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ผลงานตีพิมพ์ในวารสารวิชาการVariations in mitragynine content in the naturally growing Kratom (Mitragyna speciosa) population of Thailandผู้แต่ง: Dr.Nisa Leksungnoen, Associate Professor ,  Tushar Andriyas, Dr.Chatchai Ngernsaengsaruay, Associate Professor , Dr.SUWIMON UTHAIRATSAMEE, Assistant Professor , Dr.Phruet Racharak, Assistant Professor , Dr.Weerasin Sonjaroon, Lecturer , Roger Kjelgren, Brian J. Pearson, Christopher R. McCurdy, Abhisheak Sharma, วารสาร:  
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ผลงานตีพิมพ์ในวารสารวิชาการAntimicrobial host defence peptide, LL-37, as a potential vaginal contraceptiveผู้แต่ง:Dr.Nopparat Srakaew, Associate Professor , Charlene D. Young, Arpornrad Saewu, Hongbin Xu, Krista L. Quesnel, Riccardo di Brisco, Kessiri Kongmanas, Duriya Fongmoon, Greanggrai Hommalai, Wattana Weerachatyanukul, Susan H. Hall, Yong-Lian Zhang, Luigi Panza, Laura Franchini, Federica Compostella, TerryW. Pearson, Robert E. Hancock, Richard J. Oko, Louis S. Hermo, Nongnuj Tanphaichitr, วารสาร: |
ผลงานตีพิมพ์ในวารสารวิชาการTracking COVID-19 with wastewater to understand asymptomatic transmissionผู้แต่ง:Wannigama, D.L., Amarasiri, M., Hurst, C., Phattharapornjaroen, P., Abe, S., Hongsing, P., Rad, S.M.A.H., Pearson, L., Mr.Thammakorn Saethang, Assistant Professor, Luk-in, S., Kueakulpattana, N., Storer, R.J., Puey Ounjai, Jacquet, A., Leelahavanichkul, A., Chatsuwan, T., วารสาร: |
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ผลงานตีพิมพ์ในวารสารวิชาการThe modelling of the toughening of epoxy polymers via silica nanoparticles: The effects of volume fraction and particle sizeผู้แต่ง:Bray, D.J., Dr.Peerapan Dittanet, Assistant Professor, Guild, F.J., Kinloch, A.J., Masania, K., Pearson, R.A., Taylor, A.C., วารสาร: 
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ผลงานตีพิมพ์ในวารสารวิชาการวิธีที่ง่ายและรวดเร็วในการตรวจวัดความไวของยาปฏิชีวนะต่อประชากรฟิล์มชีวภาพของ Pseudomonas aeruginosa (2020)ผู้แต่ง:Dhammika Leshan Wannigama, Cameron Hurst, Parichart Hongsing, Lachlan Pearson, Mr.Thammakorn Saethang, Assistant Professor, Naphat Chantaravisoot, Uthaibhorn Singkham-in, Sirirat Luk-in, Robin James Storer , Tanittha Chatsuwan, วารสาร: |
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 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Effects of Age of Rubber (Hevea brasiliensis Muell Arg.) Plantation on pH, Organic Carbon, Organic Matter, Nitrogen and Micronutrient Status of Ultisols in the Humid Forest ผู้เขียน:Effi om Oku, Anthony Iwara, Ekaette Ekukinam สื่อสิ่งพิมพ์:pdf AbstractMicronutrients are required by plants in minute quantities. Literature on the micronutrient status of soils sustaining rubber plantations in the humid forest zone of southern Nigeria is not readily available where a study was carried out on Ultisols to examine the status of manganese (Mn), iron (Fe), Copper (Cu) and zinc (Zn) in rubber plantations aged 7, 16, 39 and 41 yr. A grid sampling method was used to collect soil samples from fi ve quadrats of 10 m ? 10 m in each of the plantation plots. For each plot, fi ve surface (0–15cm) soil samples were randomly collected and composited. The soil samples were analyzed for pH, organic carbon (OC), organic matter (OM), nitrogen (N), Mn, Fe, Cu and Zn. Data were analyzed using analysis of variance and Pearson’s correlation. The soils were strongly acidic (pH 4.0–4.4). The OC status was rated as very low (below 2%) in all the plantation soils. In addition, the OM was rated as low under the trees at 7, 16, and 39 yr whereas, for the 41 year-old plantation, it was rated as high. The Mn and Zn contents were rated as low for the 16, 39 and 41 year-old rubber plantations, whereas they were rated as medium under the 7 year-old rubber plantation. The Mn, Fe and Cu contents varied signifi cantly (P < 0.01 to P < 0.05) with the age of trees, while Zn did not vary (P > 0.05) among the rubber plots. The fertility rating of Fe was toxic or excessive in all the plantations and the levels of Cu were rated high. The results showed that the contents of Zn, Fe, Cu and Mn in the soils decreased with increasing age of rubber plantation. The Mn content was rated as high, medium, medium and low in the 7, 16, 39 and 41 year-old plantations, respectively. The Fe contents were rated as high whereas the Cu contents were rated as medium. With the exception of the 7 year-old plantation, where Zn was rated as medium, the Zn contents were below the critical limits for crop production, with soils in the 16, 39 and 41 year-old rubber plantations benefi ting from its application. The low values of soil pH across the rubber plantation plots did not signifi cantly favour the increase in selected micronutrient levels in the soil. To improve the levels of micronutrients in the rubber plots, it is recommended that biomass burning should be discouraged during replanting as it strips the soil of these nutrients. The use of organo-mineral fertilizer combined with inorganic fertilizers is recommended. Care must be taken not to apply Mn in excess. A rubber-based agroforestry system, as opposed to rubber monocultures is recommended as it would improve the micronutrient levels of the soils in the plantation. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Bias Correction in Estimation of the Population Correlation Coefficient) ผู้เขียน:จุฑาภรณ์ สินสมบูรณ์ทอง สื่อสิ่งพิมพ์:pdf AbstractAn estimator of the population correlation coefficient of two variables for a bivariate normal distribution was proposed and evaluated using comparisons with the Pearson correlation coefficient and an estimator of Olkin and Pratt, conducted using a simulation study. It was found that for a small sample size of n=10, the absolute bias of the proposed estimator was less than those of the Pearson correlation coefficient and an estimator of Olkin and Pratt. In addition, the mean square errors of those estimators seemed to have no difference in each situation for this study. |