A thermal analytical study of some modern and fossil resins from New Zealand (Record no. 46588)

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fixed length control field 01855nam a2200241Ia 4500
003 - CONTROL NUMBER IDENTIFIER
control field MX-MdCICY
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20250625153852.0
040 ## - CATALOGING SOURCE
Transcribing agency CICY
090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN)
Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-12380
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245 10 - TITLE STATEMENT
Title A thermal analytical study of some modern and fossil resins from New Zealand
490 0# - SERIES STATEMENT
Volume/sequential designation Thermochimica Acta, 326(1-2), p.143-149, 1999
520 3# - SUMMARY, ETC.
Summary, etc. Differential and thermogravimetric analyses of New Zealand modern, Pleistocene (<30 000 years)and Tertiary (>40 000 000 years)Agathis resins show a progressive change in their combustion pro®les with increasing age. Differences between modern resins and Pleistocene Kauri gums are minimal. Both exhibit thermal events in the low-temperature range, commencing near 1008C and extending to 3008C, that re¯ect the relative abundance of more reactive, undersaturated, carboxyl-rich, unpolymerized components in the younger samples. Diagenetic changes accompanying thermal maturation reveal a reduction in intensity of thermal responses below 2008C and a progression in the temperature of the major thermal combustion event, from 350±4508C in the younger resins, to 450±5808C in the 40 000 000-year-old copals. These variations in thermal behavior accord with a reduction in undersaturated bonds and functionalized groups, and an increase in the proportion of aromatized groups that characterize resin aging. Used judiciously, thermal behavior may indicate maturation histories and resin associations.
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element AGATHIS
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element NEW ZEALAND
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element RESIN
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element COPAL
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element THERMAL ANALYSIS
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Rodgers, K.A.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Currie, S.
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://drive.google.com/file/d/1dVIBNsKxA8D1clBoLycS-u7m642LwU7E/view?usp=drivesdk">https://drive.google.com/file/d/1dVIBNsKxA8D1clBoLycS-u7m642LwU7E/view?usp=drivesdk</a>
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Source of classification or shelving scheme Clasificación local
Koha item type Documentos solicitados
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  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-12380 25.06.2025 25.06.2025 Documentos solicitados