Helmholtz Institute Freiberg for Resource Technology
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A user-friendly R Platform for Optimizing Mineral Processing
No full textAn open-source and user-friendly platform for using design of experiments for optimizing mineral processing. No specific knowledge of programming languages is required for using the platform. Depending on the user needs, the platform suggests the optimal experimental strategy with a minimum number of runs required. Different types of experimental designs such as screening, full factorial and central composite designs are currently available. The R shiny app can be accessed via: https://hifgeomet.shinyapps.io/Optimization_Tool
Data publication: Multisite Dopamine Sensing with Femtomolar Resolution Using a CMOS Enabled Aptasensor Chip
No full textData describe the graphs summarized into the figures with a possibility of opening the figures and direct data access
Data Publication: Enzymatic Hydrolysis of Triglycerides at the Water–Oil Interface Studied via Interfacial Rheology Analysis of Lipase Adsorption Layers
No full textThe enzymatic hydrolysis of sunflower oil occurs at the water–oil interface. Therefore, the characterization of dynamic interfacial phenomena is essential for understanding the related mechanisms for process optimizations. Most of the available studies for this purpose deal with averaged interfacial properties determined via reaction kinetics and dynamic surface tension measurements. In addition to the classical approach for dynamic surface tension measurements, here, the evolution of the dilational viscoelasticity of the lipase adsorbed layer at the water–oil interface is characterized using profile analysis tensiometry. It is observed that lipase exhibits nonlinear dilational rheology depending on the concentration and age of the adsorbed layer. For reactive water–oil interfaces, the response of the interfacial tension to the sinusoidal area perturbations becomes more asymmetric with time. Surface-active products of the enzymatic hydrolysis of triglycerides render the interface less elastic during compression compared to the expansion path. The lipolysis products can facilitate desorption upon compression while inhibiting adsorption upon expansion of the interface. Lissajous plots provide an insight into how the hysteresis effect leads to different interfacial tensions along the expansion and compression routes. Also, the droplet shape increasingly deviates from a Laplacian shape, demonstrating an irreversible film formation during aging and ongoing hydrolysis reaction, which supports our findings via interfacial elasticity analysis.Lipase is an enzyme responsible for the hydrolysis of
triglycerides.1 Triglycerides, or triacylglycerols, are esters with
a glycerol backbone bound to three fatty acid chains.2
Naturally occurring triglycerides are from plants and animals.3
A lipase molecule can cleave the triglyceride ester bonds,
producing diglycerides, monoglycerides, glycerol, and free fatty
acids.
Data publication: Tailoring pulsed laser deposition fabricated copper oxide film by controlling plasma parameters
No full textPositron annihilation lifetime spectroscopy data from beamtime at ELB
Data publication: Precise measurement of gas parameters in a realistic RPC configuration: the currently used R134a gas and a potential alternative eco-gas
No full textTheses data are taken during the measurement and folded to support the research in the related publication
Data publication: Importance of valence-band anharmonicity and carrier distribution for third- and fifth-harmonic generation in Si:B pumped with intense terahertz pulses
No full textHigh-hamonic spectra induced by FEL pumping; FTIR and THz transmission spectra of utilized spectral filter
(Data set)High-pressure investigations in CH3NH3PbX3 ( X = I, Br, and Cl): Suppression of ion migration and stabilization of low-temperature structure
No full textThe raw data can be obtained from the corresponding author
Martin Dressel: [email protected]
Data publication: Optimal test-kit-based intervention strategy of epidemic spreading in heterogeneous complex networks
No full textThis contains all the python script and related data required for reproducing the results presented in the articl
Syntetic Spectra Data used in publication "Differential evolution optimization of Rutherford back-scattering spectra"
No full textThe zip-file contains all synthetic spectra as used for and described in the publication "Differential evolution optimization of Rutherford back-scattering spectra" and all simulation input files for the code RUTHELDE presented therein. Naming according to the text in the paper. All files are in human readable ASCII format. The simulation input files can be best viewed with any kind of JSON file editor
Data: Temperature Driven Transformation of the Flexible Metal-Organic Framework DUT-8(Ni)
No full textThese are the raw data of "Temperature Driven Transformation of the Flexible Metal-Organic Framework DUT-8(Ni)"
DUT-8(Ni) metal-organic framework belongs to the family of flexible pillared layer materials. The desolvated framework can be obtained in the open pore form (op) or in the closed pore form (cp), depending on the crystal size regime. In the present work, we report on the behaviour of desolvated DUT-8(Ni) at elevated temperatures.
For both, op and cp variants, heating causes a structural transition, leading to an new, crystalline compound, containing two
interpenetrated networks. The state of the framework before transition (op vs. cp) influences the transition temperature: the small particles of the op phase transform at significantly lower temperature in comparison to the macroparticles of the cp phase, transforming close to the decomposition temperature. The new compound, confined closed pore phase (ccp), was characterized by powder X-ray diffraction and spectroscopic techniques, such as IR, EXAFS, and positron annihilation lifetime spectroscopy (PALS). Thermal effects of structural cp to ccp transitions were studied using differential scanning calorimetry (DSC), showing an overall exothermic effect of the process, involving bond breaking and reformation. Theoretical calculations reveal the energetics, driving the observed temperature induced phase transition.This work was financially supported by DFG (Deutsche
Forschungsgemeinschaft) under contracts FOR 2433 and in
project numbers 448809307, 464857745 (AT 289/1-1 and KA
1698/41-1) and 419941440. PP and JDE used high performance
computing facilities of ZIH Dresden. The EXAFS experiments
were conducted at the BL11S2 of Aichi Synchrotron Radiation
Center, Aichi Science & Technology Foundation, Aichi, Japan
(Proposal No. 2020D5036). We acknowledge DESY (Hamburg,
Germany), a member of the Helmholtz Association HGF, for the
provision of experimental facilities. Parts of this research were
carried out using beamline P02.1 at PETRA III. ZH acknowledges
the support from the Swedish Research Council Formas (2020-
00831). J.D.E. is supported by a Ramsay Fellowship from the
University of Adelaide