@article {2692, title = {Complete transfer of populations from a single state to a preselected superposition of states using piecewise adiabatic passage: Experiment}, journal = {Physical Review A}, volume = {80}, number = {6}, year = {2009}, note = {ISI Document Delivery No.: 539DNTimes Cited: 4Cited Reference Count: 38Zhdanovich, S. Shapiro, E. A. Hepburn, J. W. Shapiro, M. Milner, V.}, month = {Dec}, pages = {8}, type = {Article}, abstract = {We demonstrate a method of adiabatic population transfer from a single quantum state into a coherent superposition of states. The transfer is executed with femtosecond pulses, spectrally shaped in a simple and intuitive manner, which does not require iterative feedback-controlled loops. In contrast to nonadiabatic methods of excitation, our approach is not sensitive to the exact value of laser intensity. We show that the population transfer is complete, and analyze the possibility of controlling the relative phases and amplitudes of the excited eigenstates. We discuss the limitations of the proposed control methods due to the dynamic level shifts and suggest ways of reducing their influence.}, keywords = {COHERENT CONTROL, EXCITATION, PULSES, QUANTUM CONTROL, time, WAVE-PACKETS, WAVEPACKET}, isbn = {1050-2947}, url = {://000273233800104}, author = {Zhdanovich, S. and Shapiro, E. A. and Hepburn, J. W. and Shapiro,Moshe and Milner, V.} } @article {744, title = {Assessing the effects of time and spatial averaging in N-15 chemical shift/N-15-H-1 dipolar correlation solid state NMR experiments}, journal = {Journal of Biomolecular Nmr}, volume = {26}, number = {4}, year = {2003}, note = {ISI Document Delivery No.: 686MATimes Cited: 30Cited Reference Count: 51}, month = {Aug}, pages = {283-295}, type = {Article}, abstract = {The effect of time and spatial averaging on N-15 chemical shift/H-1-N-15 dipolar correlation spectra, i.e., PISEMA spectra, of alpha-helical membrane peptides and proteins is investigated. Three types of motion are considered: (a) Librational motion of the peptide planes in the alpha-helix; (b) rotation of the helix about its long axis; and (c) wobble of the helix about a nominal tilt angle. A 2ns molecular dynamics simulation of helix D of bacteriorhodopsin is used to determine the effect of librational motion on the spectral parameters. For the time averaging, the rotation and wobble of this same helix are modelled by assuming either Gaussian motion about the respective angles or a uniform distribution of a given width. For the spatial averaging, regions of possible N-15 chemical shift/H-1-N-15 dipolar splittings are computed for a distribution of rotations and/or tilt angles of the helix. The computed spectra show that under certain motional modes the N-15 chemical shift/H-1-N-15 dipolar pairs for each of the residues do not form patterns which mimic helical wheel patterns. As a result, the unambiguous identification of helix tilt and helix rotation without any resonance assignments or on the basis of a single assignment may be difficult.}, keywords = {averaging, COAT PROTEIN, GRAMICIDIN CHANNEL, ION-CHANNEL, LIPID BILAYERS, MEMBRANE-PROTEIN STRUCTURE, mobility of membrane helices, MOLECULAR-DYNAMICS SIMULATION, mosaic spread, NUCLEAR-MAGNETIC-RESONANCE, PHOSPHOLIPID-BILAYER, PISA wheels, PISEMA, SPIN-EXCHANGE, time, TRANSMEMBRANE DOMAIN}, isbn = {0925-2738}, url = {://000183324500001}, author = {Straus, S. K. and Scott, W. R. P. and Watts, A.} } @article {4089, title = {Application of long-circulating liposomes to cancer photodynamic therapy}, journal = {Biological \& Pharmaceutical Bulletin}, volume = {20}, number = {6}, year = {1997}, note = {ISI Document Delivery No.: XG547Times Cited: 26Cited Reference Count: 30}, month = {Jun}, pages = {670-673}, type = {Article}, abstract = {Photodynamic therapy (PDT) as a cancer treatment is notable for its quite low side effects in comparison with those of chemotherapy and radiotherapy. However, the accumulation of porphyrin derivatives used in PDT into tumor tissues is rather low. Since long-circulating liposomes are known to accumulate passively into tumor tissues, we liposomalized a porphyrin derivative, benzoporphyrin derivative monoacid ring A (BPD-MA), and used these liposomes to investigate the usefulness of PDT for tumor-bearing mice. BPD-MA was liposomalized into glucuronate-modified liposomes, which are known to be long-circulating. These liposomes were injected i.v. into Balb/c mice bearing Meth A sarcoma, and tumor regression and survival time were monitored after irradiation with laser light. Tumor regression and complete curing of tumor (80\% cure rate by the treatment with 6 mg/kg BPD-R?IA) were observed when long circulating liposomalized BPD-MA was injected and laser-irradiated. In contrast, only a 20\% cure rate was obtained when the animals were treated with BPD-MA solution or BPD-MA entrapped in conventional liposomes. These results suggest that a long-circulating liposomal formulation of photo-sensitive agents is useful for PDT.}, keywords = {BEARING MICE, benzoporphyrin, BENZOPORPHYRIN DERIVATIVES, BPD, CELLS, DERIVATIVE, drug delivery system, EFFICACY, INVIVO, LIPOPROTEINS, liposome, MURINE TUMOR-MODEL, PHOTODYNAMIC THERAPY, PHOTOSENSITIZER, time}, isbn = {0918-6158}, url = {://A1997XG54700016}, author = {Oku, N. and Saito, N. and Namba, Y. and Tsukada, H. and Dolphin, D. and Okada, S.} } @article {3772, title = {Survival probability for the Yamaguchi potential}, journal = {Annals of Physics}, volume = {252}, number = {2}, year = {1996}, note = {ISI Document Delivery No.: VY568Times Cited: 14Cited Reference Count: 40}, month = {Dec}, pages = {336-356}, type = {Article}, abstract = {Different decay behaviours of the survival probability are examined. Technically, the survival probability of an arbitrary state psi is determined by the psi matrix element of the resolvent of the full Hamiltonian. The analytical properties of this matrix element can be analyzed in terms of the properties of the kernel of the Lippmann-Schwinger equation. For the Yamaguchi potential and several initial states, all functions are explicitly calculated. This approach allows the decomposition of the survival amplitude into a sum of decaying exponential terms and w-functions associated with the pole positions of the resolvent matrix element in the complex momentum plane. Novel decay behaviours are found for the decay of states associated with the resolvent poles and the decay of a state which is dominated by the form of the wave function rather than by the resolvent poles. Certain anomalous short time decay behaviour is also exemplified. (C) 1996 Academic Press, Inc.}, keywords = {EVOLUTION, EXPONENTIAL DECAY LAW, MOMENTUM REPRESENTATION, QUANTUM, resonant states, time}, isbn = {0003-4916}, url = {://A1996VY56800005}, author = {Muga, J. G. and Wei, G. W. and Snider, R. F.} } @article {7329, title = {TRANSMITTANCE FOR WAVE-PACKET SCATTERING}, journal = {Physical Review A}, volume = {46}, number = {9}, year = {1992}, note = {ISI Document Delivery No.: JX834Times Cited: 13Cited Reference Count: 12}, month = {Nov}, pages = {6075-6078}, type = {Note}, abstract = {Different expressions for the transmittance m wave-packet scattering in one dimension are examined. Special attention is paid to the difficulties when the initial packet rho(0) has negative momentum components. A general formula is provided for this case, and the domain of applicability of a simple approximate expression is indicated. A model calculation illustrates the results.}, keywords = {time}, isbn = {1050-2947}, url = {://A1992JX83400103}, author = {Muga, J. G. and Brouard, S. and Snider, R. F.} } @article {7041, title = {EPITHERMAL MUONIUM PROCESSES IN METHANE AND PROPANE GASES}, journal = {Journal of Physical Chemistry}, volume = {95}, number = {19}, year = {1991}, note = {ISI Document Delivery No.: GG383Times Cited: 7Cited Reference Count: 90}, month = {Sep}, pages = {7338-7344}, type = {Article}, abstract = {Gas-phase mu-SR studies of dense methane up to 10 mol L-1 and of propane at low densities, up to 0.2 mol L-1, are reported. It is found that the diamagnetic polarization, P(D), increases in both gases with pressure, with a related decrease seen in the muonium polarization, P(Mu). The initial increase seen in P(D) at low densities is attributed to hot-atom (Mu*) abstraction and substitution reactions. Comparisons with both hot-tritium (T*) and epithermal H* reactions in the alkanes reveal substantial isotope effects. In the case of CH4, a continued increase in P(D) at higher densities is likely due to a proton-transfer reaction from the molecular ion CH4Mu+ in the radiolysis track, forming CH3Mu, rather than to hot-atom reactions. Extrapolation of the present trend with density gives agreement with the value of P(D) found in liquid CH4, indicating that the diamagnetic muon polarization in dense alkanes depends primarily on density rather than on temperature or phase.}, keywords = {CHARGE-EXCHANGE, CHEMISTRY, HOT-ATOM REACTIONS, HYDROCARBONS, HYDROGEN-ATOMS, LIQUIDS, POSITRONIUM, REACTION PROBABILITIES, THRESHOLD ENERGY, time}, isbn = {0022-3654}, url = {://A1991GG38300043}, author = {Kempton, J. R. and Arseneau, D. J. and Fleming, Donald G. and Senba, M. and Gonzalez, A. C. and Pan, J. J. and Tempelmann, A. and Garner, D. M.} }