bluuebunny/crossref_metadata_2025 huggingface dataset:
Factors Affecting Tri Hita Karana Harmony in Traditional Balinese Settlements
Authors: Wijaya Komang Arya Partha , Wiranegara Hanny Wahidin , Supriatna Yayat
Published: June 2024

Tri Hita Karana's philosophy of Balinese people is reflected in harmony with God (parahyangan), with others (pawongan), and with the environment (palemahan). In realizing these values of harmony, Balinese people have customs and culture in arranging their traditional settlement. Factors in traditional settlements that are assumed to influence the harmony are temple, banjar, and zoning. This study aims to examine those factors. Design study is questionnaire survey methode. The hypothesis was tested using multiple linear regression techniques in 200 respondents between the ages of 18-68. The results showed that the temple, banjar, and zoning had significant effect on the harmony of Balinese people. Partially, temple and banjar had a significant effect, while zoning did not show a significant effect. Community patterns and customary systems become more dominant than zoning. Furthermore, the availability of land become a constraint, so that the holy places, banjar, and setra in the zoning follow customary agreements and regulations. Based on these findings, the preservation of these three elements in traditional Balinese settlement needs to be maintained as part of local culture and wisdom to keep the harmony in the traditional Balinese community.
Evaluating the Potentials and Problems of CBT Based on PRA Approach in Managing Rural Tourism (Case Study: Torongrejo Village)
Authors: Maudina Annisa Nadhira , Augusty Widya Rizka , Prasetya Akhmad Rizkie Ajie
Published: June 2024

Torongrejo Village, as one of the villages which developed as new rural tourism by the Batu City Tourism Office, has many attractions, such as nature and local heritage. However, community participation has not been seen in local tourism and still managed individually or privately. One of the alternative concepts to develop rural tourism is community-based tourism (CBT). This study aims to determine the potentials and problems of the village based on the CBT aspects, as follows economic, environmental, cultural, social, and political. In order to achieve these objectives, qualitative method as in Participatory Rural Appraisal (PRA), FGD and field observations were employed and qualitative data collected were analyzed using institutional analysis, evaluation of CBT aspects, and SWOT. This research finds that Cultural and Environmental dimensions are the strengths point, meanwhile politic, economic and social dimensiones are the weak point.
Unlocking Retail Success: Empowering Decision-Making with Advanced Sales Forecast Models
Authors: Alves Geovanne Oliveira , Maciel Alexandre Magno Andrade , Fonseca Jorge Cavalcanti Barbosa , Medeiros Erika Carlos , Moser Patricia Cristina , De Andrade Rômulo César Dias , De Carvalho Fernando Ferreira , Junior Fernando Pontual de Souza Leão , Domingues Marco Antônio de Oliveira
Published: June 2024

The gross revenue indicator contributes to the understanding of the company’s situation, and generating sales revenue forecasts is a strategy that helps the manager in directing the business. This work aims to develop a set of Machine Learning (ML) models to forecast sales in physical retail. Methodology – To carry out this work, a methodology was proposed to create, compare and evaluate ML models. Findings – When analyzing the forecast scenarios, it was observed that Hourly forecasts performed better than Day forecasts. We highlight the LIGHTGBM model, which presented the best scores in the F1-score metric with 82.95%, 79.26% and 76.53% scenario representing one hour, two hours and three hours ahead, respectively. Value – It is expected that the forecast models will help managers to find insights to support the operational decisions of physical retail contributing to carry out actions to optimize companies’ processes.
A comprehensive review of the interaction between COVID-19 spike proteins with mammalian small and major heat shock proteins
Authors: Navhaya Liberty T. , Blessing Dzveta Mutsawashe , Yamkela Mthembu , Godlo Sesethu , Makhoba Xolani Henry
Published: June 2024

Coronavirus disease 2019 (COVID-19) is a novel disease that had devastating effects on human lives and the country’s economies worldwide. This disease shows similar parasitic traits, requiring the host’s biomolecules for its survival and propagation. Spike glycoproteins severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2 spike protein) located on the surface of the COVID-19 virus serve as a potential hotspot for antiviral drug development based on their structure. COVID-19 virus calls into action the chaperonin system that assists the attacker, hence favoring infection. To investigate the interaction that occurs between SARS-CoV-2 spike protein and human molecular chaperons (HSPA8 and sHSP27), a series of steps were carried out which included sequence attainment and analysis, followed by multiple sequence alignment, homology modeling, and protein–protein docking which we performed using Cluspro to predict the interactions between SARS-CoV-2 spike protein and human molecular chaperones of interest. Our findings depicted that SARS-CoV-2 spike protein consists of three distinct chains, chains A, B, and C, which interact forming hydrogen bonds, hydrophobic interactions, and electrostatic interactions with both human HSPA8 and HSP27 with −828.3 and −827.9 kcal/mol as binding energies for human HSPA8 and −1166.7 and −1165.9 kcal/mol for HSP27.
Trust and Mistrust in the MMR Vaccine: Finding Divergences and Common Ground in Online Communication
Authors: Fage-Butler Antoinette
Published: June 2024

The effectiveness of vaccination programmes depends on high levels of public trust in political, scientific and health-related institutions, but public trust in vaccines can waver. This article explores aspects of public trust and mistrust on a web media platform about the MMR (measles-mumps-rubella) vaccine through the statements of a doctor and an anonymised ‘anti-vaxxer’. Thematic analysis identifies commonalities and divergences in both perspectives. Both trust and mistrust of MMR vaccination are presented as moral, reasoned stances by their proponents; they are connected to the individual’s experiences and situations, but are associated with very different trust attitudes to scientific and political institutions. Moreover, both the trustworthiness of the speakers themselves and the (un)trustworthiness of authorities are emphasised. Trust and mistrust are also thematised in relation to contextual matters such as the role of social media and the historical MMR controversy. Further research towards identifying common ground between trust positions is recommended.
Variations in the sub-defect of doubly substochastic matrices
Authors: Cao Lei , Eshkaftaki Ali Bayati , Koyuncu Selcuk
Published: June 2024

The sub-defect of a doubly stochastic matrix

A

A

, denoted as

s
d

(

A

)

=

⌈

n
−
sum

(

A

)

⌉

sd\left(A)=\lceil n-{\rm{sum}}\left(A)\rceil

, is defined as the minimum number of rows and columns required to be added to transform the doubly substochastic matrix into a doubly stochastic matrix. Here,

n

n

signifies the matrix size, and

sum

(

A

)

{\rm{sum}}\left(A)

represents the sum of all entries of

A

A

. This article systematically examines the sub-defect characteristics inherited in doubly stochastic matrices, specifically in the context of symmetric, Hankel-symmetric, and centrosymmetric doubly substochastic matrices. Furthermore, we present illustrative examples to elucidate the practical applicability and significance of our approach in comprehending and manipulating the sub-defect of these specialized matrices.
Effect of Ozone Gel on Postoperative Sequelae after Surgical Removal of Impacted Lower Third Molars.
Authors:   Department of Oral and Maxillofacial Surgery, College of Dentistry, Hawler Medical University, Erbil, Iraq., Hamadamin Sherwan Faisal , Haider Ahmad Abdulla
Published: June 2024

Background and objectives: the study aims to evaluate the efficacy of ozone gel in reducing pain, swelling, trismus and also to evaluate soft tissue healing and dry socket after surgical removal of impacted lower third molars. Methods: the current study enrolled 50 patients divided randomly in to two equal groups, Group I (study group) received ozone gel intra-socket and oral placebo postoperatively and Group II (control group) received a systemic antibiotic. Clinical examination includes assessment of maximal mouth opening on the day of surgery, panoramic x-ray was used for evaluation of the location and configuration of impacted lower third molars, surrounding bone, mandibular canal and adjacent tooth. Pain and swelling were assessed by visual analogue scale (VAS) and recorded daily for one week by the patients, dry socket was checked at 3rd day postoperatively, maximal mouth opening also was checked at 3rd and 7th day postoperatively and soft tissue healing was checked at 7th day postoperatively. Results: Results showed statistical significance difference regarding pain and swelling and there was no statistically significant difference regarding maximal mouth opening (trismus), dry socket and soft tissue healing in Group I (study group). Conclusion: This study concluded that the use of ozone gel was effective in the reduction of postoperative pain and swelling but it was not effective in reducing trismus, dry socket and soft tissue healing after surgical removal of impacted lower third molars. Keywords: Ozone Gel, Impaction, Third Molar Surgery, Pain, Swelling, Trismus, Dry Socket, Soft Tissue Healing.
Redefining Efficiency
Authors: Turnbull Thomas M.
Published: June 2024

Amid a war in Southeast Asia, fomenting campus radicalism, and a looming energy crisis, a number of physicists shifted from the big science endeavors of post-war physics toward a new and little science of energy efficiency. These moves were actively supported by the American Physical Society, which took various ongoing crises as an opportunity to create employment opportunities and harness enthusiasm for more socially engaged physics. The Society’s 1974 Summer School on efficient energy use was illustrative. Participants came from universities, national laboratories, industry organizations, and utility companies. Together, they estimated efficiency savings believed achievable at certain points in the US energy system. The summer school attendees argued energy efficiency should be redefined according to the second law of thermodynamics rather than the first. This approach allowed energy-using appliances to be reconceived of as sources of energy supply as well as demand. Rigorous estimates of potential savings were made. However, to the ire of more radical physicists, the school placed the onus to conserve on the consumer, ignored industrial energy use, and had avoided drastic measures. In revisiting these events, their lead-up and afterlife, this paper historicizes a now-central tenet of energy policy.
Rezultati novih istraživanja na rtu Ljubljana u Ljupču kod ZadraResults of recent excavations on Cape Ljubljana in Ljubač near ZadarResults of recent excavations on Cape Ljubljana in Ljubač near ZadarResults of recent excavations on Cape Ljubljana in Ljubač near Zadar
Authors: Vujević Dario , Gusar Karla , Glavaš Vedrana
Published: June 2024

Rad donosi pregled rezultata arheoloških iskopavanja na rtu Ljubljana koji su se tijekom 2022. godine odvijali u sklopu terenske nastave Odjela za arheologiju Sveučilišta u Zadru.
Na granici dvaju svjetova – projekt MIGRASSI
Authors: Šućur Jure
Published: June 2024

Na krajnjem zapadnom uglu Vranskog jezera, pedesetak metara od njegove obale, nalaze se dvije nekropole odvojene zidom – Crkvina i Maksanova gomila. Po čemu su se za života razlikovali ljudi pokopani na njima da zadnje počivalište nisu mogli naći na istom mjestu? Odgovor na to pitanje u središtu je projekta i istraživanja o kojima je riječ u radu.
Zaštitna arheološka istraživanja u Segetu Donjem
Authors: Parica Mate , Matura Aleksanda
Published: June 2024

U sklopu pripremnih radova za uređenje dijela obale istočno od marine Baotić u naselju Segetu Donjem, Sveučilište u Zadru, Odjel za arheologiju i tvrtka Stratum d. o. o. proveli su zaštitna arheološka istraživanja s ciljem utvrđivanja postojanja eventualnih arheoloških ostataka na spomenutom području. Arheološka istraživanja na kopnu otkrila su tragove nasipavanju cjelokupnog prostora zemljom i amorfnim kamenjem od novog vijeka do recentnih razdoblja, a podvodnim istraživanjima otkriveni su i tragovi obalne linije iz vremena antike, kao i ostatci antičkog pristaništa izgrađeno od 1. do 3. stoljeća. U stoljećima koja su uslijedila, do današnjih dana, podizanje morske razine preplavilo je antičku obalu, te se ona danas nalazi oko 30 metara udaljena od današnje obale.
Modrave – potraga za tragovima prošlosti u labirintu suhozida
Authors: Šućur Jure
Published: June 2024

Između Zadra i Šibenika prostire se jedan neobičan segment jadranske obale. S jedne je strane Jadransko more, a s druge jezero – Vransko jezero, najveće u Hrvatskoj, između je niska kopnena prevlaka. Zračni pogled na taj prostor pokazuje dva različita dijela – na sjeverozapadu je mreža obrađenih i šumovitih parcela, različite veličine, šikare, naselja i putova, na jugoistoku je mozaik malih parcela prekrivenih vegetacijom. Malo ih je obrađenih, mnogo je šikare, poneki objekt i niz linija, rijetko putova, često suhozidina. Taj mozaik, to su Modrave. Nepostojanje naselja i ravna cesta današnjim su putnicima znak da s nogom na gasu mogu proletjeti, a da pritom i ne stignu promisliti što krije mediteranska šikara oko njih. No nije uvijek bilo tako. Mozaik suhozida i zaraslih maslinika napušten je od ljudi, a ipak je prepun tragova njihove aktivnosti iz različitih vremena.
General Model for the Creation of Social Capital Based on Non-cooperative Game Theory
Authors: Castellanos Anaya Ignacio , Echeverry Botero David A.
Published: June 2024

This article analyzes social capital in Colombia and how to create it in distrustful societies using game theory. Networking generation and trustful environments are intimately related to development, lowering transactional costs and helping societies to create better interchange processes under regulated institutions. However, there are societies, such as the Colombian one, where building trust is difficult due to the country’s history, conflict, and dubious contract bargains. In Colombia and some Latin American countries, most negotiations rely on the assumption that the counterparty wants a tremendous advantage or has an obscure desire when doing business. Still, it is possible to generate confidence through non-cooperative games, in which prior cooperation or trust between market players is unnecessary. The proposed model in this article shows how two agents who do not cooperate and do not have confidence in a competitive environment get higher earnings in the medium and long term in private contractual relationships if they consider their goodwill as a critical variable in their profits calculation and choose the agreement performance strategy.
MODELLING THE FIELDS OF POLLUTANT DISPERSION IN THE ATMOSPHERE FROM FLARES
Authors: ALEKSEEVA M  N. , FEDOROV D  V. , RUSSKIKH I  V. , YASHCHENKO I  G.
Published: June 2024

The fields of pollutant dispersion in the air from three operating flare installations at the territory of the Mamontovskoye field in the Nefteyugansk District of the Khanty-Mansi Autonomous Territory were modelled on the basis of climatic data and technological parameters of flare installations. The amounts of pollutants entering the atmosphere from associated petroleum gas combustion were calculated: carbon monoxide (CO) - 83 %, nitrogen dioxide (NO2) - 0.7 %, soot - 10 %, methane - 6 %. The vegetation cover was mapped relying on the Sentinel-2 satellite image with the shooting date of June 14, 2021, displaying dispersion fields for СО, NO2 and soot. The distances from emission source (flare installation) to isolines with CO and soot concentrations equal to 1 MPCst (5 and 0.15 mg/m3) are 163 and 505 m, respectively (here MPCst is the maximum permissible concentration for short-term exposure level). Similarly, measured distance to the isoline with NO2 concentration 0.1 MPCst concentration (0.02 mg/m3) is 284 m. On average, CO concentration decreases by 1 mg/m3 at a distance of 86 m and becomes equal to 0.2 mg/m3 (0.04 MPCst) at a distance of about 572 m. The resulting model for CO dispersion does not contradict MERRA-2 satellite data, according to which the concentration of CO in the vicinity of the flare installation was 0.2 mg/m3. The gas chromatographic - mass spectrometric analysis of soil samples and plants collected to the north-east from the flare installation at a distance of 216, 486, 710, 1037 and 1380 m has shown that aliphatic hydrocarbons prevail in the composition of soil organic matter. Their content varies from 50 to 80 % of all identified compounds, with the predominance of high-molecular homologues (C27-C33). The maximum total amount of n-alkanes (75.3 μg/g) was detected in the soil sample taken at a distance of 710 m from the flare installation. In the organic matter of pine needles and blueberry leaves, C27 homologue dominates, and C25, C29, C31 characteristic of terrestrial vegetation are present. In addition, polyaromatic compounds were identified in the soil: anthracene/phenanthrene, fluoranthene and pyrene.
RHEOLOGICAL PROPERTIES OF A LOW-TEMPERATURE GEL-FORMING COMPOSITION BASED ON INORGANIC COMPONENTS
Authors: KOZHEVNIKOV I  S. , BOGOSLOVSKII A  V. , ALTUNINA L  K.
Published: June 2024

The results of rheological measurements of a low-temperature composition based on inorganic components developed at the Institute of Petroleum Chemistry SB RAS (GALKA®) are presented. The studies were carried out with a Haake Viscotester IQ rheometer using CC25 geometry (oscillation mode at a frequency of 1 Hz) at different temperatures. The amplitude test determined the range of strain and stress amplitude values corresponding to the range of linear viscoelasticity. For a given value of the deformation amplitude from the range of linear viscoelasticity, the dependences of the complex viscosity modulus (|η*|), the elastic modulus (storage modulus, G´), and the viscosity modulus (loss modulus, G´´) on time were recorded at a temperature of 38, 30, and 20 °С. The kinetics of the gel formation process was characterized, the maximum strength of the formed structure was estimated from the maximal elastic modulus, the time of its formation and the starting points of gelation were determined.
COMBINED OXIDATION OF GASEOUS AND LIQUID ALKANES IN THE BARRIER DISCHARGE PLASMA
Authors: RYABOV A  . , KUDRYASHOV S  V. , OCHEREDKO A  N.
Published: June 2024

The combined oxidation of gaseous (propane, butane) and liquid (heptane, octane, nonane and decane) alkanes in a barrier discharge plasma in oxygen has been studied. Oxidation process involves simultaneous conversion of gaseous and liquid hydrocarbons. Various C1-C4 hydrocarbon gases and mainly oxygenated compounds corresponding to hydroxyl and carbonyl compounds with the same number of carbon atoms in molecules as in the initial alkanes were detected among reaction products. At the stage of chemical reaction initiation in a barrier discharge, the electrons in the discharge interact with all the molecules of the initial mixture to form atomic oxygen and various hydrocarbon radicals. Their subsequent transformation leads to the formation of peroxide radicals of the corresponding alkanes, and their disproportionation leads to the formation of hydroxyl and carbonyl compounds. The mechanism of gaseous alkane oxidation is generally comparable to the mechanism of liquid hydrocarbon oxidation in a barrier discharge, and the key role in the mechanism of alkane co-oxidation is played by the interaction of atomic oxygen with a gaseous or liquid alkane. A probable mechanism for the combined oxidation of gaseous and liquid alkanes in a barrier discharge is proposed on the basis of experimental and literature data, and a simple equation is deduced, linking the rates of atomic oxygen interaction with alkane molecules to hydrocarbon concentrations in the gas phase of the discharge gas in the reactor. Applying the obtained equation, it is possible to estimate the direction of the oxidation of gaseous and liquid alkane mixtures and to involve the experimental data in calculating yet unknown rate constants of atomic oxygen interaction with alkane molecules. The results obtained make it possible to optimise the experimental conditions for the oxidation of gaseous and liquid alkane mixtures with the predominant oxidation of a gaseous alkane. These data will be useful in developing effective methods for the direct processing of a broad fraction of light hydrocarbons.
INVESTIGATION OF THE PHYSICOCHEMICAL AND CATALYTIC PROPERTIES OF MFI TYPE ZEOLITES SYNTHESIZED USING DEEP EUTECTIC SOLVENT
Authors: STEPANOV A  A. , VELICHKINA L  M. , KOROBITSYNA L  L. , ALTUNINA L  K.
Published: June 2024

Zeolites of the structural type ZSM-5 were synthesized using a template, which was pentaerythritol (PER), carbamide (CA), or a deep eutectic solvent (DES) - a binary mixture of PER and CA. It is determined by IR spectroscopy and X-ray diffraction analysis that the nature of the templates used in the synthesis of zeolites affects the phase purity and the degree of crystallinity of the obtained samples. The textural and acidic properties of zeolites and Mo-containing catalysts prepared from them by dry mechanical mixing with nanoscale molybdenum powder have been studied. It is shown that the textural properties of zeolites depend on the template nature. The use of CA promoted obtaining the zeolite with maximal specific surface area and pore volume. The strength of the acid centres of unmodified samples, depending on the structure-forming additive, decreases in the series: DES > CA > PER, and the concentration of acid centres of both types, on the contrary, decreases for zeolites in the series: PER > CA > DES. The catalytic activity of synthesized zeolites has been studied in the processes of non-oxidative methane conversion and refining of the straight-run gasoline fraction of oil. The dependence of the activity and stability of samples on their physicochemical properties caused by the template nature is determined. It has been shown that zeolite synthesized using DES and the 4.0%Mo/ZSM-5 catalyst obtained on its basis exhibit higher activity and stability in the processes of non-oxidative methane conversion into aromatic hydrocarbons and in upgrading the straight-run gasoline fraction of oil, in comparison with zeolite-based catalysts obtained using PER or CA.
STUDY OF THE RHEOLOGICAL PROPERTIES OF HYDROGELS AND CRYOGELS OBTAINED USING THE AQUEOUS SOLUTIONS OF POLYVINYL ALCOHOL
Authors: FUFAEVA M  S. , MANZHAY V  N. , KOZHEVNIKOV I  S.
Published: June 2024

The methods for producing cryogels and hydrogels from viscous aqueous solutions of polyvinyl alcohol (PVA) and their rheological properties are considered. Freezing an aqueous solution of polyvinyl alcohol, its exposure to negative temperature and subsequent thawing at a positive temperature lead to the formation of elastic cryogels. Chemical cross-linking of individual PVA molecules into spatial networks is accompanied by the transformation of aqueous solutions into hydrogels. Sodium tetraborate and glyoxal were used to structurise the polymer solutions. It has been determined that the interaction of these reagents with the functional groups of the polymer causes an increase in the viscosity of three-component systems “PVA - glyoxal - water” and “PVA - sodium tetraborate - water” with time. The kinetics of gel formation in the products of chemical reactions was investigated at different concentrations. It is shown that the viscosity of the studied systems increases with an increase in the concentrations of low-molecular reagents in both cases (PVA - glyoxal and PVA - sodium tetraborate). Hydrogels formed at a positive temperature were subjected to additional freezing-thawing cycle, cryogels were obtained, and their rheological properties were studied. The elastic properties of cryogels were determined to be more clearly pronounced than those of hydrogels. Hydrogels can be used as instantaneous gel-forming systems to protect from dangerous chemicals and to make waterproof barriers in hydraulic structures, as the elastic properties are enhanced after cryogenic exposure.
BIOGEOCHEMICAL TRANSFORMATIONS OF SULPHUR IN THE SALINE LAKES OF TRANSBAIKALIA
Authors: BORZENKO S  V. , FEDOROV I  A. , KOMOGORTSEVA I  A.
Published: June 2024

Biogeochemical transformations of sulphur in the saline lakes of southeastern Transbaikalia have been studied. Quantitative measurements show that hydrogen sulphide is present in the water and bottom sediments of most of the lakes studied. In addition to hydrogen sulphide, the presence of sulphate, thiosulphate, and elemental sulphur was detected in the water column, while sulphate and elemental sulphur were found in the bottom sediments. It was established that elemental sulphur exists in the lakes primarily in the form of suspension and colloids, as well as polysulphidic sulphur, the amount of which increases with increasing water pH. It is concluded from the isotopic ratios of sulphur for sulphate, hydrosulphide ions, and elemental sulphur that sulphur in the studied natural systems is controlled by biological and geochemical processes. One of the processes controlling the behaviour of sulphate ions in the lakes is sulphate reduction, which leads to the enrichment of sulphate sulphur and depletion of sulphur in hydrogen sulphide with the 34S isotope. It is shown that oxidation of reduced sulphur in the lakes proceeds with the participation of oxygen, iron, manganese, as well as various bacteria. The presence of an additional source of sulphur and/or absence of sulphur reduction causes 32S accumulation in sulphate ions. It is determined that the loss of sulphate ions due to their bacterial reduction in bottom sediments is most pronounced in the chloride and soda lakes of the I and III subtypes. In the sulphate and soda lakes of the II subtype, an increase in the amount of sulphate ions was detected.
UTILIZATION OF CALCINED SORBENT FROM ASH-AND-SLAG WASTE FROM THERMAL POWER ENGINEERING PLANTS FOR WASTEWATER TREATMENT
Authors: KOROTKOVA T  G. , ZAKOLYUKINA A  M. , DEMIN V  I.
Published: June 2024

The discharge of untreated or insufficiently treated sewage into water bodies leads to their pollution, contributing to the emergence and spread of viruses and bacteria that have a negative impact on the ecosystem. One of the indicators of water contamination by pathogenic microorganisms is ammonium ions. The sorption method based on industrial waste as sorbent precursors has become widespread for treating wastewater from ammonium ions. The article presents the results of studies of a calcined sorbent based on ash-and-slag wastes from thermal power engineering plants for the treatment of real wastewater, discharged into the Kuban river within the city of Krasnodar, to remove ammonium ions (NH4+ concentration 21 mg/dm3). The effect of sorption time (10, 30, 60, 90, 150, and 180 min) and sorbent dose (0.5, 1, 2, 3, and 5 g) on treatment efficiency is investigated. The experimental data are processed on the basis of kinetic equations. It is shown that the equation of the pseudo-first-order (Lagergren) provides the best description of experimental data on sorption in comparison with the pseudo-second-order equation (Ho and McKay) and the Elovich equation. It has been established that internal diffusion adsorption is the limiting stage. Treatment efficiency was 72.8 % at a sorbent dose of 5 g for solution volume 50 cm3 and sorption time 180 min. It is shown that the sorbent dose affects the time within which the phase equilibrium between the solution and calcined sorbent is established. The larger is sorbent dose, the larger number of adsorption centres are occupied by ammonium ions per unit time, so, for the fixed ammonium ion concentration in initial solution, shorter sorption time will be necessary to achieve equilibrium. For real wastewater, the time necessary for equilibrium to be achieved exceeds the value determined experimentally with the model mixtures using small sorbent doses. Reasonability of the application of calcined sorbent for treatment of real wastewater is confirmed.
Isolated hemangioma of the foot
Authors: Tladi Makgabo
Published: June 2024

Hemangiomas are soft tissues tumors that rarely affect the feet and majority are asymptomatic. If activities of daily living is affected, treatment is indicated. The diagnosis is usually made through histopathology. We are presenting a case report of a female patient who presented with a painful and sensitive plantar mass that was treated with an excision.
Education in movement to counteract sedentariness in preschoolers
Authors: Valentini Manuela , Radici Elisa
Published: June 2024

A reflective analysis of various methodologies is proposed to analyse the level of physical activity in pre-school children and prevent the concerning spread of overweightness and obesity. Through careful and scrupulous bibliographic research, using scientific studies from around the world, which report targeted interventions with the purpose of studying and implementing the prevention of these diseases, through the dissemination of the World Health Organization's guidelines on physical activity, sedentary behavior, sleep and the importance of their integration. "Education in movement", through learning new habits as a way of life, is one of the most concrete solutions, although it is not to be considered an easy and obvious thing. Targeted intervention in the nursery school, and not only there, as the ideal place to implement interventions aimed at preventing obesity through movement, a healthy diet and education in healthy lifestyles, is just as necessary as taking care of other areas, for a pedagogy of movement in the holistic conception of the Person.
The impact of folding on the formation of industrial gas content in sandstones under the conditions of Tomashevskyi domes
Authors: Bezruchko Kostiantyn , Prykhodchenko Oleksii , Hladka Maria
Published: June 2024

Given the significant depletion of classic oil and gas fields, which include the majority of hydrocarbon resources in Ukraine, the search for additional alternative deposits of energy carriers is important. The purpose of the work is to analyze the conditions of the industrial gas content in the sandstones of the Tomashevskyi anticlinal structures. On the example of these structures (Northern and Southern domes), the authors considered conditions for the formation of industrial gas content in sandstones of the coal-bearing strata. The research was carried out by constructing a map of local structures with the application of trend analysis. According to the hypsometric plan of the coal bed, an approximating surface of the 1st order – a plane – is constructed. Based on the deviation of the actual hypsometric marks of the coal bed from the corresponding marks of the approximating surface, a map of local structures was constructed by the interpolation method. Anticlinal folds are highlighted in the plan and their main parameters – amplitude and width – are defined. Based on these structural parameters, the bending coefficients of the domes under the research were calculated. Subsequently, calculations of the critical thickness for sandstones were performed. The main factor of the industrial gas content in the domed parts of the Tomashevskyi anticlinal structures is the processes of cracking which entailed the formation of improved filtration-capacity properties of sandstones in the section of the coal-bearing stratum. According to the calculated data, in sandstones with high-thickness, over the critical thickness (from 9.8 m to 17.0 m), accumulations of coal methane were formed under the impact of folded deformations with an effective thickness from 2.4 m to 14.9 m, in line with the actual data. Analysis of folding impact on the conditions of formation of the industrial gas content in sandstones under the conditions of Tomashevskyi domes proved the suitability of the method in predicting gas accumulations in local anticlinal structures for assessing the potential industrial gas content in ordinary 1st-order anticlinal structures. This method can be applied to search for gas deposits, both in positive structures of the 2nd-order (local), and 1st-order structures. Keywords: hydrocarbons, coal-bearing strata, anticlinal structures, sandstones, gas accumulations.
Determination of the pressure flow parameters of a structured suspension
Authors:   M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine, Semenenko Yevhen , Slobodiannykova Inna ,   M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine, Tepla Tetiana ,   M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine, Tatarko Larysa ,   Ukrainian State University of Science and Technologies
Published: June 2024

The subject of the research is the methods of calculating the parameters and flow regimes of structured suspensions, which have significant potential for substantial reduction in energy consumption and specific water consumption of all hydromechanization technologies used in mining enterprises. The main topic of the research is the stability of the suspension structure and uniform distribution of particles of its solid phase throughout the volume during pressure flow through the pipeline. The aim of the work is to establish dependencies on the relative radius that defines the flow area where the suspension structure is not destroyed, not only on the rheological characteristics of the suspension and hydraulic flow parameters but also on the gravitational and repulsive forces between the particles of the solid phase of the suspension, which have an ion-electrostatic and Van der Waals nature. It is established that forces having ion-electrostatic and Van der Waals nature lead to a decrease in the maximum value of the relative radius, at which the suspension structure is still preserved during its flow in the pipeline, since the addition that takes into account their influence is always positive and subtracted from the addition that takes into account the relationship between the initial tangential stress and the hydraulic frictional stress on the inner surface of the pipe. The range of existence of the addition that takes into account the influence of forces having ion-electrostatic and Van der Waals nature and the range of variation of its values аt different values of the parameter of the energy interaction of particles of the solid phase of the structured suspension are investigated. It is established that the dependence of this addition on the distance between particles of the solid phase of the suspension is maximum. The magnitude and coordinates of the maximum depend on the parameter of the energy interaction of the solid phase particles. It is established that with an increase in the value of the parameter of the energy particles interaction of the suspension solid phase, the maximum value of the addition decreases, and the coordinate of this maximum increases. Keywords: structured suspension, radius of undeformed flow core, ion-electrostatic forces, pressure flow, pipeline.
Internal lipids and their fatty acids composition in a sheep wool fiber under biodestruction with fleece microorganisms
Authors:   Lviv National Environmental University, Dubliany, Lviv Region, Ukraine, Tkachuk V. M. , Stapay P. V. ,   Institute of Animal Biology, National Academy of Agrarian Sciences, Lviv, Ukraine;, Ohorodnyk N. Z. , ,   Lviv National Environmental University, Dubliany, Lviv Region, Ukraine;, Motko N. R. ,   Stepan Gzhytskyi National University of Veterinary Medicine
Published: June 2024

Microbiological destruction of fibers is a common damage to sheep’s wool. Considering the defining role of internal lipids in the formation of wool fibers surface the aim of the work was to study the structure and lipid composition of the normal and damaged wool. The research was carried out on ewes of the Askanian fine-wool breed. The content of microorganisms was estimated after sowing on dense nutrient environments. Wool fibers surface was studied by scanning electron microscopy, the content of internal lipids by thin layer chromatography after preliminary alkaline hydrolysis of the fiber, and fatty acids composition by gas-liquid chromatography. Biodestructed wool was shown to contain almost three times more bacteria, as well as higher levels of actinomycetes and mushrooms compared to intact wool. The violation of the cuticular layer was detected as the result of the fleece microflora activity. In a defective wool the content of the free internal lipids and non-esterified fatty acids was increased while the content of protein-bound lipids and esterified cholesterol as well as of ceramides was decreased as compared to normal wool. The level of 18-methyleicosanoic acid in the protein-bound lipids of damaged wool was decreased, indicating the destruction of the thioester bonds by which structural lipids are covalently linked to proteins through 18-methyleicosanoic acid. Keywords: 18-methyleicosanoic acid, biodestruction, fatty acids, internal lipids, microorganisms, protein-bound lipids, sheep’s wool fiber
Kinetic regularities and a possible mechanism of ATP non-enzymatic hydrolysis induced by calix[4]arene С-107
Authors:   Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv, Kosterin S. O. , Veklich Т. О. ,   Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv;, Kalchenko O. І. ,   Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Kyiv;, Vovk A. I. ,   V. P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry,, Rodik R. V. ,   Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Kyiv;, Shkrabak О. А. ,   Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv;
Published: June 2024

The kinetic model of calix[4]arene-induced ATP hydrolysis was elaborated. It is assumed that calix[4]­arene С-107 molecules form a complex with nucleoside triphosphate, ensuring the release of inorganic phosphate Рі, and then switch into an inactive state. Inactive calix[4]arene molecules are no longer able to form a complex with ATP and, accordingly, to provide hydrolysis of nucleoside triphosphate. In the author’s experimental studies, it was possible to explain the kinetic properties of the reaction, namely: the insignificant output of the reaction end product Pi; the quantitative regularities of the plateau (time-wise) accumulation of the reaction product when the concentration of calix[4]arene C-107 or ATP changes; the reciprocal dependence of the ATP half conversion on its concentration; the correspondence of the initial reaction rate dependence on the calix[4]arene and ATP concentration to the Michaelis-Menten equation. The final decision regarding the molecular mechanism of calix[4]arene-induced ATP hydrolysis requires further experimental and theoretical studies. Keywords: calixarenes, empirical kinetic analysis, hydrolysis of ATP
Acute Kidney Injury in Neonates: A Meta-Analysis
Authors: Meena Jitendra , Kumar Jogender , Kocharlakota Jahnavi Phanidhar , Gupta Himanshu , Mittal Piyush , Kumar Amit , Sinha Aditi , Hari Pankaj , Bagga Arvind
Published: June 2024

BACKGROUND AND OBJECTIVE

There is a paucity of pooled synthesized data on the epidemiology of neonatal acute kidney injury (AKI). Our objective with this study is to systematically assess the worldwide incidence of AKI in neonates.

METHODS

We searched 3 electronic databases (Embase, PubMed, Web of Sciences) from January 2004 to December 2022 without language restrictions. We included cohort and cross-sectional studies that reported the incidence of AKI or associated mortality in neonates. Eligible studies had at least 10 participants and used standard criteria (Acute Kidney Injury Network/Pediatric Risk, Injury, Failure, Loss, End Stage Renal Disease (pRIFLE)/ Kidney Disease Improving Global Outcomes) to define AKI. Two authors independently retrieved data on demographic characteristics, clinical setting, and outcomes (incidence and AKI-associated mortality) using a semi-structured proforma and assessed the risk of bias. We used a random-effects meta-analysis to calculate pooled estimates with 95% confidence intervals.

RESULTS

We included 201 studies (98 228 participants) from 45 countries. The incidence of any stage AKI was 30% (95% confidence interval 28–32), and that of severe AKI was 15% (14–16). Overall, AKI-associated mortality was 30% (27–33). The odds of mortality were higher (odds ratio 3.4; 2.9–4.0) in neonates with AKI compared with those without AKI. We found that perinatal asphyxia, sepsis, patent ductus arteriosus, necrotizing enterocolitis, and nephrotoxic medications were significant risk factors for AKI. Significant heterogeneity in the pooled estimates was a limitation of this study.

CONCLUSIONS

AKI was observed in one-third of the neonates and was associated with increased risk of mortality. The incidence of AKI was almost similar in neonates with perinatal asphyxia and sepsis, but mortality was higher in the former group.
Estado y sociedad en las interpretaciones de Brasil en los años 1930: la (tentativa) de invención de una tradición corporativa
Authors: Duarte Costaguta Gabriel
Published: June 2024

El contexto de crisis en las primeras décadas de la República brasileña llevó a los intelectuales de la época a tejer interpretaciones sobre la formación nacional, en la que estarían tanto las características fundantes de la nación, como la génesis de sus “problemas”. Así, su conocimiento se constituía en condición para validar cualquier discurso político o social. Como afirma Lucia Lippi de Oliveira (1982, p. 33-34), muchos intelectuales de aquel periodo “como especialistas de la dimensión simbólica, desempeñaron un papel vital en la formulación del pasado”. También para Ângela de Castro Gomes (1998, p. 122), este movimiento de “(re)construcción del pasado nacional” alcanzó dimensiones políticas y públicas: por un lado, se destinó a la producción y divulgación de valores identitarios nacionales, para lo que muchos intelectuales desempeñaron un papel de gran relevancia; por otro, la lectura y valorización de determinados pasados se volvieron el punto clave en el proceso de conformación y divulgación de los proyectos de nacionalidad.
Nem udenista, nem antivarguista: a reforma administrativa nas opiniões da grande imprensa carioca (1952-1953)
Authors: C. Juliani Regina Thiago
Published: June 2024

A relação entre imprensa e política durante o Segundo Governo Vargas (1951-1954) é um dos temas mais abordados pela historiografia correspondente ao período. É inegável que o papel e a atuação dos grandes jornais possuem um lugar especial nas interpretações dos processos políticos que marcaram a conjuntura que vai desde a ascensão democrática de Getúlio Vargas, em 1951, até seu suicídio, em 1954. No entanto, as compreensões decorrentes são bastante limitadas, quando não equivocadas.
Entre a repressão e a resistência: os impactos da prisão política na vida profissional de trabalhadores durante a ditadura civil-militar no Rio Grande do Sul
Authors: Eduardo da Silva Pereira Carlos
Published: June 2024

A situação dos trabalhadores no Brasil no período republicano foi bastante acidentada. Compreender os processos nos quais as mais diversas categorias profissionais estavam envolvidas em nosso país é uma tarefa praticamente impossível. No entanto, é preciso que tentemos sempre colocar essas relações em perspectiva para que tenhamos algum nível de compreensão – parcial, é verdade – dessas realidades.
Identificación molecular de microorganismos en cultivos agrícolas, ornamentales y forestales en Costa Rica, 2009-2018. Parte 2
Authors: Blanco-Meneses Mónica
Published: June 2024

Introducción. La identificación y detección de microorganismos a partir de técnicas moleculares se ha convertido en un insumo de gran ayuda para el diagnóstico de enfermedades, y de microorganismos presentes en los cultivos. Organismos patogénicos, no patogénicos, controladores biológicos y microorganismos utilizados como competidores, antagonistas o mutualistas  pueden aislarse de cultivos agrícolas, ornamentales y forestales. Objetivo. Identificar a nivel taxonómico mediante técnicas moleculares, bacterias y levaduras patogénicas y no patogénicas en cultivos agrícolas, ornamentales y forestales de Costa Rica, y conservar el material en un banco de muestras de ADN. Materiales y métodos. Entre los años 2009 y 2018 el Laboratorio de Técnicas Moleculares del Centro de Investigación en Protección de Cultivos de la Universidad de Costa Rica recibió un total de 181 aislamientos de bacterias y levaduras para detección por medio de PCR tiempo final y tiempo real; e identificación por medio de la secuenciación de regiones específicas. Resultados. Del total de muestras el 94,2 % se analizó por medio de secuenciación y el 5,8 % por PCR. Por medio de detección por PCR en el cultivo de arroz se identificaron bacterias como Burkholderia spp., Acidovorax avenae y Pseudomonas fuscovaginae. Por medio de la secuenciación de la región parcial de 16S se identificaron 172 muestras de especies de bacterias, y cinco muestras de especies de levaduras con la región ITS del ARN ribosomal 18S. Se identificaron microorganismos aislados a partir de dieciocho especies de plantas agrícolas, ornamentales y forestales; entre estos Pseudomonas, Bacillus y Enterobacter y en el caso de levaduras Candida, Pichia y Wickerthamomyces. Conclusión. Esta investigación permitió identificar a nivel taxonómico bacterias y levaduras provenientes de cultivos de Costa Rica. Además, se desarrolla un insumo de consulta y la posibilidad de utilizar a futuro los microorganismos que se encuentran conservados dentro de un banco de muestras de ADN.
Formação humana omnilateral e o Ensino Médio Integrado
Authors: Frigotto Gaudêncio
Published: June 2024

O presente texto é parte do aprofundamento teórico sobre o sentido de integração e de Ensino Médio Integrado, concebido como pilar no confronto com a dualidade estrutural na Educação Básica e na disputa entre a direção da formação científica e a política da juventude. Nos Institutos Federais de Educação, Ciência e Tecnologia, esta disputa é central para cumprirem a sua função social de promover o “desenvolvimento sustentável” e a “qualidade de vida” das populações onde atuam. O aprofundamento e a disputa inscrevem-se no sentido ontológico, epistemológico e político prático de integração, mormente no Ensino Médio. Do mesmo modo, a disputa da compreensão, desde a infância, do princípio educativo do trabalho produtivo socialmente útil e a dimensão contraditória da proibição do trabalho infantil pautada pela Organização Internacional do Trabalho (OIT).
A formação como requisito da legitimidade pedagógica dos professores da educação profissional e tecnológica
Authors: Machado Lucília Regina de Souza
Published: June 2024

Como contribuição ao debate sobre a formação dos professores da educação profissional e tecnológica, discute-se, neste artigo, a legitimidade da atuação na docência nessa modalidade educacional sem o atendimento à preparação pedagógica. Quatro aspectos dessa discussão são retomados: a) a gama de tipos de docência em atividade na educação profissional e tecnológica brasileira; b) as mudanças nessa modalidade educacional tendo-se em conta permanências desafiadoras; c) a importância do relato dos professores nela engajados sobre seu trabalho; d) a necessidade do investimento na construção da pedagogia provinda da educação profissional e tecnológica e a ela destinada.