Investigating structure, magneto-electronic, and thermoelectric properties of the new d0 quaternary Heusler compounds RbCaCZ (Z = P, As, Sb) from first principle calculations

818-824The ab initio calculations based on the density functional theory (DFT) using the self-consistent full potential linearized augmented plane wave (FPLAPW) method were performed to explore the electronic structures, magnetic and thermoelectric properties of quaternary alloys RbCaCZ (Z = P, As, Sb) with quaternary Heusler structure. Results showed that FM-Y3 is the most favorable atomic arrangement. All the compounds are found to be half-metallic ferromagnetic materials with an integer magnetic moment of 2.00 μB, which predominantly derives from the strong spin polarization of p channels of C hybridized with Z elements. The predicted minority (half-metallic) band gaps were found to be 1.86 (0.87), 1.72 (0.78), and 1.78 (0.71) eV for Z = P, As, and Sb, respectively. Thermoelectric properties of the RbCaCZ (Z = P, As, Sb) materials are additionally computed over an extensive variety of temperature and it is discovered that all compounds demonstrates higher figure of merit. The half-metallic structures of these compounds with large band gaps and adequate Seebeck coefficients mean that they are suitable for use in spintronic and thermoelectric device applications

Toward Male Individualization with Rapidly Mutating Y-Chromosomal Short Tandem Repeats

Peer reviewe

First results of the THEMIS search coil magnetometers

International audienceWe present the first data from the THEMIS Search Coil Magnetometers (SCM), taken between March and June 2007 while the THEMIS constellation apogee moved from the duskside toward the dawnside. Data reduction, especially the SCM calibration method and spurious noise reduction process, is described. The signatures of magnetic fluctuations in key magnetospheric regions such as the bow shock, the magnetopause and the magnetotail during a substorm, are described. We also discuss the role that magnetic fluctuations could play in plasma transport, acceleration and heating

ILMA: Ion Laser Mass Analyser. A Mass-Spectrometer for In-Situ Characterization of a Near Earth Object (NEO)

Symposium B, session 04, paper number B04-0044-10 (Oral)Like other small bodies of the Solar System, asteroids are the remnants of planet formation. Their compositions are inherited from the Solar Nebula at the time of planetesimals accretion into planets, 4.5 billion years ago. They are valuable objects to assess the physicochemical conditions prevailing at the time and place of their formation in the Solar Nebula. Among them, some are known to be rich in carbon and volatile species (including water), which suggests that they never underwent major heating and differentiation events. Their organic content is also of prime interest because the chemical evolution leading to life on Earth may have been initiated by the delivery of extraterrestrial organic compounds into primitive oceans. For these reasons, several space missions are currently considered by ESA and JAXA for a sample return mission to a primitive carbonaceous Near-Earth Object (NEO): MARCO POLO, HAYABUZA 2, etc... Their goal is to characterize a NEO at multiple scales via in-situ measurements by a science payload onboard an orbiter and a lander, and to bring samples back to Earth. ILMA is a concept for a new generation high resolution mass spectrometer, proposed to be part of a lander payload for in situ science. This instrument will be a Fourier Transform ion trap mass spectrometer using Laser Desorption and Ionization Mass Spectrometry (LDIMS) into a single platform. To this end, an Orbitrap mass analyser (developed by the Thermofisher Company) will be coupled to a laser source. The sample will be exposed to the laser beam producing desorbed ions which will be collected into the ion trap using the orbital trapping method. Ions will be stabilized in the trap by purely electrostatic quadro-logarithmic electrical fields and the detection undertaken by a non destructive measurement of the ion oscillation frequency inside the trap. Indeed, the trapped ions induce a periodic signal converted using Fourier Transform (FT) into an ultra-high mass resolution spectrum (M/∆M > 60,000 up to m/z =400 u). Moreover, ILMA is planned to become one of the lightest (2 kg), smallest (15x15x5 cm3 without the electronic box) and low power consumption (around 9 Watts) mass spectrometer ever achieved for space. Therefore ILMA will constitute a significant progress compared to previous mass spectrometers in space, allowing to distinguish isomass compounds and to measure isotopomer abundances. ILMA will be able to measure in situ chemical (mineral and organic) and isotopic compositions of the NEO, and should bring a new light of their astrobiological relevance for the study of the origin of life on Earth

Timed continuous Petri nets based control for metabolome under Michaelis-Menten kinetics

Relevant for various areas of human genetics, Y-chromosomal short tandem repeats (Y-STRs) are commonly used for testing close paternal relationships among individuals and populations, and for male lineage identification. However, even the widely used 17-loci Yfiler set cannot resolve individuals and populations completely. Here, 52 centers generated quality-controlled data of 13 rapidly mutating (RM) Y-STRs in 14,644 related and unrelated males from 111 worldwide populations. Strikingly, >99% of the 12,272 unrelated males were completely individualized. Haplotype diversity was extremely high (global: 0.9999985, regional: 0.99836-0.9999988). Haplotype sharing between populations was almost absent except for six (0.05%) of the 12,156 haplotypes. Haplotype sharing within populations was generally rare (0.8% nonunique haplotypes), significantly lower in urban (0.9%) than rural (2.1%) and highest in endogamous groups (14.3%). Analysis of molecular variance revealed 99.98% of variation within populations, 0.018% among populations within groups, and 0.002% among groups. Of the 2,372 newly and 156 previously typed male relative pairs, 29% were differentiated including 27% of the 2,378 father-son pairs. Relative to Yfiler, haplotype diversity was increased in 86% of the populations tested and overall male relative differentiation was raised by 23.5%. Our study demonstrates the value of RM Y-STRs in identifying and separating unrelated and related males and provides a reference database. The value of 13 rapidly-mutating (RM) Y-STRs for differentiating male individuals is investigated in 14,644 related and unrelated men sampled from 111 worldwide populations. Over 99% of the 12,272 unrelated men were completely individualized. Of the 2,378 father-son pairs, 27% were separated. Figure: blue lines represent Y-STR haplotypes shared between population pairs in a subset of 7,784 males from 65 populations. Almost all shared haplotypes defined by conventional 17 Yfiler Y-STRs (above) are resolved with the 13 RM Y-STRs (below). " 2014 Wiley Periodicals, Inc.",,,,,,"10.1002/humu.22599",,,"http://hdl.handle.net/20.500.12104/45403","http://www.scopus.com/inward/record.url?eid=2-s2.0-84904433303&partnerID=40&md5=5453bf3ae0a0e8a4afc63290ca405244",,,,,,"8",,"Human Mutation",,"102