A5024008553- Mental Health Research Topics
- Time Series Analysis and Forecasting
- Cardiac Ischemia and Reperfusion
- Complex Systems and Time Series Analysis
- Mechanical Circulatory Support Devices
- Transplantation: Methods and Outcomes
- Analytical chemistry methods development
- Metabolomics and Mass Spectrometry Studies
- Pharmaceutical and Antibiotic Environmental Impacts
- Metal complexes synthesis and properties
- Cardiac Imaging and Diagnostics
- Functional Brain Connectivity Studies
- Various Chemistry Research Topics
- Inorganic and Organometallic Chemistry
- Biochemical Analysis and Sensing Techniques
- Advanced MRI Techniques and Applications
- Ultrasound and Hyperthermia Applications
- Agriculture Sustainability and Environmental Impact
- Advanced Neuroimaging Techniques and Applications
- Oxidative Organic Chemistry Reactions
- Proteins in Food Systems
- Phytase and its Applications
- Chemical Reaction Mechanisms
- Spectroscopy and Chemometric Analyses
- Food composition and properties
Women and Children’s Health Research Institute
2024-2025
University of Alberta
2018-2023
University of Wisconsin–Stout
1990-2006
United States Geological Survey
1990
Abstract Functional magnetic resonance imaging (fMRI) time series data presents a unique opportunity to understand the behavior of temporal brain connectivity, and models that uncover complex dynamic workings this organ are keen interest in neuroscience. We motivated develop accurate change point detection network estimation techniques for high-dimensional whole-brain fMRI data. To end, we introduce factorized binary search (FaBiSearch), novel method structure multivariate order large-scale...
Background: Ex situ heart perfusion (ESHP) preserves the donated in a perfused, beating condition preventing cold storage–related ischemia and provides platform to evaluate myocardial viability during preservation. However, function declines gradually ESHP. Extracorporeal circulation systems are associated with induction of systemic inflammatory stress responses. Our aim was incidence inflammation endoplasmic reticulum responses an extended period Methods: Cardiac function, tissue injury,...
The most widely used inputs in classification models of brain disorders such as early mild cognitive impairment (eMCI) or Alzheimer's disease are estimates static-based functional connectivity (SFC) and sliding window dynamic (swDFC). Although these methods convenient for estimation computational purposes, it keeps the tractable, they present a simplified version highly integrated phenomenon. Change point (cpDFC) methods, which far less commonly used, offer an alternative to swDFC...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOxidation of hexaaquoiron(II) by chlorine(III) in aqueous solutionMartin G. Ondrus and Gilbert GordonCite this: Inorg. Chem. 1972, 11, 5, 985–989Publication Date (Print):May 1, 1972Publication History Published online1 May 2002Published inissue 1 1972https://pubs.acs.org/doi/10.1021/ic50111a014https://doi.org/10.1021/ic50111a014research-articleACS PublicationsRequest reuse permissionsArticle Views84Altmetric-Citations26LEARN ABOUT THESE...
The current standard method for organ preservation (cold storage, CS), exposes the heart to a period of cold ischemia that limits safe time and increases risk adverse post-transplantation outcomes. Moreover, static nature CS does not allow evaluation or intervention during interval. Normothermic ex situ perfusion (ESHP) is novel donated minimizes by providing oxygenated, nutrient-rich perfusate heart. ESHP has been shown be non-inferior in standard-criteria donor hearts also facilitated...
Polynuclear azaheterocyclic compounds (azaarenes) are nitrogen-containing analogs of polycyclic aromatic hydrocarbons (PAHs). The nitrogen atom in t he ring system causes these to be slightly polar and considerably more water soluble than related PAHs. A method using a solid-surface sorption technique extract concentrate azaarenes their principle metabolites present groundwater that contains creosote waste is described. Analyte isolation concentration accomplished by solid-phase extraction...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDetermination of selected azaarenes in water by bonded-phase extraction and liquid chromatographyThomas R. Steinheimer Martin G. OndrusCite this: Anal. Chem. 1986, 58, 8, 1839–1844Publication Date (Print):July 1, 1986Publication History Published online1 May 2002Published inissue 1 July 1986https://pubs.acs.org/doi/10.1021/ac00121a052https://doi.org/10.1021/ac00121a052research-articleACS PublicationsRequest reuse permissionsArticle...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReaction of tris(1,10-phenanthroline)iron(II)ion with chlorine(I) speciesGilbert Gordon and Martin G. OndrusCite this: Inorg. Chem. 1971, 10, 3, 474–477Publication Date (Print):March 1, 1971Publication History Published online1 May 2002Published inissue 1 March 1971https://pubs.acs.org/doi/10.1021/ic50097a007https://doi.org/10.1021/ic50097a007research-articleACS PublicationsRequest reuse permissionsArticle Views347Altmetric-Citations13LEARN ABOUT...
The current standard method for organ preservation (cold storage, CS), exposes the heart to a period of cold ischemia that limits safe time and increases risk adverse post-transplantation outcomes. Moreover, static nature CS does not allow evaluation or intervention during interval. Normothermic ex situ perfusion (ESHP) is novel donated minimizes by providing oxygenated, nutrient-rich perfusate heart. ESHP has been shown be non-inferior in standard-criteria donor hearts also facilitated...
Functional magnetic resonance imaging (fMRI) time series data presents a unique opportunity to understand the behavior of temporal brain connectivity, and models that uncover complex dynamic workings this organ are keen interest in neuroscience. We motivated develop accurate change point detection network estimation techniques for high-dimensional whole-brain fMRI data. To end, we introduce factorized binary search (FaBiSearch), novel method structure multivariate order large-scale...
In this work, we introduce the R package fabisearch, available on Comprehensive Archive Network (CRAN), which implements an original change point detection method for multivariate high-dimensional time series data and a new interactive, 3-dimensional, brain-specific network visualization capability in flexible, stand-alone function. Change is commonly used technique analysis, capturing dynamic nature many real-world processes With ever increasing troves of data, especially neuroimaging...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe determination of NOx and particulates in cigaret smoke: A student laboratory experimentMartin G. Ondrus Cite this: J. Chem. Educ. 1979, 56, 8, 551Publication Date (Print):August 1, 1979Publication History Received3 August 2009Published online1 1979Published inissue 1 1979https://pubs.acs.org/doi/10.1021/ed056p551https://doi.org/10.1021/ed056p551research-articleACS PublicationsRequest reuse permissionsArticle Views281Altmetric-Citations3LEARN...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSugar determination in foods with a radially compressed high performance liquid chromatography columnMartin G. Ondrus , Jane Wenzel and Gerald L. Zimmerman Cite this: J. Chem. Educ. 1983, 60, 9, 776Publication Date (Print):September 1, 1983Publication History Received3 August 2009Published online1 September 1983Published inissue 1 1983https://doi.org/10.1021/ed060p776RIGHTS & PERMISSIONSArticle Views218Altmetric-Citations3LEARN ABOUT THESE...
ADVERTISEMENT RETURN TO ISSUEPREVDemoNEXTReverse-phase separation of FD and C dyes using a solvent gradientMartin G. Ondrus Cite this: J. Chem. Educ. 1985, 62, 9, 798Publication Date (Print):September 1, 1985Publication History Received3 August 2009Published online1 September 1985Published inissue 1 1985https://doi.org/10.1021/ed062p798.2Request reuse permissionsArticle Views172Altmetric-Citations3LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum full text article...
Abstract We investigated the adsorption characteristics of hydroxyatrazine (HA) and introduced a relatively simple method to analyze extract compound from wetland sediment. Although concentration HA could be easily measured using an amino‐phase HPLC column, one should cautious not use solvent programs that interfere with atrazine (A). The characteristic on sediment was roughly linear distribution coefficient 0.057 L/g. About 90% adsorbed recovered our heated extraction method.
In this work, we introduce the R package fabisearch, available on Comprehensive Archive Network (CRAN), which implements an original change point detection method for multivariate highdimensional time series data and a new interactive, 3-dimensional, brain-specific network visualization capability in flexible, stand-alone function. Change is commonly used technique analysis, capturing dynamic nature many real-world processes With ever increasing troves of high-dimensional data, especially...
Introduction Heart transplantation remains the standard treatment for advanced heart failure. However, waiting lists donor continue to rise all over world due discrepancy between demand and supply of suitable organs. Ex‐vivo perfusion (EVHP) has been proposed as a means improving preservation expanding pool. The clinically available EVHP performs in non‐working mode (NWM). Alternatively, working (WM) may be better terms function assessment preservation. Objectives generation circulating...