2,103 research outputs found

    Qualitative and quantitative analysis of mixtures of compounds containing both hydrogen and deuterium

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    Method allows qualitative and quantitative analysis of mixtures of partially deuterated compounds. Nuclear magnetic resonance spectroscopy determines location and amount of deuterium in organic compounds but not fully deuterated compounds. Mass spectroscopy can detect fully deuterated species but not the location

    Detectability of Local Water Reservoirs in Europa's Surface Layer under Consideration of Coupled Induction

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    The icy moon Europa is a primary target for the study of ocean worlds. Its subsurface ocean is expected to be subject to asymmetries on global scales (tidal deformation) and local scales (chaos regions, fractures). Here, we investigate the possibility to magnetic sound local asymmetries by calculating the induced magnetic fields generated by a radially symmetric ocean and a small, spherical water reservoir between the ocean and Europa's surface. The consideration of two conductive bodies introduces non-linear magnetic field coupling between them. We construct an analytical model to describe the coupling between two conductive bodies and calculate the induced fields within the parameter space of possible conductivity values and icy crust thicknesses. Given the plasma magnetic field perturbations, we find that a reservoir cannot be detected during a flyby at 25 km altitude using electromagnetic induction. Potential detection of liquid water reservoirs can be achieved by deploying magnetometers on Europa's surface, where one magnetometer is placed directly on the target region of interest and a second one in the nearby vicinity as reference to distinguish from global asymmetries. With this method, the smallest reservoir that can be detected has a radius of 8 km and a conductivity of 30 S/m. Larger reservoirs are resolvable at lower conductivities, with a 20 km reservoir requiring a conductivity of approximately 5 S/m

    Stationary Fuel Cell System Composite Data Products: Data Through Quarter 4 of 2012

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    This presentation from the U.S. Department of Energy's National Renewable Energy Laboratory includes stationary fuel cell system composite data products for data through the fourth quarter of 2012

    Innovation cooperation networks: case of a multisectoral and interdisciplinary partnership

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    Network cooperation processes gained special interest in the new knowledge economy as they provide better conditions to innovation and knowledge creation and diffusion. Although the importance of this strategic tool has been increasingly recognized, individualistic behaviour tends to prevail within small and medium-sized firms and many of them continue to exhibit an attitude of resistance when dealing with collaborative experiences. This paper has two main goals. First, it explores how networks can promote innovation and help overcome the difficulties inherent in cooperation processes. Second, it illustrates an innovative approach to network cooperation in a multisectoral and inter-disciplinary environment, presenting the experience of the ā€œHouse of the Futureā€ network in Aveiro, Portugal

    How to promote interdisciplinary R&D in the academia: the case of the ā€œHouse of the Futureā€

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    While empirical research does indeed suggest that collaborative R&D has many desirable outcomes, it is also clear that collaborative work is difficult and expensive. The challenge becomes increasingly sharp as complex and expensive research questions require a large pool of resources and a combination of specialized disciplines. As a result, different organizations get involved in interdisciplinary projects to expand the frontiers of knowledge. This paper analyzes the strategy and methodological approaches used to mobilize interdisciplinary R&D within a universityindustry network named ā€˜House of the Futureā€™. We discuss the implications of our research for R&D networks design

    Magnetism in the Brown Dwarf Regime

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    A suite of discoveries in the last two decades demonstrate that we are now at a point where incorporating magnetic behavior is key for advancing our ability to characterize substellar and planetary systems. The next decade heralds the exciting maturation of the now-burgeoning field of brown dwarf magnetism, and investing now in brown dwarf magnetism will provide a key platform for exploring exoplanetary magnetism and habitability beyond the solar system. We anticipate significant discoveries including: the nature of substellar and planetary magnetic dynamos, the characterization of exo-aurora physics and brown dwarf magnetospheric environments, and the role of satellites in manifestations of substellar magnetic activity. These efforts will require significant new observational capabilities at radio and near infrared wavelengths, dedicated long-term monitoring programs, and committed support for the theoretical modeling efforts underpinning the physical processes of the magnetic phenomenaComment: Decadal 2020 science white pape

    Peramalan Pasang Surut Di Perairan Ujungnegoro Kabupaten Batang Jawa Tengah

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    Pantai Ujungnegoro memiliki luas kawasan 6.800 Ha.Sebagian besar penduduk di pesisir pantai ujungnegoro yang sebagian besar bermata pencaharian sebagai nelayan. Sebagai wilayah yang terpencil yang dikelilingi oleh laut, dan memiliki potensi wisata bahari yang sangat besar, wilayah ini tidak lepas dari pengaruh parameter oseanografi yaitu pasang surut. Pasang surut merupakan suatu fenomena pergerakan naik turunnya permukaan air laut secara berkala yang diakibatkan oleh kombinasi gaya gravitasi dan gaya tarik benda-benda astronomi terutama oleh bumi, bulan dan matahari. Tujuan dilakukannya penelitian ini adalah untuk meramalkan pasang surut di perairan pantai ujungnegoro karena pasang surut pada tiap perairan berbeda- beda.Analisis harmonik pasang surut menggunakan metode Admiralty. Tujuan perhitungan metode admiralty adalah untuk mendapatkan konstanta harmonik pasang surut yang meliputi Amplitudo, M2, S2, K1, O1, N2, K2, P1, M4, MS4. Hasil dari metode Admiralty diperoleh nilai Formzahl sebesar 1,57 cm maka pasang surut perairan Pantai Ujungnegoro adalah bertipe pasang surut harian tunggal dengan MSL = 64,3 cm, LLWL = 49 cm, dan HHWL = 80 cm.Peramalan Pasang Surut menggunakan software MIKE 21 yang memiliki nilai MRE sebesar 10,761

    Supporting the learning of deaf students in higher education: a case study at Sheffield Hallam University

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    This article is an examination of the issues surrounding support for the learning of deaf students in higher education (HE). There are an increasing number of deaf students attending HE institutes, and as such provision of support mechanisms for these students is not only necessary but essential. Deaf students are similar to their hearing peers, in that they will approach their learning and require differing levels of support dependant upon the individual. They will, however, require a different kind of support, which can be technical or human resource based. This article examines the issues that surround supporting deaf students in HE with use of a case study of provision at Sheffield Hallam University (SHU), during the academic year 1994-95. It is evident that by considering the needs of deaf students and making changes to our teaching practices that all students can benefit
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