Importance of body rigidity in the transient stage of the maneuver

2015 ◽  
pp. 347-357
Author(s):  
Charlie Gagliano ◽  
T. Geluk
Keyword(s):  
Transient Stage

scholarly journals De Novo Evolution of Satellite DNA on the Rye B Chromosome

Genetics ◽  
2000 ◽  
Vol 154 (2) ◽  
pp. 869-884 ◽  
Author(s):  
Tim Langdon ◽  
Charlotte Seago ◽  
R Neil Jones ◽  
Helen Ougham ◽  
Howard Thomas ◽  
...  
Keyword(s):  
De Novo ◽  
Indirect Evidence ◽  
Heterochromatic Region ◽  
B Chromosome ◽  
Transient Stage ◽  
Sequence Elements ◽  
Complex Sequences ◽  
Strand Annealing ◽  
Single Sequence ◽  
Specific Sequences

Abstract The most distinctive region of the rye B chromosome is a subtelomeric domain that contains an exceptional concentration of B-chromosome-specific sequences. At metaphase this domain appears to be the physical counterpart of the subtelomeric heterochromatic regions present on standard rye chromosomes, but its conformation at interphase is less condensed. In this report we show that the two sequence families that have been previously found to make up the bulk of the domain have been assembled from fragments of a variety of sequence elements, giving rise to their ostensibly foreign origin. A single mechanism, probably based on synthesis-dependent strand annealing (SDSA), is responsible for their assembly. We provide evidence for sequential evolution of one family on the B chromosome itself. The extent of these rearrangements and the complexity of the higher-order organization of the B-chromosome-specific families indicate that instability is a property of the domain itself, rather than of any single sequence. Indirect evidence suggests that particular fragments may have been selected to confer different properties on the domain and that rearrangements are frequently selected for their effect on DNA structure. The current organization appears to represent a transient stage in the evolution of a conventional heterochromatic region from complex sequences.

Change in Creep Deformation of PST Crystals with Different Stress Axes

2006 ◽  
Vol 980 ◽  
Author(s):  
Xiaohua Min ◽  
Eisaku Sakurada ◽  
Masao Takeyama ◽  
Takashi Matsuo
Keyword(s):  
Creep Rate ◽  
Slip System ◽  
Initial Stress ◽  
Creep Deformation ◽  
Strain Curve ◽  
Stage I ◽  
Stress Axis ◽  
Creep Tests ◽  
Transient Stage ◽  
Stereographic Triangle

AbstractBased on our analysis of a lot of creep rate-strain curves of PST crystals with the different angles between the lamellar plate and the stress axis, designated as ø, it was confirmed that the creep rate and the creep deformation manner strongly depend on the ø. It was supposed that the predominant creep deformation using γ plate during the transient stage is derived by the fully suppression of the operation of another slip systems not parallel to γ plate through α2 plate. It was also confirmed that the initial stress axes of the PST crystals within the standard stereographic triangle move for the [001]-[111] line, and then turn their directions for [111] pole during the transient stage. This moving manner of the stress axis indicated that the first slip system of [101](111) continues to the area near the [001]-[111] line in the standard stereographic triangle, and then, the second slip system of [110](111) operates. By comparing this moving manner to the creep rate-strain curve, it is suggested that the first slip system of [101](111) operates during the Stage I where the light decrease in the creep rate remains, after that, the second slip system of [110](111) appears and leads to steep decrease in the creep rate. This stage was designated as the Stage II. According to this conception, it is supposed that the strain at the end of the Stage I is directly correlated with the angle from the initial stress axis to the [001]-[111] line in the standard stereographic triangle. In this study, this supposition was confirmed by conducting the creep tests at 1148 K/68.6 MPa using two PST crystals with ø of 31° and 34°. The initial stress axis of the PST crystal with ø of 31° locates nearer to the [001]-[-111] line than that of the PST crystal with ø of 34°. The strain at the end of the Stage I of the PST crystal with ø of 31° is half that of the PST crystal with ø of 34°. By analyzing the inverse pole figures of the creep interrupted PST crystals, it was confirmed that the angle from the initial stress axis to the [001]-[111] line is correlated with the strain of the transient stage.

Polarization and density of Na-pumps in the inner ear of the chick embryo during early stages of development

Development ◽  
1987 ◽  
Vol 100 (2) ◽  
pp. 271-278
Author(s):  
F. Giraldez ◽  
J.J. Represa ◽  
L. Borondo ◽  
E. Barbosa
Keyword(s):  
Binding Sites ◽  
Fluid Transport ◽  
Developmental Stages ◽  
Otic Vesicle ◽  
Transient Stage ◽  
Highly Sensitive ◽  
Proliferative Growth ◽  
K Concentration ◽  
Otic Vesicles ◽  
Vectorial Transport

The otic vesicle consists of a pseudostratified epithelium with some features of transporting epithelia. The present work questions whether Na-pumps are polarized in this epithelium and what is the relation between the location or density of pumps and development. This was done by measuring the binding of [3H]ouabain to isolated otic vesicles in developmental stages 16 to 22. The results show the presence of specific ouabain-binding sites located in the inward-facing membrane of the otic vesicle epithelium. Binding was saturable at increasing concentrations of ouabain and was highly sensitive to the external K+ concentration with half-maximal inhibition below 0.5 mM, indicating that the binding sites and Na-pump sites are identical. A transient stage-dependent increase in the density of Na-pumps during the period that precedes growth was observed. Evidence is given against this being directly related to an increased net fluid transport rate despite the fact that pump sites were always polarized throughout these stages. The conclusions are that (1) the otic vesicle epithelium is a polarized structure with the possibility of vectorial transport of solutes and water and (2) the increased number of pumps may operate as a regulatory mechanism during normal proliferative growth.

Cancer and Imputed Infection: Images of ‘The Disease’ among Patients' Relatives

1995 ◽  
Vol 43 (1) ◽  
pp. 1-35 ◽  
Author(s):  
Meira Weiss
Keyword(s):  
Social Construction ◽  
Cancer Patients ◽  
Point Of View ◽  
Transient Stage ◽  
The Social

A description of the social construction of cancer is offered from the cancer patient's relatives' point of view, focusing on the linkage made between contamination and cancer. The ethnography brings together four detailed observations of cancer patients found in a transient stage of remission, who are perceived by their relatives as paradoxically being at one and the same time very good-looking and also very sick. A semiotic explanation to the phenomenon of imputed infection with regard to cancer patients of ‘doubtful appearance’ is discussed, arguing that such imputation can be seen as one of several mechanisms intended to force the disease ‘into the open’ and thus re-align the lost congruence between internal and external.

Transient stage in low-stress viscous creep of titanium and cobalt

Metal Science ◽  
1981 ◽  
Vol 15 (10) ◽  
pp. 442-446 ◽  
Author(s):  
G. Malakondaiah ◽  
P. Rama Rao
Keyword(s):  
Transient Stage

An occurrence of interstratified kaolinite-smectite minerals in a red-black soil toposequence

Clay Minerals ◽  
1981 ◽  
Vol 16 (2) ◽  
pp. 195-201 ◽  
Author(s):  
A. J. Herbillon ◽  
R. Frankart ◽  
L. Vielvoye
Keyword(s):  
Iron Oxides ◽  
Major Part ◽  
Central Africa ◽  
Black Soil ◽  
Transient Stage ◽  
X Ray ◽  
Chemical Treatments ◽  
Field Evidence

AbstractInterstratified kaolinite-smectite minerals form the major part of a pedon transitional between ‘red’ kaolinitic and black smectitic soils in a soil toposequence derived from basalt in Burundi, Central Africa. These interstratified kaolinite-smectites have many X-ray, morphological and chemical features in common with ‘tabular halloysite’. Modifications to the 00l spacings of these minerals brought about by thermal and chemical treatments, however, show that they are not halloysite but consist of a mixture of ∼70% kaolinite and 30% smectite randomly interstratified. Field evidence indicates that these clays can be considered as a transient stage in the overall reaction smectite→kaolinite + iron oxides, which takes place in this landscape whenever the slope gradients give rise to better drainage conditions.

Modelling of the Oxygen Transport through MIEC Membrane in Transient Stage

2014 ◽  
Vol 90 ◽  
pp. 72-77
Author(s):  
Camille Gazeau ◽  
Eric Blond ◽  
Mickaël Reichmann ◽  
Pierre Marie Geffroy ◽  
Thierry Chartier ◽  
...  
Keyword(s):  
Chemical Potential ◽  
Thermal Strain ◽  
Bulk Diffusion ◽  
Potential Drop ◽  
Oxygen Activity ◽  
Energetic Cost ◽  
Surface Exchange ◽  
Transient Stage ◽  
Expansion Test ◽  
Isothermal Expansion

The transient stage is critical due to the stress induced by the chemical and thermal strain. In order to predict this strain, the oxygen activity field through the membrane needs to be known. Usually, the membrane is divided into three zones: the bulk where diffusion takes place and the two surfaces where exchanges between atmosphere and membrane take place. Oxygen bulk diffusion is well described by the Wagner theory. A consensus has not yet emerged regarding the surface exchange models proposed in the literature. Moreover, these models describe the permanent state, and cannot be extended to the transient stage. A new macroscopic surface exchange model which allows computing transient stage is proposed. This model assumed that the oxygen flux is governed by the association/dissociation of adsorbed oxygen and by the high energetic cost of oxygen reduction/oxidation. Then, the balance of transient specie only present on the surface is introduced to account for these two phenomena. The oxygen activity fields predicted by the proposed model are in agreement with the measures of chemical potential drop between the membrane and the atmosphere in permanent state. Transient stage measured during isothermal expansion test is partially reproduced.

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