The Parajet SkyCar in “fly mode” is suspended by the latest ram-air wing and capable of take-off from a field or airstrip in less than 200 metres. It will be easier and safer to fly than any other aircraft, as it has no pitch control and therefore impossible to stall or dive. Should the engine fail, the pilot would simply glide down into the nearest field or strip of sandy desert.
We present an approach to building interferometric telescopes using ideas of quantum information. Current optical interferometers have limited baseline lengths, and thus limited resolution, because of noise and loss of signal due to the transmission of photons between the telescopes. The technology of quantum repeaters has the potential to eliminate this limit, allowing in principle interferometers with arbitrarily long baselines.
There is an article titled Toward Improved Ionizing Radiation Safety Standards from the July 2011 issue of Health Physics, a peer-reviewed journal about radiation safety.
The article explains in clear, but scientific terms, how radiation at low average levels can result in increasing the latency period of cancer development past the end of a natural lifespan. We all have the potential for developing cancer, but we also have finite lives. Dr. Raabe’s research has led him to the conclusion that low average doses of radiation that might add up to a substantial cumulative dose do not kill off cancer cells, but they delay the ability of those cells to do any real damage until after their host organism is dead from other causes anyway.
When tied together, RadioAstron's telescopes have a resolution of 7 microarcseconds. That's thousands of times better than the Hubble Space Telescope, which has a peak resolution between 0.05 and 0.1 arcseconds.
An arcsecond is swath of the sky measuring less than three one-thousandths of a degree.
But Hubble observes the universe in visible, ultraviolet and near-infrared light, while the RadioAstron mission will unveil the unseen cosmos emitting radio waves.
By using a small cluster of ten IBM xSeries® servers, IBM's cluster file system (GPFS™), and by placing file system metadata on a new solid-state storage appliance from Violin Memory, IBM Research demonstrated, for the first time, the ability to do policy-guided storage management (daily tasks such as file selection for backup, migration, etc.) for a 10-billion-file environment in 43 minutes. This new record shatters previous record by factor of 37. GPFS also set the previous record in 2007
The topics include:
* The nature of science and engineering, and the prospects for a deep transformation in the material basis of civilization.
* Why all of this is surprisingly understandable.
* A personal narrative of the emergence of the molecular nanotechnology concept and the turbulent history of progress and politics that followed
* The quiet rise of macromolecular nanotechnologies, their power, and the rapidly advancing state of the art
* Incremental paths toward advanced nanotechnologies, the inherent accelerators, and the institutional challenges
* The technologies of radical abundance, what they are, and what they will enable
The new price is for individuals who are part of a group of at least 50 people who are sequenced for research purposes using Illumina's HiSeq machines at the company's laboratory in Sorrento Valley or facilities operated by partners, the National Center for Genome Resources in Santa Fe, N.M., and the Genomic Medicine Institute in Seoul, South Korea. Groups of 10 to 49 will be charged $5,000 for each sequence, Illumina said.
"Ideally, you just tweak the existing system to make it better," says Ruud. This worked for one of the nanotechnologies in the company's portfolio, a superhydrophobic coating that sheds water very well and will improve the efficiency of steam-turbine blades. When investigating ways of making these coatings over large areas, the GE researchers found that they could use the same high-temperature spray process they use to make other coatings, just by making a few relatively simple changes.
H+: SENS describes a whole battery of medical treatments that could theoretically defeat the aging process. These treatments range from relatively simple ones like injecting people with enzymes that can break down tough wastes inside of cells, to highly advanced ones like genetically altering trillions of somatic cells in full grown adults. Considering the differential technical challenges, what SENS therapies will most likely become available first, and which will be developed last?
AdG: Some of them are already pretty close: probably the closest is in fact not the enzyme therapy you mention, but the use of vaccines to eliminate extracellular aggregates (especially amyloid). But when we consider the others, actually I wouldn’t like to make the call, because the hardest ones are the ones that the SENS Foundation and I are prioritizing in terms of the early research. In other words, we’re hoping that they will start to catch up with the easier ones. I suspect that the challenge of genetically modifying a high proportion of cells by somatic gene therapy will have been largely solved before we complete the development of all the genes that we want to introduce.
"The brain is incredible," says Lulu Qian, a Caltech senior postdoctoral scholar in bioengineering and lead author on the paper describing this work, published in the July 21 issue of the journal Nature. "It allows us to recognize patterns of events, form memories, make decisions, and take actions. So we asked, instead of having a physically connected network of neural cells, can a soup of interacting molecules exhibit brainlike behavior?"
The carbon atoms in graphite are arranged into stacked sheets that are weakly bound to one another. A single layer, referred to as graphene, can be peeled from bulk graphite using adhesive tape. The properties of graphene differ radically from the bulk material because it is only one atom thick, and so scientists are keen to harness this potential in a form compatible with existing optical and electronic devices. Small, regular-shaped graphene nanostructures called quantum dots, for example, could open up new possibilities in such applications.
Quantum dots, at just a few nanometers in diameter, can influence the flow of current at the single-electron level. However, making lots of quantum dots all with the same dimensions, and therefore with the same electronic properties, has proved to be tricky. The researchers came up with a simple solution: they took a hollow spherical form of carbon known as a ‘buckyball’—which is composed of 60 carbon atoms and always has the same shape—and fragmented it to produce uniformly sized quantum dots of graphene
These fundamental advancements in the understanding of timing in biology can be translated into major breakthroughs in trauma care on the battlefield by accessing the mechanisms that control biological time to improve patient outcomes, for example, by lengthening the window of opportunity for medical and treatment interventions.
Ten weeks after investigators implanted the genetically engineered human stem cells into mice, tissue repair and function, as measured by the heart’s ability to pump blood, was twice that of controls. This improvement persisted for at least 20 weeks after implantation.
“This study brings us one step closer to a clinical application for stem-cell therapy,” said Sadia Mohsin, Ph.D., lead author of the study and post-doctoral research scholar at San Diego State University in California. “Since patients with heart failure are normally elderly, their cardiac stem cells aren’t very healthy. We were able to modify these stem cells, obtained from heart failure patients, to be healthier so that they could be transplanted into the heart and survive and thrive.”
Researchers used cardiac stem cells from patients receiving mechanical assist device pumps to help their failing hearts. They then genetically engineered the cells to express a protein, known as Pim-1, which naturally occurs in response to heart damage. Using molecular technology, they attached this protein to another, derived from jellyfish, which glows fluorescent green so that Pim-1 expression was clearly visible.
If the project is successful, the new technology could allow for computer circuits that are capable of making nearly instantaneous calculations in life-or-death situations, such as locating a terrorist from a radio signal or deciding whether to eject a fighter pilot from a jet. It might also allow speedy processing of huge amounts of data, such as the video signals that currently guide the movements of robotic cars or scans of genetic data for clues to fighting diseases.
So what about us? Can we insert the telomerase gene into all of our cells and extend our lifespan?
Inserting the gene directly into our DNA, through the use of viral vectors, is not a viable option. The main problem with this approach is that inserting genes into cells often causes cancer. That's because the gene gets inserted into our chromosomes at random sites, and if the wrong site is chosen, the gene can interrupt and disable cancer suppressor genes or turn on cancer-inducing genes. And you only need one out of the hundred trillion cells in your body to become cancerous in order to kill you.
Fortunately, the telomerase gene already exists in all our cells. That's because the DNA in every one of our cells is identical: a skin cell, muscle cell, and liver cell all contain exactly the same genetic information. Thus, if the cells that create our sperm and egg cells contain the code for telomerase, every other cell must contain that code as well.
The research, funded by the Biotechnology and Biological Sciences Research Council (BBSRC) and the University of Glasgow and published in the journal Nature Materials, shows how a new nanoscale plastic can cheaply and easily solve a problem which has previously made the expansion of stem cells for therapeutic purposes impossible.
The Earth has cooled since its formation, yet the decay of radiogenic isotopes, and in particular uranium, thorium and potassium, in the planet’s interior provides a continuing heat source. The current total heat flux from the Earth to space is 44.2±1.0 TW, but the relative contributions from residual primordial heat and radiogenic decay remain uncertain. However, radiogenic decay can be estimated from the flux of geoneutrinos, electrically neutral particles that are emitted during radioactive decay and can pass through the Earth virtually unaffected. Here we combine precise measurements of the geoneutrino flux from the Kamioka Liquid-Scintillator Antineutrino Detector, Japan, with existing measurements from the Borexino detector, Italy. We find that decay of uranium-238 and thorium-232 together contribute TW to Earth’s heat flux. The neutrinos emitted from the decay of potassium-40 are below the limits of detection in our experiments, but are known to contribute 4 TW. Taken together, our observations indicate that heat from radioactive decay contributes about half of Earth’s total heat flux. We therefore conclude that Earth’s primordial heat supply has not yet been exhausted.
Aluminum-Celmet can be used to improve the capacity of lithium-ion secondary batteries and capacitors. The positive electrode current collector in a conventional lithium-ion secondary battery is made from aluminum foil, while the negative electrode current collector is made from copper foil. Replacing the aluminum foil with Aluminum-Celmet increases the amount of positive active material per unit area. Sumitomo Electric’s trial calculations indicate that in the case of automotive onboard battery packs, such replacement will increase battery capacity 1.5 to 3 times. Alternatively, with no change in capacity, battery volume can be reduced to one-third to two-thirds. These changes afford such benefits as reduced footprint of home-use storage batteries for power generated by solar and other natural sources, as well as by fuel cells.
Pfister and researchers in his lab used sophisticated lasers to engineer 15 groups of four entangled Qmodes each, for a total of 60 measurable Qmodes, the most ever created. They believe they may have created as many as 150 groups, or 600 Qmodes, but could measure only 60 with the techniques they used.
Each Qmode is a sharply defined color of the electromagnetic field. In lieu of a coin toss measurement, the Qmode measurement outcomes are the number of quantum particles of light (photons) present in the field. Hundreds to thousands of Qmodes would be needed to create a quantum computer, depending on the task.
Scalability and coherence are two essential requirements for the experimental implementation of quantum information and quantum computing. Here, we report a breakthrough toward scalability: the simultaneous generation of a record 15 quadripartite entangled cluster states over 60 consecutive cavity modes (Q modes), in the optical frequency comb of a single optical parametric oscillator. The amount of observed entanglement was constant over the 60 Q modes, thereby proving the intrinsic scalability of this system. The number of observable Q modes was restricted by technical limitations, and we conservatively estimate the actual number of similar clusters to be at least 3 times larger. This result paves the way to the realization of large entangled states for scalable quantum information and quantum computing.
The ability to explore cell signalling and cell-to-cell communication is essential for understanding cell biology and developing effective therapeutics. However, it is not yet possible to monitor the interaction of cells with their environments in real time. Here, we show that a fluorescent sensor attached to a cell membrane can detect signalling molecules in the cellular environment. The sensor is an aptamer (a short length of single-stranded DNA) that binds to platelet-derived growth factor (PDGF) and contains a pair of fluorescent dyes. When bound to PDGF, the aptamer changes conformation and the dyes come closer to each other, producing a signal. The sensor, which is covalently attached to the membranes of mesenchymal stem cells, can quantitatively detect with high spatial and temporal resolution PDGF that is added in cell culture medium or secreted by neighbouring cells. The engineered stem cells retain their ability to find their way to the bone marrow and can be monitored in vivo at the single-cell level using intravital microscopy.
The Tata group , maker of the $2,500 Nano car, said that the 20-square-metre (215-square-foot) home comes from a pre-fabricated kit that includes doors, windows and a roof.
"We have already prepared two-three different designs based on discussions with users and are gathering more feedback," Sumitesh Das, the head of the project at Tata, told reporters in Hyderabad on Friday.
The Eco-Dome is a small home design of approximately 400 square feet (40 sq. meters) interior space. It consists of a large central dome, surrounded by four smaller niches and a wind-scoop, in a clover leaf pattern.
