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 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Experimental Measurement of Specific Gravity of Oncomelania hupensis and Its Eggs) ผู้เขียน: Xingjian Xu, Xianxiang Yang, Chuanhua Yu, Wei Zhang, Qingsang Pan, Zhengan Xiong สื่อสิ่งพิมพ์:pdf AbstractTo understand the distribution of Oncomelania hupensis, the intermediate host of Schistosomiasis japonicum, the specific gravities of the snails and their eggs must be known. When the specific gravities are known, the snail and its egg drop speed can be calculated and drift distance can be deduced in the river. The measurement of specific gravities of snails and eggs was carried out in accordance with the routine measures of specific gravity of river silt in China. The results indicated an average specific gravity for the live snails of 1.80 ? 0.01 g/cm3, and for snail eggs of 2.29 ? 0.01 g/cm3. The measured value of the specific gravity for the snails and its eggs must be considered when water condervancy facilities are disigned and/or rebuilt for prevention of the spread of snails in the endemic area of schistosomiasis. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Comparative Evaluation of Total Solids, Freezing Point and Specific Gravity of Raw Milk Using an Ultrasonic Milk Analyzer Versus Standard Methods) ผู้เขียน: ดร.ประวีร์ วิชชุลตา, รองศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractForty five composite raw milk samples were each subdivided into five portions and then combined with 8, 4 or 0% water, and 2 or 5% whole milk powder (WMP). Ten samples randomly selected from each subsample were comparatively analyzed for their solid content using an ultrasonic milk analyzer (UMA) versus the standard sand-pan oven dry method. Similarly, fifteen samples from each subsample were analyzed for freezing point using the UMA versus a cryoscope. All milk subsamples were also analyzed for specific gravity using the UMA and a lactometer versus the standard gravimetric method. The solid content of the respective milk subsamples averaged 12.61, 12.93, 13.84, 15.31 and 17.52 % while those produced by the UMA averaged 12.81, 13.41, 13.69, 16.02 and 18.82 %. On average, the UMA readings provided a difference of 0.64 % higher (P<0.05) milk solids than the standard method. Mean freezing points of the milk subsamples analyzed by the two methods were -0.512, - 0.531, -0.542, -0.651 and -0.799?C for the UMA and -0.493, -0.508, -0.549, -0.662 and -0.854?C for the cryoscope, respectively. The mean specific gravity determined by the three analysis methods increased (P<0.05) from 1.0265 to 1.0278, 1.0292, 1.0340 and 1.0407 for the five respective milk subsamples. The UMA as well as the lactometer consistently provided higher (P<0.05) specific gravity values than the standard oven dry method for all milk subsamples. However, on average, a difference of only 0.0014 specific gravity was observed between the UMA and the standard method. Contrary to this, a greater difference (P<0.05) of 0.0043 specific gravity was evident between the lactometer and the standard method. It was therefore considered advisable that the UMA instruments be regularly calibrated with the local raw milk standard. It was also recommended that the accuracy of lactometers be evaluated and their specific gravity readings be adjusted accordingly. |
ผลงานตีพิมพ์ในวารสารวิชาการOptical, dielectric and X-ray absorption properties of soda-based glass fabricated from Thai quartz sands doped with iron oxideผู้แต่ง:Mr.Sorapong Pongkrapan, Lecturer , Yamban, S., Dr.KRIT WON-IN, Assistant Professor , Dararutana, P., Sirikulrat, N., วารสาร: 
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การประชุมวิชาการOptical, dielectric and X-ray absorption properties of soda-based glass fabricated from Thai quartz sands doped with iron oxideผู้แต่ง:Mr.Sorapong Pongkrapan, Lecturer, Yamban, S., Dr.KRIT WON-IN, Assistant Professor, Dararutana, P., Sirikulrat, N., การประชุมวิชาการ: |
การประชุมวิชาการAnalysis of barium-bearing glass doped with chromium oxideผู้แต่ง:Dr.KRIT WON-IN, Assistant Professor, Dutchaneephet, J., Mr.Sorapong Pongkrapan, Lecturer, Sirikulrat, N., Dararutana, P., การประชุมวิชาการ: |
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ผลงานตีพิมพ์ในวารสารวิชาการSize-dependent intraspecific variation in wood traits has little impact on aboveground carbon estimates in a tropical forest landscapeผู้แต่ง:Thripob, P., Fortunel, C., Rรฉjou-Mรฉchain, M., Nathalang, A., Dr.Wirong Chanthorn, Associate Professor , วารสาร: |
ผลงานตีพิมพ์ในวารสารวิชาการSurfactants affect urea deproteinization and subsequent prevulcanization of natural rubber latexผู้แต่ง:Wiroonpochit, P., Sarilak, D., Ms.WIMONRUT INSUAN, Assistant Professor , Dr.Tthippayarat Chahomchuen, Assistant Professor , Dr.Rungsima Chollakup, Chisti, Y., Dr.Nanthiya Hansupalak, Associate Professor , วารสาร: |
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ผลงานตีพิมพ์ในวารสารวิชาการPorosity, density and mechanical properties of the paper of steam exploded bamboo microfibers controlled by nanofibrillated celluloseผู้แต่ง:Tanpichai, S., Dr.Suteera Witayakran, Srimarut, Y., Woraprayote, W., Malila, Y., วารสาร: 
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หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Using an Effective Microorganism Supplementation in Layers) ผู้เขียน:Sasitorn Chotisasitorn, ดร.สมชัย จันทร์สว่าง, รองศาสตราจารย์, ดร.เสกสม อาตมางกูร, ผู้ช่วยศาสตราจารย์ , Attawoot Plaiboon สื่อสิ่งพิมพ์:pdf AbstractAn experiment was conducted to study the effects of supplementation of EM ( effective microorganism ) in feed on laying performance and egg quality. A 2x3 Factorial in Completely Randomized Design with 4 replications, using the total numbers of 288 layers was utilized. In one factor, supplementation and non-supplementation of EM were applied. In the other factor, supplementation of calcium at levels of 3, 3.5 and 4% were used. Results of the study, over the 3 period, 28 days per period revealed that there were no significant effects of supplementation of EM on daily feed intake, body weight gain, mortality, egg mass, egg weight, albumin weight, yolk weight, egg shell weight, yolk color and haugh unit (P>0.05). But egg production (P<0.05), feed per 1 dozen egg and specific gravity were highly significant difference (P<0.01). |
 Researcherดร. ฤดีรัตน์ สันตะโก, ผู้ช่วยศาสตราจารย์ที่ทำงาน:ภาควิชาวิทยาศาสตร์กายภาพและวัสดุศาสตร์ คณะศิลปศาสตร์และวิทยาศาสตร์ สาขาที่สนใจ:การกระจายตัวของอนุภาคระดับนาโนในสารแขวนลอยที่มีน้ำเป็นตัวกลาง, การสังเคราะห์อนุภาคชิงก์ออกไซด์ระดับนาโน, การปรับปรุงลักษณะการคงรูปและสมบัติเชิงกลของยางธรรมชาติที่ผ่านกระบวนการวัลคาไนเซชัน Resume |
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