MOSAiC-ACA and AFLUX - Arctic airborne campaigns characterizing the exit area of MOSAiC.

Two airborne field campaigns focusing on observations of Arctic mixed-phase clouds and boundary layer processes and their role with respect to Arctic amplification have been carried out in spring 2019 and late summer 2020 over the Fram Strait northwest of Svalbard. The latter campaign was closely connected to the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition. Comprehensive datasets of the cloudy Arctic atmosphere have been collected by operating remote sensing instruments, in-situ probes, instruments for the measurement of turbulent fluxes of energy and momentum, and dropsondes on board the AWI research aircraft Polar 5.

Screws with larger core diameter and lower thread pitch increase the stability of locked plating in osteoporotic proximal humeral fractures.

Background: Little is known about the screw design as a factor for stability of the bone-implant interface in locking plate fixation of proximal humeral fractures. Aim of the present study was to analyze if locking screws with a large core diameter and a low thread pitch provide increased stability when compared to conventional locking screws.

Methods: 3-Part proximal humeral fractures were created in ten pairs of osteoporotic human cadaveric humeri and fixed with a locking plate.

[Spiral CT of the thorax in primary diagnosis and intensive treatment of polytrauma patients].

The performance of a rapid spiral chest CT scan during primary diagnosis and intensive care leads, in a high percentage of cases, to clinically relevant diagnoses. In particular, occult ventral (tension-) pneumothoraces and lung contusions have been found in one third of polytraumatized patients both initially and during the sequential course. Additional insertion of chest tubes has been observed to be the major consequence.