Results 21 to 30 of about 12,679,538 (309)

Collector for copper-arsenic ore flotation

Горные 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

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

BioResources, 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, Ramakrishna Trovagunta, Franklin Zambrano, Phoenix Tiller, Juliana Jardim   +4 more
doaj   +2 more sources

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

Drug 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, Chien-Hsiang Chang, Chih-Hua Chao, Mei-Hui Wang, Tsu-Fu Yeh   +4 more
doaj   +1 more source

Are All Single Atoms Created Equal? Surface Density Dependent Catalytic Activity of Single Pd Atoms Supported on Ceria [PDF]

, 2021
The analogy between single atom catalysts (SACs) and molecular catalysts predicts that the specific catalytic activity of these systems is constant. We provide evidence that this prediction is not necessarily true.
Konstantin, Khivantsev, Ja Hun, Kwak, Yongseon, Kim, Roger, Rousseau, Sung June, Cho, Gregory, Collinge, Mal Soon, Lee, Vassiliki-Alexandra, Glezakou, Janos, Szanyi   +8 more
core   +1 more source

A spontaneously formed plasmonic-MoTe2 hybrid platform for ultrasensitive Raman enhancement

Cell Reports Physical Science, 2021
Summary: Development of highly sensitive, stable, and repeatable surface-enhanced Raman scattering (SERS) substrates is crucial for analytical detection, which is a challenge for traditional metallic structures.
Li Tao, Zhiyong Li, Kun Chen, Yaoqiang Zhou, Hao Li, Ximiao Wang, Runze Zhan, Xiangyu Hou, Yu Zhao, Junling Xu, Teng Qiu, Xi Wan, Jian-Bin Xu   +12 more
doaj   +1 more source

Mechanical characterization and interfacial enzymatic activity of AISI 316L stainless steel after surface nanocrystallization

, 2021
Shot peening is a well-known surface severe plastic deformation treatment widely used for improving the mechanical performance of metallic materials. It was revealed that applying severe shot peening, which is characterized by high kinetic energy, has an
Fattahi, Alborz, Okan Unal, Erfan Maleki, Maleki, Erfan, Sara Bagherifard, Bagherifard, Sara, Mario Guagliano, Nasim Maleki, Unal, Okan, Alborz Fattahi, Maleki, Nasim, Guagliano, Mario   +11 more
core   +1 more source

Physicochemical studies of novel sugar fatty acid esters based on (R)-3-hydroxylated acids derived from bacterial polyhydroxyalkanoates and their potential environmental impact

Frontiers in Bioengineering and Biotechnology, 2023
Sugar fatty acids esters are popular compounds widely used in both the nutritional, cosmetic and pharmaceutical industries due to their amphiphilic structure and consequent ability to reduce the surface tension of solutions.
Wojciech Snoch, Ewelina Jarek, Dusan Milivojevic, Jasmina Nikodinovic-Runic, Maciej Guzik   +4 more
doaj   +1 more source

High-speed flow with discontinuous surface catalysis [PDF]

, 2000
In a reacting gas flow both gas-phase chemical activity and surface catalysis can increase the rate of heat transfer from the gas to a solid surface. In particular, when there is a discontinuous change in the catalytic properties of the surface, there ...
Tutty, O.R., Roberts, G.T., Amaratunga, S.R.   +2 more
core   +1 more source

The Single-Step Fabrication of a Poly (Sodium Vinylsulfonate)-Grafted Polyetheretherketone Surface to Ameliorate Its Osteogenic Activity

, 2022
Polyetheretherketone (PEEK) is considered a potential material for replacing traditional biomedical metals used in orthopedic implants because of its similar elastic modulus to human bone.
Yanyan Zheng, Lvhua Liu, Weifang Zhang, Chanjuan He, Ying Liu, Jun Dong   +5 more
core   +1 more source

Surface active properties and biological activity of novel nonionic surfactants containing pyrimidines and related nitrogen heterocyclic ring systems

Grasas y Aceites, 2008
A series of annelated pyrimidine derivatives has been synthesized via different heterocyclization reactions of suitably functionalized 6-(4-octadecyloxyphenyl)-4-oxo-2- thioxo-1,2,3,4-tetrahydropyrimidine-5-carbonitrile (4) with different electrophiles ...
R. El-Sayed
doaj   +1 more source