Digital Commons Network^™

Study The Effect Of Plasma Fibrinogen And Selected Biomarkers In Iraqi Patients With Coronary Artery Disease, Zainab Saad Salih, Ahmed Saadi Hassan, Haider Hafudh Humaish

Al-Nisour Journal for Medical Sciences

Coronary artery disease (CAD is one of the major causes of morbidity and mortality in the world. Increased plasma (p) fibrinogen levels are closely related to myocardial ischemia and acute coronary events. This study aimed to evaluate changes in fibrinogen and other biochemical parameters in CAD patients with and without diabetes mellitus (DM). The total of 120 individuals aged 23–86 years were separated into three groups: 40 patients with CAD and DM (G1), 40 patients with CAD without DM (G2), and 40 apparently healthy subjects serving as controls (G3). Levels of plasma fibrinogen were analyzed in all samples using a …

Importance Of 8-Ohdg And Mda In Assessing The Oxidative Stress Capacity In Iraqi Brain Tumor Patients, Riyam Hussein Mohammed, Ali Abdul Hussein Mahdi, Maha Diekan Abbas

Al-Nisour Journal for Medical Sciences

Brain cancer is a significant health problem, with a notable change in the oxidative stress and antioxidant levels. Malondialdehyde (MDA) may change the structure of the cell membrane and later may lead to alterations in DNA at the cellular level. The 8-OHdG levels are increased in multiple cancer tissues and may be considered an indicator of the prognosis of most solid tumors. This study aimed to find out the possible relation between the MDA and 8-OHdG, along with exploring the role of blood sugar and HbA1c in the progression of brain tumors. This case- control study includes 60 brain tumor …

Characterization And Antimicrobial Susceptibility Of Pseudomonas Aeruginosa Isolates In Intensive Care Patients, Zahraa Dhaher Jabar, Faten Rashid Hameed, Raghad Hassan Hussein

Al-Nisour Journal for Medical Sciences

Background: Pseudomonas aeruginosa is recognized as major pathogen that associated with hospital acquired infections, especially in intensive care units. This study aimed to evaluate virulence traits and antibiotic resistance patterns of P. aeruginosa isolated from tracheal swabs of ICU patients.
Methodology: This study included 57 tracheal swabs obtained from the intensive care unit in Al-Diwaniyah Teaching Hospital from December 2025 to February 2026. Patients of both sexes, aged 5–78 years were included. Antibiotic susceptibility test, biofilm formation and motility tests were performed.
Results: After the final diagnosis, 15 samples were confirmed to P. aeruginosa. AST results reveled high resistance …

Circulating Caf22 As A Biomarker Of Sarcopenia And Its Association With Lipid Profile: A Case–Control Study In An Iraqi Population, Haneen Amer Awad, Walaa Esmael Jassim, Ahmed Abdul Hussein Mohsin

Al-Nisour Journal for Medical Sciences

Background: A progressive disorder associated with aging, marked by a reduction in skeletal muscle mass known Sarcopenia, strength, and physical performance. When combined with obesity, the condition referred to as sarcopenic obesity is associated with worse clinical and metabolic outcomes. Identifying reliable circulating biomarkers is essential for early detection and risk stratification.
Objective: This study aimed to evaluate the clinical utility of circulating C-terminal agrin fragment (CAF22) and its association with lipid profile parameters in patients with sarcopenia and sarcopenic obesity.
Methods: A case–control study was conducted in Baghdad, Iraq, including 118 participants (68 patients with sarcopenia and 50 healthy …

Assessment Of Serum Cytokeratin-18 And Aminotransferase Ratio As Indicators Of Progression Of Liver Fibrosis In Type 2 Diabetes Patients, Anfal Oudah Ali, Shatha Hamed Jwaid, Wajeeh Kachi Obead

Al-Nisour Journal for Medical Sciences

Non-alcoholic Fatty Liver Disease and Type 2 Diabetes mellitus are closely linked metabolic disorders related with worsening of liver injury and fibrosis. The current study aimed to asses' serum cytokeratin 18 and aminotransferase ratio as indicators of liver fibrosis progression in patients with T2DM and NAFLD. The study was conducted involving 180 participants aged range between (40–70) years old. The contributors were divided into four groups. Auto Chemistry Analyzer Cobas C311 was used to measure serum AST, ALT, ALP, FBS. Sandwich enzyme-linked immunosorbent assay was used to measure serum CK18 and insulin. AST/ALT ratio was calculated mathematically. A significant difference …

Methotrexate Adherence In Rheumatoid Arthritis Patients Using The Cqr-19 Scale And Its Relationship With Behavioral Factors At Marjan Teaching Hospital, Fatima Abbas Abed, Ali Hussein Al-Hafidh, Adnan Hussein Mahmoud

Al-Nisour Journal for Medical Sciences

Background: Methotrexate (MTX) and other disease-modifying antirheumatic medications are necessary for the long-term management of rheumatoid arthritis (RA), a chronic autoimmune illness. Nonetheless, a significant obstacle in the treatment of RA continues to be non-adherence to MTX. Comprehending the behavioral elements linked to adherence could potentially enhance therapy results.
Objective: To assess MTX adherence using the CQR-19 and examine its association with behavioral factors among RA patients at Marjan Teaching Hospital.
Methods: A cross-sectional study was conducted in the Rheumatology Unit of Marjan Teaching Hospital, Babylon, Iraq, from December 18, 2025, to April 18, 2026. A total of 220 RA …

Ai-Driven Arabic Linguistics For Autism Spectrum Disorder: A Systematic Review And Conceptual Framework, Jamal K. Abbas, Israa Abed Jawad, Qamar Ali Abdulridha, Haytham Falih Hassan, Dena Qusay Alrawi, Ula Kamal Abdulkadir, Amal Hassan J. Al-Bazzaz, Riyam Zaid Alameri

Al-Nisour Journal for Medical Sciences

ASD is a complicated neurodevelopmental condition where diagnosis and intervention still depend on subjective behavioral observation. These challenges, however, are greater in Arabic-speaking contexts with scant, standardized diagnostic tools, limited linguistic resources, and a broad application of AI solutions developed primarily for English language data. This paper implements a systematic review of a conceptual framework that uses computational linguistics, NLP, and AI to support ASD early screening and speech-language intervention within the Arabic-speaking population. Rather than reporting empirical findings, the paper synthesizes recent peer-reviewed literature to identify linguistically-anchored ASD-related markers suitable for computational analysis, encompassing echolalia, atypical pronoun usage, pragmatic …

Oxidative Stress And Recurrent Miscarriage: Exploring The Underlying Mechanisms, Hawraa Hazim, Alaa Al-Qaisi, Muataz Ali

Al-Nisour Journal for Medical Sciences

Despite a significant number of anatomical, genetic and chromosomal studies, the problem of recurrent miscarriage (RM) is still one of the challenges in reproductive medicine, as in almost 50% of the cases no clear cause is found. These are unexplained cases that are frequently called idiopathic RM and indicate that there might be an underlying molecular and biochemical mechanism that is not routinely checked during clinical practice. This review focuses on the key role of oxidative stress and redox imbalance in the pathogenesis of idiopathic RM. A special focus is placed on mitochondrial dysfunction, which results in increased electron leakage …

Evaluation Of Maternal Health Awareness And Its Influence On Child Vaccination Coverage In Rural Areas, Enass Razzaq Hamza

Al-Nisour Journal for Medical Sciences

Purpose: The objective of the study was to measure maternal health awareness and its effects on the coverage of child vaccination among rural Al-Mada’in district mothers in Iraq.

Design: A cross-sectional study with a community-based design was employed.

Subject: A total of 400 mothers aged 18 to 45 years with at least one child under five years of age participated in the study.

Setting: Rural areas of Al-Mada’in district, southeastern Baghdad, Iraq.

Measures: Structured interviewer-administered questionnaires were used to collect data on maternal awareness of nutrition, hygiene, antenatal care and immunization. Check Vaccinations cards of 392 children (98.0 percent) were …

A Cross-Sectional Study On Nutritional Knowledge And Its Association With Obesity Among Secondary School Students In Baghdad, Fatema Aouda Abbas

Al-Nisour Journal for Medical Sciences

Background: Obesity has become a developing social health issue among teenagers in Iraq especially in secondary school students.
Objective: The purpose of the study was to determine the level of overweight and obesity and to investigate the correlation between the knowledge of students about nutrition and their body mass index (BMI). Our hypothesis was that the lesser the nutritional knowledge, the more likely it was to be overweight or obese.
Methods: This study utilized a cross-sectional analytical survey study on 596 secondary school students with the ages of 1518 years in Baghdad, Iraq (response rate: 93.7%). A valid and reliable …

Assessment Of Nurses' Knowledge, Attitudes And Practice Toward Breast Self-Examination In Al-Najaf City Hospitals, Aseel Shalaan Kareem, Iman Qasim Kteo Al-Hussein, Zainab Neamat Jumaah

Al-Nisour Journal for Medical Sciences

One of the main causes of mortality for women worldwide is breast cancer. Therefore, it is essential to enhance awareness and information about breast cancer and breast cancer screening in order to diagnose the disease early. The study aimed to assess nurses' knowledge, attitude, and practice regarding breast self-examination before implementing nurse led educational program. A descriptive cross-sectional design was conduct among nurses works in hospitals, the data were collected by A systematic questionnaire including sociodemographic characteristics and three domains to assessing Knowledge, Attitudes and Practice related to BSE. Descriptive statistical analysis used to summarize the findings. The finding showed …

Formulation And Evaluation Of Transdermal Delivery Of Naproxen Gel, Ferial Majed Mahdi, Hiba Ezzat Hamed, Aws Saffar, Salah Hassan, Safa Hashim Waheb

Al-Nisour Journal for Medical Sciences

This study aimed to formulate and evaluate transdermal gels containing the nonsteroidal anti-inflammatory drug naproxen, using different polymers including Carbopol 934P, HPMC K4M and sodium CMC as gelling agents. Twelve formulations (F1 to F12) were prepared and subjected to physicochemical evaluation; FTIR results confirmed complete chemical compatibility between the drug and excipients and the pH of all samples (in the range of 5.80 to 6.55) was found to be favorable for skin safety. Increasing the polymer concentration increased the viscosity of the gels and directly controlled the drug release rate in in vitro tests. Formulation F4 (Carbopol 2.0%) was selected …

Multidrug Resistance And Antibiotic Susceptibility Of Pseudomonas Aeruginosa And Staphylococcus Aureus In Burn Wound Infections In Iraq, Sama Fakhri Ali, Muataz Mohammed Al-Taee

Al-Nisour Journal for Medical Sciences

Background: Burn wound infections are a significant cause of morbidity, extended hospital stays, and death, especially in resource-constrained environments. Multidrug-resistant (MDR) organism colonization and infection of burn patients are predisposed by the compromised skin barrier, immune dysregulation, and the frequent exposure to invasive procedures. The most frequently reported of these are Pseudomonas aeruginosa and Staphylococcus aureus, which have significant therapeutic implications.
Objective: The aim of this study was to thoroughly analyze the patterns of antibiotic susceptibility, identify the prevalence of multidrug resistance, and measure epidemiological risk using Multiple Antibiotic Resistance (MAR) index in P. aeruginosa and S. aureus isolates …

Comparison Of Ultrasound Versus Computed Tomography For The Detection Of Kidney Stones, Hind Moafak Abduljabbar

Al-Nisour Journal for Medical Sciences

Introduction: Renal stones continue to be a fairly frequent issue, impacting roughly 10% of the population at some time in their lives. It seems that during the past few decades, the occurrence of renal stones has grown; at least partially, this can be attributed to an increase in obesity levels and dietary changes.
Objective: Comparison between the computed tomography & ultrasound for the diagnosis and for evaluating the location & size of the kidney stones.
Patient and Methods: Included 75 patients with renal stones. The male and female patient's age range was (18–87 years). Patients have been referred for CT …

Postural Adaptations In Young Roller Skate Athletes: Effects Of Eight Weeks Of Proprioceptive And Strengthening Training On Static Balance, Widi Arti, Suprianto Suprianto, Hening Laswati Putra, Gadis Meinar Sari, Okky Zubairi Abdillah

Folia Medica Indonesiana

Static and dynamic balance are vital for performance and injury prevention in roller skate athletes. While proprioceptive and strengthening exercises are extensively used, evidence of their combined impact in young athletes is rare. This study evaluated the effects of an eight-week proprioceptive and strengthening program on postural and lower-limb balance parameters in roller skaters aged 11–15 years. The study randomly assigned 30 athletes to an intervention group (n=15) or a control group (n=15). The intervention group trained three times per week with structured exercises, while the control group continued routine skating and endurance activities. Balance outcomes were assessed using the …

Effect Of Kebar Leaf (Biophytum Petersianum) Extract On Lh Levels And Ovarian Follicle Development In A Pcos Rat Model, Aprilia Pratiwi Iriani Bahar, Sri Ratna Dwiningsih, Widjiati Widjiati, Sutrisno Sutrisno

Folia Medica Indonesiana

Polycystic Ovary Syndrome (PCOS) is a prevalent endocrine disorder affecting women of reproductive age, commonly characterized by elevated luteinizing hormone (LH) and decreased follicle-stimulating hormone (FSH) levels. These hormonal imbalances impair folliculogenesis and ovulation, often resulting in infertility. This study aimed to evaluate the effects of Biophytum petersianum (Kebar leaf) extract on LH levels and ovarian follicle development in a testosterone propionate-induced rat model of PCOS. A total of 30 adult female white rats (Rattus norvegicus) were randomly assigned to five groups: a negative control (K^–), a positive control with PCOS induction (K⁺), and …

Cracking The Code Of Resistance: Carbapenem-Resistant Urinary Tract Infections In Public And Private Hospitals, Shaista Bakhat, Fakhur Uddin, Muhammad Sohail, Shehla M. Baqai, Naresh Kumar, Saman Nadeem

Folia Medica Indonesiana

This research aimed to analogize the resistance patterns against carbapenem antibiotics in Enterobacterales uropathogens between two healthcare facilities. The authors performed this study at the Basic Medical Sciences Institute, Jinnah Postgraduate Medical Center, and the National Medical Center. A total of 374 UTI patients were enrolled, equally distributed in the two centers (187 each hospital). Molecular assays supplemented phenotypic susceptibility testing to detect carbapenem resistance. Statistical analysis, including multivariate logistic regression, was performed to identify associations between hospital type and carbapenem resistance. Of 374 urine samples, CA-UTIs were found in 86 (23.1%) and 90 (24%), while HA-UTIs occurred in 101 …

The Effect Of Self-Hypnosis On Self-Efficacy, Anxiety, And Depression In Mothers Of Children With Chronic Kidney Disease, Rohmaningtyas Hidayah Setyaningrum, Mohammad Fanani, I Gusti Bagus Indro Nugroho, Debree Septiawan, Siti Wahyuni, Damar Upahita

Folia Medica Indonesiana

More than half of caregivers of children with chronic kidney disease (CKD) report experiencing moderate depression (53.3%), while 30% and 16.7% report mild and severe depression, respectively. As primary caregivers, mothers require strong self-efficacy to manage psychological burden associated with caring for children with CKD. Self-hypnosis may enhance self-efficacy and alleviate anxiety and depression in this population. The aim of this study was to evaluate the effects of self-hypnosis in improving self-efficacy and reducing anxiety and depression in mothers of children with CKD. A randomized controlled trial was conducted at Dr. Moewardi Hospital, Surakarta, Indonesia. Thirty-two mothers were randomly assigned …

Burden And Determinants Of Diarrheal Disease Among Children Under Five In East Java, Indonesia: Findings From Ssgi 2024, Raudia Faridah Humaidy, Soraya Isfandiary Iskandar, Sophia Zahra, Sovia Salamah

Folia Medica Indonesiana

Diarrhea is one of the leading causes of morbidity among children under five in Indonesia and remains a major public health concern, particularly in the province East Java, which has the second-highest disease burden in the country. Unfortunately, evidence for provincial-level predictors of childhood diarrhea using recent national data is limited. This study aimed to estimate the burden of diarrhea among children under five and identify its associated factors to support targeted child health interventions. A cross-sectional analysis was conducted utilizing data from the 2024 Indonesian Nutrition Status Survey (SSGI). Data on children under five residing in East Java with …

Effectiveness Of Laser Acupuncture Therapy Compared With Nsaids On Pain Reduction And Quality Of Life In Patients With Knee Osteoarthritis: A Randomized Controlled Trial, Virgyawan Rizki, Teuku Nanta Aulia, Putri Ade Mueratana, Onarisa Ayu, Muhammad Yusuf

Folia Medica Indonesiana

Knee osteoarthritis (OA) is a major cause of chronic pain and disability, and although NSAIDs are widely used, prolonged therapy may increase the risk of adverse effects. Laser acupuncture has been proposed as a non-invasive option to reduce pain and improve knee-related outcomes. This randomized controlled trial compared laser acupuncture and NSAID therapy in 32 patients with knee OA (Kellgren–Lawrence grade II–III) who were randomized equally to laser acupuncture (n = 16) or NSAIDs (n = 16). The authors assessed pain using the Visual Analog Scale (VAS). Meanwhile, we evaluated knee function and knee-related quality of life using the Knee …

Glucose-Lowering Effects Of Epigallocatechin Gallate And Metformin In Diabetic Zebrafish Models: A Systematic Review And Meta-Analysis, Dinda Ayu Permatasari, Abdul Khairul Rizki Purba, Maftuchah Rochmanti, Rizky Alvian Adi Kurniawan, Shilvi Haliza Pratiwi

Folia Medica Indonesiana

Metformin is widely recognized as an effective glucose-lowering agent for type 2 diabetes mellitus, while epigallocatechin gallate (EGCG) has exhibited promising antidiabetic and antioxidant properties in experimental settings. This systematic review and meta-analysis aimed to assess the impact of EGCG and metformin on blood glucose concentrations in diabetic zebrafish models and to synthesize the related metabolic and mechanistic findings. The protocol was registered with PROSPERO (CRD420261461237) and the review was conducted in accordance with PRISMA 2020 guidelines. Comprehensive searches were performed in PubMed/MEDLINE, Scopus, Web of Science, and Embase for in vivo zebrafish studies published from January 2010 to August …

Addressing Data Scarcity In Malware Classification Via Pixel-Level Synthetic Image Generation, Mounika Krishna Teja Karumudi, Fabio Di Troia

Faculty Research, Scholarly, and Creative Activity

Deep learning-based malware classification using image representations has emerged as a highly effective paradigm for threat detection. However, training robust neural networks is frequently bottlenecked by data scarcity and severe class imbalances in real-world repositories. This study investigates the viability of using an autoregressive PixelCNN framework to synthesize high-fidelity, class-specific malware images to augment limited training distributions. Utilizing the benchmark Malimg dataset, we systematically evaluate a Convolutional Neural Network (CNN) classifier across varying ratios of synthetic-to-authentic data under strict data scarcity constraints (ranging from 10 to 80 authentic samples per family). Our experimental results reveal that while PixelCNN successfully replicates …

The Pivotal Role Of Artificial Intelligence In Optimizing Pharmaceutical Formulation And Delivery, Ali Khidher Abbas, Mustafa M. Noori, Ibtihal Abdulkadhim Dakhil, Mohammed Hussain Al-Mayahy

Al-Esraa University College Journal for Medical Sciences

Artificial intelligence (AI) has emerged as a transformative technological paradigm within the pharmaceutical sciences, offering innovative and forward-looking solutions to surmount the inherent limitations associated with conventional drug development, formulation design, and therapeutic delivery systems. Traditional pharmaceutical methodologies frequently entail protracted development timelines, extensive experimental procedures, and substantial financial expenditures, particularly within the domains of formulation optimization and drug delivery design. The integration of AI-driven technologies – encompassing machine learning (ML), deep learning (DL), artificial neural networks (ANNs), and predictive analytics – has considerably accelerated pharmaceutical research by refining decision-making processes, alleviating experimental burden, and enhancing formulation efficiency. The present …

The Pathological Interaction Between Diabetes And Hypertension: Mechanisms And Clinical Complications, Alaa Al-Noori, Ayad Ahmed Al-Taweel, Qater Alnada Jassim Mohammed, Tarik Muhammad Ali, Majeed Mihsin B. Al-Hamdani, Noor Thair Tahir

Al-Esraa University College Journal for Medical Sciences

Among the most prevalent chronic conditions, diabetes and hypertension frequently coexist in a single patient, aggravating vascular problems and hastening the deterioration of target organs, especially the kidneys. By raising intraglomerular pressure, impairing endothelial function, and triggering oxidative stress and inflammation, hypertension directly increases the chance of developing diabetes sequelae, including diabetic nephropathy. Chronic kidney disease advances more quickly when poorly managed hyperglycemia and hypertension combine to cause a decrease in glomerular filtration rate and an increase in urine albumin excretion. Other consequences like retinopathy, neuropathy, and cardiovascular disease are also encouraged by this pathological occurrence. Reducing the advancement of …

Clinical Significance Of Liver Enzyme Biomarkers In Chronic Statin Users, Muayad Khaleel Ibrahim, Saad Mahmoud Saeed

Al-Esraa University College Journal for Medical Sciences

It is possible that statins, by their dual capacity to modulate (both stimulate and suppress) immune responses, could play a role in influencing the course of autoimmune diseases. Consequently, our investigation was designed to explore how statins impact both the innate and adaptive branches of the immune system, as well as their effect on the crucial mechanism of self-tolerance. This was achieved through the comprehensive measurement of various antibody profiles, specifically including the detection and quantification of autoantibodies, such as antinuclear antibodies and Creatinine kinase, Aldolase, HMGCR antibody, Albumin and Bilirubin and Alanine transaminase, Aspartate aminotransferase, Our investigation employed a …

Some Pathogenic Agents Isolated From Gento-Urinary Tract Of Females Patients In Baghdad Area, I. M. Al-Saqur, A. N. Al-Thwani, E. M. Abdul Ameer, S. W. Abd-Al-Zhra, M. K. Sahan, H. S. Ferman, A. A. Hassan, H. M. Hassan

Al-Esraa University College Journal for Medical Sciences

The Urinary Tract Infection (UTI) represents a significant global health burden and the pathogens which inhibit the geneto - urinary Tract (GUT) of women cause devastating consume. In this study investigation UGT were carried out through examination of 186 women (183 married and 65 unmarried) who attended Damascus Private Medical Center-Baghdad, through the period from the beginning of January 2023 to the end of August 2023. Detection were conducted according to the standard methods after macroscopically and macroscopically examination of u samples. The results, indicated that 121 (65.05%) were infected and married women had high infection (78.86%) than the unmarried …

Measuring The Concentration Of Heavy Metals In The Serum Of Traffic Police And Their Impact On Heart Disease In The Future, Hanaa Khalil Sacheat

Al-Esraa University College Journal for Medical Sciences

The spread of heavy metals such as lead, cadmium and nickel is a clear danger that threatens the earth and disrupts the ecological balance. In this research, we evaluated the danger of these metals present in the areas of traffic points for traffic policemen who are present for long periods at traffic points. 25 blood samples were collected from traffic policemen present at traffic points, with information about age, date of joining the job, and smoking, The comparison was made with the same number of samples of people who were in a job inside buildings, The results showed a significant …

Experimental Analysis Of Diesel Engine Combustion Chamber Performance Using Field Measurements At The State Company For Heavy Engineering Equipment, Mohammed Kanaan Sedeeq

Al-Esraa University College Journal for Engineering Sciences

The current paper provides a detailed experiment and numerical study of the performance of the combustion chamber of a heavy-duty diesel engine in the common Iraqi industrial conditions at the State Company of Heavy Engineering Equipment (HEESCO). The main goal is to close the difference between what is specified by the manufacturers concerning the performance data, which is usually assumed to be under ideal conditions of the ISO standard, and the real efficiency of operation as witnessed in the field. The methodology is based on a hybrid approach that combines direct field measurements of in-cylinder pressure, temperature and fuel flow …

An Ai And Iot Framework For Dynamic Optimization And Sustainability In Smart Cities, Zeinab E. Ahmed, Rashid A. Saeed, Salah Hagahmoodi, Mamoon M. Saeed, Khalid Hamid, Sally D. Abugasim, Eyman F. A. Elsmany

Al-Esraa University College Journal for Engineering Sciences

Smart cities are emerging as a critical solution for creating more efficient, sustainable, and comfortable urban environments. This transformation is primarily driven by the synergistic integration of the Internet of Things (IoT) and Artificial Intelligence (AI). The IoT provides a pervasive network of connected sensors that collect real-time urban data, while AI serves as the analytical engine that processes this information to optimize city-wide systems. This paper presents a comprehensive framework that leverages this AI-IoT convergence for dynamic optimization to achieve long-term urban sustainability. The framework focuses on enabling intelligent, data-driven decision-making across core urban domains. The discussion and analysis …

Optimization Of Bearing Design In Centrifugal Pumps Using Finite Element And Experimental Methods: Application At South Refineries Company, Basra, Mohammed Hasab Naser Al-Mtasher

Al-Esraa University College Journal for Engineering Sciences

In the study, nonlinear vibration and thermo-mechanical characteristics of centrifugal pump bearings utilized in the cooling tower system of South Refineries Company (Basra) were properly examined using a combined experimental and numerical method. The intent of the study was to learn the impact of misalignment, the nature of the lubrication film, and thermal gradients on the stability of the operation of these bearings and their service life under realistic industry environment conditions. Finite element model (FEM) was constructed and tested on the basis of real field data obtained at the working pumps that allowed realistic distribution of stress and temperature. …