Sentences with phrase «of hydrophobic»

Freshly emitted soot is an example of a hydrophobic aerosol type; after chemical transformation in the atmosphere (e.g. oxidation of its surface rendering it more hygroscopic; condensation of more hydrophilic species onto the particle) it will gradually pick up water as well.

When a voltage is applied, the wetting properties of a hydrophobic surface can be modified and the surface becomes increasingly more hydrophilic (more wettable).

By applying a voltage, the wetting properties of a hydrophobic surface can be modified and the surface becomes increasingly hydrophilic (wettable).

Protein - protein complexes show good complementarity in surface shape and polarity and are stabilized largely by weak interactions, such as burial of hydrophobic surface, hydrogen bonds, and van der Waals forces.

«Deficient neuron - microglia signaling results in impaired functional brain connectivity and social behavior» Y. Zhan, R.C. Paolicelli, F. Sforazzini, L. Weinhard, G. Bolasco, F. Pagani, A. L. Vyssotski, A. Bifone, A. Gozzi, D. Ragozzino, C.T. Gross Nature Neuroscience 17 (3), 400-4006 (2014) «USPIO - loaded Red Blood Cells as a biomimetic MR contrast agent: a relaxometric study» A. Boni, D. Ceratti, A. Antonelli, C. Sfara, M. Magnani, E. Manuali, S. Salamida, A. Gozzi, and A. Bifone Contrast Media and Molecular Imaging 9, 229 - 236 (2014) «Distributed BOLD and CBV - weighted resting - state networks in the mouse brain» F. Sforazzini, A.J. Schwarz, A. Galbusera, A. Bifone, and A. Gozzi NeuroImage 87, 403 - 415 (2014) «Antimicrobial peptides design by evolutionary multiobject optimization» G. Maccari, M. Di Luca, R. Nifosì, F. Caldarelli, G. Signore, C. Boccardi, and A. Bifone PloS Computational Biology 9 (9): e1003212 (2013) «Differential effect of orexin - 1 and crf - 1 antagonism on stress circuits: a fMRI study in the rat with the pharmacological stressor yohimbine» A. Gozzi, S: Lepore, E: Merlo Pich, and A. Bifone Neuropsychopharmacology 38 (11): 2120 - 2130 (2013) «Water dispersal and functionalization of hydrophobic iron oxide nanoparticles with lipid - modified poly (amidoamine) dendrimers» A. Boni, L. Albertazzi, C. Innocenti, M. Gemmi, and A. Bifone.

The newly reported method takes the concept of amphiphilic assembly one step further, and applies it to a completely new set of hydrophobic molecules, intriguingly with no water - loving part to them.

«The taste of whisky is primarily linked to so - called amphipathic molecules, which are made up of hydrophobic and hydrophilic parts.

Scientists funded by the NSF are studying a Namibian beetle, whose backside is a patchwork of hydrophobic and hydrophilic areas that help to collect and disperse water as needed.

The beetles have a combination of hydrophobic hairs that line their legs and hydrophilic claws that grip the surface of water without getting too wet.

These columns separate the analytes on the basis of their hydrophobic interactions with the bonded reversed - phase (stationary phase).

It's not just the earbud design, which is made of hydrophobic materials to keep out sweat and moisture while creating a gentle seal that stays put.

These boots are made of hydrophobic materials.

Not exact matches

As I demonstrated last Friday, Winters — by partial quotation, distortion, and almost hydrophobic vituperation — defamed the archbishop of Philadelphia.

The protein structure of the hard keratins such as wool is predominately hydrophobic amino acids coupled with a high lipid percentage lending a waterproof characteristic to the wool fiber.

When a drop of liquid lands on a hydrophobic surface, the fluid's momentum spreads it into a flat pancake.

Water - based peeling of thin hydrophobic films.

The model system developed by researchers from the Jülich Centre for Neutron Science is made up of water and block copolymers — thread - like molecules with both a hydrophilic and a hydrophobic component.

A special feature of the model colloids made these findings possible: their softness can be tuned very finely over a large area by altering the length ratio between the hydrophilic and hydrophobic components of the molecule threads.

The specificity for coupling to the stimulatory guanine nucleotide regulatory protein lies within a region extending from the amino terminus of the fifth hydrophobic domain to the carboxyl terminus of the sixth.

They found it was the apparently random positioning of water - loving (hydrophilic) molecules in a protein that prevents water - hating molecules (hydrophobic, which possess the dominant folding force), from binding with other proteins.

Just as oil balls up in water, hydrophobic regions of a protein clump together for protection, and the parts of the protein that don't mind water fold over them.

By comparing the hydrophobic surface and nanotextured surface, the group discovered that enhanced water droplet bouncing was created by the combined impact of the Leidenfrost levitation and the nonwetting Cassie state.

Significantly, the group's work furthers the fundamental understanding of the dynamic Leidenfrost droplet levitation and droplet - bouncing phenomena on hydrophobic and nanoengineered surfaces.

X-ray diffraction has already helped to show that the surface of the AFPs that binds to ice is covered in tiny hydrophobic spikes.

To copy the beetle's water - collecting design, materials scientist Michael Rubner, chemical engineer Robert Cohen, and colleagues at the Massachusetts Institute of Technology in Cambridge created a rough coating so water repelling — or hydrophobic — that water sprayed onto it stood up in nearly spherical droplets.

A comparison of the simulations showed weaker interaction between hemicellulose and the modified lignin than with wild lignin, suggesting that hydrophobic lignin interacts less with hydrophilic hemicellulose.

Instead of a hydrophilic alcohol group (an oxygen - hydrogen molecule bound to a hydrogen - saturated carbon atom), the final lignin polymer contained a hydrophobic aldehyde group (a carbon atom double - bonded to an oxygen atom).

The C - terminal end of the cytoplasmic tail of gp41, measuring 105 amino acid residues, was tightly associated to the membrane and had three alpha - helixes with portions that were hydrophobic and portions that were hydrophilic.

We show that rapid light — induced free - radical polymerization at ambient temperature produces multifunctional fluorinated photopolymer coatings that confer luminescent and easy - cleaning features on the front side of the devices, while concurrently forming a strongly hydrophobic barrier toward environmental moisture on the back contact side.

Carbon nanomaterials can mix in water despite being hydrophobic, raising the possibility of a spreading spill in the future.

The researchers realized, for example, that a lot of natural glues that work in water have hydrophobic elements that help clear away the water for a better stick.

On the other hand, the researchers said it may be worth looking at whether hydrophobic substrates that mimic the positive effects observed in single - walled nanotubes could be used for high - efficiency channeling of water to seeds.

They suspect the results spring from nanotubes» natural hydrophobic (water - avoiding) nature that in one experiment apparently facilitated the plants» enhanced uptake of water.

The narrow selectivity filter is only 12 angstroms long, whereas the remainder of the pore is wider and lined with hydrophobic amino acids.

Researchers at Osaka University overcame these limitations with fluorescent SM analogs by joining several fluorescent chemical compounds (fluorophores) that were highly hydrophilic to the hydrophobic lipid part (mainly acyl chains) of the synthetic molecule.

While silica does not participate directly in the catalysis, the surface molecular composition of the silica grains can influence its effectiveness if the chemical group is predominantly hydrophilic or hydrophobic.

The researchers were puzzled by a nonlinear drop in surface water diffusivity — as measured by the Overhauser dynamic nuclear polarization apparatus in the Han lab — as the chemical composition of the silica surface moved from hydrophobic to hydrophilic.

For example, the aquaporin protein - mediated flow of water across biological cell membranes is down to a balance between hydrophobic and hydrophilic interactions with channel surfaces.

Conducted by Zainab Ngaini and colleagues at the Universiti Malaysia Sarawak, the study found that when sago waste (consisting primarily of cellulose and lignin) is chemically modified using fatty acid derivatives, the resulting material is more hydrophobic than untreated sago waste, implying that it has less affinity for water and an excellent affinity for oil.

As a general technique, the nanotweezers are applicable to a wide range of metal, semiconductor, polymer and dielectric nanostructures with charged or hydrophobic surfaces.

While most research has focused on the hydrophobic properties of such surfaces, it turns out that their thermal properties are also crucially important — and provide an unexpected opportunity to «tune» those surfaces to meet the exact needs of a given application.

This experiment works better if the needle has a hydrophobic — or water repellent — coating such as Teflon (like the surface of nonstick pans).

In the prototype, the researchers coat the board with a much denser array of tiny spheres, only a micrometer high, made from a hydrophobic (water - repellent) material.

This hydrophobic coating expels water molecules from the vicinity of the electrode surface and then, upon charging for the first time, decomposes and forms a stable interphase — a thin mixture of breakdown products that separates the solid anode from the liquid electrolyte.

Each spore of the fungus is part hydrophobic, with a shape like a thin film, and part hydrophilic, with a shape like a sphere.

In this study, the researchers showed that the gels survived injection under the skin of mice and successfully released two drugs, one hydrophobic and one hydrophilic, over several days.

To compare the two forms of ice growth, the researchers designed a transparent surface split into halves: one hydrophilic, one hydrophobic.

The researchers demonstrated the versatility of their approach by using two polymers with radically different material properties — one hydrophobic and one hydrophilic — to make their particles.

When the researchers subjected both halves to puffs of air, they found that ice abandoned the hydrophobic half but steadfastly held to the hydrophilic side.

The secretions of the anal glands, an oily substance, present an ideal hideout for the bacteria, which doesn't thrive in a water - based environment (hydrophobic).