False-Positive Gallium-68 DOTATATE PET/CT in Vertebral Hemangioma

Ahmed Abdulrahman Alruwaili,Alaa Khalid Alduraibi,Alzayed Mohammed Fahed 대한핵의학회 2021 핵의학 분자영상 Vol.55 No.2

A healthy 52-year-old man started to have few minutes spells of palpitation, tachycardia, hot flashes, and chest tightness. He had a lab work-up for carcinoid, including 5-hydroxyindoleacetic acid (5-HIAA), which was negative. Months later, his symptoms became worse which warranted further investigation to exclude carcinoid disease. Gallium-68 DOTATATE positron emission tomography combined with computed tomography (PET/CT) scanning was performed to assess the patient for carcinoid tumor. It showed foci of radiotracer avidity in the thoracic and lumber spine. Magnetic resonance imaging (MRI) for the vertebral lesions showed atypical hemangioma. Subsequently, follow-up serum chromogranin A testing was negative.

Analysis of punching shear in high strength RC panels– experiments, comparison with codes and FEM results

Ahmed B. Shuraim,Fahid Aslam,Raja R. Hussain,Abdulrahman M. Alhozaimy 사단법인 한국계산역학회 2016 Computers and Concrete, An International Journal Vol.17 No.6

This paper reports on punching shear behavior of reinforced concrete panels, investigated experimentally and through finite element simulation. The aim of the study was to examine the punching shear of high strength concrete panels incorporating different types of aggregate and silica fume, in order to assess the validity of the existing code models with respect to the role of compressive and tensile strength of high strength concrete. The variables in concrete mix design include three types of coarse aggregates and three water-cementitious ratios, and ten-percent replacement of silica fume. The experimental results were compared with the results produced by empirical prediction equations of a number of widely used codes of practice. The prediction of the punching shear capacity of high strength concrete using the equations listed in this study, pointed to a potential unsafe design in some of them. This may be a reflection of the overestimation of the contribution of compressive strength and the negligence of the role of flexural reinforcement. The overall findings clearly indicated that the extrapolation of the relationships that were developed for normal strength concrete are not valid for high strength concrete within the scope of this study and that finite element simulation can provide a better alternative to empirical code Equations.

Spatial Decision Support System for Residential Solar Energy Adoption

Ahmed O. Alzahrani,Hind Bitar,Abdulrahman Alzahrani,Khalaf O. Alsalem International Journal of Computer ScienceNetwork S 2023 International journal of computer science and netw Vol.23 No.6

Renewable energy is not a new terminology. One of the fastest growing renewable energies is solar energy. The implementation of solar energy provides several advantages including the reduction of some of the environmental risks of fossil fuel consumption. This research elaborated the importance of the adaption of solar energy by developing a spatial decision support system (SDSS), while the Residential Solar Energy Adoption (RSEA) is an instantiation artifact in the form of an SDSS. As a GIS web-based application, RSEA allows stakeholders (e.g., utility companies, policymakers, service providers homeowners, and researchers) to navigate through locations on a map interactively. The maps highlight locations with high and low solar energy adoption potential that enables decision-makers (e.g., policymakers, solar firms, utility companies, and nonprofit organizations) to make decisions. A combined qualitative and quantitative methodological approach was used to evaluate the application's usability and user experience, and results affirmed the ability of the factors of utility, usefulness, and a positive user experience of the residential solar energy adoption of spatial decision support system (RSEA-SDSS). RSEA-SDSS in improving the decision-making process for potential various stakeholders, in utility, solar installations, policy making, and non-profit renewable energy domains.

The effect of alpha-lipoic acid supplementation on anthropometric, glycemic, lipid, oxidative stress, and hormonal parameters in individuals with polycystic ovary syndrome: a systematic review and meta-analysis of randomized clinical trials

Ahmed Abu-Zaid,Saeed Baradwan,Ibtihal Abdulaziz Bukhari,Abdullah Alyousef,Mohammed Abuzaid,Saleh A. K. Saleh,Heba M. Adly,Osama Alomar,Ismail Abdulrahman Al-Badawi 대한산부인과학회 2024 Obstetrics & Gynecology Science Vol.67 No.1

This systematic review and meta-analysis aimed to examine the effect of the antioxidant alpha-lipoic acid (ALA) on various cardiometabolic risk factors and hormonal parameters in patients with polycystic ovary syndrome (PCOS). We searched PubMed, EMBASE, SCOPUS, Cochrane Library, and Web of Science databases without language restrictions until May 2023 to find randomized controlled trials (RCTs) that assessed the impact of ALA supplementation on anthropometric, glycemic, lipid, oxidative stress, and hormonal parameters in women with PCOS. Outcomes were summarized using the standardized mean difference (SMD) and 95% confidence interval (CI) in a random-effects model. An I2 statistic of >60% established significant between-study heterogeneity. The overall certainty of the evidence for each outcome was determined using the grading of recommendations, assessment, development, and evaluations system. Seven RCTs met the inclusion criteria. The ALA group had significant reductions in fasting blood sugar (fasting blood sugar (FBS), n=7 RCTs, SMD, -0.60; 95% CI, -1.10 to -0.10; I2=63.54%, moderate certainty of evidence) and homeostatic model assessment for insulin resistance (homeostatic model assessment of insulin resistance (HOMA-IR), n=4 RCTs, SMD, -2.03; 95% CI, -3.85 to -0.20; I2=96.32%, low certainty of evidence) compared with the control group. However, significant differences were observed between the groups in body mass index, insulin, estrogen, follicle-stimulating hormone, luteinizing hormone, testosterone, low-density lipoprotein, highdensity lipoprotein, triglyceride, total cholesterol, malondialdehyde, or total antioxidant capacity profiles. ALA supplementation improves FBS and HOMA-IR levels in women with PCOS. ALA consumption is an effective complementary therapy for the management of women with PCOS.

Sustainable fabrication of silver-titania nanocomposites using goji berry (Lycium barbarum L.) fruit extract and their photocatalytic and antibacterial applications

한성수,( Abdulrahman Ahmed Sharwani ),( Kannan Badri Narayanan ),( Mohammad Ehtisham Khan ) 한국공업화학회 2021 한국공업화학회 연구논문 초록집 Vol.2021 No.1

Morphological and genetic diversity of Moringa oleifera and Moringa peregrina genotypes

Anber Mahmoud Ahmed Hassanein,Abdulrahman Abdulah Al‑Soqeer 한국원예학회 2018 Horticulture, Environment, and Biotechnology Vol.59 No.2

This study aimed to assess the diversity of Moringa oleifera and Moringa peregrina in Saudi Arabia. Seven genotypes per species were characterized morphologically using 14 morphological characteristics and genetically using 10 ISSR primers. The studied genotypes were classified according to each characterization, and the correlation between morphological and genetic diversity was investigated. M. oleifera genotypes were distinguished by long, thick stems with more crown spread, and larger pinnate leaf area compared to those of M. peregrina. Plant height and pinnate dimensions were the most pertinent indicators for the discrimination among genotypes where they were correlated to all morphological characteristics and gave representative classification. Diversity was found between the two species and among the genotypes of each species. The ISSR molecular markers were effective in the characterization of genetic diversity of Moringa where the average of polymorphism across the 14 genotypes was sufficient (90.8%). Dinucleotide repeat (AC)n primers (UBC825, UBC826 and UBC827) and a trinucleotide primer (UBC864) were the best primers, regenerating the maximum number of polymorphic bands per primer (8–10) and the highest polymorphism level among genotypes (91–100%). Principal coordinate analysis showed similar classification for morphological and molecular data where the two species were separated in two main clusters with three sub-clusters per species. The association analysis showed good correlation, up to a 0.84 determination coefficient, between genetic diversity and morphological variability. The primers UBC826 and UBC827 were the most informative markers, revealing correlations with 12 morphological characteristics. The results of the present study provide valuable morphological and molecular characterizations of the two most important Moringa species. Efficient morphological classification based on three characteristics could facilitate the evaluation of diversity in Moringa. Genetic diversity could be simply assessed using the two best ISSR primers (UBC826 and UBC827). The diversity found among genotypes could be of great importance for the selection of clones with desirable characteristics for further improvements of Moringa.

Audio Steganography Method Using Least Significant Bit (LSB) Encoding Technique

Alarood, Alaa Abdulsalm,Alghamdi, Ahmed Mohammed,Alzahrani, Ahmed Omar,Alzahrani, Abdulrahman,Alsolami, Eesa International Journal of Computer ScienceNetwork S 2022 International journal of computer science and netw Vol.22 No.7

MP3 is one of the most widely used file formats for encoding and representing audio data. One of the reasons for this popularity is their significant ability to reduce audio file sizes in comparison to other encoding techniques. Additionally, other reasons also include ease of implementation, its availability and good technical support. Steganography is the art of shielding the communication between two parties from the eyes of attackers. In steganography, a secret message in the form of a copyright mark, concealed communication, or serial number can be embedded in an innocuous file (e.g., computer code, video film, or audio recording), making it impossible for the wrong party to access the hidden message during the exchange of data. This paper describes a new steganography algorithm for encoding secret messages in MP3 audio files using an improved least significant bit (LSB) technique with high embedding capacity. Test results obtained shows that the efficiency of this technique is higher compared to other LSB techniques.

Use of social media in education among medical students in Saudi Arabia

Anas Khaleel Alsuraihi,Ahmed Saeed Almaqati,Sultan Adnan Abughanim,Nisreen Abdulrahman Jastaniah 한국의학교육학회 2016 Korean journal of medical education Vol.28 No.4

Purpose: Social media (SM), a virtual place where people can share, exchange, and communicate their ideas and knowledge, has become the new trend in communication and learning. This study aims to explore Saudi Arabian medical students’ usage of SM and to discover the most common resources used in medical education. Furthermore, it aims to illustrate students’ belief about the influence of SM on their learning. Methods: This cross-sectional study administered validated questionnaires to medical students from different universities in Saudi Arabia, via emails, Twitter, Facebook, and short message service. A non-probability sampling technique was utilized and a sample size of 381 students was arrived at, using 95% confidence interval and 5% margin of error, since the total number of medical students in Saudi Arabia is approximately 36,000. The total respondents were 657 students from 23 different Saudi Arabian medical schools (females: 60.5%, n=397; males: 39.5%, n=260). Results: The questionnaires of 21% of the students (n=139) were excluded from the analysis since they were incomplete. The most common website used by both genders was YouTube (42.3%, n=185); however, males preferred using Twitter and Wikis (p=0.001). With regard to utilizing SM for learning, 95.8% (n=419) of the students believed that it is beneficial. Females stated that SM helps them link basic and clinical science (p=0.003). Conclusion: Medical schools need to improve the utilization of SM by their faculty and students by developing activities and encouraging the usage of SM in education.

Heart failure in children and adolescents: an update on diagnostic approaches and management

Amit Agrawal,Dalwinder Janjua,Abdulrahman Ahmed Alsayed Ali Zeyada,Ahmed Taher Elsheikh 대한소아청소년과학회 2024 Clinical and Experimental Pediatrics (CEP) Vol.67 No.4

Cardiac failure is a clinical syndrome that may develop in children owing to cardiac dysfunction or underlying structural heart diseases. Considering the differences indiagnostic and therapeutic approaches for pediatric heart failure (PHF) and adult heart failure, we have reviewed the current literature on PHF. Relevant studies wereextracted from MEDLINE/PubMed, Google Scholar, and Clinical Trial Registries using the terms “pediatric heart failure” or “heart failure in children” and “management” or “decongestive therapy.” Recent advances in diagnosticapproaches, such as cardiac magnetic resonance, speckletracking echocardiography, tissue Doppler imaging, and molecular diagnostic techniques, have increased our understanding of PHF.Itis imperative that clinicians evaluate the interrelated factors responsible for the development of PHF, including myocardial function, pulmonary and systemic blood flow, heart rhythm, valve function, and nutritional status. Although recent advances have demonstrated the efficacy of many new drugs in adult heart failure trials, it cannot be concluded that these drugs will show similar efficacy in children, considering the heterogeneous nature of the underlying mechanisms and variable pharmacodynamics and pharmacokinetics. Therefore, the underlying pathophysiology of PHF and the mechanisms of actionof different drugs should be considered when selecting appropriate therapies.Further trials areneededto establish the efficacy and safety of these drugs, and a combined multidisciplinary strategy will help enhance PHF outcome

Burden of Early Life Obesity and Its Relationship with Protein Intake in Infancy: The Middle East Expert Consensus

Frank Jochum,Mohamed Abdellatif,Ashraf Adel,Ahmed Alhammadi,Abdulrahman Alnemri,Eman Alohali,Khaled AlSarraf,Khoula Al-Said,Mahmoud Elzalabany,Hasan M. A. Isa,Sridhar Kalyanasundaram,Naguib Abdel Rehe 대한소아소화기영양학회 2022 Pediatric gastroenterology, hepatology & nutrition Vol.25 No.2

Adequate nutrition in early life is proposed to shape a child’s future health by launching the growth trajectory in the proper direction, which helps to avoid negative metabolic programming effects. Protein intake during infancy and early childhood is of great importance, as it plays a key role in infant metabolic programming and the future risk of obesity. Breastfeeding provides the best nutrition in early life, with many benefits tailored for the baby, including the appropriate quantity and quality of proteins. Considering the high prevalence of childhood, and subsequent adult, obesity in the region, a virtual Middle East expert consensus meeting was held to discuss an effective approach for managing childhood obesity. Leading pediatric experts from Bahrain, Egypt, Kuwait, Oman, Qatar, Saudi Arabia, and the United Arab Emirates participated in the meeting. The experts discussed, debated, and agreed on certain directions, including the importance of educating parents, endorsing breastfeeding, and ensuring optimum quantity and quality intake of proteins in early life. This expert consensus may serve as the starting point for healthcare professionals in the region who are interested in shaping a healthy future for the generations to come.