Natural and Agricultural Sciences

CORRECTION in The Purpled World:
In Figure 18 on page 211, the image shown is the wrong one. The image correctly discussed in the text is actually CMS II.7, No. 17 = Arachne 160376. The correct image is available for download at https://arachne.dainst.org/search?q=160376
SUPPLEMENT TO BOOK AVAILABLE UPON REQUEST FROM AUTHOR (see below)

During the Aegean Bronze Age (ca. 3,000-1,050 BCE), the spread of woolen textiles triggered an increased demand for color. The dyes included those made from the labor-intensive processing of crocus stamens (saffron dye), and even more costly dyes made from certain sea snails (the muricidae / Murex). Minoan and Mycenaean textile producers (the palaces) mainly operated in the Black Sea region, rich in gold. "Purpled world" is Morris Silver's term for this emergent ideology. In Part I of The Purpled World, Silver demonstrates how the palaces embedded commercial motivation into traditional rituals, played out in purpose-built textile exhibition spaces, including labyrinths. In Part II, he mines textual, archaeological, and iconographic evidence to reveal the international textile trade. In Parts III and IV, Homer's Trojan War is seen as a trade war, and Homeric heroes have roles as traders and/or agents for Poseidon. In Part V, Silver considers the before-and-after of this "purpled world": Jason and the Argonauts, and the so-called collapse of the Mycenaean Palaces as a manifestation of vertical disintegration in the Aegean textile industry. The Purpled World integrates all these forms of evidence with interpretative insights from Maslovian psychology, as well as the disciplines of fashion studies, marketing, and economics.
Book available online at: https://chs.harvard.edu/read/the-purpled-world-marketing-haute-couture-in-the-aegean-bronze-age/

A  "Supplement" (September 24) concerned with a number of issues raised in the book is available to scholars who email the author ([email protected]) and include a brief reference to their research interest.

The objective of this study was to compare two closed-field plant production environments for tomato cultivation based on optimal vapor pressure deficit (VPD). Experiment was carried out in tropical lowlands of Malaysia by collecting 11 days of sample data during March (2014), from an evaporative cooled Polycarbonate Panel (PP) covered greenhouse and a naturally ventilated Screenhouse (SH). A computer application was designed and used for VPD calculation and data processing with respect to three light conditions (night, sun and cloud). The average and maximum VPD were respectively equal to 0.97 and 3.81 kPa for SH and 1.19 and 5.1 kPa for PP. The largest differences in the VPD of the two environments were between 2.9 and 3.1 kPa and were observed between hours of 12:30 and 17:30 at sun conditions. Results did not show significant differences in the two environments between hours of 00:00 and 8:00, when inside air temperature was between 24 to 26°C, and relative humidity was near 90%. The hypothesis that the PP, compared to SH, provides VPD closer to the optimal range was rejected. Further analysis of the results showed that linear correlations with R2>0.9 exist between daily averaged VPD of each greenhouses. It was concluded that VPD in the SH was closer to the optimal range in the entire days of experiment. The outcome of this study contributes to knowledge-based information for greenhouse growers by addressing questions about trends in VPD data, peak-hours and light conditions associated with maximum and minimum values.

Teaching of natural sciences subjects in the internats
Abstract:
There are many vides of media-resources in the learning of physics, chemistry, biology, astronomy in the orphanages. They help to make studying of orphans better and better. The work of a teacher with increasing collection of media-encyclopedias, electronic tutors and different educational sites do this process more effective.
Преподавание предметов естественнонаучного цикла в интернате
Аннотация:
Велико множество видов медиа-ресурсов в изучении естественнонаучных предметов в интернатах. Это позволяет делать обучение сирот всё лучше. Работа учителя с растущей коллекцией медиа-энциклопедий, электронных репетиторов и различных образовательных сайтов делает этот процесс более эффективным.