Underground experiments simulate. Medical search. Frequent questions

In the late 1950s, Livermore scientist Cecil "Chuck" Leith developed one of Livermore's first-ever numerical models capable of simulating the hydrodynamic and radiative processes in a thermonuclear explosion. (llnl.gov)
We describe and characterise underground formations and reservoirs, perform laboratory analyses and tests, build realistic and physically consistent three-dimensional geological models and simulate underground flow processes to supply the basis for informed decision-making and to ensure more efficient, responsible and environmentally friendly practices in all underground/subsurface operations. (rentalmobiljkt.com)
The experiments suggest that the barrel cortex processes signals received from several whiskers to build an overall picture of the locations and shapes of objects. (elifesciences.org)
T2GGM-FLAC was developed as a numerical tool capable of simulating these processes. (geofirma.com)
The Sandia-led GDSA framework is a computer modeling system designed to simulate the coupled processes affecting radionuclide mobilization and transport in deep geologic repositories and to perform forward propagation of uncertainty calculations. (ans.org)
The crater processes also entail the formation of underground hot springs in which sulphur bacteria can thrive and new life forms can develop. (lu.se)

Using mathematical models and laboratory experiments with rocks, the scientists conducted simulations based on evidence gathered from the section of the San Andreas Fault extending up to 36 miles north of - and 16 miles beneath - Parkfield. (scitechdaily.com)
During the fall of her junior year, Shih began working with graduate student Christopher Browne to investigate the flow of polymers, using computational models and laboratory experiments to simulate the varied geometries and pore sizes of rocks in groundwater aquifers. (princeton.edu)
In situ experiments are often used to confirm at a larger scale ('validate') these laboratory experiments [PUT-1993] and mostly have a demonstration purpose. (sckcen.be)

Researchers have made significant progress through experiments or numerical simulations [ 1 - 5 ]. (hindawi.com)
This paper describes two quarter-scale experiments (1.4 m diameter) and associated numerical analyses on granular backfill engineered barrier systems in support of the Yucca Mountain Project for the potential repository. (onepetro.org)

In this week's family science spotlight, kids explore how the passage of water through underground layers can result in storages of groundwater that are surprisingly clean! (sciencebuddies.org)
How does this model simulate what really happens to groundwater in the world? (weebly.com)
This lab simulates the cleanup of coppper-contaminated groundwater with mustard plants. (usf.edu)
A leaking underground storage tank (LUST) at a gas station was discovered to be contaminating area soils and groundwater. (usf.edu)

In fact, Livermore's climate models trace their origins to the Laboratory's initial development of codes to simulate nuclear weapons. (llnl.gov)
Even in the Laboratory's early days, researchers understood that the same computational approaches for simulating nuclear weapons could be applied to better simulate evolution of the weather and for applications such as tracking releases of radioactive and other hazardous materials. (llnl.gov)
Nuclear waste has to be deemed safe for underground disposal for hundreds of thousands, or even millions, of years. (cam.ac.uk)
I start my experiments by making powder mixtures to replicate common ingredients in nuclear fuel and press it into small pellets about 5 mm across. (cam.ac.uk)

Here he talks to Muriel Cozier about how the world's first experiment to simulate a CO2 leak from underground storage in a marine environment will go a long way toward improving our understanding of a series of complex interactions. (plymsea.ac.uk)
For this study, the researchers relied on an experiment that started in 1987-currently the world's longest-running field experiment on how rising CO 2 impacts plants. (phys.org)

For three decades, researchers have built machines to simulate the conditions of a fault by pushing and twisting two discs of rock against one another. (wraltechwire.com)
Researchers twist rock discs against one another under large amounts of pressure at high speeds to simulate what happens during earthquakes at fault lines. (wraltechwire.com)
After running all of their simulations, the researchers found that their new model accurately predicts the drop in friction associated with the entire range of fault speeds from experiments on all available rock types including halite, silicate and quartz. (wraltechwire.com)
The Einstein-Elevator will be available to researchers around the world for their experiments. (hannover.de)

That computational power offers unprecedented insight into how the physical world works, providing details about phenomena that would be infeasible to study with physical experiments. (llnl.gov)

students can explore aquifers and filtration with simulated "dirty water" and model collection bins. (sciencebuddies.org)
In this week's family-friendly science activity, students experiment to see how the process of water passing through different layers of soil result in filtered water that is then stored in underground layers called aquifers . (sciencebuddies.org)
Shih's thesis focused on specially formulated chain-like molecules called polymers that can help flush contaminants from hard-to-reach crevices in underground aquifers. (princeton.edu)

Shih built a device that allowed her to inject a stream of dye into the simulated rock along with the polymer solution - a way to determine how well a polymer might work in conjunction with another type of material to pick up pollutants. (princeton.edu)
In particular, considering the sudden encounter with water-rich layer during the progress of the project, or the sudden underground water gushing that causes the slag of the screw machine to gushing water and sand, it is added how to use the diluent of polymer when simulating the accumulation of water in the soil bunker. (balsamlaboratory.net)

Each of the labs in the elaborate underground facility has a little cast of characters doing a different futuristic experiment. (blogspot.com)
The wetland is home to several futuristic experiments, where scientists simulate the climate of 2100. (phys.org)

Mars has in-situ resources, such as underground water, Martian soil, and ore, which could be used by colonists. (wikipedia.org)
It only considers in situ experiments performed in the Hades URF aimed to determine or verify the value of the transport parameters in Boom Clay. (sckcen.be)
For practical reasons (flexibility, cost, …), the transport parameters of a tracer are mostly determined from migration experiments performed in the laboratory, where the in situ conditions are simulated. (sckcen.be)
distributed in the underground, the accurate in-situ measurement should be carried out by using advanced tools such as the robot or remote control method. (123deta.com)
In situ identification of high vertical stress areas in an underground coal mine panel using seismic refraction tomography. (123deta.com)

It was found that the results of the simulated combinations of the crack propagation path and initial fracture toughness change law are consistent with the test results. (hindawi.com)
and the consistent 50° - 60°F found only 10 feet underground can heat and cool buildings and communities of all sizes. (nrel.gov)
Restore the natural moisture content of the slag to ensure that the slag sample experimented is consistent with the one on-site. (balsamlaboratory.net)

We will discuss the comparison between our experiments and LB simulations results, which reveal the rate-limiting transport mechanismunder different flow conditions. (aiche.org)

Even though elevated CO 2 contributes to sea-level rise , it also enhanced the marsh's ability to accrete vertically during the early years of the experiment," said Don Cahoon, a coauthor and research ecologist, emeritus, with the U.S. Geological Survey. (phys.org)

The primary objective was to conduct a comparative evaluation of the lighting technologies based on the visual performance of 36 human subjects in a simulated underground mine environment. (cdc.gov)
There are almost no limits to the imagination," says Alexander Wanner, project participant and managing director of HITec, "after all, it is even possible to conduct experiments with a so-called Bose-Einstein condensate in microgravity - close to absolute zero degrees Celsius. (hannover.de)
In this laboratory, we conduct experiments related to ground and structures. (shimz.co.jp)

This article describes experiments simulating rib scaling from an elevated bucket to examine force generation and electromyographic responses using two types of scaling bars at five target heights ranging from floor level to 176 cm. (cdc.gov)

Field experiments of the ISS technology have been carried out at underground coal mines. (inderscience.com)
The experiments were done in a simulated underground coal mine diesel fuel storage area under three ventilation conditions: no ventilation, natural ventilation, and forced ventilation and with two preburn times for the no ventilation condition--30 sec and 1 min. (cdc.gov)
Application of seismic velocity tomography in underground coal mines: a case study of Yima mining area, Henan, China. (123deta.com)
Case study of seismic hazard assessment in underground coal mining using passive tomography. (123deta.com)

Roof and rib conditions were observed and assessed in 33 underground stone mines. (cdc.gov)
Earthquakes originate along fault lines deep underground where extreme conditions can cause chemical reactions and phase transitions that affect the friction between rocks as they move against one another," said Hadrien Rattez, a research scientist in civil and environmental engineering at Duke. (wraltechwire.com)
We have shown", says project manager and engineering scientist Christoph Lotz, "that we can control the linear motors used in roller coaster construction so precisely that they can compensate for the air resistance of the gondola and produce conditions of free fall for the experiment inside our drop tower. (hannover.de)
of the Earth's gravitational force in the experiments, but we will also be able to simulate different acceleration profiles and thus different gravitational conditions - such as on the Moon or Mars, for example. (hannover.de)
They range from the plausible (a space mirror that blows stuff up) to the campy (a sexy couple who wear magnetic leotards and dance around trying to simulate zero gravity conditions). (blogspot.com)
But in the lab I try and simulate how waste decays under a range of controlled conditions, asking questions like: What will happen if water breaks through the multiple barriers while the fuel is still very radioactive? (cam.ac.uk)
In this work, we analyzed the performance of the foaming agent NPL-10 in terms of foam height and half-life under various conditions of temperature, pH, salinity, and oil content by orthogonal experiments. (degruyter.com)
There are now fewer for mosquito control under simulated and the densities of larvae and adults adulticides available than there have field and actual field trial conditions emerging were calculated and record been for the last 20 years [3]. (who.int)

In complex events with numerous cosmic-ray and beam background particles, the simulated reconstruction and identification efficiency for triggered test-beam particles is above 80% for the majority of particle type and beam momentum combinations. (nsf.gov)

The video of the Einstein-Elevator in operation (link: https://www.hitec.uni-hannover.de/en/large-scale-equipment/einstein-elevator/firstflight! (hannover.de)
The behavior of actual ground and structures can be simulated in small-scale models by applying centrifugal force. (shimz.co.jp)
The Pilot Scale (?fi scale) experiments described here are intended to develop an engineering assessment of the viability of key engineered barrier components for use at YMP. (onepetro.org)
The first two Pilot Scale experiments are (1) a capillary barrier consisting of a fine granular material overlying a coarse granular material, and (2) a standard coarse granular backfill. (onepetro.org)
We can't actually take this big, full million-year simulation and compare it to a real-world experiment of the same scale. (ans.org)

They then set up three water collection bins using popcorn kernels, corn meal, and corn starch to simulate different kinds of soil. (sciencebuddies.org)

Large-N array observations of injection-induced seismicity in northern Oklahoma: the LASSO experiment.September 18-22, 2017. (geodynamics.org)
Another problem posed by steam injection is that steam can seriously damage the underground well structure. (degruyter.com)
To simulate injection and extraction, gas pressure (N 2 ) is applied and released on both ends. (copernicus.org)

The virtual workshop, held this month, is being conducted by members of an international collaboration called Development of Coupled Models and their Validation against Experiments, or DECOVALEX . (ans.org)
The GDSA framework is built on two Sandia software packages: PFLOTRAN, an open-source software that models how chemicals react and how liquids and gases flow underground, and Dakota, which specializes in uncertainty sampling and sensitivity analysis. (ans.org)

Under this effort, water mist is being evaluated for suppressing underground mine fires, such as those in diesel fuel storage areas. (cdc.gov)
The water collects or pools in the final layer, resulting in an underground storage called an aquifer. (sciencebuddies.org)
How does water get underground? (weebly.com)
Where is water stored underground? (weebly.com)
Based on this experiment, what can happen to a drop of water after it falls on the ground? (weebly.com)
2. This model simulates what happens to real ground water because real ground water does exactly what happened in our experiment. (weebly.com)
3. Based on this experiment, when a drop of water falls onto the ground it either soaks into the ground orb stays at the top. (weebly.com)
The purpose of our experiment and the improvement plan are to adjust the fluidity, water resistance and flow plasticity of the slag. (balsamlaboratory.net)
Test solutions for orthogonal experiments were prepared using deionized water. (degruyter.com)
Concentrations of other ions were simulated by a water preparation and salinity calculation software. (degruyter.com)
Although many contaminants have low solubility in water, they can adsorb on mobile colloids and travel with underground water flow over 80 m/year. (aiche.org)
The tests involve application of dyed water as a constant line infiltration source along the top of the test set-up, monitoring water movement through the test, and measuring water exiting the experiments. (onepetro.org)
The plain backfill test was operated for only approximately 34 days as downward infiltrating water quickly contacted the simulated waste package. (onepetro.org)
The HG-A experiment examined gas and water flow in the excavation damage zone (EDZ) of a tunnel in a claystone formation at the Mont Terri Rock Laboratory. (geofirma.com)

Residents drew and constructed aquaponic and aeroponic growing systems, underground mushroom farms, a field of windmills and a wetland pond. (friches.fr)

On the segment of the San Andreas Fault near Parkfield, California, underground excitations - beyond the depths where quakes are typically monitored - lead to instability that ruptures in a quake. (scitechdaily.com)
They simulated the dynamics of fault activity in the deep Earth spanning 300 years to study a wide range of rupture sizes and behaviors. (scitechdaily.com)

The Energy Exascale Earth System Model (E3SM) is one of the first to simulate the movement and evolution of glaciers and ice sheets. (llnl.gov)
For indirect measurement in the case of underground utilities, validation in a test site with wellknown model answers is essential to train competent operators and analysts, understand the limitation and accuracy of GPR, and establish survey procedures. (researchgate.net)
A new experiment pulled off the most precise measurement of an electron's self-generated magnetic field-and the universe's subatomic model is at stake. (listnr.com)
The scenario shows that the simulated dose rate is about 5 times lower than that calculated using the empirical formulae (Daresbury model). (lu.se)

We also used the Lattice Boltzmann (LB) method to simulate the flow field and colloidal transport in the media. (aiche.org)

To meet the demand in times of energy shortages from sun and wind, this effect can be compensated by extracting and using gas from underground gas storages. (copernicus.org)

The study from the emergent field of earthquake physics looks at temblor mechanics from the bottom up, rather than from the top down, with a focus on underground rocks, friction, and fluids. (scitechdaily.com)
Simulated field trials were done in artificial pools and field trials were carried out in 2 villages in an indigenous malaria area using WHO-recommended methods. (who.int)

Assessment of long-term stability of an abandoned room and pillar underground lignite mine. (123deta.com)

In response, resource exploration has turned to deep underground areas. (hindawi.com)
Pandora is the primary event reconstruction software used at ProtoDUNE-SP, a prototype for the Deep Underground Neutrino Experiment far detector. (nsf.gov)

To predict and verify the test results, ABAQUS was used to simulate the test process. (hindawi.com)
Thus, there may be errors in the results of pure experiments. (hindawi.com)
Using the centrifuge, we are able to simulate liquefaction, slope failure, and other ground-related disasters, and based on the test results, we develop countermeasures against them. (shimz.co.jp)

For about the first two decades of the experiment, plant growth in the higher CO 2 chambers flourished. (phys.org)

These experiments can reach pressures of up to 1450 pounds per square inch and speeds of one meter per second, which is the fastest underground rocks can travel. (wraltechwire.com)
In these experiments, the surface of the rocks either begins to turn into a sort of gel or to melt, lowering the coefficient of friction between them and making their movement easier. (wraltechwire.com)
Construction activities will likely increase the permeability of rocks near underground openings due to excavation damage. (geofirma.com)

Using a commercial finite element method (FEM) modelling software, both transmission and reflection tests were simulated. (inderscience.com)

The system simulated the contact the whiskers would have with the walls of a winding corridor. (elifesciences.org)
It simulates abandoned drillings and consists of a 2 m long cemented steel casing with an autoclave system. (copernicus.org)
After pressure variations between 0 bar and 60 bar, tightness of the system decreased in every experiment, which leads to an increased modelled annular gap width. (copernicus.org)

An overview of all experiments (including those having another aim than measuring the migration parameters) performed in HADES can be found in [BASTIAENS-2006]. (sckcen.be)
Using this approach, we measured and simulated colloidal transport trajectories and extracted key parameters such as the breakthrough curve, effective retention, and entrapped colloids distribution. (aiche.org)

This report presents an overview and details of all migration experiments conducted over a period of ~20 years in the HADES Underground Research Facility (URF). (sckcen.be)

In this photo from summer 2019, Shih preps a small plastic apparatus containing material that simulates a porous rock environment. (princeton.edu)
In August 2020, the Swiss Federal Department of the Environment, Transport, Energy and Communications (DETEC) published a highly informative and comprehensive report entitled Risk minimisation of electric vehicle fires in underground traffic infrastructures which produced evidence that burning electric vehicle batteries change the chemical hazard situation in underground traffic infrastructures. (fire-magazine.com)

We create a repetition rate for experiments of about 300 per day, since we don't have to evacuate the entire tower for every experiment, unlike conventional drop towers", explains Professor Ludger Overmeyer, head of the Institute of Transport and Automation Technology and one of the two initiators of the Einstein-Elevator. (hannover.de)

it also has an extensive range of facilities for testing, experiment and safety training activities. (goldtrails.com.au)

Teaching in virtual realities, simulating tasks in mining and tunnelling, is safe and experience-rich, and once you master a certain degree of challenges, you are really ready for the real world. (identecsolutions.com)

To see external hands-on activities and experiments, click here . (usf.edu)

The effect was even more powerful underground: High CO 2 triggered about 35% more root growth. (phys.org)

Should electrically driven vehicles be restricted to "safe areas" in enclosed and underground car parks? (fire-magazine.com)

Anatomy4

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Chemicals and Drugs30

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Disciplines and Occupations1

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