Effective Application of Microwave Resonant Cavity System to Flow Chemistry

By applying advanced telecommunication solid state devices to microwave (MW) resonant cavity system for flow chemistry, it becomes possible to heat up low polarity solvents higher than 250 C, that are considered impossible to heat up by MW until now. The resonant cavity system is opening new process windows to production processes of specialty chemicals which require low cost, high yield and high productivity.     

Classification of extremal contractions from smooth fourfolds of -type

We investigate divisorial contractions of extremal rays from
smooth fourfolds. When the exceptional divisor is contracted to a curve, we prove that the divisor is a -bundle or quadric bundle over a smooth curve and the contraction is the blowing up along the curve. Furthermore we determine the local analytic structure of the contraction.

     

Laser magnetic resonance for the v = 1 ← 0 transition of SeO (X3Σ−) by a CO2 laser

The vibration-rotation transitions for a fundamental band of SeO (X³Σ^?) were studied by means of the infrared laser magnetic resonance (LMR) method employing a CO₂ laser. The LMR spectra arising from five SeO isotopic species except ⁷⁴SeO were detected and analyzed. Band origins for these species were determined. Molecular parameters ω_e, ω_eχ_e, B_e, and α_e, were obtained with the aid of the reduced mass relations. For ⁷⁷SeO the axial component of magnetic hyperfine interaction was obtained.     

Determination of optical isomers for left-handed or right-handed chiral double-wall carbon nanotubes

The handedness relationship between adjacent layers in nested double-wall carbon nanotubes (DWNTs) has been investigated for the first time. Our high-resolution electron microscopy analysis on a series of specimen tilts can successfully tell the handedness of each constituent nanotube in a DWNT, and therefore the chiral indices (n, m) including their optical isomers [(n, m) or (m, n)] of inner and outer nanotubes can be uniquely determined. It is shown that right-handed and left-handed nanotubes are equally distributed for both the inner and outer nanotubes in the examined specimens and a preferable handedness relationship between the adjacent layers in DWNT may exist.