Materials Literature
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Two novel porphyrins, ZnP(SP)CNCOOH and ZnPCNCOOH, bearing cyanoacrylic acid as an anchoring group were synthesized. Porphyrin ZnP(SP)CNCOOH contains a π‐conjugated spacer (SP) for improved electronic communication between the dye and the TiO2 electrode. The spacer bears polyethylene glycol chains to prevent dye aggre…
In this paper, the effects of rolling reduction rates on the microstructure of the NM360/Q345R composite were studied. With the electron backscatter diffraction(EBSD) contribution, the microstructure evolution and recrystallization of the bonded interface were mainly analyzed at various reduction rates (30%, 50%, 70%…
A new synthesis route for the zeolitic imidazolate framework ZIF-4 using imidazolium imidazolate is reported. Additionally, the ionic liquid-derived material is compared to conventional ZIF-4 with respect to the powder X-ray diffraction pattern pattern, nitrogen uptake, particle size, and separation potential for olef…
Alumina rich fly ash (ARFA) has been regarded as the alternative to bauxite in China. Hydrochloric acid process could be favored for alumina extraction, necessitating calcination of aluminum chloride hexahydate (ACH). In this work, the TGA/DSC results of ACH were used to suggest calcination procedures. Two-step calcin…
The article presents the results of tests carried out on S355JR steel of ferrite-pearlite and ferrite-bainite microstructures. The strength properties and fracture toughness were determined. The critical value of fracture toughness was determined at the moment of crack initiation by measuring of the stretch zone width…
With a design guided by computational fluid dynamics (CFD), additively manufactured from base metals and coated with metal catalysts using cold spray technology or electroplating, catalytic static mixers are used to replace fixed bed columns in continuous flow reactors. We have shown their versatility in gas-liquid hy…
In this study, we investigate different technologies to measure the specific capacitances C8of Nb/Al-AlOx/Nb Josephson junctions. They involve measuring Fiske mode resonance in long Josephson junctions, superconducting quantum interference device (SQUID) resonance, and Josephson plasma resonance. We find a logarithmic…
The European Union has implemented breeding programmes to increase scrapie resistance in sheep. A similar approach can be applied also in goats since the K222 allele provides a level of resistance equivalent to that of ARR in sheep. The European Food Safety Authority stated that breeding for resistance could be offere…
Keratin is a natural polymer found in hair fibers, skin, and nails. It has been investigated as a biomaterial since the 1970s, and has more recently been shown to have applications in healthcare such as medical devices and tissue engineering. Keratins are one of few intermediate filament forming proteins and demonstra…
Abstract Nature's energy needs are met by systems of renewable resources. Light is used to activate reduction of CO 2 while water is oxidized producing energy storage molecules like carbohydrates. Emulating such systems is a challenge. Here we report a visible light driven hybrid soft‐oxometalate based catalyst system…
Cobalt–carbon bond cleavage is crucial to most natural and synthetic applications of the cobalamin class of compounds, and here we present the first direct electronic and geometric structural characteristics of intermediates formed following photoexcitation of methylcobalamin (MeCbl) using time-resolved X-ray absorpti…
LOW DENSITY Fe-Mn-Al-Si STEELS Th e work presents the results of investigations into the structure and phase composition of newly developed high manganese steels of the X98MnAlSiNbTi24-11 and X105MnAlSi24-11 type. The average density of such steels is 6.67 g/cm 3 , which is 15% lower as compared to typical structural…
Nodal diffusion is currently the preferred neutronics model for industrial reactor core calculations, which use few-group cross-section libraries generated via standard assembly homogenization. The infinite-medium flux-weighted cross sections fail to capture the spectral effects triggered in the core environment by no…
We report on the photovoltaic parameters, photophysical properties, optoelectronic properties, self-assembly, and morphology variations in a series of high-performance donor–acceptor (D–A) π-conjugated polymers based on indacenodithiophene and quinoxaline moieties as a function of the number-average molecular weight (…
Abstract Metal/metaloxide based composite materials have wide spread applications in electrochemical sensors and fuel cell applications. Hence, the present work is directed towards the fabrication of cost effective and highly sensitive electrode material for cysteine sensing. In this work, Co‐Gd 2 O 3 nanocomposite is…
The adsorption of cis and trans 2-butenes on Pt(111) has been studied as a function of hydrogen coverage θ H by means of calculations based on density functional theory (DFT) with the inclusion of dispersion forces. All hydrogen coverages have been considered, from 0 to 1.00 monolayer (ML). For each case, the di-σ and…
The aim of this study is to investigate influence of selected parameters of gas tungsten arc welding on microstructure of MAR-M247 nickel based superalloy originating from turbine vane. MAR-M247 is a precipitation-strengthened superalloy which is widely used in aerospace engines. The main strengthening phase in this m…
The aerial parts of extensively used ethnomedicinal plant Mikania cordata (Burm. f.) Robinson growing wild in Bangladesh were investigated to isolate and characterize compounds responsible for the bioactivities of the plant. In the present study, a new derivatives of betulinic acid, 16-hydroxy betulinic acid [3β,16-di…
The behavior of grounding systems against waves with high-frequency content such as lightning or very fast transient overvoltages is completely different from the steady state. This paper presents a more flexible model of a grounding system with respect to frequency dependency of electrical parameters of soil and mois…
On-surface metalation of metal-free phthalocyanine derivatives is a simple and solvent-free way to fabricate MPc compounds. Using phthalocyanine (H 2 Pc) molecules on Ag(111) as an example, we investigated the atomic-scale mechanisms of on-surface metalation processes using first-principles calculations based on densi…