Results 81 to 90 of about 22,346 (250)

Determination of Hydroquinone Dioxygenase Activity

Bio-Protocol, 2015
We recently demonstrated the presence of a quinone detoxification pathway present in Firmicutes. It is based on two enzyme activities, namely a hydroquinone dioxygenase, YaiA, described here, and a hydroquinone reductase, YaiB, described in a separate ...
Stefano Mancini, Marc Solioz
doaj   +1 more source

A Sustainable and Low‐Cost Zn‐Lignosulfonate Redox Flow Battery

Batteries &Supercaps, EarlyView.
A cost‐effective Zn/lignosulfonate (NaLS) hybrid flow battery using 20 kDa NaLS delivers 3.52 Ah L−1 at 30 mM, with an average discharge voltage of 1.01 V, outperforming smaller NaLS. This sustainable design leverages industrial and bio‐based lignosulfonates, cheaper size exclusion membrane, and abundant Zn for ecofriendly, scalable energy storage ...
Athul Seshadri Ramanujam, Paula Navalpotro, Nagaraj Patil, Rebeca Marcilla   +3 more
wiley   +1 more source

Bioluminescent Monitoring: Detoxification of Phenol Solutions by Humic Substances and UV-irradiation [PDF]

Журнал Сибирского федерального университета: Серия Биология, 2008
The study demonstrates redox activity of humic substances in solutions of organic reducers and oxidizers; a series of homologous 1,4-hydroquinones (phenols) and their oxidized forms (1,4-quinones) was taken as an example.
Anna S. Tarasova, Nadezhda S. Kudryasheva, Elena S. Fedorova, Devard I. Stom   +3 more
doaj  

Development of a co‐culture of Ureibacillus thermosphaericus and Cupriavidus taiwanensis for inhibitors removal from hemicellulose prehydrolysate

Biotechnology Progress, EarlyView.
For biofuels production, hemicellulose pre‐hydrolysate is considered as an attractive feedstock rich in fermentable sugars. The pre‐hydrolysate derived from lignocellulosic biomass comprises, along with sugars, several inhibitors which can hamper its efficient conversion.
Mariem Theiri, Mariya Marinova, Hassan Chadjaa, Mario Jolicoeur   +3 more
wiley   +1 more source

NQO2 is a reactive oxygen species generating off-target for acetaminophen [PDF]

, 2014
[Image: see text] The analgesic and antipyretic compound acetaminophen (paracetamol) is one of the most used drugs worldwide. Acetaminophen overdose is also the most common cause for acute liver toxicity.
Ahn K. S., Andersson D. A., Antoine M., Bajt M. L., Bantscheff M., Bessems J. G., Buryanovskyy L., Celli C. M., Cheung C., Chung C. W., Cohen S. D., Cover C., Dahlin D. C., Forman H. J., Fu Y., Graham G. G., Graves P. R., Jaeschke H., James L. P., James L. P., Janbaz K. H., Kheradpezhouh E., Knight T. R., Knox R. J., Laukkanen M. O., Liao S., Lister C. F., Long D. J., Manyike P. T., Martinez Molina D., McGill M. R., Miettinen T. P., Mikael Björklund, Moore M., Moynihan R., Niesen F. H., Nosjean O., Reybier K., Sener G., Shah A. D., Shuhendler A. J., Teemu P. Miettinen, Tirmenstein M. A., Tripathy D., Vella F., Winger J. A.   +45 more
core   +4 more sources

Modelling of continuous low‐temperature emulsion co‐polymerization in 3D‐printed reactor

The Canadian Journal of Chemical Engineering, EarlyView.
A kinetic model for the emulsion copolymerization of butyl acrylate/styrene at low temperatures is proposed and validated against experiments with a redox initiator system. The model was successfully transferred to a 3D‐printed tubular reactor and conversions of more than 80% and small particles sizes below 40 nm were observed.
Ferel Issa, Andreas Reinbeck, Kristina M. Zentel   +2 more
wiley   +1 more source

Unravelling the initiator‐only stage in alginate grafting: Radical‐induced depolymerization and its impact on acrylamide grafting efficiency

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Free‐radical grafting of natural polymers often assumes that initiators only create active sites before monomer addition. We tested this by exposing sodium alginate to potassium persulphate (KPS) under typical grafting conditions without monomer (acrylamide).
Gustavo P. Zago, João B. P. Soares
wiley   +1 more source

Ocronose exógena induzida por hidroquinona: relato de quatro casos Exogenous ochronosis hydroquinone induced: a report of four cases

Anais Brasileiros de Dermatologia, 2010
A ocronose exógena é uma dermatose, aparentemente pouco frequente, caracterizada por hiperpigmentação negro-azulada fuliginosa, localizada na região onde foi aplicado o agente causador.
Jonas Ribas, Antonio Pedro Mendes Schettini, Melissa de Sousa Melo Cavalcante   +2 more
doaj   +1 more source

Tunable amylopectin graft copolymers for flocculating and dewatering iron ore tailings

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Polyacrylamide (PAM), the standard flocculant for mining tailings, often produces turbid supernatants and poorly dewatered sediments, limiting water reuse and tailings densification. We synthesized amylopectin‐graft‐poly[(2‐methacryloyloxy)ethyl]trimethylammonium chloride (AP‐g‐PMETAC) copolymers with systematically varied graft frequency (N = 
Gustavo P. Zago, Reinaldo Giudici, João B. P. Soares   +2 more
wiley   +1 more source

Synthesis of Two New Hemisynthetic Diterpenylhydroquinones from Natural Ent-Labdanes

Molecules, 2009
The synthesis and structural determination of two new diterpenylhydroquinones: 2β-acetoxy-15-phenyl-(22,25-dihydroxy)-ent-labda-8(17),13(E)-diene(1) and 2β-hydroxy-15-phenyl-(22,25-dihydroxy)-ent-labda-8(17),13(E)-dieneis reported (2).
Mauricio Cuellar Fritis, Joan Villena García, Luis Espinoza Catalán, Héctor Carrasco Altamirano, Alejandro Madrid Villegas, Karen Catalán Marín   +5 more
doaj   +1 more source