1 Soda silica glasses are not very manageable, however.

2 Quartz is a crystalline form of silica.

3 It's made from a single crystal of silica.

4 The silica gel removes the water.

5 Indeed as pure silica it is the insulating element in the technology of silicon microchips.

6 Because the silica in andesite makes it thick and pasty,(www.Sentencedict.com) andesite tends to trap large amounts of gas.

7 Relict silica crystals which have not completely dissolved in the glass-melt is an example of this.

8 The clays consist of silica tetrahedra and the octahedra contain magnesia surrounded by oxygen atoms and hydroxyl groups.

9 All three are mainly composed of silica, but analysis reveals significant differences in other components.

10 Granite, rich in silica, is the most abundant acidic rock.

11 The crude oil is chromatographed over silica gel.

12 Bronzed board carving, silicon rubber tire(sentencedict.com), silica gelboard.

13 Hydrophobic silica is the active antifoam agent.

14 Beneficiation removes clay and silica to considerable extent.

15 New steel doors Xiangyun County silica sand processing plant.

16 The structure and mechanical properties of silica sponge spicule found in China Bo-hai were studied.

17 By acidifying the kaoline, aluminum salts and silica white can be obtained simultaneously. This is of practical significance for the comprehensive exploitation of clay mine in Fujian province.

18 The effect of surface treatment of non silica base sand on the strength, gas evolution and breakdown of precoated sands has been investigated in the present work.

19 Bisazza glass mosaics contain suspended particles of silica sand which reflect and almost seem to capture light, giving the material an appearance of depth.

20 Polyamide and silica gel column chromatography was used to isolate and extract the analgesic and antemetic constituents.

21 High-temperature gas cleaning techniques remove the water and metal ions which are a natural constituent of silica glass, and attenuate light.

22 Below: A graphical representation of: The crystalline structure of silica.

23 Some tropical woods such as teak and green-heart contain small amounts of toxic chemicals and also of silica.

24 This is not a result of sampling bias on our part, as all known sites of geothermal silica deposits were sampled.

25 Many of those that live in the sea secrete shells with the most elaborate structure of silica or lime.

26 The most commonly used rocks are those composed of silica, quartz, granite, slate, and other similarly stable materials.

27 This model remains today the best For simple glasses, such as silica, and many of the new amorphous semiconductors.

28 For example, ethanol can be separated from a liquid mixture of ethanol and water by shaking the mixture with silica gel.

29 The mechanical strength of the mortar was enhanced by employing silica fume, sepiolite fiber and silt ceramisite, so that it could be used in roof insulation engineering.

30 The influence of PY (hexamethylene tetraminea and resorcinol) on reinforcement between NR and silica was investigated through swelling method, determination of physical properties and aging test.