Genom ökad användning på träningskläder har antibakteriella behandlingar blivit allt vanligare för den allmänna konsumenten. Dessa plagg marknadsförs ofta som antibakte-riella eller luktfria, men det som inte framgår är vilka ämnen som används för att uppnå den luktfria effekten. Vanligt förekommande är de behandlingar som är baserade på oorganiska silversalter. Medan leverantörerna av dessa produkter argumenterar för, argumenterar många miljövetare och forskare på bakterier emot antibakteriella produk-ter då dessa kan ha en skadlig inverkan på vår miljö och hälsa. Rapporten syftar till att ge större kunskap kring miljö- och hälsopåverkan vid användandet av textiler behandlade med silversalter samt till att analysera konsumenters inställning till antibakteriella kläder samt deras användar- och tvättvanor för träningskläder.

Jag har alltid fascinerats av kaffekannan i silver, hur tydlig den är i sin form och hur den bär på en tradition inom användandet såväl som utförandet. Det finns en tyst överenskommelse hur en kaffekanna ser ut och hur vi betraktar föremål med en tydlig funktion.Ur silversmedens synvinkel fungerar kaffekannan nästan som en ikon. Detta är något som håller på att försvinna i och med att kaffekannan i silver inte används på samma sätt i dag som den gjorde förr..

Proliferative enteropathy (PE) caused by Lawsonia intracellularis has been reported in horses in the USA, Canada, Australia and Great Britain. Diarrhoea caused by Brachyspira antigen-containing spirochaetes has been diagnosed in a horse in Japan. The presence of Lawsonia intracellularis or Brachyspira spp. have neither been investigated in healthy nor in sick horses in Sweden. The purpose of this study was to survey the occurrence of the two bacteria in Swedish horses. Faecal samples were gathered from 108 foals without any clinical signs of illness in the age of four to eight months.

Legionella can be prevented, the question is how. This report is a degree in construction engineering education at Chalmers University in Gothenburg. A comprehensive written publication for Legionella-safe plumbing installations is not available and therefore requested. The purpose of this report is to present preventative measures against Legionella bacteria growth in tap water and in other systems where Legionella bacteria are a potential problem. Technical solutions are presented including how different systems function and what their advantages and disadvantages are.

In the country of Jordan, egg production is very important economically, but several bacte-ria are involved in food borne diseases transmitted from eggs or other poultry products. The most important are Salmonella spp., Campylobacter jejuni and Escherichia coli. In Jordan two different housing systems are used for hens in large scale egg production; con-ventional cages and litter floor systems. Eggs from four different farms were analysed and compared to see if a difference could be found regarding the presence of pathogenic bacte-ria on the egg surfaces between these two systems. Total number of aerobic bacteria was analysed, the presence of Salmonella spp., C.

In the country of Jordan, egg production is very important economically, but several bacte-ria are involved in food borne diseases transmitted from eggs or other poultry products. The most important are Salmonella spp., Campylobacter jejuni and Escherichia coli. In Jordan two different housing systems are used for hens in large scale egg production; con-ventional cages and litter floor systems. Eggs from four different farms were analysed and compared to see if a difference could be found regarding the presence of pathogenic bacte-ria on the egg surfaces between these two systems. Total number of aerobic bacteria was analysed, the presence of Salmonella spp., C.

Den här rapporten beskriver malmbildande processer och Bergslagens malmgeologi. En beskrivning av malmmikroskopet ges tillsammans med identifikationskriterier för de mineral som påträffats i en mikroskopisk studie som gjorts på fyra stuffer från Dammen nära Dannemora, inkluderande vanliga och påträffade malmtexturer. Två av proverna analyserades med mikrosond..

Avloppsslam är en restprodukt som skapas vid rening av avloppsvatten och består mest av organiskt material. Slammet är mycket näringsrikt men innehåller ofta höga halter av olika föroreningar som tungmetaller, läkemedelsrester etc. Stockholm Vatten AB är certifierade enligt REVAQ för att kunna använda avloppsslam som gödningsmedel på åkermarker. För att slammet fortsättningsvis ska genomgå certifiering måste föroreningshalterna minska. Silver är en av de metaller som avskiljs från avloppsvattnet till slammet och har en hög ackumuleringshastighet i mark.

The aim of this study is to elucidate factors that effect growth of Sarcina lutea and Bacillus subtilis, exposed to the growth inhibitor SDS (Sodiumdodecylsulfat). Agar diffusion experiments revealed repeated, concentric zones of inhibition and stimulation upon exposure to Sodiumdodecylsulphate or to Amoxicillin. Temperature, nutrient concentration and inhibitor concentration were controlled. Formation of successively repeated zones of inhibition, stimulation, inhibition and stimulation is discussed: ? The extension of the primary inhibition zone is due to the concentration of applied Sodium dodecyl sulphate.? Immediately outside the primary inhibition zone the bacteria have access to diffusing nutrients that have not been consumed in the primary inhabitation zone.? In zones of dense bacterial growth the bacteria may produce inhibiting substances, affecting growth of bacteria in adjacent zones.? In zones of dense bacterial growth the nutrients will soon become depleted, thus affecting bacteria in adjacent zones..

The search for antibiotic compounds from the natural environment has been going on for seven decades, ever since penicillin entered the market and antibiotic treatments became routine. The evolutionary pressure put on the pathogenic microorganisms induced a rapid spreading of naturally occurring resistance genes, leaving only the option of finding new antibiotics to treat the resistant pathogens. Microorganisms have been extensively mined for their biosynthetic abilities to produce biologically active compounds. To date, more than 23 000 microbial natural products have been discovered. The Actinomycetales are ubiquitous bacteria that have been used for antibiotic discovery for more than half a century, and over 10 000 natural products have been identified from the order.

Bacteria are exposed to evolutionary pressure to an extent unlike other organisms. This leads to a high degree of adaptation to its surrounding. This thesis investigates the degree of adaptation towards higher accuracy in the transcription of DNA to RNA in coding sequences in the DNA of the E. coli bacteria. Two coding sequences with different nucleotide contents were investigated.

Många företag använder Twitter i sin marknadskommunikation, men misslyckas. Uppsatsen syftar till att belysa ett e-handelsföretag, Sportamore, i Sverige som använder plattformen i dess fulla potential och därmed skapar vänskapsrelationer. Uppsatsen baseras på en dialogisk analys av tweets till och från e-handelsbolaget under åren 2010, 2012, 2014. Det är en kvalitativ studie med ett hermeneutiskt perspektiv. Resultatet visar hur ett företag med hjälp av dialog kan skapa mervärde och relationer på Twitter.

Pyometra is a common and life threatening disease of intact bitches. The disease is caused by a hormonal influence on the uterus in combination with a bacterial infection. The most common treatment is ovariohysterectomy, but several medical options are available to maintain fertility or avoid surgery and anaesthesia. Drugs that can be used for medical treatment are for example progesterone-receptor antagonists, prostaglandins and dopamine agonist. The present study focused on treatment with the progesterone-receptor antagonistaglepristone in combination with antimicrobial therapy.

Background: Mastitis in dairy cattle is a common ailment worldwide. A cause of mastitis can be bacteria such as Escherichia coli. Mastitis is not a deadly ailment and sometimes the dairy cows show no symptoms but if certain virulence genes are present in the bacteria that cause the mastitis, the bacteria can be transmitted to humans and cause severe diseases. The potential presence of enterohemorrhagic Escherichia coli (EHEC) in particular would be a major concern for human health.Aim: The aim for this study was to analyze the presence of virulence genes known to be present in E.coli strains isolated from dairy cows with mastitis in Sweden.Method: A Qiagen BIO ROBOT EZ1 was used to purify DNA from 90 bacterial cultures. A panel of virulence genes were amplified and biotinylated from the purified DNA by PCR and an E.coli based DNA microarray was used to detect presumed virulence genes in E.coli.Result: There were no samples that had all the genes traditionally used to classify E.coli as EHEC or potential EHEC.

A comparative thesis to study precious metals impact on a portfolio, during a long period of time, from the fourth quarter of 1986 to the third quarter of 2012. Five different portfolios are compared; three of the portfolios containing one of the following precious metals, gold, silver and platinum, the fourth portfolio contain all precious metals and shares, and the fifth portfolio containing only shares which is represented of OMXS30. This is done to determine the portfolio that generates the most return in relation to the least risk with the help of historical prices. Sharpe ratio is used to measure the profitability of precious metals by measuring the yield relative to the total risk. The study also measures precious metals correlation with shares..