Results 41 to 50 of about 11,895,768 (324)

Ultrafast nonlinear optical response of Dirac fermions in graphene [PDF]

, 2018
The speed of solid-state electronic devices, determined by the temporal dynamics of charge carriers, could potentially reach unprecedented petahertz frequencies through direct manipulation by optical fields, consisting in a million-fold increase from ...
Baudisch, Matthias, Biegert, Jens, Cox, Joel D., García de Abajo, F. Javier, Koppens, Frank H. L., Levitov, Leonid S., Marini, Andrea, Massicotte, Mathieu, Silva, Francisco, Teichmann, Stephan, Zhu, Tony   +10 more
core   +2 more sources

On the Nature of Charge Transport in Quantum-Cascade Lasers

, 2001
The first global quantum simulation of semiconductor-based quantum-cascade lasers is presented. Our three-dimensional approach allows to study in a purely microscopic way the current-voltage characteristics of state-of-the-art unipolar nanostructures ...
Iotti, Rita Claudia, Rossi, Fausto
core   +1 more source

Vesicles as antibiotic carrier: State of art

International Journal of Pharmaceutics, 2020
Antimicrobial resistance (AMR) has become a global health problem. Bacteria are able to adapt to different environments, with the presence or absence of a host, forming colonies and biofilms. In fact, biofilm formation confers chemical protection to the microbial cells, thus making most of the conventional antibiotics ineffective.
Marchianò, Verdiana, Matos, María, Serrano-Pertierra, Esther, Gutiérrez, Gemma, Blanco-López, M.C.   +4 more
openaire   +3 more sources

Mechanism of carrier-induced ferromagnetism in magnetic semiconductors

, 2002
Taking into account both random impurity distribution and thermal fluctuations of localized spins, we have performed a model calculation for the carrier (hole) state in Ga$_{1-x}$Mn$_x$As by using the coherent potential approximation (CPA).
A. Oiwa, B. Beschoten, C. Zener, D.M. Edwards, F. Matsukura, H. Akai, H. Ohno, J. Inoue, J. König, J. Okabayashi, J. Okabayashi, J. Okabayashi, J.H. Park, K. Hirakawa, K. Hirakawa, K. Kubo, Kenn Kubo, M. Linnarsson, M. Takahashi, M. Takahashi, M. Takahashi, M. Yagi, Masao Takahashi, O. Sakai, S. Katsumoto, T. Dietl, T. Ogawa   +26 more
core   +1 more source

Discontinuation of antiviral prophylaxis correlates with high prevalence of hepatitis B virus (HBV) reactivation in rheumatoid arthritis patients with HBV carrier state: a real-world clinical practice

BMC Musculoskeletal Disorders, 2014
BackgroundTo investigate the risk of hepatitis B virus (HBV) reactivation in rheumatoid arthritis (RA) patients with HBV carrier state during treatment of disease-modifying antirheumatic drugs (DMARDs) and the use of antiviral prophylaxis in real-world ...
Y. Mo, An-Qi Liang, Jian-da Ma, Le-Feng Chen, D. Zheng, H. Schumacher, L. Dai   +6 more
semanticscholar   +1 more source

Carriage of Neisseria meningitidis Serogroup W135 ST-2881

Emerging Infectious Diseases, 2006
Serogroup W135 ST-2881 meningococci caused a cluster of meningitis cases in Niger in 2003. Of 80 healthy persons in the patients' villages, 28 (35%) carried meningococci; 20 of 21 W135 carrier strains were ST-2881.
Pascal Boisier, Pierre Nicolas, Saacou Djibo, Amina A. Hamidou, Bernard Tenebray, Raymond Borrow, Suzanne Chanteau   +6 more
doaj   +1 more source

Ground state cooling of a nanomechanical resonator in the weak-confinement regime via quantum interference

, 2009
Ground state cooling of a nanomechanical resonator coupled to a superconducting flux qubit is discussed. We show that by inducing quantum interference to cancel detrimental carrier excitations, ground state cooling becomes possible in the weak ...
Evers, J., Xia, K.
core   +1 more source

Expression of a Novel P22 ORFan Gene Reveals the Phage Carrier State in Salmonella Typhimurium

PLoS Genetics, 2013
We discovered a novel interaction between phage P22 and its host Salmonella Typhimurium LT2 that is characterized by a phage mediated and targeted derepression of the host dgo operon.
William Cenens, M. T. Mebrhatu, Angella Makumi, P. Ceyssens, R. Lavigne, R. Van Houdt, F. Taddei, A. Aertsen   +7 more
semanticscholar   +1 more source

Why and When Are Evidence‐Based Interventions Adopted in Paediatric Supportive Care? A Qualitative Exploration of the Determinants of Photobiomodulation Implementation

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Oral mucositis is a common and debilitating side effect of childhood cancer and stem cell transplant treatments. It affects the quality of life of children and young people (CYP) and places a strain on services. Photobiomodulation is recommended for oral mucositis prevention in international guidance but is poorly implemented in UK ...
Claudia Heggie, Kara A. Gray‐Burrows, Peter F. Day, Bob Phillips, Carl A. Thompson   +4 more
wiley   +1 more source

Stochastic Simulation of Endemic Salmonella enterica Serovar Typhi: The Importance of Long Lasting Immunity and the Carrier State

PLoS ONE, 2013
Background Typhoid fever caused by Salmonella enterica serovar Typhi (S. Typhi) remains a serious burden of disease, especially in developing countries of Asia and Africa. It is estimated that it causes 200,000 deaths per year, mainly in children.
A. Saul, Tom Smith, N. Maire
semanticscholar   +1 more source