_:n3d7903834d0b4fe48039f304107fb452xb0
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"<h4><span style=\"color: #808080;\"><strong> EXPERIMENTS</strong></span></h4>\r\n<h3>Coating Metals With Zinc and Method for Measuring the Thickness of the Layer</h3>\r\n<strong>Miroslav Minchev</strong>\r\n<em>Geo Milev School of Mathematics and Natural Science – Stara Zagora (Bulgaria)</em>\r\n\r\n<a href=\"https://doi.org/10.53656/nat2021-5.01\">https://doi.org/10.53656/nat2021-5.01</a>\r\n\r\n<strong>Abstract.</strong> When a copper coin is immersed with zinc into a solution of a zinc salt (, etc.) an electrochemical reaction occurs in the mixture. As a result, a thin layer of zinc appears on the surface of the copper which gives the impression for silver color...\r\n\r\n<a class=\"btn btn-default\" href=\"https://azbuki.bg/uncategorized/coating-metals-with-zinc-and-method-for-measuring-the-thickness-of-the-layer/\" target=\"_blank\" rel=\"noopener noreferrer\">ВИЖ ПОВЕЧЕ</a>\r\n\r\n&nbsp;\r\n\r\n<hr />\r\n\r\n<h4><span style=\"color: #808080;\"><strong>FROM THE RESEARCH LABORATORIES</strong></span></h4>\r\n<h3>Potential Applications оf Antibacterial Compounds in Edible Coating as Fish Preservative</h3>\r\n<strong>Maulidan Firdaus, Desy Nila Rahmana, Diah Fitri Carolina,</strong>\r\n<strong>Nisrina Rahma Firdausi, Zulfaa Afiifah,</strong>\r\n<strong>Berlian Ayu Rismawati Sugiarto</strong>\r\n<em>Sebelas Maret University – Surakarta (Indonesia)</em>\r\n\r\n<a href=\"https://doi.org/10.53656/nat2021-5.02\" target=\"_blank\" rel=\"noopener noreferrer\">https://doi.org/10.53656/nat2021-5.02</a>\r\n\r\n<strong>Abstract.</strong> Fish is a product that breaks down quickly due to biochemical reactions that cause a decrease in the quality of its nutritional and sensory values. Natural preservatives make fish safer for consumption than fish preserved with formalin...\r\n\r\n<a class=\"btn btn-default\" href=\"https://azbuki.bg/uncategorized/potential-applications-of-antibacterial-compounds-in-edible-coating-as-fish-preservative/\" target=\"_blank\" rel=\"noopener noreferrer\">ВИЖ ПОВЕЧЕ</a>\r\n<h4></h4>\r\n\r\n<hr />\r\n\r\n<h4><span style=\"color: #808080;\"><strong>CURRICULUM MATTERS</strong></span></h4>\r\n<h3>Molecular Model аnd its Simplification in Teaching Stereoisomerism at Undergraduate Level</h3>\r\n<strong>Girija Shankar Singh</strong>\r\n<em>University of Botswana – Gaborone (Botswana)</em>\r\n\r\n<a href=\"https://doi.org/10.53656/nat2021-5.03\" target=\"_blank\" rel=\"noopener noreferrer\">https://doi.org/10.53656/nat2021-5.03</a>\r\n\r\n<strong>Abstract.</strong> The role of molecular models in teaching chemistry is well-known. It is widely used in explaining the shape of molecules. Several authors have reported the difficulty in teaching stereochemistry/chirality...\r\n\r\n<a class=\"btn btn-default\" href=\"https://azbuki.bg/uncategorized/molecular-model-and-its-simplification-in-teaching-stereoisomerism-at-undergraduate-level/\" target=\"_blank\" rel=\"noopener noreferrer\">ВИЖ ПОВЕЧЕ</a>\r\n\r\n&nbsp;\r\n\r\n<hr />\r\n\r\n<h4><span style=\"color: #808080;\"><strong>NEW APPROACHES</strong></span></h4>\r\n<h3>Метеори. Oсновни понятия и терминология</h3>\r\n<strong>Валентин Велков</strong>\r\n<em>Астрономически клуб „Канопус“ – Варна</em>\r\n\r\n<a href=\"https://doi.org/10.53656/nat2021-5.04\" target=\"_blank\" rel=\"noopener noreferrer\">https://doi.org/10.53656/nat2021-5.04</a>\r\n\r\n<strong>Резюме.</strong> В настоящата статия са разгледани някои основни понятия, свързани с метеорната астрономия, както и употребата на правилната терминология при работа на български език...\r\n\r\n<a class=\"btn btn-default\" href=\"https://azbuki.bg/uncategorized/meteori-osnovni-ponyatiya-i-terminologiya/\" target=\"_blank\" rel=\"noopener noreferrer\">ВИЖ ПОВЕЧЕ</a>\r\n\r\n&nbsp;\r\n<h4></h4>\r\n&nbsp;\r\n<h3>От образуването на земята до установяването на лука</h3>\r\n<strong>Доц. д.п.н. Здравка Костова</strong>\r\n<em>Софийски университет „Св. Климент Охридски“</em>\r\n\r\n<a href=\"https://doi.org/10.53656/nat2021-5.05\" target=\"_blank\" rel=\"noopener noreferrer\">https://doi.org/10.53656/nat2021-5.05</a>\r\n\r\n<strong>Резюме.</strong> Обсъждат се последователните етапи в еволюцията на живота до утвърждаването на прокариотната клетка, поставяйки акцент на преходите от предбиотична среда към органични предшественици, пре-РНК-РНК, РНП-протеини-ДНК, ДНК-ЛУКА...\r\n\r\n<a class=\"btn btn-default\" href=\"https://azbuki.bg/uncategorized/ot-obrazuvaneto-na-zemyata-do-ustanovyavaneto-na-luka/\" target=\"_blank\" rel=\"noopener noreferrer\">ВИЖ ПОВЕЧЕ</a>\r\n\r\n&nbsp;\r\n\r\n<hr />\r\n\r\n<h4><span style=\"color: #808080;\"><strong>HISTORY &amp; PHILOSOPHY OF SCIENCE</strong></span></h4>\r\n<h3>1300 Години от рождението на гебер – ученият начало и фундамент на арабската алхимия</h3>\r\n<strong>Нано Рангелов Степанов</strong>\r\n\r\n<a href=\"https://doi.org/10.53656/nat2021-5.06\" target=\"_blank\" rel=\"noopener noreferrer\">https://doi.org/10.53656/nat2021-5.06</a>\r\n\r\n<strong>Резюме.</strong> Гебер (латинизираното име на ДЖАБИР ИБН ХАЙЯН (ок. 721 – ок. 815)) e сред най-бележитите представители на химията през Средновековието...\r\n\r\n<a class=\"btn btn-default\" href=\"https://azbuki.bg/uncategorized/1300-godini-ot-rozhdenieto-na-geber-ucheniyat-nachalo-i-fundament-na-arabskata-alhimiya/\" target=\"_blank\" rel=\"noopener noreferrer\">ВИЖ ПОВЕЧЕ</a>"
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