Prototype development and testing of ultrafine grain NZP ceramics. Quarterly technical progress report No. 3, October 28, 1995--January 27, 1996 (open access)

Prototype development and testing of ultrafine grain NZP ceramics. Quarterly technical progress report No. 3, October 28, 1995--January 27, 1996

Caterpillar has been developing advanced low-heat-rejection (LHR) engine designs because by insulating the combustion chamber components for reduced heat rejection, improved fuel economy and emission reduction can be achieved. The insulation eliminates heat loss during the closed portion of the cycle and increases the combustion temperature. Increased combustion temperatures improve emissions by reducing the amount of particulate or smoke. The higher combustion temperatures also provide additional energy to drive a turbocharger that, in turn, improves the overall efficiency of the engine system and results in increased fuel economy.
Date: February 8, 1996
Creator: Brown, J. J.
System: The UNT Digital Library
Slurry phase iron catalysts for indirect coal liquefaction. First semi-annual progress report, July 5, 1995--January 4, 1996 (open access)

Slurry phase iron catalysts for indirect coal liquefaction. First semi-annual progress report, July 5, 1995--January 4, 1996

Objectives are to study factors controlling attrition resistance of slurry phase Fe catalysts, synthesize novel precipitated catalysts that overcome some of the limitations of current generation catalysts, and study catalyst-binder interactions using model catalysts. A study of Fe/silica (binder) interactions has been started. Study of effects of Cu on reducibility of Fe catalysts showed that small amounts of Cu can facilitate reduction of Fe{sub 2}O{sub 3} to {alpha}-Fe. Work with Nancy Jackson (Sandia) on carbon deposits in Fe F-T catalysts showed good correlation between peak temperature in TPR and the carbon as seen by TEM. Analyses of samples from Dr. Burtron Davis (U. KY) by XRD and TEM showed that the active catalyst contains small crystallites of iron carbide while the deactivated catalyst had significant transformation into large magnetite crystals. It is felt that improper passivation of these catalysts can lead to mis-identification of the phase in working F-T catalysts.
Date: February 8, 1996
Creator: Datye, A.K.
System: The UNT Digital Library
Iron regulation of gene expression in the Bradyrhizobium japonicum/soybean symbiosis. Final technical report, June 1, 1991--May 31, 1995 (open access)

Iron regulation of gene expression in the Bradyrhizobium japonicum/soybean symbiosis. Final technical report, June 1, 1991--May 31, 1995

B.japonicum produces ALA in a reaction catalyzed by the product of the hemA gene. Expression of the gene is affected by iron availability. To address the question of how the 5 prime untranslated region of the hemA transcript is involved in iron regulation, evenly spaced 10bp deletions within the hemA leader region was constructed and effects on hemA-lacZ expression were determined.
Date: February 8, 1996
Creator: Guerinot, M. L.
System: The UNT Digital Library
Final report Hanford environmental compliance project 89-D-172 (open access)

Final report Hanford environmental compliance project 89-D-172

The Hanford Environmental Compliance (HEC) Project is unique in that it consisted of 14 subprojects which varied in project scope and were funded from more that one program. This report describes the HEC Project from inception to completion and the scope, schedule, and cost of the individual subprojects. Also provided are the individual subproject Cost closing statements and Project completion reports accompanied by construction photographs and illustrations.
Date: February 8, 1996
Creator: Kelly, J.R.
System: The UNT Digital Library
Attaching client processors to the NSL with HIPPI IPI-3 (open access)

Attaching client processors to the NSL with HIPPI IPI-3

The National Storage Laboratory (NSL) is currently implementing a prototype storage system that utilizes network attached high performance storage devices to transfer data directly between storage devices and client processors using HIPPI IPI-3. The client processors in use at the NSL include Cray YMP-C90 supercomputers, IBM RISC System 6000 workstations, Silicon Graphics workstations, SUN workstations, and a PsiTech frame buffer. This paper describes the HIPPI IPI-3 interface between the client processors and the storage devices. It is intended to serve as a guide for vendors who desire to connect their products to the NSL. Clients direct their requests to a distributed storage system. A typical storage system will contain multiple storage devices. The storage system map client`s files onto regions on the storage devices. At the NSL, the data transfers are performed directly between the client processors and the storage devices, bypassing any processors in the storage system. The protocol used between the client processors and the storage devices is HIPPI IPI-3 third party copy. When a client processor wants to read or write data to or from the storage system, the client processor sends a request to the storage system across a control connection. The control path to the …
Date: February 8, 1996
Creator: unknown
System: The UNT Digital Library