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Related Concept Videos

Resistors In Series01:10

Resistors In Series

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A resistor is an ohmic device that limits the flow of charge in a circuit. Most circuits have more than one resistor. If several resistors are connected together and connected to a battery, the current supplied by the battery depends on the equivalent resistance of the circuit. The equivalent resistance of a combination of resistors depends on both their individual values and how they are connected. The simplest combination of resistors is the series combination. 
In a series circuit, the...
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Series Resonance01:17

Series Resonance

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The RLC circuit impedance is defined as the ratio of the supply voltage to the circuit current. Resonance in such a circuit occurs when the imaginary part of this impedance equals zero. This specific condition means that the inductive reactance is exactly equal to the capacitive reactance. The frequency at which this happens is known as the resonant frequency. Mathematically, the resonant frequency is inversely proportional to the square root of the product of the inductance (L) and capacitance...
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Trigonometric Fourier series01:17

Trigonometric Fourier series

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Fourier series is a foundational mathematical technique that decomposes periodic functions into an infinite series of sinusoidal harmonics. This method enables the representation of complex periodic signals as sums of simple sine and cosine functions, facilitating their analysis and interpretation in various fields, including signal processing, acoustics, and electrical engineering.
The trigonometric Fourier series specifically expresses a periodic function with a defined period T using sine...
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Convergence of Fourier Series01:21

Convergence of Fourier Series

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The Fourier series is a powerful mathematical tool for representing periodic signals as an infinite sum of complex exponentials. In practice, this infinite series is truncated to a finite number of terms, yielding a partial sum. This truncation makes the approximation of the signal feasible but introduces certain challenges, particularly near discontinuities, known as the Gibbs phenomenon.
The Gibbs phenomenon refers to the persistent oscillations and overshoots that occur near discontinuities...
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Series R—L Circuit Transients01:22

Series R—L Circuit Transients

386
In a series resistor-inductor (R-L) circuit, closing the switch at the start of the time period simulates a three-phase short circuit, a fault condition where all three phases of an unloaded synchronous machine are short-circuited. When there is no fault impedance and no initial current, the initial voltage is determined by the phase angle of the source voltage.
Using Kirchhoff's Voltage Law (KVL) to analyze this circuit helps determine the total asymmetrical fault current, which consists...
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Series and Parallel Capacitors01:14

Series and Parallel Capacitors

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Capacitors, fundamental components in electronic circuits, can be connected in series and/or parallel configurations. Each configuration has different impacts on the overall behavior of the circuit.
First, consider capacitors connected in series to a battery. In this configuration, the plate connected to the battery's positive terminal develops a positive charge, while the plate attached to the negative terminal becomes negatively charged. An equal magnitude of charge is induced on the...
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An Improved Protocol to Purify and Directly Mono-Biotinylate Recombinant BDNF in a Tube for Cellular Trafficking Studies in Neurons
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Mono-/polyintoxication with 5F-ADB: A case series.

Michael Kraemer1, Helena Fels2, Torsten Dame2

  • 1University of Bonn, Institute of Forensic Medicine, Forensic Toxicology, Stiftsplatz 12, 53111 Bonn, Germany.

Forensic Science International
|May 30, 2019
PubMed
Summary
This summary is machine-generated.

Five cases of 5F-ADB consumption, a synthetic cannabinoid, are reported, including fatalities and drug-impaired driving. This highlights the severe health risks associated with emerging synthetic cannabinoids.

Keywords:
5F-ADBDUIDIntoxicationSynthetic cannabinoids

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Area of Science:

  • Forensic Toxicology
  • Pharmacology

Background:

  • Synthetic cannabinoids, such as 5F-ADB, are increasingly prevalent in legal high products.
  • Emerging synthetic cannabinoids pose challenges due to scarce data on their effects and detection.
  • Understanding the human impact of these substances is crucial for public health and forensic analysis.

Observation:

  • This report details five cases of confirmed 5F-ADB consumption.
  • Cases included fatalities, driving under the influence, and grievous bodily harm.
  • 5F-ADB was detected in blood/plasma (0.11-0.57 μg/L) in four cases and its metabolites in postmortem samples in one.

Findings:

  • Verified 5F-ADB consumption was linked to severe adverse effects.
  • Observed effects included confusion, psychosis, collapse, loss of consciousness, and mood changes.
  • The findings underscore the potent and dangerous nature of 5F-ADB.

Implications:

  • Case reports with human sample analysis are vital for interpreting routine forensic findings.
  • This data aids in understanding the clinical and forensic significance of 5F-ADB.
  • The study emphasizes the need for ongoing monitoring and research into novel synthetic cannabinoids.