Results 31 to 40 of about 2,373,079 (328)

Mix-and-diffuse serial synchrotron crystallography

IUCrJ, 2017
Unravelling the interaction of biological macromolecules with ligands and substrates at high spatial and temporal resolution remains a major challenge in structural biology.
Kenneth R. Beyerlein, Dennis Dierksmeyer, Valerio Mariani, Manuela Kuhn, Iosifina Sarrou, Angelica Ottaviano, Salah Awel, Juraj Knoska, Silje Fuglerud, Olof Jönsson, Stephan Stern, Max O. Wiedorn, Oleksandr Yefanov, Luigi Adriano, Richard Bean, Anja Burkhardt, Pontus Fischer, Michael Heymann, Daniel A. Horke, Katharina E. J. Jungnickel, Elena Kovaleva, Olga Lorbeer, Markus Metz, Jan Meyer, Andrew Morgan, Kanupriya Pande, Saravanan Panneerselvam, Carolin Seuring, Aleksandra Tolstikova, Julia Lieske, Steve Aplin, Manfred Roessle, Thomas A. White, Henry N. Chapman, Alke Meents, Dominik Oberthuer   +35 more
doaj   +1 more source

Ultraviolet relaxation dynamics in uracil: Time-resolved photoion yield studies using a laser-based thermal desorption source [PDF]

, 2018
Wavelength-dependent measurements of the RNA base uracil, undertaken with nanosecond ultraviolet laser pulses, have previously identified a fragment at m/z = 84 (corresponding to the C3H4N2O+ ion) at excitation wavelengths ≤232 nm.
Bockova, Jana, Crane, Stuart W., De Camillis, Simone, Eden, Samuel, Ghafur, Omair, Greenwood, Jason B., Rebelo, Andre, Ryszka, Michal, Saalbach, Lisa, Townsend, Dave   +9 more
core   +2 more sources

Time-Resolved Studies of Stick-Slip Friction in Sheared Granular Layers

, 1998
Sensitive and fast force measurements are performed on sheared granular layers undergoing stick-slip motion, along with simultaneous imaging. A full study has been done for spherical particles with a +-20% size distribution.
A. Bak, A. Demirel, A. Johansen, A. Kudrolli, B. E. Shaw, B. Miller, B. N. J. Persson, C. Daly, C. G. Sammis, C. H. Scholz, C. Marone, C.-h. Liu, D. Cule, D. G. Wang, D. M. Hanes, D. M. Tolstoi, D. R. Scott, E. Kumacheva, E. Rabinowicz, F. Heslot, F. Radjai, F.-J. Elmer, G. H. Ristow, H. Jaeger, H. M. Jaeger, J. A. C. Martins, J. M. Carlson, J. P. Gollub, J. R. Rice, K. Heki, L. M. Jones, M. G. Rozman, M. L. Gee, N. M. Beeler, O. Pouliquen, P. A. Thompson, P. A. Thompson, S. B. Savage, S. Nasuno, S. Nasuno, T. Baumberger, T. Baumberger, V. K. Horváth, Y. Zhang   +43 more
core   +2 more sources

Spin- and time-resolved photoemission studies of thin Co2FeSi Heusler alloy films

, 2006
We have studied the possibly half metallic Co2FeSi full Heusler alloy by means of spin- and time-resolved photoemission spectroscopy. For excitation, the second and fourth harmonic of femtosecond Ti:sapphire lasers were used, with photon energies of 3.1 ...
Aeschlimann, Aeschlimann, Attema, J.-P. Wüstenberg, Kandpal, Kolev, M. Aeschlimann, M. Bauer, M. Cinchetti, M. Sánchez Albaneda, Schmidt, Schneider, Wang, Wurmehl, Žutic   +14 more
core   +1 more source

Microcrystals in structural biology: small samples, big insights

IUCrJ
Microcrystals are transforming structural biology by enabling high-resolution structures and time-resolved insights from samples once deemed too small. This commentary highlights recent advances in microfocus X-ray and MicroED methods, emphasizing their ...
Dominik Oberthür
doaj   +1 more source

Probing the Superfluid to Mott Insulator Transition at the Single Atom Level [PDF]

, 2010
Quantum gases in optical lattices offer an opportunity to experimentally realize and explore condensed matter models in a clean, tunable system. We investigate the Bose-Hubbard model on a microscopic level using single atom-single lattice site imaging ...
Bakr, Waseem S., Foelling, Simon, Gillen, Jonathon I., Greiner, Markus, Ma, Ruichao, Peng, Amy, Pollet, Lode, Simon, Jonathan, Tai, M. Eric   +8 more
core   +2 more sources

Time-Resolved Studies of a Rolled-Up Semiconductor Microtube Laser

, 2009
We report on lasing in rolled-up microtube resonators. Time-resolved studies on these semiconductor lasers containing GaAs quantum wells as optical gain material reveal particularly fast turn-on-times and short pulse emissions above the threshold.
Fehringer, S., Heitmann, D., Heyn, Ch., Kipp, T., Korn, T., Sauer, M., Schüller, C., Stemmann, A., Strelow, Ch.   +8 more
core   +1 more source

Photophysical Studies of Poly(3,4-Ethylenedioxythiophene/Cucurbit[7]uril) Polypseudorotaxane and Polyrotaxane by Transient Absorption and Time-Resolved Fluorescence Spectroscopy

Engineering Proceedings, 2022
The UV-Vis absorption, fluorescence, and phosphorescence spectra of poly(3,4-ethylenedioxythiophene/cucurbit[7]uril), polypseudorotaxane (1), and polyrotaxane (2) in water and acetonitrile solutions were investigated. To achieve a deeper insight into the
Radu Ionut Tigoianu, Aurica Farcas
doaj   +1 more source

Time-resolved OSL studies on BeO ceramics

Radiation Measurements, 2013
Abstract Time-Resolved Optically Stimulated Luminescence (TR-OSL) from BeO ceramics was investigated using a blue laser (445 nm) as stimulation light source. It was observed that, at relatively low dose levels (up to ∼25 Gy) the TR-OSL decay curve can be approximated with a single exponential decay function with a lifetime of ∼26 μs at room ...
Bulur, E., Sarac, B. E.
openaire   +2 more sources

Novel laser gain and time-resolved FTIR studies of photochemistry [PDF]

, 1990
Several techniques are discussed which can be used to explore laboratory photochemical processes and kinetics relevant to planetary atmospheres; these include time-resolved laser gain-versus-absorption spectroscopy and time-resolved Fourier transform ...
Leone, Stephen R.
core   +1 more source