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The bifunctional dCTP deaminase-dUTPase (DCD-DUT) from Methanocaldococcus jannaschii catalyzes the deamination of the cytosine moiety in dCTP and the hydrolysis of the triphosphate moiety forming dUMP, thereby preventing uracil from being incorporated into DNA. The crystal structure of DCD-DUT has been determined to 1.88-Å resolution and represents the first known structure of an enzyme catalyzing

We have used density functional methods to calculate fully relaxed potential energy curves of the seven lowest electronic states during the binding of O-2 to a realistic model of ferrous deoxyheme. Beyond a Fe-O distance of similar to 2.5 Angstrom, we find a broad crossing region with five electronic states within 15 kJ/mol. The almost parallel surfaces strongly facilitate spin inversion, which is

Charge separation dynamics after the absorption of a photon is a fundamental process relevant both for photosynthetic reaction centers and artificial solar conversion devices. It has been proposed that quantum coherence plays a role in the formation of charge carriers in organic photovoltaics, but experimental proofs have been lacking. Here we report experimental evidence of coherence in the charg

Thermal fluids is a multidisciplinary research area focusing on the behavior, interaction, and transport of heat, energy, and fluids. It encompasses topics like thermodynamics, fluid dynamics, and heat transfer, addressing challenges in energy systems, aerospace, manufacturing, and environmental engineering. Applications include cooling technolo-gies, combustion, renewable energy, and optimizing t

https://www.energy.lth.se/research/thermal-fluids - 2026-07-21

Particles of RuSeMo and RuSnMo have been produced by ball milling; they present catalytic activity towards the oxygen reduction reaction (ORR) in acid media. A Tafel slope close to 120 mV/dec was found for both materials. Their morphology was first characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). SEM and TEM images reveal particles in the sub-micromet

The issue of the short microbiological shelf life of residues from the plant-based beverage industry creates a large food waste problem. Today, the oat beverage residue, in this study referred to as oat okara, is generally converted to energy or used as animal feed. High-pressure pasteurization (200 MPa, 400 MPa, and 600 MPa) was applied to oat okara to investigate the effect on shelf life and mic

Solid Waste Management RECOMMENDATIONS FOR KISUMU, KENYA Mistra Urban Futures Policy Brief 2019:1 Kisumu City generates approximately 400 tonnes of solid waste per day, 20%- 25% of which is collected to the open dump site. Of the total municipal solid waste that is collected, 65% is organic and another 27% is recyclable (County of Kisumu, 2015). The collection and handling of municipal solid waste

https://www.lucsus.lu.se/sites/lucsus.lu.se/files/policy-brief-2019-final-draft_barry_ness.pdf - 2026-07-21

e- e- e- e- hv The incorporation of Bi atoms into III-V semiconductors is of large interest due to the potential formation of topological insulator states (1), band gap tuning (2) and increased spin-orbit coupling (3). Common techniques focus on bulk growth of Bi-III-V compounds imposing a limitation on the available crystal structure. Our approach enables the homogenous incorporation of single Bi

https://www.nano.lu.se/sites/nano.lu.se/files/2021-10/Benter_20210914_NanoLund_poster_SandraBenter_Optimized.pdf - 2026-07-21

Liming is a forest practice used to counteract forest decline induced by soil acidification. It consists of direct Ca and Mg input in forest soil and restores tree mineral nutrition, but also causes drastic changes in nutrient availability in soil. Ectomycorrhizal (ECM) fungi significantly contribute in nutrient uptake by trees, and can recover them through organic acid secretion or through enzyma

The Scania-HBV model has been used for modeling hydropower generation of California, USA. California is a state with considerable meteorological and hydrological diversity, meanwhile with a total capacity of 14116 MW of 386 hydroelectricity generation units with capacity larger than 0.1 MW, California is the USA’s second largest state on hydropower. For such a giant hydropower state, prediction of

Bygg- och fastighetssektorn står för stora utsläpp av växthusgaser från byggnadsmaterial- och energianvändning. Byggbranschen står idag för ca en femtedel av Sveriges totala koldioxidutsläpp. Ett område med stor potential är byggnadsmaterial där IsoTimber är ett av företagen som driver utvecklingen framåt. IsoTimber är en relativt ny aktör inom byggsektorn som tillverkar prefabricerade väggar i trThe construction and real estate sector accounts for a large part of the emission of greenhouse gases from the usage of building material and energy. The construction industry today accounts for about one-fifth of Sweden’s total carbon dioxide emissions. One area with great potential is building materials where IsoTimber is one of the companies that drive the development forward. IsoTimber is a re

In this study, design considerations for ultra low voltage (ULV) standard-cell based memories (SCM) are presented. Trade-offs for area cost, leakage power, access time, and access energy are discussed and realized using different read logic styles, latch architecture designs, and process options. Furthermore, deployment of multiple threshold voltages (Vth) options in a single standard-cell/bitcell

Popular Abstract in Swedish Fjärrvärme är ett centraliserat uppvärmningssystem där varmt vatten distribueras i ett rörnätverk och används främst till byggnadsuppvärmning och för att värma varmvatten. Fjärrvärme finns i alla länder på norra halvklotet men har störst marknadsandel i Norden och Baltikum. I Sverige används fjärrvärme för att värma c:a 60% av all byggnadsyta. Två stora fördelar med fjäRenewable energy sources dominated the world energy supply until the beginning of the 20th century, when fossil energy became the dominant energy source worldwide. Today, fossil fuels contribute to over 80% of world energy supply. But there are two major reasons why fossil energy use has to stop. First, fossil energy is limited and will not last forever. Second, emissions of carbon dioxide change

Lignocellulosic biomass can be utilized to produce ethanol, a promising alternative energy source produced through fermentation of sugars. However, in order to achieve high sugar and ethanol yields, the lignocellulosic material must be pretreated before the enzymatic hydrolysis and fermentation. Dilute acid pretreatment, using SO2, is one of the most promising methods of pretreatment for softwood

ETHANOL FUEL PRODUCTION AND USE IN KENYA FOR SUSTAINABLE DEVELOPMENT LUND UNIVERSITY International Masters Programme in Environmental Science ETHANOL FUEL PRODUCTION AND USE IN KENYA FOR SUSTAINABLE DEVELOPMENT A Thesis Submitted in Partial Fulfilment for the Award of a Master of Science Degree in Environmental Science at Lund University, Sweden Author: Supervisor: Leah Wanambwa Barry Ness LUMES L

https://www.lumes.lu.se/sites/lumes.lu.se/files/leah_wanambwa.pdf - 2026-07-21