Albert Guttstadt

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Transparent Metal-Salt-Filled Polymeric Radiation Shields

"COR-RA" (colorless atomic oxygen resistant -- radiation shield) is the name of a transparent polymeric material filled with x-ray-absorbing salts of lead, bismuth, cesium, and thorium. COR-RA is suitable for use in shielding personnel against bremsstrahlung radiation from electron-beam welding and industrial and medical x-ray equipment. In comparison with lead-foil and leaded-glass shields that give equivalent protection against x-rays (see table), COR-RA shields are mechanically more durable. COR-RA absorbs not only x-rays but also neutrons and rays without adverse effects on optical or mechanical performance. The formulation of COR-RA with the most favorable mechanical-durability and optical properties contains 22 weight percent of bismuth to absorb x-rays, plus 45 atomic percent hydrogen for shielding against neutrons

Silicon Whisker and Carbon Nanofiber Composite Anode

A carbon nanofiber can have a surface and include at least one crystalline whisker extending from the surface of the carbon nanofiber. A battery anode composition can be formed from a plurality of carbon nanofibers each including a plurality of crystalline whiskers

Beitrag zur Genese der weichen Fibrome, nebst Bemerkungen über das Vorkommen von elastischen Fasern im Epithel

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Interdisciplinaridade, colaboração e imersão: o design de uma experiência em realidade virtual com o objetivo de preservação da memória

The digital culture has enabled new ways of artifacts fruition in museums. This article addresses the importance of interdisciplinary and collaborative work in the design of projects that use digital technologies to create meaningful experiences for the public. As a case study, it presents the V-Horus project, which has as its objective the digital reconstruction of archaeological artifacts and their visualization through virtual reality. In an experimental phase, the project digitally reconstructed a mummy, from the Egyptian collection of the National Museum of Rio de Janeiro, which was destroyed in the fire that occurred in 2018. In the article, a report is presented of both, the development of the experience and its evaluation by the public, assessed through a survey conducted with 153 users. The results show that the experiment expanded the visualization possibilities of museum collections and that the interdisciplinary approach of the project was essential to create an experience that sensitized and engaged the public.A cultura digital tem possibilitado novas formas de fruição de artefatos em museus. Este artigo aborda a importância do trabalho interdisciplinar e colaborativo no design de projetos que utilizam tecnologias digitais para criar experiências significativas para o público. Como estudo de caso, apresenta o projeto V-Horus, cujo objetivo é a reconstrução digital de artefatos arqueológicos e a sua visualização por meio de realidade virtual. Em fase experimental, o projeto reconstruiu digitalmente uma múmia da coleção egípcia do Museu Nacional do Rio de Janeiro, destruída no incêndio ocorrido em 2018. No artigo, são relatados o desenvolvimento da experiência e a avaliação da mesma pelo público, realizada por meio de uma pesquisa com 153 usuários. Os resultados mostram que o experimento ampliou as possibilidades de visualização dos acervos em museus e que a abordagem interdisciplinar do projeto foi essencial para criar uma experiência que sensibilizasse e engajasse o público

Seeing Community for the Trees: The Links among Contact with Natural Environments, Community Cohesion, and Crime

Individuals may be losing touch with nature as their contact with it decreases worldwide. Although the consequences for people's personal well-being outcomes are becoming well documented, there is almost no research examining the social correlates of contact with nature. This article used a large nationally representative sample to link objective (percent greenspace) and subjective measurements of contact with nature, community cohesion, and local crime incidence. The perceived quality, views, and amount of time spent in nature were linked to more community cohesion, and in turn, the perception of cohesive communities enhanced individual well-being outcomes and contributions back to society through higher workplace productivity and environmentally responsible behaviors. Our findings also indicated that local nature was linked to lower crime both directly and indirectly through its effects on community cohesion

Mahomet Aquifer Protection Task Force: Findings and Recommendations

The Mahomet Aquifer is one of Illinois’ most important groundwater resources, serving as the primary source of drinking water for more than 500,000 people in 15 Illinois counties and providing an estimated 220 million gallons of water per day to communities, agriculture, industry, and rural wells. In 2017, the Illinois General Assembly created the Mahomet Aquifer Protection Task Force (Task Force) to identify gaps in existing aquifer-protection regulations and efforts, specifically by: Developing a state plan to maintain the groundwater quality of the Mahomet Aquifer; Identifying current and potential contamination threats to the water quality of the Mahomet Aquifer; Identifying actions that might be taken to ensure the long-term protection of the Mahomet Aquifer; and Making legislative recommendations for the protection of the Mahomet Aquifer. The Task Force investigated and considered various actions, including legislative actions, to ensure the long-term protection of the Mahomet Aquifer and makes the following prioritized recommendations to the General Assembly and the Governor: 1. Provide 19.8 million dollars to the Prairie Research Institute (PRI) to use helicopter-based time-domain electromagnetics (HTEM) technology to more accurately map and characterize the Mahomet Aquifer to aid in identifying the connections with other aquifers and surface waters. 2. Use HTEM and other techniques to identify areas where the Mahomet Aquifer is recharged. 3. Integrate data collected via HTEM into next-generation groundwater flow models. 4. Develop and implement source water protection plans pursuant to 35 Ill. Adm. Code 604 Subpart C, after the effective date of adoption, for the community water supplies determined to be susceptible to groundwater contamination. 5. Implement the recommendations outlined for each identified threat and potential threat (as detailed below and in Section III.A) and provide additional funding (1 million dollars for one-time equipment acquisition and an additional 2.3 million annually) to PRI to deploy state-of-the-art monitoring networks and create the analytical capability to identify emerging contaminants of concern. 6. Improve education and outreach regarding the Mahomet Aquifer such that all stakeholders are better informed about water resources, water demand, and water supply planning and management, particularly when plans are made, reviewed, and updated. 7. Develop a group with a mission similar to the Mahomet Aquifer Protection Task Force that is a blend of other select individuals that serve in a quasi-government or government capacity to provide leadership, administrative stature, or process for regional water supply. 8. Plan cooperative research and data collection, analysis, management, and exchange by academic institutions, units of government, the private sector, and other stakeholders. 9. Use the established water supply planning process to review and update regional and local water supply plans at least every five years. 10. Ensure comprehensive use reporting by consistently and fully funding the Illinois Water Inventory Program.Illinois General AssemblyOpe

Das ländliche Gesindewesen in der Kurmark Brandenburg vom 16. bis 19. Jahrhundert

von Ernst Lennhof