Ghaleb Ibrahim, G.A. Vinnicombe,
The equations to describe the behaviour of a cooled falling film absorber with laminar flow in the absorbent stream are presented and solved numerically by using a novel hybrid method of solution which combines an analytical solution with the finite difference method. Theoretical performance data were obtained in terms of absorber effectiveness, number of transfer units and coolant capacity ratio. These data showed that, for given entry conditions, absorber performance can be improved by increasing ...
Tópico(s): Fluid Dynamics and Vibration Analysis
1993 - Elsevier BV | International Journal of Heat and Mass Transfer
Ghaleb Ibrahim, M.B.W. Nabhan, Mohammed Zohdi Anabtawi,
A model for a falling film type cooling tower has been developed to investigate the effect of tower parameters as well as the effect of liquid-side thermal resistance on the tower performance. The energy equation is used to determine the temperature distribution across the liquid film. The heat and mass transfer processes between the liquid film and air bulk are described using three ordinary differential equations. The energy equation was solved using a finite difference Crank-Nicolson scheme. ...
Tópico(s): Heat Transfer and Boiling Studies
1995 - Elsevier BV | International Journal of Refrigeration
Tópico(s): Heat Transfer and Optimization
2001 - Elsevier BV | International Journal of Refrigeration
Abstract A theoretical model is developed and solved to investigate the instability of a refrigeration system with an evaporator controlled by a thermostatic expansion valve. An evaporator time constant is used to account for the delay of the liquid refrigerant distribution along the two phase region. Results show that there is an evaporator critical time constant, below which the system operates in a stable manner. This critical time constant is found to decrease with decreasing the partial load ...
Tópico(s): Heat Transfer and Optimization
1998 - Wiley | The Canadian Journal of Chemical Engineering
M.B.W. Nabhan, Ghaleb Ibrahim, Mohammed Zohdi Anabtawi,
A procedure for solving the Navier-Stokes equations for the steady, one-dimensional flow of a binary water-based lubricant within an infinite breadth hydrodynamic journal bearing is described. The method uses the Newton-Raphson iterative technique to obtain the interface layer in the flooded clearance along the bearing. The implementation of the Simpson rule of integration technique into the equation set allows pressures, drags and the load carrying capacities to be predicted for a range of viscosity ...
Tópico(s): Hydraulic and Pneumatic Systems
1997 - Elsevier BV | Wear
M.A. Tahat, Ghaleb Ibrahim, S.D. Probert,
An evaporator's time-constant (tc) equation has been developed as part of a mathematical model describing the time-dependent behaviour of a refrigeration system. The magnitudes of the evaporator's tc were approximately 2 and 5 s, respectively for 100 and 50% loads imposed on the refrigerator. As a result of a step change in the inlet's water-temperature, the magnitudes of both tc and the two-phase heat-transfer coefficient (ftp) for the refrigerant system were altered. Although a step decrease in ...
Tópico(s): Heat Transfer and Optimization
2001 - Elsevier BV | Applied Energy
Ahmad Hussaini Jagaba, Shamsul Rahman Mohamed Kutty, Mohamed Hasnain Isa, Aiban Abdulhakim Saeed Ghaleb, Ibrahim Mohammed Lawal, Abdullahi Kilaco Usman, Abdullahi Haruna Birniwa, Azmatullah Noor, Sule Abubakar, Ibrahim Umaru, Anwar Ameen Hezam Saeed, Haruna Kolawole Afolabi, Usman Bala Soja,
Abstract The presence of xenobiotic compounds in biological wastewater treatment processes with activated sludge may reduce microbial communities, disrupt microbial diversity, and diminish system performance. Shock loads and unusual operating events in these biological systems have negative impacts on their efficiency and reliability for pollutant degradation, thereby posing high risk to microorganisms and water quality of receiving treated water bodies. The severity and characteristics of the occurring ...
Tópico(s): Membrane Separation Technologies
2022 - Wiley | ChemBioEng Reviews
Ahmad Hussaini Jagaba, S. R. M. Kutty, Gasim Hayder, Lavania Baloo, S. Abubakar, Aiban Abdulhakim Saeed Ghaleb, Ibrahim Mohammed Lawal, Azmatullah Noor, Isaac John Umaru, Najib Mohammed Yahya Almahbashi,
The Nigeria Centre for Disease Control recently reported an outbreak of yellow fever in Bauchi state. To strategize mitigation measures, an investigation into water sources became necessary. This study adopted Water Quality Index (WQI), Target Hazard Quotient (THQ) and Hazard Index (HI) approaches to evaluate water quality from hand-dug wells within Rafin Zurfi area, Bauchi State. The specific objectives were; sample characterization, statistical analysis by SPSS, and determination of health risk analysis ...
Tópico(s): Geochemistry and Geologic Mapping
2020 - Elsevier BV | Ain Shams Engineering Journal
Ahmad Hussaini Jagaba, S. R. M. Kutty, Gasim Hayder, Lavania Baloo, Aiban Abdulhakim Saeed Ghaleb, Ibrahim Mohammed Lawal, S. Abubakar, Baker Nasser Saleh Al-dhawi, Najib Mohammed Yahya Almahbashi, Isaac John Umaru,
Coagulation-flocculation constitute the backbone process in most water and wastewater treatment plants. This study focused on determining the optimum coagulant dose for moringa oleifera seed extract, zeolite, ferric chloride, chitosan and aluminium sulphate coagulants through the coagulation, flocculation and sedimentation process. It also ascertain which coagulant has the potential for higher removal of Cd, Cu, Fe, Mn, Pb and Zn. The test was conducted with initial pH, settling time, coagulant ...
Tópico(s): Minerals Flotation and Separation Techniques
2020 - Elsevier BV | Ain Shams Engineering Journal
Hikmat Abdel‐Razeq, Asem Mansour, Salwa Saadeh, Mahmoud Abunasser, Mohammad Ma’koseh, Murad Salam, Alaa Abufara, Yousef Ismael, Alaa Ibrahim, Ghaleb Khirfan, Mohammad Ibrahim,
Venous thromboembolism (VTE) is a commonly encountered problem in patients with cancer. In recent years, cancer treatment paradigm has shifted with most therapy offered in ambulatory outpatient settings. Excess of half VTEs in patients with cancer occur in outpatient settings without prior hospitalization, where current practice guidelines do not recommend routine prophylaxis. Risk assessment models (RAMs) for VTE in such patients were recently introduced. This study aims to assess the practical application ...
Tópico(s): Diagnosis and Treatment of Venous Diseases
2017 - SAGE Publishing | Clinical and Applied Thrombosis/Hemostasis
Abdel-Ellah Al-Shudifat, Amjad Al‐Shdaifat, Ahmad Ali Al-Abdouh, Mohammad Ibrahim Aburoman, Sara Mohammad Hussein Otoum, Amro Ghaleb Sweedan, Ibrahim Khrais, Ibrahim Hisham Abdel-Hafez, Asgeir Johannessen,
. The Middle East is the home to the most obese population in the world, and type 2 diabetes mellitus is endemic in the region. However, little is known about risk factors for diabetes in the younger age groups.
Tópico(s): Diabetes Management and Education
2017 - Hindawi Publishing Corporation | Journal of Diabetes Research
Hesham A. Saafan, Kamilia M. Ibrahim, Yasmeena Thabet, Sara M. Elbeltagy, Rana A. Eissa, Ashraf H. Ghaleb, Fathy Ibrahim, Mahmoud Elsabahy, Noura G. Eissa,
Pulmonary administration provides a useful alternative to oral and invasive routes of administration while enhancing and prolonging the accumulation of drugs into the lungs and reducing systemic drug exposure. In this study, chloroquine, as a model drug, was loaded into niosomes for potential pulmonary administration either via dry powder inhalation or intratracheally. Chloroquine-loaded niosomes have been prepared and extensively characterized. Furthermore, drug-loaded niosomes were lyophilized ...
Tópico(s): Drug-Induced Adverse Reactions
2021 - Multidisciplinary Digital Publishing Institute | Pharmaceutics
Mohammed Zohdi Anabtawi, Ghaleb Ibrahim,
The effects of gas velocity, liquid velocity and nozzle diameter on the gas holdup and the volumetric liquid phase mass transfer coefficient, kLa, were studied a experimentally in a spout-fluid bed by absorption of oxygen in air into tap water. Gas holdup was found to increase with increasing gas velocity and to decrease with increasing liquid velocity and not to depend on nozzle diameter. kLa was found to increase with increasing gas velocity and liquid velocity and to decrease with increasing ...
Tópico(s): Granular flow and fluidized beds
1996 - Society of Chemical Engineers, Japan | JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
Marat Fudim, W. Schuyler Jones, Richard L. Boortz-Marx, Arun Ganesh, Cynthia L. Green, Adrian F. Hernandez, Manesh R. Patel,
... 9:24, Online publication date: 15-Dec-2020. Ibrahim A, Ghaleb R, Mansour H, Hanafy A, Mahmoud N, Abdelfatah Elsharef M, Kamal Salama M, Elsaughier S, Abdel-Wahid L, Embarek Mohamed M, Ibrahim A and Abdel-Galeel A (2020) Safety and ...
Tópico(s): Cardiac pacing and defibrillation studies
2018 - Lippincott Williams & Wilkins | Circulation
Ghaleb A. Husseini, Refaat Ibrahim El-Fayoumi, Kim L. O’Neill, Natalya Rapoport, William G. Pitt,
Tópico(s): Effects of Radiation Exposure
2000 - Elsevier BV | Cancer Letters
Ahmad Hussaini Jagaba, S. R. M. Kutty, Gasim Hayder, A. A. A. Latiff, Nur Adila Ab Aziz, Isaac John Umaru, Aiban Abdulhakim Saeed Ghaleb, S. Abubakar, Ibrahim Mohammed Lawal, Mohammed Abdu Nasara,
This article aimed at determining the optimum coagulant dose for various coagulants. This is to ascertain coagulant with the potential for higher removal of contaminants. By fixing the initial pH, settling time, coagulant aid dose, rapid mixing speed & time, slow mixing speed & time as constant parameters, the study assessed the process efficiency in terms of percentage removals for TSS, oil & grease, COD, NH3-N, turbidity and colour. The results indicated that the optimum dosage for FeCl3, moringa oleifera, ...
Tópico(s): Minerals Flotation and Separation Techniques
2020 - Elsevier BV | Ain Shams Engineering Journal
Rasha M. Ghaleb, Gihan Omar, Mohamed Ibrahim,
Avascular necrosis (AVN) is a major cause of morbidity in SLE. Several factors have been associated with the development of osteonecrosis in SLE but corticosteroid therapy has been the most consistent. Many factors such as thromboembolism, fat embolism, thrombophilia, hypofibrinolysis, intramedullary haemorrhage, vasculitis and increased bone marrow pressure are related to corticosteroid-induced osteonecrosis. To determine the prevalence of avascular necrosis (AVN) of bone in patients with systemic ...
Tópico(s): Systemic Lupus Erythematosus Research
2011 - Elsevier BV | The Egyptian Rheumatologist
Mohammed T. Nuseir, Ghaleb A. El Refae, Ahmad Ibrahim Aljumah, Muhammad Turki Alshurideh, Sarah Urabi, Barween Al Kurdi,
The aim of this study is to explore the contemporary digital marketing strategies and tools and the role played by these in various marketing activities or areas. The study also explores the market segmentation in the digital era to improve customer experience tools. In addition, the study determines which strategy has been suggested to be most optimized for enhancing Customer Experience. The research method comprises a Systematic Literature Review (SLR), which included choosing the key publications, ...
Tópico(s): Organizational and Employee Performance
2023 - Springer Nature | Studies in computational intelligence
Mohammed T. Nuseir, Ghaleb A. El Refae, Ahmad Ibrahim Aljumah,
The COVID-19 has caused a state of emergency not only in the UAE but also around the globe. Following the preventive measures, the government of UAE has closed temporarily all types of educational institutes, replacing them by other institutes, thus shifting to e-learning. Therefore, this study aims at examining the role of information and communication technology, e-service quality, and e-information quality towards the brand image of universities by concentrating on students' e-learning. More ...
Tópico(s): Cyberloafing and Workplace Behavior
2021 - Springer International Publishing | Studies in systems, decision and control
Ayman Ibrahim, Ramadan Ghaleb, Hossam Mansour, Amr Hanafy, Naggeh M. Mahmoud, M Abdelfatah Elsharef, Mohamed Kamal Salama, Saud M. Elsaughier, Lobna Abdel-Wahid, Mona Embarek Mohamed, Ahmed K. Ibrahim, Ahmed Abdel-Galeel,
Background: Heart failure is the most common cause of hospitalization in elderly patients. It is likely that many of the mechanisms that contribute to reductions in systolic and diastolic function, seen in diabetic patients, place them at an increased risk of heart failure. Diuretic therapy, especially loop diuretics, is the usual way of managing congestion, particularly in volume-overloaded patients. Little is known about the beneficial effect of dapagliflozin when added to loop diuretics in managing ...
Tópico(s): Diabetes Management and Research
2020 - Frontiers Media | Frontiers in Cardiovascular Medicine
Usama Mohamed El- Barrany, Sherin Salah Ghaleb, Samah F. Ibrahim, Mohamed Nouri, Ali Hassan Mohammed,
Sex determination is important in establishing the identity of an individual. The foramen magnum is an important landmark of the skull base. The present research aimed to study the value of foramen magnum measurements to determine sex using computed tomography (CT) among Sudanese individuals. Foramen magnum CT scans of 400 Sudanese individuals (200 males and 200 females) aged 18 - 83 years were included in this study. Foramen magnum (length and width), right occipital condyle (length and width), left ...
Tópico(s): Osteomyelitis and Bone Disorders Research
2016 - Naif University Publishing House | Arab Journal of Forensic Sciences and Forensic Medicine
Gamil Ghaleb Alrubaiee, Anisah Baharom, Ibrahim Faisal, Hayati Kadir Shahar, Shaffe Mohd Daud, Huda Basaleem,
Abstract Background Previous cross-sectional studies have reported limited knowledge and practices among nurses regarding controlling nosocomial infections (NIs). Even though health institutions offer many irregular in-service training courses to solve such issues, a three year-nursing educational programme at institutions is not adequate to enable nurses to handle NIs. Therefore, this study aims to evaluate the implementation of an educational module on NIs control measures among Yemeni nurses. ...
Tópico(s): Emergency and Acute Care Studies
2021 - BioMed Central | BMC Nursing
Hosam F. El-Sofany, Samir Abou El-Seoud, Fayed F. M. Ghaleb, Shaima Ibrahim, Noor Al-Jaidah,
The assessment process in an educational system is an important and essential part of its success to assure the correct way of knowledge transmission and to ensure that students are working correctly and succeed to acquire the needed knowledge. This paper describes the analysis, design, and implementation of the Questions-Bank system, that allows the students of primary, preparatory, and secondary schools to take web-based quizzes and exams, to download course reviews, and previous exams. "Questions- ...
Tópico(s): Service-Oriented Architecture and Web Services
2009 - kassel university press | International Journal of Emerging Technologies in Learning (iJET)
Mohammed Zohdi Anabtawi, Ghaleb Ibrahim, Mohammed Bassam Wafa Nabhan,
Abstract An experimental investigation was carried out to determine the effect of gas velocity, liquid velocity, and column diameter on the gas holdup and axial dispersion coefficients in cocurrent spout-fluid beds in three columns with diameters of 74, 114, and 144 mm, all with a height of 1.20 m, at superficial gas and liquid velocities of 0.001–0.186 m·s−1 and 0.002–0.06 m·s−1, respectively. The axially dispersed plug flow model equation was solved by using the finite difference technique and ...
Tópico(s): Granular flow and fluidized beds
1996 - Taylor & Francis | Separation Science and Technology
Mohammad Alshahrani, Ghaleb Elyamany, Qanita Sedick, Walid Ibrahim, Amal Farah Mohamed, Mohamed O. Othman, Nour Al Thibani, Omar Alsuhaibani, Mohamed Al amro, Ali Gharawi, Omar Sharif, Yasser Elborai, Fahad Alabbas, Amal Binhassan, May AlMoshary, Eman Al Mussaed, Nawaf Alkhayat,
In January 2020, the WHO declared the novel coronavirus (2019-nCoV) outbreak as a public health emergency of international concern. Due to the rapid spread of 2019-nCoV, all countries started preventive and precautionary measures to prevent COVID-19 infection spread. These measures limited the population mobility and services provided, which subsequently Impact of on children with cancer and cancer care delivery in the many health centers in Saudi Arabia. We did a cross-sectional study to assess ...
Tópico(s): COVID-19 and Mental Health
2020 - SAGE Publishing | Health Services Insights
Mohammed T. Nuseir, Ahmad Ibrahim Aljumah, Ghaleb A. El Refae,
The objective of this study is to determine the relationship of digital marketing as a wide emerging marketing tool, in developing public relation values for modern business in the globalized competitive era of mature markets. For this study, the cross-sectional data were collected by 450 respondents including the people as customers, and the managerial staff of the different well-reputed organizations in the United Arab Emirates (UAE). The findings of this study highlight that there is a clear and ...
Tópico(s): Belt and Road Initiative
2022 - Growing Science | International Journal of Data and Network Science
Rabiha Seboussi, Bernard Faye, Ghaleb Alhadrami, Mustafa Askar, Wissam H. Ibrahim, Baaha Mahjoub, Khalil Hassan, T. H. Moustafa, Ahmed Elkhouly,
Tópico(s): Trace Elements in Health
2009 - Springer Science+Business Media | Biological Trace Element Research
Kamel Adwan, Alaa Jayousi, Sameh Abuseir, Ibrahim Abbasi, Ghaleb Adwan, Naser Jarrar,
Tópico(s): Parasitic Infections and Diagnostics
2018 - Springer Science+Business Media | Acta Parasitologica
Ghaleb Adwan, Nael Abu Hasan, Ibrahim Sabra, Dalia Sabra, Shorouq Al-butmah, Shorouq Odeh, Zeinab Abd Albake, Haneen Badran,
Surgical site infections considered as a major problem in health care centers, resulting in extended length of stay, substantial associated morbidity and mortality, and high excess hospital cost. Thirty wound swabs were collected from patients who had developed postoperative wound infections at Rafidia Hospital-Nablus, Palestine. Bacterial isolates were identified according to standard microbiological methods. Antibiotics susceptibility test was applied for all isolated bacterial species. ERIC-PCR ...
Tópico(s): Orthopedic Infections and Treatments
2016 - Sumathi Publications | International Journal of Medical Research & Health Sciences
Rabiha Seboussi, Bernard Faye, Ghaleb Alhadrami, M.H. Askar, Wissam H. Ibrahim, Khalil Hassan, Bahaa Mahjoub,
Tópico(s): Trace Elements in Health
2008 - Springer Science+Business Media | Biological Trace Element Research