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1
Content available Bio-interface polymerisation: synthesis of polyaniline on the marine algae surface
100%
Kudo Y. , Goto H.
International Letters of Natural Sciences
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2016
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tom 51
EN
Marine algae Gelidium, Grateloupia elliptica Holmes, and Codium fragile are employed for preparation of PANI/seaweed composites. Infrared absorption (IR), electron spin resonance (ESR) spectroscopy measurements are carried out to confirm the resultant structure. The direct use of natural biological materials for polymerisation reaction allows us to production of polymers with characteristic surface. This can be referred to as bio-interface polymerisation.
2
Magnesium and other microelements in marine algae by faas
84%
Chirila E. , Carazeanu I. , Sava D.
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tom 10
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nr 4 Suppl.1
23-24
3
The distribution of green algae species from the Ulva genera [syn.Enteromorpha; Chlorophyta] in Polish inland waters
84%
Messyasz B. , Rybak A.
Oceanological and Hydrobiological Studies
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2009
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tom 38
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nr 1
121-138
4
On the occurence of uranium and thorium in the biosphere of natural waters. Part I. Uranium and thorium in plankton and inherent plants
84%
Szefer P. , Ostrowski S.
Oceanologia
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1981
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tom 13
5
Content available Chlorophyll fluorimetry as a method for studying light absorption by photosynthetic pigments in marine algae
84%
Matorin D. N. , Antal T. K. , Ostrowska M. , Rubin A. B. , Ficek D. , Majchrowski R.
Oceanologia
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2004
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tom 46
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nr 4
EN
Using laboratory cultures of algae and natural phytoplankton populations from Nhatrang Bay (South China Sea), the relationship between the chlorophyll fluorescence F0, the chlorophyll a concentration Ca and light absorption capacities of algae cells was studied. It is shown that the ratio F0/Ca depends mainly on the species composition of the algae population; hence, the concentration Ca can be measured with the fluorescence method with acceptable accuracy only when the species composition of algae populations varies over a rather narrow range. The fluorescence F0 can, however, be a good index of the total absorption capacities of different phytoplankton species, because the intensity of F0 depends on the sum total of light absorbed by all photosynthetic pigments in a plant cell. Thus, the fluorescence F0 measures not only the concentration of chlorophyll a, but that of all photosynthetic pigment concentrations.
6
Content available Lipid content and fatty acid composition of Mediterranean macro-algae as dynamic factors for biodiesel production
67%
El Maghraby D. M. , Fakhry E. M.
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tom 57
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nr 1
7
Content available Effect of N Pro technology and Seactiv complex on growth, yield quantity and quality of ‘Szampion’ apple trees
67%
Kaplan M. , Baryla P. , Krawiec M. , Kiczorowski P.
Acta Scientiarum Polonorum. Hortorum Cultus
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2013
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tom 12
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nr 6
EN
Recent years have been marked with a more common use of mineral fertilizers comprising marine algal extracts in horticultural production. Seaweed extracts are reported to possess, among others, biostimmulatory potential that improves yield growth and its quality as well as promotes plant resistance to adverse environmental agents. The marine alga processing technologies facilitate the extraction of active substances valuable for plant crops as stimulants for a number of plant physiological processes. The substances can be incorporated into both, soil or foliar applied fertilizers. The present research objective was to assess the influence of N Pro technology and Seactiv complex based on marine algal extracts on apple tree ‘Szampion’ growth, yield quantity and quality. The experimental material comprised ‘Szampion’ apple trees grafted on M.26 stock, the trees were aged 10 years at the experiment onset. The study aimed at evaluation of growth, yield quantity and quality of ‘Szampion’ apple trees fertilized according to two following programs. The measurements performed showed that introduction of the fertilization programs based on marine algal extracts had significant effect on total yield, one fruit weight, firmness and sugar extract content in apple tree ‘Szampion’ fruits. It was found that the N Pro technology and Seactiv complex had significantly beneficial influence on the percentage of big fruits, i.e. above 7.5 cm diameter and marketable yield in each experimental year. Cropping efficiency coefficient (CEC) of ‘Szampion’ apple trees fertilized according to N Pro technology and Seactiv base was significantly higher compared to control solely in 2008, in the other research years the differences were insignificant. The fertilization program based on marine algal extracts had positive influence on the ‘Szampion’ apple tree`s annual increments and each year the trees under N Pro and Seactive complex fertilization technology produced higher increments as against control; the differences in the last research year were significant. The N Pro technology and Seactiv base had positive impact on ‘Szampion’ apple tree leaf surface area, significant influence was observed in the second and third research year.
PL
W ostatnich latach w produkcji ogrodniczej coraz częściej stosuje się nawozy mineralne wzbogacone w substancje pochodzące z wyciągów z alg morskich, którym przypisuje się liczne właściwości, m.in. o charakterze biostymulującym (korzystny wpływ na wzrost i jakość plonu oraz zwiększanie odporności na niekorzystne czynniki środowiska). Dzięki opracowanym technologiom przetwarzania alg morskich udało się wyekstrahować ważne dla upraw roślinnych związki, które stymulują wiele procesów fizjologicznych w roślinach. Związki te mogą być dodawane zarówno do nawozów doglebowych, jak i dolistnych. Celem przeprowadzonego doświadczenia była ocena wpływu technologii N Pro i kompleksu Seactiv bazujących na wyciągach z alg morskich na wzrost, wielkość i jakość plonu jabłoni odmiany ‘Szampion’. Materiałem doświadczalnym były drzewa odmiany ‘Szampion’ okulizowane na podkładce M.26 w wieku 10 lat w momencie rozpoczęcia doświadczenia. W doświadczeniu oceniano wzrost, wielkość i jakość plonu drzew jabłoni odmiany ‘Szampion’ nawożonych dwoma programami. Na podstawie przeprowadzonych pomiarów wykazano, że zastosowanie programu nawozowego opartego na wyciągach z alg morskich nie miało istotnego wpływu na plon ogólny, masę jednego owocu, jędrność oraz zawartość ekstraktu cukrowego owoców jabłoni odmiany ‘Szampion’. Wykazano, że technologia N Pro i kompleks Seactiv miały istotnie korzystny wpływ na procentową liczbę owoców dużych, tj. o średnicy powyżej 7,5 cm, oraz plon handlowy w poszczególnych latach badań. Współczynnik intensywności owocowania drzew jabłoni odmiany ‘Szampion’ nawożonych technologią N Pro i kompleksem Seactiv był istotnie większy niż w kontroli tylko w 2008 r., w pozostałych latach różnice te były nieistotne. Program nawozowy oparty na ekstraktach z wodorostów wpływał korzystnie na długość jednorocznych przyrostów jabłoni odmiany ‘Szampion’, corocznie drzewa nawożone technologią N Pro i kompleksem Seactiv tworzyły dłuższe przyrosty niż kontrolne, w ostatnim roku badań różnice te były istotne. Technologia N Pro i kompleks Seactiv wpłynęły korzystnie na pole powierzchni liści drzew jabłoni odmiany ‘Szampion’, w drugim i trzecim roku badań wpływ ten był istotny.
8
Bioaccumulation of PBDE congener 2,2′,4,4′-tetrabromodiphenyl ether by Heterosigma akashiwo in response to different nutrient concentrations
67%
Ge W. , Yin X. , Chai C. , Zhang J.
Oceanological and Hydrobiological Studies
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2013
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tom 42
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nr 2
9
Content available Herbivory on macro-algae affects colonization of beach-cast algal wrack by detritivores but not its decomposition
67%
Eereveld P. , Hubner L. , Schaefer G. , Zimmer M.
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nr 2
10
Content available Practical applications of the multi-component marine photosynthesis model (MCM)
67%
Ficek D. , Majchrowski R. , Ostrowska M. , Kaczmarek S. , Wozniak B. , Dera J.
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tom 45
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nr 3
EN
This paper describes the applications and accuracy analyses of our multi-component model of marine photosynthesis, given in detail in Woźniak et al. (2003). We now describe an application of the model to determine quantities characterising the photosynthesis of marine algae, especially the quantum yield of photosynthesis and photosynthetic primary production. These calculations have permitted the analysis of the variability of these photosynthesis characteristics in a diversity of seas, at different seasons, and at different depths. Because of its structure, the model can be used as the ‘marine part’ of a ‘satellite’ algorithm for monitoring primary production in the sea (the set of input data necessary for the calculations can be determined with remote sensing methods). With this in mind, in the present work, we have tested and verified the model using empirical data. The verification yielded satisfactory results: for example, the statistical errors in estimates of primary production in the water column for Case 1 Waters do not exceed 45%. Hence, this model is far more accurate than earlier, less complex models hitherto applied in satellite algorithms.
11
Antibacterial activity of marine macro-algae from Karachi coast
67%
Ara J. , Sultana V. , Ehteshamul-Haque S. , Athar M. , Qasim R.
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nr 4
12
Screening of different algal extracts for their efficiency against mechanical transmission of two phytoviruses
67%
Galal A. M. , El-Ayouty Y. M. , Hashem S. A. , El-Sabbahy G.
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nr 2
13
Content available Mathematical description of vertical algal accessory pigment distributions in oceans – a brief presentation
59%
Majchrowski R. , Ostrowska M.
Oceanologia
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2009
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tom 51
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nr 4
EN
A straightforward mathematical expression for describing the vertical distributions of algal accessory pigments in oceans is presented. To this end ca 1500 empirical datasets of accessory pigment depth profiles gathered during some 200 research cruises in different oceanic regions were analysed. These data were retrieved from the bio-optical databases of SeaBASS and U.S. JGOFS published on the Internet. The statistical relationships were analysed between the concentrations of accessory pigments and the trophic indices of waters, as measured by the surface concentrations of chlorophyll a and the optical depths in different oceanic regions. A mathematical expression was established and formulas based on it were found, approximating the relations between the vertical distributions of accessory pigments and the chlorophyll a concentration. These formulas can be used to model the species composition of algae in different parts of the ocean and in remote sensing algorithms.
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