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The hypothetical Carnot cycle consists of an ideal gas subjected to two isothermal and two adiabatic processes. Since the internal energy of an ideal gas depends only on its temperature, which is the same before and after the completion of the Carnot cycle, there is no change in its internal energy. Hence, using the first law of thermodynamics, the total heat exchanged by the ideal gas equals the total work done. Thus, we can quantify the efficiency of the Carnot cycle via the heat exchanged...
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Real-time reverse transcription-polymerase chain reaction, or Real-time RT-PCR, is an analytical tool used to determine the expression level of target genes. The method involves converting mRNA to complementary DNA with the help of an enzyme known as reverse transcriptase, followed by the PCR amplification of the cDNA. These two processes can be performed simultaneously in a single tube or separately as a two-step reaction.
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Related Experiment Video

Updated: Apr 3, 2026

Rapid PCR Thermocycling using Microscale Thermal Convection
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Published on: March 5, 2011

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Performance evaluation of cost-optimized thermal cycler.

Chan-Young Park1,2, Young-Hyun Park1,2, Yu-Seop Kim1,2

  • 1Department of Convergence Software, Hallym University, Korea.

Technology and Health Care : Official Journal of the European Society for Engineering and Medicine
|September 28, 2015
PubMed
Summary
This summary is machine-generated.

This study presents a low-cost personal polymerase chain reaction (PCR) thermal cycler. By integrating biochemical processes locally and PC-based management, it reduces development time and costs for genetic analysis.

Keywords:
PCR protocol managementPCR thermal cyclergraphical user interfacelocal-host architecture

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Polymerase Chain Reaction: Basic Protocol Plus Troubleshooting and Optimization Strategies
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Area of Science:

  • Biotechnology
  • Molecular Biology
  • Biochemistry

Background:

  • Polymerase chain reaction (PCR) is a fundamental technique in genetic manipulation experiments.
  • Current PCR methods require specialized equipment, potentially limiting accessibility and increasing costs.
  • Developing user-friendly and cost-effective solutions is crucial for broader adoption of genetic analysis tools.

Purpose of the Study:

  • To develop a low-cost polymerase chain reaction (PCR) thermal cycler for personal use.
  • To reduce product development time and maintenance/repair costs associated with PCR instrumentation.
  • To enhance accessibility of genetic analysis through affordable and user-friendly technology.

Main Methods:

  • Implementation of biochemical process functions within a local embedded system.
  • Development of PC-based data management for PCR protocols.
  • Integration of user-interface management on a personal computer (PC) with a Windows operating system.

Main Results:

  • Successful low-cost implementation of a functional PCR thermal cycler.
  • Demonstrated reduction in development time and potential for lower maintenance costs.
  • Enabled PC-based control and data management for enhanced user accessibility.

Conclusions:

  • The developed system offers a cost-effective solution for personal PCR thermal cycling.
  • Integrating embedded systems with PC interfaces streamlines genetic analysis workflows.
  • This approach facilitates wider access to PCR technology for research and personal applications.