A5036143020- Iron oxide chemistry and applications
- Clay minerals and soil interactions
- Mine drainage and remediation techniques
- Mycorrhizal Fungi and Plant Interactions
- Arsenic contamination and mitigation
- Soil Carbon and Nitrogen Dynamics
- Radioactive element chemistry and processing
- Heavy metals in environment
- Electrochemical Analysis and Applications
- Geochemistry and Elemental Analysis
- Minerals Flotation and Separation Techniques
- Forest Ecology and Biodiversity Studies
- Chemical and Physical Properties in Aqueous Solutions
- Phosphorus and nutrient management
- Soil and Water Nutrient Dynamics
- Nuclear Physics and Applications
- X-ray Diffraction in Crystallography
- Geology and Paleoclimatology Research
- Advanced Adaptive Filtering Techniques
- Enzyme-mediated dye degradation
- Geochemistry and Geologic Mapping
- Digital Games and Media
- Metal Extraction and Bioleaching
- Crystallization and Solubility Studies
- Microbial Community Ecology and Physiology
Lund University
2015-2024
Chalmers University of Technology
2024
Swedish Transport Administration
2024
Ericsson (Sweden)
2014-2023
Linköping University
2020
Thinfilm (Sweden)
2020
Gavagai (Sweden)
2018
Umeå University
2005-2014
Japan External Trade Organization
1990-2012
Perstorp (Sweden)
2011
Summary Ectomycorrhizal fungi are thought to have a key role in mobilizing organic nitrogen that is trapped soil matter ( SOM ). However, the extent which ectomycorrhizal decompose and mechanism by they do so remain unclear, considering lost many genes encoding lignocellulose‐degrading enzymes present their saprotrophic ancestors. Spectroscopic analyses transcriptome profiling were used examine mechanisms five species of fungi, representing at least four origins symbiosis, extracted from...
Many trees form ectomycorrhizal symbiosis with fungi. During symbiosis, the tree roots supply sugar to fungi in exchange for nitrogen, and this process is critical nitrogen carbon cycles forest ecosystems. However, extents which can liberate modify soil organic matter mechanisms by they do so remain unclear since have lost many enzymes litter decomposition that were present their free-living, saprotrophic ancestors. Using time-series spectroscopy transcriptomics, we examined ability of two...
The interaction of aqueous U(VI) with galena and pyrite surfaces under anoxic conditions has been studied by solution analysis spectroscopic methods. data indicate that uranyl uptake is strongly dependent on pH; maximum (>98%) occurs above a pH range between 4.8 5.5, depending experimental conditions. Increasing the sorbate/sorbent ratio results in relative decrease slower sorption kinetics. Auger electron spectroscopy (AES) indicates an inhomogeneous distribution sorbed uranium at surface....
Location-based information systems allow the user to access in relation user's position geographical space. This paper outlines navigational and social aspects of such systems. It is argued that location-based must users participate as content providers order achieve a dynamic Moreover, these commercial private annotate space with on mass-scale, filtering techniques will become essential prevent overload disturbance. We present number content-based support this. discuss implications for...
As a component of herbicides, the fate glyphosate (PMG) in environment is significant interest. The nature PMG adsorption on mineral surfaces plays role degradation PMG. goethite (alpha-FeOOH) has been studied as function pH and concentration. Adsorption was investigated with batch experiments, attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR), X-ray photoelectron (XPS). N 1s line XPS spectra showed deprotonation amine group (NH2+) increasing pH. IR analyses no...
Activation analysis of mercury content in axial musculature pike (Esox lucius) has been used the present study as a means estimating level water environment. The concentration factor from to is order 3000 or more. relation between and weight age fish specimens discussed. By graphical method values for representing 1 kilogram have calculated number localities geographical comparison. effect industrial contamination demonstrated by comparison samples above below localities, where emission...
Pulmonary surfactant contains two hydrophobic polypeptides, SP-B and SP-C, with known amino acid sequences truncated subforms lacking the N-terminal residues. Treatment of SP-C KOH releases fatty acids (palmitic to more than 85%) in molar ratios 1.8-2.0 relative polypeptide. Furthermore, plasma-desorption mass spectrometry shows native both intact types be monomers masses about 500 units higher those expected for polypeptide chains. After treatment KOH, trimethylamine, or dithioerythritol,...
Summary Soils in boreal forests contain large stocks of carbon. Plants are the main source this carbon through tissue residues and root exudates. A major part exudates allocated to symbiotic ectomycorrhizal fungi. In return, plant receives nutrients, particular nitrogen from mycorrhizal To capture nitrogen, fungi must at least partly disrupt recalcitrant organic matter–protein complexes within which is embedded. This disruption process poorly characterized. We used spectroscopic analyses...
Associations with functional groups of natural organic matter (NOM) are great importance for bioavailability, toxicity, and mobility trace metals in soils waters. In this study, the coordination chemistry copper, Cu(II), dissolved (DOM) from streams was investigated by extended X-ray absorption fine structure (EXAFS) spectroscopy. both soil (SOM) DOM (990−11 000 μg Cu g-1 dry weight, pH 2.8−6.3), Cu(II) coordinated 4 oxygen/nitrogen (O/N) atoms at a distance 1.92−1.95 Å first shell. These...
A fundamental precept of geochemistry is that arsenate coordinates at mineral surfaces in a predominately bridging-bidentate fashion. We show this incorrect for the model system, adsorbed surface goethite (alpha-FeOOH), using combination XRD, EXAFS, and IR spectroscopic results. report crystal structure pentaamminecobalt(III) arsenate, which consists monodentate-coordinated metal-arsenato complexes have Co-As distances only 3.25 A. This result implies metal-arsenic are not diagnostic...
Abstract The majority of nitrogen in forest soils is found organic matter–protein complexes. Ectomycorrhizal fungi (EMF) are thought to have a key role decomposing and mobilizing from such However, little known about the mechanisms governing these processes, how they regulated by carbon host plant availability more easily available forms sources. Here we used spectroscopic analyses transcriptome profiling examine presence or absence glucose and/or ammonium regulates decomposition litter...
Abstract The hydroxyl radical (·OH) is a powerful oxidant that produced in wide range of environments via the Fenton reaction (Fe 2+ + H 2 O → Fe 3+ ·OH OH - ). reactants are formed from reduction and , which may be promoted by organic reductants, such as hydroquinones. aim this study was to investigate extent formation reactions between 2,6-dimethoxyhydroquinone (2,6-DMHQ) iron oxide nanoparticles. We further compared reactivities ferrihydrite goethite investigated effects concentration pH...
Fourier-transform infrared (FT-IR) spectroscopy combined with microscopy enables chemical information to be acquired from native plant cell walls high spatial resolution. Combined a 64 × focal plane array (FPA) detector, 4096 spectra can simultaneously obtained 0.3 mm image; each spectrum represents compositional and structural 'fingerprint' of all wall components. For optimal use analysis such large amount information, multivariate approaches are preferred. Here, FT-IR microspectroscopy FPA...
Developing applications for IoT and Cloud is difficult a number of reasons; even without considering the inherent complexity distributed computing, there are several competing platforms, programming languages communication protocols. It can be argued that this holding back industry as whole: Applications to write, deploy manage. In position paper we present Calvin, hybrid framework combining ideas from Actor model Flow Based Computing. We show by dividing into four well-defined aspects –...
Summary Boreal trees rely on their ectomycorrhizal fungal symbionts to acquire growth‐limiting nutrients, such as nitrogen (N), which mainly occurs proteins complexed in soil organic matter ( SOM ). The mechanisms for liberating this N are unclear fungi have lost many genes encoding lignocellulose‐degrading enzymes present saprotrophic ancestors. We hypothesized that hydroxyl radicals ˙ OH ), produced by the fungus Paxillus involutus during growth , involved N. was grown 7 d N‐containing or...
Abstract Litter decomposing Agaricales play key role in terrestrial carbon cycling, but little is known about their decomposition mechanisms. We assembled datasets of 42 gene families involved plant-cell-wall from seven newly sequenced litter decomposers and 35 other Agaricomycotina members, mostly white-rot brown-rot species. Using sequence similarity phylogenetics, we split the into phylogroups compared composition across nutritional strategies. Subsequently, used Raman spectroscopy to...
Filamentous fungi play a key role in the terrestrial carbon cycle as they are primary decomposers of lignocellulose soil organic matter (SOM). Fungi secrete wide range oxidative and hydrolytic enzymes, generate radicals through extracellular secondary metabolites to decompose SOM. To study fungal decomposition SOM, activities isolated enzymes typically studied proxies for activity fungi. However, involved often bound polymeric substance (EPS) matrices. This association between EPS matrices...
Regular octahedral coordination has been reported for some copper(II) complexes in the solid state on basis of crystallographic studies, e.g. hexaaquacopper(II) bromate, [Cu(OH2)6](BrO3)2, hexafluorosilicate, [Cu(OH2)6]SiF6, and hexakis(pyridine-1-oxide)copper(II) perchlorate, [Cu(ONC5H5)6](ClO4)2. These results are not consistent with elongated configuration expected from Jahn–Teller theorem d9 ion nor, cases, electron spin resonance studies. The present lattice-independent EXAFS study...