Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Assessment of Ventilation I: Respiratory Rate

Assessment of Ventilation I: Respiratory Rate

Assessment of Ventilation
A Ventilation assessment is critical for monitoring a patient's health status. Respiration, one of the most accessible vital signs, provides insights into the function of numerous body systems and can indicate serious health issues, such as brainstem injuries from head trauma.
Critical Guidelines for Assessing Ventilation:

Factors Affecting Pulmonary Ventilation

Factors Affecting Pulmonary Ventilation

Besides the pressure difference between the external environment and the lungs, the airflow rate and ease of pulmonary ventilation are also influenced by three other factors: surface tension of the fluid in the alveoli, compliance of the lungs, and airway resistance.
Alveolar Surface Tension
The alveolar fluid lines the luminal surface of the alveoli and exerts a force called surface tension. This force is caused by the polar water molecules in the liquid being more strongly attracted to each...

Thermal Insulation in Masonry Walls

Thermal Insulation in Masonry Walls

In hot, dry climates, the thermal mass of masonry walls can be beneficial, absorbing heat during the day and releasing it at night, thereby stabilizing indoor temperatures. However, in most other climates, additional insulation is necessary to enhance thermal resistance.
External insulation can be applied using an Exterior Insulation and Finish System (EIFS), which involves affixing panels of plastic foam to the wall and covering them with a polymeric stucco reinforced with glass fiber mesh....

Assessment of Ventilation II: Respiratory Depth and Rhythm

Assessment of Ventilation II: Respiratory Depth and Rhythm

Respiratory Depth
Respiratory depth measures the volume of air inhaled or exhaled during a breath. It can vary from shallow to deep and typically remains consistent when a person is at rest or asleep. Occasionally, individuals will automatically inhale deeply, known as sighing, which inflates the lungs with more air than normal breathing.
To assess respiratory depth, observe the degree of chest excursion or movement:

Heating and Cooling Curves

Heating and Cooling Curves

When a substance—isolated from its environment—is subjected to heat changes, corresponding changes in temperature and phase of the substance is observed; this is graphically represented by heating and cooling curves.
For instance, the addition of heat raises the temperature of a solid; the amount of heat absorbed depends on the heat capacity of the solid (q = mcsolidΔT). According to thermochemistry, the relation between the amount of heat absorbed or released by a substance, q, and its...

Design Example: Sustainability in Concrete Building

Design Example: Sustainability in Concrete Building

As the construction industry moves towards more eco-friendly practices, concrete's adaptability and its ability to incorporate sustainable features make it a key material in the drive towards greener building solutions.
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...

You might also read

Related Articles

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

Sort by

Same author

EcoImpact: energy conservation using data-driven model predictive control and interpretable machine learning in the buildings sector.

Scientific reports·2026

Same author

Affordability assessment of passive retrofitting measures for residential buildings using life cycle assessment.

Heliyon·2023

Same author

Neurological Complications of COVID-19 in Children.

Pediatric annals·2021

Same author

An Overview of Recent Advances in the Synthesis and Applications of the Transition Metal Carbide Nanomaterials.

Nanomaterials (Basel, Switzerland)·2021

Same author

A novel TSC1 variant associated with tuberous sclerosis and sacrococcygeal teratoma.

Human genome variation·2020

Same author

Gender Differences in Patient-Reported Outcomes Among Adults With Atherosclerotic Cardiovascular Disease.

Journal of the American Heart Association·2018

Same journal

Novel Parent Survey Measures Sensory Behaviors Incorporating Sensory Modality and Stimulus Intensity.

Heliyon·2026

Same journal

Expression of concern: "SQSTM1/p62 promotes the progression of gastric cancer through epithelial-mesenchymal transition" [Heliyon 10 (2024) e24409].

Heliyon·2026

Same journal

Expression of concern: "TL1A promotes metastasis and EMT process of colorectal cancer" [Heliyon 10 (2024) e24392].

Heliyon·2026

Same journal

Expression of concern: "Factors affecting timing of surgery following neoadjuvant chemoradiation for esophageal cancer" [Heliyon 9 (2023) e23212].

Heliyon·2026

Same journal

Expression of concern: "On stratified single-valued soft topogenous structures" [Heliyon 10 (2024) e27926].

Heliyon·2026

Same journal

Expression of concern: "Artifact removal and motor imagery classification in EEG using advanced algorithms and modified DNN" [Heliyon 10 (2024) e27198].

Heliyon·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Dec 5, 2025

Design and Optimization Strategies of a High-Performance Vented Box

Design and Optimization Strategies of a High-Performance Vented Box

Published on: June 9, 2023

Simulation study for natural ventilation retrofitting techniques in educational classrooms - A case study.

Shouib Nouh Ma'bdeh¹, Amani Al-Zghoul¹, Tamer Alradaideh¹

¹Department of Architecture, Jordan University of Science and Technology, Irbid 22110, Jordan.

|October 21, 2020

Summary

This summary is machine-generated.

Retrofitting existing classrooms with a solar chimney and wind tower significantly improves indoor air quality (IAQ) and thermal comfort. This natural ventilation strategy offers substantial energy savings compared to air conditioning systems.

Keywords:

Air quality Architecture Civil engineering Energy Energy conservation Energy consumption Energy use in building Environmental assessment Environmental science Green engineering Indoor air quality Indoor air temperature Natural ventilation Retrofit techniques

More Related Videos

Ex Vivo Porcine Experimental Model for Studying and Teaching Lung Mechanics

Ex Vivo Porcine Experimental Model for Studying and Teaching Lung Mechanics

Published on: April 19, 2024

Exploring the Effects of Atmospheric Forcings on Evaporation: Experimental Integration of the Atmospheric Boundary Layer and Shallow Subsurface

Exploring the Effects of Atmospheric Forcings on Evaporation: Experimental Integration of the Atmospheric Boundary Layer and Shallow Subsurface

Published on: June 8, 2015

Related Experiment Videos

Last Updated: Dec 5, 2025

Design and Optimization Strategies of a High-Performance Vented Box

Design and Optimization Strategies of a High-Performance Vented Box

Published on: June 9, 2023

Ex Vivo Porcine Experimental Model for Studying and Teaching Lung Mechanics

Ex Vivo Porcine Experimental Model for Studying and Teaching Lung Mechanics

Published on: April 19, 2024

Exploring the Effects of Atmospheric Forcings on Evaporation: Experimental Integration of the Atmospheric Boundary Layer and Shallow Subsurface

Exploring the Effects of Atmospheric Forcings on Evaporation: Experimental Integration of the Atmospheric Boundary Layer and Shallow Subsurface

Published on: June 8, 2015

Area of Science:

Building Science
Environmental Engineering
Sustainable Architecture

Background:

Building retrofitting is crucial for sustainable development and enhancing indoor air quality (IAQ).
Classroom IAQ directly impacts student health and academic performance.
Improving IAQ in existing classrooms with minimal architectural changes presents significant challenges, especially in hot, arid climates.

Purpose of the Study:

To evaluate various natural ventilation retrofitting techniques for improving IAQ in existing classrooms.
To identify the most effective natural ventilation strategy for classrooms at Jordan University of Science and Technology.
To assess the energy savings and economic viability of the proposed retrofitting methods.

Main Methods:

Computer simulations were employed to analyze ventilation rates, operative temperatures, relative humidity, and CO2 concentrations.
A base case classroom scenario was simulated and compared against scenarios with implemented retrofitting techniques.
The study focused on natural ventilation strategies suitable for hot, arid regions.

Main Results:

The combination of a solar chimney assisting a wind tower yielded the best results.
This integrated system led to increased comfort hours, improved ventilation rates, reduced CO2 levels, and enhanced relative humidity.
A 39% energy saving was projected compared to traditional split unit air conditioning systems.

Conclusions:

The solar chimney-assisted wind tower is the most efficient natural ventilation retrofitting technique for the studied classroom environment.
The proposed system offers significant improvements in IAQ and thermal comfort while reducing energy consumption.
Economic assessment confirmed the positive financial viability of the implemented natural ventilation strategy.