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The free neutral nanoscale NaCl clusters have been produced in a beam and studied with x-ray photoelectron spectroscopy. High resolution spectra simultaneously containing cluster and molecular-monomer, featuring in both the valence and core-level Na 2p and Cl 2p regions, have been obtained. Cluster-level energy shifts of around 3 eV toward lower binding energy for Na 2p and approximate to 1 eV tow
The molecular beam epitaxial growth of PbTe nanowires oil GaAs(111)B substrates is reported. The growth process was based oil the Au-catalyzed vapor-liquid-solid mechanism. These nanowires grow along the [100] axis; they are perpendicular to the substrate, have tapered shapes, and have diameters of about 90 rim at the base and 60 run at the top. High resolution transmission electron microscopy pic
The main topic of this Thesis is the x-ray spectroscopic studies of free nano-clusters with size more than 10^3 atoms. The photoelectron spectroscopy experiments on rare gas and metal clusters were performed at beamline I411 at MAX-lab National Swedish synchrotron radiation facility. Free rare-gas clusters are simplest objects in cluster research. However their electronic structure springs a lot
We recently described a method to compute accurate quantum mechanical free energies [Rod, T. H.; Ryde, U. Phys. Rev. Lett. 2005, 94, `138302]. The method, which we term quantum mechanical thermodynamic cycle perturbation (QTCP), employs a molecular mechanics force field to sample phase space and, subsequently, a thermodynamic cycle to estimate QM/MM free energy changes. Here, we discuss the method
(H2O)(N) clusters generated in a supersonic expansion source with N similar to 1000 were core ionized by synchrotron radiation, giving rise to core-level photoelectron and Auger electron spectra (AES), free from charging effects. The AES is interpreted as being intermediate between the molecular and solid water spectra showing broadened bands as well as a significant shoulder at high kinetic energ
PowerPoint Presentation Understanding Your Foodprint: The Environmental Impacts of What We Eat Photo: Matthieu Paley, National Geographic Kimberly Nicholas Lund University Centre for Sustainability Studies www.kimnicholas.com @KA_Nicholas@KA_Nicholas Photo: Reuters/Paulo Whitaker 12% ice-free land used for crops (size of South America) Ramankutty et al., 2008; Leff et al., 2004 @KA_Nicholas Photo:
https://www.hallbarhet.lu.se/sites/hallbarhet.lu.se/files/kimberly_nicholas_presentation_hallbar_mat_19_maj_2017.pdf - 2026-07-08
In exceptional cases or according to a written agreement, individuals who are neither admitted nor employed may be present at Lund University and participate in its activities, either to the guest directly or to his employer. Content on this page: Guests at the unit Checklist for receiving guests at the unit Guests at the unit Those who are long-term visitors at the University will as a rule be
https://www.hr-webben.lu.se/guests-unit - 2026-07-07
Popular Abstract in Swedish Utveckling av beröringsfri teknik för att styra och kontrollera metallurgiska hög temperatur processer. Befintlig teknik kräver kontakt med mediet av intresse vilket medför att överlevnadstiden för probar och sensorer är kort. I den har avhandlingen beskrivs arbetet med att utveckla och ta i bruk beröringsfri mätteknik för övervakning och kontroll av metallurgiska framsThe steel- and metal industry has an extensive production processing comprising many different process steps of solid, gaseous and liquid nature. Thus it is obvious that a number of different measurement technologies must be used to collect and evaluate key physical parameters which are necessary to control the production processes. In this respect, the software to monitor the processes have, duri
https://www.historiskamuseet.lu.se/english - 2026-07-07
Rose hip fruit, which contains high concentration of carotenoids is commonly used for different food products in Europe and it is considered to have medical properties. In this study, a simple, rapid and efficient HPLC-DAD-APCI+-MS method was developed and applied to identify and quantify the carotenoids in rose hip fruit of four rose species, including both unsaponified and saponified extract. In
Fatty acids, which are essential nutritional components, are also involved in cardiovascular and metabolic diseases. Here we report a human cell surface receptor that we name free fatty acid receptor (FFAR), because it is specifically activated by medium to long-chain free fatty acids. The receptor belongs to the class of seven-transmembrane, G-protein coupled receptors (GPCRs) and also mediates r
The valence states of free neutral potassium clusters produced by a gas aggregation source were probed by synchrotron radiation based photoelectron spectroscopy. The first ionization energy (IE) of the clusters was determined to be 10% larger than the work function of bulk potassium. Using electrostatic concepts and the IE, the mean size of the clusters was estimated to be approximate to 2000 atom
Free nanoscale tin clusters in the average size range of a few tens up to similar to 500 atoms are studied by means of valence and core-level photoelectron spectroscopy. A self-consistent picture arises from comparison of the work functions derived from the 4d core-level spectra, the experimental ionization energies extracted from the 5p valence spectra, and the expectations from the metallic sphe
The composition-dependent change in the work-function (WF) of binary silver-potassium nanoparticles has been studied experimentally by synchrotron-based x-ray photoelectron spectroscopy (PES) and theoretically using a microscopic jellium model of metals. The Ag-K particles with different K fractions were produced by letting a beam of preformed Ag particles pass through a volume with K vapor. The P
Public transportation (PT) is an essential system for cities to achieve sustainability. However, determination of proper locations for PT stations and finding suitable routes are critical decisions. This paper aims to propose a novel method to determine BRT stations and routes in the cities, using Fuzzy Inference System (FIS) and Binary Integer Programming (BIP). In the proposed method, first, a s
Xenon atoms are double-ionized by sequential two-photon absorption by ultrashort extreme ultraviolet free-electron laser pulses with a photon energy of 23.0 and 24.3 eV, produced by the SPring-8 Compact SASE Source test accelerator. The angular distributions of photoelectrons generated by two-photon double ionization are obtained using velocity map imaging. The results are reproduced reasonably we
Narratives in and about organizations: an anthropology, a mode of enquiry and a leadership tool RESEARCH IN SERVICE STUDIES WORKING PAPER NO 16, 2012 HERVÉ CORVELLEC 1 2 Narratives in and about organizations: an anthropology, a mode of enquiry and a leadership tool Hervé Corvellec 3 Introduction The notion of narrative does not only refer to novels, films and other works of fiction. Narrative refe
https://www.ses.lu.se/sites/ses.lu.se/files/wp_16_dec_2012_0.pdf - 2026-07-08
