ABSTRACT This study aimed to investigate the effect of the number of control points (CPs) on the plan quality, plan delivery efficiency, and gamma passing rate (GPR) of intensity-modulated radiotherapy (IMRT) for nasopharyngeal carcinoma (NPC). Twenty patients with NPC were selected. With all other optimization conditions unchanged, only the number of CPs in each field was changed and optimized to

ABSTRACT Hexavalent chromium (VI) is a potent carcinogen for humans, while trivalent chromium (III) is an important element in glucose metabolism. In atmospheric water droplets, oxidation of Cr(III) to Cr(VI) by free radicals is a major environmental issue. Laboratory simulation studies of the aqueous phase oxidation-reduction of the couple Cr(III)/Cr(VI) by OH• and HO2•/O2•− by applying conductometric

ABSTRACT Globally, exposure to high levels of radon gas is a known health risk. Granite commonly contains high concentrations of uranium and subsequently high exhalation of radon gas. In the Saldanha Bay area of South Africa, granites dominate the underlying geology as well as the surface characteristics of the area. This implies that elevated levels of radon gas may exist in houses in the area. However

ABSTRACT Aim: To report outcome, toxicity, and survival of reirradition with hypofractionated radiotherapy concurrently temozolamide which is a novel approach to recurrent high- and low-grade glioma patients.Material and Methods: Twenty patients (8 males and 12 females; age between 26 and 70 years) with reccurent gliomas treated in our clinic were included in our study. The primary pathology was low

ABSTRACT Bronchial Asthma is outlined as a chronic irritation of the airways in children. Vitamin D is a real immune system regulator which has a potential part in allergy. Asymmetric Dimethyl Arginine (ADMA) is an endogenic Nitric Oxide Synthase (NOS) inhibitor. This study is to determine if there is a role of vitamin D deficiency, ADMA in the pathogenesis of asthma in children, And whether the decreased

ABSTRACT Islanding condition means the case of feeding the loads from any distributed generator (DG) with a complete disconnection of the utility grid at the point of common coupling. The main technical issue in DG integration with the primary grid is the islanding condition. Hence, islanding must be detected using an appropriate anti-islanding technique which is needed to be faster in terms of time

ABSTRACT The pressure control in the pressurized water reactor (PWR) primary loop is key to secure the safe operation. The pressurizer (PZR) unit is responsible for attaining this task. Thus, the PZR unit’s modeling is an important issue for the tracking control purpose and performance analysis concerning the turbine load. This paper develops a mathematical model to accurately predict the PZR unit

ABSTRACT The X-rays were examined, which consist of the effect of 6 MeV energized electrons on different thickness and material of targets, using the MC method. When the PDDs are examined, we can see that the curves obtained for the Target 4 and Target 8 containing only tungsten material are very close PDD values to each other. The highest TPR20,10 value was also obtained for Target 8. For Target 4

ABSTRACT In 2009, the King Abdulaziz City for Science and Technology (KACST) launched a project involving the establishment of the first radiation detector laboratory in Saudi Arabia. This project aims to design, develop, and operate several multi-purpose radiation detectorsdetectors, as well as to establish collaboration with international institutions to facilitate the transfer of technological knowledge

ABSTRACT Radiological examinations have played a crucial role in the identification and management of COVID-19 patients. Therefore, knowledge and awareness of infection control among healthcare workers in radiology departments are important to prevent disease transmission. This study aimed to assess the knowledge and practice of infection control for COVID-19 among healthcare workers in radiology departments

ABSTRACT This study portrays the relationship between Radon activity concentration and physicochemical parameters in groundwater in Erbil city, Iraq. Primary data of groundwater samples were collected from five different zones in Erbil, during February 2019. Water samples were collected for both Radon measurement and physicochemical analysis. Water samples were taken from 24 different wells as a reference

ABSTRACT Mineral resources exploration in the Kingdom of Saudi Arabia became an important target for the Saudi government. Nowadays, the economic vision of the country is to move away from oil-based country to multisource energy-based country. In Baljurashi area there were ancient mines for Copper, Cobalt, Magnesium, Zircon, and some other minerals. In the current study, we aim to evaluate the Baljurashi

ABSTRACT The water phantom is used as a standard device for the calibration of measuring instruments used in radiation therapy. To carry out this calibration, it is essential to characterize the distribution of the percent depth dose (PDD) along the central reference axis, since this is where the instruments to be calibrated are located. The PDD depends on some magnitudes, such as the size of the field

ABSTRACT This study was to evaluate the effects of microwave device in melanin pigment staining procedures and to compare between the classical Masson-Fontana staining technique at room temperature and the Microwave technique with Masson-Fontana stain. A total of 50 skin tissue samples were taken for processing. After processing, two histochemical staining techniques were carried out; the classical

ABSTRACT The focus of the staged work was radiolabelled 5,7,3ʹ, 4ʹ tetra-hydroxy flavone (Luteolin), isolated from Plantago lanceolata L., (F. Plantaginaceae), with 99mtechnetium (99mTc) to produce a natural tracer 99mTc-Luteolin (99mTc-Lut), and to evaluate the biological distribution in silico and in vivo. Labeling was carried out by reduction reaction using SnCl2 as reducing agent giving a maximum

ABSTRACT Bambara groundnut is a highly nutritious underutilized legume with enormous potential to sustain food security in resource-poor countries. However, its potential for improvement through conventional breeding (< 2% success rate) limitation due to the nature of the flowers. Thus, the most viable method of improving this crop is by creating genetic variability through induced mutagenesis. The

ABSTRACT Cesium radioisotopes are among the majors that are presented in liquid radioactive waste causing long-term environmental threats. The mandatory treatment of these streams is regenerative goal in which adsorption techniques are focal. Calcium alginate/graphene-sodium dodycyl sulfate (CA/GR-SDS) nanocomposite beads were synthesized/characterized and their sorption properties toward Cs+ were

ABSTRACT This study aims to evaluate the dose accuracy of synthetic CT based bulk relative electron density (rED) assignment for application in 1.5 T MR-Linac for cervical carcinoma patients. Five cervix patients previously treated on 1.5 T MR-Linac were retrospectively investigated. Two sCTs were generated assigning bulk values to the different bone regions: the sCTFH was generated with delineation

ABSTRACT The concentration and spatial distribution of three naturally occurring radionuclides, 238U, 232Th and 40K, has been determined in stream sediments from six left side tributaries of Bistricioara river (Bistriței Mountains, Eastern Carpathians, Romania). Historically, several mining works were undertaken in the area, with a view of exploring its’ potential regarding mineral resources. The aim

ABSTRACT Agrobacterium tumefaciens mediated transformation is a major tool in plant biotechnology. Catharanthus roseus suspension cultures were inoculated with A. tumefaciens strain carrying β-glucuronidase (gus) gene in presence of either Co2+ or cobalt nanoparticles (CoNPs) at 2.5, 5, 7.5, and 10 mg/L. Co2+ at 2.5 mg/L as well as CoNPs at 2.5, 5, and 7.5 mg/L enhanced expression of gus gene in plant

ABSTRACT The Sterile Insect Technique (SIT) is a method of pest control used in the management of Ceratitis capitata (Medfly). This technique is based on the mating and transfer of ejaculate sperm to the wild female population from released sterile males. This transfer will induce sterility in the female through sperm dominant lethal mutations. Consequently, the factors influencing sperm transfer and

ABSTRACT Mineral resources exploration in the Kingdom of Saudi Arabia became an important target for the Saudi government. Nowadays, the economic vision of the country is to move away from oil-based country to multisource energy-based country. In Baljurashi area there were ancient mines for Copper, Cobalt, Magnesium, Zircon, and some other minerals. In the current study, we aim to evaluate the Baljurashi

ABSTRACT The water phantom is used as a standard device for the calibration of measuring instruments used in radiation therapy. To carry out this calibration, it is essential to characterize the distribution of the percent depth dose (PDD) along the central reference axis, since this is where the instruments to be calibrated are located. The PDD depends on some magnitudes, such as the size of the field

ABSTRACT In this study, the biosynthesis of extracellular silver nanoparticles (AgNPs) was obtained using Pseudomonas aeruginosasupernatant integrated with gamma radiation. The biosynthesis was confirmed by UV-Vis Spectrophotometer. The Atomic Force Microscopy (AFM) recorded the spherical nanoparticle sizes of 10 nm, while the Dynamic Light Scattering (DLS) recorded the size range of 6.7 to 12.1 nm

ABSTRACT Whether calsyntenin 1 (CLSTN1) and serine hydroxymethyltransferase 2 (SHMT2) are sensitive to low-dose ionizing radiation (LDIR) has not yet been defined. Therefore, here, we aimed to investigate changes in gene expression in hepatic cell lines and in blood cells and serum from irradiated mice. Levels of SHMT2 and CLSTN1 were decreased in cancer (HepG2) and normal (HH) hepatocytes exposed

ABSTRACT Whether calsyntenin 1 (CLSTN1) and serine hydroxymethyltransferase 2 (SHMT2) are sensitive to low-dose ionizing radiation (LDIR) has not yet been defined. Therefore, here, we aimed to investigate changes in gene expression in hepatic cell lines and in blood cells and serum from irradiated mice. Levels of SHMT2 and CLSTN1 were decreased in cancer (HepG2) and normal (HH) hepatocytes exposed

ABSTRACT Power quality monitoring and investigation are necessary to maintain perfect and safe operation of sensitive equipment especially for nuclear facilities. In this work, a case study about harmonic analysis of an electrical power system at a Nuclear Research Reactor (NRR) has been done to evaluate the current state from the PQ point of view. Firstly, a study is given separately for different

ABSTRACT Power quality monitoring and investigation are necessary to maintain perfect and safe operation of sensitive equipment especially for nuclear facilities. In this work, a case study about harmonic analysis of an electrical power system at a Nuclear Research Reactor (NRR) has been done to evaluate the current state from the PQ point of view. Firstly, a study is given separately for different

ABSTRACT The Mediterranean fruit fly,Ceratitis capitata (Diptera: Tephritidae), is an important economic pest worldwide causing direct crop damage. One of the most successful control strategies for this pest is the application of the sterile insect technique. However, the deterioration of competitive mating performance against wild males was observed in Vienna8 Genetic Sexing Strain sterile males,

ABSTRACT The Mediterranean fruit fly,Ceratitis capitata (Diptera: Tephritidae), is an important economic pest worldwide causing direct crop damage. One of the most successful control strategies for this pest is the application of the sterile insect technique. However, the deterioration of competitive mating performance against wild males was observed in Vienna8 Genetic Sexing Strain sterile males,

ABSTRACT The attenuation coefficients of cosmic-ray muons through metal plates were theoretically determined. Three methods (A, B, and C) were proposed by the researchers using the experimental data of count rate which was obtained from the detection of cosmic-ray muons through metal plates of different thicknesses. Method A was applied to Pb, Cu, Zn, and Al, whereas Methods B and C were applied to

ABSTRACT Several authors have mentioned calculations of the effective atomic numbers ( Z e f f ) and effective electron density ( N e f f ) on amino acids, carbohydrates, and nucleotides. Recently, numerous studies performed for determination of the mass attenuation coefficient ( μ / ρ ), Z e f f and N e f f on some biological compounds. However, theoretical studies for Z e f f , N e f f , and μ /

ABSTRACT Electrostatic precipitation is a well-known technology to reduce public exposure to radon daughters. A custom electrostatic precipitator (ESP) prototype has been designed and built to study the effectiveness of such a removal technique in specific workplaces having low-to-zero air exchange rates with external environments. An appropriate mathematical model has been set up in order to simulate

ABSTRACT This research was conducted to evaluate scatter distribution at an X-ray room for diagnostic radiography using the Particle and Heavy Ion Transport code System (PHITS). The X-ray room was simulated using PHITS code based on the imaging room distance and length, as well as the control console room. The exact dimensions of the rooms were used as a geometry code in PHITS to simulate a point source

ABSTRACT Differences in biological response of breast and lung cancer cells to 62 MeV/u therapeutic protons and carbon ions are investigated on MCF-7 and HTB177 cells. Hydroxyl radical scavenger, dimethyl sulfoxide (DMSO) is applied to reduce indirect effects of irradiation, while serum deprivation provided uniformity of cell population. Survival, immunocytochemical, and cell-cycle analysis, changes

ABSTRACT Recently, Wireless Sensor Network (WSN) deployments for on-line monitoring of the nuclear practices have been addressed as incremental and experimental networks. The paper examines the performance of IEEE802.15.4/Zigbee based WSN for nuclear medicine practice using OPNET Modeler simulation tool. We introduce a reliable integrated remote sensing solution based on Zigbee technology for nuclear

ABSTRACT This study investigates the effects of nanoparticles entity shapes inside tumor mass on dose distribution and dose enhancement. Gold (     197 A u ) and Platinum (     195 P t ) nanoparticles of four different shapes were used in this study. Each one has different air cavity inside, which in turns affect the scattering probability. However, all of them are spheres and have the same diameter

ABSTRACT Yangjiang bermudagrass is an excellent variety with high turf quality and good stress tolerance; however, the inflorescence density of Yangjiang is too high, which leads to management problems. To lower the inflorescence density of Yangjiang bermudagrass, Yangjiang bermudagrass mutants were generated using gamma-ray irradiation. Forty-two mutants were generated, and identification was performed

ABSTRACT The purpose of this study is to validate GATE 8.1 Radiotherapy Monte Carlo (MC) simulation of a 6 MV Elekta Versa-HD linear accelerator at King Abdulaziz University Hospital (KAUH). The simulation data using GATE 8.1 was benchmarked against measured data at KAUH. The simulation comprises treatment head, Multi-Leaf Collimators (MLCs), and homogeneous water phantom, whereas the measured data

ABSTRACT The nutritive value and in vitro digestibility using the digestive enzyme extracts from different stages of silkworm larvae (Bombyx mori) were evaluated in different leaf positions (1, 2, 3, 4, or 5) of mulberry leaves (Morus spp.) with or without gamma irradiation treatment (native vs. irradiated). At least one of studied factors and their interaction had effects on the overall proximate

ABSTRACT Radon activity concentration in water samples from Perak state Malaysia and their possible health risk was assessed. The Samples were from lakes, hot springs, and rivers. The RAD7 Detector was used for in-situ measurement of radon concentration. The radon activity concentration ranged from 0.04 ± 0.08 — 3.98 ± 0.39 Bq l – 1, with mean of 0.69 Bq l – 1 and standard deviation of 0.92 Bq l –

The high uric acid level in blood can cause gouty arthritis. In the uric acid cycle, purines are converted to uric acid and the process is controlled through series of enzymes, of which, xanthine oxidase (XO) is a key enzyme responsible for the oxidation of xanthine to uric acid. XO has been used as a potential therapeutic target to control uric acid deposition, ultimately preventing gout. Various

Development of materials for radiation shielding application, which are lightweight, flexible, and robust increases in demand for nuclear radiation facilities including industrial or medical applications. In this paper, three metals (lead, gadolinium, bismuth) doped polymeric compounds (poly-acrylonitrile, polyethylene, and kevlar) were simulated by using theoretical and computational model. It was

ABSTRACT The present study reveals the effects of ultraviolet-C on the morphology of the antenna and antennal sensilla of Tribolium castaneum. Pupae were irradiated with UV-C at a distance of 35 cm for 1, 2, 4, 8, 16, 32, or 64 min. The morphometric traits of the antenna and antennal sensilla were determined using light and scanning electron microscopy. UV-C caused abnormalities to the adults’ antennae

Background Existing gated delivery methods adopting predefined intervention thresholds, and better delivery accuracy comes at the expense of lower therapeutic efficiency. So we present a new gating strategy based on trajectory quantification and pattern discrimination.Material and methods: 1265 real-time ultrasound monitoring trajectories of 61 prostate cancer patients were retrospectively analyzed

ABSTRACT Although skin infections are usually uncomplicated, it may indicate systemic disease or lead to life-threatening systemic infections. Staphylococcus aureus is the most common cause of skin infections. Treatment is complicated by continuous emergence of resistant S. aureus especially methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant S. aureus (VRSA). Therefore, searching

ABSTRACT Radiation safety has become more important issue due to increased use of ionizing radiation in diagnosis and treatment. The aim of this study is to investigate the awareness and knowledge level concerning radiation safety among healthcare professionals who work in a radiation environment. The study population consisted of healthcare professionals who work in a radiation environment at a state

ABSTRACT This study aimed to develop an automated delineation method of nasopharynx gross tumor volume (GTVnx) for nasopharyngeal carcinoma (NPC) in computed tomography (CT) image for radiotherapy applications. Inspired by ResNet and SENet’s strong ability to extract image features, we proposed a modified version of the 3D U-Net model with Res-blocks and SE-block for delineation of GTVnx. Besides,

ABSTRACT Astaxanthin is a carotenoid pigment that is increasingly used as an antioxidant supplement in healthy regimes. Shrimp processing wastes causing diverse environmental problems are considered the cheapest raw materials for recovering astaxanthin. The present study aims to recover astaxanthin using two green technologies; lactic fermentation and edible oil extraction and compare the efficiency

ABSTRACT This study attempts a nuclear forensic characterization of uranium in soil samples from a prospective Serule mine in Botswana. The analysis involves the determination of forensic signatures found in uranium-bearing materials from the mine. These signatures include 232Th activity concentration, isotopic and activity ratios of 232Th/238U and 235U/238U, impurity concentration, rare earth elements

ABSTRACT The paper herein is intended to present the registration efficiency of 300A alpha-scintillation active cell and its application in the field of soil radon detection. In this work, a radon chamber based on a natural radon source has been constructed. This chamber allows calibration of the active scintillation cell under flow-through condition. Radon source has been designed, constructed, and

ABSTRACT Background Type 2 diabetes mellitus (T2DM) is an international health concern. The C-X-C chemokine ligand 16 (CXCL16) functions as a scavenging cell surface receptor. Vitamin D3 has vital effects on inflammation and insulin homeostasis. Purpose To investigate the significance of serum CXCL 16 and vitamin D3 in T2DM patients to understand disease pathophysiology. Materials and Methods The current

ABSTRACT This study revealed effect of UV-A on the vincristine accumulation and peroxidase isozymes changes in the Catharanthus roseus plantlets and relationship between them. Effect of the UV-A on the C. roseus plantlets survivor was largely because the plantlets (two weeks age) died after irradiation by UV-A more than 30 minutes. The electrophoretic patterns of peroxidase isozymes extracted from

ABSTRACT Arsenic is a toxic substance that causes tissue damage. It is well-known that exposure to this substance induces oxidative stress and causes liver injury. The present study has been conducted to evaluate the protective role of raw or irradiated basil against arsenic-induced liver damage. Basil leaves were irradiated at a dose of 10 kGy by cobalt-60 gamma rays. Forty-eight female albino rats

ABSTRACT Trichinellosis is a food-borne disease caused by the ingestion of meat infected with Trichinella spiralis encysted larvae. To interrupt the circle between human and animals, proper immunization and treatment of animals are needed. This study aimed to compare the impact of vaccination with gamma radiation-attenuated larvae with anti-helminthes activity of Punica granatum on its control. Sixty

ABSTRACT The toxins generated by waste dyes from several industrial sectors in water bodies are hard to evacuate by ordinary water treatment procedures. This study discusses the effect of silver nanoparticles (AgNPs) biosynthesized by Pseudomonas aeruginosa on the degradation of some hazardous dyes such as Bromothymol blue and Fantacell dye. The catalytic properties of the Sodium Alginate/Poly Acrylamide

ABSTRACT The role of spirulina against brain tissue injury induced by 4 Gy whole body γ-irradiation was studied. Thirty male albino whistler rats were divided into five groups: control (C), spirulina (Sp) 400 mg/kg orally administrated for 2 weeks, irradiated (4 Gy), (Sp+4 Gy), and (4 Gy+Sp). About 24 h posttreatment, fresh brain white matter was extracted from the animal and directly measured by Fourier

ABSTRACT Estrogen has a significant role in regulating cell proliferation, growth, migration, aging, and many disease states. Estrogen shows its effects through estrogen receptors alpha, beta, and G protein-coupled estrogen receptor 1 (GPER1). The aim of this study is to evaluate serum GPER1 levels and its relationship with fibrosis score in chronic hepatitis B patients. The cases were selected from

ABSTRACT Bones are mainly composite materials of equivalent volume fractions of mineral (apatite) and organic (collagen) parts. Their infrared spectroscopic characteristics mirror their composition. Bone diagenesis is the post-depositional changes of calcified tissues by chemical degradation. It is a complicated process and affected by numerous external and individual factors. Diagenetic trajectories

ABSTRACT This study was conducted to assess Saudi obstetricians’ knowledge and awareness of the risks of ionizing radiation. Following a cross-sectional study design, 130 obstetricians in Saudi Arabia were included. A study questionnaire was designed and developed by the researcher. Most participants (69.2%) did not undergo training on radiation risk, while their activities related to radiation risk