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1031 Uppsatser om Degradation rate - Sida 38 av 69

Pre-treatment of grain for ethanol production during storage

Ethanol for automotive purposes is an issue much debated and researchers disagree about the benefits of bioethanol. Converting energy-rich crops into ethanol suitable as motor fuel is a complex process and continuous development and improvements of processes and material used are important steps in the work of developing environmental friendly fuels. Grain is usually preserved by drying which consumes a lot of energy. Alternative storage of high-moisture grain in airtight storage systems reduce the energy required to produce bioethanol and studies have also shown that ethanol yields are increased more than 10% in ethanol fermentations of moist grain compared to dry. Airtight storage is often not perfectly airtight so biocontrol agents are necessary in order to preserve the grain.

Katterna på Kattstallet i Åkeshov : vilka katter är det som insjuknar?

The aim of this study was to see if there is any group of cats that are at greater risk to get sick and/or be euthanized during their stay at a cat shelter with no-kill policy. The study was conducted at Åkeshov cat rescue center in Sweden and cats that entered the center between the 1th of June 2010 and the 31th of December 2011 was used in the study. This study focused on factors regarding gender, origin, level of socialization, incubation period and the proportion of euthanized cats. In this study, the kind of illness weren?t taken into account. This study showed that the gender of the cat didn´t affect the risk for illness.

En flödesutjämnande driftstrategi för Uppsalas fjärrvärmesystem : En ändrad styrning av framtemperaturen

This thesis examines a possible control strategy to minimize flow fluctuations in Uppsala?s district heating system. High variations in flow rate may lead to complications caused by hydraulic constraints in the district heating system. These complications, such as inadequate pressure and temperature levels, increase the risk of heat delivery failures. It is therefore important to avoid such situations both for the producer and for the customers.Typically, the forward temperature is controlled by using a rough correlation with respect to the outdoor temperature.

Optimal inkalvningsålder för rekryteringskvigor till mjölkproduktion : relaterat till data ifrån egen besättning

Heifer?s growth may be divided into three main phases: calf period, puberty and pregnancy. When the heifers are about three months old a critical period begins. This period ends when the heifer reach puberty and have her first oestrus at around 9-12 months of age. In the critical period the mammary gland starts to grow at a fast rate and Insulin-like growth factor-1 (IGF-1) transport the growth signals to the mammary glands.

Mjölkkors behov av att ligga och att sova

The aim of this literature review was to investigate whether the modern dairy cow has the time she needs to lie down and to sleep and what deprivation of these behaviors could lead to. Current research seems to agree on the fact that sleep is essential but there is no uniform explanation of the function of sleep, even though there are many theories. It is known that sleep has an important impact on the immune system and that sleep is increased in case of an infection. Sleep deprivation causes many negative effects including reduced function off the immune defense, increased metabolic activity, malnutrition and increased heart rate. It has also been found that deprivation of sleep could cause increased mortality.

Mätning av tjänstekvalitet i bibliotek: användning av LibQUAL+ i Sverige

The aim of this master thesis is to measure library service quality in two groups of libraries, newly developed and well established, and to see if there are any differences in the users perception of the dimensions in LibQUAL+. The thesis also examines the different perception of quality for the user groups: undergraduate students, graduate students, and faculty. Another approach is to test the Swedish translation of LibQUAL+. Different theories on service quality are presented but the main theories are from the marketing perspective. The grounding and development of LibQUAL+ is described as well as the use of the instrument in different libraries.

Tillgängliggörande Vs Distribution : Är en skiva en skiva om den enbart finns digitalt?

 The aim of this essay is to examine if the Swedish Major labels are moving towards making their catalogue available on different platforms rather than their traditional distribution of music. The new technology has really stirred things up for the major labels and file-sharing has been a problem for a long time. The labels have a history of fighting new formats instead of embracing them and listen to what their consumers actually want. We have found that the majors now are in the leading edge of music distribution due to technology and that is a first. We have focused this essay on if the consumption of music has changed the distribution of it or the other way around and found that people have changed their ways of consuming music over the years and the labels have always been forced to adapt.

Förslag på riskklassificeringsmodell av ekologiskt kontrollerade aktörer : En jämförelse med andra länders ekologiska kontroll

In order to facilitate trade between EU members, the European Committee has created regulations that will govern supervision of organic products. Every regulatory agency shall, according to the European Committees regulations, carry out a risk classification of each organic producer they regulate. This study for The National Food Administration compares regulation of Swedish organic products with other countries, and aims to produce a simplified model based on risk that can be the beginning of the risk classification model that Sweden in the current situation don?t have. The thesis is based on three questions: 1) What criteria should we use for assigning organic food producers? 2) How do selected European countries and frontrunners rate organic producers and what can Sweden learn from them? 3) How might a national classification model of organic production look in order to ensure an equivalent level of regulation and prevent competition among private inspection bodies? A review of information gathered from the different countries gave differing results.

Känsloigenkänning i form av ansiktsuttryck med Kinect

Facial expressions are a part of our body language that helps us to clarify the verbal communication between humans. We use our facial expressions every day, both consciously and unconsciously, to express emotions and attitudes depending on the situation. The hypothesis of the study is: Given a facial expression, how well can Microsoft Kinect, as an input method, determine a person?s feelings with the two algorithms Naive Bayes and Sequential Minimal Optimization? The feelings are limited to happy, sad, surprised and disgusted. With the help of Kinect, a person?s facial data, both coordinates of the face and parameterized data, were saved and used for machine learning.

Obstruktiv FLUTD - ett nödvändigt ont eller möjligt att förebygga?

FLUTD - Feline Lower Urinary Tract Disease ? is a complex disease and a common sight in the veterinary setting. Although FLUTD excluding urethral obstruction may be discomforting for the cat and its owner due to symptoms such as periuria, stranguria, hematuria, dysuria and pollakiuria, obstruction presents an acute and potentially lethal form of the disease as a result of uremia and disturbances in fluids, electrolytes and acid-base balances. A study of literature has been performed to investigate the causes of FLUTD with urethral obstruction and the actions available to the owner to avert them. Potential causes of obstructive and non-obstructive FLUTD have been found to include infections, uroliths, urethral plugs, neoplasia, anatomic abnormalities, trauma, neurogenic or iatrogenic causes. Most commonly a cause cannot be identified and the terms idiopathic FLUTD or feline idiopathic cystitis are used. As the mortality rate due to urethral obstruction likely is somewhere around 5.8-8.9% and FLUTD including and excluding urethral obstruction constitute great inconveniences, precautionary measures are warranted.

Njurfunktion hos hypertyreoida katter : en jämförelse mellan serumkreatinin och serumcystatin C

Hyperthyroidism and chronic kidney failure (CKD) are common diseases in older cats. It can be difficult to evaluate kidney function in cats suffering from both conditions simultaneously. In the daily clinic serum creatinine is the analysis of choice when evaluating kidney function and secondary glomerular filtration rate (GFR). This marker does not, however, detect kidney damage until about 75 % of the function is lost. There are several other techniques available when investigating GFR but none are readily available for the small clinic.

Plockanalys i Härjedalens kommun : En utvärdering av plockanalyser på hushållens säck-och kärlavfall under åren 2007-2011

As a result of an increased consumption, waste volumes has grown steadily throughout the 1900s, and this puts great demands on an efficient and ecological sustainable waste management on both local and national level. In order to evaluate collection and disposal of household waste, a large number of Sweden´s municipalities are using waste analyses. The overall aim of this study has been to summarize and assess results from waste analyses executed in Härjedalen´s municipality during the years 2007-2011.The evaluation has given information about the household waste´s composition, quantity and change in time. The report´s objective has been to create a basis which the municipality can use in planning of future information efforts and other measures, and give some proposals on how these can be designed and targeted. Therefore, the report also highlights research on motivations factors that affects environmentally conscious behavior such as recycling, and how different instruments like information can be used to promote this.

Generationsskräpsamling med explicit kontroll av hårdvarucache

This report evaluates whether an interpreted high-level garbage collected language has enough information about its memory behaviour to make better cache decisions than modern general CPU hardware.With a generational garbage collector, depending on promotion algorithm and generation size, around 90% of all objects never leave the first generation. This report is based on the hypothesis that, because of the low promotion rate, accesses to higher generations are sufficiently rare not to benefit from caching.To test this hypothesis, we built an operating system with a Scheme interpreter in kernel mode, where the interpreter controls the cache. Generic x86 PC hardware was used, since it allows fine-grained control of cache decisions.Measurements of execution time in this interpreter show that disabling the cache for generations higher than the first does not give any performance gain, but rather a performance loss of up to 50%.We conclude that this interpreter design is not an improvement, but cannot conclude that the hypothesis is false in general. We suggest building a better CPU simulator to gather more data from which to make better caching decisions, moving internal interpreter data structures into the garbage collected heap and modifying the hardware to allow control in the currently rigid dimension of where data is cached---for example separate control of instruction and data caches and separate data caches for different areas of memory..

Läsförståelse hos svenska gymnasieelever : En undersökning av hur gymnasieelever som läst svenska B respektive svenska som andraspråk B klarar TISUS-testets läsförståelsedel

AbstractThis paper aims to examine reading comprehension among Swedish Upper Secondary Schoolstudents who are doing their last school year. My research questions are if the students havesufficient reading comprehension to cope with university studies and higher educationaccording to a comprehension test and if there is a difference between students who studiedSwedish B course or Swedish as a second language B course. Furthermore it involves issuesof differences in results depending on gender and if the second-language students were bornin Sweden or abroad.To get answers to my questions, I let 112 students in my survey carry out the readingcomprehension part of the TISUS test, observed several test sessions, and interviewed 24students who participated in the test. The result shows that most students have difficultieswith the reading comprehension, and probably would find it difficult to study at universitiesor colleges. There are major differences in the results between the Swedish B-students andSwedish as a second language students, but also within these groupings.

Marknadsföring av bibliotek via sociala medier ? Hur ser bibliotekarier på det?

The aim of this thesis is to investigate how librarians view marketing of the library using social media and how this can be used in a marketing strategy. The theoretical framework for this thesis is based on the 7 Ps of the marketing mix, SWOT-analysis and SWOT/TOWS Matrix. The theory is based on planned elements that make up a product or service offered the market. We have used our own interpretation of the theories to analyse our material. Our main method has been a web-based questionnaire, the questionnaire was sent to 523 librarians active at ten large public libraries and its related branches.

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