The Tholos Tomb in Iberia

Antiquity ◽  
1953 ◽  
Vol 27 (107) ◽  
pp. 137-143 ◽  
Author(s):  
Stuart Piggott
Keyword(s):  
Visual Form ◽  
First Time

At the end of the last war it became known to archaeologists in this country that there had been published in Germany in 1943 the first part, itself in two massivevolumes, of a monumental survey of the Spanish chambered tombs by Dr and Frau Leisner. Die Megalithgraber der Iberischen Halbinsel-I Der Suden was sponsored and produced by the Romisch-Germanische Kommission, and for the first time the results of the excavations of Siret, Bonsor and others were presented to scholars in a manner which set a new standard in the publication of such material. The work is noteworthy not only for its detailed and informed discussion of the tombs and their contents, but for its scheme of total presentation of the evidence in visual form and to uniform conventions of scale and draughtsmanship, supported by photographs where necessary.

Are Some Things Unrepresentable?

2011 ◽  
Vol 28 (7-8) ◽  
pp. 85-102 ◽  
Author(s):  
Alexander Galloway
Keyword(s):  
Present Article ◽  
Political Violence ◽  
Data Visualization ◽  
Information Society ◽  
Information Network ◽  
Visual Form ◽  
Jacques Ranciere ◽  
First Time ◽  
Information Aesthetics ◽  
The Way

Jacques Rancière, in his essay ‘Are Some Things Unrepresentable?’, puts forth a challenge that is ever more pertinent to our times. What constitutes the unrepresentable today? Rancière frames his answer in a very specific way: the question of unrepresentability leads directly to the way in which political violence may or may not be put into an image. Offering an alternative to Rancière’s approach, the present article turns instead to the information society, asking if and how something might be unrepresentable in a world saturated by data and information. Thus one approaches the issue of transparency and secrecy here from the perspective of the relative perspicuity (or opacity) of data visualization. Two theses structure the argument, first that ‘data have no necessary visual form’ and, second, that ‘only one visualization has ever been made of an information network’. The tension between these two theses leads to a disconcerting conclusion, that the triumph of information aesthetics precipitates a decline in informatic perspicuity. One is obligated therefore to call for a strong reinvigoration of poetics and hermeneutics within the digital universe, so that representation as such can take place, perhaps for the first time.

Unity of Verbal and Nonverbal Composition in Creolized Mediatex

2018 ◽  
Vol 7 (3) ◽  
pp. 39-44
Author(s):  
Т. Ленкова ◽  
T. Lenkova
Keyword(s):  
Visual Form ◽  
Linguistic Form ◽  
Thematic Unity ◽  
Media Texts ◽  
First Time ◽  
Linguistic Phenomenon

The article is devoted to the analysis of the compositional form in the creolized media text on the material of the modern supra-regional press of Germany. The paper deals with the connection between the verbal and nonverbal parts of the creolized media text at the composition level. Along with the traditional composition-linguistic form (CLF), it is proposed to allocate for the first time a composition-visual form (CVF), which is characteristic for creolized media texts as an informational-thematic unity of verbal and visual. In the proposed study, not only the new concept of composition-visual form is proposed, but also the distinction between the concepts of composition-linguistic visual form and composition-speech visual form based on the language-speech dichotomy.The linguistic phenomenon of the “composition-linguistic form” and the notion of “composition-visual form”, which is characteristic of medialinguistics as an interdisciplinary sphere of knowledge, should be viewed as a single whole, mutually encouraging each other, and influencing the perception of the contents of the creolized media text.

scholarly journals A iconografia de Petosíris no túmulo de Tuna el-Guebel

2020 ◽  
pp. 313-329
Author(s):  
José das Candeias Sales ◽  
Keyword(s):  
High Priest ◽  
Visual Form ◽  
First Time

From an artistic and architectonic perspective, the luxurious tomb of Petosiris, at Tuna el-Gebel is one of the most interesting monuments from the beginning of the Ptolemaic period. The tomb was built and decorated by the high priest of Thoth at the end of his life, in Hermopolis, probably circa 300 BC, and it expresses the characteristic cultural-artistic juxtaposition, a feature of Hellenism. For the first time, we see emerging in an Egyptian monument (in this case, a tomb) a decorative grammar with other style and technique influences, different from everything that had been seen before in Egyptian art. The bas-reliefs in the facade, in the pronaos and in the naos of the tomb, present the biography of Petosiris, or his auto-presentation in visual form, expressed in dual style. In a deliberated convergence and conciliation of traditions, we see an iconographic treatment that borrows both from the pharaonic and the Greek style. In this text, we will address the various iconographic representations of Petosiris in his tomb, at Tuna el-Gebel, aiming to understand its typology, functions and distribution among the three rooms of the building

scholarly journals The substructure of phonics: The visual form of letters and their paradigmatic English pronunciation are systematically related

2018 ◽  
Author(s):  
Hana Jee ◽  
Monica Tamariz ◽  
Richard Shillcock
Keyword(s):  
Hausdorff Distance ◽  
Edit Distance ◽  
Alphabetic Principle ◽  
Learning To Read ◽  
Visual Form ◽  
Visual Distance ◽  
English Pronunciation ◽  
Roman Alphabet ◽  
First Time

We demonstrate, for the first time, significant systematicity between the visual form of lettersof the Roman alphabet and their paradigmatic English pronunciation. We measure the visual distance between letters as Hausdorff distance and the phonological distance between their pronunciations as feature-edit distance. These two sets of distances are significantly positively correlated: letters that look the same tend to be pronounced the same. We discuss the implications for the teaching of the alphabetic principle in learning to read.

Annulate lamellae in the Sertoli cells of guinea pig testis after unilateral torsion of the spermatic cord

1984 ◽  
Vol 42 ◽  
pp. 196-197
Author(s):  
J. Chakraborty ◽  
A. P. Sinha Hikim ◽  
J. S. Jhunjhunwala
Keyword(s):  
Sertoli Cells ◽  
Guinea Pigs ◽  
Spermatic Cord ◽  
Present Report ◽  
Cell Types ◽  
Annulate Lamellae ◽  
Spermatogenic Cells ◽  
Electron Microscopic ◽  
Structural Details ◽  
First Time

Although the presence of annulate lamellae was noted in many cell types, including the rat spermatogenic cells, this structure was never reported in the Sertoli cells of any rodent species. The present report is based on a part of our project on the effect of torsion of the spermatic cord to the contralateral testis. This paper describes for the first time, the fine structural details of the annulate lamellae in the Sertoli cells of damaged testis from guinea pigs.One side of the spermatic cord of each of six Hartly strain adult guinea pigs was surgically twisted (540°) under pentobarbital anesthesia (1). Four months after induction of torsion, animals were sacrificed, testes were excised and processed for the light and electron microscopic investigations. In the damaged testis, the majority of seminiferous tubule contained a layer of Sertoli cells with occasional spermatogonia (Fig. 1). Nuclei of these Sertoli cells were highly pleomorphic and contained small chromatinic clumps adjacent to the inner aspect of the nuclear envelope (Fig. 2).

Electron spectroscopic imaging and diffraction

1991 ◽  
Vol 49 ◽  
pp. 706-707
Author(s):  
M. Rühle ◽  
J. Mayer ◽  
J.C.H. Spence ◽  
J. Bihr ◽  
W. Probst ◽  
...  
Keyword(s):  
Materials Science ◽  
Electron Spectroscopic Imaging ◽  
Magnetic Filter ◽  
Magnetic Imaging ◽  
Illumination System ◽  
Probe Size ◽  
Diffraction Patterns ◽  
Fritz Haber ◽  
Koehler Illumination ◽  
First Time

A new Zeiss TEM with an imaging Omega filter is a fully digitized, side-entry, 120 kV TEM/STEM instrument for materials science. The machine possesses an Omega magnetic imaging energy filter (see Fig. 1) placed between the third and fourth projector lens. Lanio designed the filter and a prototype was built at the Fritz-Haber-Institut in Berlin, Germany. The imaging magnetic filter allows energy-filtered images or diffraction patterns to be recorded without scanning using efficient area detection. The energy dispersion at the exit slit (Fig. 1) results in ∼ 1.5 μm/eV which allows imaging with energy windows of ≤ 10 eV. The smallest probe size of the microscope is 1.6 nm and the Koehler illumination system is used for the first time in a TEM. Serial recording of EELS spectra with a resolution < 1 eV is possible. The digital control allows X,Y,Z coordinates and tilt settings to be stored and later recalled.

A Novel TEM Technique for Characterizing As-Grown CVD Diamond Films

1991 ◽  
Vol 49 ◽  
pp. 956-957 ◽  
Author(s):  
Z.L. Wang ◽  
J. Bentley ◽  
R.E. Clausing ◽  
L. Heatherly ◽  
L.L. Horton
Keyword(s):  
Diamond Films ◽  
Chemical Vapor ◽  
Growth Direction ◽  
Dark Field ◽  
Growth Surface ◽  
Specimen Preparation ◽  
Transmission Electron ◽  
Diffraction Patterns ◽  
First Time ◽  
Microstructural Studies

Microstructural studies by transmission electron microscopy (TEM) of diamond films grown by chemical vapor deposition (CVD) usually involve tedious specimen preparation. This process has been avoided with a technique that is described in this paper. For the first time, thick as-grown diamond films have been examined directly in a conventional TEM without thinning. With this technique, the important microstructures near the growth surface have been characterized. An as-grown diamond film was fractured on a plane containing the growth direction. It took about 5 min to prepare a sample. For TEM examination, the film was tilted about 30-45° (see Fig. 1). Microstructures of the diamond grains on the top edge of the growth face can be characterized directly by transmitted electron bright-field (BF) and dark-field (DF) images and diffraction patterns.

A microscopic marker experiment study on high temperature oxidation of Ni-Al alloy

1986 ◽  
Vol 44 ◽  
pp. 514-515
Author(s):  
Shou-kong Fan
Keyword(s):  
Transport Mechanism ◽  
High Temperature Oxidation ◽  
Transverse Section ◽  
Al Alloy ◽  
Metal Interface ◽  
Electron Microscopic ◽  
Temperature Oxidation ◽  
Analytical Electron ◽  
Microscopic Studies ◽  
First Time

Transmission and analytical electron microscopic studies of scale microstructures and microscopic marker experiments have been carried out in order to determine the transport mechanism in the oxidation of Ni-Al alloy. According to the classical theory, the oxidation of nickel takes place by transport of Ni cations across the scale forming new oxide at the scale/gas interface. Any markers deposited on the Ni surface are expected to remain at the scale/metal interface after oxidation. This investigation using TEM transverse section techniques and deposited microscopic markers shows a different result,which indicates that a considerable amount of oxygen was transported inward. This is the first time that such fine-scale markers have been coupled with high resolution characterization instruments such as TEM/STEM to provide detailed information about evolution of oxide scale microstructure.

Direct imaging of charge transfer

1996 ◽  
Vol 54 ◽  
pp. 680-681
Author(s):  
Yimei Zhu ◽  
J. Tafto
Keyword(s):  
Charge Transfer ◽  
Electron Diffraction ◽  
Scattering Amplitude ◽  
High Temperature Superconductors ◽  
Charge Carriers ◽  
Image Charge ◽  
Net Charge ◽  
Long Time ◽  
Electron Holes ◽  
First Time

The electron holes confined to the CuO2-plane are the charge carriers in high-temperature superconductors, and thus, the distribution of charge plays a key role in determining their superconducting properties. While it has been known for a long time that in principle, electron diffraction at low angles is very sensitive to charge transfer, we, for the first time, show that under a proper TEM imaging condition, it is possible to directly image charge in crystals with a large unit cell. We apply this new way of studying charge distribution to the technologically important Bi2Sr2Ca1Cu2O8+δ superconductors.Charged particles interact with the electrostatic potential, and thus, for small scattering angles, the incident particle sees a nuclei that is screened by the electron cloud. Hence, the scattering amplitude mainly is determined by the net charge of the ion. Comparing with the high Z neutral Bi atom, we note that the scattering amplitude of the hole or an electron is larger at small scattering angles. This is in stark contrast to the displacements which contribute negligibly to the electron diffraction pattern at small angles because of the short g-vectors.

Recent developments in low-voltage SEM of polymers

1993 ◽  
Vol 51 ◽  
pp. 866-867
Author(s):  
S.J. Krause ◽  
W.W. Adams
Keyword(s):  
Low Voltage ◽  
Chromatic Aberration ◽  
Thermal Electron ◽  
Analytical Technique ◽  
Recent Developments ◽  
Beam Currents ◽  
New Generation ◽  
First Time ◽  
Voltage Scanning ◽  
Beam Damage

Over the past decade low voltage scanning electron microscopy (LVSEM) of polymers has evolved from an interesting curiosity to a powerful analytical technique. This development has been driven by improved instrumentation and in particular, reliable field emission gun (FEG) SEMs. The usefulness of LVSEM has also grown because of an improved theoretical and experimental understanding of sample-beam interactions and by advances in sample preparation and operating techniques. This paper will review progress in polymer LVSEM and present recent results and developments in the field.In the early 1980s a new generation of SEMs produced beam currents that were sufficient to allow imaging at low voltages from 5keV to 0.5 keV. Thus, for the first time, it became possible to routinely image uncoated polymers at voltages below their negative charging threshold, the "second crossover", E2 (Fig. 1). LVSEM also improved contrast and reduced beam damage in sputter metal coated polymers. Unfortunately, resolution was limited to a few tenths of a micron due to the low brightness and chromatic aberration of thermal electron emission sources.

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