scholarly journals Technical and Scientific Imaging for Archaeological purpose – A Brazilian case.

2021 ◽  
Vol 2021 (1) ◽  
pp. 38-42
Author(s):  
Alexandre Oliveira Costa ◽  
Alexandre Cruz Leão ◽  
Luiz Antônio Cruz Souza

This paper is about Technical and Scientific Imaging for caving painting (archeological site in Brazil). High quality imaging with color management has been used, in addition to scientific procedures to generate digital images, capable for recording not visible light (ultraviolet and infrared radiation). In addition, the RTI (Reflectance Transformation Imaging) technique was used. Rock Art is a kind of Cultural Heritage, extremely fragile archaeological remains and susceptible to a series of factors (physical, chemical, anthropic and others) that can cause different impacts for their preservation. The Rock Art can suffer an irreversible damage, which can greatly compromise research and relative studies, then, requiring great scientific and technical procedures for imaging.

Author(s):  
Luzmila Burbano Mera ◽  
Marcos Dávila Cedeño ◽  
Tatiana Martínez Santana ◽  
Ramón E. Cevallos Cedeño

Abstract:  Manabí and Ecuadorian population in general are consumers of tomato paste in different forms, so that producers and industrial product processing always looking to have a high quality  and  good  prices  for  the  benefit  of its  customers.  This research based on the results obtained, it leaves a number of very valuable conclusions for determining the carrot pulp will have a positive impact on the physical, chemical and organoleptic, when combined with the tomato paste features, without diminishing or provide a look that could adversely affect its commercial presentation to the client. The objective of this research was to get the development of a tomato paste mixed with carrot paste, with the purpose of obtaining an improved nutritional properties (fiber and beta-carotene) for the benefit of the consumer. Index Terms:  Pasta, tomato, carrot, consistency, nutritional properties.


Minerals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 237
Author(s):  
Carolina Cardell ◽  
Jose Santiago Pozo-Antonio

The physical–chemical characterization of natural and synthetic historical inorganic and mineral pigments, which may be found embedded in paintings (real or mock-ups), glass, enamel, ceramics, beads, tesserae, etc., as well as their alteration under different decay scenarios, is a demanding line of investigation. This field of research is now both well established and dynamic, as revealed by the numerous publications in high-quality journals of varied scientific disciplines. [...]


2010 ◽  
Vol 46 (3) ◽  
pp. 563-569 ◽  
Author(s):  
Marina Bicalho Silveira ◽  
Marcella Araugio Soares ◽  
Eduardo Sarmento Valente ◽  
Samira Soares Waquil ◽  
Andréa Vidal Ferreira ◽  
...  

18F-Sodium fluoride (Na18F) is a radiopharmaceutical used for diagnosis in nuclear medicine by positron emission tomography (PET) imaging. Bone scintigraphy is normally performed using 99mTc-MDP. However, 18F PET scans promise high quality imaging with increased resolution and improved sensitivity and specificity. In order to make available a tool for more specific studies of tumors and non-oncological diseases of bone tissue, the UPPR/CDTN team undertook the production and quality control of Na18F injectable solution with the physical-chemical, microbiological and biological characteristics recommended in the U.S. Pharmacopeia. Na18F radiochemical purity was 96.7 ± 1.3 %, with Rf= 0.026 ± 0.006. The product presented a pH of 5.3 ± 0.6, half life of 109.0 ± 0.8 minutes, endotoxin limit < 5.0 EU.mL-1 and no microbial contaminants. The biodistribution of Na18F was similar to that described in the literature, with a clearance of 0.19 mL.min-1 and distribution volume of 18.76 mL. The highest bone concentration (5.0 ± 0.5 %ID.g-1) was observed 20 minutes after injection. Na18F produced at the UPPR presented all the quality assurance requirements of the U.S. Pharmacopeia and can be safely used for clinical bone imaging.


Author(s):  
José Ignacio Royo Guillén ◽  
Francisco José Navarro Cabeza ◽  
Serafín Benedí Monge

Los estudios sobre grabados rupestres al aire libre de cronología postpaleolítica, adolecen de importantes carencias que, en el valle medio del Ebro, se han visto superadas con la llegada del tercer milenio. Con la presentación de este trabajo se pretende dar a conocer un nuevo núcleo de grabados rupestres, localizado en el extremo suroeste de la provincia de Zaragoza, en las gargantas calcáreas del río Mesa. Entre los nuevos enclaves rupestres, destacan los abrigos con grabados protohistóricos, pero muy especialmente los de cronología medieval andalusí y los de iconografía cristiana entre los siglos XIV y XVIII, con perduraciones hasta mediados del siglo XIX y algunas escenas relacionadas con la primera Guerra Carlista en Aragón. La distribución de los hallazgos, su tipología e iconografía y los restos arqueológicos asociados, permiten documentar una importante ocupación del territorio desde la Iª Edad del Hierro y la sacralización del paisaje a través del arte rupestre, con pervivencias que se perpetúan a lo largo de la Edad Media y Moderna, destacando como novedad la presencia de un importante conjunto de inscripciones epigráficas islámicas que deben situarse entre los siglos XI y XII. AbstractThe studies on open-air rock engravings in post-Paleolithic chronology suffer from important deficiencies, which in the middle valley of the Ebro, have been overcome with the arrival of the third millennium.With the presentation of this work, the aim is to make known a new nucleus of rock engravings, located in the extreme southwest of the province of Zaragoza, in the limestone gorges of the River Mesa. Among the new rock engravings, the shelters with protohistoric engravings stand out, but especially those with a medieval Andalusian chronology and those with Christian iconography between the 14th and 18th centuries, which lasted until the middle of the 19th century and some scenes related to the first Carlist War in Aragon. The distribution of the findings, their typology and iconography and the associated archaeological remains, allow us to document an important occupation of the territory since the First Iron Age and the sacralization of the landscape through rock art, with survivals that are perpetuated throughout the Middle and Modern Ages, highlighting as a novelty the presence of an important set of Islamic epigraphic inscriptions that must be located between the 11th and 12th centuries.


2016 ◽  
Vol 71 (5) ◽  
pp. 988-995 ◽  
Author(s):  
Patrick D. Barnett ◽  
S. Michael Angel

A spatial heterodyne Raman spectrometer (SHRS) with millimeter-sized optics has been coupled with a standard cell phone camera as a detector for Raman measurements. The SHRS is a dispersive-based interferometer with no moving parts and the design is amenable to miniaturization while maintaining high resolution and large spectral range. In this paper, a SHRS with 2.5 mm diffraction gratings has been developed with 17.5 cm−1 theoretical spectral resolution. The footprint of the SHRS is orders of magnitude smaller than the footprint of charge-coupled device (CCD) detectors typically employed in Raman spectrometers, thus smaller detectors are being explored to shrink the entire spectrometer package. This paper describes the performance of a SHRS with 2.5 mm wide diffraction gratings and a cell phone camera detector, using only the cell phone’s built-in optics to couple the output of the SHRS to the sensor. Raman spectra of a variety of samples measured with the cell phone are compared to measurements made using the same miniature SHRS with high-quality imaging optics and a high-quality, scientific-grade, thermoelectrically cooled CCD.


2001 ◽  
Vol 205 ◽  
pp. 430-431
Author(s):  
Sergey Likhachev

This presentation focuses on the problems associated with obtaining high quality images from a high orbiting space VLBI (SVLBI) mission. SVLBI intensifies and magnifies all imaging problems, making these problems clearer to understand, though much harder to solve.


2017 ◽  
Vol 897 ◽  
pp. 375-378 ◽  
Author(s):  
Satoshi Torimi ◽  
Koji Ashida ◽  
Norihito Yabuki ◽  
Masato Shinohara ◽  
Takuya Sakaguchi ◽  
...  

As a new thinning and surface planarizing process of Silicon Carbide (SiC) wafer, we propose the completely thermal-chemical etching process; Si-vapor etching (Si-VE) technology. In this work, the effects of mechanical strength and surface step-terrace structure by Si-VE are investigated on the 4° off-axis 4H-SiC (0001) Si-face substrates. The indentation hardness of Si-VE surface is superior to the conventional chemo-mechanical polishing (CMP) surface even after epitaxial growth. The transverse strength of thinned Si-VE substrate is also superior to the conventional mechanically ground substrate. The surface step-terrace structures are observed by the low energy electron channeling contrast (LE-ECC) imaging technique. The latent scratch causes bunched step lines (BSLs) with various inhomogeneous step morphologies only on the CMP surface.


2018 ◽  
Vol 35 (3) ◽  
pp. 135-142
Author(s):  
Adam Honeybrook ◽  
Jason D. Bloom ◽  
Charles Woodard ◽  
Eric F. Bernstein

High-resolution 3-dimensional photography offers unparalleled advantages in objective and detailed skin contour characterization, quantification, volumetric and surface area analysis. This study aims to illustrate the benefits of 3-dimensional photography through analysis of noninvasive reduction of submental fat using cryolipolysis. A nonrandomized prospective analysis was performed of 14 selected patients who underwent treatment with cryolipolysis (CoolSculpting System; Zeltiq) between February and June 2016. The benefits of 3-dimensional photography (Vectra; Canfield Scientific) are presented. High-quality 3-dimensional images are presented to illustrate the utility of 3-dimensional photography as a means to quantitatively evaluate changes in submental volume, fat thickness, and surface area reduction, thereby exemplifying the broad applicability of this imaging technique. Three-dimensional photography technology provides clinicians with enhanced options that extend beyond simple 2-dimensional photography. Our study illustrates the benefits of the technology for accurately measuring volumetric changes after submental cryolipolysis treatment.


1997 ◽  
Author(s):  
Makoto M. Miyahara ◽  
Shouji Ohtsuka ◽  
Shuji Taniho ◽  
V. Ralph Algazi

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