bluuebunny/crossref_metadata_2025 huggingface dataset:
Relação entre formação docente e tecnologias digitais
Authors: Dias-Trindade Sara , Ferreira António Gomes
Published: February 2022

As competências digitais são fundamentais para uma cidadania plena e a Escola é o espaço onde estas competências se podem desenvolver. Para tal, é necessário que os docentes tenham formação adequada para poderem integrar pedagogicamente a tecnologia nas suas práticas. O estudo apresentado, de teor quantitativo, foca-se no cruzamento entre os resultados do questionário de autoavaliação de competências digitais –DigCompEdu CheckIn– aplicado a 219 professores portugueses, que responderam a um segundo questionário sobre a sua formação inicial para o uso de tecnologia. Os resultados mostram a quase inexistência de preparação para a integração da tecnologia na escola e que é o interesse por mais formação que tem capacitado os docentes para aquele que ainda é um nível médio de competência digitai –B1, Integrador– que caracteriza os docentes como tendo alguma experiência, mas precisando de mais formação para se sentirem mais capazes de integrar a tecnologia em práticas pedagógicas inovadoras.
Diário virtual como espaco (ciber)formativo e o movimento da práxis no curso de Pedagogia da UNEB
Authors: Anecleto Úrsula Cunha , Silva Obdália Santana Ferraz , Da Silva Ediluzia Pastor
Published: February 2022

Este artigo apresenta resultado de prática (ciber)formativa com graduandos do curso de Pedagogia, na modalidade presencial, tendo como objeto de estudo a reflexão desses sujeitos sobre a construção de práxis educativa, mediada por ambiente virtual de aprendizagem. Objetiva problematizar ações discursivas apresentadas pelos futuros professores da Educação Básica, ao vivenciarem a (ciber)formação, ao levar em conta aspectos tecnológicos, pedagógicos e de conteúdos disciplinares, que fazem parte da organização dos cursos virtuais. Metodologicamente, situa-se como uma pesquisa-formação, tendo como dispositivo para a construção de informações o diário virtual, uma das interfaces do ambiente virtual de aprendizagem Moodle. Com este estudo, ratificamos a importância da realização de práticas formativas sobre a Educação online, como um movimento de práxis, também em cursos de modalidade presencial, ao considerar a atuação do futuro docente no ciberespaço.
A Educação Infantil diante dos riscos da COVID-19
Authors: Oliveira Raiza Fernandes Bessa de , Sommerhalder Aline
Published: February 2022

Desde o início 2020, o mundo tem passado por demandas emergenciais devido à disseminação do novo coronavírus, o que exigiu medidas diversas, como implantação de isolamento social e suspensão de atendimento presencial nas escolas. Diante disso, muito se tem visto e discutido a respeito da educação infantil, sendo preocupante a adoção de práticas escolarizantes, preparatórias e, muitas vezes, excludentes, por meio de propostas de atividades não presenciais. O estudo caracteriza-se como estudo de caso e objetiva discutir e analisar ações e documentos de um programa educacional municipal implementado no contexto de pandemia, abordando dilemas e desafios, assim como possibilidades de trabalho. Considera-se que os recursos tecnológicos e digitais podem se configurar como ferramentas potentes de apoio, comunicação, diálogo e estreitamento de vínculos entre os diferentes sujeitos envolvidos na educação e cuidado de bebês e crianças pequenas, no entanto, é preciso atenção, intencionalidade e reconhecimento das limitações, de modo a não aprofundar as desigualdades educacionais e retroceder nas conquistas de direitos e modos de fazer a educação na infância.
Canción del día y de la noche: Poesía Escogida
Authors: Hereyra Collante José Luis
Published: February 2022

Canción del día y de la noche, sin duda, está llamado a convertirse en una obra de referencia en el contexto nacional actual y porvenir de la poesía colombiana, tanto para el interés de los lectores como de los estudiosos, críticos e investigadores. Una suma poética como lo es esta obra, ayudará a comprender, desde la unidad de estilo hasta las constantes temáticas, a un autor ya indispensable en el mapa poético del caribe colombiano. Es una obra donde se reconoce un largo proceso de compromiso con la vida, desde un punto de vista plural centrado en la lucha entre la esperanza y la desesperanza, entre la tensión a veces cruenta, entre el pesimismo y un optimismo al borde del abismo, poetizados como deseos inconclusos y ansias de libertad. Este es un libro que, además de importante, es altamente trascendente, ya que en cada poema los lectores sentirán el desgarramiento sincero del ser que anuncia su canto desde lo más adentro de lo humano. Esta antología poética, a causa de su gran tono lírico, coadyuvará a que los lectores, experimentados o no, se acerquen a la poesía con admiración y maravillado respeto.
Assessment of genetic fidelity of lacy tree philodendron (Philodendron bipinnatifidum Schott ex Endl.) micro propagated plants
Authors: Alwahibi Mona S. , Alhussein Alawaadh Asma , Hassan Dewir Yaser , Soliman Dina A. , Kadry Seliem Mayada
Published: February 2022

Tissue culture is a potent means for producing clonally propagated plants. However, genetically identical regenerants are of great concern due to their economic consequences. Therefore, polymerase chain reaction (PCR)-based molecular markers are employed to detect somaclonal variations. In this study, the genetic fidelity of in vitro raised Philodendron bipinnatifidum clones, and their mother plant was tested using 11 randomly amplified polymorphic DNA (RAPD) markers. The RAPD decamers produced 92 amplicons with 8.4 bands ranging from 260-5000 bp. The bands varied from one to fifteen for primer 8 and primer 7, respectively. The genetic similarity between the micro propagated plantlets and mother plant of P. bipinnatifidum was nearly 100%, assuring uniformity and true-to-type regenerated plantlets for this commercially crucial ornamental plant.
Microsphere: A Wander around Drug Delivery
Authors: Karmakar Anirban , Dev Maity Soumya , Barua Shayeree , Das Raneet
Published: February 2022

Microspheres have free-flowing powder characteristics consisting of synthetic polymers and proteins with a particle size of 1-1000 μm. Microsphere improves bioavailability, stability and targets the drug to a selected site at a predetermined rate. Sorts of microspheres are bioadhesive, floating, radioactive, polymeric, and biodegradable microspheres. Therefore, the array of practices for the groundwork of microspheres offers a chance to regulate drug administration properties and develop the therapeutic efficacy of a given drug. The microsphere is spherical microparticles & is employed where predictable & consistent particle area is vital. The microspheres have the drug located centrally within the particle encased within the unique polymeric membrane. The present review highlights various sorts of microspheres, different methods of preparation, their applications, and various parameters to gauge their efficiency. Microspheres have received much attention not just for prolonged release but also for targeted medicine. A systematic review of one of the most promising drug delivery systems should be easier to read than the medical research articles, as they target a wider audience. The systematic reviews of the microparticles conclude that spherical microspheres & are accustomed to delivering the drug at the target site with specificity if modified and take care of the specified concentration at the location of interest without the untoward effects presented during a consistent therapy to help research and retrieval of health.
Antibacterial and cytotoxic evaluation of sequential extract of Moringa oleifera leaves
Authors: Bin Naeem Usama , Iftikhar Waqas , Rafiq Mussarat , Babar Khawar Muhammad
Published: February 2022

Moringa Oleifera is an interesting plant used in Asian traditional medicine. In this study, in vitro antibacterial and cytotoxic evaluation of sequential extracts (aqueous, ethanol, and chloroform) of Moringa Oleifera was carried out. The antibacterial analysis was estimated with minimum inhibitory concentration (MIC) by micro dilution of Moringa Oleifera against common poultry pathogens Clostridium perfringens type A and Escherichia coli, while cytotoxic evaluation was estimated by the reduction in cell viability due to apoptosis or necrosis by metabolic events in the presence and absence of crude extracts or tested component. The aqueous extract shows the highest percentage yield (45/50gm) succeeded by ethanol extract (5.5gm/50gm) and chloroform extract (0.2gm/50gm). In our study, the zone of inhibition of sequential extracts of Moringa Oleifera against Haemophilus species are highest for chloroform (17mm), intermediate for ethanol (13mm), and lowest for aqueous extract (12.3mm). For chloroform extract the CSP was calculated at 10 different concentrations, 2000 µg/ml, 1000µg/ml, 500µg/ml, 250µg/ml, 125µg/ml, 62.5µg/ml, 31.25µg/ml, 15.63µg/ml, 7.81µg/ml and 3.91µg/ml .The results for cell survival percentage (CSP) in the present research are 26%, 46%, 58%, 55%, 60%, 63%, 62%, 59%, 68% and 82% respectively. The CSP results of chloroform extract indicated that it is toxic for cells at ≥1000µg/ml. At 1000µg/ml concentration CSP was 46% which is > 50% and therefore it is cytotoxic. At higher concentrations, chloroform is more cytotoxic than hexane because at > 1000µg/ml the cell survival percentage was recorded to be < 50%. For ethanol extract CSP was calculated at 10 concentrations, 6000µg/ml, 3000µg/ml, 1500µg/ml, 750µg/ml, 375µg/ml, 187.5µg/ml, 93.75µg/ml, 46.85µg/ml, 23.43µg/ml and 11.71µg/ml. The CSP values are 18%, 48%, 60%, 58%, 69%, 56%, 59%, 74%, 57% and 78% respectively which indicate that at concentrations ≥3000µg/ml the chloroform extract is toxic for cells. At a concentration less than 3000µg/ml, the CSP is more than 50%. So, as compared to hexane and chloroform, ethanol extract is less toxic at higher concentrations. Cytotoxicity of aqueous extract was calculated at 10 concentrations, 5000µg/ml, 2500µg/ml, 1250µg/ml, 625µg/ml, 312.5µg/ml, 156.25µg/ml, 78.125µg/ml, 39.06µg/ml, 19.53µg/ml and 9.76µg/ml. The CSP values are 8%, 18%, 42%, 56%, 54%, 59%, 55%, 62% 59% and 66% respectively. At a concentration ≥625µg/ml, the aqueous extract is toxic for cells. The CSP at 625µg/ml is 42%, hence toxic for cells. The cell survival percentage is more than 50% at a concentration > 625µg/ml, indicating that aqueous extract is more toxic to the cell than the rest of the three (Hexane, Chloroform, Ethanol extracts) at higher concentrations.
Evaluation of the water quality of some sulfur springs in Hammam Al-Alil sub-district in Nineveh governorate
Authors: Bassam Yahya Hadeel , Al-Shaker Yussra , M Hamoshi Rawaa
Published: February 2022

The research assessed the quality of mineral water in some sulfur springs in the Nineveh governorate, which are located in the Hammam Al-Alil sub-district on the right bank of the Tigris River. For that, monthly samples were collected from each site (45) water samples at a rate of (9) samples every month from three springs (3 samples \ Appointed) for five months from November (2020) until March (2021).
The research aims to conduct a monthly study of water quality by conducting physical and chemical tests for the water of these springs, which included Temperature, Electrical Conductivity, Total Dissolved Solids, pH, Total Hardness, Total Alkalinity, Sulfate Ions, Phosphate Ions, Oils and Greases, as well as the tests. Biological measurement of the Total Count of bacteria.
Where the temperature values ​​ranged between (30.6-36.6) m, the Electrical Conductivity ranged between (2050.9-2688.4) μmoz/cm, while the values ​​of Total Dissolved Solids were between (1025.4-2761) mg/liter, and the pH was between (6.8-7.3), concerning Total Hardness, its concentrations ranged between (820-1120) mg/liter during the study period, and the results showed that the Total Alkalinity concentrations were between (552-912) mg/liter in terms of calcium carbonate CaCO3, while the Sulfate and Phosphate ions were Between (1485 - 1712.1) and (0.020-0.069) mg/liter, respectively during the study period, the results indicated that the concentrations of oils and grease were between (0.08-0.27) mg/liter and finally the Total Count of bacteria ranged during the study period between (1.5 - 28) 10x5 cells. Ml -1.
Study the relationship between Helicobacter pylori and bladder cancer
Authors: Heidari Mohammad , Eshagh Hoseini Seyed Jalal , Fatemi Manesh Hassan
Published: February 2022

Given that bladder cancer is one of the most common cancers, and Helicobacter pylori infection also has 30-80% prevalence in different communities, this study investigates the role of H. pylori in developing bladder cancer; From December 2013 to February 2020, 200 patients with bladder tumors who underwent bladder tumor resection through the urethra in Kamkar-Arabnia Hospital were included in this study. H. pylori Ab, IgA, and IgG tests were first requested from all patients. If their antibodies were positive, other periodic tests including creatinine-sodium-potassium, Prothrombin Time (PT), Prothrombin Time Test (PTT), and International Normalized Ratio (INR), urinalysis, and culture were taken. The obtained results were analyzed using SPSS software version 25, and in the chi-square test, P <0.05 was considered a significant level; (3) Results: Based on laboratory findings, 66.5% of patients were H. pylori + (p <0.05). The result of the PCR test was positive in 4% of all patients. Besides, 6% of patients who tested positive for H. pylori Ab also showed positive PCR tests. Further studies are needed to investigate the association between H. pylori infection and bladder tumors to evaluate the proper role of H. pylori in tumors of the urinary system, especially the bladder and prostate, which have not been treated or reduced by treating H. pylori.
Evaluation of Natural Language Processing for the Identification of Crohn Disease–Related Variables in Spanish Electronic Health Records: A Validation Study for the PREMONITION-CD Project
Authors: Montoto Carmen , Gisbert Javier P , Guerra Iván , Plaza Rocío , Pajares Villarroya Ramón , Moreno Almazán Luis , López Martín María Del Carmen , Domínguez Antonaya Mercedes , Vera Mendoza Isabel , Aparicio Jesús , Martínez Vicente , Tagarro Ignacio , Fernandez-Nistal Alonso , Canales Lea , Menke Sebastian , Gomollón Fernando ,   PREMONITION-CD Study Group
Published: February 2022

Background

The exploration of clinically relevant information in the free text of electronic health records (EHRs) holds the potential to positively impact clinical practice as well as knowledge regarding Crohn disease (CD), an inflammatory bowel disease that may affect any segment of the gastrointestinal tract. The EHRead technology, a clinical natural language processing (cNLP) system, was designed to detect and extract clinical information from narratives in the clinical notes contained in EHRs.

Objective

The aim of this study is to validate the performance of the EHRead technology in identifying information of patients with CD.

Methods

We used the EHRead technology to explore and extract CD-related clinical information from EHRs. To validate this tool, we compared the output of the EHRead technology with a manually curated gold standard to assess the quality of our cNLP system in detecting records containing any reference to CD and its related variables.

Results

The validation metrics for the main variable (CD) were a precision of 0.88, a recall of 0.98, and an F1 score of 0.93. Regarding the secondary variables, we obtained a precision of 0.91, a recall of 0.71, and an F1 score of 0.80 for CD flare, while for the variable vedolizumab (treatment), a precision, recall, and F1 score of 0.86, 0.94, and 0.90 were obtained, respectively.

Conclusions

This evaluation demonstrates the ability of the EHRead technology to identify patients with CD and their related variables from the free text of EHRs. To the best of our knowledge, this study is the first to use a cNLP system for the identification of CD in EHRs written in Spanish.
Infodemic Management Using Digital Information and Knowledge Cocreation to Address COVID-19 Vaccine Hesitancy: Case Study From Ghana (Preprint)
Authors: Lohiniva Anna-Leena , Nurzhynska Anastasiya , Hudi Al-hassan , Anim Bridget , Aboagye Da Costa
Published: February 2022

BACKGROUND

Infodemic management is an integral part of pandemic management. Ghana Health Services (GHS) together with the UNICEF (United Nations International Children's Emergency Fund) Country Office have developed a systematic process that effectively identifies, analyzes, and responds to COVID-19 and vaccine-related misinformation in Ghana.

OBJECTIVE

This paper describes an infodemic management system workflow based on digital data collection, qualitative methodology, and human-centered systems to support the COVID-19 vaccine rollout in Ghana with examples of system implementation.

METHODS

The infodemic management system was developed by the Health Promotion Division of the GHS and the UNICEF Country Office. It uses Talkwalker, a social listening software platform, to collect misinformation on the web. The methodology relies on qualitative data analysis and interpretation as well as knowledge cocreation to verify the findings.

RESULTS

A multi-sectoral National Misinformation Task Force was established to implement and oversee the misinformation management system. Two members of the task force were responsible for carrying out the analysis. They used Talkwalker to find posts that include the keywords related to COVID-19 vaccine–related discussions. They then assessed the significance of the posts on the basis of the engagement rate and potential reach of the posts, negative sentiments, and contextual factors. The process continues by identifying misinformation within the posts, rating the risk of identified misinformation posts, and developing proposed responses to address them. The results of the analysis are shared weekly with the Misinformation Task Force for their review and verification to ensure that the risk assessment and responses are feasible, practical, and acceptable in the context of Ghana.

CONCLUSIONS

The paper describes an infodemic management system workflow in Ghana based on qualitative data synthesis that can be used to manage real-time infodemic responses.
Indigenous youth mental wellness and the adaptation of the JoyPopTM app (Preprint)
Authors: Kim Katherine , Au-Yeung Allison , Dagher Danielle , Wekerle Christine ,   Six Nations Youth Mental Wellness Advisory Committee
Published: February 2022

UNSTRUCTURED

To date, Indigenous youth in Canada face significant socio-political risks and threats to their mental wellness, such as intergenerational trauma, water insecurity, environmental degradation, and lack of safe housing. Given the need for mental wellness resources for Indigenous youth, there has been a rising interest in technology-based interventions and mobile applications. The JoyPopTM app is a mobile mental health tool, shown to reduce depression and increase emotions management. We conducted 19 consultations (32% male) about the JoyPopTM app with key adult community stakeholders from the Six Nations of the Grand River Community, with the aim of gathering feedback (e.g., general thoughts and suggestions for improvement) about the app as a resilience tool for Indigenous youth. Consultations were coded in a double-blind fashion and analyzed for emerging themes. Overall, the majority of consultants (>50%) spontaneously offered positive feedback about the app, with significant enthusiasm for the social connecting elements (e.g., the Circle of Trust feature). Also, importance was given to the need to incorporate traditional colours and design elements (e.g., beadwork, nature backgrounds, etc.), as well as cultural practices (e.g., inclusion of new features/activities related to nature, adding Indigenous sounds to the SleepEase activity, etc.). Suggested changes and improvements will be taken into consideration for future adaptations to the JoyPopTM app, to develop a more culturally relevant app that better supports Indigenous youth mental wellness.
Estimation of Groundwater Recharge from Rainfall for Arid Coastal Plain of Ninh Thuan Province, Vietnams
Authors:   Institute of Geological Sciences VAST, Hanoi, Vietnam, Hoang Nguyen Van , Thu Trinh Hoai ,   Institute of Marine Geology and Geophysics VAST, Hanoi, Vietnam, Shakirov Renat ,   Il’ichev Pacific Oceanological Institute FEB RAS, Vladivosstok, Russia, Huong Tran Thi Thuy ,   Institute of Marine Geology and Geophysics VAST, Hanoi, Vietnam, Syrbu Nadezhda ,   Il’ichev Pacific Oceanological Institute FEB RAS, Vladivosstok, Russia
Published: February 2022

Estimation of groundwater recharge from rainfall is a key factor for determining groundwater resources in water development and management for supporting sustainable socio-economic development, especially for arid areas. The paper presents finite element modeling in the simulation of moisture transfer in unsaturated soils through the relationship between soil moisture, soil suction, unsaturated permeability and soil-moisture dispersivity. Those parameters required for soil moisture transfer are derived from the soil-water characteristic curve functions. Element sizes and time steps used in the modelling have been selected based on a detailed analysis of numerical simulation errors. The methodology had been applied to arid coastal plain area of Ninh Thuan province, Vietnam. Five subsurface soil types in the study area have been collected and analyzed, for saturated permeability, porosity, saturated soil water content, field moisture content, etc. Hourly rainfall data of the years 2014–2018 have been analyzed and grouped into different-duration rainfall events (1-hour, 2-hour, 3-hour and so on). The different rainfall durations and depths of rainfall events and temporal infiltration determined by the moisture transfer modelling have allowed determining the groundwater recharge from the rainfall data. The results show that during the rainy months from May to December 2014–2018, the groundwater recharge from the rainfall is very varying through the modeled soil profiles, from 0.280 m (silty clay) to 0.470 m (sandy silt), which is equivalent to 33.3%—55.2% of the rainfall depth during May—December. Lower infiltration in silty clay is due to low permeability and in the sand is due to low suction, and higher infiltration in silt and sandy silt is thanks to their higher moisture dispersivity. On average, in terms of annual rainfall and soil properties, the average infiltration during May—December is 0.380 m which is equivalent to 44.9% of the rainfall depth, which is about 289 106 m3 of rainwater infiltrated into the Quaternary aquifer over 760 km2 of the coastal plain of Ninh Thuan province. The results would be very useful for effective water resources development and management in a given specific hydrogeological condition for such a severe drought area where water is extremely essential.
The Association Between Conditional Cash Transfer and Fertility Intention in Indonesia
Authors: Parenta Bano Rafly , Bulan Samosir Omas , Djutaharta Triasih
Published: February 2022

This study aims to analyze the relationship between conditional cash transfer (PKH in Indonesia)acceptance status and fertility intentions of married women ages 15-49 years who do not use contraception in Indonesia. The data used in this research comes from the results of SUSENAS 2017. The sample was limited to married women aged 15-49 years not currently using a contraceptive method. Ordinal logistic regression was employed to analyze the relationship between PKH acceptance status and fertility intention after controlling for the effects of individual control factors, while a multilevel ordinal logistic model was used to investigate the effects of contextual factors. The study results showed that after controlling for the effects of individual and contextual variables, a high fertility intention was associated with receiving PKH. Women from PKH beneficiary households tended to maximize the assistance received by increasing the number of children (moral hazard behavior ). Moral hazard behavior was more pronounced in women from households that had received PKH or received PKH but could not show their cards.
Hubungan antara partner support dengan resiliensi pada wanita yang mengalami abortus spontanea
Authors: Natasya Shahdifa , Suharsono Yudi , Saraswati Putri
Published: February 2022

Women who experience spontaneous abortion tend to experience psychological disorders such as stress, anxiety, and emotional disturbances. When facing this event, women are expected to have good resilience to deal with these disorders. For women who have experienced a miscarriage, support from a partner  plays an important role in helping the woman to be resilient from the stressor due to a miscarriage. This study is a correlational study to determine the relationship between partner support and resilience in women who experience spontaneous abortion. The subjects involved in this study were 46 people taken by the snowball sampling technique. The process of collecting data uses a scale of partner support and scale of resilience (CD-RISC) and analyzed using product moment correlation. The results showed that there was a significant correlation between partner support and resilience in women who experienced spontaneous abortion (r = 0.413; p = 0.004 <0.05), and R square of 0.170 (17%), indicating that 17 % resilience is influenced by partner support and 83% is influenced by other variables.
Sosiodrama untuk meningkatkan kecerdasan moral pada siswa sekolah menengah pertama
Authors: Mutiya Ana , Anwar Zainul , Ni’matuzahroh Ni’matuzahroh
Published: February 2022

Moral intelligence is a person's ability to determine right behavior and wrong behavior. High moral quality is needed as a benchmark for successful children in their social life. Students who have moral intelligence that is low in integrity in students are not formed, lack responsibility, do not think about other people's feelings when they hurt or behave, and easily act as desired. Lennick and Kiel formulated moral intelligence in four aspects, namely: integrity, responsibility, compassion, and forgiveness. The increase of a behavioral determination is not limited to instinct or children learning independently but from a character education. Sociodrama can be one method of increasing moral intelligence, because there are supporting indicators in sociodrama. This study aims to determine the effect of sociodrama methods on increasing moral intelligence in junior high school students. The research subjects were 26 who were divided into two control groups and the experimental group who had moderate and low scores on moral intelligence. This study used a quasi experiment with a control group design pre-test and post-test. Data analysis used paired sample t test, the results showed a difference between the pre-test and post-test score (r = 21,923 and p = 0,000 (p <0,05), so it can be concluded that the results of the study indicate a significant change from sociodrama intervention in improving moral intelligence in junior high school students.
Body image dan tingkat kebahagiaan pada wanita dewasa awal
Authors: Maulani Firma Aulia
Published: February 2022

Body image is a form of self-assessment which appears based on societies’ perspective. Someone will categorized their self whether they are included or not to the standard of beauty. This condition leads to the satisfaction of their body. However, some experts argue that happiness is a synonym of life satisfaction. It can be concluded that someone will happy when they have been satisfaction to their life. Women in early adulthood have a tendency to focus on their appearance (self-focused). Therefore, they are more focus to take care of their self rather than being involved in social obligation. This current study was conducted to investigate whether body image had an influence or not to the happiness level especially on the women in early adulthood. The total subjects were 150 people. They applied body image scale which is developed by the researcher used body image aspects from cash and happiness scale based on the Subjective Happiness Scale and Satisfaction of Life. The result of this current study showed that there was an influence with r square score = 0,234. In conclusion, variable X (body image) was influence to variable Y (happiness) with 23, 4% of influence score.
STUDYING OF MECHANICAL PROPERTIES OF MATERIALS WITH PRONOUNCED ANISOTROPY OF STRUCTURE
Authors:   Russian State Agrarian University – K.A. Timiryazev Moscow State Agricultural  University, Kravchenko Igor’ N. , Kartsev Sergey V. ,   Institute of Machine Science named after A.A. Blagonravov of the Russian Academy of Sciences, Moskvitin Gennady V. , Pugachev Maksim S. , Kartsev Ivan S.
Published: February 2022

Recently, the quality of grain that comes for processing has deteriorated. This is due to a decrease in the requirements for its quality. The most characteristic example is a grain of barley with pronounced anisotropy of properties and heterogeneity of structure. The feature of processing barley grain is its separation into fractions by size before further processing. The study of the mechanical properties of these fractions is relevant. (Research purpose) The research purpose is in studying experimentally the mechanical properties of barley grain using publicly available techniques and equipment. (Materials and methods) For the experiments, there were used fractions of barley grain divided by size before processing according to the known technology, collected in the flat part of the Belgorod Region of the Central Federal District of the Russian Federation in August 2020 and meeting the requirements of standards. Samples that have passed the stage of temperature treatment were selected for the study. (Results and discussion) The article presents the study of the mechanical properties of barley grains of three fractions by size after storage. The results of the research showed that the strength of barley grain having a moisture content of 14.3 percent, when tested for compression is 20 megapascals and does not depend on the grain size, and the grain itself has anisotropy. The hardness of the barley grain decreases with increasing grain size. (Conclusions) Deformation at the highest destructive compression stress does not depend on the grain size, but has a 1.6 times greater value under vertical loading than under horizontal. Studies have shown that it is possible to determine the mechanical properties of grain crops using standard techniques on modern universal testing facilities that allow measurements to be carried out with high accuracy.
EXPERIMENTAL STUDY TO DETERMINE THE OPTIMAL COMPOSITION AND THICKNESS OF THE SPRAYED LAYER FOR FURTHER IMPLEMENTATION OF THE MAO PROCESS
Authors:   Federal Scientific Agroengineering Center VIM, Chavdarov Anatoliy V.
Published: February 2022

The analysis of literary sources has shown the prospects and the technical possibility of restoring and strengthening parts of agricultural machinery with combined technology using methods of gas-thermal spraying and micro-arc oxidation. The use of base materials made of alloys not used in micro-arc oxidation necessitates the determination of the minimum allowable thickness of the deposited layer for further conducting the micro-arc oxidation process. (Research purpose) The research purpose is to carry out theoretical studies of the composition and thickness of the sprayed layer; to determine experimentally the effect of modes and compositions of micro-arc oxidation electrolytes on the nature and morphology of the surface of the base–coating transition zone. (Materials and methods) The anode-cathode method of micro-arc oxidation was used. The following parameters are variable: in solution – the concentration of caustic potassium KOH and sodium metasilicate Na2SiO3, the amount of nano addition in the form of diamond powder; in technology – the time of micro-arc oxidation. Microhardness was measured using a KMT-3 microhardness meter; The thickness of the layer was determined using an OLYMPUS GX51 optical microscope at a magnification of 100 times. (Results and discussion) The features of the micro-arc oxidation process cause the presence of micro-roughness on the surface of the base metal-coating, the height of which depends on the power of the punched micro-arc and the electrolyte composition. The greatest hardness of the coating is achieved when using nano diamonds as an additive and a long processing time. (Conclusions) When restoring parts from valve metals, the minimum thickness of the deposited alloy layer after machining should be at least 150 percent of the thickness of the micro-arc oxidation layer specified in the technological process; when restoring parts from non-valve metals, at least 250 percent.
TRIBOLOGICAL CHARACTERISTICS OF ANTIFRICTION COMPOSITES OF POLYAMIDE AND ULTRA-HIGH MOLECULAR WEIGHT POLYETHYLENE
Authors:   National Research Mordovia State University, Saransk, Vodyakov Vladimir N. , Kuznetsov Vyacheslav V. , Kulikovskaya Kseniya A.
Published: February 2022

Analysis of current trends in improving the designs of tribo-couplings of agricultural machinery has shown that the use of polyamide 6 as an antifriction material is limited by its low moisture resistance, which leads to a significant deterioration in its elastic-strength and tribological characteristics during moisture saturation. The paper shows the possibility of using ultra-high molecular weight polyethylene as its analogue, which allows increasing the durability of tribo- couplings of hydraulic systems of agricultural machinery. (Research purpose) The research purpose is in to study the processes of friction and wear of polyamide PA 6 composites and ultra-high molecular weight polyethylene nanocomposites with obtaining dependencies linking tribological characteristics (friction coefficient and wear intensity) with operational factors (temperature, sliding speed and contact pressure). (Materials and methods). Polyamide PA 6 of the 210/310 brand was used in the work; composite of the UPA 6-15A brand, consisting of 85 percent polyamide PA 6 and 15 percent fibrous carbon filler; ultrahigh molecular weight polyethylene of the GUR 4120 brand; Tuballmatrixbeta concentrate of activated carbon nanotubes; hydrophobic nanocrystalline silicon dioxide with a dispersion of 20 nanometers, Nafen grade aluminum oxide nanofiber with a dispersion of 10- 20 nanometers. Samples were made to study the elastic-strength and tribological characteristics of composites by thermal pressing on a Gibitre hydraulic press. Samples were tested on the UAI-7000 M bursting machine and the Haake MARS III rheometer. (Results and discussion) The values of the intensity of linear wear and the dependence of the friction coefficients of composites on the sliding speed, contact pressure and temperature of industrial oil I-20A were determined for the conditions of dry friction and friction with lubrication. (Conclusions) The research results have shown that the use of ultrahigh molecular weight polyethylene and nanocomposites based on it as commercial antifriction materials of tribo- couplings is promising and requires further study.
THE EFFECT OF ADDITIVES TO LUBRICANTS AND FUELS ON OPERATION OF AUTOMOTIVE EQUIPMENT
Authors:   Federal Scientific Agroengineering Center VIM, Grigor’yev Viktor S. , Zadorozhniy Roman N. , Romanov Il’ya V.
Published: February 2022

Most agricultural enterprises face problems caused by extreme wear of equipment, outdated technologies, lack of funds for re-equipment and updating of the machine and tractor fleet and technologies. This negatively affects their economic activity and creates the lack of competitiveness of Russian agricultural products. One of the ways to increase the efficiency of production activities of farms is the improvement of technologies for the operation of machines and mechanisms, increasing the hours resource of automotive equipment. The improvement and development of promising additives to lubricants and fuels is an urgent task. Especially effective may be the development of technologies for the production of lubricants that provide a minimum friction coefficient, wear-free and restorative effect. Justification of rational approaches to solving tribotechnical problems requires a clear understanding of the nature of wear and the ability to manage it. (Research purpose) The research purpose is to prove the relevance of the use of repair and restoration tribo-compositions as additives to technical oils and to show the economic effect of their use. (Materials and methods) The ARVC brand composition was chosen as the object of the study. The article presents conducted tests at machine testing stations and enterprises with the necessary equipment. There were used equipment of the CCU "Nano- Center" FNAC VIM. (Results and discussion) The article presents performed full- scale and laboratory tests of repair and restoration tribo-compositions, which were added to technical oils and fuels of various equipment. A positive economic effect from the introduction of wear-free operation technology has been revealed (Conclusions) The literary analysis showed a sufficient level of development of tribotechnical developments. It has been experimentally proved that the use of repair and restoration tribo-compositions significantly reduces the wear of parts working in interfaces.
RECYCLING OF AGRICULTURAL MACHINERY
Authors:   Federal Scientific Agroengineering Center VIM, Katayev Yuriy V.
Published: February 2022

The paper analyzed the experience of countries in creating a waste recycling mechanism and its individual elements. (Research purpose) The research purpose is analyzing the existing waste recycling system in Russia and abroad, revealing the essence of the problems preventing the creation in Russia of a resource-saving and environmentally-oriented system for the disposal of decommissioned equipment. (Materials and methods) The use of effective principles of the waste recycling system by the leading countries has already led to the rapid development of production and the expansion of the goods range. The reduction of renewable natural resources and the deterioration of the planet's ecology due to changes in its landscape due to resource extraction and growing volumes of production and consumption waste are particularly acute problems on the way to the formation of the Waste Recycling Industry. The article analyzes the state of the equipment fleet and the engineering service of the agro-industrial complex. The service life of more than half of the main types of equipment (tractors, combines) exceeds 10-12 years. (Results and discussion) The article presents the structure of the disposal system of decommissioned equipment, the main emphasis in its development should be made at the first stage, the treatment of waste from the disposed equipment. One of the basic tasks is to modernize the repair and maintenance base of the agro-industrial complex to the level at which it would be able to use the circular economy at all stages of technical support of machines, including the disposal of equipment. (Conclusions) It is advisable to develop and implement a pilot project on the scale of the agricultural industry.
IMPROVEMENT OF METHODS FOR MONITORING PASSENGER TRAFFIC ON PUBLIC LAND TRANSPORT
Authors: Korotkikh Yuliya S. , Merkelova Tat’yana V.
Published: February 2022

Data on passenger trips per shift on public land transport is important information for planning and analyzing its work in general, evaluating the effectiveness of the existing route network, as well as the need to update it. The previously existing periodic field observations currently do not meet the modern requirements of passenger transportation management due to the low reliability of the results, the duration of their receipt and the high cost. In recent years, digital passenger identification systems have been used on public passenger transport, which make it possible to obtain data with high accuracy almost immediately after observations. (Research purpose) The research purpose is in identifying the optimal method for determining passenger traffic on passenger transport using modern passenger identification systems. (Materials and methods) During the study there were used methods of data generalization from various services that control the operation of public passenger transport, analysis of the practical application of the passenger identification system by the operator of ground urban passenger transport in Moscow. (Results and discussion) The incompleteness of the data, the high error in the identification of passengers on public transport significantly complicates the assessment of its activities. The existing digital passenger identification systems discussed in this article allow us to evaluate the optimal way to identify passenger flows. The article presents a comparative characterization of existing models and methods of passenger traffic monitoring. (Conclusions) Based on the results, the article proposes the most suitable methods for determining passenger flows that meet the modern requirements of their assessment, contributing to solving the tasks of monitoring the entire transport system of the city in real time, and proposes method of calculating passenger traffic based on the information received.
WAYS TO IMPROVE THE ENGINEERING AND TECHNICAL SYSTEM IN THE AGRO-INDUSTRIAL COMPLEX
Authors:   Federal Scientific Agroengineering Center VIM, Katayev Yuriy V. , Gerasimov Valeriy S. , Mishina Zoya N. , Baulin Nikolay K.
Published: February 2022

The engineering and technical system in the agro-industrial complex is currently an insufficiently studied area of activity and the need to analyze the state of this system is obvious. (Research purpose). The research purpose is in considering the state of the engineering and technical system of the agro-industrial complex and determining ways of its improving. (Materials and methods). The implementation of technological processes for maintaining and restoring the parameters of the technical condition of agricultural machinery with proper quality is possible only with the availability of intelligent technological equipment at specialized enterprises of the agro- industrial complex engineering system, which will provide high-resource repair and maintenance. The article proposes a complete register of operating service enterprises at all levels of ownership, identifying of their potential and developing a strategy for the modernization of this system. (Results and discussion). The article presents for consideration the measures to improve the engineering and technical component in the agro-industrial complex of Russia. At present the system is characterized by a weakening of the quality of technical support of agricultural machines throughout their entire life cycle. One of the important reasons associated with these studies is that ensuring the operational reliability of agricultural machinery for seasonal field work is carried out mainly by agricultural producers, most of whom do not have the ability to carry out high-level operations for technical service of machines. (Conclusions). The most promising enterprises in the engineering sphere of the agro-industrial complex for the needs of agricultural producers are those equipped with modern technological equipment, intelligent technologies and highly qualified specialists.
THE DESIGN OF THE TOROIDAL PLANETARY TWO-ROW VARIATOR OF VEHICLES WITH INCREASED REQUIREMENTS FOR THE RANGE OF GEAR RATIOS AND SMOOTH RUNNING
Authors:   Federal Scientific Agroengineering Center VIM, Shcherbayev Pavel A. , Fedorova Emiliya A. ,   LLC «Ecoservice»
Published: February 2022

The article presents the design of the toroidal planetary two-row variator, variants of designs of control units of this variators and a method for calculating planetary mechanisms with inclined axes of satellites. (Research purpose) The research purpose is in developing kinematic and schematic diagrams of a two-row planetary variator; formulating and propose the methodology for calculating gear ratios, angular velocities of satellites and geometric transmission parameters; proposing variants of the variator control unit for the purpose of adaptation or unification with agricultural machinery units. (Materials and methods) The research used data from domestic and foreign authors concerning the design and theoretical description of in-line and planetary friction variators, including toroidal. Authors conducted a patent study of design options for friction planetary variators, the gear ratio of which is changed by changing the position of the satellite axes. Kinematic schemes of the proposed design options were compiled in order to develop a method for calculating gear ratios. (Results and discussion) The article presents the design that can be used in transmissions of transport and traction machines operating in the agricultural sectors. It favorably compares with analogues in small axial and overall dimensions, less wear of friction surfaces and a large range of regulation. The range of such planetary variators, designed on the basis of a combination of increasing and decreasing rows, favorably compares with the range of friction variators with toroidal rolling bodies. The article also presents the methodology for calculating gear ratios that can be used for planetary mechanisms with satellite axes that are not parallel to the main axis of the mechanism. A parametric scheme allows you not only to obtain the values of the variator gear ratios for given geometric parameters, but also to calculate these parameters automatically at the required gear ratios. (Conclusions) The developed concept of a combination of series gear ratios can be applied in the designs of planetary variators and used as a basis in further scientific developments.
IMPROVEMENT OF TECHNOLOGY AND EQUIPMENT FOR INCREASING THE REPAIR QUALITY OF CYLINDER LINERS OF AUTOMOTIVE ENGINES
Authors:   Stavropol State Agrarian University, Baganov Nikolay A. , Pavlyuk Roman V. , Zakharin Anton V. , Zubenko Elena V. , Zhevora Yuriy I. , Glebova Ekaterina N.
Published: February 2022

The article presents the developed technology and equipment for vibration honing of cylinder liners of automotive engines. The device is attached to the spindle head of the machine between the spindle and the hone of the honing machine. The roughness of the treated working surface of the sleeves is reduced and the lubrication conditions of the sleeve–piston ring coupling of the connecting rod-piston group of automotive engines are improved after repair. (Research purpose) The research purpose is to improve the technological process of honing cylinder liners in order to reduce the time for processing the inner surface and improve technological parameters. (Materials and methods). The final honing of the inner surface of the cylinder liners was carried out by the method of flat-topped honing with graphite saturation of the inner surface of the liners. The article presents the design of a honing head with abrasive-filled polyamide threads for flat-topped honing of the inner surface of the cylinder liners of automotive engines. The use of the proposed head makes it possible to reduce mechanical losses and increase the service life of the sleeve-piston of KAMAZ-740 engines during repair. (Results and discussion) In order to increase the wear resistance of the cylinder liners of automotive engines, it was proposed to additionally carry out patching of the inner surface during the repair process. The applied layer has one hundred percent extreme pressure resistance with a counter-coupling part (piston ring). Tests during the running-in and operation of the D-240 engines showed high (1.2-1.4 times) wear resistance of cylinder liners after brassing in comparison with liners restored according to standard technology. (Conclusions) The results of the study indicate the expediency of applying the developed recommendations for improving technology and equipment at repair and technical enterprises of the agro-industrial Stavropol Territory. The calculation of the economic efficiency of improving the technology and equipment for repairing the cylinder liners of automotive engines at the site in the AOOT "Repairman" showed the expediency of increasing their wear resistance and the resource of the connecting rod-piston group.