Engineering Journal: December 2020

Detection of Xyelene (C8H10) by Pd-gate MOS Sensor

Abstract— A sensor based on Pd/SiO₂/Si MOS capacitor was fabricated on p type <100> (1-6 ΩCm) Si with thermal oxide layer of thickness about 200 A˚. The sensor showed sensitivity to Xyelene (C₈H₁₀ ) vapour and was characterized at Xyelene concentrations ranging from (500ppm-16,000ppm) at different operating temperatures (room temperature,70˚C and 120˚C), in air. It was found that sensitivity of the sensor was maximum at an operating temperature of 70˚C.

Keywords— MOS (metal-oxide- semiconductor) structure, gas sensor, Palladium (Pd), sensitivity, C-V and G-V characteristics.

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Trimaran Fishing Vessel Development: A Review of Vessel Power, Safety and Comfort Needs

Abstract— In general, fishing fleets operating in Maluku waters and managed by local entrepreneurs consist of mono hull fishing vessels (such as purse seines, etc.) and trimaran in chart form. These two types of fishing fleets have been known to the people of Maluku for a long time. However, these two types each have their advantages and limitations, for example, mono hull fishing boats have limited deck space and poor transverse stability, especially in bumpy sea conditions in extreme weather. While the trimaran type has better deck space and transverse stability than a mono hull ship, but because it is still in chart form, it has limited space. The shortcomings that exist in these two types of fishing fleets are coupled with the expertise or experience of fishermen which has minimal impact on the decrease in the catch and what is worse can be fatal to accidents and the sinking of ship arma. To increase the catch of fisheries, it is necessary to have a means and a reliable fishing fleet. This study aims to examine the development of trimaran fishing vessels in terms of the study of energy needs, safety and comfort for the captain and crew during fishing operations. The initial stage of this research begins with data analysis and the principal size of mono hull fishing vessels operating in Maluku waters, from this data the hull form of a trimaran vessel is designed with an area similar to or close to the area of ​​a monohull fishing vessel operating in Maluku waters using maxsurf, then analyzed the calculation of obstacles. ship and stability to assess the energy needs and safety and comfort of the ship during fishing operations. This research is focused on analyzing the energy requirements, safety and comfort of the trimaran fishing vessel. The final result of this research is expected to be used as an alternative fishing boat to increase the fish catch of fishermen which will have an impact on the income and welfare of fishermen.

Keywords— Trimaran Fishing Vessel, Resistance, Power, Safety, Comfort.

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Effect of Citric Acid on Thickeners Used in Products for People Suffering Oropharyngeal Dysphagia

Abstract—Dysphagia is a digestive disorder recognized by the World Health Organization (WHO) in the International Classification of Diseases (ICD) characterized by the difficulty in forming or moving the bolus from the mouth to the oesophagus that can cause the passage of food into the respiratory tract. Foods for people with dysphagia are prepared with products that modify viscosity to make them safer when ingested. The aim of this work is to establish the interaction between citric acid, widely used by the food industry, with different thickeners, both first and second range, in order to check whether they fulfil the functions for which they have been designed. The time stability and viscosity as a function of the hydration time of six thickeners and their behavior in the temperature range between 25 and 50 °C were determined. Thickener concentrations up to a maximum of 6% were used in combination with 3acid concentrations (0.5, 1 and 2%). In distilled water, the sedimentation of first range thickeners and the gelification of second range thickeners were checked, as well as the change from non-Newtonian to Newtonian behaviour after the hydrolysis process in both types of thickeners. In the presence of citric acid, the behaviour of both types of thickeners was analogous. Second range thickeners have been found to be much safer than first range thickeners in modifying the viscosity of liquids for people with dysphagia due to the fact that they do not sediment.

Keywords—citric acid, dysphagia, gum, starch, thickener, viscosity.

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Impact of France Nuclear Tests on typhoons and Earthquakes in November 1990

Abstract— The paper investigates the relationship between the development of typhoons and strong earthquakes after the France nuclear tests (NT) in November 1990. It is shown that after the NT acoustic impact on the tropical disturbance of the Pacific Ocean cloud structures self-organized into a system of three interacting category 5 typhoons. The dependence of the earthquakes M> 4.6 and the intensity of these typhoons as well as Typhoon Mike which passed earlier through the Philippine Islands are considered. Areas were found where the impact of typhoons led to earthquakes M> 5.4 of small lithospheric plates.

Keywords— Pacific, nuclear test, typhoon, earthquake.

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Engineering Journal: November 2020

Hydrogen Production System using a Plasma Reactor

Abstract— The present article deals with a potential to interconnect the plasma technology of waste processing with the technology of hydrogen separation from syngas using metal hydride alloys. It also describes key components of the system used for syngas cleaning and their succession.

Keywords— hydrogen, plasma reaktor, waste treatment, gasification.

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Vehicle Re-Identification Based on the Authenticity of Orthographic Projection

Abstract— Vehicle re-identification is still a problem do not receive much attention in the multimedia and vision communities. Since most existing approaches mainly focus on the overall vehicle appearance for re-identification and do not consider the visual appearance changes of sides of vehicle, called local deformation. In this paper, we propose a vehicle re-identification method based on the authenticity of orthographic projection, in which three sides of vehicle are extracted, and the local deformation is explicitly minimized by scaling each pair of corresponding side to uniform size before computing similarity. To compute the similarity between two vehicle images, we 1) construct 3D bounding boxes around the vehicles, 2) extract sub-images of the three sides of each vehicle like a three-view drawing, 3) compute the similarity between each pair of corresponding side sub-images, and 4) use their weighted mean as the final measure of similarity. After computing the similarity between the query vehicle and all candidate vehicles, we rank these similarities and take the vehicle with the maximum similarity as the best match. To evaluate this approach, we use a dataset with 240 pairs of vehicle images extracted from surveillance videos shot at seven locations in different directions. The experimental results show that our proposed method can achieve 75.83% matching accuracy for the top-1 ranked vehicle and 91.25% accuracy for the top-5 vehicles.

Keywords— 3D bounding boxes, local deformation, vehicle re-identification, weighted mean.

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Design and Strength Analysis of the Base for Robot Baxter

Abstract— This paper discusses the issue of the subsystem of mobility and solves the design of the lower mobile base for a robot called Baxter. In this paper you can see all the models and parts that are used in construction of mobile base, from which the initial model of the base is created. After making a model of a base, we were putting a load (represents the weight of a robot) on it so we could determine what kind of relative deformations and stresses are created by using finite element method analysis FEM. Later we optimised the base (for example we were changing the length dimensions of some parts), so we could get better results from FEM analysis and also, we wanted the optimised base to acquire similar dimensions and weight as a commercial base. At the end we created technical sheets of all the parts of the base. These technical sheets were later sent to university SIGMA in Clermont-Ferrand (France), from which they constructed mobile base for robot Baxter. FEM analysis was done in program called NX Siemens and models of individual parts were modelled in CATIA V5.

Keywords— mobile base, subsystem of mobility, service robot, Baxter, strength analysis, finite element method.

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Engineering Journal: October 2020

Synthesis Methods of Saccharin-6-Carboxylic Acid Triglyceride

Abstract— One and two-step methods for the synthesis of saccharin-6-carboxylic acid triglyceride were studied. The reesterification reactions of 2-hydroxypropyl-1,3-bis-ethersulfoimide of this acid and glycerol with some aliphatic saccharin-6-carboxylic acid esters were carried out. The resulting products are characterized by elemental analysis and IR spectroscopy and size exclusion chromatography. It was found that when using a two-step method, the end product is obtained with the highest yield (85%).

Keywords— alkyl esters, glycerine, IR-spectra, monomer, reesterification, saccharin-6-carboxylic acid.

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The Test of Permeable by Expansion Valve in Cooling Compressor

Abstract— Current article describes the HFC test, which the measure the amount of impurity in cooling compressors, which they could cause damage to them. In introduce of the article describes the process of cooling cycle in cooling equipment. In the tab. 1 are summarized the basic advantages and disadvantages of use natural based refrigerant, which are used in producing the compressors designated for equipment’s as refrigerators, air conditions, cooling rooms. In the article are describe the media, which it may occur in compressor, but their presence can may cause the problems with the operation of compressor possibly its damage. We say about media respectively the products, which they are not miscible with oil. It is water, paraffin, silicone and alkali products. Test HFC discovers and measurements the presence these components and on the basis of their quantity decides on the quality of production of refrigeration compressors. The article describes the test procedure and in the end the evaluation of the maximum value of the given incompatible respectively unwanted products.

Keywords— compressor, HFC test, refrigerant, refrigeration equipment.

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Comparing Oxygen Plasma, Hydrogen Peroxide and Flame Treatments of Polyamide Tubes to Hydrophilic Coating Adhesion

Abstract— Hydrophilic-coated catheters reduce the endovascular friction between the device and blood and increase the biocompatibility of catheters. This study investigated three surface treatments to improve catheter surface. Oxygen plasma, hydrogen peroxide, and flame exposure coating equipment were manufactured. Polyamide 11 (PA11) catheter surfaces were treated and the influence of exposure time for each individual technique was studied. Treated samples were characterized by goniometry, scanning electron microscopy, infrared spectroscopy and scratch resistance of the hydrophilic coating deposited. Oxygen plasma, hydrogen peroxide, and flame surface treatments may considerably increase the wettability and adhesion properties of polyamide 11. The flame treatment during 60 s showed significant improvement in surface properties, in which both wettability and the adhesion of the hydrophilic coating were superior in comparison to the other samples. The devices developed in these work were able to coat and improve catheter surface properties.

Keywords— Oxygen Plasma, Hydrogen Peroxide, Flame Treatments, Polyamide Tubes, Hydrophilic Coating.

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Thermal Insulation of Distribution Pipelines

Abstract— In heat distribution systems, which are used to supply a heat-conveying medium to consumers, a certain amount of heat is always released to the surrounding environment. Such inevitable and undesired release of heat is referred to as heat loss. Heat loss causes that the medium flowing inside the distribution system cools down and its subsequent heating up is therefore more demanding. The consequences include higher costs of heat and hot water production not only for system operators but also for end consumers. Therefore, attention should be paid to thermal insulation when incorporated in heat distribution systems, primarily to its quality and thickness.

Keywords— heat network, efficiency, heat loss, ambient temperature.

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Dietary Assessment & Evaluation of Nutritional using Image Segmentation for Mobiles: Survey

Abstract— There is a great demand for easily accessible user friendly dietary self assessment and self management applications. This is because of growing concern about chronic diseases and other health problems related to cancer and obesity. So accurate diet measurement is very important. Measurement of accurate dietary and development of fully automatic estimation of nutritional intake is considered to be an open research problem. In this paper a survey on mobile telephone food record has been done. This mobile telephone food record provides an accurate account of daily food and nutrient intake of an individual. The identification and quality estimation is based on obtaining images before and after consumption of meal. Image analysis is done which includes the segmentation of food items, identification of food items by its features, automatic estimation of food portion.

Keywords— dietary assessment, diet record method, image analysis, nutrient computation, volume estimation.

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Recovery of Heavy Oil from Unconventional Source (Oil Sands) with Design Steam Injection System

Abstract— The use of steam ranging from 100^oC to 280^oC in extracting and producing oil from unconventional reservoir (oil sand) was investigated. Core samples were obtained from Edo state in Nigeria. An oil sand laboratory reservoir model was used to investigate technical feasibility of the injection of steam as an enhanced oil recovery agent for tight hydrocarbon reservoirs and the effect of temperature on the petrophysical properties such as porosity and permeability of oil sand reservoir. Steam was injected into the oil sand reservoir to recover bitumen at different temperatures ranging from 100^oC to 280^oC. Results showed that as the temperature of the steam increased, more hydrocarbon (bitumen) was recovered due to the reduction of its viscosity and oil-water interfacial tension. The core experiment indicates that the porosity and permeability of a tight formation such as that of oil sand at ambient temperature is 0.038 and 0.007MD respectively. An increase in reservoir temperature by the injection of steam altered the petrophysical properties (porosity and permeability) of the reservoir. Samples collected and analyzed after recovery showed a decrease in porosity and an increase in the permeability of the formation. Results indicate that the viscosity of bitumen decreased with an increasing temperature. Maximum recovery of bitumen was obtained at 280^oC. The injection of steam at temperature of 300^oC and above, would produce more bitumen at industrial scale and could be refined and upgraded to liquid fuels to supplement the drastic reduction of the conventional oil. The results obtained from this work showed good agreement with data from existing data.

Keywords— Bitumen, Heavy oil, Oil sands, Permeability, Porosity, Steam, tight formation, Unconventional, viscosity.

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Vehicle Re-Identification Based on the Authenticity of Orthographic Projection

Abstract— Vehicle re-identification is still a problem do not receive much attention in the multimedia and vision communities. Since most existing approaches mainly focus on the overall vehicle appearance for re-identification and do not consider the visual appearance changes of sides of vehicle, called local deformation. In this paper, we propose a vehicle re-identification method based on the authenticity of orthographic projection, in which three sides of vehicle are extracted, and the local deformation is explicitly minimized by scaling each pair of corresponding side to uniform size before computing similarity. To compute the similarity between two vehicle images, we 1) construct 3D bounding boxes around the vehicles, 2) extract sub-images of the three sides of each vehicle like a three-view drawing, 3) compute the similarity between each pair of corresponding side sub-images, and 4) use their weighted mean as the final measure of similarity. After computing the similarity between the query vehicle and all candidate vehicles, we rank these similarities and take the vehicle with the maximum similarity as the best match. To evaluate this approach, we use a dataset with 240 pairs of vehicle images extracted from surveillance videos shot at seven locations in different directions. The experimental results show that our proposed method can achieve 75.83% matching accuracy for the top-1 ranked vehicle and 91.25% accuracy for the top-5 vehicles.

Keywords— 3D bounding boxes, local deformation, vehicle re-identification, weighted mean.

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