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Decreased cryogenic disturbance: one of the potential mechanisms behind the vegetation change in the Arctic

During the last few decades, the Arctic has experienced large-scale vegetation changes. Understanding the mechanisms behind this vegetation change is crucial for our ability to predict future changes. This study tested the hypothesis that decreased cryogenic disturbances cause vegetation change in patterned ground study fields (non-sorted circles) in Abisko, Sweden during the...

Inner disk clearing around the Herbig Ae star HD 139614: Evidence for a planet-induced gap?

Spatially resolving the inner dust cavity (or gap) of the so-called (pre-)transitional disks is a key to understanding the connection between the processes of planetary formation and disk dispersal. The disk around the Herbig star HD 139614 is of particular interest since it presents a pretransitional nature with an au-sized gap structure that is spatially resolved by mid...

An M-dwarf star in the transition disk of Herbig HD 142527 - Physical parameters and orbital elements

A&A Astronomy & Astrophysics S. Lacour B. Biller A. Cheetham A. Greenbaum T. Pearce S. Marino P. Tuthill L. Pueyo E. E. Mamajek J. H. Girard A. Sivaramakrishnan M. Bonnefoy I. Bara e G. Chauvin J ... . Olofsson A. Juhasz M. Benisty J.-U. Pott A. Sicilia-Aguilar T. Henning A. Cardwell S. Goodsell J. R. Graham P. Hibon P. Ingraham Q. Konopacky B. Macintosh R. Oppenheimer M. Perrin F. Rantakyrö N. Sadakuni S

Constraining the structure of the transition disk HD 135344B (SAO 206462) by simultaneous modeling of multiwavelength gas and dust observations

Context. Constraining the gas and dust disk structure of transition disks, particularly in the inner dust cavity, is a crucial step toward understanding the link between them and planet formation. HD 135344B is an accreting (pre-)transition disk that displays the CO 4.7 μm emission extending tens of AU inside its 30 AU dust cavity. Aims. We constrain HD 135344B’s disk structure...

Prof. Dr. György Lichtenberger (1944–2009), Budapest, Hungary

, 35037 Marburg, Germany 3 J. Olofsson Department of Otolaryngology, Haukeland University Hospital , Bergen, Norway - On 27 May 2009, the world otorhinolaryngology community suVered the abrupt and

Regulation of the inducible form of prostaglandin endoperoxide synthase in the perfused rat ovary

The regulation of the two isoforms of prostaglandin endoperoxide synthase (PGS-1 and PGS-2) and prostaglandin synthesis by luteinizing hormone (LH)/3-isobutyl-1-methylxanthine (IBMX) and progesterone was examined in granulosa cells and residual ovarian tissue of rat ovaries perfused in vitro. The endogenous progesterone synthesis was blocked by an inhibitor of 3β-dehydroxysteroid...