Ancient basketry on the inside: X-ray computed microtomography for the non-destructive assessment of small archaeological monocotyledonous fragments: examples from Southeast Europe

AbstractThis study proposes non-destructive assessment instrumentation, the X-ray MicroCT scanning, to evaluate archaeological basketry remains prior to any destructive analysis. Three case studies are originating from two archaeological sites in Southeast Europe, with three different stages of preservation (poor, sufficient and very good). In addition, there are two preservation modes—charring and desiccation—along with two conservation situations: treated and untreated with conservation agent fragments. The three different scenarios were chosen to explore the potential range of X-ray MicroCT scanning technology when applied to monocotyledonous small-sized archaeological remains. It was proved that this non-invasive X-ray method is particularly suitable for the often-disadvantaged ancient basketry remains.

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Ancient Basketry on the Inside: X-ray Computed Tomography for the Non-destructive Assessment of Small Archaeological Monocotyledonous Fragments. Examples from South-east Europe

10.21203/rs.3.rs-703053/v1 ◽

2021 ◽

Author(s):

Mila Andonova

Keyword(s):

Ct Scanning ◽

Archaeological Sites ◽

Potential Range ◽

Ray Method ◽

East Europe ◽

X Ray ◽

Non Invasive ◽

South East Europe ◽

X Ray Computed ◽

Non Destructive

Abstract This study proposes non-destructive assessment instrumentation, being the X-ray CT scanning, for the evaluation of archaeological basketry remains prior to any destructive analysis. There are three case studies, originating from two archaeological sites in South-east Europe, with three different stages of preservation (poor, sufficient and very good). In addition, there are two preservation modes – charring and desiccation – along with two conservation situations: treated and untreated with conservation agent fragments. The three different scenarios were chosen to explore the potential range of CT scanning technology when applied to monocotyledonous small-sized archaeological remains. It was proved that this non-invasive X-ray method is particularly suitable in the case of the often-disadvantaged ancient basketry remains.

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Computed microtomography in the analysis of fiber migration in yarn

Autex Research Journal ◽

10.2478/v10304-012-0020-x ◽

2013 ◽

Vol 13 (1) ◽

pp. 28-32 ◽

Cited By ~ 6

Author(s):

Marta Toda ◽

Katarzyna Ewa Grabowska

Keyword(s):

Cross Sections ◽

Two Dimensional ◽

X Ray ◽

Testing Method ◽

Computed Microtomography ◽

X Ray Computed ◽

Nondestructive Testing Method ◽

2D And 3D ◽

Migration Testing ◽

Non Destructive

Abstract This study is a short analysis of the use of computer microphotography in fiber migration testing as a modern nondestructive testing method. Microtomography operates similarly to X-ray computed tomography systems used in medicine, but with much better resolution owing to the use of a smaller radiation spot. The internal structure is reconstructed as a series of two-dimensional cross-sections that are then used to create 2D and 3D morphological objects. This process is non-destructive and does not require special preparation of a testing material.

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X-ray microcomputed tomography applied to the taxonomic study of rare material: redescriptions of seven of Schirch’s Brazilian species of land planarians (Geoplanidae, Platyhelminthes)

ZooKeys ◽

10.3897/zookeys.910.39486 ◽

2020 ◽

Vol 910 ◽

pp. 1-42 ◽

Cited By ~ 1

Author(s):

Marcos Santos Silva ◽

Fernando Carbayo

Keyword(s):

Taxonomic Revision ◽

Type Specimen ◽

Morphological Data ◽

Type Material ◽

Entire Body ◽

Type Specimens ◽

X Ray ◽

Computed Microtomography ◽

X Ray Computed ◽

Non Destructive

In 2016, the type-material of ten of the 15 Brazilian land planarians (Platyhelminthes, Tricladida, Geoplanidae) described by Schirch (1929) was discovered deposited in the Museu Nacional do Rio de Janeiro (MNRJ). Schirch only described the external morphology of these species, all originally placed in the genus Geoplana. By the 1930s and 1950s Geoplana itatiayana, G. plana, and G. rezendei underwent taxonomic revision based on the study of non-type specimens. The remaining 12 species also underwent a taxonomic revision but only based on the literature. Current names of these species are Geoplana goettei, Pseudogeoplana arpi, Ps. blaseri, Ps. bonita, Ps. bresslaui, Ps. cardosi, Ps. doederleini, Ps. lumbricoides, Ps. obscura, Ps. riedeli, Ps. theresopolitana, and Ps. wetzeli. The species Geoplana maximiliani sensu Schirch (1929) was renamed as Ps. schirchi Ogren & Kawakatsu, 1990. The present study reports a taxonomic revision of seven of Schirch’s species using type material, namely Obama itatiayana, Pasipha plana, Pseudogeoplana arpi, Ps. bresslaui, Ps. doederleini, Ps. schirchi and Ps. wetzeli. Additional specimens of some of these species were also examined. Morphological data from histological preparations and from virtual sections were obtained through a non-destructive technique of X-ray computed microtomography (µCT). This approach resulted in the preservation of the entire body of at least one type-specimen of each species, and the holotype of Ps. bresslaui. Conspecificity of O. itatiayana and P. plana was confirmed, as previously reported in the literature. It is also proposed that Ps. bresslaui belongs to the genus Paraba, while the other species should remain in Pseudogeoplana, since type-specimens are either immature, poorly preserved or simply lost.

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Effectiveness of Non Destructive Physical Analysis Method Using X-ray CT Imaging

ISTFA 2009: Conference Proceedings from the 35th International Symposium for Testing and Failure Analysis ◽

10.31399/asm.cp.istfa2009p0247 ◽

2009 ◽

Author(s):

Akira Mizoguchi ◽

Koichiro Takeuchi

Keyword(s):

Ct Images ◽

Physical Analysis ◽

Nondestructive Analysis ◽

X Ray ◽

Destructive Analysis ◽

X Ray Computed ◽

Analytical Result ◽

Test Use ◽

Non Destructive

Abstract Now we are attempting to apply non destructive analysis from evaluation tests or failure analysis to acceptance tests or production tests. Needless to say non destructive analysis has an advantage of conserving the state of samples and the reducing the time of analysis as compared to conventional methods with destructive physical analysis. Moreover, we are paying attention to the following reasons for nondestructive physical analysis. It is difficult to keep the reproducibility of the analysis because of the high skill level required for destructive physical analysis. On the other hand, high reproducibility can be easily achieved by fixing the condition or parameters of the device during nondestructive analysis when performed by tools like X-ray. Moreover, we expect that neither the analytical result nor the quality of the nondestructive analysis depends upon the worker's capability. In this paper we will discuss the following two items from the viewpoint of quality assurance. 1. The method of the screening for fake parts (1) The procedure flow for the production discontinued parts (2) The comparison and examination between the diagnostic using X-ray computed tomography (X-ray CT) images and various examinations (3) Other observation cases using X-ray CT images 2. Effectiveness and consideration in reliability evaluation test using X-ray CT image (1) Comparison of observation cases with a variety of jointing points in parts (2) Consideration of application of nondestructive observation technique in reliability test Use of X-ray CT images is effective in diagnosing the quality of the product or the process. Moreover, we find that use of X-ray CT images is effective for the improvement of the reproducibility of the evaluation examination. Then we find that use of X-ray CT images can reduce the time of evaluation examination too.

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The use of diagnostic radiology to detect shell irregularities in the New Zealand paua (abalone) Haliotis iris

Laboratory Animals ◽

10.1258/0023677011911552 ◽

2001 ◽

Vol 35 (2) ◽

pp. 167-171 ◽

Cited By ~ 5

Author(s):

John C. Schofield ◽

Roseanne M. Grindley ◽

Jonathan A. Keogh

Keyword(s):

New Zealand ◽

Diagnostic Radiology ◽

Video Display ◽

Ray Method ◽

Marine Gastropods ◽

X Ray ◽

Non Invasive ◽

Display Unit ◽

Non Destructive ◽

Video Display Unit

A method is described for the non-destructive, non-invasive, detection of shell lesions in the New Zealand paua, a marine gastropod Haliotis iris using diagnostic radiology. The X-ray method reliably detected the presence of shell lesions in 96% of the cases examined once lesion dimensions exceeded 6.2 × 7.1 mm. The extent of lesions above this size can be reliably and accurately determined from X-ray images viewed on a video display unit (VDU). Biofouling on the outside of the shell can cause misdiagnoses. This method is a significant animal welfare refinement in the identification of marine gastropods with shell lesions, when compared with traditional techniques which kill the animals.

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