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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 217 records · Page 12
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on PaGaFe2 by Materials Project

PaFe2Ga is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Pa is bonded in a distorted body-centered cubic geometry to eight equivalent Fe and six equivalent Ga atoms. All Pa–Fe bond lengths are 2.71 Å. All Pa–Ga bond lengths are 3.13 Å. Fe is bonded in a distorted body-centered cubic geometry to four equivalent Pa and four equivalent Ga atoms. All Fe–Ga bond lengths are 2.71 Å. Ga is bonded in a 8-coordinate geometry to six equivalent Pa and eight equivalent Fe atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on PaGaNi2 by Materials Project

PaNi2Ga is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Pa is bonded in a body-centered cubic geometry to eight equivalent Ni and six equivalent Ga atoms. All Pa–Ni bond lengths are 2.76 Å. All Pa–Ga bond lengths are 3.18 Å. Ni is bonded in a body-centered cubic geometry to four equivalent Pa and four equivalent Ga atoms. All Ni–Ga bond lengths are 2.76 Å. Ga is bonded in a distorted body-centered cubic geometry to six equivalent Pa and eight equivalent Ni atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on PaNi2Sb by Materials Project

PaNi2Sb is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Pa is bonded in a distorted body-centered cubic geometry to eight equivalent Ni and six equivalent Sb atoms. All Pa–Ni bond lengths are 2.83 Å. All Pa–Sb bond lengths are 3.27 Å. Ni is bonded in a body-centered cubic geometry to four equivalent Pa and four equivalent Sb atoms. All Ni–Sb bond lengths are 2.83 Å. Sb is bonded in a distorted body-centered cubic geometry to six equivalent Pa and eight equivalent Ni atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on PaNi2Sn by Materials Project

PaNi2Sn is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Pa is bonded in a distorted body-centered cubic geometry to eight equivalent Ni and six equivalent Sn atoms. All Pa–Ni bond lengths are 2.82 Å. All Pa–Sn bond lengths are 3.25 Å. Ni is bonded in a body-centered cubic geometry to four equivalent Pa and four equivalent Sn atoms. All Ni–Sn bond lengths are 2.82 Å. Sn is bonded in a 8-coordinate geometry to six equivalent Pa and eight equivalent Ni atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on PaPbAu2 by Materials Project

PaAu2Pb is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Pa is bonded in a body-centered cubic geometry to eight equivalent Au and six equivalent Pb atoms. All Pa–Au bond lengths are 3.11 Å. All Pa–Pb bond lengths are 3.59 Å. Au is bonded in a body-centered cubic geometry to four equivalent Pa and four equivalent Pb atoms. All Au–Pb bond lengths are 3.11 Å. Pb is bonded in a distorted body-centered cubic geometry to six equivalent Pa and eight equivalent Au atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on PaNi3 by Materials Project

PaNi3 is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Pa is bonded to twelve Ni atoms to form PaNi12 cuboctahedra that share corners with six equivalent PaNi12 cuboctahedra, corners with twelve NiPa4Ni8 cuboctahedra, edges with eighteen NiPa4Ni8 cuboctahedra, faces with eight equivalent PaNi12 cuboctahedra, and faces with twelve NiPa4Ni8 cuboctahedra. There are six shorter (2.64 Å) and six longer (2.84 Å) Pa–Ni bond lengths. There are three inequivalent Ni sites. In the first Ni site, Ni is bonded to four equivalent Pa and eight Ni atoms to form distorted NiPa4Ni8 cuboctahedra that share corners with four equivalent PaNi12 cuboctahedra, corners with fourteen NiPa4Ni8 cuboctahedra, edges with six equivalent PaNi12 cuboctahedra, edges with twelve NiPa4Ni8 cuboctahedra, faces with four equivalent PaNi12 cuboctahedra, and faces with sixteen NiPa4Ni8 cuboctahedra. There are a spread of Ni–Ni bond distances ranging from 2.52–2.77 Å. In the second Ni site, Ni is bonded to four equivalent Pa and eight Ni atoms to form distorted NiPa4Ni8 cuboctahedra that share corners with four equivalent PaNi12 cuboctahedra, corners with fourteen NiPa4Ni8 cuboctahedra, edges with six equivalent PaNi12 cuboctahedra, edges with twelve NiPa4Ni8 cuboctahedra, faces with four equivalent PaNi12 cuboctahedra, and faces with sixteen NiPa4Ni8 cuboctahedra. There are a spread of Ni–Ni bond distances ranging from 2.52–2.77 Å. In the third Ni site, Ni is bonded to four equivalent Pa and eight Ni atoms to form distorted NiPa4Ni8 cuboctahedra that share corners with four equivalent PaNi12 cuboctahedra, corners with fourteen NiPa4Ni8 cuboctahedra, edges with six equivalent PaNi12 cuboctahedra, edges with twelve NiPa4Ni8 cuboctahedra, faces with four equivalent PaNi12 cuboctahedra, and faces with sixteen NiPa4Ni8 cuboctahedra. Both Ni–Ni bond lengths are 2.77 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on PaCu2Sn by Materials Project

PaCu2Sn is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Pa is bonded in a distorted body-centered cubic geometry to eight equivalent Cu and six equivalent Sn atoms. All Pa–Cu bond lengths are 2.90 Å. All Pa–Sn bond lengths are 3.34 Å. Cu is bonded in a body-centered cubic geometry to four equivalent Pa and four equivalent Sn atoms. All Cu–Sn bond lengths are 2.90 Å. Sn is bonded in a 8-coordinate geometry to six equivalent Pa and eight equivalent Cu atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Pa2SbTe by Materials Project

Pa2SbTe is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Pa is bonded in a body-centered cubic geometry to four equivalent Sb and four equivalent Te atoms. All Pa–Sb bond lengths are 3.22 Å. All Pa–Te bond lengths are 3.22 Å. Sb is bonded in a body-centered cubic geometry to eight equivalent Pa atoms. Te is bonded in a body-centered cubic geometry to eight equivalent Pa atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on PaNi2Ge by Materials Project

PaNi2Ge is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Pa is bonded in a distorted body-centered cubic geometry to eight equivalent Ni and six equivalent Ge atoms. All Pa–Ni bond lengths are 2.76 Å. All Pa–Ge bond lengths are 3.19 Å. Ni is bonded in a body-centered cubic geometry to four equivalent Pa and four equivalent Ge atoms. All Ni–Ge bond lengths are 2.76 Å. Ge is bonded in a distorted body-centered cubic geometry to six equivalent Pa and eight equivalent Ni atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Mg3Pa by Materials Project

Mg3Pa is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. there are two inequivalent Mg sites. In the first Mg site, Mg is bonded in a body-centered cubic geometry to four equivalent Mg and four equivalent Pa atoms. All Mg–Mg bond lengths are 3.15 Å. All Mg–Pa bond lengths are 3.15 Å. In the second Mg site, Mg is bonded in a 8-coordinate geometry to eight equivalent Mg and six equivalent Pa atoms. All Mg–Pa bond lengths are 3.63 Å. Pa is bonded in a distorted body-centered cubic geometry to fourteen Mg atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on PaMn2Ga by Materials Project

PaMn2Ga is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Pa is bonded in a distorted body-centered cubic geometry to eight equivalent Mn and six equivalent Ga atoms. All Pa–Mn bond lengths are 2.74 Å. All Pa–Ga bond lengths are 3.16 Å. Mn is bonded in a body-centered cubic geometry to four equivalent Pa and four equivalent Ga atoms. All Mn–Ga bond lengths are 2.74 Å. Ga is bonded in a distorted body-centered cubic geometry to six equivalent Pa and eight equivalent Mn atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on PaTe2Pd by Materials Project

PaPdTe2 is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Pa is bonded in a distorted body-centered cubic geometry to six equivalent Pd and eight equivalent Te atoms. All Pa–Pd bond lengths are 3.65 Å. All Pa–Te bond lengths are 3.16 Å. Pd is bonded in a 8-coordinate geometry to six equivalent Pa and eight equivalent Te atoms. All Pd–Te bond lengths are 3.16 Å. Te is bonded in a body-centered cubic geometry to four equivalent Pa and four equivalent Pd atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Pa2BiTe by Materials Project

Pa2BiTe is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Pa is bonded in a body-centered cubic geometry to four equivalent Bi and four equivalent Te atoms. All Pa–Bi bond lengths are 3.26 Å. All Pa–Te bond lengths are 3.26 Å. Bi is bonded in a body-centered cubic geometry to eight equivalent Pa atoms. Te is bonded in a body-centered cubic geometry to eight equivalent Pa atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sr3Pa by Materials Project

Sr3Pa is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. there are two inequivalent Sr sites. In the first Sr site, Sr is bonded to four equivalent Sr and four equivalent Pa atoms to form a mixture of distorted edge, face, and corner-sharing SrSr4Pa4 tetrahedra. All Sr–Sr bond lengths are 3.88 Å. All Sr–Pa bond lengths are 3.88 Å. In the second Sr site, Sr is bonded in a 8-coordinate geometry to eight equivalent Sr and six equivalent Pa atoms. All Sr–Pa bond lengths are 4.48 Å. Pa is bonded in a distorted body-centered cubic geometry to fourteen Sr atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Mg3Pa by Materials Project

Mg3Pa is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. there are two inequivalent Mg sites. In the first Mg site, Mg is bonded to eight Mg and four equivalent Pa atoms to form distorted MgMg8Pa4 cuboctahedra that share corners with four equivalent PaMg12 cuboctahedra, corners with fourteen MgMg8Pa4 cuboctahedra, edges with six equivalent PaMg12 cuboctahedra, edges with twelve MgMg8Pa4 cuboctahedra, faces with four equivalent PaMg12 cuboctahedra, and faces with sixteen MgMg8Pa4 cuboctahedra. There are a spread of Mg–Mg bond distances ranging from 3.19–3.37 Å. There are two shorter (3.23 Å) and two longer (3.31 Å) Mg–Pa bond lengths. In the second Mg site, Mg is bonded to eight equivalent Mg and four equivalent Pa atoms to form distorted MgMg8Pa4 cuboctahedra that share corners with four equivalent PaMg12 cuboctahedra, corners with fourteen MgMg8Pa4 cuboctahedra, edges with six equivalent PaMg12 cuboctahedra, edges with twelve equivalent MgMg8Pa4 cuboctahedra, faces with four equivalent PaMg12 cuboctahedra, and faces with sixteen MgMg8Pa4 cuboctahedra. There are two shorter (3.23 Å) and two longer (3.31 Å) Mg–Pa bond lengths. Pa is bonded to twelve Mg atoms to form PaMg12 cuboctahedra that share corners with six equivalent PaMg12 cuboctahedra, corners with twelve MgMg8Pa4 cuboctahedra, edges with eighteen MgMg8Pa4 cuboctahedra, faces with eight equivalent PaMg12 cuboctahedra, and faces with twelve MgMg8Pa4 cuboctahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ba3Pa by Materials Project

Ba3Pa is Uranium Silicide-like structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are two inequivalent Ba sites. In the first Ba site, Ba is bonded to eight Ba and four equivalent Pa atoms to form distorted BaBa8Pa4 cuboctahedra that share corners with twelve equivalent BaBa8Pa4 cuboctahedra, edges with eight equivalent PaBa12 cuboctahedra, edges with sixteen BaBa8Pa4 cuboctahedra, faces with four equivalent PaBa12 cuboctahedra, and faces with fourteen BaBa8Pa4 cuboctahedra. All Ba–Ba bond lengths are 4.08 Å. All Ba–Pa bond lengths are 4.08 Å. In the second Ba site, Ba is bonded to eight equivalent Ba and four equivalent Pa atoms to form distorted BaBa8Pa4 cuboctahedra that share corners with four equivalent BaBa8Pa4 cuboctahedra, corners with eight equivalent PaBa12 cuboctahedra, edges with twenty-four BaBa8Pa4 cuboctahedra, faces with six equivalent PaBa12 cuboctahedra, and faces with twelve BaBa8Pa4 cuboctahedra. All Ba–Pa bond lengths are 4.08 Å. Pa is bonded to twelve Ba atoms to form PaBa12 cuboctahedra that share corners with four equivalent PaBa12 cuboctahedra, corners with eight equivalent BaBa8Pa4 cuboctahedra, edges with eight equivalent PaBa12 cuboctahedra, edges with sixteen equivalent BaBa8Pa4 cuboctahedra, faces with four equivalent PaBa12 cuboctahedra, and faces with fourteen BaBa8Pa4 cuboctahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2023

Peanut allergy burden survey: Factors associated with health‐related quality of life in adolescents

Abstract Background Patients with peanut allergy (PA) experience significant burden of illness, which impacts health‐related quality of life (HRQoL), particularly in adolescence. There is a paucity of research evaluating drivers of HRQoL scores. Methods A prospective, online survey of adolescents with self‐reported, provider‐diagnosed PA completed from November 2018 to January 2019 was used to explore drivers of the real‐world impact of PA on HRQoL using the Pediatric Quality of Life Inventory 4.0 (PedsQL) and other measures. Univariate and multivariate analyses were used to identify potential factors associated with PedsQL scores and to understand the level of association. Results A total of 102 adolescents were included. The final model included 10 variables: race, reported strict peanut avoidance, satisfaction with prophylaxis, moderate‐to‐severe reaction within the past 12 months, touching peanut as cause of most severe reaction, fear of reaction, age, gender, comorbidities, and daily life limitations. In total, three items were shown to be strong predictors of the PedsQL total score including cause of severe reaction was touching peanut (yes), level of agreement with avoiding peanut (completely agree), and satisfaction with prophylaxis (not very much/not at all). Conclusions There is substantial heterogeneity in the impact of the burden of PA on PedsQL scores across patients. This indicates the importance of shared and individualized decision making for PA management to optimize outcomes and improve HRQoL.

McCann, William A.↗
DOE OSTI2025

Suppression of Chorismate Mutase 1 in Hybrid Poplar to Investigate Potential Redundancy in the Supply of Lignin Precursors

Chorismate is an important branchpoint metabolite in the biosynthesis of lignin and a wide array of metabolites in plants. Chorismate mutase (CM), the enzyme responsible for transforming chorismate into prephenate, is a key regulator of metabolic flux towards the synthesis of aromatic amino acids and onwards to lignin. We examined three CM genes in hybrid poplar (Populus alba × grandidentata; P39, abbreviated as Pa×g) and used RNA interference (RNAi) to suppress the expression of Pa×gCM1, the most highly expressed isoform found in xylem tissue. Although this strategy was successful in disrupting Pa×gCM1 transcripts, there was also an unanticipated increase in lignin content, a shift towards guaiacyl lignin units, and more xylem vessels with smaller lumen areas, at least in the most severely affected transgenic line. This was accompanied by compensatory expression of the other two CM isoforms, Pa×gCM2 and Pa×gCM3, as well as widespread changes in gene expression and metabolism. This study investigates potential redundancy within the CM gene family in the developing xylem of poplar and highlights the pivotal role of chorismate in plant metabolism, development, and physiology.

59 BASIC BIOLOGICAL SCIENCES↗