Lines of Force and Chemical Action of Light

C. TIMIRIAZEFF

doi:10.1038/082067b0

The Direct Optical Projection of Electro-Dynamic Lines of Force and other Electro-Dynamic Phenomena

Scientific American ◽

10.1038/scientificamerican04211888-10256supp ◽

1888 ◽

Vol 25 (642supp) ◽

pp. 10256-10258

Author(s):

J. W. Moore

Keyword(s):

Optical Projection ◽

Dynamic Phenomena ◽

Lines Of Force

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Chemical Action in a Magnetic Field

Scientific American ◽

10.1038/scientificamerican08131881-4675bsupp ◽

1881 ◽

Vol 12 (293supp) ◽

pp. 4675-4676

Author(s):

Ira Remsen

Keyword(s):

Magnetic Field ◽

Chemical Action

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Evolution of the concepts of magnetic and electric lines of force

Uspekhi Fizicheskih Nauk ◽

10.3367/ufnr.0084.196412g.0715 ◽

1964 ◽

Vol 84 (12) ◽

pp. 715-721 ◽

Cited By ~ 2

Author(s):

Mikhail A. Leontovich

Keyword(s):

Lines Of Force

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Mechanical Properties and Corrosion Resistance of TiAl6V4 Alloy Produced with SLM Technique and Used for Customized Mesh in Bone Augmentations

Applied Sciences ◽

10.3390/app11125622 ◽

2021 ◽

Vol 11 (12) ◽

pp. 5622

Author(s):

Nicola De Angelis ◽

Luca Solimei ◽

Claudio Pasquale ◽

Lorenzo Alvito ◽

Alberto Lagazzo ◽

...

Keyword(s):

Sem Analysis ◽

Bone Augmentation ◽

Specific Test ◽

Chemical Action ◽

Three Point Bending ◽

Custom Made ◽

Manufacturing Techniques ◽

Mechanical Properties And Corrosion ◽

Flexural Tests ◽

Applied Stresses

Bone augmentation procedures represent a real clinical challenge. One option is the use of titanium meshes. Additive manufacturing techniques can provide custom-made devices in titanium alloy. The purpose of this study was to investigate the material used, which can influence the outcomes of the bone augmentation procedure. Specific test samples were obtained from two different manufacturers with two different shapes: surfaces without perforations and with calibrated perforations. Three-point bending tests were run as well as internal friction tests to verify the Young’s modulus. Test samples were placed in two different buffered solutions and analyzed with optical microscopy. A further SEM analysis was done to observe any microstructural modification. Three-point flexural tests were conducted on 12 specimens. Initial bending was observed at lower applied stresses for the perforated samples (503 MPa) compared to non-perforated ones (900 MPa); the ultimate flexural strength was registered at 513 MPa and 1145 MPa for perforated and non-perforated samples, respectively. Both microscopic analyses (optical and SEM) showed no significant alterations. Conclusions: A normal masticatory load cannot modify the device. Chemical action in the case of exposure does not create macroscopic and microscopic alterations of the surface.

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Homo homini tigris: Thomas Hobbes and the global images of sovereignty

Philosophy & Social Criticism ◽

10.1177/01914537211033021 ◽

2021 ◽

pp. 019145372110330

Author(s):

Sandro Chignola

Keyword(s):

Turning Point ◽

Thomas Hobbes ◽

The State ◽

Modern Concept ◽

Logical Framework ◽

Semantic Field ◽

Sovereign Power ◽

Global Space ◽

Lines Of Force

This article addresses the modern concept of sovereignty as a multivocal and conflictual semantic field, arguing for the necessity to trace its genealogy based on the structural tensions that haunt its logical framework – as well as its representations – rather than on a linear historiographic reconstruction. In particular, the scrutiny I propose aims to examine a series of exchanges that have been characterizing this concept since the beginning: the global and the European, the maritime and the territorial, the colony and the state, the imperial and the proprietary. The problematic balance between ‘imperium’ and ‘dominium’ is indeed assumed here as the turning point of the rise of a sovereign power that appears to be originally rooted in the very production and governance of the global space, thus giving up all possible Eurocentric narratives of modernity. To illustrate my argument, I focus on the frontispieces to three of Thomas Hobbes’s most important books, that is, his translation of Thucydides’ Peloponnesian Wars, De Cive and Leviathan. A thorough analysis of these images enables us to understand how these lines of force traverse the very heart of modern European political concepts, along with the mirroring effects that constantly bounce their normative construction of subjectivity back and forth from the periphery to the centre and, ultimately, from the market to the state.

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XIV. On the absorption of gases by solids

Proceedings of the Royal Society of London ◽

10.1098/rspl.1881.0044 ◽

1881 ◽

Vol 32 (212-215) ◽

pp. 407-408

Keyword(s):

Royal Society ◽

Hydraulic Press ◽

Careful Examination ◽

Solid Matter ◽

Chemical Action ◽

High Pressure And Temperature ◽

Solid Iron ◽

Series Of Experiments ◽

The Subject ◽

Very High

During the progress of the investigations which I have from time to time had the honour of bringing under the notice of the Royal Society, I have again and again noticed the apparent disappearance of gases inclosed in vessels of various materials when the disappearance could not be accounted for upon the assumption of ordinary leakage. After a careful examination of the subject I found that the solids absorbed or dissolved the gases, giving rise to a striking example of the fixation of a gas in a solid without chemical action. In carrying out that most troublesome investigation, the crystalline separation of carbon from its compounds, the tubes used for experiment have been in nine cases out of ten found to be empty on opening them, and in most cases a careful testing by hydraulic press showed no leakage. The gases seemed to go through the solid iron, although it was 2 inches thick. A series of experiments with various linings were tried. The tube was electro-plated with copper, silver, and gold, but with no greater success. Siliceous linings were tried fusible enamels and glass—but still the' tubes refused to hold the contents. Out of thirty-four experiments made since my last results were published, only four contained any liquid or condensed gaseous matter after the furnacing. I became convinced that the solid matter at the very high pressure and temperature used must be pervious to gases.

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