Tìm thấy 16+ kết quả cho từ khóa "Total nitrogen"
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The positive associations between total nitrogen uptake with total biomass production and cane yield suggested that higher nitrogen uptake supports better growth performance of sugarcane under rain- fed conditions. From this study, NiF3 and Ni27 could be introduced as the promising sugarcane varieties for better growth performance and high nitrogen uptake under rain-fed conditions..
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It contains total nitrogen of 11.9% and NaCl of 1.4%.. A papaic digest of liver that contains total nitrogen of 11.0%. and NaCl of 1.6%.. A peptone that contains total nitrogen of 9.5% and NaCl of 1.1%.. A pancreatic digest of heart muscle.. An enzymatic digest of protein.. A mixed pancreatic and papaic digest of animal tissues. It contains total nitrogen of 14.0% and NaCl of 1.6%..
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Since most of the nitrogen in soil is organic, determination of total nitrogen has been a common method of estimating organic nitrogen. About 60 to 75% of the mineralized nitrogen may be obtained by a crop (99). The turnover rate of nitrogen in humus may be about 1 to 3% of the total nitrogen of the soil, varying with type of soil, climate, cultivation, and other factors (93,99).
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However, the results indicated that the land in the surveyed area was rich in total nitrogen content according to Kyuma scale, (1976). The unburned straw treatment method might offer an environment with higher organic matter content which supported the activity of microbiological life, and in turn, these microorganisms used up certain amount of nitrogen for their own development, declining the total nitrogen content in the soil.
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The compost in pile A and pile no signi®cantly higher total nitrogen content as com- B (with higher turning frequency) were stabilized en- pared to the other two piles from day 35 forward, which ough at day 49, whereas pile C required a longer time coincided with the signi®cant drop in total organic to reach stabilization according to the GI criterion. Changes in total nitrogen (a), ammoniacal nitrogen (b) and nitrate nitrogen (c) during co-composting of soybean residues and leaves.
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The compost in pile A and pile no signi®cantly higher total nitrogen content as com- B (with higher turning frequency) were stabilized en- pared to the other two piles from day 35 forward, which ough at day 49, whereas pile C required a longer time coincided with the signi®cant drop in total organic to reach stabilization according to the GI criterion. Changes in total nitrogen (a), ammoniacal nitrogen (b) and nitrate nitrogen (c) during co-composting of soybean residues and leaves.
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Figure 7.2: Total COD evolution in all operational periods of the influent and the treated wastewater.. Figure 7.3: Total Nitrogen evolution in all operational periods of the influent and the treated wastewater.. Throughout the experimental time (Periods 1 and 2) total nitrogen concentration in the effluent was lower than 15 mg/L N in accordance with the nitrogen dump limit of the European Directive.
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The application of biosolids had highly significant positive effects on organic carbon (TOC%) and total nitrogen (Ntot. when the six different treatments of composted manure and chicken manure were compared. composted manure (t ha-1) (r2=0.58) or Zn (mg kg-1. chicken manure (t ha-1) (r2=0.73), whereas Cu (Rev Aq Reg) only increased significantly at the Vinh Phuc site.
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A decrease in total nitrogen content of the composting mass was observed during thermophilic phase as represented by the data obtained at 23 rd day of composting (Table 4;. 1 Changes in temperature during the composting process for all piles in relation to the ambient temperature. throughout composting process.. followed by piles inoculated with B. 2 Changes in (a) organic carbon, (b) total nitrogen, and (c) carbon to nitrogen ration during the composting process for all compost piles..
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Similarly, the accumulation of total saponin and polysaccharide were also influenced by initial nitrogen concentration in the medium. maximum production of ginseng saponin and polysaccharide obtained (1.5 g/L and 2.19 g/L) at the initial nitrogen concentration of 40 mM [12]. In the simultaneous production of ginseng saponin and polysaccharide by suspension cultures of P. ginseng, [4] reported that production of ginseng saponin was related with the total nitrogen concentration.
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These concentrations are considered as excessive nitrate nitrogen in the finished compost (Environment Agency, 2000) which could be attributed to nitrification process (Selim et al., 2012). The concentration of NO 3 in treatments and 10 is in the recommended range of good compost as reported by Bordna Mona (2003) and Selim et al. The total nitrogen content, in all treatments, except treatment (2), is in the recommended range as stated by Sanchez-Monedero et al.
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Correlations between CO 2 and temperature, pH, TDS, conductivity, alkalinity, DO, COD, total nitrogen and PO 4 3-.
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TCCS TIÊU CHU Ẩ N C Ơ S Ở TCCS 29 : 2009/PVN Xu ấ t b ả n l ầ n 1 D Ầ U M Ỏ VÀ S Ả N PH Ẩ M D Ẩ U M Ỏ – XÁC ĐỊ NH HÀM L ƯỢ NG NIT Ơ T Ổ NG TRONG D Ầ U NH Ờ N VÀ NHIÊN LI Ệ U ĐỐ T LÒ B Ằ NG PH ƯƠ NG PHÁP KENDAN Petroleum and petroleum products – Determination of total nitrogen content in lubricating oils and fuel oils by Kjeldahl method HÀ N Ộ I – 2009 TCCS 29 : 2009/PVN M ụ c l ụ c Trang L ờ i nói đầ u Ph ạ m vi áp d ụ ng Tài li ệ u vi ệ n d ẫ n Nguyên t ắ c c ủ a ph ươ ng pháp D ụ ng c ụ , thi ế
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Effects of applying wastewater on soil organic carbon and total nitrogen contents . Reuse of wastewater for irrigation caused an increase in total organic carbon (TOC) content and total nitrogen (N tot ) in the soil at both study sites (Fig. The soils that had received wastewater for irrigation had 1.68% . TOC and 0.19% N tot at the Hanoi site and 2.67% TOC and 0.26% N tot at the Nam Dinh site.
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Analysis of multivariate regression of melaleuca forest biomass at different peatland layers and soil parameters such as bulk density, pH, total nitrogen, total phosphorus, organic matter, N-NO 3 - and N-NH 4 + indicated that bulk density and organic matter significantly influence on melaleuca biomass (p<0.05) in the way that dry biomass of the forest would be increased when bulk density increased and organic matter decreased.
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Nutrients were periodically added to the influent tanks of both secondary treated wastewater and freshwater using mM of total nitrogen, total potassium, calcium, phosphorus, magnesium, and iron, respectively, using the following chemicals: K 2 SO 4 , KCl, KNO 3 , Ca(NO 3 ) 2 ·4H 2 O, NH 4 NO 3 , KH 2 PO 4 , MgSO 4 ·7H 2 O, Fe e Na EDTA.
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Total nitrogen and soluble nitrogen contents in the yoghurt samples were determined according to the methods described by AOAC (2007). The extent of proteolysis in the yoghurt samples during storage was calculated as a ratio of soluble nitrogen/total nitrogen (SN/TN ratio). The concentration of acetaldehyde and diacetyl in the yoghurt samples were measured using spectrophotome- ter (Shimadzu, 240-UV–Vis, Japan) as described by Less and Jago (1970)..
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Total nitrogen (TN), total phosphorus (TP), and total alkalinity were determined in the laboratory. The method consists of 3 stages: digestion at a temperature of 340 °C (boiling point of H 2 SO 4 ) in the presence of concentrated sulfuric acid and selenium Kjeldahl catalyst. distillation in the presence of NaOH captured in the solution of boric acid, and titration with 0.1 M HCl in the presence of indicator bromocresol green..
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KHẢ NĂNG HẤP THỤ TAN (TOTAL AMMONIA NITROGEN) CỦA YUCCA TRONG MÔI TRƯỜNG NƯỚC NGỌT. Nghiên cứu “Khả năng hấp thụ ammonia của yucca trong môi trường nước ngọt” nhằm xác định khả năng hấp thụ TAN ( Total Ammonia Nitrogen ) của yucca ở các nồng độ xử lý 0 mg/L, 0,25 mg/L, 0,5 mg/L và 1 mg/L trong môi trường nước ngọt. Nghiên cứu gồm 2 thí nghiệm. Thí nghiệm 1 được thực hiện trong bể 60 lít, không thả cá trong 12 giờ. Yucca được xử lý định kỳ 14 ngày/lần.
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EFFECT OF NITROGEN APPLICATION LEVELS ON GROWTH OF RICE UNDER DROUGHT STRESS CONDITIONS. The aim of this study was to investigate effects of nitrogen (N) application on root system development, photosynthetic rate and dry matter production under different drought stress conditions. Three N fertilizer treatments were applied: 60, 120 and 180 kg N ha -1 .