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Related Concept Videos

Psychodynamic Perspectives on Personality01:27

Psychodynamic Perspectives on Personality

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The psychodynamic perspective in psychology asserts that most personality functions operate unconsciously, outside of awareness. This means that the motives and emotions driving behavior often remain hidden, automatically buried in the unconscious mind as a defense mechanism to shield us from psychological distress. According to this theory, the unconscious mind contains thoughts, memories, and emotions that are too disturbing to face directly.
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Social Cognitive Perspective on Personality01:30

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Social cognitive perspectives on personality emphasize the importance of conscious awareness, beliefs, expectations, and goals in shaping behavior. These perspectives incorporate behaviorist principles, such as learning through reinforcement and conditioning, but extend beyond them by highlighting human reasoning and planning. Unlike traditional behaviorist views, social cognitive theory focuses on how individuals reflect on their past experiences and plan for future outcomes by considering...
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Criticisms of the Evolutionary Perspective01:23

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In a study where individuals posing as strangers offered compliments and proposed casual sex to students, the responses differed significantly based on gender. Not a single woman accepted the proposal, while 70% of the men agreed. This outcome provides a useful scenario to explore through the lens of evolutionary psychology and social learning theory, highlighting the diverse perspectives on human sexual behaviors.
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The Behavioral Perspective on Personality01:19

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Behaviorists view personality as primarily shaped by environmental reinforcements and consequences. According to this perspective, behavior is influenced by external stimuli, and individuals adjust their actions based on rewards and punishments. Over time, learning histories — accumulated patterns of reinforcement — play a significant role in shaping personality. Behaviors that lead to positive outcomes are reinforced, while those resulting in negative outcomes are diminished.
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Marcia's Theory of Identity Status01:26

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James Marcia's identity status model provides a framework for understanding how adolescents navigate identity formation through varying degrees of exploration and commitment. Marcia's model builds on Erik Erikson's theories of psychosocial development, focusing specifically on how adolescents reconcile individual aspirations with societal expectations. His model describes identity formation as a dynamic process where adolescents move between different states depending on their level...
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The first thing a clinician sees is the skin, so the examination of the skin should be part of any thorough physical examination. Most skin disorders are relatively benign, but a few, including melanomas, can be fatal if untreated. A couple of the more noticeable disorders, albinism and vitiligo, affect the appearance of the skin and its accessory organs.
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A High Throughput Screen for Biomining Cellulase Activity from Metagenomic Libraries
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Thermostable cellulases: Current status and perspectives.

Anil K Patel1, Reeta Rani Singhania2, Sang Jun Sim1

  • 1Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Republic of Korea.

Bioresource Technology
|January 28, 2019
PubMed
Summary
This summary is machine-generated.

Thermostable cellulases are key for efficient biofuel production from lignocellulosic biomass. Enhancing enzyme stability reduces costs and improves the sustainability of ethanol fuel.

Keywords:
BioethanolCellulasesLignocellulose biomassThermophilesThermostability

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Area of Science:

  • Biotechnology and Bioengineering
  • Enzyme Engineering
  • Renewable Energy

Background:

  • Cellulases are crucial industrial enzymes for lignocellulosic biomass conversion to ethanol.
  • Low thermostability and production titers of cellulases increase enzyme costs, hindering biofuel applications.
  • Developing thermostable cellulases is essential for efficient and cost-effective biomass hydrolysis.

Purpose of the Study:

  • This review focuses on thermostable cellulases for biofuel production.
  • It examines sources, mechanisms, regulation, and strategies to enhance cellulase thermostability.
  • The goal is to highlight their importance in advancing cellulose hydrolysis for sustainable energy.

Main Methods:

  • Literature review of research on cellulase sources and engineering.
  • Analysis of mechanisms and regulatory aspects of cellulase function.
  • Exploration of strategies for improving enzyme thermostability.

Main Results:

  • Identification of various sources of thermostable cellulases.
  • Understanding of factors influencing cellulase stability and activity.
  • Overview of successful strategies for enhancing enzyme thermostability.

Conclusions:

  • Thermostable cellulases are vital for the economic viability of lignocellulosic ethanol production.
  • Continued research into enzyme engineering will improve biofuel sustainability.
  • Optimized cellulose hydrolysis using robust enzymes offers a pathway to reduce reliance on fossil fuels.