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Bacteriophage M13 Aggregation on a Microhole Poly(ethylene terephthalate) Substrate Produces an Anionic Current Rectifier : Sensitivity toward Anionic versus Cationic Guests
Bacteriophage material (M13, wild-type) deposited as a film onto a poly(ethylene terephthalate) (PET) substrate (6 μm thick with a 20 μm diameter laser-drilled microhole) has been investigated for ion conductivity and ionic current rectification effects for potential applications in membranes. The M13 aggregate membrane forms under acidic conditions (in aqueous 10 mM acids) and behaves like a micr
Influence of Aromatic Structure on the Thermal Behaviour of Lignin
Lignin, a natural biopolymer and abundant by-product, is a particularly promising feedstock for carbon-based materials and a potentially sustainable alternative to phenolic resins, which are typically derived from crude oil. The source and method used to isolate lignin have a large impact on the thermal properties of the polymer, and can affect resultant materials prepared from lignin. Previous in
Energi, klimat och kultur -en idéanalys av den politiska energi- och klimatdebatten i Sverige
This study aims to examine the energy discourse and how it has changed in the Swedish climate debate through analyzing the closing debates prior the election of the Swedish government from Sveriges Television (SVT). The study also aspires to illuminate how sociocultural ideas of energy, climate and ways of living effects the discourse in the climate debate. The analytical framework is descriptive
Suveräna pengar + Nerväxt = Sant?
A fundamental restructuring of the economic system is a necessary step toward a truly sustainable society. To make this possible, new policy proposals within the economic sector need to be developed and existing ones analysed, with potential for improvement brought up. This thesis investigates how well the proposal of Sovereign Money in Sweden correlates with the aims of degrowth. Using four princ
Influence of levofloxacin and clarithromycin on the structure of DPPC monolayers
Research on lipid/drug interactions at the nanoscale underpins the emergence of synergistic mechanisms for topical drug administration. The structural understanding of bio-mimetic systems employing 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) as a lung surfactant model mixed with antibiotics, as well as their biophysical properties, is of critical importance to modulate the effectiveness of
An introduction to classical molecular dynamics simulation for experimental scattering users
Classical molecular dynamics simulations are a common component of multi-modal analyses of scattering measurements, such as small-angle scattering and diffraction. Users of these experimental techniques often have no formal training in the theory and practice of molecular dynamics simulation, leading to the possibility of these simulations being treated as a `black box' analysis technique. This ar
Mechanically robust cationic cellulose nanofibril 3D scaffolds with tuneable biomimetic porosity for cell culture
3D foam scaffolds were produced in a "bottom-up" approach from lyophilised cationic cellulose nanofibril (CCNF) dispersions and emulsions (CCNF degree of substitution 23.0 ± 0.9%), using a directional freezing/lyophilisation approach, producing internal architectures ranging from aligned smooth walled micro channels, mimicking vascularised tissue, to pumice-like wall textures, reminiscent of poro
Indifferens till differens?
The impact of business sufficiency strategies on consumer practices : The case of bicycle subscription
To stay within planetary boundaries, we need to move into sustainable levels of resource consumption, or sufficiency. Businesses can play a key role in driving sufficiency as they satisfy and also create demand. This article investigates how a bicycle subscription company can promote sufficiency among its users, with a focus on modal shift and product care. It aims to fill the research gap on how
Personlig utveckling i relation till chefen samt mjuka och hårda värden - En kvalitativ studie om medarbetares upplevelser på en privat bank
En kvalitativ studie som består av sex intervjuer med medarbetare från en privat bank. Syftet med studien var att beskriva och analysera hur medarbetare upplever att deras chef påverkar deras personliga utveckling genom mjuka värden, hårda värden och olika sorters ledarskap. Ett snöbollsurval och 30-60 minuter långa intervjuer användes som grund för resultatet. Empirin analyserades sedan utifrån v
Hållbarhetsarbete – hjälpande eller stjälpande?
Uppsatsen kommer fram till att det råder ett statistiskt signifikant samband mellan E-betyget och G-betyget med det marknadsbaserade prestationsmåttet Tobin's Q. Däremot råder inget statistiskt signifikant samband mellan någon ESG-variabel och det redovisningsbaserade prestationsmåttet ROA. Studien indikerar på att det kan vara lönsamt för företag att ägna sig åt miljöarbete utifrån prestation
Styrmixens utformning och användning i grundskolor - En jämförelse mellan hög- och lågpresterande skolor utifrån SALSA-modellen
Rubrik: Styrmixens utformning och användning i grundskolor Datum: 11 januari 2023 Kurs: FEKH69 Examensarbete kandidatnivå i redovisning, 15 hp Författare: David Carlson, Omar Chaaban, Filip Mårtensson Handledare: Johan Dergård Nyckelord: ekonomistyrning, styrmix, grundskolan, styrmedel, Syfte: Uppsatsen syftar till att undersöka styrmixen i grundskolor som presterar bättre, respektive sämre än STitle: The design and use of the management control systems in primary schools Date: 11 january 2023 Course: FEKH69 Bachelor thesis in accounting, 15 credits Authors David Carlson, Omar Chaaban, Filip Mårtensson Advisor: Johan Dergård Keywords: Management control systems, control package, primary school Purpose: The essay aims to examine the management control systems in primary schools that perfo
Pickering emulsions stabilized by naturally derived or biodegradable particles
Emulsions are used widely in formulated consumer products, paints and coatings, foods, and pharmaceutical preparations to name just a few examples. Frequently surfactants are employed as emulsifiers, but the use of particles, including nanoparticles, can offer advantages. Naturally derived, or synthetic, particles that are biodegradable can reduce end-of-life environmental impact, while offering a
An acid-compatible co-polymer for the solubilization of membranes and proteins into lipid bilayer-containing nanoparticles
The fundamental importance of membrane proteins in drug discovery has meant that membrane mimetic systems for studying membrane proteins are of increasing interest. One such system has been the amphipathic, negatively charged poly(styrene-co-maleic acid) (SMA) polymer to form "SMA Lipid Particles" (SMALPs) which have been widely adopted to solubilize membrane proteins directly from the cell membra
Influence of Poly(styrene-co-maleic acid) Copolymer Structure on the Properties and Self-Assembly of SMALP Nanodiscs
Polymer stabilized nanodiscs are self-assembled structures composed of a polymer belt that wraps around a segment of lipid bilayer, and as such are capable of encapsulating membrane proteins directly from the cell membrane. To date, most studies on these nanodiscs have used poly(styrene-co-maleic acid) (SMA) with the term SMA-lipid particles (SMALPs) coined to describe them. In this study, we have
Unravelling cationic cellulose nanofibril hydrogel structure : NMR spectroscopy and small angle neutron scattering analyses
Stiff, elastic, viscous shear thinning aqueous gels are formed upon dispersion of low weight percent concentrations of cationically modified cellulose nanofibrils (CCNF) in water. CCNF hydrogels produced from cellulose modified with glycidyltrimethylammonium chloride, with degree of substitution (DS) in the range 10.6(3)-23.0(9)%, were characterised using NMR spectroscopy, rheology and small angle
Microwave-assisted deep eutectic-solvothermal preparation of iron oxide nanoparticles for photoelectrochemical solar water splitting
Here, we present a new microwave-solvothermal method for the preparation of iron oxide nanostructures using deep eutectic solvents as a more sustainable reaction medium. By varying the synthesis temperature and solvent water fraction, the methodology offers control over iron oxide phase, size, and morphology, using efficient, rapid (10 minute) microwave heating. Synthesis with pure DES gives small
A Tale of Ṭēths, Thētas and Coughing Qôphs : Emphatics and Aspirates in Northwest Semitic, Greek and Egyptian, and the Ugaritic Verbs mẓʾ (“meet”) and mġy (“come”)
The Borrowings Kṣuta-/kṣut- (“Inimical”) and Vidumāla- (“Retrograde”) in Sanskrit Astrological Texts, and the Representation of Semitic ʿayn in Similar Loans
This short article deals with the etymologies of two Perso-Arabic loans that function as technical terms in Tājika (Indian astrology imported from the Perso-Arabic cultural area), both appearing in the works of the 13th century CE astrological author Samarasiṃha. The terms are kṣuta-/kṣut- (“Inimical”) and vidumāla- (“Retrograde”) - the meanings of both have been clear for some time, but the artic