Materials Literature
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Amb aquest projecte es preten trobar la solucio mes optima possible en el disseny d'una maquina encunyadora tenint en compte els diferents requeriments demanats. Una maquina d'encunyar s'utilitza per assenyalar el tall, tallar, realitzar emboticions o perforar xapes metal·liques, lamines de plastic, papers i cartons s…
An alternative to conventional CMP termed “pad-in-a-bottle” (PIB) polishing is reported, in which the polyurethane polishing pad is replaced by a stiff polycarbonate counterface, and polyurethane beads 10–50 µm in diameter are used in conjunction with slurry and slurry particles to achieve planarization. Blanket oxide…
In the semiconductor industry, the thinning of wafer is carried out by back grinding in two steps; coarse grinding and fine grinding. In this work, a new slurry free abrasive pad was developed to perform the thinning process of Si wafers with a single lapping step to achieve higher removal rate and lower roughness. Di…
Different fuel element bundle models used to calculate the coolant and fuel cladding temperatures inside fuel assemblies have been analyzed as applied to sodium-cooled fast-neutron reactors. The drawbacks of the existing models have been identified. A bundle model based on an experimental study into the actual arrange…
After increasing the power output of heat supply reactor «MASTER» by insertion of the annular channel with coolant, feedback coefficients are deteriorated. Thereby, there was need to find ways for changing reactivity coefficients in new reactor design and at the same time to save natural circulation, low core pressure…
Finite-element thermal stress modeling at the glass-ceramic to metal (GCtM) interface was conducted assuming heterogeneous glass-ceramic microstructure. The glass-ceramics were treated as composites consisting of high expansion silica crystalline phases dispersed in a uniform residual glass. Interfacial stresses were…
According to the status measurement method of fine iron powder, we design an improved detection method to test grade of fine iron powder. We implement the function of on-line detection for fine iron powder. The method adopts the principle of balancing coil detection technology. We design and debug sensor and test circ…
Sintering behavior of 3%yttria-stabilized zirconia was comparatively studied using a spray-dried powder produced by a domestic and global company. Quality of the sintered block was analysed in terms of relative density, shrinkage rate, grain growth, hardness, and fracture toughness. Relative density, shrinkage rate, a…
Proteins and their interactions with each other are of interest for fundamental research as well as numerous applications in biology, biochemistry or medical and pharmaceutic industry. In recent years, research in our group has shown that trivalent metal salts can cause a rich phase behavior in aqueous protein solutio…
Inkjet technology was applied to develop a standard contaminated wafer for quantitatively and qualitatively evaluating the cleaning efficiency of a post-CMP cleaning process. Aiming at the ultimate goal of forming regular and repetitive dot patterns, each of which consists of one contaminant particle, we controlled th…
In this paper, the dynamic response under blast loading of the blast wall, shear wall and common wall is simulated by ANSYS LS-DYNA simulation software. By analyzing the overpressure peak and stress changes of wall under the blast loading, we can get different material properties of the wall against overpressure, and…
A Oxalis pes-caprae L. é uma planta da família Oxalidaceae oriunda da África do Sul e \nsubespontânea na região mediterrânica e Europa Ocidental. De entre os compostos \npresentes nas folhas desta planta destacam-se os flavonóides, nomeadamente os derivados \nda luteolina e apigenina. Os flavonóides são um grande grup…
Journal of Applied Mathematics and Computational Mechanics, Prace Naukowe Instytutu Matematyki i Informatyki, Politechnika Częstochowska, Scientific Research of the Institute of Mathematics and Computer Science, Czestochowa University of Technology
The unique proprieties exhibited by nanoscale particles compared to their macro size counterparts allow for the creation of novel neural activity manipula-tion procedures. In this sense, gold nanoparticles (AuNPs) can be used to stimu-late the electrical activity of neuron by converting light into heat. During this di…
It is well known that nanostructured metals can exhibit significantly improved properties compared to metals with conventional grain size. Unfortunately, nanocrystalline metals typically are not thermodynamically stable and exhibit rapid grain growth at moderate temperatures. This severely limits their processing and…
To measure space charge density around UHVDC transmission lines, a measuring device is developed based on air filtration methods. The device, which uses STM32 microcontroller as the core controller, collects charged particles in the air by adsorption material. Through the charge to voltage converting circuit, charges…
The aggregative stability of binary mixtures of silica hydrosols of the Ludox TM brand and solutions of acrylic polymers of the Magnaflok brand have been studied by the methods of viscometry, turbidimetry, electrophoresis, and dynamic light scattering. A decrease in the aggregate stability of colloidal silica and conf…
The topology and channel width in Network-on-Chips (NoC) impacts the throughput and latency and therefore the area of deployment. In this paper an NoC based on a three dimensional, toroidal rectangular honeycomb topology using a two tupled (x, y) address, is discussed. It employs a minimal and deterministic routing al…
The mission of the United States Department of Energy's Office of Environmental Management is to complete the safe cleanup of the environmental legacy brought about from five decades of nuclear weapons development and go vernment - sponsored nuclear energy re search. S ome of the waste s that that must be managed have…
According to Paul et al.'s model [1], behavior of CMP slurry abrasives during polishing was modeled as an adsorption/desorption reaction on sites of polishing pad. The model showed a saturation relationship between removal rate and abrasive concentration. In this study, we extended this concept to include repulsive fo…