نتایج جستجو برای: thermal change

تعداد نتایج: 795751  

2013
María Fenollera José Luis Míguez Itziar Goicoechea Jaime Lorenzo Miguel Ángel Álvarez

The aim of this paper is to research new thermally-efficient concrete walls, analyzing the mechanical behavior of a self-compacting concrete to manufacture an uncoated solid structural panel, with the incorporation of a micro-encapsulated phase change material as additive. Different dosages are tested and mechanical properties of the product obtained from the molding of concrete specimens are e...

2012
S. Y. Wang C. W. Cheng W. C. Shen D. Y. Tzou

This study demonstrated circular surface nanostructures and femtosecond laser-induced periodic surface structures (FLIPSS) for copper produced by a Ti:Sapphire femtosecond laser beam of wavelength 800 nm and duration 120 fs. The circular textured nanostrucres could be created by a single laser pulse. The nanostructures in the center of the heated spot diminish as laser fluence increases and a c...

2013
Elah Bozorg-Grayeli John P. Reifenberg Mehdi Asheghi H.-S. Philip Wong Kenneth E. Goodson

Phase change memory uses brief pulses of electrical current to induce phase transitions in chalcogenide material regions with dimensions near or even far below 50 nm. The strongly differing electrical conductivities of the crystalline and amorphous phases allow data storage at densities in excess of terabits per square inch. Nanoscale conduction heat transfer governs the figures of merit in the...

1999
Dhanesh Chandra

The thermal response characteristic of a hybrid cooler that is charged with a “dry” solid-solid phase change compound is evaluated. A mathematical model that simulates the performance of a cooler/heat storage unit is formulated. A prototype heat sink that incorporates heat storage using a “dry” PCM is tested, and used to benchmark the simulation model. Different heating and cooling strategies a...

A. Hassanzadeh B. Shaabani E. Hobbolahi M. Alem S. Hedayati,

One of the best and the most active ways for surveying thermal behaviour of materials is using differential scanning calorimetry. In this paper, the authors have studied thermal behaviour for Schiff base ligand and their synthesized Cobalt, Nickel complexes. In this method, the sample is opposed to a controlled temperature change and its physical properties. Here we studied melting point and Tg...

Journal: :Bulletin of the Chemical Society of Japan 1976

Journal: :The Journal of the Society of Chemical Industry, Japan 1967

Journal: :Yonsei medical journal 1999
H Y Zhang Y S Kim Y E Cho

Subjective symptoms of a cool or warm sensation in the arm could be shown objectively by using of thermography with the detection of thermal change in the case of radiculopathy, including cervical disc herniation (CDH). However, the precise location of each thermal change at CDH has not been established in humans. This study used digital infrared thermographic imaging (DITI) for 50 controls and...

Journal: :Journal of the Ceramic Association, Japan 1952

A. Hassanzadeh B. Shaabani E. Hobbolahi M. Alem S. Hedayati,

One of the best and the most active ways for surveying thermal behaviour of materials is using differential scanning calorimetry. In this paper, the authors have studied thermal behaviour for Schiff base ligand and their synthesized Cobalt, Nickel complexes. In this method, the sample is opposed to a controlled temperature change and its physical properties. Here we studied melting point and Tg...

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