Scattering of 42 MeV /6.7-pJ/ alpha particles from even isotopes of cadmium. Supplement 1 - Absolute cross sections

Absolute cross sections for scattering of 42 MeV alpha particles from even isotopes of cadmiu

Elastic and inelastic scattering of 42-MeV alpha particles from even tellurium isotopes

Angular distributions of elastic and inelastic scattering of 42-MeV alpha particles measured for even tellurium isotope

SAGE 1 data user's guide

A guide for using the data products from the Stratospheric Aerosol and Gas Experiment 1 (SAGE 1) for scientific investigations of stratospheric chemistry related to aerosol, ozone, nitrogen dioxide, dynamics, and climate change is presented. A detailed description of the aerosol profile tape, the ozone profile tape, and the nitrogen dioxide profile tape is included. These tapes are the SAGE 1 data products containing aerosol extinction data and ozone and nitrogen dioxide concentration data for use in the different scientific investigations. Brief descriptions of the instrument operation, data collection, processing, and validation, and some of the scientific analyses that were conducted are also included

Fuel efficiency through new airframe technology

In its Aircraft Energy Efficiency Program, NASA has expended approximately 200 million dollars toward development and application of advanced airframe technologies to United States's commercial transports. United States manufacturers have already been given a significant boost toward early application of advanced composite materials to control surface and empennage structures and toward selected applications of active controls and advanced aerodynamic concepts. In addition, significant progress in definition and development of innovative, but realistic systems for laminar flow control over the wings of future transports has already been made

Gamma ray angular correlations following inelastic scattering of 42-MeV alpha particles from magnesium 24

Angular correlation between inelastically scattered alpha particles and gamma rays emitted in subsequent nuclear decay of magnesium 2

Investigation of warm fog properties and fog modification concepts

Warm fog seeding to determine potential of various sized and unsized hygroscopic chemicals for fog dissipatio

Delivery performance of conventional aircraft by terminal-area, time-based air traffic control: A real-time simulation evaluation

A description and results are presented of a study to measure the performance and reaction of airline flight crews, in a full workload DC-9 cockpit, flying in a real-time simulation of an air traffic control (ATC) concept called Traffic Intelligence for the Management of Efficient Runway-scheduling (TIMER). Experimental objectives were to verify earlier fast-time TIMER time-delivery precision results and obtain data for the validation or refinement of existing computer models of pilot/airborne performance. Experimental data indicated a runway threshold, interarrival-time-error standard deviation in the range of 10.4 to 14.1 seconds. Other real-time system performance parameters measured include approach speeds, response time to controller turn instructions, bank angles employed, and ATC controller message delivery-time errors

The Case of the Missing Gates: Complexity of Jackiw-Teitelboim Gravity

The Jackiw-Teitelboim (JT) model arises from the dimensional reduction of charged black holes. Motivated by the holographic complexity conjecture, we calculate the late-time rate of change of action of a Wheeler-DeWitt patch in the JT theory. Surprisingly, the rate vanishes. This is puzzling because it contradicts both holographic expectations for the rate of complexification and also action calculations for charged black holes. We trace the discrepancy to an improper treatment of boundary terms when naively doing the dimensional reduction. Once the boundary term is corrected, we find exact agreement with expectations. We comment on the general lessons that this might hold for holographic complexity and beyond.Comment: 31 pages, 5 figure

Geology and Ground-Water Resources of Southern Ellis County and Parts of Trego and Rush Counties, Kansas

This report describes the geography, geology, and ground-water resources of an area about 4 to 13 miles wide and 37 miles long, containing approximately 365 square miles. The climate is subhumid, the mean annual precipitation is 22.90 inches, and the mean annual temperature is 54.7° F. Agriculture is the chief occupation in the area; wheat is the chief crop, but sorghum and alfalfa are grown along the principal streams where the water table is near the surface. Minerals produced in the area are oil, limestone, sand and gravel, silt and clay, and volcanic ash. The exposed rocks range in age from Late Cretaceous to Recent. The Pleistocene alluvial deposits, which range in age from Nebraskan to Recent, are the principal aquifers in the area. The Dakota Formation (Cretaceous) supplies water for rural domestic and stock use in parts of the area. The shape and slope of the water table are illustrated by a map showing contours of the water table and depth to the water table in wells. Ground water in the Pleistocene alluvial deposits moves downstream and toward the principal streams. Ground water is recharged mainly from local precipitation; ground water is discharged chiefly by seepage into streams and by transpiration by plants. In most of the area the ground water is suitable for domestic, stock, and municipal use. The water ranges from soft to hard and from moderately to strongly mineralized. Water in the Dakota Formation generally is of the sodium chloride type, has a large amount of dissolved solids, and is moderately hard. Most water from the Pleistocene deposits is of the calcium bicarbonate type and contains moderate to large amounts of dissolved solids. Water from most of the aquifers in the area is rated good to permissible for irrigation. The hydrologic and geologic field data upon which this report is based include records of 141 wells, chemical analyses of water from 49 domestic and stock wells and from 5 municipal supplies, and logs of 50 test holes, 1 oil well, and 80 jetted test holes