全文获取类型
收费全文 | 81210篇 |
免费 | 5107篇 |
国内免费 | 3173篇 |
专业分类
耳鼻咽喉 | 494篇 |
儿科学 | 2114篇 |
妇产科学 | 1750篇 |
基础医学 | 6203篇 |
口腔科学 | 2137篇 |
临床医学 | 7921篇 |
内科学 | 14966篇 |
皮肤病学 | 771篇 |
神经病学 | 2986篇 |
特种医学 | 3702篇 |
外科学 | 6343篇 |
综合类 | 15411篇 |
现状与发展 | 3篇 |
一般理论 | 11篇 |
预防医学 | 8353篇 |
眼科学 | 1780篇 |
药学 | 5599篇 |
7篇 | |
中国医学 | 5426篇 |
肿瘤学 | 3513篇 |
出版年
2024年 | 65篇 |
2023年 | 583篇 |
2022年 | 527篇 |
2021年 | 903篇 |
2020年 | 797篇 |
2019年 | 426篇 |
2018年 | 1011篇 |
2017年 | 995篇 |
2016年 | 1118篇 |
2015年 | 1184篇 |
2014年 | 1401篇 |
2013年 | 1803篇 |
2012年 | 2864篇 |
2011年 | 5561篇 |
2010年 | 3536篇 |
2009年 | 2666篇 |
2008年 | 3393篇 |
2007年 | 3125篇 |
2006年 | 3088篇 |
2005年 | 4049篇 |
2004年 | 8302篇 |
2003年 | 7606篇 |
2002年 | 5940篇 |
2001年 | 4783篇 |
2000年 | 2721篇 |
1999年 | 3302篇 |
1998年 | 2426篇 |
1997年 | 2093篇 |
1996年 | 1344篇 |
1995年 | 1126篇 |
1994年 | 1186篇 |
1993年 | 1783篇 |
1992年 | 1515篇 |
1991年 | 1281篇 |
1990年 | 977篇 |
1989年 | 833篇 |
1988年 | 644篇 |
1987年 | 522篇 |
1986年 | 516篇 |
1985年 | 252篇 |
1984年 | 140篇 |
1983年 | 86篇 |
1982年 | 76篇 |
1981年 | 75篇 |
1980年 | 51篇 |
1979年 | 68篇 |
1978年 | 46篇 |
1977年 | 64篇 |
1975年 | 63篇 |
1974年 | 51篇 |
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
21.
痤疮可辨为阴、阳两证。阳疮者,缘患者劳汗被寒、玄府闭合,汗脂凝聚日久不得外排,蕴热搏结气血而生疮化腐,疮症为热为痛,此为易治;阴疮者,由阳疮转化而来,缘患者外感寒风、内伤生冷,且医者又重用寒凉、失于托透,以至气血冰凝,久不溃脓或溃脓难出,此为难治。根据难治性痤疮临床表现,其多类属于阴疮,以阳虚表郁、邪闭毛窍为致病之关键,其中表郁毛窍、邪闭肌腠为病之标,阳虚阴凝为病之本。治疗当以温阳透发、祛邪外达为法。以麻黄附子细辛汤温阳化阴滞、发阳透毒治其本,待阴邪发越,即用火针强开门户、消疮排脓治其标。标本兼治、针药结合的方法治疗难治性痤疮在临床中能够安全有效地消除痤疮、改善皮损、降低复发率。 相似文献
22.
23.
María Cabrerizo Gloria Trallero María José Pena Amaia Cilla Gregoria Megias Carmen Mu?oz-Almagro Eva Del Amo Diana Roda Ana Isabel Mensalvas Antonio Moreno-Docón Juan García-Costa Nuria Rabella Manuel Ome?aca María Pilar Romero Sara Sanbonmatsu-Gámez Mercedes Pérez-Ruiz María José Santos-Mu?oz Cristina Calvo And the study group of “Enterovirus parechovirus infections in children under ?years-old Spain” PI- 《European journal of pediatrics》2015,174(11):1511-1516
24.
25.
Emmi Helle Aldo Córdova-Palomera Tiina Ojala Priyanka Saha Praneetha Potiny Stefan Gustafsson Erik Ingelsson Michael Bamshad Deborah Nickerson Jessica X. Chong University of Washington Center for Mendelian Genomics Euan Ashley James R. Priest 《Genetic epidemiology》2019,43(2):215-226
Loss of function variants in NOTCH1 cause left ventricular outflow tract obstructive defects (LVOTO). However, the risk conferred by rare and noncoding variants in NOTCH1 for LVOTO remains largely uncharacterized. In a cohort of 49 families affected by hypoplastic left heart syndrome, a severe form of LVOTO, we discovered predicted loss of function NOTCH1 variants in 6% of individuals. Rare or low-frequency missense variants were found in 16% of families. To make a quantitative estimate of the genetic risk posed by variants in NOTCH1 for LVOTO, we studied associations of 400 coding and noncoding variants in NOTCH1 in 1,085 cases and 332,788 controls from the UK Biobank. Two rare intronic variants in strong linkage disequilibrium displayed significant association with risk for LVOTO amongst European-ancestry individuals. This result was replicated in an independent analysis of 210 cases and 68,762 controls of non-European and mixed ancestry. In conclusion, carrying rare predicted loss of function variants in NOTCH1 confer significant risk for LVOTO. In addition, the two intronic variants seem to be associated with an increased risk for these defects. Our approach demonstrates the utility of population-based data sets in quantifying the specific risk of individual variants for disease-related phenotypes. 相似文献
26.
Which infants with eczema are at risk of food allergy? Results from a population‐based cohort
下载免费PDF全文
![点击此处可从《Clinical and experimental allergy》网站下载免费的PDF全文](/ch/ext_images/free.gif)
28.
29.
Bi-Hua BIE Yong CHEN Zhi-Qi ZHAO Institute of Neurobiology Fu-Dan University Shanghai China Institute of Shanghai Physiology Chinese Academy of Sciences Shanghai China 《中国神经科学杂志》2006,(2)
Objective Ligustrazine, also named as tetramethylpyrazine, is a compound purified from Ligusticum chuanxiong hort and has ever been testified to be a calcium antagonist. The present investigation was to determine the antinoci-ceptive effect of ligustrazine and, if any, the peripheral ionic mechanism involved. Methods Paw withdrawal Latency ( PWL) to noxious heating was measured in vivo and whole-cell patch recording was performed on small dorsal root ganglion (DRG) neurons. Results Intraplantar injection of ligustrazine (0.5 mg in 25μl) significantly prolonged the withdrawal latency of ipsilateral hindpaw to noxious heating in the rat. Ligustrazine not only reversibly inhibited high-voltage gated calcium current of dorsal root ganglion (DRG) neuron in dose-dependent manner with IC50 of 1.89 mmol/L, but also decreased tetrodotoxin (TTX) -resistant sodium current in relatively selective and dose-dependent manner with IC50 of 2.49 mmol/L. Conclusion The results suggested that ligustrazine could elevate the threshold of thermal nociception through inhibiting the high-voltage gated calcium current and TTX-resistant sodium current of DRG neuron in the rat. 相似文献
30.