1,537 research outputs found
Mind the gap; the transition to hospital consultant
Scheele, F. [Promotor]Scherpbier, A.J.J.A. [Promotor]Teunissen, P.W. [Copromotor]Siegert, C.E.H. [Copromotor
F. Siegert. Drei hellenistisch-jüdische Predigten, I : Ubersetzung aus dem Armenischen und sprachliche Erläuterungen
Nautin Pierre. F. Siegert. Drei hellenistisch-jüdische Predigten, I : Ubersetzung aus dem Armenischen und sprachliche Erläuterungen. In: Revue de l'histoire des religions, tome 200, n°3, 1983. pp. 332-333
A gradient method for the quantitative analysis of cell movement and tissue flow and its application to the analysis of multicellular Dictyostelium development
We describe the application of a novel image processing method, which allows quantitative analysis of cell and tissue movement in a series of digitized video images. The result is a vector velocity field showing average direction and velocity of movement for every pixel in the frame. We apply this method to the analysis of cell movement during different stages of the Dictyostelium developmental cycle. We analysed time-lapse video recordings of cell movement in single cells, mounds and slugs. The program can correctly assess the speed and direction of movement of either unlabelled or labelled cells in a time series of video images depending on the illumination conditions. Our analysis of cell movement during multicellular development shows that the entire morphogenesis of Dictyostelium is characterized by rotational cell movement. The analysis of cell and tissue movement by the velocity field method should be applicable to the analysis of morphogenetic processes in other systems such as gastrulation and neurulation in vertebrate embryos
A revised inventory of Antarctic subglacial lakes
The locations and details of 145 Antarctic subglacial lakes are presented. The inventory is based on a former catalogue of lake-type features, which has been subsequently reanalysed, and on the results from three additional datasets. The first is from Italian radio-echo sounding (RES) of the Dome C region of East Antarctica, from which 14 new lakes are identified. These data also show that, in a number of occasions, multiple lake-type reflectors thought previously to be individual lakes are in fact reflections from the same relatively large lake. This reduces the former total of lake-type reflectors by six, but also adds a significant level of information to these particular lakes. The second dataset is from a Russian survey of the Dome A and Dome F regions of East Antarctica, which provides evidence of 18 new lakes and extends the coverage of the inventory considerably. The third dataset comprises three airborne RES surveys undertaken by the US in East Antarctica over the last five years, from which forty three new lakes have been identified. Reference to information on Lake Vostok, from Italian and US surveys taken in the last few years, is now included
[GDS-GESPERRT-NOCH] Physikalische Weltrekorde - Überschweres Platin und Gold aus der Darmstädter Elementenschmiede [Broschüre]
OnTEAM metadata: GDSID: DOC-2010-Jul-99; Attribute ID: LIBRARY-note-2010-098; Title: Physikalische Weltrekorde - Überschweres Platin und Gold aus der Darmstädter Elementenschmiede [Broschüre]; Author(s): Siegert, Günter; Corporate author(s): AGF; Publication date: 19950101; Creator: S.Sulzer; Creation date: 16.07.2010 11:21:06; Change date: 16.07.2010 11:21:06; Access: Welt; Attribute type: Text.Note; Directory path: ['GSI Publications', 'GSI as Publisher', 'Brochure']; Attribute path: ['Infrastructure', 'Library and Documentation', 'note', 'Added in 2010']; File name(s): ['DOC-2010-Jul-99-1.pdf']; File title(s): ['Broschüre']; File access: ['Welt'
Comment on "A numerical model for an alternative origin of lake vostok and its exobiological implications for Mars'' by N. S. Duxbury, I. A. Zotikov, K. H. Nealson, V. E. Romanovsky, and F. D. Carsey
Christoph Schlingensief's Modifications of Richard Wagner's Concepts of Opera
Knapp L. Christoph Schlingensief's Modifications of Richard Wagner's Concepts of Opera. In: Lehmann F, Siegert N, Vierke U, eds. Art of Wagnis. Christoph Schlingensief's Crossing of Wagner and Africa. Wien: Verlag für Moderne Kunst; 2017: 32-44
Observation of the Bloch-Siegert Shift in a Qubit-Oscillator System in the Ultrastrong Coupling Regime
We measure the dispersive energy-level shift of an LC resonator magnetically coupled to a superconducting qubit, which clearly shows that our system operates in the ultrastrong coupling regime. The large mutual kinetic inductance provides a coupling energy of ?0.82??GHz, requiring the addition of counter-rotating-wave terms in the description of the Jaynes-Cummings model. We find a 50 MHz Bloch-Siegert shift when the qubit is in its symmetry point, fully consistent with our analytical model.QN/Quantum NanoscienceApplied Science
Bloch–Siegert shift in application to the astrophysical determination of the fundamental constants variation
AbstractWe have evaluated the Bloch–Siegert shift for the different values of magnetic fieldʼs strengths defined at astrophysical conditions, i.e. when the stars with the strong surface magnetic fields are taken as a powerful pumping source of radiation. It is found that the additional shift of resonant frequency should be taken into account in the search for the time variation of the fundamental constants. The main conclusion is that the influence of the electromagnetic field should be considered carefully in each special case of the corresponding frequency determination
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