@phdthesis{Steeples2016,
  author    = {Steeples, Elliot},
  title     = {Amino acid-derived imidazolium salts: platform molecules for N-Heterocyclic carbene metal complexes and organosilica materials},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-101861},
  school      = {Universit{\"a}t Potsdam},
  pages     = {139},
  year      = {2016},
  abstract  = {In the interest of producing functional catalysts from sustainable building-blocks, 1, 3-dicarboxylate imidazolium salts derived from amino acids were successfully modified to be suitable as N-Heterocyclic carbene (NHC) ligands within metal complexes. Complexes of Ag(I), Pd(II), and Ir(I) were successfully produced using known procedures using ligands derived from glycine, alanine, β-alanine and phenylalanine. The complexes were characterized in solid state using X-Ray crystallography, which allowed for the steric and electronic comparison of these ligands to well-known NHC ligands within analogous metal complexes. The palladium complexes were tested as catalysts for aqueous-phase Suzuki-Miyaura cross-coupling. Water-solubility could be induced via ester hydrolysis of the N-bound groups in the presence of base. The mono-NHC-Pd complexes were seen to be highly active in the coupling of aryl bromides with phenylboronic acid; the active catalyst of which was determined to be mostly Pd(0) nanoparticles. Kinetic studies determined that reaction proceeds quickly in the coupling of bromoacetophenone, for both pre-hydrolyzed and in-situ hydrolysis catalyst dissolution. The catalyst could also be recycled for an extra run by simply re-using the aqueous layer. The imidazolium salts were also used to produce organosilica hybrid materials. This was attempted via two methods: by post-grafting onto a commercial organosilica, and co-condensation of the corresponding organosilane. The co-condensation technique harbours potential for the production of solid-support catalysts.},
  language  = {en}
}
@misc{SteeplesKellingSchildeetal.2016,
  author    = {Steeples, Elliot and Kelling, Alexandra and Schilde, Uwe and Esposito, Davide},
  title     = {Amino acid-derived N-heterocyclic carbene palladium complexes for aqueous phase Suzuki-Miyaura couplings},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-394488},
  pages     = {4922 -- 4930},
  year      = {2016},
  abstract  = {In this work, three ligands produced from amino acids were synthesized and used to produce five bis- and PEPPSI-type palladium-NHC complexes using a novel synthesis route from sustainable starting materials. Three of these complexes were used as precatalysts in the aqueous-phase Suzuki-Miyaura coupling of various substrates displaying high activity. TEM and mercury poisoning experiments provide evidence for Pd-nanoparticle formation stabilized in water.},
  language  = {en}
}
@misc{BlockGuenterRodriguesetal.2021,
  author    = {Block, Inga and G{\"u}nter, Christina and Rodrigues, Alysson Duarte and Paasch, Silvia and Hesemann, Peter and Taubert, Andreas},
  title     = {Carbon Adsorbents from Spent Coffee for Removal of Methylene Blue and Methyl Orange from Water},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {14},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-52165},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-521653},
  pages     = {20},
  year      = {2021},
  abstract  = {Activated carbons (ACs) were prepared from dried spent coffee (SCD), a biological waste product, to produce adsorbents for methylene blue (MB) and methyl orange (MO) from aqueous solution. Pre-pyrolysis activation of SCD was achieved via treatment of the SCD with aqueous sodium hydroxide solutions at 90 °C. Pyrolysis of the pretreated SCD at 500 °C for 1 h produced powders with typical characteristics of AC suitable and effective for dye adsorption. As an alternative to the rather harsh base treatment, calcium carbonate powder, a very common and abundant resource, was also studied as an activator. Mixtures of SCD and CaCO3 (1:1 w/w) yielded effective ACs for MO and MB removal upon pyrolysis needing only small amounts of AC to clear the solutions. A selectivity of the adsorption process toward anionic (MO) or cationic (MB) dyes was not observed.},
  language  = {en}
}
@article{BlockGuenterRodriguesetal.2021,
  author    = {Block, Inga and G{\"u}nter, Christina and Rodrigues, Alysson Duarte and Paasch, Silvia and Hesemann, Peter and Taubert, Andreas},
  title     = {Carbon Adsorbents from Spent Coffee for Removal of Methylene Blue and Methyl Orange from Water},
  series = {Materials},
  volume    = {14},
  journal   = {Materials},
  number    = {14},
  publisher = {MDPI},
  address   = {Basel},
  issn      = {1996-1944},
  doi       = {10.3390/ma14143996},
  pages     = {18},
  year      = {2021},
  abstract  = {Activated carbons (ACs) were prepared from dried spent coffee (SCD), a biological waste product, to produce adsorbents for methylene blue (MB) and methyl orange (MO) from aqueous solution. Pre-pyrolysis activation of SCD was achieved via treatment of the SCD with aqueous sodium hydroxide solutions at 90 °C. Pyrolysis of the pretreated SCD at 500 °C for 1 h produced powders with typical characteristics of AC suitable and effective for dye adsorption. As an alternative to the rather harsh base treatment, calcium carbonate powder, a very common and abundant resource, was also studied as an activator. Mixtures of SCD and CaCO3 (1:1 w/w) yielded effective ACs for MO and MB removal upon pyrolysis needing only small amounts of AC to clear the solutions. A selectivity of the adsorption process toward anionic (MO) or cationic (MB) dyes was not observed.},
  language  = {en}
}
@article{PietzschNiskanenVazdaCruzetal.2022,
  author    = {Pietzsch, Annette and Niskanen, Johannes and Vaz da Cruz, Vinicius and B{\"u}chner, Robby and Eckert, Sebastian and Fondell, Mattis and Jay, Raphael Martin and Lu, Xingye and McNally, Daniel and Schmitt, Thorsten and F{\"o}hlisch, Alexander},
  title     = {Cuts through the manifold of molecular H2O potential energy surfaces in liquid water at ambient conditions},
  series = {Proceedings of the National Academy of Sciences of the United States of America},
  volume    = {119},
  journal   = {Proceedings of the National Academy of Sciences of the United States of America},
  number    = {28},
  publisher = {National Acad. of Sciences},
  address   = {Washington, DC},
  issn      = {1091-6490},
  doi       = {10.1073/pnas.2118101119},
  pages     = {6},
  year      = {2022},
  abstract  = {The fluctuating hydrogen bridge bonded network of liquid water at ambient conditions entails a varied ensemble of the underlying constituting H2O molecular moieties. This is mirrored in a manifold of the H2O molecular potentials. Subnatural line width resonant inelastic X-ray scattering allowed us to quantify the manifold of molecular potential energy surfaces along the H2O symmetric normal mode and the local asymmetric O-H bond coordinate up to 1 and 1.5 angstrom, respectively. The comparison of the single H2O molecular potentials and spectroscopic signatures with the ambient conditions liquid phase H2O molecular potentials is done on various levels. In the gas phase, first principles, Morse potentials, and stepwise harmonic potential reconstruction have been employed and benchmarked. In the liquid phase the determination of the potential energy manifold along the local asymmetric O-H bond coordinate from resonant inelastic X-ray scattering via the bound state oxygen ls to 4a(1) resonance is treated within these frameworks. The potential energy surface manifold along the symmetric stretch from resonant inelastic X-ray scattering via the oxygen 1 s to 2b(2) resonance is based on stepwise harmonic reconstruction. We find in liquid water at ambient conditions H2O molecular potentials ranging from the weak interaction limit to strongly distorted potentials which are put into perspective to established parameters, i.e., intermolecular O-H, H-H, and O-O correlation lengths from neutron scattering.},
  language  = {en}
}
@book{Bahouth2010,
  author    = {Bahouth, Chadi},
  title     = {Der Konflikt um Wasser in Israel und Pal{\"a}stina},
  publisher = {Universit{\"a}tsverlag Potsdam},
  address   = {Potsdam},
  isbn      = {978-3-86956-035-9},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-40747},
  publisher      = {Universit{\"a}t Potsdam},
  pages     = {273},
  year      = {2010},
  abstract  = {Wasser ist rar im Nahen Osten. Die knappe Ressource wird immer h{\"a}ufiger zum Gegenstand politischer Konflikte in der ohnehin instabilen Region. Der Konflikt zwischen Israel und Pal{\"a}stina gilt als eines der gravierendsten Beispiele f{\"u}r diese Entwicklung: Wasser als umk{\"a}mpftes Menschenrecht, Wasser als strategisches Mittel der Besetzungspolitik und Wasser als Gegenstand langwieriger Verhandlungen. Der Wasserkonflikt ist so alt wie der Nahostkonflikt selbst. Sogar mit Beginn des Oslo-Prozesses 1993 hat es weder einen grundlegenden Wandel im Wasserkonflikt, noch in der Aussicht auf Ver{\"a}nderung der Wasserknappheit gegeben. Immerhin k{\"o}nnen die Pal{\"a}stinenser in der momentanen Situation ihre eigene Wasserversorgung dort selbst verwalten, wo es ihnen laut der {\"U}bereink{\"u}nfte erlaubt ist. Jedoch ist diese Freiheit eine sehr begrenzte und eine endg{\"u}ltige Kl{\"a}rung dieses Streitpunktes wurde, zusammen mit Jerusalem, den Fl{\"u}chtlingen, den Siedlungen und der Staatsbildung auf die Endstatusverhandlungen verschoben. Chadi Bahouth, Absolvent des Otto-Suhr-Instituts der Freien Universit{\"a}t Berlin, untersucht in seiner Doktorarbeit die Gr{\"u}nde f{\"u}r die ungel{\"o}ste Wasserfrage. Er analysiert die historische und rechtliche Chronologie des Konfliktes, bietet L{\"o}sungsvorschl{\"a}ge f{\"u}r die Wasserkrise an und erkl{\"a}rt, warum die Region dennoch f{\"u}r Generationen nicht zur Ruhe kommen wird.},
  language  = {de}
}
@article{LehrLischeid2020,
  author    = {Lehr, Christian and Lischeid, Gunnar},
  title     = {Efficient screening of groundwater head monitoring data for anthropogenic effects and measurement errors},
  series = {Hydrology and Earth System Sciences},
  volume    = {24},
  journal   = {Hydrology and Earth System Sciences},
  number    = {2},
  publisher = {Copernicus},
  address   = {G{\"o}ttingen},
  issn      = {1027-5606},
  doi       = {10.5194/hess-24-501-2020},
  pages     = {501 -- 513},
  year      = {2020},
  abstract  = {Groundwater levels are monitored by environmental agencies to support the sustainable use of groundwater resources. For this purpose continuous and spatially comprehensive monitoring in high spatial and temporal resolution is desired. This leads to large datasets that have to be checked for quality and analysed to distinguish local anthropogenic influences from natural variability of the groundwater level dynamics at each well. Both technical problems with the measurements as well as local anthropogenic influences can lead to local anomalies in the hydrographs. We suggest a fast and efficient screening method for the identification of well-specific peculiarities in hydrographs of groundwater head monitoring networks. The only information required is a set of time series of groundwater heads all measured at the same instants of time. For each well of the monitoring network a reference hydrograph is calculated, describing expected "normal" behaviour at the respective well as is typical for the monitored region. The reference hydrograph is calculated by multiple linear regression of the observed hydrograph with the "stable" principal components (PCs) of a principal component analysis of all groundwater head series of the network as predictor variables. The stable PCs are those PCs which were found in a random subsampling procedure to be rather insensitive to the specific selection of the analysed observation wells, i.e. complete series, and to the specific selection of measurement dates. Hence they can be considered to be representative for the monitored region in the respective period. The residuals of the reference hydrograph describe local deviations from the normal behaviour. Peculiarities in the residuals allow the data to be checked for measurement errors and the wells with a possible anthropogenic influence to be identified. The approach was tested with 141 groundwater head time series from the state authority groundwater monitoring network in northeastern Germany covering the period from 1993 to 2013 at an approximately weekly frequency of measurement.},
  language  = {en}
}
@misc{LehrLischeid2020,
  author    = {Lehr, Christian and Lischeid, Gunnar},
  title     = {Efficient screening of groundwater head monitoring data for anthropogenic effects and measurement errors},
  series = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {2},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-51199},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-511992},
  pages     = {15},
  year      = {2020},
  abstract  = {Groundwater levels are monitored by environmental agencies to support the sustainable use of groundwater resources. For this purpose continuous and spatially comprehensive monitoring in high spatial and temporal resolution is desired. This leads to large datasets that have to be checked for quality and analysed to distinguish local anthropogenic influences from natural variability of the groundwater level dynamics at each well. Both technical problems with the measurements as well as local anthropogenic influences can lead to local anomalies in the hydrographs. We suggest a fast and efficient screening method for the identification of well-specific peculiarities in hydrographs of groundwater head monitoring networks. The only information required is a set of time series of groundwater heads all measured at the same instants of time. For each well of the monitoring network a reference hydrograph is calculated, describing expected "normal" behaviour at the respective well as is typical for the monitored region. The reference hydrograph is calculated by multiple linear regression of the observed hydrograph with the "stable" principal components (PCs) of a principal component analysis of all groundwater head series of the network as predictor variables. The stable PCs are those PCs which were found in a random subsampling procedure to be rather insensitive to the specific selection of the analysed observation wells, i.e. complete series, and to the specific selection of measurement dates. Hence they can be considered to be representative for the monitored region in the respective period. The residuals of the reference hydrograph describe local deviations from the normal behaviour. Peculiarities in the residuals allow the data to be checked for measurement errors and the wells with a possible anthropogenic influence to be identified. The approach was tested with 141 groundwater head time series from the state authority groundwater monitoring network in northeastern Germany covering the period from 1993 to 2013 at an approximately weekly frequency of measurement.},
  language  = {en}
}
@phdthesis{Sinn2004,
  author    = {Sinn, Cornelia G.},
  title     = {Ion binding to polymers and lipid membranes in aqueous solutions : Ionenbindung an Polymeren und Lipidmembranen in w{\"a}ssrigen L{\"o}sungen},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-0001778},
  school      = {Universit{\"a}t Potsdam},
  year      = {2004},
  abstract  = {Ziel dieser Arbeit ist die Untersuchung der Ionenbindung an Polymeren und Lipidmembranen in w{\"a}ssrigen L{\"o}sungen. Im ersten Teil dieser Arbeit wurde der Einfluss verschiedener anorganischer Salze und Polyelektrolyte auf die Struktur des Wassers mit Hilfe Isothermer Mikrotitrationskalorimetrie (ITC) erforscht. Die Verd{\"u}nnungsw{\"a}rme der Salze wurde als Maß f{\"u}r die F{\"a}higkeit der Ionen, die geordnete Struktur des Wassers zu stabilisieren oder zu zerst{\"o}ren, verwendet. Die Verd{\"u}nnungsw{\"a}rmen konnten auf Hofmeister Effekte zur{\"u}ckgef{\"u}hrt werden. Im Anschluss daran wurde die Bindung von Ca2+ an Natrium- Poly(acryls{\"a}ure) (NaPAA) untersucht. Mit Hilfe von ITC und einer Ca2+- selektiven Elektrode wurde die Reaktionsenthalpie und Bindungsisotherme gemessen. Es wurde gezeigt, dass die Binding von Ca2+ - Ionen an NaPAA stark endotherm und daher entropiegetrieben ist. Anschließend wurde die Bindung von Ca2+ an die eindimensionale Polymerkette mit der an ein Lipidvesikel mit denselben funktioniellen Gruppen verglichen. Es wurde beobachtet, dass die Ionenbindung \–wie auch im Fall des Polymers- endotherm ist. Ein Vergleich der Ca2+- Bindung an die Lipidmembran mit der an das Polymer konnte zeigen, dass das Ion schw{\"a}cher an die Membran bindet. Im Zusammenhang mit diesen Experimenten wurde auch beobachtet, dass Ca2+ nicht nur an geladene, sondern auch an zwitterionische Lipidvesikel bindet. Schließlich wurde die Wechselwirkung zweier Salze, KCl and NaCl, mit einem neutralen Polymergel, PNIPAAM, und dem geladenen Polymer PAA untersucht. Mit Hilfe von Kalorimetrie und einer kaliumselektiven Elektrode wurde beobachtet, dass die Ionen mit beiden Polymeren wechselwirken, unabh{\"a}ngig davon, ob diese Ladungen tragen, oder nicht.},
  language  = {en}
}
@article{GuzmanSamprognaMohorMendiondo2020,
  author    = {Guzman, Diego A. and Samprogna Mohor, Guilherme and Mendiondo, Eduardo Mario},
  title     = {Multi-year index-based insurance for adapting Water Utility Companies to hydrological drought},
  series = {Water},
  volume    = {12},
  journal   = {Water},
  number    = {11},
  publisher = {MDPI},
  address   = {Basel},
  issn      = {2073-4441},
  doi       = {10.3390/w12112954},
  pages     = {22},
  year      = {2020},
  abstract  = {The sustainability of water utility companies is threatened by non-stationary drivers, such as climate and anthropogenic changes. To cope with potential economic losses, instruments such as insurance are useful for planning scenarios and mitigating impacts, but data limitations and risk uncertainties affect premium estimation and, consequently, business sustainability. This research estimated the possible economic impacts of business interruption to the Sao Paulo Water Utility Company derived from hydrological drought and how this could be mitigated with an insurance scheme. Multi-year insurance (MYI) was proposed through a set of "change" drivers: the climate driver, through forcing the water evaluation and planning system (WEAP) hydrological tool; the anthropogenic driver, through water demand projections; and the economic driver, associated with recent water price policies adopted by the utility company during water scarcity periods. In our study case, the evaluated indices showed that MYI contracts that cover only longer droughts, regardless of the magnitude, offer better financial performance than contracts that cover all events (in terms of drought duration). Moreover, through MYI contracts, we demonstrate solvency for the insurance fund in the long term and an annual average actuarially fair premium close to the total expected revenue reduction.},
  language  = {en}
}