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    TitleAssessment of the mass and surface area of the scots pine (Pinus sylvestris L.) needles
    Author infoMonika Sporek, Kazimierz Sporek ... [et al.]
    Author Sporek Monika (20%)
    Co-authors Sporek Kazimierz (20%)
    Stebila Ján 1979- (15%) UMBFP07 - Katedra techniky a technológií
    Kučerka Martin 1980- (15%) UMBFP07 - Katedra techniky a technológií
    Kminiak Richard (15%)
    Lubis Muhammad Adly Rahandi (15%)
    Source document Applied Sciences. Vol. 12, no. 16 (2022), pp. [1-13]. - Basel : Multidisciplinary Digital Publishing Institute, 2022
    Keywords ihly   borovica lesná (Pinus Sylvestris L.)   laboratórne merania  
    Form. Descr.články - journal articles
    LanguageEnglish
    CountrySwitzerland
    AnnotationThe assessment of the surface area of all leaves from a tree crown is regarded as one of the key parameters in scaling ecophysiological processes, such as growth, carbon budget, and water management. The purpose of this study was to investigate the variation of the mass and surface area of Scots pine needles, obtained from trees growing in the same habitat conditions but at different stock densities, therefore occupying different biosocial positions. The mass of needles and the leaf area index (LAI) were determined for an even-aged 33-year-old Scots pine stand located at a fresh mixed coniferous forest site in southwest Poland (50 320 N; 17 420 E). The needles, collected from all the sample trees, were subjected to a biometric analysis to determine the total mass of needles from each tree, the mass of 1000 needle pairs, the number of needles per crown, and the needle length distribution. Based on the actual measurements, we derived allometric equations for finding the fresh mass (FMN) and the surface area of the needles (SN), using the diameter at breast height (DBH) as an independent variable. The relationships between the mass of the needles and the DBH were significant (p < 0.0001), and so were those between the surface area of the needles and the DBH (p < 0.001). The fresh mass of needles for the tree stands varied from 6458 kg ha􀀀1 to 11,102 kg ha􀀀1. The LAI was in the range of 3.2 to 5.4 m2 m􀀀2. The mean value of the LAI for the Scots pine stand was 4 m2 m􀀀2. Further studies are required and more algorithms need to be developed for the quantitative assessment of the LAI in Scots pine trees, using a larger number of sample trees with more varied biometric features.
    URLLink na zdrojový dokument
    Public work category ADC
    No. of Archival Copy52018
    Repercussion category WARCHOLINSKI, Bogdan - GILEWICZ, Adam. Surface engineering of woodworking tools, a review. In Applied sciences (Basel). ISSN 2076-3417, 2022, vol. 12, no. 20, pp. 1-19.
    SAPUTRA, Suroto Hadi - FERNANDES, Andrian - MAHARANI, Rizki. Effect of combustion method on the yield, specific gravity, and color of oleoresin of Dipterocarpus grandiflorus. In AIP conference proceedings : the second international conference of lignocellulose : 2nd ICONLIG, Bogor, 24th-25th November 2022 [online]. 2023, vol. 2973, no. 1, pp. 1-7 [cit. 2024-04-15]. ISSN 1551-7616. Dostupné na: https://doi.org/10.1063/5.0184803
    Catal.org.BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici
    Databasexpca - PUBLIKAČNÁ ČINNOSŤ
    ReferencesPERIODIKÁ-Súborný záznam periodika
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    TitleDirect reactions with pion production in nucleus-nucleus collisions
    Author infoD. N. Voskresenskii, E. E. Kolomeitsev
    Author Voskresensky Dmitri (50%)
    Co-authors Kolomeitsev Evgeni E. 1970- (50%)
    Source document Physics of Atomic Nuclei. Vol. 56, no. 2 (1993), pp. 252-259. - New York : Pleiades Publishing, 1993
    Keywords Pion-production   nucleus-nucleus collisions  
    Form. Descr.články - journal articles
    LanguageEnglish
    CountryUnited States of America
    AnnotationVarious processes of pion production in nuclear matter at characteristic temperatures T much less than m(pi) are analyzed. It is shown that the pions are produced mainly in NN --> NN(pi) reactions. Taking into account the modification of the NN interaction in nucelar matter, probabilities and differential cross sections of production of pi- mesons in direct NN --> NNpi- reactions are calculated. It is shown that at incident-pion momenta q approximately 2m(pi) processes with pion production via DELTA-resonance intermediate states dominate. From a comparison of the results of the calculation with experimental data on pion production in nucleus-nucleus collisions it is concluded that piN absorption is strong and increases with increasing temperature and density of the nuclear matter. At the initial stage of development of the nuclear fireball the pions are confined inside the system at practically all momenta. Soft (q less-than-or-similar-to m(pi)) pions are emitted at the intermediate stage of expansion of the nuclear fireball, and harder pions are released together with nucleons at the final stage of breakup of the fireball.
    URLLink do databázy WoS
    Public work category ADE
    No. of Archival Copy25471
    Catal.org.BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici
    Databasexpca - PUBLIKAČNÁ ČINNOSŤ
    ReferencesPERIODIKÁ-Súborný záznam periodika
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