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Stimuli-responsive polymer-grafted lipid-based complex fluids as organized media for supramolecular photochemistry
Recent studies involving the use of micelles, reverse micelles, and microemulsions as organized microheterogeneous media for effecting photochemical transformations have led to growing recognition that the nature of the reaction medium (i.e., microenvironment) may strongly influence the course and efficiency of photoinduced electron transfer. Of particular interest in photochemical energy conversion research is the study of such effects in natural photosynthesis, the process whereby plants and photosynthetic bacteria convert light into chemical energy. The primary process in photosynthesis occurs in trasmembrane pigment-protein complexes called reaction centers (RCs), where following the absorption of light, primary charge separation occurs. This electrochemical energy is stored, and the initial charge separation used to drive all subsequent electron and proton transfer reactions in photosynthesis. One area of current research interest is the determination of the effect of conformational changes in detergent-solubilized RCs on electron transfer. In this report, the authors consider a related issue: the introduction of RCs into biomembrane mimetics and its impact on protein conformation, orientation, and function. As a medium for these studies, they have employed a recently developed stimulus-responsive complex fluid (smart material) that possesses the ability to respond to an environmental change/external stimulus on a molecular level and amplify it …
Date:
February 11, 2000
Creator:
Firestone, M. A.; Tiede, D. M.; Seifert, S. & Thiyagarajan, P.
Object Type:
Article
System:
The UNT Digital Library
A survey of packages for large linear systems
This paper evaluates portable software packages for the iterative solution of very large sparse linear systems on parallel architectures. While we cannot hope to tell individual users which package will best suit their needs, we do hope that our systematic evaluation provides essential unbiased information about the packages and the evaluation process may serve as an example on how to evaluate these packages. The information contained here include feature comparisons, usability evaluations and performance characterizations. This review is primarily focused on self-contained packages that can be easily integrated into an existing program and are capable of computing solutions to very large sparse linear systems of equations. More specifically, it concentrates on portable parallel linear system solution packages that provide iterative solution schemes and related preconditioning schemes because iterative methods are more frequently used than competing schemes such as direct methods. The eight packages evaluated are: Aztec, BlockSolve,ISIS++, LINSOL, P-SPARSLIB, PARASOL, PETSc, and PINEAPL. Among the eight portable parallel iterative linear system solvers reviewed, we recommend PETSc and Aztec for most application programmers because they have well designed user interface, extensive documentation and very responsive user support. Both PETSc and Aztec are written in the C language and are callable from …
Date:
February 11, 2000
Creator:
Wu, Kesheng & Milne, Brent
Object Type:
Report
System:
The UNT Digital Library
Texas Register, Volume 25, Number 6, Pages 981-1218, February 11, 2000
A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date:
February 11, 2000
Creator:
Texas. Secretary of State.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Texas Register, Volume 25, Number 7, Pages 1219-1442, February 18, 2000
A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date:
February 11, 2000
Creator:
Texas. Secretary of State.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
University Press (Beaumont, Tex.), Vol. 76, No. 31, Ed. 1 Friday, February 11, 2000
Semiweekly newspaper from Lamar University in Beaumont, Texas that includes local, national, and campus news along with advertising.
Date:
February 11, 2000
Creator:
Bordeman, Christina
Object Type:
Newspaper
System:
The Portal to Texas History
[Wake Program for Catherine James, February 11, 2000]
Wake program for Mrs. Catherine James. The wake was held Friday, February 11, 2000 at Second Baptist Church, officiated by Rev. Robert L. Jemerson, Pastor. Funeral arrangements were made through Lewis Funeral Home and she was buried in Sunset Memorial Park in San Antonio, Texas. Includes a newspaper clipping.
Date:
February 11, 2000
Creator:
unknown
Object Type:
Pamphlet
System:
The Portal to Texas History