Results 51 to 60 of about 1,009,629 (325)

Non-WKB Models of the FIP Effect: The Role of Slow Mode Waves

, 2011
A model for element abundance fractionation between the solar chromosphere and corona is further developed. The ponderomotive force due to Alfven waves propagating through, or reflecting from the chromosphere in solar conditions generally accelerates ...
Allan, Avrett, Banaszkiewicz, Brooks, Bryans, Campos, Carlsson, Cranmer, Cranmer, Cranmer, Feldman, Feldman, Feldman, Ferland, Giammanco, Giammanco, J. Martin Laming, Kasper, Khomenko, Ko, Laming, Laming, Laming, Laming, Landau, Litwin, Patsourakos, Phillips, Schwadron, Sylwester, Sylwester, Widing, Wood   +32 more
core   +1 more source

Electrical Field Flow Fractionation (EFFF) Using an Electrically Insulated Flow Channel [PDF]

, 2004
The present invention is an apparatus and a process for separation and resolution of particles suspended in, or molecules dissolved in, a sample mixture or solution using electrical field flow fractionation (EFFF).
Hill, Michael W., Russell, Dale D.
core   +1 more source

Soil water stable isotopes reveal evaporation dynamics at the soil–plant–atmosphere interface of the critical zone [PDF]

, 2017
Acknowledgements. We are thankful for the support by Audrey Innes during all laboratory work. We further thank Jonathan Dick for running the isotope analysis of precipitation samples and Annette C. Raffan for her support in the soil texture analysis.
Soulsby, Chris, Sprenger, Matthias, Tetzlaff, Doerthe   +2 more
core   +3 more sources

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Field-Flow Fractionation in Nanogeoscience Research: Advances and Applications

Yankuang ceshi
The breakthrough advances in nanogeoscience research have been facilitated by innovations in modern analytical techniques, driving earth science research towards the gradual realization of coordinated multi-sphere observations spanning from the ...
Haoyu CEN, Xuanni FU, Meng WANG, Zebang YI, Wei FU, Cheng XU   +5 more
doaj   +1 more source

Partition-Induced Vector Chromatography in Microfluidic Devices

, 2010
The transport of Brownian particles in a slit geometry in the presence of an arbitrary two-dimensional periodic energy landscape and driven by an external force or convected by a flow field is investigated by means of macrotransport theory.
Bahukudumbi, Balvin, Bhagat, Brenner, Brenner, Burada, Carlo, Choi, Choi, Choi, Davis, Dorfman, Dorfman, Eijkel, Ermak, Evander, Frechette, Gascoyne, German Drazer, Giddings, Giddings, Giddings, Giddings, Han, Han, Happel, Herrmann, Huang, Hughes, Jacobs, Jonáš, Jorge A. Bernate, Kovarik, Kowalkowski, Kralj, Kulrattanarak, Laachi, Li, Mao, Morton, Morton, Pamme, Pamme, Park, Pawar, Risken, Sai, Staben, Takagi, Vastamäki, Wang, Wu, Yamada, Yamada, Zwanzig   +54 more
core   +1 more source

Modelling and experimental study of separators for co-solvent recovery in a supercritical extraction process [PDF]

, 2006
Co-solvent recovery in supercritical extraction is addressed here through a theoretical description of the behaviour of a CO2 + co-solvent mixture into a cascade of cyclonic separators, such as those existing in conventional fractionation processes based
Camy, Séverine, Condoret, Jean-Stéphane   +1 more
core   +2 more sources

Transferrin receptor 1‐mediated iron uptake supports thermogenic activation in human cervical‐derived adipocytes

FEBS Letters, EarlyView.
In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai, Mizuki Seo, Gyath Karadsheh, Fachrur Rizal Mahendra, Máté Á Demény, Ferenc Győry, János András Mótyán, László Fésüs, Endre Kristóf, Rini Arianti   +9 more
wiley   +1 more source

On the Origin of the Slow Speed Solar Wind: Helium Abundance Variations

, 2012
The First Ionization Potential (FIP) effect is the by now well known enhancement in abundance over photospheric values of Fe and other elements with first ionization potential below about 10 eV observed in the solar corona and slow speed solar wind.
Antiochos, Avrett, Bourouaine, Bruno, Bryans, Byhring, Campos, Cara E. Rakowski, Cranmer, Cranmer, Feldman, Heggland, J. Martin Laming, Kasper, Kigure, Killie, Ko, Laming, Laming, Laming, Laming, Laming, Litwin, Longcope, Noci, Ofman, Ofman, Parker, Parker, Rappazzo, Rappazzo, Ruderman, Schwadron, Sturrock, Verdini, Wang, Wang, Wood   +37 more
core   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source