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Wyszukujesz frazę "seasonal distribution" wg kryterium: Temat


Wyświetlanie 1-6 z 6
Tytuł:
Seasonal and diurnal activity of ticks Ixodes ricinus [Linnaeus, 1758] in Masyw Sleza [Lower Silesia]
Autorzy:
Buczek, A.
Lonc, E.
Kucharczyk, K.
Powiązania:
https://bibliotekanauki.pl/articles/837393.pdf
Data publikacji:
1999
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
Silesian region
seasonal activity
Sleza Massif
diurnal activity
distribution
Lower Silesian region
Ixodes ricinus
tick
Źródło:
Annals of Parasitology; 1999, 45, 4
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Distribution of the sea squirt Ecteinascidia thurstoni Herdman, 1890 (Ascidiacea: Perophoridae) along Suez Canal and Egyptian Red Sea coasts
Autorzy:
Gab-Alla, A.A.-F.A.
Powiązania:
https://bibliotekanauki.pl/articles/47709.pdf
Data publikacji:
2008
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
sea squirt
sea coast
Perophoridae
Suez Canal
seasonal rhythm
Red Sea
Ascidiacea
distribution
Ecteinascidia thurstoni
Opis:
Ecteinascidia thurstoni is a colonial sea squirt. It has a seasonal rhythm and a tropical and subtropical distribution; it is usually present during the summer months. It synthesizes a group of molecules called ecteinascidins. One of these is ET-743, a compound that has a most original anti-tumoral activity and is today considered to be one of the most promising substances effective against various solid-type tumors (currently sold under the trade name of Yondelis for the treatment of sarcomas and related tumors; it is undergoing phase II/III clinical trails for other kinds of tumors). Worldwide, Ecteinascidia species represent the only available source of this bioactive compound, which was first discovered in E. turbinata. During the present study, the ecology of E. thurstoni along the Suez Canal and Red Sea was investigated. Its populations were observed to be highly gregarious due in part to their low larval dispersal, which is very localized; larvae therefore tend to settle close to their parent colonies. It is only recorded in shallow waters (0.5–1.5 m) as an epiphyte on the pneumatophores of mangroves by the Red Sea, on the pilings of jetties, and the metal or cement banks of the Suez Canal. The morphometric characteristics (zooid length, zooid weight, colony weight) of the Suez Canal population differ significantly from those of the Red Sea. Studying the distribution of this species and locating its different populations along the Suez Canal and Red Sea could help to characterize their genetics, chemistry and bacterial communities at different isolated locations. Ultimately, this will help to define the sources of ET-743 and hence promote its biosynthesis on a commercial scale.
Źródło:
Oceanologia; 2008, 50, 2; 239-253
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Non-native crab Rhithropanopeus harrisii (Gould, 1984) – a new component of the benthic communities in the Gulf of Gdansk (Southern Baltic Sea)
Autorzy:
Hegele-Drywa, J.
Normant, M.
Powiązania:
https://bibliotekanauki.pl/articles/48242.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
mud crab
Rhithropanopeus harrisii
non-native species
seasonal change
water temperature
distribution
Gdansk Gulf
Baltic Sea
Źródło:
Oceanologia; 2014, 56, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Potential effects of abiotic factors on the abundance and distribution of the plankton in the Western Harbour, South-Eastern Mediterranean Sea, Egypt
Autorzy:
Heneash, A.M.M.
Tadrose, H.R.Z.
Hussein, M.M.A.
Hamdona, S.K.
Abdel-Aziz, N.
Gharib, S.M.
Powiązania:
https://bibliotekanauki.pl/articles/48656.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
plankton
zooplankton
distribution
Western Harbour
Mediterranean Sea
Egypt
abiotic factor
potential effect
abundance
physicochemical parameter
seasonal dynamics
Źródło:
Oceanologia; 2015, 57, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza logistyki dystrybucji nowych maszyn rolniczych w aspekcie zmian struktury popytu
The analysis of distribution logistics of new farm machines in the context of changes in the demand structure
Autorzy:
Juściński, S.
Powiązania:
https://bibliotekanauki.pl/articles/336012.pdf
Data publikacji:
2012
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Maszyn Rolniczych
Tematy:
maszyny rolnicze
producent
nabywca
dystrybucja
logistyka
sezonowość
badania
Polska
agricultural machines
producer
buyer
distribution
logistics
seasonal character
experimentation
Polska
Opis:
W artykule przedstawiono analizę zagadnień dotyczących logistyki dystrybucji nowych maszyn rolniczych. Scharakteryzowano strukturę rynku maszyn rolniczych w Polsce. Omówiono krajową dystrybucję selektywną prowadzoną przez liderów branży. Przedstawiono graficznie uzyskane wyniki badań poziomu ilościowego sprzedaży maszyn rolniczych. Badania zrealizowano w Dziale Handlowym przedsiębiorstwa będącego autoryzowanym dystrybutorem maszyn i ciągników rolniczych. Cykl wykonanych badań obejmował lata 2003-2010. Wyniki badań poddano opracowaniu statystycznemu przy wykorzystaniu programu R wersja 2.14.1. Wyznaczono trend, wahania przypadkowe i wahania sezonowe dla szeregu obserwacji miesięcznych. Rozkłady czasowe sprzedaży poddano analizie w aspekcie kalendarza zabiegów agrotechnicznych.
The article presents an analysis of issues concerning the distribution logistics of new farm machines. It contains a characterization of the farm machines market in Poland. Selective domestic distribution conducted by leaders in the industry was discussed. The results of surveys of farm machines sales volume were presented in a graphic form. The surveys were carried out in the Sales Department of the enterprise which is an authorized distributor of farm machines and tractors. The series of carried out surveys spanned the years 2003-2010. The results of the surveys were subject to statistical analysis with the use of the R program version 2.14.1. The trend as well as random and seasonal fluctuations for a series of monthly observations were identified. Temporal breakdowns of sales were analysed in the context of the calendar of agrotechnical operations.
Źródło:
Journal of Research and Applications in Agricultural Engineering; 2012, 57, 2; 85-91
1642-686X
2719-423X
Pojawia się w:
Journal of Research and Applications in Agricultural Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Seasonal pattern of the chlorophyll-a in a coastal lagoon from the Southern Baja California (Mexico), described with in situ observations and MODIS-Aqua imagery
Autorzy:
Jimenez-Quiroz, M.C.
Martell-Dubois, R.
Cervantes-Duarte, R.
Cerdeira-Estrada, S.
Powiązania:
https://bibliotekanauki.pl/articles/2078912.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
chlorophyll a
coastal lagoon
remote sensing
transitional zone
climatology
seasonal pattern
phytoplankton biomass
distribution
multivariate statistical method
MODIS-Aqua data
Opis:
This study aims to estimate, with a climatology perspective, the average seasonal pattern of phytoplankton biomass (SP-PBavg) and its distribution in Bahia Magdalena (Mexico) as a baseline to evaluate PB changes in future studies. This lagoon is in a semi-arid region, lacks river discharges, and channels with vegetation are limited at the north and south zones. SP-PBavg was estimated with chlorophyll-a (chl-a) data obtained in 21 sites on daily MODISAqua imagery (2002—2013; n = 2,418) from a ready-to-use public database. The first step was to establish criteria to use imagery and validate with in situ observations taken in 14 sites (2002—2011; n = 312). MODIS-Aqua overestimated chl-a (mean ± confidence interval95: 5.09 ± 0.97 mg m−3; n = 225); with differences among sites. There were no differences near the inlet lagoon (p <0.05), where the water characteristics are Case-1 while values were significantly higher in the eastern shore and two or three times higher in the mouth of north and south channels, whose water characteristics are similar to Case-2. Multivariate statistical methods allow defining zones into the lagoon and describe their SP-PBavg with both in situ and MODIS Aqua data, but the former’s sample size was small, and the patterns were only delineated. In the inlet surroundings, chl-a peaks from March/April to June/July. On the eastern shore, where MODIS Aqua and in situ data were correlated, despite concentration differences, chla is higher from March/April to October, with peaks in June and September. In the mouth of internal channels, chl-a was higher than other sites and during a longer period; however, the very high MODIS-Aqua values suggest that the satellite also detects organic matter supplied by phytoplankton and other vegetables, which explain the high lagoon’s productivity. These results validate the use of MODIS Aqua imagery to describe the chl-a seasonal patterns in the sea’s vicinity
Źródło:
Oceanologia; 2021, 63, 3; 329-342
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

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