keyword
MENU ▼
Read by QxMD icon Read
search

simulation center

keyword
https://www.readbyqxmd.com/read/28430480/superconducting-grid-bus-surface-code-architecture-for-hole-spin-qubits
#1
Simon E Nigg, Andreas Fuhrer, Daniel Loss
We present a scalable hybrid architecture for the 2D surface code combining superconducting resonators and hole-spin qubits in nanowires with tunable direct Rashba spin-orbit coupling. The backbone of this architecture is a square lattice of capacitively coupled coplanar waveguide resonators each of which hosts a nanowire hole-spin qubit. Both the frequency of the qubits and their coupling to the microwave field are tunable by a static electric field applied via the resonator center pin. In the dispersive regime, an entangling two-qubit gate can be realized via a third order process, whereby a virtual photon in one resonator is created by a first qubit, coherently transferred to a neighboring resonator, and absorbed by a second qubit in that resonator...
April 7, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28429940/density-functional-theory-and-car-parrinello-molecular-dynamics-study-of-the-hydrogen-producing-mechanism-of-the-co-dmgbf2-2-and-co-dmgh-2-cobaloxime-complexes-in-the-acetonitrile-water-solvent
#2
Jinfan Chen, Patrick H-L Sit
The catalytic hydrogen-producing processes of two prototypical cobaloxime catalysts Co(dmgBF2)2 (dmgBF2=difluoroboryl-dimethylglyoxime) and Co(dmgH)2 (dmgH=dimethylglyoxime), were studied by Density Functional Theory (DFT) and Car-Parrinello molecular dynamics (CPMD) simulations in the explicit acetonitrile-water solvent. Our study demonstrates the key role of water molecules as shuttles to deliver protons to the cobalt active centers of these catalysts. However, the transfer of protons to the cobalt centers also competes with the diffusion of the proton away from the complex via the hydrogen bond network of water...
April 21, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28429723/pressure-self-focusing-effect-and-novel-methods-for-increasing-the-maximum-pressure-in-traditional-and-rotational-diamond-anvil-cells
#3
Biao Feng, Valery I Levitas
The main principles of producing a region near the center of a sample, compressed in a diamond anvil cell (DAC), with a very high pressure gradient and, consequently, with high pressure are predicted theoretically. The revealed phenomenon of generating extremely high pressure gradient is called the pressure self-focusing effect. Initial analytical predictions utilized generalization of a simplified equilibrium equation. Then, the results are refined using our recent advanced model for elastoplastic material under high pressures in finite element method (FEM) simulations...
April 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28427153/comparison-between-proton-boron-fusion-therapy-pbft-and-boron-neutron-capture-therapy-bnct-a-monte-carlo-study
#4
Joo-Young Jung, Do-Kun Yoon, Brendan Barraclough, Heui Chang Lee, Tae Suk Suh, Bo Lu
The aim of this study is to compare between proton boron fusion therapy (PBFT) and boron neutron capture therapy (BNCT) and to analyze dose escalation using a Monte Carlo simulation. We simulated a proton beam passing through the water with a boron uptake region (BUR) in MCNPX. To estimate the interaction between neutrons/protons and borons by the alpha particle, the simulation yielded with a variation of the center of the BUR location and proton energies. The variation and influence about the alpha particle were observed from the percent depth dose (PDD) and cross-plane dose profile of both the neutron and proton beams...
February 25, 2017: Oncotarget
https://www.readbyqxmd.com/read/28425884/a-brief-course-on-clinical-communication-skills-a-multi-centered-study
#5
Camila Franco, Renato Franco, Milton Severo, Maria Amélia Ferreira
INTRODUCTION: This paper describes and analyses the results of a multicenter course on clinical communication skills with the use of the learning in small groups, patient actors and feedback. The aim of the course was to encourage participants to develop a more effective clinical communication to recognize the different manifestations of the same disease in different patients (disease versus illness). MATERIAL AND METHODS: The course was applied to third and fourth year medical students in three Brazilian universities and one university in Portugal...
December 30, 2016: Acta Médica Portuguesa
https://www.readbyqxmd.com/read/28425524/excited-state-relaxation-processes-of-h2-evolving-ru-pd-supramolecular-photocatalysts-containing-a-linear-or-non-linear-bridge-a-dft-and-tddft-study
#6
Jun Cao, Yun Zhou
In this study, the early-time excited state relaxation processes of bimetallic Ru-Pd supramolecular photocatalysts containing a linear 2,2':5',2''-terpyridine or a nonlinear 2,2':6',2''-terpyridine bridging ligand (BL) were investigated by density functional theory (DFT) and time-dependent DFT (TDDFT) approaches. The bridge based metal-to-ligand charge transfer triplet ((3)MLCT) state of the metal complex containing a linear bridging ligand was calculated to be the lowest energy triplet (T1) state which is closely related to the photocatalytic H2 production, while for that having a nonlinear bridging ligand, the T1 state is a Ru metal-centered (MC) triplet ((3)MCRu) state that is short-lived and rapidly decays to the ground electronic state (S0)...
April 20, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28424904/nanoindentation-response-of-cortical-bone-dependency-of-subsurface-voids
#7
Masoud Ramezanzadehkoldeh, Bjørn Skallerud
Nanoindentation test results in the axial direction of mouse femurs were the basis for the current study. Although the majority of the nanoindentation curves showed a reasonable consistency, some curves showed a significantly softer response. Detailed investigation, using focused ion beam-scanning electron microscopy, provided that the softer response is due to subsurface cavities such as lacunae. Finite element models were developed to simulate the nanoindentation of mice femur cortical bone samples with and without the incorporation of a single lacuna underneath the bone surface...
April 19, 2017: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/28424847/characterization-of-microtubule-buckling-in-living-cells
#8
Carla Pallavicini, Alejandro Monastra, Nicolás González Bardeci, Diana Wetzler, Valeria Levi, Luciana Bruno
Microtubules are filamentous biopolymers involved in essential biological processes. They form key structures in eukaryotic cells, and thus it is very important to determine the mechanisms involved in the formation and maintenance of the microtubule network. Microtubule bucklings are transient and localized events commonly observed in living cells and characterized by a fast bending and its posterior relaxation. Active forces provided by molecular motors have been indicated as responsible for most of these rapid deformations...
April 19, 2017: European Biophysics Journal: EBJ
https://www.readbyqxmd.com/read/28422779/the-utility-of-high-fidelity-simulation-for-training-critical-care-fellows-in-the-management-of-extracorporeal-membrane-oxygenation-emergencies-a-randomized-controlled-trial
#9
Bishoy M Zakhary, Lily M Kam, Brian S Kaufman, Kevin J Felner
OBJECTIVE: Although extracorporeal membrane oxygenation volume has increased, proficiency in the technology requires extensive training. We compared traditional water-drill-based extracorporeal membrane oxygenation training with simulation-based extracorporeal membrane oxygenation training with the hypothesis that simulation-based training is superior. DESIGN: Randomized controlled trial. SETTING: Academic medical center. SUBJECTS: Pulmonary/critical care fellows...
April 18, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28422700/adaptive-fuzzy-control-for-nonstrict-feedback-systems-with-unmodeled-dynamics-and-fuzzy-dead-zone-via-output-feedback
#10
Lijie Wang, Hongyi Li, Qi Zhou, Renquan Lu
This paper investigates the problem of observer-based adaptive fuzzy control for a category of nonstrict feedback systems subject to both unmodeled dynamics and fuzzy dead zone. Through constructing a fuzzy state observer and introducing a center of gravity method, unmeasurable states are estimated and the fuzzy dead zone is defuzzified, respectively. By employing fuzzy logic systems to identify the unknown functions. And combining small-gain approach with adaptive backstepping control technique, a novel adaptive fuzzy output feedback control strategy is developed, which ensures that all signals involved are semi-globally uniformly bounded...
April 12, 2017: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/28422635/simulated-driving-skills-evaluation-of-teenagers-with-attention-deficit-hyperactivity-disorder-before-driving-lessons
#11
Navah Zelda Ratzon, Efrat Kadury Lunievsky, Arie Ashkenasi, Joseph Laks, Herman Avner Cohen
OBJECTIVE: We evaluated the driving skills of teenagers with attention deficit hyperactivity disorder (ADHD) during simulated driving before starting driving lessons and observed whether methylphenidate (MPH) affected their performance. METHOD: Sixty teenagers ages 15-18 yr were included; 29 teenagers with ADHD were tested with and without MPH, and 31 teenagers (control group) were tested once. All participants were tested on the STISIM Drive™ simulator. RESULTS: The number of center-line crossings was higher in the group without MPH treatment than in the control group and the MPH-treated group...
May 2017: American Journal of Occupational Therapy: Official Publication of the American Occupational Therapy Association
https://www.readbyqxmd.com/read/28422069/protein-stability-and-unfolding-following-glycine-radical-formation
#12
Michael C Owen, Imre G Csizmadia, Béla Viskolcz, Birgit Strodel
Glycine (Gly) residues are particularly susceptible to hydrogen abstraction; which results in the formation of the capto-dative stabilized Cα-centered Gly radical (GLR) on the protein backbone. We examined the effect of GLR formation on the structure of the Trp cage; tryptophan zipper; and the villin headpiece; three fast-folding and stable miniproteins; using all-atom (OPLS-AA) molecular dynamics simulations. Radicalization changes the conformation of the GLR residue and affects both neighboring residues but did not affect the stability of the Trp zipper...
April 19, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28420648/association-of-magnet-status-with-hospitalization-outcomes-for-ischemic-stroke-patients
#13
Kimon Bekelis, Symeon Missios, Todd A MacKenzie
BACKGROUND: It is not clear whether Magnet recognition by the American Nurses Credentialing Center (nursing excellence program) is associated with improved patient outcomes. We investigated whether hospitalization in a Magnet hospital is associated with improved outcomes for patients with ischemic stroke. METHODS AND RESULTS: We performed a cohort study of patients with ischemic stroke from 2009 to 2013, who were registered in the New York Statewide Planning and Research Cooperative System database...
April 18, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28419484/variations-in-the-functional-visual-field-for-detection-of-lung-nodules-on-chest-computed-tomography-impact-of-nodule-size-distance-and-local-lung-complexity
#14
Lukas Ebner, Martin Tall, Kingshuk Roy Choudhury, Donald L Ly, Justus E Roos, Sandy Napel, Geoffrey D Rubin
PURPOSE: To explore the characteristics that impact lung nodule detection by peripheral vision when searching for lung nodules on chest CT-scans. METHODS: This study was approved by the local IRB and HIPAA compliant. A simulated primary (1°) target mass (2 x 2 x 5 cm) was embedded into 5-cm thick sub-volumes (SV) extracted from three unenhanced lung MDCT-scans (64-row, 1.25 mm thickness, 0.7 mm increment). One of 30 solid, secondary nodules with either 3-4 mm and 5-8 mm diameters were embedded into 192 of 207 SVs...
April 17, 2017: Medical Physics
https://www.readbyqxmd.com/read/28419016/an-evaluation-of-a-new-debriefing-framework-reflect
#15
Lauren E Zinns, Paul C Mullan, Karen J OʼConnell, Leticia M Ryan, Angela T Wratney
BACKGROUND: Postresuscitation debriefing (PRD) is recommended by the American Heart Association guidelines but is infrequently performed. Prior studies have identified barriers for pediatric emergency medicine (PEM) fellows including lack of a standardized curriculum. OBJECTIVE: Our objective was to create and assess the feasibility of a time-limited, structured PRD framework entitled REFLECT: Review the event, Encourage team participation, Focused feedback, Listen to each other, Emphasize key points, Communicate clearly, and Transform the future...
April 18, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/28417978/efficient-heat-dissipation-of-uncooled-400-gbps-16%C3%A3-25-gbps-optical-transceiver-employing-multimode-vcsel-and-pd-arrays
#16
Tien-Tsorng Shih, Yu-Chieh Chi, Ruei-Nian Wang, Chao-Hsin Wu, Jian-Jang Huang, Jau-Ji Jou, Tai-Cheng Lee, Hao-Chung Kuo, Gong-Ru Lin, Wood-Hi Cheng
An effective heat dissipation of uncooled 400-Gbps (16×25-Gbps) form-factor pluggable (CDFP) optical transceiver module employing chip-on-board multimode 25-Gbps vertical-surface-emitting-laser (VCSEL) and 25-Gbps photodiode (PD) arrays mounted on a brass metal core embedded within a printed circuit board (PCB) is proposed and demonstrated. This new scheme of the hollow PCB filling with thermally-dissipated brass metal core was simulated and used for high temperature and long term stability operation of the proposed 400-Gbps CDFP transceiver...
April 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28417543/efficiency-of-cathodoluminescence-emission-by-nitrogen-vacancy-color-centers-in-nanodiamonds
#17
Huiliang Zhang, David R Glenn, Richard Schalek, Jeff W Lichtman, Ronald L Walsworth
Correlated electron microscopy and cathodoluminescence (CL) imaging using functionalized nanoparticles is a promising nanoscale probe of biological structure and function. Nanodiamonds (NDs) that contain CL-emitting color centers are particularly well suited for such applications. The intensity of CL emission from NDs is determined by a combination of factors, including particle size, density of color centers, efficiency of energy deposition by electrons passing through the particle, and conversion efficiency from deposited energy to CL emission...
April 18, 2017: Small
https://www.readbyqxmd.com/read/28415441/stress-stiffened-silicon-nitride-micro-bridges-array-as-substrate-with-tunable-stiffness-for-cell-culture
#18
Jianfeng Chen, Guangli Liu, Chengfu Ma, Gang Zhao, Wenqiang Du, Wulin Zhu, Jiaru Chu
Recently, interactions between one-dimensional structural stiffness of physical micro environments and cell biological process have been widely studied. However in previous studies, the influence of structural stiffness on biological process was coupled with the influence of micro fiber curvature. Therefore decoupling the influences of fiber curvature and structural stiffness on cell biological process is of prime importance. In this study, we proposed a novel cell culture substrate comprised of silicon nitride bridges whose structure stiffness can be regulated by altering the axial residual stress without changing material and geometry properties...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28415249/traveling-waves-and-breathers-in-an-excitatory-inhibitory-neural-field
#19
Stefanos E Folias
We study existence and stability of traveling activity bump solutions in an excitatory-inhibitory (E-I) neural field with Heaviside firing rate functions by deriving existence conditions for traveling bumps and an Evans function to analyze their spectral stability. Subsequently, we show that these existence and stability results reduce, in the limit of wave speed c→0, to the equivalent conditions developed for the stationary bump case. Using the results for the stationary bump case, we show that drift bifurcations of stationary bumps serve as a mechanism for generating traveling bump solutions in the E-I neural field as parameters are varied...
March 2017: Physical Review. E
https://www.readbyqxmd.com/read/28415240/density-functional-theory-for-fluid-solid-and-solid-solid-phase-transitions
#20
Atul S Bharadwaj, Yashwant Singh
We develop a theory to describe solid-solid phase transitions. The density functional formalism of classical statistical mechanics is used to find an exact expression for the difference in the grand thermodynamic potentials of the two coexisting phases. The expression involves both the symmetry conserving and the symmetry broken parts of the direct pair correlation function. The theory is used to calculate phase diagram of systems of soft spheres interacting via inverse power potentials u(r)=ε(σ/r)^{n}, where parameter n measures softness of the potential...
March 2017: Physical Review. E
keyword
keyword
53851
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"