全文获取类型
收费全文 | 513篇 |
免费 | 45篇 |
专业分类
耳鼻咽喉 | 1篇 |
儿科学 | 15篇 |
妇产科学 | 29篇 |
基础医学 | 46篇 |
口腔科学 | 1篇 |
临床医学 | 67篇 |
内科学 | 97篇 |
皮肤病学 | 7篇 |
神经病学 | 70篇 |
特种医学 | 5篇 |
外科学 | 49篇 |
综合类 | 3篇 |
一般理论 | 1篇 |
预防医学 | 57篇 |
眼科学 | 1篇 |
药学 | 59篇 |
肿瘤学 | 50篇 |
出版年
2023年 | 9篇 |
2022年 | 10篇 |
2021年 | 36篇 |
2020年 | 16篇 |
2019年 | 34篇 |
2018年 | 23篇 |
2017年 | 15篇 |
2016年 | 14篇 |
2015年 | 15篇 |
2014年 | 25篇 |
2013年 | 39篇 |
2012年 | 35篇 |
2011年 | 32篇 |
2010年 | 24篇 |
2009年 | 13篇 |
2008年 | 39篇 |
2007年 | 20篇 |
2006年 | 45篇 |
2005年 | 28篇 |
2004年 | 28篇 |
2003年 | 23篇 |
2002年 | 13篇 |
2001年 | 4篇 |
1999年 | 5篇 |
1998年 | 2篇 |
1996年 | 2篇 |
1995年 | 2篇 |
1994年 | 1篇 |
1993年 | 2篇 |
1977年 | 1篇 |
1969年 | 1篇 |
1967年 | 1篇 |
1915年 | 1篇 |
排序方式: 共有558条查询结果,搜索用时 0 毫秒
1.
Ikwunga Wonodi Gloria Reeves Dana Carmichael Ilene Verovsky Matthew T Avila Amie Elliott L Elliot Hong Helene M Adami Gunvant K Thaker 《Movement disorders》2007,22(12):1777-1782
Recent years have witnessed increased antipsychotic treatment of children despite limited long‐term safety data in children. In this study, motor side effects associated with the use of antipsychotic drugs in children were examined in a sample of pediatric psychiatric patients. Child and adolescent psychiatric patients receiving antipsychotics (most were on atypicals) for 6 months or longer (n = 118) were compared with antipsychotic‐naïve patients (n = 80) with similar age, sex ratio, and diagnoses. Only 19% of patients on antipsychotics had ever experienced psychotic symptoms. Eleven children (9%) on antipsychotics exhibited dyskinesia, when compared with 0 in the naïve group (P = 0.003, Fisher's exact test). Nine of 62 African–American children (15%) on antipsychotics exhibited dyskinesia, when compared with only 4% (2 of 52) of European–American children (P = 0.003, Fisher's exact test). Children treated with antipsychotic drugs might experience a significant risk of dyskinesia even when treated only with atypical antipsychotics. Ethnicity might also be a risk factor for dyskinesia in children. Side‐effect profile of the atypical antipsychotic drugs in children may be much different than that in adults. © 2007 Movement Disorder Society 相似文献
2.
3.
4.
IntroductionPrevious investigation from UK sexual health clinics has suggested that men from Central Asian and Middle Eastern backgrounds are more likely to present with premature ejaculation (PE) than men from Western backgrounds. This interesting finding requires replication, especially in populations from other countries.AimThe current study aimed to determine whether men who had sought treatment for PE from a community sexual health clinic were more likely to come from Central Asian and Middle Eastern backgrounds than from Western backgrounds.Main Outcome MeasuresDemographic and clinical data were collected retrospectively from patient files over a 3-year period. Patient-defined ethnicity for outpatients seeking psychological interventions for PE was compared to the ethnicity of those attending for other sexual dysfunctions and also to local population census data.MethodClinical files for 215 men seeking psychological interventions for sexual dysfunctions at an urban sexual health clinic in Sydney were examined. Men were included in the study if they reported being born in one of two regional groups: Western countries or Middle Eastern/Central Asian countries. The rates of men seeking help for PE vs. other sexual dysfunctions were compared between these two regional groups and were compared with the representation of each region in the broader sexual health service as well as the local population.ResultsRelative to men born in Western regions, men from Central Asian/Middle Eastern countries were more likely to present with PE than with other sexual dysfunctions. The proportion of men from Central Asian/Middle Eastern countries presenting with PE was considerably higher than expected for the population attending the sexual health clinic or the broader local community.ConclusionConsistent with previous research, Asian and Middle Eastern men living in a Western society appear to be more likely than Western men to report difficulties with PE. Frewen A, Rapee RM, Bowden P, and Lagios K. Regional differences in men attending a sexual health clinic in Sydney for premature ejaculation. 相似文献
5.
Ahmed Fazly Charu Jain Amie C. Dehner Luca Issi Elizabeth A. Lilly Akbar Ali Hong Cao Paul L. Fidel Jr. Reeta P. Rao Paul D. Kaufman 《Proceedings of the National Academy of Sciences of the United States of America》2013,110(33):13594-13599
Infection by pathogenic fungi, such as Candida albicans, begins with adhesion to host cells or implanted medical devices followed by biofilm formation. By high-throughput phenotypic screening of small molecules, we identified compounds that inhibit adhesion of C. albicans to polystyrene. Our lead candidate compound also inhibits binding of C. albicans to cultured human epithelial cells, the yeast-to-hyphal morphological transition, induction of the hyphal-specific HWP1 promoter, biofilm formation on silicone elastomers, and pathogenesis in a nematode infection model as well as alters fungal morphology in a mouse mucosal infection assay. We term this compound filastatin based on its strong inhibition of filamentation, and we use chemical genetic experiments to show that it acts downstream of multiple signaling pathways. These studies show that high-throughput functional assays targeting fungal adhesion can provide chemical probes for study of multiple aspects of fungal pathogenesis. 相似文献
6.
The cytotoxicity and genotoxicity of soluble and particulate cobalt in human lung epithelial cells 下载免费PDF全文
Hong Xie Leah J. Smith Amie L. Holmes Tongzhang Zheng John Pierce Wise Sr. 《Environmental and molecular mutagenesis》2016,57(4):282-287
Cobalt is a toxic metal used in various industrial applications leading to adverse lung effects by inhalation. Cobalt is considered a possible human carcinogen with the lung being a primary target. However, few studies have considered cobalt‐induced toxicity in human lung cells, especially normal lung epithelial cells. Therefore, in this study, we sought to determine the cytotoxicity and genotoxicity of particulate and soluble cobalt in normal primary human lung epithelial cells. Cobalt oxide and cobalt chloride were used as representative particulate and soluble cobalt compounds, respectively. Exposure to both particulate and soluble cobalt induced a concentration‐dependent increase in cytotoxicity, genotoxicity, and intracellular cobalt ion levels. Based on intracellular cobalt ion levels, we found that soluble and particulate cobalt induced similar cytotoxicity while soluble cobalt was more genotoxic than particulate cobalt. These data indicate that cobalt compounds are cytotoxic and genotoxic to human lung epithelial cells. Environ. Mol. Mutagen. 57:282–287, 2016. © 2016 Wiley Periodicals, Inc. 相似文献
7.
8.
David J. Tester Leonie C.H. Wong Pritha Chanana Amie Jaye Jared M. Evans David R. FitzPatrick Margaret J. Evans Peter Fleming Iona Jeffrey Marta C. Cohen Jacob Tfelt-Hansen Michael A. Simpson Elijah R. Behr Michael J. Ackerman 《Journal of the American College of Cardiology》2018,71(11):1217-1227
Background
Sudden infant death syndrome (SIDS) is a leading cause of postneonatal mortality. Genetic heart diseases (GHDs) underlie some cases of SIDS.Objectives
This study aimed to determine the spectrum and prevalence of GHD-associated mutations as a potential monogenic basis for SIDS.Methods
A cohort of 419 unrelated SIDS cases (257 male; average age 2.7 ± 1.9 months) underwent whole exome sequencing and a targeted analysis of 90 GHD-susceptibility genes. The yield of “potentially informative,” ultra-rare variants (minor allele frequency <0.00005) in GHD-associated genes was assessed.Results
Overall, 53 of 419 (12.6%) SIDS cases had ≥1 “potentially informative,” GHD-associated variant. The yield was 14.9% (21 of 141) for mixed-European ancestry cases and 11.5% (32 of 278) for European ancestry SIDS cases. Infants older than 4 months were more likely to host a “potentially informative” GHD-associated variant. There was significant overrepresentation of ultra-rare nonsynonymous variants in European SIDS cases (18 of 278 [6.5%]) versus European control subjects (30 of 973 [3.1%]; p = 0.013) when combining all 4 major cardiac channelopathy genes (KCNQ1, KCNH2, SCN5A, and RYR2). According to the American College of Medical Genetics guidelines, only 18 of 419 (4.3%) SIDS cases hosted a “pathogenic” or “likely pathogenic” variant.Conclusions
Less than 15% of more than 400 SIDS cases had a “potentially informative” variant in a GHD-susceptibility gene, predominantly in the 4- to 12-month age group. Only 4.3% of cases possessed immediately clinically actionable variants. Consistent with previous studies, ultra-rare, nonsynonymous variants within the major cardiac channelopathy-associated genes were overrepresented in SIDS cases in infants of European ethnicity. These findings have major implications for the investigation of SIDS cases and families. 相似文献9.
Amie J. Dirks-Naylor Nicholas J.D. Wright Gregory L. Alston 《American journal of pharmaceutical education》2015,79(6)
Objective. To design and assess a horizontally integrated biological sciences course sequence and to determine its effectiveness in imparting the foundational science knowledge necessary to successfully progress through the pharmacy school curriculum and produce competent pharmacy school graduates.Design. A 2-semester course sequence integrated principles from several basic science disciplines: biochemistry, molecular biology, cellular biology, anatomy, physiology, and pathophysiology. Each is a 5-credit course taught 5 days per week, with 50-minute class periods.Assessment. Achievement of outcomes was determined with course examinations, student lecture, and an annual skills mastery assessment. The North American Pharmacist Licensure Examination (NAPLEX) results were used as an indicator of competency to practice pharmacy.Conclusion. Students achieved course objectives and program level outcomes. The biological sciences integrated course sequence was successful in providing students with foundational basic science knowledge required to progress through the pharmacy program and to pass the NAPLEX. The percentage of the school’s students who passed the NAPLEX was not statistically different from the national percentage. 相似文献
10.
Managing the pain of labour: factors associated with the use of labour pain management for pregnant Australian women 下载免费PDF全文
Amie Steel MPH Grad Cert Ed BHSc Jon Adams PhD MA BA David Sibbritt PhD MMedStats BMath Alex Broom PhD MA BA Cindy Gallois PhD MA BS FASSA MAPsS Jane Frawley MClSci GradCertAppSc BHSc 《Health expectations》2015,18(5):1633-1644