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   3337篇
  免费   218篇
  国内免费   30篇
耳鼻咽喉   73篇
儿科学   35篇
妇产科学   31篇
基础医学   536篇
口腔科学   182篇
临床医学   247篇
内科学   527篇
皮肤病学   94篇
神经病学   145篇
特种医学   197篇
外科学   507篇
综合类   11篇
预防医学   135篇
眼科学   98篇
药学   399篇
中国医学   69篇
肿瘤学   299篇
  2024年   3篇
  2023年   38篇
  2022年   99篇
  2021年   152篇
  2020年   73篇
  2019年   80篇
  2018年   120篇
  2017年   90篇
  2016年   133篇
  2015年   191篇
  2014年   224篇
  2013年   260篇
  2012年   362篇
  2011年   307篇
  2010年   170篇
  2009年   130篇
  2008年   186篇
  2007年   146篇
  2006年   153篇
  2005年   129篇
  2004年   117篇
  2003年   74篇
  2002年   69篇
  2001年   66篇
  2000年   50篇
  1999年   36篇
  1998年   18篇
  1997年   13篇
  1996年   9篇
  1995年   8篇
  1994年   9篇
  1993年   7篇
  1992年   12篇
  1991年   8篇
  1990年   3篇
  1989年   3篇
  1988年   5篇
  1987年   3篇
  1986年   3篇
  1985年   4篇
  1983年   6篇
  1982年   3篇
  1981年   2篇
  1980年   2篇
  1979年   3篇
  1976年   1篇
  1975年   1篇
  1973年   4篇
排序方式: 共有3585条查询结果,搜索用时 15 毫秒
71.
This report illustrates the successful nonsurgical and nonprosthetic camouflage treatment of a skeletal Class II open bite malocclusion combined with missing mandibular first molars bilaterally. In the mandible, the second and third molars were uprighted and protracted, substituting for the missing first molars. In the maxilla, anterior bodily retraction and full-arch intrusion were achieved following premolar and second molar extraction, which also induced autorotation of the mandible. The treatment outcome and prognosis were confirmed with three-dimensional superimposition techniques, along with long-term stability.  相似文献   
72.
73.
74.
75.
76.
77.
ABSTRACT: The purpose of this study was to investigate the contribution of PAX9 gene to the risk of nonsyndromic cleft lip with or without cleft palate (NS-CL/P). The samples consisted of 142 Korean NS-CL/P families (90 males and 52 females; 9 cleft lip, 26 cleft lip and alveolus, and 107 cleft lip and palate; 76 trios and 66 dyads). A total of 10 single-nucleotide polymorphisms (SNPs) were tested for association with Korean CL/P case-parent trios using transmission disequilibrium test (TDT) and conditional logistic regression models. The minor allele frequency, heterozygosity, and a χ test for Hardy-Weinberg equilibrium at each SNP were computed between parents. Pairwise linkage disequilibrium was computed as both D' and r for all SNPs. Both allelic and genotypic TDTs were performed for individual SNPs using family-based association test program. Sliding windows of haplotypes consisting of 2 to 8 SNPs were tested using haplotype-based association test program. Genotypic odd ratios were obtained from conditional logistic regression models using STATA software. The family-based TDT using individual SNPs and 2- to 8-SNP haplotypes of the gene indicated a significant association at rs17104928 (P = 0.014). The haplotype analysis revealed that the association was most significant for the haplotype consisting of 3 SNPs (rs2073247, rs17104928, and rs17176643; P = 0.007). G/A heterozygote at rs17104928 had a significantly increased association with NS-CL/P (genotypic odd ratio, 2.88; 95% confidence interval, 1.42-5.84; P = 0.0014, dominant model). The high-risk SNP and genotype may provide a better understanding of the etiologic role of PAX9 gene in NS-CL/P and potential options for genetic counseling.  相似文献   
78.
79.
Autoimmune hepatitis (AIH) has been reported in association with Sjögren''s syndrome (SS). Drug-induced AIH has been rarely reported. A rare case of the co-development of AIH and SS in a 53-year-old woman after the consumption of herbal medicines is described. After admission, the patient complained of dryness in her mouth, and she was subsequently diagnosed with SS, which had not been detected previously. The patient''s bilirubin and aminotransferase levels initially decreased following conservative management; however, they later began to progressively increase. A diagnosis of AIH was made based on the scoring system proposed by the International Autoimmune Hepatitis Group. The patient was administered a combination of prednisolone and azathioprine, and the results of follow-up liver-function tests were found to be within the normal range. This is an unusual case of AIH and SS triggered simultaneously by the administration of herbal medicines.  相似文献   
80.
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