Results 71 to 80 of about 129,275 (339)

Exposure of metallic copper surface on Cu-Al2O3-carbon catalysts [PDF]

open access: yes, 1970
The bifunctional nature of Cu---Al2O3-on-carbon catalysts, used in the direct catalytic conversion of ethanol to ethyl acetate, prompted an examination of the dispersion of Cu on the composite catalyst. For this, the N2O-method of Osinga et al.
Menon, P.G., Prasad, J.
core   +4 more sources

2D MOF with Intrinsic Porosity for Colorimetric Volatile Organic Compounds (VOCs) Detection

open access: yesAdvanced Materials, EarlyView.
An uncommon 2D MOF with intrinsic in‐plane porosity that can be mechanically exfoliated undergoes a distinct and reversible colour change upon exposure to various volatile organic compounds. ABSTRACT In this work, we report an uncommon 2D metal–organic framework (MOF) with intrinsic in‐plane porosity that undergoes a distinct and reversible colour ...
Sergio R. Gamarra   +4 more
wiley   +1 more source

Surveying the Emissions of Benzene , Toluene , Ethyl Benzene and Xylene in Indoor Air of Emam Hossien Hospital of Shahrood

open access: yesبیمارستان, 2015
Background: Exposure to some volatile organic compounds such as benzene, toluene, ethyl benzene and xylene cause adverse effects on organs and nervous system and moreover causes spread of diseases such as cancer , leukemia which would result in ...
javad vatani shoaa   +2 more
doaj  

The Use of C2–C5 Hydrocarbons for Production of Gasoline Components

open access: yesEurasian Chemico-Technological Journal, 2004
A conversion of light hydrocarbons (C2–C5) over HZSM-zeolite-containing catalysts modified by the VA Group metals was studied. The process was carried out in a flow reactor at varying temperature from 350 to 400 °C, pressure – 0.1-0.5 MPa and space ...
G.D. Zakumbaeva   +5 more
doaj   +1 more source

Self‐Assembled Monolayers in p–i–n Perovskite Solar Cells: Molecular Design, Interfacial Engineering, and Machine Learning–Accelerated Material Discovery

open access: yesAdvanced Materials, EarlyView.
This review highlights the role of self‐assembled monolayers (SAMs) in perovskite solar cells, covering molecular engineering, multifunctional interface regulation, machine learning (ML) accelerated discovery, advanced device architectures, and pathways toward scalable fabrication and commercialization for high‐efficiency and stable single‐junction and
Asmat Ullah, Ying Luo, Stefaan De Wolf
wiley   +1 more source

Determination of chlorinated phenols in brewing liquor and beer using SPE.

open access: yesKvasný průmysl, 2008
A method for the determination of chlorinated phenols in brewing liquor and beer is described. Solid phase extraction technique for the sample preconcentration was used.
Tomáš HORÁK   +4 more
doaj   +1 more source

1,4-Bis[(2-ethyl-1H-benzimidazol-1-yl)methyl]benzene [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2011
In the title mol-ecule, C(26)H(26)N(4), the central benzene ring forms dihedral angles of 89.9 (2) and 85.4 (2)° with the two benzimidazole rings.
Qiang Wang   +3 more
openaire   +3 more sources

Fire-resistant phosphorus containing polyimides and copolyimides [PDF]

open access: yes, 1985
Phosphorus-containing polyimides and copolyimides are synthesized in a two-step polycondensation reaction from 1- (diorganooxyphosphonl)methly 2,4- and 2,6-diaminobenzenes and tetracarboxylic anhydride. The diorgano position of the diorganooxyphosphonyl
Mikroyannidis, J. A.
core   +1 more source

A TGA/FTIR and Mass Spectral Study on the Thermal Degradation of Bisphenol A Polycarbonate [PDF]

open access: yes, 2004
The thermal degradation of polycarbonate under nitrogen was studied using TGA/FTIR, GC/MS and LC/MS as a function of mass loss. The gases evolved during degradation were inspected by in situ FTIR and then the evolved products were collected and analysed ...
Jang, Bok Nam, Wilkie, Charles A.
core   +2 more sources

Balanced Expression of the Diiron Oxygenase BioE Is Essential for Biotin Homeostasis in Elizabethkingia meningoseptica

open access: yesAdvanced Science, EarlyView.
BioE is a new diiron oxygenase that catalyzes the conversion of long‐chain acyl groups into pimeloyl thioester, initiating biotin synthesis. The overexpression of EmBioE disrupts lipid metabolic homeostasis, requiring repressor BioL to maintain a balance between long‐chain fatty acids and biotin synthesis.
Meng Zhang   +9 more
wiley   +1 more source

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