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The un/protected heads were exposed to an identical blast overpressure of 520 kPa in a frontal open blast scenario. (asme.org)
The increase in the sand mass further mitigates the blast parameters of peak overpressure and positive impulse. (elsevierpure.com)
This work evaluates explosive blast overpressure and impulse effects at the sub-concussive level on neurocognitive performance assessed with the Defense Automated Neurobehavioral Assessment (DANA) across seven breacher training courses conducted by the US Military. (frontiersin.org)
The blast characteristic that was consistently associated with performance change was peak overpressure. (frontiersin.org)
Overall, this study provides evidence that increasing blast overpressure, defined as peak overpressure experienced in a training day, can lead to transient degradations in neurocognitive performance as seen on the DANA PRT subtask, which may generalize to other capabilities. (frontiersin.org)
this work concentrates on the primary mechanism, direct exposure to blast overpressure. (frontiersin.org)
Further, the focus here is overpressure exposure at a sub-concussive level, rather than a level of exposure that directly results in diagnosable injury from a single blast event. (frontiersin.org)
NIOSH evaluated three damage risk criteria (MIL-STD 1474D, A-weighted equivalent 8-hour level LAeq8, and the Auditory Hazard Assessment Algorithm for Human (AHAAH)) with the Albuquerque Blast Overpressure exposures and the LAeq8 was found to provide the best fit and greatest discrimination for exposures. (cdc.gov)

Title : Blast Wave Propagation In Underground Mines Personal Author(s) : Mainiero, Richard J.;Weiss, Eric S. (cdc.gov)

Like light or sound waves, when a blast wave reaches a boundary between two materials, part of it is transmitted, part of it is absorbed, and part of it is reflected. (wikipedia.org)
In this way the interaction of blast waves is similar to that of sound waves or water waves. (wikipedia.org)
This is similar to the speed of sound waves traveling through the ionosphere. (scitechdaily.com)
The Tonga volcano blasted sound waves through the atmosphere for days. (whoi.edu)
Once those seismic waves interact with the water column via geological/bathymetric features in the ocean, they turn into acoustic waves (aka, sound waves). (whoi.edu)
Averbuch believes that underwater geology may have played a role in blocking sound waves as they traveled through the ocean. (whoi.edu)

Like other types of explosions, a blast wave can also cause damage to things and people by the blast wind, debris, and fires. (wikipedia.org)
The blast is considered one of the most powerful non-nuclear, man-made explosions in human history. (scitechdaily.com)
Blast injuries result from explosions that have the capability to cause multisystem, life-threatening injuries in single or multiple victims simultaneously. (medscape.com)
[ 7 ] An analysis of data from the American College of Surgeons National Trauma Databank (NTDB) found that the majority of blast injuries (56%) resulted from fireworks, gas, or pressurized container explosions. (medscape.com)

A solid-fueled Vega launcher fired through a low cloud deck and sped into orbit from the South American jungle early Thursday with a pioneering European spacecraft that marks a key step in a century-long quest to detect elusive gravitational waves predicted to permeate the cosmos. (astronomynow.com)
When two massive galaxies harbouring supermassive black holes collide, their black holes ultimately combine - a process that could be the strongest source of elusive gravitational waves, still yet to be directly detected. (astronomynow.com)
Seeking to expand how we observe and understand phenomena such as supernovae and colliding black holes that generate gravitational waves, the National Science Foundation has just dedicated the Advanced Laser Gravitational Wave Observatories (Advanced LIGO) in Richland, Washington and Livingston, Louisiana. (astronomynow.com)

Reference: "Atmospheric wave energy of the 2020 August 4 explosion in Beirut, Lebanon, from ionospheric disturbances" by Bhaskar Kundu, Batakrushna Senapati, Ai Matsushita and Kosuke Heki, 2 February 2021, Scientific Reports . (scitechdaily.com)
Police officers said this was the second incident of terrorism in Lahore after the car bomb blast in Johar Town on June 23, 2021, that killed four people and injured over 21 others. (dawn.com)

A 2020 explosion in Lebanon's port city of Beirut led to a southward-bound, high-velocity atmospheric wave that rivaled ones generated by volcanic eruptions. (scitechdaily.com)
The World Health Organization (WHO) confirmed that shocks and recover, its health system has continued its the blast caused damage to more than half of Beirut's slow decline and highlighted by events in 2020. (who.int)
Economic suffered a hattrick of simultaneous events during 2020 loss and physical damage were estimated to be US$ 8 bil- - the economic crisis, the Beirut blast and the COVID-19 lion according to the World Bank ( 8 ). (who.int)

High explosives that detonate generate blast waves. (wikipedia.org)
Blast injury is an increasing concern of Coalition Forces due to improvised explosives used during conflicts in Iraq and Afghanistan ( 1 ). (frontiersin.org)
This project investigates the behavior of blast waves from the detonation of high explosives in an underground mine. (cdc.gov)
Primary blast injury is organ and tissue damage caused solely by the blast wave associated with high-order explosives. (medscape.com)

The flow field can be approximated as a lead shock wave, followed by a self-similar subsonic flow field. (wikipedia.org)
HE detonate to produce a defining supersonic over-pressurization shock wave. (wikipedia.org)
Mach stem formation occurs when a blast wave reflects off the ground and the reflection catches up with the original shock front, therefore creating a high pressure zone that extends from the ground up to a certain point called the triple point at the edge of the blast wave. (wikipedia.org)
Blast waves cause damage by a combination of the significant compression of the air in front of the wave (forming a shock front) and the subsequent wind that follows. (wikipedia.org)
A blast wave travels faster than the speed of sound and the passage of the shock wave usually lasts only a few milliseconds. (wikipedia.org)
The shock wave of air radiates outward, producing sudden changes in air pressure that can crush objects, and high winds that can knock objects down. (atomicarchive.com)
An ex vivo model system is developed to introduce a blast wave, generated from a shock tube, directly to spinal cord tissue sample. (aps.org)
We felt a shock wave. (arabnews.com)
Not sure how small this was, but it definitely generated a shock wave strong enough (for) the house to shake. (arabnews.com)
Shock Waves , 28 (3), 627-630. (elsevierpure.com)
The shock wave was felt over 160 km away, and windows still rattled 320 km away. (amusingplanet.com)

A high-speed shadowgraph system is utilized to visualize the development of the blast wave and its interaction with tissue sample. (aps.org)
Understanding the temporal development of the blast-tissue interaction provides valuable input for modeling blast-induced neurotrauma. (aps.org)
To this end, we performed a computational fluid dynamics (CFD) analysis to better understand the mechanism of the blast shockwave interaction with head, as well as the effect of the helmet on the alteration of flow mechanics. (asme.org)
Two-dimensional explosion experiments were conducted to discuss the interaction between a blast wave and sand and show the mitigation effect of the sand on the blast wave. (elsevierpure.com)
The interaction of the blast wave with the sand/air interface causes multiple peaks in the blast wave, which are induced by successive transmissions at the interface. (elsevierpure.com)

We detected very weak acoustic signals in the hydrophone data, which was really surprising given the intensity of the eruption," said Gil Averbuch , a postdoctoral scholar at WHOI who studies how acoustic waves propagate in the ocean. (whoi.edu)
Upon release, these high pressure waves propagate rapidly and interact with human head and lead to severe traumatic brain injury (TBI). (asme.org)

Addressing the concerns surrounding blast injury for the military community is a pressing matter. (frontiersin.org)

The blast wave occurs when the explosion creates highly compressed air particles. (chasewiley.com)

BALTIMORE -- Marcio Leite's hat trick and the Wave defense contributed to the Milwaukee Wave defeating the Baltimore Blast 14-2 in Game 1 of the MISL Championship Series on Friday night at 1st Mariner Arena. (fox6now.com)
The Baltimore Blast defeated the Milwaukee Wave in the MASL Eastern Conference F inal round, taking the series' first two games. (maslsoccer.com)

When a nuclear weapon is detonated on or near Earth's surface, the blast digs out a large crater. (atomicarchive.com)

An intense blast wave can tear tissue. (msdmanuals.com)

Blast injuries are generally categorized as primary to quinary. (medscape.com)
The lungs, bowel, and middle ear are most susceptible to primary blast injuries (PBIs). (medscape.com)
In the blast periphery (walking-wounded zone), most casualties have non-life-threatening injuries and psychologic trauma. (msdmanuals.com)
Intestinal barotrauma is more common with underwater than air blast injuries. (medscape.com)

For large nuclear weapons, the range of intense direct radiation is less than the range of lethal blast and thermal radiation effects. (atomicarchive.com)
When a nuclear weapon explodes, it gives off four types of energy: a blast wave, intense light, heat, and radiation. (cdc.gov)
3. The intense heat may melt metal electrical components and blast molten droplets considerable distances. (cdc.gov)
A less intense blast can damage the eardrums, lungs, and abdomen. (msdmanuals.com)

Most damage comes from the explosive blast. (atomicarchive.com)

Blast waves also throw debris at very high speed that can injure any part of the body. (msdmanuals.com)

Their research shows how a combination of sorting the lunar soil and then blasting it with microwaves can create a landing pad for future rockets on the Moon - and save any surrounding buildings from being blasted by 10,000 kph dust particles. (universetoday.com)

Coral Blast Print // Dean McNelia Wave Series // surf. (deanmcnelia.com)
Coral Blast is a part of my wave series, inspired by flat spells. (deanmcnelia.com)

He was backed by an outstanding defensive performance by the Wave , who finished with 22 blocked shots, while goalkeeper Marcel Feenstra had 11 saves. (fox6now.com)

Now, calculations by Hokkaido University scientists in Japan have found that the atmospheric wave from the blast led to electron disturbances high in Earth's upper atmosphere. (scitechdaily.com)

For the most part, a nuclear blast kills people by indirect means rather than by direct pressure. (atomicarchive.com)
At least 14 people were killed and 33 others injured after an explosion at a mosque in eastern Afghanistan on Sunday, the latest in a wave of deadly attacks in the country in recent weeks. (cnn.com)
ESPN host Domonique Foxworth got a bit sociopolitical the other day, blasting fans of Buffalo Bills' quarterback Josh Allen as 'people with American flags and dogs and skull and crossbones. (theblaze.com)
In what appears to be a re-emergence of terrorism in the provincial capital, a powerful blast ripped through the crowded Anarkali market, killing three people and injuring 33 others here on Thursday. (dawn.com)
Police officers believed the explosion resembled the timed-device blast carried out in July 2013 at the Old Anarkali food street that had killed five people and injured dozens. (dawn.com)
As soon as the blast occurred, he saw two motorcycles and some shops up in flames and people running for shelter. (dawn.com)
Burchell Hayes, a traditional owner of the Puutu Kunti Kurruma people, said the blasting activity was just 11 metres from the two rock shelters. (abc.net.au)
In light of his stand against what blogs may or may not report about famous people, Rod Wave has found himself a sympathizer in the form of another popular rap-crooner. (hot991.com)
In a blast epicenter (kill zone), most people are dead or mortally injured. (msdmanuals.com)
People who have sustained blast injury to the lungs may have shortness of breath, cough (including coughing up blood), chest pain, rapid breathing, and wheezing. (msdmanuals.com)
People who have sustained a blast injury are evaluated for multiple trauma, including injury to the lungs and ears. (msdmanuals.com)

Accumulating evidence suggests that blast exposures can result in negative effects on the brain in absence of a medically diagnosable injury ( 2 - 5 ). (frontiersin.org)
The effects of these sub-concussive blast exposures are gaining attention in research and military communities concentrating on repeated exposures, deteriorated performance, and long-term health consequences. (frontiersin.org)
The nature of low to moderate level blast exposure, or repeated exposures, inherently captures individuals with no detriment to performance or health, as well as those with some mild deteriorations. (frontiersin.org)

An explosion creates a blast wave. (msdmanuals.com)

Former Interior Minister Gideon Sa'ar (Likud) blasted the government's inability to defeat the ongoing terror wave. (israelnationalnews.com)

In fluid dynamics, a blast wave is the increased pressure and flow resulting from the deposition of a large amount of energy in a small, very localised volume. (wikipedia.org)

Whenever a blast wave reflects off of a surface, such as a building wall or the inside of a vehicle, different reflected waves can interact with each other to cause an increase in pressure at a certain point (constructive interference) or a decrease (destructive interference). (wikipedia.org)

The scientists also compared the magnitude of the ionospheric wave generated by the Beirut blast to similar waves following natural and anthropogenic events. (scitechdaily.com)
They found that the wave generated by the Beirut blast was slightly larger than a wave generated by the 2004 eruption of Asama Volcano in central Japan, and comparable to ones that followed other recent eruptions on Japanese islands. (scitechdaily.com)
The energy of the ionospheric wave generated by the Beirut blast was significantly larger than a more energetic explosion in a Wyoming coal mine in the USA in 1996. (scitechdaily.com)
The Beirut blast was equivalent to an explosion of 1.1 kilotons of TNT, while the Wyoming explosion was equivalent to 1.5 kilotons of TNT. (scitechdaily.com)
The total electron content disturbance of the Wyoming explosion was only 1/10 of that caused by the Beirut blast. (scitechdaily.com)
The response to the Beirut blast was the first funds, that fact is "private hospitals are owed US$ 1.3 bil- weakening in controlling the COVID-19 pandemic. (who.int)

Guan Xiang, who lives 7km away from the blast site, told Reuters. (rt.com)

A simultaneous blast-wave fit to particle yields and elliptic flow (v2) measured as a function of transverse momentum in Pb-Pb collisions at energies available at the Large Hadron Collider (LHC) is presented. (isoquant-heidelberg.de)

It not only sent atmospheric waves that circled the globe several times, but thrust more than a trillion grams of water vapor into the stratosphere and sent an ash cloud 35 miles into the mesosphere. (whoi.edu)
Hurricane-force winds blew at the edge of space, while atmospheric pressure waves injected so much energy into the ocean below that meteotsunamis formed around the world. (whoi.edu)

Therefore, persons or objects behind a large building are not necessarily protected from a blast that starts on the opposite side of the building. (wikipedia.org)
Moreover, development of an amplified pressure region at the opposite side of the incoming blast waves, referred to as the underwash effect of helmets has raised some concerns. (asme.org)

Primary blast injury on central nervous system is responsible for many of the war related casualties and mortalities. (aps.org)
Our primary results revealed that the change of the flow momentum inside the helmet gap, the reunion of the blast flow inside the gap as well as the development of adverse pressure gradient (and hence recirculating flow region) at the rear side of the head are the major reasons leading to this adverse phenomenon. (asme.org)

The blast wave creates an area of high pressure rapidly expanding outwards at high velocities creating very strong winds. (chasewiley.com)
This is an image of a blast wave, as it expands rapidly! (chasewiley.com)

The blast was caused by a bomb placed in the mosque, rather than by a suicide bomber, Khost's Chief of Police Basir Bina told CNN. (cnn.com)
Moscow claimed a truck bomb caused the blast but the speaker of Crimea's Kremlin-backed regional parliament accused Kyiv of being behind the explosion. (mirror.co.uk)
LAHORE: Police personnel and bomb disposal units inspect the blast site. (dawn.com)
Police and other law enforcement agencies initially declared it a gas cylinder explosion, but later investigations confirmed it was a bomb blast. (dawn.com)
radiologic or biological contamination), the surrounding environment (eg, the presence of intervening protective barriers), the distance between the victim and the blast, the delivery method if a bomb is involved, and any other environmental hazards. (medscape.com)

The magnitude of the blast effect is related to the height of the burst above ground level. (atomicarchive.com)
The recent magnitude-four earthquake some 60km west of Mayo - close to the Corrib gas field and Providence Resources' prospects on the Slyne Basin - gives added significance to his research, as his own work has been central to a "storm wave versus tsunami" debate. (shelltosea.com)

Unique patterns of injury are found in all blast types. (medscape.com)
Burn injury facts: arc flash/blast. (cdc.gov)

A spokeswoman for ESB said that the applications were the first step that the energy firm had to take to explore the potential of the sites for wave energy. (shelltosea.com)

In physics, interference is the meeting of two correlated waves and either increasing or lowering the net amplitude, depending on whether it is constructive or destructive interference. (wikipedia.org)

Lahore Deputy Inspector General (Operations) Dr Muhammad Abid Khan told Dawn that it seemed the explosive material was planted under a cart or on a motorbike that were found completely damaged at the blast site. (dawn.com)
Though I received minor wounds on my leg, but some moving scenes at the blast site terrified me," said another injured person, Haider Sultan. (dawn.com)
A critically injured middle-aged man was also seen crying for help at the blast site. (dawn.com)
The blasting of the sites was one of the worst destructions of an archaeological site in recent memory according to Peter Stone, the UNESCO chair in Cultural Property Protection and Peace at Newcastle University in the UK. (abc.net.au)
Mr Wyatt said his office received a call at the 11th hour, a few days before Rio Tinto blasted the site, asking the Federal Government to step in and prevent it. (abc.net.au)

First-degree, second-degree and third-degree burns can occur at distances of five miles away from the blast or more. (atomicarchive.com)
Electricity can cause two types of burns: electrical burns from direct contact with current and thermal burns from arc flashes and blasts. (cdc.gov)

Quantifying blast characteristics from low to moderate levels during operational training and accounting for non-blast factors that affect cognitive performance is complex. (frontiersin.org)

Blast waves have properties predicted by the physics of waves. (wikipedia.org)

Scientists use sophisticated mathematical models to predict how objects will respond to a blast in order to design effective barriers and safer buildings. (wikipedia.org)
A global network of underwater microphones, known as hydrophones, record and measure these waves, giving scientists like Averbuch a read on the ruckus they cause in the ocean. (whoi.edu)

In simpler terms, a blast wave is an area of pressure expanding supersonically outward from an explosive core. (wikipedia.org)

Blast damage to Stores, water heaters, furnaces, electrical circuits or gas lines would ignite fires where fuel is plentiful. (atomicarchive.com)
This initial blast wave causes most of the damage. (chasewiley.com)
Unleashes a wave of flame, inflicting Fire damage to nearby enemies and reducing their movement speed for 6 sec. (cavernoftime.com)

Blast, thermal radiation, and prompt ionizing radiation cause significant destruction within seconds or minutes of a nuclear detonation. (atomicarchive.com)
Since the thermal radiation travels at roughly the speed of light, the flash of light and heat precedes the blast wave by several seconds, just as lightning is seen before thunder is heard. (atomicarchive.com)

The aftermath of two blasts that rocked China's port city of Tianjin looks like a scene from a movie about a zombie apocalypse, nuclear war or even alien attack. (rt.com)

Since the volcano is surrounded by underwater features, the acoustic waves coupled directly from the volcano were blocked, and did not travel far. (whoi.edu)

That debate has focused on the precipitous cliff-top location of Dún Aonghasa on Inis Mór, and specifically on whether the dún or cashel was originally built on an inland location, and was sliced as a result of tsunami-like waves. (shelltosea.com)
However, Williams contends that the giant Aran boulders are more likely to have been cast up by storm waves than by an actual tsunami, as outlined in a 2010 paper published by the Irish Journal of Earth Sciences, where he analysed wave impact on vertical obstacles. (shelltosea.com)

The blast wave is followed by a blast wind of negative gauge pressure, which sucks items back in towards the center. (wikipedia.org)
Terminesi went close again early in the second quarter, hitting the crossbar on a well-worked move, and the Blast hit back as Ricardinho scored off a good pass from Machel Millwood to make it 3-2. (fox6now.com)
Content: Stendal Blast strikes back to say farewell! (side-line.com)

The Wave then remained content to protect their lead throughout the fourth quarter, with Josh Rife capping the performance with 2:03 to play as he scored a 3-pointer into an empty net from his own half. (fox6now.com)

And even when the Blast found a way through, Feenstra was on hand to save, denying Shaun David from close range with just over five minutes gone in the third quarter to maintain the five-point lead. (fox6now.com)
We found that the blast generated a wave that traveled in the ionosphere in a southwards direction at a velocity of around 0.8 kilometers per second," says Hokkaido University Earth and Planetary scientist Kosuke Heki. (scitechdaily.com)

Are you ready for the next wave? (preppernews.online)

The compressible, turbulent blast flow was simulated in ANSYS CFX by releasing the air from a high-pressure domain into the low-pressure one (at ambient pressure). (asme.org)
2. A high-amperage arc can produce a pressure wave blast with a force of up to 1000 pounds. (cdc.gov)

The blast wave shattered windows in nearby offices and apartment blocks, and the impact was felt up to 10km away. (rt.com)

http://www.sbpost.ie/news/ireland/esb-to-develop-three-wave-energy-proje. (shelltosea.com)

The major problem with using helmets under blast loading is the entrapment of blast shockwaves inside the helmet gap and its reflection from the interior of the helmet's shell. (asme.org)

Hearing loss may also result from the blast. (cdc.gov)

Professor Stone, who is an expert on the significant cultural destruction during the Iraq war, compared the blast to the destruction of sacred artefacts by the Islamic State in recent years. (abc.net.au)

Anatomy34

Organisms5

Diseases33

Chemicals and Drugs44

Analytical, Diagnostic and Therapeutic Techniques and Equipment53

Psychiatry and Psychology3

Phenomena and Processes68

Disciplines and Occupations8

Anthropology, Education, Sociology and Social Phenomena3

Technology, Industry, Agriculture3

Humanities1

Information Science21

Named Groups1

Health Care15

Overpressure8

Propagation In Underground Mines1

Sound waves6

Explosions4

Gravitational waves3

20212

20203

Explosives4

Shock11

Interaction5

Propagate2

Surrounding blast injury1

Occurs1

Baltimore Blast2

Crater1

Tissue1

Injuries4

Intense4

Explosive blast1

Debris1

Particles1

Coral Blast2

Goalkeeper1

Earth's1

People11

Exposures3

Explosion creates1

Defeat1

Fluid dynamics1

Interact1

Beirut6

Reuters1

Simultaneous1

Atmospheric2

Opposite side2

Primary2

Rapidly2

Bomb5

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Injury2

Explore1

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Site5

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Moderate1

Physics1

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Outward1

Damage3

Thermal2

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Back3

Content1

Found2

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Destruction1