Polyhydroxyalkanoates (PHAs) are a group of biopolymers used as an alternative to petroleum-based synthetic plastics. Their industrial application is not widely available due production cost constraints, mainly from raw materials for carbon sources. This research focuses on selecting Bacillus strain lipid-containing wastewater that can produce PHAs crude glycerol and investigating the optimum c...

This research aims to find out the characteristics of Ficus carica L. drying process using a tray dryer and determine effect temperature time on Carica flavonoid content obtain herbal leaf tea which is high in antioxidants. At experimental stage, water fresh leaves were determined, so 74 ± 1.11% (wet base), then dried at 35; 40; 45; 50; 55oC, with variation air flow rate 1.3; 1.6; 1.9; 2.2; 2.4...

Producing the biodegradable plastic is the most important processes nowadays because to overcome the recent issues concerning the global environment and solid waste management. The optimum conditions for PHB production are more important to enhance the production by microorganism. In the present investigation newly isolated Azotobacter vinelandii KDP culture conditions were optimized to produce...

The participative standard with feedback condition was superior to the assigned difficult (140% of normal) standard with feedback condition in terms of worker productivity. The percentage increase in worker productivity with the participative standard and feedback condition was 46%, whereas the increase in the assigned difficult standard with feedback was 23%, compared to the control group (no ...

The performance of solar photovoltaic (PV) array is affected in conditions like Array tilt (optimum = latitude), Array tracking (1-axis, 2axis), Array azimuth/orientation (optimum = 180o or South), Array temperature, Array “soiling” (dust/dirt, snow, foreign matter etc.), Array shading (trees, clouds, buildings, chimneys, dormers, utility and telephone poles etc.), Array configuration, Array ag...

Sunflower stalks were analysed for chemical compositions: pentosan 15.84%, holocellulose 70.69%, alphacellulose 45.74%, glucose 27.10% and xylose 7.69% based on dry weight of 100-g raw material. The most optimum condition for steam explosion pretreatment was as follows. Sunflower stalks were cut into small pieces and soaked in 0.02 M H2SO4 for overnight. After that, they were steam exploded at ...