Results 141 to 150 of about 69,267 (280)

The AMANDA Neutrino Telescope

open access: yes, 1998
With an effective telescope area of order $10^4$ m$^2$ for TeV neutrinos, a threshold near $\sim$50 GeV and a pointing accuracy of 2.5 degrees per muon track, the AMANDA detector represents the first of a new generation of high energy neutrino telescopes,
A. Biron   +87 more
core   +1 more source

Demonstration of a High‐Resolution Passive Profiler for Characterizing the Distribution of PFAS in Groundwater: A Comparison of Methods in the Field

open access: yesGroundwater Monitoring &Remediation, EarlyView.
Abstract Characterizing the concentration and mass flux spatial distributions at sites with complex hydrogeologic conditions is critical to evaluate the fate and transport of contaminants, as well as to design effective remediation programs. PFAS (per‐ and polyfluoroalkyl substances)‐contaminated sites are even more complex due to the large number of ...
Morgan Eldridge   +8 more
wiley   +1 more source

Effect of Bit Type on Reactive Torque and Consequent Tool-face-control Anomalies

open access: yesShiyou jixie, 2017
In sliding drilling with bend house mud motor, given the same WOB, the reactive torque is greater and the directional drilling is more difficult if the drill bit is more aggressive.
Xu Lihui
doaj  

Pre‐Task Explicit Instruction, Input Modality, and Working Memory in L2 Oral Self‐Repair

open access: yesInternational Journal of Applied Linguistics, EarlyView.
ABSTRACT Despite the central role of tasks in language education and ensuing research documenting how task‐related variables might affect language performance and learning, it remains unclear whether pre‐task explicit instruction, input modality, and working memory (WM) influence how learners monitor and repair grammatical structures in real‐time ...
Reza Yadollahpour   +2 more
wiley   +1 more source

The Effect of Tensile Stress on Longitudinal Wave Characteristics of Drill String for Gas Drilling

open access: yesShiyou jixie, 2020
To analyze the influence of tensile stress of drill string on the propagation characteristics of longitudinal waves during gas drilling, and to improve the quality and distance of acoustic signal transmission, a stress-longitudinal wave velocity analysis
Wang Qing   +6 more
doaj  

Енергозатрати у процесі буріння свердловин долотами різних конструкцій [PDF]

open access: yes, 2009
Проведено теоретичні дослідження пропускної здатності різьбових з’єднань бурильних замків та втрат гідравлічної енергії бурового насоса під час промивання свердловини.
Процюк, В. Р.   +2 more
core  

Polymict melt‐bearing breccia dikes in the Morokweng impact structure formed by slip‐induced mechanical mixing of pseudotachylite and cataclasite along large‐displacement impact faults

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract A core drilled through shocked and faulted Archean granitoid gneisses and dolerites in the eroded peak ring of the 70–80 km diameter Morokweng impact structure intersects multiple centimeter‐ to meter‐wide clastic‐matrix breccias containing a polymict clast population of lithic and mineral clasts and altered, millimeter‐ to centimeter ‐size ...
Roger L. Gibson   +3 more
wiley   +1 more source

Wear resistance of some elements of the drill string during drilling [PDF]

open access: yes, 2013
The article is concerned with questions of wearing capacity of some elements of the drill string, including the abrasive drilling of hard-alloy insert rolling cutter drilling bits.
Gogol, V. I.   +2 more
core  

Bret/BRAT

open access: yes
Critical Quarterly, EarlyView.
Nicholas Smart
wiley   +1 more source

Living in the Mycelial World

open access: yesTopics in Cognitive Science, EarlyView.
Abstract This manuscript documents a systematic ethnomycological analysis of ethnographic archives. Focusing on texts describing human–fungi interactions, I conduct a global, cross‐cultural review of mushroom use, covering 193 societies worldwide. The study reveals diverse mushroom‐related cultural practices, emphasizing the significance of fungi ...
Roope O. Kaaronen
wiley   +1 more source

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