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Application of multivariate statistical analysis to biological data : variations of monoterpene content in fresh needles of Picea abies (L.) Karst

Helanova V., Chvilickova I., Martinkova M., Meloun M., Kuban V.

Chemia Analityczna

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2006

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Vol. 51, No. 4

551-565

EN

Gas chrom atographic-mass spectrometric (GC-MS) analysis using an HP-INNO Wax capillary column (30 m x 0.25 mm x 0.5 ;μm film of polyethylene glycol) has been used for determination of individual monoterpenes in fresh coniferous needles ofPicea abies (L.) Karst. Concentration and composition pattern of monoterpenes were investigated with respect to the year of differentiation of needles (age of needles) and characteristics of shoots (length and total dry matter weight, DMW). Principal component analysis, analysis of variance, and cluster analysis allowed one to specify the content and composition pattern of essential oils and to find interrelations (also the latent ones) between year classes of needles.

PL

Opracowano chromatograficzną metodę (chromatografia gazowa sprzężona z detektorem masowym, GC-MS), stosując kolumnę kapilarną HP-INNO Wax (30 m & 0,25 mm x x 0,5 jam film glikolu polietylenowego), do oznaczania pojedynczych monoterpenów w świeżych igłach świerku pospolitego, Picea abies (L.) Karst. Określano stężenie i skład monoterpenów w zależności od wieku igieł i charakterystyki parametrów wzrostu pędów (długość i całkowity ciężar suchej masy, DMW). Analiza głównego składnika, analiza wariancji i analiza grup pozwoliły na określenie ilości i składu olejków eterycznych i znalezienie zależności (także tych ukrytych) występujących między klasami wieku igiei.

2

Exploration of univariate data in the textile metrology

Militky J., Meloun M.

Zeszyty Naukowe. Włókiennictwo / Politechnika Łódzka

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2000

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z. 58

165-173

EN

The main aim of data analysis in textile metrology is the extraction of relevant information from measurements. This contribution is focused to most frequent task, i.e univariate data treatment based on the analysis of experimentally determined values Xi, i=1,...N. The system of exploratory data analysis based on concept of quantile estimation is proposed. The main part of this contribution is devoted to the description of several graphical tools for data summarization and exploration. Selected techniques are used for analysis of the strength of basalt fibers at small gauge length. The program package ADSTAT for realization of the above-mentioned techniques is briefly described.

3

Data based probability models in the textile metrology

Militky J., Meloun M.

Zeszyty Naukowe. Włókiennictwo / Politechnika Łódzka

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2000

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z. 58

155-164

EN

The main aim of data analysis in textile metrology is the extraction of relevant information from measurements and creation of probability models. This contribution is focused to most frequent task, i.e univariate data treatment based on the analysis of experimentally determined values Xi, i=1,...N. The main part of this contribution is devoted to the description and camparison of data distribution with theoretical ones. Selected techniques are used for analysis of the strength of basalt fibers at small gauge length.

4

Data analysis for quality control in the textile branch

Militky J., Meloun M., Kupka K.

Zeszyty Naukowe. Włókiennictwo / Politechnika Łódzka

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2000

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z. 58

43-50

EN

The Box Cox transformation are given for construction of asymmetric quantiles and control limits for control charts. It is shown on simulated and real data that the transformation may significantly improve applicability of control charts.