Results 41 to 50 of about 115,812 (293)

Structural and Textural Properties of Al/Cu- and Al/Zn-Pillared Clays for Ethanol Conversion

open access: yesCrystals
A montmorillonite sample was pillared using mixed solutions of Al/Cu and Al/Zn as the pillaring agent. Al/Cu- and Al/Zn-pillared clays were applied in an ethanol conversion reaction.
Lamara M. dos Santos   +4 more
doaj   +1 more source

Application Research on the Adsorption of Cadmium Ion in Wastewater by Zeolite Molecular Sieve

open access: yesChemical Engineering Transactions, 2018
In this paper, the synthetic zeolite molecular sieve is used as the adsorbent to study the application of zeolite molecular sieves for the adsorption of cadmium ions in wastewater.
Minghua Wang, Honglan Cai, Jiang Zhang
doaj   +1 more source

Separation of steranes and hopanes by domestic X-type molecular sieves

open access: yesShiyou shiyan dizhi, 2021
Domestic 10X-type and 13X-type molecular sieves were used for the adsorption and desorption experiments of steranes and hopanes, and their stable carbon isotopic fractionation by the two kinds of molecular sieves during separation process was discussed ...
Erting LI   +7 more
doaj   +1 more source

FUNCTIONAL PEARL : lazy wheel sieves and spirals of primes [PDF]

open access: yes, 1997
The popular method of enumerating the primes is the Sieve of Eratosthenes. It can be programmed very neatly in a lazy functional language, but runs rather slowly.
Runciman, C.
core   +1 more source

Density Functional Theory Study on the Effect of Isomorphic Substitution of FAU Molecular Sieve on N2 Adsorption Performance

open access: yesAdvances in Condensed Matter Physics, 2021
Low pressure and anoxia are the main characteristics of the environment in the Tibetan Plateau, which means people living there have a large demand for oxygen to reduce the symptoms of altitude sickness.
Mengya Wang   +9 more
doaj   +1 more source

Hydroisomerization of n-Hexadecane Over Nickel-Modified SAPO-11 Molecular Sieve-Supported NiWS Catalysts: Effects of Modification Methods

open access: yesFrontiers in Chemistry, 2022
The complexation-excessive impregnation modification method, which was original in this study, and the ion-exchange method and the in situ modification method were used to synthesize Ni-modified SAPO-11 molecular sieves.
Xiaojun Dai   +4 more
doaj   +1 more source

Molecular sieves control contamination and and insulate in thermal regenerators - A concept [PDF]

open access: yes, 1970
Zeolitic molecular sieves prolong the lives of cryogenic engines by preventing contamination of the thermal regenerators on the cold ends of closed-cycle engines. Sieves also serve as thermal insulators by preventing conduction of heat along regenerators
Gasser, M. G.
core   +1 more source

Effects of the Fluid Replacement Method During Online Hemodiafiltration on the Solute Removal Performance and Biocompatibility Using the Asymmetric Cellulose Triacetate Membrane

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Pre‐dilution online hemodiafiltration (Pre‐HDF) is predominantly used in Japan, whereas post‐dilution online HDF (Post‐HDF) is more common in Europe. An asymmetric cellulose triacetate (ATA) membrane may improve biocompatibility.
Kenji Sakurai   +4 more
wiley   +1 more source

Graphene-like Membranes: From Impermeable to Selective Sieves

open access: yes, 2014
Recently, it was proposed that graphene membranes could act as impermeable atomic structures to standard gases. For some other applications, a higher level of porosity is needed, and the so-called Porous Graphene (PG) and Biphenylene Carbon (BPC ...
Brunetto, G., Galvao, D. S.
core   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

open access: yesFEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho   +3 more
wiley   +1 more source

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