bluuebunny/crossref_metadata_2025_split huggingface dataset:
Disinfection of drinking water with ozone by the method of electrodispersion
Authors: Muzafarov Sh M , Babaev A G , Kilichov O G , Batirova L A 
Published: December 2021

Abstract
This article analyzes the existing methods for disinfecting drinking water with ozone and identifies their disadvantages. The substantiation of the method of water disinfection with ozone using electrodispersion is given. The description of the technological scheme of water disinfection using the method of electrodispersion is given. The description of the design of the electric spray is given. The results of production tests of a device for water disinfection on the water of open reservoirs and artesian wells are presented.
Arenothiophenes in oil basic sulfoxides synthesis and oxidation receiving sulfoxides from oil
Authors: Sh Bozorova L , Qurbanov M J , Pirimov O J , Tursunov O 
Published: December 2021

Abstract
Some of the sulfide compounds were converted to sulfoxides by the action of a 30% solution of hydrogen peroxide on the acid catalyst of a molecule of bicyclic sulfide organic compounds in the paraffin distillate of the oil. The resulting sulfoxides were treated with 70% sulfuric acid and sulfate compounds of sulfoxides were obtained. In order to confirm the composition and structure of these compounds, chemical reactions of the corresponding sulfoxides on the basis of benzothiophene derivatives were carried out.
Study on the traveling magnetic field water purifier
Authors: Berdyshev A S , Djumabayeva Z Z , Abdullaev A A , Mussabekov A 
Published: December 2021

Abstract
The article discusses a new technology for Uzbekistan of purifying drinking water from mechanical particles. This is achieved due to the generated traveling magnetic field of the electric winding wound on the metal cylinder. An analysis of the resulting mechanical attraction forces in the space of a cylindrical purifier is given. Mathematical expressions are given to calculate these forces. The analysis of the obtained graphs of temporal and spatial characteristics is presented. The values of currents allow effectively implementing the process of water purification from mechanical impurities is determined.
Study on the determination of the parameters of the electric purifier
Authors: Berdyshev A S , Djumabayeva Z Z , Abdullaev A A , Mussabekov A 
Published: December 2021

Abstract
The article is devoted to the determination of the parameters on which the filter performance depends on the hydrodynamic, electromagnetic and geometrical parameters of the fluid and pollution. These include fluid viscosity and flow rate, magnetizing force, particle size of contamination, gap height, and the distance between the turns.
Road Intersection Improvement – Main Step for Emission Reduction and Fuel Economy
Authors: Khakimov Sh , Rajapova S , Amirkulov F , Islomov E 
Published: December 2021

Abstract
This article demonstrates the changes made in the intersection model using PTV Vissim have an impact on reducing an amount of GHG and fuel consumption. One of the most problematic intersections in Namangan, Uzbekistan, was selected and traffic flow during peak hours was studied in order to prepare the simulation of the intersection. The article offers two types of solution as so to lessen the amount of toxic gases and fuel consumption. In the first solution, the situation was improved by optimizing the phase of the traffic light and by changing the cycle duration. The second solution was to reduce the amount of toxic gases and fuel consumption from vehicles by changing the geometric dimensions of the intersection. After the implementation of both solutions, the current state of LOS was raised from D to A level.
Effect of humate substances on biological activity and physical properties of eroded soils: a case study of Uzbekistan
Authors: Kamilov B S , Makhkamova A SH , Sodikova G S , Kodirov E T 
Published: December 2021

Abstract
Worldwide, approximately 3 million hectares of land degraded due to erosion, and every minute approximately 44 hectares of agricultural land are being lost. In fact, agricultural area situated in arid zone is vulnerable to erosion, which leads to decline in agricultural productivity due to low quality soil. Evidently, the vital activity of microorganisms is interlinked with the assimilation of minerals by plants in irrigated lands, that is, the production of high and quality crops. Therefore, this research was intended to see effect of humate substance on biological activity and physical properties of eroded soils, that is, investigate how humate substance impact on overall structure of soils in the Pskent district of Tashkent province. The results extracted from field and laboratory experiments showed that poultry manure in moderately eroded soils and humus and poultry manure variants in washed-out soils ranged from 2.2x107 KHB/g to 7.5-3.0x106 KHB/g. Oligonitrophilic microorganisms were found to be the same in all variants. Micromycetes were observed in humus variants with an average erosion of 2.2x104 KHB/g, and in washed-out soils of 7.5x103 KHB/g. The amount of actinomycetes in samples 3 and 4 was 7.5x103 KHB/g per 1 gram of soil, while in samples 1, 2, 5 and 6 they were not found at all. This means that the amount of actinomycetes was slightly reduced in summer, but the relative changes between the options were 1.1-8.3x108 KHB/g in washed-out soils with moderate erosion in less washed soils, and 7.5-8.3x107 KHB/g in moderately washed and washed soils. Furthermore, influence of humic biofertilizers, organic fertilizers on general physical properties of eroded typical gray soils was also studied. Accordingly, the effect of fertilizers in the control variant was 1.30g/cm3, followed by the variant with the use of mineral fertilizers humate 1.27g/cm3, and the application of poultry manure 1.29g/cm3. In moderately eroded soils, the values were found to be 1.40 g/cm3, 1.35 g/cm3, 1.33 g/cm3, respectively, and 1.25 g/cm3, 1.31 g/cm3, 1.29 g/cm3 in washed out soils.
Vilt resistance of cotton varieties while inoculation with various isolates of the fungus Verticillium dahliae kleb. in an artificial climate of Uzbekistan
Authors: Usmanov S A , Mashrapov KH T , Khudarganov K O 
Published: December 2021

Abstract
This article addresses the studies on the resistance of cotton varieties to Verticillium dahliae Kleb on an artificial infectious background. It is shown that resistance indicators depend on the origin of varieties. V.dahliae isolates isolated from varieties C-6524, Namangan-77, Barkhayot, Shodiyona, Omad and C-8290 showed different virulence; isolates allocated from varieties C-6524, Namangan-77, Barkhayot, Shodiyona and Omad showed the highest virulence.
Scientific and practical fundamentals of growing cabbage (Brassica capitata lizg.) in Uzbekistan
Authors: Shokirov A J , Lapasov S S , Shokirov K J 
Published: December 2021

Abstract
At present, scientific research is underway to further develop vegetable growing in the secondary crop, in particular to further increase the yield and quality of white cabbage, to select a system of planting time-sowing scheme that maximizes the biological productivity of varieties, and to apply the most optimal standards of fertilization and irrigation. In this regard, the urgent task remains to determine the optimal varieties of cabbage that can be grown in repeated crops, their optimal planting scheme, timing, development and implementation of optimal standards for each variety of mineral fertilizers and irrigation, and its solution is large-scale throughout the country. Besides that a number of problematic issues are addressed, which could allow to get high and high-quality harvest of white cabbage in repeated sowing in grain-free areas.
Possibilities of drip irrigation of vegetables in agricultural land of Uzbekistan
Authors: Ilkhamov N M , Kurbanov I G , Kh Aliev J , Ganiev S E , Toshpulatov Ch V 
Published: December 2021

Abstract
Reducing water consumption in crop irrigation in the world agriculture, studying soil moisture and water consumption by different irrigation methods, improving soil agrophysical properties and increasing productivity, as well as increasing the productivity of vegetable crops by various irrigation methods and improving phytosanitary conditions (weed and pest density, disease). Extensive research is being conducted to assess the level of one of the most pressing issues in agriculture is the development, improvement and widespread introduction of cost-effective irrigation methods in the spring and summer planting and care of vegetable crops in conditions of water scarcity.
Simple superphosphate by two-stage acid treatment of phosphate raw materials
Authors: Sherkuziev D 
Published: December 2021

Abstract
The distinguishing feature of the proposed flow method before the classical (chamber) method is that the entire production cycle of natural phosphate processing is carried out in two stages. At the first stage, the phosphorite is treated with a stoichiometric flow rate of concentrated sulphuric acid (at least 93%), under conditions of complete decomposition of phosphorite to form phosphoric acid and crystals of anhydrite (calcium sulfate). The reaction temperature is 122 °C. In the second stage, the resulting concentrated solution of phosphoric acid in a mixture with sulphur is involved in a reaction with an additional input of phosphorite, which is the basis for the mechanism of chemical formation of monocalciumphosphate and granulation of superphosphate mass. The processes for neutralizing phosphoric acid on monocalciumphosphate and for granulating the product by coagulation are combined in one apparatus. The drying stage of the product is excluded from the scheme.
Constituents of Leachate Generation and Migration in Ministry of Agriculture Forest Nursery Open Dumpsite in Jos Plateau State, Nigeria
Authors: Wuave Terwase 
Published: December 2021

Abstract
The constituents of leachate generation and migration in ministry of agriculture nursery open dumpsite in Jos Plateau were determined. Leachate extraction from solid waste (SW) was carried out. Test dumpsite soil with different elevations. Elevations were with uniform density. Representative solid waste dumpsite soil sample were collected from one dumpsite. The collected SW soil subjected to column experimental test, results showed physicochemical parameters (pH, TSS,TDS and EC) range of descriptive value in terms of histogram values of 5.66 – 8.23(1.0m to 1.5m depth) pH, 90.65 – 1125.96mg/l (0.5 to 2.0m depth) TSS, 17.78 – 156mg/l (1.5 to 0.5m depth) TDS, 9.02 – 80.01 us/cm and principal component summary analysis. The histogram and principal component summary values increase. Alkalinity has highest concentration, followed by hardness which has least, BOD5 has lower values, followed by COD which has higher value, Cl−increasing, S04
2-, N03 values increases, P04 in waste decreases with increase time and depth. The Na+, increasing K+ second to Na+, increases, Mg2+ and Ca2+ in MSW increases as time and depth proceed. The results of Cu, Fe, Cd and Pb in histogram had moderate to high values. All were examined for physicochemical, alkalinity and hardness, BOD5, COD, anions, cations and heavy metals to study the seasonal variation of significant parameters. The results from the leachate analysis were used as a tool to identify the processes and mechanisms affecting the soil and water chemistry from the study area.
Diseases that provoke fungi in leguminous cereals and measures of fighting against them
Authors: Rakhmanov J H , Gulmurodov R A , Tukhtamishev S S , Soatov T T , Gulmurodova Sh 
Published: December 2021

Abstract
Many crop losses have been observed in all states due to diseases in which fungi come from leguminous grain crops such as mung bean, peas and beans. In particular, this situation was noted in scientific observations conducted in several regions of our republic where legumes are grown. Fuzariosis, which occurs in leguminous grain crops, has been studied in studies on root rot, anthracnosis, ascochitosis, flour-dew and other fungi diseases, at what time of their appearance, spread, development and damage to the crop. From these diseases, root rotting in chickenpox and fuzariosis, as well as anthracnosis in mung bean and beans, root rot in fuzariosis, rapid spread and development of flour-dew diseases in connection with weather conditions have been identified.
Study on working bodies of the soil preparation machine for sowing potatoes
Authors: Mirzaev B , Mamatov F , Kodirov U , Shirinboyev X 
Published: December 2021

Abstract
The purpose of the study is to substantiate the parameters of the guide knife and the loosening pointed leg of the machine. The basic principles and methods of classical mechanics, mathematical analysis and statistics were used in this study. Theoretical studies were carried out to determine the parameters of the guide knife and the loosening pointed leg of the machine. It is established that to ensure the required value of the crest height with minimal energy consumption, the height and length of the guide knife should be 8 and 15 cm, respectively, the angle of the knife blade to the horizon - 30º, the longitudinal distance from the toe of the ploughshare body of the knife toe – 13 cm. To ensure the required crumbling of the soil, the width of the pointed loosening paw should be 15 cm.
Experimental determination of the wave height of the base and yarns in the tissue and a new method for measuring the tissue thickness without contact
Authors: Daminov A , Doniyorov B , Doniyorova M , Kosimov D , Sultonbekova Z , Nalibaev A 
Published: December 2021

Abstract
In many spinning and weaving processes, fibers and threads are bent. To be more precise: in the textile industry there is no technological process in which fibers, threads or textiles do not pass through a curved surface. Therefore, this article highlights the research work on a new method of contactless determination of the wave height and thickness of the warp and weft threads in the fabric using the capabilities of information and communication technologies. Experiments of research work are considered on the example of crêpe de Chine fabric.
Morphological and molecular identification three species Teladorsagia (Nematoda: Trichostrongylidae) in sheep, Uzbekistan
Authors: Kuchboev A , Amirov O , Soliyeva G , Karimova R , Sabirov H , Abramatov M , Kakhramanov B 
Published: December 2021

Abstract
Comparative studies of three species T. circumcincta, T. trifurcata and T. davtiani, which are preliminarily different morphs of the same species, have been carried out in this paper. Insignificant differences in morphological sizes and characters between males were identified and fragments of ITS-2 ribosomal DNA of three species of the genus Teladorsagia were investigated. There were no sequence differences between T. circumcincta and T. trifurcata. Minor differences were noted between T. circumcincta and T. davtiani species at the level of 0.8%. With complete similarity between T. circumcincta and T. trifurcata and a low percentage of differences between T. circumcincta and T. davtiani in different specimens, they represent different morphological forms of one species of T. circumcincta.
UV treatment of agricultural plants in territories subject to salination of soil
Authors: Anarbaev A , Tursunov O , Kodirov D , Tasheva U , Davronov Q , Davirov A 
Published: December 2021

Abstract
An assessment of the influence of electrotechnology of ultraviolet irradiation of seeds and pre-sowing soil treatment and the creation, on their technological basis, of management and control of salt and nutritional regimes of irrigated soils has been carried out. Relative yield of field crops versus the concentration of toxic salts in the soil solution at full moisture capacity are shown. By results of experimental researches acting of UV irradiation on the amount of ammonifying bacteria in the soil under cotton for increasing the accumulation of the most mobile nitrate forms of nitrogen are defined.
Study on microwave moisture measurement of grain crops
Authors: Kalandarov P I , Mukimov Z , Abdullaev Kh , Avezov N , Tursunov O , Kodirov D , Toshpulatov N , Khushiev S 
Published: December 2021

Abstract
This article discusses the possibility of implementing the microwave method for controlling the moisture content of agro-industrial products, which allows it to be used to control technological processes in grain processing industries and to control materials in free space, converting the parameters of waves passed through the material’s wave into an electrical signal. A functional diagram of the developed moisture meter is proposed, on the basis of the method, its electrodynamics’ characteristics are determined. Experimental data was obtained for samples of cotton seeds with specified moisture values. A method for measuring grain moisture in continuous production have been proposed, which gives a possibility to reduce the components of the measurement error caused by the uneven distribution of moisture in the grain, the inhomogeneity of the material in terms of density and temperature.
Determinants of Respirable Quartz Exposure Concentrations Across Occupations in Denmark, 2018
Authors: Boudigaard Signe Hjuler , Hansen Karoline Kærgaard , Kolstad Henrik , Kromhout Hans , Schlünssen Vivi 
Published: December 2021

Abstract

Background
High concentrations of respirable quartz have been reported from workers in construction, foundries, and quarries. Current exposure concentrations in prevalent but presumably lower exposed occupations have been less examined. We aimed to quantify current exposure concentrations of respirable dust and quartz across prevalent occupations and to identify determinants of respirable quartz exposure across these occupations.

Methods
One hundred and eighty-nine full-shift personal samples of respirable dust of workers within 11 occupations in Denmark were sampled during 2018. Respirable dust was determined gravimetrically and analysed for quartz content with infrared spectrometry. Determinants for respirable quartz exposure, i.e. use of power tools, outdoor or indoor location, and percentage of quartz in respirable dust, were analysed in linear mixed effect models.

Results
The overall geometric means (geometric standard deviations) for respirable dust and quartz were 216 µg m−3 (4.42) and 16 µg m−3 (4.07), respectively. The highest quartz concentrations were observed among stone cutters and carvers [93 µg m−3 (3.47)], and metal melters and casters [61 µg m−3 (1.71)]. Use of power tools increased exposure concentrations of quartz by a factor of 3.5. Occupations explained 27%, companies within occupations 28%, and differences between workers within companies within occupations 14% of the variability in quartz concentrations. Thirty percent was due to day-to-day variability in exposure concentrations. In total, 19% of the variation in quartz concentration could be explained by type of tool, indoor/outdoor location, and percentage of quartz in respirable dust.

Conclusion
Current exposure concentrations are generally low, but some occupations in this study had average exposure concentrations to respirable quartz above the ACGIH threshold limit value of 25 µg m−3. Preventive measures to lower excess risk of quartz-related diseases among these workers are still needed. In terms of preventive strategies, use of power tools and quartz content of used materials were identified as main determinants of exposure. Lowering of exposures will be most efficient when focussed on these major determinants, e.g. tool dust control with water, dust extraction, and use of low quartz content materials.
The Wildland Firefighter Exposure and Health Effect (WFFEHE) Study: Rationale, Design, and Methods of a Repeated-Measures Study
Authors: Navarro Kathleen M , Butler Corey R , Fent Kenneth , Toennis Christine , Sammons Deborah , Ramirez-Cardenas Alejandra , Clark Kathleen A , Byrne David C , Graydon Pamela S , Hale Christa R , Wilkinson Andrea F , Smith Denise L , Alexander-Scott Marissa C , Pinkerton Lynne E , Eisenberg Judith , Domitrovich Joseph W 
Published: December 2021

Abstract
The wildland firefighter exposure and health effect (WFFEHE) study was a 2-year repeated-measures study to investigate occupational exposures and acute and subacute health effects among wildland firefighters. This manuscript describes the study rationale, design, methods, limitations, challenges, and lessons learned. The WFFEHE cohort included fire personnel ages 18–57 from six federal wildland firefighting crews in Colorado and Idaho during the 2018 and 2019 fire seasons. All wildland firefighters employed by the recruited crews were invited to participate in the study at preseason and postseason study intervals. In 2019, one of the crews also participated in a 3-day midseason study interval where workplace exposures and pre/postshift measurements were collected while at a wildland fire incident. Study components assessed cardiovascular health, pulmonary function and inflammation, kidney function, workplace exposures, and noise-induced hearing loss. Measurements included self-reported risk factors and symptoms collected through questionnaires; serum and urine biomarkers of exposure, effect, and inflammation; pulmonary function; platelet function and arterial stiffness; and audiometric testing. Throughout the study, 154 wildland firefighters participated in at least one study interval, while 144 participated in two or more study interval. This study was completed by the Centers for Disease Control and Prevention’s National Institute for Occupational Safety and Health through a collaborative effort with the U.S. Department of Agriculture Forest Service, Department of the Interior National Park Service, and Skidmore College. Conducting research in the wildfire environment came with many challenges including collecting study data with study participants with changing work schedules and conducting study protocols safely and operating laboratory equipment in remote field locations. Forthcoming WFFEHE study results will contribute to the scientific evidence regarding occupational risk factors and exposures that can impact wildland firefighter health over a season and across two wildland fire seasons. This research is anticipated to lead to the development of preventive measures and policies aimed at reducing risk for wildland firefighters and aid in identifying future research needs for the wildland fire community.