Results 101 to 110 of about 37,643 (291)

Sorption Properties of Ordered Mesoporous Silica for Toluene and Ethyl Acetate

open access: yesAdsorption Science & Technology, 2011
The sorption properties of SBA-15 and MCM-41 for toluene and ethyl acetate were investigated by temperature programmed desorption (TPD) techniques and an analysis of breakthrough curves.
Weiyang Jin   +5 more
doaj   +1 more source

THE INFLUENCE OF Si/Al MOLE RATIO OF PRECURSOR SOLUTION ON THE STRUCTURAL PROPERTIES OF MCM-41 FROM FLY ASH

open access: yesIndonesian Journal of Chemistry, 2010
The synthesis of MCM-41 from fly ash was done hydrothermally at 100°C for 72 hours using supernatant of fly ash solution, sodium silicate, tetramethylammonium hydroxide (TMAOH) and cetyltrimethyl-ammonium hydroxide (CTMAOH) surfactants.
Sutarno Sutarno   +2 more
doaj   +1 more source

Neonatal developmental and epileptic encephalopathy with movement disorder and arthrogryposis: A shared phenotype across brain‐expressed sodium channelopathies

open access: yesEpilepsia, EarlyView.
Abstract Objective Neonatal developmental and epileptic encephalopathy with movement disorder and arthrogryposis (NDEEMA) represents the most severe end of the gain‐of‐function (GOF) SCN1A disorder spectrum. Sporadic cases of congenital arthrogryposis have also been reported in individuals with SCN2A‐, SCN3A‐, and SCN8A‐related developmental and ...
Sopio Gverdtsiteli   +43 more
wiley   +1 more source

Desorption Kinetics and Mechanisms of CO2 on Amine-Based Mesoporous Silica Materials

open access: yesEnergies, 2017
Tetraethylenepentamine (TEPA)-based mesoporous MCM-41 is used as the adsorbent to determine the CO2 desorption kinetics of amine-modified materials after adsorption. The experimental data of CO2 desorption as a function of time are derived by zero-length
Yang Teng   +3 more
doaj   +1 more source

Associations Between Avoidant/Restrictive Food Intake Disorder Dimensions and Obsessive‐Compulsive Symptomatology

open access: yesEuropean Eating Disorders Review, EarlyView.
ABSTRACT Objective Although obsessive‐compulsive disorder (OCD) commonly co‐occurs with anorexia nervosa and bulimia nervosa, less is known about its relationship with avoidant/restrictive food intake disorder (ARFID) dimensions. Whether associations between ARFID dimensions and OCD differ by sex is also unclear.
Mariana Valdez Aguilar   +15 more
wiley   +1 more source

IN-SITU XRD STUDIES OF THERMAL STABILITY OF PURE SILICA AND Ti-MCM-41 MATERIALS [PDF]

open access: yes, 2007
In this work we present a study on the thermal stability of siliceous and titanium containing ordered mesoporous materials with MCM-41 structure, prepared by direct synthesis at ambient temperature and pressure, as previously described [1].
Alves, Eduardo   +4 more
core  

Immobilized Vanadium Compounds within Nanoreactors of Al-MCM-41 as Catalyst for Epoxidation of Alkenes [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2010
VO2+ and its complexes with ethylenediamine (en), acetylacetonate (acac), 2, 2’-bipyridine(bpy) ligands, immobilized within nanoreactors of Al-MCM-41 designated as VO2+/Al-MCM-41 or VOL2/Al-MCM-41, were prepared and characterized by X-ray powder ...
F Farzaneh
doaj  

Return to sport after meniscectomy, meniscal repair, and meniscal allograft transplantation for meniscal lesions in athletes: A systematic review and meta‐analysis

open access: yesKnee Surgery, Sports Traumatology, Arthroscopy, EarlyView.
Abstract Purpose The aim of this systematic review and meta‐analysis was to quantify and compare the evidence on the results obtained with the surgical treatments for meniscal lesions in athletes. Methods A literature search was conducted on PubMed, Cochrane and Web of Science in August 2025 according to the PRISMA guidelines.
Alessandro Bensa   +5 more
wiley   +1 more source

Generalist‐pollinated Arabis alpina exhibits floral scent variation at multiple scales

open access: yesNordic Journal of Botany, EarlyView.
Plants that depend on animals for reproduction often use complex floral traits to attract pollinators. Floral scent is recognized as part of the pollinator attraction module and can be shaped by plant‐pollinator interactions. In recent decades, research has started to reveal the dynamic properties of floral scent, identifying patterns of spatial and ...
Hanna Thosteman   +5 more
wiley   +1 more source

Effect of calcination parameters on structural properties of Ti-MCM-41 materials synthesized at room temperature [PDF]

open access: yes, 2006
In this work is presented a study of the effect of calcination parameters namely, heating rate, calcination temperature, total calcination time and time at final temperature, on pore structural properties of Ti-MCM-41 materials.
Carrott, Manuela   +2 more
core  

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