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Concrete hardens as a result of chemical reactions between water and cement. Cement is a hydraulic binder, in the reaction the cement binds water-molecules. This is an exoterm process, heat is produced during the reactions. How fast this process proceeds is much depending of the temperature. The amount of heat produced during the hardening of the concrete is also depending on the thickness of the
Det har blivit allt vanligare med direkthandel i stora enplansvaruhus, där kunder plockar sina varor direkt från pallställ. Dessa pallställ går ofta från golv till tak och är lastade med varor ända upp till taket. I taket förekommer ofta fackverksbalkar i stål som bär upp stomsystemet. Vid en eventuell brand i ett pallställ kan det bli stor lokal flampåverkan med snabb upphettning i delar av fackve
Below every building there is a different type of foundation work, it can comprise point carried piles or floating piles that pursues down the loads in the ground. A foundation work without piles could also be used, but big subsidence can arise in particular at bigger building constructions, it is however most important that the differentiate subsidence becomes too big. These subsidences can influ
Problem: How does collaboration between architects and engineers work? Which are the advantages and disadvantages in the collaboration? How can you make the cooperation better? Object: The purpose of this thesis is to make a connection between architect students and engineers, to find the differences between us and to try to collaborate. We wanted to know how difficult the cooperation could be, i
Glulam is almost exclusively the chosen material of timber frame structures. Of those, three-hinged (three-pin) portal frames are incomparably the most common type. Being both statically determinate and stable against horizontal forces in its own plane offer both practical (basic constructive details) and economical benefits. The design of the haunch allows for various solutions: it can be curved
A silo discharge with a bulk material consisting of iron ore pellets is studied. The silo is about 65 meters high and 38 meters wide. The quality of pellets decreases when they are exposed to high stresses while moving. The stresses are therefore not allowed to exceed a certain threshold. It must also be possible to trace the origin of a sample from the discharge. To fulfill these two demands the o
In this report the shear-capacity of adhesive glass-joints was investigated. A number of various adhesives were tested; glues and silicones. Tests were conducted with small specimens to evaluate the characteristics of the adhesives. With the results of the tests material models were evaluated in the finite element program Abaqus. Linear-elastic and hyper-elastic models were used. Large-scale tests
The polymer PTFE has become an important and widely used sealing material in the valve industry in recent years. It provides good strength and low friction, but it is sensitive to stress relaxation, i.e. loss of stiffness with time. This in turns may cause problems with leaking seals. The objective of this master’s dissertation is to perform a stress analysis of the PTFE sleeve used in an indust
Glulam arches can be used when designing structures with large spans such as halls or arenas. Wood has low density compared to steel and concrete which keeps down the dead weight of the structure. The cross section of glulam arches is often built up as a box-section for efficiency reasons. However, wood shows strongly orthotropic behavior where maximum allowed stress perpendicular to grain is only
Problem/Bakgrund: Varför har enskilda individer som fångas på bild av övervakningskameror på allmän plats inte rätt att få tillgång till bildmaterial som de själva förekommer i? Syfte: Uppsatsens syfte är att undersöka huruvida utlämnande av bildmaterial till enskilda individer som fångats på bild av övervakningskameror på allmän plats skulle fungera stärkande för den personliga integriteten hos
LYCCA is a detector system consisting of different types of detectors which can be used flexibly to meet the individual requirements of different experiments focused on studying exotic nuclei far off the line of stability. It was developed for the HISPEC/DESPEC programme which is part of the NUSTAR collaboration at the future Facility for Antiproton and Ion Research (FAIR) in Darmstadt, Germany. T
This report incorporates a product styling development concept carried out on Scania a vehicle manufacturer known for its premium long haulage trucks, located in Södertälje, Sweden. The report consists of the development of the writers’ conception and implementation of the term “Driver Focus” on Scanias truck interior. The project is carried out using various different industrial design techniques
Tetra Pak is a large scale organization that provides its customers with a food packaging solution based on laminated carton board in various package formats. The packaging material is produced in more than 50 converting factories represented world wide. The production develops the material in roll form that are loadable in the filling machines. Each roll arrives to the filling site with a barcode
A rising problem within electronics today is that, since the frequencies have increased dramatically, it is now very difficult to measure signals. If a traditional probe is used, then the direct contact will destroy the signal. The general idea behind this master thesis project is to make use of the crosstalk between transmission lines to create non contact test points. This thesis aims to evaluat
På grund av svåra metodologiska och praktiska svårigheter domineras forskning om bolagsstyrning i allmänhet och styrelseeffektivitet i synnerhet av relativt ytliga modeller. Så kallade black boxstudier är mycket vanliga, och kontrasteras mest av rent konceptuella modeller utan kvantitativa amibitioner. Den här uppsatsen kikar in i den svarta lådan och utforskar den interpersonella kontexten i styrDue to severe methodological and practical difficulties, research on corporate governance in general and board performance in particular is dominated by relatively shallow models. So called black box studies are very common, and are contrasted mainly by conceptual models without any quantitative ambitions. This paper peeks into the black box, exploring the interpersonal context within the board ro
I denna uppsats undersöks koncernbeskattningsreglerna i en idrottskoncern. Fokus är på hur de allmännyttiga ideella föreningar som i ett dotterbolag äger en idrottsarena skall beräkna en marknadsmässig hyra. Detta med anledning av Skatteverkets granskning av denna typ av idrottsföreningar som tog sin början år 2007. Efter att denna granskning inleddes har flera idrottsföreningar blivit upptaxeradeThis thesis will investigate the Swedish group taxation for income tax purpose for sport groups. I will focus on how the public non-profit organizations who owns their own sta-dium should calculate a market rent. This is due to the Swedish Tax Agency starting an audit of sport associations in 2007. After this audit a couple of sport associations have been claimed to pay more tax because the Swedis
Titel: Institutionellt ägande och dess inverkan på rörlig ersättning – En kartläggning av samband mellan institutionellt ägande i svenska börsbolag och andelen rörlig ersättning till VD. Tema: Företagsekonomi, Bolagsstyrning, Kandidatuppsats 15 Akademiska Poäng, Ekonomihögskolan, Lunds universitet. Seminariedatum: 2012-01-13 Författare: Lindström Johan, Svensson Magnus & Wirén Emma Handledare:Title: Institutional ownership and its impact on variable remuneration – A survey of the relation between institutional ownership in Swedish listed companies and the proportion of variable remuneration to the CEO. Subject: Business Administration, Bachelor Thesis in Corporate Governance, 15 ECTS credits, School of Management and Economics, Lund University Seminar date: 2012-01-13 Authors: Lindströ
Den Paleoproterozoiska Birimiska terrinen består av vulkaniska och sedimentära bergarter i grönstensbälten och metasedimentära bassänger som har blivit intruderade av två generationer granitoider. Den Birimiska terrinen utgör en stor del av den västafrikanska kratonen. Den bildades under en period med omfattande juvenil magmatism som skapade stora volymer med kontinental jordskorpa. Många frågor aThe Paleoproterozoic Birimian terrane consists of volcanic and sedimentary rocks occurring in greenstone belts and metasedimentary basins that have been intruded by two generations of granitoids. The Birimian terrane comprises a large part of the West African craton. It formed during a period of extensive juvenile magmatism that led to the creation of a large area of continental crust. Many questi
På Vombverket produceras dricksvatten genom att först sila vatten från Vombsjön och därefter sprida ut det över infiltrationsdammar på Vombfältet. Vattnet infiltreras sakta ner genom markens isälvsavlagringar till ett naturligt grundvattenmagasin, och pumpas sedan upp från 120 brunnar. För att det organiska materialet från sjön ska kunna brytas ner effektivt är det viktigt att syrehalten i den omäDrinking-water for municipalities in south-western Sweden is produced at the Vomb water treatment plant east of Lund by first letting water from Lake Vombsjön pass through strainers and then spread out over recharge basins built on the Vomb Plain. The water infiltrates and slowly percolates down through the glaciofluvial deposits to a natural groundwater reservoir, and is thereafter drawn from 120
