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637 Uppsatser om Multiple Streams - Sida 2 av 43

Spawning site selection of brown trout in habitat restored streams

During the timber floating era, most of Sweden?s watercourses were altered. This decreased the amount of available spawning habitats for salmonids, and hence had a negative effect on the riverine brown trout (Salmo trutta) populations. Reconstruction of spawning grounds is today a common measure in restoration of altered streams in Sweden. However, very little evaluation of the effectiveness of these reconstructed spawning grounds exists.

Den bäcknära zonen vid små skogliga vattendrag i Värmland : generell beskrivning, förekomst av traktorspår samt kvicksilverhalter i körpåverkat ytvatten

Forest streams and the associated riparian zones are sensitive to disturbances and changes that occur within these riparian areas. Particularly sensitive are small streams of low order, which will have large impacts down-stream. The disturbances that occur in the riparian zones are reflected quickly in the stream. Driving with forestry machines in the riparian zone will have detrimental effects to the soil and water. Driving the machines will lead to changes in the mineral soil composition, resulting in the reduction of porosity, less infiltration, compaction, and an increased bulk density.

Vattendragsrestaurering i teorin och fiskinventering i praktiken : en litteratur respektive metodstudie

Running water-pathways have played an important roll in Sweden and frequently been manipulated. One profound change was made during the period of logging when streams were cleared from obstacles as big boulders, sharp bends and side-streams. Dams and different constructions gave control of the stream water and the streams became channel-like with a homogen structure. This interference gave problems for many fish populations and resulted in a shortage of feeding habitat, over-wintering habitat, spawning habitat, unnatural flow regimes, sedimentation, unnatural temperature fluctuations. Many of these historical changes of the watersheds are now subjects for restoration, ie., bring back the streams to what we believed it was before the change. However, what once existed in terms of complexity is now gone and difficult toreplace.

Faktorer som kan påverka livskvaliteten hos personer med diagnosen multipel skleros. En litteraturstudie.

Multiple sclerosis is a disease whose course is capricious and unprediactable and the exact cause of the disease is still unclear. The purpose of this literature review was to describe factors that can effect quality of life of people with diagnosis multiple sclerosis. The results shows ten different factors that effect quality of life of people with MS: fatigue, activities in daily life, position of dependence, limits of the functional abilities, sense of guilt and shame, comunicationdifficulty, social network, emootional factors, depression and degree of difficulty of the symtomes. Work has been shown to bee a major factor that can make people with MS feel worthy and experience quality of life. Nurs is an important keystone in care of people with diagnosis multiple sclerosis..

Sjuksköterskans omvårdnad av patienter med myelomatos och associerad kronisk smärta : en litteraturstudie

Background: Multiple myeloma is a malignant incurable cancer disease associated with severe chronic pain. The nurse has several important roles in the management of patients with multiple myeloma. This study focuses on nurse´s roles including the caring of pain relief.Aim: The aim of this study was to elucidate the nurse?s role in giving care to patients with multiple myeloma and associated chronic pain.Method: This literature study was based on scientific articles.Results: The nurse is in a key position to facilitate ongoing adequate pain and psychosocial assessment of patients with multiple myeloma. The study presents ways of relieving pain and suffering via different ways of caring management.

Ansvar och engagemang - En studie av policyutvecklingen efter införandet av den svenska nationella strategin mot hotet från terrorism

I denna studie har policyutvecklingen av den svenska terrorismbekämpningen undersökts. Utvecklingen av den svenska kontraterrorpolicy sedan den nationella strategins introduktion, har ägt rum under en period när allmänheten och det politiska styret inte tillskrivit problemområdet samma betydelse. Medan allmänhetens oro ökat, har det politiska intresset kommit och gått. Med en fallstudiedesign har utvecklingen från 2008 års nationella strategi fram tills idag studerats och analyserats. Genom en kvalitativ textanalys har utvecklingen visat sig ha två trender.

Konduktivitet i vattendrag som indikator på sura sulfatjordar

Increasing attention is being given to acid sulphate soils wherever they occur. The problems that leaching sulphate soils gives with significant lowerings of pH and mobilization of heavy metals influence large spectra of our society from fisheries to agriculture to construction. Mapping these soils is consequently of great importance and the methods of doing this is very much lacking in function and precision. This study was therefore carried out to investigate whether conductivity in running water can be used as a simple instrument to identify acid sulphate soils in the catchment. 31 coastal streams in the county of Västerbotten were analyzed for different catchment properties such as occurence of marine sediments and basic water chemistry including conductivity and sulphate.

Vattenvård vid slutavverkning : före och efter vattenvårdsutbildning på Stora Enso Skog, distrikt Siljan

In 2006, Stora Enso Skog implemented an education program in water management for harvester operators, timber purchasers, cut block planners and supervisors. The focus of the program was creating stream crossings with minimal harm to the stream and the surrounding riparian area. This main purpose of this study was to determine the difference in work procedures before and after participating in the program. The methodology consisted of field studies and interviews with harvester operators and their supervisors. The field study looked at how the streams had been crossed concerning the number of crossings, visible damage to the stream and/or the riparian area made by the machines. Biological parameters such as the width and dept of the stream and amount of large woody debris in the stream were also measured. The field result from 30 harvesting sites showed no significant difference between sites that had been harvested before or after the education program. But the harvester operators and their supervisors experienced an increased concern for watersheds after the educational program.

Vandring av vårlekande fisk och jämförelse av fångst mellan ryssja och strömöversiktsnät i Hammerstaån, Stockholms län

During the last two hundred years many wetlands and streams in Sweden have been lowered to provide land for agriculture and forestry. Some of the coastal wetlands and streams probably served as spawning sites for certain species of fish in the Baltic Sea, but the present situation is not well known. As standardized methods to monitor fish in running waters are carried out during late summer or autumn, there is a need for methods to sample spring-spawning fish in these streams.The aim of this study was to survey the lower kilometer stretch of Hammerstaån in Stockholm, to investigate the extent to which the stream is used by spring-spawning fish. Furthermore, the study aims to evaluate a new type of survey fishing gill net called strömöversiktsnät (SÖN). This was done by comparing the catch of fish by SÖN with that of fyke nets.

Användargenererad livestreaming, nätgemenskaper & social interaktion : En kvalitativ undersökning gällande interaktion mellan tittare och streamare på plattformen Twitch

The popularity of video games has been boosted by the rise of user-generated live streaming platforms, and the biggest of them all is Twitch. The popularity depends on Twitch alignment of live streamed video games. The stream is created by a player who broadcast and streams the video game online. The video game can then be watched by a viewer that is interested in the video game. In every stream there is an implemented live chat that allows the viewer to interact with the streamer while the stream is online.

Implementering av 1D-DCT

IDCT (Inverse Discrete Cosine Transform) is a common algorithm being used with image and sound decompression. The algorithm is a Fourier related transform which can occur in many different types like, one-dimensional, two-dimensional, three-dimensional and many more.The goal with this thesis is to create a fast and low effect version of two-dimensional IDCT algorithm, where techniques as multiple-constant multiplication and subexpression sharing plus bit-serial and bit-parallel arithmetic are used.The result is a hardware implementation with power consumption at 19,56 mW..

Vandring av vårlekande fisk och jämförelse av fångst mellan ryssja och strömöversiktsnät i Hammerstaån, Stockholms län

During the last two hundred years many wetlands and streams in Sweden have been lowered to provide land for agriculture and forestry. Some of the coastal wetlands and streams probably served as spawning sites for certain species of fish in the Baltic Sea, but the present situation is not well known. As standardized methods to monitor fish in running waters are carried out during late summer or autumn, there is a need for methods to sample spring-spawning fish in these streams.The aim of this study was to survey the lower kilometer stretch of Hammerstaån in Stockholm, to investigate the extent to which the stream is used by spring-spawning fish. Furthermore, the study aims to evaluate a new type of survey fishing gill net calledströmöversiktsnät (SÖN). This was done by comparing the catch of fish by SÖN with that of fyke nets.

Provisionsbaserad lön och prisskillnader mellan kanaler ? en källa till kanalkonflikter? : En fallstudie bland företag i Sundsvall

Today?s companies offer their products and services through multiple distribution channels in an increasing extent, in order to reach bigger markets and more customers. Multiple channels result in an increased risk for channel conflict.This essay is an exploratory and descriptive study with the purpose to explore some companies? channel conflicts on the basis of sales commission and price differences. A case study has been made at two different companies and the empirical material has been collected with qualitative interviews.We found more channel conflicts in the company that uses sales commissions than in the company that doesn?t.

En utvärdering av temperaturproblem samt närsaltsbelastning i odlingsdammarna och Flugströmmen i Harasjömåla

This bachelor?s project deals with both the problems of high water temperatures in fishponds at a fish-breeding station and of the nutrient load to nearby lakes and streams in Harasjömåla, Blekinge, Sweden. Theory, methods and results of the analyses are presented in the report..

Flottledsåterställning i norra Sverige: : effekter på habitatkvalitet och populationstätheter av juvenil öringar (Salmo trutta L.)

In an effort to evaluate the effects of restorations of float ways on population density of stream dwelling fish in relation to the changes in habitat, I studied the physical habitat restored and channalized sites and their population density of brown trout (Salmo trutta L.) in three streams in the municipality of Sorsele. The differences between the channalized and the restored sites where most noticeable regarding substrate which where generally coarser in the restored sites. The analyses showed that the proportion of habitat that where suitable to the age class 0+ where significantly lower in the restored sites compared to the channalized sites. Regarding age class ?2+, no statistical differences in habitat quality were found.

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