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Related Concept Videos

Active Transport01:14

Active Transport

Active transport is a critical biological process that allows cells to move solutes against an electrochemical gradient. This process requires direct energy input and is characterized by its selectivity, saturability, and susceptibility to competitive inhibition.
Primary active transporters, like Na+, K+ and -ATPase, directly utilize ATP to move ions across the membrane. These transporters play significant roles in various physiological processes. For instance, Na+, K+ and -ATPase maintain...
Fluid Movement Between Compartments01:18

Fluid Movement Between Compartments

The force applied by fluids against a surface, known as hydrostatic pressure, initiates the transfer of fluid among different compartments. Within our blood vessels, the blood's hydrostatic pressure is a result of the heart's pumping action. At the arteriolar end of capillaries, hydrostatic pressure (capillary blood pressure) exceeds the opposing colloid osmotic pressure created primarily by plasma proteins like albumin. This discrepancy in pressure propels plasma and nutrients from the...
Mechanisms of Heat Transfer II01:20

Mechanisms of Heat Transfer II

In convection, thermal energy is carried by the large-scale flow of matter. Ocean currents and large-scale atmospheric circulation, which result from the buoyancy of warm air and water, transfer hot air from the tropics toward the poles and cold air from the poles toward the tropics. The Earth’s rotation interacts with those flows, causing the observed eastward flow of air in the temperate zones. Convection dominates heat transfer by air, and the amount of available space for the airflow...
Mechanisms of Heat Transfer I01:14

Mechanisms of Heat Transfer I

Just as interesting as the effects of heat transfer on a system are the methods by which the heat transfer occur. Whenever there is a temperature difference, heat transfer occurs. It may occur rapidly, such as through a cooking pan, or slowly, such as through the walls of a picnic ice box. So many processes involve heat transfer that it is hard to imagine a situation where no heat transfer occurs. Yet, every heat transfer takes place by only three methods: conduction, convection, and radiation.
Primary Active Transport01:29

Primary Active Transport

In contrast to passive transport, active transport involves a substance being moved through membranes in a direction against its concentration or electrochemical gradient. There are two types of active transport: primary active transport and secondary active transport. Primary active transport utilizes chemical energy from ATP to drive protein pumps embedded in the cell membrane. With energy from ATP, the pumps transport ions against their electrochemical gradients—a direction they would not...
Primary Active Transport01:47

Primary Active Transport

In contrast to passive transport, active transport involves a substance being moved through membranes in a direction against its concentration or electrochemical gradient. There are two types of active transport: primary active transport and secondary active transport. Primary active transport utilizes chemical energy from ATP to drive protein pumps that are embedded in the cell membrane. With energy from ATP, the pumps transport ions against their electrochemical gradients—a direction they...

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Comparative Study of Simulation of Temperature Rise in Ring Main Unit
04:35

Comparative Study of Simulation of Temperature Rise in Ring Main Unit

Published on: July 5, 2024

Active transport and heat.

Peter W Tait

    Asia-Pacific Journal of Public Health
    |July 20, 2011
    PubMed
    Summary
    This summary is machine-generated.

    Rising global temperatures can reduce outdoor physical activity and limit active transportation. Strategies for climate change mitigation and adaptation must intentionally incorporate co-benefits for human health and mobility.

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    Area of Science:

    • Environmental Science
    • Public Health
    • Climate Change Research

    Background:

    • Global warming is increasing ambient temperatures worldwide.
    • Elevated temperatures pose risks to human health and well-being.
    • Outdoor physical activity and active transport are crucial for public health.

    Purpose of the Study:

    • To examine the impact of increasing heat on outdoor physical activity.
    • To assess the implications for active transport options.
    • To highlight the need for intentional design of climate strategies for co-benefits.

    Main Methods:

    • Literature review on heat effects on physical activity.
    • Analysis of climate data and transport trends.
    • Synthesis of existing research on climate adaptation and mitigation.

    Main Results:

    • Increasing heat significantly impedes the ability to engage in outdoor activities.
    • Active transport modes are particularly vulnerable to heat-related limitations.
    • Co-benefits of climate strategies are not automatic and require deliberate planning.

    Conclusions:

    • Climate change adaptation and mitigation strategies must actively integrate public health and active transport considerations.
    • Failure to design for co-benefits may exacerbate health inequalities and reduce sustainable mobility.
    • Proactive planning is essential to ensure climate strategies support, rather than hinder, active lifestyles.