On the validity of crystallization kinetics parameters derived from the depolarized light intensity (DLI) technique: An experimental study of polyvinylidene fluoride

This work aims to investigate the crystallization kinetics of β-spodumene/cordierite glass-ceramics. Thus, three glasses with compositions based predominantly on cordierite (C), β-spodumene (L) and in a molar ratio 1:1 of both phases (CL) were prepared. The kinetics parameters such as activation energy for crystallization (ranging from 160 to 358 kJ/mol) and Avrami exponent (ranging from 1.4 to 10.7) were determined by means of non-isothermal methods using differential scanning calorimetry (DSC). Additionally, the samples were crystalized according to DSC analyses and characterized by using x-ray diffraction (XRD). The main detected crystalline phases were β-spodumene to the glass L, cordierite to the glass C and β-quartz, mulite and spinel to the glass CL. Considering the thermal and electrical properties of these crystalline phases, these glass-ceramics have potential use for LTCC (Low Thermal Co-fired Ceramics) applications.

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An experimental study of Phototactic responses of Tanytarsus barbitarsis Freeman (Diptera: Chironomidae

Marine and Freshwater Research ◽

10.1071/mf9890693 ◽

1989 ◽

Vol 40 (6) ◽

pp. 693 ◽

Cited By ~ 2

Author(s):

MJ Kokkinn ◽

WD Williams

Keyword(s):

Experimental Study ◽

Light Intensity ◽

South Australia ◽

Salt Lakes ◽

Near Ultraviolet ◽

Large Numbers ◽

Local Residents ◽

Do So

A series of salt lakes near Port Augusta, South Australia, supports large larval populations of Tanytarsus barbitarsis Freeman, a chironomid midge. When adults emerge they often fly to nearby artificial lights, and when large numbers do so a considerable nuisance to local residents is caused. In an investigation designed to provide control advice, those parts of the spectrum of particular attractivity to adults were identified in an experimental study of phototactic responses. Results indicated that the peak of attractivity lies in the near-ultraviolet part of the spectrum (370-400 nm). A second, weaker peak lies between 490 and 510 nm. Light intensity does not appear to be important. Certain sorts of commercially available lamps emit light with peaks in those parts of the spectrum attractive to T. barbitarsis and may be suitable for control purposes.

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Identification of crystallization kinetics parameters by genetic algorithm in non‐isothermal conditions

Engineering Computations ◽

10.1108/02644400710755889 ◽

2007 ◽

Vol 24 (5) ◽

pp. 486-513 ◽

Cited By ~ 7

Author(s):

J. Smirnova ◽

L. Silva ◽

B. Monasse ◽

J‐M. Haudin ◽

J‐L. Chenot

Keyword(s):

Genetic Algorithm ◽

Crystallization Kinetics ◽

Kinetics Parameters ◽

Isothermal Conditions

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Experimental Study on Light Intensity Profile in an Axisymmetric Thin Shell Irradiated by a Light

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.740.640 ◽

2013 ◽

Vol 740 ◽

pp. 640-643

Author(s):

Ching Yen Ho ◽

C. Ma

Keyword(s):

Experimental Study ◽

Solar Energy ◽

Light Intensity ◽

Intensity Distribution ◽

Thin Shell ◽

Laser Light ◽

Laser Drilling ◽

Geometric Optics ◽

Light Intensity Distribution ◽

Novel Method

This paper experimentally investigates light intensity distribution in a paraboloid of thin shell irradiated by a laser. Light intensity distribution needs to be understood for solar energy heat receiver or laser drilling cavity. A novel method is utilized to measure the light intensity distribution in a paraboloid of thin shell irradiated by a laser. The results are explained by simple geometric optics.

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