Results 151 to 160 of about 697,882 (367)

Highly Selective Electroreduction of CO2 to CH4 on Cu–Pd Alloy Catalyst: the Role of Palladium‐Adsorbed Hydrogen Species and Blocking Effect

open access: yesAdvanced Science, EarlyView.
The blocking effect induced by the Pd atom would interrupt the C─C coupling reaction by increasing the intermolecular distance between adjacent *CO and *CHO intermediates adsorbed on the Cu atoms when introduced Pd into the Cu lattices and the *CO protonation effect of palladium‐adsorbed *H species boosts the CH4 formation on the Cu–Pd alloy catalyst ...
Jinyan Huang   +12 more
wiley   +1 more source

Multi-heterodyne differential absorption lidar based on dual-comb spectroscopy for simultaneous greenhouse gas and wind speed measurements [PDF]

open access: yesarXiv
In a recent study [1], we demonstrated a multi-heterodyne differential absorption lidar (DIAL) for greenhouse gas monitoring utilizing solid targets. The multi-frequency absorption measurement was achieved using electro-optic dual-comb spectroscopy (DCS) with a minimal number of comb teeth to maximize the optical power per tooth.
arxiv  

From SO2 to Greenhouse Gases: Trends and Events Shaping Future Emissions Trading Programs in the United States [PDF]

open access: yes
Cap-and-trade programs have become widely accepted for the control of conventional air pollution in the United States. However, there is still no political consensus to use these programs to address greenhouse gases. Meanwhile, in the wake of the success
Kruger, Joseph
core  

Battery‐Free, Stretchable, and Autonomous Smart Packaging

open access: yesAdvanced Science, EarlyView.
This article reports the development of a battery‐free, autonomous smart packaging system that integrates real‐time food monitoring through a gas sensor, a Near‐Field Communication (NFC) antenna, and a controlled release of active compounds. The system effectively extends food shelf‐life by up to 14 days, demonstrating its potential to preserve food ...
Ali Douaki   +11 more
wiley   +1 more source

An Empirical Analysis of Above-Ground Biomass and Carbon Sequestration Using UAV Photogrammetry and Machine Learning Techniques

open access: yesIEEE Access
This research aims to analyze above-ground biomass and carbon sequestration using unmanned aerial vehicle (UAV) photogrammetry and machine learning methods, focusing on a case study of the dry dipterocarp forest in the Ban Hin Lat and Hin Lat Phatthana ...
Thinnakon Angkahad   +6 more
doaj   +1 more source

Symmetrical Triboelectric In Situ Self‐Powered Sensing and Fault Diagnosis for Double‐Row Tapered Roller Bearings in Wind Turbines: An Integrated and Real‐Time Approach

open access: yesAdvanced Science, EarlyView.
A novel symmetrical single‐electrode triboelectric double‐row tapered roller bearing is developed for in situ condition monitoring in wind turbines. The system converts operational friction into electrical signals for simultaneous sensing at both bearing ends.
Song Wang   +5 more
wiley   +1 more source

Unprecedented Ultra‐High Expansion Ratio Foam for Innovative Architecture

open access: yesAdvanced Science, EarlyView.
PMMA/PVDF foams with ultra‐high expansion ratios are achieved through a microwave‐enhanced foaming process. The unique combination of matrix material properties and cell structure confers these foams with exceptional radiative cooling efficiency and thermal insulation performance, making them promising candidates for next‐generation passive radiative ...
Wenyu Zhong   +5 more
wiley   +1 more source

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