Page 9172

Feb 23, 2017

Lanthanide-Doped KLu2F7 Nanoparticles with High Upconversion Luminescence Performance: A Comparative Study

Posted by in categories: energy, nanotechnology

Nice find on nanoparticles and energy transfer — important in scalable devices, energy conservation, etc.

The development, design and the performance evaluation of rare-earth doped host materials is important for further optical investigation and industrial applications. Herein, we successfully fabricate KLu2F7 upconversion nanoparticles (UCNPs) through hydrothermal synthesis by controlling the fluorine-to-lanthanide-ion molar ratio. The structural and morphological results show that the samples are orthorhombic-phase hexagonal-prisms UCNPs, with average side length of 80 nm and average thickness of 110 nm. The reaction time dependent crystal growth experiment suggests that the phase transformation is a thermo-dynamical process and the increasing F/Ln3+ ratio favors the formation of the thermo-dynamical stable phase — orthorhombic KLu2F7 structure. The upconversion luminescence (UCL) spectra display that the orthorhombic KLu2F7:Yb/Er UCNPs present stronger UCL as much as 280-fold than their cubic counterparts. The UCNPS also display better UCL performance compared with the popular hexagonal-phase NaREF4 (RE = Y, Gd). Our mechanistic investigation, including Judd-Ofelt analysis and time decay behaviors, suggests that the lanthanide tetrad clusters structure at sublattice level accounts for the saturated luminescence and highly efficient UCL in KLu2F7:Yb/Er UCNPs. Our research demonstrates that the orthorhombic KLu2F7 is a promising host material for UCL and can find potential applications in lasing, photovoltaics and biolabeling techniques.

Read more

Feb 23, 2017

Single atom feels the quantum heat

Posted by in categories: particle physics, quantum physics

Be discrete —

Single atom feels the quantum heat

Gold climbs a thermal staircase, platinum climbs a thermal hill.

Continue reading “Single atom feels the quantum heat” »

Feb 23, 2017

A diamond-based magnetic resonance microscope could reveal the secrets of human biochemistry

Posted by in categories: chemistry, computing, quantum physics

I told a few CEOs and Boards a few years ago that Syn-diamonds would be critical to Quantum Computing (processing, storage, networking & communications), energy, etc. Well, more proof in imaging and sensors found in these one time worthless imitations.

With a sensor made from diamond, the new microscope can study biochemical processes in unprecedented detail.

Read more

Feb 23, 2017

Recent Harvard Study Reveals Old People Retain Youthful Brain Functions

Posted by in category: neuroscience

Ha! Take that Mark Zuckerberg! (the CEO who said anyone older than 29 years old is not sharp enough for FB)

A recent research revealed that some old people have brain functions fifty years younger than their physical age.

Continue reading “Recent Harvard Study Reveals Old People Retain Youthful Brain Functions” »

Feb 23, 2017

Creativity linked by study to left brain and right brain connections

Posted by in categories: innovation, neuroscience

Alright my neuro research & deep-mind learning friends out their; you may wish to read this find; especially as we continue our mapping and mimicking brain functions in systems as well as look at brain enhancement technologies as this is good to know as we try to boost innovation via technologies.

The most creative individuals have more nerve connections between the right and left sides of their brains, reveal researchers in the United States who analyzed connections in 68 different brain regions.

Long believed to be key in fostering imagination and intuition, as well as artistic awareness, and visual and auditive approaches, the right hemisphere isn’t the only part of the brain with a role to play in determining creativity, according to new research from Duke University.

Continue reading “Creativity linked by study to left brain and right brain connections” »

Feb 23, 2017

KFC menu found to be loaded with MSG “excitotoxins” that can damage neurology

Posted by in categories: food, health

(Natural News) KFC makes much of its “secret blend of herbs and spices,” but there’s a much simpler reason that people tend to find the flavor of the restaurant’s chicken so striking and find themselves craving more: All KFC chicken is literally marinated in MSG.

MSG, or monosodium glutamate, is an artificial salt designed to activate the “umami” taste receptors on the tongue that give food a full, savory flavor. Unlike naturally occurring glutamate, which is an amino acid found in foods such as anchovies, tomato paste, soy sauce, Worcestershire sauce and parmesan cheese, MSG has been connected with various health problems, with some individuals more sensitive than others.

Some of the dangers of MSG might stem from the fact that it is a highly concentrated form of glutamate, which is not only an amino acid but also a neurotransmitter. Such chemicals are known as excitotoxins, meaning that while they are beneficial in low doses, in high doses they can overstimulate neurons literally to death.

Continue reading “KFC menu found to be loaded with MSG ‘excitotoxins’ that can damage neurology” »

Feb 23, 2017

Why is pancreatic cancer so hard to treat? Stroma provides new clues

Posted by in category: biotech/medical

Nice discovery.

Why are pancreatic tumors so resistant to treatment? One reason is that the “wound”-like tissue that surrounds the tumors, called stroma, is much more dense than stromal tissue surrounding other, more treatable tumor types. Stromal tissue is believed to contain factors that aid tumor survival and growth. Importantly, in pancreatic cancer, its density is thought to be a factor in preventing cancer-killing drugs from reaching the tumor.

“You can think of a pancreas tumor as a big raisin oatmeal cookie, with the raisins representing the cancer cells and oatmeal portion representing the dense stroma that makes up over 90% of the tumor,” says David Tuveson, M.D., Ph.D., Director of the Cancer Center at Cold Spring Harbor Laboratory (CSHL). Tuveson leads the Lustgarten Foundation Designated Lab in Pancreatic Cancer Research at CSHL, and his team today reports an important discovery about stromal tissue in the major form of pancreatic cancer, called pancreatic ductal adenocarcinoma, or PDA.

Continue reading “Why is pancreatic cancer so hard to treat? Stroma provides new clues” »

Feb 23, 2017

Ectopic expression of Arabidopsis Target of Rapamycin (AtTOR) improves water-use efficiency and yield potential in rice

Posted by in category: food

How plants are teaching us about TOR proteins and their impacts on the pathways.

The target of Rapamycin (TOR) present in all eukaryotes is a multifunctional protein, regulating growth, development, protein translation, ribosome biogenesis, nutrient, and energy signaling. In the present study, ectopic expression of TOR gene of Arabidopsis thaliana in a widely cultivated indica rice resulted in enhanced plant growth under water-limiting conditions conferring agronomically important water-use efficiency (WUE) trait. The AtTOR high expression lines of rice exhibited profuse tillering, increased panicle length, increased plant height, high photosynthetic efficiency, chlorophyll content and low ∆13 C. Δ13 C, which is inversely related to high WUE, was as low as 17‰ in two AtTOR high expression lines. These lines were also insensitive to the ABA-mediated inhibition of seed germination. The significant upregulation of 15 stress-specific genes in high expression lines indica tes their contribution to abiotic stress tolerance. The constitutive expression of AtTOR is also associated with significant transcriptional upregulation of putative TOR complex-1 components, Os Raptor and OsLST8. Glucose-mediated transcriptional activation of AtTOR gene enhanced lateral root formation. Taken together, our findings indica te that TOR, in addition to its multiple cellular functions, also plays an important role in response to abiotic stress and potentially enhances WUE and yield related attributes.

Read more

Feb 23, 2017

Magnetization switching in ferromagnets

Posted by in category: quantum physics

Nice article on cell spins and the Quantum Bio effect.

Spin manipulation in memory devices typically requires large electrical currents, limiting performance. Here the authors demonstrate magnetization switching in ferromagnetic films by depositing chiral molecules, making use of a proximity effect without needing magnetic or electric fields.

Read more

Feb 23, 2017

A four-day Western-style dietary intervention causes reductions in hippocampal-dependent learning and memory and interoceptive sensitivity

Posted by in categories: biotech/medical, food

Interesting find on hippocampus and ingestive control.

In animals, a Western style diet–high in saturated fat and added sugar–causes impairments in hippocampal-dependent learning and memory (HDLM) and perception of internal bodily state (interoception). In humans, while there is correlational support for a link between Western-style diet, HDLM, and interoception, there is as yet no causal data. Here, healthy individuals were randomly assigned to consume either a breakfast high in saturated fat and added sugar (Experimental condition) or a healthier breakfast (Control condition), over four consecutive days. Tests of HDLM, interoception and biological measures were administered before and after breakfast on the days one and four, and participants completed food diaries before and during the study. At the end of the study, the Experimental condition showed significant reductions in HDLM and reduced interoceptive sensitivity to hunger and fullness, relative to the Control condition. The Experimental condition also showed a markedly different blood glucose and triglyceride responses to their breakfast, relative to Controls, with larger changes in blood glucose across breakfast being associated with greater reductions in HDLM. The Experimental condition compensated for their energy-dense breakfast by reducing carbohydrate intake, while saturated fat intake remained consistently higher than Controls. This is the first experimental study in humans to demonstrate that a Western-style diet impacts HDLM following a relatively short exposure–just as in animals. The link between diet-induced HDLM changes and blood glucose suggests one pathway by which diet impacts HDLM in humans.

Citation: Attuquayefio T, Stevenson RJ, Oaten MJ, Francis HM (2017) PLoS ONE 12: e0172645. doi:10.1371/journal.pone.0172645

Continue reading “A four-day Western-style dietary intervention causes reductions in hippocampal-dependent learning and memory and interoceptive sensitivity” »