Results 31 to 40 of about 1,001,066 (299)

Flexibility provision by virtual power line and soft open point in AC/DC distribution systems

International Journal of Electrical Power & Energy Systems
The increasing penetration of photovoltaic generation will significantly challenge the voltage quality, power flow, power losses in active distribution networks.
Xiaodong Yang, Wentao Jiang, Jing Ma, Da Xu, Chengjia Zhang, Yue Yang, Zhicheng Xu   +6 more
doaj   +1 more source

Energy conversion in isothermal nonlinear irreversible processes - struggling for higher efficiency

, 2017
First we discuss some early work of Ulrike Feudel on structure formation in nonlinear reactions including ions and the efficiency of the conversion of chemical into electrical energy.
Ebeling, W., Feistel, R.
core   +1 more source

Parametric Four-Photon Generation of Picosecond Light at High ConversionEfficiency [PDF]

, 1975
Parametric four-photon interaction in isotropic media was studied in the saturation range. Up to 10% of input laser energy could be converted into a broad frequency spectrum ranging from the ultraviolet to the infrared.
Kaiser, W., Penzkofer, Alfons, Seilmeier, A.   +2 more
core   +1 more source

In-sensor neural network for high energy efficiency analog-to-information conversion

Scientific Reports, 2022
This work presents an on-chip analog-to-information conversion technique that utilizes analog hyper-dimensional computing based on reservoir-computing paradigm to process electrocardiograph (ECG) signals locally in-sensor and reduce radio frequency ...
Sudarsan Sadasivuni, Sumukh Prashant Bhanushali, Imon Banerjee, Arindam Sanyal   +3 more
doaj   +1 more source

Vector Vortex Beams: Theory, Generation, and Detection of Laguerre–Gaussian and Bessel–Gaussian Types

Photonics
A vector vortex beam (VVB) combines the phase singularity of a vortex beam (VB) with the anisotropic polarization of a vector beam, enabling the transmission of complex optical information and offering broad application prospects in optical sensing, high-
Xin Yan, Xin Tao, Minghao Guo, Chunliang Zhou, Jingzhao Chen, Guanyu Shang, Peng Li   +6 more
doaj   +1 more source

An Agricultural Biogas Plant as a Thermodynamic System: A Study of Efficiency in the Transformation from Primary to Secondary Energy

Energies, 2023
Using a wide range of organic substrates in the methane fermentation process enables efficient biogas production. Nonetheless, in many cases, the efficiency of electricity generation in biogas plant cogeneration systems is much lower than expected, close
Krzysztof Pilarski, Agnieszka A. Pilarska, Alicja Kolasa-Więcek, Dariusz Suszanowicz   +3 more
doaj   +1 more source

Achieving 87% of Theoretical Output Charge Density by Optimizing Charge Behaviors in Polydimethylsiloxane/CaCu3Ti4O12-Based Triboelectric Nanogenerators

Research
Triboelectric charge behaviors, including the generation, storage, and dissipation, play a pivotal role in determining the output charge density of triboelectric nanogenerators (TENGs). While numerous factors influence these behaviors, prior research has
Jinyang Liu, Zhongkun Wang, Shuo Wang, Yuanzheng Zhang, Weikun Li, Song Zhao, Dongyang Li, Yonghui Wu, Hengyu Guo, Haiwu Zheng   +9 more
doaj   +1 more source

Quantum efficiency of photosynthetic energy conversion. [PDF]

Proceedings of the National Academy of Sciences, 1977
The quantum efficiency of photosynthetic energy conversion was investigated in isolated spinach chloroplasts by measurements of the quantum requirements of ATP formation by cyclic and noncyclic photophosphorylation catalyzed by ferredoxin. ATP formation had a requirement of about 2 quanta per 1 ATP at 715 nm (corresponding to a requirement of 1 quantum
R K, Chain, D I, Arnon
openaire   +2 more sources

Performance enhancement of nanogenerator achieved in branch-heterostructure piezoelectric ceramic fiber toward electrical transmission power line monitoring

Journal of Advanced Ceramics
A flexible composite-based piezoelectric nanogenerator (PENG) with low cost, stable properties, and sensitivity to mechanical deformation is highly suitable for constructing self-powered sensing layers for distributed electrical transmission power lines.
Haowei Lu, Zhenghua Hu, Xin Wang, Gaoru Chen, Xiaogan Zheng, Jintao Xia, Mingju Huang, Wenlong Yang, Junhui Liu, Benlin Hu   +9 more
doaj   +1 more source

Synergizing Photo-Thermal H2 and Photovoltaics into a Concentrated Sunlight Use

iScience, 2020
Summary: Solar hydrogen and electricity are promising high energy-density renewable sources. Although photochemistry or photovoltaics are attractive routes, special challenge arises in sunlight conversion efficiency.
Sanli Tang, Xueli Xing, Wei Yu, Jie Sun, Yimin Xuan, Lu Wang, Yangfan Xu, Hui Hong, Hongguang Jin   +8 more
doaj   +1 more source