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本文的主要讨论以下内容：1. Hilbert空间上有界线性算子的稳定扰动.主要研究了Hilbert空间上有界线性算子稳定扰动的等价条件,并利......
研究背景:房性心动过速简称房速（atrial tachycardia,AT）是发生在心房的快速性心律失常,心房率通常≥100次/分,可根据其电生理机制与......
Vortex optical communication has been a hot research field in recent years.A key step is mode recognition in the orbital......
本文研究广义逆AT,S（2）的扰动以及其应用.利用奇异值分解和CS分解在值域和零空间扰动下给出矩阵AT,S（2）的扰动界和相对扰动界.在特殊条......
Numerical Prediction of Intermetallic Compounds Thickness in Friction Stir Welding of Dissimilar Alu
An atomic diffusion model is developed to predict the thickness of intermetallic compounds (IMCs) at the interface of al......
Chemical softener (Cepreton UN) is used to soften the cellulosic fiber (cotton) in the textile industries to make clothe......
Economic Responsibility Audit of Leading Cadres of the Party and Government at the Grassroots Level-
Economic responsibility audit is an important part of the socialist audit supervision system with Chinese characteristic......
The prevalence and burden of diabetes mellitus and chronic kidney disease on global health and socioeconomic development......
Giant androgen-producing adrenocortical carcinoma with atrial flutter: A case report and review of t
BACKGROUND Adrenocortical carcinoma(ACC),the second most aggressive malignant tumor,lacks epidemiological data worldwide......
Based on daily average temperature,precipitation and sunshine hours during 1961-2018 from two meteorological stations of......
A matured canola plant has different types of stems based on the diameter, such as narrow (immature), medium (mature), a......
At the China Spallation Neutron Source(CSNS), we have developed a custom gas-filling station, a glassblowing workshop, a......
Desiderius Erasmus?\"Copia\"is not only inscribed with rhetorical interpretations but also implied with semiotic mea......
Recent observations are discovering more and more galaxies that do not fit in the conventional Hubble classification sch......
Selective harvesting at rational intervals promotes carbon sequestration in temperate coniferous and
Evidence-based selective cutting at prescribed intervals as part of good forest management can enhance the carbon seques......
对33例慢性肾衰患者应用单向免疫扩散法测定血清AT-Ⅲ蛋白含量与火箭电泳法测定ⅧR∶Ag,其结果与对照组比较有明显改变(P......
本文检测了不育患者精浆(HSP)脓细胞的变化与纤维蛋白原(Fib)、α_1抗胰蛋白酶(α_1-AT)、C反应蛋白(CRP)、α_2巨球蛋白(α_2-MG)......
The impact of vibrations due to underground trains on Beijing metro line 15 on sensitive equipment in the Institute of M......
为提高运输能力，探讨了电气化铁路ＡＴ（２×２５ｋＶ）供电方式双线区段上开设“Ｖ”型天窗的可能性。为此，建立了用于理论分析的数学模型，完成了感应电压......
AIM:To evaluate the incidence,surgery,mortality,and readmission of upper gastrointestinal bleeding(UGIB)secondary to pep......
１ 钢轨实物弯曲疲劳试验受力方式的选择钢轨实物弯曲疲劳试验方法已纳入铁道部标准（ＴＢ１３５４—７９）。这个标准规定，“该方法适用于各种类型和材质......
at几点几分,在三餐时,在中午或晚上,在on具体某天或某天上午、下午或晚上in年、季、月或泛指上午、下午或晚上in,at,on这三个介词......
采用拉曼光谱方法和光学二次谐波方法，观察蒸镀在石英玻璃上的Ｃ６０薄膜在空气中的变化，根据实验中观察的Ｃ６０薄膜１４６９ｃｍ＾－１拉曼谱的演变情况，结合二次谐......
小车，不止“经济”——更省原料成本，更少能源消耗，更小占地空间，但却更夏活易控，甚至多功能。所谓的“Superminis”——超级小车，就是车......
越过油水的很多潜在的摆动连接 ahve 由在油阶段(硝基苯答案) 在水的阶段和各种各样的氨基酸或甚至多肽使用各种各样的表面活化剂......
在 nano 摩擦学的四个区域的最近的发展被分析。他们是微的并且 nano 磨擦并且穿，微并且 nano-tribological 工程。在 nano 摩擦学......
Regulation of activin A in cell proliferation and hormone secretion by human normal trophoblast cell
Regulation of activin A in cell proliferation as well as hCG and progesterone secretion was investigated using primary c......
Mechanism of the heterogeneous reaction of carbonyl sulfide with typical components of atmospheric a
The homogeneous reactions of carbonyl sulfide (COS) with OH and oxygen radicals have been studied thoroughly. However, t......
in、on和at是英语中使用得最广泛的三个时间介词 ,为了帮助同学们学习如何正确使用它们 ,下面作归纳小结 :1、把一天时间分为上午......
由于金属非晶态材料在实际应用中表现的特殊性能,所以,近年来对非晶态晶化行为的研究越来越引起人们的兴趣。Ni—Zr合金作为典型......
ON THE VERTICAL DISCRETIZATION OF ATMOSPHERIC MODELS—PART I:EXISTING PROBLEMS,DATA PROCESSING AND CH
Discussions are carried out on the vertical discretization of current atmospheric models.It ispointed out that there exi......
本文用X射线衍射、热学分析、磁性测量等手段研究了Nd-Fe-B(B≤50at.％)三元系相图,主要结果如下:1.重新测定了Nd-Fe二元系相图,确证......
Using the method for the classical electrostatic problems, some difficuties in modern phys-ics and engineering canbe ove......
Polyarylether dendrons as macroinitiators for the 'living'/controlled free radical copolymerization of N-phenylm......
Samaria-doped ceria Ce0.8Sm0.2O2-δ(SDC) and SmFe0.7Cu0.3-xNixO3 have been synthesized by the sol-gel method and charact......
Controls of interactions between iron hydroxide colloid and water on REE fractionations in surface w
The influence of pH on the partitioning behavior of REE at the water/particulate interface has been studied experimental......
Dear Editor,Soybean is one of the most important crops worldwide.A high-quality reference genome will facilitate its fun......
Microstructure and elevated-temperature tensile properties of differential pressure sand cast Mg-4Y-
The microstructures of an Mg-4Y-3Nd-0.5Zr alloy by differential pressure casting were investigated using scanning electr......
The electromagnetically induced transparency in the Y-type four-level atom system at low light level
In this paper a Y-type four-level atom interacting with external fields system is investigated. It is shown that increas......
将放射性核素标记到单抗 (Ｍｏｎｏｃｌｏｎａｌａｎｔｉｂｏｄｙ ,ＭｃＡｂ)上 ,利用单抗的肿瘤导向作用和放射性核素的细胞毒作用进行肿瘤的放射免疫治疗 ,是当今肿瘤核医学的......
Enhancing water repellence and mechanical properties of antibacterial gelatin/Ce(Ⅲ) fiber by heat tr
The water repellence and mechanical properties of the gelatin/Ce(Ⅲ) fiber(GCe fiber) were improved by heat treatment,wh......
本文根据AT供电牵引网的结构特点,对单、复线AT牵引网的特性进行了较深入的分析,提出了单、复线AT牵引网故障测距的数学模型和用微......
我们对84例甲状腺病患者和96例健康人的血管紧张素_1(AT_1)进行了检测,以了解对甲状腺疾病的诊断价值。一、对象:84例患者中,甲亢......
妊高征患者血浆蛋白Ｃ活性与ＡＴ－Ⅲ抗原相关性的研究王秀霞，曲陆荣，陈世洁（沈阳第二临床学院妇产科沈阳１１０００３）关键词蛋白Ｃ，抗凝血酶Ⅲ，妊娠高血压综合......
