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Journal articles on the topic 'Medium manganèse'

Author: Grafiati

Published: 8 June 2024

Last updated: 31 July 2025

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1

Новохацкая, А. А., та Г. Я. Акимов. "Роль избыточного марганца в формировании структуры и транспортных свойств манганита (Nd-=SUB=-0.67-=/SUB=-Sr-=SUB=-0.33-=/SUB=-)-=SUB=-1-x-=/SUB=-Mn-=SUB=-1+x-=/SUB=-О-=SUB=-3-=/SUB=- (x=0; 0.2), спеченного при 1273-1473 K". Физика твердого тела 60, № 7 (2018): 1378. http://dx.doi.org/10.21883/ftt.2018.07.46127.009.

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AbstractThe Nd_0.67Sr_0.33MnO_3 manganite is a material promising for application as a cathode for medium-temperature solid oxide fuel elements. A high electrical conductivity of such a cathode is the parameter determining the efficiency of the operation of a fuel element. In this report, the effect of influence of excess manganese on the structure and the conductivity of manganite ceramics with compositions (Nd_0.67Sr_0.33)_1– x Mn_1 + x O_3± Δ ( x = 0, 0.2) sintered at temperatures 1273–1673 K is presented for the first time. The existence of 20% excess manganese in the initial manganite pow

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2

Francisco Sánchez Viesca and Reina Gómez Gómez. "A complete and sustained organic/inorganic reaction mechanism of Baeyer’s test." World Journal of Chemical and Pharmaceutical Sciences 4, no. 2 (2024): 001–5. http://dx.doi.org/10.53346/wjcps.2024.4.2.0023.

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The Baeyer’s test for unsaturation has been used in Qualitative Organic Analysis for a long time. However, if an alkaline reagent is used, compounds having an active hydrogen (carbon acids) also give a positive test with potassium permanganate, detracting the test for unsaturation. The first steps of the reaction sequence have been described but the next stages are missing. These are very important because they involve the formation mode of the observed end product, brown manganese dioxide. In this communication, a complete and sustained reaction mechanism is provided for both reaction mediums

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3

Wang Yanjie, 王艳杰, 赵琳 Zhao Lin, 彭云 Peng Yun та 曹洋 Cao Yang. "中锰汽车钢激光焊接焊缝组织与韧性". Chinese Journal of Lasers 49, № 8 (2022): 0802021. http://dx.doi.org/10.3788/cjl202249.0802021.

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4

De Moor, Emmanuel, Alexandra Glover, Josh Mueller, John G. Speer, and David K. Matlock. "Double Soaking of Medium Manganese Steels." Materials Science Forum 1105 (November 29, 2023): 207–12. http://dx.doi.org/10.4028/p-wh9qva.

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Double soaking (DS) has been proposed as an alternate processing route for medium manganese steels. DS consists of soaking in the intercritical annealing region to stimulate manganese enrichment of austenite by depletion of ferrite followed by secondary soaking at a higher temperature and cooling to room temperature to obtain a martensite/austenite microstructure. DS is different from more traditional medium manganese heat treating which usually involves a single soaking step in the intercritical region to generate a ferrite/austenite microstructure. DS has been shown effective at generating a

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5

Mohapatra, B. K., and B. R. Nayak. "Characteristics of Manganite (?-MnOOH) in Manganese-Rich Gangpur Group of Rocks, Orissa." Journal Geological Society of India 51, no. 4 (1998): 509–16. http://dx.doi.org/10.17491/jgsi/1998/510409.

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Abstract Manganite ?-MnOOH, in the manganese-rich rocks of Precambrian Gangpur Group, Sundargarh district, Orissa, shows dissimilar fabrics and belongs to three generations but has more or less similar chemical composition. It occurs as patchy inclusions, accicular crystallites, egg-shaped micro-nodules, medium to coarse-grained mosaics, vein and fissure fillings and as wedge-shaped linings. The manganite is either formed froin Mn-oxide (jacobsite and vredenburgite) phases through retrogressive metamorphic transformation (Ma1) or generated through pseudomorphic replacement of Mn-sillicate (rho

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6

Chakraborty, D., and T. K. Baidya. "Multi-Phase Manganese Mineralization in the Noamundi Synclinorium, East Indian Shield." Energy and Earth Science 3, no. 1 (2020): p26. http://dx.doi.org/10.22158/ees.v3n1p26.

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Manganese mineralization associated with phyllites in and around Joda, Odisha belongs to the Iron Ore Group of Noamundi basin and is a part of Jamda-Koira belt of East Indian Shield. The present study area comprises low to medium grade tectonites containing economic resources of both iron and manganese. Present study is concentrated on Manganese mineralization. Field study and petro-mineralogical observations reveal syngenetic character of manganese ores comprising lowT higher oxides viz. pyrolusite, cryptomelane, manganite as major Mn-minerals along with highT lower oxides viz. jacobsite, bix

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7

Al-Saif, Adel M., Rasha S. Abdel-Hak, Mohamed M. S. Saleh, Mohammed H. Farouk, and Shimaa R. Hamed. "Green-Nano Manganese and Its Impact on the Growth, Yield, and Fruit Properties of Flame Seedless Grapes." Agronomy 14, no. 7 (2024): 1464. http://dx.doi.org/10.3390/agronomy14071464.

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The present work aimed to evaluate green-nano manganese produced at the Microbial Biotechnology Department, National Research Centre, Egypt, and assess its impact on the growth, yield, and fruit properties of grapevines. To this end, two experiments were conducted. The first was microbiological, where several incorporation strategies were utilized to enrich the yeast with manganese, as follows: (1) manganese was added to the liquid medium (non-growth phase), and (2) manganese was added after 24 h of incubation (growth phase). The results showed that the non-growth phase had a reduced possibili

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8

Snizhnoi, Hennadii, Volodymyr Sazhnev, Valentyn Snizhnoi, and Anatoliy Mukhachev. "Details of mining beneficiation equipment made of medium manganese wear-resistant steel." IOP Conference Series: Earth and Environmental Science 1348, no. 1 (2024): 012027. http://dx.doi.org/10.1088/1755-1315/1348/1/012027.

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Abstract For mining and beneficiation equipment, medium-manganese steel for the production of fast-wearing replaceable parts is proposed. The object of research was the effect of phosphorus on the physical and mechanical properties of austenitic manganese steels with a manganese concentration within the standard for steel 110G13L and below the regulated lower level. Phosphorus more significantly reduces impact toughness, relative elongation and relative narrowing in steels with a lower manganese content than in classic Hadfield steel. In steels with a reduced manganese content, phosphorus has

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9

Karoblis, Dovydas, Aleksej Zarkov, Tomas Murauskas, and Aivaras Kareiva. "Molten Salt Synthesis of Micro-Sized Hexagonally Shaped REMnO3 (RE = Y, Er, Tm, Yb)." Inorganics 11, no. 5 (2023): 178. http://dx.doi.org/10.3390/inorganics11050178.

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Yttrium manganite (YMnO3) is a compound belonging to the hexagonal rare earth manganites family, which demonstrates multiferroic properties. This material can be prepared by several synthetic approaches, with the most common one being the solid-state synthesis. In this work, we show a possibility of preparing this material via molten salt synthesis using the NaCl-KCl mixture as the reaction medium and yttrium and manganese nitrates as the starting materials. We demonstrate that, by varying the reaction temperature and the nitrates-to-chlorides ratio, it is feasible to synthesize hexagonally sh

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10

Ito, Atsushi, Akinobu Shibata, and Nobuhiro Tsuji. "Thermomechanical Processing of Medium Manganese Steels." Materials Science Forum 879 (November 2016): 90–94. http://dx.doi.org/10.4028/www.scientific.net/msf.879.90.

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As third generation advanced high strength steels (AHSS) managing both high strength and good ductility/formability, medium manganese steels containing 3-7 wt% Mn have attracted attentions recently. However, the fundamental microstructure evolution during thermomechanical processing and heat treatments in medium-Mn steels is still unclear. In the present study, changes in microstructure and mechanical properties during various heat treatments and thermomechanical processes of 4Mn-0.1%C steel were studied. It was clarified from dilatometric measurements that ferrite transformation in the 4Mn-0.

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11

Rana, Radhakanta. "Special issue on ‘Medium manganese steels’." Materials Science and Technology 35, no. 17 (2019): 2039–44. http://dx.doi.org/10.1080/02670836.2019.1673971.

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12

Lee, Y. K., and J. Han. "Current opinion in medium manganese steel." Materials Science and Technology 31, no. 7 (2014): 843–56. http://dx.doi.org/10.1179/1743284714y.0000000722.

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13

Farkas, Bence, Marek Bujdoš, Filip Polák, et al. "Bioleaching of Manganese Oxides at Different Oxidation States by Filamentous Fungus Aspergillus niger." Journal of Fungi 7, no. 10 (2021): 808. http://dx.doi.org/10.3390/jof7100808.

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This work aimed to examine the bioleaching of manganese oxides at various oxidation states (MnO, MnO·Mn2O3, Mn2O3 and MnO2) by a strain of the filamentous fungus Aspergillus niger, a frequent soil representative. Our results showed that the fungus effectively disintegrated the crystal structure of selected mineral manganese phases. Thereby, during a 31-day static incubation of oxides in the presence of fungus, manganese was bioextracted into the culture medium and, in some cases, transformed into a new biogenic mineral. The latter resulted from the precipitation of extracted manganese with bio

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14

Temmel, C., B. Karlsson, and N. G. Ingesten. "Quenching cracks in medium carbon steel initiated at manganese sulfide inclusions." HTM Journal of Heat Treatment and Materials 62, no. 5 (2007): 236–42. http://dx.doi.org/10.1515/htm-2007-0009.

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Abstract Quench crack propensity has been investigated for two identical medium carbon steels (50CrMo4) which only differed in sulfur content. The standard variant of the material was affected by manganese sulfide inclusions whereas the low sulfur material was essentially free of sulfides. 80 mm, cylindrical test specimens were used. The test specimens had been cut out of cross rolled steel plates in which the manganese sulfide were flattened to discoid shape. The specimen orientation was in direction of principal deformation where the flattened sulfides were aligned with the test specimen axi

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15

Ryabov, A. V. "Medium-Carbon Free-Cutting Steel." Materials Science Forum 946 (February 2019): 47–52. http://dx.doi.org/10.4028/www.scientific.net/msf.946.47.

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The paper presents theoretical and experimental studies of the formation processes of boron nitride, aluminium nitride, aluminium oxide and manganese sulphide inclusions in a free-cutting steel. Fact Sage software was used to model the behaviour of non-metallic inclusions. Formation temperatures and the amount of key inclusions in steel were calculated. Formation order of inclusions is as follows: aluminium oxide > boron nitride > manganese sulphide > aluminium nitride. The object of study was the A45AR grade steel in 1.1–1.2 kg ingots. It was melted in an induction furnace, and alumi

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16

Niven, Donald F., Andrew Ekins, and Aws A.-W. Al-Samaurai. "Effects of iron and manganese availability on growth and production of superoxide dismutase byStreptococcus suis." Canadian Journal of Microbiology 45, no. 12 (1999): 1027–32. http://dx.doi.org/10.1139/w99-114.

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A complex medium supported good growth of the type strain of Streptococcus suis irrespective of the presence or absence of a high concentration (1 mM) of the iron chelating agent, ethylenediamine di-o-hydroxyphenylacetic acid. Good growth was also obtained using a complex medium that had been treated with Chelex-100 to reduce the iron content, but only if this medium was supplemented with manganese; supplementation with iron had little effect. Collectively, these results indicate that S. suis requires manganese, but not iron, for growth. Polyacrylamide gel electrophoresis of cell extracts foll

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17

Tazwar, Gajala, and Vijay Devra. "Soluble Colloidal Manganese Dioxide: Formation, Characterization and Application in Oxidative Kinetic Study of Ciprofloxacin." Bulletin of Chemical Reaction Engineering & Catalysis 15, no. 1 (2019): 74–83. http://dx.doi.org/10.9767/bcrec.15.1.5436.74-83.

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Soluble colloidal manganese dioxide was formed by reduction of potassium permanganate with sodium thiosulphate in neutral aqueous medium at 25 ºC. The obtained nano-sized colloidal manganese dioxide was found to be dark reddish-brown in color and stable for several months. The formation of manganese dioxide was confirmed by UV-visible spectrophotometer and determination of oxidation state of Mn species in manganese dioxide. The effect of different concentration of sodium thiosulphate on the formation of manganese dioxide was also studied. The nano-sized colloid manganese dioxide was characteri

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18

Morawiec, M., V. Ruiz-Jimenez, C. Garcia-Mateo, and A. Grajcar. "Thermodynamic analysis and isothermal bainitic transformation kinetics in lean medium-Mn steels." Journal of Thermal Analysis and Calorimetry 142, no. 5 (2020): 1709–19. http://dx.doi.org/10.1007/s10973-020-10259-z.

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AbstractThe work presents the results of thermodynamic analysis of two medium manganese steels with different Mn contents. The steels containing 3.1 and 3.6% of manganese were subjected to theoretical thermodynamic calculations using MUCG83 software and dilatometric experiments. The steels were heat-treated in two different isothermal holding temperatures of 400 and 350 °C for 15 min. The bainite transformation kinetics at different temperatures for different manganese contents was investigated. In the steel including 3.1% Mn, a complete transformation was obtained. The results indicated a str

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19

Fisher, Carolyn R., Elizabeth E. Wyckoff, Eric D. Peng, and Shelley M. Payne. "Identification and Characterization of a Putative Manganese Export Protein in Vibrio cholerae." Journal of Bacteriology 198, no. 20 (2016): 2810–17. http://dx.doi.org/10.1128/jb.00215-16.

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ABSTRACTManganese plays an important role in the cellular physiology and metabolism of bacterial species, including the human pathogenVibrio cholerae. The intracellular level of manganese ions is controlled through coordinated regulation of the import and export of this element. We have identified a putative manganese exporter (VC0022), namedmneA(manganeseexporterA), which is highly conserved amongVibriospp. AnmneAmutant exhibited sensitivity to manganese but not to other cations. Under high-manganese conditions, themneAmutant showed an almost 50-fold increase in intracellular manganese levels

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20

Pickard, M. A., H. Vandertol, R. Roman, and R. Vazquez-Duhalt. "High production of ligninolytic enzymes from white rot fungi in cereal bran liquid medium." Canadian Journal of Microbiology 45, no. 7 (1999): 627–31. http://dx.doi.org/10.1139/w98-233.

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White rot fungi from the University of Alberta Mold Herbarium, identified as able to degrade aromatics from a study of PCB metabolism, were examined for production of ligninolytic enzymes. Production of lignin peroxidase, manganese peroxidase, laccase, and veratryl alcohol oxidase were monitored during growth in different media. Good growth but low enzyme production occurred in a glucose - malt extract - yeast extract medium. Media containing 2% cereal bran in 60 mM phosphate buffer supported high levels of laccase production, up to 13 000 U/L in Coriolopsis gallica UAMH 8260 and manganese per

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21

Luan, G., O. Volkova, and J. Mola. "Design of Fully Austenitic Medium Manganese Steels." IOP Conference Series: Materials Science and Engineering 373 (June 2018): 012002. http://dx.doi.org/10.1088/1757-899x/373/1/012002.

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22

Messaoudi, Bouzid, Suzanne Joiret, Michel Keddam, and Hisasi Takenouti. "Anodic behaviour of manganese in alkaline medium." Electrochimica Acta 46, no. 16 (2001): 2487–98. http://dx.doi.org/10.1016/s0013-4686(01)00449-2.

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23

Tverdokhlib, Mariia, Inna Trus, Vita Halysh, Arsenii Taranenko, and Mykola Gomelya. "STUDY OF THE EFFECT OF MEDIUM PH ON THE KINETICS OF THE WATER DEMANGANATION PROCESS." Journal of Chemical Technology and Metallurgy 60, no. 1 (2025): 87–94. https://doi.org/10.59957/jctm.v60.i1.2025.8.

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During the investigation of manganese ions oxidation with the oxygen of the air in an aqueous medium it was established that pH has a significant effect on the process. Studies have shown that within 24 hours of settling the solutions with manganese ions concentrations in the range between 1.0 to 30.0 mg dm-3 under the condition of free contact of solution surface with the oxygen of the air, the efficiency of the oxidation was quite insignificant and was only 10 - 20 %. However, in the case of increasing the pH to 8.5 - 9.5 and passing the air through the solution, an increase in the removal e

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24

Scott, Colin P. "Recent Developments in Medium and High Manganese Steels." Metals 12, no. 5 (2022): 743. http://dx.doi.org/10.3390/met12050743.

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A huge amount of intellectual effort is currently being devoted to the study of medium and high manganese steels due to the diverse and impressive mechanical properties that can be achieved with these steels [...]

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25

Al-Maali, G. A., N. A. Bisko, and A. M. Ostapchuk. "The effect of citrate and sulfate of different metals on carbohydrates composition of medicinal mushroom Trametes versicolor (Polyporales, Polyporaceae)." Visnyk of Dnipropetrovsk University. Biology, medicine 7, no. 1 (2016): 32–36. http://dx.doi.org/10.15421/021606.

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The aim of our research was to study the influence of citrate and sulfate of copper, manganese and zinc on the carbohydrates composition of biomass of the medicinal mushroom Trametes versicolor (L.) Lloyd. cultivated in a liquid medium. The studied strain of Trametes versicolor 353 was obtained from the Culture Collection of Mushrooms (IBK) from the M. G. Kholodny Institute of Botany, National Academy of Sciences of Ukraine. Citrates of copper, manganese and zinc were obtained from the Institute of Nanobiotechnologies and Resource Conservation of Ukraine, Kyiv. In this study we used glucose-pe

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Gramlich, A., M. A. Auger, and S. Richter. "Plasma Nitriding of an Air-Hardening Medium Manganese Forging Steel." HTM Journal of Heat Treatment and Materials 77, no. 4 (2022): 298–315. http://dx.doi.org/10.1515/htm-2022-1017.

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Abstract The impact of plasma nitriding on the microstructure and the hardness of a recently developed 4 wt.-% medium manganese steel are presented. In contrast to standard quench and tempering steels, the investigated material achieves its martensitic microstructure by air-cooling from the forging heat, which enables the reduction of the carbon footprint of the forged components. The influence of nitriding on this grade of steel has not been investigated so far, but fundamental differences in comparison to standard nitriding steels are expected due to the increased manganese concentration. To

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Ali, M. "Tertiary enrichment of a manganese oxide tailings material using heavy medium separation (HMS)." Bangladesh Journal of Scientific and Industrial Research 49, no. 1 (2014): 35–40. http://dx.doi.org/10.3329/bjsir.v49i1.18852.

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A study was conducted on the enrichment of manganese oxide tailings material generated from sorting spiral concentration at Ghana Manganese Company (GMC) Limited, Nsuta. The investigation explored mineralogical and particle size characterisation and heavy medium separation technique. Analytical methods used include; X-Ray Fluorescence and Atomic Absorption Spectrometry (AAS). The material contained 9.01% Al2O3, 27.43 % SiO2, 23.64% MnO2 and 9.86% Fe2O3, the other oxides range between 0.04 to 1.55 %. By treating the individual size fractions at a bath density of 2.96, the highest ratio of conce

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28

FALCO, L., A. MARTÍNEZ, M. P. DI NANNO, H. THOMAS, and G. CURUTCHET. "STUDY OF A PILOT PLANT FOR THE RECOVERY OF METALS FROM SPENT ALKALINE AND ZINC-CARBON BATTERIES WITH BIOLOGICAL SULPHURIC ACID AND POLYTHIONATE PRODUCTION." Latin American Applied Research - An international journal 44, no. 2 (2014): 123–29. http://dx.doi.org/10.52292/j.laar.2014.429.

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The recovery of Zn and Mn from spent alkaline and Zn-C batteries with a biohydrometallurgycal process was studied in a pilot plant that consists of an air-lift bioreactor with a sulphur packed bed where Acidithiobacillus thiooxidans produces an acid-reducing medium; a leaching reactor where the acid-reducing medium is mixed with the battery powder, and a recovery reactor where metals are recovered from the leaching liquor by electrolysis. Results show that with acid medium (350 mM[H+]) produced in 12 days by Acidithiobacillus thiooxidans in the bioreactor, an extraction of 100% of Zn and 67% o

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29

Hou, Fei Fei, Atsushi Ito, Yu Bai, Akinobu Shibata, and Nobuhiro Tsuji. "Microstructure Evolution and Change in Mechanical Properties of Medium Mn Steels during Thermomechanical Processing." Materials Science Forum 941 (December 2018): 346–51. http://dx.doi.org/10.4028/www.scientific.net/msf.941.346.

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Medium manganese steels are nowadays energetically investigated as the third generation advanced high strength steels (AHSS) because of their excellent balance between material cost and mechanical properties. However, the phase transformation and microstructure evolution in medium manganese steels during various heat treatments and thermomechanical processing are still unclear. The present study firstly examined kinetics of static phase transformation behavior and microstructural change in a 3Mn-0.1C medium manganese steel. Hot compression tests were also carried out to investigate the influen

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30

Grajcar, Adam, Andrzej Kilarski, and Aleksandra Kozlowska. "Microstructure–Property Relationships in Thermomechanically Processed Medium-Mn Steels with High Al Content." Metals 8, no. 11 (2018): 929. http://dx.doi.org/10.3390/met8110929.

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Detailed studies on microstructure–property relationships of thermomechanically processed medium-Mn steels with various manganese contents were carried out. Microscopic techniques of different resolution (LM, SEM, TEM) and X-Ray diffraction methods were applied. Static tensile tests were performed to characterize mechanical properties of the investigated steels and to determine the tendency of retained austenite to strain-induced martensitic transformation. Obtained results allowed to characterize the microstructural aspects of strain-induced martensitic transformation and its effect on the me

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31

Glover, Alexandra, Paul J. Gibbs, Cheng Liu, et al. "Deformation Behavior of a Double Soaked Medium Manganese Steel with Varied Martensite Strength." Metals 9, no. 7 (2019): 761. http://dx.doi.org/10.3390/met9070761.

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The effects of athermal martensite on yielding behavior and strain partitioning during deformation is explored using in situ neutron diffraction for a 0.14C–7.14Mn medium manganese steel. Utilizing a novel heat treatment, termed double soaking, samples with similar microstructural composition and varied athermal martensite strength and microstructural characteristics, which composed the bulk of the matrix phase, were characterized. It was found that the addition of either as-quenched or tempered athermal martensite led to an improvement in mechanical properties as compared to a ferrite plus au

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Bhowmik, Kanti Ranjan Nath. "Aqueous Medium Synthesis and Characterization of Mixed-Ligand Molecular Complexes of Manganese(III)." Oriental Journal Of Chemistry 40, no. 1 (2024): 202–8. http://dx.doi.org/10.13005/ojc/400125.

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A fluoride-aided stabilization of manganese(III) was demonstrated by the preparation of unique complexes of the molecular mixed ligand fluoromanganate(III) from an aqueous medium. Complexes of mixed ligand fluoromanganate(III) were synthesized by reacting MnO(OH), 40% HF with nitrogen donor ligands that may function as neutral ligands, such as pyridine, ethylene diamine, or imidazole. The molecular complexes that were generated are stable and may be kept in polythene bags for extended periods of time without losing their properties. Consistency may be determined in a number of ways, including

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33

Teplitskaja, L., J. Kutjavina, I. Jurkova, and V. Tajkova. "The influence of manganese on growth characteristics of callus culture of Astragalus dasyanthus Pall." Modern Phytomorphology 2 (April 1, 2012): 125–27. https://doi.org/10.5281/zenodo.162613.

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34

Sun, Binhan, Fateh Fazeli, Colin Scott, et al. "Microstructural characteristics and tensile behavior of medium manganese steels with different manganese additions." Materials Science and Engineering: A 729 (June 2018): 496–507. http://dx.doi.org/10.1016/j.msea.2018.04.115.

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35

Allam, Tarek, Wolfgang Bleck, Christian Klinkenberg, Björn Kintscher, Ulrich Krupp, and Jenny Rudnizki. "The continuous casting behavior of medium manganese steels." Journal of Materials Research and Technology 15 (November 2021): 292–305. http://dx.doi.org/10.1016/j.jmrt.2021.08.019.

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36

Kumar singh, Manish, Anil Kumar Verma, and Ashok Kumar. "Microstructure and Mechanical properties of Medium Manganese Steels." Materials Today: Proceedings 56 (2022): 356–67. http://dx.doi.org/10.1016/j.matpr.2022.01.195.

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37

Zhenming, Xu. "Eutectic growth in as-cast medium manganese steel." Materials Science and Engineering: A 335, no. 1-2 (2002): 109–15. http://dx.doi.org/10.1016/s0921-5093(01)01946-3.

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38

Suh, Dong Woo, Joo Hyun Ryu, Min Sung Joo, Hong Seok Yang, Kyooyoung Lee, and H. K. D. H. Bhadeshia. "Medium-Alloy Manganese-Rich Transformation-Induced Plasticity Steels." Metallurgical and Materials Transactions A 44, no. 1 (2012): 286–93. http://dx.doi.org/10.1007/s11661-012-1402-3.

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39

Wang, Cunyu, Xiaodong Li, Shuo Han, et al. "Warm Stamping Technology of the Medium Manganese Steel." steel research international 89, no. 9 (2017): 1700360. http://dx.doi.org/10.1002/srin.201700360.

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40

Miljkovic, Miona, Sladjana Davidovic, Aleksandra Djukic-Vukovic, et al. "Utilization of agro-industrial by-products as substrates for dextransucrase production by Leuconostoc mesenteroides T3: Process optimization using response surface methodology." Chemical Industry 75, no. 3 (2021): 135–46. http://dx.doi.org/10.2298/hemind200710015m.

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Dextransucrase (DS) is a glucosyltransferase (E. C. 2.4.1.5) that catalyzes the transfer of glucosyl residues from sucrose to dextran polymer and liberates fructose. This enzyme isassociated with a wide application range of dextran and oligosaccharides. DS production by Leuconostoc mesenteroidesT3 was optimized using a Central Composite Design under the Response Surface Methodology. Three variables were chosen for optimization: distillery stillage, sucrose and manganese concentration. The results showed that sucrose and manganese concentrations had a positive linear effect on DS production whi

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Poling, Whitney A., Emmanuel De Moor, John G. Speer, and Kip O. Findley. "Temperature Effects on Tensile Deformation Behavior of a Medium Manganese TRIP Steel and a Quenched and Partitioned Steel." Metals 11, no. 2 (2021): 375. http://dx.doi.org/10.3390/met11020375.

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Third-generation advanced high-strength steels (AHSS) containing metastable retained austenite are being developed for the structural components of vehicles to reduce vehicle weight and improve crash performance. The goal of this work was to compare the effect of temperature on austenite stability and tensile mechanical properties of two steels, a quenched and partitioned (Q&P) steel with a martensite and retained austenite microstructure, and a medium manganese transformation-induced plasticity (TRIP) steel with a ferrite and retained austenite microstructure. Quasi-static tensile tests w

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Kanti, Ranjan Nath Bhowmik, Kr. De Arjun, and N. Dutta Purkayastha R. "Stabilization of manganese(III) in aqueous medium. Synthesis and spectral characterization of new mixed-ligand fluoromanganate(III) containing dicarboxylic and hydroxy-carboxylic acids as co-ligands." Journal of Indian Chemical Society Vol. 89, Feb 2012 (2012): 177–87. https://doi.org/10.5281/zenodo.5752437.

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Department of Chemistry, Tripura University, Suryamaninagar-799 022, West Tripura, India <em>E-mail </em>: rndp09@gmail.com <em>Manuscript received 06 October 2010, revised 05 May 2011, accepted 20 June 2011</em> Fluoride assisted stabilization of manganese(m) has been demonstrated by synthesizing new mixed-ligand fluoromanganate(lll) complexes from aqneous medium. Mixed-ligand fluoromanganate(lll) complexes have been synthesized from a reaction of MnO(OH), 40% HF with corresponding co-ligands in aqueous medium in presence of alkali metal carbonate. Newly synthesized complexes are stable in ab

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Deniz, Fatih, and Elif Tezel Ersanli. "An Effectual Biosorbent Substance for Removal of Manganese Ions from Aquatic Environment: A Promising Environmental Remediation Study with Activated Coastal Waste of Zostera marina Plant." BioMed Research International 2020 (July 8, 2020): 1–8. http://dx.doi.org/10.1155/2020/7806154.

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In the present research paper, a biosorptive remediation practice for an aqueous medium sample polluted with manganese ions was implemented using the activated coastal waste of the Zostera marina plant. This is the first report in the literature on the utilization of current modified biological waste as a biosorbent substance for the removal of manganese ions from the water environment. The analyses of biosorbent characterization, environmental condition, kinetic, equilibrium, and comparison were performed to introduce the ability of prepared biosorbent for the removal of manganese from the aq

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Janulczyk, Robert, Susanna Ricci, and Lars Björck. "MtsABC Is Important for Manganese and Iron Transport, Oxidative Stress Resistance, and Virulence of Streptococcus pyogenes." Infection and Immunity 71, no. 5 (2003): 2656–64. http://dx.doi.org/10.1128/iai.71.5.2656-2664.2003.

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ABSTRACT MtsABC is a Streptococcus pyogenes ABC transporter which was previously shown to be involved in iron and zinc accumulation. In this study, we showed that an mtsABC mutant has impaired growth, particularly in a metal-depleted medium and an aerobic environment. In metal-depleted medium, growth was restored by the addition of 10 μM MnCl2, whereas other metals had modest or no effect. A characterization of metal radioisotope accumulation showed that manganese competes with iron accumulation in a dose-dependent manner. Conversely, iron competes with manganese accumulation but to a lesser e

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El-Shafei, Shaimaa, Fatma Ramadan, Mohamed Essawy, Ahmed Henaish, and Bassem Nabawy. "Geology, mineralogy and geochemistry of manganese ore deposits of the Um Bogma Formation, south-western Sinai, Egypt: genesis implications." Mining of Mineral Deposits 16, no. 3 (2022): 86–95. http://dx.doi.org/10.33271/mining16.03.086.

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Purpose.This paper aims to understand the genesis and nature of the manganese ore deposits associated with the Ras Samra Member of the Um Bogma Formation in the southwest of Sinai. Methods. Mineralogical and geochemical studies of 50 selected samples of manganese ores and host shale have been conducted. These samples have been taken from different sites representing the Ras Samra Member. Findings. The dominant manganese minerals are pyrolusite and hausmannite. In most samples, helvite and hematite are noted in association with pyrolusite. In the investigated manganese ores, wide ranges of MnO

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Leták, Radek, Ludmila Kučerová, Hana Jirková, Štěpán Jeníček, and Filip Votava. "Changes in Mechanical Properties of Medium Manganese Steel After Forming, Press Hardening, and Heat Treatment." Materials 18, no. 6 (2025): 1196. https://doi.org/10.3390/ma18061196.

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Solutions and new processes are continually being developed to produce components demonstrating high strength and elongation. This paper focuses on medium manganese steel with a composition of 0.2% carbon, 3% manganese, and 2.15% aluminium (by weight percent). The mechanical properties of the steel and the effect of aluminium and manganese on the microstructure are investigated. The steel sheets are shaped into omega profiles using a press tool, followed by the intercritical annealing of the samples to enhance their ductility. Before the experiment, the anticipated values were a tensile streng

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Әбдірашит, Асылбек, Асылбек Нурумгалиев, Ерболат Махамбетов та Онуралп Юсел. "ОРТА КӨМІРТЕКТІ ФЕРРОМАРГАНЕЦ ТЕХНОЛОГИЯСЫН ЗЕРТТЕУ ЖӘНЕ ӘЗІРЛЕУ". Научный журнал "Вестник Актюбинского регионального университета имени К. Жубанова" 77, № 3 (2024): 137–44. http://dx.doi.org/10.70239/arsu.2024.t77.n3.18.

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This article presents the results of medium-carbon ferromanganese smelting from domestic manganese ores under large-scale laboratory conditions. Data on the production and demand for refined ferromanganese produced during the last successful year are provided. Since 2020, refined ferromanganese production has decreased by approximately 1,2 million tons, which is 18% lower than in 2019. This decline was caused by the outbreak of the coronavirus (COVID-19), which began in China in 2019, and the subsequent worldwide pandemic, as well as geopolitical conflicts (Russia — Ukraine), which started in

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Kozłowska, Aleksandra, Barbara Grzegorczyk, Mateusz Morawiec, and Adam Grajcar. "Explanation of the PLC Effect in Advanced High-Strength Medium-Mn Steels. A Review." Materials 12, no. 24 (2019): 4175. http://dx.doi.org/10.3390/ma12244175.

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The paper reviews the recent works concerning the Portevin–Le Chatelier (PLC) effect in Advanced High-Strength Steels (AHSSs) with a special attention to high-strength medium-manganese steels. Theories explaining the mechanism of the plastic instability phenomenon in steels with medium- and high-Mn contents were discussed. The relationships between microstructural effects such as TRIP (Transformation-Induced Plasticity), TWIP (Twinning-Induced Plasticity) and the PLC effect were characterized. The effects of processing conditions including a deformation state (hot-rolled and cold-rolled) and s

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Dong, Han, Wen Quan Cao, and Jie Shi. "Formation of an Ultrafine-Grained Austenite-Containing Microstructure from a Cold-Rolled Medium-Manganese Steel Processed Using Intercritical Annealing." Materials Science Forum 762 (July 2013): 31–37. http://dx.doi.org/10.4028/www.scientific.net/msf.762.31.

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The behavior of 60% cold-rolled medium-manganese steel (0.1C5Mn) during intercritical annealing, has been examined using various techniques. Microstructural observations showed a slight coarsening of the subgrain/grain structure during intercritical annealing, without any apparent change in the misorientation distribution. In addition, the formation of ultrafine austenite grains took place mainly at high-angle boundaries and rarely at low angle boundaries, suggesting a heterogeneous austenite nucleation process in this steel. The results indicated that the annealing behavior of cold rolled med

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Блинов, Андрей Владимирович, Давид Гурамиевич Маглакелидзе, Александр Александрович Кравцов, et al. "INFLUENCE OF ACTIVE ACIDITY OF THE MEDIUM ON THE STABILITY OF MNO NANOPARTICLES." Physical and Chemical Aspects of the Study of Clusters, Nanostructures and Nanomaterials, no. 12() (December 15, 2020): 33–41. http://dx.doi.org/10.26456/pcascnn/2020.12.033.

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В работе впервые представлены результаты исследования микроструктуры наночастиц диоксида марганца, стабилизированных серосодержащими аминокислотами. По результатам сканирующей электронной микроскопии обнаружено наличие в образцах наночастиц диаметром 15 - 30 нм. С помощью спектрофотомерии установлены оптимальные массовые соотношения прекурсоров для получения стабильных золей наночастиц диоксида марганца, которые составляют KMnO: метионин - 1:1 и KMnO: цистеин - 3:1. Исследование влияния активной кислотности среды на стабильность наночастиц диоксида марганца показало, что образцы MnO, полученны

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