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[期刊论文] 作者：Qingfeng Liu,
来源：当代教育研究(百图) 年份：2020
According to the understanding of English learning process and the surrounding educational environment,it is found that most English learners have not received...
[会议论文] 作者：Qingfeng Liu,
来源：泛华统计学会(icsa)2015年学术会议 年份：2015
To avoid the risk of misspecification between homoscedastic and heteroscedastic models,we propose a combination method based on OLS and GLS model averaging esti...
[期刊论文] 作者：Xiaomei Song,Qingfeng Liu,
来源：中国经济评论：英文版 年份：2005
...
Psychological research and analysis of patients whome injected Polyacrylamide hydrogel in breast bef
[会议论文] 作者：Mingde Liao,Qingfeng Liu,
来源：2014年全国中西医结合医学美容学术会议暨第二届中国中西医结合抗衰老微创技术研讨会、第十二届海峡两岸微整形学术研讨会 年份：2014
Objective To investigate the psychological status of patients with mammaplasty by injecting polyacrylamide hydrogel, and the influence of operation intervention on the psychological.Method 60 patients...
Application of customized augments fabricated by rapid prototyping for severe bone defects of the kn
[期刊论文] 作者：Yin Qingfeng,Liu Wenguang,Wang,
来源：中华医学杂志（英文版） 年份：2014
With the population aging and an increasing desire for a high quality of life,millions of patients who suffered knee arthropathy have undergone total knee arthr...
Material Properties of Marine Hydrogenous Ferromanganese Crust and Its Performance in Desulfurizatio
[期刊论文] 作者：LU Xiancai HOU Qingfeng LIU Xi,
来源：地质学报：英文版 年份：2006
海洋的氢的铁锰合金外壳，一个重要金属资源以后，作为自然 nano-structuredmaterial 的一种类型在各种各样的应用有重要潜力。由采用扫描电子显微镜学，氮吸附解吸附作用等温线测...
Material Properties of Marine Hydrogenous Ferromanganese Crust and Its Performance in Desulfurizatio
[期刊论文] 作者：LU Xiancai,HOU Qingfeng,LIU Xi,
来源：黑龙江科技学院学报 年份：2006
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7...
[期刊论文] 作者：Luo Lan,Liu Qingfeng,Liu Qian,
来源：稀土学报（英文版） 年份：2004
Pure GdAlO3: RE (RE = Eu, Pr or Tb) crystalline phase was formed at 900 ℃ with the precursor prepar by nitric-citric combustion process. The synthesis process...
Material Properties of Marine Hydrogenous Ferromanganese Crust and Its Performance in Desulfurizatio
[期刊论文] 作者：LU Xiancai,HOU Qingfeng,LIU Xi,
来源：地质学报（英文版） 年份：2004
Marine hydrogenous ferromanganese crust, an important metal resource in the future, has significant potential in various applications as a type of natural nano-...
[期刊论文] 作者：LI Qingfeng,Liu Delin,Jin Long,
来源：城市道桥与防洪 年份：2001
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生、测量监控等方面人手,介绍了S226海滨大桥...
[期刊论文] 作者：WEN QingFeng,LIU Ying,HUANG We,
来源：中国科学：物理学、力学、天文学英文版 年份：2013
In this paper,the effect of surface roughness on sealing clearance,pressure distribution,friction torque and leakage is studied by the thermal-elasto-hydrodynam...
[期刊论文] 作者：Qingfeng Liu,Yanhua Qi,Qiuli L,
来源：中国科学：生命科学英文版 年份：2018
...
Targeted disruption of tyrosinase causes melanin reduction in Carassius auratus cuvieri and its hybr
[期刊论文] 作者：Qingfeng Liu,Yanhua Qi,Qiuli L,
来源：中国科学:生命科学英文版 年份：2019
The white crucian carp(Carassius auratus cuvieri,WCC) not only is one of the most economically important fish in Asia,characterized by strong reproductive abili...
[会议论文] 作者：Qingfeng Liu,Qingsong Yao,Guoqing Zhao,
来源：吉林大学,吉林省数量经济学会 年份：2017
This paper considers the problem of model selection and model averaging for regression models which can be nonlinear in their parameters and variables.We propose a new information criterion called non...
Application of customized augments fabricated by rapid prototyping for severe bone defects of the kn
[期刊论文] 作者：Yin Qingfeng,Liu Wenguang,Wang Shaojin,
来源：中华医学杂志英文版 年份：2014
...
[会议论文] 作者：Jingjing Bi,Zhiguo Zhang,Qingfeng Liu,Guisheng Zhang,
来源：中国化学会第28届学术年会 年份：2012
含氟化合物扮演着越来越重要的角色,引入氟原子的化合物往往表现出特殊的性质,因此他们被广泛应用于药物化学,农药化学和材料化学.1 尤其是2-单氟代二羰基化合物广泛的应...
An Approach to Polysubstituted 4-Pyridones from N-Aryl Acetoacetamides via a N to C 1,3-Acyl Migrati
[会议论文] 作者：Zhiguo Zhang,Shiliang Fang,Qingfeng Liu,Guisheng Zhang,
来源：中国化学会第十届全国有机合成化学学术研讨会 年份：2012
...
[会议论文] 作者：Zhiguo Zhang,JIngjing Bi,Qingfeng Liu,Guisheng Zhang,
来源：中国化学会第十届全国有机合成化学学术研讨会 年份：2012
...
[会议论文] 作者：Qingfeng Liu,Wenpeng Zhang,Duxin Sun,Guisheng Zhang,
来源：第九届IUPAC化学生物学国际研讨会暨第八届世界华人药物化学研讨会 年份：2012
Anthracyclines are considered to be some of the most effective anticancer drugs for cancer therapy,but are limited by drug-resistance and cardiotoxicity.To overcome drug resistance,we designed a 3-azi...
Iron-catalyzed Multicomponent Tandem Reaction of Biginelli Reaction/Vinylogous Aldol Condensation As
[会议论文] 作者：Zhang,Zhiguo,Zhang,Lianqiang,Liu,Qingfeng,Liu,Tongxin,Zhang,Guisheng,
来源：中国化学会第八届有机化学学术会议暨首届重庆有机化学国际研讨会 年份：2013
...
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