bluuebunny/crossref_metadata_2025_split huggingface dataset:
Application of dissipative particle dynamics to interfacial systems: Parameterization and scaling
Authors: Ferrari Marco , Boccardo Gianluca , Marchisio Daniele L. , Buffo Antonio 
Published: March 2023

Dissipative Particle Dynamics (DPD) is a stochastic particle model that is able to simulate larger systems over longer time scales than atomistic modeling approaches by including the concept of coarse-graining. Whether standard DPD can cover the whole mesoscale by changing the level of coarse-graining is still an open issue. A scaling scheme originally developed by Füchslin et al. (2009) was here applied to interfacial systems as one of the most successful uses of the classical DPD method. In particular, equilibrium properties such as the interfacial tension were analyzed at different levels of coarse-graining for planar oil–water interfaces with and without surfactant. A scaling factor for the interfacial tension was found due to the combined effect of the scaling scheme and the coarse-graining parameterization. Although the level of molecular description was largely decreased, promising results showed that it is possible to conserve the interfacial tension trend at increasing surfactant concentrations, remarkably reducing modeling complexity. The same approach was also employed to simulate a droplet configuration. Both planar and droplet conformations were maintained, showing that typical domain formations of multi-component systems can be performed in DPD by means of the scaling procedure. Therefore, we explored the possibility of describing oil–water and oil–water–surfactant systems in standard DPD using a scaling scheme with the aim of highlighting its advantages and limitations.
Evaluation of a physically defined silicon quantum dot for design of matching circuit for RF reflectometry charge sensing
Authors: Kamioka J. , Matsuda R. , Mizokuchi R. , Yoneda J. , Kodera T. 
Published: March 2023

This paper reports on the extraction of the equivalent circuit model parameters of a physically defined silicon quantum dot at a cryogenic temperature and design of the impedance matching circuits to improve the performance of a charge sensor for radio-frequency (RF) reflectometry. The I-V characteristics and the S-parameters of the quantum dot device are measured around a Coulomb peak at 4.2 K. The measured results are modeled by an RC parallel circuit, and the model parameters for the quantum dot device were obtained. We consider three impedance matching circuits for RF reflectometry of a quantum dot: shunt capacitor-series inductor type, shunt inductor-series capacitor type, and shunt inductor-series inductor-type. We formulate and compare the sensitivity and bandwidth of RF reflectometry for the three types of circuits. The analysis should be useful for selecting the optimal matching circuit and the circuit parameters for given equivalent circuit parameters and working frequency. This procedure is demonstrated for a quantum dot with the characterized model circuit along with simulated performance. This design technique of matching circuit for RF reflectometry can be applied to any device that can be represented by an RC parallel circuit. These results will facilitate to realize fast semiconductor qubit readout in various quantum dot platforms.
Significantly reduced lattice thermal conductivity with anharmonic lattice vibrations and band edge effect in electronic thermal conductivity in Ag2S1-xSex (0 ≤ x ≤ 0.6)
Authors: Hirata Keisuke , Singh Saurabh , Takeuchi Tsunehiro 
Published: March 2023

The composition dependence of the unusual behaviors in electronic and lattice thermal conductivity, κele and κlat, in Ag2S1-xSex (x = 0–0.6 in steps of 0.1, 300 K) is investigated in detail by means of precise electron and heat transport properties measurement, synchrotron X-ray crystal structure and electron density distribution analyses, and sound velocity measurement. We reveal that the κele of Ag2S1-xSex is strongly affected by the fine electronic structure of the conduction band edge near the chemical potential and the thermoelectric motive force; therefore, these effects make the κele of Ag2S1-xSe far different from that calculated by the Wiedemann–Franz law, κele = L0σT, with the Lorentz number L0 = π2kB2/(3e2). It is also clearly demonstrated that the κlat of Ag2S1-xSex is greatly reduced by anharmonic lattice vibrations and that the magnitude of κlat is quantitatively reproduced by an equation representing the thermal conductivity under the strongest scattering limit. The κlat decreases with increasing x and saturates at 0.4 W m−1 K−1 at x ≥ 0.4. This is caused by the increasing anharmonic lattice vibrations with x, and its saturating behavior is determined by the strongest scattering limit. On the other hand, a negligibly small κele at x = 0 turns out to be non-trivial at x ≥ 0.4 owing to the increasing carrier density with x, most likely contributed by the increasing interstitial Ag defects. Consequently, the total thermal conductivity of Ag2S1−xSex becomes minimum not at x = 0.5 (composition of the maximum structure entropy) but at x = 0.3.
Siphoning novel sources of seedling salinity tolerance from the diverse chickpea landraces
Authors: Joshi Nilesh , Pappula Reddy Sneha Priya , Kumar Neeraj , Bharadwaj Chellapilla , Tapan Kumar , Patil B. S. , Jain Pradeep Kumar , M. S. Nimmy , Roorkiwal Manish , Verma Preeti , Varshney Rajeev K. , Siddique Kadambot H. M. , K. Sudhir 
Published: March 2023

Context Chickpea (Cicer arietinum L.) are highly sensitive to elevated salinity, particularly at initial seedling establishment stage. Seedling screening would be an effective means to identify novel sources of donors for salt tolerance. Aim This study aimed to identify salt stress tolerant genotypes at seedling stage from 50 chickpea accessions. Methods The screening of 50 chickpea accessions was done under two salinity conditions including salt stress (8 dS m−1) and control (no salt stress). Accessions were studied for morphological traits, root system architectural analysis, and CSTI (Cumulative salt tolerance index). Further, principal component analysis was conducted to validate these results for more accuracy and reliability. Key results For morphological traits, a high degree of genetic variation was seen among genotypes, and root traits were found to be the better indicators of salt stress tolerance. CSTI was used to classify the accessions; 22 (44%) were identified as salt sensitive, 21 (42%) were found to be moderately salt tolerant, and 7 (14%) had moderate to high salt tolerance. The most salt tolerant and salt sensitive genotypes were found to be ICCV10 and ILC5595, respectively. Conclusions Early seedling screening has a great potential to identify genotypes with robust root systems, which can withstand salinity. Implications We used a novel approach to classify chickpea landraces based on the combination of CSTI and principal component analysis methods. By choosing suitable donors and prospective genotypes at early growth stages, the knowledge gathered from this study may aid scientists and chickpea breeders in developing salt tolerant cultivars.
On the nature of pragmatic constituents
Authors: Graci Roberto 
Published: March 2023

AbstractThe present article focuses on certain points in the semantics/pragmatics debate. Among these, one of the most interesting is the possibility of reconciling, independent of the context, certain aspects of meaning which have always been the subject of discussion in formal semantics, with the view that meaning is socially and situationally conditioned. Recent new insights concerning the importance of pragmatics for enriching the propositional content of the utterance should not lead to a radical contextualism that denies the assignment of any role at all to semantics. Instead, it is possible to argue that both dimensions, semantics and pragmatics, along with their constituent parts, offer fundamental contributions to the transmission and understanding of the overall meaning of a (spoken or written) text.
Auditory brainstem response in autistic children
Authors: Cardon Garrett , Cate Madelyn , Cordingley Sarah , Bown Brittany 
Published: March 2023

Purpose
Autistic individuals frequently experience sensory processing difficulties. Such difficulties can significantly impact important functions and quality of life. We are only beginning to understand the neural mechanisms of atypical sensory processing. However, one established way to measure aspects of auditory function is the auditory brainstem response (ABR). While ABR has been primarily hypothesised thus far as a means of early detection/diagnosis in autism, it has the potential to aid in examining sensory processing in this population.

Method
Thus, we investigated standard ABR waveform characteristics in age-matched groups of autistic and typically developing children during various stimulus and intensity conditions. We also examined within ear waveform cross-correlations and inter-aural cross-correlations (IACC) to assess replicability and synchrony of participants’ ABRs, which was a novel approach to ABR analysis in this population.

Results
We observed longer peak latencies (esp. wave III and V) and interpeak latencies in the autism and typically developing groups in different conditions. There were no statistically significant results in cross-correlation or IACC.

Conclusions
These results suggest that brainstem auditory function may differ slightly, but is mostly similar, between autistic and typically developing children. We discuss these findings in terms of their implications for sensory processing and future utility.
Self-healing Au/PVDF-HFP composite ionic gel for flexible underwater pressure sensor
Authors: Yin Ruiyang , Li Linlin , Wang Lili , Lou Zheng 
Published: March 2023

Abstract
Ionic gels can be potentially used in wearable devices owing to their high humidity resistance and non-volatility. However, the applicability of existing ionic gel pressure sensors is limited by their low sensitivity. Therefore, it is very important to develop an ionic gel pressure sensor with high sensitivity and a wide pressure detection range without sacrificing mechanical stretchability and self-healing ability. Herein, we report an effective strategy for developing pressure sensors based on ionic gel composites consisting of high-molecular-weight polymers, ionic liquids, and Au nanoparticles. The resulting capacitive pressure sensors exhibit high pressure sensitivity, fast response, and excellent self-healing properties. The sensors composed of highly hydrophobic polymers and ionic liquids can be used to track underwater movements, demonstrating broad application prospects in human motion state monitoring and underwater mechanical operations.
A binder-free CF|PANI composite electrode with excellent capacitance for asymmetric supercapacitors
Authors: Li Kexin , Yue Gentian , Tan Furui 
Published: March 2023

Abstract
In this work, carbon fiber and polyaniline (CF|PANI) composites are prepared by using an electrochemical polymerization method. The morphology and composition characterization results show that the PANI nanospheres are successfully synthesized and uniformly coated on the CF. When the electrodeposition period is 300 cycles, the as-prepared CF|PANI electrode exhibits good specific capacitance of 231.63 F/g at 1 A/g, high performance of 98.14% retention rate from 0.5 to 20 A/g, and excellent cycle stability with only 0.96% capacity loss after 1000 cycles. This is ascribed to the internal resistance that was significantly reduced without binders, which helps to the CF|PANI electrode maintains high operating potential and pseudo-capacitance performance at high current density. The symmetrical supercapacitor based on two CF|PANI electrodes connecting by acidic PVA-H2SO4 gel electrolyte exhibits an energy density of 6.55 W·h/kg at a power density of 564.37 W/kg. In addition, the asymmetric supercapacitor based on MoS2|MWCNTs and CF|PANI electrodes with neutral PVA-Na2SO4 gel electrolyte shows an energy density of 16.12 W·h/kg at a power density of 525.03 W/kg. These results indicate that the low internal resistance contributes to the high energy density of symmetrical supercapacitors and asymmetric supercapacitors at high current density and high power density, which is significant for its practical application.
The use of machine learning methods to predict the processes and results of high-voltage electric discharge processing of titanium powder in kerosene with the implementation of volume-distributed multi-spark discharge
Authors: Prystash M S , Prystash S F , Torpakov A S , Lypian Ye V , Syzonenko O M 
Published: March 2023

Abstract
The possibility of using machine learning methods to predict the results of high-voltage electric discharge treatment of titanium powder in a hydrocarbon liquid is studied. Distribution surfaces for the average particle diameter of Titanium powder. The amount of Titanium carbide formed during processing, and the number of spherical particles of titanium powder depending on the interelectrode gap and the number of pulses, when using volume-distributed multi-spark discharge and with Titanium powder concentration in kerosene of 0.07 kg / dm3, pulse repetition frequency 0.3 Hz and the energy of single discharge of 1 kJ, were obtained.
The Influence of the Relative Motion Dynamics of the Wheeled Vehicle Sprung and Unsprung Part on the Motion Stability along Curved Road Sections
Authors: Nanivskyi R 
Published: March 2023

Abstract
The research method of the influence of the main suspension parameters on the motion stability of a wheeled vehicle was developed on the basis of a flat model of the dynamics of its relative motion. The mathematical model is a system of two nonlinear differential equations of the second order. The basic parameters of transverse angular oscillations of the sprung and unsprung part, which determine the dynamics of relative motion, are described using the basic principles of the perturbation method in combination with Ateb-functions. Kinetostatic equations and conditions of motion stability in the aggregate made it possible to determine the critical value of the steady motion speed as a function of the main parameters that characterize the suspension and the oscillations amplitudes of the sprung and unsprung part.
It was established that an increase in the oscillations amplitude of the unsprung part from 0.01 rad to 0.015 rad causes a decrease in the critical speed of steady motion by up to 35%.
The main results can serve as a basis for the suspension modernization of wheeled vehicle, and their reliability is confirmed by obtaining, in the extreme case, known results concerning suspensions with linear characteristics of elastic elements and damping devices
Approximate calculation of natural frequencies of oscillations of the diamond-shaped plates of the discrete-continuous inter-resonance vibrating table
Authors: Lanets O S , Maistruk P V , Derevenko I A , Ya Kachmar R , Hordieiev A I 
Published: March 2023

Abstract
Conventional single- and two-mass vibrating machines do not have a sufficient level of energy efficiency. There are vibration machines based on inter-resonance oscillating systems, which make possible the significant reduction in the use of electricity. To implement highly effective inter-resonance operation modes of vibrating machines, the oscillating masses of such a system must precisely calculate values of inertial-rigid parameters, as well as their frequency of oscillations. Since the synthesis of continuous sections into classical discrete models of multi-mass mechanical oscillating systems has recently become widespread, the most optimal option is to use a continuous member as a reactive mass of a vibrating machine. The continuous member combines inertial and stiffness parameters and makes it extremely easy to perform the reactive mass. In particular, rectangular plates are used as continuous members. The rectangular shape of the plate is not the only option for making a continuous member. This paper proposes the construction of a discrete-continuous inter-resonance vibration machine with electromagnets, where a diamond-shaped plate is used as a continuous member. The authors carried out the computation of the first natural frequency of the diamond-shaped plate using the Rayleigh-Ritz method with the equation of the hyperboloid. The determined eigenfrequency was confirmed in the Ansys software.
Bending of a plate with circular rigid inclusion and system of cracks on the assumption of strip crack face contact
Authors: Slobodian M S , Bilash O V , Seliverstov R H , Kurotchyn L R 
Published: March 2023

Abstract
The article presents a solution to the bending problem for an infinite isotropic plate with a circular rigid inclusion and arbitrarily oriented straight through cracks. It is assumed that under the action of an external load at infinity, the faces of all cracks are in smooth contact along a region of constant width near the upper surface of the plate. The solution is obtained using methods of the theory of functions of complex variable and complex potentials and is reduced to a system of singular integral equations, which is numerically solved by the mechanical quadrature method. On the basis of numerical analysis, the graphical dependences of the contact force, forces and moments intensity factors are constructed at various parameters of the problem.
Research of the influence of car suspension characteristics on the dynamics of its sprung part
Authors: Hrubel M.H. , Kovalchuk R.A. , Lanets O.V. 
Published: March 2023

Abstract
A method of determining the parameters of the car suspension has been developed, which allows taking into account the influence of the main characteristics of the suspension. In particular, the influence of static deformation, nonlinearity parameter, and such external factors as the movement of a car over rough terrain, stability of movement are taken into account. Mathematical models of vertical oscillations - dynamics of the sprung part of the vehicle with non-linear force characteristics - have been improved for the specified method. With this aim, a mathematical apparatus was developed for the analytical research of the influence of vertical oscillations on traction-speed characteristics, performance, smoothness, and stability of movement.
Prediction of strength of multi-support overground segment of main pipeline
Authors: Dzyubyk A R , Dzyubyk L W 
Published: March 2023

Abstract
A problem of strength of a main pipeline in its zone of rectilinear overground passage through an obstacle is considered in the given case. In the given case. It is not the overground multi-support segment alone that is included in the calculation, the adjacent underground parts which are situated at a certain distance from the ground are also taken into account here. The pipeline is described by a beam model with piece-wise constant rigidity, i. e. each segment of the pipeline i of constant rigidity. This allows us to more accurately characterize different thicknesses of pipes of the overground segment of the main pipeline in its construction. There is also assumed that the overground segment of the pipeline is freely positioned and rests on the corresponding supporting elements. The latest can be mutually adjusted for the given altitude. This allows us to evaluate the strength in repairing lifting the pipe over supports. The supporting elements can also experience elastic deformations. Their case is the mechanical compliance of component parts of the supporting assembly and, especially that of the ground under the support. The entrance and the exit of the overground segment into the ground are also considered as supporting elements. Here, they can have vertical displacements and turns. They also take into account the weight of the ground over the pipeline. The calculation of a main oil pipeline with its overground segment resting on two supports has been carried out. There are taken real conditions of operational loading caused to be the following factors: internal pressure, temperature difference, and the weight of the product transported. It has been established that the maximal values of stresses are observed in support sections and between the supports. It is shown that the stresses caused by bending moment can amount to up to half the total value. The influence of altitudes upon the value caused by bending moment stresses in the pipeline is investigated. The change of stresses caused by mechanical compliance of elements of the supports and by adjusting vertical displacements of the supports during repair was studied.
Design and technological aspects of functionally oriented technology of manufacturing the three-cone drill bits
Authors: Slipchuk A M , Jakym R S , Korendiy V M , Lytvyniak Y M 
Published: March 2023

Abstract
The quality and efficiency of the drilling process significantly depend on the design parameters and operational peculiarities of the drill bit cutter. The present paper is focused on developing the functionally oriented technology of manufacturing the three-cone drill bits. The research methodology involves the theoretical and experimental studies dedicated to analysing the main reasons for the loss of the cutters working capacity, and the technological factors that affect the strength and durability of the “tooth – cutter” press connection. The major scientific novelty consists in defining the relationships between the design parameters of the cutters, their kinematics, dynamics, and operational conditions. It has been established that the destruction of the rock by the three-cone drill bits is carried out by applying successive impacts of the tipped hard-alloyed teeth upon the rock. The rolling of the cutters (bits) along a face (stope) exerts a dynamic effect due to the alternate change of the contact of the teeth with the rock, and the axial load on the bit ensures that the striking part of the teeth is pressed into the rock. The character of wear and destruction of the tipped teeth also has an important influence. During the drilling process, the rock-destructing parts (teeth), as well as the working areas of the cutters, undergo intensive wear and failure. This leads to a significant decrease in the quality of the rock destruction process and a reduction in the drilling efficiency. The obtained results have a significant practical value and can be effectively used by designers, technologists and researchers while implementing the energy-efficient drilling technologies.
Development of the material homogeneity criterion for the analysis of processes of technological inheritability for quality parameters of machine parts
Authors: Kusyi Ya M , Onysko O R , Kuk A M , Zinko A V 
Published: March 2023

Abstract
The material homogeneity criterion and the indicators characterized by this criterion were developed due to the LM-hardness method. The research results were tried out during the manufacturing of steel shaft. The values of the Weibull homogeneity coefficient during shaft’s machining increase from 6.12-11.46 (for initial workpiece) to 198.23-344.59 (for finish part) during its manufacturing. Besides the constant of the material Am in the manufacturing chain “initial workpiece – finish part” changes from 0.814 to 0.966 for different necks of the shaft during its machining by cutting and abrasive methods. The elaborated method can be used when manufacturing and operation of different mechanical engineering parts for analysis of the change of their material homogeneity during machining, control and determining of their residual life.