scholarly journals The Bargiolina, a Striking Historical Stone from Monte Bracco (Piedmont, NW Italy) and a Possible Source of Industrial Minerals

2019 ◽  
Vol 11 (16) ◽  
pp. 4293 ◽  
Author(s):  
Alessandro Cavallo ◽  
Giovanna Antonella Dino
Keyword(s):  
Da Vinci ◽  
Mineralogical Composition ◽  
Western Alps ◽  
Leonardo Da Vinci ◽  
Industrial Minerals ◽  
Yield Rate ◽  
The Past ◽  
Ornamental Stones ◽  
Nw Italy ◽  
Novel Applications

The Bargiolina quartzite from Monte Bracco (western Alps, northern Italy) represents one of the most important historical ornamental stones of the Piedmont region. Known and used since the prehistoric age as substituting material for chert, it was celebrated by Leonardo da Vinci, and exploited at least since the XIII century, peaking in the XX century. It was extensively used in the construction of basilicas and noble palaces by famous architects of Piedmontese Baroque, for internal and external stone cladding. There are four main commercial and chromatic varieties, and the main technical feature is the regular schistosity, to obtain very thin natural split slabs. The different varieties have a homogeneous mineralogical composition and microstructure: A fine and homeoblastic grain size, and a granular—lepidoblastic texture, with regularly spaced schistose domains. The main rock-forming minerals are quartz, phengite, small amounts of K-feldspar and traces of plagioclase and chlorite. The yield rate of quarries is about 20%, and the poor exploitation planning of the past led to only partly exploited quarry benches, with a very poor residual yield. The large amount of quartz-rich quarry waste and the presence of kaolin-rich gneisses suggests the potential for novel applications in the field of industrial minerals.

scholarly journals Tradiтionalism in structure of stile paradigms in the artistic thinking of the XXth century

2021 ◽  
Author(s):  
Lyudmila Іvаnоvа
Keyword(s):  
Da Vinci ◽  
Leonardo Da Vinci ◽  
Past Century ◽  
Theoretical Idea ◽  
The Past ◽  
World Outlook ◽  
Xix Century ◽  
First Time ◽  
Second Wave ◽  
Hard Type

The purpose of the article is a realization of tradiтionalism as mеtаdirection of art in XX century that historically comparable with mеtаdirection of styles modern-vanguard, jointly forming artistic paradigm of the past century, then the last becomes firmly established in nеоrеnaissаnce world-outlook according to with "system of Leonardo da Vinci" P. Valéry. The methodology of the study is a historian-cомpаrаtive approach, as this demonstrates works of A.Losev, also culturology foreshortening of musicology analysis, as this is given in "Symphonic etude" and others beside B.Asafiev. The scientific novelty of the work is conditioned, first, that that for the first time in specified foreshortening is presented analysis composition of V.Vlasov, but, secondly, original is a theoretical idea about cultural intrusion in style-typology life length Neo-Gothic that impossible was in classicist of music creative activity to XIX-XX cent. Conclusions. Traditionalism forms mеtаdirection since in base this style unity prescribed expressiveness of romanticism-pоstromanticism and realism XIX century that forms analogies to mеtаstyle forming of the modernism (vеrism at the end XIX - at the beginning initially XX century, "hard" type of the neoclassicism I. Stravinsky and P. Hindemith, others), in which vanguard took place as focus of the symbiosis of the styles-directions expressionism, futurism, primitivism, having formed new unity of the vanguard of the second wave in the manner of nеоexpressionism.

Insights Into The Past: The Use Of Microscopy In The Conservation Of Cultural Materials.

1999 ◽  
Vol 5 (S2) ◽  
pp. 1348-1349
Author(s):  
J. Claire Dean
Keyword(s):  
19Th Century ◽  
Da Vinci ◽  
Leonardo Da Vinci ◽  
The Past ◽  
The Sublime ◽  
Cave Paintings

Probably an example of every type of material ever manipulated and utilized by man through out history will eventually find its way to a conservator for treatment and preservation. The term “art conservator”, commonly used to describe those that work to protect and preserve the physical remains of mankind's invention and creativity, is a misnomer. We are better described as conservators of cultural materials, as our work involves the preservation of a huge range of materials and artifacts, many of which would not qualify as “art” under its most accepted definition. From the sublime (a Leonardo da Vinci cartoon) to the ridiculous (a 19th century saloon singer's dress made entirely from rattlesnake skins), from the ancient (paleolithic cave paintings) to the new (a pair of Nike® Air Jordans), if they are in a collection somewhere, they are candidates for examination by a conservator.Despite the variety of materials and artifacts facing us, professional conservators use common approaches to the care of collections and we share the same arsenal of tools.

scholarly journals Global Prague: Renaissance and Reformation Crossroads

2021 ◽  
pp. 1-4
Author(s):  
Howard Louthan
Keyword(s):  
Fruits And Vegetables ◽  
Da Vinci ◽  
Leonardo Da Vinci ◽  
The Past ◽  
Emory University ◽  
The World ◽  
The City

Reading these articles in our AHY Forum brought back a flood of memories to my last days as a university undergraduate at Emory University when I first encountered Emperor Rudolf II and Renaissance Prague in a course taught by the late James Allen Vann. What captivates us about the past? What prompts naive undergraduates to take that fateful step and pursue a PhD in history? For me, it was simply Rudolf. I was not alone. The quizzical emperor ensconced in his castle high above the city has intrigued the imaginations of many. There is certainly irony in this, for Rudolf as an emperor was no success. He ended his reign an ineffective ruler browbeaten by his own brother to abdicate as king of Bohemia. But if he failed politically, there were lasting triumphs elsewhere. Rudolf's contemporary, the Flemish painter and theoretician Karel van Mander, famously pointed to Prague and the emperor as the “greatest art patron in the world.” And what emperor can boast that his most acclaimed “likeness” was a collage of fruits and vegetables, a portrait executed by a student of Leonardo da Vinci?

scholarly journals Leonardo da Vinci and medicine. A glimpse from the past

2020 ◽  
Vol 22 (12) ◽  
pp. 9-14
Author(s):  
Leonid I. Dvoretsky ◽  
Keyword(s):  
Da Vinci ◽  
Leonardo Da Vinci ◽  
Human Anatomy ◽  
Practical Medicine ◽  
The Past ◽  
Creative Role

The article is devoted to the creative role of Leonardo da Vinci in human anatomy, medicine and pathology. It discusses main discoveries of Leonardo in various fields of medicine from the standpoint of modern scientific and practical medicine. The nature of Leonardo's illness and the possible causes of his death are dis-cussed.

The Business Community To Support The Training Of Prospective Students/Employees

2014 ◽  
Vol 1 (1) ◽  
pp. 187-192
Author(s):  
Dan-Maniu Duşe ◽  
Gabriel-Octavian Negrea
Keyword(s):  
Work Experience ◽  
Da Vinci ◽  
Leonardo Da Vinci ◽  
Business Community ◽  
High School Education ◽  
Prospective Students ◽  
Negative Effects ◽  
The Past ◽  
School Year ◽  
Market Requirements

AbstractIn the past years, theoretical high-school education in Romania has gone through much public criticism regarding both the quality and the effectiveness of the instruction offered to students. An excessive focus on theory for most subjects and the neglect of the practical aspects/applications of the themes studied are known to have had negative effects on students’ motivation and their ability to choose a career and to adapt to the labour market requirements. The authors of this article intend primarily to briefly analyse some of the curricular aspects underlining this problem and to suggest some opportunities to offset this situation – opportunities derived from the business community and within the reach of the theoretical high-schools’ managers. In support of the proposed solutions, the authors are going to examine two types of initiatives implemented at the “Gheorghe Lazăr” National College from Sibiu: “training placement” in EU-funded Leonardo da Vinci projects and a “work-experience” type of initiative leading to a successful programme run every school year in cooperation with firms, institutions, and companies from Sibiu.

Replication of Internal Biological Surfaces

1972 ◽  
Vol 30 ◽  
pp. 308-309
Author(s):  
J. A. Nowell ◽  
J. Pangborn ◽  
W. S. Tyler
Keyword(s):  
Da Vinci ◽  
Leonardo Da Vinci ◽  
Rat Lung ◽  
Tubular Structures ◽  
Cerebral Ventricles ◽  
Internal Surfaces ◽  
Biological Surfaces ◽  
Dog Kidney ◽  
Lung And Kidney ◽  
Scanning Electron

Leonardo da Vinci in the 16th century, used injection replica techniques to study internal surfaces of the cerebral ventricles. Developments in replicating media have made it possible for modern morphologists to examine injection replicas of lung and kidney with the scanning electron microscope (SEM). Deeply concave surfaces and interrelationships to tubular structures are difficult to examine with the SEM. Injection replicas convert concavities to convexities and tubes to rods, overcoming these difficulties.Batson's plastic was injected into the renal artery of a horse kidney. Latex was injected into the pulmonary artery and cementex in the trachea of a cat. Following polymerization the tissues were removed by digestion in concentrated HCl. Slices of dog kidney were aldehyde fixed by immersion. Rat lung was aldehyde fixed by perfusion via the trachea at 30 cm H2O. Pieces of tissue 10 x 10 x 2 mm were critical point dried using CO2. Selected areas of replicas and tissues were coated with silver and gold and examined with the SEM.

Leonardo Da Vinci.—II

1910 ◽  
Vol 69 (1782supp) ◽  
pp. 138-140
Author(s):  
Edward P. Buffet
Keyword(s):  
Da Vinci ◽  
Leonardo Da Vinci
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