全文获取类型
收费全文 | 3700篇 |
免费 | 194篇 |
国内免费 | 35篇 |
专业分类
耳鼻咽喉 | 82篇 |
儿科学 | 189篇 |
妇产科学 | 217篇 |
基础医学 | 254篇 |
口腔科学 | 103篇 |
临床医学 | 289篇 |
内科学 | 987篇 |
皮肤病学 | 66篇 |
神经病学 | 223篇 |
特种医学 | 172篇 |
外科学 | 778篇 |
综合类 | 45篇 |
一般理论 | 1篇 |
预防医学 | 85篇 |
眼科学 | 139篇 |
药学 | 147篇 |
中国医学 | 3篇 |
肿瘤学 | 149篇 |
出版年
2023年 | 33篇 |
2022年 | 31篇 |
2021年 | 105篇 |
2020年 | 77篇 |
2019年 | 99篇 |
2018年 | 121篇 |
2017年 | 103篇 |
2016年 | 174篇 |
2015年 | 186篇 |
2014年 | 204篇 |
2013年 | 241篇 |
2012年 | 303篇 |
2011年 | 234篇 |
2010年 | 172篇 |
2009年 | 165篇 |
2008年 | 266篇 |
2007年 | 282篇 |
2006年 | 244篇 |
2005年 | 248篇 |
2004年 | 185篇 |
2003年 | 145篇 |
2002年 | 123篇 |
2001年 | 58篇 |
2000年 | 45篇 |
1999年 | 41篇 |
1998年 | 7篇 |
1997年 | 6篇 |
1996年 | 9篇 |
1995年 | 5篇 |
1994年 | 2篇 |
1993年 | 1篇 |
1992年 | 3篇 |
1991年 | 2篇 |
1990年 | 1篇 |
1989年 | 2篇 |
1986年 | 3篇 |
1985年 | 1篇 |
1984年 | 1篇 |
1969年 | 1篇 |
排序方式: 共有3929条查询结果,搜索用时 187 毫秒
1.
2.
3.
Sibelnur Avcil Pınar Uysal Faruk Demir Duygu Erge Imran Kurt Omurlu Ayse Yenigun 《The Journal of asthma》2019,56(6):618-626
Objectives: The aim of this study was to investigate the associations of asthma with the psychological profile (depression and anxiety) of children with asthma and their mothers as well as the attitudes of these mothers toward their children and their family relationships. Methods: Sixty-four children with asthma, 60 healthy children and their mothers were included in the study. The Children’s Depression Inventory (CDI) and Childhood Anxiety Sensitivity Index (CASI) were applied to the children. All mothers completed the Beck Depression Inventory, the State-Trait Anxiety Inventory, the Parental Attitude Research Instrument and the Family Assessment Device. Results: CASI scores were significantly higher in children with asthma (p?<?0.001) than in healthy children. The increasing duration and severity of asthma were associated with increasing anxiety levels in children with asthma. Depression and anxiety scores were significantly higher in the mothers of children with asthma than in the comparison group. The mothers of children with asthma did not have supportive and friendly relationships with their children. In addition, these mothers had significantly higher Attitude of Hostility and Rejection, Attitude of Over-parenting and Authoritarian Attitude scores than those of the comparison group. Increasing duration and severity of asthma influenced family functions and the attitude of the mothers of children with asthma. There was a correlation between an increasing number of emergency department visits and increasing depression in the mothers of children with asthma. Conclusions: This cross-sectional study revealed that the disease may negatively affect the lives of children with asthma and their mothers and their family relationships. 相似文献
4.
Omer AlkanAysenur Demir 《Asian Pacific journal of cancer prevention》2020,21(11):3309-3315
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
5.
Raya Saab MD Anas Obeid MD Fatiha Gachi MD Houda Boudiaf MD Lilit Sargsyan MD Khulood Al-Saad MD Tamar Javakhadze MD Azim Mehrvar MD Sawsan Sati Abbas MD Yasir Saadoon Abed Al-Agele MD Salma Al-Haddad MD Mouroge Hashim Al Ani MD Suleiman Al-Sweedan MD Amani Al Kofide MD Wasil Jastaniah MD Nisreen Khalifa MD Elie Bechara MD Malek Baassiri MD Peter Noun MD Jamila El-Houdzi MD Mohammed Khattab MD Krishna Sagar Sharma MD Yasser Wali MD Naureen Mushtaq MD Aliya Batool MD Mahwish Faizan MD Muhammad Rafie Raza MD Mohammad Najajreh MD Mohammed Awad Mohammed Abdallah MD Ghada Sousan MD Khaled M. Ghanem MD Ulker Kocak MD Tezer Kutluk MD Hacı Ahmet Demir MD Hamoud Hodeish MD Samar Muwakkit MD Asim Belgaumi MD Abdul-Hakim Al-Rawas MD Sima Jeha MD 《Cancer》2020,126(18):4235-4245
6.
Targeting in a cellular level is still one of the major challenges in biomedical treatments. However, new synthetic and analytical techniques now allow the development of precisely prepared macromolecules. Thus, glycopolymer chains are reported to be prepared with controlled length, monomer sequences, as well as chain‐folded structures. A high level of complexity in synthetic macromolecules also allows increased selectivity in targeting, which is a key factor in biomedical applications. 相似文献
7.
We present a case of 45-year-old female patient with the diagnosis of seropositive rheumatoid arthritis, who was admitted to our rheumatology department with exacerbation of the disease. The patient''s disease activity score (DAS 28) was 6.9. Physical examination revealed changes in the lung auscultation as a rough breathing sound at the middle and lower lobe of the right lung. Chest X-ray revealed multiple nodular densities in both lungs. Lung biopsy was performed for the diagnosis and revealed necrotizing granulomas with central fibrinoid necrosis surrounded by epithelioid cells. Such a histopathological picture is typical for rheumatoid nodules. Finally the patient was treated with rituximab, with significant improvement. 相似文献
8.
9.
Murat Gunay Mahmut Dogru Gokhan Celik Betul Onal Gunay 《Cutaneous and ocular toxicology》2019,38(2):131-135
Purpose: To evaluate retinal nerve fiber layer thickness (RNFLT), ganglion cell layer thickness (GCLT), subfoveal choroidal thickness (SFCT), and central retinal thickness (CRT) in asthmatic children who were under inhaled corticosteroid treatment by using Swept-Source Optical Coherence Tomography (SS-OCT).Material and methods: Fifty-three children were prospectively analyzed in the study. Group 1 included 31 asthmatic children and group 2 included 22 healthy children. Asthmatic children received a dose 250?μg daily of inhaled fluticasone propionate (Flexotide, GlaxoSmithKline, Middlesex, UK). Allergy parameters including, exposure to smoke, eosinophil count, percentage of eosinophils, immunoglobuline (Ig) E levels, number of asthma attacks, number of sensitivity to allergens and follow-up time were recorded. The RNFLT, GCLT, SFCT, and CRT were analyzed with SS-OCT and the data were compared between the groups.Results: There were 13 girls (41.9%) and 18 boys (58.1%) in group 1 and 13 girls (59.1%) and 9 boys (40.9%) in group 2 (p?=?0.22). The mean age was 9.3?±?2.2 years in group 1 and 9.9?±?1.5 years in group 2 (p?=?0.08). The mean CRT (239.26?±?34.56 µm versus 226.82?±?26.23 µm, p?=?0.22) and mean SFCT (273.97?±?40.95 µm versus 280.41?±?32.78 µm, p?=?0.54) did not significantly differ between the groups. The superior, inferior, and average RNFLT were significantly lower in group 1 than group 2 (p?0.05). There were significant correlations between total corticosteroid dose and RNFLT (p?0.05) and between IgE levels and GCLT (p?0.05).Conclusions: The SS-OCT revealed that asthmatic children under inhaled corticosteroid treatment have lower RNFLT than healthy subjects. 相似文献
10.
Martin R. Späth Malte P. Bartram Nicolàs Palacio-Escat K. Johanna R. Hoyer Cedric Debes Fatih Demir Christina B. Schroeter Amrei M. Mandel Franziska Grundmann Giuliano Ciarimboli Andreas Beyer Jayachandran N. Kizhakkedathu Susanne Brodesser Heike Göbel Jan U. Becker Thomas Benzing Bernhard Schermer Martin Höhne Markus M. Rinschen 《Kidney international》2019,95(2):333-349