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    Wyświetlanie 1-8 z 8
    Tytuł:
    Oxidative toxic stress and p53 level in healthy subjects occupationally exposed to outdoor air Pollution – a cross-sectional study in Iran
    Autorzy:
    Vandchali, N.R.
    Koolivand, A.
    Ranjbar, A.
    Zarei, P.
    Fathi, M.
    Malekafzali, S.
    Mollamohammadi, N.
    Jalali-Mashayekhi, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/28762963.pdf
    Data publikacji:
    2020
    Wydawca:
    Instytut Medycyny Wsi
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2020, 27, 4; 585-590
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Two new morphotypes of Pinus eldarica: Discrimination by macromorphological and anatomical traits
    Autorzy:
    Shayanmehr, F
    Jalali, S.G.
    Ghanati, F.
    Kartoolinejad, D.
    Apple, M.E.
    Powiązania:
    https://bibliotekanauki.pl/articles/41605.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    Mondell pine
    Pinus eldarica
    morphotype
    new morphotype
    anatomy
    statistical analysis
    Iran
    anatomical differentiation
    morphological differentiation
    morphometry
    needle
    Opis:
    Pinus eldarica has been introduced to Iran from more than 800 years ago. Some individuals of this pine have altered both in shape and growth rate in northeastern of Iran, and generated two distinct morphotypes which are called Conical-shaped and Ball-shaped pines. This study was conducted to discriminate these morphotypes using macromorphological and anatomical characteristics. Results of macromorphological analysis showed significant differences both with univariate and multivariate analysis and consequently two new morphotypes were clearly separated from Mondell pine individuals. Furthermore, anatomical differences observed in Conical-shaped pine in comparison with two other pines, from some valuable taxonomical point of view traits such as cross-section form of needle, number of stomata per area, number and position of resin ducts etc. Furthermore, the existent difference in traits like cuticle thickness, stomata density, needle perimeter and length, state increasing the adaptation potential to aridity in Conical-shaped pine in comparison with two others. The differences of two new morphotypes demonstrate that they are new variants of Mondell pine and it is need to be used molecular markers and phylogenic studies for specifying the cause of these morphological and anatomical differences.
    Źródło:
    Dendrobiology; 2009, 61; 27-36
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Changes in some chemical properties of saline-sodic soils over time as affected by organic residues: an incubation study
    Autorzy:
    Jalali, M.
    Lotf, M.S.
    Ranjbar, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/971127.pdf
    Data publikacji:
    2020
    Wydawca:
    Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
    Tematy:
    salinity
    sodicity
    agricultural residues
    bioremediation
    incubation
    Opis:
    Salinization and sodification of agricultural lands in arid and semi-arid regions of the world are two limiting factors in the crop production. This study was conducted to evalu- ate the effect of readily available agricultural residues on changing some chemical properties of saline-sodic soils. Wheat, potato, sunflower, and canola residues were separately added into three saline-sodic soils at a rate of 2% by weight and thoroughly mixed with soils. Control and treat- ed soils were incubated for 168 days at a constant moisture and temperature. The pH, electrical conductivity (EC), soluble cations, available nitrate (NO 3 -) and phosphorous (P), cation exchange capacity (CEC), and exchangeable sodium percentage (ESP) were measured during the incuba- tion. The EC increased in the response to the incorporation of plant residues, whereas the pH was reduced. The application of organic components in soils increased CEC and decreased ESP. The results showed that the maximum reduction in ESP was observed in the potato treatment because of the highest Ca2+ concentration. The average reduction in ESP of treated soil samples at the end of incubation followed this order: 16.1% (potato residue-treated soil) >12.7% (canola residue-treated soil) >11.1% (wheat residue-treated soil) >9.6% (sunflower residue-treated soil). The potato residue was the most effective amendment in changing the chemical properties of saline-sodic soils in comparison with other organic residues. The results indicated that the appli- cation of organic residues had a positive impact on reducing the soil sodicity and improving the soil fertility depending on their chemical composition.
    Źródło:
    Polish Journal of Soil Science; 2020, 53, 1
    0079-2985
    Pojawia się w:
    Polish Journal of Soil Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The growth regulatory, deterrency and ovicidal activity of worm wood [Artemisia annua L.] on Tribolium confusum Duv. and identification of its chemical constituents by GC-MS
    Autorzy:
    Haghighian, F.
    Jalali Sendi, J.
    Aliakbar, A.
    Javaherdashti, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/55425.pdf
    Data publikacji:
    2008
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    medicinal plant
    wormwood
    plant extract
    chemical composition
    growth regulation
    insect
    fresh leaf
    Artemisia annua
    Tenebrionidae
    leaf
    Compositae
    Tribolium confusum
    Opis:
    The chemical composition of worm wood Artemisia annua L. (Astraceae), a medicinal plant, was studied by gas chromatography and gas chromatographymass spectrometry (GC-MS). About 60 compounds were identified, from which the major compounds were erythritol (50.30%), camphore (7.25%), pinocarveol (4.13%) and diethoxyethane (2.18%). The effect of crude extract on deterrency was maximal in 1000 μL/L treatment (only 4.66 ±1.05 insects were attracted to treated food) compared to control (12.6 ±0.96) The growth regulatory effect showed that 1600 μL/L treatment variously affected the weight of larvae, pupae and adult (0.48 ±0.003, 2.17 ±0.02 and 1.31 ±0.015, respectively) and finally the ovicidal effect and the number of adults appearing in F1 were similarly affected (38.5 ±1.7 and 33.75 ±2.31), comparing to control (99.25 ±1.727 and 92.5 ±1.35). The present result and previous results on this plant species indicate that it can be a good candidate for controlling stored product insects.
    Źródło:
    Pestycydy; 2008, 1-2; 51-59
    0208-8703
    Pojawia się w:
    Pestycydy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of rock properties on ROP modeling using statistical and intelligent methods: a case study of an oil well in southwest of Iran
    Badanie wpływu właściwości skał na prędkość wiercenia przy zastosowaniu metod statystycznych i inteligentnych: studium przypadku: szyb naftowy w południowo-zachodniej części Iranu
    Autorzy:
    Bezminabadi, S. N.
    Ramezanzadeh, A.
    Jalali, S. M. E.
    Tokhmechi, B.
    Roustaei, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/219768.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    prędkość wiercenia
    właściwości skał
    metoda wielokrotnej regresji nieliniowej
    sztuczne sieci neuronowe
    ROP
    rock properties
    MNR
    ANN
    Opis:
    Rate of penetration (ROP) is one of the key indicators of drilling operation performance. The estimation of ROP in drilling engineering is very important in terms of more accurate assessment of drilling time which affects operation costs. Hence, estimation of a ROP model using operational and environmental parameters is crucial. For this purpose, firstly physical and mechanical properties of rock were derived from well logs. Correlation between the pair data were determined to find influential parameters on ROP. A new ROP model has been developed in one of the Azadegan oil field wells in southwest of Iran. The model has been simulated using Multiple Nonlinear Regression (MNR) and Artificial Neural Network (ANN). By adding the rock properties, the estimation of the models were precisely improved. The results of simulation using MNR and ANN methods showed correlation coefficients of 0.62 and 0.87, respectively. It was concluded that the performance of ANN model in ROP prediction is fairly better than MNR method.
    Prędkość wiercenia jest jednym z podstawowych parametrów charakteryzujących tempo prac wiertniczych. Oszacowanie prędkości wiercenia jest zagadnieniem kluczowym dla inżynierów wiertnictwa, gdyż pozwala na dokładne określenie czasu trwania prac, a co za tym idzie także kosztów operacyjnych. Szacowanie prędkości wiercenia odbywa się na podstawie modelu uwzględniającego parametry pracy oraz parametry środowiskowe. Pierwszy krok obejmuje pozyskanie danych o fizycznych i mechanicznych właściwościach skał na podstawie profilowania geofizycznego otworu. Zastosowano korelację odpowiednich par danych dla pokreślenie wpływu głównych czynników warunkujących prędkość wiercenia. Nowy model obliczania prędkości wiercenia opracowany został w okręgu naftowym Azadegan w południowo-zachodniej części Iranu. Symulacje prowadzono w oparciu o metodę wielokrotnej regresji nieliniowej a także przy wykorzystaniu sztucznych sieci neuronowych. Poprzez dodanie danych o właściwościach skał, model został znacznie udoskonalony. Wyniki symulacji prowadzonych w oparciu o powyższe metody wykazały współczynniki korelacji na poziomie 0.62 i 0.87. Stwierdzono, że metoda wykorzystująca sztuczne sieci neuronowe daje dokładniejsze szacunki prędkości wiercenia niż podejście bazujące wyłącznie na metodzie obliczania regresji nieliniowej
    Źródło:
    Archives of Mining Sciences; 2017, 62, 1; 131-144
    0860-7001
    Pojawia się w:
    Archives of Mining Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Prediction of CEC using fractal parameters by artificial neural networks
    Autorzy:
    Bayat, H.
    Davatgar, N.
    Jalali, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/25675.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    cation exchange capacity
    prediction
    fractal structure
    fractal theory
    particle size distribution
    artificial neural network
    pedotransfer function
    Opis:
    The prediction of cation exchange capacity from readily available soil properties remains a challenge. In this study, firstly, we extended the entire particle size distribution curve from limited soil texture data and, at the second step, calculated the fractal parameters from the particle size distribution curve. Three pedotransfer functions were developed based on soil properties, parameters of particle size distribution curve model and fractal parameters of particle size distribution curve fractal model using the artificial neural networks technique. 1 662 soil samples were collected and separated into eight groups. Particle size distribution curve model parameters were estimated from limited soil texture data by the Skaggs method and fractal parameters were calculated by Bird model. Using particle size distribution curve model parameters and fractal parameters in the pedotransfer functions resulted in improvements of cation exchange capacity predictions. The pedotransfer functions that used fractal parameters as predictors performed better than the those which used particle size distribution curve model parameters. This can be related to the non-linear relationship between cation exchange capacity and fractal parameters. Partitioning the soil samples significantly increased the accuracy and reliability of the pedotransfer functions. Substantial improvement was achieved by utilising fractal parameters in the clusters.
    Źródło:
    International Agrophysics; 2014, 28, 2
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of trypsin modulating oostatic factor (TMOF) on trypsin and chymotrypsin in Glyphodes pyloalis Walker (Lep.: Pyralidae) and Hyphantria cunea Drury (Lep.: Arctiidae)
    Autorzy:
    Ajamhassani, M.
    Jalali Sendi, J.
    Ghadamyary, M.
    Borovsky, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/55071.pdf
    Data publikacji:
    2011
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    trypsin
    modulating oostatic factor
    chymotrypsin
    Glyphodes pyloalis
    Lepidoptera
    Pyralidae
    Hyphantria cunea
    Arctiidae
    peptide hormone
    larva
    biosynthesis
    Opis:
    In the present study, the effect of three concentrations of TMOF (7.5, 15 and 30 μg dissolved in water) on trypsin and chymotrypsin biosynthesis in 4th instar larvae of Glyphodes pyloalis walker and Hyphantria cunea Drury were studied 24 h and 48 h after injecting. Our results indicated that in G. pyloalis, lower concentrations (7.5 and 15 μg) inhibited trypsin biosynthesis at 24 h after injection. (P < 0.0001). TMOF, however, did not significantly affect trypsin biosynthesis at 48 h. In H. cunea, at 48 h after the injection, all concentrations (7.5, 15 and 30 μg per larvae) significantly inhibited trypsin biosynthesis (P < 0.05). Injections of TMOF did not significantly affect chymotrypsin in both insects. Although, in G. pyloalis, chymotrypsin activity decreased about 25% at 48 h after injection.
    Źródło:
    Pestycydy; 2011, 1-4
    0208-8703
    Pojawia się w:
    Pestycydy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermal analysis of Double Stator Switched Reluctance Machine (DSSRM) with and without a squirrel cage rotor
    Autorzy:
    Abbasian, M.
    Jalali, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/140844.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Computational Fluid Dynamics (CFD)
    Finite Element Method (FEM)
    squirrel cage
    double stator
    switched reluctance machine
    thermal analysis
    Opis:
    Double Stator Switched Reluctance Machine (DSSRM) is a novel switched reluctance machine with limited information about its heat distribution and dissipation. This paper presents a two dimensional (2-D) thermal analysis of Double Stator Switched Reluctance Machine (DSSRM) to observe actual heat distribution in the parts of the machine, using Finite Element Method (FEM). Two topologies for the rotor of DSSRM are considered, Non-Squirrel Cage Double Stator Switched Reluctance Machine (NSCDSSRM) and Squirrel Cage Double Stator Switched Reluctance Machine (SC-DSSRM). The heat distribution of these two topologies is analyzed, using Computational Fluid Dynamics (CFD). Finally the results are presented and compared.
    Źródło:
    Archives of Electrical Engineering; 2017, 66, 1; 189-198
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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