Results 21 to 30 of about 1,482,675 (252)

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

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 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

Heat absorption properties of ground material for solar chimney power plants [PDF]

, 2016
One of the major challenges to the widespread application of the solar chimney power plant is its low-power conversion efficiency because of the three technological processes involved.
Al-Azawiey, S. S., Hassan, S. B.
core   +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

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

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

Efficiency of Energy Conversion in Thermoelectric Nanojunctions

, 2009
Using first-principles approaches, this study investigated the efficiency of energy conversion in nanojunctions, described by the thermoelectric figure of merit $ZT$. We obtained the qualitative and quantitative descriptions for the dependence of $ZT$ on
Baheti K., Beebe J. M., Chen Y. C., Chen Y. C., Chen Y. C., Cuevas J. C., Di Ventra M., Dubi Y., Finch C. M., Galperin M., Kaun C. C., Ke S. H., Kobayashi N., Lang N. D., Lang N. D., Liu Y. S., Ludoph B., Ma C. L., Malen J. A., Markussen T., Patton K. R., Paulsson M., Pauly F., Reddy P., Smit R. H. M., Tao N. J., Thygesen K. S., Wang B., Wang W., Wold D. J., Yang Z., Zhao J., Zheng X.   +32 more
core   +1 more source

Upacicalcet: A Novel Intravenous Calcimimetic Agent for Patients Undergoing Hemodialysis With Secondary Hyperparathyroidism

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Secondary hyperparathyroidism (SHPT) is a common complication in patients receiving maintenance dialysis, driven by calcium and phosphate metabolism disturbances. Calcimimetics are central to the management of SHPT by enhancing calcium‐sensing receptor sensitivity and reducing parathyroid hormone secretion.
Fumihiko Koiwa, Daisuke Honda, Seigo Akari, Tadao Akizawa   +3 more
wiley   +1 more source

Quantitative stability analysis of STATCOM in voltage control mode and Enhanced control method based on voltage feedforward

International Journal of Electrical Power & Energy Systems
STATCOM is a crucial device for reactive power compensation and voltage regulation. However, under weak grid conditions, oscillations may arise during voltage control (VC) mode operation due to the AC Voltage Controller (AVC), potentially jeopardizing ...
Song Zhang, Yandong Chen, Qianyuan Li, Zhiwei Xie, Youze Fu, Wenhua Wu   +5 more
doaj   +1 more source