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2715 Uppsatser om Biological effects - Sida 4 av 181
Nitrogen fixation among boreal feather mosses along a clear-cut chronosequence
The Swedish boreal forests are limited by nitrogen (N) availability. While biological N2 fixation by cyanobacteria hosted by pleurocarpous feather mosses are important sources of N input to natural boreal forest ecosystems, little is known about the patterns of N2 fixation in silvicultural systems. This study investigates the biological N2 fixation rates of two boreal feather moss species (Pleurozium schreberi and Hylocomium splendens) along a chronosequence from clear-cut to mature forest, as well as the vegetation characteristics along the chronosequence. Measurements and samples were collected from 32 forest sites that were classified into four age classes (clear-cut, pre-commercially thinned, thinned and mature forest). The sites were located near the city of Arvidsjaur in northern Sweden.
Respiratorisk sinusarytmi under påverkan av emotionell stimuli: en studie av emotionell påverkan från biologiska och ickebiologiska hotrelaterade bilder.
In this paper respiratory sinus arrhythmia (RSA) was examined in relation to two kinds of threatening pictures, biological and nonbiological. Based on the results of prior research the hypothesis was claimed to note a difference between the two types of pictures regarding RSA and gender differences regarding cardiac activity due to the emotional stimulus. ECG and respiration were collected from 36 adults, 17 women and 19 men. There were no significant relationship between the different types of threatening pictorial stimuli, and no significant effects of gender were found. The results support some of the prior research on the topic but are in conflict with other.
Utredning om en ökad biologisk behandling av matavfall i Halmstads kommun
Environment and sustainable development are very current topics in today's society, bothnational and international. The government's bill 2004/05:150 ?Swedish environment objectives - a common commission? contains several environmental quality objectives, that in turn is divided up in smaller secondary objectives. One of the secondary objectives says: ?Latest year 2010 shall at least 35% of the food waste from households, restaurants, largescale kitchens and shops be recycled through biological treatment.
Våtmarker i urbana miljöer : växtgestaltning och planering
The practice of landscape architectural involves forming the space in our cities and suburbs, as well as the landscape surrounding. The need of exploiting green environment leads up to, among other issues, flood problem during heavy rain and overfed water environments. The problem is partially caused by the shortage of knowledge, how the environment is responding of the innovations made by the city- urban planning and how to get sustainability.
Research and knowledge how to take care of our environment, in a natural way, is increasing. The object of the thesis is to propose control and balance in urban wetlands, and discuss the difference a plant design can do.
The thesis deals with discourses in the field of landscape architecture, biological diversity, dam construction, limnology, planting design and management, pollution of the environment and urban design practice.
"Särskilt inte här i Sverige" : en studie av hur genus och religion framställs i läroböcker för gymnasieskolan
The aim of this paper is to examine how gender and religion is described and portrayed in relation to one another in Swedish textbooks. The research questions used in order to reach the aim of the study is what interpretation of gender and feminism is represented in the textbooks and is the gender perspective consistent regarding all religions described in the textbooks, or does it vary depending on which religion that is described?This study is based on four Swedish textbooks used when teaching religion in Swedish upper secondary school. The books chosen are published after the most recent curriculum for the upper secondary school, published in 2011. The curriculum gave new directions stating that questions of gender in relation to religion should be a part of the education.
Compost and its effects on soilborne plant pathogens
Certain microbial residents from composts are known to possess the ability to suppress soilborne plant pathogens. Trichoderma spp. and Gliocladium spp. are commonly found in composts and are perhaps the most wellknown hyperparasites of fungal pathogens, which may also be naturally present in compost. Trials have many times proven them to be effective against plant diseases caused by soilborne pathogens such as Pythium spp., Phytophthora spp.
Knista kyrkog?rd: ett rekonstruktionsf?rslag f?r den v?stra kyrkog?rden
This study focuses on a reconstruction proposal of a small part of a rural churchyard that has
lost a big part of its history, in form of its conformation and plant material. The chosen part of
the cemetery was established in 1938, and this proposal is an interpretation of the architect?s
original plan, the workers wishes and my own observations and experiences of the place. In this
proposal I have tried to balance the plants composition to create an environment that can benefit
the biological diversity, that fits the locations habitat and today?s maintenance.
"Det kan vara byta p-piller lösning, det kan vara ingen lösning alls... ingenting är svart eller vitt där" : En fokusgruppstudie om barnmorskors handläggning och uppfattningar av p-piller och biverkningar
Objective: To study midwives management, practice and reasoning regarding contraceptive counseling for women who are experiencing "mild" side effects of the pillMethods: Four focus groups, made up of three to five midwives per group, participated in focus group discussions. Qualitative design with the method ?Think-Aloud? has been used to collect data and the material was analyzed using content analysis.Results: The study identified three categories, the first "How midwives practice regarding the side effects of the pill," shows that midwives have a systematic approach when meeting with women who are experiencing side effects of the pill. The next category "Using a holistic and professional approach for women" highlights that the midwives take women's side effects seriously and that midwives respect individual woman?s autonomy.
Störst går först - Vägen till fördärv eller lyckat förvärv Ekonomistyrningseffekter vid förvärv - En fallstudie av ÅFs förvärv av Energo
This bachelor thesis aims to analyse the effects of changes in management control systems following acquisitions, and deduce whether or not these effects are in line with the acquiring firm's objectives of the acquisition. Through a case study of technician consultant firm Energo, acquired in 2010 by ÅF, the study assumes the perspective of the acquired firm. Data has been collected through in-depth interviews at Energo and ÅF and complemented by internal documents to enrich and validate specific facts and statements. Data was then arranged and analysed through Otley and Fierriera's (2009) framework Performance Management Systems to understand how management control systems were constituted before the acquisition, what changes were made following the acquisition, how this process was accomplished and how it was experienced, in order to come to conclusions about the effects of these changes. The study concludes that the changes in Energo's management control system following the integration with ÅF, had significant effects on the outcome of the acquisition, primarily as it led to a high rate of Energo's employees resigning.
Färden till hållbarhet : en studie kring påverkan och ansvarstagande för en hållbar turismutveckling i utvecklingsländerna
The purpose of this dissertation is to describe and analyse the effects of tourism in developing countries and the attitudes and working methods of Swedish tour operators towards sustainable tourism. We have chosen to use a qualitative research according to a hermeneutical view. We have carried through in-depth interviews with eight tour operators. The theories have been divided into the effects of tourism and sustainable tourism goals which have social, economic and environmental starting points. The empiricism describes the work and activities of the tour operators and compiles the interview material divided into attitudes on tourism effects and responsibilities.
Samband mellan virulensgener och VTEC-infektioner : Riskklassificeringssystem för VTEC
To curb greenhouse gases and mitigate climate change is one of the biggest challenges human society face today. Carbon dioxide (CO2) has accumulated rapidly in the atmosphere as a consequence of burning of fossil fuels and deforestation. The aim of this study is to explore two methods to store carbon dioxide in geological formations and biological sinks. The aim is also to discuss the two mitigation options from a sustainable perspective and whether it can lead to a better environment and benefits for local and global societies. The research questions are: Which method to store carbon dioxide, geological or biological, is the most effective? Which method to store carbon dioxide, geological or biological, has the greatest potential to promote sustainable development for local communities?The method used is a comparative case study and presents four case studies that explore the potential for CO2 storage offshore in Norway and Brazil; and in tropical forests in Mexico and Brazil.
Bäckmans stenhuggeri AB : Möjligheten att skapa ett nytt segment inom stenbranschen
The function of budgetary controls is to control the resource allocation within companies. It can also be an instrument for measure and control subordinates and/or business units? performance (Van der Stede 2001). This paper concerns the latter; when the budgetary control function is used to measure and control subordinates performance based on budget. Previous research in this area has not yet accomplished to explain the effects of tight budgetary control which Hartman (2000) considers as the main issue to be concerned about in management accounting research.Previous research has presented contradictory findings regarding tight budgetary control explained by positive effects as well as negative effects during the last decades.
Membranbioreaktorteknik- en framtida lösning på Lundåkraverket? : Membrane bioreactors- A future solution at Lundåkra wastewater treatment plant?
Membrane bioreactors (MBR) combined with biological phosphorous treatment (Bio-P) has been investigated if that could be an alternative to the future expansion with conventional active sludge treatment at Lundåkra wastewater treatment plant (WWTP) in the proximity of Landskrona, Sweden.The results showed that the surface demand in the biological treatment will be reduced with 67% with the MBR-alternative compared to a conventional activated sludge process. The nutrient removal in the MBR-solution was decreased or unchanged for nitrogen-, phosphorous- and organic parameters. However, the energy demand will increase with an estimated cost of approximately 1 million SEK annually. Moreover, the extra chemical consumption is estimated to cost 370 000 SEK annually.The disturbances caused by filamentous bacteria such as sludge dispersal could be resolved with MBR-technology because the membranes are not affected by these organisms. The Bio-P process combined with MBR-technology works if the wastewater recirculates from the membranes to an aerobic zone.In the proposal, there will be a new pre-treatment step, for instance hole screens.
Konflikter -En kvantitativ studie om effekter av konflikter och konfliktstrategier på arbetsplatsen.
A quantitative study was conducted with the aim to investigate whether individuals use a specific conflict strategy when they are in a task conflict or a relationship conflict in their workplace. The study also examined whether individuals experience positive or negative effects of a task conflict or a relationship conflict when a specific conflict strategy have been used. Previous research explains the effects of task conflicts and relationship conflicts at the workplace (De Dreu, 2008) Likewise lifts the effects of the conflict strategies interaction, avoidance, and power and coercion (Hoerr, 2005; Meyer, 2004; Trudel & Reio Jr., 2011). However it does not tie together what the conflicts and conflict strategies have for effects together. This also means that it is impossible to discern if there is a strategy that is frequently used in a specific conflict type.
Slack på mellanchefsnivå : Ger budgetstramhet och budgetdelaktighet önskade effekter på slack?
The function of budgetary controls is to control the resource allocation within companies. It can also be an instrument for measure and control subordinates and/or business units? performance (Van der Stede 2001). This paper concerns the latter; when the budgetary control function is used to measure and control subordinates performance based on budget. Previous research in this area has not yet accomplished to explain the effects of tight budgetary control which Hartman (2000) considers as the main issue to be concerned about in management accounting research.Previous research has presented contradictory findings regarding tight budgetary control explained by positive effects as well as negative effects during the last decades.