Mineralogical justification for potentiality of producing marketable hematite products

Hematite quartzites are a product of weathering of magnetite quartzites, which make up the ferruginous horizons of deposits of the Precambrian banded-iron formation. They occur all over the planet. The largest deposits are found in the iron-producing areas and basins of Central Kazakhstan, the Kursk magnetic anomaly, the Karelian-Kola region, Western Australia, Southeastern India, Brazil, the United States, and Canada. The geological and mineralogical issues of hematite quartzites as raw materials for producing concentrate and sinter ore have been studied most deeply and comprehensively for the deposits of the Kryvyi Rih basin and Central Kazakhstan. However, when developing an effective scheme for producing high-quality metallurgical raw materials, the mineralogical features of hematite ores have been taken into account insufficiently. The aim of the authors of the present work was to study the localization, structure of deposits and mineral composition of hematite quartzites as raw materials for sinter ore and concentrate production. Data from geological observations and mineralogical studies were used as source material. Proven geological, mineralogical, petrochemical methods were used. In accordance with the obtained results, the hematite quartzites are composed of ore-forming (quartz, hematite) and secondary (relict and newly formed) minerals. The total content of the hematite and quartz exceeds 90 mass %. The peculiarity of Ushkatyn III deposit ores is the high content of manganese oxides. The depth of distribution of the weathering crust composed of hematite quartzites varies from 200 to 1000 m. The hematite quartzites’ bodies are characterized by a zonal structure. Their central parts are represented by martite-micaceous hematite, micaceous hematite- martite quartzites; intermediate ones by martite quartzites; peripheral parts – by dispersed hematite-martite, kaolinite-martite-dispersed hematite quartzites. The horizons differ in the quantitative ratio of these varieties. The quantitative ratio of mineral varieties of hematite quartzites, morphology of individuals and aggregates of ore-forming and secondary minerals, their chemical composition and physical properties must be taken into account when developing the optimal technology for the production of high-quality hematite concentrate.

“FROM THE FOREST PASHA”: ON THE ETHNOLINGUISTIC INTERPRETATION OF THE NORTH RUSSIAN NAMES OF MUSHROOM AND BERRY DISHES

The article discusses the dialect vocabulary associated with the traditions of food-gathering in the Russian North: specifically, the names of mushrooms and berries—reflecting the features of their preparation and culinary properties—and the names of dishes made from forest products. The article was based on dialect, folklore, and ethnographic data from the Arkhangelsk, Vologda, and Kostroma regions, including unpublished data collected by the toponymic expedition of the Ural Federal University. The article reveals the features of the categorization of forest products in the language of the North Russian peasants, local features of the plant diet, as well as the possible impact of the Finno-Ugric food culture. The ethnolinguistic approach involves taking into account the quantitative ratio of lexemes, ideographic, and areal analysis of vocabulary, identifying its semantic and motivational connections. The analysis of the material established that a significant range of linguistic units and folklore are associated with the topic of picking mushrooms and berries in the Russian North. Categories and concepts characteristic of the culture of gathering are identified: “number of mushrooms / berries collected at a time”, “forest hosts of mushrooms and berries”, “generic names of forest products” (vologa, oboshcha), and “especially valuable forest products” (tsarskie “royal” mushrooms, berries, fish). The names of mushrooms and berries indicate the methods of their preparation, nutritional properties, and composition. The names of the berry dishes reflect the influence of the Finno-Ugric culinary tradition (compare the possibly borrowed designations of flour cereals with berries—the Arkhangelsk words galagatka, kiprishikha, the Arkhangelsk and Vologda word lyas). Folklore texts and narratives preserve plots and ideas about gathering: men as typical mushroom pickers, children and girls are berry pickers, each village having its own territory for collection, the exclusion of strangers from certain locations, the local specialization of territories (e.g. Vologda-originated nicknames such as vologodskie ryzhiki, obabki, etc.), and others.

Analysis of mineral compounds in dry dog foods and their compliance with nutritional guidelines

The aim of this study was to estimate complete extruded dry food for adult dogs, with a particular focus on: mineral profiles and ratios and the division into breed size. Dog foods were subjected to chemical analyzes to determine the content of macroelements and microelements. Additionally, the presence of heavy metals was verified and mineral ratios were estimated. The material for the research consisted of 15 randomly selected industrial household maintenance foods for adult dogs (five for large breed dogs, five for small breed dogs and five for all breeds dogs). All analyzed feeds met the FEDIAF recommended minimum recommended levels of microelements and macroelements, although the potassium level in 33% of the feeds analyzed was below the recommended minimum. 20% of the feeds tested exceeded the permissible quantitative ratio of calcium to phosphorus. In none of the tested feeds no heavy metals (Ni, Cd, Pb) were found. When choosing a feed, always pay attention to the label and carefully analyze the component of the product.

Confessional diversity of the Saratov Volga region of the 1930s

Based on the population census and archival materials, the article examines the confessional diversity of the Saratov Volga region in the late 1920s – early 1940s. Orthodoxy prevailed in this territory, however, a characteristic feature of regional life has always been polyconfessionalism, due to historical and geopolitical factors. In the article, the author characterizes the confessional space of the Saratov Volga region and gives a quantitative ratio of various confessions.

Longitudinal Evaluation of Serum MOG-IgG and AQP4-IgG Antibodies in NMOSD by a Semiquantitative Ratiometric Method

Background and purpose: Immunoadsorption (IA) is an antibody-depleting therapy used to treat neuromyelitis optica spectrum disorder (NMOSD) associated to antiaquaporin 4 (anti-AQP4-IgG) and antimyelin oligodendrocyte glycoprotein (anti-MOG-IgG) serum autoantibodies. Our aim was to evaluate longitudinal changes of serum MOG-IgG and AQP4-IgG antibody titer and to correlate it with the clinical status.Methods: Autoantibody titer and clinical features of two MOG-IgG+/AQP4-IgG– and two AQP4-IgG+/MOG-IgG– patients with NMOSD were collected at baseline (T0), after 6 IA courses (T1), and then 2 weeks (T2) and 6 months after treatment (T3). A fluorescent ratiometric assay was used for a quantitative detection of MOG and AQP4 antibodies, based on HEK-293 cells transfected with the full-length hMOG fused to GFP or h-AQP4-M23 isoform fused to m-cherry, respectively. We defined the antibody titer as MOG quantitative ratio (MOGqr) and AQP4 quantitative ratio (AQP4qr).Results: In Case 1, the MOGqr dropped from 0.98 at T0 to 0.14 at T3, and in Case 2, it decreased from 0.96 at T0 to undetectable at T3. In Case3, the AQP4qr remained high: 0.90 at T0 and 0.92 at T3. In Case 4, the AQP4qr decreased from 0.50 at T0 to undetectable at T3. Complete recovery was found in Cases 1, 2, and 4.Conclusions: Semiquantitative ratiometric method accurately detects even slight variation of MOG-IgG and AQP4-IgG titer, suggesting it may be useful to monitor the antibody titer during the disease course and maintenance immunotherapy.

Language Antinomies Concerning Spelling of Short Forms of Verbal Adjectives with н or нн

According to the Russian orthography, the spelling of short forms of verbal words in -нный with н (n) or with нн (nn) before a non-zero ending depends on the grammatical status of the word: participle or adjective. It is believed that writing expresses a systemic opposition of grammatical categories, i.e. the reflective vector of the antinomy “reflective – conditional” operates in this area. But is it possible to check whether the antinomy was chosen correctly to describe a particular picture of the studied area of writing? Are there any distinctive features of the types of spellings obtained as a result of the action of one or another antinomy? We attempt to answer the latter using the example of the spelling of short verbal adjectives. Proceeding from the fact that short forms of participles are always written with only one letter н, and short forms of adjectives with a non-zero ending are threefold: either with нн, or with н, or both with н and with нн, depending on the meaning and / or model management, — we will evaluate the quantitative ratio of these groups, how they are recorded in different dictionaries, compare the codification and the usual norm, as reflected in the texts of the RNC resources and Google books, we will determine what is being implemented in writing steadily and what is not. Based on the results obtained, one can try to understand whether the letter regularly reflects precisely the grammatical opposition.

New data on flint processing of East Trypillia tribes of the Bug-Dnieper interfluve

For the first time, materials of such settlements of the East Trypillia culture as Trostyanchyk, Onopriyivka І are published. Despite approximately the same quantitative ratio, even at first glance, the materials of these two leaflets differ significantly from each other. The Trostyanchyk complex is actually blade-type: blades prevail both among production waste and among the tool kit. Flakes and tools on them dominate in Onopriyivka. If the Trostyanchyk complex can be regarded as "classic" in terms of the tool kit: retouched blades, end-scrapers, sickle inserts, perforators on blades, etc., then the Onopriyivka complex looks more primitive: retouched flakes, notched tools and scrapers on flakes, and others. In Onopriyivka, unlike Trostyanchyk, finds of weapons are completely absent. Products from Onopriyivka are made mainly of local raw materials, while in Trostyanchyk there are approximately equal parts of products from local and imported raw materials, and products from local flint are made as carefully as products from Volyn flint. At the same time, in both cases we can confidently speak of the local nature of production. This is evidenced by both the use of local flint raw material and the specific items present in both collections. In Trostyanchyk, as already mentioned, a hammerstone was found, in Onopriyivka — core-like fragments and chips of modify of cores. Such differences can be explained by both territorial and chronological discrepancies. Onopriyivka I is earlier, refers to the end of stage ВІ, Trostyanchyk — to the end of stage ВІІ. Trostyanchyk is located on the Southern Bug, Onopriyivka — in the Bugo-Dnieper interfluve. Although, perhaps, this situation is explained by the unevenness of the study of these sites. In addition, materials from the Vladyslavchyk settlement are published for the first time. Based on their analysis, using analogies from related and synchronous sites, the author tried to identify the features of the East Trypillia lithic industry in the Bug-Dnieper rivers interfluve. As it turned out, at the modern level, the identification of such features is not possible. The materials of the East Trypillia culture of the region are, on the whole, more similar to the materials of the settlements of the West Trypillia culture, than to related sites on the Southern Bug. Keywords: East Trypillia culture, Kukutenʹ-Trypillya, production, flint processing, Bug-Dnieper interfluve

Determination of Optimal Composition for Freeze-Resistant Semifluid Grease by Scheffe Simplex Lattice Design

The purpose of this article is to present arguments for using Scheffe simplex lattice design to evaluate additive ratio for freeze-resistant semifluid grease. By extreme experiment method (simplex method) determined optimal quantitative ratio of additives, providing required performance level for freeze-resistant semifluid grease.

Evaluation of the effectiveness of innovative activities of companies in the agro-industrial complex in the context of the investment process

The study presents the results of studying the relationship between the effectiveness of innovation and the investment process, based on a comparison of concepts, analysis of the return on investment by type of activity, and ranking of factors of the effectiveness of innovation. The article presents a comparative analysis of methods for determining the effectiveness of innovative activities, which showed the quantitative ratio of factors that limit innovation and typical assessment methods. The key principle of building a system for the effectiveness of innovative activities of companies in the agro-industrial complex in the context of the investment process has been determined. An experimental test of the methodology for assessing the effectiveness of innovative activities from the investment position was carried out and a complex for the development of innovative activities was developed, which determined the opportunity to identify the most promising market niches of the company.