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Calibration of ECMWF forecasts

Abstract

Not specified

Authors: D. Richardson, S. Hemri, K. Bogner, T. Gneiting, T. Haiden, F. Pappenberger, M. Scheuerer

Date Published: 2014

Publication Type: Journal

Desorption Electrospray Ionisation Mass Spectrometry of Stabilised Polyesters Reveals Activation of Hindered Amine Light Stabilisers

Abstract (Expand)

The use of hindered amine light stabilizers (HALS) to retard thermo- and photo-degradation of polymers has become increasingly common. Proposed mechanisms of polymer stabilisation involve significant … changes to the HALS chemical structure; however, reports of the characterisation of these modified chemical species are limited. To better understand the fate of HALS and determine their in situ modifications, desorption electrospray ionisation mass spectrometry (DESI-MS) was employed to characterise ten commercially available HALS present in polyester-based coil coatings. TINUVIN® 770, 292, 144, 123, 152, and NOR371; HOSTAVIN® 3052, 3055, 3050, and 3058 were separately formulated with a pigmented, thermosetting polyester resin, cured on metal at 262 °C and analysed directly by DESI-MS. High-level ab initio molecular orbital theory calculations were also undertaken to aid the mechanistic interpretation of the results. For HALS containing N-substituted piperidines (i.e., N–CH3, N–C(O)CH3, and N–OR) a secondary piperidine (N–H) analogue was detected in all cases. The formation of these intermediates can be explained either through hydrogen abstraction based mechanisms or direct N–OR homolysis with the former dominant under normal service temperatures (ca. 25–80 °C), and the latter potentially becoming competitive under the high temperatures associated with curing (ca. 230–260 °C).

Authors: Martin R.L. Paine, Ganna Gryn'ova, Michelle L. Coote, Philip J. Barker, Stephen J. Blanksby

Date Published: 2014

Publication Type: Journal

Long range Debye-Hückel correction for computation of grid-based electrostatic forces between biomacromolecules

Abstract

Not specified

Authors: Paolo Mereghetti, Michael Martinez, Rebecca C Wade

Date Published: 2014

Publication Type: Journal

Comparative analysis of Adenylyl Cyclase binding sites

Abstract

Not specified

Author: Rudi Tong

Date Published: 2014

Publication Type: Bachelor's Thesis

Ermittlung probabilistischer Abflussvorhersagen unter Berücksichtigung zensierter Daten

Abstract

Not specified

Authors: Stephan Hemri, Dmytro Lisniak, Bastian Klein

Date Published: 2014

Publication Type: Journal

Radical orbital switching

Abstract

Not specified

Authors: G. Gryn’ova, M. L. Coote

Date Published: 2014

Publication Type: Misc

Trends in the predictive performance of raw ensemble weather forecasts

Abstract

Not specified

Authors: S. Hemri, M. Scheuerer, F. Pappenberger, K. Bogner, T. Haiden

Date Published: 2014

Publication Type: Journal

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