Moisture sorption studies have been carried out on 16 low moisture foodstuffs at 27°C and based on the major type of constituent, viz starch. fat, protein and high hygroscopicity. the isotherms have been divided into four groups. The moisture sorption behaviour over 0.060.92 water activity of the foods has indicated that the Brunauer-Emmett-Teller (BET) equation is applicable generally up to 0....

The concept of symmetry and its breaking holds a special and important place in the physical sciences. One of the best known examples of such symmetry breaking is the Jahn-Teller effect. In their original paper, Jahn and Teller demonstrated(Jahn & Teller 1937) that a symmetry-dictated electronic degeneracy will always be raised by a non-totally symmetric distortion linear in nuclear coordinates...

Perovskite oxides are already widely used in industry and have huge potential for novel device applications thanks to the rich physical behaviour displayed in these materials. The key to the functional electronic properties exhibited by perovskites is often the so-called Jahn-Teller distortion. For applications, an electrical control of the Jahn-Teller distortions, which is so far out of reach,...

Ultraviolet photoelectron spectra of CH3O , CH3CH2O , (CH3)2CHO , (CH3)3CO , as well as CD3O 2 and CD3CD2O 2 are presented, providing improved electron affinities and new information on vibronic coupling in the corresponding neutral radicals. Jahn-Teller vibronic transitions are assigned to e vibrational modes of X̃ E CH3O. The excitation energy of the à A8 state of CH3CH2O with respect to the X̃...

The T-noninvariant transverse polarization of neutrons is considered for muon capture by a 6 Li nucleus with decay into a quasistationary 2 + state of the three particle α + n + n continuum. This polarization is orthogonal to the plane spanned by the polarization axis of the initial mesic atom and the neutron momentum. The situation in which neutrons that are emitted in the plane orthogonal to ...

We present cross sections and asymmetry parameters for photoionization of the lt2 orbital of CH4 using static-exchange continuum orbitals of CH/ to represent the photoelectron wave function. The calculations are done in the fixed-nuclei approximation at a single internuclear geometry. To approximate the near-threshold behavior of these cross sections, we assumed that the photoelectron spectrum ...

The hu hole spectral intensity for C60 → C+60 molecular photoemission is calculated at finite temperature by a parameter-free Lanczos diagonalization of the electron-vibration Hamiltonian, including the full 8 Hg, 6 Gg , and 2 Ag mode couplings. The computed spectrum at 800 K is in striking agreement with gas-phase data. The energy separation of the first main shoulder from the main photoemissi...

We review the fundamentals of Jahn-Teller interactions and their field theoretical modelings and show that a 2+1 dimensional gauge theory where the gauge field couples to “flavored fermions” arises in a natural way from a two-band model describing the dynamical Jahn-Teller effect. The theory exhibits a second order phase transition to novel finite-temperature superconductivity.