Results 141 to 150 of about 43,948 (300)

Remoção combinada de DQQ e nitrogênio via nitrito de água residuária da suinocultura em um ùnico reator SBR [PDF]

open access: yes, 2008
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-graduação em Engenharia QuímicaA suinocultura é uma atividade importante no estado de Santa Catarina.
Hasegawa, Fabiana Akemi
core  

Nitrooxylation in Organic Synthesis: From Classical Nitrate Ester Formation to Modern Catalytic Strategies

open access: yesChemistry – A European Journal, EarlyView.
Nitrooxylation—the installation of nitrate esters (–ONO2) has evolved from classical mixed‐acid protocols to catalytic and mechano‐, flow‐, photo‐, and electrochemical strategies. This review delineates ionic and radical manifolds for C–ONO2 bond formation, emphasizing mechanistic control, selected substrate scope, and selectivity.
Jayanta Dey, Dmitry Katayev
wiley   +1 more source

Oxidation of nitrite to nitrate in isolated erythrocytes: a possible mechanism for adaptation to environmental nitrite

open access: yes, 1997
Rainbow trout (Oncorhynchus mykiss) were exposed to nitrite (0.007 mmol NO2-· L-1) for 48 days. During the first 14 days, the methaemoglobin concentration in the blood as well as the NO2-and NO3-concentrations in the plasma increased whereas further days
C Doblander, R Lackner
core   +1 more source

Fluorogenic Sydnones for Bioorthogonal Labeling of DNA

open access: yesChemistry – A European Journal, EarlyView.
Conjugates of sydnones with cyanine‐styryl dyes combine bioorthogonal reactivity with fluorogenicity. The reactivity with bicyclo[6.1.0]non‐4‐yne (BCN)‐modified DNA showed second‐order rate constants of up to k2 = 2,300 M−1s−1 and fluorescence turn‐on by one magnitude of order.
Kerstin Müller   +1 more
wiley   +1 more source

Effect of anoxic transformation processes in municipal wastewater on pH and oxidation reduction potential

open access: yes, 2008
This paper presents findings of an investigation into the relationships between nitrate utilization rate (NUR), pH and oxidation reduction potential (ORP) during anoxic transformation processes in municipal wastewater.
Kohsaka, K., Abdul-Talib, S., Yin, C-Y
core  

The key role of nitric oxide in hypoxia: hypoxic vasodilation and energy supply-demand matching [PDF]

open access: yes
Significance: a mismatch between energy supply and demand induces tissue hypoxia with the potential to cause cell death and organ failure. Whenever arterial oxygen concentration is reduced, increases in blood flow - 'hypoxic vasodilation' - occur in an ...
Feelisch, Martin   +3 more
core   +1 more source

Enrichment and identification of a moderately acidophilic nitrite-oxidizing bacterium

open access: yesWater Research X
This study enriched a novel nitrite-oxidizing bacterium (NOB, ‘Candidatus Nitrobacter acidophilus’) in a laboratory reactor operating at pH 4.5 for treating low-strength ammonia wastewater. Batch experiments showed that ‘Ca. N.
Jun Xia   +5 more
doaj   +1 more source

A Unified Approach for the Synthesis of Conformationally Locked and sp2‐sp3 Fused Hybrids

open access: yesChemistry – A European Journal, EarlyView.
This study presents a systematic platform to build rigid sp2–sp3 hybrids via benzyne cycloadditions. Arene‑fused bicyclic oxa‐, aza‐, and carbocycles are converted into medicinally relevant amino acids and applied to Enalapril analogues synthesis. The hybrids combine aromatic interactions with 3D rigidity, tuning lipophilicity, pKa, and solubility ...
Ervis Saraci   +8 more
wiley   +1 more source

Propriedades tecnológicas de Lactobacillus plantarum isolados de salames artesanais e aplicado como cultivo iniciador em salame tipo milano [PDF]

open access: yes, 2007
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Ciência dos Alimentos.O objetivo do presente trabalho foi obter uma cultura ácido láctica, como cultivo iniciador para produtos cárneos, isolada ...
Sawitzki, Maristela Cortez
core  

Exploring the upper pH limits of nitrite oxidation: diversity, ecophysiology, and adaptive traits of haloalkalitolerant Nitrospira. [PDF]

open access: yesISME J, 2020
Daebeler A   +11 more
europepmc   +1 more source

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