จำนวน Repository ( 1574 )
Efficiency of naringi crenulata (roxb.) nicolson and coix iacryma-jobi linn crude extracts for tyrosinase inhibition
The objectives of this research were to study chemical composition of crude extract from Naringi crenulata (Roxb.) Nicolson and Coix lacryma-jobi Linn to determine the appropriate ratio of crude extract between Naringi crenulata (Roxb.) Nicolson and Coix lacryma-jobi Linn to develop a facial washing gel derived from crude extract from Naringi crenulata (Roxb.) Nicolson and Coix lacryma-jobi Linn. The results showed that the crude extracts from Naringi crenulata (Roxb.) Nicolson and Coix lacryma-jobi Linn had the total phenolic at 45.21 and 38.24 g/ml respectively. Whereas the total tannin from Naringi crenulata (Roxb.) Nicolson and Coix lacryma-jobi Linn was 33.76 and 22.08 g/ml respectively. The steroids-terpene flavonoid and alkaloid were found in the crude extract of Naringi crenulata (Roxb.)Nicolson. The Steroids-terpene and flavonoid was found in crude extract of Coix lacryma-jobi Linn. IC50 of the tyrosinase inhibition was 0.28 mg/ml. The ratio of the crude extract could inhibition the enzyme tyrosinase was 1:1 with the IC500.18 mg/ml. The facial washing gel had red–brown colour with slightly smell from the extract with stable bubble. In addition the pH of the product was 6.7
The design of handicraft product from palm leaf for consumer satisfaction and demand at tambon takaok, amper bantak, tak province
The purposes of this research were 1) Study behavior and demand of consumers for handicraft product from palm leaf. 2) Design and development handicraft product from palm Leaf. 3) Study of consumer satisfaction for handicraft product from palm Leaf. The results found that. the community of housewife at Tambon Takaok choose artificial flowers and bag. Demand of the buyer in Tall vase flower arrangements Image of Buddha decorate with flower spherical vase flower arrangements and corsages handbag purse and cosmetic bag. Pass the tested to Thai Community Product Standard.The result of customer satisfaction showed that the average highest satisfaction product was spherical vase flower arrangements corsages and tall vase flower arrangements. The average high satisfaction product was Image of Buddha decorate with flowercosmetic bagpurse and handbag .
The environment of the faculty of industrial textiles and fashion design at Rajamangala University of Technology Phra Nakhon as Perceived by Undergraduate students
The purpose of this research were 1) to study the environment of The Faculty of Industrial Textiles and Fashion Design at Rajamangala University of Technology Phra Nakhon as perceived by undergraduate students. in overall and 5aspects : lecturers teaching and learning management premises students services and students activities. 2) to compare perceived of the environment of the Faculty of Industrial Textiles and Fashion Design at Rajamangala University of Technology Phra Nakhon. In overall and 5 aspects classified by gender years of study student achievement and major of studies 416 under graduate students were used as samples. The instruments used in the study was a five-point 58 items rating scale questionnaire with the reliability of 0.97. The data were analyzed by mean percentage standard deviation and t-test. The results revealed that : 1) the environment of the Faculty of Industrial Textiles and Fashion Design at Rajamangala University of Technology Phra Nakhon as perceived by undergraduate students in overall and 5 aspects were at moderate level. 2) the environment of The Faculty of Industrial Textiles and Fashion Design at Rajamangala University of Technology Phra Nakhon as perceived by undergraduate students classified by gender years of study student achievement and faculties were significant different.
Detection of the corresponding time between the photovoltaic current difference and the surface temperature dropdown by using solar cell
During the daytime solar cells can be used in terms of meteorology because the variations of the current obtained from solar cells are associated with changes in daily climate. The case study of the comparison between the surface temperature and the different current (Ipv_d) obtained from the solar cells in the periods of November 2011 to February 2012 which known as the winter period of Thailand had been conducted. The result showed that it was possible to observe the decreased surface temperature at the time that the increased Ipv_d was more than 6000 mA. Vice versa the decreased surface temperature would not be observed when the Ipv_d was below 6000 mA. The decreased surface temperature may reflect the influence of the traveling high pressure area moving to cover and collide with the steady-low pressure area at the study area. The result of the collision caused extensive cloud cover resulting in increasing Ipv_d.
Efficiency of feronia limonia swingle branch crude extract asantioxidant
The objective of this research were to focus the antioxidant activity and separated the chemical compound of crude extract from Feronia limonia Swingle branch. After that the optimum antioxidant of crude extract was used to prepare the antioxidant lotion. The result showed that crude extract had total phenolic and total tannin contents 41.99 and 52.35 g/ml ; respectively and also had antioxidant activity (IC50) 12.55 ?g/ml Whereas BHT and BHA had IC50 8.96 and 9.61 ?g/ml. The separation of crude extract can be separated into four groups (F1 F2 F3 F4) and the results showed that F2 has the strongest activity against the others with IC50 = 9.53 ?g/ml. Then F2 was analyzed with GC-MS and found that the structure were Hexadecanoic acid Ethyl ester Trimethylsilyl ester and Dioctyl ester. The lotion was odorless white color with no phase separation with pH 8.0