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Pm Irras Studies Of Organized Molecular Films At A Gold Electrode Surface, Zhang-Fei Su, Ai-Cheng Chen, Jacek Lipkowski

Journal of Electrochemistry

This feature article illustrates the potential of polarization modulation infrared reflection absorption spectroscopy (PM IRRAS) to provide molecular-level information about the structure, orientation and conformation of constituents of thin films at electrode surfaces. PM IRRAS relies on the surface selection rules stating that the p-polarized IR beam is enhanced, while the s-polarized beam is attenuated at the metal surface. The difference between p- and s-polarized beams eliminates the background of the solvent and provides IR spectra at a single electrode potential. In contrast, two other popular in situ IR spectroscopic techniques, namely, subtractively normalized interfacial Fourier transform infrared spectroscopy (SNIFTIRS) …

Redox-Active Monolayers On Ito Prepared By Post-Amidation And Direct Esterification And Their Spectroelectrochemical Characterization, Takamasa Sagara, Sae Nakai, Ryusuke Yofu, Shota Kojin

Journal of Electrochemistry

A redox-active monolayer on an optically transparent electrode constitutes a typical platform for spectroelectrochemical sensing. The necessity for its sophistication arises from the availability of multi-dimensional sensing signals. Simultaneous monitoring of the redox current and color change synchronized with the oxidation state change significantly enhances sensitivity and selectivity. This study aimed to elucidate the modification of an indium tin oxide (ITO) electrode with a viologen monolayer with an ordered orientation. Novel methods were developed to immobilize a viologen molecule bearing a carboxyl group to form assembled monolayers through a condensation reaction using 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide with N-hydroxy-succinimide (EDC/NHS). In the two methods …

A Promising Statistical Approach For Studying The Collisional Excitation Induced By Co: Application To The Cs-Co System, Amélie Godard Palluet, Richard Dawes, Ernesto Quintas-Sánchez, Adrian Batista-Planas, François Lique

Chemistry Faculty Research & Creative Works

The calculations of rate coefficients for the interpretation of molecular spectra are a recognized computationally expensive task. This is particularly true for media like comets, where the dominant species (CO, CO₂, and H₂O) have relatively high masses. Currently, no clear methodology exists to treat the collisional excitation of heavy species at low temperatures, thus limiting the number of collisional studies on such species. We present here a promising statistical approach to determine collisional rate coefficients of heavy systems as an alternative to fully quantum calculations when heavy projectiles such as CO are considered. This is illustrated …

Ambient Co2 Capture And Valorization Enabled By Tandem Electrolysis Using Solid-State Electrolyte Reactor, Yan-Bo Hua, Bao-Xin Ni, Kun Jiang

Journal of Electrochemistry

Electrocatalytic carbon dioxide reduction is a promising technology for addressing global energy and environmental crises. However, its practical application faces two critical challenges: the complex and energy-intensive process of separating mixed reduction products and the economic viability of the carbon sources (reactants) used. To tackle these challenges simultaneously, solid-state electrolyte (SSE) reactors are emerging as a promising solution. In this review, we focus on the feasibility of applying SSE for tandem electrochemical CO₂ capture and conversion. The configurations and fundamental principles of SSE reactors are first discussed, followed by an introduction to its applications in these two specific areas, …

The Early‐Phase Growth Of Ulfwaves In The Ion Foreshock Observed In A Hybrid‐Vlasov Simulation, Kun Zhang, Seth Dorfman, Lucile Ture, Urs Ganse, Chen Shi, Hongyang Zhou, Minna Palmroth

Publications

Large‐amplitude ultra‐low frequency (ULF) waves in Earth's ion foreshock play a crucial role in the dayside dynamics and solar wind‐magnetosphere coupling. This study uses global hybrid‐Vlasov simulation results from Vlasiator to investigate the detailed physical processes in the early growth phase of the foreshock ULF waves. Using both spatial and temporal information, the wave phase speed is determined and used to track a specific phase front as the wave evolves. The space‐time evolution of the foreshock waves and the backstreaming ions responsible for the wave growth is analyzed and presented in the wave frame for the first time. We employ …

Illuminating Two Secondary Schoolteachers’ Praxes On A ‘Terrain Of Freedom:’ Lessons For Teacher Education, Paul Tarc, Nicholas Ng-A-Fook, Tasha Ausman, Catherine James

Northwest Journal of Teacher Education

This paper attunes to the stated focus of this special issue—teacher subjectivities on a terrain of freedom—to consider the qualities, possibilities and limits of teachers’ praxes and development upon this ‘terrain.’ In response to the call, we explore three critical questions: 1) Where does the teacher’s freedom lie amidst required protocols and standardization?; 2) Can teachers transcend how they have been conceived and conditioned?; and 3) How can teachers engage in transformative development? Through a "poetics of teaching," inspired by Hansen (2004), we frame teaching as a curricular and pedagogical art form that melds interdisciplinary, intellectual, aesthetic, and …

Deciphering A Quantitative Relationship Between Rifting And Crustal Melt Fraction: Insights From The Incipient Okavango Rift Zone, Tuo Wang, Ling Chen, Stephen S. Gao, Kelly H. Liu

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

Rifting and magmatism are fundamental geological processes in the evolution of the lithosphere; however, quantitative investigations of their relationship are rare. The Okavango Rift Zone (ORZ) is in the early stages of rifting and magmatic activity and thus is an ideal locale to study this relationship. We examine the relationship using two primary crustal structure parameters: crustal thickness and average Vp/Vs ratio obtained from receiver functions. Our large Vp/Vs estimates indicate the existence of melts within the crust of the ORZ. Comparing our results with those of other continental rifts, we identify a quantitative relationship between rifting and crustal melt …

Human Monkeypox Pandemic In 2022, Rathinasamy Muthusami, Kandhasamy Saritha

Indian Journal of Health Sciences and Biomedical Research KLEU

No abstract provided.

Seroprevalence Of Severe Acute Respiratory Syndrome Coronavirus 2 Immunoglobulin G Antibodies Among Health-Care Workers Prior And After 4–6 Weeks Of Coronavirus Disease Vaccine Administration At Tertiary Care Center Of Southwest Bihar, India, Mukesh Kumar, Richa Singh, Abhishek Kamendu, Amit K. Singh, Jyoti Sangwan

Indian Journal of Health Sciences and Biomedical Research KLEU

AIM:

Coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is an ongoing global health emergency. To control the spread, a mass vaccination program is initiated. Antibody titer after vaccination can be a better marker to monitor immunological response.

MATERIALS AND METHODS:

The study was carried out at the Department of Microbiology, Narayan Medical College and Hospital, Jamuhar Sasaram, southwest Bihar, considering the sample size, type, and collection. First, antibody was tested before vaccination and second antibody value after 28 days of the first dose of COVID vaccine among the health-care workers and housekeeping staff.

RESULTS: …

A Prospective Study Of Etiology And Clinical Characteristics Of Children With Short Stature And Response To Treatment, Vijay Sheker Reddy Danda, Madhavi Verpula, Srinivas Rao Paidipally, Krishna Reddy Thaduri, Piyush Lodha, Sandeep Reddy Devireddy

Indian Journal of Health Sciences and Biomedical Research KLEU

OBJECTIVE:

To study the etiological and clinical profile of children presenting with short stature and to assess growth velocity in children after 6 months of treatment.

METHODS:

This prospective observational study was conducted between January 2017 to May 2018. One hundred consecutive children attending the outpatient department for short stature were thoroughly evaluated clinically and investigations were done as deemed necessary. The cases were followed up for 6 months to assess the growth velocity.

RESULTS:

Female to male ratio was 1.56. Nutritional short stature (NSS) and normal variant short stature were the most prevalent, with the equal frequency of 19% …

Global Research Trends Of Literature In Sugar-Sweetened Beverages 2000–2016, Waleed M. Sweileh, Ansam F. Sawalha, Samah W. Al-Jabi, Saed H. Zyoud, Adham S. Abutaha

Indian Journal of Health Sciences and Biomedical Research KLEU

BACKGROUND:

Sugar-sweetened beverages (SSBs) are commonly used. The objective of this study was to analyze the quantity and quality of published literature on SSBs and present the results in a bibliometric format.

METHODOLOGY:

Scopus database was used to retrieve documents from 2000 to 2015. Annual growth of publications, collaborations, geographic distribution, visualization and mapping of collaboration, author analysis, and top-cited articles will be presented and discussed.

RESULTS:

The total number of worldwide publications on SSBs was 3345, published in 27 subject areas. More than half (58.30%) of the SSB publications were within the area of medicine. The number of publications …

Two-Dimensional-Quantitative Structure-Activity Relationship Studies Of A Novel Series Of Diaryl Furanone Derivatives An Approach To Design Selective And Effective Cyclooxygenase-2 Inhibitors, Manjula K. Chikkamath, Pratibha M. Huded, Swetha S. Kokatnur, Akshata S. Menasinakai, Mahesh B. Palkar

Indian Journal of Health Sciences and Biomedical Research KLEU

INTRODUCTION:

Over a decade, a large number of selective cyclooxygenase-2 (COX-2) inhibitors with diverse chemical characteristics have been designed but only a few have emerged as drugs.

MATERIALS AND METHODS:

In the present study, two-dimensional-quantitative structure-activity relationship (2D-QSAR) studies were performed on a set of 43 novel derivatives of diaryl furanone using V-Life Molecular Design Suite (MDS 3.5) QSAR plus module using multiple linear regression (MLR) and Partial Least Square (PLS) regression methods against a COX-2 enzyme.

RESULTS AND DISCUSSION:

PLS method has displayed a very significant prediction results. QSAR model was generated by a training set of 33 molecules …

Formulation And Characterization Of Oxiconazole-Loaded Emulgel For Topical Application, A. P. Gadad, Amol Prakash Magdum, P. M. Dandagi, U. B. Bolmal, Shriraj Kamat

Indian Journal of Health Sciences and Biomedical Research KLEU

Background:

Oxiconazole nitrate is a new topical broad spectrum antifungal agent used to treat superficial fungal infections. It has a low aqueous solubility due to which different techniques are employed to enhance its bioavailability. Emulgel has emerged as one of the most interesting topical drug delivery system for hydrophobic drugs like Oxiconazole as it has dual release control systems i.e. emulsion and gel.

Objective:

In the present work an attempt was made to prepare Emulgel of Oxiconazole nitrate for enhancing its topical delivery.

Materials and Methods:

Emulgel formulations were characterized by various parameters like pH, viscosity, spreadability, extrudability,

in vitro …

Bibliometric Evaluation Of Published Indian Research On “Knowledge, Attitude, And Practices”, Sandeep Sachdeva, T. R. Sachdev, Ruchi Sachdeva

Indian Journal of Health Sciences and Biomedical Research KLEU

Objective:

Evaluation of knowledge, attitude, and practices (KAPs) based published Indian research on selected parameters.

Methodology:

A bibliometric analysis of Indian KAP research manuscript published in journals indexed in PubMed for the last 2 years and/or published in Indian Journal of Community Medicine (IJCM) and Indian Journal of Public Health (IJPH) for the last 15 years (year 2000–2014) was undertaken under certain criteria.

Results:

PubMed (

n

= 196) revealed maximum KAP research undertaken from the states of Karnataka (16.8%) followed by Delhi (9.6%), Maharashtra (9.1%), and more than two states (11.7%). There was poor reflection with no publication of …

Formulation And Evaluation Of Gastroretentive-Floating Multiparticulate System Of Lisinopril, Manasa Moganti, H. N. Shivakumar

Indian Journal of Health Sciences and Biomedical Research KLEU

Aim and Objective:

The main objective of this research was to formulate and evaluate gastroretentive-floating multiparticulate system of lisinopril to prolong the gastric residence time.

Materials and Methods:

Gastroretentive system of lisinopril was developed by ionotropic-gelation technique using isabgol (

Plantago ovata

F.) husk mucilage (IHM) as a floating agent, sodium alginate as a mucoadhesive polymer, and sodium bicarbonate as a gas-generating agent.

Results:

The beads were evaluated for entrapment efficiency (EE),

in vitro

drug release, and

ex vivo

mucoadhesion. The beads of batch F-2 exhibited high-EE (96.04 ± 0.74%), complete drug release (95.27 ± 0.12%), and good mucoadhesion (50% …

Need To Study Biostatistics In Medical Curriculum, Rajendra B. Nerli, Shridhar C. Ghagane

Indian Journal of Health Sciences and Biomedical Research KLEU

No abstract provided.

Bathtub Concept In Health Sciences A Comment, Nidhi Dwivedi, Sandeep Sachdeva, Anika Sulania

Indian Journal of Health Sciences and Biomedical Research KLEU

Bathtub shape has important connotations in public health and the concept could be reflected in two novel ways: (1) engineering (2) epidemiological model. Typical bath-tub curve is a combination of three failure rates, that is, decreasing, constant, and increasing failure rate, and different techniques are utilized to reduce these failures. This brief study highlights the concept of bath-tub, related theory, application, and how data modeling could be undertaken considering bath-tub failure rate.

Evidence-Based Medicine A Non-Starter In India?, Ravindra Bhaskar Ghooi, Shailesh Deshpande

Indian Journal of Health Sciences and Biomedical Research KLEU

Introduction:

All patients have a right to the best treatment for the ailment that they suffer from, and the best treatment usually would be evidence based medicine (EBM).

Practice of EBM:

This is formulated considering the physician's personal experience, that of the peers and the patients' expectations. In our country EBM is conspicuous in its absence due to poor maintenance of patients' records, poor access to journals and non-involvement of patients in therapeutic decisions. Physicians in private practice are generally not trained to evaluate external experience, whatever is available. Badly designed diagnostic approach and poor quality of information on which …

Developing Sky Plots Of Rocket Launches From Gps Scintillation Data, Ishaan Dey, Kshitija Deshpande

Beyond: Undergraduate Research Journal

Sky plots displaying GPS satellite and rocket launch trajectories are developed to determine the spatial correlation between satellites that display ionospheric scintillations and heavy thrust-producing rockets. The trajectories of three major Falcon Heavy and Artemis 1 rocket launches are used within this paper. Python code is utilized to compute and plot Ionospheric Pierce Point (IPP) coordinates which are then used to produce satellite trajectories from the receiver's point of view. Rocket latitude, longitude, and altitude data is integrated within the code to provide extensive detail into the location of the rocket in relation to GPS satellites that displayed scintillations from …

Dynamic Management Of Order Picking In Dark Stores And Urban Warehouses, Melih Celik, Arsham Atashi Khoei, Vaggelis Giannikas, Niccolo Corsini

International Material Handling Research Colloquium

No abstract provided.

Gradually Varied Flow In Horizontal Circular Open Channels, Sanaa M. Hashim, I.M.H. Rashwan, Hewida Omara

Journal of Engineering Research

In investigations of gradually varied flow, open channels are categorized according to bed slope as horizontal, mild, critical, steep, and adverse. A canal is referred to as horizontal if its bed slope is zero. In open-channel hydraulics, calculating the water surface profile in an open channel is regarded as a crucial part of channel design. The objective of this present study is to solve the gradually varied flow in open circular channel with horizontal slope by using two mathematical methods called; direct integration method and Runge-Kutta method. The presented study used the experimental works to offer an explicit closed-form semi-analytical …

A Yolo-Based Deep Learning Approach For Vibration-Based Rotating Shaft Imbalance Detection, Abdelhameed Zayed Dr., Ali Siam Dr.

Journal of Engineering Research

One of the prevailing causes of vibrations in machines is rotor imbalance. Rotor balancing can be used to fix the majority of rotating machinery issues. When it comes to high-speed running equipment, even a slight imbalance can lead to serious issues and decrease the operational efficiency of rotating machinery. This work proposed a deep learning approach for the detection of binary and multiclass imbalance in rotating shafts. A YOLOv11 model-based approach is developed to detect imbalance and identify unbalanced rotor positions. To precisely identify unbalanced positions, this method trains the YOLOv11 model using numerous sets of measured response data and …

A Critical Review Of Electrochemical Chloride Extraction: Mechanisms, Effectiveness, And Impact On Concrete Properties, Mariam Ghazy, Metwally Abd Elaty, Lara A. Farouk

Journal of Engineering Research

Chloride-induced corrosion poses a significant threat to the durability and service life of reinforced concrete structures, necessitating effective rehabilitation strategies. This research provides a comprehensive review of electrochemical chloride extraction (ECE) for reinforced concrete structures. It explores the mechanisms behind ECE and highlights the factors that influence the treatment's efficiency. Key elements discussed include ECE setup parameters (current density, treatment duration, anode/electrolyte type, temperature) and concrete mix properties (binder type, water-to-binder ratio, cover thickness, reinforcement details). The review also explores ECE's effects on concrete microstructure, including hydration products, porosity, alkali-aggregate reaction, and potential for hydrogen embrittlement, as well as its …

Cyclic Combustion Pressure Dynamics Of A Diesel Engine Operating On Waste Frying Oil Biodiesel Blends Using Wavelets, Shady Elmozy, Ahmed Khaira Dr., Elshenawy Elshenawy Prof. Dr., Ali Mohamed Dr., Medhat Elkelawy Prof. Dr,

Journal of Engineering Research

This paper investigates the cyclic combustion pressure dynamics of a single-cylinder diesel engine burning waste frying oil biodiesel blends, employing statistical analysis and continuous wavelet transform (CWT) to evaluate combustion stability. Experiments were conducted at a constant engine load (90%) and speed (1500 rpm), with in-cylinder pressure data collected over 400 consecutive cycles for conventional diesel (RD) and biodiesel blends (UB10, UB30, UB50). Results demonstrate that biodiesel blends marginally reduce average peak cylinder pressure (PP) by 0.3–3.8% while lowering PP variability, evidenced by declining coefficients of variation (COV-PP: 1.27–1.48%), attributed to biodiesel’s elevated viscosity promoting consistent fuel-air mixing. Conversely, mean …

Machine Learning-Based Prediction Of Load Capacity In Corrugated Concrete-Filled Double Skin Tubes Under Axial Load, Aya Mohsen Handousa Mansoura University, Fikry Salem, Nabil Mahmoud Mahmoud, Mohamed Ghannam

Journal of Engineering Research

Concrete-filled double-skin steel tubular (CFDST) columns have become widely utilized in building construction and bridges, thanks to their exceptional structural capabilities. This study investigates the axial compression behavior of corrugated CFDST columns, analyzing the impact of flat or corrugated external/internal plates and varying internal steel tube widths. Furthermore, basic regression analysis fails to precisely forecast the complicated relation between the column properties and their compressive strength. To overcome these challenges, this study suggests two machine learning (ML) models, including the Gaussian process (GPR) and the extreme gradient boosting model (XGBoost). To estimate their strength, these models employ a range of …

Multi-Modal Covid-19 Detection Using Cough Sounds And Medical Information With Attention-Enhanced Deep Learning, Mohamed Talaat Saidahmed, Reda Elbasiony, Marwa Reda Bastwesy, Asmaa Aly Hagar

Journal of Engineering Research

The COVID-19 pandemic has highlighted the need for fast, non-invasive, and cost-effective diagnostic tools. Cough sounds, as a prominent symptom of respiratory diseases, present a promising modality for automated COVID-19 detection. In this study, we propose a novel multi-modal deep learning framework for COVID-19 detection that leverages cough sounds and patient-specific medical information. Our approach extracts two types of acoustic features—Mel-Frequency Cepstral Coefficients (MFCCs) and Mel spectrograms—and integrates them with clinical metadata to improve diagnostic ac-curacy. The MFCC branch employs 1D convolutional layers followed by Efficient Channel Attention mechanism. The Mel spectrogram branch utilizes ResNet-50 combined with ECA to capture …

Mutual Coupling Impedance Effect On Ris-Assisted Terahertz Communication, Radwa A. Roshdy Dr., Hossam M. Kasem Prof., Mohammed A. Salem Dr.

Journal of Engineering Research

Terahertz (THz) communication based on reconfigurable intelligent surfaces (RIS) is a promising technology in future wireless networks, with the capabilities of ultra-high data rates and energy-efficient beam communicating. Nevertheless, the mutual coupling impedance of the closely spaced RIS reveals the inefficacy in existing channel estimation schemes, while it is usually ignored in the literature. In this paper, we fill this gap by developing an EM-compliant channel model that integrates mutual coupling explicitly for RIS-assisted THz systems. We evaluate the performance of mutual impedance-induced influence to the accuracy of the root mean square error (RMSE), which is considered as a pivotal …

A Hybrid Binary Grey Wolf Optimizer Based On De Algorithm For Feature Selection, Amany Saad Abdelrazek, Basma Ghareeb Elkilany, M. Arafa

Journal of Engineering Research

Feature selection is one kind of optimization problem that has bio-objective functions, where it is necessary to get the minimum number of features that achieve high classification accuracy. According to literature studies, several kinds of meta-heuristic algorithms have been utilized to solve feature selection problems. One of these meta-heuristic algorithms is the Grey Wolf Optimization (GWO) algorithm and its modified variants, including the binary versions. They have yielded competitive results compared to other algorithms. Despite the simplicity and effectiveness of GWO and its modified versions, they face challenges related to the exploitation ability of the local search. To avoid premature …

Performance Enhancement Of Ev Drive System Under Open-Phase Fault Using Reinforcement Learning With Mpc, Ahmed M. Hassan, Mohammed E. Metwally Dr.

Journal of Engineering Research

Improving the operation of electric vehicles (EVs) under fault is a very important subject because it increases their ability to operate in case of an emergency. This paper proposes a fault-tolerant control methodology for an EV drive system under open phase fault (OPF). The 5-ph interior permanent magnet synchronous motor (IPMSM) is employed in the drive system because it has several merits, such as high efficiency and reliability. The proposed technique is based on utilizing a reinforcement learning (RL) control algorithm, based twin-delayed deep deterministic policy gradient (TD3) algorithm, to operate the motor at maximum torque per ampere under OPF. …

An Eulerian-Pfem Approach To Model Transient Capillary Forces On Moving Contact Lines Of Spreading Liquid Drops: Applications In Hydraulic And Fluid Dynamics, Elaf N. Mahrous, Syed Yousufuddin, Muhammad Saleem Professor, Mohammed N. Iqbal, Muhammad T. Bin-Saleem

Journal of Engineering Research

This study addresses the complexities of simulating multiphase flows, particularly the dynamics of droplet behaviour on solid substrates, which are influenced by intricate capillary interactions. Despite advancements in fixed-grid and moving-grid methodologies, there remains a critical gap in accurately modelling transient phenomena and dissipative forces at the solid-liquid interface. We introduce a novel Eulerian-particle finite element method (PFEM) framework that captures the transient capillary forces associated with the movement of contact lines in liquid droplet spreading scenarios. Through a numerical assessment of three established dissipative force models—Jiang’s, Bracke’s, and Seeberg’s we identify Jiang's model as the most effective and stable …