Fabric Description of Archaeological Ceramics

Author(s):  
Ian Whitbread

Fabric description is fundamental to the characterization, technological analysis and provenance determination of archaeological ceramics. It encompasses description of the arrangement, size, shape, frequency and composition of ceramic material constituents. These properties are used to identify the raw materials, their processing, vessel construction methods, and firing conditions. The process of description should, so far as possible, be an objective record of observed fabric properties that is independent of interpretations concerning technology and provenance. Fabric descriptions are made of ceramics in hand specimen and of samples prepared as thin sections for examination under a polarizing microscope. Rapid evaluation of fabric properties in the field is achieved by studying hand specimens using a magnifying glass or stereomicroscope. Laboratory-based analysis of thin sections provides more accurate and comprehensive identification of fabric properties, especially mineral and rock fragments in coarse fabrics, in terms of qualitative and quantitative data.

Author(s):  
Ian Wilkinson ◽  
Patrick Quinn ◽  
Mark Williams ◽  
Jeremy Taylor ◽  
Ian Whitbread

Microfossils found in archaeological ceramics include representatives of kingdoms Fungi, Protista, Plantae, and Animalia and are composed of calcite, silica, or resistant organic compounds capable of withstanding firing. Methods by which microfossils are isolated for study vary considerably, but the best results involve the disaggregation of potsherds into their individual grains or by cutting petrological thin sections. Microfossils can be related directly to the age and depositional environment of the source materials (clays, temper, and slip) used in the manufacturing process, although the introduction of contaminants at the time of construction must also be recognized. When incorporated into an integrated analysis, the microfossils may demonstrate provenance; contribute to a better understanding of the local environment and landscape; identify transportation routes; contribute to an understanding of the technology used, including construction methods and firing; and elucidate the use to which the vessels were put.


2019 ◽  
Vol 5 (10) ◽  
pp. 32-39 ◽  
Author(s):  
A. Sarukhanov ◽  
A. Morozova ◽  
N. Vasilyeva ◽  
D. Krylenkin

General information about biologically active substances flavonoids is concisely presented. The need for the quantitative determination of its content in products and the influence of product processing on flavonoid’s content is justified. Methods of qualitative and quantitative determination of flavonoids content in various products, medications and raw materials were studied. Based on this study the method of quantitative determination of flavonoid’s in samples of irradiated coriander is compiled and tested. Further ways to improve and adjust the compiled method for flavonoid’s content determination in irradiated samples via spectrophotometric analysis is considered.


1997 ◽  
Vol 11 (4) ◽  
pp. 415-419 ◽  
Author(s):  
J.J.M. Damen ◽  
R.A.M. Exterkate ◽  
J.M. Ten Cate

Transverse microradiography (TMR) of thin sections is the principal method for determining mineral changes in experimental lesions. Because it has become also the standard by which newly-developed methods are validated, demands on all steps of the procedure are high. Thin sections of enamel and dentin require high-precision cutting or lapping to preserve surface structures, but their different brittleness and elasticity preclude a uniform procedure. Image analysis permits the measurement of fine details at a μm scale, but because most studies are aimed at overall mineral changes, they are usually lost on broadening of the scan areas and averaging of experimental groups. Small errors in repositioning of the scan areas for repetitive measurements may yield distorted lesion profiles, while quantitative data such as the integrated mineral loss are hardly influenced. A major reason for "irreproducibility" of TMR are the different definitions of the lesion parameters as used by various research groups. We recommend that these definitions be agreed on if the full potential of TMR as an international standard is to be utilized.


Author(s):  
I. Nikitenko ◽  
O. Starik ◽  
M. Kutsevol

The present article is devoted to the mineralogical and petrographic research of raw materials of the collection of casting molds of the Bronze Age, found by the expedition of Dnipropetrovsk National Historical Museum named after D.I. Yavornytskyi during the excavations of the archaeological monument of Tokivske-1, located near the village Tokivske of Apostolove Rayon, Dnipropetrovsk Oblast. The finding of casting molds is of great importance, since it can be the evidence of bronze foundry production existence in the territory of the monument, which until now was regarded only as a megalithic place of worship. Provenance determination of the raw materials of casting molds can help to identify the role of Tokivske-1 in the system of metalworking cells of the Sabatynivska culture time (XVI–XIII centuries BC) and to establish its links with the ancient centers of mining of stone raw materials. According to previous petrographic studies, it is known that stone molds were made mainly of talc-chlorite-tremolite schists, since this material was easily processed and could withstand more castings than clay molds. Because of this, stone casting molds were highly valued, as well as bronze wares and ingots, and were transported over long distances. The purpose of the study was to establish links between the archaeological monument of Tokivske-1 and known mining and metallurgical centers of the Bronze Age, on the basis of mineralogical and petrographic research of raw materials of casting molds. As a result of the study of samples in thin sections and by X-ray diffraction analysis, it was established that the stone molds were mainly made of tremolite-chlorite-anthophyllite meta-ultrabazites. The determination of the origin of the rocks from which the casting molds were made was carried out by comparing their mineralogical and petrographic features with the features of similar rocks that form natural outcrops, as described in geological survey reports and literary data, and as observed by us in rock samples from natural outcrops in the Middle Dnipro and the Azov Sea areas. It was ascertained that the rocks from which all the casting molds of the collection were made do not form natural outcrops in the Middle Dnipro area and are not characteristic of the Kryvyi Rih area, which is considered to be the main center of raw materials extraction for the stone foundry forms of the Late Bronze Age on the territory of Ukraine. It was established that such rocks are more characteristic of the Western Azov Sea area, but one can not exclude another source of raw materials of the mold collection, in particular the Southern Urals, where bronze metallurgy was significantly developed and similar stone matrices were used. The obtained results suggest revision of established ideas on sources of supply of stone raw materials during the late Bronze Age.


Author(s):  
N.V. Alpatova ◽  
◽  
I.A. Dubrovskaya ◽  
M.V. Slobodyanik ◽  
◽  
...  

Flavonoids are an important component of plant materials; they have medicinal and biologically active properties. To use them as medicines, it is necessary to determine their qualitative and quantitative composition. The aim of this work is a comparative analysis of the identification and metrological characteristics of methods for the determination of flavonoids in plant raw materials and products of their processing. The paper presents a brief literature review of the main methods for the study of flavonoids. Certified and advanced techniques, such as NMR and mass spectrometry, have been discussed.


Author(s):  
Dr. G. Kaemof

A mixture of polycarbonate (PC) and styrene-acrylonitrile-copolymer (SAN) represents a very good example for the efficiency of electron microscopic investigations concerning the determination of optimum production procedures for high grade product properties.The following parameters have been varied:components of charge (PC : SAN 50 : 50, 60 : 40, 70 : 30), kind of compounding machine (single screw extruder, twin screw extruder, discontinuous kneader), mass-temperature (lowest and highest possible temperature).The transmission electron microscopic investigations (TEM) were carried out on ultra thin sections, the PC-phase of which was selectively etched by triethylamine.The phase transition (matrix to disperse phase) does not occur - as might be expected - at a PC to SAN ratio of 50 : 50, but at a ratio of 65 : 35. Our results show that the matrix is preferably formed by the components with the lower melting viscosity (in this special case SAN), even at concentrations of less than 50 %.


Phlebologie ◽  
2008 ◽  
Vol 37 (05) ◽  
pp. 247-252 ◽  
Author(s):  
V. S. Brauer ◽  
W. J. Brauer

SummaryPurpose: Comparison of qualitative and quantitative sonography with the lymphoscintigraphic function test and clinical findings in legs. Patients, methods: In 33 patients a lymphoscintigraphic function test of legs combined with measurement of lymph node uptake was performed and subsequently compared with sonography. Sonographic criteria were: Thickness of cutis, thickness of subcutanean fatty tissue and presence of liquid structures or fine disperse tissue structure of lower limbs, foots and toes. Results: In 51 legs uptake values lie in the pathologic area, in four legs in the grey area and in ten legs in the normal area. The cutis thickness in the lower leg shows no significant correlation with the uptake. The determination of the thickness of the subcutanean fatty tissue of the lower leg and of the cutis thickness of the feet turned out to be an unreliable method. In 47% of the medial lower legs and in 57% of the lateral lower legs with clinical lymphoedema sonography is falsely negative. Conclusion: Early lymphoedema is only detectable with the lymphoscintigraphic function test. In the case of clinical lymphoedema clinical examination is more reliable than sonography.


Author(s):  
Renita Prera Winsen

பேராக் மாநிலத்தில் தைப்பிங் மாவட்டத்தில் அமைந்துள்ள ஓர் இடைநிலைப்பள்ளியில் திருக்குறள் கற்றலின் வழி படிவம் 2 மாணவர்களின் உயர்நிலைச் சிந்தனைத் திறனை மேம்படுத்தும் முயற்சியில் ஆய்வு மேற்கொள்ளப்பட்டது. தேர்ந்தெடுக்கப்பட்ட 10 மாணவர்கள் இந்த ஆய்வில் உட்படுத்தப்பட்டனர். திருக்குறளில் மாணவர்களின் ஆளுமையைக் கண்டறிய அந்த இடைநிலைப்பள்ளியின் தமிழாசிரியரிடம் நேர்காணல் நடத்தப்பட்டது. மாணவர்களின் உயர்நிலைச் சிந்தனைத் திறனை மேம்படுத்த படிவம் 1 மற்றும் படிவம் 2-இல் வரையறுக்கப்பட்ட ஆறு திருக்குறள்கள் தேர்தெடுக்கப்பட்டன. தேர்ந்தெடுக்கப்பட்ட திருக்குறள்கள் யாவும் சீரமைக்கப்பட்ட புளூமின் அறிவுசார் முறைப்பாட்டியலின் துணைக்கொண்டு பலதரப்பட கேள்விகள் தயாரிக்கப்பட்டது. ஆறு வாரத் திருக்குறள் வகுப்பிற்குப் பின் இக்கேள்விகள் யாவும் மாணவர்களுக்கு வழங்கப்பட்டன. கேள்விக்கான பதில்களிலிருந்து மாணவர்களின் உயர்நிலைச் சிந்தனைத் திறனில் ஏற்பட்ட மாற்றங்கள் கண்டறியப்பட்டது. ஆய்வின் முடிவாக, முறையான திருக்குறள் கற்றலின் வழி மாணவர்களின் உயர்நிலைச் சிந்தனைத் திறனை மேம்படுத்த முடியும் என்பது உறுதிச் செய்யப்பட்டது. (This study has been conducted with the purpose of improving the level of HOTS (Higher order thinking skills) of Form 2 students through learning Thirukkural. For this study, the Thirukkural, a well-known literary work of Tamil Language was taken. Thus, this research was carried out in a secondary school which is located at Taiping, Perak. The research was carried out under the design of action research. The sample of this study consisted of ten Form 2 students. Besides that, a teacher also interviewed in order to know the students' personality in learning Thirukkural. In this research, the learning process of Thirukkural approach was implemented for 6 weeks. There are 6 couplets of Thirukkural selected according to the syllabus of Form 1 and Form 2. This six couplets of Thirukkural used to test the level of HOTS. The questions were created based on Thirukkural, according to Revised Bloom's Taxonomy. The data of the study was collected through pre-test, the questions asked in Thirukkural classes and post-test via qualitative and quantitative data collection tools. The findings obtained through qualitative and quantitative data collections showed that the level of HOTS through learning Thirukkural among Form 2 students has improved.)


Author(s):  
Diah Fauzi Ningtyas ◽  
Lidiman Sinaga

This study concerns on improving students’ achievement in writing procedure texts through word webbing technique. The research was conducted by using Classroom Action Research (CAR). The population was the 2012-2013 nine grade students of SMP Negeri 1 Batang Kuis. The number of students was 36, consisting of 21 females and 15 males. The procedure of the research was administrated into two cycles where each cycle consisted of three meetings. Each meeting included four steps namely: planning, action, observation, and reflection. There were two kinds of data collected during the study, qualitative and quantitative data. The instrument for collecting the quantitative data was the writing of procedure texts test while the qualitative data were gathered by using interview, diary notes and observation sheet. Based on the data analysis, the mean of students’ score in Test I was 53,47, for the Test II was 63,05, and for the Test III was 75 The qualitative data showed that the students were interested in the applying of Word webbing Technique. The conclusion is that Word Webbing Technique in writing Procedure Texts improves the students’ achievement in writing procedure texts. Keywords: Students’ achievement, writing, procedure text, word webbing


Author(s):  
Jiří Zimák ◽  
Kristýna Dalajková ◽  
Roman Donocik ◽  
Petr Krist ◽  
Daniel Reif ◽  
...  
Keyword(s):  

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