Results 121 to 130 of about 522 (199)

Research on Optimal Width of Coal Pillars in Both Sides of Abandoned Mining Areas and Tunnel Control Technology

Energy Science &Engineering, Volume 14, Issue 8, Page 3625-3637, August 2026.
This study primarily investigates the optimal width for coal pillar retention in both sides of the worked‐out face section. Taking the 42201 haulage roadway of the 42201 working face at Shengxin Coal Mine as the primary research target, it analyses the optimum width for coal pillar retention through theoretical calculations, numerical simulations, and ...
Shuaifeng Yin, Kanglei Han, En Wang, Yitao Yan, Xubo Zhao   +4 more
wiley   +1 more source

A Comparative dose and image quality assessment of a portable, multi‐modality extremity imaging system for austere environments

Medical Physics, Volume 53, Issue 8, August 2026.
Abstract Background Rapid technological innovation in diagnostic imaging requires timely, evidence‐based safety and quality assessment to ensure optimal patient care. This study evaluates a novel multi‐modality extremity imaging system (OXOS MC2) designed for deployment in remote and austere environments.
Xiangyu Yang, Edward J. Stafford, Hadley A. DeBrosse, Yi Wei, Adam Smith, David E. Hintenlang, Nathaniel Bates   +6 more
wiley   +1 more source

A Hybrid Compliant–Tendon Laparoscopic Instrument for Distal Articulation and Grasping: Design and Experimental Validation

The International Journal of Medical Robotics and Computer Assisted Surgery, Volume 22, Issue 4, August 2026.
ABSTRACT Background Conventional laparoscopic instruments provide limited dexterity in confined anatomical environments, whereas existing articulated designs rely on complex rigid joints or motorised actuation, increasing mechanical complexity and limiting miniaturisation.
Prabhat Kumar, Bhallamudi Ravi
wiley   +1 more source

Optoelectronics of Single Mixed Dislocations in Van Der Waals Core‐Shell Nanowires

Small, Volume 22, Issue 44, 7 August 2026.
Ge1‐xSnxS van der Waals core‐shell nanowires can host single helical dislocations whose character is tunable from a pure screw to a majority edge dislocation via the core‐shell lattice mismatch. Cathodoluminescence shows profound effects once an edge component is introduced, notably a lowering of the spontaneous emission quantum efficiency due to the ...
Eli Sutter, Peter Sutter
wiley   +1 more source

Imaging Near‐Surface Bedrock Fracturing and Fluid Pathways Using Seismic Attenuation and Velocity From Viscoacoustic Full‐Waveform Inversion of Refraction Data

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 8, August 2026.
Abstract Seismic attenuation provides sensitivity to fracture density, fluid saturation, and pore geometry that complements velocity, enabling quantitative imaging of fracture architecture and associated fluid‐pathways in near‐surface bedrock. Yet high‐resolution attenuation models remain rare in refraction studies due to amplitude‐fidelity and ...
Donggeon Kim, Guangchi Xing, Tieyuan Zhu
wiley   +1 more source

Localization and Classification of Gravity Wave Events From VIIRS Day/Night Band Satellite Imagery Using Machine Learning Techniques

Earth and Space Science, Volume 13, Issue 8, August 2026.
Abstract Gravity waves in the upper mesosphere produce diverse spatial patterns in nighttime airglow, but their global morphology has been difficult to characterize because manual identification is impractical for the massive satellite image archive. We developed a machine learning framework to detect and classify gravity wave events in imagery from ...
Yuta Hozumi, Jia Yue, Seraj Al Mahmud Mostafa, Chenxi Wang, Jianwu Wang, Sanjay Purushotham, Steven D. Miller   +6 more
wiley   +1 more source

Reconstructing Europa's Atmosphere From H2+ ${\mathbf{H}}_{\mathbf{2}}^{+}$ Pickup Ions Detected During the Juno PJ45 Flyby

Journal of Geophysical Research: Planets, Volume 131, Issue 8, August 2026.
Abstract We use a suite of single‐species (H2 ${\mathrm{H}}_{2}$) and multispecies (H2+O2+H+O ${\mathrm{H}}_{2}+{\mathrm{O}}_{2}+\mathrm{H}+\mathrm{O}$) Direct Simulation Monte Carlo models of Europa's atmosphere to interpret the H2+ ${\mathrm{H}}_{2}^{+}$ pickup ions detected by Juno at distances beyond 2 $2$ Europa radii RE $\left({R}_{E}\right ...
Shane R. Carberry Mogan, Andrew R. Poppe, Lucas Liuzzo, Jamey R. Szalay, Sean P. Ellis, Robert E. Johnson, Lorenz Roth   +6 more
wiley   +1 more source

Study on Water-Jet-Guided Laser-Ultrasonic Grinding Hybrid Processing Technology for SiC_f/SiC Composite Materials. [PDF]

Materials (Basel)
Yu G, Zhang D, Pei X, Yang F.
europepmc   +1 more source

Experimental Investigation on the Rock-Breaking Efficiency of High-Pressure Jet Drill Rod Perforation in Sandstone Roof. [PDF]

ACS Omega
Li H, Yan P, Cheng Q, Chen J, Chen S, Dong T, Li B, Huang B.   +7 more
europepmc   +1 more source

Analysis of nozzle for the external casing perforation tool and experimental study on AWJ. [PDF]

Sci Rep
Ren X, Zhu W, Che Y, Yao J.
europepmc   +1 more source