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Boolean: (bicycle AND helmet) OR (head AND protection) (always group AND in parenthesis)
Title: title:(climate change)
Author: author:("bohr niels" OR "bohr n") (avoid only full first name)
Phrase: "water pump control" (does not work with wildcards)
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title:(Automated AND analysis AND of AND <sup>1</sup><sup>5</sup>N AND and AND total AND N AND in AND plant AND material AND and AND soil)

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10 items by relevance
1 Conference paper

Automated analysis of 15N and total N in plant material and soil

Jensen, E.S.; Brink, M.

Stable Isotopes in Plant Nutrition, Soil Fertility and Environmental Studies — 1991, pp. 54-55

Year: 1991

Language: English

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2 Journal article

Evaluation of automated analysis of 15N and total N in plant material and soil

Jensen, E.S.

Plant and Soil — 1991, Volume 133, Issue 1, pp. 83-92

was lower than 0.1%. The CV of repeated analyses of N-15-labelled plant material and soil samples varied between 0.3% and 1.1%. The reproducibility of repeated total N analyses using the automated method was comparable to results obtained with a semi-micro Kjeldahl procedure. However, the automated method

Year: 1991

Language: English

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