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At least 883 records · Page 49
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on SbTeOs by Materials Project

OsSbTe crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Os1- is bonded to three equivalent Sb3+ and three equivalent Te2- atoms to form a mixture of distorted edge and corner-sharing OsSb3Te3 octahedra. The corner-sharing octahedra tilt angles range from 51–58°. There are a spread of Os–Sb bond distances ranging from 2.69–2.72 Å. There are one shorter (2.62 Å) and two longer (2.63 Å) Os–Te bond lengths. Sb3+ is bonded in a 4-coordinate geometry to three equivalent Os1- and one Te2- atom. The Sb–Te bond length is 2.94 Å. Te2- is bonded in a 4-coordinate geometry to three equivalent Os1- and one Sb3+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on PrPOs2C by Materials Project

PrOs2CP crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Pr3+ is bonded in a distorted rectangular see-saw-like geometry to four equivalent C4- atoms. All Pr–C bond lengths are 2.72 Å. Os2- is bonded in a distorted single-bond geometry to one C4- and three equivalent P5+ atoms. The Os–C bond length is 1.89 Å. There are one shorter (2.45 Å) and two longer (2.53 Å) Os–P bond lengths. C4- is bonded to four equivalent Pr3+ and two equivalent Os2- atoms to form a mixture of edge and corner-sharing CPr4Os2 octahedra. The corner-sharing octahedral tilt angles are 22°. P5+ is bonded in a 6-coordinate geometry to six equivalent Os2- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CsOsC3(ClO)3 by Materials Project

CsOsC3(OCl)3 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Cs1+ is bonded in a 8-coordinate geometry to one O2- and seven Cl1- atoms. The Cs–O bond length is 3.42 Å. There are a spread of Cs–Cl bond distances ranging from 3.49–3.79 Å. Os2- is bonded in an octahedral geometry to three C+3.33+ and three Cl1- atoms. There is two shorter (1.89 Å) and one longer (1.90 Å) Os–C bond length. There are a spread of Os–Cl bond distances ranging from 2.45–2.47 Å. There are three inequivalent C+3.33+ sites. In the first C+3.33+ site, C+3.33+ is bonded in a linear geometry to one Os2- and one O2- atom. The C–O bond length is 1.16 Å. In the second C+3.33+ site, C+3.33+ is bonded in a linear geometry to one Os2- and one O2- atom. The C–O bond length is 1.16 Å. In the third C+3.33+ site, C+3.33+ is bonded in a linear geometry to one Os2- and one O2- atom. The C–O bond length is 1.16 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one C+3.33+ atom. In the second O2- site, O2- is bonded in a single-bond geometry to one Cs1+ and one C+3.33+ atom. In the third O2- site, O2- is bonded in a single-bond geometry to one C+3.33+ atom. There are three inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a 3-coordinate geometry to two equivalent Cs1+ and one Os2- atom. In the second Cl1- site, Cl1- is bonded in a 1-coordinate geometry to three equivalent Cs1+ and one Os2- atom. In the third Cl1- site, Cl1- is bonded in a 1-coordinate geometry to two equivalent Cs1+ and one Os2- atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on POsSe by Materials Project

OsPSe crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Os5+ is bonded to three equivalent P3- and three equivalent Se2- atoms to form OsP3Se3 octahedra that share corners with eight equivalent OsP3Se3 octahedra, corners with three equivalent POs3Se tetrahedra, corners with three equivalent SePOs3 tetrahedra, and edges with two equivalent OsP3Se3 octahedra. The corner-sharing octahedra tilt angles range from 55–60°. There are one shorter (2.40 Å) and two longer (2.41 Å) Os–P bond lengths. All Os–Se bond lengths are 2.47 Å. P3- is bonded to three equivalent Os5+ and one Se2- atom to form distorted POs3Se tetrahedra that share corners with three equivalent OsP3Se3 octahedra, corners with four equivalent POs3Se tetrahedra, corners with nine equivalent SePOs3 tetrahedra, and an edgeedge with one POs3Se tetrahedra. The corner-sharing octahedra tilt angles range from 64–72°. The P–Se bond length is 2.45 Å. Se2- is bonded to three equivalent Os5+ and one P3- atom to form SePOs3 tetrahedra that share corners with three equivalent OsP3Se3 octahedra, corners with four equivalent SePOs3 tetrahedra, corners with nine equivalent POs3Se tetrahedra, and an edgeedge with one SePOs3 tetrahedra. The corner-sharing octahedra tilt angles range from 73–82°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on LiTaOs2 by Materials Project

LiTaOs2 crystallizes in the orthorhombic Immm space group. The structure is one-dimensional and consists of two LiTaOs2 ribbons oriented in the (1, 0, 0) direction. Li1+ is bonded in a linear geometry to two equivalent Os2- atoms. Both Li–Os bond lengths are 2.64 Å. Ta3+ is bonded in a linear geometry to two equivalent Os2- atoms. Both Ta–Os bond lengths are 2.24 Å. Os2- is bonded in a linear geometry to one Li1+ and one Ta3+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Nb2B2Os by Materials Project

Nb2OsB2 is Tungsten boride-derived structured and crystallizes in the tetragonal P4/mnc space group. The structure is three-dimensional. Nb4+ is bonded in a 10-coordinate geometry to four equivalent Os2- and six equivalent B3- atoms. There are two shorter (2.74 Å) and two longer (2.85 Å) Nb–Os bond lengths. There are a spread of Nb–B bond distances ranging from 2.42–2.49 Å. Os2- is bonded in a 12-coordinate geometry to eight equivalent Nb4+ and four equivalent B3- atoms. All Os–B bond lengths are 2.40 Å. B3- is bonded in a 9-coordinate geometry to six equivalent Nb4+, two equivalent Os2-, and one B3- atom. The B–B bond length is 1.90 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on MnVOs2 by Materials Project

VMnOs2 crystallizes in the orthorhombic Immm space group. The structure is one-dimensional and consists of two VMnOs2 ribbons oriented in the (1, 0, 0) direction. V2+ is bonded in a linear geometry to two equivalent Os2- atoms. Both V–Os bond lengths are 2.13 Å. Mn2+ is bonded in a linear geometry to two equivalent Os2- atoms. Both Mn–Os bond lengths are 2.52 Å. Os2- is bonded in a linear geometry to one V2+ and one Mn2+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on RbOsN2 by Materials Project

RbOsN2 crystallizes in the orthorhombic Pbca space group. The structure is three-dimensional. there are two inequivalent Rb1+ sites. In the first Rb1+ site, Rb1+ is bonded in a 8-coordinate geometry to eight N3- atoms. There are a spread of Rb–N bond distances ranging from 3.18–3.42 Å. In the second Rb1+ site, Rb1+ is bonded in a 7-coordinate geometry to seven N3- atoms. There are a spread of Rb–N bond distances ranging from 3.08–3.45 Å. There are two inequivalent Os5+ sites. In the first Os5+ site, Os5+ is bonded to four N3- atoms to form corner-sharing OsN4 tetrahedra. There is two shorter (1.86 Å) and two longer (1.89 Å) Os–N bond length. In the second Os5+ site, Os5+ is bonded to four N3- atoms to form corner-sharing OsN4 tetrahedra. There are a spread of Os–N bond distances ranging from 1.85–1.91 Å. There are four inequivalent N3- sites. In the first N3- site, N3- is bonded in a 2-coordinate geometry to three Rb1+ and two equivalent Os5+ atoms. In the second N3- site, N3- is bonded in a distorted linear geometry to four Rb1+ and two Os5+ atoms. In the third N3- site, N3- is bonded in a distorted linear geometry to four Rb1+ and two Os5+ atoms. In the fourth N3- site, N3- is bonded in a distorted linear geometry to four Rb1+ and two equivalent Os5+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on PuB2Os3 by Materials Project

PuOs3B2 crystallizes in the hexagonal P6/mmm space group. The structure is three-dimensional. Pu3+ is bonded to two equivalent Pu3+ and twelve equivalent Os1- atoms to form distorted PuPu2Os12 cuboctahedra that share corners with fourteen equivalent PuPu2Os12 cuboctahedra, edges with six equivalent PuPu2Os12 cuboctahedra, edges with twelve equivalent BOs6 pentagonal pyramids, faces with two equivalent PuPu2Os12 cuboctahedra, and faces with six equivalent BOs6 pentagonal pyramids. Both Pu–Pu bond lengths are 2.97 Å. All Pu–Os bond lengths are 3.17 Å. Os1- is bonded in a distorted square co-planar geometry to four equivalent Pu3+ and four equivalent B atoms. All Os–B bond lengths are 2.19 Å. B is bonded to six equivalent Os1- atoms to form distorted BOs6 pentagonal pyramids that share corners with six equivalent BOs6 pentagonal pyramids, edges with six equivalent PuPu2Os12 cuboctahedra, edges with three equivalent BOs6 pentagonal pyramids, faces with three equivalent PuPu2Os12 cuboctahedra, and faces with two equivalent BOs6 pentagonal pyramids.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Zr4Os2C by Materials Project

Zr4Os2C crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. there are two inequivalent Zr2+ sites. In the first Zr2+ site, Zr2+ is bonded in a distorted hexagonal planar geometry to six equivalent Os2- atoms. All Zr–Os bond lengths are 2.72 Å. In the second Zr2+ site, Zr2+ is bonded in a 2-coordinate geometry to two equivalent Os2- and two equivalent C4- atoms. Both Zr–Os bond lengths are 2.95 Å. Both Zr–C bond lengths are 2.35 Å. Os2- is bonded in a 12-coordinate geometry to six Zr2+ atoms. C4- is bonded to six equivalent Zr2+ atoms to form corner-sharing CZr6 octahedra. The corner-sharing octahedral tilt angles are 39°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on OsN by Materials Project

OsN crystallizes in the orthorhombic Cmc2_1 space group. The structure is two-dimensional and consists of two OsN sheets oriented in the (0, 1, 0) direction. there are two inequivalent Os3+ sites. In the first Os3+ site, Os3+ is bonded in an L-shaped geometry to two equivalent N3- atoms. Both Os–N bond lengths are 2.06 Å. In the second Os3+ site, Os3+ is bonded in a rectangular see-saw-like geometry to four N3- atoms. There are a spread of Os–N bond distances ranging from 2.07–2.17 Å. There are two inequivalent N3- sites. In the first N3- site, N3- is bonded to three Os3+ and one N3- atom to form distorted corner-sharing NOs3N tetrahedra. The N–N bond length is 1.42 Å. In the second N3- site, N3- is bonded to three equivalent Os3+ and one N3- atom to form distorted corner-sharing NOs3N tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CePOs2C by Materials Project

CeOs2CP crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Ce3+ is bonded in a distorted rectangular see-saw-like geometry to four equivalent C4- atoms. All Ce–C bond lengths are 2.68 Å. Os2- is bonded in a distorted single-bond geometry to one C4- and three equivalent P5+ atoms. The Os–C bond length is 1.90 Å. There are one shorter (2.44 Å) and two longer (2.49 Å) Os–P bond lengths. C4- is bonded to four equivalent Ce3+ and two equivalent Os2- atoms to form a mixture of corner and edge-sharing CCe4Os2 octahedra. The corner-sharing octahedral tilt angles are 22°. P5+ is bonded in a 6-coordinate geometry to six equivalent Os2- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on ThSiOs2C by Materials Project

ThOs2SiC crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Th4+ is bonded in a 4-coordinate geometry to four equivalent C4- atoms. All Th–C bond lengths are 2.75 Å. Os2- is bonded in a 4-coordinate geometry to three equivalent Si4+ and one C4- atom. There are one shorter (2.51 Å) and two longer (2.53 Å) Os–Si bond lengths. The Os–C bond length is 1.90 Å. Si4+ is bonded in a 6-coordinate geometry to six equivalent Os2- atoms. C4- is bonded to four equivalent Th4+ and two equivalent Os2- atoms to form a mixture of edge and corner-sharing CTh4Os2 octahedra. The corner-sharing octahedral tilt angles are 25°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on B4Os by Materials Project

OsB4 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. there are two inequivalent Os6+ sites. In the first Os6+ site, Os6+ is bonded in a 12-coordinate geometry to fourteen B+1.50- atoms. There are two shorter (2.36 Å) and twelve longer (2.40 Å) Os–B bond lengths. In the second Os6+ site, Os6+ is bonded to twelve equivalent B+1.50- atoms to form face-sharing OsB12 cuboctahedra. All Os–B bond lengths are 2.41 Å. There are two inequivalent B+1.50- sites. In the first B+1.50- site, B+1.50- is bonded in a 9-coordinate geometry to four Os6+ and five B+1.50- atoms. There are a spread of B–B bond distances ranging from 1.77–1.93 Å. In the second B+1.50- site, B+1.50- is bonded in a 1-coordinate geometry to one Os6+ and seven B+1.50- atoms. The B–B bond length is 1.73 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SmPOs2C by Materials Project

SmOs2CP crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Sm3+ is bonded in a distorted rectangular see-saw-like geometry to four equivalent C4- atoms. All Sm–C bond lengths are 2.68 Å. Os2- is bonded in a distorted single-bond geometry to one C4- and three equivalent P5+ atoms. The Os–C bond length is 1.89 Å. There are one shorter (2.43 Å) and two longer (2.50 Å) Os–P bond lengths. C4- is bonded to four equivalent Sm3+ and two equivalent Os2- atoms to form a mixture of corner and edge-sharing CSm4Os2 octahedra. The corner-sharing octahedral tilt angles are 22°. P5+ is bonded in a 6-coordinate geometry to six equivalent Os2- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on ZrPOs by Materials Project

ZrOsP crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Zr4+ is bonded in a 11-coordinate geometry to six equivalent Os1- and five equivalent P3- atoms. There are a spread of Zr–Os bond distances ranging from 2.93–3.01 Å. There are three shorter (2.77 Å) and two longer (2.79 Å) Zr–P bond lengths. Os1- is bonded in a 12-coordinate geometry to six equivalent Zr4+ and four equivalent P3- atoms. There are a spread of Os–P bond distances ranging from 2.43–2.48 Å. P3- is bonded in a 9-coordinate geometry to five equivalent Zr4+ and four equivalent Os1- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

A nomogram for prediction of stage III/IV gastric cancer outcome after surgery: A multicenter population‐based study

Abstract Most patients with gastric cancer (GC) are first diagnosed at stage III‐IV and surgery resection remains the primary therapeutic modality for these patients. However, clinical staging used for prediction of those patients provides limited information. We collected clinicopathological data and disease‐progression information from 508 patients with stage III‐IV GC at three Chinese hospitals and 1298 patients from the Surveillance, Epidemiology, and End Results database. Based on the stepwise multivariate regression model, we constructed a novel nomogram to predict overall survival (OS). The performance of discrimination for this model was measured using Harrell's concordance index (C‐index) and receiver‐operating characteristic curve (ROC), and was validated using calibration plots. Multivariate Cox regression analyses showed that tumor size, age at diagnosis, N stage, tumor grade, and distant metastases were outstanding independent prognostic factors of stage III‐IV GC. We developed a nomogram based on these five prognostic predictors. In the training set, the C‐index of the nomogram was 0.645 (95% CI: 0.611‐0.679), which was higher than that of the American Joint Committee on Cancer TNM system alone (sixth TNM: 0.544; seventh TNM: 0.575; eighth TNM: 0.568). Similar results were observed in validation cohort. Moreover, calibration blots demonstrated good consistency between the actual and predicted OS probabilities. According to the nomogram, GC individuals could be classified into three groups (low‐, middle‐, and high‐risk) ( P < .001). Our nomogram complements the current staging system for prediction of individual prognosis with stage III‐IV GC, and may be helpful for making individualized treatment decisions.

Gao, Zhiying↗
DOE OSTI2022

A phase 2 study of sorafenib combined with conventional therapies in refractory central nervous system leukemia

Background Patients with refractory central nervous system leukemia (CNSL) have a dismal prognosis and lack effective therapy. Case reports have shown that sorafenib is effective against brain metastases, including leukemia. Methods To explore the efficacy of sorafenib combined with conventional therapies for refractory CNSL, a phase 2 study was conducted. The primary end point was the complete remission rate (CRR) within 8 weeks of treatment. Secondary end points included the overall response rate (ORR), event‐free survival (EFS), overall survival (OS), and adverse events (AEs). Results Twenty‐six patients with refractory CNSL were enrolled; they included 17 with isolated CNSL, 7 with hematological relapse, and 2 with another extramedullary relapse. After 8 weeks of treatment, 21 patients achieved complete remission, 2 achieved partial remission, and 3 achieved no remission for a CRR of 80.8% (95% CI, 62.1%‐91.5%) and an ORR of 88.5% (95% CI, 71.0%‐96.0%). Twenty patients survived, and 6 died. The 2‐year EFS and OS rates were 75.0% (95% CI, 54.5%‐88.3%) and 76.9% (95% CI, 54.2%‐90.4%), respectively. Six patients experienced grade 3 or 4 treatment‐related AEs, including moderate chronic graft‐vs‐host disease (n = 3), grade 3 or 4 acute graft‐vs‐host disease (n = 2), and grade 3 skin rash (n = 1). No treatment‐related deaths occurred during the therapy of refractory CNSL. Conclusions Sorafenib combined with conventional therapies is effective and safe for refractory CNSL. Lay Summary Sorafenib combined with conventional therapies is effective and safe for refractory central nervous system leukemia.

Chen, Xiaoxia↗