Results 21 to 30 of about 545,698 (316)

A Watt-Level, High-Quality LG_0,±1 Vortex Beam made from a Nd:YVO₄ Laser Pumped by an Annular Beam

Photonics
In this work, we demonstrate a Watt-level, high-quality Laguerre–Gaussian (LG) LG0±1 vortex mode directly output from an end-pumped Nd:YVO4 laser by using an axicon-based annular pump beam.
Minghao Guo, Xin Tao, Yueqing Li, Shirui Zhang, Zhenkun Wu, Yuzong Gu, Peng Li   +6 more
doaj   +1 more source

Analysis and Experiment of Laser Energy Distribution of Laser Wireless Power Transmission Based on a Powersphere Receiver

Photonics, 2023
Laser wireless power transmission (WPT) is one of the most important technologies in the field of long-range power transfer. This technique uses a laser as a transmission medium instead of conventional physical or electrical connections to perform WPT ...
Tiefeng He, Guoliang Zheng, Qingyang Wu, Haixuan Huang, Lili Wan, Keyan Xu, Tianyu Shi, Zhijian Lv   +7 more
doaj   +1 more source

Influence of Reservoir Stimulation on Marine Gas Hydrate Conversion Efficiency in Different Accumulation Conditions [PDF]

, 2018
In this paper, we used a method of combining reservoir stimulation technique (RST) with depressurization to investigate the conversion efficiency of marine natural gas hydrate (NGH) reservoirs in the Shenhu area, on the northern slope of the South China ...
Chen Chen, Wei Guo, Xitong Li, Youhong Sun, Rui Jia, Dongbin Pan, Lin Yang, Yong Chen   +7 more
core   +1 more source

Value-addition of water hyacinth and para grass through pyrolysis and hydrothermal liquefaction

Carbon Resources Conversion, 2019
Hydrothermal liquefaction (HTL) and pyrolysis (Py) of Loktak lake biomass mixture of water hyacinth (WH) and para grass (PG) were carried out at 260–300 °C and 300–500 °C to compare the products yield and chemical characteristics of the products. In case
Dinabandhu Sahoo, Ayushi Awasthi, Vaibhav Dhyani, Bijoy Biswas, Jitendra Kumar, Yenumala Sudhakara Reddy, V.P. Adarsh, Anoop Puthiyamadam, Kiran Kumar Mallapureddy, Rajeev K. Sukumaran, Sabeela Beevi Ummalyma, Thallada Bhaskar   +11 more
doaj   +1 more source

Analysis of the Driving Altitude and Ambient Temperature Impact on the Conversion Efficiency of Oxidation Catalysts

Applied Sciences, 2021
Worldwide emission standards are extending their requirements to cover engine operation under extreme ambient conditions and fill the gap between the type-approval and real driving conditions.
José Ramón Serrano, Pedro Piqueras, Enrique José Sanchis, Bárbara Diesel   +3 more
doaj   +1 more source

Energy Conversion Efficiency of Pulsed Ultrasound [PDF]

, 2015
Energy characterization of a pulsed ultrasonic system was carried out using a modified calorimetric method. Sonochemical efficiency (SE) for the oxidation of Fe+2 and the formation of H2O2 was determined for selected on:off ratios (R) and different power
Al-Juboori, Raed A., Bowtell, Leslie, Yusaf, Talal   +2 more
core   +1 more source

An improved grid-forming control method with adaptive virtual impedance combining current limitation and transient stability improvement

International Journal of Electrical Power & Energy Systems
The virtual impedance (VI) control method is widely used to limit fault current for grid-forming converter (GFMC). However, in this article, it is found that the VI deteriorates the transient synchronization stability of the GFMC under grid faults.
Xiaoping Zhou, Lei Zhang, Hanting Peng, Lerong Hong, Qianming Xu, Zhen Zhang, Jiakun Shao, Jianchao Ma, Yizhen Hu   +8 more
doaj   +1 more source

Modeling of multi-junction solar cells for maximum power point tracking to improve the conversion efficiency

, 2017
This paper presents the basic principles of solar cells/ panels and explores its different models, such as single and double diode models. The main purpose of this research is to confirm that the principle of multi-junction solar cell (MJSC) operation to
Wang, Zhe, Ahfock, Tony, Andreas Helwig, Tony Ahfock, Helwig, Andreas, Zhe Wang, Narottam Das, Das, Narottam   +7 more
core   +1 more source

Multi-Source Information Fusion for Environmental Perception of Intelligent Vehicles Using Sage-Husa Adaptive Extended Kalman Filtering

Sensors
With the rapid advancement of intelligent driving technology, multi-source information fusion has become a vital topic in the field of environmental perception.
Yibo Meng, Huifang Kong, Tiankuo Liu
doaj   +1 more source

CO₂conversion by plasma: how to get efficient CO₂conversion and high energy efficiency

Physical Chemistry Chemical Physics, 2021
Plasma technology, combined with activation on surfaces, is a novel way to convert CO2using green electricity.
Yongxiang Yin, Tao Yang, Zhikai Li, Edwin Devid, Daniel Auerbach, Aart W. Kleyn   +5 more
openaire   +3 more sources