| Genes Associated with Food Allergy and Eosinophilic Esophagitis |
Sep 2012 |
6 pages |
| Authors:
David Broide; CALIFORNIA UNIV SAN DIEGO LA JOLLA
|
 | The ingestion of food antigens plays an essential role in the development of eosinophilic esophagitis (EE) as total removal of dietary antigens by using an amino acid based oral formula improves clinical symptoms and esophageal histology in 98% of patients with EE within a month. EE is thought to be mediated by both IgE and non-IgE mediated food allergy. In this study we are particularly interested in identifying genes in ... |
|
| Enhancing Seismic Calibration Research Through Software Automation and Scientific Information Management |
Sep 2010 |
12 pages |
| Authors:
Douglas A Dodge; Michael D Ganzberger; Teresa F Hauk; Stanley D Ruppert; LAWRENCE LIVERMORE NATIONAL LAB CA
|
| The National Nuclear Security Administration (NNSA) Ground-Based Nuclear Explosion Monitoring Research and Development (GNEMRD) Program at Lawrence Livermore National Laboratory (LLNL) continues to make significant progress enhancing the process of deriving seismic calibrations and performing scientific integration analysis, and information management with software automation tools. Our tool efforts address the problematic issues of very large datasets and varied formats encountered during seismic calibration research. New information management and analysis tools ... |
|
| An Alternate Air System Concept for Application in a High Pressure Turbine |
MAR 2003 |
11 pages |
| Authors:
Dieter Peitsch; Winfried-Hagen Friedl; BMW ROLLS-ROYCE GMBH DAHLEWITZ (GERMANY)
|
| In 1995, the German government initiated an aerospace research program in order to support the capabilities of german companies in the more and more challenging environment of aerospace business. Engine 3E is the research part of this overall program concentrating on jet engines. It's aim was to develop technologies to reduce the impact of turbojet engines onto the environment, where 3E stands for Efficiency, Economy and Environment. In this research ... |
|
| Obtaining and Processing Information in Pulsed Laser Rangefinders. |
APR 1992 |
|
| Authors:
B. A. Ermakov; M. V. Voznitsky
|
|
| An Integrated Method to Rectify Airborne Radar Imagery Using DEM. |
APR 1992 |
|
| Authors:
T. Toutin; Y. Carbonneau; L. Stlaurent
|
|
| CFAR for Homogeneous Part of High-Resolution Imagery. |
APR 1992 |
|
| Authors:
G. W. Lank; N. M. Chung; ENVIRONMENTAL RESEARCH INST OF MICHIGAN ANN ARBOR
|
|
| Study of the Engine Bird Ingestion Experience of the Boeing 737 Aircraft |
OCT 91 |
194 pages |
| Authors:
Peter W. Hovey; Donald A. Skinn; Joseph J. Wilson; DAYTON UNIV OH RESEARCH INST
|
| The Federal Aviation Administration (FAA) Technical Center initiated a study in October 1986 to determine the numbers, weight, and species of birds which are being ingested into medium and large inlet area turbofan engines and to determine what damage, if any, results. Bird ingestion data were collected for the Boeing-737 model aircraft which uses either the Pratt and Whitney JT8D medium inlet area turbofan engine or the CFM International CFM56 ... |
|
| Evaluation of Military Field-Water Quality. Volume 4. Health Criteria and Recommendations for Standards. Part 2. Interim Standards for Selected Threat Agents and Risks from Exceeding these Standards |
JAN 90 |
|
| Authors:
Jeffrey I. Daniels; LAWRENCE LIVERMORE NATIONAL LAB CA ENVIRONMENTAL SCIENCES DIV
|
 | The purpose of this report is to develop drinking-water standards for field water for selected threat agents of concern, including radioactivity. The threat agents of concern in addition to radioactivity are the classical chemical-warfare (CW) compounds hydrogen cyanide, organophosphorus nerve agents (i.e., GA, GB, GD, and VX), and lewisite (an arsenical vesicant), as well as a fungal metabolite identified only recently as a possible threat agent, the trichothecene mycotoxin, T-2. ... |
|
| Study of the Engine Bird Ingestion Experience of the Boeing 737 Aircraft |
OCT 89 |
106 pages |
| Authors:
Peter W. Hovey; Donald A. Skinn; DAYTON UNIV OH RESEARCH INST
|
| The Federal Aviation Administration (FAA) Technical Center initiated a study in October 1986 to determine the numbers, sizes, and types of birds which are being ingested into medium and large inlet area turbofan engines and to determine what damage, if any, results. Bird ingestion data are being collected for the Boeing-737 model aircraft which uses either the Pratt and Whitney JT8D medium inlet area turbofan engine or the CFM International ... |
|
| Environmental Impact Research Program. Species Profiles: Life Histories and Environmental Requirements of Coastal Vertebrates and Invertebrates Pacific Ocean Region. Report 1. Green Turtle, Chelonia mydas |
JUL 89 |
27 pages |
| Authors:
Robert G. Forsyth; George H. Balazs; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB
|
| Species profiles are literature summaries of the taxonomy, morphology, distribution, life history, and environmental requirements of aquatic species. They are designed to assist in environmental impact assessments. The green turtle, Chelonia mydas, is found throughout the Pacific Ocean region. Its status is listed as endangered. Females nest on a 2-, 3-, or > or = 4-year cycle, laying one to six clutches per season and averaging between 100 and 110 ... |
|
| Characterization of Dust Environments for the F-107, TF-33, and J-57 Engine Tests |
31 MAR 1988 |
74 pages |
| Authors:
P. J. Rausch; B. L. Yoon; R. A. Greene; G. Rawson; T. A. Mazzola; R AND D ASSOCIATES MARINA DEL REY CA
|
| Environment limits are presented to guide a program for evaluating the potential hazards to turbojet aircraft engines from ingested dust generated during a nuclear exchange. Nuclear dust cloud environment limits are developed and used to define test conditions for specified engines on current strategic aircraft. The study emphasizes the glass component of the dust clouds. Estimates of particle size distribution are presented. Dust cloud characteristics (composition, size, stabilization altitude, and ... |
|
| Influence of Altitude and Caffeine during Rest and Exercise on Plasma Levels of Proenkephalin Peptide F |
FEB 88 |
|
| Authors:
William J. Kraemer; Paul B. Bock; Charles S. Fulco; Scott E. Gordon; Jeff P. Bonner; ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA
|
| The purpose of this study was to examine the resting and exercise response patterns of plasma Peptide F immunoreactivity (ir) to altitude exposure (4300m) and caffeine ingestion (4mg.KgBW-1). Nine healthy male subjects performed exercise tests to exhaustion at sea level, during an acute altitude exposure (1 hr. hypobaric chamber) and after a chronic (17 day sojourn) altitude exposure. Using a randomized, double-blind/placebo experimental design, a placebo or caffeine drink was ... |
|
| Disk Pumping Test |
SEP 87 |
|
| Authors:
D. J. Graber; W. A. Daniels; B. V. Johnson; PRATT AND WHITNEY WEST PALM BEACH FL GOVERNMENT PRODUCTS DIV
|
| An experimental study of secondary flows in gas turbine engines was conducted with cold flow models to develop an understanding of the disk pumping flow characteristics within a variety of disk/cavity configurations. Turbine disk torque experiments were conducted with co-rotating, counter-rotating, and one rotating/one static coaxial disk combinations. The experiments were conducted with selected combinations of disk shape, diaphragm between the rotating disks, bolts, and partial bolt covers. Turbine rim ... |
|
| High Velocity Exhaust Diffuser and Water Baffle. |
27 APR 1982 |
|
| Authors:
Herbert R. Streb; DEPARTMENT OF THE NAVY WASHINGTON DC
|
| A diffuser and baffle device prevents sea water intrusion or ingestion into a marine gas turbine engine exhaust system without significantly increasing exhaust back pressure. Inboard and outboard rows of vertical turning vanes are separated by a gap and effect successive bends of the exhaust flow in opposite directions while affording an increase in cross-sectional area. The outboard vanes are slotted at their inboard edge portions, and the inboard vanes ... |
|
| Dust-Cloud Effects on Aircraft Engines--Emerging Issues and New Damage Mechanisms: A Case Study of a Mt. St. Helens Experience and Its Implications for Nuclear-Weapon-Lofted Dust-Cloud Effects |
01 MAR 1982 |
137 pages |
| Authors:
C. B. Gabbard; R. E. LeLevier; J. F. W. Parry; R AND D ASSOCIATES MARINA DEL REY CA
|
| The May 1980 eruptions of Mt. St. Helens produced high-altitude dust clouds that presented several difficulties to aircraft. Most consequences were fairly minor routing changes and flight delays, but some in-flight orifice clogging and abrasion damage was encountered. This report provides a short profile of the most severe incident: a Transamerica Hercules L-100 (C-130 equivalent) cargo aircraft lost two engines and suffered power losses in the two remaining ones after ... |
|
| Foreign Object Impact Design Criteria. Volume III |
FEB 1982 |
134 pages |
| Authors:
Albert F. Storace; GENERAL ELECTRIC CO CINCINNATI OH AIRCRAFT ENGINE BUSINESS GROUP
|
| The program objective is to establish specific design criteria and provide the analytical design tools to assess and improve the foreign object damage (FOD) tolerance of turbine engine fan and compressor blading. The program will aid in the design of more efficient, damage-tolerant blading by replacing trial-and-error FOD test and evaluation practices with systematic transient- structural-analysis methods, test procedures, and design criteria. Task I has been completed. A design structure ... |
|
| Use of Catapult Slot-Seal-System to Control Above-Deck Steam Emission. |
30 JUL 1973 |
|
| Authors:
Robert L. Schollenberger; NAVAL AIR TEST FACILITY LAKEHURST NJ
|
| This report deals with the efforts put forth to develop a catapult slot-seal-system design to limit the emission of steam from the catapult trough during aircraft launches. This system produced satisfactory results on the TC13 Mod 0 catapult but is yet to be completely evaluated on a shipboard catapult. |
|
| UH-1N Category II Tropical Weather Tests. |
FEB 1971 |
|
| Authors:
James A. Ford; Theodore E. Angle; AIR FORCE FLIGHT TEST CENTER EDWARDS AFB CA
|
| Limited systems tests were conducted during a 34.8-flight hour evaluation of the UH-1N helicopter. These tests were conducted at Howard AFB, Canal Zone, to determine the adequacy of the UH-1N systems and components during operation after extended exposure to the tropical environment. Protection against the environment was adequate except for several instances of minor surface corrosion and numerous water leaks. Propulsion system operation was satisfactory. Static and background noise existed ... |
|
| Mechanisms of Sand and Dust Erosion in Gas Turbine Engines. |
30 JUN 1969 |
|
| Authors:
C. E. Smeltzer; M. E. Gulden; W. A. Compton; SOLAR TURBINES INTERNATIONAL SAN DIEGO CA
|
| Dust erosion damage of military gas turbines is a serious problem in many current service areas. The subject program is designed to gain an improved understanding of the various mechanisms of dust erosion, as a basis for possible future development of turbine materials with improved innate erosion resistance. A materials science approach to the problem is emphasized, to observe, measure, and study erosion phenomena at the target surface. The object ... |
|
| Checkout of Turbine Engine Foreign Object Damage. |
JUN 1969 |
|
| Authors:
Jack E. Bridges; Ronald B. Schwab; IIT RESEARCH INST CHICAGO IL
|
| Since operation of a turbine engine which contains foreign object damage (FOD) may result in either fatigue failure of damaged parts or possible catastrophic failure of the entire engine, the detection and assessment of the damage severity as well as the compressor's operational status condition is important. On the other hand, premature overhaul of the engine, based only upon visual inspection of the first-stage and second-stage blades, results in considerable ... |
|
| A Comprehensive Review of V/STOL Downwash Impingement with Emphasis on Wind Induced Recirculation. |
MAR 1969 |
|
| Authors:
Peter J. Unitt; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING
|
| The report summarizes the analytic and experimental work performed in the last decade, on rotor and jet downwash impingement for V/STOL aircraft. Different aspects are discussed in detail. Impinging flow fields are described and operational difficulties enumerated. Causes of recirculation are given, underlying mechanisms are suggested and operational problems are discussed. The bibliography contains reports classified according to type and content. T. Strand's solution for inclination of an impinging jet ... |
|
| INVESTIGATION OF TURBOPROP ENGINE CHARACTERISTICS DURING BIRD INGESTION. |
APR 1968 |
|
| Authors:
Donald M. Millar; NATIONAL AVIATION FACILITIES EXPERIMENTAL CENTER ATLANTIC CITY N J
|
| Tests were conducted to determine specific reactions to the ingestion of small birds by a free turbine turboprop engine. Transient and steady-state engine performance was monitored and recorded during and following ingestion sequences. In general, a deterioration in engine performance was indicated upon ingestion of birds or portions thereof. Subsequent engine recovery and stabilization to operating levels below preingestion values were attained in periods from 2 to 4 seconds. Operating ... |
|
| EVALUATION OF THE DUST CLOUD GENERATED BY HELICOPTER ROTOR DOWNWASH. |
MAR 1968 |
35 pages |
| Authors:
Sheridan J. Rodgers; MSA RESEARCH CORP EVANS CITY PA
|
| The dust cloud generated by a tandem-rotor H-21 helicopter was studied as a function of type of soil, hover height and disc loading. A total of 98 tests were made, and three different test sites were used. Samples were collected at 25 locations on the helicopter. Analyses were made for dust content and particle size distribution. Average dust concentrations at the area of highest dust density, i.e., at rotor blade ... |
|
| A PARAMETRIC STUDY OF SWIRL INLET PARTICLE SEPARATORS |
FEB 1968 |
162 pages |
| Authors:
Richard Darling; BOEING VERTOL CO PHILADELPHIA PA
|
| Helicopter turbine engines suffer extensive internal damage from the effects of foreign particles carried into the engine in the intake airstream. Many types of intake filters have already been designed to cope with this problem; however, none is entirely satisfactory. This report describes the investigation of this problem with the goal of producing an inlet particle separator which would be the optimum design for the problem; the resultant design must ... |
|
| TEST OF T-BAR POLYESTER SPRAY SYSTEM FOR PREPARATION OF LANDING SITES. |
FEB 1967 |
|
| Authors:
M. W. Moore; Edward C. Page; AIR FORCE AERO PROPULSION LAB WRIGHT-PATTERSON AFB OH
|
| In frontline areas, landing sites must be constructed rapidly. They must be prepared so that dirt and other foreign objects in the vicinity of the aircraft will not become airborne and obstruct the pilot's view or be ingested by the aircraft engine. In this investigation of site construction, a T-bar spray system for spraying polyester resins was tested to ascertain its efficiency for rapid preparation of sites. The test results ... |
|
| SUPERSONIC TRANSPORT DEVELOPMENT PROGRAM. PHASE III. BOEING MODEL 2707. ENGINE INLET ANTI-ICING SUBSYSTEM SPECIFICATION, |
31 DEC 1966 |
|
| Authors:
J. N. R. Hall; BOEING CO SEATTLE WA SUPERSONIC TRANSPORT DIV
|
| This specification defines the objectives, criteria, and configuration and establishes the requirements for performance, design, test, and qualification of the Inlet Anti-icing Subsystem (hereinafter called IAIS), for the prototype model supersonic transport airplane. Differences between the prototype and the production airplanes are described. |
|
| SUPERSONIC TRANSPORT DEVELOPMENT PROGRAM. PHASE 3 PROPOSAL. BOEING MODEL 2707. VOLUME 2-14. PROPULSION REPORT - PART C. ENGINE EVALUATION |
06 SEP 1966 |
117 pages |
| Authors:
BOEING CO SEATTLE WA SUPERSONIC TRANSPORT DIV
|
| Throughout Phase II-C, as in earlier phases of the SST Program, The Boeing Company has maintained a program of design analysis and performance evaluation, with the coordinated participation of both engine contractors. As a result, the General Electric GE4/J5P powered B-2707 (GE) and the Pratt and Whitney Aircraft JFT17A-21B powered B-2707 (P and WA) airplanes are very competitive in terms of overall airplane performance criteria, and either would make an ... |
|
| GAS TURBINE AND JET ENGINE FUELS |
07 DEC 1961 |
10 pages |
| Authors:
W. L. Streets; PHILLIPS PETROLEUM CO BARTLESVILLE OK
|
|
| DEFINITION OF THE DUST ENVIRONMENT FOR PURPOSES OF GAS TURBINE INGESTION STUDIES. PHASE 1 |
26 OCT 1960 |
61 pages |
| Authors:
Carl A. Hafer; Douglas J. Skinner; SOUTHWEST RESEARCH INST SAN ANTONIO TXDEPT OF AUTOMOTIVE RESEARCH
|
| The purpose of this study is to define the dust environment which a gas turbine engine would experience when operating in a dusty terrain or near equipment causing dust to be airborne. A literature review and supplemental data acquired under various dust conditions were used to establish the severity, duration, and other important factors of dust concentration. Features associated with the dust environment are discussed and the limitations of physical ... |
|
Reports by Keyword(s)
INGESTION(ENGINES)
