Advanced Search
Display options
Filter resources
Text Availability
Article type
Publication date
Species
Language
Sex
Age
Showing 1 to 12 of 38 entries
Sorted by: Best Match Show Resources per page
Asymmetric alignment-stabilized external-cavity semiconductor laser.

Optics letters

Codá LM, von der Weid JP, Conforti E.
PMID: 19798283
Opt Lett. 1992 Dec 01;17(23):1682-4. doi: 10.1364/ol.17.001682.

We have demonstrated an alignment-stabilized asymmetric cavity configuration for a grating-tuned externalcavity semiconductor laser. The grating in the asymmetric cavity has a 16-fold greater angular misalignment tolerance than in a conventional symmetric external-cavity semiconductor laser. The tuning ranges are...

Measured Effects of Wnt3a on Proliferation of HEK293T Cells Depend on the Applied Assay.

International journal of cell biology

Reischmann P, Fiebeck J, von der Weiden N, Müller O.
PMID: 26798342
Int J Cell Biol. 2015;2015:928502. doi: 10.1155/2015/928502. Epub 2015 Dec 22.

The Wnt signaling pathway has been associated with many essential cell processes. This study aims to examine the effects of Wnt signaling on proliferation of cultured HEK293T cells. Cells were incubated with Wnt3a, and the activation of the Wnt...

Mode Selectivity of SH Guided Waves by Dual Excitation and Reception Applied to Mode Conversion Analysis.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control

Kubrusly AC, Freitas MA, von der Weid JP, Dixon S.
PMID: 29993376
IEEE Trans Ultrason Ferroelectr Freq Control. 2018 Jul;65(7):1239-1249. doi: 10.1109/TUFFC.2018.2835299.

Shear horizontally (SH) guided waves, generated by periodic permanent magnet arrays, have been used previously in nondestructive evaluation of metal plates and pipes. When an SH guided wave interacts with a defect or a change in sample thickness, the...

Stable single-photon interference in a 1 km fiber-optic Mach-Zehnder interferometer with continuous phase adjustment.

Optics letters

Xavier GB, von der Weid JP.
PMID: 21593883
Opt Lett. 2011 May 15;36(10):1764-6. doi: 10.1364/OL.36.001764.

We experimentally demonstrate stable and user-adjustable single-photon interference in a 1 km long fiber-optic Mach-Zehnder interferometer, using an active phase control system with the feedback provided by a classical laser. We are able to continuously tune the single-photon phase...

Polarization-mode interferometry in birefringent single-mode fibers.

Optics letters

Thévenaz L, de Coulon V, Von der Weid JP.
PMID: 19741818
Opt Lett. 1987 Aug 01;12(8):619-21. doi: 10.1364/ol.12.000619.

An interferometric technique was used to investigate the relative phase delay between polarization modes in birefringent single-mode fibers. Polarization-mode dispersion is directly deduced from the measurements of relative phase delay at different wavelengths. Relative group delays of 20 fsec...

Characterization of the wide band chirp of laser diodes with time-resolved spectroscopy.

Applied optics

Tovar P, Ynóquio LE, Ribeiro RM, von der Weid JP.
PMID: 31503640
Appl Opt. 2019 Sep 01;58(25):6737-6741. doi: 10.1364/AO.58.006737.

This paper reports a high-resolution amplified optical sampling time-resolved spectroscopy technique for characterization of the chirp of laser diodes with no limitations on measuring chirp ranges. The chirp induced by slowly (25 Hz) and rapidly (>100  MHz) varying current...

Evaluation of Pearson correlation coefficient and Parisi parameter of replica symmetry breaking in a hybrid electronically addressable random fiber laser.

Optics express

Coronel E, Das A, González IRR, Gomes ASL, Margulis W, von der Weid JP, Raposo EP.
PMID: 34614688
Opt Express. 2021 Jul 19;29(15):24422-24433. doi: 10.1364/OE.431981.

The hybrid electronically addressable random (HEAR) laser is a novel type of random fiber laser that presents the remarkable property of selection of the fiber section with lasing emission. Here we present a joint analysis of the correlations between...

Mode conversion of SH guided waves with symmetry inversion in plates.

Ultrasonics

Kubrusly AC, Tovar P, von der Weid JP, Dixon S.
PMID: 33385707
Ultrasonics. 2021 Apr;112:106334. doi: 10.1016/j.ultras.2020.106334. Epub 2020 Dec 24.

When shear horizontal ultrasonic guided waves interact with thickness discontinuities in plates, the reflected and transmitted wavefields can be composed of several modes due to mode conversion. It is known that in a plate with a symmetric discontinuity, with...

Derivation of acoustoelastic Lamb wave dispersion curves in anisotropic plates at the initial and natural frames of reference.

The Journal of the Acoustical Society of America

C Kubrusly A, M B Braga A, von der Weid JP.
PMID: 27794336
J Acoust Soc Am. 2016 Oct;140(4):2412. doi: 10.1121/1.4964343.

The propagation speed of ultrasonic waves in pre-stressed media can be evaluated either at the natural or initial frames of reference. In this paper general equations that can be applied to the partial wave technique are presented in order...

The dietary fibre rhamnogalacturonan improves intestinal epithelial barrier function in a microbiota-independent manner.

British journal of pharmacology

Baggio CH, Shang J, Gordon MH, Stephens M, von der Weid PY, Nascimento AM, Román Y, Cipriani TR, MacNaughton WK.
PMID: 34784647
Br J Pharmacol. 2021 Nov 16; doi: 10.1111/bph.15739. Epub 2021 Nov 16.

BACKGROUND AND PURPOSE: Dietary fibre comprises a complex group of polysaccharides that are indigestible but are fermented by gut microbiota, promoting beneficial effects to the intestinal mucosa indirectly through the production of short chain fatty acids. We found that...

Guidelines for Biobanking of Bone Marrow Adipose Tissue and Related Cell Types: Report of the Biobanking Working Group of the International Bone Marrow Adiposity Society.

Frontiers in endocrinology

Lucas S, Tencerova M, von der Weid B, Andersen TL, Attané C, Behler-Janbeck F, Cawthorn WP, Ivaska KK, Naveiras O, Podgorski I, Reagan MR, van der Eerden BCJ.
PMID: 34646237
Front Endocrinol (Lausanne). 2021 Sep 27;12:744527. doi: 10.3389/fendo.2021.744527. eCollection 2021.

Over the last two decades, increased interest of scientists to study bone marrow adiposity (BMA) in relation to bone and adipose tissue physiology has expanded the number of publications using different sources of bone marrow adipose tissue (BMAT). However,...

To be or not to be in the social media arena? The perspective of healthcare providers working within adolescent and young adult oncology in Switzerland.

International journal of adolescent medicine and health

De Clercq E, Rost M, von der Weid N, Ansari M, Elger BS.
PMID: 32860667
Int J Adolesc Med Health. 2020 Aug 27; doi: 10.1515/ijamh-2020-0137. Epub 2020 Aug 27.

Background Given that social media is quickly penetrating clinical practice, it is essential to explore how these technologies can be used to improve patient-centered care. This is particularly important for healthcare professionals caring for adolescents and young adults (AYA),...

Showing 1 to 12 of 38 entries