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Titlebook: Nutrient Uptake and Cycling in Forest Ecosystems; Proceedings of the C L. O. Nilsson,R. F. Hüttl,U. T. Johansson Conference proceedings 199

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21#
發(fā)表于 2025-3-25 07:17:14 | 只看該作者
Monitoring uptake and contents of Mg, Ca and K in Norway spruce as influenced by pH and Al, using miuring long-range transport into the shoot, by multiple stable isotope labelling. The roots of two- and three-year-old spruce trees originating from soil culture were removed from the soil and, in part or in toto, exposed to labelling solutions containing the stable isotopes .Mg or .Mg, .K and .Ca or
22#
發(fā)表于 2025-3-25 10:04:04 | 只看該作者
Effects of ammonium sulphate application on the chemistry of bulk soil, rhizosphere, fine roots and er), amounts of living and dead fine roots, root length density and specific root length density were investigated in a 28 year old Norway spruce stand in SW Sweden. The treatments started in 1988. Core samples of the LFH layer and mineral soil layers were sampled in control (C) and ammonium sulphat
23#
發(fā)表于 2025-3-25 13:09:58 | 只看該作者
24#
發(fā)表于 2025-3-25 18:56:28 | 只看該作者
ologies for modern enterprises, enhancing their performance and their decision making processes. Since the 1990s the Internet has been the outstanding driving force for application development in all domains. An increase in the demand for resource sharing (e. g. , computing resources, s- vices, meta
25#
發(fā)表于 2025-3-25 20:04:36 | 只看該作者
26#
發(fā)表于 2025-3-26 02:33:31 | 只看該作者
Dale W. Colerest within the patent domain, because if a retrieval system makes some patents hard to find, then patent searchers will have a difficult time retrieving these patents. This may mean that a patent searcher could miss important and relevant patents because of the retrieval system. In this paper, we d
27#
發(fā)表于 2025-3-26 05:55:53 | 只看該作者
T. Persson,A. Wirén presented at GLOBE 2010.Gives a detailed coverage of the stThe LNCS journal Transactions on Large-Scale Data- and Knowledge-Centered Systems focuses on data management, knowledge discovery, and knowledge processing, which are core and hot topics in computer science. Since the 1990s, the Internet ha
28#
發(fā)表于 2025-3-26 10:05:22 | 只看該作者
29#
發(fā)表于 2025-3-26 15:35:24 | 只看該作者
H. Insam,A. Paloj?rvi only retrieve the sought information, but also filter out irrelevant documents, while giving the relevant ones the highest ranking. Focusing on biomedical information, this work investigates how to improve the ability for a system to find and rank relevant documents. To achieve this goal, we apply
30#
發(fā)表于 2025-3-26 19:37:26 | 只看該作者
C. E. Prescottl case is represented by genotyping procedures, which produce a large amount of documents whose content may represent a potentially important knowledge base. The exploitation of such information requires a proper classification of the elements in the knowledge base, and this can be effectively achie
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