Now showing items 21-30 of 48
Application of membrane-based preferential transport to whole broth processing
(Wiley Subscription Services, Inc., A Wiley Company, 1997-08-20)
Preferential transport in adsorptive membranes can be used to selectively remove biochemicals directly from fermentation broths. During preferential transport, an adsorbing solute is selectively transported across the ...
Use of coimmobilized biological systems to degrade toxic organic compounds
(Wiley Subscription Services, Inc., A Wiley Company, 1991-07)
The concept of coimmobilizing cell mass (and/or enzyme) and adsorbent in a hydrogel matrix for biodegradation of toxic organic chemicals was introduced. Under defined experimental conditions, the coimmobilized system using ...
Effect of adsorbents on degradation of toxic organic compounds by coimmobilized systems
(Wiley Subscription Services, Inc., A Wiley Company, 1992-03-15)
The use of coimmobilized systems for treatment of toxic organic compounds has been proposed. The proposed approach combines the use of adsorbents and laboratory identified microorganisms immobilized in a protective permeable ...
Esterification reactions of lipase in reverse micelles
(Wiley Subscription Services, Inc., A Wiley Company, 1990-04-05)
The activities of lipase from Candida cylindracea and Rhizopus delemar have been investigated in water/AOT/iso-octane reverse micellar media through the use of two esterification reactions: fatty acid-alcohol esterification ...
Charge-coupled device imaging of rapid calcium transients in cultured arterial smooth muscle cells
(Elsevier, 1990)
Transient changes in the concentration of intracellular free calcium are associated with the transduction of primary signals and the subsequent employment of Ca2+ as a second messenger in a multitude of cell types. These ...
Monte Carlo simulations of membrane signal transduction events: Effect of receptor blockers on G-protein activation
(Kluwer Academic Publishers; Biomedical Engineering Society ; Springer Science+Business Media, 1995-05)
Cells have evolved elaborate strategies for sensing, responding to, and interacting with their environment. In many systems, interaction of cell surface receptors with extracellular ligand can activate cellular signal ...
Carbon-hydrogen bond activation over tungsten carbide catalysts
(Elsevier, 1994-08-30)
Tungsten carbides with surface areas ranging from 4 to 39 m2/g were prepared by the temperature-programmed carburization of tungsten oxide and nitride powders with pure CH4 or a 48.9% CH4 in H2 mixture. Oxygen uptakes on ...
Interfacial segregation in Ag-Au, Au-Pd, and Cu-Ni alloys: I. (100) surfaces
(Kluwer Academic Publishers; Springer Science+Business Media, 1993-03)
Atomistic simulations of segregation to (100) free surface in Ag−Au, Au−Pd, and Cu−Ni alloy systems have been performed for a wide range of temperatures and compositions within the solid solution region of these alloy phase ...
High resolution laser spectroscopy of relaxation and the excitation lineshape of excitons in GaAs quantum well structures
(Elsevier, 1990-04-01)
A new class of measurements on GaAs quantum well structures based on frequency domain nonlinear laser spectroscopy is described. Room temperature measurements of the excitation relaxation show an interference effect in the ...
Interfacial segregation in Ag-Au, Au-Pd, and Cu-Ni alloys: II. [001] Σ5 twist grain boundaries
(Kluwer Academic Publishers; Springer Science+Business Media, 1993-03)
Atomistic simulations of segregation to [001] Σ5 twist boundaries in Cu−Ni, Au−Pd, and Ag−Au alloy systems have been performed for a wide range of temperatures and compositions within the solid solution region of these ...