全文获取类型
收费全文 | 236343篇 |
免费 | 53234篇 |
国内免费 | 9871篇 |
学科分类
医药卫生 | 299448篇 |
出版年
2024年 | 418篇 |
2023年 | 2290篇 |
2022年 | 5747篇 |
2021年 | 8523篇 |
2020年 | 10056篇 |
2019年 | 15413篇 |
2018年 | 14991篇 |
2017年 | 15695篇 |
2016年 | 16066篇 |
2015年 | 18132篇 |
2014年 | 19654篇 |
2013年 | 19729篇 |
2012年 | 15456篇 |
2011年 | 16443篇 |
2010年 | 16294篇 |
2009年 | 11077篇 |
2008年 | 10487篇 |
2007年 | 9266篇 |
2006年 | 9411篇 |
2005年 | 9056篇 |
2004年 | 6576篇 |
2003年 | 6223篇 |
2002年 | 5480篇 |
2001年 | 5018篇 |
2000年 | 4924篇 |
1999年 | 4556篇 |
1998年 | 2738篇 |
1997年 | 2620篇 |
1996年 | 1934篇 |
1995年 | 1792篇 |
1994年 | 1563篇 |
1993年 | 1047篇 |
1992年 | 1648篇 |
1991年 | 1463篇 |
1990年 | 1231篇 |
1989年 | 1058篇 |
1988年 | 957篇 |
1987年 | 880篇 |
1986年 | 667篇 |
1985年 | 619篇 |
1984年 | 363篇 |
1983年 | 254篇 |
1982年 | 159篇 |
1981年 | 173篇 |
1980年 | 115篇 |
1979年 | 178篇 |
1978年 | 116篇 |
1976年 | 86篇 |
1975年 | 91篇 |
1974年 | 105篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
Very preterm children are at increased risk of reduced processing speed at 5 years of age,predicted by typical complications of prematurity and prenatal smoking 下载免费PDF全文
5.
Jae Eun Choi Tyler Werbel Zhenping Wang Chia Chi Wu Tony L. Yaksh Anna Di Nardo 《Journal of dermatological science》2019,93(1):58-64
Background
Rosacea is a chronic inflammatory skin condition whose etiology has been linked to mast cells and the antimicrobial peptide cathelicidin LL-37. Individuals with refractory disease have demonstrated clinical benefit with periodic injections of onabotulinum toxin, but the mechanism of action is unknown.Objectives
To investigate the molecular mechanism by which botulinum toxin improves rosacea lesions.Methods
Primary human and murine mast cells were pretreated with onabotulinum toxin A or B or control. Mast cell degranulation was evaluated by β-hexosaminidase activity. Expression of botulinum toxin receptor Sv2 was measured by qPCR. The presence of SNAP-25 and VAMP2 was established by immunofluorescence. In vivo rosacea model was established by intradermally injecting LL-37 with or without onabotulinum toxin A pretreatment. Mast cell degranulation was assessed in vivo by histologic counts. Rosacea biomarkers were analyzed by qPCR of mouse skin sections.Results
Onabotulinum toxin A and B inhibited compound 48/80-induced degranulation of both human and murine mast cells. Expression of Sv2 was established in mouse mast cells. Onabotulinum toxin A and B increased cleaved SNAP-25 and decreased VAMP2 staining in mast cells respectively. In mice, injection of onabotulinum toxin A significantly reduced LL-37-induced skin erythema, mast cell degranulation, and mRNA expression of rosacea biomarkers.Conclusions
These findings suggest that onabotulinum toxin reduces rosacea-associated skin inflammation by directly inhibiting mast cell degranulation. Periodic applications of onabotulinum toxin may be an effective therapy for refractory rosacea and deserves further study. 相似文献6.
7.
Fur-Hsing Wen Jen-Shi Chen Wen-Chi Chou Wen-Cheng Chang Wen Chi Shen Chia-Hsun Hsieh Siew Tzuh Tang 《Journal of pain and symptom management》2019,57(1):64-72
Context
Family caregivers constitute a critical component of the end-of-life care system with considerable cost to themselves. However, the joint association of terminally ill cancer patients' symptom distress and functional impairment with caregivers' subjective caregiving burden, quality of life (QOL), and depressive symptoms remains unknown.Objectives/Methods
We used multivariate hierarchical linear modeling to simultaneously evaluate associations between five distinct patterns of conjoint symptom distress and functional impairment (symptom-functional states) and subjective caregiving burden, QOL, and depressive symptoms in a convenience sample of 215 family caregiver–patient dyads. Data were collected every 2 to 4 weeks over patients' last 6 months.Results
Caregivers of patients in the worst symptom-functional states (States 3–5) reported worse subjective caregiving burden and depressive symptoms than those in the best two states, but the three outcomes did not differ between caregivers of patients in State 3 and States 4–5. Caregivers of patients in State 5 endured worse subjective caregiving burden and QOL than those in State 4. Caregivers of patients in State 4 suffered worse subjective caregiving burden and depressive symptoms but comparable QOL to those in State 2.Conclusion
Patients' five distinct, conjoint symptom-functional states were significantly and differentially associated with their caregivers' worse subjective caregiving burden, QOL, and depressive symptoms while caring for patients over their last 6 months. 相似文献8.
9.
10.
全国名中医天津中医药大学第一附属医院针灸科武连仲教授用多年的临床经验总结概括出针刺的理、法、方、穴、术,其创立的"通经止痛"针刺疗法在临床中疗效佳,武老在治疗坐骨神经痛时,取足太阳膀胱经和足少阳胆经具有走窜针感的经穴为主穴,其配伍精确,组方严密,手法独特,可供临床参考。本文将武老运用"痛经止痛"针刺法治疗坐骨神经痛的经验从"理、法、方、穴、术"方面做浅述。 相似文献