Results 31 to 40 of about 44,850 (204)
Full and half-wavelength ultrasonic percussive drills [PDF]
, 2018 Ultrasonic-percussive drills are a leading technology for small rock drilling applications where power and weight-on-bit are at a premium. The concept uses ultrasonic vibrations to excite an oscillatory motion in a free-mass, which then delivers ...
Harkness, Patrick +2 more
core +1 more source
Diagnostics of Corrosion Protection Potential for Electric Water Heaters [PDF]
MATEC Web of Conferences, 2019 The paper represents the mathematical model for diagnostics of the corrosion protection potential for the electric water heaters (EWH). The research objectives are the problem of determining the EWH corrosion protection technical condition during its ...
Martynyuk Valeriy +2 more
doaj +1 more source
Pulmonary Functions and Inflammatory Biomarkers in Post-Pulmonary Tuberculosis Sequelae [PDF]
Tuberculosis and Respiratory Diseases, 2022 Background Post-tuberculosis (TB) sequelae is a commonly encountered clinical entity, especially in high TB burden countries. This may represent chronic anatomic sequelae of previously treated TB, with frequent symptomatic presentation.
Kumar Shanmugasundaram +3 more
doaj +1 more source
A Test Method for Acoustic Emission Properties of Natural Cellulose Fiber-Reinforced Composites
Applied Sciences, 2021 To test the acoustic performance of fiber-reinforced composites for replacing wood, an acoustic vibration test method is developed. For evaluation of the test method, composites are manufactured using hemp and ramie embedded in epoxy, through vacuum ...
Fanxizi Liu +5 more
doaj +1 more source
Investigations on the Performance of Various Horizontal Ground Electrodes
Energies, 2021 Experimental work on grounding systems has shown that the characteristics of grounding systems under high impulse conditions are different than those obtained at steady-state conditions.
Hanis Hamizah Hizamul-Din +4 more
doaj +1 more source
Reference values of respiratory impedance with impulse oscillometry in healthy Chinese adults [PDF]
Journal of Thoracic Disease, 2020 Abstract Background: Impulse oscillometry (IOS) is a non-invasive pulmonary function test for measuring respiratory impedance. Available reference equations of IOS indices for adults are limited. The aim of this study was to develop reference equations of IOS indices for Chinese adults.Methods: In a multicentral, cross-sessional study of ...
Xiaolin Liang +11 more
openaire +2 more sources
Resonant pumping in a multilayer impedance pump [PDF]
, 2008 This paper introduces the concept of multilayer impedance pump, a novel pumping mechanism inspired by the embryonic heart structure. The pump is a composite two-layer fluid-filled elastic tube featuring a thick gelatinous internal.
Avrahami, I., Gharib, M., Loumes, L.
core +1 more source
Highly efficient impulse-radio ultra-wideband cavity-backed slot antenna in stacked air-filled substrate integrated waveguide technology [PDF]
, 2018 An impulse-radio ultra-wideband (IR-UWB) cavity-backed slot antenna covering the [5.9803; 6.9989] GHz frequency band of the IEEE 802.15.4a-2011 standard is designed and implemented in an air-filled substrate integrated waveguide (AFSIW) technology for ...
Lemey, Sam +3 more
core +1 more source
Energies, 2021 Ionisation can occur in the soil when high impulse currents are subjected to grounding systems. This occurrence is generated by a difference in the dielectric strength value between the soil and air voids.
Hanis Hamizah Hizamul-Din +3 more
doaj +1 more source
Stability, Causality, and Passivity in Electrical Interconnect Models [PDF]
, 2007 Modern packaging design requires extensive signal integrity simulations in order to assess the electrical performance of the system. The feasibility of such simulations is granted only when accurate and efficient models are available for all system parts
Achar, R. +4 more
core +1 more source