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1540 Uppsatser om Heat flow - Sida 53 av 103

Interferences during analysis of polyphenols in fruit juices

One of the most commonly used methods for analysis of polyphenols is the Folin-Ciocalteu (FC) method, where the FC reagent has been reported to interfere with some substances in fruit juices. The interfering substance that is present in the highest amount in most fruit juices is ascorbic acid. In this study, the total phenolic content (TPC) of three fruit juices was analysed by the FC method as well as with an enzymatic method with hydrogen peroxide oxidoreductase type II (HRP) for comparison. To investigate how the interfering ascorbic acid affects the TPC, juice samples were analysed after removal and addition, respectively, of ascorbic acid. The samples were analysed with HPLC both before and after the extraction phase of the FC method.

Utveckling av elektroniskt ärendehanteringssystem med inriktning på användbarhet

Medius är ett IT-företag som hjälper företag att effektivisera sina processer med hjälp av IT. För att kunna konkurrera med andra företag och få nya kunder krävs ständigt ny utveckling. Uppdraget med detta examensarbete var att hitta lösningar till ett nytt användargränssnitt för produkten Medius Flow. Vi valde att göra detta med metoden användbarhetsdesign som vi har anpassat för våra egna förutsättningar och mål. Med användbarhet menas att ett system är effektivt att använda, ändamålsenligt och lätt att lära.

Cash Management : en studie av netting som verktyg vid likviditetshantering

Background: Liquidity and the management of liquidity are of great importance for companies. Cash management is not a new term, but the need for it has increased recently, for one thing because of the internationalisation and growing harmonisation between the countries in Europe. Netting is a cash management technique, where receivables and liabilities are netted. This technique can be used to release capital and increase the company?s cash flow by reducing the number of transactions in the internal payment system.

Vision Nollenergihus : Energiförsörjning av passivhus med sol- och vindenergi

Climate change is the modern society?s common issue. The developed countries areconsuming more than what is sustainable, and the climate change due to the use offossil fuels can be seen clearly. EU has specified goals, in order to stop furtherdamage, which demand that every member state have to reduce its energyconsumption by 20 % before 2020 and 50 % before 2050, relative to 1995.The Swedish government uses a number of instruments to encourage reduction in theusage of energy, but every individual has to contribute to reach the goals.With increasing energy price the cost of living is going up. A lot of people are lookingfor ways to save energy and not be affected as much by the increasing price.Investments for insulation, replacement of windows and replacing old heating systemfor a new efficient heat pump is getting more and more common.This thesis is about investigating the possibilities in becoming independent from buyingenergy for households.

HIV/AIDS-politik i Sydafrika : En innehållsanalys av de tre nationella strategiska planerna för HIV/AIDS

AbstractA master thesis in business administration 30 hp, Jönköping International Business School, Spring semester 2012.Authors: Sarah Henningsson & Jim BörefeltSupervisor: Urban ÖsterlundTitle: Commercial real estate investment ? Factors from an investor perspectiveBackground and problem: In this study, we focused on the real estate investor and the factors and issues that may arise and affect real estate investment decisions. It has been put in relation to the other parties in the process of assessing and affecting real estate investment decision. The parties that we studied are real estate investors, banks, brokers and appraisers.Purpose: This study aims to describe and explain the factors that affect commercial real estate investments for investors, credit assessment conducted by the bank and valuation made by the broker and appraiser.Delimitations: We have chosen to limit the study to commercial real estates including residential, retail and office properties, industrial properties and combinations thereof. Agriculture buildings and forestry plots are not examined.

Sjöherravälde : är Corbetts teorier applicerbara på modern ubåtskrigföring?

Sjöherravälde, Corbetts teorier inom ramen för modern ubåtskrigföring.Studie om Corbetts teorier och hur de appliceras på modern ubåtskrigföring. Sjökrigets grunder beskrivs inledningsvis samt av Corbett sammanställda metoderna för etablerande, bestridande samt utövande av sjöherravälde och ubåten som vapen. Därefter följer en studie av historiska källor rörande modern ubåtskrigföring. I denna ingår Scapa Flow 1939, ubåtsstrid vid slaget om Atlanten och USAs sjöfartskrig mot Japan samt sänkningen av Belgrano och det inledande skedet av Falklandskriget 1982. Fokus ligger på de olika metoderna som Corbett beskriver för sjöherravälde: avgörande slag, blockad, fleet in being, försvar mot landstigning, sjöfartskrig, amfibieoperationer samt stödjande av expeditionsstyrkor. Med bakgrund i dessa utmynnar uppsatsen i en diskussion om modern ubåtskrigföring som i stor utsträckning verifierar Corbetts teorier..

Förskolor med passivhusteknik : En utredning av passiva förskolor

As a result of directives from EU, with the ambition to reach environmetal goals, The German organisation Passivhaus Institut has defined a passive house. A passive house is a building that is very energy efficient and makes a small impact on the environment. The energy from the inhabitants as well as the appliances & fixtures in the building should equal the energy that is required to heat the building. A Swedish version of the passive house definition has been defined, taking into account the climate conditions and the difference in building regulations.This thesis is a request from Skanska on how it can improve and develop an ongoing passive house project, involving an infant school. The intention of this thesis is to identify difficulties & display potential development areas for infant schools.The method of research conducted is as follows: interviews of clients, ventilation consultant, consultant for heating system and an energy calculation consultant, an inspection of the infant shcool in process, investigation of completed infant schools and a study of relevant literature.From this research it was found that it is difficult for infant schools to pass the criteria for passive houses. The conclusion of this thesis provide several guidelines on how to improve the outcome of existing projects & the steps needed to be taken for future development in this area..

Informationshantering hos personer med läs- och skrivsvårigheter och dyslexi : Hur personer med läs- och skrivsvårigheter och dyslexi hanterar och bearbetar information i arbetslivet

The purpose of this study has been to investigate how individuals with reading- and writing disabilities and dyslexia handle their information need in the workplace. The method that has been used is a qualitative study made with interviews with individuals who have these problems, to see how they think and feel about the flow of information on their everyday basis. The study?s respondents are working women between the ages of 27 and 47 years old and they have reading- and writing disabilities and dyslexia. The most interesting results of this study are that the respondents are avoiding jobs where they need to read and write much and where they also do not like changes in their job situation.

Effektivisering av lagringsplatser. Ett förbättringsprojekt på Mekpart AB

Aeroseum is an aviation museum located in an old military underground hangar. The ventilation system in the hangar is designed for the military purpose of the hangar. This design includes a solution with air flowing through the space between the construction of the hangar and the rock surface. The solution is intended to avoid a buildup of inflammable gases. This design leads too high humidity levels in the hangar.

Miljö- och hälsoskyddskontorets tillsynsarbete - ur verksamhetsövarens perspektiv

Nanofiltration is a proper way of preparation of drinking water. The process has a lot in common with reverse osmosis where a semipermeable membrane is used to separate a pure water flow from the remaining water. A pilot plant was used to ensure that nanofiltration is a suitable technology for a specific waterworks station in Glemmingebro, Ystad. The purpose was also to find out if a pH-adjustment is needed for feed water in a possible full scale plant.  In this case nanofiltration is used mainly to remove sulphate and calcium since the raw water contains concentrations of these substances which exceed the limits for potable water. It is important to receive a high recovery (RC), otherwise the deliviery of water won?t be high enough.

Biogas : En systemanalys av Solna Stads matavfallsprocess

Global warming is a huge issue that humans have contributed to through over-exploitation of natural resources and extensive usage of fossil fuels. Now more than ever, we need to embrace a recycle thinking and reuse our waste, for example through producing biogas from our food waste. The purpose of this report was therefore to identify the energy usage and emissions resulting from the biogas chain which spans from Solna Stad to Uppsala Vatten. Furthermore, potential efficiency improvements were to be identified and proposed. This report focused mainly on the first part of the biogas chain that includes the collection of the food waste and the reloading process.

Näringsretention i återskapad våtmark på betesmark : studier av en mad vid Bornsjön

It is important to construct or recreate different types of wetlands and study their retention of nutrients, since knowledge of their effectiveness in this matter is poor. In 2003 a wetland was constructed on an old meadow on the western shore of Lake Bornsjön in central Sweden. The main purpose of the wetland was to reduce the amount of phosphorus entering the lake, which is the back-up water supply for Stockholm when the city cannot obtain water from Lake Mälaren. Large areas around Lake Bornsjön consist of agricultural land and the nutrient concentrations in the inflows to the lake are usually relatively high (approx. 1 mg/l total nitrogen and 0.05-0.1 mg/l total phosphorus).

Betydelsen av hästens hud och päls för reglering av kroppstemperatur i kyla ? vad händer vid klippning och täckning?

The horse is a homeothermic animal and to keep a constant body temperature in winter season is important. Acclimatisation is to provide means for a good thermal insulation consisting of skin, hair, and an outer air layer. The skin covers the horses body and it is composed of three main layers where the top layer of the epidermis consists of dead keratinized cells that are constantly being sheed. The dermis is composed of collagen connective tissue that give the skin its strength. The bottom layer with subcutaneous fat provides a thermal insulation and can be used as an energy reserve in cold weather.

Whispers in the forest : a field study about communication within Vi-agroforestry

The purpose of this study is to explore and understand the social and structural dynamics of an organization working with questions regarding development. The organization in question is Vi-agroforestry, a Swedish based NGO that works around the lake Victoria basin and the focus will be on their office in Rwanda. I have used a qualitative approach and conducted participatory observation as well as semi-structured interviews to gather data. I have emanated from the individuals in the organization by using a theory of microsociological organisationperspecive to understand how the employees create and is created by the existing social structures. (Blomberg, 2003) Even though the office in Rwanda only is a relatively small part of Vi-agroforestry?s operations it is still highly individual and independent from the rest of the organization.

Synchronous Latency Insensitive Design in FPGA

A design methodology to mitigate timing problems due to long wire delays is proposed. The timing problems are taking care of at architecture level instead of layout level in this design method so that no change is needed when the whole design goes to backend design. Hence design iterations are avoided by using this design methodology. The proposed design method is based on STARI architecture, and a novel initialization mechanism is proposed in this paper. Low frequency global clock is used to synchronize the communication and PLLs are used to provide high frequency working clocks.

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