bluuebunny/crossref_metadata_2025 huggingface dataset:
The effect of psychrotolerant methylotrophic bacteria on the growth, pigment content and accumulation of protein and carbohydrates in the microalgae Chlorella vulgaris
Authors:   Institute of Ecology and Genetics of Microorganisms of the Ural Branch RAS, Sharavin Dmitry Y. , Belyaeva Polina G. ,   Institute of Ecology and Genetics of Microorganisms of the Ural Branch RAS, Tseshchinskaya Ekaterina M. ,   Institute of Ecology and Genetics of Microorganisms of the Ural Branch RAS, Galyamina Valentina V. ,   Institute of Ecology and Genetics of Microorganisms of the Ural Branch RAS
Published: December 2024

The study is devoted to the effect of six psychrotolerant methylotrophic bacteria isolated from samples of moss-lichen community and water bodies, collected at the territory of Antarctic oases and mountainous region of the Altai republic on the growth, pigment content and accumulation of protein and carbohydrates by the green microalgae Chlorella vulgaris at temperatures of +10°C and +20°C. Standard growth curves of chlorella without bacterial suspension at +20°C and +10°C reached the stationary growth phase on days 5-6 and 9, respectively, reaching 30 and 16×106 cells/ml. It was found that five of the six psychrotolerant strains had no effect on the number of chlorella cells, pigment content and protein concentration when co-cultured with microalgae at the temperature of +10°C. A positive effect was found only for xPrg3, in particularly on the carbohydrate concentration. A negative effect of Bel19 on the cell number and pigment content at +10°C was also found. Inoculation of chlorella under the temperature of +20°C with same bacterial strains lead to increase in: cell number with the strain xPrg3, chlorophyll a with Bel19 (119% of the control), carbohydrates with the isolate xPrg17 and intracellular protein content with Al5, Bel19, Bel62 and xPrg17.
Study of polymorphism of DNA repair genes in the formation of pre-sposition to the development of triple negative breast cancer in women
Authors:   Federal Research Center of Coal and Coal Chemistry, Siberian Branch, RAS, Titov Ruslan A. ,   Kemerovo state university, Glushkov Andrey N. ,   Federal Research Center of Coal and Coal Chemistry, Siberian Branch, RAS, Torgunakova Anastasia V. ,   Federal Research Center of Coal and Coal Chemistry, Siberian Branch, RAS,   Kemerovo state university, Zakharova Yana A. ,   Federal Research Center of Coal and Coal Chemistry, Siberian Branch, RAS,   Kemerovo state university, Мaruschak Anna V. ,   Federal Research Center of Coal and Coal Chemistry, Siberian Branch, RAS, Mininа Varvara I. ,   Federal Research Center of Coal and Coal Chemistry, Siberian Branch, RAS,   Kemerovo state university
Published: December 2024

The study involved 682 women of Russian nationality living in Kemerovo oblast of Russia, including 213 patients with triple-negative breast cancer and 249 women of a similar age with no signs of cancer. Comparative analysis of polymorphic variants of DNA repair genes APEX1 444T>G (rs1130409), ATM 5557G >A (Ars180151), hOGG1 977C>G (rs1052133), XPD 2251Т>G (rs13181), XPG 3310G>C (rs17655), ADPRT 2285 T>C (rs11610) in patients with triple-negative breast cancer and individuals without cancer living in the same area was performed. Analysis of single-locus effects showed significant associations between the risk of breast cancer and variants of the XPG 3310G>C gene (rs17655) (OR = 0.64, CI: 0.47-0.87, p = 0.004) in the overall group and (OR = 0.68, 95% CI: 0.49 -0.94; p = 0.019) in the non-smoking group, and the XPD 2251T>G gene (OR = 0.30, 95% CI: 0.11-0.78; p = 0.011) in the smoking group. MDR analysis of intergenic interactions showed that the XPD 2251T>G and APEX1 444T>G, XPG 3310G>C and ATM 5557G>A genes closely interact and mutually increase the risk of developing breast cancer in women.
Salting-out and salting-in ability of non-transition metals nitrates and chlorides to ethoxylated nonylphenols
Authors:   Perm State University, Shilykovskaya Darya O. , Elokhov Aleksandr M. ,   Perm State University, Smolina Yuliya V. ,   Perm State University
Published: December 2024

The influence of nitrates and chlorides of non-transition metals and ammonium on the salting out of neonol AF 9-10 from aqueous solutions was studied. It has been shown that nitrates and chlorides of monovalent metals have a mainly salting-out effect, while nitrates of di- and trivalent cations increase the separation temperature of aqueous solutions of neonol AF 9-10. Based on the study of phase equilibria in the system ammonium nitrate – neonol AF 9-10 – water in the temperature range 25–80°C, option 5 of the generalized scheme of topological transformation of phase diagrams inorganic salt – ethoxylated surfactant – water with temperature changes was experimentally confirmed.
Regular on-site observations in strict nature reserves: the problem of data practical usage
Authors:   Federal State Budgetary Institution "Basegi State Reserve", Semenov Viktor V.
Published: December 2024

The article provides a brief description of the traditional (Soviet) form of organizing scientific research in nature reserves, which has largely retained its relevance today. In addition to the obvious advantages of this traditional system, the author draws attention to its significant objective disadvantage – the difficulty of practical implementation of the achievements of protected scientists, primarily related to the narrow territorial focus of research on protected areas. Using the example of the results of research on hunting and commercial animals of the Basegi Reserve, a number of possible options for active integration and practical application of the achievements of reserve scientists in socially demanded areas are proposed and analyzed. In particular, the possible role of conservation science in the hunting economy of adjacent territories, environmental education of the general population on the Internet, in the development of cognitive eco-tourism, education, and television is analyzed. Summarizing his own long-term observations and attempts to implement the interaction of protected science with society in these areas, the author draws preliminary conclusions about the possible real number of beneficiaries – people whose lives will acquire significant positive changes as a result of using the achievements of protected scientists.
Bioremediation in situ of oil-contaminated soils in the Polaznenskoe oil field area
Authors:   Perm State University, Egorova Darya O. , Tashkinov Evgeny V. ,   Perm State University
Published: December 2024

The article presents the results of field research on the in situ remediation of oil-contaminated areas using phytoremediation and bioaugmentation technologies. The research was conducted in the summer-autumn period at the Polaznen oil field near the village of Zuyat in the Dobryansky city district of the Perm region. Phytoremediation and bioremediation technologies are considered to be the safest for the environment and the most cost-effective from an economic standpoint. The application of the bioremediation product "Biorec-Ra" and the sowing of seeds of black medic (Medicago lupulina L.), meadow fescue (Festuca pratensis Huds.), and perennial ryegrass (Lolium perenne L.) helped to reduce the concentration of the pollutant (petroleum hydrocarbons) to below the MAC in the first month of the experiment. Over the following month and a half, the concentration of petroleum hydrocarbons continued to decrease. This change in pollutant content was significantly different from the change in the same indicator in the control soil. Thus, the applied phytoremediation and bioremediation technologies have shown promise for this particular area.
The main mathematical approaches for modelling impurity scattering processes in atmospheric air
Authors:   Udmurt State University, Semakina Alsu V.
Published: December 2024

Mathematical modeling allows, from a theoretical point of view, to explain the quantitative and qualitative characteristics of the state of atmospheric air, solve diagnostic and prognostic problems, and fill in the missing information about the nature of the scattering of impurities in atmospheric air. During the study of atmospheric processes, various approaches were formed in their assessment and modeling. The purpose of this work is to review and analyze existing approaches to mathematical modeling of the processes of scattering of impurities in the atmosphere. To achieve this goal, the following tasks were formulated: identification of classification criteria for the formation of classifications of mathematical models; analysis of existing approaches to mathematical modeling, including using classification criteria. As a result of the conducted research, the classification of existing mathematical models was carried out, conclusions were drawn about the possibilities of using mathematical models in assessing scattering processes for different territories. The use of models based on the analytical solution of the diffusion equation and Gaussian models is acceptable only for small areas. Within the framework of characterizing the state of atmospheric air in large areas using mathematical modeling methods, gradient transport models are recommended, taking into account the chemical activity of substances adapted to determine the processes of impurity transfer over territories of different areas.
Dynamics of plant species number in postpyrogenic phytocoenoses of the Kerzhensky reserve
Authors:   Lomonosov Moscow State University, Kadetov Nikita G. , Urbanavichute Svetlana P. ,   Kerzhensky Natural State Reserve, Gnedenko Angelina E. ,   Institute of Geography, Russian Academy of Sciences, Andryushkevich Ekaterina N. ,   Lomonosov Moscow State University
Published: December 2024

An overview of changes in the herb-shrub layer number of species on permanent sample plots established in the Kerzhensky Reserve after the wildfires of 2010 is provided. It is shown that the nature of the change in this indicator is influenced by both the type of fire and the shape of the mesorelief to which the permanent sample plot is confined. The presence of maxima and minima in the number of species was noted. The similarity in the type of changes in the number of species for areas with crown and intense ground fires is shown.
Bioremediation technologies of oil-contaminated soils and subsoils: patent review
Authors:   Perm State University, Simonov Vladislav E. , Lekontseva Tatyana A. ,   Perm State University
Published: December 2024

The paper presents an analysis of the main directions of patenting technologies for bioremediation of soils and soils, which have been confirmed by oil pollution. Methods of soil and water purification using microorganisms and plants are considered. The main aspects of bioremediation in the zone of action of oil pollutants are highlighted. The main attention is paid to the method of using plants in the purification of soils contaminated with petroleum products. The classification of phytormediation and the features of the action of the above purification methods are given. The main advantages of phytoremediation as a method of application for purification in oil pollution are noted. The main species, families of plants and the frequency of their applicability in cleaning are analyzed. The mechanism of action of phytore mediation technologies is determined. The analysis of preparatory measures for conducting phytotesting is carried out. The basic properties of plants as heavy metal scavengers are taken into account.
Pollution of Tyya River and Lake Baikal littoral surface waters in the zone of influence of waste water from the Severobaikalsk Town wastewater treatment facilities: assessment by geochemical method
Authors:   Limnological Institute of RAS SB, Chebykin Eugene P. , Kulikova Natalya N. ,   Limnological Institute of RAS SB, Likhoshway Yelena V. ,   Limnological Institute of RAS SB, Suturin Alexander N. ,   Limnological Institute of RAS SB
Published: December 2024

The composition of chemical elements from the Tyya River, wastewater from water treatment facilities (WTF) in Severobaikalsk town and from surface waters of Lake Baikal littoral in the zone of influence of polluted riverine waters were studied using the ICP-MS method. It is found out that water fraction of WTF waste waters from Severobaikalsk town into total riverine drainage of the Tyya R. is very low (~0.04%) due to a great water content of the river itself. However, geochemical contributions by several elements are rather considerable (Cl – 29%, P – 7,3%, Na – 4,2%, Zn – 2,7%). The influence of the Tyya R. polluted waters onto the adjacent littoral of Lake Baikal is limited by the sector of 200-300 m from water edge in frontal direction (water fractions of riverine waters are 26-4%), however, in the coastal zone it extends out of the delta. Among the studied objects, maximal geochemical effect of WTF waste waters from Severobaikalsk town concerns the Tyya R. and coastal water in Lake Baikal littoral in 550 m rightward from the mouth of main duct, where water fraction of riverine waters is maximal (86%). In these objects, Summary Geochemical Fraction (SGCF) of waste waters calculated by 41 informative chemical elements was 53 and 35%, respectively. At other stations in Lake Baikal littoral in the coastal zone, SGCF is not great – 2.8-7.5%. In the sector of 200-300 m from water edge, SGCF is comparable with the coastal zone – 1.5-8.1%. In the sectors of 500-600 and 800 m from the water edge, SGCF is minimal – 0.07-0.21%. In WTF waste waters from Severobaikalsk town, exceeding of regulations by P (69 MAC), Mn (6 MAC), Zn (3.4 MAC), Cu (2.1 MAC), Mo (1.7 MAC) and V (1.3 MAC) was detected.
Erosion Processes and the Stability of the Geological Environment in the Dam Abutement of the Yumaguzinskiy Reservoir on the Belaya River (Republic of Bashkortostan)
Authors:   Bashkir State Agrarian University, Zagitova L. R. , Khaidarshina E. T. ,   Bashkir State Agrarian University, Akhmetova Y. I. ,   Bashkir State Agrarian University, Andreeva Y. S. ,   Bashkir State Agrarian University, Latipov A. Z. ,   Bashkir State Agrarian University
Published: December 2024

The influence of the Yumaguzino reservoir on the state of the geological environment and erosion processes in the area of the dam left-bank abutment was studied. This site is composed of the Devonian karst limestone, which can reduce the erosion resistance. Observations of filtration processes in the body of the dam allow us to determine changes in hydraulic gradients, and based on this, to conclude about the stability of the soil mass in this area. The steep slopes in the area of the left-bank abutment can provoke landslide processes. To assess the possible danger, it is necessary to determine the quantitative characteristics of the resistance of the soil to shear in the bottom prism, as well as the stability of the bottom prism of the dam.
Assessment of the Influence of Geomagnetic Activity on the Additional Error of Inclinometer Systems
Authors:   Ufa State Petroleum Technical University, Kovalev D. V.
Published: December 2024

The study of additional errors of inclinometer measurements is an important problem. In the process of measurement, the key role is played by the accuracy of the tool, which depends not only on the characteristics of the instrument and its calibration, but also on external influences. The most important of these influences is geomagnetic activity, which has a serious impact on the error of inclinometer systems. This can result in significant economic and reputational losses.
On Methods of Advancing the Efficiency of Data Transmission of Mud Pulse Downhole Telemetry Systems
Authors:   Ufa State Petroleum Technological University, Petrov M. A. , Vorobyov A. V. ,   Ufa State Petroleum Technological University
Published: December 2024

Due to the growth of the share of hard-to-recover oil and gas reserves, horizontal wells with greater lateral sections are becoming the standard in the drilling industry. In the process of directional drilling, because of the significant distance from the bit to the geophysical sensors, and the low efficiency of data transmission from downhole equipment to the surface in wells of this type, the likelihood of risks of deviation from the planned trajectory increases. The current situation involves financial losses and additional technological costs, and in particularly unfavorable cases, it can even lead to significant environmental damage. Moreover, if the issue related to the reduction of the zero-gap could be solved by implementing rotary-steerable systems and near-the-bit subs into operation, the search for a data transmission method that is high-speed and independent of interfering noise is still relevant. In this paper, we consider and analyze methods for transmitting data from the well to the surface in real time, promising ways to filter the hydraulic channel signal, ensuring minimization of risks associated with obtaining false information and loss of communication in the well-surface system.
About Characteristics of Some Kimberlite Indicator Minerals
Authors:   West Yakut Scientific Center Academy of Sciences of the Republic of Sakha (Yakutia), Mirnyy, Zinchuk N. N.
Published: December 2024

Analysis of the results of carried out investigations of mantle modules in kimberlite diatremes of main diamondiferous regions of the Siberian platform was made. Morphology and chemistry of garnets, chrome-diopsides, clinopyroxenes, picroilmenites, chromites and chrome-spinellids were investigated. Generally, the quantity of diamond association minerals is proportional to diamondiferousness of certain type of kimberlite rocks composing pipes. Both comprehensive investigation of kimberlites and study of diamond itself are very important, as diamond is a mineral with a broad complex of physical-chemical and crystal-morphological features, reflecting peculiarity of thermodynamic and geochemical conditions of their formation, which can be used as the typomorphic characteristics. Detailed complex investigations of diamond and its paragenetic accessory minerals allow establishing material-indicative parameters of kimberlite magmatism of various productivity and geologicstructural position of kimberlite bodies, and address issues about primary sources of placer diamonds, as well. The presence in kimberlites of definite groups of depth xenoliths and xeno-grains of their minerals, chemical and geochemical composition of kimberlites allowed formulating a concept about properties of upper mantle formations, which are the source of magma for each of distinguished type of kimberlites. The existing point of view that bedding depth of magma chambers roots is the reason of differing productivity of kimberlites is confirmed. As a rule, the roots of commercially productive kimberlites occur at a greater depth than of low productive. Upgrading the line of research on creation of more efficient ore processing flowsheets and providing crystalintegrity technologies, expansion of diamond application areas with consideration of their real structure and physical features, as well as revelation of natural targets with increased quality of diamond raw material, are all related with investigation of primary indicator minerals of kimberlites.
Nesting ecology of Black Caimans, Melanosuchus niger (Spix 1825) (Crocodylia: Alligatoridae), in the Lago doCuniã Extractive Reserve, Amazon, Brazil
Authors: Val Helena Gurjão Pinheiro , Figueiredo Passos Luiza , Mota Gama Gabriela , Guimarães Rodrigues Flávio Henrique , Coutinho Marcos Eduardo
Published: December 2024

The reproductive success of a population is the expression of life history traits such as fecundity andfertility, which are strongly affected by ecological factors. We investigated the use of nesting sites by female BlackCaimans, Melanosuchus niger (Spix 1825) during three consecutive nesting seasons from 2019 to 2021 at Lago doCuniã Extractive Reserve in the southwestern Brazilian Amazon. We examined factors influencing nesting ecologysuch as chamber temperature and applied multiple linear regressions to test hypotheses related to reproductive tradeoffsbetween different variables, such as female, egg, and clutch sizes. We identified trade-offs between egg width,hatchling size, and clutch size, suggesting that larger clutches contain smaller eggs, resulting in smaller hatchlings.A better understanding of crocodilian reproductive strategies and trade-offs are essential to predict the viability ofpopulations and to foster conservation initiatives at the Lago do Cuniã Reserve, where caimans are currently subjectedto a sustainable harvesting management plan.
Mathematical models of radio wave propagation in heterogeneous environments for wireless networks. Review. Part 2. Mathematical models of radio wave propagation in forests
Authors:   Riga Technical University, Latvia, Popov Valentin I.
Published: December 2024

The paper proposes a classification of mathematical models of radio wave propagation (RWP) in forests in a wide frequency range, which summarizes the results of the works of the author and numerous researchers on the effective complex dielectric constant of forests, effective operating and linear attenuation coefficients, radio path losses, effective differential absorption cross sections and scattering, as well as the specific effective area of backscattering by forest vegetation. The rather complex problem of the influence of forests on the propagation of radio waves of various ranges is still extremely relevant today due to the widespread use of mobile and space radio communication systems, as well as solving the problems of radio monitoring of the earth's surface and radio introscopy of objects in forests.
Processing and analysis of signals for diagnosing the condition of a hip joint endoprosthesis
Authors:   Novosibirsk State Technical University, Russian Federation, Vasyukov Vasily N. , Rajfeld Mikhail A. ,   Novosibirsk State Technical University, Russian Federation, Sokolova Darya O. ,   Novosibirsk State Technical University, Russian Federation, Tashtanov Baikozho R. ,   Novosibirsk Research Institute of Traumatology and Orthopedics named after Ya.L. Tsivyan, Russian Federation, Pavlov Vitaly V. ,   Novosibirsk Research Institute of Traumatology and Orthopedics named after Ya.L. Tsivyan, Russian Federation
Published: December 2024

One of the problems associated with hip arthroplasty is that the endoprosthesis is subjected to significant mechanical loads, which can lead to its destruction. Revision surgeries aimed at determining the condition of the prosthesis are complex and expensive, in addition, they are asso-ciated with the need for the patient to arrive at a medical facility and be hospitalized. An approach to diagnosing a hip endoprosthesis during the patient's normal life is proposed, based on the analysis of vibration and sound oscillations taken from the body surface using a device developed for this purpose based on a three-axis accelerometer. The device for recording vibration and sound oscillations has small dimensions and weight, is fixed on the ilium and practically does not limit the patient's movements during signal recording. The signals are recorded in digital form on a memory card, which, after measurements are taken, can be removed from the device and used to transfer the recording to a computer for processing and analysis. Analysis of the records of signals obtained experimentally allowed to identify signs of various defects (partial abrasion of the polyethylene liner, complete abrasion of the liner and loosening of the prosthesis stem in the area of its attachment to the femur). Statistics are proposed for making a decision when testing hypotheses about the presence/absence of these defects. The results of the experiments are presented.
NEW GEANT4 CROSS SECTIONS DATASET FOR NEUTRONS AND LIGHT IONS
Authors:   N.P. Lebedev Physical Institute of the Russian Academy of Sciences, BAGULYA A.V. , GRICHINE V.M. ,   N.P. Lebedev Physical Institute of the Russian Academy of Sciences, IVANTCHENKO V.N. ,   Tomsk State University, CHALYI N.A. ,   Tomsk State University
Published: December 2024

This paper describes the methods for obtaining and using neutron, proton, gamma-quants, and light ion cross-sections for the Geant4 software package. The new version of the cross-sections is in the G4PARTICLEXS4.1 data set, available with the new Geant4 11.3 version (December 2024). The paper discusses the methods for preparing the data, discusses the accuracy of the tabulation, and provides test results. These cross sections should be used for simulations of experiments at LHC and NICA colliders also may be recommended for other Geant4 applications.
INFLUENCE OF GEOMETRIC FEATURES OF THE CYCLOIDAL ROTOR MODEL ON THE ACCURACY OF CALCULATION OF THRUST-ENERGY CHARACTERISTICS
Authors:   Kutateladze Institute of Thermophysics of the Siberian Branch of the Russian Academy of Sciences, DEKTEREV AR.A. ,   Siberian Federal University, SENTAYBOV A.V. ,   Kutateladze Institute of Thermophysics of the Siberian Branch of the Russian Academy of Sciences; Siberian Federal University, DEKTEREV A.A. ,   Kutateladze Institute of Thermophysics of the Siberian Branch of the Russian Academy of Sciences; Siberian Federal University, DEKTEREV D.A. ,   Kutateladze Institute of Thermophysics of the Siberian Branch of the Russian Academy of Sciences; Siberian Federal University
Published: December 2024

The paper describes a numerical model of a cycloidal rotor and studies the influence of geometric features of the model on the accuracy of calculating its thrust-energy characteristics. It is shown that a more complete model allows for a more accurate assessment of both the rotor thrust and the power expended on the rotor's operation. The ability to assess the contribution of individual components allows for calculations aimed at optimizing design solutions to improve the efficiency of the rotor.
MATHEMATICAL MODELING IN THE PROBLEM OF DETECTING EXPLOSIVE VAPORS FROM SOURCES IN THE SOIL
Authors:   Tomsk State University, KUDRYASHOVA O.B. , GRUZNOV V.M. ,   Trofimuk Institute of Petroleum Geology and Geophysics of the Siberian Branch of the Russian Academy of Sciences, SOKOLOV S.D. ,   Tomsk State University, VOROZHTSOV A.B. ,   Tomsk State University, MIKHAILOV YU.M. ,   Tomsk State University
Published: December 2024

The problem of humanitarian demining remains relevant on a global scale due to the large number of unexploded ordnance and mines located in the ground. An important subtask is the search for such ammunition that cannot be detected using metal detectors, infrared photography from the air, etc. In this case, the only possibility of detection is the search for trace amounts of substances in the air above the soil and in the surface layers of the soil using chemical sensors, biological methods (dogs, rats, bees). The efficiency and usefulness of these methods for detecting buried ammunition can only be assessed by considering the processes of transfer of chemical signatures of explosives through the soil. The paper proposes and investigates a mathematical model of the transfer of explosive vapors through the soil layer. Diffusion is considered as the main mechanism of vapor movement through air pores in the soil. Based on a parametric study of the model, the effect of soil moisture on the velocity of vapor movement was studied. Based on the analysis of the dimensions of the problem, a characteristic time of possible detection of explosive vapors above the soil surface was introduced. The vapor concentration above the soil surface for some explosives (RDX, PETN, TNT) is estimated depending on the depth and time of source occurrence in sand of different humidity. Theoretical calculations show that the vapor concentration above the surface increases nonlinearly. The detection time of explosive vapors can be reduced by 1-2 orders of magnitude if the sensitivity of the device is increased by 1-2 orders of magnitude compared to the sensitivity required to register saturated explosive vapors. The shortcomings and limitations of the model and related directions for further research are discussed.
MODELING OF LINE PROFILES OF RARE GAS SPECTRA EXCITED BY TERAHERTZ ELECTRIC FIELDS
Authors:   Tomsk State University, KORYUKINA E.V.
Published: December 2024

A unified approach is developed for calculating the spectral line profiles of atoms in an alternating electric field based on the diagonalization of the energy matrix of an atom in the field. To calculate the Stark profile of the spectral line, a formula is proposed in which the profile width contains an explicit dependence on the electric field parameters. The algorithm of the method is implemented in the StarkD software package written in FORTRAN and Maple. Within the framework of the proposed approach, computer modeling of the spectral line profiles of He, Ne, and Ar atoms in terahertz electric fields of linear polarization is performed. The results of calculations make it possible to analyze the reasons for narrowing/broadening of spectral lines, increasing/decreasing spectral line intensities, as well as changes in the shift directions of atomic spectral lines under the change in the electric field frequency in the terahertz range.
Agregação de valor ao lixiviado de compostagem do bagaço de uva pelo uso como meio de cultura e componente de biofertilizante
Authors: Russi Alessandra
Published: December 2024

Industrial activities produce substantial amounts of waste and by-products, posing significant environmental risks. Composting emerges as a vital strategy for organic waste decomposition and enhancement. However, composting generates leachate, which can pollute soil and water. Thus, our study aimed to assess the potential of grape pomace composting leachate as a component of a culture medium for Bacillus subtilis F62, a plant growth-promoting bacterium, and as a fertilizer for strawberry plants. Initially, we evaluated the physicochemical properties of the leachate and its impact on bacterial growth at various dilutions. Subsequently, we tested the leachate alone and in combination with the bacterium on micropropagated strawberry plants. Results revealed that despite low carbon and nitrogen concentrations, the leachate facilitated bacterial growth similar to LB medium at 10% and 25% dilutions. Furthermore, both leachate application methods, alone and combined with the bacterium, yielded vigorous strawberry plants, particularly with the biofertilizer containing B. subtilis F62. In conclusion, leachate from grape pomace composting shows promise for bacterial growth and fertilizer development to enhance strawberry plant growth and development.
Análise da eficiência de compostagem e vermicompostagem para resíduos sólidos orgânicos com inserção de material biodegradável
Authors: Barcia Maiza Karine , Camargo Giovani Almeida , Olivato Juliana Bonametti , Martins Kelly Geronazzo , Veiga Tatiane Bonametti
Published: December 2024

Improper disposal of solid waste leads to environmental and socioeconomic damages. In Brazil, approximately 45.3% of urban solid waste destined for landfills and "dumpsites" consists of organic waste, resulting in a reduced lifespan of sanitary landfills. This study aimed to analyze the efficiency of composting and vermicomposting processes for organic waste with the addition of biodegradable material. Composters were monitored for 100 days, analyzing physicochemical parameters such as temperature, pH, moisture, and organic matter. Microbial activity was also monitored through analysis of compost basal respiration, microbial biomass carbon, and metabolic quotient. Throughout the research, it was observed that temperature exhibited similar behavior during composting and vermicomposting. At the end of the process, composting pH showed better results; however, vermicomposting yielded more satisfactory results in terms of moisture and organic matter content. Microbial activity remained active, showing expected results, with a decrease in basal respiration rates and microbial biomass carbon, along with an increase in the metabolic quotient. After the study, it was concluded that the addition of biodegradable material did not interfere with the processes, demonstrating compostability potential. Thus, it was possible to ascertain that composting and vermicomposting techniques for organic solid waste, combined with the use of biodegradable material, contribute to the valorization of the circular economy, providing improvements for urban environmental sustainability.
Desenvolvimento do SIGA-ME
Authors: Uliana Maíra Rodrigues , Lima Marcus Ayrton Rocha de , Mafra Renata Cristina , Costa Sérgio Marques , Arana Alba Regina Azevedo
Published: December 2024

For administration, indicators function like a compass in navigation. Based on their availability, quantity, and quality, decision-makers are better assisted in their daily tasks. In public administration, it is no different; however, it is very common for small municipalities, such as Presidente Bernardes-SP, to require managerial support to aid in this task. The aim of the article was to develop a database tool for generating cost and waste indicators in school meals for elementary school students, as well as to calculate and identify the virtual water used in food preparation. Thus, this work was developed through the construction of a system designed in Microsoft Access. The approach employed to achieve this goal was applied research. Consequently, the SIGA-ME system—Applied Management Information System—School Meals was created. The result was the provision of a duly parameterized tool for the municipality. The database includes stock movement entries for twenty days in March 2020. The researcher registered the application with the National Institute of Industrial Property (INPI).
Descentralização de políticas públicas para uma gestão ambiental integrada: uma análise do programa Município VerdeAzul
Authors: Duarte João Paulo Pereira , Ribas Luiz César , Hanai Frederico Yuri
Published: December 2024

In terms of public policies in Brazil, especially within the environmental theme, there is a chain of constitutionally established competences between the federative entities (Union, States, Federal District and Municipalities). With respect to this chain of competences, considering the internationally defended principle of sustainability, namely, "think globally and act locally", attention should be paid to the decentralization of both environmental policies and their command and control instruments, as well as economic, voluntary and market instruments. In view of this, the main objective of this paper is to discuss and analyze the decentralization of power as a tool for the management of environmental public policies. In this sense, and more objectively, it is intended to identify some of the main decentralizing characteristics of the program developed for a long time in the state of São Paulo, designated as the "GreenBlue Municipality Program". To this end, a literature review and document analysis were carried out on the topic to be discussed, especially within the scope of the State Secretariat for the Environment, Infrastructure and Logistics (SEMIL). At the end of this discussion and analysis, it was possible to conclude that the VerdeAzul Municipality program effectively has, in one of its principles, a decentralized management, which is presented in a fully articulated and transparent manner with respect to the processes and actions included in the management of the municipalities. In other words, there is a control on the part of SEMIL with respect to the results achieved (objectives and targets) by the municipalities of São Paulo that voluntarily adhered to the VerdeAzul Municipality Program, but, on the other hand, the benefits achieved by the municipalities are pre-established and offered automatically, integrating the actions. In this sense, it is possible to understand that decentralization, in this case, has a bidirectional sense, that is, it allows the exchange and interaction from the State to the Municipalities and from the Municipalities to the State.
Avaliação da resiliência por indicadores de sustentabilidade em municípios da Bacia Hidrográfica Baixo Pardo/Grande
Authors: Alvares Maria Eugênia Gonçalez , Ventura Katia Sakihama
Published: December 2024

Population growth has created challenges in the urban environment for basic sanitation, health, education and urban mobility services. In this context, the use of indicators for the management of urban services stands out as a tool for analyzing quality of life, which motivated the proposal of 128 indicators by NBR ISO 37120:2021. The aim of this research was to assess the resilience of the Baixo Pardo/Grande Water Resources Management Unit (UGHRI 12) using sustainability indicators. The method consisted of selecting indicators with information available on a digital basis, standardizing indicators (scale 0 and 1) to assess local and regional sustainability and, finally, analyzing the potential for urban resilience based on sustainable development indicators. Thirteen indicators were selected in advance and, to identify sustainability, the arithmetic mean of the standardized values was calculated. So far, the main results show that the majority of municipalities (75.0%) have an overall score between 0.50 and 0.65, one (8.3%) is above 0.70 and two (16.7%) are below 0.50, which means that they may face the greatest challenge in tackling resilience associated with sustainability, which negates the central hypothesis. So far, the SDG with the most information available in a digital database has been SDG 6. The main contribution was to point out the local and regional scenario for achieving sustainability, in order to highlight the weak points in this river basin.
Resíduos sólidos e impactos ambientais em rodovias
Authors: Arana Alba Regina Azevedo , Silva Paulo Antônio da , Uliana Maíra Rodrigues , Silva Ivan Ricardo Aguilar da
Published: December 2024

Highways are integrated into the physical, biotic, and socioeconomic context, which is fundamental for proposing corrective actions that ensure balanced coexistence with the environment. This article aims to construct a critical reflection on solid waste and environmental impacts and draw a parallel with the presence of solid waste on highway SP-613 in Morro do Diabo State Park. The method consisted of a Systematic Literature Mapping (SLM) and textual analysis on solid waste and environmental impacts in electronic databases. This research was approved by the Research Ethics Committee under no. 4201. The publication survey reached a total of 551 references for articles in English and 105 in Portuguese. After applying exclusion criteria, 200 and 29 references were retained, respectively. Textual analysis revealed differences in thematic approaches. The impact of highways as environments for the propagation of waste due to transportation and the presence of landfills is highlighted. The SLM allowed establishing a situational diagnosis of the main publications, pointing out the actions of prevention, mitigation, and compensation of environmental damages that can affect the environmental and socioeconomic balance resulting from the disposal, management, transportation, deposition, and/or reuse of solid waste.
Estudo de Indicadores de Sustentabilidade e de Gestão Hídrica nos Municípios de Araraquara, Jaú e São Carlos
Authors: Protásio Júlia Ramos , Ventura Katia Sakihama
Published: December 2024

Understanding and effectively managing the quantity and quality of water on a regional scale, especially in basin regions, is extremely important to ensure the resilience of a municipality in the face of climate change. In this context, the objective was to study sustainability and water management indicators in the municipalities of Araraquara, Jaú and São Carlos, located in the central region of São Paulo (SP). The method was based on the characterization of the study area through bibliographical research and documentary analysis of information and secondary data, of both qualitative and quantitative nature. Next, water availability (Falkenmark index), water security (Urban Water Security Index) and sustainable development (Sustainability and Cities Development Index) were analyzed. The results indicated that water availability in the basin presents some seasonal problems of water supply and quality, with adverse effects during severe droughts. Regarding water security, all municipalities had indexes classified as 'High'. The observed sustainability gave an overall “average” rating for the three municipalities studied. It was concluded that, through the analysis of the selected indicators regarding the effectiveness of their integrated application in water management in the municipalities of Araraquara, Jaú and São Carlos, this study provided a comprehensive understanding of each municipality. The individual analysis of the municipalities revealed distinct characteristics and opportunities for improvements in the water resources sector
Design and construction of full octagonal transducer-based low-cost dynamometer for measuring cutting forces during turning process
Authors:   Lab. of Precision Engineering, Faculty of Engineering, State Polytechnic of Madiun, Indonesia, Susanto Agus , Setiyana Budi ,   Department of Mechanical Engineering, Faculty of Engineering, Diponegoro University, Indonesia, Ismail Rifky ,   Department of Mechanical Engineering, Faculty of Engineering, Diponegoro University, Indonesia, Alfiyani Risma ,   Lab. of Precision Engineering, Faculty of Engineering, State Polytechnic of Madiun, Indonesia
Published: December 2024

This research focuses on developing a low-cost dynamometer based on a novel transducer, full octagonal ring, which was used to a sensing element of cutting forces in turning process. Various evaluations were performed which aiming to produce accurate dynamometer. Static analysis showed that proposed transducer was capable of withstanding normal load of 224 N and tangential load of 388 N with stress, strain, and deflection of 233 MPa, 9.9 × 10-4, and 8.5 × 10-2 mm, respectively. The dynamic aspect indicated that the natural frequency of developed dynamometer could stabilize at 3.85 kHz with stiffness constant, k, damping ratio, ζ, and damping coefficient, c, of 18.5 × 10-6 N/m, 1.04%, 16 N-s/m. The calibration tests showed that the dynamometer sensitivity for normal force was 78.1 mV/N with cross sensitivity and linearity error values of 10.2% and 0.63%. The sensitivity for tangential force was 85.7 mV/N with cross sensitivity and linearity errors of 8.98% and 3.7%. The performance evaluation of dynamometer through machining tests proved that measured cutting forces matched well to the simulation ones. The spectrum frequencies also revealed characteristics of turning process. These results show that the developed dynamometer in this study was valid used for measuring cutting forces.
Experimental and numerical investigation of solid and hollow recycled aggregate concrete beams subjected to torsion
Authors:   Department of Civil Engineering, GES R.H.Sapat College of Engineering Management Studies & Research Nashik (MS), 422005, India, Masne Nilesh , Pawar Akshay ,   Department of Applied Sciences and Humanities, SVKM’s College of Engineering, Shirpur (MS), 425405, India
Published: December 2024

To attain sustainable development there is an increasing need of appropriate substitute materials of concrete ingredients such as coarse aggregates. The main aspiration of this effort is to produce the concrete using recycled concrete aggregates derived from construction and demolition (C&D) waste. As such, the use of recycled aggregate concrete (RAC) in structural elements becomes absolutely essential. A series of solid and hollow RAC beams were tested experimentally and simulated under torsional load to compared with natural aggregate concrete (NAC) beams. All tested solid and hollow beams of size, 150 mm wide x 250 mm depth x 1800 mm length with 50 mm x 150 mm opening for hollow beam, which composed of recycled concrete aggregate with replacement ratios of 0%, 50%, and 100%. The torsional capacity of hollow beams was found only lower by 5.49 %, 6.69 % and 8.67 % than the experimental solid beams in test results. The simulation results yielded similar trends, with reductions of 7.52%, 7.90%, and 8.26% in the torsional capacity of hollow beams compared to solid beams. The observed torsional parameter of beams such as crack pattern, torsional ability and twisting angle were found comparable with FE analysis. The findings of this study reveal that RAC beams, whether solid or hollow, possess sufficient torsional capacity and structural integrity, as good as to that of NAC beams. This suggests that RAC can be effectively utilized in structural applications subjected to torsional loads.
Opinions of Experts Working on Identification of Gifted Children in Early Childhood
Authors: Güler Oğuzhan , Canpolat Sevilay , Ökcü Murat , Camcı Sezen
Published: December 2024

This study aims to examine the views of experts involved in the identification of gifted children in early childhood towards identification. The study included 15 experts working in identification at Guidance and Research Centers (GRCs) in Gaziantep, Erzincan, Malatya, and İstanbul provinces. For this qualitative research study, a semi-structured interview form, created by the researchers in accordance with the aims of the research, was used to explore the views of experts involved in early childhood identification. The results of the expert opinions show that the participants defined special ability as above average performance, creativity, problem solving, quick comprehension, and learning. Participants emphasized the necessity of identification in early childhood in order to reveal potential and differentiate education programs. They emphasized the strengths and weaknesses of the tools used in identification. They revealed the problems experienced in the identification process especially in immigrant and refugee groups. They emphasized the effect of pre-test preparations and the opinions of families and teachers on the identification process. A number of recommendations were made in line with the opinions of the experts involved in identification.
The Mediating Role of Career Stress and Career Awareness in the Relationship Between Mother Helicopter Parenting, Autonomy Supportive Behaviors, and Career Instability
Authors: Çelik Oğuzhan
Published: December 2024

This study aims to examine the structural relationships between mothers’ parental helicopter parenting and autonomy supportive behaviors, and emerging adults' career instability, career awareness, and career stress. The study sample includes 970 university students, comprising 635 women (65.4%) and 335 men (34.6%), aged between 17 and 25. Participants provided self-reported data on helicopter parenting, autonomy supportive behaviors, career instability, career awareness, and career stress. Structural equation modeling was utilized to assess the intricate relationships among these variables. Findings indicate that maternal autonomy supportive behaviors significantly correlate with career awareness, though they do not have a statistically significant relationship with career stress. Helicopter parenting is positively associated with career stress, whereas career awareness shows a negative association. Additionally, career awareness inversely contributes to career instability, while both career stress and helicopter parenting have positive contributions. The link between helicopter parenting and career awareness was not statistically significant. Helicopter parenting’s impact on career instability is mediated by career stress, while the influence of autonomy supportive behaviors on career instability is mediated through career awareness and both career awareness and career stress.