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Articles de revues sur le sujet « High iron content »

Auteur : Grafiati

Publié le 20 décembre 2023

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1

GOTO, Fumiyuki, and Toshihiro YOSHIHARA. "Molecular breeding of high iron content crops." Plant Biotechnology 17, Supplement (2000): 2. http://dx.doi.org/10.5511/plantbiotechnology.17.supplement_2.

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Khorunzha, T., V. Pasichnyi, A. Marynin, R. Svyatnenko, and O. Moroz. "Pasteurized sausages with high heme iron content." Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies 21, no. 91 (2019): 43–47. http://dx.doi.org/10.32718/nvlvet-f9108.

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Current issue of today is the process of increasing the range of sausages and extending their storage time, especially for a boiled group of sausages. Therefore, the subject of research is pasteurized sausage, with an increased content of heme iron. The aim of the work was to create a complete product with high organoleptic characteristics, balanced according to biological and nutritional value and to select optimal thermal regimes to increase the shelf life of the product and to preserve the nutritional properties of the product, since cooked sausages have a limited shelf life, and due to pro

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3

Li, Guo Ping, Li Bo Guo, Li Hui Sun, Feng Hua Luo, Jiao Du, and Zeng Lin Liu. "Analysis of the Influence Factors on High Compressibility Water Atomized Iron Powder." Materials Science Forum 859 (May 2016): 118–24. http://dx.doi.org/10.4028/www.scientific.net/msf.859.118.

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In this paper, the influence factors on high compressibility water atomized iron powder LAP100.29 were studied such as the processing parameters, the proportion of coarse particles, powder oxygen content and impurity. The results showed that, by increasing the purity of molten steel and improving atomization temperature, the iron content of water atomized iron powder particles reached more than 99.67 %, the oxygen content was less than 0.08 %, acid insoluble was less than 0.08 %, green density reached 7.21~7.22 g/cm3. The contents of +80 and -80～+100 mesh powder were 1.6 % and 7.5 %, respectiv

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MURATA, Kazuhisa, Hirobumi USHIJIMA, and Kunio UCHIDA. "Simple Preparation of Carbon-coated Iron Particles Having High Iron Content." Journal of The Japan Petroleum Institute 41, no. 2 (1998): 168–72. http://dx.doi.org/10.1627/jpi1958.41.168.

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Loginova, Irina V., and Aleksei V. Kyrchikov. "Complete Processing of the High-Iron Content Red Mud." Materials Science Forum 946 (February 2019): 569–74. http://dx.doi.org/10.4028/www.scientific.net/msf.946.569.

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When bauxites from the Middle Timan and Severouralsk deposits are processed into alumina by the low-temperature sintered process the high-iron content red mud can be obtained. The red mud contain up to 58 % of iron and are a potential raw material for ferrous metallurgy. Rare earth elements (REEs) such as Sc, Y and La are converted from bauxites to red mud in the form of hydroxides during processing and are easily leached by weak acid solutions. In this work, the red mud is treated with a solution of sulfuric acid (pH = 2.5–5), the REEs pass into solution, and then the solution is neutralized

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Florea, C., C. Bejinariu, I. Carcea, N. Cimpoesu, D. L. Chicet, and C. Savin. "Obtaining of High Cr Content Cast Iron Materials." IOP Conference Series: Materials Science and Engineering 209 (June 2017): 012046. http://dx.doi.org/10.1088/1757-899x/209/1/012046.

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Mastral, A. M., C. Mayoral, M. T. Izquierdo, and C. Pardos. "Iron catalyzed hydrogenation of high sulphur content coals." Fuel Processing Technology 36, no. 1-3 (1993): 177–84. http://dx.doi.org/10.1016/0378-3820(93)90025-y.

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Darvishi, Alireza, Ali Maleki, Mehdi Mazar Atabaki, and Mohammad Zargami. "The mutual effect of iron and manganese on microstructure and mechanical properties of aluminium –silicon alloy." Metalurgija-Journal of Metallurgy 16, no. 1 (2010): 11–24. http://dx.doi.org/10.30544/383.

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The effect of iron and manganese concentration on the morphology of complex intermetallics and their influence on the mechanical properties and microstructure has been studied in an Al-16.67 wt. % Si alloy with three content of iron (0.4, 1.2, 1.8 wt.%), and two different content of manganese, i.e. 0.6 and 0.9 wt.%. The intermetallic compounds are formed at high iron contents or at high concentrations of manganese with low iron. The microstructural investigation by Clemex software showed that the biggest intermetallic size reached the surface area of 12750 μm2, when the amount of iron was incr

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GOTO, F., and T. YOSHIHARA. "Improvement of Micronutrient Contents by Genetic Engineering. Development of High Iron Content Crops." Plant Biotechnology 18, no. 1 (2001): 7–15. http://dx.doi.org/10.5511/plantbiotechnology.18.7.

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Pereira, Gustavo Eduardo, Letícia Sequinatto, Jaime Antonio de Almeida, Alexandre Ten Caten, and Josie Moraes Mota. "VIS-NIR spectral reflectance for discretization of soils with high sand content." Semina: Ciências Agrárias 40, no. 1 (2019): 99. http://dx.doi.org/10.5433/1679-0359.2019v40n1p99.

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The aim of this study is to evaluate the spatial distribution and relationships between the physicochemical attributes and radiometry of soils with high sand contents. One hundred surface horizon samples were collected for physicochemical and spectral analyses of the soil. The samples were selected spatially by the conditioned Latin hypercube method. The physicochemical analyses consisted of granulometry, organic carbon content, and iron oxides content, extracted using sodium dithionite-citrate-bicarbonate (DCB). The spectral response of the soils was analyzed in the 400 to 1000 nm range. The

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Held, Melissa R., Richard D. Bungiro, Lisa M. Harrison, Iqbal Hamza, and Michael Cappello. "Dietary Iron Content Mediates Hookworm Pathogenesis In Vivo." Infection and Immunity 74, no. 1 (2006): 289–95. http://dx.doi.org/10.1128/iai.74.1.289-295.2006.

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ABSTRACT Hookworm infection is associated with growth delay and iron deficiency anemia in developing countries. A series of experiments were designed in order to test the hypothesis that host dietary iron restriction mediates susceptibility to hookworm infection using the hamster model of Ancylostoma ceylanicum. Animals were maintained on diets containing either 10 ppm iron (iron restricted) or 200 ppm iron (standard/high iron), followed by infection with A. ceylanicum third-stage larvae. Infected animals fed the standard diet exhibited statistically significant growth delay and reduced blood

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C. Dias-Barbosa, Cristina Z. de Morais, Diego S. V. de Oliveira, Kaesel J. D. de Oliveira, Regilda S. dos Reis Moreira Araújo, and Maurisrael de Moura Rocha. "Selection of Cowpea Elite Lines for Iron and Zinc Biofortification." Current Nutrition & Food Science 17, no. 1 (2020): 48–58. http://dx.doi.org/10.2174/1573401316999200503031253.

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Background: Cowpea is a very popular crop in Brazil, rich in nutrients that can be used as food to feed the population, avoiding deficiencies caused by the lack of minerals such as iron and zinc. Objective: To select elite cowpea lines for biofortification of iron and zinc and determine the physical and chemical characteristics of the lines. We analyzed: 33 cowpea genotypes, being 31 elite genotypes and two biofortified cultivars (control). Method: The 10 best lines with iron and zinc contents were selected and, together with the controls, were analyzed for chemical composition (moisture, ash,

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Schonewille, J. Th, S. Yu, and A. C. Beynen. "High iron intake depresses hepatic copper content in goats." Veterinary Quarterly 17, no. 1 (1995): 14–17. http://dx.doi.org/10.1080/01652176.1995.9694523.

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Garzón, Benjamín, Rouslan Sitnikov, Lars Bäckman, and Grégoria Kalpouzos. "Automated segmentation of midbrain structures with high iron content." NeuroImage 170 (April 2018): 199–209. http://dx.doi.org/10.1016/j.neuroimage.2017.06.016.

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Romero-Perez, Maximina, Jesús Ma Rincón, Carlos J. R. González Oliver, Claudio D’Ovidio, and Daniel Esparza. "Magnetic properties of glasses with high iron oxide content." Materials Research Bulletin 36, no. 7-8 (2001): 1513–20. http://dx.doi.org/10.1016/s0025-5408(01)00630-4.

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Liu, Feng-juan, Tao Zhang, Shu-jie Pang, and Ke-fu Yao. "Ductile Fe-based amorphous alloys with high iron content." International Journal of Minerals, Metallurgy, and Materials 17, no. 2 (2010): 199–203. http://dx.doi.org/10.1007/s12613-010-0213-z.

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Silva, Camila Andrade, Ângela de Fátima Barbosa Abreu, Magno Antonio Patto Ramalho, and Angelita Duarte Corrêa. "Interaction genotype by season and its influence on the identification of beans with high content of zinc and iron." Bragantia 71, no. 3 (2012): 336–41. http://dx.doi.org/10.1590/s0006-87052012005000037.

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The mineral contents in common bean seeds are influenced, in addition to genetic variation, by environmental crop conditions, especially by the soil type and chemical composition and by the genotype x environment interaction. This study was carried out to verify if the zinc and iron contents are affected by the crop growing period. Ten lines with high iron and zinc contents and ten with low contents were assessed in three seasons: "wet season" of 2009/2010 (sowing in November); "dry season" of 2010 (sowing in February) and "winter season" of 2010 (sowing in July), in Lavras, Minas Gerais State

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Legemza, Jaroslav, Róbert Findorák, Dana Baricová, et al. "Rudomain Iron Ore Treatment by High-Temperature Reduction." Applied Sciences 13, no. 19 (2023): 10698. http://dx.doi.org/10.3390/app131910698.

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The purpose of this study was to conduct experiments comprising the high-temperature reduction treatment of commercially produced iron ore fines and lumps aimed at increasing the use value of the ore. The analysed ore was Ukrainian iron ore sold under the Rudomain commercial name, mined from a bed located in the southern part of the Saksagan region (Kryvyi Rih, Ukraine). The study describes in detail the basic physical, chemical, and physico-chemical properties of the analysed ore, and it comprised a thermodynamic analysis, which is typically used as the basis for defining reduction conditions

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Liu, F. J., K. F. Yao, and H. Y. Ding. "Fe-based glassy alloys with high iron content and high saturation magnetization." Intermetallics 19, no. 11 (2011): 1674–77. http://dx.doi.org/10.1016/j.intermet.2011.07.011.

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Li, Guo Hua, Shu Jiang Chen, and Lin Tian. "Study on MgO-MgO•Al₂O₃ Bricks Used Burned Zone of Cement Rotary Kiln." Advanced Materials Research 291-294 (July 2011): 3255–58. http://dx.doi.org/10.4028/www.scientific.net/amr.291-294.3255.

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The effects of iron scales and high iron magnesite as well as the content on microstructure and properties of MgO-MgO·Al2O3 bricks used burned zone of large cement rotary kilns have been studied. It focuses on testing coating adherence in this paper. The results show that apparent porosity of adding iron scales sample is higher than the sample by adding high iron magnesite, which is increased with increasing of iron scales content; Compression strength is decreased with increasing of iron scales content, The high iron magnesia cause the irregular change of the compression strength, compression

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Middleton, Maureen, Manuel Olivares, Alejandra Espinoza, Miguel Arredondo, Fernando Pizarro, and Carolina Valenzuela. "Exploratory Study: Excessive Iron Supplementation Reduces Zinc Content in Pork without Affecting Iron and Copper." Animals 11, no. 3 (2021): 776. http://dx.doi.org/10.3390/ani11030776.

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The aim of this work was to determine in an exploratory manner the effect of excessive iron supplementation on iron, zinc, and copper contents in pork and pork offal. Pigs averaging 50 days in age and 15 ± 1.3 kg body weight were allocated to a control group (500 ppm dietary Fe) and a supplemental group (3000 ppm dietary Fe). After an iron supplementation period of 60 days, blood samples were analyzed to determine iron biomarkers, serum copper, and zinc contents. Animals were slaughtered to assess total iron, non-heme iron, heme iron, zinc, and copper contents in samples of nine meat cuts and

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Mežibrický, Roland, Tamás Csanádi, Gerlinde Habler, Mária Fröhlichová, Ján Dusza, and Rainer Abart. "Synthesis and Mechanical Testing of Calcium Aluminosilicoferrite Crystals with High Alumina Content." Metals 9, no. 8 (2019): 906. http://dx.doi.org/10.3390/met9080906.

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Due to the gradual shift to less rich iron ores, the alumina content in the raw materials used for iron-making is progressively increasing, affecting the mineralogy and the properties of iron ore sinters. In this context, the effect of Al content on the mechanical properties of calcium aluminosilicoferrites Ca2(Ca,Mg,Fe)6(Fe,Si,Al)6O20 (SFCA), which is the most important bonding phase in iron ore sinters, is of particular interest. In this study, high-alumina calcium aluminosilicoferrites were synthesized and their mechanical properties were determined by nanoindentation using a cube-corner in

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Corhay, JL, G. Weber, T. Bury, S. Mariz, I. Roelandts, and MF Radermecker. "Iron content in human alveolar macrophages." European Respiratory Journal 5, no. 7 (1992): 804–9. http://dx.doi.org/10.1183/09031936.93.05070804.

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Intracellular iron can be estimated semi-quantitatively by histochemical determination using the ferrocyanide reagent's score. Particle-induced X-ray emission (PIXE) allows accurate determination of various elements including iron in cells and biological fluids. Both techniques have been used to measure iron in alveolar macrophages gathered by bronchoalveolar lavage. The purpose of this study was to investigate the clinical usefulness of the PIXE technique in occupational respiratory medicine and in various pulmonary diseases. Using the PIXE method, we measured the iron content of alveolar mac

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Lv, Meng Yang, Shu Ming Wen, Yong Jun Xian, Jian Liu, and Yi Jie Wang. "Efficiently Produce Iron Concentrate from High-Purity Pyrite." Advanced Materials Research 622-623 (December 2012): 500–503. http://dx.doi.org/10.4028/www.scientific.net/amr.622-623.500.

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The study attempts to produce iron concentrate from a high-purity pyrite concentrate using oxidizing roasting at industry scale. The effect of key parameters, i.e., roasting temperature, excess air coefficient and roasting intensity on the Fe and S content in the pyrite cinder was fully investigated. The results indicate that the roasting temperature plays a key role in decrease the S content in the pyrite cinder; an increase in the roasting temperature from 800°C to 950°C decreased the S content in the pyrite cinder remarkably from 0.43% to 0.18%. The optimum conditions for produce a high qua

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Yang, Xiaohong, and Fengying Wang. "Effects of Iron on the Occurrence Form and Release of Phosphorus in The Yellow River Sediments." Academic Journal of Science and Technology 4, no. 2 (2023): 38–40. http://dx.doi.org/10.54097/ajst.v4i2.3894.

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There is a close relationship between Fe and P in the sediments of the Yellow River, and iron has a great influence on the occurrence form of phosphorus, except that the content of exchangeable iron increases, and the content of Pex and PAl decreases, showing a negative correlation; Water soluble iron and residual iron have a significant positive relationship with ΣP, water soluble iron and Porg, residual iron and Paut, PDe, and the correlation coefficient is high, indicating that the contents of Pex, PAl, Porg, Paut, PDe, and ΣP in the Yellow River sediments are controlled by iron forms.

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Kawigraha, Adji, Johny Wahyuadi Soedarsono, Sri Harjanto, and Pramusanto. "Thermogravimetric Analysis of the Reduction of Iron Ore with Hydroxyl Content." Advanced Materials Research 774-776 (September 2013): 682–86. http://dx.doi.org/10.4028/www.scientific.net/amr.774-776.682.

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Iron ore with high hydroxyl content such as goethit is widely spread in Indonesia. Such iron ore is not used as feed in ironmaking industry. However due to limitation of primary iron ore reserve such material is an option to substitute the conventional iron ore. Unfortunately the characteristic of iron ore with high hydroxyl content is totally different to conventional iron ore. Such iron ore contains hydroxyl part that can be released at high temperature. This research uses composite pellet which is mixture of iron ore and coal. The iron ore contains goethite which is one of iron phase. The c

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Liang, Xiaoqi, Yingmei Li, Anqi Yao, et al. "Overexpression of MxbHLH18 Increased Iron and High Salinity Stress Tolerance in Arabidopsis thaliana." International Journal of Molecular Sciences 23, no. 14 (2022): 8007. http://dx.doi.org/10.3390/ijms23148007.

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In the life cycle of apple, it will suffer a variety of abiotic stresses, such as iron stress and salt stress. bHLH transcription factors (TFs) play an indispensable role in the response of plants to stress. In this study, a new bHLH gene named MxbHLH18 was separated from Malus xiaojinensis. According to the results of subcellular localization, MxbHLH18 was localized in the nucleus. Salt stress and iron stress affected the expression of MxbHLH18 in Malus xiaojinensis seedlings to a large extent. Due to the introduction of MxbHLH18, the resistance of Arabidopsis thaliana to salt, high iron and

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Liu, Liwei, Guofeng Li, Yanfeng Li, and Libing Zhao. "Dephosphorization kinetics of high-P-containing reduced iron produced from oolitic hematite ore." High Temperature Materials and Processes 41, no. 1 (2022): 48–56. http://dx.doi.org/10.1515/htmp-2022-0017.

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Abstract To comprehensively utilize Fe and P in oolitic hematite ore, an innovative method was proposed to enhance P enrichment in the reduced iron during the reduction process. The reduced iron was then converted to low-P-containing molten iron and high-P-containing slag in the presence of CaO–SiO2–FeO–Al2O3 slag. In this study, the P content of the final iron after 0–1,800 s dephosphorization was investigated at different slag composition conditions, and the dephosphorization kinetics of the reduced iron was analyzed. The results showed that the P content of the final iron sample decreased r

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Kurniawati, Adelya, Titis Sari Kusuma, Wahyu Winariyanti, and Dedy Iskandar Putra. "Contribution of School Canteen's Snacks to The Iron Fulfillment in Malang High Schools." Indonesian Journal of Human Nutrition 9, no. 2 (2022): 145. http://dx.doi.org/10.21776/ub.ijhn.2022.009.02.4.

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Inadequate dietary iron, impaired iron absorption, bleeding, or loss of body iron in the urine may cause anemia. The prevalence of anemia due to iron (Fe) deficiency in Indonesia reaches 22.7% in females and 12.4% in males. Indonesian students spent 7-8 hours/day, mainly the iron daily intake influenced by school canteen snacks. This study aimed to determine the contribution of Fe content in canteen snacks in high schools in Malang. This research was an analytic observational study using a cross-sectional design with the AAS (Atomic Absorption Spectrometry) method as a quantitative iron analys

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Isani, Gloria, Enea Ferlizza, Martina Bertocchi, et al. "Iron Content, Iron Speciation and Phycocyanin in Commercial Samples of Arthrospira spp." International Journal of Molecular Sciences 23, no. 22 (2022): 13949. http://dx.doi.org/10.3390/ijms232213949.

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Cyanobacteria are characterized by high iron content. In this research, we collected ten commercial samples of Arthrospira spp. sold as food supplement to determine iron content and assess whether iron speciation showed variability among samples and changed respect to A. platensis grown in controlled conditions. Particular attention was also paid to phycocyanin, as an iron-binding protein. In six of the ten samples, 14 essential and non-essential trace elements were analysed using ICP-MS. Iron content measured in samples using atomic absorption spectrometry (AAS) varied from 353 (sample S5) to

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Hwang, Woon-Ha, Jung-Sung Back, Sung-Hyun An, et al. "The Effective Method to Screening High Iron Content Brown Rice." Journal of the Korean Society of International Agricultue 28, no. 4 (2016): 473–78. http://dx.doi.org/10.12719/ksia.2016.28.4.473.

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Agamirova, Alexandra S., Konstantin V. Goncharov, and Guseyn B. Sadykhov. "The complex processing of titanomagnetites with a high content of titanium dioxide." Transactions of the Kоla Science Centre of RAS. Series: Engineering Sciences 13, no. 1/2022 (2022): 13–16. http://dx.doi.org/10.37614/2949-1215.2022.13.1.001.

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Titanomagnetites are a complex raw material with a high content of valuable components: iron (35–65 %), vanadium (0.5–1.5 %) and titanium (2–14 %). Today, titanium-magnetite concentrates are processed in two ways: blast furnace (Russia, China) and using electric smelting (South Africa). The blast-furnace method is applicable only for low-titanium titanomagnetites. In the case of using titanomagnetite concentrates with a titanium dioxide content of more than 4 %, the method of electric smelting with preliminary reduction is applicable. Both technologies aim to recover the two components (iron a

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Isani, Gloria, Alberto Niccolai, Giulia Andreani, et al. "Iron Speciation and Iron Binding Proteins in Arthrospira platensis Grown in Media Containing Different Iron Concentrations." International Journal of Molecular Sciences 23, no. 11 (2022): 6283. http://dx.doi.org/10.3390/ijms23116283.

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Cyanobacteria are characterized by high iron content. This study investigated the effects of varying iron concentrations (1, 5, and 10 mg L−1) in the culture media on the biochemical composition and the iron bioaccumulation and speciation in Arthrospira platensis F&M-C256. Iron content measured in biomasses varied from 0.35 to 2.34 mg g−1 dry weight depending on the iron concentration in the culture media. These biomasses can be considered of interest for the production of spirulina-based supplements with low and high iron content. Iron speciation was studied using size exclusion chromatog

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Ma, You Ping, Xiu Lan Li, and Lei Yang. "Effects of Carbon Concentration Variation on Primary Austenite Stability of High Chromium Cast Iron." Advanced Materials Research 154-155 (October 2010): 1684–88. http://dx.doi.org/10.4028/www.scientific.net/amr.154-155.1684.

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The effect of carbon content on primary austenite stability of high chromium white cast iron(15.0wt.%) was investigated by means of optical microscopy(OM) and energy spectrum spectrometry(EDS).The results indicate that with increasing the concentration of carbon,the carbon of solid solution in the primary austenite increased, while the chromium was on the contrary, The increase of carbon content stabilized primary austenite under the condition that no secondary carbides precipitated, however, once secondary carbides precipitated, the stability of primary austenite deteriorated with the increas

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Harris, Georgina, Taina Palosaari, Zuzana Magdolenova, et al. "Iron oxide nanoparticle toxicity testing using high-throughput analysis and high-content imaging." Nanotoxicology 9, sup1 (2013): 87–94. http://dx.doi.org/10.3109/17435390.2013.816797.

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Sorokina, N. A., and V. I. Gal'tsova. "High-temperature ductility of nickel alloys type KhN55MBYu with a high iron content." Metal Science and Heat Treatment 36, no. 9 (1994): 476–81. http://dx.doi.org/10.1007/bf01395906.

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Ardelean, Erika, Ana Socalici, Oana Lupu, Diana Bistrian, Cristian Dobrescu, and Nicolae Constantin. "Recovery of Waste with a High Iron Content in the Context of the Circular Economy." Materials 15, no. 14 (2022): 4995. http://dx.doi.org/10.3390/ma15144995.

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In order to apply the concepts that allow the transition from a linear to a circular economy, waste generators and/or processors must identify those variants that generate products that can be used as secondary raw materials, thus also respecting the actions governing sustainable development. This paper presents such a variant, the briquetting of waste with high iron content, waste generated on current flows in steel enterprises or deposited in industrial sites. The obtained briquettes are analyzed for chemical and mechanical characteristics so that can be used as secondary materials in the st

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Perez-Rodriguez, JL, C. Maqueda, P. Rodriguezrubio, and MCJ Deharo. "Occurrence of talc in soils with high iron content from the south-west of Spain." Soil Research 34, no. 5 (1996): 635. http://dx.doi.org/10.1071/sr9960635.

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The mineralogy of the clay fractions of 2 soil profiles classified as an Alfic Dystric Eutrochrept (Soil I) and a Xerochreptic Haploxeralf (Soil II) has been determined. A notable feature of these soils is the presence of talc and the high iron content as goethite, hematite, lepidocrocite, and maghemite. Talc was the most abundant non-iron mineral of the clay fraction of Soil II. In Soil I, talc occurs as a residual phase from the parent material with its persistence in the profile aided by coatings of iron oxides, which inhibit further weathering. In these soils there is a high proportion of

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Guo, Yan Hua, Hui Xin Dai, and Jun Long Yang. "Beneficiation Test Research on High Grade Hematite-Limonite Ore." Applied Mechanics and Materials 295-298 (February 2013): 3029–33. http://dx.doi.org/10.4028/www.scientific.net/amm.295-298.3029.

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The run of mine ore grade of Gan Shang Yan is 47.83%, iron ore grade is higher, but harmful element sulfur and impurity silica content is relatively high. This experiment using a simple process low intensity magnetic separation-high gradient magnetic separation, for the ultimate index for comprehensive grade of iron concentrate is 58.41%, at a total recovery of 80.85%, and obtain good experiment index, the harmful elements and impurity content can meet the standard.

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Foster, Chris M., Kristen M. Kennedy, Ana M. Daugherty та Karen M. Rodrigue. "Contribution of iron and Aβ to age differences in entorhinal and hippocampal subfield volume". Neurology 95, № 18 (2020): e2586-e2594. http://dx.doi.org/10.1212/wnl.0000000000010868.

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ObjectiveTo test the hypothesis that the combination of elevated global β-AMYLOID (Aβ) burden and greater striatal iron content would be associated with smaller entorhinal cortex (ERC) volume, but not hippocampal subfield volumes, we measured volume and iron content using high-resolution MRI and Aβ using PET imaging in a cross-sectional sample of 70 cognitively normal older adults.MethodsParticipants were scanned with florbetapir 18F PET to obtain Aβ standardized uptake value ratios. Susceptibility-weighted MRI was collected and processed to yield R2* images, and striatal regions of interest (

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Kropivnyi, Volodymyr, Mykola Bosyi, Olexandr Kuzyk, and Alena Kropivna. "Specific Distribution of Thermal Effects of Graphite Forming Reactions in High-strength Cast Iron." Central Ukrainian Scientific Bulletin. Technical Sciences, no. 3(34) (October 2020): 48–53. http://dx.doi.org/10.32515/2664-262x.2020.3(34).48-53.

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The dependence of thermal effects of reactions in the formation of inclusions of vermicular and globular graphite is substantiated in the article. The calculation of thermal effects according to the heat of formation of reagents in cast iron and their dependence on the temperature factor is given. The distribution of temperatures and carbon content in the eutectic shell is shown, increasing the compact inclusion of graphite due to diffusing carbon from the melt through the austenitic shell.

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Li, Yong Li, Ti Chang Sun, Jue Kou, Cheng Yan Xu, Zhan Hua Liu, and Qian Guo. "Industry Test on Phosphorus Removal and Direct Reduction of High-Phosphorus Oolitic Hematite Ore." Advanced Materials Research 402 (November 2011): 535–41. http://dx.doi.org/10.4028/www.scientific.net/amr.402.535.

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Industry test on phosphorus removal and direct reduction of the “Ningxiang type” high-phosphorus oolitic hematite ore has been carried out in a tunnel kiln on the basis of laboratory experiment. The iron grade and phosphorus content of the initial sample are 42.46% and 0.867%, respectively. The results showed that high-phosphorus oolitic hematite could be exploited on industrial scale, with the new process direct reduction roasting – grinding – magnetic separation, and that the final concentrate with an iron grade 92.56%, iron recovery 82.77% and phosphorus content 0.089% was obtained under th

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Jeong, Gu Beom, Jae Sook Song, and Sun Ig Hong. "Microstructure and Deformability of Cast Zr-Nb-Fe-O Alloy with High Iron and Oxygen Content." Advanced Materials Research 977 (June 2014): 99–103. http://dx.doi.org/10.4028/www.scientific.net/amr.977.99.

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In order to investigate the possible effect of the scrap inclusions in recycling, microstructure and deformability of Zr-Nb based alloys cast with the addition of iron and iron oxide were studied. No visible iron oxide inclusions were observed in the arc-melted cake, suggesting that Zr and Fe2O3reacted completely to dissociate Fe2O3into Fe and O in the Zr. No oxide peaks were observed by XRD analyses. In Zr-Nb alloy melted with iron oxide, the oxygen content reached up to 3150 ppm. Zr-1.2 Nb alloys with high oxygen contents exhibited needle-shaped α phase. and the the thickness of needles decr

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Oinonen, M., G. Haggren, A. Kaskela, M. Lavento, V. Palonen, and P. Tikkanen. "Radiocarbon Dating of Iron: A Northern Contribution." Radiocarbon 51, no. 2 (2009): 873–81. http://dx.doi.org/10.1017/s0033822200056186.

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The iron dating project Aikarauta has been launched in Finland. This paper presents the results of the preliminary investigations. The ability for radiocarbon measurement by accelerator mass spectrometry (AMS) of iron in Finland has been demonstrated by using coal-produced iron as reference material. An elemental analyzer has been harnessed to measure the carbon content of small iron samples. In addition, we have hypothesized that a fingerprint of the limestone usage in the smelting process is the high Ca content of iron and slag. This has been examined by performing an iron smelting experimen

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Tan, Li Rong, Yan Hui Wang, Jian Bing Zang, and Jin Hui Zhang. "Electroplating Nickel-Iron Alloy on the Diamond Surface." Key Engineering Materials 416 (September 2009): 164–67. http://dx.doi.org/10.4028/www.scientific.net/kem.416.164.

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Ni-coated diamond grits are widely used in resin-bonding diamond tools for that nickel coating could not only increase the surface roughness, but also improve retention of the diamond in the bond. However coating nickel on diamond surface is too expensive for the high price of metal nickel. In order to obtain cost-effective coating, barrel-plating method was used to coat nickel-iron alloy on the diamond surface in this paper. Nickel-iron alloy coating with iron content of 13.62~17.25wt% has been obtained and the iron content in the alloy coating can be adjusted by the content of Fe2+ in the el

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Zavyalov, Vladimir, and Nataliya Terekhova. "Meteoritic iron artefacts redux." Archeologické rozhledy 71, no. 2 (2019): 155–67. http://dx.doi.org/10.35686/ar.2019.8.

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The earliest iron artefacts are often presented as products made of meteoritic iron, which is characterised by its high iron content. However, recent studies have shown that high nickel and iron content cannot be taken as a firm criterion for establishing its meteoritic origin. The most effective tool for helping to specify the elemental composition in such cases is a metallographic analysis. It turns out that the material of many artefacts regarded as having been forged from meteoritic iron could in fact be bloomery iron. An analysis of ample yet scattered evidence suggests that the productio

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Muñiz Valdez, Carlos Rodrigo, Daniel García Navarro, Jesús Salvador Galindo Valdés, Félix Alan Montes González, Efrain Almanza Casas, and Nelly Abigail Rodríguez Rosales. "Determination of Corrosion Resistance of High-Silicon Ductile Iron Alloyed with Nb." Metals 13, no. 5 (2023): 917. http://dx.doi.org/10.3390/met13050917.

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In this study, the effects of Nb on the microstructural characteristics, hardness, and corrosion resistance of high-silicon ductile cast iron (HSDI)-3.6 wt.% Si were investigated. Samples from different castings with 0–0.9 wt.% Nb were obtained and compared to a commercial ductile iron. Microstructures showed that the amount of ferrite in the matrix increased with increasing Nb content, from 34% for unalloyed HSDI to 88% for HSDI-0.9 wt.% Nb. The presence of randomly distributed NbC carbides was identified by EDX for all the samples alloyed with Nb, and the hardness of the HSDI increased with

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Zheng, Yanxin, Ying Liu, Feng Zheng, et al. "Effects of iron content on tribological properties of Cu-Fe-based friction material." Industrial Lubrication and Tribology 71, no. 5 (2019): 718–23. http://dx.doi.org/10.1108/ilt-01-2019-0039.

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Purpose The purpose of this study is to investigate the effect of iron content on the friction and wear performances of Cu–Fe-based friction materials under dry sliding friction and wear test condition. Design/methodology/approach Cu–Fe-based friction materials with different iron content were prepared by powder metallurgy route. The tribological properties of Cu–Fe-based friction materials against GCr15 steel balls were studied at different applied loads and sliding speeds. Meanwhile, microstructure and phases of Cu–Fe-based friction materials were investigated. Findings Cu–Fe-based friction

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Shoppert, Andrey A., Denis A. Rogozhnikov, and Y. E. Agapitov. "Obtaining of High Quality Iron Oxide from Nitric Acid Leaching Solution." Solid State Phenomena 299 (January 2020): 1128–33. http://dx.doi.org/10.4028/www.scientific.net/ssp.299.1128.

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Low grade copper concentrate is a promising source for the future recovery of copper and other valuable components by nitric acid leaching, which leads to a formation of iron rich pregnant solution. In this study a method of producing of high-quality iron oxide from the pregnant solution by precipitation of jarosite with subsequent conversion of jarosite into magnetite under alkaline conditions in the presence of ferrous ions was explored. The degree of iron extraction was 87.4%, the copper content in the magnetite was 0.06% under the following optimal conditions of jarosite precipitation: pre

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Gillot, B., and V. Nivoix. "New cation-deficient vanadium–iron spinels with a high vacancy content." Materials Research Bulletin 34, no. 10-11 (1999): 1735–47. http://dx.doi.org/10.1016/s0025-5408(99)00165-8.

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