http://ajscieng.com/index.php/ajse/issue/feed Advanced Journal of Science and Engineering 2020-12-30T00:00:00+0330 Editor of Adv J Sci Eng editor.ajscieng@gmail.com Open Journal Systems <p><strong>Advanced Journal of Science and Engineering (Adv. J. Sci. Eng.); eISSN: 2717-0705<br /></strong></p> <p>is a multidisciplinary international research journal covering all fields of basic sciences and engineering established by SciEng Publishing Group. This double-blind peer-reviewed journal aims to provide a rapid-processing platform for researchers from all around the world to share their latest findings. The journal policy is Open Access based with no article processing charges and all published articles of this journal are freely available for readers through online system at the journal homepage; <a href="http://www.ajscieng.com">http://www.ajscieng.com</a> without any subscription fee.</p> <p><strong>Adv. J. Sci. Eng.</strong> has been publishing Quarterly (4 issues per year) accepting all Original Research and Review Articles in addition to Short Communications and Letters.</p> <p>The average time between submission and final decision is about three weeks and the average time between acceptance and publication is about one week.</p> <p>Please submit your manuscripts to <strong>Adv. J. Sci. Eng.</strong> through on-line submission system: <a href="http://www.ajscieng.com">http://www.ajscieng.com</a></p> <p><strong>In case of any questions, please contact us;</strong> <em>E-mail:</em> <a href="mailto:editor.ajscieng@gmail.com">editor.ajscieng@gmail.com</a></p> http://ajscieng.com/index.php/ajse/article/view/ajse2014113 Wedge Angle Confirmation in Computer Controlled Wedge Field 2020-06-23T08:12:47+0430 Nasir Ilyas nasir.ilyaaz@gmail.com Salman Farrukh namlas80@yahoo.com <p>Wedge is a beam amending devices that causes an advanced decrease in the intensity across the beam resulting in a tilt of the isodose curves from their normal positions. The use of a computer-controlled wedge system is an important segment of radiotherapy and increases the uniformity of dose in the target volume. The aim of this study is to verify the virtual wedge angles from the machine setup angles in Siemens’ ONCOR Linear accelerator (Linac) and compare it with published data of different linear accelerators as a function of beam energy and field sizes. This experiment was carried out on Siemens’ ONCOR impression linear accelerator. The doses at different depths were measured by using the CC13 ion chamber. During our work, the source to surface distance was kept 100 cm. The square field sizes on which we worked were 10, 15, and 20 cm<sup>2</sup>. The selected virtual wedge angles for our study are 15, 30, 45, and 60 degrees. This work was carried out for both photon energies 15 MV and 6 MV, tissue-equivalent water phantom IBA blue water phantom inside which all the observations were taken. The LDA99 detector for the virtual wedge profile was used. The wedge angle was calculated for the Siemen’s given formula. The variation in wedge angle from machine setup angle and published data as a function of beam energy and field sizes were analyzed. The variations increase with field size and wedge angle but decrease with beam energy. Variation is under 3% which is acceptable before treatment planning.</p> 2020-10-22T00:00:00+0330 Copyright (c) 2020 Advanced Journal of Science and Engineering http://ajscieng.com/index.php/ajse/article/view/ajse2014118 Heat Driven Spin Currents in DNA Chains 2020-08-11T08:50:35+0430 Sohrab Behnia s.behnia@sci.uut.ac.ir Fatemeh Nemati nemati.fatemeh.67@gmail.com Samira Fathizadeh samira.fathi@ymail.com Mostafa Salimi salimi.physics@yahoo.com <p>Recent discoveries of phenomena involving the interaction of heat currents and spin currents have originated a vigorous field of spintronics, known as spincaloritronics. Meanwhile, creating the spin current via the applying the temperature gradient attracts much attention among the scientists. By using spin polarization, the spintronic phenomenon able to store and process the information, so transporting information is interested. On the other hand, widely known for storage of genetic information in biology, DNA has also been recognized as a useful building material, in the field of nanotechnology. Here, we study the spin-selectivity properties of DNA chains by assuming the Peyrard-Bishop-Holstein model. The temperature gradient applied using the temperature difference between two ends of chain via the Nose-Hoover thermostat. We suppose the generation of net spin currents by heat driving. The effect of external magnetic and electrical fields simultaneously with temperature gradient is studied. The obtained results show the appropriate range of affected factors for creating the spin current. Thus, one can design a most efficient device for spin transport.</p> 2020-10-22T00:00:00+0330 Copyright (c) 2020 Advanced Journal of Science and Engineering http://ajscieng.com/index.php/ajse/article/view/ajse2014122 Structural, Electrical and Magnetic Properties of FeO added GdBaCuO Superconductors 2020-07-16T17:11:02+0430 Hasan Agil hasanagil@hakkari.edu.tr Nurcan Akduran akduran@gmail.com <p>In this study, the effects of FeO addition (0, 1, 2, 3, 4, 5, 10 and 20 wt %) on the structural, electrical and magnetic properties of GdBaCuO-123 (Gd-123) superconductor prepared by the conventional solid state method were investigated. The phase analysis and the lattice parameters of the materials were analyzed by X-ray diffraction (XRD) method. The critical temperatures (<em>T<sub>c</sub></em>) of the samples were determined from the resistance measurements by the standard four-point probe method. From these measurements, superconducting behaviour was observed for the addition of FeO up to 5 wt %. On the other hand, semiconducting behaviour was observed for higher FeO additions (10 and 20 wt %). The activation energies (<em>U<sub>0</sub></em>) were also evaluated by using the thermally-assisted-flux-flow (TAFF) model from the resistance measurements of the samples. It was observed that the activation energy of the samples decreased with the increase of the amount of FeO. The magnetic measurements of the samples (M-H) were carried out at 20 K with the Quantum Design PPMS system. Critical current densities (<em>J<sub>c</sub></em>) were calculated from the width of the M-H curves by using the Bean critical state model. According to the obtained results, the highest current carrying capacity belongs to 1 wt % added sample and has 1.2 × 10<sup>4</sup> A/cm<sup>2</sup> value at 20 K and 0 T. It was also found that all samples were still carrying high currents even in high fields.</p> 2020-10-25T00:00:00+0330 Copyright (c) 2020 Advanced Journal of Science and Engineering http://ajscieng.com/index.php/ajse/article/view/ajse2014128 Modular Intelligent Fixture Design for Bodywork of Electric Vehicles 2020-10-09T09:34:44+0330 Hamid Rezaei hamid.rezaei@srbiau.ac.ir Hamid Soleimanimehr soleimanimehr@srbiau.ac.ir Shahram Etemadi Haghighi setemadi@srbiau.ac.ir Morteza Shankayi m.shankayi@modares.ac.ir Javad Gholampour Darzi javad.gholampour@ut.ac.ir <p>A modular intelligent fixture is designed for bodywork of electric vehicles. An electromechanical system for the fixture is proposed and an intelligent algorithm to automate the car production is developed. In this system, the mechanism of movement is designed using an electric actuator and a transmission system including ball screw, bearings, slot and saddle movement system. This is particularly applied to the manufacturing of the bodywork of an electric vehicle. This application minimizes the time needed for fixture tools design and selection. An artificial intelligence code was developed for controlling the fixture system. The flexible system allows for simultaneous manufacturing of different bodyworks of electric vehicles.</p> 2020-11-08T00:00:00+0330 Copyright (c) 2020 Advanced Journal of Science and Engineering http://ajscieng.com/index.php/ajse/article/view/ajse2014133 Biomimetic Synthesis of CuO Nanoparticle using Capparis decidua and their Antibacterial Activity 2020-10-10T16:12:35+0330 Trupti Pagar truptighotekar318@gmail.com Suresh Ghotekar ghotekarsuresh7@gmail.com Shreyas Pansambal shreyas.pansambal@gmail.com Khanderao Pagar khanderaopagar205@gmail.com Rajeshwari Oza rajeshwariksaraswat@gmail.com <p>In this study, a simple approach for the biomimetic synthesis of copper oxide nanoparticle (CuO NP) using <em>Capparis decidua</em> bark extract (CDBE) was investigated. The biogenic synthesis of CuO NP was explored by XRD, SEM, EDX and TEM studies. XRD data shows the formation of monoclinic crystalline structures of CDBE mediated CuO NP. SEM images show that the NPs have quasi-spherical shape and the mean diameter were found to be 5-40 nm. These perceptions were affirmed by HRTEM analysis. CDBE mediated CuO NP shows significant bactericidal performance against three pathogenic bacteria such as <em>Bacillus subtilis</em>, <em>Staphylococcus aureus</em> and <em>Escherichia coli</em>. The study reveals a straightforward, eco-benign and vigorous approach for the biomimetic production of CuO NP using therapeutic plants.</p> 2020-11-11T00:00:00+0330 Copyright (c) 2020 Advanced Journal of Science and Engineering http://ajscieng.com/index.php/ajse/article/view/ajse2014106 A Review on Eco-Friendly Synthesis of BiVO4 Nanoparticle and its Eclectic Applications 2020-09-12T16:22:50+0430 Suresh Ghotekar ghotekarsuresh7@gmail.com Khanderao Pagar khanderaopagar205@gmail.com Shreyas Pansambal shreyas.pansambal@gmail.com H.C. Ananda Murthy anandkps350@gmail.com Rajeshwari Oza rajeshwariksaraswat@gmail.com <p>The paper presents a review of green syntheses and selective applications of bismuth vanadate nanoparticles (BiVO<sub>4</sub> NPs). Generally, ample number of biomolecules exists in plant extracts and these are mainly accountable for the facile green synthesis of BiVO<sub>4</sub> NPs. Moreover, BiVO<sub>4</sub> NPs has been widely researched in chemistry, biotechnology, physics and biochemistry fields due to their interesting technological chemical, biological, ionic conductivity and ferro-elastic properties. It can also be used in diverse fields, such as sensors, photocatalysis, water splitting and antimicrobial activity. Till date, BiVO<sub>4</sub> NPs has been synthesized by various known physical and chemical approaches. The article mainly discusses the green synthesis of BiVO<sub>4</sub> NPs via plant extracts. Moreover, this article shows a detailed overview of the green synthesis, characterization and significant applications of BiVO<sub>4</sub> NPs.</p> 2020-10-13T00:00:00+0330 Copyright (c) 2020 Advanced Journal of Science and Engineering