International Journal of Engineering Science Technologies <p>International Journal of Engineering Science Technologies is an open access peer reviewed journal that provides bi-monthly publication of articles in all areas of Engineering, Technologies and Science. It is an international refereed e-journal. IJOEST have the aim to propagate innovative research and eminence in knowledge. IJOEST Journals has become a prominent contributor for the research communities and societies. IJOEST Journal is making the bridge between research and developments.</p> <p>Editor-in-chief:<br>Dr. Mohammad Arif Kamal (Associate Professor, Architecture Section, Aligarh Muslim University, Aligarh - 202002, India)</p> <p>Managing Editor:<br>Dr. Tina Porwal (PhD, Maharani Laxmibai Girls P.G. College, Indore, India)</p> Granthaalayah Publications and Printers en-US International Journal of Engineering Science Technologies 2456-8651 <p>Please read copyrigth agreement care fully:-</p> <p><a title="CopyRight Agreement" href="" target="_blank" rel="noopener"></a></p> CONSTRUCTION OF A SOMATOSENSORY INTERACTIVE SYSTEM BASED ON COMPUTER VISION AND AUGMENTED REALITY TECHNIQUES USING THE KINECT DEVICE FOR FOOD AND AGRICULTURAL EDUCATION <p>A somatosensory interactive system based on computer vision and augmented reality (AR) techniques using the Kinect device is proposed, on which a game of harvesting three kinds of fruit can be played for food and agricultural education. The Kinect is used to capture users’ motion images, the Unity3D is used as the game engine, and the Kinect SDK is used for developing programs, to implement the tasks of face detection and tracking, hand-gesture recognition, and body-model matching and tracking involved in fruit-harvesting activities. AR-based photos of the harvest result can be taken and downloaded as souvenirs. The system was exhibited and observations of the users’ performances as well as interviews with experts and the users were conducted. The collected opinions were used to evaluate the effectiveness of the system, reaching the following conclusions: 1) the interactive experience of using this system is simple and intuitive; 2) the use of body movements for man-machine interaction is given positive reviews; 3) the introduction of somatosensory interactive education can arouse participants’ interest, achieving the effect of edutainment; and 4) the experience of taking commemorative photos can achieve the publicity and promotion effect of food and agricultural education through sharing on social media.</p> Chao-Ming Wang Yu-Hui Lin Copyright (c) 2021 Chao-Ming Wang, Yu-Hui Lin 2021-03-08 2021-03-08 5 2 1 37 10.29121/ijoest.v5.i2.2021.162 A ENRICHMENT FACTORS FOR CADMIUM AND LEAD IN SEDIMENT OF GEMBONG ESTUARY, BEKASI, INDONESIA <p>The enrichment factors of Cd and Pb were determined in Gembong estuary as the biggest estuary in and polluted in Indonesia. Heavy metals over a period of time sooner or later will cause damage to aquatic ecosystems. Cd (cadmium) and Pb (lead) are non-essential metals. Various human activities both industrial and domestic around Gembong estuary waters have the potential to degrade the quality of the water. The purpose of this study is to analyze the content and enrichment factors of Cd and Pb in sediment. The study was conducted in October 2019 at the high tide and low tide. The method used was quantitative. Heavy metal analysis using the Atomic Absorption Spectrophotometer (AAS AA-7000). The result showed that the concentrations of heavy metals contained in the sediment at the high tide were Cd (0.345-1.261 µg/g) and Pb (13.200-47.600 µg/g) and at low tide were Cd (0.017-1.261 µg/g) Pb (15.600-45.240 µg/g). Based on IADC/CEDA quality standard criteria (1997). The standard quality criteria for Cd (0.8 µg/g) means that the concentration of Cd at high tide and low tide have exceeded the quality standard. Meanwhile, for Pb (85 µg/g), the concentration of Pb at high tide and low tide was still below the target level of quality standards. The enrichment factor values for Cd at the high tide and low tide fall into the moderate-very high enrichment category. The enrichment factor values for Pb at the high and low tide was in the moderate-high enrichment category</p> Stella Feska Muslim Haeruddin Copyright (c) 2021 Stella Feska, Muslim , Haeruddin 2021-03-12 2021-03-12 5 2 38 44 10.29121/ijoest.v5.i2.2021.157 THE DEVELOPMENT OF NEUROTECHNOLOGIES IN THE PERIOD OF THE SIXTH TECHNO-LOGICAL ORDER <p>The subject of the article is the development of neurotechnologies in the sixth technological or-der, the object of the article is neurotechnologies, the purpose of the work is to increase the ef-ficiency of the development of neurotechnologies in the sixth technological order, to achieve this goal, the following tasks are solved: research of the concept, content, structural elements of the sixth technological order; description of the essence and content of neurotechnologies; de-velopment of methods of logical analysis and synthesis of neurotechnologies; the scientific methods in the article are forecasting, synthesis and analysis, historical and logical analysis, expert assessments, comparative and system analysis; the scientific novelty of the article is as-sociated with the formation of the methodology for the development of neurotechnologies in the period of the sixth technological order.</p> <p>&nbsp;</p> Valery V. Glushchenko Copyright (c) 2021 Valery V. Glushchenko 2021-03-20 2021-03-20 5 2 45 57 10.29121/ijoest.v5.i2.2021.163 METHODOLOGY FOR EVALUATING THE EFFECTIVENESS OF MACHINE AND EQUIPMENT MAINTENANCE SYSTEMS <p>The subject of the article is the methodology for evaluating the effectiveness of technical service systems of machines and equipment, the object of the article is the system of technical service of machines, the purpose of the article is to develop a methodology for evaluating the effectiveness of technical service systems of machines; to achieve this goal, the tasks are solved: the concept of the methodology for evaluating the effectiveness of the system of technical service of machines and equipment is clarified; the methodology of the system approach is formed when evaluating the effectiveness of complexes of technical service of machines and equipment; the methodology of modeling the system of machine technical service services is being developed; a set of indicators for evaluating the effectiveness of machine technical service systems is being formed; in the article, the research methods are typical representations of machines, expert assessments, analysis and synthesis, a system approach, comparative and logical analysis, and heuristic modeling; the scientific novelty of the article is determined by the development of methodological provisions for evaluating the effectiveness of technical service of machines, the synthesis of a set of standard representations (models) of technical service systems of machines, the formation of criteria for evaluating the effectiveness of a technical service system.</p> Valery V. Glushchenko Copyright (c) 2021 Valery V. Glushchenko 2021-04-03 2021-04-03 5 2 58 68 10.29121/ijoest.v5.i2.2021.166 MEASUREMENT AND MODELLING OF GRADIENT MAGNETIC FIELDS FOR BIO-CHEMICAL SEPARATION PROCESSES <p>Separation processes are widely used in chemical and biotechnical processes. Especially biomagnetic separation is an important issue among effective separation processes to separate the magnetic micron and submicron particles. It is necessary to establish and determine a high magnetic field or field gradient in the separation cell. However, it is not easy to determine the magnetic field gradient in the working region for different separation in practice. The reason for these difficulties is that the magnetic cells used in biochemical separation have different geometries and there are no simple and useful systems to easily measure these magnetic fields. Two main objectives are aimed in this study. First, a simple measuring device design can measure gradient magnetic fields with high precision of about 0,01mm and, secondly, obtain simple empirical expressions for the magnetic field. A magnetometer with Hall probes that works with the 3D printer principle was designed and tested to measure the magnetic field. Magnetic field changes were measured according to the surface coordinates on the measurement platform or measuring cell. Numerous experimental measurements of gradient magnetic fields generated by permanent magnets have been taken. The results obtained from the studies and results from the proposed empirical models were compared.</p> Hatice Bilgili Teymuraz Abbasov Yusuf Baran Copyright (c) 2021 Hatice Bilgili, Teymuraz Abbasov, Yusuf Baran 2021-04-10 2021-04-10 5 2 69 80 10.29121/ijoest.v5.i2.2021.174 FLUOROQUINOLONES ANTIBIOTICS ADSORPTION ONTO POLYMER COATED MAGNETIC NANOPARTICULAR ACTIVATED CARBON <p>The present study investigated the adsorption of molecular fluoroquinolone (FLQ) from&nbsp; aqueous solution onto active carbon (AC), magnetic activated carbon (MagAC), styrene-butadiene styrene magnetic activated carbon (SBS/MagAC) and poly charbon magnetic activated carbon (PC/MagAC) as adsorbent materials. The process optimization was carried by investigating the effects of pH, temperature, solid-liquid ratio, adsorbent type and initial concentration of FLQ. The data showed that adsorption reached equilibrium in as little as one hour. The adsorption cacapcity was comparatively less at low pH values than at approximately pH 5.0. The results also showed that the polymer coated magnetic materials did not perform very well at high pH values. However, all the materials performed well at room temperature when the situation was examined in terms of kinetics. It was also observed that AC, SBS/MagAC and PC/MagAC are more effective than MagAC to remove FLQ from aqueous medium. The kinetic data support pseudo-second-order model (r2 ⩾ 0.95) but showed very poor fit for pseudo-first-order model (r2 ≤ 0.90). Intra-particle model also showed that there were two separate stages in sorption process, namely, external diffusion and the diffusion of inter-particle. Adsorption isotherms for all adsorbends were fitted to Langmuire models more effectively than Freundlich models (r2 ⩾ 0.98). Thermodynamics parameters such as; free energy (ΔG0), enthalpy (ΔH0) and entropy (ΔS0) were also calculated. In conclusion, our results revealed that FLQ can be removed more easily from the aqueous medium by using magnetic and polymeric material.</p> M. Uğurlu H. Osman A.İ. Vaizoğullar A.J Chaudhary Copyright (c) 2021 M. Uğurlu, H. Osman, A.İ. Vaizoğullar, A.J Chaudhary 2021-04-11 2021-04-11 5 2 81 104 10.29121/ijoest.v5.i2.2021.172