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2180 Uppsatser om Exponential population growth - Sida 35 av 146

Uthållig sanitet : en förstudie i staden Picota, Peru

The access to good sanitary facilities is an important factor that elevates the experienced living standard as it improves hygiene and reduces the transmission of deseases. The ratification of the millennium goals by 189 countries demonstrates that this is an important international issue. Together the countries have taken upon themselves that the proportion of the population that lacked access to sustainable safe drinking water and sanitary facilities in the year 2000 will have been reduced by half by the year 2015. In Peru, the construction of sewage pipe networks to transport the sewage out of the direct human environment is progressing. The safety and sustainability of these systems can be questioned, since in Peru the sewage seldom receive any treatment before being emitted to a recipient. This is taking place in Picota and sorrunding villages as well. In the last 25 years several systems implementing small-scale onsite treatment have been introduced throughout Latin America in an attempt to give more people access to sustainable and safe sanitary facilities, reducing water consumption and taking advantage of the agricultural values of the sewage fractions while protecting the environment from its negative impact. In this study three different sanitary systems and the effects of different population growths were compared.

Introduktion av buskskikt i ungskogar

Young stands in urban forests often lack a shrub layer, though shrubs play an important structural and biological role in forests. All layers interact with one another to form a multilayered stand, in which shrubs have a vital role.In this diploma thesis, theoretical models for forest dynamics are compared with four reference stands to detect factors, and principals for introduction of shrubs in young stands. In these stands four different ways of introduction were found. In one trees and shrubs were planted together at the same time. Shrubs spontaneous spread under a canopy of mature forest, in another.

The role and genetic control of non-coding RNAs in bacterial infection

Promoters are genetic elements that facilitate the transcription of a gene and they have been found in front of non-coding RNA (ncRNA) genes in different organ-isms, e.g. the model plant Arabidopsis thaliana. A similar element, DUSE, has been found in front of ncRNAs in the social amoeba Dictyostelium discoideum and a part of this project has been to analyze the function of this putative promoter element through cloning and expression studies. A construct to analyze the func-tion of DUSE was successfully designed and introduced into D. discoideum but full expression studies were not finished because of shortage of time.

Förklädnad för frihet : En performativitetstudie av Lian Hearns Blossoms and shadows

A large part of the Iranian population resented the west, in particular USA and Great Britain, during the Islamic revolution in Iran 1979. The people were also resenting the adverse effects of the trumped up frame made in Iran. The last shah of Iran, Mohammad Reza Pahlavi was detested by many in Iran for its west-oriented regime. The resentment among many Iranians is a consequence of the violations of e.g. the lack of political and civil rights, there were no existing legal security in the society, there were no economic distribution and the regime of Mohammad Reza Shah violated the human rights.The resolution from an Iranian perspective for riot is not new, during the last centuries the abomination against the despotic kings have been existing varyingly and big riots have been raised.  The Islamic revolution in 1979 was new because the revolution added adverse effects of west, the population detested west and expressed it by protesting through demonstration.  The significance of the revolution in 1979 was also attributable to Islam.

Modellerade och uppmätta kväveflöden i energiskog som bevattnas med avloppsvatten

The aim of this essay was to study the nitrogen flow in two willowplantations, at different locations in the south of Sweden, that wereirrigated with sewage. The study was also performed to compare thedifferences in nitrogen flows between two years, 1998 and 1999. The studywas made in three parts. First, the denitrification activity was measuredusing the acetylen inhibition method. Second the nitrogen flow, as well asthe water- and heat flows, were modeled through the SOIL-SOILN-modelThird; the nitrogen flow was calculated to compare with the results fromthe model.The results from the measurements were then compared with the resultsfrom the SOILN-simulations to detect differences in the denitrificationrate.

Movement patterns of Eurasian lynx (Lynx lynx) around their kills in southern Sweden

During the last ten- fifteen years the Eurasian lynx (Lynx lynx) population in southern Sweden has increased considerably. This area has a high density of both people and roads and have a higher roe deer (main prey of lynx) density than the rest of the country. Movement patterns such as how long animals utilize their kills and how far they travel from their kills between revisits is unknown for lynx in southern Sweden. The aim of this study was to examine how different factors affected the time lynx used their kills and the distances they travelled from the kill between revisits. The data was prepared and calculated using ArcGIS and the study is based on 98 ungulate kills and 12 lynx individuals.

Seroprevalence of Rift Valley fever in domestic sheep and goats of Gaza province, Mozambique

Animal welfare is of increasing concern in present society. In commercial pig farming, animal welfare problems are common. One of the causes for these problems is the barren environment in which pigs are housed, which can cause oral manipulation of pen mates. Providing straw might be one solution to this problem. Another solution could be reached through genetic selection.

Hur anpassar sig Gyps-gamar (Gyps rueppellii och G. africanus) i Östafrika till oregelbunden och osäker födotillgång?

In East Africa live two species of Griffon Vultures; Rüppel?s Griffon Vulture (Gyps rueppellii) and African White-backed Griffon Vulture (G. africanus). One of the apparently most important factors limiting the population of these birds is food supply. Griffon vultures nest for eight months of the year, and are during this period geographically tied down to the nesting place.

Svenska preferensaktier: Ett eget kapital- eller skuldinstrument?

On Nasdaq OMX Nordic Stockholm there has been a large increase in issues of preferred stocks since the financial crisis 2008. Aiming to explain whether preferred stocks have most of their characteristics relating to debt or equity, we answer four sub questions. Do all preferred stocks share the same features, or do they differ from each other? Our population is similar in characteristics, except for the preferred stock of Swedbank which is convertible and deviates when it comes to participation in dividends - instead of convertible the others are limited and redeemable. Further, the second sub question treats preferred stock in relation to the common stock quantitatively, in market data.

The influence of forestry stands treatments on brown bears (Ursus arctos) habitat selection in Sweden ? an option for Alberta forestry?

The brown bear population in Alberta, Canada has been decreasing, while the Swedish has been increasing and all the affecting parameters are not known. This study examined the difference in these populations to see if an explanation could be found in differences between the forest management. The aim of the paper was to see if stand treatments had an influence of brown bears habitat selection in autumn in Sweden and how the results can be used in Alberta. This was done by analyzing bear positions in Sweden with forest data, and comparing forest management data for the study area in Sweden with forest management data for Alberta. The results displayed that mature forests over 60 years that have been commercially thinned are selected by bears rather than forests over 60 years that have not been commercially thinned in.

IKEAs etablering i Haparanda : Planerade och förväntade effekter för regionen Haparanda-Torneå

The aim with my research is to illuminate the meaning of IKEAs settle in Haparanda, for the region Haparanda-Tornio, its economic growth and its inhabitants. The research has been carried out only through qualitative methods. Some interviews with a range of people from varying companies have been conducted.Haparanda is a smaller Swedish city situated in the north, on the border to Finland and to a city called Tornio. These two cities, Haparanda and Tornio, has realised they are stronger in pairs, so they initiated cooperation across the border. Haparanda-Tornio is not a region of historically welfare and well-being.

Undernäring hos äldre personer med fokus på könsskillnader- En kvantitativ studie

Introduction: Malnutrition leads to loss of health and coexists with disease and loss of function. A good nutritional status becomes more important the older you get to maintain a good health. Studies show that it is important to identify and prevent malnutrition in its early stages. Men and women recieve different medical treatment in a number of different medical diseases. There are few studies in nursing from av gender perspective.Aim: The aim of this study is to examine the prevalence of malnutrition in the elderly in Västra Götaland with focus on gender differences when it comes to prevalence and nursing interventionsMethod: A register study with av quantitative approach is conducted to answer the aim.

Identitet, skog, fjäll och ren i Härjedalen : ur ett samiskt perspektiv

This paper examines how nature is understood in the province of Ha?rjedalen by the sami population of the area, through interviews with three informers and photographs taken by the author. Pictures and answers point in the direction that much of nature is understood through the reindeer, the most important key symbol of the reindeer herding part of the sami people and their kin..

Water balance and nitrate leaching from arable land in a changed climate : a model study

This thesis aims to present the essential background on how to perform climate changeimpact assessments, and to present the results from a climate impact assessment on waterbalance and nitrate leaching for an arable Swedish soil. The soil is a sandy soil in southwesternSweden, grown with spring cereals. This study is meant to be a benchmark example,and cannot be seen as a regional or national assessment for Sweden, rather as an approachto present and analyze the most important parts of these kinds of assessments.A dynamical simulation model (COUP, Jansson and Karlberg, 2004) was used for thisstudy. The model was parameterized and calibrated against data from an experimental site,located in Mellby in Hallands county, south western Sweden. Measurements were carriedout between 1st of April 1988 and 1st of April 1991.

Prevalensskillnad av katarakt mellan män och kvinnor i en synhjälpsökande population i Guatemala

Syftet med studien var att med hjälp av direkt oftalmoskopi undersöka om det finns någon skillnad i prevalens av katarakt mellan män och kvinnor i en population i Guatemala som sökt synhjälp. Metod: Studien genomfördes på patienter som sökt synhjälp via organisation Vision For All i Guatemala. Synskärpa och bästa korrektion utvärderades med hjälp av Snellen E-hake tavla på fem meter och provbåge och provglas. Både höger och vänster öga undersöktes med direkt oftalmoskopi på 30 cm avstånd ca 20 grader temporalt. Undersökningen utfördes odilaterat och graderades efter Mehra och Minassians studie från 1988. Totalt deltog 181 patienter varav 108 var kvinnor och 73 var män.

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