 |
 การประชุมวิชาการDetermination of Total Nitrogen and Sodium Chloride in Thai Commercial Fish sauces by using NIR Spectroscopy with Artificial Neural Networksผู้แต่ง: Ritthiruangdej, P,  Dr.Thongchai Suwonsichon, Associate Professor , Dr.Saowanee Lertworasirikul, Associate Professor , Mr.Vichai Haruthaithanasan, Associate Professor , Mrs.WARUNEE THANAPASE , Ozaki, Y., การประชุมวิชาการ: |
|
|
ผลงานตีพิมพ์ในวารสารวิชาการDetermination of total nitrogen content, pH, density, refractive index, and brix in Thai fish sauces and their classification by near infrared spectroscopy with searching combination moving window partial least squares.ผู้แต่ง:ปิติพร ฤทธิเรืองเดช, Dr.Sumaporn Kasemsumran , Dr.Thongchai Suwonsichon, Associate Professor, Mr.Vichai Haruthaithanasan, Associate Professor, Mrs.WARUNEE THANAPASE, Yukihiro Ozaki, วารสาร:  
|
|
|
|
|
 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Total Nonstructural Carbohydrate and Total Nitrogen Content in Leaves and Terminal Shoots of Mango (Mangifera indica L.) var. Nam Dok Mai throughout the Year) ผู้เขียน:Sirichai Kanlayanarat, ดร.สุรนันต์ สุภัทรพันธุ์, ศาสตราจารย์, Chalongchai Baabprasert สื่อสิ่งพิมพ์:pdf AbstractSeasonal changes in total nonstructural carbohydrates and total nitrogen contents in leaves and terminal shoots of mango (Mangifera indica L.) var ‘Nam Dok Mai’ were studied at every 4 weeks interval during June 1978 to May 1979. Total nonstructural carbohydrates in leaves and terminal shoots were found increased at two peaks, first in June, before the flush of new shoots and second in January, before flowering. The nitrogen contents in leaves and terminal shoots were high during the period from June to December, then decreased rapidly. In early January, total nonstructural carbohydrates were increased with the decreased in total nitrogen this phenomena was at the same period of flower initiation. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Effect of Waterstress on Total Nonstructural Carbohydrates, Total Nitrogen Contents in Leaves and Stem Apexes of Tangerine (Citrus reticulata Blanco cv. Khiew-Waan)) ผู้เขียน:Pornpun kitinunprakorn, ดร.สุรนันต์ สุภัทรพันธุ์, ศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractThe effect of waterstress on total nonstructural carbohydrates, total nitrogen contents in leaves and stem apexes- of tangerine (Citrus reticulata Blanco cv. Khiew-Wann) was studied at Tumbol Bung Ba, Nong Sua, Patum-Thani Province and at the Physiological laboratory, Horticulture Department, Faculty of Agriculture, Kasetsart University, during January 1985 to August 1986. The results showed that the plants under the waterstress conditions tended to contain higher total nonstructural carbohydrate contents in leaves and stem apexes than those under the normal irrigation. The lowest content of total nonstructural carbohydrate was found during the flushing period of the plants. Total nitrogen contents in leaves and stem apexes under the waterstress conditions the total nitrogen content in leaves was higher than that in the stem spexes. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Effect of Daminozide on total Nonstructural Carbohydrates, Total Nitrogen Contents in Leaves and Stem Apexes in Relation to Flowering Ability of Tangeri ผู้เขียน:ดร.ณรงค์ จึงสมานญาติ, รองศาสตราจารย์, ดร.สุรัตน์วดี จิวะจินดา , นายวีระพล จันทร์สวรรค์, รองศาสตราจารย์ , Udom Kaewsuwan, Panas Buranasilpin สื่อสิ่งพิมพ์:pdf AbstractThe effect of daminozide on flowering, total nonstructural carbohydrates, total nitrogen contents in leaves and stem apexes of tangerine (Citrus reticulate Blanco cv. Khiew-Waan) was studied during January 1985 to Apil 1985. The results showed that daminozide at 2,000 4,000 and 6,000 ppm applied under the normal irrigation condition tened to increase flowering. The rate of 6,000 ppm gave the highest percentage of flowering (38.8%) while the untreated trees produced the lowest percentage of flowering (13.1%). Daminozide at all concentrations showed no effect on the total nonstructural carbohydrate contents in leaves and stem apexes compared to the untreated trees. Daminozide had no effect on the total nitrogen contents after application until flushing but after that flushing stage the trees having daminozide at 6,000 ppm tended to contain the highest total nitrogen contents in leaves and stem apexes. |
 |
|
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Equations for Estimating Nitrogen Fertilizer Requirements from Soil Analysis for Maize (Zea Mays L.) Grown on Alfisols of Northwestern Ethiopia) ผู้เขียน:Yihenew G. Selassie, ดร.อำนาจ สุวรรณฤทธิ์, ศาสตราจารย์เกียรติคุณ, นายชัยฤกษ์ สุวรรณรัตน์, ผู้ช่วยศาสตราจารย์, ดร.เอ็จ สโรบล, ศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractWith the prime objective of developing equations for estimating nitrogen fertilizer requirements of maize on Alfisols of Northwestern Ethiopia, field experiments were conducted at 20 sites. At each site, the treatments (five rates of N fertilizer) were arranged in a randomized complete block design with four replications. After maturity, yields and yield components data were collected. Soil parameters determined for indexing availability of nitrogen were organic matter content, total N, NH4-N, NO3-N, inorganic N (NH4+NO3-N), inorganic N production on aerobic incubation, and ammonium-N released on autoclaving with dilute calcium chloride. Reliable methods were identified by fitting relative grain, relative dry biomass and N yields in a double log curvilinear regression model and those availability indices giving superior correlation were selected. Consequently, nitrogen availability indices that were found most reliable and grain yield data were fitted into the Mitscherlich-Bray model. Results of the experiment revealed that organic matter, total N, and NO3-N were the most reliable N availability indices. The equations developed for estimating N fertilizer requirements of maize were: (a) log (100 - y) = 2 - 0.1103b - 0.006411x; (b) log (100 - y ) = 2 - 2.0566b - 0.006481x; and (c) log (100 - y) = 2 - 0.0220b - 0.006414x for organic matter, total N and NO3-N, respectively, where y was relative yield goal, b was N availability index expressed as % for the former two indices and mg kg-1 for the later, and x was the N fertilizer requirement. The three equations were statistically proven to give equally reliable estimates of N fertilizer requirement of maize on Alfisols of Northwestern Ethiopia. Nevertheless, in seasons where rainfall is heavy, high probability of nitrate leaching may make the later method less effective. |
หัวเรื่อง:ผลของปัจจัยสภาพแวดล้อมที่มีต่อปริมาณคาร์โบไฮเดรต ไนโตรเจนในใบและการเกิดตาดอกของเงาะโรงเรียน ผู้เขียน:กวิศร์ วานิชกุล, Yongyuth Osotsapa, ดร.สุรนันต์ สุภัทรพันธุ์, ศาสตราจารย์, นางสาวสุมน มาสุธน, รองศาสตราจารย์, ดร.จงรักษ์ แก้วประสิทธิ์, รองศาสตราจารย์ , Malee Na Nakorn สื่อสิ่งพิมพ์:pdf AbstractStudies on the relationship between total nonstructural carbohydrate and total nitrogen in leaves of rambutan (Nephelium Lappaceum L. cv. Rong Rian) and climatic factors were conducted at Amphoe Khao Saming. Trat Province during November 1987 – January 1988. The results showed that, during the period of water stress (after rainy season), total nonstructural carbohydrate contents in leaves was found to increase until flower bud initiation on the middle of January. Total nitrogen contents seemed to accumulate slowly under water stress condition. However, C/N ratio was increased before flowering period and flower bud initiation was found at the C/N ratio 4.5-4.6 |
หัวเรื่อง:การเปลี่ยนแปลงตามฤดูกาลของปริมาณคาร์โบไฮเดรตและไนโตรเจนในกิ่งและใบของต้นกีวีฟรุตพันธุ์บรูโน ผู้เขียน:นายสังคม เตชะวงค์เสถียร, ดร.สุรนันต์ สุภัทรพันธุ์, ศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractSeasonal changes on the carbohydrates and nitrogen contents in leaves and vines of kiwifruit plants. cv. Bruno, grown at the Royal Ang Khang Station, Amphur Fang, Chiang Mai Province, were investigated between the period of September 1981 to August 1982. It was found that seasonal changes on the carbohydrate contents followed the same pattern as those of other temperate woody plants. The maximal peak of carbohydrate contests in the form of reducing sugars in vines were found at the end of the dormant season in February (49.09 mg/g). Carbohydrates in the form of total nonstructural carbohydrates (TNC) were at maximum when the buds burst in March (57.08 mg/g). Both forms of carbohydrates were at the lowest level in August ( 8.39 and 9.82 mg/g , respectively). In leaves, both forms (reducing sugars and TNC) were at the highest when the leaves mutured in October ( 31.64 and 33.40 mg/g, respectively), and were at the lowest level during the earlier stage of leaf development in May ( 7.3 and 11.91 mg/g, respectively). Total nitrogen contents varied with the growth phase. In vines, the contents did not differ during August to February ( 6.35 and 8.58 mg/g ). The contents were high during the early stage of new shoots (March to May). The highest level was in March (12.0 mg/g ). The contents in leaves were at the highest level in June ( 39.68 mg/g ) when the leaves were young, As the leaves aged the nitrogen contents declined and reached the lowest level in November ( 28.37 mg/g ). |
หัวเรื่อง:การวิเคราะห์ปริมาณไนโตรเจนในเมล็ดถั่วเหลืองโดยเทคนิคเชิงนิวเคลียร์ ผู้เขียน:ดร.นวลฉวี รุ่งธนเกียรติ, ศาสตราจารย์ , Areerat Kornduangkaeo, Varavuth Kajornrith, Chutima Kranrod สื่อสิ่งพิมพ์:pdf AbstractChiang Mai 60, SJ 5, and Doi Kham soybean varieties were grown in pots and fertilized with 0, 20, 40 kg N/ha. It was found that these 3 soybean varieties gave higher seed yield with increasing of N fertilizer. The harvested seeds then were analyzed for nitrogen content using nuclear technique (neutron activation) and standard chemical analysis. For neutron activation analysis, seeds were irradiated with fast neutron at the flux of 2.5?1011 n.cm-2.s-1 from Thai Research Reactor, TRIGA Mark 3 type, at the Office of Atomic Energy for Peace. The emitted gamma rays of 0.511 MeV from 13N of nuclear reaction 14N(n,2n)13N caused by the annihilation of positron disintegrated were measured by the semiconductor detector (HPGe). Ammonium nitrate was used as standard and the interfering activities induced by phosphorus and potassium and from recoil proton were also corrected. From qualitative analysis using neutron activation, N, P, K, Mn, Mg, Ar, and Al were found in the soybean seed. The average nitrogen contents in soybean are 7.024% and 6.809% as determined by nuclear technique and by chemical method, respectively. The results from these two methods of analysis were considerably comparable. |
|
ผลงานตีพิมพ์ในวารสารวิชาการInfluence of soil texture and mineralogy on organic matter content and composition in physically separated fractions soils of Thailandผู้แต่ง:Jindaluang, W., Mr.Irb Kheoruenromne, Emeritus Professor , Ms.Anchalee Suddhiprakarn, Emeritus Professor , Singh, B.P., Singh, B., วารสาร:  |