نتایج جستجو برای: alkaline polymer flooding

تعداد نتایج: 148633  

Journal: :Journal of Petroleum Exploration and Production Technology 2012

Journal: :SIAM Journal of Applied Mathematics 2009
Adam Z. Weber John Newman

In this paper, a quasi-potential approach along with conformal mapping is used to model the diffusion media of a polymer-electrolyte fuel cell. This method provides a series solution that is grid independent and only requires integration along a single boundary to solve the problem. The approach accounts for nonisothermal phenomena, two-phase flow, correct placement of the electronic potential ...

2007
John R. Varcoe Robert C. T. Slade Eric Lam How Yee Simon D. Poynton Daniel J. Driscoll

Investigations into the ex situ methanol, ethanol and ethylene glycol permeabilities of alkaline polymer electrolyte membranes John R. Varcoe, Robert C. T. Slade, Eric Lam How Yee, Simon D. Poynton, Daniel J. Driscoll Department of Chemistry, University of Surrey, Guildford GU2 7XH, United Kingdom. * Corresponding Author: Tel: +44 (0)1483 682616; Fax: +44 (0)1483 686851; E-mail: j.varcoe@surrey...

Journal: :Science 1980
R Hayatsu R E Winans R G Scott R L McBeth L P Moore M H Studier

Seven phenolic acids and many nonphenolic organic acids, including large amounts of meta-hydroxy (3-hydroxy) benzoic acid and 3-hydroxy-1,5-benzene-dicarboxylic acid, were obtained from the organic polymer of the Murchison C2 chondrite upon oxidation with alkaline cupric oxide. The phenolic acids apparently were derived from phenolic ethers in the polymer, which in turn probably were formed fro...

Journal: :Journal of bacteriology 1980
K Jann B Jann M A Schmidt W F Vann

The primary structure of the K2 antigen of Escherichia coli was elucidated by composition, alkaline fragmentation, dephosphorylation with hydrofluoric acid, periodate oxidation, and methylation analysis. The polymer contains galactose in the pyranosidic and furanosidic ring form. It consists of phosphogaolactopyranosyl glycerol and phosphagalactofuranosyl glycerol units in a molar ratio of 2:1....

Journal: :The Yale Journal of Biology and Medicine 1973
V. J. Hearing M. A. Lutzner

For many years the major problem impeding the elucidation of the structure of melanin and the melanosome has been the insolubility of the melanin polymer. To date, alkaline and acid hydrolysis seem to be the only methods available which can completely solubilize the melanosome (1); unfortunately, both methods degrade the constituents of the organelle other than the melanin polymer. The recent e...

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