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    Wyświetlanie 1-12 z 12
    Tytuł:
    Simulation of CO2 enrichment and climate change impacts on soybean production
    Autorzy:
    Fu, T.
    Ha, B.
    Ko, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/25325.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    simulation
    carbon dioxide
    climate change
    soybean
    crop model
    Źródło:
    International Agrophysics; 2016, 30, 1
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Lower Permian bryozoans from southern and central Spitsbergen, Svalbard
    Autorzy:
    Nakrem, H.A.
    Blazejowski, B.
    Gazdzicki, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/21431.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Lower Permian
    Permian
    bryozoan
    Spitsbergen
    Svalbard
    paleontology
    Bryozoa
    Arctic
    Treskelodden Formation
    Wordiekammen Formation
    new genus
    Toulapora
    new species
    Ascopora birkenmajeri
    taxonomy
    Opis:
    Bryozoans from the Lower Permian Treskelodden and Wordiekammen formations of southern and central Spitsbergen respectively, Svalbard, have been studied. Twenty species are identified, including one new genus, Toulapora gen. nov., with Toulapora svalbardense as type species and one new species, Ascopora birkenmajeri sp. nov. The taxonomic composition is typical Lower Permian, with species in common with Timan−Pechora and the Urals (Russia) and Ellesmere Island (the Canadian Arctic). Growth habits reflect a moderately to deeper shelf environment.
    Źródło:
    Acta Palaeontologica Polonica; 2009, 54, 4
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Field Evaluation of Imidacloprid and Thiamethoxam Against Sucking Insects and Their Side Effects on Soil Fauna
    Autorzy:
    El-Naggar, J.B.
    Zidan, N.E-H.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/65746.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    This work was carried out at Sakha Agriculture Research Station, Kafr El-Sheikh, Egypt during the 2010 and 2011 cotton growing seasons to evaluate the effectiveness of imidacloprid and thiamethoxam, used separately as seed treatments and foliar applications at the recommended rate against the sucking insects: thrips, thrips tabaci (lind), jassid, Empoasca spp., whitefly, Bemicia tabaci, and cotton aphid, Aphis gossypii (Glover.). The side effects of both insecticides on soil fauna was investigated as well. The experimental results showed the following trends: Seed treatment with imidacloprid and thiamethoxam protected cotton seedlings from thrips for at least 6 weeks from the onset of seed planting. Also, both insecticides induced a fast initial effect (after one week of treatment) on whitefly (immature stages). This fast initial effect then gradually decreased to reach a moderate effect according to the general mean of percent reduction. The two tested insecticides exhibited a moderate initial reduction in the population of whitefly (mature stages) and jassids during the two seasons and then this gradually decreased. Imidacloprid had a better efficiency against this sap sucking pest than thiamethoxam. Treatments with imidacloprid and thiamethoxam as foliar applications were highly effective against aphids, up to 14 days in the case of jassids, while the effect was moderate on the whitefly population (mature and immature stages). Imidacloprid had more initial and residual effect than thiamethoxam against jassids. For all soil arthropod groups implicated in this investigation, the used pesticide and depth, significantly affected their mean numbers. The least number of soil arthropods was sampled from the 10-20 cm layer treated with pesticides compared with the 0-10 cm layer. The control plot at both depths recorded the highest number of soil arthropods sampled. Collembola was most abundant while Psocoptera, Oribatida, Actinedida, and Gamasida were least abundant. Pesticide application increased the overall Collembola density compared to the control plots, while it decreased overall Psocoptera, Oribatida, Actinedida, and Gamasida density compared to the control plots. In case of the foliar treatment, there was a reduction in the mean number of examined micro-arthropods either under plants or between plants, in both depths. The reduction in the number of soil arthropods was significantly more in the 0-10 layer. The reduction was more significant between plants than under plants. The most influenced micro-arthropod was Oribatida. The results also revealed that imidacloprid had more adverse effects on soil fauna than thiamethoxam.
    Źródło:
    Journal of Plant Protection Research; 2013, 53, 4
    1427-4345
    Pojawia się w:
    Journal of Plant Protection Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Combined Effect of Zr and Si on Isothermal Oxidation of Ti
    Autorzy:
    Ha, S.-H.
    Kim, B.-H.
    Yoon, Y.-O.
    Lim, H.-K.
    Kim, S. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/353260.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Ti
    Zr
    Si
    silicide
    oxidation
    Opis:
    In this study, the combined effect of Zr and Si on isothermal oxidation of Ti for 25 and 50h at 820°C, which is the temperature related to exhaust valves operation, was investigated. Si addition into Ti-5mass%Zr alloy led to a distribution of silicide Ti5Si3 phase formed by a eutectic reaction. The Ti sample containing only Zr showed more retarded oxidation rate than Ti-6Al-4V, the most prevalent Ti alloy, at the same condition. However, while a simultaneous addition of Zr and Si resulted in greater increase of oxidation resistance. The oxide layer formed after the addition of Zr and Si comprised TiO2, ZrO2, and SiO2.
    Źródło:
    Archives of Metallurgy and Materials; 2018, 63, 3; 1493-1495
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effects of different pruning treatments on the growth, fruit quality and yield of 'Hacihaliloglu' apricot
    Wpływ różnych zabiegów cięcia na wzrost, jakość i plon owoców moreli ‘Hacihaliloglu’
    Autorzy:
    Naim Demirtas, M.
    Bolat, I.
    Ercisli, S.
    Ikinci, A.
    Olmez, H.A.
    Sahin, M.
    Altindag, M.
    Celik, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/11541916.pdf
    Data publikacji:
    2010
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Tematy:
    pruning treatment
    plant cultivar
    plant growth
    fruit quality
    fruit yield
    Hacihaliloglu cultivar
    apricot
    Prunus armeniaca
    summer pruning
    winter pruning
    pomology
    Turkey
    Opis:
    This study was conducted in Malatya, between 1999 and 2003, and the region's most important dried apricot variety, Hacihaliloglu was used as material. In the study, the effect of 5 different combined or alone pruning treatments on the growth, fruit quality and yield characteristics were determined in comparison with non-pruned trees. Pruning treatments in different periods did not statistically affect phenological features and fruit dimensions but strongly affected total soluble solid and fruit firmness of Hacihaliloglu apricot cultivar. The highest average yield considering trunk cross-sectional area was obtained as 0.34 kg·cm-2 from pre-harvest summer pruning treatment and the highest share of flower bud was observed as 68.29% in pre-harvest summer+winter pruning treatment. Pruning applications significantly affected both shoot diameter and length. The highest shoot diameter and length were obtained from pre-harvest summer+winter pruning application as 8.52 mm and 77.84 cm, respectively. The highest leaf area was determined as 39.43 cm2 in post harvest pruning treatment.
    Badanie przeprowadzono w miejscowości Malatya w latach 1999–2003 na najważniejszej w regionie odmianie moreli do suszenia, Hacihaliloglu. W badaniu określono wpływ 5 różnych zabiegów cięcia na wzrost, jakość owoców oraz plonowanie w porównaniu z drzewami nieprzycinanymi. Zabiegi cięcia w różnych okresach nie wpłynęły w sposób istotny na cechy fenologiczne ani rozmiary owoców, natomiast wywarły silny wpływ na zawartość ekstraktu w soku oraz jędrność owoców moreli odmiany Hacihaliloglu. Najwyższy średni plon, 0,34 kg·cm-2 przy uwzględnieniu powierzchni przekroju poprzecznego pnia osiągnięto przy letnim przycinaniu po zbiorze owoców, a największy udział pąków – 68,29%, – zaobserwowano przy przedzbiorczym zabiegu cięcia lato+zima. Zastosowanie cięcia istotnie wpłynęło zarówno na średnicę pędów jak i ich długość. Największą średnicę i długość pędów, odpowiednio 8,52 mm i 77,84 cm, otrzymano stosując przedzbiorcze cięcie lato+zima. Największą powierzchnię liścia, 39,43 cm2 uzyskano przy pozbiorczym zabiegu cięcia.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2010, 09, 4; 183-192
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Development of new drought tolerant breeding lines for Vietnam using marker-assisted backcrossing
    Autorzy:
    Thu Ha, P.T.
    Khang, D.T.
    Tuyen, P.T.
    Toan, T.B.
    Huong, N.N.
    Lang, N.T.
    Buu, B.C.
    Xuan, T.D.
    Powiązania:
    https://bibliotekanauki.pl/articles/11519.pdf
    Data publikacji:
    2016
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Źródło:
    International Letters of Natural Sciences; 2016, 59
    2300-9675
    Pojawia się w:
    International Letters of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Identifying the grain chalkiness gene using molecular marker techniques in rice (Oryza sativa L.)
    Autorzy:
    Thi Lang, N.
    Ho Truc Giang, P.
    Thi Thu Ha, P.
    Bao Toan, T.
    Anh Phuong, T.
    Chi Buu, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/11679.pdf
    Data publikacji:
    2017
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Źródło:
    International Letters of Natural Sciences; 2017, 63
    2300-9675
    Pojawia się w:
    International Letters of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study on physical-chemical characters and heritability for yield components in rice (Oryza sativa L.)
    Autorzy:
    Ha, P.T.T.
    Khang, D.T.
    Tuyen, P.T.
    Minh, T.N.
    Xuan, T.D.
    Lang, N.T.
    Buu, B.C.
    Powiązania:
    https://bibliotekanauki.pl/articles/11628.pdf
    Data publikacji:
    2016
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Opis:
    Present study was performed to analysis both physical and chemical properties of rice germplasm and heritability for yield components in combinations. A total of 44 lines/varieties obtained from Cuu Long Rice Research Institute genebank, and 30 F1 generation combinations were evaluated. The results showed that the rice line IR79008-B-11-B-B-1 showed overall good physical characters (head rice, grain length, grain width, chalkiness). In terms of chemical characteristics, three varieties IR75499-73-1-B, OM6162, and OM4900 were found to have good amylose content, gel consistency, protein content, gelatinization temperature, and aroma. A very notable finding was that the cross between OM6162/SwarnaSub1 that low amylose content (20.2%), high gel consistency (78.2 mm), high protein content (8.1%), appropriate gelatinization temperature (scale 5), low chalkiness (level 0), high heritability (0.9) for grain yield trait/cluster, and (0.84) for the number of panicles/cluster. Moreover these characters consist of plant height, panicle length, number of panicles/cluster, number of filled grains/panicle, number of unfilled/panicle, and grain yield/ cluster showed moderate to high heritability of mean for combination OM6162/SwarnaSub1. The results suggest that the grain yield trait/cluster and the number of panicles/cluster are important yield contributing traits to rice breeders for selecting ideal combinations for higher yield and quality of next generations.
    Źródło:
    International Letters of Natural Sciences; 2016, 57
    2300-9675
    Pojawia się w:
    International Letters of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Correlation among agro-morphological variation and genetic diversity of rice (Oryza sativa L.) under drought stress
    Autorzy:
    Thu Ha, P.T.
    Khang, D.T.
    Tuyen, P.T.
    Minh, L.T.
    Minh, T.N.
    Thi Lang, N.
    Buu, B.C.
    Xuan, T.D.
    Powiązania:
    https://bibliotekanauki.pl/articles/11160.pdf
    Data publikacji:
    2016
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Opis:
    In this study, the correlation coefficients among agro-morphological variation, genetic diversity, and drought tolerance in 44 rice cultivars were analyzed. The drought tolerance at seeding stage (DTS) was significantly proportional to drought tolerance at vegetative stage (DTV) (r = 0.60). In addition, DTS and DTV had strong significant positive correlation to leaf roll (r = 0.87 and 0.54, respectively). Means of unfilled grains and tilling per panicle were proportionally correlated to DTS (r = 0.22 and 0.25, respectively), and DTV (r = 0.20 and 0.36, respectively). However, weight of 1000 grains and filled grains were recorded no correlation to DTS and DTV. At a homologous coefficient of 16.85 integrated from cluster analysis of agro-morphological, quantitative characteristics and drought tolerant scores, the rice cultivars were divided into five groups. Maximum polymorphic information content (PIC) values were detected in three markers including RM11125, RM21, and RM5629, which were from 0.78 to 0.79. Cluster analysis of microsatellite markers revealed that by a genetic distance of 0.63, the rice varieties were separated into three clusters. The results provide valuable information for rice breeders to select donors in breeding rice integrated with drought tolerance and good agronomic characteristics.
    Źródło:
    International Letters of Natural Sciences; 2016, 58
    2300-9675
    Pojawia się w:
    International Letters of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Warm Tensile Deformation Behavior and Constitutive Equation of Supersaturated Solid-Solutionized Al-9Mg Extruded Alloy
    Autorzy:
    Yang, Seung Y.
    Kim, Bong H.
    Lee, Da B.
    Choi, Kweon H.
    Kim, Nam S.
    Ha, Seong H.
    Yoon, Young O.
    Lim, Hyun K.
    Kim, Shae
    Kim, Young J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2048882.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    aluminum alloy
    Al-9Mg alloy
    tensile test
    constitutive equation
    Opis:
    In this paper, as a purpose to apply the supersaturated solid-solutionized Al-9Mg alloy to the structural sheet parts of automotive, tensile tests were conducted under the various conditions and a constitutive equation was derived from the tensile test results. Al-9Mg alloy was produced using a special Mg master alloy containing Al2Ca during the casting process and extruded into the sheet. In order to study the deformation behavior of Al-9Mg alloy in warm temperature forming environments, tensile tests were conducted under the temperature of 373 K-573 K and the strain rate of 0.001/s~0.1/s. in addition, by using the raw data obtained from tensile tests, a constitutive equation of the Al-9Mg alloy was derived for predicting the optimized condition of the hot stamping process. Al-9Mg alloy showed uncommon deformation behavior at the 373 K and 473 K temperature conditions. The calculated curves from the constitutive equation well-matched with the measured curves from the experiments particularly under the low temperature and high strain rate conditions.
    Źródło:
    Archives of Metallurgy and Materials; 2021, 66, 4; 1013-1018
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microstructure and Mechanical Properties of Hot-deformed AlMg4 Alloys with the Variations of Mn, Fe, and Si Contents
    Autorzy:
    Lee, Da B.
    Kim, Bong H.
    Choi, Kweon H.
    Yang, Seung Y.
    Kim, Nam S.
    Ha, Seong H.
    Yoon, Young O.
    Lim, Hyun K.
    Kim, Shae
    Hyun, Soong K..
    Powiązania:
    https://bibliotekanauki.pl/articles/351603.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Al-Mg alloy
    intermetallic compounds
    homogenization
    hot-rolling
    microstructure
    Opis:
    This paper aims to investigate the microstructural evolution and mechanical properties of hot-deformed AlMg4 alloys with Mn, Fe, and Si as the main impurities. For this purpose, solidification behavior and microstructural evolution during hot-rolling and heat-treatment processes are investigated by using theoretical calculations and experimental characterization. The crystallization and morphological transformation of intermetallic Al3 Fe, Al6 Mn, and Mg2 Si phases are revealed and discussed in terms of the variation in chemical composition. Following a homogenization heat-treatment, the effect of heat treatment on the intermetallic compounds is also investigated after hot-rolling. It was revealed that the Mg2 Si phase can be broken into small particles and spherodized more easily than the Al3 Fe intermetallic phase during the hot-rolling process. For the Mn containing alloys, both yield and ultimate tensile strength of the hot-rolled alloys increased from 270 to 296 MPa while elongation decreased from 17 to 13%, which can be attributed to Mn-containing intermetallic as well as dispersoid.
    Źródło:
    Archives of Metallurgy and Materials; 2020, 65, 4; 1255-1259
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    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
      Wyświetlanie 1-12 z 12

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