Sök:

Sökresultat:

1876 Uppsatser om Growth rate - Sida 39 av 126

Biological control of Fusarium wilt on tomatoes : use of Bacillus subtilis and interactions with the earthworm Pontoscolex corethrurus in a Kenyan highland soil

It is important to investigate the potential of biological control measures in agricul-ture, especially where economic issues restrict the use of expensive inputs or when there are environmental concerns about toxicity of agrochemicals. The bacterium Bacillus subtilis has proved promising as a biocontrol agent (BCA) in suppressing various plant diseases and it has also been shown to promote plant growth in certain cases. During this study, the effect of B. subtilis on Fusarium wilt (caused by the fungus Fusarium oxysporum) on tomatoes, as well as its effect on the earthworm species Pontoscolex corethrurus was investigated. Furthermore, the combined ef-fect of the BCA with P.

Inomhusmiljöproblem i fuktiga byggnader : En utredning av åtgärder vid fuktrelaterade inomhusmiljöproblem

Dampness in the indoor environment have been a major issue of discussion the last decades since more and more people complain about their indoor environment. In the present situation there are difficulties to find what causes people?s discomfort in a damp environment even though there is a strong connection between dampness and human health.The aim of the thesis was to contribute to the work done today to achieve a better indoor environment in damp buildings. The purpose of the work was to evaluate whether the measures issued for dampness in the indoor environment contributes to the improvement of health and environment for those who are living or working in that space. Through a literature review, interview and survey the following three questions were answered to achieve the aim and purpose:How are people affected by the indoor environment in damp buildings?Which are the measures issued to prevent dampness in the indoor environment?Do these interventions contribute to a better indoor environment?How people are affected by the indoor environment in damp buildings and how these problems are prevented were the foundation for the continued work with the survey.

Den estetiska kompetensen som bedömningsgrund : En jämförelse mellan privat och offentlig sektor

Since a few years back television has been on a verge of an enormous digital change. Web-TV is now growing at an incredible rate and is said to completely change the way we consume TV. The purpose of this essay is to determine and gain an understanding of how representatives of the broadcast industry looks at the phenomenon of web-TV and especially the different kinds of online video services and how they believe this will affect the television. Methods used are qualitative interviews which we compared with previous studies on the subject and acknowledged communication theories. The respondents were people with good insight and understanding of the media and TV industry.

Hormonell påverkan och receptoruttryck i juvertumörer hos hund

Juvertumörer är de vanligaste tumörerna hos tikar och det finns olika typer av både benigna och maligna juvertumörer. De hormonella fluktuationerna som sker under östralcykeln driver utvecklingen av juvervävnaden och behandling med progestiner (syntetiska ekvivalenter till progesteron) för uppskjutande av löp har kopplats samman med förekomst av juvertumörer, vilket har lett till ett intresse för den hormonella påverkan på juvertumörutvecklingen. Hormonerna är i sin tur beroende av uttrycket av receptorer för att kunna ha effekt i vävnaden. Syftet med den här litteraturstudien är att utreda uttrycket av hormoner och receptorer för progesteron, tillväxthormon (growth hormone, GH) och insulinliknande tillväxtfaktor (insulin-like growth factor, IGF) i normal juvervävnad och i benigna och maligna tumörer, såväl som deras påverkan på juvertumörutvecklingen. De intracellulära signalvägarna för progesteronreceptorer (PR), GH-receptorer (GHR) och IGF-I-receptorn (IGF-IR) är kopplade till cellproliferation och genreglering. De komplexa nätverken av signalvägar interagerar med varandra och en obalans i uttryck och reglering av hormoner, receptorer eller molekyler i cellen kan leda till att tumörer uppstår. Vid progestinbehandling har ökade nivåer av GH och IGF-I uppmätts och högst nivåer sågs i maligna tumörer.

Påverkan på TED- spread under den nuvarande finansiella krisen

The purpose of this essay is to test for significance between TED- spread and four different macrovariables, housing prices, Federal funds rate, Asset Backes Securities and mortgage volume. Multiple regression has been used to search for significance between the dependent and the four independent variables. Our data consist of quarterly reports from January 1998 to June 2008. Our conclusion is that all of the four variables show a significant relation with TED- spread. The model explains 76 percent of the variation in TED- spread..

Effektiva lösningsmetoder för Schrödingerekvationen : En jämförelse

In this paper the rate of convergence, speed of execution and symplectic properties of the time-integrators Leap-Frog (LF2), fourth order Runge-Kutta(RK4) and Crank-Nicholson (CN2) have been studied. This was done by solving the one-dimensional model for a particle in a box (Dirichlet-conditions). The results show that RK4 is the fastest in achieving higher tolerances, while CN2 is the fastest in achieving lower tolerances. Fourth order corrections of LF (LF4)and CN (CN4) were also studied, though these showed no improvements overLF2 and CN2. All methods were shown to exhibit symplectic behavior..

Tillväxthinder i små byggföretag : Och hur dessa kan undvikas genom anpassad styrning

Bakgrund: Idag har det blivit allt viktigare att företag växer, då det skapar förutsättningar att utveckla samhället genom att exempelvis skapa fler nya jobb. I de små företagen finns stor tillväxtpotential och tillväxtvilja, men det är svårt att undkomma olika tillväxthinder och växa lönsamt. Många små företag består av byggföretag och det är vanligt att små byggföretag lyckas växa snabbt, men många av dem går ändå i konkurs. Frågan är hur en anpassad styrning av företagens organisation kan bidra till att underlätta tillväxten och hjälpa företagen att lösa de organisatoriska styrningsproblem som kan uppstå.Syfte: Vårt syfte med studien är att undersöka vilka styrningsproblem som vanligtvis uppstår vid tillväxt av små byggföretag och hur dessa problem påverkar den fortsatta tillväxten, samt ta reda på hur styrningsproblemen kan lösas med en, för branschen, anpassad styrning.Definitioner: Tillväxt betyder vanligtvis att något växer eller ökar i mängd. Tillväxt kan även innebära att något ökar i storlek eller att kvalitén förbättras till följd av en processutveckling.

VD-byten : Hur påverkas ett företags aktiekurs vid ett tillkännagivande av en ny VD?

This essay which is an event study aims to examine if an announcement of a CEO exchange actually is course-affecting information. The essay study?s if a variation can be detected in the share price in relation to an announcement of a CEO exchange. The study also aims to examine if the characteristics; age, number of years at the post, and compensation to the CEO effects the share price progress. The study embraces 46 companies from eight different line of business.

Faktoranalys av EU: s strukturella indikatorer

This paper describes a factor analysis applied at the data of the European Union structural indicators. These are the official indicators for wealth and economic development in the European Union with main use to evaluate the outcomes of the year 2000 Lisbon goals for making the European Union the world?s strongest economy by 2010. The purpose of the data is to serve for comparing and ?learning by doing?-policies, but have, due to size and format, so far been hard to use for a good compare between member countries.

Vad påverkar påverkansprincipen? : En kvantitativ studie om påverkansprincipens förekomst i svenska organisationer

This study puts emphasis on an international discourse describing how cities frequently compete against each other, and also describing factors that cities should enhance to make themselves more competitive. The discourse in this study has therefore been used to seek understanding how three different municipalities Borlänge, Karlstad and Malmö strive for growth by applying central factors from the discourse on the municipalities strategic documents. What the study shows is that the central factors from the discourse strongly imprints the strategic documents, but the presence of the factors varies between the municipalities and also to what meaning that lies behind the strategic goals..

Energieffektivisering av luftningssteget på Käppalaverket, Lidingö

This master thesis in energy optimization was made during the autumn of 2006 at Käppala wastewater treatment plant in Lidingö, Stockholm. A preceding thesis, where all electricity consumption was mapped, showed that the aeration in the biological treatment is the single largest consumer in the plant, and it is therefore of interest to reduce this cost. The oxygen control strategy used at Käppala WWTP is working well from a nutrient removal point of view, but not from an economic one. The last aerobic zones have a very low oxygen consumption during low loading periods which give rise to enhanced dissolved oxygen concentrations with excessive costs and reduced denitrification as a result. But also during periods of normal loading unnecessary high oxygen concentration are sometimes given.By modifying the aeration control strategy three full-scale experiments have been made, with the intention to reduce the air consumption.

Lämplig röjningstidpunkt utifrån björkstubbskottens konkurrens

The purpose of this report was to investigate if there are any correlation between spruce medium height in young spruce stands and the number of birch stump shoots. The purpose was also to investigate if there are any correlation between the spruce height growth after clearing and the mean height of birch stump shoots. The reason for this investigation is that the problem with birch stump shoots after clearing can be expensive if there must be additional clearings before the first thinning. The study provides no apparent association and therefore no special clearance height is recommended. In the final stages of the work there are given some comments on the study´s weaknesses. Finally topics for further research are suggested..

Kriminalitet : En studie om faktorer som orsakar ett kriminellt liv bland unga män

Criminality is a very normal problem that occurs between youths within today?s society. In this study we will be accentuating and therefore be focusing on how young men are living their lives with criminality. In this study we have analyzed the underlying factors for what the causes and reasons are for young men to be part of the criminal life. One basic and underlying factor is families, growth, friendships and economic resources.

Logistisk tillämpning idag : en historisk återblick

In the rate of changes condition of the market in shape of increasing competitiveness situation, local as global, this leads to that logistics has to be developed in the same rate. Logistics has been developed from the military and after the war, logistics was figurative to the companies transport- and store problems. After this, logistics had been divided up into four different time phases (the seventies to the 21:th century). All these time phases have together develop the spectacle and focus of the logistics today. Afterward further developing of the logistics approach to Supply Chain Management (SCM) and afterward SCM, Demand Chain Management (DCM) was developed in aim to secure that the right products were manufactured on the basis of the end customers real requirement and wishes.This paper is taking the aim and problem formulation as a starting point.

Otillräcklighetens diagnoser : Kvinnors upplevelser av att leva med stressrelaterad ohälsa.

This essay discusses the problems with the high rate of long-term sickness leave among women in Sweden. It is based on interviews with six women suffering from stress-related illness. The results show that these women hardly ever recieved an explicit diagnosis and therefore did not feel that their illness was acknowledged. In the abscense of measurable symptoms they were sometimes stigmatisized and accused of simulating their problems. From this position they tried to legitimize their situation by presenting themselves as respectable women.

<- Föregående sida 39 Nästa sida ->