We report the first observation of the predissociative B state of a halocarbene molecule. Rovibronic energy levels were measured in the B(1A') state of CHF by fluorescence dip detected optical-optical double resonance spectroscopy via the A state. The origin was found to lie 30 817.4 cm-1 above the zero point level of the X state. Rotational transitions within six purely bending states, and sta...

the paper presents the results of an investigation on the acoustic performance of vertical profile parallel barriers with quadratic residue diffuser tops and faces. a 2d boundary element method (bem) is used to predict the barrier insertion loss. the results of rigid and with absorptive coverage are also calculated for comparisons. using qrd on the top surface and faces of all vertical profile ...

To further investigate the Renner–Teller (RT) effect and barriers to linearity and dissociation in the simplest singlet carbene, we recorded fluorescence excitation spectra of bands involving the pure bending levels 20 with n = 0–9 and the combination states 1 1 02 n 0 with n = 1–8 and 2 n 03 1 0 with n = 0–5 in the à A00 ’ X̃ A0 system of CDF, in addition to some weak hot bands. The spectra wer...

Abusive head trauma (AHT) is the leading cause of death from trauma in infants and young children. An AHT animal model was developed on 12-day-old mice subjected to 90° head extension-flexion sagittal shaking repeated 30, 60, 80 and 100 times. The mortality and time until return of consciousness were dependent on the number of repeats and severity of the injury. Following 60 episodes of repeate...

Molecular motors convert light and thermal energies into mechanical work, offering good opportunities to design novel molecular devices. Among them, alternate a photoisomerization helix inversion achieve unidirectional rotation. The rotational speed is limited by the step, which in turn governed barrier electronic ground state. In this we systematically study solvation effect on process of sele...

Using tunable far infrared laser absorption spectroscopy, 12 vibration-rotation-tunneling (VRT) subbands, consisting of approximately 230 transitions have been measured and analyzed for an 82.6 cm’ intermolecular vibration of the water dimer-d4 Each of the VRT subbands originate from Kg = 0 and terminate in either Ki = 0 or 1. These data provide a complete characterization of the tunneling dyna...

most common hypotheses of seizure initiation are increased neural excitation, decreased inhibition or both. but, the conditions that lead to these activation states not to be clear yet. recent studies challenge traditional concepts and indicate new evidence that a key epileptogenic process may actually begin in the blood vessel. seizures could be initiate by a variety of insults to the brain, s...

the paper presents the results of an investigation on the acoustic performance of vertical profile parallel barriers with quadratic residue diffuser tops and faces. a 2d boundary element method (bem) was used to predict the barrier insertion loss. the results of rigid and with absorptive coverage were also calculated for comparisons. using qrd on the top surface and faces of all vertical profil...

The molecular properties known to play an essential role in drug-receptor interaction of substructures models of bioactive molecules have been studied using chemical quantum calculations. 1,4-diformyl-piperazine and 1,4-dithionyl-piperazine have been used as models to probe conformational behaviors and some electronic properties of substructure of some tri-substituted piperazine showing dual an...