Science

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Mission Prepares for Next Jupiter Pass

Mission managers for NASA's Juno mission to Jupiter have decided to postpone the upcoming burn of its main rocket motor originally scheduled for Oct. 19. This burn, called the period reduction maneuver (PRM), was to reduce Juno's orbital period around Jupiter from 53.4 to 14 days. The decision was made in order to further study the performance of a set of valves that are part of the spacecraft's fuel pressurization system. The period reduction maneuver was the final scheduled burn of Juno's main engine.

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Proxima Centauri Might Be More Sunlike Than We Thought

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UCLA chemists report new insights about properties of matter at the nanoscale: Research may lead to new, smaller molecular machines

UCLA chemists report new insights about properties of matter at the nanoscale: Research may lead to new, smaller molecular machines

"We are learning more and more about the properties of matter at the nanoscale so that we can design machines with specific functions," said senior author Miguel García-Garibay, dean of the UCLA Division of Physical Sciences and professor of chemistry and biochemistry.

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Most professional football players who have surgery for an injured disc in the upper spine return to play and perform at a high level, a new study contends.

Most professional football players who have surgery for an injured disc in the upper spine return to play and perform at a high level, a new study contends.

Making sure cancer medications reach the leaky blood vessels surrounding most tumor sites is one of the critical aspects of treatment and drug delivery. While surface chemistry, molecular interactions, and other factors come into play once drug-carrying particles arrive at a tumor, therapeutic medication doesn't do very much good if it never reaches its intended target.

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Once temperatures drop and activities move indoors, it's time to store gardening power tools safely for the winter.

With the high environmental cost of conventional energy sources and the finite supply of fossil fuels, the importance of renewable energy sources has become much more apparent in recent years. However, efficiently harnessing solar energy for human use has been a difficult task. While silicon-based solar cells can be used to capture sunlight energy, they are costly to produce on an industrial scale. Research from the Energy Materials and Surface Sciences Unit at the Okinawa Institute of Science and Technology Graduate University (OIST), led by Prof. Yabing Qi, has focused on using organo-metal halide perovskite films in solar cells. These perovskite films are highly crystalline materials that can be formed by a large number of different chemical combinations and can be deposited at low cost. Recent publications from Prof. Qi's lab cover three different areas of innovation in perovskite film research: a novel post annealing treatment to increase perovskite efficiency and stability, a discovery of the decomposition products of a specific perovskite, and a new means of producing perovskites that maintains solar efficiency when scaled up.

In order to be useful as solar cells, perovskite films must be able to harvest solar energy at a high efficiency that is cost-effective, be relatively easy to manufacture, and be able to withstand the outdoor environment over a long period of time. Dr. Yan Jiang in Prof. Qi's lab has recently published research in Materials Horizons that may help increase the solar efficiency of the organo-metal halide perovskite MAPbI3. He discovered that the use of a methylamine solution during post-annealing led to a decrease in problems associated with grain boundaries. Grain boundaries manifest as gaps between crystalline domains and can lead to unwanted charge recombination. This is a common occurrence in perovskite films and can reduce their efficiency, making the improvement of grain boundary issues essential to maintain high device performance. Dr. Jiang's novel post annealing treatment produced solar cells that had fused grain boundaries, reduced charge recombination, and displayed an outstanding conversion efficiency of 18.4%. His treated perovskite films also exhibited exceptional stability and reproducibility, making his method useful for industrial production of solar cells.

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Rosetta’s journey ends in daring descent to comet

ESA’s historic Rosetta mission has concluded as planned, with the controlled impact onto the comet it had been investigating for more than two years.

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INVECAS will work closely with GLOBALFOUNDRIES’ technology teams to develop and verify a range of intellectual property (IP) for the company’s 22FDX process. Moreover, INVECAS will offer comprehensive ASIC design services to help customers realize SoC des

During bilateral meetings in Daejeon, South Korea, NASA and France’s Office National d'Etudes et de Recherches Aerospatiales (ONERA) signed an agreement Tuesday to collaborate on research that focuses on mitigating the effects of civil air transportation noise. 

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INVECAS to Enable ASIC Designs for Tomorrow’s Intelligent Systems on GLOBALFOUNDRIES' FDX™ Technology: INVECAS to Collaborate with GLOBALFOUNDRIES to Provide IP and End-to-End ASIC Design Services on 22FDX® and 12FDX™ Technologies

INVECAS Inc. and GLOBALFOUNDRIES announced today that INVECAS will provide IP and end-to-end ASIC design services as a part of the foundry’s FDXcelerator™ Partner Program, an ecosystem designed to facilitate 22FDX SoC designs for tomorrow’s intelligent systems. The collaboration accelerates the adoption of FDX technology in applications spanning Internet-of-Things (IoT), mobile, RF connectivity, and networking markets.

INVECAS will work closely with GLOBALFOUNDRIES’ technology teams to develop and verify a range of intellectual property (IP) for the company’s 22FDX process. Moreover, INVECAS will offer comprehensive ASIC design services to help customers realize SoC designs with high confidence and low risk.

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NASA's Hubble Spots Possible Water Plumes Erupting on Jupiter's Moon Europa

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This composite image shows suspected plumes of water vapor erupting at the 7 o'clock position off the limb of Jupiter's moon Europa. The plumes, photographed by NASA's Hubble's Space Telescope Imaging Spectrograph, were seen in silhouette as the moon passed in front of Jupiter. Hubble's ultraviolet sensitivity allowed for the features, rising over 100 miles above Europa's icy surface, to be discerned. The water is believed to come from a subsurface ocean on Europa.

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Gold nanoparticles conjugated quercetin inhibits epithelial-mesenchymal transition, angiogenesis and invasiveness via EGFR/VEGFR-2 mediated pathway in breast cancer

Epidermal growth factor plays a critical role in breast malignancies by enhancing cell proliferation, invasion, angiogenesis and metastasis. Epithelial-mesenchymal transition (EMT) is a crucial process by which epithelial cells lose polarity and acquire migratory mesenchymal properties. Gold nanoparticles are an efficient drug delivery vehicle for carrying chemotherapeutic agents to target cancer cells and quercetin is an anti-oxidative flavonoid known with potent anti-malignant cell activity.

Cell viability was assessed by MTT assay, and protein expression was examined by Western blotting and immunocytochemistry. Cell invasion was monitored using invasion chambers, and cell migration was analysed by scratch wound-healing assay. In vitro and ex vivo angiogenesis studies were performed by capillary-like tube formation assay and chick embryo angiogenesis assay (CEA). 7,12-dimethylbenz(a)anthracene (DMBA) induced mammary carcinoma in Sprague-Dawley rats.

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