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At least 199 records · Page 11

Publication of LLNL Genomics Data to ESGF: a Technical Report for DREAM Project

We present the process used to set up several example genomic data sets within an ESGF framework. The process begins with designing a project, staging the data, and handling the necessary configuration. We describe the publication process used to ingest the datasets, in essence, all required metadata. Finally, we describe the data web service that we introduce in the DREAM project which makes these datasets available for download or exploration.

59 BASIC BIOLOGICAL SCIENCES↗

LLNL Evaluation of 44th OPCW Environmental Proficiency Test

The goal of the test was to analyze all samples for the presence of any Scheduled Chemicals and/or their precursors/degradation/reaction products and chemicals listed in the list of “Additional Non-Scheduled Reportable Chemicals”. According to the test scenario, the samples were collected from a facility described as an industrial research laboratory for developing new chemical compounds. Each participating laboratory received a set of three aqueous samples (described as “Decon Waste”) and a set of three soil samples (described as collected in an area of suspected chemical contamination, near a chemical storage facility). Each set of samples contained one “test sample”, one “control sample”, and one “blank sample” without indication of their identities. The test sample contained an unknown number of spiking chemicals, each present at a concentration of 1 ppm or greater. The control sample contained an unknown number of spiking chemicals, each present at a concentration of 5 ppm or greater. The blank sample contained no chemicals relevant to the aim of the test. However, for this test, the blank samples did contain irrelevant chemicals in addition to the sample matrix.

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CH↗

LLNL SFA OBER–SBR FY19 Program Management and Performance Report: Biogeochemistry of Actinides

Over 2,600 metric tons of plutonium (Pu) are estimated to have been produced worldwide, with approximately 70-90 metric tons added to this inventory each year from spent nuclear fuel. A subset of this Pu inventory has been released into the environment as a result of nuclear weapons production, weapons testing, poor waste management practices, and nuclear accidents. The migration of low levels of Pu released in the environment has been documented on the scale of kilometers. Due to its long half-life, toxicity, and its ability to migrate, Pu represents a potentially significant risk to humankind and the environment. Their fate depends on the nature of the release, the biogeochemical processes controlling mobilization, and the eventual exposure pathways. Understanding their behavior in the environment is critical for managing environmental contamination and planning for the safe, long-term isolation of nuclear waste from the biosphere.

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS↗

LLNL-Stanford collaboration (subcontract B612106) (Final Report)

Chlamydomonas reinhardtii CC-1690 wild type mt+ [Sager 21 gr] and the bacterial strain P2b were obtained from Oana Marcu (NASA Ames Research Center/SETI Institute, USA). Axenic C. reinhardtii stock cultures were cultivated on Tris-minimal medium agar plates (Gorman and Levine, 1965) containing 15 g/L agar (Research Products International Corp, USA). Algal cultures were cultivated at 25°C and light intensities between 80-100 µmol photons m -2 s -1 with a light:dark cycle of 16:8 hours in either a New Brunswick Scientific Excella E24 incubator shaker (Eppendorf, USA), equipped with the AIBC High Power ChloroBa120 LED Grow Light (AIB LED, USA) or in a SANYO Versatile Environmental Test Chamber MLR-351 (SANYO Electric Co., Ltd., Japan). Liquid cultures were agitated in the New Brunswick incubator shaker at 150 rpm or in the SANYO Test Chamber by using the VWR 3500 orbital shaker at speed level 5 (VWR, USA). Strain P2b stock cultures were grown on agar plates containing Luria Broth medium (Miller 1972) and 15g/L agar at 30°C for 3 days and stored at 4°C.

09 BIOMASS FUELS↗

5th Annual LLNL Deterrence Workshop -- Multi-Domain Strategic Competition: Rewards and Risks

A fundamental uncertainty in the U.S. approach to strategic competition is about the long-term goals. It remains unclear to what end the U.S. is competing. One answer is that the U.S. aims to preserve and expand its influence to secure economic and political interests while safeguarding a global order that serves these interests. The competition, thus, is about using political, economic, and military instruments to achieve limited national aims by changing Russia’s and China’s behavior. Yet, if this is the U.S. goal, it has not been clearly articulated. The NSS and the NDS provide over a dozen different answers about the goals of strategic competition. In addition, senior administration officials have set out their own ideas of what the goals of the competition should be. The question of long-term goals is especially sharp at the strategic level of war. It is unclear whether the United States seeks “over-matching” capabilities for “strategic dominance” in cyber space, outer space, missile defense, conventional strike, and nuclear deterrence, or if the U.S. goals are more limited.

98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL P↗

CO2 injection with fracturing in geomechanically protected caprock: Task 6 of LLNL's Research Activities to Support DOE's Carbon Storage Program (FWP-FEW0191) (Final Technical Report)

Conventional principles of the design and operation of geologic carbon storage (GCS) require injecting CO 2 below the caprock fracturing pressure to ensure the integrity of the storage complex. In non-ideal storage reservoirs with relatively low permeability, modest injection rates can lead to pressure buildup and hydraulic fracturing of the reservoir and caprock. While the GCS community has generally viewed hydraulic fractures as a key risk to storage integrity, the actual behavior of a caprock hydraulic fracture, particularly from a geomechanical perspective, has not been thoroughly studied. The prevailing method of treating a hydraulic fracture as a high-permeability wing of the storage reservoir might have resulted in erroneous understanding of caprock hydraulic fracture behavior. Comprehensive analyses of monitoring data from the In Salah project suggested that one or more hydraulic fractures may have been created in the reservoir and lower caprock system during injection operations, but did not cause detectable leakage of CO 2 out of the storage complex. This observation coincides with a well-known phenomenon in the oil and gas industry: sedimentary rock formations have many inherent features that naturally protect the formations from unbounded vertical growth of hydraulic fractures.

58 GEOSCIENCES↗

Final Report from Cal Poly on LLNL sponsored project

This final report consists of updates the project for the entire project period. The project started in 2018, ends on Sep 30th, 2020. Topics included are: Powder removal; Tensile Properties Test; Powder Flowability; and Thin walled Structure. Reports are included for each area.

36 MATERIALS SCIENCE↗