AIDS is diagnosed when the CD4 count falls below 200 cells per
cubic millimeter of blood.
«In
a cubic millimeter of brain there is about two terabytes of image data,» Lichtman says.
The only way we can limit the exposure is to just deliver to
a cubic millimeter of the brain, and in order to do that, you have to have extremely small cannulas,» Cima says.
Shaving
a cubic millimeter of brain tissue would yield a petabyte of data.
Normally there are 500 to 1,200 of these cells per
cubic millimeter of blood.
Not exact matches
If each solar system were the size
of a grain
of sand
of one
cubic millimeter, they would fill 100 000 one liter coke bottles.
A paper in Science Advances by Rice engineers Ashok Veeraraghavan, Jacob Robinson, Richard Baraniuk and their labs describes a wide - field microscope thinner than a credit card, small enough to sit on a fingertip and capable
of micrometer resolution over a volume
of several
cubic millimeters.
For detecting a single tumor, the volumetric accuracy was 1.2
cubic millimeters, a minute fraction
of a
cubic inch (0.00007), which Dr. Gonzalez called «extremely accurate.»
In a mouse model
of triple - negative breast cancer, mice injected with cancer cells that over-express ZMYND11 had tumor volumes
of less than 50
cubic millimeters while control mice and those injected with cells expressing ZMYND11 deficient for binding to the methyl group had tumor volumes ranging from 150 to 400
cubic millimeters at eight weeks.
Ultimately, MICrONS aims to map every neuron and synaptic connection within a 1 -
cubic -
millimeter chunk
of tissue from the mouse visual cortex, and use those detailed brain connection maps to design computer architectures able to perform tasks that are easy for a brain but out
of reach for artificial intelligence.
He hopes to learn more about the brain's wiring in his next project: a map
of an entire
cubic millimeter.
That scale, Seung suspects, is about one
cubic millimeter: a pinch
of brain tissue that could sit atop the period at the end
of this sentence.
MRI scans can capture the entire brain, but they can get down to a resolution
of only a few
cubic millimeters, not nearly fine enough.
The size
of the specimens he worked with might seem minuscule to an outsider — about 1
cubic millimeter, comparable in size to a coarse grain
of sand — but to Agee, such a speck is a world in miniature.
«That's how you can go from a lab experiment a
cubic millimeter in size to saying sweeping things like, «The whole process
of differentiation and core formation wrapped up very fast in geologic terms, taking only a few million years,»» he says with a lingering flutter
of amazement in his voice.
In addition, the task
of injecting atoms into the trap seemed daunting because the volume
of the trap would only be 0.001
cubic millimeter.
Every standard deviation increase in the inflammation score was also associated with a hippocampus volume that was 110
cubic millimeters smaller and the volume
of other areas affected by Alzheimer's disease was 532
cubic millimeters smaller.
Yet, even at its highest spatial resolution (1
cubic millimeter), each voxel — the smallest distinguishable element
of a 3D object — contains tens
of thousands
of neurons.
He notes that a typical brain scan may focus on an area
of about 1
cubic millimeter (0.00006
cubic inch).
The sum
of metastatic tumor volume was first calculated from four lobes
of lungs per animal (see Materials and methods), and the lung metastasis per group is presented as tumor volume (
cubic millimeters).
That cylinder in the middle
of the image is the tiny,
cubic millimeter - sized chunk
of mouse neocortex studied as a test case for nanoscale brain imaging technology
That cylinder in the middle
of the image is the tiny,
cubic millimeter - sized chunk
of mouse neocortex studied as a test case for nanoscale brain imaging technology (Credit: Harvard University)
By applying the technique known as voxelation, developed by collaborators at UCLA, spatially defined regions (1
cubic millimeter in size)
of the mouse brain can be characterized to develop three - dimensional (3D) relationships between cells and molecular networks.
A human brain has something on the order
of a million
cubic millimeters, which means you'd need around two million terabytes to store a map
of its wires.
Between April 2002 and April 2006, GRACE data uncovered ice mass loss in Greenland
of 248 ± 36
cubic kilometers per year, an amount equivalent to a global sea rise
of 0.5 ± 0.1
millimeters per year.
A study last year showed that between April 2002 and February 2009 the Greenland ice sheet lost 385
cubic miles
of ice, adding approximately 0.5
millimeters of sea - level rise every year.
If all 22.6 million
cubic kilometers
of freshwater stored underground reached the oceans, sea level would rise 204 feet (62,430
millimeters).
Ice sheet mass decreased at 152 ± 80
cubic kilometers
of ice per year, equal to 0.4 ± 0.2
millimeters of sea level rise per year.
Each year Greenland loses some 51
cubic kilometers
of ice, enough to annually raise sea level 0.13
millimeters.