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Photoluminescence: Applications01:14

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Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
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The average temperature of Earth is the subject of much current discussion. Earth is in radiative contact with both the Sun and dark space; it receives almost all its energy from the radiation of the Sun and reflects some of it into outer space. Dark space is very cold, about 3 K, so Earth radiates energy into it. For instance, heat transfer occurs from soil and grasses, the rate of which can be so rapid that frost can occur on clear summer evenings, even in warm latitudes.
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Applications of Logarithms01:28

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Logarithmic functions are powerful tools for simplifying the mathematical representation of phenomena involving exponential changes. Their ability to convert multiplicative relationships into additive ones is especially valuable in various scientific and engineering contexts. One notable application of logarithms is measuring sound intensity, specifically through the decibel (dB) scale used in acoustics.Sound intensity levels vary over an extensive range, from the faintest audible whisper to...
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Consider a structure made of a boom and a rod designed to support a load. These two components are connected by a pin and stabilized by brackets and pins. The boom and the rod are detached from their supports to assess the different stresses imposed on this structure, and a free-body diagram is drawn. Then, all the forces applied, including the load acting on the structure, are identified. The reaction forces exerted on both the boom and the rod are computed using the equilibrium equations.
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A relaxation oscillator is one of the applications of RC circuits. A neon lamp relaxation oscillator comprises a capacitor, a resistor, a voltage source, and a lamp. The lamp acts like an open circuit, with infinite resistance until the potential difference across the lamp reaches a specific voltage. At that voltage, the lamp acts like a short circuit with zero resistance, and the capacitor discharges through the lamp, thus producing light. Once the capacitor is fully discharged through the...
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Updated: Feb 4, 2026

Application of Retinoic Acid to Obtain Osteocytes Cultures from Primary Mouse Osteoblasts
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Osteocyte Characterization on Polydimethylsiloxane Substrates for Microsystems Applications.

Spencer L York1, Ahmad R Arida1, Karan S Shah1

  • 1Department of Biomedical Engineering, The University of Akron, 260 S Forge St, Akron, OH 44325, USA.

Journal of Biomimetics, Biomaterials, and Tissue Engineering
|September 25, 2018
PubMed
Summary
This summary is machine-generated.

Osteocytes, bone cells sensing mechanical loads, function normally on polydimethylsiloxane (PDMS) substrates. This finding supports using PDMS in micro-engineered systems for bone mechanotransduction research.

Keywords:
OsteocytesPDMSgap junctionssclerostin

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Area of Science:

  • Biomaterials Science
  • Cell Biology
  • Biotechnology

Background:

  • Osteocytes, embedded within bone, are crucial for sensing mechanical stimuli.
  • Current models for studying bone mechanotransduction have limitations in temporal and spatial resolution.
  • Polydimethylsiloxane (PDMS) microfabrication offers potential solutions for advanced bone cell studies.

Purpose of the Study:

  • To characterize osteocyte behavior on PDMS substrates coated with collagen type I (CTI).
  • To establish a framework for future bone cell mechanotransduction studies using microsystems.
  • To determine if PDMS adversely affects osteocyte behavior compared to glass substrates.

Main Methods:

  • Osteocyte behavior was assessed on PDMS and glass substrates.
  • PDMS substrates were coated with collagen type I (CTI).
  • Optimal culture conditions and time points for osteocyte growth on PDMS were determined.

Main Results:

  • Osteocyte behavior was not adversely affected by PDMS substrates.
  • Osteocytes cultured on PDMS maintained their phenotypic characteristics.
  • A minimum culture time of 72 hours is recommended for osteocyte experiments on PDMS.

Conclusions:

  • PDMS is a suitable substrate material for studying osteocyte mechanotransduction.
  • Established culture protocols are essential for reliable results in microsystem-based bone research.
  • This study provides foundational data for utilizing PDMS in advanced osteocyte microsystem models.