Hasil Pencarian  ::  Simpan CSV :: Kembali

Abstrak :
ABSTRACT
Vibrio cholera, Vibrio parahaemolyticus and Vibrio vulnificus are opportunistic pathogens causing disease in weak shrimp and possible food poisoning in shrimp consumers. In this study, three pairs of primers were designed to amplify the target DNA fragments of three Vibrio spp. and together with one pair for internal amplification control. The PCR condition was optimized to detect three Vibrio spp. in one reaction tube. The specificity and sensitivity of the reaction were evaluated. The results showed that this technique can detect V. cholera, V. parahaemolyticus and V. vulnificus in the same reaction tube with high specificity. Sensitivity is moderate, 0.5 ng-10 pg. In the future, this technique can be used to detect these bacteria in shrimp. It is potentially useful for shrimp farmers and shrimp consumers.

Abstrak :
ABSTRAK
The number of elderly people is more increasing along with the rising of the life expectancy age. There are many efforts that should be carried out to prevent the elderly, one of which from the preventive aspect is by maintaining the physical fitness of the elderly. To monitor the fitness status of the elderly, it needs an application of the web technology-based physical fitness monitoring because has been no system that records elderly fitness data. This application was to record physical fitness data of the elderly to recommend the appropriate gym based on the health condition which can be accessed anywhere. This application was made with the PHP and MYQSL program language as the database processing equipped by the graphic to monitor the physical fitness. The results of the test showed that the application worked properly. As indicated by the functioning of the designed and developed menues. The system was able to record the individual data and the physical fitness of the elderly, also able to serve the information and the records of the fitness of the elderly people and the appropriate recommendation on fitness exercise.

Abstrak :
ABSTRACT
There are many conventional technologies used for recovery of precious metals from wastewater, but most of them are chemical intensive and consume high energy. This paper focuses on silver recovery using bio-electrochemical system (BES), which basically consists of two separated chambers, the anode and cathode chamber. The anolyte, containing either acetate or glucose as substrate, was fed into the anode chamber, in which microorganisms were employed to produce electrons through anaerobic oxidation. The catholyte was a synthetic mixed metals solution containing silver Ag(I), copper Cu(II), and iron Fe(III), which acted as terminal electron acceptors. Two BES reactors, in which anion exchange membrane (AEM) and a cation exchange membrane (CEM) served as separators, were investigated. Experiments were conducted at different initial Fe(III) concentrations (10 mM and 20 mM), while the concentrations of Ag(I) (10 mM), and Cu(II) (1 mM), were kept constant. The silver recovery obtained in the CEM-based reactor (> 99%) was higher than that in AEM-based reactor (58-75%). However, diffusion of Ag(I), Fe(III), and Cu(II) through the CEM was unavoidable. In terms of power generation, a power density of 4515.63 mW/m3 was found in AEM-based reactor, which was higher than that in CEM-based reactor (1542.56 mW/m2). However, the substrate loss was found in the AEM-based reactor due to the transport of negative-charged organic matter through the AEM, which caused a fast decrease of cell voltage. This study successfully demonstrated the feasibility of using a bio-electrochemical system to recover silver coupled with power generation from a synthetic mixed metals solution.

Abstrak :
ABSTRACT
High Annealing Temperature-Random Amplified Polymorphic DNA (HAT-RAPD) markers were used to study the genetic relationship among 15 samples of orchids in the genus Eria. DNA amplification of 31 random primers out of 72 random primers was successful. In this study, we selected 21 random primers with clear amplified products for further genetic analysis. The result showed significant differences among all samples and also showed specific bands in each sample. Moreover, we found 21 random primers which tended to be DNA markers for further identification. Based on polymorphic bands, a dendrogram was constructed. Genetic similarities among 15 samples of Eria species were demonstrated, and the samples could be classified into 3 groups with similarity coefficients ranging from 0.36 to 0.85.

Abstrak :
ABSTRACT
Activated carbons have been the most widely used adsorbent in adsorption system. This study aims to develop the coconut-based activated carbon to treat both organic and inorganic contaminants in polluted air. The proper chemical treatment was selected: nitric acid (HNO3), sodium hydroxide (NaOH) and ammonium nitrate (NH4NO3). For each chemical, varying concentrations of 0.1, 0.5, 1.0, 2.0, 3.0, 4.0 and 5.0 N were used. In a treatment, the activated carbon was soaked and stirred for 8 hours at 70 C in the solution and heated at 105 C for 12 hours and then cooled down in a desiccator for 12 hours. This impregnated activated carbon was observed for the surface characteristics using scanning electron microscope (SEM), analyzed for iodine number and analyzed for amount of functional groups on the surface. The suitable chemical treatment was selected by considering surface characteristics, porosity and chemical property. The adsorption capacity of the impregnated activated carbon was tested and compared with that of the original activated carbon. The treatment with 1.0 N sodium hydroxide (NaOH) appeared to be the most appropriate technique to impregnate for the coconut-based activated carbon to adsorb mixture of organic and inorganic gases. The physical adsorption ability for benzene was reduced by 55.90 percent, while, the chemical adsorption ability for hydrogen sulfide increased by 537.61 percent.

Abstrak :
ABSTRACT
Required Safe Egress Time (RSET) consists of 4 elements, namely, fire detection time, alarm time, pre-evacuation time, and travel or movement time. Pre-evacuation time is currently regarded as the key critical evacuation process. If pre-evacuation time is not explicit, RSET timeline will not be reliable and effect on life of evacuees in the building. The purpose of this cross-sectional study was to develop the model for predicting pre-evacuation time in 10 plastic industries. Regression analysis was performed in order to find the factors significantly associated with pre-evacuation time. Only 4 influenced variables were tested by using regression analysis. Regression analysis and back propagation artificial neural networks model (BP-ANNs) were run to predict pre-evacuation time from 4 influential variables. BP-ANNs model was constructed as 4-10-1 by comprising of 4 input variables, 10 hidden nodes, 1 output variable, momentum was 0.05, learning rate was 0.08, and learning time was 100,000 epochs. The findings revealed BP-ANNs model showed the least error with the value of Mean Absolute Deviation (MAD), Mean Absolute Percentage Error (MAPE), Mean Squared Error (MSE) and Root Mean Square Error (RMSE) were 2.04, 1.64, 1743.90 and 41.76 respectively when comparing with regression analysis model. BP-ANNs model can correctly predict pre-evacuation time with 75.15% accuracy. Therefore, BP-ANNs was an appropriate model for predicting pre-evacuation. This finding showed the advantage of BP-ANNs model which was more suitable to predict RSET and eliminated factors that could delay evacuation time in 10 plastic industries.

Abstrak :
ABSTRACT
This study was to determine albuminuria prevalence and risk associations of albuminuria in people who lived in Klong Luang community. This cross-sectional study was conducted in Klong Luang community, Pathum Thani province, Thailand. The mid-stream urine and blood samples were collected from all participants for albuminuria testing with urine strip and blood urea nitrogen and creatinine analysis, respectively. Binary logistic regression was used for risk association analysis. Among 239 participants enrolled, 32 (13.4%) subjects had albuminuria. Creatinine was a significantly independent risk association for albuminuria (p<0.045, α=0.05). Participants who lived in this community were 13.4% albuminuria prevalence and creatinine was an independent risk association for albuminuria. Thus, Primary Health Care Services should follow up subjects with albuminuria and provide health education program to the Klong Luang community.

Abstrak :
Proper refrigeration for vaccine storage at the recommended temperature by manufacturers is vital. Most of vaccines should be kept between +2°C and +8°C. This study aimed to compare the capability of different attributes of refrigerators (types, purposes and years of utilization of refrigerator) in controlling temperature for vaccine storage. Data were collected from 155 health care facilities in Bangkok, Thailand. Computerized temperature data loggers, LogTag TRIX-8, were used to continuously monitor temperature. The result shows that different types of refrigerators had different capability, and the pharmaceutical refrigerator had the highest mean of capability at 96.61%; better than household two-door and one-door refrigerator, while the capability of household two-door and one-door refrigerator was not statistically different. The purpose and years of utilization group did not relate to the capability to control temperature. In conclusion, a pharmaceutical refrigerator is ideally recommended if possible. A household refrigerator with single purpose is acceptably used for vaccine storage. Regular maintenance and calibration will keep those refrigerators for sustainable capability in controlling the temperature. The findings can be useful as guidance for health care staff in decision making to choose the refrigerator as well as maintain it for vaccine storage.