Search Results - (Author, Cooperation:D. Ackerman)
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1Latest Papers from Table of Contents or Articles in PressC. Burnett ; S. Valentini ; F. Cabreiro ; M. Goss ; M. Somogyvari ; M. D. Piper ; M. Hoddinott ; G. L. Sutphin ; V. Leko ; J. J. McElwee ; R. P. Vazquez-Manrique ; A. M. Orfila ; D. Ackerman ; C. Au ; G. Vinti ; M. Riesen ; K. Howard ; C. Neri ; A. Bedalov ; M. Kaeberlein ; C. Soti ; L. Partridge ; D. Gems
Nature Publishing Group (NPG)
Published 2011Staff ViewPublication Date: 2011-09-23Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: Aging/genetics/physiology ; Animals ; Animals, Genetically Modified ; Caenorhabditis elegans/genetics/metabolism/*physiology ; Caenorhabditis elegans Proteins/*genetics/metabolism ; Caloric Restriction ; Crosses, Genetic ; Drosophila Proteins/*genetics/metabolism ; Drosophila melanogaster/genetics/metabolism/*physiology ; Female ; Gene Expression ; Histone Deacetylases/*genetics/metabolism ; Longevity/genetics/*physiology ; Male ; RNA, Messenger/analysis/genetics ; Sirtuins/*genetics/metabolismPublished by: -
2Latest Papers from Table of Contents or Articles in PressPantel, A. R., Ackerman, D., Lee, S.-C., Mankoff, D. A., Gade, T. P.
The Society of Nuclear Medicine (SNM)
Published 2018Staff ViewPublication Date: 2018-09-05Publisher: The Society of Nuclear Medicine (SNM)Print ISSN: 0022-3123Topics: MedicinePublished by: -
3Articles: DFG German National LicensesAckerman, D. A. ; Dahbura, M. I. ; Shani, Y. ; Henry, C. H. ; Kistler, R. C. ; Kazarinov, R. F. ; Kuo, C. Y.
Woodbury, NY : American Institute of Physics (AIP)
Published 1991Staff ViewISSN: 1077-3118Source: AIP Digital ArchiveTopics: PhysicsNotes: Hybrid resonant optical reflector lasers of less than 1 cm length are described. These external cavity devices operate with very narrow linewidth approaching the resonator-loss-limited minimum. Best linewidth results are 7.1 kHz at 1.3 μm and 24 kHz at 1.55 μm.Type of Medium: Electronic ResourceURL: -
4Articles: DFG German National LicensesShani, Y. ; Henry, C. H. ; Kistler, R. C. ; Orlowsky, K. J. ; Ackerman, D. A.
Woodbury, NY : American Institute of Physics (AIP)
Published 1989Staff ViewISSN: 1077-3118Source: AIP Digital ArchiveTopics: PhysicsNotes: A Si3N4 core waveguide, matched to a laser mode, is adiabatically tapered into a SiO2:P core waveguide, matched to a fiber mode. When used to couple the light from a semiconductor laser into an optical fiber, a loss of 3.1 dB is obtained, compared to a loss of 4.5 dB obtained with a lensed fiber.Type of Medium: Electronic ResourceURL: -
5Articles: DFG German National LicensesAckerman, D. A. ; Morton, P. A. ; Shtengel, G. E. ; Hybertsen, M. S. ; Kazarinov, R. F. ; Tanbun-Ek, T. ; Logan, R. A.
Woodbury, NY : American Institute of Physics (AIP)
Published 1995Staff ViewISSN: 1077-3118Source: AIP Digital ArchiveTopics: PhysicsNotes: Temperature dependence of threshold in 1.3 μm semiconductor lasers is analyzed in terms of contributions due to gain, internal efficiency, internal loss, and nonradiative recombination. Rapid decrease of differential gain and roughly proportional increase in transparency carrier density are determined to dominate temperature dependence of threshold current. Auger recombination is found to play a secondary role in reducing T0 by compounding the effects of rapidly increasing threshold carrier density. © 1995 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
6Articles: DFG German National LicensesShtengel, G. E. ; Ackerman, D. A. ; Morton, P. A. ; Flynn, E. J. ; Hybertsen, M. S.
Woodbury, NY : American Institute of Physics (AIP)
Published 1995Staff ViewISSN: 1077-3118Source: AIP Digital ArchiveTopics: PhysicsNotes: Differential carrier lifetime as a function of subthreshold bias current in 1.3 m bulk active lasers is obtained by measurement of small-signal modulation of amplified spontaneous emission together with careful characterization of frequency- and current-dependent device impedance. The strong influence of rapidly varying device impedance upon these measurements is illustrated. In contrast to other studies, neither saturation of differential lifetime at low currents nor linear dependence of spontaneous emission on carrier density is observed. Recombination parameters, fit from current versus carrier density, along with consistent fits of spontaneous emission versus carrier density, are presented. © 1995 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
7Articles: DFG German National LicensesStaff View
ISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] Semen was taken from three donors selected on the basis of hair colour to increase the likelihood that they would vary in pigment genotype. Spermatozoa were separated from seminal plasma, washed in 0-9 per cent NaCl, and resuspended in Mann's Ringer solution2. Glycerol was added to a sample of each ...Type of Medium: Electronic ResourceURL: -
8Articles: DFG German National LicensesStaff View
ISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] If this polymorphism were balanced, at least in part, by gametic selection, the mode of selection might be changed and the balance altered by subjecting the sperm to ultralow temperatures before insemination. These experiments were intended to demonstrate whether differential metabolic function by ...Type of Medium: Electronic ResourceURL: -
9Articles: DFG German National LicensesStaff View
ISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] Antibodies of the ABO system can affect the metabolism of human spermatozoa. The main effect is that the anaerobic glycolysis of sperm from men with A or AB secretor phenotypes is lowered in anti-A or anti-B antisera. Respiration, on the other hand, is ...Type of Medium: Electronic ResourceURL: -
10Articles: DFG German National LicensesJordan, L. ; Eckmann, J. R. ; Lepape, A. ; Lou, C. ; Paneth, F. ; Peters, K. ; Juliard, A. ; Silberschatz, S. ; Egorow, M. S. ; Menzel, H. ; Kretzschmar, W. ; Winkler, Cl. ; Dietz, R. ; Mc Kay, R. J. ; Ackerman, D. E. ; Thomas, M. D. ; Cross, R. J. ; Abersold, J. N. ; Kohn-Abrest, E. ; Edell, G. M. ; Nikolski, S. ; Mc Haffie, J. R. ; Broom, W. E. J. ; Ott, E. ; Bahr, H. A.
Springer
Published 1930Staff ViewISSN: 1618-2650Source: Springer Online Journal Archives 1860-2000Topics: Chemistry and PharmacologyType of Medium: Electronic ResourceURL: