Materials Literature
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The study of the effect of Cr substitute at Ti-Site on CaCu₃Ti₄0₁₂ (CCTO) will be carried out. The previous report shows that CaCu₃Ti₄0₁₂ (CCTO) has been found to show that it has a very high dielectric constant at room temperature. This characteristic makes it potentially useful for important applications in microele…
The project is concentrated specifically on the oxyhydrogen gas (HHO) production and factors which influenced the production. The HHO production is done by using electrolyzer part or in detail explanation is electrolysis process of water as electrolyte, stainless steel as electrode and potassium hydroxide as additive.…
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The project attempted to investigate the effect of varying the welding parameters that required welding Stainless Steel by friction welding technique. The parameters involved in this study were heating pressure, heating time, forging pressure and forging time. The scope of the project was to obtain the optimum paramet…
연평균 36만여 톤에 달하는 패각 발생량 중 패화석 비료(16만여 톤)와 채묘기(14만여 톤), 매립(3만여 톤)등을 제외한 나머지 3만여 톤이 미처리되어 주변 연안에 야적되는 실정으로, 미관상 뿐만 아니라 부착된 육질의 영향으로 악취 원인균인 S.aureus및 P.Vulgaris 등이 번식할 가능성이 크며, 이러한 미생물들은 염분 등을 분해시켜 NH3, H2S, Amine과 같은 냄새를 유발시키기 때문에 방치되는 패각을 효과적으로 처리하기 위한 다양한 연구가 요구되는 실정이다. 따라서 본 연구는 매립되거나 방치됨으로써 해양 환경 오염의 주원인이 되는 패각을 효율적…
Erbium doped tellurite glass with starting composition of 75TeO2-(10-x)Nb2O5-10ZnO- (x)Er2O3 (x = 0-2.5 mol%) have been prepared by melt-quenching method and the effect of Er3+ doped on elastic and structural properties was studied. Ultrasonic longitudinal and shear velocity showed initial decrease of 1.39% and 3.29%…
An efficient purification procedure for the punfication of Graphite Nanofibers (GNFs) based on chemical treatment is discussed. There are two different methods of purification steps. The first process involves benzene washing, ultrasonic acid treatment, nitric acid treatment at 70°C and freezing in liquid nitrogen. Th…
The equilibrium domain arrangements of ferroelectric single crystals are significantly affected by loads and boundary conditions. Domain structures evolve towards a minimum energy state. In this paper, a variational method, which minimizes a functional based on free energy and dissipation, is developed to model the ev…
Poster
Structure of periphytic algae community in different natural substrates (Eichhornia azurea Kunth, Nymphaea amazonum Martius and Zuccarini and Oxycaryum cubense (Poeppig and Kunth) Lye) was analysed in a semilotic environment permanently connected to the Paraná River, from the Upper Paraná River floodplain. Samples wer…
This project discusses about the study of the best parameters needed in order to perform the best robotic welding result. The joints that will be focused are more on the "T-Joint" and "Butt Joint" welding, using the KEMPPI PROMIG 530 feeder with the ABB IRC5 controller robotic welding. A major concern involving proced…
Communication orale + résumé Communication orale + résumé
Carbon nanotubes exist as a macro-molecule of carbon, analagous to a sheet of graphite rolled into a cylinder. Multi Walled Nanotubes (MWNTs) can be considered as a collection of concentric SWNTs with different diameters. Carbon Nanotubes (CNTs) are produced by using Floated Catalyst Thermal Chemical Vapor Deposition…
International audience
CMR material with nominal composition (La0.7-xNdx) Ca0.3MnO3 (x=0.00-0.20) were synthesize and it's electrical and structure properties were investigated by the conventional solid state reaction method. All the data is collected by using four point probe and XRD. The result showed metal - insulator temperature TMI is…
Strukturmekanik är den del av fysiken som beskriver hur olika material, som formats och sammanfogats till strukturer, bär sina laster. Kunskapen om dessa strukturers verkningssätt kan användas i en skapande process där hållbara och effektiva, funktionella och uttrycksfulla byggnadsverk utformas. Den här läroboken i st…
The problem of increasing the resource power turbine through the introduction of squeeze film dampers in a fulltime design support is considered. The differential equations of the rotor motion with its design features are drawn. The results of the calculation of forced oscillations of the system and analyzes the feasi…
A series of π-extended phosphorescent palladium(II) and platinum(II) porphyrin complexes were synthesized, in which additional benzene rings are fused radially onto at least one of the four peripheral benzo groups. The photophysical properties of the metalloporphyrins palladium(II)-meso-tetra-(4-fluorophenyl)mononapht…
Metal Oxides compounds, L1AIO2, AI2O3, Fe203 have been synthesized. Thermogravimetry and differential scanning calorimetry (TG-DSC), and elemental analysis were used to study the thermal behavior of these compounds. The TG- DSC curves show the LiA102, AI2O3, Fe203 compounds shows several weight losses. The thermal sta…
The report gives recommendation on the storage and the reporting of measurements from odd samples. It is important that the report contains the measurements and description of the measurements for later use. A recommendation for storing the measurements is making a simple database with a library function. The library…