Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "Mohammadi, Hamid" wg kryterium: Autor

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-6 z 6
    Tytuł:
    A New Method for an Electric Vehicle Wireless Charging System Using LCC
    Autorzy:
    Khademi, Hamid Reza
    Moghaddam, Mahmoud Samiei
    Baygi, Seyed Javad Mohammadi
    Hajizadeh, Amin
    Powiązania:
    https://bibliotekanauki.pl/articles/102202.pdf
    Data publikacji:
    2019
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    power transfer system
    electric vehicle
    output power
    efficiency
    optimization
    układ przeniesienia mocy
    pojazd elektryczny
    moc wyjściowa
    sprawność
    optymalizacja
    Opis:
    Nowadays, there is a need for charging electric vehicles (EVs) wirelessly, since it provides a more convenient, reliable, and safer charging option for the EV customers. A wireless charging system using a double-sided LCC compensation topology is proven to be highly efficient; however, the large volume induced by the compensation coils is a drawback. Endocrine links are more useful in transmitting power wirelessly than other links. These links are used in the transmission of low and medium power. In this paper, by analyzing the equivalent circuit of a WPT power transmission system, the optimal value of the inductance was formulated to increase the yield. This can have other applications. In order to neutralize the reactive losses, the series resonance is used in both in primary and secondary sections, among which the lower quantities of series inductors were selected from the initial values to increase the efficiency and power. Furthermore, it is possible to optimize these values using suitable optimization methods. In this study, the PSO algorithm was used for this purpose.
    Źródło:
    Advances in Science and Technology. Research Journal; 2019, 13, 3; 98-112
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis and Designing of a Wireless Charging System for Electric Vehicles Using the Topology of Double Sided LLC Compensator
    Autorzy:
    Khademi, Hamid Reza
    Moghaddam, Mahmoud Samiei
    Baygi, Seyed Javad Mohammadi
    Hajizadeh, Amin
    Powiązania:
    https://bibliotekanauki.pl/articles/103301.pdf
    Data publikacji:
    2019
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    wireless charging system
    electric vehicles
    continuous conduction mode
    discontinuous conduction mode
    bezprzewodowy system ładowania
    pojazdy elektryczne
    tryb ciągłego przewodzenia
    tryb przewodzenia nieciągłego
    Opis:
    The purpose of the present study was to simulate the equivalent circuit in the MATLAB software in order to implement the desired relationships for both continuous-conduction mode (CCM) and discontinuous-conduction mode (DCM), and to obtain the power and efficiency values at different frequencies. Then, it was necessary to optimize the effective values on the power by Particle Swarm Optimization (PSO) algorithm. After optimization, the optimization and pre-optimization results were compared and, if post-optimization results were not desirable, effective parameters should be reviewed before the optimization stage and the tunable parameters should be changed to achieve the desired results. This process will continue to obtain the optimization results. The results show that the highest efficiency is 98% in the DCM mode and 95% in the CCM mode. In both methods, we achieved more favorable results than the with the PSO method. However, the DCM mode provides an improvement which is about 2.6% higher than CCM.
    Źródło:
    Advances in Science and Technology. Research Journal; 2019, 13, 2; 168-175
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Chlorophyll fluorescence response of wheat to exogenous application of growth regulators under terminal drought stress
    Autorzy:
    Mohammadi, Hamid
    Janmohammadi, Mohsen
    Sabaghnia, Naser
    Powiązania:
    https://bibliotekanauki.pl/articles/763897.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
    Tematy:
    abscisic acid
    cytokinin
    photosynthetic capacity
    stomatal conductance
    terminal water deficit
    kwas abscysynowy
    cytokinina
    wydajność fotosyntezy
    przewodnictwo szparkowe
    krańcowy deficyt wodny
    Opis:
    Drought stress negatively affects plant photosynthesis and disturbs the electron transport activity. Evaluation of the chlorophyll fluorescence parameters might reflect influence of the environmental stress on plants and can be applied as an indicator of the primary photochemistry of photosynthesis. In current study the effect of foliar application of benzylaminopurine (BAP, a synthetic cytokinin) and abscisic acid (ABA) on chlorophyll fluorescence parameters of relatively drought tolerant (Pishtaz) and susceptible (Karaj3) bread wheat genotypes under well watered and terminal water deficit condition have been evaluated. Terminal drought was induced by withholding water at anthesis stage (Zadoks scale 65). Results showed that coefficient of non-photochemical quenching of variable fluorescence (qN), quantum yield of PS II photochemistry (ΦPSII) and photochemical quenching (qP) were affected by hormone spray treatments. So that evaluation of parameters at 7 day after foliar treatments revealed that ABA significantly increased electron transport rate (ETR) and qN while considerably decreased ΦPSII, gs and maximum quantum yield of photosystem II (Fv/Fm). However exogenous application of cytokinin could increase gs, Fv/Fm and ΦPSII and the highest value of these parameters was recorded in cytokinin treated plants of Pishtaze cv. under well watered condition. Nevertheless, evaluation of the parameters in different periods after spraying showed that with approaching the maturity stage some traits like as gs, Fv/Fm and ETR significantly decreased in both genotypes. Evaluation of gs and Chlorophyll fluorescence parameters of genotypes between different irrigation levels showed that although cv. Pishtaz showed higher performance of PSII under well watered condition, it failed to maintain its superiority under stress condition. This finding suggests that some more responsive parameter like gs, Fv/Fm and ΦPSII can be considered as reliable indicator for understanding the biochemical and physiological effects of exogenous application of phytohormones under terminal drought stress.
    Stres suszy wpływa negatywnie na fotosyntezę roślin oraz zakłóca transport elektronów. Ocena parametrów fluorescencji chlorofilu może odzwierciedlać wpływ stresu środowiskowego na rośliny i może być stosowana jako wskaźnik pierwotnych reakcji fotochemicznych fotosyntezy. W prezentowanych badaniach oceniano wpływ dolistnego stosowania benzyloaminopuryny (BAP, syntetyczna cytokinina) i kwasu abscysynowego (ABA) na parametry fluorescencji chlorofilu w stosunkowo odpornych na suszę (Pishtaz) i podatnych (Karaj3) genotypach pszenicy w warunkach dobrego nawodnienia i skrajnego deficytu wody. Krańcową suszę wywoływano w fazie kwitnienia (65 w skali Zadoks). Wykazano, że współczynnik niefotochemicznego wygaszania fluorescencji (qN), wydajność kwantowa reakcji fotochemicznych PS II (ΦPSII) i fotochemiczne wygaszanie (qP) ulegały zmianom po opryskiwaniu liści hormonami. Ocena parametrów po 7 dniach od dolistnego podania hormonu wykazała, że ABA znacząco zwiększa sprawność transportu elektronów (ETR) i qN, znacznie zmniejsza ΦPSII, gs i maksymalną wydajność kwantową fotosystemu II (Fv/Fm). Jednak egzogenne zastosowanie cytokininy może zwiększyć gs, Fv/Fm i ΦPSII, a najwyższą wartość tych parametrów odnotowano w traktowanych cytokininą roślinach odmiany Pishtaze w warunkach dobrego nawodnienia. Ocena parametrów w różnych okresach po oprysku wykazała, że w bardziej dojrzałych roślinach wskaźniki takie jak gs, Fv/Fm i ETR znacznie zmniejszyły się w obu genotypach. Ocena gs i parametrów fluorescencji chlorofilu genotypów w warunkach różnych poziomów nawodnienia wykazała, że chociaż genotypy Pishtaz wykazały wyższą wydajność PSII w stanie dobrego nawodnienia, nie udało się utrzymać przewagi w warunkach stresu. Odkrycie to sugeruje, że niektóre bardziej czułe parametry takie jak gs, Fv/Fm i ΦPSII mogą być wiarygodnym wskaźnikiem dla zrozumienia biochemicznych i fizjologicznych efektów egzogennego stosowania fitohormonów w warunkach krańcowego stresu suszy.
    Źródło:
    Annales Universitatis Mariae Curie-Sklodowska, sectio C – Biologia; 2015, 70, 1
    2083-3563
    0066-2232
    Pojawia się w:
    Annales Universitatis Mariae Curie-Sklodowska, sectio C – Biologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of Agricultural Students’ Self-Efficacy Beliefs and Test Anxiety on their Achievement Motivation and Academic Performance
    Autorzy:
    Pouratashi, Mahtab
    Zhub, Chang
    Mohammadi, Hamid Movahed
    Rezvanfara, Ahmad
    Hosseinia, Seyyed Mahmoud
    Powiązania:
    https://bibliotekanauki.pl/articles/16530336.pdf
    Data publikacji:
    2013-12-31
    Wydawca:
    Wydawnictwo Adam Marszałek
    Tematy:
    achievement motivation
    academic performance
    self-efficacy beliefs
    test anxiety
    agricultural students
    Opis:
    In this study, the influences of agricultural students’ self-efficacy beliefs and test anxiety on their achievement motivation and academic performance were examined. A sample of 466 students from Iranian Colleges of agriculture participated in this study. A questionnaire was used for data collection. Data were analyzed descriptively and inferentially using SPSS/win and AMOS graphic. The findings revealed that self-efficacy beliefs had more effect on motivation to approach success and academic performance than test anxiety. In contrast, test anxiety had more effect on motivation to avoid failure than self-efficacy beliefs. In addition, motivation to approach success had more effect on academic performance than motivation to avoid failure.
    Źródło:
    The New Educational Review; 2013, 34; 85-98
    1732-6729
    Pojawia się w:
    The New Educational Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Morphological and physiological responses of some halophytes to salinity stress
    Autorzy:
    Mohammadi, Hamid
    Kardan, Javid
    Powiązania:
    https://bibliotekanauki.pl/articles/763867.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
    Tematy:
    salinity stress
    halophytes
    morphological parameters
    physiological parameters
    Opis:
    A pot experiment was conducted to examine whether the morphological and physiological characteristics of some halophytes may be affected by salt stress. For this purpose, a factorial experiment based on randomized complete block design was carried out with three replications. The treatments were some halophytes (Salicornia europaea, Atriplex leucoclada, and Kochia scoparia) and salinity stress levels [Electrical conductivity 0 (Hoagland’s solution), Hoagland’s solution consisting of 100, 200, 300 and 500 mM NaCl]. Among the halophytes tested, Salicornia europaea had significantly higher shoot and root of dry matters compared to the other halophytes in all salt treatments. Salinity stress resulted in an increase in photosynthetic pigments up to 200 mM and thereafter, it decreased in all of the studied plants. Photosynthetic pigments, ranked in a descending order, were high in Kochia scoparia, Salicornia europaea, and Atriplex leucoclada. In addition, salinity stress led to an enhancement in malondialdehyde (MDA) and H2O2. The tolerance of Salicornia europaea under high salinity stress was associated with low MDA and H2O2 contents as well as high contents of photosynthetic pigments. The shoot and root Na+ increased considerably by augmenting the salinity levels in all halophytic plants; however, there was a significant difference among halophytes at higher salinity levels. The shoot K+ decreased by increasing the salinity levels, but K+ partitioning pattern varied among the halophytes. Under saline conditions, the shoot and root Na+/K+ ratio of all halophytes grew. The highest and the lowest of Na+ were observed in Salicornia europaea and Kochia scoparia, respectively. Thus, the Na+/K+ ratio could be considered as an indicator of salt evaluation. Nitrogen, protein content, dry matter digestibility (DMD), and metabolizable energy (ME) were high in Salicornia europaea plants in comparison to other plants at 200–500 mM salinity levels; in contrast, acid detergent fiber (ADF) and netural detergent fiber (NDF) were low. According to the results of this study, the tolerance of halophytes towards NaCl is possibly due to the differences in damage from reactive oxygen species (ROS), especially H2O2, and toxicity to metabolism Na+.
    Źródło:
    Annales Universitatis Mariae Curie-Sklodowska, sectio C – Biologia; 2015, 70, 2
    2083-3563
    0066-2232
    Pojawia się w:
    Annales Universitatis Mariae Curie-Sklodowska, sectio C – Biologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Morphophysiological and biochemical response of savory medicinal plant using silicon under salt stress
    Autorzy:
    Mohammadi, Hamid
    Hazrati, Saeid
    Parviz, Laleh
    Powiązania:
    https://bibliotekanauki.pl/articles/763808.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
    Tematy:
    salinity stress tolerance, Satureja hortensis, ion status, silicon
    Opis:
    Salt stress is one of the most important factors limiting the growth and yield of plants around the world. However, silicon can reduce the harmful effects of salt stress on plants. For this purpose, an experiment was conducted in a factorial arrangement on randomized complete block design with three replications in a research greenhouse on the Satureja hortensis medicinal plant. Experimental treatments consisted of two salinity levels (control and 100 mM) and potassium silicate (Si) at three levels (0, 1, and 2 mM). The results showed that salinity reduced shoot dry weight, photosynthetic pigments and potassium content of shoot. However, sodium, proline, MDA, and H2O2 contents in shoot increased. The highest shoot dry weight, photosynthetic pigment content, proline, RWC, and the lowest content of MDA and H2O2 of the shoot were observed with Si application under salt stress and non-salt stress conditions. The highest yield of essential oil was also observed with Si application under salt stress and non-salt stress conditions. Therefore, the use of silicon in salt stress condition not only minimizes the harmful effects of salt stress by increasing the K+/Na+ ratio and improving the morphological and physiological traits of the Satureja hortensis medicinal plant but also improves the essential oil yield of this medicinal plant in salt stress and non-salt stress conditions.
    Źródło:
    Annales Universitatis Mariae Curie-Sklodowska, sectio C – Biologia; 2017, 72, 2
    2083-3563
    0066-2232
    Pojawia się w:
    Annales Universitatis Mariae Curie-Sklodowska, sectio C – Biologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies