Ag3Ni2O4—A new stage-2 intercalation compound of 2H–AgNiO2 and physical properties of 2H–AgNiO2 above ambient temperature

2007 ◽  
Vol 180 (1) ◽  
pp. 8-15 ◽  
Author(s):  
Timo Sörgel ◽  
Martin Jansen
Keyword(s):  
Physical Properties ◽  
Ambient Temperature ◽  
Intercalation Compound

scholarly journals Brazilian gutta-percha points. Part II: thermal properties

2007 ◽  
Vol 21 (1) ◽  
pp. 29-34 ◽  
Author(s):  
Cláudio Maniglia-Ferreira ◽  
Eduardo Diogo Gurgel-Filho ◽  
João Batista Araújo Silva Jr ◽  
Regina Célia Monteiro de Paula ◽  
Judith Pessoa Andrade Feitosa ◽  
...  
Keyword(s):  
Differential Scanning Calorimetry ◽  
Thermal Properties ◽  
Physical Properties ◽  
Ambient Temperature ◽  
Amorphous Phase ◽  
Thermal Behaviour ◽  
Chemical Structure ◽  
Scanning Calorimetry ◽  
Gutta Percha ◽  
Thermal Manipulation

This study was undertaken to explore the effect of heating on gutta-percha, analyzing the occurrence of endothermic peaks corresponding to the transformation that occurs in the crystalline structure of the polymer during thermal manipulation. This study also seeked to determine the temperature at which these peaks occur, causing a transformation from the beta- to the alpha-form, and from the alpha- to the amorphous phase. Eight nonstandardized gutta-percha points commercially available in Brazil (Konne, Tanari, Endopoint, Odous, Dentsply 0.04, Dentsply 0.06, Dentsply TP, Dentsply FM) and pure gutta-percha (control) were analysed using differential scanning calorimetry (DSC) and thermogravimetry analysis (TGA). The transition temperatures were determined and analysed. With the exception of Dentsply 0.04 and Dentsply 0.06, the majority of the products showed thermal behaviour typical of beta-gutta-percha, with two endothermic peaks, exhibiting two crystalline transformations upon heating from ambient temperature to 130°. Upon cooling and reheating, few samples presented two endothermic peaks. It was concluded that heating dental gutta-percha to 130°C causes changes to its chemical structure which permanently alter its physical properties.

scholarly journals Optical Study to Doping Carbon with TiO2 that Utilizing in Thermal Concentration

2017 ◽  
Vol 2 (2) ◽  
pp. 109-113 ◽  
Author(s):  
Rasheed N. Abed ◽  
Nabeel K. Al-Sahib ◽  
Abdul Jabar N. Khalifa
Keyword(s):  
Optical Properties ◽  
Data Analysis ◽  
Solar Energy ◽  
Physical Properties ◽  
Ambient Temperature ◽  
Energy Gap ◽  
Optical Measurement ◽  
Optical Information ◽  
Optical Study ◽  
Electrical Behavior

The optical properties of TiO2/C in the district from (200-2000 nm) were examined by setting up the composites with wt. % concentration. The optical information evaluated and translated regarding the hypothesis of phonon-assisted direct electronic change; it is watched that the energy is influenced by doping sort of mineral composite utilized. The doping manufactured powders were examined through data analysis to validate the presence of these elements. This investigation for the influence of TiO2 was an addition on the microstructure of the carbon and electrical behavior of the composite was detected, this doped was gotten in a dry place at ambient temperature and its effect was studied from the physical properties of the energy gap. The optical measurement of the specimen was measured as a component of wavelength (λ), absorptivity that exhibit good results to absorb the solar energy for selective surfaces.

scholarly journals PREPARATION AND PHYSICAL PROPERTIES OF INTERCALATION COMPOUND Li1+xV3O8

1988 ◽  
Vol 37 (7) ◽  
pp. 1217
Author(s):  
WANG GANG ◽  
CAO QI-JUAN ◽  
LI MI-GONG ◽  
DENG QUN-ZHOU ◽  
LI LI-MAN ◽  
...  
Keyword(s):  
Physical Properties ◽  
Intercalation Compound

Physical Properties of Polystyrene as Influenced by Temperature

1942 ◽  
Vol 15 (3) ◽  
pp. 639-646
Author(s):  
T. S. Carswell ◽  
R. F. Hayes ◽  
H. K. Nason
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Flexural Strength ◽  
Physical Properties ◽  
Ambient Temperature ◽  
Injection Moulding ◽  
Quantitative Data ◽  
Plastic Materials ◽  
Commercial Process

Abstract The physical properties of plastics are markedly influenced by the ambient temperature, but comparatively few quantitative data on polystyrene have been published. The variation of flexural strength and deflection at break for compression-moulded polystyrene and for a number of other compression-moulded plastic materials at temperatures from —70° to +200° C was described by Nitsche and Salewski. Jenckel and Lagally determined the tensile strength of extruded polystyrene filaments at 30° to 60° C. The elongation at 20° to 90° C was reported for extruded and racked polystyrene foil by Müller. Since the mechanical properties of plastic materials are profoundly influenced by the methods used in preparing the test specimens, data on such properties are meaningless unless the details of preparation also are known. This paper describes variations in some of the mechanical properties of injection-moulded polystyrene over the range from —75° to +100° C. This method was chosen because injection moulding is by far the most commonly Used commercial process for the fabrication of polystyrene.

The Photometric Properties of the Ap Stars

1976 ◽  
Vol 32 ◽  
pp. 365-377 ◽  
Author(s):  
B. Hauck
Keyword(s):  
Physical Properties ◽  
Ap Stars

The Ap stars are numerous - the photometric systems tool It would be very tedious to review in detail all that which is in the literature concerning the photometry of the Ap stars. In my opinion it is necessary to examine the problem of the photometric properties of the Ap stars by considering first of all the possibility of deriving some physical properties for the Ap stars, or of detecting new ones. My talk today is prepared in this spirit. The classification by means of photoelectric photometric systems is at the present time very well established for many systems, such as UBV, uvbyβ, Vilnius, Geneva and DDO systems. Details and methods of classification can be found in Golay (1974) or in the proceedings of the Albany Colloquium edited by Philip and Hayes (1975).

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