Silica gel

calcium carbonate and silica nano-coating. It is always a cost-effective idea to make use of silica nano-coatings. These coatings tend to be gel-based and they can easily be applied either through aerosol spray or by dipping an object into this gel. On the other hand, oxide polystyrene is more durable in comparison to silica-coatings but there are huge costs involved in applying this type of coating. Carbon nano-tubes also tend to be a little expensive. Thus, the gels which are silica based make…

Synthesis of Nano-silica-Cl Nano-SiO2-functionalized-Cl was synthesized via surface reaction of Nano-SiO2 by using 3-chloroproyltrimethoxysilane as the silylation agent. 2.0 g of Nano-SiO2 and 50 ml of toluene were mixed into a 250 mL round flask. 4.0 mL…

(1707 and 1727 cm-1 ) concomitant of the absorption at 1733 cm-1 may be owing to the formation of ester groups through the reaction between carboxylic acid groups of PAA oligomers and silanol groups of silica moieties 12. Besides, in SiO2/PAA hybrids, the O-H bands were broadened with the increase of silica content from 30 to 40 and 40 wt % and gradually shifted from 3100 cm-1 to 3150 cm-1, respectively (Figure 2). These observations may be the consequence of the strong hetero-associated…

selective, precise, accurate and sensitive HPTLC method for analysis of Cilnidipine and Chlorthalidone, as a bulk drug and in formulation, was developed and validated according to ICH guidelines. The method employed HPTLC aluminium plates precoated with silica gel 60F-254 as the stationary phase while the solvent consisted of Toluene: Methanol: Ethyl acetate (8:2:0.1 v/v/v). The system was found to give compact spot for drug (Rf value of Cilnidipine and Chlorthalidone was 0.75 and 0.47…

Use a micro spatula to obtain a sample of sand, and then line a ruler up against the pipet to add 5mm of the sand. Also, tap the pipet to ensure that the sand is compact and has an even top layer. 6. Use the ruler method in step 4, and add 5cm of silica gel to the pipet and tap to ensure there is an even layer. 7. Weight out and add approximately 0.02 g of the 50/50 mixture of ferrocene and acetylferrocene, and add it to the pipet while repeating the tapping method. 8. Repeat Step 4. 9. The…

clay, silica and biodegradable litters. The best litter for your cat will depend on the results you want. Clay litters are the oldest type and are still widely used. Clay is used because of its ability to absorb liquids. The clay litter can absorb its weight in cat urine, and also has some natural odor control because it separates the urine effectively. Its drawback is that as it becomes saturated, odor can become a problem. Silica litters are crystallized cat litters formed from a silica gel.…

say that the purification steps were effective at removing a large proportion of E.Coli proteins. However, not all E.Coli proteins have been removed as shown by the SDS-PAGE gel photo and further purification steps would be needed to have a pure Arginase protein. The increase in specific activity was also shown in the SDS-PAGE gel as the band in sample C was much thicker than in sample A and B showing that there was much more Arginase present in sample C.…

For the first synthesis reaction, camphene was converted to isobornyl acetate. In the fume hood, a sample of 1.36 g of camphene was added to a 25-mL round-bottomed flask along with a stir bar. To dissolve the camphene, 3.0 mL of glacial acetic acid was added into the flask. The flask was fastened onto a ring stand and immersed in a water bath that was on top of a stir plate. A thermometer wire was placed in the water bath to monitor the temperature throughout the experiment. After the camphene…

Metakaolin and Silica Fume on the properties of Concrete. Experimental investigation with seven concrete mixtures of 0, 5, 10, and 15% by mass replacement of cement with highreactivity Metakaolin or Silica fume, at a water cement ratio of 0.35 and a sand-toaggregate ratio of 40% was carried out. The effect of Metakaolin or Silica fume on the workability, strength, shrinkage, and resistance to chloride penetration of concrete was investigated. The incorporation of both Metakaolin and Silica fume…

Twenty Korean barley cultivars (Geongang, Gwangan, Nackyoung, Dahyang, Daejin, Saegang, Boanchal, Keunal, Saessal, Saechalssal, Sujung, and Boanchalssal) were selected in this research. All the cultivars were developed by the National Institute of Crop Science (NICS), Rural Development Administration (RDA), Korea and were grown during 2013 in the experimental fields of the NICS, Milyang, Gyeongnam. After harvesting, barley leaves were immediately washed with clean sterile water and then…