Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Environmental Applications of Microorganisms01:30

Environmental Applications of Microorganisms

1.2K
Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...
1.2K
Environmental Influences on Intelligence01:29

Environmental Influences on Intelligence

977
Despite the strong genetic influence on traits like intelligence, environmental factors significantly shape outcomes. For example, while over 90% of height variation is due to genetic differences, environmental factors such as nutrition also have a notable impact. Similarly, for intelligence, changes in a child's surroundings can significantly alter their IQ. Research shows that enriched environments boost children's academic success and help them develop key cognitive skills. Children...
977
Causes of Social Behavior III: Biological and Environmental Influences01:28

Causes of Social Behavior III: Biological and Environmental Influences

333
Social behavior is a complex phenomenon that arises from the interaction between biological predispositions and environmental influences. This intricate interplay shapes how individuals think, feel, and act in various social contexts. Understanding these mechanisms requires insights from psychology, neuroscience, genetics, and evolutionary theory.Environmental Influences on Social BehaviorEnvironmental factors, including temperature, odors, and visual stimuli, play a crucial role in shaping...
333
Harmonic Mean01:09

Harmonic Mean

3.8K
The arithmetic mean is usually skewed towards the larger values in the data set. Therefore, to avoid this inherent bias towards smaller values, the harmonic mean is used.
Take the example of the speed of a car, which is the measure of the rate of distance traveled. If the vehicle traverses the same distance back-and-forth, its average speed equals the total distance traveled divided by the total time taken. However, if the car moves with varying speeds, then the arithmetic mean is more skewed...
3.8K
Frustration and Conflict: Avoidance-Avoidance, Double-Approach Avoidance01:14

Frustration and Conflict: Avoidance-Avoidance, Double-Approach Avoidance

698
Avoidance-avoidance conflict refers to a psychological situation where a person must choose between two or more unpleasant alternatives. These conflicts are particularly stressful because neither option is desirable. This dilemma is often expressed in sayings like "caught between a rock and a hard place" or "between the devil and the deep blue sea." For instance, individuals who fear dental procedures may find themselves torn between enduring a painful toothache or facing the...
698
Crossing Over01:34

Crossing Over

172.4K
Unlike mitosis, meiosis aims for genetic diversity in its creation of haploid gametes. Dividing germ cells first begin this process in prophase I, where each chromosome—replicated in S phase—is now composed of two sister chromatids (identical copies) joined centrally.
The homologous pairs of sister chromosomes—one from the maternal and one from the paternal genome—then begin to align alongside each other lengthwise, matching corresponding DNA positions in a process...
172.4K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Increases in Condomless Sex in the Swiss HIV Cohort Study.

Open forum infectious diseases·2015
Same author

People with type 2 diabetes on premixed insulin therapy: how is the daily insulin dose partitioned and are there effects on the metabolic control?

Experimental and clinical endocrinology & diabetes : official journal, German Society of Endocrinology [and] German Diabetes Association·2015
Same author

Incident Hepatitis C Virus Infections in the Swiss HIV Cohort Study: Changes in Treatment Uptake and Outcomes Between 1991 and 2013.

Open forum infectious diseases·2015
Same author

Complete evaluation of adrenal tumours in a tertiary care institution in Thuringia, Germany.

Experimental and clinical endocrinology & diabetes : official journal, German Society of Endocrinology [and] German Diabetes Association·2015
Same author

Healthcare utilization of people with type 2 diabetes in Germany: an analysis based on health insurance data.

Diabetic medicine : a journal of the British Diabetic Association·2015
Same author

Obesity Trends and Body Mass Index Changes After Starting Antiretroviral Treatment: The Swiss HIV Cohort Study.

Open forum infectious diseases·2015

Related Experiment Video

Updated: Feb 15, 2026

Environmental Modulations of the Number of Midbrain Dopamine Neurons in Adult Mice
09:35

Environmental Modulations of the Number of Midbrain Dopamine Neurons in Adult Mice

Published on: January 20, 2015

9.3K

Environmental rocking ratchet: Environmental rectification by a harmonically driven avoided crossing.

P Nalbach1, N Klinkenberg1, T Palm1,2

  • 1Fachbereich Wirtschaft & Informationstechnik, Westfälische Hochschule, Münsterstrasse 265, 46397 Bocholt, Germany.

Physical Review. E
|January 20, 2018
PubMed
Summary

We developed a quantum rocking ratchet that uses thermal fluctuations to break symmetry, enabling directed particle transport. This quantum system achieves directed motion by dynamically creating asymmetry through its environment.

More Related Videos

Author Spotlight: Assessing the Olfactory Effects of Airborne Pollutants — Buried Food and Social Odor Tests
04:00

Author Spotlight: Assessing the Olfactory Effects of Airborne Pollutants — Buried Food and Social Odor Tests

Published on: September 13, 2024

1.4K
Author Spotlight: Characterizing Environmental Biofilm Mechanics Using Optical Coherence Elastography and its Applications in Wastewater Treatment
04:51

Author Spotlight: Characterizing Environmental Biofilm Mechanics Using Optical Coherence Elastography and its Applications in Wastewater Treatment

Published on: March 1, 2024

1.5K

Related Experiment Videos

Last Updated: Feb 15, 2026

Environmental Modulations of the Number of Midbrain Dopamine Neurons in Adult Mice
09:35

Environmental Modulations of the Number of Midbrain Dopamine Neurons in Adult Mice

Published on: January 20, 2015

9.3K
Author Spotlight: Assessing the Olfactory Effects of Airborne Pollutants — Buried Food and Social Odor Tests
04:00

Author Spotlight: Assessing the Olfactory Effects of Airborne Pollutants — Buried Food and Social Odor Tests

Published on: September 13, 2024

1.4K
Author Spotlight: Characterizing Environmental Biofilm Mechanics Using Optical Coherence Elastography and its Applications in Wastewater Treatment
04:51

Author Spotlight: Characterizing Environmental Biofilm Mechanics Using Optical Coherence Elastography and its Applications in Wastewater Treatment

Published on: March 1, 2024

1.5K

Area of Science:

  • Quantum mechanics
  • Statistical physics
  • Condensed matter physics

Background:

  • Quantum systems often require broken symmetry for directed transport.
  • Thermal fluctuations can introduce asymmetry in quantum systems.
  • Periodic driving is a common method to manipulate quantum states.

Purpose of the Study:

  • To design a quantum rocking ratchet capable of directed particle transport.
  • To investigate the dynamic breaking of symmetry in a quantum two-state system.
  • To explore the role of thermal environments in quantum transport.

Main Methods:

  • Modeling a symmetric quantum two-state system subjected to periodic harmonic driving.
  • Introducing a thermal environment coupled to energy differences and tunnel coupling.
  • Analyzing the driven dissipative quantum dynamics.

Main Results:

  • Demonstrated dynamic symmetry breaking via a tailored thermal environment.
  • Achieved a finite population difference between quantum states on average.
  • Showed that this population difference leads to directed particle transport.

Conclusions:

  • A quantum rocking ratchet can be realized using a driven two-state system and a specific thermal environment.
  • Dynamic symmetry breaking is a viable mechanism for achieving directed quantum transport.
  • The proposed system offers a novel approach to controlling particle motion at the quantum level.