bluuebunny/crossref_metadata_2025_split huggingface dataset:
Use of fiberglass waste for strengthening ceramic porous composite
Authors: Yatsenko N D , Yatsenko A I , Vilbitskaya N A , Ovseenko S Y 
Published: July 2022

Abstract
The fiberglass reinforcing additives selection studies have been carried out and it has been found that basaltic fiberglass at firing temperatures 1000… 1050°C does not melt and provides for the formation of a homogeneous porous ceramic structure penetrated by filaments of fiber located on the surface of the sample, without affecting the internal porosity of the material. The strength of the porous ceramic based on the clay raw material and the porous additive in the form of high-calcium wastes formed during the water purification by calcification at the power stations, when introducing the reinforcing additive components, depends on the iron oxide content.
Wastewater treatment: methods and prospects
Authors: Bryukhov M , Ulrikh D 
Published: July 2022

Abstract
In this paper, the problems which can occur when wastewater is discharged into surface water bodies are considered. Modern methods of wastewater treatment are presented: mechanical, chemical, biological, physical-and-chemical, and combined methods. Examples of green infrastructure technologies with biofiltration function are given, which are easy to use and are effective in the treatment of both urban surface and production runoffs, and use the principles of landscape gardening. Characteristics of biofiltration swale, filtration strip, bioplateaus, biopools, and phytofilters are provided. The effectiveness of biological wastewater treatment with the use of bioengineering facilities is described. Results are presented on the research on using of highbog peat, charcoal, expanded perlite, overburned brick, celadon green, foam glass, flux from welding shop of a pipe-rolling plant, and rolling scrap as sorbing agents for treatment of acid wastewater containing iron.
Processing of ash and slag waste from coal-fired power plants into functional geopolymer materials
Authors: Yatsenko E A , Goltsman B M , Novikov Yu V , Trofimov S V , Yatsenko V S 
Published: July 2022

Abstract
The possibility of processing ash and slag waste formed during the combustion of coal fuel in boiler units of thermal power plants into functional geopolymer materials has been studied. The world experience of processing ash and slag waste into various materials is presented, the potential danger of ash and slag is described. The chemical composition and microstructure of ash and slag of the Apatity CHPP and the Severodvinsk CHPP-1 were studied. Raw materials of geopolymer materials have been developed, their synthesis has been carried out. The physico-mechanical properties of the obtained samples are analyzed - their density and compressive strength are determined. The process of pore formation in the production of geopolymer materials is considered.
Methods of mitigating industrial accidents at oil reservoirs.
Authors: Udartseva O V 
Published: July 2022

Abstract
This article reviews the possibility of mitigating the explosions at oil and gas facilities during the design stage. The actions suggested and verified in calculations aim to reduce the damages incurred. The authors analyze the consequences of explosions by recalculating damage areas taking into account the underlying substrate used. It is possible to reduce the equivalent explosion weight of the reflected shock wave 3 times and the length of damage areas by over 2 times changing the underlying substrate. To prevent the penetration of oil products into the soil cover, it is possible to form a square of the oil storage park from the soil, previously covered with a waterproofing layer. The need for this measure is to ensure the safety of the land. The proposed solutions will improve the economic efficiency and environmental safety of the oil storage process.
Algorithm of risk-analysis for assessing the influence of occupational conditions on personnel with investigating respiration patterns
Authors: Malyshev V S , Fedorova E V , Borovkova A M , Andreeva S A , Bayeva P N 
Published: July 2022

Abstract
The article considers the risk-analysis algorithm for assessing the occupational conditions impacts on the respiratory system of personnel, depending on the enterprise workplace localization. The algorithm for collecting information about the respiratory system condition for forming the occupational conditions’ exposure risk assessment is based on the acoustic portraits recording results for the company’s personnel respiratory cycles with bronchophonography using the hardware complex “Pattern-01”. The results of the proposed algorithm’s implementation are presented for the specific workplaces with different working conditions. The risk assessment was carried out using the “Checklist” and “What happens if ?” methods.
Developing a technique for detecting nanoscale range particles in the air of the working area in a coal preparation plant
Authors: Timofeeva S S , Zueva V A 
Published: July 2022

Abstract
The revival of the coal industry requires supplying the markets with high quality enriched coal, which is produced in coal preparation plants. The personnel of the coal industry is exposed to the dust factor and the number of occupational respiratory diseases is steadily increasing. It has been established that coal dust of the nanoscale range plays a significant role in the development of occupational lung diseases. The paper presents a method for separating nanosized particles of coal dust in the technological processes of a coal preparation plant. We have analyzed the fractional composition of coal dust selected at the workplaces of the conveyor operator in the coal receiving department, the operator of the washing units, the operator of the crushing and loading unit in the drying and heating department of the Kasyanovskaya coal preparation plant. It has been established that the initial dust sample consists of 98.94% particles with a size of 200 μm, and those dispersed in an ultrasonic bath and separated in a centrifuge contain up to 10 and 30%, respectively, nanoparticles with a size of 500 nm. It is recommended to use innovative means of prevention and provide workers with highly effective personal protective equipment.
Analysis of natural hydrological hazards in the Southern Baikal Area
Authors: Drozdova T I , Khamidullina E A 
Published: July 2022

Abstract
The increase in natural disasters associated with hydrological hazards is of concern and requires ensuring the safety of people. This paper presents an analysis of hydrological hazards in the territory of the Southern Baikal Area and gives a quantitative assessment of the frequency of severe floods with flooding of territories. In the work, we used a retrospective statistical analysis of hydrological natural hazards. Processing and generalization of statistical data for the period 2004-2020 were carried out for all watercourses of the Southern Baikal Area based on the data of the State Reports “On the state of protection of the population and territories of the Russian Federation from natural and man-made emergencies” in the relevant years, State Reports “On the state and protection of the environment of the Irkutsk Region” in the relevant years; we also used historical information published in literary sources. It has been shown that with the most unfavorable development of the flood situation, up to 11 settlements with a population of up to 38,700 people fall into the zone of possible flooding. The frequency of strong floods affecting a large area is 4.0·10-2 1/year.
Analysis of the methodology for calculating the dose of external radiation exposure of the population
Authors: Sergeeva M D , Byzov A P , Gomazov F A , Marinchenko N A 
Published: July 2022

Abstract
This work is devoted to the analysis of the methodology for calculating the dose of external radiation exposure to humans. In the course of the work, nuclear power facilities were investigated and the need for calculating radiation doses as a basis for ensuring radiation safety was determined. When solving the tasks, such research methods as system analysis, mathematical modelling, and calculation were used. The calculation of the functions of changes in internal radiation doses was carried out using the Matlab program. As a result of the work, the dependences of external radiation doses on time are obtained. The high processing speed and reliability of the data obtained allows the use of these methods in assessing the safe distance to nuclear power facilities for the living population. Also, the methods of calculating the dose of external radiation confirm their efficiency in the development of recommendations on radiation safety of the population.
Carbon dioxide emission during the production of magnesium binders based on dolomitized rocks
Authors: Averina G , Koshelev V , Orlov A , Sidelnikov D , Vakhrushev S 
Published: July 2022

Abstract
The article discusses the environmental efficiency of the production of magnesia binders based on mining waste using the technology of intensified firing process. The importance of the transition to technologies with reduced carbon dioxide emissions into the atmosphere is substantiated. The main devastating consequences caused by an excess of carbon dioxide are described from a global and local point of view. The calculation of carbon dioxide emissions due to thermal decomposition of charge carbonate minerals is given. The calculation of emissions of carbon dioxide, which is a product of combustion of fuel for the firing process, is given. The comparison of the carbon footprint of the technology of magnesium dolomite binders with the technology of Portland cement production was made. The process of release of gases from the charge during heat treatment has been studied, and the absence of release of gases containing chlorine from additives-intensifiers has been established. The conclusion about the relevance of the partial replacement of Portland cement with an alternative environmentally effective magnesium dolomite binder in the production of building materials is made.
The use of cartographic methods in assessing the risks of the impact of thermal power plants on the environment
Authors: Anopchenko L Yu , Yakutin M V 
Published: July 2022

Abstract
The article analyzes the nature and intensity of the impact of the Novosibirsk CHPP-3 on the environment. To assess environmental risks, two types of threats were identified and corresponding risk groups were identified: violation of the temperature regime of networks; violation of the hydraulic regime of networks; reduction in the quality of make-up water; breakthrough of heating networks; suction of polluted water from the near-tube space; nitrogen oxide pollution; sulfur dioxide pollution; soot pollution; ash pollution. By constructing risk maps for each risk with the subsequent addition of the obtained maps, the area of the least well-being is picked out. In it, the probability of threats being realized, and, accordingly, the risks, are the greatest. Based on the obtained maps, recommendations have been developed that may be important in the planning process of prospective development of territories affected by CHP-3. The recommendations take into account modern environmental safety strategies, in particular, environmental management methods.
Carbon footprint of forest fires in the Irkutsk region
Authors: Timofeeva S S , Garmyshev V V 
Published: July 2022

Abstract
Climate change due to the “carbon footprint”, representing the totality of all greenhouse gas emissions produced directly or indirectly by humans, animals, organizations, products and all human life processes. The carbon footprint is calculated as the carbon dioxide equivalent emitted from all sources. There is still no single methodology for accounting for the carbon footprint of forest fires. According to the information available in the literature, the carbon footprint from fires is taken into account only in the USA, while in Brazil, Indonesia, and Russia there is no such accounting. The assessment of the carbon footprint has a large error, since burning occurs in vast areas with different rock composition. The aim of this work was to develop a methodology for assessing the carbon footprint on the territory of Russia by taking into account the mass of burned forest materials and calculating gross emissions of carbon monoxide, carbon dioxide, and soot.
Effect of genotype and NPK fertilizer on seedlings of Arabica coffee and its genetic variability
Authors: Malau S , Nababan K , Sumihar S T T , Sihotang M R 
Published: July 2022

Abstract
Genetic make-up and maintenance of seedlings are influencing factors for cultivation of arabica coffee. The goal of this experiment was to study the effect of genotypes of arabica coffee and NPK fertilizer on seedlings performance and genetic variability of seedlings. A factorial experiment with randomized complete block design with three replications was conducted at experimental garden of Agriculture Faculty of Universitas HKBP Nommensen in Medan. Thirtytwo genotypes of arabica coffee and four levels of NPK fertilizer was tested. The result revealed that genotype differences were highly significant in plant height, the age at which the cotyledons open, and phenotype ratios. Genotype G3 from District Dairi performed the earliest age at the cotyledon opening (13.67 days). NPK fertilizer differences were significant to highly significant. Variance component of genotypes (VG) contributed 17.76% to total variance (VT) in ratio of plant height to age at the opening of cotyledon. Genotype showed greater variance than NPK fertilizer. Genotypic (GCV) and phenotypic coefficient of variation (PCV) varied from 1.13% to 8.17% and from 10.75% to 18.37%, respectively. It can be concluded that the role of genotype is more decisive than the role of NPK fertilizer, and genotypes showed genotypic and phenotypic variability.
Characterization of gogo rice cultivars (Oryza sativa L.) germplasm from Padang Lawas regency
Authors: Wahyuni H , Alfi R , Fatoni R B M I 
Published: July 2022

Abstract
Gogo rice is one of the food crops that has the potential to be developed because it is able to produce good productivity on dry land. The problem faced by farmers today is the lack of availability of superior gogo rice seeds. Characterization is one of the efforts to provide genes that are used for the development of sustainable technology in the assembly of new high yielding varieties. The purpose of the study was to determine the types of gogo rice and the relationship between species. This research was conducted from May-August 2021 in Padang Lawas regency using a descriptive method. All data analyzed using NTSYS version 2.02. The survey results show that there are seven types of gogo rice from Padang Lawas regency, namely Silumutpaon, Sialim, Sibobo, Siperak, Sioppaboru, Sibayur and Sibara. The dendrogram coefficient of similarity ranges from 0.17 to 0.50.
Chemical characteristics of Bio-Vermigot (vermicompost and kasgot) fertilizer with the combination of Black Soldier Fly larvae and earthworm by using cow manure and banana stem
Authors: Sebayang N U W , Nini  , Sabrina T 
Published: July 2022

Abstract
One technology that also has the potential is used in composting organic waste with earthworms or vermicomposting to protect our environment. A technology for composting municipal organic waste has been found using the Black Soldier Fly (BSF) larvae. Both decomposer agents will make the best role in the treatment of organic waste so that when it is combined with the right techniques, the decomposition process will produce a combination of bio-vermigot fertilizer. The purpose of this study was to produce a combination of vermicompost and kasgot (bio-vermigot) with earthworms and BSF larvae. The method uses Factorial Randomized Block Design with DMRT test at the 5% level. The pH in almost all treatments was neutral (6.3-8.2), the water content in all treatments exceeded the national standard (more than 25%), C-organic according to the standard only in the treatment without decomposer agents (20%), The content of Nitrogen in 100% earthworm with cow manure (2.45%) and 100% BSF larvae with cow manure (2.05%). The combination of decomposer agents that can produce bio-vermigot with the best Phosphorus content is 25% earthworms: BSF larvae 75% with banana stem waste, Potassium and C/N ratio in all treatments not eligible with national standards.
An analysis of morphological characters of two shallot varieties (Allium ascalonicum L.) using true shallot seed in the highlands with different cultivation methods to support sustainable agriculture
Authors: Hasanah Y , Ginting J , Kusriarmin A M 
Published: July 2022

Abstract
The morphological character of shallot using TSS (True Shallot Seed) in the highlands is greatly affected by plant cultivation methods related to fertilization factors, growth regulators, and seed spacing to support sustainable agriculture. This study aims to evaluate the morphological and physiological characters of two TSS-originated shallot varieties by applying different methods. The research is conducted on community land in Sempa Jaya, Berastagi, with an altitude of 1412 meters. A factorial randomized block design was established with two factors and three replications in a field experiment. The first factor is seed supplier recommendation cultivation method, multiple production recommendation cultivation method, modification of seed supplier recommendation cultivation method, and modification of multiple production recommendation cultivation method. The second factor is the variety (Sanren F1 and Lokananta). Lokananta variety was identified as having better growth than Sanren F1. The seed supplier recommendation cultivation method is better than the rest. The interaction between varieties and cultivation methods has no significant effect on plant growth.
Foliar stomata characteristic of fabaceae family in University of Sumatera Utara (USU) green space
Authors: Susilowati A , Ginting I M , Kaban N S , Rachmat H H , Iswanto A H , Sucipto T 
Published: July 2022

Abstract
The existence of green open space becomes important along with the decline in environmental quality. The University of Sumatera Utara (USU) campus, as one of the city’s green open spaces, is expected to be able to minimize negative impacts of increasing levels of pollution. For this reason, it is necessary to select tree species to maximize the function of green open spaces. The purpose of this research was to identify the Fabaceae family’s stomata characteristics, which included the type, length, thickness, and its density. To determine stomata characteristics, the epidermal layer of the leaves was perforated using nail polish. The results showed that all of observed trees had paracytic stomata with a random distribution pattern. The longest stomata was found in Erythrina crista that reached 20.15 μm in length, while the shortest stomata was found in Intsia bijuga and reached 12.36 μm in length. Tamarindus indica had the widest stomata, reaching 2.59 μm in width, while Pithecellobium dulce variegate have had smallest, at 7.74 μm in width. Peltophorum pterocarpum had the highest density at 718.68μm, while Leucaena leucocephala have had lowest density at 94/ μm2.
Variation in yield attributing traits and genetic parameters estimates of some advanced promising lines of upland rice (Oryza sativa L.) grown under shade conditions
Authors: Sadimantara G R , Oktavianty F D , Febrianti E , Nuraida W , Usman  
Published: July 2022

Abstract
Efforts to develop upland rice need to be supported by plant breeding programs by assembling superior upland rice varieties. Eight advanced promising lines developed through a hybridization breeding program and two check varieties were used to study. The study conducted in Langgea Village (4°3’24”S and 121°27’59”E), Ranomeeto District, South Konawe Regency, Southeast Sulawesi. The experiment arranged in a split-plot design using randomized complete block (RCB) and three replications. Shade treatments arranged as main plots and the different of upland rice promising lines as subplots. The parameters observed were included vegetative and generative character. The results showed that the genotypes significantly differed in grain yield and yield attributing traits. The estimation of genetic parameters of some upland rice promising lines for grain yield and yield attributing traits indicated that total grain per panicle and leaf area had high both genotypic and phenotypic coefficient variance. There were genotypic diversity values on the appearance of some upland rice promising lines at a low light intensity, which had the highest value on the total grain per panicle (282.13) and the lowest value on the grain weight per clump (1.02).
Effectiveness of NPK fertilizer on the growth of several new superior upland rice lines (Oryza sativa L.) crosses from Southeast Sulawesi
Authors: Rismawati  , Sadimantara G R , Usman  , Leomo S , Erawan D , Samai S 
Published: July 2022

Abstract
Rice is the primary source of carbohydrates in Indonesia. The rice demand increases every year and needs to fulfil sustainably. Effective fertilizer treatment is very important. The study aimed to determine the effectiveness and the best dosage of NPK on the growth of several superior upland rice lines from Southeast Sulawesi. The research was conducted in Field Experiment Faculty of Agriculture, Halu Oleo University. The research design in factorial randomized block design (RBD) consists of two factors. The first factor was the rice cultivar different, i.e., GS11-2 (G1), GS12-2 (G2), GS44-2 (G3), GS16-2 (G4), and Lipigo 4 as a check variety or control. The second factor was the different dose of NPK, i.e., without fertilizer as a control, 4 g plant-1, and 8 g plant-1. The observed parameter is plant height (cm), leaf number and tiller number. The observational data were analysed using ANOVA dan further using DMRT tests. The results showed NPK fertilizer was effective on the growth of several upland rice lines in the parameter of plant height, leaf number, and tiller number. The four lines tested showed that these lines had the potential to become new superior upland rice varieties.
Analysis of morphological responses of drought stress oil palm in nursery phase
Authors: Pangaribuan I F , Akoeb E N 
Published: July 2022

Abstract
Oil palm is one of drought sensitive crops. Therefore, drought tolerance and water-use efficient oil palm planting material are needed to produce optimally in a climate-changing condition. One of the methods to see plant responses to drought in the nursery stage is using the Fraction to Transpiration Soil Water (FTSW) method. This method is based on observations of plant transpiration conditions. FTSW method describes the soil and plant moisture condition based on the amount of water transpired by plants. This research arranged with Randomized Block Design (RBD) replicated three times with two factors (three FTSW levels such as 0.1; 0.4; and 0.15) and six oil palm varieties such as DxP Simalungun, DxP PPKS 540, DxP Yangambi, DxP PPKS 239, DxP PPKS 718 and DyxP Dumpy and aimed to determine plant response to drought stress. The result showed that FTSW0 (permanent wilting point) was obtained on day 40. Drought stress treatment (FTSW 0.4 and 0.15) showed significant differences in the parameters of plant height and number of leaves. Among all oil palm varieties, DyxP Dumpy, DxP Simalungun, and DxP PPKS 239 represented a better performance than DxP PPKS 540, DxP Yangambi and DxP Langkat.