Regulations Of Hydraulic Resistance Of Machine Channels Of Pumping Stations,
2020
Tashkent Institute of Irrigation and Agricultural Mechanization Engineers
Regulations Of Hydraulic Resistance Of Machine Channels Of Pumping Stations, D.R. Bazarov, B.R. Uralov, M.P. Tashkhanova
Irrigation and Melioration
The paper considers the general equation of fluid motion in the channels and the functional dependences of the hydraulic friction coefficient on the Reynolds number, relative roughness, and on the shape of the live section of the channel. Resistance formulas are given for the simplest cross-sectional shapes of channels and for channels with a more complex cross-sectional shape. To take into account the effect (on the pressure loss) of the channel cross-sectional shape and the presence of a flow with a free surface in it, additional correction factors are introduced (using the hydraulic radius concept) and be clarified as a …
Studying The Movement Of Crop Drined Seeds Of Cottage On A Slope Tray In A Protective Machine,
2020
“Pakhtasanoat Ilmiy Markazi” JSC
Studying The Movement Of Crop Drined Seeds Of Cottage On A Slope Tray In A Protective Machine, R.K. Djamolov, A.A. Akrаmov, K. Djamolov
Irrigation and Melioration
The article presents the results of a theoretical study of the movement of pubescent cotton seeds along an inclined guide in a pickling machine. Equations are obtained that describe the movement of the seed along the inclined tray of the dresser. A formula is derived for determining the time of movement of the seed on an inclined one to the dressing agent. A plot of the change in the speed of the seed in the tray on the change in the angle of inclination and on the value of the movement of the seed. To increase the feed rate of …
Modernization Of Functions Of Management Of Land Use In The Conditions Of Innovative Economy,
2020
Tashkent Institute of Irrigation and Agricultural Mechanization Engineers
Modernization Of Functions Of Management Of Land Use In The Conditions Of Innovative Economy, Sh.K. Narbaev
Irrigation and Melioration
Land use management, as a complex material-abstract system, is carried out through a number of its functions. The article provides an analysis of the functions of land management, improved the content of some functions and introduced additional new functions in the context of the development of an innovative economy. It is noted that improving the management system will increase the efficiency of land use, improve their environmental status, preserve landscape ecosystems based on the accelerated development of innovative activities. New land management functions are recommended: innovative land use development, territory development, land use technical support, remote study of land properties …
Combined Installation Photo Thermal Battery - Electric Water Heater To Provide Electricity And Water To Rural Households,
2020
Physical-technical institute of SPA “Physics-Sun” of the Academy of Science of Uzbekistan
Combined Installation Photo Thermal Battery - Electric Water Heater To Provide Electricity And Water To Rural Households, R.A. Muminov, M.N. Tursunov, Х. Sabirov, U.R. Kholov, Т.Z. Аkhtamov, М. Eshmuradova
Irrigation and Melioration
The article presents the experimental results of the study of the parameters of a combined installation photo thermal battery – electric heater, used to provide electric energy and water to rural households. Photo thermal battery is made on the basis of photovoltaic batteries of crystalline silicon with an efficiency of ~ 20 %. Cellular polycarbonate was used as a heat sink. When creating the KU based on photo thermal battery EVN, modern efficient batteries, controllers, inverters and consumers of electric energy were used, and Ariston was chosen as the EVN. KU is adapted to climatic conditions, effectively and reliably provides …
Modeling The Movement Of A Heap In A Dielectric Sorting Device For Alfalfa Seeds,
2020
Tashkent Institute of Irrigation and Agricultural Mechanization Engineers
Modeling The Movement Of A Heap In A Dielectric Sorting Device For Alfalfa Seeds, A. Lee, Z. Sharipov, M.N. Sattarov
Irrigation and Melioration
This article presents a theoretical study of modeling the movement of a mixture in a dielectric sorting plant for alfalfa seeds. Theoretical studies were carried out using the general laws of mechanics and mathematical modeling of alfalfa seeds, taking into account their physical and mechanical properties. The results of a theoretical study on modeling the detachment conditions of alfalfa seed heap particles and particle dynamics along the casing and pitched boards of a dielectric sorting device are presented. The differential equation with the initial conditions was solved by numerical methods of "Runge-Kutta-Felberg" with automatic step selection. The components of a …
Conceptual Approaches To Improve Quality Of The Process Of Preparation Energy Personnel For Agricultural Sector Of Economy,
2020
Tashkent Institute of Irrigation and Agricultural Mechanization Engineers
Conceptual Approaches To Improve Quality Of The Process Of Preparation Energy Personnel For Agricultural Sector Of Economy, A. Radjabov
Irrigation and Melioration
The article highlights problems of training energy personnel for agricultural sector and conceptual, principle and practical approaches to their solution based on goals and objectives outlined in concept of development of higher education system in Uzbekistan until 2030 and Strategy for development of agriculture Republic of Uzbekistan for 2020 - 2030
About Improvement Of Support Of Innovative Activity Of Higher Education By The State,
2020
Bukhara State University
About Improvement Of Support Of Innovative Activity Of Higher Education By The State, A.E. Norov
Irrigation and Melioration
This article provides information on regulatory acts in support of innovative activities in the field of higher education. It is also indicated that the fact that the scientific activities of universities are not organized based on the prospects for socio-economic development of regions, forecasting innovative development based on analysis and effectiveness of innovations, research results, commercialization of scientific developments, and the involvement of talented youth in research, is the reason for the lack of reliable integration of education, science and production. It is necessary to improve the internal system of competitions, programs and projects aimed at supporting the commercialization of …
Lstm-Based Anomaly Detection For Non-Linear
Dynamical System,
2020
Beijing University of Posts and Telecommunications
Lstm-Based Anomaly Detection For Non-Linear Dynamical System, Yue Tan, Chungjing Hu, Kuan Zhang, Kan Zeng, Ethan A. Davis, Jae Sung Park
Department of Mechanical and Materials Engineering: Faculty Publications
Anomaly detection for non-linear dynamical system plays an important role in ensuring the system stability. However, it is usually complex and has to be solved by large-scale simulation which requires extensive computing resources. In this paper, we propose a novel anomaly detection scheme in non-linear dynamical system based on Long Short-Term Memory (LSTM) to capture complex temporal changes of the time sequence and make multi-step predictions. Specifically, we first present the framework of LSTM-based anomaly detection in non-linear dynamical system, including data preprocessing, multi-step prediction and anomaly detection. According to the prediction requirement, two types of training modes are explored …
Flooding, Landslides, Wildfires, Air Pollution, And Income: Risk In California,
2020
Gettysburg College
Flooding, Landslides, Wildfires, Air Pollution, And Income: Risk In California, Brittany Bondi, Alyssa J. Kaewwilai
Gettysburg Social Sciences Review
California is infamously known for its likelihood of environmental hazards such as flooding, landslides, air pollution, and forest fires which can be attributed to the natural climate of the area as well as anthropologically influenced climate change. Air pollution also poses potential threats and dangers to the civilians of California as increasing populations and uses of fossil fuels continue to contribute to the growing issue of climate change. The goal of this study was to examine and analyze the geospatial trends environmental hazards in California such as landslides, air pollution, flooding, and forest fires. A weighted test, zone and slope …
Tension-Tension Fatigue Behavior Of Nextel™ 720/Alumina-Mullite Ceramic Composite At 1200°C In Air And In Steam,
2020
Air Force Institute of Technology
Tension-Tension Fatigue Behavior Of Nextel™ 720/Alumina-Mullite Ceramic Composite At 1200°C In Air And In Steam, Sarah A. Witzgall
Theses and Dissertations
Uniaxial tension-tension fatigue performance of an oxide-oxide continuous fiber ceramic composite was studied at 1200°C in laboratory air and in steam. The composite is reinforced with laminated, 0/90 mullite/alumina (NEXTEL™720) fibers woven in an eight-harness satin weave and has a porous alumina/mullite matrix. There is no interphase between the fiber and matrix. The composite relies on the porous matrix for crack deflection and flaw tolerance. Tension-tension fatigue was examined for maximum stresses of 45 – 136 MPa in air and in steam. To assess the effects of the steam environment on fatigue performance, experimental results obtained in air are compared …
Mechani-Kits Senior Design Project,
2020
California Polytechnic State University, San Luis Obispo
Mechani-Kits Senior Design Project, Jake Utley, Sophie Carson, Vincent Seguin
Mechanical Engineering
Studies suggest that when designed and executed well, hands-on activities can enhance student understanding of key mechanics concepts. Current products are expensive and typically not designed to meet a variety of learning objectives. Through the Mechanics of Inclusion and Inclusivity in Mechanics grant, the Cal Poly Physics and Engineering Departments are seeking to incorporate new hands-on activities into their courses. Our team has designed three inexpensive ”MechaniKits” to be used in physics, statics and dynamics courses [1]. This Final Design Review outlines our findings, objectives, and final designs for this project. It also explains our manufacturing and design verification plans. …
Me-Em Enewsbrief, June 2020,
2020
Michigan Technological University
Me-Em Enewsbrief, June 2020, Department Of Mechanical Engineering-Engineering Mechanics, Michigan Technological University
Department of Mechanical and Aerospace Engineering eNewsBrief
No abstract provided.
Calculating Elastic Properties Of Confined Simple Fluids,
2020
New Jersey Institute of Technology
Calculating Elastic Properties Of Confined Simple Fluids, Christopher D. Dobrzanski
Dissertations
Confinement in nanoporous materials is known to affect many properties of the fluids confined within their pores. The elastic properties are no exception. This dissertation begins with an overview of the relevant literature on ways of obtaining elastic properties of confined fluids. It outlines some fundamental gaps in our understanding. The chapters following address some of these gaps in understanding elastic properties of the confined fluid, in particular, how the shape of the confining pore matters, how supercriticality effects the properties, how an equation of state designed for confined fluids can be used to calculate elastic properties, and if an …
Fly Ash Based Geopolymer For High Temperature And High Compressive Strength Applications In Aggressive Environment,
2020
CUNY New York City College of Technology
Fly Ash Based Geopolymer For High Temperature And High Compressive Strength Applications In Aggressive Environment, Aaryan Manoj Nair, Akm S. Rahman
Publications and Research
Geopolymers are the results of geosynthetic reactions between aluminosilicates and strong bases. This results in chemical bonds between aluminum (Al), Silicon (Si)and oxygen (O) composing polymer rings in tetrahedral coordination. These bonds give them widespread useful applications such as high heat bearing ceramics, and base construction material whilst being far more environmentally conscious. The purpose of the experiment is to examine the effect of Silicon Carbide whisker and inorganic glass particles on thermal and mechanical properties of Geopolymers. This study will help understand the effect of various compositions and concentrations of SiO2 in mechanical strength. In this experiment, the …
Aps March Meeting 2020: Undergraduate-Friendly Research In Soft Matter And Beyond,
2020
Lincoln University
Aps March Meeting 2020: Undergraduate-Friendly Research In Soft Matter And Beyond, Vianney Gimenez-Pinto
Title III Professional Development Reports
The in-person APS March Meeting 2020 taking place in Denver during March 02-06, 2020 was canceled in the last minute out of Covid-19 concerns for the well-being of the scientific community as well as the population of the city of Denver and the state of Colorado. Nevertheless, well-planned logistics by the physics community and the APS leadership, allowed attendants to share their findings, presenting their research works to their peers, and continuing the work towards the advancement of science. Given the historical and on-going under-representation of students of color in science and technology at all academic levels, there is a …
Tympanal Asymmetry In A Parasitoid Fly: Small Asymmetries Produce Big Gains,
2020
Virginia Polytechnic Institute and State University
Tympanal Asymmetry In A Parasitoid Fly: Small Asymmetries Produce Big Gains, Max Mikel-Stites, Anne E. Staples
Biology and Medicine Through Mathematics Conference
No abstract provided.
Structure, Thermophysical Properties Of Liquids, And Their Connection With Glass Formability,
2020
Washington University in St. Louis
Structure, Thermophysical Properties Of Liquids, And Their Connection With Glass Formability, Rongrong Dai
McKelvey School of Engineering Graduate Student Theses & Dissertations
Metallic glasses have drawn significant attention due to their unique properties, such as high strength, excellent elastic energy storage capacity, and versatile processability. However, why some liquids can easily form metallic glasses while others donմ is still unclear. Since metallic glasses are formed when liquids are cooled fast enough to bypass crystallization, we hope to better understand glass formation by investigating the structural evolution and thermophysical properties of the liquids as they are cooled toward the glass transition. Multiple molecular dynamics simulations suggest a crossover temperature for the dynamics near the liquidus temperature, which corresponds to the onset of cooperative …
First-Principles Studies Of Anion Engineering In Functional Ceramics,
2020
Washington University in St. Louis
First-Principles Studies Of Anion Engineering In Functional Ceramics, Steven Timothy Hartman
McKelvey School of Engineering Graduate Student Theses & Dissertations
Ceramic materials display a wide variety of valuable properties, such as ferroelectricity, superconductivity, and magnetic ordering, due to the partially covalent bonds which connect the cations and anions. While many breakthroughs have been made by mixing multiple cations on a sublattice, the equivalent mixed-anion ceramics have not received nearly as much attention, despite the key role the anion plays in the materials’ properties. There is great potential for functional ceramics design using anion engineering, which aims to tune the materials properties by adding and removing different types of anions in existing classes of ceramic materials. In this dissertation, I present …
Scalable Synthesis Of Nanostructured Metal Oxide Films Using Aerosol Chemical Vapor Deposition For Energy Storage Applications,
2020
Washington University in St. Louis
Scalable Synthesis Of Nanostructured Metal Oxide Films Using Aerosol Chemical Vapor Deposition For Energy Storage Applications, Clayton Kacica
McKelvey School of Engineering Graduate Student Theses & Dissertations
As global energy consumption continues to rapidly increase, the need for new technologies to meet this demand in a sustainable way. Renewable sources such as solar and wind power are being increasingly utilized for electricity generation. However, the intermittent nature of these sources requires large-scale energy storage to reliably provide consistent power. Current grid-scale energy storage usually involves pumped hydroelectric systems, which are limited by location, or flywheel systems, which have limited use in high-power low-energy applications. Electrochemical storage solutions, such as lithium-ion batteries, provide robust energy storage that is not limited by location with a range of power and …
The Development Of All Solid-State Optical Cryo-Cooler,
2020
Doctoral Student, Optical Science and Engineering
The Development Of All Solid-State Optical Cryo-Cooler, Junwei Meng
Optical Science and Engineering ETDs
This dissertation describes the development of an all solid-state optical cryo-cooler. Crystals of 10% wt. ytterbium-doped yttrium lithium fluoride (Yb3+:YLF) are used to cool an infrared HgCdTe sensor payload to an absolute temperature below 135 K, equivalent to delta T equal 138 K below ambient. This record level of cooling is accomplished with a single stage, in a completely vibration-free environment, with a corresponding cooling power of 190 mW. This milestone is made possible by the design and fabrication of an undoped YLF thermal link that efficiently shields the payload with a non-right angle kink from intense anti-Stokes …
