Open Access. Powered by Scholars. Published by Universities.®

Engineering Commons

Open Access. Powered by Scholars. Published by Universities.®

Temperature

Discipline
Institution
Publication Year
Publication
Publication Type
File Type

Articles 1 - 30 of 392

Full-Text Articles in Engineering

Effect Of Developer Temperature On Photoresist Contrast In Grayscale Lithography, Dale Farnan, George Patrick Watson May 2021

Effect Of Developer Temperature On Photoresist Contrast In Grayscale Lithography, Dale Farnan, George Patrick Watson

Protocols and Reports

SPR 220-3 photoresist was spin-coated onto a silicon wafer, exposed using a Heidelberg DWL66+ laserwriter at different laser powers, and developed at different temperatures. The effect of developer temperature on photoresist contrast was examined. Results show that increasing developer temperature decreased photoresist contrast and increased required dose.


Estimation Of Missing Temperature Data By Artificial Neural Network (Ann), Okan Mert Katipoglu, Resat Acar Mar 2021

Estimation Of Missing Temperature Data By Artificial Neural Network (Ann), Okan Mert Katipoglu, Resat Acar

Dicle University Journal of Engineering

Ensuring more reliable and quality meteorological and climatological studies by providing data continuity and widening the data range. For this reason, missing values in meteorological data such as temperature, precipitation, evaporation must be completed. In this study, an artificial neural network (ANN) model was used to complete missing temperature data in the Horasan meteorology station. To establish the ANN model, monthly average temperature values of neighboring stations having similar climatic characteristics and altitude with Horasan were used as input. The monthly average temperature values of the Horasan station were used as output. Approximately 70% of the data was used for ...


Study Of The Rheological Properties Of The Suspension Formed During The Production Of Caustic Soda By The Lime Method, Aktam Ulashovich Erkaev, Dildora Tursunova Mar 2021

Study Of The Rheological Properties Of The Suspension Formed During The Production Of Caustic Soda By The Lime Method, Aktam Ulashovich Erkaev, Dildora Tursunova

Chemical Technology, Control and Management

The process of obtaining sodium hydroxide - caustic soda by conversion of soda ash with lime milk in the presence of natural mirabilite - has been investigated. The influence of temperature, Na2CO3: Na2SO4 ratio, concentration of lime milk and duration of the conversion process on this process was studied by identifying their optimal values. The study of the rheological properties of the reaction pulp showed that it is mobile and well filtered, which makes it possible to obtain rapidly settling large crystals of Na2CO3·2Na2SO4, Na2CO3, Na ...


Development Of Preparations Based On Local Components For Dust Suppression On Quarry Roads, Olikulov Fakhriyor, Mukhiddinov Bakhоdir, Vapoev Khusniddin, Zhurayev Shokhruh Feb 2021

Development Of Preparations Based On Local Components For Dust Suppression On Quarry Roads, Olikulov Fakhriyor, Mukhiddinov Bakhоdir, Vapoev Khusniddin, Zhurayev Shokhruh

CHEMISTRY AND CHEMICAL ENGINEERING

The aim of the work is to develop dust-collecting preparations based on local raw materials for the suppression of man-made dust formed on quarry paths. For this purpose, 4 types of the drug were created in the laboratory on the basis of domestic raw materials for dust suppression. The dependence of the viscosity and density of the created preparations on the concentration of components and temperature is studied. For the preparation of the solution of the created drug, a semi-industrial installation is created, which presents the general view and the process of preparing the solution. The spray of the prepared ...


Synthesis And Spectroscopic Study Of Complex Compounds Of Mn(Ii), Co(Ii), Ni(Ii), Cu(Ii) And Zn(Ii) Acetates With 2-Aminobenzimidazole, Gapurova Lobar, Kadirova Shakhnoza, Rakhmonоva Dilnoza, Olimova Manzura Feb 2021

Synthesis And Spectroscopic Study Of Complex Compounds Of Mn(Ii), Co(Ii), Ni(Ii), Cu(Ii) And Zn(Ii) Acetates With 2-Aminobenzimidazole, Gapurova Lobar, Kadirova Shakhnoza, Rakhmonоva Dilnoza, Olimova Manzura

CHEMISTRY AND CHEMICAL ENGINEERING

The aim of the work is to develop a synthesis procedure and obtain new complex compounds of transition metal acetates with 2-aminobenzimidazole (L), to study the composition and structure of the synthesized compounds by elemental, thermal, X-ray phase analysis and IR spectroscopy. A procedure for the synthesis of new complex compounds of Mn(II), Cо(II), Ni(II), Cu(II) and Zn acetates with 2-aminobenzimidazole was developed and the composition and structure of the synthesized complex compounds were studied using modern physicochemical methods. Coordination competing donor centers, electronic and geometric structures of the ligand molecule were studied on the basis ...


Research Of Focl Parameters In The Range Of Positive Temperatures, Dilmurod Davronbekov, Zafar Khakimov Feb 2021

Research Of Focl Parameters In The Range Of Positive Temperatures, Dilmurod Davronbekov, Zafar Khakimov

Bulletin of TUIT: Management and Communication Technologies

This article studies the parameters of fiber-optic communication lines (FOCL) in the temperature range. For research, a climatic unit has been developed that allows a wide temperature range for testing (from -90°C to + 90°C) and an experimental complex for investigating the stability of optical parameters of a fiber-optic cable with temperature changes in the range from + 18°C to + 76°C. A technology of sequential switching of optical fibers of a fiber-optic cable by means of welding is proposed, thanks to which the constructive problem of placing a long optical fiber in a limited volume of a heat ...


Investigation Of The Moisture Binding Forms In Plant Raw Materials And Thermal Characteristics Determination, Tojiniso Raxmanova, Shaxnoza Sultanova, Jasur Safarov, Esra Capanoglu Dec 2020

Investigation Of The Moisture Binding Forms In Plant Raw Materials And Thermal Characteristics Determination, Tojiniso Raxmanova, Shaxnoza Sultanova, Jasur Safarov, Esra Capanoglu

Technical science and innovation

In this article, the forms of moisture connection and the thermal characteristics of plant materials are studied. Rosehip and hawthorn fruits were chosen as the object of research. In the heat analyzer, a decrease in the mass of the product and an increase in temperature were found when the temperature was controlled in a certain gas environment. The curves of the dependence of the dog rose and hawthorn samples on the mass and temperature are given. DTA-1/10 galvanometer sensitivity; sensitivity of the DTG-1/5 galvanometer; the maximum heating temperature is 300° С and the rate of change of the ...


Specific Features Of Optical Fiber Cable Operation During Tension And Change Of Ambient Temperature, Dilmurod Davronbekov, Zafar Khakimov Dec 2020

Specific Features Of Optical Fiber Cable Operation During Tension And Change Of Ambient Temperature, Dilmurod Davronbekov, Zafar Khakimov

Bulletin of TUIT: Management and Communication Technologies

This article examines the effect of longitudinal and thermoelastic deformation of an optical module on the technological reserve of an optical fiber. Analytical expressions are given for determining the lower limit of the technological margin of an optical fiber for various types of fiber-optic cable section along the axis.


Uncertainty Of A Manometric Method For Determining The Humidity Of Fibrous Materials, O.Sh. Khakimov, N.Sh. Muminov, J.A. Hamidov Nov 2020

Uncertainty Of A Manometric Method For Determining The Humidity Of Fibrous Materials, O.Sh. Khakimov, N.Sh. Muminov, J.A. Hamidov

Chemical Technology, Control and Management

A manometric method for determining the moisture content of fibrous materials is considered. The scheme and principle of operation of the device. A formula is given for calculating the moisture content of a material. It is emphasized that the two-chamber manometric method for determining the moisture content of materials is an indirect measurement. To determine the measurement result and its uncertainty, it is necessary to justify and choose one of the appropriate methods for determining the measurement results and assess their uncertainty - the linearization method or the reduction method. The main sources of uncertainty are identified. The pairwise correlation between ...


Enhancing The Visibility Of Vernier Effect In A Tri-Microfiber Coupler Fiber Loop Interferometer For Ultrasensitive Refractive Index And Temperature Sensing, Fangfang Wei, Dejun Liu, Zhe Wang, Zhuochen Wang, Gerald Farrell, Qiang Wu, Gang-Ding Peng, Yuliya Semenova Nov 2020

Enhancing The Visibility Of Vernier Effect In A Tri-Microfiber Coupler Fiber Loop Interferometer For Ultrasensitive Refractive Index And Temperature Sensing, Fangfang Wei, Dejun Liu, Zhe Wang, Zhuochen Wang, Gerald Farrell, Qiang Wu, Gang-Ding Peng, Yuliya Semenova

Articles

In this paper a Vernier effect based sensor is analyzed and demonstrated experimentally in a tri-microfiber coupler (Tri-MFC) and polarization-maintaining fiber (PMF) loop interferometer (Tri-MFC-PMF) to provide ultrasensitive refractive index and temperature sensing. The main novelty of this work is an analysis of parameters of the proposed Tri-MFC-PMF with the objective of determining the conditions leading to a strong Vernier effect. It has been identified by simulation that the Vernier effect is a primary factor in the design of Tri-MFC-PMF loop sensing structure for sensitivity enhancement. It is furthermore demonstrated experimentally that enhancing the visibility of the Vernier spectrum in ...


Synthesis, Characterization And Sintering Behavior Influencing Mechanical, Thermal And Physical Properties Of Pure Cordierite And Cordierite–Ceria, Marikkannan Senthil Kumar, Ayyasamy Elaya Perumal, T. R. Vijayaram Oct 2020

Synthesis, Characterization And Sintering Behavior Influencing Mechanical, Thermal And Physical Properties Of Pure Cordierite And Cordierite–Ceria, Marikkannan Senthil Kumar, Ayyasamy Elaya Perumal, T. R. Vijayaram

Journal of Advanced Ceramics

The study of cordierite ceramic is the need of the hour in present technological world for various advanced engineering applications. Cordierite, which has relatively poor mechanical properties, has induced the use of various dopants to study the improvement in mechanical properties. Thirst of seeking new materials with good mechanical properties has revived the research on ceria doped cordierite. Present research conducted on pure cordierite and ceria doped cordierite ceramics has investigated the results of characterization and studied their suitability. Pure cordierite and cordierite–ceria (CeO2) composite ceramics synthesized for various stoichiometric composition (5–20 wt%) were compacted at 240 ...


Measurement Of Bit-Rock Interface Temperature And Wear Rate Of The Tungsten Carbide Drill Bit During Rotary Drilling, Vijay Kumar Shankar, Bijay Mihir Kunar, Chivukula Suryanarayana Murthy, M R. Ramesh Oct 2020

Measurement Of Bit-Rock Interface Temperature And Wear Rate Of The Tungsten Carbide Drill Bit During Rotary Drilling, Vijay Kumar Shankar, Bijay Mihir Kunar, Chivukula Suryanarayana Murthy, M R. Ramesh

Friction

Rock drilling is an essential operation in mining industries. Temperature at the bit-rock interface plays a major role in the wear rate of the drill bit. This paper primarily focuses on the wear rate of tungsten carbide (WC) drill bit and the interrelationship between temperature and wear rate during rotary drilling operations conducted using a computer numerical control (CNC) machine. The interrelationship between the temperature and wear rate was studied with regard to three types of rock samples, i.e., fine-grained sandstone (FG) of uniaxial compressive strength (UCS) that is 17.83 MPa, medium-grained sandstone (MG) of UCS that is ...


Study On Friction Performance And Mechanism Of Slipper Pair Under Different Paired Materials In High-Pressure Axial Piston Pump, Huaichao Wu, Limei Zhao, Siliang Ni, Yongyong He Oct 2020

Study On Friction Performance And Mechanism Of Slipper Pair Under Different Paired Materials In High-Pressure Axial Piston Pump, Huaichao Wu, Limei Zhao, Siliang Ni, Yongyong He

Friction

High-pressure axial piston pumps operate in high-speed and high-pressure environments. The contact state of the slipper against the swashplate can easily change from an oil film lubrication to a mixed oil film/asperity contact, or even dry friction. To improve the dry friction performance of slipper pairs and to avoid their potentially rapid failure, this study examined the effects of material matching on the dry friction performance of the slipper pair for high-pressure axial piston pumps. A FAIAX6 friction and wear tester was developed, and the dry friction coefficients of the slipper pairs matched with different materials were studied using ...


Molecular Dynamics Simulation Of Effects Of Nanoparticles On Frictional Heating And Tribological Properties At Various Temperatures, Chengzhi Hu, Jizu Lv, Minli Bai, Xiaoliang Zhang, Dawei Tang Oct 2020

Molecular Dynamics Simulation Of Effects Of Nanoparticles On Frictional Heating And Tribological Properties At Various Temperatures, Chengzhi Hu, Jizu Lv, Minli Bai, Xiaoliang Zhang, Dawei Tang

Friction

The temperature of a friction pair exerts considerable influence on the tribological behavior of a system. In two cases, one with and the other without Cu (copper) nanoparticles, the temperature increase in friction pairs caused by frictional heating and its tribological properties at various temperatures are studied by using the molecular dynamics approach. The results show that temperature distribution and surface abrasion are significantly improved by the presence of Cu nanoparticles. This is one of the reasons for the improvements in tribological properties achieved in the presence of nanoparticles. The temperature and range of influence of frictional heating for the ...


Effect Of Nanoparticles On The Performance Of Magnetorheological Fluid Damper During Hard Turning Process, P. Sam Paul, J. Agnelo Iasanth, X. Ajay Vasanth, A. S. Varadarajan Oct 2020

Effect Of Nanoparticles On The Performance Of Magnetorheological Fluid Damper During Hard Turning Process, P. Sam Paul, J. Agnelo Iasanth, X. Ajay Vasanth, A. S. Varadarajan

Friction

Magnetorheological (MR) fluid damper which allows the damping characteristics of the damper to be continuously controlled by varying the magnetic field is extensively used in metal cutting to suppress tool vibration. Even though magnetorhelogical fluids have been successful in reducing tool vibration, durability of magnetorhelogical fluids remains a major challenge in engineering sector. Temperature effect on the performance of magnetorhelogical fluids over a prolonged period of time is a major concern. In this paper, an attempt was made to reduce temperature and to improve viscosity of magnetorhelogical fluids by infusing nanoparticles along with MR fluids. Aluminium oxide and titanium oxide ...


Effect Of Temperature And Atmosphere On The Tribological Behavior Of A Polyether Ether Ketone Composite, Felipe Darabas Rzatki, Diego Vinicius Dalevedo Barboza, Renan Muller Schroeder, Guilherme Mariz De Oliveira Barra, Cristiano Binder, Aloisio Nelmo Klein, José Daniel Biasoli De Mello Oct 2020

Effect Of Temperature And Atmosphere On The Tribological Behavior Of A Polyether Ether Ketone Composite, Felipe Darabas Rzatki, Diego Vinicius Dalevedo Barboza, Renan Muller Schroeder, Guilherme Mariz De Oliveira Barra, Cristiano Binder, Aloisio Nelmo Klein, José Daniel Biasoli De Mello

Friction

Polyether ether ketone (PEEK) is a high-performance thermoplastic, which is often selected for high-temperature tribological applications under chemically aggressive environments. The present work investigates the tribological behavior of a high-performance PEEK composite under conditions that are often found inside hermetic compressors. Therefore, an AMTI tribometer equipped with a hermetic chamber and a heating system was used to conduct sliding tests of PEEK cylinders on AISI 304 stainless steel polished discs (Sq <10 nm) with reciprocating movement and a normal force of 175 N. The tribological behavior of the PEEK/AISI 304 stainless steel system was investigated as a function of ambient temperature (30℃ and 80℃) and atmosphere (atmospheric air and tetrafluoroethane). Wear and surface roughness analyses were performed with white light interferometry and optical microscopy. Raman spectroscopy was used to investigate transfer films on the counter body surface. Temperature was observed to have a strong influence on the tribological behavior of the samples tested under atmospheric air, with a 25% decrease in the friction coefficient associated with a 100% increase in the wear rate. However, the friction measured from the samples tested under a tetrafluoroethane atmosphere showed no signif icant temperature dependence.


Influence Of Technological Parameters On The Chemical Composition Of Calcium Polyphosphates From Phosphorites Central Kyzylkum, Ulugberdieva Ziyada, Khujamberdiev Sherzod, Mirzakulov Kholtura, Usmanov Ilkham Oct 2020

Influence Of Technological Parameters On The Chemical Composition Of Calcium Polyphosphates From Phosphorites Central Kyzylkum, Ulugberdieva Ziyada, Khujamberdiev Sherzod, Mirzakulov Kholtura, Usmanov Ilkham

CHEMISTRY AND CHEMICAL ENGINEERING

The aim of the research was to study the effect of temperature, the ratio of P2O5EPA:P2O5PRM and the duration of calcination on the content of various forms of P2O5 in calcium polyphosphate. The effect of calcination temperature from 150 to 300 °C, the ratio of P2O5EPA:P2O5FRM from 2,15 to 4,50 and the duration of the process from 20 to 120 minutes on the changes in various forms of P2O5 were studied. It was shown that with increasing temperature to 200-250 °C the content of the total (ortho + poly) assimilable form of Р2О5 increases and then decreases ...


Effects Of Period And Temperature On Quality And Shelf-Life Of Cucumber And Garden-Eggs Packaged Using Cassava Starch-Zinc Nanocomposite Film, Adeshina Fadeyibi, Zinash Delebo Osunde, Mohammed Gana Yisa Aug 2020

Effects Of Period And Temperature On Quality And Shelf-Life Of Cucumber And Garden-Eggs Packaged Using Cassava Starch-Zinc Nanocomposite Film, Adeshina Fadeyibi, Zinash Delebo Osunde, Mohammed Gana Yisa

Journal of Applied Packaging Research

Nanocomposite film can be used to prolong the shelf-life of fruits and vegetables. This research was undertaken to investigate the effects of packaging period and temperature on the quality and self-lives of cucumber and garden-eggs packaged using cassava starch-zinc nanocomposite film. Hundred grams each of cucumber and garden-eggs were wrapped in a 200× 350 mm size nanocomposite film and low density polyethylene (LDPE) of 2.240± 1.076 × 10-10 gm-1Pa-1s-1 water vapor and 1.568± 0.084× 10-10 gm-1Pa-1s-1 oxygen gas permeability. The products were stored at 10 ...


University Of Kentucky Measurements Of Wind, Temperature, Pressure And Humidity In Support Of Lapse-Rate Using Multisite Fixed-Wing And Rotorcraft Unmanned Aerial Systems, Sean C. C. Bailey, Michael P. Sama, Caleb A. Canter, Luis Felipe Pampolini, Zachary S. Lippay, Travis J. Schuyler, Jonathan D. Hamilton, Sean B. Macphee, Isaac S. Rowe, Christopher D. Sanders, Virginia G. Smith, Christina N. Vezzi, Harrison M. Wight, Jesse B. Hoagg, Marcelo I. Guzman, Suzanne Weaver Smith Aug 2020

University Of Kentucky Measurements Of Wind, Temperature, Pressure And Humidity In Support Of Lapse-Rate Using Multisite Fixed-Wing And Rotorcraft Unmanned Aerial Systems, Sean C. C. Bailey, Michael P. Sama, Caleb A. Canter, Luis Felipe Pampolini, Zachary S. Lippay, Travis J. Schuyler, Jonathan D. Hamilton, Sean B. Macphee, Isaac S. Rowe, Christopher D. Sanders, Virginia G. Smith, Christina N. Vezzi, Harrison M. Wight, Jesse B. Hoagg, Marcelo I. Guzman, Suzanne Weaver Smith

Mechanical Engineering Faculty Publications

In July 2018, unmanned aerial systems (UASs) were deployed to measure the properties of the lower atmosphere within the San Luis Valley, an elevated valley in Colorado, USA, as part of the Lower Atmospheric Profiling Studies at Elevation – a Remotely-piloted Aircraft Team Experiment (LAPSE-RATE). Measurement objectives included detailing boundary layer transition, canyon cold-air drainage and convection initiation within the valley. Details of the contribution to LAPSE-RATE made by the University of Kentucky are provided here, which include measurements by seven different fixed-wing and rotorcraft UASs totaling over 178 flights with validated data. The data from these coordinated UAS flights consist ...


Altered Temperature Threshold Assessment In Diabetic Patients Suffering From Peripheral Neuropathy, P. Praveen Aug 2020

Altered Temperature Threshold Assessment In Diabetic Patients Suffering From Peripheral Neuropathy, P. Praveen

International Journal of Electronics Signals and Systems

This project describes the assessment of the altered temperature sensation in the type 2 diabetic patients suffering from peripheral neuropathy. Peltier crystal is used as a temperature threshold determining tool. Its temperature is altered and this is introduced on the site of examination of the body like palm, foot etc. Tests are conducted for both hot and cold cases. The thermograph (temp v/s time plot) is plotted using digital values obtained by the electric circuitry in any of the software platforms. Average values of 3 or more tests yield a better distinctive value of the altered temperature threshold. [1]


Optimizing Power Consumption Of Freight Railroad Bearings Using Laboratory Experimental Data, Carlos E. Lopez Iii, Constantine Tarawneh, Arturo A. Fuentes, Harry Siegal Jul 2020

Optimizing Power Consumption Of Freight Railroad Bearings Using Laboratory Experimental Data, Carlos E. Lopez Iii, Constantine Tarawneh, Arturo A. Fuentes, Harry Siegal

Mechanical Engineering Faculty Publications and Presentations

Based on projected freight truck fuel efficiency, freight railroad and equipment suppliers need to identify, evaluate and implement technologies and/or operating practices to maintain traditional railroad economic competitiveness. The railway industry uses systems that record the total energy efficiency of a train but not energy efficiency or consumption by components. Lowering the energy consumption of certain train components will result in an increase in its overall energy efficiency, which will yield cost benefits for all the stakeholders. One component of interest is the railroad bearing whose power consumption varies depending on several factors that include railcar load, train speed ...


Estimating The Inner Ring Defect Size And Residual Service Life Of Freight Railcar Bearings Using Vibration Signatures, Jennifer Lima, Constantine Tarawneh, Jesse Aguilera, Jonas Cuanang Jul 2020

Estimating The Inner Ring Defect Size And Residual Service Life Of Freight Railcar Bearings Using Vibration Signatures, Jennifer Lima, Constantine Tarawneh, Jesse Aguilera, Jonas Cuanang

Mechanical Engineering Faculty Publications and Presentations

There are currently two primary wayside detection systems for monitoring the health of freight railcar bearings in the railroad industry: The Trackside Acoustic Detection System (TADS™) and the wayside Hot-Box Detector (HBD). TADS™ uses wayside microphones to detect and alert the train operator of high-risk defects. However, many defective bearings may never be detected by TADS™ since a high-risk defect is a spall which spans about 90% of a bearing’s raceway, and there are less than 30 systems in operation throughout the United States and Canada. HBDs sit on the side of the rail-tracks and use non-contact infrared sensors ...


Study Of Temperature Profile In Drying Process, Shaxnoza Abduvaxitovna Sultanova, Jasur Esirgapovich Safarov, Tojiniso Tursunboyevna Raxmanova Jul 2020

Study Of Temperature Profile In Drying Process, Shaxnoza Abduvaxitovna Sultanova, Jasur Esirgapovich Safarov, Tojiniso Tursunboyevna Raxmanova

Chemical Technology, Control and Management

The article describes the simulation of the temperature field in a wide range of structural and operational parameters of the drying process. A qualitatively new representation of the temperature field profile in the chamber is revealed. As a result of the experiments, criteria were found for the unevenness of the temperature profiles on the pallets of the dispersion of the temperature of the material and the slope of the approximating line at fixed values of the average temperature of the substance. In the course of the work, an interrelation between the criteria of unevenness was revealed, which is clearly manifested ...


Optimization Of Railroad Bearing Health Monitoring System For Wireless Utilization, Jonas Cuanang, Constantine Tarawneh, Martin Amaro Jr., Jennifer Lima, Heinrich D. Foltz Jul 2020

Optimization Of Railroad Bearing Health Monitoring System For Wireless Utilization, Jonas Cuanang, Constantine Tarawneh, Martin Amaro Jr., Jennifer Lima, Heinrich D. Foltz

Mechanical Engineering Faculty Publications and Presentations

In the railroad industry, systematic health inspections of freight railcar bearings are required. Bearings are subjected to high loads and run at high speeds, so over time the bearings may develop a defect that can potentially cause a derailment if left in service operation. Current bearing condition monitoring systems include Hot-Box Detectors (HBDs) and Trackside Acoustic Detection Systems (TADS™). The commonly used HBDs use non-contact infrared sensors to detect abnormal temperatures of bearings as they pass over the detector. Bearing temperatures that are about 94°C above ambient conditions will trigger an alarm indicating that the bearing must be removed ...


Reinforcing The Strength Of Gear Shaft Teeth With High Performance, N. Turakhodjaev, Sh. Chorshanbiev, N. Sadikova, J. Egamshukurov Mar 2020

Reinforcing The Strength Of Gear Shaft Teeth With High Performance, N. Turakhodjaev, Sh. Chorshanbiev, N. Sadikova, J. Egamshukurov

Technical science and innovation

This article presents the results of the research on the development of the technology of increasing the service life of the sheets in the working conditions of the casting at the Central Repairs and Mechanical Plant at the Almalyk Mining and Metallurgy Refinery (CPC). One of the factors that led to the loss of Val schisternia was the study of the appearance, rupture and dental breakdown of the working surfaces, which led to increased production costs. Analyzes have shown that thermal processing and so-called thermal processing are recommended to increase the working capacity of the plants and factories at the ...


Room Management Web Application And Movement And Temperature Sensors, Visalbotr Chan, Huy Anh Duong Mar 2020

Room Management Web Application And Movement And Temperature Sensors, Visalbotr Chan, Huy Anh Duong

Computer Engineering

There are three main parts of this system: micro-controller, database, and website. Micro-controller detects motion of people walking in and out and It also measures room temperature and humidity in a confined space then updates collected data to the database. Our system’s database contains 6 main columns: room number, room capacity, number of students, temperature in Celsius, humidity in percent and date created. Finally, this database is queried by the website to display the information on the webpage. Users could also navigate on our site to check the most and least occupy rooms, and they can also search for ...


Esophageal Temperature Mapping And Monitoring Sheath, Nicole M. Rogers, Hillary Johnson, Alexander Silva Mar 2020

Esophageal Temperature Mapping And Monitoring Sheath, Nicole M. Rogers, Hillary Johnson, Alexander Silva

Biomedical Engineering

The purpose of this document is to provide a product development summary for an accessory device that joins an esophageal temperature probe and a mapping catheter together to be used during cardiac ablation. Catheter ablation therapy is performed in the left atrium, utilizing extremely hot or cold temperatures to create scar tissue and treat atrial fibrillation and other arrhythmias. The close positioning of the left atria adjacent to the esophagus presents a large risk as the extreme temperatures used during ablation can lead to esophageal damage or fistulas. This device is designed to integrate correlate data from the temperature probe ...


Diy Incubator, Aryan Zia, Grace Spurlock, Garrett Janney Mar 2020

Diy Incubator, Aryan Zia, Grace Spurlock, Garrett Janney

Biomedical Engineering

This project report provides detailed information on designing and building a DIY Incubator. The device is indicated for growing and maintaining BSL-1 mammalian or bacterial cell culture with a temperature control in the range of 25-45°C ± 1°C. The device is made fully programmable via an Arduino, and is structurally designed to fit two T75 cell culture flasks at a time. The device is able to return to a specified temperature set point within 10 minutes and maintains 5% CO2 partial pressure conditions. The incubator has a small physical footprint, with an overall dimension of 22in x 16in x ...


Caracterización De La Variabilidad Del Recurso Eólico, Sergio Stiven Salamanca Forero Jan 2020

Caracterización De La Variabilidad Del Recurso Eólico, Sergio Stiven Salamanca Forero

Ingeniería Eléctrica

La generación de energía eléctrica a partir de fuentes renovables ha significado uno de los mayores avances tecnológicos en las últimas décadas, esto gracias a su aporte para disminuir la contaminación que se produce utilizando combustibles fósiles como fuente principal y además ofrecer un soporte en materia de seguridad energética. La tendencia de utilizar cada vez más alternativas de generación con energías renovables se encuentra en crecimiento permanente y por esto resulta de vital importancia estudiar más este campo para así lograr facilitar la integración de estas en la red actual.

En el presente trabajo se centra en un tipo ...


Field Assessment Of Interreplicate Variability From Eight Electromagnetic Soil Moisture Sensors, Tsz Him Lo, Daran Rudnick, Jasreman Singh, Hope Njuki Nakabuye, Abia Katimbo, Derek M. Heeren, Yufeng Ge Jan 2020

Field Assessment Of Interreplicate Variability From Eight Electromagnetic Soil Moisture Sensors, Tsz Him Lo, Daran Rudnick, Jasreman Singh, Hope Njuki Nakabuye, Abia Katimbo, Derek M. Heeren, Yufeng Ge

Biological Systems Engineering: Papers and Publications

Interreplicate variability—the spread in output values among units of the same sensor subjected to essentially the same condition—can be a major source of uncertainty in sensor data. To investigate the interreplicate variability among eight electromagnetic soil moisture sensors through a field study, eight units of TDR315, CS616, CS655, HydraProbe2, EC5, 5TE, and Teros12 were installed at a depth of 0.30 m within 3 m of each other, whereas three units of AquaSpy Vector Probe were installed within 3 m of each other. The magnitude of interreplicate variability in volumetric water content (θv) was generally similar between ...