Filtyp
Accurate and reliable estimation of actual evapotranspiration (AET) is essential for various hydrological studies, including drought prediction, water resource management, and the analysis of atmospheric–terrestrial carbon exchanges. Gridded AET products offer potential for application in ungauged areas, but their uncertainties may be significant, making it difficult to identify the best products
9:00 Välkomna! 9:10-9:50 SweNanoSafe : Kartläggning av hinder och åtgärder för säker hantering av nanomaterial 9:50-10:30 Niklas Jungerth, Swedish Standards Institute, projektledare för Nanoteknik SIS/TK 516: Standarder för nanomaterial 10:30-11.30 Fika och posterutställning 11.30-12.30 Otmar Schmid, head of the Pulmonary Aerosol Delivery Group, Helmholtz Zentrum in Munic: Nanomaterial dosimetry i
https://www.pi.lu.se/sites/pi.lu.se/files/schema_nanosafetydag.docx - 2026-07-17
We present an evaluation of a nested high-resolution Goddard Earth Observing System (GEOS)-Chem chemistry transport model simulation of tropospheric chemistry over tropical South America. The model has been constrained with two isoprene emission inventories: (1) the canopy-scale Model of Emissions of Gases and Aerosols from Nature (MEGAN) and (2) a leaf-scale algorithm coupled to the Lund-Potsdam-
AimTo reconstruct spatial and temporal patterns of European fire activity during the Holocene and to explore their potential drivers, by relating biomass burning to simulated biotic and abiotic parameters. LocationEurope. MethodsHolocene fire activity was investigated based on 156 sedimentary charcoal records from lakes and peat bogs across Europe. Charcoal data covering the last 9000 years were s
Resolving the spatial and temporal dynamics of gross primary productivity (GPP) of terrestrial ecosystems across different scales remains a challenge. Remote sensing is regarded as the solution to upscale point observations conducted at the ecosystem level, using the eddy covariance (EC) technique, to the landscape and global levels. In addition to traditional vegetation indices, the photochemical
Nitrogen (N) cycle dynamics and N deposition play an important role in determining the terrestrial biosphere's carbon (C) balance. We assess global and biome-specific N deposition effects on C sequestration rates with the dynamic global vegetation model LPJ-GUESS. Modeled CN interactions are evaluated by comparing predictions of the C and CN version of the model with direct observations of C fluxe
Although much attention in recent years has been devoted to methane (CH4) emissions from northern wetlands, measurement based data sets providing full annual budgets are still limited in number. This study was designed to help fill the gap of year-round measurements of CH4 emissions from subarctic mires. We report continuous eddy correlation CH4 flux measurements made during 2006 and 2007 over the
The Fine Resolution Explorer for Salinity, Carbon and Hydrology (FRESCH) is presented. The science case and the mission objectives are discussed before presenting the mission concept. FRESCH is an L-band antenna array operated in beamforming mode providing data at a spatial resolution of 10-15 km to study the biogeochemical and physical phenomena taking place at the interfaces of ocean, land and i
High-Arctic environments are facing an elevated pace of warming and increasing human activities, making them more susceptible to the introduction and spread of alien species. We investigated the role of human disturbance in facilitating the spread of a native plant (Papaver dahlianum) in a high-Arctic natural environment close to Isfjord Radio station and along adjacent hiking trails at Kapp Linné
Land use/vegetation cover change, reflecting a range of human land use practices, is the most prevalent and immediate influence on alterations in soil quality. The physical structure of soil is crucial for safeguarding soil carbon (C) and nitrogen (N), as it modulates the physical protection mechanisms and the distribution of these elements within the soil. Nevertheless, the impact of soil physica
Properties of varved sediments from Lake Logurinn in eastern Iceland and their link to climate and glacial processes of Eyjabakkajokull, an outlet glacier of the Vatnajokull icecap, were examined. A varve chronology, which covers the period AD 1262-2005, was constructed from visual observations, high-resolution images, X-ray density and geochemical properties determined from X-radiography and X-ra
Övervägande del av förundersökningar av brott mot barn läggs ner. När förövaren dessutom är en närstående eller förälder försvåras utredningen avsevärt då det sällan finns vittnen och barnet kanske inte inser att de blivit utsatta för ett brott. Dessa ärenden utreds ibland inte heller av socialnämnden trots att mängden orosanmälan ökar. Barnet har ett speciellt behov av skydd och samhället har ettMost investigations of crimes against children are terminated before being brought to court. The investigations become significantly more complicated when the perpetrator happens to be a family member or parent. Some of the difficulties occur because the child may not realize that they have been victimized and there are rarely witnesses to the acts. Children have a special need for protection and
En fungerande kapitalmarknad är en förutsättning för ett växande näringsliv. För att upprätthålla en fungerande kapitalmarknad med jämlika spelregler för alla aktörer finns marknadsmissbruksreglerna. Ett särskilt marknadsmissbruk som anses hota kapitalmarknadens funktionalitet är insiderhandel. Under 2000-talet har det skett en snabb teknisk utveckling vilket medfört betydande förändringar av den A properly functioning capital market is a necessary condition for a growing economy. In order to maintain a functioning capital market there are regulations against market abuse. A special kind of market abuse that is considered to threat the functionality of the capital market is insider trading. Due to the rapid technical development during the 21st century there has been major changes in the f
Spruce bark beetle outbreaks are common in Norway spruce forests following windstorm damage, due to ample availability of brood material. The realization of an outbreak depends on factors regulating the Ips typographus population dynamics, such as weather conditions and salvage cutting. In this study, we take an ecosystem modelling approach to analyse the influence of multiple environmental factor
In this paper, a novel method for analysing a bird’s song is presented. The song of male great reed warblers is used for developing and testing the methods. A robust method for detecting syllables is proposed and a classification of those syllables as compared to reference syllables is done. The extraction of classification features are based on the use of singular vectors in different time-freque
4-Substituted bicyclo[2.2.2]octane-2,6-diones have been synthesized and tested as substrates in the enantioselective reduction with baker's yeast to give the corresponding hydroxy ketones. It was found that the derivative bearing a TIPSO group at the 4-position was not reduced at all while that with a TBDMSO group gave 87% yield and 46% ee. Other 4-oxy functionalized derivatives were reduced with
Background Lifecycles of electronics are decreasing, whereas companies with long life product such as the automotive and defence industry is increasing electrification in their products. Consequently, the mismatch in lifecycles between the electronics industry and Original Equipment Manufacturers (OEMs), with long life products, requires a solid obsolescence management process, to mitigate and res
Pupils have gotten school meals in Sweden since the late 1800´s. The school meal has of course changed over the years. In the beginning the pupils only got porridge and milk. Since then they serve both meat-, fish- and chicken dishes. In recent years, many schools around the country are more concerned about the environment and therefore started to serve more plant-based diets and less red meat. Re
Accurate, high-resolution global land use and land cover (LULC) mapping is crucial for environmental monitoring, but remains challenging when relying solely on multispectral data. Most existing global LULC mapping studies rely exclusively on multispectral observations, and even those that incorporate synthetic aperture radar (SAR) data often fail to fully exploit the information it provides. SAR p
Global warming may prolong and intensify the thermal growing season of vegetation. It is not yet clear how the Paris Agreement's long-term temperature goals will affect the thermal growing season of vegetation, particularly crops, in China. Based on the Inter-Sectoral Impact Model Intercomparison Project (ISIMIP) datasets and the Global Gridded Crop Model Intercomparison (GGCMI) phase 1 dataset, w
