全文获取类型
收费全文 | 1465313篇 |
免费 | 113758篇 |
国内免费 | 13262篇 |
专业分类
耳鼻咽喉 | 17791篇 |
儿科学 | 45396篇 |
妇产科学 | 37728篇 |
基础医学 | 209767篇 |
口腔科学 | 38416篇 |
临床医学 | 147965篇 |
内科学 | 273501篇 |
皮肤病学 | 27945篇 |
神经病学 | 116415篇 |
特种医学 | 52663篇 |
外国民族医学 | 410篇 |
外科学 | 194027篇 |
综合类 | 57735篇 |
现状与发展 | 41篇 |
一般理论 | 468篇 |
预防医学 | 126929篇 |
眼科学 | 32565篇 |
药学 | 113981篇 |
239篇 | |
中国医学 | 13869篇 |
肿瘤学 | 84482篇 |
出版年
2021年 | 17334篇 |
2020年 | 12199篇 |
2019年 | 15552篇 |
2018年 | 20283篇 |
2017年 | 16745篇 |
2016年 | 16975篇 |
2015年 | 21418篇 |
2014年 | 28425篇 |
2013年 | 39875篇 |
2012年 | 55856篇 |
2011年 | 59181篇 |
2010年 | 36578篇 |
2009年 | 32803篇 |
2008年 | 51340篇 |
2007年 | 53307篇 |
2006年 | 52452篇 |
2005年 | 50070篇 |
2004年 | 45872篇 |
2003年 | 43480篇 |
2002年 | 41565篇 |
2001年 | 63342篇 |
2000年 | 64592篇 |
1999年 | 53842篇 |
1998年 | 15517篇 |
1997年 | 14242篇 |
1996年 | 13841篇 |
1995年 | 13080篇 |
1994年 | 12199篇 |
1993年 | 11254篇 |
1992年 | 41850篇 |
1991年 | 41035篇 |
1990年 | 39693篇 |
1989年 | 37533篇 |
1988年 | 34763篇 |
1987年 | 33849篇 |
1986年 | 32252篇 |
1985年 | 30713篇 |
1984年 | 23071篇 |
1983年 | 19623篇 |
1982年 | 11763篇 |
1979年 | 20815篇 |
1978年 | 14815篇 |
1977年 | 12065篇 |
1976年 | 11877篇 |
1975年 | 12114篇 |
1974年 | 14801篇 |
1973年 | 14476篇 |
1972年 | 13356篇 |
1971年 | 12418篇 |
1970年 | 11485篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
In 1963, Goffman argued that forming a group based on shared stigma may provide benefits. However, there is no empirical research on whether perception that a separate, unique, coherent group exists (i.e., group entitativity) influences coping, such as educating others or secrecy, for the stigmatized individual or his or her spouse. Further, little is known about how spouses influence each other in terms of promoting the education of others about a stigmatizing condition, especially when it comes to the role of believing that stigma-based groups, to which they may both belong, exist. This study provides a step toward bridging this gap in the research by applying the label management model in efforts to understand coping for couples in which one spouse is diagnosed with genetic mutations leading to alpha-1 antitrypsin deficiency (AATD). This study included 50 married couples in which one spouse is diagnosed with genetic mutations leading to alpha-1 antitrypsin deficiency (AATD). We found that group entitativity related to those with AATD counterbalanced the influence of genetic stigma on spouses’ intentions to keep the diagnosis secret or to educate others about it. Intrapersonal and interpersonal influences appeared among spouses. Attention is needed on the power of creating groups for stigmatized persons and their relatives. Indeed, people live within a dynamic world of group entities, and multiple social identities including spousal and familial. While attention has been paid to the diffusion of stigmas to loved ones, less has been paid to the uplift of group entities for them. 相似文献
82.
Feasibility and Diagnostic Potential of Pulmonary Transit Time Measurement by Contrast Echocardiography: A Pilot Study 下载免费PDF全文
83.
84.
目的 通过观察早产儿不同胎龄Toll样受体9(TLR9)的表达,探讨早产儿免疫功能低下的机制。方法 采集2010年7月至2014年6月在上海市嘉定区妇幼保健院产科出生的活产新生儿的脐血229份,按胎龄分为4组,28~31周组,31~34周组,34~37周组,≥37周组,采用流式细胞术和实时荧光定量PCR方法,分别检测其TLR9的蛋白和mRNA表达情况,了解其与胎龄之间的关系,并分析mRNA和蛋白表达间的相关性。结果 TLR9阳性细胞率在28~31周组,31~34周组,34~37周组,≥37周组分别为(15.93±6.23)%,(11.63±6.70)%,(13.66±6.88)%,(20.51±12.06)%;其在胎龄28~31周较高,至31~34周逐渐下降至最低,两组差异有统计学意义(P<0.05);34~37周后TLR9阳性细胞率表达逐渐升高,至≥37周达最高,两胎龄组比较,差异具有统计学意义(P<0.05)。31~37周间新生儿脐血TLR9阳性细胞率与胎龄呈正相关(r=0.273,P=0.006)。TLR9 mRNA表达在28~31周组,31~34周组,34~37周组,≥37周组分别为(4.95±3.44)%,(8.89±8.49)%,(13.91±10.92)%,(7.19±7.11)%;其在28~36周逐渐升高,与胎龄呈正相关(r=0.355,P< 0.001)。≥37周TLR9 mRNA表达量下降,该值虽高于28~31周,但差异无统计学意义(P>0.05)。相关性分析表明,同胎龄时期同样本新生儿的TLR9 mRNA和TLR9阳性细胞率之间存在负相关(r=-0.227,P=0.011)。结论 TLR9阳性细胞率和TLR9 mRNA表达在不同胎龄组新生儿间有差异,TLR9阳性细胞率表达在31~37周间随着胎龄的增加而增加,TLR9 mRNA在28~36周间随着胎龄的增加而增加。 相似文献
85.
86.
87.
88.
Eric S. Zhou Larissa Nekhlyudov Sharon L. Bober 《Translational andrology and urology》2015,4(2):218-231
There is a large and growing population of long-term cancer survivors. Primary care physicians (PCPs) are playing an increasingly greater role in the care of these patients across the continuum of cancer survivorship. In this role, PCPs are faced with the responsibility of managing a range of medical and psychosocial late effects of cancer treatment. In particular, the sexual side effects of treatment which are common and have significant impact on quality of life for the cancer survivor, often go unaddressed. This is an area of clinical care and research that has received increasing attention, highlighted by the presentation of this special issue on Cancer and Sexual Health. The aims of this review are 3-fold. First, we seek to overview common presentations of sexual dysfunction related to major cancer diagnoses in order to give the PCP a sense of the medical issues that the survivor may present with. Barriers to communication about sexual health issues between patient/PCPs in order are also described in order to emphasize the importance of PCPs initiating this important conversation. Next, we provide strategies and resources to help guide the PCP in the management of sexual dysfunction in cancer survivors. Finally, we discuss case examples of survivorship sexual health issues and highlight the role that a PCP can play in each of these case examples. 相似文献
89.
90.