Materials Literature
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This paper presents the results of an oversight evaluation of qualification and production testing of concrete materials and concrete for a nuclear project in United States. The testing requirements for qualification of concrete materials, including cement, fly ash, fine and coarse aggregates, admixtures, were in acco…
Introduction \nPeritoneal metastasis is advanced disease and is usually widely disseminated at the time of discovery. It is crucial to detect peritoneal metastasis at an early stage and to allow precise patient selection for the right treatments. Both \nfluorodeoxyglucose positron emission tomography/computed tomograp…
maupun seluruhnya kepada pihak lain tanpa seizin tertulis.
Diamond-like carbon (DLC) é um tipo de carbono amorfo (a-C), ou carbono amorfo hidrogenado (a-C:H), com uma alta fração de carbono com ligações sp3. Filmes de DLC vêm sendo estudados com atenção considerável devido as suas características únicas como alta dureza, baixo coeficiente de atrito (em geral menor que 0,2) be…
This research describes further development of the direct impregnation method for synthesis of chromic oxide and molybdic oxide supported on the mesoporous silica molecular sieve (MCM-41) for use as a solid acid catalyst. The catalysts were characterized by powder X-ray diffraction (XRD), thermo gravimetry (TG), Fouri…
Cette thèse s'inscrit dans le domaine de la métrologie de fréquence. Elle a pour objet l'observation d'un effet magnéto-électrique bilinéaire en E et B dans des milieux dilués, encore non observé au début de cette thèse. Nous nous intéressons particulièrement au cas où E et B sont orthogonaux entre eux. Afin de détect…
Absorpsjon av karbondioksid ved hjelp av aminer er ein prosess som har stort potensial til å bli brukt på storskala anlegg. Mengde karbondioksid som blir absorbert i aminløysninga er avhengig av gass-væske likevekta. Fokuset er modellidentifisering av likevektsaminsystemet. Likevektsmodell pressenter i denne rapporten…
In this study, the non-toxic and good biocompatibility of Carboxymethyl-hexanoyl chitosan (CHC) is used as a carrier, which can be utilized as the surface functional group to bond with [Gd(DOTA-NH2)], fluorophores and monoclonal antibody (Erbitux). The targeted biofunctional contrast agent CHC-[Gd(DOTA-NH2)]-FITC-Erb…
From medicine to aerospace, innovation in multiple fields will not occur without addressing current questions that still exist in polymer behavior and manipulation. This dissertation represents the research carried out over the course of three separate experiments using rheometry as the key technique to explore the be…
在文献综述基础上对磷钨酸铈、硫酸铁铵、硫酸高铈、对甲苯磺酸、氨基磺酸、固体超强酸SO42-/TiO2-WO3、分子筛MCM-48负载硅钨酸、分子筛MCM-48负载磷钨钼杂多酸、磷钨酸镧、活性炭负载磷钨杂多酸、四氯化锡掺杂聚苯胺等31种不同的催化剂催化合成苯甲醛1,2-丙二醇缩醛实验结果进行了比较,通过比较发现：分子筛MCM-48负载磷钨钼杂多酸、二氧化钛负载钛硅钨杂多酸、硅钨钼酸镧、硅钨钼杂多酸掺杂聚苯胺、四氯化锡掺杂聚苯胺、磷钨钼杂多酸掺杂聚苯胺、氯化铜掺杂聚苯胺、硫酸铁铵、硫酸高铈、K5CoW12O40·3H2O、氨基磺酸等11种不同的催化剂催化合成苯甲醛1,2-丙二醇缩醛的收率高达85%以上,具有较高的实用价值。
Em virtude das preocupacoes mundiais com o avanco do aquecimento global e elevacao dos precos do petroleo, a importância pelos biocombustiveis vem aumentando. Os residuos lignocelulosicos sao fontes importantes de materias-primas. Entretanto, necessitam de pre-tratamento, os quais visam a desorganizacao do complexo li…
The winding is modeled using finite element method (FEM) based software and parameters such as capacitance and inductance are calculated for 10 section healthy coil. Using these parameter values, SFRA plots are obtained which are a set of reference for deformation analysis. The winding is modeled as radially and axial…
以Keggin型钛取代钨磷酸钾和醋酸银为反应物合成了1个新的多金属氧酸盐Ag4H3PTi2W10O40.16H2O（1）,通过X射线单晶衍射分析确定了其晶体结构,通过ICP分析和热重分析确定了其组成,通过红外光谱和固体漫反射光谱表征了其性质.单晶结构分析表明,化合物1属于四方晶系,I4/m空间群,晶胞参数a=b=1.39905（13）nm,c=1.14358（18）nm,V=2.2384（5）nm3,Z=2,R1=0.0550,wR2=0.1590.化合物1中的Ag＋均为六配位,每个Ag＋同时与3个多阴离子上的2个端氧和4个桥氧配位形成{AgO6}单元,这些{AgO6}将该多阴离子连接成三维网络结构.
利用高温固相法合成了荧光粉CaLaGa3S6O：Ce^3＋，Tb^3＋，Mn^2＋，研究了其荧光特性．荧光粉CaLaGa3S6O：0．10Ce^3＋，0．03Tb^3＋，0．015Mn^2＋，在400nm近紫外光的激发下，可同时得到434nm、474nm（蓝光）、543nm（绿光）和660nm（红光）的发射．
This report accounts for investigations of ways to reduce the calculation times forsimulations of falling control rods in boiling water reactors done prior to everyreactor startup, known as RIA-calculations. Two methodologies to lower thecalculation times have been proposed, developed and implemented in a set ofmatlab…
以Ag-Cu—Ti合金为钎料钎焊连接C／C复合材料与钛合金（TC4），通过SEM对钎焊连接接头的微观组织和形貌进行分析，用EDS和XRD分析接头中的元素分布和物相组成．实验结果表明，中间钎料层与TC4合金之间的界面，形成了良好的界面扩散层，厚度为5～7μm，与TC4钛合金连接侧的钎料相组成主要为CuTi2，CuTi和Cu3Ti2；钎料层与C／C复合材料形成的扩散层厚度为1～3μm，与C／C复合材料连接侧的钎料相组成主要为CuTiz和CuTi．C／C复合材料与TC4合金之间形成了冶金结合．
实验先用磷酸和钼酸盐合成磷钼杂多阴离子，再通过控制金属种类、pH值及温度，及与有机配体和物料比进行实验，最终制备出五钼二磷酸盐配合物（H2bpy）0．5{[Co（H2O）5][Co（Hbpy）（H2O）4][Mo5P2O23]}并通过IR和X-单晶衍射法进行表征，表征结果与现有文献记载相吻合．成功找到制备五钼二磷酸盐配合物的新条件：（1）温度为160℃左右，pH在4．2—4．5之间；或（2）温度为140℃，pH为3．1—3．5之间，反应3d，均可制备五钼二磷酸盐配合物．
In article mathematical modeling of process of formation screw rift on an internal surface of a glass by means of a profile punch through a cylindrical matrix by a reduction method, with use of the program QForm 2D/3D complex is considered. The main regularities are revealed.
The probably isosymmetric and deformational modifi cations of С nanostructures with atomic covers of18trigonal branch of fullerene’s classification and the possible influence onto tribologic properties of the compositional coatings were discussed.
以Ti(OC 4 H 9 ) 4 、CH 3 COOLi·2H 2 O和GeO 2 为原料, 采用溶胶-凝胶法合成了尖晶石型Li 4 Ti 5- x Ge x O 12 ( x =0、0.05、0.1、0.15)电极材料。通过X射线衍射(XRD)、扫描电镜(SEM)、充放电测试、循环伏安(CV)以及交流阻抗对材料进行结构、形貌及电化学性能表征。研究结果表明, 适量Ge 4+ 掺杂不会改变Li 4 Ti 5 O 12 的尖晶石结构, 但对其颗粒尺寸和形貌均产生影响。由于掺Ge 4+ 后样品的颗粒尺寸减小, 使得Ge 4+ 掺杂Li 4 Ti 5 O 12 倍率性得到不同程度的提高。其中Li 4 Ti 4.9 Ge 0.1 O 12…