The Bakerian lecture.— On the forms of equipotential curves and surfaces and on lines of flow

1876 ◽  
Vol 24 (164-170) ◽  
pp. 1-32
Keyword(s):  
Cross Section ◽  
Outer Boundary ◽  
The Other ◽  
Curves And Surfaces ◽  
Conducting Wire ◽  
The Wire ◽  
The Cross ◽  
Current Flows ◽  
The One

When any portion of a conducting-wire which joins the two poles of a voltaic battei'y is increased in size, the resistance of the circuit is diminished and a greater current flows through the wire ; and as any increase in the cross section of any portion of the wire causes a corre­sponding increase in the current, it is clear that there is no part of the conducting-wire through which some portion of the current does not flow from the one pole to the other; and the outer boundary of such a wire will be a line of flow. A line of flow is a line drawn in a conductor which indicates at every point of it the direction of the current at that point. A portion of the conductor completely enclosed by lines of flow may be termed a tube of flow.

A New Approach to the Demonstration of Oxidase-Localization Using Tannic Acid Or Catechin

1973 ◽  
Vol 31 ◽  
pp. 698-699
Author(s):  
V. Mizuhira ◽  
Y. Futaesaku
Keyword(s):  
Cross Section ◽  
Tannic Acid ◽  
Elastic Fiber ◽  
The Other ◽  
New Approach ◽  
Tissue Block ◽  
Active Reaction ◽  
The Cross

Previously we reported that tannic acid is a very effective fixative for proteins including polypeptides. Especially, in the cross section of microtubules, thirteen submits in A-tubule and eleven in B-tubule could be observed very clearly. An elastic fiber could be demonstrated very clearly, as an electron opaque, homogeneous fiber. However, tannic acid did not penetrate into the deep portion of the tissue-block. So we tried Catechin. This shows almost the same chemical natures as that of proteins, as tannic acid. Moreover, we thought that catechin should have two active-reaction sites, one is phenol,and the other is catechole. Catechole site should react with osmium, to make Os- black. Phenol-site should react with peroxidase existing perhydroxide.

Diversity and evolution of stem structure in Eleocharis (Cyperaceae)

Rodriguésia ◽  
2021 ◽  
Vol 72 ◽  
Author(s):  
Jaqueline Priscila Bispo de Almeida Cardoso Marcondes ◽  
Rafael Trevisan ◽  
Maria Cecilia de Chiara Moço ◽  
Cleusa Bona
Keyword(s):  
Cross Section ◽  
Morphological Analysis ◽  
Plant Size ◽  
Molecular Data ◽  
The Other ◽  
Air Gaps ◽  
Ecological Aspects ◽  
The Cross ◽  
Poorly Drained Soils ◽  
Stem Structure

Abstract Eleocharis (Cyperaceae) includes more than 300 species of perennial or annual herbs, frequently found on poorly drained soils. The species are morphologicaly similar, and the taxonomy is difficult because their vegetative and reproductive structures are very reduced. Previous study on the stem architecture in the subgenus Limnochloa showed that anatomical features help in the interpretation of the evolution, taxonomy and ecological aspects of the group. Our objectives were to add new characters from the stem (= culm) structure, to explore the characters in a greater number of Eleocharis species, representatives of the other subgenera, and add these data in a new phylogenetic analysis with molecular data. The study covered 68 species obtained from herbaria and fixed material. In addition to the stem architecture, the internal organization of the tissues, the cross-section format, the presence or absence of stretched cells in aerenchyma air gaps and the plant size were included in the morphological analysis. Our data confirm that spongy aerenchyma pattern is the ancestral condition while the mixed and septate patterns occurred independent and punctually. Only the cross-section format was variable among specimens while the other characters were uniform and relevant for taxonomic use.

Note on Losses in Cable Sheaths

1928 ◽  
Vol 24 (1) ◽  
pp. 65-73 ◽  
Author(s):  
F. W. Carter
Keyword(s):  
Cross Section ◽  
Eddy Current ◽  
Distribution Systems ◽  
Power Cables ◽  
Circulating Current ◽  
Outer Sheath ◽  
The Cross ◽  
Current Flows ◽  
Made In

In a recent communication to the Society, the author referred to cable-sheath losses, and gave formulae for computing them in certain cases. These appertained to power cables in which were comprised a group of conductors, arranged symmetrically and encased in a single conducting sheath. In some distribution systems, however, the conductors for the several phases are encased in separate lead sheaths, which are either laid in proximity as separate cables, or grouped and comprehended in an outer sheath. The analysis previously given does not include such cases directly. Moreover, it is common practice either to lay the elementary cables with sheaths in contact, or to bond the sheaths together at the ends of suitable sections, in order to prevent differences of potential between them; and, when this is done, a circulating current flows in the circuit of the sheaths and bonds, sufficient to maintain equality of potential between the several sheaths. This current, to which reference was made in the former paper, is additional to the eddy current discussed therein, the integral of which over the cross section of the sheath is zero. It is for convenience here referred to as the “circulating current,” to distinguish it from the “eddy current,” although there is no such distinction between them as the names imply.

scholarly journals FERTILITY AND SOCIAL SECURITY

2015 ◽  
Vol 81 (3) ◽  
pp. 261-299 ◽  
Author(s):  
Michele Boldrin ◽  
Mariacristina De Nardi ◽  
Larry E. Jones
Keyword(s):  
Social Security ◽  
Old Age ◽  
Cross Section ◽  
Developed Countries ◽  
The Other ◽  
Strongly Correlated ◽  
Jones Model ◽  
Key Factor ◽  
Broad Cross Section ◽  
The One

Abstract:The data show that an increase in government provided old-age pensions is strongly correlated with a reduction in fertility. What type of model is consistent with this finding? We explore this question using two models of fertility, the one by Barro and Becker (1989), and the one inspired by Caldwell and developed by Boldrin and Jones (2002). In the Barro and Becker model parents have children because they perceive their children’s lives as a continuation of their own. In the Boldrin and Jones’ framework parents procreate because the children care about their old parents’ utility, and thus provide them with old age transfers. The effect of increases in government provided pensions on fertility in the Barro and Becker model is very small, and inconsistent with the empirical findings. The effect on fertility in the Boldrin and Jones model is sizeable and accounts for between 55 and 65% of the observed Europe–US fertility differences both across countries and across time and over 80% of the observed variation seen in a broad cross section of countries. Another key factor affecting fertility the Boldrin and Jones model is the access to capital markets, which can account for the other half of the observed change in fertility in developed countries over the last 70 years.

DISTRIBUTION OF ELEMENTS IN HUMAN SPINAL CORD

1992 ◽  
Vol 02 (04) ◽  
pp. 433-440 ◽  
Author(s):  
MASAE YUKAWA ◽  
T. KOBAYASHI ◽  
Y. QIU ◽  
N. KAMEDA ◽  
Y. ITO ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Cross Section ◽  
The Other ◽  
Current Understanding ◽  
Human Spinal Cord ◽  
Lumbar Level ◽  
Distribution Of Elements ◽  
The Cross

The distribution of elements in human spinal cord was investigated on unfixed frozen cord material using PIXE technique. Distribution of Cu, Zn and Fe were not uniform in the cross section of the spinal cord and concentrations of these elements were higher in the anterior gray horn than in the other areas, while K and Cl distributed uniformly. The content of K changed along the spinsl cord from the cervical to the lumbar level. These findings are discussed in relation to current understanding of the physiology of the spinal cord.

Prediction and economic theory

1986 ◽  
Vol 407 (1832) ◽  
pp. 3-23 ◽  
Keyword(s):  
Economic Theory ◽  
The Other ◽  
Systematic Analysis ◽  
The Cross ◽  
The One ◽  
Fundamental Tension ◽  
Theory Use

The role of prediction in economics involves a fundamental tension. On the one hand, much of economics is concerned with prediction. On the other, economic predictions are notoriously unreliable. It is, in fact, tempting to see the economist as the trapeze-performer who tends to miss the cross-bar, or as the jockey who keeps falling off his horse. Whether or not such characterization is fair, there can be no doubt that the nature and genesis of this fundamental tension, and its implications, do call for systematic analysis and assessment. The aim of this paper is to attempt a brief examination of these issues. There is a sequence of questions to be faced. How central is prediction to economics ? Why are economic predictions so difficult ? What techni­ques does economic theory use to cope with these difficulties ? Are these techniques sound ? How does economic theory relate to practice ? I shall take up these questions in turn.

Improving the Controlled Cooling after Wire Rod Rolling in the Finishing Block of Stands

2016 ◽  
Vol 870 ◽  
pp. 620-624 ◽  
Author(s):  
S.I. Platov ◽  
V.A. Nekit ◽  
N.N. Ogarkov
Keyword(s):  
Cross Section ◽  
Rolling Mill ◽  
Controlled Rolling ◽  
Controlled Cooling ◽  
Two Phase ◽  
Wire Rod ◽  
Rod Rolling ◽  
Cooling Design ◽  
The Wire ◽  
The Cross

The thermal regime of rolling in the finishing block of stands and the cooling path after rolling largely determines the mechanical properties of the wire rod. One of the main challenges that must be addressed in the cooling design phase is reduction of temperature non-uniformity over the cross section of a wire rod. The use of adjustable cooling allows getting closer in finishing rolling mill to the regimes of the controlled rolling, thermo mechanical processing and two-phase rolling, which greatly extend the capabilities of the mill in the obtaining of high consumer properties of products. The paper presents the theory and experimental analysis of controlled cooling after rolling in the finishing rolling mill, with the aim to rise temperature heterogeneity over the cross section of the wire rod.

scholarly journals Sacrilegious character of «The cross on Saturn» in the self-titled novel of Oles Ulianenko

2020 ◽  
Keyword(s):  
Research Methodology ◽  
The Self ◽  
The Other ◽  
Literary Analysis ◽  
The Novel ◽  
Aesthetic Appeal ◽  
Inner World ◽  
The Cross ◽  
Professional Evaluation ◽  
The One

Oles Ulianenko, one of the most talented and controversial Ukrainian writers of these days, has been dead for ten years. His literary works did not receive any appropriate professional evaluation though because literary scholars and critics applied either the wrong or unproductive research methodology due to some objective and subjective reasons. The aim of the article is to suggest an alternative, in comparison to traditional variants, theoretical literary analysis which is grounded on the principles of the corporal-mimetic method to interpret fiction done on the extremely controversial novel “The Cross on Saturn” by O. Ulianenko. Having analyzed the idea and artistic content of the novel “The Cross on Saturn”, the conclusion is made that, first, the book characters seem to function as simulacra of their shallowness because they lack the depth of inner world. But despite this fact, despite parody, superficial dialogues and surrogate actions, the main characters of the novel and the peripeteia, they find themselves in, do not lose aesthetic appeal because these characters do not need deep inner world since their function is not determined by what these trivial characters reflect in the text mirror but by what the text mirror reflects in them. Second, the shallowness is filled with the content conditioned by the incest precedent which provides the basis of Oles Ulianenko’s novel to the degree to what the writer creates the tragedy in its exact, namely ancient Geek, meaning of the notion according to which tragedy is, on the one hand, a story determined by an utterly artificial form and content and, on the other hand, it is a story which does not simply end by death, it is a story which cannot end by anything else but death. It seems as if nothing but tragedy could make it impossible for a man to have their animal essence to supersede their human part.

scholarly journals GENERAL CASE OF REINFORCED CONCRETE ROD ELEMENTS CALCULATION USING THE DIAGRAM METHOD

2021 ◽  
Vol 93 (1) ◽  
pp. 26-37
Author(s):  
O.V. RADAYKIN ◽  
◽  
L.S. SABITOV ◽  
L.SH. AKHTYAMOVA ◽  
T.P. ARAKCHEEV ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Cross Section ◽  
Longitudinal Force ◽  
Internal Force ◽  
The Other ◽  
Bending Moments ◽  
Diagram Method ◽  
The Cross ◽  
Three Components

In SP 63.13330 the general calculation case for the diagram method is oblique off-center compression, which takes into account only three components of internal force factors in the cross section: the longitudinal force-Nz – and two bending moments relative to the corresponding axes – Mx and My. The other three components-the QX and Qy transfer forces and the MZ torque – are left out of consideration. In addition, for this case, the search in the available literature, including the founders of the diagram method, for the output of calculation formulas was not successful – in all sources they are given in ready-made form without evidence. This article is intended to try to fill in these gaps. For this purpose, based on the expressions for rod displacements that are generally accepted in mechanics, in particular on the Mora integral of displacements, the resolving expressions of the diagram method are obtained in the most general form.

The Shock Tube

1954 ◽  
Vol 58 (524) ◽  
pp. 541-546 ◽  
Author(s):  
B. D. Henshall
Keyword(s):  
Shock Tube ◽  
Cross Section ◽  
Research Tool ◽  
The Other ◽  
Physical Description ◽  
The Cross

In recent years interest has been revived in an apparatus which was first developed more than fifty years ago. This apparatus, which is known today as a shock tube, is a very useful research tool, the versatility of which is not generally appreciated in this country. In this paper the author attempts to give a clear physical description of the flow in a shock tube and a review of the problems which may be investigated by means of this apparatus.Basically, a shock tube consists of a simple fabricated duct which may be closed or open at one end, and closed at the other end. A diaphragm divides this duct into two compartments which initially contain gases at different pressures. In a conventional shock tube the cross-section is constant, the ends are closed, and air is used on both sides of the diaphragm (Fig. 1).

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