On theK-mesonic interaction of muons

Iron(III) Oxides from Thermal ProcessesSynthesis, Structural and Magnetic Properties, Mössbauer Spectroscopy Characterization, and Applications

“…Many researchers studied the mechanism and kinetics of these complex reactions that can be classified into several groups according to the nature of the initial iron-bearing phase. Examples are as follows: the thermal decompositions of iron(III) compounds including FeO(OH), [7][8][9][10][11][12][13][14][15][16][17][18][19][20] Fe 2 (C 2 O 4 ) 3 , [21][22][23] Fe 2 (SO 4 ) 3 , [24][25][26] Fe(OH) 3 , 27 (NH 4 ) 2 Fe-(SO 4 ) 2 , 28 Fe(OH)SO 4 , [29][30][31][32] NaFe(SO 4 ) 2 , Na 3 Fe(SO 4 ) 3 , 33,34 FeCl 3 , 35,36 Fe(OH)CO 3 , 37 and NH 4 Fe(C 2 O 4 ) 2 ; 38 the thermally induced oxidation of metal iron, 39,40 Fe 3 O 4 , 41,42 and iron(II) compounds including FeCl 2 , 43 FeSO 4 , [43][44][45][46][47][48][49][50][51] FeS, 52,…”

“…The mechanism of Fe 2 O 3 formation from the iron precursor is very often different. For example, iron(III) oxide can be the product of the following: one-step transformation during thermal outgassing of Fe phases containing SO [43][44][45][46][47][48][49][50][51] a process accompanied by a change in the iron valency, e.g., 2FeCl 2 + 3 / 2 O 2 f Fe 2 O 3 + 2Cl 2 ; 43 and a process in which the iron(III) oxide is formed as one of the products of a solid-state reaction, for example, Concerning the relation between the original iron precursor and the crystal structure of the primarily formed Fe 2 O 3 , no general dependence has been found. In some cases, the Fe 2 O 3 particles showed the tendency to maintain the symmetry of the iron environment and some structural or morphological features of the original compound.…”

“…1,8,26 Depending on the structure of the primary Fe 2 O 3 , thermal processes can be divided into four other groups. The structure of the primary product is that of R-Fe 2 O 3 (e.g., oxidation of FeCl 2 ), 43 β-Fe 2 O 3 (decomposition of Na 3 Fe(SO 4 ) 3 ), 34 and γ-Fe 2 O 3 (conversion of lepidocrocite), 1,73,74 or more polymorphs can be formed as primary phases depending on experimental conditions (e.g., conversion of Fe 2 (SO 4 ) 3 with possible formation of β-Fe 2 O 3 or γ-Fe 2 O 3 ). 91 Although the thermal transformations of iron-bearing materials can be classified into several of the abovementioned groups, the general description (or the physical model) of each individual reaction group is very difficult.…”

In situ studies of the oxidation of nickel electrodes in alkaline solution

“…They are used as the positive electrode for Ni-Cd, Ni-H 2 and Ni-metal hydride batteries. Ni electrodes also find application as anodes in fuel cells and as electrocatalysts, for instance in the oxidation of alcohols [1][2][3][4][5]. Ni oxide, hydroxide and oxyhydroxide electrodes can be prepared in a large number of ways, including by electrochemical growth, chemical precipitation or formation from the gas phase or under ultra-high vacuum (UHV) conditions.…”

Corticosterone increases the synthesis of a soluble protein in pituitary glands from adrenalectomized male rats which precipitates with anti‐rat growth antiserum

“…However, as there are substantial differences between GHs cells and intact rat pituitary glands, the effect of corticosterone on induction of specific soluble proteins was investigated in intact rat pituitary glands. The methodology of double isotope incorporation and SDS-polyacrylamide gel electrophoresis, successfully used to demonstrate estrogen-induced proteins in the uterus [2] and hypothalamus [3,4], was applied. We report here that treatment of adrenalectomized male rats with corticosterone increases the synthesis of a specific soluble protein with a relative molecular mass (i'kfr) 24 000 on SDS-urea polyacrylamide gels, identical in size to the form of rGH made in GHs cells [5].…”