全文获取类型
| 收费全文 | 4348612篇 |
| 免费 | 349923篇 |
| 国内免费 | 14700篇 |
专业分类
| 耳鼻咽喉 | 60377篇 |
| 儿科学 | 139508篇 |
| 妇产科学 | 114359篇 |
| 基础医学 | 667555篇 |
| 口腔科学 | 118113篇 |
| 临床医学 | 396872篇 |
| 内科学 | 790390篇 |
| 皮肤病学 | 107888篇 |
| 神经病学 | 368658篇 |
| 特种医学 | 169698篇 |
| 外国民族医学 | 753篇 |
| 外科学 | 657019篇 |
| 综合类 | 121337篇 |
| 现状与发展 | 24篇 |
| 一般理论 | 2622篇 |
| 预防医学 | 358613篇 |
| 眼科学 | 100982篇 |
| 药学 | 307890篇 |
| 23篇 | |
| 中国医学 | 11982篇 |
| 肿瘤学 | 218572篇 |
出版年
| 2021年 | 56350篇 |
| 2020年 | 35907篇 |
| 2019年 | 58941篇 |
| 2018年 | 74533篇 |
| 2017年 | 56758篇 |
| 2016年 | 62887篇 |
| 2015年 | 75807篇 |
| 2014年 | 110096篇 |
| 2013年 | 175691篇 |
| 2012年 | 124974篇 |
| 2011年 | 129738篇 |
| 2010年 | 126143篇 |
| 2009年 | 127794篇 |
| 2008年 | 115842篇 |
| 2007年 | 123186篇 |
| 2006年 | 131973篇 |
| 2005年 | 126009篇 |
| 2004年 | 127223篇 |
| 2003年 | 117440篇 |
| 2002年 | 106667篇 |
| 2001年 | 166966篇 |
| 2000年 | 162041篇 |
| 1999年 | 148701篇 |
| 1998年 | 71692篇 |
| 1997年 | 67639篇 |
| 1996年 | 65660篇 |
| 1995年 | 61071篇 |
| 1994年 | 54998篇 |
| 1993年 | 51029篇 |
| 1992年 | 106645篇 |
| 1991年 | 101415篇 |
| 1990年 | 97262篇 |
| 1989年 | 94832篇 |
| 1988年 | 87154篇 |
| 1987年 | 85325篇 |
| 1986年 | 80207篇 |
| 1985年 | 78378篇 |
| 1984年 | 65424篇 |
| 1983年 | 58217篇 |
| 1982年 | 47214篇 |
| 1981年 | 43878篇 |
| 1980年 | 41098篇 |
| 1979年 | 55125篇 |
| 1978年 | 44776篇 |
| 1977年 | 40004篇 |
| 1976年 | 36859篇 |
| 1975年 | 36823篇 |
| 1974年 | 39621篇 |
| 1973年 | 37760篇 |
| 1972年 | 35371篇 |
排序方式： 共有10000条查询结果，搜索用时 15 毫秒
991.
992.
993.
994.
995.
Suchi Raghunathan Corey L. Reynolds Robert J. Schwartz M. David Stewart Bradley K. McConnell 《Fundamental & clinical pharmacology》2019,33(1):25-30
Inbred mouse strains are the most widely used mammalian model organism in biomedical research owing to ease of genetic manipulation and short lifespan; however, each inbred strain possesses a unique repertoire of deleterious homozygous alleles that can make a specific strain more susceptible to a particular disease. In the current study, we report dystrophic cardiac calcinosis (DCC) in C.B‐17 SCID male mice at 10 weeks of age with no significant change in cardiac function. Acquisition of DCC was characterized by myocardial injury, fibrosis, calcification, and necrosis of the tissue. At 10 weeks of age, 38% of the C.B‐17 SCID mice from two different commercial colonies exhibited significant calcinosis on the ventricular epicardium, predominantly on the right ventricle. The frequency of calcinosis was more than 50% for mice obtained from Taconic's Cambridge City colony and 25% for mice obtained from Taconic's German Town colony. Interestingly, the DCC phenotype did not affect cardiac function at 10 weeks of age. No differences in echocardiography or electrocardiography were observed between the calcinotic and non‐calcinotic mice from either colony. Our findings suggest that C.B‐17 SCID mice exhibit DCC as early as 10 weeks of age with no significant impact on cardiac function. This strain of mice should be cautiously considered for the study of cardiac physiology. 相似文献
996.
Ángela M. Ortega-Galán M. Dolores Ruiz-Fernández Rocío Ortiz-Amo José Cabrera-Troya Inés M. Carmona-Rega Olivia Ibáñez-Masero 《Enfermería clínica》2019,29(1):10-17
Objective
To discover the experiences of end-of-life patients attended by the emergency services, through the discourse of the family caregivers who accompanied the family member in this care transit.Method
A qualitative approach study, based on the paradigm of hermeneutical phenomenology. In total, 81 family caregivers participated. The techniques used were the in-depth interview and the discussion group, with a total of 5 discussion groups and 41 interviews. The period of data collection was carried out between January 2013 and June 2014.Results
In the network of discourses obtained with respect to “Urgent Care”, all the codes were grouped in relation to a single argumentative line: deficiencies in urgent care. Among them, we found different dimensions that are established depending on the different times of care, or the different determinant aspects of these deficiencies: disorganization of the care received, lack of experience of the professionals in emergencies, application of general protocols in the emergency services, inadequate care in the treatment received, delays in emergency care.Conclusions
In general, we highlight the dissatisfaction of the family members with respect to the care received from the emergency services. The needs of these types of situation are not covered from these services and are of low quality. Therefore, it is necessary to reorient the care protocols for these patients. 相似文献997.
998.
Molly Orcutt Wendy C. King Melissa A. Kalarchian Michael J. Devlin Marsha D. Marcus Luis Garcia Kristine J. Steffen James E. Mitchell 《Surgery for obesity and related diseases》2019,15(2):295-303
Background
A history of childhood maltreatment and psychopathology are common in adults with obesity.Objectives
To report childhood maltreatment and to evaluate associations between severity and type of childhood maltreatment and lifetime history of psychopathology among adults with severe obesity awaiting bariatric surgery.Setting
Four clinical centers of the Longitudinal Assessment of Bariatric Surgery Research Consortium.Methods
The Childhood Trauma Questionnaire, which assesses presence/severity (i.e., none, mild, moderate, severe) of physical abuse, mental abuse, physical neglect, mental neglect, and sexual abuse, was completed by 302 female and 66 male bariatric surgery patients. Presurgery lifetime history of psychopathology and suicidal ideation/behavior were assessed with the Structured Clinical Interview for DSM-IV and the Suicidal Behavioral Questionnaire-Revised, respectively. Presurgery lifetime history of antidepressant use was self-reported.Results
Two thirds (66.6%) of females and 47.0% of males reported at least 1 form of childhood trauma; 42.4% and 24.2%, respectively, at greater than or equal to moderate severity. Among women, presence/greater severity of childhood mental or physical abuse or neglect was associated with a higher risk of history of psychopathology (i.e., major depressive disorder, posttraumatic stress disorder, other anxiety disorder, alcohol use disorder, binge eating disorder), suicidal ideation/behavior and antidepressant use (P for all ≤ .02). These associations were independent of age, race, education, body mass index, and childhood sexual abuse. Childhood sexual abuse was independently associated with a history of suicidal ideation/behavior and antidepressant use only (P for both ≤ .05). Statistical power was limited to evaluate these associations among men.Conclusion
Among women with obesity, presence/severity of childhood trauma was positively associated with relatively common psychiatric disorders. 相似文献999.
1000.