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243 Uppsatser om Nutrient limitation - Sida 6 av 17

Do 25 years old skid tracks restrict growth and survival? : a study on growth conditions for the planted regeneration in a rainforest rehabilitation project

The rainforests of the world are important not only to the countries in which they grow but to the world as a whole. They influence oxygen and water circulation as well as carbon sequestration which in turn affect global radiation and global warming. The forest also have great value and in Malaysia as in many other tropical countries large volumes are harvested which leaves great areas of degraded forest with little growth and biological diversity. Due to their low financial value these forests are often transformed and used for other purposes than forestry such as oil palm plantations. The trees are often transported out of the forest using large bulldozers. They are heavy which causes compaction of the forest floor and during transport the top soil layers are moved to improve mobility.

Effekt på mjölkavkastning hos mjölkkor vid ökad andel bete i foderstaten

Compared with a few years ago, the cost of concentrates has increased substantially and because of that an increased proportion of pasture is of interest. Pasture is cheap and the farmer does not have to harvest when the cows do it themselves by grazing. This saves both money and time. According to research milk yield decrease with an increasing proportion of pasture in the diet. This is because cows on pasture will have lower dry matter intake than cows with supplements.

CSR & Etik: En tillämpning av normativ etik på CSR i praktiken

The neo-classical conception of the market place does not provide a framework to account for ethical or moral action. As a result, the neo-classical model is unable to explain the impact of ethical and moral issues on business sustainability present in the modern economy. To address this limitation, this thesis investigates whether theories of ethics can help explain the motivations and actions of stakeholders within the field of Corporate Social Responsibility (CSR). In addition, the thesis explores whether theories of ethics are presented differently within aspects of the stakeholder model. Semi - structured interviews were conducted with various stakeholders within the CSR sector, including a NGO, a commercial firm and a CSR consultancy firm.

Marktäckande, lågväxt vegetation på ställverksmark : en biologisk bekämpningsmetod mot ogräs

Unwanted vegetation on the land of electric transforming stations is a problem, in the sense that it contributes to higher fire risks and also constitutes an obstacle for people performing maintenance operations at the station. Such unwanted vegetation is controlled using herbicides and mechanical measures. Since the use of herbicides implies environmental hazards, there is a need to find alternative ways of fighting the unwanted vegetation. Investigation into suitable plants for ground cover, trials in the greenhouse, trials in the field, soil analyses and compilation of experiences from similar trials are parts of this work. The paper also contains analyses of possible environmental benefits and economical gains. There is also a final discussion of some proposals regarding alternative weed controlling methods.

Optimerad hygienisering vid kompostering av avloppsslam

The aim of this study was to in laboratory experiments investigate how addition of urea, ECOX and structural materials can optimize sanitization during composting of sewage sludge. Today we strive for a sustainable society and the importance of closing the nutrient loop increases. It has therefore become even more important to safely reuse plant nutrients from human excreta to agricultural land. Partly because it increases the sustainability of society as the world's supply of many nutrients are finite, partly because it promotes human health, both by reducing disease transmission and by increasing Agricultural production. An untapped resource such as sewage sludge that is rich in nutrients and humus-forming materials could replace parts of the commercial fertilizers used in Sweden today. owever, sewage sludge contains undesirable substances such as heavy metals and drug residues, and pathogenic microorganisms.

Den medeltida bebyggelsen i Kungsgårdsområdet i Gamla Uppsala

The intent with this paper is to investigate the medieval habitation in central Old Uppsala. This time-period has over the years been neglected. Therefore I wish to summarize and ana-lyze the medieval habitation to see what can be said about its continuity, and also to investi-gate why it is located in certain areas.Due to the amount of source material I have limited my investigation area to the central Old Uppsala. It is possible that this limitation will affect the result of the research but without the limitations the investigation area would have been too large to handle.The source material has been collected from excavation reports and the summarized. My theory is material culture and material agency.

Tillskottsutfodring av smågrisar under digivningsperioden :

Weaning is one of the most critical events in the piglet production with problems such as growth check and post-weaning diarrhea as a result. The lighter the piglets are when the growth check occurs, the harder they have to get back to normal growth rate. Creep feeding of piglets is used to reduce the problems by increasing the weaning weight and adapting the digestive tract to a starter diet. Hodge (1974) showed that the sow?s milk can not provide enough nutrients for maximal growth rate.

HUR KAN VI REDUCERA DEN INTERNA ÖVERGÖDNINGEN SAMT REGLERA ALGBLOMNINGAR FRÅN ATT NÅ EGENTLIGAÖSTERSJÖNS KUSTZON ?? : En vision om att återfå en balans i Östersjön genom att skörda algöverskott och använda biomassan som en framtida råvara.

The Baltic Sea is one of the world?s most polluted seas. Increased discharge of nutrients due to greater populations of people, together with a slow water exchange, creates great stress on the sea. Too much nutrients leads to increased growth of algae and causes problem in the ecosystem. Even if we reduce nutrient discharge the problem still exist in the ocean. When algae dies and sinks, more nutritional substances is produced called "internal eutrophication". This phenomenon will grow in the future due to a warmer climate and the problem is spreading towards the coastal zone, which is an important site for fish recreation. By removing the abundance of algae, the nutritional and toxic substances are reduced and the algae biomass can be a future resource for biofuel production..

Identifiering av fosfatfosfors käll- och flödesfördelning i ett litet jordbruksområde

Eutrophication of lakes and streams are nowadays a well known environmental problem and implies an enrichment of the nutrients phosphorus (P) and nitrogen (N). Phosphorus is considered to be the most important component for the growth of aquatic plants and leads in too large quantities to an intensification of growth. Phosphate (PO4) is the fraction of phosphorus that can easiest be taken up by plants and thus have the greatest impact on eutrophication. Increased plant growth in lakes and unfavorable conditions for aquatic animals are two examples of negative consequences. A significant portion of the increased nutrient supply to nearby water can be derived to phosphate leaching from agricultural areas, where private sewers and agriculture is two main sources.

Nutritionens betydelse för akut traumatiskt hjärnskadade patienter

The aim of the literature review was to illuminate the importance of nutritional management to patients who have sustained a traumatic brain injury (TBI) and describe nurses responsibility and meaningful function in the nutritional support. TBI patients tend to be associated with hypermetabolism and hypercatabolism, resulting in negative nitrogen balances. The results reveal increased energy expenditure and assessments of needs energy requirements at the TBI patients. This study determining the route of feeding: enteral versus parenteral nutrition. Furthermore describes complications associated with enteral feeding.

Enhetschefer : En studie om ledarskap inom äldreomsorgen

My purpose is to describe and analyse how care managers experience their position as middle managers in the public sector. I have used a qualitative interview method to answer this question and also to capture my six interview persons opinion and understanding of their own position as middle managers. From my six interviews I noticed some difference in their opinions about how it is being a care manger. The results show that the role as care managers have challenges such as to intertwine their own notion how the caring of the elder should be with strict politic decisions. Other challenges are the limitation of economic recourses and reorganisations.

Om solidaritet och ansvarstagande i världen : en diskursanalytisk studie kring internationaliseringen av svensk försvars- och säkerhetspolitik

The world is increasingly coalescing, ecologically, economically and culturally. Many problems can no longer be solved within the own state borders and the limitation of the territorial state is obvious. Jürgen Habermas means that a world domestic politic without a world government is what this progress need. Therefore it is important that national interests become less central and the solidarity between people is given priority in international relations. The focus of this thesis is therefore a critical discourse analysis of the current position of the internationalisation of Swedish security and defence policy.

Specialpedagogik ur ett lärarperspektiv : Hur arbetar läraren i klassen för att inkludera elever med ADHD i klssrumsundervisningen?

It is a well-known fact that children with ADHD are hyperactive and have a hard time concentrating; therefore it is of interest to examine how teachers deal with this fact. This study expands the understanding of how teachers work with children who has ADHD; the main purpose of this study has been to examine how teachers view students with ADHD and how they work to include these students in the classroom environment.  special pedagogy has been used to analyze the results. The results are based on four interviews in two schools in south of Stockholm with teachers who work in classes that contain children in the third grade, some of the children have been diagnosed with ADHD and some only have strong characteristics for the functional limitation. Findings suggest that teachers? use structure, planning and the modification of students? individual needs to make them included in the classroom education.

Katana databas 1.0

The task to this thesis has been to create an application, Katana-databas 1.0, for analysing c-code. The generated output gets stored in a data structure which content in the end of the program run gets written in a textfile which gets used by Katana. It's a tool for reverse engineering, developed by Johan Kraft at Mälardalens institute.Katana-databas has got the following limitations. (1) It can only handle preprocessed files, meaning it doesn't contain any rows beginning with "#". (2) Only complete files can be handled.

Att leva med kroniskt obstruktiv lungsjukdom :  Patienters beskrivning av sitt dagliga liv. 

Background;Chronic obstructive pulmonary disease (COPD) is a lung disease characterized by airway obstruction. Common signs of COPD are the slow process and shortness of breath on exertion. The most important treatment is to quit smoking. Most nurses, regardless of where they work, will meet these patients, often when the patients are having respiratory disorders. Aim;the aim of this study was to illuminate how patients with COPD describe the daily life based on how he/she experience and cope with the disease.

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