Results 121 to 130 of about 70,240 (312)

Small glitches, but Rosetta comet mission is achieving major scientific goals [PDF]

, 2014
First paragraph: The landing of Rosetta’s Philae on comet 67P/Churyumov–Gerasimenko was a triumph of engineering. Many spectacular scientific firsts will follow now, but small glitches during the landing make it more difficult to obtain all ...
Schröder, Christian
core  

A Sub‐Microsecond Switch Enabling SWIFT 23Na Imaging at 10.5 T

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To enable sodium SWIFT imaging, which is a zero‐echo time imaging technique, at ultra‐high magnetic fields through the development of custom electronics hardware, and to showcase this capability with in vivo imaging results. Methods The custom hardware developed consists of a high‐speed optical trigger with 10 ns resolution, an in‐bore
Russell L. Lagore, Simon Schmidt, Edward J. Auerbach, Naoharu Kobayashi, Christoph Schildknecht, Steen Moeller, Elnaz Mahmoudi Mahmoudalilou, Štefan Zbýň, Jutta Ellermann, Gregor Adriany, Gregory J. Metzger   +10 more
wiley   +1 more source

Plasma environment of a weak comet – Predictions for Comet 67P/Churyumov–Gerasimenko from multifluid-MHD and Hybrid models

, 2014
The interaction of a comet with the solar wind undergoes various stages as the comet’s activity varies along its orbit. For a comet like 67P/Churyumov–Gerasimenko, the target comet of ESA’s Rosetta mission, the various features include the formation of a
Gombosi, T.I., Hansen, K.C., Glassmeier, K.H., Tenishev, V.M., Richter, I., Tenishev, V. M., Combi, M.R., Motschmann, U., Combi, M., Glassmeier, K.-H., Gombosi, T. I., Rubin, Martin, Koenders, C., Toth, G., Hansen, K. C., Rubin, M., Altwegg, Kathrin   +16 more
core   +1 more source

Rheological Characterization and Multi‐Regime Viscosity Modeling of Diluted Polyethylene Mixtures

Polymer Engineering &Science, EarlyView.
This study maps the flow behavior of low‐density polyethylene in a recycling solvent from dilute solutions to entangled melts. By integrating time–concentration and time–temperature superposition, and coupling three complementary rheometry methods, a unified semiempirical model accurately predicts steady‐shear viscosity over nine decades of viscosity ...
Johannes Krug, Ernst Georg Viehböck, Alexander Hammer, Ursula Steiner, Christof Murnig, Martin Reichel, Christian Paulik, Gerald Berger‐Weber   +7 more
wiley   +1 more source

Large‐Scale Topographic Changes at Erupting Volcanoes Measured by the TanDEM‐X Digital Change Map

Earth and Space Science
Volcanic eruptions cause large‐scale topographic changes, through the emplacement of lava flows and lava domes, the formation of craters and calderas, and thick ash and pyroclastic deposits.
Rebecca Edwards, Juliet Biggs
doaj   +1 more source

Application of Non‐Isothermal Network Theory With Curved‐Channel Element Characteristics to Predict Melt Conveying in High‐Performance Single‐Screw Extruders

Journal of Polymer Science, EarlyView.
This study presents a fast and accurate calculation tool to predict conveying of polymer melts in single‐screw extruders. Integrating generalized sub‐models into network theory allows to represent the complex screw shapes and material behavior more realistically. Tests on an industrial extruder show close agreement with experiments, outperforming older
Daniel Herzog, Wolfgang Roland, Christian Marschik, Gerald Berger‐Weber   +3 more
wiley   +1 more source

The changing comet

The Journal of Headache and Pain, 2017
Editorial
openaire   +3 more sources

Baicalein Sensitizes Radioresistant BT549 and MCF7‐R Breast Cancer Cells by Modulating Rac1 Signaling

Phytotherapy Research, EarlyView.
ABSTRACT Radioresistance remains a key barrier in breast cancer (BC) treatment. Baicalein, a flavonoid from Scutellaria baicalensis, has shown potential to enhance radiosensitivity. This study investigates its efficacy and mechanism in radioresistant BC models. Radioresistant BC cell models were established via fractionated irradiation and validated by
Zitong Zhao, Zhangyun Li, Quanzhou Peng, Shuqun Zhang   +3 more
wiley   +1 more source

De Havilland DH.88 Comet G-ACSR

, 1934
1934 London to Australia air race. MacRobertson Trophy Air Race. Refuelling the de Havilland DH.88 Comet G-ACSR, flown by O. Cathcart Jones, K. F. Waller. Entrant no.

core  

Spectral analysis of the Chandra comet survey

, 2007
Aims.We present results of the analysis of cometary X-ray spectra with an extended version of our charge exchange emission model (Bodewits et al. 2006).
Tielens, A.G.G.M., Hoekstra, R.; id_orcid, Bodewits, D., A. G. G. M. Tielens, Hoekstra, R., Torney, M., Tielens, A. G. G. M., Christian, D.J., Dennerl, K., Wolk, S.J., Dryer, M., D. J. Christian, Zurbuchen, T.H., Christian, D. J., T. H. Zurbuchen, M. Torney, M. Dryer, C. M. Lisse, Zurbuchen, T., Tielens, A., Lisse, C. M., Zurbuchen, T. H., S. J. Wolk, D. Bodewits, K. Dennerl, Wolk, S., R. Hoekstra, Christian, D., Lisse, C., Lisse, C.M., Wolk, S. J.   +30 more
core   +1 more source