bluuebunny/crossref_metadata_2025_split huggingface dataset:
Corrosion resistance mechanism of the passive films formed on as-cast FeCoCrNiMn high-entropy alloy
Authors: Jinlong Lv , Jin Huijin 
Published: January 2020

Abstract
The present work investigates the corrosion resistance of as-cast FeCoCrNiMn high-entropy alloy in borate buffer solution. Compared with 304 and 316L stainless steels steel, as-cast FeCoCrNiMn high-entropy alloy exhibited excellent passivation ability. This should be attributed to homogenization of alloying elements. Highly corrosion-resistant elements in as-cast FeCoCrNiMn alloys, for example, Cr, Co and Ni, could promote the formation of protective passive film in borate buffer solution. Moreover, combined effect of high mixing entropy and sluggish diffusion also could improve the corrosion resistance. The formation mechanism of the passive films on the surface of as-cast FeCoCrNiMn alloys satisfied the point defect model.
Improving the electrocatalytic activity for formic acid oxidation of bimetallic Ir–Zn nanoparticles decorated on graphene nanoplatelets
Authors: Ahmad Khairul Naim , Noor Azam Adam Mohd Izhan , Isahak Wan Nor Roslam Wan , Mohd Zainoodin Azran , Masdar Mohd Shahbudin 
Published: January 2020

Abstract
A graphene nanoplatelet (GNP)-supported Ir–Zn catalyst (Ir–Zn/GNP) was fabricated by H2 reduction to discover an alternative for non-platinum and non-palladium catalysts as an anode catalyst in direct formic acid fuel cell (DFAFC). The obtained Ir–Zn/GNP catalyst with ratio of Ir:Zn = 50:50 (Ir50Zn50/GNP) exhibited better electrocatalytic activity than GNP-supported iridium catalyst (Ir/GNP) for formic acid oxidation. Although the oxidation peak current density of Ir50Zn50/GNP was slightly lower than that of Ir/GNP, the oxidation peak potential shifted more negatively (193 mV) than Ir/GNP with higher value of the ratio of forward scan to reverse the scan peak current (If/Ib). The presence of Zn also enhanced the power density and current generation with increased performance stability in a passive DFAFC cell tests. The improvement of the electrochemical performance was ascribed to the ensemble effect where the addition of Zn could modify the Ir atom arrangement, thereby promoting the oxidation through dehydrogenation pathway. However, extremely high Zn content would inhibit oxidation capability because Zn atoms might reduce the Ir catalytic sites. A new alternative for non-Pt and non-Pd anode catalysts for DFAFC applications was successfully achieved.
Thermal properties of coatings based on full aluminosiloxane polymer
Authors: Peredriy Oksana , Pakholiuk Olena , Martirosyan Irina , Khvyshchun Nadiia 
Published: January 2020

Abstract
This article is devoted to the study of thermal properties, heat resistance, corrosion resistance and fire resistance of new protective coatings based on the filled aluminosiloxane polymer. The aim of the study is to determine the effect of the source composition on the physical properties of the finished coating. Thermal stability was determined by periodic heating in a thermal chamber to a temperature of 800 °C for 5 h and then cooled in water. Corrosion resistance was determined by the change in roughness. Profiles and profilometers were used to determine the roughness parameters. Fire resistance was determined by the time from the start of the test to the onset of one of the normalized boundary states. It is set, that to improve the heat resistance of steel structures it is expedient to use appropriate coatings based on full aluminosiloxane polymer which contain Al2O3, ZrO2, kaolin, kaolin fiber and modifier TiO2 as fillers. The heat resistance of protective coatings for steel decreases by 20%–30% when kaolin is added at a heating temperature higher than 753 K. The heat resistance is increased by 30%–40% when kaolin fiber is added. Depth of corrosion of materials with developed protective coatings decreases by 2.2–3.5 times. The results of the study confirm that the introduction of kaolin in the coatings increases the fire resistance of the studied materials. Thus, the performance properties of the protective coatings can be adjusted over a wide temperature range by changing the oxide and silicate fillers.
Characterization of micro-arc oxidation coatings on Ti6Al4V with addition of SiC particle
Authors: Lian Yong , Dai Xianyi , Zhang Jin 
Published: January 2020

Abstract
In the present work, particles of SiC were applied to the micro-arc oxidation (MAO) treatment of Ti6Al4V, characterization of MAO coatings with different SiC particle concentration were evaluated. X-Ray Diffraction (XRD) and Scanning Electron Microscope (SEM) results show that the structure and morphology of MAO ceramic coatings could change with different amounts of SiC in the electrolyte. Both of the number and size of the pores on the ceramic coating surface were decreased, while the layer thickness increased with the increase in SiC particles in the electrolyte. A dense double-layer structure coating composed of a Ti-based layer and a SiC-based layer with a thickness of about 40 μm was prepared. It was shown that the addition of SiC particles participated in the process of micro-arc oxidation and changed the microstructure of MAO coating.
RETRACTED: Spinel zinc ferrite nanoparticles: an active nanocatalyst for microwave irradiated solvent free synthesis of chalcones
Authors: Borade Ravikumar M , Somvanshi Sandeep B , Kale Swati B , Pawar Rajendra P , Jadhav K M 
Published: January 2020

Abstract
A profoundly effective magnetically recoverable nano zinc ferrite nanocatalyst was fabricated by means of sol-gel auto ignition strategy. The synthesized nanocatalyst has been completely portrayed by standard techniques for structural, morphological, compositional, surface, magnetic, dielectric, optical and photoluminescence properties individually. The x-ray diffraction pattern affirmed the arrangement of cubic spinel structure with an average crystallite size of 21 nm. FE-SEM images uncovered the circular morphology with nanometric average grain measure (37 nm). The surface area, pore volume and pore radius was observed to be 39.812 m2 g−1, 3.41 cc g−1 and 1.34 nm individually from BET analysis. VSM investigation demonstrated the superparamgnetic nature of the prepared sample with moderate magnetization value and negligible coercivity. The optical band gap deduced from UV–vis spectra was observed to be 2.098 eV. Every one of these properties of zinc nanoferrite makes them brilliant contender for microwave radiation absorption. Further, a proficient and versatile microwave irradiated solvent free synthesis of chalcone derivatives has been developed using prepared zinc nanoferrite catalyst. The remarkable highlights of this new protocol are solvent free reaction, economical cheapness, eco-friendliness, high yields, reduced reaction times and easy recovery and reuse of zinc ferrite nanocatalyst.
Mechanical properties and wear behavior of fly ash particle reinforced Al matrix composites
Authors: Desai Akash Mayurbhai , Paul Tanay Rudra , Mallik Manab 
Published: January 2020

Abstract
In this study, aluminum-based metal matrix composites containing 5, 10, 15, 20, and 25% fly ash particles by weight have been fabricated using a stir casting route. Microstructural observations under an optical microscope suggest that fly ash particles in the cast composites are uniformly distributed throughout the matrix. The mechanical properties such as tensile strength and hardness of the aluminum alloy have enhanced significantly with the addition of fly ash. Wear behavior of base metal and its composite have been studied in dry sliding conditions using a pin-on-disc tribometer. Wear tests have been conducted at three different loads of 9.81, 19.62, and 29.43 N at a constant sliding velocity of 1.3 m s−1. Microstructural observations of worn surfaces and wear debris suggest that wear mechanism in base metal is controlled by adhesion, whereas that for composites is abrasive. The least wear rate has been obtained in Al-10% Fly ash composite. The Al-10% Fly ash is observed to possess an optimum level of mechanical properties and wear behavior.
Effect on corrosion behaviour of the surface of aluminium 4.5 Cu with bamboo leaf ash composites by laser treatment
Authors: Rao Gadudasu Babu , Bannaravuri Praveen Kumar , Birru Anil Kumar 
Published: January 2020

AbstractAluminium composites have various applications in engineering thanks to their greater strength with lightweight, formability and ductility. However, the properties of the Aluminium composites such as wear, corrosion, hardness, and fatigue resistance are critical at near-surface regions. In this present research work, the effect on the surface of Aluminium 4.5Cu with Bamboo Leaf Ash composite by laser surface melting was done, wherein the fabrication was done by stir-casting with bamboo leaf ash reinforced particles with 2 and 4 weight percentage. By using the laser machine, the composite’s surface was melted. Microstructure and corrosion behaviour of composites before surface melting and after laser surface melting was inspected and the outcomes were compared. It was perceived that, the diminishment of porosity in the grain refinement. The corrosion resistance of composites had improved remarkably by Laser Surface Melting. The Corrosion mechanism was analysed by observing the morphology of the corroded surface of composites. Henceforth the Laser Surface Melting will be applied appropriately to boost the surface properties of aluminium composites.
Synthesis and characterisation of magnesium matrix composite reinforced with titanium dioxide nanoparticulates
Authors: Elumalai P C , Ganesh R 
Published: January 2020

Abstract
In the present work, magnesium matrix composite reinforced with titanium dioxide (TiO2) nanoparticulates was synthesized using powder metallurgy (solid-state processing) technique followed by hybrid microwave heat treatment and hot extrusion. Commercially available magnesium particulates of average particle size 60–300 μm and titanium oxide nanoparticulates of average particle size ∼21 nm was used in this study. Extruded samples of pure magnesium and magnesium titanium dioxide (Mg-TiO2) nanocomposites were characterized for their physical, surface and internal microstructure (2D & 3D), elemental composition and mechanical behaviour. The experimental density and porosity of the composite specimens increases gradually with increase in addition of TiO2. Scanning electron micrographs (SEM) composite samples revealed that the nano TiO2 particulates distributed uniformly throughout the matrix with no significant agglomeration. The same was confirmed through 3D internal microstructure also. The elemental composition, crystalline structure was measured using x-ray diffractograms (XRD) which confirm that no foreign elements exists. Further, the microhardness and nanoindentation of composite samples showed an increasing trend with increase in addition of TiO2 nanoparticles.
Solution-processed flexible metal-oxide thin-film transistors operating beyond 20 MHz
Authors: Wei Xiaozhu , Kumagai Shohei , Tsuzuku Kotaro , Yamamura Akifumi , Makita Tatsuyuki , Sasaki Mari , Watanabe Shun , Takeya Jun 
Published: January 2020

Abstract
Complementary metal-oxide-semiconductor, an elementary building block, allows for a high degree of implementation of logic circuits with relatively low power consumption and low manufacturing cost, which plays a vital role not only in current Si electronics, but also in printed flexible devices. To meet the looming challenges of the Internet of Things, p-channel thin-film transistors (TFTs) with an excellent mobility and processability have been increasingly developed using organic semiconductors. However, owing to the inherent electron-donating nature of organic compounds, the high performance of n-channel organic TFTs has yet to be demonstrated. Here, in this paper, we developed state-of-the-art solution-processed indium-zinc-oxide (IZO) TFTs with high electron mobility, sharp turn-on characteristics at 0 V, and excellent atmospheric stability and compatibility with wet patterning processes. With the damage-free lithography process in conjunction with the ultimate optimization of entire device processes, IZO-based TFT arrays were successfully fabricated via a solution process on flexible polyimide substrates. A cutoff frequency of 23 MHz in air was achieved, which is almost twice as fast as the frequency used in a near-field communication band. Furthermore, the as-fabricated IZO-based TFTs even function well under bending stress. Therefore, the current concept and technique is expected to open up opportunities to develop practical flexible devices with high-speed operation.
Lung Cancer Stigma: Does Smoking History Matter?
Authors: Williamson Timothy J , Kwon Diana M , Riley Kristen E , Shen Megan J , Hamann Heidi A , Ostroff Jamie S 
Published: January 2020

AbstractBackgroundLung cancer patients commonly report stigma, often attributing it to the well-established association of smoking as the leading preventable cause. Theory and research suggest that patients’ smoking history may differentiate patients’ experience of lung cancer stigma. However, there is inconsistent evidence whether lung cancer stigma varies by patients’ smoking history, owing to limitations in the literature.PurposeThis study examined differences in lung cancer patients’ reported experience of lung cancer stigma by smoking history.MethodParticipants (N = 266, 63.9% female) were men and women with lung cancer who completed a validated, multidimensional questionnaire measuring lung cancer stigma. Multivariable regression models characterized relationships between smoking history (currently, formerly, and never smoked) and lung cancer stigma, controlling for psychological and sociodemographic covariates.ResultsParticipants who currently smoked reported significantly higher total, internalized, and perceived lung cancer stigma compared to those who formerly or never smoked (all p &lt; .05). Participants who formerly smoked reported significantly higher total and internalized stigma compared to those who never smoked (p &lt; .001). Participants reported similar levels of constrained disclosure, regardless of smoking history (p = .630).ConclusionsTotal, internalized, and perceived stigma vary meaningfully by lung cancer patients’ smoking history. Patients who smoke at diagnosis are at risk for experiencing high levels of stigma and could benefit from psychosocial support. Regardless of smoking history, patients reported similar levels of discomfort in sharing information about their lung cancer diagnosis with others. Future studies should test relationships between health-related stigma and associated health behaviors in other stigmatized groups.
Differential network analysis of multiple human tissue interactomes highlights tissue-selective processes and genetic disorder genes
Authors: Basha Omer , Argov Chanan M , Artzy Raviv , Zoabi Yazeed , Hekselman Idan , Alfandari Liad , Chalifa-Caspi Vered , Yeger-Lotem Esti 
Published: January 2020

Abstract

Motivation
Differential network analysis, designed to highlight network changes between conditions, is an important paradigm in network biology. However, differential network analysis methods have been typically designed to compare between two conditions and were rarely applied to multiple protein interaction networks (interactomes). Importantly, large-scale benchmarks for their evaluation have been lacking.

Results
Here, we present a framework for assessing the ability of differential network analysis of multiple human tissue interactomes to highlight tissue-selective processes and disorders. For this, we created a benchmark of 6499 curated tissue-specific Gene Ontology biological processes. We applied five methods, including four differential network analysis methods, to construct weighted interactomes for 34 tissues. Rigorous assessment of this benchmark revealed that differential analysis methods perform well in revealing tissue-selective processes (AUCs of 0.82–0.9). Next, we applied differential network analysis to illuminate the genes underlying tissue-selective hereditary disorders. For this, we curated a dataset of 1305 tissue-specific hereditary disorders and their manifesting tissues. Focusing on subnetworks containing the top 1% differential interactions in disease-relevant tissue interactomes revealed significant enrichment for disorder-causing genes in 18.6% of the cases, with a significantly high success rate for blood, nerve, muscle and heart diseases.

Summary
Altogether, we offer a framework that includes expansive manually curated datasets of tissue-selective processes and disorders to be used as benchmarks or to illuminate tissue-selective processes and genes. Our results demonstrate that differential analysis of multiple human tissue interactomes is a powerful tool for highlighting processes and genes with tissue-selective functionality and clinical impact.

Availability and implementation
Datasets are available as part of the Supplementary data.

Supplementary information
Supplementary data are available at Bioinformatics online.
METADOCK 2: a high-throughput parallel metaheuristic scheme for molecular docking
Authors: Imbernón Baldomero , Serrano Antonio , Bueno-Crespo Andrés , Abellán José L , Pérez-Sánchez Horacio , Cecilia José M 
Published: January 2020

Abstract

Motivation
Molecular docking methods are extensively used to predict the interaction between protein–ligand systems in terms of structure and binding affinity, through the optimization of a physics-based scoring function. However, the computational requirements of these simulations grow exponentially with: (i) the global optimization procedure, (ii) the number and degrees of freedom of molecular conformations generated and (iii) the mathematical complexity of the scoring function.

Results
In this work, we introduce a novel molecular docking method named METADOCK 2, which incorporates several novel features, such as (i) a ligand-dependent blind docking approach that exhaustively scans the whole protein surface to detect novel allosteric sites, (ii) an optimization method to enable the use of a wide branch of metaheuristics and (iii) a heterogeneous implementation based on multicore CPUs and multiple graphics processing units. Two representative scoring functions implemented in METADOCK 2 are extensively evaluated in terms of computational performance and accuracy using several benchmarks (such as the well-known DUD) against AutoDock 4.2 and AutoDock Vina. Results place METADOCK 2 as an efficient and accurate docking methodology able to deal with complex systems where computational demands are staggering and which outperforms both AutoDock Vina and AutoDock 4.

Availability and implementation
https://Baldoimbernon@bitbucket.org/Baldoimbernon/metadock_2.git.

Supplementary information
Supplementary data are available at Bioinformatics online.
Improved 125I radioimmunoassay for cotinine by selective removal of bridge antibodies.
Authors: Knight G J , Wylie P , Holman M S , Haddow J E 
Published: January 2020

Abstract
We describe an 125I-based RIA for cotinine, the major metabolite of nicotine. The slope of the dose-response curve was quite shallow (6-8% change in binding per doubling dose), resulting in between-assay CVs of 15 to 20%. This effect occurred because the radioligand formed by linking a cotinine derivative to tyramine manifested greater affinity for the anti-cotinine antibodies than did cotinine itself. We absorbed the serum with a derivative of nicotine coupled to the carrier protein via a chemical bridge similar to that used to form the cotinine/carrier protein immunogen. An RIA in which we used such absorbed serum showed a significantly increased slope of the dose-response curve (11-13% change in binding per doubling dose), and between-assay CVS were only 6 to 8%. We suggest that this improvement results because absorption removes anti-bridge antibodies directed against the chemical-bond common to the cotinine/carrier-protein immunogen and to the cotinine/tyramine radioligand.
Improved determination of estriol-16 alpha-glucuronide in pregnancy urine by direct liquid chromatography with fluorescence detection.
Authors: Andreolini F , Borra C , Di Corcia A , Samperi R , Raponi G 
Published: January 2020

Abstract
In this relatively simple, rapid assay of estriol-16 alpha-glucuronide in pregnancy urine, the urine sample is diluted 20-fold with phosphate buffer (pH 5.2) containing 360 mL of acetonitrile and 2 g of cetyltrimethylammonium bromide per liter, then directly injected into the chromatograph. A sample can be assayed within 14 min. Day-to-day CVs ranged from 2.3% at 45 mg/L to 2.9% at 4.8 mg/L. The limit of sensitivity is 0.4 mg/L. Results by the present method (y) correlated and compared very well with those by a method involving fractionation of estrogen conjugates and gas chromatography (x) for 24 samples of pregnancy urine (y = 1.09x + 0.303; r = 0.947). This assay is inexpensive and suitable for complete automation.
Assay of total and free propranolol in plasma by liquid chromatography with fluorometric detection.
Authors: Ray K , Trawick W G , Mullins R E 
Published: January 2020

Abstract
We report a liquid-chromatographic method for assay of total and free propranolol and its metabolite, propranolol glycol, in plasma. An ultrafiltration device is used to separate the free drugs from the protein-bound drugs. The total and free drugs are isolated from plasma or ultrafiltrate by liquid-solid extraction on a Waters C18 SEP-PAK and the drugs are quantified on a C18 mu-Bondpak radial-compression column. The mobile phase consists of equal parts of methanol and a solution of potassium 50 mmol/L phosphate and 2.5 mmol/L 1-pentane-sulfonic acid, pH 5.0. Detection was by fluorescence, with excitation at 296 nm and emission at 338 nm. Time required for sample preparation for total-propranolol assay is 40 min per eight samples. Sample preparation for free-propranolol assay requires an additional 1 h per eight samples. Chromatography requires 15 min per sample. The extraction recovery is approximately 75% and the assay curve is linear from 5 to 400 micrograms/L. The run-to-run CV is 4% for total propranolol, 15% for free propranolol.
Determination of serum aspartate aminotransferase with pyridoxal 5'-phosphate in the Technicon SMAC and Du Pont aca compared and correlated with the IFCC recommended method.
Authors: Neeley W E , O'Classen K , Gruber M 
Published: January 2020

Abstract
Inexpensive improvements in continuous-flow analytical apparatus can eliminate some perplexing inconsistencies and limitations in the use of the Technicon SMAC instrument for measuring the activity in serum of aspartate aminotransferase (EC 2.6.1.1) in the presence of pyridoxal 5'-phosphate. In addition, a calibration procedure based on values for this enzyme obtained by a modified IFCC method can be used to calibrate both the Technicon SMAC and the Du Pont aca instruments to produce excellent correlation between the two.
Ultrafiltration studies in vitro of serum aluminum in dialysis patients after deferoxamine chelation therapy.
Authors: Leung F Y , Hodsman A B , Muirhead N , Henderson A R 
Published: January 2020

Abstract
Using gel filtration chromatography, we evaluated aluminum bound to albumin, transferrin, and other plasma proteins in the serum of patients on maintenance hemodialysis. The proportion of dialyzable aluminum, as determined by selective membrane ultrafiltration and flameless atomic absorption spectrometry, increased by more than fourfold on treatment with the metal chelator, deferoxamine. This ultrafiltration technique may prove useful for monitoring the proportion of aluminum mobilized during such therapy.