Bi[3,5-dimethyl-5-(hydroxymethyl)-2-oxomorpholin-3-yl] (DHM-3 dimer). A water-soluble, one-electron reducing agent

1987 ◽  
Vol 52 (14) ◽  
pp. 3073-3081 ◽  
Author(s):  
Giorgio Gaudiano ◽  
Tad H. Koch
Keyword(s):  
Reducing Agent ◽  
Water Soluble

scholarly journals HISTOCHEMICAL INVESTIGATIONS OF A SILVER METHOD FOR AXONS

1959 ◽  
Vol 7 (2) ◽  
pp. 86-92 ◽  
Author(s):  
R. K. WINKELMANN ◽  
ROBERT W. SCHMIT
Keyword(s):  
Silver Oxide ◽  
Dark Field ◽  
Reducing Agent ◽  
Water Soluble ◽  
Silver Ion ◽  
General Distribution ◽  
Amine Groups ◽  
Solubility Studies ◽  
Sulfite Ion

Silver ion is not specific either in location or in action in the present silver method. Studies with radioactive silver, with the dark-field microscope, and with simple reducing solutions demonstrate a general distribution of silver ion in the impregnated tissue. Copper and mercury may be substituted for silver in the impregnating solution. A water-soluble aldehyde is necessary as a fixative. The substrate for staining appears to require the presence of protein-bound amine groups. The product-forming solution does not require the presence of a reducing agent. Sulfite ion is not necessary. All controllable sources of base that were utilized produced the histologic results. The product appears to be silver oxide in terms of the present solubility studies.

Gram scale synthesis of specialized pro-resolving mediator 17( S )-HDHA using lipoxygenase enhanced by water-soluble reducing agent TCEP

2016 ◽  
Vol 26 (2) ◽  
pp. 343-345 ◽  
Author(s):  
Toshimasa Itoh ◽  
Tomoko Saito ◽  
Yoshinori Yamamoto ◽  
Hiroaki Ishida ◽  
Keiko Yamamoto
Keyword(s):  
Reducing Agent ◽  
Water Soluble

Novel Water-Soluble Organosilane Compounds as a Radical Reducing Agent in Aqueous Media

1997 ◽  
Vol 70 (10) ◽  
pp. 2519-2523 ◽  
Author(s):  
Osamu Yamazaki ◽  
Hideo Togo ◽  
Genki Nogami ◽  
Masataka Yokoyama
Keyword(s):  
Aqueous Media ◽  
Reducing Agent ◽  
Water Soluble

scholarly journals Grafted natural polymer as new drag reducing agent: An experimental approach

2012 ◽  
Vol 18 (3) ◽  
pp. 361-371 ◽  
Author(s):  
Hayder Abdulbari ◽  
Nuraffini Kamarulizam ◽  
A.H. Nour
Keyword(s):  
Drag Reduction ◽  
Closed Loop ◽  
Reducing Agent ◽  
Water Soluble ◽  
Experimental Results ◽  
Circulation System ◽  
Additive Concentration ◽  
Gas Oil ◽  
Media Type ◽  
Type Water

The present investigation introduces a new natural drag reducing agent which has the ability to improve the flow in pipelines carrying aqueous or hydrocarbon liquids in turbulent flow. Okra (Abelmoschus esculentus) mucilage drag reduction performance was tested in water and hydrocarbon (gas-oil) media after grafting. The drag reduction test was conducted in a buildup closed loop liquid circulation system consists of two pipes 0.0127 and 0.0381 m Inside Diameter (ID), four testing sections in each pipe (0.5 to 2.0 m), tank, pump and pressure transmitters. Reynolds number (Re), additive concentration and the transported media type (water and gas-oil), were the major drag reduction variables investigated. The experimental results show that, new additive drag reduction ability is high with maximum percentage of drag reduction (%Dr) up to 60% was achieved. The experimental results showed that the drag reduction ability increased by increasing the additive concentration. The %Dr was found to increase by increasing the Re by using the water-soluble additive while it was found to decrease by increasing the Re when using the oil-soluble additive. The %Dr was higher in the 0.0381 m ID pipe. Finally, the grafted and natural mucilage showed high resistance to shear forces when circulated continuously for 200 seconds in the closed-loop system.

ChemInform Abstract: Bi(3,5-dimethyl-5-(hydroxymethyl)-2-oxomorpholin-3-yl) (DHM-3 Dimer). A Water-Soluble, One-Electron Reducing Agent.

ChemInform ◽  
1987 ◽  
Vol 18 (51) ◽  
Author(s):  
G. GAUDIANO ◽  
T. H. KOCH
Keyword(s):  
Reducing Agent ◽  
Water Soluble

Bi[5,5-bis(hydroxymethyl)-3-methyl-2-oxomorpholin-3-yl] (BHM-3 dimer). A low toxicity, water-soluble, one-electron reducing agent

1993 ◽  
Vol 58 (26) ◽  
pp. 7355-7363 ◽  
Author(s):  
Giorgio Gaudiano ◽  
Elizabeth Frank ◽  
Michael S. Wysor ◽  
Steven D. Averbuch ◽  
Tad H. Koch
Keyword(s):  
Reducing Agent ◽  
Water Soluble ◽  
Low Toxicity

Transfer hydrogenation of nitroarenes into anilines by palladium nanoparticles via dehydrogenation of dimethylamine borane complex

RSC Advances ◽  
2015 ◽  
Vol 5 (105) ◽  
pp. 86529-86535 ◽  
Author(s):  
Nilesh M. Patil ◽  
Manohar A. Bhosale ◽  
Bhalchandra M. Bhanage
Keyword(s):  
Catalytic System ◽  
Palladium Nanoparticles ◽  
Reducing Agent ◽  
Water Soluble ◽  
Transfer Hydrogenation ◽  
Dimethylamine Borane

Reduction of nitroarenes to corresponding amines ​via dehydrogenation of dimethylamine borane using Pd NPs as a catalyst. The developed catalytic system uses dimethylamine borane as a reducing agent which is highly stable, water soluble and non-toxic.

Novel Drag-Reducing Agents for Fracturing Treatments Based on Polyacrylamide Containing Weak Labile Links in the Polymer Backbone

SPE Journal ◽  
2012 ◽  
Vol 17 (03) ◽  
pp. 924-930 ◽  
Author(s):  
E.. Kot ◽  
R.K.. K. Saini ◽  
L.R.. R. Norman ◽  
A.. Bismarck
Keyword(s):  
Molecular Weight ◽  
Oil And Gas ◽  
Elevated Temperatures ◽  
Reducing Agents ◽  
Reducing Agent ◽  
Water Soluble ◽  
Weak Links ◽  
Polymer Backbone ◽  
Water Soluble Polymers ◽  
Soluble Polymers

Summary Water-soluble polymers have found extensive use in the oil and gas industry. For instance, high-molecular-weight polymers are very efficient drag-/friction-reducing agents and viscosifiers. Unfortunately, the adsorption of the polymer on the reservoir formation reduces the effectiveness of the recovery of oil and gas from low-permeability formations, such as shale. The availability of water-soluble polymers containing weak links in the backbone of the polymer that can be degraded upon experiencing a certain trigger, such as temperature, pH, or reducing agent, would be very advantageous. Because of the ability of weak links to degrade under certain conditions, such polymers can be used for their intended application and can afterward be degraded in a controlled and predetermined way. The resulting lower-molecular-weight fractions of that polymer lead to a reduced viscosity and quick partitioning into the water phase, and they are also less likely to adsorb onto formation surfaces. Additionally, no oxidizers need to be pumped to break or clean the deposited polymer, thus saving treatment time. It has been proved that using a bifunctional reducing agent containing degradable groups and oxidizing metal ions as a redox couple is an effective method to initiate free-radical polymerization and build degradable groups into the backbone of vinyl polymers. Temperature-degradable but hydrolytically stable azo groups showed the most-desirable results. The presence of azo groups in the backbone of the synthesized polyacrylamide (PAM) was confirmed by H1-NMR spectra and differential scanning calorimetry (DSC). The degradation behavior of the PAM with temperature-sensitive azo groups was characterized using gel permeation chromatography (GPC) and proved that multiple labile links were built into the polymer backbone. It was also found that PAM with azo links in the polymer backbone is as good a drag-reducing agent as pure PAM. However, PAM with azo links in the backbone loses its drag-reduction properties once subjected to elevated temperatures, which for some applications is viewed as an advantage.

Water-soluble poly(4,7,10,13-tetraoxatetradecylmethylsilane): enhanced yield and improved purity via polymerization using graphite-potassium (C8K) as reducing agent

1997 ◽  
pp. 329-330 ◽  
Author(s):  
Thomas J. Cleij ◽  
Stellar K. Y. Tsang ◽  
Leonardus W. Jenneskens
Keyword(s):  
Reducing Agent ◽  
Water Soluble ◽  
Enhanced Yield ◽  
Soluble Poly
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