全文获取类型
收费全文 | 2463篇 |
免费 | 380篇 |
国内免费 | 56篇 |
专业分类
耳鼻咽喉 | 22篇 |
儿科学 | 22篇 |
妇产科学 | 15篇 |
基础医学 | 59篇 |
口腔科学 | 31篇 |
临床医学 | 233篇 |
内科学 | 99篇 |
皮肤病学 | 8篇 |
神经病学 | 63篇 |
特种医学 | 73篇 |
外科学 | 155篇 |
综合类 | 872篇 |
预防医学 | 100篇 |
眼科学 | 20篇 |
药学 | 94篇 |
5篇 | |
中国医学 | 988篇 |
肿瘤学 | 40篇 |
出版年
2024年 | 66篇 |
2023年 | 81篇 |
2022年 | 131篇 |
2021年 | 181篇 |
2020年 | 184篇 |
2019年 | 149篇 |
2018年 | 116篇 |
2017年 | 29篇 |
2016年 | 51篇 |
2015年 | 57篇 |
2014年 | 73篇 |
2013年 | 227篇 |
2012年 | 130篇 |
2011年 | 131篇 |
2010年 | 114篇 |
2009年 | 119篇 |
2008年 | 7篇 |
2007年 | 74篇 |
2006年 | 12篇 |
2005年 | 12篇 |
2004年 | 15篇 |
2003年 | 5篇 |
2002年 | 7篇 |
2001年 | 377篇 |
2000年 | 278篇 |
1999年 | 203篇 |
1998年 | 63篇 |
1996年 | 3篇 |
1989年 | 1篇 |
1985年 | 1篇 |
1983年 | 1篇 |
1949年 | 1篇 |
排序方式: 共有2899条查询结果,搜索用时 0 毫秒
1.
References: 《生殖医学杂志》2007,16(Z1):56-59
Objective To investigate the correlation between TNF-α and IL-6 levels in cervical mucous during follicular development and ovulation stimulation in different protocols.Methods 36 infertile women were set up as experimental groups,divided into CC, HMG, IVF-ET group,each group consisted of 12 infertile women and 15 women with normal menstrual cycles were choiced as control group.Cervical mucous during follicular phase, luteal phase and ovulation phase were collected.TNF-α, IL-6 levels in cervical mucous were measured by radioimmunology assay (RIA).Follicular development were monitored by transvaginal ultrasonagraphy.Results (1) TNF-α levels in cervical mucous of experimental groups and control group were periodically various among the reproductive cycle.It increased during follicular phase, reached to peak during ovulation phase, and decreased during luteal phase (P<0.05).IL-6 levels had no obvious periodical changes.(2) Compared with CC and control group, levels of TNF-α,IL-6 in HMG and IVF-ET group were significantly higher (P<0.05).(3) Levels of TNF-α and IL-6 in cervical mucous were positively correlated with the dominant follicle diameter (r=0.261, r=0.192 respectively,P<0.05).(4) TNF-α and IL-6 showed positive correlation in the reproductive cycle (r=0.782,P<0.05).Conclusions (1) TNF-α level shows a cyclic change in the reproductive cycle and peaks during ovulation,whereas IL-6 level does not.(2) TNF-α and IL-6 may play a certain role in the process of follicular development and ovulation.(3)The levels of TNF-α and IL-6 are up-regulated by gonadotrophic hormone.(4) TNF-α and IL-6 may have coordination properties and participate in the same biological effects. 相似文献
2.
References: 《生殖医学杂志》2007,16(Z1):79-83
Objectives:To assess the clinical outcomes of frozen-thawed blastocysts transfer in natural and hormonally controlled cycles.Methods:A retrospective analysis of natural and hormonally controlled cycle for 246 frozen-thawed blastocyst transfer cycles,the clinical pregnancy rate,implantation rate,early abortion rate were compared.Results:Of the 192 hormonally controlled cycles,the cancel rate,clinical pregnancy rate per ET,implantation rate and abortion rate were 7.3%(14/192),53.9%(96/178),38.8%(131/338)and 11.5%(11/96)respectively,whereas in 54 natural cycles,these rates were 16.7%(9/54),68.9%(31/45),52.9%(45/85)and 16.1%(5/31)respectively.There was no significant difference between the two groups with regard to the clinical pregnancy and abortion rate per ET,but the cancel rate and implantation rate were higher in natural cycles.However,the pregnancy and implantation rates of patients without PCOS in hormonal control cycles(57.2%,40.9%)were similar with those in natural cycles(P>0.05).Conclusion:These findings suggested that both hormonally controlled and natural cycles had similar pregnancy outcomes in frozen-thawed blastocysts transfer. 相似文献
3.
4.
5.
为了实现科技期刊编辑、出版发行工作的电子化,推进科技信息交流的网络化进程,我刊现已入网“万方数据资源系统(ChinaInfo)数字化期刊群”。所以,向本刊投稿并录用的稿件文章,将一律由编辑部统一纳入万方数据资源系统(ChinaInfo),进入因特网提供信息服务。凡有不同意者,请另投它刊。本刊对编入的文稿,均不再另付稿酬。 万方数据资源系统数字化期刊群是国家“九五”重点科技攻关项目,截至1999年底,已有1000种期刊全文上网(网址:http:∥www.chinainfo.gov.cn/periodical)。本刊全文内容按照统一格式制作编入万方数据资源系统后,读者可通过因特网进入万方数据资源系统(ChinaInfo)免费(一年后开始酌情收费)查询浏览本刊内容,也欢迎各界朋友向我刊提出宝贵意见、建议,或订阅本刊。 《河南医学研究》编辑部 二○○一年二月第10卷 相似文献
6.
7.
崔云教授认为,天癸衰竭、肾脏虚衰是男性更年期综合征的根本病机,水不荣木、肝气郁结是本病的关键病机,应重视生理和心理双重诊治。其治身之法包括肝肾同补以益虚损、滋肾疏肝祛邪以调气血,选方用药精当;其治心之法主要通过言语疏导、运动减压等方式调畅情志。 相似文献
8.
9.
10.
外感热病是由外邪侵入人体,以发热为主要症状的一类疾病,严重影响患者健康。杨仓良教授根
据毒邪学说及外感热病的发病特点,认为毒邪是外感热病的主要致病因素,主张分期论治。杨教授认为外感热
病初期由风毒、寒毒、湿毒、热毒侵犯所致,投祛风攻毒汤、散寒攻毒汤、利湿攻毒汤、清热攻毒汤等以解表
攻毒;中期痰瘀毒内生,阻滞经络气血,以损伤脏腑脉络为害,投化痰攻毒汤、逐瘀攻毒汤等加减以达化痰逐
瘀攻毒之目的;后期毒邪乘虚入里,虚与毒互结,相互为患,致气虚毒恋、血虚毒恋、阴虚毒恋、阳虚毒恋
等,采用补气攻毒汤、补血攻毒汤、滋阴攻毒汤、温阳攻毒汤等加减以收扶正攻毒之效。杨仓良教授认为外感
热病属凶险顽固难治之疾,临床应不拘泥于一法一方,提倡早期中西医结合治标,中期内外合用治本,后期针
药并用断根,恢复期锻炼强身等法,以达杂合以治之目的。 相似文献