Composites of calcinated bovine bone derived hydroxyapatite (BHA) doped 1 and 2 wt% MgF2 were prepared by a sintering process. Microstructure crystallographic analyses along with measurements density, compression strength, microhardness carried out in the produced samples. The experimental results indicated beneficial effect matrix BHA reflected significant increase strength up to 143 MPa 313 H...

The influence of temperature on the indentation size effect is explored experimentally. Copper is indented on a custom-built high-temperature nanoindenter, at temperatures between ambient and 200 0C, in an inert atmosphere that precludes oxidation. Over this range of temperatures, the size effect is reduced considerably, suggesting that thermal activation plays a major role in determining the l...

Tujuan dari penelitian ini adalah untuk mengujii dan membandingkan pengaruh perbedaan suhu terhadap tingkat produktivitas induk ikan Guppy. Penelitian merupakan eksperimental, dengan menggunakan Rancangan Acak Lengkap (RAL). Ikan Guppy yang digunakan memiliki berat rata-rata 1,1 g. dipelihara selama 40 hari empat perlakuan tiga ulangan yaitu S0 (26 0C), S1 (28 S2 (30 0C) S3 (32 0C). Hasil menun...

Cu2ZnSnS4 (CZTS) thin films were prepared by directly sputteringCu (In,Ga)Se2 quaternary target consisting of (Cu: 25%, Zn: 12.5%, Sn; 12.5%and S: 50%). The composition and structure of CZTS layers have beeninvestigated after annealing at 200 0C, 350 0C and 500 0C under vacuum. Theresults show that recrystallization of the CZTS thin film occurs and increasingthe grain size with a preferred orie...

This study was aimed at investigating the quality characteristics of flour blends produced from sesame seeds, African yam bean (AYB) and Moringa leaf powder (MLP) for “biscuit- like” production. Dehulled seeds were roasted 7-13 min 185 – 200 0C, defatted milled into tagged as DSDSF , toasted 125 0C 40 min, dehulled, flour, TDAYBF while sundried, MLP. All these samples then blended 18 ratios LMD...

Cow milk, a highly nutritious food item, is amenable to quality degradation due to lipolysis and proteolysis, as a sequel to the growth of spoilage microorganisms, particularly under ambient condition in tropical countries, with consequential loss of aesthetic appeal and product output. Prescription antibiotics used for milk preservation have many undesirable side effects on the health of consu...