Results 171 to 180 of about 116,075 (283)

Investigation of the North Face Corridor in the Great Pyramid of Giza using Electrical Resistivity Tomography. [PDF]

Sci Rep
Pugacheva P, Allam H, Fath-Elbab M, Sholqamy M, Taie K, Helal K, Popovych O, Elkarmoty M, Klitzsch N, Tayoubi M, Helal H, Grosse CU.   +11 more
europepmc   +1 more source

Surface hydration‐induced damage in tight oil‐bearing sandy conglomerate reservoirs

Deep Underground Science and Engineering, EarlyView.
A series of techniques such as X‐ray diffraction, scanning electron microscopy, energy‐dispersive spectroscopy, conductivity tests, and infrared thermal imaging were used. The key findings are the identification of a two‐stage surface hydration process and the elucidation of the effects of various minerals and elements on the hydration process ...
Anbang Zhao, Shuheng Du, Yuan Zhang, Jinghong Hu, Bo Zhou, Yun Wei   +5 more
wiley   +1 more source

Highly sensitive hierarchically structured Si-based UV sensor-photodetectors via optimized ZnO-Al₂O₃ nanocomposite architectures. [PDF]

Sci Rep
Abdelhamid Shahat M, Khamees AS, Ghitas A, Ezzat HA.   +3 more
europepmc   +1 more source

Numerical and experimental study on P‐wave propagation across a rock joint with different orientations

Deep Underground Science and Engineering, EarlyView.
Joint orientation significantly affects P‐wave velocity, with the highest velocity at zero‐degree angles, decreasing to 30° as the angle increases. The velocity increases slightly from 30 to 45 degrees but sharply decreases from 45 to 90 degrees. Abstract Determination of the required parameters in different science contexts using the ultrasonic wave ...
Yaghoob Zarei, Mojtaba D. fallahi, Ali Uromeihy, Mohammad R. Nikoodel, Mohammad Fathollahy   +4 more
wiley   +1 more source

Correction: Snow depth measurements from Arctic tundra and boreal forest collected during NASA SnowEx Alaska campaign. [PDF]

Sci Data
Stuefer SL, Hale K, May LD, Mason M, Vuyovich C, Marshall HP, Vas D, Elder K.   +7 more
europepmc   +1 more source

The impact of forced closure on proppant distribution of hydraulic fracturing in shale formations

Deep Underground Science and Engineering, EarlyView.
Research findings demonstrate that implementing forced closure within shale formations can remarkably mitigate proppant settlement, concurrently increasing the effective propped surface area from 29.74% to 38.68%. Abstract Forced closure is widely used in conventional oil and gas reservoirs to promote uniform proppant placement.
Tongxuan Gu, Hanyi Wang, Quan Gan, Shuang Zheng   +3 more
wiley   +1 more source

Aeromagnetic Compensation for UAVs Using Transformer Neural Networks. [PDF]

Sensors (Basel)
Dai W, Yang C, Zhou S.
europepmc   +1 more source

Gaborlet‐guided sparse filtering: A novel intelligent method for lithology identification by vibration signals while drilling

Deep Underground Science and Engineering, EarlyView.
The flowchart illustrates rock specimen testing, vibration signal acquisition, and feature extraction with Gaborlet and sparse filtering for classification. Abstract Traditional lithology identification methods mainly rely on core sampling and well‐logging data.
Jian Hao, Danqi Zhang, Zhenqi Song, Jinrui Wang, Qi Wang, Heqing Liu   +5 more
wiley   +1 more source

High-Pressure Synthesis and Structural Studies of La, Sm, Gd, and Dy Chlorides and Chloride Carbides. [PDF]

ACS Omega
Akbar FI, Aslandukova A, Aslandukov A, Yin Y, Bykova E, Bykov M, Laniel D, Milkin P, Fedotenko T, Wright J, Pakhomova A, Garbarino G, Mezouar M, Hanfland M, Dubrovinskaia N, Dubrovinsky L.   +15 more
europepmc   +1 more source

Instability mechanism and failure characteristics of underground cavern in block system under the action of seismic waves

Deep Underground Science and Engineering, EarlyView.
Seismic waves with tensile stress, high amplitude, and low frequency are most likely to trigger block instability and sliding. Blocks with a single sliding surface are more prone to movement than those with multiple constraints, and roof‐positioned blocks are especially vulnerable to slide.
Xiao Wang, Jinxiao Liu, Gaoshuo Zhang, Wenxin Li, Changdi He   +4 more
wiley   +1 more source