Marja Ojala - Concepedia

Author

Marja Ojala

VTT Technical Research Centre of Finland

Also Known As

M Ojala, M. Ojala, Marja Ojala, Marja. Ojala

Publications

789

Citations

H-Index

Concepts

All Affiliations

VTT Technical Research Centre of Finland University of Helsinki

About

Marja Ojala is an author at VTT Technical Research Centre of Finland specializing in engineering, analytical chemistry, and medicine.

Top Concepts

#	Concept	H-Index	Publications	Citations
1	Engineering	10	11	636
2	Medicine	8	8	521
3	Chemical Engineering	6	6	162
4	Biochemistry	3	3	367
5	Natural Sciences	2	2	113

Marja Ojala

Publications

781

Citations

H-Index

Page 1

	Year	Citations
Quercetin Derivatives Are Deconjugated and Converted to Hydroxyphenylacetic Acids but Not Methylated by Human Fecal Flora in Vitro Anna‐Marja Aura, Karen O’Leary, Gary Williamson, Journal of Agricultural and Food Chemistry EngineeringNutraceutical IngredientPolyphenolicsBiosynthesisFecal Microflora	2002	303
On-Site Environmental Analysis by Membrane Inlet Mass Spectrometry V. Virkki, Raimo A. Ketola, Marja Ojala, Analytical Chemistry BioconcentrationEnvironmental ChemistryEnvironmental MonitoringEngineeringDonut Icon	1995	68
Studies on the optimization of growth and indole alkaloid production by hairy root cultures of <i>Catharanthus roseus</i> Leena Toivonen, Marja Ojala, Veli Kauppinen Biotechnology and Bioengineering	1991	62
Analysis of Volatile Organic Compounds in Water and Soil Samples by Purge-and-Membrane Mass Spectrometry Risto Kostiainen, Tapio Kotiaho, Ismo Mattila, Analytical Chemistry EngineeringPesticide-residue AnalysisSheet Membrane ModuleOrganic GeochemistryEnvironmental Chemistry	1998	48
Development of a membrane inlet mass spectrometric method for analysis of air samples Raimo A. Ketola, Marja Ojala, Harri Sorsa, Analytica Chimica Acta Air SamplesEnvironmental ChemistryAir SamplingEngineeringAnalytical Instrumentation	1997	46
Analysis of aldehydes and ketones from beer as O-(2,3,4,5,6-pentafluorobenzyl)hydroxylamine derivatives Marja Ojala Talanta Hydroxylamine DerivativesBiochemistryNatural SciencesOrganic ChemistryChemistry	1994	45
Indole alkaloid production by hairy root cultures ofCatharanthus roseus: Growth kinetics and fermentation Leena Toivonen, Marja Ojala, Veli Kauppinen Biotechnology Letters BiosynthesisEngineeringBotanyHairy Root CulturesPlant Cell Culture	1990	37
Analysis of Volatile Organic Sulfur Compounds in Air by Membrane Inlet Mass Spectrometry Raimo A. Ketola, Timo Mansikka, Marja Ojala, Analytical Chemistry EngineeringAir QualityChemistryAir SamplesEnvironmental Chemistry	1997	36
Detection of volatile organic sulfur compounds in water by headspace gas chromatography and membrane inlet mass spectrometry Marja Ojala, Raimo A. Ketola, Timo Mansikka, Journal of High Resolution Chromatography Chemical EngineeringChemical MeasurementEngineeringGas ChromatographyEnvironmental Engineering	1997	26
Purge-and-Membrane Mass Spectrometry, A Screening Method for Analysis of VOCs from Soil Samples Marja Ojala, Ismo Mattila, Virpi Tarkiainen, Analytical Chemistry	2001	24

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