994 resultados para Schoppe, Kaspar, 1576-1649


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Numérisation partielle de reliure

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Comprend : [Planche dépliante avec deux cartes du Pérou] [Cote : BNF C125287]

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Comprend : [Portrait en reg. folio I : portrait de l'auteur, Jean Boccace, dessiné par P. Jude et gravé par Bonenfant d'après une peinture de Titien.] Johannes Boccatius. [Cote : Res Y2 402/Microfilm R 1601] ; [Fig. folio I : Jean Boccace rédigeant son livre.] Bocace. [Cote : Res Y2 402/Microfilm R 1601] ; [Fig. folio xlviii : Jean Boccace rédigeant son livre.] Bocace. [Cote : Res Y2 402/Microfilm R 1601] ; [Fig. en reg. folio lxxi : Jean Boccace rédigeant son livre.] Bocace. [Cote : Res Y2 402/Microfilm R 1601] ; [Fig. en reg. folio lxxiiii : Jean Boccace rédigeant son livre.] Bocace. [Cote : Res Y2 402/Microfilm R 1601] ; [Fig. en reg. folio xcv : Jean Boccace rédigeant son livre.] Bocace. [Cote : Res Y2 402/Microfilm R 1601] ; [Fig. avant folio cxv : Jean Boccace rédigeant son livre.] Bocace. [Cote : Res Y2 402/Microfilm R 1601] ; [Fig. folio cxxviii : Jean Boccace rédigeant son livre.] Bocace. [Cote : Res Y2 402/Microfilm R 1601] ; [Fig. en reg. folio clxvii : Jean Boccace rédigeant son livre.] Bocace. [Cote : Res Y2 402/Microfilm R 1601] ; [Fig. en reg. folio ccvii: Jean Boccace rédigeant son livre.] Bocace. [Cote : Res Y2 402/Microfilm R 1601] ; [Fig. folio ccxxxiiii : Jean Boccace rédigeant son livre.] Bocace. [Cote : Res Y2 402/Microfilm R 1601]

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Background Addressing the risks of nanoparticles requires knowledge about their hazards, which is generated progressively, but also about occupational exposure and liberation into the environment. However, currently such information is not systematically collected, therefore the risk assessment of this exposure or liberation lacks quantitative data. In 2006 a targeted telephone survey among Swiss companies (1) showed the usage of nanoparticles in a few selected companies but did not provide data to extrapolate on the totality of the Swiss workforce. The goal of this study was to evaluate in a representative way the current prevalence and level of nanoparticle usage in Swiss industry, the health, safety and environment measures, and the number of potentially exposed workers. Results A representative, stratified mail survey was conducted among 1,626 clients of the Swiss National Accident Insurance Fund (SUVA). SUVA insures about 80,000 manufacturing firms, which represent 84% of all Swiss manufacturing companies. 947 companies answered the survey (58.3% response rate). Extrapolation to all Swiss manufacturing companies results in 1,309 workers (95%-confidence interval, 1,073 to 1,545) across the Swiss manufacturing sector being potentially exposed to nanoparticles in 586 companies (95%-CI: 145 to 1'027). This corresponds to 0.08% (95%-CI: 0.06% to 0.09%) of all Swiss manufacturing sector workers and to 0.6% (95%-CI: 0.2% to 1.1%) of companies. The industrial chemistry sector showed the highest percentage of companies using nanoparticles (21.2% of those surveyed) and a high percentage of potentially exposed workers (0.5% of workers in these companies), but many other important sectors also reported nanoparticles. Personal protection equipment was the predominant protection strategy. Only a minority applied specific environmental protection measures. Conclusions This is the first representative nationwide study on the prevalence of nanoparticle usage across a manufacturing sector. The information about the number of companies can be used for quantitative risk assessment. Furthermore it can help policy makers designing strategies to support companies in the responsible development of safer nanomaterial use. Noting the low prevalence of nanoparticle usage, there would still seem to be time to introduce necessary protection methods in a proactive and cost effective way in Swiss industry. But if the predicted "nano-revolution" becomes true, now is the time to take action.

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A large number of applications using manufactured nanoparticles of less than 100 nm are currently being introduced into industrial processes. There is an urgent need to evaluate the risks of these novel particles to ensure their safe production, handling, use, and disposal. However, today we lack even rudimentary knowledge about type and quantity of industrially used manufactured nanoparticles and the level of exposure in Swiss industry. The goal of this study was to evaluate the use of nanoparticles, the currently implemented safety measures, and the number of potentially exposed workers in all types of industry. To evaluate this, a targeted telephone survey was conducted among health and safety representatives from 197 Swiss companies. The survey showed that nanoparticles are already used in many industrial sectors; not only in companies in the new field of nanotechnology, but also in more traditional sectors, such as paints. Forty-three companies declared to use or produce nanoparticles, and 11 imported and traded with prepackaged goods that contain nanoparticles. The following nanoparticles were found to be used in considerable quantities (> 1000 kg/year per company): Ag, Al-Ox, Fe-Ox, SiO2, TiO2, and ZnO. The median reported quantity of handled nanoparticles was 100 kg/year. The production of cosmetics, food, paints, powders, and the treatment of surfaces used the largest quantities of these nanoparticles. Generally, the safety measures were found to be higher in powder-based than in liquid-based applications. However, the respondents had many open questions about best practices, which points to the need for rapid development of guidelines and protection strategies

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We report here on a new insight for bio- sensing based on the memristive effect of functional- ized Schottky-barrier memristive silicon nanowire in dry environment. The device concept is discussed. Elec- trical measurements confirm the bio-detection by the narrowing of the memristive Ids − Vds hysteresis upon interaction of antigen with antibody-functionalized nanowire.