Anion-Dependence of Fast Relaxation Component in Na-, K-Halide Solutions at Low Concentrations Measured by High-Resolution Microwave Dielectric Spectroscopy

2013 ◽  
Vol 117 (23) ◽  
pp. 4851-4862 ◽  
Author(s):  
George Mogami ◽  
Takashi Miyazaki ◽  
Tetsuichi Wazawa ◽  
Nobuyuki Matubayasi ◽  
Makoto Suzuki
Keyword(s):  
High Resolution ◽  
Dielectric Spectroscopy ◽  
Microwave Dielectric ◽  
Fast Relaxation ◽  
Low Concentrations ◽  
Relaxation Component

What is “hypermobile” water?: detected in alkali halide, adenosine phosphate, and F-actin solutions by high-resolution microwave dielectric spectroscopy

2014 ◽  
Vol 86 (2) ◽  
pp. 181-189 ◽  
Author(s):  
Makoto Suzuki
Keyword(s):  
High Resolution ◽  
Dielectric Spectroscopy ◽  
Alkali Halide ◽  
Direct Calculation ◽  
Water Molecules ◽  
Hydration Properties ◽  
Microwave Dielectric ◽  
Theoretical Approaches ◽  
Adenosine Phosphate ◽  
Mechanical Approach

Abstract Experimental observation by high-resolution microwave dielectric spectroscopy of hydration properties of alkali halide ions, adenosine phosphate ions, and F-actin revealed the existence of hypermobile water (HMW) molecules around those solutes. To understand the molecular process of HMW, two theoretical approaches are reviewed here. One is based on a statistical mechanical approach to analyze the rotational freedom of water molecules around a charged particle. Another approach reports direct calculation of dielectric relaxation process of water molecules around an ion. Experimentally observed HMW molecules are theoretically explained with the significance of multi-correlations among an ion and water molecules.

scholarly journals Hydration of Apomyoglobin in Native, Molten Globule, and Unfolded States by Using Microwave Dielectric Spectroscopy

2002 ◽  
Vol 82 (1) ◽  
pp. 418-425 ◽  
Author(s):  
Takashi Kamei ◽  
Motohisa Oobatake ◽  
Makoto Suzuki
Keyword(s):  
Dielectric Spectroscopy ◽  
Molten Globule ◽  
Microwave Dielectric

scholarly journals Hydration measurements of globular proteins by microwave dielectric spectroscopy and 3D structural prediction

2000 ◽  
Vol 40 (supplement) ◽  
pp. S176
Author(s):  
M. Suzuki ◽  
K. Yokoyama ◽  
T. Kamei ◽  
H. Minami
Keyword(s):  
Dielectric Spectroscopy ◽  
Globular Proteins ◽  
Structural Prediction ◽  
Microwave Dielectric

scholarly journals Microwave dielectric spectroscopy for single cell irreversible electroporation monitoring

2016 ◽  
Author(s):  
Amar Tamra ◽  
Marie Deburghgraeve ◽  
David Dubuc ◽  
Marie-Pierre Rols ◽  
Katia Grenier
Keyword(s):  
Single Cell ◽  
Dielectric Spectroscopy ◽  
Irreversible Electroporation ◽  
Microwave Dielectric

Potential of High-Resolution Mass Spectrometry for the Detection of Drugs and Metabolites in Hair: Methoxetamine in a Real Forensic Case

2020 ◽  
Author(s):  
J M Matey ◽  
Adrián López-Fernández ◽  
Carmen García-Ruiz ◽  
Gemma Montalvo ◽  
M D Moreno ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
High Resolution ◽  
Drugs Of Abuse ◽  
High Resolution Mass Spectrometry ◽  
High Resolution Mass ◽  
Low Concentrations ◽  
Forensic Case ◽  
High Resolution Technique ◽  
The One ◽  
Resolution Mass

Abstract The analysis of drugs of abuse in hair and other biological matrices of forensic interest requires great selectivity and sensitivity. This is done traditionally through target analysis, with one or more analytical methods, or with different and specific preanalytical phases, and complex procedures performed by the toxicological laboratories, and there is no exception with ketamine-like compounds, such as methoxetamine, a new psychoactive substance whose use has increased in the last decades, and continues to grow quickly year by year. More validated methods of analysis are needed to detect these substances in low concentrations selectively. Reanalyzing the samples of a former case of a polydrug consumer accused of a crime against public health in Spain, five metabolites of methoxetamine (normethoxetamine, O-desmethylmethoxetamine, dehydromethoxetamine, dihydronormethoxetamine and hydroxynormethoxetamine) were tentatively detected using a high-resolution technique, i.e., liquid chromatography coupled to high-resolution mass spectrometry (LC–HR-MS-MS). The highest analytical selectivity of LC–HR-MS-MS method together a universal and simpler pretreatment stages has demonstrated to allow faster analysis and more sensitivity than the one performed traditionally at the INTCF laboratories, which was gas chromatography coupled to mass spectrometry.

scholarly journals Microwave dielectric spectroscopy for biological cells suspensions analysis and proliferation evaluation

2014 ◽  
Author(s):  
Francois Artis ◽  
David Dubuc ◽  
Jean-Jacques Fournie ◽  
Mary Poupot ◽  
Katia Grenier
Keyword(s):  
Dielectric Spectroscopy ◽  
Biological Cells ◽  
Microwave Dielectric
Sign in / Sign up

Export Citation Format

Share Document