Results 21 to 30 of about 358,496 (277)

Progress of the Felsenkeller shallow-underground accelerator for nuclear astrophysics

, 2016
Low-background experiments with stable ion beams are an important tool for putting the model of stellar hydrogen, helium, and carbon burning on a solid experimental foundation. The pioneering work in this regard has been done by the LUNA collaboration at
Bemmerer, D., Cavanna, F., Cowan, T. E., Grieger, M., Hensel, T., Junghans, A. R., Ludwig, F., Müller, S. E., Reinicke, S., Rimarzig, B., Schulz, S., Schwengner, R., Stöckel, K., Szücs, T., Takács, M. P., Wagner, A., Wagner, L., Zuber, K.   +17 more
core   +1 more source

Synchrotron Radiation for Quantum Technology

Advanced Functional Materials, EarlyView.
Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader, Sakura Pascarelli, Klaus Attenkofer, Anna A. Makarova, Karsten Holldack, Kai Rossnagel, Kristiaan Temst, George Kourousias, Stefano Carretta, Caterina Biscari, Helmut Dosch   +10 more
wiley   +1 more source

Performance evaluation and selection of the core drill bits for lunar rock

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
The objective of this study is to systematically examine the drilling efficiency and performance of various core drill bits in lunar rock formation using the discrete element method (DEM) and drilling experiments conducted in a lunar vacuum environment ...
Xuan Wang, Yan Wu, Zheng Gao, Haichun Hao, Lang Zhou, Jiahua Li, Mingzhong Gao   +6 more
doaj   +1 more source

Experimental Study on Thermal Damage and Energy Evolution of Sandstone after High Temperature Treatment

Shock and Vibration, 2018
Thermal damage and energy evolution characteristics in process of impact failure of sandstone after high temperature treatment were studied by split Hopkinson pressure bar (SHPB) system.
Rong-rong Zhang, Lai-wang Jing, Qin-yong Ma   +2 more
doaj   +1 more source

Behavior of noncircular tunnels excavated in stratified rock masses – Case of underground coal mines

Journal of Rock Mechanics and Geotechnical Engineering, 2019
The amount of tunnels excavated along stratified/sedimentary rock masses in Quangninh coal mine area, Vietnam, is gradually increasing. Rock mass in Quangninh is characterized by beddings between rock layers.
Ngoc Anh Do, Daniel Dias, Van Diep Dinh, Tien Tung Tran, Van Canh Dao, Viet Doan Dao, Phuc Nhan Nguyen   +6 more
doaj   +1 more source

Development of traffic and transport tunnels in Czech Republic in past decades [PDF]

, 2010
The paper presents a review of the history, current constructions and the most important plans in constructing railway and road tunnels in the Czech Republic. Individual tunnels are briefly, technically described; other significant characteristics of the
Barták, Jiří
core   +1 more source

Roll‐to‐Roll Mechanical Exfoliation for Large‐Area van der Waals Films with Preserved Crystallographic Alignment

Advanced Functional Materials, EarlyView.
A roll‐to‐roll exfoliation method is demonstrated that preserves the crystallographic alignment of anisotropic 2D materials over large areas, enabling scalable fabrication of directional electronic and optoelectronic devices. Abstract Anisotropic 2D materials such as black phosphorus (BP), GeS or CrSBr, exhibit direction‐dependent optical and ...
Esteban Zamora‐Amo, Francisco Fernandez‐Canizares, Yigit Sozen, Thomas Pucher, Pedro L Alcázar Ruano, Carmen Munuera, Ryo Ishikawa, Naoya Shibata, María Varela, Der‐Yuh Lin, Bing Wu, Jorge Quereda, Zdenek Sofer, Gabriel Sánchez‐Santolino, Andres Castellanos‐Gomez   +14 more
wiley   +1 more source

The mechanistical principles and engineering application of roof- cutting for roadway protection in advance of the working face

Scientific Reports
In coal mining operations, it is often challenging to control the deformation of the roadway in front of the working face. The excessive stress from the surrounding rock of the working face and the difficulties in caving the goaf roof have led to a ...
Zhaotai Li, Yuejin Zhou, Xiaoding Xu, Yuhang Xiao, Yunong Xu   +4 more
doaj   +1 more source

Mining in Alaska - environmental impact and pollution control [PDF]

, 1975
Environmental factors affecting mining are difficult to establish in Alaska due to the absence of large scale hard rock mining activities at the present time.
Johansen, N. I.
core  

Arguments for a "U.S. Kamioka": SNOLab and its Implications for North American Underground Science Planning [PDF]

, 2006
We argue for a cost-effective, long-term North American underground science strategy based on partnership with Canada and initial construction of a modest U.S. Stage I laboratory designed to complement SNOLab.
Aalseth, Akerib, Arnaboldi, Bemmerer, Bonvicini, Carson, Chen, Danilov, Erikson, Gaisser, Gaisser, Galbiati, Huber, J.F. Wilkerson, K.A. Philpott, Lanou, Laubenstein, McKinsey, Nakamura, Philip Long, Robert Holtz, Smith, W.C. Haxton   +22 more
core   +1 more source