dif相关论文
混凝土动态强度的增强效应DIF（dynamic increase factor）一般由混凝土SHPB（split Hopkinson pressure bar）试验进行测量，而基于不同应变......
《2019年中国数字阅读市场研究报告》中提到,我国2019年度数字阅读的用户规模已达到7.4亿人次,同比增长1.4%。面对纷繁复杂的网络......
Achieving a thorough understanding of how primary sedimentary granularity drives considerable het-erogeneity in internal......
Most studies dealing with cross-cultural bias identify biased items by using one of the Differential Item Functioning (D......
Numerical Analysis of Upwind Difference Schemes for Two-Dimensional First-Order Hyperbolic Equations
In this paper, we consider the initial-boundary value problem of two-dimensional first-order linear hyperbolic equation ......
BACKGROUND Under physiological conditions,sputum produced during acute exacerbation of chronic obstructive pulmonary dis......
目的探讨小肠转移性上皮样血管肉瘤(EA)的临床表现、组织学特征、诊断及鉴别诊断，进一步提高对该病的认识。方法回顾性分析我院收治......
目的探讨体素内不相干运动成像（IVIM）术前预测食管鳞癌脉管癌栓形成的价值。方法前瞻性收集2016年4月至2019年4月河南省肿瘤医院拟行......
Experimental and mesoscopic investigation on the dynamic properties of coral aggregate concrete in c
To investigate the dynamic responses and comprehending the damage mechanism of coral aggregate concrete(CAC) in compress......
Induced neural stem/precursor cells for fundamental studies and potential application in neurodegene
Recent research has shown that defined sets of exogenous factors are sufficient to convert rodent and human somatic cell......
目的 探讨血清midkine（MK）能否鉴别甲状腺结节良恶性及131I治疗前血清MK能否预测DTC患者是否存在转移灶.方法 在鉴别甲状腺结节良恶......
【目的】了解亚洲柑橘木虱Diaphorina citri Kuwayama与黄龙病菌Canditatus Liberibacter asiaticus的分子互作机制。【方法】利用......
In the present work we prove some existence results of heteroclinic orbits and heteroclinic chains for a second order di......
We developed an adaptive optics system to correct the wave-front distortion of an intense fs laser beam from our multi-T......
One New 3D Pillared-layer Ag(Ⅰ)-Coordination Framework Based on a Unique 1D Ag_2O_2 Ribbon: Synthesi
A new 3D Ag(I) coordination polymer {[Ag(AZDB)_(0.5)(bpe)_(0.5)]·H_2O}_n(1) has been papared by azobenzene-3,3?-dicarbo......
Synthesis,Structure and Luminescent Properties of a Two-dimensional Cobalt(Ⅱ) Coordination Polymer B
A two-dimensional coordination polymer [Co(H_2tba)_2(DMF)_2]_n 1(H_2tba = 2-thiobarbituric acid anion, DMF = N,N-dimethy......
Information fusion diagnosis and early-warning method for monitoring the long-term service safety of
Analyzing the service behavior of high dams and establishing early-warning systems for them have become increasingly imp......
在尼康的镜头阵营中,有几支性能优异,但价格相对平易近人的标准变焦镜头,它们的共同特点是光圈较小,拥有很强的近摄能力。今天我们......
Nanocrystalline Ni(OH) 2 was prepared by cathode deposition in an aqueous solution of nickel nitrate. The structure and......
Typhoon-dominated Influence on Wood Debris Distribution and Transportation in a High Gradient Headwa
Wood debris is an important component of mountain streams. It causes serious damage and renders difficulty of water reso......
An effective design method of freeform micro lens array is presented for shaping varied laser beams into prescribed rect......
Diffusion kurtosis imaging of microstructural changes in brain tissue affected by acute ischemic str
The location of an acute ischemic stroke is associated with its prognosis.The widely used Gaussian model-based parameter......
肺郎格汉斯细胞组织细胞增多症(pulmonary Langerhans cell histiocytosis,PLCH)是一种少见的肺间质疾病,可原发于肺,也可能是全身......
目的 探讨血清血管生成素-2(Ang-2)检测对胃癌的诊断价值.方法 采用酶联免疫吸附法(ELISA)定量检测108例胃癌患者、50例慢性胃炎患......
目的 探讨表现为孤立结节的原发性肺隐球菌病(primary pulmonary cryptococcosis,PPC)的CT特征.方法 搜集2011年3月至2015年9月在......
目的:探究大疱性皮肤病病理特点及DIF检验准确性.方法:选取我院自2018年3月至2020年3月内收治的大疱性皮肤病患者69例,采用DIF技术......
非编码RNA在各种生命过程中扮演着极其重要的角色,特别是microRNA(miRNA)一直是生命科学的热点研究领域。miRNA能在转录后水平调控......
应用分部评分模型从双层面、单维度视角分析了上海市某区高考一模试题质量.通过3864个样本分析得出以下结论:该测试卷信度和区分度......
One-step synthesis and structural quantitative analysis of La_(2/3)Sr_(1/3)MnO_3/La_(1.4)Sr_(1.6)Mn_
La2/3Sr1/3MnO3/La1.4Sr1.6Mn2O7 composites with arbitrary weight percentage were prepared using a one-step solid-state re......
This paper proposes a higher-order shear deformation theory to predict the bending response of the laminated composite a......
A randomized controlled trial of laparoscopic versus open cholecystectomy in patients with cirrhotic
AIM: To evaluate the characters, risks and benefits of laparoscopic cholecystectomy (LC) in cirrhotic portal hypertensio......
Improvement of quantitative testing of liver function in patients with chronic hepatitis C after ins
AIM: To investigate if and to what extent antiviral therapy influenced a broad panel of quantitative testing of liver fu......
测验的公平性越来越受到包括政治家、法学家、教育和心理学家们在内的各个领域的专家们的重视。题目差异功能(DIF)分析是构造公平......
IntroductionIn recent years,Ge and its oxide haveattracted a considerable interest for their potentialapplication in opt......
Relationship between matrix metalloproteinase-2 mRNA expression and clinicopathological and urokinas
AIM: To investigate the relationship between matrix metalloproteinase-2 (MMP-2) mRNA expression and clinicopathologic an......
Molecular Survey of Sulphate-Reducing Bacteria in the Deep-Sea Sediments of the West Pacific Warm Po
The sulfate-reducing bacteria(SRB) community in the deep-sea sediments of the west Pacific Warm Pool(WP) was surveyed by......
Sn/Cu/ZnS precursor were deposited by evaporation on soda lime glass at room temperature,and then polycrystalline thin f......
Objective: To summarize the causes of difficulty in gastric cancer diagnosis in young people and explore potential metho......
The bonding of solid steel plate to liquid al uminum was studied using rapid solidification. The relationship models of......
A new ternary alkali metal chalcogenide halide, K3SI, has been synthesized by solid state reaction method and structural......
四余度容错计算机综合开发系统Ｑ—ＤＩＦ（ＱｕａｄＲｅｄｕｎｄａｎｔｙＣｏｍｐｕｔｅｒＤｅｖｅｌｏｐｍｅｎｔａｎｄＩｎｔｅｇｒａｔｉｏｎＦａｃｉ１ｉｔｙ），是为四余度容错计算机而研制的开发、综合系统。Ｑ－ＤＩＦ除了提供一般开发综合系统的功能外；还针对四余度容......
Tuberous sclerosis complex (TSC) is a dominantly inherited disorder which characterized by the growth of harmatomatous i......
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The title compound, {[Ag2(bipy)2(H2O)2]·pydc·2H2O}n (bipy=4,4’-bipyridine, pydc= pyridine-3,5-dicarboxylate), has bee......
Synthesis, Crystal Structure and Photoluminescent Property of a 3D Hydrogen-bonded Supramolecular Co
The title compound, [Pd(2,2’-bipy)2](H3adip)2·4H2O, was synthesized via the hydrothermal reaction of PdCl2 with 5-amin......
Synthesis,Crystal Structure and Optical Properties of KPr(MoO_4)_2 with the Scheelite-type Structure
Solid-state reaction of praseodymium (III) oxide,K2CO3 and MoO3 at high temperature leads to a potassium lanthanide doub......
Quasi Ellipsoid Gear Surface Reconstruction Based on Meshless Local Petrov-Galerkin Method and Trans
Special transmission 3D model simulation must be based on surface discretization and reconstruction,but special transmis......
Synthesis and Crystal Structure of a Ca~Ⅱ Coordination Polymer of H_2Adefovir (H_2Adefovir={[2-(6-Am
A Ca II coordination polymer of H 2 Adefovir (H 2 Adefovir={[2-(6-amino-9H-purin-9-yl)ethoxy]methyl}phosphonic acid),[Ca......
A simple and efficient method was developed for fabricating spherical granules of CuO catalyst via a three-step procedur......
