全文获取类型
收费全文 | 190770篇 |
免费 | 1791篇 |
国内免费 | 156篇 |
专业分类
耳鼻咽喉 | 1249篇 |
儿科学 | 6942篇 |
妇产科学 | 3561篇 |
基础医学 | 18180篇 |
口腔科学 | 1969篇 |
临床医学 | 13568篇 |
内科学 | 34767篇 |
皮肤病学 | 951篇 |
神经病学 | 18115篇 |
特种医学 | 9529篇 |
外科学 | 31089篇 |
综合类 | 2354篇 |
一般理论 | 1篇 |
预防医学 | 18561篇 |
眼科学 | 3021篇 |
药学 | 10387篇 |
中国医学 | 647篇 |
肿瘤学 | 17826篇 |
出版年
2023年 | 177篇 |
2022年 | 346篇 |
2021年 | 604篇 |
2020年 | 392篇 |
2019年 | 487篇 |
2018年 | 22399篇 |
2017年 | 17676篇 |
2016年 | 19887篇 |
2015年 | 1424篇 |
2014年 | 1514篇 |
2013年 | 1602篇 |
2012年 | 8206篇 |
2011年 | 22213篇 |
2010年 | 19463篇 |
2009年 | 12128篇 |
2008年 | 20432篇 |
2007年 | 22629篇 |
2006年 | 1504篇 |
2005年 | 3033篇 |
2004年 | 4204篇 |
2003年 | 5044篇 |
2002年 | 3083篇 |
2001年 | 405篇 |
2000年 | 555篇 |
1999年 | 322篇 |
1998年 | 343篇 |
1997年 | 308篇 |
1996年 | 199篇 |
1995年 | 199篇 |
1994年 | 164篇 |
1993年 | 118篇 |
1992年 | 127篇 |
1991年 | 172篇 |
1990年 | 171篇 |
1989年 | 127篇 |
1988年 | 92篇 |
1987年 | 79篇 |
1986年 | 62篇 |
1985年 | 60篇 |
1984年 | 56篇 |
1983年 | 51篇 |
1982年 | 51篇 |
1980年 | 49篇 |
1970年 | 28篇 |
1969年 | 27篇 |
1938年 | 60篇 |
1937年 | 25篇 |
1934年 | 30篇 |
1932年 | 56篇 |
1930年 | 46篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
As a consequence of the time-varying magnetic field induced by eddy currents, frequency drifting occurs when the sampling window of localized spectroscopy continuously shifts. The frequency drifting and the concomitant phase variations can severely affect spectroscopy results when data are acquired with multiple echo times (TEs), such as in the measurement of glutamate (Glu) concentration using the TE-averaged method. Specifically, the averaged spectra are further broadened and distorted in the presence of residual eddy currents, and editing of the coupled spins of Glu C4 protons is affected, resulting in errors in the measured relative intensity ratio. Postacquisition correction using unsuppressed water as reference can effectively minimize this detrimental effect, as manifested by the significantly enhanced signal intensity. Also, it is demonstrated that the methyl signals of creatine (Cr) at 3.0 ppm and choline (Cho) at 3.2 ppm can be used as internal references in finding frequency and phase disparities between different TEs. 相似文献
4.
Michele D. Mignogna Stefano Fedele Lucio Lo Russo Lorenzo Lo Muzio 《Journal of oral pathology & medicine》2003,32(4):200-205
BACKGROUND: The recurrent chronic orofacial swelling caused by orofacial granulomatosis (OFG) can cause significant cosmetic and functional problems but can be prevented if the disease is diagnosed early and promptly treated. Although the enlargement of the lips is described to be the most common presenting complaint, the clinical onset of OFG may be characterized by minor associated mucosal and neurological manifestations, making early diagnosis very difficult or, sometimes, merely presumable. PATIENTS AND METHODS: We retrospectively analyzed the clinical manifestations of 19 patients with OFG, who were examined at our institution between 1998 and 2002, in order to determine their initial manifestations and presenting symptoms. RESULTS: A total of 10 patients showed classical recurrent enlargement of the lips (six lower; four upper) as presenting symptom. In the other nine patients, OFG onset was characterized by transient unilateral facial nerve palsy (two cases), intraoral manifestations (two cases), recurrent swelling of the periorbital area (two cases), of the chin (one case), of the zygomatic area (one case), and of the cheeks (one case). CONCLUSION: Our data underlined that OFG onset could be frequently characterized by widely variable, multiform, and temporary clinical findings. Involvement of atypical sites of the orofacial region and presence of single minor manifestations may occur as presenting symptoms, often preceding the development of traditional clinical findings. 相似文献
5.
6.
7.
Magdalena Cortes Alessandro Lambiase Marta Sacchetti Silvia Aronni Stefano Bonini 陈旭 《美国医学会眼科杂志(中文版)》2006,18(1):30-32
泪管-耳-牙-指(趾)(LADD)综合征是一种具有多种表现的常染色体显性遗传疾病。最初在1967年由Levy报道。1例双侧泪液系统缺失、杯状耳、干嘴,以及牙、手臂和指(趾)异常的单发病例。之后一些新发现的临床表现,如肾脏异常、唾液腺缺乏、先天性髋脱位、先天性裂孔疝和横膈疝、感觉性耳聋和传导性耳聋、牙发育不全、四肢异常、口腔干燥和眼干都被报道与此综合征有关。 相似文献
8.
Susanne Ramsauer 《Zeitschrift für Psychodrama und Soziometrie》2007,6(2):293-302
Anliegen dieses Artikels ist, die besondere Qualit?t und Chance von Psychodramatischer Supervision zu beschreiben, und gleichzeitig
die Kompatibilit?t und fruchtbare Erg?nzung des Moreno’schen Ansatzes innerhalb des Formats Supervision innerhalb der Sozialen
Arbeit auf zuzeigen. Dies wird anhand von 2 ausgew?hlten Praxisbeispielen dargestellt. Die Handlungskompetenz von Supervisandinnen
und Supervisanden kann durch einfache psychodramatische Interventionen erweitert werden. Handlungshemmung wird überwunden,
Spontaneit?t und Kreativit?t kommen ins Laufen und er?ffnen Perspektiven. 相似文献
9.
10.
Debra L. Roter Richard M. Frankel Judith A. Hall David Sluyter 《Journal of general internal medicine》2006,21(1):28-34
Relationship-centered care reflects both knowing and feeling: the knowledge that physician and patient bring from their respective domains of expertise, and the physician’s and patient’s experience, expression, and perception of emotions during the medical encounter. These processes are conveyed and reciprocated in the care process through verbal and nonverbal communication. We suggest that the emotional context of care is especially related to nonverbal communication and that emotion-related communication skills, including sending and receiving nonverbal messages and emotional self-awareness, are critical elements of high-quality care. Although nonverbal behavior has received far less study than other care processes, the current review argues that it holds significance for the therapeutic relationship and influences important outcomes including satisfaction, adherence, and clinical outcomes of care. 相似文献