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2715 Uppsatser om Biological effects - Sida 5 av 181
Biologisk bekämpning av Fusarium graminearum
Fusarium graminearum causes reduction in both yield and quality in cereal grain worldwide. One of the diseases it can cause is Fusarium Head Blight (FHB). Both sexually and asexually produced spores can infect living plants. Asexual conidia are produced in the mycelium while sexual ascospores form in asci in perithecia on debris. In biological control, living organsims are used to control pests and diseases.
Optimering av biologisk fosfor och kvävereduktion i ett reningsverk för hushållsspillvatten
In connection with Henriksdals wastewater treatment plant (WWTP) a smaller plant is situated called Sjöstadsverket where new methods for wastewater treatment are tested and evaluated in different process lines. On one of the lines experiments with enhanced biological phosphorous removal (EBPR), have been carried out to evaluate if it is a good alternative to traditional chemical phosphorus removal. This thesis evaluates the results from the experiments conducted during fall 2005.The incoming water from Hammarby Sjöstad consists of only household wastewater, which gives a wastewater with high concentrations of nutrients and organic carbon. This is partly positive, because one of the limiting factors for effective biological phosphorus removal is the lack of easily biodegradable organic carbon. The high concentrations of ammonium and phosphorus demand a high reduction to achieve the requirements of outgoing concentration.To optimize the process experiments with different recirculations and different aeration techniques have been made.
Har energidryck någon kognitiv effekt i kombination med alkohol? : Med fokus på komponeneten koffein
Background: Energy drinks have been found in everyday-stores since 1997 and their popularity have increased over time. Consumtion of energy drinks takes place because of their ability to increase concentration and to decrease fatigue but also because of the popularity the drinks have got. Target groups for these stimulating beverages are adolescents and young adults. Energy drinks contain caffeine, taurine, glucuronolacton, carbohydrates and B-vitamins and voices have been raised about the eligibility for young people to ingest large quantities of these kinds of substances. Because of the properties of these substances it has become popular to mix energy drinks and alcoholic beverages to make up for the negative effects of alcohol and to be able to drink larger quantaties.Aim: The aim of this literature work was to investigate cognitive effects of the combination of caffeine in terms of energy drinks and alcohol and to determine if these effects could be harmful.Method: This literature work is based on five scientific articles retrieved from PubMed.
Informativiteten kring finansiella instrument : En studie om hur informativt företag framställer sina instrument i årsredovisningen
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.
Miljonprogrammets omfattande upprustningsbehov : Vem tar räkningen?
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.
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.
The study group consisted of 62 participants from different workplaces that
responded to a survey.
I rymden kan ingen höra dig stereotypisera : En analys av rasismen i fem science fiction-filmer och hur den påverkar demokratin
Movies can be a source to enjoyment, cultural enrichment and relaxation. But movies are also filled with messages and subtext, that effects the one who watches the movie. One of the effects are the reproducing of stereotypes and racism. This essay concentrates on the five best grossing science fiction movies in Sweden between the years 2009 ? 2014.
Miljö- och Handelsgåtan : Intellektuella egendomsrätter och dess implikationer i en globaliserad verklighet
This paper seeks to discern the political factors that determine the results of negotiations in international cooperation. On the one hand, it makes a contribution to the broader theoretical debate on international regimes by combining regime theory and theories on globalisation into an integrated framework for the analysis of international policy results, or in this case treaties (theoretical objective). More generally, globalisation theory will help us understand why it has become important to initiate international cooperation, and regime theory to elucidate how these international cooperations emerge. To many observers, it is the large transnational corporations of the rich North, which have done best out of free trade. Through the huge influence they wield over governments at the WTO (World Trade Organisation), these corporations have won the freedom to move around the globe without restriction, making use of cheap labour, and locating wherever they can best tap into the largest and most lucrative markets.
Light pollution : consequences and sustainable lighting design
Light has always fascinated humans but ever since the invention of the first light
bulb, the use of artificial lighting has accelerated dramatically. Darkness has never
been as rare as today and the overuse of lighting has created a new phenomenon
called light pollution. Most living beings are biologically dependent on the
recurrent twenty-four-hour rhythm of light and darkness, called the circadian
cycle. Human beings are evolutionary developed after this circadian rhythm and
the effects of constant artificial light is yet unknown. Scientists fear the consequences
of constant lighting and what it means physically, mentally and philosophically
for the human species.
Hydrolys av primärslam för förbättrande av biologisk fosforreduktion vid behandling av hushållsavloppsvatten [Hydrolysis of primary sludge for enhancement of biological phosphorus removal in household wastewater]
Hammarby Sjöstad is a new district of southern Stockholm built with focus on reduced environmental impact by recirculation of materials and sustainability. The environmental goals aim to cut the water consumption by half and a separate storm water treatment. Thus, the wastewater will be more concentrated and will originate from the households only. The Sjöstad project includes the idea of a local treatment plant for the household wastewater. To evaluate this possibility, Sjöstadsverket, an experimental treatment plant was constructed.
Praktisk Fysik : Laborationernas och demonstrationernas vara eller inte vara.
Several scenarios point toward a future where we are far more people on Earth than today, where most of those people will live in cities and where oil no longer dominates in the transport systems and in agriculture as an energy source and where less energy will be available to us. The report investigates what areas in traditional ecological knowledge that can contribute to the transition that follows a future with less energy and establishes three areas with the potential of becoming important: areaspecific biological knowledge in societies that are more dependent upon its surrounding environment and its natural prerequisitesthe local management of these biological resources, which often means a fair sharing and sustainable handling of the resources and which has been observed in Nobel price awarded Elinor Ostrom?s researchthe world views that lie behind how the environment is considered and managed, world views that can inspire and point toward how we in the future should formulate world views that do not give the destructive modern management of the environment It is also noted that the magnitude of the city living in the future is a historical news and that very little research has been done in how traditional knowledge can be transferred into this kind of living..
Om associationer till vatten
This paper is intended to provide a picture of which associations water can wake in the human
mind from the perspectives of garden history as well as from that of environmental
psychology. I hope to paint a fairly broad picture of our perception of water that can serve as a
basis for discussion and as a starting point for different forms of design work in landscape
architecture. The historical perspective emphasizes the importance of water as a condition for
the emergence of gardens and in a wider perspective the importance of water in early cultures.
Also, I describe a picture of how water has been used throughout the history of gardens from
early Egypt to the baroque era. The garden history analyzed from an art historical perspective
gives a picture of human associations to water, and the history behind these associations is
presented. As a compliment to the art history approach, I have chosen to highlight our
associations with water from the perspectives of environmental psychology and evolutionary
science.
Minnen i marknadsföring: Nostalgia in advertising, communication effects, relationships and critical periods for establishing emotional bonds to collective events
Many perceive a boom in nostalgia and what is retro, especially within the marketing discipline. This thesis studies how nostalgia functions in the advertising context and aims to shed light on which effects there are from nostalgia evoking communication, what connections there are with other important factors as well as aspires to develop the understanding of the underlying psychological aspects and the emotional bonds to events (as nostalgia evoking stimuli in the thesis), which pave the ground for nostalgic emotions. Point of origin has been classical measures of communication effects and models of connections and causality and to these important factors have been added. Results show clear connections and correlations between nostalgia and positive communication effects, even with control for other factors that may interfere. However, the results show that some factors have moderating effects that should be important to take into consideration, namely how well the brand and the event in the ad are perceived to fit the advertising context.
Memories in Marketing: Nostalgia in advertising, communication effects, relationships and critical periods for establishing emotional bonds to collective events
Many perceive a boom in nostalgia and what is retro, especially within the marketing discipline. This thesis studies how nostalgia functions in the advertising context and aims to shed light on which effects there are from nostalgia evoking communication, what connections there are with other important factors as well as aspires to develop the understanding of the underlying psychological aspects and the emotional bonds to events (as nostalgia evoking stimuli in the thesis), which pave the ground for nostalgic emotions. Point of origin has been classical measures of communication effects and models of connections and causality and to these important factors have been added. Results show clear connections and correlations between nostalgia and positive communication effects, even with control for other factors that may interfere. However, the results show that some factors have moderating effects that should be important to take into consideration, namely how well the brand and the event in the ad are perceived to fit the advertising context.
Zenbuddhistiska meditationsträdgårdar - för ökat välbefinnande i Sverige
This paper is intended to provide a picture of which associations water can wake in the human
mind from the perspectives of garden history as well as from that of environmental
psychology. I hope to paint a fairly broad picture of our perception of water that can serve as a
basis for discussion and as a starting point for different forms of design work in landscape
architecture. The historical perspective emphasizes the importance of water as a condition for
the emergence of gardens and in a wider perspective the importance of water in early cultures.
Also, I describe a picture of how water has been used throughout the history of gardens from
early Egypt to the baroque era. The garden history analyzed from an art historical perspective
gives a picture of human associations to water, and the history behind these associations is
presented. As a compliment to the art history approach, I have chosen to highlight our
associations with water from the perspectives of environmental psychology and evolutionary
science.