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2081
DETERMINATION OF WATER QUALITY IN SPRINGS OF EKATERINBURG CITY AND SVERDLOVSK OBLAST
Published 2020-10-01“…Inconsistency of spring waters with sanitary standards for chemical factors in the vast majority of cases was associated with excess MPC for iron. Also, in a number of samples, an excess of the MPC for manganese and barium was found, while in the spring Europe-Asia (Yekaterinburg) an almost 9-fold excess of the MPC for barium was found.…”
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2082
Effect of Varied Cashew Nut Ash Reinforcement in Aluminum Matrix Composite
Published 2023-01-01“…The primary XRD study on CTB confirms the presence of SiO2, Al2O3, iron-rich ferro-axinite, MgO, and Mn, which improve the material’s properties when used as reinforcement. …”
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2083
Prehistoric copper tools from the territory of Serbia
Published 2009-01-01“…They had been in use for a rather long period of time - from the end of the early phase of the Vinča culture until the Middle Bronze Age and some types of these objects even until the very beginning of the Iron Age. The copper alloyed with small quantities of arsenic, lead and tin started to appear already by the end of the Eneolithic indicating the attempts of prehistoric metallurgist to improve technical characteristics of the copper. …”
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2084
Necklacelike Pattern of Vortex Bound States
Published 2025-02-01“…Here, however, we report a completely new type of vortex pattern which is necklacelike in an iron-based superconductor KCa_{2}Fe_{4}As_{4}F_{2}. …”
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2085
Determination of Heavy Metal Pollution in the Dankran River in the Bekwai Municipality of Ghana
Published 2022-01-01“…The physicochemical properties, the biological oxygen demand (BOD), chemical oxygen demand (COD), and nitrogen, phosphorus, and potassium (NPK) concentrations were all within the allowable healthy limits according to WHO standards. Iron was the predominant metal in the Dankran river, with the highest concentration of 6.5913 mg/l. …”
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2086
Development and Application of Analogous Materials for Fluid-Solid Coupling Physical Model Test
Published 2022-01-01“…In this study, a new type of analogous material reflecting the fluid-solid coupling effect is developed with iron powder, barite powder, and quartz sand as aggregates, white cement as a cementing agent, and silicone oil as a regulator. …”
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2087
Enseignement de l’architecture paysagère et démocratie
Published 2022-07-01“…From the mid-seventies to the end of the eighties existing programs increased their number of staff members and students. The fall of the Iron Curtain, in 1989, resulted in the establishment of several new university degree programs in Eastern Europe. …”
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2088
Assessment of Groundwater Quality Using Water Quality Index from Selected Springs in Manga Subcounty, Nyamira County, Kenya
Published 2022-01-01“…Water quality index was calculated based on pH, turbidity, nitrate, phosphate, calcium, magnesium, chloride, sulphates, fluoride, iron, total phosphorous, total hardness, total alkalinity, total dissolved solids, and total coliform. …”
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2089
Short-Term Forecasting of Global Energy and Metal Prices: VAR and VECM Approaches
Published 2022-12-01“…This study introduces a set of multivariate models with the aim of forecasting global prices of 1) crude oil, 2) natural gas, 3) iron ore, and 4) steel. Various versions of vector autoregression and error-correction models are applied to monthly data for the short-term prediction of nominal commodity prices six months ahead, and to examine forecast accuracy. …”
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2090
Study on the Color Genesis of South Red Agate and the Geological Characteristics of the Siliceous Gravel Layer
Published 2022-01-01“…The analysis and test results show that the south red agate has a typical radial fiber structure, and the main chemical component is SiO2; Under the orthogonal polarizing microscope, a large number of round reddish brown mineral inclusions with banded distribution can be seen, the spot-colored mineral is iron oxide hematite, and calcite of the late hydrothermal origin can be seen in the cracks. …”
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2091
Pech Piélat (Séniergues, Lot) : un relais routier antique en pays cadurque
Published 2016-12-01“…Situated in a proto-historical location from the Iron Age, the edifice dates from the end of the 1st century AD, followed by a phase of renovations, notably the addition of a thermal wing at the beginning of the 2nd century AD. …”
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2092
Landscape architecture education and democracy
Published 2022-07-01“…From the mid-seventies to the end of the eighties existing programs increased their number of staff members and students. The fall of the Iron Curtain, in 1989, resulted in the establishment of several new university degree programs in Eastern Europe. …”
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2093
Gazetecilik Yıllarında Bülent Ecevit ve Anti-Komünizm (1950-1961)
Published 2021-12-01“…Ecevit, who always preserved his CHP identity, used the analogy of the Soviets/iron curtain/communism in his criticisms of the DP, while criticizing the Democrat Party in the struggle against communism.…”
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2094
Effect of Aluminum Content on Microstructure and Properties of Fe-1.4C-1.5Cr-Alx Steel
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2095
Bœufs gaulois et bœufs français : morphologies animales et dynamiques économiques au cours de La Tène et des périodes historiques
Published 2018-12-01“…From the first decrease in livestock size as a consequence of domestication, to growth between the Iron Age and the Roman period, and small individuals during the Middle Ages to the heavy Charolais breeds currently grazing in our pastures, this study aims to link cattle morphology and economic variations in order to improve our vision of French pastoral history, based on archaeozoological remains. …”
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2096
Synthesis and Use of Complex Titanium-Containing Coagulant in Water Purification Processes
Published 2025-01-01“…The comparison of the coagulation efficiency of traditional aluminum- and iron-containing reagents and freshly synthesized reagents showed that the use of complex titanium-containing coagulants allows us not only to minimize the residual concentrations of various pollutants (phosphates, turbidity, oxidizable organic compounds) but also to reduce the reagent consumption by 20–25%, as well as to intensify the processes of sedimentation and filtration of coagulation sludge. …”
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2097
Solitary Necrotic Nodule of the Liver: A Report of Two Cases and Review of the Literature
Published 2011-01-01“…The staining result of PAS, acid-fast, and iron was all negative, and AG + VG staining showed that the outline of reticular fibers and collagen was intact. …”
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2098
Physicochemical and Heavy Metals Assessments of Leachates from Aperin Abandoned Dumpsite in Ibadan City, Nigeria
Published 2010-01-01“…High concentrations of Iron, Manganese, Copper, Zinc, Nickel, Cadmium and Lead were also observed. …”
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2099
Chemical Engineer George L. Standart – between Science and Ideology
Published 2025-01-01“…He was driven to do that by his leftist mindset, his conviction that there lay a more just and peaceful world behind the Iron Curtain, and also the feeling that he was at risk in his homeland, unsettled by McCarthyism. …”
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2100
Research on the optimal laser preparation process parameters of groove-shaped micro-texture on the mill roll surface
Published 2025-01-01“…The aim was to ascertain the ideal laser preparation process parameters for the creation of groove-shaped micro-textures on the surface of the chilled alloy cast iron, serving as the surface layer material of the wheat mill roll. …”
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