Materials Literature
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We assessed the photoluminescence performance characteristics of Mn 4+ -doped tetragermanate and silicogermanate phases with a benitoite-type structure. We observed a visible red emission based on the 2 E → 4 A 2 transition in the doped benitoite-type tetragermanate. The partial substitution of Si for Ge, resulting in…
Utilizou-se um Latossolo Vermelho distroférrico (LVdf) e um Neossolo Quartzarênico Órtico (RQo) que receberam diferentes doses de fósforo (P) e calagem, com o objetivo de avaliar o teor de fósforo disponível nos extratores Mehlich I e Resina de Troca Aniônica em condições de laboratório. O delineamento experimental fo…
Coronary artery perforation (CAP) is an infrequent yet potentially life-threatening complication of percutaneous coronary intervention. We report, for the first time, two cases of successful closure of guidewire-induced distal CAP with silk suture embolization using a microcatheter. This technique appears to be safe,…
The histidine kinase (HK) domain belonging to the light-oxygen-voltage histidine kinase (LOV-HK) from Brucella abortus is a member of the HWE family, for which no structural information is available, and has low sequence identity (20%) to the closest HK present in the PDB. The `off-edge' S-SAD method in macromolecular…
Here, we report the establishment of an experimental system based on liquid crystal (LC) micro-droplets on solid surfaces. These micrometre-sized LC droplets were formed by the dispersion of 0.5% (v/v) 4-cyano-4ʹ-pentylbiphenyl (5CB) dissolved in n-heptane onto an octadecyltrichlorosilane (OTS)-treated glass. Polarise…
3-Acetamido-3,6-dideoxy-d-galactose (Fuc3NAc) and 3-acetamido-3,6-dideoxy-d-glucose (Qui3NAc) are unusual sugars found on the lipopolysaccharides of Gram-negative bacteria and on the S-layers of Gram-positive bacteria. The 3,4-ketoisomerases, referred to as FdtA and QdtA, catalyze the third steps in the respective bio…
Abstract The identification of a new class of luminogens based on pyrrolo‐quinoxaline embedded coumarin (PQC) structures is reported. The reaction relies on the gold‐catalyzed hydroarylation reaction of appropriately substituted aryl alkynoates that produces molecules that exhibit solvatochromism and aggregation‐induc…
Abstract There has been a considerable surge of experimental inquiry in recent years into understanding the factors responsible for the corrosion inhibition efficiency of chalcones; however, the question of what actually determines the efficiency still remains a topic of debate. In this study, the dependence of the in…
This paper presents experimental evidence of the correlation between the magnetocrystalline energy (MCE) and the Barkhausen noise (BHN) signal in three API 5L steel samples. The angular dependence of the MCE in each sample was determined using the r.m.s. values of the BHN signal in the time band fr om saturation to re…
ABSTRACT In this study, a novel approach to toughen biobased epoxy polymer with different types of siloxanes was explored. Three different modified siloxanes, e.g., amine‐terminated polydimethyl siloxane (PDMS‐amine), glycidyl‐terminated polydimethyl siloxane (PDMS‐glycidyl), and glycidyl‐terminated polyhedral oligome…
Abstract Layered materials have several properties that make them suitable as high‐performance thermoelectric materials. In this study, we elucidated the potential of d 0 ‐electron layered complex metal nitrides, AMN 2 (A = Sr or Ba; M = Ti, Zr, Hf), with KCoO 2 ‐type and α‐NaFeO 2 ‐type crystal structures. The detail…
Halide-doped n -type samples of the Bi 2 Te 2.7 Se 0.3 solid solution have been prepared by hot-pressing melt-spun powders. The morphology of the powders and fracture surfaces of the hot-pressed samples have been examined by scanning electron microscopy, and the electrical conductivity, Seebeck coefficient, and therma…
The crystal structures of Rh2B and RhB2 at ambient pressure were explored by using the evolutionary methodology. A monoclinic P2₁/m structure of Rh2B was predicted and donated as Rh2B-I, which is energetically much superior to the previously experimentally proposed Pnma structure. At the pressure of about 39 GPa, the…
Abstract Five π‐expanded α,β‐unsaturated ketones have been prepared from a strongly electron‐rich benzofuran derivative via Knoevenagel reaction and aldol condensation. The incorporation of two 6‐didodecylaminobenzofuran‐2‐yl groups at the periphery of D ‐π‐A and D ‐π‐A‐π‐D molecules resulted in dyes with excellent so…
THE number of efforts in order to modify the properties ofpolymeric fibers by organic or inorganic particles has increasedin recent times because of increasing interest of fiber research inhightech fiber applications. In addition to these attempts, theinnovation of nanotechnology also leads to the development ofnanopa…
A complete experimental analysis of the microcellular injection process using Chemical Blowing Agents (CBA) with Gas Counter Pressure (GCP) and core‐back expansion is presented. Three different types of polypropylene, neat and charged, were mixed with two different CBAs and injected into a plate mold with varying proc…
Abstract Single‐source zinc β‐iminoesterate precursors have been used for the first time in the aerosol‐assisted chemical‐vapour deposition (AACVD) of ZnO thin films. Depositions at 450 °C on silica‐coated glass substrates produced strongly adherent films with excellent coverage of the substrate. The zinc β‐iminoester…
Green nanocomposites based on renewable plant oils and polyhedral oligomeric silsesquioxanes (POSS) have been developed. An acid-catalyzed curing of epoxidized plant oils with oxirane-containing POSS derivatives produced transparent nanocomposite coatings with high gloss surface, in which the organic and inorganic com…
In this paper, we give exact solutions for the convective viscous Cahn--Hilliard equation. This equation with a general symmetric double-well potential and Burgers-type convective term was introduced by T. P. Witelski (1996 Studies in Applied Mathematics 96 , 277–300) to study the joint effects of nonlinear convection…
We introduce a class of metamaterials with uniformly balanced gain and loss associated with complex permittivity and permeability constants. The refractive index of such a balanced pseudopassive metamaterial is real. An unbounded uniform pseudopassive medium has transport characteristics similar to those of its truly…