Materials Literature
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In this paper, the NiCu alloy coatings were electroplated on the 304 stainless steel coupon. The XRD was used to identify the phase structure of the as-prepared products. The SEM and EDS were used to observe the surface morphology of the as-prepared coatings and the atomic composition of the as-prepared coatings, resp…
用共沉淀法和溶液原位聚合法分别制备了锌镍铜铁氧体粉末（ZNCF）及其聚邻甲氧基苯胺（POMA）复合物. 用粉末X-射线衍射仪（XRD）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）、振动样品磁强计（VSM）等分别表征了产物的结构、形貌、电磁性能. 结果表明，ZNCF/POMA复合物的组分之间存在一定的相互作用；POMA对ZNCF粒子的包覆能起到调控样品电磁性能的作用，复合物的磁性能随POMA含量的增加而减小，而电导率则相反；与单一组分相比，POMA/ZNCF复合物表现出更优良的电磁波吸收性能， w ZNCF 为20%的复合物的反射损耗峰值和有效带宽分别为-27.32 dB和8.81 GHz，峰值对应的共振频率为11.61 G…
Corporations often become potentially responsible parties (PRPs) at hazardous waste sites because of their past transportation or disposal of hazardous substances at such sites. Determining a PRP's potential liability for the assessment and cleanup of hazardous waste sites is a challenging effort and often results in…
The structure of Li0.03Na0.97Ta y Nb1 − y O3 ceramic solid solutions and the processes of its disordering with a change in composition and temperature have been studied by full-profile X-ray diffraction analysis and Raman spectroscopy. It was established that at room temperature the structure of Li0.03Na0.97Ta0.05Nb0.…
The thermodynamic approach was applied to predict the trend selectivity of industrial grade anion exchange resin Auchlite A-378 in chloride form towards iodide and bromide ions in the solution. The study was conducted by performing the Clˉ/Iˉ and Clˉ/Brˉ uni-univalent ion exchange reactions under gradually increasing…
Abstract The formation enthalpy of the BLi (B48Li52) intermetallic phase was measured with the use of the water reaction and the direct reaction calorimetric method. The phase was prepared of weighed amounts of B and Li in a glove-box filled with high purity argon. The BLi phase was confirmed with using the X-ray diff…
Approximately half of cephalosporin antibiotics of different generations are produced from 7-aminocephalosporanic acid, which to date is prepared by organic synthesis. Instead of organic synthesis, a two-step enzymatic process is gradually being developed. The first step is enzymatic oxidation of natural antibiotic ce…
“Energy stored is the energy produced”- this is a popular saying which emphasize the importance of efficient energy storage. Energy crises are very prominent nowadays. Hence, the energy storage devices have become a topic of intense research among the scientists and researchers all around the world. Ultracapacitor is…
Object oriented finite element analysis (OOF2) is used to estimate the thermal and mechanical properties of WC– Al 2 O 3 composites. In the present work, five compositions of 10%, 20%, 30%, 40% and 50% Al 2 O 3 (by volume) are studied. Young's modulus, thermal conductivity and thermal expansion coefficient are estimat…
A materials engineering strategy that combines a breakthrough development in renewable polymer synthesis with an advancement in petroleum-derived plastics recycling is reported by K. Hearon and co-workers on page 1552: polymeric nanocomposites composed of a naturally derived rubber matrix phase and a recycled polystyr…
Recently, nanomaterials are developed in the form of nano-films, nano-crystals and nano-pores. Lanthanide phosphates as a material find extensive application as laser, ceramic, sensor, phosphor, and also in optoelectronics, medical and biological labels, solar cells and light sources. Among the different kinds of rare…
In this work, we report, optical properties of Cd1-xSnxTe quantum dots (x= 0.05, 0.10 and 0.15) synthesized in water using thioglycolic acid (TGA) as a modifier agent. The optical characterization of the samples was performed through absorption (UV) and photoluminescence spectra (PL). A red shift absorption and fluore…
PLMNT3/75/25 ceramics were prepared by uniaxial hot-press sintering method and conventional sintering method, respectively. X-ray diffraction (XRD), scanning electron microscopy (SEM) and impedance analyzer were used to measure the properties of the PLMNT ceramics. PLMNT ceramic with pure perovskite phase was fabricat…
We demonstrate magnetic metal-polymer composite microshell particles having a single nanoscale hole in the metal microshell layer. We load the surfaces of these particles with temozolomide (TMZ), a common brain cancer chemotherapeutic, and confirm loading via UV-vis spectroscopy.
In order to investigate and predict effects of preparation parameters on wear mass loss of Ni-SiC composite coatings, Ni coatings and Ni-SiC composite coatings were prepared on steel substrates by electrodeposition process. The results showed that the contents of SiC particles increased with density of pulse current a…
An optical system which collimate the light of LED uniformly is proposed in this paper. This optical system consist of two part of optical surface. First a TIR lens collimate all of the light of the LED parallel to the z axis. Then the first reflector redirect the collimating light to a uniform distribution and the se…
The structure and magnetic properties of multi-walled carbon nanotubes produced by catalytic pyrolysis of methane have been investigated by means of mutually complementary physical methods. The average sizes and number of carbon layers forming nanotubes, smearing of the density of states near the Fermi level, degenera…
The electrocatalytic oxidation of formaldehyde on Nickel-Poly (o-toluidine) - polyvinylalcohol modified glassy carbon electrode (Ni-P(OT)-PVA/GCE) was developed. This involves in situ electropolymerization of o-toluidine at GCE, which is following to the incorporation of Ni (II) to polymeric layer by immersion of modi…
The Stokes-Kirchhoff theory is used to study the ultrasound absorption coefficient in 33 liquid metals (25 metals are analyzed for the first time) at the melting temperature. A relation between the absorption coefficient and the conduction electron concentration is found. The ratio of the absorption coefficient caused…
Theoretical estimation of the equilibrium charge distribution of carbon and oxygen ions passed through a matter is obtained. The coefficient considering the effect of density on the charge distribution of these ions is calculated for an amorphous medium consisting of atoms with the nuclear charge Z t (Z t ≤ 54). An os…