One of the important factors controlling distribution radiation dose to different portions human respiratory tract is deposition pattern radon progeny containing aerosol. Based on activity size parameters progeny, which were measured in Minia University, behavior (attached and unattached) has been studied by using a stochastic model. The attached fraction was collected low pressure Berner cascade impactor technique. A screen diffusion battery used for collecting unattached fraction. Most...

Total deposition of petrol, diesel and environmental tobacco smoke (ETS) aerosols in the human respiratory tract for nasal breathing conditions was computed 14 nonsmoking volunteers, considering specific anatomical parameters each volunteer size distribution inhalation experiment.Theoretical predictions were 34.6% 24.0% diesel, 18.5% ETS particles.Compared to experimental results, predicted values consistently smaller than measured data (41.4% 29.6% 36.2% particles).The apparent discrepancy...

Abstract Iron deficiency anemia (IDA) is a common health issue, and researchers are interested in overcoming it. Nanotechnology green synthesis one of the recent approaches to making efficient drugs. In this study, we modeled curcumin-coated iron oxide nanoparticles (cur-IONPs) study their predicted toxicity drug-likeness properties, then investigate mucoadhesive behavior by docking cur-IONPs with two main mucin proteins gastrointestinal tract (GIT) mucosa (muc 5AC muc 2). Furthermore,...

Penetration probabilities of inhaled man-made mineral fibers to reach central human airways were computed by a stochastic lung deposition model for different flow rates and equivalent diameters. Results indicate that even thick long can penetrate into the at low rates. Deposition efficiencies localized patterns then with variable lengths in three-dimensional physiologically realistic bifurcation computational fluid dynamics (CFD) techniques characteristic breathing patterns. The results...

The objective of this study is the prediction and comparison airway deposition patterns an industrial aerosol in healthy workers suffering from silicosis. Mass concentrations related size distributions particulate matter were measured area Samalut Minia, Egypt. A novel stochastic lung model, simulating symptoms silicosis by chronic bronchial (Br) obstruction emphysema acinar (Ac) region, was applied to compute mass fractions, density, rate density diseased workers. In case workers, both...

Outdoor aerosol particles were characterized in industrial area of Samalut city (El-minia/Egypt) using low pressure Berner cascade impactor as an sampler. The operates at 1.7 m(3)/h flow rate. Seven elements investigated including Ca, Ba, Fe, K, Cu, Mn and Pb atomic absorption technique. mean mass concentrations the ranged from 0.42 ng/m(3) (for Ba) to 89.62 Fe). size distributions bi-modal log normal distribution corresponding accumulation coarse modes. enrichment factors indicate that Cu...

Different measurements of equilibrium equivalent concentration radon progeny (EEC Rn ) were obtained over a period one year in indoor air Physics Department at Minia University, located the Upper Egypt. A method based on an alpha spectroscopy was used. Sartorius membrane filters (1.2 μm pore size, 25 mm diameter and its efficiency about 100%) used as collection media. Alpha activities measured during after sampling by using surface barrier detector. EEC varied between 1.26 19 Bq m -3 with...

The activity particle size distribution is an important factor governing if the aerosols can be deposited at various respiratory tract regions in human. Radon decay products are second cause of lung cancer after smoking. A lot dosimetric models have been built to calculate effective dose and depth different region tissues human system. deposition fraction estimation first step calculation. Therefore, dependence radioactive system on their should studied. In this work, distributions 222Rn...

Air quality of public buildings is an important to assess human health. School and university represent category indoor environments. This study aimed evaluate the concentration size distribution fungal non-biological aerosol particles in classrooms Minia university, Egypt. In addition, inhalable fractions were determined exposure dose (IED) fungi aerosols estimated for students. A six-stage Andersen impactor was used collecting Berner cascade sampling particles. average 307±102 CFU/m3. The...

Monosodium glutamate (MSG) is a flavor enhancer and food additive with unique umami taste. Due to its widespread use in humans, this study focused on the cytotoxicity, anti-diabetic effect, interaction protein digestion by performing standardized static vitro model lipid estimating free fatty acids released from 0.5 g of olive oil during intestinal lipolysis. The showed that monosodium has an apparent cytotoxic effect Caco-2 cell line dose-dependent manner. MSG also low inhibitory activity...

Background: Myopia is one of the common refractive error. Optical Coherence Tomography Angiography (OCTA) a non-invasive investigation microvasculature retina. Aim: To evaluate OCTA study FAZ area and vascular density (VD) at superficial capillary plexus (SCP), deep (DCP) choriocapillaris (CC) in myopic patients versus healthy controls their correlations to axial length (AL), best corrected visual acuity (BCVA) spherical equivalent (SE). Setting Design: Prospective cross-sectional...

Air quality of public buildings is an important issue to assess human health.School and university represent category indoor environments.This study aims at evaluating the concentration size distribution fungal non-biological aerosol particles in classrooms Minia University, Egypt.In addition, inhalable fractions were determined exposure dose (IED) fungi aerosols estimated for students.A six-stage Andersen impactor was used collecting Berner cascade sampling particles.Indoor average 307±102...

Natural radioactivity is a source of continuous exposure to human beings.It originates from both extraterrestrial sources and radioactive elements in the earth crust.Assessment study area very important different point view especially for health.The natural soil samples were measured by Gamma spectrometry using 3ʺ×3ʺ NaI (Tl) well detector.Cultivated collected eight regions El-Minia governorate including; Maghagha, BaniMazar, Mattay, Samallot, El-Minya, Abo Qurqas, Mallawy, Deir Mawas...

Outdoor aerosol particles were characterized in industrial area of Samalut city (El-Minia/Egypt) using low pressure Berner cascade impactor as an sampler.The operates at 1.7 m 3 /h flow rate.Seven elements investigated including Ca, Ba, Fe, K, Cu, Mn and Pb atomic absorption technique.The mean mass concentrations the ranged from 0.42 ng/m (for Ba) to 89.62 Fe).The size distributions bi-modal log normal distribution corresponding accumulation coarse modes.