scholarly journals Vectorial application for the illustration of archaeological lithic artefacts using the “Stone Tools Illustrations with Vector Art” (STIVA) Method

PLoS ONE ◽  
2021 ◽  
Vol 16 (5) ◽  
pp. e0251466
Author(s):  
Jacopo Niccolò Cerasoni
Keyword(s):  
Raw Materials ◽  
Morphological Characteristics ◽  
Stone Tools ◽  
Public Outreach ◽  
Step Method ◽  
Scientific Publications ◽  
Software Configuration ◽  
Adobe Illustrator ◽  
The Creation ◽  
Graphics Software

Lithic illustrations are often used in scientific publications to efficiently communicate the technological and morphological characteristics of stone tools. They offer invaluable information and insights not only on how stone raw materials were transformed into their final form, but also on the individuals that made them. Here, the “Stone Tools Illustrations with Vector Art” (STIVA) Method is presented, which involves the illustration of lithic artefacts using vectorial graphics software (Adobe Illustrator ©). This protocol follows an optimised step-by-step method, presenting ten major sections that constitute the creation of a lithic illustration: photography, vectorial software configuration, scale, outline, scar borders, ripples, cortex, symbols, composition, and export. This method has been developed to allow researchers, students and educators to create clear and competent illustrations for any application, from scientific publications to public outreach.

Small Object and Artefact Photography - 'SOAP' Protocol v1

2021 ◽  
Author(s):  
Jacopo Niccolo Cerasoni ◽  
Felipe Do Nascimento Rodrigues
Keyword(s):  
Human Activities ◽  
Small Object ◽  
Public Outreach ◽  
Post Processing ◽  
Step Method ◽  
High Quality ◽  
Scientific Publications ◽  
Objective Evidence ◽  
Set Up ◽  
Aesthetic Characteristics

Photography is among one of the most widely used methods in scientific publications to efficiently and objectively communicate morphological, technological and aesthetic characteristics of any object. Particularly, in the fields of archaeology and anthropology, the study of small objects and artefacts is fundamental for the better understanding of past and present human activities. For these purposes, photography offers a method for researchers and alike to use photographs as objective evidence for their findings, results and interpretations. Here, the Small Object and Artefact Photography (SOAP) protocol is presented. This protocol aims to offer a standardised and full-encompassing method for the most objective and scientifically reproducible application of photography for academic purposes. The protocol follows an optimised step-by-step method, presenting the practice of small object and artefact photography from the initial set up of the equipment, the best methods for camera handling and functionality use, to the application of post-processing softwares. This method has been developed for anyone interested in producing clear and high quality photographs for a multitude of applications, from academic and scientific publications to public outreach.

scholarly journals Mineralogical Characterization and Firing Temperature Delineation on Minoan Pottery, Focusing on the Application of Micro-Raman Spectroscopy

Heritage ◽  
2019 ◽  
Vol 2 (3) ◽  
pp. 2652-2664 ◽  
Author(s):  
E. Grammatikakis ◽  
Kyriakidis ◽  
D. Demadis ◽  
Cabeza Diaz ◽  
Leon-Reina
Keyword(s):  
Bronze Age ◽  
Firing Temperature ◽  
Raw Materials ◽  
Morphological Characteristics ◽  
Ceramic Technology ◽  
Phase Identification ◽  
Mineralogical Characterization ◽  
Analytical Protocol ◽  
Crucial Information ◽  
Analytical Tools

Ceramic objects in whole or in fragments usually account for the majority of findings in an archaeological excavation. Thus, through examination of the values these items bear, it is possible to extract important information regarding raw materials provenance and ceramic technology. For this purpose, either traditional examination protocols could be followed, focusing on the macroscopic/morphological characteristics of the ancient object, or more sophisticated physicochemical techniques are employed. Nevertheless, there are cases where, due to the uniqueness and the significance of an object of archaeological value, sampling is impossible. Then, the available analytical tools are extremely limited, especially when molecular information and mineral phase identification is required. In this context, the results acquired from a multiphase clay ceramic dated on Early Neopalatioal period ΜΜΙΙΙΑLMIA (1750 B.C.E.–1490 B.C.E.), from the Minoan Bronze Age site at Philioremos (Crete, Greece) through the application of Raman confocal spectroscopy, a nondestructive/ noninvasive method are reported. The spectroscopic results are confirmed through the application of Xray microdiffraction and scanning electron microscopy coupled with energy dispersive Xray spectrometry. Moreover, it is demonstrated how it is made possible through the application of microRaman (μRaman) spectroscopy to examine and collect crucial information from very small inclusions in the ceramic fabric. The aim of this approach is to develop an analytical protocol based on μRaman spectroscopy, for extracting firing temperature information from other ceramic finds (figurines) where due to their uniqueness sampling and analyses through other techniques is not possible. This information can lead to dating but also to firing kiln technology extrapolations that are very significant in archaeology.

scholarly journals Optimization of Cultural Conditions for Solid State Fermentation of Amylase Production by Aspergillus species

2013 ◽  
Vol 14 (1) ◽  
pp. 67-74
Author(s):  
Bina Gautam ◽  
Tika B Karki ◽  
Om Prakash Panta
Keyword(s):  
Solid State ◽  
Rice Bran ◽  
Solid State Fermentation ◽  
Food Industry ◽  
Raw Materials ◽  
Morphological Characteristics ◽  
Amylolytic Enzyme ◽  
Cultural Conditions ◽  
Amylase Production ◽  
Selection Of

Amylase is an amylolytic enzyme used in food industry which is generally produced by Aspergillus spp. under solid state fermentation. The present study is concerned with the isolation, screening and selection of suitable strains of Aspergillus spp. and optimization of cultural conditions for the biosynthesis of amylase. Rice and wheat brans were used as substrates which are readily available inexpensive raw materials for amylase production. From 85 samples of rice and wheat grains, 55 colonies obtained on potato dextrose agar (PDA) were suspected to be Aspergillus oryzae and only 35 colonies possessed the morphological characteristics similar to that of A. oryzae indicating the isolates were most likely the strains of A. oryzae. Of all the fungal isolates of Aspergillus spps., Asp.31 gave maximum production of amylase (720.782 IUgds-1) in solid state fermentation media. This strain was selected as a parental strain for optimization for cultural conditions. The obtained data were analyzed using SPSS- 11.5 program. Of all the substrates (rice bran, wheat bran and their mixture), rice bran was the best for producing amylase of highest activity 611.614 IUgds-1.The highest enzyme activity of 698.749 IUgds-1 was observed at 50% initial moisture level of the substrate. The optimum temperature was 25°C for producing the crude amylase enzyme with amylase activity of 577.757 IUgds-1. Nepal Journal of Science and Technology Vol. 14, No. 1 (2013) 67-74 DOI: http://dx.doi.org/10.3126/njst.v14i1.8924

One-Step Method of Carbon Thermal Reduction and Nitride to Produce Vanadium Nitrogen Alloy

2012 ◽  
Vol 476-478 ◽  
pp. 194-198 ◽  
Author(s):  
Zhi Chao Chen ◽  
Zheng Liang Xue ◽  
Wei Wang ◽  
Yue Yu ◽  
Qiang Liu ◽  
...  
Keyword(s):  
Carbon Black ◽  
Raw Materials ◽  
Thermal Reduction ◽  
Low Carbon ◽  
High Nitrogen ◽  
Step Method ◽  
Preferential Formation ◽  
One Step ◽  
Nitrogen Alloy ◽  
Product Forms

Keywords: vanadium pentoxide；carbon black；reduction and nitridation；vanadium nitrogen alloy. Abstract. The V2O5 extracted from low vanadium shale and carbon black are used as raw materials to prepare briquetting samples through mixing, grinding and pressing. The samples are prereduced, final reduced and nitrated to produce vanadium nitrogen alloy with high nitrogen content. Thermodynamic analysis and experiment results show that：（1）In order to avoid V2O5 volatilization loss during reduction, the briquetting samples should be pre-reduced for 4 hours below the melting point 670°C of V2O5, which can transform V2O5 into low valence vanadium oxide.（2）During V2O5 being self-reduction under N2 atmosphere, if the final reduction temperature is below 1271°C, the VN is preferential formation; if more than 1271°C, the reduced product forms V4C3.（3）To make a product with high nitrogen and low carbon content, the final reduction and nitride temperature should be controlled below 1300°C.

INNOVATIVE DIRECTIONS OF DEVELOPMENT OF VINEGAR PRODUCTION IN THE REPUBLIC OF BELARUS

2020 ◽  
Vol 13 (4(50)) ◽  
pp. 52-60
Author(s):  
A. A. Pushkar ◽  
D. V. Khlimankov ◽  
V. I. Solovei ◽  
A. V. Rybak ◽  
J. N. Shcherbitskaya
Keyword(s):  
Research And Development ◽  
Ethyl Alcohol ◽  
Raw Materials ◽  
Technological Scheme ◽  
Development Work ◽  
Organoleptic Characteristics ◽  
The Creation ◽  
The Republic

he article presents the results of research and development work on the creation of technologies for the production of new types of vinegar based on starch-containing raw materials with original organoleptic characteristics. The introduction of this technology at the enterprise provides for the introduction of a new stage of the mechanical-enzymatic destruction of starch-containing raw materials with its biotransformation into ethyl alcohol into the current technological scheme of the enterprise.

STAFF RESTRUCTURING AT PUBLIC COMPANIES AND ENTREPRENEURIAL TOOLS

2006 ◽  
Vol 12 (1) ◽  
pp. 119-130
Author(s):  
Radmila Grozdanić
Keyword(s):  
Unemployment Rate ◽  
Raw Materials ◽  
Corporate Entrepreneurship ◽  
Business Incubators ◽  
Risk Capital ◽  
Market Positioning ◽  
Public Companies ◽  
Surplus Labor ◽  
The Creation

Staff restructuring at public companies (an estimated 40% of Serbia’s 132,000 employees in public companies were made redundant in 2005) has a twofold impact: it raises the unemployment rate that is already worryingly high (34.7%) and it potentially creates new businesses with low sustainability prospects in the first three years as they are unprepared for long-term market positioning and high fiscal (73%) and parafiscal charges. The established practice of paying severance packages has failed to resolve the problem of unemployment in the long term, so good experiences of transition countries should be taken into account. In that sense, this study focuses on business incubators within public companies, aimed at staff restructuring, corporate entrepreneurship as an instrument of support to the creation of new businesses within the existing public companies, the orientation phase of corporate entrepreneurship among surplus labor, the possibility of supporting future entrepreneurs among surplus labor by providing them with repaired equipment and capacities, storage facilities, and raw materials needed by new businesses, and the creation of a risk capital fund for the insurance of loans and investments in the development of new capacities/skills of workers who will be made redundant.

Percussive-Abrasive Stone Tools from Chagyrskaya Cave: Results of Functional Analysis

2021 ◽  
Vol 49 (2) ◽  
pp. 23-31
Author(s):  
M. V. Seletsky ◽  
A. Y. Fedorchenko ◽  
P. V. Chistyakov ◽  
S. V. Markin ◽  
K. A. Kolobova
Keyword(s):  
Raw Materials ◽  
Stone Tools ◽  
Lithic Assemblage ◽  
Wear Analysis ◽  
Use Wear ◽  
Experimental Use ◽  
Abrasive Stone ◽  
Source Of Information ◽  
Reference Samples ◽  
Comprehensive Study

This article presents a comprehensive study of percussive-abrasive active stone tools from Chagyrskaya Cave, using experimental use-wear and statistical methods, supplemented by 3D-modeling. Experiments combined with use- wear analysis allowed us to determine the functions of these tools by comparing the working surfaces and use-wear traces in the Chagyrskaya samples with those in the reference samples. As a result, we identified 19 retouchers, four hammerstones for processing mineral raw materials, and one hammer for splitting bone, which indicates the dominance of secondary processing over primary knapping in the Chagyrskaya lithic assemblage. Using statistical analysis, we traced the differences in the dimensions of the manuports and lithics under study. These artifacts are a promising and underestimated source of information for identifying working operations associated with stone- and bone-processing; moreover, they can provide new data on the functional attribution of sites and the mobility of early hominins.

Experimental implement manufacture and use; a case study from Olduvai Gorge, Tanzania

1981 ◽  
Vol 292 (1057) ◽  
pp. 189-195 ◽  
Keyword(s):  
Raw Materials ◽  
Stone Tools ◽  
Technical Level ◽  
Archaeological Sites ◽  
Olduvai Gorge

Experiments involving the manufacture and use of stone tools are described. The original tools that served as models came from two sites in upper bed IV at Olduvai Gorge, Tanzania. The following conclusions are drawn. Widespread use of terms such as ‘crude’ or ‘refined’ in describing stone tools tells us nothing of the technical level achieved by the makers of the assemblages. The different qualities of the available raw materials, the forms in which they occur and how they function when used may have influenced the tool maker’s designs and the morphology of the tools. The experiments suggest uses for the tools that are relevant to our understanding of what is found on some archaeological sites.

Synthesis and Properties of Cerium Oxide Nanoparticles

2011 ◽  
Vol 299-300 ◽  
pp. 118-121 ◽  
Author(s):  
Yong Li ◽  
Jin Gui He ◽  
Xiao Wei Huang
Keyword(s):  
Cerium Oxide ◽  
Raw Materials ◽  
Morphological Characteristics ◽  
Treatment Temperature ◽  
Precipitation Method ◽  
Thermal Treatment Temperature ◽  
X Ray ◽  
Structure And Morphology ◽  
Dispersing Agent ◽  
Scanning Electron

Cerium oxide(CeO2)nanoparticles were synthesized via a precipitation method using cerous sulfate, ammonia water and cetyl three methyl brominated ammoniu(CTAB) as raw materials. The effect of thermal treatment temperature and dispersing agent on the crystal structure and morphology were discussed. The structural evolutions and morphological characteristics of the nanoparticles were investigated using X-ray diffractometery, scanning electron microscopy, Fourier transform infrared spectroscopy. The results showed that the broadening of CeO2peaks decreases by the increasing in heat-treatment temperature and the dispersing agent playes key roles in microstructure of the CeO2.

Screening and identification of pectinolytic bacteria for ramie degumming

2020 ◽  
pp. 004051752096828
Author(s):  
Lifeng Cheng ◽  
Shengwen Duan ◽  
Xiangyuan Feng ◽  
Ke Zheng ◽  
Qi Yang ◽  
...  
Keyword(s):  
Raw Materials ◽  
Enrichment Culture ◽  
Morphological Characteristics ◽  
Industrial Applications ◽  
Ramie Fiber ◽  
Bacterial Strains ◽  
Microbial Resources ◽  
Screening And Identification ◽  
Gum Content ◽  
Molecular Biology Method

To explore high-quality microbial resources with the capability of ramie degumming, we collected soil samples from rotten ramie and straw heaps. After enrichment culture by ramie raw materials, bacterial strains with the potential ramie-degumming function were screened using a pectin-hydrolysis plate. Dominant bacteria were identified by combining colonial morphological characteristics with the molecular biology method, and their ramie-degumming effects were verified through comprehensive biological degumming indices. Results demonstrated that Bacillus aryabhattai, Bacillus thuringiensis, Lysinibacillus fusiformis, and Acidovorax temperans were successfully obtained. The highest pectinase activity, 98.2 U/mg, was found by A. temperans. B. thuringiensis showed the best ramie-degumming effect. The residual gum content, single-fiber linear density, and bundle-breaking strength of the degummed ramie fiber treated with B. thuringiensis were 8.32%, 6.80 dtex, and 7.84 cN/dtex, respectively. The residual gum content of the ramie fiber treated with B. thuringiensis met the textile requirement (<10%), and the values of all other indicators were also satisfactory. Therefore, B. thuringiensis was an excellent strain for ramie degumming, indicating potential industrial applications.

Sign in / Sign up

Export Citation Format

Share Document