{"id":70632,"date":"2021-04-29T12:23:14","date_gmt":"2021-04-29T09:23:14","guid":{"rendered":"https:\/\/azbuki.bg\/?p=70632"},"modified":"2025-09-10T09:54:30","modified_gmt":"2025-09-10T06:54:30","slug":"sp-obuchenie-po-prirodni-nauki-i-varhovi-tehnologii-knizhka-2-2021-godina-xxx","status":"publish","type":"post","link":"https:\/\/bel.azbuki.bg\/en\/chemistry\/sadarzhanie-na-sp-obuchenie-po-prirodni-nauki-i-varhovi-tehnologii-2021\/sp-obuchenie-po-prirodni-nauki-i-varhovi-tehnologii-knizhka-2-2021-godina-xxx\/","title":{"rendered":"Natural Science and Advanced Technology Education, 2\/2021, vol. 30"},"content":{"rendered":"<h4><span style=\"color: #808080;\"><strong>FROM THE RESEARCH LABORATORIES<\/strong><\/span><\/h4>\n<h3>Investigation of 238U, 234U And 210Po Content in Selected Bulgarian Drinking Water<\/h3>\n<p><strong>1)Bozhidar Slavchev, 1)Elena Geleva, 2)Blagorodka Veleva,<\/strong><br \/>\n<strong>1)Hristo Protohristov, 1)Lyuben Dobrev,<\/strong><br \/>\n<strong>1)Desislava Dimitrova, 1)Vladimir Bashev, 1)Dimitar Tonev<\/strong><br \/>\n<em>1)Institute for Nuclear Research and Nuclear Energy \u2013 BAS (Bulgaria)<\/em><br \/>\n<em>2)National Institute of Meteorology and Hydrology (Bulgaria)<\/em><\/p>\n<p><a href=\"https:\/\/doi.org\/10.53656\/nat2021-2.01\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/doi.org\/10.53656\/nat2021-2.01<\/a><\/p>\n<p><strong>Abstract.<\/strong> The radioactivity of selected sources of drinking water in Southern Bulgaria was investigated using 238U, 234U and 210Po activity measurements and dose calculation, respectively. The activities of 238U, 234U and 210Po varied from 226 to 826 mBq\/L, 274 to 1623 mBq\/L and &lt; 0.6 to 25.5 mBq\/L, respectively, being lower then derived concentrations for radioactivity in water intended for human consumption of the considered radionuclides, given in EC Directive 2013\/51\/EURATOM&#8230;<\/p>\n<h4><a class=\"btn btn-default\" href=\"https:\/\/bel.azbuki.bg\/en\/uncategorized\/investigation-of-238u-234u-and-210po-content-in-selected-bulgarian-drinking-water\/\" target=\"_blank\" rel=\"noopener noreferrer\">SEE MORE<\/a><\/h4>\n<p>&nbsp;<\/p>\n<hr \/>\n<h4><span style=\"color: #808080;\"><strong>TEACHING EFFICIENCY<\/strong><\/span><\/h4>\n<h3>The Reflective Skill \u2013 Constructive-Prognostic Analysis In Methodological Context<\/h3>\n<p><strong>Natasha Tzanova,  Nadezhda Raycheva, Isa Hadjiali<\/strong><br \/>\n<em>Sofia University<\/em><\/p>\n<p><a href=\"https:\/\/doi.org\/10.53656\/nat2021-2.02\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/doi.org\/10.53656\/nat2021-2.02<\/a><\/p>\n<p><strong>Abstract.<\/strong> In historical aspect, the skill is among the key categories in the realm of human practice, which are often an object of different researches \u2013 psychological, pedagogical, and last but not least methodological...<\/p>\n<h4><a class=\"btn btn-default\" href=\"https:\/\/bel.azbuki.bg\/en\/uncategorized\/refleksivnoto-umenie-konstruktivno-prognostichen-analiz-v-metodicheski-kontekst\/\">SEE MORE<\/a><\/h4>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h4><\/h4>\n<h3>Methodological Framework To Develop Meaning Formation Categories In Methodology Of Biology Education<\/h3>\n<p><strong>Nadezhda Raycheva<\/strong><br \/>\n<em>Sofia University<\/em><\/p>\n<p><a href=\"https:\/\/doi.org\/10.53656\/nat2021-2.03\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/doi.org\/10.53656\/nat2021-2.03<\/a><\/p>\n<p><strong>Abstract.<\/strong> Science could be thought as mature in cases it obtains clear terminology and methodology i.e. recognizable scientific language and object to be researched...<\/p>\n<h4><a class=\"btn btn-default\" href=\"https:\/\/bel.azbuki.bg\/en\/uncategorized\/metodologichna-ramka-za-izvezhdane-na-smisloobrazuvashhi-kategorii-v-metodikata-na-obuchenie-po-biologiya\/\" target=\"_blank\" rel=\"noopener noreferrer\">SEE MORE<\/a><\/h4>\n<p>&nbsp;<\/p>\n<hr \/>\n<h4><span style=\"color: #808080;\"><strong>EDUCATION: THEORY AND PRACTICE<\/strong><\/span><\/h4>\n<h3>First Steps In Quantum Physics:\nBasics \u2013 2. Model Examples (Square Wells)<\/h3>\n<p><strong>Mihail Avramov, Dimitar Marvakov<\/strong><br \/>\n<em>Sofia University<\/em><\/p>\n<p><a href=\"https:\/\/doi.org\/10.53656\/nat2021-2.04\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/doi.org\/10.53656\/nat2021-2.04<\/a><\/p>\n<p><strong>Abstract.<\/strong> Cases of a particle in a one-dimensional square well \u2013 infinitely deep and with finite depth \u2013 are also analyzed in detail.<\/p>\n<h4><a class=\"btn btn-default\" href=\"https:\/\/bel.azbuki.bg\/en\/uncategorized\/parvi-stapki-v-kvantovata-fizika-elementarno-izlozhenie-ii-modelni-primeri-potenczialni-yami\/\">SEE MORE<\/a><\/h4>\n<p>&nbsp;<\/p>\n<hr \/>\n<h4><span style=\"color: #808080;\"><strong>CURRICULUM MATTERS<\/strong><\/span><\/h4>\n<h3>Functional Analisis Of Desing Of Pedagogical Decision As Profesional Skill<\/h3>\n<p><strong>Nadezhda Raycheva<\/strong><br \/>\n<em>Sofia University<\/em><\/p>\n<p><a href=\"https:\/\/doi.org\/10.53656\/nat2021-2.05\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/doi.org\/10.53656\/nat2021-2.05<\/a><\/p>\n<p><strong>Abstract<\/strong>A part of a professional teacher\u2019s competency is making the pedagogical design in the territory of the defined situation and includes numerous skills that function as a whole and are visible in final result related to evaluation and choice of educational resources or develop ideas for parts or for the whole process of education in a defined pedagogical context...<\/p>\n<h4><a class=\"btn btn-default\" href=\"https:\/\/bel.azbuki.bg\/en\/uncategorized\/funkczionalen-analiz-na-umenieto-za-konstruirane-na-pedagogichesko-reshenie\/\" target=\"_blank\" rel=\"noopener noreferrer\">SEE MORE<\/a><\/h4>\n<p>&nbsp;<\/p>\n<hr \/>\n<h4><span style=\"color: #808080;\"><strong>NEW APPROACHES<\/strong><\/span><\/h4>\n<h3>A Study On Reflection With 15 \u2013 17 Year Olds \nIn School Biology Education In An Intellectual And Personality Aspect<\/h3>\n<p><strong>Isa Hadjiali<\/strong><br \/>\n<em>Sofia University<\/em><\/p>\n<p><a href=\"https:\/\/doi.org\/10.53656\/nat2021-2.06\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/doi.org\/10.53656\/nat2021-2.06<\/a><\/p>\n<p><strong>Abstract.<\/strong> The report highlights into an empirical study of the intellectual and personality reflection correlations with 15 to 17- year old students in school biology education.<\/p>\n<p><a class=\"btn btn-default\" href=\"https:\/\/bel.azbuki.bg\/en\/uncategorized\/izsledvane-na-refleksivnoto-mislene-pri-15-17-godishni-ucheniczi-v-obuchenieto-po-biologiya-v-intelektualen-i-lichnosten-aspekt\/\" target=\"_blank\" rel=\"noopener noreferrer\">SEE MORE<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>FROM THE RESEARCH LABORATORIES Investigation of 238U, 234U And 210Po Content in Selected Bulgarian Drinking Water 1)Bozhidar Slavchev, 1)Elena Geleva, 2)Blagorodka Veleva, 1)Hristo Protohristov, 1)Lyuben Dobrev, 1)Desislava Dimitrova, 1)Vladimir Bashev, 1)Dimitar Tonev 1)Institute for Nuclear Research and Nuclear Energy \u2013 BAS (Bulgaria) 2)National Institute of Meteorology and Hydrology (Bulgaria) https:\/\/doi.org\/10.53656\/nat2021-2.01 Abstract. The radioactivity of selected [&hellip;]<\/p>","protected":false},"author":124332423427287,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jnews-multi-image_gallery":[],"jnews_single_post":{"subtitle":"","format":"standard","video":"","gallery":"","source_name":"","source_url":"","via_name":"","via_url":"","override_template":"0","override":[{"single_blog_custom":"","parallax":"0","fullscreen":"0","sidebar":"","second_sidebar":"","sticky_sidebar":"0","share_position":"","share_float_style":"","show_share_counter":"0","show_view_counter":"0","show_featured":"0","show_post_meta":"0","show_post_author":"0","show_post_author_image":"0","show_post_date":"0","post_date_format":"","post_date_format_custom":"","show_post_category":"0","show_post_reading_time":"0","post_reading_time_wpm":"","show_post_tag":"0","show_prev_next_post":"0","show_popup_post":"0","number_popup_post":"1","show_author_box":"0","show_post_related":"0","show_inline_post_related":"0"}],"override_image_size":"0","image_override":[{"single_post_thumbnail_size":"","single_post_gallery_size":""}],"trending_post":"0","trending_post_position":"","trending_post_label":""},"jnews_primary_category":{"id":""}},"categories":[4119],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u0421\u043f. \u201e\u041e\u0431\u0443\u0447\u0435\u043d\u0438\u0435 \u043f\u043e \u043f\u0440\u0438\u0440\u043e\u0434\u043d\u0438 \u043d\u0430\u0443\u043a\u0438 \u0438 \u0432\u044a\u0440\u0445\u043e\u0432\u0438 \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0438\u201c, \u043a\u043d\u0438\u0436\u043a\u0430 2\/2021, \u0433\u043e\u0434\u0438\u043d\u0430 XXX - \u0410\u0437-\u0431\u0443\u043a\u0438<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/foreignlanguages.azbuki.bg\/en\/chemistry\/sadarzhanie-na-sp-obuchenie-po-prirodni-nauki-i-varhovi-tehnologii-2021\/sp-obuchenie-po-prirodni-nauki-i-varhovi-tehnologii-knizhka-2-2021-godina-xxx\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u0421\u043f. \u201e\u041e\u0431\u0443\u0447\u0435\u043d\u0438\u0435 \u043f\u043e \u043f\u0440\u0438\u0440\u043e\u0434\u043d\u0438 \u043d\u0430\u0443\u043a\u0438 \u0438 \u0432\u044a\u0440\u0445\u043e\u0432\u0438 \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0438\u201c, \u043a\u043d\u0438\u0436\u043a\u0430 2\/2021, \u0433\u043e\u0434\u0438\u043d\u0430 XXX - \u0410\u0437-\u0431\u0443\u043a\u0438\" \/>\n<meta property=\"og:description\" content=\"FROM THE RESEARCH LABORATORIES Investigation of 238U, 234U And 210Po Content in Selected Bulgarian Drinking Water 1)Bozhidar Slavchev, 1)Elena Geleva, 2)Blagorodka Veleva, 1)Hristo Protohristov, 1)Lyuben Dobrev, 1)Desislava Dimitrova, 1)Vladimir Bashev, 1)Dimitar Tonev 1)Institute for Nuclear Research and Nuclear Energy \u2013 BAS (Bulgaria) 2)National Institute of Meteorology and Hydrology (Bulgaria) https:\/\/doi.org\/10.53656\/nat2021-2.01 Abstract. 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