Autor: Rezaei, A. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Robust impedance control of a piezoelectric stage under thermal and external load disturbances
Autorzy:: Zareinejad, M.
Rezaei, S. M.
Ghidary, S. S.
Abdullah, A.
Motamedi, M.
Powiązania:: https://bibliotekanauki.pl/articles/969687.pdf
Data publikacji:: 2009
Wydawca:: Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:: piezoelectric actuator
sliding mode
impedance control
hysteresis
Opis:: Piezoelectric actuators are widely used in micromanipulation tasks such as atomic force microscopy and cell manipulation. However, the hysteresis nonlinearity and the creep reduce their fidelity and cause difficulties in the micromanipulation control procedure. Besides, variation of temperature and external loads could change the model parameters identified for the piezo actuator. In this paper, a novel feedforward-feedback controller is proposed. The modified Prandtl-Ishlinskii model is utilized to linearize the actuator hysteresis in feedforward scheme and a sliding mode based impedance control with perturbation estimation is used to cancel out the thermal and external load disturbances in feedback scheme. The efficiency of the proposed controller is verified by experiments.
Źródło:: Control and Cybernetics; 2009, 38, 3; 635-648
0324-8569
Pojawia się w:: Control and Cybernetics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Genetic diversity among Xanthomonas citri subsp. citri strains in Iran
Autorzy:: Rezaei, M.K.
Shams-Bakhsh, M.
Alizadeh, A.
Powiązania:: https://bibliotekanauki.pl/articles/65267.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:: Citrus bacterial canker (CBC) is one of the most important diseases of citrus. It is caused by Xanthomonas citri subsp. citri (Xcc). To investigate the variability of Xcc, a collection of twenty-five strains were isolated from the Fars, Hormozgan, Kerman and Sistan-va-Baluchestan provinces of Iran. The twenty-five strains were assessed phenotypically and genetically. These strains had similar biochemical properties. Based on host range determination, the strains were divided into two groups; the first group was pathogenic on Mexican lime (Citrus aurantifolia), citrumelo (Poncirus trifoliata x C. paradisi), citrange (C. sinensis x P. trifoliata) and sour orange (C. aurantium) varieties. The second group was pathogenic on Mexican lime only. Profile of cellular soluble proteins analyzed by sodium dodecyl sulphate-polyacryamid gel electrophoresis (SDS-PAGE) did not reveal any considerable differences among strains. Genetic diversity analyses were performed using two marker systems; repetitive polymerase chain reaction (rep-PCR) and random amplified polymorphic DNA (RAPD). The results of this research showed that two primers, ERIC 1R and 232, with the highest marker index, resulted in the most genetic variability among strains. Cluster analysis by band patterns showed that strains from the Sistan-va-Baluchestan province were a different group, so it was concluded that geographical origin of strains from the Sistan-va-Baluchestan province is different than the geographical origin of strains isolated from other provinces.
Źródło:: Journal of Plant Protection Research; 2012, 52, 1
1427-4345
Pojawia się w:: Journal of Plant Protection Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Synthesis of Hexabenzylhexaazaisowurtzitane (HBIW) under Ultrasound Irradiation with Fe3O4@PCA Nanoparticles as an Efficient and Reusable Nanomagnetic Catalyst
Autorzy:: Malekzadeh, A. M.
Shokrollahi, S.
Ramazani, A.
Rezaei, S. J. T.
Asiabi, P. A.
Joo, S. W.
Powiązania:: https://bibliotekanauki.pl/articles/358107.pdf
Data publikacji:: 2017
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:: hexabenzylhexaazaisowurtzitane (HBIW)
nanomagnetic catalyst
solid acid
Fe3O4@PCA
ultrasound irradiation
Opis:: Magnetic Fe3O4@polycitric acid (Fe3O4@PCA) nanoparticles were prepared by the reaction of Fe3O4 nanoparticles with an excess amount of citric acid at 100-160 °C. The magnetic Fe3O4@PCA nanoparticles were characterized by infrared spectroscopy (FTIR), scanning electron microscope (SEM), Transmission Electron Microscopy (TEM), Thermogravimetric Analysis (TGA) and powder X-ray diffraction (XRD). Finally, the synthesized magnetic Fe3O4@PCA nanoparticles were used as a heterogeneous solid acid catalyst for the synthesis of HBIW from benzylamine and glyoxal in acetonitrile-water solvent under ultrasonic irradiation conditions. The catalyst could be reused up to 6 times without significant loss of activity.
Źródło:: Central European Journal of Energetic Materials; 2017, 14, 2; 336-350
1733-7178
Pojawia się w:: Central European Journal of Energetic Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Environmental and occupational exposure to chemicals and related occupational diseases
Autorzy:: Chmielewski, J.
Kordyzon, M.
Dziechciaz, M.
Rezaei, A.
Wójtowicz, B.
Gworek, B.
Łuszczki, J.J.
Powiązania:: https://bibliotekanauki.pl/articles/54158081.pdf
Data publikacji:: 2022
Wydawca:: Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Opis:: Exposure to chemical substances at work may result in negative health effects for workers that are classified as occupational diseases after meeting the formal requirements. Objective of the work: to analyse results of inspections by the State Sanitary Inspectorate in the Mazovia Province in years 2012-2019. Materials and methods: Data concerning occupational diseases were obtained within the scope of access to public information from the Provincial Sanitary and Epidemiological Station in Warsaw. The analysis included data on occupational diseases according to disease entities, pathogenic factor, place of work defined according to the Polish Classification of Activity, and occupational exposure to chemical substances. Results: Occupational diseases for which chemical agents constituted an identified aetiological factor during this period of the analysis of the incidence of occupational diseases resulting from occupational exposure to chemical substances among workers employed at employment establishments subject to the official control accounted for 25.9% (445) of all 1717 (100%) diagnosed occupational diseases. The incidence of occupational diseases resulting from exposure to chemical substances has shown an increasing trend since 2017. The main aetiological agent of the diagnosed occupational diseases was asbestos dust, which was responsible for 325 identified cases. Allergenic agents and irritants were the second aetiological causative factor of the diagnosed occupational diseases – 56 cases. Dust containing free crystalline silica was the third aetiological factor causing 47 cases. Conclusions: Understanding the long-term health effects of exposure to chemical substances and application of occupational health and safety regulations requires continuation of official inspections of the working conditions as well as preventive measures aimed at health education of workers, use of protective measures and examination of the work environment.
Źródło:: Journal of Elementology; 2022, 27, 4; 897-915
1644-2296
Pojawia się w:: Journal of Elementology
Dostawca treści:: Biblioteka Nauki

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