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Start Over Coverage 243-247

1. Changes of S-adenosyl-L-methionine: magnesium protoporphyrin IX methyltransferase activity in wheat after treatment with S-aminolevulinic acid

Creator:
Yaronskaya, E.B., Shalygo, N.V., Rassaina, V.V., and N.G.
Format:
print
Type:
model:internalpart and TEXT
Language:
Multiple languages
Description:
Following treatment with 5-aminolevulinic acid the activity of iS-adenosyl-L- methionineimagnesium protoporphyrin IX methyltransferase (EC 2.1.1.11) in wheat leaves decreased, whereas monomethyl ester magnesium protoporphyrin IX and protochlorophyllide accumulated. The inactivation of the enzyme was the result of a cessation of the enzyme-product complex dissociation because of the limited number of porphyrin-binding sites on the structural carrier.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

2. Gravitomagnetic explanation of cosmic phenomena without using computers. II. Streaming of plasma along field lines after an impact - even without any energy supply

Creator:
Woyk (Chvojková), E.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
astronomy, gravitomagnetic explanation, and cosmic phenomena
Language:
Czech
Description:
A particle path formula has been derived for charged particles spiralling in extended magnetic and gravity fields, In part I (Book 1, 3CS 1), a stationary dipole- like magnetic field has been considered in which particles of the highest energies slowly but continuousely diffuse up and fill the tops of very extended field lineš, while underescape charged paťticles diffuse down and separate from its top-trapped highTenergy part, Below an impact which squeezes the magnetic tubes the field strength H decreases less thon before or even grows with altitude r, in this region. Consequently the pitch angle of all down spiralling particles increases less now and vice versa; The plasma shifts down, it streams down even without having gained any energy surplus, The bottom of the Van Allen belt shifts down there and rises os Soon as the impact has ceased, This explains the oocurrence and disappearence of aurorae, When the H(r)-variation changes so that H=const is passed, without gravity the mag¬ netic mirror would immediately switch from the bottom on the top, In the gravity field first a "hole effect" gradually reverses the path - between H=const and r“^’ Phenomena occurring now apparently violate some basic physical laws.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

4. Materiálová citlivost magnetooptické elipsometrie v nanostrukturách

Creator:
Postava, Kamil, Hrabovský, David, Životský, Ondřej, and Pištora, Jaromír
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
magnetooptická elipsometrie, materiálová selektivita, and magnetické nanostruktury
Language:
Czech
Description:
In the paper we discuss material selectivity of magneto-optic ellipsometry to components of magnetic nanostructures. Magneto-optical angles (Kerr rotation and ellipticity) have different sensitivity to particular components of nanostructures. A method for separation of their magneto-optic signals using a linear combination of measured hysteresis loops is proposed. The method is supported using the model based on calculation of electromagnetic wave reflection from the nanosystems and experimentaly demonstrated on the structures of: (i) periodic multilayers consisting of NiFe and Co ultrathin films; (ii) magnetically hard nanoparticles in surface layer of amorphous FeNbB ribbons; and (iii) selforganized multiferroincs on basis of Bi- and Co-ferrite. and V článku je diskutována materiálová citlivost magnetooptických elipsometrických metod na dílčí složky magnetických nanostruktur. Magnetooptické úhly (Kerrova rotace a elipticita) vykazují odlišnou citlivost k jednotlivým komponentám nanostruktur. Je navržena metoda separace jejich magnetooptických signálů pomocí lineární kombinace měřených magnetizačních smyček. Princip separace je ověřen modelem založeným na výpočtu odrazu elektromagnetických vln od nanosystémů a experimentálně demonstrován na: (i) periodických multivrstvách obsahujících NiFe a Co ultratenké vrstvy; (ii) magneticky tvrdších nanočásticích v povrchové vrstvě amorfních pásků FeNbB; a (iii) samoorganizovaných multiferoikách na bázi Bi- a Co-feritů.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

5. Separace polárních a longitudinálních komponent magnetizace při magneto-optických měřeních. Lineární a kvadratické Kerrovy jevy

Creator:
Životský, Ondřej, Postava, Kamil, Stupakiewicz, Andrzej, Kurant, Zbigniew, and Maziewski, Andrzej
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
polární, longitudinální a transverzální magnetooptický Kerrův jev, magnetooptická vektorová magnetometrie, and kvadratické magnetooptické jevy
Language:
Czech
Description:
The magneto-optical methods for separation of linear and quadratic effects in reflection are summarized. The dependence of reflection coefficients and magneto-optical angles of Kerr rotation and ellipticity on magnetization components is shown in details. Measuring methods are divided in two groups according to the incidence angle of laser beam. The separation of polar, longitudinal, and transversal contributions is demonstrated on Au/Co/Au system using the method of sample and magnetic field rotation. and Je podán obecný přehled metod sloužících k separaci lineárních a kvadratických magneto-optických jevů při odrazu. Detailně je ukázána závislost reflexních koeficientů a magneto-optických úhlů Kerrovy rotace a elipticity na jednotlivých složkách magnetizace a také na úhlu dopadu světelného svazku na zkoumaný systém, což je jedno z klíčových kritérií výběru metody. Separace polárního, longitudinálního a transverzálního příspěvku je pak demonstrována na sytému Au/Co/Au s využitím metody rotace vzorku a magnetického pole.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public