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Adaptations for nocturnal vision in insect apposition eyes

Popular Abstract in Swedish Hur kan nattaktiva insekter se i mörker med fel sorts ögon? Majoriteten av alla dagaktiva insekter har en sorts facettöga som kallas appositionsöga. Appositionsögon är anpassade till ett liv med god tillgång på ljus ? nattaktiva djur har därför i princip alltid andra sorters ögon (superpositionsögon). Anledningen till att appositionsögon fungerar bäst på dagen är att dDue to our own preference for bright light, we tend to forget that many insects are active in very dim light. The reasons for nocturnal activity are most easily seen in tropical areas of the world, where animals face severe competition for food and nocturnal insects are able to forage in a climate of reduced competition and predation. Generally nocturnal insects possess superposition compound eye

The social and intellectual development of library and information science

The background of the project is partly found in a long tradition within library and information science (LIS) of meta-analyses on the field, partly in a science studies discussion on research fields and their contextual relation to wider academia, fields of professional practices and professionalization processes. The general purpose of the project is to analyze the social and intellectual develo

Phenotypic Specification of Striatal Progenitors; Evidence for both cell-autonomous and environmental control as studied by transplantation into the adult and developing rodent brain

The striatum is the major component of the ventral telencephalon and basal ganglia, involved in the processing of cortical information. The vast majority of the neuronal population in the striatum are striatal projection neurons, with connection to the globus pallidus and substantia nigra. The remaining striatal population consists largely of cholinergic, parvalbumin or somatostatin-containing int

Future Demand and Supply of Food in China - A modeling attempt

This paper focuses on future scenarios of demand and supply of grain in China. Economic development has been growing at a steady pace for decades and there are no signs of a decline in the near future. Projections of population trends show that the population will continue to expand until 2050, when a levelling- off is predicted. The growth of both population and economy drives industrialisation a

FOSS-galaxen. En empirisk undersökning kring fri och öppen programvaraurörelsen

FOSS står för Free Open Source Software. På svenska talar man om fri programvara eller öppen källkod. Rapporten diskuterar denna företeelse samt redovisar en enkätundersökning genomförd bland medlemmar av Svenska Linux-föreningen. Den övergripande ambitionen är att bidra till ett svar på frågan: Varför är FOSS ett sociologiskt intressant och betydelsefullt socialt fenomen?

Large eddy simulation of unsteady combustion

The present study concerns the application of a large eddy simulation (LES) model, capable of dealing with chemical reactions described by multistep reaction mechanisms and thermal radiation. The LES model, based on prefiltering of the balance equations of mass, momentum, and energy contains a variety of submodels far representing the residual stress tensor and flux vectors and the filtered reacti

Fördjupad utvärdering av statsbidraget Skapande skola

Statsbidraget Skapande skola infördes 2008 med syftet att möjliggöra för skolbarn att möta professionella kulturuttryck och engagera sig själva i kulturella aktiviteter. Skapande skola har successivt växt och omfattar idag hela grundskolan, och erbjuder möjligheter till kultur vid många svenska skolor. Den här rapporten redovisar ett fördjupat utvärderingsuppdrag för Myndigheten för kulturanalys,

Logistic Online Online Learning Methods and Their Application to Incremental Dependency Parsing

We investigate a family of update methods for online machine learning algorithms for cost-sensitive multiclass and structured classification problems. The update rules are based on multinomial logistic models. The most interesting question for such an approach is how to integrate the cost function into the learning paradigm. We propose a number of solutions to this problem. To demonstrate the app

Calcium Homeostasis After Thyroid Surgery

Popular Abstract in Swedish Under evolutionens gång har ett komplext system utvecklats för att hålla blodets kalkhalt konstant. Bisköldkörtelhormonet intar här en central roll. Sänkning av blodets kalkhalt ger upphov till ökad bisköldkörtelhormonsekretion. Bisköldkörtelhormonet påverkar njurar och skelett så att mer kalk återförs till blodbanan. Bisköldkörtelhormonet stimulerar också njurarna tillCalcium homeostasis after thyroid surgery was studied during the immediate postoperative period and after one year. One day after hemithyroidectomy ionised calcium decreased whereas basal PTH did not change. EDTA stimulated maximal and total PTH secretion and set-point decreased on postoperative day 1 and normalised on day 7. One year after hemithyroidectomy (n=10) total calcium and 1.25(OH)2D3 de