首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   1242篇
  免费   63篇
  国内免费   5篇
耳鼻咽喉   24篇
儿科学   9篇
妇产科学   16篇
基础医学   56篇
口腔科学   43篇
临床医学   311篇
内科学   23篇
皮肤病学   62篇
神经病学   24篇
特种医学   30篇
外科学   237篇
综合类   124篇
预防医学   142篇
眼科学   42篇
药学   76篇
  10篇
中国医学   33篇
肿瘤学   48篇
  2024年   8篇
  2023年   59篇
  2022年   30篇
  2021年   62篇
  2020年   72篇
  2019年   55篇
  2018年   59篇
  2017年   32篇
  2016年   54篇
  2015年   49篇
  2014年   94篇
  2013年   86篇
  2012年   65篇
  2011年   91篇
  2010年   43篇
  2009年   69篇
  2008年   64篇
  2007年   70篇
  2006年   40篇
  2005年   37篇
  2004年   25篇
  2003年   17篇
  2002年   16篇
  2001年   7篇
  2000年   10篇
  1999年   8篇
  1998年   9篇
  1997年   10篇
  1996年   12篇
  1995年   5篇
  1994年   7篇
  1993年   1篇
  1992年   4篇
  1991年   2篇
  1990年   2篇
  1989年   1篇
  1988年   1篇
  1987年   4篇
  1986年   2篇
  1985年   7篇
  1984年   4篇
  1983年   4篇
  1982年   2篇
  1980年   4篇
  1979年   2篇
  1977年   1篇
  1976年   1篇
  1973年   1篇
  1972年   1篇
  1970年   1篇
排序方式: 共有1310条查询结果,搜索用时 125 毫秒
1.
2.
3.
4.
The present study deals with the evaluation of antiaging potential of carrot seed oil-based cosmetic emulsions. Briefly, cosmetic emulsions composed of carrot seed oil in varying proportions (2, 4, and 6% w/v) were prepared using the hydrophile–lipophile balance (HLB) technique. Coconut oil, nonionic surfactants (Tween 80 and Span 80), and xanthan gum were used as the oil phase, emulgent, and emulsion stabilizer, respectively. The formed emulsions were evaluated for various physical, chemical, and biochemical parameters such as the zeta potential, globule size measurement, antioxidant activity, sun protection factor (SPF), skin irritation, and biochemical studies. The zeta potential values ranged from ?43.2 to ?48.3, indicating good stability. The polydispersity index (PDI) of various emulsion formulations ranged from 0.353 to 0.816. 1,1-Diphenyl-2-picrylhydrazyl- (DPPH) and nitric oxide-free radical scavenging activity showed the antioxidant potential of the prepared carrot seed oil emulsions. The highest SPF value (6.92) was shown by F3 having 6%w/v carrot seed oil. Histopathological data and biochemical analysis (ascorbic acid (ASC) and total protein content) suggest that these cosmetic emulsions have sufficient potential to be used as potential skin rejuvenating preparations.  相似文献   
5.
目的探讨eCASH理念结合早期活动在ICU机械通气患者中的应用效果。方法将96例ICU机械通气患者按入院时间分为对照组和观察组各48例,对照组给予常规镇痛镇静及护理,观察组实施基于eCASH理念的舒适化浅镇静管理结合早期活动。结果观察组谵妄发生率和ICU获得性衰弱发生率显著低于对照组,MRC肌力评分显著高于对照组,机械通气时间和ICU住院天数显著短于对照组(P0.05,P0.01)。结论 eCASH理念结合早期活动应用于ICU机械通气患者,可降低患者谵妄和ICU获得性衰弱,缩短机械通气和ICU入住时间,促进患者康复。  相似文献   
6.
7.
目的评价舒适护理在妊娠合并症患者中的效果。方法选取本院2017年1月-2018年10月收治的妊娠合并症患者60例,将其随机分为两组,各30例。对照组实施常规护理,基于此观察组实施舒适护理。比较两组妊娠合并症发生情况及满意度。结果在妊娠合并症方面,观察组发生率为6.67%较对照组33.33%明显更低,且P<0.05。在满意度方面,观察组为96.67%较对照组70.00%明显更高,且P<0.05。结论舒适护理在妊娠合并症患者中的效果显著,即可有效减少患者合并症,且能提升其满意度。  相似文献   
8.
AimThe aim of this study was to examine the effect of a water-friendly Projector-Based Hybrid Virtual Reality (VR) dome environment combined with standard pharmacological treatment on pain in young children undergoing burn wound care in hydrotherapy.MethodsThis study was a prospective, within-subject crossover trial of 38 children aged 6 months to 7 years old (mean age = 1.8 years old). Each hydrotherapy procedure was divided into two equivalent wound care segments (No hybrid VR during one segment vs. Hybrid VR during the other segment, treatment order was randomized). Pain was measured using the 0–10 FLACC (Face, Legs, Activity, Cry Consolability scale) and the 0–10 NRS-obs (Numerical Rating Scale-obs).ResultsProjector-Based Hybrid VR significantly reduced procedural pain levels measured by the FLACC (p = 0.026) and significantly increased patients' comfort levels (p = 0.002). Patients' pain levels rated by the nurses using the NRS-obs were non-significant between both groups (p = 0.135). No side effects were reported.ConclusionProjector-Based Hybrid VR helped in reducing the pain related to hydrotherapy procedures in young children with burn wound injuries. This is the first study using virtual reality distraction with young children, and our findings are especially important because a large percentage of pediatric burn patients are very young. Additional research and development are recommended.Trial registrationClinicalTrials.gov, NCT02986464, registered on June 12, 2016.  相似文献   
9.
IntroductionPoor genital self-image is a common phenomenon leading to an increasing interest in female genital surgery over the last years.AimThe aim was to correlate objective measurements of the labia minora with the individual subjective perception of the labial size.MethodsIn a cross-sectional study with 200 premenopausal women (median age 33.5 years) presenting for gynecological issues other than vulvar diseases, labial width and length were measured, and psychological and physical complaints were assessed. Multivariable logistic regression analyses were performed to identify factors that influenced self-reported complaints and subjective perception of labia size.Main Outcome MeasureThe main outcome measure was labial appearance (width and length in mm, color), subjective perception of the labial size, and complaints.ResultsThe median width of the labia minora was 19.0 mm (interquartile range = 12.6–27.5), and the median length was 35.5 mm (interquartile range = 27.8–48.9). The objective size of the labia was significantly associated with womens' subjective perception of the labial size, but not with self-reported complaints. Nearly one-third of the women (n = 53, 27%) reported complaints of their labia minora which were mainly physical (n = 41, 77%) or a combination of physical and psychological problems (n = 9, 17%), while only a small group reported experiencing only psychological complaints (n = 3, 6%). Predictors of complaints were previous cosmetic surgery and the subjective perception of the labia size. The latter was significantly associated with discomfort during intercourse and when visiting a sauna and by labia minora that protruded over the labia majora.Clinical ImplicationsCutoff values to define labial hypertrophy and to justify labial reduction surgery should be avoided.Strength & LimitationsThis is a large sample of labial measurements in women not seeking labiaplasty. Standardized and validated questions regarding quality of life, sexuality, and body image could have provided more insight into psychological aspects.ConclusionThese data demonstrate the variability of labial anatomy and its perception.Widschwendter A, Riedl D, Freidhager K, et al. Perception of Labial Size and Objective Measurements-Is There a Correlation? A Cross-Sectional Study in a Cohort Not Seeking Labiaplasty. J Sex Med 2020;17:461–469.  相似文献   
10.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号