The electron attachment properties of cyanoacetylene HCCCN are investigated with particular emphasis on the coupling between dipole-bound and valence states. As an initial step both the dipole-bound and the valence state of HCCCN− are studied separately using high level ab initio methods. Predictions for the geometry of the valence anion, the electron binding energy of the dipole-bound state, t...

We have characterized the structure of transcriptionally active nucleosome subunits using electron spectroscopic imaging. Individual nucleosomes were analyzed in terms of total mass, DNA and protein content, while the ensemble of images of active nucleosomes was used to calculate a three-dimensional reconstruction. Transcriptionally active nucleosomes were separated from inactive nucleosomes by...

We report the photoelectron spectra of small IBr-(CO2)n cluster anions (n=0-3). The vibrational state-resolved spectrum of IBr- permits reliable identification of the origins of the excited A' 3Pi2 and A 3Pi1 states of neutral IBr through a high-quality Franck-Condon spectral simulation. As a result, we directly determine several important spectroscopic parameters: the adiabatic electron affini...

We have developed a defined system to characterize the role of SR proteins and exonic enhancers in directly promoting splice-site interactions across an intron. Using RNA affinity chromatography, we find that SR proteins alone are sufficient to promote the specific association of the enhancer-containing exon 5 with the adjoining exon 6 from avian cardiac troponin-T. Direct visualization of this...

the binding, release and oxidation of oxygen occur at the heme group iron ion. hemoglobinoxidation-reduction studies have been previously performed using spectroelectrochemistry (sec) andhave provided insight into the hemoglobin electron transfer process and more specifically, into theheme group electronic factor and subunit interaction influences. in this study, the number of fullerenecarbon a...

Iron-pyrene cluster anions, [Fe(m)(pyrene)(n)](-) (m = 1-2, n = 1-2) were studied in the gas phase by photoelectron spectroscopy, resulting in the determination of their electron affinity and vertical detachment energy values. Density functional theory calculations were also conducted, providing the structures and spin multiplicities of the neutral clusters and their anions as well as their res...

abstract background: accurate methods of radiation therapy dose calculation. there are different monte carlo codesfor simulation of photons, electrons and the coupled transport of electrons and photons. mcnpis a general purpose monte carlo code that can be used for electron, photon and coupledphoton-electron transport.monte carlo simulation of radiation transport is considered to be one of the ...

in this investigation, ag@tio2 nanocomposite was prepared by deposition of silver nanoclusters onto commercial tio2 nanoparticles (known as p25 tio2) via photodeposition technique as clean and simple photochemical route. the synthesized ag@tio2 nanocomposite was utilized in the fabrication of dye-sensitized solar cell (dssc) chiefly because, compared to pure tio2, the electron affinity of ag@ti...

As cancer is the top killer diseases in the world, the scientists and researchers have been searching the new drugs and remedy methods. Most of the anticancer drugs are organic compounds which were approved by the FDA while metallodrugs are very rare. In the present time, some palladium and rhodium complexes are going to use as anticancer molecules. The palladium (II) complex has higher antican...