bluuebunny/crossref_metadata_2025_split huggingface dataset:
The value of introspective measures in aptitude-treatment interaction research
Authors: Sachs Rebecca , Akiyama Yuka , Nakatsukasa Kimi 
Published: October 2019

Abstract
To explore the value of introspective measures in aptitude-treatment interaction (ATI) research, this study
analyzed the cognitive profiles and concurrent think-alouds of six university learners of Japanese who were highly successful,
moderately successful, or unsuccessful under two computer-mediated feedback conditions in a larger (N = 80)
quantitative ATI investigation (Sachs, 2011). That study had made indirect inferences
regarding relationships among individual differences (IDs), cognitive processes, and learning on the basis of correlational
results. Using Leow’s (2015) depth-of-processing (DoP) framework as a lens, what we
found in the qualitative verbalization data highlighted that learners in the same condition with similar strengths in the IDs that
are statistically associated with performance at the group level may nonetheless engage in different cognitive processes and
achieve different learning outcomes, and vice versa. The findings also pointed toward more complex ID-DoP and ID-ID interactions
that future research could explore, such as the possibility that a weakness in memory might limit the benefits of metalinguistic
knowledge and analytic processing in a condition where group-level correlations suggest analysis is relevant to success, or that
analytic processing might enhance the value of memory in a condition where memory is relevant to success. In our conclusions, we
argue for the value of mixed-methods research in this area.
III–V ternary nanowires on Si substrates: growth, characterization and device applications
Authors: Boras Giorgos , Yu Xuezhe , Liu Huiyun 
Published: October 2019

Abstract
Over the past decades, the progress in the growth of materials which can be applied to cutting-edge technologies in the field of electronics, optoelectronics and energy harvesting has been remarkable. Among the various materials, group III–V semiconductors are of particular interest and have been widely investigated due to their excellent optical properties and high carrier mobility. However, the integration of III–V structures as light sources and numerous other optical components on Si, which is the foundation for most optoelectronic and electronic integrated circuits, has been hindered by the large lattice mismatch between these compounds. This mismatch results in substantial amounts of strain and degradation of the performance of the devices. Nanowires (NWs) are unique nanostructures that induce elastic strain relaxation, allowing for the monolithic integration of III–V semiconductors on the cheap and mature Si platform. A technique that ensures flexibility and freedom in the design of NW structures is the growth of ternary III–V NWs, which offer a tuneable frame of optical characteristics, merely by adjusting their nominal composition. In this review, we will focus on the recent progress in the growth of ternary III–V NWs on Si substrates. After analysing the growth mechanisms that are being employed and describing the effect of strain in the NW growth, we will thoroughly inspect the available literature and present the growth methods, characterization and optical measurements of each of the III–V ternary alloys that have been demonstrated. The different properties and special treatments required for each of these material platforms are also discussed. Moreover, we will present the results from the works on device fabrication, including lasers, solar cells, water splitting devices, photodetectors and FETs, where ternary III–V NWs were used as building blocks. Through the current paper, we exhibit the up-to-date state in this field of research and summarize the important accomplishments of the past few years.
Simulation of structural design with high coupling efficiency in external cavity semiconductor laser
Authors: Zhang Yangjie , Guo Wentao , Xiong Di , Guo Xiaofeng , Liao Wenyuan , Liu Haifeng , Liu Weihua , Tan Manqing 
Published: October 2019

Abstract
For external cavity semiconductor lasers (ECSLs), high coupling efficiency is critical to reducing the linewidth. In this paper, the coupling efficiency between the laser diode and the waveguide grating has been improved, with proposals for its improvement presented, including adding spot-size conversion (SSC) and using a silicon-on-insulator (SOI) waveguide. The results indicate an increase of coupling efficiency from 41.5% to 93.1%, which exhibits an improvement of approximately 51.6% over conventional schemes. The relationship between coupling efficiency and SOI waveguide structures is mainly concerned in this article. These findings provide a new way for the future research of the narrow linewidth of ECSL.
Macrophage-Inspired Nanorobots to Fast Recognition of Bacteria and Virus Through Electric Forces and Fields Patterns Inside of an Internet of Bio-Nano Things Network
Authors: Nieto-Chaupis Huber 
Published: October 2019

Abstract
We present computational simulations of the expected performance by a nanodevice that would play the role as an immune system cell such as the well-known macrophage, in the sense that these advanced devices can detect and perform interventions against aggregations of bacteria or virus. These prospective nanorobots would have the capability to recognize physical properties as well as to anticipate motion of bacteria and virus based entirely in electric interactions. The recognition of the type of bacteria is achieved through the continuous sensing of the electric interactions between the nanorobot and bacteria. A physics-based model entirely developed from the calculations of electric forces supports the content of this paper.
From the fact that nanorobots can exert electric forces on bacteria membrane based on the electric interactions basically. These engineered advanced devices are modeled through electrodynamics interactions that in a first instance might well described by the Jackson and Laplace equations in conjunction to the solution of the diffusion’s equation. By knowing forces and fields is possible to gain information about composition, motility and decisions made by bacteria and virus.
Once the intensity of the electric force has been estimated the nanorobot can perform concrete tasks. In this manner a frequency is associated for a range of intensity of field. Such frequency is related to a certain color. Thus, in according to color, morphology and motility of the bacteria aggregations the nanorobot executes a decision to break-off the ionic internal composition to decrease their kinematics.
Therefore, the distance between nanorobot and bacteria plays a crucial role in the simulations as to the fidelity of the recognition of the chemical compounds. The nanorobot learns about the type of bacteria through the frequency of oscillation.
While a macrophage swallow and absorbs biological and biochemical debris and compounds, the present proposal translates this concept to one inside of the territory of Classical Electrodynamics by which advanced nanodevices acquire firm capabilities to reduce bacteria capacities to break their homeostasis in short times.
The simulations have employed the method of bandwidth that allows to vary the field intensity through the resulting mathematical expressions. E-coli was used to test the model of this paper.
Development of a Novel Tyrosinase Amperometric Biosensor Based on Tin Nanoparticles for the Detection of Bisphenol A (4.4-Isopropylidenediphenol) in Water
Authors: Mayedwa N , Ajayi R F , Mongwaketsi N , Matinise N , Mulaudzi-Masuku T , Hendricks K , Maaza M 
Published: October 2019

Abstract
Highly crystalline poly-vinyl pyrrolidone (PVP) capped Sn nanocrystals with good size and shape uniformity was synthesized by a hydrothermal process. A highly sensitive amperometric biosensor for the detection of Bisphenol A (BPA) was developed by immobilizing Tyrosinase on to glassy carbon electrode (GCE) modified with Sn nanoparticles. The fabricated amperometric biosensor exhibited excellent electroactivity towards BPA oxidation catalysed by enzymatic reaction of tyrosinase together with good conductivity of Sn nanoparticles. The developed biosensor displayed linear range from 0.01 to 0.10 μmol L-1 and a detection limit (DL) of 1.8 nmol L-1 with a correlation coefficient of 0.989. Electrochemical impedance spectroscopy (EIS) obtained in buffer solution for Tyrosinase/SnNP/GCE had the lowest charge transfer resistance (Rct) value of 219 Ω, which indicated low charge transfer. There was an increase in Rct for Tyrosinase/GCE, SnNP/GCE and Bare GCE which was 316 Ω, 638 Ω and 598 Ω respectively. This indicated a strong resistance to charge transfer. It is reported for the first time the use of Sn nanoparticles modified on GCE and tyrosinase for detection of BPA.
The performance evaluation of nanostructured perovskite-type complex oxides GdBO3 (B = Fe, Co, Mn) for carbon monoxide hydrogenation
Authors: Sheshko T F , Kryuchkova T A , Sharaeva A A , Serov Y M , Yafarova L V , Zvereva I A 
Published: October 2019

Abstract
Nanostructured perovskite-type oxides GdBO3 (B = Fe, Co, Mn) synthesized by sol-gel technology, have been used as catalysts for the light olefins production by carbon monoxide hydrogenation. Perovskite materials were characterized using different techniques: XRD, SEM+EDX, BET, TG to study structure and morphology. Oxidation state of Fe and Mn was determined by XPS. The catalytic activity test was carried out in a continuous-flow mode with chromatographic analysis of the reaction mixture. It was found that the catalytic characteristics are determined by the nature of the metal in the B-site of perovskite. The specific catalytic activity increases in the series GdMnO3 <GdFeO3 <GdCoO3, and selectivity for olefins - in the reverse order.
Assessing the structural, morphological and magnetic properties of polymer-coated magnesium-doped cobalt ferrite (CoFe2O4) nanoparticles for biomedical application
Authors: Mokhosi SR , Mdlalose W , Mngadi S , Singh M , Moyo T 
Published: October 2019

Abstract
In this study, we have functionalised cobalt ferrite (CoFe2O4) nanoparticles (NPs) by doping with a natural bio-mineral magnesium (Mg) and coating with three polymers to enhance biocompatibility and feasibility for therapeutic applications. The glycol-thermal method was employed to synthesise CoFe2O4 and Mg0.5Co0.5Fe2O4 NPs. The latter NPs were functionalised with chitosan (CHI), poly-ethylene glycol (PEG) and poly-vinyl alcohol (PVA) to produce CHI-Mg0.5Co0.5Fe2O4, PEG-Mg0.5Co0.5Fe2O4 and PVA-Mg0.5Co0.5Fe2O4. The structure and morphology of NPs were characterized using transmission electron microscopy (TEM), high resolution TEM (HR-TEM), X-ray diffraction (XRD), Fourier transform infra-red (FTIR) spectroscopy and nanoparticle tracking analysis (NTA). Magnetic measurements were carried out using a vibrating sample magnetometer (VSM). XRD patterns confirmed inverse cubic spinel phase structure typical of ferrite NPs. NPs exhibited spherical shape with average size diameters of ranging between 8 nm and 11 nm. Coating increased these average size diameters up to 13 nm. Zeta potential measurements indicated low colloidal stability of the NPs which improved considerably with PEG and PVA coating. FTIR confirmed surface modifications seen in additional peaks characterised by amine and carbonyl groups for chitosan and PEG/PVA, respectively. CoFe2O4 NPs exhibited high saturation magnetisations of 73.861 emu/g. This value decreased with magnesium-doping and polymer-coating due to shielding effect. In vitro cytotoxicity analysis demonstrated significant tolerability of coated Mg0.5Co0.5Fe2O4 NPs at concentrations of 800 μg/ml in cervical cancer (HeLa) cell lines. Conclusively, these polymer-coated ferrites present feasible nanocarriers in magneto-targeted drug delivery.
Preparation and Characterization of ZnO & TiO2 Nanocatalysts For Photo Degradation of Bentazon existing in Polluted water
Authors: Ahmed Shorouq 
Published: October 2019

Abstract
One of the most important scientific research activities in both of energy and environmental sectors is synthesizing of composites such as nanocatalyst powders of zinc oxide and titanium oxide. The reason why is the best to use this combination of composites, as they are available in the market, with low cost, they have powerful optical,electric properties, high stability, and nontoxicity,these composites are classified as one of the best promising photocatalysts. They show high level of light absorption range and wide range of charge transfer from ZnO to TiO2 their composite has a superior photocatalytic activity. The goal of this investigation is to prove the applicability of ZnO–TiO2 composite as a photocatalyst for degradation of Bentazon in polluted water. Many various parameters will be studied, to see their effects on the process of the degradation of the Bentazon, examples of that are the initial catalyst dosage, pH level, initial Bentazon concentration, purging of oxygen gas, adding of hydrogen peroxide of a multiple concentration and total organic compounds on the removal efficiency of Bentazon.The best guaranteed removal of Bentazon is at neutral pH,and the reason for that could be due to the photo-corrosion of ZnO composite for both acidic and basic conditions. While it is noticeable that degradation of the Bentazon decreased in the presence of organic compounds. Removing the Bentazon by UV/ZnO/TiO2 process shows greater Efficiency than that by UV/TiO2 process, UV/ZnO, and UV alone.
Effects of types of polyols on thermal degradation behaviors of poly(benzoxazine-urethane) alloys
Authors: Klinchan Aumnart , Luengrojanakul Panuwat , Rimdusit Sarawut 
Published: October 2019

Abstract
In this work, thermal stability of alloys of polybenzoxazine (PBA-a) / polyurethane (PU) which show unique shape memory properties has been investigated. This study aims to confirm the thermal stability under cyclic heat activation in shape memory performance. Thermal degradation kinetics of the system is evaluated as this behaviour has not been studied before. The degradation temperatures of the obtained alloys were determined by Thermogravimetric Analyzer (TGA) with various heating rates of 15, 20 and 25°C/min. Polybenzoxazine and polyurethane alloys at weight ratios of 80:20, 70:30 and 60:40 were examined.
The preparation and characterization of cellulose derivative membrane as matrix for sustained release formulation
Authors: Hadi Saptono , Hastuti Budi , Suryaningtyas Riskita 
Published: October 2019

Abstract
A synthesis of cellulose derivative membrane has been performed as good candidate for sustained release matrix. Alginate is a polysaccharide that water-soluble, consisting of β-D-manuronate and α-L-guluronate, and contains of carboxylic (–COOH) and hydroxyl (–OH) groups which allow to form hydrogen bonds with drug compounds. The purpose of this study is to determine the physicochemical properties of alginate membranes. The membranes were prepared by the solution casting method on polypropylene container. Structural characterization of the membrane was done by fourier transform infrared spectra (FTIR) and the mechanical properties of the membrane was analyzed with tensile strength test and elongation test based on variation of alginate concentration. Scanning Electron Microscopy (SEM) was done to determine the surface morphology of the membrane. The FTIR spectra showed the presence of carbonyl group (C=O) at 1597 cm−1 and hydroxyl group (–OH) at 3426 cm−1. The tensile strength of membrane for alginate with different concentration at 3.3, 5, and 10% w/v were 8.84, 17.07, and 7.36 MPa, respectively. This indicates that the higher concentration of alginate membrane will increase the strength of the membrane, but at higher alginate concentration the membrane strength tend to decrease.
Influence of flame retardants on the mechanical properties of glass fiber reinforced compounds in polymeric matrix epoxy and polyester
Authors: Pérez-Salinas C F , Castro C B , Valencia E R , Freire O F 
Published: October 2019

Abstract
In the present study, polymeric epoxy and polyester resin reinforced with glass fiber compounds were prepared by adding of flame retardants based on aluminum and magnesium hydroxide in order to evaluate their influence on mechanical properties. An experimental DOE design was developed with two qualitative factors: the resin and retardant type; with two levels each and a quantitative factor: volumetric composition of the retardant with three levels (3%, 6% and 9%). With all possible combinations; tensile, flexural and impact tests were carried out. The results showed that the addition of retardants in different percentages has different influence for each mechanical property. It was evidenced that the 9% HA Aluminum Hydroxide has no significant effect on the tensile strength and its modulus compared to Magnesium Hydroxide HM. Conversely; on the flexural strength, flexural modulus and rupture energy the HM has a slightly lower effect with respect to the HA. For flexural strength and its modulus, the best proportion of retardant was 6%. 3% is the recommendation for rupture energy. The data presented in this document can be used to improve the fire resistance of the existing materials studied.
Biocompatibility and surface properties of hydrogenated amorphous silicon-germanium thin films prepared by LF-PECVD
Authors: Huerta F López , García R M Woo , González L García , May A L Herrera , Arriaga W Calleja , Vega R , Soto E 
Published: October 2019

Abstract
We studied the surface morphology and biocompatibility of hydrogenated amorphous silicon-germanium (a-Si1-xGex:H) thin films prepared by Low Frequency Plasma Enhanced Chemical Vapor Deposition (LF-PECVD). These films were deposited on a Corning 2947 glass substrate having a thickness of 3 μm, the electrical performance showed a decreased electrical resistance for low regime voltage. The root mean square (RMS) surface roughness of the films was measured by atomic force microscopy (AFM) in a non-contact mode. A biocompatibility tests was carried out using primary cultures of dorsal root ganglion (DRG) of Wistar rats. The DRG neurons were incubated for 18 hours on a-Si1-xGex:H thin films, and subsequent electrophysiological recording was performed. These neurons displayed typical ionic currents, including a fast-inward current at the beginning of voltage clamp pulse (Na+ current) and ensuing outward currents (K+ current). In current clamp experiments, depolarizing current pulse injection caused typical action potential discharge of the neurons. These results confirmed the feasibility of using a-Si1-xGex:H thin films as a biocompatible material.
Characterisation and wear behaviour of rolled carbon steel in Dot 4 brake fluid
Authors: Ajibola Olawale O , Akinribide Ojo J , Akinwamide Samuel O , Olubambi Peter A 
Published: October 2019

Abstract
The wear behaviour of as-rolled carbon steel (ARCS) in DOT4 brake fluid is investigated and reported in this study. Sample was characterised using chemical analysis, hardness, impact and tensile strength tests. Arc-spectrometry and the Energy Dispersive X-Ray (EDS) facilities were used to ascertain the chemical compositions. The microstructures and wear track patterns of samples were evaluated using Scanning Electron Microscopy (SEM) and High-resolution metallurgical microscope. The wear of as-rolled carbon steel (ARCS) samples subjected to reciprocating motion of loads at room temperature and constant wear time were compared in air, DOT4 fluid and water. The frictional behaviour and wear track patterns of the specimens subjected to varied normal loads (3, 5 and 10N) under reciprocating sliding wear were employed to assess the wear damage of samples in the three different environments. The coefficient of friction (CoF) obtained tends to be in the order of μDOT4 brake fluid < μwater < μair comparatively for the three test environments.
Wear behaviour of cast aluminium silicon (Al-Si) alloy in Dot 4 brake fluid
Authors: Ajibola Olawale O , Aribo Sunday , Ige Oladeji O , Akinribide Ojo J , Akinwamide Samuel O , Olubambi Peter A 
Published: October 2019

Abstract
The frictional sliding behaviour of cast Al-Si alloy was investigated with and without DOT 4 hydraulic brake fluid lubrication/environments. Cast Al-Si specimen was produced from wrought alloy and the specimen surface was metallurgically prepared. The as-cast product was characterized with aid of micro-hardness tester, the chemical composition was analysed by X-ray fluorescence (XRF), while X-ray diffraction (XRD) was used to identify phases present, microstructures and surface examinations were done on a high resolution metallurgical Optical Microscope. The properties of the polished and worn sample surfaces were examined by Scanning electron microscope (SEM) equipped with Energy dispersive X-ray (EDS) facilities. A 6mm diameter alumina ball under varying normal loads (3-10 N) was rubbed against the surface of the cast Al-Si coupon specimen. The dry and wet sliding wear behaviour was assessed based on the CoF-sliding time behaviour. From the results, the average CoF values of 0.9064 for dry and 0.2038 for wet contacts were obtained. Comparatively, 1.03E-06 and 4.21E-07 minimum wear intensities; and 467290 and 132170 wear resistances were obtained for dry and wet contacts respectively. Behaviour of cast Al-Si in DOT4 were compared with its performance in DOT3 regarding the hydraulic brake system application.
Experimental investigation of the road performance of terminal blend rubber asphalt mixture with different dry-way additives
Authors: Huang Q B , Qian Z D , Zhang M , Xue Y C 
Published: October 2019

Abstract
Using wet-way composite modification method may result in the amount of ground tire rubber (GTR) in terminal blend rubber asphalt (TB) undetectable. So, it is of great interest to find out if dry-way modification method can substitute for wet-way composite modified asphalt to address the shortcomings of TB mixture. A laboratory experiment was developed for performance evaluation of TB asphalt mixtures with dry –way use polymer additives. The results showed that: (1) 5 hours was recommended as optimum processing time, since no obvious difference existed after TB asphalt modifying for 5 h and 7 h. (2) The incorporation of anti-rutting agent PLAST.S, GTR, polyester fiber (PF) and styrene-butadiene-styrene block copolymer (SBS) improved the rutting stability, resistance against low-temperature cracking, moisture stability and fatigue life of TB asphalt mixture, especially when PLAST.S and PF were used. (3) The use of GTR and PF brought obvious increase of mixing torques, resulting in more challenges to the workability of TB asphalt mixtures, whereas mixture with PLAST.S did not have a statistically significant difference with TB asphalt mixture. Therefore, according to the results obtained, PF can be used to replace TB/SBS composited modified asphalt since the two shared the most similar improvement of the properties of TB asphalt mixtures, while PLAST.S and GTR were also considered as good choices for modifying the TB asphalt mixture in dry-way.