Publications - Peter Ruoff

175. M. Nygård, P. Ruoff: Coherent feedback leads to robust background compensation in oscillatory and non-oscillatory homeostats. bioRxiv, 2023, preprint. A revised version is available at PLoS ONE, 18(8): e0287083.

174. N. Nishiyama, P. Ruoff, J. C. Jimenez, F. Miwakeichi, Y. Nishiyama, T. Yata: Modeling the interaction between donor-derived regulatory T cells and effector T cells early after allogeneic hematopoietic stem cell transplantation. BioSystems, 2023, vol 227-228, 104889. https://doi.org/10.1016/j.biosystems.2023.104889.

173. J. V. Grini, M. Nygård, P. Ruoff: Homeostasis at different backgrounds: The roles of overlayed feedback structures in vertebrate photoadaptation. bioRxiv, 2023, preprint. [Supporting Material]. A revised version is available at PLoS ONE, 18(4): e0281490.

172. C. H. Selstø, P. Ruoff: A basic model of calcium homeostasis in non-excitable cells. bioRxiv, 2022, preprint. [Supporting Material].

171. M. Naseer, T. Persson, A.-G. R. Hjelkrem, P. Ruoff, M. J. Verheul: Life cycle assessment of tomato production for different production strategies in Norway. Journal of Cleaner Production, 2022, 372, 133659.

170. M. Naseer, T. Persson, I. Righini, C. Stanghellini, H. Maessen, P. Ruoff, M. J. Verheul: Bioeconomic evaluation of extended season and year-round tomato production in Norway using supplemental light. Agricultural Systems, 2022, 198, 103391.

169. Q. Waheed, H. Zhou, P. Ruoff: Kinetics and mechanisms of catalyzed dual-E (antithetic) controllers. bioRxiv, 2019, preprint. A revised version is available at PLoS ONE, 17(8): e0262371.

168. R. Kleppe, Q. Waheed, P. Ruoff: DOPA Homeostasis by Dopamine: A Control-Theoretic View. Int. J. Mol. Sci., 2021, 22, 12862.

167. G. Nygaard, P.D. Szigetvari, A.K. Grindheim, P. Ruoff, A. Martinez, J. Haavik, R. Kleppe, M. I. Flydal: Personalized Medicine to Improve Treatment of Dopa-Responsive Dystonia — A Focus on Tyrosine Hydroxylase Deficiency. J. Pers. Med. 2021, 11(11), 1186.

166. A. N. Tesfahun, M. Alexeeva, M. Tomkuviené, A. Arshad, P. Guragain, A. Klungland, S. Klimašauskas, P. Ruoff, S. Bjelland: Alleviation of C.C Mismatches in DNA by the Escherichia coli Fpg Protein. Frontiers in Microbiology, 2021, Volume 12, Article 608839. [Supporting Material].

165. D. M. Tveit, G. Fjeld, T. Drengstig, F. V. Filipp, P. Ruoff, and K. Thorsen: Exploring Mechanisms of Glucose Uptake Regulation and Dilution Resistance in Growing Cancer Cells. bioRxiv, 2020, preprint.

164. K. Thorsen, P. Ruoff,T. Drengstig: Antagonistic regulation with a unique setpoint, integral and double integral action. bioRxiv, 2018, preprint.

163. G. Drobac, Q. Waheed, B. Heidari, and P. Ruoff: An amplified derepression controller with multisite inhibition and positive feedback. bioRxiv, 2020, preprint. [Supporting Material]. A revised version is available at PLoS ONE, 16(3): e0241654.

162. D. Gonze and P. Ruoff: The Goodwin oscillator and its legacy. Biotheoretica, 2020. doi: 10.1007/s10441-020-09379-8.

161. K. Grøsvik, A. N. Tesfahun, I. Muruzábal-Lecumberri, G. T. Haugland, I. Leiros, P. Ruoff, J. T. Kvaløy, I. Knævelsrud, H. Ånensen, M. Alexeeva, K. Sato, A. Matsuda, I. Alseth, A. Klungland, S. Bjelland: The Escherichia coli alkA Gene Is Activated to Alleviate Mutagenesis by an Oxidised Deoxynucleoside. Frontiers in Microbiology, 2020, doi: 10.3389/fmicb.2020.00263. [Supporting Material].

160. P. Ruoff, N. Nishiyama: Frequency switching between oscillatory homeostats and the regulation of p53. bioRxiv, 2020, preprint. [Supporting Material]. A revised version with additional data is available at PLoS ONE, 15(5): e0227786.

159. K. Bårdsen, M. D. Gjerstad, M. Partinen, I. Kvivik, A. B. Tjensvoll, P. Ruoff, R. Omdal, and C. Brede: Considerably Lower Levels of Hypocretin-1 in Cerebrospinal Fluid Is Revealed by a Novel Mass Spectrometry Method Compared with Standard Radioimmunoassay. Analytical Chemistry, 2019, 91, 9323-9329.

158. M. Zakhartsev and P. Ruoff: Sensitivity analysis of a pathway with respect to fast and small temperature change. Journal of Thermal Biology, 2019, 83, 195-198.

157. K. Bårdsen, C. Brede, I. Kvivik, J. T. Kvaløy, K. Jonsdottir, A. B. Tjensvoll, P. Ruoff and R. Omdal: Interleukin-1-related activity and hypocretin-1 in cerebrospinal fluid contribute to fatigue in primary Sjögren's syndrome. J. Neuroinflammation, 2019, 16:102. https://doi.org/10.1186/s12974-019-1502-8.

156. K. Thorsen, T. Drengstig, and P. Ruoff: The effect of integral control in oscillatory and chaotic reaction kinetic networks. Physica D, 2019, 393: 38-46. https://doi.org/10.1016/j.physd.2019.01.002

155. P. Ruoff, O. Agafonov, D. M. Tveit, K. Thorsen, T. Drengstig: Homeostatic Controllers Compensating for Growth and Perturbations. bioRxiv, preprint. A revised version with additional data is available at PLoS ONE, 14(8): e0207831.

154. M. Alexeeva, M. N. Moen, K. Grøsvik, A. N. Tesfahun, X. M. Xu, I. Muruzabal-Lecumberri, K. M. Olsen, A. Rasmussen, P. Ruoff, F. Kirpekar, A. Klungland, and S. Bjelland: Excision of uracil from DNA by hSMUG1 includes strand incision and processing. Nucleic Acids Research, 2018, doi: 10.1093/nar/gky1184. [Supporting Material].

153. P. Ruoff: A Mathematical Toolbox. J. Biol. Rhythms, 2018, doi: 10.1177/0748730418787253

152. K. Thorsen, G. B. Risvoll, D. M. Tveit, P. Ruoff, T. Drengstig: Tuning of Physiological Controller Motifs. Accepted for publication in Linköping Electronic Conference (Eurosim 2016) Proceedings (ISSN: 1650-3686, eISSN: 1650-3740.

151. G. B. Risvoll, K. Thorsen, P. Ruoff, T. Drengstig: Variable setpoint as a relaxing component in physiological control. Physiological Reports, 2017, 5: e13408.

150. A. S. Figueiredo, T. Kouril, D. Esser, P. Haferkamp, P. Wieloch, D. Schomburg, P. Ruoff, B. Siebers, J. Schaber: Systems biology of the modified branched Entner-Doudoroff pathway in Sulfolobus solfataricus. PLoS ONE, 2017, 12(7): e0180331.

149. V. Brattland, I. Austvoll, P. Ruoff, T. Drengstig: Image Processing of Leaf Movements in Mimosa pudica. Conference Paper SCIA 2017, Tromsø, Norway, June 12-14. Published in Lecture Notes in Computer Science (LNSC), 2017, volume 10269: pp 77-87.

148. A. R. A. Kataya, M. T. Creighton, T. P. Napitupulu, C. Sætre, B. Heidari, P. Ruoff, and Cathrine Lillo: PLATINUM SENSITIVE 2 LIKE impacts growth, root morphology, seed set, and stress responses. PLoS ONE, 2017, 12(7): e0180478. [Supporting Material].

147. G. Fjeld, K. Thorsen, T. Drengstig, and P. Ruoff: The Performance of Homeostatic Controller Motifs Dealing with Perturbations of Rapid Growth and Depletion. J. Phys. Chem. B, 2017, 121, 6097-6107. [Supporting Material].

146. R. Omdal, E. Larssen, C. Brede, A. Hjelle, A. B. Tjensvoll, K. B. Norheim, K. Bårdsen, K. Jonsdottir, P. Ruoff, M. M. Nilsen: A Proteomic Signature of Fatigue in Primary Sjögren's Syndrome. Annual European Congress of Rheumatology. Madrid, Spain, June 14-17, 2017.

145. K. Thorsen, G. B. Risvoll, D. M. Tveit, P. Ruoff and T. Drengstig: Tuning of Physiological Controller Motifs. Paper presented in Section A01: Bio-/Ecological Systems. The 9th EUROSIM Congress on Modelling and Simulation, EUROSIM2016. Oulu, Finland, September 12-16, 2016.

144. R. Larbat, C. Robin, C. Lillo, T. Drengstig, P. Ruoff: Modeling the Diversion of Primary Carbon Flux into Secondary Metabolism under Variable Nitrate and Light/Dark Conditions. J. Theoret. Biol., 2016, 402, 144-157.

143. O. Agafonov, C. H. Selstø, K. Thorsen, X. M. Xu, T. Drengstig, and P. Ruoff: The Organization of Controller Motifs Leading to Robust Plant Iron Homeostasis. PLoS ONE, 2016, 11(1):e0147120. [Supporting Material].

142. E. Larssen, C. Brede, A. Hjelle, K. B. Øysæd, A. B. Tjensvoll, K. B. Norheim, K. Bårdsen, P. Ruoff, R. Omdal and M. M. Nilsen: Fatigue in Primary Sjögren's Syndrome; A Proteomic Study of Cerebrospinal Fluid (Meeting Abstract). Scandinavian Journal of Immunology, 2015, 81, 347.

141. E. Larssen, C. Brede, A. B. Hjelle, K. B. Øysæd, A. B. Tjensvoll, R. Omdal, and P. Ruoff: A rapid method for preparation of the cerebrospinal fluid proteome. Proteomics, 2015, 15, 10-15. doi: 10.1002/pmic.201400096.

140. K. Thorsen, O. Agafonov, C. H. Selstø, I. W. Jolma, X. Y. Ni, T. Drengstig, and P. Ruoff: Robust Concentration and Frequency Control in Oscillatory Homeostats. PLoS ONE 01/2014 9(9):e107766. [Supporting Material].

139. K. Thorsen, T. Drengstig, and P. Ruoff: Transepithelial glucose transport and Na+/K+ homeostasis in enterocytes: an integrative model. Am. J. Physiol. Cell Physiol., 2014, 307, C320-C337; doi:10.1152/ajpcell.00068.2013.

138. T. Drengstig, I. W. Jolma, K. Thorsen and P. Ruoff: Fysiologiske reguleringsmekanismer. Naturen, 2013, 4, 128-137.

137. A. Deutsch, L. N. Edmunds, A. Gosslau, R. Hardeland, A. Reinberg, C. Rensing, A. Rensing-Ehl, R. Rensing, V. Rippe, P. Ruoff, and M.H. Smolensky: Ludger Rensing (1932-2013) Obituary. Chronobiol. Int., 2013, 30, 739-740; doi: 10.3109/07420528.2013.802955.

136. K. Thorsen, P. Ruoff, and T. Drengstig: Control Theoretic Properties of Physiological Controller Motifs. IEEE International Conference on System Science and Engineering, Budapest, Hungary, July 4-6, 2013.

135. T. Kouril, P. Wieloch, J. Reimann, M. Wagner, M. Zaparty, S.-V. Albers, D. Schomburg, P. Ruoff, and B. Siebers: Unraveling the function of the two Entner-Doudoroff branches in the thermoacidophilic Crenarchaeon Sulfolobus solfataricus P2. FEBS J., 2013, 280, 1126-1138; doi: 10.1111/febs.12106. [Supporting Material].

134. T. Kouril, A. Kolodkin, M. Zaparty, R. Steuer, P. Ruoff, H. V. Westerhoff, J. Snoep, B. Siebers and the SulfoSYS consortium: Sulfolobus Systems Biology: Cool Hot Design for Metabolic Pathways. In: Systems Microbiology. Current Topics and Applications. B. D. Robertson and B. W. Wren, Eds., Caister Academic Press, 2012, Norfolk, UK, pp. 151-169.

133. T. Drengstig, I. W. Jolma, X. Y. Ni, K. Thorsen, X. M. Xu, and P. Ruoff: A Basic Set of Homeostatic Controller Motifs. Biophys. J., 2012, 103, 2000-2010; doi: 10.1016/j.bpj.2012.09.033. [Supporting Material].

132. A. Kitanovic, F. Bonowski, F. Heigwer, P. Ruoff, I. Kitanovic, C. Ungewiss, and S. Wölf: Acetic acid treatment in S. cerevisiae creates significant energy deficiency and nutrient starvation that is dependent on the activity of the mitochondrial transcriptional complex Hap2-3-4-5. Frontiers in Molecular and Cellular Oncology, 2012, 2, Article 118.

131. T. Drengstig, X. Y. Ni, K. Thorsen, I. W. Jolma, and P. Ruoff: Robust Adaptation and Homeostasis by Autocatalysis. J. Phys. Chem. B, 2012, 116, 5355-5363; doi: 10.1021/jp3004568I.

130. R. K. B. Farmen, I. Haukeli, P. Ruoff, E. S. Frøyland: Assessing the presence of female DNA on post-coital penile swabs: Relevance to the investigation of sexual assault. J. Forensic and Legal Medicine, 2012, doi:10.1016/j.jflm.2012.02.029.

129. D. M. Pampanin, E. Larssen, F. Provan, M. Sivertsvik, P. Ruoff, and M. O. Sydnes: Detection of Small Bioactive Peptides from Atlantic Herring (Clupea harengus L.). Peptides, 2012, 34, 423-426; doi: 10.1016/j.peptides.2012.02.005.

128. Y. Huang, T. Drengstig, and P. Ruoff: Integrating fluctuating nitrate uptake and assimilation to robust homeostasis. Plant, Cell & Environment, 2012, 35, 917-928; doi: 10.1111/j.1365-3040.2011.02462.x

127. T. Drengstig, T. Kjosmoen, and P. Ruoff: On the Relationship between Sensitivity Coefficients and Transfer Functions of Reaction Kinetic Networks. J. Phys. Chem. B, 115, 6272-6278; doi: 10.1021/jp200578e. Publication Date (Web): April 27, 2011. [Supporting Material].

126. T. Drengstig, T. Kjosmoen, and P. Ruoff: Studying Adaptation and Homeostatic Behaviors of Kinetic Networks by using MATLAB. In: Yeast Genetic Networks, Methods in Molecular Biology, Vol. 734, J. M. Walker, Series Editor; A. Becskei, Editor; 2011, Humana Press, ISBN 978-1-61779-085-0. [Suppl. Material].

125. T-S. Huang, P. Ruoff, and P. G. Fjelldal: Effect of Continuous Light on Daily Levels of Plasma Melatonin and Cortisol and Expression of Clock Genes in Pineal Gland, Brain, and Liver in Atlantic Salmon Postsmolts. Chronobiology International, 2010, 27, 1715-1734.

124. T-S. Huang, P. Ruoff, and P. G. Fjelldal: Diurnal Expression of Clock Genes in Pineal Gland and Brain and Plasma Levels of Melatonin and Cortisol in Atlantic Salmon Parr and Smolts. Chronobiology International, 2010, 27, 1697-1714.

123. T. M. Osland, J. Fernø, B. Håvik, P. Ruoff, O. D. Laerum, and V. M. Steen: Lithium differentially affects clock gene expression in serum-shocked NIH-3T3 cells. Journal of Psychopharmacology, 2010, published online 13 September 2010, DOI: 10.1177/0269881110379508.

122. F. Bonowski, A. Kitanovic, P. Ruoff, J. Holzwarth, I. Kitanovic, V. N. Bui, E. Lederer, S. Wölfl: Computer controlled automated assay for comprehensive studies of enzyme kinetic parameters. PLoS ONE, 2010, 5(5): e10727. doi:10.1371/journal.pone.0010727. [Supporting Material].

121. I. W. Jolma, X. Y. Ni, L. Rensing, and P. Ruoff: Harmonic Oscillations in Homeostatic Controllers: Dynamics of the p53 Regulatory System. Biophys. J., 2010, 98, 743-552. [Supporting Material].

120. I. W. Jolma, O. D. Laerum, C. Lillo, and P. Ruoff: Circadian Oscillators in Eukaryotes. WIREs Systems Biology and Medicine, 2010, published online Febr. 4, 2010. DOI: 10.1002/wsbm.81.

119. L. Rensing and P. Ruoff: Funktionsprinzipien der Entscheidungsfindung auf zellulärer, neuronaler und sozialer Ebene. Naturwissenschaftliche Rundschau, 2009, 62, 565-573.

118. X. Y. Ni, T. Drengstig, and P. Ruoff: The control of the controller: Molecular mechanisms for robust perfect adaptation and temperature compensation. Biophys. J., 2009, 97, 1244-1253. [Suppl. Material].

117. Ø. Johansen, T. Ryen, T. Eftestøl, T. Kjosmoen, and P. Ruoff: Splice Site Prediction Using Artificial Neural Networks. In F. Masulli, R. Tagliaferri, and G. M. Verkhivker, (Eds.): Lecture Notes in Bioinformatics, 2009, 5488, 102-113.

116. I. Knævelsrud, G. Slupphaug, I. Leiros, A. Matsuda, P. Ruoff, and S. Bjelland: Opposite-base dependent excision of 5-formyluracil from DNA by hSMUG1. J. Radiat. Biol., 2009, 85, 413-420.

115. L. Rensing and P. Ruoff: How can yeast cells decide between three activated MAP kinase pathways? A model approach. J. Theoret. Biol., 2009, 257, 578-587.

114. S. V. Albers, N. K. Birkeland, A. J. Driessen, S. Gertig, P. Haferkamp, H. P. Klenk, T. Kouril, A. Manica, T. K. Pham, P. Ruoff, C. Schleper, D. Schomburg, K. J. Sharkey, B. Siebers, P. Sierocinski, R. Steuer, J. van der Oost, H. V. Westerhoff, P. Wieloch, P. C. Wright, and M. Zaparty: SulfoSYS (Sulfolobus Systems Biology): towards a silicon cell model for the central carbohydrate metabolism of the archaeon Sulfolobus solfataricus under temperature variation. Biochem. Soc. Trans., 2009, 37, 58-64.

113. K. M. Olsen, R. Slimestad, U. S. Lea, C. Brede, T. Løvdal, P. Ruoff, M. Verheul, and C. Lillo: Temperature and nitrogen effects on regulators and products of the flavonoid pathway: Experimental and kinetic model studies. Plant, Cell & Environment, 2009, doi: 10.1111/j.1365-3040.2008.01920.x. [Suppl. Material].

112. T. Drengstig, H. R. Ueda, and P. Ruoff: Predicting perfect adaptation motifs in reaction kinetic networks. J. Phys. Chem. B, 2008, 112, 16752-16758. [Suppl. Material].

111. C. I. Hong, P. Ruoff, J. J. Loros, and J. C. Dunlap: Closing the circadian negative feedback loop: FRQ-dependent clearance of WC-1 from the nucleus. Genes & Development, 2008, doi:10.1101/gad.1706908, published online. [Suppl. Material].

110. J. J. Tyson, R. Albert, A. Goldbeter, P. Ruoff, and J. Sible: Biological Switches and Clocks. J. R. Soc. Interface, 2008, doi:10.1098/rsif.2008.0179.focus, published online.

109. C. Lillo, U. S. Lea and P. Ruoff: Nutrient Depletion as a Key Factor for Manipulating Gene Expression and Product Formation in Different Branches of the Flavonoid Pathway. Plant, Cell & Environment, 2008, 31, 587-601. [Suppl. Material].

108. C. I. Hong, I. W. Jolma, J. J. Loros, J. C. Dunlap and P. Ruoff: Simulating dark expressions and interactions of frq and wc-1 in the Neurospora circadian clock. Biophys. J., 2008, 94, 1221-1232. [Suppl. Material].

107. S. O. Aase and P. Ruoff: Semi-Algebraic Optimization of Temperature Compensation in a General Switch-Type Negative Feedback Model of Circadian Clocks. J. Math. Biol., 2008, 56(3), 279-292.

106. I. Leiros, M. P. Nabong, K. Grøsvik, J. Ringvoll, G. T. Haugland, L. Uldal, K. Reite, I. K. Olsbu, I, Knævelsrud, E. Moe, O. A. Andersen, N.-K. Birkeland, P. Ruoff, A. Klungland and S. Bjelland: Structural basis for enzymatic excision of N1-methyladenine and N3-methylcytosine from DNA. EMBO J., 2007, 26, 2206-2217. [Suppl. Material].

105. P. Ruoff, M. Zakhartsev and H. V. Westerhoff: Temperature Compensation through Systems Biology. FEBS J., 2007, 274(4), 940-950. [Suppl. Material].

104. B. Aase, I. W. Jolma and P. Ruoff: Influence of Lithium ions on conidiophore size in Neurospora crassa. Fungal Genetics Newsletter, 2006, 53, 34-36.

103. I. W. Jolma, G. Falkeid, M. Bamerni and P. Ruoff: Lithium Leads to an Increased FRQ Protein Stability and to a Partial Loss of Temperature Compensation in the Neurospora circadian clock. J. Biol. Rhythms, 2006, 21, 327-334.

102. A. Mehra, C. I. Hong, M. Shi, J. J. Loros, J. C. Dunlap and P. Ruoff: Circadian rhythmicity by autocatalysis. PLoS Computational Biology, 2006, 2(7): e96.

101. P. Ruoff, J. J. Loros and J. C. Dunlap: The relationship between FRQ-protein stability and temperature compensation in the Neurospora circadian clock. PNAS, 2005, 102, 17681-17686.

100. P. Ruoff, M. K. Christensen and V. K. Sharma: PER/TIM-mediated amplification, gene dosage effects and temperature compensation in an interlocking-feedback loop model of the Drosophila circadian clock. J. Theoret. Biol., 2005, 237, 41-57.

99. P. Ruoff and L. Rensing: Temperature effects on circadian clocks. J. Thermal Biol., 2004, 29, 445-456.

98. M. K. Christensen, G. Falkeid, J. J. Loros, J. C. Dunlap, C. Lillo, and P. Ruoff: A Nitrate-Induced frq-Less Oscillator in Neurospora crassa. J. Biol. Rhythms, 2004, 19, 280-286.

97. P. Ruoff: Temperature-Compensation in Biological Clocks: Models and Experiments. In: Function and Regulation of Cellular Systems: Experiments and Models, ed. by A. Deutsch, M. Falcke, J. Howard and W. Zimmermann, Birkhäuser Verlag, Basel, 2004, pp. 19-29.

96. P. Ruoff, M. K. Christensen, J. Wolf and R. Heinrich: Temperature dependency and temperature-compensation in a model of yeast glycolytic oscillations. Biophys. Chem. 2003, 106, 179-192.

95. L. Rensing and P. Ruoff: Temperature Effect on Entrainment, Phase Shifting, and Amplitude of Circadian Clocks and its Molecular Bases. Chronobiology International 2002, 19, 807-864.

94. P. Ruoff: Comment on A Linear Chemical Cycle and Oscillations. J. Phys. Chem. A 2002, 106, 7075.

93. L. Treindl, T. Matsumura-Inoue and P. Ruoff: Influence of Visible Light and Malonic Acid Derivatives on the Autocatalytic Oxidation of Ru(II) by Bromate Ions. J. Phys. Chem. A 2002, 106, 5271-5278.

92. P. Ruoff and I. Slewa: Circadian Period Lengths of Lipid Synthesis Mutants (cel , chol-1 ) of Neurospora show defective Temperature- but intact pH-Compensation. Chronobiology International, 2002, 19, 517-529.

91. I. Knævelsrud, P. Ruoff, H. Ånensen, A. Klungland, S. Bjelland, and N.-K. Birkeland: Excision of uracil from DNA by the hyperthermophilic Afung protein is dependent on the opposite base and stimulated by heat-induced transition to a more open structure. Mutation Research 2001, 487, 173-190.

90. L. Rensing, U. Meyer-Grahle and P. Ruoff: Biological Timing and the Clock Metaphor: Oscillatory and Hourglass Mechanisms. Chronobiology International 2001, 18, 329-369.

89. C. Lillo, C. Meyer and P. Ruoff: The Nitrate Reductase Circadian System. The Central Clock Dogma Contra Multiple Oscillatory Feedback Loops. Plant Physiol. 2001, 125, 1554-1557.

88. P. Ruoff, M. Vinsjevik, C. Monnerjahn and L. Rensing: The Goodwin Model: Simulating the Effect of Light Pulses on the Circadian Sporulation Rhythm of Neurospora crassa. J. Theoret. Biol. 2001, 209, 29-42.

87. A. Gosslau, P. Ruoff, S. Mohsenzadeh, U. Hobohm and L. Rensing: Heat shock and oxidative stress-induced exposure of hydrophobic protein domains as common signal in the induction of hsp68. J. Biol. Chem. 2001, 276, 1814-1821.

86. L. Treindl, D. Knudsen, T. Nakamura, T. Matsumura-Inoue, K. B. Jørgensen and P. Ruoff: The Light-Perturbed Ru-Catalyzed Belousov-Zhabotinsky Reaction: Evidence for Photochemically Produced Bromous Acid and Bromide Ions by Phase Response Analysis. J. Phys. Chem. A 2000, 104, 10783-10788.

85. P. Ruoff, A. Behzadi, M. Hauglid, M. Vinsjevik and H. Havås: pH-Homeostasis of the Circadian Sporulation Rhythm in Clock Mutants of Neurospora crassa. Chronobiology International 2000, 17, 733-750.

84. P. Ruoff, M. Vinsjevik and L. Rensing: Temperature Compensation in Biological Oscillators: A Challenge for Joint Experimental and Theoretical Analysis. Comments on Theoretical Biology 2000, 5, 361-382.

83. P. Ruoff, M. Vinsjevik, C. Monnerjahn and L. Rensing: The Goodwin Oscillator: On the Importance of Degradation Reactions in the Circadian Clock. J. Biol. Rhythms 1999, 14, 469-479.

82. A. Behzadi, R. Hatleskog and P. Ruoff: Hysteretic enzyme adaptation to environmental pH: Change in storage pH of alkaline phosphatase leads to a pH-optimum in opposite direction to the applied change. Biophys.Chem. 1999, 77, 99-109.

81. P. Ruoff, M. Vinsjevik, S. Mohsenzadeh and L. Rensing: The Goodwin Model: Simulating the Effect of Cycloheximide and Heat Shock on the Sporulation Rhythm of Neurospora crassa. J. Theoret. Biol. 1999, 196, 483-94.

80. S. Mohsenzadeh, W. Saupe-Thies, G. Steier, T. Schroeder, F. Fracella, P. Ruoff and L. Rensing: Temperature adaptation of house keeping and heat shock expression in Neurospora crassa. Fungal Genetics & Biology 1998, 25, 31-43.

79. P. Ruoff, A. Bjørnstad and M. Jakobsen: The complete UV-visible photoluminescence spectrum of aqueous Ce(III). Chem. Phys. Letters 1998, 291, 249-251.

78. P. Ruoff: Models of Temperature Compensation in Biological Rhythms. In: Biological Clocks. Mechanisms and Applications, Y. Touitou (ed.), Elsevier Science, Amsterdam, 1998, [ISBN: 0-444-82503-7] pp. 73-80.

77. P. Ruoff (guest editor): Chronobiology International 1997, 14, no. 5, Special Issue: Temperature-Compensation of Circadian and Ultradian Clocks.

76. C. Lillo, S. Kazazaic, P. Ruoff and C. Meyer: Characterization of Nitrate Reductase from Light- and Dark-Exposed Leaves. Plant Physiol. 1997, 114, 1377-1383.

75. L. Treindl, P. O. Kvernberg and P. Ruoff: Influence of Oxygen and Organic Substrate on Catalyst Oxidation by Bromate Ion in the Belousov-Zhabotinskii Reaction, J. Phys. Chem. A. 1997, 101, 4606-4612.

74. L. Treindl, T. Hemmingsen and P. Ruoff: The Belousov-Zhabotinskii Oscillations during Chemical or Electrochemical Generation of Silver Ions, Chem. Phys. Letters 1997, 269, 263-267.

73. P. Ruoff and C. Lillo: Evidence for increased proton dissociation in low- activity forms of dephosphorylated squash-leaf nitrate reductase, Biophys. Chem. 1997, 67, 59-64.

72. L. Rensing, S. Mohsenzadeh, P. Ruoff, and U. Meyer: Temperature compensation of the circadian period length - a special case among general homeostatic mechanisms of gene expression? Chronobiology International 1997, 14, 481-498.

71. P. O. Kvernberg, E. W. Hansen, B. Pedersen, A. Rasmussen and P. Ruoff: Oxidation of Methylmalonic Acid by Cerium(IV). Evidence for Parallel Reaction Pathways, J. Phys. Chem. A 1997, 101, 2327-2331.

70. P. Ruoff, L. Rensing, R. Kommedal, S. Mohsenzadeh: Modelling Temperature Compensation in Chemical and Biological Oscillators, Chronobiology International 1997, 14, 499-510.

69. K. Lekvam and P. Ruoff: Kinetics and Mechanism of Methane Hydrate Formation and Decomposition in Liquid Water. Modelling of Hysteresis, J. Crystal Growth 1997, 179, 618-624.

68. P. Ruoff, S. Mohsenzadeh and L. Rensing: Circadian Rhythm and Protein Turnover: The Influence of Temperature on the Period Lengths of Clock Mutants simulated by the Goodwin Oscillator, Naturwissenschaften 1996, 83, 514- 517.

67. T. Jakobsen, J. Sjöblom and P. Ruoff: Kinetics of gas hydrate formation in emulsion. The model system trichlorofluormethane/ water/non-ionic surfactant studied by means of dielectric spectroscopy. Colloids and Surfaces A: Physicochemical and Engineering Aspects 1996, 112, 73-84.

66. G. Nagy, E. Körös, N. Oftedal, K. Tjelflaat and P. Ruoff: Effect of Temperature in Cerium Ion Catalyzed Bromate Driven Oscillators, Chem. Phys. Letters 1996, 250, 255-260.

65. P. Ruoff and L. Rensing: The Temperature-Compensated Goodwin Oscillator Simulates Many Circadian Clock Properties. J. Theoret. Biol. 1996, 179, 275- 285.

64. G. M. Solli and P. Ruoff: Inner Filter Effect: Phase Relationships between Oscillatory Fluorescence and Oscillatory Ru(II) Concentrations in the Belousov- Zhabotinsky Reaction. J. Chem. Phys. 1995, 103, 1440-1447.

63. P. Ruoff: Antagonistic Balance in the Oregonator: About the Possibility of Temperature-Compensation in the Belousov-Zhabotinsky Reaction. Physica D 1995, 84, 204-211.

62. T. M. Klaveness, P. Ruoff, J. Kolnes: Kinetics of the Crosslinking of Polyacrylamide with Cr(III). 3. Rheological Meaurements of the Gelation. J. Phys. Chem. 1995, 99, 8255.

61. T. M. Klaveness and P. Ruoff: Kinetics of the Crosslinking of Polyacrylamide with Cr(III). II. Effects of pH and Temperature. J. Phys. Chem. manuscript.

60. P. Ruoff: General Homeostasis in Period and Temperature-Compensated Chemical Clock Mutants by Random Selection Conditions. Naturwissenschaften 1994, 81, 456.

59. T. M. Klaveness and P. Ruoff: Kinetics of the Crosslinking of Polyacrylamide with Cr(III). Analysis of Possible Mechanisms. J. Phys. Chem. 1994, 98, 10119-10123.

58. P. Ruoff: Photoluminescence in the Cerium-Ion Catalyzed Belousov- Zhabotinsky Reaction. Chem. Phys. Letters 1994, 226, 295.

57. K. Lekvam and P. Ruoff: Reaction Kinetic Simulations of Methane Hydrate Formation in Liquid Water, Ann. New York Acad. Sci. 1994, 715, 558.

56. C. Lillo and P. Ruoff: Analogous pH Response of Hysteretic and Light/Dark Modulated Forms of Nitrate Reductase, Working Papers from Rogaland University Center 1993, No. 181.

55. K. Lekvam and P. Ruoff: A Reaction Kinetic Mechanism for Methane Hydrate Formation in Liquid Water, J. Am. Chem. Soc. 1993 115, 8565; ibid. 1994, 116, 4529.

54. P. Ruoff: Exitations Induced by Fluctuations: An Explanation of Stirring Effects and Chaos in Closed Anaerobic Classical Belousov-Zhabotinsky Systems, J. Phys. Chem. 1993, 97, 6405.

53. C. Lillo, V. Bjordal, K. Johansen, T. Netteland, R.E. Pedersen, E. Svendsen, L. Sølvberg, P. Ruoff, S.O. Grimstad: Effects of Membrane Filtration on Organic Matter and Viable Bacteria in Recirculating Nutrient Solutions in Greenhouses. Acta Agric. Scandinavica, Sect B, Soil and Plant Science 1993, 43, 121.

52. P. Ruoff: Chaos in Batch Belousov-Zhabotinsky Systems, J. Phys. Chem. 1992, 96 , 9104.

51. K. Lekvam, N. K. Hidle, T. M. Svartås, Suzana Kostic, and P. Ruoff: Nonmonotonic Reaction Rates in the Formation of Methane Hydrate From Liquid Water, Working Papers from Rogaland University Center 1992, No.161.

50. C. Lillo and P. Ruoff: Hysteretic Behavior of Nitrate Reductase: Evidence of an Allosteric Binding Site for Reduced Pyridine Nucleotides, J. Biol. Chem. 1992, 267, 13456.

49. P. Ruoff: Introducing Temperature-Compensation in any Reaction Kinetic Oscillator Model. J. Interdiscipl. Cycle Research 1992, 23 , 92.

48. P. Ruoff, H.-D. Försterling, L. Györgyi, and R. M. Noyes: Bromous Acid Perturbations in the Belousov-Zhabotinsky Reaction. Experiments and Model Calculations of Phase Response Curves. J. Phys. Chem. 1991, 95, 9314.

47. P. Ruoff and Cathrine Lillo: Molecular Oxygen as Electron Acceptor in the NADH-Nitrate Reductase System. Biochem. Biophys. Res. Commun. 1990, 172, 1000.

46. P. Ruoff, M. Varga, and E. Körös: Iodide-Catalysis in Metal-Ion- Free Bromate Oscillators; in "Spatial Inhomogeneities and Transient Behaviour in Chemical Kinetics", P. Gray, G. Nicolis, F. Baras, P. Borckmans and S. K. Scott, eds.; Manchester University Press, Manchester and New York, 1990, pp. 91-100.

45. P. Ruoff: NADH Substrate Inhibition in Corn-Leaf Nitrate Reductase: Evidence for a Ternary-Complex Mechanism. Biochem. Internat.1990, 21, 349.

44. C. Lillo and P. Ruoff: An Unusually Rapid Light-Induced Nitrate Reductase mRNA Pulse and Circadian Oscillations. Naturwissenschaften 1989, 76, 526.

43. P. Ruoff and J. Vestvik: Potentiometric and Spectrophoto-metric Studies of the Silver Bromide Reaction in 1 M Sulfuric Acid and their Relevance to Silver-Ion- Perturbed Bromate-Driven Oscillators. J. Phys. Chem. 1989, 93, 7798.

42. P. Ruoff and G. Nevdal: Kinetics and Mechanism of the Ce(IV) Oxidation of Methylmalonic Acid in H2SO4. J. Phys. Chem. 1989, 93, 7802.

41. P. Ruoff, C. Lillo, and W.H. Campbell: NADH Substrate Inhibition and Enhanced Thermal Stability of Higher Plant Nitrate Reductase Immobilized via a Monoclonal Antibody. Biochem. Biophys. Res. Commun. 1989, 161, 496.

40. P. Ruoff and R. M. Noyes: An Exceptionally Large Oxygen Effect in the Belousov-Zhabotinsky Reaction. J. Phys. Chem. 1989, 93, 7395.

39. E. A. Stordal and P. Ruoff: Determination of Calcium Ion in Oil Base Drilling Fluids by an Ion-Selective Electrode. Anal. Chim. Acta 1989, 219, 147.

38. L. Györgyi, M. Varga, E. Körös, R.J. Field, and P. Ruoff: Simulations of the Iodide-Ion-Perturbed Uncatalyzed Belousov-Zhabotinskii Oscillator with 1-Hydroxy-4-[(2-Methylamino)Propyl]Benzene. J. Phys. Chem. 1989, 93, 2836.

37. E. W. Hansen and P. Ruoff: Determination of Enolization Rates and Overall Stoichiometry from 1H-NMR Records of the Methylmalonic Acid Belousov- Zhabotinsky Reaction. J. Phys. Chem. 1989, 93, 2696.

36. R. M. Noyes, R.J. Field, H.-D. Försterling, E. Körös, and P. Ruoff: Controversial Interpretations of Ag+ Perturbation of the Belousov-Zhabotinsky Reaction. J. Phys. Chem. 1989, 93, 270.

35. M. Varga and P. Ruoff: Estimate of the Rate Constant of the Reaction Between HOI and 4-[2-(Methylamino)Propyl]Phenol in 1 M Sulfuric Acid. J. Phys. Chem. 1989, 93, 261.

34. E.W. Hansen and P. Ruoff: Characterization of a Manganese-Catalyzed Bromate-Driven Oscillator within the 1H-NMR Framework. J. Phys. Chem.1989, 93, 264.

33. P. Ruoff and R. M. Noyes: Phase response behaviors of different oscillatory states in the Belousov-Zhabotinsky Reaction. J. Chem. Phys.1988, 89, 2696.

32. P. Ruoff, M. Varga, and E. Körös: How Bromate Oscillators are Controlled. Acc. Chem. Res. 1988, 21, 326.

31. E. W. Hansen and P. Ruoff: Estimation of Malonic Acid and Methylmalonic Acid Enolization Rate Constants by an Isotopic Exchange Reaction Using 1H- NMR Spectroscopy. J. Phys. Chem. 1988, 92, 2641.

30. P. Ruoff: Estimation of the Silver Bromide Precipitation Rate Constant in 1 M Sulfuric Acid.Working Papers from Rogaland University, 1987, No. 71.

29. P. Ruoff, E. Körös, and E.W. Hansen: Bromine Hydrolysis Control and Two Consecutive Oscillatory Domains in Closed Cerium-Catalyzed Glyoxylic Acid Belousov-Zhabotinsky Systems. React. Kinet. Catal. Lett.1987, 34, 249.

28. P. Ruoff, M. Varga, and E. Körös: New Dynamic Behaviors in a Closed Iodide Catalyzed Bromate Oscillator. Experiments and Their Mechanistic Interpretation. J. Phys. Chem. 1987, 91, 5332.

27. P. Ruoff, M. Varga, and E. Körös: Silver Bromate Precipitation in Bromate Oscillators Treated with Excess Silver Ion. A Comment. J. Phys. Chem. 1987, 91, 4431.

26. P. Ruoff, E.W. Hansen, and R. M. Noyes: Oxidation of Glyoxylic Acid to Formic Acid in the Belousov-Zhabotinsky Reaction. A 1H-NMR Study. J. Phys. Chem. 1987, 91, 3393.

25. P. Ruoff: Bromide Ion and Iodide Ion Induced Oscillations in the Oxidized Excitable Steady State of a Catalyzed Belousov-Zhabotinsky Reaction. J. Phys. Chem. 1986, 90, 6744.

24. C.E. Sjøgren, S. Kolboe, and P. Ruoff: Transitions Between Two Oscillatory States in a Closed Malonic Acid Belousov-Zhabotinsky Reaction Simultaneously Catalyzed by Ferroin and Cerium Ions. Chem. Phys. Lett. 1986, 130, 72.

23. P. Ruoff and R. M. Noyes: Comment on "Heterogeneities and Stirring Effects in the Belousov-Zhabotinsky Reaction" by M. Menzinger and P. Jankowski. J. Phys. Chem. 1986, 90, 4700.

22. P. Ruoff and R. M. Noyes: An Amplified Oregonator Model Simulating Alternative Excitabilities, Transitions in Types of Oscillations, and Temporary Bistability in a Closed System. J. Chem. Phys. 1986, 84, 1413.

21. F. Kaland, U. Hakli, and P. Ruoff: The Use of An Ion-Selective Electrode in the Determination of Free Chloride Ions in Water-Based Drilling Fluids. SPE Drilling Engineering 1986, 365.

20. B. Schwitters and P. Ruoff: Simulation of Bromate-Driven Oscillations in the Presence of Excess Silver Ions Using the Oregonator Model. J. Phys. Chem. 1986, 90, 2497.

19. Z. Yuan, P. Ruoff, and R. M. Noyes: Gas Evolution Oscillators. 7. A Quantitative Modeling Test for the Morgan Reaction. J. Phys. Chem. 1985, 89, 5726.

18. P. Ruoff and R. M. Noyes: Temporary Bistability and Unusual Oscillatory Behavior in a Closed Belousov-Zhabotinsky Reaction System. J. Phys. Chem. 1985, 89, 1339.

17. P. Ruoff: Phase Response Relationships as an Analytical Tool in Investigating Chemical Oscillating Reactions. 1. A Crucial Test between Explodator and Oregonator-Type of Models Describing the Ag+-Perturbed Belousov-Zhabotinsky Reaction. J. Chem. Phys. 1985, 82, 2000.

16. E.W. Hansen, H.C. Gran, and P. Ruoff: Identification of Reaction Products and Stoichiometry of the Overall Process in the Methylmalonic Acid Belousov- Zhabotinsky Oscillator. A 1H-NMR Study. J. Phys. Chem. 1985, 89, 682.

15. P. Ruoff and B. Schwitters: Theoretical Study of Ag+ Induced Oscillations and Excitations in the Classical Homogeneous Belousov-Zhabotinsky Reaction Using the Oregonator Model. J. Phys. Chem. 1984, 88, 6424.

14. C. Lillo and P. Ruoff: A Minimal Oscillator Model of Light-Induced Circadian Rhythms in Leaves of Barley. Physiol. Plant. 1984, 62, 589.

13. E.W. Hansen, H.C. Gran, and P. Ruoff: No Formic Acid Production or Consumption in the Malonic Acid Belousov-Zhabotinsky Reaction. Quantitative Experimental Evidence by 1H-NMR. J. Phys. Chem. 1984, 88, 4908.

12. P. Ruoff: Oscillation-Inhibition by Bromide-Removing Reagents near the Transition to the Excitable Steady State in the Closed Stirred Belousov- Zhabotinsky Reaction. J. Phys. Chem. 1984, 88, 1058.

11. P. Ruoff: Phase Response Relationships of the Closed Bromide-Perturbed Belousov-Zhabotinsky Reaction. Evidence of Bromide Control of the Free Oscillating State Without Use of a Bromide Detecting Device. J. Phys. Chem. 1984, 88, 2851.

10. P. Ruoff: Linear Free Energy Relationships. An Information Theoretic View. Z. Phys. Chemie (Leipzig) 1984, 265, 433.

9. P. Ruoff and B. Schwitters: Oscillations, Excitability, and Stirring Effects in Closed Methylmalonic Acid Belousov-Zhabotinsky Systems. Z. Phys. Chemie (Wiesbaden) 1983, 135, 171.

8. P. Ruoff: Simulation of Amplitude Behaviour in the Ag+ Perturbed Excitable Belousov-Zhabotinsky Reaction by the Oregonator Model. Z. Naturforsch., Sect. A  1983, 38a, 974.

7. P. Ruoff: Action Potential Propagation and Facilitation-Like Phenomena in the Closed Stirred Excitable Belousov-Zhabotinsky Reaction. Naturwissenschaften1983, 70, 306.

6. P. Ruoff: Cerium-Induced Excitability and Nonperiodic Behaviour in Closed Belousov-Zhabotinsky Systems. Chem. Phys. Letters 1983, 96, 374.

5. P. Ruoff and B. Schwitters: An Oscillating Belousov-Zhabotinsky Reaction with Methylmalonic acid. Z. Phys. Chemie. (Wiesbaden) 1982, 132, 125.

4. P. Ruoff: Excitability Created by Oxygen Inhibition in the Stirred Malonic Acid Belousov-Zhabotinsky System. Chem. Phys. Letters1982, 92, 239.

3. P. Ruoff: Excitability in a Closed Stirred Belousov-Zhabotinsky System. Chem. Phys. Letters 1982, 90, 76.

2. P. Ruoff, S. Sæbø, and J. Almlöf: Gradient and MC SCF Calculations of the Conformers and the Formation of Primary Ethylene Ozonide. Chem. Phys. Letters 1981, 83, 549.

1. P. Ruoff, J. Almlöf, and S. Sæbø: Conformational Analysis of Primary Ethylene Ozonide by Gradient and Multiconfigurational SCF Calculations. Chem. Phys. Letters 1980, 72, 489.