The photodynamics of individual molecules and fluorescent proteins has been investigated in real time. In the case of organic molecules, both the triplet state lifetime and intersystem crossing yield appear to vary in time and space. In the case of autofluorescent proteins, light-driven “on-off” fluorescence emission has been observed, with a behavior that is consistent with the existence of a ...

A retrospective study was carried out on a sample consisting of 89,491 deliveries occurred from 1979 through 1998, in the city of São Paulo, SP, Brazil. These deliveries included 935 twin and 26 triplet births. The mean incidence per 1,000 deliveries was estimated at 10.45 for twins (5.34 for dizygotic and 5.11 for monozygotic twins) and 0.29 for triplets. The average maternal age increased sig...

We study the Renormalization Group (RG) evolution of the couplings in a model with a real SU(2) triplet in the Higgs sector. Insisting that the model remain valid up to 1 TeV we show that it is possible for there to be no light Higgs bosons without any otherwise dramatic deviation from the physics of the Standard Model.

Photolysis of N-benzoyl-S,S-diphenylsulfilimine or N-benzoyl dibenzothiophene sulfilimine produces PhNCO and also benzoylnitrene. Direct observation of the triplet nitrene, energetic differences between the singlet and triplet state of the nitrene, and oxygen quenching experiments suggest that the triplet nitrene derives from the triplet excited state of the sulfilimine precursors, rather than ...

We study N = 1, 2, 4 higher spin superalgebras in four dimensions and higher spin gauge theories based on them. We extend the existing minimal N = 2, 4 theories and find a minimal N = 1 theory. Utilizing the basic structure of the minimalN = 8 theory, we express the full field equations for the N = 1, 2, 4 theories in a universal form without introducing Kleinian operators. We also use a non-mi...

Cross sections and thermally averaged excitation rate coefficients are presented for proton impact excitations of the 1s 2 2s2p 3 P fine-structure transitions in the Be-like ions C iii, N iv, and O v. The cross sections were calculated using a close-coupled impact parameter method that has been modified to include the higher lying levels of the triplet states of the 2p 2 , 2s3s, and 2s3d config...

Triplet Superconductivity and Crossed Andreev Reflection in Ferromagnet/Superconductor Heterostructures

Cyclooctatetraene (COT), the first 4nπ-electron system to be studied, adopts an inherently nonplanar tub-shaped geometry of D2d symmetry with alternating single and double bonds, and hence behaves as a nonaromatic polyene rather than an antiaromatic compound. Recently, however, considerable 8π-antiaromatic paratropicity has been shown to be generated in planar COT rings even with the bond alter...

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