Search Results - (Author, Cooperation:D. S. Weiss)
-
1Latest Papers from Table of Contents or Articles in PressR. Ravindran ; N. Khan ; H. I. Nakaya ; S. Li ; J. Loebbermann ; M. S. Maddur ; Y. Park ; D. P. Jones ; P. Chappert ; J. Davoust ; D. S. Weiss ; H. W. Virgin ; D. Ron ; B. Pulendran
American Association for the Advancement of Science (AAAS)
Published 2013Staff ViewPublication Date: 2013-12-07Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Animals ; *Antigen Presentation ; CD4-Positive T-Lymphocytes/immunology ; CD8-Positive T-Lymphocytes/immunology ; Cell Line ; Cricetinae ; Dendritic Cells/enzymology/*immunology ; Enzyme Activation ; Humans ; Mice ; Mice, Inbred C57BL ; Mice, Mutant Strains ; Microtubule-Associated Proteins/genetics ; Protein-Serine-Threonine Kinases/*biosynthesis/genetics ; Yellow Fever Vaccine/*immunologyPublished by: -
2Latest Papers from Table of Contents or Articles in PressT. R. Sampson ; S. D. Saroj ; A. C. Llewellyn ; Y. L. Tzeng ; D. S. Weiss
Nature Publishing Group (NPG)
Published 2013Staff ViewPublication Date: 2013-04-16Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: Animals ; Female ; Gammaproteobacteria/genetics/*immunology/metabolism/*pathogenicity ; Genes, Bacterial/genetics ; Host-Pathogen Interactions/immunology ; *Immune Evasion ; Immunity, Innate/*immunology ; Mice ; Mice, Inbred C57BL ; Phylogeny ; RNA, Bacterial/genetics/metabolism ; Time Factors ; Toll-Like Receptor 2/immunology/metabolism ; Virulence/geneticsPublished by: -
3Articles: DFG German National LicensesStaff View
ISSN: 1432-0649Keywords: 32.00 ; 35.00 ; 42.50Source: Springer Online Journal Archives 1860-2000Topics: PhysicsNotes: Abstract The recoil of an atom due to the absorption of up to 64 photons is measured, using laser-cooled cesium atoms which are made to interfere in an atomic fountain. Measurement of the photon recoil allows a determination of ℏ/m Cs, and hence the fine-structure constant. The measurement is described and a detailed theoretical and experimental study of potential systematic errors is presented. A relative precision in the photon recoil measurement of 0.1 ppm is obtained in two hours of data collection. The measurement is currently 0.85 ppm below the accepted value of ℏ/m Cs. We cannot now formally ascribe a systematic error, but suspect that the bulk of the discrepancy is due to imperfections of the interferometer beams used to induce the Raman transitions.Type of Medium: Electronic ResourceURL: -
4Articles: DFG German National LicensesStaff View
ISSN: 1432-1106Keywords: Nitrous oxide ; Visual cortical cells ; CatSource: Springer Online Journal Archives 1860-2000Topics: MedicineNotes: Summary The directional preferences, receptive field areas, peristimulus-time (PST) histograms and spontaneous activities of 112 feline visual cortical (area 18) cells were studied before, during, and after the administration of nitrous oxide. These cellular characteristics were altered by nitrous oxide inhalation; some quite substantially. The data indicate that the functional characteristics of cortical visual cells, such as the receptive field and the directional preference, are variable; and, among other factors, depend also on the anaesthetic administered to the animal.Type of Medium: Electronic ResourceURL: -
5Articles: DFG German National LicensesStaff View
ISSN: 1432-0770Source: Springer Online Journal Archives 1860-2000Topics: BiologyComputer SciencePhysicsNotes: Abstract Electrical activity of a population of visually responsive cells located in the vicinity of a single functionally defined neuron was recorded in the area 18 of the cat's cerebral cortex with a single tungsten microelectrode. The correlograms calculated from the mass activity record showed an existence of a rhythmic neuronal firing with an average interval near to 3 ms. When the system was activated by a visual stimulus, a line at an optimal angle moving in an optimal direction, the rhythmic activity became regular, acquiring an oscillatory sinusoidal character. This rhythmic pattern cannot be easily recognized when the activity of a single neuron is recorded. It is possible that such rhythmic activity involving large numbers of neurons contributes to the recognition of the velocity and position of the visual stimulus.Type of Medium: Electronic ResourceURL: -
6Articles: DFG German National LicensesStaff View
ISSN: 1432-0770Source: Springer Online Journal Archives 1860-2000Topics: BiologyComputer SciencePhysicsNotes: Abstract The receptive fields of “complex” neurons within area 18 of the cerebral cortex of the cat were determined by a computer-assisted method using a moving light bar substantially shorter than the long diameter of the receptive field as a visual stimulus. The visual cells repeatedly generated nerve impulses when the stimulus crossed well-defined “active points” within their receptive fields. Outside of these active points, the cells remained silent. It is suggested that the receptive fields are formed by a discontinuous accumulation of such active points. When the electrical activities of two neighbouring visual neurons are recorded simultaneously, their active points do not coincide. In addition, some active points were located outside the most prominent excitatory part of the receptive field of the studied cells. Individual visual cells typically differ in the number and distribution of active points. Since these cells best respond to a stimulus moving in a certain direction, it is suggested that they may act as direction of movement and/or velocity detectors. Alternate firing of a number of neighboring cells connected to a distributed pattern of peripheral receptors may form a system which is able to code for velocity and direction of the moving stimulus.Type of Medium: Electronic ResourceURL: -
7Articles: DFG German National LicensesStaff View
ISSN: 0030-493XKeywords: Chemistry ; Analytical Chemistry and SpectroscopySource: Wiley InterScience Backfile Collection 1832-2000Topics: Chemistry and PharmacologyNotes: The low resolution mass spectra of several di-, tri-and tetra-methylated cyclobutanones were determined at high and low ionizing voltages. The spectra are discussed in terms of the competition between loss of CO or loss of a ketene from the molecular ion of the cyclobutanone. The mass spectral results are correlated with the known photochemical behavior of the cyclobutanones and possible mechanistic implications are discussed.Additional Material: 4 Tab.Type of Medium: Electronic ResourceURL: