Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
CRADA Final Report for CRADA Number C
Author: Final Report of Research Carried Out Under DOE CRADA Number BNL-C-95-07
Author: Final Report of Research Carried Out Under DOE CRADA Number BNL-C-94-28
Author: Cimstation/IM Enhanced Data Verification, CRADA Final Report for CRADA Number Y-1292-0162
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 56
Book Description
This report discusses a CRADA code used to enhance the Cimstation in ramifaction of inspection part programs as they are being develop. This report briefly discussed the following topics and contains a code listing in the back: algorithm explanation; Cimstation CAD models; importing inspection point data; need for a new algorithm; details of the algorithms; formulas/mathematics used for the algorithm; algorithm software design diagram; and software function descriptions.
CRADA Final Report for CRADA Number ORNL00-0605
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Navistar and ORNL established this CRADA to develop diesel engine aftertreatment configurations and control strategies that could meet emissions regulations while maintaining or improving vehicle efficiency. The early years of the project focused on reducing the fuel penalty associated with lean NOx trap (LNT), also known as NOx adsorber catalyst regeneration and desulfation. While Navistar pursued engine-based (in-cylinder) approaches to LNT regeneration, complementary experiments at ORNL focused on in-exhaust fuel injection. ORNL developed a PC-based controller for transient electronic control of EGR valve position, intake throttle position, and actuation of fuel injectors in the exhaust system of a Navistar engine installed at Oak Ridge. Aftertreatment systems consisting of different diesel oxidation catalysts (DOCs) in conjunction with a diesel particle filter and LNT were evaluated under quasi-steady-state conditions. Hydrocarbon (HC) species were measured at multiple locations in the exhaust system with Gas chromatograph mass spectrometry (GC-MS) and Fourier transform infrared (FTIR) spectroscopy. Under full-load, rated speed conditions, injection of fuel upstream of the DOC reduced the fuel penalty for a given level of NOx reduction by 10-20%. GC-MS showed that fuel compounds were 'cracked' into smaller hydrocarbon species over the DOC, particularly light alkenes. GC-MS analysis of HC species entering and exiting the LNT showed high utilization of light alkenes, followed by mono-aromatics; branched alkanes passed through the LNT largely unreacted. Follow-on experiments at a 'road load' condition were conducted, revealing that the NOx reduction was better without the DOC at lower temperatures. The improved performance was attributed to the large swings in the NOx adsorber core temperature. Split-injection experiments were conducted with ultra-low sulfur diesel fuel and three pure HC compounds: 1-pentene, toluene, and iso-octane. The pure compound experiments confirmed the previous results regarding hydrocarbon reactivity: 1-pentene was the most efficient LNT reductant, followed by toluene. Injection location had minimal impact on the reactivity of these two compounds. Iso-octane was an ineffective LNT reductant, requiring high doses (resulting in high HC emissions) to achieve reasonable NOx conversions. Diesel fuel reactivity was sensitive to injection location, with the best performance achieved through fuel injection downstream of the DOC. This configuration generated large LNT temperature excursions, which probably improved the efficiency of the NOx storage/reduction process, but also resulted in very high HC emissions. The ORNL team demonstrated an LNT desulfation under 'road load' conditions using throttling, EGR, and in-pipe injection of diesel fuel. Flow reactor characterization of core samples cut from the front and rear of the engine-aged LNT revealed complex spatially dependent degradation mechanisms. The front of the catalyst contained residual sulfates, which impacted NOx storage and conversion efficiencies at high temperatures. The rear of the catalyst showed significant sintering of the washcoat and precious metal particles, resulting in lower NOx conversion efficiencies at low temperatures. Further flow reactor characterization of engine-aged LNT core samples established that low temperature performance was limited by slow release and reduction of stored NOx during regeneration. Carbon monoxide was only effective at regenerating the LNT at temperatures above 200 C; propene was unreactive even at 250 C. Low temperature operation also resulted in unselective NOx reduction, resulting in high emissions of both N2O and NH3. During the latter years of the CRADA, the focus was shifted from LNTs to other aftertreatment devices. Two years of the CRADA were spent developing detailed ammonia SCR device models with sufficient accuracy and computational efficiency to be used in development of model-based ammonia injection control algorithms. ORNL, working closely with partners at Navistar and Mi.
Radioactive Waste Management
Author: Government Reports Announcements & Index
Author: International Symposium on Neutron Capture Therapy
Author: Phytochemicals in Food and Health
Author: Deepak Kumar VermaPublisher: CRC Press
ISBN: 100016456X
Category : Medical
Languages : en
Pages : 294
Book Description
This volume brings together information on the available and newly emerging technologies related to using plant compounds that have a beneficial role in food production. It is divided into sections focusing on phytochemistry of cereals and legumes, phytochemistry of medicinal plants, and technological advances in phytochemical study. Topics include the role of anti-nutritional substances of legumes in human health and on the elimination of such through technological processing sorghum phytochemicals and their processing and use in the development of food products production of nutraceuticals and functional foods of pharmaceutical importance T. cordifolia in the development of its therapeutic use in the food, health, and pharmacology industries polyphenolic compounds of plants, including their biosynthesis process, their classification, function, and role as bioactive compounds
Federal Register
Author: Publisher:
ISBN:
Category : Delegated legislation
Languages : en
Pages : 252
Book Description