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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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At least 37 records · Page 2
All sourcesNASA NTRSDOE OSTI
DOE OSTI2017

Folsom Mammoth Hunters? The Terminal Pleistocene Assemblage From Owl Cave (10BV30), Wasden Site, Idaho

The 1960s and 1970s excavations at Owl Cave (10BV30) recovered mammoth bone and Folsom-like points from the same strata, suggesting evidence for a post-Clovis mammoth kill. However, a synthesis of the excavation data was never published, and the locality has since been purged from the roster of sites with human/extinct megafauna associations. In this paper, we present dates on bone from the oldest stratum, review provenience data, conduct a bone-surface modification study, and present the results of a protein-residue analysis. Our study fails to make the case for mammoth hunting by Folsom peoples. Although two of the point fragments tested positive for horse or elephant protein, recent AMS dates indicate that all of the mammoth remains predate Folsom, and horse remains are absent from the Owl Cave collection. Further, no unambiguously cultural surface modifications were identified on any of the mammoth remains. Given the available data, the Owl Cave deposits are most parsimoniously read as containing a Folsom-age occupation in a buried context, the first of its kind in the desert West, but one nonetheless part of a palimpsest of terminal Pleistocene materials.

99 GENERAL AND MISCELLANEOUS↗
DOE OSTI2021

Hands-on with OWL: the Oak–Ridge Wang–Landau Monte Carlo software suite

The Oak–Ridge Wang–Landau (OWL) package is an open-source scientific software specialized for large-scale, Monte Carlo simulations for the study of materials properties at finite temperature. In this paper, we discuss the main features and capabilities of OWL, followed by detailed descriptions of building and running the code. The readers will be guided through the usage and functionality of the code with a few hands-on examples. This paper is based on a tutorial on OWL given at the 32nd Center for Simulational Physics Workshop on Recent Developments in Computer Simulation Studies in Condensed Matter Physics.

Li, Ying Wai↗
DOE OSTI2016

The On-line Waste Library (OWL): Usage and Inventory Status Report

The Waste Form Disposal Options Evaluation Report (SNL 2014) evaluated disposal of both Commercial Spent Nuclear Fuel (CSNF) and DOE-managed HLW and Spent Nuclear Fuel (DHLW and DSNF) in the variety of disposal concepts being evaluated within the Used Fuel Disposition Campaign. That work covered a comprehensive inventory and a wide range of disposal concepts. The primary goal of this work is to evaluate the information needs for analyzing disposal solely of a subset of those wastes in a Defense Repository (DRep; i.e., those wastes that are either defense related, or managed by DOE but are not commercial in origin). A potential DRep also appears to be safe in the range of geologic mined repository concepts, but may have different concepts and features because of the very different inventory of waste that would be included. The focus of this status report is to cover the progress made in FY16 toward: (1) developing a preliminary DRep included inventory for engineering/design analyses; (2) assessing the major differences of this included inventory relative to that in other analyzed repository systems and the potential impacts to disposal concepts; (3) designing and developing an on-line waste library (OWL) to manage the information of all those wastes and their waste forms (including CSNF if needed); and (4) constraining post-closure waste form degradation performance for safety assessments of a DRep. In addition, some continuing work is reported on identifying potential candidate waste types/forms to be added to the full list from SNL (2014 – see Table C-1) which also may be added to the OWL in the future. The status for each of these aspects is reported herein.

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE W↗
DOE OSTI2019

Noise Study for the Mexican Spotted Owl Sandia-Mortandad Area of Environmental Interest

One of the primary threats to Mexican Spotted Owls at the Los Alamos National Laboratory (LANL) is noise disturbance during the nesting season from vehicular traffic, construction activities, and explosives testing. The other primary threat is from habitat loss or alteration. Sigma Mesa is located between Sandia Canyon to the north and Mortandad Canyon to the south, and is within Technical Area 60. Since Sigma Mesa is within an Area of Environmental Interest (AEI) for the Mexican Spotted Owl, any increase in operational activities requires evaluation under the LANL Habitat Management Plan. This study was completed to support a biological assessment to analyze the effects of the installation of a new asphalt batch plant and additional vehicular traffic on Sigma Mesa. We conducted noise monitoring using calibrated noise level meters at various locations around the project site. This included daytime, nighttime, and weekend measurements. The noise cycle levels around Sigma Mesa vary throughout the week and by measurement location. In developed areas, current noise levels were significantly higher during the day due to daytime operations. In undeveloped areas, noise levels were significantly higher at night due to natural noise primarily from insects. Weekend noise was significantly lower in developed areas and was not significantly different in undeveloped areas. Weekday operations are reduced during the weekend resulting in less noise. Since most of the operational noise is attenuated during the week, noise levels in undeveloped areas are not significantly different during the weekend. In comparison to a noise study performed in 2005 in the same general area, current noise levels have increased in developed areas around Sigma Mesa, but have not increased in undeveloped areas that are lower in elevation. This is due to natural noise attenuation over distance and elevation gradients.

54 ENVIRONMENTAL SCIENCES↗
DOE OSTI2019

Noise Study for the Mexican Spotted Owl Sandia-Mortandad Area of Environmental Interest

One of the primary threats to Mexican Spotted Owls at the Los Alamos National Laboratory (LANL) is noise disturbance during the nesting season from vehicular traffic, construction activities, and explosives testing. The other primary threat is from habitat loss or alteration. Sigma Mesa is located between Sandia Canyon to the north and Mortandad Canyon to the south, and is within Technical Area 60. Since Sigma Mesa is within an Area of Environmental Interest (AEI) for the Mexican Spotted Owl, any increase in operational activities requires evaluation under the LANL Habitat Management Plan. This study was completed to support a biological assessment to analyze the effects of the installation of a new asphalt batch plant and additional vehicular traffic on Sigma Mesa. We conducted noise monitoring using calibrated noise level meters at various locations around the project site. This included daytime, nighttime, and weekend measurements. The noise cycle levels around Sigma Mesa vary throughout the week and by measurement location. In developed areas, current noise levels were significantly higher during the day due to daytime operations. In undeveloped areas, noise levels were significantly higher at night due to natural noise primarily from insects. Weekend noise was significantly lower in developed areas and was not significantly different in undeveloped areas. Weekday operations are reduced during the weekend resulting in less noise. Since most of the operational noise is attenuated during the week, noise levels in undeveloped areas are not significantly different during the weekend. In comparison to a noise study performed in 2005 in the same general area, current noise levels have increased in developed areas around Sigma Mesa, but have not increased in undeveloped areas that are lower in elevation. This is due to natural noise attenuation over distance and elevation gradients.

54 ENVIRONMENTAL SCIENCES↗
DOE OSTI2017

Update to Waste Form Performance Constraints and OWL Status and Inventory Content. Draft

This report provides (1) an updated set of inputs (Sections 1 through 4) on various additional waste forms (WF) for the generic Defense Waste Repository (DWR) inventory represented in the generic disposal system analyses (GDSA); (2) summaries of evaluations initiated to refine particular characteristics of particular WF for future use (Section 5); and (3) status updates (Section 6) for the Online Waste Library (OWL) inventory content, data entry checking process, and external OWL BETA testing initiated in fiscal year 2017. As such, this report represents completion of both deliverables M3SF-17SNO10501022 (SFWD-SFWST-2017-000047 — this actual report) and M4SF-17SN010501012 (SFWD-SFWST-2017- 000112 — to be completed by reference to the first milestone report in the PICSNE system).

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS↗
DOE OSTI2023

Annual Status Update for OWL

This report represents completion of milestone deliverable M2SF-24SN010309082 Annual Status Update for OWL due on November 30, 2023. It contains the status of fiscal year 2023 (FY2023) updates for the Online Waste Library (OWL).

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE W↗
DOE OSTI2022

Annual status update for OWL

This report represents completion of milestone deliverable M2SF-23SN010309082 Annual Status Update for OWL due on November 30, 2022. It provides the status of fiscal year 2022 (FY2022) updates for the Online Waste Library (OWL).

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE W↗
DOE OSTI2024

Burrowing Owl Survey Report for Sandia National Laboratories: 2024

The Burrowing Owl Survey Report for Sandia National Laboratories: 2024 provides data and analysis on occupancy surveys that were conducted during the 2024 survey season. The surveys were conducted in partnership with Kirtland Air Force Base’s Natural Resource Program to maintain and expand on the long-term dataset on burrowing owls on base.

54 ENVIRONMENTAL SCIENCES↗
NASA NTRS1995

Old-growth and mature forests near spotted owl nests in western Oregon

We investigated how the amount of old-growth and mature forest influences the selection of nest sites by northern spotted owls (Strix occidentalis caurina) in the Central Cascade Mountains of Oregon. We used 7 different plot sizes to compare the proportion of mature and old-growth forest between 30 nest sites and 30 random sites. The proportion of old-growth and mature forest was significantly greater at nests sites than at random sites for all plot sizes (P less than or equal to 0.01). Thus, management of the spotted owl might require setting the percentage of old-growth and mature forest retained from harvesting at least 1 standard deviation above the mean for the 30 nest sites we examined.

Ripple, William J.↗
DOE OSTI2016

What Do Owls, Salamanders, Flycatchers and Cuckoos Have In Common?

This is an article from the Los Alamos Living magazine. Los Alamos National Laboratory sits on a beautiful and unique landscape that provides important protected habitat to many species, including a few that are federally-listed as threatened or endangered. These species are the Jemez Mountains Salamander, the Mexican Spotted Owl, the Southwestern Willow Flycatcher, the Yellow-billed Cuckoo, and the New Mexico Meadow Jumping Mouse. Part of the job of the Laboratory's wildlife biologists is to survey for these species each year and determine what actions need to be taken if they are found.

59 BASIC BIOLOGICAL SCIENCES↗
DOE OSTI2024

Convergence of Emerging Technologies - OWL Test Results

The OWL GroundAware GA1360 2D radar system with advertised capability of advanced digital beam-forming radar technology, classification intelligence, reconfigurability, and easy integration with other security systems to bring 360° of real-time, all-weather situational awareness for the physical security of perimeters and other sensitive areas for critical infrastructure.

47 OTHER INSTRUMENTATION↗
NASA NTRS1999

Current Status of Airwatch-OWL Optics

The current status of the OWL (Obstacle Warning Ladar) Optical Design is discussed, and the results of a trade-off study are presented.

Lamb, David J.↗
NASA NTRS2004

Observing the Ultrahigh Energy Universe with OWL Eyes

The goal of the Orbiting Wide-field Light-collectors (0WL) mission is to study the origin and physics of the highest energy particles known in nature, the ultra- high energy cosmic rays (UHECRs). The OWL mission consists of telescopes with UV sensitive cameras on two satellites operating in tandem to view in stereo the development of the giant particle showers induced in the Earth s atmosphere by UHECRs. This paper discusses the characteristics of the 0WL mission.

Stecker, F. W.↗
DOE OSTI2021

Western Burrowing Owl Radio-tracking Study

Summary of western burrowing owl satellite-tracking study on the NNSS for the Fall issue of the Nevada Chapter of The Wildlife Society Newsletter.

60 APPLIED LIFE SCIENCES↗