bluuebunny/crossref_metadata_2025 huggingface dataset:
The Effect of Bojungikgi-tang on Stress Urinary Incontinence: A Systematic Review and Meta-Analysis
Authors: Nam Hyun-seo , Baek Tae-hyun
Published: July 2021

Objectives: This study investigates the effects and safety of Bojungikgi-tang for stress urinary incontinence by systemic review and meta-analysis of randomized controlled trials (RCTs).Methods: RCTs were selected from articles published until December 2019 in seven domestic and foreign databases. The quality of the literature was evaluated using Cochrane’s risk of bias (RoB) tool, and RevMan 5.3 was used to synthesize the results.Results: A total of 694 patients with stress urinary incontinence participated in eight RCTs. Meta-analysis showed that the total effective rate of treatment that combines pelvic floor muscle training (PFMT) and Bojungikgi-tang was significantly higher than that of PFMT alone. The volume of urine leakage per hour after the combined treatment was significantly lower than that of PFMT alone. The International Consultation on Insurance Questionnaire-Short Form (ICIQ-SF) scores from combining PFMT and Bojungikgi-tang were significantly lower than those for PFMT alone.Conclusion: This study suggests that Western medical treatment combined with Bojungikgi-tang for urinary incontinence from stress might be more effective in improving symptoms than conventional Western medical treatment alone. However, the number of studies included in the meta-analysis was insufficient, and the quality of the selected literature was generally low. Therefore, high-quality clinical studies on herbal medicine treatment for urinary incontinence would be required in the future.
A Case of Pulmonary Embolism Patient Contraindicated in the Use of Anticoagulants Improved by Administering Hyulbuchuko-tang
Authors: Ha Won Jung , Lee Yu Jin , Kim Geun Young , Cho Ki-Ho , Moon Sang-Kwan , Jung Woo-Sang , Kwon Seungwon
Published: July 2021

Background: This case report shows the effect of Hyulbuchuko-tang on a patient with a contraindication to anticoagulants who complained about dyspnea caused by pulmonary embolism (PE).Case report: A PE patient with dyspnea was treated with herbal medication, Hyulbuchuko-tang, for 28 days. Evaluations took place by assessing time for oxygen application time per day, follow-up chest CT, and D-dimer test results. Oxygen application time per day decreased, and oxygen therapy ended on the 14th day of Hyulbuchuko-tang treatment. Follow-up chest CT showed resolution of PE. The D-dimer level decreased on the 24th day and decreased more after 1 month later.Conclusion: This clinical case study suggests that Hyulbuchuko-tang might be effective in the resolution of PE and can be an option as a treatment for PE patients with contraindications to anticoagulants.
Hepato-Renal Activities of Hydro-Methanol Leaf Extract of Cnidoscolus aconitifolius in Adult Male Wistar Rats
Authors: Ezebuiro Ijeoma , Ododo Avweresuoghene , Apugo Uchechukwu Ifeanyichukwu
Published: July 2021

Introduction: Medicinal plants such as Cnidoscolus aconitifolius (CA) have been studied over the years for their protective and curative potentials against a myriad of common global health challenges such as hepatorenal injuries.

Objectives: To ascertaining the effects of the hydromethanol leaf extract of CA (HMLECA) on hepato-renal parameters in adult male wistar rats.

Method: A total of 18 adult male wistar rats were divided into 3 groups of six rats each. Group I served as the negative control which received distilled water while groups 2 and 3 served as extract treatment groups which received 200 and 400 mg/kg BW of the HMLECA respectively. The administration was daily for a period of 58 days while blood sample for the biochemical analysis was drawn via cardiac puncture at the end of the study following light chloroform anaesthesia.

Results and Discussion: The results showed that the administration of both doses of the extract produced no significant (P<0.05) effect on the levels of serum liver enzyme (AST, ALT, ALP), TP, ALB, electrolytes (K+, Na+ and HCO3–), Creatinine and Urea while that of the 400 mg/kg BW produced significant (P<0.05) decrease in the level of TB and Cl –. Hence, the administration of the leaf extract in this study did not elicit any toxic effect on both the liver and kidney functions and could be effective as hepato-renal protective agent.

Keywords: Cnidoscolus aconitifolius, Liver function, Liver enzymes, Renal function, Serum biochemicals, Serum electrolytes
Evaluation of Antioxidant activities of Aqueous extract from Bryophyllum pinnatum on Carbon tetrachloride-induced albino rat tissues
Authors: ALLI SMITH Yemisi Rufina , ALUKO Bukola Tola , OWOLABI Olutunmise Victoria
Published: July 2021

Oxidative injury or cellular damage arising from free radicals or reactive oxygen species (ROS) has been implicated in the pathogenesis of many human diseases. These ROS are generated through normal metabolism of drugs, environmental chemicals and other xenobiotics as well as endogenous chemicals. Accumulated evidence suggests that ROS can be scavenged through chemoprevention utilizing natural antioxidant compounds present in foods and medicinal plants. The aim of this study is to evaluate antioxidant activities of aqueous extract of Bryophyllum pinnatum using carbon tetrachloride-induced albino rats as model. An in-vivo antioxidant activity was carried out on the CCl4 induced rats by administration of aqueous extract of Bryophyllum pinnatum at doses of 50, 100 and 200mg/Kg bw for 14 consecutive days, and one group was treated with Silymarin at a dose of 50 mg/Kg as a standard drug. The antioxidant activities were estimated by evaluating its effects on antioxidant parameters in the tissues of albino rats (Serum, Liver and Heart). The activity of catalase (CAT), Superoxide dismutase (SOD), Glutathione peroxidase (GPx) and the levels of MDA and GSH were evaluated in tissue homogenates. Results showed that the rats fed with the higher concentrations of Bryophyllum pinnatum had significant increase (p<0.05) in glutathione content (GSH), GPx, SOD and catalase activities relative to normal and standard control. However, the level of MDA was decreased (p<0.05) for the treated groups (100 and 200mg/kg). These results suggest that aqueous extracts of Bryophyllum pinnatum has active substances contributing to varied degrees of potent antioxidant activity and could serve as important source of antioxidants in food, cosmetics and pharmaceutical industries.

Keywords: Oxidative injury, Bryophyllum pinnatum, antioxidant, Diseases, Tissues
Anti-inflammatory Activity of Ethanol Extract of Lotus (Nelumbo nucifera G.) Seed Against White Male Rats Using Paw Edema Method
Authors: Fitri Khairani , Khairani Tetty Noverita , Sianturi Kristin Tiurma , Leny Leny , Hafiz Ihsanul
Published: July 2021

The purpose of this study was to determine the anti-inflammatory activity test of ethanol extract of lotus seeds in rats induced by carrageenan. The research method used was experimental. The object used in this study was male white rats. Observations were made for 6 hours and then the data were analyzed using the one way analysis of variance (ANOVA) test. The anti-inflammatory activity test was carried out on the test animals which were divided into 5 groups, 3 each with the suspension test group with a dose of 200, 300, 400 mg/kg bw, the negative control group was the CMC Na 1% suspension and the positive control was diclofenac Na 2, 25 mg/kg bw. The results showed that the ethanol extract of the seeds of lotus (Nelumbo nucifera G) was proven to have an anti-inflammatory effect on carrageenan-induced male white rats at doses of 200, 300 and 400 mg/kg BW with the percentage value of inflammation inhibition at the 6th hour was 65.79, 74.65 and 80.77%, with the most effective dose in reducing anti-inflammatory drugs being 400 mg/kg bw. The ethanol extract of the seeds of lotus (Nelumbo nucifera) has anti-inflammatory activity.

Keywords: anti-inflammatory activity, Nelumbo nucifera, paw edema
UNIDADE DE ENSINO POTENCIALMENTE SIGNIFICATIVA, COM ELEMENTOS LÚDICOS, COMO ESTRATÉGIA DE ENSINO DE GENÉTICA
Authors: De Oliveira Lorena Fernandes , Angelo Elisangela Andrade , Barbosa Danilo Sandro Sandro
Published: July 2021

A proposta deste projeto nasceu ao constatar, por meio de revisão bibliográfica e trabalhos anteriores, que existem grandes dificuldades por parte dos alunos do Ensino Médio em relação à Genética, sendo uma das causas a falta de contextualização do conteúdo. As Unidades de Ensino Potencialmente Significativas (UEPS) são sequências didáticas baseadas nas teorias da aprendizagem, que visam um aprendizado significativo. A UEPS consiste nos seguintes passos: 1) Definição do tema; 2) Levantamento dos conhecimentos prévios; 3) Introdução em nível proximal; 4) Apresentação do conteúdo (aspectos gerais, seguidos dos específicos); 5) Retomada dos aspectos gerais e estruturantes com um nível maior de complexidade; 6) Retomada das características mais relevantes do conteúdo (novas situações-problemas com grau maior de complexidade); 7) Avaliação da aprendizagem; 8) Verificação se houve aprendizagem significativa. Já a didatização lúdica é a utilização do lúdico como um instrumento prazeroso e significativo de ensino e aprendizagem. Tanto as UEPS quanto a didatização lúdica podem ser estratégias de ensino que levam à construção de um conhecimento significativo para o aluno. Assim, o objetivo foi desenvolver uma UEPS com elementos de didatização lúdica. Os principais resultados foram a constatação da aplicabilidade das UEPS no ensino de Genética, bem como a presença de vários indícios de que houve uma aprendizagem significativa, contextualizada, crítica e prazerosa.
Operational Analysis of Mollusc Valve Activity in Automated Ecological Biomonitoring Systems
Authors: Gaisky P. V. ,   Marine Hydrophysical Institute, Russian Academy of Sciences, Sevastopol, Russian Federation
Published: July 2021

The article describes features of the operational analysis of valve activity of freshwater (Unio pictorum) and marine (Black Sea mussel Mytilus galloprovincialis) bivalve molluscs for created automated systems of bioelectronic environmental control. The studies used measuring data obtained from long-term field and laboratory experiments using instruments developed by the author. The assessment of the mollusc general behavioral characteristics expressed in the dynamics and amplitude of group valve activity as a response to various effects made it possible to determine typical behavioral response models of toxic effects in the aquatic control environment. For the operational analysis, the main statistical indicators are identified, which are used to create software algorithms for automatic decision-making of the environmental biomonitoring system. As these indicators are used first of all the group time-sliding estimates of the synchronism of mollusc reactions, the data of valve activity averaged in different time intervals and the gape level (group and individual). The existence of established models, specified calculated numerical indicators and their permissible limits will ensure the standardization of the approach to detection of toxic factors and further implementation of such biomonitoring systems at control points.
Hydrological, Hydrochemical and Hydrobiological Studies of Lake Donuzlav (Western Crimea, Black Sea) Based on the Results of Expeditions in 2018
Authors: Ryabushko V. I. ,   A. O. Kovalevsky Institute of Biology of the Southern Seas, Russian Academy of Sciences, Sevastopol, Russia, Shchurov S. V. ,   A. O. Kovalevsky Institute of Biology of the Southern Seas, Russian Academy of Sciences, Sevastopol, Russia, Kovrigina N. P. ,   A. O. Kovalevsky Institute of Biology of the Southern Seas, Russian Academy of Sciences, Sevastopol, Russia, Popov M. A. ,   A. O. Kovalevsky Institute of Biology of the Southern Seas, Russian Academy of Sciences, Sevastopol, Russia
Published: July 2021

The ecosystem of unique Lake Donuzlav has been under significant anthropogenic pressure over a long period. Therefore, to assess the long-term changes occurring in the lake, regular monitoring studies are required. In June and October 2018, complex hydrological, hydrochemical and hydrobiological studies were carried out in the lake water area. Temperature, salinity, pH, dissolved oxygen content, biochemical oxygen demand on the fifth day (BOD5), permanganate oxidizability, concentration of silicon, mineral and organic forms of nitrogen and phosphorus, abundance and biomass of phytoplankton were determined by standard methods. It is shown that the thermohaline structure of waters directly affects the distribution of hydrochemical and hydrobiological indicators. In shallow water, a low oxygen content was recorded due to significant heating and poor water exchange, but no oxygen deficiency was found. Mussel and oyster farms and sewage have a significant impact on the ecological state of the lake. Especially high values of BOD5, oxidizability, maximum concentrations of organic forms of nitrogen and phosphorus were noted in these places. It was found that the biomass of phytoplankton increases and the species diversity decreases with distance from the sea to the apex part of the lake. Potentially toxic alga Dinophisis sacculus is found in small quantities, which does not affect the nutritional value of the molluscs. To assess the long-term changes in the phytoplankton community and its food reserves, regular monitoring studies of Lake Donuzlav are required in different seasons.
STUDENTS’ GEOMETRIC THINKING ON TRIANGLES: MUCH IMPROVEMENT IS NEEDED
Authors: Casanova Joanne Ramirez , Cantoria Claudeth Cathleen Canlas , Lapinid Minie Rose Caramoan
Published: July 2021

A look into students’ misconceptions help explain the very low geometric thinking and may assist teachers in correcting errors to aid students in reaching a higher van Hiele geometric thinking level. In this study, students’ geometric thinking was described using the van Hiele levels and misconceptions on triangles. Participants (N=30) were Grade 9 students in the Philippines. More than half of the participants were in the van Hiele’s visualization level. Most students had imprecise use of terminologies. A few had misconceptions on class inclusion, especially when considering isosceles right triangles and obtuse triangles. Very few students correctly recognized the famous Pythagorean Theorem. Implications for more effective geometry teaching are considered.
A scalable and highly immunogenic virus-like particle-based vaccine against SARS-CoV-2
Authors: Mohsen Mona , Balke Ina , Zinkhan Simon , Zeltina Villija , Liu Xuelan , Chang Xinyue , Krenger Pascal S. , Plattner Kevin , Gharailoo Zahra , Vogt Anne-Cathrine S. , Augusto Gilles , Zwicker Marianne , Roongta Salony , Rothen Dominik A. , Josi Romano , Costa Joana J. da , Sobczak Jan M. , Nonic Aleksandra , Brand Lee-Anne , Nuss Katja , Martina Byron , Speiser Daniel E. , Kündig Thomas , Jennings Gary T. , Walton Senta M. , Vogel Monique , Zeltins Andris , Bachmann Martin
Published: July 2021

SARS-CoV-2 caused one of the most devastating pandemics in the recent
history of mankind. Due to various countermeasures, including
lock-downs, wearing masks and increased hygiene, the virus has been
controlled in some parts of the world. More recently, the availability
of vaccines, based on RNA or Adenoviruses, have greatly added to our
ability to keep the virus at bay, again in some parts of the world only.
While available vaccines are effective, it would be desirable to also
have more classical vaccines at hand for the future. Key feature of
vaccines for long-term control of SARS-CoV-2 would be inexpensive
production at large scale, ability to make multiple booster injections
and long-term stability at +4 C. Here we describe
such a vaccine candidate, consisting of the SARS-CoV-2 receptor binding
motif grafted genetically onto the surface of the immunologically
optimized cucumber mosaic virus, called CuMV -RBM.
Using bacterial fermenter production and continuous flow centrifugation,
the productivity of the production process is estimated to be
>2.5 million doses per 1000 liter fermenter run and the
vaccine candidate is stable for at least 14 months at 4°C. We further
demonstrate that the candidate vaccine is highly immunogenic in mice and
rabbits and induces more high avidity antibodies compared to
convalescent human sera and antibodies induced are more cross-reactive
to mutant RBDs for variants of concern (VoC). Furthermore, antibody
responses are neutralizing and long-lived. This, the here presented
VLP-based vaccine may be a good candidate for use as conventional
vaccine in the long-term.
Calculation of Retention Indices of Essential Oils with the aid of the Van den Dool and Kratz equation and Bézier Curves
Authors: BATTALOGLU Rifat
Published: July 2021

The aim of this article is to study the relationships and models among
the Van den Dool and Kratz equation, the gas chromatography, and the
Bézier curves constructed by aid of the Bernstein polynomials. Another
aim of this article is to introduce open problems that contribute to
real-world problems involving mathematics, chemistry, and plant biology,
including the Van den Dool and Kratz equation, the gas chromatography,
and Bézier curves. Searching for the solutions of these problems may
have qualities that will create the potential that can enter the field
of study of many researchers. As a result of these goals, the usability
of Bézier curves was investigated while determining the chemical
composition of essential oil obtained from P. Aladaghensis Leblebici. By
applying the retention index from the Van den Dool and Kratz equation
and evaluating chemical compositions of the essential oil are
characterized by gas chromatography-mass spectrometry (GC-MS). The Van
den Dool and Kratz equation results have the potential to be used not
only in the chemical compositions of the oils, but also in applied
mathematics and other fields. Moreover, we construct a new special
finite sum. A lower bound and inequality are also given for the finite
special sum involving the dead time associated with the isocratic step.
Some applications and criticisms are given that include this lower bound
and inequality for these sums and its effects on the chemical
compositions of essential oil and the Van den Dool and Kratz equation.
Neuroplasticity after olfactory training in post-surgical olfactory impaired patients, using functional magnetic resonance imaging. A randomized pilot study
Authors: García-Huidobro Francisco , Montalba Cristian , Rosenbaum Andres , Jofre David , Andia Marcelo , Villanueva Pablo , Callejas Claudio , Gonzalez Claudia
Published: July 2021

Abstract Objectives: Treatment for olfactory dysfunction is challenging
due to limited therapeutic options. Olfactory training has shown
improvement in smell identification, discrimination, and threshold for
odor detection. The primary objective is to assess the effect of
olfactory training in patients with olfactory dysfunction after
pituitary surgery, using functional Magnetic Resonance Imaging (fMRI).
Design: This study was designed as a two-arm pilot clinical trial.
Setting: Chilean tertiary hospital providing endoscopic pituitary
surgery and olfactory evaluation and treatment. Participants: We
included two cohorts of subjects: healthy subjects, and patients with
post-surgical olfactory dysfunction. Healthy patients were recruited
voluntarily at the ENT clinic to assess fMRI testing paradigms and as a
control group for the olfactory dysfunction group. Main outcome
measures: The main outcome measures were functional activation analysis
obtained by fMRI. Olfactory test assessment scores were also obtained
during each testing session. Results: 119 patients that underwent an
endoscopic transsphenoidal approach were contacted and surveyed for
olfactory dysfunction. Twelve patients met inclusion criteria, but six
of them declined to participate. Six patients were randomized using
computer-generated random numbers. The patients in the trained group
showed a significant improvement in the olfactory test results after
olfactory training compared to the no-training group (P <
0.05). The group that underwent olfactory training showed more areas of
activation after training than in baseline analysis (P <
0.05). Conclusion: Patients that underwent olfactory training showed
significant improvement in olfactory testing. fMRI results showed more
activated areas in the olfactory training group, which could be
compatible with neuroplasticity.
Detection of Cavernous transformation of the portal vein in a 22-year-old male with upper gastrointestinal bleeding and anemia by Abdominal Duplex Ultrasonography. A Case Report.
Authors: Arkorful Joseph , Bredu Theophilus Adu - , Otoo Obed
Published: July 2021

Cavernous transformation of the portal vein (CTPV) is a rare condition
characterized by the formation of multiple tortuous tiny blood vessels
within and around a portal vein which has been occluded by thrombus.
Early diagnosis of CTPV is relevant for timely intervention which could
save the liver from non-reversible damage
Tiny Video Networks
Authors: Piergiovanni AJ , Angelova Anelia , Ryoo Michael
Published: July 2021

Automatic video understanding is becoming more important for
applications where real-time performance is crucial and compute is
limited. Yet, accurate solutions so far have been computationally
intensive. We propose efficient models for videos - Tiny Video Networks
- which are video architectures, automatically designed to comply with
fast runtimes and, at the same time are effective at video recognition
tasks. The Tiny Video Networks run at faster-than-real-time speeds and
demonstrate strong performance across several video benchmarks. These
models not only provide new tools for real-time video applications, but
also enable fast research and development in video understanding. Code
and models are available.
Quantum Propagators for Geodesic Congruences
Authors:   Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Cd. Universitaria, 04510, Ciudad de México, México, Socolovsky Miguel
Published: July 2021

Using the Raychaudhuri equation, we show that a quantum probability amplitude (Feynman propagator) can be univocally associated to any timelike or null affinely parametrized geodesic congruence.
BIO V: APLICATIVO PARA O ENSINO DE BOTÂNICA NAS ESCOLAS DO CAMPO
Authors: Silva Rocha Iluanny da , Galdino Andrade Thales Eduardo , Laremberg Alves Cavalcanti Ágata Laisa , Ferreira Costa Marcones
Published: July 2021

O presente estudo tem como objetivo compreender a importância do aplicativo Bio V para a melhoria do ensino de botânica nas escolas do campo. Este aplicativo foi elaborado de forma a possibilitar a compreensão dos conceitos botânicos aos alunos campesinos. Trata-se de uma pesquisa qualitativa que descreve o processo de elaboração e avaliação do uso do aplicativo Bio V com dez profissionais da Educação Básica do município de Floriano-Piauí, que atuam em escolas do campo. O Bio V foi avaliado positivamente pela maioria dos participantes, sendo um instrumento facilitador do processo de ensino e aprendizagem. Os dados afirmam a importância do desenvolvimento de ferramentas tecnológicas que aproximem os alunos dos conteúdos de forma dinâmica, objetiva e interativa. Dessa forma, o estudo é de grande relevância para o ensino de botânica, sobremodo, para o fortalecimento da Educação do Campo.
A ANIMAÇÃO ESTÁ PARA PEIXE: O GÊNERO DE DIVULGAÇÃO CIENTÍFICA NA SÉRIE PEIXONAUTA
Authors: Moreira Câmara Yara , Alves de Almeida Sheila
Published: July 2021

Este trabalho tem como objetivo investigar a comunicação da ciência na série animada Peixonauta. Para tanto, foi realizada uma análise documental de 27 episódios da segunda temporada da série. Baseado na concepção de ciência, atividade dos cientistas e concepção de infância evidenciou-se que, embora não seja produzido para fins escolares, os objetivos dessa animação são educacionais e seguem a uma tendência que se aproxima, em alguma medida, de concepções escolares de ciência. Embora a vida dos animais seja um aspecto excessivamente explorado nesses materiais, informações sobre os bichos que estão próximos às crianças são pouco frequentes na animação. Reitera-se a importância dessa animação como possibilidade de promoção da linguagem de divulgação científica para crianças.
METODOLOGIA DA PROBLEMATIZAÇÃO: REFLEXÕES ACERCA DA QUALIDADE DE VIDA COM ALUNOS UNIVERSITÁRIOS
Authors: Cristina Foss de Zorzi Fernanda , Bulhosa de Souza Michele , Pereira Correia Sara Lima , Copetti Jaqueline
Published: July 2021

Dentre os fatores implicados na aprendizagem de estudantes do Ensino Superior, pode-se destacar a qualidade de vida. O objetivo deste relato foi problematizar a qualidade de vida com alunos universitários por meio de aproximações da Metodologia da Problematização (MP) com o arco de Maguerez. As informações apresentadas de forma descritiva foram coletadas seguindo as etapas de desenvolvimento do arco e de questionário, antes e após a realização da oficina, sendo que, para a análise de tais informações, foi utilizada a análise temática. Como resultado, verificou-se a efetividade da utilização da MP como método didático-pedagógico para auxiliar os participantes na compreensão sobre sua qualidade de vida na percepção da necessidade de mudanças de comportamentos e atitudes para melhoria e manutenção dessa qualidade de vida. Em processos de ensino-aprendizagem, o uso da MP possibilita gerar o protagonismo do aluno do Ensino Superior quando alinhado à realidade dele.
Influence of Predict Observe Explain (POE) Worksheet on Critical Thinking Ability on Impulse and Momentum
Authors:   Department of Physics Education, University of lampung, Indonesia, Wicaksono B. Anggit , Putu Nyeneng I Dewa ,   Department of Physics Education, University of lampung, Indonesia, Verawati Simaibang Wilda ,   Department of Physics Education, University of lampung, Indonesia
Published: July 2021

The study aims to determine the influence of the use of POE-based worksheets against the learners ' critical thinking ability on impulse and momentum material. This study was conducted in one of the state high schools in Bandarlampung, in the even semester of the school year, 2019/2020. The Research Population is all students of class X MIA. The design of this research uses the Non-Equivalent Pretest Posttest Control Group Design. This study uses a purposive sampling technique with X-grade samples MIA3 amounted to 36 learners as experimental classes and X-grade MIA4 numbered 36 students as control classes have relatively the same initial skills before the researcher performs the treatment. The results of the Independent sample T-Test show POE-based Worksheets on impulse and momentum material have a significant effect on learners ' critical thinking skills. Classes using the worksheets POE learning model showed higher critical thinking abilities with an average of N-Gain 0.70 versus a control class not exposed to the worksheets model Predict-Observe-Explaindengan N-Gain 0.60. This suggests that the use of POE-based worksheets in this research considerably influences learners ' critical thinking skills. Keywords: Critical thinking ability, Momentum impulse, Predict observe explain
The Effect of Problem Based Learning to Improve Students' Creative Thinking Abilities
Authors:   Departement of Physics Education, Lampung University, Indonesia, Wibowo Syaiful , Suyanto Eko ,   Departement of Physics Education, Lampung University, Indonesia, Putu Nyeneng I Dewa ,   Departement of Physics Education, Lampung University, Indonesia
Published: July 2021

This study was aimed to determine students' creative thinking abilities after being given a problem-based learning (PBL) model with practicum method on energy conversion material. The Quasi-experiment with one group pretest-posttest design was used in this study. The measurement of the effect of students' creative thinking abilities uses 10 questions of creative thinking abilities with indicators, i.e. elaboration and flexibility. The questions were given to students before and after being treated and the results of the data were analyzed using paired sample T-Test and N-Gain. Hypothesis test results about the effect of students' creative thinking abilities using problem-based learning models with practicum on energy conversion material obtained asymp sig values. (2 tailed) of 0.001 and the value of N-Gain is 0,672. Based on these results, it is known that students experience an increase in the ability to think creatively after being given learning with a problem-based learning model with practicum methods on energy conversion material. Therefore, problem-based learning models with the practicum method affects students' creative thinking abilities on energy conversion material. Keywords: Creative thinking, Practicum method, PBL
On Physical Modeling of the Current Measurements in a Jet of Fire Extinguishing Agent
Authors:   LLC Gefest Grupp, Meshalkin E.A. , Bordakov V.N. ,   LLC «SOVA», Kazakov A.V. ,   FGBU VNIIPO of EMERCOM of Russia
Published: July 2021

In accordance with the current regulations for extinguishing a fire, including without disconnecting electric power supply of direct (alternating) current of industrial frequency, fire extinguishers are allowed with a leakage current in a jet of extinguishing agent of not more than 500 µA, which is measured with an applied potential difference of 36 kV. Therefore, the recommendations for preliminary disconnection of electric power supply do not cover fire extinguishers that are certified according to the level of safe leakage current. The article deals with fire extinguishing agents based on aqueous solutions. It is obvious that the development of such fire extinguishers requires additional analytical and experimental research. The purpose of this article is the computational and physical modeling of the current leakage process, and the justification of the requirements for the parameters of the extinguishing agent flow at the outlet of the exhaust nozzle. As a result of the conducted research, the calculation methodоlogy and a scheme of the physical model of a high-voltage test bench for measuring the leakage current were developed based on measuring the active resistance of fire extinguishing agent flow in a constant voltage field and the electric capacitance of the measuring space of the test bench. The developed methodology allows to increase the reliability of the calculated results and significantly reduce the cost of working out the nozzle design. Measured at an applied voltage of 36 kV of industrial frequency, the amount of current leakage in a jet of the extinguishing agent is satisfactorily consistent with the calculation. The obtained computational and experimental results allowed to determine the range of permissible values of the active resistance and the requirements to the length of the continuous section of the jet of the extinguishing agent, which ensure safe use of the fire extinguisher for fire-fighting, including without disconnecting the electric power supply of the constant (alternating) current of industrial frequency with a voltage up to 1000 V.
Completeness of Use of the Mineral Resources, and the Health of the Population in the Mining Region
Authors:   GPI VSC RAS, Golik V.I. , Razorenov Yu.I. ,   Platov South-Russian State Polytechnic University (NPI), Vagin V.S. ,   Platov South-Russian State Polytechnic University (NPI), Puzin V.S. ,   Platov South-Russian State Polytechnic University (NPI)
Published: July 2021

The study of the biochemical status of the population revealed a decrease in the antiradical activity and inhibition of the oxidase activity. The dynamics of glutathione reductase activity was established, which is a consequence of metal-induced intoxication. Indicators of the health status of the population of mining areas correlate with the number of pollutants entering the environment and the size of the contaminated area. The advances development of metal-induced oxidative stress was established, which reduces the quality and duration of human life. The health of the inhabitants of the mining region and the loss of metals during the extraction of ores depend on the share of dust and fine ore fractions, which, during enrichment end up in waste and are carried by water and wind. It is shown that the minimization of chemical pollution of the environment with metals is possible with the use of technologies that limit the contact of ores with the environmental ecosystems. At the same time, aggressive small fractions do not enter the habitat, and the extraction efficiency increases due to the recovery of the previously lost metals. The technology of leaching metals in the underground blocks was industrially used for more than half a century ensuring in some cases a large share of the production capacity of the enterprises. Leaching in the disintegrators passed the stage of laboratory research on the Sadon polymetallic ores and ferruginous quartzites of the Lebedinskoye deposit. The results of study of the quality of mined ores use, including the effect of dust and fine ore fractions on the health of the population are consistent with the conclusions of the researchers. It is concluded that there is a correlation between the health of residents of residential areas and the quality of mined ores use. Therefore, expanding the scope of metal leaching technologies is the key in solving the problems of rational use of subsoil resources and ensuring the safety of workers.
Artificial Intelligence for Safe Maintenance, Operation and Repair Technologies for Power Supply Devices of JSC «Russian Railways»
Authors:   Ural State University of Railway Transport, Pazukha A.A.
Published: July 2021

Automation of the technological processes is rapidly improving with the emergence and development of the artificial intelligence. More complex applications and platforms are being developed to better analyze the production process. Artificial intelligence and robotics are becoming efficient and priority tools for removing employees from the hazardous areas, minimizing the influence of the human factor, preventing, and predicting industrial injuries, automating production, improving labor productivity and quality of work. Artificial intelligence tools used in the world practice and wearable protective devices that serve to minimize industrial injuries and increase labor productivity are considered. The analysis of statistical data on injuries to the personnel of JSC «Russian Railways» during maintenance, operation and repair of power supply devices is presented. Further development and implementation of the artificial intelligence, the latest methods, and technical means of protecting railway personnel from electric shock injury is becoming an urgent task. The article considers video surveillance system «DOZOR» used in the RZD holding, which contributes to strengthening labor and technological discipline at production facilities, enhancing occupational safety, improving the quality of work- places preparation, and performing technological operations. It also allows you to assess professional competence and identify gaps in the theoretical and practical knowledge of the employees. It is proposed to introduce a computer vision device into «DOZOR» video surveillance system, which will ensure compliance with the requirements of the occupational safety rules and regulations in real time. It will also make it possible to promptly inform the employee and his managers about all the violations at a particular workplace for taking timely measures on preventing accidents and injury to the personnel.
Experimental Study of the Processes of Evacuation and Rescue of People in Case of Fire from the Pipe Rack of the Technological Line of the Gas Processing Plant
Authors:   FGBU VNIIPO EMERCOM of Russia, Lagozin A.Yu. , Shebeko Ju.N. ,   FGBU VNIIPO EMERCOM of Russia, Leonchuk P.A. ,   FGBU VNIIPO EMERCOM of Russia, Klementiev B.A. ,   OOO Arktic LNG 2, Samoshin D.A. ,   State Academy of Fire Fighting Service of EMERCOM of Russia
Published: July 2021

To meet the requirements of Federal Law № 123-FZ dated July 22, 2008 «Technical Regulations on fire safety requirements», it is required to determine the estimated time of people evacuation and rescue from the hazardous production facility. To solve this problem, an experimental study of the processes of people evacuation and rescue from the structure of the real gas processing plant was conducted. Evacuation and rescue were carried out from the sections of the pipe rack most remote from the exits from it. The ways for the evacuation and rescue included both horizontal parts and stairs. Rescue was carried out using special stretchers, in which there was a dummy imitating an injured person. The time of evacuation and rescue was determined when moving both down and up, which can take place at the enterprises of the oil and gas industry. The time of movement in different sections was determined by the stopwatches. Based on the measured time and the parameters of the sections along which the movement took place, the movement speeds during evacuation and rescue were found. The evacuation experiments involved untrained people, while the rescue experiments involved professional rescuers. The average movement speeds in the evacuation simulation were as follows: down the stair — 100 m/min, up — 44 m/min, along the horizontal section — 193 m/min. The average movement speeds with a victim during the simulation of rescue were the following: down the stair —22 m/min, up —16 m/min, along the horizontal path — 102 m/min.
Tests of Samples of Emulsion Explosive Senatel Magnum before and after Introduction of the Marking Composition for Explosive Properties and Safety Criteria
Authors:   Al-Farabi Kazakh National University, Amir Zh.A. , Bayseytov D.A. ,   Al-Farabi Kazakh National University, Gizatova S.E. ,   Al-Farabi Kazakh National University, Kudyarova Zh.B. ,   Al-Farabi Kazakh National University, Tulepov M.I. ,   Al-Farabi Kazakh National University
Published: July 2021

The article is devoted to testing samples of the emulsion explosive Senatel Magnum before and after the introduction of the marking composition for explosive properties and safety criteria. It was established that the mixture of marking substances, which was introduced into the composition of the emulsion explosive Senatel Magnum, does not affect its explosive properties, as well as its safety in use during operation and conduct of blasting operations, since no inconsistencies were detected during tests by the specialists of explosive materials testing laboratory of the Expert Certification Center of Explosive Materials LLP. Various dyes were selected as marking agents. This choice is due to the fact that the dyes have a relatively low price, are very common on sale, when mixed with other substances, in particular industrial explosives, are determined visually. The technology was tested related to the introduction of marking additives into the compositions of multicomponent explosives without disrupting the technological process of their manufacture. Laboratory and field studies were carried out concerning safety criteria for explosives containing a marking composition. Thus, the urgent task is to ensure the possibility of marking (tagging) industrial explosives at the stage of their production with hidden marking additives, which will allow the product itself to be identified with the help of technical means — as an explosive, and to establish the brand of the detected explosive, manufacturer, and other required information.
Pengaruh Perbedaan Mordan Terhadap Hasil Pencelupan Pada Bahan Katun Menggunakan Ekstrak Kulit Buah Kopi (Coffea)
Authors: Saadah Saadah , Efi Agusti
Published: July 2021

Abstrak

Perkembangan warna tekstil dengan zat kimia banyak membawa dampak negatif terutama bagi lingkungan dan kesehatan kulit. Oleh sebab itu orang kembali menggunakan zat warna alam, maka dalam penelitian ini meneliti kulit buah kopi untuk zat warna alam.

Jenis penelitian ini merupakan penelitian eksperimen. Data yang digunakan adalah data primer yang bersumber dari 15 orang panelis, kemudian data yang terkumpul diolah dan dianalisis menggunakan Uji Friedman K-Related Sample dan persen dengan SPSS (Statistical Product and Service Solution) Versi 21.0. penulis melakukan eksperimen kulit buah kopi menjadi ekstrak warna dengan perbndingan 1:10 menggunakan mordan asam cuka, soda kue dan kapur sirih.

Pencelupan bahan katun dengan ekstrak kulit buah kopi (Coffea) menggunakan mordan asam cuka Off-White dengan kode warna #1DBCA dan kerataan warna yang rata, pencelupan ekstrak kulit buah kopi (Coffea) menggunakan mordan soda kue menghasilkan warna Wheat Lihgt Brown dengan kode warna #FDB4D4 dan kerataan warna yang cukup rata, pencelupan ekstrak kulit buah kopi (Coffea) menggunakan mordan kapur sirih menghasilkan warna Sepia Brown dengan kode warna #974706 dan dengan kerataan warna yang rata. pada kerataan warna menunjukkan hasil 0,528 > 0,5 yang artinya HO diterima. artinya tidak terdapat pengaruh yang signifikan akibat perbedaan mordan terhadap kerataan warna dalam pencelupan bahan katun.

Kata Kunci: pengaruh, perbedaan mordan, pencelupan, bahan katun, ekstrak kulit buah kopi

Abstract

The development of textile colors with chemicals has many negative impacts, especially on the environment and skin health. Therefore people re-use natural dyes. So in this study, the authors examined the skin of coffee fruit for natural dyes.

This type of research is experimental research. The data used are primary data sourced from 15 panelists, then the collected data is processed and analyzed using the Friedman K-Related Sample Test and percent with SPSS (Statistical Product and Service Solution) Version 21.0. The author conducted a coffee fruit skin experiment into a color extract with a ratio of 1:10 using mordan vinegar, baking soda, and whiting .

Immersion of cotton with coffee fruit skin extract (Coffea) using mordan acid vinegar Off-White with color code # 1DBCA and flat color uniformity, dyeing coffee fruit skin extract (Coffea) using mordan soda cake to produce Wheat Light Brown color with color code # FDB4D4 and fairly flat color evenness, immersion extract of coffee fruit skin (Coffea) using mordan whiting produces Sepia Brown color with color code # 974706 and with flat color evenness. on the flatness of color shows the results 0.528> 0.5, which means that HO is accepted. meaning that there is no significant effect due to differences in mordan on the evenness of color in dyeing cotton.

Keywords: influence, differences in mordan, dyeing, cotton, coffee skin extract
PENGGUNAAN MODEL PROBLEM BASED LEARNING DALAM MENGATASI PERMASALAHAN IPA TEMATIK DI SD
Authors: JS SUNDARI , Fitria Yanti
Published: July 2021

Pemblajaran tematik merupakan pembelajaran yang menggabungkan beberapa mata pelajaran yang saling berkaitan satu sama lain yang digabungkan dalam satu tema pembelajaran. Pembelajaran IPA adalah  salah mata pelajaaran yang terkait dalam pembelajara tematik. Pembelajaran IPA merupakan ilmu yang berhubungan dengan alam dan kebendaan, yang disusun secara sistematis melaui percobaan dan pengamatan sehingga dapat memecahkan suatu masalah dan memperoleh hasil yang berlaku tidak hanya pada satu orang melainkan pada beberapa percobaan dengan hasil yang sama dan konsisten. Dalam pelaksanaan pembejaaran IPA tematik terdapat beberapa kendala yang memunculkan permasalahan dalam pembelajaran, sehingga dibutuhkan model pembelajaran yang cocok untuk dapat mengatasi permaslahan tersebut. Salah satu model pemblajaran yang digunakan adalah model problem based learning, yang berbasis masalah, yang melibatkan siswa untuk menemukan pemecahan masalah.
PERBEDAAN KEMANDIRIAN BELAJAR SISWA ANTARA MODEL BLENDED LEARNING BERBASIS MASALAH DAN KONVENSIONAL DI SMP
Authors:   Program Magister Pendidikan Matematika, Universitas Negeri Medan, Daulay Khairul Ramadhani , Mulyono Mulyono , Mariani Mariani
Published: July 2021

Penelitian ini bertujuan untuk: 1) mengidentifikasi perbedaan kemandirian belajar siswa setelah menerapkan model blended learning berbasis masalah dan konvensional, 2) melihat interaksi antara model pembelajaran dan kemampuan awal matematika terhadap kemandirian belajar siswa. Populasi dalam penelitian ini adalah seluruh siswa SMP Swasta Imelda Medan dan sampel dalam penelitian ini adalah siswa kelas VIII SMP sebanyak 61 orang.Penelitian ini merupakan penelitian eksperimen semu. Instrumen penelitian ialah angket dan observasi aktivitas siswa selama pembelajaran.Data yang dikumpulkan tersebut kemudian dianalisis dengan menggunakan ANAVA dua jalur pada program SPSS. Berdasarkan hasil analisis data dapat disimpulkan bahwa: 1) terdapat perbedaan yang signifikan antara model blended learning berbasis masalah dan pembelajaran konvensional terhadap kemandirian belajar siswa. 2) Terdapat interaksi antara model pembelajaran dan kemampuan awal matematika terhadap kemandirian belajar siswa.
DEVELOPMENT OF PIANO SCHOOLS IN CHINA AND UKRAINE: HISTORICAL CONTEXT
Authors: Wang Boyuan
Published: July 2021

The article identifies the historical context of the piano schools development in China and Ukraine. The factors that formed the basis of the periodization of the studied phenomenon in both countries are identified. The periodization of the piano schools development in China and Ukraine has been carried out. As a result of a comparative analysis of the historical development of piano education in China and Ukraine, the common features of training pianists during a certain historical period were clarified, such as: the influence on the development of piano education of Western European and Russian traditions; national basis for the development of piano schools in both countries; opening of a significant number of art education institutions, including higher education institutions; availability of a large number of music programs of international level; opening of factories for the production of piano; rapid introduction of conservatory piano education.
ОСОБЛИВОСТІ ФОРМУВАННЯ ПРОФЕСІЙНОГО КРЕДО МАЙБУТНЬОГО ФАХІВЦЯ ОХОРОНИ ПРАЦІ
Authors:   Кам’янець-Подільський національний університет імені Івана Огієнка, Білик Роман
Published: July 2021

У статті теоретично обґрунтовано, що формування найвищих рівнів професійних компетентностей і світогляду майбутнього фахівця можливе завдяки вдалим управлінським впливам і власним діям індивіда, які формують його базові професійні якості. Відображено зміст поняття «професійне кредо», яке нами трактується, як характеристика особистості, що відображає професійні принципи майбутнього фахівця. Кредо є відображенням життєвої системи правил, яких особистість неухильно дотримується в складних морально-етичних або професійних ситуаціях. Обґрунтовано позитивний та негативний вплив сформованого в особистості «професійного кредо» на розв’язання важливих професійних завдань та прийняття відповідальних рішень. Визначено структуру вимог, які висуваються роботодавцями до майбутніх фахівців працеохоронної галузі.
КУРСОВЕ ПРОЄКТУВАННЯ ЯК ФОРМА САМОСТІЙНОГО НАУКОВОГО ДОСЛІДЖЕННЯ СТУДЕНТІВ
Authors:   Комунальний заклад «Прилуцький гуманітарно-педагогічний фаховий коледж імені Івана Франка» Чернігівської обласної ради, Грона Наталія , Ющенко Валентина ,   Відокремлений структурний підрозділ «Фаховий коледж транспорту та комп’ютерних технологій НУ «Чернігівська політехніка», Попружна Олена ,   Відокремлений структурний підрозділ «Фаховий коледж транспорту та комп’ютерних технологій НУ «Чернігівська політехніка»
Published: July 2021

У статті з’ясовано, що першим кроком до наукових досягнень є курсова робота (курсове проєктування). Така науково-дослідницька робота студентів – складник професійної підготовки, що передбачає навчання методології й методики дослідження, а також систематичну участь у дослідницькій діяльності, озброєння технологіями та вміннями творчого підходу до вирішення окремих наукових проблем. Визначено й обґрунтовано шляхи вдосконалення курсового проєктування студентів з методики навчання української мови в умовах інформаційного середовища.