YLM Heavy Industry Ciencia y Tecnología duranteel proceso de desarrollo de los últimos 30 años, se fuerma una cultura empresarial y rica en contenido único.
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Charlar en LíneaSe trata de una moderna empresa con la investigación, fabricación y ventas juntos. La matriz se encuentra enla zona HI-TECH Industry Development de Zhengzhou y cubiertas 80.000 m ².
YLM Heavy Industry
Gracias por su interés en YLM Heavy Industry usted.
Charlar en Línea
Gracias por su interés en YLM Heavy Industry usted.
Charlar en Línea
Gracias por su interés en YLM Heavy Industry usted.
Charlar en Línea
Gracias por su interés en YLM Heavy Industry. Si usted quiere saber más informaciones sobre las trituradoras y molinos de industria, contáctenos ahora para saber qué podemos hacer para su próximo proyecto.
Gracias por su interés en YLM Heavy Industry. Si usted quiere saber más informaciones sobre las trituradoras y molinos de industria, contáctenos ahora para saber qué podemos hacer para su próximo proyecto.
Address:No.169, Science (Kexue) Avenue, National HI-TECH Industry Development Zone, Zhengzhou, China
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This is particularly so with manganese, zinc and boron but less so with copper and molybdenum. In this connexion it may possibly be significant that the first three trace elements are generally present in plants in a significantly higher concentration
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Deciphering trace element transport and tolerance allows the breeding of crops that are more nutrient rich and more tolerant of extreme soil conditions. Currently,
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Excluder plants are plants that limit the transport of pollutants to external parts and keep the concentration of them in shoots stable over a wide range of metals in the soil. ...
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RANGE OF ELEMENT CONCENTRATIONS IN PLANT TOPS (MICROGRAMS PER GRAM) sufficientt toxict in 24 species+ B 20-100 > 200 - Cu 5-20 > 20 4-11 Fe 50-250 -
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The data indicates that the concentration of Pb is 12 to 37 mg/kg-1, Zn 61 to 615 mg/kg-1, Ni 23 to 64 mg/kg-1, Cr 29 to 69 mg/kg-1 and Co 23 to 49 mg/kg-1 in the studied soil
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Trace Elements in soil and Plants: There are many types of trace elements which are required in a minute amount to plants. some of the following are given below: Iron (Fe) Copper (Cu) Zinc (Zn)
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The content of trace elements in plants can vary widely, depending upon the composition of the soil in which they grow, other environmental factors, and the
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The concentrations of Co, Mo and Zn in edible portions of corn, mint and vegetables (eggplant, pepper and tomato) were 0.03-0.66, 0.1-3.2 and 8-148 mg kg⁻¹, respectively.
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The solution level necessary for these concentrations was 8 /Ltg Al/ml. Plant concentrations which caused severe toxicity were 70 //.g Al/g plant with 81 /xg Al/ml solution. Most Al
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The order of the concentrations of trace elements at depths of 0–5 cm, 0–20 cm and 20–80 cm is as follows: Fe > Mn > Zn > Li > Cr > Pb > Ni > Cu > As > Co > Mo > Cd > Se and the result was consistent with that reported in a
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In this connexion it may possibly be significant that the first three trace elements are generally present in plants in a significantly higher concentration than the other two (cf. Table 18, p. 129). A point worthy of note is that the effects of boron deficiency are generally of quite a different kind from those of the other trace elements.
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The chemistry of trace element uptake from food sources in both cases is based on the thermodynamics of adsorption on charged solid surfaces embedded in a solution phase of charged ions and metal-binding ligands together with redox systems in the case of iron and some other elements.
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This study investigated contamination status of eight trace elements (As, Cd, Cr, Hg, Pb, Cu, Zn and Ni) in farmland soils and crops at 535 sites across the Xinjiang Uygur Autonomous Region ...
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Baseline levels of 43 elements, including major, trace, and rare earth elements (REEs) in several native plant species growing in boreal and alpine areas, are presented. Focus is placed on species metal levels at different soil conditions, temporal variations in plant tissue metal concentrations, and interspecies variation in metal
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The Fe concentration varied in the range of 394:7 ± 0:3 μg/g in bark, 1298:3 ± 0:54 μg/g in leaves, and 1208:9 ± 0:7 μg/g in roots. The trace transition element Mn was highest in leaves (42:7...
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From the data in Table 2 it can be seen that in natural samples (from China) the content of elements such as Na, Mg, Cl, K, Ca, and Fe is higher than in plants grown in the Botanical Garden (Russia). However, the content of magnesium and zinc is higher in the Russian samples, 2–3 times higher than in the Chinese ones.
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Result depicted the range of metals in plant samples to be 4.03 to 7.82 for Zn, 2.38 to 3.06 for Co, 1.7 to 2.91 for Cd and 66.62 to 81.66 mg/kg for Fe. In wheat grains, the heavy metal...
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Trace elements include metals, such as lead and iron; metalloids, such as arsenic; and radionclides (radioactive elements), such as radium and radon. Trace elements in our Nation's streams, rivers, and groundwater have
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Total concentration of trace elements in soils and plants were calculated on the basis of dry weight. The soil-to-plant transfer factor ( TF ) was calculated as TF = C plants / C soil , where C plants and C soil represent the trace element concentration in the edible parts of vegetables and soils, respectively [ 12 ].
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The enrichment factor revealed minimal to very high enrichment of essential and toxic elements in the plant parts while the contamination factor showed low to very high contamination. Considering the health risk of toxic elements from plant samples, As and Pb caused non-cancer and cancer risk on human health.
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The concentration of 15 major andtrace elements in plant samples were determined by promptGamma-Ray Neutron Activation Analysis (PGNAA). Resultsindicated that plant part as well as location have asignificant effect on elements content.
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The blue dots on the graph indicate the concentration of nitrate obtained by ion chromatography used as the reference method. From Fig. 7A and B it can be seen that the concentration levels obtained using the symmetrical reference correlate better with the measured levels by ion chromatography. The fluctuation of the signal is also
Bavarder sur InternetIn this connexion it may possibly be significant that the first three trace elements are generally present in plants in a significantly higher concentration than the other two (cf. Table 18, p. 129). A point worthy of note is that the effects of boron deficiency are generally of quite a different kind from those of the other trace elements.
Bavarder sur InternetThis study investigated contamination status of eight trace elements (As, Cd, Cr, Hg, Pb, Cu, Zn and Ni) in farmland soils and crops at 535 sites across the Xinjiang Uygur Autonomous Region ...
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By the nature of their low abundance in natural uncontaminated earth materials or plants, they are known as trace elements, minor elements or micro-nutrients. Boron, copper, iron, manganese, molybdenum, silicon, vanadium and zinc are required by plants; copper, cobalt, iodine, iron, manganese, molybdenum, selenium and zinc by animals.
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Trace element contents in fruit vegetables and soil were measured. The results indicated that the total concentration of trace elements in some of the soil samples exceeded the Grade II national standard in China. Transfer factor (TF) of Cd was the highest (8.360), followed by Zn, Cu, As, and Pb.
Bavarder sur InternetBaseline levels of 43 elements, including major, trace, and rare earth elements (REEs) in several native plant species growing in boreal and alpine areas, are presented. Focus is placed on species metal levels at different soil conditions, temporal variations in plant tissue metal concentrations, and interspecies variation in metal
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elements. Trace elements play a major role in the therapeutic action of medicinal plants; the elevated concentrations of which sometimes may result in toxicity of the medicine [2, 3]. The trace elements, which can be lethal to human beings even at low concentrations, are toxic elements. The concentration of trace elements in plants depends
Bavarder sur InternetFrom the data in Table 2 it can be seen that in natural samples (from China) the content of elements such as Na, Mg, Cl, K, Ca, and Fe is higher than in plants grown in the Botanical Garden (Russia). However, the content of magnesium and zinc is higher in the Russian samples, 2–3 times higher than in the Chinese ones.
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The translocation factor (TF) revealed that studied elements are more accumulated in the leaves than tubers. The enrichment factor revealed minimal to very high enrichment of essential and toxic elements in the plant parts while the contamination factor showed low to very high contamination.
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These micronutrients, or trace elements, are present in very small quantities. The seven main micronutrients include boron, chlorine, manganese, iron, zinc, copper, and molybdenum. Boron (B) is believed to be involved in carbohydrate transport in plants; it also assists in metabolic regulation. Boron deficiency will often result in bud dieback.
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The major (Ca, Na, K, Al, Fe, Mg, Mn) and trace (Sb, Sr, Ba, Be, Cd, Co, Ni, Cr, etc.) elements were determined via atomic absorption using a Solaar M6 instrument equipped with a Zeeman and deuterium background corrector
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Analytical data must be obtained for as many as 20 different elements and their differential distribution among various plant parts, including roots, must be known to gain even a partial understanding of the interactions. ... The nature of interactions varies considerably with concentration levels, soil pH, soil texture, level of soluble Ca in ...
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The maximum concentrations of trace elements per kg soil were 6.37 mg Cu, 0.53 10 3 mg Mn, 1.05 10 3 mg Fe, and 36.07 mg Zn. The orders of their concentrations in soils and plant parts were found to be Fe>Mn>Zn>Cu. The maximum metal concentrations, except for Fe concentra-tion, were observed in the leaves and seeds of plant parts.
Bavarder sur InternetBackground Sweet fennel (Foeniculum vulgare Mill.) is one of the precious spices. Almost all parts of fennel plant are edible. The herb is used as carminative, digestive, diuretic, cosmetic and medicine. Methods A 0.5 g of the oven dried fennel fruit and soil samples were digested by wet-digestion method. The levels of selected elements
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For the edible parts of the African spider plants (stems and leaves), the Fe concentration ranged from 2200 ± 700 to 3900 ± 1700 mg/kg dry weight (Table 3). The elemental content of plants may vary from one place to another depending on various factors such as the variation of the geological structures and silting processes. [ 4 ]
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