Results 11 to 20 of about 412,273 (267)

High Conversion Efficiency in Intrinsic High Power‐Density Mg2Sn‐GeTe Thermoelectric Generator [PDF]

Advanced Science
Thermoelectric generators (TEGs) offer a sustainable solution for thermal energy harvesting, where maximizing energy output necessitates achieving both high power density and high conversion efficiency. However, TEGs with intrinsically high power density
Xinzhi Wu, Longquan Wang, Airan Li, Gang Wu, Zhao Hu, Fei Frank Yun, Takao Mori   +6 more
doaj   +2 more sources

Analysis of transmission lines considering frequency-dependent parameters with linear and nonlinear loads [PDF]

ITM Web of Conferences, 2022
The primary objective of this paper is to model transmission lines with frequency-dependent parameters loaded with linear and nonlinear terminations using an approach based on Pade approximations.
Bouzidi Zahra, Rouijaa Hicham, El Idrissi Abdelaziz, Saih Mohamed   +3 more
doaj   +1 more source

Evaluation of Chitosan Derivatives Modified Mesoporous Silica Nanoparticles as Delivery Carrier

Molecules, 2021
Chitosan is a non-toxic biological material, but chitosan is insoluble in water, which hinders the development and utilization of chitosan. Chitosan derivatives N-2-Hydroxypropyl trimethyl ammonium chloride (N-2-HACC) and carboxymethyl chitosan (CMCS ...
Qi Li, Wenqian Wang, Gaowei Hu, Xianlan Cui, Dejun Sun, Zheng Jin, Kai Zhao   +6 more
doaj   +1 more source

Insight into the microstructural evolution of anthracite during carbonization-graphitization process from the perspective of materialization

International Journal of Mining Science and Technology, 2022
Materialization of coal is one of effective and clean pathways for its utilization. The microstructures of coal-based carbon materials have an important influence on their functional applications.
Huihui Zeng, Baolin Xing, Yijun Cao, Bing Xu, Lei Hou, Hui Guo, Song Cheng, Guangxu Huang, Chuanxiang Zhang, Qi Sun   +9 more
doaj   +1 more source

Construction of Zn-doped RuO2 nanowires for efficient and stable water oxidation in acidic media

Nature Communications, 2023
Oxygen evolution reaction catalysts capable of working efficiently in acidic media are highly demanded for the commercialization of proton exchange membrane water electrolysis.
Dafeng Zhang, Mengnan Li, Xue Yong, Haoqiang Song, Geoffrey I. N. Waterhouse, Yunfei Yi, Bingjie Xue, Dongliang Zhang, Baozhong Liu, Siyu Lu   +9 more
doaj   +1 more source

High efficiency purification of natural flake graphite by flotation combined with alkali-melting acid leaching: application in energy storage

Journal of Materials Research and Technology, 2022
The natural flake graphite (GO) with an initial fixed carbon content of 6.23% is purified using flotation combined with alkali-melting acid leaching to obtain the high purity graphite (PG3) for energy storage.
Saidan Zhao, Song Cheng, Baolin Xing, Mingjie Ma, Changliang Shi, Gan Cheng, Weibo Meng, Chuanxiang Zhang   +7 more
doaj   +1 more source

Efficient weighted expressions conversion [PDF]

RAIRO - Theoretical Informatics and Applications, 2007
A formal series with coefficients in a semiring \(K\) and variables in a finite alphabet \(A\) is a formal expression of the form \(\sum _{u\in A^*}k_uu\), where \(A^*\) is the free monoid on \(A\) and \(k_u\in K\). A semiring structure is defined on the set of formal series by defining \((\sum _{u\in A^*}k_uu)+(\sum _{u\in A^*}k'_uu)=\sum _{u\in A ...
Ouardi, Faissal, Ziadi, Djelloul
openaire   +3 more sources

SnCl4·5H2O: A Highly Efficient Catalyst for Hydration of Alkyne

Applied Sciences, 2015
SnCl4·5H2O is a highly efficient catalyst in the hydration of terminal alkynes that affords carbonyl compounds in high to good yields. Under the optimized reaction conditions, the moderate to excellent yields of corresponding ketones were obtained when ...
Dongxue Chen, Dantong Wang, Wei Wu, Linfei Xiao   +3 more
doaj   +1 more source

Chemical looping gasification of benzene as a biomass tar model compound using hematite modified by Ni as an oxygen carrier

Applications in Energy and Combustion Science, 2023
The effective removal of tar is a major challenge for biomass gasification. Schemes based on chemical looping gasification (CLG) offer a promising alternative for converting biomass into syngas with low tar content.
Huang Zhen, Yonghao Wang, Shiwen Fang, Yan Lin, Da Song, Kun Zhao, Yongqi Zhang, Hongqiang Xia, Zengli Zhao, Hongyu Huang   +9 more
doaj   +1 more source

Characteristic Study of Briquette Cyanobacteria as Fuel in Chemical Looping Combustion with Hematite as Oxygen Carrier

Applied Sciences, 2021
Due to the more and more serious cyanobacteria bloom problem, it is particularly urgent to find a technology suitable for large-scale disposal and the efficient recovery of abundant nitrogen and phosphorus resources in cyanobacteria.
Haifeng Zhang, Laihong Shen, Huijun Ge, Hongcun Bai   +3 more
doaj   +1 more source