The production of extracellular -amylase by producing Bacillus subtilis RSKK96 was studied under solid state fermentation (SSF). Various agroresidues as substrate were studied for enzyme production. The highest enzyme yield was expressed with cotton stalk substrate (1016.3 ± 32.6 U g · 10). Production parameters were optimized as incubation time 72 hours, incubation temperature 37 °C, agitation...

Abstract Oxygen reduction reaction (ORR) is a key step in the operation of fuel cells and metal air cells, which needs some economic efficient catalysts to improve its kinetics process. In this work, nitrogen-doped carbon (N-C) catalyst material was prepared by one-step high-temperature pyrolysis with biomass waste cotton stalk as carbon/nitrogen precursor urea auxiliary nitrogen source. The ef...

The V-shaped toothed roller cotton stalk puller has a low removal ratio and weak pulling effect. Hence, we constructed simplified mathematical model of the tooth based on elastic collision theory simple beam conducted mechanical analysis this to explore causes errors fractures. Specifically, plates machine were optimized in an orthogonal experiment with rotational speed, cogging angle, ground c...

The objectives of this experiment were (i) to determine the effect of water supply on the photosynthetic capacity of leaves, bracts, capsule walls, and stalks of cotton at different growth stages and (ii) to determine the contributions of these nonleaf organs to whole plant photosynthesis. Water deficit reduced the total surface area per plant but increased the proportion of nonleaf to total pl...

The agro waste briquettes produced from sorghum panicle and pearl millet with corn starch as the binder varied proportions were compared other briquettes, elemental analysis of SP-PM was waste, palm kernel shell, soybean mango leaves, rice husk, spruce, coffee husk briquettes. TGA results leaf, baggase, almond banana pseudostem, pineapple stem root, low rank coal, bituminous cotton stalk, wheat...

BACKGROUND Third generation biodiesel processing from microbial lipids using low-cost lignocellulosic feedstocks has attracted much attention. Endophytes isolated from oleaginous plants possibly have the capacity to accumulate lipids similar to the hosts. However, little work has been reported in terms of endophytic bacteria isolation from oleaginous plants and their lipid production using lign...