Various modifications of RNA isolation protocols have been developed that use cetyltrimethylammonium bromide
, cesium chloride, or lithium chloride (LiCl), depending on the target organism and tissue (MacKay & Gallant 1991, Apt et al.
(CTABr) from Fluka, dodecyl amine (DA) from Sigma, and sodium periodate from BDH (99% pure) were used without further purification.
Material Molecular formula Cobalt (II) chloride hexahydrate Co[Cl.sub.2]-6[H.sub.2]O Sodium borohydride NaB[H.sub.4] CTAB (cetyltrimethylammonium bromide
) [C1.sub.9][H.sub.42]BrN Material Purity Cobalt (II) chloride hexahydrate 97.0% Sodium borohydride 98.0% CTAB (cetyltrimethylammonium bromide
) 99.0% Material Manufacturing company Cobalt (II) chloride hexahydrate Samchun Pure Chemical Co., Ltd.
(CTAB) which has been used by Schulman for the first time (Hoar and Schulman, 1943) has a hydrophilic head and a lipophilic tail which makes it soluble in both polar and nonpolar solvents.
Acronyms CDA: Cellulose diacetate CMC: Critical micelle concentration CTAB: Cetyltrimethylammonium bromide
CTS: Chitosan PAH: Polycyclic aromatic hydrocarbons SEM: Scanning electron micrographics SDS: Sodium dodecyl sulfate SPE: Solid-phase extraction SSF: Solid-surface fluorescence TX-100: Polyoxyethylene (10) mono-4-isooctylphenyl ether.
Chemicals used were PAE CA 1920 (Ashland Water Technologies, Wilmington, Delaware), urea, dicyandiamide, sodium dodecyl sulfate (SDS), cetyltrimethylammonium bromide
(CTAB), and 1,2-propanediol (propylene glycol; Sigma-Aldrich, St.
The dispersion of CNT was carried out using cetyltrimethylammonium bromide
(CTAB) as a surfactant (Fluka, assay [greater than or equal to] 96%).
The GO was dispersed in cetyltrimethylammonium bromide
solution (20 wt%) and ultrasonicated for 0.5 h, followed by mechanical stirring at 25[degrees]C for 24 h.
We prepared buffer containing citric acid (40 mmol/L) and cetyltrimethylammonium bromide
(0.8 mmol/L), adjusted to pH 4.4 with [gamma]-aminobutyric acid (2), filtered and sonicated for 0.5 min before use.
Specifically, the present invention provides a rubber composition comprising a rubber composition and hydrated silica, wherein "CTAB" ([m.sup.2]/g) as specific surface area by cetyltrimethylammonium bromide
adsorption and "IB" as ink bottle-shaped micropore index, of the hydrated silica, satisfy a specific relationship and "weight loss on ignition" (mass %) as weight loss when the hydrate silicate is heated at 750[degrees]C for three hours and "weight loss on heating" (mass %) as weight loss when the hydrate silicate is heated at 105[degrees]C for two hours satisfy a specific relationship.