Zobrazeno 1 - 10
of 77 552
pro vyhledávání: '"Umar AS"'
Autor:
Muhammad Suleman, Maryam Masoud, Muhammad Ishaq Khan, Ihsan Ullah, Abid Ullah, Rafi Ullah Jan, Shah Zeb, Umar Ashfaq, Ali Raza, Mohammad Waleed
Publikováno v:
The Egyptian Heart Journal, Vol 76, Iss 1, Pp 1-6 (2024)
Abstract Background Transcatheter aortic valve implantation (TAVI) is a growing treatment for aortic stenosis, but anatomical variations exist across populations. Asians tend to have smaller aortic annuli and higher bicuspid valve morphology compared
Externí odkaz:
https://doaj.org/article/6ffa7cdb054c44b68f6571ce742201a5
Publikováno v:
Geo-spatial Information Science, Pp 1-21 (2024)
Reservoir characterization is a vital task within the oil and gas industry, with the identification of lithofacies in subsurface formations being a fundamental aspect of this process. However, lithofacies identification in complex geological environm
Externí odkaz:
https://doaj.org/article/561d8c4f26b34c2fae8aa4597268f9f6
Publikováno v:
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, Vol 10, Iss 1, Pp 1-22 (2024)
Abstract The oil and gas industry relies on accurately predicting profitable clusters in subsurface formations for geophysical reservoir analysis. It is challenging to predict payable clusters in complicated geological settings like the Lower Indus B
Externí odkaz:
https://doaj.org/article/24237ae4abd340faae227621d9f33775
Publikováno v:
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, Vol 10, Iss 1, Pp 1-23 (2024)
Abstract Lithofacies identification plays a pivotal role in understanding reservoir heterogeneity and optimizing production in tight sandstone reservoirs. In this study, we propose a novel supervised workflow aimed at accurately predicting lithofacie
Externí odkaz:
https://doaj.org/article/5b6b6b340d554f1aa181fd2e244ead6f
Publikováno v:
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, Vol 10, Iss 1, Pp 1-26 (2024)
Abstract Lake Fuxian is one of the deepest tectonic plateau freshwater lakes in the southeastern Tibetan Plateau, China. However, questions such as how old the lake is, how deep the total sedimentary thickness sequences are, and what landscape of the
Externí odkaz:
https://doaj.org/article/3c7b23434d7e4f94b9fe4d46b2cf7e29
Autor:
Umar Ashraf, Wanzhong Shi, Hucai Zhang, Aqsa Anees, Ren Jiang, Muhammad Ali, Hassan Nasir Mangi, Xiaonan Zhang
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-18 (2024)
Abstract Geoscientists now identify coal layers using conventional well logs. Coal layer identification is the main technical difficulty in coalbed methane exploration and development. This research uses advanced quantile–quantile plot, self-organi
Externí odkaz:
https://doaj.org/article/967dea32533e48d0b375155792d555ba
Publikováno v:
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, Vol 9, Iss 1, Pp 1-24 (2023)
Abstract Geological facies evaluation is crucial for the exploration and development of hydrocarbon reservoirs. To achieve accurate predictions of litho-facies in wells, a multidisciplinary approach using well log analysis, machine learning, and stat
Externí odkaz:
https://doaj.org/article/3c7034c102334eb8b5e90ba6f9f4ca71
Publikováno v:
Heliyon, Vol 10, Iss 5, Pp e26777- (2024)
Fused Deposition Modeling (FDM) 3D printing creates components by layering extruded material. Printer parameters such as layer height and infill density can greatly impact the mechanical properties and quality of the printed parts. One critical facto
Externí odkaz:
https://doaj.org/article/836d6afc82aa4a9c804a6b64b34a151f
Autor:
Muhammad Usman, Muhammad Kashif Jamil, Waqar Muhammad Ashraf, Syed Saqib, Touqeer Ahmad, Yasser Fouad, Husnain Raza, Umar Ashfaq, Aamir Pervaiz
Publikováno v:
Energy Conversion and Management: X, Vol 20, Iss , Pp 100438- (2023)
With the escalating requirement for global sustainable energy solutions and the complexities linked with the complete transition to new technologies, internal combustion engines (ICEs) powered with biofuels like ethanol are gaining significance over
Externí odkaz:
https://doaj.org/article/58ecea12895d4c9b89584700e775cdd8
Autor:
Umar Ashraf, Aqsa Anees, Wanzhong Shi, Ren Wang, Muhammad Ali, Ren Jiang, Hung Vo Thanh, Ibrar Iqbal, Xiaonan Zhang, Hucai Zhang
Publikováno v:
Frontiers in Earth Science, Vol 10 (2022)
Externí odkaz:
https://doaj.org/article/a4f571592b46450198b11e88de861080