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1038 Uppsatser om Signal species - Sida 61 av 70

Seroprevalence of Japanese encephalitis virus in pigs and dogs in the Mekong Delta

Japanese encephalitis virus (JEV) is one of the leading causes of acute encephalitis in humans. The virus is spread by mosquitoes, mainly belonging to the Culex species. The main reservoirs are considered to be birds and pigs, with pigs constituting the most important reservoir in regard to human infection. During the last few decades the production of pork has increased significantly in Vietnam. With 90% of pigs being kept in households owning 10 pigs or less, pigs are widely spread across most parts of the country.

Interactions between some plant-parasitic nematodes and Rhizoctonia solani in potato fields

The pathogenic fungus Rhizoctonia solani causes major economic losses for potato producers in Sweden. The producers, as well as advisors, have reported possible increases in severity of R. solani when free-living plant parasitic nematodes are present and active. There are several examples in the literature of interactions between pathogens where one, or both species, support or increase the damage made by the other organism. These complexes are important to investigate and to be able to forecast, since even low incidences of fungi or nematodes may result in an interaction of significance.

The black-and-white colobus monkeys (Colobus angolensis palliatus) of Diani forest, Kenya : behavioural responses to habitat fragmentation

The loss of habitat is one of the greatest threats to global biodiversity today. Consequences to a species inhabiting fragmented habitats include: group size changes, altered diets and altered foraging behaviours. In my study I observed Colobus anlgolensis palliatus troops living in the forests of Diani, a highly developed area on the Kenyan coast. I looked for differences in behaviours between three troops inhabiting pristine forest patches and three troops inhabiting highly degraded forest areas. I used focal animal sampling with instantaneous sample points.

Den licensierade vargjaktens betydelse för vargstammen

In October 2009, a new decision was made concerning the administration of predators which resulted in a new wolf policy in Sweden. This meant that the wolf population now should be limited to 210 individuals by harvest. The new policy also recognized that the public acceptance of this species must increase and the genetic status improved. In the 17th of December a decision was taken by the Swedish parliament that it should become legal to hunt wolves in Sweden. The wolf hunt resulted in debate on a large scale amongst people, some thought of it as a good decision while others thought it was wrong.

Privilegierad mobilitet? : Flygplatser, resande och säkerhet

Never before have so many moved so frequently as now. Mobility lies at the centre for the concern ofstates, business and technological development. Some even claim that we are witnessing a mobility turn inthe social sciences. However, as the capacity to move has increased so too has the control and surveillanceof mobility become more extensive. Since September 11, 2001 security has been the defining paradigm fora variety for actors.

Angelägna omvårdnadsaspekter för att skapa känsla av trygghet och säkerhet för patienten i samband med EKG registrering.

En viktig del i sjuksköterskans arbete är patient bemötandet. Patienten befinner sig i ett utsatt läge som i vissa fall är helt främmande för patienten. Ett förtroende till att omvårdnaden är säker och trygg måste kunna byggas upp. Patientens medverkan ger oftast en positiv utveckling av tillfrisknad och känns här viktig för patientens värdighet, integritet och självbestämmande.En av sjuksköterskans många uppgifter är att registrera en patients hjärtfrekvens via ett elektrokardiogram (EKG) på ordination i diagnostiskt syfte. En oro hos patienten, illabefinnande eller en nedsatt förmåga att medverka i EKG registrering kan påverka kvaliteten på ett EKG och kräver ett professionellt bemötande av sjuksköterskan.

Hägn i skogsbruket :

This survey was made during the autumn of 2002 and the beginning of 2003, on commission from the National Board of Forestry. The purpose with the survey was to gather experience and knowledge in the organisation about fencing and this was made through interviews. The ambition was also to get knowledge from people outside the organisation that have great experience of forestry and fencing. The interviews were based on questions that have been composed by the author with help from the supervisors. The questions were the same to both the personal from the National Board of Forestry and to the foresters. Interviews were also made with private landowners, gamekeepers, game researcher, the County Administrative Board, the National Road Administration, pole and net retailers and contractors. The target group for this work is the National Board of Forestry to be forwarded to persons interested in forestry with the ambition to spread knowledge about how to prevent damage on the forest by browsing animals. The deer populations are big in the south of Sweden and growing populations have increased the damage on plantations of broadleaves of the most species.

Adaptiv nivåreglering : Dynamisk expansion av ljudsignaler i en reell arbetsmiljö

Fo?r att implementera en adaptiv niva?reglering av ljudsignaler i en industriell miljo? kra?vs ha?nsyn till ma?nga faktorer info?r en reell implementering. Rapporten avser identifiera dessa faktorer, bedo?ma deras betydelse, samt presentera en grundla?ggande o?versiktlig implementeringsmetod. Fo?rutsa?ttningarna a?r ett verklighetsbaserat scenario, i form av ett nyinstallerat larmsystem i ett kontrollrum pa? ett pappersbruk, da?r ett av huvudma?len a?r att fo?rtydliga ljudande larmsignaler fo?r personalen.Da? fysisk tillga?ng till implementeringsmiljo?n var begra?nsad, samplades ljudmiljo?n sa? att analys av pa?verkande bruska?llors betydelse fo?r niva?regleringen kunde utfo?ras.

Fynd av bakterier och svampar i blododlingar hos vuxna under år 2005 i Gävleborgs län : En epidemiologisk studie

AbstractIntroductionOccurrence of bacteraemia and fungemia is a serious condition with high mortality and the incidence is increasing worldwide. The aim of this study was to survey the occurrence of bacteria and fungi in blood cultures from adult patients domiciled in the county of Gävleborg during one year and also to calculate the incidence and mortality in the same geographical area.MethodThis is a descriptive epidemiologic study, based on all episodes of blood cultures analyzed at the Microbiology laboratory, Gävle hospital during 2005. Patients from 20 years of age, domiciled in the county of Gävleborg at the date of drawing the blood culture, where included in the study. Criteria of exclusion were negative blood cultures and cultures which were classified as contaminants.ResultsAltogether there were 4 564 blood cultures analyzed, resulting in 524 (11 %) positive cultures for further study. There were 442 patients (48 % women) involved in 499 episodes with confirmed bacteraemia or fungemia.

Den skogliga informationens roll i ett kundanpassat virkesflöde : en bakgrundsstudie samt simulering av inventeringsmetoders inverkan på noggrannhet i leveransprognoser till sågverk

This MSc thesis is divided into two parts. The first part deals with the need for information from forest campartments selected for clear cutting, in connection with planning in an integrated forest- and sawmill enterprise. A review of literature is followed by a case stud y, where present conditions in a Swedish forest company are compared with current research in the area. The seeond part consists of a simulation stud y, which aims at camparing the accuracy of inventory estimates using different methods. The estimates are delivery forecasts, covering one month consumptian of timber in a large sawmill.

On the hunt for improvements : possibilities of increasing welfare in captive cheetahs through hunting enrichment

The cheetah (Acinonyx jubatus) is one of the big feline species kept in zoos worldwide. The wild populations are quite small and therefore the captive population make up an important part of the total population of the world. Although life in the wild is not always easy and a captive environment provides shelter and food it does not come without problems. In captivity cheetahs become chronically ill and also develop stereotypic behaviours. Neither of these are problems in wild populations and both can be linked to stress in captivity.

Kompostering av köksavfall och användning av kompost i köksträdgård i Chazuta, Peru : jordförbättring och/eller lösning på ett avfallsproblem?

All over the world the waste from human society is causing problems. In developing countries, large cities are polluted through huge amounts of wastes and people are forced to live very close to open deposits. Lima, capital of Peru, is no exception. The countryside in Peru has also a great challenge to face concerning the waste issue. Children and adults suffer from infectious diseases and contamination of the nature occurs as well. One solution to handle organic waste is to compost, which means a controlled decomposition of organic waste under aerobic conditions at certain temperatures.

Upplevelse i ljus : en studie om ljusets förmåga att skapa rum

De nordligaste delarna av Sverige saknar solljus under tre månader om året. Även mer tätbefolkade områden i söder har långa nätter och korta dagar vintertid. I kombination med ett tufft klimat är detta ett av de huvudsakliga skälen till att människor spenderar mer tid inomhus och mindre utomhus under vintern. Årstidsrelaterad depression och störningar av sömnen är i Sverige relativt vanliga. Artificiellt dagsljus används vid behandling med goda resultat.

Naturhänsyn på certifierade privata skogsfastigheter : en jämförelse i praktiken mellan FSC och PEFC i Sydsverige

Nature conservation on certified small private forest owners- a comparison between the two certification systems FSC and PEFC in southern Sweden Today two different certification systems are used in Sweden to certify forest, FSC (Forest Stewardship Council) and PEFC (Pan European Forest Certification). During the last years certification of forests in general and different certification systems have frequently been debated. FSC is a globally widespread system and about 10 million ha out of 23 million ha Swedish forest is FSC-certified. The FSC-standard is mainly used by major forest companies and to some extent also by smaller private forest owners. PEFC is a European system and about 2 million ha Swedish forests is PEFC-certified today.

Inverkan av nederbörd, temperatur och frost på årsringens egenskaper hos boreal tall (Pinus sylvestris L.) :

The wide distribution range of our boreal pine (Pinus sylvestris L.) provides a great variation in growing conditions and climate/weather factors that influence the wood development of the trees. A great number of extensive studies have been conducted over the years in order to clarify growth trends of this and other species over more or less wide-ranging areas. In this thesis effects of weather factors were instead compared between different forest stands from the about same geographical location. The effects of precipitation, temperature and frost on the year ring characteristics of pine were studied in the research forest of Svartberget Vindeln, in northern Sweden. The stands differed in site index and silvicultural treatment; fertile ? high stem density, fertile ? low stem density, poor ? high stem density and poor ? low stem density.

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