Results 121 to 130 of about 728,970 (370)

EFFECT OF SOLUTION PROPERTIES ON FIBER DIAMETERS OF POLYVINYL ALCOHOL NANOFIBROUS MATS [PDF]

open access: yesAnnals of the University of Oradea: Fascicle of Textiles, Leatherwork, 2020
In this study, PVA (polyvinyl alcohol) solutions with different concentrations (8, 10, 12, 14, 16 and 18 wt %) were prepared and nanofibers were produced with changing system parameters via electrospinning.
KOC Muhammed Zahid, KESKIN Reyhan
doaj  

Post glacial rebounds measure the viscosity of the lithosphere [PDF]

open access: yesarXiv, 2003
The observed higher uplift rates before the end of deglaciation requires the existence of a low viscosity channel or layer. The uplifts observed after the end of deglaciation does not show any contribution from this low viscosity channel and a homogeneous viscosity model fits very well to the observed uplift.
arxiv  

Note on the Standard of Relative Viscosity, and on “Negative Viscosity.” [PDF]

open access: yesProceedings of the Royal Society of Edinburgh, 1906
The absolute viscosity calculated from the formula(where p = the pressure, t the time, r the radius, l the length of capillary, and v the volume of liquid), which connects the viscosity of a liquid with the rate of flow through a long capillary tube, is not often made use of, mainly on account of the difficulty of accurately determining some of the ...
openaire   +3 more sources

Hybrid Framework Materials: Next‐Generation Engineering Materials

open access: yesAdvanced Engineering Materials, EarlyView.
Hybrid organic–inorganic materials merge the unique properties of organic and inorganic compounds, enabling applications in optoelectronics, gas storage, and catalysis. This review explores metal‐organic frameworks, hybrid organic–inorganic perovskites, and the emerging field of hybrid glasses, emphasizing their structures, functionalities, and ...
Jay McCarron   +2 more
wiley   +1 more source

Viscosity of Cu-Zn alloys [PDF]

open access: yesMetalurgija, 2011
One of the basic parameters that characterize a liquid phase is its viscosity. In the paper, the results of viscosity measurements for copper, copper-zinc alloys with 5 %wt. Zn and 10 %wt.
G. Siwiec, J. Łabaj
doaj  

An Examination of Aerosol Jet‐Printed Surface Roughness and its Impact on the Performance of High‐Frequency Electronics

open access: yesAdvanced Engineering Materials, EarlyView.
This study explores aerosol jet‐printed (AJP) surface roughness, its effects on the performance of microwave electronics, and its process contributors. First, an electromagnetic model is vetted for AJP's unique roughness signature. Simulations are built which show process‐induced roughness is as significant as conductor resistivity in driving microwave
Christopher Areias, Alkim Akyurtlu
wiley   +1 more source

Viscosity solutions of Hamilton--Jacobi equations with discontinuous coefficients [PDF]

open access: yesarXiv, 2003
We consider Hamilton--Jacobi equations, where the Hamiltonian depends discontinuously on both the spatial and temporal location. Our main results are the existence and well--posedness of a viscosity solution to the Cauchy problem. We define a viscosity solution by treating the discontinuities in the coefficients analogously to ``internal boundaries ...
arxiv  

Design and Evaluation of 3D‐Printed Polylactic Acid Composites Reinforced with Biodegradable Bamboo Powder and Jute Powder

open access: yesAdvanced Engineering Materials, EarlyView.
The study investigates 3D‐printed polylactic acid (PLA) composites with biodegradable bamboo and jute powder fillers. Mechanical, thermal, structural properties, and rheological behavior are discussed to evaluate composite performance. Morphological characterization indicates uniform dispersion and adhesion of the fillers in the PLA matrix with the ...
Vimukthi Dananjaya   +4 more
wiley   +1 more source

Performance and some intestinal functions of broilers fed diets with different inclusion levels of sunflower meal and supplemented or not with enzymes

open access: yesBrazilian Journal of Poultry Science, 2015
Enzyme supplementation of diets enhances broiler performance by improving some of the basic production parameters such as average feed intake, feed conversion ratio, or average weight gain.
MP Horvatovic   +3 more
doaj   +1 more source

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