Results 131 to 140 of about 12,107 (247)

Investigating the Dynamic Behavior of Gabbro Specimens With Echelon Joints

open access: yesEnergy Science &Engineering, EarlyView.
Investigating the dynamic behavior of rock specimens with echelon joints based on SHPB tests. ABSTRACT To reveal the influence of dynamic load on the dynamic damage behavior of jointed rock masses, split Hopkinson pressure bar (SHPB) system was employed to test platy gabbro samples with joint angles of 15°, 30°, 45°, 65°, and 75° at an impact pressure ...
Lei Xue   +5 more
wiley   +1 more source

Failure Law of Soft and Hard Interlayer Overlying Rock in Gently Inclined, Super‐Thick Coal Seam and Research on the Development Height of a Water‐Conducting Fissure Zone

open access: yesEnergy Science &Engineering, EarlyView.
Based on the layered structural characteristics of the strata, this study summarizes four typical overburden structural types under the geological conditions of the 51408 working face. Through theoretical derivation and numerical simulation, the study reveals the stepwise failure characteristics of the overburden and analyzes the variations in ...
Kaijie Duan   +7 more
wiley   +1 more source

COMPARISON OF TOTAL (TLV) AND PARTIAL (PLV) LIQUID VENTILATION WITH PERFLUOROCARBON (PFC). 1611 [PDF]

open access: bronze, 1997
Adolf Valls‐i‐Soler   +5 more
openalex   +1 more source

High-Pressure Oxygen Test Evaluations [PDF]

open access: yes
The relevance of impact sensitivity testing to the development of the space shuttle main engine is discussed in the light of the special requirements for the engine.
Key, C. F., Schwinghamer, R. J.
core   +1 more source

Local intratracheal delivery of perfluorocarbon nanoparticles to lung cancer demonstrated with magnetic resonance multimodal imaging [PDF]

open access: yes, 2018
Chen, Junjie   +12 more
core   +2 more sources

An Environmental Impact Assessment of Perfluorocarbon Thermal Working Fluid Use On Board Crewed Spacecraft [PDF]

open access: yes
The design and operation of crewed spacecraft requires identifying and evaluating chemical compounds that may present reactivity and compatibility risks with the environmental control and life support (ECLS) system.
Arnold, William a., Perry, Jay L.
core   +1 more source

Disruption of Oligodendroglial Autophagy Leads to Myelin Morphological Deficits, Neuronal Apoptosis, and Cognitive Decline in Aged Mice

open access: yesGlia, EarlyView.
Ablation of autophagy in oligodendrocytes reveals increased PLP expression, myelin abnormalities, axon degeneration, and increased microglia activation in aged mice. The aged mice exhibit marked deficits in learning and memory tasks. ABSTRACT The aging central nervous system (CNS) is often marked by myelin degeneration, yet the underlying mechanisms ...
Niki Ktena   +8 more
wiley   +1 more source

Groundwater and stability in deep mining

open access: yes
Deep Underground Science and Engineering, EarlyView.
Wanghua Sui, Jianguo Wang
wiley   +1 more source

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