Showing 1-25 of 25 resultsfor "Index Terms":Hyperbaric Environment
"Index Terms":Hyperbaric Environment
- Sort
Get notified when new research is published matching your search criteria.
Sort By
Results
Exploring Nonlinear Heart Rate Variability for Assessing the Autonomic Nervous System in Hyperbaric Environments
María Pérez Zabalza;María Dolores Peláez-Coca;María Teresa Lozano Albalate;Juan Bolea
2024 13th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO)
Year: 2024 | Conference Paper |
Underwater diving presents noteworthy physiological challenges, impacting the autonomic nervous system (ANS) balance. Heart Rate Variability (HRV) is a widely used tool for ANS assessment. While standard HRV methods are prevalent in diving research, nonlinear HRV methods are still not fully exploited. In this study, we characterized cardiac variability complexity in hyperbaric environments using n...Show More
Automation of ventilator control for hyperbaric oxygen therapy
IEEE 30th Annual Northeast Bioengineering Conference, 2004. Proceedings of the
Year: 2004 | Conference Paper |
Cited by: Papers (2)
The following study proposes the use of an automatically controlled ventilator during hyperbaric oxygen therapy (HBO therapy). HBO therapy has been used clinically since the mid 1800s and is currently approved by the Undersea and Hyperbaric Medical Society (UHMS) to treat 13 different medical conditions. The theory behind this therapy is that if a patient breathes 100% oxygen at pressures greater ...Show More
Photoplethysmographic Waveform in Hyperbaric Environment
María Dolores Peláez Coca;Alberto Hernando;Carlos Sánchez;María Teresa Lozano Albalate;David Izquierdo;Eduardo Gil
2019 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)
Year: 2019 | Conference Paper |
Cited by: Papers (1)
The objective of this work is the identification of significant variations of morphological parameters of the photoplethysmographic (PPG) signal when the subjects are exposed to an increase in atmospheric pressure. To achieve this goal, the PPG signal of 26 subjects, exposed to a hyperbaric environment whose pressure increases up to 5 atm, has been recorded. From this record, segments of 4 minutes...Show More
First Page of the Article
Show MoreHow to Employ a Diving Company: A Discussion from a Management Viewpoint
OCEANS 81
Year: 1981 | Conference Paper |
This paper provides managers with an understanding of what a diver is, the cost of diving services, and an awareness of the problems and considerations involved in the performance of work underwater. To this end, it serves as a brief introduction to the commercial diving industry and underwater world.Show More
How to Employ a Diving Company: A Discussion from a Management Viewpoint
Year: 1981 | Conference Paper |
Hard Authentication of H.264 Video Applying MPEG-21 Generic Bitstream Syntax Description (gBSD)
2007 IEEE International Conference on Multimedia and Expo
Year: 2007 | Conference Paper |
While trivial research has been conducted in watermarking and authentication of H.264 video in recent years, most techniques require cascaded operations within a video adaptation scenario. In this paper, we propose an authentication scheme for adapted H.264 video content to detect integrity at the receiver's side without the need for cascaded operations. The proposed scheme utilizes MPEG-21 gBSD f...Show More
First Page of the Article
Show MoreInvestigation of the photodissociation quantum efficiency of hemoglobin derivatives
2019 IEEE 39th International Conference on Electronics and Nanotechnology (ELNANO)
Year: 2019 | Conference Paper |
Cited by: Papers (4)
The limit quantum efficiency of light interaction with oxyhemoglobin and carboxyhemoglobin at wavelengths of 525, 605 and 850 nm corresponding to the maxima of the action spectrum is studied. Obtained in vivo evaluations of the quantum yield of photodissociation of oxyhemoglobin HbO2 and carboxyhemoglobin HbCO range from 0.1 to 0.14 for HbO2 and from 0.76 to 0.90 for HbCO. The yield of photodissoc...Show More
Research status of depression related to virtual reality technology in China
2020 International Conference on Intelligent Computing and Human-Computer Interaction (ICHCI)
Year: 2020 | Conference Paper |
Cited by: Papers (1)
This article aims to study the current research status of the application of virtual reality technology in depression in my country. Entering the precise search of virtual reality and depression through the advanced search topic of CNKI, there are 12 results. Read and study the research results of others carefully, and this paper selects 4 more prominent research results for analysis, although the...Show More
Autonomic Nervous System Measurement in Hyperbaric Environments Using ECG and PPG Signals
Alberto Hernando;María Dolores Peláez-Coca;María Teresa Lozano;Montserrat Aiger;David Izquierdo;Alberto Sánchez;María Isabel López-Jurado;Ignacio Moura;Joaquín Fidalgo;Jesús Lázaro;Eduardo Gil
The main aim of this paper was to characterize the Autonomic Nervous System response in hyperbaric environments using electrocardiogram (ECG) and pulse-photoplethysmogram (PPG) signals. To that end, 26 subjects were introduced into a hyperbaric chamber and five stages with different atmospheric pressures (1 atm; descent to 3 and 5 atm; ascent to 3 and 1 atm) were recorded. Respiratory information ...Show More
Photoplethysmographic Waveform and Pulse Rate Variability Analysis in Hyperbaric Environments
María Dolores Peláez-Coca;Alberto Hernando;María Teresa Lozano;Carlos Sánchez;David Izquierdo;Eduardo Gil
The main aim of this work is to identify alterations in the morphology of the pulse photoplethysmogram (PPG) signal, due to the exposure of the subjects to a hyperbaric environment. Additionally, their Pulse Rate Variability (PRV) is analysed to characterise the response of their Autonomic Nervous System (ANS). To do that, 28 volunteers are introduced into a hyperbaric chamber and five sequential ...Show More
A discussion of dry hyperbaric and wet welding will be made with comments on the economics of both types. The Underwater Welding Specification AWS D3.6 will be described as an aid to engineers and contractors to prescribe and assure sound underwater welding. Recent research and development work in underwater welding will be discussed and the effects of hardness, porosity, and fatigue on wet welds ...Show More
Gradient-Based Illumination Description for Image Forgery Detection
The goal of blind image forensics is to determine authenticity and origin of an image without using an explicitly embedded security scheme. Most existing forensic methods can roughly be grouped into statistical and physics-based approaches. Statistical methods can oftentimes be fully automated, and achieve impressive results on current state-of-the-art benchmarks. Physics-based methods explain ima...Show More
Detecting Double JPEG Compressed Color Images With the Same Quantization Matrix in Spherical Coordinates
Jinwei Wang;Hao Wang;Jian Li;Xiangyang Luo;Yun-Qing Shi;Sunil Kumar Jha
Detection of double Joint Photographic Experts Group (JPEG) compression is an important part of image forensics. Although methods in the past studies have been presented for detecting the double JPEG compression with a different quantization matrix, the detection of double JPEG compression with the same quantization matrix is still a challenging problem. In this paper, an effective method to detec...Show More
Low-Cost Air Sensing System
BISMITA SAHOO;AKANKSHA MAHARANA;MAYANK MURALI;LAVANYA SHIVANI;G SUGANYA;M PREMALATHA
2019 3rd International Conference on Computing and Communications Technologies (ICCCT)
Year: 2019 | Conference Paper |
Cited by: Papers (4)
With the ever growing population, increase in vehicle use, industrialization and urbanization, the level of pollution in the air has increased resulting in several harmful effects on the well-being of humans by directly affecting their health. This paper proposes a model based on IoT called the Air Sensing System which will help monitor the quality of air that we breathe over a cloud based platfor...Show More
Broadcast delivery system for broadband media content
Josu Gorostegui;Angel Martin;Mikel Zorrilla;Iñaki Alvaro;Jon Montalban
2017 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting (BMSB)
Year: 2017 | Conference Paper |
Cited by: Papers (1)
The pace of technology adoption in the broadcast industry is moving forward slower than in broadband media services because of different aspects. While the broadband penetration rate is growing sharply, the required investment to embrace the broadband content catalogue into the actual broadcast solutions is a major challenge. Nowadays, broadband media services offers more content by means of Inter...Show More
A gas balance control system for use with a portable hyperbaric chamber
Images of the Twenty-First Century. Proceedings of the Annual International Engineering in Medicine and Biology Society,
Year: 1989 | Conference Paper |
Cited by: Papers (3)
The authors describe a system of gas-balance control to be used with the Gamow Bag, a portable hyperbaric chamber. A face mask and latex bladder are utilized along with a small amount of tubing to create the proper environment within the chamber. The system is lightweight and efficient, and it requires little effort on the part of those operating the chamber from the outside. Once the chamber is c...
Show More
First Page of the Article
Show MoreAdaptation of land based Hydraulic Pump for Deep sea Applications: Testing and Qualification
Rajesh Siva;P. Muthuvel;A.A. Gnanaraj;B.O. Vishvanath;K. Gopakumar;Ramadass. G. A
In heavy machineries the power to weight ratio of the drive train performs a major role in designing the mechanics of the movers. Hydraulic system were preferred for the highest power to weight ratio and compact in design for the work to be accomplished. It is even more critical in the design considerations of the underwater vehicle for the hyperbaric applications. Axial piston pump coupled with t...Show More
A survey on heliumspeech communications in saturation diving
Shibing Zhang;Lili Guo;Hongjun Li;Zhihua Bao;Xiaoge Zhang;Yonghong Chen
With the development of society and the progress of technology, more and more ocean activities are carried out. It results in booming of deep-sea diving. The use of helium-oxygen mixture (as a kind of breathing gas) solves the physiological problems of divers in saturated diving, but it brings about the Heliumspeech voice communication problem, the drop of speech intelligibility. There is no doubt...Show More
This paper reviews the present state-of-the-art of welding technology which is rapidly expanding. After a brief introduction, a discussion is made on how underwater welding technologies and their applications have developed. The paper then discusses the status of underwater welding techniques currently in use. A short discussion is also given on technical problems associated with underwater weldin...Show More
Safety Ranges for Heart Rate Variability Parameters in Hyperbaric Environments
Carlos Sánchez;Alberto Hernando;Juan Bolea;David Izquierdo;María Teresa Lozano;María Dolores Peláez-Coca
2020 Computing in Cardiology
Year: 2020 | Conference Paper |
The Autonomic Nervous System (ANS) tries to maintain homeostasis in hyperbaric environments, but its activity may present large variability between subjects. The aim of this study is to establish safety ranges for ANS-related indices derived from the electrocardiographic signal (ECG) during diving and use them to identify subjects with abnormal ANS response and avoid potential diving accidents. A ...Show More
Multivariable relationships between autonomic nervous system related indices in hyperbaric environments
Cristina Pérez-Martínez;María Dolores Peláez-Coca;Alberto Hernando;Eduardo Gil;Carlos Sánchez
2019 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)
Year: 2019 | Conference Paper |
The main aim of this work is to model the relationships between parameters extracted from the heart rate variability (HRV) signal, which is derived from the electrocardiogram (ECG), at different stages of a simulated immersion in a hyperbaric chamber. The response of the Autonomic Nervous System is known to be affected by changes in atmospheric pressure, reflected in changes in the HRV signal. A d...Show More
New developments in diving systems and underwater tools are increasing the extent of noise exposure of divers. The need for effective, but appropriate hearing-conservation regulations has been recognized. This paper presents a review of the physical and physiological factors which determine auditory sensitivity in hyperbaric environments and the effects of noise on divers. Experimental evidence on...Show More
The effects of the underwater environment on perception, cognition and memory
'Challenges of Our Changing Global Environment'. Conference Proceedings. OCEANS '95 MTS/IEEE
Year: 1995 | Conference Paper |
Cited by: Papers (7)
Physiological changes in humans due to underwater environments have been well studied, but much less is known about the psychological effects of diving. The possible psychological effects include social, emotional, and cognitive alterations. This paper focuses on cognitive changes, especially changes in perception and memory, and reviews studies of the effects of the underwater environment that ha...Show More
IEEE Account
Purchase Details
Profile Information
Need Help?
- US & Canada: +1 800 678 4333
- Worldwide: +1 732 981 0060
- Contact & Support
- About IEEE Xplore
- Contact Us
- Help
- Accessibility
- Terms of Use
- Nondiscrimination Policy
- Sitemap
- Privacy & Opting Out of Cookies
A not-for-profit organization, IEEE is the world's largest technical professional organization dedicated to advancing technology for the benefit of humanity.
© Copyright 2025 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.