常到 发表于 2025-3-28 16:38:42

A Brief Journey in Discrete Mathematicsdures used, together with alpha counting techniques, are important factors influencing lead-210 determinations and tailing corrections using its granddaughter product polonium-210. Optimization of these parameters is of prime importance to achieve economic and accurate analyses, especially at low lead-210 concentrations and small sample sizes.

RLS898 发表于 2025-3-28 21:43:17

Text and Tradition: An Overview of Sourcesecision and accuracy. Finally, some suggestions are made about how these erosion records may be used to model hydrological, pedological and geomorphological processes, thus linking together long term, short term and contemporary timescales of process operation.

笨拙的你 发表于 2025-3-29 01:35:45

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套索 发表于 2025-3-29 03:43:25

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farewell 发表于 2025-3-29 09:51:44

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Charitable 发表于 2025-3-29 14:25:25

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四指套 发表于 2025-3-29 18:51:17

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Acetaminophen 发表于 2025-3-29 22:13:49

Sediment characteristics in relation to cultivation history in two varved lake sediments from East ect the simultaneous reactions to land-use changes of both vegetation and sediment quality; reactions which are reflected more drastically in the sediment quality of small Heinälampi than the larger Lake Suurjärvi.

overwrought 发表于 2025-3-30 01:48:41

During the 65 papers were presented at seven sessions and 52 posters symposium displayed. Three late afternoon/evening special lectures were given, one of which was a memorial to the late Ed. Deevey, to whom this volume is dedicated. Associated with the symposium were five excursions to various par

宽宏大量 发表于 2025-3-30 07:22:34

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查看完整版本: Titlebook: Environmental History and Palaeolimnology; Proceedings of the V J. P. Smith,P. G. Appleby,P. E. O’Sullivan Conference proceedings 1991 Spri