scholarly journals RADON SURVEY IN THE BUILDINGS OF PRE-UNIVERSITY EDUCATION IN MONTENEGRO

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Ranko Zekić ◽  
Perko Vukotić ◽  
Tomislav Andjelić ◽  
Nikola Svrkota
Keyword(s):  
Special Needs ◽  
University Education ◽  
Mean Values ◽  
Radon Activity ◽  
Activity Concentrations ◽  
Educational Buildings ◽  
Academic Year ◽  
Harmful Effects ◽  
Radon Survey ◽  
Radon Concentrations

During the academic year 2016/17 (September − June), radon was surveyed in all 519 buildings of the pre-university education in Montenegro – primary, high and vocational schools, kindergartens, institutes for children with special needs and student dormitories. Radon detectors (Radosys,RSFV type) were placed in all classrooms, rooms occupied by children and offices on ground floor, and in some rooms on the upper floors. The total number of detectors was 4078, of which 285 were duplicate (control) detectors. During the radon survey, 11.4% of the detectors were lost or damaged. Average 9-month radon activity concentrations were obtained for 3345 rooms in 507 buildings. Mean values of radon concentrations in the rooms were AM = 243 Bq/m3 and GM = 142 Bq/m3, while the corresponding values for Montenegrin dwellings, found in the national radon survey, were more than twice lower. Radon concentrations above 300 Bq/m3 were found in 23.3% of all surveyed rooms and in 3.4% of the rooms they were above 1000 Bq/m3. Radon activity concentrations above 300 Bq/m3 were measured in some rooms in 44% of the buildings, and those above 1000 Bq/m3 in 9.5% of the buildings. Radon levels in educational buildings are significantly higher than in Montenegrin homes, which means that children and educators are more exposed to the harmful effects of radon in schools and kindergartens than at homes (for equal durations of stay in them). This could be resulting from the type of construction of educational buildings, which are usually large low-rise structures, and from a relatively high average age of these buildings.

scholarly journals Radon concentrations in multi-story buildings in Montenegro

2019 ◽  
Vol 34 (2) ◽  
pp. 165-174
Author(s):  
Perko Vukotic ◽  
Ranko Zekic ◽  
Nevenka Antovic ◽  
Tomislav Andjelic
Keyword(s):  
Radon Concentration ◽  
Building Materials ◽  
Indoor Radon ◽  
Small Contribution ◽  
Indoor Radon Concentration ◽  
Climate Conditions ◽  
Floor Level ◽  
Radon Activity ◽  
Activity Concentrations ◽  
Radon Concentrations

Change of radon concentrations in dwellings with floor level was studied in six multi-story buildings, in four towns of Montenegro with different climate conditions. The annual aver- age radon activity concentrations in 35 dwellings are found to be very low, mostly at a level of 20-30 Bqm?3. Absorbed gamma dose rates in these dwellings are in the range of 14-58 nGyh?1. The low radon concentrations are a consequence of a good tightness of the structures in contact with the ground and a small contribution of building materials to radon indoors. A clear general trend of changes in radon concentrations with floor level is not observed. In most of the dwellings on different floors in the multi-story building radon concentration varies very little, mostly within measurement error. A small decrease in radon concentration is noted between the two or three floors closest to the ground, but only in some of the buildings. Therefore, a decrease of indoor radon concentration with floor level cannot be considered as a general characteristic of multi-story buildings. Although the seasonal radon variations have not been in the focus of this study, it was found that the average radon activity concentrations in dwellings of the multi-story buildings are higher in warmer than in cooler half-year period, what is contrary to the general rule for homes in the world and in Montenegro as well.

Pollutants in Organic Chemistry and Medicinal Chemistry Education Laboratory. Experimental and Machine Learning Studies

2020 ◽  
Vol 20 (9) ◽  
pp. 720-730
Author(s):  
Iker Montes-Bageneta ◽  
Urtzi Akesolo ◽  
Sara López ◽  
Maria Merino ◽  
Eneritz Anakabe ◽  
...  
Keyword(s):  
Organic Chemistry ◽  
Machine Learning ◽  
Chemistry Education ◽  
Organic Waste ◽  
Computational Modelling ◽  
University Education ◽  
Academic Factors ◽  
Academic Year ◽  
Statistical Analysis Software

Aims: Computational modelling may help us to detect the more important factors governing this process in order to optimize it. Background: The generation of hazardous organic waste in teaching and research laboratories poses a big problem that universities have to manage. Methods: In this work, we report on the experimental measurement of waste generation on the chemical education laboratories within our department. We measured the waste generated in the teaching laboratories of the Organic Chemistry Department II (UPV/EHU), in the second semester of the 2017/2018 academic year. Likewise, to know the anthropogenic and social factors related to the generation of waste, a questionnaire has been utilized. We focused on all students of Experimentation in Organic Chemistry (EOC) and Organic Chemistry II (OC2) subjects. It helped us to know their prior knowledge about waste, awareness of the problem of separate organic waste and the correct use of the containers. These results, together with the volumetric data, have been analyzed with statistical analysis software. We obtained two Perturbation-Theory Machine Learning (PTML) models including chemical, operational, and academic factors. The dataset analyzed included 6050 cases of laboratory practices vs. practices of reference. Results: These models predict the values of acetone waste with R2 = 0.88 and non-halogenated waste with R2 = 0.91. Conclusion: This work opens a new gate to the implementation of more sustainable techniques and a circular economy with the aim of improving the quality of university education processes.

scholarly journals Autoeficácia em Professores do Ensino Superior

2019 ◽  
Vol 20 (3) ◽  
pp. 319
Author(s):  
José Ricardo Claudino Ribeiro ◽  
Camila Cristina Fonseca Bicalho ◽  
Marcos Teixeira de Abreu Soares Onofre ◽  
Franco Noce
Keyword(s):  
Biological Sciences ◽  
Higher Education ◽  
Self Efficacy ◽  
Minas Gerais ◽  
The Self ◽  
University Education ◽  
Future Research ◽  
Mean Values ◽  
Private Network ◽  
Social Persuasion

O objetivo deste estudo foi avaliar a percepção de autoeficácia em professores do Ensino Superior e avaliar as propriedades psicométricas da Escala de Autoeficácia para Professores do Ensino Superior para o contexto brasileiro. Participaram deste estudo 188 professores do Ensino Superior de instituições da rede privada de Minas Gerais. Os professores lecionavam nas áreas da Educação Física, Nutrição, Ciências Biológicas, Geografia, Fisioterapia, Medicina, Análise de Sistemas, Enfermagem, Turismo e Pedagogia. A amostra foi composta por 61,5% de professores do sexo masculino. Em relação à formação, foi predominante a participação de professores com especialização Lato Sensu (52,9%). Todos os professores responderam a Escala de Autoeficácia para Docentes do Ensino Superior-EADES. Os resultados mostraram que a escala está adequada para a avaliação da autoeficácia em professores (α=0,92). Em relação ao quanto os professores se sentem capazes de realizar suas tarefas docentes, foram verificados valores médios entre 5,01 e 5,65, o que representa um alto valor de percepção de autoeficácia pelos professores. Conclui-se que os principais fatores responsáveis pela autoeficácia dos professores são a Satisfação, a Persuasão Social e as Experiências Pregressas. Estes aspectos fornecem uma importante sugestão sobre as possibilidades de exploração destes fatores no que diz respeito às futuras aquisições, programas de formação e pesquisas futuras. Palavras-chave: Validação. Eficácia Docente. Educação Superior. AbstractThe aim of this study was to evaluate the perception of self-efficacy in higher education teachers and to evaluate the psychometric properties of the Self-efficacy Scale for higher education teachers in the Brazilian context. A total of 188 higher education teachers from institutions of the private network of Minas Gerais participated in this study. Teachers taught in the areas of Physical Education, Nutrition, Biological Sciences, Geography, Physiotherapy, Medicine, Systems Analysis, Nursing, Tourism and Pedagogy. The sample consisted of 61.5% male teachers. All teachers answered the Self-Efficacy Scale for Teachers of Higher Education-EADES. Lato Sensu teachers (52.9%), followed by master teachers (34.8%), doctors (9.6%) and graduates (2.7%) predominated. The results showed that the scale is adequate for the evaluation of self-efficacy in teachers (α=0.92). In relation to how much teachers feel capable of performing their teaching tasks, mean values between 5.01 and 5.65 were verified, which represents a high value of self-efficacy perception among teachers. It is concluded that the main factors responsible for teachers' self-efficacy are satisfaction, social persuasion and previous experiences. These aspects provide an important suggestion about the possibilities of exploring these factors with regard to future acquisitions, training programs and future research. Keywords: Validation. Professor Efficacy. University Education. 

scholarly journals Access to University Studies: Implementing and Evaluating Multi-point Videoconferencing

2013 ◽  
Vol 23 (1) ◽  
Author(s):  
David A. Keast
Keyword(s):  
Formative Evaluation ◽  
Mode Of Delivery ◽  
University Education ◽  
Geographic Barrier ◽  
University Of Alberta ◽  
Primary Mode ◽  
Aboriginal Students ◽  
University Studies ◽  
The University ◽  
Academic Year

A formidable geographic barrier exists in Canada for institutions wishing to provide opportunities for university education but serving clients and communities in remote regions of a province. In early September l995, the University of Alberta, Fairview College, and Kayas Cultural College embarked on a new partnership in offering a selected number of introductory Faculty of Arts courses in remote regions of northwestern Alberta. The primary mode of delivery was synchronized, multi-point videoconferencing (to as many as six sites), with all courses delivered from the University of Alberta campus. Slightly more than 70 percent of the student cohort for the first academic year were Aboriginal students. This paper provides a contextual background, describes the implementation, and reports the findings from a detailed formative evaluation of this partnership. The focus is primarily administrative in that questions addressed will relate to how such programs can be planned, implemented, managed, and monitored.

scholarly journals Comparative Study of Natural Radioactivity and Radiological Hazard Parameters of Various Imported Tiles Used for Decoration in Sudan

Symmetry ◽  
2018 ◽  
Vol 10 (12) ◽  
pp. 746 ◽  
Author(s):  
Saifeldin Siddeeg ◽  
Mohamed Suliman ◽  
Faouzi Ben Rebah ◽  
Wissem Mnif ◽  
Amel Ahmed ◽  
...  
Keyword(s):  
Natural Radioactivity ◽  
Hazard Index ◽  
Absorbed Dose ◽  
Ceramic Materials ◽  
Radiological Hazard ◽  
Absorbed Dose Rate ◽  
Mean Values ◽  
Activity Concentrations ◽  
Materials Used ◽  
Hazard Parameters

Various commercially imported ceramic materials used in the building of Sudanese dwellings were examined in order to determine their natural radioactivity and radiological hazard parameters. In this context, twenty-five different consignments were sampled and analyzed using (3″ × 3″) sodium iodide gamma spectrometry system NaI(Tl). The identified average activity concentrations of 238U, 232Th, and 40K were 183 ± 70, 51 ± 44, and 238 ± 77 Bq/kg dry-weights, respectively. A positive correlation between 238U and 232Th in the investigated samples was identified from the observed significant correlation (R2 = 0.8). Interestingly, a low Th/U ratio (~0.3) was recorded, which could be related to the systematic loss of thorium during the fabrication process. The measured activity concentrations for these radionuclides were comparable with the reported data obtained from similar materials used in other countries showing similarity in ceramic materials used in buildings. Five different radiation indices, such as the average radium equivalent (Raeq), the absorbed dose rate (D), the annual effective dose equivalent (AEDE), the external hazard index (Hex), and the radioactivity level index (lγ), which indicate hazardous radiation, were estimated from these measurements. The obtained results revealed average values of 274 ± 106 Bq/kg, 125 ± 48 nGy/h, 1.23 ± 0.48 mSv/y, 0.74 ± 0.29, and 0.94 ± 0.37, for Raeq, D, AEDE, Hex, and lγ, respectively. The mean values of Raeq and Hex were in good agreement with the international limits, while the means of D and lγ were higher than the universal values. Calculated AEDE in about 60% of the samples exceeded the universal limit of 1 mSv/y for the public exposure (maximum value of 2.16 mSv/y). The investigated parameters were in the same range for the majority of imported samples; however, they were slightly higher than the locally produced ceramic, highlighting the importance of monitoring imported materials for their radioactivity contents.

scholarly journals A comparison of the dose from natural radionuclides and artificial radionuclides after the Fukushima nuclear accident

2016 ◽  
Vol 57 (4) ◽  
pp. 422-430 ◽  
Author(s):  
Masahiro Hosoda ◽  
Shinji Tokonami ◽  
Yasutaka Omori ◽  
Tetsuo Ishikawa ◽  
Kazuki Iwaoka
Keyword(s):  
Effective Dose ◽  
Indoor Radon ◽  
Natural Radionuclides ◽  
Temporary Housing ◽  
Radon Activity ◽  
Artificial Radionuclides ◽  
Activity Concentrations ◽  
Fdnpp Accident ◽  
Effective Doses ◽  
Average Effective Dose

Abstract Due to the Fukushima Daiichi Nuclear Power Plant (FDNPP) accident, the evacuees from Namie Town still cannot reside in the town, and some continue to live in temporary housing units. In this study, the radon activity concentrations were measured at temporary housing facilities, apartments and detached houses in Fukushima Prefecture in order to estimate the annual internal exposure dose of residents. A passive radon–thoron monitor (using a CR-39) and a pulse-type ionization chamber were used to evaluate the radon activity concentration. The average radon activity concentrations at temporary housing units, including a medical clinic, apartments and detached houses, were 5, 7 and 9 Bq m −3 , respectively. Assuming the residents lived in these facilities for one year, the average annual effective doses due to indoor radon in each housing type were evaluated as 0.18, 0.22 and 0.29 mSv, respectively. The average effective doses to all residents in Fukushima Prefecture due to natural and artificial sources were estimated using the results of the indoor radon measurements and published data. The average effective dose due to natural sources for the evacuees from Namie Town was estimated to be 1.9 mSv. In comparison, for the first year after the FDNPP accident, the average effective dose for the evacuees due to artificial sources from the accident was 5.0 mSv. Although residents' internal and external exposures due to natural radionuclides cannot be avoided, it might be possible to lower external exposure due to the artificial radionuclides by changing some behaviors of residents.

scholarly journals Lung Cancer Mortality and Radon Concentration in a Chronically Exposed Neighborhood in Chihuahua, Mexico: A Geospatial Analysis

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Octavio R. Hinojosa de la Garza ◽  
Luz H. Sanín ◽  
María Elena Montero Cabrera ◽  
Korina Ivette Serrano Ramirez ◽  
Enrique Martínez Meyer ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Spatial Clustering ◽  
Indoor Radon ◽  
Correlation Coefficients ◽  
Lung Cancer Mortality ◽  
Mean Values ◽  
Distance Weighting ◽  
The Mean ◽  
Inverse Distance ◽  
Radon Concentrations

This study correlated lung cancer (LC) mortality with statistical data obtained from government public databases. In order to asses a relationship between LC deaths and radon accumulation in dwellings, indoor radon concentrations were measured with passive detectors randomly distributed in Chihuahua City. Kriging (K) and Inverse-Distance Weighting (IDW) spatial interpolations were carried out. Deaths were georeferenced and Moran’sIcorrelation coefficients were calculated. The mean values (overn=171) of the interpolation of radon concentrations of deceased’s dwellings were 247.8 and 217.1 Bq/m3, for K and IDW, respectively. Through the Moran’sIvalues obtained, correspondingly equal to 0.56 and 0.61, it was evident that LC mortality was directly associated with locations with high levels of radon, considering a stable population for more than 25 years, suggesting spatial clustering of LC deaths due to indoor radon concentrations.

scholarly journals Combating the Stress of an Urgent Move to Remote Learning Caused by the COVID Pandemic

2020 ◽  
Vol 2 (3) ◽  
Author(s):  
Alina M. Zapalska ◽  
Christopher LaMonica ◽  
Stephen Hart
Keyword(s):  
Online Education ◽  
Teaching Effectiveness ◽  
University Education ◽  
Learning Mechanisms ◽  
On Line ◽  
Undergraduate Economics ◽  
Economics Courses ◽  
First Time ◽  
Academic Year ◽  
Remote Learning

Remote learning became the primary venue for university education throughout the world during the COVID-19 pandemic. While some academic institutions already had remote learning mechanisms in place by design, many higher education institutions – along with faculty and students – had to adapt to virtual or online education for the first time, while school was in session, in spring 2020. The continued effort to improve on-line pedagogy during the 2020-21 academic year suggests new pedagogical norms are now being established, with longer term implications for educators and students alike. In this paper, the authors explore different technologies used in the “classroom” and observed impacts on teaching effectiveness, particularly as they relate to an undergraduate economics course. The authors find that while it is challenging to replicate the in-person class experience, basic economics courses can be effectively taught in a remove environment by leveraging technology.

scholarly journals Indoor radon monitoring in selected fault zones, Slovakia – preliminary results from the summer monitoring period

2019 ◽  
Vol 49 (4) ◽  
pp. 391-402
Author(s):  
Iveta Smetanová ◽  
Andrej Mojzeš ◽  
František Marko ◽  
Kamil Fekete ◽  
Kristián Csicsay
Keyword(s):  
Direct Contact ◽  
Activity Concentration ◽  
Structural Parameters ◽  
Indoor Radon ◽  
Fault Zones ◽  
Multidisciplinary Research ◽  
Monitoring Period ◽  
Radon Activity ◽  
Radon Survey ◽  
Radon Monitoring

Abstract Indoor radon survey in Sološnica, Vydrník and Zázrivá villages has been performed within the framework of the project “Multidisciplinary research of geophysical and structural parameters, and environmental impacts of faults of the Western Carpathians”. Integration measurement of 222Rn activity concentration has been carried out using RamaRn detectors in houses, offices, schools and kindergartens. Indoor radon activity in the summer monitoring period (June–August 2018) varied from values under the detection limit of 55 Bq/m3 to 480 Bq/m3. In 94% of rooms the radon activity below 200 Bq/m3 was found. The results have been examined in respect of the most used building material and presence or absence of a cellar underneath the room. Indoor radon higher than 300 Bq/m3 was measured only in rooms in direct contact with the subsoil.

scholarly journals PERBANDINGAN KADAR TRIGLISERIDA PADA OBES 1 DAN OBES 2

2013 ◽  
Vol 1 (1) ◽  
Author(s):  
Inri A. H. Oway ◽  
Sonny J. R. Kalangi ◽  
Taufik Pasiak
Keyword(s):  
Energy Source ◽  
Design Research ◽  
Observational Method ◽  
Cross Sectional ◽  
Mean Values ◽  
Test Of Hypothesis ◽  
The Mean ◽  
Cross Sectional Design ◽  
Academic Year ◽  
Health Objective

Abstract. Background. Triglycerides are a type of fat that can be found in blood which are stored the most in human body. Triglycerides are used as an energy source for various metabolic processes. High levels of triglycerides can lead to various health problems. Elevated triglycerides levels can be caused by various things, such as obesity. Obesity results when fat accumulates in body. Obesity and elevated triglycerides levels can affect human health. Objective. The aim for this research was to compare triglyceride levels of obese 1 and obese 2 students of Faculty of Medicine Sam Ratulangi University. Method. An observational method with cross sectional design research was done to compare triglyceride levels in obese 1 and obese 2 students of Faculty of Medicine Sam Ratulangi University  academic year 2010 and 2011. In the number of 49 people, (30 people were obese 1 and 19 people were obese 2). The data were analyzed using SPSS, test of hypothesis used Mann Whitney.  Result. The mean values of triglyceride levels in obese 1 students were 69,00 mg/dL and in obese 2 students were 85,53 mg/dL. Conclusion. There were significant differences on triglyceride levels in obese 1 and obese 2. Keyword: fat, obesity, triglyceride.   Abstrak. Latar Belakang. Trigliserida merupakan jenis lemak yang paling banyak pada tubuh manusia dan dapat ditemukan dalam darah. Trigliserida berguna sebagai sumber energi untuk berbagai proses metabolik tubuh. Akan tetapi jika kadar trigliserida terlalu tinggi maka dapat menimbulkan berbagai masalah kesehatan. Peningkatan kadar trigliserida dapat disebabkan oleh berbagai hal, salah satunya karena obesitas. Obesitas terjadi karena peningkatan akumulasi lemak dalam tubuh. Obesitas dan peningkatan kadar trigliserida dapat mempengaruhi tingkat kesehatan seseorang. Tujuan. Penelitian ini bertujuan untuk membandingkan kadar trigliserida pada mahasiswa obes 1 dan obes 2 Angkatan 2010 dan 2011 di Fakultas Kedokteran Universitas Sam Ratulangi. Metode. Penelitian ini dilakukan dengan metode observasional dan desain studi cross sectional untuk membandingkan kadar trigliserida pada mahasiswa obes 1 dan obes 2 Angkatan 2010 dan 2011 di Fakultas Kedokteran Universitas Sam Ratulangi. Jumlah sampel pada penelitian ini sebanyak 49 orang yang terdiri dari 30 orang obes 1 dan 19 orang obes 2. Analisis data dilakukan dengan menggunakan SPSS dan uji hipotesis menggunakan Uji Mann-Whitney. Hasil. Kadar trigliserida rata-rata pada obes 1 sebesar 69,00 mg/dL dan kadar trigliserida rata-rata pada obes 2 sebesar 85,53 mg/dL. Kesimpulan. Secara statistik terdapat perbedaan bermakna kadar trigliserida pada obes 1 dan obes 2. Kata Kunci: lemak, obesitas, trigliserida.

Sign in / Sign up

Export Citation Format

Share Document