Results 31 to 40 of about 48,580 (193)

Catalytic Behaviour of Mesoporous Cobalt-Aluminum Oxides for CO Oxidation [PDF]

, 2014
Ordered mesoporous materials are promising catalyst supports due to their uniform pore size distribution, high specific surface area and pore volume, tunable pore sizes, and long-range ordering of the pore packing.
Bordoloi, Ankur, Großmann, Dennis, Grünert, Wolfgang, Kaluza, Stefan, Muhler, Martin, Noei, Heshmat, Sanchez, Miguel Dario, Wang, Yuemin   +7 more
core   +3 more sources

Construction of a Versatile Ultra-Low Temperature Scanning Tunneling Microscope

, 2007
We constructed a dilution-refrigerator (DR) based ultra-low temperature scanning tunneling microscope (ULT-STM) which works at temperatures down to 30 mK, in magnetic fields up to 6 T and in ultrahigh vacuum (UHV).
Fukuyama H., H. Kambara, Hiroshi Fukuyama, T. Matsui, Tinkham M., Wolf E. L., Y. Niimi   +6 more
core   +1 more source

Hydrogen-assisted stabilization of Ni nanowires in solution [PDF]

, 2005
We have studied conductance characteristics of mechanically fabricated Ni nanoconstrictions under controlling electrochemical potential and pH of the electrolyte.
Armyanov S., Kei Murakoshi, Manabu Kiguchi, Tatsuya Konishi   +3 more
core   +2 more sources

A compact high-flux cold atom beam source [PDF]

, 2011
We report on an efficient and compact high-flux Cs atom beam source based on a retro-reflected two-dimensional magneto-optical trap (2D MOT). We realize an effective pushing field component by tilting the 2D MOT collimators towards a separate three ...
Aveline, D. C., Kellogg, J. R., Kohel, J. M., Schlippert, D., Thompson, R. J., Yu, N.   +5 more
core   +3 more sources

Origin and Suppression of $1/f$ Magnetic Flux Noise [PDF]

, 2016
Magnetic flux noise is a dominant source of dephasing and energy relaxation in superconducting qubits. The noise power spectral density varies with frequency as $1/f^\alpha$ with $\alpha \sim 1$ and spans 13 orders of magnitude.
Beck, M. A., Freeland, J. W., Kumar, P., McDermott, R., Pappas, D. P., Sendelbach, S., Wang, Hui, Wang, Zhe, Wu, R. Q., Yu, C. C.   +9 more
core   +2 more sources

Parameter Identification Method for Transformer Winding Equivalent Networks Based on Frequency Response Analysis: A Comparative Study

Energies
Transformers are essential power transformation equipment in power systems. Winding deformation is one of the main forms of transformer winding faults, which may cause performance degradation or even overall damage to the equipment.
Ran Zhu, Fuqiang Ren, Zhaoyang Kang, Yonghao Zhang, Shujun Liu, Kaining Hou, Hongbin Wu, Jiawen Wang, Hongshun Liu, Qingquan Li   +9 more
doaj   +1 more source

Corona Loss Prediction of UHV AC Transmission Line Based on DBN Neural Network Optimized by PSO

Zhongguo dianli, 2022
Based on the correlation between corona loss of UHV AC transmission lines and weather conditions such as rainfall, specific humidity, temperature, relative humidity, pressure, etc., a corona loss prediction method for UHV AC transmission lines is ...
Shumin HUANG, Lingao JIANG, Zhichuan LI, Guangxu YANG, Fugen SONG   +4 more
doaj   +1 more source

Bottom-loading dilution refrigerator with ultra-high vacuum deposition capability

, 2001
A Kelvinox 400 dilution refrigerator with the ability to load samples onto the mixing chamber from the bottom of the cryostat has been combined with an ultrahigh-vacuum (UHV) deposition chamber equipped with molecular beam sources.
A. M. Goldman, L. M. Hernandez, Shal’nikov A. I., Tsymbalenko V. L., Zavaritskii N. V.   +4 more
core   +1 more source

Electromagnetic Transient Simulation Algorithm for Nonlinear Elements Based on Rosenbrock Numerical Integration Method

IEEE Access
Traditional nonlinear elements of the electromagnetic transient simulation program (EMTP) use the numerical integration method, often employing the trapezoidal integration method as an implicit algorithm. However, when the number of nonlinear elements is
Jing Ye, Jihao Xie, Yong Wang, Liang Zhang, Binshan Li, Jinwei Lv, Ke Li, Shengpeng Jin, Yang Xu, Wei Ma   +9 more
doaj   +1 more source

Further Research on Insulation Coordination of UHV Half-Wavelength Power Transmission Line

Zhongguo dianli, 2019
Ultra high voltage half wavelength transmission (UHV HWACT) is a kind of transmission mode with large capacity and long distance, which has the advantages that it is not necessary to install reactive compensation devices of the line and to build switch ...
Liuchun ZHANG
doaj   +1 more source