Results 51 to 60 of about 385,884 (298)

The concept of spin ice graphs and a field theory for their charges

AIP Advances, 2020
Originally detected in rare earth pyrochlores, spin ice physics is now being artificially extended to a variety of geometries that control collective behavior and exotic properties, making graph theory their proper framework.
Cristiano Nisoli
doaj   +1 more source

Path integral Monte Carlo simulations for rigid rotors and their application to water

, 2010
In this work the path integral formulation for rigid rotors, proposed by M\"user and Berne [Phys. Rev. Lett. {\bf 77}, 2638 (1996)], is described in detail. It is shown how this formulation can be used to perform Monte Carlo simulations of water.
Allen MP, Bunker PR, Callen HB, Carl McBride, Carlos Vega, Eva G. Noya, Feynman RP, Franks F, Gray CG, Levine IN, Levine IN, Luis M. Sesé, Maria M. Conde, McQuarrie DA, Rafael Ramírez, Zare RN, Zare RN   +16 more
core   +1 more source

Hands‐on protocol for preparing water‐soluble fractions from agri‐food samples for NMR‐based metabolomics analysis

FEBS Open Bio, EarlyView.
This research protocol outlines a workflow for nuclear magnetic resonance (NMR)‐based metabolomics in the agri‐food sector. Using two case studies—strawberry leaves (solid matrix) and wine (liquid matrix)—it details the procedures for sample preparation, data acquisition, and processing.
Andrea Fernández‐Veloso, Jaime Hiniesta‐Valero, Alejandra Guerra‐Castellano, Miguel A. De la Rosa, Irene Díaz‐Moreno   +4 more
wiley   +1 more source

Bipolar volcanic synchronization of abrupt climate change in Greenland and Antarctic ice cores during the last glacial period [PDF]

Climate of the Past, 2020
The last glacial period is characterized by a number of millennial climate events that have been identified in both Greenland and Antarctic ice cores and that are abrupt in Greenland climate records.
A. Svensson, D. Dahl-Jensen, J. P. Steffensen, T. Blunier, S. O. Rasmussen, B. M. Vinther, P. Vallelonga, P. Vallelonga, E. Capron, V. Gkinis, E. Cook, H. A. Kjær, R. Muscheler, S. Kipfstuhl, S. Kipfstuhl, F. Wilhelms, T. F. Stocker, H. Fischer, F. Adolphi, F. Adolphi, T. Erhardt, M. Sigl, A. Landais, F. Parrenin, C. Buizert, J. R. McConnell, M. Severi, R. Mulvaney, M. Bigler   +28 more
doaj   +1 more source

Quantum melting of charge ice and non-Fermi-liquid behavior: An exact solution for the extended Falicov-Kimball model in the ice-rule limit

, 2010
An exact solution is obtained for a model of itinerant electrons coupled to ice-rule variables on the tetrahedron Husimi cactus, an analogue of the Bethe lattice of corner-sharing tetrahedra.
Hiroaki Ishizuka, M. F. Thorpe, Masafumi Udagawa, S. T. Bramwell, Yukitoshi Motome   +4 more
core   +1 more source

Faster Arctic sea ice retreat in CMIP5 than in CMIP3 due to volcanoes [PDF]

, 2016
The downward trend in Arctic sea ice extent is one of the most dramatic signals of climate change during recent decades. Comprehensive climate models have struggled to reproduce this, typically simulating a slower rate of sea ice retreat than has been ...
Eisenman, Ian, Rosenblum, Erica
core   +2 more sources

Promiscuous stimulation of HSP70 ATPase activity by parasite‐derived J‐domains

FEBS Open Bio, EarlyView.
The malaria parasite Plasmodium falciparum exports three highly homologous yet functionally divergent J‐domain proteins into human erythrocytes. Here, we show that J‐domains isolated from all three proteins effectively stimulate the ATPase activity of both endogenous host and exported parasite HSP70 chaperones.
Julian Barth, Moritz Koch, Le‐Han Rössner, Johanna Eichhorn, Denys Pogoryelov, Matthias P. Mayer, Jude M. Przyborski   +6 more
wiley   +1 more source

Numerical approximation of the Euler-Poisson-Boltzmann model in the quasineutral limit [PDF]

, 2010
This paper analyzes various schemes for the Euler-Poisson-Boltzmann (EPB) model of plasma physics. This model consists of the pressureless gas dynamics equations coupled with the Poisson equation and where the Boltzmann relation relates the potential to ...
A.B. Langdon, B.I. Cohen, D. Savelief, F. Bouchut, F. Bouchut, F.F. Chen, G.-Q. Chen, G.-Q. Chen, H. Liu, H. Liu, H. Liu, H. Liu, H.-H. Choe, L.T. Cheng, M.-H. Vignal, N.A. Krall, P. Crispel, P. Degond, P. Degond, P. Degond, P. Degond, P. Degond, P. Degond, Ph. Colella, R. Belaouar, R. Schneider, R.J. Leveque, R.J. Mason, R.J. Mason, S. Fabre, S. Jin, S. Jin, S. Jin, U. Shumlak, V.V. Rusanov, X. Li, Y. Brenier, Y. Brenier   +37 more
core   +6 more sources

Iron homeostasis disruption and lipid peroxidation in skeletal muscle during short‐term immobilization

FEBS Open Bio, EarlyView.
14‐day casting‐induced immobilization reduced gastrocnemius muscle mass and increased non‐heme iron and ferritin heavy chain levels. Despite iron accumulation, transferrin receptor 1 and iron regulatory protein 2 were paradoxically upregulated. Lipid peroxidation was elevated without compensatory antioxidant responses.
Haruka Yokogawa, Kazuhiko Higashida, Naoya Nakai   +2 more
wiley   +1 more source

Effect of Foot Orthoses on Midfoot Pain and the Volume of Bone Marrow Lesions in the Midfoot: A Randomized Mechanism of Action Study

Arthritis Care &Research, EarlyView.
Objective Foot orthoses are thought to improve pain by potentially modifying internal mechanical forces. To test this, we explored whether foot orthoses can modify patterns of bone marrow lesions (BMLs) in people with midfoot pain. Methods Forty‐two people were recruited with midfoot pain, and magnetic resonance imaging–confirmed midfoot BMLs ...
Jill Halstead, Anne‐Maree Keenan, Philip G. Conaghan, Dennis McGonagle, Anthony C. Redmond   +4 more
wiley   +1 more source