We propose a technique for performing view-dependent simpli cations for level-of-detail-based renderings of complex models. Our method is based on exploiting frame-to-frame coherence and is tolerant of various commonly found degeneracies in real-life polygonal models. The algorithm proceeds by preprocessing the input dataset into a binary tree of vertex collapses. This tree is used at run time ...

In-situ ESR/UV-vis-NIR spectroelectrochemistry was implemented to probe the spin state of the radical cation of a non-IPR cluster-fullerene Sc(3)N@C(68), which represents the first study on the stable paramagnetic cation of an endohedral fullerene.

Augmin-ting the central spindle T he augmin complex generates new micro-tubules in anaphase to build the central spindle and complete cytokinesis, Uehara and Goshima report. The central spindle forms between segregating chromosomes in anaphase and is required for the subsequent cleavage of cells into two daughters. Whether this structure is formed purely by microtubules recycled from the metaph...

Excitonic effects underpin the fascinating optoelectronic properties of 2D perovskites that are highly favorable for photovoltaics and light-emitting devices. Analogous to switching in transistors, manipulating these excitonic using coherent phonons could unlock new applications. Presently, a detailed understanding this underlying mechanism remains modest. Herein, origins carrier-phonon couplin...

outbreak of extended-spectrum beta-lacta-mase (ESBL)–producing Shigella sonnei at a day care nursery in Sakai City, 2006.tre study of Shigella diarrhoea in six Asian countries: disease burden, clinical manifestations, and microbiology.ing picture of shigellosis in southern Vietnam: shifting species dominance, an-timicrobial susceptibility and clinical presentation. profi les and growing fl uoro...

At some time almost 4 billion years ago, nature likely was faced with a chemical dilemma. Nucleic acids had emerged as replicable information carriers and primitive catalysts (Joyce 2002), yet their functional potential was constrained by their structural homogeneity and lack of reactive groups. These properties rendered nucleic acids well suited for storing information, but fl awed for mediati...

we propose a scheme for localizing an atom in a four-level configuration inside a classical standing wave field, conditioned upon the measurement of frequency of a weak probe field. in the classical standing wave field, the interaction between the atom and the field is position dependent due to the rabi-frequency of the driving field. hence, as the absorption frequency of the probe field is mea...

Photoinduced electron transfer and geminate recombination are studied for the systems rhodamine 3B (R3B(+)) and rhodamine 6G (R6G(+)), which are cations, in neat neutral N,N-dimethylaniline (DMA). Following photoexcitation of R3B(+) or R6G(+) (abbreviated as R(+)), an electron is transferred from DMA to give the neutral radical R and the cation DMA(+). Because the DMA hole acceptor is the neat ...

A series of alkali metal cerium diphenylhydrazido complexes, Mx(py)y[Ce(PhNNPh)4], M 1⁄4 Li, Na, and K, x 1⁄4 4 (Li and Na) or 5 (K), and y1⁄4 4 (Li), 8 (Na), or 7 (K), were synthesized to probe how a secondary coordination sphere would modulate electronic structures at a cerium cation. The resulting electronic structures of the heterobimetallic cerium diphenylhydrazido complexes were found to ...

Alkali and alkaline earth metals hydrogen sulfate catalyzed the one-pot three component condensation reactions of aldehydes, 1,3-dicarbonyl compounds and urea or thiourea under solvent-free conditions leading to 3,4-dihydropyrimidin-2(1H)-ones in high yields at 80 °C. Our results showed that Biginelli reaction not only is pH dependent, but the cation of catalyst plays an importan...