Results 81 to 90 of about 4,673,395 (335)

Chemical looping gasification characteristics and kinetic analysis of Chlorella and its organic components

open access: yesCarbon Resources Conversion, 2022
Chemical looping gasification (CLG) characteristics and kinetic analysis of Chlorella (CHL), simulated Chlorella (V-CHL) and medium-chain triglycerides (MCT) were investigated using a thermogravimetric analyzer coupled with an online mass spectrometer ...
Song Wu   +6 more
doaj   +1 more source

Synthesis gas generation by chemical-looping reforming in a continuously operating laboratory reactor [PDF]

open access: yes, 2006
Chemical-looping reforming is a technology that can be used for partial oxidation and steam reforming of hydrocarbon fuels. This paper describes continuous chemical-looping reforming of natural gas in a laboratory reactor consisting of two interconnected
Lyngfelt, Anders   +2 more
core   +1 more source

Redox kinetics of CaMg0.1Ti0.125Mn0.775O2.9− for Chemical Looping Combustion (CLC) and Chemical Looping with Oxygen Uncoupling (CLOU) [PDF]

open access: yesChemical Engineering Journal, 2015
The objective of this study was to establish the kinetic of reactions involved in redox cycles of an oxygen carrier material based on a perovskite type structure with the formula CaMg0.1Ti0.125Mn0.775O2.9−δ. The oxygen transport capacity and reactivity of this material during reduction with gaseous fuels (CH4, H2 and CO) and the subsequent oxidation ...
Abad Secades, Alberto   +4 more
openaire   +2 more sources

Near 100% CO selectivity in nanoscaled iron-based oxygen carriers for chemical looping methane partial oxidation [PDF]

open access: yesNature Communications, 2019
Chemical looping methane partial oxidation provides an energy and cost effective route for methane utilization. However, there is considerable CO2 co-production in current chemical looping systems, rendering a decreased productivity in value-added fuels ...
Yan Liu   +6 more
semanticscholar   +1 more source

The role of histone modifications in transcription regulation upon DNA damage

open access: yesFEBS Letters, EarlyView.
This review discusses the critical role of histone modifications in regulating gene expression during the DNA damage response (DDR). By modulating chromatin structure and recruiting repair factors, these post‐translational modifications fine‐tune transcriptional programmes to maintain genomic stability.
Angelina Job Kolady, Siyao Wang
wiley   +1 more source

In situ studies of materials for high temperature CO2 capture and storage. [PDF]

open access: yes, 2016
Carbon capture and storage (CCS) offers a possible solution to curb the CO2 emissions from stationary sources in the coming decades, considering the delays in shifting energy generation to carbon neutral sources such as wind, solar and biomass.
Allan, PK   +14 more
core   +4 more sources

Chemical-looping combustion — a thermodynamic study

open access: yesProceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2008
The poor performance of internal combustion (IC) engines can be attributed to the departure from equilibrium in the combustion process. This departure is expressed numerically, as the difference between the working fluid's temperature and an ideal ‘combustion temperature’, calculated using a simple expression.
openaire   +3 more sources

Chemical Looping Combustion of Coal in China: Comprehensive Progress, Remaining Challenges, and Potential Opportunities

open access: yes, 2020
Chemical looping combustion (CLC) has emerged as an efficient and promising combustion technique for fossil fuels during the past few decades.
Haibo Zhao   +6 more
semanticscholar   +1 more source

Integration of circadian and hypoxia signaling via non‐canonical heterodimerization

open access: yesFEBS Letters, EarlyView.
CLOCK, BMAL1, and HIFs are basic helix‐loop‐helix and Per‐Arnt‐Sim domain (bHLH‐PAS) proteins, which function as transcription factors. bHLH‐PAS proteins are designated in two classes. Many class I proteins are regulated by environmental signals via their PAS domains, but such signals have not been identified for all.
Sicong Wang, Katja A. Lamia
wiley   +1 more source

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