Results 21 to 30 of about 33,794 (304)

Influence of static load on airflow resistivity determination [PDF]

open access: yes, 2008
The effect of static load on flow resistivity of sound absorbing materials and the influence on the measurement of the dynamic stiffness of materials used in building acoustic are presented. The apparatus built at INRiM is shown and a simplified model of
F. ALASIA   +7 more
core   +1 more source

Effect of ionic liquids modified nano-TiO2 as additive on tribological properties of silicone grease

open access: yesMaterials Research Express, 2021
A series of silicon greases were fabricated by using polytetrafluoroethylene as thickening agent and polydimethylsiloxane as base oil. Four kinds of ionic liquids modified nano-titanium dioxide were employed as solid additives with different ...
Lining Wu   +4 more
doaj   +1 more source

Pulmonary Vascular Volume, Resistance, and Compliance in Man [PDF]

open access: yesCirculation, 1960
Pulmonary blood volume was measured in 19 patients, with use of a dye-dilution method and simultaneous bilateral cardiac catheterization. Pulmonary mean transit time was measured by subtracting left atrial-to-peripheral artery mean transit time from pulmonary artery-to-peripheral artery mean transit time.
W R, MILNOR, A D, JOSE, C J, MCGAFF
openaire   +2 more sources

Effect and importance of static-load on airflow resistivity determination and its consequences on dynamic stiffness [PDF]

open access: yes, 2011
Airflow resistivity is a physical parameter which characterizes porous and fibrous sound absorbent materials. It is well-known that such property allows the evaluation of the acoustic behaviour of sound absorbent materials in various fields of ...
SCHIAVI, ALESSANDRO   +5 more
core   +1 more source

Geometrical and electrical properties of NTC polycrystalline thermistors vs. Changes of sintering parameters [PDF]

open access: yesScience of Sintering, 2006
NTC thermistor powder was made of a Mn, Ni, Fe and Co oxide mixture calcinated at 1050°C / 60 min. The powder was milled in a ball mill down to an average particle diameter of 0.9 μm.
Savić S.M.   +3 more
doaj   +1 more source

VOLUME ELECTRICAL RESISTIVITY OF FLAX SINGLE JERSEY WEFT-KNITTED FABRICS [PDF]

open access: yes, 2022
The aim of this work was to investigate the volume electrical resistivity of three plain single jersey weft-knitted fabrics produced from the same flax yarn but with different structural characteristics.
Kostić, Mirjana   +5 more
core  

Cyclic thermoresistivity of resin-based carbon fiber bars modified with mixed carbon powder and nano-silica

open access: yesMaterials Research Express, 2023
The addition of conductive fillers to the carbon fiber bar reduces its resistivity and improves electrical stability. Unstable conductivity and susceptibility to ambient temperature change impede the application of this technique in engineering, unless ...
Dan Liu   +4 more
doaj   +1 more source

Resistance Training Volume Load with and without Exercise Displacement [PDF]

open access: yesSports, 2018
Monitoring the resistance training volume load (VL) (sets × reps × load) is essential to managing resistance training and the recovery–adaptation process. Subjects: Eight trained weightlifters, seven of which were at national level, participated in the study.
W. Guy Hornsby   +5 more
openaire   +5 more sources

Nuclear magnetic resonance features of low-permeability reservoirs with complex wettability

open access: yesPetroleum Exploration and Development, 2017
The nuclear magnetic resonance T2 spectra of low-permeability reservoirs with complex wettability were studied using the samples from the Chang 8 Member, Upper Triassic Yanchang Formation, Ordos Basin, China.
Cheng FENG   +6 more
doaj   +1 more source

Study on Electrical Properties of PALF Reinforced Bisphenol-A Composite

open access: yesMATEC Web of Conferences, 2018
These days, composite materials successfully substitute the traditional materials due to its various significant applications. This paper examines the influence of fiber orientation and fiber length on electrical properties of PALF reinforced Bisphenol-A
Vinod B., Sudev L. J.
doaj   +2 more sources

Home - About - Disclaimer - Privacy