Wyniki wyszukiwania - AGRO

1

Differences in nonezymatic glycation of histones

100%

Lakatos A., Kiss N., Jobst K.

Acta Biochimica Polonica

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1994

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tom 41

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nr 4

Time course of glucose binding by histone HI and total histones was followed in isolated histone preparations and in thymus nuclei. In both cases the uptake of glucose by HI was surprisingly high in contrast to a much lower uptake of glucose by total histones. DNA is not implicated in glycation of histones in nuclei.

2

The effect of initial concentration of substrates on the kinetics of denitryfication

100%

Waligorska M., Domka F.

Polish Journal of Environmental Studies

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1994

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tom 03

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nr 1

In this paper we present the results of studies on the influence of an initial substrate concentration (NO3-, sodium lactate) on the kinetics of denitrification. We have found that the optimum rates of the process are obtained at 37°C for the nutrient medium containing sodium lactate at a concentration of 2.52 g/dm3, and nitrate nitrogen 1,4 g/dm3.

3

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Effect of static height of bed on the kinetics of potato protein drying in a spouted bed dryer

100%

Peron S., Kramkowski R., Peksa A., Zdrojewski Z.

Acta Agrophysica

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2003

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tom 02

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nr 2[96]

4

Mechanism of peroxynitrite interaction with cytochrome C

100%

Gebicka L., Didik J.

Acta Biochimica Polonica

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2003

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tom 50

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nr 3

Kinetics of the reaction of peroxynitrite with ferric cytochrome c in the absence and presence of bicarbonate was studied. It was found that the heme iron in ferric cytochrome c does not react directly with peroxynitrite. The rates of the absorbance changes in the Soret region of cytochrome c spectrum caused by peroxynitrite or peroxynitrite/bicarbonate were the same as the rate of spontaneous isomerization of peroxynitrite or as the rate of the reaction of peroxynitrite with bicarbonate, respectively. This means that intermediate products of peroxynitrite decomposition, OH/ NO2 or, in the presence of bicarbonate, CO3- / NO2, are the species responsible for the absorbance changes in the Soret band of cytochrome c. Modifications of the heme center of cytochrome c by radiolytically produced radicals, OH, NO2 or CO3- , were also studied. The absorbance changes in the Soret band caused by radiolytically produced OH or CO3- were much more significant that those observed after peroxynitrite treatment, compared under similar concentrations of radicals. NO2 produced radiolytically did not interact with the heme center of cytochrome c. Cytochrome c exhibited an increased peroxidase-like activity after reaction with peroxynitrite as well as with radiolytically produced OH, NO2 or CO3- radicals. This means that modification of protein structure: oxidation of amino acids and/or tyrosine nitration, facilitates reaction of H2O2 with the heme iron of cytochrome c, followed by reaction with the second substrate.

5

Antiradical activity of ciders

88%

Foltyniewicz M., Kiewlicz J., Zielinski R.

Towaroznawcze Problemy Jakości. Polskie Towarzystwo Towaroznawcze

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2017

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nr 3

6

Effect of An tracts within the UP element proximal subsite of a model promoter on kinetics of open complex formation by Escherichia coli RNA polymerase

88%

Kolasa I. K., Lozinski T., Wierzchowski K. L.

Acta Biochimica Polonica

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2002

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tom 49

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nr 3

In the open transcription complex (RPo), Escherichia coli RNA polymerase o and a70 subunits are known to be in contact with each other and with the promoter region overlapping the -35 hexamer and the proximal part of the UP element. To probe the effect of An DNA bending tracts in this region on initiation of transcription, kinetics of the formation of RPo by Escherichia coli RNA polymerase at two groups of synthetic consensus-like promoters bearing single DNA bending tracts (i) A5 within the proximal subsite region of the UP element (promoters Pk and Pl) and (ii) A5 (Pg) or A8 (Pm) in the region including the downstream end of the proximal UP subsite and the -35 consensus hexamer was studied in vitro using the fluorescence-detected abortive initiation assay. The kinetic data obtained demonstrate that the overall second-order rate constant ka of RPo formation is: (i) by almost one order of magnitude larger at Pk and Pl, relative to that at a control unbent promoter, and mainly due to a higher value of the equilibrium constant, Kj, of the initial closed complex; and (ii) several-fold smaller at Pg and Pm owing to a strongly decreased value of K^. For Pm, the latter parameter was found to be dependent exponentially on four Mg ions, as compared with the seven ions remaining in equilibrium with the initial closed complex at the parent Pa promoter. This indicates that promoter region bearing a stiff A8 T8 fragment of B'-DNA forms a smaller number of ionic contacts with the a subunit. These findings provide a new insight to and support the present model of interactions between RNA polymerase a and o subunits with the proximal UP subsite and the -35 region of promoters.

7

Ehksperimental'noe issledovanie tekhnologicheskikh parametrov processa infrakrasnojj sushki dvizhushhegosja syr'ja syr'ja maslichnykh kul'tur

75%

Bandura V., Curkan O., Palamarchuk V.

Motrol. Motoryzacja i Energetyka Rolnictwa

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2015

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tom 17

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nr 4

8

Termodinamicheskaja vozmozhnost' povyshenija ehffektivnocti DVS

75%

Podznoev G., Abdulgazic U., Zharik T.

Motrol. Motoryzacja i Energetyka Rolnictwa

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2014

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tom 16

|

nr 1

9

Leaching kinetics of atrazine and inorganic chemicals in tilled and orchard soils

75%

Szajdak L. W., Lipiec J., Siczek A., Nosalewicz A., Majewska U.

International Agrophysics

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2014

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tom 28

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nr 2

The aim of this study was to verify first-order kinetic reaction rate model performance in predicting of leaching of atrazine and inorganic compounds (K+1, Fe+3, Mg+2, Mn+2, NH4 +, NO3 - and PO4 -3) from tilled and orchard silty loam soils. This model provided an excellent fit to the experimental concentration changes of the compounds vs. time data during leaching. Calculated values of the first-order reaction rate constants for the changes of all chemicals were from 3.8 to 19.0 times higher in orchard than in tilled soil. Higher first-order reaction constants for orchard than tilled soil correspond with both higher total porosity and contribution of biological pores in the former. The first order reaction constants for the leaching of chemical compounds enables prediction of the actual compound concentration and the interactions between compound and soil as affected by management system. The study demonstrates the effectiveness of simultaneous chemical and physical analyses as a tool for the understanding of leaching in variously managed soils.

10

Relationship between the size of cell and the number of its ciliary rows in the ciliate Dileptus

75%

Drzewinska J., Golinska K.

Acta Protozoologica

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1987

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tom 26

|

nr 1

11

Issledovanie raspredelenija vodoroda v svarnom soedinenii v zavisimosti ot temperaturnykh uslovijj

75%

Makarenko V., Muravyov K., Yevpak T., Kalivoshko N.

Motrol. Motoryzacja i Energetyka Rolnictwa

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2013

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tom 15

|

nr 3

Приведены результаты исследования кинетики распределения водорода в сварном соединении в зависимости от температурных режимов.

12

Modelling of mass transfer kinetic in osmotic dehydration of kiwifruit

75%

Jabrayili S., Farzaneh V., Zare Z., Bakhshabadi H., Babazadeh Z., Mokhtarian M., Carvalho I. S.

International Agrophysics

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2016

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tom 30

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nr 2

13

Investigation of the kinetics of the development of the distribution

75%

Marchenko D.

Teka Komisji Motoryzacji i Energetyki Rolnictwa

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2012

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tom 12

|

nr 4

75%

Chmura A., Pazdzior G., Langner M.

Cellular and Molecular Biology Letters

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2002

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tom 07

|

nr 2

20

Effect of extract content on the kinetics of drying of barley malt concentrate droplets

75%

Peron S., Kramkowski R., Figiel A., Stepien B., Blazewicz J.

Acta Agrophysica

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2002

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tom 77

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