Materials Literature
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Here we present a detailed study of the THz and FIR response of the mixed perovskite manganite system Eu$_{1-x}$Ho$_x$MnO$_3$ for holmium concentrations x = 0.1 and 0.3. We compare the magnetic excitations of the four different magnetically ordered phases (A-type antiferromagnetic, sinusoidally modulated collinear, he…
Electronic structures of 3d transition element Cu-doped anatase TiO2 and (Cu+N) co-doped anatase TiO2 are studied by using the first-principle method based on density functional theory. The calculations are performed by using the projector augmented wave method within the generalized gradient approximation as implemen…
In this study, we explain an approach including conversion from constitutive parameters to dispersive transmission line parameters using the double-band DNG (double-negative) properties of the circular type fishnet metamaterials. After designing the metamaterial structure, the numerical calculations and the composite…
利用预辐射接枝技术制备含有季铵盐官能团的超高分子量聚乙烯（UHMWPE-g-P（GMA-co-MA）-TETAGTA）纤维。研究该纤维对Au（III）的吸附性能,重点考察了起始溶液的p H值、初始Au（III）离子浓度和温度对吸附容量的影响。实验结果表明,UHMWPE-g-P（GMA-co-MA）-TETA-GTA纤维对Au（III）的吸附速率较快、吸附容量大,180 min内能够达到吸附平衡;在溶液的p H值为3时吸附容量最大（355 mg/g）。该吸附过程符合准二级动力学模型和和Langmuir等温吸附模型,吸附反应是一个熵减少的放热反应。
In fixed bed reactor, catalyst particles are in different sizes and are randomly scattered in bed which led to the non-uniform flow pattern. Thus, non-uniform access of reactants to the catalytic surfaces will lead to a sharp fall in overall performance of reactor. Pressure drop and high energy consumption are among o…
First release of Dimbl from GIT
Lớp mạ vang va hợp kim vang được chế tạo sử dụng dung dịch đệm với pH = 4,5. Cac kim loại Ni, Co được cung cấp dưới dạng muối đơn trong khi vang va đồng được đưa vao dưới dạng phức cyanid va EDTA. Tinh chất của lớp mạ hợp kim phụ thuộc vao thanh phần dung dịch va cac điều kiện lien quan; từ đo, ta co thể điều khiển ch…
Heterojunctions of metal oxide semiconductors with quantum dots (QD) have been deployed in a number of advanced electronic devices. Improvement in the devices’ performance requires in-depth studies on charge carrier transfer dynamics. In this work, charge carrier dynamics, at the interface on zinc oxide nanowires (ZnO…
The main objective of the present work is to correlate quarter-point angle and nuclear radius or nuclear matter distribution. Various phenomenological formulae with parameters for strong absorption radius Rs are obtained and compared by fitting the experimental data of quarter point angle extracted from nuclear elasti…
Trong nghien cứu nay, thanh phần axit beo bao gồm axit beo dạng trans của một số loại banh qui được sản xuất bởi cong ty sản xuất banh kẹo Việt Nam va cac sản phẩm nhập khẩu được xac định bằng phương phap sắc kI khi. Axit palmistic va oleic la hai loại axit chủ yếu, với nồng độ được xac định tuần tự la 21 % đến 52 %,…
Bai bao nay sử dụng tro bay chưa biến tinh (FAs) va tro bay biến tinh vinyltrietoxy silan (VTES) va 3-glycidocypropyltrietoxy (GPTES) silan (MFA) để chế tạo vật liệu tổ hợp tren cơ sở nền polyvinylclorua (PVC). Cac tinh chất cơ học va khả nang chống chay của vật liệu tổ hợp được xac định theo cac tieu chuẩn ASTM D638…
The tribological test with Pin-On-Disc configuration measures friction and wear properties in dry or lubricated sliding surfaces of a variety of materials and coatings. Polymeric matrix composites loaded with mineral filler were used, 1%, 3%, 10%, 30%, and 50% mass percentage of filler, to reduce the material cost by…
Trong cong trinh nay, vật liệu nanocompozit LLDPE / 2 % clay-VTMS / 0,1 – 0,3 % DCP được chế tạo bằng phương phap trộn hợp ở trạng thai nong chảy tren thiết bị trộn kin Haake. Sau đo, mẫu được ep tren may ep Toyoseiky với lực ep 150 - 220 kg/cm 2 . Cấu truc va tinh chất của vật liệu được nghien cứu bằng cac phương pha…
Authors : Seyed Mohammad Mahdi Zamani, Kamran Behdinan Abstract : In this study, a multiscale framework is performed to model the strength of Nextel fibers in presence of an atomistic scale pre-crack at finite temperatures. The bridging cell method (BCM) is the multiscale technique applied in this study, which decompo…
Simple high-performance, two-stage hybrid technique was developed for fabrication of different plasmonic nanostructures, including nanorods, nanorings, as well as more complex structures on glass substrates. In this technique, a thin noble-metal film on a dielectric substrate is irradiated by a single tightly focused…
Quantum spin Hall effect was first predicted in graphene. However, the weak spin orbit interaction in graphene meant that the search for quantum spin Hall effect in graphene never fructified. In this work we show how to generate the quantum spin-valley Hall effect in graphene via quantum pumping by adiabatically modul…
\n Resíduos produzidos em atividades industriais podem trazer danos significativos ao ambiente, principalmente quando estes não são degradáveis (ou são dificilmente degradáveis) por processos naturais. Polímeros sintéticos estão entre os principais resíduos descartados na natureza, permanecendo inertes por séculos e i…
Understanding evaporation or drying in granular media still remains complex despite recent advancements. Evaporation depends on liquid transport across a connected film network from the bulk to the surface. In this study, we investigate the stability of film networks as a function of granular packing. Using a controll…
Le but de l’étude est de développer des méthodes permettant de mesurer les propriétés thermomécaniques d’un acier martensitique lors de chauffe rapide. Ces données permettent d'alimenter les modèles d'éléments finis existant avec des données expérimentales. Pour cela, l’acier 4340 est utilisé. Cet acier est notamment…
Density Functional Theory Adsorption and absorption of hydrogen on Pd Ultrathin Pd films on a Pt(111) substrate Film-to-bulk transition