The formation of neutral I2 by the photodissociation of the methyl iodide dimer, (CH3I)2, excited within the A band at 249.5 nm is evaluated using velocity map imaging. In previous work [J. Chem. Phys. 122, 204301 (2005)], we showed that the formation of I2+ from photodissociation of the methyl iodide dimer takes place via ionic channels (through the formation of (CH3I)2+). It is thus not possi...

Previous studies have demonstrated that mutations of highly conserved residues in the alpha subunit of Gs (alpha s) can inhibit either the intrinsic GTPase activity (glutamine-227 to leucine, Q227L) or the ability of the protein to be activated by GTP (glycine-226 to alanine, G226A). We stably transfected NIH 3T3 cells with cDNAs encoding Gi2 alpha subunit (alpha i2) containing either wild-type...

We report product distributions from the photodissociation of I2(OCS)n (n ) 1-26) cluster ions at 790 and 395 nm and discuss implications concerning the structure of these clusters. The experimental results are paralleled by a theoretical investigation of I2(OCS)n structures. The 790 and 395 nm transitions in I2 access dissociative excited states that correlate with the I+ I(P3/2) and I+ I*(P1/...

Introducing multi-resonator microstructure into phononic metamaterials provides more flexibility in bandgap manipulation. In this work, 3D-acoustic of the body- and face-centered cubic lattice systems encompassing nodal isotropic multivibrators are investigated. Our main results are: (1) number bandgaps equals number, n, internal masses as each is a result classical analog quantum level-repulsi...

Selective visual attention enables organisms to enhance the representation of behaviorally relevant stimuli by altering the encoding properties of single receptive fields (RFs). Yet we know little about how the attentional modulations of single RFs contribute to the encoding of an entire visual scene. Addressing this issue requires (1) measuring a group of RFs that tile a continuous portion of ...

For any double lacunary sequence θrs = {(kr, ls)} and an admissible ideal I2 ⊆ P(N×N), the aim of present work is to define the concepts of Nθrs(I2)− and Sθrs(I2)−convergence for double sequence of numbers. We also present some inclusion relations between these notions and prove that Sθrs(I2)∩`∞ and S2(I2)∩ `∞ are closed subsets of `∞, the space of all bounded double sequences of numbers.

We report time-resolved photodissociation and geminate recombination dynamics of I2 2 in size-selected I2 Arn and I2 ~CO2!n cluster ions by using ultrafast pump–probe techniques at 790 nm in conjunction with a tandem time-of-flight mass spectrometer. The absorption recovery, which reflects the time scale for photodissociation followed by recombination and vibrational relaxation of I2 2 inside t...

The X̃ Su 1 state of the I2 2 anion has been fit to a Morse potential using data from two techniques: conventional and femtosecond photoelectron spectroscopy ~FPES!. Conventional photoelectron spectroscopy is used to determine the adiabatic electron affinity of I2 as well as the well depth and equilibrium nuclear geometry of I2 . In the FPES experiment, the pump pulse induces coherent nuclear mo...