Results 31 to 40 of about 3,649,359 (324)

Electron pumping in graphene mechanical resonators

open access: yes, 2012
The combination of high frequency vibrations and metallic transport in graphene makes it a unique material for nano-electromechanical devices. In this letter, we show that graphene-based nano-electromechanical devices are extremely well suited for charge
Azuma Y.   +38 more
core   +1 more source

Energy Relaxation in Nonlinear One-Dimensional Lattices [PDF]

open access: yes, 2001
We study energy relaxation in thermalized one-dimensional nonlinear arrays of the Fermi-Pasta-Ulam type. The ends of the thermalized systems are placed in contact with a zero-temperature reservoir via damping forces.
A. Bikaki   +51 more
core   +3 more sources

Development and application of new technologies and equipment for in-line pipeline inspection

open access: yesNatural Gas Industry B, 2019
In-line inspection is one of the most effective technical measures to ensure the safety of oil and gas pipelines. However, the extensive application of oil and gas pipelines of high-carbon steel, large diameter, high pressure and high flow rate in recent
Tiehua Hu, Jingbo Guo
doaj   +1 more source

The Generation of ULF/ELF/VLF Waves in the Ionosphere by Modulated Heating

open access: yesUniverse, 2021
One of the most important effects of ionospheric modification by high power, high frequency (HF) waves is the generation of ultra low frequency/extremely low frequency/very low frequency (ULF/ELF/VLF) waves by modulated heating.
Zhe Guo, Hanxian Fang, Farideh Honary
doaj   +1 more source

A rotating cavity for high-field angle-dependent microwave spectroscopy of low-dimensional conductors and magnets

open access: yes, 2005
The cavity perturbation technique is an extremely powerful method for measuring the electrodynamic response of a material in the millimeter- and sub-millimeter spectral range (10 GHz to 1 THz), particularly in the case of high-field/frequency magnetic ...
Bonn D. A.   +13 more
core   +1 more source

Potential Early Risk Biomarkers for Reduced Forced Expiratory Volume in Children Post‐Hematopoietic Cell Transplantation

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT We sought to identify potential early risk biomarkers for lung disease in children post‐allogeneic HCT. Patients with pulmonary function tests 3 months post‐transplant and plasma samples between days 7 and 14 post‐HCT were included. Six of 27 subjects enrolled had reduced forced expiratory volume 1 (FEV1) z scores.
Isabella S. Small   +3 more
wiley   +1 more source

Role of nasal high-frequency oscillatory ventilation in a premature infant with severe bronchopulmonary dysplasia

open access: yesRespiratory Medicine Case Reports
To prevent the worsening of bronchopulmonary disease (BPD), early extubation is desirable. However, in extremely preterm infants, BPD tends to become severe, making early extubation difficult and leading to prolonged intubation.
Akiho Ueda-Kuramochi   +6 more
doaj   +1 more source

Window of Visibility in the Display and Capture Process [PDF]

open access: yesInternational Journal of Electronics and Telecommunications, 2018
In normal conditions, the Critical Flicker Frequency is usually 60Hz. But in some special conditions, such as low spatial frequency and high contrast between frames, these special conditions have high probability to occur in some TPVMbased applications ...
Feng Xiong, Guangtao Zhai, Yi Zhang
doaj   +1 more source

Optimisation of an ultrasonic drill horn for planetary subsurface sample retrieval [PDF]

open access: yes, 2011
Ultrasonic tools can cut through foodstuffs, biological material and other soft matter with relative ease. However, when attempts are made to cut through harder material, the rate of progress markedly declines.
Harkness, Patrick, Lucas, Margaret
core  

Influence of length and measurement geometry on magnetoimpedance in La0.7Sr0.3MnO3

open access: yes, 2009
We show that ac magnetoresistance at room temperature in La0.7Sr0.3MnO3 is extremely high (= 47% in H = 100 mT, f = 3-5 MHz), and magnetic field dependence of reactance exhibits a double peak behavior.
A. Rebello, R. Mahendiran, Tokura Y.
core   +1 more source

Home - About - Disclaimer - Privacy