Materials Literature
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Frank Bauer, Matthew Hiscock, Christian Lang; Advances in the Analysis of Gunshot Residue and Other Trace Evidence using EDS and EBSD in the SEM, Microscopy and
Supercapacitors are finding wider applications in modern power systems due to a controllable fast dynamic response. Use of power electronically interfaced supercapacitors for frequency support is a proven technique. In practical applications the heat generated from the Equivalent Series Resistance (ESR) can significan…
Interphases are usually considered to be responsible for the physical properties of nanocomposites unexplainable by general mixture laws. The prediction of the effective dielectric permittivity of nanodielectrics needs to consider the intrinsic dielectric permittivity of the interphase and its volume. However, no reli…
In this paper the results of an experimental study concerning the vegetable and mineral oil impregnated paper subjected to thermal ageing is presented. Using activation energy method, the paper lifetime is calculated. Samples of vegetable and mineral oil impregnated paper were aged at 155 °C. Dielectric properties, wa…
Summary Electrospun TiO2 nanofibers incorporated with graphene and C60 nanoparticles at 0, 1, 2, 4, and 8 wt.% were produced using poly (vinyle acetate), dimetylfomamide, and titanium (IV) isopropoxide. The resultant nanofibers were heat treated at 300 °C for 2 hrs in a standard oven to remove all the organic parts of…
In this review article, we give a brief overview of heavy fermions, which are prototype examples of strongly correlated electron systems. We introduce the application of physical pressure in heavy fermion systems to construct their pressure phase diagrams and to study the close relationship between superconductivity (…
Cu3Ge has been pursued as next-generation interconnection/contact material due to its high thermal stability, low bulk resistivity and diffusion barrier property. Improvements in electrical performance and structure of Cu3Ge have attracted great attention in the past decades. Despite the remarkable progress in Cu3Ge f…
CaO–B2O3–SiO2 (CBS) glass-ceramics containing ZrO2 were prepared by conventional melting and heat treated crystallization method. The effects of ZrO2 on the crystallization behavior, sintering characterization and dielectric properties of the glass-ceramics were analyzed respectively. The results indicated that ZrO2 a…
In this paper, a digital adaptive notch filter (DANF) based control algorithm is presented for a solar photovoltaic integrated unified power quality conditioner (PV-UPQC). Two DANFs are used for extraction of fundamental active current amplitude and also fundamental grid voltage template. The PV array is integrated di…
The paper analyzes the most popular models of photosynthesis and growth of marine phytoplankton in the literature and demonstrates their limitations. A new approach to modeling is proposed and used to obtain new models of marine phytoplankton photosynthesis and growth. An important feature of the proposed models is th…
Organic photovoltaic devices (OPVs) using chiral cyclohexene-fused [C 60 ]-fullerene derivatives that have ( l )-menthyl ester moiety have been prepared and their properties evaluated as acceptor molecules with P3HT polymer: racemic cyclohexene-fused [C 60 ] fullenene, ( RS )-( 1R , 2S , 5R )- 2a showed higher PCE (2.…
In this work, a multivariable control approach for maintaining the hydrogen concentration as well as the differential pressure between the anode and cathode compartments, known as the fuel over-pressure, in a polymer electrolyte membrane fuel cell (PEMFC) with anode re-circulation is explained. To achieve the control…
A mild fluorination method for pyrroles, based on anionic phase‐transfer catalysis by using Selectfluor, a lipophilic phosphoric acid, and a base in an apolar solvent is described. The thus obtained fluorinated pyrroles bearing a wide variety of functional groups are attractive building blocks for medicinal chemistry.
A series of six anti-perovskite fluorides of the type [Cu(H2O)4]3(M1-xM'xF6)2 (where M and M' = V, Cr, Mn, Fe as well as M = Fe and M' = V and Cr) was synthesized as high-quality single crystals via a mild hydrothermal route. These materials belong to a class of perovskite-based structures in which the anions and cati…
In the spline rolling process with round dies, additional kinematic compensation is an essential mechanism for improving the division of teeth and pitch accuracy as well as surface quality. The motion characteristic between the die and workpiece under varied center distance in the spline rolling process was investigat…
An efficient multicomponent protocol has been developed to access two different kinds of peptide–ecdysteroid conjugates. The approach exploits the reactivity of the 6-keto-7-ene group of 20-OH-ecdysone, allowing the unprecedented preparation of 6-amino and 6-isocyanide derivatives. The ecdysteroid derivatives were fur…
// Xin Wang 1,2,3,* , Yaling Yu 1,4,* , Miaozhong Li 1,2,3 , Ali Alkhawaji 5,6 , Chuan Chen 1,2 , Xiaolin Liu 1,4 , Junqun Jiang 1,4 , Jianse Zhang 1,4 , Zhibin Wang 1,4 , Ting Li 1,4 , Weiwen Zhang 2,3 and Jin Mei 1,4,7 1 Institute of Bioscaffold Transplantation and Immunology, Wenzhou Medical University, Wenzhou, Ch…
Background: One of the acrylic resins properties is the water absorption that affect on the hardness changes of the acry/ic resins. This /aboratory experiments studied disinfectant Alkaline peroxide and celery (Apium graveolens L.) extract 75% effect on the hardness changes of acry/ic denture base resins materia/. Pur…
It is found that the radial geometry does not stabilize the evolution of instability in the displacement of a more viscous fluid by a less viscous fluid from a circular Hele-Shaw cell with a sink. A linear analysis shows the absolute instability of the radial displacement front. The appearance of isolated fingers is o…
A new physicomathematical model is proposed for describing the process of melting of aluminum nanoparticles, which takes into account the dependences of thermophysical variables on the temperature and particle size obtained by the molecular dynamics method. The study is performed for samples with spherical, cylindrica…