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Mohammad Omar

    Mohammad Omar

    When database is stored in one computer or server, certain issues related to disaster (in terms of natural or un-natural) problem may arise with reference to geographical connection and geographical distribution of servers. Here,... more
    When database is stored in one computer or server, certain issues related to disaster (in terms of natural or un-natural) problem may arise with reference to geographical connection and geographical distribution of servers. Here, replication feature plays an important role. There were many techniques and methodologies for geographically distributed servers, but the problem was of one master. When an authorized user updates his database on a client database server then this client database server updates his master database server and at last, the master database server updates all its client’s database servers. The described process is called database replication. In this process, there are several main parameters that are important, i.e., bandwidth, memory, and processor time. In this paper, the analysis is focused on comparing which database (NoSQL family-RethinkDB and MySQL) utilize how much memory, processor, and time during replication of database from client to master.
    This paper describes how PMCD with an overbalanced drilling mud, instead of Light Annular Mud, was used to successfully drill and complete a well in gas bearing carbonates offshore Malaysia. This unconventional approach was adopted after... more
    This paper describes how PMCD with an overbalanced drilling mud, instead of Light Annular Mud, was used to successfully drill and complete a well in gas bearing carbonates offshore Malaysia. This unconventional approach was adopted after encountering poor formation injectivity and severe dynamic losses in the 8-1/2″ reservoir section. Dynamic losses of 700 bbl/hr were encountered after drilling into the carbonate formation, but the subsequent injectivity test surface pressure prevented the well being converted to PMCD with LAM. LCM pills were spotted and the mud weight was cut by 0.2 ppg but severe dynamic losses continued. An injectivity test was performed with seawater and the surface pressure stabilized around 500 psi. Drilling resumed with overbalanced drilling mud in the annulus, which was top filled during connections to keep the hole full and to monitor the annulus with a nominal surface pressure, while seawater was pumped down the string. After reaching TD, the drilling BHA ...
    Cutibacterium acnes (C. acnes), known previously as Proprionebacterium acnes, is a common skin and mucous membrane colonizing bacteria. On rare occasions it has been associated with invasive infections in both immunocompetent and... more
    Cutibacterium acnes (C. acnes), known previously as Proprionebacterium acnes, is a common skin and mucous membrane colonizing bacteria. On rare occasions it has been associated with invasive infections in both immunocompetent and immunosuppressed patients. We describe the case of a 55-year-old female with a history of Sjogren's syndrome and psoriatic arthritis on TNF-alpha inhibitor therapy with etanercept. She presented with signs and symptoms of a thoracic infection with pulmonary nodules, hilar adenopathy, and bronchiectasis on thoracic computed tomography. She was diagnosed with C. acnes pneumonia based on culture growth from both endoscopic bronchial ultrasound transbronchial lymph node needle biopsy and navigational bronchoscopy transbronchial lung biopsy. Our patient noticed marked symptom relief and radiographic pulmonary parenchymal improvement with intravenous ceftriaxone provided for a six-week course. This case highlights the potential invasive disease caused by C. acnes, a common skin commensal.
    Talent attraction is contemporarily subject to extensive research due to prevalent gaps which hold significance in the field of human resource management. This article describes how students graduating from a business school in Karachi,... more
    Talent attraction is contemporarily subject to extensive research due to prevalent gaps which hold significance in the field of human resource management. This article describes how students graduating from a business school in Karachi, Pakistan perceive various organizational factors in terms of their impact on the attractiveness of the firm as a place to work. The framework used in the study included exogenous constructs depicting compensation, both direct and indirect, along with Corporate social responsibility, both internal and external in organizations. The influences of both compensation and CSR on organizational attractiveness were examined in the study. The segregation of respondents in terms of gender was used as a moderator. The moderating influence of gender segregation on the relationship between exogenous and endogenous constructs was also examined in this paper. In the study 130 responses were received and 112 were found suitable for the analysis. The results were ana...
    Diabetic ketoacidosis (DKA) is one of the most common causes of morbidity and mortality in patients with type 1 DM. Due to severe acidosis, ketonemia and electrolyte disturbances it can lead to various complications in the body, which can... more
    Diabetic ketoacidosis (DKA) is one of the most common causes of morbidity and mortality in patients with type 1 DM. Due to severe acidosis, ketonemia and electrolyte disturbances it can lead to various complications in the body, which can be fatal in some cases. Neurological complications related to DKA include cerebral edema, cerebral infarction, brain herniation, cortical venous thrombosis. It is very rare for DKA to cause subarachnoid hemorrhage (SAH). We present a case 19-year-old female with severe DKA, who developed SAH without any pre-existing aneurysm or other common risk factors. The patient did not have any neurologic deficits and was managed conservatively with the resolution of her symptoms. We have also summarized the existing literature regarding the association of DKA with subarachnoid hemorrhage.
    In line with the global markets’ current trend, the Palestinian market has recently witnessed consecutive implementations of different sales technologies by leading firms in different industries; one of these technologies is the Sales... more
    In line with the global markets’ current trend, the Palestinian market has recently witnessed consecutive implementations of different sales technologies by leading firms in different industries; one of these technologies is the Sales Force Automation (SFA) technology. However, although the adoption and use of sales technologies have been attractive topics for IT literature over the last two decades, the Palestinian empirical research remains silent in this regard, leaving the outcomes of implementing and using the SFA technology in the Palestinian market unveiled yet. Accordingly, this study unfolds the outcomes of SFA usage and uncovers whether this technology tells a successor a failure-story among the Palestinian firms employing it. Based on literature review and a case study of SFA implementation by one of the leading Palestinian firms, a group of expected outcomes was hypothesized to measure the realization of the SFA technology benefits from three perspectives: sales managers...
    This study presents a framework or path modeling for assessing the impact of ISO9001 adoption and customer-focused programmes on Malaysian Small and Medium Enterprises’(SMEs) business performance. Based on the framework, this study will... more
    This study presents a framework or path modeling for assessing the impact of ISO9001 adoption and customer-focused programmes on Malaysian Small and Medium Enterprises’(SMEs) business performance. Based on the framework, this study will be able to evaluate the following specific research issues, i.e., to what extent (i) ISO 9001 certified companies experience high levels of operational performance ;(ii) ISO 9001 certified companies become competitive in the market; (iii) ISO 9001 adoption produces a significant effect on business performance of ISO 9001 certified companies, and (iv) Customer Focus programmes and its expected outcome, i.e., Customer Satisfaction, contribute significantly to the business performance of ISO 9001 certified companies. Survey questionnaires developed in this study have three major sections: (a) ISO 9001 Adoption features, (b) Customer Focus, and (c) Business Performance. Using a data set of of 91 respondents who are the owners of SMEs in Malaysia, reliabi...
    4. Understanding and Applying Cryptography and Data Security by Adam J. Elbirt Review by Jérémy Barbay. This book describes cryptographical mechanisms and some of the mathematical concept required to understand them, from a very technical... more
    4. Understanding and Applying Cryptography and Data Security by Adam J. Elbirt Review by Jérémy Barbay. This book describes cryptographical mechanisms and some of the mathematical concept required to understand them, from a very technical point of view, with a particular emphasis on the techniques of efficient implementation in hardware and software, as well as on the attacks that have been proposed in recent publications.
    The Use of Fluorescence Spectroscopy as a Tool to Follow Classification and Degradation of Labled Olive Oil "Sold at Supermarkets" and Unlabeled Olive Oil "Used in Public Restaurants" Versus Well Classified Local and... more
    The Use of Fluorescence Spectroscopy as a Tool to Follow Classification and Degradation of Labled Olive Oil "Sold at Supermarkets" and Unlabeled Olive Oil "Used in Public Restaurants" Versus Well Classified Local and International Olive Oil Samples، للحصول على النص الكامل يرجى زيارة مكتبة الحسين بن طلال في جامعة اليرموك او زيارة موقعها الالكتروني
    Objective: A new Bayesian penalized likelihood reconstruction algorithm for positron emission tomography (PET) (Q.Clear) is now in clinical use for fludeoxyglucose (FDG) PET/CT. However, experience with non-FDG tracers and in special... more
    Objective: A new Bayesian penalized likelihood reconstruction algorithm for positron emission tomography (PET) (Q.Clear) is now in clinical use for fludeoxyglucose (FDG) PET/CT. However, experience with non-FDG tracers and in special patient populations is limited. This pilot study aims to compare Q.Clear to standard PET reconstructions for 18F sodium fluoride (18F-NaF) PET in obese patients. Methods: 30 whole body 18F-NaF PET/CT scans (10 patients with BMI 30–40 Kg/m2 and 20 patients with BMI >40 Kg/m2) and a NEMA image quality phantom scans were analyzed using ordered subset expectation maximization (OSEM) and Q.Clear reconstructions methods with B400, 600, 800 and 1000. The images were assessed for overall image quality (IQ), noise level, background soft tissue, and lesion detectability, contrast recovery (CR), background variability (BV) and contrast-to-noise ratio (CNR) for both algorithms. Results: CNR for clinical cases was higher for Q.Clear than OSEM (p < 0.05). Mean ...
    The COVID-19 pandemic has severely impacted many industries, in particular the healthcare sector exposing systemic vulnerabilities in emergency preparedness, risk mitigation, and supply chain management. A major challenge during the... more
    The COVID-19 pandemic has severely impacted many industries, in particular the healthcare sector exposing systemic vulnerabilities in emergency preparedness, risk mitigation, and supply chain management. A major challenge during the pandemic was related to the increased demand of Personal Protective Equipment (PPE) resulting in critical shortages for healthcare and frontline workers. The lack of information visibility combined with the inability to precisely track product movement within the supply chain requires an robust traceability solution. Blockchain technology is a distributed ledger that ensures a transparent,safe, and secure exchange of data among supply chain stakeholders. The advantages of adopting blockchain technology to manage and track PPE products in the supply chain include decentralized control, security, traceability,and auditable time-stamped transactions. In this paper, we present a blockchain-based approach using smart contracts to transform PPE supply chain op...
    This paper will discuss the Case study of well decommissioning campaign in block SK 305, Sarawak, Malaysia which had completed in October 2017. All the seven (7) production wells from 2 platforms and nine (9) suspended subsea (with... more
    This paper will discuss the Case study of well decommissioning campaign in block SK 305, Sarawak, Malaysia which had completed in October 2017. All the seven (7) production wells from 2 platforms and nine (9) suspended subsea (with mudline suspension system, MLS) exploration wells have been successfully abandoned, safely and with very optimum cost. Many challenges were encountered during planning and execution of the well decommissioning campaign (i.e. well integrity - leaking well, high annulus pressure, facilities integrity and complexity, shallow gas, pipelines and old rig footprint issues, handling tubulars with marine growth, grout cement - dual cemented casing, buried well, etc), and the main challenges as a company is to execute the operation safely with optimum cost, whilst ensuring safe barrier being installed for long term well isolation. This paper will present: Well Decommissioning Planning, Preparation and Execution at Block SK 305 (Production and suspended Exploration Wells)Major Challenges and Lesson LearntOptimization, Technologies, and Best PracticesCAPROCK P&A Method Application This paper sharing session will help other operators to understand better on how well decommissioning can be planned and executed, as well as improvement that can be performed in the future.
    Calciphylaxis or calcific uremic arteriolopathy (CUA) is a potentially life-threatening vasculopathy involving the skin and subcutaneous tissues. It is usually associated with chronic kidney disease (CKD) and rarely with acute renal... more
    Calciphylaxis or calcific uremic arteriolopathy (CUA) is a potentially life-threatening vasculopathy involving the skin and subcutaneous tissues. It is usually associated with chronic kidney disease (CKD) and rarely with acute renal failure or predialysis patients. The clinical diagnosis of calcific uremic arteriolopathy relies on high index of suspicion. CUA is commonly associated with secondary hyperparathyroidism and high serum calcium and phosphate products. Moreover, using biopsy as a diagnostic tool is controversial, due to the high risk of poor wound healing and sepsis. Radiological studies usually reveal extensive calcification of branching vessels such as penile arteries, eventually leading to gangrene formation in extremities and penis. Histopathological analysis confirms the diagnosis of calcific uremic arteriolopathy and rules out the presence of malignancy. CUA is a systematic disease that involves multiple organs, and to the best of our knowledge this is the first repo...
    Surgical site infection (SSI) is one of the most common infections associated with health care, but its importance as a global health priority is not fully understood. We quantified the burden of SSI after gastrointestinal surgery in... more
    Surgical site infection (SSI) is one of the most common infections associated with health care, but its importance as a global health priority is not fully understood. We quantified the burden of SSI after gastrointestinal surgery in countries in all parts of the world. This international, prospective, multicentre cohort study included consecutive patients undergoing elective or emergency gastrointestinal resection within 2-week time periods at any health-care facility in any country. Countries with participating centres were stratified into high-income, middle-income, and low-income groups according to the UN's Human Development Index (HDI). Data variables from the GlobalSurg 1 study and other studies that have been found to affect the likelihood of SSI were entered into risk adjustment models. The primary outcome measure was the 30-day SSI incidence (defined by US Centers for Disease Control and Prevention criteria for superficial and deep incisional SSI). Relationships with e...
    Raudhatain-Mauddud, a super-giant depletion oil reservoir in North Kuwait, consists primarily of two areas: the crest of the reservoir with good rock/fluid quality and the flank area with poor rock/fluid quality. In some areas of the... more
    Raudhatain-Mauddud, a super-giant depletion oil reservoir in North Kuwait, consists primarily of two areas: the crest of the reservoir with good rock/fluid quality and the flank area with poor rock/fluid quality. In some areas of the reservoir, however, especially in the flanks, the rock attributes are not fully mapped. The typical perforation that is being followed while completing the wells in the flank area of the reservoir uses either wireline-conveyed perforation or the underbalance firing TCP shoot and pull technique. The wells are then often acid stimulated to improve the injectivity/productivity profile of the injector/producer wells, respectively. A new approach involving the propellant-assisted perforation technique was applied in five wells in the flank area of the Raudhatain-Mauddud reservoir. The results show a significant improvement of injectivity/productivity. Because this technique was being used for the first time in this reservoir, and probably for the first time ...
    Horizontal drilling technology was used for the first time in the Middle Cretaceous Lower Burgan Layered Sand reservoir of Raudhatain Field, Kuwait for enhancement of oil production. The reservoir has been on production using conventional... more
    Horizontal drilling technology was used for the first time in the Middle Cretaceous Lower Burgan Layered Sand reservoir of Raudhatain Field, Kuwait for enhancement of oil production. The reservoir has been on production using conventional development techniques for the past 50 years.The channel sands of the Lower Burgan Layered unit were targeted. These sands are much thinner than the world class Lower Burgan Massive Sand and became an ideal target for development by horizontal drilling. However these layered sands are very prolific and are at irreducible water saturation. These sands were de an ideal target for development by horizontal drilling. However these layered sands are very prolific and are at irreducible water saturation. These sands weic and are at irreducible water saturation. These sands were deposited in a clastic coastal environment. The complex geometry and heterogeneity make these sands a real challenge to place lateral boreholes within the sand.The challenge of ho...
    ... ct 4 as Page 10. ... Similar observations were made by Nadarajah (1982) in her studies on A. cepa. Earlier studies on several plant species (including at least 4 species of grasses) also failed to give satisfactory propagation of... more
    ... ct 4 as Page 10. ... Similar observations were made by Nadarajah (1982) in her studies on A. cepa. Earlier studies on several plant species (including at least 4 species of grasses) also failed to give satisfactory propagation of selected VAM species (Noraini & Maziah, pers. ...