Relevant bibliographies by topics / Urea hydrogen peroxide

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Academic literature on the topic 'Urea hydrogen peroxide'

Author: Grafiati
Published: 4 June 2021
Last updated: 17 February 2022

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Journal articles on the topic "Urea hydrogen peroxide"

1

Taliansky, Sandra. "Urea-Hydrogen Peroxide Complex." Synlett 2005, no. 12 (2005): 1962–63. http://dx.doi.org/10.1055/s-2005-871968.

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2

Li, Zong Quan, Hong Yan Dou, Xiao Qian Chen, and Chao Wang. "Improving Hydrogen Peroxide Bleaching of PRC-APMP by Using Urea." Applied Mechanics and Materials 295-298 (February 2013): 335–38. http://dx.doi.org/10.4028/www.scientific.net/amm.295-298.335.

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Preconditioning Refiner Chemic Alkaline Peroxide Mechanical Pulp (PRC-APMP) is one of the most currently used high yield pulps in China. During the bleaching of PRC-APMP, hydrogen peroxide is a commonly used bleaching agent. In order to improve the bleaching efficiency of PRC-APMP, urea was used as an activator in peroxide bleaching of aspen PRC-APMP. The results showed that the brightness of the urea-based bleached pulp higher than that without urea addition at the same hydrogen peroxide dosage. The physical properties such as the breaking length, tear index and fiber length of the bleached p
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3

A. Valderrama, Jaime, M. Florencia González, and Cristián Torres. "Epoxidation of Quinones with Urea Hydrogen Peroxide." HETEROCYCLES 60, no. 10 (2003): 2343. http://dx.doi.org/10.3987/com-03-9863.

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4

Cooper, Mark S., Harry Heaney, Amanda J. Newbold, and William R. Sanderson. "Oxidation Reactions Using Urea-Hydrogen Peroxide; A Safe Alternative to Anhydrous Hydrogen Peroxide." Synlett 1990, no. 09 (1990): 533–35. http://dx.doi.org/10.1055/s-1990-21156.

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5

Zun, Maria, Dorota Dwornicka, Katarzyna Wojciechowska, et al. "Kinetics of the decomposition and the estimation of the stability of 10% aqueous and non-aqueous hydrogen peroxide solutions." Current Issues in Pharmacy and Medical Sciences 27, no. 4 (2014): 213–16. http://dx.doi.org/10.1515/cipms-2015-0017.

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Abstract In this study, the stability of 10% hydrogen peroxide aqueous and non-aqueous solutions with the addition of 6% (w/w) of urea was evaluated. The solutions were stored at 20°C, 30°C and 40°C, and the decomposition of hydrogen peroxide proceeded according to first-order kinetics. With the addition of the urea in the solutions, the decomposition rate constant increased and the activation energy decreased. The temperature of storage also affected the decomposition of substance, however, 10% hydrogen peroxide solutions prepared in PEG-300, and stabilized with the addition of 6% (w/w) of ur
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6

Lespinas, F., G. Dupuy, F. Revol, and C. Aubry. "Enzymic urea assay: a new colorimetric method based on hydrogen peroxide measurement." Clinical Chemistry 35, no. 4 (1989): 654–58. http://dx.doi.org/10.1093/clinchem/35.4.654.

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Abstract We describe a new enzymic colorimetric method in which urea is measured in serum by use of a single reagent mixture. Ammonia produced by urea hydrolysis, catalyzed by urease, reacts with glutamate and ATP in the presence of glutamine synthetase. The ADP so produced is assayed in reactions catalyzed sequentially by pyruvate kinase and pyruvate oxidase in a system that generates hydrogen peroxide. The hydrogen peroxide is measured at 500 or 550 nm in a reaction catalyzed by horseradish peroxidase, with phenol/4-aminophenazone as the chromogen. The reaction is complete in 15 min at 37 de
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7

Narendranath, N. V., K. C. Thomas, and W. M. Ingledew. "Urea Hydrogen Peroxide Reduces the Numbers of Lactobacilli, Nourishes Yeast, and Leaves No Residues in the Ethanol Fermentation." Applied and Environmental Microbiology 66, no. 10 (2000): 4187–92. http://dx.doi.org/10.1128/aem.66.10.4187-4192.2000.

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ABSTRACT Urea hydrogen peroxide (UHP) at a concentration of 30 to 32 mmol/liter reduced the numbers of five Lactobacillus spp. (Lactobacillus plantarum, L. paracasei,Lactobacillus sp. strain 3, L. rhamnosus, andL. fermentum) from ∼107 to ∼102CFU/ml in a 2-h preincubation at 30°C of normal-gravity wheat mash at ∼21 g of dissolved solids per ml containing normal levels of suspended grain particles. Fermentation was completed 36 h after inoculation of Saccharomyces cerevisiae in the presence of UHP, even when wheat mash was deliberately contaminated (infected) withL. paracasei at ∼107 CFU/ml. The
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8

Zhao, Xiao Ling. "Preparation of Silver Nano-Particles by CO(NH2)2·H2O2." Advanced Materials Research 391-392 (December 2011): 1244–47. http://dx.doi.org/10.4028/www.scientific.net/amr.391-392.1244.

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This article will present using chemical reduction to prepare silver nano-particles, which is a certain improvement base on the traditional hydrogen peroxide (H2O2) Silver ammonia by using a new reductant urea peroxide (CO (NH2) 2•H2O2) to replace hydrogen peroxide. Hydrogen Peroxide silver ammonia is widely used in the nano-silver particles Preparation, however, the nano-silver particles prepared in traditional ways is not homogeneous and very easy agglomerated, therefore, in this experimental by using of urea peroxide as a reductant, under condition of temperature 30°C, 45 nm homogeneous nan
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9

Ball, Matthew C., and Steven Massey. "The thermal decomposition of solid urea hydrogen peroxide." Thermochimica Acta 261 (September 1995): 95–106. http://dx.doi.org/10.1016/0040-6031(95)02399-m.

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10

COOPER, M. S., H. HEANEY, A. J. NEWBOLD, and W. R. SANDERSON. "ChemInform Abstract: Oxidation Reactions Using Urea-Hydrogen Peroxide. A Safe Alternative to Anhydrous Hydrogen Peroxide." ChemInform 22, no. 5 (2010): no. http://dx.doi.org/10.1002/chin.199105124.

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