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| 1 | Optimizing electrocoagulation process for the treatment of biodiesel wastewater using response surface methodology显示文摘The production of biodiesel through a transesterification method produces a large amount of wastewater that contains high levels of chemical oxygen demand (COD) and oil and grease (O&G). Currently, flotation is the conventional primary treatment for O&G removal prior to biological treatments. In this study, electrocoagulation (EC) was adopted to treat the biodiesel wastewater. The effects of initial pH, applied voltage, and reaction time on the EC process for the removal of COD, O&G, and suspended solids (SS) were investigated using one factor at a time experiment. Furthermore, the Box-Behnken design, an experimental design for response surface methodology (RSM), was used to create a set of 15 experimental runs needed for optimizing of the operating conditions. Quadratic regression models with estimated coefficients were developed to describe the pollutant removals. The experimental results show that EC could effectively reduce COD, O&G, and SS by 55.43%, 98.42%, and 96.59%, respectively, at the optimum conditions of pH 6.06, applied voltage 18.2 V, and reaction time 23.5 min. The experimental observations were in reasonable agreement with the modeled values. | Orathai Chavalparit Maneerat Ongwandee | 2009 | Journal of Environmental Sciences2009，21，11： | 12 |
| 2 | Application of Pectin Crude Extract from Krung Kha Mao Leaves (Cissampelos pareira L.) for Immobilization of Lactobacillus casei subsp, rhamnosus TISTR 108 and Lactobacillus delbrueckii subsp, bulgaricus TISTR 1339 on Lactic Acid Production显示文摘 | S. Choojun W. Orathai | 2011 | Journal of Agricultural Science and Technology(B)2011，1，8： | 2 |
| 3 | Effects of Pd precursors on the catalytic activity and deactivation of silica-supported Pd catalysts in liquid phase hydrogenation显示文摘 | JOONGJAI P ORATHAI T PIYASAN P | 2005 | Applied Catalysis A2005，292，： | 1 |
| 4 | Receptor - based virtualscreening of EGFR kinase inhibitors from the NCI diversity database显示文摘 | Kiattawee C Orathai S Napat S | 2010 | Molecules2010，15，6： | 1 |
| 5 | Biosurfactant production by Pseudomonas aeruginosa SP4 using sequencing batch reactors: Effects of oil loading rate and cycle time 显示文摘 | Orathai Pornsunthorntawee Sasiwan Maksung Onsiri Huayyai | 2009 | Bioresource Technology2009，100，： | 1 |
| 6 | A bench-scale study on chromium recov- ery from tanning wastewater 显示文摘 | Thongchai Panswad Orathai Chaval- parit Yaowanud Sucharittham | 1995 | Water Science and Technology1995，31，9： | 1 |
| 7 | Water quality and occurrences of protozoa and metazoa in two constructed wetlands treating different wastewaters in Thailand显示文摘 | Orathai C | 1997 | Water Sci Tech1997，36，12： | 1 |
| 8 | Additive immunosuppressive effects of 1,25-dihydroxyvitamin D 3 and corticosteroids on T H 1, but not T H 2, responses显示文摘 | Orathai Jirapongsananuruk Isaac Melamed Donald Y.M. Leung | 2000 | The Journal of Allergy and Clinical Immunology2000，，5： | 1 |
| 9 | Purification and concentration of a rhamnolipid biosurfactant produced by Pseudomonas aeruginosa SP4 using foam fractionation显示文摘 | Sarachat Thitima Pornsunthorntawee Orathai Chavadej S | 2010 | Bioresource Technology2010，101，1： | 1 |
| 10 | The first year nursing students achievement and critical thinking in local wisdom course using problem based learning process显示文摘 | Somporn Santiprasitkul Kanjanee Sithivong Orathai Polnueang- ma | 2013 | Wireless Personal Communications2013，69，3： | 1 |
| 11 | Piperine, the potential functional food for mood and cognitive disorders显示文摘 | Jintanaporn Wattanathorn Pennapa Chonpathompikunlert Supaporn Muchimapura Aroonsri Priprem Orathai Tankamnerdthai | 2008 | Food and Chemical Toxicology2008，，9： | 1 |
| 12 | Water quality and occurrences of protozoa and metagoa in two constructed wedands treating different wastewaters in Thai-land显示文摘 | Thongchai P Orathai C | 1997 | Water Science and Technology1997，36，12： | 1 |
| 13 | Clean technology for the tapioca starch industry in Thailand 显示文摘 | ORATHAI C MANEERAT O | 2008 | Journal of Cleaner Production2008，172，： | 1 |
| 14 | Inhibitory activity of cinnamon bark species and their comb ination effect with aearbose against intestinal~x- glucosi dase and pancreatic ot -amylase显示文摘 | Siric hai Adisakw attana Orathai Ler dsuwan kij Ubonwan Poputtachai et a/ | 2011 | Plant Foods Hum Nutr2011，，66： | 1 |
| 15 | Synthesis of polyaniline nanofibers and nanotubes via rhamnolipid biosurfactant templating显示文摘 | Panisara Worakitsiri Orathai Pornsunthorntawee Tuspon Thanpitcha Sumaeth Chavadej Christoph Weder Ratana Rujiravanit | 2010 | Synthetic Metals2010，，3： | 1 |
| 16 | Clean technology for the tapioca starch industry in Thailand显示文摘 | Orathai Chavalparit | | 0，，： | 1 |
| 17 | Biofilm formation in trimethoprim/sulfamethoxazole-susceptible and trimethoprim/sulfamethoxazoleresistant uropathogenic Escherichia coli显示文摘Objective: To compare bioi lm formation in trimethoprim/sulfamethoxazole(SXT)-susceptible Escherichia coli(E. coli)(SSEC) and SXT-resistant E. coli(SREC) isolated from patients with urinary tract infections, and study the motile ability and physical characteristics of the isolates.Methods: A total of 74 E. coli isolates were tested for antimicrobial susceptibility with the disc diffusion assay. Based on the SXT-susceptibility test, the E. coli isolates were divided into SSEC(N = 30) and SREC(N = 44) groups. All E. coli isolates were examined for motile ability by using a motility test medium, and for checking bioi lm formation a scanning electron microscope was used. Bacterial colony size was measured with a vernier caliper and bacterial cell length was measured under a light microscope. The bacterial growth rate was studied by plotting the cell growth(absorbance) versus the incubation time. Results: The frequencies of non-motility and biofilm formation in the SREC group were signii cantly higher than that in the SSEC group(P < 0.01). The SREC bacterial cell length was shorter than that in the SSEC group [(1.35 ± 0.05) vs.(1.53 ± 0.05) μm, P < 0.05)], whereas the bacterial colony size and mid-log phase of the growth curve were not signii cantly dif erent. Conclusions: The present study indicated that bioi lm formation and phenotypic change of uropathogenic E. coli can be attributed to the mechanism of E. coli SXT resistance. | Nitis Smanthong Ratree Tavichakorntrakool Phitsamai Saisud Vitoon Prasongwatana Pipat Sribenjalux Aroonlug Lulitanond Orathai Tunkamnerdthai Chaisiri Wongkham Patcharee Boonsiri | 2015 | Asian Pacific Journal of Tropical Biomedicine2015，5，6： | 0 |
| 18 | Commuter exposure to BTEX in public transportation modes in Bangkok, Thailand显示文摘Measurements and monitoring of volatile organic compounds (VOCs) have been conducted in the metropolitan Bangkok. However, in-vehicle levels of VOCs are still lacking. This study investigated VOCs concentrations in four public transportation modes in Bangkok, Thailand during two rush hour periods (7:00-9:00 a.m. and 4:00-7:00 p.m.). The four modes included an air-conditioned bus (A/C bus), non-air-conditioned bus (non-A/C bus), electric sky train, and a passenger boat traveling along the canal. Comparison among three important bus routes was also studied. In-vehicle air samples were collected using charcoal sorbent tubes and then analyzed by a gas chromatography-mass spectrometer. Results showed that the transportation modes significantly influenced the abundance of in-vehicle benzene, toluene, ethylbenzene, and m,p-xylene (BTEX). Median concentrations of BTEX were 11.7, 103, 11.7, and 42.8 μg/m3 in A/C bus; 37.1, 174, 14.7, and 55.4 μg/m3 in non-A/C bus; 2.0, 36.9, 0.5, and 0.5 μg/m3 in sky train; and 3.1, 58.5, 0.5, and 6.2 μg/m3 in boat, respectively. Wilcoxon rank sum test indicated that toluene and m,p-xylene in the sky trains were statistically lower than that in the other three modes at a p-value of 0.05. There were statistical differences in TEX concentrations among the bus routes in the non-A/C buses. In addition, the benzene to toluene ratios implied that tail-pipe emissions were important contributor to the abundance of in-vehicle VOCs. | Maneerat Ongwandee Orathai Chavalparit | 2010 | Journal of Environmental Sciences2010，22，3： | 0 |
| 19 | The Process of Policy Implementation: The Policy of HIV/AIDS Prevention in Youth Groups in Thailand显示文摘 | Orathai Srithongtham Taweewun Chaleechrua Bancha Promdit | 2013 | Journal of Sociology Study2013，3，3： | 0 |
| 20 | Development and psychometric evaluation of the Ethical Behavior for Thai Nurses Scale显示文摘Background:Ethical problems in the nursing profession are mostly found in the undesirable ethical behavior(EBE)of nurses.If there is no concern about these problems,it may negatively affect the quality of nursing care,patients’safety,and trust in the nursing profession.In assessing nurses’EBE,it is important to develop an instrument that reflects the actual EBE of nurses.Objectives:To develop and evaluate the psychometric properties of the Ethical Behavior for Thai Nurses Scale(EBTNS).Methods:The construct definition,5 sub-constructs,43 items,and the hypothesized model were synthesized and generated from a comprehensive literature review and existing research instruments by using document analysis.The EBTNS was verified for content validity by 4 experts.Of the 43 items,37 items were retained for psychometric testing.The construct validity was tested by using second-order confirmatory factor analysis(CFA).The EBTNS was tested on 1500 professional nurses working at tertiary,secondary,and primary hospitals in 6 regions(the central,northern,northeast,eastern,western,and southern)of Thailand.Proportional quota sampling was applied to recruit participants.Results:The hypothesized model fitted the empirical data.All 37 first-order indicators and 5 second-order sub-constructs showed significantly standardized factor loadings and effect sizes.The standardized factor loadings of 37 first-order indicators ranged from 0.58 to 0.89,and the construct reliabilities were moderate to substantial(R2=0.34-0.79).The 5 second-order sub-constructs displayed the standardized effect sizes,ranging from 0.81 to 0.96,and accounted for 65%-96%of the total explained variance.In addition,the construct validity was supported by convergent validity and discriminant validity.It also satisfied Cronbach’s alpha coefficients of 5 sub-constructs from 0.87 to 0.94,and a full scale was 0.97.Conclusions:The psychometric properties of the EBTNS are acceptable.This instrument has the potential to be used for evaluating and monitoring to prevent ethical problems of Thai nurses. | Pisamai Orathai Wonnapha Prapaipanich Manee Arpanantikul Supanee Senadisai | 2022 | Frontiers of Nursing2022，9，3： | 0 |
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