全文获取类型
收费全文 | 206654篇 |
免费 | 3233篇 |
国内免费 | 1034篇 |
专业分类
耳鼻咽喉 | 1472篇 |
儿科学 | 6999篇 |
妇产科学 | 3354篇 |
基础医学 | 21404篇 |
口腔科学 | 2026篇 |
临床医学 | 15638篇 |
内科学 | 35792篇 |
皮肤病学 | 1451篇 |
神经病学 | 18678篇 |
特种医学 | 10410篇 |
外国民族医学 | 5篇 |
外科学 | 32311篇 |
综合类 | 4787篇 |
现状与发展 | 7篇 |
一般理论 | 9篇 |
预防医学 | 19809篇 |
眼科学 | 3553篇 |
药学 | 12640篇 |
15篇 | |
中国医学 | 1680篇 |
肿瘤学 | 18881篇 |
出版年
2024年 | 61篇 |
2023年 | 411篇 |
2022年 | 1093篇 |
2021年 | 1505篇 |
2020年 | 861篇 |
2019年 | 954篇 |
2018年 | 22885篇 |
2017年 | 18097篇 |
2016年 | 20473篇 |
2015年 | 2386篇 |
2014年 | 2590篇 |
2013年 | 2707篇 |
2012年 | 9668篇 |
2011年 | 23700篇 |
2010年 | 20374篇 |
2009年 | 12813篇 |
2008年 | 21314篇 |
2007年 | 23390篇 |
2006年 | 2129篇 |
2005年 | 3659篇 |
2004年 | 4525篇 |
2003年 | 5313篇 |
2002年 | 3286篇 |
2001年 | 954篇 |
2000年 | 1126篇 |
1999年 | 730篇 |
1998年 | 454篇 |
1997年 | 417篇 |
1996年 | 251篇 |
1995年 | 256篇 |
1994年 | 229篇 |
1993年 | 158篇 |
1992年 | 196篇 |
1991年 | 252篇 |
1990年 | 260篇 |
1989年 | 179篇 |
1988年 | 138篇 |
1987年 | 117篇 |
1986年 | 93篇 |
1985年 | 76篇 |
1984年 | 52篇 |
1983年 | 57篇 |
1982年 | 54篇 |
1980年 | 60篇 |
1979年 | 33篇 |
1974年 | 36篇 |
1938年 | 60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 0 毫秒
1.
Thomas S. Klitzner Maggie Lee Sandra Rodriguez Ruey‐Kang R. Chang 《Congenital heart disease》2006,1(3):77-88
Background. It has been reported that gender differences in cardiovascular outcomes found in adults also are present in children who undergo surgical repair for congenital heart disease. Methods. California statewide hospital discharge data 1989–99 were used to study outcomes in children <18 years undergoing cardiac surgery. Hospital discharge data were linked to death registry data to study postdischarge death within 30 days of discharge. We used logistic regression to evaluate the effect of gender on mortality controlling for age, race and ethnicity, type of insurance, household income, date and month of surgery, type of admission, hospital case volume, and various types of procedures. Results. There were 25 402 cardiac surgery cases with 1505 in‐hospital deaths (mortality rate of 5.92%). An additional 37 deaths occurred within 30 days after hospital discharge. Crude mortality rates for males (5.99%) and females (5.84%) were not significantly different. However, fewer neonates were female and females underwent a higher proportion of low‐risk procedures than males. Logistic regression revealed that females, compared with males, had a significantly higher odds ratio (OR) for in‐hospital mortality (OR = 1.18, P < .01) and overall (up to 30 days post discharge) mortality (OR = 1.18, P < .01). The risk‐adjusted length of hospital stay was similar between females and males while charges per hospital day were slightly higher in females than males. The prevalence of Down syndrome, pulmonary hypertension, and failure to thrive were higher in females. Conclusions. Female gender is associated with an 18% higher in‐hospital and 30‐day postdischarge mortality as compared with male gender. There was no difference in length of hospital stay between males and females. The mechanism by which female gender acts as a risk factor requires further investigation. 相似文献
2.
皮质发育障碍模型的建立及其致痫敏感性的研究 总被引:1,自引:0,他引:1
目的:建立皮质发育障碍模型,探讨皮质发育障碍模型的敏感性。方法:在SD大鼠孕17d腹腔注入1,3-二氯乙烯-亚硝基脲(BCNU)制作皮质发育障碍模型;Nissl染色观察P60d仔鼠病理变化;选取P60d雄性仔鼠,腹腔注射氯化锂-毛果芸香碱,分别比较两组大鼠癫发生的潜伏期、持续状态时间和死亡率。结果:同龄仔鼠脑组织湿重实验组比对照组显著减轻(P<0.01);Nissl染色显示皮质变薄、皮质层次紊乱、海马区域异位细胞异常聚集;有皮质发育障碍的仔鼠注射氯化锂-毛果芸香碱后,癫发生的潜伏期显著缩短(P<0.01),癫持续状态时间延长(P<0.01),死亡率显著升高(P<0.05)。结论:BCNU致皮质发育障碍模型具有癫易感性。 相似文献
3.
H J Kim C H Kang Y T Kim S-W Sung J H Kim S M Lee C-G Yoo C-T Lee Y W Kim S K Han Y-S Shim J-J Yim 《The European respiratory journal》2006,28(3):576-580
Although surgical lung resection could improve prognosis in some patients with multidrug-resistant tuberculosis (MDR-TB), there are no reports on the optimal candidates for this surgery. The aim of the present study was to elucidate the prognostic factors for surgery in patients with MDR-TB. Patients who underwent lung resection for the treatment of MDR-TB between March 1993 and December 2004 were included in the present study. Treatment failure was defined as greater than or equal to two of the five cultures recorded in the final 12 months of treatment being positive, any one of the final three cultures being positive, or the patient having died during treatment. The variables that affected treatment outcomes were identified through univariate and multivariate logistic regression analysis. In total, 79 patients with MDR-TB were included in the present study. The treatment outcomes of 22 (27.8%) patients were classified as failure. A body mass index <18.5 kg x m(-2), primary resistance, resistance to ofloxacin and the presence of a cavitary lesion beyond the range of the surgical resection were associated with treatment failure. Low body mass index, primary resistance, resistance to ofloxacin and cavitary lesions beyond the range of resection are possible poor prognostic factors for surgical lung resection in multidrug-resistant tuberculosis patients. 相似文献
4.
5.
6.
7.
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