The development of matrix compatible coatings for solid-phase microextraction (SPME) has enabled direct extraction of analytes from complex sample matrices. The direct immersion (DI) mode of SPME when ...

With justice and health in the balance, modern forensic toxicology drug testing labs are expected to detect and quantify a wide range of drugs and metabolites, from Fentanyl to novel psychoactive ...

Simple normal forms are given for symmetric, skew symmetric, and general complex matrices. These three cases can be combined into a single one, if one considers matrices with elements in a suitable ...

Nanomaterials are progressively changing our lives since they are currently used in a large variety of consumer products, technological applications and environmental remediation technologies. There ...

Department of Electrical and Computer Engineering, The University of Texas at San Antonio, San Antonio, USA. In this work, we focus on the QR-decomposition and describe three types of decompositions, ...

Abstract: A systematic theory is introduced for finding the four Hessians of complex-valued scalar functions with respect to a complex-valued matrix variable and the complex conjugate of this variable ...

Abstract: In this correspondence, the densities of quadratic forms on complex random matrices and their joint eigenvalue densities are derived for applications to information theory. These densities ...