Wyniki wyszukiwania

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Experiments with three-dimensional radar reflectivity data assimilation into the COAMPS model

100%

Jakubiak B., Szturc J., Osrodka K., Jurczyk A.

Meteorology Hydrology and Water Management. Research and Operational Applications

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2014

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tom 02

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nr 1

High temporal and spatial resolution of radar measurements enables to continuously observe dynamically evolving meteorological phenomena. Three-dimensional (3D) weather radar reflectivity data assimilated into the numerical weather prediction model has the potential to improve initial description of the atmospheric model state. The paper is concentrated on the development of radar reflectivity assimilation technique into COAMPS mesoscale model using an Ensemble Kalman Filter (EnKF) type assimilation schemes available in Data Assimilation Research Testbed (DART) programming environment. Before weather radar data enter into the assimilation system, the measurement errors are eliminated through quality control procedures. At first artifacts associated with non-meteorological errors are removed using the algorithms based on analysis of reflectivity field pattern. Then procedures for correction of the reflectivity data are employed, especially due to radar beam blockage and attenuation in rain. Each of the correction algorithms is connected with generation of the data quality characteristic expressed quantitatively by so called quality index (QI). In order to avoid transformation of data uncertainty into assimilation scheme only the radar gates successfully verified by means of the quality algorithms were employed in the assimilation. The proposed methodology has been applied to simulate selected intense precipitation events in Poland in May and August 2010.

2

Cholesterol assimilation by commercial yoghurt starter cultures

100%

Ziarno M., Sekul E., Lafraya A. A.

Acta Scientiarum Polonorum. Technologia Alimentaria

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2007

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tom 06

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nr 1

The ability to in vitro cholesterol level reduction in laboratory media has been shown for numerous strains of lactic acid bacteria, but not for all strains of lactic bacteria used in the dairy industry. The aim of this work was the determination of the ability of selected thermophilic lactic acid bacteria to cholesterol assimilation during 24 h culture in MRS broth. Commercial starter cultures showed various ability to cholesterol assimilation from laboratory medium. In case of starter cultures used for production of traditional yoghurt, consisting of Streptococcus salivarius subsp. thermophilus and Lactobacillus delbrueckii subsp. bulgaricus, the quantity of assimilated cholesterol did not exceed 27% of its initial contents (0.7 g in 1 dm3). Starter cultures used for bioyoghurt production, containing also probiotic strains (came from Lactobacillus acidophilus species or Bifidobacterium genus) assimilated from almost 18% to over 38% of cholesterol. For one monoculture of Lb. acidophilus, cholesterol assimilation ability of 49-55% was observed, despite that the number of bacterial cells in this culture was not different from number of bacteria in other cultures.

3

The effect of Cu2plus on uptake and assimilation of ammonium by cucumber seedlings

100%

Burzynski M., Buczek J.

Acta Physiologiae Plantarum

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1997

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tom 19

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nr 1

The ammonium uptake by cucumber seedlings was estimated from ammonium ions depletion in an uptake solution. The uptake of NH ⁺₄ was decreased by about 60 % after one hour and by about 90 % after two hours of 100 µM Cu²⁺ treatment. On the contrary the accumulation of ammonium in roots of Cu²⁺-treated seedlings at the same time was higher than in the control. Cu²⁺ in the concentration inhibiting NH ⁺₄ absorption during one hour inhibited also glutamine synthetase (GS) (EC 6.3.1.2) and NADH-glutamate dehydrogenase (NADH-GDH) (EC 1.4.1.2) activities both localized in the roots of seedlings. After one hour and at least up to the 4th hour Cu²⁺ accumulated mainly in roots (95 %). It was probably the reason of the GS activity in cotyledons of seedling treated with Cu²⁺ that it was at the same level as in the control. NADH-GDH activity in cotylcdons after one hour of the Cu²⁺ treatment was lower than in the control but the influence of Cu²⁺ action on the activity of this enzyme in roots was by far stronger. 100 µM Cu²⁺ did not affect the activities of both enzymes in in vitro experiments. Copper added into the incubation medium in 1000 µM concentration decreased GS activity, but still did not change NADH-GDH activity. These results suggested the indirect Cu²⁺ action on the investigated enzymes in in vivo experiments. However, no substantial effect on enzyme activities extracted from control plants was observed after the addition of the extract from Cu²⁺-treated plants into the incubation medium. The data suggest that the influence of Cu²⁺ on uptake and assimilation of ammonium may be connected not only with changes of plasma membrane properties in the root cells of Cu²⁺ treated seedlings but also with Cu²⁺ action on two major enzymes involved in NH ⁺₄ assimilation: glutamate synthetase and NADH-glutamate dehydrogenase.

4

Nitrate reductase activity as an indicator of nitrate fixation and assimilation by tropical forest species on St.Thomas Island

100%

Krywult M., Klich M.

Fragmenta Floristica et Geobotanica

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2000

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tom 45

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nr 1-2

5

Stare drzewostany rowniez pobieraja CO2 z atmosfery

84%

W O.

Biuletyn Informacyjny Ośrodka Badawczo-Rozwojowego Przemysłu Płyt Drewnopochodnych w Czarnej Wodzie

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2008

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tom 48

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nr 3-4

231

6

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Assimilation of the satellite SST data in the 3D CEMBS model

84%

Nowicki A., Dzierzbicka-Glowacka L., Janecki M., Kalas M.

Oceanologia

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2015

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tom 57

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nr 1

7

About the biophysical mechanisms of the long-distance water translocation in plants

84%

Kargol M., Kosztolowicz T., Przestalski S.

International Agrophysics

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1995

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tom 09

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nr 3

8

Assimilate partitioning in pearl millet [Pennisetum glaucum L.R.Br.]

84%

Misra A. N.

Acta Physiologiae Plantarum

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1995

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tom 17

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nr 1

9

Thioredoxins in higher plants are the primary target for the phytotoxic action of SO2 NOx, H2O2 and dehydroascorbate

84%

Haberlein I.

Biological Bulletin of Poznań. Supplement

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1997

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tom 34

10

Assimilation [in vitro] of cholesterol by yogurt bacteria

84%

Dilmi-Bouras A.

Annals of Agricultural and Environmental Medicine

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2006

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tom 13

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nr 1

A considerable variation is noticed between the different species studied and even between the strains of the same species, in the assimilation of cholesterol in synthetic media, in presence of different concentrations of bile salts and under anaerobiosis conditions. The obtained results show that certain strains of Streptococcus thermophilus and Lactobacillus bulgaricus resist bile salts and assimilate appreciable cholesterol quantities in their presence. The study of associations shows that only strains assimilating cholesterol in a pure state remain active when they are put in associations, but there is no additional effect. However, the symbiotic effect between Streptococcus thermophilus and Lactobacillus bulgaricus of yogurt, with regard to bile salts, is confirmed. The lactic fermenters of yogurt (Y2) reduce the levels of total cholesterol, HDL-cholesterol and LDL-cholesterol, in a well-balanced way. In all cases, the assimilated quantity of HDL-cholesterol is lower than that of LDL-cholesterol. Moreover, yogurt Y2 keeps a significant number of bacteria, superior to 108 cells ml-1, and has a good taste 10 days after its production.

11

Chlorophyll fluorescence as a tool in selection of maize lines for hybrids with a high CO2 assimilation under chilling conditions

84%

Koscielniak J., Janowiak F., Kurczych Z.

Polish Journal of Natural Sciences. Supplement

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2003

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tom 01

12

Post-effect of chilling stress on competitive ability of sinks in tomato plants

84%

Starck Z., Niemyska B., Choluj D.

Acta Physiologiae Plantarum

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1996

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tom 18

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nr 1

13

Influence of selected soil saprotrophes on gas exchange, growth and yield of Solanum tuberosum

84%

Mazurkiewicz-Zapalowicz K., Wrobel J., Janowicz K.

Acta Physiologiae Plantarum

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2004

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tom 26

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nr 2

14

Influence of soil supplementation with nitrogen and magnesium on the size of assimilation area of maize cultivars (Zea mays L.) differing in genetic profile

67%

Szulc P., Bocianowski J., Rybus-Zajac M.

Electronic Journal of Polish Agricultural Universities. Series Agronomy

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2013

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tom 16

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nr 2

15

Okresowe pobieranie P, K i Na przez buraki cukrowe w warunkach nawadniania, w zależności od rozwoju i wnoszenia składników pokarmowych do gleby

67%

Analogides D. A.

Gazeta Cukrownicza

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1988

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tom 96

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nr 02

16

Wpływ nawadniania i nawożenia azotem na asymilację i transpirację życicy westerwoldzkiej

67%

Rumasz-Rudnicka E.

Acta Agrophysica

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2010

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tom 15

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nr 2[178]

Doświadczenie polowe prowadzono w 2008 r. w SD Lipnik należącej do Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie. Mieszankę życic westerwoldzkich uprawiano w zróżnicowanych warunkach wodnych (O – obiekty kontrolne – bez nawadniania i W – obiekty nawadniane) oraz nawożenia azotem (1 N – 50 kg, 2 N – 100 kg, 3 N –150 kg N·haˉ¹). Uzupełniające nawadnianie istotnie podwyższało natężenie fotosyntezy (o 27,5%) i transpiracji (o 63%). Nawożenie zawsze zwiększało asymilację i różnie wpływało na transpirację – w zależności od wysokości dawki azotu i warunków wilgotnościowych gleby. Zawartość barwników malała pod wpływem nawadniania i zwiększała się w wyniku nawożenia azotem. Łączny plon świeżej masy zebrany w doświadczeniu wyniósł 50,1 t·haˉ¹, podczas gdy plon z poletek kontrolnych (bez nawadniania) – 46,1 t·haˉ¹. Dzięki nawadnianiu zanotowano istotny wzrost plonu wynoszący 7,9 t·haˉ¹ (17,1% w porównaniu do obiektu kontrolnego). Zastosowanie nawożenia azotowego w dawce 100 i 150 kg N·haˉ¹ spowodowało przyrosty odpowiednio o 41,6% i 61,1% w porównaniu do nawożenia dawką 50 kg N·haˉ¹. Efekty produkcyjne (plonowanie) były istotnie skorelowane z fotosyntezą, transpiracją i barwnikami asymilacyjnymi. Asymilacja była istotnie (dodatnio) skorelowana z transpiracją, podczas gdy współczynnik wykorzystania wody ujemnie z transpiracją.

17

Consumption, assimilation, and utilization of food substances and energy by Coregonus lavaretus L.

67%

Ryzhkov L. P.

Polskie Archiwum Hydrobiologii

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1992

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tom 39

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nr 3-4

18

A comparative developmental pattern of enzymes of carbon metabolism and pentose phosphate pathway in mungbean and lentil nodules

67%

Chopra J., Kaur N., Gupta A. K.

Acta Physiologiae Plantarum

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2002

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tom 24

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nr 1

19

Distribution of glutamine synthetase isoforms in Triticale seedling leaves

67%

Bielawski W.

Acta Physiologiae Plantarum

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1993

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tom 15

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nr 4

20

Diversified response to drought of light exposed and shaded leaves of potted grapevine, peach and pear trees

67%

Neri D., Castagnoli M., Poni S., Corelli L.

Journal of Fruit and Ornamental Plant Research

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2003

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tom 11

Ograniczanie wyników

Experiments with three-dimensional radar reflectivity data assimilation into the COAMPS model

Cholesterol assimilation by commercial yoghurt starter cultures

The effect of Cu2plus on uptake and assimilation of ammonium by cucumber seedlings

Nitrate reductase activity as an indicator of nitrate fixation and assimilation by tropical forest species on St.Thomas Island

Stare drzewostany rowniez pobieraja CO2 z atmosfery

Assimilation of the satellite SST data in the 3D CEMBS model

About the biophysical mechanisms of the long-distance water translocation in plants

Assimilate partitioning in pearl millet [Pennisetum glaucum L.R.Br.]

Thioredoxins in higher plants are the primary target for the phytotoxic action of SO2 NOx, H2O2 and dehydroascorbate

Assimilation [in vitro] of cholesterol by yogurt bacteria

Chlorophyll fluorescence as a tool in selection of maize lines for hybrids with a high CO2 assimilation under chilling conditions

Post-effect of chilling stress on competitive ability of sinks in tomato plants

Influence of selected soil saprotrophes on gas exchange, growth and yield of Solanum tuberosum

Influence of soil supplementation with nitrogen and magnesium on the size of assimilation area of maize cultivars (Zea mays L.) differing in genetic profile

Okresowe pobieranie P, K i Na przez buraki cukrowe w warunkach nawadniania, w zależności od rozwoju i wnoszenia składników pokarmowych do gleby

Wpływ nawadniania i nawożenia azotem na asymilację i transpirację życicy westerwoldzkiej

Consumption, assimilation, and utilization of food substances and energy by Coregonus lavaretus L.

A comparative developmental pattern of enzymes of carbon metabolism and pentose phosphate pathway in mungbean and lentil nodules

Distribution of glutamine synthetase isoforms in Triticale seedling leaves

Diversified response to drought of light exposed and shaded leaves of potted grapevine, peach and pear trees