Tag: "ions" at biology news
Inherited Depression Linked To Shortage Of Cells In Brain Region
...ells called glia. These housekeeping cells recycle ions
and chemicals thatcome out of neurons. They also respond to the stress hormone cortisol and toserotonin, which is depleted in depression. Using a larger number of tissue samples from the Stanley Foundation inBethesda, Md., Öngür and P...
Fall Meeting: Preliminary Press Conference Schedule
...OLAR satellite has recently discovered that oxygen ions
are ejected fromEarth's upper atmosphere as a result of solar coronal mass ejections. Dr. ThomasMoore of NASA/Goddard will discuss the causes and consequences of thisphenomenon, which will be the subject of a day long meeting session. NASA willprovi...
Microbiologist Develops Method For Dyeing Fabrics With Gold
...at creates "sites" in the fabric where themetallic ions
will bond. The fabric then is soaked in a solution of the metal --typically at 0.01 percent of the element or compound. Finally it's rinsed anddried. The result is a colored fabric, and the color is permanent. By using different e...
Fall Meeting: Updated Press Conference Schedule
...e ever, researchers have measured oxygen and other ions
flowing out of Earth's atmosphere in response to a...ect, pressure from the CME and solar wind squeezed ions
out of the ionosphere. Presenter: Thomas E. Moore, Head, Interplanetary Physics Branch, NASA Goddar...
A Woman's Egg Can Be Freezer Friendly, If You Go Easy On The Salt
...ds. But Stachecki suspected that sodium ions
from such solutions weregetting into the eggs and poisoning them. Instead, he decided to try a solutioncontaining choline ions, which do not readily cross cell membranes. Choline isan organic molecule found in many plant and animal tissues, and is a ...
NSF's Highest Honor For New Faculty Fosters Integration Of Research And Education
... and reactivity of biradicals, carbenes, nitrenium ions
and the excited states ofketones and enones. The experimental approach, coupled with computationalmethods, will enhance basic understanding and will address specific unresolved issues in reactive intermediate chemistry. The educational activities ar...
Human/Insect/Jellyfish Genes Team To Quiet "Hyper" Nerve Cells
...channels in the cells' outer membranes. Potassium ions
then flowed through thechannels into cells, changing their electrical state to the equivalent of deadbatteries. Within one to three days, the spinal cells, which normally firerhythmically to the beat of an internal pacemaker, became still, says Marb...
Center For Ion Mobility Spectrometry Established At INEEL
...ow ion mobility is affected by interactionsbetween ions
and molecules in the gas phase. Also, some molecu...d environmental contaminants. Because it resolves ions
in the gasphase instead of liquid, it also promises a simpler design and less waste thanother identi...
Reversible Process For Forming Supramolecular Polymers Could Be The Basis Of Fibers, Molecular Transport Mechanisms
...nts-- crown ethers as hosts and secondary ammonium ions
as guests, they havecreated two different, novel, and reversible structures based onhydrogen-bonding. In one process, a linear supramolecular pseudorotaxane polymer is formed thatcan be drawn into fibers. The structure is the threading of one molecul...
Quarterly News Tipsheet -- Research Highlights From Pacific Northwest National Laboratory
... industry is the presence of potassium andchloride ions
in the process stream. A technology originally de...noferrate forpotassium). The membranes absorb the ions
and then, when the polarity of theelectrodes is reversed, the ions
are unloaded into an appropriate ...
Concern Unfounded About Damage From Vitamin C
...vitamin C canhave undesirable reactions with metal ions
such as copper or iron in thepresence of an oxidant such as hydrogen peroxide," said Anitra Carr, a researchassociate with the Linus Pauling Institute. "Some scientists, including onestudy that got international attention last year, have hypothesized...
Target for cystic fibrosis drugs found
... cell's surface, where they areto shuttle chloride ions
and other essentials into and out of the cell. Thebroken protein gets flagged, degraded and recycled. "The deleted amino acid is like a passport," says Young-Hee Ko, Ph.D., whoinitiated the project. "Without it, the protein can't travel to the cellme...
Mathematics reveals inner workings of potassium pipeline
...- as well as other small,charged entities known as ions
-- would rather be surrounded by water than by the...membrane,acts as a filter, allowing only potassium ions
into the channel. Four of the a -helices meet in the center of the pore and pointtoward a cavity ca...
Protein studies reveal sophisticated control of nerve communication
... channels through which positively charged calcium ions
stream into thenerve cell. The rapid inflow of cal..., which are none other than NMDA receptors.Calcium ions
flood the cell, and the corresponding change in electrical statecauses that neuron in turn to fire. ...
Pacific Northwest developments earn spots in top 100 list
... toconfine and more effectively focus and transmit ions
to be measured. A nearly100 percent efficiency in moving ions
to the analyzer results in an enormousgain in sensitivity, improved data collection, new application...
Study: calcium channels regulate cell movement
...ne rubber sheets andmeasuring the entry of calcium ions
into the cells in response to thestretching. During stretching, calcium concentrations inside the cells jumpedfor periods of three to five seconds, Lee said. Some calcium came from outsidethe cell, while the rest was released from internal storage si...
Colorado State experiment aboard space shuttle Columbia will show how plants
detect gravity; May help grow them on long-term missions
...als, and the investigators maydiscover how calcium ions
mediate gravity-signal sensing. In fact, while theexperiment is rooted in up-and-down, Reddy says the effort actually involvesthree major projects: To understand how plants respond to gravity's signal and their laterdevelopment; To...
University Of Toronto team discovers salt tolerance gene in plants
...in, called the Na+/H+antiport, prevents the sodium ions
from salt from harming the cell and creates abalance of ions
in the cell that draws water into the plant cell by osmosis. "By successfully genetically engineeri...
Help with 'screamingly radioactive' storage tanks: Nonradioactive substitute created to aid nuclear waste clean-up
...nts in the waste that travel as negatively charged ions
in solution suchas selenium and technetium. Iron-rich sludges fail to scavenge these elements. On the other hand, all the sludges scavenged cadmium, lead, barium, strontium,neodymium, and cobalt, and none absorbed a significant amount of cesium." ...
Cincinnati chemists develop microsensors for nuclear waste cleanup, medical
...e to enter the sensor while all positively charged ions
areexcluded. Next comes theelectrochemistry. A pot...f how the system works: A mix of negativelycharged ions
is pulled intothe sensor by the selective coating. The applied potential turns the compound ofintere...
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