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483 Uppsatser om Archaeological Conservation - Sida 25 av 33

Bräkanden från förr : att skilja får från getter utifrån kv. Apoteket 4-5 i Visby

To differentiate between bones from sheep (Ovis aries) and bones from of goats (Capra hircus) is a long lasting challenge for zoologists, archaeozoologists and osteologists. Especially considering archaeological remains which are often found fractured and poorly preserved due to taphonomic processes. Zeder & Pilaar?s (2010) and Zeder & Lapham?s (2010) methods of species differentiation has shown promising results when used on bones from modern sheeps and goats. This paper aims to evaluate these methods by exerting them on excavated bones from kv.

Att restaurera forna tiders beståndsstruktur : ett exempel från Jämtgaveln

In Sweden today so-called "prescribed nature conservation burning" is performed due to the change in silvicultural law, certification and an increased knowledge regarding the field of fire in the forest landscape. The aim is to re-create structures and qualities made by the fire regimes of the past, though on a much smaller geographical scale. The structures and qualities to be re-created are for example broad leaf stands, trees with large diameter, heterogeneous stands regarding variables such as age and diameter. If we increase our knowledge of the constitution of forests characterized by fire, then we will be able to set goals for what achievements to reach both on landscape scale and stand scale. The aim of this paper is to try to describe how a stand from the past was composed regarding mainly the spatial arrangement and compare it with the stand of today in the same place. This to be done by using relict material, that is stumps and dead standing trees.

Brygder och besvärjelser : En arkeobotanisk studie av medicinalväxter och den medeltida staden Nya Lödöse

The study of medicinal plants is a popular subject that, at least in the archaeological sciences, has met a lot of criticism due to the lack of physical data. It is problematic to distinguish the medicinal plants from local flora since many herbs that were used often could be found in the nearby vegetation.  The purpose of this essay is to archaebotanically analyze samples from the medieval town Nya Lödöse and compare the data with a previous analysis from the site and a literature study. The herbs meadowsweet (Filipendula ulmaria), lady?s mantle (Alchemilla sp.), sweet gale (Myrica gale), hop (Humulus lupulus), common tormentil (Potentilla erecta), St. John?s wort (Hypericum perforatum), henbane (Hyoscyamus niger), catnip (Nepeta cataria) and motherwort (Leonurus cardiaca) have been selected for closer analysis since they occur with frequency in the historical medicinal texts and in previous analysis made on the site.

Genetic diversity of Roseroot (Rhodiola rosea L.) from Sweden, Greenland and Faroe Islands

Roseroot (R. rosea L.) has gained more attention the last years, mainly because of its phy-topharmacologic properties. Even though many reports in roseroot have been published, only a few articles are dealt with the genetic diversity. The Nordic Genetic Resource Center has collected Roseroot material from Sweden, Greenland and Faroe Islands under different expeditions. The samples were analysed to study the genetic diversity study.

Gäddan & fisket i Ringsjöholm : en osteologisk metodstudie i säsong & bevarande

This paper presents the results from an osteological method study of the Ringsjöholm fishbone material. Ringsjöholm is located in Scania, southern Sweden and is 14C dated to 5960-5200 B.P. The aim of this paper is to critically analyse methods used on fish bone material in estimations of season. Three different approaches were used to estimate the fishing season at the Ringsjöholm settlement; 1) identified species, 2) size estimations of the pike based on Enghoffs (1994-95) regression formulae of os dentale, and 3) growth rings of the pike vertebrae.The identified species and the size estimations of the pike points to the fishing being active both during spring and summer. Growth rings analysis of the pike vertebrae didn?t give any quantitative results because of fragmentation.

Anpassad skötsel - exempel på hyggesfritt skogsbruk i Mellannorrland :

Total protection is often the option chosen when protecting forests with high environmental values. An alternative to total protection is application of management regimes that do not interrupt continuity of tree cover. This study focuses mainly on continuous cover forestry (CCF) in forest stands already protected. All objects are situated in the county of Jämtland in northwest Sweden. The purpose of the study was to attain a greater knowledge about CCF practices.

Kartläggning av order- och leveransprocessen för höghastighetsseparatorer hos Alfa Laval Tumba AB

The project description is to draw an extension or annex to the existing Nationalmuseum building from 1866.The annex is designed to complement Nationalmusems activities and contain internal and public functions. Artentering the building must not be crossed by public visitors. Art and staff must be able to seamlessly move betweenthe extension and the main building. The new building includes a public study room for scholars working withthe collection of art on paper, workshops, conservation studios, art spaces and warehouses. Additionally, theannex is designed to host a large number of office spaces.With the renovation of Nationalmuseum they intend to open up the today built in south atrium.

Energieffektivisering av industribelysning : Planering av belysningsanläggning i mekanisk verkstad

In Uppsala, Sweden, Vattenfall has a combined heat and power plant. On the premises there is an engineering workshop with old fluorescent and mercury lamps that need to be replaced. This provides a great opportunity to save energy and money by installing more efficient lighting. The main purpose of this study was to present two functional and energy efficient lighting systems including control system. The lighting systems were designed by investigating the working environment, measuring illuminance and by simulations in the software DIALux.

Fågelskådare och lantbrukare i samarbete : kommunikation och naturvård i jordbrukslandskapet

In the spring of 2006 a pilot project was initiated by The Rural Economy and Agricultural Societies of Sweden together with The Swedish Ornithological Society in order to increase collaboration between bird watchers and farmers. The project as a whole comprised 11 farms in South-Central Sweden. The aim was to benefit the decreasing populations of bird species related to the agricultural landscape. The purpose of this master thesis was to study how similarities and differences between bird watchers and farmers regarding opinions about nature, landscape, agriculture, birds and nature conservation have influenced the collaboration. Four of the farmers and five of the bird watchers that participated in the project were included in this study.

Framtidens Hus

The company Sol & Energiteknik wanted to examine the possibility to make a standardhouse totally energy independent. Based upon this I have, during the spring of 2007,examined the possibilities available at the market today through litterature studies, contactwith several companies and reading reports at the internet.The first thing to examine has been to determine the energy consumption for a standardhouse, and find out if there are better technologies to be used for energy conservation.My conclusion in this matter is that there are possibilities today for building a house moreenergy efficient.When I had reached the point at which my design for the house was decided, I also hadto choose the different products to use to produce energy as well as to store that energy.To produce heat and electricity to the house I decided to use a wind turbine and a solarwater heater.The most difficult part of designing a house that is energy independent is that theproduced energy must be stored somehow. Storing the heat is relatively easy beacuse theheat can be stored in a large water tank. The electricity is a bigger problem beacuse itmust be stored in batteries, which today are too expensive to be used in a standard house.In the future producing and storing hydrogen might be used to produce electricity, buttoday that technology is both expensive and not tested enough.My final conclusion is that a standard house can not be built to be totally energyindependent today, unless it is very expensive to connect the house to the electricitynetwork. As an alternative solution I came up with a proposal for a house which isconnected to the electricity network and have some amount of own produced energy.This house prooved to be a good investment if you choose to build it today, and it couldbe a very good investment in the long run beacuse energy prices increase every year..

Bokmärken - En historisk redogörelse med en inblick i hur de förvaras och bevaras i museala samlingar

This thesis is intended to review and create a greater understanding for the history and originsof printed scraps from late eighteenth century to the beginning of the twentieth century.A questionnaire survey was sent out to several Swedish museums, containing questionsconcerning their collections, possible exhibits, special difficulties and types of damagesconcerning scraps and their current storage. A visit to the Gothenburg city museum storagewas made to take a closer look at their scrap collection and how they were stored. Thisresearch resulted in an understanding regarding the current situation of printed scraps, whichunfortunately appears to be quite poor and inattentive. These results are presented in the firstchapter.The second chapter describes the history of printed scraps, followed by a chapter presentingrelevant printing techniques and technology. This is followed by various chapters dealing withhow the printed scrap has been used through the ages, history and development of motifs andthe album's significance.

Verktygsanvändning som miljöberikning för gulbröstad kapucin (Cebus xanthosternos)

That animals should be able to express their natural behaviours, even in captivity, has become a more important issue lately. Nowadays Zoos work much more with educating people and helping conservation projects for endangered species. This is two important reasons for making the environment as natural as possible for zoo animals. Both in captivity and in the wild capuchin monkeys have been seen to use tools such as stones and sticks to get food and are therefore seen as a natural and important behaviour for them. This study was carried out to evaluate a specific sort of environmental enrichment where a group of three capuchins had to use sticks to get different kinds of food out of bottles.

Upplevelser, påverkan på vardagen och egenvård : - En litteraturstudie om MS-relaterad fatigue

Syfte: Litteraturstudiens syfte var att beskriva upplevelsen av MS-relaterad fatigue, hur den påverkade vardagen och val av egenvårdsstrategier.Metod: Beskrivande litteraturstudie. Resultatdelen innehåller 15 st vetenskapliga artiklar, varav 8 st har en kvantitativ ansats, 5 st har en kvalitativ ansats och 2 st har båda ansatserna. Artiklarna söktes i databaserna PubMed och Cinahl och genom manuell sökning.Resultat: MS-relaterad fatigue var en unik och individuell upplevelse. Fatigue hade en multidimensionell och handikappande inverkan på vardagen, som berörde såväl fysiska, psykiska, sociala och kognitiva aspekter. Personer med MS hade utvecklat olika egenvårdsstragier för att minska, förebygga och dölja konsekvenserna av fatigue. Tre av artiklarna saknade en tillräcklig beskrivning av inklusions- och exklusionkriterier. Fyra artiklar saknade en adekvat beskrivning av bortfall. Slutsats: MS-relaterad fatigue bidrog till en försämring av fysiska, psykiska, sociala och kognitiva funktioner och stod i direkt relation till sämre livskvalitet.

The effect of cold stratification on germination in 28 cultural relict plant species : with the purpose of establishing germination protocols

Cultural relict plant species from the Nordic countries have been collected by the Nordic Genetic Resource Center (NordGen) for the purpose of conservation. To ensure high seed vitality in store, regular germination tests need to be conducted. It is important to get a correct viability status, but the knowledge of seed dormancy in the cultural relict plants is often poor. The objective of this study was to investigate how seed dormancy is affected by cold stratification. The study includes 31 accessions from 28 species with the purpose of establishing germination protocols.

Förbättring av U-värde i träkonstruktion för fönster med Aerogel

When constructing a building, a number of aspects must be harmonized in order for it to fulfill requirements ? a building must fulfill requirements such a load-bearing, conservation of energy and a good indoor environment by means of, among other things, moisture proofing .Moisture problems in buildings can affect health negatively. As we are increasingly staying in indoors, demands on a good indoor environment are higher.This work starts with examining moisture problems in slab-on-ground solutions, and then links the various scenarios to moisture problems in a concrete slab of a real building. The building with moisture problems is located in Årby by in Borlänge and moisture damage was found in the slab at an apartment adjoining wall.By reviewing literature written within the field of moisture problem, making hand calculations and modeling in the program Comsol Multiphysics, judgments are made to find explanations as to why the rise of moisture occurred in the building in Årby by.Generally, the following guidelines may be used to reduce the risk of moisture problems in slab-on-ground constructions:Drying of construction moisture before laying the floor material.Using draining layer beneath the slab, to prevent capillary suction.Using insulation under the slab, partly for comfort and to establish the temperature difference between the ground and the concrete slab.Avoid direct contact between the wood and concrete, due to degradation and fouling smells that normally occurs.If necessary, use additional vapor barrier.In addition to the above, there are various methods for moisture-proof and moisture-monitoring by design or by the method ByggaF suited for the entire construction process various events..

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