Results 31 to 40 of about 2,476,014 (304)

Dual-band substrate integrated waveguide textile antenna with integrated solar harvester [PDF]

open access: yes, 2014
A dual-band wearable textile antenna based on substrate integrated waveguide technology is presented for operation in the [2.4-2.4835]-GHz Industrial, Scientific and Medical band and the [2.5-2.69]-GHz 4G LTE band 7.
Declercq, Frederick   +2 more
core   +1 more source

Ubiquitous energy storage [PDF]

open access: yes, 2005
This paper presents a vision of a future power system with "ubiquitous energy storage", where storage would be utilized at all levels of the electricity system.
Ault, G. W.   +4 more
core   +1 more source

Effects of sodium carbonate on self-healing properties of cement–slag–limestone powder ternary cementitious material

open access: yesCase Studies in Construction Materials, 2022
Cement–slag–limestone ternary cementitious materials are cement-based materials with significant potential for applications, it exhibits extremely low carbon emissions and excellent workability. Now, to lower CO2 emissions of concrete industry the use of
Yi-Sheng Wang, Xiao-Yong Wang
doaj   +1 more source

Linear energy-preserving integrators for Poisson systems [PDF]

open access: yesBIT Numerical Mathematics, 2011
The authors introduce a new class of energy conserving integrators in order to solve initial value problems for non-canonical Hamiltonian systems. In contrast to similar integrators, these are invariant to linear transformations. They also conserve quadratic Casimir functions and they are of arbitrarily order of accuracy.
Cohen, David, Hairer, Ernst
openaire   +5 more sources

Selective Recovery of Copper from Industrial Sludge by Integrated Sulfuric Leaching and Electrodeposition

open access: yesMetals, 2020
The metal-containing sludge generated from the printed circuit boards (PCBs) manufacturing has been recycled as a secondary resource of copper (Cu) rather than being treated as a hazardous solid waste.
Ha Bich Trinh   +5 more
doaj   +1 more source

Development of Forecasting Model for Machine Learning-Based Landfill Leachate Generation Using Linear Interpolation

open access: yes대한환경공학회지, 2023
Purpose : The purpose of this study is to compare single models according to the missing value handling techniques for predicting leachate generation.
Kyung-Min Kim, Johng-Hwa Ahn
doaj   +1 more source

Evaluation of the early strength of limestone-slag-cement ternary composite mortar improved by aluminum sulfate

open access: yesJournal of Materials Research and Technology, 2023
Limestone-slag-Portland cement mixtures have a low carbon footprint but have low early compressive strength. This study proposes a method to improve the early strength of ternary mixture mortar using aluminum sulfate, evaluates its effectiveness, and ...
Yi-Sheng Wang   +2 more
doaj   +1 more source

Eddy covariance raw data processing for CO2 and energy fluxes calculation at ICOS ecosystem stations [PDF]

open access: yes, 2019
open18siThe eddy covariance is a powerful technique to estimate the surface-Atmosphere exchange of different scalars at the ecosystem scale. The EC method is central to the ecosystem component of the Integrated Carbon Observation System, a monitoring ...

core   +1 more source

Recycled glass powder for enhanced sustainability of limestone calcined clay cement (LC3) mixtures: mechanical properties, hydration, and microstructural analysis

open access: yesJournal of Materials Research and Technology, 2023
The large quantities of nondegradable waste glass led to landfill overflow, causing severe environmental harm. Measures need to be taken to reduce the environmental problems associated with waste glass.
Yi-Sheng Wang   +4 more
doaj   +1 more source

Energy-Preserving Integrators Applied to Nonholonomic Systems [PDF]

open access: yesJournal of Nonlinear Science, 2019
We introduce energy-preserving integrators for nonholonomic mechanical systems. We will see that the nonholonomic dynamics is completely determined by a triple $({\mathcal D}^*, Π, \mathcal{H})$, where ${\mathcal D}^*$ is the dual of the vector bundle determined by the nonholonomic constraints, $Π$ is an almost-Poisson bracket (the nonholonomic bracket)
Elena Celledoni   +3 more
openaire   +5 more sources

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