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Showing 1 to 12 of 187 entries
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Mega-electron-volt ultrafast electron diffraction at SLAC National Accelerator Laboratory.

The Review of scientific instruments

Weathersby SP, Brown G, Centurion M, Chase TF, Coffee R, Corbett J, Eichner JP, Frisch JC, Fry AR, Gühr M, Hartmann N, Hast C, Hettel R, Jobe RK, Jongewaard EN, Lewandowski JR, Li RK, Lindenberg AM, Makasyuk I, May JE, McCormick D, Nguyen MN, Reid AH, Shen X, Sokolowski-Tinten K, Vecchione T, Vetter SL, Wu J, Yang J, Dürr HA, Wang XJ.
PMID: 26233391
Rev Sci Instrum. 2015 Jul;86(7):073702. doi: 10.1063/1.4926994.

Ultrafast electron probes are powerful tools, complementary to x-ray free-electron lasers, used to study structural dynamics in material, chemical, and biological sciences. High brightness, relativistic electron beams with femtosecond pulse duration can resolve details of the dynamic processes on...

Are intramolecular frustrated Lewis pairs also intramolecular catalysts? A theoretical study on H2 activation.

Physical chemistry chemical physics : PCCP

Zeonjuk LL, St Petkov P, Heine T, Röschenthaler GV, Eicher J, Vankova N.
PMID: 25812167
Phys Chem Chem Phys. 2015 Apr 28;17(16):10687-98. doi: 10.1039/c5cp00368g.

We investigate computationally a series of intramolecular frustrated Lewis pairs (FLPs), with the general formula Mes2PCHRCH2B(C6F5)2, that are known from the literature to either activate molecular hydrogen (FLPs with R = H (1) or Me (4)), or remain inert...

Pathogenesis of various forms of infection in artificial hearts.

Pathophysiology : the official journal of the International Society for Pathophysiology

Dobsák P, Vasků J, Janci;k J, Eicher JC, Wotke J.
PMID: 14567932
Pathophysiology. 2003 May;9(3):161-178. doi: 10.1016/s0928-4680(02)00082-2.

Implanted biomaterials are often inevitably attacked by the bacterial infection. So far this problem has not been sufficiently explained and solved. It represents an 'evergreen' in the artificial heart research. Infection of biomaterials is a completely new clinical entity...

High-velocity pulsars in the galactic halo.

Science (New York, N.Y.)

Eichler D, Silk J.
PMID: 17789636
Science. 1992 Aug 14;257(5072):937-42. doi: 10.1126/science.257.5072.937.

It is proposed that high-velocity pulsars are produced in extended galactic halos, and possibly in extragalactic space, from primordial (population III) stars. Such a population of neutron stars could provide an explanation for the gamma-ray bursters and would then...

Holographic quantum eraser experiment reveals polarization structure of depolarized light.

Applied optics

Ackermann GK, Eichler J.
PMID: 18936815
Appl Opt. 2008 Oct 20;47(30):5660-7. doi: 10.1364/ao.47.005660.

It is shown that a holographic setup for real-time interferometry can be used to realize a quantum eraser (QE) experiment. Circular polarized light is used to distinguish between the photons of the reconstructed image of the object and the...

Efficient electron heating in relativistic shocks and gamma-ray-burst afterglow.

Physical review. E, Statistical, nonlinear, and soft matter physics

Gedalin M, Balikhin MA, Eichler D.
PMID: 18352129
Phys Rev E Stat Nonlin Soft Matter Phys. 2008 Feb;77(2):026403. doi: 10.1103/PhysRevE.77.026403. Epub 2008 Feb 07.

Electrons in shocks are efficiently energized due to the cross-shock potential, which develops because of differential deflection of electrons and ions by the magnetic field in the shock front. The electron energization is necessarily accompanied by scattering and thermalization....

Group psychotherapy with adolescents.

California medicine

Teicher JD.
PMID: 18730009
Calif Med. 1966 Jul;105(1):18-21.

In working in a large general hospital with groups of disturbed adolescent patients from economically and emotionally deprived walks of life, therapists worked out a plan of outpatient group therapy that in general has had good results as measured...

An expanding radio nebula produced by a giant flare from the magnetar SGR 1806-20.

Nature

Gaensler BM, Kouveliotou C, Gelfand JD, Taylor GB, Eichler D, Wijers RA, Granot J, Ramirez-Ruiz E, Lyubarsky YE, Hunstead RW, Campbell-Wilson D, van der Horst AJ, McLaughlin MA, Fender RP, Garrett MA, Newton-McGee KJ, Palmer DM, Gehrels N, Woods PM.
PMID: 15858566
Nature. 2005 Apr 28;434(7037):1104-6. doi: 10.1038/nature03498.

Soft gamma-ray repeaters (SGRs) are 'magnetars', a small class of slowly spinning neutron stars with extreme surface magnetic fields, B approximately 10(15) gauss (refs 1 , 2 -3). On 27 December 2004, a giant flare was detected from the...

A giant gamma-ray flare from the magnetar SGR 1806-20.

Nature

Palmer DM, Barthelmy S, Gehrels N, Kippen RM, Cayton T, Kouveliotou C, Eichler D, Wijers RA, Woods PM, Granot J, Lyubarsky YE, Ramirez-Ruiz E, Barbier L, Chester M, Cummings J, Fenimore EE, Finger MH, Gaensler BM, Hullinger D, Krimm H, Markwardt CB, Nousek JA, Parsons A, Patel S, Sakamoto T, Sato G, Suzuki M, Tueller J.
PMID: 15858567
Nature. 2005 Apr 28;434(7037):1107-9. doi: 10.1038/nature03525.

Two classes of rotating neutron stars-soft gamma-ray repeaters (SGRs) and anomalous X-ray pulsars-are magnetars, whose X-ray emission is powered by a very strong magnetic field (B approximately 10(15) G). SGRs occasionally become 'active', producing many short X-ray bursts. Extremely...

Synthesis and characterization of imidocubanes with exocube Ge(IV) and Sn(IV) substituents: [M(mu3-NGeMe3)]4 (M = Sn, Ge, Pb); [Sn(mu3-NSnMe3)]4.

Inorganic chemistry

Eichler JF, Just O, Rees WS.
PMID: 16903726
Inorg Chem. 2006 Aug 21;45(17):6706-12. doi: 10.1021/ic060331y.

The heteroleptic lithium amide, [(Me3Sn)(Me3Ge)NLi.(Et2O)]2 (2), reacts with MCl(2) (M = Sn, Ge, Pb) to yield the corresponding cubane complexes [M(mu3-NGeMe3)]4 [M = Sn (3), Ge (4), Pb (5)]. In an analogous reaction with SnCl2, the lithium stannylamide, [(Me3Sn)2NLi.(Et2O)]2...

Statistics of return intervals in long-term correlated records.

Physical review. E, Statistical, nonlinear, and soft matter physics

Eichner JF, Kantelhardt JW, Bunde A, Havlin S.
PMID: 17358131
Phys Rev E Stat Nonlin Soft Matter Phys. 2007 Jan;75(1):011128. doi: 10.1103/PhysRevE.75.011128. Epub 2007 Jan 26.

We consider long-term correlated data with several distribution densities (Gaussian, exponential, power law, and log normal) and various correlation exponents gamma (0

Increasing the efficiency of the ring-opening reaction of photochromic indolylfulgides by optical pre-excitation.

Chemical physics letters

Brust T, Draxler S, Eicher J, Lees WJ, Rück-Braun K, Zinth W, Braun M.
PMID: 20514344
Chem Phys Lett. 2010 Apr 09;489(4):175-180. doi: 10.1016/j.cplett.2010.02.071.

For three indolylfulgides the quantum efficiency of the ring-opening reaction upon pre-excitation is investigated in a multipulse experiment. The quantum efficiency grows by factor of up to 3.4, when the pre-excitation pulse immediately precedes the excitation process. The change...

Showing 1 to 12 of 187 entries