Results 41 to 50 of about 1,478,010 (293)

A Comparative Study of Cerebral Oxygenation During Exercise in Hemodialysis and Peritoneal Dialysis Patients

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Cognitive impairment and exercise intolerance are common in dialysis patients. Cerebral perfusion and oxygenation play a major role in both cognitive function and exercise execution; HD session per se aggravates cerebral ischemia in this population. This study aimed to compare cerebral oxygenation and perfusion at rest and in mild
Marieta P. Theodorakopoulou, Konstantina Dipla, Danai Faitatzidou, Fotini Iatridi, Areti Georgiou, Artemios Karagiannidis, Erasmia Sampani, Chrysostomos Dimitriadis, Aggelos Koutlas, Andreas Zafeiridis, Pantelis Sarafidis   +10 more
wiley   +1 more source

Quantum criticality in the coupled two-leg spin ladder Ba2CuTeO6

, 2017
We report on zero-field muon spin rotation, electron spin resonance and polarized Raman scattering measurements of the coupled quantum spin ladder Ba2CuTeO6. Zero-field muon spin rotation and electron spin resonance probes disclose a successive crossover
Choi, K. -Y., Choi, Y. S., Do, S. -H., Glamazda, A., Lee, S., Lemmens, P., Ponomaryov, A. N., Sari, Dita Puspita, Watanabe, I., Wosnitza, J., Zvyagin, S. A.   +10 more
core   +1 more source

Magnetoresistance in ordered and disordered double perovskite oxide, Sr$_2$FeMoO$_6$ [PDF]

, 2000
We have prepared crystallographically ordered and disorder specimens of the double perovskite, Sr$_2$FeMoO$_6$ and investigated their magnetoresistance behaviour.
Ashwani Kumar, D.D. Sarma, E.V. Sampathkumaran, G. Nalini, Kobayashi, Mathur, Millis, Millis, Nakagawa, R. Nagarajan, Subham Majumdar, Sugata Ray, T.N. Guru Row   +12 more
core   +2 more sources

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Normal ordering normal modes

European Physical Journal C: Particles and Fields, 2021
In a soliton sector of a quantum field theory, it is often convenient to expand the quantum fields in terms of normal modes. Normal mode creation and annihilation operators can be normal ordered, and their normal ordered products have vanishing ...
Jarah Evslin
doaj   +1 more source

Conservation of the stress tensor in perturbative interacting quantum field theory in curved spacetimes

, 2005
We propose additional conditions (beyond those considered in our previous papers) that should be imposed on Wick products and time-ordered products of a free quantum scalar field in curved spacetime.
Dütsch M., ROBERT M. WALD, STEFAN HOLLANDS, Stora R., Streater R. F., Wald R. M.   +5 more
core   +1 more source

Ordering Epic R-fields

Manuscripta Mathematica, 1983
We are concerned with the following problem. Given a ring R and an epic R-field K, under what conditions can K be fully ordered? Epic R-fields can be constructed in terms of matrices over R; this makes it natural to consider matrix cones over R rather than ordinary cones of elements of K.
openaire   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

Polarization Degree of Magnetic Field Structure Changes Caused by Random Magnetic Field in Gamma-Ray Burst

The Astrophysical Journal
In a Poynting-flux-dominated jet that exhibits an ordered magnetic field, a transition toward turbulence and magnetic disorder follows after magnetic reconnection and energy dissipation during the prompt emission phase. In this process, the configuration
Jiang-Chuan Tuo, Hong-Bang Liu, Qian-Nan Mai, Qian Zhong, Zu-Ke Feng, Kang-Fa Cheng, En-Wei Liang   +6 more
doaj   +1 more source

Beta Distribution Weighted Fuzzy C-Ordered-Means Clustering

Journal of ICT
The fuzzy C-ordered-means clustering (FCOM) is a fuzzy clustering algorithm that enhances robustness and clustering accuracy through the ordered mechanism based on fuzzy C-means (FCM).
Hengda Wang, Mohamad Farhan Mohamad Mohsin, Muhammad Syafiq Mohd Pozi   +2 more
doaj   +1 more source