We present here a detailed conformational analysis of menthyl acetate, one the constituents peppermint oil. Two conformers acetate were observed in broadband rotational spectrum 2–12 GHz frequency range. The structure lowest energy conformer was obtained from experiment based on assignment singly-substituted 13C-isotopologues. Additionally, internal dynamics methyl top acetyl side group charact...

A new in vivo animal model that produces diffuse brain injuries in sagittal plane rearward rotational acceleration has been developed. In this model, the skull of an anesthetized adult rat is tightly secured to a rotating bar. During trauma, the bar is impacted by a striker that causes the bar and the animal head to rotate rearward; the acceleration phase last 0.4 ms and is followed by a rotati...

We have performed quantum mechanical (QM) dynamics calculations within the independent-state approximation with new benchmark triplet A" and A' surfaces [B. Ramachandran et al., J. Chem. Phys. 119, 9590 (2003)] for the rovibronic state-to-state measurements of the reaction O(3P)+HCl(v=2,j=1,6,9)-->OH(v'j')+Cl(2P) [Zhang et al., J. Chem. Phys. 94, 2704 (1991)]. The QM and experimental rotational...

Rotational-tunneling spectra for Ar– (H2O)2 and Ar– (D2O)2 have been observed with the Balle– Flygare Fourier transform microwave spectrometer. The tunneling levels of the trimer appear to correlate with those of the water dimer. The ‘‘a’’ dipole transitions from the A1 1 and E states of Ar– (H2O)2 and A1 1 , B1 1 , and E states of Ar– (D2O)2 could be fit to a semirigid rotor Watson Hamiltonian...

The significance of the seismic rotational components have been overlooked in the seismic evaluation of structural behavior. As researchers have measured seismic components more accurately using sensitive rotational velocity sensor, it was observed that the magnitude of rotational components is considerable and could not be neglected. Hence, some parts of seismic damage or failure of structures...

Excitation of tert-butylnitrite into the first and second UV absorption bands leads to efficient dissociation into the fragment radicals NO and tert-butoxy in their electronic ground states P and E, respectively. Velocity distributions and angular anisotropies for the NO fragment in several hundred rotational and vibrational quantum states were obtained by velocity-map imaging and the recently ...

background: psychological and behavioral domains are important in coping with type ii diabetes. this study was conducted to assess supportive and coping obstacles in living with type ii diabetes among patients who visited hospitals affiliated to tehran university of medical sciences (tums). methods: this was a cross-sectional study with 600 subjects who participated in the study. data collectio...

Although the principle of using x-rays for diagnostic imaging has been known for a long time, there is still a lot of research and improvements going on in the field. One recent addition to the neuro-vascular imaging system—used for visualizing blood vessels in the brain and guidance of interventions—is 3D rotational angiography (3D-RA). Using 3D-RA, it is possible to view the vessel tree in 3D...

Rovibrational structures of methylamines (CH3NH2 and CH3ND2) in predissociative à states (3s – n) are investigated using ~111! resonant-enhanced two-photon ionization ~R2PI! spectroscopy. A part of experimental results was briefly reported earlier @J. Chem. Phys. 117, 10057 ~2002!#, and full detailed results and analyses are given here. Spectral origins are determined to be 41 669 and 42 038 cm...