Sökresultat:
551 Uppsatser om Mechanical rock excavation - Sida 3 av 37
Inventering och bedömning av förorenade områden inom division Energi, Tekniska Verken i Linköping
This thesis was commissioned by Tekniska verken, Energy Division with the overall aim to investigate the concept of environmental debt and what it means for a business. Furthermore, a sustainable risk and responsibility investigation shall be carried out on the concerned areas. Finally, the priority areas shall be highlighted and proposed actions presented. The Swedish Environmental debt concept was presented in 1992 by Arne Jarnelöv. Environmental debt is defined as restoration costs for environmental damage. In the early days the concept did not take into account who was responsible, but the environmental debts was regarded as a humanity debt to future generations.
Sjuksköterskors kommunikation med patienter som vårdas i respirator : Nurses? communication with patients during mechanical ventilation
Aim: The aim of this study was to describe intensive care nurses? experiences communicating with patients during mechanical ventilation.Methods/design: A qualitative interview study. Interviews where analyzed using descriptive content analysisSetting: Nine intensive care nurses from two different intensive care units were interviewed using a semi structured interview guide.Background: Past research has shown that patients during mechanical ventilation in the intensive care unit, feel very vulnerable and the helplessness of being unable to speak. These patients feels that they are completely dependent on the nurses and their competence. It has been shown to be very important that the patient feels included, acknowledged and respected.Results: The analyzed data resulted in a theme; through communication strive to preserve patients´ dignity and three main categories; create relationship to the patient, minimize patients´ vulnerability and don´t give up.
Statistisk behandlig av driftsdata : Ur Garpenberggruvans driftcentral
Boliden Mineral Ab's mine in Garpenberg, Dalarna is going through a massiveexpansion. The annual ore production is being increased from 1,4 million tons to 2,5million tons in less than two years period of time. Along this expansion thedepartment of mining techniques is administrating a project of optimizing the shortterm planning for the mining production. Garpenberg have since mid 90s storedinformation from all mining processes in a database.The information consists of time data from all the different activities required in themining process, for example charging, blasting, loading etc. The database also containstime data of delays that are affecting the production.
Geokemisk undersökning vid Rävlidmyrgruvan, Västerbottens län : provtagning, analys och förslag till åtgärder
The mining industry, in terms of ore excavation and metal production, is and has been
important to the Swedish economy. In connection with the ore excavation process, large
amounts of partly sulphidic waste are produced. When the metal sulphides are exposed to air and water they are eventually oxidised, which leads to the formation of acidic water with high concentrations of metal cations and sulphate ions, so called Acid Mine Drainage
(AMD). This water may reach the nearest surroundings and cause negative environmental
effects. By covering the waste with soil or water, the oxidation process can be minimised.
At the Rävlidmyran mine in the county of Västerbotten open pit mining took place between
1951 and 1991.
Kommunikation hos respiratorvårdade patienter : Upplevelser hos patient och vårdpersonal samt analys av samtal med och utan röstgenerator
?Studies have shown that patients receiving mechanical ventilation in an intensive care unit (ICU), who are entirely dependent on the nursing staff, often experience frustration due to a temporary loss of the voice source. Limited communication is an important factor contributing to patient discomfort. Nursing staff also report communication as frustrating and difficult.The aim of the present study is to introduce a neck-type electrolarynx as a communication aid in an ICU, to study the nursing staff experiences of communication with tracheotomized patients receiving mechanical ventilation, and to examine the patient´s experiences regarding communicative abilities. Communication between a ventilator treated, tracheotomized patient and members of the nursing staff was recorded and analyzed according to principles of Conversation Analysis (CA).The results show that several members of the nursing staff experience difficulties communicating with tracheotomized patients receiving mechanical ventilation.
Rockstjärnor har inga tuttar : En innehållsanalys om genusrepresentationen i musikmagasinet MOJO
The purpose of this study is to give an insight in how music press is presented gender wise. The focus area lies in rock music and the study is made on British music magazine MOJO in the year of 2010. The study contains quantitative analyses showing how much room men are given compared to women. The study is also supplemented with image analyses of four covers spread out over the year. The main question is formulated as in, how much room do women get in music magazine MOJO 2010 and what output does this have on rock music?s gender characteristics? The main results show, amongst other things that 79% of all the articles are written with focus on one or more male musicians.
Sweden rock festival : Om varför vi ständigt återkommer
Syftet med studien var att få mer kunskap om vilka motiv människor har till att ständigt återkomma till Sweden Rock Festival och vilka upplevelser under festivalen som attraherar dem. Frågeställningarna var: Varför väljer man att återkomma år efter år till samma festival, och vilka upplevelser under festivalen är attraherande?Till grund för empirin, ligger en kvalitativ studie med intervjuer av sju ständigt återkommande besökare till Sweden Rock Festival. Analysen grundar sig på socialpsykologiska teorier om mänskliga möten av Goffman och psykologiska teorier om motiv. Dessa är bl a; Cromptons teorier om push och pull faktorer och Manells och Isa-Aholas escapeseeking modell.Resultatet visar att informanterna väljer att återkomma för att uppleva sådant de saknar i sina liv till vardags.
Undersökning av Mekaniska Problem med hjälp av Datoralgebra
When investigating mechanical problems it is often more convenient to deal with scalars rather than vectors. In this project methods stemming from the field of analytical mechanics, which lets one derive the equations of motion using scalar quantities instead of vectors, have been used. Two mechanical problems were investigated, a double pendulum with a spring and particles orbit in a sphere. The equations of motion of the two systems were derived with the assistance of computer algebra, using Maple and the external package Sophia. The systems were investigated with regard to periodicity and conserved quantities..
Kemisk stabilisering av gruvavfall från Ljusnarsbergsfältet med mesakalk och avloppsslam
Mine waste from Ljusnarsbergsfältet in Kopparberg, Sweden, is considered to constitute a great risk for human health and the surrounding environment. Some of the waste rock consists of sulphide minerals. When sulphide minerals come into contact with dissolved oxygen and precipitation, oxidation may occur resulting in acid mine drainage (AMD) and the release of heavy metals. The purpose of this study has been to characterise the waste material and try to chemically stabilize the waste rock with a mixture of sewage sludge and calcium carbonate. The drawback of using organic matter is the risk that dissolved organic matter can act as a complexing agent for heavy metals and in this way increase their mobility.
Upplevelseproduktion i praktiken: en studie av gästers upplevelse vid eventet Rock'n roll Piteå
Syftet med uppsatsen är att presentera utvalda teoretiska modeller i litteratur inom Upplevelseproduktion, samt att genom en produktion testa huruvida dessa teorier är relevanta. Syftet är även att undersöka karaktären hos gästens eventuella upplevelse vid produktionen för att avgöra om de teoretiska modellerna även gjort upplevelsen meningsfull för gästen. Med ett hermeneutiskt förhållningssätt och en deduktiv ansats har vi med hjälp av ett antal teoretiska modeller först planerat och sedan genomfört en reell produktion vid namn Rock n? roll Piteå och med det som grund gjort en kvalitativ intervjustudie baserad på tre fokusgrupper. Endast individen kan avgöra om en upplevelse varit meningsfull, då detta är subjektivt, men med stöd i det resultat fokusgruppintervjuerna visat kan vi konstatera att det för en stor del av informanterna varit en meningsfull upplevelse.
Sjöundersökning av Naalojärvi
LKAB is an international high tech mineral corporation and a world leading manufacturer of refined ironore products for steal manufacturing and other mineral products destined other industries. LKAB is an international corporation with companies world wide, with it?s main location in the north of Sweden, which is where the iron ore mines and the refining works are located. LKAB?s iron refining process in Vitåfors, Malmberget, is a source of great amounts of waste-rock.
Magkänsla mot matematik : Kan mekanisk rekrytering förhindra diskriminering?
The aim of this study was to investigate if a mechanical recruitment process could be a useful tool for employers to avoid discrimination. National and international law protect jobseekers from discrimination during the recruiting process. Despite this individuals frequently report that they are treated unfairly when they apply for a job. In line with this research shows that some individuals do not have the same opportunities in the labour market as the rest of the population. This study focus on discrimination based on ethnicity, age, gender or disability.Today most of the hiring decisions are based on employers professional judgement.
Avancerad hjärt-lungräddning med mekaniska eller manuella kompressioner : Uppfattningar hos ambulanspersonal om kompetens, övning, patientrisk och överlevnad
Study objectives:Examine ambulance personnel?s perceptions of skills / training and knowledge with regards to the existing mechanical / manual compressions and frequency of training during a work shift. Do ambulance personnel think that mechanical compressions increase survival? Are there concerns that the device could damage the patient?Design: A cross-sectional study, quantitative approach with qualitative elements was conducted.Methods:Questionnaire form, which was answered by 44 ambulance personnel in an ambulance organisation in Sweden. Participants were on a scale of 1-5 to select how they agree with the claims of the study form and also submit their own comments.
Tillförlitlighet hos information som hanteras av flera användare och genom flera system
When investigating mechanical problems it is often more convenient to deal with scalars rather than vectors. In this project methods stemming from the field of analytical mechanics, which lets one derive the equations of motion using scalar quantities instead of vectors, have been used. Two mechanical problems were investigated, a double pendulum with a spring and particles orbit in a sphere. The equations of motion of the two systems were derived with the assistance of computer algebra, using Maple and the external package Sophia. The systems were investigated with regard to periodicity and conserved quantities..
Vibrationsproblem i närliggande konstruktioner i samband med markarbete
Ground work like blasting, piling and excavation has always had a great influence during the planning phase of a construction project since it can cause damages on adjacent buildings and have severe economic consequences. This thesis deals with how vibrations caused by ground work influence near-by buildings and what methods geotechnicians and construction entrepreneurs use to handle these risks.The purpose of this thesis is to explain risk management in relation to ground work. In order to achieve this I have used a qualitative method by interviewing a geotechnician and a ground work contractor who possess knowledge and experience useful to this thesis. The result shows that vibrations from ground work spread through the ground as seismic waves that cause displacements and packing in the ground visible in adjacent buildings as cracks and subsidence damages. Geotechnicians study ground work vibrations by means of ground investigations and experience from previous projects in order to produce a risk analysis that entrepreneurs can use to reduce damages.