scholarly journals Development of a soot concentration estimator for industrial combustion applications

2021 ◽  
Author(s):  
Sepehr Bozorgzadeh
Keyword(s):  
Adverse Effects ◽  
Human Health ◽  
Atmospheric Pressure ◽  
Soot Formation ◽  
Soot Concentration ◽  
Important Goal ◽  
Cfd Simulations ◽  
Preliminary Results ◽  
Volume Fractions ◽  
Entire History

Soot emissions from combustion devices are known to have adverse effects on the environment and human health. Thus, the development of techniques to reduce soot formation and emissions remains an important goal of researchers and industry. This study leverages existing knowledge in soot modelling and soot formation fundamentals to develop a stand-alone, computationally inexpensive soot concentration estimator, to be linked to CFD simulations as a post-processor. The estimator was developed using fluid parcel tracking techniques that can track entire history to which a particle or fluid parcel has been exposed. Preliminary results suggest that the estimator is capable of predicting peak and emitted soot volume fractions in atmospheric pressure flames.

scholarly journals Development of a soot concentration estimator for industrial combustion applications

2021 ◽  
Author(s):  
Sepehr Bozorgzadeh
Keyword(s):  
Adverse Effects ◽  
Human Health ◽  
Atmospheric Pressure ◽  
Soot Formation ◽  
Soot Concentration ◽  
Important Goal ◽  
Cfd Simulations ◽  
Preliminary Results ◽  
Volume Fractions ◽  
Entire History

Soot emissions from combustion devices are known to have adverse effects on the environment and human health. Thus, the development of techniques to reduce soot formation and emissions remains an important goal of researchers and industry. This study leverages existing knowledge in soot modelling and soot formation fundamentals to develop a stand-alone, computationally inexpensive soot concentration estimator, to be linked to CFD simulations as a post-processor. The estimator was developed using fluid parcel tracking techniques that can track entire history to which a particle or fluid parcel has been exposed. Preliminary results suggest that the estimator is capable of predicting peak and emitted soot volume fractions in atmospheric pressure flames.

scholarly journals Development of a soot concentration estimation library for industrial combustion applications using Lagrangian parcel tracking

2021 ◽  
Author(s):  
Raymond Alexander
Keyword(s):  
Human Health ◽  
Gas Phase ◽  
Diffusion Flames ◽  
Soot Formation ◽  
Computational Cost ◽  
Soot Concentration ◽  
Cfd Simulations ◽  
Concentration Estimation ◽  
Low Computational Cost ◽  
Harmful Effects

Soot emissions from combustion devices are known to have harmful effects on the environment and human health. This project leverages existing knowledge in soot modelling and soot formation fundamentals to develop a stand-alone, computationally inexpensive soot concentration estimator to be linked to CFD simulations as a post-processor. The estimator consists of a library generated using the hystereses of soot-containing fluid parcels, which relates soot concentration to the aggregated gas-phase environment histories to which a fluid parcel has been exposed. The estimator can be used to relate soot concentration to computed parcel hystereses through interpolation techniques. The estimator shows the potential ability to produce accurate predictions with very low computational cost in laminar coflow diffusion flames. Results also show that as flame data representing a broader set of conditions is added to the library, the estimator becomes applicable to a wider range of flames.

scholarly journals Development of a soot concentration estimation library for industrial combustion applications using Lagrangian parcel tracking

2021 ◽  
Author(s):  
Raymond Alexander
Keyword(s):  
Human Health ◽  
Gas Phase ◽  
Diffusion Flames ◽  
Soot Formation ◽  
Computational Cost ◽  
Soot Concentration ◽  
Cfd Simulations ◽  
Concentration Estimation ◽  
Low Computational Cost ◽  
Harmful Effects

Soot emissions from combustion devices are known to have harmful effects on the environment and human health. This project leverages existing knowledge in soot modelling and soot formation fundamentals to develop a stand-alone, computationally inexpensive soot concentration estimator to be linked to CFD simulations as a post-processor. The estimator consists of a library generated using the hystereses of soot-containing fluid parcels, which relates soot concentration to the aggregated gas-phase environment histories to which a fluid parcel has been exposed. The estimator can be used to relate soot concentration to computed parcel hystereses through interpolation techniques. The estimator shows the potential ability to produce accurate predictions with very low computational cost in laminar coflow diffusion flames. Results also show that as flame data representing a broader set of conditions is added to the library, the estimator becomes applicable to a wider range of flames.

scholarly journals Plant-Derived Extracellular Vesicles: Current Findings,Challenges, and Future Applications

Membranes ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 411
Author(s):  
Nader Kameli ◽  
Anya Dragojlovic-Kerkache ◽  
Paul Savelkoul ◽  
Frank R. Stassen
Keyword(s):  
Human Health ◽  
Extracellular Vesicles ◽  
Preliminary Results ◽  
In Vivo Experiments ◽  
Health And Disease ◽  
Conducting Research ◽  
Protocol Standardization ◽  
Insight Into

In recent years, plant-derived extracellular vesicles (PDEVs) have gained the interest of many experts in fields such as microbiology and immunology, and research in this field has exponentially increased. These nano-sized particles have provided researchers with a number of interesting findings, making their application in human health and disease very promising. Both in vitro and in vivo experiments have shown that PDEVs can exhibit a multitude of effects, suggesting that these vesicles may have many potential future applications, including therapeutics and nano-delivery of compounds. While the preliminary results are promising, there are still some challenges to face, such as a lack of protocol standardization, as well as knowledge gaps that need to be filled. This review aims to discuss various aspects of PDEV knowledge, including their preliminary findings, challenges, and future uses, giving insight into the complexity of conducting research in this field.

Understanding Chemicals in Products

2020 ◽  
Vol 42 (3) ◽  
pp. 25-25
Keyword(s):  
Adverse Effects ◽  
Best Practices ◽  
Human Health ◽  
Building Materials ◽  
Global Environment ◽  
Global Environment Facility ◽  
Policy Issues ◽  
Strategic Approach ◽  
Chemicals Management ◽  
Funded Project

Abstract The Strategic Approach to International Chemicals Management (SAICM) has published a policy brief that addresses chemicals of concern in products such as textiles, toys, building materials, and electronics, and efforts to minimize their adverse effects on human health and the environment. The policy brief titled, “Understanding Chemicals in Products,” is a contribution from the Global Environment Facility (GEF)-funded project on “Global Best Practices on Emerging Chemical Policy Issues of Concern under SAICM.”

scholarly journals Special Issue Sources and Composition of Ambient Particulate Matter

Atmosphere ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 462
Author(s):  
Manousos-Ioannis Manousakas
Keyword(s):  
Particulate Matter ◽  
Adverse Effects ◽  
Human Health ◽  
Ambient Particulate Matter ◽  
Special Issue

Research related to ambient particulate matter (PM) remains very relative today due to the adverse effects PM have on human health. [...]

Third Report on the Publication and Conservation of the Tomb of Ramesses III in the Valley of the Kings (KV 11)

2021 ◽  
pp. 030751332110605
Author(s):  
Anke Weber ◽  
Willem Hovestreydt ◽  
Lea Rees
Keyword(s):  
British Library ◽  
Important Goal ◽  
Preliminary Results ◽  
Conservation Project ◽  
Victoria And Albert Museum ◽  
Wall Decoration ◽  
Archive Material

Since antiquity, the tomb of Ramesses III (KV 11) has been among the most frequently visited royal tombs in the Valley of the Kings. It was also one of the first to be described and documented in detail by European travellers in the eighteenth to nineteenth centuries. As large parts of the wall decoration of the tomb, especially in its rear, are now destroyed, the drawings, notes and squeezes of those early researchers who saw the site in its former splendour offer an invaluable resource for the reconstruction of the tomb’s unique decoration programme. The collection, revision, and publication of all relevant archive material concerning KV 11 is an important goal of The Ramesses III (KV 11) Publication and Conservation Project. The following article reports on first and preliminary results from the authors’ research in the archives of the British Library and the Victoria and Albert Museum in London, as well as the Bodleian Libraries and the Griffith Institute in Oxford, carried out in September 2019 and made possible through the Centenary Award 2019 of the Egypt Exploration Society.

scholarly journals CFD analysis of the fluid motion in the isolation rooms

2021 ◽  
Vol 850 (1) ◽  
pp. 012025
Author(s):  
P Tamil Selvan ◽  
K Abhiram ◽  
Ch Anu Raghava ◽  
V Naveen Sai
Keyword(s):  
World Health Organization ◽  
Atmospheric Pressure ◽  
Pressure Difference ◽  
Fluid Motion ◽  
Particle Diameter ◽  
World Health ◽  
Cfd Analysis ◽  
Cfd Simulations ◽  
The World ◽  
Health Organization

Abstract COVID-19 is declared as a pandemic by WHO (world health organization) which has led to many deaths all over the world. This study deals with the fluid motion in the isolation rooms with 12 or more ACH (air changes per hour) and maintaining a minimum pressure difference of 2.5 Pascal that can help in reducing the transmission of the virus from affected people. ANSI/ASHRAE guidelines are considered for the analysis. These Isolation rooms help in eradicating the spread of the contaminated particles to the surroundings by creating a pressure less than the atmospheric pressure in in the room. CFD simulations are carried to study the fluid motion of the particles emitted by the patient inside the room. The Analysis is carried out with various human cough velocities of different particle diameters and we observed from the results that the time taken by the particles to reach the exhaust increases with increase in particle diameter, and the flow inside the room increases with increase in human cough velocity.

scholarly journals An epidemiological study on alcohol consumption and knowledge of its harmful effects on human health among rural adult population of adopted villages covered under field practice area of a private medical college in Udaipur, Rajasthan

2018 ◽  
Vol 5 (11) ◽  
pp. 4874
Author(s):  
Rupesh Kumar ◽  
Rakhi Luthra ◽  
Maitri R. Hathi
Keyword(s):  
Alcohol Consumption ◽  
Adverse Effects ◽  
Human Health ◽  
Sleep Disturbances ◽  
Peer Group ◽  
Adult Population ◽  
Public Health Issue ◽  
Medical College ◽  
Field Practice ◽  
Harmful Effects

Background: Consumption of alcohol among adults is a serious public health issue worldwide. However the knowledge of adverse effects of alcohol consumption on human health is very negligibly less in small towns and villages of India. Present study was conducted to determine the extent of alcohol intake and the knowledge of its adverse effects on human health among adult population.Methods: A cross-sectional study was carried out on randomly selected 400 rural adults from a field practice area of private medical college, Udaipur.Results: Prevalence of alcohol consumption was found to be (47.25%) with (49.36%) males and (39%) females. More than half of drinkers (55.9%) were belonging to 30-39 age group. Country liquor was preferred by (68.88%) and only (17.77%) consume English (IMFL). (56%) of alcohol consumers were drinking alcohol for more than a year. Most of the drinkers (49%) were induced by their friends, (24%) were induced/influenced by their parents. (42.25%) drinkers had knowledge of harmfulness of alcohol drinking; however the awareness per se did not have statistically significant effect for alcohol consumption. Results showed that the knowledge of excessive intake of alcohol can cause harmful effects on human health like Infertility to woman, irregular menstrual cycle, cancer were statistically significant (p<0.05) gender wise, while effects like depression, sleep disturbances, alcoholic hepatises, liver disease, malnutrition were statistically not significant (p>0.05).Conclusions: There is a need to enhance awareness on adverse effects of alcohol and at least bring down consumption level among heavy drinkers through peer group/family/community involvement.

scholarly journals PPARs and Xenobiotic-Induced Adverse Effects: Relevance to Human Health

PPAR Research ◽  
2010 ◽  
Vol 2010 ◽  
pp. 1-4 ◽  
Author(s):  
Christopher Lau ◽  
Barbara D. Abbott ◽  
J. Christopher Corton ◽  
Michael L. Cunningham
Keyword(s):  
Adverse Effects ◽  
Human Health
Sign in / Sign up

Export Citation Format

Share Document