in this study, a rapid, simple and sensitive ion mobility spectrometry (ims) method with corona discharge as ionization source was described for the morphine determination in human urine. morphine was extracted and purified from urine samples using solid phase extraction procedure with c18 column. it can offer the clean extracts which no extra peaks were observed in ims. under operating experim...

A linearly tunable low-voltage CMOS transconductor featuring a new adaptative-bias mechanism that considerably improves the stability of the processed-signal common-mode voltage over the tuning range, critical for very-low voltage applications, is introduced. It embeds a feedback loop that holds input devices on triode region while boosting the output resistance. Analysis of the integrator freq...

Three-phase power systems under sinusoidal steady-state condition are commonly analyzed by means of the wellknown symmetrical component transformation. The main assumption underlying such a transformation is symmetry of the phases of a power system. In modern power systems, however, phase symmetry cannot be guaranteed for several reasons, e.g., large single-phase loads including high-speed rail...

INTRODUCTION The size of extracellular vesicles (EVs) can be determined with a tunable resistive pulse sensor (TRPS). Because the sensing pore diameter varies from pore to pore, the minimum detectable diameter also varies. The aim of this study is to determine and improve the reproducibility of TRPS measurements. METHODS Experiments were performed with the qNano system (Izon) using beads and ...

Voltage stability analysis based on the number of limit violating buses apart from considering the voltage magnitude violations using several severity functions is performed in this work. Deviating from existing works in literature, the double line contingency is considered based on the three types of severity functions: discrete, continuous and percentage of violation severity functions. The s...

In this implementation consists two single-phase to three-phase conversion systems for a three-phase load application. The load is connected to a single-phase grid through an ac–dc–ac single-phase to three-phase converter. The single-phase rectifier is composed of two parallel single-phase half-bridge rectifiers. The main objective of this design is based on number of switching devices is reduc...

The two general data analytic questions of subgroup mining (B2.2) deal with deviations and associations (C5.2.3, C5.2.4). A deviation pattern describes a deviating behavior (distribution) of a target variable in a subgroup. Target variable and behavior type are selected by the analyst for an individual mining task, the deviating subgroups are determined by the mining method. Deviation patterns ...

The growing interest in distributed generation (DG) in recent years has led to a number of generators connected to a distribution system. The integration of DGs in a distribution system has resulted in a network known as active distribution network due to the existence of bidirectional power flow in the system. Voltage rise issue is one of the predominantly important technical issues to be addr...