Results 121 to 130 of about 14,222 (264)

Isomer Composition Assessment of Synthetic Phosphatidylethanol by Collision‐Induced and Ozone‐Induced Dissociation Mass Spectrometry

Drug Testing and Analysis, EarlyView.
This study examines the isomeric composition of PEth reference materials and compares it with the natural variation in isomer distribution found in blood samples. ABSTRACT The direct blood‐alcohol biomarker phosphatidylethanol (PEth), especially its most abundant analogue 1‐palmitoyl‐2‐oleoyl‐sn‐phosphatidylethanol (PEth 16:0/18:1) has gained ...
Matthias Bantle, Jackson O. T. Long, Samuel C. Brydon, Reuben S. E. Young, Stephen J. Blanksby, Wolfgang Weinmann, Marc Luginbühl   +6 more
wiley   +1 more source

A perspective review of applications of the computed tomography (CT) scan imaging technique for microscopic reservoir rock characterization

Deep Underground Science and Engineering, EarlyView.
In this review, the application of micro‐CT and medical‐CT scanning in the oil and gas industry has been thoroughly discussed. Recent improvements in DRP and modern imaging techniques in the oil and gas industry have been modeled using both experimental and simulation work.
Achinta Bera, Bharadwaj Shukla, Dhruvikkumar Jogani   +2 more
wiley   +1 more source

Form and load transfer aspects of foundation systems: Case‐based implementation and adaptation for buildings

Deep Underground Science and Engineering, EarlyView.
Upon conceptualization of structural behavior, foundations in terms of their form are divided into linear (1D), planar (2D), and volumetric (3D). Regarding the load transfer mechanisms, linear foundation systems are considered vector‐acting, planar foundations are divided into section and surface‐acting, and volumetric ones are recognized as block ...
Abolfazl Eslami, Amirhossein Ebrahimipour, Meysam Imani, Reza Imam, Pinqiang Mo   +4 more
wiley   +1 more source

A review on rockburst prediction and prevention to shape an ontology‐based framework for better decision‐making for underground excavations

Deep Underground Science and Engineering, EarlyView.
A scientometric analysis of 2449 journal articles and a comprehensive review of 336 papers were conducted, discussing and identifying challenges and research gaps in rockburst prediction and prevention and proposing an ontology‐based framework for better decision‐making in underground excavations. Abstract With underground engineering projects becoming
Hongchuan Yan, Haijiang Li, Hongqiang Xie, Mingli Xiao, Jianliang Pei, Huaizhong Liu, Jiangda He   +6 more
wiley   +1 more source

Rock art from at least 67,800 years ago in Sulawesi. [PDF]

Nature
Oktaviana AA, Joannes-Boyau R, Hakim B, Burhan B, Sardi R, Adhityatama S, Jalandoni A, Hamrullah, Sumantri I, Tang M, Lebe R, Iswadi, Ilyas I, Abbas A, Jusdi A, Mahardian DE, Intan FS, Noerwidi S, Ririmasse MNR, Mahmud I, Duli A, Aksa LM, Nur M, Aziz N, Wigati S, Iksam, Faiz, Sabri M, Syahdar FA, Eriani, Hidayatullah NA, Suryatman, Darma L, Nurmin, Zulman L, Sindara SH, Saiful AM, Setiawan P, Brumm A, Aubert M.   +39 more
europepmc   +1 more source

Redefining shared symbolic networks during the Gravettian in Western Europe: New data from the rock art findings in Aitzbitarte caves (Northern Spain). [PDF]

PLoS One, 2020
Garate D, Rivero O, Rios-Garaizar J, Arriolabengoa M, Intxaurbe I, Salazar S.   +5 more
europepmc   +1 more source

Multiple injection techniques to stimulate complex fracture networks in coal reservoirs: A case study on gas disaster reduction of subsurface coal mine in southwest China

Deep Underground Science and Engineering, EarlyView.
An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang, Farui Shi, Jun Lu, Minghui Li, Cunbao Li, Heping Xie   +5 more
wiley   +1 more source

Monumental rock art illustrates that humans thrived in the Arabian Desert during the Pleistocene-Holocene transition. [PDF]

Nat Commun
Guagnin M, Shipton C, Al-Jibreen F, Losi G, Kalifi A, Armitage SJ, Stileman F, Stewart M, Al-Tamimi F, Breeze PS, van Buchem F, Drake N, Al-Shamry M, Al-Shammari A, Al-Wadani J, Alsharekh AM, Petraglia M.   +16 more
europepmc   +1 more source

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

Deep Underground Science and Engineering, EarlyView.
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu, Tao Li, Ruiqi Yuan, Yue Li, Bingni Wu, Bo Liu, Zhengding Deng, Galindo Rubén, Fausto Molina‐Gómez   +8 more
wiley   +1 more source

Un nouveau site à art rupestre dans le nord de Djibouti

Afrique Archéologie Arts, 2003
Benoît Poisblaud
doaj   +1 more source