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  Subjects -> SCIENCES: COMPREHENSIVE WORKS (Total: 426 journals)
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International Journal of Computational and Experimental Science and Engineering (IJCESEN)
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Online) 2149-9144
Published by DergiPark Homepage  [187 journals]
  • Estimating the Concentrations of Natural Isotopes of 238 U and 232Th and
           Radiation Dose Rates for Wasit Province-Iraq by Gr-460 system

    • Authors: Ahmed ZARKOOSHİ; Kamal Hussein LATIF, Fadhil HAWI
      Abstract: This paper includes the measurement of the concentrations of natural radioactive isotopes of 238U, 232Th, and radiation dose rates for selected areas of Wasit province.GR-460 system has been used for the radiological survey operations, it is a portable system, installed inside a minibus and inside the system, there is a Sodium Iodide Detector (NaI), that has the ability to measure the concentrations of natural radioactive isotopes in (ppm) unit and measure the radiation dose rates in µR/h unit. The measurement results showed the absence of any significant increase in the 238U and 232Th concentration where the concentration of isotopes 238U and 232Th, were 3.35 and 5.46 ppm respectively, it is authorized and acceptable. The values of radiation dose rates ranged between 45-65 ոSv/հ, and all these values are within the natural radiation background. Eleven radioactive sources type 226Ra have been detected beside destroyed industrial facility because of the war 2003 they had been used in the lightning arresters technology in the last regime. These sources treated and placed in armored containers and taken to the Iraqi main store (Iraqi Organization of Atomic Energy Site), the radiation dose measurements ranged between 72- 48 µR/h, which is higher than the natural radiation background.
      PubDate: Tue, 30 Nov 2021 00:00:00 +030
       
  • Design and Manufacture of a Centrifugal Water Pump with a Circular Casing

    • Authors: Francis INEGBEDİON; Chidiebele Nnadike OKONKWO, Joseph Okechukwu NDIFE
      Abstract: A pump is a machine that imparts mechanical energy to a fluid flowing through it, to move it from one point to another. This paper reports the design, manufacture and testing of a centrifugal water pump having a circular casing. A single stage, end suction centrifugal pump designed and manufactured, using locally sourced materials. This pump finds application in homes, agriculture and industries. It consists of an impeller, shaft, suction and delivery pipes and an electric motor. Experiments performed with this pump shows that it can deliver 0.0045m3 of water per second with a pressure head of 34.7m. A 2.5kW electric motor running at a speed of 2900rpm was used to drive the pump.
      PubDate: Tue, 30 Nov 2021 00:00:00 +030
       
  • The Prediction of Chiral Metamaterial Resonance using Convolutional Neural
           Networks and Conventional Machine Learning Algorithms

    • Authors: Aybike URAL; Zeynep Hilal KİLİMCİ
      Abstract: Electromagnetic resonance is the most important distinguishing property of metamaterials to examine many unusual phenomena. The resonant response of metamaterials can depend many parameters such as geometry, incident wave polarization. The estimation and the design of the unit cells can be challenging for the required application. The research on resonant behavior can yield promising applications. We investigate the resonance frequency of the chiral resonator as a unit of chiral metamaterial employing both traditional machine learning algorithms and convolutional deep neural networks. To our knowledge, this is the very first attempt on chiral metamaterials in that comparing the impact of various machine learning algorithms and deep learning model. The effect of geometrical parameters of the chiral resonator on the resonance frequency is studied. For this purpose, convolutional neural networks, support vector machines, naive Bayes, decision trees, random forests are employed for classification of resonance frequency. Extensive experiments are performed by varying training set percentages, epoch sizes, and data sets.
      PubDate: Tue, 30 Nov 2021 00:00:00 +030
       
  • Health Services Vocational School Students' Opinions About Smartphone
           Usage and The Relationship Between Internet Addiction

    • Authors: Arslan SAY; Demet ÇAKIR
      Abstract: Purpose: In this research, it was aimed to determine the students' smartphone and internet addiction levels and related factors. Method: The universe of the research consists of 825 students studying at the Vocational School of Health Services of a university in the 2015-2016 academic year. Of the 825 students, 668 students who agreed to participate in the research constituted the sample of the study. The data of this research were collected with Internet and Smartphone Usage Information Form, Internet Addiction Scale (IAS), and Smartphone Addiction Scale-Short Form (SASF).Results: The average age of the students is 20.2±1.12, and 44.3% (n=298) of them mostly connect to the internet from home. The mean scores obtained from the scales were 38.41±16.26 in IAS and 28.09±11.93 in SASF. A significant difference was determined between IAS and gender, monthly expenditure, daily and weekly internet use, and purpose of using the internet (p
      PubDate: Tue, 30 Nov 2021 00:00:00 +030
       
  • Immunological parameters examination of the oral fluid in normal and
           pathological conditions: sensitivity analysis of microorganisms in modern
           therapeutic practice in vitro

    • Authors: Abdulrazaq Mohammad SABAH; Ikonnikova NATALIYA
      Abstract: Inflammation of the mucosal immune system is a common occurrence (saliva). The masticatory process and salivary enzymes destroy antigenic material that enters the mouth cavity, yet it can still activate immunological responses. Many soluble components are secreted by epithelial cells or incorporated into oral cavity fluids. Defensins, histatins, lysozyme, and lactoferrin all have antibacterial action. They appear to work synergistically with secretory IgA. The objectives of this study is to examine the immunological parameters (concentration of total IgA and secretory IgA) of the oral fluid of the examined individuals in normal and pathological conditions; and to identify the sensitivity/resistance of microorganisms-the main representatives of the oral microflora to antimicrobial drugs widely used in modern therapeutic practice (antibiotics) in vitro. To achieve the study's goals, 65 individuals aged 18 to 50 were evaluated. To measure secretory IgA in oral fluid, we used a solid-phase immunoassay and a ZAO Vector Best sIgA ELISA BEST strip. The "secretory IgA-ELISA" reagent collection is designed to quantify secretory IgA in body fluids using enzyme-linked immunosorbent assay. The enzyme-linked immunosorbent assay measures secretory IgA. The t-test was used to assess the significance of differences across indicator groups. Results indicated that amount of total IgA in oral fluid is significantly lower in people with dental and periodontal problems than in people who are healthy. This indicates a decrease in oral cavity resistance and an increase in carious/periodontal processes. Caries and/or periodontal disease have been linked to lgA deficiency. The results showed that staphylococci and streptococci dominated the oral cavity microbiota in the comparison groups. In addition to this, Neisseria and Veillonella were found. Streptococci accounted for 57 percent of all microorganisms planted in this biotope. Enterobacteria accounted for up to 15%, whereas Neisseria accounted for about 4% and 2%. The decrease in sIgA levels in periodontitis patients' saliva indicates a lack of local mucous membrane protection, increasing the risk of caries and periodontitis. The lower sIgA levels in the mouth make tooth tissue more susceptible to caries-causing microbe adherence than in healthy people.
      PubDate: Tue, 30 Nov 2021 00:00:00 +030
       
  • Fast Neutrons Shielding Properties for HAP-Fe2O3 Composite Materials

    • Authors: Roya BOODAGHİ MALİDARRE; İskender AKKURT, Kadir GUNOGLU, Hakan AKYILDIRIM
      Abstract: Neutron has been one of the most interesting particle since its discovery. Being an uncharged particle it is more difficult to shield in comparison with the other radiation types. This may be due to the differences of its interaction with matter. The main interaction processes of neutron with a matter may be via (n,p) reaction and thus hydrogenous materials are generally preferred to shield neutron. In this study neutron shielding properties for HAP composites have been investigated. This is done using Phy-X/PSD software.
      PubDate: Tue, 30 Nov 2021 00:00:00 +030
       
  • Modeling of global solar radiation in Algeria based on geographical and
           all climatic parameters

    • Authors: Fetah SABAH; Mohamed SALMİ
      Abstract: The design of photovoltaic or solar systems and estimating their performance require knowledge of the intensity of solar radiation. The measurement of this parameter for some sites in Algeria is unfortunately not obvious. However, researchers are moving towards the modeling, estimation and prediction. To model the global solar radiation in Algeria, we must take into account the geographical and climatic parameters such as sunshine duration, relative humidity, temperature, latitude site, etc... In this study, the modeling of daily global solar radiation on a horizontal plane according to the parameters mentioned above is based on the statistical linear regression technique. The daily data used in the development and validation of models are extracted from the database of O. N. M (National Office of Meteorology, Dar el Beida. Algeria) for 2001-2005. We test the proposed models on two sites such as Djelfa and Ain-Bessam. For each site, validity and performance of the model will be studied based on the number of parameters introduced in the analytical expressions and results are discussed in terms of statistical errors as: R, MBE and RMSE between the measured global solar radiation and global solar radiation estimated. It was found that air temperature and relative humidity are indeed important climatic parameters for the prediction of solar radiation.
      PubDate: Tue, 30 Nov 2021 00:00:00 +030
       
  • Effect of Rosuvastatin on Fasting and Postprandial Lipid Profile in
           Hypertriglyceridemia Patients

    • Authors: Abdulkadir ÇAKMAK
      Abstract: : Background: Coronary heart disease (CHD) is a main cause of mortality due to cardiovascular diseases. Hypertriglyceridemia (HTG) is a multifactorial condition implicated in the pathogenesis of CHD. Serum triglyceride (TG) levels were routinely obtained under fasting conditions; however, recent evidences implicate that postprandial triglyceride levels may be more important for CHD risk. Aim: Aim of this study was to investigate the effect of rosuvastatin on fasting and postprandial TG levels in the patients with borderline-high TG levels.Methods: 51 patients (18-75 years old; 26 female) with LDL-c between 100 and 160 mg/dL and triglyceride levels between 150 and 300 mg/dL were included in this study. Basal fasting and postprandial lipid profile and hsCRP levels of the patients were obtained and patients were requested to take 10 mg/day rosuvastatin for one month. At the end of one month, the measurements were repeated.Results: Rosuvastatin significantly decreased both fasting and postprandial TG levels compared to basal levels (p
      PubDate: Tue, 30 Nov 2021 00:00:00 +030
       
  • Examination of the composition and microorganisms in the oral microflora
           with to Immunological parameters identification of Saliva

    • Authors: Abdulrazaq Mohammad SABAH; Ikonnikova NATALIYA
      Abstract: The oral mucosa is a mucous membrane that connects the lips to the pharyngeal and gastrointestinal mucosa. Its particular properties enable it to function as a gatekeeper, regulating the impact of inhaled and ingested antigens, and the degrees of inflammation and immunological responses tolerated in a normal healthy mouth cavity. The objectives of this study are to: (1) quantification of the composition of the oral micro flora in individuals of 18-50 years old; (2) examination of the oral cavity microorganisms (culture-morphological and microscopic studies); and (3) determination the biochemical parameters (lysozyme concentration, active acidity level) of the oral fluid (saliva). The research evaluated 65 people between the ages of 18 and 50. Swabs from the oral cavity (within the cheeks) were used to inoculate agar media (MPA, Endo medium). Colonies (CFU) on the agar medium's surface were counted and converted to an area of the oral cavity (4 cm2). The oral fluid was collected in the morning, on an empty stomach, before brushing the teeth, into a sterile test tube with a tight-fitting cover. This was done by thoroughly cleaning the individual's mouth with a sterile 0.9% NaCl solution. We used indicator strips of paper with pH ranges of 5.4–7.8, 0.2 steps. Oral fluid centrifuged (2000 rpm for 20 min). Indicator paper was dropped over the supernatant and the pH was calculated using a standard scale. Saliva from patients was collected in 1 ml polyethylene tubes, diluted 1:1 with saline, and centrifuged for 10 minutes at 1500 rpm. We studied the slurry. For this reason, the measurements are done in calibrated test tubes with 3 ml of the investigated lysozyme solution each time. The control is 0.5 M phosphate buffer. The research revealed that those with periodontitis and caries had pH alterations in their saliva. This group's pH was 5.03. Compared to the healthy group, the pH decreased. The results showed that individuals with dental and periodontal issues had substantially lower levels of Lysozyme than healthy people. A severe decrease of nonspecific oral tissue resistance lowers oral fluid resistance to pathogens. Morover, Oral bacteria were all Amoxicillin resistant. Lactobacillus.
      PubDate: Tue, 30 Nov 2021 00:00:00 +030
       
  • Modeling of the Magnetic Field of Current Carrying Conductor with Finite
           Elements Method

    • Authors: Hajrudin HUSEJNİ; Naim SYLA, Gazmend NAFEZİ, Fisnik ALİAJ
      Abstract: In this paper, we have modeled and simulated the magnetic field of the conductor by using the finite element method, which is incorporated in Ansoft Maxwell software. Modeling and simulation are done for a conductor and two conductors located at a small distance between them. Our study is based on the method of finite elements and Biot-Savart law for calculating the magnetic field depending on the distance from the conductor. We have observed that the calculated values of the magnetic field are in good accordance with Biot-Savart law [1]. We have found that magnetic field normal to the main axis of the conductor falls linearly towards it, whereas outside the conductor magnetic field is inversely proportional to distance.In the case of simultaneous calculation of the field inside and outside the conductor, a small margin has been found. This difference is as a result of the simultaneous calculation of magnetic field in two environments with different magnetic permeability. Finally, we have computed the magnetic field at an equal point between two conductors when the currents have opposite and same direction, whereby a huge difference between the magnetic fields is found. We show that we can amplify or reduce the intensity of the magnetic field, based not only on the distance between the conductors but also on the basis of the directions of the currents flowing through these conductors.
      PubDate: Tue, 30 Nov 2021 00:00:00 +030
       
 
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