Sökresultat:
557 Uppsatser om Antropogenic influences - Sida 28 av 38
Variation in protein precipitation and phenolic content within and among species across an elevational gradient in subarctic Sweden
This project investigated how elevation and vegetation type influences variation in plant litter phenolic content and protein precipitation capacity among and within common plant species for two different vegetation types, heath and meadow, in a subarctic ecosystem in the Abisko region of northern Sweden. As nutrient availability generally decreases with increasing elevation as a result of decreasing temperature, I hypothesised that phenolic content would increase with elevation and be higher on the heath than the meadow. To test this, the total phenolic content and protein precipitation capacity was estimated in leaf litter from 13 species in both heath and meadow vegetation across an elevational gradient ranging from 500 to 1000 meters above sea level (m.a.s.l.) in the study region. The results showed that elevation and vegetation type both had a strong impact on both variables. Total phenolic concentrations decreased with elevation for the meadow, and were greater for the heath than the meadow.
Förbränning av pellets framställda av defibrerad granråvara :
Fuel pellets are in Sweden mainly produced from sawdust and cutter shavings. Before the pelletising process the raw material is dried to attain consistent moisture content and ground up in a hammer mill. In the densification process (pelletising) the ground material is forced through holes in a rotating die. This heats up the wood particles which cause them to soften and self bond. After the process the pellets are cooled, sieved and bagged.
The milling process creates a wide range of particle sizes.
Spädbarnsmassage, ett verktyg för socialt arbete? : En kvalitativ studie
The overarching purpose of the study was to examine the effects of infant massage and to put these effects incontext with mother ? child attachment. The intention was also to study whether these effects have any relevancefor social work. This was accomplished by studying earlier research, theory and laws but also through interviewswith mothers who have followed through a course in infant massage. The main questions of the study was: Afterthe completion of the course and after using the massage technique at home, does the mother experience that thebond with their child is influenced by the technique and are the mothers more apprehensive of their child?ssignals? Has the mothers observed any signals from their infants during the massage and if so what has beentheir reaction? Does the mothers experience that the massage has provided any physiological effects? Has thecompletion of the course provided the mothers with knowledge that?s had an effect in their ways of parenting? Inwhat way does the earlier research, reports and laws deal with the benefits and risks of a secure or insecureattachment, and can the quality of the attachment have any meaning in the social work? A qualitative approachwas chosen with respondent-interviews.
En personlig katedral : Designprocessen i praktiken och som pedagogisk modell
AbstractTitle: Coach, vän eller både och? ? en kvalitativ studie om coachning inom arbetslivetAuthors: Jonas Näslund & David ÖhrlingTutors: Ulla Moberg & Larsåke LarssonPurposeThe purpose of this thesis is to examine how coaching in working life serves, aiming to find what influences the interaction between coach and client. To seek to answer the purpose we raised a number of research questions which discussed, among other the coach's intentions and the parties' relationship.TheoriesThis thesis is based on a number of different theories, where the Leader-member Exchange Theory is considered the main theory. LMX is used when studying the relationship between a manager and an employee. Other theories used in this thesis are for example the Social exchange theory and one-on-one-coaching.MethodThe methods used in this thesis are semi-structured interviews, observations and recordings of coaching sessions.
Increased growth in Norway spruce (Picea abies (L.) Karst.) through small annual additions of nitrogen (N) fertilizer
This project investigated how elevation and vegetation type influences variation in plant litter phenolic content and protein precipitation capacity among and within common plant species for two different vegetation types, heath and meadow, in a subarctic ecosystem in the Abisko region of northern Sweden. As nutrient availability generally decreases with increasing elevation as a result of decreasing temperature, I hypothesised that phenolic content would increase with elevation and be higher on the heath than the meadow. To test this, the total phenolic content and protein precipitation capacity was estimated in leaf litter from 13 species in both heath and meadow vegetation across an elevational gradient ranging from 500 to 1000 meters above sea level (m.a.s.l.) in the study region. The results showed that elevation and vegetation type both had a strong impact on both variables. Total phenolic concentrations decreased with elevation for the meadow, and were greater for the heath than the meadow.
Platons demoniska Eros i dialogerna Faidros och Gästabudet
The purpose of the current study is to present an interpretation of Eros and its demonical aspect as it is described in Plato?s dialogues Phaedrus and The Symposium as well as to attempt to throw some light over the question in which way the erotic as such influences Plato?s notion of how to pursue philosophy. In the first part of the essay an account is given of the Platonic Eros as a unifying element and as striving for being. I defend the position that in the context of the interpreted dialogues philosophy is thought of as an erotic enterprise which takes place as a coming closer to the object of love. This coming closer takes place as remembering in Phaedrus and as creating in beauty in The Symposium.
Vad tycker medarbetarna?: en studie av medarbetarnas
pensionspreferenser vid LKAB
One trend that can be seen in the EU countries is that employees want to exit from the workforce before they turn 60 years. A Dutch study of some EU countries has noticed that an early retirement from labor in many countries is considered as a social right. This has created an ?early exit-culture?. Large early outflows of the labor have created an institutionalization, the right to cease work early.
"Man slutar tänka, man rycks med i någon slags gruppsykos" : En diskursanalys av massmedias diskussion kring våldtäkten i Bjästa 2009
The aim of this thesis is to analyze the media discussions of the rape in Bjästa 2009 and to reveal how stereotypical illusions of ethnicity, religion and gender affect how media understands and defines violence. The rape in Bjästa occurred in a ?Swedish context? but has been defined as honor related in other arenas outside media. This discussion occurred because the whole village turned against the woman that was raped and supported the perpetrator? a phenomena that speaks against the idea of an equal society and a behavior that is usually understood as honor related and something that the ?others? do.
Private Label-tillverkning : Faktorer som ligger till grund för att leverantörer på den svenska marknaden tillverkar private label
Background: In the past 10 years private label has increased significantly in the Swedish grocery market. This is an important strategic event, which is a great challenge to suppliers as it causes stiff competition. To handle this situation an increasing number of suppliers have to make the decision whether to produce private label or not.Purpose: The purpose of this study is to find and analyse factors that influence suppliers in the Swedish grocery market to produce private label. On this basis we intend to confirm or develop existing theories within the field of study.Research method: The study has a qualitative approach where empirical data has been gathered through interviews with suppliers and retailers in the Swedish grocery market.Results: This study has identified factors that underlie suppliers? decision to produce private label.
I huvudet på en lapplisa : En studie om hur parkeringsvakter upplever sin arbetssituation
The aim of this study is to examine which factors in a traffic wardens? situation at work that promote and which that inhibit satisfaction at work. The aim of this study is also to examine if there are any differences in the work experiences for traffic wardens that work alone versus those who work in a team of two. The following questions are examined in the study:?Which factors promote and which factors inhibit the work situation for traffic wardens??Are there any differences between traffic wardens that work alone and those who work with another colleague?The selection consisted of eight traffic wardens, of which four of them work with another colleague while the other four work by themselves.
TV4 - kan kommersiellt och demokrati gå hand i hand? : - En studie om extern påverkan i en tv-kanal och hur kommersiella och demokratiska intressen förhåller sig till varandra
Introduction: As the media landscape has changed so has fierce competition in the market, giving an effect of stronger commercialization of the media. Societal problems in our society are caused by increased commercialization and market orientation. Media has gone from trusted social institutions to focus on their own economic interests, where owners are expected revenue. The content of the media is characterized more and more by entertainment, because it attracts a larger audience. On one side media is expected to contribute to democracy in society and on the other they are expected to contribute profits to their owners, which creates a conflict in today?s media society.
Slussning in i Sverige. En kritisk diskursanalys av integrationspolitik i valrörelsen 2002
Today, Sweden is to be regarded as a country formed by the influences and effects of immigration. The government is considering integration as a process aimed to influent all forms of welfare politics and as a project working both at an individual and at a social level. The aims of integration policies are to guarantee equal rights and opportunities, to form a public community characterized by diversity, and to mobilize all citizens to participate in and to be jointly responsible for a social development characterized by mutual respect and tolerance. During the Swedish election campaign of 2002, integration policies became one of the most reported and discussed political questions in the media. The aim of this essay is to study and analyze discursive statements on integration policies made by politicians during this election campaign.
Klimatet på tre platser i Sverige 2071-2100 i jämförelse med Europas klimat 1961-1990 med fokus på temperatur, nederbörd och avdunstning : En analytisk studie från en simulering av Rossby Centres regionala klimatmodell, rca3.
Due to human influences on the climate an increase in Earth's mean temperature is today an accepted conception. With a rising temperature discussions have started how the climate in an area will change in the future. Equally interesting and important is it also to study the precipitation in an area. Precipitation is the factor, next to temperature, that affects most how a climate in an area looks like and feels. Since precipitation is connected to evaporation the latter parameter is also of interest to study.
Transienta strömmar i HVDC-Light
This thesis gives suggestions as to how to design a wooden-based wave-power buoy. The thesiswas carried out at Uppsala University in collaboration with the Division of Electricity and AppliedMechanical Engineering. The product was conceived and developed taking into consideration anumber of requirements put forward by the supervisor, Magnus Rahm. The most importantdemands were that the material used should be able to withstand pressure from the sea withoutbeing damaged and that the production costs should be low.Department of Engineering Sciences, Division of Electricity at Uppsala University was visitedseveral times to discuss issues including the various ideas with the supervisor Magnus Rahm, andwith several people in the department.The work started by studying available literature in order to get background information aboutsuitable methods available for the project and to see how similar projects were carried out. Thereason for this was to get a better understanding of this particular problem and how to solve it.After consulting the supervisor, the group decided to construct four different buoys using fourdifferent materials.
Produktion och dimensionering av träboj i vågkraft
This thesis gives suggestions as to how to design a wooden-based wave-power buoy. The thesiswas carried out at Uppsala University in collaboration with the Division of Electricity and AppliedMechanical Engineering. The product was conceived and developed taking into consideration anumber of requirements put forward by the supervisor, Magnus Rahm. The most importantdemands were that the material used should be able to withstand pressure from the sea withoutbeing damaged and that the production costs should be low.Department of Engineering Sciences, Division of Electricity at Uppsala University was visitedseveral times to discuss issues including the various ideas with the supervisor Magnus Rahm, andwith several people in the department.The work started by studying available literature in order to get background information aboutsuitable methods available for the project and to see how similar projects were carried out. Thereason for this was to get a better understanding of this particular problem and how to solve it.After consulting the supervisor, the group decided to construct four different buoys using fourdifferent materials.