Geological Engineering Commons^™

The 2019 Raikoke Eruption As A Testbed Used By The Volcano Response Group For Rapid Assessment Of Volcanic Atmospheric Impacts, Jean Paul Vernier, Thomas J. Aubry, Claudia Timmreck, Anja Schmidt, Lieven Clarisse, Fred Prata, Nicolas Theys, Andrew T. Prata, Graham Mann, Hyundeok Choi, Simon Carn, Richard Rigby, Susan C. Loughlin, John A. Stevenson

Michigan Tech Publications

The 21 June 2019 Raikoke eruption (48°N, 153°E) generated one of the largest amounts of sulfur emission to the stratosphere since the 1991 Mt. Pinatubo eruption. Satellite measurements indicate a consensus best estimate of 1.5Tg for the sulfur dioxide (SO2) injected at an altitude of around 14-15km. The peak Northern Hemisphere (NH) mean 525gnm stratospheric aerosol optical depth (SAOD) increased to 0.025, a factor of 3 higher than background levels. The Volcano Response (VolRes) initiative provided a platform for the community to share information about this eruption which significantly enhanced coordination efforts in the days after the eruption. A multi-platform …

Engineering And Geological Zoning Of The Distribution Areas Of The Eocene Clays Of Northern Tamdytau, Mirabbas Mirsaatovich Zakirov, Inobat Abduvaxidovna Agzamova, Dilshod Kalandarovich Begimkulov, Golibjon Ernazar Ogli Ochilov, Temur Makhmarajabovich Khudoyberdiyev, Dastan Jamal Uli Madiyarov

Technical science and innovation

The article discusses scientific research on the integrated assessment of the problem of ensuring the sustainability of buildings and structures for industrial and civil purposes. The relevance is due to the development of various zoning methods to establish territories with reliable results on the spread of special soils. Especially in cases where swelling clays are common in the territory, characterized by high sensitivity to weather and climatic conditions. Based on the above, the purpose of engineering and geological zoning of the areas of distribution of Eocene clays of Northern Tamdytau was to identify areas of new construction, to ensure the …

Development Of Agar-Based Preformed Particle Gel For Water Control In High-Salinity Reservoirs, Ahmed Ben Ali, Reem Elaf, Abdulaziz A. Almakimi, Mohammed Saad, Ibnelwaleed A. Hussein, Baojun Bai

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

Oil Extraction Faces Challenges in Cost and Complexity Due to Excessive Water Production, Leading to Diminished Hydrocarbon Recovery. Preformed Particle Gels (PPGs) Hold Promise for Enhancing Oil Recovery and Sealing High-Permeability or Fractured Zones. However, Current PPGs Encounter Limitations in High-Temperature Reservoirs, Including Salt Sensitivity and Potential Hazards. to Address These Issues, We Propose Eco-Friendly PPGs Utilizing Agar Polysaccharides. Agar Backbones Grafted with Acrylamide (AM) and AM/N,N′-Methylenebis(AM) (MBA) Via Microwave-Assisted Techniques Resulted in Polyacrylamide Grafted Agar (Ag/PAM) and Cross-Linked Polyacrylamide Grafted Agar (Ag/PAMBA). Various Sizes (75 Μm to 1.18 Mm) Were Prepared to Accommodate Diverse Reservoir Porosities and Ensure Effective …

Regular Algorythms For Synthesis Of Optimal Control Systems For Dynamic Objects, Igamberdiyev Husan, Uktam Farkhodovich Mamirov, Xankeldiyeva Zebiniso

Technical science and innovation

The article presents algorithms for the synthesis of an optimal control system for dynamic objects. As a model, we consider a differential equation of a continuous one-dimensional system in the form of a state space, which has the properties of controllability and observability. The paper shows the need to use an observation device in order to assess how the properties of the controlled system change with the slightest change in the parameters of the control object, to assess the sensitivity of the system to these changes. When finding a solution to the equation formulated to find the parameters of the …

Studying The Production Of Nanocelluloses, Shohzodbek Abduvahobovich Rashidov, Elmurod Abduqodirovich Egamberdiev, Sadritdin Maxamatdinovich Turabdjanov

Technical science and innovation

Nanoscience is a broad field that includes nanophysics and nanochemistry. Nanotechnologies are aimed at obtaining nanoparticles with new properties and creating materials and devices based on them. This is one of the modern trends in the development of science in the 21st century.

Based on the study of information about nano-sized materials, the mechanisms of their production and changes in their properties, we will consider the technology for producing nanocellulose from organic substances, i.e. from cellulose. The article describes a technology that examines devices for producing nanocellulose and the principles of their operation, as well as a combined method of …

The Results Of Hydrodynamic Studies On Stationary And Non-Stationary Filtration Modes On The Example Of The Kruk Deposit, Nazirila Maxmudov, Nargiza Akhmedova, Saodat Shukurullaeva

Technical science and innovation

The article presents the results of gas-hydrodynamic studies at the Kruk field, using methods of steady selection and pressure recovery based on stationary and unsteady modes, which were carried out according to the well research methodology, which prescribes the separation into phases of the entire productive flow of the gas-liquid mixture in the separator, in which, under various separation modes, the amount of liquid phase, namely gas condensate and formation water, was separated and measured.. A mobile full-flow separation installation was used as a separator. The condensate output was measured in a calibrated container using a measuring ruler, which made …

Using Unmanned Aircraft System (Uas)-Borne High-Resolution Hyperspectral Imaging And Gamma Radiometry For Rare Earth Element Exploration In The Bearpaw Mountains, Montana Usa, Emma Kamp

Graduate Theses & Non-Theses

The radiometric signature of thorium, in combination with the hyperspectral signature of carbonate minerals, can be a useful indicator of rare earth mineral occurrences in air-borne geophysical exploration. Recent technological advancements have allowed unmanned aircraft system (UAS)--borne spectral imaging and gamma-ray spectroscopy systems to acquire high-spatial-resolution data. In this study, we attempted to define and map an area of interest for rare earth mineral exploration using UAS-borne spectral and gamma-ray spectroscopy systems. Gamma-ray spectroscopy data were used to define an area of interest. Short-wave infrared imagery was used to detect and map carbonate minerals within the area of interest. Gamma-ray …

Improvement Of The Seismic Safety System For The Population And Territory Of The Republic Of Uzbekistan, Muslima Аbdurakhimkho‘Jayeva, Oyqiz Yokubjonova, Oydin Khasanova Docent

Technical science and innovation

Central Asian seismologists show high magnitudes of potential future earthquakes (8 and higher), which corresponds to a probable level of macroseismic intensity of 9 or more points. Considering that zones with a high level of seismic hazard coincide with densely populated areas, as well as taking into account the seismic vulnerability of existing buildings, it can be stated that in Each existing level of seismic risk is very high and the consequences of future earthquakes can be catastrophic.

In recent years, large-scale comprehensive measures have been implemented in the Republic of Uzbekistan to develop the fields of seismology, ensure earthquake …

Comparative Analysis Of Cutting Forces In Axial-Compliant And Rigid Chamfering Tools, Sultonmurod Bekpulatovich Normatov, Oybek Tuyboyov, Azimjon Axror O'G'Li Pardayev, Alisher G‘Ayratjon Ogli Boratov, Shohjahon Tuxtasin Ogli Abdullayev

Technical science and innovation

This study delves into the analysis of cutting forces in axial-compliant systems, focusing specifically on the comparison between axially spring-compensated 90° conical tools and rigid chamfering tools. The research incorporates a predictive model for chamfer size calculation in the axially spring-compensated tools, verified through experimental tests on representative parts. The study aims to control chamfer size within tolerances by adjusting process conditions and optimizing processing efficiency. By exploring the fundamentals of the chamfering process, this research offers insights into breaking sharp edges on components with positional errors and shape deformations, with a particular emphasis on aero-engine casings. The integration of …

Near-Collapse Of The Geomagnetic Field May Have Contributed To Atmospheric Oxygenation And Animal Radiation In The Ediacaran Period, Wentao Huang, John A. Tarduno, Tinghong Zhou, Mauricio Ibañez-Mejia, Laércio Dal Olmo-Barbosa, Edinei Koester, Eric G. Blackman, Aleksey V. Smirnov, Gabriel Ahrendt, Rory D. Cottrell, Kenneth P. Kodama, Richard K. Bono, David G. Sibeck, Yong Xiang Li, Francis Nimmo, Shuhai Xiao, Michael K. Watkeys

Michigan Tech Publications

Earth’s magnetic field was in a highly unusual state when macroscopic animals of the Ediacara Fauna diversified and thrived. Any connection between these events is tantalizing but unclear. Here, we present single crystal paleointensity data from 2054 and 591 Ma pyroxenites and gabbros that define a dramatic intensity decline, from a strong Proterozoic field like that of today, to an Ediacaran value 30 times weaker. The latter is the weakest time-averaged value known to date and together with other robust paleointensity estimates indicate that Ediacaran ultra-low field strengths lasted for at least 26 million years. This interval of ultra-weak magnetic …

Developing Relationships Between Macroporosity And Tensile Strength By Imaging Failure Planes, James C. Mazzagotte Iii

Boise State University Theses and Dissertations

Porosity, which measures the empty spaces within rock structures, is crucial for determining properties like density, hydraulic conductivity, and mechanical strength, covering both microporosity and macroporosity. While many studies have explored how porosity affects compressive strength and stiffness in different rock types, less attention has been paid to its influence on tensile strength, especially in extrusive igneous formations like vesicular basalt. This research aims to fill this gap by investigating the relationship between macroporosity and tensile strength in vesicular basalt.

The study employed non-destructive techniques, including machine learning and manual image analysis, to calculate porosity, dividing it into specimen porosity …

A Tilted Broad Plume Underneath The Greenland Cratonic Keels, Dan Wang, Stephen S. Gao, Yangyang Liao, Kelly H. Liu

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

To advance our comprehension of the complex geological history and mantle dynamics in the north atlantic region, we employ all available broadband seismic data recorded in greenland to reveal an abnormal mantle transition zone (mtz) structure. Central and eastern greenland exhibits depressed 410 and 660 km discontinuities (d410 and d660, respectively) bordering the mtz, indicative of a substantial thermal anomaly associated with an underlying plume, surpassing the 1,800°c threshold for post-garnet phase transitions at the d660. Variations in mtz thickness across greenland stem from differing temperature anomalies at the d410 and d660, possibly linked to a tilted plume within the …

Reducing Glass Loss During Transportation And Storage, Abdulaziz Muzafarovich Qurbanov, Mirzaabdullayev Jaxongir Baxtiyorovich

Technical science and innovation

The article discusses the processes of transportation and storage of sheet glass in the production of protective glass for cars. The experience of organizing the transportation and storage of glass in developed countries of the world was analyzed in order to study the problems of losses of raw materials during the transportation and storage of laminated glass, as well as to develop and approve a regulatory and technical document. in this field. The supplies of various brands of polished laminated glass used in the production of protective glass for cars to Avtooina LLC from different addresses, from different manufacturers were …

Main Prospects Of Natural Gas Purification Technologies From Acidic Compounds, Oybek Yusupdjanovich Aripdjanov, Diyora Zokhid Qizi Khayrullaeva, Jonibek Avazek Ogli Abdumuminov

Technical science and innovation

The article discusses the main prospects for the technology of purifying natural gas from acidic components and the problems of ensuring the purity of oil and gas products in accordance with state standards. An increase in the degree of purification from H₂S, CO₂, elemental sulfur, carbonyl sulfide, ethyl mercaptans (thiols), methyl mercaptan, carbon disulfide, sulfides, disulfides (dithioethers), thiophene, sulfoxides and sulfones is considered. Also, the physicochemical properties of the absorbent for the purification of sulfur compounds (generated during natural gas processing) are studied. Based on the study of various absorbents (ethanolamine (EA), methylethanolamine (MEA), diethanolamine (DEA), …

Ferroresonance In Three-Phase Electrical Networks, Shavkat Ernstovich Begmatov

Technical science and innovation

Possible modes of ferroresonance in three-phase electric networks and analysis of substitution schemes where ferroresonance voltage increase is observed are considered. The most complete magnetization curve of the transformer core and the analysis of the generalized equivalent substitution scheme are presented, as a result of which more accurate formulas for determining the values of equivalent parameters of the electrical network and voltage transformer in ferroresonance mode are obtained. Factor of ferroresonance voltage increase is introduced, which determines ratio between amplitude values of transformer phase voltage and mains voltage. The method of determination of boundary conditions of steady ferroresonance voltage increase …

Well Log Analysis And Interpretation For Mishrif Formation For Amarah Oil Field, Attia Attia, Ayat Ahmed Jasim, Aqeel Al-Adili, Luma Mahmoud, Mohamed Mansour Eng.

Petroleum Engineering and Gas

This study is intended to interpret of well logs for the purpose of determining petrophysical parameters for Mishrif formation in the Amarah Oil Field. This fi eld is situated in the province of Mysan ten kilometers to the southwest of Amarah and ten kilometers to the northwest of Halafaya’s fi eld, and is located southeast of the fi eld of Kamit and about 30 km. M–N cross plot as well as the Matrix Identifi cation (MID) have been applied to calculate mineralogy and lithology of the formation using well logs, cross plots, and reservoir quality index (RQI) along with fl …

Ore-Generating Role Of The Focal Structure During The Formation Of Apogranitoid Tungsten Mineralization At The Yakhton Deposit, Mekhroj Nurillaevich Jurayev, Abdulla Rovilovich Almordonov, Bayramali Uygunovich Mukhammadiev

Technical science and innovation

The article analyses the ore-generating role of the focal structure during the formation of apogranitoid tungsten mineralization at the Yakhton deposit. The Yakhton ore field, within which apogranitoid tungsten mineralization has been identified, is confined to a deep focal structure, expressed by polychronic magmatism with a combination in the area of rocks of granitoid, lamprophyre and alkali-basaltoid complexes, as well as fluid-explosive breccias. The structure is confined to a tectonic node, expressed by the intersection of faults in the northwestern, meridional and northeastern directions. These faults predetermined large shear movements and flexural bending of the overall plicative structure, as a …

Implementing A Solar Photovoltaic Station In Watering Systems Utilizing Complex Software, Akbarxon Sarvar O'G'Li Uroqov, Faxriddin Jaylovovich Nosirov, G'Olibjon Pardayevich Arzikulov, Zarina Amriddin Qizi Sayfutdinova

Technical science and innovation

This article explores the benefits of transitioning from traditional agricultural irrigation systems to more cost-effective alternatives powered by renewable energy sources. By integrating solar photovoltaic technology into irrigation processes, significant reductions in resource wastage, estimated at 45-50%, are achievable through the implementation of drip irrigation techniques. This results in enhanced agricultural productivity. Moreover, the utilization of solar panels in green zones mitigates surface temperature increases, contributing to a 2-5% boost in electricity production. Currently, irrigation facilities primarily rely on the main energy grid. However, transitioning to renewable energy sources decreases reliance on non-renewable fuels, reduces greenhouse gas emissions, and fosters …

Research Of The Influence Of Dust On Photovoltaic Modules, Anvarjon Mirolimov, Xalmurat Iliev

Technical science and innovation

The influence of dust concentrations on the current-voltage characteristics (voltampere characteristics) of photovoltaic modules (PVM) based on crystalline silicon in laboratory conditions. It was investigated how an uncleaned panel affects the output power. The tests were carried out in the city of Tashkent on the territory of the “National Research Institute of Renewable Energy Sources”. The objects were located co-plurally as specified in GOST R 60904-1 Photoelectric devices. Part 1. Measurement of current-voltage characteristics. Measurements of a cleaned photovoltaic module with a maximum power of 330 W and not a cleaned one of 236 W were obtained. Based on the …

Quantitative Assessment And Characterization Of Tool Wear Phenomena In Advanced Manufacturing Processes, Oybek Valijonovich Tuyboyov

Technical science and innovation

This paper explores the quantitative assessment and characterization of tool wear phenomena in advanced manufacturing processes, employing a multifaceted approach encompassing traditional measurements, image processing, machine learning, and predictive modeling. The study emphasizes the intricate dynamics of tool wear and its direct impact on cutting tool performance, addressing challenges in real-time monitoring and optimization of machining operations. Traditional methods like VBmax measurement are juxtaposed with advanced techniques such as the improved conditional generative adversarial net with a high-quality optimization algorithm (CGAN-HQOA), efficient channel attention destruction and construction learning (ECADCL), and shape descriptors based on contour, moments, orientations, and texture. Artificial …