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99 Uppsatser om Freeze-drying - Sida 4 av 7

Sjukhusmat i Skandinavien

Sjukhusmat är inte bara till för att patienterna ska bli mätta, studier visar också att den har en betydande roll i tillfriskningsprocessen. Det finns flera olika metoder att producera och servera mat på, där samtliga syftar till att ge patienten en så bra service som möjligt. En kvalitativ studie av tre sjukhus i Skandinavien - Danmark, Norge och Sverige utfördes. Efter att ha valt ut ett sjukhus i varje land, utfördes studiebesök med observationer och intervjuer med såväl kockar som ledare för matsektionen. Materialet sammanställdes till kartläggningar av de olika produktions- och serveringsmetoderna och utvärderades med hjälp av SWOT-modellen, det vill säga styrkor, svagheter, möjligheter och hot.

Gruppering av sinkor i stora besättningar

The dry period is usually 6-8 weeks and in this period the basis of the performance in the following lactation is settled. In an average herd about 15% of the cows are dry (Marcussen & Krog Laursen, 2008). In many herd the dry cows are set aside, that means setting aside 15% of your herd, at the time when they are preparing for their next lactation. The recommendation for number of groups differs depending on country traditions or reasons for grouping. If you look at recommendation for feeding, some companies selling feeding equipment advocates one group throughout the dry period, but the number differs from one to three.

Utvärdering av liggbåsinredningar för bättre välfärd och hygien hos mjölkkor

The dry period is usually 6-8 weeks and in this period the basis of the performance in the following lactation is settled. In an average herd about 15% of the cows are dry (Marcussen & Krog Laursen, 2008). In many herd the dry cows are set aside, that means setting aside 15% of your herd, at the time when they are preparing for their next lactation. The recommendation for number of groups differs depending on country traditions or reasons for grouping. If you look at recommendation for feeding, some companies selling feeding equipment advocates one group throughout the dry period, but the number differs from one to three.

Torkning av flis med restvärme : Metoder för att sänka återledningstemperaturen

The purpose of this study has been to evaluate whether a Low temperature bio-mass dryer could be integrated with the local district heating system in Malå. The aim is to increase the thermal efficiency of the cogeneration plant in Malå, by lowering the temperature of the cooling medium. Another benefit that comes from this is improved combustion efficiency at the power plant, since drying the fuel causes an Increase of the heating value.Simulations has been made in Excel, and with use of linear regression, to find out if it is profitable. Data for this purpose has been supplied by the power company Skellefteåkraft and furthermore SMHI.The result of the Calculations shows that a very efficient bio-mass dryer is needed, if yield of investments should be made possible. An Investment of 4,27 Mkr, in a dryer, could at a such criterium return 60000 kr/year, if the price of the biomass is 190kr/MWh.

Vidareutveckling av arbetsmiljö vid avtrådningstransportör

Valmet tillverkar och levererar kompletta system för energi, massa och pappersproduktion till kunder globalt. En enhet inom Valmet, Flash Drying & Baling Technology, levererar bland annat manuella avtrådningslinjer för avtrådning av massabalar som de distribuerar globalt.Examensarbetet har gått ut på att analysera arbetsmiljön för operatörerna vid Valmets avtrådningstransportörer och ta fram en produkt eller koncept som förbättrar säkerheten och ergonomin, samt framhäver Valmets varumärke.Med hjälp av fältstudier, intervjuer, marknadsundersökning, problemidentifiering samt funktionsanalyser och andra designmetodiska tekniker har projektet lett fram till ett koncept för säker hantering av massabalar mellan lager och avtrådningstransportör.Arbetet har lett fram till att denna transport/hanteringssäkring bäst sker vid avtrådningstransportörens kringutrustning, mer specifikt hos truckens klämaggregat. Projektet har lett till att ett klämaggregat har utformats för att förhindra ras av massabalar, på väg till och vid avlastning på avtrådningstransportören, men även för att framhäva Valmets varumärke. Konceptet har också visat sig ha potential kring hur själv trådklippningen kan gå till, vilket diskuteras i rapportens slut..

Återväxt av blåbär (Vaccinium myrtillus L.) efter ångbehandling : orsaker till effektiv kontroll

Steam was used as a site preparation method to eliminate unwanted bilberry (Vaccinium myrtillus L.) in the boreal forest. The efficiency of steam to suppress bilberry was compared with prescribed burning and cutting the bilberry. Different combinations of steaming and/or cutting the bilberry were set up to investigate in which way steaming and cutting influenced the sprouting and regrowth of bilberry. The regrowth of the bilberry vegetation was monitored for 40 month. Steam was most efficient in suppressing bilberry.

En jämförande studie mellan spikningsplåtsförband och WT-Tskruvar i limträkonstruktioner

Detta examensarbete har gjorts på uppdrag av Skanska Teknik med handledning av Johan Sjödin. Arbetets syfte var att jämföra olika limträförband, utförda av antingen spikningsplåtar eller WT-T skruvar, och komma fram till den bästa lösningen med hänsyn till bärförmåga, kostnad och utförandetid. I ett projekt har de spikningsplåtar, som används vid limträförband, börjat rosta under extremt fuktiga förhållanden fastän spikningsplåtarna är rostfria enligt tillverkaren. En fördel med WT-T skruvar är att de är gömda inne i träet och på så sätt inte i direkt kontakt med den aggressiva miljön, men även skyddad mot brand. Andra fördelar med WT-T är att utförandetiden är kort och kostnaden är lägre än spikningsplåtsalternativet.

Bakteriereduktion i diskmaskiner : Studie av olika metoder för att reducera bakterier

Bacteria are a problem that occurs naturally in dishwashers when the dish stands there dirty for an extended period of time. To get rid of the unpleasant smell that the bacteria is causing, the most common solution is to run a regular washingcycle which can cause problems for the environmentally-conscious consumers since this causes unnecessary energy waste and emissions of chemicals in the washwater. To solve the problem in a more environmentally-friendly way by directly attacking the bacteria with an appropriate bacterialreductionmethod can therefore be an attractive feature in a dishwasher. There are many different ways to treat surfaces that have been exposed to the bacteria. Some high-profile methods are UV-radiation, microwaves and oxidant (ozone) that all three have had success in reducing bacteria in different contexts.

Optimering av skumdämpande additiver För användning i en lufttorkande vattenburen rostskyddsprimer

The development of defoaming additives is steadily progressing and there are therefore always new and improved additives on the market. Some modern additives provide the desired defoaming effects by themselves, in contrasts to previous additives that needed to be used in combination with other additives. The task of this bachelors thesis was to evaluate the possibility of using these improved defoaming additives, with the aim to find alternatives that give the system better defoaming attributes while, at the same time, using less of the primary products. The tests were carried out in the coating type Teknocryl Aqua Combi 2780. The coating is a waterborne air drying acrylat-latex/alkyd based coating that can be used for both single coat painting and primer.

Torkat bioavfall som jordförbättringsmedel

The main project Dry preservation of source-separated organic household wastes involves a new technique for treatment of biowaste through drying. Investigations are going on to determine how the dried biowaste best can be used to close the natural circular flow of nutrients. The objective of this degree project is to determine if the dried biowaste can be used as a soil conditioner. By restoring the nutrients in the material to the ground, the natural circular flow is closed. A declaration of contents, including the nutrient levels, C/N ratio, pH and the electrical conductivity of the dried biowaste, was constructed and a germination test was done to make sure that the material did not inhibit sprouting.

Värdefullt förfall : om ruiner i förändring

This essay deals with ruins from the perspective of their cultural values ??and the impact of add-ons, protective add-ons and caring actions affect these values. The issues in the essay are; What are the cultural values of a ruin?  How have ruins been used?  How are ruins treated today?Initially the definition of the concept ?ruin? is discussed, what is a ruin? A building has an architectural biography: the creation, destruction, change and the decay. The concept of ruin is considered to be a state of this decay, rather than a dead building.

Mjölksyrabakterier som tillsatser vid ensilering av majs :

The project was initiated by Medipharm which produce microbial inoculants which used as additives to preserve forage. The main goal was to test three inoculants to produce maize silege. The following Medipharm produced inoculants were tested, Milab 393, Lactisil Wolecrop II, Lactisil 300 2. An untreated control was included in the study. The trial was done at Swedish university of Agriculture and Science in Alnarp, Sweden. Eurostar was the cultivar of the maize and was grown on 20, 5 hectares.

Skogen i barnlitteraturen : Kan den fungera som en källa till naturvetenskaplig kunskap?

The amount of various phosphorus (P) fractions in the sediment and the relationship between the amount of P and sediment particle size were investigated in a constructed wetland southwest of Linköping. Furthermore, the possible correlation between clay content in the sediment and distance from the inlet was investigated. Sediment samples were collected along three transects from the inlet to the outlet, with six samples in each transect. In order to measure the soluble P, an NH4Cl extraction was done. This was also analysed for total soluble P after oxidation with peroxodisulphate.

Sedimentation av lera och fosfor i en anlagd våtmark

The amount of various phosphorus (P) fractions in the sediment and the relationship between the amount of P and sediment particle size were investigated in a constructed wetland southwest of Linköping. Furthermore, the possible correlation between clay content in the sediment and distance from the inlet was investigated. Sediment samples were collected along three transects from the inlet to the outlet, with six samples in each transect. In order to measure the soluble P, an NH4Cl extraction was done. This was also analysed for total soluble P after oxidation with peroxodisulphate.

Frysa livsmedelsrester eller kassera dem för biogasproduktion : En studie, ur livscykelperspektiv, av energianvändning och växthusgasutsläpp

Food is widely consumed and in 2011 an average American devoured approximately one ton of food. The production of these goods requires large amounts of energy and contributes to 22-31 % of all greenhouse gas emissions occurring in Europe. More than one third of the produced food is discarded instead of consumed, and food waste make up about 30 % of the waste generated by households. 60 % of this food waste could be avoided if the eatables were handled in a better way.Avoidable food waste arises partly because residues from food are not taken care of, and because the food is not stored in a way that optimise its durability. Residues arises part- ly because of the contradictory and complex demands of everyday life and are, because of our busy lifestyle, difficult to avoid.

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