Results 31 to 40 of about 21,717,715 (348)
Molecules, 2021 Fluorescent metal–organic frameworks (MOFs) are ideal materials for sensors because of their adjustable pore size and functional groups, which provide them with favorable metal ion selective recognition.
Li-Li Xu +4 more
doaj +1 more source
Consistent and Flexible Selectivity Estimation for High-dimensional Data
, 2020 Selectivity estimation aims at estimating the number of database objects that satisfy a selection criterion. Answering this problem accurately and efficiently is essential to many applications, such as density estimation, outlier detection, query ...
Ishikawa, Yoshiharu +7 more
core +1 more source
A one-step Cu/ZnO Quasi-Homogeneous Catalyst for DME Production from Syn-gas [PDF]
, 2016 Colloidal Cu/ZnO nanoparticles combine with γ-Al2O3 to form promising hybrid catalysts for the direct synthesis of dimethyl ether (DME) in liquid phase, showing high activity, selectivity and stability.
Garcia Trenco, A +3 more
core +1 more source
Molecules, 2023 Developing new organic reactions with excellent atom economy and high selectivity is significant and urgent. Herein, by ingeniously regulating the reaction conditions, highly selective transformations of propargylamines have been successfully implemented.
Zheng-Guang Wu +7 more
doaj +1 more source
Effect of zeolite topology and reactor configuration on the direct conversion of CO2 to light olefins and aromatics [PDF]
, 2019 The direct transformation of CO2 into high-value-added hydrocarbons (i.e., olefins and aromatics) has the potential to make a decisive impact in our society. However, despite the efforts of the scientific community, no direct synthetic route exists today
Abou-Hamad, Edy +11 more
core +1 more source
Manipulating ionization path in a Stark map: Stringent schemes for the selective field ionization in highly excited Rb Rydberg atoms [PDF]
, 2002 We have developed a quite stringent method in selectivity to ionize the low angular- momentum ($\ell$) states which lie below and above the adjacent manifold in highly excited Rb Rydberg atoms.
Ducas +25 more
core +2 more sources
High-Selectivity Polysiloxane Membranes for Gases and Liquids Separation (A Review)
Petroleum chemistry (1991), 2021 The most promising approaches to making polysiloxane-based membranes more selective are considered. These approaches can be subdivided into three groups: (1) development of new membrane materials by copolymerization, (2) modification of the polysiloxane ...
E. Grushevenko, I. Borisov, A. Volkov
semanticscholar +1 more source
Ppb-Level NO2 Sensor with High Selectivity Fabricated by Flower-like Au-Loaded In2O3
Chemosensors, 2023 With increasingly serious environmental problems caused by the improvement in people’s living standards, the number of cars has increased sharply in recent years, which directly leads to the continuous increase in the concentration of NO2 in the air. NO2
Ji Zhang +3 more
doaj +1 more source
Fabrication of a Self-Assembled and Flexible SERS Nanosensor for Explosive Detection at Parts-Per-Quadrillion Levels from Fingerprints [PDF]
, 2018 Apart from high sensitivity and selectivity of surface-enhanced Raman scattering (SERS)-based trace explosive detection, efficient sampling of explosive residue from real world surfaces is very important for homeland security applications.
Goodpaster, John V. +5 more
core +1 more source
Nanomaterials, 2018 Citric acid capped CdS quantum dots (CA-CdS QDs), a new assembled fluorescent probe for copper ions (Cu2+), was synthesized successfully by a simple hydrothermal method.
Zhezhe Wang +7 more
doaj +1 more source