Results 21 to 30 of about 692,674 (303)

Role of ureolytic activity in Bacillus cereus nitrogen metabolism and acid survival [PDF]

open access: yes, 2008
The presence and activities of urease genes were investigated in 49 clinical, food, and environmental Bacillus cereus isolates. Ten strains were shown to have urease genes, with eight of these strains showing growth on urea as the sole nitrogen source ...
Abee, T., Mols, J.M.
core   +1 more source

Urea-induced unfolding curves of SpTrx WT and F26 mutants.

open access: yes, 2021
Fluorescence spectra were measured after incubating the proteins with different concentrations of urea (0–10 M) at 25°C for 30 min (excitation at 280 nm). Data presented are means ± S.D. of three experiments.
Thu-Thuy Nguyen (9325402)   +5 more
core   +1 more source

Urea-Appended Amino Acid To Vitalize Yeast Growth, Enhance Fermentation, and Promote Ethanol Production

open access: yes, 2019
The development of sustainable protocols for enhancing the production of ethanol is highly important for its utilization in automotive transportation and energy sector.
Supriya Sasmal (6649376)   +3 more
core   +4 more sources

Hydration of urea and alkylated urea derivatives

open access: yesThe Journal of Chemical Physics, 2018
Compressibility data and broadband dielectric spectra of aqueous solutions of urea and some of its alkylated derivatives have been evaluated to yield their numbers Nh of hydration water molecules per molecule of solute. Nh values in a broad range of solute concentrations are discussed and are compared to hydration numbers of other relevant molecules ...
openaire   +3 more sources

Raman spectroscopy of urea and urea-intercalated kaolinites at 77K [PDF]

open access: yes, 2000
The Raman spectra of urea and urea-intercalated kaolinites have been recorded at 77K using a Renishaw Raman microprobe equipped with liquid nitrogen cooled microscope stage.
Kristof, Janos   +4 more
core   +2 more sources

Effect of nitrogen fertilization on productivity and quality of Mombasa forage (Megathyrsus maximum cv. Mombasa)

open access: yesActa Agronómica, 2017
Mombasa grass is very demanding and responsive to soil fertility. The objective of the present study was to evaluate forage production and the correlation among crude protein and the green color index of leaves of Megathyrsus maximum cultivar Mombasa in ...
Carolina Munari Escarela   +4 more
doaj   +1 more source

Urea-Modified Self-Assembling Peptide Amphiphiles That Form Well-Defined Nanostructures and Hydrogels for Biomedical Applications

open access: yes, 2022
Hydrogen bonding plays a critical role in the self-assembly of peptide amphiphiles (PAs). Herein, we studied the effect of replacing the amide linkage between the peptide and lipid portions of the PA with a urea group, which possesses an additional ...
Jeffrey Comer   +13 more
core   +1 more source

Effect of DFPP on Ferroptosis in Peripheral Blood CD14+ Monocytes of Hyperlipidemic Patients Involving the ACSL4/LPCAT3/ALOX5 Pathway

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Hyperlipidemia is a major risk factor for atherosclerotic cardiovascular disease (ASCVD). Although statins are the cornerstone of lipid‐lowering therapy, their use may be limited in some patients by adverse effects. This study evaluated the possible impact of non‐drug treatment using double‐filtration plasmapheresis (DFPP) on CD14+
Yun Cheng   +3 more
wiley   +1 more source

Comparison of Ammonia Volatilization from Inorganic and Organic Fertilizers during Chinese Cabbage Cultivation [PDF]

open access: yes대한환경공학회지
Ammonia (NH3) volatilization from nitrogen fertilizers is a major contributor to atmospheric particulate matter, posing risks to environmental and agricultural sustainability.
Eun-Chae Im, Seong-Jik Park
doaj   +1 more source

Removal of Phenol Pollutants by Modification Molecular Sieves 13X [PDF]

open access: yesEngineering and Technology Journal, 2009
Molecular sieves type 13X was modified by treatment with saturated solution of urea or thiourea and adding of sodium silicate as binder to give homogeneous admixture in approximate weight percent, 20% urea or thiourea, 30% binder, and 50% MS13X.
Laith S. Sabri, Jabir Shanshool
doaj   +1 more source

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