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653 Uppsatser om Chemical composition - Sida 2 av 44
Implementeringen av REACH : Fallstudie på ett SME-företag
The importance of chemical use is enormous for areas such as agriculture, industry and medicine and hence a prerequisite for our modern society. In order to protect humans and the environment from the negative effects of chemical use, chemical regulations have been used at a relatively early stage in our history. The purpose of REACH, the new chemical regulation of the European Union, is to generate new knowledge of chemicals within the European market and to increase the responsibilities of the enterprises when it comes to risk management. Whether the enterprises will implement the regulations or not will be of vital importance for the realization of the law?s intentions.The purpose of this study was to identify possibilities and problems that can occur when a downstream-user SME is about to implement REACH.
Chemical and sensory analyses of juice, cider and vinegar produced from different apple cultivars
The interest for locally produced food is increasing due to consumer concern about the environment, distrust of industrial foods and a demand for high quality products. Apple is the predominant fruit crop in Sweden, and by processing apples into cider and vinegar, these products could significantly contribute to the development of the market of local foods.In this study different yeast types and different bacterial cultures were evaluated for their suitability in cider and vinegar production from cloudy apple juice. Ten apple cultivars (Aroma, Baldwin, Belle de Boskoop, Bramley, Cortland, Gravensteiner, Ingrid-Marie, Jonathan, Rubinola and Spartan) were also evaluated for their suitability for production of juice, cider and vinegar. Chemical analyses including total soluble solids, titratable acidity and total phenols were performed on the products along with sensorial evaluation by taste panels.The yeast strains were shown to have an effect on fermentation rate and the resulting content of total phenols in ciders fermented from cloudy apple juice. Dry commercial starter strains gave a higher appreciated cider compared to cider that was spontaneously fermented, and the ale yeast Safale S-04 was concluded to be the most suited for fermentation of cloudy apple juice.For vinegar production, the bacterial culture had an effect on TSS, but not on any other chemical or taste characteristics.
Karaktärisering av avfallsbränslen
All products will eventually end up as waste, which in a sustainable society has to be handled in an efficient and environment friendly way. This report focuses on waste fractions meant for combustion, often difficult to characterize. However, more homogeneous fractions that are treated biologically are also discussed.The study concerns the region of Borås, Sweden, where the waste plant Sobacken has provided a good starting point. On this site, fuel to the Energy-from-Waste plant of Borås Energi is prepared and the biological waste is treated through anaerobic digestion.One important part of the study has been to collect experience-based knowledge from the technical staff at Sobacken and Borås Energi. This information was compiled into an overview of wanted and unwanted fractions to the preparation plant and the boilers respectively.
Framtagning av analysmetodik för uppslutning av kemiska produkter
The purpose of this thesis was to develop and optimize a method of analysis for combustion of organic chemical products, followed by an ion chromatographic quantitative analysis. This was to be achieved with the decomposition equipment IKA AOD 1. The aim was to receive a precise and repeatable method that would be able to be applied to the process of qualification and technical marking of chemical products at the company, OKG AB in Oskarshamn. A complete instruction for the decomposition equipment and the method of analysis was written. A number of parameters were chosen from the general method of the combustion equipment, which then was tested parallel with a simultaneous development of an appropriate ion chromatographic method.
Implementeringen av REACH : ett led i att bidra till en hållbar utveckling : Fallstudie på ett SME-företag
The importance of chemical use is enormous for areas such as agriculture, industry and medicine and hence a prerequisite for our modern society. In order to protect humans and the environment from the negative effects of chemical use, chemical regulations have been used at a relatively early stage in our history. The purpose of REACH, the new chemical regulation of the European Union, is to generate new knowledge of chemicals within the European market and to increase the responsibilities of the enterprises when it comes to risk management. Whether the enterprises will implement the regulations or not will be of vital importance for the realization of the law?s intentions.The purpose of this study was to identify possibilities and problems that can occur when a downstream-user SME is about to implement REACH.
Inre sökande
This research explains and describes the role music notations may play in an unconventional way. The aim of this research is to show that by balancing composition, interpretation and improvisation, the performer(s) could produce or open the door to a reservoir of new sounds, which could emerge through a composer?s awareness of the need to balance these elements. That act of balancing depends on the musician?s interpretation through their interaction with the music notation, with their action process on the instrument and each other.
Förslag till modell av kemikaliespridning i mark anpassad för användning vid räddningsinsats - Kemspill Mark 4.0
After emergencies involving chemical spills it is of great importance that correct measures are taken with short notice, both for the security of people and in order to minimize future environmental consequences. The RIB-unit at the Swedish Rescue Services Agency initiated this study, the aim of which is to propose changes to the existing chemical transport calculation tool: Chemical Spill 3.4, included in RIB - Integrated Decision Support for Civil Protection, so that it can be used for decision support as well as in preventive work. A rough estimation of chemical transport in the subsurface is considered being of great importance when making decisions during emergency response operations.The proposition presented in this report is a non site specific chemical transport model which is designed to give a rough estimation of NAPL flow in homogenous isotropic soil shortly after an instantaneous release. The model can be used at two levels; both in situations without access to information on subsurface properties, and with more accuracy in situations with knowledge of the included parameters. For that reason the user can choose among predefined alternatives or assign the parameters a numeric value to increase the quality of the model output.
Övervakning vid allmän anestesi och stående ingrepp på häst
The purpose of this literature study was to describe techniques for monitoring general anesthesia and standing chemical restraint in the horse. A number of various techniques and devices related to e.g. blood pressure measurement, blood gas analysis and pulse oximetry are defined, and finally their clinical relevance and reliability are discussed.
The equine patient is generally far more exposed to anesthesia-related risks than other smaller species. Complications such as hypotension and hypercapnia are commonly seen during general anesthesia. Thus, close monitoring is essentially performed by the veterinary nurse, whom is responsible for monitoring the anesthetized patient.
Skatten i toppen? : -En studie om styrelse- & ledningsgruppssammansättningens påverkan på företagets skatteplanering
Introduction: Taxes result in a big cost for corporations which create an incentive for tax planning. Previous studies have demonstrated that it's the management team and the board of directors that influences to what extent the corporation is going to tax plan. We want to study underlying factors for how the composition of the groups affect the tax planning in a corporation based on four demographic traits; sex, nationality, age and duration.Purpose: The purpose with the study is to explain how the composition of the management team and the board of directors affect the corporations tax planning.Method: The study has a deductive approach where theories about the composition of the board of directors and the management team have been used to derive hypothesis. The empirical material has been collected from Nasdaq OMX Stockholm. Two different measures have been used to calculate the corporations tax planning.Results and Conclusions: The result of the study demonstrates that the composition of both the board of directors and the management team has an effect on corporations tax planning.
Styrelsen och samhällsansvaret - En studie om hur styrelsesammansättningen påverkar CSR-prestation i svenska börsbolag
The composition of the board of directors and Corporate Social Responsibility (CSR) are two widely researched subject and discussed by the media. This study aims to examine the impact of the board of directors' composition on CSR performance among the largest companies listed on Nasdaq OMX stock exchange 2008 in Stockholm, Sweden. A linear regression analysis is applied to investigate the relationship and evidence is found that board attributes have an effect on CSR performance. Among these; the size of the board, outside directors and employee representatives all have a positive impact on environmental performance. Furthermore; female, outside directors and employee representatives have a positive impact on social performance.
Interpretation och dissonansbehandling på kromatisk nyckelharpa
By describing and analyzing a self made composition for the Swedish folk music instrument ?nyckelharpa? with emphasis on playing techique, dissonance treatment and interpretation questions are reflected upon regarding how dissonances and andvanced harmonical progressions are treated on a limited instrument such as ?nyckelharpa?. By emphasizing the traditional norm connected to the interpretation and instrumentation of traditional Swedish folk music (a traditon in which the nyckelharpa is included) and comparing the te- chniques connected to it with the recent composed material in a western classical context the possibilities and limitations in composition and interpretation are further investigated. Thus the musical experience and the documentation of the process of composing a concert for nyckelharpa provides a knowledge base for reflective analysis upon questions regarding interpretation, composition and dissonance treatment. This thesis also provides a brief summary of traditional playing and bowing technique as well as a short historical description of the Swedish traditional instrument ?nyckelharpa?..
Utfasning av farliga kemikalier - Vid Banverket och Vägverket
Large quantities of chemicals are used in all areas of society. The chemicals can be toxic and dangerous for the environment if used incorrectly. To protect people and the environment from dangerous chemicals, a good control of them and an active work to phase out hazardous substances in all areas where chemicals are present, are needed. Banverket and Vägverket handle in production a wide range of chemical products. Many of the products are dangerous to the environment, for those who work with them and to others who may come into contact with them.
Kan man se med öronen? : En uppsats om filmljud
This thesis is about the interaction between composition, notation and interpretation and what occurs between the fields with an extended notation.The purpose of my thesis is to examine the possibilities tothoroughly describe and map the sounding samples through composition prototypes.The thesis has a qualitative approach, and the empirical material consists of different documents about notation and from interviews with musicians and students about the instruments used in the thesis.It also consists of 17 compositions recorded at Örebro University School of Music as an appendix.The analysis shows that the context in which the symbols are found, play an important role in performing them. It also shows that the performers are rooted in a traditional way of performing..
I gränslandet mellan not och ton : - notbilden i nykomponerad musik
This thesis is about the interaction between composition, notation and interpretation and what occurs between the fields with an extended notation.The purpose of my thesis is to examine the possibilities tothoroughly describe and map the sounding samples through composition prototypes.The thesis has a qualitative approach, and the empirical material consists of different documents about notation and from interviews with musicians and students about the instruments used in the thesis.It also consists of 17 compositions recorded at Örebro University School of Music as an appendix.The analysis shows that the context in which the symbols are found, play an important role in performing them. It also shows that the performers are rooted in a traditional way of performing..
Åkertistel : biologi och icke-kemisk bekämpning
A growing problem in Swedish herbicide free agriculture, the Canadian thistle has been the object of several new trials, seeking methods for non-chemical weed control. The new trials have mainly confirmed earlier experiences; that the most successful methods of control are springtime ploughing, repeated cutting and competition from a stout crop. Row hoeing has also been proven effective. As opposed to earlier recommendations, half season fallow has shown to be a risky and often ineffective method of control. Trials regarding biological methods have shown that above others thistle rust (Puccinia punctiformis) may have the potential of controlling Canadian thistle the future.
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