Tag: "particles" at medical news
Electric fields have potential as a cancer treatment
...g electric fields that jiggle electrically charged particles
in cells back and forth hundreds of thousands of times per second. The electric fields have an intensity of only one or two volts per centimeter. Such low-intensity alternating electric fields were once believed to do nothing significant other than h...
Dead on target
...e groups are acetylated to ensure that the complex particles
do not bear any surface charges. This last step is especially important to ensure the biocompatibility of these systems and to prevent the nonspecific adhesion of other materials. Molecular dynamics simulations indicate that the folic acid attachment...
UCLA researchers develop new nanomaterials to deliver anti-cancer drugs to cells
...mesoporous silica nanoparticles and delivering the particles
into a variety of human cancer cells to induce cel...livery systems using pegylated polymers, liposomal particles
or albumin-based nanoparticles have been developed. The new research findings show that mesoporou...
Stanford researchers track human stem cells transplanted into rat brain
...d by stroke. The research group placed miniscule particles
of iron inside stem cells to act as cellular beaco...r Raphael Guzman, MD, wanted to make sure that the particles
worked in human cells as well. "I think it's critical that we are applying this technique in human...
Adult brain cells rediscover their inner child
...dicated to learning and memory, by injecting virus particles
to light up nerve progenitor cells. Any freshly made nerves glowed green and become permanently marked for later identification. "In essence, we stamped a birth date on new adult nerve cells," says Hongjun Song, Ph.D., assistant professor of neur...
Indoor smoking bans: Are they creating unhealthy outdoor zones for secondhand smoke?
...rs and one area with no smokers. They measured the particles
and carbon monoxide every 30 seconds, and then every five minutes they counted the number of cars, smokers and nonsmokers who passed by. They found that a rise in the pollutants was associated with an increase in the number of smokers, and not with...
System to pinpoint airline passengers who contaminate cabins
...mperature, velocity and concentration of gases and particles
in the air. "This is difficult to do, in part because an airline cabin is a pretty large area," Chen said. "The procedure now requires several days of computing time to complete the track, meaning the method could be used only after a contamination...
Medical, high-energy physicists collaborate to improve PET scans
...veloping new electronics for identifying subatomic particles
in high-energy accelerators that may also enable r...hysicists seek to identify what types of subatomic particles
they produce in collider experiments. The identity of many such particles
remains a mystery, and thu...
Impact of a chemical component of diesel exhaust particles
...exposure to a chemical component of diesel exhaust particles
can compromise the ability of resistance arteries ...enerated by buses, trucks, trains and ferries. The particles
can remain airborne for extended time periods, and travel long distances prior to being inhaled. Wh...
Mayo Clinic research in cardiovascular disease presented at Experimental Biology 2007
...rterial calcification to the presence of nanosized particles
o so small that some scientists question whether a nanoparticle can live and, if so, play a viable role in causing disease. A new Mayo Clinic study cites evidence showing the presence of nanoparticles near plaque-filled arteries in animal models. T...
UD receives $1.9 million for new spintronics center
...o environmental sensors that can detect nano-sized particles
much tinier than human cells. UD's research grant is part of $7.5 million grant awarded to universities in four states--Delaware, Kentucky, Maine, and New Hampshire--by DOE's Experimental Program to Stimulate Competitive Research (EPSCoR), which su...
Penn researchers show how nanocylinders deliver medicine better than nanospheres
... of print publication in March 2007. "These are particles
that go with the flow," says Dennis E. Discher, PhD, Professor of Chemical and Biomolecular Engineering at Penns Institute for Medicine and Engineering. "The blood stream is constantly pumping, and these cylindrical nanoparticles align with the flow ...
'Smart' sunglasses and goggles let users adjust shade and color
...c material. Applying a small voltage moves charged particles
from one layer to another, and changes the transparency. Once the glasses are a certain tint they will stay that way without power for about 30 days. A single watch battery is able to power thousands of transitions, Xu said. Organic molecules allow...
MRI contrast agent can detect heart attack in the making
...d arteries, the lining is often intact, preventing particles
from entering the plaque. But high-density lipoprotein, also known as HDL or good cholesterol, moves freely through this barrier to carry cholesterol out of plaques to the liver, where it is eliminated from the body. Using an artificially synthes...
Nanoparticles can track cells deep within living organisms
...sed in artificial blood. The fluorine atoms in the particles
can be detected by tuning an MRI scanner to the un... the research findings. "The cells just take these particles
in naturally no special sauces have to be added to make them tasty to these cells," says Wickline, ...
Fermions do not travel together, theory proved
...rate hitherto, does indeed exist. It is as if the particles
repel each other, even though interactions between..., and thus an increased probability of finding two particles
together.The experiments at the Institut d'optique were performed using the same system (which ensur...
Texas A&M study proves pollution from China And India affecting world's weather
.... The Pacific storm track carries these polluted particles
to the west coasts of Canada and the United States, across America and eventually, most of the world, Zhang notes. "The Pacific storm track can impact weather all over the globe," he says. "The general air flow is from west to east, but there is ...
In presence of fragrant cleaning products, air purifiers that emit ozone can dirty the air
...byproduct of ionization used for charging airborne particles
and electrostatically attracting them to metal ele...e matter in indoor air." High levels of airborne particles
can aggravate asthma and cardiovascular problems, and have been linked to higher death and lung canc...
QUT scientists on the way to sifting out a cure for HIV
...ater. Nanofiltration is the filtration of minute particles
using a filter with extremely small pores. "If w...d at the same time effectively filter out unwanted particles
or viruses. He said another failing of current membranes was they often formed pin-holes and crack...
Using nanomagnets to enhance medical imaging
...vide low contrast. The second category encompasses particles
of thousands of atoms or crystals, which alter local magnetic fields; they provide contrast variation in a larger region but have irregular designs and magnetic properties that are difficult to control. By comparison, molecular nanomagnets can be des...
1 2 3 4 5 6 7