全文获取类型
收费全文 | 1881篇 |
免费 | 122篇 |
国内免费 | 2篇 |
专业分类
耳鼻咽喉 | 33篇 |
儿科学 | 104篇 |
妇产科学 | 38篇 |
基础医学 | 191篇 |
口腔科学 | 9篇 |
临床医学 | 279篇 |
内科学 | 337篇 |
皮肤病学 | 39篇 |
神经病学 | 121篇 |
特种医学 | 18篇 |
外科学 | 221篇 |
综合类 | 19篇 |
一般理论 | 1篇 |
预防医学 | 219篇 |
眼科学 | 39篇 |
药学 | 110篇 |
中国医学 | 8篇 |
肿瘤学 | 219篇 |
出版年
2023年 | 9篇 |
2022年 | 7篇 |
2021年 | 40篇 |
2020年 | 17篇 |
2019年 | 35篇 |
2018年 | 34篇 |
2017年 | 31篇 |
2016年 | 35篇 |
2015年 | 43篇 |
2014年 | 58篇 |
2013年 | 102篇 |
2012年 | 136篇 |
2011年 | 140篇 |
2010年 | 81篇 |
2009年 | 81篇 |
2008年 | 123篇 |
2007年 | 147篇 |
2006年 | 147篇 |
2005年 | 143篇 |
2004年 | 123篇 |
2003年 | 113篇 |
2002年 | 108篇 |
2001年 | 20篇 |
2000年 | 9篇 |
1999年 | 15篇 |
1998年 | 27篇 |
1997年 | 12篇 |
1996年 | 17篇 |
1995年 | 13篇 |
1994年 | 13篇 |
1993年 | 14篇 |
1992年 | 4篇 |
1991年 | 5篇 |
1990年 | 9篇 |
1989年 | 9篇 |
1988年 | 5篇 |
1987年 | 11篇 |
1986年 | 8篇 |
1985年 | 4篇 |
1984年 | 7篇 |
1983年 | 3篇 |
1982年 | 7篇 |
1981年 | 9篇 |
1980年 | 3篇 |
1978年 | 6篇 |
1977年 | 7篇 |
1975年 | 3篇 |
1974年 | 3篇 |
1971年 | 2篇 |
1965年 | 2篇 |
排序方式: 共有2005条查询结果,搜索用时 16 毫秒
1.
In this study we consider the process of the clinical encounter, and present exemplars of how assumptions of both clinicians and their patients can shift or transform in the course of a diagnostic interview. We examine the process as it is recalled, and further elaborated, in post-diagnostic interviews as part of a collaborative inquiry during reflections with clinicians and patients in the northeastern United States. Rather than treating assumptions by patients and providers as a fixed attribute of an individual, we treat them as occurring between people within a particular social context, the diagnostic interview. We explore the diagnostic interview as a landscape in which assumptions occur (and can shift), navigate the features of this landscape, and suggest that our examination can best be achieved by the systematic comparison of views of the multiple actors in an experience-near manner. We describe what might be gained by this shift in assumptions and how it can make visible what is at stake for clinician and patient in their local moral worlds—for patients, acknowledgment of social suffering, for clinicians how assumptions are a barrier to engagement with minority patients. It is crucial for clinicians to develop this capacity for reflection when navigating the interactions with patients from different cultures, to recognize and transform assumptions, to notice ‘surprises’, and to elicit what really matters to patients in their care. 相似文献
2.
3.
PURPOSE: The change/no-change procedure (J. E. Sussman & A. E. Carney, 1989), which assesses speech discrimination, has been used under the assumption that the number of stimulus presentations does not influence performance. Motivated by the tenets of the multiple looks hypothesis (N. F. Viemeister & G. H. Wakefield, 1991), work by R. F. Holt and A. E. Carney (2005) called this assumption into question (at least for adults): Nonsense syllable discrimination improved with more stimulus presentations. This study investigates the nature of developmental differences and the effects of multiple stimulus presentations in the change/no-change procedure. METHOD: Thirty normal-hearing children, ages 4.0-5.9 years, were tested on 3 consonant-vowel contrasts at various signal-to-noise ratios using combinations of 2 and 4 standard and comparison stimulus repetitions. RESULTS: Although performance fell below that which is predicted by the multiple looks hypothesis in most conditions, discrimination was enhanced with more stimulus repetitions for 1 speech contrast. The relative influence of standard and comparison stimulus repetitions varied across the speech contrasts in a manner different from that of adults. CONCLUSION: Despite providing no additional sensory information, multiple stimulus repetitions enhanced children's discrimination of 1 set of nonsense syllables. The results have implications for models of developmental speech perception and assessing speech discrimination in children. 相似文献
4.
5.
Kim Mudd Mary Elizabeth Bollinger Van Doren Hsu Michele Donithan Arlene Butz 《The Journal of asthma》2006,43(8):597-600
Background. Medication adherence impacts healthcare utilization. Pharmacy records are useful to establish fill patterns. Objective. Use pharmacy records to establish medication patterns fill patterns for comparison to healthcare utilization. Methods. Pharmacy records of 175 children with persistent asthma were collected and compared to healthcare utilization. Results. Majority of subjects had significant healthcare utilization, low numbers of rescue medications, and poor controller medication fill rates. Those with more rescue medications had more healthcare utilization and more controller medications. Conclusions. Pharmacy fill patterns demonstrate few rescue and/or controller medication fills. Those with more rescue medications reported increased healthcare utilization despite controller medications. 相似文献
6.
Alfred S. Friedman Samuel Granick Cheryl Kreisher Arlene Terras 《The American journal on addictions / American Academy of Psychiatrists in Alcoholism and Addictions》1993,2(3):232-237
This “matching” study attempts to determine characteristics of adolescent drug abuse patients that may determine whether an inpatient or an outpatient treatment setting will be more effective or more suitable for meeting the needs of the patient. Compared to short-term inpatient treatment, long-term outpatient treatment was shown to have significantly greater effect in reducing substance use/abuse for patients who had relatively more severe social lifestyle problems, family problems, and employment problems. Outpatient treatment even showed a trend toward a significantly better outcome for patients with more severe psychiatric problems. 相似文献
7.
Arlene S. King William J. Threlfall Pierre R. Band Richard P. Gallagher 《American journal of industrial medicine》1994,26(1):125-132
The mortality profile of female nurses and teachers in British Columbia (BC) was examined using age-standardized proportional mortality ratios (PMRs) calculated for the period 1950–1984. Lowered overall mortality among nurses was seen for degenerative heart disease and for cerebrovascular accidents. Significantly elevated PMR values were observed for cancer of the breast and ovary in nurses of age 20–65 years. PMRs were significantly elevated for cancer of the pancreas and leukemia among those age 20 years and older. Elevated values were also observed for motor vehicle accidents and suicide among nurses in both age groups. Lower than expected mortality from degenerative heart disease and cerebrovascular accidents was seen in working age teachers (age 20–65 years). However, elevated PMRs were detected for carcinoma of the colon, breast, endometrium, brain, and melanoma. Among those 20 years and over, significantly elevated PMRs were also observed for cancers of the ovary and other digestive organs. Elevated PMRs were found for motor vehicle and aircraft accidents. Mortality from cirrhosis of the liver was lower than anticipated in both teachers and nurses. A number of significant PMRs declined when deaths of “homemakers” were withdrawn from the comparison group used to generate PMR values, suggesting that risk of death from various causes among women working outside the home differ from those seen in women who are predominantly in the home. 相似文献
8.
Jeffrey W. Gray Arlene I. Rattan Raymond S. Dean 《Archives of clinical neuropsychology》1986,1(4):341-349
This study examined the utility of the Halstead-Reitan Neuropsychological Battery in the differential diagnosis of dementia, major depression, and general neurological impairment. Orthogonal contrasts between groups showed superior performance for depressives on most Halstead-Reitan subtests. Contrasts between organically impaired groups showed that these groups did not differ significantly (p >.05) on any of the Halstead-Reitan subtests. A step-wise discriminant analysis indicated that on the basis of neuropsychological variables alone, demented patients were differentiated from elderly depressed with clinical levels of accuracy. However, when neurologically impaired and demented patients were considered together in a single group reflecting organic impairment, hits increased dramatically. The results were discussed in terms of their implications for differentially diagnosing dementia and depression in the elderly. 相似文献
9.
10.
Weimin Sun Ben Anderson Joy Redman Aubrey Milunsky Arlene Buller Matthew J McGinniss Franklin Quan Arturo Anguiano Stephen Huang Feras Hantash Charles Strom 《Genetics in medicine》2006,8(6):339-345
PURPOSE: The study's purpose was to understand the molecular basis for different clinical phenotypes of the 5T variant, a tract of 5 thymidines in intron 8 of the cystic fibrosis transmembrane conductance regulator (CFTR) gene, which disrupts processing of CFTR mRNA and reduces synthesis from the corresponding CFTR alleles. METHOD: We analyzed the polymorphic TG dinucleotide repeat adjacent to the 5T variant in intron 8 and the codon 470 in exon 10. Patients selected for this study were positive for both the 5T variant and the major cystic fibrosis mutation, Delta F508. Almost all Delta F508 mutation alleles occur in a 10TG-9T-470M haplotype. Therefore, it is possible to determine the haplotype of the 5T variant in trans. RESULTS: Of the 74 samples analyzed, 41 (55%) were 11TG-5T-470M, 31 (42%) were 12TG-5T-470V, and 2 (3%) were 13TG-5T-470M. Of the 49 cases for which we had clinical information, 17.6% of females (6/34) and 66.7% of males (10/15) showed symptoms resembling atypical cystic fibrosis. The haplotype with the highest penetrance in females (42% or 5/12) and more than 80% (5/6) in males is 12TG-5T-470V. We also evaluated 12 males affected with congenital bilateral absence of vas deferens and positive for the 5T variant; 10 of 12 had the 12TG-5T-470V haplotype. CONCLUSION: Overall, the 5T variant has a milder clinical consequence than previously estimated in females. The clinical presentations of the 5T variant are associated with the 5T-12TG-470M haplotype. 相似文献