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Now showing items 41-50 of 94
In-situ analysis of volatiles obtained by catalytic cracking of polyethylene with HZSM-5, HY, and HMCM-41 /
(2002)
When polymer/catalyst samples are heated in hydrogen, the extent of hydrogenation is reflected by reduced residue content and variations in Ea versus temperature curves. The addition of platinum increases volatile aromatic ...
Studies on selected enzymes of the alpha-aminoadipate pathway for lysine biosynthesis in Saccharomyces cerevisiae.
(2005)
Homocitrate synthase (HCS) catalyzes one of the regulated steps of the alpha-aminoadipate pathway for Lys biosynthesis in fungi. His-tagged HCS from Saccharomyces cerevisiae was purified to about 98% using a Ni-NTA resin ...
Synthesis and carbon-13 NMR studies of liquid crystals.
(2000)
Eight series of liquid crystals containing an electron-donating group at one end of a conjugated system and an electron-withdrawing group at the other end have been synthesized. The electron-donating group is 4- ...
Synthesis, structure and electrochemical performance of poly(ethylenimine)-based electrolytes.
(2004)
Ion conducting polymers have found application as the electrolyte host in lithium batteries and proton exchange membrane fuel cells as a result of desirable processing and adequate ionic conductivity. Poly(ethylenimine) ...
Polyamine-based polymer electrolyte modification and performance.
(2005)
Finally, lithium secondary batteries that function at room temperature were built using LPAG2EI based SPE and recycled at different temperatures and drain rates for preliminary evaluation. Although the recycling results ...
Hyrdrogen [sic] bonding interactions and cation coordination effects in nitrogen-based polymer electrolytes and model systems /
(2006)
Studies of the model-salt solutions were considerably aided by the formation of crystalline compounds whose structures were solved by single crystal x-ray diffraction methods. The frequency shifts observed in the NH ...
Investigation of matrix interferences in quantitative liquid chromatography-electrospray ionization mass spectrometry analysis of biological samples.
(2007)
The mechanisms by which endogenous GPCho lipids interfere with analyte electrospray ionization were investigated with the aid of a partition equilibrium mathematical model. A linear equation, which was derived by modifying ...
Synthesis and spectroscopic studies of polymer electrolyte hosts: Linear poly(ethylenimine), linear poly(N-methylethylenimine) and linear poly(N-2-(2-methoxyethoxy)ethylethylenimine).
(2002)
Three topics that are of interest to scientists in polymer electrolytes are: (1) ion-ion interactions; (2) ion-polymer interactions; and (3) how these interactions correlate to ionic conductivity. A spectroscopic study of ...
Characterization of crystalline and amorphous phases in poly(N-methylethylenimine) polymer electrolytes and model systems.
(2003)
LPEI is analogous to PEO, except LPEI has a heteroatom that is synthetically versatile because different side groups can be readily attached. LPEI:salt systems are not well understood as polymer electrolytes. Therefore, ...