scholarly journals NUOVE ESCHE PER PESCARE NEL MARE MAGNUM DELL’EREDITÀ CULTURALE

2021 ◽  
Author(s):  
Pier Giorgio Righetti ◽  
Gleb Zilberstein
Keyword(s):  
Ethylene Vinyl Acetate ◽  
Surface Material ◽  
Standard Means ◽  
X Ray ◽  
The Past ◽  
Plastic Foil ◽  
The World ◽  
Past Life ◽  
World Cultural Heritage ◽  
Past Data

We describe here a novel tool for exploring documents pertaining to the world Cultural Heritage while avoiding their contamination or damage. Known under the acronym EVA, it consists of a plastic foil of Ethylene Vinyl Acetate studded with strong cation and anion resins admixed with C8 and C18 hydrophobic beads. When applied to any surface such foils can harvest any type of surface material, which is then eluted and analysed via standard means, such as GS/MS (typically for metabolites), MS/MS (for peptide and protein analysis), X-ray (for elemental analysis). We briefly review here a number of past data, such as screening of original documents by Bulgakov, Chekov, Casanova, Kepler, while dealing in extenso with very recent data, pertaining to Orwell and Stalin and analysis of the skin of an Egyptian mummy. The technique was also successfully applied to paintings, such as the Donna Nuda at the Hermitage in St. Petersburg, attributed to Leonardo and his school. This novel methodology represents a formidable tool for exploring the past life of famous authors, scientist and literates in that it can detect traces of their pathologies and even drug consumption left by saliva and sweat traces on their original hand-written documents.

scholarly journals Manufacture of x-ray apparatus in Serbia

2021 ◽  
Vol 50 (4) ◽  
pp. 77-84
Author(s):  
Miroslav Mišić ◽  
Sava Stajić ◽  
Marko Petrović ◽  
Vladimir Petrović
Keyword(s):  
Health System ◽  
Diagnostic Methods ◽  
Software Systems ◽  
Short Time Period ◽  
Private Company ◽  
X Ray ◽  
The Past ◽  
Time Period ◽  
The World ◽  
Short Time

X-ray diagnostics has an irreplaceable place in radiology despite other modern diagnostic methods. That is why the production of modern X-ray machines is strategically important for every health system. Serbia has a tradition of over 70 years in the production of X-ray machines. From the first device manufactured in Serbia in 1953, it kept pace with the world in technical and technological terms. X-ray machines were produced by the state company Jugorendgen from Nis. Unfortunately, the company Jugorendgen stopped production before it managed to make a digital X-ray machine. For the past 17 years, these devices have been manufactured by Visaris. Visaris is a private company from Belgrade, which has been developing and manufacturing digital X-ray machines and software systems since 2003. Its importance came to the forefront during the pandemic SARS-CoV-2 infection when the health system of Serbia needed more stationary and mobile X-ray machines in a short time period.

X-RAY TREATMENT OF TONSILS AND ADENOIDS IN CHILDREN, VIEWED AS ABSOLUTELY HARMLESS IN 1921

PEDIATRICS ◽  
1978 ◽  
Vol 62 (4) ◽  
pp. 553-553
Author(s):  
T. E. C.
Keyword(s):  
Medical Literature ◽  
Operative Procedure ◽  
Ray Method ◽  
Partial Removal ◽  
Extensive Area ◽  
X Ray ◽  
The Past ◽  
Focal Infection ◽  
The World ◽  
The Absolute

Medical literature when read with the advantage of hindsight is filled with many false statements, as is evident from these which were abstracted from a pediatric paper published in 1921. The development of x-ray therapy of tonsils and adenoids and the absolute safety of this method as compared with the incomplete and partial removal of tonsils and adenoids, not to mention the possible dangers and complications attending operative procedure, indicate a marked advance in the therapy of rheumatism, endocarditis, pericarditis, and all those conditions resulting from the focal infection of the throat. . . . That the x-ray method of treating tonsils and adenoids is not only safe but absolutely harmless has been definitely proven by the large number of cases of tubercular glands of the neck that have been treated by x-ray in the past 10 years throughout the world. These cases require vastly more treatment and a much more extensive area of exposure than the x-ray treatment of tonsils. . . . The possibility of an x-ray burn is even more remote than injury to the adjacent glands provided the technique is properly carried out. This is largely due to the perfection and constancy of the present day interrupterless machine and Coolidge tube.

scholarly journals The XFEL Protein Crystallography: Developments and Perspectives

2019 ◽  
Vol 20 (14) ◽  
pp. 3421 ◽  
Author(s):  
Haiguang Liu ◽  
Weontae Lee
Keyword(s):  
Free Electron ◽  
Protein Crystallography ◽  
Free Electron Lasers ◽  
X Ray ◽  
The Past ◽  
The World

In the past 10 years, the world has witnessed the revolutionary development of X-ray free electron lasers (XFELs) and their applications in many scientific disciplinaries [...]

Discussion the Influence of Nonmetal Doped TiO2

2011 ◽  
Vol 287-290 ◽  
pp. 1771-1774 ◽  
Author(s):  
Song Han ◽  
Si Yao Guo ◽  
Wei Xiang ◽  
Hui Wang ◽  
Lin Yang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Photoelectron Spectroscopy ◽  
Molar Ratio ◽  
Xenon Lamp ◽  
X Ray Diffraction ◽  
X Ray ◽  
The Past ◽  
The World ◽  
Intense Research ◽  
Scanning Electron

With the development of the science and technology, environmental pollution becomes one of the most serious problems all over the world. TiO2 has gained intense research in the past decades due to its applications in environmental purification and solar energy conversion. In this paper, we discuss the influence of nonmetal (N, P, S) doped TiO2 were prepared by hydrothermal method, the samples are characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The photocatalytic activity of them was evaluated for the degradation of methylene blue under xenon lamp which has similar spectra to solar light. The results domenstrated that the N, P-codoped TiO2 powders exhibited a better photocatalytic activity, and the optimum molar ratio is also investigated.

scholarly journals Heritage Tourism in Japan and Nepal : A Study of Shikoku and Lumbini

2019 ◽  
Vol 10 (1) ◽  
pp. 8-36
Author(s):  
Him Lal Ghimire
Keyword(s):  
Large Scale ◽  
Japanese Culture ◽  
Cultural Resources ◽  
Collective Memories ◽  
Heritage Sites ◽  
The Past ◽  
Heritage Site ◽  
The World ◽  
World Cultural Heritage ◽  
Economic Vitality

Tourism, the world’s largest industry, is essential to a community’s economic vitality, sustainability and profitability. The word ‘heritage’ in its broader meaning is frequently associated with the word ‘inheritance’, that is, something transferred from one generation to another. Heritage might look old-after all, the language of heritage focuses on preservation, revitalization, and restoration-but closer inspection usually reveals contemporary concerns. Heritage is the symbolic embodiment of the past, reconstructed and reinterpreted in the collective memories and traditions of contemporary societies rather than being perceived as a mere apotheosis of bygone times. It is concerned with exploring both tangible and intangible remnants of the past. Important criterion for a designation as a World Cultural Heritage site is the ‘‘authenticity’’ and ‘‘sincerity’’ of a candidate site. The heritage sites are the most susceptible and vulnerable sectors. A large number of significant heritage sites around the world are fragile properties, and they are faced with different challenges. Both Japan and Nepal is home to a variety of frequently occurring disasters, which can cause wide-ranging damage to its cultural resources. Japan and Nepal’s remarkable heritage is not only part of what makes both the countries a popular travel destination, but also something that needs to be properly protected, maintained and preserved, so that future generations can enjoy it as much as we do today. It has been interesting lesson to rest of the world that how Japan has been mitigating and surviving with large scale disasters. The Japanese culture, tradition and technology must have been playing significant role for this. The learning from Japan could be instrumental to manage, rebuild and develop heritage sites and tourism in Nepal. This article is the partial outcome of my Postdoctoral research in Japan.

scholarly journals Predictive 3D Modelling and Virtual Reality of the World Cultural Heritage of Ruins of the Buddhist Vihara at Paharpur, Bangladesh

2021 ◽  
Author(s):  
Md. Masood Imran ◽  
Miner Masud
Keyword(s):  
Virtual Reality ◽  
Cultural Heritage ◽  
Predictive Modelling ◽  
3D Models ◽  
3D Modelling ◽  
New Paradigm ◽  
Archaeological Data ◽  
The Past ◽  
The World ◽  
World Cultural Heritage

Generating predictive 3D modelling and virtual reality (VR) of the World Cultural Heritage of ruins of the Buddhist vihara at Paharpur, Bangladesh, is the ultimate notion of this research paper. In Bangladesh archaeology, it is a new paradigm to generate the predictive 3D models of the ruined structures in real mood and develop a VR to organise a journey from ruins mood to near to real mood. It will help to forecast the past virtually through the journey of present towards past. Futuristic forecasting is the normalised phenomenon in statistical analysis, despite the archaeologist’s motto, which is to predict the past. Methodologically, philosophising the vihara architecture of the Bangla region by following Vajrayana Buddhism is the first step. Then, information technology and archaeological data enable the 3D model generation of a known structure, producing high-quality outputs of the historic site for digital conservation. Finally, 3D predictive modelling has been achieved by supporting the integrated and interactive consideration of data, established 3D modelling and VR generating tools, and the guidance of the London Charter of 2006 and the Seville Principle of 2011 for the regenerating of the cultural heritage of ruins of the Buddhist vihara at Paharpur, Bangladesh.

Personal Observations on Trends in XRF

1986 ◽  
Vol 30 ◽  
pp. 35-37
Author(s):  
John V. Gilfrich
Keyword(s):  
Research Laboratory ◽  
State Of The Art ◽  
Far East ◽  
Fluorescence Analysis ◽  
Naval Research ◽  
X Ray ◽  
The Past ◽  
The Far East ◽  
The World ◽  
Mature Field

Over the past many years, x-ray fluorescence analysis (XRF) has developed into a very mature field. The Plenary Session at this, the 35th Annual Denver Conference on Applications of X-Ray Analysis, deals with an evaluation of developments around the world, as viewed by experts from the three major areas, North America, Europe and the Far East. In this brief report, I would like to convey that which I consider to be the state-of-the-art at the present time, and make some prognostications, which may or may not be dignified as predictions. Many of the specifics that I mention will refer to work in which we, at the Naval Research Laboratory, have been involved. To be fair, I will also deal with some areas in which others have worked. In my mind, the field divides itself naturally into four areas: Sources, Dispersion Devices, Detectors and Data Reduction, I would like to deal with each of these in turn.

Early childhood corner: The Power of Representation: Graphs and Glyphs in Data Analysis Lessons for Young Learners

2009 ◽  
Vol 15 (6) ◽  
pp. 324-326
Author(s):  
William O. Lacefield
Keyword(s):  
Early Childhood ◽  
Data Analysis ◽  
Mathematics Curriculum ◽  
Early Childhood Mathematics ◽  
Young Learners ◽  
The Past ◽  
The World ◽  
Past Data ◽  
Concrete Materials

Skillful teachers capitalize on youngsters' proclivity for exploration by implementing lessons that allow for collecting, organizing, analyzing, and discussing data—including constructing graphs and glyphs (picture graphs) with concrete materials. Such opportunities can strengthen children's abilities to develop inferences, make predictions, and recognize patterns. In the past, data analysis was often neglected in early childhood mathematics curriculum. However, educators now recognize that children's natural inquisitiveness about their experiences and about the world in which they live can stimulate them to raise a variety of questions that lead to data analysis: What kind? How much? Which of these? How many?

The Use of Advanced Analytical Techniques for Characterization of the Chemical, Physical, and Crystallographic Nature of a Surface

1973 ◽  
Vol 31 ◽  
pp. 132-133 ◽  
Author(s):  
R. E. Herfert
Keyword(s):  
Surface Characterization ◽  
Analytical Techniques ◽  
X Ray Diffraction ◽  
Depth Of Penetration ◽  
X Ray ◽  
The Past ◽  
Transmission Electron ◽  
Scanning Electron

Studies of the nature of a surface, either metallic or nonmetallic, in the past, have been limited to the instrumentation available for these measurements. In the past, optical microscopy, replica transmission electron microscopy, electron or X-ray diffraction and optical or X-ray spectroscopy have provided the means of surface characterization. Actually, some of these techniques are not purely surface; the depth of penetration may be a few thousands of an inch. Within the last five years, instrumentation has been made available which now makes it practical for use to study the outer few 100A of layers and characterize it completely from a chemical, physical, and crystallographic standpoint. The scanning electron microscope (SEM) provides a means of viewing the surface of a material in situ to magnifications as high as 250,000X.

RNA polymerase: Preparation and structural analysis of helical polymers

1984 ◽  
Vol 42 ◽  
pp. 152-153
Author(s):  
E. Loren Buhle ◽  
Pamela Rew ◽  
Ueli Aebi
Keyword(s):  
Structural Analysis ◽  
Rna Polymerase ◽  
Molecular Level ◽  
X Ray Diffraction ◽  
Helical Polymers ◽  
X Ray ◽  
E Coli ◽  
The Past ◽  
Ordered Arrays ◽  
Low Ionic Strength

While DNA-dependent RNA polymerase represents one of the key enzymes involved in transcription and ultimately in gene expression in procaryotic and eucaryotic cells, little progress has been made towards elucidation of its 3-D structure at the molecular level over the past few years. This is mainly because to date no 3-D crystals suitable for X-ray diffraction analysis have been obtained with this rather large (MW ~500 kd) multi-subunit (α2ββ'ζ). As an alternative, we have been trying to form ordered arrays of RNA polymerase from E. coli suitable for structural analysis in the electron microscope combined with image processing. Here we report about helical polymers induced from holoenzyme (α2ββ'ζ) at low ionic strength with 5-7 mM MnCl2 (see Fig. 1a). The presence of the ζ-subunit (MW 86 kd) is required to form these polymers, since the core enzyme (α2ββ') does fail to assemble into such structures under these conditions.

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