
药学   43篇
中国医学   6篇
肿瘤学   183篇
  2024年   4篇
  2023年   12篇
  2022年   14篇
  2021年   20篇
  2020年   28篇
  2019年   219篇
  2018年   123篇
  2017年   124篇
  2016年   30篇
  2015年   49篇
  2014年   90篇
  2013年   128篇
  2012年   49篇
  2011年   50篇
  2010年   42篇
  2009年   52篇
  2008年   37篇
  2007年   42篇
  2006年   37篇
  2005年   28篇
  2004年   23篇
  2003年   27篇
  2002年   13篇
  2001年   7篇
  2000年   7篇
  1999年   10篇
  1998年   8篇
  1997年   7篇
  1996年   3篇
  1995年   5篇
  1994年   3篇
  1993年   4篇
  1992年   1篇
  1991年   3篇
  1988年   1篇
  1985年   2篇
  1984年   1篇
  1983年   1篇
  1982年   2篇
  1980年   1篇
  1979年   2篇
  1977年   3篇
  1976年   3篇
  1975年   2篇
  1974年   2篇
  1973年   1篇
排序方式: 共有1320条查询结果,搜索用时 15 毫秒
51.

Background

Crimean-Congo hemorrhagic fever (CCHF) is an endemic disease in Turkey. The clinical presentation and laboratory findings are not specific especially in cases without hemorrhagic findings.

Objective

We aimed to evaluate CCHF cases and compare them with non-CCHF cases in terms of their characteristics during admission.

Methods

Cases with a preliminary diagnosis of CCHF at a secondary care hospital in Kastamonu in 2013 were evaluated, retrospectively. Cases testing RNA/IgM positive were considered as CCHF. Cases testing both RNA and IgM negative were considered as non-CCHF. The two groups were then compared in terms of their clinical, laboratory and epidemiological characteristics during admission.

Results

A total of 41 cases were tested and CCHF was found in 46.3% of cases. Fatality was 5.3% in CCHF cases. The frequency of tick bites and CK elevation in CCHF cases was significantly higher than non-CCHF cases (p<0.05). There were no significant differences between the two groups regarding other characteristics (p>0.05).

Conclusions

In cases with a preliminary diagnosis of CCHF, especially in cases without a history of tick bite and with normal CK levels during admission, performing tests for the differential diagnosis may be advisable without waiting for the results of tests for CCHF.  相似文献   
52.
53.
54.
Objectives: Tobacco use is an important public health problem that affects adversely the quality of life. A person’s attitude toward quitting tobacco use can be reflected by the desire or intention to quit smoking. The aim of this study was to determine risk factors affecting women’s intention to quit tobacco in Turkey. Methods: In this study, the data obtained from the Global Adult Tobacco Survey (GATS) were used. The GATS is a standard method used in countries to monitor and evaluate the frequency of tobacco use in adults and tobacco control practices. The data used in the study was obtained from the GATS carried out in Turkey in 2008 and 2012. The data related to 1248 women smoking tobacco were used in the analysis. The relationship between women’s intention to quit tobacco use and socio-demographic and economic variables was examined. Results: Men were excluded from the analysis because the focus of the study was women. It was determined that 732 of 1248 women using tobacco intend to quit smoking tobacco. 40.4% of women smoking tobacco are primary school graduates. Women, who were aware of anti-smoking messages and exposed to stimulants that promote smoking, were 36.4% and 27% more likely to intend to stop tobacco use after the next month, respectively. It was observed that women living in a house, where smoking is allowed, are less likely to quit smoking than others (ME = -0.522). This shows the importance of domestic restrictions. Conclusion: Intending to quit is an important preliminary step to quit. Understanding the factors associated with the intention to quit smoking can help tobacco users to stop using it and shape effective policies to increase the quit rates.  相似文献   
55.
It is not always possible to achieve a successful induction. Bishop scoring system is an efficient method used in determining whether the induction will be effective or not. The aim of this study was to train midwives on the benefits and use of the Bishop scoring system and to minimize the unnecessary use of induction. This study was conducted as pretest–posttest quasi‐experimental design. This study was conducted in a maternity hospital in Erzurum between 01 February and 31 July 2012. In the study, the midwives received training on the use of the Bishop scoring system, and changes in their knowledge levels and application during practice of induction were then evaluated. While only 20% of midwives were using the Bishop score before the training, 56.7% started to use this tool after the training. Comparing the examinations performed on pregnant women by the midwives in the pre‐induction period before and after the training, the mean of the Bishop score changed from 7.26 to 9.68 after the training. It was determined that the training could increase the knowledge levels of midwives regarding the Bishop scoring system and their attention paid to the Bishop scoring system in the practice of induction.  相似文献   
56.
57.
ObjectiveThe aim of this prospective study was to evaluate pre- and post-treatment MRI and CT findings of osteoid osteoma (OO) patients treated with radiofrequency thermo-ablation (RFTA) and to compare these findings with visual analog scale (VAS) scores.MethodsSixteen patients (4 females and 12 males; mean age of 18.87 ± 8.75 years (range: 8–37)) with OO were examined with CT and MRI, at baseline and at an average of 3 months following the procedure. On pre- and post-procedural CT and MRIs, OO-related findings were recorded. Treatment success was evaluated with VAS scores.ResultsBaseline VAS scores were 8 or 9 and follow-up scores were 0 or 1, indicating no early recurrences.Nidus diameters decreased significantly after the procedure (p = 0.027, p = 0.002, and p = 0.002; and p = 0.001, p = 0.001, p = 0.001 for AP, ML and CC nidus diameters for CT and MRI, respectively).The mean nidus volume were significantly decreased after the procedure (p = 0.001, for CT and MRI).On post-procedural images, cortical thickening, the signal intensity and contrast enhancement of the nidus and the extent of periostitis were significantly decreased (p = 0.019, p = 0.001, p = 0.001 and p = 0.034, respectively). There was no significant change in nidus calcification, perinidal cortical and intramedullary sclerosis, periosteal reaction, bone deformity, bone marrow and soft tissue edema, joint effusion and synovitis after the procedure (p = 0.253, p = 0.062, p = 0.245, p = 1, p = 1, p = 0.429, p = 0.371, p = 0.625, p = 1).ConclusionAlthough the changes in imaging findings may be helpful in early follow-up of OO patients treated with RFTA, these changes alone cannot be used with accuracy in predicting treatment response.Level of EvidenceLevel IV, Therapeutic Study.  相似文献   
58.
Aim: The aim of this study was to determine the prevalence of childhood psychopathologies in Turkey.

Method: A nation-wide, randomly selected, representative population of 5830 children (6–13 years-old) enrolled as a 2nd,3rd or 4th grade student in 30 cities were evaluated for presence of a psychiatric or mental disorder by a Sociodemographic Form, Kiddie Schedule for Affective Disorders and Schizophrenia for School Age Children-Present and Lifetime Version (K-SADS-PL), and DSM-IV-Based Screening Scale for Disruptive Behavior Disorders in Children and Adolescents scales. Impairment criterion was assessed via a 3 point-Likert scale by the parent and the teacher independently.

Results: Overall prevalence of any psychopathology was 37.6% without impairment criterion, and 17.1% with impairment criterion. Attention-deficit hyperactivity disorder was the most frequent diagnosis, followed by anxiety (19.5% and 16.7% without impairment, 12.4% and 5.3% with impairment, respectively). Lower education level and presence of a physical or psychiatric problem of the parents were independent predictors of any psychopathology of the offspring.

Conclusion: This is the largest and most comprehensive epidemiological study to determine the prevalence of psychopathologies in children and adolescents in Turkey. Our results partly higher than, and partly comparable to previous national and international studies. It also contributes to the literature by determining the independent predictors of psychopathologies in this age group.  相似文献   

59.
Aims and objectives. To examine the validity and effectiveness of a symptomatic approach based on symptoms, administered by a nurse working in women’s health area, in identifying vaginal infections in women with or without vaginal discharge. Design. Survey. Methods. Between November 2005–August 2006, 300 married women were included. A questionnaire and vaginal discharge assessment form were used for data collection. The modified algorithm of a symptomatic approach without speculum examination was used to manage participants. Three diagnoses were made for each participant. The first diagnosis was made by the research nurse using the vaginal discharge assessment form; the second diagnosis is the clinical diagnosis which was made after the gynaecological examination by a physician; and the third diagnosis is the microscopic diagnosis made by the physician when assessing the collected specimens. Results. In the methodological part of this study, the sensitivity, specificity, positive predictive value and negative predictive value of the symptomatic approach were 91·5, 69·7, 87·7 and 77·5%, respectively. The symptomatic approach had 27·7% sensitivity for bacterial vaginosis, 16·6% for trichomonas vaginalis and 62·8% for candida albicans, compared to the microscopic results. The sensitivity of the approach was higher for the identification of candidiasis compared to bacterial vaginosis and trichomonas vaginalis. Conclusion. From the results, it is suggested that the symptomatic approach model can be used by nurses who work in women’s health area to diagnose vaginal infections. Relevance to clinical practice. This study showed that trained clinician nurses will be able to diagnose and manage vaginal infections – especially candidiasis – by using the symptomatic approach. Moreover, the symptomatic approach will encourage women not to delay or fail to seek treatment for their health problems, especially for vaginal infections in conservative societies.  相似文献   
60.
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