As the worlds energy resources are currently insufficient to meet human needs energy-saving and energy-efficient appliances have to be invented that are readily available and accessible to everyone. To have enough energy to meet human needs and to reduce the waste from the waste of energy resources each year to meet the demand for energy that can be produced by itself. This research presents the construction of a portable DC to AC voltage converter or “Constrution of Portable DC to AC Voltage Converter” which can be operated through a solar cell. By charging energy from the sun and storing energy at the battery. and can also bring electrical energy to use inside the pressure converter There is an inverter circuit that converts voltage from DC to AC so that AC power can be used in daily life. which has a lighting system power socket USB port and helps reduce electricity bills in the house and is convenient to carry From the experimental results of creating a portable DC to AC voltage converter it can be used in daily life and saves electricity and is also clean energy from sunlight that does not cause pollution like a generator that uses oil. be a generator

The aim of this research was determine total phenolic content total flavonoid content and antioxidant activity by DPPH and ABTS assay from leaves flower and stem of Crateva adansonii DC. subsp. trifoliate (Roxb) Jacobs that was extracted by Soxhlet method using ethanol dichloromethane and ethyl acetate as solvent. Leaves extract showed the highest total phenolic content and antioxidant activity. Ethanolic leaf extract showed the highest total phenolic content (157.13±0.32 mg GAE/g extract) and antioxidant activity by DPPH assay (53.64±3.78% (IC50 = 1.49±0.02 mg/ml)) and ABTS assay (76.51±0.97% (IC50 = 0.84±0.01 mg/ml)).When we considering solvent effect found that ethanolic extract showed the highest total phenolic content and antioxidant activity. Total flavonoid content ethyl acetate extract showed the highest total flavonoid content. Total phenolic content significantly correlated with antioxidant activity.

Metaheuristic optimization approach has become the new framework for control synthesis. The main purposed of the control design are input (command) tracking and load (disturbance) regulating. This research proposes an optimal proportional-derivative (PID) controller design for the brushless dc (BLDC) motor speed control system with input tracking and load regulating constrained optimization by using the cuckoo search (CuS) one of the most efficient population-based metaheuristic optimization techniques. The sum-squared error between population-based metaheuristic optimization techniques. The sum-squared error between the referent input and the controlled output is set as the objective function to be minimized. The rise time the maximum overshoot settling time and steady-state error are set as inequality constraints for tracking purpose while the regulating time and the maximum overshoot of load regulation are set as inequality constraints for regulating purpose. Results obtained by the CuS will be compared with those obtained by the particle swarm optimization (PSO) and genetic algorithm (GA). From simulation results it was found that the parameters of CuS were optimal than both PSO and GA for BLDC motor speed control system satisfying the preset input tracking and load regulating constraints. In addition the simulation results are confirmed by the experimental ones from the BLDC motor speed control system developed in the laboratory.

The research was aimed to: 1) create a standard formula of Sangyod brown-rice flour Thai Lodchong 2) study the change during storage and 3) study the consumers’ acceptance. The physical properties chemical composition sensory evaluation and microbiological quality were determined. The study showed that Lodchong in which the substitution of Sangyod brown rice flour at 50% by weight of rice flour and 30% of arowroot flour for the total flour weight were used was most accepted in all aspects. The product has a slight physical conversion at 7 °C for not longer than 48 hours. All the microorganisms yeast and mold found were still safe for consumers and none of Escherichia coli was detected in the product. Nutritional analysis results revealed that 100 grams of the product contained 78.64 kcal energy 0.98 g protein0.07 g fat 18.03 g carbohydrate dietary fiber 0.71 g and 11.63 mg anthocyanin. For consumers’ acceptance it was found that the product was much accepted and 99% of the consumers were interested to buy the product at 22 bath per 180 ml cup.

This study was experimental study that had the propose to investigate the possibility of using sludge from wastewater treatment of milk production in case study of Friesland Campina Fresh (Thailand) Co Ltd. This study to investigate suitable ratio in making briquette between sludge and banana peel in ratio 95 : 5 75 : 25 50 : 50 25 : 75 and 5 : 95 by weights and analysis of compressed char were Moisture content Ash content Volatile matters Fixed carbon and Calorific value. The result of this study we found that sludge mixed with banana peel at the ratio of 25 : 75 had Moisture content 9.7 percent Ash content 15.8 percent Volatile matters 61.8 percent Fixed carbon 9.7 percent and Colorific mean 4195 kcal per kg. It can also be used briquette fuel substitutes of firewood in order to conserve the forest resources.