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    Wyświetlanie 1-10 z 10
    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:
    Application of Third Generation Synchrotron Source to Studies of Non-Crystalline Materials: In-Se Amorphous Films
    Autorzy:
    Burian, A.
    Jabłońska, A.
    Burian, A. M.
    Le Bolloc'h, D.
    Metzger, H.
    Proux, O.
    Hazemann, J. L.
    Mosset, A.
    Raoux, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/2030649.pdf
    Data publikacji:
    2002-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.10.-i
    61.43.Dq
    Opis:
    The local structure of vacuum evaporated In-Se amorphous films, containing 50, 60, and 66 at.% Se, was studied using differential anomalous X-ray scattering and extended X-ray absorption fine structure. Both intensity and absorption spectra were measured in the vicinity of the absorption K-edge of Se. The differential anomalous X-ray scattering data were converted to real space by the inverse Fourier transform yielding the differential radial distribution functions. The obtained results provide evidence for the presence of Se-In spatial correlations for In$\text{}_{50}$Se$\text{}_{50}$ and Se-In and Se-Se correlations for In$\text{}_{40}$Se$\text{}_{60}$ and In$\text{}_{34}$Se$\text{}_{66}$ within the first coordination sphere.
    Źródło:
    Acta Physica Polonica A; 2002, 101, 5; 701-708
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Addendum to “Sea spray aerosol flux estimation based on long-term variation of wave statistics”: estimation based on long-term variation of wind statistics
    Autorzy:
    Myrhaug, D.
    Wang, H.
    Holmedal, L.E.
    Powiązania:
    https://bibliotekanauki.pl/articles/48948.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    sea spray
    aerosol flux
    wind speed
    long-term variation
    North Sea
    Źródło:
    Oceanologia; 2016, 58, 2
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sea spray aerosol flux estimation based on long-term variation of wave statistics
    Autorzy:
    Myrhaug, D.
    Wang, H.
    Holmedal, L.E.
    Powiązania:
    https://bibliotekanauki.pl/articles/47632.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    sea spray
    aerosol flux
    whitecap
    wave height
    long-term variation
    wave statistics
    Źródło:
    Oceanologia; 2015, 57, 3
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Addendum to “Stokes transport in layers in the water column based on long-term wind statistics: assessment using long-term wave statistics”
    Autorzy:
    Myrhaug, D.
    Wang, H.
    Holmedal, L.E.
    Powiązania:
    https://bibliotekanauki.pl/articles/47811.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    surface gravity wave
    water transport velocity
    Stokes transport
    water column
    wind statistics
    long-term wave statisticsstatistic
    Źródło:
    Oceanologia; 2019, 61, 4
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment of sequence polymorphism and gene expression of OsSOS1 gene in two contrasting rice genotypes
    Autorzy:
    Do, P.T.
    Pham, H.Q.
    Nguyen, H.M.
    Le, D.H.
    Powiązania:
    https://bibliotekanauki.pl/articles/19670.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Źródło:
    Acta Biologica Cracoviensia. Series Botanica; 2018, 60, 1
    0001-5296
    Pojawia się w:
    Acta Biologica Cracoviensia. Series Botanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Short-term survival of ammonites in New Jersey after the end-Cretaceous bolide impact
    Autorzy:
    Landman, N.H.
    Garb, M.P.
    Rovelli, R.
    Ebel, D.S.
    Edwards, L.E.
    Powiązania:
    https://bibliotekanauki.pl/articles/22198.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    short-term survival
    ammonite
    New Jersey
    Cretaceous
    bolide impact
    Ammonoidea
    biostratigraphy
    extinction
    Paleogene
    boundary
    Opis:
    A section containing the Cretaceous/Paleogene (= Cretaceous/Tertiary) boundary in Monmouth County, New Jersey, preserves a record of ammonites extending from the end of the Cretaceous into possibly the beginning of the Danian. The section includes the upper part of the Tinton Formation and lower part of the Hornerstown Formation. The top of the Tinton Formation is represented by a richly fossiliferous unit (the Pinna Layer) that contains many bivalves in life position as well as ammonite jaws preserved inside body chambers. Ammonites include Pachydiscus (Neodesmoceras) mokotibensis, Sphenodiscus lobatus, Eubaculites carinatus, E. latecarinatus, Discoscaphites iris, D. sphaeroidalis, D. minardi, and D. jerseyensis. The Pinna Layer probably represents a relatively short interval of time lasting tens to hundreds of years; it is conformably overlain by the Burrowed Unit, which contains a single fragment of Discoscaphites sp. and several fragments of E. latecarinatus, as well as several isolated specimens of ammonite jaws including two of Eubaculites. Examination of the mode of preservation of the ammonites and jaws suggests that they were fossilized during deposition of the Burrowed Unit and were not reworked from older deposits. Based on the ammonites and dinoflagellates in the Pinna Layer and the Burrowed Unit, these strata traditionally would be assigned to the uppermost Maastrichtian, corresponding to calcareous nannofossil Subzone CC26b. However, a weak iridium anomaly (500–600 pg/g) is present at the base of the Pinna Layer, which presumably represents the record of the bolide impact. Correlation with the iridium layer at the Global Stratotype Section and Point at El Kef, Tunisia, would, therefore, imply that these assemblages are actually Danian, provided that the iridium anomaly is in place and the ammonites and dinoflagellates are not reworked. If the iridium anomaly is in place, or even if it has migrated downward from the top of the Pinna Layer, the ammonites would have survived the impact at this site for a brief interval of time lasting from a few days to hundreds of years.
    Źródło:
    Acta Palaeontologica Polonica; 2012, 57, 4
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    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:
    Cultural characteristics and cordycepin production of some Cordyceps militaris strains under artificial cultivation conditions
    Autorzy:
    Nguyen, L.T.
    Le, V.V.
    Nguyen, B.T.T.
    Ngo, N.X.
    Nguyen, H.T.T.
    Nguyen, Q.D.
    Mulla, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/2096987.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Cordyceps militaris
    mycelial
    fruiting body
    cordycepin
    Opis:
    Cordyceps militaris, a precious medical mushroom, has attracted wide attention in industrial fields. Currently, the degeneration phenomenon of C. militaris commercial strains is amongst the major challenges for cultivation at the industrial scale. The screening for superior strains with high yield and medicinal value is considered a realistic approach to overcome degeneration problems. In the present study, the mycelial growth, primordia formation, yield performance, and cordycepin content of five strains (DT1, DT2, DT3, DT4, and DT5) under artificial cultivation conditions were investigated. All strains showed mycelial growth on SDAY and liquid medium. The strains were successfully cultivated in brown rice medium and required 18 (strain DT3) to 25 days (strain DT5) to form primordia. Additionally, morphological characteristics of fruiting bodies varied among the strains. Strains DT4 and DT3 exhibited the highest fruiting body length with 74.23 ± 5.13 mm and 72.63 ± 2.62 mm, respectively whereas the highest diameter was recorded for strains DT1 (4.05 ± 0.18 mm) and DT2 (3.63 ± 0.12 mm). Of note, among the investigated strains, strain DT3 exhibited the highest biological efficiency (8.95 ± 0.07%) and cordycepin content (1.68 mg/g). Therefore, strain DT3 could be selected as a potential strain for commercial cultivation.
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2020, 101, 2; 135-145
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    III-Nitride Nanostructures for Infrared Optoelectronics
    Autorzy:
    Monroy, E.
    Guillot, F.
    Leconte, S.
    Bellet-Amalric, E.
    Nevou, L.
    Doyennette, L.
    Tchernycheva, M.
    Julien, F. H.
    Baumann, E.
    Giorgetta, F.
    Hofstetter, D.
    Dang, Le Si
    Powiązania:
    https://bibliotekanauki.pl/articles/2046980.pdf
    Data publikacji:
    2006-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    73.21.Fg
    78.67.De
    85.60.Gz
    85.35.Be
    81.15.Hi
    81.07.St
    Opis:
    Thanks to their large conduction band offset (~1.8 eV for the GaN/AlN system) and subpicosecond intersubband scattering rates, III-nitride heterostructures in the form of quantum wells or quantum dots are excellent candidates for high-speed unipolar devices operating at optical-fiber telecommunication wavelengths, and relying on the quantum confinement of electrons. In this work, we present the plasma-assisted molecular-beam epitaxial growth of quantum well infrared photodetector structures. The growth of Si-doped GaN/AlN multiple quantum well structures is optimized by controlling substrate temperature, metal excess and growth interruptions. Structural characterization confirms a reduction of the interface roughness to the monolayer scale. P-polarized intersubband absorption peaks covering the 1.33-1.91μm wavelength range are measured on samples with quantum well thickness varying from 1 to 2.5 nm. Complete intersubband photodetectors have been grown on conductive AlGaN claddings, the Al mole fraction of the cladding matching the average Al content of the active region. Photovoltage measurements reveal a narrow (~90 meV) detection peak at 1.39μm at room temperature.
    Źródło:
    Acta Physica Polonica A; 2006, 110, 3; 295-301
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-10 z 10

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