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Related Concept Videos

Wheatstone Bridge01:29

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An ohmmeter is a resistance-measuring device. It works by applying a voltage to a resistor of unknown resistance and measuring the current across the resistor. The resistance value is deduced using Ohm's law. Usually, the standard configuration of an ohmmeter comprises a voltmeter or an ammeter. However, such configurations are limited in accuracy because the meters alter the voltage applied to the resistor and the current that flows through it.
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Design Example: Strain Gauge Bridge or Wheatstone Bridge01:15

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The utilization of strain gauges as transducers for converting mechanical strain into electrical signals is a common practice in various engineering applications. These strain gauges are frequently integrated into Wheatstone bridge circuits to accurately measure parameters such as force or pressure. Within this context, each element within the circuit exhibits a resistance that undergoes subtle variations when subjected to mechanical strain. The primary objective is to convert minuscule...
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In brick wall construction, supporting structures are crucial for openings like windows and doors to maintain the integrity and support the weight of the wall above. These supports include lintels, corbels, and arches, each serving specific structural purposes.
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Anchoring junctions are multiprotein complexes that help cells connect to other cells and the extracellular matrix. Anchoring junctions are present on the lateral and basal surfaces of cells, providing strong and flexible connections. Focal adhesions are often formed due to cell interactions with the ECM substrata, which initiate signal transduction via kinase cascades and other mechanisms. Together, they provide stability and tissue integrity. There are three types of anchoring junctions:...
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The analysis of suspension bridges is a complex and critical process that involves multiple factors, including the shape and tension of the main cables. The main cables of suspension bridges are subjected to distributed loads, which result in changes in tensile forces and deformation of the cable. These loads must be carefully considered to ensure that the bridge is safe and capable of supporting the weight of different loads.
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Bridging the Technology Divide in the COVID-19 Era: Using Virtual Outreach to Expose Middle and High School Students to Imaging Technology
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A Bridge to the World.

Zhi-Hong Xu1,2

  • 1School of Life Sciences, Peking University, Beijing 100871, China;

Annual Review of Plant Biology
|March 21, 2020
PubMed
Summary
This summary is machine-generated.

Plant physiologist Zhi-Hong Xu

Keywords:
androgenesisautobiographybiotechnologyin vitro floweringpattern formationplant developmentplant hormonesplant tissue cultureprotoplast culture

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Area of Science:

  • Plant Physiology
  • Molecular Genetics
  • Agricultural Science

Background:

  • Zhi-Hong Xu's early studies in botany at Peking University.
  • His graduate work at the Shanghai Institute of Plant Physiology (SIPP), Chinese Academy of Sciences (CAS).
  • International research experience at the John Innes Institute and Nottingham University, UK.

Observation:

  • Witnessing the "spring of science" in China post-Cultural Revolution.
  • Observing the evolution of scientific research and leadership within SIPP and CAS.
  • Noting the significant impact of major scientific projects in life sciences and agriculture.

Findings:

  • Xu's scientific contributions span plant tissue culture, hormone mechanisms, and environmental responses in plants.
  • He played a pivotal role in the design and implementation of key national scientific projects.
  • His leadership advanced plant and agricultural sciences in China.

Implications:

  • Xu's recruitment of young scientists accelerated China's scientific development.
  • His work established foundational knowledge in plant physiology and molecular genetics.
  • He significantly influenced the trajectory of agricultural science and research in China.