23 research outputs found

    DETERMINATION OF THE RELIABILITY OF AIR POLLUTION MEASUREMENT DATA BASED ON VEHICULAR EMISSION RECOGNIZED AS CONCOMITANT IN ASTANA

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    Air pollution is a primary global concern due to its adverse effects on human health and the environment. Accurate air pollution measurement is crucial for developing effective control strategies and evaluating their impact. In Astana, vehicular emissions are recognized as a significant contributor to air pollution. This study aims to determine the reliability of air pollution measurement data in Astana by examining the impact of vehicular emissions on air quality to establish the accuracy of air pollution measurement methods in the city. The study will use a combination of monitoring and modeling techniques to quantify the contribution of vehicular emissions to air pollution in Astana. The monitoring component will involve the deployment of air quality monitoring stations throughout the city to measure levels of pollutants such as particulate matter (PM). The modeling component will use air dispersion models to simulate the dispersal of pollutants from vehicular emissions and predict their concentration levels in different parts of the city. The results of this research will provide insights into the effectiveness of existing air pollution control strategies and may inform future efforts to improve air quality in Astana. Based on the collected data for a certain period, a comparative table is built describing the difference between the actual data from the collection points of air emission indicators. The article will likely interest researchers and policymakers concerned with air pollution and its effects on human health and the environment. The critical point of the article is that air quality is affected not only by transport but also by other emissions

    Synthesis of trans-porphyrin dimers for nonlinear optics

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    Following the development of the idea of octupolar molecules as nonlinear optical materials a variety of compounds have been reported. Trans-porphyrins have a great potential to self-order into octupolar symmetry. Nonlinear optical properties can be tuned by using strong donor-acceptor groups in porphyrins as well as extention of conjugation. Here we report the syntheses of trans-A2D2-porphyrins and their dimerization into cubic octupoles by lanthanides and organic bidentate ligands. Bulky groups are employed to induce non-centrosymmetric eclipsed or staggered conformations. Effect of donor acceptor groups, dimerization conditions and crystal packing of dimers are studied.Research Grant of Ministry of Education and Science of Kazakhsta

    SOCRATIC SEMINAR: A STRATEGY TO SUPPORT STUDENT DISCOURSE

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    Considering the importance of 11th-grade students mastering critical thinking and argumentation skills during an English lesson in order to pass the final and international exams, this study explores the effect of the Socratic seminar on improving these skills. The study is aimed to examine the potential impact of the Socratic Method (SM) on the development of critical thinking and argumentative reading and writing skills of 11th-grade gifted English students in an online environment

    A home automation system using EnOcean wireless technology and Beckhoff Automation

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    Energy renovation of existing old detached houses and designing a new home automation system for them induce a huge potential for energy efficiency increase in Northern European countries. In Finland, there are more than a million of such wooden traditional houses, which could make a vast energy saving in general. This paper is a follow-up of the research work, which focused on energy renovation of an old, wood-framed, and poorly insulated house in Finland. Having a mindset that the house was fully refurbished, this project targeted to level up the plus energy concept and to bring in a smart home system. After having completed a profound analysis of the current energy situation of the house and reviewed literature concerning the common technologies, the hardware and software elements for this project were selected. The Beckhoff Automation was chosen to be a base framework of the system, whereas EnOcean’s wireless technology acted as a main device. The focus of the system fell on the lighting control since it had a capability for great energy savings and was easy to handle. The project resulted in a small home automation prototype with a visualization board for a user

    Design and synthesis of organic nonlinear optical materials

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    A new class of materials based on octupolar symmetries has been proposed for nonlinear optical (NLO) applications in early 1990s [1]. Unlike traditional dipolar systems octupolar molecules lack permanent dipole moments and have better chances to adopt noncentrosymmetric packing. The objective of this work is to prepare cubic octupoles based on trans-porphyrin dimers; these cubic systems are expected to show high nonlinearities at molecular as well as crystalline scale

    Design and synthesis of organic nonlinear optical materials

    No full text
    A new class of materials based on octupolar symmetries has been proposed for nonlinear optical (NLO) applications in early 1990s [1]. Unlike traditional dipolar systems octupolar molecules lack permanent dipole moments and have better chances to adopt noncentrosymmetric packing. The objective of this work is to prepare cubic octupoles based on trans-porphyrin dimers; these cubic systems are expected to show high nonlinearities at molecular as well as crystalline scale
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