Wyniki wyszukiwania

1

Processes of speciation in synanthropic floras

100%

Zajac A., Zajac M.

Publications of the Department of Plant Taxonomy of the Adam Mickiewicz University in Poznan

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2000

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tom 10

2

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Opredelenie racional'nogo kolichestva tekhnicheskogo kontrolja mekhanizmov zernouborochnogo kombajjna

88%

Bystryj A., Rohovsky I.

Motrol. Motoryzacja i Energetyka Rolnictwa

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2013

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tom 15

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nr 3

Разработана математическая модель и проведён анализ системы определение рационального количества технического контроля механизмов зерноуборочного комбайна.

3

Drought resistance mechanisms in different turf grass species

88%

Zurek G.

Acta Physiologiae Plantarum

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2007

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tom 29

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nr 1 Suppl.

4

Probing the structural origins and mechanism of the bioactivity of food polysaccharides

75%

Morris V. J.

Polish Journal of Food and Nutrition Sciences

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2011

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tom 61

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nr Suppl.1

5

Mechanisms regulating spermiogenesis in plants

75%

Kwiatkowska M., Poplonska K., Wojtczak A.

Acta Biologica Cracoviensia. Series Botanica. Supplement

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2008

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tom 50

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nr 1

6

5',8-cyclo-2'-deoxyadenosine [cdA] formation by gamma-radiation. Theoretical quantum mechanics study

75%

Karwowski B. T., Grand A., Cadet J.

Acta Biochimica Polonica

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2009

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tom 56

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nr 4

655-662

Reactions of reactive oxygen species and more specifically - of hydroxyl radical (•OH) - with nucleosides may lead to the generation of radicals in the base and 2-deoxyribose moieties. In the present study emphasis was put on the possible reaction modes of 2'-deoxyadenosine (dA) radicals, leading to the formation of related 5',8-cyclonucleosides. It appears that the prerequisite for the formation of 5',8-cyclo-2'-deoxyadenosine (cdA) is the adoption of O4'-exo conformation by 2-deoxyribose; however, this is the least energetically favored conformer among the different puckered forms adopted by the furanose ring. The O4'-exo conformation was found to be present in each of the discussed mechanisms.

7

Volnistost' poverkhnosti pri obkatyvanijj tel vrashhenija polikami

75%

Butakov B., Artyukh V.

Motrol. Motoryzacja i Energetyka Rolnictwa

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2013

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tom 15

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nr 2

8

Supercritical fluids

75%

Askin R., Otles S.

Acta Scientiarum Polonorum. Technologia Alimentaria

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2005

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tom 04

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nr 1

3-16

This study includes information concerning supercritical fluids. Beginning from the general description of the supercritical fluids, their historical background with physico-chemical properties is given. Special properties with the aid of which supercritical characteristics are obtained are attempted to be explained. Also, supercritical C02 (SCC02), as a solvent for extraction related to the advantages of using such a solvent carrying supercritical properties, is discussed. In order to understand the mechanism of supercritical fluid extraction (SFE), the modelling concept of supercritical fluids (SCFs) and the criteria for various separation techniques are redefined.

9

Specificity and mechanism of the cleavages induced in yeast tRNAPhe by magnesium ions

75%

Marciniec T., Ciesiolka J., Wrzesinski J., Wiewiorowski M., Krzyzosiak W. J.

Acta Biochimica Polonica

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1989

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tom 36

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nr 3-4

10

Stimulatory influence of progesterone on its own synthesis in bovine corpus luteum

75%

Kotwica J., Rekawiecki R., Duras M.

Bulletin of the Veterinary Institute in Puławy

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2004

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tom 48

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nr 2

11

Mechanisms of Galleria mellonella cellular immune response after infection with entomopathogenic fungus Conidiobolus coronatus

63%

Ligeza-Zuber M.

Annals of Parasitology

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2012

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tom 58

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nr 4

12

Mechanisms for the formation of membranous nanostructures in cell-to-cell communication

63%

Schara K., Jansa V., Sustar V., Dolinar D., Pavlic J. I., Lokar M., Kralj-Iglic V., Veranic P., Iglic A.

Cellular and Molecular Biology Letters

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2009

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tom 14

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nr 4

636-656

Cells interact by exchanging material and information. Two methods of cell-to-cell communication are by means of microvesicles and by means of nanotubes. Both microvesicles and nanotubes derive from the cell membrane and are able to transport the contents of the inner solution. In this review, we describe two physical mechanisms involved in the formation of microvesicles and nanotubes: curvature-mediated lateral redistribution of membrane components with the formation of membrane nanodomains; and plasmamediated attractive forces between membranes. These mechanisms are clinically relevant since they can be affected by drugs. In particular, the underlying mechanism of heparin’s role as an anticoagulant and tumor suppressor is the suppression of microvesicluation due to plasma-mediated attractive interaction between membranes.

13

Analysis of mechanisms of enterprise innovative development

63%

Maksimov V., Galgash R.

Teka Komisji Motoryzacji i Energetyki Rolnictwa

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2010

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tom 10B

14

Molecular basis of mechanisms of steroid resistance in children with nephrotic syndrome

63%

Swierczewska M., Ostalska-Nowicka D., Kempisty B., Nowicki M., Zabel M.

Acta Biochimica Polonica

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2013

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tom 60

|

nr 3

Steroid therapy, due to a wide range of anti-inflammatory properties of steroids, is a basic field of treatment in many human diseases including the nephrotic syndrome in children. However, not all patients respond positively to therapy which divides them into steroid sensitive (SS) and steroid resistance (SR) individuals. Many potential factors associated with steroid resistance have been identified so far. It seems that genetic factors associated with glucocorticoid receptor α (GRα), the structure of heterocomplex of GR as well as glycoprotein P or cytochrome P450 may play a role in the induction of glucocorticoid resistance. Here we described several of the molecular mechanisms, which can regulate glucocorticoid sensitivity and resistance. Moreover, we presented genetic defects, which can lead to various effects of treatment and, in a longer perspective, enable clinicians to individualize therapies.

15

Mechanisms of hydrogen peroxide-induced vasoconstriction in the isolated perfused rat kidney

63%

Moreno J. M., Rodriguez Gomez I., Wangensteen R., Perez-Abud R., Duarte J., Osuna A., Vargas F.

Journal of Physiology and Pharmacology

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2010

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tom 61

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nr 3

325-332

The vasoconstrictor effect of hydrogen peroxide (H2O2) on isolated perfused rat kidney was investigated. H2O2 induced vasoconstriction in the isolated rat kidney in a concentration-dependent manner. The vasoconstrictor effects of H2O2 were completely inhibited by 1200 U/ml catalase. Endothelium-removal potentiated the renal response to H2O2. The H2O2 dose-response curve was not significantly modified by administration of the NO inhibitor L-NAME (10-4 mol/l), whereas it was increased by the non-specific inhibitor of K+-channels, tetraethylammonium (3·10-3 mol/l). Separately, removal of extracellular Ca2+, administration of a mixture of calcium desensitizing agents (nitroprusside, papaverine, and diazoxide), and administration of a protein kinase C (PKC) inhibitor (chelerythrine, 10-5 mol/l) each significantly attenuated the vasoconstrictor response to H2O2, which was virtually suppressed when they were performed together. The pressor response to H2O2 was not affected by: dimethyl sulfoxide (7·10-3 mol/l) plus mannitol (3·10-3 mol/l); intracellular Ca2+ chelation using BAPTA (10-5 mol/l); calcium store depletion after repeated doses of phenylephrine (10-5 g/g kidney); or the presence of indomethacin (10-5 mol/l), ODYA (2·10-6 mol/l) or genistein (10-5 mol/l). We conclude that the vasoconstrictor response to H2O2 in the rat renal vasculature comprises the following components: 1) extracellular calcium influx, 2) activation of PKC, and 3) stimulation of pathways leading to sensitization of contractile elements to calcium. Moreover, a reduced pressor responsiveness to H2O2 in female kidneys was observed.

16

Peak numbers of Clethrionomys glareolus [Schreber 1780] and the mechanisms involved

63%

Bujalska G.

Polish Ecological Studies

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1995

|

tom 21

|

nr 4

17

Kinetics and mechanism of elementary gas phase reactions of importance in atmospheric chemistry

63%

Sztuba B., Jodkowski J. T., Ratajczak E.

Archiwum Ochrony Środowiska

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1995

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nr 3-4

18

Multiple molecular recognition mechanisms. Cytochrome P450 - a case study

63%

Wade R. C., Motiejunas D., Schleinkofer K., Sudarko, Winn P. J., Banerjee A.

Cellular and Molecular Biology Letters

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2005

|

tom 10

|

nr Suppl.2

19

Sources and mechanisms of cytoplasmic oxidative damage in Alzheimer's disease

63%

Marlatt M., Lee H., Perry G., Smith M. A., Zhu X.

Acta Neurobiologiae Experimentalis

|

2004

|

tom 64

|

nr 1

20

Seasonal and year-to-year variation of numbers of Chironomus plumosus L. and Tubificidae in a lowland reservoir: regularities, causes, mechanisms

63%

Kajak Z., Prus P.

Polish Journal of Ecology

|

2003

|

tom 51

|

nr 3

During 9 years of studies very regular Chironomus population dynamics was stated in a eutrophic, lowland dam reservoir. There were usually two peaks of the abundance: the higher one at spring (up to 80 thousands ind. m⁻²) and the much lower in autumn. The duration of the spring Chironomus generation was about 3 weeks. The constant presence of young larvae during the summer did not result in the high total abundance of larvae, mainly due to the strong predation of fish and swallows on various stages of Chironomus. The smaller predators pressure in the spring (due to fish breeding) and in the autumn (due to lower temperatures) resulted in the mentioned two peaks. The spring peak abundance was positively correlated with the chlorophyll concentration in water (feeding resource for larvae) and negatively with the water flow. There was also negative correlation of the water flow and the chlorophyll concentration, as well as abundance of Chironomus and Tubificidae during the vegetation season (April-October). Tubificidae correlated strongly positively with the spring Chironomus numbers (with a month lag). The slight positive correlation of these benthic components abundance occurred for the whole vegetation season. Tubificidae occurred in generally high numbers up to 400 thousands m⁻², but various in different years, and with no regular changes during the season.

Ograniczanie wyników

Processes of speciation in synanthropic floras

Opredelenie racional'nogo kolichestva tekhnicheskogo kontrolja mekhanizmov zernouborochnogo kombajjna

Drought resistance mechanisms in different turf grass species

Probing the structural origins and mechanism of the bioactivity of food polysaccharides

Mechanisms regulating spermiogenesis in plants

5',8-cyclo-2'-deoxyadenosine [cdA] formation by gamma-radiation. Theoretical quantum mechanics study

Volnistost' poverkhnosti pri obkatyvanijj tel vrashhenija polikami

Supercritical fluids

Specificity and mechanism of the cleavages induced in yeast tRNAPhe by magnesium ions

Stimulatory influence of progesterone on its own synthesis in bovine corpus luteum

Mechanisms of Galleria mellonella cellular immune response after infection with entomopathogenic fungus Conidiobolus coronatus

Mechanisms for the formation of membranous nanostructures in cell-to-cell communication

Analysis of mechanisms of enterprise innovative development

Molecular basis of mechanisms of steroid resistance in children with nephrotic syndrome

Mechanisms of hydrogen peroxide-induced vasoconstriction in the isolated perfused rat kidney

Peak numbers of Clethrionomys glareolus [Schreber 1780] and the mechanisms involved

Kinetics and mechanism of elementary gas phase reactions of importance in atmospheric chemistry

Multiple molecular recognition mechanisms. Cytochrome P450 - a case study

Sources and mechanisms of cytoplasmic oxidative damage in Alzheimer's disease

Seasonal and year-to-year variation of numbers of Chironomus plumosus L. and Tubificidae in a lowland reservoir: regularities, causes, mechanisms