Results 41 to 50 of about 4,037,959 (405)
Typical misinterpretations and scientific concepts in well-logging geologic studies
Natural Gas Industry B, 2023 The method and theoretical system of well logging geology have been widely used in the fields of basic geology, petroleum geology and engineering geology, but the different response sensitivity of different well logging series to geological information ...
Jin Lai +7 more
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Lead (Pb) Isotope Baselines for Studies of Ancient Human Migration and Trade in the Maya Region. [PDF]
PLoS ONE, 2016 We examined the potential use of lead (Pb) isotopes to source archaeological materials from the Maya region of Mesoamerica. The main objectives were to determine if: 1) geologic terrains throughout the Maya area exhibit distinct lead isotope ratios ...
Ashley E Sharpe +6 more
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Underground Astronauts: Understanding the Sporting Science of Speleology and its Implications for HCI [PDF]
International Journal of Human-Computer Studies 151 (2021) 1-12, 2021 In this paper, we present a qualitative study on speleology that aims to widen the current understanding of people's practices in Nature and identify a design space for technology that supports such practices. Speleology is a practice based on the discovery, study, and dissemination of natural cavities.
arxiv +1 more source
Frontiers in Earth Science, 2022 Ice-rich syncryogenic (termed “Ice Complex”) deposits are common in northern East Siberia and constitute the most important feature of the Quaternary geology of the region.
Vladimir V. Pitulko, Elena Y. Pavlova
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Adaptability Study and Effect Evaluation of Work Damage Unplugging Technology [PDF]
E3S Web of Conferences, 2021 In the process of oilfield development, the reservoir can be polluted by well cleaning, pump inspection and other operations. And that will lead to a long recovery period of oil well production after operation, and even the production is difficult to ...
Liu Shasha +9 more
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Microscopic dynamics and failure precursors of a gel under mechanical load [PDF]
PNAS 115, 3587 (2018), 2018 Material failure is ubiquitous, with implications from geology to everyday life and material science. It often involves sudden, unpredictable events, with little or no macroscopically detectable precursors. A deeper understanding of the microscopic mechanisms eventually leading to failure is clearly required, but experiments remain scarce.
arxiv +1 more source
Iraqi Geological Journal, 2023 The Na Bop-Pu Sap Pb-Zn ore bodies represent a typical vein-type lead-zinc deposit situated in the Cho Don area and are currently being extracted for their lead and zinc resources.
Khuong Hung +5 more
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A Journey from Improper Gaussian Signaling to Asymmetric Signaling [PDF]
, 2020 The deviation of continuous and discrete complex random variables from the traditional proper and symmetric assumption to a generalized improper and asymmetric characterization (accounting correlation between a random entity and its complex conjugate), respectively, introduces new design freedom and various potential merits.
arxiv +1 more source
To the problem of literal symbolization of hole drilling parameters
Известия высших учебных заведений: Геология и разведка, 2015 An approach to using of different literal symbolizations of parameters, functional ties and calculations in technical prjblems of geology exploration wells drilling is briefly shown.
L. D. Bazanov
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Cahn-Hilliard Theory for Unstable Granular Flows [PDF]
, 1999 A Cahn-Hilliard-type theory for hydrodynamic fluctuations is proposed that gives a quantitative description of the slowly evolving spatial correlations and structures in density and flow fields in the early stages of evolution of freely cooling granular fluids.
arxiv +1 more source