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Showing 1 to 16 of 16 for “"(NH4)2SO4"”.
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The effect of post-harvest ammonium sulphate application, planting time and sucker size on plant growth and yield of queen pineapple, ananas comosus
… of subsequent plantings. Post-harvest (NH4)2SO4 application had a significant influence on the percentage increase in sucker fresh mass and length when interacting with the duration of sucker growth on the mother plant. Growing suckers on the mother plant for up to 8 months, after the …
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Nitrogen deposition and nitrification in coniferous forests’
… been developed. In particular, N in the form of NH4, in excess to plant and microbial demands could lead to soil acidification if nitrified in the soil and leached, causing loss of base cations or mobilisation of phytotoxic aluminium. Nutrient imbalances due to high soil solution NH4/cation …
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Nitrification suppression and spinach growth in alkaline soil
A single at-planting application of (NH4)2SO4 with and without nitrapyrin, [2-chloro-6-(trichloromethyl) pyridine], was evaluated on spinach in alkaline soil in 2 field experiments and 1 greenhouse experiment. Parameters measured were soil NH4 -N and NO3 -N, spinach yield, leaf color and leaf P, Fe …
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Modeling and measurement of sodium chloride and ammonium sulfate droplet growth in laminar flow
… chloride (NaCl) and ammonium sulfate ( (NH4)2SO4)—are investigated at multiple concentrations in a controlled laminar-flow environment. Droplets are generated via ultrasonic nebulization, transported through a polyethylene tube under well-characterized temperature and humidity, and …
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Soil Properties That Influence the Occurrence of Hydrogen Sulfide Toxicity in Rice Fields
… H2S toxicity, iii) determine ammonium sulfate ((NH4)2SO4) fertilizer additions influence on H2S toxicity, and iv) predict when and where H2S will occur. Three greenhouse experiments were conducted using Arkansas field soils with varying degrees of H2S toxicity history. Half of the soils were …
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Electrocaloric materials and devices
… be compiled. Single crystals of inorganic salts (NH4)2SO4 , KNO3 and NaNO2 were obtained. Applying 380 kV cm−1 across (NH4)2SO4 , it was found that |∆S| ∼ 20 J K−1 kg−1 and |∆T | ∼ 4 K, using the indirect method near the Curie temperature TC = 223 K. Without the ‘resetting’ indirect method, |∆S| ∼ …
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Synthesis and characterizations of nanostructured MnO2 electrodes for supercapacitors applications
… under low temperature, whereas MnSO4.4H2O, (NH4)2S2O8 and (NH4)2SO4 were co-precipitated under hydrothermal conditions in a taflon autoclave to synthesise various -MnO2 nano-structures.
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Fundamental Studies on the Extraction of Rare Earth Elements from Ion Adsorption Clays
… using the ion-exchange leaching process using (NH4)2SO4 as lixiviant. It also happens that IACs are the largest source of the heavy rare earth elements (HREEs) that are critical, especially for the defense industry. At present, more than 80% of the HREEs are produced commercially from the IACs …
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Hydrometallurgical Processing Of Rare Earth Elements From Ion Adsorption Clays
… clays in un-agitated systems is in the order (NH4)2SO4 > MgCl2.6H2O > NaCl > MgSO4.7H2O.
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Elucidating the chemistry of particulate and chlorinated nitrates in the troposphere through method development, and chamber and field studies
… An upper limit of γ< 4x10-4 was determined for (NH4)2SO4 and NH4HSO4 aerosol, but larger values were needed for monoterpene derived SOA, i.e., γ=(8+/-2)x10-4. Uptake of ClNO2 on SOA reduces its lifetime and impact on nitrogen oxide and chlorine budgets downwind of coastal areas where marine and …
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Investigation of a hydrometallurgical process route to recover metals from waste printed circuit boards
… found to be; 750 ml mixture of 4 M NH3, 2 M (NH4)2SO4, 100ppm CuSO4 at 25 °C and 500 rpm using the optimal pre-treatment method for the PCBs.
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Comparative Proteomic Analysis of Neem (Azadirachta indica) Seed and Leaves
… were precipitated with 80% ammonium sulphate(NH4)2SO4. The crude extracts were dialyzed in water using a 3.5 MWCO dialysis tubing and then lyophilized. The anticancer bioactivity of Neem leaves and Seeds Crude protein at different concentrations was evaluated against MDA-MB-231 and MCF-7 cells …
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From the Endoplasmic Reticulum to the Golgi Apparatus : In Vitro and In Vivo Approaches to Understanding COPII Vesicle Function in Plant Cells
… of COPII vesicle using ER-rich microsome, 30% (NH4)2SO4 cytosol GMP-PNP and ATP regenerating system. The vesicle budding was enhanced when ER-rich microsome from a Sec12 overproducer and more Sar1p are available in the budding mixture. Putative COPII vesicles were isolated from a flotation …
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Endogenous cardioactive substances in blood: effects on the isolated guinea-pig atria
… included precipitation techniques involving (NH4)2SO4 and polyethyleneglycol-8000, ion exchange, hydrophobic interaction chromatography and gel filtration. Attempts to isolate and purify the cardiotonic agent were largely unsuccessful due, particularly, to the labile nature of the active …
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Conversion of hydrocarbons to biosurfactants : an insight into the bioprocess optimisation of biosurfactant production using alkanes as inducers
… combinations of three nitrogen compounds, NH4NO3, NaNO3 and (NH4)2SO4. During the study, long chain liquid n-alkanes were used as sole carbon source and the C/N ratio maintained at the value of 18.6 in mass terms. Results confirmed that both a combination of NO3 ' and NH4+ ions or a …
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Improving an aqueous two-phase process for C-phycocyanin extraction from Spirulina
… on literature information. This model used (NH4)2SO4 precipitation as in the original process and required two precipitation stages for final purification. The fifth simulation used the pre-treatment process as in simulation 4, with the second precipitation step replaced with …