NREL PV working with industry, 1st Quarter 1999 (open access)

NREL PV working with industry, 1st Quarter 1999

This issue of PV Working with Industry profiles the participants in the Photovoltaic Manufacturing Technology (PVMaT) project.
Date: May 20, 1999
Creator: Moon, S.
System: The UNT Digital Library
Alternative Fuel News, Vol. 2, No. 7 (open access)

Alternative Fuel News, Vol. 2, No. 7

What's in store for alternative Fuels and advanced technology vehicles in the new millennium? The Clean Cities Coalitions now operate more than 240,000 alternative fuel vehicles in both public and private sectors and have access to more than 4,000 alternative refueling stations. DOE recently announced the selection of 15 proposals that will receive just under $1.7 million in financial assistance to help expand DOE's information dissemination and public outreach efforts for alternative fuels and advanced transportation technologies.
Date: May 20, 1999
Creator: National Renewable Energy Laboratory (U.S.)
System: The UNT Digital Library
Models of Superoxide Dismutases (open access)

Models of Superoxide Dismutases

In this review we have focused much of our discussion on the mechanistic details of how the native enzymes function and how mechanistic developments/insights with synthetic small molecule complexes possessing SOD activity have influenced our understanding of the electron transfer processes involved with the natural enzymes. A few overriding themes have emerged. Clearly, the SOD enzymes operate at near diffusion controlled rates and to achieve such catalytic turnover activity, several important physical principles must be operative. Such fast electron transfer processes requires a role for protons; i.e., proton-coupled electron transfer (''H-atom transfer'') solves the dilemma of charge separation developing in the transition state for the electron transfer step. Additionally, outer-sphere electron transfer is likely a most important pathway for manganese and iron dismutases. This situation arises because the ligand exchange rates on these two ions in water never exceed {approx}10{sup +7} s{sup -1}; consequently, 10{sup +9} catalytic rates require more subtle mechanistic insights. In contrast, copper complexes can achieve diffusion controlled (>10{sup +9}) exchange rates in water; thus inner-sphere electron transfer processes are more likely to be operative in the Cu/Zn enzymes. Recent studies have continued to expand our understanding of the mechanism of action of this most important class …
Date: May 20, 1998
Creator: Cabelli, Diane E.; Riley, Dennis; Rodriguez, Jorge A.; Valentine, Joan Selverstone & Zhu, Haining
System: The UNT Digital Library
Clean Cities Award Winning Coalition: Salt Lake City (open access)

Clean Cities Award Winning Coalition: Salt Lake City

Since its designation as a national Clean City in 1994, Salt Lake Clean Cities has put more than 2,600 alternative fuel vehicles (AFVs) on community streets. The 82 business, nonprofit, and government agencies that comprise the coalition are all dedicated to cleaning the air by reducing vehicle exhaust. Salt Lake Clean Cities has the third largest compressed natural gas and propane-refueling infrastructure in the country, with 98 locations available. They sponsor an annual ''Spring Soiree'' to increase public awareness about the program and educate the public about the benefits of alternative fuel and AFVs.
Date: May 20, 1999
Creator: Kaiser, ICF
System: The UNT Digital Library
Clean Cities Award Winning Coalition: Greater Long Island (open access)

Clean Cities Award Winning Coalition: Greater Long Island

This coalition was the culmination a two-year joint effort by Long Island Lighting Company and the Long Island Regional Planning Board. The group's first alternative fuel project was a single fill compressed natural gas station and a converted Chevrolet Caprice. Since then, the coalition has made steady progress in the alternative fuel and alternative fuel vehicle (AFV) market. They have over 400 AFVs and 21 fueling stations in their operating area. Thanks to strong partnerships with local public and private organizations, they've also passed some of the most progressive state tax incentive legislation for AFVs in the country.
Date: May 20, 1999
Creator: Kaiser, ICF
System: The UNT Digital Library
Clean Cities Award Winning Coalition: Coachella Valley (open access)

Clean Cities Award Winning Coalition: Coachella Valley

Southern California's Coachella Valley became a Clean Cities region in 1996. Since then, they've made great strides. SunLine Transit, the regional public transit provider, was the first transit provider to replace its entire fleet with compressed natural gas buses. They've also built the foundation for a nationally recognized model in the clean air movement, by partnering with Southern California Gas Company to install a refueling station and developing a curriculum for AFV maintenance with the College of the Desert. Today the valley is home to more than 275 AFVs and 15 refueling stations.
Date: May 20, 1999
Creator: Kaiser, ICF
System: The UNT Digital Library
Clean Cities Award Winning Coalition: Greater Philadelphia (open access)

Clean Cities Award Winning Coalition: Greater Philadelphia

Always going beyond expectations, the Greater Philadelphia Clean Cities Program provides its stakeholders with excellent resources to implement alternative fuel projects. They are known as one of the most successful coalitions in the Clean Cities Program, and are a member-funded organization comprised of large government organizations, utilities, and non-profit groups in the Philadelphia metropolitan area. The coalition aggressively promotes alternative fuel vehicle acquisitions; their public outreach efforts target all stakeholders and provide numerous resources to advance the alternative fuel choice.
Date: May 20, 1999
Creator: Kaiser, ICF
System: The UNT Digital Library
Benefits of Parallel I/O in Ab Initio Nuclear Physics Calculations, ICCS 2009 Proceedings (open access)

Benefits of Parallel I/O in Ab Initio Nuclear Physics Calculations, ICCS 2009 Proceedings

Many modern scientific applications rely on highly parallel calculations, which scale to 10's of thousands processors. However, most applications do not concentrate on parallelizing input/output operations. In particular, sequential I/O has been identified as a bottleneck for the highly scalable MFDn (Many Fermion Dynamics for nuclear structure) code performing ab initio nuclear structure calculations. In this paper, we develop interfaces and parallel I/O procedures to use a well-known parallel I/O library in MFDn. As a result, we gain efficient input/output of large datasets along with their portability and ease of use in the downstream processing.
Date: May 20, 2009
Creator: Laghave, Nikhil; Sosonkina, Masha; Maris, Pieter & Vary, James P.
System: The UNT Digital Library
Electronic Structure Calculations and Adaptation Scheme in Multi-core Computing Environments (open access)

Electronic Structure Calculations and Adaptation Scheme in Multi-core Computing Environments

Multi-core processing environments have become the norm in the generic computing environment and are being considered for adding an extra dimension to the execution of any application. The T2 Niagara processor is a very unique environment where it consists of eight cores having a capability of running eight threads simultaneously in each of the cores. Applications like General Atomic and Molecular Electronic Structure (GAMESS), used for ab-initio molecular quantum chemistry calculations, can be good indicators of the performance of such machines and would be a guideline for both hardware designers and application programmers. In this paper we try to benchmark the GAMESS performance on a T2 Niagara processor for a couple of molecules. We also show the suitability of using a middleware based adaptation algorithm on GAMESS on such a multi-core environment.
Date: May 20, 2009
Creator: Seshagiri, Lakshminarasimhan; Sosonkina, Masha & Zhang, Zhao
System: The UNT Digital Library