scholarly journals Development of Technology for Producing Stable Composite Fuels from Carbon

2021 ◽  
Vol 7 (2) ◽  
pp. 208-212
Author(s):  
B. Bekmuratova

The subject of this research is the process of obtaining stable composite fuel (CF) from hydrocarbons. The purpose of the work is to develop a technology for obtaining a stable composite fuel from hydrocarbons with the effect of cavitation. Cavitation of water in the making of CF has a positive effect contributing to the appearance of reactive radical particles. The obtained stable CF consists of 50% gasoline, 49% water, 1% potassium permanganate. As a result, a technology was developed for obtaining a stable CF, a special apparatus for the preparation and combustion of composite fuels with a spiral heater-burner was developed. It has been determined that during combustion, potassium permanganate increases the oxygen balance of the solution.

2020 ◽  
Vol 8 (1) ◽  
pp. 40
Author(s):  
Zukhairatunniswah Prayati

This study investigated the effect of team product to improve students’ creativity in writing at the 8th-grade students of SMPN 1 Jonggat, Central Lombok in the academic year 2018/2019. The research was designed as quasi experiment research. The students were divided into the experimental group and control group. The experimental group was treated using the team product method while the control group was subjected to a conventional method. The data were analyzed using descriptive and inferential analysis. The data in this research was taken from the mean scores of students’ achievement and the score percentages. The subject of this research was the 8th-grade students of SMPN 1 Jonggat, which consisted of 54 students. The instruments of this research were tests and questionnaires. The mean score of students’ creativity in the experimental group was 75 and the writing skill was 76. It was higher than the students in the control group. It can be concluded that the team product had a positive effect on students’ writing skills in relation to creativity at SMPN 1 Jonggat.


2020 ◽  
Vol 16 (1) ◽  
pp. 43-50
Author(s):  
Nikita L. Lyutov

The Subject of the Study. The article deals with an issue of impact of atypical employment on the socioeconomic development on micro- and macro levels. The Purpose of the Study is to discover the links between the introduction of atypical forms of employment and socioeconomic development. The Main Theoretical and Empirical Aspects of Study: as the implementation of various forms of atypical employment is one of the aspects of flexibility in employment relations’ regulation, the author starts with a general analysis of impact of general flexibility of employment on the economy. This section of the article contains the conclusion that a thesis about positive effect of labour law flexibility on the economic effectiveness remains unproven; – the second part of the article contains an analysis of the relations between the specific forms of atypical employment and the state of economy. The conclusion has been made that ill-considered implementation of such forms into the labour legislation leads to such negative consequences to the economy as the labour market segmentation and volatility, rising incomes gap and lowering the purchasing power. – the thesis is made that Russian labour legislation modification in the field of atypical employment development is only acceptable with a view to make the already existing atypical employment come out of informal sector, and in a way that takes into account the interests of both parties of the employment relationship.


2018 ◽  
Vol 64 (No. 11) ◽  
pp. 546-550
Author(s):  
Petr Elzner ◽  
Miroslav Jůzl ◽  
Pavel Kasal

Small-plot field trials monitored the effect of drip irrigation of potatoes on tuber and starch yield. The trials were performed at two different localities in two trial years, 2016 and 2017. The subject of the evaluation included two cultivars with different vegetation periods (the very early cv. Monika and the semi-early cv. Jolana). Four repeated trials studied 4 irrigation treatments according to the available water capacity (AWC) of the soil, i.e. without irrigation, irrigation when soil humidity decreased below 60, 65 and below 70% AWC. All monitored parameters reflected a positive effect of irrigation in comparison to the non-irrigated control. The Žabčice locality showed the highest tuber and starch yields mostly after medium-intensity irrigation. The Valečov locality achieved the highest tuber and starch yields after the highest-intensity irrigation. Subject to the locality and the cultivar, the recommendation is to introduce automatic irrigation start when the soil humidity drops to 65% AWC for heavy soils and 70% AWC for medium heavy soils.


It has been demonstrated in a previous communication that potassium permanganate is decomposed on illumination by light from the quartz mercury-vapour lamp. It was, therefore, of interest to determine the wave-length of the chemically active light and to investigate if possible the validity of the Einstein law of photo-chemical equivalent which so far has been stated not to apply to substances in solution. A study was, therefore, made of the absorption spectrum of potassium permanganate, particularly with reference to the ultra-violet, since this region is the most lacking in qualitative data. The absorption in the visible regions of the spectrum has been studied by many authors, notably Formänek, and has recently been the subject of an interesting contribution by Hagenbach and percy, who have the subject of an interesting contribution by Hagenbach and percy, who have resolved it into a simple spectral series.


2014 ◽  
Vol 2 (2) ◽  
pp. 183 ◽  
Author(s):  
Nur Sri Widyastuti ◽  
Pratiwi Pujiastuti

<p class="PRIMAJUDULArtikelEnglish">Penelitian ini bertujuan untuk (1) mengetahui pengaruh penggunaan Pendidikan Matematika Realistik Indonesia (PMRI) dan <em>Direct Instruction (DI)</em> dalam pembelajaran matematika materi jarak dan kecepatan terhadap: pemahaman konsep dan berpikir logis Siswa, (2) mengetahui pengaruh positif pembelajaran matematika dengan PMRI terhadap pemahaman konsep siswa, dan (3) mendeskripsikan pengaruh positif pembelajaran matematika dengan PMRI terhadap berpikir logis. Populasi penelitian adalah siswa kelas V segugus II Kecamatan Umbulharjo dengan sampel 3 sekolah dengan subjek penelitian 91 siswa. Instrumen yang digunakan adalah tes pemahaman konsep dan berpikir logis awal maupun akhir. Analisis data yang digunakan adalah uji <em>multivariat of covariance</em> (MANCOVA), kemudian dilanjutkan dengan <em>independent sample t-test</em> dengan taraf signifikansi 0,05. Hasil penelitian ini menunjukkan bahwa: (1) terdapat pengaruh yang signifikan antara pembelajaran matematika dengan PMRI dan <em>DI </em>dalam pembelajaran matematika materi jarak dan kecepatan terhadap pemaham-an konsep dan berpikir logis siswa, (2) terdapat pengaruh positif pembelajaran matematika dengan PMRI terhadap pemahaman konsep siswa daripada <em>Direct Instruction</em> (DI), dan (3) terdapat pengaruh positif pembelajaran matematika dengan PMRI terhadap berpikir logis siswa daripada <em>Direct Instruction</em> (DI) bagi siswa kelas V Sekolah Dasar segugus II Kecamatan Umbulharjo Kota Yogyakarta.</p> <p class="PRIMAABSTRAKKeywords"><strong>______________________________________________________________________________________________________________________________________________________________________________________________________</strong></p> <p><strong>THE EFFECTS OF REALISTIC MATHEMATICS EDUCATION INDONESIA (PMRI) ON UNDERSTANDING CONCEPTS AND LOGICAL THINKING STUDENTS<br /></strong></p> <p class="PRIMAABSTRAKJudulEnglish"><strong>ABSTRACT</strong></p> <p class="PRIMAABSTRAKBodyEnglish">This research aimed to (1) know the effect of the use of Realistic Mathematics Education in Indonesia (PMRI) and Direct Instruction (DI) on the subject of distance and speed of the: Understanding the concept and Logical Thinking students, (2) know the positive influence effect of the use of Realistic Mathematics Education in Indonesia (PMRI) of the Understanding the concept, and (3) describe the positive influence effect of the use of Realistic Mathematics Education in Indonesia (PMRI) of the logical thingking students. The population of the study was students in the V class group 2 District of Umbulharjo with sampling selected three classes using with 91 subject students. Class experiments were treated using PMRI learning and classroom learning control with Direct Instruction (DI). Data collection techniques used are testing techniques to determine the ability of Understanding Concepts and Logical Thinking students on the subject of distance and speed after treatment. The data analysis technique used is the multivariate test of covariance (MANCOVA), followed by independent sample t-test with a significance level of 0.05. The results of this study indicate that (1) there are significant differences in the learning of mathematics with PMRI and DI in mathematics learning material to distance and speed of the: understanding of the concept and logical thinking students, (2) Learning math using PMRI gives more positive effect on the understanding concepts of students rather than using Direct Instruction, and (3) Learning math using PMRI gives more positive effect on the logical thinking of students rather than using Direct Instruction for Fifth Grade Group 2 Elementary School Umbulharjo District of Yogyakarta.</p> <strong>Keywords:</strong> mathematics learning, PMRI, direct instruction, understanding concepts, logical thinking<br />


2021 ◽  
Vol 6 (1) ◽  
pp. 56
Author(s):  
Alireza Miremadi ◽  
Javad Kenarroudi ◽  
Omidreza Ghanadiof

The subject titled evaluation on role of Electronic Word of Mouth (EWOM) in feelings and behavior of customers in E-shops was expressed in Digi-Kala Company. Then, research hypotheses and objectives were proposed and methodology, statistical population and needed sample of analysis technique were introduced to achieve goals and results of hypotheses. The findings suggest significant positive effect of (EWOM) on attitude of consumers and their positive emotions. Similarly, social positive and normal emotions may also have significant impact on attitude of consumers. At the same time, negative emotions of consumers have positively affected consumers’ attitudes as well. Finally social norms and attitudes of consumer may have significant positive effect on behavior of consumers.


2021 ◽  
Vol 18 ◽  
Author(s):  
Marguerite Claire Sendall ◽  
Athena Ng ◽  
Laura McCosker

Introduction Previous studies have shown teaching public health in medical courses improves students’ analytical, problem-solving and communication skills. However, little research to date has shown if public health teaching is helpful to paramedic students. The aim of this study was to examine if having paramedic tutors teach public health had a positive effect on students’ learning and interest in public health. Methods 184 second-year paramedic students at an Australian university completed a printed survey and provided feedback about their learning experience. Students answered multiple choice and open-ended questions about whether their understanding of a public health subject was improved by having a paramedic tutor, and if having different tutors each week affected students’ learning. Results Most students reported their understanding of public health improved when the subject was taught by a paramedic tutor and when paramedic scenario examples were included in teaching. Nearly half felt having different tutors each week made learning difficult. The following themes emerged from student narratives: the relevance of public health to their career; an improved understanding of public health; a realisation about the importance of public health; difficulties presented by an inconsistent teaching style; and poor follow-up and conflicting advice. Conclusion Teaching public health from a paramedic perspective enabled students to understand the relevance of paramedic practice and the role paramedics play in the public health system. Having the same paramedic tutor teaching each week helped students understand the relationship between public health and paramedic practice.


2019 ◽  
Author(s):  
syarifa aulia ◽  
Hade Afriansyah

Teachers in schools are the subject of research by taking a sample of 180 teachers, using the proportional random sampling technique, and using questionnaires about the implementation of educational supervision by the school principal and the results of the teacher performance assessment data that the school has. And from the research and assessment it can be seen that the implementation of supervision of education by the principal does not have a positive effect on teacher performance and the implementation of supervision of education by the principal is also a weak influence and even very weak towards the performance of teachers in schools.


2019 ◽  
pp. 29-43

TEIXEIRA, M.E. e PEREIRA, J.L. Importância da preparação física para o paciente com doença de Parkinson. Revista Científica JOPEF, Vol.28, n.1, pp.29-43, 2019. Parkinson's disease (PD) is a chronic progressive neurodegenerative disease described by the first in 1897 as "tremor paralysis." Its symptoms are variable, the most characteristic being tremor of the hands and loss of balance and muscular strength. It usually affects men over the age of 60, but there are forms that can occur in younger individuals. The progression of symptoms causes the quality of life of the patient to deteriorate significantly, leading to the inability to perform daily activities. In addition to pharmacological treatment, physical exercise has been indicated as a way to attenuate and slow the progression of symptoms. The objective of this work is to carry out an integrative review of literature on the subject, in which articles published over the last 10 years have been analyzed, thus seeking to update the theme. In general, it was possible to perceive a positive effect of the practice of specific physical exercise programs in patients with PD, with improvement of the quality of life. In vitro studies also demonstrated the protective effect of physical exercise on the onset of the disease. Keywords: Parkinson's disease; Physical exercise; Neuroprotection; Quality of life.


Author(s):  
Tiwuk Sutanti

This research related to Implementation of instruction based students’ activities and Students’ learning Motivation toward students’ learning achievementt of Ninth Grade Students State Junior High School 3 Pamekasan regency . The students’ learning achievementt is influenced by Implementation of instruction based students’ activities. Additionally it is influenced by Students’ learning Motivation. Good and regularly Implementation of instruction based students’ activities brings a positive effect on the students’ learning achievement and a high learning motivation in teaching will increase the students achievement.            The purpose of this research is (1) to describe  Implementation of instruction based students’ activities toward students’ learning achievement. (2) to describe the significant influence of the Students’ learning Motivation toward students’ learning achievement . (3) to describe the significant influence of Implementation of instruction based students’ activities and Students’ learning Motivation simultaniously toward students’ learning achievement.            The design of this research is descriptive quantitative. The subject of the research is Ninth Grade Students of State Junior High School 3 Pamekasan. The data collecting technique is by giving some questionnaires. Data analyzing technique used patial and multi-regression computerized SPSS 17.00 program for windows. The Result and the discussion as follows:  a) There is a significant influence on the Implementation of instruction based students’ activities  (X1) toward students’ learning achievement is about 0,312. b) There is a significant influence on the Students’ learning Motivation (X2) toward students’ learning achievement is about 0,062 by the significanct level 0,000, on t-account, that means smaller than 0,05. It can be concluded that X1 and X2 are very significant. c) There is a significant influence on the Implementation of instruction based students’ activities and Students’ learning Motivation simultaneously toward students’ learning achievement is about 17,617 by the significanct level 0,000, on F-account, that means smaller than 0,05. It can be concluded that X1 and X2 are very significant toward Y.


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