全文获取类型
收费全文 | 7085篇 |
免费 | 361篇 |
国内免费 | 61篇 |
专业分类
耳鼻咽喉 | 52篇 |
儿科学 | 359篇 |
妇产科学 | 166篇 |
基础医学 | 840篇 |
口腔科学 | 95篇 |
临床医学 | 501篇 |
内科学 | 1579篇 |
皮肤病学 | 144篇 |
神经病学 | 525篇 |
特种医学 | 204篇 |
外科学 | 1065篇 |
综合类 | 157篇 |
一般理论 | 1篇 |
预防医学 | 373篇 |
眼科学 | 239篇 |
药学 | 714篇 |
中国医学 | 93篇 |
肿瘤学 | 400篇 |
出版年
2023年 | 54篇 |
2022年 | 130篇 |
2021年 | 264篇 |
2020年 | 115篇 |
2019年 | 176篇 |
2018年 | 224篇 |
2017年 | 156篇 |
2016年 | 187篇 |
2015年 | 237篇 |
2014年 | 323篇 |
2013年 | 418篇 |
2012年 | 568篇 |
2011年 | 571篇 |
2010年 | 339篇 |
2009年 | 288篇 |
2008年 | 412篇 |
2007年 | 388篇 |
2006年 | 326篇 |
2005年 | 350篇 |
2004年 | 254篇 |
2003年 | 248篇 |
2002年 | 254篇 |
2001年 | 88篇 |
2000年 | 85篇 |
1999年 | 88篇 |
1998年 | 65篇 |
1997年 | 34篇 |
1996年 | 39篇 |
1995年 | 28篇 |
1994年 | 17篇 |
1993年 | 30篇 |
1992年 | 41篇 |
1991年 | 58篇 |
1990年 | 61篇 |
1989年 | 45篇 |
1988年 | 40篇 |
1987年 | 45篇 |
1986年 | 25篇 |
1985年 | 53篇 |
1984年 | 36篇 |
1983年 | 31篇 |
1982年 | 29篇 |
1981年 | 20篇 |
1980年 | 20篇 |
1979年 | 20篇 |
1978年 | 25篇 |
1977年 | 22篇 |
1973年 | 23篇 |
1971年 | 17篇 |
1969年 | 19篇 |
排序方式: 共有7507条查询结果,搜索用时 0 毫秒
101.
102.
103.
104.
The utilization of impedance technology has enhanced our understanding and assessment of esophageal dysmotility. Esophageal high-resolution manometry (HRM) catheters incorporated with multiple impedance electrodes help assess esophageal bolus transit, and the combination is termed high-resolution impedance manometry (HRIM). Novel metrics have been developed with HRIM—including esophageal impedance integral ratio, bolus flow time, nadir impedance pressure, and impedance bolus height—that augments the assessment of esophageal bolus transit. Automated impedance-manometry (AIM) analysis has enhanced understanding of the relationship between bolus transit and pressure phenomena. Impedance-based metrics have improved understanding of the dynamics of esophageal bolus transit into four distinct phases, may correlate with symptomatic burden, and can assess the adequacy of therapy for achalasia. An extension of the use of impedance involves impedance planimetry and the functional lumen imaging probe (FLIP), which assesses esophageal biophysical properties and distensibility, and could detect patterns of esophageal contractility not seen on HRM. Impedance technology, therefore, has a significant impact on esophageal function testing in the present day. 相似文献
105.
Yong Tao Byunghak Kang Daniel A. Petkovich Yuba R. Bhandari Julie In Genevieve Stein-OBrien Xiangqian Kong Wenbing Xie Nicholas Zachos Shinji Maegawa Himani Vaidya Stephen Brown Ray-Whay Chiu Yen Xiaojian Shao Jai Thakor Zhihao Lu Yi Cai Yuezheng Zhang Hariharan Easwaran 《Cancer cell》2019,35(2):315-328.e6
106.
107.
108.
Yuli Y. Kim Lisa D. Levine Sara L. Partington Prakash A. Patel Emily Ruckdeschel Suneeta Senapati Clarisa R. Gracia 《Journal of assisted reproduction and genetics》2020,37(12):3017
PurposePatients with single ventricle anatomy palliated with Fontan operation are at risk for thromboembolism, arrhythmia, and heart failure rendering pregnancy high risk or even contraindicated. Infertility and high rates of first trimester miscarriage are not uncommon. In vitro fertilization (IVF) with or without gestational surrogacy can be an option, but poses risks during ovarian stimulation, oocyte retrieval, and the post-procedural period. We present six cases of women with complex congenital heart disease status post Fontan operation who underwent successful IVF.MethodsCase series from a single-center tertiary care setting.ResultsIndications for referral were cardiac or fertility concerns for pregnancy of the congenital cardiologist. One woman had mild volume overload after oocyte retrieval requiring furosemide and one experienced post-operative colitis. There were no thrombotic complications.ConclusionsA multidisciplinary team-based approach can result in successful oocyte retrieval and IVF in women with complex congenital heart disease and Fontan physiology. 相似文献
109.
110.
Multiple sclerosis is commonly associated with bladder dysfunction, which is frequently reported to be the worst aspect of
the disease. Patients may experience bothersome bladder symptoms early in the course, and this should be explored. If necessary,
a formal evaluation of the lower urinary tract should be offered. The type of bladder dysfunction may also change with time,
which highlights the need for continual follow-up assessments. Anticipated problems are incomplete bladder emptying and disorders
with urine storage, which may occur simultaneously. This may lead to symptoms of overactive bladder and recurrent urinary
tract infections. Conservative measures for management should be used initially while other sinister pathology is excluded.
Newer treatments such as botulinum toxin A and neural stimulation techniques are replacing more invasive surgical procedures.
Treatment approaches have been described and should be offered by teams who are familiar with patients having uro-neurological
complaints. 相似文献