SEARCH · Engineering Papers
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.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Case study of Urbane Homes, who worked with Building America to build market rate homes with HERS scores of 57 to 62. Despite a down market they’ve sold every home within 3 weeks of listing, without any advertising.
Studying excited nucleon structure via exclusive KY electroproduction will be an important tool for exploring the non-perturbative strong interaction. Electrocouplings for low-lying N? states (<1.7 GeV) have been determined from analyses of CLAS ?N and ??N data. This work made clear that consistency of independent analyses of exclusive channels with different couplings and non-resonant contributions is essential to have confidence in the extracted results. In terms of hadronic coupling, most high-lying N? states preferentially decay through the ??N channel instead of ?N. Data from the KY channels will therefore be critical to provide an independent analysis to compare the extracted electrocouplings for the high-lying N? states against those determined from the ??N channel from an already approved CLAS12 12-GeV experiment. A new experiment that will focus on N??KY decays using CLAS12 at JLab will be discussed that will measure differential cross sections to be used as input to extract the ?vNN? transition form factors for the most prominent N? states in the range of invariant energy W from 1.6 to 3~GeV in the virtually unexplored domain of momentum transfers Q2 up to 12~GeV2.
Studying excited nucleon structure via exclusive KY electroproduction will be an important tool for exploring the non-perturbative strong interaction. Electrocouplings for low-lying N? states (<1.7 GeV) have been determined from analyses of CLAS ?N and ??N data. This work made clear that consistency of independent analyses of exclusive channels with different couplings and non-resonant contributions is essential to have confidence in the extracted results. In terms of hadronic coupling, most high-lying N? states preferentially decay through the ??N channel instead of ?N. Data from the KY channels will therefore be critical to provide an independent analysis to compare the extracted electrocouplings for the high-lying N? states against those determined from the ??N channel from an already approved CLAS12 12-GeV experiment. A new experiment that will focus on N??KY decays using CLAS12 at JLab will be discussed that will measure differential cross sections to be used as input to extract the ?vNN? transition form factors for the most prominent N? states in the range of invariant energy W from 1.6 to 3~GeV in the virtually unexplored domain of momentum transfers Q2 up to 12~GeV2.
KY(CO)8 crystallizes in the tetragonal P4/mcc space group. The structure is two-dimensional and consists of two KY(CO)8 sheets oriented in the (0, 0, 1) direction. K1+ is bonded in a 8-coordinate geometry to eight equivalent O2- atoms. All K–O bond lengths are 2.92 Å. Y3+ is bonded in a 8-coordinate geometry to eight equivalent O2- atoms. All Y–O bond lengths are 2.39 Å. C+1.50+ is bonded in a single-bond geometry to one O2- atom. The C–O bond length is 1.26 Å. O2- is bonded in a 1-coordinate geometry to one K1+, one Y3+, and one C+1.50+ atom.
KY(PO3)4 crystallizes in the monoclinic P2_1 space group. The structure is three-dimensional. K1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of K–O bond distances ranging from 2.78–3.21 Å. Y3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Y–O bond distances ranging from 2.30–2.48 Å. There are four inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form corner-sharing PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.50–1.62 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form corner-sharing PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.50–1.61 Å. In the third P5+ site, P5+ is bonded to four O2- atoms to form corner-sharing PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.50–1.62 Å. In the fourth P5+ site, P5+ is bonded to four O2- atoms to form corner-sharing PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.50–1.62 Å. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one K1+, one Y3+, and one P5+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to one K1+, one Y3+, and one P5+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one K1+, one Y3+, and one P5+ atom. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to one K1+, one Y3+, and one P5+ atom. In the fifth O2- site, O2- is bonded in a bent 120 degrees geometry to two P5+ atoms. In the sixth O2- site, O2- is bonded in a 1-coordinate geometry to one K1+, one Y3+, and one P5+ atom. In the seventh O2- site, O2- is bonded in a 1-coordinate geometry to one K1+, one Y3+, and one P5+ atom. In the eighth O2- site, O2- is bonded in a bent 150 degrees geometry to two P5+ atoms. In the ninth O2- site, O2- is bonded in a distorted single-bond geometry to one K1+, one Y3+, and one P5+ atom. In the tenth O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one Y3+, and one P5+ atom. In the eleventh O2- site, O2- is bonded in a bent 150 degrees geometry to two P5+ atoms. In the twelfth O2- site, O2- is bonded in a bent 120 degrees geometry to two P5+ atoms.
KY(MoO4)2 crystallizes in the orthorhombic Pbcn space group. The structure is three-dimensional. K1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of K–O bond distances ranging from 2.77–2.91 Å. Y3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Y–O bond distances ranging from 2.31–2.52 Å. Mo6+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Mo–O bond distances ranging from 1.75–1.87 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Y3+ and one Mo6+ atom. In the second O2- site, O2- is bonded in a 3-coordinate geometry to one K1+, one Y3+, and one Mo6+ atom. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent K1+ and one Mo6+ atom. In the fourth O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Y3+ and one Mo6+ atom.
KY(WO4)2 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. K1+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of K–O bond distances ranging from 2.86–3.07 Å. Y3+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Y–O bond distances ranging from 2.28–2.31 Å. W6+ is bonded to six O2- atoms to form a mixture of corner and edge-sharing WO6 octahedra. The corner-sharing octahedral tilt angles are 40°. There are a spread of W–O bond distances ranging from 1.83–2.12 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent K1+ and two equivalent W6+ atoms. In the second O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one Y3+, and one W6+ atom. In the third O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one Y3+, and one W6+ atom. In the fourth O2- site, O2- is bonded in a 4-coordinate geometry to one K1+, one Y3+, and two equivalent W6+ atoms.
KY(PO3)4 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. K1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of K–O bond distances ranging from 2.77–2.98 Å. Y3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Y–O bond distances ranging from 2.35–2.43 Å. There are two inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form corner-sharing PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.49–1.62 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form corner-sharing PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.50–1.63 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one K1+ and two P5+ atoms. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two P5+ atoms. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one K1+, one Y3+, and one P5+ atom. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to one Y3+ and one P5+ atom. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to one Y3+ and one P5+ atom. In the sixth O2- site, O2- is bonded in a 1-coordinate geometry to one K1+, one Y3+, and one P5+ atom.
KY(PSe3)2 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is three-dimensional. K1+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are a spread of K–Se bond distances ranging from 3.46–3.94 Å. Y3+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are a spread of Y–Se bond distances ranging from 2.98–3.11 Å. There are two inequivalent P4+ sites. In the first P4+ site, P4+ is bonded in a trigonal non-coplanar geometry to three Se2- atoms. There are a spread of P–Se bond distances ranging from 2.17–2.25 Å. In the second P4+ site, P4+ is bonded in a trigonal non-coplanar geometry to three Se2- atoms. There are a spread of P–Se bond distances ranging from 2.19–2.25 Å. There are six inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 3-coordinate geometry to two equivalent Y3+ and one P4+ atom. In the second Se2- site, Se2- is bonded in a 1-coordinate geometry to four equivalent K1+ and one P4+ atom. In the third Se2- site, Se2- is bonded in a 3-coordinate geometry to one K1+, one Y3+, and one P4+ atom. In the fourth Se2- site, Se2- is bonded in a 4-coordinate geometry to one K1+, two equivalent Y3+, and one P4+ atom. In the fifth Se2- site, Se2- is bonded in a 4-coordinate geometry to two equivalent K1+, one Y3+, and one P4+ atom. In the sixth Se2- site, Se2- is bonded in a distorted trigonal non-coplanar geometry to two equivalent Y3+ and one P4+ atom.
KY(NH2)4 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. K1+ is bonded in a 8-coordinate geometry to four N3- and four H1+ atoms. There are a spread of K–N bond distances ranging from 2.90–2.95 Å. There are a spread of K–H bond distances ranging from 2.73–2.89 Å. Y3+ is bonded to six N3- atoms to form edge-sharing YN6 octahedra. There are a spread of Y–N bond distances ranging from 2.37–2.51 Å. There are four inequivalent N3- sites. In the first N3- site, N3- is bonded in a distorted water-like geometry to two equivalent K1+, one Y3+, and two H1+ atoms. Both N–H bond lengths are 1.03 Å. In the second N3- site, N3- is bonded in a distorted water-like geometry to two equivalent Y3+ and two H1+ atoms. Both N–H bond lengths are 1.03 Å. In the third N3- site, N3- is bonded in a distorted water-like geometry to two equivalent K1+, one Y3+, and two H1+ atoms. Both N–H bond lengths are 1.03 Å. In the fourth N3- site, N3- is bonded in a distorted water-like geometry to two equivalent Y3+ and two H1+ atoms. Both N–H bond lengths are 1.03 Å. There are eight inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one K1+ and one N3- atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one K1+ and one N3- atom. In the sixth H1+ site, H1+ is bonded in a single-bond geometry to one K1+ and one N3- atom. In the seventh H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the eighth H1+ site, H1+ is bonded in a single-bond geometry to one K1+ and one N3- atom.
KY(CO3)4 crystallizes in the tetragonal I4_1/a space group. The structure is three-dimensional. K is bonded in a 8-coordinate geometry to eight O atoms. There are four shorter (2.58 Å) and four longer (3.32 Å) K–O bond lengths. Y is bonded in a 8-coordinate geometry to eight O atoms. There are four shorter (2.37 Å) and four longer (2.38 Å) Y–O bond lengths. C is bonded in a distorted bent 120 degrees geometry to two O atoms. Both C–O bond lengths are 1.26 Å. There are three inequivalent O sites. In the first O site, O is bonded in a bent 120 degrees geometry to one Y and one C atom. In the second O site, O is bonded in a single-bond geometry to one K atom. In the third O site, O is bonded in a distorted trigonal planar geometry to one K, one Y, and one C atom.
KY is alpha Samarium-derived structured and crystallizes in the hexagonal P-6m2 space group. The structure is three-dimensional. K is bonded to six equivalent K and six equivalent Y atoms to form KK6Y6 cuboctahedra that share corners with eighteen equivalent KK6Y6 cuboctahedra, edges with six equivalent KK6Y6 cuboctahedra, edges with twelve equivalent YK6Y6 cuboctahedra, faces with eight equivalent KK6Y6 cuboctahedra, and faces with twelve equivalent YK6Y6 cuboctahedra. All K–K bond lengths are 3.67 Å. All K–Y bond lengths are 4.16 Å. Y is bonded to six equivalent K and six equivalent Y atoms to form YK6Y6 cuboctahedra that share corners with eighteen equivalent YK6Y6 cuboctahedra, edges with six equivalent YK6Y6 cuboctahedra, edges with twelve equivalent KK6Y6 cuboctahedra, faces with eight equivalent YK6Y6 cuboctahedra, and faces with twelve equivalent KK6Y6 cuboctahedra. All Y–Y bond lengths are 3.67 Å.
KY(BH4)4 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. K1+ is bonded to six H+0.50+ atoms to form distorted KH6 octahedra that share corners with six BH4 tetrahedra and edges with two equivalent KH6 octahedra. There are two shorter (2.74 Å) and four longer (2.90 Å) K–H bond lengths. Y3+ is bonded to twelve H+0.50+ atoms to form distorted YH12 cuboctahedra that share faces with four BH4 tetrahedra. There are a spread of Y–H bond distances ranging from 2.29–2.37 Å. There are two inequivalent B3- sites. In the first B3- site, B3- is bonded to four H+0.50+ atoms to form BH4 tetrahedra that share a cornercorner with one KH6 octahedra and a faceface with one YH12 cuboctahedra. The corner-sharing octahedral tilt angles are 66°. There is one shorter (1.20 Å) and three longer (1.24 Å) B–H bond length. In the second B3- site, B3- is bonded to four H+0.50+ atoms to form BH4 tetrahedra that share corners with two equivalent KH6 octahedra and a faceface with one YH12 cuboctahedra. The corner-sharing octahedral tilt angles are 72°. There is one shorter (1.21 Å) and three longer (1.24 Å) B–H bond length. There are six inequivalent H+0.50+ sites. In the first H+0.50+ site, H+0.50+ is bonded in a distorted single-bond geometry to one Y3+ and one B3- atom. In the second H+0.50+ site, H+0.50+ is bonded in a distorted single-bond geometry to one K1+ and one B3- atom. In the third H+0.50+ site, H+0.50+ is bonded in a distorted single-bond geometry to one Y3+ and one B3- atom. In the fourth H+0.50+ site, H+0.50+ is bonded in a single-bond geometry to two equivalent K1+ and one B3- atom. In the fifth H+0.50+ site, H+0.50+ is bonded in a single-bond geometry to one Y3+ and one B3- atom. In the sixth H+0.50+ site, H+0.50+ is bonded in a distorted single-bond geometry to one Y3+ and one B3- atom.
KY(CuO2)2 crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. K1+ is bonded to eight equivalent O2- atoms to form distorted edge-sharing KO8 hexagonal bipyramids. All K–O bond lengths are 2.90 Å. Y3+ is bonded in a body-centered cubic geometry to eight equivalent O2- atoms. All Y–O bond lengths are 2.41 Å. Cu2+ is bonded in a square co-planar geometry to four equivalent O2- atoms. All Cu–O bond lengths are 1.95 Å. O2- is bonded in a 6-coordinate geometry to two equivalent K1+, two equivalent Y3+, and two equivalent Cu2+ atoms.
KY(SeO3)2 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. K1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of K–O bond distances ranging from 2.87–3.08 Å. Y3+ is bonded in an octahedral geometry to six O2- atoms. There are a spread of Y–O bond distances ranging from 2.24–2.30 Å. There are two inequivalent Se4+ sites. In the first Se4+ site, Se4+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There is two shorter (1.72 Å) and one longer (1.73 Å) Se–O bond length. In the second Se4+ site, Se4+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There is one shorter (1.72 Å) and two longer (1.73 Å) Se–O bond length. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Y3+ and one Se4+ atom. In the second O2- site, O2- is bonded in a 3-coordinate geometry to one K1+, one Y3+, and one Se4+ atom. In the third O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent K1+, one Y3+, and one Se4+ atom. In the fourth O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent K1+, one Y3+, and one Se4+ atom.
KY(CO3)2 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. K1+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of K–O bond distances ranging from 2.80–3.24 Å. Y3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Y–O bond distances ranging from 2.30–2.50 Å. C4+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of C–O bond distances ranging from 1.28–1.32 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent K1+, one Y3+, and one C4+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent K1+, one Y3+, and one C4+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one K1+, two equivalent Y3+, and one C4+ atom.
KY(NbCl3)6 crystallizes in the trigonal R3 space group. The structure is three-dimensional. K1+ is bonded to twelve Cl1- atoms to form KCl12 cuboctahedra that share corners with three equivalent YCl6 octahedra, corners with six NbCl5 square pyramids, edges with three equivalent NbCl5 square pyramids, and faces with three equivalent NbCl5 square pyramids. The corner-sharing octahedral tilt angles are 51°. There are a spread of K–Cl bond distances ranging from 3.53–3.62 Å. Y3+ is bonded to six Cl1- atoms to form YCl6 octahedra that share corners with three equivalent KCl12 cuboctahedra and corners with six NbCl5 square pyramids. There are three shorter (2.66 Å) and three longer (2.71 Å) Y–Cl bond lengths. There are two inequivalent Nb+2.33+ sites. In the first Nb+2.33+ site, Nb+2.33+ is bonded to five Cl1- atoms to form NbCl5 square pyramids that share a cornercorner with one KCl12 cuboctahedra, a cornercorner with one YCl6 octahedra, corners with four NbCl5 square pyramids, and a faceface with one KCl12 cuboctahedra. The corner-sharing octahedral tilt angles are 46°. There are a spread of Nb–Cl bond distances ranging from 2.46–2.72 Å. In the second Nb+2.33+ site, Nb+2.33+ is bonded to five Cl1- atoms to form NbCl5 square pyramids that share a cornercorner with one KCl12 cuboctahedra, a cornercorner with one YCl6 octahedra, corners with four NbCl5 square pyramids, and an edgeedge with one KCl12 cuboctahedra. The corner-sharing octahedral tilt angles are 45°. There are a spread of Nb–Cl bond distances ranging from 2.47–2.71 Å. There are six inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a distorted bent 150 degrees geometry to one Y3+ and one Nb+2.33+ atom. In the second Cl1- site, Cl1- is bonded in a 2-coordinate geometry to one K1+ and two equivalent Nb+2.33+ atoms. In the third Cl1- site, Cl1- is bonded in a 3-coordinate geometry to one K1+ and two equivalent Nb+2.33+ atoms. In the fourth Cl1- site, Cl1- is bonded in a 2-coordinate geometry to two Nb+2.33+ atoms. In the fifth Cl1- site, Cl1- is bonded in a 3-coordinate geometry to one K1+ and two Nb+2.33+ atoms. In the sixth Cl1- site, Cl1- is bonded in a 3-coordinate geometry to one K1+, one Y3+, and one Nb+2.33+ atom.
KY(TeO3)2 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. K1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of K–O bond distances ranging from 2.88–3.13 Å. Y3+ is bonded in an octahedral geometry to six O2- atoms. There are a spread of Y–O bond distances ranging from 2.26–2.31 Å. There are two inequivalent Te4+ sites. In the first Te4+ site, Te4+ is bonded in a 3-coordinate geometry to three O2- atoms. There is two shorter (1.89 Å) and one longer (1.90 Å) Te–O bond length. In the second Te4+ site, Te4+ is bonded in a distorted trigonal non-coplanar geometry to three O2- atoms. All Te–O bond lengths are 1.89 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Y3+ and one Te4+ atom. In the second O2- site, O2- is bonded in a 3-coordinate geometry to one K1+, one Y3+, and one Te4+ atom. In the third O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent K1+, one Y3+, and one Te4+ atom. In the fourth O2- site, O2- is bonded to two equivalent K1+, one Y3+, and one Te4+ atom to form a mixture of distorted edge and corner-sharing OK2YTe tetrahedra.