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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Möjligheter och hinder för att utöka omfattningen av RoHS-direktivet / Expanding the Scope of the RoHS Directive : Prospects and Obstacles

Segerkvist, Stina January 2005 (has links)
<p>The RoHS Directive was introduced in order to restrict hazardous substances in Electrical and Electronic Equipment, EEE. It currently restricts the use of six hazardous substances/compounds; cadmium, lead, mercury, hexavalent chromium, PBB, and PBDE. The RoHS Directive currently includes category 1-7 and 10 in the categories of EEE listed in Annex 1A to the WEEE-Directive (Waste of EEE). The aim with the report is to investigate and elucidate prospects and obstacles to increase the scope of RoHS. This report mainly considers the inclusion of product categories 8 (Medical Devices) and 9 (Monitoring and Control Instruments). </p><p>In order to fulfil the aim eight questions were formulated, that shall be answered in the report. In order to find the knowledge of and attitude towards RoHS of manufacturers, retailers, and importers of products falling under category 8 and 9, a questionnaire was sent to 80 companies, of which 25 answered. The answers showed that many of the companies did not know of RoHS before the questionnaire was sent out. The majority did not consider that their product category needed a longer time period to find alternatives for the applications where any of the in RoHS restricted substances were used, compared with the other categories in annex 1A to WEEE. Of the companies that answered on the questionnaire the majority had less than 50 employees. The companies in the study had limited knowledge of the contents of their products, they bought the function rather than the contents. </p><p>One important conclusion in this report is that only a few of the companies in category 8 and 9 are likely to keep using non compliant components for a long time if they use standard electronic equipment irrespective if they intend to readjust their production according to the RoHS Directive or not. The reason is that most subcontractors will be forced by the customers, mainly the larger ones, to readjust their production. They certainly will not keep two production lines. A paradox problem that can arise for small and medium sized companies, the majority of those answering the questionnaire were, is to get access to compliant components before the RoHS Directive is put into force. These companies order such small batches that it is unrealistic to order them from the original manufacturer, who usually is located in Asia. The small and medium sized companies usually buy their components from middlemen/grossists in Europe and Sweden. These grossist in many cases have large stocks with non-compliant components that they want to sell out before RoHS Directive is put into force from the 1st July 2006. </p><p>The RoHS Directive has been critized for restricting lead, but different studies show that the alternatives to e.g. Lead gives only slightly worse results, which by way of introduction can be expected from a new technology compared with an old, more investigated. The work with the report has also revealed a lack in communication and cooperation not only between the different stakeholders in electronic industry: retailers, importers, manufacturers and subcontractors, but also between industry, customers and authorities. The RoHS Directive may improve the communication and cooperation between these different actors.</p>
2

Möjligheter och hinder för att utöka omfattningen av RoHS-direktivet / Expanding the Scope of the RoHS Directive : Prospects and Obstacles

Segerkvist, Stina January 2005 (has links)
The RoHS Directive was introduced in order to restrict hazardous substances in Electrical and Electronic Equipment, EEE. It currently restricts the use of six hazardous substances/compounds; cadmium, lead, mercury, hexavalent chromium, PBB, and PBDE. The RoHS Directive currently includes category 1-7 and 10 in the categories of EEE listed in Annex 1A to the WEEE-Directive (Waste of EEE). The aim with the report is to investigate and elucidate prospects and obstacles to increase the scope of RoHS. This report mainly considers the inclusion of product categories 8 (Medical Devices) and 9 (Monitoring and Control Instruments). In order to fulfil the aim eight questions were formulated, that shall be answered in the report. In order to find the knowledge of and attitude towards RoHS of manufacturers, retailers, and importers of products falling under category 8 and 9, a questionnaire was sent to 80 companies, of which 25 answered. The answers showed that many of the companies did not know of RoHS before the questionnaire was sent out. The majority did not consider that their product category needed a longer time period to find alternatives for the applications where any of the in RoHS restricted substances were used, compared with the other categories in annex 1A to WEEE. Of the companies that answered on the questionnaire the majority had less than 50 employees. The companies in the study had limited knowledge of the contents of their products, they bought the function rather than the contents. One important conclusion in this report is that only a few of the companies in category 8 and 9 are likely to keep using non compliant components for a long time if they use standard electronic equipment irrespective if they intend to readjust their production according to the RoHS Directive or not. The reason is that most subcontractors will be forced by the customers, mainly the larger ones, to readjust their production. They certainly will not keep two production lines. A paradox problem that can arise for small and medium sized companies, the majority of those answering the questionnaire were, is to get access to compliant components before the RoHS Directive is put into force. These companies order such small batches that it is unrealistic to order them from the original manufacturer, who usually is located in Asia. The small and medium sized companies usually buy their components from middlemen/grossists in Europe and Sweden. These grossist in many cases have large stocks with non-compliant components that they want to sell out before RoHS Directive is put into force from the 1st July 2006. The RoHS Directive has been critized for restricting lead, but different studies show that the alternatives to e.g. Lead gives only slightly worse results, which by way of introduction can be expected from a new technology compared with an old, more investigated. The work with the report has also revealed a lack in communication and cooperation not only between the different stakeholders in electronic industry: retailers, importers, manufacturers and subcontractors, but also between industry, customers and authorities. The RoHS Directive may improve the communication and cooperation between these different actors.
3

Potencialidades do uso da espectrometria de raios-x aliada a quimioterapia na analise das substancias restritas pela diretiva europeia 2002/95/EC - RoHS / Potentialities of x-ray spectrometry combined to chemometrics to analyze the restricted substances by European Directive 2002/95/EC - RoHS

Oliveira, Lidiane de, 1982- 15 August 2008 (has links)
Orientador: Maria Izabel Maretti Silveira Bueno / Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Quimica / Made available in DSpace on 2018-08-11T20:33:52Z (GMT). No. of bitstreams: 1 Oliveira_Lidianede_M.pdf: 4129293 bytes, checksum: dfd187be78cdfad4de2c7f489eff5300 (MD5) Previous issue date: 2008 / Resumo: Esse trabalho representa uma inovação na área de química analítica, abordando novas potencialidades da técnica de fluorescência de raios-X e utilizando o espalhamento da radiação como medida analítica e a quimiometria para tratamento dos dados. As potencialidades dessa técnica para análise das substâncias restritas pela Diretiva Européia 2002/95/EC ¿ RoHS foram avaliadas a partir de estudos realizados com um equipamento de EDXRF, equipado com um tubo de ródio como fonte de raios-X. As amostras analisadas eram soluções contendo cinco diferentes elementos (cádmio, chumbo, mercúrio, bromo e cromo). Além de adequado, o método proposto mostrou-se bastante rápido, simples e eficaz, bem como não destrutivo e de baixo custo, com grande potencial de substituir de forma eficiente as três técnicas analíticas usadas tradicionalmente. Os modelos de calibração apresentaram bons coeficientes de regressão (> 0,99), baixos valores de erros de previsão para amostras externas (< 15%, exceto para especiação de cromo) e limites de detecção e quantificação abaixo dos limites de controle definidos pela norma. Com esse mesmo método também foi possível a especiação direta de cromo utilizando um aparelho de raios-X convencional, fato inédito na literatura científica. Nesse caso os modelos de calibração também apresentaram bons coeficientes de regressão (> 0,97) e baixos valores de erros de previsão para amostras externas (< 10%) / Abstract: This work represents an innovation in analytical chemistry, dealing with new potentialities of X-ray fluorescence technique and using X-ray scattering effects and chemometrics for processing the data. The potential of this technique to analyze the restricted substances by European Directive RoHS/2002/95/EC were evaluated from studies with an EDXRF equipment, fitted with a rhodium tube as an X-ray source. The samples evaluated were solutions containing five different elements (cadmium, lead, mercury, bromine and chromium). Besides appropriate, the proposed method proved to be very fast, simple and effective, as well as not destructive and of low cost, with great potential to efficiently replace the three analytical techniques used traditionally. The calibration models present high values of regression coefficients (> 0,99), low values of prediction errors for external samples (< 15%, except for speciation of chromium) and limits of detection and quantification below the RoHS control limits. With this same method, it was possible the direct speciation of chromium using a conventional X-ray apparatus, an unprecedented fact in the scientific literature. In this case, the calibration models also present high values of regression coefficients (> 0,97) and low values of prediction errors for external samples (< 10%) / Mestrado / Quimica Analitica / Mestre em Química
4

Hållbarhetskravens påverkan på små och medelstora företag : En studie om hur dagens hållbarhetskrav påverkar små och medelstora företag inom belysnings tillverkningsbranschen i Sverige

Olander, Amanda, Olsson, Filip January 2024 (has links)
In the public and political spheres, sustainability and Environmental, Social and Governance (ESG) have become an even more essential topic of conversation, as expressed through consumer behavior but also through more demands from policy makers. Changing consumption patterns and increasing sustainability requirements are in turn forcing businesses to adapt, something the vast majority of companies have also adopted in one way or another to demonstrate to their customers that they are sustainable. It is now more important than ever to integrate sustainability into their business and act according to a Circular Business Model (CBM). The UN Global Goals, Goal 9: Sustainable Industry, Innovation and Infrastructure (Agenda 2030, Goal 9), the Ecodesign Directive, the Restriction of Hazardous Substances Directive (RoHS Directive) and CSRD, are some requirements that act as tools to promote the circular economy and become particularly relevant for the lighting manufacturing industry which is the focus of the study. Meeting all sustainability requirements may be a greater challenge for Small and medium-sized enterprises (SMEs) that do not have the same resources as larger companies, the study therefore examines how small and medium-sized enterprises are affected by the sustainability requirements, as they constitute 99.9% of all companies in Sweden. Through qualitative methods, the study examines how rules, laws and values in society linked to sustainability affect SMEs. The study aims to identify through qualitative interviews and surveys what obstacles and challenges SMEs experience with today's sustainability requirements. Through an analysis supported by legitimacy theory and stakeholder theory, the study focuses on business development linked to sustainability. It also provides tools for policy makers to, for example, provide financial resources or offer tax breaks to give SMEs more opportunities and fewer obstacles to be ecologically sustainable. The report also highlights opportunities that may be important for SMEs to be aware of during their transition to a CBM. / I de allmänna och politiska rummen har hållbarhet och Environmental, Social and Governance (ESG) blivit ett än mer väsentligt samtalsämne. vilket uttrycks genom konsumenternas beteende men även genom fler krav från beslutsfattare. Förändrade konsumtionsmönster och allt fler hållbarhetskrav leder i sin tur till att företagen blir tvungna att anpassa sig, något de allra flesta företag också har anammat på ett eller annat sätt för att visa för sina kunder att de är hållbara. Det är nu viktigare än någonsin att integrera hållbarhet i sin verksamhet och agera efter en Circular Business Model (CBM). FNs globala mål, Mål 9: Hållbar industri, innovationer och infrastruktur (Agenda 2030, mål 9), Ekodesigndirektivet, Restriction of Hazardous Substances Directive (RoHS-direktivet) och Corporate Sustainability Reporting Directive, CSRD-rapportering, är några krav som agerar verktyg för att främja cirkulär ekonomi och blir särskilt relevanta för belysnings tillverkningsbranschen som är studiens fokus. Att möta alla hållbarhetskrav kan tänkas vara en större utmaning för Small and medium-sized enterprises (SMEs) som inte har samma resurser som större företag, studien undersöker därför att hur små och medelstora företag påverkas av hållbarhetskraven, då de utgör 99.9% av alla företag i Sverige. Genom kvalitativa metoder undersöks hur regler, lagar och värderingar i samhället kopplat till hållbarhet påverkar SMEs. Studien syftar till att genom kvalitativa intervjuer och enkäter identifiera vilka hinder och utmaningar SMEs upplever med dagens hållbarhetskrav. Genom en analys med stöd av legitimitetsteorin och intressentteorin fokuserar studien på affärsutveckling kopplat till hållbarhet. Den ger också verktyg till makthavare för att exempelvis kunna tillföra ekonomiska medel eller erbjuda skattelättnader för att ge SMEs fler möjligheter och färre hinder att vara ekologiskt hållbara. Rapporten belyser även möjligheter som kan vara viktiga för SMEs kännedom under deras övergång till en CBM.

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