Publications by authors named "Mostafa A Ahmed"

Industrial wastewater treatment using UV irradiation in combination with oxidants or catalysts (TiO) has attracted attention as a promising substitute for conventional methods. Studying the preparation and characterization of TiO-SnO nanocomposites with different ratios, as well as their use in the enhanced photocatalytic degradation of acid red 37 dye in aqueous solution under UV irradiation as a model pollutant, are the goals of the research. The crystalline structures of the prepared nanomaterials were confirmed by XRD and the surface morphology of the samples was studied by TEM.

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Hypertension is a leading cause of cardiovascular mortality, often accompanied by complications such as arrhythmia and stroke. This silent killer requires a multifaceted pharmacological approach for effective management. This article presents new, environmentally friendly spectrophotometric methods for simultaneous quantification of telmisartan (TER) and metoprolol succinate (MTR) in laboratory prepared mixtures and pharmaceutical formulations.

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Background: Intrastromal corneal ring segments are commonly implanted in the corneas of eyes with mild-to-moderate keratoconus; however, changes in corneal densitometry (CD) after implantation are a matter of debate in the current literature. We evaluated the changes in CD 1 and 3 months after femtosecond laser-assisted Keraring implantation.

Methods: This retrospective, non-comparative, multicenter, case series study included patients with keratoconus who underwent femtosecond laser-assisted implantation of double segments with 90° and 160° arc lengths or two 160° arc length Keraring segments.

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Purpose: To assess the frequency and the predictive factors of Acute Kidney injury (AKI) in patients undergoing percutaneous nephrolithotomy (PNL).

Methods: A prospective observational work. Demographic, preoperative laboratory data, stone characteristics, and intraoperative and postoperative data were gathered.

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Background: Several reports showed that sexual function was affected during and after the COVID-19 pandemic.

Aims: The objective of the study was to demonstrate whether a realistic association exists between the COVID-19 pandemic and erectile dysfunction (ED) among a sampled Egyptian population in Damietta governorate.

Methods: This cross-sectional study consisted of 330 adult males diagnosed with COVID-19 infection.

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Cardiovascular diseases, in particular hypertension and hypercholesterolemia, are two of the main causes of death worldwide. These conditions are silent killer syndromes that need a variety of pharmacological treatments to be effectively controlled. This study introduces novel, environmentally friendly spectrophotometric techniques for the simultaneous determination of telmisartan (TMS) and rosuvastatin calcium (RVS) in their pharmaceutical dosage forms.

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Simultaneous measurement of saxagliptin hydrochloride (SAG) and dapagliflozin propanediol monohydrate (DAG) in bulk powder, laboratory-prepared mixtures, and pharmaceutical dosage form were applied by utilizing three precise and sensitive spectrophotometric techniques which were developed and validated. The first method was the induced dual-wavelength approach (IDW), which relied primarily on the use of alternative equality factors (F) to abolish the effect of DAG when determining SAG and vice versa. The ratio difference method (RDM) was the second method, which used 25 μg/ml of DAG and 20 μg/ml of SAG as divisors to determine the amplitude difference on the ratio spectrum of SAG and DAG, respectively.

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Introduction: Local data in Saudi Arabia regarding pediatric SARS-CoV-2 infection is limited. This study is aimed at adding insight regarding the effect of the novel coronavirus on pediatric patients by studying the presentation, laboratory parameters, and disposition of SARS-CoV-2-infected pediatric patients in one center in Jeddah, Saudi Arabia. .

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To compare between low dose vaginal misoprostol with and without Foley catheter for late second trimester pregnancy termination in women with previous multiple cesarean sections. A prospective randomized controlled clinical trial, patients were randomly allocated to either low dose vaginal misoprostol group ( = 40) or combined low dose vaginal misoprostol plus Foley catheter group ( = 38). The primary outcome was complete abortion.

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Objective: This study aimed to evaluate the efficacy of unilateral laparoscopic ovarian drilling versus bilateral laparoscopic ovarian drilling with thermal dose adjusted according to ovarian volume in clomiphene citrate (CC)-resistant PCOS patients in terms of endocrine changes, menstrual cycle resumption, ovulation and pregnancy rates.

Patients And Methods: This study was conducted in the Department of Obstetrics and Gynecology, Zagazig university hospitals. One hundred CC-resistant PCOS patients were divided into two groups.

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This study evaluated the efficacy of rifaximin versus lactulose in the treatment of hepatic encephalopathy (HE). The study population included 50 patients who were diagnosed to have signs of the first to third degree HE, according to the West Haven criteria and classified into two groups. GI: included 25 patients who had HE and were treated with lactulose syrup (laxolac) 90 ml daily divided into 3 doses for 7 days.

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