Grape seed extract creates these conditions that are unfavorable to growth. Specifically, the paper shows that grape seed extract both damages cancer cells’ DNA (via increased reactive oxygen species) and stops the pathways that allow repair (as seen by decreased levels of the DNA repair molecules Brca1 and Rad51 and DNA repair foci).

“Yet we saw absolutely no toxicity to the mice, themselves,” Agarwal says.

Again, the grape seed extract killed the cancer cells but not the healthy cells.

“I think the whole point is that cancer cells have a lot of defective pathways and they are very vulnerable if you target those pathways. The same is not true of healthy cells,” Agarwal says.

Grape seed extract kills head and neck cancer cells, leaves healthy cells unharmed

True Knowledge is hoping the semantic database it has built up over the past few years could provide this edge.

Evi’s availability and promise as an artificial intelligence app, coupled with its low price (99 cents on the iPhone and free on Android phones), caused its popularity to skyrocket following its Monday release, and made it difficult for those downloading it to try it out. Evi isn’t the only Siri competitor—and in fact its capabilities are somewhat different from Siri’s offerings—but plenty of smart-phone users, it seems, are eager for Evi’s help in particular.
…
Essentially, the app takes your spoken or typed question and uses its vast store of knowledge along with outside data from websites like Yelp to give pertinent answers. This is similar to how Siri works, but Apple’s assistant focuses more on accomplishing tasks, such as making calls, setting alerts, or dictating text messages, by working with the iPhone’s other apps. Evi does not do these things, but Tunstall-Pedoe says it will eventually be able to take on more tasks.

New Virtual Helper Challenges Siri – Technology Review

This virus infects bacteria, specifically, the common E. coli bacterium. Although Lambda isn’t dangerous to humans, the new research highlights how viruses are capable of evolving complex and potentially deadly new traits.

“We were surprised at first to see Lambda evolve this new function, this ability to attack and enter the cell through a new receptor – and it happened so fast,” explained MSU graduate student Justin Meyer.

“But when we re-ran the evolution experiment, we saw the same thing happen over and over.”

This virus evolves and mutates | TG Daily

Eating chocolate could stave off bowel cancer, say scientists.

A study found having daily doses of cocoa reduced the risk of developing the disease.

It is the latest piece of research to highlight the health benefits of the cocoa bean, most of which is harvested in West Africa.

Eating chocolate can stave off bowel cancer, say scientists. | Mail Online

Aspiratul este un chin. Atunci de ce sa nu lasati pe altcineva sau altceva sa faca sarcina neplacuta? De exemplu, pe revolutionarul NaviBot oferit de Samsung. A fost proiectat sa va curete casa mai bine ca oricand, in orice zi doriti. Cu sistemul sau Visionary Mapping, NaviBot este dotat cu o camera video care creeaza o harta a spatiului dvs. de locuit, stabilind cel mai bun traseu pentru a face curatenie. Un traseu care va protejeaza toate obiectele de valoare, multumita senzorilor sai de siguranta inteligenti si datorita Virtual Guard, un gard invizibil pe care-l puteti activa cand aveti nevoie. Indiferent ce feng shui personal aveti, NaviBot este modalitatea inteligenta de a face curatenie. Asa ca opriti-va, relaxati-va si incredintati-va in Samsung.

Robot aspirare fara sac Samsung Navibot VCR 8845, 0.6 L, senzor, telecomanda, delay start VCR8845T3A/BOL – eMAG.ro

Altai in southern Siberia sits right at the centre of Russia. But the tiny, mountainous republic has a claim to fame unknown until now – Native Americans can trace their origins to the remote region.

DNA research revealed that genetic markers linking people living in the Russian republic of Altai, southern Siberia, with indigenous populations in North America.

A study of the mutations indicated a lineage shift between 13,000 and 14,000 years ago – when people are thought to have walked across the ice from Russia to America.

‘Native Americans’ actually came from a tiny mountain region in Russia, DNA research reveals | Mail Online

“The smallest carbon-nanotube transistor ever made, a nine-nanometer device, performs better than any other transistor has at this size.

For over a decade, researchers have promised that carbon nanotubes, with their superior electrical properties, would make for better transistors at ever-tinier sizes, but that claim hadn’t been tested in the lab at these extremes. Researchers at IBM who made the nanotube transistors say this is the first experimental evidence that any material is a viable potential replacement for silicon at a size smaller than 10 nanometers.”

Smallest-Ever Nanotube Transistors Outperform Silicon – Technology Review

“Elpida Memory has announced the development of its first-ever high-speed non-volatile resistance memory (ReRAM) prototype. As the ReRAM prototype was made using a 50nm process technology it has a memory cell array operation of 64Mb, one of the highest densities possible for ReRAM.

ReRAM is next-generation semiconductor memory technology that uses material which changes resistance in response to changes in the electric voltage. This new type of non-volatile memory can store data even when the power supply is turned off. Its most attractive feature is that it can read/write data at high speeds using little voltage. While dynamic random-access memory (DRAM) is superior to existing non-volatile memory with respect to read/write speeds and endurance, DRAM quickly loses data when the power supply is removed. NAND flash memory, a leading example of nonvolatile memory, retains data even when the power is removed but has performance measures that are inferior to DRAM.

ReRAM, on the other hand, is a type of semiconductor memory that contains the advantages of both DRAM and NAND flash memory. It has a write speed of 10ns, about the same as DRAM, and write endurance of more than a million times, or more than 10 times greater than NAND flash.”

Elpida Shows Off Resistance RAM Prototype – X-bit labs

“They created the synthetic membranes from a watery emulsion of an oil and a detergent. Alone it’s stable. Add copper ions and sturdy vesicles and tubules begin to bud off the oil droplets. After 24 hours, the oil droplets are gone, “consumed” by the self-assembling membranes.

Although other scientists recently announced the creation of a “synthetic cell,” only its genome was artificial. The rest was a hijacked bacterial cell. Fully artificial life will require the union of both an information-carrying genome and a three-dimensional structure to house it.

The real value of this discovery might reside in its simplicity. From commercially available precursors, the scientists needed just one preparatory step to create each starting lipid chain.

“It’s trivial and can be done in a day,” Devaraj said. “New people who join the lab can make membranes from day one.””

Envelope for an artificial cell

“For the first time since they were discovered 13 years ago, human embryonic stem cells (hESCs) have shown medical promise.

Two people with eye degeneration both say their vision improved in the four months after they received implants of retinal pigment epithelial cells made from hESCs. The treatments were also safe, with no sign that the cells triggered aggressive tumours called teratomas, no sign of immune rejection of the cells, and no inflammation”

Blindness eased by historic stem cell treatment – health – 25 January 2012 – New Scientist