Results 21 to 30 of about 887,698 (266)

Surface Chemical Composition of Diatoms [PDF]

ChemBioChem, 2009
AbstractAmong diatoms, Phaeodactylum tricornutum is a peculiar species that exists in three morphotypes with distinct cell wall structures and low silica content. X‐ray photoelectron spectroscopy (XPS) analysis was performed on P. tricornutum and compared with diatom Thalassiosira pseudonana; the results provide new information on the chemical ...
Tesson, B., Genet, M.J., Fernandez, V., Degand, S., Rouxhet, P.G., Martin-Jezequel, V.   +5 more
openaire   +3 more sources

Integrating Particle Microstructure, Surface and Mechanical Characterization with Bulk Powder Processing

KONA Powder and Particle Journal, 2019
Multiple industrial applications, including pharmaceuticals, rely on the processing of powders. The current powder characterization framework is fragmented into two general areas.
Rodolfo Pinal, M. Teresa Carvajal
doaj   +1 more source

A CO2 Cycle on Ariel? Radiolytic Production and Migration to Low-latitude Cold Traps

The Planetary Science Journal, 2022
CO _2 ice is present on the trailing hemisphere of Ariel but is mostly absent from its leading hemisphere. The leading/trailing hemispherical asymmetry in the distribution of CO _2 ice is consistent with radiolytic production of CO _2 , formed by charged
Richard J. Cartwright, Tom A. Nordheim, Riley A. DeColibus, William M. Grundy, Bryan J. Holler, Chloe B. Beddingfield, Michael M. Sori, Michael P. Lucas, Catherine M. Elder, Leonardo H. Regoli, Dale P. Cruikshank, Joshua P. Emery, Erin J. Leonard, Corey J. Cochrane   +13 more
doaj   +1 more source

Research Status on Surface Modification of Materials by Low-Temperature Plasma [PDF]

Cailiao Baohu, 2022
As a new type of method to activate molecular, low-temperature plasma has a large number of active particles with various types, which are easy to react with the surface of the material, and is suitable for surface modification treatment of the materials.
QIAO Qian-sen, BA De-ma
doaj   +1 more source

Surface composition analysis of PP films treated by corona discharge

Materials Research, 2003
Polypropylene films (PP) surface treated by corona discharge in air was analyzed to verify the changes on surface composition. The presence of oxidized polar groups on the film surface, mainly, C=O, C-O and COH, was confirmed by infrared spectroscopy ...
Noeli Sellin, João Sinézio de C. Campos   +1 more
doaj   +1 more source

Evidence for Nitrogen-bearing Species on Umbriel: Sourced from a Subsurface Ocean, Undifferentiated Crust, or Impactors?

The Planetary Science Journal, 2023
Near-infrared spectra of Umbriel and the other classical Uranian moons exhibit 2.2 μ m absorption bands that could result from ammonia (NH _3 ) bearing species, possibly exposed in the geologically recent past.
Richard J. Cartwright, Riley A. DeColibus, Julie C. Castillo-Rogez, Chloe B. Beddingfield, William M. Grundy, Tom A. Nordheim   +5 more
doaj   +1 more source

Comparison between Composite Index Solution Surfaces with Fuzzy Composite Index Decision Surfaces [PDF]

2019 IEEE International Conference on Fuzzy Systems (FUZZ-IEEE), 2019
Peer ...
González Cárdenas, Rubén, Nebot Castells, M. Àngela, Múgica Álvarez, Francisco   +2 more
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Surface compositions across Pluto and Charon [PDF]

Science, 2016
New Horizons unveils the Pluto system In July 2015, the New Horizons spacecraft flew through the Pluto system at high speed, humanity's first close look at this enigmatic system on the outskirts of our solar system. In a series of papers, the New Horizons team present their analysis of the encounter data downloaded so far: Moore
Grundy, W. M., Binzel, R. P., Buratti, B. J., Cook, J. C., Cruikshank, D. P., Ore, C. M. Dalle, Earle, A. M., Ennico, K., Howett, C. J. A., Lunsford, A. W., Olkin, C. B., Parker, A. H., Philippe, S., Protopapa, S., Quirico, E., Reuter, D. C., Schmitt, B., Singer, K. N., Verbiscer, A. J., Beyer, R. A., Buie, M. W., Cheng, A. F., Jennings, D. E., Linscott, I. R., Parker, J. Wm., Schenk, P. M., Spencer, J. R., Stansberry, J. A., Stern, S. A., Throop, H. B., Tsang, C. C. C., Weaver, H. A., Weigle II, G. E., Young, L. A., Team, the New Horizons Science   +34 more
openaire   +5 more sources

Surface roughness and chemical composition changes of resin-modified glass ionomer immersed in 0.2% sodium fluoride solution

Journal of Dental Sciences, 2021
Background/purpose: Glass ionomers undergo degradation when exposed to fluoride, which changes the physico-chemical characteristics of the materials.
Seung-Hwan Ong, Seung-Hoon Yoo
doaj   +1 more source

Effect of laser grooving on titanium dental implants surface composition: An in vitro study

Saudi Journal of Oral Sciences
Introduction: The aluminum and vanadium contents of the titanium-aluminum-vanadium alloy (Ti-6Al-4V) surface are known to have cytotoxic effect, the use of laser grooving was thought to produce dental implants-controlled surface roughness and a better ...
Mohamed Ahmed Alkhodary
doaj   +1 more source