Search Results - (Author, Cooperation:M. Welling)

2018-06-02

The Society of Nuclear Medicine (SNM)

0022-3123

Medicine

2013-07-26

Nature Publishing Group (NPG)

0028-0836

1476-4687

Biology

Chemistry and Pharmacology

Medicine

Natural Sciences in General

Physics

Animals ; Binding Sites ; Cell Line ; Chromatin/*chemistry/genetics/*metabolism ; Chromatin Immunoprecipitation ; *Chromosome Positioning ; Embryonic Stem Cells/cytology/metabolism ; Enhancer Elements, Genetic ; Genome/*genetics ; Homeodomain Proteins/metabolism ; *Imaging, Three-Dimensional ; Induced Pluripotent Stem Cells/cytology/metabolism ; Mice ; Molecular Imaging ; Octamer Transcription Factor-3/metabolism ; Organ Specificity ; Pluripotent Stem Cells/*cytology/*metabolism ; Promoter Regions, Genetic ; SOXB1 Transcription Factors/metabolism

article

1983

Kind ; Schülerzeichnung ; Visuelle Wahrnehmung ; Unfallverhütung ; Verkehrserziehung ; Elternarbeit ; Ausstellung

Zeitschrift für Verkehrserziehung, Bd. 33 (1983) H. 1, S. 12-18, 0341-2334

0948-2210

German

1089-7623

AIP Digital Archive

Physics

Electrical Engineering, Measurement and Control Technology

A new imaging polarimeter for magneto-optical investigations is described. Improvements over conventional magneto-optics are: it (i) is insensitive to uneven illumination, (ii) determines also the sign of the magnetic field, and (iii) has significantly improved sensitivity at small magnetic fields. The typical root-mean-square (rms) noise level is 0.7 mT Hz−1/2 for a single pixel, corresponding to a polarization rotation of 0.03 deg Hz−1/2. With limited temporal and spatial averaging, the rms error in magnetization profiles can be reduced to 〈10 μT, corresponding to 4×10−4 deg. Time resolution is 12 frames per second. Demonstration of the performance of the polarimeter is given for measurements of the local field above superconductors and for measurements of the rotation angle of sugar dissolved in water. © 2001 American Institute of Physics.

Electronic Resource

1434-6036

Springer Online Journal Archives 1860-2000

Physics

Abstract. The presence of experimental noise may greatly reduce the accuracy of experimentally determined growth and roughness exponents, which characterize a growing self-affine interface. A separate determination of the experimental noise enables a straightforward correction, which we demonstrate on experiments on the roughening of magnetic flux profiles in the critical state of YBa2Cu3O7-x thin films. After noise correction, we find that the magnetic field profile is characterized by a roughness exponent $\alpha = 0.75(6)$ . The growth exponent of the profiles is $\beta = 0.7(1)$ .

Electronic Resource

1432-0649

PACS: 03.75.Fi; 05.30.Jp; 32.80.Pj

Springer Online Journal Archives 1860-2000

Physics

7 Li has been studied in a magnetically trapped gas. Many-body quantum theory predicts that the occupation number of the condensate is limited to about 1400 atoms because of the effectively attractive interactions between 7Li atoms. Using a versitile phase-contrast imaging technique, we experimentally observe the condensate number to be consistent with this limit. We discuss our measurements, the current theoretical understanding of BEC in a gas with attractive interactions, and future experiments we hope to perform.

Electronic Resource

1573-8248

Metarhizium anisopliae ; Metarhizium flavoviride ; morphology ; temperature ; Locusta migratoria ; Madagascar

Springer Online Journal Archives 1860-2000

Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition

Résumé Les auteurs ont étudié cinq souches deMetarhizium anisopliae et une souche deM. flavoviride isolées à Madagascar. Les blastospores de la seconde espèce apparaissent plus homogènes de taille que celles deM. anisopliae. Quatre des 5 souches de cette espèce peuvent croître à 36°C tandis que l'isolat deM. flavoviride se développe à 38°C (températures constantes). Cette souche ainsi que deux souches deM. anisopliae sont capables de croître à des températures de 40°C (pendant 8 h) alternant avec des températures de 25°C (pendant 16 h). Dans les essais d'infection de stades L3/L4 deLocusta migratoria à une température de 30°C (pendant 8 h) alternant avec une température de 25°C (pendant 16 h), les 4 souches deM. anisopliae et la souche deM. flavoviride ont toutes donné une mortalité de 50% en 5,9–8,5 jours. Dans le cas où la température est de 36° au lieu de 30°C (pendant 8 h), seule la souche deM. flavoviride et une souche deM. anisopliae isolée du sol ont donné des mortalités élevées.

Abstract Five strains ofMetarhizium anisopliae (Metsch.) Sorokin and one strain ofMetarhizium flavoviride Gams & Rozsypal originally isolated in Madagascar were studied. Measurements of conidia and, for the first time, also of blastospores produced in a liquid medium were used for species and variety determination. Blastospores ofM. flavoviride were more homogenous in their size than those ofM. anisopliae. Growth at high temperatures between 25° and 40°C showed that 4 isolates ofM. anisopliae grew at 36°C andM. flavoviride grew at 38°C. Using alternating day/night temperatures (8/16 h) the three strains tested could also tolerate 40°/25°C. In bioassays, fiveMetarhizium spp. isolates were tested against third and fourth instar larvae ofLocusta migratoria (L.) at two alternating day/night temperatures of 30°/25°C and 36°/25°C. In the cooler regime, all strains caused a mortality of 50% within 5.9 to 8.5 days (median lethal time), while in the 36°/25°C treatment only the thermophilicM. flavoviride and oneM. anisopliae strain isolated from a soil sample gave comparable results with median lethal times of 6.8 and 7.3 days, respectively.

Electronic Resource