METHODOLOGY OF PROJECT AND RESEARCH ACTIVITY OF STUDENTS IN PHYSICS LESSONS

Цель. Статья посвящена актуальной проблеме организации и проведения проектно-исследовательской деятельности учащихся в современной школе. Предметом анализа выступают технологии творческой деятельности. Авторы ставят своей целью разработать методику организации и проведения проектно-исследовательской деятельности учащихся в процессе обучения физике на основе технологического подхода.Метод или методология проведения работы. В основу исследования положен системно-деятельностный и технологический подходы.Результаты. Авторами представлен анализ результатов констатирующего эксперимента, дана классификация видов проектно-исследовательской деятельности. Сделан обобщенный анализ возможностей учебно-методических комплектов по физике для определения тематики проектно-исследователькой деятельности. Представлена методика, раскрыты структура и содержание всех этапов проектно-исследовательской деятельности.Область применения результатов. Результаты исследования могут быть применены в сфере образования в качестве методической поддержки практикующему учителю, занимающемуся технологиями творческой деятельности учащихся в процессе обучения.Purpose. The article is devoted to the actual problem of organizing and conducting design and research student’s activities in a modern school. The subjects of the analysis are the technologies of creative activity. The authors aim to develop a methodology for organizing and conducting research student’s activities in the teaching physics process on the basis of technological approach.Methodology. The research is based on system-activity and technological approaches.Results. The authors present the analysis of the stating experiment results, the classification of the type of design and research activities. The generalized analysis of the educational-methodical sets on physics possibilities on definition of temaki by design research activity is made. The methodology is presented, the structure and content of all design stages and research activities are disclosed.Practical implications. The results of the study can be applied in the field of education as a methodological support to a practicing teacher engaged in the technology of student’s creative activity in the learning process

Through-space hopping transport in an iodine-doped perylene-based metal–organic framework

Electrically conductive metal-organic frameworks (MOFs) have emerged in the past few years as promising materials towards applications in (opto)electronics, electrocatalysis and energy storage, among others. One of the most common strategies for the design of conductive MOFs is based on the use of electroactive organic ligands and their partial oxidation/reduction to increase the number of charge carriers. Although perylene salts were reported as the first molecular conductors, they have been scarcely explored as building blocks for the construction of conductive MOFs. Herein we report the electrical conductivity enhancement of a microporous perylene-based MOF upon partial ligand oxidation by using two-probe single-crystal devices. The origin of the conductivity enhancement is rationalised by means of spectroscopic studies and quantum-chemical calculations, supporting a through-space hopping transport along the herringbone perylene packing. This study opens the way for the design of conductive MOFs based on perylene building blocks.publishe

Reduction of superintegrable systems: the anisotropic harmonic oscillator

We introduce a new 2N--parametric family of maximally superintegrable systems in N dimensions, obtained as a reduction of an anisotropic harmonic oscillator in a 2N--dimensional configuration space. These systems possess closed bounded orbits and integrals of motion which are polynomial in the momenta. They generalize known examples of superintegrable models in the Euclidean plane.Comment: 6 pages. Version accepted in Physical Review

Consequences of Nitrogen Doping and Oxygen Enrichment on Titanium Local Order and Photocatalytic Performance of TiO2 Anatase

This work was financially supported by Spanish MINECO (MAT2013-40950-R, MAT2016-78155-C2-1-R, and CTQ2014-52956-C3-1-R), Gobierno del Principado de Asturias (GRUPIN14-060 and GRUPIN14-078), FEDER and South Ural State University thanks for the support the Ministry of Education and Science of the Russian Federation (grant No 16.2674.2014/K

Water-Soluble Polymeric Carbon Nitride Colloidal Nanoparticles for Highly Selective Quasi-Homogeneous Photocatalysis

Heptazine‐based polymeric carbon nitrides (PCN) are promising photocatalysts for light‐driven redox transformations. However, their activity is hampered by low surface area resulting in low concentration of accessible active sites. Herein, we report a bottom‐up preparation of PCN nanoparticles with a narrow size distribution (ca. 10±3 nm), which are fully soluble in water showing no gelation or precipitation over several months. They allow photocatalysis to be carried out under quasi‐homogeneous conditions. The superior performance of water‐soluble PCN, compared to conventional solid PCN, is shown in photocatalytic H2O2 production via reduction of oxygen accompanied by highly selective photooxidation of 4‐methoxybenzyl alcohol and benzyl alcohol or lignocellulose‐derived feedstock (ethanol, glycerol, glucose). The dissolved photocatalyst can be easily recovered and re‐dissolved by simple modulation of the ionic strength of the medium, without any loss of activity and selectivity.This work was funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)—Projektnummer 364549901—TRR 234 [Projects B6, B7, C3 and Z2] and BE 5102/3‐1. We acknowledge also support by Spanish MINECO (MAT2016‐78155‐C2‐1‐R) and Gobierno del Principado de Asturias (GRUPIN‐ID2018‐170), and the project CICECO‐Aveiro Institute of Materials, FCT Ref. UID/CTM/50011/2019, financed by national funds through the FCT/MCTES. L.M., M.S., and M.I. also acknowledge the National NMR Network (PTNMR), partially supported by Infrastructure Project N° 022161, and FCT/MCTES for funding (Project PTDC/QEQ‐QAN/6373/2014). B.K. acknowledges the University of Iceland Research Fund for support through a PhD fellowship. Computational resources were provided by the state of Baden‐Württemberg through bwHPC and the German Science Foundation (DFG) under Grant No. INST 40/467‐1 FUGG. C.N. and A.T. acknowledge financial support of the DFG through the project TU 149/8‐2 “Towards photo‐active membranes for artificial photosynthesis” as well as the DFG through a research infrastructure grant INST 275/257‐1 FUGG. I.K. acknowledges the support of the Alexander von Humboldt Foundation through the Humboldt Research Fellowship.Peer reviewe

Fotocatalizadores basados en dióxido de titanio y nitruro de carbono polimérico en reacciones de oxidación total y selectiva

Programa de Doctorado en Materiales.Peer reviewe