Search Results - "Hans-Gerd Löhmannsröben"
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Soil Nutrient Detection for Precision Agriculture Using Handheld Laser-Induced Breakdown Spectroscopy (LIBS) and Multivariate Regression Methods (PLSR, Lasso and GPR)
Published in Sensors (Basel, Switzerland) (11-01-2020)“…Precision agriculture (PA) strongly relies on spatially differentiated sensor information. Handheld instruments based on laser-induced breakdown spectroscopy…”
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Characterization of volatile metabolites formed by molds on barley by mass and ion mobility spectrometry
Published in Journal of mass spectrometry. (01-05-2020)“…The contamination of barley by molds on the field or in storage leads to the spoilage of grain and the production of mycotoxins, which causes major economic…”
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Two-Photon Excitation Fluorescence Spectroscopy of Quantum Dots: Photophysical Properties and Application in Bioassays
Published in Journal of physical chemistry. C (03-05-2018)“…The applications of quantum dots (QDs) in two-photon (2P) excitation applications demand reliable data about their 2P absorption (2PA) cross sections (σ2PA)…”
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Comparison of Calibration Approaches in Laser-Induced Breakdown Spectroscopy for Proximal Soil Sensing in Precision Agriculture
Published in Sensors (Basel, Switzerland) (28-11-2019)“…The lack of soil data, which are relevant, reliable, affordable, immediately available, and sufficiently detailed, is still a significant challenge in…”
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Sub-ambient pressure IR-MALDI ion mobility spectrometer for the determination of low and high field mobilities
Published in Analytical and bioanalytical chemistry (01-09-2020)“…A new ion mobility (IM) spectrometer, enabling mobility measurements in the pressure range between 5 and 500 mbar and in the reduced field strength range E / N…”
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Mobile Laser-Induced Breakdown Spectroscopy for Future Application in Precision Agriculture-A Case Study
Published in Sensors (Basel, Switzerland) (15-08-2023)“…In precision agriculture, the estimation of soil parameters via sensors and the creation of nutrient maps are a prerequisite for farmers to take targeted…”
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Laser ionization ion mobility spectrometric interrogation of acoustically levitated droplets
Published in Analytical and bioanalytical chemistry (01-12-2019)“…Acoustically levitated droplets have been suggested as compartmentalized, yet wall-less microreactors for high-throughput reaction optimization purposes. The…”
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Quantum-Dot-Based Molecular Ruler for Multiplexed Optical Analysis
Published in Angewandte Chemie (International ed.) (04-10-2010)“…Nanoshapes and sizes: A time‐resolved multicolor optical analysis of Förster resonance energy transfer (FRET) from a luminescent terbium complex to different…”
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Prediction of the Ionic Liquid Influence on Propagation Rate Coefficients in Methyl Methacrylate Radical Polymerizations Based on Kamlet−Taft Solvatochromic Parameters
Published in Macromolecules (24-11-2009)“…Pulsed laser initiated polymerizations of methyl methacrylate (MMA) in the presence of ionic liquids (ILs) resulted in a strong enhancement of the propagation…”
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Atmospheric pressure chemical ionization of explosives induced by soft X-radiation in ion mobility spectrometry: mass spectrometric investigation of the ionization reactions of drift gasses, dopants and alkyl nitrates
Published in Journal of mass spectrometry. (01-08-2016)“…A promising replacement for the radioactive sources commonly encountered in ion mobility spectrometers is a miniaturized, energy‐efficient photoionization…”
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Detection of Rare Earth Elements in Minerals and Soils by Laser-Induced Breakdown Spectroscopy (LIBS) Using Interval PLS
Published in Minerals (Basel) (01-12-2021)“…The numerous applications of rare earth elements (REE) has lead to a growing global demand and to the search for new REE deposits. One promising technique for…”
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Dual Role of the Molybdenum Cofactor Biosynthesis Protein MOCS3 in tRNA Thiolation and Molybdenum Cofactor Biosynthesis in Humans
Published in The Journal of biological chemistry (18-05-2012)“…We studied two pathways that involve the transfer of persulfide sulfur in humans, molybdenum cofactor biosynthesis and tRNA thiolation. Investigations using…”
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Interaction of photosensitive surfactant with DNA and poly acrylic acid
Published in The Journal of chemical physics (28-01-2014)“…In this paper, we investigate interactions and phase transitions in polyelectrolyte-surfactant complexes formed between a cationic azobenzene-containing…”
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Real‐Time Reaction Monitoring of an Organic Multistep Reaction by Electrospray Ionization‐Ion Mobility Spectrometry
Published in ChemPlusChem (Weinheim, Germany) (01-10-2017)“…The capability of electrospray ionization (ESI)‐ion mobility (IM) spectrometry for reaction monitoring is assessed both as a stand‐alone real‐time technique…”
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Microsecond mid-infrared laser pulses for atmospheric pressure laser ablation/ionization of liquid samples
Published in Sensors and actuators. B, Chemical (01-01-2017)“…In many laser based ionization techniques with a subsequent drift time separation, the laser pulse generating the ions is considered as the start time t0…”
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High-performance liquid chromatography with electrospray ionization ion mobility spectrometry: Characterization, data management, and applications
Published in Journal of separation science (01-12-2016)“…The combination of high‐performance liquid chromatography and electrospray ionization ion mobility spectrometry facilitates the two‐dimensional separation of…”
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Detecting free hemoglobin in blood plasma and serum with luminescent terbium complexes
Published in Physical chemistry chemical physics : PCCP (21-01-2015)“…Hemolysis, the rupturing of red blood cells, can result from numerous medical conditions (in vivo) or occur after collecting blood specimen or extracting…”
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IR-MALDI ion mobility spectrometry
Published in Analytical and bioanalytical chemistry (01-09-2016)“…The novel combination of infrared matrix-assisted laser dispersion and ionization (IR-MALDI) with ion mobility (IM) spectrometry makes it possible to…”
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Preparation of Patterned Zinc Oxide Films by Breath Figure Templating
Published in Langmuir (20-07-2010)“…A large variety of microporous polymer films can be prepared by the breath figure technique. Here, we report on its use for the formation of microporous zinc…”
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Lanthanides to Quantum Dots Resonance Energy Transfer in Time-Resolved Fluoro-Immunoassays and Luminescence Microscopy
Published in Journal of the American Chemical Society (04-10-2006)“…A time-resolved fluoro-immunoassay (TR-FIA) format is presented based on resonance energy transfer from visible emitting lanthanide complexes of europium and…”
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