Results 71 to 80 of about 57,230 (201)

Recent Advances in Photocatalytic Urea Synthesis via C−N Coupling From C/N‐Containing Species: A Mini Review

open access: yesEcoEnergy, EarlyView.
This review systematically compares photocatalytic urea synthesis from various C (CO2, CO, CH3OH) and N (N2, NH3, NO3−) sources. It highlights C–N coupling mechanisms, key challenges, and future directions, offering a framework to guide rational catalyst design for sustainable, solar‐driven urea production.
Bo Ding   +5 more
wiley   +1 more source

Enzyme activity in terrestrial soil in relation to exploration of the Martian surface [PDF]

open access: yes
Urease activity in soil is persistent for long periods under low water, low temperature, and sterile regimes, and it was suggested that some form of enzyme-protective mechanism exists in soil.
Ardakani, M. S.   +3 more
core   +4 more sources

Marinomonas brasilensis sp. nov., isolated from the coral Mussismilia hispida, and reclassification of Marinomonas basaltis as a later heterotypic synonym of Marinomonas communis [PDF]

open access: yes, 2011
A Gram-negative, aerobic bacterium, designated strain R-40503(T), was isolated from mucus of the reef-builder coral Mussismilia hispida, located in the Sao Sebastiao Channel, Sao Paulo, Brazil.
Alves   +14 more
core   +2 more sources

Constructing Cu/Cu2O Heterogeneous Interface for Efficient Urea Electrosynthesis

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
In this study, a Cu/Cu2O heterogeneous interface with dual active sites is prepared for electrocatalytic CO2 and NO3−$$ {\mathrm{NO}}_3^{-} $$ coupling to urea. The catalyst shows high yield rates of 1156.63 mmol g−1 h−1 and FE of 29.67% at −1.0 V (vs RHE), which is significantly higher than Cu and Cu2O, highlighting the advantages of heterogeneous ...
Jiani Liu   +7 more
wiley   +1 more source

Application of Microbial Induced Calcite Precipitation (MICP) Technology in Geotechnical and Geo-Environmental Engineering: A Review

open access: yesArid Zone Journal of Engineering, Technology and Environment, 2021
One of the most recent areas of research in geotechnical and geo-environmental engineering is bio-mineralization, a natural process in living organisms, also known as Microbial Induced Calcite Precipitation.
I. S. Muhammad   +2 more
doaj  

Ammonia toxicity: from head to toe? [PDF]

open access: yes, 2016
Ammonia is diffused and transported across all plasma membranes. This entails that hyperammonemia leads to an increase in ammonia in all organs and tissues.
Dasarathy, Srinivasan   +6 more
core   +1 more source

Antibacterial Activity of Heteropolytungstates Against Proteus mirabilis

open access: yesEuropean Journal of Inorganic Chemistry, EarlyView.
We investigated the in vitro antibacterial activity of several heteropolytungstates against P. mirabilis, a drug‐resistant pathogen. All tested polyanions inhibited bacterial growth, with the Preyssler–Pope–Jeannin polyanion P5W30 exhibiting the highest activity (MIC = 0.78 mg/mL).
Nour El Ghouch   +5 more
wiley   +1 more source

The influence of fertilisation and crop rotation on soil microbial characteristics in the long-term field experiment

open access: yesPlant, Soil and Environment, 2009
Soils were sampled from the plots with four variants of fertilisation: Nil - without fertilisation, NPK - mineral fertilisation, FYM - farmyard manure, FYM + NPK - farmyard manure with mineral fertilisation, and two variants of crop rotation: field IV ...
O. Mikanová, M. Friedlová, T. Šimon
doaj   +1 more source

Utilization of immobilized urease for waste water treatment [PDF]

open access: yes
The feasibility of using immobilized urease for urea removal from waste water for space system applications is considered, specifically the elimination of the urea toxicity problem in a 30-day Orbiting Frog Otolith (OFO) flight experiment. Because urease
Husted, R. R.
core   +1 more source

Recent Progress on Enzyme Immobilization: Materials, Strategies, and Applications

open access: yesFood Bioengineering, EarlyView.
Enzyme immobilization technology has undergone substantial evolution driven by advances in materials science. This review systematically examines the recent advances in enzyme immobilization since 2024, with a focused analysis of five major categories of enzyme carriers including covalent organic framework, metal‐organic frameworks, polymers, carbon ...
Shuran Wang   +7 more
wiley   +1 more source

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