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The Thaikkal-Kadakkarappally Boat: an Archaeological Example of Medieval Shipbuilding in the Western Indian Ocean (2004)

Tomalin, Victoria ; Selvakumar, V. ; Nair, M. V. ; [et al.]

Oxford, UK : Blackwell Publishing, Ltd.

The @international journal of nautical archaeology 33 (2004), S. 0

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ISSN: 1095-9270

Source: Blackwell Publishing Journal Backfiles 1879-2005

Topics: Archaeology

Notes: Recent excavations at Kadakkarappally in Kerala, south-west India, have unearthed the remains of an iron-fastened boat, believed to predate the earliest known records for the use of iron in South Asian boatbuilding. The design departs significantly from the traditional view of Indian watercraft, although the use of locally available timber and the suitability of the design for use in the backwaters that characterise the region suggest that it was built and used in India. This is the first excavation of its type to take place in Kerala and contradicts the belief, widely held in Kerala, that the survival of organic remains has been negated by the tropical climate of the region.© 2004 The Nautical Archaeology Society

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1111/j.1095-9270.2004.00022.x

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Thermal behaviour of copolymers of methyl methacrylate and iso-octyl/iso-decyl methacrylate (1989)

Varma, I. K. ; Nair, M. V. ; Karan, V. K.

Springer

Journal of thermal analysis and calorimetry 35 (1989), S. 989-1007

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ISSN: 1572-8943

Source: Springer Online Journal Archives 1860-2000

Topics: Chemistry and Pharmacology

Description / Table of Contents: Zusammenfassung Mittels dynamischer Thermogravimetrie, Massenspektroskopie und Pyrolysengaschromatographie wurde das thermische Verhalten von Kopolymeren aus Methylmethacrylat (MMA) und Isooktyl/Isodecyl-methacrylat untersucht. Die Kopolymerproben waren bis 250 °C stabil. Ein vollständiger Gewichtsverlust wurde bei 400 °C beobachtet. Der Abbau sowohl der Homopolymere als auch der Kopolymere erfolgt durch eine überwiegende Abgabe von Monomeren.

Abstract: Резюме С помощью динамическ ой термогравиметрии, масс-спектроскопии и пиролизной газовой хроматограф ии изучено термическ ое поведение сополимеров метилме такрилата и изооктил /изо-децилметакрилат а. изооктил/изо-децилме такрилата. Сополимеры устойчив ы до температуры 250°. По лная потеря веса происходит при темпе ратуре около 400°. Дегра дация гомополимеров, также как и сополимеров протекает с преоблад ающей потерей мономе ра.

Notes: Abstract Thermal behaviour of copolymers of methyl methacrylate (MMA) with iso-octyliso-decyl methacrylate was investigated using dynamic thermogravimetry, mass spectroscopy and pyrolysis gas chromatography. The copolymer samples were stable upto 250 °C. Total loss in weight was observed around 400 °C. The degradation in homopolymers as well as copolymers proceeded by predominans loss of monomer.