全文获取类型
收费全文 | 645篇 |
免费 | 53篇 |
国内免费 | 1篇 |
专业分类
儿科学 | 29篇 |
妇产科学 | 35篇 |
基础医学 | 78篇 |
口腔科学 | 31篇 |
临床医学 | 71篇 |
内科学 | 138篇 |
皮肤病学 | 6篇 |
神经病学 | 71篇 |
特种医学 | 10篇 |
外科学 | 35篇 |
综合类 | 2篇 |
预防医学 | 92篇 |
眼科学 | 20篇 |
药学 | 33篇 |
肿瘤学 | 48篇 |
出版年
2023年 | 8篇 |
2022年 | 16篇 |
2021年 | 20篇 |
2020年 | 7篇 |
2019年 | 21篇 |
2018年 | 23篇 |
2017年 | 16篇 |
2016年 | 14篇 |
2015年 | 27篇 |
2014年 | 27篇 |
2013年 | 40篇 |
2012年 | 58篇 |
2011年 | 48篇 |
2010年 | 35篇 |
2009年 | 24篇 |
2008年 | 45篇 |
2007年 | 55篇 |
2006年 | 55篇 |
2005年 | 37篇 |
2004年 | 36篇 |
2003年 | 30篇 |
2002年 | 16篇 |
2001年 | 1篇 |
2000年 | 1篇 |
1999年 | 2篇 |
1998年 | 9篇 |
1997年 | 5篇 |
1996年 | 1篇 |
1994年 | 1篇 |
1993年 | 3篇 |
1991年 | 3篇 |
1990年 | 1篇 |
1987年 | 3篇 |
1982年 | 1篇 |
1967年 | 1篇 |
1966年 | 1篇 |
1963年 | 1篇 |
1960年 | 1篇 |
1944年 | 1篇 |
1943年 | 2篇 |
1938年 | 2篇 |
1935年 | 1篇 |
排序方式: 共有699条查询结果,搜索用时 15 毫秒
101.
Kendall AP Kautz MA Russo MB Killgore WD 《The International journal of neuroscience》2006,116(10):1125-1138
Sleep loss temporarily impairs vigilance and sustained attention. Because these cognitive abilities are believed to be mediated predominantly by the right cerebral hemisphere, this article hypothesized that continuous sleep deprivation results in a greater frequency of inattention errors within the left versus right visual fields. Twenty-one participants were assessed several times each day during a 40-h period of sustained wakefulness and following a night of recovery sleep. At each assessment, participants engaged in a continuous serial addition task while simultaneously monitoring a 150 degrees visual field for brief intermittent flashes of light. Overall, omission errors were most common in the leftmost peripheral field for all sessions, and did not show any evidence of a shift in laterality as a function of sleep deprivation. Relative to rested baseline and postrecovery conditions, sleep deprivation resulted in a global increase in omission errors across all visual locations and a general decline in serial addition performance. These findings argue against the hypothesis that sleep deprivation produces lateralized deficits in attention and suggest instead that deficits in visual attention produced by sleep deprivation are global and bilateral in nature. 相似文献
102.
M. Gerald Ott Athena T. Jolly Amy L. Burkert William E. Brown 《Critical reviews in toxicology》2013,43(7):567-585
Diisocyanates are used to produce a wide variety of polyurethane products; they are also recognized as an important cause of occupational asthma. Their chemical reactivity presents challenges to toxicologists and clinicians alike seeking to understand the mechanisms underlying diisocyanate asthma. In this article, we review the literature on immunoassay detection of IgE and IgG binding to diisocyanate–protein conjugates and assess the utility of such testing as a diagnostic tool and exposure indicator. Data from 29 studies of occupational exposure to diisocyanates revealed considerable variability in assay methodology and heterogeneity in the prevalence of positive antibody responses across laboratories. In studies that included both confirmed diisocyanate asthma subjects and exposed nonasthmatics, positive IgE responses identified cases with low sensitivity (18–27%), but high specificity (96–98%). Detection of IgG binding to diisocyanate conjugates is an indirect, qualitative indicator of disease status and past diisocyanate exposure. The utility of these assays is limited, however, due to a lack of (1) method standardization, (2) population norms to guide interpretation of results, and (3) demonstration that the assays improve either on disease prediction or on exposure confirmation beyond that of other indicators. Sources of assay heterogeneity are discussed and suggestions are offered for improving test performance and interpretability. 相似文献
103.
Carol Di Perri Aurore Thibaut Lizette Heine Andrea Soddu Athena Demertzi Steven Laureys 《World journal of radiology》2014,6(8):589-597
Consciousness is a prismatic and ambiguous concept that still eludes any universal definition. Severe acquired brain injuries resulting in a disorder of consciousness (DOC) provide a model from which insights into consciousness can be drawn. A number of recent studies highlight the difficulty in making a diagnosis in patients with DOC based only on behavioral assessments. Here we aim to provide an overview of how neuroimaging techniques can help assess patients with DOC. Such techniques are expected to facilitate a more accurate understanding of brain function in states of unconsciousness and to improve the evaluation of the patient’s cognitive abilities by providing both diagnostic and prognostic indicators. 相似文献
104.
Processing the vocalizations of conspecifics is critical for adaptive social interaction. A species-specific voice-selective region has been identified in the right STS that responds more strongly to human vocal sounds compared with a variety of nonvocal sounds. However, the STS also activates in response to a wide range of signals used in communication, such as eye gaze, biological motion, and speech. These findings raise the possibility that the voice-selective region of the STS may be especially sensitive to vocal sounds that are communicative, rather than to all human vocal sounds. Using fMRI, we demonstrate that the voice-selective region of the STS responds more strongly to communicative vocal sounds (such as speech and laughter) compared with noncommunicative vocal sounds (such as coughing and sneezing). The implications of these results for understanding the role of the STS in voice processing and in disorders of social communication, such as autism spectrum disorder, are discussed. 相似文献
105.
Sarah J. Welsh Nicola Thompson Anne Warren Andrew N. Priest Tristan Barrett Stephan Ursprung Ferdia A. Gallagher Fulvio Zaccagna Grant D. Stewart Kate M. Fife Athena Matakidou Andrea J. Machin Wendi Qian Victoria Ingleson Jean Mullin Antony C. P. Riddick James N. Armitage Stephen Connolly Timothy G. Q. Eisen 《BJU international》2022,130(2):244-253
106.
107.
David Whiley Ella Trembizki Cameron Buckley Kevin Freeman Andrew Lawrence Athena Limnios Julie Pearson Helen Smith Kerrie Stevens Monica M. Lahra 《Antimicrobial agents and chemotherapy》2014,58(12):7576-7578
Penicillinase-producing Neisseria gonorrhoeae (PPNG) carrying the blaTEM-135 gene is of particular concern, as it is considered a stepping stone toward resistance to extended-spectrum cephalosporins. Here, we sought to characterize plasmid types and the occurrence of the blaTEM-135 gene for N. gonorrhoeae clinical isolates from Australia. We found that blaTEM-135 was prevalent in Australian PPNG and was detected on all three major plasmid types. 相似文献
108.
109.
Effect of Postnatal HIV Treatment on Clinical Mastitis and Breast Inflammation in HIV‐Infected Breast‐feeding Women
下载免费PDF全文
![点击此处可从《Paediatric and perinatal epidemiology》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Sabrina Zadrozny Daniel Westreich Michael G. Hudgens Charles Chasela Denise J. Jamieson Francis Martinson Chifundo Zimba Gerald Tegha Irving Hoffman William C. Miller Brian W. Pence Caroline C. King Athena P. Kourtis Wezi Msungama Charles van der Horst the BAN Study Team 《Paediatric and perinatal epidemiology》2017,31(2):134-143
110.
Linh?Truong John?Tat Molly?Booy Annie?Le Jeanne?Marie?Marasigan Christine?Yuan Athena?Zeng Anand?Panchal Georgia?Robins?SadlerEmail author 《Journal of cancer education》2016,31(2):292-300
Operating since 1994, the UCSD Moores Cancer Center’s Asian Grocery Store-Based Cancer Education Program (the Program) is a proven and sustainable strategy for disseminating cancer and poison control information to Asian and Pacific Islander (API) communities. This paper describes the process taken to identify health topics that can be readily addressed within the Program’s infrastructure and reports results of the pilot testing of the educational module that was developed by following that process. The development of each new module is guided by the Health Belief Model and the Tipping Point Model. The process starts with the selection of a health topic demonstrating pressing need and treatment options in the API community. Then, using the Pareto principle, reasonably modifiable risk factors are chosen to be addressed in the module. “Sticky messaging” for the modifiable risk factors is developed to package the health information as memorable and transmissible calls-to-action. Finally, grocery store outreaches were used to pilot test the new module to assess its effectiveness at facilitating health care information to API community members. By adhering to the steps described in this paper, the authors were able to: (1) select liver cancer as a pressing API health issue that could be positively impacted by the Program; (2) identify reasonably modifiable risk factors for the chosen health issue; (3) generate compelling call-to-action messages to decrease risk of exposure; and (4) demonstrate the cultural and linguistic alignment of the liver cancer control module. The development and testing of new health education modules follow a methodical process guided by scientific principles. Understanding and employing the elements of an existing evidence-based and sustainable health education program can increase the likelihood of success in addressing the health needs of the API community. 相似文献