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Kan abborren stoppa den invasiva smörbultens framfart i Östersjön? Ett av de största hoten mot ett ekosystem är en invasion av nya arter, då de påverkar biodiversiteten, den redan etablerade dynamiken mellan arter och skapar högre konkurrens om föda och habitat. Östersjön är en unik miljö med hög variation av både temperatur och salthalt, vilket kan göra det svårt för arter att etablera sig vilkDuring the last decades the spread of the invasive species round goby, Neogobius melanostomus, has largely increased in the Baltic Sea affecting the ecosystem, biodiversity and species interactions. Round goby originates from the Caspian Sea and has most likely been introduced multiplied times via ships ballast water to different areas of the Baltic Sea. The establishment has had both negative and

För att undersöka mycket snabba förlopp, likt elektroners rörelser kring atomkärnan, krävs ljuspulser som endast är några hundra attosekunder långa. En attosekund ($10^{-18}$ s) är en miljarddels miljarddels sekund, och förhåller sig således ungefär till en sekund som en sekund förhåller sig till två gånger universums ålder. Attosekundspulser, det vill säga ljuspulser kortare än en femtosekund ($The first aim of this project is to make high-order harmonic (HHG) setups more compact and user-friendly, by including a micro-channel plate (MCP). Simulations of the transmission properties of an MCP has been performed. These simulations displayed introduced structure in the far field, but a very well behaved beam in the near field. Further, the wavefront of the zeroth order diffraction spot of M

This study saw the development of an experimental setup capable of generating and measuring optical-field-induced currents in a variety of nanodevices fabricated specifically for this project. Each device design features two metallic contacts, closely separated by about 5 micrometers, deposited onto a semiconductor or insulator substrate. The region between these two contacts is a junction, being Laser Activated Electronics Transistors are often considered the most revolutionary electrical devices of this century, attributed as the building block of all modern technology. It is these tiny devices that control the flow of electrons in all your electronics. In your computer alone, there are hundreds of millions of these transistors, all working together in a complex circuit. Previously, impr

The high sex ratio at birth and its gradual increase are one of the most significant demographic changes in China in the past 30 years. The sex ratio at birth first increased until 1994 and then stayed fluctuating before it decreased from 2000 on. Regarding the issue of whether or not China's current family planning policy affects and to what extent it affects the sex ratio at birth, starts wi

Historiskt sett har människor byggt sina hus med de material som den omgivande naturen gav. Både vass och lera är två sådana material som förekommer naturligt. Det som bl.a. skiljer dessa material åt är de processer som krävs för att de ska kunna användas som taktäckningsmaterial. Vassen skördas och torkas medan leran bearbetas och bränns för att slutligen bli en användbar produkt. I tidigare svenHistorically, people built their houses with the materials that the surrounding nature gave. Reeds and clay are two such materials occurring naturally. A difference between these materials is the processes required for them to be used as roofing material. Reed is harvested and then dried while the clay is processed and fired to finally become the useful product. In earlier Swedish history roofs we

New products on the market are likely to be simulated in a computer sometime during the development process. The environment for which the physical model of the product is developed may not always be the optimal for control simulations of the model. To be able to export models from one environment to another a common model definition must be defined. The Functional Mock-up Interface, FMI, provides

In this project, we are studying the material flow and the information flow of sample materials and the appurtenant report of deviation for the purpose to be able to suggest better solutions. The sample material, which is to be analysed, is to be continuously taken from the production flow. The purpose is to navigate the process by the results found by the analysis. Because of this, it's very

Hematopoietic stem cells (HSC) are multipotent and possess self-renewal capacity. Thus, they can sustain a life-long hematopoiesis and are also capable of restoring the hematopoietic system when transplanted to a patient. In allogeneic hematopoietic stem cell transplantation (HSCT), a potent graft-versus-leukemia (GvL) effect must be balanced against the concomitant risk of severe immunological re

There is a great demand for improved technologies with regard to rapid processing of nano- and microparticles. The handling of viruses in addition to microbial and mammalian cells requires the availability of appropriate adsorbents. Recent developments in macroporous gels produced at subzero temperatures (known as cryogels) have demonstrated an efficiency for processing cell and virus suspensions,

Background: Swirl sign has previously been described in epidural hematomas as areas of low attenuation, radiolucency or irregular density. The aims of this study were to describe swirl sign in ICH, study its prevalence, study the reliability of the subjective evaluation on computed tomography (CT), and to explore its prognostic value. Methods: CTs of 203 patients with ICH were retrospectively eval

This paper illustrates some biochemical and pharmacological properties of two natural marine products such as trabectedin (ET-743, Yondelis) and aplidine. Trabectedin has shown clinical antitumor activity in refractory soft tissue sarcoma and ovarian cancer. The lack of cross resistance of trabectedin with other chemotherapeutic drugs is presumably related to its peculiar mode of action, that seem

More and more people will experience thermal stress in the future as the global temperature is increasing at an alarming rate and the risk for extreme weather events is growing. The increased exposure to extreme weather events poses a challenge for societies around the world. This literature review investigates the feasibility of making advanced human thermal models in connection with meteorologic

Background: The Swedish Program for health surveillance of preschool children includes screening of language and communication abilities. One important language screening is carried out at age 4 years as part of a general screening conducted by health nurses at child health centres. The instruments presently in use for this screening mainly focus on expressive phonology. This may result in both ov

Minimizing insecticide use, preventing vector diseases and facilitating biodiversity assessments are suitable applications of recent advances in photonic insect surveillance and entomological lidar. The tools also comprise a new window into fundamental aspect of the fascinating life and ecology of insects and their predators in situ. At the same time, it is evident that lidars are subject to finit

Introduction The potential impact of socio-economic condition on virological suppression during antiretroviral treatment (ART) in sub-Saharan Africa is largely unknown. In this case-control study, we compared socio-economic factors among Ethiopian ART recipients with lack of virological suppression to those with undetectable viral load (VL). Methods Cases (VL>1000 copies/ml) and controls (VL<150 c

Given shortcomings in basic data collection and insufficient resources in preparing official statistics African growth data are unlikely to be very reliable. Estimates of an annual growth rate of 3 per cent may be consistent with a reality between 0 and 6 per cent growth. Although data from international databases are widely used in an expanding literature on African growth there has been no resea

The next generation of conventional submarines will be submerged for several weeks, creating a need for regenerative air purification methods and new air monitoring instruments. Submarine air is a complex mixture of compounds, where the most obvious contaminant is metabolically produced carbon dioxide. Normal eight-hour occupational exposure limits are not applicable on a submarine, instead specia

Background: Kidney transplantation is considered a superior treatment for end-stage renal disease compared with dialysis although little is known about the wider effects, especially on labor market outcomes. The objective is to estimate the treatment effect of kidney transplantation compared with dialysis on labor market outcomes, controlling for the nonrandom selection into treatment. Methods: Th

In this paper we study the Lilang Super Group in the Spiti area, Indian Himalaya to understand environmental changes in the aftermath of the end-Permian mass extinction. We focus on the Mikin and Kaga Formations, which span the Induan to Ladinian stages of the Lower and Middle Triassic. These strata formed on the southern mid-palaeolatitude margin of East Gondwana and are interpreted as condensed,