全文获取类型
收费全文 | 511篇 |
免费 | 42篇 |
国内免费 | 17篇 |
专业分类
耳鼻咽喉 | 3篇 |
儿科学 | 4篇 |
妇产科学 | 9篇 |
基础医学 | 11篇 |
口腔科学 | 1篇 |
临床医学 | 101篇 |
内科学 | 24篇 |
神经病学 | 4篇 |
特种医学 | 14篇 |
外科学 | 21篇 |
综合类 | 168篇 |
预防医学 | 35篇 |
眼科学 | 36篇 |
药学 | 54篇 |
3篇 | |
中国医学 | 71篇 |
肿瘤学 | 11篇 |
出版年
2024年 | 8篇 |
2023年 | 35篇 |
2022年 | 23篇 |
2021年 | 22篇 |
2020年 | 25篇 |
2019年 | 12篇 |
2018年 | 19篇 |
2017年 | 20篇 |
2016年 | 22篇 |
2015年 | 18篇 |
2014年 | 24篇 |
2013年 | 44篇 |
2012年 | 55篇 |
2011年 | 33篇 |
2010年 | 37篇 |
2009年 | 25篇 |
2008年 | 23篇 |
2007年 | 35篇 |
2006年 | 22篇 |
2005年 | 15篇 |
2004年 | 20篇 |
2003年 | 9篇 |
2002年 | 5篇 |
2001年 | 7篇 |
2000年 | 2篇 |
1999年 | 5篇 |
1998年 | 3篇 |
1995年 | 1篇 |
1994年 | 1篇 |
排序方式: 共有570条查询结果,搜索用时 0 毫秒
1.
Objective To investigate anethol trithione therapic efficiency on dry eye. Methods It was a prospective random double-blind controlled study. Eighty cases diagnosed dry eye in Ocular Surface Out-patient Clinic of Xiamen University Affiliated Xiamen Eye Center from 2006 to 2008 were divided into two groups: anethol trithione group and control group, 40 cases in each group. Every group was then divided into two subgroups: weak dry eye subgroup, middle and severe dry eye subgroup. All groups had been added with 0.05% refresh drops. All patients had been detected and evaluated by subjective symptoms of dry eye, visual acuity,corneal fluorescent staining(F1), break-up time(BUT) and Schirmer Ⅰ test (SⅠT) at pre-therapy and 3,7,28 d of post-therapy. All groups had been compared and analyzed by F test and sample mean difference (SMD) or median difference (MD) comparison between pre-therapy and post-therapy. Results Except of tear and red eye, the other subjective symptoms of dry eye, F1, BUT and SⅠT of weak dry eye subgroup of both groups had been improved at 7 d after therapy. Only those of middle and severe dry eye subgroup of anethol trithione group had been improved at 7 d after therapy compared with those of pre-therapy: SMD=0.96 (visual tiredness), 1.26 (dry and unsmooth sensation), 0.82 (foreign body sensation), 1.28 (burning sensation), 1.05 (photophobia), 1.48 ( pain ) ; MD=0.30 (visual acuity), 4.00 (F1) ,5.00 (BUT), 5.00 (SⅠT) [F=15.30 (visual tiredness), 15.68 (dry and unsmooth sensation ), 13.56 (foreign body sensation), 20. 91 ( burning sensation ), 18.90 (photophobia), 27.22 ( pain ), 10.54 (visual acuity), 188.21 (F1) ,261.76 (BUT) ,269.05 (SⅠT) ;P<0. 05]. Those of middle and severe dry eye subgroup of control group hadn't significantly been improved at 28 d after therapy: SMD=0.10 (visual tiredness) ,0.16 (dry and unsmooth sensation) ,0.09 (foreign body sensation) ,0.38 ( burning sensation ), 0.24(photophobia) ,0.36 (pain) ,0.23 (red eye) ; MD=0.10 (visual acuity) ,0.50(F1) ,0.50(BUT), 0.50(SⅠT) [F=1.76 (visual tiredness), 1.61 (dry and unsmooth sensation), 1.02 (foreign body sensation),2.39 (burning sensation), 2.42 (photophobia), 2.73 ( pain ), 2.55 ( red eye ), 1.46 ( visual acuity) ,2.35 (F1) ,2.90 (BUT) ,2.76 (SⅠT) ; P>0.05]. SⅠT of anethol trithione group had been improved more significantly after therapy (F=13.77, P<0.05). Conclusion Anethol trithione could significantly improve middle and severe dry eye patients' symptoms and signs whose lacrimal gland function survival and it has clinical application value. 相似文献
2.
老年食管裂孔疝的X线诊断——附18例分析 总被引:1,自引:0,他引:1
目的 总结分析老年食管裂孔疝的X线诊断方法及其影像特征。方法 对18例老年食管裂孔疝患者分别进行上消化道钡餐透视和胸部平片检查,并就其X线诊断结果及影像特征作回顾性分析。结果 本组18例,钡餐透视检查阳性16例,阳性率88.9%,胸部平片检查15例,阳性3例,阳性率20.0%。其中,可复性裂孔疝6例,占33.3%,不可复性裂孔疝12例,占66.7%。结论 胸部平片检查简便易行,但阳性率低;钡餐透视检查阳性率高,其X线表现具有特征性,对老年食管裂孔疝的诊断具有重要意义。 相似文献
3.
4.
近年来,医院重医疗、轻教学,临床教师带教意识淡薄,加上社会因素的干扰,实习生提前介入考研、求职、择业,影响了临床教学质量。对此,广西桂林医学院针对存在的问题,进一步明确了办院思想,制定了临床教学质量评估标准,强化了临床教学管理,增强了带教意识,尤其是探讨了影响儿科教学质量的成因与对策,提高了临床教学质量。 相似文献
5.
MR扩散加权成像鉴别脑结核瘤及高级星形细胞瘤和脑转移瘤的价值 总被引:3,自引:0,他引:3
目的探讨MR扩散加权成像(DWI)在脑结核瘤、高级星形细胞瘤和脑转移瘤鉴别诊断中的价值。方法14例脑结核瘤、15例脑高级星形细胞瘤和21例脑转移瘤患者,在术前或接受治疗前行常规MRI和DWI。测量并计算3种疾病瘤体、瘤周围水肿带的平均表观扩散系数(ADC)值和病灶与对侧相应部位正常脑白质区ADC值的比值(rADC值)。结果脑结核瘤瘤体平均ADC值和rADC值分别为(1.2±0.2)×10^-3mm^2·s^-1和1.6±0.3,高级星形细胞瘤瘤体平均ADC值和rADC值分别为(0.8±0.1)×10^-3mm^2·s^-1和1.1±0.1,转移瘤瘤体平均ADC值和rADC值分别为(0.8±0.1)×10^-3mm^2·s^-1和1.0±0.2。3种疾病瘤体平均ADC值(F=33.57,P〈0.01)之间和rADC值(F=33.27,P〈0.01)之间差异均有统计学意义。脑结核瘤瘤周水肿带平均ADC值和rADC值分别为(1.8±0.1)×10^-3mm^2·s^-1和2.5±0.2,脑高级星形细胞瘤瘤周水肿带平均ADC值和rADC值分别为(1.4±0.2)×10^-3mm^2·s^-1和1.8±0.3,脑转移瘤瘤周水肿带平均ADC值和rADC值分别为(1.9±0.2)×10^-3mm^2·s^-1和2.3±0.5。3种疾病瘤周围水肿带平均ADC值(F=23.17,P〈0.01)之间和rADC值(F=5.94,P〈0.01)之间差异均有统计学意义。结论结合MRI、DWI检测方法,根据病灶瘤体和瘤周水肿带的ADC和rADC值可帮助鉴别脑结核瘤、脑高级星形细胞瘤和脑转移瘤。 相似文献
6.
基于超高效液相-飞行时间质谱技术的 中药女贞子代谢组学研究 总被引:4,自引:2,他引:4
目的 :建立中药女贞子生品及不同工艺炮制品的代谢组学分析方法,比较研究其指纹图谱差异,探讨女贞子炮制机制。 方法 :采用超高效液相-飞行时间质谱(UPLC-Q-TOF-MS)及多元统计分析技术对生品及不同工艺炮制品进行指纹图谱差异比较分析。 结果 :生品和不同炮制品指纹图谱存在明显差异,且鉴定了一个产生差异的化学成分标志物- ligustaloside B,其在女贞子炮制品中的含量高于女贞子生品。 结论 :UPLC-Q-TOF-MS结合多元统计分析方法可对女贞子药材及其饮片进行质量评价,同时为炮制机制提供了一定依据。 相似文献
7.
牛膝,自历代本草发展至今,品种演变复杂。以其冠名的中药颇多,除了当今通用的怀牛膝、川牛膝外,尚有土牛膝、杜牛膝、广东土牛膝、红牛膝、白牛膝、麻牛膝以及味牛膝等。诸药间常有混用、误用的情况。本文就此对牛膝的本草历史考证作一综述,正本清源,以供临床正确选药。 相似文献
8.
系统内标法测定七参颗粒中多指标成分 总被引:1,自引:0,他引:1
目的:建立同时测定七参颗粒中多个有效成分的系统内标含量测定方法。方法:以七参颗粒中人参皂苷Rg1为内标,测定人参皂苷Rg1与三七皂苷R1、人参皂苷Re和人参皂苷Rb1之间的相对校正因子,利用该相对校正因子计算三七皂苷R1、人参皂苷Re和人参皂苷Rb1的含量,并与外标一点法测定结果进行比较,以确定方法的准确性和可行性。结果:外标一点法与系统内标法测定3批七参颗粒中的4种成分含量的结果无显著差异(P0.05),可以准确测定七参颗粒中4种成分的含量。结论:系统内标含量测定方法既能同时测定中药中多个成分的含量,又能简化实验操作,有望成为适合中药特点的多指标质量评价新模式。 相似文献
9.
目的:研究哈蟆油对自然衰老雌性大鼠抗衰老能力的影响。方法:SD雌性大鼠随机分组,老年对照组和青年对照组灌胃空白植物油,各给药组大鼠给予18g/kg、9 g/kg哈蟆油,连续给药6周,6周末各组大鼠腹主动脉采血分离血清,并取脑组织冰浴匀浆,检测血清、组织匀浆超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-Px)活性和丙二醛(MDA)、过氧化氢(H2O2)的含量,以评价哈蟆油对自然衰老雌性大鼠抗氧化能力影响。结果:与老年对照组相比,哈蟆油高、低剂量组血清、脑匀浆SOD、GSH-Px活力显著升高,MDA、H2O2含量显著降低。结论:哈蟆油对自然衰老雌性大鼠具有提高抗氧化能力的作用。 相似文献
10.
Objective To investigate anethol trithione therapic efficiency on dry eye. Methods It was a prospective random double-blind controlled study. Eighty cases diagnosed dry eye in Ocular Surface Out-patient Clinic of Xiamen University Affiliated Xiamen Eye Center from 2006 to 2008 were divided into two groups: anethol trithione group and control group, 40 cases in each group. Every group was then divided into two subgroups: weak dry eye subgroup, middle and severe dry eye subgroup. All groups had been added with 0.05% refresh drops. All patients had been detected and evaluated by subjective symptoms of dry eye, visual acuity,corneal fluorescent staining(F1), break-up time(BUT) and Schirmer Ⅰ test (SⅠT) at pre-therapy and 3,7,28 d of post-therapy. All groups had been compared and analyzed by F test and sample mean difference (SMD) or median difference (MD) comparison between pre-therapy and post-therapy. Results Except of tear and red eye, the other subjective symptoms of dry eye, F1, BUT and SⅠT of weak dry eye subgroup of both groups had been improved at 7 d after therapy. Only those of middle and severe dry eye subgroup of anethol trithione group had been improved at 7 d after therapy compared with those of pre-therapy: SMD=0.96 (visual tiredness), 1.26 (dry and unsmooth sensation), 0.82 (foreign body sensation), 1.28 (burning sensation), 1.05 (photophobia), 1.48 ( pain ) ; MD=0.30 (visual acuity), 4.00 (F1) ,5.00 (BUT), 5.00 (SⅠT) [F=15.30 (visual tiredness), 15.68 (dry and unsmooth sensation ), 13.56 (foreign body sensation), 20. 91 ( burning sensation ), 18.90 (photophobia), 27.22 ( pain ), 10.54 (visual acuity), 188.21 (F1) ,261.76 (BUT) ,269.05 (SⅠT) ;P<0. 05]. Those of middle and severe dry eye subgroup of control group hadn't significantly been improved at 28 d after therapy: SMD=0.10 (visual tiredness) ,0.16 (dry and unsmooth sensation) ,0.09 (foreign body sensation) ,0.38 ( burning sensation ), 0.24(photophobia) ,0.36 (pain) ,0.23 (red eye) ; MD=0.10 (visual acuity) ,0.50(F1) ,0.50(BUT), 0.50(SⅠT) [F=1.76 (visual tiredness), 1.61 (dry and unsmooth sensation), 1.02 (foreign body sensation),2.39 (burning sensation), 2.42 (photophobia), 2.73 ( pain ), 2.55 ( red eye ), 1.46 ( visual acuity) ,2.35 (F1) ,2.90 (BUT) ,2.76 (SⅠT) ; P>0.05]. SⅠT of anethol trithione group had been improved more significantly after therapy (F=13.77, P<0.05). Conclusion Anethol trithione could significantly improve middle and severe dry eye patients' symptoms and signs whose lacrimal gland function survival and it has clinical application value. 相似文献