bluuebunny/crossref_metadata_2025 huggingface dataset:
The course of pregnancy, delivery and the condition of newborn in women with uterus scar after previous cesar section
Authors:   Kyiv City Maternity Hospital No. 1, Kovyda N. , Honcharuk N. ,   Kyiv City Maternity Hospital No. 1
Published: September 2021

The objective: Analysis of pregnancy, delivery and the condition of newborns in women with uterus scar after previous Cesarean section. Materials and methods. Observations and retrospective analysis of individual maps of pregnant women, birth record and condition of newborns in 180 women with uterus scar after previous Cesarean section from 2014-2019. Results. It was found that women in I group had no history of miscarriage, and in II group this indicator was 6.7%. We were determined that the threat of early pregnancy was observed twice often in II group as in I group. Failure uterus scar during pregnancy was diagnosing in 21.1% of women of I group against 18.9% of women of II group, as well as during childbirth in 10% of women of II group against none of women of I group. In addition, 76.7% of women of I group were born by vaginal delivery against 24.4% of women of II group. In addition, 10% of newborns in women of I group on the Apgar scale were rated 6-7 points against 65.5% in a state of varying degrees of hypoxia in women of II group. Conclusion. Pregnancy and childbirth in women with uterus scar after previous Cesarean section were accompanying by complications of fetal and neonatal disorders. More pronounced changes were observing during pregnancy, delivery and changes in the condition of newborns in women of II group against with women of I group, which can be explaining by better pre-pregnancy preparation of women of I group and better monitoring during pregnancy. Keywords: сesarean section, pre-pregnancy preparation of women, the condition of newborns.
Perennial allergic rhinitis in children: efficiency and safety of using «Ergocetal»
Authors:   SI «Institute of pediatrics obstetrics and gynecology named after academic E.M. Lukyanova of the NAMS of Ukraine», Umanets T.R. , Lapshyn V.F. ,   SI «Institute of pediatrics obstetrics and gynecology named after academic E.M. Lukyanova of the NAMS of Ukraine», Rudnev A.A. ,   SI «Institute of pediatrics obstetrics and gynecology named after academic E.M. Lukyanova of the NAMS of Ukraine», Pustovalova O.I. ,   SI «Institute of pediatrics obstetrics and gynecology named after academic E.M. Lukyanova of the NAMS of Ukraine»
Published: September 2021

Purpose — to evaluate the efficacy and safety of levocetirizine («Ergocetal») in children with perennial allergic rhinitis (PAR). Materials and methods. 30 children aged 6–16 years with PAR were examined. All children were prescribed levocetirizine («Ergocetal») 5 mg in the form of tablets once a day for a month for the treatment of PAR. The criteria for the effectiveness of the treatment were: regression of the main nasal and ocular symptoms of PAR (rhinorrhea, nasal congestion, nasal itching, sneezing, itching and redness of the eyes) according to the visual analogue scale (VAS); dynamics of nasal eosinophilia in a smearst from the nasal mucosa. Results. The studies have shown that prescribe of levocetirizine «Ergocetal» in monotherapy for school-age children with mild and intermittent PAR had a positive therapeutic effect on nasal and ocular symptoms, as well as on the intensity of eosinophilic inflammation in the nasal mucosa. Established good tolerance and the absence of side effects of «Ergotal» in the examined children. Conclusions. Therapeutic efficacy, absence of adverse reactions, high adherence to treatment make it possible to recommend levocetirizine («Ergocetal») as monotherapy for mild and intermittent PAR in school children. The research was carried out in accordance with the principles of the Helsinki declaration. The study protocol was approved by the Local Ethics Committee of an participating institution. The informed consent of the patient was obtained for conducting the studies. No conflict of interest was declared by the authors. Key words: allergic rhinitis, treatment, levocetirizine.
Characteristics of the functional status of hemostasis in women after type I hysterectomy according to their body mass index
Authors:   I. Horbachevsky Ternopil National Medical University, Ukraine, Bodnar P.Ya. , Bodnar Ya.Ya. ,   I. Horbachevsky Ternopil National Medical University, Ukraine, Bodnar T.V. ,   I. Horbachevsky Ternopil National Medical University, Ukraine, Kryvokulsky B.D. ,   Communal noncommercial enterprise «Ternopil Regional Clinical Oncology Center» of Ternopil regional council, Ukraine
Published: September 2021

Neoplastic processes are a pathogenic trigger for the development of thrombotic complications, including deep vein thrombosis and pulmonary artery thromboembolism. Post-operative thrombosis is one of the leading mortality causes of oncological patients due to its asymptomatic course, and therefore due to the late diagnosis and treatment. Purpose — to estimate the coagulation system condition in women after the type I hysterectomy depending on their body mass index. Materials and methods. The study of hemostasis parameters of 50 patients with the uterus and uterine appendages oncological diseases depending on the body mass index was carried out. The results were processed by the method of variation statistics, which became the basis for their generalization. Calculations of the parametric Student's t-test and methods of nonparametric statistics (Mann–Whitney test) were used. Differences between comparable parameters were found statistically significant at p<0.05. Results. The analysis of hemostasis parameters in oncological patients has revealed a twice higher concentration of fibrinogen and soluble fibrin monomer complexes in comparison to the control group. All three groups were characterized by hyperthrombocytopenia. The surgery provoked further activation of I, II, and III phases of coagulation on the background of negative thrombodynamics caused by intraoperative blood loss. In women with I and II obesity grade no statistically significant differences in coagulogram were observed, whereas in patients with III obesity grade the thrombotic potential was significantly more aggressive. Conclusions. Oncological diseases of the female reproductive system are associated with the impairment of coagulation status: lower activated partial thromboplastin, hyperfibrinogenemia, and increased prothrombin index. The surgery was a significant trigger of the increase of hemostatic potential with the progressive increase of the markers of I, II, and III coagulation phases. III obesity grade is an independent risk factor for thrombotic complications. The research was carried out in accordance with the principles of the Helsinki declaration. The study protocol was approved by the Local Ethics Committee of all participating institution. The informed consent of the patient was obtained for conducting the studies. No conflict of interest was declared by the authors. Key words: oncogenesis, deep vein thrombosis, clotting, obesity, complications.
Differential diagnosis of thrombocytopenia during pregnancy: clinical and diagnostic algorithms
Authors:   SI «Institute of Pediatrics, Obstetrics and Gynecology named after Academician O.M. Lukyanova of the NAMS of Ukraine», Kyiv, Naumchik O.M. , Davydova Iu.V. ,   SI «Institute of Pediatrics, Obstetrics and Gynecology named after Academician O.M. Lukyanova of the NAMS of Ukraine», Kyiv, Limanska A.Yu. ,   SI «Institute of Pediatrics, Obstetrics and Gynecology named after Academician O.M. Lukyanova of the NAMS of Ukraine», Kyiv
Published: September 2021

Purpose — to create an algorithm for early diagnosis and differential diagnosis of conditions accompanied by thrombocytopenia (TP) during pregnancy, as well as an algorithm for the treatment of immune thrombocytopenia during pregnancy based on analysis of clinical, laboratory data and obstetric and perinatal results of such pregnant women. Materials and methods. We analyzed 155 histories of pregnancy and childbirth of women with TP, who underwent inpatient treatment and/or gave childbirth in the obstetric clinic of the State Institution «Institute of Pediatrics, Obstetrics and Gynecology named after Academician O.M. Lukyanova NAMS of Ukraine» from January 2008 to August 2018. According to the inclusion criteria, 111 histories were selected for further analysis. Pregnant women are divided according to the etiological principle of TP into three groups: with gestational thrombocytopenia, immune thrombocytopenia, secondary thrombocytopenia. The first group included 32 women (28.8%), the second — 65 (55.6%), the third — 14 (12.6%). During the selected period of time there were 99 births, 100 babies were born, 1 twin birth. Results and conclusions. The number of platelets progressively decreases during pregnancy with a minimum in childbirth. The algorithm of examination, the decision on the initiation or intensification of treatment, the choice of monitoring tactics for TP during pregnancy, the calculation of obstetric and perinatal risks, preparation for childbirth and the choice of method depend on the cause of TP and differ significantly. Developed «Algorithm for diagnosis and differential diagnosis in the detection of thrombocytopenia during pregnancy» and «Algorithm for the treatment of immune thrombocytopenia during pregnancy» are aimed at the prevention of obstetric and perinatal complications in pregnant women with thrombocytopenia. The research was carried out in accordance with the principles of the Helsinki declaration. The study protocol was approved by the Local Ethics Committee of an participating institution. The informed consent of the patient was obtained for conducting the studies. No conflict of interest was declared by the authors. Key words: thrombocytopenia, pregnancy, diagnostic algorithm, treatment algorithm.
Influence of biological and medico0social factors on the formation of schoolchildren's predisposition to negative behavior
Authors:   SI «Institute of Pediatrics, Obstetrics and Gynecology named after Academician O.M. Lukyanova of the NAMS of Ukraine», Kyiv, Nedelko V.P. , Skiban G.V. ,   SI «Institute of Pediatrics, Obstetrics and Gynecology named after Academician O.M. Lukyanova of the NAMS of Ukraine», Kyiv, Pinchuk L.P. ,   SI «Institute of Pediatrics, Obstetrics and Gynecology named after Academician O.M. Lukyanova of the NAMS of Ukraine», Kyiv
Published: September 2021

Purpose — to identify environmental factors that influence on negative behavior in school-age adolescents. Materials and methods. A survey of 256 adolescents in primary schools examined the health status, psychological state of the family and school. 337 adolescents were examined, 101 were at risk group, 80 were adolescent from social rehabilitation boarding schools and 156 were in control group to identify the reasons that prompted adolescents to behave negatively. Results. We found decreased health indicators of adolescents from risk group, a psychological condition in their families was unsatisfactory in a large proportion of adolescents: 13.3% was nervous, 11% was depressed, 7.6% was anxious, 8.8% s aggressive. The same pattern was observed in school conditions — 26.5% of adolescents indicated anxiety-nervous state, 16.2% — depressed, 9.8% — aggressive. Depth researches of into the causes of adolescents' psychological deterioration and their tendency to negative behavior revealed a number of biological and medico-social factors, which include complications of delivery, that was found in the first year of life, raising children in the family, organizing schooling, the prevalence of harmful habits, unhealthy lifestyles and unfavorable family conditions (single-parent families, alcohol abuse parents, child neglect). Conclusions. This study showed that adolescents who are prone to socio-negative behavior have a difficult history of life, a number of social and biological factors that adversely affect their health, psychological development and adaptation in society. To prevent this phenomenon it is necessary to create a state program of preventive education of young people, formation of the concept of healthy lifestyle for each teenager. Teens from families at risk group should be taken on special controls. The research was carried out in accordance with the principles of the Helsinki declaration. The study protocol was approved by the Local Ethics Committee of an participating institution. The informed consent of the patient was obtained for conducting the studies. No conflict of interest was declared by the authors. Key words: adolescents, risk factors, health, psychological status.
Improvement of effectiveness in treatment for urinary tract infection in pregnant women
Authors:   SI «Institute of Pediatrics, Obstetrics and Gynecology named after Academician O.M. Lukyanova NAMS of Ukraine», Kyiv, Davydova Iu.V. , Lymanskaya A.Y. ,   SI «Institute of Pediatrics, Obstetrics and Gynecology named after Academician O.M. Lukyanova NAMS of Ukraine», Kyiv
Published: September 2021

The aim is to evaluate the effectiveness of Phytolysin Active prescription in therapy of urinary tract infections in pregnant women. Materials and methods. The efficacy of Phytolysin Active (1 capsule per day for 21 days) in the complex treatment for urinary tract infection was studied in comparison with the group of pregnant women using traditional antimicrobial therapy. The first group consisted of 27 pregnant women who received complex treatment (antibiotic therapy + Phytolysin Active), the second consisted of 25 women who used exclusively antibiotic therapy. Among pregnant women in the first group, symptomatic gestational cystitis was observed in 9 (33.3%) cases, and in the second group in 8 (32%) patients. Results. The effectiveness of combination therapy with the use of Phytolysin Active was proved by significant improvement in general well-being and disappearance of cystitis symptoms in 8 (88.9%) women compared with 5 (62.5%) patients in the treatment group who used exclusively antimicrobial drugs. After treatment with the addition of Phytolysin Active to antibiotic therapy, Escherichiaсoli pathogen, which is most often diagnosed in this pathology, was observed in 1 (3.7%) women compared to 5 (20%) cases in the second group. Also, 25 (92.6%) women of the first group had no recurrence of urinary tract infections for 3 months. Conclusions. Complex treatment of asymptomatic bacteriuria in pregnant women with the use of the drug Phytolysin Active is more effective than the use of antibiotic therapy alone, which is proved by the high rate of the pathogen elimination and absence of infection recurrence for 3 months. The synergistic action of two active components of Phytolysin Active (Polpharma) – cranberry proanthocyanidins and lactobacillus acidophilus – improves the effectiveness of treatment and prevents relapse. The study was carried out in accordance with the principles of the Declaration of Helsinki. The study protocol was approved by the Local Ethics Committee of the institution. The informed consent of women was obtained for the research. The authors declare no conflicts of interest. Key words: pregnancy, urinary tract infections, treatments, herbal medicine, cranberry, lactobacilli.
The antimicrobial activity of two phenolic acids against foodborne Escherichia coli and Listeria monocytogenes and their effectiveness in a meat system
Authors: Ijabadeniyi Oluwatosin Ademola , Govender Austin , Olagunju Omotola Folake , Oyedeji Ajibola Bamikole
Published: September 2021

Ready-to-eat meats are susceptible to pathogenic contamination during their production, distribution, and sale. This study evaluated the antimicrobial effects of two phenolic acids (caffeic and ferulic acids) against foodborne pathogens in cold-cut meat at low-temperature conditions. The individual and combined antibacterial activities of caffeic and ferulic acids against Escherichia coli O157:H7 ATCC 43888 and Listeria monocytogenes ATCC 7644 were determined by diffusion disk assay in broth media and cold-cut meat. Broth media and meat samples already inoculated with E. coli and L. monocytogenes were treated with caffeic acid, ferulic acid, and their combination at the concentrations of 150 ppm and 200 ppm and stored at 4°C. Microbial growths were monitored at 0, 24, 48, and 72 h. Caffeic acid at 200 ppm exhibited a zone of inhibition of 12.33 mm on E. coli, and ferulic acid revealed a zone of inhibition of 11.00 mm on L. monocytogenes. The combination of caffeic ferulic acid at a concentration of 200 ppm was most effective against E. coli, demonstrating a synergistic effect over 72 h at 4°C in both broth media and meat. For meat samples, the combination of caffeic acid and ferulic acid exhibited a log reduction of 3.63 CFU/g at 150 ppm and 2.51 CFU/g at 200 ppm against E. coli O157:H7 at the end of cold storage. Caffeic acid alone exhibited an overall log reduction of 2.48 CFU/g at 150 ppm and 2.75 CFU/g at 200 ppm against L. mono-cytogenes. These results indicate the ability of caffeic and ferulic acids, individually and in combination, to reduce pathogenic contamination and improve safety of cold-cut meats.
Drying characteristics and some quality parameters of whole jujube (Zizyphus jujuba Mill.) during hot air drying
Authors: Tepe Begüm , Ekinci Raci
Published: September 2021

Drying kinetics, water-soluble vitamins, total phenolic content (TPC), antioxidant capacity (AC) of the jujube fruits dried at 50, 60, and 70°C, and degradation kinetics of the quality parameters were investigated. The models fitted to drying were determined as Page at 50 and 70°C, Parabolic at 60°C. Increment in the drying temperature increased the drying rate and decreased the drying time. Water-soluble vitamins, TPC, and AC were significantly reduced by the drying process. Degradation of water-soluble vitamins increased with the drying temperature, although TPC and AC were not significantly affected by temperature. Thermal degradations of quality parameters were fitted to first-order kinetic.
Drying characteristics and degradation kinetics in some parameters of goji berry (Lycium Barbarum L.) fruit during hot air drying
Authors: Batu Heysem Suat , Kadakal Çetin
Published: September 2021

Drying kinetics, color properties, water-soluble vitamins, antioxidant capacity, total phenolic content, and thermal degradation kinetics of bioactive compounds in goji berries were investigated. Drying experiments were conducted at 50°C, 60°C, and 70°C. Page model was determined as the best model to predict experimental moisture ratio for all temperatures. Increment in drying temperature increased effective moisture diffusivity and drying rate values. Vitamins C and B6, antioxidant activity and total phenolic content were significantly reduced by drying. Thermal degradation of vitamins C and B6, antioxidant capacity and total phenolic content were found to fit the first order kinetic model.
Quality perception and willingness to pay: The case of red wine with health-beneficial effects
Authors: Ruso Jelena , Filipovic Jovan , Maricic Milica , Spasojevic Brkic Vesna
Published: September 2021

This paper attempts to identify consumers’ preferences toward red wine quality cues and willingness to pay (WTP) for wine with health-beneficial effects, thus clarifying the complex process of purchasing habits and patterns. The data were analyzed using structural equation modeling. The findings from a case study conducted in Serbia show that consumer health-effect consciousness and household income are significant predictors of their WTP. On the other hand, health-conscious consumers are more inclined to intrinsic quality cues, while those who are willing to pay a higher price for a bottle of red wine are prone to extrinsic wine quality cues.
Comparison of social media platforms in terms of marketing performances of food companies
Authors: Celimli Seren , Adanacioglu Hakan
Published: September 2021

The objective of this study was to evaluate to what extent social media platforms are effective on the marketing performances of food companies. Facebook was the most effective platform in terms of some performance criteria such as time-saving, easy access to customers, customer feedback, brand awareness, marketing costs, order taking frequency, and sales amount. The most effective platforms after Facebook in terms of marketing performance are Instagram and Twitter, respectively. Marketing costs and product sales are factors that affect the attitude of food companies towards social media platforms.
Formulation and optimization of astaxanthin nanoemulsions with marine phospholipids derived from large yellow croaker (Larimichthys crocea) roe
Authors: Huang Luyao , Zhang Lingyun , Li Ruifen , Liang Peng
Published: September 2021

The aim of this work was to investigate the emulsifying capacity of marine phospholipids derived from large yellow croaker roe (LYCRPLs). Initially, conditions for preparing astaxanthin (1% w/w) nanoemulsions with LYCRPLs were optimized based on single-factor experiments, including homogenization pressure, homogenization cycle, emulsifier concentration and corn oil concentration via the response surface methodology. The optimal homogenization pressure was 60 MPa, the optimal number of homogenization cycles was nine, the optimal emulsifier concentration was 4.7%, and the optimal oil concentration was 20%. Under these conditions, the stability, particle size and polydispersity index of nanoemulsions were 0.018 ± 0.0016, 247 ± 4.5 nm and 0.215±0.019, respectively. The droplets of nanoemulsions were characterized by transmission electron microscopy, which revealed that all the droplets were more or less spherical and nonaggregated. In addition, the storage experiments indicated that the nanoemulsions were stable at different temperatures. Therefore, LYCRPLs could be explored as carriers for the delivery of insoluble bioactive compounds in the food industry.
DNAFoil, a novel technology for the rapid detection of food pathogens: Preliminary validation on Salmonella and Listeria monocytogenes
Authors: El Sheikha Aly
Published: September 2021

Over the past decades, several tools have been developed for food pathogen detection, including proteomics, metabolomics, immunological, biosensor, and nucleic acid-based approaches. Although these techniques are reliable and precise, they are time-consuming, technically challenging, and costly. Hence, it is necessary to develop rapid techniques for food pathogen detection, which can be performed at the household level. DNAFoil mechanism is a portable, completely self-administered, on-site DNA test that does not need expensive instru-ments or settings to confirm food pathogen detection in as little as 30 min. DNAFoil was used successfully for detecting food contamination and adulteration with pork derivatives (down to 0.1%) and vegetal components (down to 0.01%), respectively. In this study, initial validation experiments of DNAFoil were investigated to detect Listeria monocytogenes and Salmonella contamination. To confirm the specificity of the proposed method toward Salmonella, 18 different Salmonella strains, 6 non-Salmonella bacteria, and 2 fungi were investigated; also, in the case of Listeria monocytogenes, five bacterial strains, two fungi, and Listeria monocytogenes were investigated. The results stated that the Swiss Decode Salmonella and L. monocytogenes solutions can detect as few as 1 and 10 copies of DNA per microliter, respectively. The results also showed that the accuracy of our method ranges between 92 and 100%, while the precision value ranged between 88 and 100%. In terms of quality control applicability, DNAFoil Salmonella and Listeria monocytogenes reactions could be visually detected with the naked eye using a lateral flow strip, which could be used for in-place quality control during manufacturing and also can be used for more lab tests. In terms of cost, DNAFoil is usually much cheaper than the traditional detection methods. Therefore, DNAFoil is proposed as a promising and universal detection technology for food pathogens.
Análisis del rol de las mujeres administrativas en la resolución de conflictos del sector cooperativo en Ocaña, Norte de Santander
Authors: Pacheco-Sánchez Carlos Alberto , Durán-Alvernia Luz Mery
Published: September 2021

El conflicto es un factor que puede presentarse en cualquier contexto, ocasionando alteraciones en el comportamiento de las personas y de las organizaciones y, es justo allí, donde se hace necesaria una postura decisiva que coadyuve a disminuir el problema. En este contexto, se peresenta este artículo con el objetivo analizar el papel que desempeña la mujer gerente o administradora del sector cooperativo en Ocaña, Norte de Santander, como ente mediador en la resolución de conflictos. En lo metodológico, fue un estudio de enfoque cuantitativo no experimental, de nivel descriptivo y diseño transeccional, utilizándose como instrumento de recolección el cuestionario Thomas Kilmann (TKI), a través del cual se logran describir los estilos, competencias y habilidades para la resolución de conflictos. La población fue de 11 mujeres de 25 organizaciones del sector cooperativo de Ocaña, Norte de Santander. Se concluye que la mujer presenta un estilo colaborativo frente a las situaciones de conflicto más predominantes y de competencia en conflictividades de menor procedencia
Leisure time physical activity among Brazilian adults: National Health Survey 2013 and 2019
Authors: Mielke Gregore Iven , Stopa Sheila Rizzato , Gomes Crizian Saar , Silva Alanna Gomes da , Alves Francielle Thalita Almeida , Vieira Maria Lúcia França Pontes , Malta Deborah Carvalho
Published: September 2021

ABSTRACT Objective: The aim of this study was to analyze the prevalence of leisure-time physical activity in 2013 and 2019 according to sociodemographic characteristics in Brazilian adults. Methods: We analyzed data from the National Health Surveys conducted in 2013 and 2019. Prevalence of leisure-time physical activity (150+ minutes per week in physical activities) was calculated according to gender, age, education, race/skin color, Federative Units, and regions of Brazil in 2013 and 2019. Poisson regression models and 95% confidence intervals (95%CI) were used to compare leisure-time physical activity across different groups in 2013 and 2019. Results: The proportion of Brazilian adults active in leisure-time increased from 22.7% (95%CI 22.06–23.34) in 2013 to 30.1% (95%CI 29.44–30.67) in 2019. The prevalence of leisure-time physical activity increased between 2013 and 2019 in 23 of the 27 Federative Units in Brazil. Both in 2013 and in 2019, the proportion of active people during leisure time was higher in men, young people, with a high level of education and individuals with white skin color. Overall, the magnitude of the observed differences in leisure-time physical activity between sociodemographic groups slightly decreased from 2013 to 2019. Conclusions: Despite the increase in the prevalence of leisure-time physical activity among Brazilian adults in the last six years, marked sociodemographic inequalities persist. The success of future public policies to promote physical activity in leisure must be evaluated from the perspective of social determinants of health and the reduction of inequalities in the practice of physical activity.
Construction monitoring of cable replacement: a case study
Authors: Zhang Kexin , Li Dachao , Qi Tianyu , Xue Xingwei , Zhang Guanhua , Li Yanfeng
Published: September 2021

To ensure the structural safety and normal operation of a cable-stayed bridge in China (Rainbow Bridge), cables were replaced and construction monitoring and control were conducted. In the process of cable replacements, the cable force and girder elevation were monitored and the distribution of cable force was adjusted according to the construction monitoring results to improve the structural force and increase the safety reserve of the structure. In the process of monitoring the cable force, the difference between the measured cable force and the design cable force was 0.4–4.4%. After adjusting the cable force, the difference between the measured cable force and the design cable force was less than 2%, and the change in the cable force was uniform, meeting the original design requirements. In the monitoring process of the main girder elevation, the elevation was increased by a maximum of 0.054 m. After completing cable adjustment, the main girder elevation was increased by 0–5 mm. This elevation was more reasonable and met the design requirements.
Effect of chlorine bypass system dust on fresh state properties and strength development of high-volume blast-furnace slag mortar
Authors: Han Mincheol , Lee Dong-Joo , Kim Jong , Han Dongyeop , Yi Seong-Tae
Published: September 2021

In this study, chlorine bypass system (CBS) dust is proposed as a new alkali activator and the feasibility of applying CBS dust for high-volume blast-furnace slag (HVBFS) mortar is confirmed. CBS is a dust-collecting system for the cement-manufacturing process that collects dust with chloride and alkali. In general, most of the collected CBS dust in South Korea is wasted. As an effort to reduce waste and incidental costs during the cement-manufacturing process, in this study, cement powder was replaced by CBS dust as an alkali activator for blast-furnace slag. From the experiment of HVBFS mortar activated with various CBS dust proportions, favourable results were observed in terms of fluidity and air content when the CBS dust replacement exceeded 5%. Additionally, regarding strength development, CBS dust was successful as an alkali activator for the latent hydraulic reaction of blast-furnace slag. Therefore, when CBS dust was used as a 5% replacement, its efficiency as an alkali activator in which a large amount of blast-furnace (HVBFS) slag was substituted under the research conditions in this study was confirmed in terms of fluidity and strength development performance.
Structural Analysis of the Effects of General English Class Instructional Pedagogy Through Movies on College Students’ Cognitive and Affective Satisfaction
Authors: Kim Hyun-Jin , Seo Ji-Young
Published: September 2021

This study is to investigate the effects of general English class instructional pedagogy through movies on college students’ cognitive and affective satisfaction. For the purposes of the study, conventional pedagogy(language-driven) and film pedagogy(content-driven) were employed with 146 college students enrolled in the Movie English Liberal Arts class at K university in Seoul. To find out the pure causal effects of conventional and film pedagogy on students’ cognitive and affective satisfaction, other confounding co-variants were included in the research model and statistically controlled. The AMOS software was applied to analyze structural relationships based on participants’ questionnaire data. The main research findings are as follows: first, conventional pedagogy and film pedagogy had statistically significant effects on students’ cognitive satisfaction; second, conventional pedagogy and film pedagogy had statistically significant effects on students’ affective satisfaction; third, in both cognitive and affective satisfaction, film pedagogy had larger standardized path coefficients than conventional pedagogy. These results suggest that, first, in terms of its role as an instructional method, Movie English helped students improve not only English knowledge but also confidence. Second, to teach English through movies, film pedagogy integrated with conventional pedagogy is necessary. Finally, pedagogical implications and future studies are discussed.
A Study on EFL Learners’ Preferred Types of Salience and Categories in Movie English
Authors: Ryu Dohyung
Published: September 2021

The purpose of this paper is twofold: (1) to observe EFL learners’ preferred types of salience in Movie English and (2) to examine which language categories are mainly salient. The types of salience are based on Schmid and Günther’s (2016) 4 types of salience, with categories of grammar, individual words, chunks, and messages. This is a case study of five college students majoring in English all with TOEIC scores higher than 800. The study was divided into a self-heuristic group of three students and a category-presented group of two students. The self-heuristic group was instructed to find out what they found salient and noticeable in a movie, without the terms salience and category being mentioned. The category-presented group was directed to find out what they found salient and noticeable in the movie, based on given categories. The results showed that the two groups preferred surprise and novelty. Both groups preferred different categories, however. The self-heuristic group mostly focused on chunks, with a preferred order of chunks, grammar, words, and messages. The category-presented group mainly focused on words, with a preferred order of words, chunks, messages, and grammar. Pedagogical implications will be discussed in more detail in this paper.
A Study on College Students’ Learning Attitude During Synchronous and Asynchronous Video-Based Group Activities for English Presentation
Authors: Im Hee-Joo
Published: September 2021

The purpose of the study is to explore college students’ perceptions/attitudes during synchronous and asynchronous group activities. The survey comprised of a 10-item, 5-point Likert-type questionnaire and open-ended questions. In the study, two groups, a synchronous group and an asynchronous group, participated in four activities during one semester. For the data collection, the researcher surveyed 116 students who are in the 1st year of college and collected their final tests, an oral presentation. The findings are as follows. Firstly, between the two groups, the synchronous group showed higher mean scores for online group participation. Secondly, the synchronous group also indicated higher mean scores for English learning, speaking confidence, and interest in learning English. Lastly, both groups mentioned communication with team members, improvement of English speaking and pronunciation, increased self-confidence and other elements as advantages of group work. In contrast, disadvantages included: technology problems, decreased self-confidence, inconveniences when meeting with team members online and others. The implications for the study are: first, online group activity can reduce isolation and increase interaction; second, the online video-based platform, Flipgrid, can help students improve English speaking skills by observing their own or peers’ videos; lastly, instructors can selectively use the synchronous and asynchronous group activities to suit their educational needs.
The Effects of Digital Virtual Reality Game-Based Language Learning on English Language Learners’ Development of Vocabulary and Cultural Knowledge and Affective Attitudes
Authors: Jin Seunghee
Published: September 2021

The current study investigated the effects of using a 3D virtual reality (VR) game on university EFL students’ development of vocabulary and cultural knowledge. In addition, it explored how this new approach affected the students’ affective attitudes such as interest, confidence, and learning motivation. Furthermore, it examined the students’ perception and attitude toward VR game-based language learning. Over one semester, an experimental group of 25 students participated in the VR game-based language learning, while a control group of 24 students followed the regular curriculum of the university EFL course. To collect data, 1) pre- and post-tests for both vocabulary and cultural knowledge, 2) a pre- and post-questionnaire for affective attitudes, 3) an online survey for students’ perceptions and attitudes, and 4) a qualitative interview were administered. The results revealed that the VR game-based language learning group outperformed the traditional learning group in both vocabulary and cultural knowledge gains. In addition, VR game instruction was effective in increasing students’ interest, confidence, and learning motivation. Furthermore, the students reported overall positive perceptions and attitudes toward this new kind of instruction. This study suggested that VR game-based language learning is a new, effective way to promote students’ vocabulary and cultural knowledge.
Impact of Dehumidification Devices on Production Efficiency in Plastic Injection
Authors: OKTAÇ M. Tahir , TİMUR Mustafa , KILIÇ Halil
Published: September 2021

One of the many methods used in the production of plastic materials is plastic injection method. The plastic injection method needs equipment difficult to choose, and it is also costly. Many negativities could be experienced during production. One of them is the water droplet problems on the surfaces of the mould. Provision of insufficient cooling on moulds, ambient temperature, non-homogenous humidity, mechanical and other stresses occurring during production, cracks on the product, warpage and thermal residual all cause some stress-like defects. In this study, the effect of water droplets problem on production efficiency in the moulds of Polyethylene Terephthalate (PET) raw materials manufactured in a private enterprise was examined. The percentage productivity table has been created based on different months of the year, August July and August. In the enterprise, 8 dehumidifiers were placed to 17 injection machines to create a homogeneous production temperature in the environment. Humidity and heat values obtained during production were monitored daily and recorded. In this study, which was conducted over two years and three months, results were obtained suggesting that the water droplets formed in injection moulds has decreased with the effect of dehumidification devices, and the efficiency of injection production has also increased.
Institutional competition and import of institutions: Theoretical aspects
Authors:   Institute of Economics of the Russian Academy of Sciences, Sukharev Oleg Sergeevich
Published: September 2021

Modern economy updates the problems of institutional competitions manifested in permanent non-compliance with the rules by the economic agents, the introduction of new institutions, standards, agreements, destruction of the current institution system. The import of the instutitions is the most relevant type of the institional competition. The borrowing of the institutions exert the impact of the established rules on the internal institutions and organizational forms, thus becoming dependent, just like their executors. This provides the initiator of the introduced rules with some benefits and the leading role in the institutional competition. The purpose of the research is to use theory of the institutional competition to propose a unified quality assessment method for the acting and re-introduced institutions to approve of the managerial decisions aimed to adjust the institutional system. The research methodology consists of institutional theory and assessment approaches to classical and functional efficiency, as well as in the field of quality assessment for the institution performance, which are defined as abstract norms and organizational structures, including the development institutions as regional development agencies. The result of the study was a designed general model of institutional competition, presentation of the blocking effect and dysfunction of the imported institution, as well as the proposed unified comparative assessment method for the quality of acting and imported institutions. It is also substantiated that the plot of the Coase theorem is opposite to the "lock-in" effect, while the Coase theorem lacks institutional competition. In practice, transactional costs are shown not to be equal to zero for the institutional competition. When institutions are imported, costs can increase with lock-in effects and dysfunction. In this regard, the introduction of new institutions should be justified with the parameters of the performance efficiency in some countries and with the conditions of the social economic system where they are supposed to be used, taking into account the institutional competition. The institutional competition is showcased as the import of development institutions as regional development agencies. Further research is seen to be connected with testing the proposed approach under the quality assessment criteria from the institutions and designed models for determining the permissible volume of imports of institutions.
Troglobionts of the Kungur ice cave (Perm region): study overview
Authors:   Mining Institute of Ural Branch of Russian Academy of Sciences, Naumkin D.V. , Kadebskaya O.I.
Published: September 2021

The article briefly describes the history of studies of the biota of the Kungur Ice Cave, as well as an annotated list of its currently known inhabitants. In total, 15 taxa of cyanobacteria, 24 taxa of algae, 7 species of mosses, 1 taxon of dicotyledons, 26 taxa of fungi, 34 taxa of invertebrates (of which 13 are insects), and 12 species of vertebrates (including birds) are known today in the Kungur Cave.
Integration of environmental approaches into the design of the architectural and ethnographic museum's operations
Authors:   Perm State University, Glazyrina Y.V.
Published: September 2021

The article presents some results on еру environmental strategic approach for the development of the Khokhlovka Architectural and Ethnographic Museum (a branch of the Perm Regional Museum), which is located on an area of 35 hectares, 40 km from Perm. The museum's territory has no nature reserved status, but is included in the group of objects of regional cultural heritage. Since 2010, the museum has been gradually implementing its environmental strategy, which began with the development of an excursion aimed at the museum landscape and ecosystems. Over the past ten years, activity guides on traditional nature management and natural features of the area were published for family audiences, as well as open-air environmental exhibition have been installed as a site specific. At least, an original concept of the slow «EcoPicnic» festival dedicated to nature observation and introduction to eco-technologies of the past and future has been created.
Remote observation of animals by camera traps (example of the Vishersky reserve)
Authors:   State Nature Reserve «Vishersky», Zimin S.V.
Published: September 2021

In 2016-2020 in the FSBI «State Reserve «Vishersky» (Perm Territory, Russia), observations of game animals were carried out, including the brown bear – Ursus arctos, the elk - Alces alces, the wild reindeer – Rangifer tarandus using camera traps. Camera traps of following models were user Keep Guard CK 076 HD Boskon Guard BG 520 Suntek (Owl 120), Scoutguard SG 562-BW (Boly Guard), Scoutguard SG - 2060-k, Bushnell Natureview Cam HD Essential mainly on animal paths. The total number of camera s was 4097 traps/day. On the basis of the results of remote sensing, the indices of the abundance of species were calculated, the seasonal and daily activity of animals was assessed, and the features of their behavior were revealed. According to the camera traps, the population density of brown bear does not correspond to the indicator for the optimal habitats of this species [8]. The western slope of the North Ural taiga in general and for the Upper Visher population of brown bears in particular such low this density is probably optimal. In total, 227 photolocations were obtained, of which 11 species of mammals and 2 spesies of grouse birds were recorded. The most frequently recorded species is the elk. It has been confirmed that with the formation of a deep snow cover, it leaves the protected area, whist was noted in the second half of the 19 th century [5]. Information on the age and sex composition of the moose group was obtained. The sex ratio was 1.8 in favor of males. Brown bear and elk are most active during daylight hours. To determine the indicator of the abundance of animal throughout the reserve additional data from camera traps installed in the main biotopes of the protected area required. At the same time, a network of camera traps is desirable following the example of the Central Forest Reserve [6] of the Kedrovaya Pad Nature Reserve and the Land of the Leopard National Park [11] with a network size of 5x5 km, where at least one observation point should be located.
Review: emission and absorption of greenhouse gases by soils. Ecological problems
Authors:   South Federal University, Fedorov Y.A. , Sukhorukov V.V. ,   Institute of Earth Sciences of the Southern Federal University, Trubnik R.G. ,   Institute of Earth Sciences of the Southern Federal University
Published: September 2021

Abstract: Soils are a source and sink of greenhouse gases (GHG) such as carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O). Since the volumes of concentration and flux can be large, accurate quantitative estimates are needed to obtain the data on global GHG fluxes required for forecasting global changes and climate studies. This review shows the role of soils as one of the important sources and regulators of the content of CH4, CO2, N2O in the troposphere, and also presents the main methods for monitoring greenhouse gases. The influence of natural and anthropogenic factors on the emission and absorption of CH4, CO2, N2O by the soil cover has been analyzed. Original diagrams are presented showing the global fluxes of CH4, CO2, N2O by various ecosystems, including the pedosphere. The estimation of methane emission and distribution of its content in the main types of soils of the Rostov region is carried out. The mechanisms of CH4, CO2, N2O generation in soils and their possible influence on the calcium-carbonate balance, which plays an important role in the regulation of biogeochemical processes in the pedosphere, are considered. The performed analysis and generalization of research data on various types of soils makes it possible to shed light not only on their contribution to the global methane emission, but also to approach the understanding of processes and parameters that are important from the point of view of agrochemistry, such as, in fact, carbonate-calcium equilibrium and redox potential in modern soils. An inventory of sources and an assessment of the inter-reservoir gas mass transfer in the pedosphere - atmosphere system allows one to start developing a strategy to reduce greenhouse gas emissions that will help curb the rate of global climate change.
Discovering the Value of Liberty in Intellectual Property Adjudication: A Methodological Critique of the Reasoning in Discovery Ltd v Liberty Group Ltd 2020 4 SA 160 (GJ)
Authors: Shay Richard , Moleya Ndivhuwo Ishmel
Published: September 2021

This article discusses the recent decision in Discovery Ltd v Liberty Group Ltd 2020 4 SA 160 (GJ), which concerned a claim of trade mark infringement in terms of sections 34(1)(a) and 34(1(c) of the Trade Marks Act 194 of 1993 and unlawful competition on a developed reading of the common law. This article argues that the court arrived at the correct conclusion by the incorrect means and failed to adequately construe the array of constitutional interests and considerations that pertained to the matter on the facts. Further, the lack of clarity on the appropriate constitutional port of entry for the judicial enquiry unnecessarily leaves future courts guessing regarding the correct methodology to employ in cases where intellectual property rights are asserted in opposition to constitutional rights and interests. It is argued that the transformative impetus of section 39(2) of the Constitution of the Republic of South Africa, 1996, as well as numerous substantive constitutional provisions are undermined when courts neglect to anchor judicial reasoning in the constitutional context and merely apply a constitutional veneer to whatever outcome has already been reached. Accordingly, we argue that courts are under a general obligation to root all adjudication in constitutional norms and method, which, we submit, secures a thicker concept of the value of liberty than has been produced in this decision.