Articles Related to structure

Cu2FeSnSe4 (CFTSe) thin film were synthesized on glass substrate by thermal evaporation method at Ts=400° C, starting from elemental powders mixed by a mechanical alloying process. The structural, morphological, compositional, optical and electrical properties of CFTSe semiconductor have been investigated by X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X-ray analysis (EDAX), spectroscopic ellipsometry (SE) and Van Der Pauw technique, respectiv

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The study investigated the effects of supplementing the same level of concentrate in different seasons on the growth performance, rumen fermentation, serum biochemical index, and rumen microflora changes in yaks, to provide guidance on accurate feeding of yaks in cold and warm seasons. 12 healthy yaks weighing (124.21±15.64) kg were selected for the experiment, with a warm season group from August to October and a Cold season supplemental feeding group from October to December. The results showed that the mean daily gain was significantly higher in the warm season grazing group than in the cold season grazing group (p<0.05). Rumen fermentation, serum biochemical index, and rumen microflora changes also varied significantly between the two groups (p<0.05).

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n recent years’ nanostructure materials (NSMs) have been of great interest as catalysts and other applications because of their unique textural and structural characteristics. Out of various biomaterials employed for NPs synthesis, plant extracts have attracted much attention due to their effectiveness, availability, and green characteristics. Due to the range of chemical constituents, currently, the incorporation of the Aloe chemical constituents into other substances makes the biosynthesis of NPs which are very necessary for the formation and applications ofAloe-based NPs

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We report the theoretical investigation of type-I InGaAsBi/InGaAs superlattice short-wave infrared detector nearly lattice matched to InP substrate such as the quaternary InGaAsBi/InGaAs layer is the absorption region. The used bismuth composition is about 5.5%, the Bi incorporation induced a cut-off wavelength red-shift from 1.6 µm to 3µm at room temperature (RT), and showing a band gap reduction about 362meV.

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Different types of Glutaredoxins (GRXs) that play a major role in cellular anti-oxidative reactions have been studied for their structure and function from various organisms. Glutathione (GSH), an anti-oxidant with several medical benefits, binds to GRXs. This work has structurally characterized GRX2 from C. reinhardtii (CrGRX2) using biophysical, molecular modelling, and isothermal titration calorimetry (ITC) techniques. CrGRX2 adopts the classical GRX-Trx fold consisting of five β-strands surrounded by four α-helices that bind to GSH with moderate strength through a cysteine residue. The residues involved in the interaction closely match with those observed for E. coli and human counterparts, indicating that the cellular GSH-GRXs antioxidant system is highly conserved.

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Novel Ni-Re super-alloy catalyst system is found for rapid hydrogenation of toluene to methylcyclohexane (MCH) in a one-pass reactor under mild reaction conditions. The novel bimetallic Ni-Re alloy catalysts exhibit the remarkably enhanced activity and stability for hydrogenation of toluene by comparison with monometallic Ni catalyst. The catalytic performance of novel Ni-Re catalyst is compared with that of Pt catalysts for hydrogenation of toluene. The better activity maintenance of the Ni-Re catalysts than the Pt-based catalysts are found. The alloying effect of Ni with Re is identified by XRD and EXAFS measurements.

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The classical Fisher exact test [1], which is unconditionally the uniformly most powerful unbiased (UMPU) test, requires randomization at the critical value(s) to be of size α. Obviously, one needs a non-randomized version of this. Rejecting the null only if the test-statistic’s outcome is more extreme than the critical values, reduces the actual size considerably. The modified Fisher exact test introduced in [2] additionally rejects the null when the test attains the critical value c(t) and the randomization probability γ(t) (that depend on the total number of successes T) exceeds a threshold γ0, which is determined such that, for all values of the nuisance parameter, the size of the unconditional modified test is smaller, but as close as possible to α. This greatly improves the size and power of the test as compared to, for example, the conservative nonrandomized Fisher exact test, while controlling the Type 1 error rate.

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The coronavirus disease 2019 (COVID-19) has be designated a pandemic less than 4 months after its first outbreak. Due to the novelty of the virus, there is little understanding of how ecological factors affect transmission of the coronavirus. This study aims to determine the relationship of temperature, absolute humidity, and health infrastructure on COVID-19 transmission and mortality.

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Antenatal alcoholization leads to a number of specific disorders in the offspring organism, grouped into the concept of fetal alcohol syndrome, which is included in the fetal alcohol spectrum disorders. The negative effects of alcohol on the developing fetal brain include structural abnormalities of the brain, neurological, behavioral and cognitive defects.

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While the gap is widening between developed and developing countries in the field of classical animal genetics and breeding, genomic tools are becoming the method of choice in developed countries. The objectives of this study were to 1) demonstrate by a real case how the lack of suitable breeding strategies can be a major threat to autochthonous sheep breeds improvement and 2) show how genomic tools could be an efficient alternative tool to reverse the decrease of native breed productivity. A total of 54,476 fat tail Barabrine lambs from 77 flocks recorded during the period 2010-2014 were used in this study.

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Ground state properties of ATiO3 (A = Ca, Sr, Ba & Pb) pervoskite structures in cubic and tetragonal phase were studied by tight binding linear muffin-tin orbital (TB-LMTO) method in the framework of density functional theory (DFT) with the atomic-sphere approximation (ASA).

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High entropy alloys (HEAs) are alloys that contains multiple elements, often five or more principal elements in equiatomic or near equiatomic ratio with or without minor elements. As felt from the name, high mixing entropy is the sole parameter to decide the solid solution alloy formation in HEAs but, the mutual interaction between elements are key parameters to predict the phase formation in HEAs as proposed by some researchers. In this review the guideline for alloy design in HEAs for the formation of solid solution phases are proposed on basis of atomic size difference (δ), mixing entropy (ΔSmix), mixing enthalpy (ΔHmix), valence electron concentration (VEC) and electronegativity difference (Δχ).

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Terrorists and insurgents have proven their ability to develop effective improvised explosive devices, with each configuration providing insight into the type of target and type of attack. Across rail systems, bus networks, and aviation infrastructure, transportation targets throughout Africa are plentiful and have come under attack. The targeting of transportation infrastructure can only be seen as a direct attack against civilians. Even though the conveyance may be funded or operated by the government, the civilians who fill the conveyance or conveyance’s ‘fixed’ sites are affected the most.

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A translucent UV protecting poly (methyl methacrylate) (PMMA)/TiO2 nanocomposite has been fabricated using anatase TiO2 nanoparticles by solution method. The myristic acid capped titania nanoparticles were synthesized via a simple sol-gel method, involving hydrolysis of titanium tetra isopropoxide (TTIP).

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With this special issue of JMSN we are pleased to present significant contributions to a fascinating topic in the field of materials nanostructing, which is the anodization of valve metals. By this treatment porous oxides of controlled geometry can be grown on the respective metal surfaces. To date, aluminum (Al) has been used most often, as confirmed in this special issue where nine out of ten contributions deals with its anodization.

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The anodization of aluminum foils having micrometer thickness is a common process and results in hexagonally self-ordered alumina membranes. However, anodic aluminum oxide (AAO) membranes fabricated from nanometer-thin films present new challenges to the anodization process, since aluminum films adheres poorly on supporting substrates and the smoothness of the film is highly related to the kind of substrate.

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The design of an electrochemical reactor for the preparation of self-supported comparatively thin (up to 10 μm) and large area (up to 50 cm2) anodic alumina membranes is described allowing growth of porous alumina at high applied potential (up to 150 V) without burning.

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Vertical Cu2ZnSnS4 (CZTS) nanowire arrays have been synthesized via two-step electroplating method into anodized aluminum oxide template. For deposition of CZTS nanowires, anodized aluminum oxide (AAO) was used as the growth mask for the growth of the nanowires. AAO templates with hole sizes of 70 nm in diameter were used in the experiments.

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In this paper, we report on the synthesis of BaTiO3 nanowires via the anodic aluminum oxide template method. To fill in the precursors of BaTiO3 into anodic aluminum oxide templates, the vacuum and drop loading method developed in our previous study was used. Ba(CH3COO)2 (barium acetate) and C12H28O4Ti (tetraisopropyl orthotitanate) were used as Ba and Ti sources, respectively. Anodic aluminum oxide membranes with the through-hole diameter of ~200 nm were used as the template for BaTiO3 nanowires.

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