Green Roof System Integrated Soil Methods,
2019
CUNY New York City College of Technology
Green Roof System Integrated Soil Methods, Jude R. Vallon, Ivan L. Guzman
Publications and Research
Large metropolitan areas like NYC are seeking to integrate sustainability into retrofitting buildings for the development of green infrastructure. Among the many environmental issues of urbanization, the UHI (urban heat island) effect and storm water runoff are of particular interest when it comes building structures. Individual buildings can contribute towards mitigating these effects with implementation of vegetative rooftops, i.e. Green Roofs. Commercial buildings are currently receiving government incentives and new constructions are required to include green roof installations. However, if existing buildings are considering the addition of a green roof on an existing roof, they have to factor in the …
Suitability Assessment For Integrated Urban Development In Makkah City Of Saudi Arabia,
2019
University of Arkansas, Fayetteville
Suitability Assessment For Integrated Urban Development In Makkah City Of Saudi Arabia, Mislat Alotaibi
Graduate Theses and Dissertations
Makkah – the third most populated city in Saudi Arabia with a population of 1,684,408 according to the 2010 demographic survey conducted by the Saudi General Authority for Statistics – is experiencing urban sprawl, which can be defined as an unplanned urban expansion that might degrade the environment and diminish the aesthetic view. This is a persisting problem in Makkah driven by multitude of processes involving the random expansion in its undeveloped land and the removal of its historic mountains surrounding Al-Masjid Al-Haram (the Holy Mosque) in an attempt to push the city limit of urban capacity within its administrative …
Investigating The Accuracy Of One-Dimensional Volcanic Plume Models Using Laboratory Experiments And Field Data,
2019
Washington State University Vancouver
Investigating The Accuracy Of One-Dimensional Volcanic Plume Models Using Laboratory Experiments And Field Data, James S. Mcneal, Graham Freedland, L. G. Mastin, Raúl Bayoán Cal, S. A. Solovitz
Mechanical and Materials Engineering Faculty Publications and Presentations
During volcanic eruptions, model predictions of plume height are limited by the accuracy of entrainment coefficients used in many plume models. Typically, two parameters are used, 𝛼 and 𝛽, which relate the entrained air speed to the jet speed in the axial and cross-flow directions, respectively. To improve estimates of these parameters, wind tunnel experiments have been conducted for a range of cross-wind velocities and turbulence conditions. Measurements are compared directly to computations from the 1-D plume model, Plumeria, in the near-field, bending region of the jet. Entrainment coefficients are determined through regression analysis, demonstrating optimal combinations of effective 𝛼 …
The Researching Some Containig Rocks Of Uranium Ores By Method Of The Thermal Analysis,
2019
Navoi Mining and Metallurgical Combinat, Navoi, Uzbekistan
The Researching Some Containig Rocks Of Uranium Ores By Method Of The Thermal Analysis, K. Sanakulov, M.A. Kurbanov, U.Z. Sharafutdinov
Gorniy vestnik Uzbekistana
The paper presents the results of comparative laboratorial testings physical and chemical properties ion-change resins: BD-706, BO – 020, BO-008, BD-709S, BD- 710M, А-560, А – 508, MS-2040. There are results present, that resins ВО-008, BD-709S, BD-710M and MS 2040 do not comply with requirements ОSТ 95.291-86. Kinet- ics of sorption uranium from sulphuric acid solution and carbonate solution presented, that resin А-560 has the best indexes.
Investigation Of Spectral Characteristics Of Carbonate Rocks – A Case Study On Posht Moleh Mount In Iran,
2019
Shiraz University
Investigation Of Spectral Characteristics Of Carbonate Rocks – A Case Study On Posht Moleh Mount In Iran, A. Imanian, M. H. Tangestani, A. Asadi
Michigan Tech Publications, Part 1
Recent developments in the image processing approaches and the availability of multi and/or hyper spectral remote sensing data with high spectral, spatial and temporal resolutions have made remote sensing technique of great interest in investigations of geological sciences. One of the biggest advantage of the application of remote sensing in geology is recognizing the type of unknown rocks and minerals. In this study, an investigation on spectral features of carbonate rocks (i.e. calcite, dolomite, and dolomitized calcite) were done in terms of main absorptions, the reasons of those absorptions and comparison of these absorption with Johns Hopkins University (JHU) spectral …
Application Of Radar And Optical Satelite Imagery Data In Landslide Potential Mapping Of Shesheer Sub-Catchment In Iran,
2019
Shiraz University
Application Of Radar And Optical Satelite Imagery Data In Landslide Potential Mapping Of Shesheer Sub-Catchment In Iran, A. Imanian, M. H. Tangestani, A. Asadi
Michigan Tech Publications, Part 1
One of the serious dangers which threatens human communities especially those who are living in mountainous areas is the occurrence of landslides. Therefore, determination of the areas with potential for landslide events is very important for avoiding establishment of residential areas or industrial facilities. The aim of this study is to provide a landslide potential map in Sheshpeer sub-catchment, Iran, using an integration of remote sensing (RS) techniques and geographical information systems (GIS). Compared with the traditional approaches, these techniques are very fast, inexpensive and trustworthy in landslide mapping. For this purpose, we collected and produced seven data layers using …
Prediction Of Nonlinear Vertical Settlement Of A Pile Group Consisting Of New And Existing Displacement Piles In Clay Strata,
2019
Missouri University of Science and Technology
Prediction Of Nonlinear Vertical Settlement Of A Pile Group Consisting Of New And Existing Displacement Piles In Clay Strata, Lin Li, Weibing Gong
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
Reusing existing displacement piles is economical, timesaving, and environment friendly. This paper presents an analytical approach for predicting the load carrying behavior of pile groups consisting of new and existing displacement piles. The evolutions of the undrained shear strength and shear modulus of clay adjacent to the piles from installation through consolidation to long-term ageing are investigated to determine the load carrying behavior of displacement piles. The nonlinear load-settlement behavior of an individual pile is modelled by load-transfer method, where the exponential function-based load-transfer models integrating the two developed soil parameters are employed to represent the nonlinear behavior at the …
Gis-Based Approach For Sinkhole Occurrence Risk Mitigation In Urban Areas For Historic Wieliczka Salt Mine,
2019
AGH University of Science and Technology, Cracow, Poland
Gis-Based Approach For Sinkhole Occurrence Risk Mitigation In Urban Areas For Historic Wieliczka Salt Mine, Agnieszka Malinowska, Ryszard Hejmanowski
Gorniy vestnik Uzbekistana
The article presents the results of the definition of a new methodology for assessing the risk of flooding a shallow slotted mine, which was carried out on the square above the Wieliczka Salt Mine, which is a world heritage. Vertical stresses are estimated on the basis of the theoretical state of rock mass deformation in the area of test chambers. In addition, the risk for chambers indicated in the zone was calculated based on the theory of arctic pressure. The final stage of the study was spatial analysis, which led to the identification of chambers, potentially subject to the influence …
A New Discrete Wavelength Backscattered Ultraviolet Algorithm For Consistent Volcanic So2 Retrievals From Multiple Satellite Missions, Bradford L. Fisher, Nickolay A. Krotkov, Pawan K. Bhartia, Can Li, Simon Carn, Eric Hughes, Peter J. T. Leonard
Michigan Tech Publications, Part 1
This paper describes a new discrete wavelength algorithm developed for retrieving volcanic sulfur dioxide (SO2) vertical column density (VCD) from UV observing satellites. The Multi-Satellite SO2 algorithm (MS_SO2) simultaneously retrieves column densities of sulfur dioxide, ozone, and Lambertian effective reflectivity (LER) and its spectral dependence. It is used operationally to process measurements from the heritage Total Ozone Mapping Spectrometer (TOMS) onboard NASA's Nimbus-7 satellite (N7/TOMS: 1978–1993) and from the current Earth Polychromatic Imaging Camera (EPIC) onboard Deep Space Climate Observatory (DSCOVR: 2015–ongoing) from the Earth–Sun Lagrange (L1) orbit. Results from MS_SO2 algorithm for several volcanic cases were …
Volcano Monitoring From Space Using High-Cadence Planet Cubesat Images Applied To Fuego Volcano, Guatemala,
2019
Michigan Technological University
Volcano Monitoring From Space Using High-Cadence Planet Cubesat Images Applied To Fuego Volcano, Guatemala, Anna Aldeghi, Simon Carn, Rudiger Escobar-Wolf, Gianluca Groppelli
Michigan Tech Publications, Part 1
Fuego volcano (Guatemala) is one of the most active and hazardous volcanoes in the world. Its persistent activity generates lava flows, pyroclastic density currents (PDCs), and lahars that threaten the surrounding areas and produce frequent morphological change. Fuego’s eruption deposits are often rapidly eroded or remobilized by heavy rains and its constant activity and inaccessible terrain makes ground-based assessment of recent eruptive deposits very challenging. Earth-orbiting satellites can provide unique observations of volcanoes during eruptive activity, when ground-based techniques may be too hazardous, and also during inter-eruptive phases, but have typically been hindered by relatively low spatial and temporal resolution. …
Analysis Of An Updated Paleointensity Database (Qpi‐Pint) For 65–200 Ma: Implications For The Long‐Term History Of Dipole Moment Through The Mesozoic,
2019
University of Oslo
Analysis Of An Updated Paleointensity Database (Qpi‐Pint) For 65–200 Ma: Implications For The Long‐Term History Of Dipole Moment Through The Mesozoic, E. V. Kulakov, C. J. Sprain, P. V. Doubrovine, A. V. Smirnov, G. A. Paterson, L. Hawkins, L. Fairchild, E. J. Piispa, A. J. Biggin
Michigan Tech Publications, Part 1
The global paleointensity database for 65–200 Ma was analyzed using a modified suite of paleointensity quality criteria (QPI) such that the likely reliability of measurements is assessed objectively and as consistently as possible across the diverse data set. This interval was chosen because of dramatic extremes of geomagnetic polarity reversal frequency ranging from greater than 10 reversals per million years in the Jurassic hyperactivity period (155–171 Ma) to effectively zero during the Cretaceous Normal Superchron (CNS; 84–126 Ma). Various attempts to establish a relationship between the strength of Earth's magnetic field and the reversal frequency have been made …
Karst Sinkhole Detecting And Mapping Using Airborne Lidar,
2019
University of New Mexico
Karst Sinkhole Detecting And Mapping Using Airborne Lidar, Su Zhang, Shirley Baros, Susan Bogus
Publications
The focus of this study is to detect sinkhole hazards using airborne light detection and ranging (LiDAR) data. The premise is sinkholes, particularly those close to transportation infrastructure assets, could cause substantial damages to infrastructure assets, and therefore, being able to accurately and rapidly detect them is essential. However, it is expensive, time-consuming, labor-intensive, and unsafe to survey sinkholes using conventional ground observation methods. This research project was focused on developing accurate and rapid airborne LiDAR-based sinkhole detection and mapping methods, and transfer the technologies to transportation engineers for implementation and workforce development. The project team also identified best practices …
Thermal Conduction Simulation Based On Reconstruction Digital Rocks With Respect To Fractures,
2019
University of Petroleum Engineering
Thermal Conduction Simulation Based On Reconstruction Digital Rocks With Respect To Fractures, Haiyuan Yang, Li Zhang, Ronghe Liu, Xianli Wen, Yongfei Yang, Roohollah Askari, Et. Al.
Michigan Tech Publications, Part 1
Effective thermal conductivity (ETC), as a necessary parameter in the thermal properties of rock, is affected by the pore structure and the thermal conduction conditions. To evaluate the effect of fractures and saturated fluids on sandstone’s thermal conductivity, we simulated thermal conduction along three orthogonal (X, Y, and Z) directions under air- and water-saturated conditions on reconstructed digital rocks with different fractures. The results show that the temperature distribution is separated by the fracture. The significant difference between the thermal conductivities of solid and fluid is the primary factor influencing the temperature distribution, and the thermal conduction mainly depends on …
Evaluating Volumetric Strain As A Predictor Of Yield And Peak Strength For The Multistage Triaxial Test: A Case Study With Utah Coal Specimens,
2019
Montana Tech
Evaluating Volumetric Strain As A Predictor Of Yield And Peak Strength For The Multistage Triaxial Test: A Case Study With Utah Coal Specimens, Emmanuel Orilogi
Graduate Theses & Non-Theses
Failure envelopes used to characterize the shear strength of geological materials are generally obtained through conventional triaxial testing of multiple specimens and most of the specimens are heterogonous and expensive to obtain. Therefore, the multistage triaxial test was introduced to make use of a single specimen for material strength characterization, compared to the conventional triaxial test that requires at least three specimens. In the multistage triaxial test, the challenge to obtaining meaningful data is identifying when to terminate each loading stage. The goal is to be as close to the peak strength of the material but below the stress threshold …
Investigation Of The Toppling Of Rectangular Rigid Blocks Using A Shake Table And Distinct Element Models,
2019
Montana Tech
Investigation Of The Toppling Of Rectangular Rigid Blocks Using A Shake Table And Distinct Element Models, Sara Magallon
Graduate Theses & Non-Theses
Understanding the engineering principles of failure modes in rock formations from seismic activity continues to be a challenging problem for engineers and geologists. The complexity of the geology, geometry, discontinuities, and earthquake ground motions contribute to the difficulty in estimating the stability of rock slopes. In this study, one classic rock slope failure mode is examined: the toppling behavior of a single rigid rectangular block under dynamic loading. An investigation employing experimental and numerical modeling techniques was performed to observe the response of wooden blocks with different aspect (width/height) ratios subjected to loading at the base and compared to established …
Mineralogy And Fluid Inclusion Study Of The Crystal Mountain Fluorite Mine, Ravalli County, Montana,
2019
Montana Tech
Mineralogy And Fluid Inclusion Study Of The Crystal Mountain Fluorite Mine, Ravalli County, Montana, Francis Grondin
Graduate Theses & Non-Theses
The Crystal Mountain Fluorite Mine, known for its vast amounts of massively grown fluorite and rare accessory minerals including fergusonite (YNbO4) and thortveitite (Sc2Si2O7), is located in the Sapphire Mountains 22 km east of the town of Darby, Montana. This site has been mined previously between the years of 1954 through 1973. The Taber collection of drill core, thin sections, mine maps and miscellaneous reports on Crystal Mountain was recently donated to the Montana Bureau of Mines and Geology for future studies. The purpose of the present study has been to use …
History And Prospects Of Gamma-Activation Analysis Of Muruntau Mine,
2019
Ministry of Higher and Secondary Specialized Education of the Republic of Uzbekistan
History And Prospects Of Gamma-Activation Analysis Of Muruntau Mine, Melnikov L.N., Mingboyev X.S., Yermakov K.S.
Gorniy vestnik Uzbekistana
he article describes the history of the development of a new type of analysis of geological samples for gamma-activated gold method. The Central Mining Administration of the Navoi Mining and Metallurgical Combine announces the creation of a gamma-activated analytical laboratory at the Muruntau deposit. The prospect of gamma-activated analysis of gold, silver and rare metals in Uzbekistan and around the world.
The Effect Of Testing Conditions On The Performance Of Lost Circulation Materials: Understandable Sealing Mechanism,
2019
Missouri University of Science and Technology
The Effect Of Testing Conditions On The Performance Of Lost Circulation Materials: Understandable Sealing Mechanism, Montri Jeennakorn, Mortadha Alsaba, Runar Nygaard, Arild Saasen, Olav Magnar Nes
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
Lost circulation materials (LCMs) are added to drilling fluids to mitigate lost circulation (LOC) problems. Designing the fluid requires a good understanding of sealing mechanisms and all the parameters affecting the sealing performance. Laboratory testing apparatus is the key concept for LCM evaluation ensuring successful treatment. The high-pressure test cell containing fracture discs is an effective tool among the broadly designed apparatus. A variety of formulations has been developed from the LCM physical properties. Recently, the testing conditions such as the slot wall angles, and the fracture disc thickness were found to have significant effects on the evaluation results. However, …
An In-Situ Study Of The Aqueous Speciation Of Uranium (Vi) Under Hydrothermal Conditions,
2019
Missouri State University
An In-Situ Study Of The Aqueous Speciation Of Uranium (Vi) Under Hydrothermal Conditions, Diwash Dhakal
Graduate Theses/Dissertations
Rigorous study of the speciation distribution of uranyl-chloride bearing solutions under hydrothermal conditions is important to understand the transport mechanism of uranium underground, which is of uttermost interest to parties studying the geological uranium deposits and those studying the possibilities of geological repositories for spent nuclear waste. I report an in-situ Raman spectroscopic study of the speciation distribution of aqueous uranyl-chloride complexes upto 500°C conducted using a HDAC as the high PT spectroscopic cell. The samples studied contained the species UO22+, UO2Cl+, UO2Cl20 and UO2Cl3- …
Emittance Spectroscopy And Broadband Thermal Remote Sensing Applied To Phosphorite And Its Utility In Geoexploration: A Study In The Parts Of Rajasthan, India,
2019
Indian Space Research Organization (ISRO) Balanagar
Emittance Spectroscopy And Broadband Thermal Remote Sensing Applied To Phosphorite And Its Utility In Geoexploration: A Study In The Parts Of Rajasthan, India, Arindam Guha, Yasushi Yamaguchi, Snehamoy Chatterjee, Komai Rani, Kumranchat Vinod Kumar
Michigan Tech Publications, Part 1
The contrast in the emissivity spectra of phosphorite and associated carbonate rock can be used as a guide to delineate phosphorite within dolomite. The thermal emissivity spectrum of phosphorite is characterized by a strong doublet emissivity feature with their absorption minima at 9 µm and 9.5 µm; whereas, host rock dolomite has relatively subdued emissivity minima at ~9 µm. Using the contrast in the emissivity spectra of phosphorite and dolomite, data obtained by the thermal bands of Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) sensor were processed to delineate phosphorite within dolomite. A decorrelation stretched ASTER radiance composite could …
