Preliminary note on an annual term in the right ascensions

1919 ◽  
Vol 32 ◽  
pp. 1
Author(s):  
M. L. Zinuner
Keyword(s):  
Preliminary Note ◽  
Annual Term ◽  
The Right

scholarly journals Preliminary note on the anatomy of the umbilical cord

1876 ◽  
Vol 24 (164-170) ◽  
pp. 417-440 ◽  
Keyword(s):  
Umbilical Cord ◽  
Human Umbilical Cord ◽  
Preliminary Note ◽  
Fixed Axis ◽  
The Subject ◽  
The Right ◽  
Black Sphere ◽  
Mechanical Arrangement ◽  
Normal Spiral ◽  
The Revolution

The peculiar twisted appearance of the human umbilical cord has received much attention from anatomists, and has been the subject of much ingenious speculation. According to Velpeau (‘ Embryologie’) the torsion begins as early as the seventh or eighth week, whilst Burdach has not observed it earlier than the tenth. I have repeatedly seen fœtuses, apparently of the twelfth and thirteenth week, in which no appearance of twisting was observable in the cord, though one of the most perfectly twisted cords in my possession belongs to a fœtus of certainly not more than thirteen weeks’ development. Velpeau attributes the twisting simply to the rotation of the fœtus. Schroeder Van der Kolk supposes that the blood flowing in the arteries exerts a backstroke influence on the pelvis of the swimming fœtus, thus determining its revolution in one direction or the other, as the arteries are to be found to the right or left of the vein. In order to dismiss this view we have only to recollect that the umbilicus could not in any way become a fixed axis, and that the mechanical arrangement of the heart, in the non-separation of its streams, would yield but a very weak impulse until very late in pregnancy. The revolution of the fœtus is not known to occur, though its occurrence is probable. Such revolution occurs in the spawn of the frog as early as the first segmentation of the black sphere; but then it is evidently the result of the necessity there is for an equal exposure of all parts of the embryo to the action of light and heat, just as the germinal spot is always uppermost in the bird’s egg. No such necessity exists in the persistently included mammalian ovum, and the revolution of the fœtus cannot be accepted. If it did occur it is highly improbable that the revolutions could number only from four to eighteen, these being the ranges I have noticed in a large number of fully developed cords. Another objection to Schroeder’s hypothesis is that, as a matter of fact, the arteries leave the omphalic ring nearly always below the vein and symmetrically arranged in relation to it. Their passage to one or other side of it is seldom apparent till the external dermal ring has been reached. Also I have seen the first revolution of the arteries pass from right to left, after which they suddenly bent on themselves and passed up the cord in an irregularly straight course, whilst the vein maintained the normal spiral. Further, I have seen the arteries reverse their course about the middle of the cord, though the vein maintained the uniform spiral.

Note on an annual term in the right ascensions

1921 ◽  
Vol 33 ◽  
pp. 201 ◽  
Author(s):  
M. L. Zinuner
Keyword(s):  
Annual Term ◽  
The Right

Note on an annual term in the right ascensions

1920 ◽  
Vol 32 ◽  
pp. 169
Author(s):  
M. L. Zinuner
Keyword(s):  
Annual Term ◽  
The Right

Two Mesolithic ‘floors’ in the Ebbsfleet Valley of the Lower Thames

1938 ◽  
Vol 18 (4) ◽  
pp. 397-401 ◽  
Author(s):  
J. P. T. Burchell
Keyword(s):  
Characteristic Form ◽  
Upper Palaeolithic ◽  
Common Occurrence ◽  
Preliminary Note ◽  
Alluvial Deposits ◽  
The Right

In view of the stimulating discoveries made by Messrs. Schwantes and Rust in the districts of Hamburg and Kiel, I am prompted to write a preliminary note on two Mesolithic ‘floors’ recently discovered in the Ebbsfleet Valley, west of Northfleet, on the right bank of the Lower Thames. The horizons in question are located in a stoneless calcareous silt containing shells of both land and freshwater types. Subsequent erosion phases have considerably denuded the silt, which, at the present time, is overlain by some 6 ft. of alluvial deposits. The marked differences between the implements of the lower and upper ‘floors’ are best summarized as under:1. The artifacts from the lower ‘floor’ are invariably patinated blue or white, whilst those from the upper ‘floor’ are always in an unaltered condition.2. The blades from the lower ‘floor’ are much longer and broader than are those from the upper ‘floor’; some of the former attain 7½ in. in length (figs. 1, 2, 3, 4, and 5).3. Core-scrapers are not present in the lower ‘floor’ though of common occurrence in the upper ‘floor’.4. The gravers from the lower ‘floor’ (figs. 6 and 7) approximate more closely to those of Upper Palaeolithic times than do the examples from the upper ‘floor’ (fig. 8).5. Though none has so far been recovered from the lower ‘floor’, the upper ‘floor’ has yielded shouldered points (figs. 9 and 10), a characteristic form in the Hamburg culture.

Preliminary Note on the Masses of the Electron, the Proton, and the Universe

1931 ◽  
Vol 27 (1) ◽  
pp. 15-19 ◽  
Author(s):  
A. S. Eddington
Keyword(s):  
Arbitrary Constant ◽  
Degrees Of Freedom ◽  
Wave Mechanics ◽  
Preliminary Note ◽  
Numerical Predictions ◽  
The Right ◽  
The Masses ◽  
The Universe ◽  
Made In ◽  
Number Of Particles

In an investigation which I hope to publish shortly, I think I have been able to improve my theory of the constanthc/2πe2and to bring it at last into a precise form. No alteration is made in the value 137 obtained in the work already published. The recent advance has been mainly due to the fresh light thrown on the foundations of wave-mechanics by Dr Dirac's book. With a fuller understanding of the “theory of 137” it has been possible to discern opportunities for extension in several directions, and it is with these developments that the present paper deals. They are still in a rudimentary state; but since the theory appears to give correctly either accurate or approximate values of the masses of the electron, the helium atom, and the cosmos in terms of the mass of the proton, it would seem to be on the right lines. Moreover the principle of “ignoration of degrees of freedom” on which the numerical predictions depend is strongly suggested by the theory of the constant 137. If my view is right the only arbitrary constant of nature is the number of particles in the universe—if the numberisarbitrary.

Investor-State Dispute Settlement under NAFTA Chapter 11: The Shape of Things to Come?

1998 ◽  
Vol 35 ◽  
pp. 263-290
Author(s):  
J. Anthony VanDuzer
Keyword(s):  
Free Trade Agreement ◽  
Dispute Settlement ◽  
Trade Agreement ◽  
Minimum Standards ◽  
The North ◽  
State Behaviour ◽  
Nafta Chapter 11 ◽  
To Come ◽  
The Right

SummaryRecently, there has been a proliferation of international agreements imposing minimum standards on states in respect of their treatment of foreign investors and allowing investors to initiate dispute settlement proceedings where a state violates these standards. Of greatest significance to Canada is Chapter 11 of the North American Free Trade Agreement, which provides both standards for state behaviour and the right to initiate binding arbitration. Since 1996, four cases have been brought under Chapter 11. This note describes the Chapter 11 process and suggests some of the issues that may arise as it is increasingly resorted to by investors.

What face familiarity feelings say about the lateralization of specific entities within the core system

2019 ◽  
Vol 42 ◽  
Author(s):  
Guido Gainotti
Keyword(s):  
Temporal Lobe ◽  
Memory System ◽  
Core System ◽  
The Core ◽  
Memory Traces ◽  
Specific Memory ◽  
Target Article ◽  
Temporal Structures ◽  
The Right

Abstract The target article carefully describes the memory system, centered on the temporal lobe that builds specific memory traces. It does not, however, mention the laterality effects that exist within this system. This commentary briefly surveys evidence showing that clear asymmetries exist within the temporal lobe structures subserving the core system and that the right temporal structures mainly underpin face familiarity feelings.

Study of charge transfer in FeTi

1983 ◽  
Vol 41 ◽  
pp. 296-297
Author(s):  
J. Taft∅
Keyword(s):  
Charge Transfer ◽  
Charge Distribution ◽  
Electron Scattering ◽  
Periodic System ◽  
Electron Distribution ◽  
Scattering Amplitude ◽  
Transition Elements ◽  
Hartree Fock ◽  
Cscl Structure ◽  
The Right

It is well known that for reflections corresponding to large interplanar spacings (i.e., sin θ/λ small), the electron scattering amplitude, f, is sensitive to the ionicity and to the charge distribution around the atoms. We have used this in order to obtain information about the charge distribution in FeTi, which is a candidate for storage of hydrogen. Our goal is to study the changes in electron distribution in the presence of hydrogen, and also the ionicity of hydrogen in metals, but so far our study has been limited to pure FeTi. FeTi has the CsCl structure and thus Fe and Ti scatter with a phase difference of π into the 100-ref lections. Because Fe (Z = 26) is higher in the periodic system than Ti (Z = 22), an immediate “guess” would be that Fe has a larger scattering amplitude than Ti. However, relativistic Hartree-Fock calculations show that the opposite is the case for the 100-reflection. An explanation for this may be sought in the stronger localization of the d-electrons of the first row transition elements when moving to the right in the periodic table. The tabulated difference between fTi (100) and ffe (100) is small, however, and based on the values of the scattering amplitude for isolated atoms, the kinematical intensity of the 100-reflection is only 5.10-4 of the intensity of the 200-reflection.

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