156,230 Works

Binary Data (NMC_92wt_600bar)

Martin Ebner
Project "X-ray Tomography of Porous, Transition Metal Oxide Based Lithium Ion Battery Electrodes"

Light Scattering Microscopy for Tumor Cell Recognition

Richter, V.; Institut Für Angewandte Forschung, Hochschule Aalen, Beethovenstr. 1, 73430 Aalen, Germany & Schneckenburger, H.; Institut Für Angewandte Forschung, Hochschule Aalen, Beethovenstr. 1, 73430 Aalen, Germany
Light scattering microscopy is suggested to providesome insight into cell architecture and to giveinformation on cell malignancy or morphologicalchanges upon necrosis or apoptosis. In the presentpaper a microscope setup for scattering experimentswith high angular resolution is reported, and firstdata obtained from test models (polystyrene beads),cell monolayers and 3-dimensional cell spheroidsare reported. Data are compared with simulationsbased on Mie scattering and discussed in view oftheir possible use for tumor cell recognition withintissue samples. The discussion includes...

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Progress in the fabrication of rare earth doped optical fiber by standard and Sol-Gel derived granulated oxides

Etissa, D.; Institute Of Applied Physics, University Of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland, Ryser, M.; Institute Of Applied Physics, University Of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland, Pilz, S.; Bern University Of Applied Sciences, ALPS, Pestalozzistrasse 20, CH-3400 Burgdorf, Switzerland & Romano, V.; Institute Of Applied Physics, University Of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland Bern University Of Applied Sciences, ALPS, Pestalozzistrasse 20, CH-3400 Burgdorf, Switzerland
We produced active optical fibers by the doped granulate silica-method. The granulates were derived from the sol-gel technology. We determined volume percentage and distribution of chemical elements in the fabricated glasses fiber by the analytical technique of Energy-Dispersive X-ray (EDX), Scanning Electron Microscopy (SEM), Electron Probe Microanalysis (EPMA) and the degree of crystallization by X-Ray Diffraction analysis (XRD). Furthermore we measured fluctuations of the Refractive Index Profile (RIP) and scattering losses of the fiber core....

Bevölkerungs - Zu - und Abnahme in Berlin und den nächstgelegenen Vororten [1]

Straube, Jul. (D'après); Keller, C. L. (Lith.); Springer, Julius (Ed.)
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Nanostructure Formation of the Solid Surface under the Action of Intense Laser Radiation

Urlichich, Yu.M.; Joint Stock Company "Russian Space Systems",53, Aviamotornaya St., Moscow 111250, Russia, Shmakov, V.A.; A.M. Prokhorov General Physics Institute RAS, 38, Vavilov St., Moscow 119991, Russia, Mikolutskiy, S.I.; Institute For Electrophysics And Electric Power RAS, 18, Dvorzovaya Nab., Sankt-Peterburg 191186, Russia & Khomich, V.Yu.; Institute For Electrophysics And Electric Power RAS, 18, Dvorzovaya Nab., Sankt-Peterburg 191186, Russia
The paper describes the mechanism for formationof periodic nanostructures on the surface of solidsunder the action of intense laser radiation. Themodel based on a nonlinear relaxation oftemperature-induced stresses. The solid deformedby laser radiation is considered in a form of threesimultaneously coexisting phases. The system ofequations, which describes these phases, is reducedto the generalized Ginzburg–Landau equation thathas a periodic solution. For estimation thecalculation of the step of the periodic structurearising on the silicon surface under the...

Measuring Optical Properties On Rough And Liquid Metal Surfaces

Neuenschwander, B.; Institute For Applied Laser, Photonics And Surface Technologies ALPS, Bern University Of Applied Sciences, Pestalozzistrasse 20, 3400 Burgdorf, Switzerland, Schmid, M.; Institute For Applied Laser, Photonics And Surface Technologies ALPS, Bern University Of Applied Sciences, Pestalozzistrasse 20, 3400 Burgdorf, Switzerland, Zehnder, S.; Institute For Applied Laser, Photonics And Surface Technologies ALPS, Bern University Of Applied Sciences, Pestalozzistrasse 20, 3400 Burgdorf, Switzerland, Schwaller, P.; Institute For Applied Laser, Photonics And Surface Technologies ALPS, Bern University Of Applied Sciences, Pestalozzistrasse 20, 3400 Burgdorf, Switzerland, Held, M.; Institute For Applied Laser, Photonics And Surface Technologies ALPS, Bern University Of Applied Sciences, Pestalozzistrasse 20, 3400 Burgdorf, Switzerland, Hunziker, U.; Institute For Applied Laser, Photonics And Surface Technologies ALPS, Bern University Of Applied Sciences, Pestalozzistrasse 20, 3400 Burgdorf, Switzerland & Zürcher, J.; Institute For Applied Laser, Photonics And Surface Technologies ALPS, Bern University Of Applied Sciences, Pestalozzistrasse 20, 3400 Burgdorf, Switzerland
For understanding and optimizing laser processing of metals and alloys the optical properties, especially the absorption of the work piece in function of the temperature up to the liquid phase have to be known [1]. There are several approaches to extend the Drude-Model [2] for optical properties of metal to temperature dependence [3, 4, 5]. However, a verification of these models is difficult due to the lack of sufficient experimental data. Even though measuring optical...

Recensione a "L’altra metà del Risorgimento. Volti e voci di patriote venete", a c. di Nadia Filippini e Liviana Gazzetta, Verona, Cierre, 2011.

Giulia Brian
Questa recensione intende presentare il volume a cura di Nadia Filippini e Liviana Gazzetta "L’altra metà del Risorgimento. Volti e voci di patriote venete" (Cierre 2011): esso si articola in due sezioni, una galleria di profili di trentatré patriote che, pur avendo fatto la Storia, facilmente sarebbero rimaste nel silenzio, e un prezioso archivio di documenti vergati dalle stesse. Le biografie, le testimonianze e la struttura ‘dinamica’ permettono al lettore e alla lettrice di seguire...

Zero-distance pulse fronts of stretcher and its optical system

Gitin, A.; Max Born Institute For Nonlinear Optics And Short Pulse Spectroscopy Max-Born-Str. 2 A, Berlin, 12489, Germany
A two-grating stretcher is a dispersion delay line that is widely used in chirped pulse amplification for ultrafast laser pulses. If the stretcher consists of two reflecting diffraction gratings with a perfectly reflective optical system between them, its dispersion can be calculated by using the concept of a „„zero-distance pulse front.” We introduce the concept of a „„zero-distance pulse front” of the real optical system, which characterizes its aberrations. The similarity of these zero-distance pulse...

Saat-Hafer und Fahnen-Hafer

W. Müller
A: Avena sativa L. - Saathafer, Rispenhafer, B: Avena orientalis L. - Fahnensaathafer oder Fahnenhafer, Familie: 24. Gramineae, 5. Aveneae - Gräser, Hafergräser; Signiert: [WM]; Datum geschätzt; Taf. 66, nach S. 146 (Bd. 1)

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