This paper presented the preparation, characterization, and adsorption properties of Brazil nut shell activated carbon for catechol removal from aqueous solutions. The equilibrium adsorption of catechol molecules on this activated was experimentally quantified at pH 6 and temperatures ranging from 25 to 55 °C, and at 25 °C and pH ranging from 6 to 10. These results were utilized to elucidate the role of surface functionalities through statistical physics calculations.
View Article and Find Full Text PDFBackground Computer vision syndrome (CVS) is a common condition affecting individuals who spend prolonged periods using electronic devices. It is characterized by symptoms such as eye strain, dryness, headaches, and neck pain. This study aims to assess the prevalence of CVS symptoms among healthcare professionals, their awareness of the condition, and the effectiveness of various preventative practices.
View Article and Find Full Text PDFContext: In this comparative study of the adsorption of L-phenylalanine (L-Phe) on two modified low-activated carbons (ACK and ACZ) at four temperatures (293-313 K), steric and energetic characteristics of adsorption were investigated. An advanced statistical physics multilayer model involving single-layer and double-layer adsorption scenarios was developed to interpret the L-Phe adsorption phenomenon. Modeling results indicate that two and three L-Phe layers were arranged depending on the tested adsorption systems.
View Article and Find Full Text PDFBackground: Patient satisfaction with rhinoplasty results is evaluated in a manner of subjective and qualitative values, and to a certain degree, it can indicate successful outcomes in rhinoplasty.
Methods: The present study was a descriptive study that assessed the rhinoplasty outcome of adult patients who underwent septorhinoplasty between January 2015 and August 2023 at a single center in Saudi Arabia utilizing Rhinoplasty Outcome Evaluation scores and Nasal Obstruction Symptom Evaluation scores pre-operatively, postoperatively, and postoperatively with showing the patients their photo before surgery.
Results: The comparison of Rhinoplasty Outcome Evaluation scores and Nasal Obstruction Symptom Evaluation scores showed statistically significant with P value of 0.
One of the most important indicators of rhinoplasty success is nasal skin thickness. Nasal thickness can lead to irregularities over the osseocartilaginous framework among patients with thin nasal skin and difficulty making tip work changes in patients with thick nasal skin. This study aimed to compare different objective methods.
View Article and Find Full Text PDFBackground: The variety of noses in the mixed Saudi population keeps rhinoplasty surgeons on their toes. The main treatment goal for drooping nose tips is the first rotation of the nasal tip superiorly. Although droopy nose is a common disease in Saudi Arabia, none of the previous studies recognized the general features of droopy nose.
View Article and Find Full Text PDFEur Arch Otorhinolaryngol
September 2024
Background: Accurate methods are needed to evaluate the anatomy of the internal nasal valve (INV), yet there is currently no ideal measurement technique. Our systematic review aims to establish a comprehensive INV assessment tool, compare different INV diagnostic tools, and establish the most ideal measurement technique for the evaluation of the INV.
Methods: A systematic review and meta-analysis were conducted following the PRISMA guidelines, and the study was recorded in PROSPERO under reference number CRD42023407950.
Background: Olfactory and gustatory dysfunctions are frequently reported symptoms among COVID-19 patients. However, several reports suggested that there might be significant variation in the prevalence and clinical picture of chemosensory dysfunction in COVID-19 patients among different population.
Objective: To study the prevalence of chemosensory dysfunction, recovery time and its impact on quality of life (QoL) among COVID-19 patients in Saudi population.
The issue of various estimation techniques in constant partially accelerated life tests with complete data is the main subject of this research. The Chen distribution is regarded as an item's lifetime under use conditions. To estimate the distribution parameters and the acceleration factor, maximum likelihood estimation, least square estimation, weighted least square estimation, Cramér Von-Mises estimation, Anderson-Darling estimation, right-tail Anderson-Darling estimation, percentile estimation, and maximum product of spacing estimation are presented for classical estimation.
View Article and Find Full Text PDFIntroduction And Importance: Duplication of the middle turbinate is an extremely rare condition encountered in rhinology clinic. Knowledge and awareness of the nasal turbinates' variations are important to perform a safe endoscopic surgery and evaluate patients with inflammatory sinus diseases.
Case Presentation: Case series of two patients who visited rhinology clinic in academic university hospital.
Introduction: A narrow duplicated internal auditory canal (IAC) is an extremely rare anomaly, likely associated with congenital sensorineural hearing loss due to aplasia/hypoplasia of the vestibulocochlear nerve or the cochlear branch alone. We aimed to review our experience with IAC duplication, describe its clinical characteristics, and present a literature review.
Case Presentation: Our Otology database was searched for children who showed duplication of the IAC.
Background: Tracheostomy is among the oldest and most common surgical procedures for critically ill patients. Over the past decade, tracheostomy practice has changed regarding its indication, timing, technique, decannulation, and follow-up procedures. A systematic assessment tool for tracheostomy could maximize the quality of care and improve patient outcomes.
View Article and Find Full Text PDFObjectives: To assess the otorhinolaryngological (ORL) symptoms, including their prevalence, severity, and early presentations among coronavirus disease-19 (COVID-19) patients in the Saudi population.
Methods: This was a multicentric, cross-sectional study carried out on severe acute respiratory syndrome coronavirus-2 positive patients at 3 COVID-19 centres; Imam Abdulrahman Bin Faisal University, King Fahd Hospital of the University, ALKhobar, Qatif Central Hospital, AlQatif, and Ohud Hospital, Al Madinah Al Munawarah, Saudi Arabia. The validated survey consisted of sociodemographic data, general symptoms of COVID-19, and ORL manifestations.
Introduction: Cystic fibrosis (CF) has been reported before in Saudi Arabia and the Gulf area. It has been found that screening for 10 most common cystic fibrosis transmembrane conductance regulator (CFTR) mutations can detect 80% of positive CFTR cases.
Objectives: To determine the geographic distribution of the most common CFTR variants in 5 regions of Saudi Arabia.
Background Multiple sclerosis (MS) is a serious chronic autoimmune disorder of the central nervous system of unknown etiology. MS-related depression is a common mood disorder recognized within the medical community. However, their association is ambiguous, underdiagnosed, undertreated and less reported.
View Article and Find Full Text PDFDiabetes Metab Syndr Obes
January 2020
Objective: This study was carried out in type 2 diabetes mellitus (T2DM) patients to assess their knowledge, attitude and practice about fasting during Ramadan and to identify the sociodemographic determinants of the knowledge, attitude and practice.
Methods: A total of 107 T2DM patients were interviewed at a diabetes clinic in the Eastern Saudi Arabia. A questionnaire containing knowledge, attitude and practice questions about fasting during Ramadan was used to collect data.
Several methods have been proposed to allow functional genomic information to inform prior distributions in Bayesian fine-mapping case-control association studies. None of these methods allow the inclusion of partially observed functional genomic information. We use functional significance (FS) scores that combine information across multiple bioinformatics sources to inform our effect size prior distributions.
View Article and Find Full Text PDFIntroduction: Hematologic diseases are rarely present with sudden hearing loss as an initial symptom. Although the precise cause of sudden sensorineural hearing loss has not been identified, several pathophysiological mechanisms have been proposed. However, a variety of hematologic diseases are among the causes of sudden onset deafness.
View Article and Find Full Text PDFBackground: Diabetes and ear disease are some of the most widespread health concerns. The focus here is on the impact of using the term "Diabetic Ear" for patients with skull base osteomyelitis (SBM) in the context of malignant otitis externa (MOE). The aim of this study was to discover the awareness of general practitioners (GPs), residents, specialists, and consultants at Primary Health Care Centers about necrotizing otitis externa (NOE), also known previously as malignant external otitis (MOE), assess their deficiencies and provide solutions; also assist them for the early detection and possible prevention of diabetes- related ear diseases and their complications.
View Article and Find Full Text PDFInt J Surg Case Rep
September 2018
Introduction: Squamous cell carcinoma (SCC) of the temporal bone is a rare malignancy. Clear cell SCC is a rare variant of SCC of temporal bone in which no clear risk factor has been suggested as possible etiology. Otalgia, otorrhea, and hearing loss are the usual presenting symptoms of SCC of the temporal bone.
View Article and Find Full Text PDFObjectives: The aim of this study is to assess the knowledge, attitudes, practices and risk factors influencing diabetic foot ulcers among diabetes patients attending a diabetic clinic in a Saudi hospital.
Methods: In this cross-sectional study, a random sample of 229 participants was selected from the diabetic clinic of the outpatient department of King Fahd Hospital of the University of Dammam during January to March 2015. A pre-tested structured questionnaire was administered to the diabetes patients to obtain information regarding the outcome variables.