Vicinity Of CO Research Articles

Fine mapping of Co, a gene controlling columnar growth habit located on apple (Malus×domestica Borkh.) linkage group 10

With 2 figures and 3 tablesAbstractTree architecture and shoot morphology are important factors in apple production systems. Because a columnar growth habit facilitates high‐density planting and labour‐saving fruit production methods, columnar apple breeding programmes are spreading worldwide. Columnar growth habit is controlled by a single dominant gene, Co, on linkage group 10. Fine mapping of Co was conducted using 1000 F1 progeny plants from 31 populations. Novel simple sequence‐repeat (SSR) markers were developed based on the genome sequence of apple ‘Golden Delicious’ and analysed for linkage to Co. Graphical genotyping of 22 progeny with recombination event in the vicinity of Co identified three SSR markers (Mdo.chr10.12, Mdo.chr10.13 and Mdo.chr10.14) that co‐segregated with Co. Mdo.chr10.12 and Mdo.chr10.14 are well suited for marker‐assisted selection because the sizes of the alleles linked to Co are different from those found in common ancestors of current apple breeding germplasm. The Co region was delimited to a 196‐kb region of the apple genome, between markers Mdo.chr10.11 and Mdo.chr10.15.

Enhanced magnetic moments in Co/Mn multilayers: structural and magnetic investigations

The structures and magnetic properties of Co(6)/Mn( t Mn) multilayers were systematically investigated by X-ray diffractometry and SQUID magnetometry to reveal the effects of interfacial d–d hybridization on them. Increasing Mn layer thickness, the main profile in HAXRD patterns changes from a single peak for t Mn⩽7 Å to split peaks for t Mn⩾10 Å. With decreasing the temperature, the magnetization increases greatly through two magnetic transitions at the temperatures much lower than that of bulk α-Mn. At 5 K, the absolute value for the magnetization becomes unusually large. The magnetization is highly anisotropic and for t Mn⩽20 Å, the perpendicular direction is the easy magnetization axis. Correlations between the magnetization, exchange bias and coercive force are found. The high magnetization and the correlations are interpreted in terms of the direct d–d hybridization in the vicinity of Co–Mn interfaces.

A Hyperenergetic CO Shell in the Galactic Center Molecular Cloud Complex

Abstract We report on the detection of a high-velocity feature, CO 1.27$+$0.01, in the Galactic-center molecular-cloud complex. In our 12CO images taken with the NRO 45 m telescope, CO 1.27$+$0.01 appears as the second prominent high-velocity feature, next to CO 0.02–0.02, having a velocity width of $\Delta V \simeq 100 \,\mathrm{km} \,\mathrm{s}^{-1}$ and a size of $9 \,\mathrm{pc} \times 12 \,\mathrm{pc}$. It seems to consist of two expanding shells with sizes of $\sim 10 \,\mathrm{pc}$. The major shell has a kinetic energy of about an order of magnitude larger than the gravitational energy, indicating that the shell is apparently gravitationally unbound. We propose that CO 1.27$+$0.01 may have been accelerated by a series of supernova explosions which occurred within the last $\sim 6 \times 10^4 \,\mathrm{yr}$. No association of a nonthermal radio continuum source suggests a strong magnetic field ($B \gtrsim 0.4 \,\mathrm{mG}$) in the vicinity of CO 1.27$+$0.01.

Measurement and prediction of phase equilibria for water+CO 2 in hydrate forming conditions

CO 2 solubility in H–L W equilibria for which no reliable solubility data are available in the literature were measured together with H–L W–V CO 2 and H–L W–L CO 2 equilibria for water–CO 2–hydrate. The pressure range was from 2 to 20 MPa and the temperature range was from 273 to 285 K. Equations of state have been applied to three-phase equilibria and to gas-rich phase in two-phase equilibria by other investigators. However, they have not been applied to H–L W equilibria so far. In this study applicability of the lattice fluid equation of state was investigated for the unified description of various phase equilibria. With Langmuir constants in the Van der Waals and Platteeuw model for hydrates and hydrogen-bonding free energy of water fitted to data, the method was found to consistently describe various two- and three-phase equilibria of L W–V CO 2 , L W–L CO 2 , L W–V CO 2 –L CO 2 , H–L W–V CO 2 /L CO 2 , H–I–V CO 2 , H–V CO 2 –L CO 2 , H–L W, and H–V CO 2 /L CO 2 . With a single binary interaction parameter, good agreements between observed and calculated results were obtained except for liquid composition in CO 2-rich phases for H–L CO 2 and L W–V CO 2 –L CO 2 equilibria in the vicinity of CO 2 vapor pressure.

Chemical behavior of positive mouns in diamagnetic metal acetylacetonate solid solutions

Abstract Diamagnetic muon yields (P D) in (Al x Co1−x )(acac)3 and (Ga x Co1−x )(acac)3 systems were investigated. Both in (Al x Co1−x )(acac)3 and (Ga x Co1−x )(acac)3, Co(acac)3 was more influential on diamagnetic muon yield than Al(acac)3 and Ga(acac)3. Zerofield muon spin relaxation rate suggests that the diamagnetic muon resides in the vicinity of Co(acac)3 molecules.

IR absorption measurements and new FIR emission lines in CH 3OH by use of a frequency-tunable CW waveguide CO 2 laser

The IR absorption in CH 3OH in the vicinity of CO 2 laser lines has been measured quantitatively by use of a 300 MHz tunable waveguide CO 2 laser with output powers of about 3 W. Information on frequency offsets from the CO 2 line centers, small signal and saturated absorption coefficients of FIR laser pump transitions is obtained. Some stronger pump transitions with frequency offsets larger than 50 MHz gave rise to the observation of 8 new FIR emission lines with wavelengths from 43 to 125 μm.