Zahlreiche Studien belegen schädigende Assoziationen zwischen Atemwegserkrankungen und gasförmigen und partikulären Luftschadstoffen. Feinstaub erwies sich als besonders schädigend. Es ist jedoch noch nicht geklärt, welche Partikelfraktionen des Feinstaubes für die Zusammenhänge verantwortlich sind. In dieser Arbeit werden die Kurzzeit-Effekte von grobem Feinstaub (TSP) sowie den gasförmigen Schadstoffen Schwefeldioxid (SO2) und Stickstoffdioxid (NO2) auf Krankenhauseinweisungen aufgrund von Atemwegserkrankungen in Drobeta, Rumänien untersucht. Zudem wird der Zusammenhang von PM10 (Partikel mit einem Durchmesser < 10 µm), NO2, SO2 und größenabhängigen Partikelanzahlkonzentrationen (PNC) mit respiratorischen Notfallaufnahmen und Sterbefällen in Peking, China, analysiert. Für Peking wird zudem ein statistisches Modell entwickelt, um fehlende PNC zu modellieren. Ziel der Arbeit ist es, die relevanten Faktoren in den Beziehungen zwischen Atemwegserkrankungen und Luftverschmutzung, vor allem Feinstaub, zu untersuchen. In beiden Städten wurde ein schädigender Einfluss von Luftschadstoffen auf Atemwegserkrankungen festgestellt. In Drobeta waren TSP und SO2 mit Atemwegserkrankungen assoziiert, wobei der schädigende Einfluss von TSP durch trockene Luft verstärkt wurde. In Peking zeigten vor allem Akkumulationspartikel (Durchmesser 0.1 – 1 µm) eine schädigende Wirkung, welche für ultrafeine Partikel (UFP, < 100 nm) nicht festgestellt werden konnte. Dabei war der Einfluss von PNC unabhängig von PM10. Der Effekt von PNC war für stagnierende Luftmassen größer, was darauf hinweist, dass neben der Partikelanzahl und -oberfläche die Partikelchemie einen negativen Einfluss hat. Darüber hinaus wurde eine Assoziation von NO2 mit Notfallaufnahmen und von SO2 mit der Mortalität festgestellt. Die Ergebnisse bestätigen den schädigenden Einfluss von gasförmigen sowie partikulären Luftschadstoffen auf Atemwegserkrankungen und weisen auf größenabhängige Effekte von Feinstaub hin. / Numerous epidemiological studies have described adverse effects of particulate and gaseous air pollution on respiratory health. Especially particulate matter (PM) seems to be relevant for the observed associations. However, it is not yet clear which particle fractions are responsible for the observed health effects of PM. In the presented studies, we analyse the short-term associations of total suspended particles (TSP) as well as of sulphur dioxide (SO2) and nitrogen dioxide (NO2) with respiratory hospital admissions in Drobeta, Romania. Moreover, effects of PM10 (PM with a diameter < 10 µm), NO2, SO2, and size-segregated particle number concentrations (PNC) on respiratory mortality and emergency room visits (ERV) are investigated for Beijing, China. For Beijing, we also develop a statistical model to impute missing PNC. The aim of the studies is to investigate the factors influencing the short term associations between respiratory health and air pollution, especially PM. Air pollution was adversely associated with respiratory health in Drobeta and Beijing. In Drobeta, TSP and SO2 were adversely associated with hospital admissions for chronic bronchitis; thereby, dry air aggravated the adverse associations of TSP. In Beijing, mostly accumulation mode particles (0.1 – 1 µm) showed adverse associations with respiratory health, whereas, there was a lack thereof for ultrafine particles (UFP). The effects of PNC were found to be independent of PM10. Adverse health effects of PNC were stronger for stagnant air masses indicating that, besides particle number and surface area, also particle chemistry influences the observed associations, as stagnant air masses result in chemically diverse particles. Also, NO2 was adversely associated with respiratory ERV and SO2 with respiratory mortality. These findings underline the strong influence of gaseous and particulate air pollution on respiratory health and indicate size dependent effects of particulate matter.

The elderly population is sensitive to damages caused by air pollution on health. They spend relatively more time indoors, however there is limited information on the air quality they breathe inside their residences. The objectives of this work are to characterise mass of sizesegregated particulate matter (PM) in elderly residences in Metropolitan Area of Sao Paulo (MASP) in Brazil; assess the meteorological parameters influence; evaluate the indoor and outdoor relationship of PM; quantify the ions, trace elements and black carbon (rBC) in quasi-ultrafine particles (qUFP) and identify their sources, and estimate the respiratory deposition doses (RDD). To achieve these objectives, we measured during 24 hours the mass concentrations of PM in differents sizes (102.5, 2.51.0, 1.00.5, 0.50.25 and <0.25 µm (PM0.25, qUFP) in 59 elderly residences in MASP using a Personal Cascade Impactor Sampler. The PM10 is the sum of all size and PM2.5 is PM10 less PM102.5. The PM2.5 and PM0.25 contributed 78% and 38% of total PM10, respectively. About 77% and 40% of the residences had higher PM2.5 and PM10 than those in outdoor environments. About 13 and 43% of the measurements exceeded the World Health Organization (WHO) guidelines for PM10 and PM2.5, respectively. The PM0.25 exceeded the WHO guideline for PM2.5 in 8.3% of residences. Residences with higher PM concentration in all size bins are predominantly near the heavy traffic areas during the nonprecipitation days. About 68% of residences have the highest mass concentration in PM0.25. We analysed ions by chromatography, trace elements by x-ray fluorescence and rBC by reflectance. The major of ions concentrations in qUFP were found to be SO42- and NH4+, and the major trace elements were Si and Fe. Around 26% of the qUFP is rBC. Some residences have a high concentration of the toxic heavy metals Cu, Ni, Pb and Cr. We identified 6 dominant sources of the indoor qUFP by positive matrix factorization: vehicular emission (57%), secondary inorganic aerosol (21%), soil and construction (7%), wall painting (7%), cooking (5%) and industry (3%). The RDD for coarse and fine particles were found to be 20% and 24.6% higher for male than female elderly during seated position, respectively. The maximum RDD of qUFP and rBC are in the tracheobronchial part. It is important the control of PM sources in the elderly residences to limit adverse health effects of PM, especially fine particles. We suggest consider the rBC as one regulated air pollutant in terms of public control actions for air quality improvement in MASP. / A população idosa é sensível aos riscos da poluição do ar à saúde. Os idosos passam mais tempo dentro de suas casas, mas há pouca informação sobre a qualidade do ar dentro de suas residências. Os objetivos deste trabalho são caracterizar a massa do material particulado (PM) de diferentes tamanhos em residências de idosos na Região Metropolitana de São Paulo (RMSP) no Brasil; avaliar a influência dos parâmetros meteorológicos e a relação entre PM de ambiente interno e externo; quantificar os íons, elementos traços e black carbon (rBC) em partículas quasi-ultrafinas (qUFP) e identificar suas fontes, e estimar as doses de deposição de PM no trato respiratório (RDD). Para alcançar esses objetivos, medimos durante 24 horas as concentrações em massa de PM nos tamanhos 10-2,5; 2,5-1,0; 1,0-0,5; 0,5-0,25 e <0,25 m (PM0.25, qUFP) em 59 residências de idosos na RMSP usando o Personal Cascade Impactor Sampler. O PM10 é a soma da massa em todos os tamanhos e PM2.5 é o PM10 menos o PM10-2.5. O PM2.5 e PM0.25 contribuíram com 78% e 38% do total de PM10, respectivamente. Cerca de 77% e 40% das residências apresentaram maior concentração de PM2.5 e PM10 do que aqueles em ambientes externos. Cerca de 13 e 43% das medidas excederam as diretrizes da Organização Mundial de Saúde (OMS) para PM10 e PM2.5, respectivamente. O PM0.25 excedeu o limiar da OMS para PM2.5 em 8.3% das residências. As residências com maior concentração de PM em todos os tamanhos estão próximas das áreas de intenso tráfego veicular e não houve precipitação durante a medição. Cerca de 68% das residências têm a maior concentração de massa em PM0.25. Analisamos os íons por cromatografia, elementos traços por fluorescência de raios-x e rBC por reflectância. A maior concentração de íons em qUFP foi SO42- e NH4+, e os principais elementos traços foram Si e Fe. Cerca de 26% do qUFP é rBC. Algumas residências têm uma alta concentração dos metais pesados tóxicos Cu, Ni, Pb e Cr. Identificou-se 6 fontes de qUFP por fatoração de matriz positiva: emissão de veículos (57%), aerossol inorgânico secundário (21%), solo e construção (7%), pintura de parede (7%), cozimento (5%) e indústria (3%). O RDD para PM10-2.5 e PM2.5 foi 20% e 24,6% maior para homens do que mulheres enquanto sentados, respectivamente. O RDD máximo de qUFP e rBC foi na parte traqueobrônquica. É importante o controle de fontes de PM nas residências de idosos para limitar os efeitos adversos à saúde, especialmente partículas finas. Sugerimos considerar o rBC como um poluente atmosférico regulado em termos de ações de controle público para a melhoria da qualidade do ar na RMSP.

The purpose of this master thesis is to address two main ways of dealing with used textile material in Czech Republic. It compares textile material as a component of a household waste with textile material as a component of a segregated waste. The main question that the thesis and the research done within it addresses is whether the costs, associated with textile waste management coming as the result of administrative tools and legislative action plans mounted to it, are not too high. Based on a calculated model of cost structure of both above mentioned variants their comparison could be performed. Analysis of its results pointed out, that under certain given conditions and assumptions the system of segregated waste collection is, despite its higher costs, effective. The outcome of this master thesis is proposed possible scenarios used to optimize textile waste management in the context of economic science methodology, available data and primary research questions.

This research was designed to fabricate and characterize novel polyhedral phase segregated microstructures of polystyrene (PS)-matrix composites filled with multi-walled carbon nanotubes (MWNT) and indium tin oxide (ITO) nanopowders. PS-composites were compression molded with MWNT and ITO separately first. The resulting composites were conducting, and remained optically transparent. Mixtures of MWNT and ITO were then used to form mixed ITO/MWNT PS-composites in order to optimize their transparency and conductivity. This was achieved by fabricating composites with varying concentrations of fillers. Impedance spectroscopy was used to characterize the electrical properties of the PS-composites. Optical properties were characterized by measuring the transmission of light through the PS-composite in the visible light spectrum using a spectrophotometer. The electrical properties and microstructural attributes of the fillers used were also characterized. The main objective of the project was to understand the relationships between the structural, electrical, and optical properties of the PS-composites. The resistivity of PS-composites filled with MWNT ranged from 105 to 1013 Ω cm for samples with 0.007 to 0.9 vol% MWNT. The resistivity of PS-composites filled with ITO ranged from 107 to 1013 Ω cm for PS-composites with 0.034 to 0.86 vol% ITO. PS/ITO composites had a percolation threshold of 0.15, 0.25, or 0.3 phr ITO, depending on the type of ITO used in the composite. The percolation threshold of PS/MWNT composites was found to be 0.01 phr MWNT. Mixed ITO/MWNT PS-composites were already percolated, the concentrations investigated in xv ii this study were already above the percolation threshold of these composites. A time dependence on impedance was found for PS-composites filled with MWNT. As time increases there is a decrease in impedance, and in some cases also a dependence on voltage. All PS-composites showed a dependence on the microstructure of the PS matrix and the filler material. The resistivity and percolation threshold were lower for PS/MWNT composites than PS/ITO composites due to the difference in filler size and aspect ratio, since MWNT have a smaller size. The orientation of PS grains with respect to neighboring grains was found to affect the resistivity of PS/MWNT. PS/MWNT composites with preferentially oriented PS grains were found to have a lower resistivity. Mixed ITO/MWNT PS-composites with the right filler concentrations were able to maintain transmission while decreasing resistivity. The fracture surface of fractured PS-composites prepared in this work indicated that there was bonding between adjacent PS-grains. From this work, it can be concluded that large grain hybrid ITO/MWNT PS-composites provide insight into the effect of combining nanometer sized filler materials together in a polymer matrix on the resultant structural, electrical, and optical properties of the composite. In the future, it is recommended that this study be used to aid research in flexible transparent conducting electrodes using a polymer matrix and hybrid/mixed nanometer sized conducting fillers.

Denna studie grundar sig i en forskning gällande arbetet kring genus och jämställdhet i två olika yrkesbranscher inom samma organisation. Den svenska arbetsmarknaden är könssegregerad och granskas arbetsmarknaden närmare framträder den interna könssegregeringen. Det betyder att kvinnor och män med samma yrke och ibland samma arbetsgivare utför olika arbetsuppgifter. Enligt tidigare forskning har kvinnors andel av arbetskraften ökat kraftigt sedan 1960 och detta har medfört att ett stort steg tagits mot ökad jämställdhet. Kvinnor och män har valt olika yrkesinriktningar som resulterat i en könssegregerad arbetsmarknad. En bidragande orsak till att den svenska arbetsmarknaden fortfarande är starkt könssegregerad är beskrivningen av yrken och branscher såsom "typiskt kvinnliga" och "typiskt manliga". Utgångspunkten för denna studie är att ta fram mer forskning kring genus och jämställdhet. Syftet med studien är således att undersöka två olika yrkesbranscher som uppvisar kvinnodominans respektive mansdominans inom en och samma organisation. Tidigare forskning påvisar att olikheter i traditioner, förhållningssätt samt värderingar som är relaterade till genusmönstret bidrar till att kvinnor dominerar i hemtjänsten och män i de tekniska verksamheterna. Dessa genusmönster har stor betydelse för arbetsmiljöförhållandena eftersom det påverkar alla delar av vårt samhälle. Studien har genomförts med kvalitativa intervjuer sett ur ett hermeneutiskt perspektiv. Intervjuer har genomförts med personer med olika befattningar från räddningstjänsten, vård och omsorg (hemtjänst) samt personalchef. Resultaten från intervjuerna har analyserats utifrån den teoretiska referensramen. I denna studie har vi kommit fram till att den mansdominerade yrkesbranschen har kommit längre i arbetet för jämställdhet genom exempelvis lön och ombyggnationer till kvinnliga omklädningsrum. Samt att vissa av brandmännens partners är emot kvinnliga brandmän. / This study is based on research into the work of gender and equality in two different professions within the same organization. The Swedish labor market is gender segregated and is the labor market to be examined closer stands the internal gender segregation. This means that women and men with the same occupation and sometimes the same employer perform different tasks. According to previous research, women's share of labor has increased significantly since 1960, and this has led to a major step towards increased gender equality. Women and men have chosen different professions that resulted in a gender segregated labor market. A contributory reason why the Swedish labor market is still highly gender segregated is the description of professions and industries such as "typically female" and "typically male". The starting point for this study is to develop more research on the importance of the Swedish gender-based labor market. The purpose of the study is thus to investigate two different professions that exhibit women dominance and men dominance within one and the same organization. Previous research shows that differences in traditions, attitudes and values are related to gender patterns. This makes women dominate the home care services and men in the technical activities. These gender patterns are of great importance to the working environment, as it affects all parts of our society. The study has been conducted with qualitative interviews from a hermeneutic perspective. Interviews have been conducted with people with different positions from the emergency services, health and social care (home care service), and the staff manager. The study has been analyzed with qualitative interviews from a hermeneutic perspective. Interviews have been conducted with people with different positions from the emergency services, healthcare and home care services and the responsible human resource manager. The results from the interviews have been analyzed based on the theoretical reference frame-work. In this study we have come to the conclusion that the male-dominated occupational field has gone further in the work of gender equality, for example, new dressing rooms for women. And some of the firemen's partners are against female firefighters.

Submitted by Aline Santiago da Silva Santos (aline.santos@fgv.br) on 2010-05-17T17:00:41Z No. of bitstreams: 1 CPDOC2010RogérioSMartinsCosta.pdf: 893400 bytes, checksum: e450b23399b576a95808bcfa4a306e29 (MD5) / Approved for entry into archive by Suemi Higuchi(suemi.higuchi@fgv.br) on 2010-05-17T18:07:52Z (GMT) No. of bitstreams: 1 CPDOC2010RogérioSMartinsCosta.pdf: 893400 bytes, checksum: e450b23399b576a95808bcfa4a306e29 (MD5) / Made available in DSpace on 2010-05-17T18:43:57Z (GMT). No. of bitstreams: 1 CPDOC2010RogérioSMartinsCosta.pdf: 893400 bytes, checksum: e450b23399b576a95808bcfa4a306e29 (MD5) Previous issue date: 2010-03-22 / This work is a study about a network of homoerotic sociability in Rio de Janeiro in the 1960s. Its main object are reports and accounts found in a home-produced publication produced by one, and circulated among the groups participating in the network – O Snob. The network was composed of various social groups that had been forming since the 1950s, and most participants worked out their personal identities by sharing with the larger society the belief that homoerotic individuals belonged to the 'third sex', 'suffering' from what was considered sexual inversion. Thus a peculiar for mof sociability developed – centered around parties and festive gatherings at people’s houses as a survival strategy, since the expectations of sociosexual groups were surrounded by hostility in the larger society. This study indicates which processes of sociability were going on in the network, and how such sociability, moulded in invisibility, turned out to be – though in a non-articulated or involuntary way – a basic experience in social action and in the achievement of civil rights. It promoted practices that enabled its members to attend to meetings and that can be translated as a pursuit of the right to come and go, the right to freedom of expression, albeit in a segregated (or secret?) space. Those basic rights, however, were not guaranteed to the participants of the network. There is evidence that over the period studied homoerotic groups underwent a process of resignification and redefinition of identity. / Este trabalho estuda uma rede de sociabilidade homoerótica na cidade do Rio de Janeiro na década de 1960 através da análise dos relatos contidos no jornal doméstico – produzido por um dos grupos e que circulava entre os participantes da rede – O Snob. A rede era composta por vários grupos de convivência que se vinham formando desde a década de 1950, e a maioria dos participantes elaborava suas identidades pessoais compartilhando com a sociedade maior a crença de que pertenceriam ao 'terceiro sexo', 'sofrendo' inversão sexual. Assim se desenvolveu uma forma de sociabilidade peculiar, caracterizada por encontros festivos em domicílios como estratégia de sobrevivência, visto que as expectativas sociossexuais dos grupos eram envoltas em hostilidade da sociedade maior. Desta maneira esse estudo aponta processos de sociabilização empreendidos pela rede, moldados na invisibilidade, configurando-se, ainda que de maneira não articulada (ou involuntária), em experiência de conquistas dos direitos civis e sociais ao promover ações práticas que possibilitavam encontros de seus membros e que podem ser traduzidas como o direito de ir e vir, o direito de livre expressão, ainda que num espaço segregado (ou segredado?), direitos básicos, que, no entanto, não eram garantidos aos participantes da rede. Evidencia, nessa trajetória, os processos de ressignificação identitária que os grupos vivenciaram ao longo do período estudado.

Denna uppsats avser att fokusera på kvinnor i mansdominerade branscher, i synnerhet inom byggbranschen för att göra en avgränsning. Vi vill se vilka upplevelser kvinnor i en mansdominerad bransch har kring ledarskap bland män. Detta på grund av att arbetsdelningen som existerar på arbetsmarknaden många gånger har bidragit till svårigheter för kvinnor att avancera sig till chefspositioner i arbetslivet. Både under proceduren till att nå en chefsposition men även under den tilldelade tjänsten som chef, stöter kvinnliga chefer på svårigheter i sin roll. Vi har av avsikt att belysa eventuella hinder som uppstår för kvinnliga chefer på mansdominerade yrken på grund av deras kön. Detta genom att testa våra utvalda teoretiska perspektiv och begrepp och för att se om det råder ojämlikhet på grund av kön, homosocialitet, glastak samt glashiss. Kvalitativa intervjuer utfördes och utifrån våra fyra intervjupersoners uttalanden fick vi fram ett resultat som gav oss svar på våra frågeställningar kring kvinnliga chefer i ett mansdominerat yrke. Resultatet tyder på att majoriteten av våra intervjupersoner än idag upplever mer särbehandling och hinder än möjligheter på den mansdominerade branschen de befinner sig i, på grund av att de är kvinnor. Dock upplevs känslor av att det är mer jämställt numera, i jämförelse med tidigare decennier. Därmed har vi utifrån våra intervjupersoner kunnat konstatera att problematiken i våra utvalda teoretiska perspektiv förekommer ännu i dagens samhälle och i Sverige som betraktas som ett civiliserat samhälle. Problematik i form av hinder, särbehandling samt orättvisan mellan olika kön där kvinnor är underordnade män.   Nyckelord: Könsroller, genussystem, glastak, glashiss, glasklippa, kvinnlig ledare/chef, mansdominerat yrke, särbehandling, segregerad arbetsmarknad, upplevelse. / This essay refers to have its focus on women in male-dominated industries, especially within the construction industry to make a differentiation. We want to see what kind of experience women in a male-dominated industry have around leadership among men. Therefore, the separation existing in the work environment has brought difficulties for the women to advance to manager rolls in their work-life. Women encounter difficulties in their role as a manager also during the procedure to reach an executive position. We have the motive to clear obstacles that eventually come up for female managers in male-dominated professions due to their gender. By testing through our selected ideal point of view and term, to see if it counsels the inequality that exists between the two genders and homosociality, also when it comes to the glass ceiling. When evaluating numbers of interviews that were set up with four different people, their responses guided answers to questions regarding female managers in a male-dominated industry.  The results indicate that the majority of our numbers still experience more privileges and barriers than opportunities in the male-dominated industry that they occupy themselves in, because of their gender as females. However, feelings are felt that it is more equated nowadays compared to previous decades. We are able to conclude from our interviewers that the issue in our ideal point of view still exists in today's world, even in Sweden's civilized society, Through different obstacles, special treatments, and injustice between different sexes, women end up being subordinate to men. Key Words: Gender roles, gender system, glassceiling, glass elevator, glass cliff, female manager, man dominated, special treatment, segregated labor market, experience.

"The purpose of this study is to determine the extent to which industrial arts is taught in the Negro high schools of Texas, the number of pupils enrolled in the schools, the types of programs offered the amount and kind of equipment provided for teaching industrial arts, and the qualifications of the teachers."--4.

No description available.

During recessions, the male unemployment rate tends to rise more than the female unemployment rate. Researchers agree that segregated labor markets account for most of the unemployment gap between genders. The Swedish labor market is largely divided into male- and female dominated sectors, and during the financial crisis in 2008, male workers had a higher inflow into unemployment than female ones. The male-dominated industries are often described as more reactive to cyclical fluctuations and economic growth. Differences in unemployment rates between high and low educated workers as well as natives and immigrants have also been an issue at stake, whereas low skilled and/or immigrant workers tend to have higher unemployment rates. In order to reveal which factors that drive male versus female unemployment, the regional unemployment rates of men and women are examined through a panel data analysis using the years 2005 to 2019. The findings of the study are the following: male unemployment seems to be more responsive to the industry composition and segregated labor markets, whereas female unemployment is more affected by the share of immigrants. Furthermore, when the share of college graduates is higher, the total unemployment rate is lower. Lastly, the growth in gross regional product has a positive effect on the regional unemployment rate amongst men. / Under lågkonjunkturer tenderar män att förlora arbetet i större utsträckning, vilket forskningen förklarar som en produkt av könssegregerade arbetsmarknader. Den svenska arbetsmarknaden är kraftigt könsuppdelad och under finanskrisen 2008 förlorade fler män än kvinnor sina arbeten. De mansdominerade yrkena beskrivs i många fall som känsliga för konjunkturförändringar och att arbetslösheten bland män svarar mer till förändringar i den ekonomiska tillväxten. Forskningen har också pekat på skillnader i arbetslöshet mellan hög- och lågutbildade såväl som för inrikes- och utrikes födda individer. För att utreda vad som påverkar män och kvinnors arbetslöshet studeras arbetslöshetsnivåerna uppdelat på kön i Sveriges samtliga 21 regioner under tidsspannet 2005 – 2019 i en paneldataanalys. Studien visar på skilda effekter för arbetslösheten bland män respektive kvinnor utifrån regioners branschstruktur och andel utrikes födda: arbetslösheten bland män svarar mer till branschstrukturen och den ojämna könsfördelningen än för kvinnor, medan arbetslösheten bland kvinnor tenderar att öka mer när andelen utrikes födda ökar. Andelen med högre utbildning har en minskande effekt på den totala arbetslösheten, men visar inte på några statistiskt säkerställda samband vad gäller män och kvinnors arbetslöshet separat. Bruttoregionalproduktens tillväxt ger ökande effekter på arbetslösheten bland män, men visar inte på något signifikant samband på arbetslösheten bland kvinnor.