Rahimah Jusoh

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The title compound, C(17)H(18)N(2)OS, adopts a trans-cis geometry of the thio-urea group which is stabilized by intra-molecular hydrogen bonds between the O atom of the carbonyl group and the H atom of the thio-amide group. A C-H⋯S intramolecular hydrogen bond is also present. In the crystal structure, mol-ecules are linked by inter-molecular N-H⋯S hydrogen(More)
Teaching on differentiation topic is paramount important for science and engineering students at first year tertiary level. However lectures are facing difficulty when students are unable to apply the concepts and basic problem solving skills on differentiation when applied to science and engineering related problems at higher level. The aim of this study(More)
In this work, mesostructured silica nanoparticles (MSN(AP)) with high adsorptivity were prepared by a modification with 3-aminopropyl triethoxysilane (APTES) as a pore expander. The performance of the MSN(AP) was tested by the adsorption of MB in a batch system under varying pH (2-11), adsorbent dosage (0.1-0.5 g L(-1)), and initial MB concentration (5-60(More)
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