Results 281 to 290 of about 34,945,907 (346)

Estimation of evapotranspiration and single and dual crop coefficients of acai palm in the Eastern Amazon (Brazil) using the Bowen ratio system

Irrigation science, 2021
D. P. Sousa, Thiago Feliph Silva Fernandes, Lucas Belém Tavares, V. Farias, M. V. de Lima, Hildo Nunes, D. Costa, S. Ortega-Farías, P. Souza   +8 more
semanticscholar   +1 more source

Assessing Impact of Renewable Energy Integration on System Strength Using Site-Dependent Short Circuit Ratio

IEEE Transactions on Sustainable Energy, 2018
The increasing penetration of renewable energy sources (RESs) can challenge both power system planners and operators to maintain system reliability. Potential power system stability issues may arise when a large amount of RESs are connected to a weak ...
Di Wu, Gangan Li, M. Javadi, A. Malyscheff, M. Hong, John N. Jiang   +5 more
semanticscholar   +1 more source

Design Methodology for Symmetric CLLC Resonant DC Transformer Considering Voltage Conversion Ratio, System Stability, and Efficiency

IEEE transactions on power electronics, 2021
Fanfan Lin, Xin Zhang, Xinze Li
semanticscholar   +1 more source

Unveiling Solvent-Related Effect on Phase Transformations in CsBr–PbBr2 System: Coordination and Ratio of Precursors

Chemistry of Materials, 2018
All-inorganic cesium lead halide perovskite nanocrystals have emerged as attractive optoelectronic nanomaterials owing to their stabilities and highly efficient photoluminescence.
Mei Liu, Jiangtao Zhao, Zhenlin Luo, Zhihu Sun, Nan Pan, Huaiyi Ding, Xiaoping Wang   +6 more
semanticscholar   +1 more source

An Evaluation of Ratio Systems in Radioecological Studies

Health Physics, 1996
Replicate samples of soil, Juncus squarrosus and Calluna vulgaris were taken within a grid system on an organic peatland soil site in Ireland. A similar sampling survey was carried out on an organic rich forest soil site in Sweden, where Vaccinium myrtillus and Vaccinium vitis-idaea with corresponding soil samples were taken within a Picea abies stand.
E J, McGee, K J, Johanson, M J, Keatinge, H J, Synnott, P A, Colgan   +4 more
openaire   +2 more sources

Recent advances on thermal conductivity enhancement of phase change materials for energy storage system: A review

International Journal of Heat and Mass Transfer, 2018
Phase change materials (PCMs) possess very high heat storage capacity and are capable of maintaining a constant temperature during phase change, which makes them most prominent candidates for solar energy storage systems, heating, and cooling systems ...
Z. Qureshi, H. Ali, S. Khushnood
semanticscholar   +1 more source

Signal-to-noise ratio gain in neuronal systems

Physical Review E, 2001
We explore the possibility of a signal-to-noise ratio (SNR) gain both in a single neuron and a neuronal network. In the presence of a weak sinusoidal or pulse signal and Gaussian noise, the output SNR can exceed the input SNR over a wide range of noise intensities. The high output SNR and SNR gain can be acquired coincidentally at optimal noise levels.
F, Liu, Y, Yu, W, Wang
openaire   +2 more sources

EFFECTIVENESS RETENTION RATIO AND MULTISTATE SYSTEMS

2021
This paper analyzes approaches to dependability assessment of multistate systems in which partial failures can occur. It is shown that for many multistate systems it is advisable to use the effectiveness retention ratio as a dependability measure. The paper explains the meaning and advantages of this measure, and presents methods for its calculation ...
openaire   +1 more source

Lymph-nodal ratio in gastric cancer staging system.

Minerva chirurgica, 2011
Many studies have indicated that lymph node metastases and the depth of invasion of the primary tumor are the most reliable prognostic factors for patients with radically resected gastric cancer. Recently the ratio between metastatic and examined lymph nodes (n ratio) has been proposed as a new prognostic indicator.
DEGIULI, Maurizio, andrea BORASI, Fabio FORCHINO, Alessandra MARANO, Alessandro VENDRAME, Daniela CASELLA, Antonio PONTI, MUSSA, Baudolino, SANDRUCCI, Sergio   +8 more
openaire   +2 more sources

Wilson ratio in nearly ferromagnetic systems

Physical Review B, 1997
We study the behavior of the ratio between the uniform susceptibility and the thermal mass in a nearly ferromagnetic system using general results of quantum phase transitions. We consider cases where the ferromagnetic quantum critical point is approached along different paths. The relation with microscopic approaches is also investigated.
openaire   +1 more source