The effects of the basement storey on the seismic behavior of RC buildings built on near-surface alluvial soft soil are studied in this study. Numerical building models with and without a basement and with different numbers of stories are developed. Time-history dynamic analysis of the structure–soil models was performed using the specialized geotechnical software package PLAXIS-2D. In the first phase

This study was aimed to develop an electrochemical electrode for the degradation of chemical oxygen demand (COD) of the textile industrial wastewater using a full factorial experimental design. Electrochemical method is noble, effective, and efficient in solving the current environmental pollution challenge. Characterization of the textile industrial wastewater was carried out as per the standard method

The geometrical molecular structures, atomic charges, frontier molecular orbitals, and UV–visible electronic data of analgesic drugs carfentanil and acetylfentanyl were computed using quantum chemical code. In addition, NMR (1H and 13C) chemical shifts, harmonic vibrational wavenumbers, and the corresponding vibrational assignments were proposed on the basis of potential energy distribution. The calculations

Small-scale ducted fans can be used to generate the necessary force and moment for propulsion in many applications. In the present work, the aerodynamic performance of a ducted fans system (DFS), which consists two distinct counter-rotating ducted fans, is analyzed numerically by considering the influence of different geometrical parameters that include rotational speed, eccentricity, and the distance

In this work, non-equilibrium atmospheric-pressure plasma was introduced over an aqueous solution as a medium to depolymerise lignin employing an applied voltage of 10 kV and a frequency of 10 kHz. As a starting material, lignin was extracted from Japanese cedar wood flour utilising a deep eutectic solvent (DES) at 50–120 °C. The Fourier-transform infrared (FT–IR) spectra indicated that lignin was

Availability of synchronized measurements provides an avenue for real-time measurement-based estimation of load model parameters. The presence of noise and outliers in actual PMU data makes it essential to develop estimation approaches robust to noise and outliers. Robust load parameter estimation is identified as the major goal in this research. This paper presents a time-series ML framework for robust

Bad smells are indicators of possible problems in software. Refactoring is usually undertaken to eradicate bad smells. Many studies have investigated the impact of bad smells on software quality, however, only a few have proposed methods to prioritize bad smells. The objective of this paper is to propose a model to prioritize bad smells based on their impact on software maintainability. We use the

Cold patch asphalt is more preferable in pavement construction compared to hot mix asphalt from the perspective of environmental conservation. However, the cold patch asphalt mixture is prone to moisture damage for production at lower temperatures and the presence of a diluent. The objective of this paper is to evaluate the moisture induce damage potential of cold patch asphalt mixture based on surface

This paper introduces an analytical model of contaminated insulators under critical conditions. The dynamic mathematical model based on the description of the equivalent electrical circuit approach and the criterion for the propagation of discharge has been improved. A few laboratory tests were conducted on practical insulators installed to measure the flashover voltage and determine dynamic arc parameters

This paper proposes a novel cognitive control strategy for overcoming the impacts of time-varying delay and data packet losses in networked control system. The Bernoulli distribution is used to characterize the packet losses and time-varying delay. Then, the information entropy is employed for computing the corresponding uncertainties and describe the information gap in the cognitive control. With

In this paper, MgO and CuO/MgO nanomaterials were green-synthesized by Opuntia monacantha plant extract. Phytochemical analysis of methanolic extract of the plant showed the presence of terpenoids and flavonoids which are responsible for the synthesis of nanoparticles. XRD revealed the crystalline nature of cubical MgO and CuO/MgO nanocomposite that exhibited additional peaks related to CuO nanomaterial

Dimensions of impellers and cylindrical containers of available rotational concrete rheometers vary considerably. Consequently, the volume of fresh concrete to be tested varies from rheometer to rheometer. In some rheometer, volume is 7.0 L and in some case, it is as high as 500 L. Till date, no attempt has been made so far to arrive at optimum geometrical features of rotational concrete rheometers

A series of acid-activated catalyst were prepared by activating TiO2 using different acids, and subsequent catalytic performance was evaluated for isomerization of alpha pinene. The prepared catalysts were also characterized using SEM, XRD, FTIR, TPD and BET methods to understand the effect of type of acid on the catalyst characteristics. It was demonstrated that catalyst surface area and total acidity

Studies on the usage of gasoline–alcohol blends as an alternative fuel in spark-ignition engines have recently gained momentum. In the present research, energy, exergy, environmental, enviroeconomic, exergoenvironmental, and exergoenviroeconomic analyses were conducted with the performance and emission values acquired by utilizing gasoline, gasoline–heptanol, and gasoline–hexanol fuels (G100, HEX5-20

The aim of this work is to investigate a fluid–structure interaction problem, in which the chip formation and the fluid flow are coupled. Two simulation methods are developed in the commercial finite-element code ABAQUS/Explicit: the coupled Smoothed Particle Hydrodynamics–Lagrangian (SPH-L) approach and the coupled Eulerian–Lagrangian (CEL) approach. The models combine the Lagrangian approach to model

Land use and census data are of a significant value to urban planners, decision-makers, and investors. Important decisions are made based upon historical data, i.e, inductive reasoning. Such data become increasingly valuable at a fine-grain level to decision-makers in businesses where audience segmentation is needed. In rapidly developing countries, land use and census data are widely available at

The deformation failure of a shield segment joint can lead to serious leakage, and the joint must therefore be reinforced in advance to control its deformation. The combination of a bolt and positioning tenon, as a new type of reinforcement, can quickly control the deformation of shield segment joints. Numerical simulation is conducted to analyze the variation characteristics of bolt stress, bolt groove

The microwave-assisted extractions (MAE) of Ocimum basilicum L. (basil) seed, Trigonella foenum-graecum (fenugreek) seed, and Plantago ovata Forsk (psyllium) seed husk hydrocolloids (BSH, FSH, and PSH, respectively) were performed at their maximum desirability function (for BSH) or optimum (for FSH and PSH) conditions and compared with conventional heating extraction (CHE). The extraction conditions

B-Sr isotopes and selected trace elements were used to assess the multiphase fluid flow path in the Changbaishan volcanic two-phase geothermal system (Jilin, Northeast China). The Ca/Sr ratio can distinguish volcanic and sedimentary rock reservoirs, while clastic and carbonate rocks need to be combined with the Sr/Na ratio. The lithology of the reservoir can be further ensured through contrastive water

The phenomenon of magnetization of water by an electromagnetic field (EMF) represented a major challenge in the current research. The aim of this work is to improve the efficiency of the electromagnetic device and make the magnetic treatment as efficient as possible. In other words, the characterizations of the parameters that influence the process of magnetization of tap water (TW) were investigated

Stable α-alumina-water-ethylene glycol (WEG) based nanofluids with a low viscosity requirement are preferable for promising engineering applications. Viscosity of nanofluids is a significant parameter that decides the flow characteristics and pumping pressure requirements. In this study, α-alumina nanoparticles (spherical morphology with 40 nm) dispersed in WEG mixture in a ratio of 50:50 (v/v) using

Tunnel lining stiffness, grout strength and shield-driven speed are important parameters that influence ground surface settlement during tunnel excavation. Optimising these parameters would allow effective control of ground settlement during tunnel construction, specifically the maximum settlement. This paper investigated the influence of tunnel lining stiffness, grout strength and shield-driven speed

Zhongshan Station (69° 22′24.76 ′′s, 76°22′14.28′′E) is located in the Westoden Peninsula, Larsemann Hills area, Princess Elizabeth Islands, East Antarctica. Here, we report results from a magnetotelluric experiment and delineate the deep electrical conductivity structure beside the Zhongshan Station by using the data acquired during the 36th Chinese Antarctic Scientific Expedition. Magnetotelluric

Cloud computing along with the Internet of Things (IoT) is proving to be an essential tool for delivering better healthcare services. However, maintenance, privacy, confidentiality, and security of Electronic Health Information (EHI) pose a huge challenge in telemedicine. The sharing of EHI with a remote doctor over the cloud is an important issue since the minute variation may lead to the wrong diagnosis

Given the pharmacological significance of 8-quinolinols and benzimidazoles, in the present paper, two series of new N-Heterocyclic having 8-quinolinol and benzimidazole moieties within a single molecular framework were prepared and characterized by elemental analysis, IR, and 13C/1H NMR techniques. To evaluate the desired compound as DNA-binder 3a, 3d, 7a, and 7d were docked with 1BNA DNA using AutoDock

This paper aims to study the possibility of deployment of free-space optical communication (FSOC) links in India. We have focused on different locations of India for investigating the feasibility of the FSOC link, and it includes the coastal and inland locations, representing the major commercial areas of India. The atmospheric data related to daily visibilities and wind speeds, over 5 years, along

The wet joint's mechanical performance determines the service performance of the prefabricated bridge deck. UHPC has an excellent application prospect in the 'joint area' of precast assembly bridge. This paper presents an experimental study to analyze the flexural behavior of the UHPC wet joint (with joint width of 15 cm) of the prefabricated bridge deck. Four specimens of prefabricated bridge deck

Enantiomerically pure (S)-1-(4-methoxyphenyl) ethanol is a significant molecule for the production of various drug intermediates. (S)-1-(4-methoxyphenyl) ethanol was synthesized from 4-methoxyacetophenone using Lactobacillus senmaizuke as a biocatalyst. In addition, optimization of experimental conditions is important to analyze the role of culture parameters for catalytic bioreduction reactions. For

In the current Internet era, there exists rapid spread of fake news, which could lead to serious problems. Many artificial intelligence approaches have been deployed to address the problem; however, fake news detection remains a challenge. To detect a fake news, an understanding of certain actors, entities and the relation of between each word in a long text is essential. Many approaches fail to incorporate

In the present research, the information on compressive strength of self-compacting concrete (SCC) containing rice husk ash (RHA) and calcium carbide waste (CCW) as an admixture cured for 28 days was provided. The research applied feedforward propagation neural network (FFNN), emotional neural network (EANN), and conventional linear regression (LR) in the prediction of compressive in which FFNN, EANN

Replacing natural gas with the environmentally sustainable biogas is a promising way to reduce the usage of fossil fuels and promote organic waste utilization. Micro gas turbine (MGT), as a common power supply machine, is capable of adopting biogas as the fuel. Given the different intrinsic components between natural gas and biogas, combustion performance of biogas in MGT was studied in this work.

The studied sulfide mineralizations of Atshan and Darhib areas are related to the south Eastern Desert shear zones. They are hosted in talc- and tremolite-talc-rich rocks and also in meta-basaltic dykes and quartz-veins. The principal mineralization in Atshan includes sphalerite, pyrite, chalcopyrite, galena and pyrrhotite, whereas that in Darhib comprises chalcopyrite, sphalerite, pyrite, and galena

Frequent droughts can cause severe losses to economy, society, and environment. This study aims to develop a remote sensing-based drought monitoring and information management system (RDMIMS) to help managers to better understand the regional drought situation and define quick and responsive measures. RDMIMS includes four modules for data management, drought monitoring and analysis, business operation

Scheduling workflows in IaaS cloud infrastructure has become a research issue. Considering multiple objectives for optimizing in scheduling workflows makes it difficult to adapt the cloud computing features like resource heterogeneity and elasticity on pay-per-use business model. This paper highlights such problems and suggests a workflow scheduling model to minimize the makespan and execution cost

Recoil momentum due to ablated products in the laser ablation process is the dominant source of thrust generation. The total momentum comprises the laser-supported shock wave in background gas and the momentum due to material flow. Based on experimental studies, the dependence of laser ablation propulsion parameters of metal foils has been investigated in atmospheric air. A Q-switched Nd:YAG laser

Valleytronic device based on graphene is recently attracting growing interest because of its potential applications such as in quantum information storage and transmission. However, one of the major challenges in designing valleytronic devices is to realize the large valley polarization. Therefore, in the present work, we investigate the effect of the electrostatic barrier on the valley polarization

This paper presents an efficient design of several inverse filters, ILPF, IHPF, IBPF and IBRF. The designs are based on a modified second-generation voltage conveyor (VCII). The proposed filters utilize four grounded passive components and two active blocks. Moreover, the designed circuits can be either a current-mode or a voltage-mode depending on the application under consideration. The functionality

Uniaxial compressive strength (UCS) of rocks is the most commonly used parameter in geo-engineering application. However, this parameter is hard for measurement due to a time consuming and requires expensive equipment. Therefore, obtaining this value indirectly using non-destructive testing methods has been a frequently preferred method for a long time. In order to obtain multiple regression models

The electrochemical corrosion behavior of an aged Fe-18Cr-15Mn-0.66 N high-nitrogen austenitic stainless steel in 3.5 wt.% NaCl solution was studied using the measurements of polarization curves and electrochemical impedance spectroscopy, and the composition of the passive films formed on the HNSS was investigated using x-ray photoelectron spectroscopy (XPS). XPS analyses results showed that the passive

Effects of phase change specially steam condensation in enhanced oil recovery (EOR) processes such as steam assisted gravity drainage are a key important factor. Due to the last developments in nanotechnology, it is of great interest to use nanoparticles along with hot fluids to increase EOR efficiency. In current research, effects of phase change (steam condensation) on oil recovery from a two-dimensional

As the increasing trend of global consumption of waste electrical and electronic equipment (WEEE), the recycling of WEEE has been thought highly of. In order to solve the problems of high economic cost, environmental detrimental caused by improper recycling, ignorance of social benefits of recycling, uncertain recycling amount and single recycling channel in recycling process of WEEE, this paper proposes

Due to the current financial constraints in the energy industry, investors need realistic risk evaluation and economic analysis in energy investment projects. On the other hand, energy system operators are continuously facing a wide range of challenges when dealing with asset management practices of the system components. In this paper, a novel method is proposed for the availability assessment of

An electrochemical sensor with high sensitivity and selectivity and excellent stability was developed for the determination of sofosbuvir (SOF), based on molecular imprinting strategy. The imprinted polymer was fabricated using acrylamide and methacrylic acid as monomers, 2, 2′-azobisisobutyronitrile (initiator), SOF as a template and ethylene glycol dimethacrylate (cross-linker). Fourier transform

Aiming at the requirement of obtaining the panorama of the worktable in the automatic cutting system of workpiece groove based on machine vision, an image registration algorithm based on SIFT and improved PROSAC is proposed. First, SIFT algorithm is used for feature detection and feature description. Then, the bidirectional matching and cosine similarity method are used for rough matching of feature

First-principles calculations were performed on the cubic rocksalt Cd0.75TM0.25O (TM = Mn, Fe, Co, and Ni) compounds to investigate the effect of 3d transition metals (TM) substitution on the structure, magnetic, electronic, and elastic characteristics by utilizing the full-potential linearized augmented plane wave route. The calculations were performed in the framework of the density functional theory

The paper presents a novel approach for low-order harmonic power mitigation in a single-phase, three-level DC/AC inverter. Traditionally, a bulk electrolytic capacitor is used at the DC bus to eliminate the low-frequency ripple. However, owing to the low-frequency components and large capacitor, this technique is not a practical solution. A new active filtering technique using a ripple port without

In this paper, MCNP5 code is used to establish a landmine clearance system based on pulse fast thermal neutron method. The system prototype is modeled based on the NG-9 D-T neutron generator, which is independently developed by Northeast Normal University. Gamma rays produced by fast neutron inelastic scattering and thermal neutron capture are used to identify suspicious areas. The neutron flux passing

Ant colony optimization has insufficient convergence and tends to fall into the local optima when solving the traveling salesman problem. This paper proposes a co-evolutionary multi-colony ant colony optimization (MCGACO) to overcome this deficiency and applies it to the Robot Path Planning. First, a dynamic grouping cooperation algorithm, combined with Ant Colony System and Max-Min Ant System, is

In this paper, risk-based energy management for a virtual power plant (VPP) participation in reserve and energy markets is presented. The proposed VPP consists of various power generation sources, including wind turbines, photovoltaics (PV),combined heat and power (CHP) units, microturbines, and boilers; power storage sources, including battery storage systems (BSS) and thermal buffer tank (BT); and

In this study, Jatropha seed shells from Yemeni plant have been tested for studying adsorption of treated seeds shells to remove chlorophenol compounds. The resulting adsorbents were designated as JAT1, JAT2 and JAT3. Most of the acidic groups on the surface were found to be phenolic in nature (37.5% in the case of JAT1 and 60% in the case of JAT). The adsorption of chlorophenol on JAT1, JAT2 and JAT3

A correction to this paper has been published: https://doi.org/10.1007/s13369-021-05726-0

Mobile data collectors that can be used without a central control mechanism currently have common use in many fields. Because they do not need a central unit, each node in a network can move independently. The field literature offers various group- or entity-based models to define the functioning of mobile data collectors. In this study, a random entity mobility model (REMM) research was performed

Software restructuring is a crucial problem in software engineering. Improving the package structure of a large and complex object-oriented software system with minimum possible modification is an emerging software restructuring problem. To address the different aspects of software restructuring problems, many approaches based on deterministic and search-based optimization algorithms have been proposed

Several dynamic substitution box (S-box) generators have been proposed in recent years. Some of the existing S-box generators can generate an S-box with good cryptographic properties. However, no analysis has been performed for almost all generators to confirm if they can output highly dynamic S-boxes in a reasonable computational complexity. This article aims to propose an S-box generator that can

In this study, developments in face recognition are examined. Some methods are presented to increase the accuracy rate in face recognition by using transfer learning with VGGFace2 dataset and 4 different CNN models. While some of these tested offers decreased the accuracy rate, some of them increased. Effects of histogram balancing, expanding the training data, extracting the effect of non-facial portions

This paper introduces a novel method for Arabic text steganography for irreversible practical usage that involves using the spaces in Unicode standard. The method also benefits from several characters in the Arabic language that can be changed based on their locations within words. The main innovation of this proposed method is the utilization of the different typescripts of Unicode standard for each

Road safety guidelines are not properly implemented and are not diverse enough to counter an annual increase in traffic volume. The mitigation techniques of road regulating bodies have failed in minimizing road accidents with the increase in road users. Therefore, the purpose of this study is to provide valuable insight to the facilitators and decision-making stakeholders by predicting the number of

Electrical discharge machining (EDM) is the unconventional machining technique used extensively for machining difficult-to-machine materials with lower material removal rate and poor surface roughness. To overcome these drawbacks, synthetic dielectric fluid is replaced with nanoparticle-infused biodegradable dielectric fluid in the machining of Hastelloy material. This paper focusses on the machining

Anxiety is usually transient in nature, but if the symptoms are severe and persistent in the absence of stressor, then it is considered as anxiety disorder. Corona virus disease 2019 (COVID-19) which was declared as pandemic by World Health Organization in March 2020 affected the lives of human beings worldwide. A panic and anxious situation was created due to the outbreak of COVID-19. Medical health

Digital transactions using credit cards are observed to be increasing day by day because of the convenience in operation. It is a matter of great concern for credit card users as well as financial institutions, providing credit card facilities for making the transactions free from possible frauds being carried out by fraudsters. The fraudsters apply different methodologies and alter their behaviours