Aerogel

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Aerogel

An ultralight substance composed of silica, aluminium oxide, chromium oxide, zirconia, carbon and other substances, which is transparent, has significant insulating and sound-attenuating properties, and may have currency as a replacement for ozone layer-depleting CFCs.
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References in periodicals archive ?
The material density was reduced by % 68 and the lowest density is found as 0.129 for all the synthesized samples at the end of all experiments.
litura higher weight (900-1000 mg) at the lowest density where as 16.7% at the highest density (Table II).
However, in beggartick + brachiaria and beggartick + brachiaria + bean arrangements, there was an increase in Fe contents from the lowest density to the highest plant densities (Table 3).
The stem thickness increased with the decrease in planting density and plant grown at the lowest density (2 plants m-2) produced the thickest stems.
On examining the density of the groups in this study, it was found that the lowest density was in the first week.
The lowest density of shrimp produced the largest individuals and exhibited an average group weight gain of 1600%.
The town's website indicates that land zoned agricultural is "to provide for agricultural and lowest density residential sites while at the same time encouraging open space, preserving or enhancing views, protecting the character of the historic rural and agricultural environs, preserving or enhancing visual landscapes...''
According to the test results, the highest density of 2400 kg/[m.sup.3] was recorded in the batch of specimens containing 10% of amorphous alumina silicate admixture, and the lowest density of 2380 kg/[m.sup.3] was observed in the batch without amorphous alumina silicate admixture.
Balochistan has the lowest density of roads among all Pakistani provinces with 2,300 kilometers length of national highways.
The highest weight gain (WG) was registered for the treatment with the lowest density T1 (73,24 [+ or -] 19 mg), followed by the one with the highest density T3 (67,15 [+ or -] 24,3 mg), with no significant difference (p < 0.0001).
Just south of Raghunathpur village the lowest density zone (density [less than or equal to] 2500 kg/[m.sup.3]) within the above shear zone depicts some vertical layers with gradually decreasing of density from 2650 kg/[m.sup.3] at the surface to lower than 2400 kg/[m.sup.3] at the center of the lowest anomaly zone.
In fact, the report showed that the network of dual carriageways within Wales was the safest by a considerable margin and that the country has the lowest density of motorways of anywhere in Britain, with a very low number of fatal or serious crashes.
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