An Investigation of the Photonic Application of TeO-KTeO-NbO-BaF Glass Co-Doped with ErO/HoO and ErO/YbO at 1.54 μm Based on Its Thermal and Luminescence Properties.

A glass composition using TeO-KTeO-NbO-BaF co-doped with ErO/HoO and ErO/YbO was successfully fabricated. Its thermal stability and physical parameters were studied, and luminescence spectroscopy of the fabricated glasses was conducted. The optical band gap, , decreased from 2.

Investigation of Thermal and Spectroscopic Properties of Tellurite-Based Glasses Doped with Rare-Earth Oxides for Infrared Solid-State Lasers.

The thermal and optical properties of 60TeO-20KTeO-10WO-10NbO (in mol%) glasses doped with HoO, ErO, and TmO were explored in the present work. The thermal stability, refractive index n, extinction coefficient k, absorption coefficient α, and optical band gap of the glasses were evaluated. The UV-Vis-NIR absorption spectra, the Judd-Ofelt intensity parameter, the spectroscopic quality factor, and the emission and absorption cross-sections were calculated to investigate the effects of Er and Tm, respectively, on the band spectroscopic properties of Ho ions.

Stabilized voltage source inverter for sensitive loads in nuclear installations.

The present paper proposes a novel design of a stabilized single-phase voltage-source inverter with pure sinusoidal output voltage for photovoltaic systems employed for feeding sensitive loads in nuclear installations. Such types of loads require a voltage source with quite stabilized magnitude and frequency and pure sinusoidal shape that is free from higher-order harmonics. The inverter is based on an H-bridge four insulated gate bipolar transistors (IGBTs) with gate drivers and optocoupler isolators.

Exploring Public Knowledge, Attitudes, and Barriers to Using Genetic Services in Damanhur City and Beni-Suef City, Egypt: A Cross-Sectional Study.

Background: Advancements in genetic disorder management mark a transformative era in healthcare. This study aimed to assess knowledge, attitudes, and barriers to using genetic services among the Egyptian population.

Methods: A cross-sectional study was used to achieve the aim of the study.

Antimicrobial Resistance Patterns in Patients with Vaginal Discharge: A 2019-2022 Analysis at the National Health Laboratory in Eritrea.

Background: Antimicrobial resistance poses a significant global threat to the treatment of bacterial infections, particularly in low- and middle-income regions such as Africa. This study is aimed at analyzing antimicrobial resistance patterns in vaginal swab samples from patients at the National Health Laboratory from 2019 to 2022.

Methods: This retrospective study examined patient records from vaginal swab analyses performed at the National Health Laboratory between January 1, 2019, and December 31, 2022.

The Path From Awareness to Action: Exploring Diabetic Patients' Awareness and Attitudes and Barriers to Utilization of Artificial Pancreas in the Beheira Governorate, Egypt.

Background and objective There is scarce data on diabetic patients' awareness, attitude, and barriers to utilization regarding the artificial pancreas. In light of this, the current study aimed to explore the awareness, attitudes, and perceived barriers to utilization of the artificial pancreas experienced by diabetic patients. Methods A cross-sectional study design was employed to achieve the aim of the study.

Enhanced Emission of Tellurite Glass Doped with Pr/Ho and Their Applications.

The shielding and spectroscopic properties of Pr and Pr/Ho-codoped tellurite glass were investigated. The intensity parameters (Ω2 = 3.24-, Ω4 = 1.

Enhancement of Optical Telecommunication Bands: Pr-Doped Halide Phosphate Glasses Display Broadband NIR Photoluminescence Emission.

In the optical energy gap, visible and near-IR emission of halide phosphate glasses with a composition of 40PO-30ZnO-20LiCl-10BaF in mol% doped with 3.5 × 10 ppm PrO, referred to as PZLBPr, were synthesized. The UV-VIS-NIR and spectroscopic properties of these glasses were also predicted.

Biological Control and Plant Growth Promotion Properties of Volatile Organic Compound-Producing Antagonistic spp.

is environmentally vital due to their plant growth-promoting effects (such as enhancement of nutrients supply, suppression of plant pathogens, and promotion of plant defense). Biogenic volatile organic compounds (VOCs) are diverse chemical substances emitted by spp. The potential role of VOCs in biological control and plant growth promotion has recently been recognized.

Evaluation of the Radiation Shielding Properties of a Tellurite Glass System Modified with Sodium Oxide.

In this study, the X-ray and gamma attenuation characteristics and optical properties of a synthesized tellurite-phosphate-sodium oxide glass system with a composition of (85 - x)TeO-10PO-xNaO mol% (where x = 15, 20, and 25) were evaluated. The glass systems we re fabricated by our research group using quenching melt fabrication. The shielding parameters of as-synthesized systems, such as the mass attenuation coefficient (MAC), linear attenuation coefficient (LAC), effective atomic number (Z), half-value layer (HVL), tenth value layer (TVL), mean free path (MFP), and effective electron density (N) in a wide energy range between 15 keV and 15 MeV, were estimated using well-known PHY-X/PSD software and recently developed MIKE software.

Thermal Stability, Optical Properties, and Gamma Shielding Properties of Tellurite Glass Modified with Potassium Chloride.

The synthesized glass system with a composition of (80-x) TeO2-10P2O5-10Nb2O5-xKCl mol% (where x = 5, 10, 15, 20, and 25) was successfully fabricated. The density (ρ) and molar volume (Vm) have been calculated. The investigated glasses were characterized using different analysis methods (differential thermal analysis (DTA) and UV-VIS-NIR spectroscopy).

The Effect of ZnO, MgO, TiO, and NaO Modifiers on the Physical, Optical, and Radiation Shielding Properties of a TeTaNb Glass System.

Novel glass samples with the composition 75TeO-5TaO-15NbO-5x (where x = ZnO, MgO, TiO, or NaO) in mole percent were prepared. The physical, optical, and gamma radiation shielding properties of the glass samples were studied over a wide energy spectrum ranging between 0.015 and 20 MeV.

Optical and radiation shielding characteristics of tellurite glass doped with different rare-earth oxides.

Shielding glass materials doped with heavy metal oxides show an improvement in the effectiveness of the materials used in radiation shielding. In this work, the photon shielding parameters of six tellurite glass systems doped with several metal oxides namely, 70TeO2-10P2O5- 10ZnO- 5.0PbF2- 0.

GABA transaminase deficiency. Case report and literature review.

GABA transaminase deficiency should be considered in the differential diagnosis of early onset epileptic encephalopathies. This case was diagnosed post-mortem, but increased vigilance to this will allow for earlier diagnoses in other infants and families. This is a case study which involved diagnosis of a rare neurometabolic disorder in one of the babies in the family and eventual genetic counselling of the family.

Optically transparent glass modified with metal oxides for X-rays and gamma rays shielding material.

Background: Metal oxide glass composites have attracted huge interest as promising shielding materials to replace toxic, heavy, and costly conventional shielding materials.

Objective: In this work, we evaluate shielding effectiveness of four novel tellurite-based glasses samples doped with oxide metals (namely, A, B, C, and D, which are 75TeO2- 10P2O5- 10ZnO- 5PbF2- 0.24Er2O3 ; 70TeO2- 10P2O5- 10ZnO- 5PbF2 -5MgO- 0.

Development of a computational tool for estimating computed tomography dose parameters.

Background: Computed Tomographic (CT) imaging procedures have been reported as the main source of radiation in diagnostic procedures compared to other modalities. To provide the optimal quality of CT images at the minimum radiation risk to the patient, periodic inspections and calibration tests for CT equipment are required. These tests involve a series of measurements that are time consuming and may require specific skills and highly-trained personnel.

Radiologists' Knowledge and Attitudes towards CT Radiation Dose and Exposure in Saudi Arabia-A Survey Study.

Computed tomography (CT) is a key imaging technique in diagnostic radiology, providing highly sensitive and specific information. While its use has increased dramatically in recent years, the quantity and associated risks of radiation from CT scans present major challenges, particularly in paediatrics. The fundamental principles of radiation protection require that radiation quantities be as low as reasonably achievable and CT use must be justified, particularly for paediatric patients.

Expression of SidD gene and physiological characterization of the rhizosphere plant growth-promoting yeasts.

There is increasing evidence that rhizosphere microbes contribute to the stress mitigation process, but the mechanisms of this plant-microbe interaction are not yet understood. Siderophores-producing microorganisms have been considered important for enhancing metal tolerance in plants. In this study, rhizosphere yeasts were isolated from wheat ( L.

Effect of Rosemary Essential Oil and VOCs on Pathogenic Fungi Responsible for Ginseng Root-rot Disease.

Rosemary essential oil was evaluated for antifungal potentiality against six major ginseng pathogens: , , , , , and . The in vitro fungicidal effects of two commonly used fungicides, namely mancozeb and fenhexamid, and the volatile organic compounds (VOCs) of T-403 on the mycelial growth were investigated. The results showed that rosemary essential oil is active against all of the pathogenic strains of ginseng root rot, whereas rosemary oil displayed high ability to inhibit the spp.

Plant Growth-Promoting Rhizobacteria Improved Salinity Tolerance of and .

Salinity stress is an important environmental problem that adversely affects crop production by reducing plant growth. The impacts of rhizobacterial strains to alleviate salinity stress on the germination of and seeds were assessed using different concentrations of NaCl. Plant growth-promoting rhizobacteria (PGPR) strains were also examined to improve the early germination of Chinese cabbage seeds under normal conditions.

Report of a case of Raine syndrome and literature review.

We report on a case of Raine syndrome with a mutation in FAM20C and typical phenotypic features consisting of midface hypoplasia, hypoplastic nose, choanal atresia, wide fontanelle, exophthalmos, generalized osteosclerosis and intracranial calcification. New features in our patient are cerebellar hypoplasia and pachygyria. We review the literature and conclude that the triad of hypoplastic nose, exophthalmos and generalized osteosclerosis and/or intracranial calcification is consistent in all molecularly confirmed cases.

Infants of diabetic mothers. A cohort study.

Objective: To determine the outcome of infants born to diabetic mothers at Security Forces Hospital, Riyadh, Saudi Arabia, and compare the complications seen in these infants with infants of non-diabetic mothers.

Methods: This is a concurrent prospective cohort study of a population of newborn infants delivered at Security Forces Hospital, Riyadh, Saudi Arabia for diabetic mothers between January 2011 and November 2011.

Results: A total of 601 infants were enrolled in the study consisting of 319 infants of non-diabetic mothers, and 282 infants of diabetic mothers.

Potential of siderophore production by bacteria isolated from heavy metal: polluted and rhizosphere soils.

Recently, heavy metals have been shown to have a stimulating effect on siderophore biosynthesis in various bacteria. In addition, several studies have found that siderophore production is greater in bacteria isolated from soil near plant roots. The aim of this study was to compare the production of siderophores by bacterial strains isolated from heavy metal-contaminated and uncontaminated soils.

Study of the cytokine polymorphisms in correlation to rejection and graft survival in renal allograft donors and recipients from a homogenous Saudi population.

Objectives: Allograft outcome can be improved with the discovery of risk factors that influence adverse events and may allow individualization of patients' treatment. Rejection is the main hurdle to successful transplantation and the immune response is the key effecter to rejection development. Hence, the major objective of the present study was to assess the relationship between single nucleotide polymorphisms (SNPs) in 5 cytokine genes, HLA mismatch and graft outcome in a cohort of 100 Saudi kidney transplant recipients and 100 living related donors at a single transplant center.