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Consortium of Swiss Academic Libraries

Polarization Models for Rayleigh Scattering Planetary Atmospheres

Buenzli, Esther ; Schmid, Hans ; Joos, Franco

In: Earth, Moon, and Planets, 2009, vol. 105, no. 2-4, p. 153-157

Consortium of Swiss Academic Libraries

Natural cement and monumental restoration

Gosselin, C. ; Verges-Belmin, V. ; Royer, A. ; Martinet, G.

In: Materials and Structures, 2009, vol. 42, no. 6, p. 749-763

Université de Fribourg

Taylor dispersion of inorganic nanoparticles and comparison to dynamic light scattering and transmission electron microscopy

A.Urban, Dominic ; M.Milosevic, Ana ; Bossert, David ; Crippa, Federica ; L.Moore, Thomas ; Geers, Christoph ; Balog, Sandor ; Rothen-Rutishauser, Barbara ; Petri-Fink, Alke

In: Colloid and Interface Science Communications, 2018, vol. 22, p. 29–33

Taylor dispersion analysis (TDA) is an analytical method that has so far mainly been utilized to determine the diffusion coefficient of small molecules, and proteins. Due to increasing interest in nanoscience, some research has been done on the applicability of TDA towards characterizing nanoparticles. This work aims to expand this knowledge and give insight into the range for which TDA can...

Université de Fribourg

Hypothesis test of the photon count distribution for dust discrimination in dynamic light scattering

Bossert, David ; Crippa, Federica ; Petri-Fink, Alke ; Balog, Sandor

In: Analytical Chemistry, 2018, vol. 90, no. 6, p. 3656–3660

Users of dynamic light scattering (DLS) are challenged when a sample of nanoparticles (NPs) contains dust. This is a frequently inevitable scenario and a major problem that critically affects the reproducibility and accuracy of DLS measurements. Current methods approach this problem via photon correlation spectroscopy, but remedy exists only for a few special cases. We introduce here a...

Université de Fribourg

Identification of general patterns of sex-biased expression in Daphnia, a genus with environmental sex determination

Molinier, Cécile ; Reisser, Céline M.O. ; Fields, Peter ; Ségard, Adeline ; Galimov, Yan ; Haag, Christoph R.

In: G3& Genes|Genomes|Genetics, 2018, vol. 8, no. 5, p. 1523–1533

Daphnia reproduce by cyclic-parthenogenesis, where phases of asexual reproduction are intermitted by sexual production of diapause stages. This life cycle, together with environmental sex determination, allow the comparison of gene expression between genetically identical males and females. We investigated gene expression differences between males and females in four genotypes of Daphnia...

Université de Fribourg

Island dynamics and anisotropy during vapor phase epitaxy of m-plane GaN

Perret, Edith ; Xu, Dongwei ; Highland, M. J. ; Stephenson, G. B. ; Zapol, P. ; Fuoss, P. H. ; Munkholm, A. ; Thompson, Carol

In: Applied Physics Letters, 2017, vol. 111, no. 23, p. 232102

Using in situ grazing-incidence x-ray scattering, we have measured the diffuse scattering from islands that form during layer-by-layer growth of GaN by metal-organic vapor phase epitaxy on the (101⎯⎯0)(101¯0)(101¯0) m-plane surface. The diffuse scattering is extended in the (0001)(0001)(0001) in-plane direction in reciprocal space, indicating a strong anisotropy with islands elongated...