(Press-News.org) In a remarkable breakthrough in the field of Mathematical Science, Professor Kyudong Choi from the Department of Mathematical Sciences at UNIST has provided an irrefutable proof that certain spherical vortices exist in a stable state. This groundbreaking discovery holds significant implications for predicting weather anomalies and advancing weather prediction technologies.
A vortex is a rotating region of fluid, such as air or water, characterized by intense rotation. Common examples include typhoons and tornadoes frequently observed in news reports. Professor Choi’s mathematical proof establishes the stability of specific types of vortex structures that can be encountered in real-world fluid flows.
The study builds upon the foundational Euler equation formulated by Leonhard Euler in 1757 to describe the flow of eddy currents. In 1894, British mathematician M. Hill mathematically demonstrated that a ball-shaped vortex could maintain its shape indefinitely while moving along its axis.
Professor Choi’s research confirms that Hill’s spherical vortex maximizes kinetic energy under certain conditions through the application of variational methods. By incorporating functional analysis and partial differential equation theory from mathematical analysis, this study extends previous investigations on two-dimensional fluid flows to encompass three-dimensional fluid dynamics with axial symmetry conditions.
One notable feature identified by Hill is the presence of strong upward airflow at the front of the spherical vortex—an attribute often observed in phenomena like typhoons and tornadoes. Professor Choi’s findings serve as a starting point for further studies involving measurements related to residual time associated with these ascending air currents.
“Research on vortex stability has gained international attention,” stated Professor Choi. “[A]nd it holds long-term potential for advancements in today’s weather forecasting technology.”
Supported by funding from Korea Research Foundation under the Ministry of Science and ICT as well as UNIST, this study was published ahead of official release on July 24th via the online edition of Communications on Pure and Applied Mathematics.
Journal Reference
Kyudong Choi, “Stability of Hill’s spherical vortex,” Commun. Pure Appl. Math., (2023).
END
Groundbreaking mathematical proof: new insights into typhoon dynamics unveiled
This study was published ahead of official release on July 24th via the online edition of Commun. Pure Appl. Math.
2023-09-29
ELSE PRESS RELEASES FROM THIS DATE:
Teams invent a new metallization method of modified tannic acid photoresist patterning
2023-09-29
The micro/nano metal pattern formation is a key step in the assembly of various devices. However, ex situ approaches of metal patterning limited their industrial applications due to the poor stability and dispersion of metal nanoparticles. The in situ electroless deposition after lithography patterning may be a better choice for avoiding the growth and aggregation of metal particles in the polymers. Tannic acid is rich in natural products, having an adjacent tri-hydroxyl structure, which can realize the in situ reduction of metal ions on the photoresist pattern. A team of scientists ...
MoMFs could be central to liver regeneration
2023-09-29
The liver is a vital organ that plays a role in many essential functions, including digestion, detoxification, and metabolism. When the liver is damaged, it has the remarkable ability to regenerate itself. However, the process of liver regeneration is not fully understood.
A critical aspect of liver regeneration is removing dead tissue and necrotic lesions. In a recent study published in the Journal of Clinical Investigation, Feng et al. showed that monocyte-derived macrophages (MoMFs) play a crucial role in this process. MoMFs are a type of white blood cell that is recruited to the liver in response to injury. Once in the liver, MoMFs engulf dead cells ...
A lethal parasite’s secret weapon: Infecting non-immune cells
2023-09-29
COLUMBUS, Ohio – The organisms that cause visceral leishmaniasis, a potentially deadly version of the parasitic disease that most often affects the skin to cause disfiguring disease, appear to have a secret weapon, new research suggests: They can infect non-immune cells and persist in those uncommon environments.
Researchers found the Leishmania donovani parasites in blood-related stem cells in the bone marrow of chronically infected mice – precursor cells that can regenerate all types of cells in the blood-forming system. The finding may help explain why some people who develop visceral leishmaniasis, which is ...
Ball milling provides high pressure benefits to battery materials
2023-09-29
Cheaper, more efficient lithium-ion batteries could be produced by harnessing previously overlooked high pressures generated during the manufacturing process.
Scientists at the University of Birmingham have discovered that routine ball milling can cause high pressure effects on battery materials in just a matter of minutes, providing a vital additional variable in the process of synthesizing battery materials.
The research (part of the Faraday Institution funded CATMAT project), led by Dr Laura Driscoll, Dr Elizabeth Driscoll and Professor Peter Slater at the University of Birmingham is published in RSC Energy Environmental Science.
The use ...
Congenital Heart Surgeons' Society (CHSS) and fourteen professional organizations announce recommendations for performing pediatric heart surgery in US
2023-09-29
September 29, 2023, Cincinnati, OH — A set of recommendations to address the known variation in outcomes at US congenital heart surgery centers has been endorsed by 15 collaborating societies led by the Congenital Heart Surgeons' Society (CHSS). The guidelines will appear in “Recommendations for Centers Performing Pediatric Heart Surgery in the United States," to be co-published in the World Journal for Pediatric and Congenital Heart Surgery, Annals of Thoracic Surgery, and Journal of Thoracic and Cardiovascular Surgery.
“In ...
Mouthwash for dogs: water additive with pomegranate helps to keep canine teeth healthy
2023-09-29
Periodontal disease is one of the most common canine diseases, affecting at least 80% of dogs aged three and over. Periodontal disease begins as gingivitis, where gums become red and inflamed, and may bleed. Untreated, the disease can progress to periodontitis, where the alveolar bone is progressively damaged so that teeth may loosen or fall out. In turn, periodontitis is a risk factor for other diseases like cardiovascular and lung disease.
A major cause of periodontal disease is poor oral hygiene, ...
Racial/ethnic minority patients may be less likely than white patients to receive palliative care during breast cancer treatment
2023-09-29
ORLANDO, Fla. – Despite a steady increase in palliative care utilization from 2004 to 2020, non-Hispanic Black, Hispanic, and Asian or Pacific Islander patients with metastatic breast cancer were less likely to receive palliative care than non-Hispanic white patients, according to results presented at the 16th AACR Conference on the Science of Cancer Health Disparities in Racial/Ethnic Minorities and the Medically Underserved, held September 29-October 2, 2023.
Palliative care consists of treatments or procedures intended ...
Spanish-speaking men in sexual minority groups may lack knowledge about cancers linked to HPV
2023-09-29
ORLANDO, Fla. – A study found multiple gaps in awareness and knowledge about the connection between the human papillomavirus (HPV) and several types of cancer among Hispanic and Latino men who identified as sexual minorities, according to results presented at the 16th AACR Conference on the Science of Cancer Health Disparities in Racial/Ethnic Minorities and the Medically Underserved, held September 29-October 2, 2023.
“Sexual minority men are a population group at higher risk for HPV infections and ...
Structural racism may play a role in increased cancer mortality rates among racial minorities
2023-09-29
ORLANDO, Fla. – Structural racism was associated with increased county-level cancer mortality rates among minority populations compared with whites, according to results presented at the 16th AACR Conference on the Science of Cancer Health Disparities in Racial/Ethnic Minorities and the Medically Underserved, held September 29-October 2, 2023.
“Applying measures that attempt to capture the multiple and compounding ways racism presents in policies, laws, and practices at a population level shows how racism manifests beyond interpersonal interactions to negatively impact cancer outcomes,” said presenter Joelle N. Robinson-Oghogho, ...
Racial and ethnic minorities may be less willing than others to participate in clinical trials
2023-09-29
ORLANDO, Fla. – A survey conducted in one cancer center’s catchment area found that while a majority of respondents would be willing to participate in a clinical trial, members of racial and ethnic minority groups were significantly less likely to participate than non-Hispanic whites, according to results presented at the 16th AACR Conference on the Science of Cancer Health Disparities in Racial/Ethnic Minorities and the Medically Underserved, held September 29-October 2, 2023. Reasons to participate ...
LAST 30 PRESS RELEASES:
Mammals were adapting from life in the trees to living on the ground before dinosaur-killing asteroid
Low LDL cholesterol levels linked to reduced risk of dementia
Thickening of the eye’s retina associated with greater risk and severity of postoperative delirium in older patients
Almost one in ten people surveyed report having been harmed by the NHS in the last three years
Enhancing light control with complex frequency excitations
New research finds novel drug target for acute myeloid leukemia, bringing hope for cancer patients
New insight into factors associated with a common disease among dogs and humans
Illuminating single atoms for sustainable propylene production
New study finds Rocky Mountain snow contamination
Study examines lactation in critically ill patients
UVA Engineering Dean Jennifer West earns AIMBE’s 2025 Pierre Galletti Award
Doubling down on metasurfaces
New Cedars-Sinai study shows how specialized diet can improve gut disorders
Making moves and hitting the breaks: Owl journeys surprise researchers in western Montana
PKU Scientists simulate the origin and evolution of the North Atlantic Oscillation
ICRAFT breakthrough: Unlocking A20’s dual role in cancer immunotherapy
How VR technology is changing the game for Alzheimer’s disease
A borrowed bacterial gene allowed some marine diatoms to live on a seaweed diet
Balance between two competing nerve proteins deters symptoms of autism in mice
Use of antifungals in agriculture may increase resistance in an infectious yeast
Awareness grows of cancer risk from alcohol consumption, survey finds
The experts that can outsmart optical illusions
Pregnancy may reduce long COVID risk
Scientists uncover novel immune mechanism in wheat tandem kinase
Three University of Virginia Engineering faculty elected as AAAS Fellows
Unintentional drug overdoses take a toll across the U.S. unequally, study finds
A step toward plant-based gelatin
ECMWF unveils groundbreaking ML tool for enhanced fire prediction
The food and fuel that farms itself
Patient- and Community-Level Characteristics Associated With RSV Vaccination
[Press-News.org] Groundbreaking mathematical proof: new insights into typhoon dynamics unveiledThis study was published ahead of official release on July 24th via the online edition of Commun. Pure Appl. Math.