Results 11 to 20 of about 4,631,256 (302)

Steam-Induced Coarsening of Single-Unit-Cell MFI Zeolite Nanosheets and Its Effect on External Surface Brønsted Acid Catalysis. [PDF]

open access: yes, 2020
Commonly used methods to assess crystallinity, micro-/mesoporosity, Brønsted acid site density and distribution (in micro- vs. mesopores), and catalytic activity suggest nearly invariant structure and function for aluminosilicate zeolite MFI two ...
Abdelrahman, Omar A   +11 more
core   +2 more sources

Nanoscale surface structure–activity in electrochemistry and electrocatalysis [PDF]

open access: yes, 2019
Nanostructured electrochemical interfaces (electrodes) are found in diverse applications ranging from electrocatalysis and energy storage to biomedical and environmental sensing.
Bentley, Cameron Luke   +2 more
core   +1 more source

Li abundance/surface activity connections in solar-type Pleiades [PDF]

open access: yes, 2003
The relation between the lithium abundance, <i>A<sub>Li</sub></i>, and photospheric activity of solar-type Pleiads is investigated for the first time via acquisition and analysis of B and V-band data.
Alphenaar   +29 more
core   +3 more sources

Surface topography of hydroxyapatite affects ROS17/2.8 cells response [PDF]

open access: yes, 2002
Hydroxyapatite (HA) has been used in orthopedic, dental, and maxillofacial surgery as a bone substitute. The aim of this investigation was to study the effect of surface topography produced by the presence of microporosity on cell response, evaluating ...
Adalberto Luiz Rosa   +27 more
core   +4 more sources

Seismic sensitivity to sub-surface solar activity from 18 years of GOLF/SoHO observations [PDF]

open access: yes, 2015
Solar activity has significantly changed over the last two Schwabe cycles. After a long and deep minimum at the end of Cycle 23, the weaker activity of Cycle 24 contrasts with the previous cycles.
Garcia, R. A.   +2 more
core   +3 more sources

Synthesis and evaluation of ?-hydroxy fatty acid-derived heterocyclic compounds with potential industrial interest

open access: yesGrasas y Aceites, 2007
The reaction of 2-hydroxyheptadecanoyl chloride (2) and anthranilic acid gave 2-(1-hydroxyheptadecyl)-4H-3,1-benzoxazin-4-one (3) which was used as starting material to synthesize some condensed and non-condensed heterocyclic compounds by a reaction with
A. M. F. Eissa, R. El-Sayed
doaj   +1 more source

Collector for copper-arsenic ore flotation

open access: yesГорные науки и технологии, 2020
Copper and scheelite concentrates are produced from scheelite-sulfide ores of the Vostok-2 deposit at the Primorsky processing plant. Chalcopyrite, gold, silver, and harmful impurities (arsenopyrite, pyrrhotite) are extracted into the copper concentrate.
V. I. Ryaboy, E. D. Shepeta
doaj   +1 more source

CoRoT reveals a magnetic activity cycle in a Sun-like star [PDF]

open access: yes, 2010
The 11-year activity cycle of the Sun is a consequence of a dynamo process occurring beneath its surface. We analyzed photometric data obtained by the CoRoT space mission, showing solar-like oscillations in the star HD49933, for signatures of stellar ...
Baglin, Annie   +6 more
core   +5 more sources

Self-assembly Fundamentals in the Reconstruction of Lignocellulosic Materials: A Review

open access: yesBioResources, 2023
This review article considers processes by which the main components of wood have been reported to arrange themselves into various kinds of organized structures, at least to a partial extent.
Martin A. Hubbe   +4 more
doaj   +2 more sources

Biophysical and chemical stability of surfactant/budesonide and the pulmonary distribution following intra-tracheal administration

open access: yesDrug Delivery, 2019
Intra-tracheal instillation of budesonide using surfactant as a vehicle significantly decreased the incidence of bronchopulmonary dysplasia or death in preterm infants.
Chung-Ming Chen   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy