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Wyświetlanie 1-4 z 4
Tytuł:
Theoretical analysis of a hollow laser beam transmitting in an off-axis Cassegrain optical antenna system
Autorzy:
Mi, C
Jiang, P
Yang, H.
Ke, S
Li, B
Liu, J.
Powiązania:
https://bibliotekanauki.pl/articles/174358.pdf
Data publikacji:
2014
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
Cassegrain optical antenna
off-axis hollow laser beam
receiving efficiency
Opis:
The optical model of a Cassegrain optical antenna with a confocal double-parabolic reflector structure has been designed, and the propagation characteristics of a hollow laser beam, which could avoid the loss of energy caused by the subreflector center reflection in the optical antenna, has been researched in this paper. By detailed analysis and numerical calculations of a receiving Cassegrain antenna with different deflection angles, the coupling efficiency curve and 3-D distributions of the receiving light intensity for different inclined angles have been obtained.
Źródło:
Optica Applicata; 2014, 44, 3; 421-431
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Efficacy and tolerability of artesunate-amodiaquine versus artemether-lumefantrine in the treatment of uncomplicated Plasmodium falciparum malaria at two sentinel sites across Cote d’Ivore
Autorzy:
Konate, A.
Barro-Kiki, P.C.M.
Angora, K.E.
Bedia-Tanoh, A.V.
Djohan, V.
Kassi, K.F.
Vanga-Bosson, H.
Miezan, A.J.S.
Assi, S.B.
Menan, E.I.H.
Yavo, W.
Powiązania:
https://bibliotekanauki.pl/articles/6164.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Parazytologiczne
Źródło:
Annals of Parasitology; 2018, 64, 1
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Basic for a valuation of the Polish Exclusive Economic Zone of the Baltic Sea: Rationale and quest for tools
Autorzy:
Weslawski, J.M.
Andrulewicz, E.
Kotwicki, L.
Kuzebski, E.
Lewandowski, A.
Linkowski, T.
Massel, S.R.
Musielak, S.
Olanczuk-Neyman, K.
Pempkowiak, J.
Piekarek-Jankowska, H.
Radziejewska, T.
Rozynski, G.
Sagan, I.
Skora, K.E.
Szefler, K.
Urbanski, J.
Witek, Z.
Wolowicz, M.
Zachowicz, J.
Zarzycki, T.
Powiązania:
https://bibliotekanauki.pl/articles/47570.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
marine environment
erosion
mineral resource
biofiltration
Polish Exclusive Economic Zone
economic valuation
Baltic Sea
ecosystem
marine ecosystem
coastal sand
fish resource
Opis:
This paper summarises current knowledge of goods and services in the Polish Exclusive Economic Zone of the Baltic Sea ecosystem. It reviews specific properties of the Baltic that could be used for economic valuation. Goods and services range from the familiar resources of fish and minerals, which were valued with the Productivity Method, to less obvious services provided by the ecosystem such as biofiltration in coastal sands, valued with either the Replacement Cost or Damage Cost Avoided methods. Disservices to the marine ecosystem are also considered, e.g. erosion and coastal flooding, including the costs of planned mitigating measures. This paper emphasises the importance of using valuation methods to help make better-educated decisions for the sustainability of the Baltic Sea.
Źródło:
Oceanologia; 2006, 48, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pattern of tree diversity in lowland tropical forest in Nikiwar, West Papua, Indonesia
Autorzy:
Murdjoko, A.
Djitmau, D.A.
Ungirwalu, A.
Sinery, A.S.
Siburian, R.H.S.
Mardiyadi, Z.
Wanma, A.O.
Wanma, J.F.
Rumatora, A.
Mofu, W.Y.
Worabai, D.
May, N.L.
Jitmau, M.M.
Mentansan, G.A.F.
Krey, K.
Musaad, I.
Manaf, M.
Abdullah, Y.
Mamboai, H.
Pamuji, K.E.
Raharjo, S.
Kilmaskossu, A.
Bachri, S.
Nur-Alzai, N.
Benu, N.M.H.
Tambing, J.
Kuswandi, R.
Khayati, L.
Lekitoo, K.
Powiązania:
https://bibliotekanauki.pl/articles/2078261.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
dendrogram
conservation
Importance Value Index
Shannon-Weiner
understory
Opis:
Trees are significant components of ecosystems built by several widespread species. For instance, Papua forest is known to comprise abiotic and biotic elements. Also, certain plants have grown in popu- larity to a point where they are discovered almost everywhere. The purpose of this study, therefore, was to investigate tree diversity, distribution, and the importance of conservation. Data were collected in four locations using a total of 24 sample plots spread across Idoor, Karst, Persemaian, and Torembi, where seven, four, seven, and five plots were allocated, respectively. These forests formed a mixed natural plantation comprising 76 species from 35 families. Furthermore, Idoor and Karst generated the highest species diver- sity and varied significantly compared to Persemaian, while Torembi showed similarities with the other three locations. This condition formed three ecosystem communities across Persemaian, Karst, Idoor, and Torembi. Also, the composition of the dominant species showed variations at the seedling and sapling levels believed to structure the understory, while the pole and tree levels characterized the overstory. The total species status was described as critically endangered (CR) of two species, vulnerable (VU) of six species, least con- cern (LC) of 28 species, and data deficient (DD) species. Therefore, location management is advised to not only pay significant attention in terms of economic benefits but also ecological, including the provisions for ex-situ and in-situ conservation to support sustainable forest management.
Źródło:
Dendrobiology; 2021, 85; 78-91
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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