Година XXX, Книжка 3, 2021<<Архив>>
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GENERATION OF NO\(_2\) BY LEAD NITRATE PYROLYSIS: NEVER DO MODIFICATIONS A PRIMA VISTA
Generation of nitrogen dioxide is a well-known demonstration/experiment, usually performed by pyrolysis of Pb(NO\(_3\))\(_2\). In order to prevent obstructing the glass tubes or the test-tube where NO\(_2\) is generated, one may safely use a homogenized mixtur...
nitrogen dioxide; pyrolysis; lead(II) nitrate; sodium chloride; metathesis reaction
COMPUTATIONAL ANALYSIS OF THE MESSENGER RNA VARIANTS ENCODING TWO ISOFORMS OF THE HIGH-MOBILITY GROUP BOX 1 PROTEIN
High-mobility group box 1 protein (HMGB1) is a multifunctional nonhistone chromosomal protein. This widespread nuclear protein has a dual function-in the nucleus - it binds DNA and participates in practically all DNA-dependent processes. On the other hand, the...
high-mobility group box 1 protein; HMGB1; splicing; translation; isoforms
PROBLEM OF THE 8-TH EXPERIMENTAL PHYSICS OLYMPIAD, SKOPJE, 8 MAY 2021 DETERMINATION OF PLANCK CONSTANT BY LED
This is the problem of the 8th International Experimental Physics Olympiad (EPO8). The task of the EPO8 is to determine Planck constant ħ = h/2p using the given set-up with LED. If you have an idea how to do it, do it and send us the result; skip the reading...
measurement of Planck constant; light emitting diode (LED); compact disk (CD) diffraction grating; Experimental Physics Olympiad (EPO); current-voltage characteristics I – V curves
PROFESSIONAL DISPOSITIONS OF GRADUATE PRE-SERVICE MATHEMATICS TEACHERS AMONG THREE COLLEGE OF TEACHER EDUCATION IN ETHIOPIA
The general objective of this study was to examine the professional disposition (attitude and self-efficacy) of pre-service teachers hold at the end of teacher education programs in terms of gender and modality. To do this, we used a quantitative research appr...
attitude; self-efficacy; mathematics; teaching mathematics
ОСНОВНИ ДИДАКТИЧЕСКИ АСПЕКТИ, СВЪРЗАНИ С ПРИЛАГАНЕ НА STEM ТЕХНОЛОГИЯТА В ОБУЧЕНИЕТО ПО ПРИРОДНИ НАУКИ
STEM технологията е иновативна образователна технология. Тя е насочена към развитие на интелектуалните способности на учениците, към конструктивна и познавателно-изследователска дейност и техническо творчество. В статията са представени основните дидактически...
проектно базирано обучение; STEM технологии; обучение по природни науки; умения на XXI век
РАЗВИТИЕ НА ХИПОТЕЗИТЕ ЗА БИОХИМИЧНИЯ ПРОИЗХОД НА ЖИВОТА
Анализират се основните положения и критики на водещи хипотези за биохимичния произход на живота в резултат на новите постижения в природните науки и технологии. Съпоставят се базисните им характеристики по отношение на предполагаемите геохимични условия и защ...
хипотези; главни етапи и доказателства; абиогенен синтез; еволюция; геномика; ЛУКА