Structural and Optical Properties of Nickel-Doped Zinc Sulfide.

In this study, undoped and Ni-doped ZnS nanoparticles were fabricated using a hydrothermal method to explore their structural, optical, and surface properties. X-ray diffraction (XRD) analysis confirmed the cubic crystal structure of ZnS, with the successful incorporation of Ni ions at various doping levels (2%, 4%, 6%, and 8%) without disrupting the overall lattice configuration. The average particle size for undoped ZnS was found to be 5.

A High-Performance CrO/CaCO Nanocomposite Catalyst for Rapid Hydrogen Generation from NaBH.

This study aims to prepare new nanocomposites consisting of CrO/CaCO as a catalyst for improved hydrogen production from NaBH methanolysis. The new nanocomposite possesses nanoparticles with the compositional formula CrCaO (x = 0, 0.3, and 0.

Awareness of Risk Factors for Coronary Artery Disease in the Population of Al-Majma'ah Region, Saudi Arabia.

Background: Coronary artery disease (CAD) is a significant global health concern and a leading cause of morbidity and mortality. As a complex cardiovascular condition, CAD arises from the accumulation of atherosclerotic plaques within the coronary arteries, leading to restricted blood flow to the heart muscle. While CAD has been extensively studied, its prevalence remains a challenge, particularly in diverse populations with distinct cultural and lifestyle practices.

Awareness, Knowledge, and Attitudes Regarding Basic Life Support Among the General Population in the Al-Majma'ah Region, Saudi Arabia.

Background: Cardiac arrest is a critical medical emergency that can strike individuals of any age or background, often occurring suddenly and unpredictably. The administration of Basic Life Support (BLS) techniques by laypersons in the first few crucial minutes following a cardiac arrest can substantially increase the chances of survival and minimize potential neurological damage. Despite the vital role of BLS in saving lives, there remains a gap in public awareness, knowledge, and attitudes regarding BLS among the general population in many regions worldwide, including Saudi Arabia.

Synthesis of Sulfur@g-CN and CuS@g-CN Catalysts for Hydrogen Production from Sodium Borohydride.

In this work, the S@g-CN and CuS@g-CN catalysts were prepared via the polycondensation process. The structural properties of these samples were completed on XRD, FTIR and ESEM techniques. The XRD pattern of S@g-CN presents a sharp peak at 27.

Preparation and Optical Properties of PVDF-CaFeO Polymer Nanocomposite Films.

In this work, a synthesis technique for highly homogeneous PVDF-CaFeO polymer films direct from solution was developed. The structural characterizations were conducted using XRD, FTIR, and ESEM experimental techniques. The XRD characteristic peaks of CaFeO nanoparticles revealed a polycrystalline structure.

In Situ Polycondensation Synthesis of NiS-g-CN Nanocomposites for Catalytic Hydrogen Generation from NaBH.

The nanocomposites of S@g-CN and NiS-g-CN were synthesized for catalytic hydrogen production from the methanolysis of sodium borohydride (NaBH). Several experimental methods were applied to characterize these nanocomposites such as X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and environmental scanning electron microscopy (ESEM). The calculation of NiS crystallites revealed an average size of 8.

MoO/S@g-CN Nanocomposite Structures: Synthesis, Characterization, and Hydrogen Catalytic Performance.

Hydrogen production as a source of clean energy is high in demand nowadays to avoid environmental issues originating from the use of conventional energy sources i.e., fossil fuels.

Isolated Kimura Disease Presenting as a Brow Mass in a Saudi Male: A Rare Case Report.

This is a case of a 36-year-old male not known to have any medical illness complaining of left upper painless swelling in the eyebrow with no systemic symptoms, and normal physical examination apart from the eyebrow mass. Computed tomography (CT) of the head showed a well-defined hyperdense subcutaneous soft tissue lesion seen at the medial aspect of the left orbit (eyelid-extra orbital). Excisional biopsy of the eyebrow mass was done and sent for histopathological evaluation which reports consistent findings with Kimura disease (KD) as a definitive diagnosis.

Deepening Fornix Technique Using Central Split-Medium Thickness Skin Graft to Treat Contracted Anophthalmic Sockets.

Purpose: The aim of thhis study was to present the outcomes of postauricular split-medium thickness skin graft (SMTSG) to treat anophthalmic sockets with contracted fornices.

Methods: This case series enrolled patients with grade 2 or 3 anophthalmic sockets between 2015 and 2016. Data were collected on patient demographics, objective and subjective parameters preoperatively and 180 days postoperatively.

Macular and retinal nerve fiber thickness in recovered and persistent amblyopia.

The aim of this study was to investigate the presence of increased macular or retinal nerve fiber layer thickness (RNFLT) in amblyopic eyes, find if the increased macular or RNFLT is related to the lack of response in amblyopic eyes, and to explore whether the increased central macular thickness (CMT) in amblyopic eyes is purely related to the hyperopia. This is a prospective descriptive study. CMT and peripapillary RNFLT were measured by spectral-domain optical coherence tomography to evaluate 60 patients with unilateral-treated amblyopia (median age 11.