Related Experiment Video

Updated: Feb 1, 2026

Synthesis of Indoxyl-glycosides for Detection of Glycosidase Activities
09:10

Synthesis of Indoxyl-glycosides for Detection of Glycosidase Activities

Published on: May 27, 2015

7.1K

Insecticidal Pregnane Glycosides from the Root Barks of Periploca sepium

Renfeng Li, Ximei Zhao, Baojun Shi

    Natural Product Communications
    |December 15, 2018
    PubMed

    More Related Videos

    Bioassays for Monitoring Insecticide Resistance06:30

    Bioassays for Monitoring Insecticide Resistance

    Published on: December 30, 2010

    34.0K
    A Workflow for the Quantitative Assessment of the Endophytic and Epiphytic Bacterial Microbiomes of the Bark of Populus trichocarpa12:05

    A Workflow for the Quantitative Assessment of the Endophytic and Epiphytic Bacterial Microbiomes of the Bark of Populus trichocarpa

    Published on: June 27, 2025

    1.2K

    Related Concept Videos

    Primary and Secondary Growth in Roots and Shoots03:02

    Primary and Secondary Growth in Roots and Shoots

    Vascular plants, which account for over 90% of the Earth’s vegetation, all undergo primary growth—which lengthens roots and shoots. Many land plants, notably woody plants, also undergo secondary growth—which thickens roots and shoots.
    60.5K
    Root Mean Square00:57

    Root Mean Square

    If in an experiment, data values have a probability of being both positive and negative, neither the arithmetic mean, the geometric mean, nor the harmonic mean can be used to calculate the central tendency of the data set. In particular, if the positive and negative values are equally likely, the arithmetic mean is close to zero.
    For example, consider the velocity of gas molecules in a container. The gas molecules are moving in different directions, which might impart positive and negative...
    3.8K
    Properties of the Root Locus01:05

    Properties of the Root Locus

    The root locus method is an invaluable tool for analyzing higher-order systems without needing to factor the denominator of the transfer function. A pole of the system is identified when the characteristic polynomial in the transfer function's denominator equals zero.
    To determine if a point lies on the root locus, the criterion involves the sum of angles contributed by all poles and zeros to that point. Specifically, this sum must be an odd multiple of 180 degrees. The gain at any point on...
    307
    Root-Locus Method01:19

    Root-Locus Method

    A cruise control system in a car is designed to maintain a specified speed automatically by adjusting the gas pedal. The system continuously measures the vehicle's speed and makes fine adjustments to the pedal to achieve this goal. The root locus method is particularly useful for understanding how the cruise control system's behavior changes under varying conditions, such as when the car goes uphill, downhill, or faces strong wind resistance.
    This system can be represented by a block...
    513
    Construction of Root Locus01:15

    Construction of Root Locus

    The construction of a root locus involves several key steps to analyze and visualize the behavior of a system's poles with varying gain. The number of branches in the root locus equals the number of closed-loop poles and is symmetrical about the real axis.
    For positive gain values, the root locus exists on the real axis to the left of an odd number of finite open-loop poles or zeros. The root locus starts at the open-loop poles and traces the paths of the closed-loop poles as the gain...
    417
    Plotting and Calibrating the Root Locus01:19

    Plotting and Calibrating the Root Locus

    Root loci often diverge as system poles shift from the real axis to the complex plane. Key points in this transition are the breakaway and break-in points, indicating where the root locus leaves and reenters the real axis. The branches of the root locus form an angle of 180/n degrees with the real axis, where n is the number of branches at a breakaway or break-in point.
    The maximum gain occurs at the breakaway points between open-loop poles on the real axis, while the minimum gain is...
    470