จำนวน Repository ( 1574 )

The application of multi-path adaptive TABU search algorithm in fuzzy logic controller design applied for four-leg active power filter
The application of multi-path adaptive TABU search algorithm in fuzzy logic controller design applied for four-leg active power filter

This paper presents the application of MATS Algorithm that used to find optimum membership function shapes for a fuzzy logic controller and used to find optimum limit range of a compensate reference current amplitude. This amplitude used to create three-phase compensate reference current signals that compare with three-phase compensate real current signals at hysteresis band current controller (HBCC) to generate gate drive signals of a FL-APF. The FL-APF delivers reactive power to point of common coupling and reduce harmonics components of all supply currents. The MATS evolution mechanisms were found optimum membership functions for fuzzy logic controller. The simulation results after setting optimum parameters were found that the fuzzy logic controller control active power filter to compensate reactive power at the point of common coupling and limit source currents THD to 5% in range and complied with IEEE 519 standard

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Influence of the mordant on dyeing properties of cotton yarn with natural dye extracted from teak leaves
Influence of the mordant on dyeing properties of cotton yarn with natural dye extracted from teak leaves

The objective of this research was to study influence of five different kinds of the mordant copper sulfate (CuSO4) ferrous sulphate (FeSO4) alum and chitosan on dyeing properties of cotton yarn with natural dye extracted from teak leaves. Cotton yarn dyeing with the extracted dye from teak leaves was carried out at 60?C for 30 minutes with a material to liquor ratio of 1:5. Three mordanting methods such as pre mordanting simultaneous mordanting and post mordanting were used. After that dyed clothes were subjected to measurement using CIELAB system and fastness tests. The effect of kinds of mordents on the hue of dyeing of cotton yarn shown that CuSO4 FeSO4 gave greenish yellow and yellowish brown respectively. While as alum and chitosan gave violet red. Moreover using CuSO4 (pre mordanting or simultaneous mordanting) and FeSO4 (simultaneous mordanting) improved fastness properties to light better than without a mordant.

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Nutrient composition and ruminal degradability of arachis glabata using nylon bag technique in dairy cattle
Nutrient composition and ruminal degradability of arachis glabata using nylon bag technique in dairy cattle

Arachis glabata is new variety forage which tolerates drought and provide high protein.This kind of plant is suitable as dairy cow diet. The research was divided into 2 experiments Experiment 1 was conducted to study on nutritive value of Arachis glabata.The experimental design was Randomized Completely Block Design (RCBD) experiment with three treatments. Each treatment consisted of three blocks (three crops) and followed different three variety of Arachis glabata as Cv. Florigraze Cv. Arbook and Cv. Ecotart. Results showed that three variety of Arachis glabata were 28.26-30.75 % of dry matter (P>0.05). In addition Arachis glabata Cv. Arbook was grater 19.78 % of protein than other group of Arachis glabata (P<0.01). Furthermore Arachis glabata Cv. Florigraze was grater 17.63 of hemicelluloses and 3830.00 kcal/kg of gross energy significant different among other group of Arachis glabata (P<0.05). Experiment 2 was conducted to study on ruminal degradability of Arachis glabata using In situ technique in dairy cattle. The experimental design was Randomized Completely Block Design (RCBD) experiment with three treatments. Each treatment consisted of three blocks (three ruminally fistulated dairy cattle) and followed different three variety of Arachis glabata as Cv. Florigraze Cv. Arbook and Cv. Ecotart. Results showed that Arachis glabata Cv. Florigraze and Arachis glabata Cv. Arbook was grater dry matter organic matter and protein degradability at 0-4 hour and 24-28 hour than Arachis glabata Cv Ecotart (P<0.05). In addition kinetic of degradation (a b c and p) of dry matter organic matter and protein were not significant different (P>0.05) among three variety of Arachis glabata.

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Factors influencing to the inappropriate behaviors for scuba diving in coral reef
Factors influencing to the inappropriate behaviors for scuba diving in coral reef

The study of factors influencing to the inappropriate behaviors of SCUBA divers in coral reef areas was done. The study performed by Quota sampling technique which the data was collected from 279 divers. The frequency of inappropriate behaviors of divers was recorded for in 10 minutes each. The results show that the average contacts damage and interference to aquatic organisms made by individual divers were 2.20 0.22 0.02 ? 0.01 and 1.70 0.20 respectively. No significant difference of factors of contact and damage made by divers but there was significant difference between nationality (t = 5.24; df = 277; p < 0.001) and pointer possession (t = 2.59; df = 277; p < 0.01) with the number of times divers made interference the aquatic organisms. This study results can be used to propose the guidelines and management strategies for conservative and sustainable of SCUBA diving in the coral reef.

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The develop of social service model instruction to enhance consciousness on sufficiency economy for bachelor students
The develop of social service model instruction to enhance consciousness on sufficiency economy for bachelor students

The purposes of this research were as follows: 1) to construct and find an efficiency of the development of social service model instruction to enhance public consciousness on sufficiency economy for bachelor students as the 80/80 standardized criterion efficiency 2) to find the effectiveness index of the development of social service model instruction to enhance public consciousness on sufficiency economy for bachelor students 3) to compare pretest scores and post-test scores all lessons 4) to study the satisfaction of students after they join the class 5) to study the attitude of students after they join the class and 6) to find the retention of students after join the class in two weeks. The sixty students were area on simple random sampling selected from students in Rajamangala Technology University. The results the study was as follows: 1) An efficiency of the development of social service model instruction to enhance public consciousness on sufficiency economy for bachelor students was 82.54/82.11 which higher than the 80/80 standardized criterion efficiency. 2) The efficiency index of the development of social service model instruction to enhance public consciousness on sufficiency economy for bachelor students was 0.7246. 3) The results of the comparisons of pre-test scores and post-test scores all lesson significantly different at 0.05. 4) The results of the satisfaction of the development of social service model instruction to enhance public consciousness on sufficiency economy for bachelor students was found to be a high level. 5) The retention of the teachers after join the class in two was no significantly different.

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