Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 9

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych:  iron oxide
help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
1

Chemical forms of iron in the composts obtained from municipal solid waste contaminated with pulverized metallic Fe, Fe2O3 or FeS

100%
Ciba J., Zolotajkin M.
Archiwum Ochrony Środowiska
|
2001
|
tom 27
|
nr 1
2

Aggregation of soil particles in relation to iron oxides and organic matter contents in black earths [Gleyic Phaeozems] of Kujawy Upland

100%
Dabkowska-Naskret H., Dlugosz J., Kobierski M.
Bibliotheca Fragmenta Agronomica
|
1997
|
tom 2A
3

Activity of Ru-Fe2O3 catalysts in the process of NO reduction with propane

100%
Basinska A., Machej T., Domka F., Janas J.
Polish Journal of Environmental Studies
|
2003
|
tom 12
|
nr 2
The activity of supported ruthenium catalysts (Ru/Fe2O3) in the reaction of NO reduction with propane was studied. The iron oxides used as support of the ruthenium phase differed only in the type of oxidehydroxide (α-, β-, γ-, δ-FeOOH) used in synthesis of the support. It has been established that the precursor Fe2O3 determined the activity of the catalysts studied in the process of NO reduction with propane. It has been shown that the catalysts Ru/Fe2O3 precipitated on the properly prepared iron oxide permit obtaining high NO conversion at temperatures from 400 to 500oC in reducing conditions.
4

Effect of MRI tags: SPIO nanoparticles and 19F nanoemulsion on various populations of mouse mesenchymal stem cells

80%
Muhammad G., Jablonska A., Rose L., Walczak P., Janowski M.
Acta Neurobiologiae Experimentalis
|
2015
|
tom 75
|
nr 2
Transplantation of mesenchymal stem cells (MSCs) has emerged as a promising strategy for the treatment of myriad human disorders, including several neurological diseases. Superparamagnetic iron oxide nanoparticles (SPION) and fluorine nanoemulsion (19F) are characterized by low toxicity and good sensitivity, and, as such, are among the most frequently used cell-labeling agents. However, to date, their impact across the various populations of MSCs has not been comprehensively investigated. Thus, the impact of MRI tags (independent variable) has been set as a primary endpoint. The various populations of mouse MSCs in which the effect of tag was investigated consisted of (1) tissue of cell origin: bone marrow vs. adipose tissue; (2) age of donor: young vs. old; (3) cell culture conditions: hypoxic vs. normal vs. normal + ascorbic acid (AA); (4) exposure to acidosis: yes vs. no. The impact of those populations has been also analyzed and considered as secondary endpoints. The experimental readouts (dependent variables) included: (1) cell viability; (2) cell size; (3) cell doubling time; colony formation; (5) efficiency of labeling; and (6) cell migration. We did not identify any impact of cell labeling for these investigated populations in any of the readouts. In addition, we found that the harsh microenvironment of injured tissue modeled by a culture of cells in a highly acidic environment has a profound effect on all readouts, and both age of donor and cell origin tissue also have a substantial influence on most of the readouts, while oxygen tension in the cell culture conditions has a smaller impact on MSCs. A detailed characterization of the factors that influence the quality of MSCs is vital to the proper pursuit of preclinical and clinical studies.
5

The heavy metal accumulation in flood facies deposits in relation to morphology of the Vistula valley between Annopol and Gołab

80%
Falkowska E., Falkowski T.
Annals of Warsaw Agricultural University. Land Reclamation
|
2005
|
tom 36
6

The effect of removal of organic matter, iron oxides and aluminum oxides on the micropore characteristics of the soil clay fraction

80%
Jozefaciuk G., Sokolowska Z.
Polish Journal of Soil Science
|
2003
|
tom 36
|
nr 2
111-119
Surface-micropore properties of the clay fractions of several soils before and after removal of a particular clay fraction components: organic matter, iron oxides and aluminum oxides were studied with an application of the water vapor adsorption-desorption method. Changes in micropore radii, volumes and fractal dimensions were observed after the removal of each component.
7
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

The role of free iron oxides in the association of lead and cadmium in gleyic phaeozems [black earths]

80%
Dabkowska-Naskret H.
Acta Agrophysica
|
2001
|
tom 50
Twelve samples, collected from four pedons of cultivated soils (black earths) were analyzed by sequential extraction to characterize the role of free iron oxides in the association of lead and cadmium. Amounts of lead and cadmium retained varied from 11 to 89.3% of the total Pb and from 4.8 to 48.7% of the total Cd. Metals associated with amorphous Fe oxides are at least ten times higher than with crystalline Fe forms. Under the existing soil conditions (high pH and CaCO3 content) free iron oxides are components of great importance in the Pb and Cd binding process. However, the results may indicate a stronger association of Pb than Cd with iron oxides in the studied black earths.
8

XPS study of Ru-Fe2O3 catalysts for the water-gas shift reaction

80%
Basinska A., Stoch J., Domka F.
Polish Journal of Environmental Studies
|
2003
|
tom 12
|
nr 4
The water-gas shift reaction performance of Fe2O3, Ru/Fe2O3 catalysts and the same compounds doped with sodium ions was studied. An addition of sodium was found to result in an increase of the ruthenium catalyst activity and stabilization of its surface area during the reduction with the reaction mixture. This series of catalysts was examined by XPS method. The addition of sodium and ruthenium causes an increase in the ionicity of the Fe2O3 lattice, manifested as changes in intensity of peaks of the Fe 2p band.
9

Ocena znaczenia tlenkow zelaza i manganu w sorpcjach metali ciezkich w glebach zanieczyszczonych, w swietle ekstrakcji sekwencyjnej

71%
Karczewska A.
Roczniki Państwowego Zakładu Higieny
|
2004
|
tom 55
|
nr Supl.
119-120
Przedstawiono wyniki ilustrujące udział frakcji związanych z tlenkami żelaza i manganu w całkowitej zawartości Cu, Pb, Zn oraz metaloidu As w 20 próbkach gleb zanieczyszczonych, na przykładzie stref ochronnych hut miedzi oraz rejonu polimetalicznego złoża Żeleźniak w Górach Kaczawskich
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.