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Wyświetlanie 1-7 z 7
Tytuł:
Badania i ocena wpływów drgań drogowych w zespole budynków zabytkowych
Investigations and evaluation of road vibrations influence in historic buildings complex
Autorzy:
Chyży, T.
Czech, K.R.
Malesza, M.
Miedziałowski, C.
Powiązania:
https://bibliotekanauki.pl/articles/217928.pdf
Data publikacji:
2009
Wydawca:
Stowarzyszenie Konserwatorów Zabytków
Tematy:
drganie
zabudowa historyczna
vibration
historical buildings
Opis:
W pracy przedstawiono badania wpływu drgań drogowych na obiekty budowlane i ich użytkowników w zespole zabytkowym miasta Tykocin. Badaniami objęto 9 budynków o konstrukcji typowej dla zabudowy miasta. Przedstawiono metodykę badań oraz uzyskane wyniki. Następnie podano ocenę wpływu zarejestrowanych drgań na budynki (na podstawie normowych Skal Wpływów Dynamicznych) i ludzi w nich przebywających. Na zakończenie sformułowano wnioski i zalecenia, co do konieczności i kierunków modernizacji drogi, przy której zlokalizowane są badane obiekty.
Paper presents investigations of road vibration influence on buildings and their inhabitants in historic town Tykocin. Method of investigations and obtained results are presented. Conclusions coming from evaluation of influence of registered vibrations on buildings on the base of Dynamic Influence Scales and on building inhabitants. Conclusions and practical recommendations for required modernization of road where buildings are located close to are ending the paper.
Źródło:
Wiadomości Konserwatorskie; 2009, 26; 499-508
0860-2395
2544-8870
Pojawia się w:
Wiadomości Konserwatorskie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Water-borne hyphomycetes in tree canopies of Kaiga (Western Ghats), India
Autorzy:
Sudheep, N.M.
Sridhar, K.R.
Powiązania:
https://bibliotekanauki.pl/articles/67068.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
water-borne hyphomycete
hyphomycete
diversity
conidium
leaf litter
sediment
stemflow
tree canopy
Kaiga
Western Ghats
India
life cycle
aquatic habitat
canopy
Opis:
The canopy samples such as trapped leaf litter, trapped sediment (during summer), stemflow and throughfall (during monsoon) from five common riparian tree species (Artocarpus heterophyllus, Cassia fistula, Ficus recemosa, Syzygium caryophyllatum and Xylia xylocarpa) in Kaiga forest stand of the Western Ghats of southwest India were evaluated for the occurrence of water-borne hyphomycetes. Partially decomposed trapped leaf litter was incubated in bubble chambers followed by filtration to assess conidial output. Sediments accumulated in tree holes or junction of branches were shaken with sterile leaf disks in distilled water followed by incubation of leaf disks in bubble chamber and filtration to find out colonized fungi. Stemflow and throughfall samples were filtered directly to collect free conidia. From five canopy niches, a total of 29 water-borne hyphomycetes were recovered. The species richness was higher in stemflow and throughfall than trapped leaf litter and sediments (14-16 vs. 6-10 species). Although sediments of Syzygium caryophyllatum were acidic (5.1), the conidial output was higher than other tree species. Stemflow and throughfall of Xylea xylocarpa even though alkaline (8.5-8.7) showed higher species richness (6-12 species) as well as conidial load than rest of the tree species. Flagellospora curvula and Triscelophorus acuminatus were common in trapped leaf litter and sediments respectively, while conidia of Anguillospora crassa and A. longissima were frequent in stemflow and throughfall. Diversity of water-borne hyphomycetes was highest in throughfall of Xylea xylocarpa followed by throughfall of Ficus recemosa. Our study reconfirms the occurrence and survival of diverse water-borne hyphomycetes in different niches of riparian tree canopies of the Western Ghats during wet and dry regimes and predicts their possible role in canopy as saprophytes, endophytes and alternation of life cycle between canopy and aquatic habitats.
Źródło:
Acta Mycologica; 2010, 45, 2
0001-625X
2353-074X
Pojawia się w:
Acta Mycologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Response of coastal phytoplankton to upwelling induced hydrological changes in the Alappuzha mud bank region, Southwest coast of India
Autorzy:
Madhu, N.V.
Anil, P.
Meenu, P.
Gireeshkumar, T.R.
Muraleedharan, K.R.
Rehitha, T.V.
Dayana, M.
Vishal, C.R.
Powiązania:
https://bibliotekanauki.pl/articles/2078930.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
phytoplankton
hydrological change
coastal upwelling
chlorophyll a
algal bloom
mud bank
nearshore area
Alappuzha
India
Opis:
The response of phytoplankton community to the co-existing events of coastal upwelling and mud banks in the nearshore waters of Alappuzha (15 m depth), located in the southwest coast of India from April to November 2016, is described based on size-fractionated phytoplankton biomass (chlorophyll a), primary production and community composition. The study region exhibited well-distinct spatio-temporal hydrological changes because of the influence of wind-driven coastal upwelling, prevalent during the southwest monsoon (SWM) period. However, the formation of mud banks, in addition to coastal upwelling, was observed at station M2, which facilitated the substantial increase of water column turbidity and inorganic nutrients (ammonium, phosphate, and silicate) during and after the peak SWM period compared to the non-mud bank reference stations (M1 and M3). The prevailing hydrological changes were complemented the corresponding phytoplankton productivity patterns, in which profound domination of nanophytoplankton (2—20 μm) chlorophyll a and primary production was observed throughout the study region, irrespective of seasons. The SIMPER analysis, based on phytoplankton (mostly >20 μm) species composition data (microscopy), revealed the formation of certain characterizing species, mainly comprised of diatoms and dinoflagellates. The consistent predominance of the nanophytoplankton, established under variable hydrological scenarios, showed that the inorganic nutrient (specifically ammonium) availability was instrumental in defining the widespread growth of nanophytoplankton community compared to the prevailing light levels. The present study thus revealed that even the small-sized phytoplankton community could survive in the nutrient-enriched coastal waters, characterised by the co-existing upwelling and mud banks.
Źródło:
Oceanologia; 2021, 63, 2; 261-275
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-7 z 7

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