Results 31 to 40 of about 387,228 (272)

Inclined Massive Planets in a Protoplanetary Disc: Gap Opening, Disc Breaking, and Observational Signatures [PDF]

, 2018
We carry out three-dimensional hydrodynamical simulations to study planet-disc interactions for inclined high mass planets, focusing on the disc's secular evolution induced by the planet. We find that, when the planet is massive enough and the induced gap is deep enough, the disc inside the planet's orbit breaks from the outer disc. The inner and outer
arxiv   +1 more source

Demographics of Transition Discs in Ophiuchus and Taurus [PDF]

, 2015
Transition disc systems are young stars that appear to be on the verge of dispersing their protoplanetary discs. We explore the nature of these systems by comparing the stellar accretion rates and disc masses of transition discs and normal T Tauri stars in Taurus and Ophiuchus.
arxiv   +1 more source

A histidine‐rich extension of the mitochondrial F0 subunit ATP6 from the ice worm Mesenchytraeus solifugus increases ATP synthase activity in bacteria

FEBS Letters, EarlyView.
The glacier ice worm Mesenchytraeus solifugus survives year‐round at 0 °C. Its ATP6 subunit, which forms a regulatory component of the proton pore in mitochondrial ATP synthase, has a carboxy‐terminal extension not found in any other organism examined to date. Here, we show that fusion of this extension to the homologous AtpB protein in E. coli results
Truman Dunkley, Daniel H. Shain, Eric A. Klein   +2 more
wiley   +1 more source

Pediatric Spontaneous Discitis: A Case Report

Indian Journal of Neurosurgery, 2015
Discitis in children is a benign self-limiting inflammatory or infectious lesion of the intervertebral disc space. Spondylitis/spondylodiscitis is still an uncommon diagnosis, often with delay in diagnosis and treatment due to uncharacteristic symptoms ...
Erkan Çakmak, Hamza Karabağ, A. Celal İplikçioçlu   +2 more
doaj   +1 more source

Coevolution of Binaries and Gaseous Discs [PDF]

, 2016
The recent discoveries of circumbinary planets by $\it Kepler$ raise questions for contemporary planet formation models. Understanding how these planets form requires characterizing their formation environment, the circumbinary protoplanetary disc, and how the disc and binary interact and change as a result. The central binary excites resonances in the
arxiv   +1 more source

Functional variation among LPMOs revealed by the inhibitory effects of cyanide and buffer ions

FEBS Letters, EarlyView.
This study addresses the inhibition of lytic polysaccharide monooxygenases (LPMOs) by cyanide and explains how and why the magnitude of observed inhibitory effects depends on the way LPMO reactions are setup and on the type of LPMO. Enzymes known as lytic polysaccharide monooxygenases (LPMOs) are mono‐copper polysaccharide‐degrading peroxygenases that ...
Ole Golten, Lorenz Schwaiger, Zarah Forsberg, Kelsi R. Hall, Anton A. Stepnov, Tom Z. Emrich‐Mills, Iván Ayuso‐Fernández, Morten Sørlie, Roland Ludwig, Åsmund Kjendseth Røhr, Vincent G. H. Eijsink   +10 more
wiley   +1 more source

Comparison of three approaches for defining nucleus pulposus and annulus fibrosus on sagittal magnetic resonance images of the lumbar spine

Journal of Orthopaedic Translation, 2016
Objective: To compare three methods commonly used in the literature to define intervertebral disc nucleus pulposus (NP) and annulus fibrosus (AF) on magnetic resonance (MR) images.
Greta S.P. Mok, Duo Zhang, Shu-Zhong Chen, Jing Yuan, James F. Griffith, Yi Xiang J. Wang   +5 more
doaj   +1 more source

Normative Data and Determinants of Macular, Disc, and Peripapillary Vascular Density in Healthy Myopic Children Using Optical Coherence Tomography Angiography

Frontiers in Medicine, 2022
ObjectiveTo establish a normative database for the vascular density (VD) in macular, disc, and peripapillary regions in healthy myopic children and to evaluate associated ocular features with optical coherence tomography angiography (OCTA).MethodsThis ...
Ruru Chen, Hengli Lian, Colm McAlinden, Colm McAlinden, Colm McAlinden, Colm McAlinden, Eirini Skiadaresi, Siyu Liu, Ting Wan, Kai Diao, Hongxian Pan, Jia Qu, Jinhai Huang, Jinhai Huang, Jinhai Huang, Yiyu Li   +15 more
doaj   +1 more source

Does the mass distribution in discs influence encounter-induced losses in young star clusters? [PDF]

, 2014
One mechanism for the external destruction of protoplanetary discs in young dense clusters is tidal disruption during the flyby of another cluster member. The degree of mass loss in such an encounter depends, among other parameters, on the distribution of the material within the disc.
arxiv   +1 more source

Insertion of the FeB cofactor in cNORs lacking metal inserting chaperones

FEBS Letters, EarlyView.
Nitric oxide reductase is an enzyme found in the bacterial denitrification pathway. The NOR active site contains a non‐heme iron, often, but not always inserted with the assistance of chaperones. Here, we study the insertion of FeB in the subfamily of cNORs lacking chaperones and found a putative channel, conserved in the family, perhaps enabling the ...
Sofia Appelgren, Pia Ädelroth
wiley   +1 more source