Results 51 to 60 of about 40,083 (160)

Group extraction of organic compounds present in liquid samples [PDF]

open access: yes, 1976
An extraction device is disclosed comprising a tube containing a substantially inert, chemically non-reactive packing material with a large surface area to volume ratio.
Jahnsen, Vilhelm J.
core   +1 more source

Review on the development of truly portable and in-situ capillary electrophoresis systems

open access: yes, 2013
Capillary electrophoresis (CE) is a technique which uses an electric field to separate a mixed sample into its constituents. Portable CE systems enable this powerful analysis technique to be used in the field.
Cranny, Andy   +6 more
core   +1 more source

S2k guideline occupational skin products: skin protection creams, skin cleansing and skin care products

open access: yesJDDG: Journal der Deutschen Dermatologischen Gesellschaft, Volume 24, Issue 5, Page 700-711, May 2026.
Summary The AWMF S1 guideline 013/056 “Occupational Skin Products: Protective Creams, Skin Cleansers and Skin Care Products” from 2014 has been revised and upgraded to S2K level. The aim was to develop a decision aid for the optimal use of occupational skin products for the prevention of hand eczema in the workplace.
Michal Gina   +16 more
wiley   +1 more source

Utilizing Imogolite Nanotubes as a Tunable Catalytic Material for the Selective Isomerization of Glucose to Fructose [PDF]

open access: yes, 2018
The isomerization of glucose to fructose is an important step in the conversion of biomass to valuable fuels and chemicals. A key challenge for the isomerization reaction is achieving high selectivity towards fructose using recyclable and inexpensive ...
Olson, Nathaniel
core  

Development of methods for preparing fly ash for separation by activation [PDF]

open access: yes, 2018
Purpose. Isolation of the aluminosilicate fraction from fly ash, study of physical and mechanical properties of binders obtained from TPP wastes. Methods.
Netyaga, O.B.   +8 more
core  

Microemulsion with ester in mixed surfactants and its association with betulinic acid [PDF]

open access: yes, 2000
The phase behaviour of Tween 80IBrij 301H20 and Tween 80/Brij 30/glycerol was constructed to determine the isotropic region produced by the mixed surfactants (MS) - Tween 80:Brij 30 - in aqueous and nonaqueous systems.
Wan Mahamod, Wan Rusmawati
core  

Analysis Of Phthalates Via Spectrophotometry In Environmental Samples Using Non-Ionic Silicone Surfactant Mediated Cloud Point Extraction [PDF]

open access: yes, 2017
Determination of phthalates in environmental matrices become crucial in recent years due to the growing international concern about the health effects of phthalates. In the present study, a greener method based on cloud point extraction was developed for
Ooi, Pei Wan
core  

Efficient uses of some types of surfactant products [PDF]

open access: yes
The present work is part of a more complex study referring to chemical substances known under the name of „surfactants” or „tensioactive agents” which can alter the conductivity of fibers, textile materials, etc.
Camelia Georgeta CALIN   +2 more
core  

Sub-ambient CO oxidation over Au/MO x/CeO 2-Al 2O 3 (M = Zn or Fe) [PDF]

open access: yes, 2012
A series of ZnO and Fe 2O 3 modified ceria/alumina supports and their corresponding gold catalyst were prepared and studied in the CO oxidation reaction.
José Antonio Odriozola   +4 more
core   +1 more source

Characterization of LaMnAl11O19 by FT-IR spectroscopy of adsorbed NO and NO/O-2 [PDF]

open access: yes, 2005
Cataloged from PDF version of article.The nature of the NOx species produced during the adsorption of NO at room temperature and during its coadsorption with oxygen on LaMnAl11O19 sample with magnetoplumbite structure obtained by a sol–gel process has ...
Agiral, A.   +4 more
core   +1 more source

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