Global wealth disparities drive adherence to COVID-safe pathways in head and neck cancer surgery

Peer reviewe

Recognition of Classical Arabic Poems

This work presents a novel method for recognizing and extracting classical Arabic poems found in textual sources. The method utilizes the basic classical Arabic poem features such as structure, rhyme, writing style, and word usage. The proposed method achieves a precision of 96.94 % while keeping a high recall value at 92.24%. The method was also used to build a prototype search engine for classical Arabic poems.

Recognition of classical Arabic poems

rekognisi puisi Arab klasik.15 hlm

Effect of Utility Cut Patching on Pavement Deterioration

Utility Cut Patching (UCP) is a major cause of pavement deterioration in city streets. The streets of the city of Riyadh are no exception. A study was undertaken to investigate factors related to UCP and possibly contributing to pavement deterioration. Existing pavement condition, materials properties of patch and pavement, and geometry of trench were among factors investigated. Pavement deterioration was evaluated by deflection measurements at various points on the patch and existing pavement using falling weight deflectometer. Analysis of the results indicated that deflection at center of patch is the most critical one. Furthermore, deflection readings at various points on the patch indicated the dependency of patch deflection on trench geometry and existing pavement structural conditions. Investigation of patching effects on pavement roughness suggested an increase in roughness of pavement due to UCP

Effect of Utility Cut Patching on Pavement Deterioration

Utility Cut Patching (UCP) is a major cause of pavement deterioration in city streets. The streets of the city in Riyadh are no exception. A study was undertaken to investigate factors related to UCP and possibly contributing to pavement deterioration. Existing pavement condition, materials properties of patch and pavement, and geometry of trench were among factors investigated. Pavement deterioration was evaluated by deflection measurements at various points on the patch and existing pavement using falling weight deflectometer, Analysis of the results indicated that deflection at center of patch is the most critical one. Furthermore, deflection readings at various points on the patch indicated the dependency of palthdeflection on trenchgeometry and existing pavement structural conditions. Investigation of patching effects on pavement roughness suggested an increase in roughness of pavement due to UCCorresponding Author: Prof. Abdulrahman Saleh Al-Suhaibani, Department of Civil Engineering, College of Engineering, King Saud University,P.O. Box 800, Riyadh 11421 Saudi Arabia. Email: [email protected]

Exposure to Methylmercury at Juvenile Stage Worsens Autism-like Symptoms in Adult BTBR T+tf/J Mice Due to Lack of Nuclear Factor Erythroid 2-Related Factor 2 Signaling Upregulation in Periphery and Brain

Autism spectrum disorder (ASD) is a multifaceted developmental condition that first appears in infancy. The condition is characterized by recurrent patterns in behavior and impairments in social and vocalization abilities. Methylmercury is a toxic environmental pollutant, and its derivatives are the major source of organic mercury to human beings. Inorganic mercury, which is released from a variety of pollutants into oceans, rivers, and streams, is transformed into methylmercury by bacteria and plankton in the water, which later builds up in fish and shellfish, and then enters humans through the consumption of fish and shellfish and increases the risk of developing ASD by disturbing the oxidant–antioxidant balance. However, there has been no prior research to determine the effect of juvenile exposure of methylmercury chloride on adult BTBR mice. Therefore, the current study evaluated the effect of methylmercury chloride administered during the juvenile stage on autism-like behavior (three-chambered sociability, marble burying, self-grooming tests) and oxidant–antioxidant balance (specifically Nrf2, HO-1, SOD-1, NF-kB, iNOS, MPO, and 3-nitrotyrosine) in the peripheral neutrophils and cortex of adult BTBR and C57BL/6 (B6) mice. Our results show that exposure to methylmercury chloride at a juvenile stage results in autism-like symptoms in adult BTBR mice which are related to a lack of upregulation of the Nrf2 signaling pathway as demonstrated by no significant changes in the expression of Nrf2, HO-1, and SOD-1 in the periphery and cortex. On the other hand, methylmercury chloride administration at a juvenile stage increased oxidative inflammation as depicted by a significant increase in the levels of NF-kB, iNOS, MPO, and 3-nitrotyrosine in the periphery and cortex of adult BTBR mice. This study suggests that juvenile exposure to methylmercury chloride contributes to the worsening of autism-like behavior in adult BTBR mice through the disruption of the oxidant–antioxidant balance in the peripheral compartment and CNS. Strategies that elevate Nrf2 signaling may be useful to counteract toxicant-mediated worsening of ASD and may improve quality of life