نتایج جستجو برای: thermal properties

تعداد نتایج: 1049095  

2003
NORIYOSHI ISHII HIDEO SUGANUMA

We study the properties of the 0 glueball at finite temperature using SU(3) quenched lattice QCD. We find a significant thermal effects near Tc. We perform the χ fit analyses adopting two Ansätze for the spectral function, i.e., the conventional narrow-peak Ansatz and an advanced Breit-Wigner Ansatz. The latter is an extension of the former, taking account of the appearance of the thermal width...

Journal: :journal of agricultural science and technology 2010
m. dalvi n. hamdami

information on the thermophysical properties of the iranian ultrafiltrated (uf) white cheese is very limited. in this research, those thermal properties determined experimentally were thermal conductivity, specific heat, density and water activity. the thermal conductivity and specific heat of iranian ultrafiltrated white cheese (iufwc) ranged from 0.447 to 0.480 w m-1 °c-1 and from 3.871 to 4....

Journal: :international journal of nanoscience and nanotechnology 2012
z. hejri a. ahmadpour a. a. seifkordi s. m. zebarjad

a novel starch/poly (vinyl alcohol)/nano-titanium dioxide (st/pva/nano-tio2) biodegradable nanocomposite film was prepared by homogeneously dispersed tio2 nanoparticles in different ratios of starch/pva-based materials, via a solution casting method. glycerol was used as plasticizer. the mechanical and thermal properties of films were studied using tensile and perforation strength tests and the...

Journal: :desert 2005
s. k. alavipanah a. a. shamsipour m. jafer beglo

analyses and thermal infrared channels 4 and 5 noaa- avhrr images. this research was carried out in lut desert located in center of sub-tropical divergence dominant in' iranian plateau. the physical and thermal properties of the various desert surfaces have been determined using correlation relationships between the desert variables including: dark sand, normal sand, marl, saline soil, soil dep...

Ali Kakvan

In this research, fire and radiant heat protection and thermal comfort properties of cotton/nylon-Kermel blended woven fabrics, were utilized to predict the thermal comfort and protection limit of this fabric structure based on Woo and Barker developed model. The results showed that the porosity, the air permeability and the thermal resistance increased with Kermel fiber blend ratio. Conversely...

Journal: :international journal of advanced design and manufacturing technology 0
nasim nayebpashaee iran university of science & technology h. n. vafaeenezhad s. m. m. hadavi s. m. m. hadavi s. h. seyedein m. r. aboutalebi

an attempt was made to investigate the thermal and residual stress distribution in a novel three layer (la 2 zr 2 o 7 / 8ysz/ nicraly) during a real-like heating regime which includes heating, service time and final cooling. for achieving maximum accuracy and consistency in calculation of thermal and mechanical properties of hybrid coating system, all related andrequired properties were introdu...

Journal: :international journal of nanoscience and nanotechnology(ijnn 0
a. ghozatloo faculty member of research institute of petroleum industry (ripi), west blvd. azadi sport complex, p.o. box: 14665-137, tehran, iran m. shariaty niassar transport phenomena & nanotech. lab (tpnt), school of engineering, university of tehran, p.o. box: 11155-4563, tehran, iran a. rashidi faculty member of research institute of petroleum industry (ripi), west blvd. azadi sport complex, p.o. box: 14665-137, tehran, iran

in this research, graphene was synthesized by chemical vapor deposition (cvd) method in atmosphere pressure (14.7 psi). different functionalization method was used for oxidizing of graphene such as acid and alkaline treatments. the functionalized graphene (fg) was characterized by ftir and raman spectroscopy. nanofluid with water and different concentration (0.05, 0.15 and 0.25 wt %) of fg were...

Journal: :physical chemistry research 2013
mahboobeh hadadian sara samiee hossein ahmadzadeh elaheh k. goharshadi

a nanofluid is a dilute liquid suspension of particles with at least one critical dimension smaller than ~100 nm. research works so far suggest that nanofluids offer excellent heat transfer enhancement over conventional base fluids. the enhancement depends on several factors such as particle shape, particle size distribution, volume fraction of nanoparticles, temperature, ph, and thermal conduc...

A series of polystyrene hybrid nanocomposites have been fabricated with varying amounts of TiO2 viz., 0, 0.5 and 1 % w/w along with 3% TS by in-situ polymerization method. The influence of surface modified TiO2 nanoparticles on the thermal properties of PS matrix was examined using thermogravimetry and differential scanning calorimetry. Thermal characteristics of the polystyrene/TS/TiO2 hybrid ...

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