Transformations of the Domain-Wall Fine Structure in the Course of Magnetization Change Processes in Co(0001) Film

2021 ◽  
Vol 122 (3) ◽  
pp. 213-222
Author(s):  
I. M. Izhozherov ◽  
E. Zh. Baikenov ◽  
V. V. Zverev
Keyword(s):  
Fine Structure ◽  
Domain Wall ◽  
Change Processes ◽  
Magnetization Change

Dynamics of a Néel domain wall with a fine structure in rare-earth orthoferrites

2001 ◽  
Vol 43 (7) ◽  
pp. 1257-1259 ◽  
Author(s):  
E. G. Ekomasov ◽  
M. A. Shabalin
Keyword(s):  
Fine Structure ◽  
Rare Earth ◽  
Domain Wall ◽  
Néel Domain Wall

scholarly journals TIME VARIATION OF THE FINE STRUCTURE CONSTANT IN THE SPACETIME OF A COSMIC DOMAIN WALL

2007 ◽  
Vol 22 (14) ◽  
pp. 1013-1017 ◽  
Author(s):  
L. CAMPANELLI ◽  
P. CEA ◽  
L. TEDESCO
Keyword(s):  
Fine Structure ◽  
Gravitational Field ◽  
Domain Wall ◽  
Time Variation ◽  
Structure Constant ◽  
Time Dependent ◽  
Fine Structure Constant ◽  
Fixed Position ◽  
Stringent Constraint ◽  
Severe Limit

The gravitational field produced by a domain wall acts as a medium with spacetime-dependent permittivity ε. Therefore, the fine structure constant α=e2/4πε will be a time-dependent function at fixed position. The most stringent constraint on the time-variation of α comes from the natural reactor Oklo and gives [Formula: see text]. This limit constrains the tension of a cosmic domain wall to be less than σ ≲ 10-2 MeV 3, and then represents the most severe limit on the energy density of a cosmic wall stretching our Universe.

scholarly journals Imaging the Fine Structure of a Magnetic Domain Wall in a Ni Nanocylinder

Nano Letters ◽  
2013 ◽  
Vol 13 (5) ◽  
pp. 2053-2057 ◽  
Author(s):  
Nicolas Biziere ◽  
Christophe Gatel ◽  
Rémy Lassalle-Balier ◽  
Marie Claude Clochard ◽  
Jean Eric Wegrowe ◽  
...  
Keyword(s):  
Fine Structure ◽  
Domain Wall ◽  
Magnetic Domain ◽  
Magnetic Domain Wall

scholarly journals Fine Structure Constant, Domain Walls, and Generalized Uncertainty Principle in the Universe

2011 ◽  
Vol 2011 ◽  
pp. 1-12
Author(s):  
Luigi Tedesco
Keyword(s):  
Fine Structure ◽  
Hydrogen Atom ◽  
Domain Wall ◽  
Uncertainty Principle ◽  
Ground State ◽  
Domain Walls ◽  
Generalized Uncertainty Principle ◽  
Structure Constant ◽  
Fine Structure Constant ◽  
The Universe

We study the corrections to the fine structure constant from the generalized uncertainty principle in the spacetime of a domain wall. We also calculate the corrections to the standard formula to the energy of the electron in the hydrogen atom to the ground state, in the case of spacetime of a domain wall and generalized uncertainty principle. The results generalize the cases known in literature.

Fine Structure of Platelet Interaction with a New Microcrystalline Collagen Preparation

1974 ◽  
Vol 32 ◽  
pp. 58-59
Author(s):  
W. H. Zucker ◽  
R. G. Mason
Keyword(s):  
Fine Structure ◽  
Platelet Aggregation ◽  
Hydrochloric Acid ◽  
Whole Blood ◽  
Platelet Adhesion ◽  
Hemostatic Agent ◽  
Native Collagen ◽  
Fibrillar Morphology ◽  
Clinical Interest ◽  
New Form

Platelet adhesion initiates platelet aggregation and is an important component of the hemostatic process. Since the development of a new form of collagen as a topical hemostatic agent is of both basic and clinical interest, an ultrastructural and hematologic study of the interaction of platelets with the microcrystalline collagen preparation was undertaken.In this study, whole blood anticoagulated with EDTA was used in order to inhibit aggregation and permit study of platelet adhesion to collagen as an isolated event. The microcrystalline collagen was prepared from bovine dermal corium; milling was with sharp blades. The preparation consists of partial hydrochloric acid amine collagen salts and retains much of the fibrillar morphology of native collagen.

Pituitary Follicular Cells: Their Origin, Possible Function and Fate

1974 ◽  
Vol 32 ◽  
pp. 34-35
Author(s):  
E. Horvath ◽  
K. Kovacs ◽  
G. Penz ◽  
C. Ezrin
Keyword(s):  
Fine Structure ◽  
Secretory Granules ◽  
Follicular Cells ◽  
Human Pituitary ◽  
Rat Pituitary ◽  
Pituitary Glands ◽  
Junctional Complexes

Follicular structures, in the rat pituitary, composed of cells joined by junctional complexes and possessing few organelles and few, if any, secretory granules, were first described by Farquhar in 1957. Cells of the same description have since been observed in several species including man. The importance of these cells, however, remains obscure. While studying human pituitary glands, we have observed wide variations in the fine structure of follicular cells which may lead to a better understanding of their morphogenesis and significance.

Ultrastructure and Staining of Developing Elastic Tissue

1971 ◽  
Vol 29 ◽  
pp. 244-245
Author(s):  
E. N. Albert
Keyword(s):  
Fine Structure ◽  
Phosphotungstic Acid ◽  
Staining Method ◽  
Rat Aorta ◽  
Uranyl Acetate ◽  
The Other ◽  
Elastic Fibers ◽  
Elastic Tissue ◽  
Lead Citrate ◽  
New Born

Silver tetraphenylporphine sulfonate (Ag-TPPS) was synthesized in this laboratory and used as an electron dense stain for elastic tissue (Fig 1). The procedures for the synthesis of tetraphenylporphine sulfonate and the staining method for mature elastic tissue have been described previously.The fine structure of developing elastic tissue was observed in fetal and new born rat aorta using tetraphenylporphine sulfonate, phosphotungstic acid, uranyl acetate and lead citrate. The newly forming elastica consisted of two morphologically distinct components. These were a central amorphous and a peripheral fibrous. The ratio of the central amorphous and the peripheral fibrillar portion changed in favor of the former with increasing age.It was also observed that the staining properties of the two components were entirely different. The peripheral fibrous component stained with uranyl acetate and/or lead citrate while the central amorphous portion demonstrated no affinity for these stains. On the other hand, the central amorphous portion of developing elastic fibers stained vigorously with silver tetraphenylporphine sulfonate, while the fibrillar part did not (compare figs 2, 3, 4). Based upon the above observations it is proposed that developing elastica consists of two components that are morphologically and chemically different.

The Dermal Glands of Rhodnius Prolixus

1969 ◽  
Vol 27 ◽  
pp. 258-259
Author(s):  
J. E. Lai-Fook
Keyword(s):  
Fine Structure ◽  
Secretory Activity ◽  
Rhodnius Prolixus ◽  
Outermost Layer ◽  
Cement Layer ◽  
Dermal Glands

Dermal glands are epidermal derivatives which are reported to secrete either the cement layer, which is the outermost layer of the epicuticle or some component of the moulting fluid which digests the endocuticle. The secretions do not show well-defined staining reactions and therefore they have not been positively identified. This has contributed to another difficulty, namely, that of determining the time of secretory activity. This description of the fine structure of the developing glands in Rhodnius was undertaken to determine the time of activity, with a view to investigating their function.

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