Yazar "Radhi, Sabaa S." seçeneğine göre listele

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    Measuring radiation in space with bubble detectors and the effect of radiation on health system of human body
    (American Institute of Physics Inc., 2023) Al-Khafaji, Zainab S.; Radhi, Sabaa S.; Mahdi, Marwah M.; Radhi, Nabaa Sattar; Mareai, Basim M.
    A bubble detector resembles a testing tube or a human fingertip in size and form. It has a material with small liquid droplets in it. When neutrons collide with the droplets, visible bubbles of trapped gas appear almost instantly. The number of bubbles in the surrounding neutron radiation may be measured optically or with a reader, and the number of bubbles reflects the degree of neutron radiation. The gas bubbles may be compressed again and used again. A bubble detector becomes a radiation sensor utilized to assess neutron levels. Neutrons account for 30 percent of the radiations that astronauts encounter in orbit. When protons collide with a spacecraft's shielding, neutrons are produced. To better monitor specific astronauts' neutron exposures throughout space missions, the Canadian Space Agency's Operation Space Medicine (OSM) Group is sponsoring the development of a personal detector device for space usage depending on Canadian bubble dosimeter technology. The current study focuses on mechanisms utilized for detecting radiation, Neutron detectors, and kinds of Neutron detectors, in addition to the effect of radiation on the health system.
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    Sustainable heating system by infrared radiators
    (Research and Development Academy, 2022) Radhi, Sabaa S.; Al-Khafaji, Zainab S.; Falah, Mayadah W.
    Maintaining the optimum temperature in the living quarters is the key to a comfortable stay. Due to the lack of a central heating system or in the event of its insufficiency, they resort to the installation of additional heat sources. There is a wide range of devices on the market with different operating principles, hence the difficulty of which is better - a convector or infrared heater. A comparative analysis of devices will help you make the right choice. Asking the question of which is better a convection heater or an infrared heater, one must decide on its role in heating the house. It is better to use them as additional equipment with an existing heating system. One of the effective sources of additional heating are infrared radiators. Its principle of operation is based on infrared radiation, which provides a quick and qualitative increase in temperature in any part of your apartment. Today, more and more people prefer infrared radiators. From the usual electric convector, they differ in that they heat not the air in the room, but hard surfaces (floors, walls) and objects, and these, in turn, leak heat into the surrounding space. So, the entire room is heated up unnoticeably.