Results 161 to 170 of about 2,616,861 (245)

Optimization of Blasting‑Induced Roof Cutting Parameters in Key Stratum and Its Application in Gob‑Side Entry Retention Technology

Energy Science &Engineering, EarlyView.
This study addresses hard roof coal seam conditions by optimizing key stratum blasting‐cutting parameters through theoretical analysis, numerical simulation, and field tests. It proposes calculation methods for blast hole spacing and delay timing based on stress wave theory, controlling roadway deformation within 35 mm, thereby enhancing resource ...
Qiong Liu, Duanxiang Fu, Hongbin Li
wiley   +1 more source

Out-of-Plane Skew Effects on the Cyclic Performance of Column-Tree Steel Moment Connections. [PDF]

Materials (Basel)
Kim GW, Hong JK.
europepmc   +1 more source

Damage Characteristics and Stress Distribution Law of Overburden Rock in Multiple Mining of Close Coal Seams

Energy Science &Engineering, EarlyView.
This study on close coal seams shows that multi‐seam mining increases the height of the fractured zone from approximately 26 m (single upper‐seam mining) to about 49 m. When the lower seam is mined after the extraction of the upper seam, the heights of both the caved zone and the fractured zone increase by approximately two times.
Xiaoyu Wu, Lei Guo, Zedong Sun, Xiaowei Wu, Nan Zhang   +4 more
wiley   +1 more source

Structural response of RC beam-column joints reinforced with smart alloys and polyvinyl alcohol fibers. [PDF]

Sci Rep
Alqarni AS, Alshannag MJ, Higazey MM.
europepmc   +1 more source

Effect of volume for injection of the 15th to 16th thoracic interspinous space: An ex vivo study

Equine Veterinary Journal, EarlyView.
Abstract Background Impinging (overriding) spinous processes (ISPs) are commonly identified in horses with back pain. Diagnostic analgesia is widely used as the clinical reference standard for confirming association with clinical signs of back pain, but the specificity of dorsal spinous region diagnostic analgesia remains poorly understood.
Virginia Melly, Kara A. Brown, Julie Engiles, Holly L. Stewart, Darko Stefanovski, Kathryn W. Bills, Elizabeth Davidson   +6 more
wiley   +1 more source

Investigation of finite element simulation-based bond-slip effect for seismically vulnerable school reinforced concrete building frame. [PDF]

Sci Rep
Kang H, Lee K, Shin S, Woo J, Shin J.
europepmc   +1 more source

Synergistic Regulation of Soil Function and Wind Erosion Resistance by Sand Barriers, Vegetation, and Artificial Biological Crust in the Tengger Desert

Land Degradation &Development, EarlyView.
ABSTRACT Aeolian desertification poses a critical threat to ecosystem stability in arid regions worldwide. Although the combination of sand barriers and vegetation has been widely applied for sand fixation, its long‐term effectiveness is constrained by barrier degradation, slow natural development of biological soil crusts (BSCs), and the resulting ...
Bin Pan, Chen Meng
wiley   +1 more source

3D-Printed Geopolymer Composite Truss Beam: Experimental Verification of Manufacturing and Load-Bearing Capacity in Four-Point Bending. [PDF]

Materials (Basel)
Stoklasa VJ, Bureš V, Melter O, Čítek D, Zelený P, Łoś P, Łoś KE.   +6 more
europepmc   +1 more source

Phase Multiplexed Optical Computing: Reconfiguring a Multi‐Task Diffractive Optical Processor Using Illumination Phase Diversity

Laser &Photonics Reviews, EarlyView.
A monochrome multi‐task diffractive optical network architecture is designed to leverage illumination‐phase multiplexing to dynamically reconfigure its output function and accurately implement a large set of complex‐valued linear transformations between an input and an output aperture.
Xiao Wang, Aydogan Ozcan
wiley   +1 more source

Controllable patterning of magnetic bits with atomically sharp boundaries. [PDF]

Nat Commun
Wang Q, Jin L, He D, Yanagihara H, Kita E, Dunin-Borkowski RE, Chen FR, Zhong X.   +7 more
europepmc   +1 more source