Variations in camptothecin (CPT) content in relation to leaf characteristics namely leaf area, leaf biomass, and specific leaf area (leaf area divided by leaf biomass), and the influence of climatic factors on CPT content in saplings of Camptotheca acuminata Decne. were studied. Leaf area and CPT content showed a logarithmic relationship in young leaves similar to that between leaf biomass and ...

This research focuses on flexural strength characteristics of pawpaw leaf ash and bamboo blended cement concrete. Several tests were carried out, according to BS ASTM requirements determine the physical mechanical properties concrete, investigate effects curing age concrete examine percentage replacement with characteristics. A total 60 cubes cast, cured in water for 7, 14, 21 28days. Test resu...

Natural fibres are attractive as the raw material for developing sound absorber, they green, eco-friendly, and health friendly. In this paper, pineapple leaf fibre/epoxy composite is considered in absorber development where several values of mechanical pressures were introduced during fabrication composite. The results show that can absorb incoming wave, absorption coefficients α _n > 0.5 prono...