Materials Literature
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通过自配的SORNID系列清洗液研究了其对多晶硅“碳头料”的清洗效果及清洗“碳头料”后对多晶铸锭的影响。采用红外探伤检测仪（IR探伤）、微波光电导衰减仪（μ-PCD）和傅立叶变换红外光谱仪（FTIR）进行了综合表征。研究表明：SORNID-3清洗液对“碳头料”清洗效果明显，使用120kg清洗后“碳头料”完全满足多晶铸锭的工业要求，所铸晶锭具有厘米级大晶粒，呈柱状晶粒结构；平均少子寿命能达到3．57gs，晶棒少子寿命分布呈倒U型，收益率能达到69．16％；硅片替位碳含量低于10ppm。
The paper considers the problem of normal interaction of the aluminum isotropic compact cylindrical projectile with orthotropic monolithic and spaced targets in a range of load velocities from 750m/s to 3000 m/s. Fracture of anisotropic targets is investigated, the comparative analysis of efficiency of their protectiv…
Artykuł omawia wybrane problemy związane z zaliczeniem do podatkowych kosztów uzyskania przychodów wydatków związanych z udostępnianiem własnych maszyn i narzędzi podmiotom trzecim (tzw. tooling). Autor koncentruje się na analizie dopuszczalności uznania toolingu za środek trwały. Przeprowadzona przez autora analiza z…
Artificial tissues made from lifelike proteins could give "growing your own" in a medical context an entirely new meaning.
The formation of large, complex structures from small building blocks through self-assembly is widely seen in proteins and provides a tool for the creation of functional nanoscale devices. However, the factors controlling protein self-assembly are complex and often poorly understood. Peroxiredoxins are a large family…
Powder of composite materials based on polyphenylene sulfide was obtained by the method of mechanical activation followed by application on substrate as a protective coating. The substrate was made of steel 45 08H18N10 Steel, Cast Iron SCH21, Titanium W-1-0, magnesium alloy and brass AMg2 LAMsh. To maximize the physic…
The effect of head group modification on the solubility and antimicrobial potency of some quaternary nitrogen surfactants (QNSs) was investigated. Using high yielding Menshutkin reactions, a homologous series of monomeric, dimeric and polymeric QNSs based on aliphatic ammonium and aromatic pyridinium head groups were…
Two different hot work tool steels, QRO 90 and QRO 80N were investigated using atom probe tomography. QRO 90 is a commercial alloy while the other QRO 80N is an experimental test alloy. The main composition of QRO 90 is 0.38C-2.6Cr-2.3Mo-0.9V-0.75Mn (wt%) whereas QRO 80N has the composition 0.38C-1.7Cr-2.7Mo-1.2V-1.1M…
Resumen del póster presentado a la conferencia: "Graphene Nanosciene: From Dirac Physics to Applications" celebrada en Granada (España) del 9 al 13 de septiembre de 2012.
Objective: The thalamus is an important relay of pain processing pathways and exerts a pivotal role in cortical excitability control.A number of works have suggested that thalamic abnormalities may contribute to migraine pathophysiology [1][2][3][4][5][6][7] , but so far no study has examined the structural integrity…
Microstructural modifications of vitreous silica QU-1 are investigated in this paper, obtained by hydrolysis of silicon tetrachloride in a hydrogen-oxygen flame, has a high chemical purity, absence of fine-grained heterogeneity and a high content of hydroxyl groups. Pre-machined surface of vitreous silica were subject…
A comparative analysis of electrocaloric and barocaloric efficiency in ferroelectrics Rb x(NH 4) 1-xHSO4 and TGS is performed. A good agreement was found between intensive electrocaloric effects measured experiшentally and calculated using electric equation of state. Barocaloric effects were evaluated by analysis of t…
Quantum dots (QDs) have proven the potential for imaging contrast agents by the bright luminescence, the resistance against photobleaching, and the multiplexing capability. For the application of a targeted image contrast agent, hyaluronic acid-quantum dot conjugates (HA-QDs) were synthesized via a simple and novel el…
We have studied the effects of doping both non-magnetic and magnetic ions on the phase transitions and multiferroic ordering in two multiferroic oxides; Ni3V2O8 and FeVO4. Magnetic, dielectric, specific heat, polarization and AC susceptibility measurements were used to track changes in phase transition temperatures. W…
We present an efficient model for the simulation of phase-transformations and plasticity in polycrystalline materials. At the micro-scale, we implement a temperature-dependent scalar-valued phasetransformation model that is coupled to plasticity. The model allows to take into account an arbitrary number of independent…
This work presents the fabrication and characterization of 3 dimensional electrodes from pyrolysed carbon with spacing and diameter approaching the resolution limit of standard UV photolithography. Our carbon pillar arrays have a diameter of 1.4 µm, spacing of 5 µm and aspect ratio of about 8. We show their characteri…
Modern filter carbon fiber sorbents (CFS) marks the ASM-3, and ion-exchange fiber VION nonwovens have the highest efficiency in water purification from organic pollutants, heavy metal and hardness ions including Ca +2 and Mg +2.
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2012.
No processo de enovelamento as proteínas seguem o principio de “mínima frustração”, garantindo ao estado nativo o seu mínimo global de energia e a sua estabilidade termodinâmica. Apesar de, a proteína estar no seu estado nativo, esta condição não impede o surgimento de algumas interações energeticamente desfavoráveis,…
L'imagerie moleculaire optique joue maintenant un role essentiel dans le diagnostic pre-clinique et le developpement de nouveaux medicaments. En effet, c'est un outil precieux dans la detection et le suivi de cellules vivantes que ce soit en utilisant de simples agents de marquage ou des sondes plus sophistiquees, dit…