Extraordinary Burial of Trikolsky Burial Ground in the Lower Reaches of the Belaya River

The article introduces into scientific discourse the materials of the burial 15 of the Trikolsky burial ground studied in 1978 by V.A. Ivanov. This burial featured finds unique for the entire Pyany Bor culture – a glass bowl and a cassolette. The burial also contained beads made of single-color and multi-colored glass and glass with a metal inlay, pendants made of adult moose incisors, bronze plaques, openwork overlays, temple pendants, etc. The authors concluded that the unique items came to the Pyany Bor population as a result of contacts with Sarmatian nomads in the 1st century AD. In addition, the study presents data on the manufacturing material of certain items obtained using natural scientific methods. It was determined that the cassolette was made of a sedimentary rock – argillite. Metal items, except a leaf-shaped pendant made of precious metal, are made of tin bronze. A “gum” sample discovered next to a glass bowl contains matter of vegetable origin. Its components are betulinic and tricyclic acids contained in birch bark and conifer resin (oleoresin), respectively.

The Survival Rate and Growth of Juvenile Crayfish (Cherax quadricarinatus) With Different Types of Shelter

An experiment was designed to assess the relative performance of three shelter types on the survival and growth of red-claw crayfish (Cherax quadricarinatus). A 13 days old juvenile crayfish with an average length of 10 mm were cultured in 400 ml water of glass bowl and were provided with one of 3 types of shelter over 19 days. The various shelter types assessed were dried coconut leaves, bamboo and Hydrilla. Juveniles in each bowl were fed with Artemia twice a day morning and in the afternoon. There was no significant effect (P>0.05) of shelter type on the survival rate; however, there was a significant effect (P<0.05) on growth with dried coconut leaves (5.33%) performing significantly better than Hydrilla (2.33%) and bamboo (2.00%). This experiment showed that the shelter types provided had a significant effect on the growth but not in their survival.Keywords: Survival rate, Growth, juvenile Cherax quadricarinatus, ShelterABSTRAKTujuan penelitian ini adalah untuk menganalisis sintasan hidup dan pertumbuhan juvenil lobster air tawar (C. quadricarinatus) dengan shelter yang berbeda. Juvenil lobster yang berumur 13 hari dengan panjang rata rata 10 mm dipelihara dalam wadah toples kaca dengan diberikan ketiga perlakuan selama 19 hari. Ketiga jenis perlakuan adalah daun kelapa kering, bambu dan Hydrilla. Juvenil diberi pakan Artemia 2 kali sehari yaitu pada pagi dan sore hari. Hasil penelitian menunjukkan ketiga perlakuan tidak berbeda nyata terhadap sintasan hidup (P>0.05), namun berbeda nyata (P< 0.05 ) untuk pertumbuhan dengan daun kelapa kering (5.33%), Hydrilla (2.33%) dan bambu (2%). Penelitian ini menunjukkan bahwa jenis shelter memberikan pengaruh nyata terhadap pertumbuhan namun tidak berbeda nyata untuk sintasan hidup.Kata kunci: Sintasan hidup, Pertumbuhan, Juvenil Cherax quadricarinatus, Shelter

FAILURE RISK ANALYSIS GLASS BOWL PRODUCTION PROCESS USING FAILURE MODE EFFECT ANALYSIS AND FAULT TREE ANALYSIS METHODS (A CASE STUDY)

Product defects are a natural thing in a production process, but it would be better to avoid them. XYZ Industries is a company that produces glassware in the form of the glass bowl. The production failure experienced by this company is still high at 3.1% of the total production while the defect target that the company wants is 2%. The purpose of this study was to identify the types of defects that occur in glass bowl products on the production floor based on the results of searches of literature studies and deep interviews with employees, get the risk of failure of the largest production process in the RPN (Risk Priority Number) value of the FMEA method then analyzed again using the FTA method and determine the proposed improvements needed based on the analysis of defects that occur in glass bowl products, thus minimizing product defects and increasing company profits. In this study using the method of Failure Mode and Effect Analysis (FMEA) and the Fault Tree Analysis (FTA) method to identify failures that occur and provide prevention solutions. Based on the results of data processing, the proposed improvements given to the company as a whole are the company in order to pay more attention to the maintenance of the machine so that the machine can avoid the failure of its function

Creación de implantes 3D en procesos de conservación y restauración de vidrio arqueológico

This article describes the restoration of a glass bowl from the 16th-17thcentury by creating its three-dimensional (3D)model. The final purpose is to work with this model in order to avoid damaging situations that are associated with the manipulation of fragile objects. The gap areas, those corresponding to the missing fragments not found in the excavation, were carried out by constructing digital implants. A restricted area of the 3D model has been duplicated in order to accommodate it to confined intervals of the gap. The final implants were printed with acrylonitrile butadiene styrene (ABS) filament. These implants replace the lost areas and give stability back to the item by recovering the original morphology. The result can be compared with the outcome obtained by a traditional process, but differs due to the fact that requires minimum manipulation of the item, so it can contribute to preserve and safeguard the restored object. This is a non-invasive method which is offered as an alternative treatment, where the archaeological object is replaced by its virtual model in the steps of the process after 3D data acquisition. Significant differences have not been found in the 3D printing results obtained with the two types of filaments tested (white and clear).