rapeseed/potasyòm

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Butanolysis: Comparison of potassium hydroxide and potassium tert-butoxide as catalyst for biodiesel preparing from rapeseed oil.

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Biodiesel is a mixture of esters of fatty acids (most often palmitic, stearic and oleic) and lower alcohols (in our work butanol) produced by transesterification. It is a renewable source of energy, prepared from triacylglycerides, which are contained in vegetable oils and animal fats. This work

Genetic dissection of root morphological traits as related to potassium use efficiency in rapeseed under two contrasting potassium levels by hydroponics.

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To reveal the genetic basis of potassium use efficiency (KUE) in rapeseed, root morphology (RM), biomass and KUE-related traits were measured in a recombinant inbred line population with 175 F₇ lines that were subjected to high-potassium (HK) and low-potassium (LK) treatments by

[Influence of rapeseed oil feeding on morphology and oxidative properties of mitochondria isolated from the rat heart].

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Mitochondria from heart of rats fed a diet rich in rapeseed oil for two months from weaning, oxidized oleic acid a little better than those from animals fed a control diet containing peanut oil; but their activity decreased much more in presence of potassium cyanide which is an oxidation inhibitor.

Combined effect of water and KOH on rapeseed oil methanolysis.

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This paper deals with the effect of water and catalyst (KOH) amount on the quantity and quality of transesterification products of rapeseed oil by methanol, the methyl ester phase (i.e. yield, conversion), and the side-product, the glycerol phase (i.e. density, viscosity, the mass fraction of

The effect of the acidity of rapeseed oil on its transesterification.

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The aim of this work is to study the transesterification of vegetable oil with a high acid number at unchanged reaction conditions. Rapeseed oil was used as the raw material and its acid number was changed by the addition of oleic acid (from 0.89 to 12.25 mg KOH/g). Methanol was used for

Study of effects of some reaction conditions on ethanolysis of rapeseed oil with dispergation.

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The alkaline-catalyzed (KOH) ethanolysis of rapeseed oil with the help of a mechanical disperser was researched in this study. The effects of chosen reaction conditions (independent variables: the reaction temperature and time, the amount of catalyst, the molar ratio ethanol to oil and the rotation

Effects of a controlled-release fertilizer on yield, nutrient uptake, and fertilizer usage efficiency in early ripening rapeseed (Brassica napus L.).

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BACKGROUND Nitrogen (N), phosphorous (P), and potassium (K) are critical nutrient elements necessary for crop plant growth and development. However, excessive inputs will lead to inefficient usage and cause excessive nutrient losses in the field environment, and also adversely affect the soil, water

Effects of long term rice straw application on the microbial communities of rapeseed rhizosphere in a paddy-upland rotation system.

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The influence of the rice straw application on rhizosphere microbial communities in the long-term rotation system remains unclear. Two experimental sites (Jingzhou and Wuxue) with the same straw fertilization have been cultivated under the rapeseed-rice rotation mode for 7years. Eco-plate data

Long-term straw returning affects Nitrospira-like nitrite oxidizing bacterial community in a rapeseed-rice rotation soil.

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Nitrospira are the most widespread and well known nitrite-oxidizing bacteria (NOB) and putatively key nitrite-oxidizers in acidic ecosystems. Nevertheless, their ecology in agriculture soils has not been well studied. To understand the impact of straw incorporation on soil Nitrospira-like bacterial

Phytoextraction of potentially toxic elements by Indian mustard, rapeseed, and sunflower from a contaminated riparian soil.

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The objective of this study was to quantify the phytoextraction of the potentially toxic elements Al, As, Cd, Co, Cr, Cu, Mo, Ni, Pb, Se, V, and Zn by Indian mustard, rapeseed, and sunflower from a contaminated riparian soil. To achieve this goal, a greenhouse pot experiment was established using a

Factor affecting the endogenous β-glucuronidase activity in rapeseed haploid cells: how to avoid interference with the Gus transgene in transformation studies.

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The gus gene is one of the most frequently used reporter genes in transgenic plants. However, this gene can only be used if the selected plant species does not show endogenous GUS activity. Rapeseed (Brassica napus) microspores and microspore-derived embryos (MDEs) were found to exhibit high

The transesterification of rapeseed and waste sunflower oils: Mass-transfer and kinetics in a laboratory batch reactor and in an industrial-scale reactor/separator setup.

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We have investigated the transesterification of rapeseed (RO) and waste sunflower (SO) oils with methanol in the presence of potassium hydroxide as a catalyst. The transesterification of tri-acylglycerols was first conducted in a batch reactor. The effect of the temperature on the reaction rates was

Arginine-lysine relationship in rapeseed meal.

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A series of experiments was conducted using White Leghorn male chicks to study the arginine-lysine relationship in rapeseed meal (RSM). Semi-purified diets containing 15% protein either from RSM or soybean meal (SBM) were fed. Arginine supplementation completely reversed the growth depression caused

Influence of various iodine supplementation levels and two different iodine species on the iodine content of the milk of cows fed rapeseed meal or distillers dried grains with solubles as the protein source.

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Supplementation of animal feed with iodine influences the iodine content of milk and therefore, in addition to salt iodination, provides another possibility for improving the human iodine supply. On the other hand, excessive iodine intake by humans through drinking milk must be avoided. Furthermore,

Genome-wide identification and analysis of high-affinity nitrate transporter 2 (NRT2) family genes in rapeseed (Brassica napus L.) and their responses to various stresses

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Background: High-affinity nitrate transporter 2 (NRT2) genes have been implicated in nitrate absorption and remobilization under nitrogen (N) starvation stress in many plant species, yet little is known about this gene family respond to

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