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Wyszukujesz frazę "Alizadeh, M." wg kryterium: Autor

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    Wyświetlanie 1-13 z 13
    Tytuł:
    Residence time distribution model of dual phase fluid flow in the mixer settler
    Model RTD (Rozkład Czasu Przebywania) do opisu dwufazowego przepływy w osadniku
    Autorzy:
    Alizadeh, M.
    Hosseinzadeh, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/317994.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Przeróbki Kopalin
    Tematy:
    simulation
    RTD model
    RTDWEN
    MATLAB
    mixer settler
    symulacja
    model RTD
    rozkład czasu przebywania
    RTDWEN – oprogramowanie
    Matlab
    osadnik
    Opis:
    In this study, the residence time distribution of the fluid stream in a mixer settler was simulated in order to achieve the optimal extraction time and the best performance. The aqueous and organic phases were water and kerosene, respectively; and the salt tracer changes were recording continuously by using a conductivity meter. Initially, experiments were performed at different mixing times in the phase ratio of 1:1. Then, results were analyzed applying Matlab software and Weller and N-Mixer models in RTDWEN software. Finally, for the mixing period of 5 min, the mean residence time was obtained 4.86 min by Matlab, and 6.44 and 6.62 min by RTDWEN, respectively for Weller and N-Mixer models. Furthermore, setting the mixing period at 5 min, the effect of mixer settler units was investigated by using N-Mixer model, and it was found that it was beneficial to increase the number of units, and set the residence time distribution close to extraction time at 6 min. It was also shown that under these conditions, the removed material from the mixer before the mean residence time was minimum, and both phases have an enough time for mixing and settling.
    W badaniu zasymulowano rozkład czasu przebywania strumienia płynu w osadniku w celu osiągnięcia optymalnego czasu ekstrakcji i najlepszej wydajności procesu. Fazami wodnymi i organicznymi były odpowiednio woda i nafta; zmiany wskaźnika kwasowości były rejestrowane w sposób ciągły dzięki użyciu konduktometru. Początkowo eksperymenty przeprowadzano przy różnych czasach mieszania przy stosunku faz 1:1. Następnie wyniki analizowano stosując środowisko programu Matlab oraz modele Weller i N-Mixer w programie RTDWEN. Finalnie, dla czasu mieszania wynoszącego 5 minut, otrzymano 4,86 min w programie Matlab oraz 6,44 i 6,62 min w programie RTDWEN odpowiednio dla modeli Weller i N-Mixer. Co więcej, po ustawieniu czasu mieszania na 5 min badano efekt jednostek osadnika przez użycie modelu N-Mixer i dowiedziono, że korzystne było zwiększenie liczby jednostek oraz nastawienie czasu rozkładu zbliżonego do czasu ekstrakcji wynoszącego 6 min. Pokazano również, że w tych warunkach materiał usunięty z mieszalnika zanim właściwy czas przebywania był minimalny, a obie fazy miały wystarczająco dużo czasu na mieszanie i osadzanie.
    Źródło:
    Inżynieria Mineralna; 2013, R. 14, nr 2, 2; 25-30
    1640-4920
    Pojawia się w:
    Inżynieria Mineralna
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluating organizational antifragility via fuzzy logic : the case of an Iranian company producing banknotes and security paper
    Autorzy:
    Ghasemi, A.
    Alizadeh, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/969063.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    antifragility
    X-events
    triangular fuzzy number
    entropy technique
    linguistic term
    Euclidean distance
    liczba rozmyta trójkątna
    entropia
    termin lingwistyczny
    odległość euklidesowa
    Opis:
    The concept of antifragility has received much attention from researchers in recent years. Contrary to fragile systems which fail when exposed to stressors, antifragile systems prosper and improve in response to unpredictability, volatility, randomness, chaos and disturbance. The implications of antifragility goes beyond resilience or robustness. A resilient system resists stress and remains the same; while an antifragile system improves. Taleb argues that antifragility is required for dealing with events that he called black swans or X-events, which are scarce, unpredictable, and extreme events. Such events come as a surprise and have major consequences. The concept of antifragility was developed by Taleb in a socioeconomic context, not in industrial production. However, the authors think that this concept may have its greatest practical utilization when applied to industrial environments. Thus, they focused on this concept in the article aiming to investigate the level of antifragility in an organization. In order to perform this, the authors used a case study based on an Iranian manufacturer of banknotes and security paper (TAKAB). Firstly, a questionnaire was designed based on 7 criteria related to antifragility using the five-point Likert scale and a triangular fuzzy number for each linguistic term is defined. In the next phase, the weight of each component was obtained using the entropy technique. In the final stage, the Euclidean distance between the aggregated fuzzy antifragility index (FAI) and each linguistic term used during this case study was calculated. Finally, based on these results, the level of the organization’s antifragility was assessed as satisfactorily antifragile, based on the minimum Euclidean distance.
    Źródło:
    Operations Research and Decisions; 2017, 27, 2; 21-43
    2081-8858
    2391-6060
    Pojawia się w:
    Operations Research and Decisions
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Temporal expression of three conserved putative microRNAs in response of Citrus × Limon to Xanthomonas citri subsp. citri and Xanthomonas fuscans subsp. Aurantifolii
    Autorzy:
    Alizadeh, M.
    Askari, H.
    Najafabadi, M.S.
    Powiązania:
    https://bibliotekanauki.pl/articles/81264.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    lemon
    fruit canker
    bacterial disease
    Xanthomonas
    microRNA
    plant-pathogen interaction
    reserve transcript polymerase chain reaction
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2017, 98, 3
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A fuzzy KNN-based model for significant wave height prediction in large lakes
    Autorzy:
    Nikoo, M.R.
    Kerachian, R.
    Alizadeh, M.R.
    Powiązania:
    https://bibliotekanauki.pl/articles/48113.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    wave height
    prediction
    fuzzy set theory
    lake
    Bayesian network
    support vector regression
    Źródło:
    Oceanologia; 2018, 60, 2
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dose Dependences of the Conductivity and Luminescence in ZnSe Single Crystals
    Autorzy:
    Degoda, V.
    Alizadeh, M.
    Martynyuk, N.
    Pavlova, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/1030889.pdf
    Data publikacji:
    2018-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    72.20.-i
    78.55.Et
    29.40.Mc
    Opis:
    The studies of time-resolved dose dependences of conductivity and luminescence in ZnSe crystals at various temperatures (8, 85, 295, and 430 K) under X-ray and UV-excitation have revealed that dose dependences under X-ray excitation build up much more slowly and are more informative in comparison with UV-excitation. It is due to high penetrating depth of X-ray radiation and respective involvement of a large sample volume in the kinetic processes. Also, due to the local inhomogeneity of the excitation in the absorption of X-quantum, a significant share of the generated electron-hole pairs recombine in this local area creating a scintillation pulse, and not participating in the conductivity. The delay in the onset of the X-ray conductivity buildup at 8 K for several seconds is due to the high efficiency of the localization of free carriers in the traps, all of which become deep at this temperature. The different buildups of various bands of luminescence of irradiation time can be explained by not only different concentration of luminescence centers but also by their localization in various sections of free charge carriers. Dose dependences of the luminescence and conductivity also show that the scintillation pulse amplitudes and the current pulse amplitudes of the X-ray conductivity are not constant during irradiation of the ZnSe crystals.
    Źródło:
    Acta Physica Polonica A; 2018, 133, 4; 984-989
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of 99Mo potential production via UO2SO4 liquid target irradiation in a 5 MW nuclear research reactor
    Autorzy:
    Gholamzadeh, Z.
    Mirvakili, S. M.
    Davari, A.
    Alizadeh, M.
    Joz-Vaziri, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/148499.pdf
    Data publikacji:
    2017
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    research reactor
    99Mo production
    uranyl sulphate
    liquid target
    MCNPX code
    Opis:
    The activation method for 99Mo production in comparison to fi ssionable target irradiation in research reactors is less preferable. Therefore, 99Mo yield using UO2SO4 samples was theoretically investigated. Computational results revealed admirable potential of the liquid samples for 99Mo production. Low-concentrated uranyl sulphate samples could easily be handled by the irradiation box. The sample geometry optimization improves thermal hydraulic conditions and production yield. The optimized geometry including only 0.12 g 235U produced 57Ci99Mo at end-of-irradiation (EOI) with a temperature peak of 72°C during the irradiation.
    Źródło:
    Nukleonika; 2017, 62, 1; 37-45
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of Seed Emergence, Seedling Vigor Enhancement of Some Populations From Satureja Bachtiarica With Chemical, Mechanical and Physiological Treatment
    Autorzy:
    Alizadeh, M. A.
    Arab, H.A.
    Tabaie, R.
    Nasiri, M.
    Jafari, A.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2199668.pdf
    Data publikacji:
    2016-12-20
    Wydawca:
    Instytut Hodowli i Aklimatyzacji Roślin
    Tematy:
    dormancy
    germination
    Satureja bachtiarica
    vigor
    Opis:
    The seeds of 3 populations from Satureja bachtiarica were collected from three native vegetation areas (Simirom2, Sharkord and Yazd). The different treatments including: cold stratification, gibberlic acid (50 and 100 ppm) Potassium nitrate (0.2 and 0.4 percent). Physical scarification (sand paper), chemical scarification (Ethylic alcohol %70) and distilled water (control) were used for breaking dormancy of the seed samples. For greenhouse experiment, the seed samples were treated with treatments and then were sown in pots using randomize design with three replications. Emergence percentage, emergence speed, length of root and shoot, seedling length, root/shoot length ratio, vigor index, seedling fresh and dry weight, dry/fresh weight ratio were evaluated during 45 days of experiment. Comparing of population Semirom2 form savory of Bachtiary was higher than other population. It was concluded that effect of gibberlic acid and potassium nitrate was higher than physical scarification and chemical scarification comparing with control.
    Źródło:
    Plant Breeding and Seed Science; 2016, 74; 37-44
    1429-3862
    2083-599X
    Pojawia się w:
    Plant Breeding and Seed Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Variation and relationships of aerial yield, morpho-agronomic traits and essential oil composition in domestic populations of Ziziphora tenuior in Iran
    Autorzy:
    Moradi, R.
    Alizadeh, M.A.
    Hervan, E.M.
    Shanjani, P.S.
    KhanghaniS.
    Jafari, A.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/12703281.pdf
    Data publikacji:
    2020
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Opis:
    The present study was carried out to evaluate aerial yield, agronomic traits, essential oil production, and their relationships in 21 populations of Ziziphora tenuior in Karaj, Iran over two years (2016–2017). The experimental layout was a randomized complete block design with three replications. Data were collected for GDD (Growth Degree Days), plant height, canopy area, stem number, flower number, aerial fresh yield, aerial dry matter (DM) yield, seed yield, essential oil percentage and oil production. The essential oil compositions were detected in accession 2929 (Tassoj) using GC/MS. Result of combined analysis of variance across two years showed significant differences between years, populations and population × year interaction for all traits (P < 0.01). In comparisons among populations, the population of Avaj and Ijroud with average values of 13.5 and 14.33 g/p had higher aerial dry yield and other agronomic traits followed by Meshkin2 and 3. For seed yield, Ormieh with average values of 3.11 g/p had higher production. For oil content, the populations of Tassoj, Salmas and Sharkord with average values of 1.25 to 1.56% had higher oil content and essential oil production. Result of correlation analysis showed that DM yield was positively correlated with GDD, plant height, canopy area, stem number, flower number. Oil content was negatively correlated with aerial DM yield. The results of PCA analysis showed that the first four components accounted for 50, 20, 12 and 10% of the total variation, respectively. Plant height, canopy area, stem number, flower number and aerial yield in the PCA1, essential oil content and oil production in the PCA2, seed yield in the PCA3 and GDD in PCA4 components were identified as important traits. Using Ward cluster method, the 21 populations were grouped into 3 clusters. In total, 23 compounds were identified in the essential oil from the aerial parts Z. tenuior. The major components in the essential oil were pulegone ranged (47.54 to 65.26%) followed by neo-iso-dihydro carveol, carvacrol, piperitenone, limonene, 1.8-cineole, p-mentha-3,8-dien, alpha-terpinene and terpinen-u-ol. It was concluded that there were wide range of variations for agronomic trait and essential oil in domestic germplasm of Z. tenuior to improved breeding new varieties in Iran.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2020, 19, 1; 119-130
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assisted phytoremediation of Cd-contaminated soil using poplar rooted cuttings
    Autorzy:
    Alizadeh, S.M.
    Zahedi-Amiri, G.
    Savaghebi-Firoozabadi, G.
    Etemad, V.
    Shirvany, A.
    Shirmardi, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/26513.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Źródło:
    International Agrophysics; 2012, 26, 3
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    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
    Artykuł
    Tytuł:
    Analysis on genetic contribution of some traits*to seed yield in rapeseed by additive-dominance genetic method of mixed model.
    Autorzy:
    Sabagbnia, N.
    Dehghani, H.
    Alizadeh, B.
    Mohghaddam, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2199586.pdf
    Data publikacji:
    2010-12-01
    Wydawca:
    Instytut Hodowli i Aklimatyzacji Roślin
    Tematy:
    additive x year interaction
    Brassica napus L
    diallel
    dominance x uear interaction
    Opis:
    A genetic model is developed with additive, dominance and genotype × environment interaction effects for the progeny from a diallel mating design. To uncover the genetic contributions of some traits of rapeseed to seed yield and find indicator traits for indirect selection, multivariable conditional analysis was conducted based on this method. Therefore, an experiment was conducted to estimate genetic parameters using a half diallel of nine international rapeseed cultivars. The 36 F1 hybrids, the parents and four additional cultivars were planted in the breeding nurseries in 2008 and 2009. Several traits including number of pods per plant (NPP), pod length (LP), height of the first pod (HFP), height of the first lateral branch (HFB), stem diameter (SD), days of flowering period (FP), days to physiological maturity (DPM) and seed yield were recorded. The genetic variance component (VD×Y) was significant for all the studied traits but the genetic variance component (VA) was significant for NPP, HFB, HFP, DPM and SY traits and the genetic variance component (VD) was significant for HFB, HFP, LP and FP traits. There was significant positive phenotypic correlation (rA) between seed yield with NPP and HFP and there was significant positive dominance × year interaction correlation (rD×Y) between seed yield with NPP and DPM while there was significant negative dominance × year interaction correlation (rD×Y) between seed yield with HFB, LP and FP. There were significantly positive additive effects of SY for two parents Orient and Talaye. Finally according to additive-dominance genetic model and conditional genetic effects, the genotypes Talaye proved good general combiner for seed yield improvement and crosses 4 × 8 (Orient × Talaye), 7 × 8 (Opera × Talaye) were found the best specific combiner for all the studied traits...
    Źródło:
    Plant Breeding and Seed Science; 2010, 62; 57-72
    1429-3862
    2083-599X
    Pojawia się w:
    Plant Breeding and Seed Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    1.25GS/S 12bit and 2.27mW digital to analog converter (DAC) with 70.22 SNDR based on new hybrid R-C procedure in 180nm CMOS
    Autorzy:
    Mahdavi, S.
    Poreh, M.
    Alizadeh, L.
    Moradkhani, B.
    Ebrahimi, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/398146.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
    Tematy:
    SAR ADC
    DAC
    high-resolution
    power consumption
    high-speed
    wysoka rozdzielczość
    pobór mocy
    Opis:
    This paper presents a novel fully differential high-speed and high-resolution Digital to Analog Converter (DAC) based on new reliable hybrid R-C technique. In the proposed idea the four LSB bits and eight MSB bits are implemented as a resistor string and new merged capacitor technique respectively. Applying the suggested method the SNDR and Effective Number of Bits (ENOB) of the proposed DAC achieve 70.22dB and 11.41 bit at the 1.25GS/s sampling rate correspondingly. In the proposed method the total capacitors of the 8 MSB bits are reduced up to 78% compared to the conventional one noticeably. As a result, the power consumption and speed of the suggested DAC are decreased and increased respectively. Moreover, the total power consumption of the proposed DAC is 2.27mW with the power supply of 1.8 volts as well. Meanwhile, for the correctness of the proposed 12bit DAC, 200 iterations in transient Monte-Carlo analysis (parasitic capacitance included ([symbol] mismatch = 1.2%)), and the SNDR simulation results versus different input frequency at fS=1.25GS/s sampling rate are applied too. The maximum Integral Nonlinearity (INL) and the maximum Differential Nonlinearity (DNL) are -0.47/+0.35LSB and -0.42/+0.29 LSB respectively. The proposed DAC structure is simulated in all process corners and performed using the HSPICE BSIM3 model of a 0.18μm CMOS technology.
    Źródło:
    International Journal of Microelectronics and Computer Science; 2017, 8, 4; 127-132
    2080-8755
    2353-9607
    Pojawia się w:
    International Journal of Microelectronics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-13 z 13

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