scholarly journals EVOLUTION OF THE DIELECTRIC PROPERTIES OF SODIUM NITRITE INTRODUCED INTO ALUMINUM OXIDE NANOPORES

2021 ◽  
pp. 27-30
Author(s):  
ALEXEY VLADIMIROVICH PAVLOV ◽  
◽  
ELENA VLADIMIROVNA STUKOVA ◽  
OKSANA VASILIEVNA ZOTOVA ◽  
IRINA ANATOLYEVNA GOLUBEVA ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Dielectric Properties ◽  
Aluminum Oxide ◽  
Sodium Nitrite ◽  
Dielectric Spectroscopy ◽  
Porous Aluminum ◽  
Long Term Storage ◽  
Porous Aluminum Oxide ◽  
Term Storage

This work presents the results of studying the evolution of the dielectric properties of nanocomposite NaNO2/Al2O3 samples with pore sizes of 100 and 70 nm. The samples were examined by dielectric spectroscopy. It is shown that in nanosized sodium nitrite embedded in porous aluminum oxide, the effect of «aging» associated with the time factor is observed. A decrease in the values of the dielectric constant is observed during long-term storage of the sample under normal conditions.

Influence of Air Abrasion and Long-term Storage on the Bond Strength of Self-etching Adhesives to Dentin

10.2341/06-61 ◽  
2007 ◽  
Vol 32 (3) ◽  
pp. 217-224 ◽  
Author(s):  
F. M. G. França ◽  
A. J. S. Santos ◽  
J. R. Lovadino
Keyword(s):  
Bond Strength ◽  
Aluminum Oxide ◽  
Clinical Relevance ◽  
Air Abrasion ◽  
Long Term Storage ◽  
Term Storage ◽  
Over Time

Clinical Relevance The adhesiveness of self-etching systems, used with aluminum oxide air abrasion to dentin, decreases over time.

Dielectric Properties of Epoxy/Anhydride System in Long-Term Storage

2017 ◽  
Vol 898 ◽  
pp. 2143-2146
Author(s):  
Chun Miao Han ◽  
Kang Peng ◽  
Liu Yang ◽  
Zhi Bin Zeng
Keyword(s):  
Dielectric Properties ◽  
Loss Angle ◽  
Cooling Process ◽  
Slow Cooling ◽  
Long Term Storage ◽  
Dielectric Loss Angle ◽  
Different Content ◽  
Curing Procedure ◽  
Term Storage

The change of dielectric properties of epoxy/anhydride systems during eleven months storing was investigated. Test systems were bisphenol-A epoxy cured by different content of methyl-hexahydrophthalic anhydride with a slow cooling process across Tg range included in their curing procedure to reduce residual stress. The results showed all the systems’ dielectric constant and dielectric loss angle tangent had a trend of down then up. The highest decreasing amplitudes were about 4% and 10% respectively. Possible explanations for these phenomena were proposed, and then some preliminary investigations were carried out like DSC and IR.

Dielectric properties of porous aluminum oxide with inclusions of triglycine sulphate and Rochelle salt

2010 ◽  
Vol 74 (9) ◽  
pp. 1291-1294 ◽  
Author(s):  
O. M. Golitsyna ◽  
S. N. Drozhdin ◽  
A. E. Gridnev ◽  
V. V. Chernyshev ◽  
I. E. Zanin
Keyword(s):  
Dielectric Properties ◽  
Aluminum Oxide ◽  
Rochelle Salt ◽  
Triglycine Sulphate ◽  
Porous Aluminum ◽  
Porous Aluminum Oxide

scholarly journals Исследование фазовых переходов сегнетоэлектрика KIO-=SUB=-3-=/SUB=- в нанопористых матрицах на основе пленок Al-=SUB=-2-=/SUB=-O-=SUB=-3-=/SUB=-

2018 ◽  
Vol 60 (3) ◽  
pp. 543
Author(s):  
А.Ю. Милинский ◽  
С.В. Барышников
Keyword(s):  
Phase Transitions ◽  
Dielectric Properties ◽  
Aluminum Oxide ◽  
Structural Transition ◽  
Harmonic Amplitude ◽  
Third Harmonic ◽  
Porous Aluminum ◽  
The Third ◽  
Porous Aluminum Oxide ◽  
Composite Samples

AbstractTemperature dependences of the linear permittivity ε' and the third harmonic amplitude γ_3ω of composites prepared by introducing ferroelectrics KIO_3 into matrices of porous aluminum oxide Al_2O_3 with pore sizes of 240 nm were studied. It is found that the IV → III and III → II structural transition temperatures of potassium iodide in Al_2O_3 pores decrease by 5 K and 24 K, respectively, with respect to bulk KIO_3. The measurements of the dielectric properties do not reveal V → IV and II → I phase transitions in the composite samples.

Modelling of Moisture Movement in Wood during Outdoor Storage

2001 ◽  
Vol 6 (2) ◽  
pp. 3-14 ◽  
Author(s):  
R. Baronas ◽  
F. Ivanauskas ◽  
I. Juodeikienė ◽  
A. Kajalavičius
Keyword(s):  
Experimental Data ◽  
Finite Difference ◽  
Climatic Conditions ◽  
Two Dimensional ◽  
Moisture Movement ◽  
Finite Difference Technique ◽  
Long Term Storage ◽  
Space Formulation ◽  
Term Storage

A model of moisture movement in wood is presented in this paper in a two-dimensional-in-space formulation. The finite-difference technique has been used in order to obtain the solution of the problem. The model was applied to predict the moisture content in sawn boards from pine during long term storage under outdoor climatic conditions. The satisfactory agreement between the numerical solution and experimental data was obtained.

Trehalose: a cryoprotectant that enhances recovery and preserves function of human pancreatic islets after long-term storage

Diabetes ◽  
1997 ◽  
Vol 46 (3) ◽  
pp. 519-523 ◽  
Author(s):  
G. M. Beattie ◽  
J. H. Crowe ◽  
A. D. Lopez ◽  
V. Cirulli ◽  
C. Ricordi ◽  
...  
Keyword(s):  
Pancreatic Islets ◽  
Human Pancreatic Islets ◽  
Long Term Storage ◽  
Term Storage
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