bluuebunny/crossref_metadata_2025 huggingface dataset:
EFFECT OF CAVITATION PROCESS ON THERMAL COMFORT PROPERTIES OF DENIM FABRICS
Authors: TASTAN Esra , MERİÇ KAPLANGİRAY Binnaz
Published: April 2023

The process, which is defined as ultrasonic treatment or cavitation, ensures that the dirt is removed from the surfaces without damaging the fabric surface. There are studies on the ultrasonic washing processes of denim fabrics in the literature, but there is no study on the effect of the cavitation process on the thermal comfort of denim fabrics. For this purpose, denim fabrics were treated at three different times, 15, 30, and 45 minutes, and at two different frequencies 8khz and 16khz in the ultrasonic homogenizer test device. It was observed that the applied cavitation process reduces the air permeability, thermal conductivity, and thermal absorptivity values. On the other hand, the cavitation process increased the water vapour permeability value by cleaning the materials such as dirt and oil on the surface. It can be concluded that the applied cavitation process provides comfort by enabling quick throwing of the sweat to the outer surface, provides less heat conduction from the fabric, and the denim fabric felt warmer after the cavitation process.
STEM Club Evaluation Scale: Validity and Reliability Study
Authors: Gokce Hasan , Eroglu Seyide , Karaca Melek , Bektas Oktay
Published: April 2023

In STEMNET's report, 76% of 500 teachers interviewed stated that joining the STEM Club increased students' ability to solve real-world problems. This study aims to develop a valid and reliable measurement tool for evaluating STEM clubs. The research sample consisting of 149 teachers who carry out STEM club activities in schools in Turkey was determined using the purposive sampling method. Content and construct validity and reliability analyses have been performed for this purpose. To ensure content validity, (1) a pool of questions based on the literature was created, (2) draft scale items were determined, (3) an expert was allowed to check them, and (4)item difficulty and discrimination index were calculated. To ensure construct validity, (1) exploratory factor analyses (EFA) and (2) confirmatory factor analyses (CFA) were performed on both the same and different samples. As a result of the analyses, having the same data set be analyzed with different software was sufficient for verifying the factor structure. A three-factor structure consisting of 29 items was obtained, which explains 52% of the variance. Cronbach’s alpha of reliability for the overall scale was calculated as .92. As a result, a valid and reliable scale was determined to have been developed for researchers and program practitioners to evaluate STEM clubs. Suggestions have been made that the scale can be used on STEM clubs at the provincial, district, and school levels to determine their efficiency and productivity.
An Interdisciplinary Renewable Energy Education: Investigating the Influence of STEM Activities on Perception, Attitude, and Behavior
Authors: Hiğde Emrah
Published: April 2023

The study aimed to examine the effects of design-based STEM activities developed for renewable energy sources on science teacher candidates' perceptions, attitudes, and behavioral orientations. The one-group pretest-posttest design was used. The participants comprised 40 second-grade teacher candidates studying at a public university, and the study lasted for 14 weeks. The data were collected using a renewable energy perception scale, renewable energy sources attitude scale, sustainable consumption behavior scale, and STEM product-performance observation form. The results demonstrated that design-based STEM activities towards renewable energy sources enhanced teacher candidates' perception, attitude, and behavior toward renewable energy sources. However, there was no statistically significant increase in the unneeded consumption sub-dimension of the sustainable consumption behavior scale and the renewable energy-environment relationship sub-dimension of the renewable energy perception scale.
Augmented Reality and Animation Supported-STEM Activities in Grades K-12: Water Treatment
Authors: Dönmez Usta Necla , Ültay Neslihan
Published: April 2023

Animation is used to increase the interest and engagement of students in the learning environment. Animation is exciting and fun, and using animation, abstract concepts are easy to present, display, and convey to students. Augmented reality, like animation, can help make it easier to understand abstract concepts. In many areas, augmented reality is used in education since it perfectly integrates virtual content with the natural world. STEM education is one of the areas where augmented reality can be used effectively. In this context, this research aimed to reveal the fourth-grade students' opinions about augmented reality and animation-supported STEM activities on the "Water Treatment" topic. These  STEM activities were carried out with 15 (7 females, 8 males) fourth-grade students from a primary school in Turkey and lasted for 6 lesson hours. This study is a case study. As data collection tools in the study, the Know-Want-Learned chart, and the Application General Evaluation Form, which consists of eight open-ended questions developed by the researchers, were used. Based on the study's findings and the researchers' observations, it was determined that the augmented reality and animation-supported STEM activities are appropriate for acquisition, content, application, active participation, duration, and student level. In addition, the activities were enjoyable, humorous, engaging, and exciting. It is recommended in this context to conduct similar studies on different disciplines or concepts.
The Effectiveness of STEM-Supported Inquiry-Based Learning Approach on Conceptual Understanding of 7th Graders: Force and Energy Unit
Authors: Bakirci Hasan , Kirici Merve Gül , Kara Yilmaz
Published: April 2023

This research examines the effectiveness of the STEM Supported Inquiry-Based Learning Approach on the conceptual understanding of 7th graders. In the study, a mixed-method design was adopted. The research was carried out with 64 students studying in a secondary school. The study used a Conceptual Understanding Test (CUT) and an Interview Form as data collection tools. Quantitative data obtained in the research were analyzed using ANCOVA and T-test. Qualitative data were proceeded by subjecting them to content and descriptive analysis. Examining the study results, STEM Supported Inquiry-Based Learning Approach increased students’ conceptual understanding in the experimental group and the Inquiry-Based Learning Approach in the control group. It was determined that the science teaching in the experimental group was more effective in the conceptual understanding of 7th graders. The students stated that the science teaching in the experimental group was fun, created excitement, made them feel happy, instilled cooperation and team spirit, and thought by doing and living. Depending on the results obtained from the research, it was implicated that STEM-supported education should be carried out by determining the engineering design process steps suitable for the middle school level.
The Effect of Out-of-School Learning Activities on Gifted Students’ Affective and Behavioral Tendencies Towards The Environment
Authors: Ayaydin Yakup , Şeşen Burçin Acar , Erdoğan Sezen Camci , Ün Duygu , Özçiriş Hakan
Published: April 2023

This study investigates the effect of out-of-school activities on gifted students' affective and behavioral tendencies. Mixed method research with a single group pre and post-test experimental design was used in this study. Twenty-five gifted students from Turkey-İstanbul participated in this study. “Environmental Affect Scale” and “Environmental Behavior Scale” were used, and semi-structured interviews were conducted. Results showed that out-of-school activities positively affected the students’ affective and behavioral tendencies toward the environment. It was also found that the awareness of students on environmental problems increased, and they began to produce their solutions to these problems.
Bilayered Electrolyte for Intermediate-Low Temperature Solid Oxide Fuel Cell: A Review
Authors:   Fuel Cell Institute, Universiti Kebangsaan Malaysia, Malaysia, Baharuddin Nurul Akidah , Muchtar Andanastuti ,   Centre for Engineering Materials and Smart Manufacturing (MERCU), Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Malaysia, Panuh Dedikarni ,   Department of Mechanical Engineering, Faculty of Engineering, Universitas Islam Riau, Indonesia
Published: April 2023

Fuel cell is an energy converter device that generates electricity through electrochemical reaction between hydrogen and oxygen. An example of fuel cell is the solid oxide fuel cell (SOFC) which uses a ceramics based solid electrolyte. Due to the use of ceramics, SOFC normally operates at high temperatures up to 1000 °C. This high operating temperature makes SOFC known for its efficient energy conversion capability and excellent fuel flexibility. However, despite the advantages, the extreme temperatures limit the uses of SOFC. High operation temperature leads to long term operational issues in durability and cell degradation. Yttria stabilized zirconia, YSZ is a commonly used material for electrolyte in high temperature SOFCs. However, YSZ electrolyte is unable to perform well when the operating temperature is reduced to intermediate-low zones below 800 °C. Thus, development of new materials for SOFC components is needed whereby the production of electrolyte materials becomes one of the main scopes for research in intermediate-low temperature SOFCs. Apart from the synthesis of new materials, another approach in increasing the ionic conductivity of intermediate-low temperature SOFC is through the fabrication of a bilayered electrolyte. As such, this review article focuses on the potential of bilayered electrolyte for intermediate-low temperature SOFCs
A Short Overview Current Research of Catalyst for Methanol Oxidation Reaction in Direct Methanol Fuel Cell (DMFC) from Experimental and Theoretical Aspect
Authors:   Fuel Cell Institute, Universiti Kebangsaan Malaysia, Malaysia, A. Karim Nabila , Yahya Norilhamiah ,   Malaysian Institute of Chemical and Bioengineering Technology, Universiti Kuala Lumpur, Malaysia
Published: April 2023

Direct Methanol Fuel Cell (DMFC) has shown a great development to replace fossil fuel as new alternative of power sources. However, there are still many issues need to overcome to achieve the dream of world use no more fossil fuel for power sources. One of the main issues is slow catalytic activity of methanol oxidation reaction in anode DMFC. There are several studies of catalysts for methanol oxidation reaction other than Platinum-Ruthenium (PtRu). Finding the catalyst that is cheaper and high reactivity towards methanol oxidation reaction is recommended. The catalyst synthesized should be tested on durability for a long period of time. The selection of catalyst support also affect in methanol oxidation reaction activity in DMFC. Catalyst support must have characteristics in high surface area, conductivity and strong interaction between support and catalyst to prevent leaching problem during long-term operation in DMFC. Several metal alloys and support catalyst has been review in this paper together with discussion about durability of the catalyst. In addition, the DFT study to find the most stable condition of methanol adsorption to occur is highly encouraged. The determination of mechanism reaction using DFT is important in which different pathways will give different activation energy during methanol oxidation reaction. This short overview presented the current research of new catalysts for methanol oxidation reaction.
Powder and Electrical Properties of La0.6Sr0.4CoO3-δ Cathode Material Prepared by a Modified Sol-Gel Method for Solid Oxide Fuel Cell Application
Authors:   Fuel Cell Institute Universiti Kebangsaan Malaysia Malaysia, Samat Abdullah Abdul , Wan Yusoff Wan Nor Anasuhah ,   Fuel Cell Institute Universiti Kebangsaan Malaysia Malaysia, Norman Nur Wardah ,   Fuel Cell Institute Universiti Kebangsaan Malaysia Malaysia, Somalu Mahendra Rao ,   Fuel Cell Institute Universiti Kebangsaan Malaysia Malaysia, Osman Nafisah ,   Fakulti Sains Gunaan, Universiti Teknologi MARA, Malaysia
Published: April 2023

The powder properties and electrical conductivity of lanthanum strontium cobalt oxide, La0.6Sr0.4CoO3-δ (LSC) material were systematically characterized with respect to application as cathode material for intermediate temperature solid oxide fuel cell (SOFC). The LSC was prepared via a modified sol-gel method assisted with a combination of ethylene glycol and activated carbon as a chemical additive. The decomposition of impurity compounds such carbon compounds and nitrates in the precursor powder was completed at 870 °C as revealed by thermogravimetry (TG) analysis. As the calcination temperature increased from 800 °C to 1000 °C, the purity and crystallite size of the the calcined precursor powder also increased as confirmed by X-ray diffrcation (XDR) analysis. The micrograph of scanning electron microscope (SEM) image showed that the particle of the calcined powders form agglomeration and this led to low relative density (80.18 %) of the sintered LSC pellet at 1200 °C. The direct current electrical conductivities (σdc) of the sintered LSC pellet measured using Van der Pauw technique in air were 1504 S cm-1 and 1069 S cm-1 at 400 °C and 800 °C, respectively. The relatively high σdc with low activation energy (Ea) of 0.021 eV indicates that the LSC prepared in this work has a great potential to be used as a cathode material for intermediate temperature SOFC application.
Nanocatalyst FeN4/C Molecular Orbital Behaviour for Oxygen Reduction Reaction (ORR) in Cathode Direct Methano Fuel Cell (DMFC)
Authors:   Fuel Cell Institute Universiti Kebangsaan Malaysia, Malaysia, Basri Sahriah , Kamarudin Siti Kartom ,   Chemical Engineering Programme, Faculty of Engineering & Build Environment, Universiti Kebangsaan Malaysia, Malaysia
Published: April 2023

Approaching commercialization phase of Direct methanol fuel cell (DMFC) technology, developing high kinetic rate active area with inexpensive non-precious metal catalyst (NPMC) for ORR catalyst materials to replace currently used Pt-based catalysts is a compulsory and crucial requirement in order to reduce the catalyst and overall system cost. Thus, the objective of this study is to describe the molecule orbital behavior of NPMC FeN4/C and discuss of recent works in the area of non-precious metal electrocatalys for ORR. Several important kinds of free energy study for carbon supported non-precious metal electrocatalys for ORR by using density functional theory (DFT) in CASTEP module analysis. The properties of FeN4/C nanocatalyst were studied, and their energy properties, band structure and density of state were evaluated accordingly. Besides, electronic properties of the nanostructure of FeN4/C also calculated. The results indicated that optimized geometry shows the oxygen in 3.699 Ao from the catalyst opposite with the Fe atom. Moreover, HOMO occurs in the orbitals 173 and LUMO occur in orbitals 174 and the band gap -0.82 proved that FeN4/C nanostructure catalyst is conductive and suitable to use as catalyst in fuel cell.
Structural and Morphological Study of Sulfonated Graphene Oxide Prepared with Different Precursors
Authors:   Fuel Cell Institute Universiti Kebangsaan Malaysia, Malaysia, Yusoff Yusra Nadzirah , Samad Shuaiba ,   Fuel Cell Institute Universiti Kebangsaan Malaysia, Malaysia, Shyuan Loh Kee ,   Fuel Cell Institute Universiti Kebangsaan Malaysia, Malaysia, Khoon Lee Tian ,   Fuel Cell Institute Universiti Kebangsaan Malaysia, Malaysia
Published: April 2023

In this study, graphene oxide (GO) as nano sized filler to improve the properties of polymer electrolyte membrane was synthesized via the modified Hummers method. Hummers is the most common method used to synthesize GO. The GO is produced by exfoliation of graphite oxide under sonication method. Dispersion by sonication method shows mechanical disruption that breaks apart the graphite flakes which is then sterically stabilized in the base solution. The as-synthesized GO will be sulfonated using different precursors, namely (3-mercaptopropyl)trimethoxysilane (MPTMS), butane sultone (BS) and sulfanilic acid (SA). The structure and morphology of GO and sulfonated GO (SGO) were investigated in details by using Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). FTIR analysis confirmed the presence of several functional groups such as hydroxyl, epoxy, carbonyl, carboxyl and sulfonic acid group. The obtained SEM and TEM images indicated, that the morphology of GO dispersion is folded, multilayered and crumpled with some wrinkles. The morphology of SGO showed a folded, thicker and overlap surface compared with GO sheets. Based on TEM image, the addition of sulfonic acid group into the GO network reveals the black spot on the sheets surface. This SGO will act as a potential base material for the application of solid acid catalyst, water purification as well as a composite in membrane fabrication.
HOW DOES DEMOCRATIC LEADERSHIP EFFECT ORGANIZATIONAL TRUST IN HOSPITALITY BUSINESSES? THE MEDIATING ROLE OF ORGANIZATIONAL COMMUNICATION
Authors: Demir Filiz , Tekeli Mehmet , Kırıcı Tekeli Ezgi
Published: April 2023

The aim of the research is to determine the effect of democratic leadership perception on organizational trust and the mediating role of organizational communication in this relationship. In this context, a field study was conducted on the employees of three-, four-, and five-star hotels in Konya and Karaman provinces. A total of 394 questionnaires were collected by using the questionnaire technique and convenience sampling method. The data were analyzed using appropriate analysis programs. Consequently, it has been determined that there are strong positive relations among democratic leadership, organizational trust and organizational communication. As a result of the structural equation modeling, it was determined that democratic leadership perceived by employees has a positive effect on organizational trust and organizational communication. Besides, it has been determined that employees’ perception of organizational communication has a positive effect on the formation of organizational trust. Also, the mediating effect was checked with the bootstrap test and it was concluded that the mediating effect of organizational communication is significant in the effect of democratic leadership on organizational trust. Finally, the conclusions were handled within the scope of theoretical and practical contributions and some suggestions were made for future researchers and the sector.
Surgical outcomes of patients with acetabular fractures and quadrilateral plate involvement
Authors:   City clinical hospital named after S.P. Botkin, Moscow, Russian Federation, Donchenko S.V. , Kolesnik A.I. ,   CYTOPROJECT LLC, Moscow, Russian Federation, Surikov V.V. ,   City clinical hospital named after S.P. Botkin, Moscow, Russian Federation,   Russian Medical Academy of Continuous Professional Education, Moscow, Russian Federation, Ivanov D.A. ,   Lytkarino city hospital, Moscow region, Russian Federation, Tarasov E.P. ,   Odintsovo city hospital, Moscow region, Russian Federation, Yarmamedov D.M. ,   Kursk State Medical University, Kursk, Russian Federation, Solodilov I.M. ,   Kursk city clinical hospital No. 4, Kursk, Russian Federation
Published: April 2023

Background Open reduction and internal fixation (ORIF) remain the standard method of treating acetabular fractures. Many authors report poor results in quadrilateral plate fractures of the acetabulum with the use of ORIF. The objective was to evaluate outcomes of quadrilateral plate fractures of the acetabulum. Material and methods Surgical outcomes of 55 patients with quadrilateral plate fractures of the acetabulum were retrospectively reviewed between 2009 and 2019. Early postoperative results were followed up in 55 patients. Surgical treatment was provided for 32 (58.2 %) control patients with acetabular fractures and 23 patients (41.8 %) with quadrilateral plate fractures of the acetabulum in the main group. Long-term results were explored in 45 patients aged 18 to 60 years with acetabular fractures (control group, n = 24) and in combination with quadrilateral plate involvement (main group, n = 21). Results Surgical interventions were performed by one team consisting of the same specialists. Surgical outcomes in oth clinical groups were evaluated according to 11 criteria. Discussion The results of surgical treatment of acetabular fractures and quadrilateral plate involvement were associated with the negative impact of quadrilateral plate involvement on the duration and volume of blood loss, intraoperative and late complications and dynamics in the development of post-traumatic hip arthrosis. The results obtained were comparable with the data of the itation sources. Conclusion A comparative analysis of the outcomes suggested a negative impact of quadrilateral plate involvement on the results of surgical treatment and an objective necessity to rank quadrilateral plate fractures of the acetabulum as a risk factor for adverse outcomes with ORIF.
The possibilities of drilled tunneling in the treatment of knee joint osteoarthritis
Authors:   City Polyclinic No. 51, Saint-Petersburg, Russian Federation, Baranovskii A.A. , Balgley А.G. ,   North-Western Mechnikov State Medical University, Saint-Petersburg, Russian Federation, Tkachenko A.N. ,   North-Western Mechnikov State Medical University, Saint-Petersburg, Russian Federation, Mansurov D.Sh. ,   Samarkand State Medical University, Samarkand, Uzbekistan, Khromov A.A. ,   North-Western Mechnikov State Medical University, Saint-Petersburg, Russian Federation
Published: April 2023

Introduction Surgical treatment of knee osteoarthritis is a controversial issue. Knee replacement is the treatment of choice in the orthopedic practice for patients with severe knee osteoarthritis. However, total knee arthroplasty (TKA) has not only beneficial results and implant survivorship is limited in time. In recent years, the number of publications devoted to the limitation of indications for TKA in patients with osteoarthritis has been increased. The use of drilled tunneling in its modern modifications enables to delay or, in some cases, avoid knee joint arthroplasty. Purpose To substantiate the safety, low invasiveness and effectiveness of the tunneling method as a minimally invasive organ-preserving treatment for knee joint osteoarthritis. Materials and methods The electronic Pub-Med/MEDLINE and eLibrary databases were searched for works published for the last 30 years. The search was carried out with keywords and phrases: knee joint osteoarthritis, articular cartilage, bone drilling, arthroscopy of the knee joint. Results The effectiveness of tunneling is based on the concept of simultaneous revascularization, drainage and decompression of the subchondral sections of the knee joint and the medullary cavity of the tubular bones. Up to 96 % of patients report a positive effect of tunneling immediately after surgery. Intraosseous pressure decreases for up to 2 years in 88 % of patients. Discussion The tunneling method in the treatment of knee osteoarthritis helps to reduce pain in the projection of the femur and tibia, including night pain, improves the functional parameters of the joint, inhibits the progress of cartilage destruction, improves the quality of life of patients and reduces the need for replacement of the affected joint. In addition, tunneling does not require serious economic costs. Due to the fact that this method is a minimally invasive surgical intervention, the risk of infection is noticeably lower than with TKA. Conclusion Thus, the tunneling of the articular ends is a simple, safe, low invasive and effective method of treating knee joint osteoarthritis.
Factors Related to Drug Overdose Deaths in Ohio
Authors: Borgemenke Samuel
Published: April 2023

Background: Drug overdoses have had a devastating impact on public health in Ohio. Improving our understand-ing of the relationships between factors that are associated with drug overdose deaths can enhance the quality of public policy and health care reach in Ohio.
Methods: Utilizing data from the Centers for Disease Control and Prevention (CDC) and University of Wisconsin Population Health Institute, this research seeks to quantify the associations between the drug overdose rate for counties in Ohio with various factors via statistical regressions.
Results: The overwhelming majority of drug/alcohol overdose deaths during the years 2017-2019 were uninten-tional. Drug overdose deaths and life expectancy are strongly associated. Communities with higher overdose rates have lower life expectancies. Socioeconomic status and health care factors, such as mental distress and physical inactivity, are significantly correlated with increased drug overdose deaths. Household income is significantly correlated with increased access to health care, implying that communities of lower socioeconomic status may lack adequate access to quality care and suffer from increased overdose deaths.
Conclusion: The data indicate the importance of access to health care and health care providers in response to drug overdoses in Ohio. Health care access is currently proportional to income; higher income households have a greater proportion of insured, as well as a greater number of primary care physicians. Thus, implementing policies that support health care infrastructure should be prioritized to increase the capacity of treatment in under-resourced (low-income and low socioeconomic status) communities.
INFLUENCE OF COLD ARGON PLASMA ON DIELECTRIC PARAMETERS OF RAT SKIN
Authors:   FSBEI HE Volga Research Medical University of the Ministry of Health of the Russian Federation, Martusevich A. K. ,   FSBEI HE "Nizhny Novgorod State Agricultural Academy", Surovegina A. V. ,   FSBEI HE Volga Research Medical University of the Ministry of Health of the Russian Federation,   FSBEI HE "Nizhny Novgorod State Agricultural Academy", Nazarov V.V. ,   FSBEI HE Volga Research Medical University of the Ministry of Health of the Russian Federation,   FSBIS Federal Research Center Institute of Applied Physics of RAS
Published: April 2023

The purpose of this study was a comparative study of dielectric parameters of rat skin treated with argon and cold argon plasma. The experiment was carried out on 40 male Wistar rats divided into 4 equal groups. The first group of animals (n=10) was the control (intact). A pre-epilated area of the back skin (area = 1*1 cm) of the rats of the remaining groups (n=10 in each) was treated daily. The course duration for all experimental groups was 10 procedures. Animals of the second group received treatment with non-ionized argon flow (the duration of one procedure is 1 minute), rats of the third and fourth groups received cold argon plasma (1 and 2 minutes, respectively). Cold plasma was generated using a device that uses the principle of microwave ionization of a gas stream. As the latter, high purity argon (99.99%) was used. The assessment of the dielectric parameters of the skin in the treated area (for rats of the control group - in a similar part of the back) was carried out after the completion of the full course of the exposure. A specialized software and hardware complex was used for this, which provides near-field resonant microwave sounding of biological tissues. It was established that the course treatment of the skin area of the rats’ back with gas flows with different ionization causes formation of a specific functional-metabolic and morphostructural response. Its character is determined by the parameters of the gas flow used: non-ionized argon significantly reduces the dielectric parameters (permeability and conductivity), and the result of the action of cold argon plasma depends on the exposure. In case of one-minute treatment, the preservation of tissue permeability at an intact level was observed with a moderate decrease of conductivity. In the case of 2 minute exposure, the dielectric capacitivity increased, while the conductivity remained unchanged.
SPECIFICATION OF PARAMETERS OF RANDOM INTERACTION OF SOLID PARTICLES AND SUSPENSION DROPS IN A CHAMBER FOR SEED PROCESSING WITH BIOLOGICAL PRODUCTS
Authors:   FSBEI HE ", Sabirov R. F. ,   Kazan State Agrarian University"
Published: April 2023

The article observes a new pneumomechanical seed treating machine, adapted to work with biological products, the main components of which are the treatment chamber and the sprayer of working composition. The design and operation principle of the treatment chamber, the sprayer of the working composition of the biological product, the hydraulic and pneumatic systems of the device are described. A wide range of spraying pressure adjustment, as well as a gentle pneumatic method of applying the working preparation onto seeds allows the use of biological products for preparing seeds for sowing. Theoretical studies are given to determine the distribution uniformity of liquid droplets on seeds at first contact, depending on the porosity of the fluidized bed, the angle of the nozzle, the infill degree of the treatment chamber and its geometric parameters. The probability of a drop absorption by a caryopsis is substantiated, taking into account the fact that the drop is much smaller in size than the seed. An algorithm for numerical computation of wetted seeds is proposed, as well as variational distribution range (frequency polygon), average value, mean-square deviation and variation coefficient of drops on a caryopsis. According to the above algorithm, an application for Windows was developed in the C# language and in VisualStudio environment - a program that implements a numerical experiment and its statistical processing. Appropriate nozzle installation angle γ=0⁰ and the height of the fluidized bed hz1=0.07 m were determined.
INFLUENCE OF GROWTH-REGULATING PRODUCTS ON PRODUCTIVITY OF SPRING BARLEY
Authors:   FSBEI HE ", Ryabtseva N. A. ,   Don State Agrarian University"
Published: April 2023

The vector of biologization in agriculture of the Russian Federation and its focus on organic agriculture emphasize the relevance of the conducted research. It reflects the results of the experiment in 2016-2020 and the results of 2021 of the effect of growth-regulating products on the elements of spring barley crop structure on common black soil in the conditions of Rostov region. The studied products are: Biodux; Trainer; Artafit; Obereg; Fulvohumate. The control is water treatment. Barley agrocenoses were sprayed according to the recommendations: 1st - in the tillering phase, 2nd - in the heading phase. The barley forecrop is sunflower. The area of the experimental plot is 600 m2. The placement of variants is sequential on 25 m2 in a 4-fold repetition. As for Leon variety, it was found that barley field germination in field conditions was 88%. Double treatment of the agrocenoses with growth-regulating product contributed to better plant survival by harvesting time (more than 80%), in particular, with Biodux and Obereg (86 and 87%, respectively). Formation and growth of productive stems up to 1.28-1.33 was observed after the first spraying in the tillering phase. The second spraying in the stalk-shooting phase contributed to formation of heavy grain, Obereg impact was especially outstanding, where the mass of a thousand of grains exceeded the control by 2.9 g. The application of growth-regulating biological products increased the number of grains per head (on average, 1 pc more than in the control). It can be concluded that there is yield increase under the influence of growth-regulating products due to all elements of barley productivity, especially under the influence of Obereg and Biodux.
JUSTIFICATION OF HEAT AND ENERGY PARAMETERS OF CONTACT DRYING PROCESS OF GRAIN
Authors:   FSBEI HE Ulyanovsk SAU, Ageev P.S. , Dolgov V.I. ,   FSBEI HE Ulyanovsk SAU, Kurdyumov V.I. ,   FSBEI HE Ulyanovsk SAU, Pavlushin A.A. ,   FSBEI HE Ulyanovsk SAU
Published: April 2023

The purpose of the research is to identify factors that directly affect the thermophysical characteristics of the developed means for grain contact drying. In case of system analysis, this goal is achieved by widespread usage of modeling, which allows to substantiate not only the parameters of the appropriate process mode, but also to choose the most suitable way to control the drying process under production conditions. The conditions for heat transfer from the heating surface to the grain depend on the heat given off by the heating surface of the drying chamber, W; heat transfer coefficient W/(m2 ºС), temperature of the heating surface and the grain at the outlet from the drying chamber, °С; heating surface area, m2. In addition, in case of contact heat transfer, the problem of grain heating is linear (tgr2 = f(z, )), where z is the distance from the grain to the heating surface, m;  - time from the drying process start, s. It was found that the heating temperature limit of the surface of the drying chamber (made in the form of a cylinder, with a screw transporting working body) should not exceed 61С to ensure the grain temperature at the chamber outlet of 39С. In case of using a belt conveyor in the drying chamber and if it is in the form of a rectangular parallelepiped, the temperature limit of the chamber surface heating is 69 С. When the drying chamber is made in the form of a stepped surface enclosed in a box with vibration induction of grain movement, the heating temperature of this surface can be increased to 129 С without harm to the dried grain quality. It also allows to increase the throughput of the device compared to the first version of the drying chamber: from 0.2 t/h to 0.4 t/h.
O Empoderamento Feminino no Processo de Rompimento do Ciclo de Violência Doméstica
Authors: Bezerra Mariana Ferreira , Saldanha Carla Figueiredo Marinho
Published: April 2023

O presente artigo é resultado do recorte estabelecido na pesquisa que vem sendo realizada junto a uma rede de mulheres vítimas de violência doméstica no município de Igarapé Açú, localizado na Região Nordeste do Estado do Pará. O mesmo visa compreender como mulheres que se encontravam em relacionamentos violentos conseguiram se ‘desvencilhar’ de seus agressores, tendo o empoderamento feminino como ponto de partida. Para isso, além da leitura realizada que direcionou nosso olhar, foi realizado o mapeamento das interlocutoras, que nos narraram suas histórias de vida, expandindo assim as possibilidades de análise. Analisar a partir dessa perspectiva nos fez entender a importância do empoderamento no combate à violência doméstica, pois, ao realocar os focos de poder, recupera a autoestima e possibilita a iguadade entre os gêneros.
Impactos da Pandemia e da Violência de Gênero para Mulheres em Situação de Privação de Liberdade
Authors: Assunção Elizete Cardoso
Published: April 2023

Há décadas, a mulher vive em uma cultura de submissão imposta por uma sociedade patriarcal que naturalizou a desigualdade entre ela e o homem. O caráter determinista do comportamento feminino inscreveu no corpo da mulher o sentido de objeto e a violência de gênero é muito presente nos dias atuais. Quando se trata das mulheres presas, esse quadro foi ainda mais agravado pela pandemia da Covid 19. Este estudo buscou discutir e denunciar as formas de violência por elas enfrentadas, suas causas e consequências e destacar a importância da educação no espaço prisional, especificamente no Centro de Reeducação Feminino (CRF) em Belém/Pa., por meio do Projeto de Remição de pena A Leitura que liberta como ferramenta fundamental para a luta contra a opressão feminina.
Relações de Gênero e Empoderamento do Futebol Feminino
Authors: Sales Reinaldo Eduardo Da Silva , Leal Mayara Mendes , Silva Ítalo Fabiano Correa , Silva Paulo Henrique Garcia da
Published: April 2023

O artigo apresenta a pesquisa e os resultados de um estudo sobre sociabilidade, relações de gênero e diferentes papéis exercidos pelas mulheres da agrovila de Trindade, em Santa Izabel, no Pará. O ponto de partida foi o futebol feminino, prática que reafirma suas condições sociais e as empodera. O estudo ocorreu com 8 mulheres que preferiram ficar no anonimato e, através de uma roda de conversa com um roteiro de entrevista aplicado, demonstrou que as mulheres utilizam o futebol como forma de sociabilidade coletiva, processo que influencia diretamente na permanência do futebol na comunidade. As relações de gênero relegam às mulheres papéis sociais subalternos e inferiores e, para superá-los, utilizam do futebol para melhorar sua autoestima, para realização pessoal e empoderar-se socialmente.
Grupos de Reflexão para Mulheres que Sofreram Violência Doméstica: um estudo de campo
Authors: Paiva Elza Beatriz Barros de , Souza Julio Cesar Pinto de
Published: April 2023

A violência doméstica contra a mulher é um fenômeno de caráter sócio-histórico que deixa inúmeras sequelas, e as de cunho psicológico são as que os grupos de reflexão são voltados à enfrentar mais diretivamente, proporcionando um espaço de acolhida, de informação e de partilha de experiências. Este trabalho tem como objetivo geral compreender a atuação dos grupos de reflexão no empoderamento de vítimas de violência doméstica e as mudanças ocorridas nas mesmas, em razão do grupo. A pesquisa é de abordagem qualitativa, de caráter descritivo e de campo. Os instrumentos utilizados foram a entrevista semiestruturada e a observação participante.
Minervina: representação de uma mulher negra marajoara em As Ruínas de Suruanã, de Sylvia Helena Tocantins
Authors: Souza Paula Fernanda Pinheiro
Published: April 2023

O texto tem como objetivo analisar as vivências femininas da personagem Minervina, mulher negra marajoara, do romance As Ruínas de Suruanã: Romance Marajoara (1987), da escritora paraense Sylvia Helena Tocantins. Para discorrer sobre mulheres racializadas, serão utilizadas as contribuições teóricas de intelectuais como: Oyèrónké Oy?wùmí (2021), Lélia Gonzalez (2020), Maria Lugones (2020) e outras. Desse modo, será dado destaque a Minervina, mulher negra vista apenas como uma “mulata” pelos homens que detinham poder na sociedade marajoara das grandes fazendas. Os coronéis, por meio do poder que possuíam, subalternizavam todas as mulheres, brancas e racializadas; sendo que a mulher racializada, indígena e negra, era duplamente oprimida. Nesse contexto social, Minervina se destaca em vários aspectos, como sua singularidade, resistência e saberes afro-indígenas.
Izabel é Dona de Si e Não se Rende: produção de corporalidades e moralidades em Bragança/PA (1916-1940)
Authors: Campos Alessandra Patricia De Oliveira Dias
Published: April 2023

Não obstante os esforços do Estado para que o corpo fosse prioritariamente associado às atividades laborais, as mulheres não se renderam às limitações que se buscava estabelecer e, de diferentes maneiras, fizeram emergir as suas vontades ocupando lugares e vivenciando experiências que lhes permitissem aproveitar o tempo livre em atividades de lazer e diversão. Porém, estas movimentações não passaram despercebidas pelas autoridades da Comarca de Bragança, tampouco pela comunidade que convivia com estes corpos "devassos". Nesta perspectiva, a partir da análise de processos de defloramento e rapto impetrados na Comarca de Bragança entre 1916 e 1940, buscou-se compreender como os enredados em ações criminais interpretaram os corpos das mulheres e os dos homens e os classificaram de maneiras distintas, avaliando como honestos os dedicados ao trabalho e, na faculdade de libertinos, os que se entregaram às atividades vislumbradas como fontes de satisfação e deleite.
Sexualidade e Gênero: possibilidades para pensar a prática de professores homens na educação infantil
Authors: Silva Renan Mota , Vasconcelos Tatiane Da Rosa , Pinheiro Anderson Silva
Published: April 2023

Este artigo discute as questões de gênero, sexualidade, educação infantil e a atuação do professor homem inserido nesse contexto. O objetivo é refletir sobre os desafios que se apresentam para a prática de professores homens na educação infantil, a fim da necessidade de abrir espaço para novas construções teóricas que resgatem o caráter plural e polissêmico sobre o tema. A metodologia utilizada neste artigo consiste em uma abordagem qualitativa, diante do preconceito que esses profissionais enfrentam, a partir da articulação de estudos que atravessam as temáticas das masculinidades e dispositivos de gênero. Desse modo, desenvolver o debate em torno da construção histórica e social da prática pedagógica que envolve o gênero masculino permite dar visibilidade a estes sujeitos. Conclui-se que, para compreender as possibilidades em relação ao papel do professor homem na educação infantil, é necessário também articular novas construções teóricas e estratégias de capacitação/formação docente.
Tia Pê (1915-1976): mulher, identidade negra e cultura do carimbó amazônico paraense na cidade de Vigia
Authors: Cordeiro Raimundo Paulo Monteiro , Amaral Assunção José Pureza
Published: April 2023

Este artigo objetiva apresentar e discutir a última das Tias do Carimbó Vigiense, a senhora Francisca Lima do Espírito Santo, mais conhecida como Tia Pê (1915-1976), mulher negra, símbolo e identidade da cultura do carimbó amazônico paraense na cidade de Vigia. A metodologia envolve uma revisão bibliográfica, pesquisa documental, análise qualitativa e incursão pela histórica e antiga cidade de Vigia de Nazaré, no Nordeste do Estado do Pará. Dentro os principais autores, destacamos Enrique Dussel (1977), Diegues (1999), Escobar (2005), Vicente Salles (1969), Ramos (2012) e Stuart Hall (2003).
Ativistas, Artistas e Queers no Sul Global: ainda nas margens do Mujeres Al Borde
Authors: Ferreira Glauco B.
Published: April 2023

O presente artigo analisa e discute as interações entre dois coletivos de artistas ativistas, Queer Women of Color Media Arts Project (QWOCMAP), situado nos Estados Unidos, e o Mujeres Al Borde, situado na Colômbia. Centrando-se nas atividades e produções audiovisuais deste último grupo, discute-se como criam relações entre arte, ativismo e produção audiovisual. Além disso, refletindo-se sobre o tipo de atividades realizadas por esses coletivos, pontua-se como materializam políticas e práticas feministas transnacionais ao construírem coalizões ‘contrassexuais’, inter-relacionadas às demandas das comunidades que organizam.
“Eu Sou a Filha da Chiquita Bacana...” notas antropológicas sobre a Festa da Chiquita em Belém do Pará
Authors: Filho Milton Ribeiro da Silva
Published: April 2023

Este artigo versa sobre a Festa da Chiquita, evento profano caracterizado pela ampla participação de LGBT em devoção a Nossa Senhora de Nazaré, padroeira do Estado do Pará, e legitimado graças à mobilização organizativa e à prática discursiva. Nesta perspectiva, intenciona-se mostrar de que forma esta festa, realizada por elas/eles e para eles/elas, diz algo sobre as pessoas e sobre as manifestações políticas engendradas por LGBT no Brasil.
Maternagem e Trabalho em Aline Paim: a espada e a rosa de Catarina
Authors: Lopes Margarete Edul Prado de Souza
Published: April 2023

Nesse artigo, o objetivo principal consistiu em realizar uma leitura, pelo viés dos estudos de gênero, da personagem Catarina, do primeiro volume da Trilogia de Catarina, o romance O sino e a rosa, da escritora sergipana Alina Paim, publicado em 1965, para refletir a importância da maternagem e maternação na vida das mulheres simbolizadas pela protagonista Catarina. Como viés teórico, os termos maternagem e maternação foram adotados do livro de Nancy Chodorow, bem como dois artigos de Elódia Xavier. No resultado, constatou-se que a maternagem continua parte inerente da vida das mulheres mesmo com a solidificação do feminismo nas sociedades ocidentais.
Epistemología de la educación inclusiva o la pregunta por sus dilemas de definición
Authors: Ocampo González Aldo
Published: April 2023

El presente artículo analiza algunos de los dilemas definitorios más relevantes del campo de la educación inclusiva. Sus desarrollos cognitivos actuales no son más que un peculiar sistema de ignorancia sancionada que opera con gran fuerza a través de la metáfora del engañador-engañado, es decir, una espacialidad argumentativa que nace engañada y que produce múltiples formas de engaño. Lo que conocemos como educación inclusiva no es más que una racionalidad que trabaja sin referencias objetivas sobre sí mismas. Lo cierto es que la inclusión es un fenómeno dinámico y variable, cuyos significantes cambian, mutan y se transforman sistemáticamente de acuerdo con el contexto que dialoga. Es esto lo que permite sostener que la inclusión es un concepto maleta –esta metáfora nos informa cómo algo puede servir para múltiples cosas–, con usos y aplicaciones diferentes. Es un fenómeno y un cuerpo de conocimiento no fijo que, a partir de él, permite leer una multiplicidad de categorías teóricas y prácticas sociales. De ello se infiere que no estamos tratando con un cuerpo de conocimientos fijos. El conocimiento auténtico de la educación inclusiva ni su repertorio metodológico pueden escaparse de las relaciones de poder. Ambos están profundamente arraigados en aquello que se proponen comprender. Su conocimiento nunca es políticamente neutral. El trabajo concluye observando que una de las tensiones más relevantes que enfrenta la construcción epistemológica de la educación inclusiva consiste en aprender a utilizar en el trabajo empírico sus fundamentos cognitivos para evitar que su práctica no pueda defender las desigualdades sociales –estructurales y relaciones– que pretende comprender. Tomar la educación inclusiva como cualquier enfoque teórico que analiza problemas sociales puede incurrir en una praxis laxa que conduzca a la producción de más errores que respuestas.
Od stylu i daty do rzeczy i gestu. Kierunki i perspektywy badań nad wnętrzami mieszkalnymi
Authors: Korduba Piotr
Published: April 2023

Tekst dotyczy kierunków i perspektywach badań nad wnętrzami mieszkalnymi w światowej i polskiej nauce ostatnich lat. Związane jeszcze kilka dekad temu z jednej strony z historią architektury, a z drugiej z nurtami badań nad kulturą materialną uzyskały od pewnego czasu autonomiczność, uaktywniono w nich niewykorzystywane dotąd źródła pisane i wizualne. Prekursorami dziejów wnętrz mieszkalnych jako osobnego kierunku badań był Mario Praz i jego La filosofia dell’arredamento (1965), a kontynuatorem Peter Thornton i jego opracowania z lat 70. i 80. XX wieku. Podejmowano w nich zagadnienie w ujęciu stylistyczno-chronologicznym, bazując w zasadniczej mierze na źródłach wizualnych z epoki. Od tego czasu niezwykle wzrosła świadomość problematyki, jaka jest zawarta w fenomenie wnętrza mieszkalnego. W badaniach dokonało się przejście od perspektywy prezentującej historyczne wnętrze jako ujęty w ramy stylu i chronologii obraz epoki lub indywidualne doświadczenie artystyczne do postrzegania go jako obszaru dynamicznych napięć pomiędzy architekturą, wyposażeniem a użytkownikiem wraz z jego otoczeniem kulturowych kontekstów. Dostrzega się wymiar społeczny wnętrz, rozumiejąc je jako terytorium różnych społecznych praktyk pozostających w relacyjnej zależności wobec architektury, służących budowaniu form tożsamości, pamięci, społecznego statusu. Wnętrza poddawane są także refleksji z obszaru historii konsumpcji, transferu dóbr, luksusu, wreszcie mody i gustu.