TY  - JOUR
A1  - Wiesen, Sebastian
A1  - Tippkötter, Nils
A1  - Muffler, Kai
A1  - Suck, Kirstin
A1  - Sohling, Ulrich
A1  - Ruf, Friedrich
A1  - Ulber, Roland
T1  - Adsorption of fatty acids to layered double hydroxides in aqueous systems
JF  - Adsorption
N2  - Due to their anion exchange characteristics, layered double hydroxides (LDHs) are suitable for the detoxification of aqueous, fatty acid containing fermentation substrates. The aim of this study is to examine the adsorption mechanism, using crude glycerol from plant oil esterification as a model system. Changes in the intercalation structure in relation to the amount of fatty acids adsorbed are monitored by X-ray diffraction and infra-red spectroscopy. Additionally, calcination of LDH is investigated in order to increase the binding capacity for fatty acids. Our data propose that, at ambient temperature, fatty acids can be bound to the hydrotalcite by adsorption or in addition by intercalation, depending on fatty acid concentration. The adsorption of fatty acids from crude glycerol shows a BET-like behavior. Above a fatty acid concentration of 3.5 g L−1, intercalation of fatty acids can be shown by the appearance of an increased interlayer spacing. This observation suggests a two phase adsorption process. Calcination of LDHs allows increasing the binding capacity for fatty acids by more than six times, mainly by reduction of structural CO32−.
Y1  - 2015
VL  - 21
IS  - 6-7
SP  - 459
EP  - 466
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Hough, Lindsay B.
A1  - Nalwalk, Julia W.
A1  - Ding, Xinxin
A1  - Scheer, Nico
T1  - Opioid Analgesia in P450 Gene Cluster Knockout Mice: A Search for Analgesia-Relevant Isoforms
JF  - Drug Metabolism and Disposition
Y1  - 2015
U6  - https://doi.org/10.1124/dmd.115.065490
SN  - 1521-009x
VL  - 43
IS  - 9
SP  - 1326
EP  - 1330
ER  - 
TY  - JOUR
A1  - Baringhaus, Ludwig
A1  - Gaigall, Daniel
T1  - On an independence test approach to the goodness-of-fit problem
JF  - Journal of Multivariate Analysis
N2  - Let X₁,…,Xₙ be independent and identically distributed random variables with distribution F. Assuming that there are measurable functions f:R²→R and g:R²→R characterizing a family F of distributions on the Borel sets of R in the way that the random variables f(X₁,X₂),g(X₁,X₂) are independent, if and only if F∈F, we propose to treat the testing problem H:F∈F,K:F∉F by applying a consistent nonparametric independence test to the bivariate sample variables (f(Xᵢ,Xⱼ),g(Xᵢ,Xⱼ)),1⩽i,j⩽n,i≠j. A parametric bootstrap procedure needed to get critical values is shown to work. The consistency of the test is discussed. The power performance of the procedure is compared with that of the classical tests of Kolmogorov–Smirnov and Cramér–von Mises in the special cases where F is the family of gamma distributions or the family of inverse Gaussian distributions.
KW  - Goodness-of-fit test
KW  - Independence test
KW  - Parametric bootstrap
KW  - Vapnik–Čhervonenkis class
KW  - Gamma distribution
Y1  - 2015
U6  - https://doi.org/10.1016/j.jmva.2015.05.013
SN  - 0047-259X
VL  - 2015
IS  - 140
SP  - 193
EP  - 208
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Klinge, Uwe
A1  - Otto, Jens
A1  - Mühl, Thomas
T1  - High Structural Stability of Textile Implants Prevents Pore Collapse and Preserves Effective Porosity at Strain
JF  - BioMed Research International
Y1  - 2015
U6  - https://doi.org/10.1155/2015/953209
SN  - 2314-6133 (Print)
SN  - 2314-6141 (Online)
N1  - Article ID: 953209
VL  - 2015
ER  - 
TY  - JOUR
A1  - Helmig, Ilka
T1  - A few (hi)stories about french illustration
JF  - Slanted
Y1  - 2015
SN  - 1867-6510
IS  - 25 (Paris)
SP  - 210
EP  - 217
PB  - Slanted Publishers
CY  - Karlsruhe
ER  -