Materials Science Research Rack Onboard the International Space Station

The Materials Science Research Rack (MSRR) is a research facility developed under a cooperative research agreement between NASA and ESA for materials science investigations on the International Space Station (ISS). MSRR was launched on STS-128 in August 2009 and currently resides in the U.S. Destiny Laboratory Module. Since that time, MSRR has logged more than 1000 hours of operating time. The MSRR accommodates advanced investigations in the microgravity environment on the ISS for basic materials science research in areas such as solidification of metals and alloys. The purpose is to advance the scientific understanding of materials processing as affected by microgravity and to gain insight into the physical behavior of materials processing. MSRR allows for the study of a variety of materials, including metals, ceramics, semiconductor crystals, and glasses. Materials science research benefits from the microgravity environment of space, where the researcher can better isolate chemical and thermal properties of materials from the effects of gravity. With this knowledge, reliable predictions can be made about the conditions required on Earth to achieve improved materials. MSRR is a highly automated facility with a modular design capable of supporting multiple types of investigations. The NASA-provided Rack Support Subsystem provides services (power, thermal control, vacuum access, and command and data handling) to the ESA-developed Materials Science Laboratory (MSL) that accommodates interchangeable Furnace Inserts (FI). Two ESA-developed FIs are presently available on the ISS: the Low Gradient Furnace (LGF) and the Solidification and Quenching Furnace (SQF). Sample Cartridge Assemblies (SCAs), each containing one or more material samples, are installed in the FI by the crew and can be processed at temperatures up to 1400C. ESA continues to develop samples with 14 planned for launch and processing in the near future. Additionally NASA has begun developing SCAs to support US PIs and their partners. The first of these Flight SCAs are being developed for investigations to support research in the areas of crystal growth and liquid phase sintering. Subsequent investigations are in various stages of development. US investigations will include a ground test program in order to distinguish the particular effects of the absence of gravity

The Local Edge Machine: inference of dynamic models of gene regulation

We present a novel approach, the Local Edge Machine, for the inference of regulatory interactions directly from time-series gene expression data. We demonstrate its performance, robustness, and scalability on in silico datasets with varying behaviors, sizes, and degrees of complexity. Moreover, we demonstrate its ability to incorporate biological prior information and make informative predictions on a well-characterized in vivo system using data from budding yeast that have been synchronized in the cell cycle. Finally, we use an atlas of transcription data in a mammalian circadian system to illustrate how the method can be used for discovery in the context of large complex networks.Department of Applied Mathematic

Accountability: Construct Definition and Measurement of a Virtue Vital to Flourishing

Embracing accountability to others for one’s responsibilities within relationships is important for flourishing, yet underexamined. An interdisciplinary team defined the construct of accountability and developed an 11-item single-factor Accountability Scale. In national samples with US census demographic representation (total N = 1257), we conducted psychometric analyses using methods from classical test theory (exploratory and confirmatory factor analyses) and item response theory. The Accountability Scale demonstrated internal consistency, construct validity, test-retest reliability, and incremental validity. Accountability correlated positively with relational variables (agreeableness, empathy) responsibility-oriented variables (conscientiousness, self-regulation), virtues (gratitude, forgiveness, limitations-owning humility), relational repair, perceived meaning presence, and flourishing, inversely with symptoms (personality disorders, temper, anxiety, depression), and weakly with searching for meaning and social desirability. Accountability scores superseded demographic variables, conscientiousness, and agreeableness to predict relational repair, perceived presence of meaning in life, and flourishing. We offer the accountability construct and scale to advance human flourishing research and applied work

Registered Ship Notes

https://digitalmaine.com/blue_hill_documents/1179/thumbnail.jp

Synthesis of 1,3-diphenyltriazenide complexes of aluminium, gallium and indium: Crystal structure of tris(1,3-diphenyltriazenido)aluminium(III)

The reaction of AlMe3 with 1,3-diphenyltriazene [Hdpt] in toluene gives Al(dpt)3, even when AlMe3 is in large excess. The monomeric structure has been established by X-ray diffraction. Crystals of Al(dpt)3 are monoclinic, space group C2/c with a = 20.587(3), b = 16.005(3), c = 13.236(3) A and [beta] = 119.172(12)[deg], Z = 4, R = 0.067 and Rw = 0.083. The aluminium(III) is coordinated by three chelating triazenido ligands to give a trigonally distorted octahedral geometry. The gallium and indium analogues are also reported.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/28248/1/0000701.pd

Radical Anion Complexes of Tris(1,3-diphenyltriazenido)aluminum More About This Article Radical Anion Complexes of Tis( 1,3-diphenyltiazenido)aluminum

Abstract: Electrochemical studies of Al(dpt)3 (Hdpt = 1,3-diphenyltriazene) by cyclic voltammetry in THF solution reveal three successive pseudo reversible one-electron reduction waves (E112 = -1.50, -1.84, and -2.16 V). The chemical reduction of Al(dpt)3 by sodium metal in THF allows for the isolation of the radical anion complexes [Na(THF)x]n[Al(dpt)3], n = 1 ( l ) , 1 (2), and 3 (3). Characterization by EPR, NMR, UV-visible, and X-ray photoelectron (XP) spectroscopy, in addition to the X-ray structural determination of [PPN] [Al(dpt)3] (4), supports the formation of the f i s t homologous series of ligand-centered aluminum(II1) radical anion complexes. Analogous electrochemical reduction series are observed for the p-methyl-and p-methoxy-substituted triazenides. The dependence of the complex reduction potentials is discussed with respect to the UV-visible spectra of the unreduced complex and the ligand's Hammett substituent constant (a). In contrast, irreversible electrochemical reduction (-1.5 to -2.2 V) occurs for the pentafluoro-and p-fluoro-, p-chloro-, and p-bromo-substituted triazenido complexes. Irreversible reduction also occurs for the alkyl and aryloxide compounds Al(R)z(dpt) (R = 'Bu, 'Bu), Al('Bu)(dpt)z, Al(BHT)z-(dpt), and Al(BHT)(dpt)z (BHT-H = 2,6-di-tert-butyl-4-methylphenol). Ab initio molecular orbital calculations have been carried out on the model compounds Al(HNNNH)3 and [Al(HNNNH)3I3-. The identity of the frontier molecular orbitals and calculated structures are considered in relation to experimental data

Transcendent Accountability Scale Development Data and Materials

This contains files for the Associated Project link that corresponds to (1) the OSF time-stamped, public registration of the overall accountability scale development plan with hypotheses for analyses (https://doi.org/10.17605/OSF.IO/J2DES) and (2) the OSF time-stamped public registration of Transcendent Accountability Scale Development Data and Materials with OSF archived files of all studies' materials and deidentified data including the IRT supplement files and report (https://doi.org/10.17605/OSF.IO/A7T6H)