Digital Commons Network^™

Blockchain-Based Nostrification: A Privacy-Preserving Framework For Documents Verification, Mohamad Badra, Rouba Borghol

All Works

Many employers and institutions will not complete a hire until they verify a candidate's foreign qualifications. This nostrification step exists for a simple reason: they need to know that certificates, medical records, financial papers, and other official documents are real and not forged. For years, signatures and stamps were enough. But the shift to online applications changed the game. Today, anyone can upload a polished PDF, and with basic editing tools, fake documents can be created in minutes. The old system no longer protects anyone. On the other hand, the blockchain offers a stronger and more practical solution. Instead of …

Cliffinsight: An Educational Web Application That Visualizes The Calculation Of Effect-Sizes Using Cliff's Delta, Mohamed El-Attar, Ahmed Shuhaiber, Rima Grati, Sarah Kohail

All Works

The purpose of calculating effect sizes in statistics is to quantify the practical significance of observed differences beyond mere statistical significance. While standardized mean difference measures such as Cohen’s d are widely used, they require normally distributed data, an assumption frequently violated in educational and social science research. Non-parametric alternatives such as Cliff’s delta (δ) are more robust under these conditions yet remain underused due to perceived computational complexity and limited accessible resources. Existing web-based tools for Cliff’s delta function primarily as numerical calculators and do not expose the underlying dominance structure that gives the statistic its meaning. This paper …

Facial Expression With Type Of Eye Opening Associates With Multi-Organ Failure: An Observational Prospective Icu Cohort Study, Talal Ibrahim Mostafa Hagag

Journal of Medicine in Scientific Research

Title Facial expression with the type of eye opening associates with multi-organ failure: an Observational prospective ICU cohort study Background Accurate prognostication in the intensive care unit (ICU) remains a challenging task. Conventional severity scores such as the Acute Physiology and Chronic Health Evaluation II (APACHE II) quantify physiological derangement but overlook real-time neurological and affective responsiveness. Behavioral indicators—particularly facial expressivity and eye-opening response—may reflect cortical and brainstem integrity, offering a simple, non-invasive adjunct for bedside mortality prediction. Methods In this single-center, prospective observational study, 210 adult patients in the ICU were assessed within 24 hours of admission. Two blinded …

Thyroid Function Abnormalities Among Reproductive-Aged Women With Menstrual Irregularities In A Tertiary Teaching Hospital, Ahmed Alsayed Kassab, Amira Yones Mohamed

Journal of Medicine in Scientific Research

Background and Objective:Menstrual irregularities are a common gynecological complaint, often linked to thyroid dysfunction, which disrupts the hypothalamic–pituitary–ovarian axis. This study sought to assess prevalence of thyroid dysfunction among reproductive-aged women with menstrual irregularities and to evaluate the specific clinical and hormonal correlations between different menstrual patterns and Thyroid Status. Methods:A cross-sectional study was conducted on 120 women presenting with menstrual irregularities. Participants were classified as Euthyroid, Subclinical Hypothyroid, Overt Hypothyroid, or Hyperthyroid. Descriptive statistics summarized baseline data (e.g., mean Age = 29.63 plus or minus 7.97 years). The association between Menstrual Irregularity Type and Thyroid Status was assessed using …

Auditory Memory In Children Who Stutter, Sanaa Mahran Mohamed Qandel, Nihal Hisham Abdelhamid Mostafa, Nihal Hisham Abdelhamid

Journal of Medicine in Scientific Research

Background Stuttering has been described as a disorder in motor speech in which disruption in the timing between laryngeal, respiratory, and vocal tract rhythm of speech. It is characterized by prolongations and involuntary repetitions of sounds. Children who stutter (CWS) characterized by inability to produce sounds, with intra-phonemic disruption and involuntary silent pauses. Many studies have examined central auditory processing skills and reported impairments, yet auditory memory skills have not been adequately evaluated, leaving a gap in the available information. Aim of the study Assessing auditory memory performance and auditory memory abilities in CWS. Methods: Measuring recognition memory, memory for …

A Comparison Of Haemodialysis And Renal Transplantation On Male Sexual Function And Hormonal Abnormalities, Hala Ibrahim Mohamed, Ahmad Mohamad Abbas Elseasi

Journal of Medicine in Scientific Research

Background Sexual dysfunction and hormonal imbalance are common in males with end-stage renal disease (ESRD), particularly among those on chronic hemodialysis. Kidney transplantation may restore endocrine homeostasis and improve sexual function. This study aimed to compare the effects of hemodialysis and renal transplantation on male sexual function and related hormonal profiles. Methods This cross-sectional study was conducted on 40 married men (≥18 years) with ESRD at National Institute of Urology and Nephrology from October 2024 to October 2025. Participants were divided into two groups: Group I (hemodialysis) and Group II (renal transplantation). Clinical evaluation, laboratory tests, and hormonal assays (Folliclestimulating …

Transcortical Approach For Central Neurocytoma: Efficacy, Safety, And Functional Outcome, Eslam Abozied Kandil

Journal of Medicine in Scientific Research

Background Central neurocytoma (CN) is a rare intraventricular neuronal tumor that predominantly affects young adults and is frequently associated with obstructive hydrocephalus. Surgical resection remains the cornerstone of treatment, yet the optimal surgical corridor and predictors of long-term outcome remain debated. Objective To evaluate the efficacy, safety, functional outcomes, and oncological control of transcortical microsurgical resection for central neurocytoma at a single neurosurgical center. Methods A retrospective review was conducted of all patients undergoing transcortical resection of central neurocytoma between 2017 and 2025. Clinical presentation, radiological characteristics, surgical approach, extent of resection, cerebrospinal fluid (CSF) diversion, postoperative complications, functional outcomes, …

Study Of Endocrine Complications In Children With Beta-Thalassemia Major. A Recent Insight, Randa Mohamed Darwish, Omnia Salah El-Din, Samar Mohamed Samir, Mona Ahmed Gabr

Journal of Medicine in Scientific Research

Background β-thalassemia major (BTM) is a severe form of transfusion-dependent hemolytic anemia associated with multiple complications, primarily due to iron overload. Endocrinopathies are among the most common long-term morbidities in this population. Objectives To evaluate the prevalence of endocrine complications including hypothyroidism, hypocalcemia, delayed puberty, impaired fasting blood glucose, and diabetes mellitus in children and adolescents with β-thalassemia major, and to assess their association with serum iron overload. Methods This cross-sectional study included 52 children and adolescents 11-18 years age with β-thalassemia major attending Ahmed Maher Teaching Hospital (2022–2024). Anthropometric measurements, Tanner staging, thyroid function tests, gonadal hormones, serum calcium, …

Evaluation Of Left Cardiac Chamber And Cardiac Size With Non Ecg Gated Ct In Cancer Patients And Its Role In Determining Cardiomyopathy, Manal Mohamed Refaat Beshir, Samia Yehia Heikal, Shaimaa Abdalaleem Abdalgeleel, Dalia Ibraheem El Saied, Sarah Mamdouh Osman

Journal of Medicine in Scientific Research

Background: A number of cardiovascular processes have been linked to cardiac chamber and cardiac size increase as a significant biomarker for predicting morbidity and death. There is no standardized technique for assessing and reporting cardiac chamber and cardiac size, despite the fact that non-electrocardiographically (ECG) gated multidetector CT is a frequently utilized cross-sectional imaging modality to assess numerous cardiothoracic diseases . Patients and Methods :Our study encompassed 106 patients. All patients were diagnosed with primary cancer and underwent computed tomography (CT) for either initial evaluation or subsequent monitoring. Cardiac measurements were obtained in CT and compared to Echocardiographic results done …

The Postoperative Analgesic Effect Of Lumbar Erector Spinae Plane Block Versus Pericapsular Nerve Group Block In Patients Undergoing Hip Surgeries, Islam M. El-Desoky, Mohamed Elshafey, Amal Ismail Abdelrahman

Journal of Medicine in Scientific Research

Background: Hip surgery requires effective pain control for proper recovery and decreasing the length of hospital stay. Aims: We aimed to assess the analgesic effect of Erector spinae plane block (ESPB) and pericapsular nerve group (PENG) blocks in pain control after hip operations. Methods: This randomized clinical trial included 69 ASA I–II patients scheduled for hip surgery were randomly allocated into three groups: PENG block, ESPB, and control groups (23 each). The primary outcome was postoperative pain assessed via the Numeric Rating Scale (NRS) at rest and during movement. Secondary outcomes included intraoperative and 48-hour morphine consumption, time to first …

Role Of New-Onset Qt Prolongation In Ecg In Critically Ill Septic Patients As A Prognostic Tool: An Observational Prospective Cohort Icu Study, Talal Ibrahim Mostafa Hagag, Salwa M.A. Dahesh

Journal of Medicine in Scientific Research

Background QT interval prolongation is a common finding among critically ill patients and could be a marker of autonomic nervous dysregulation, instability of metabolism, and/or septic cardiomyopathy. Nevertheless, its prognostic role among septic ICU populations remains unclarified. The current aim of this study was to explore its potential role regarding short-term mortality. Methods In this cohort study, 119 septic adults were included in the study within 24 hours of ICU admission. Demographics, clinical variables, lab values, and QTc intervals were measured within 2 hours of ICU admission following exclusion for clinically significant electrolyte imbalances and use of QT-prolonging medications. QTc …

Effect Of Lateral And Backward Walking Training On Balance In Children With Hemiparesis: A Comparative Randomized Controlled Trial, Seham M. Abd El-Moghny, Mohamed I. Elsepaee

Journal of Medicine in Scientific Research

Background: Hemiparesis, a common consequence of cerebral palsy (CP), significantly impairs motor function, leading to asymmetrical gait, poor balance, and reduced mobility in affected children. The resulting functional limitations can negatively impact a child's participation in daily activities, social interactions, and overall quality of life. Purpose: To investigate and compare the effectiveness of lateral and backward walking training with mirror visual feedback on standing balance in children with hemiparesis. Methods: Ninety children with hemiparesis, ages five to seven, of both sexes who met the following inclusion criteria were included in the study: They have spasticity at grades 1+ to 2 …

Efficacy And Safety Of General Anaesthesia Versus Local Anaesthesia With Iv Sedation In Transcatheter Aortic Valve Implantation (Tavi), Reham Salah, Ahmed Kamel Abdelghany Hassan, Sherif Ahmed Kamal Elhendawy

Journal of Medicine in Scientific Research

The optimal anesthetic approach for transcatheter aortic valve implantation (TAVI) remains a subject of ongoing debate. Although general anesthesia (GA) allows greater procedural control and airway security, local anesthesia with conscious sedation (LACS) may facilitate faster postoperative recovery and reduce procedure-related complications. This study aimed to compare the efficacy and safety of GA versus CS in patients undergoing transfemoral TAVI.

Comparison Between Central Corneal Thickness Measured By Anterior Segment Optical Coherence Tomography And Pentacam, Osama Ramadan Mahmoud, Rabab El Araby Lawash, Hanan Mohamed Abdel Hamid Ahmed

Journal of Medicine in Scientific Research

Background: Central corneal thickness (CCT) is crucial in ophthalmic practice helping diagnosis and management of various conditions such as glaucoma, keratoconus, corneal dystrophy, contact lens use and proceeding refractive procedures assessment. A lot of non-contact modalities are currently available for CCT evaluation including anterior segment optical coherence tomography (AS-OCT) and the Pentacam systems so we are in need of determining the degree of agreement between these instruments to establish an accurate clinical interpretation. Aim: To test correlation between corneal thickness measurements obtained using Pentacam and AS-OCT. Patients and Methods: Our comparative observational study included 50 eyes. CCT was measured in …

Incidental Extracardiac Findings In Cardaic Mr Imaging, Shaimaa S Mohamed, Elhardalo O Mohamed, Mohamed A Ali, Shimaa S Attia

Journal of Medicine in Scientific Research

Background: Cardiac magnetic resonance imaging (cMRI) is recently a pivotal noninvasive technique for comprehensive cardiac assessment, providing detailed cardiac anatomy and motility insights. Given its expansive field of view, cMRI facilitates the identification of incidental extracardiac findings (IEFs), that may have clinical significance beyond the primary cardiac evaluation.

Objective: This study aims to assess the prevalence of incidental extracardiac findings noted in cMRI and to address the most frequent detected lesions.

Methods: A retrospective study was conducted on patients who have done cMRI in the period between July 2021 and July 2023. The study cohort consisted of 219 individuals referred …

Heart-Type Fatty Acid Binding Protein In Early Diagnosis Of Acute Myocardial Infarction, Reem Safwat Mohamad, Asmaa Younis Elsary, Mohamed M. Elbably

Journal of Medicine in Scientific Research

Background: Timely identification of acute myocardial infarction (AMI) plays a vital role in ensuring prompt treatment and better clinical outcomes. Traditional cardiac indicators involving creatine kinase-myocardial band (CK-MB) and cardiac troponin I (cTnI) demonstrate reduced diagnostic accuracy through the initial hours after symptom presentation.

Aim: This research aimed to assess the diagnostic accuracy of heart-type fatty acid-binding protein (H-FABP) in comparison with cTnI, CK-MB, and lactate dehydrogenase (LDH) among cases presenting with acute chest pain, with particular focus on its role in early AMI detection.

Methods: A case-control investigation was conducted involving 60 AMI patients from the National Heart Institute …

Early Outcome Of Coronary Artery Bypass Grafting In 1,000 Egyptian Patients And Predictors Of Hospital Mortality, Ramdan Ibrahim Mohammed Ouf

Journal of Medicine in Scientific Research

Background Coronary artery bypass grafting (CABG) is a prevalent therapeutic intervention for the management of coronary artery disease. CABG significantly increases life expectancy. However, it is associated with peri-operative morbidity and mortality. Aim of the study to analyze the clinical and demographic attributes of patients undergoing isolated CABG and determine the early outcomes and the predictors of hospital mortality. Methods This is a retrospective observational study was conducted in National Heart Institute to describe the demographic and clinical characteristics of 1,000 Egyptian patients undergoing isolated CABG between January 2021 and January 2024. Results Our study included 1000 patients (mean age …

Evaluating The Accuracy Of Chatgpt In Decision Of Surgical Dose In Cases Of Intermittent Exotropia, Ayman M Elghonemy, Mohamed A Elkady, Mohamed R Abdelbasset

Journal of Medicine in Scientific Research

Background: Artificial intelligence (AI) has increasingly been integrated into various aspects of healthcare, revolutionizing diagnostics, patient management, and medical decision-making. AI-powered platforms, particularly large language models (LLMs) such as ChatGPT, have demonstrated potential in supporting clinical expertise by generating relevant, context-aware responses to medical inquiries. In ophthalmology, AI has been widely utilized for diagnosing and monitoring common conditions like glaucoma, diabetic retinopathy, and macular degeneration. However, its application in strabismus management, particularly in surgical planning, remains underexplored.

 Objective: to compare the accuracy of responses about surgical plans for strabismus by ChatGPT-3.5 and ChatGPT-4 with the traditional surgical strabismus table of …

Comparison Of Suture Materials In Pfannensteil Incision Closure, Ali Elsayed Khayal, Ahmed Alsayed Kassab

Journal of Medicine in Scientific Research

Background: Surgeons worldwide perform C-sections more often than almost any other procedure, a trend that shows a steady and ongoing increase. Despite its safety profile, postoperative wound complications remain a significant source of maternal morbidity, prolonged hospitalization, and increased healthcare costs. Optimal skin closure technique following Pfannenstiel incision remains controversial, particularly regarding the choice between absorbable braided and non-absorbable monofilament sutures.

Objective: To compare wound morbidity and surgical outcomes following Pfannenstiel skin closure using polyglactin 910 (Vicryl) versus polypropylene (Prolene) in women undergoing cesarean delivery.

Methods: This prospective randomized controlled trial included 200 women undergoing elective or emergency cesarean section …

Patient Pathways And Outcomes Following Referral To A Dedicated Clinic For Tavi Program: Insights From The Egyptian National Heart Institute, Ramy Mohamed Omar, Ahmad Hassanen Gaber, Tarek M Abdel Aziz Elkholy

Journal of Medicine in Scientific Research

Background

The most common valvular heart disease in elderly populations and with a dismal prognosis in the case of its development is degenerative aortic stenosis. The use of transcatheter aortic valve implantation (TAVI) has transformed the treatment of the entire surgical risk spectrum, but there is limited real-world data that define the patterns of treatment and post-treatment results in the Middle East and North Africa (MENA) region.

Objectives

To characterize the pattern of treatment allocation, clinical and procedural outcome, and predictors at the baselines of six months mortality in patients in a row who were referred to a specialist assessment …

Comparison Of Dexmedetomidine And Ketamine Versus Propofol And Ketamine For Procedural Sedation In Children Undergoing Minor Cardiac Procedures In Cardiac Catheterization Laboratory, Reham Salah, Amr Ahmed Samir

Journal of Medicine in Scientific Research

Background: The optimal anesthetic approach for the care of pediatric patients facing cardiac catheterization stays undefined. Therefore, this study sought to equivalence the impact of ketamine-propofol and ketamine-dexmedetomidine mixtures on recovery duration and hemodynamic parameters in pediatric patients suffering trivial procedures and cardiac catheterization, while sedated for the treatment of numerous congenital heart diseases.

Materials and Method: One hundred twenty-six pediatric patients, irrespective of sex, scheduled for cardiac catheterization were arbitrarily billed to one of two groups: a propofol-ketamine group (PK) and a dexmedetomidine-ketamine group (DK), every comprising sixty-three patients. Group (DK) established Dexmedetomidine iv infusion 1µg/kg over ten min …

Association Between Red Cell Distribution Width And Type 2 Diabetes Mellitus, Walaa Saad Mohammed Ibrahim

Journal of Medicine in Scientific Research

Background:

Type 2 diabetes mellitus (T2DM) is a chronic metabolic disease characterized by hyperglycemia and associated complications. Red cell distribution width (RDW), an index of the variability in red blood cell size, has emerged as a potential biomarker of inflammation and vascular risk.

Objective:

To assess the association between RDW and T2DM and its relation to glycemic control

Patients and Methods:

The current case-control study enrolled 40 T2DM patients and 20 age- and sex-matched healthy controls. Data collected included fasting blood sugar (FBS), 2-hour postprandial glucose (2hPP), HbA1c, lipid profile, albumin/creatinine ratio (ACR), and RDW. Statistical analysis included …

Role Of Complete Blood Cells Indices In Predicting Neonatal Sepsis Mortality, Sohaila Ali Abd El-Halim, Marwa Taha, Fifi Helmy Aboualy, Raghda Samir Abdellatif, Mai Mohammed Mostafa

Journal of Medicine in Scientific Research

Background: Neonatal sepsis remains a leading cause of morbidity and mortality in newborns. Identifying reliable prognostic markers is crucial for early diagnosis and treatment. Elevated levels of C-reactive protein (CRP) and increased platelet distribution width (PDW) have been associated with adverse outcomes in septic neonates. Objective: This study was performed in an attempt to assess the predictive value of Complete Blood Count (CBC) indices, including red cell distribution width (RDW), mean platelet volume (MPV), and PDW for mortality in septic neonates. Patients and Methods: This cohort study was conducted in the neonatal intensive care unit (NICU) of Mataria Teaching Hospital …

Identification Of The Seventh Cervical Vertebra By Palpation With Neck Rotation And Side Bending In Patients With Neck Pain., Eslam Elsayed Ali Shohda, Malaka Abdelmoniem Ibrahim El Khawaga, Amr Abdelaziz Hanafi Mohamed

Journal of Medicine in Scientific Research

Background: Precise localization of vertebral levels through clinical examination represents an essential competency for healthcare professionals across multiple disciplines. The present study sought to assess the reliability of identifying the seventh cervical vertebra (C7) via palpation during cervical rotation and side bending in individuals experiencing neck pain.

Materials and Methods: A cross-sectional study was carried out in the physiotherapy outpatient department of Al-Ahrar Teaching Hospital, located in Zagazig, Egypt. Thirty individuals with complaints of neck pain were recruited for participation. The seventh cervical vertebra (C7) was determined by palpating the most mobile vertebra among the three most prominent cervical segments …

The Role Of Evaluation Of Fetal Lung By Gray Scale & Doppler Us In Prediction Of Fetal Lung Maturity, Rana Elshennawy Nasr Ammar, Diaa Monir Ajlan, Mohammad Abdellatif Nassar, Shereef Lofty Elshwaikh

Journal of Medicine in Scientific Research

Background Neonatal respiratory distress syndrome (RDS) is a major cause of neonatal morbidity and mortality, especially in preterm infants. Traditional assessments of fetal lung maturity often require amniocentesis, an invasive procedure with significant risks. Noninvasive ultrasound-based methods could help optimize the timing of preterm delivery. Aim To determine whether the gray-scale echogenicity of the fetal lung and Doppler indices of the fetal main pulmonary artery (MPA) can predict fetal lung maturity and the risk of neonatal RDS in late preterm pregnancies. Patients & Methods A prospective cohort study was performed in the Obstetrics and Gynecology Department of Tanta University Hospitals …

Data And Analysis Code For Agricultural Risk Perceptions And Willingness To Change Farming Practices In The Rio Grande Valley Of Texas, Owen Temby, Dongkyu Kim, Anthony R. Lima

Datasets

This dataset supports research on farmers’ perceptions of agricultural risk and their stated willingness to use water-management and conservation practices in the Rio Grande Valley of South Texas. Data were collected in 2024–2025 from farm owners in Cameron, Hidalgo, Starr, and Willacy counties. Mailed invitations directed recipients to a Qualtrics questionnaire, followed by telephone outreach through the UTRGV Center for Survey Research and Policy Analysis. Participants could respond online or answer the questionnaire orally during a telephone interview. The released dataset contains 93 records with recorded consent, including partial responses; 72 records support the core regression analyses. Survey measures cover …

Partisan Local Media And Corporate Voluntary Disclosures: Evidence From Sinclair Acquisitions, Ming Li

Theses and Dissertations

I investigate the impact of local media’s political orientation on firms’ voluntary disclosure, exploiting the acquisitions of local TV stations by Sinclair Broadcast Group, a conservative media conglomerate. Drawing on the media bias theory and implementing a staggered difference‐in‐differences design, I find that the local partisan media affects management earnings forecasts. Specifically, Conservative-leaning CEOs in designated market areas (DMAs) affected by Sinclair’s acquisitions forecast more optimistically, increasing forecast frequency and inflating forecasted earnings. The impact is stronger if the DMAs are more Liberal-leaning before the acquisitions and when firms have weaker corporate governance. I also find that the stock market …

Meeting The Occupational Needs Of Older Adults With Long-Term Conditions: An Exploration Of Occupational Therapy In Primary Care, Sam Wakley

School of Health Professions Theses

This thesis investigated the occupational needs of older adults with long-term conditions to determine how these needs could be met through primary care, acknowledging this as a contemporary area of occupational therapy practice. Combining three studies offered a comprehensive, occupationally centred analysis of a growing area of practice that remains underexplored. Strand One involved conducting a scoping review to map existing models of primary care for adults with long-term conditions. It demonstrated that current approaches largely neglect occupation, favouring biomedical outcomes and fiscally related priorities. However, growing awareness to quality of life and the role of an integrated multidisciplinary team …

Geometric Effects Of Warfighters On Body Armor Fit And Protective Capabilities Against Shock Wave Energy, Melissa Lynn Sutter

Doctoral Dissertations

Body armor is a vital piece of protective equipment for warfighters to defend against threats, necessitating continued development to improve comfort, weight, and protection. However, female warfighters often wear unisex body armor, designed primarily for the male torso. Current research has evaluated the short- and long-term detriments of female warfighters wearing these armors, focusing on comfort and performance. However, these studies do not comprehensively consider how a non-form-fitting armor compromises warfighter safety from battlefield threats. This research examines the geometric effects of female warfighters on armor protection level when defending against shock threats by evaluating the energy distribution on a …

Temperature-Dependent Dielectric Function Of Solids From Coupled Oscillators With Radiation Reaction: Application To Atom–Surface Interactions, Tuhin Kanti Das

Doctoral Dissertations

In this dissertation, we propose a uniform functional form of the dielectric function of solids that is applicable over a wide range of frequencies. We apply our model to describe the dielectric function of two technologically important materials: silicon and calcium fluoride. The temperature dependence of their dielectric functions is also described using simple analytic forms. We found that a generalized Sellmeier-type model with complex denominators (“damped oscillators”) does not lead to a satisfactory fit of experimental data for the dielectric function. In contrast, our model, which is analytically only slightly more involved (“complex oscillator strengths”, complex numerators), allows us …