bluuebunny/crossref_metadata_2025 huggingface dataset:
Protected Geographical Indications for EVOO in Tunisia: Towards Environmental, Social, and Economic Sustainable Development
Authors: Clodoveo Maria Lisa , Yangui Ahmed , Fendri Mahdi , Giordano Simona , Crupi Pasquale , Corbo Filomena
Published: October 2021

In a globalized scenario characterized by cogent challenges, sustainable development represents a fundamental objective, according to the agenda of policymakers. This is particularly true with regard to farming, and those agricultural systems that are fully consistent with sustainability in society (health, employment), environment (methane emission, water resource and so on), and economy (source of wealth). Tunisia is one of the world’s top olive oil-producing countries. It is also the country with the largest certified organic olive-producing areas in the world. Moreover, a larger volume of Tunisian olive oil is produced using nearly organic practices, without actually being certified. Given the growing demand for certified products, Tunisia should strengthen its market position by building on its reputation for sustainable farming, through the promotion and the creation of new geographic indications for EVOO. The objective of this paper is to evaluate the impact of GIs and how such kinds of labeling can be more effective, operational, and sustainable, to support the country’s development strategy in this sector. Through an ad hoc quanti-qualitative analysis of Tunisian olive oil value chain, representative of the natural resources, the deep understanding of cultures and traditions of the country, a comprehensive and precise SWOT analysis carried out on the Tunisian olive sector has been performed. This study bears significance as it depicts a specific roadmap that should allow a better application and extension of GI’s initiatives referring to the three pillars of Sustainable Development Goals of the United Nations, and by building on the position of Tunisia as an organic origin focusing on five strategic lines: organizational and institutional framework; capacity building improvement; communication and networking roles; the role of TIC and the emergence of new opportunities; financial and support products availability. The final outcome should also aim to shorten the distances between all stakeholders to achieve the goals of the 2030 Agenda in the Mediterranean basin, by removing behavioral and institutional barriers that inhibit the transformations needed to achieve more sustainable economies and societies, by means of a cross-disciplinary dialogue around olive oil chain sustainability and narrowing the gap between research and policymakers.
Natural Deep Eutectic Solvents (NaDESs) as Alternative Green Extraction Media for Ginger (Zingiber officinale Roscoe)
Authors: Tzani Andromachi , Kalafateli Styliani , Tatsis Grigorios , Bairaktari Maria , Kostopoulou Ioanna , Pontillo Antonella Rozaria Nefeli , Detsi Anastasia
Published: October 2021

The extraction of valuable phytochemicals from natural sources is an important and constantly evolving research area. Zingiber officinale Roscoe (ginger) contains high amounts of bioactive phytochemicals, which are desirable due to their significant properties. In this work, the ability of different natural deep eutectic solvents (NaDESs) to serve as green solvents for the preparation of high added value extracts from ginger is explored, in combination with ultrasound assisted extraction. The method was optimized by applying a response surface methodology using the NaDES Bet/La/W (1:2:2.5). Three independent variables, namely the extraction time, ultrasound power and NaDES-to-dry-ginger ratio, were investigated by employing a 17-run three-level Box–Behnken Design (BBD) in order to study the correlation between the extraction conditions and the quality of the obtained extracts. The optimum conditions (in order to achieve simultaneously maximum total phenolic content and antioxidant activity), were found to be 23.8 min extraction time, 60 Watt and NaDES/ginger 25:1 w/w. In the optimum conditions the DPPH radical scavenging ability of the extracts was found to reach IC50 = 18.16 mg/mL after 120 min, whereas the TPC was 20.10 ± 0.26 mg GAE/g of dry ginger. The green methodology was also compared with the extraction using conventional solvents. All the obtained extracts were evaluated for their antioxidant activity and their total phenolic content, while the extract derived by the optimum extraction conditions was further investigated for its ability to bind to calf thymus DNA (ctDNA).
Aggregation of Weak Fuzzy Norms
Authors: Pedraza Tatiana , Ramos-Canós Jorge , Rodríguez-López Jesús
Published: October 2021

Aggregation is a mathematical process consisting in the fusion of a set of values into a unique one and representing them in some sense. Aggregation functions have demonstrated to be very important in many problems related to the fusion of information. This has resulted in the extended use of these functions not only to combine a family of numbers but also a family of certain mathematical structures such as metrics or norms, in the classical context, or indistinguishability operators or fuzzy metrics in the fuzzy context. In this paper, we study and characterize the functions through which we can obtain a single weak fuzzy (quasi-)norm from an arbitrary family of weak fuzzy (quasi-)norms in two different senses: when each weak fuzzy (quasi-)norm is defined on a possibly different vector space or when all of them are defined on the same vector space. We will show that, contrary to the crisp case, weak fuzzy (quasi-)norm aggregation functions are equivalent to fuzzy (quasi-)metric aggregation functions.
Constitutive Equations for Magnetic Active Liquids
Authors: Fialová Simona , Pochylý František
Published: October 2021

This article is focused on the derivation of constitutive equations for magnetic liquids. The results can be used for both ferromagnetic and magnetorheological fluids after the introduced simplifications. The formulation of constitutive equations is based on two approaches. The intuitive approach is based on experimental experience of non-Newtonian fluids, which exhibit a generally non-linear dependence of mechanical stress on shear rate; this is consistent with experimental experience with magnetic liquids. In these general equations, it is necessary to determine the viscosity of a liquid as a function of magnetic induction; however, these equations only apply to the symmetric stress tensor and can only be used for an incompressible fluid. As a result of this limitation, in the next part of the work, this approach is extended by the asymmetry of the stress tensor, depending on the angular velocity tensor. All constitutive equations are formulated in Cartesian coordinates in 3D space. The second approach to determining constitutive equations is more general: it takes the basis of non-equilibrium thermodynamics and is based on the physical approach, using the definition of density of the entropy production. The production of entropy is expressed by irreversible thermodynamic flows, which are caused by the effect of generalized thermodynamic forces after disturbance of the thermodynamic equilibrium. The dependence between fluxes and forces determines the constitutive equations between stress tensors, depending on the strain rate tensor and the magnetization vector, which depends on the intensity of the magnetic field. Their interdependencies are described in this article on the basis of the Curie principle and on the Onsager conditions of symmetry.
The Mouse Papillomavirus Epigenetic Signature Is Characterised by DNA Hypermethylation after Lesion Regression
Authors: Tschirley Allison M. , Stockwell Peter A. , Rodger Euan J. , Eltherington Oliver , Morison Ian M. , Christensen Neil , Chatterjee Aniruddha , Hibma Merilyn
Published: October 2021

Papillomaviruses (PVs) are double-stranded DNA tumour viruses that can infect cutaneous and mucosal epidermis. Human papillomavirus (HPV) types have been linked to the causality of cutaneous squamous cell carcinoma (cSCC); however, HPV DNA is not always detected in the resultant tumour. DNA methylation is an epigenetic change that can contribute to carcinogenesis. We hypothesise that the DNA methylation pattern in cells is altered following PV infection. We tested if DNA methylation was altered by PV infection in the mouse papillomavirus (MmuPV1) model. Immunosuppressed mice were infected with MmuPV1 on cutaneous tail skin. Immunosuppression was withdrawn for some mice, causing lesions to spontaneously regress. Reduced representation bisulphite sequencing was carried out on DNA from the actively infected lesions, visibly regressed lesions, and mock-infected control mice. DNA methylation libraries were generated and analysed for differentially methylated regions throughout the genome. The presence of MmuPV1 sequences was also assessed. We identified 834 predominantly differentially hypermethylated fragments in regressed lesions, and no methylation differences in actively infected lesions. The promoter regions of genes associated with tumorigenicity, including the tumour suppressor protein DAPK1 and mismatch repair proteins MSH6 and PAPD7, were hypermethylated. Viral DNA was detected in active lesions and in some lesions that had regressed. This is the first description of the genome-wide DNA methylation landscape for active and regressed MmuPV1 lesions. We propose that the DNA hypermethylation in the regressed lesions that we report here may increase the susceptibility of cells to ultraviolet-induced cSCC.
Predicting COVID-19 Vaccination Intention: The Determinants of Vaccine Hesitancy
Authors: Fernandes Nuno , Costa Daniela , Costa Diogo , Keating José , Arantes Joana
Published: October 2021

Do people want to be vaccinated against COVID-19? Herd immunity is dependent on individuals’ willingness to be vaccinated since vaccination is not mandatory. Our main goal was to investigate people’s intention to be vaccinated and their intentions to vaccinate their children. Moreover, we were interested in understanding the role of the personal characteristics, psychological factors, and the lockdown context on that decision. Therefore, we conducted an online survey during the lockdown in Portugal (15 January 2021 until 14 March 2021). Participants completed a socio-demographic questionnaire, questions about their intentions of being vaccinated, concerns about the vaccine, a COVID-19 attitudes and beliefs scale, a COVID-19 vaccine attitudes and beliefs scale, and the Domain-Specific Risk-Taking (DOSPERT) Scale. Our results showed that from the 649 participants, 63% of the participants reported being very likely to have the vaccine, while 60% reported being very likely to vaccinate their children. We conducted two linear regression models, explaining 65% of the variance for personal vaccination and 56% of the variance for children vaccination. We found that the COVID-19 vaccine general beliefs and attitudes were the main determinants of vaccination intention. Additionally, our proposed artificial neural network model was able to predict with 85% accuracy vaccination intention. Thus, our results suggest that psychological factors are an essential determinant of vaccination intention. Thus, public policy decision makers may use these insights for predicting vaccine hesitancy and designing effective vaccination communication strategies.
Drivers of COVID-19 Vaccine Uptake amongst Healthcare Workers (HCWs) in Nigeria
Authors: Agha Sohail , Chine Adaobi , Lalika Mathias , Pandey Samikshya , Seth Aparna , Wiyeh Alison , Seng Alyssa , Rao Nandan , Badshah Akhtar
Published: October 2021

This study applied a behavioral lens to understand drivers of COVID-19 vaccination uptake among healthcare workers (HCWs) in Nigeria. The study used data from an online survey of Nigerian HCWs ages 18 and older conducted in July 2021. Multivariate logistic regression analyses were conducted to examine predictors of getting two doses of a COVID-19 vaccine. One-third of HCWs in our sample reported that they had gotten two doses of a COVID-19 vaccine. Motivation and ability were powerful predictors of being fully vaccinated: HCWs with high motivation and high ability had a 15-times higher odds ratio of being fully vaccinated. However, only 27% of HCWs had high motivation and high ability. This was primarily because the ability to get vaccinated was quite low among HCWs: Only 32% of HCWs reported that it was very easy to get a COVID-19 vaccination. By comparison, motivation was relatively high: 69% of HCWs reported that a COVID-19 vaccine was very important for their health. Much of the recent literature coming out of Nigeria and other LMICs focuses on increasing motivation to get a COVID-19 vaccination. Our findings highlight the urgency of making it easier for HCWs to get COVID-19 vaccinations.
Research on Water Quality Simulation and Water Environmental Capacity in Lushui River Based on WASP Model
Authors: Obin Nicolas , Tao Hongni , Ge Fei , Liu Xingwang
Published: October 2021

In recent years, the severe deterioration of water quality and eutrophication in the Yangtze River has brought much trouble to people’s lives. Because of this, numerous management departments have paid more and more attention to the treatment of the water environment. In order to respond to water environmental protection policy and provide management departments with a basis for refining water quality, this paper takes the Zhuzhou section of Yangtze River-Lushui watershed as its research object. First, we used the Water Quality Analysis Simulation Program (WASP) model as a tool, and obtained the pollution load using the FLUX method formula. During the calibration process, the sensitivity analysis method, the orthogonal design method, and the trial and error method were used. Then, we verified the results by using water quality monitoring data published by Zhuzhou Ecological Environment Bureau. Following that, the water environmental capacity of the Lushui River in normal, wet and dry periods was calculated using the WASP model: the chemical oxygen demand (COD) was 14,072.94 tons/yr, 17,147.7 tons/yr and 10,998.18 tons/yr, respectively; ammonia nitrogen (AN) was 469.098 tons/yr, 571.59 tons/yr and 366.606 tons/yr, respectively; and total phosphorus (TP) was 93.8196 tons/yr, 114.318 tons/yr and 73.3212 tons/yr, respectively. The results show that the WASP model is applicable and reliable and can be used as an effective tool for water quality prediction and management in this area.
Optimal Regulation of the Cascade Gates Group Water Diversion Project in a Flow Adjustment Period
Authors: Zhu Jie , Zhang Zhao , Lei Xiaohui , Yue Xia , Xiang Xiaohua , Wang Hao , Ye Mao
Published: October 2021

This study focuses on the regulation demand of the cascade gates group water diversion project during the flow adjustment period. A multi-objective optimization regulation model was coupled with the one-dimensional hydrodynamic model and the multi-objective genetic algorithm. Gate opening was used as the decision variable to generate the local operation-oriented cascade gates group regulation scheme. This study considered the Shijiazhuang to Beijing section of the middle route of the South-to-North Water Diversion Project. The optimal operation model has a better control effect than the conventional control method, and the number of gate operations was reduced by 23.38%. The average water level deviation was less than 0.15 m when the feedforward control time of the cascade gates group water diversion project was not more than 24 h. The basic mechanism of maintaining water level stability during the short-term scheduling of the cascade gates group water diversion project makes use of the volume capacity, or the space of the channel pool adjacent to the water demand change position, in advance. The multi-objective optimal regulation model of the cascade gates group that was constructed in this study can quickly generate regulation schemes for different application scenarios.
Immunological mechanisms of occupational hearing loss in workers of oil-producing and petrochemical industries
Authors: Volgareva Alfiya Dinislamovna , Shaikhlislamova Elmira Radikovna , Masyagutova Lyaylya Marselyevna , Karimova Liliya Kazimovna , Gimranova Galina Ganinovna , Muldasheva Nadezhda Alekseevna
Published: October 2021

Most jobs in the oil and petrochemical industries are characterized by exposure to industrial noise, air pollution of the working area with harmful chemicals, dynamic and static loads, forced working posture, and nervous and emotional overstrain. The complex, long-term impact of these factors on workers leads to the development of fatigue, disruption of the adaptive mechanisms of the body and the formation of pathology of the hearing organ. These changes are most pronounced at the initial stages of the formation of professional hearing loss. In order to study the role of immune mechanisms in the pathogenesis of occupational hearing loss, major groups of immunoglobulins (A, M, G, E) in blood serum were determined. The identification of mature T-cell populations was carried out by indirect immunofluorescence method with monoclonal antibodies of the ICO series (CD3+, CD4+, CD8+, CD16+, CD20+) in 120 workers. The state of the immune status of employees of the main professions can be characterized by the presence of a tendency to form a secondary immunodeficiency state, manifested by the suppression of both cellular and humoral links. Violations of individual parts of the immune system among employees of «noise» industries reflect the level of adaptive reactions of the body and correlate with changes in the auditory analyzer and can develop long before the clinical manifestations of the disease. Identification of subclinical changes in the indicators of the immune system of the body of employees will allow timely preventive and pathogenetically justified rehabilitation measures, prevent the progression of the process and its transformation into professional hearing loss and preserve their ability to work for a long period.
Information society: the main features and characteristics of its development in the context of digitalization
Authors: Kolin Konstantin Konstantinovich
Published: October 2021

The information society is a new form of organizing the life of society, in which the main objects and results of labor are information and information resources. The concept of an information society appeared in the second half of the 20th century, but its practical implementation in Western countries began only in the 21st century, when the Internet, mobile telephony, digital television and personal computers became widespread. The article examines the informational concept of social development based on the widespread use of digital technologies, which in recent years have become the most important factor in the scientific, technological and socio-economic development of many countries of the world. The main tendencies of this development and the emerging new opportunities, challenges and threats for people and society are shown. The priority directions of the use of digital technologies in science, economy, social sphere and the system of higher education are determined. The content of a number of new terms related to the processes of digital transformation of society is revealed. It is demonstrated that this is new knowledge that becomes the property of modern culture, science and education. The materials of the article may be of interest to researchers, teachers, PhD students and students of higher educational institutions, as well as to anyone interested in the issues of digital transformation of society.
Nikolay Raevsky — Russian officer, writer and the white movement researcher
Authors: Karpukhin Oleg Ivanovich
Published: October 2021

The article is devoted to the personality of Nikolay Alekseevich Raevsky — a historian, researcher, and writer. Raevsky is known mainly as a researcher of A.S. Pushkin’s life and work. His books about the great Russian poet were immensely popular in Soviet times and had a well-deserved recognition among Pushkin scholars. But still unknown is the other life of N.A. Raevsky — an officer of the Tsarist and White armies, who emigrated after the Civil War from Russia as part of the army of General P.N. Wrangel to the territory of Turkey (to Gallipoli), and then to Bulgaria. Then there was Czechoslovakia, Prague, where he completed a course at Charles University and devoted himself to creating works about the fate of the white movement in Russia. The value of these works today lies in the fact that Raevsky focuses on the political miscalculations of the White movement. In his firm conviction, Bolshevism was able to become a well-organized force largely thanks to a system of ideas clearly expressed and conveyed to the masses, which the White movement did not have. In these works, he removes the noble halo from the Civil War and the White movement, showing the true face of any fratricidal massacre. This approach to the Civil War does not fit into the usual cliché of White Guard literature and memoirs. Raevsky comprehends everything that was used by the most worthy, sincere, ardent young Russian people in the pre-revolutionary era, and especially during the Time of Troubles, and also reflects on what kind of future of Russia attracted them. The materials of the article can be used in the framework of training areas related to linguistics, cultural studies, and history.
Selecting phototrophic species of native biocrusts in arid and semi-arid regions
Authors: Kashi Zenouzi Leila , Kaboli Seyed Hasan , Khavazi Kazem , Sohrabi Mohammad , Khosroshahi Mohammad , Karsten Ulf
Published: October 2021

Background: Biological soil crusts (BSCs) that are able to produce sticky extracellular polymeric substances (EPS) play an important role in the formation of soil aggregates, thereby, reducing soil erosion. In this study, experiments were undertaken to identify biocrust species that produce EPS, in order to combat desertification in the Sejzi desert of Iran. Methods: A biocrust distribution map of Sejzi plain was prepared using Landsat 8 OLI images, then, various sampling points were selected. Some physicochemical parameters of samples from lichen-dominated and non-biocrusted areas were measured. The relationship between soil parameters and biocrusts presence was confirmed based on the Pearson’s correlation coefficient and principal component analysis (PCA) method. The type of chemical compounds in the soil content were determined via Fourier transform infrared spectroscopy (FTIR), including polysaccharides. To estimate the degradability of polysaccharides, each soil sample was placed under defined UV-B radiation for 24, 48, and 72 hours at three replications. Results: There was no significant correlation between moss and lichen species with the amount of EPS (%) values and various occurring cyanolichen species in three biocrusted soil samples, which included Collema coccophorum, Collema tenax, Peccania terricola, and Placidium squamulosum. It was speculated that these polysaccharides were produced by the photobiotic partners (microalgae or cyanobacteria) and secreted to the soil. Conclusion: According to the results, the cyanobacteria species of biocrusted samples might have high potential to combat desertification and soil stabilization in Sejzi desert.
Application of imputation methods for missing values of PM10 and O3 data: Interpolation, moving average and K-nearest neighbor methods
Authors: Saeipourdizaj Parisa , Sarbakhsh Parvin , Gholampour Akbar
Published: October 2021

Background: PIn air quality studies, it is very often to have missing data due to reasons such as machine failure or human error. The approach used in dealing with such missing data can affect the results of the analysis. The main aim of this study was to review the types of missing mechanism, imputation methods, application of some of them in imputation of missing of PM10 and O3 in Tabriz, and compare their efficiency. Methods: Methods of mean, EM algorithm, regression, classification and regression tree, predictive mean matching (PMM), interpolation, moving average, and K-nearest neighbor (KNN) were used. PMM was investigated by considering the spatial and temporal dependencies in the model. Missing data were randomly simulated with 10, 20, and 30% missing values. The efficiency of methods was compared using coefficient of determination (R2 ), mean absolute error (MAE) and root mean square error (RMSE). Results: Based on the results for all indicators, interpolation, moving average, and KNN had the best performance, respectively. PMM did not perform well with and without spatio-temporal information. Conclusion: Given that the nature of pollution data always depends on next and previous information, methods that their computational nature is based on before and after information indicated better performance than others, so in the case of pollutant data, it is recommended to use these methods.
Immobilization of Pb by organic and inorganic phosphate and calcium sources in an acidic Pb-polluted soil amended with cow manure
Authors: Baghaie Amir Hossein , Keshavarzi Mehran
Published: October 2021

Background: Chemical stabilization of heavy metals in acidic soil is one of the important points in environmental pollution. Thus, this research was conducted to investigate the effect of organic and inorganic amendments on lead (Pb) immobilization in the Pb-polluted soil. Methods: Treatments were consisted of applying cow manure (0, 15, and 30 t/ha), and applying cow bone and phosphate rock (5% (W/W)) in the Pb (0, 800, and 1600 mg Pb/kg soil)-polluted soil. The plant used in this experiment was canola. After 70 days, the plants were harvested and soil and plant Pb concentration was measured using atomic absorption spectroscopy (AAS). Results: Applying 15 and 30 t/ha of cow manure in the Pb (1600 mg Pb/kg soil)-polluted soil significantly decreased the soil Pb concentration by 14.3 and 17.2%, respectively. For plant Pb concentration, it was increased by 11.8 and 15.1%, respectively. A significant decrease in plant Pb concentration was measured, when the soil under cultivation of the plant was amended with 5% (W/W) phosphate rock powder. For the plants grown on the soil, which was amended with 5% (W/W), the plant Pb concentration decreased by 17.6%. In addition, applying organic and inorganic amendment significantly decreased the bio-concentration factor (BCF), while the soil microbial respiration increased. Conclusion: The results of this study showed that applying 15 and 30 t/ha cow manure or calcium and phosphorus sources such as cow bone and phosphate rock powder (5% (W/W) can decrease the soil Pb availability and prevent the Pb translocation from soil to plants.
SYSTEMATIC ANALYSIS OF THE SPECIES OF THE GENUS QUERCUS L. IN THE ARBORETUM HERBARIUM OF THE UNIVERSITY
Authors: Degtyareva Svetlana , Dorofeeva Valentina , Chekmeneva Yuliya
Published: October 2021

The results of the analysis of Quercus L. species stored in the herbarium of the Department of Botany and Plant Physiology of Federal State Budget Educational Institution of Higher Education VSUFT (Voronezh) are presented. This herbarium of historical plant collections of the genus Quercus L. is critical for tracking changes in the genus, including the introduction and distribution of species. We examined the belonging of the species to systematic units – subgenus, section, subsection, row, using the traditional classification and the updated intrageneric classification of oaks. Information about the life form, plant height, date and place of collection of the specimen was recorded. We entered information into the database, which will further simplify the work on registration, revision of the herbarium fund and when replenishing herbarium specimens. Conclusions were drawn based on the results of the workabout changes in the taxonomic nature and phylogenetic relationships of species in Quercus L. genus
THEORETICAL STUDY OF THE KINEMATIC AND DYNAMIC CHARACTERISTICS OF THE AUGER WORKING BODY OF A FOREST FIRE GROUND-THROWING MACHINE
Authors: Popikov Petr , Pozdnyakov Anton , Uskov Vladimir , Lysych Mikhail , Gnusov Maksim
Published: October 2021

The paper presents the results of studies of the working processes of screw working bodies in various industries. Studies of the technological parameters of screw working bodies during the removal of the ground cover with combustible plant residues have been insufficiently carried out. A new design of a forest fire machine is proposed, including screw working bodies for removing the ground cover with combustible plant residues, cut-out discs, for the formation of a soil shaft in front of the rotor-thrower, with an adjustable guide casing with the ability to change the directional flow of soil. Working bodies of the forest fire soil-throwing machine are described by a system of differential equations of the translational, rotational movements of the auger working body and the equation of the flow rates of the working fluid. The Cauchy problem is considered on the interval t∈ (t_0; t_end). Original system is reduced to a system of recurrence relations due to its nonlinearity, replacing the derivatives of the desired functions with their finite analogs. This system is unresolved with respect to the senior member. One can apply the method of splitting the system into systems in subspaces of decreasing dimensions and solve the system in these subspaces due to the Fredholm property of the operator coefficient in front of the leading term. The analytical solution of the mathematical model for removing the ground cover by auger working bodies of a forest fire soil-throwing machine when laying fire strips and extinguishing grassland forest fires makes it possible to determine the kinematic and dynamic parameters of the auger working bodies using the final formulas. Simulation modeling of the screw working process was carried out on a virtual laboratory bench. The dependences of the dynamic characteristics of the auger working bodies when overcoming obstacles have been obtained. It was found that the maximum average value of the torque is observed when overcoming an obstacle with a height of 100 mm and the rotation speed of the working body of 400 rpm is 1468.49 N ∙ m, at which its performance is not impaired.
MOLECULAR-GENETIC ANALYSIS OF PROPAGATED IN VITRO CLONES OF POPULUS ALBA L. AND POPULUS TREMULA L. USING MICROSATELLITE MARKERS
Authors: Grodeckaya Tat'yana , Baranov Oleg , Rzhevskiy Stanislav , Fedulova Tat'yana , Shabanova Ekaterina , Konstantinov Andrey , Mashkina Olga
Published: October 2021

Use of planting material of forest trees with improved hereditary characteristics is one of the ways to increase the productivity and biological stability of forest stands. It requires taking measures to develop and improve selection base using modern approaches and methods of genetics and biotechnology. A molecular genetics assessment of clone plants of aspen (Populus tremula L.) and white poplar (Populus alba L.) from a long-term in vitro collection (up to 24 years), planted in a greenhouse and field conditions (nursery), was carried out. SSR loci of the PTR series (PTR5, PTR7, PTR8, PTR12, PTR14) were used as DNA markers. Evaluation of clones' ploidy was carried out on the basis of the diagnosis of "loss of heterozygosity" (LOH) effect. Analysis of 5 microsatellite loci of the specimens showed their high intraclonal genotypic stability and homogeneity in vitro and ex vitro. For the first time, data on the results of a comparative determination of ploidy using karyological and microsatellite analysis were presented. Based on the results of the SSR analysis, it can be concluded that the structure of molecular markers is stable among the samples of one clone that are in long-term cultivation. The ratio of the representation (dose) of electrophoretic variants of PCR products serves as an indirect sign of determining ploidy, but for its reliable assessment it is necessary to study the number of loci that are three times larger than the main set of chromosomes. The specimen also requires information on the amplification coefficient of the markers under study. Thus, it is necessary to use both chromosomal and microsatellite analyzes for reliable assessment of intraclonal homogeneity of various specimens, the development of understanding of clone genotypes formation and determination of their ploidy
Aplicación móvil para la contratación de servicios profesionales
Authors: Rojas Cisneros Henry Daniel
Published: October 2021

El presente trabajo se enfoca en la automatización mediante una aplicación móvil y una página administrativa, de la contratación de servicios profesionales. Esta idea surge de la crisis sanitaria generada por el COVID-19, que afectó principalmente a los aspectos sociales y económicos, lo que provocó un incremento en el indicador de desempleo en la mayoría de los países. Durante esta crisis, empresas que ofrecen sus servicios enfocados en entregas a domicilio, mediante aplicaciones móviles, tuvieron un gran crecimiento debido a su gran demanda por la situación actual; sin embargo, otro tipo de servicios, como los de profesionales informales, se vieron gravemente afectados al no contar con ninguna aplicación que facilite su contratación. Para el desarrollo de este proyecto se utilizó la herramienta de desarrollo Android Studio con el lenguaje de programación Kotlin para la aplicación móvil, y para la página administrativa el Framework Angular, sobre el lenguaje Typescript, ambas aplicaciones se conectan con la plataforma Firebase, que permite la gestión de la información y evita la gestión de un servidor, lo que acelera el desarrollo del lado del cliente.
Analysis of Transboundary Integration on the Basis of Environmental Protection
Authors:   Putyrskiy V.Y.
Published: October 2021

The paper is based on the studies in the sphere of a new direction being developed namely “Solution of political problems with humanitarian methods”. Approaches based on international regional cooperation and environmental management are being analyzed.
International Financial Integration and Stock Market in Developing Countries
Authors: Zaarour Fatma , Ajimi Adnene
Published: October 2021

Objective - This study examines the relation between stock market capitalization and international financial integration for 23 developing countries during 1996 - 2018.

Methodology/Technique - By using recently developed econometric panel techniques. The present paper takes into consideration cross section and structural breaks.

Findings - Our findings show several interesting results. First, the existence of a long run relationship between the stock market and financial integration, particularly when private capital flows are included. Second, with the presence of structural breaks the result shows that international financial integration has a negative impact on stock market, which means that financial integration loses its explanatory power over the crisis period.

Novelty - There is no applied study on the verification of the volatility of international capital flows (foreign direct investments and remittances) in the analysis of the relationship between international financial integration and stock markets.

Type of Paper - Empirical

Keywords: Cointegration, Cross-Section, International Financial Integration, Panel Unit Root, Structural Breaks, Stock Market.

JEL Classification: C23, C51, C58, F02, F21, F24, G01.
Small Platforms and the Gray Zones of Deep Extreme Speech
Authors:   Social Science Research Council, Udupa Sahana
Published: October 2021

Recent trends of migration to smaller social media platforms among right wing actors have raised a caution that an excessive focus on large, transnational social media companies might lose sight of the volatile spaces of homegrown and niche platforms, which have begun to offer diverse “alternative” avenues to extreme speech. Such trends, which drew global media attention during Trump supporters’ attempted exodus to Parler, are also gaining salience in Europe and the global South. Turning the focus to these developments, this article pries open three pertinent features of extreme speech on small platforms: its propensity to migrate between platforms, its embeddedness in domestic regulatory and technological innovations, and its evolving role in facilitating hateful language and disinformation in and through deep trust-based networks. Rather than assuming that smaller platforms are on an obvious trajectory toward progressive alternatives, their diverse entanglements with exclusionary extreme speech, I suggest, should be an important focal point for policy measures.
Peculiarities of Relationship of Personal Variables of Younger Teenagers with Affective Form of Tolerance-Intolerance
Authors: Fedoseevа I. V.
Published: October 2021

The article reveals the peculiarities of the ratio of adolescents prevailing in the family with an affective form of intolerance (intolerance), styles of attitudes and dominant mental formations in the structure of the adolescent’s personality. The possibilities of using the proposed diagnostic tools (including the author’s questionnaire of toleranceintolerance) at various stages of ontogenesis are indicated.
PENCEGAHAN PENYEBARAN COVID-19 (CARA MENCUCI TANGAN YANG BAIK DAN BENAR)
Authors: Putri Vevi Suryenti , Kartini Kartini , Furqani Ayu
Published: October 2021

ABSTRAKLatar Belakang: Covid-19 adalah keluarga besar virus yang menyebabkan infeksi saluran pernapasan atas ringan hingga sedang. penularannya melalui mata, hidung dan mulut. Cara mengantisipasi peningkatan penyebaran dan jumlah infeksi, masyarakat dihimbau untuk melakukan pola hidup sehat baru sesuai protokol kesehatan salah satunya dengan menjaga kebersihan dengan mencuci tangan dengan sabun. Metode: Sasaran kegiatan adalah warga RT 15 Buluran Kenali Kota Jambi. Kegiatan yang dilakukan adalah memberikan edukasi dengan metode ceramah, tanya jawab dan demostrasi cuci tangan pakai sabun dan air mengalir melalui 9 langkah cuci tangan baik secara online dan offlineHasil: Sebelum penyuluhan hanya 65% warga RT.15 Buluran Kenali yang mengetahui tentang cara dan langkah mencuci tangan yang baik dan benar 65% dan setelah diberikan penyuluhan kesehatan menjadi 90% sehingga pengetahuan meningkat sebanyak 25%.Kesimpulan: Terjadi peningkatan pengetahuan setelah pemberian edukasi dan demonstrasi cuci tangan yang baik dan benar

ABSTRACTBackground: Covid-19 is a large family of viruses that cause mild to moderate upper respiratory tract infections. Transmission is through the eyes, nose and mouth. To anticipate an increase in the spread and number of infections, public is encouraged to adopt a new healthy lifestyle in line with health protocols to maintain cleanliness by washing hands with soap.Method: The subjects were the residents of RT 15 Buluran of Jambi city. The activities carried out were providing education with the lecture method, question and answer method, and demonstration of washing hands with soap and running water through 9 steps of washing hands both online and offline.Results: Before counseling, only 65% of residents recognized on the ways and how to wash hands properly and correctly by 65%, and after treatment and being given health education it became 90%. It indicated that there was an increase in terms of knowledge by 25%..Conclusion: The knowledge was increased after education and demonstration of proper washing hand
PENINGKATAN PENGETAHUAN DAN KETRAMPILAN MENYIKAT GIGI DENGAN MEDIA POSTER PADA MURID MADRASAH DINIYAH TAKMILIYAH AL-BANAT KABUPATEN MUARO JAMBI
Authors: Sukarsih Sukarsih , Silfia Aida
Published: October 2021

ABSTRAKLatar Belakang: Hasil Riskesdas tahun 2018 sebesar 41,4% anak berusi 10-14 tahun di Indonesia memiliki masalah pada kesehatan gigi dan mulutnya dan sebesar 37,7% penduduk di Provinsi Jambi memiliki masalah kesehatan gigi dan mulut, dan 96,5% anak usia 10-14 tahun di Indonesia menyikat gigi setiap harinya, dan 1,4 % yang menyikat gigi dengan waktu yang tepat. Metode: Murid kelas I, II, III Madrasah Diniyah Takmiliayah Al-Banat Kab. Muaro Jambi yang berjumlah 68 orang belum pernah mendapatkan penyuluhan kesehatan gigi dan mulut dari petugas kesehatan.Tujuan pengabdian masyarakat untuk meningkatkan pengetahuan dan keterampilan cara menyikat gigi dengan media poster pada murid Kelas I, II, III Madrasah Diniyah Takmiliayah Al-Banat Kab. Muaro Jambi Hasil: adanya peningkatan pengetahuan cara menyikat gigi pada kriteria tinggi sebelum diberi penyuluhan sebesar 29,41% menjadi 82,35% sesudah diberi penyuluhan dengan menggunakan media poster. Ada peningkatan keterampilan cara menyikat gigi kriteria baik sebanyak 25% menjadi 86,76% setelah diberi penyuluhan cara menyikat gigi menggunakan media posterKesimpulan: Terjadi peningkatan pengetahuan acra menyikat gigi setelah diberikan penyuluhan dengan media poster

ABSTRACTBackground: The results of Riskesdas in 2018 reported 41.4% of children aged 10-14 years in Indonesia had problems with their teeth and mouth health, and 37.7% of the population in Jambi Province had dental and oral health problems, and 96.5% of children aged 10- 14 years in Indonesia brushed their teeth every day, and 1.4% of children brushed their teeth with the right time.Methods: The first, second, third grade of Madrasah Diniyah Takmiliayah Al-Banat in Muaro Jambi regency, totaling 68 people, have never received dental and oral health education from health workers. Therefore, this community service aimed to increase knowledge and skills on how to brush teeth properly with poster media for the students of the first, second, and third grade in Madrasah Diniyah Takmiliayah Al-Banat in Muaro Jambi regency.Results: showed an increase in knowledge on how to brush teeth at high criteria before counseling from 29.41% to 82.35% after counseling by using poster media. Additionally, there was an increase in skills on how to brush teeth with good criteria by 25% to 86.76% after counseling on how to brush teeth using poster mediaConclusion: There was an increase on knowledge to brush the teeth after education using meda poster
VISUALISASI PLAK DENGAN SUMBA: METODE PRAKTIS MENINGKATKAN KETERAMPILAN MENYIKAT GIGI
Authors: Fitria Karin Tika , Handayatun Naning Nur
Published: October 2021

ABSTRAKLatar Belakang: Eliminasi plak yang merupakan etiologi utama penyakit gigi karies dan periodontal menjadi kunci pencegahan penyakit gigi dan mulut. Penggunaan sumba yang sebelumnya telah terbukti dapat mendeteksi plak merupakan bahan yang mudah dijangkau oleh berbagai kalangan masyarakat. Kegiatan Pengabdian masyarakat ini bertujuan untuk meningkatkan keterampilan menyikat gigi dengan penggunaan sumba sebagai bahan untuk visualisasi plak gigiMetode: Kegiatan pengabdian masyarakat dilakukan pada murid kelas 5 SDN 33/IV Penyengat Olak Kabupaten Muaro Jambi. Kegiatan diawali dengan penyuluhan kesehatan gigi dan mulut, demonstrasi dan praktik pembuatan disclosing solution atau plak detector dari sumba. Bimbingan menyikat gigi secara personal serta lomba gigi bersih sebagai positive reinforcementHasil: Peningkatan pengetahuan sebanyak 100% pada anak yang diberikan penyuluhan dan demonstrasi penggunaan sumba sebagai plak detector. Perbedaan bermakna skor plak (p=0,000) terlihat antrara sebelum dan sesudah penyuluhan, demonstrasi, praktik penggunaan sumba dan bimbingan menyikat gigiKesimpulan: Terjadi peningkatan pengetahuan dan peningkatan nilai skor plak setelah pemberian penyuluhan, demonstrasi, praktik pengunaan sumba serta bimbingan menyikat gigi pada anak

ABSTRACTIntroduction: Elimination of plaque, as the main etiology of caries and periodontal disease, is the key to preventing dental and oral diseases. The use of sumba, which has previously been proven to be able to detect plaque, is a material that is easily accessible by various groups of people. This community service activity aims to improve tooth brushing skills by using sumba to visualisize the dental plaque.Methods: Community service activities were carried out on 5th grade students of SDN 33 / IV Penyengat Olak, Muaro Jambi Regency. The activity began with dental and oral health education, demonstration and practice of making disclosing solutions or plaque detectors from Sumba. Guidance on personal brushing and clean teeth competitions as positive reinforcementResults: 100% increase in knowledge in children who were given counseling and demonstrations on the use of Sumba to visualize the dental plaque. Significant differences in plaque scores (p = 0.000) were seen between before and after counseling, demonstrations, practice of using Sumba and guidance on brushing teeth.Conclusion: There was an increase in knowledge and an increase in the value of plaque scores after counseling, demonstrations, the practice of using Sumba and guidance on brushing teeth in children.
The influence of leverage, sales growth, and dividend policy on company value
Authors:   Faculty of Economic, University of Widyatama, Bandung, Indonesia  Yoga Tantular Rachman, Liviani Ratu , Rachman Yoga Tantular ,   Faculty of Economic, University of Widyatama, Bandung, Indonesia  Yoga Tantular Rachman
Published: October 2021

Abstract Purpose: This study aimed to determine whether leverage, sales growth, and dividend policies influence the value of the company and determine the development of leverage, sales growth, dividend policy, and company value in real estate, property, and construction companies listed on the Stock Exchange Indonesia period of 2016-2018 Research methodology: This research was a quantitative research. The samples were real estate, property and building construction sector companies listed on the Indonesia Stock Exchange for the period of 2016-2018, amounting to 20 companies. The sampling technique used was non probability sampling with a purposive sampling method.. Results: Leverage, sales growth, and dividend policy affect the company value. The magnitude of the influence of leverage, sales growth, and dividend policy in contributing influence of company value was 58.0%. Limitations: The research is limited to only those companies in the real estate, property, and building construction sectors listed on the Indonesia Stock Exchange from 2016 to 2018 and only focuses on the effect of leverage, sales growth, and dividend policy on firm value. Contribution: Companies in the real estate, property, and building construction sectors listed on the Indonesian Stock Exchange should reduce their leverage, increase sales growth by improving their performance in selling products or services, and improve their dividend policy by increasing dividend distribution to shareholders each year.
Economic efficiency and risk of cassava farming in Lampung province
Authors:   Agribusiness Study Program, Agricultural College of Dharma Wacana Metro, Metro, Indonesia, Zulkarnain Zulkarnain , Zakaria Wan Abbas ,   Faculty of Agriculture, University of Lampung, Bandar Lampung, Indonesia, Haryono Dwi ,   Faculty of Agriculture, University of Lampung, Bandar Lampung, Indonesia, Murniati Ktut ,   aculty of Agriculture, University of Lampung, Bandar Lampung, Indonesia
Published: October 2021

Abstract Purpose: This study aimed to analyze the effect of the use of production factors on cassava production, to analyze cassava income, to analyze the level of economic efficiency in the use of cassava production factors, and to analyze the risk of cassava farming in Lampung Province. Research methodology: The population consisted of 473 farmers from TerusanNunyai, Central Lampung regency. Interviews, observation, documentation, and questionnaires were all used to collect data. Results: The performance of cassava farming which is measured based on the income analysis, the average income value is Rp. 7.351.369,66 with an R/C ratio of 1,46. Then, production factors for NPK-Phonska, TSP/SP-36, KCL, manure, labor, pesticide, and land are not economically efficient in cassava farming, while seed production factors are not economically efficient yet. Income and production in cassava farming have a high risk. Limitations: There is unavoidable transaction cost; therefore, it is necessary to involve transaction costs to get the maximum profit to reach economic efficiency. Contribution: The contribution of this research is to provide input for cassava farmers to get maximum income by avoiding the slightest possible risk.