Results 61 to 70 of about 1,261,954 (334)

Ferromagnetism in a dilute magnetic semiconductor -- Generalized RKKY interaction and spin-wave excitations

, 2003
Carrier-mediated ferromagnetism in a dilute magnetic semiconductor has been studied using i) a single-impurity based generalized RKKY approach which goes beyond linear response theory, and ii) a mean-field-plus-spin-fluctuation (MF+SF) approach within a (
A. Chattopadhyay, A. L. Chudnovskiy, A. Singh, A. Singh, A. Singh, A. Singh, Animesh Datta, Avinash Singh, B. H. Lee, C. Timm, C. Timm, D. Poilblanc, F. Matsukara, G. Alvarez, G. Alvarez, G. Bouzerar, H. Akai, H. Ohno, H. Ohno, H. Ohno, J. König, J. König, J. Okabayashi, J. R. Chelikowski, J. R. Schrieffer, J. Schliemann, J. Schliemann, L. M. Sandratskii, M. Berciu, M. Berciu, M. E. Lines, M. L. Reed, M. P. Kennett, M. P. Kennett, M. Shirai, M. Takahashi, N. Theodoropolpu, S. Sanvito, S. Sonoda, Subrat K. Das, T. Dietl, T. Dietl, T. Dietl, T. Jungworth, T. Jungworth, V. A. Ivanov, Vijay A. Singh   +46 more
core   +1 more source

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

Asthma is associated with increased Streptococcus pneumoniae carriage in the upper airway: a systematic review and meta-analysis

European Clinical Respiratory Journal
Background Asthma is a chronic respiratory condition characterized by airway inflammation and hyperreactivity. Previous studies have suggested a potential association between asthma and bacterial colonization of the upper respiratory tract.
Raeni Dwi Putri, Chrysanti Murad, Kuswandewi Mutyara   +2 more
doaj   +1 more source

Photoluminescence-based measurements of the energy gap and diffusion length of Zn_3P_2 [PDF]

, 2009
The steady-state photoluminescence spectra of zinc phosphide (Zn_3P_2) wafers have revealed a fundamental indirect band gap at 1.38 eV, in close proximity to the direct band gap at 1.50 eV. These values are consistent with the values for the indirect and
Atwater, Harry A., Kimball, Gregory M., Lewis, Nathan S., Müller, Astrid M.   +3 more
core  

Quantum Oscillations in Cu$_x$Bi$_2$Se$_3$ in High Magnetic Fields

, 2014
Cu$_x$Bi$_2$Se$_3$ has drawn much attention as the leading candidate to be the first topological superconductor and the realization of coveted Majorana particles in a condensed matter system.
Asaba, T., Gao, T., Hor, Y. S., Lawson, B. J., Li, G., Li, Lu, Tinsman, C., Wang, W., Yu, F.   +8 more
core   +1 more source

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

Portadores nasales de sthaphylococcus aereus meticilino resistente en contacto con pacientes pediátricos con enfermedad diseminada adquirida en la comunidad. [PDF]

MedUNAB, 2007
Background: sthaphylococcus aereus (SA) is an important cause of disese in pediatric population. Methicillin resistant sthaphylococcus aereus (MRSA) infection have spread worldwide coth health care and comunity setting. Asyntimatic colonization with MRSA
Luis Miguel Sosa Ávila, Martha Lucía Incapié   +1 more
doaj  

Ground-state of graphene in the presence of random charged impurities

, 2008
We calculate the carrier density dependent ground state properties of graphene in the presence of random charged impurities in the substrate taking into account disorder and interaction effects non-perturbatively on an equal footing in a self-consistent ...
Enrico Rossi, S. Das Sarma, V. W. Brar
core   +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

Hepatitis B Virus: Inactive carriers

Virology Journal, 2005
Inactive carriers forms the largest group in chronic HBV infected patients. Around 300 million people are inactive carriers The inactive HBsAg carrier state is diagnosed by absence of HBeAg and presence of anti-HBe, undetectable or low levels of HBV DNA ...
Saini Nitin, Sharma Sanjeev Kumar, Chwla Yogesh   +2 more
doaj   +1 more source