Sentences with phrase «chemical reactivity»

«The overwhelming advantage of this design is the lack of chemical reactivity in the switching group,» he says.

According to Dr. Alexander N. Tarnovsky, the finding, which is important to atmospheric photochemistry, also establishes the direct link between chemical reactivity in the gas phase and in solution.

Defects and jagged surfaces at the edges of nanosized platinum and gold particles are key hot spots for chemical reactivity, a team of researchers working at the Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) and the Hebrew University of Jerusalem in Israel confirmed with a unique infrared probe.

According to Dr Frankcombe, «this work demonstrates that these classical, intuitive ideas of individual electron movements have been the right way to look at chemical reactivity all along, even though they previously had little support from quantum mechanics.»

Dean Toste, left, of Berkeley Lab and UC Berkeley, and Elad Gross, right, of the Hebrew University of Jerusalem, led a study of site - specific chemical reactivity on tiny platinum and gold particles at Berkeley Lab's Advanced Light Source.

The team's work also further validates a major theory for predicting chemical reactivity.

Mukamel, who has collaborated with the Rabitz lab but was not involved in the current work, said that the Rabitz group has had a prominent role in this field for decades, advancing technology such as quantum computing and using light to drive artificial chemical reactivity.

The findings, which are the latest to emerge from Micalizio's research focusing on developing a class of chemical reactivity called «metallacycle - mediated cross-coupling,» stand as among the most complex examples of this chemistry ever described.

Crossed molecular beams have provided decades» worth of knowledge into how quantum mechanics governs chemical reactivity.

4 Nanoscale bits of metal oxide, carbon fiber, or metal blends can detoxify hazardous waste: Their extreme solubility and chemical reactivity help them zero in on the nasty stuff.

First - principle calculations and advanced methods for modeling and simulations closely coupled with experiments to extend our understanding of chemical reactivity from the molecular scale to collective phenomenon in complex systems.

HPP - 4382 does not have electrophilic properties, as determined by its structure and lack of chemical reactivity with common thiol - containing compounds such as N - acetylcysteine.

Graphene flakes can have a very large proportion of edge atoms, all of which have a particular chemical reactivity.

Krypton, not to be confused with Kryptonite, the fictional material that does great harm to Superman, is one of six noble gasses that features very low chemical reactivity.

Walead Beshty uses chemical reactivity to alter the surface of materials, while David Altmejd's work generates vital forces from within.

Predicted anvil mixing ratios of the soluble species, HNO3, H2O2, and CH2O, exhibit significant differences among models, attributed to different schemes in these models of cloud processing including the role of the ice phase, the impact of cloud - modified photolysis rates on the chemistry, and the representation of the species chemical reactivity.

Researchers combined a broad spectrum of infrared light, produced by Berkeley Lab's Advanced Light Source (ALS), with an atomic force microscope to reveal different levels of chemical reactivity at the edges of single platinum and gold nanoparticles compared to their smooth, flat surfaces.

Marbles in metamorphic aureoles and iron - rich skarns appear to be favored sites for gold mineralization in these deposits, perhaps due to the rheological character, permeability after fracturing, and chemical reactivity of those rocks to alteration by hydrothermal fluids.

Element 112 shows signs of chemical reactivity, hinting at the behavior of yet undiscovered elements

Being able to literally pull apart these triazoles into their constituent precursors and then unlock their chemical reactivity in new ways is now possible with the assistance of mechanical force,» he says.»

As for cysteines and serines, Cravatt and colleagues found that lysine sites sometimes have a high degree of chemical reactivity, which makes them more likely to be involved in their protein's function — and thus potentially good drug targets.

Employing ultra-small particles, scientists are synthesizing highly tailored materials with the desired stability and chemical reactivity.

Researchers found that chemical reactivity is concentrated at the edges of the particles (red circle at right), with lesser activity in the central area (black circle).

A key test of chemical reactivity is to incubate the compounds with a thiol - containing reductant.

NAC has been shown to suppress induction of Nrf2 - dependent gene activation by electrophilic compounds, an attribute of both its chemical reactivity and its ability to maintain cellular glutathione levels.

Clusters exhibit large variations in critical properties, such as electron affinity and ionization energy with changing size that may be exploited to tune their stability and chemical reactivity for specific applications.

Using this methodology, the chemical reactivity of HPP - 4382 was compared to the electrophile bardoxolone - methyl (CDDO - Me)(Figure S2 in Data S2).

The chemical reactivity of these groups leads to alkylation of reactive thiols and generation of ROS.

For example, a material's melting point, color, strength, chemical reactivity, and more may change at the nanoscale.

These structural defects and edges play a vital role in carbon chemistry and physics, as they alter the chemical reactivity of graphene.

Being soluble, its chemical reactivity is even higher than that of a colloidal suspension.

Black carbon - Operationally defined aerosol species based on measurement of light absorption and chemical reactivity and / or thermal stability; consists of soot, charcoal and / or possible light absorbing refractory organic matter.

While scientists working in the nascent field of environmental nanotechnology have already demonstrated its benefits in cleaning up pollutants and monitoring and preventing their spread, others, more concerned about the long - term effects related to exposure and chemical reactivity, have called for studies into ecotoxicology.