จำนวน Repository ( 771 )

Effect of glass cullet on compressive strength and abrasion resistance of terrazzo floor tile
Effect of glass cullet on compressive strength and abrasion resistance of terrazzo floor tile

This research was aimed to study the compressive strength and the abrasion resistance of Terrazzo floor which used glass cullet as aggregate. The mix proportion of Terrazzo was 1 : 2.5 (white cement : chipped stone) by weight. The weight percentages of replacement of chipped stone by glass cullet were 0 10 25 50 75 and 100% by weight of aggregate. The compressive strength and abrasion resistance of Terrazzo specimens were measured at 7 14 and 28 days. The results indicated that the compressive strength of mixtures with glass cullet of 0 10 25 50 75 and 100% were 581.11 540.81 534.83 480.94 435.42 and 343.71 kg/cm2 respectively. It showed that the compressive strength decreased with the increase of glass cullet content. The abrasion test of Terrazzo specimens showed that at low glass cullet content (10-50%) the abrasion resistance increased with the increase of glass cullet content. The mixtures with glass cullet of 75 and 100% have abrasion resistance nearly the same as the mixture without glass cullet

2558
Effects of environmental management in evaporative cooling system (EVAP) house on productive performance of layer pullets
Effects of environmental management in evaporative cooling system (EVAP) house on productive performance of layer pullets

The research was conducted to study on effects of environmental management in evaporative cooling system (EVAP) house on productive performance of layer pullets. This study divided into 2 experiments. Experiment 1 was conducted to study on temperature and air velocity in evaporative cooling system (EVAP) house on productive performance of layer pullets. Four thousand and eight hundred layer pullets were raised on battery cage with 5 birds per cage and assigned in a Randomized Completely Block Design (RCBD) experiment with three treatments. Each treatment consisted of four blocks (four houses) and followed different temperature and air velocity in raising area of evaporative cooling system (EVAP) house as front area central area and back area. Results showed that temperature and air velocity in front area was grater body weight gain (BWG) average daily gain (ADG) and feed conversion ratio (FCR) of layer pullets than layer pullets were raised in back area of evaporative cooling system (EVAP) house (P<0.01) Experiment 2 was conducted to study on light color and number of H-Flame battery cage row in evaporative cooling system (EVAP) house on light intensity and productive performance of layer pullets. Nine thousand and six hundred layer pullets were raised on H-Flame battery cage with 5 birds per cage and assigned in a 2x4 factorial in Randomized Completely Block Design (RCBD) experiment with two factors. Factor A was light color comprised of range and blue). While Factor B was number of battery cage row comprised (first row second row third row and fourth row). Each treatment consisted of four blocks (four houses). Results showed that interaction between factor A and B on light intensity and uniformity of layer pullets with highly significantly different (P<0.01). However interaction between factor A and B and main effect (factor A and B) were investigated on body weight gain (BWG) average daily gain (ADG) and feed conversion ratio (FCR) (P>0.05). The data from this research was suggests the important for implicate to improve the egg production industry in further success.

2558
Antibacterial activities of the crude extract of acrostichumaureum l. growing at Rajamangala University of Technology Srivijaya, Trang Campus
Antibacterial activities of the crude extract of acrostichumaureum l. growing at Rajamangala University of Technology Srivijaya, Trang Campus

The aim of this research was to study the antibacterial activities of crude extract with hexane from the leaves stems corms and roots of Acrostichumaureum L. by disc diffusion method against the pathogens viz. Bacillus cereus TISTR687 Staphylococcus aureus TISTR1466 Escherichia coli TISTR780 and Salmonella typhimurium TISTR292. The results revealed that the leaves extracts showed antibacterial activity onall of fourtested pathogenic bacteria with the inhibition zone of 9.20 0.37 8.92 0.09 6.62 0.48 and7.82 0.56 mm.respectively. While the stems corms and roots extracts showed antibacterial activity ononly B. cereus with the inhibition zone of 8.02 0.25 8.51 0.21 and 10.87 0.13 mm. respectively. This preliminary screening results demonstrated the potential of the extracts from various parts of Acrostichumaureum L. to be used as antibacterial agent and to be further researched and developed into innovative pharmaceutical and cosmetic products.

2558
Quality of life’s development of motorcycle taxi in bangkok
Quality of life’s development of motorcycle taxi in bangkok

The purposes of the study were to examine the quality of life of the motorcycle taxi drivers in Bangkok Metropolitan region and to investigate the development of the quality of life of the motorcycle taxi drivers in Bangkok Metropolitan region. The sample of the study drawn by the method of stratified simple random sampling consisted of 507 motorcycle taxi drivers in Bangkok Metropolitan region. The questionnaire was used as the data gathering tool. The statistics applied for data analysis consisted of Frequency Percentage Mean Standard Deviation Crosstabs T-test F-test at 0.05 level of significance. The results of the study demonstrated that the majority of the motorcycle taxi drivers were male between 36-50 years old completed secondary education were married lived in rentedhouses earned average daily income of 200-400 Baht earned average monthly income of 5000-10000 Baht spent average monthly expenses of 5001-10000 Baht earned their living as the motorcycle taxi drivers for 3-5 years had white vehicle registration plates and drove motorcycle taxis in Bangkok area. The study of opinion concerning the quality of life revealed that the motorcycle taxi drivers in Bangkok Metropolitan region expressed their opinion on overall aspects of quality of life at a high level Mean =3.72. When each aspect of the quality of life was examined it was found that safety aspect was at a highest level next below were the aspects of work life spirit and soul participation family life health and communication. According to the aspects of income and environment the study showed a moderate level of opinion respectively however the aspects of housing and education were found at a high level. With regard to the opinion on the development of quality of life the motorcycle taxi drivers had a moderate level of opinion Mean=3.21.

2558
Effect of different colchicine concentrations on the morphology  of physic nut (jatropha curcas l.)
Effect of different colchicine concentrations on the morphology of physic nut (jatropha curcas l.)

Physic Nut (Jatropha curcas L.) was a narrow genetic based plant resulting in low productivity. Colchicine application was a mutation technique that could induce genetic variability for plant improvement. In this study the 24 hour soaked physic nut seeds and the 3 – day physic nut seedlings were treated with 0 0.05 0.15 and 0.20% of colchicine for 48 hours and there were soaked for 24 hours to induce polyploidy. The results showed that the survival rates were 67.15 and 93.93 % at the 0.05% of colchicine. DNA content in the survived seedlings was detected by flow cytometry. The number of tetraploid and mixoploid were increased in the 3-day seedlings treated with 0.05% of colchicine. The morphology characteristics at the first flowering stage were follows; the diploid had average height branch numbers spikelets per head ratio of male and female flowes leaf size (W x L) and stomata size (W x H) were 249.50 cm. 15.7 214.7 24.8 :1 14.8 x 13.2 cms and 7.88 x 50.25 micrometers respectively while the mutant had the average of 180.6 - 21.54 cm. 9.8 - 13.0 37.9 - 17.53 19.3 : 1 42.8 : 1 17.0 - 14.4 cms and 61.0 - 70.5 x 103.33 - 116.1 micrometers respectively. so The mutant had better characteristics but their fruits could not mature.

2558