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    Wyświetlanie 1-7 z 7
    Tytuł:
    Optimization of electrocoagulation of instant coffee production wastewater using the response surface methodology
    Autorzy:
    Bui, H. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/778797.pdf
    Data publikacji:
    2017
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    coffee production wastewater
    electrocoagulation
    optimization
    surface response method
    Opis:
    The COD removal efficiency from an instant coffee processing wastewater using electrocoagulation was investigated. For this purpose, the response surface methodology was employed, using central composing design to optimize three of the most important operating variables, i.e., electrolysis time, current density and initial pH. The results based upon statistical analysis showed that the quadratic models for COD removal were significant at very low probability value (<0.0001) and high coefficient of determination (R2  = 0.9621) value. The statistical results also indicated that all the three variables and the interaction between initial pH and electrolysis time were significant on COD abatement. The maximum predicted COD removal using the response function reached 93.3% with electrolysis time of 10 min, current density of 108.3 A/m2  and initial pH of 7.0, respectively. The removal efficiency value was agreed well with the experimental value of COD removal (90.4%) under the optimum conditions.
    Źródło:
    Polish Journal of Chemical Technology; 2017, 19, 2; 67-71
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Isolation and characterization of a DREB homolog gene from a local drought-tolerant maize cultivar
    Autorzy:
    Huynh, T.T.H.
    Nguyen, T.L.
    Luu, H.L.
    Nguyen, H.H.
    Le, H.D.
    Bui, M.M.
    Pham, T.H.
    Doan, T.B.T.
    Le, T.T.H.
    Ha, H.H.
    Nong, V.H.
    Powiązania:
    https://bibliotekanauki.pl/articles/2117848.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    drought tolerance
    maize
    transformation
    DrEB gene
    Tevang-1 cultivar
    Opis:
    Clarifying the genetic background of the drought-tolerance trait is a crucial task that may help to improve plant performance under stress by a genetic engineering approach. dehydration-responsive element-binding protein (dREB) is a transcription factor family which modulates many stress-responsive genes. In this study, we isolated a DrEB homolog gene named ZmDrEBtv from Zea mays var. Tevang-1. Using bioinformatic tools, a number of Indels and SNPs in ZmDrEBtv sequence different from the reference accession were identified. In addition, based on deduced protein sequence similarity, ZmdREBtv was assigned to transcription factor dREB2 class as featured by a conserved dNa binding domain – aP2. The ZmDrEBtv construct under thecontrol of the rd29a promoter was transformed into a drought-sensitive maize plant, K7 line. The transgenic plants were assessed with reference to molecular and phenotypic characteristics related to the drought-tolenrance trait. The results proved that the maize plants carrying ZmDrEBtv gene showed enhanced tolerance and better performance to the water-deficit environment at different stages, compared to the wild-type plants.
    Źródło:
    Acta Biologica Cracoviensia. Series Botanica; 2019, 61, 2; 13-24
    0001-5296
    Pojawia się w:
    Acta Biologica Cracoviensia. Series Botanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hemifacial asymmetries in age perception: the left cheek looks older for females, but not males
    Autorzy:
    Lindell, Annukka K
    Cianchetta, Rhiannon O
    Azim, Sana M
    Freeman, Cody G
    de Oliveira, Nicole C
    Saban, Sakire
    Messina, Julia L
    Wilson, Kira Elise
    Egan, Alanna
    Caspar, Megan D
    Grey, Emma J
    McDonald, Bryce A
    Croxford, Kylie N
    Bui, Thu Trang
    Aiello, Ashley A
    Heywood-Smith, Victoria M
    Kidd, Andrew J
    Stanley, Shenae C
    Wakeling, Alarna
    Hoggan, Stephanie A.L
    Morriss, Ashleigh S
    Trinh, Thi Phuong Mai
    Thai-Nguyen, Hong
    Fonte, Melissa
    Agolli, Franceska
    Powiązania:
    https://bibliotekanauki.pl/articles/2106020.pdf
    Data publikacji:
    2019-12-18
    Wydawca:
    Fundacja Edukacji Medycznej, Promocji Zdrowia, Sztuki i Kultury Ars Medica
    Tematy:
    emotion
    asymmetry
    hemisphere
    laterality
    age
    Opis:
    The left hemiface expresses emotion more intensely than the right. Because emotional expressions contract the facial muscles and wrinkle the skin, theoretically the left hemiface’s greater expressivity should prompt more pronounced expression lines and wrinkles on the left than right side of the face. As wrinkles are the most salient age cue, we investigated whether the left hemiface consequently appears older than the right. Two hundred and sixty participants (F=148; M=112) viewed booklets containing pairs of left-left and right-right chimeric faces of eight models (M=F). For each trial participants were asked to make a two alternative forced choice response indicating which image looked older. Results confirmed a left cheek bias, with participants more likely to select left-left than right-right chimeras. Whilst participant gender did not influence perceptions, model gender predicted cheek selections: responses to female models drive the overall left cheek bias. The left cheek (56.8%) appeared older than the right cheek (43.2%) for female models, whereas there was little difference in perceived age between male models' left (50.8%) and right (49.2%) cheeks. Given that youth influences perceptions of female beauty, these findings complement previous research and offer a potential explanation for why the left side of females’ faces are judged less attractive: the right cheek appears younger.
    Źródło:
    Acta Neuropsychologica; 2019, 17(4); 417-426
    1730-7503
    2084-4298
    Pojawia się w:
    Acta Neuropsychologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determination of dissolved concentrations of polycyclic aromatic hydrocarbons in river
    Autorzy:
    Bui, M.N.
    Powiązania:
    https://bibliotekanauki.pl/articles/10968.pdf
    Data publikacji:
    2015
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Opis:
    This study shows the sensitivity of using silicone rubber passive sampler(SR-PS) andgas chromatography with mass spectrometer (GC-MS) detection for monitoring and identification of polycyclic aromatic hydrocarbons in surface water systems. The analysis was performed for eighteen PAHs compounds after pre-concentration using Soxhlet extraction method. By comparison, a total of 13 PAHs were detected in the spot water samples, of which none was quantifiable. The freely dissolved PAH concentrations were found to range from 0.17 ng/L to 0.76 ng/L at Ugieriver. The use of fluorine d10 as Performance reference compound(PRC) gives a sampling rates of 8.14 (L/day) for silicone rubber passive samplers. Analysis of PAHs concentrations suggest the contaminants are mainly from pyrolytic sources. Overall it can be concluded that SR-PS are viable alternatives in the environmental monitoring of PAHs.
    Źródło:
    International Letters of Natural Sciences; 2015, 48
    2300-9675
    Pojawia się w:
    International Letters of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Adsorption and Desorption Characteristics and Purification of Isoflavones from Crude Soybean Extract Using Macroporous Resins
    Autorzy:
    Tran, Thi N.
    Bui, Xuan V.
    Loan, Nguyen T.
    Anh, Nguyen H.
    Le, Truong D.
    Truong, Thi M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2051036.pdf
    Data publikacji:
    2022-06-09
    Wydawca:
    Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
    Tematy:
    soybean isoflavones
    macroporous resin
    purification
    adsorption and desorption characteristics
    daidzin
    genistin
    Opis:
    Isoflavones in soybean have been well-known with many health-promoting effects on humans. This study aimed to purify isoflavones from the crude soybean extract by the static adsorption/desorption process on macroporous resins. A screening test of four commercial resins: D101, AB-8, Amberlite(R) XAD4, and Diaion HP20 according to their adsorption/desorption characteristic for isoflavones was investigated. All four resins showed high adsorption and desorption characteristics in which D101 resin was chosen as the most suitable resin for purifying isoflavones. Compositional analysis showed that daidzin and genistin were the main isoflavones in the crude soybean extract. The adsorption isotherms data of total isoflavones, daidzin, and genistin fitted well with the Langmuir model with R2>0.98. The dynamic adsorption conditions for the purification process of isoflavones on the D101 resin-packed column were selected at the bed volume (BV) of 200 mL, feed volume of 3.75 BV, and flow rate of 1.5 BV/h. The dynamic desorption was carried out with the elution solution of 70% (v/v) ethanol, elution volume of 2.5 BV, and flow rate of 1 BV/h. The total isoflavone content in the purified extract was 8.70-fold higher than its initial content in the crude soybean extract with a recovery yield of nearly 80%. The study results reveal a strong possibility for large-scale production of isoflavones for further application in functional food products or pharmaceutical products.
    Źródło:
    Polish Journal of Food and Nutrition Sciences; 2022, 72, 2; 183-192
    1230-0322
    2083-6007
    Pojawia się w:
    Polish Journal of Food and Nutrition Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A maximal function characterization of weighted Besov-Lipschitz and Triebel-Lizorkin spaces.
    Autorzy:
    -Q. Bui, H.
    Paluszyński, M.
    Taibleson, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1287511.pdf
    Data publikacji:
    1996
    Wydawca:
    Polska Akademia Nauk. Instytut Matematyczny PAN
    Tematy:
    Besov-Lipschitz space
    Triebel-Lizorkin space
    Littlewood-Paley function
    Calderón representation theorem
    $A_∞$ weight
    Opis:
    We give characterizations of weighted Besov-Lipschitz and Triebel-Lizorkin spaces with $A_∞$ weights via a smooth kernel which satisfies "minimal" moment and Tauberian conditions. The results are stated in terms of the mixed norm of a certain maximal function of a distribution in these weighted spaces.
    Źródło:
    Studia Mathematica; 1996, 119, 3; 219-246
    0039-3223
    Pojawia się w:
    Studia Mathematica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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