Materials Literature
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Samples of Ca1−xSrxHfO3 with x = 0.25, 0.50 and 0.75 have been studied. These oxides were synthesized using the high temperature solid state reaction method that can produce oxygen vacancies. The lattice and the hyperfine interaction parameters were determined. From these data it is possible correlate the behaviour of…
Collagen V, a fibrillar collagen with important functions in tissues, assembles into distinct chain associations. The most abundant and ubiquitous molecular form is the heterotrimer [alpha1(V)](2)alpha2(V). In the attempt to produce high levels of recombinant collagen V heterotrimer for biomedical device uses, and to…
Based on compressing coordinate transformation (CCT) that transforms a region into a smaller region, a rigorous method for designing a cloak with controllable open window is proposed. The open cloak consists of a portion of an ideal closed cloak and an independent system whose position and parameters can be controlled…
(Bi1−xLax)0.5Pb0.5Fe0.5Ti0.5O3 (BF‐PT) ceramics were prepared for x = 0.0, 0.2, 0.3, 0.4 and 0.5 using solid state reaction method. x = 0.0 samples were found to have tetragonal perovskite structure, same as that of PbTiO3 (PT), while in La‐substituted samples tetragonal distortion reduced and system turned cubic at 4…
The preliminary phytochemical screening was carried out on the crude extracts of the leaves of Butea Monosperma Lam along with ash values and extractive values on the powdered drug. The crude extracts were investigated for their anthelmintic activity against earthworms (Pheretima posthuma), roundworms (Ascardia galli.…
The photo-induced insulator-metal transition for silicon-based VO2 nanofilm is studied by THz time-domain spectroscopy (THz-TDS). Obvious variations of THz ray transmittance are observed before and after the CW laser beam exciting, and the conductivity of metallic-phased VO2 film in the THz region is calculated in the…
In this paper the possibility obtaining of upper bainite, lower bainite and martensite or their mixture in nodular cast iron with carbides has been presented. Conditions have been given, when in nodular cast iron with carbides for cooling at first in the form, then air-cooling auste-nite transformation to upper bainit…
The present paper presents an applicative solution of mathematical modeling and simulation for resistive heating elements. A frequently problem, which appears during the use of these ovens, is the rapid aging who leads to the break down of the heating resistors. This model allows the simulation of the transient self-h…
Hydrogen diffusion was studied in API grade X70 pipeline steel, simulated coarse grained heat affected zone (HAZ) and weld metal of type HBQ Coreweld using the electrochemical permeation technique.Hydrogen diffusion measurements were carried out at 25 • C, 50 • C and 70 • C. The results were similar for all three meta…
Biointegration is essential for the successful performance of implanted materials and devices within the human body. With an increasing number and wide range of implant procedures being performed, it is critical that materials scientists and engineers effectively design implant materials which will create a positive b…
Poly (3-hydroxy alkanoate)s, PHAs, have been very attractive as biomaterials due to their biodegradability and biocompatibility. These hydrophobic natural polyesters, PHAs, need to have hydrophilic character particularly for drug delivery systems. In this manner, poly (ethylene glycol) (PEG) and hydrophilic functional…
The paper presents a detailed morphological analyses by light (LM) and scanning electron microscopy (SEM) of two short-striated diatoms of the genus Staurosirella D. M. Williams & Round. The fi rst was encountered in the periphyton of a river in Oregon (U.S.A.) and is described here as a new species, S. krammeri sp. n…
有 Mn0.4Zn0.6MgxFe (2x ) O4 的作文的代替镁的 MnZn 铁酸盐(x=0.00， 0.05 ) 被 citrate-EDTA (ethylenediamine tetraacetic 酸) 准备 complexing 方法。晶体结构，表面形态学和锻烧的样品的电磁的性质被 X 光检查衍射(XRD ) 描绘分析，扫描电子显微镜学(SEM ) 和网络分析器(Agilent 8722ET ) 。没有另外的中间的阶段，所有 XRD 模式显示出尖晶石类型 MnZn 铁酸盐的单个阶段。格子参数和平均粒子尺寸与镁的替换增加了。微波样品的电磁的性质从 2 ～ 18 GHz 在频率范围被学习了。这被显示出价值并且与镁的替换稍微…
The one-dimensional problem of selecting the triple helix with the highest volume fraction is solved and hence the condition for a helix to be close-packed is obtained. The close-packed triple helix is shown to have a pitch angle of $v_{CP} =43.3 ^\circ$. Contrary to the conventional notion, we suggest that close pack…
A small fi lamentous centric diatom, Hyalodiscopsis plana (Kozyr.) Kozyr. & Lastivka, was collected from a subtidal Macrocystis pyrifera (L.) C. Agardh kelp forest off the coast of California. Valves are loculate and bear bifurcated, wrench- like marginal spines which establish a permanent connection between sibling v…
The growth of a Mn-doped LiAlO2 single crystal by the Czochralski (CZ) method and the characterization of its spectroscopy and thermoluminescence (TL) are presented. The X-ray rocking curve and chemical etching analysis show that the as-grown crystal has good crystallinity. The full-width at half-maximum (FWHM) of the…
Metal nanoparticles are highly oxidizable ; therefore, their stabilization by suitable passive surface layer is normally necessary. One of the major mechanisms behind metal toxicity has been attributed to oxidative stress. A growing amount of data provide evidence that metals are capable of interacting with nuclear pr…
Recent innovation in nanotechnology has shown wonderful promise to revolutionize drug delivery applications by generating novel ‘nano-deliveries’ that might allow more efficient targeted delivery of various drug molecules, which will reduce or limit systemic side-effects and allow for more efficient use of the drug. B…
A natural- based nanocomposite film consisting of chitosan, montmorillonite (MMT) and cashew nut shell liquid (CNSL) was synthesized. The nanocomposite was prepared by mixing a suspension of clay particles (filler, MMT) with a solution containing chitosan as the macroscopic polymer matrix. In this study, it was propos…
As part of the fourth Silicones and Silicone-Modified Materials symposium, it is useful to reflect on the properties of the mainstay of the silicone industry, polydimethylsiloxane (PDMS), and how these properties relate to the varied applications of this exceptional polymer.