Energy efficient process ventilation in paint shops in the car industry : Experiences and an evaluation of a full scale implementation at Saab Automobile in Sweden.

Support processes in industrial energy systems, such as heating, ventilation and cooling systems, are important processes in industrial premises as they are related to energy cost, product quality as well as the indoor environment. In the vehicle production process the paint shop is the most energy intensive part, and about 75% of the energy is used in the ovens and spray booths. The spray booth line, which includes paint application and the oven, uses large quantities of air in order to keep the air quality in an optimal range to achieve the desired paint quality. The approach used in paint shops has up to now been to keep as much of steady state conditions as possible to avoid paint defects due to disturbances in the balance. This means that these high air flows are used also at low and non production hours. There is thus a large potential to increase energy efficiency by controlling the air flow and heating without losing the critical balances. This paper will present an initial post-implementation evaluation of the energy efficiency potential and experiences after running this type of system. CFD has been used to investigate the control strategy.Deltagit i ett Vinnova projekt: Energieffektivt måleri</p

Earnings and work loss from 5 years before to 5 years after bariatric surgery: A cohort study.

BackgroundThe personal economic impact of bariatric surgery is not well-described.ObjectivesTo examine earnings and work loss from 5 years before to 5 years after bariatric surgery compared with the general population.SettingNationwide matched cohort study in the Swedish health care system.MethodsPatients undergoing primary bariatric surgery (n = 15,828) and an equal number of comparators from the Swedish general population were identified and matched on age, sex, place of residence, and educational level. Annual taxable earnings (primary outcome) and annual work loss (secondary outcome combining months with sick leave and disability pension) were retrieved from Statistics Sweden. Participants were included in the analysis until the year of study end, emigration or death.ResultsFrom 5 years before to 5 years after bariatric surgery, earnings increased for patients overall and in subgroups defined by education level and sex, while work loss remained relatively constant. Bariatric patients and matched comparators from the general population increased their earnings in a near parallel fashion, from 5 years before (mean difference -$3,489 [95$4,164 [-4,709 to -3,619]). Work loss was relatively stable within both groups but with large absolute differences both at 5 years before (1.09 months, [95%CI 1.01 to 1.17]) and 5 years after surgery (1.25 months, [1.11 to 1.40]).ConclusionsFive years after treatment, bariatric surgery had not reduced the gap in earnings and work loss between surgery patients and matched comparators from the general population

Diverse ecological roles within fungal communities in decomposing logs of Picea abies

Fungal communities in Norway spruce (Picea abies) logs in two forests in Sweden were investigated by 454-sequence analyses and by examining the ecological roles of the detected taxa. We also investigated the relationship between fruit bodies and mycelia in wood and whether community assembly was affected by how the dead wood was formed. Fungal communities were highly variable in terms of phylogenetic composition and ecological roles: 1910 fungal operational taxonomic units (OTUs) were detected; 21% were identified to species level. In total, 58% of the OTUs were ascomycetes and 31% basidiomycetes. Of the 231 337 reads, 38% were ascomycetes and 60% basidiomycetes. Ecological roles were assigned to 35% of the OTUs, accounting for 62% of the reads. Wood-decaying fungi were the most common group; however, other saprotrophic, mycorrhizal, lichenized, parasitic and endophytic fungi were also common. Fungal communities in logs formed by stem breakage were different to those in logs originating from butt breakage or uprooting. DNA of specific species was detected in logs many years after the last recorded fungal fruiting. Combining taxonomic identification with knowledge of ecological roles may provide valuable insights into properties of fungal communities; however, precise ecological information about many fungal species is still lacking

Automatic in-line inspection of shape based on photogrammetry

We are describing a fully automatic in-line shape inspection system for controlling the shape of moving objects on a conveyor belt. The shapes of the objects are measured using a full-field optical shape measurement method based on photogrammetry. The photogrammetry system consists of four cameras, a flash, and a triggering device. When an object to be measured arrives at a given position relative to the system, the flash and cameras are synchronously triggered to capture images of the moving object. From the captured images a point-cloud representing the measured shape is created. The point-cloud is then aligned to a CAD-model, which defines the nominal shape of the measured object, using a best-fit method and a feature-based alignment method. Deviations between the point-cloud and the CAD-model are computed giving the output of the inspection process. The computational time to create a point-cloud from the captured images is about 30 seconds and the computational time for the comparison with the CAD-model is about ten milliseconds. We report on recent progress with the shape inspection system.SIVPR

A study on the development of a web application - Presentshoppen

This report studies the development of a usable web application for gifts with an engaging buying process, where the customer is given suggestions on gifts based on his preferences. The demand was examined and confirmed by studies which formed the basis for the development of the application. The work was done with the project methodology Scrum, which is presented and evaluated. The report presents and discusses the technical solutions chosen for the implementation of the web application.Design choices have been made and are discussed, with the main objective to create ausable web application with an engaging buying process. Usability and commitment hasbeen created through a buying process in which the products are presented one at a time. Finally, the report argues that Presentshoppen is to some extent usable and with an engaging buying process, but it is difficult to prove this before any launch.Denna rapport studerar utvecklandet av en användbar e-butik för presenter med enengagerande köpprocess, där kunden ges förslag på presenter efter dennes preferenser. Behovet av en sådan e-butik kartlades och bekräftades genom studier, vilket låg till grund för utvecklandet av applikationen. Arbetet har genomförts med projektmetodiken Scrum som presenteras och utvärderas. Rapporten presenterar och diskuterar valda tekniska lösningar för implementationen av webbapplikationen. Designmässiga val och avvägningar har genomförts och diskuteras, där huvudsyftet varit att skapa en användbar e-butik med en engagerande köpprocess. Användbarhet och engagemang har huvudsakligen skapats genom en köpprocess där produkter presenteras en i taget. Slutligen argumenterar rapporten för att Presentshoppen till viss del är användbar och engagerande men att svårigheter finns att visa detta innan eventuell lansering