Sentences with phrase «at cell junctions»

Not exact matches

The second hypothesis proposes that the trigger signal spreads from cell to cell through gap junctions, specialized intercellular connections that directly link two cells at points where they touch.

«In theory, conventional single - junction solar cells can only achieve an efficiency level of about 34 percent, but in practice they don't achieve that,» said study co-author Paul Braun, a professor of materials science at Illinois.

The study is titled, «Transitional basal cells at the squamous - columnar junction generate Barrett's oesophagus.»

«We have discovered that by inserting a very thin film of gallium arsenide into the connecting junction of stacked cells we can virtually eliminate voltage loss without blocking any of the solar energy,» says Dr. Salah Bedair, a professor of electrical engineering at NC State and senior author of a paper describing the work.

«In this tunnel junction, holes from the silicon solar cell recombine with electrons flowing from the perovskite solar cell using quantum mechanical tunneling,» said Jonathan Mailoa, a graduate student at MIT and co-author of the report, in an email.

The discovery means solar cell manufacturers can create stacked solar cells that can handle high - intensity solar energies without losing voltage at the connecting junctions, potentially improving conversion efficiency.

This discovery means that solar cell manufacturers can now create stacked cells that can handle these high - intensity solar energies without losing voltage at the connecting junctions, thus potentially improving conversion efficiency.

At the time, Bell Labs was developing liquid - junction photovoltaics (a type of solar cell that employs liquid electrolytes), which seemed like a nice fit for her electrochemical training.

At the cellular level, learning and memory require continuous readjustment of the strength of synaptic junctions — the functional connections between nerve cells.

By interacting with the actin cytoskeleton, underneath the cell outer membrane, and other structural proteins of the tight junctions, Alix ensures the formation of the actomyosin - tight junction complex at a specific position between adjacent cells.

Using colorfully labeled antibodies to light up the new protein under their microscopes, they found that it was present where Listeria entered cells and also present at adherens junctions between epithelial cells.

The bacterium will be a useful tool for studying the complex cellular events that occur at cell - to - cell junctions,» she added.

Zyxin controls migration in epithelial — mesenchymal transition by mediating actin - membrane linkages at cell — cell junctions.

Limbal epithelial stem cells (LESCs) reside in the basal layer of the limbal area, at the vascularised junction between the corneal and conjunctival epithelium.

After a brief period of co-stimulation (~ 1 hr), starved cells begin to pair at their anterior ends to form a specialized region of membrane called the conjugation junction.

At this stage animals are large enough such that the cell bodies of motor neurons in the ventral nerve cord are well spaced, making it less ambiguous in deciding if presumptive gap junction puncta are associated with a particular motor neuron.

Publishing on December 1st in Neuron, researchers used fruit fly larvae to uncover the presence of a molecular pathway that responds to nutrient scarcity and lowers synapse activity at the junctions between neurons and muscle cells.

The observations that astrocytes and even non-neural cells (J Cell Sci 2004, J Lipid Res 2007) store and can release neurotransmitter amino acids in a way resembling synaptic release, and that oligodendrocytes have NMDA type glutamate receptors (Nature 2005), together with findings that glutamate and other neuroactive substances can be co-released from nerve endings (Eur J Neurosci 2003, Molec Neurosci 2004, Cereb Cortex 2009a), including at the neuromuscular junction (Neuroscience 2007b), suggest novel ways of intercellular communication and potential drug targets.

During the normal digestion process the tight junctions stay closed forcing all molecules to effectively be screened and only pass into the blood stream through the mucosa cells (think of them like bouncers at the front of a classy bar).

More generally excess Omega 6 is associated with compromised digestion, inflammation and decreases in gut cell junction integrity, so excess Omega 6 LA leading to diminished absorption makes sense at a more general level.

From here, the impulse takes a brief pause at another node of specialized cells call the atrioventricular (or AV) node located at the junction where the atrial septum, ventricular septum, mitral valve, and tricuspid valve meet.

Loss of these cartilage cells deep in the cartilage layers leads to formation of a defect at the junction between cartilage and bone.

Myasthenia gravis is caused by a reduction or deficiency in the number of cellular receptors for a specific neurotransmitter, acetylcholine, at the junctions between nerve endings and skeletal muscle cells.

(Alternately, you can make arrangements with us to send a taxi, but do it before you leave Dangriga because there is no cell phone service at the junction!

3) At the poles, cold air within the Polar Cells descends then travels equator - ward and rises at the junction with the Ferrel Cells at the temperate latitudes around 60 degreeAt the poles, cold air within the Polar Cells descends then travels equator - ward and rises at the junction with the Ferrel Cells at the temperate latitudes around 60 degreeat the junction with the Ferrel Cells at the temperate latitudes around 60 degreeat the temperate latitudes around 60 degrees.

And likewise it is responsible for high precipitation where the air rises at the junction with the Ferrel Cells at latitudes 60 degrees.

Lining the bellows shields with triple junction cells, energy production could be significant (up to about 15 % of the CSP capacity) but the LCOE was too high at about 15 cents per kWh.

The triple junction cells applied to the heat shields of the central receiver CSP test site were SolAero CTJ cells, designed for concentrated light up to 1500 suns, with efficiencies up to about 39 % efficient (at around 400 suns).