In this paper, the dilatancy stress and mechanical characterization of sandstone were evaluated under uniaxial loading at different elastic modulus and porosity conditions. The prediction model of dilatancy stress was established using a regression equation and an artificial neural network based on a multilayer perceptron (ANN–MLP). The results indicate that: (1) The rock crack initiation stress, dilatancy

Indium-doped titanium oxide (In-TiO2) anatase nanostructure with macro- and microporosity was synthesized by green method using aqueous plant waste extract as bio-template and ultrasonic waves instead of hazardous chemicals and solvents and energy consuming method. The efficiency of the as-synthesized green nanoparticles has been tested for degradation of organic pollutants and against gram-negative

3D TiO2 hierarchical nanoflower was synthesized by template-free solvothermal alcoholysis of TiCl3 with the variation of reaction temperatures (130–200 °C). XRD, SEM, BET surface analysis, UV–VIS DR spectroscopy, FTIR analysis were performed to characterize the prepared TiO2 samples. Photocatalytic degradation of model organic pollutant such as methylene blue (MB) dye was investigated using all prepared

Head detection-based crowd counting is of great importance and serves as a preprocessing step in many visual applications, for example, counting, tracking, and crowd dynamics understanding. Despite significant importance, limited amount of work is reported in the literature to detect human heads in high-density crowds. The problem of detecting heads in crowded scenes is challenging due to significant

The internal microstructure of rock has an important influence on its macroscopic mechanical properties and fracture mechanism. In this paper, an equivalent crystal model (ECM) consisting of a bonded particle model and smooth joint model is established, which can simultaneously reflect the structure and content of mineral granules in rock. To verify the applicability and reliability of the ECM to further

Fast pyrolysis is considered an emerging technology for biomass conversion into liquid oil. In this paper, the conversion of waste from Isoberlina doka tree processing into bio-oil using a bench-scale fixed bed reactor with a fluidized behavior within the bed zone has been investigated at temperatures of 400–500 °C and particle size ranges of < 0.5 and 0.5–1 mm. Reactor with the total height of 140 mm

Brass materials are widely used in many fields of machinery, especially plumbing applications. Parts produced from brass are processed in lathes or milling machines during the manufacturing phase. In this study, 6-corner pieces were produced by machining the MS58 brass alloy on the C-axis lathe with an end mill. As machining parameters, tool diameter, feedrate and rotation speed were selected. The

The cylindrical mold is an essential part used in industries for the manufacturing of various cylindrical products such as beverages canes, domestics appliances, glass beakers, and polyvinyl chloride pipes. These products require features in its surfaces such as defect-free surfaces with high-quality, stable dimensions, the high extent of cylindricity, and functional transparency in glass material

Aeration by plunging water jets is an effective and economical method of transferring oxygen into the receiving pool of water. A dispersion of air bubbles occurs underneath the pool surface as a high-velocity liquid jet plunges on the water surface after being ejected from a particular fall height. The present study aims to investigate the impact of jet velocity, jet length, water depth and jet thickness

Hybrid natural fibre reinforced polymer composites have emerged as an eco-friendly alternative to conventional structural materials due to their low cost and high strength-to-weight ratio. It is evident from the literature that polymer composites have found their place in tribological applications too. Therefore, in this research work, hybrid abaca–epoxy composites were fabricated using hand layup

The current work presents numerical modeling of cold expansion of down-hole expandable tubular through the multistage solid metallic mandrel. Down-hole tubular has demonstrated to be a promising technology in the oil and gas industry by providing optimum solutions for multiple unsolved issues. One of the challenges still confronting by researchers and field engineers is implementing and making this

The ever-increasing computational power of the electronic devices accompanies a greater power dissipation. Understanding and optimization of the heat rejection systems are thus vital to ensure effective thermal management of electronic devices in an often highly confined space. This paper reports the design, development, and results of an experimental investigation of a fast responding and passive

Installing capacitors to correct the power factor at particular locations is one way to enhance power system reliability. This paper offers a new formulation to address the issue of optimal placing capacitors. The proposed formulation considers reliability impact, in addition to the transient switching events. This is reflected in the cost minimization objective function, where the reliability calculations

Electrochemical discharge machining (ECDM) is a triumphant process for producing micro-holes in glass materials and yet holds the potential for improvement. In ECDM, electrolyte selection is crucial as it controls the spark pattern and flushes debris from the machining zone. Despite numerous experimental studies, few analytical studies were reported for ECDM modeling and finite element modeling-based

In [1], we have assumed that suction velocity has the form

Uplift has been used as a mitigation measure to reduce lateral forces in structures. Previous studies had focused mainly on the effect of single column uplift with complex mechanism (particularly in three-dimensional structure) and favourable results were obtained. There is a need to explore consequence of multiple uplifts to be provided with simple technique. Uplift provision can be made with different

Road maintenance in winter is one of the road engineers’ concerns, especially asphalt specialists. As pavement frosts lead to road closures and accidents, one of the ways to prevent these events is spraying deicer materials on the pavement surface. Therefore, investigation of the impact of the deicer materials on asphalt is essential. So in this study, the effect of deicer materials on the moisture

The 4IR technology has assumed critical importance in the oil and gas industry, enabling automation at an unprecedented level. Advanced algorithms are deployed in enhancing production forecast and maximize sweep efficiency. A novel sparsity-based reinforcement learning algorithm, utilizing a surface response model approach, was developed for the estimation of hydrocarbon saturation in the interwell

We have synthesized a ternary glycine-functionalized graphene/Fe3O4 nanocomposite referred as Gr/Fe@Gly NC which was characterized by fourier transform infrared spectroscopy analysis (FT-IR), X-ray diffraction, high-resolution scanning electron microscopy/energy-dispersive X-ray spectroscopy (HR-SEM/EDS) and the transmission electron microscopy. The effectiveness of synthesized nanocomposite as anticorrosive

In this paper, the casing strings of cement slurry during the curing period are taken as the research object in order to build a force model, with comprehensively considering the influence factors such as the phase transition heat transfer and volume change of the cement slurry during the curing period. The random contacts between casings and well walls were simulated by establishing a gap element

Photoelectrochemical (PEC) water splitting is the latest technology to produce hydrogen and electricity by using sunlight. The low bandgap of tungsten oxide (WO3) enables it as a suitable candidate for PEC water splitting. Reduced graphene oxide (rGO) is a material having extra thin sheets and a very large surface area with extreme conductivity. Graphene oxide (GO) has been synthesized by using a modified

This paper presents the green synthesis of silver nanoparticles (AgNPs) using orange (Citrus sinensis) peel extract. The effects of different factors such as silver ion concentration, reaction time, temperature, pH, and extract quantity on the AgNPs synthesis were studied, enabling us to determine optimum synthesis conditions. We characterized the AgNPs with different techniques: UV–Visible Spectroscopy

Antibiotic resistance and need for novel antibiotics have seen focus on antimicrobial peptides (AMPs) increase in recent years. The study investigated purification and de novo characterization of an AMP compound produced by bioactive Geotrichum candidum OMON-1. Antimicrobial extract of G. candidum OMON-1 was purified via reverse-phase high-performance liquid chromatography (RP-HPLC). Purified compound

This article studies the effect of nanoparticle aggregation on the 3D flow of titanium nanoliquid based on ethylene glycol \( ( {\text{C}}_{ 2} {\text{H}}_{ 6} {\text{O}}_{2} - {\text{TiO}}_{2} ) \) due to an exponentially elongated surface. Thermal analysis is carried out considering linear thermal radiation, Joule heating, and mechanisms of the heat source/sink, while the aspect of the homogeneous

Fine-grained metals and alloys with a homogeneous microstructure can be produced in bulk quantities using the equal channel angular pressing (ECAP) technique. In the ECAP process, improvements in desired properties and grain refinement depend on die geometry, number of passes, strain per pass, plunger speed, friction conditions, processing temperature, etc. In the present study, Al-6063 alloy cylindrical

Over the past few decades, time series forecasting (TSF) has been predominantly performed using different artificial neural network (ANN) models. However, the performance of ANN models in TSF has not yet been fully explored due to several issues like the determination of near-optimal ANN architecture for a time series and the efficiency of training algorithm used to determine the near-optimal weights

Due to the harmful effects to environment and public health, lead has to be removed from wastewater. The novelty of this study is the investigation of the adsorption of lead by a cross-linked polycarboxylate-based adsorbent synthesized, the characterization of adsorbent with FTIR, SEM–EDS, XRD and the optimization of the effective parameters such as initial lead concentration, pH and temperature by

In this article, we have considered unsteady squeezing flow between two infinite parallel plates. The time-dependent magnetic field normal to the plate surface is taken into consideration with fluid thermal radiations. Fluid dynamic viscosity is sensitive to temperature. Governing partial differential equations (PDE) are transformed into ordinary differential equations (ODE) by introducing suitable

This paper describes a novel multistage CIC filter which plays a vital role in software-defined radio (SDR) applications. In order to operate the baseband signal, wireless networking standards demand different sample rates. As a result, sample rate conversion (SRC) turns out as a pivotal method of SDR. Thus, cascaded integrator comb (CIC) filter is a distinct kind of linear-phase FIR filter which can

In this study, a speed sensorless algorithm was developed to control a single-link manipulator connected to DC motor. The armature voltage value can be obtained by using duty cycle information generated by the controller without using any sensor. Thus, the proposed system does not require any additional measurement sensor. This paper presents a study for artificial neural network (ANN)-based speed

A quantitative analysis of coccoliths is presented in 18 core-top samples ranging between 26° N and 21° N and covering two major deep brine pools in the northern part of the Red Sea. Non-brine sites are characterized by rich coccoliths that may reach up to 3.31 × 109 coccoliths/g made by 22 species, whereas brine sites of Shaban and Kebrit Deeps with additional two non-brine sites are characterized

Peristalsis of carbon nanotubes (SWCNTs, MWCNTs) submerged in water through an inclined asymmetric channel is addressed in the current work. Such mechanism is disclosed in the presence of Hall effect, viscous dissipation, and Soret and Dufour effects. Convective heat transfer at the boundaries is incorporated by utilizing efficient thermal conductivity of nanoliquid. Low Reynolds number and long wavelength

Coagulation is a water and wastewater treatment technology that has been widely used due to its high efficiency and effectiveness. Various inorganic salts are commonly used as coagulant; however, there are some negative impacts of utilization of these chemical coagulants, such as high costs, large sludge volume, and also potential negative impact to human health. To overcome these problems, natural-based

Agriculture is undoubtedly one of the biggest and most important professions in the world. Optimization of agriculture and aiming gradually and extensively toward smart agriculture are the need of the hour. IOT (Internet of Things) technology has already been successful in easing people’s lives with its wide range of applications in almost all arenas. In this paper, our work takes the help of IOT devices

The granular anchor pile foundation (GAPF) is an improved foundation technique used to withstand compressive as well as tensile forces and effectively reduce the settlement of soil. In this paper, the behavior of a GAPF system was studied in sandy soil. Pull-out load tests were conducted on GAPF by varying different parameters viz. length of pile (250 mm, 350 mm and 450 mm), L/D ratio (7.5, 10 and

Cardiotoxicity from long-term use of the anticancer drug, doxorubicin (DOX), imposes a strict limitation its administration. The health benefits of avocado seeds (AS) stem from essential nutrients and phytochemicals. This study aimed to compare effects of ethanol (EAS), and water (WAS) extracts from AS on DOX-induced cardiotoxicity. Forty adult male albino rats were divided into four groups: GI were

With the growing internet, web spam is also increasing, which majorly affect the user experiences with search engines. Web spam methods target the search engine’s internal programs to push targeted web sites at the upper positions. This paper proposed an intelligent oversampling approach based upon general type-2 fuzzy sets to balance the distribution and hence enhance the classification performance

Detrital zircon grains were collected from six samples of sedimentary rock from the Middle Jurassic Zhiluo Formation in the western Ordos Basin of China. U–Pb isotopic geochronology data were measured and used to assess the provenance and directions of sediment transport of these grains. Five age populations were recognised amongst the U–Pb age spectra: 2700–2034 Ma, 1999–1426 Ma, 1296–636 Ma, 556–323 Ma

The impact of chemical additives on the engineering properties of expansive soils has been studied in the past few years; however, the swelling properties as well as mineralogical and microstructural characteristics of expansive clay soils stabilized with NaCl solutions have not been clearly studied. This research work aims at investigating the expansion behavior of the studied clay soil before and

Blockchain technology has disclosed unprecedented opportunities in the healthcare sector by unlocking the true value of interoperability. Specifically, the striking features of blockchain technology, such as data provenance, transparency, decentralized transaction validation, and immutability, can help to compensate for stringent data management issues (e.g., patient recruitment, persistent monitoring

The novel polyethersulfone/ethylenediamine-functionalized multiwall carbon nanotubes (PES/MWCNTs-NH2) nanocomposite was synthesized and introduced as an efficient adsorbent for Pb(II) removal from aqueous solutions. The characterization analyses, including FTIR, TGA, SEM, and EDX, confirmed the successful functionalization of MWCNTs through three steps acidic treatment, acylation with SOCL2, and amine

The existing models for analyzing internally reflecting solar stills with external boosters are based on simple geometric relationships and are therefore not adequate for simulating and optimizing more complex arrangements. Therefore, this study presents a 3D hybrid ray-tracing-based model for designing and optimizing such stills. To validate the model, a geometrical arrangement was simulated, and

This study focused on the functional properties of bread incorporated with spearmint (S) aqueous extract (S1 = 0% (control), S2 = 2.5%, S3 = 5.0% and S4 = 7.5%) by measuring total phenolic content (TPC), DPPH radical scavenging activity, and ferrous-ion chelating (FIC) ability. Additionally, spearmint bread samples were compared with commercially available bread, including Roti Canai, White Bread (WB)

Noisy or corrupt images are characterized by poor contrast and ill-defined ridges and valleys. Such images need to be enhanced using suitable image enhancement techniques so that they can be used with other applications. Two improved image enhancement algorithms based on the switching median filtering are proposed in the present work. Images simulated with varying levels of Gaussian and salt-and-pepper

The sudden development of the COVID-19 pandemic has exposed the limitations in modern healthcare systems to handle public health emergencies. It is evident that adopting innovative technologies such as blockchain can help in effective planning operations and resource deployments. Blockchain technology can play an important role in the healthcare sector, such as improved clinical trial data management

Self-compacting concrete (SCC) is a liquid mixture appropriate for putting in structures with excessive reinforcement without vibration. The application of SCC has found wide use in practice. However, its application is often limited by lack of knowledge on mix material gained from laboratory tests. This paper presents a nonparametric mathematical method for the design of SCC mixes containing fly ash

Ochrosia elliptica Labill is a small tropical evergreen tree native to Oceania belonging to the Apocynaceae family. Eight alkaloids, two flavonoid glycosides and three phenolic acids were identified by LC/MS analysis. On the other hand, the quality and uniformity of the plant leaves were assessed through the determination of the total phenolic and flavonoid, in addition to total ash, acid-insoluble

Reduced graphene oxide (RGO) or graphene as it is commonly referred to is currently the most promising nanomaterial with potential applications. Synthesis of RGO starts with oxidation of graphite to graphene oxide (GO) which is further reduced either by chemical or thermal means. However, chemical reduction of GO to RGO involves the use of toxic chemical reagents which are not environmental friendly

Nickel-plated ultrahigh molecular weight polyethylene (UHMWPE) samples were prepared by an electroless coating method followed by hot pressing. The concentration of Ni in the composites was varied between 3.98 and 10.88 in volume percentage. XRD results revealed that Ni coating was successfully realized on the surface of UHWMPE particles confirmed by SEM–EDS. Ni thickness on the UHMWPE particles has

The mathematical formulations for estimating and allocating reactive power loss to network participants are highly nonlinear and mathematically complex. Consequently, the well-known solution based on traditional techniques could only be obtained through iterative procedures. An alternative computational algorithm based on network structural characteristics theory (NSCT), which provides an efficient

The intensive exploration to improve the accuracy of the calculation model of velocity slip and theoretical head has always been a major issue in pump research. Discontinuous blade of disc pump is different from the continuous blade of traditional pump. Disc pump realizes energy transfer by the effect of boundary layer. In order to fill in the theoretical blank of current research on the velocity slip

Certain materials that are used in industries to manufacture parts, components and sub-assemblies are difficult to machine using traditional machining processes. Abrasive water jet machining is a viable solution to such a problem, and its use is sought where precision is the requirement. The process involves many input controllable parameters that influence the performance characteristics of the process

Multi-objective differential evolution (MODE) algorithm has been widely used in solving multi-objective optimization problems. In this paper, a hybridization technique is proposed to improve the performance of MODE algorithm in terms of speed and convergence. The proposed hybrid MODE-dynamic-random local search (HMODE-DLS) algorithm combines MODE and dynamic-random local search (DLS) algorithm. To

In order to effectively reduce the coal dust concentration in a fully mechanized mining face, this research used laboratory experiment, numerical simulation, and field test to conduct an in-depth exploration of the ejector precipitator installed at the low-level caving coal hydraulic support. Firstly, through the experimental platform in the laboratory, the dust removal effect of the nozzle with different

The rise in business and electronic transactions using the web as a medium has driven the widespread use of recommendation systems across all domains. Recommendation systems generate suggestions for the travel and tourism industry, particularly hotels or services, centered on user interests and preferences. Relevant information collection, organization, processing vast quantities of string data, efficient

This paper focuses primarily on the thermal analysis of the steady, three-dimensional flow of CMC (sodium carboxymethyl cellulose) base fluid with Cu nanoparticles through the implantation plate of Riga in a porous Darcy–Forchheimer material with internal heat generation (absorption) effects. Thermophysical feature of CMC is taken into account with Al2O3 nanoparticle in it. Also, thermal radiation

Accurate prediction of multiphase flow rate is of prime importance in controlling production of oil fields. Direct measurements using multiphase meters are time-consuming and very costly. On the other hand, none of the published models can be considered as a universal model and most of these models are designated only for the critical flow. The aim of this study is to develop and validate practical

Earthquake disasters are inevitable, and in recent years, major earthquakes have caused great losses of life and property. To prevent such losses, structures must have sufficient earthquake resistance to preserve the lives of the occupants. Structural control can improve the shock resistance of structures, the actuator is the key issue of the control system. A new prototype of actuator, a neutral equilibrium

In this paper, the dynamic stall characteristics of the S809 airfoil have been numerically predicted, and the flow under dynamic stall condition has been controlled by introducing synthetic jet for enhancing the airfoil aerodynamic performance. In addition, experimental results have been adopted to validate the obtained numerical ones. The results show that the oscillation of the airfoil can delay

The influence of electrical discharge machining (EDM) on thermal barrier coating (TBC) in a two-step drilling of nickel-based superalloy has been studied. The TBC was coated on the superalloy using electron beam physical vapor deposition (EB-PVD). Simulation result shows that the temperature at TBC/metal interface increases with pulse-on time and peak current. The temperature will exceed the melting