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Sample records for preparation foundations support

  1. Dynamic Analysis of Foundation Supporting Rotary Machine

    Directory of Open Access Journals (Sweden)

    Utkarsh S. Patel

    2015-08-01

    Full Text Available With the advancement of technology in the field of industry, high speed machinery has been developed. As the speed of machinery has increased, vibrations also increased. Machines transmit vibrations to the structure supporting them. Hence, it is important to design and develop such structure which sustains the vibrations of machinery. Hence, in this study it has been aimed to execute the study on foundations supporting rotary type of machine like blower. In this paper, the most important parameters like frequency and amplitude are considered while execution of analysis of machine foundation supporting blower type machine. This paper shows, better interface between foundation designer and machine manufacturer for better performance of machine. The design aids/approaches for foundation design is also described in this paper and an attempt has been made to study the dynamic behaviour of a foundation structure for blower type machine subjected to forces due to operation of blower machine. Two different types of foundations for Rotary type Machine that is Blower have been studied in this paper

  2. Systems Diagnostics: A McREL Report Prepared for Stupski Foundation's Learning System

    Science.gov (United States)

    Igel, Charles; Apthorp, Helen; Peterson, Gary; Davis, Tony; Moore, Laurie; Englert, Kerry

    2009-01-01

    This document is one of eight reports prepared to support the development of a new learning system, an effort that is the first step in a major initiative undertaken by the Stupski Foundation. The report was created collaboratively by researchers from McRel with guidance from officers of the Stupski Foundation. Its purpose is to provide members of…

  3. The conceptual foundation of environmental decision support.

    Science.gov (United States)

    Reichert, Peter; Langhans, Simone D; Lienert, Judit; Schuwirth, Nele

    2015-05-01

    Environmental decision support intends to use the best available scientific knowledge to help decision makers find and evaluate management alternatives. The goal of this process is to achieve the best fulfillment of societal objectives. This requires a careful analysis of (i) how scientific knowledge can be represented and quantified, (ii) how societal preferences can be described and elicited, and (iii) how these concepts can best be used to support communication with authorities, politicians, and the public in environmental management. The goal of this paper is to discuss key requirements for a conceptual framework to address these issues and to suggest how these can best be met. We argue that a combination of probability theory and scenario planning with multi-attribute utility theory fulfills these requirements, and discuss adaptations and extensions of these theories to improve their application for supporting environmental decision making. With respect to (i) we suggest the use of intersubjective probabilities, if required extended to imprecise probabilities, to describe the current state of scientific knowledge. To address (ii), we emphasize the importance of value functions, in addition to utilities, to support decisions under risk. We discuss the need for testing "non-standard" value aggregation techniques, the usefulness of flexibility of value functions regarding attribute data availability, the elicitation of value functions for sub-objectives from experts, and the consideration of uncertainty in value and utility elicitation. With respect to (iii), we outline a well-structured procedure for transparent environmental decision support that is based on a clear separation of scientific prediction and societal valuation. We illustrate aspects of the suggested methodology by its application to river management in general and with a small, didactical case study on spatial river rehabilitation prioritization.

  4. Seismic Response of Offshore Wind Structure Supported by Bucket Foundation

    Institute of Scientific and Technical Information of China (English)

    丁红岩; 熊康平; 张浦阳

    2016-01-01

    An integrated finite element model(FEM)of offshore wind tower-foundation-soil is established by ABAQUS, where a large-scale composite bucket foundation with seven compartments inside is applied to support-ing the upper wind tower. The dynamic response of the structure-foundation system is studied under three seismic waves with the same peak ground acceleration of 0.035g. It can be seen that the dynamic response increases at the beginning with the structure height, then it decreases because the structural damping increases due to the mass ef-fect of the upper wind turbine generator system. It is shown that the anti-liquefaction capacity of the soil inside and underneath the foundation is improved owing to the high overburden pressure of the upper structure and the con-straint effect of the bucket skirt and subdivisions. Moreover, the liquefaction resistance of the soil inside the middle compartment is improved to a higher degree than that inside the side compartments.

  5. TOGAF version 9 foundation study guide preparation for the TOGAF 9 Part 1 examination

    CERN Document Server

    Harrison, Rachel

    2009-01-01

    This document is a Study Guide for TOGAF™ 9 Foundation.It gives an overview of every learning objective for the TOGAF 9 Foundation Syllabus and in-depth coverage on preparing and taking the TOGAF 9 Part 1 Examination. It is specifically designed to help individuals prepare for certification.

  6. Foundations

    Science.gov (United States)

    Harteveld, Casper

    A building will more likely collapse if it does not have any proper foundations. Similarly, the design philosophy of Triadic Game Design (TGD) needs to reside on solid building blocks, otherwise the concept will collapse as well. In this level I will elaborate on these building blocks. First I will explain what the general idea of TGD is. It is a design philosophy, for sure, but one which stresses that an “optimum” needs to be found in a design space constituted by three different worlds: Reality, Meaning, and Play. Additionally, these worlds need to be considered simultaneously and be treated equally. The latter requires balancing the worlds which may result in different tensions, within and between two or three of the worlds. I continue by discussing each of the worlds and showing their perspective on the field of games with a meaningful purpose. From this, we clearly see that it is feasible to think of each world and that the idea makes sense. I substantiate this further by relating the notion of player and similar approaches to this framework. This level is quite a tough pill to swallow yet essential for finishing the other levels. Do not cheat or simply skip this level, but just take a big cup of coffee or tea and start reading it.

  7. Dynamics of large rotors on spring supported foundations

    Energy Technology Data Exchange (ETDEWEB)

    Puttonen, J. [IVO Power Engineering Ltd., Vantaa (Finland)] Luukkanen, P. [Imatran Voima Oy, Vantaa (Finland)

    1997-12-31

    This article presents some case studies relating to the dynamics of the large machines on spring isolated foundations. The studies comprise both vibration calculations and measurements also introducing the accuracy of numerical methods available in practical engineering. A summary of the pros and cons of spring isolated foundations in power plants is included. The cases described are from the lately built power plants of the IVO-group. The auxiliary feed water pump analysed consists of an electric motor (7 MW), a gear and two pumps. During the trial runs, severe vibrations were observed calling for thorough vibration measurements. The modelling of the whole vibrating entity in the rotating machinery, including the shaft train, oil films of bearings and the foundation is demonstrated by a turbine generator set of 100 MW. Finally, some results of a test comparing the acoustic emission and traditional vibration measurements for recognizing the rub between the shaft and the hydrodynamic bearing are presented. (orig.) 6 refs.

  8. Structural Design and Monitoring Analysis of Foundation Pit Support in Yiwu Huishang Tiandi

    Science.gov (United States)

    Zhang, Chunsu

    2017-08-01

    Huishang Tiandi deep foundation pit in Yiwu is a two-story basement,which is located in the downtown area and adjacent to the city center main traffic trunk. The surrounding environment is too com-plex to slope. The excavation depth is large, the formation is weak and complex, and the groundwater level is high.In order to ensure the safety of the foundation wall and the surrounding environment, the deformation of the foundation pit support is strictly controlled, and the deformation and internal force of the foundation supporting structure and the surrounding building are monitored.The deformation law of the foundation pit is obtained through the analysis of the horizontal displacement, the deformation rate of the supporting struc-ture, the surrounding environment of the foundation pit and the internal force of the anchor cable. The relia-bility and rationality of the design of foundation pit support are verified. It is of reference value for the de-sign and construction of other deep foundation pit engineering in Yiwu area.

  9. Preparation of flat carbon support films

    NARCIS (Netherlands)

    Koning, RI; Oostergetel, GT; Brisson, A

    2003-01-01

    Wrinkling of carbon support films is known to limit the resolution of electron microscopy images of protein two-dimensional crystals. The origin of carbon wrinkling during preparation of the support films was investigated by reflected light microscopy. We observed that carbon films go through severa

  10. Three-dimensional elasticity solution of simple-supported rectangular plate on point supports,line supports and elastic foundation

    Institute of Scientific and Technical Information of China (English)

    XU YePeng; ZHOU Ding

    2009-01-01

    This paper studies the bending of simple-supported rectangular plate on point supports, line supports and elastic foundation. On the basis of three-dimensional elasticity theory, the exact expressions of the displacement functions, which satisfy the governing differential equations and the simply supported boundary conditions at four edges of the plate, are analytically derived. The reaction forces of the in-termediate supports are regarded as the unknown external forces acting on the lower surface of the plate. The unknown coefficients are then determined by the boundary conditions on the upper and lower surfaces of the plate. Comparing the numerical results obtained from the proposed method to those obtained from Kirchhoff plate theory, Mindlin plate theory and those obtained from the commer-cial finite element software ANSYS, the high accuracy of the present method has been demonstrated.

  11. Three-dimensional elasticity solution of simple-supported rectangular plate on point supports, line supports and elastic foundation

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    This paper studies the bending of simple-supported rectangular plate on point supports, line supports and elastic foundation. On the basis of three-dimensional elasticity theory, the exact expressions of the displacement functions, which satisfy the governing differential equations and the simply supported boundary conditions at four edges of the plate, are analytically derived. The reaction forces of the in- termediate supports are regarded as the unknown external forces acting on the lower surface of the plate. The unknown coefficients are then determined by the boundary conditions on the upper and lower surfaces of the plate. Comparing the numerical results obtained from the proposed method to those obtained from Kirchhoff plate theory, Mindlin plate theory and those obtained from the commer- cial finite element software ANSYS, the high accuracy of the present method has been demonstrated.

  12. A theoretical foundation for building Knowledge-work Support Systems

    CERN Document Server

    Laha, Arijit

    2009-01-01

    In this paper we propose a novel approach aimed at building a new class of information system platforms which we call the "Knowledge-work Support Systems" or KwSS. KwSS can play a significant role in enhancing the IS support for knowledge management processes, including those customarily identified as less amenable to IS support. In our approach we try to enhance basic functionalities provided by the computer-based information systems, namely, that of improving the efficiency of the knowledge workers in accessing, processing and creating useful information. The improvement, along with proper focus on cultural, social and other aspects of the knowledge management processes, can enhance the workers' efficiency significantly in performing high quality knowledge works. In order to build the proposed approach, we develop several new concepts. The approach analyzes the information availability and usage from the knowledge workers and their works' perspectives and consequently brings forth more transparency in vario...

  13. TOGAF 9 foundation study guide preparation for the TOGAF 9 part 1 examination

    CERN Document Server

    Harrison, Rachel

    2013-01-01

    This title is a Study Guide for Togaf® 9 Foundation. It gives an overview of every learning objective for the Togaf 9 Foundation Syllabus and in-depth coverage on preparing and taking the Togaf 9 Part 1 Examination. It is specifically designed to help individuals prepare for certification. This Study Guide is excellent material for: * Individuals who require a basic understanding of Togaf 9; * Professionals who are working in roles associated with an architecture project such as those responsible for planning, execution, development, delivery, and operation; * Architects who are looking for a first introduction to Togaf 9; * Architects who want to achieve Level 2 certification in a stepwise manner and have not previously qualified as Togaf 8 Certified. A prior knowledge of enterprise architecture is advantageous but not required.

  14. Numerical Investigation Into The Behavior of Circular Pad Shallow Foundations Supported By Geogrid Reinforced Sand

    Directory of Open Access Journals (Sweden)

    S. M. Marandi

    2008-01-01

    Full Text Available This study seeks to widen the pool of knowledge on the use and characteristics of geosynthetics, specifically in the area of circular foundations supported by geosynthetic reinforced sand. The main objective of the work was to increase the awareness of circular foundation systems and thus increase the accuracy of current laboratory methods. Also, compare the results with that of previous papers on the subject and to provide new model curves to estimate the bearing capacity of circular foundations. In this respect, the foundation and the soil underneath was modeled using four nots isoparameters finite element aid, while, for geogrid reinforcement, the four nots one-dimentional finite element model was used. The sand behavior was based on demolition elasto-plastic drucker-prager criteria and for the reinforcement the linear criteria was used. The paper investigates the effects of the reinforcement placing properties, soil properties, reinforcement properties, and the geometric properties of circular foundations. The results showed that; the bearing capacity ratio at a settlement level for geogrid reinforced sand is effected considerably by parameters such as: reinforcement placement, reinforcement layers, reinforcement strength, geometric properties of circular foundations, and effects of using granular soils. Based on the results achieved, a number of design curves have been developed to assist with the estimation (design of field bearing capacity of shallow foundations supported by geogrid reinforced soil. Keeping in mind the settlement limitations in real space, the curves have been developed for normal settlement levels up to a settlement ratio of 2.5%.

  15. Overhead lines: equipments. Foundations of supports; Lignes aeriennes: materiels. Fondations des supports

    Energy Technology Data Exchange (ETDEWEB)

    Naud, D. [Reseau de Transport d' Electricite (RTE), 92 - Paris la Defense (France)

    2004-02-01

    The foundation is a buried structure which ties down in the ground the superstructure (overhead line tower). This article presents: 1 - the different categories of foundations; 2 - the selection criteria: dimensioning, safety (stability, safety, geo-technical context); 3 - the calculation method: resistance with respect to throwing down, tearing up, and compression. (J.S.)

  16. A Linear Programming Model to Optimize Various Objective Functions of a Foundation Type State Support Program.

    Science.gov (United States)

    Matzke, Orville R.

    The purpose of this study was to formulate a linear programming model to simulate a foundation type support program and to apply this model to a state support program for the public elementary and secondary school districts in the State of Iowa. The model was successful in producing optimal solutions to five objective functions proposed for…

  17. On the vibrations of a simply supported square plate on a weakly nonlinear elastic foundation

    NARCIS (Netherlands)

    Zarubinskaya, M.A.; Van Horssen, W.T.

    2003-01-01

    In this paper an initial-boundary value problem for a weakly nonlinear plate equation with a quadratic nonlinearity will be studied. This initial-boundary value problem can be regarded as a simple model describing free oscillations of a simply supported square plate on an elastic foundation. It is a

  18. INSTRUMENTS OF SUPPORT FOR RESEARCH AND DEVELOPMENT FUNDED BY LEADING DOMESTIC AND INTERNATIONAL SCIENCE FOUNDATIONS

    Directory of Open Access Journals (Sweden)

    Irina E. Ilina

    2017-06-01

    Full Text Available Introduction: one of the key aspects of the knowledge economy development is the growing significance of the results of research and development. The education and basic research play a key role in this process. Funding for education and fundamental science is carried out mainly at the expense of the state resources, including a system of foundations for scientific, engineering and innovation activities in Russia. The purpose of this article is to present recommendations for improving the tools of domestic foundations in funding fundamental research and development, including education and training. The propositions are made with a comparative analysis of the domestic and foreign science foun dations’ activities. Materials and Methods: the authors used analysis, comparison, induction, deduction, graphical analysis, generalisation and other scientific methods during the study. Results: the lack of comparability between domestic and foreign scientific funds in the volume of funding allocated for basic research and development is revealed. This situation affects the scientific research. The foreign foundations have a wide range of instruments to support research projects at all stages of the life cycle of grants for education and training prior to release of an innovative product to market (the use of “innovation elevator” system. The Russian national scientific foundations have no such possibilities. The authors guess that the Russian organisations ignore some of the instruments for supporting research and development. Use of these tools could enhance the effectiveness of research projects. According to the study of domestic and foreign experience in supporting research and development, the authors proposed a matrix composed of instruments for support in the fields of basic scientific researches and education with such phases of the project life cycle as “research” and “development”. Discussion and Conclusions: the foreign science

  19. Response to Concentrated Moving Masses of Elastically Supported Rectangular Plates Resting on Winkler Elastic Foundation

    Directory of Open Access Journals (Sweden)

    Awodola T. O.

    2014-09-01

    Full Text Available The dynamic response to moving concentrated masses of elastically supported rectangular plates resting on Winkler elastic foundation is investigated in this work. This problem, involving non-classical boundary conditions, is solved and illustrated with two common examples often encountered in engineering practice. Analysis of the closed form solutions shows that, for the same natural frequency (i the response amplitude for the moving mass problem is greater than that one of the moving force problem for fixed Rotatory inertia correction factor R0 and foundation modulus F0, (ii The critical speed for the moving mass problem is smaller than that for the moving force problem and so resonance is reached earlier in the former. The numerical results in plotted curves show that, for the elastically supported plate, as the value of R0 increases, the response amplitudes of the plate decrease and that, for fixed value of R0, the displacements of the plate decrease as F0 increases. The results also show that for fixed R0 and F0, the transverse deflections of the plates under the actions of moving masses are higher than those when only the force effects of the moving load are considered. Hence, the moving force solution is not a save approximation to the moving mass problem. Also, as the mass ratio Γ approaches zero, the response amplitude of the moving mass problem approaches that one of the moving force problem of the elastically supported rectangular plate resting on constant Winkler elastic foundation.

  20. Explore the Pile Foundation Construction and Supporting of the Soft Soil Foundation in the Foundation Pit Excavation%基坑开挖中软土地基的支护与桩基施工研究

    Institute of Scientific and Technical Information of China (English)

    龙永卫

    2014-01-01

    在软土地基的开挖过程中,桩体支护结构及桩基的应用非常广泛。本文主要结合两个实例,对分别对深基坑灌注桩支护工程及基坑开挖和桩基施工进行了探讨,以掌握施工程序、要点及方式等。%In the process of soft soil foundation excavation, the pile and pile foundation retaining structure have a very wi-de range of applications. This article combines with two inst-ances to discuss the deep foundation pit support engineering as wel as the foundation pit excavation and pile foundation cons-truction, in order to grasp the construction procedures, essenti-als and ways, etc.

  1. Classroom assessment of reading comprehension: How are preservice Foundation Phase teachers being prepared?

    Directory of Open Access Journals (Sweden)

    Carisma Nel

    2012-04-01

    Full Text Available A number of assessment studies in recent years have shown that the educational achievement of learners in South African schools is unacceptably poor. The Department of Education’s systemic evaluations, conducted in Grade 3 (first cycle in 2001, second cycle in 2007 show very low levels of literacy among learners. Reading comprehension and writing scores averaged 39% for the first and 36% for the second cycle. Research indicates that less attention has been given to children’s reading comprehension skills compared to decoding skills. Teacher preparation programmes should provide candidates with a rigorous, research-based curriculum and opportunities to practise a range of predefined skills and knowledge. The demands of competent literacy instruction and assessment, and the training experiences necessary to learn it, have been seriously underestimated by universities. Teacher education programmes should ensure that teachers, amongst other crucial aspects, know how to assess the progress of every student and change instruction when it is not working and also know how to communicate results of assessments to various stakeholders, especially parents. The purpose of this article is to report on the training that pre-service teachers receive, related to reading comprehension assessment practices, within a BEd foundation phase teacher preparation programme.

  2. Methodological Foundation for Preparation of Teachers-Philologists for Intercultural Communication of Schoolchildren in the Danube Region

    Directory of Open Access Journals (Sweden)

    Natalia Mushynska

    2013-08-01

    Full Text Available In the given article the problem of the formation of intercultural communication of teachers-philologists in the countries of Danube Region is analyzed. Methodological foundation for preparation to intercultural communication, as one of the priorities of modern education, is under consideration.

  3. Application of FLAC3D in supporting engineering of deep foundation ditch

    Institute of Scientific and Technical Information of China (English)

    Jianhui QIU; Xueda SONG; Yunzheng WANG; Yi ZHENG; Xi YANG

    2008-01-01

    Based on the design principles of economic rationality and safety, multiple-pivot pile anchorage approach was used as the supporting engineering of a tall building with a deep foundation ditch. The designs, such as anchor arm, single pile and the whole, were set up in accordance with the calculations of the internal force from the equivalent beam and Yamagata Kunio methods. Moreover, the rationality of the design was estimated using the stability checks. FLAC3D was used for calculating the accuracy of the design. Using FLAC3D to simulating ditch cutting and supporting processes can obtain the equivalent results as the theory analysis in the displacement of ditch surrounding wall, the stress field and stress distribution.

  4. Evaluation of a programme to support foundation-phase teachers to facilitate literacy

    Directory of Open Access Journals (Sweden)

    Anna-Maria Wium

    2011-12-01

    Full Text Available Learners who do not develop adequate listening and language skills during their early years are at risk of academic failure and early drop-out. Future learning problems may be prevented by supporting these children in the foundation phase to overcome their developmental delays. A continued professional development (CPD programme was developed to support foundation-phase teachers to facilitate literacy. The theoretical basis for the workshop material was the articulation between an auditory processing model, a language processing model, and literacy. The focus of this article is on the qualitative findings obtained from the literacy component of a more comprehensive CPD programme that covered several topics. The research was conducted as action research cycles across two contexts (a semi-rural and an urban-township context and included 96 participants. This article explores how the teachers implemented the strategies to facilitate literacy in their classrooms and the benefits obtained from it. Data were collected by means of questionnaires, self-reflections and focus groups, as well as a research diary and field notes. The results revealed that the strategies trained were implemented in the classrooms and were valued by the participants. Those who participated in critical reflection felt that they had developed competence and professional growth. Challenges identified included the language used in the support provided, which had an impact on phonological awareness training, and the use of terminology. The importance of collaboration was emphasised. The participants gained in the sense that they learnt how to implement the assessment standards in the curriculum, and learners benefited from the new strategies as they could all participate in the activities. The research confirmed the value of teacher support in the facilitation of literacy, which highlights the role of speech-language therapists working in school contexts.

  5. Supported cobalt catalysts - preparation, characterization and reaction studies

    OpenAIRE

    Backman, Leif

    2009-01-01

    The aim of this work was to understand on the effect of thermal treatments, precursor and support on the interaction between the support and cobalt species, and further how the interaction affects the reducibility and dispersion of the catalyst. Silica and alumina supported cobalt catalysts were prepared, characterised and tested for catalytic activity. The catalysts were prepared by gas phase deposition techniques from cobalt acetylacetonate and cobalt carbonyl and by incipient wetness impre...

  6. Advancing Earth System Science Literacy and Preparing the Future Geoscience Workforce Through Strategic Investments at the National Science Foundation (Invited)

    Science.gov (United States)

    Karsten, J. L.; Patino, L. C.; Rom, E. L.; Weiler, C. S.

    2010-12-01

    The National Science Foundation (NSF) is an independent federal agency created 60 years ago by the U.S. Congress "to promote the progress of science; to advance the national health, prosperity, and welfare; to secure the national defense…" NSF is the primary funding agency in the U.S. to support basic, frontier research across all fields in science, engineering, and education, except for medical sciences. With a FY 2011 budget request of more than $955 million, the NSF Directorate for Geosciences (GEO) is the principle source of federal funding for university-based fundamental research in the geosciences and preparation of the next generation of geoscientists. Since its inception, GEO has supported the education and training of a diverse and talented pool of future scientists, engineers, and technicians in the Earth, Ocean, Atmospheric and Geospatial Sciences sub-fields, through support of graduate research assistants, post-doctoral fellows, and undergraduate research experiences. In the late 1990’s and early 2000’s, GEO initiated several programs that expanded these investments to also support improvements in pre-college and undergraduate geoscience education through a variety of mechanisms (e.g., professional development support for K-12 teachers, development of innovative undergraduate curricula, and scientist-mentored research experiences for elementary and secondary students). In addition to GEO’s Geoscience Education (GeoEd), Opportunities for Enhancing Diversity in the Geosciences (OEDG), Global Learning and Observations to Benefit the Environment (GLOBE), and Geoscience Teacher Training (GEO-Teach) programs, GEO participates in a number of cross-Foundation programs, including the Research Experiences for Undergraduates (REU), Integrative Graduate Education and Research Traineeship (IGERT), Ethics Education in Science and Engineering (EESE), NSF Graduate STEM Fellows in K-12 Education (GK-12), and Partnerships for International Research and Education

  7. Supporting Children's Thinking in the Foundation Stage: Practitioners' Views on the Role of Initial Training and Continuing Professional Development

    Science.gov (United States)

    Robson, Sue

    2006-01-01

    The English "Curriculum Guidance for the Foundation Stage" refers to the importance of supporting the development of young children's thinking, a teaching role that Kite suggests should be seen as the major focus for education. This paper draws on data from the Froebel Research Fellowship Project, "Ownership and Autonomy in Early…

  8. Settlement Prediction of Road Soft Foundation Using a Support Vector Machine (SVM Based on Measured Data

    Directory of Open Access Journals (Sweden)

    Yu Huiling

    2016-01-01

    Full Text Available The suppor1t vector machine (SVM is a relatively new artificial intelligence technique which is increasingly being applied to geotechnical problems and is yielding encouraging results. SVM is a new machine learning method based on the statistical learning theory. A case study based on road foundation engineering project shows that the forecast results are in good agreement with the measured data. The SVM model is also compared with BP artificial neural network model and traditional hyperbola method. The prediction results indicate that the SVM model has a better prediction ability than BP neural network model and hyperbola method. Therefore, settlement prediction based on SVM model can reflect actual settlement process more correctly. The results indicate that it is effective and feasible to use this method and the nonlinear mapping relation between foundation settlement and its influence factor can be expressed well. It will provide a new method to predict foundation settlement.

  9. Emerging Risk Identification Support : Preparing for present and future hazards

    NARCIS (Netherlands)

    Zandvoort, M.M.J. van

    2013-01-01

    Food and feed companies need to be well-prepared for hazards resulting from their products and production processes. TNO has developed a unique Emerging Risk Identification Support service (ERIS ) that identifies new and unexpected hazards and helps stakeholders make well-considered decisions at an

  10. Emerging Risk Identification Support : Preparing for present and future hazards

    NARCIS (Netherlands)

    Zandvoort, M.M.J. van

    2013-01-01

    Food and feed companies need to be well-prepared for hazards resulting from their products and production processes. TNO has developed a unique Emerging Risk Identification Support service (ERIS ) that identifies new and unexpected hazards and helps stakeholders make well-considered decisions at an

  11. Preparation of soluble and insoluble polymer supported IBX reagents.

    Science.gov (United States)

    Reed, Neal N; Delgado, Mercedes; Hereford, Kristina; Clapham, Bruce; Janda, Kim D

    2002-08-05

    A series of soluble and insoluble polymer supported versions of the versatile oxidizing reagent IBX has been prepared. Each of the reagents were evaluated for their efficiency in the conversion of benzyl alcohol to benzaldehyde. Results from this study were that the soluble, non-crosslinked polystyrene supported IBX reagent gave the best rate of conversion to benzaldehyde, while the macroporous polymer supported IBX resin provided a superior rate of conversion to benzaldehyde when compared with a gel type resin. The macroporous IBX reagent was also shown to convert a series of alcohols to the corresponding aldehydes and ketones.

  12. Nonlinear dynamic analysis of damaged Reddy-Bickford beams supported on an elastic Pasternak foundation

    Science.gov (United States)

    Stojanović, Vladimir; Petković, Marko D.

    2016-12-01

    Geometrically nonlinear free and forced vibrations of damaged high order shear deformable beams resting on a nonlinear Pasternak foundation are investigated in this paper. Equations of motion are derived for the beam which is under subjected combined action of arbitrarily distributed or concentrated transverse loading as well as axial loading. To account for shear deformations, the concept of high order shear deformation is used in comparison with the concept of first order shear deformation theory. Analyses are performed to investigate the effects of the specific stiffness of the foundation on the damaged beam frequencies and displacements with the aim of equalising the response of a damaged and an intact beam. According to that, functions of the foundation stiffness are determined depending on the location and size of the damage as a result of the possibility for the damaged beam to behave like one that is intact. An advanced p-version of the finite element method is developed for geometrically nonlinear vibrations of damaged Reddy-Bickford beams. The present study gives a clear view of the nonlinear dynamical behaviour of four types of beams according to high order shear deformation theory - an intact beam, a damaged beam, a damaged beam on an elastic foundation and intact beam on elastic foundation. The paper also presents the derivation of a new set of two nonlinear partial differential equations where only the transverse and axial displacements figure. The forced nonlinear vibrations problem is solved in the time domain using the Newmark integration method. Free vibration analysis carried out by harmonic balance and the use of continuation methods and backbone curves are constructed.

  13. GREEN QUASIFUNCTION METHOD FOR FREE VIBRATION OF SIMPLY-SUPPORTED TRAPEZOIDAL SHALLOW SPHERICAL SHELL ON WINKLER FOUNDATION

    Institute of Scientific and Technical Information of China (English)

    Shanqing Li; Hong Yuan

    2010-01-01

    The idea of Green quasifunction method is clarified in detail by considering a free vibration problem of simply-supported trapezoidal shallow spherical shell on Winkler foundation.A Green quasifunction is established by using the fundamental solution and boundary equation of the problem.This function satisfies the homogeneous boundary condition of the problem.The mode shape differential equation of the free vibration problem of simply-supported trapezoidal shallow spherical shell on Winkler foundation is reduced to two simultaneous Fredholm integral equations of the second kind by Green formula.There are multiple choices for the normalized boundary equation.Based on a chosen normalized boundary equation,the irregularity of the kernel of integral equations is avoided.Finally,natural frequency is obtained by the condition that there exists a nontrivial solution in the numerically discrete algebraic equations derived from the integral equations.Numerical results show high accuracy of the Green quasi function method.

  14. Geometric nonlinear free vibration of axially functionally graded non-uniform beams supported on elastic foundation

    Science.gov (United States)

    Lohar, Hareram; Mitra, Anirban; Sahoo, Sarmila

    2016-09-01

    In the present study non-linear free vibration analysis is performed on a tapered Axially Functionally Graded (AFG) beam resting on an elastic foundation with different boundary conditions. Firstly the static problem is carried out through an iterative scheme using a relaxation parameter and later on the subsequent dynamic problem is solved as a standard eigen value problem. Minimum potential energy principle is used for the formulation of the static problem whereas for the dynamic problem Hamilton's principle is utilized. The free vibrational frequencies are tabulated for different taper profile, taper parameter and foundation stiffness. The dynamic behaviour of the system is presented in the form of backbone curves in dimensionless frequency-amplitude plane.

  15. Supporting Geoscience Students at Two-Year Colleges: Career Preparation and Academic Success

    Science.gov (United States)

    McDaris, J. R.; Kirk, K. B.; Layou, K.; Macdonald, H.; Baer, E. M.; Blodgett, R. H.; Hodder, J.

    2013-12-01

    Two-year colleges play an important role in developing a competent and creative geoscience workforce, teaching science to pre-service K-12 teachers, producing earth-science literate citizens, and providing a foundation for broadening participation in the geosciences. The Supporting and Advancing Geoscience Education in Two-Year Colleges (SAGE 2YC) project has developed web resources for geoscience faculty on the preparation and support of students in two-year colleges (2YCs). Online resources developed from two topical workshops and several national, regional, and local workshops around the country focus on two main categories: Career Preparation and Workforce Development, and Supporting Student Success in Geoscience at Two-year Colleges. The Career Preparation and Workforce Development resources were developed to help faculty make the case that careers in the geosciences provide a range of possibilities for students and to support preparation for the geoscience workforce and for transfer to four-year programs as geoscience majors. Many two-year college students are unaware of geoscience career opportunities and these materials help illuminate possible futures for them. Resources include an overview of what geoscientists do; profiles of possible careers along with the preparation necessary to qualify for them; geoscience employer perspectives about jobs and the knowledge, skills, abilities and attitudes they are looking for in their employees; employment trends in sectors of the economy that employ geoscience professionals; examples of geotechnician workforce programs (e.g. Advanced Technological Education Centers, environmental technology programs, marine technician programs); and career resources available from professional societies. The website also provides information to support student recruitment into the geosciences and facilitate student transfer to geoscience programs at four- year colleges and universities, including sections on advising support before

  16. Preparation of supported electrocatalyst comprising multiwalled carbon nanotubes

    Science.gov (United States)

    Wu, Gang; Zelenay, Piotr

    2013-08-27

    A process for preparing a durable non-precious metal oxygen reduction electrocatalyst involves heat treatment of a ball-milled mixture of polyaniline and multiwalled carbon nanotubes in the presence of a Fe species. The catalyst is more durable than catalysts that use carbon black supports. Performance degradation was minimal or absent after 500 hours of operation at constant cell voltage of 0.40 V.

  17. Teacher Preparation: Assessing Teacher Quality, Administrative Support, Standards-Based Teacher Preparation.

    Science.gov (United States)

    Poliakoff, Anne Rogers, Ed.

    2002-01-01

    This collection of papers focuses on the preparation of teachers by university-based education programs. The papers are: "The STEPS That Support P-12 Learning and Achievement" (Diana Rigden), which describes the Standards-based Teacher Education Project (STEP) for improving student learning; "The Responsibility for Assessing Beginning Teachers"…

  18. Preparation and Characterization of Sugar Based Catalyst on Various Supports

    Directory of Open Access Journals (Sweden)

    Jidon Adrian Janaun

    2017-04-01

    Full Text Available A novel structured carbon-based acid catalyst was prepared by depositing the carbon precursor onto glass, ceramic and aluminum supports via dip-coating method, followed by carbonization process for converting the d-glucose layer into black carbon char in an inert nitrogen environment at 400 °C. Then, the –SO3H group was introduced into the framework of the carbon char by multiple vapor phase sulfonation. Four different carbonization methods were carried out (dry pyrolysis and hydrothermal carbonization with or without pressurized in the catalyst preparation while among the carbonization methods, the samples which prepared from dry pyrolysis without pressurized process showed the strong acidity due to highest adsorption of acid group in the catalyst surface although the catalyst attached onto the support was the least compared to other preparation methods. Among the catalysts, the sulfonated carbon-base catalyst that is attached on the ceramic support exhibited the highest aci-dity (1.327 mmol/g followed by the catalyst deposited on the glass (0.917 mmol/g and aluminum (0.321 mmol/g supports. The porous structure of ceramic surface, allowed a better interaction between reactants and –SO3H site in the carbon. Through the FT-IR analysis, it was observed that the functional groups –COOH, –OH, and –SO3H were present in the active sites of the catalysts. The surface areas of  glass (Si–SC, ceramic (Ce–SC and aluminum (Al–SC catalysts were larger than 1 m2/g, whereas the pore size belongs to macroporous as the average pore size is more than 50 nm. It is also stable within the temperature of 400 °C as there was less than 10% weight loss revealed from the TGA analysis. Copyright © 2017 BCREC GROUP. All rights reserved Received: 20th April 2016; Revised: 14th October 2016; Accepted: 17th October 2016 How to Cite: Janaun, J.A., Mey, T.J., Bono, A., Krishnaiah, D. (2017. Preparation and Characterization of Sugar Based Catalyst on Various

  19. Speech-language therapists supporting foundation-phase teachers with literacy and numeracy in a rural and township context.

    Science.gov (United States)

    Wium, Anna-Marie; Louw, Brenda; Eloff, Irma

    2010-12-01

    Language is required for learning, but educators often find it difficult to facilitate listening and language skills while they have to adapt to a new national curriculum with an outcomes-based approach for which they have not necessarily been adequately trained. A multifaceted support programme was developed for foundation-phase educators to facilitate listening and language for literacy and numeracy, with a particular focus on language for numeracy. The aim of the research was to determine the value of this particular support programme for foundation-phase educators in two different contexts (a semi-rural and a township context). A mixed methods approach with a concurrent, equal status triangulation design was used, where qualitative data were transformed to quantitative data in order to be compared in a matrix. The results show that the participants benefited to varying degrees from the programme. The combination of workshops, practical and mentoring components proved to be an effective means of support. The results indicate a need for pre-training selection procedures as more effective support can be provided to homogeneous groups.

  20. What We Stand "For", Not "Against": Presenting Our Teacher Education Colleagues with the Case for Social Foundations in PK-12 Teacher Preparation Programs

    Science.gov (United States)

    Hartlep, Nicholas D.; Porfilio, Bradley J.; Otto, Stacy; O'Brien, Kathleen

    2015-01-01

    Social Foundations of Education (SFE) courses play a critical role in preparing professional, effective PK-12 teachers, yet, for reasons argued in this article and elsewhere, such courses remain under attack. In this article, by arguing what SFE "stands for" as opposed to what it "stands against," the authors intend to…

  1. Health system and societal barriers for gestational diabetes mellitus (GDM) services - lessons from World Diabetes Foundation supported GDM projects

    DEFF Research Database (Denmark)

    Nielsen, Karoline Kragelund; de Courten, Maximilian; Kapur, Anil

    2012-01-01

    for the offspring. A better understanding of the barriers hindering detection and treatment of GDM is needed. Based on experiences from World Diabetes Foundation (WDF) supported GDM projects this paper seeks to investigate societal and health system barriers to such efforts. Methods Questionnaires were filled out...... by 10 WDF supported GDM project partners implementing projects in eight different LMIC. In addition, interviews were conducted with the project partners. The interviews were analysed using content analysis. Results Barriers to improving maternal health related to GDM nominated by project implementers...... included lack of trained health care providers - especially female doctors; high staff turnover; lack of standard protocols, consumables and equipment; financing of health services and treatment; lack of or poor referral systems, feedback mechanisms and follow-up systems; distance to health facility...

  2. Challenges in sustaining the Million Book Project,a project supported by the National Science Foundation

    Institute of Scientific and Technical Information of China (English)

    Gloriana St.CLAIR

    2010-01-01

    @@ One of the main roles I have played as a director of the Universal Digital Library has been to write grant proposals to support our work.Both for this project and for another project,Oiive.org,an archive of executable content,how to sustain the final product is the most difficult challenge.

  3. Teacher support - an exploration of how foundation-phase teachers facilitate language skills

    Directory of Open Access Journals (Sweden)

    Anna-Maria Wium

    2011-12-01

    Full Text Available The role of speech-language therapists (SLTs has been redefined by White Paper 6, which emphasises the role of support to both teachers and learners. SLTs have expert knowledge and skills pertaining to communication and language, and therefore have much to contribute to the process of learning in teaching. This article builds on a previous article published in the 2010 edition of the journal, which reported on the process of supporting teachers to facilitate listening, language and numeracy skills in semi-rural and urban (township contexts. In this follow-up article the focus is on the qualitative findings obtained from a specific section of the larger study. Where the overall study made use of a mixed methods approach to evaluate the process of providing support, and reported on the entire continued professional development (CPD programme, this article focuses specifically on the qualitative data collected when the CPD programme addressed the facilitation of language. This article explores how the strategies were used in the classrooms, and the benefits of the support provided. The data discussed in this article were obtained from questionnaires, focus groups, and critical self-evaluation by teachers, as well as a research diary used by the programme facilitator. The results show that both the participants and their learners benefited from the support provided. The participants reportedly for the first time were able to meet curriculum outcomes which previously had been omitted, and showed an increased ability to plan their lessons. Several teachers experienced changes in their teaching practices and could reflect on their practices, which contributed to their professional development. These teachers became more empowered. Learning in the classroom was enhanced through increased participation of all learners, and enjoyment of the strategies.

  4. Foundations for context-aware information retrieval for proactive decision support

    Science.gov (United States)

    Mittu, Ranjeev; Lin, Jessica; Li, Qingzhe; Gao, Yifeng; Rangwala, Huzefa; Shargo, Peter; Robinson, Joshua; Rose, Carolyn; Tunison, Paul; Turek, Matt; Thomas, Stephen; Hanselman, Phil

    2016-05-01

    Intelligence analysts and military decision makers are faced with an onslaught of information. From the now ubiquitous presence of intelligence, surveillance, and reconnaissance (ISR) platforms providing large volumes of sensor data, to vast amounts of open source data in the form of news reports, blog postings, or social media postings, the amount of information available to a modern decision maker is staggering. Whether tasked with leading a military campaign or providing support for a humanitarian mission, being able to make sense of all the information available is a challenge. Due to the volume and velocity of this data, automated tools are required to help support reasoned, human decisions. In this paper we describe several automated techniques that are targeted at supporting decision making. Our approaches include modeling the kinematics of moving targets as motifs; developing normalcy models and detecting anomalies in kinematic data; automatically classifying the roles of users in social media; and modeling geo-spatial regions based on the behavior that takes place in them. These techniques cover a wide-range of potential decision maker needs.

  5. Projects of Earth Sciences Supported by National Natural Science Foundation of China

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    Program Code\tProgram Title\tProgram Leader 40001001\tApplication of Caesium-137 Tracing Technique on the Wind Erosion\tYAN Ping 40001002\tSpatial Adjustment to Coordinate Regional Development and Environment Protection in the Liaohe Delta\tLI Xiuzhen 40001003\tHistorical Soil Erosion Changes of the Loess Plateau Inverted from Silt-accumulation in the Huanghe Alluvial Fan\tTAN Lihua 40001004\tOn the Study of Rock Cryogenic Weathering Processes and Mechanism in the Continental Periglacial Zone\tZHU Liping 40001005\tFeedback Mechanism Between the Near Surface Blown Sand Cloud and Wind Profiles\tDONG Zhibao 40001006\tDynamics of Regional and Urban Structure with High-speed Rail Effects\tXU Yilun 40001007\tResearch on Urban and Regional Governance of China's Urban Agglomeration Area-Case Study of Southern Jiangsu Region\tZHANG Jing-xiang 40001008\tStudies on Interpretation in Soil Remote Sensing Supported by Soil Spatial Variation and Landscape Modeling\tSHI Zhou 40001009\tStudy on the Physicochemical Property and Its Utilization Specification of Bentonite in North China\tMA Bei-yan 40001010\tEffects of Rewetting and Root Signal ABA on Root Hydraulic Conductivity of Wheat\tLI Yang-yang 40001011\tRock Weathering Induced by Lichens in Antarctica and Its Significance in Soil Genesis\tCHEN Jie 40001012\tStudy on the Inorganic Nanoparticles in Soils\tWU Jing-gui 40001013\tMechanism and Environmental Risk of Chelate Enhancement for Hyperaccumulator Remediation of Cu Polluted Soil\tWU Long-hua 40001014\tStudy on Hydraulics of Soil Erosion by Overland Flow\tZHANG Guang-hui 40001015\tInferring Snow Parameters Using Polarimetric and Interferometric Synthetic Aperture Radar Data\tLI Zhen 40001016\tThe Study of Spatio-temperal Model of Surface Slick Seeped from Offshore Oil and Gas Reservoirs\tHUANG Xiao-xia 40001017\tIntegration Method of Multitype Huge Spatial Database\tZHU Qing 40001018\tTIN Based Global Image Matching and Three Dimensional Surface Reconstruction\tJIANG Wan

  6. A Foundation for Vital Academic and Social Support in Clerkships: Learning Through Peer Continuity.

    Science.gov (United States)

    Chou, Calvin L; Teherani, Arianne

    2017-07-01

    Most medical students on clerkships currently experience lack of continuity of patient care, disjointed learning, and frequent changes in supervisors. Clerkship programs with continuity of care, curriculum, and supervisors appear to benefit student learning and patient-centeredness. A fourth form of continuity is proposed: continuity of peers, in which a stable cohort of students frequently meets to process their experiences on clerkships. This structure builds on benefits previously seen in peer-assisted learning, including enhanced knowledge, technical skills, and collegial peer relationships. Additional advantages of peer continuity in clerkships include facilitated integration into the workplace, social support, and enhanced clinical and professional learning. Practical components required for a successful peer continuity structure include intentional formation of peer cohorts; regular meetings that cover didactic or clinical skills learning; frequent opportunities for reflection on patient care, professional development, and well-being; and skilled facilitators without evaluative roles. Theoretical support for peer continuity comes from social cognitive theory, communities of clinical practice, and social comparison theory. Therefore, in conjunction with empirical programs that have shown benefits of developing these structures, peer continuity should become a formalized educational structure in clerkships.

  7. 深基坑支护施工技术在基础施工中的应用分析%The Application Analysis of Deep Foundation Pit Support Construction Technology in Foundation Construction

    Institute of Scientific and Technical Information of China (English)

    赵素艳

    2014-01-01

    The construction technology of deep foundation pit is a very important technology in foundation construction, thr-ough the investigation of the site geological conditions and ge-ographical environment, this paper puts forward some impor-tant application procedures and announcements protection mo-de of deep foundation pit construction, can make the applica-tion of deep foundation pit supporting construction technology in foundation construction more clearly.%深基坑支护施工技术在基础施工建设中是非常重要的技术,本文通过对现场地质条件和地理环境的调查,提出深基坑建设一些重要的应用程序和注意事项的保护模式,可以使基础施工的深基坑支护施工技术应用更清晰。

  8. On solution scheme for foundation pit support adjacent to buildings with shallow foundation%紧邻浅基础建筑的基坑支护整体解决方案

    Institute of Scientific and Technical Information of China (English)

    郭莉

    2016-01-01

    结合天津市某工程的周边环境及水文地质条件,分析了该工程紧邻浅基础建筑的基坑支护设计难点,从支护方案选型、支护结构变形控制、止水措施、土方开挖等方面,提出了具体的基坑支护方案,确保了该项目周边环境的安全性。%Combining with the surrounding environment and hydraulic geological conditions of some project in Tianjin,the paper analyzes the de-sign difficulties in the foundation pit support in the project adjacent to buildings with shallow foundation,and points out the foundation pit support scheme from the support scheme selection,deformation control of support structure,waterproof measure,and civil excavation,so as to ensure the safety of the surrounding environment.

  9. The New Forgotten Half and Research Directions to Support Them. A William T. Grant Foundation Inequality Paper

    Science.gov (United States)

    Rosenbaum, James; Ahearn, Caitlin; Becker, Kelly; Rosenbaum, Janet

    2015-01-01

    In 1988, the William T. Grant Foundation issued "The Forgotten Half," the final report of the Foundation's Commission on Youth and America's Future. Focusing on inequality in American society, specifically among non-college-bound 16-24 year olds, the report explored the challenges facing young people and the institutions that serve them.…

  10. Systems in the Foundations of Information Systems Course to Retain Students and to Support the IS 2010 Model Curricula

    Science.gov (United States)

    Slauson, Gayla Jo; Carpenter, Donald; Snyder, Johnny

    2011-01-01

    Systems in the Foundations of Information Systems course can be used to connect with students in computer information systems programs; a systematic approach to beginning student relationship management in this course is helpful. The authors suggest that four systems be created in the Foundations Course. These theoretical systems include an…

  11. The Control of Ground Surface Settlement in the Design of Foundation Pit Supporting around Shallow Foundation Buildings%浅基础建筑物相邻的基坑支护设计中地表变形控制

    Institute of Scientific and Technical Information of China (English)

    刘立东

    2012-01-01

    Through analyzing the effect of the design of one deep foundation pit supporting project on peripheral six-layer shallow foundation building in Yancheng city, in the accordance with the relevant existing national engineering codes, this paper considered the deformation of both soil and buildings a- round the foundation pit, and explored how to calculate and control the ground surface settlement around the foundation pit in order to ensure the safety of the surrounding buildings and meanwhile achieve opti- mal economic results.%通过对盐城一深基坑支护设计对周边六层浅基础建筑的影响分析,结合现有相关的国家规范,从基坑周边土体和建筑物变形两个方面综合分析,阐述了深基坑设计过程中,如何对支护周边地表沉降进行计算控制,以保证周边建筑物的安全,同时取得最优经济效益。

  12. Chemical Preparation of Supported Bimetallic Catalysts. Gold-Based Bimetallic, a Case Study

    OpenAIRE

    Louis, Catherine

    2016-01-01

    International audience; This review focuses on the chemical methods used to prepare supported bimetallic heterogeneous catalysts, i.e., bimetallic nanoparticles deposited on a support. The review is limited to the preparation of gold-based bimetallic catalysts and moreover to bimetallic nanoparticles supported on powder inorganic supports, i.e., on the surface or in the porosity, and not on model supports such as single crystals.

  13. Research data supporting "A multicomponent approach for the preparation of homoallylic alcohols"

    OpenAIRE

    Poh, Jian-Siang; Lau, Shing-Hing; Dykes, Iain; Tran, Duc N.; Battilocchio, Claudio; Ley, Steven V

    2016-01-01

    This data contains a .zip file of the NMR spectra for the compounds (in .mnova format, to be opened in MestReNova) described in the Supporting Information. It also contains a .pdf copy of the Supporting Information, which contains the experimental details and full characterisation data (NMR, IR, HRMS) of all compounds produced in this publication. EPSRC [EP/K0099494/1 and EP/K039520/1] Cambridge Home and EU Scholarship Scheme Croucher Foundation, Swiss National Science Foundation ...

  14. An audit of cavity and crown preparations and two direct restorations carried out by foundation dentists in the Oxford and Wessex Deaneries.

    Science.gov (United States)

    Burke, F J T; Mackenzie, L; Falcon, H; Priest, N; Palin, W M

    2014-04-01

    It is likely that many foundation dentists (FDs) will have completed only minimal amounts of restorative dentistry for a number of months immediately prior to commencing work as FDs. Thus this audit aimed to assess the performance of the FDs when they carried out a number of simulated clinical exercises: amalgam cavities and restoration; Class IV resin composite restorations; and full crown preparations for metal-ceramic restorations. A total of 67 FDs completed the assessments and some results did indicate a high level of concern and need for further evaluation of restorative practice.

  15. Foundation Networks and American Hegemony

    Directory of Open Access Journals (Sweden)

    Inderjeet Parmar

    2012-02-01

    Full Text Available The major American foundations constructed and sustained the rich texture of cooperative social, intellectual and political relations between key actors and institutions supportive of specific modes of thought that promoted US hegemony. Foundations also fostered and developed the attractive power-knowledge networks that not only radiated intellectual influence but also attracted some of the most creative minds. Finally, liberal internationalist foundations fostered globalism even when the American state was ‘isolationist’, and when US influence abroad unwelcome. Their significance in American hegemony building lay in their sustained, long-term cooperative relationship with the American state through which they helped build national, international and global institutions and networks. The latter process evidences the most significant impact of US foundations – the building of the domestic and international infrastructure for liberal internationalism which has transformed into a kind of “social neoliberalism”. Theoretical conclusions follow from these claims: the sustained and deep cooperation between the state and foundations suggests that we must revise our views of “how power works” in the United States and therefore influences its foreign relations. Therefore, the article shows that elite networks, consisting of state officials and private citizens are powerful means by which foreign policy shifts may be prepared, elite and mass opinion primed and mobilised, new consensus built, ‘old’ forces marginalised, and US hegemony constructed.

  16. Disaster prepared: How federal funding in the USA supports health system and public health readiness.

    Science.gov (United States)

    Schlegelmilch, Jeff; Petkova, Elisaveta; Redlener, Irwin

    Federal funding for health and medical preparedness in the USA has created an important foundation for preparing the health and medical systems to respond to a wide range of hazards. A declining trend in funding for these preparedness activities threatens to undo the progress that has been made over the last decade and reduce the state of readiness to respond to the health and medical impacts of disasters.

  17. Effects of Mind Map Supported Cognitive Preparation on Expository Writing

    Directory of Open Access Journals (Sweden)

    H. Ömer BEYDOĞAN

    2011-12-01

    Full Text Available Written expression, due to the uncertainties and difficulties is a problem for an individual. The individual is expected to conduct cognitive preparation to overcome this problem. In present study written expression skill differentiations in students who are, prior to written expression performance, assisted cognitively via activities like brain storming, clustering and mind map have been analyzed. To that end randomly selected 64 freshmen students from Faculty of Education have composed the research sampling. In this research pre-test and post-test model centered experiment and control groups have been utilized. Data have been obtained from “Written Expression Evaluation Scale” developed by the researcher. In data analysis arithmetical means, standard deviation, Manova and t test technique have been used. It has been determined that experiment group students who, prior to written expression performance, conducted cognitive preparations via activities such as free writing, brain storming, clustering and mind map have created, in certain dimensions of the scale, better explanatory writing texts than the students in control group. Within the framework of obtained data, certain suggestions on mental preparation prior to written expression have been presented.

  18. Influence of pile–soil interaction on the dynamic properties of offshore wind turbines supported by jacket foundations

    DEFF Research Database (Denmark)

    Yi, Jin-Hak; Kim, Sun-Bin; Yoon, Gil-Lim;

    2015-01-01

    are conventionally used in the oil and gas industry. However, there are still several issues unsolved for utilization of jacket structures for OWTs including pile–soil-interaction (PSI) effects, dynamically stable design, installation, and so on. In this study,the effects of pile–soil interaction on the dynamic...... properties of jacketsupported OWTs are investigated. The jacket structure is modeled as a four-legged multi-member structure with vertical pre-piles, and the PSI effects on dynamic properties of the structure are evaluated using Monte Carlo simulation considering uncertainties in soil properties.......Monopiles are the most widely utilized foundation for offshore wind turbines (OWTs) in shallow waters. However, jacket-type foundations are being considered as one of the good alternatives to monopole foundations for relatively deep water in the range of 25–50 m of water depth. Jacket structures...

  19. [Preparation and structural analysis of diatomite-supported SPFS flocculant].

    Science.gov (United States)

    Zheng, Huai-li; Fang, Hui-li; Jiang, Shao-jie; Yang, Chun; Ma, Jiang-ya; Zhang, Zhao-qing

    2011-07-01

    In the presetn study, polymerized ferric sulphate (PFS) flocculant was prepared and tested. In the preparation of PFS flocculant, industrial by-product ferrous sulfate heptahydrate (FeSO4.7H2O) was reused as the main material. By composition with diatomite and drying up at certain temperature in vacuum drying oven, solid PFS flocculant was produced. Structural characteristics of the new flocculant product were examined through infrared spectroscopy and scanning electron microscopy (SEM), which showed that by compositing with diatomite, new group bridging emerged in the structure of PFS, which made the bond of groups stronger. In addition, part of the metalic contents in diatomite was polymerized with PFS, the product of which was polymerized ferric complex. Furthermore, the absorbing and agglomerating capacity of the diatomite carrier was significant. Considering the factors listed above, the new solid polymerized ferric sulphate (SPFS) flocculant was characterized with a larger molecule structure and enhanced absorbing, bridging and rolling sweep capacities. Through orthogonal experiment, optimum conditions of synthesis were as follows: the ratio of FeSO4.7H2O/diatomite in weight was 43/1, the reaction time is 1 h and the reaction temperature is 55 degrees C. By wastewater treatment experiment, it was found that the synthetic products showed good flocculation performance in the treatment of domestic sewage, the removal of COD was 80.00% and the removal of turbidity was 99.98%.

  20. Ordered mesoporous materials as model supports to study catalyst preparation

    NARCIS (Netherlands)

    Sietsma, J.R.A.

    2007-01-01

    Catalysts are indispensable to modern-day society because of their prominent role in petroleum refining, chemical processing, and the reduction of environmental pollution. The catalytically active component often consists of small metal (oxide) particles that are supported on a carrier such as silic

  1. Preparation and photoactivity of thermosensitive polymer supported metallophthalocyanine

    Institute of Scientific and Technical Information of China (English)

    CHEN WenXing; LIU Fan; LV WangYang; SHEN XiaoYuan; YAO YuYuan XU MinHong

    2008-01-01

    A novel reactive rnetallophthalocyanine derivative, zinc tetra(2,4-dichloro-1,3,5-triazine)arninophthalo-cyanine (Zn-TDTAPc), was prepared and immobilized on poly(N-isopropylacrylarnide) (PNIPAArn) by covalent bonding to obtain a therrnosensitive polymer (Zn-TDTAPc-g-PNIPAAm). Compared with zinc tetraaminophthalocyanine (Zn-TAPc), Zn-TDTAPc-g-PNIPAArn exhibits excellent solubility in water and in most organic solvents. Furthermore, it has a special therrnosensitive property in water and the lower critical solution temperature (LCST) is 34.1℃. It was found that both dissolved and precipitated Zn-TDTAPc-g-PNIPAArn present high photoactivity evidenced by the experiment of photocatalytic degra-dation of 1, 3-diphenylisobenzofuran (DPBF) in the presence of Zn-TDTAPc-g-PNIPAArn. These proper-ties suggest that it can be used potentially in photodynarnic therapy (PDT).

  2. Preparation and photoactivity of thermosensitive polymer supported metallophthalocyanine

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    A novel reactive metallophthalocyanine derivative,zinc tetra(2,4-dichloro-1,3,5-triazine)aminophthalo-cyanine(Zn-TDTAPc),was prepared and immobilized on poly(N-isopropylacrylamide)(PNIPAAm) by covalent bonding to obtain a thermosensitive polymer(Zn-TDTAPc-g-PNIPAAm).Compared with zinc tetraaminophthalocyanine(Zn-TAPc),Zn-TDTAPc-g-PNIPAAm exhibits excellent solubility in water and in most organic solvents.Furthermore,it has a special thermosensitive property in water and the lower critical solution temperature(LCST) is 34.1℃.It was found that both dissolved and precipitated Zn-TDTAPc-g-PNIPAAm present high photoactivity evidenced by the experiment of photocatalytic degra-dation of 1,3-diphenylisobenzofuran(DPBF) in the presence of Zn-TDTAPc-g-PNIPAAm.These proper-ties suggest that it can be used potentially in photodynamic therapy(PDT).

  3. Preparation and Catalytic Properties of Polymer Supported Dendritic Metal Complex

    Institute of Scientific and Technical Information of China (English)

    LI Cui-ling; YANG Zhi-wang; KANG Qiao-xiang; MA Heng-chang; MA Xiao-peng; GAO Qi-kuan; GUO Zhen; LEI Zi-qiang

    2004-01-01

    Polymer supported materials are extensively used as oxidizing agent, reducing agent catalysts, photosensitizers ion exchange resins and agriculturally and pharmacologically active agents1. The application of polymer metal complexes has been widely investigated2. The polymer supported complex undergoes swelling in a suitable solvent medium and provides enough surface area in carrying out electron transfer reactions, which clearly emphasizes the influence of a polymer network in heterogeneous catalysis.In the present, we have succeeded in the grafting of "dendrimer-like" hyperbranched polymer onto the surface of chloromethyl polystyrene reactions.All the catalysts show promising catalytic activities for the oxidation of iso-propylbenzene in the mild reaction condition, in each case, hypnone 1, 2-phenyl-2-propanol 2 were obtained as the major products

  4. 过程信息集成的分布式支撑平台%Distributed Support Foundation of Process Information Integration

    Institute of Scientific and Technical Information of China (English)

    李敏

    2000-01-01

    The object of process information integration and typical application are summarized. Based on analyzing the task of integrated foundation and at present foundation, a kind of process information distributed support foundation that mixed together the distributed component object technique, n-tiers C/S and traditional Internet is put forward. Finally, the application of this foundation in certain petroleum refinery is introduced.%首先概述了过程信息集成的目标和目前对过程信息的典型应用,然后在分析了集成平台的任务和现有平台的基础上,提出了一种融合了分布式构件对象技术、n-tiers C/S和传统Intranet的过程信息分布式支撑平台,最后介绍了该平台在某炼油企业的应用。

  5. Preparing Students with Disabilities in an Urban School for Success in Supported and Competitive Employment

    Science.gov (United States)

    Miller, Valerie S.

    2010-01-01

    In schools that serve students with varying disabilities, community-based education has become an important element in preparing students for competitive and supported employment. Because of the constant change in demographics and the overall competitiveness of the job market, it is essential that schools are prepared to find ways of infusing…

  6. Preparation and characterization of supported magnetic nanoparticles prepared by reverse micelles

    Directory of Open Access Journals (Sweden)

    Ulf Wiedwald

    2010-11-01

    Full Text Available Monatomic (Fe, Co and bimetallic (FePt and CoPt nanoparticles were prepared by exploiting the self-organization of precursor loaded reverse micelles. Achievements and limitations of the preparation approach are critically discussed. We show that self-assembled metallic nanoparticles can be prepared with diameters d = 2–12 nm and interparticle distances D = 20–140 nm on various substrates. Structural, electronic and magnetic properties of the particle arrays were characterized by several techniques to give a comprehensive view of the high quality of the method. For Co nanoparticles, it is demonstrated that magnetostatic interactions can be neglected for distances which are at least 6 times larger than the particle diameter. Focus is placed on FePt alloy nanoparticles which show a huge magnetic anisotropy in the L10 phase, however, this is still less by a factor of 3–4 when compared to the anisotropy of the bulk counterpart. A similar observation was also found for CoPt nanoparticles (NPs. These results are related to imperfect crystal structures as revealed by HRTEM as well as to compositional distributions of the prepared particles. Interestingly, the results demonstrate that the averaged effective magnetic anisotropy of FePt nanoparticles does not strongly depend on size. Consequently, magnetization stability should scale linearly with the volume of the NPs and give rise to a critical value for stability at ambient temperature. Indeed, for diameters above 6 nm such stability is observed for the current FePt and CoPt NPs. Finally, the long-term conservation of nanoparticles by Au photoseeding is presented.

  7. Restless Legs Syndrome Foundation

    Science.gov (United States)

    ... Into Relieved Are you experiencing symptoms linked to restless legs syndrome (RLS)? Find tools and support to help get ... I couldn’t sleep. Fortunately, I found the Restless Legs Syndrome Foundation and learned what type of doctor to ...

  8. Carcinoid Cancer Foundation

    Science.gov (United States)

    ... Assistance News Blog E-News Archives Contact Donate Carcinoid Cancer Foundation Navigation Home About Back Our Founder Mission ... FREQUENTLY ASKED QUESTIONS SUPPORT GROUPS The ABC's of Carcinoid and Neuroendocrine Tumors Three of the world’s leading ...

  9. 低碳环保型建筑基坑支护新技术%NewB uilding Foundation Pit Supporting technologies with Low carbon environmental protection

    Institute of Scientific and Technical Information of China (English)

    郑桂心

    2014-01-01

    Bamboo is a kind of renewable resources with characteristics of strong reproductive capacity , quick grown and short growth cy-cle.In this paper, a new foundation pit support technology of bamboo composite soil nailing wall which is low carbon environmental protec -tion was introduced.This technology has advantages of scientific and reasonable , green environmental protection , economy, safety, etc. And it has a broad application prospect which is a breakthrough of current soil nailing wall structure material and building concept .Its tech-nique detail is applying bamboo instead of steel soil nail in the foundation pit soil nail wall supporting structure and bamboo split net instead of steel fabric in surface concrete , so the bamboo piles at foundation pit slope foot and bamboo soil nailing together constitute the structure of composite soil nailing wall , can get reliable support of foundation pit .The article expounds on the supporting mechanism , numerical a-nalysis, calculation methods and engineering application of bamboo composite soil nailing wall foundation pit .%传统的土钉墙都是由高耗能高排放的水泥和钢筋构成。毛竹是一种可再生资源,具有抗拉强度高,短期强度相对稳定,长期强度逐渐降低。毛竹的这种特性,符合建筑基坑支护临时性特点。本文提出的低碳环保型毛竹复合土钉墙基坑支护技术,具有取材科学合理、绿色环保、经济、安全等优点,有着广阔的应用前景,是对现行土钉墙的结构用材和构筑理念上的重大突破。具体措施是,在基坑土钉墙支护结构中以毛竹取代了钢质土钉,面层砼中用竹篾网取代钢筋网,基坑坡脚的毛竹排桩与毛竹土钉连在一起构成复合土钉墙结构,能使基坑得到可靠的支护。文章详细阐述了毛竹复合土钉墙基坑支护机理、数值分析、计算方法及工程应用。

  10. Corporate Foundations

    DEFF Research Database (Denmark)

    Herlin, Heidi; Thusgaard Pedersen, Janni

    2013-01-01

    This paper aims to explore the potential of Danish corporate foundations as boundary organizations facilitating relationships between their founding companies and non-governmental organizations (NGOs). Hitherto, research has been silent about the role of corporate foundations in relation to cross......-sector partnerships. The results of this paper are based on interviews, participant observations, and organizational documents from a 19-month empirical study of a Danish corporate foundation. Findings suggest that corporate foundations have potential to act as boundary organizations and facilitate collaborative...... action between business and NGOs through convening, translation, collaboration, and mediation. Our study provides valuable insights into the tri-part relationship of company foundation NGO by discussing the implications of corporate foundations taking an active role in the realm of corporate social...

  11. Influence of preparation method on performance of a metal supported perovskite catalyst for combustion of methane

    Institute of Scientific and Technical Information of China (English)

    翟彦青; 熊杰明; 李翠清; 徐新; 罗国华

    2010-01-01

    A different method was employed for the preparation of a metal supported perovskite catalyst for the catalytic combustion of methane.The prepared metallic catalysts were characterized by means of X-ray diffractometer(XRD),scanning electron microscopy(SEM),transmission electron microscopy(TEM),and also by ultrasonic and thermal shock tests and catalytic activity.It was found that the process factors during the preparation,e.g.the preparation of the catalyst precursor and the coating slurry,the calcination te...

  12. Medical Student Use of Facebook to Support Preparation for Anatomy Assessments

    Science.gov (United States)

    Pickering, James D.; Bickerdike, Suzanne R.

    2017-01-01

    The use of Facebook to support students is an emerging area of educational research. This study explored how a Facebook Page could support Year 2 medical (MBChB) students in preparation for summative anatomy assessments and alleviate test anxiety. Overall, Facebook analytics revealed that in total 49 (19.8% of entire cohort) students posted a…

  13. A behaviorological thanatology: Foundations and implications

    Science.gov (United States)

    Fraley, Lawrence E.

    1998-01-01

    Foundation principles supporting a behaviorological thanatology are reviewed, including concepts of life, person, death, value, right, ethic, and body/person distinctions. These natural science foundations are contrasted with traditional foundations, and their respective implications are speculatively explored. PMID:22478293

  14. The Application of Deep Foundation Supporting Construction Technology in Civil Construction%关于深基坑支护施工技术在土建施工中应用的探究

    Institute of Scientific and Technical Information of China (English)

    林丽

    2013-01-01

    This paper comprehends the application of deep foundation supporting construction technology in civil construction through analyzing the characteristics of deep foundation supporting construction technology, and discusses the important role of deep foundation supporting construction technology in civil construction.%本文通过对深基坑支护施工技术的特点进行分析,了解深基坑支护技术在施工中的应用,并且探讨深基坑支护施工技术对土建施工中的重要作用。

  15. Scheme Design of the Deformation Monitoring in the Foundation Pit Supporting Project%浅谈基坑支护工程变形监测方案

    Institute of Scientific and Technical Information of China (English)

    邹安安

    2012-01-01

    针对基坑支护围护结构顶部沉降与水平位移监测技术与变形方法进行研究。通过对基坑支护围护结构顶部沉降与水平位移监测数据进行分析,解算各监测点的累积沉降和总体位移变化量,从而及时掌握基坑的变形状况。根据监测点的变形限值标准,确定可能出现预警的变形点,并分析基坑不同部位发生沉降和偏移的原因。%Foundation pit support for the building envelope at the top of the settlement and horizontal displacement monitoring technology and methods of deformation. Through the excavation enclosure at the top of the settlement and horizontal displacement monitoring data analysis, calculate the cumula- tive settlement of all monitoring points and the overall displacement volume, and thus grasp the de- formation of foundation. According to the deformation limit of the standard monitoring to identify early warning of possible deformation point, and analysis of foundation settlement and migration occurred in different parts of the reason.

  16. Improving Michigan STEM Teachers and Teaching: The W.K. Kellogg Foundation's Woodrow Wilson Teaching Fellowship

    Science.gov (United States)

    Woodrow Wilson National Fellowship Foundation, 2016

    2016-01-01

    The W. K. Kellogg Foundation's Woodrow Wilson Michigan Teaching Fellowship successfully addressed the challenge of preparing and supporting effective teachers for Michigan's high-need classrooms, while helping transform teacher education across the state for the long term. This report analyzes the efforts of the W. K. Kellogg Foundation's Woodrow…

  17. The preparation of 248CmF 3 deposits on self-supported carbon foils

    Science.gov (United States)

    Aaron, W. S.; Petek, M.; Zevenbergen, L. A.

    1987-06-01

    Another target preparative technique was recently added to the Isotope Research Materials Laboratory's (IRML) capabilities for custom target fabrication. In support of super-heavy-ion physics experiments, methods and equipment were developed for the preparation of 248CmF 3 deposits on carbon foils. The starting material was obtained as either a chloride or nitrate solution, converted to the flouride, and evaporated on carbon foil substrates. Deposits ranging from 40 to 570 μg/cm 2 were prepared as a 12-mm-diam spot on 45- to 60-μg/cm 2 self-supported carbon foils. The deposits were then overcoated with approximately 10 μg/cm 2 of carbon to minimize contamination problems during target handling. The high cost of 248Cm ($100/μg) and its limited availability were the key constraints in the development of preparative technology beyond the inherent radioactivity of 248Cm.

  18. Various conformations of carbon nanocoils prepared by supported Ni-Fe/molecular sieve catalyst.

    Science.gov (United States)

    Yang, Shaoming; Chen, Xiuqin; Takeuchi, K; Motojima, Seiji

    2006-01-01

    The carbon nanocoils with various kinds of conformations were prepared by the catalytic pyrolysis of acetylene using the Ni metal catalyst supported on molecular Sieves which was prepared using Fe-containing kaolin as the raw material. There are four kinds of carbon nanocoils conformations produced by this catalyst. The influences of reaction temperature and gas conditions on the conformations of the nanocoils were investigated and the reasons of forming nano-size coils were discussed by comparison with pure Ni metal catalyst.

  19. Vasculitis Foundation

    Science.gov (United States)

    ... Read More Click here to view full calendar Vasculitis Patient-Powered Research Network The V-PPRN seeks ... with various forms of vasculitis. Join The Network! Vasculitis Foundation News Introducing our 2017-2018 VCRC-VF ...

  20. Glaucoma Foundation

    Science.gov (United States)

    ... IMPORTANT RESEARCH FINDING First Cellular Model of Exfoliation Glaucoma Research is advancing in the quest to find ... cure for exfoliation syndrome and its associated exfoliation glaucoma, the current focus of The Glaucoma Foundation. Exfoliation ...

  1. Foundation Structure

    OpenAIRE

    Schakenda, Bruno; Nielsen, Søren Andreas; Ibsen, Lars Bo

    2009-01-01

    Method of installing a bucket foundation structure comprising one, two, three or more skirts, into soils in a controlled manner. The method comprises two stages: a first stage being a design phase and the second stage being an installation phase. In the first stage, design parameters are determined relating to the loads on the finished foundation structure; soil profile on the location; allowable installation tolerances, which parameters are used to estimate the minimum diameter and length of...

  2. Final report WP 4.2: Support Structure Concepts for Deep Water Sites: Deliverable D4.2.8 (WP4: offshore foundations and support structures)

    NARCIS (Netherlands)

    De Vries, W.E.; Vemula, N.K.; Passon, P.; Fischer, T.; Kaufer, D.; Matha, D.; Schmidt, B.; Vorpahl, F.

    2011-01-01

    With the number of offshore wind farms rapidly increasing, in a wide variety of site conditions and using different turbine sizes, the need for alternative support structures other than the conventional monopile structure is apparent and several projects have been realised using other support struct

  3. Final report WP 4.2: Support Structure Concepts for Deep Water Sites: Deliverable D4.2.8 (WP4: offshore foundations and support structures)

    NARCIS (Netherlands)

    De Vries, W.E.; Vemula, N.K.; Passon, P.; Fischer, T.; Kaufer, D.; Matha, D.; Schmidt, B.; Vorpahl, F.

    2011-01-01

    With the number of offshore wind farms rapidly increasing, in a wide variety of site conditions and using different turbine sizes, the need for alternative support structures other than the conventional monopile structure is apparent and several projects have been realised using other support struct

  4. Preparation of microcapsule-supported palladium catalyst using SPG (Shirasu Porous Glass) emulsification technique

    Institute of Scientific and Technical Information of China (English)

    Ying Liu; Xiu Juan Feng; De Cai Bao; Kai Xiao Li; Ming Bao

    2010-01-01

    A new method for the preparation of microcapsule-supported palladium catalyst was described.The highly monodisperse crosslinked polystyrene microcapsules containing phosphine ligand were synthesized by the self-assembling of phase separated polymer(SaPSeP)method using diphenyl(4-vinylphenyl)phosphine and divinylbenzene as a monomer and crosslinking agent,respectively,and 2,2'-azobisisobutyronitrile(AIBN)as an initiator within the droplets of oil-in-water(O/W)emulsions,which were prepared by using the Shirasu Porous Glass(SPG)membrane emulsification technique.The prepared microcapsule-supported palladium catalyst exhibited high catalytic activity for Heck reaction and can be reused several times without loss of activity.

  5. Factors influencing the preparation, support and training of South African expatriates

    Directory of Open Access Journals (Sweden)

    A. J. Vogel

    2008-12-01

    Full Text Available Purpose: The purpose of this paper is to determine if the independent variables; location of an international assignment, the age of an expatriate, the duration of an assignment and the management level of an expatriate, influence the preparation, support and training that they require for an international assignment. Design/Methodology/Approach: This formal, empirical study was undertaken using an electronic questionnaire that was distributed to expatriates who were on an international assignment. Expatriates who were on an international assignment were thought to be in the best position to respond to their preparation, support and training needs. Findings: The research found that the preparation, support and training required by South African expatriates are not influenced by the location of an international assignment, the age of the expatriate, the duration of an international assignment or the management level of the expatriate. Implications: The findings highlight the fact that human resource managers of South African multinational enterprises should provide all their expatriates with the same preparation, support and training, as well as identifies five requirements that should be included in all South African expatriate policies.

  6. 75 FR 3915 - Environmental Documents Prepared in Support of Sand and Gravel Activities on the Outer...

    Science.gov (United States)

    2010-01-25

    ... Minerals Management Service Environmental Documents Prepared in Support of Sand and Gravel Activities on... for three sand and gravel activities proposed on the Outer Continental Shelf (OCS) and described in... noncompetitive basis, the rights to OCS sand, gravel, or shell resources for shore protection, beach or...

  7. Centre of Excellence in Observational Oceanography: Nippon Foundation and POGO Supported Programme at the Bermuda Institute of Ocean Sciences

    Science.gov (United States)

    Plumley, F. G.; Sathyendranath, S.; Frouin, R.; Knap, T.

    2008-05-01

    Building on previous experience in capacity building for ocean observations, the Nippon Foundation (NF) and the Partnership for Observations of the Global Oceans (POGO) have announced a new Centre of Excellence (C of E) at the Bermuda Institute of Ocean Sciences (BIOS). The goals of the C of E are to expand the world-wide capacity and expertise to observe the oceans and to expand capacity-building projects and promote international collaboration and networking in ocean sciences. Over the past 104 years, BIOS has built a global reputation in blue-water oceanography, coral reef ecology, and the relationships between ocean health and human health coupled with high quality education programmes that provide direct, hands-on experience with BIOS-based research. The C of E at BIOS will build upon this model to establish a new, graduate-level education and training programme in operational oceanography. The 10 month Programme will offer course modules in ocean disciplines with a focus on observatory sciences complemented by hands-on training in observational methods and techniques based on the multi-disciplinary expertise of BIOS and BIOS-affiliated scientists who direct ongoing, ocean observational programmes such as: - Hydrostation S, since 1954; - Bermuda Atlantic Time-series Study, since 1988; - Oceanic Flux Program sediment trap time-series, since 1978; - Bermuda Test-Bed and Science Mooring, since 1994; - Bermuda Microbial Observatory, since 1997; - Bermuda Bio-Optics Program, since 1992; - Atmospheric chemistry and air-sea fluxes, since 1990 Additional areas of BIOS research expertise will be incorporated in the C of E to broaden the scope of education and training. These include the nearshore observational network of the BIOS Marine Environmental Program and the environmental air-water chemistry network of the Bermuda Environmental Quality Program. A key resource of the C of E is the newly acquired 168 ft. research vessel, the RV Atlantic Explorer, which was

  8. Entertainment, Engagement and Education: Foundations and Developments in Digital and Physical Spaces to Support Learning through Making

    DEFF Research Database (Denmark)

    Giannakos, Michail N.; Divitini, Monica; Iversen, Ole Sejer

    2017-01-01

    Making is a relatively new concept applied to describe the increasing attention on constructing activities to enable entertaining, engaging and efficient learning. Making focuses on the process that occurs in digital and/or physical spaces that is not always learning oriented, but enables qualities...... programming languages; posit making as a very promising research area to support the learning processes, especially towards the acquisition of 21st Century learning competences. Collecting learning evidence via rigorous multidimensional and multidisciplinary case studies will allow us to better understand...... and improve the value of making and the role of the various digital and physical spaces. Drawing from our experience with the recent workshop of making as a pathway to foster joyful engagement and creativity in learning (Make2Learn), we present the state-of-the-art developments as well as the four selected...

  9. Applied Foundations

    DEFF Research Database (Denmark)

    Kohlenbach, Ulrich

    2002-01-01

    A central theme in the foundations of mathematics, dating back to D. Hilbert, can be paraphrased by the following question "How is it that abstract methods (`ideal elements´) can be used to prove `real´ statements e.g. about the natural numbers and is this use necessary in principle?"...

  10. Bucket foundations

    DEFF Research Database (Denmark)

    Foglia, Aligi; Ibsen, Lars Bo

    In this report, bearing behaviour and installation of bucket foundations are reviewed. Different methods and standards are compared with the experimental data presented in Foglia and Ibsen (2014a). The most important studies on these topics are suggested. The review is focused on the response...

  11. PROCESSING AND CHARACTERIZATION OF TUBULAR CERAMIC SUPPORT FOR MICROFILTRATION MEMBRANE PREPARED FROM PYROPHYLLITE CLAY

    Directory of Open Access Journals (Sweden)

    Abedallah Talidi

    2011-09-01

    Full Text Available Tubular macroporous support for ceramic microfiltration membranes were prepared by extrusion followed by sintering of the low cost pyrophyllite clay. Clay powders mixed with some organic additives can be extruded to form a porous tubular support. The average pore size of the membrane is observed to increase from 5 µm to 10.8 µm when sintering temperature increase from 900 °C to 1200 °C. However, with the increase in temperature from 900 °C to 1200 °C, the support porosity is reduced from 47% to 30% and flexural strength is increased from 4 MPa to 17 MPa. The fabricated macro-porous supports are expected to have potential applications in the pre-treatment and also can be used like support for membranes of ultra-filtration.

  12. 深基环梁支护体系内力的研究%Loading of ring-beam support structure system in deep foundation ditch

    Institute of Scientific and Technical Information of China (English)

    丁克胜; 王沛; 杨宝珠

    2001-01-01

    Ring-beam support structure system is a new-type structure in deep foundation pit support structure.It may produre a hamonious load and gain a high bearing capacity.Its calculation model is elast ic multi-support.when using the saper 93 progvam with plane and overall calcula tion,the results are rather identical with the real condition,so it is a simple and effeetive method.%深基环梁支护体系是深基支护的一种新型结构,它受力均衡,承载力高,计算模型为多向弹性支座,利用Saper 93 程序进行平面整体设计计算的结果与实际比较相符,是一种非常简捷、有效的计算方法,但其水平支撑系统的内力受多方面因素的影响较大.

  13. Expanding the application of the tablet processing workstation to support the sample preparation of oral suspensions.

    Science.gov (United States)

    Opio, Alex Manuel; Nickerson, Beverly; Xue, Gang; Warzeka, John; Norris, Ken

    2011-06-01

    Sample preparation is the most time-consuming part of the analytical method for powder for oral suspension (POS) assay, purity, and preservative analysis, as this involves multiple dilution and filtration steps. The Tablet Processing Workstation (TPW) was used to automate the sample preparation of a POS formulation. Although the TPW is typically used to automate the preparation of solid oral dosage forms and powders, it contains all of the necessary components to perform POS sample preparation. The TPW exhibited acceptable repeatability in testing 3 lots using 10 replicate preparations per lot. Acceptable linearity of the drug and preservative in the presence of excipients was demonstrated over the range corresponding to 50-150% of intent. Accuracy showed suitable recoveries for all points evaluated. TPW results were shown to correlate to results obtained with the manual method. The TPW method was used to prepare samples in support of manufacturing scale-up efforts. With the efficiencies gained using the TPW, it was possible to analyze a large number of samples generated during process development activities for the POS formulation with minimal human intervention. The extensive data enabled trending of the manufacturing development runs and helped to identify optimization strategies for the process.

  14. Preparation and Support of Patients through the Transplant Process: Understanding the Recipients' Perspectives

    Directory of Open Access Journals (Sweden)

    Oliver Mauthner

    2012-01-01

    Full Text Available Preparation for heart transplant commonly includes booklets, instructional videos, personalized teaching sessions, and mentorship. This paper explores heart transplant recipients’ thoughts on their preparation and support through the transplant process. Twenty-five interviews were audio-/videotaped capturing voice and body language and transcribed verbatim. Coding addressed language, bodily gesture, volume, and tone in keeping with our visual methodology. Recipients reported that only someone who had a transplant truly understands the experience. As participants face illness and life-altering experiences, maintaining a positive attitude and hope is essential to coping well. Healthcare professionals provide ongoing care and reassurance about recipients’ medical status. Mentors, family members, and close friends play vital roles in supporting recipients. Participants reported that only heart transplant recipients understood the experience, the hope, and ultimately the suffering associated with living with another persons’ heart. Attention needs to be focused not solely on the use of teaching modalities, but also on the development of innovative support networks. This will promote patient and caregiver engagement in self-management. Enhancing clinicians’ knowledge of the existential aspects of transplantation will provide them with a nuanced understanding of the patients’ experience, which will ultimately enhance their ability to better prepare and support patients and their caregivers.

  15. Vertical Dynamic Stiffness of Offshore Foundations

    DEFF Research Database (Denmark)

    Latini, Chiara; Cisternino, Michele; Zania, Varvara

    2016-01-01

    Nowadays, pile and suction caisson foundations are widely used to support offshore structures which are subjected to vertical dynamic loads. The dynamic soil-structure interaction of floating foundations (foundations embedded in a soil layer whose height is greater than the foundation length...

  16. Preparation of A-type zeolite membranes on nonporous metal supports by using electrophoretic technique

    Institute of Scientific and Technical Information of China (English)

    HUANG Aisheng; LIU Jie; LI Yanshuo; LIN Yuesheng; YANG Weishen

    2004-01-01

    A-type zeolite membranes were prepared onthe nonporous metal supports by using electrophoretic tech-nique. The as-synthesized membranes were characterized byXRD and SEM. The effect of the applied potential on theformation of the A-type zeolite membrane was investigated,and the formation mechanism of zeolite membrane in theelectric field was discussed. The results showed that thenegative charged zeolite particles could migrate to the anodemetal surface homogenously and rapidly under the action ofthe applied electric field, consequently formed uniform anddense membranes in short time. The applied potential hadgreat effect on the membrane formation, and more uniformand denser zeolite membranes were prepared on the non-porous metal supports with 1 V potential.

  17. Medical students` perceptions of supporting pharmacology learning in English by key information prepared in Arabic.

    Science.gov (United States)

    ياسين, تيم; مروان, حجلة ابو; ريجينالد, سيكويرا

    2017-07-16

    We explored medical students` perceptions of supporting pharmacology self-learning in English by focused materials prepared in Arabic. This study targeted third-year medical students at the Arabian Gulf University in Bahrain (n= 183). During the endocrine and metabolism subunit, which is taught in English, slides containing focused information in Arabic preceded detailed English ones. At the end of the subunit, students` perceptions were explored by a questionnaire and focus group discussions. Most participants reported that this intervention made pharmacology learning easier, improved confidence in drug selection, knowledge of adverse drug reactions, detection of response to medications and occurrence of adverse reactions. Most respondents thought that this intervention would help them during the clinical phase of their study and in communicating drug therapy to patients in Arabic. Supporting pharmacology learning in a foreign language with instructional materials prepared in a native language improved students self-reported learning and satisfaction.

  18. Preparation of highly active AlSBA-15-supported platinum catalyst for thiophene hydrodesulfurization

    OpenAIRE

    KANDA, Yasuharu; AIZAWA, Tomohiro; Kobayashi, Takao; UEMICHI, Yoshio; NAMBA, Seitaro; SUGIOKA, Masatoshi

    2007-01-01

    The catalytic activities of various noble metals (Pt, Pd, Rh, and Ru) supported on siliceous SBA-15 and Al-containing SBA-15 (AlSBA-15) for hydrodesulfurization (HDS) of thiophene at 350 C were investigated. AlSBA-15 was prepared by a grafting method using aluminum isopropoxide (Al(OC3H7)3) hexane solution. The HDS activity of Pt/AlSBA-15 catalyst was the highest among those of various supported noble metal catalysts, and this activity was higher than that of commercial CoMo/Al2O3 HDS catalys...

  19. Preparation and reactions of polymer-supported 1-Alkoxycarbony la kylidenear soranes

    Energy Technology Data Exchange (ETDEWEB)

    Castells, J.; Lopez-Calahorra, F.; Yu, Z. [Departamet de Quimica Organica, Universidad de Barcelona, Barcelona (Spain)

    1994-12-31

    Ethoxycarbonylalkyldiphenylpolystyrylarsonium triflates are easily prepared by reaction of diphenylpolystyrylarsine with ethyl 2-trifloxyalkanoates. ``One-pot`` Wittin reactions of these polymer-supported arsonium salts with aromatic aldehydes take place satisfactorily in all cases affording good yields of the corresponding (E)-2alkyl-3-arylpropenoates. Two steps reactions, with isolation of the corresponding 1-ethoxycarbonylalkylidenediphenylpolystyrylarsoranes work well except in the case of ethoxycarbonyl ethylidenediphenylpolystyrylarsorane. 11 refs.

  20. Preparation of Multiwall Carbon Nanotubes-supported High Loading Platinum for Vehicular PEMFC Application

    Institute of Scientific and Technical Information of China (English)

    Bing ZHANG; Li Juan CHEN; Kai Yong GE; Yan Chuan GUO; Bi Xian PENG

    2005-01-01

    Multiwall carbon nanotube-supported Pt (Pt/MWNTs) catalysts with high dispersion and high loading of Pt were prepared by chemical reduction method and the loading of Pt got to 40wt%. The average diameter of Pt nanoparticles on MWNTs was about 3.5 nm. When the hydrogen and air were used as reactant gases for PEMFC, Pt/MWNTs catalysts showed significantly higher performance than the Pt/XC-72 (carbon black) catalysts.

  1. Foundations of Risk Analysis

    CERN Document Server

    Aven, Terje

    2012-01-01

    Foundations of Risk Analysis presents the issues core to risk analysis - understanding what risk means, expressing risk, building risk models, addressing uncertainty, and applying probability models to real problems. The author provides the readers with the knowledge and basic thinking they require to successfully manage risk and uncertainty to support decision making. This updated edition reflects recent developments on risk and uncertainty concepts, representations and treatment. New material in Foundations of Risk Analysis includes:An up to date presentation of how to understand, define and

  2. FORD FOUNDATION PROJECTS. PROGRESS REPORT.

    Science.gov (United States)

    ROBINETT, RALPH F.; ROJAS, PAULINE M.

    THE FORD FOUNDATION PROJECTS INCLUDE--THE PREPARATION OF READING MATERIALS FOR NONENGLISH SPEAKING BILINGUAL PUPILS ENTERING THE FIRST GRADE, THE REVISION OF "FRIES AMERICAN ENGLISH SERIES" FOR NONENGLISH SPEAKING BILINGUAL PUPILS WHO CAN READ AND WRITE IN THEIR OWN VERNACULAR, THE PREPARATION OF AUDIOVISUAL MATERIAL FOR BILINGUAL…

  3. Carbon covered alumina prepared by the pyrolysis of sucrose: A promising support material for the supported Pt-Sn-bimetallic dehydrogenation catalysis

    NARCIS (Netherlands)

    Luo, S.; He, S.; Li, X.R.; Seshan, K.

    2014-01-01

    Sucrose was pyrolyzed on gamma alumina surface to prepare carbon covered alumina (CCA) material. Alumina and CCA supported Pt–Sn catalysts were prepared by the complex impregnation method under vacuum. Dehydrogenation of n-octadecane was performed to study the effect of carbon addition, Pt loading a

  4. Carbon covered alumina prepared by the pyrolysis of sucrose: A promising support material for the supported Pt-Sn-bimetallic dehydrogenation catalysis

    NARCIS (Netherlands)

    Luo, S.; He, Songbo; Li, X.R.; Seshan, Kulathuiyer

    2014-01-01

    Sucrose was pyrolyzed on gamma alumina surface to prepare carbon covered alumina (CCA) material. Alumina and CCA supported Pt–Sn catalysts were prepared by the complex impregnation method under vacuum. Dehydrogenation of n-octadecane was performed to study the effect of carbon addition, Pt loading

  5. Carbon covered alumina prepared by the pyrolysis of sucrose: A promising support material for the supported Pt-Sn-bimetallic dehydrogenation catalysis

    NARCIS (Netherlands)

    Luo, S.; He, Songbo; Li, X.R.; Seshan, Kulathuiyer

    2014-01-01

    Sucrose was pyrolyzed on gamma alumina surface to prepare carbon covered alumina (CCA) material. Alumina and CCA supported Pt–Sn catalysts were prepared by the complex impregnation method under vacuum. Dehydrogenation of n-octadecane was performed to study the effect of carbon addition, Pt loading a

  6. The New Forgotten Half and Research Directions to Support Them. Summary and Key Findings. A William T. Grant Foundation Inequality Paper

    Science.gov (United States)

    Rosenbaum, James; Ahearn, Caitlin; Becker, Kelly; Rosenbaum, Janet

    2015-01-01

    In 1988, the William T. Grant Foundation issued "The Forgotten Half," the final report of the Foundation's Commission on Youth and America's Future. Focusing on inequality in American society, specifically among non-college-bound 16-24 year olds, the report explored the challenges facing young people and the institutions that serve them.…

  7. Approaches of Bill & Melinda Gates Foundation-Funded Intermediary Organizations to Structuring and Supporting Small High Schools in New York City. Executive Summary

    Science.gov (United States)

    Foley, Eileen

    2010-01-01

    In 2003, a few years after the Bill & Melinda Gates Foundation began implementing its small schools reform agenda, the Chancellor of the New York City Department of Education (DOE) announced a plan to replace large failing high schools in New York City with 200 small schools. In short order, the foundation and the Chancellor became partners with…

  8. Preparation of Bentonite Supported Nano Titanium Dioxide Photocatalysts by Electrostatic Self-assembly Method

    Institute of Scientific and Technical Information of China (English)

    WANG Cheng; SHI Huisheng; LI Yan

    2012-01-01

    Electrostatic self-assembly method (ESAM) was used to prepare bentonite supported-nano titanium dioxide photocatalysts.The materials were characterized by X-ray diffraction (XRD),fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM).Methyl orange was used to estimate the photocatalytic activity of the materials.The effects of the calcination temperature and silane dosage on the photocatalytic activity of the samples were investigated.The experimental results show that the bentonite facilitates the formation of anatase and restrains the transformation of anatase to rutile.Part of nano-size TiO2 particles insert into the galleries of bentonite.The photocatalysts exhibit a synergistic effect of adsorption and photocatalysis on methyl orange.Photocatalysts prepared by ESAM method exhibit higher photocatalytic activity and better recycle ability than those of the traditional method.

  9. Preparation of carbon supported Pt-P catalysts and its electrocatalytic performance for oxygen reduction

    Energy Technology Data Exchange (ETDEWEB)

    Ma Juan [Institute of Chemical Power Sources, Soochow University, Suzhou 215006 (China); Tang Yawen; Yang Gaixiu; Chen Yu [College of Chemistry and Material Science, Nanjing Normal University, Nanjing 210097 (China); Zhou Qun [Institute of Chemical Power Sources, Soochow University, Suzhou 215006 (China); Lu Tianhong [College of Chemistry and Material Science, Nanjing Normal University, Nanjing 210097 (China); Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022 (China); Zheng Junwei, E-mail: jwzheng@suda.edu.cn [Institute of Chemical Power Sources, Soochow University, Suzhou 215006 (China)

    2011-05-15

    The carbon supported PtP (PtP/C) catalysts were synthesized from Pt(NO{sub 3}){sub 2} and phosphorus yellow at the room temperature. The content of P in the PtP/C catalysts prepared with this method is high and the average size of the PtP particles is decreased with increasing the content of P. The electrocatalytic performances of the PtP/C catalysts prepared with this method for the oxygen reduction reaction (ORR) are better than that of the commercial Pt/C catalyst. The promotion action of P for enhancing the electrocatalytic performance of the PtP/C catalyst for ORR is mainly due to that Pt and P form the alloy and then the electron density of Pt is decreased.

  10. "Monkeys, babies, idiots" and "primitives": nature-nurture debates and philanthropic foundation support for American anthropology in the 1920s and 1930s.

    Science.gov (United States)

    Biehn, Kersten Jacobson

    2009-01-01

    There has been a long discussion among historians about the impact that foundation policies had on the development of the social sciences during the interwar era. This discussion has centered on the degree to which foundation officers, particularly from the Rockefeller boards, exercised a hegemonic influence on research. In this essay, I argue that the field of American cultural anthropology has been neglected and must be reconsidered as a window into foundation intervention in nature-nurture debates. Despite foundation efforts to craft an anthropology policy that privileged hereditarian explanations, I contend that cultural anthropologists were committed to proving the primacy of "nurture," even when that commitment cost them valuable research dollars. It was this commitment that provided an essential bulwark for the discipline. Ironically, it was the need to negotiate with foundations about the purpose of their research that helped cultural anthropologists to articulate their unique, and thus intrinsically valuable, approach to nature-nurture debates.

  11. PREPARATION AND CHARACTERIZATION OF NANOSTRUCTURED GRANULAR SUPPORT PARTICLES AND CATALYTIC MATERIALS

    Energy Technology Data Exchange (ETDEWEB)

    Zhenchen Zhong

    2002-01-15

    We have set up successfully two experimental systems during the past time of the project. The first system is sol-gel chemical method for preparing {gamma}-Al{sub 2}O{sub 3}, SiO{sub 2}, Cr{sub 2}O{sub 3} granular support particles. The second system is the laser-induced solution deposition (LISD) technique for nanoparticle catalysts containing Fe/Cu, and Co/Cu on the granular support. We have successfully deposited {gamma}-Al{sub 2}O{sub 3}, SiO{sub 2}, Cr{sub 2}O{sub 3} granular support particles by sol-gel method and Co and CoO nanoparticles by LISD novel fabrication technique. The characterization methods we have used include scanning electron microscope (SEM), high-resolution transmission electron microscope (HRTEM) and X-Ray diffraction (XRD). The research toward to the proposed direction is in good progress. We have given three presentations in national and local materials meetings and have submitted another two papers in another two key national meetings in nanotechnology and American Physical Annual March Meeting 2002. A couple of papers are in preparation.

  12. Sudden Arrhythmia Death Syndromes (SADS) Foundation

    Science.gov (United States)

    ... K. Cleveland, Jr. Young Investigator Awards in Cardiac Channelopathy Research 5/4/2016 - SADS Foundation Announces Courts K. Cleveland, Jr. Young Investigator Awards in Cardiac Channelopathy Research 7/6/2015 - The SADS Foundation Supports ...

  13. Preparation of catalyst for a polymer electrolyte fuel cell using a novel spherical carbon support

    Energy Technology Data Exchange (ETDEWEB)

    Eguchi, Mika; Okubo, Atsuhiko; Kobayashi, Yoshio [Department of Biomolecular Functional Engineering, Faculty of Engineering, Ibaraki University, 4-12-1, Nakanarusawa, Hitachi, Ibaraki 316-8511 (Japan); Yamamoto, Shun [Material and Biological Sciences, Graduate School of Science and Engineering, Faculty of Engineering, Ibaraki University, 4-12-1, Nakanarusawa, Hitachi, Ibaraki 316-8511 (Japan); Kikuchi, Mayuko; Nishitani-Gamo, Mikka [Department of Applied Chemistry, Faculty of Engineering, Toyo University, 2100 Kujirai, Kawagoe, Saitama 350-8585 (Japan); Uno, Katsuhiro [Department of Media and Telecommunications Engineering, Faculty of Engineering, Ibaraki University, 4-12-1, Nakanarusawa, Hitachi, Ibaraki 316-8511 (Japan); Ando, Toshihiro [National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)

    2010-09-15

    In this study, the support Pt catalyst was supported by a novel spherical carbon using a convenient technique. Two different preparation methods utilizing a nanocolloidal solution method without heat treatment were developed (methods 1 and 2). The scanning electron microscope (SEM) and transmission electron microscope (TEM) observations showed that the Pt nanoparticles (particle size) were supported, with higher dispersion being achieved with method 2 than method 1. The peak of the Pt metal was confirmed from the X-ray diffraction (XRD) measurement. Based on the inductively coupled plasma mass spectrometry (ICP-MS) measurements, Pt loading was 19.5 wt.% in method 1 and approximately 50 wt.% in method 2. The Pt specific surface area of the Pt/novel spherical carbon catalyst calculated from the cyclic voltammetry (CV) measurement result was larger than that of the commercially available Pt/Ketjen catalyst. These results indicated that the Pt nanoparticles were supported in high dispersion without heat treatment using novel spherical carbon as a carbon support. (author)

  14. Recovery of Uranium from Seawater: Preparation and Development of Polymer-Supported Extractants

    Energy Technology Data Exchange (ETDEWEB)

    Spiro, Alexandratos [City Univ. (CUNY), NY (United States). Hunter College

    2013-12-01

    A new series of polymer-supported extractants is proposed for the removal and recovery of uranium from seawater. The objective is to produce polymers with improved stability, loading capacity, and sorption kinetics compared to what is found with amidoximes. The target ligands are diphosphonates and aminomethyldiphosphonates. Small molecule analogues, especially of aminomethyldiphos-phonates, have exceptionally high stability constants for the uranyl ion. The polymeric diphosphonates will have high affinities due to their ability to form six-membered rings with the uranyl ion while the aminomethyldiphosphonates may have yet higher affinities due to possible tridentate coordination and their greater acidity. A representative set of the polymers to be prepared are indicated.

  15. Intercalated carbon nanotubes as a template for the preparation of supported heteroatomic nanoparticles.

    Science.gov (United States)

    Schouler, Marie-Claude; Chamssedine, Fadel; Claves, Daniel

    2011-03-01

    Chemistry in confined conditions is explored at the level of the interlayer space of multiwall carbon nanotubes. Starting from preliminary intercalated tubes, a ligand exchange reaction has been successfully conducted within the former Van der Waals gap, resulting in a final dispersion of heteroatomic particles, around 2 nm large and nearly homogeneous in size, on the outer surface of the tubes. Intercalated tubular carbon architectures thus prove to be interesting templates for a bottom-up preparation of chemically complex supported nanoparticles, with potential activities for versatile applications.

  16. Preparation of MgO supported platinum nanoparticle catalyst using toluene dispersed platinum sol

    Science.gov (United States)

    Seth, Jhumur; Nepak, Devadutta; Chaudhari, Vijay R.; Prasad, Bhagavatula L. V.

    2017-10-01

    An effective way of anchoring Pt nanoparticles on MgO using toluene dispersed platinum nanoparticles (Pt-NPs) as one of the ingredient is demonstrated. The usage of particles dispersed in toluene allows the retention of size and size distribution of preformed Pt-NPs even after deposition on MgO support with high active surface area, which is crucial for heterogeneous catalysis. The catalyst thus prepared, displayed selective hydrogenation of cinnamaldehyde to cinnamyl alcohol with high turn on frequency (TOF - 105 h-1) with respect to the total Pt content. We attribute this efficient catalytic performance to the uniform distribution and deposition of Pt on the active MgO support and its better accessible surface as evidenced by the cyclic-voltammetry results.

  17. Professional Learning Communities Participant's Activities for the What Works Clearinghouse Practice Guide: Foundational Skills to Support Reading for Understanding in Kindergarten through 3rd Grade. REL 2016-277a

    Science.gov (United States)

    Kosanovich, Marcia; Foorman, Barbara

    2016-01-01

    The Regional Educational Laboratory (REL) Southeast developed a Professional Learning Community (PLC) Facilitators Guide to support educators in the implementation of recommendations from the What Works Clearinghouse's. The practice guide focuses on the foundational reading skills that enable students to read words, relate those words to their…

  18. Professional Learning Communities Facilitator's Guide for the What Works Clearinghouse Practice Guide: Foundational Skills to Support Reading for Understanding in Kindergarten through 3rd Grade. REL 2016-277

    Science.gov (United States)

    Kosanovich, Marcia; Foorman, Barbara

    2016-01-01

    The Regional Educational Laboratory (REL) Southeast developed a Professional Learning Community (PLC) Facilitators Guide to support educators in the implementation of recommendations from the What Works Clearinghouse's. The practice guide focuses on the foundational reading skills that enable students to read words, relate those words to their…

  19. Monitoring Analysis on Supports of Reversed Constructed Podium Foundation Excavation in Shanghai Tower%上海中心大厦裙房基坑逆作法支护体系实测分析

    Institute of Scientific and Technical Information of China (English)

    翟文信

    2012-01-01

    The foundation excavation of podium in Shanghai Tower is constructed with reversed method which adopting diaphragm wall as supporting structure of the foundation excavation and external wall of basement, and adopting basement beams and floors as the supports of foundation excavation. The supporting system and construction technology of the reversed constructed foundation excavation are introduced. The monitoring data of supporting system are analyzed to evaluate the safety status during the whole construction process such as deviation and settlement of steel pipe columns, lateral deformation of diaphragm walls, differential settlement between steel pipe columns and diaphragm walls.%上海中心裙房基坑采用两墙合一的地下连续墙作为围护、结构梁板替代支撑并采用全逆作法施工.介绍了全逆作法基坑的支护体系及施工工艺,从逆作法施工支护体系的实测数据人手,通过对立柱桩的偏位及隆沉、地下连续墙的侧向变形、立柱桩与地下连续墙的差异沉降等实测数据分析,对逆作法施工全生命周期支护体系的安全状态进行评价.

  20. Wave dispersion of carbon nanotubes conveying fluid supported on linear viscoelastic two-parameter foundation including thermal and small-scale effects

    Science.gov (United States)

    Sina, Nima; Moosavi, Hassan; Aghaei, Hosein; Afrand, Masoud; Wongwises, Somchai

    2017-01-01

    In this paper, for the first time, a nonlocal Timoshenko beam model is employed for studying the wave dispersion of a fluid-conveying single-walled carbon nanotube on Viscoelastic Pasternak foundation under high and low temperature change. In addition, the phase and group velocity for the nanotube are discussed, respectively. The influences of Winkler and Pasternak modulus, homogenous temperature change, steady flow velocity and damping factor of viscoelastic foundation on wave dispersion of carbon nanotubes are investigated. It was observed that the characteristic of the wave for carbon nanotubes conveying fluid is the normal dispersion. Moreover, implying viscoelastic foundation leads to increasing the wave frequencies.

  1. Foundation GCSE mathematics for CCEA practice book

    CERN Document Server

    Liggett, Linda; Lambert, Elaine

    2013-01-01

    Help students build their confidence with hundreds of practice questions covering everything on the course, guiding them towards their target grades . This practice book offers complete support for the foundation tier of the CCEA GCSE Mathematices specification. It has been written to cover all the units of the specification and to accompany the endorsed textbook. It has been written by experienced teachers and examiners. - Enable students to practice and consolidate what they have learnt throughout the course with hundreds of questions. - Help develop students'skills and prepare them effectiv

  2. School Engagement as a Mediator of Academic Performance among Urban Youth: The Role of Career Preparation, Parental Career Support, and Teacher Support

    Science.gov (United States)

    Perry, Justin C.; Liu, Xiongyi; Pabian, Yvona

    2010-01-01

    Drawing from the contributions of vocational psychology, this study examined school engagement as a mediator of academic performance through the effects of career preparation (career planning, career decision-making self-efficacy), parental career support, and teacher support among diverse urban youth in middle school and high school (N = 285).…

  3. Preparation and characterization of fly ash cenospheres supported CuO-BiVO4 heterojunction composite

    Science.gov (United States)

    Zhang, Jin; Cui, Hao; Wang, Bing; Li, Chuang; Zhai, Jianping; Li, Qin

    2014-05-01

    Novel fly ash cenospheres supported CuO-BiVO4 heterojunction composites (CuO-BiVO4/FACs) were prepared by modified metalorganic decomposition and impregnation methods. The as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), X-ray photoelectron spectra (XPS), and UV-vis diffused reflectance spectroscopy (DRS) techniques. The XPS and SEM analyses indicated that Cu was present as CuO dispersed on the surface of BiVO4. The DRS spectra revealed that the composites had improved optical adsorption in the visible light region, and the composites exhibited enhanced photocatalytic activity for methylene blue (MB) degradation under visible light irradiation. It was found that the 5 wt% CuO-loaded composite showed the highest photocatalytic activity for MB dye wastewater treatment. FACs, a by-product generated in coal-firing power plants, were used as a low cost support which favored phase separation after the reaction owing to their low density.

  4. Nickel foam-supported polyaniline cathode prepared with electrophoresis for improvement of rechargeable Zn battery performance

    Science.gov (United States)

    Xia, Yang; Zhu, Derong; Si, Shihui; Li, Degeng; Wu, Sen

    2015-06-01

    Porous nickel foam is used as a substrate for the development of rechargeable zinc//polyaniline battery, and the cathode electrophoresis of PANI microparticles in non-aqueous solution is applied to the fabrication of Ni foam supported PANI electrode, in which the corrosion of the nickel foam substrate is prohibited. The Ni foam supported PANI cathode with high loading is prepared by PANI electrophoretic deposition, and followed by PANI slurry casting under vacuum filtration. The electrochemical charge storage performance for PANI material is significantly improved by using nickel foam substrate via the electrophoretic interlayer. The specific capacity of the nickel foam-PANI electrode with the electrophoretic layer is higher than the composite electrode without the electrophoretic layer, and the specific capacity of PANI supported by Ni foam reaches up to 183.28 mAh g-1 at the working current of 2.5 mA cm-2. The present electrophoresis deposition method plays the facile procedure for the immobilization of PANI microparticles onto the surface of non-platinum metals, and it becomes feasible to the use of the Ni foam supported PANI composite cathode for the Zn/PANI battery in weak acidic electrolyte.

  5. Preparation and characterization of zirconium dioxide catalyst supports modified with rare earth elements

    Energy Technology Data Exchange (ETDEWEB)

    Ozawa, Masakuni; Kimura, Mareo (Toyota Central Research and Development Labs., Inc., Aichi (Japan))

    1991-08-15

    ZrO{sub 2} catlyst supports modified with rare earth elements were prepared by coprecipitation from an aqueous solution of zirconium oxychloride and rare earth chlorides. The crystallization of amorphous hydrous ZrO{sub 2} was inhibited by doping with rare earths; the crystallization temperature was elevated as the amount and ionic radius of the rare earth modifiers was increased. Only modification using cerium had no effect on the crystallization process. The behavior of cerium was different from that of other rare earth elements with valency +3. A metastable cubic phase was formed for ZrO{sub 2} modified with 10 mol.% lanthanum, neodymium and samarium by heating at 600degC. X-ray diffraction and Raman data indicated that the metastable phase had large microstrain and short-range ordering similar to tetragonal symmetry. Rare earth modified ZrO{sub 2} showed a large surface area and good thermal stability as a catalyst support. The carbon monoxide oxidation activity of iron was enhanced by modification with neodymium of ZrO{sub 2} supports. The results suggest the effectiveness of rare earth modified ZrO{sub 2} as catalyst supports. (orig.).

  6. Preparation and Properties of Doped Lanthanum Gallate Film on a Ni/SDC Porous Anode Support

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    A 65.8-μm dense doped lanthanum gallate La0.8Sr0.2Ga0.85Mg0.15O2.825 (LSGM)film was prepared on a porous Ni/SDC(samarium doped ceria, Ce0.8Sm0.2O1.9) anode support by colloid suspension deposition with incomplete crystallization LSGM powder as a starting material. The phase composition and micromorphology of the LSGM film were characterized by X-ray diffraction and scanning electron microscopy. The electrical properties of the LSGM film and the performances of the LSGM film solid oxide fuel cell were also analyzed. The results show that both the dense LSGM film on the porous anode support, and the required phase composition of the LSGM film were obtained simultaneously by sintering at 1400℃ for 6 h. The adhesion between the LSGM film and the porous anode support is very strong. The electrical conductivities of the LSGM film on the porous anode support are 0. 113 and 0. 173 S/cm at 800and 850 ℃, respectively. The maximum output power density of the LSGM film cell is 177 mW/cm2 at 700 ℃.

  7. An easy method for the preparation of anion exchange membranes: Graft-polymerization of ionic liquids in porous supports

    NARCIS (Netherlands)

    Merle, Geraldine; Chairuna, Annisa; Ven, van de Erik; Nijmeijer, Kitty

    2013-01-01

    A novel way for anion exchange membrane (AEM) preparation has been investigated, avoiding the use of expensive and toxic chemicals. This new synthetic approach to prepare AEMs was based on the use of a porous polybenzylimidazole membrane as support in which functionalized ILs were introduced and sub

  8. 谈泰达广场 G & H 区项目基坑支护技术%On foundation pit support technique at G & H Area of Taida Square

    Institute of Scientific and Technical Information of China (English)

    庞建栋; 张春晓

    2016-01-01

    结合天津泰达广场 G&H 区项目的地质条件,从基坑支护、止水帷幕设计、基坑降水、施工程序等方面,阐述了该工程的基坑支护方案,并对该方案进行了监测,结果表明该基坑支护技术达到了预期的施工效果。%Combining with the geological conditions of the projects at the G&H Area of Taida Square,the paper illustrates the foundation pit sup-port scheme of the project from the foundation pit support,waterproof curtain design,dewatering foundation pit,and construction program,in-spects the scheme,and proves by the result the foundation pit support technique achieves the expected construction effect.

  9. ITIL Foundation exam study guide

    CERN Document Server

    Gallacher, Liz

    2012-01-01

    Everything you need to prepare for the ITIL exam The ITIL (Information Technology Infrastructure Library) exam is the ultimate certification for IT service management. This essential resource is a complete guide to preparing for the ITIL Foundation exam and includes everything you need for success. Organized around the ITIL Foundation syllabus, the study guide addresses the ITIL Service Lifecycles, the ITIL processes, roles, and functions, and also thoroughly explains how the Service Lifecycle provides effective and efficient IT services. Offers an introduction to IT service management and ITI

  10. Application of TRD Method to Deep Foundation Pit Support in Nanchang Greenland Center Project%TRD工法在南昌绿地中心深基坑围护中的应用

    Institute of Scientific and Technical Information of China (English)

    向鸿秋; 张华

    2011-01-01

    Peripheral environment of tower building deep foundation pit in Nanchang Greenland center project are complicated. Soil layers permeability are strong within excavation depth of foundation pit. Obstacle contents are taller. TRD method adopted act water stop curtain of foundation pit. The walls formed by twice tests determine construction parameter. Engineering support system is safe and economical.%南昌绿地中心项目塔楼深基坑周边环境复杂,基坑开挖深度范围内土层渗透性强,障碍物含量较高,选用TRD工法作为基坑止水帷幕,通过两次试成墙来确定施工参数,使得工程支护体系符合安全经济的原则。

  11. Nanostructured Carbon Materials as Supports in the Preparation of Direct Methanol Fuel Cell Electrocatalysts

    Directory of Open Access Journals (Sweden)

    María Jesús Lázaro

    2013-08-01

    Full Text Available Different advanced nanostructured carbon materials, such as carbon nanocoils, carbon nanofibers, graphitized ordered mesoporous carbons and carbon xerogels, presenting interesting features such as high electrical conductivity and extensively developed porous structure were synthesized and used as supports in the preparation of electrocatalysts for direct methanol fuel cells (DMFCs. The main advantage of these supports is that their physical properties and surface chemistry can be tailored to adapt the carbonaceous material to the catalytic requirements. Moreover, all of them present a highly mesoporous structure, diminishing diffusion problems, and both graphitic character and surface area can be conveniently modified. In the present work, the influence of the particular features of each material on the catalytic activity and stability was analyzed. Results have been compared with those obtained for commercial catalysts supported on Vulcan XC-72R, Pt/C and PtRu/C (ETEK. Both a highly ordered graphitic and mesopore-enriched structure of these advanced nanostructured materials resulted in an improved electrochemical performance in comparison to the commercial catalysts assayed, both towards CO and alcohol oxidation.

  12. The all-ceramic, inlay supported fixed partial denture. Part 1. Ceramic inlay preparation design: a literature review.

    Science.gov (United States)

    Thompson, M C; Thompson, K M; Swain, M

    2010-06-01

    The effect of cavity design is a controversial and underrated factor in the clinical success of ceramic inlays and inlay supported prosthesis. Many articles and studies have been conducted into the advantages and disadvantages of isolated aspects of preparation design, but lacking is a review of the most relevant papers which bring together a consensus on all the critical features. Hence, a review and analysis of cavity depth, width, preparation taper and internal line angles is warranted in our attempts to formulate preparation guidelines that will lead to clinically successful, all-ceramic inlay restorations and ceramic inlay supported prosthesis.

  13. Preparation

    Directory of Open Access Journals (Sweden)

    M.M. Dardir

    2014-03-01

    Full Text Available Some hexanamide-mono and di-linoleniate esters were prepared by the reaction of linolenic acid and hexanamide (derived from the reaction of hexanoic acid and diethanolamine. The chemical structure for the newly prepared hexanamide-mono and di-linoleniate esters were elucidated using elemental analysis, (FTIR, H 1NMR and chemical ionization mass spectra (CI/Ms spectroscopic techniques. The results of the spectroscopic analysis indicated that they were prepared through the right method and they have high purity. The new prepared esters have high biodegradability and lower toxicity (environmentally friendly so they were evaluated as a synthetic-based mud (ester-based mud for oil-well drilling fluids. The evaluation included study of the rheological properties, filtration and thermal properties of the ester based-muds formulated with the newly prepared esters compared to the reference commercial synthetic-based mud.

  14. The Application of Foundation Pit Monitoring Technology to the Excavation

    OpenAIRE

    Qiu Jin; Li Fei

    2015-01-01

    The foundation pit monitoring plays an important role in the foundation pit supporting projects especially in those deep foundation pit projects. Through the whole monitoring of the foundation pit construction from the excavation to the backfill, we can learn about the forcing and deforming process of the foundation pit supporting system, and grasp the impact of external condition changes on the foundation pit. This paper takes a project in Jinan as an example to establish a specific monitori...

  15. Preparation of molecularly imprinted microspheres by photo-grafting on supports modified with iniferter

    Institute of Scientific and Technical Information of China (English)

    RONG Fei; FENG Xiaogang; LI Ping; YUAN Chunwei; FU Degang

    2006-01-01

    Molecularly imprinted microspheres (MIMs) of D-mandelic acid were synthesized in this study. Chloromethylated polystyrene beads modified with iniferter were used as supports for photo-grafting of a molecularly imprinted polymer (MIP) layer. The polymers were characterized by FT-IR, elemental analysis and thermo-gravimetric analysis to testify the polymer formation and its thermal stability. Scanning electron micrographs (SEM) show that the MIP particles are mono-dispersed and well-spherical, with the average diameter of 4.38 μm and size distribution coefficient of 1.02. Furthermore, the MIMs were packed in a stainless steel column and evaluated as stationary phases in high performance liquid chromatography (HPLC). The prepared MIP exhibited a considerable capability of chiral separation between template and its enantiomer. Accordingly, this kind of MIP is likely to have wide applications in chemical sensing, chromatographic analysis and solid phase extraction.

  16. Preparation of Mesoporous Silica-Supported Palladium Catalysts for Biofuel Upgrade

    Directory of Open Access Journals (Sweden)

    Ling Fei

    2012-01-01

    Full Text Available We report the preparation of two hydrocracking catalysts Pd/CoMoO4/silica and Pd/CNTs/CoMoO4/silica (CNTs, carbon nanotubes. The structure, morphologies, composition, and thermal stability of catalysts were studied by X-ray diffraction (XRD, scanning electron microscopy (SEM, Raman spectroscopy, transmission electron microscopy (TEM, energy-dispersive X-ray (EDX, and thermogravimetric analysis (TGA. The catalyst activity was measured in a Parr reactor with camelina fatty acid methyl esters (FAMEs as the feed. The analysis shows that the palladium nanoparticles have been incorporated onto mesoporous silica in Pd/CoMoO4/silica or on the CNTs surface in Pd/CNTs/CoMoO4/silica catalysts. The different combinations of metals and supports have selective control cracking on heavy hydrocarbons.

  17. PROPERTIES OF POLYMER SUPPORTED Ni-Cu BIMETALLIC CATALYSTS PREPARED BY SOLVATED METAL ATOM IMPREGNATION

    Institute of Scientific and Technical Information of China (English)

    WU Shihua; ZHU Changying; HUANG Wenqiang

    1996-01-01

    D-72 resin supported nickel-copper catalysts prepared by solvated metal atom impregnation (SMAI) were studied by magnetic measurements and X-ray photoelectron spectroscopy (XPS). The Ni particles on the catalysts are very highly dispersed and display superparamagnetic behaviour. Ni-Cu alloy clusters were found to be formed. The surface compositions are different from the bulk concentrations. In contrast with the surface enrichment in copper generally observed on conventional Ni-Cu catalysts, the surfaces of these catalysts are enriched in nickel. The nickel is in both zero and valent states, while copper is mainly in metallic state. Catalytic data show that the formation of Ni-Cu alloy clusters has a profound effect on the catalytic activities of the catalysts in the hydrogenation of furfural. The activity of the Ni:Cu ratio of one bimetallic catalysts is much higher than that of the Ni or Cu monometallic catalyst.

  18. Preparation of new microgel polymers and their application as supports in organic synthesis.

    Science.gov (United States)

    Spanka, Carsten; Clapham, Bruce; Janda, Kim D

    2002-05-03

    A series of soluble microgel polymers have been synthesized using solution-phase polymerization reactions. In a systematic manner, several variables such as monomer concentration, cross-linker content, reaction solvent and reaction time were examined, and this provided an optimal polymer with both solubility and precipitation characteristics suitable for synthetic applications. Thus, a chemically functionalized microgel polymer was synthesized, and the utility of this polymer in the synthesis of a small array of oxazole compounds has been demonstrated. The advantage of the microgel polymers produced was that they exhibited solution viscosities lower than those of conventional linear polymers even at higher concentrations, and this was found to be beneficial for their precipitation properties. Compounds prepared using the described microgel polymer supports were obtained in similar yields and purity when compared with insoluble resins, and more importantly, the soluble polymer bound intermediates could be analyzed at each step using standard NMR techniques.

  19. Using supported Au nanoparticles as starting material for preparing uniform Au/Pd bimetallic catalysts

    Energy Technology Data Exchange (ETDEWEB)

    Villa, Alberto [Universita di Milano, Italy; Prati, Laura [Universita di Milano, Italy; Su, Dangshen [Fritz Haber Institute of the Max Planck Society, Berlin, Germany; Wang, Di [Fritz Haber Institute of the Max Planck Society, Berlin, Germany; Veith, Gabriel M [ORNL

    2010-01-01

    One of the best methods for producing bulk homogeneous (composition) supported bimetallic AuPd clusters involves the immobilization of a protected Au seed followed by the addition of Pd. This paper investigates the importance of this gold seed in controlling the resulting bimetallic AuPd clusters structures, sizes and catalytic activities by investigating three different gold seeds. Uniform Au-Pd alloy were obtained when a steric/electrostatic protecting group, poly(vinyl alcohol) (PVA), was used to form the gold clusters on activated carbon (AC). In contrast Au/AC precursors prepared using Au nanoparticles with only electrostatic stabilization (tetrakis(hydroxypropyl)phosphonium chloride (THPC)), or no stabilization (magnetron sputtering) produced inhomogeneous alloys and segregation of the gold and palladium. The uniform alloyed catalyst (Pd{at}Au{sub PVA}/AC) is the most active and selective catalyst, while the inhomogenous catalysts are less active and selective. Further study of the PVA protected Au clusters revealed that the amount of PVA used is also critical for the preparation of uniform alloyed catalyst, their stability, and their catalytic activity.

  20. Compressor Foundation Analysis Tool(COFANTO)

    NARCIS (Netherlands)

    Eijk, A.; Lentzen, S.S.K; Zuada Coelho, B.E.; Galanti, F.M.B.

    2012-01-01

    Reciprocating compressors are generally supported on a heavy concrete foundation. In spite of the large inertia and stiffness of the foundation, problems can occur due to interaction between the mechanical installation and the foundation. Two types of problems may occur. In the first type, the inter

  1. Compressor Foundation Analysis Tool(COFANTO)

    NARCIS (Netherlands)

    Eijk, A.; Lentzen, S.S.K; Zuada Coelho, B.E.; Galanti, F.M.B.

    2012-01-01

    Reciprocating compressors are generally supported on a heavy concrete foundation. In spite of the large inertia and stiffness of the foundation, problems can occur due to interaction between the mechanical installation and the foundation. Two types of problems may occur. In the first type, the inter

  2. Preparation of composite hollow fiber membranes: co-extrusion of hydrophilic coatings onto porous hydrophobic support structures

    NARCIS (Netherlands)

    He, T.; Mulder, M.H.V.; Strathmann, H.; Wessling, M.

    2002-01-01

    Coating a layer onto a support membrane can serve as a means of surface functionalization of membranes. Frequently, this procedure is a two-step process. In this paper, we describe a concept of membrane preparation in which a coating layer forms in situ onto a support membrane in one step by a co-ex

  3. [Analysis on Research Projects Supported by the National Natural Science Foundation of China at the National Institute of Parasitic Diseases during 2003-2013].

    Science.gov (United States)

    Zhou, Xiao-jun; Zheng, Bin; Yi, Feng-yun; Xiong, Yan-hong; Zhang, Min-qi

    2015-04-01

    The data of the National Natural Science Foundation (NSFC) projests obtained by the National Institute of Parasitic Diseases (NIPD), Chinese Center for Disease Control and Prevention (China CDC) during 2003-2013 were collected from internet-based science information system of NSFC, and NSFC search tool of Dingxiang Garden (http://nsfc.biomart.cn/). The number of funded projects, their subject classification and approved amount were analyzed, and compared with the other institutes of China CDC. Furthermore, the rationalization proposals were given in order to enhance the level of foundation management in the future.

  4. [Analysis of funding of projects on obstetrics and gynecology supported by National Natural Science Foundation of China from 2007 to 2016].

    Science.gov (United States)

    Qin, S H; Huang, Q S; Yao, S Z

    2017-04-25

    Objective: To summarize the funding of scientific research projects on obstetrics and gynecology by National Natural Science Foundation of China (NSFC) from 2007 to 2016 and to display the hotspots of scientific research on obstetrics and gynecology. Methods: A systemic search was performed for the information of projects supported by NSFC from 2007 to 2016. The indicators for analysis included the number of projects, total investment, project categories, research units and research field. The research direction of each project was decided based on title, summary and key words provided by the profile of each project. Results: The total investment on obstetrics and gynecology by NSFC was 23.214 million with a total of 82 projects in 2007. It increased year by year and reached the peak in 2014 (359 projects 208.990 million). The investment and number of projects remained stable after 2014. General projects (1 109 projects 608.000 million) formed the majority of projects. Youth science fund projects (1 035 projects 214.976 million) increased steadily and the number was nearly equal to general projects. There were only a small amount of key projects (20 projects 54.720 million) and major projects (7 projects 38.400 million). The investment varied in different research units. The greatest 10 units (less than 6% of total), including 7 comprehensive universities, 2 medical universities and 1 institute of medicine, got 1 113 projects invested (43.84% of total, 1 113/2 539). The hot areas like gynecological tumor (920 projects 350.615 million), hypertensive disorders complicating pregnancy (91 projects 37.470 million) and polycystic ovarian syndrome (77 projects 29.540 million) were more likely to receive investment, while some interdisciplinary science like maternal and child health (28 projects 12.050 million), imaging and biomedicine (37 projects 14.770 million) began to achieve attention in recent years. Conclusions: The number of researches invested will be increased

  5. Preparation of birnessite-supported pt nanoparticles and their application in catalytic oxidation of formaldehyde.

    Science.gov (United States)

    Liu, Linlin; Tian, Hua; He, Junhui; Wang, Donghui; Yang, Qiaowen

    2012-01-01

    Flaky and nanospherical birnessite and birnessite-supported Pt catalysts were successfully prepared and characterized by means of Xray diffraction (XRD), transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS) and N2 adsorption-desorption. Effects of the birnessite morphology and Pt reduction method on the catalytic activity for the complete oxidation of formaldehyde (HCHO) were investigated. It was found that flaky birnessite exhibited higher catalytic activity than nanospherical birnessite. The promoting effect of Pt on the birnessite catalyst indicated that the reduction method of the Pt precursor greatly influenced the catalytic performance. Flaky birnessite-supported Pt nanoparticles reduced by KBH4 showed the highest catalytic activity and could completely oxidize HCHO into CO2 and H20 at 50 degreesC, whereas the sample reduced using H2-plasma showed lower activity for HCHO oxidation. The differences in catalytic activity of these materials were jointly attributed to the effects of pore structure, surface active sites exposed to HCHO and the dispersion of Pt nanoparticles.

  6. Microwave-supported preparation of (68)Ga bioconjugates with high specific radioactivity.

    Science.gov (United States)

    Velikyan, I; Beyer, G J; Långström, B

    2004-01-01

    The generator-produced positron-emitting (68)Ga (T(1/2) = 68 min) is of potential interest for clinical PET. (68)Ga as a metallic cation is suitable for complexation reactions with chelators, naked or conjugated, with peptides or other macromolecules. Large (68)Ga generator eluate volumes, metal traces from the generator column material, or reaction reagents, however, disturb a fast, reliable, and quantitative labeling procedure. In this paper we describe a simple technique, based on anion exchange, aiming first, to increase the (68)Ga concentration, second to purify it from competing impurities, and third to obtain a fast and quantitative (68)Ga-labeled peptide conjugate that can be applied in humans without further purification. Within 5 min one can obtain from the original 6 mL generator eluate a 200 microL (68)Ga preparation (volume reduction by a factor 30) that is suitable for direct and quantitative labeling of peptide conjugates. DOTATOC (DOTA-D-Phe(1)-Tyr(3)-octreotide, DOTA = 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid) was used as a test tracer for comparing the labeling properties of the different (68)Ga preparations. In combination with microwave heating, peptide conjugates of 0.5-1 nmol quantities could be labeled within 10 min with the full (68)Ga activity of a generator. Further purification of the (68)Ga-labeled peptide conjugate was no longer required since the nuclide incorporation was quantitative. The specific radioactivity (with respect to the peptide) was improved by a factor approximately 100 compared to the previously applied techniques using the original generator eluate. The commercial (68)Ge/(68)Ga generator from Obninsk in combination with this system for purification and concentration with an integrated microwave-supported labeling technology resulted in a kitlike technology for (68)Ga-tracer production. The first automated prototype using this technology is being tested.

  7. Design and Application of Deep Foundation Ditch Supporting Structure in Tianjin Coastal Soft Soil Area%天津滨海软土地区深基坑支护结构的设计与实践

    Institute of Scientific and Technical Information of China (English)

    曹骞; 潘家明

    2012-01-01

    针对天津滨海软土地区某工程深基坑的周边环境条件,分别采用双排桩(附加角支撑)、三排桩、悬臂式水泥挡土墙及开挖边坡等多种支护形式进行方案比较,重点介绍该项目深基坑支护结构的设计方法.本工程深基坑开挖的效果良好,取得较好的社会效益和经济效益,可供类似工程参考.%Based on the environmental conditions around the deep foundation ditch within Tianjin coastal soft soil area, we make comparison of design study which include two-wall piling structure (with included-angle support), three-wall piling structure, cantilever cement retaining wall, slope excavation and other supporting structures, and introduce the design of deep foundation ditch supporting structure as a key point. The engineering practice proves that the excavation of deep foundation ditch is effective, and brings us better social and economic benefits, which will provide references for similar projects.

  8. 复杂环境下的桥墩基坑支护施工及监测%CONSTRUCTION AND MONITORING TECHNIQUE OF BRIDGE PIER FOUNDATION PIT SUPPORT UNDER COMPLEX CONDITIONS

    Institute of Scientific and Technical Information of China (English)

    姜志刚

    2012-01-01

    In Caofeidian Nachao River Bridge project, the foundation pit of main bridge pier base has a maximum depth of 13.5m and it is adjacent to railway and breakwater. During construction of foundation pit, the combined supporting system of steel sheet pile plus internal support is adopted, D-type beam is used to strengthen adjacent rail line, and pile foundation is selected as a base supporting the beam, so as to guarantee construction safety and safe operation of existing railway and to successfully complete the Nachao River Bridge project.%曹妃甸纳潮河大桥工程,主桥墩承台基坑最大深度达13.5m,且紧邻既有铁路线及防浪堤,承台基坑施工中采用钢板桩+内支撑组合支护体系,并采取D型便梁对紧邻的铁路线路进行加固,选择桩基作为便梁的支墩,达到确保施工安全和既有铁路安全运营,顺利完成纳潮河大桥建设.

  9. CO2 as a regulator for the controllable preparation of highly dispersed chitosan-supported Pd catalysts in ionic liquids.

    Science.gov (United States)

    Xue, Zhimin; Sun, Xiaofu; Li, Zhonghao; Mu, Tiancheng

    2015-07-11

    A controllable synthetic route has been developed for the preparation of chitosan supported Pd catalysts in an ionic liquid, 1-butyl-3-methylimidazolium acetate ([Bmim]OAc), by using compressed CO2 as the anti-solvent and regulator. It was found that the dispersion of Pd particles on chitosan and the catalytic activity of the as-prepared catalysts for the hydrogenation of styrene could be tuned by changing the pressure of CO2.

  10. Preparation and characterization of HypoGel-supported Pd nanocatalysts for Suzuki reaction under mild conditions

    Institute of Scientific and Technical Information of China (English)

    Kin Hong Liew; Wan Zurina Samad; Norazzizi Nordin; Poh Lee Loh; Joon Ching Juan; Mohd Ambar Yarmo; Badrul Hisham Yahaya; Rahimi M. Yusop

    2015-01-01

    A new heterogeneous catalyst composed of Pd nanoparticles immobilized within a HypoGel resin has been prepared in the absence of any ligands using an extensive cross-linking method. This new-ly developed nanocatalyst was characterized by N2 adsorption-desorption, X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy dispersive X-ray (EDX), Fourier transform infrared spectroscopy and inductively coupled plasma-mass spec-trometer (ICP-MS) techniques. TEM and XRD results revealed that the Pd nanoparticles were well dispersed with diameters in the range of 4–12 nm, and an average size of about 8 nm. The cross-linked Pd catalyst demonstrated excellent catalytic activity towards the synthesis of a series of biaryl compounds by the reaction of various aryl halides (e.g., bromides andiodides) with phenyl-boronic acid in the presence of tetrabutylammonium bromide. ICP-MS analysis indicated that there was only 0.25% weight loss of Pd (0.55 ± 0.02 ppm) from the supported catalyst after the first cycle reaction. Furthermore, the catalyst showed excellent reusability (up to five uses) with consistently high levels of catalytic activity following its recovery by filtration.

  11. [Preparation and applications of a supported liquid-liquid extraction column with a composite diatomite material].

    Science.gov (United States)

    Bao, Jianmin; Ma, Zhishuang; Sun, Ying; Wang, Yongzun; Li, Youxin

    2012-08-01

    A rapid and special supported liquid-liquid extraction (SLE) column was developed with a composite diatomite material. The SLE column was evaluated by high performance liquid chromatography (HPLC) with acidic, neutral and alkaline compounds dissolved in water. Furthermore, some real complex samples were also analyzed by HPLC with the SLE method. The recoveries of benzoic acid (acidic), p-nitroaniline (alkaline) and 4-hydroxy-benzoic methyl ester (neutral) treated by the SLE column were 90.6%, 98.1% and 97.7%. However, the recoveries of the three compounds treated by traditional liquid-liquid extraction (LLE) method were 71.9%, 81.9% and 83.9%. The results showed that the SLE technique had higher recoveries than the traditional LLE method. The spiked recoveries of the complex samples, such as benzoic acid in Sprite and dexamethasone acetate, chlorphenamine maleate, indomethacin in bovine serum, were between 80% and 110% and the relative standard deviations (RSDs) were less than 15%. For biological specimen, the results could be accepted. Meantime, many disadvantages associated with traditional LLE method, such as emulsion formation, didn't occur using SLE column. The SLE column technique is a good sample preparation method with many advantages, such as rapid, simple, robust, easily automated, high recovery and high-throughput, which would be widely used in the future.

  12. Simple preparation of tungsten supported carbon nanoreactors for specific applications: Adsorption, catalysis and electrochemical activity

    Energy Technology Data Exchange (ETDEWEB)

    Mayani, Vishal J.; Mayani, Suranjana V.; Kim, Sang Wook, E-mail: swkim@dongguk.ac.kr

    2015-08-01

    Graphical abstract: - Highlights: • Tungsten carbon composites have shown great recognition in catalysis and electrochemistry. • W-carbon composites are prepared by template replication and W-doping on carbon cage. • Nanocomposites offer enormous assurance as adsorbent, electrode and heterogeneous catalyst. - Abstract: Porous carbon supported tungsten carbide nanoreactors, two sizes (∼25 and 170 nm), were designed using economical petroleum pitch residue followed by tungsten (W) doping. X-ray diffractions showed both carbon tungsten composites (CTC-25 and CTC-170) contained tungsten subcarbide (W{sub 2}C) and monocarbide (WC) as the major and minor crystalline phases, respectively. The present study provides a multiple perspective of carbon tungsten composites (CTCs) for methanol oxidation (as an electrode), adsorption (as an adsorbent) and degradation (as a solid catalyst) of methylene blue (MB). The operational electrodes were designed from both CTCs and used as a catalyst in an electrocatalysis process. The electrocatalysts exhibited high and stable catalytic performance (CTCE-25 > CTCE-170) in methanol electro-oxidation. The newly synthesized W-doped carbon nanoreactors were used successfully as an adsorbent for MB and a heterogeneous catalyst for MB oxidation. Ordered CTC-25 and CTC-170 exhibited dynamic MB adsorption within 15 min and complete oxidation of MB in 25–40 min. A synergetic effect between tungsten carbide and the carbon cage framework was noted.

  13. Preparation of ZIF-8 membranes supported on macroporous carbon tubes via a dipcoating-rubbing method

    Science.gov (United States)

    Kong, Lingyin; Zhang, Xiongfu; Liu, Haiou; Wang, Tonghua; Qiu, Jieshan

    2015-02-01

    In the present work, a new dipcoating-rubbing method (DCRM) was developed to seed the surface of a macroporous carbon tube with a mixture of graphite and ZIF-8 nanoparticles. A continuous and low-defect ZIF-8 membrane was well formed on the seeded carbon tube by solvothermal growth. The DCRM involved a two-step process including first dipcoating a thin layer of the composite of graphite and ZIF-8 nanoparticles on the carbon surface and then rubbing the layer to form a stable seed layer. The graphite in the composite acting as binding agent could have two functions: (1) anchoring the ZIF-8 seeds onto the carbon surface; (2) smoothing the coarse surface of the macroporous carbon tube, thus forming a high quality ZIF-8 membrane. The as-prepared membrane was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and single gas permeation and was proved to be continuous and low-defect. The ideal selectivity of H2/CH4 is 7.9 with a H2 permeance of 7.15×10-8 mol Pa-1 s-1 m-2, which is higher than its corresponding Knudsen diffusion value. We could therefore expect the ZIF-8 membrane supported on macroporous tubular carbon to achieve a high selectivity of H2 over CH4 through a molecular sieving effect.

  14. The impact of preparation and support procedures for children with sickle cell disease undergoing MRI

    Energy Technology Data Exchange (ETDEWEB)

    Cejda, Katherine R. [St. Jude Children' s Research Hospital, Child Life Program, Memphis, TN (United States); Smeltzer, Matthew P. [St. Jude Children' s Research Hospital, Department of Biostatistics, Memphis, TN (United States); Hansbury, Eileen N. [Baylor International Hematology Center of Excellence and the Texas Children' s Center for Global Health, Houston, TX (United States); McCarville, Mary Elizabeth; Helton, Kathleen J. [St. Jude Children' s Research Hospital, Department of Radiological Sciences, Memphis, TN (United States); Hankins, Jane S. [St. Jude Children' s Research Hospital, Department of Hematology, Memphis, TN (United States)

    2012-10-15

    Children with sickle cell disease (SCD) often undergo MRI studies to assess brain injury or to quantify hepatic iron. MRI requires the child to lie motionless for 30-60 min, thus sedation/anesthesia might be used to facilitate successful completion of exams, but this poses additional risks for SCD patients. To improve children's ability to cope with MRI examinations and avoid sedation, our institution established preparation and support procedures (PSP). To investigate the impact of PSP in reducing the need for sedation during MRI exams among children with SCD. Data on successful completion of MRI testing were compared among 5- to 12-year-olds who underwent brain MRI or liver R2*MRI with or without receiving PSP. Seventy-one children with SCD (median age 9.85 years, range 5.57-12.99 years) underwent a brain MRI (n = 60) or liver R2*MRI (n = 11). Children who received PSP were more likely to complete an interpretable MRI exam than those who did not 30 of 33; 91% vs. 27 of 38; 71%, unadjusted OR = 4.1 (P = 0.04) and OR = 8.5 (P < 0.01) when adjusting for age. PSP can help young children with SCD complete clinically interpretable, nonsedated MRI exams, avoiding the risks of sedation/anesthesia. (orig.)

  15. 复杂地质和地形环境下的基坑支护技术%SUPPORT TECHNOLOGY OF FOUNDATION EXCAVATION UNDER COMPLEX GEOLOGICAL AND TOPOGRAPHICAL CONDITIONS

    Institute of Scientific and Technical Information of China (English)

    陈安生; 黄国良

    2011-01-01

    某建筑的基坑工程开挖面积大,开挖范围内土层分布差异大,地质情况复杂,周边邻近建筑物、市政道路和斜山坡地等环境不同。根据场地条件,基坑采用7个代表性支护剖面进行联合支护,支护结构既切实际又经济合理;分析基坑施工面临挖孔桩流泥、排桩间塌陷、长边效应、斜山坡加固和防空洞等施工难点,并且制定相应的解决措施;通过开展基坑施工安全监测,有效地实施信息化设计与施工,保证了基坑和周边环境的安全。%Foundation excavation of a construction has a large area excavation,large differences within the soil layer,complex geological conditions,the surroundings being adjacent to buildings,urban roads,ramp slopes,and other different environments.According to the conditions of site,foundation excavation support is divided into seven representative profile to joint support,the support structure is both realistic and economically rational.It is analyzed the construction difficulties such as doing an excavation facing the flow of mud pile,collapse between piles,long side effects,hillside reinforcement and the existing shelter etc;and the corresponding measures are worked out.By carring out safety monitoring of foundation excavation construction,using informational design and constructional technology,the safety of foundation excavation and the surrounding environment is ensured.

  16. 盆式挖土施工时基坑支护的监测与分析%Monitoring and Analyzing of Foundation pit Support and Protection during Basin Earthwork Excavation

    Institute of Scientific and Technical Information of China (English)

    吴泳川; 丁克胜; 杨宝珠; 王沛; 靳彬

    2001-01-01

    介绍地下连续墙内支撑支护结构的深基坑施工中,进行盆式挖土时,支护结构的监测情况及对监测中所发现各种异常现象的分析与处理。%In this article,authors introduce the monitoring of supporting and protecting structure,analyses and treatments of abnormal phenomena during basin earthwork excavation in the construction of supporting and protecting structures in underground continuous wall in deep foundation ditch.

  17. Effects of preparation variables of supported-cobalt catalysts on the selective hydrogenation of. alpha. ,. beta. -unsaturated aldehydes

    Energy Technology Data Exchange (ETDEWEB)

    Nitta, Yuriko; Hiramatsu, Yoshifumi; Imanaka, Toshinobu (Osaka Univ., Toyonaka (Japan))

    1990-11-01

    The effects of starting salts, supports, added amount of Na{sub 2}CO{sub 3}, and other precipitation variables on catalytic properties of supported cobalt catalysts were studied for the hydrogenation of cinnamaldehyde and crotonaldehyde by using TGA, XRD, and XPS. The catalysts prepared from cobalt chloride always exhibited high selectivities to unsaturated alcohols irrespective of the support employed. The amount of surface chlorine remaining after H{sub 2}-reduction of the Co/SiO{sub 2} precursors prepared from cobalt chloride decreased with increasing amount of Na{sub 2}CO{sub 3} added as the precipitant, and both activity and selectivity reached maxima at around Cl/Co = 0.2 in the catalyst surface. The enhanced selectivity of the catalyst prepared from cobalt chloride was explained by the effects of residual chlorine both in the H{sub 2}-reduction stage and in the reaction stage; the former leads to a favorable crystallite size distribution (CDS) of cobalt and the latter depresses the hydrogenation of C{double bond}C double bond. The difference in activities and selectivities of various supported catalysts prepared from cobalt nitrate was discussed based on the difference in the strength of metal-support interaction which leads to different CDSs of cobalt in theses catalysts.

  18. Caring for America's Colleges and Universities: Stewardship Lessons from the Getty Foundation Campus Heritage Initiative

    Science.gov (United States)

    Melnick, Robert Z.

    2011-01-01

    The purpose of the Getty Foundation's Campus Heritage Initiative was to assist colleges and universities in the United States in managing and preserving the integrity of their significant historic buildings, sites, and landscapes. The projects supported through this initiative focused on research and survey of historic resources, preparation of…

  19. Design and Construction of Foundation Excavation Supporting with Complex Geological Condition in Shanghai Center Area%上海中心城区复杂地质条件下基坑围护设计与施工

    Institute of Scientific and Technical Information of China (English)

    王英锐; 董红霞; 黄新林

    2011-01-01

    The environment around center area of Shanghai become more complex. By researching classical foundation excavation project, the design and construction of foundation excavation supporting is analyued. In soft soil area the excavated foundation always faced to several conditions nearby, such as surrounding buildings piplines and underground structures. So it is important to take useful protect methods. FEA method is used to solve the condition of foundation excavation. And the effect of retaining structure is studied. In the project several technical methods are used to meet the stability control about boundary displacement. The construction control of foundation excavation engineering is a complicated system engineering, so monitoring data are analyzed to control the construction process. It proves that specific design can improve feasibility of design and flexibility of construction.%对上海中心城区复杂地况的基坑围护设计与施工进行分析,研究在软土地区,尤其具有多个复杂边界条件,不同邻近建筑、管线和地下构筑物,采取对应的避让和保护措施.运用有限元方法模拟开挖过程中无撑断面的土体围护效果.结合实例分析喷锚及有限支撑措施,重力式挡土墙技术.结合坑内多种加固技术进行组合运用,达到边界位移的稳定性控制.同时为了评价基坑围护的稳定性效果,分析了原位土体位移监测数据.结果表明采用针对性设计,可提高设计的可行性及施工的灵活性.

  20. International comparisons of Foundation Phase number domain ...

    African Journals Online (AJOL)

    Hennie

    curriculum for the preparation of Foundation Phase teachers in mathematics. This state of affairs is ... (Graham-Jolly, 2009) – and the teaching approach was behaviouristic ..... open coding, we searched for anything relevant that would fit under ...

  1. The Danish Industrial Foundations

    DEFF Research Database (Denmark)

    Thomsen, Steen

    Industrial foundations are foundations that own companies. Typically, they combine charitable and business goals. This book is about industrial foundation ownership of business companies and what we can learn about it from the Danish evidence. It is about how foundation ownership is ruled, taxed...... and governed, what role it plays in the Danish economy, and how industrial foundation-owned companies perform. The book is the result of a large collaborative research project, led by the author, on industrial foundations. Some global companies such as IKEA, Robert Bosch or the Tata Group are foundation...

  2. Selective, ultrathin membrane skins prepared by deposition of novel polymer films on porous alumina supports

    Science.gov (United States)

    Balachandra, Anagi Manjula

    Membrane-based separations are attractive in industrial processes because of their low energy costs and simple operation. However, low permeabilities often make membrane processes uneconomical. Since flux is inversely proportional to membrane thickness, composite membranes consisting of ultrathin, selective skins on highly permeable supports are required to simultaneously achieve high throughput and high selectivity. However, the synthesis of defect-free skins with thicknesses less than 50 nm is difficult, and thus flux is often limited. Layer-by-layer deposition of oppositely charged polyelectrolytes on porous supports is an attractive method to synthesize ultrathin ion-separation membranes with high flux and high selectivity. The ion-transport selectivity of multilayer polyelectrolyte membranes (MPMs) is primarily due to Donnan exclusion; therefore increase in fixed charge density should yield high selectivity. However, control over charge density in MPMs is difficult because charges on polycations are electrostatically compensated by charges on polyanions, and the net charge in the bulk of these films is small. To overcome this problem, we introduced a templating method to create ion-exchange sites in the bulk of the membrane. This strategy involves alternating deposition of a Cu2+-poly(acrylic acid) complex and poly(allylamine hydrochloride) on a porous alumina support followed by removal of Cu2+ and deprotonation to yield free -COO- ion-exchange sites. Diffusion dialysis studies showed that the Cl-/SO42-. Selectivity of Cu2+-templated membranes is 4-fold higher than that of membranes prepared in the absence of Cu2+. Post-deposition cross-linking of these membranes by heat-induced amide bond formation further increased Cl-/SO42- selectivity to values as high as 600. Room-temperature, surface-initiated atom transfer radical polymerization (ATRP) provides another convenient method for formation of ultrathin polymer skins. This process involves attachment of

  3. Preparation and Ongoing Support for Early Childhood Instructional Coaches: A Case Study Exploration of an Instructional Coaching Program

    Science.gov (United States)

    Allard Agnamba, Lindsey Tara

    2012-01-01

    This study gathers current information about the preparation and ongoing support of instructional coaches who provide professional development to early childhood educators. The case study of one large, urban District early childhood instructional coaching program will be explored with two objectives: to identify strengths and areas of need in the…

  4. The Effects of Teacher Background, Teacher Preparation, and Support on Attitudes and Expectations of K-12 Urban Music Educators

    Science.gov (United States)

    Doyle, Jennifer L.

    2012-01-01

    The purpose of this study was to determine the effects of personal and professional background factors, teacher preparation, and support on urban music teacher disposition. Specifically, the study aimed to examine the status of K-12 urban music education; verify the psychometric appropriateness of the researcher-created survey instrument; analyze…

  5. Toward a Treasure Landscape Decision Support Tool to Safeguard Priority Fish and Wildlife Populations in the Mississippi Alluvial Valley-Phase I: Targeting Walton Family Foundation Grant

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Phase I integrates a reforestation decision support model for priority forest breeding birds and a restoration decision support tool for the federally Threatened...

  6. Declining Support for Higher-Education Leadership Preparation Programs: An Analysis

    Science.gov (United States)

    Cibulka, James G.

    2009-01-01

    University-based leadership preparation programs no longer enjoy a near monopoly on the right to prepare school principals and other administrative leaders, and now compete with a growing number of alternative providers. This article utilizes the new institutionalism literature to analyze this shift. Practitioners and policymakers demanded reforms…

  7. ASPRO and its user's support: the JMMC tools for preparing VLTI Observations

    Science.gov (United States)

    Duchene, Gaspard; Berger, Jean-Philippe; Zins, Gerard; Duvert, Gilles

    2004-12-01

    We will present an overview of the main features of the current and next (to be released at the end of the summer) versions of the ASPRO software that are being developed by the JMMC to prepare VLTI observing programs. To help ASPRO users prepare their AMBER and MIDI proposals, an active helpdesk will also be available.

  8. Progress of the Application of Mesoporous Silica-Supported Heteropolyacids in Heterogeneous Catalysis and Preparation of Nanostructured Metal Oxides

    Directory of Open Access Journals (Sweden)

    Heyong He

    2010-01-01

    Full Text Available Mesoporous silica molecular sieves are a kind of unique catalyst support due to their large pore size and high surface area. Several methods have been developed to immobilize heteropolyacids (HPAs inside the channels of these mesoporous silicas. The mesoporous silica-supported HPA materials have been widely used as recyclable catalysts in heterogeneous systems. They have shown high catalytic activities and shape selectivities in some reactions, compared to the parent HPAs in homogeneous systems. This review summarizes recent progress in the field of mesoporous silica-supported HPAs applied in the heterogeneous catalysis area and preparation of nanostructured metal oxides using HPAs as precursors and mesoporous silicas as hard templates.

  9. The role of hydrothermally prepared supported photocatalytic composite in organic micro-pollutants removal from the water.

    Science.gov (United States)

    Shivaraju, H P; Byrappa, K

    2012-07-01

    This work deals with the non-biodegradable micro-pollutants degradation by supported photocatalyst based heterogeneous photocatalytic reaction. TiO2 based supported photocatalyst was prepared by the hydrothermal technique to improve the photocatalytic performance along with easy recovery of suspended photocatalyst from aqueous medium after photoreaction. TO2 deposited calcium alumino-silicate beads (CASB) supports were prepared under mild hydrothermal conditions (Temparature-200 degrees C, Duration-24 h). In the present study, industrial dyes such as Amaranth and Brilliant Yellow were used as model micro-pollutants in aqueous solution. A real time pesticide industrial effluent was tested for its photocatalytic removal of organic pollutants using TO2 deposited CASB supported photocatalytic composite as an effective photocatalyst. Photocatalytic degradation of micro-pollutants present in aqueous medium was carried out in a batch photoreactor, at atmospheric pressure and temperature (28 degrees C). The influence of different light sources, irradiation time, catalyst load and catalytic performance is discussed. The photocatalytic degradation of micro-pollutants in aqueous medium was evaluated by determination of COD and %T. Easy separation and recovery of suspended photocatalysts from aqueous solution is the major advantage of hydrothermally prepared supported photocatalytic composite.

  10. Preparing the Dutch delta for future droughts: model based support in the national Delta Programme

    Science.gov (United States)

    ter Maat, Judith; Haasnoot, Marjolijn; van der Vat, Marnix; Hunink, Joachim; Prinsen, Geert; Visser, Martijn

    2014-05-01

    Keywords: uncertainty, policymaking, adaptive policies, fresh water management, droughts, Netherlands, Dutch Deltaprogramme, physically-based complex model, theory-motivated meta-model To prepare the Dutch Delta for future droughts and water scarcity, a nation-wide 4-year project, called Delta Programme, is established to assess impacts of climate scenarios and socio-economic developments and to explore policy options. The results should contribute to a national adaptive plan that is able to adapt to future uncertain conditions, if necessary. For this purpose, we followed a model-based step-wise approach, wherein both physically-based complex models and theory-motivated meta-models were used. First step (2010-2011) was to make a quantitative problem description. This involved a sensitivity analysis of the water system for drought situations under current and future conditions. The comprehensive Dutch national hydrological instrument was used for this purpose and further developed. Secondly (2011-2012) our main focus was on making an inventory of potential actions together with stakeholders. We assessed efficacy, sell-by date of actions, and reassessed vulnerabilities and opportunities for the future water supply system if actions were (not) taken. A rapid assessment meta-model was made based on the complex model. The effects of all potential measures were included in the tool. Thirdly (2012-2013), with support of the rapid assessment model, we assessed the efficacy of policy actions over time for an ensemble of possible futures including sea level rise and climate and land use change. Last step (2013-2014) involves the selection of preferred actions from a set of promising actions that meet the defined objectives. These actions are all modeled and evaluated using the complex model. The outcome of the process will be an adaptive management plan. The adaptive plan describes a set of preferred policy pathways - sequences of policy actions - to achieve targets under

  11. A comparative study of differently prepared rare earths-modified ceria-supported gold catalysts for preferential oxidation of CO

    Energy Technology Data Exchange (ETDEWEB)

    Ilieva, L.; Ivanov, I.; Andreeva, D. [Institute of Catalysis, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Bl. 11, 1113 Sofia (Bulgaria); Pantaleo, G.; Venezia, A.M. [Istituto per lo Studio dei Materiali Nanostrutturati, CNR, I-90146 Palermo (Italy); Zanella, R. [Centro de Ciencias Aplicadas y Desarrollo Tecnologico, Universidad Nacional Autonoma de Mexico, Circuito Exterior S/N, Ciudad Universitaria, C.P. 04510, Mexico D. F. (Mexico)

    2009-08-15

    The preferential oxidation of CO in H{sub 2}-rich gas was studied over gold catalysts supported on ceria modified by rare earths (RE = La, Sm, Gd and Y). The ceria supports were prepared by mechanochemical activation or co-precipitation. The amount of RE{sub 2}O{sub 3} was 10 wt%. Gold (2 wt%) was added by the deposition-precipitation method. The samples were characterized using XRD, HRTEM, HAADF, TPR, and Raman spectroscopy. It was established that catalysts prepared by co-precipitation were more active than samples made by mechanochemical activation. A gold catalyst on yttrium-modified ceria, prepared by co-precipitation, exhibited the highest catalytic activity and selectivity, and high stability. No substantial differences in the size distribution and average size of the nanogold particles in the studied catalysts were observed. The main reason for the differences in PROX activity of these gold catalysts was searched into the role of the ceria supports, depending on the preparation method, and the nature of the modifier. (author)

  12. Theoretical foundations for collaboration engineering

    NARCIS (Netherlands)

    Kolfschoten, G.L.

    2007-01-01

    Collaboration is often presented as the solution to numerous problems in business and society. However, collaboration is challenging, and collaboration support is not an off-the-shelf-product. This research offers theoretical foundations for Collaboration Engineering. Collaboration Engineering is an

  13. Cornelia de Lange Syndrome Foundation

    Science.gov (United States)

    ... org Outside Links Privacy & Terms Site Map The Cornelia de Lange Syndrome (CdLS) Foundation is a family support organization that exists to ensure early and accurate diagnosis of CdLS, promote ... a diagnosis of CdLS make informed decisions throughout their lives.

  14. The design and construction of foundation pit supporting in subway station underground parking%地铁车站地下停车场基坑支护设计与施工

    Institute of Scientific and Technical Information of China (English)

    白峰

    2015-01-01

    对地铁车站地下停车场水文地质情况进行了分析,提出了采用放坡+土钉墙、灌注桩+内支撑、双排桩对基坑分段进行支护的方案,并阐述了各环节的施工要点,经工程实践,基坑支护结构安全稳定,达到了基坑支护效果,为类似工程积累了经验。%To the subway station underground parking lot hydrogeology conditions are analyzed,and proposed use of the grading+soil nail wall, bored piles+inner support,double pile segments performed excavation methods,and expounds the construction points of each link. The engi-neering practice,the security and stability of foundation pit supporting structure,achieve the effect of foundation pit supporting,accumulated ex-perience for similar projects.

  15. Preparation of Mesoporous SBA-16 Silica-Supported Biscinchona Alkaloid Ligand for the Asymmetric Dihydroxylation of Olefins

    Directory of Open Access Journals (Sweden)

    Shaheen M. Sarkar

    2014-01-01

    Full Text Available Optically active cinchona alkaloid was anchored onto mesoporous SBA-16 silica and the as-prepared complex was used as a heterogeneous chiral ligand of osmium tetraoxide for the asymmetric dihydroxylation of olefins. The prepared catalytic system provided 90–93% yield of vicinal diol with 92–99% enantioselectivity. The ordered mesoporous SBA-16 silica was found to be a valuable support for the cinchona alkaloid liganded osmium catalyst system which is frequently used in chemical industries and research laboratories for olefin functionalization.

  16. CuO/CeO{sub 2} catalysts prepared with different cerium supports for CO oxidation at low temperature

    Energy Technology Data Exchange (ETDEWEB)

    Lu, Chi-Yuan [School of Public Health, Chung Shan Medical University, Taichung 402, Taiwan, ROC (China); Department of Occupational Medicine, Chung Shan Medical University Hospital, Taichung 402, Taiwan, ROC (China); Chang, Wen-Chi [Department of Environmental Engineering, National Chung Hsing University, Taichung 402, Taiwan, ROC (China); Wey, Ming-Yen, E-mail: mywey@dragon.nchu.edu.tw [Department of Environmental Engineering, National Chung Hsing University, Taichung 402, Taiwan, ROC (China)

    2013-08-15

    The activity of a catalyst depends on the nature of its support, its active site, and its preparation method. This study aimed to employ various types of CeO{sub 2} supports such as commercial CeO{sub 2} and self-prepared CeO{sub 2} for the preparation of copper catalysts. The CuO/CeO{sub 2} catalysts were prepared using the polyol process and impregnation method. The catalysts were characterized using Brunauer–Emmett–Teller analysis, scanning electron microscopy, and X-ray analysis, and their catalytic activity for CO removal was evaluated in a microcatalytic reactor. The experimental results showed that the catalytic activity of the CuO/CeO{sub 2} catalysts with different calcination temperatures decreased in the following order: 500 °C > 300 °C > 700 °C. Compared to the impregnation method, the polyol process generated well-dispersed metal particles over the support and showed higher CO removal efficiency with low activation energy. Compared to CuO/CeO{sub 2} catalysts with commercial CeO{sub 2}, those with CeO{sub 2} that was self-prepared by pyrolysis had a large pore volume and good crystal structure of CeO{sub 2} and showed good performance. The catalytic activity for CO removal was in the following order: CuO/CeO{sub 2}-P (pyrolysis) > CuO/CeO{sub 2}-C (commercial) > CuO/CeO{sub 2}-D (deposition precipitation). CuO/CeO{sub 2}-P catalysts showed good activity even at low temperature. The CuO/CeO{sub 2}-P(300)-P-120 min catalyst was found to possess the good CO removal rate when the oxygen content was 6%, CO concentration was 500 ppm, catalyst weighed 1.0 g, pollutant gas velocity was 500 mL min{sup −1}, SV was 3.7 × 10{sup 4} h{sup −1}, and reaction temperature was 150 °C. - Highlights: • CuO/CeO{sub 2} catalysts were prepared using polyol and impregnation methods. • The supports of catalyst were self-prepared cerium oxide and commercial cerium oxide. • Pyrolysis and deposition precipitation methods were used for cerium preparation.

  17. Preparation of Peptide p-Nitroanilides using an Aryl Hydrazine Solid Support

    Energy Technology Data Exchange (ETDEWEB)

    Kwon, Y; Welsh, K; Mitchell, A R; Camarero, J A

    2004-08-05

    Peptide p-nitroanilides are useful compounds for studying protease activity, however the poor nucleophilicity of p-nitroaniline makes their preparation difficult. We describe a new efficient approach for the Fmoc-based synthesis of peptide p-nitroanilides using an aryl hydrazine resin. Mild oxidation of the peptide hydrazide resin yields a highly reactive acyl diazene, which efficiently reacts with weak nucleophiles. We have prepared several peptide p-nitroanilides, including substrates for the Lethal Factor protease from B. anthracis.

  18. Kessler Foundation Research Center

    Science.gov (United States)

    ... you, Kessler Foundation researchers have been studying wearable robotic exoskeletons in people with paralysis and weakness, and ... info@kesslerfoundation.org Kessler Foundation 2015 © | accessibility statement | careers | privacy policy | press releases

  19. American Hospice Foundation

    Science.gov (United States)

    American Hospice Foundation Skip to content Home Caregiving Learning About Hospice Grief Grieving Children Grief at School Grief at ... for all who come after us. The American Hospice Foundation (AHF) closed its doors in June 2014. ...

  20. Pediatric Brain Tumor Foundation

    Science.gov (United States)

    ... you insights into your child's treatment. LEARN MORE Brain tumors and their treatment can be deadly so ... Cancer Foundation joins the PBTF Read more >> Pediatric Brain Tumor Foundation 302 Ridgefield Court, Asheville, NC 28806 ...

  1. Cooley's Anemia Foundation

    Science.gov (United States)

    ... role in their lives. Welcome to the Cooley's Anemia Foundation Website The Cooley's Anemia Foundation is dedicated to serving people afflicted with ... major form of this genetic blood disease, Cooley's anemia/thalassemia major. Our mission is advancing the treatment ...

  2. Foundation for Sarcoidosis Research

    Science.gov (United States)

    ... a Clinical Trial Our mission is to stop sarcoidosis — join us. The sarcoidosis community needs your help ... receive periodic emails from the Foundation. Foundation For Sarcoidosis Research 1820 W. Webster Ave., Ste 304 Chicago, ...

  3. American Vitiligo Research Foundation

    Science.gov (United States)

    ... life can acquire vitiligo Welcome to The American Vitiligo Foundation 2017 AVRF Calendars Order your calendar with ... animal testing. Please Visit Our Donations Page American Vitiligo Research Foundation "We Walk By Faith, Not By ...

  4. Skin Cancer Foundation

    Science.gov (United States)

    ... Host a Fundraising Event | About Us | Store The Skin Cancer Foundation The Skin Cancer Foundation is the only ... Handbook A "Sunscreen Gene"? Skin Cancer Facts & Statistics Skin Cancer Treatment Glossary Information on medications and procedures The ...

  5. Toxicology Education Foundation

    Science.gov (United States)

    ... bodies and our world. Welcome to the Toxicology Education Foundation! Our mission is to enhance public understanding ... In with us, follow our Tweets, choose Toxicology Education Foundation as your preferred charity through Smile.Amazon. ...

  6. Selective Preparation of trans-Carveol over Ceria Supported Mesoporous Materials MCM-41 and SBA-15

    Directory of Open Access Journals (Sweden)

    Nariman F. Salakhutdinov

    2013-05-01

    Full Text Available Ce-modified mesoporous silica materials MCM-41 and SBA-15, namely 32 wt % Ce–Si–MCM-41, 16 wt % Ce–H–MCM-41 and 20 wt % Ce–Si–SBA-15, were prepared, characterized and studied in the selective preparation of trans-carveol by α-pinene oxide isomerization. The characterizations of these catalysts were performed using scanning electron microscopy, X-ray photoelectron spectroscopy, nitrogen adsorption and FTIR pyridine adsorption. Selective preparation of trans-carveol was carried out in the liquid phase in a batch reactor. The activity and the selectivity of catalyst were observed to be influenced by their acidity, basicity and morphology of the mesoporous materials. The formation of trans-carveol is moreover strongly influenced by the basicity of the used solvent and in order to achieve high yields of this desired alcohol it is necessary to use polar basic solvent.

  7. Preparation of Palladium-Supported Periodic Mesoporous Organosilicas and their Use as Catalysts in the Suzuki Cross-Coupling Reaction

    Directory of Open Access Journals (Sweden)

    Francisco J. Romero-Salguero

    2013-04-01

    Full Text Available Three periodic mesoporous materials, i.e., two organosilicas with either ethylene or phenylene bridges and one silica, have been used as supports for Pd nanoparticles. All Pd-supported samples (1.0 wt% were prepared by the incipient wetness method and subsequently reduced in an H2 stream at 200 °C. Both hydrogen chemisorption and temperature programmed reduction experiments revealed significant differences depending on the support. Pd2+ species were more reducible on the mesoporous organosilicas than on their silica counterpart. Also, remarkable differences on the particle morphology were observed by transmission electron microscopy. All Pd-supported samples were active in the Suzuki cross-coupling reaction between bromobenzene and phenylboronic acid.

  8. Effect of kaolin particle size and loading on the characteristics of kaolin ceramic support prepared via phase inversion technique

    Directory of Open Access Journals (Sweden)

    Siti Khadijah Hubadillah

    2016-06-01

    Full Text Available In this study, low cost ceramic supports were prepared from kaolin via phase inversion technique with two kaolin particle sizes, which are 0.04–0.6 μm (denoted as type A and 10–15 μm (denoted as type B, at different kaolin contents ranging from 14 to 39 wt.%, sintered at 1200 °C. The effect of kaolin particle sizes as well as kaolin contents on membrane structure, pore size distribution, porosity, mechanical strength, surface roughness and gas permeation of the support were investigated. The support was prepared using kaolin type A induced asymmetric structure by combining macroporous voids and sponge-like structure in the support with pore size of 0.38 μm and 1.05 μm, respectively, and exhibited ideal porosity (27.7%, great mechanical strength (98.9 MPa and excellent gas permeation. Preliminary study shows that the kaolin ceramic support in this work is potential to gas separation application at lower cost.

  9. Preparation of Bimetallic PtnPdm Supported Clusters with Well-Defined Stoichiometry

    Science.gov (United States)

    Rousset, J. L.; Cadrot, A. M.; Aires, F. Santos; Renouprez, A.; Mélinon, P.; Perez, A.; Pellarin, M.; Vialle, J. L.; Broyer, M.

    Supported bimetallic Pd-Pt clusters with a well-defined stoichiometry are produced using a laser-vaporization source. Free clusters are also studied by time-of-flight mass spectrometry and photofragmentation. The supported clusters are characterized by energy dispersive x-ray analysis. The low binding energy of palladium atoms compared to that of platinum is clearly demonstrated in both free and supported clusters. The reactivity is briefly discussed.

  10. 简化模糊优选模型在深基坑支护选型中的应用%Application of simplified vague optimal model in the selection of deep foundation pit support

    Institute of Scientific and Technical Information of China (English)

    刘光寿

    2009-01-01

    以模糊数学理论为基础,通过最小二乘法准则构建目标层函数,从而建立模糊综合评价模型,得出基于模糊优选理论的基坑支护方案简化优选模型,并通过工程实例验证了该模型在基坑支护方案的选取中的适用性和可靠性,以期指导实际工程.%Based upon vague mathematical theory, it sets up goal functions with least-squares approach, so as to set up vague comprehensive e-valuation model. It gets the simplified optimal model of foundation pit support plan based upon vague optimal theory. Meanwhile, it verifies the suitability and reliability of this model in the selection of foundation pit supporting plan through projects, so as to guide the practice.

  11. Corporate Ownership by Industrial Foundations

    DEFF Research Database (Denmark)

    Thomsen, Steen

    1999-01-01

    Industrial foundations are self-governing non profit institutions that own business companies. This ownership structure is found in a fair number of Northern European companies, some of them successful world class competitors. Standard agency theory would predict foundation-owned companies...... to be relatively inefficient since they lack monitoring by residual claimants and access to equity finance from the stock market. Nevertheless, empirical research (Thomsen 1996) has found that Danish foundation-owned companies do no worse in terms of profitability and growth than companies with dispersed ownership...... or family ownership. The paper considers and tests alternative explanations of this paradox. Explanations based on tax incentives, alternative control mechanisms and product-market advantages are rejected, but some support is found for performance advantages related to family control and long term business...

  12. Application of Comprehensive Technology of Foundation Treatment and Supporting Design for Supperhigh Fill%超高填方地基处理及支护设计综合技术应用

    Institute of Scientific and Technical Information of China (English)

    黄广明; 李亚川; 张卫红; 孙运环

    2013-01-01

    A coking plant which being built in steel corporation locates in a high mountainous and deep gully area,and the geological condition of foundation is very complex. In order to level the field,the artifi-cial filled soil is needed in the deep gully area. Because artificial filled soil has the characteristics of une-ven,high compression,short-time accumulation,large porosity,middle-high collapsible, it need to treat by artificial foundation. The engineering fill used layered rolling and dynamic compaction to solve backfill,in order to improve the foundation bearing capacity,eliminate inhomogeneous deformation ,seismic liquefac-tion and collapsible, so it satisfied the requirement of foundation to buildings( construction) . The appli-cation of comprehensive technology are respectively introduced in the engineering ,including layered roll-ing, dynamic compaction method ,slope supporting design scheme ,foundation detection and so on.%某钢铁公司拟建焦化厂坐落于高山深沟壑区域,地基地质条件比较复杂。为平整场地需在深沟壑区域进行人工填土,由于人工填土有其不均匀性、压缩性较高、堆积时间短、孔隙度大、中等-强湿陷性等特点,需要进行人工地基处理。该工程填方采用分层碾压及强夯法处理回填体,以提高地基的承载能力、消除不均匀变形、地震液化和湿陷性等,以满足建(构)筑物对地基的要求。该文介绍了分层碾压、强夯处理方法、边坡支护设计方案及地基检测等综合技术在该工程中的应用。

  13. Construction Technology of Single-ring Reinforced Concrtet Beam Support of Deep Foundation Pit%深基坑支护单道钢筋混凝土环梁支撑施工技术

    Institute of Scientific and Technical Information of China (English)

    熊乾

    2001-01-01

    深基坑环梁护壁支撑结构具有安全、经济和能提供宽阔的施工空间等特点。本文叙述天津运城大厦单道环梁支撑结构(基坑开挖深度12.25m)的施工实践。%The ring beam supporting and protecting structure o f deep foundation ditch has such merits as safety, saving and being able to provide enough construction space. In this article,the author introduces the practice of single ring beam supporting structure in tianjin Yuncheng Mansion.

  14. The Monopod Bucket Foundation

    DEFF Research Database (Denmark)

    Bakmar, Christian LeBlanc; Ahle, Kim; Nielsen, Søren A.;

    2009-01-01

    Following the successful installation of a prototype of a monopod bucket foundation, also called a “monopod suction caisson”, at Horns Rev 2 Offshore Wind Farm, Denmark, in 2009, DONG Energy is currently developing a commercialization strategy. The monopod bucket foundation is a promising...... foundation concept for offshore wind turbines and can be installed using suction assisted penetration, combined with other installation methods. This selfinstalling foundation concept, may avoid the use of expensive jack-ups and scour protection, and thus significantly reduces installation costs. However......, further research, development and prototype testing are required, before the monopod bucket foundation can be commercialized....

  15. Bucket foundations:a literature review

    OpenAIRE

    Foglia, Aligi; Ibsen, Lars Bo

    2014-01-01

    In this report, bearing behaviour and installation of bucket foundations are reviewed. Different methods and standards are compared with the experimental data presented in Foglia and Ibsen (2014a). The most important studies on these topics are suggested. The review is focused on the response of monopod bucket foundations supporting offshore wind turbines.

  16. "I'm Just Kind of Winging It": Preparing and Supporting Educators of Adult Refugee Learners

    Science.gov (United States)

    Perry, Kristen H.; Hart, Susan J.

    2012-01-01

    In this qualitative case study, we explore local adult educators' preparation to teach refugees, along with their professional development needs. This analysis focuses on 10 tutors and instructors in a midsize Southeastern city. Data collection involved an open-ended questionnaire, semi-structured interviews, and observations; analysis involved…

  17. Engagement in Adolescent Career Preparation: Social Support, Personality and the Development of Choice Decidedness and Congruence

    Science.gov (United States)

    Hirschi, Andreas; Niles, Spencer G.; Akos, Patrick

    2011-01-01

    This longitudinal panel study investigated predictors and outcomes of active engagement in career preparation among 349 Swiss adolescents from the beginning to the end of eighth grade. Latent variable structural equation modeling was applied. The results showed that engagement in terms of self- and environmental-exploration and active career…

  18. Supporting Students' Preparation for the Viva: Their Pre-Conceptions and Implications for Practice

    Science.gov (United States)

    Wellington, Jerry

    2010-01-01

    There has been relatively little research on the pre-conceptions of doctoral students about the final examination, the viva voce and hence there is a shortage of evidence to underpin activities designed to prepare them for this experience. The present paper, which is based upon data from a wide range of focus groups of pre-viva students, seeks to…

  19. Controlled metal nitrate decomposition for the preparation of supported metal Catalysts

    NARCIS (Netherlands)

    Wolters, M.

    2010-01-01

    High surface area supported metal (oxide) catalysts are essential for the production of fuels, chemicals, pharmaceuticals and the abatement of environmental pollution. Impregnation of high surface area supports, often silica or alumina, followed by drying, calcination and reduction is one of the

  20. Preparing School Counselors to Support LGBT Youth: The Roles of Graduate Education and Professional Development

    Science.gov (United States)

    Kull, Ryan M.; Kosciw, Joseph G.; Greytak, Emily A.

    2017-01-01

    This study examined whether school counselors' LGBT-related graduate education and professional development predicted more frequent efforts to support LGBT students, and whether their LGBT-related self-efficacy mediated the relationship between their training experiences and supportive efforts. Results from ordinary least squares (OLS) regression…

  1. Online learning communities can provide support for nurses preparing for certification examinations.

    Science.gov (United States)

    Pethtel, Pam

    2005-01-01

    Achieving certification is a benefit to the nurses, to their patients, and to the organizations that support them. Developing an online learning community is a simple way for the institution to offer support to the nursing staff. Providing the resources for creation of online learning communities demonstrates the facility's commitment to communication, education, and professional development.

  2. Controlled metal nitrate decomposition for the preparation of supported metal Catalysts

    NARCIS (Netherlands)

    Wolters, M.

    2010-01-01

    High surface area supported metal (oxide) catalysts are essential for the production of fuels, chemicals, pharmaceuticals and the abatement of environmental pollution. Impregnation of high surface area supports, often silica or alumina, followed by drying, calcination and reduction is one of the mos

  3. A Survey of School Psychologists' Preparation, Participation, and Perceptions Related to Positive Behavior Interventions and Supports

    Science.gov (United States)

    Sullivan, Amanda L.; Long, Lori; Kucera, Miranda

    2011-01-01

    Positive behavior interventions and supports are increasingly utilized in school systems throughout the nation, particularly the school-wide multi-tiered support framework. Given such trends, and the basis of these practices in psychological principles and research, it is important to identify how school psychologists are trained to contribute to…

  4. Environmental Foundations in Germany

    Directory of Open Access Journals (Sweden)

    Thomas Krikser

    2015-05-01

    Full Text Available Foundations in Germany were examined in the context of environmental issues. Data from environmental foundations show that there is huge difference between private and public foundations concerning financial settings. Furthermore, environment is often not the only objective and sometimes not even processed. Our analysis shows that there are different types of foundations with regard to environmental scopes and activities. Although “attractive topics” such as biodiversity and landscape conservation seem to be more important to foundations, less visible topics such as pollution prevention remain merely a “blind spot.” Together, these findings suggest that there is only a limited potential of private foundations compared with public foundations. Nevertheless, there might be an impact on environmental awareness and local sustainability.

  5. Using Social Impact Games (SIGS) to Support Constructivist Learning: Creating a Foundation for Effective Use in the Secondary Social Studies Education

    Science.gov (United States)

    Ray, Beverly; Faure, Caroline; Kelle, Fay

    2013-01-01

    This paper examines how Social Impact Games (SIGs) can provide important instructional support in secondary social studies classrooms. When used within the framework of the constructivist teaching philosophy and teaching methods, as recommended by the NCSS (2010), SIGs have the potential to hone critical thinking, collaboration, and problem…

  6. Using Social Impact Games (SIGS) to Support Constructivist Learning: Creating a Foundation for Effective Use in the Secondary Social Studies Education

    Science.gov (United States)

    Ray, Beverly; Faure, Caroline; Kelle, Fay

    2013-01-01

    This paper examines how Social Impact Games (SIGs) can provide important instructional support in secondary social studies classrooms. When used within the framework of the constructivist teaching philosophy and teaching methods, as recommended by the NCSS (2010), SIGs have the potential to hone critical thinking, collaboration, and problem…

  7. Measuring the Foundations of School Readiness: Introducing a New Questionnaire for Teachers--The Brief Early Skills and Support Index (BESSI)

    Science.gov (United States)

    Hughes, Claire; Daly, Irenee; Foley, Sarah; White, Naomi; Devine, Rory T.

    2015-01-01

    Background: Early work on school readiness focused on academic skills. Recent research highlights the value of also including both children's social and behavioural competencies and family support. Aims: Reflecting this broader approach, this study aimed to develop a new and brief questionnaire for teachers: The Brief Early Skills and Support…

  8. Open access support groups for people experiencing personality disorders: do group members' experiences reflect the theoretical foundations of the SUN project?

    Science.gov (United States)

    Gillard, Steve; White, Rachel; Miller, Steve; Turner, Kati

    2015-03-01

    The SUN Project is an innovative, open access support group, based in the community, for people experiencing personality disorders, developed in response to UK Department of Health policy advocating improvements in personality disorders services. The aim of this article is to critically explore where and how the theoretically informed model underpinning the SUN Project is reflected in the view and experiences of people attending the project. This article reports an in-depth, qualitative interview-based study employing a critical realist approach. As part of a larger study about self-care and mental health, in-depth qualitative interviews were held with 38 people new to the SUN Project, and again 9 months later. Data were extracted that were relevant to core components of the project model and were subjected to thematic analysis. The critical realist approach was used to move back and forth between empirical data and theory underpinning the SUN project, providing critical insight into the model. Participant accounts were broadly concordant with core components of the SUN Project's underlying model: Open access and self-referral; group therapeutic processes; community-based support; service users as staff. There were some tensions between interviewee accounts and theoretical aspects of the model, notably around the challenges that group processes presented for some individuals. The model underlying the SUN Project is useful in informing good practice in therapeutic, community-based peer support groups for people experiencing personality disorders. Careful consideration should be given to a limited multi-modal approach, providing focused one-to-one support for vulnerable individuals who find it hard to engage in group processes. Facilitated peer support groups based in the community may act as a powerful therapeutic resource for people experiencing personality disorders. Promoting open access and self-referral to support groups may increase feelings of empowerment and

  9. New methodology of preparation support for solid oxide fuel cells using different pore forming agent

    Energy Technology Data Exchange (ETDEWEB)

    Fiuza, Raigenis da P.; Guedes, Bruna C.F.; Silva, Marcos A. da; Carvalho, Luiz F.V. de; Boaventura, Jaime S. [Universidade Federal da Bahia (IQ/UFBA), Salvador, BA (Brazil). Inst. de Quimica; Pontes, Luiz A.M. [Universidade Federal da Bahia (EP/UFBA), Salvador, BA (Brazil). Escola Politecnica. Programa de Pos-Graduacao em Engenharia Quimica

    2008-07-01

    The development of environment-friendly energy sources has been of the most important scientific and technological area. Solid oxide fuel cells (SOFC) are very promising alternative for their ability to handle renewable fuels with low emissions and high efficiency. However, this device requires massive improvement before commercial application. This work studies the pore formation in the cell anode and cathode with NaHCO{sub 3} or citric acid, comparing to graphite. The three agents make pore with similar features, but the use of NaHCO{sub 3} and citric acid considerably improves the adhesion of the electrode-electrolyte interface, critical characteristic for good cell efficiency. The prepared anode-electrolyte-cathode structure was studied by SEM technique. The SOFC prepared using citric acid was tested with gaseous ethanol, natural gas and hydrogen. For all these three fuels the SOFC shows virtually no overpotential, indicating the good ionic conductance of the electrodes-electrolyte interface.. (author)

  10. Preparation of Mesoporous Silica-Supported Palladium Catalysts for Biofuel Upgrade

    OpenAIRE

    Ling Fei; Harvind Kumar Reddy; Joshua Hill; Qianglu Lin; Bin Yuan; Yun Xu; Peter Dailey; Shuguang Deng; Hongmei Luo

    2012-01-01

    We report the preparation of two hydrocracking catalysts Pd/CoMoO4/silica and Pd/CNTs/CoMoO4/silica (CNTs, carbon nanotubes). The structure, morphologies, composition, and thermal stability of catalysts were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy, transmission electron microscopy (TEM), energy-dispersive X-ray (EDX), and thermogravimetric analysis (TGA). The catalyst activity was measured in a Parr reactor with camelina fatty acid methyl est...

  11. Vertically aligned nanowires on flexible silicone using a supported alumina template prepared by pulsed anodization

    DEFF Research Database (Denmark)

    Mátéfi-Tempfli, Stefan; Mátéfi-Tempfli, M.

    2009-01-01

    Carpets of vertically aligned nanowires on flexible substrates are successfully realized by a template method. Applying special pulsed anodization conditions, defect-free nanoporous alumina structures supported on polydimethylsiloxane (PDMS), a flexible silicone elastomer, are created. By using...

  12. Dementia service centres in Austria: A comprehensive support and early detection model for persons with dementia and their caregivers - theoretical foundations and model description.

    Science.gov (United States)

    Auer, Stefanie R; Span, Edith; Reisberg, Barry

    2015-07-01

    Despite the highly developed social services in Austria, the County of Upper Austria, one of the nine counties of Austria had only very limited specialized services for persons with dementia and their caregivers in 2001. Support groups existed in which the desire for more specialized services was voiced. In response to this situation, funding was received to develop a new structure for early disease detection and long term support for both the person with dementia and their caregivers. This article describes the development of the model of the Dementia Service Centres (DSCs) and the successes and difficulties encountered in the process of implementing the model in six different rural regions of Upper Austria. The DSC was described in the First Austrian Dementia Report as one of the potential service models for the future.

  13. Organizational factors and mental health in community volunteers. The role of exposure, preparation, training, tasks assigned, and support.

    Science.gov (United States)

    Thormar, Sigridur Bjork; Gersons, Berthold P R; Juen, Barbara; Djakababa, Maria Nelden; Karlsson, Thorlakur; Olff, Miranda

    2013-01-01

    During disasters, aid organizations often respond using the resources of local volunteer members from the affected population who are not only inexperienced, but who additionally take on some of the more psychologically and physically difficult tasks in order to provide support for their community. Although not much empirical evidence exists to justify the claim, it is thought that preparation, training, and organizational support limit (or reduce) a volunteer's risk of developing later psychopathology. In this study, we examined the effects of preparation, training, and organizational support and assigned tasks on the mental health of 506 Indonesian Red Cross volunteers who participated in the response to a massive earthquake in Yogyakarta, Indonesia, in 2006. Controlling for exposure level, the volunteers were assessed for post-traumatic stress disorder (PTSD), anxiety, depression, and subjective health complaints (SHCs) 6, 12, and 18 months post-disaster. Results showed high levels of PTSD and SHCs up to 18 months post-disaster, while anxiety and depression levels remained in the normal range. Higher levels of exposure as well as certain tasks (e.g., provision of psychosocial support to beneficiaries, handling administration, or handing out food aid) made the volunteers more vulnerable. Sense of safety, expressed general need for support at 6 months, and a lack of perceived support from team leaders and the organization were also related to greater psychopathology at 18 months. The results highlight the importance of studying organizational factors. By incorporating these results into future volunteer management programs the negative effects of disaster work on volunteers can be ameliorated.

  14. Alumina-Supported Manganese Catalysts for Soot Combustion Prepared by Thermal Decomposition of KMnO4

    Directory of Open Access Journals (Sweden)

    Agustin Bueno-López

    2012-09-01

    Full Text Available Alumina-supported manganese catalysts with cryptomelane and/or birnessite structure have been prepared using a simple method based on the thermal decomposition of potassium permanganate. The samples have been characterized by XRD, FTIR, TGA, DSC, N2 adsorption at −196 °C, SEM, H2-TPR and XPS, and their catalytic activity for soot combustion has been tested and compared to that of a reference Pt/alumina catalyst. The thermal decomposition of alumina-supported KMnO4 yields a mixture of supported birnessite and potassium manganate which is the most effective, among those prepared, to lower the soot combustion temperature. However, this material is not useful for soot combustion because the accelerating effect is not based on a catalytic process but on the oxidation of soot by potassium manganate. A suitable soot combustion catalyst is obtained after potassium manganate is removed by water washing, yielding only the birnessite phase on the γ-Al2O3 support. This birnessite phase can be transformed into cryptomelane by calcination at 600 °C. These two samples, γ-Al2O3-supported birnessite and cryptomelane are suitable catalysts for soot combustion in NOx/O2 mixtures, as their catalytic activity is based on the NO2-assited mechanism, that is, both catalysts accelerate the oxidation of NO to NO2 and NO2 promotes soot oxidation. The soot combustion temperatures obtained with these birnessite/cryptomelane alumina-supported catalysts are similar to that obtained with the reference Pt/alumina catalyst.

  15. Influence of preparation method on supported Cu-Ni alloys and their catalytic properties in high pressure CO hydrogenation

    DEFF Research Database (Denmark)

    Wu, Qiongxiao; Eriksen, Winnie L.; Duchstein, Linus Daniel Leonhard

    2014-01-01

    to impregnation, the coprecipitation and deposition-coprecipitation methods are more efficient for preparation of small and homogeneous Cu-Ni alloy nanoparticles. In order to examine the stability of Cu-Ni alloys in high pressure synthesis gas conversion, they have been tested for high pressure CO hydrogenation......Silica supported Cu-Ni (20 wt% Cu + Ni on silica, molar ratio of Cu/Ni = 2) alloys are prepared via impregnation, coprecipitation, and deposition- coprecipitation methods. The approach to co-precipitate the SiO2 from Na2SiO3 together with metal precursors is found to be an efficient way to prepare...... high surface area silica supported catalysts (BET surface area up to 322 m2 g-1, and metal area calculated from X-ray diffraction particle size up to 29 m2 g-1). The formation of bimetallic Cu-Ni alloy nanoparticles has been studied during reduction using in situ X-ray diffraction. Compared...

  16. Hydrogen production by ethanol steam reforming over Cu-Ni/SBA-15 supported catalysts prepared by direct synthesis and impregnation

    Energy Technology Data Exchange (ETDEWEB)

    Carrero, A.; Calles, J.A.; Vizcaino, A.J. [Department of Chemical and Environmental Technology, Rey Juan Carlos University, Escuela Superior de Ciencias Experimentales y Tecnologia (ESCET), c/Tulipan s/n, 28933 Mostoles (Spain)

    2007-07-31

    Cu-Ni/SBA-15 supported catalysts prepared by the incipient wetness impregnation method were tested in the ethanol steam reforming reaction for hydrogen production. The effect of reaction temperature and metal loading was studied in order to maximize the hydrogen selectivity and the CO{sub 2}/(CO + CO{sub 2}) molar ratio. The best catalytic performance was achieved at 600 C. Products distribution was the result of the combined effects of metal particles size, metal content and Ni/Cu ratio on the catalyst. In addition, two catalysts were prepared by the method of direct insertion of Ni and Cu in the initial stage of the SBA-15 synthesis. X-ray powder diffraction (XRD), transmission electron microscopy (TEM), N{sub 2}- adsorption and inductively coupled plasma atomic emission spectroscopy (ICP-AES) results evidenced that SBA-15 materials with long range hexagonal ordering were successfully synthesized in the presence of copper and nickel salts with the (Cu + Ni) contents around 4-6 wt.%. However, lower hydrogen selectivity as well as ethanol and water conversions were obtained with catalysts prepared by direct synthesis in comparison with those prepared by incipient wetness impregnation method. Particularly, the best catalytic results were achieved with a sample impregnated with 2 and 7 wt.% of copper and nickel, respectively. (author)

  17. PREPARATION OF SURFACE ION-IMPRINTED ATTAPULGITE-SUPPORTED POLYMER AND ITS ADSORPTION BEHAVIORS OF Sr(II)

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    The surface ion-imprinting concept and chitosan incorporated sol-gel process were applied to the preparation of a new attapulgite-supported organic-inorganic hybrid polymer for selective separation of Sr(II) from aqueous solution. The prepared polymer was characterized with SEM, IR and XRD. The results showed that as a sorbent, it had good configuration and binding sites. Its adsorption behaviors for Sr(II) was investigated by FAAS and ICP-AES. The effects on adsorption capacities, including pH, quiescent time, and adsorbent amount were discussed, and the adsorption isothermal curve was obtained. Then the Kd a parameter estimating relative adsorbability, was conducted to study the selectivity towards Sr(II) of the prepared polymer. Under the optimum conditions, the ion-imprinted polymer offered a fast kinetics for the adsorption of Sr(II) and the maximum capacity was 12.9mg/g. The Kd and K parameters estimating relative adsorbability towards target ion, suggested that selective recognition of the ion-imprinted polymer towards Sr(II) was much higher than that of the non-imprinted polymer and attapulgite. Furthermore, the ion-imprinted polymer is of great regeneration capacity. The prepared functional polymer was shown to be promising for selective preseparation and enrichment of trace Sr(II) in environmental samples.

  18. PREPARATION OF SURFACE ION-IMPRINTED ATTAPULGITE-SUPPORTED POLYMER AND ITS ADSORPTION BEHAVIORS OF Sr(Ⅱ)

    Institute of Scientific and Technical Information of China (English)

    PAN Jianming; YAN Yongsheng; LI Chunxiang

    2008-01-01

    The surface ion-imprinting concept and chitosan incorporated sol-gel process were applied to the preparation of a new attapulgite-supported organic-inorganic hybrid polymer for selective separation of Sr(Ⅱ) from aqueous solution.The prepared polymer was characterized with SEM, IR and XRD.The results showed that as a sorbent, it had good configuration and binding sites.Its adsorption behaviors for Sr(Ⅱ) was investigated by FAAS and ICP-AES.The effects on adsorption capacities, including pH, quiescent time, and adsorbent amount were discussed, and the adsorption isothermal curve was obtained.Then the Kd a parameter estimating relative adsorbability, was conducted to study the selectivity towards Sr(Ⅱ) of the prepared polymer.Under the optimum conditions, the ion-imprinted polymer offered a fast kinetics for the adsorption of Sr(Ⅱ) and the maximum capacity was 12.9mg/g.The Kd and K parameters estimating relative adsorbability towards target ion, suggested that selective recognition of the ion-imprinted polymer towards Sr(Ⅱ) was much higher than that of the non-imprinted polymer and attapulgite.Furthermore, the ion-imprinted polymer is of great regeneration capacity.The prepared functional polymer was shown to be promising for selective preseparation and enrichment of trace Sr(Ⅱ) in environmental samples.

  19. Preparation of Micro-Porous Alumina Sheet Support for Ceramic Membrane by Extrusion

    Science.gov (United States)

    Hemra, Khanthima; Atong, Duangduen; Aungkavattana, Pavadee

    Among several types of ceramic membrane developed for a half of century, alumina is the most extensive advantage. In this study, many types of alumina with different particle size distributions were used as a starting material for fabrication of support sheet ceramic membrane using extrusion process. The investigation focused on the alumina dough components composed of some organic binders and water. The organic binder of about 12 wt. % was required in order for dough to be easily extruded, while the amount of water added to the dough depended on the particle size of alumina powder. The particle size and size distribution of starting powder showed strong effects on pore size of sintered alumina support. The pore size decreased when smaller particle size of starting powder was used. In addition, the pore volume of the sintered alumina decreased with increasing the sintering temperature due to improvement in densification, while pore size remained the same. The mechanical strength of alumina supports was also influenced by the particle size of starting powder; the finer particle size resulted in the higher mechanical strength. However, in order to obtain a good flux for the membrane, a high mechanical strength of the support along with its effective porosity is critical concerns. In this work, the support sintered at 1450°C provided a proper porosity of approximately 40% with an acceptable mechanical strength of 30-45MPa.

  20. Research on the Prediction of Soft Soil Foundation Settlement Based on Artificial Bee Colony Support Vector Machines%基于ABC-SVM的软基沉降预测研究

    Institute of Scientific and Technical Information of China (English)

    施俊; 高正夏; 徐嵚嵛

    2016-01-01

    沉降预测一直是地基工程的一个重点研究项目.软土具有天然含水量高、塑性指数大、黏粒含量高等特殊的工程特性,因此,建立在软土上的地基沉降难以预测,对于工程建设有一定的隐患.支持向量机在解决样本数量小、非线性问题上有其特有的优势.利用人工蜂群算法对支持向量机的参数进行优化后建立SVM模型,对木兰溪防洪工程的沉降问题进行预测,将其预测结果与传统的支持向量机模型以及曲线拟合预测方法结果进行对比.最终证明了ABC-SVM模型在软基沉降预测上的可用性.%The prediction of the settlement is always an important research topic in foundation engineering. Soft soil has engineering features of high moisture content,high plastic exponent and high clay content,so it is hard to predict the settlement of soft soil foundation which is dangerous to the engineering construction. The support vector machines are good at dealing with problems that are nonlinear and have little sample size. We use artificial bee colony to optimize the selection of support vector machines'parameters to build SVM model. And the model is used to predict the settlement of flood control project in Mulan stream. The predicting outcomes are used to comparing with the traditional support vector machines and the curve-fitting method's outcomes. It turns out the usability of the ABC-SVM in the prediction of soft soil foundation.

  1. Multilevel Fuzzy Synthesis Evaluation of Foundation Pit Support Scheme Based on Improved Analytic Hierarchy Process%基坑支护方案的改进AHP与多级模糊综合评判

    Institute of Scientific and Technical Information of China (English)

    廖瑛; 王月香; 华志明

    2011-01-01

    在研究与基坑支护方案评价有关的各项指标的基础之上,建立了一套较为完整的基坑支护系统评价指标体系.改进传统的层次分析法使判断矩阵自然满足一致性检验,并计算得到各评价指标的权重;对于定量指标采用隶属函数法确定其隶属度,而对于定性指标,则对其评语进行模糊化处理,从而有效地降低了主观因素对评判结果的影响并得到其模糊评价矩阵.最后按照多级模糊综合评判法对基坑支护系统评价指标体系依次进行一级、二级和三级模糊综合评判,由此获得最优基坑支护方案.%Based on analysis of the related indexes of the evaluation of foundation pit support scheme, a relatively integrated evaluation index system of foundation pit support system was established. By making use of the method of improved Analytic Hierarchy Process which could satisfy consistent verification naturally, the weight of every evaluating factor was calculated. And furthermore, the membership function was used to determine the quantitive index' s membership, and for the qualitative index, their comment was disposed faintly and therefore the fuzzy evaluation matrix was received and at the same time, the influence on the judgement of the subjective factors was depressed effectively. Finally, based on the multilevel fuzzy synthesis evaluation method the first class, the second class and the third class fuzzy synthesis evaluation for the evaluation index system were calculated to get the optimum scheme of the foundation pit support system.

  2. Effects of preparation methods of support on the properties of nickel catalyst for hydrogenation of m-dinitrobenzene

    Institute of Scientific and Technical Information of China (English)

    LIU Yingxin; WEI Zuojun; CHEN Jixiang; ZHANG Jiyan

    2007-01-01

    Using tetraethyl orthosilicate(TEOS) as the precursor of silica,the silica aerogel and xerogel,which were used as supports of nickel-based catalysts for liquid hydrogenation of m-dinitrobenzene to m-phenylenediamine,were prepared by the sol-gel method combined with supercritical drying(SCD)and conventional drying,respectively.Then,a series of nickel-based catalyst samples supported on these supports were prepared by the incipient wetness impregnation method with an aqueous solution of nickel nitrate as well as lanthanum nitrate as impregnation liquids.Based on the characterization results of nitrogen adsorption-desorption (BET),X-ray diffraction(XRD),temperature programmed reduction(TPR),temperature-programmed desorption of hydrogen(H2-TPD),and catalytic activity evaluation,the physico-chemical properties and catalytic performances of the catalysts were investigated.The results show that the nickel crystallites on the binary nickel catalyst using silica aerogel as support are of smaller particle size.However,compared with the sample supported on silica xerogel,the nickel catalyst supported on the silica aerogel exhibits lower activity and selectivity for the hydrogenation of m-dinitrobenzene because it has a lesser amount of active sites and weaker absorption ability to reactants caused by sintering of the nickel crystallites.The addition of promoter La2O3 could increase the activity and selectivity of the catalysts.Among all the nickel-based catalyst samples prepared,the La2O3 promoted ternary nickel-based catalyst supported on silica xerogel exhibits the highest activity and selectivity for the hydrogenation of m-dinitrobenzene to m-phenylenediamine,which could be attributed to its highest active surfacc area and appropriate absorption strength to reactants.Over this promising catalyst,me conversion of m-dinitrobenzene and the yield of m-phenylenediamine could reach 97.0%and 93.1%,respectively,under proper reaction conditions of hydrogen pressure 2.6 MPa

  3. PREPARATION OF NOVEL POLYETHYLENE-graft- POLY(4-VINYLPYRIDINE)-SUPPORTED METALLOCENE CATALYSTS FOR ETHYLENE POLYMERIZATION

    Institute of Scientific and Technical Information of China (English)

    Ning Zhu; Yong Chen; Zi-long Li; Yuan-xia Liu; Yu-cai Ke; Wen-Hua Sun

    2003-01-01

    Polyethylene (PE) grafting 4-vinylpyridine copolymers has been produced as powders of different rushes by the irradiation method. After treatment with methylaluminoxane (MAO), the copolymers were used as supports for Cp2ZrCl2 catalyst. Results of X-ray photoelectron spectroscopy, Fourier transforms infrared spectroscopy, ultraviolet spectroscopy and scanning electron microscope measurements show that the catalytic sites have been linked through MAO on the PE-graft-4-vinylpyridine (PEVP). The percentages of grafting 4-vinylpyridine and supported Cp2ZrCl2 depend on the size of polyethylene powder. The smaller the polyethylene powder, the more percent of 4-vinylpyridine groups and Cp2ZrCl2 exist on the polyethylene chains, and the PEVP-supported catalyst has a relatively high activity for ethylene polymerization.

  4. Raman study of the formation of beta silicomolybdic acid supported on silica, prepared by impregnation method

    Science.gov (United States)

    Phuc, Nguyen Huu Huy; Ohkita, Hironobu; Mizushima, Takanori; Kakuta, Noriyoshi

    2012-12-01

    Beta silicomolibdic acid/silica (β-SMA, a metastable form of silicomolybdic acid - H4SiMo12O40) forms by the impregnation of fumed silica into molybdenum solution obtained by hydrolyzation of MoO2Cl2. β-SMA/silica is found to be stable up to 300 °C after calcination for 1 h due to the existence of an interlayer MoO3 between silica surface and β-SMA. Structures of molybdenum species in the preparation process (including precursor solution) were analyzed by Raman spectroscopy and XRD.

  5. Data in support of preparation and functionalization of a clickable polycarbonate monolith

    Directory of Open Access Journals (Sweden)

    Yuanrong Xin

    2016-06-01

    Full Text Available This data article provides supplementary figures to the research article entitled, “Phase separation approach to a reactive polycarbonate monolith for “click” modifications” (Xin et al., Polymer, 2015, doi:10.1016/j.polymer.2015.04.008. Here, the nitrogen adsorption/desorption isotherms of the prepared porous polycarbonate monolith are shown to classify its inner structure and calculate the specific surface area. The monoliths were modified by using the thiol-ene click chemistry and the olefin metathesis, which was examined by contact angle measurements, FT-IR, solid state 13C NMR spectroscopy as well as thermogravimetric analysis.

  6. Influence of complexing agents on the preparation of bimetallic platinum-ruthenium catalysts supported on O-functionalized graphite cloths

    Energy Technology Data Exchange (ETDEWEB)

    Sieben, J.M., E-mail: jmsieben@uns.edu.a [Instituto de Ingenieria Electroquimica y Corrosion (INIEC), Universidad Nacional del Sur., Av. Alem 1253, (B8000CPB) Bahia Blanca (Argentina); Duarte, M.M.E.; Mayer, C.E. [Instituto de Ingenieria Electroquimica y Corrosion (INIEC), Universidad Nacional del Sur., Av. Alem 1253, (B8000CPB) Bahia Blanca (Argentina)

    2010-02-18

    Electrodeposition of bimetallic Pt-Ru catalysts on O-functionalized graphite cloths from H{sub 2}PtCl{sub 6} and RuCl{sub 3} solutions containing trisodium citrate (Cit) and disodium dihydrogen ethylenediaminetetraacetate (Na{sub 2}H{sub 2}EDTA) was investigated. SEM analysis of the electrode prepared without complexant showed a relatively compact and rough deposit displaying a 'tree cortex' structure, whereas uniform size and globular shape particles regularly distributed over the support surface were obtained using citrate and Na{sub 2}H{sub 2}EDTA as complexants. In addition, XRD diffraction and EDX analysis revealed that the catalysts prepared using the complexants showed smaller size particles and lower Ru content. Electrocatalytic activity measurements indicated that the most active electrode for methanol oxidation was obtained with Na{sub 2}H{sub 2}EDTA as additive.

  7. The Monopod Bucket Foundation

    DEFF Research Database (Denmark)

    Bakmar, Christian LeBlanc; Ahle, Kim; Nielsen, Søren A.

    2009-01-01

    Following the successful installation of a prototype of a monopod bucket foundation, also called a “monopod suction caisson”, at Horns Rev 2 Offshore Wind Farm, Denmark, in 2009, DONG Energy is currently developing a commercialization strategy. The monopod bucket foundation is a promising...... foundation concept for offshore wind turbines and can be installed using suction assisted penetration, combined with other installation methods. This selfinstalling foundation concept, may avoid the use of expensive jack-ups and scour protection, and thus significantly reduces installation costs. However...

  8. Preparation of Zeolitic Imidazolate Framework-8 (ZIF-8) Membrane on Porous Polymeric Support via Contra-Diffusion Method

    KAUST Repository

    Tan, Xiaoyu

    2016-05-18

    In the last decade, many attempts were made to put metal organic frameworks (MOFs) in industrial applications, but most of these efforts weren’t successfully. As one of the few MOFs produced on industrial scale, ZIF-8 has interesting pore size, huge internal surface area and great thermal and chemical stability. Therefore, ZIF-8 might become the first MOF, which will be applied in industrial separation processes. In this thesis, a synthesis study is presented, which leads to a cheap and convenient way to
fabricate defect-free and thin ZIF-8 membranes on porous polymeric supports showing high selectivity and high gas permeance. The ZIF-8 layers were produced via a contra-diffusion method. Several polymeric membranes were employed as support in this study, such as PAN, PEI, PSU, PA and PTSC. We studied the influence of the polymeric support properties for the ZIF-8 membrane preparation and optimized the ZIF-8 preparation conditions. The ZIF-8 membranes were characterized via scanning electron microscopy (SEM) and X-ray diffraction (XRD). For gas permeation test, we chose a Wicke-Kallenbach apparatus to measure membrane’s gas permeance and selectivity. One of the best ZIF-8 membranes exhibited a hydrogen permeance of 3.45 × 10-8 mol m-2 s-1 Pa-1 and
an ideal selectivity of hydrogen over propane of about 500.

  9. Preparation, Characterization and NO-CO Redox Reaction Studies over Palladium and Rhodium Oxides Supported on Manganese Dioxide

    Directory of Open Access Journals (Sweden)

    M.S. Fal Desai

    2015-03-01

    Full Text Available The catalytic activity of PdO/MnO2 and Rh2O3/MnO2 is investigated for NO-CO redox reaction. Supported catalysts are prepared by wet impregnation method. Among the tested catalysts, PdO/MnO2 shows higher activity for this reaction. Active metal dispersion on MnO2 enhances the selectivity for N2 over N2O in this reaction. The XRD substantiate the formation of MnO2 monophasic phase. SEM images show the formation of elongated particles. TEM images indicate nano-size rod-like morphologies. An increase in the catalytic activity is observed on supported Pd and Rh oxides on MnO2. Temperature programed desorption studies with NO and CO are undertaken to investigate the catalytic surface studies. © 2015 BCREC UNDIP. All rights reservedReceived: 22nd November 2014; Revised: 31st December 2014; Accepted: 2nd January 2015How to Cite: Fal Desai, M.S., Kunkalekar, R.K., Salker, A.V. (2015. Preparation, Characterization and NO-CO Redox Reaction Studies over Palladium and Rhodium Oxides Supported on Manganese Dioxide. Bulletin of Chemical Reaction Engineering & Catalysis, 10 (1: 98-103. (doi:10.9767/bcrec.10.1.7802.98-103Permalink/DOI: http://dx.doi.org/10.9767/bcrec.10.1.7802.98-103 

  10. Preparation and application of zirconium sulfate supported on SAPO-34 molecular sieve as solid acid catalyst for esterification

    Energy Technology Data Exchange (ETDEWEB)

    Xu, Dongyan, E-mail: xdy0156@sina.com; Ma, Hong; Cheng, Fei

    2014-05-01

    Graphical abstract: - Highlights: • SAPO-34 supported zirconium sulfate solid acid catalyst was prepared. • Esterification of acetic acid with ethanol can be catalyzed by ZS/SAPO-34. • The hydration of ZS is vital to the acidic property and catalytic performance. • The ZS/SAPO-34 catalyst treated at 200 °C shows good reusability. - Abstract: Zirconium sulfate (ZS) was supported on SAPO-34 molecular sieve by using an incipient wetness impregnation method with zirconium sulfate as the precursor. The as-prepared catalysts were used as solid acid catalyst for esterification reaction of acetic acid with ethanol. The influence of calcination temperature on the acidic property, catalytic activity, and reusability of ZS/SAPO-34 catalysts were mainly investigated. FT-IR, SEM, EDS and TG analysis have been carried out to demonstrate the characteristics of ZS/SAPO-34 catalysts. It was found that the 30 wt%ZS/SAPO-34 catalysts display the property of superacid irrespective of calcination temperature. The ZS/SAPO-34 catalyst treated at 200 °C can enhance the interaction between the supported ZS and SAPO-34 and keep the catalyst remaining substantially active after several reaction cycles. However, further increasing calcination temperature will cause the transfer of ZS from hydrate to anhydrous phase, and thus the decrease of activity.

  11. Preparation and Characterization of Uranium Oxides in Support of the K Basin Sludge Treatment Project

    Energy Technology Data Exchange (ETDEWEB)

    Sinkov, Sergey I.; Delegard, Calvin H.; Schmidt, Andrew J.

    2008-07-08

    Uraninite (UO2) and metaschoepite (UO3·2H2O) are the uranium phases most frequently observed in K Basin sludge. Uraninite arises from the oxidation of uranium metal by anoxic water and metaschoepite arises from oxidation of uraninite by atmospheric or radiolytic oxygen. Studies of the oxidation of uraninite by oxygen to form metaschoepite were performed at 21°C and 50°C. A uranium oxide oxidation state characterization method based on spectrophotometry of the solution formed by dissolving aqueous slurries in phosphoric acid was developed to follow the extent of reaction. This method may be applied to determine uranium oxide oxidation state distribution in K Basin sludge. The uraninite produced by anoxic corrosion of uranium metal has exceedingly fine particle size (6 nm diameter), forms agglomerates, and has the formula UO2.004±0.007; i.e., is practically stoichiometric UO2. The metaschoepite particles are flatter and wider when prepared at 21°C than the particles prepared at 50°C. These particles are much smaller than the metaschoepite observed in prolonged exposure of actual K Basin sludge to warm moist oxidizing conditions. The uraninite produced by anoxic uranium metal corrosion and the metaschoepite produced by reaction of uraninite aqueous slurries with oxygen may be used in engineering and process development testing. A rapid alternative method to determine uranium metal concentrations in sludge also was identified.

  12. Biosyngas Fischer. Tropsch conversion by high Fe loaded supported catalysts prepared with ultrasound and microwave

    Energy Technology Data Exchange (ETDEWEB)

    Pirola, C.; Di Fronzo, A.; Boffito, D.C.; Bianchi, C. [Milano Univ. (Italy). Dipt. di Chimica; Di Michele, A. [Perugia Univ. (Italy). Dipt. di Fisica

    2012-07-01

    Catalysts with iron high loading of 30 wt%, promoted with K (2.0 wt%) and Cu (3.75 wt%), have been synthesized according to three different methods: (1) the traditional impregnation method (TR); (2) Ultrasound (US) assisted TR method; (3) Microwave (MW) assisted TR method. All the samples have been fully characterized by BET, ICP/OES, XRPD, TG-DTA, FT-IR, TPR, SEM and TEM and tested in a laboratory pilot plant for Fischer-Tropsch synthesis working at 220 C and 20 bar. The results of the catalysts characterization indicated that the morphology of the samples strongly depends on the method of preparation. The best FTS results in term of C{sub 2+} yield (41%) has been obtained using MW with a good value of the selectivity towards heavy hydrocarbons, while in term of CO conversion (58%), using US. The samples prepared with non-traditional methods show FTS better results, probably due to a more wide and uniform distribution of Fe in the medium during the synthesis phase. (orig.)

  13. Engineering, Support, and Management Services: Construction Industry Series: Preparation Level: Student Manual and Instructor's Guide.

    Science.gov (United States)

    Texas Education Agency, Austin. Dept. of Occupational Education and Technology.

    The guide is an outline of training experiences designed to lead a student to at least entry-level proficiency in engineering, support, and management service jobs within the construction industry. Teaching units cover construction drafting, architectural drawing, engineering drafting, estimating, expediting and scheduling, surveying, testing and…

  14. Preparation and Application of Carbon-Nanofiber Based Microstructured Materials as Catalyst Supports

    NARCIS (Netherlands)

    Chinthaginjala, J.K.; Seshan, K.; Lefferts, L.

    2007-01-01

    In the application of heterogeneous catalysts in liquid phase reactions, the rate of reaction as well as selectivity is often negatively influenced by mass transfer limitations in the stagnant liquid in the pores of the catalyst support. Internal mass transfer limitations can be reduced by maximizin

  15. Cognitive Foundations for Visual Analytics

    Energy Technology Data Exchange (ETDEWEB)

    Greitzer, Frank L.; Noonan, Christine F.; Franklin, Lyndsey

    2011-02-25

    In this report, we provide an overview of scientific/technical literature on information visualization and VA. Topics discussed include an update and overview of the extensive literature search conducted for this study, the nature and purpose of the field, major research thrusts, and scientific foundations. We review methodologies for evaluating and measuring the impact of VA technologies as well as taxonomies that have been proposed for various purposes to support the VA community. A cognitive science perspective underlies each of these discussions.

  16. Research and Application of the Support Project of the Foundation Bearing Sand in Deep water%高地下水位含流沙基础开挖支护方案的研究和应用

    Institute of Scientific and Technical Information of China (English)

    黄少鹏

    2014-01-01

    This paper described the comprehensive research on the various measures for excavation support of the foun- dation bearing sand in deep water of the foundation drainage trench excavation construction in the municipal engineering of Angola Republic SãoPedro. And the author hoped to provide a useful reference for engineering construction schemes in sim- ilar geological conditions.%文章简述了在安哥拉共和国市政工程SãoPedro排水渠沟槽基础开挖施工中,通过对高地下水位、含流砂基础开挖支护的各种方案措施的综合研究,希望对有类似地质情况工程施工方案的研究和选择提供有益参考。

  17. Single-crystalline C60 nanostructures by sonophysical preparation: tuning hollow nanobowls as catalyst supports for methanol oxidation.

    Science.gov (United States)

    Zhang, Yang; Jiang, Lang; Li, Hui; Fan, Louzhen; Hu, Wenping; Wang, Chunru; Li, Yongfang; Yang, Shihe

    2011-04-18

    Large-scale single-crystalline hollow nanobowls of pure C(60) were prepared by applying a sonophysical strategy in a binary organic solution. Through the simple adjustment of the concentration of the C(60) /m-xylene solution and the volume ratio of m-xylene to acetonitrile, C(60) nanorings, nanoplates, nanorods, and nanowires were also selectively synthesized. The promise of the C(60) hollow structures as Pt catalyst supports is heightened by the significantly enhanced catalytic activity toward methanol oxidation for a given amount of C(60) used, which demonstrates their potential application in fuel cells.

  18. Preparation of Polysulfone-supported Phosphoramidic Acid Type Chelate Membrane and Its Sorption Properties for Ag+

    Institute of Scientific and Technical Information of China (English)

    WANG Bing; CUI Yong-fang; DU Qi-yun; PEI Guang-ling

    2002-01-01

    A blending chelate filter membrane with high chelate capacity for Ag+ has been prepared by blending of phosphoramidic acid resin and polysulfone. The major parameters influencing structure of the chelate filter membranes such as the blending ratio, phosphoramidic acid resin grain size and temperature of casting solution have been studied. The relationship among the chelate amount of Ag+, pH value, Ag+ concentration and phosphoramidic acid resin grain diameter were examined. The chelate filter membrane had a capacity of1438μg/cm2 for Ag+ under appropriate conditions.Sorption isotherm of Ag + could be expressed with the Freundlich sorption model. The dynamic chelate experiments proved that the sorption and desorption of membranes could be realized simultaneously for Ag+.

  19. Supported Pd-Au Membrane Reactor for Hydrogen Production: Membrane Preparation, Characterization and Testing.

    Science.gov (United States)

    Iulianelli, Adolfo; Alavi, Marjan; Bagnato, Giuseppe; Liguori, Simona; Wilcox, Jennifer; Rahimpour, Mohammad Reza; Eslamlouyan, Reza; Anzelmo, Bryce; Basile, Angelo

    2016-05-09

    A supported Pd-Au (Au 7wt%) membrane was produced by electroless plating deposition. Permeation tests were performed with pure gas (H₂, H₂, N₂, CO₂, CH₄) for long time operation. After around 400 h under testing, the composite Pd-Au membrane achieved steady state condition, with an H₂/N₂ ideal selectivity of around 500 at 420 °C and 50 kPa as transmembrane pressure, remaining stable up to 1100 h under operation. Afterwards, the membrane was allocated in a membrane reactor module for methane steam reforming reaction tests. As a preliminary application, at 420 °C, 300 kPa of reaction pressure, space velocity of 4100 h(-1), 40% methane conversion and 35% hydrogen recovery were reached using a commercial Ni/Al₂O₃ catalyst. Unfortunately, a severe coke deposition affected irreversibly the composite membrane, determining the loss of the hydrogen permeation characteristics of the supported Pd-Au membrane.

  20. Synthesis and characterization of alumina-supported vanadium oxide catalysts prepared by the molecular designed dispersion of VO(acac)2 complexes

    NARCIS (Netherlands)

    Weckhuysen, B.M.; Baltes, M.; Voort, P. van der; Ramachandra Rao, R.; Catana, Gabriela; Schoonheydt, R.A.; Vansant, E.F.

    2000-01-01

    Alumina-supported vanadium oxide catalysts have been prepared by the molecular designed dispersion method, using the vanadyl acetylacetonate complex (VO(acac)2). The complex has been adsorbed on the support from solution, followed by thermal conversion into the corresponding supported vanadium oxide

  1. Fundamentals of Melt infiltration for the Preparation of Supported Metal Catalysts.The Case of Co/SiO2 Fischer-Tropsch Synthesis

    NARCIS (Netherlands)

    Eggenhuisen, T.M.; den Breejen, J.P.; Verdoes, D.; de Jongh, P.E.; de Jong, K.P.

    2013-01-01

    We explored melt infiltration of mesoporous silica supports to prepare supported metal catalysts with high loadings and controllable particle sizes. Melting of Co(NO3)2 ·6H2O in the presence of silica supports was studied in situ with differential scanning calorimetry. The melting point depression o

  2. Continuous preparation of carbon-nanotube-supported platinum catalysts in a flow reactor directly heated by electric current

    Directory of Open Access Journals (Sweden)

    Alicja Schlange

    2011-10-01

    Full Text Available In this contribution we present for the first time a continuous process for the production of highly active Pt catalysts supported by carbon nanotubes by use of an electrically heated tubular reactor. The synthesized catalysts show a high degree of dispersion and narrow distributions of cluster sizes. In comparison to catalysts synthesized by the conventional oil-bath method a significantly higher electrocatalytic activity was reached, which can be attributed to the higher metal loading and smaller and more uniformly distributed Pt particles on the carbon support. Our approach introduces a simple, time-saving and cost-efficient method for fuel cell catalyst preparation in a flow reactor which could be used at a large scale.

  3. Moebius Syndrome Foundation

    Science.gov (United States)

    ... to Moebius syndrome Who we are Mission and History Foundation leadership Scientific advisory board Press room Our stories Financial ... to Moebius syndrome » Who we are » Mission and History » Foundation leadership » Scientific advisory board » Press room » Our stories » Financial ...

  4. Foundations for Critical Thinking

    Science.gov (United States)

    Bers, Trudy; Chun, Marc; Daly, William T.; Harrington, Christine; Tobolowsky, Barbara F.

    2015-01-01

    "Foundations for Critical Thinking" explores the landscape of critical-thinking skill development and pedagogy through foundational chapters and institutional case studies involving a range of students in diverse settings. By establishing a link between active learning and improved critical thinking, this resource encourages all higher…

  5. Modelling Foundations and Applications

    DEFF Research Database (Denmark)

    This book constitutes the refereed proceedings of the 8th European Conference on Modelling Foundations and Applications, held in Kgs. Lyngby, Denmark, in July 2012. The 20 revised full foundations track papers and 10 revised full applications track papers presented were carefully reviewed...

  6. 自钻式锚杆在深基坑支护中的应用%Technical Study on Application of Self-drilling Bolts in Deep Foundation Excavation Support

    Institute of Scientific and Technical Information of China (English)

    戚瑞安

    2014-01-01

    桩锚支护是近年来新兴的深基坑支护方式,但常规锚杆在饱和软土地区施工中效果不佳。结合胜利油田中心医院综合病房楼基坑支护工程,提出一种适合特殊地质特点的自钻式锚杆施工技术,研究了其施工工艺、操作要点,探讨了监测方式,该工艺实施效果显著,技术先进可行,在多项工程中获得推广应用。%Pile-anchor support is a rising deep excavation support pattern in recent years, but the conventional pile-anchor does not work well in the areas of saturated soft soil. Illustrated by foundation excavation supports of comprehensive inpatient building of Central Hospital of Shengli Oilfield, this paper puts forward a new construction technique of applying self-drilling bolts in special geologic condition with a study on its technology and operating instructions and a further discussion on testing method. This technique is advance, effective and practical and has been applied and promoted in many projects.

  7. 拉森钢板桩在太化基坑支护工程中的应用探讨%The application discussion of Larsen steel sheet pile in Taihua foundation pit support engineering

    Institute of Scientific and Technical Information of China (English)

    吴文生

    2014-01-01

    以太化新材料园区工程为例,对工程的水文地质条件进行了分析,确立了钢筋混凝土灌注排桩支护+深层搅拌水泥桩作止水帷幕与拉森钢板桩支护两种基坑支护方案,并对两者作了对比研究,指出拉森钢板桩方案可有效节约成本,缩短施工工期,确保施工安全。%Taking the Taihua new materials industrial park project as an example,this paper analyzed the engineering hydrogeology condition, determined two foundation pit support schemes making reinforced concrete bored piles support + deep mixing cement pile as water curtain and Larssen steel sheet pile support,and made comparative research on both,pointed out that Larsen steel sheet pile scheme could effectively save cost,shorten construction period,ensured the construction safety.

  8. Controlled interactions between anhydrous keggin-type heteropolyacids and silica support: Preparation and characterization of well-defined silica-supported polyoxometalate species

    KAUST Repository

    Grinenval, Eva

    2010-11-11

    Anhydrous Keggin-type phosphorus heteropolyacids were deposited on partially dehydroxylated silica by using the surface organometallic chemistry (SOMC) strategy. The resulting solids were characterized by a combination of physicochemical methods including IR, Raman, 1D and 2D 1H, and 31P MAS NMR, electron microscopy experiments and density functional theory (DFT) calculations. It is shown that the main surface species is [ - Si(OH...H+)]2[H+]1[PM 12O403-] where the polyoxometalate is linked to the support by proton interaction with two silanols. Two other minor species (10% each) are formed by coordination of the polyoxometalate to the surface via the interaction between all three protons with three silanol groups or via three covalent bonds formed by dehydroxylation of the above species. Comparison of the reactivity of these solids and of compounds prepared by a classical way shows that the samples prepared by the SOMC approach contain ca. 7 times more acid sites. © 2010 American Chemical Society.

  9. Supported Pd-Au Membrane Reactor for Hydrogen Production: Membrane Preparation, Characterization and Testing

    OpenAIRE

    Adolfo Iulianelli; Marjan Alavi; Giuseppe Bagnato; Simona Liguori; Jennifer Wilcox; Mohammad Reza Rahimpour; Reza Eslamlouyan; Bryce Anzelmo; Angelo Basile

    2016-01-01

    A supported Pd-Au (Au 7wt%) membrane was produced by electroless plating deposition. Permeation tests were performed with pure gas (H2, H2, N2, CO2, CH4) for long time operation. After around 400 h under testing, the composite Pd-Au membrane achieved steady state condition, with an H2/N2 ideal selectivity of around 500 at 420 °C and 50 kPa as transmembrane pressure, remaining stable up to 1100 h under operation. Afterwards, the membrane was allocated in a membrane reactor module for methane s...

  10. Structural characterization of supported nanocrystalline ZnO thin films prepared by dip-coating

    Energy Technology Data Exchange (ETDEWEB)

    Casanova, J.R. [CITEDEF-CINSO-CONICET Centro de Investigaciones en Solidos, Juan B. de La Salle 4397, B1603ALO, Villa Martelli, Buenos Aires (Argentina); Heredia, E.A., E-mail: eheredia@citedef.gob.ar [CITEDEF-CINSO-CONICET Centro de Investigaciones en Solidos, Juan B. de La Salle 4397, B1603ALO, Villa Martelli, Buenos Aires (Argentina); Bojorge, C.D.; Canepa, H.R. [CITEDEF-CINSO-CONICET Centro de Investigaciones en Solidos, Juan B. de La Salle 4397, B1603ALO, Villa Martelli, Buenos Aires (Argentina); Kellermann, G. [Departamento de Fisica, Universidade Federal do Parana, Curitiba, PR (Brazil); Craievich, A.F. [Instituto de Fisica, Universidade de Sao Paulo, Cidade Universitaria, Sao Paulo, SP (Brazil)

    2011-09-15

    Nanocrystalline ZnO thin films prepared by the sol-gel dip-coating technique were characterized by grazing incidence X-ray diffraction (GIXD), atomic force microscopy (AFM), X-ray reflectivity (XR) and grazing incidence small-angle X-ray scattering (GISAXS). The structures of several thin films subjected to (i) isochronous annealing at 350, 450 and 550 deg. C, and (ii) isothermal annealing at 450 deg. C during different time periods, were characterized. The studied thin films are composed of ZnO nanocrystals as revealed by analysing several GIXD patterns, from which their average sizes were determined. Thin film thickness and roughness were determined from quantitative analyses of AFM images and XR patterns. The analysis of XR patterns also yielded the average density of the studied films. Our GISAXS study indicates that the studied ZnO thin films contain nanopores with an ellipsoidal shape, and flattened along the direction normal to the substrate surface. The thin film annealed at the highest temperature, T = 550 deg. C, exhibits higher density and lower thickness and nanoporosity volume fraction, than those annealed at 350 and 450 deg. C. These results indicate that thermal annealing at the highest temperature (550 deg. C) induces a noticeable compaction effect on the structure of the studied thin films.

  11. Silica-gel Supported V Complexes:Preparation, Characterization and Catalytic Oxidative Desulfurization

    Institute of Scientific and Technical Information of China (English)

    黎俊波; 刘习文; 曹灿灿; 郭嘉; 潘志权

    2013-01-01

    In this manuscript, a series of catalyst SGn-[VVO2-PAMAM-MSA] (SG=silica gel, PAMAM=poly-amidoamine, MSA=5-methyl salicylaldehyde, n=0, 1, 2, 3) was prepared and their structures were fully charac-terized by Fourier transform-infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), X-ray photoelec-tron spectroscopy (XPS) and inductive coupled plasma emission spectrometer (ICP) etc. XPS revealed that the metal V and SGn-PAMAM-MSA combined more closely after the formation of Schiff base derivatives. Their cata-lytic activities for oxidation of dibenzothiophene were evaluated using tert-butyl hydroperoxide as oxidant. The results showed that the catalyst SG2.0-[VVO2-PAMAM-MSA] presented good catalytic activity and recycling time. Mean-while, the optimal condition for the catalytic oxidation of SG2.0-[VVO2-PAMAM-MSA] was also investigated, which showed that when the oxidation temperature was 90 °C, time was 60 min, the O/S was 3︰1, and the mass content of catalyst was 1%, the rate of desulfurization could reach 85.2%. Moreover, the catalyst can be recycled several times without significant decline in catalytic activity.

  12. Preparation of diethylene glycol monomethyl ether monolaurate catalyzed by active carbon supported KF/CaO.

    Science.gov (United States)

    Lou, Shengfeng; Jia, Lihua; Guo, Xiangfeng; Wu, Ping; Gao, Lianbing; Wang, Jianjun

    2015-01-01

    Diethylene glycol monomethyl ether monolaurate (DGMEML) was synthesized via the reaction of diethylene glycol monomethyl ether (DGME) with methyl laurate (ML) by a new solid base catalyst of KF/CaO/AC, which was prepared by impregnation method using active carbon as carrier. The catalysts were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), nitrogen physisorption-desorption and Hammett indicator methods; the effect of the mole ratio of KF to CaO, DGME to ML molar ratio, amount of catalyst, reaction time and temperature on the yield of DGMEML were studied; and the relationship between the structure of the catalyst and the yield of DGMEML was investigated. The formed KCaF3 and K2O were acting as the main active components in the catalytic transesterification; the highest yield of 96.3 % was obtained as KF-to-CaO molar ratio of 2.0, DGME to ML molar ratio of 4.0, catalyst amount of 5 wt%, and reaction time of 30 min at 75 °C; and the catalyst displayed good stability in the transesterification.

  13. Supported Pd-Au Membrane Reactor for Hydrogen Production: Membrane Preparation, Characterization and Testing

    Directory of Open Access Journals (Sweden)

    Adolfo Iulianelli

    2016-05-01

    Full Text Available A supported Pd-Au (Au 7wt% membrane was produced by electroless plating deposition. Permeation tests were performed with pure gas (H2, H2, N2, CO2, CH4 for long time operation. After around 400 h under testing, the composite Pd-Au membrane achieved steady state condition, with an H2/N2 ideal selectivity of around 500 at 420 °C and 50 kPa as transmembrane pressure, remaining stable up to 1100 h under operation. Afterwards, the membrane was allocated in a membrane reactor module for methane steam reforming reaction tests. As a preliminary application, at 420 °C, 300 kPa of reaction pressure, space velocity of 4100 h−1, 40% methane conversion and 35% hydrogen recovery were reached using a commercial Ni/Al2O3 catalyst. Unfortunately, a severe coke deposition affected irreversibly the composite membrane, determining the loss of the hydrogen permeation characteristics of the supported Pd-Au membrane.

  14. New catalyst supports prepared by surface modification of graphene- and carbon nanotube structures with nitrogen containing carbon coatings

    Science.gov (United States)

    Oh, Eun-Jin; Hempelmann, Rolf; Nica, Valentin; Radev, Ivan; Natter, Harald

    2017-02-01

    We present a new and facile method for preparation of nitrogen containing carbon coatings (NCC) on the surface of graphene- and carbon nanotubes (CNT), which has an increased electronic conductivity. The modified carbon system can be used as catalyst support for electrocatalytic applications, especially for polymer electrolyte membrane fuel cells (PEMFC). The surface modification is performed by impregnating carbon structures with a nitrogen containing ionic liquid (IL) with a defined C:N ratio, followed by a thermal treatment under ambient conditions. We investigate the influence of the main experimental parameters (IL amount, temperature, substrate morphology) on the formation of the NCC. Additionally, the structure and the chemical composition of the resulting products are analyzed by electron microscopic techniques (SEM, TEM), energy disperse X-ray analysis (EDX), X-ray photoelectron spectroscopy (XPS) and hot extraction analysis. The modified surface has a nitrogen content of 29 wt% which decreases strongly at temperatures above 600 °C. The new catalyst supports are used for the preparation of PEMFC anodes which are characterized by polarization measurements and electrochemical impedance spectroscopy (EIS). Compared to unmodified graphene and CNT samples the electronic conductivity of the modified systems is increased by a factor of 2 and shows improved mass transport properties.

  15. Exploratory study of mental health consultation-liaison nursing in Australia: Part 2. Preparation, support and role satisfaction.

    Science.gov (United States)

    McNamara, Paul; Bryant, Jenni; Forster, John; Sharrock, Julie; Happell, Brenda

    2008-06-01

    Mental health Consultation-Liaison (CL) nursing continues to develop and gain recognition as a subspecialty of mental health nursing. CL roles are particularly important given the significant number of people experiencing mental illness and other mental health problems within the general health-care settings. However, despite the potential value of these roles, the literature provides little information about these roles and about the nurses who work in these roles. This is the second part of a two-part paper describing a survey of CL nurses in Australia. Part 1 describes demographic data and characteristics of the CL role. Part 2 provides an exploration of the following factors: educational preparation, support, and work satisfaction. The findings identified specific educational needs in preparation and ongoing support for the role. However, overall the participants expressed a high level of satisfaction with their work. Given the current recruitment problems in mental health nursing, the promotion of the CL nursing role might enhance a more positive view of this branch of nursing.

  16. Preparation and characterization of fly ash cenospheres supported CuO–BiVO{sub 4} heterojunction composite

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, Jin [State Key Laboratory of Pollution Control and Resource Reuse, and School of the Environment, Nanjing University, Nanjing 210023 (China); School of Biochemical and Environmental Engineering, Nanjing Xiaozhuang University, Nanjing 211171 (China); Cui, Hao; Wang, Bing; Li, Chuang; Zhai, Jianping [State Key Laboratory of Pollution Control and Resource Reuse, and School of the Environment, Nanjing University, Nanjing 210023 (China); Li, Qin, E-mail: qli@nju.edu.cn [State Key Laboratory of Pollution Control and Resource Reuse, and School of the Environment, Nanjing University, Nanjing 210023 (China)

    2014-05-01

    Graphical abstract: - Highlights: • Novel CuO–BiVO{sub 4}/FACs heterojunction composites have been synthesized. • CuO–BiVO{sub 4} are loaded on the surface of lightweight hollow microspheres. • The CuO–BiVO{sub 4}/FACs exhibit enhanced absorption in the visible light region. • The CuO–BiVO{sub 4}/FACs show efficient photocatalytic activities. • The composites are floatable and can be recovered easily. - Abstract: Novel fly ash cenospheres supported CuO–BiVO{sub 4} heterojunction composites (CuO–BiVO{sub 4}/FACs) were prepared by modified metalorganic decomposition and impregnation methods. The as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), X-ray photoelectron spectra (XPS), and UV–vis diffused reflectance spectroscopy (DRS) techniques. The XPS and SEM analyses indicated that Cu was present as CuO dispersed on the surface of BiVO{sub 4}. The DRS spectra revealed that the composites had improved optical adsorption in the visible light region, and the composites exhibited enhanced photocatalytic activity for methylene blue (MB) degradation under visible light irradiation. It was found that the 5 wt% CuO-loaded composite showed the highest photocatalytic activity for MB dye wastewater treatment. FACs, a by-product generated in coal-firing power plants, were used as a low cost support which favored phase separation after the reaction owing to their low density.

  17. Automation of sample preparation for mass cytometry barcoding in support of clinical research: protocol optimization.

    Science.gov (United States)

    Nassar, Ala F; Wisnewski, Adam V; Raddassi, Khadir

    2017-03-01

    Analysis of multiplexed assays is highly important for clinical diagnostics and other analytical applications. Mass cytometry enables multi-dimensional, single-cell analysis of cell type and state. In mass cytometry, the rare earth metals used as reporters on antibodies allow determination of marker expression in individual cells. Barcode-based bioassays for CyTOF are able to encode and decode for different experimental conditions or samples within the same experiment, facilitating progress in producing straightforward and consistent results. Herein, an integrated protocol for automated sample preparation for barcoding used in conjunction with mass cytometry for clinical bioanalysis samples is described; we offer results of our work with barcoding protocol optimization. In addition, we present some points to be considered in order to minimize the variability of quantitative mass cytometry measurements. For example, we discuss the importance of having multiple populations during titration of the antibodies and effect of storage and shipping of labelled samples on the stability of staining for purposes of CyTOF analysis. Data quality is not affected when labelled samples are stored either frozen or at 4 °C and used within 10 days; we observed that cell loss is greater if cells are washed with deionized water prior to shipment or are shipped in lower concentration. Once the labelled samples for CyTOF are suspended in deionized water, the analysis should be performed expeditiously, preferably within the first hour. Damage can be minimized if the cells are resuspended in phosphate-buffered saline (PBS) rather than deionized water while waiting for data acquisition.

  18. Foundations for the Future: The Fundraising Role of Foundation Boards at Public Colleges and Universities

    Science.gov (United States)

    Worth, Michael

    2012-01-01

    In the face of rising costs and a prolonged economic downturn, public colleges and universities are being challenged to increase their sources of private support and philanthropy. Drawing on the findings of a recent AGB survey of public college- and university-affiliated foundation board chairs and chief executive officers, Foundations for the…

  19. Professional Partnerships: Supporting the Preparation of Pre-Service Teachers Through a Tiered Online Mentoring System

    Directory of Open Access Journals (Sweden)

    Barbara Schwartz-Bechet

    2011-08-01

    Full Text Available The University of Maryland University College’s (UMUC Department of Education developed a program to increase achievement of secondary school students and increase retention of Master of Arts in Teaching Program (MAT pre-service teacher candidates entitled, “Professional Partnerships”. “Professional Partnerships” is a tiered system of support that promotes stakeholder success by providing online mentoring to pre-service teacher candidates from master mentor teachers. The master mentor teachers were provided with web conferencing workshops and online mentoring in the use of technology tools, The goals of the program are based upon the Redesign of Teacher Education and a research based framework that strengthens partnerships with local school districts to include: improvement of secondary student achievement, enhancement of instruction provided by teacher candidates and in-class teachers through the use of science, technology, engineering, and math (STEM content as a tool for instruction, improvement, assessment, and communication within the global educational community.

  20. Preparation and antibacterial activity of chitosan-based nanocomposites containing bentonite-supported silver and zinc oxide nanoparticles for water disinfection

    CSIR Research Space (South Africa)

    Motshekga, SC

    2015-07-01

    Full Text Available -assisted synthesis method. The resulting bentonite-supported silver and zinc oxide nanoparticles were dispersed in a chitosan biopolymer to prepare bentonite chitosan nanocomposites. The obtained bentonite chitosan nanocomposites were characterized with BET surface...

  1. Drained Response of Bucket Foundations under Cyclic Lateral Load

    DEFF Research Database (Denmark)

    Foglia, Aligi; Ibsen, Lars Bo

    2013-01-01

    Introduction The monopod bucket foundation is an innovative support structure for offshore wind turbines. It consists of a shallow embedded foundation which penetrates the seabed by means of a suction created within the caisson. The behaviour of bucket foundations against long-term lateral cyclic...

  2. Preparation and Characterization of a Hydrophobic Metal-Organic Framework Membrane Supported on Thin Porous Metal Sheet

    Energy Technology Data Exchange (ETDEWEB)

    Liu, Jian; Canfield, Nathan L.; Liu, Wei

    2016-02-29

    A hydrophobic metal-organic framework (MOF) UiO-66-CH3 is prepared and its solvothermal stability is investigated in comparison to UiO-66. It is confirmed that the MOF stability is enhanced by introduction of the two methyl groups, while the water adsorption is reduced. Given its hydrophobicity and stability, UiO-66-CH3 is proposed as an attractive membrane material for gas separation under moisture conditions. The UiO-66-CH3 membrane is prepared on a 50µm-thin porous Ni support sheet for the first time by use of a secondary growth method. It is found that uniform seed coating on the support is necessary to form a continuous membrane. In addition to growth time and temperature, presence of a modulator in the growth solution is found to be useful for controlling hydrothermal membrane growth on the seeded support. A dense, inter-grown membrane layer is formed by 24-h growth over a temperature range from 120 oC to 160 oC. The membrane surface comprises 500 nm octahedral crystals, which are supposed to grow out of the original 100 nm spherical seeding crystals. The separation characteristics of resulting membranes are tested with pure CO2, air, CO2/air mixture, and humid CO2/air mixture. CO2 permeance as high as 1.9E-06 mol/m2/s/Pa at 31oC is obtained. Unlike the hydrophilic zeolite membranes, CO2 permeation through this membrane is not blocked by the presence of water vapor in the feed gas. The results suggest that this MOF framework is a promising membrane material worth to be further investigated for separation of CO2 and other small molecules from humid gas mixtures.

  3. Preparation and characterization of a green nano-support for the covalent immobilization of glucoamylase from Neurospora sitophila.

    Science.gov (United States)

    Syed, Fatima; Ali, Khurshid; Asad, Muhammad Javaid; Fraz, Muhammad Gul; Khan, Zahid; Imran, Muhammad; Taj, Raheela; Ahmad, Aftab

    2016-09-01

    The preparation of green nano supports for the covalent immobilization of enzymes is of special interest both from the economic and environmental point of view. In this contribution, we report on the synthesis of phytochemicals coated silver nanoparticles, which were used as a novel green support for the covalent immobilization of glucoamylase isolated from Neurospora sitophila. The aqueous extract of Fagonia indica was used as a source of reducing and capping agents for the reduction of silver ions into silver nanoparticles. The prepared nanoparticles were characterized by various analytical techniques. UV-visible spectroscopy was used to detect the characteristic surface plasmon resonance bands (426, 438nm) of the silver nanoparticles. The biosynthesized silver nanoparticles were mostly spherical in shapes with an average particle size of 30-40nm (TEM and DLS measurements). X-ray diffraction and energy dispersive X-ray studies confirmed the face centered cubic crystalline form and elemental composition of the biogenic silver nanoparticles respectively. FTIR study revealed that plant polyphenolics and protein were mainly involved in the reduction and capping of silver ions. Glucoamylase from Neurospora sitophila was covalently immobilized to these nanoparticles via EDC (1-(3-(dimethylamino) propyl) 3-ethylcarbodiimidehydrochloride) coupling reaction. The immobilized enzyme exhibited higher pH and thermal stabilities as compared to the free enzyme. The kinetic constant (KM) value for the immobilized glucoamylase was higher (0.73mg/mL) than its free counterpart (0.44mg/mL), whereas the Vmax value was slightly higher for the immobilized glucoamylase. The findings of this study conclude that the newly developed green method for the synthesis of green nano-support is simple, cost effective and could be successfully used for the immobilization of various enzymes and other macromolecules.

  4. The Role of Foundation Universities in the Higher Education Policy After 1980

    Directory of Open Access Journals (Sweden)

    G. Ozdem

    2011-12-01

    Full Text Available The higher education system which entered a new period with the 1980s has in the last five years entered a phase of numerical enlargement and structural transformation. Having only 19 public universities in the early 1980s, the higher education system today have turned into a broad system with 85 public and 30 foundation universities. The research aims to discuss the role of foundation universities in the higher education policies implemented between the years 1980-2007. Among the five development plans prepared between 1980 and 2008, it was suggested for the first time with the sixth five-year development plan that foundations should be supported to establish private universities and policies was formulated accordingly. Mesut Yılmaz was the prime minister and Süleyman Demirel was the president who opened the highest number of foundation universities between 1980 and 2008. While the number of students between 1986-1987 was 426 in foundation universities, this number in foundation universities reached 109.903 in the 2006-2007 aca-demic year. The annual growth rate of the number of students in foundation universities within the twenty-year period is 32%. In the 2006-2007 academic year, the number of academic staff in foundation universities is 7766, of academic fellows is 2502, and of students is 109,903. The number of students per academic staff in foundation universities in the 2006-2007 academic year is 21, whereas the number of students per academic fellow is 44.

  5. The Application of Foundation Pit Monitoring Technology to the Excavation

    Directory of Open Access Journals (Sweden)

    Qiu Jin

    2015-01-01

    Full Text Available The foundation pit monitoring plays an important role in the foundation pit supporting projects especially in those deep foundation pit projects. Through the whole monitoring of the foundation pit construction from the excavation to the backfill, we can learn about the forcing and deforming process of the foundation pit supporting system, and grasp the impact of external condition changes on the foundation pit. This paper takes a project in Jinan as an example to establish a specific monitoring program, and then conducts the analysis and evaluation of the monitoring data; the real-time grasp of the foundation pit deformation and internal force changes can help to further ensure the security status of the foundation pit, thus better guiding the construction.

  6. 韩国某深基坑支护工程可拆式锚索类型选择研究%Type Selection Research of Removable Anchor Cable for Deep Foundation Excavation Support Project in Korean

    Institute of Scientific and Technical Information of China (English)

    赵业保; 叶军; 薛永彬

    2016-01-01

    The deep foundation excavation project found in Haeundae LCT project has some characteristics including deep excavation, large amounts of excavation, narrow construction site, high underground water level, tough environmental rules and the shape of land where cutting surface is widely distributed. For the security and safety of deep foundation excavation, diaphragm wall and removable anchor cable were adopted as the support system. This paper compared two types of anchor cables from the test construction, economic analysis, on⁃site construction status and other perspectives, introduced the key point of the anchor cable selection and confirmed the anchor cable used for construction, which accumulated the experience for rational selection of anchor cable.%韩国海云台LCT综合体项目深基坑支护工程,具有基坑开挖深、开挖体量大、断面分散、场地狭小、地下水位高和环境保护严格的特点,为保证深基坑支护的整体安全性与可靠性,工程采用地下连续墙与可拆除式锚索作为主要的支护体系。从试验施工、经济性分析、现场施工状况等角度对2类锚索进行了分析比较,阐述了锚索选型的要点,明确了本工程施工用锚索的类别,为锚索的合理选型积累了经验。

  7. Study of Supported Nickel Catalysts Prepared by Aqueous Hydrazine Method. Hydrogenating Properties and Hydrogen Storage: Support Effect. Silver Additive Effect; Catalyseurs de nickel supportes prepares par la methode de l'hydrazine aqueuse. Proprietes hydrogenantes et stockage d'hydrogene. Effet du support. Effet de l'ajout d'argent

    Energy Technology Data Exchange (ETDEWEB)

    Wojcieszak, R

    2006-06-15

    We have studied Ni or NiAg nano-particles obtained by the reduction of nickel salts (acetate or nitrate) by hydrazine and deposited by simple or EDTA-double impregnation on various supports ({gamma}-Al{sub 2}O{sub 3}, amorphous or crystallized SiO{sub 2}, Nb{sub 2}O{sub 5}, CeO{sub 2} and carbon). Prepared catalysts were characterized by different methods (XRD, XPS, low temperature adsorption and desorption of N{sub 2}, FTIR and FTIR-Pyridine, TEM, STEM, EDS, H{sub 2}-TPR, H{sub 2}-adsorption, H{sub 2}-TPD, isopropanol decomposition) and tested in the gas phase hydrogenation of benzene or as carbon materials in the hydrogen storage at room temperature and high pressure. The catalysts prepared exhibited better dispersion and activity than classical catalysts. TOF's of NiAg/SiO{sub 2} or Ni/carbon catalysts were similar to Pt catalysts in benzene hydrogenation. Differences in support acidity or preparation method and presence of Ag as metal additive play a crucial role in the chemical reduction of Ni by hydrazine and in the final properties of the materials. Ni/carbon catalysts could store significant amounts of hydrogen at room temperature and high pressure (0.53%/30 bars), probably through the hydrogen spillover effect. (author)

  8. Preparation and characterization of Pt supported on graphene with enhanced electrocatalytic activity in fuel cell

    Science.gov (United States)

    Xin, Yuchen; Liu, Jian-guo; Zhou, Yong; Liu, Wenming; Gao, Jian; Xie, Yun; Yin, Ying; Zou, Zhigang

    Pt nanoparticles are deposited onto graphene sheets via synchronous reduction of H 2PtCl 6 and graphene oxide (GO) suspension using NaBH 4. Lyophilization is introduced to avoid irreversible aggregation of graphene (G) sheets, which happens during conventional drying process. Pt/G catalysts reveal a high catalytic activity for both methanol oxidation and oxygen reduction reaction compared to Pt supported on carbon black (Pt/C). The performance of Pt/G catalysts is further improved after heat treatment in N 2 atmosphere at 300 °C for 2 h, and the peak current density of methanol oxidation for Pt/G after heat treatment is almost 3.5 times higher than Pt/C. Transmission electron microscope (TEM) images show that the Pt particles are uniformly distributed on graphene sheets. X-ray photoelectron spectroscopy (XPS) results demonstrate that the interaction between Pt and graphene is enhanced during annealing. It suggests that graphene has provided a new way to improve electrocatalytic activity of catalyst for fuel cell.

  9. Structure of alumina supported vanadia catalysts for oxidative dehydrogenation of propane prepared by flame spray pyrolysis

    DEFF Research Database (Denmark)

    Høj, Martin; Jensen, Anker Degn; Grunwaldt, Jan-Dierk

    2013-01-01

    .%. The catalysts were subsequently characterized by BET surface area, X-ray diffraction (XRD), Raman, UV–vis diffuse reflectance and X-ray absorption spectroscopy (XAS) as well as measurement of the catalytic performance. The catalysts had specific surface areas from 143 to 169 m2/g corresponding to average.......1 VOx/nm2), a mixture of vanadia oligomers and monomers at 5wt.% V (3.6 VOx/nm2) and mainly oligomers at 7.5 and 10wt.% V (6.0 and 8.4 VOx/nm2). Diffuse reflectance UV–vis and extended X-ray absorption fine structure (EXAFS) spectroscopy measurements supported the results of Raman spectroscopy. In situ...... particles diameters from 9.0 to 10.9nm and apparent vanadia surface densities from 1.4 to 8.4 VOx/nm2. The only crystalline phase detected by XRD was γ-Al2O3, except at 10wt.% vanadium where traces of crystalline vanadia were observed. Raman spectroscopy showed vanadia monomers at 2 and 3wt.% V (1.4 and 2...

  10. Overview of ESA life support activities in preparation of future exploration

    Science.gov (United States)

    Lasseur, Christophe; Paille, Christel

    2016-07-01

    Since 1987, the European Space Agency has been active in the field of Life Support development. When compare to its international colleagues, it is clear that ESA started activities in the field with a "delay of around 25 years. Due to this situation and to avoid duplication, ESA decided to focus more on long term manned missions and to consider more intensively regenerative technologies as well as the associated risks management ( e.g. physical, chemical and contaminants). Fortunately or not, during the same period, no clear plan of exploration and consequently not specific requirements materialized. This force ESA to keep a broader and generic approach of all technologies. Today with this important catalogue of technologies and know-how, ESA is contemplating the different scenario of manned exploration beyond LEO. In this presentation we review the key scenario of future exploration, and identify the key technologies who loo the more relevant. An more detailed status is presented on the key technologies and their development plan for the future.

  11. Orthopaedic research and education foundation and industry.

    Science.gov (United States)

    Wurth, Gene R; Sherr, Judy H; Coffman, Thomas M

    2003-07-01

    Members of orthopaedic industry commit a significant amount of funds each year to support research and education programs that are directly related to their product(s). In addition, industry supports organizations such as the Orthopaedic Research and Education Foundation. The relationship between the Orthopaedic Research and Education Foundation and industry began in the early 1980s. The support to the Orthopaedic Research and Education Foundation from industry primarily has come in the form of unrestricted grants. These grants best can be looked at as an investment rather than a contribution. This form of giving, once called corporate philanthropy is more accurately referred to as strategic philanthropy. Members of industry make these investments to enhance their reputations, build brand awareness, market their products and services, improve employee morale, increase customer loyalty, and establish strategic alliances. The specialty of orthopaedics is among the leaders in medicine in the amount of funding raised within the specialty for research and education programs. This is because of the amount of support from members of industry and the surgeons. During the past 15 years, 40% of the annual support to the Orthopaedic Research and Education Foundation has come from industry and the balance has come from surgeons and members of lay public. Future industry support of the Orthopaedic Research and Education Foundation and other organizations within the specialty of orthopaedics will be dependent on the continued demonstration of tangible returns in areas described.

  12. Preparation of porous α-Fe2O3-supported Pt and its sensing performance to volatile organic compounds

    Institute of Scientific and Technical Information of China (English)

    Yuhong Cheng; Yanfei Kang; Liwei Wang; Yao Wang; Shurong Wang; Yujin Li; Wei Zhong; Liangqun Peng

    2012-01-01

    Porous α-Fe2O3 was synthesized by a simple hydrothermal treatment of FeCl3 aqueous solution followed by a calcination process.In the synthesis of porous α-Fe2O3,no templates or pore-directing agents were used.The as-prepared porous α-Fe2O3 was further employed as a support for loading Pt nanoparticles.The gas sensing performance of the obtained porous α-Fe2O3-supported Pt to VOCs was investigated.The sensor presented a high response and fast response-recovery characteristic to several VOCs including acetone,ether,methanol,ethanol,butanol and hexanol.Meanwhile,it exhibited a much higher response than the pure α-Fe2O3 at the operating temperature of 260℃.The enhanced sensing properties may be related to the unique porous structure of the α-Fe2O3 support and the promoting effect of active Pt nanoparticles for the sensing reactions.

  13. Hepatitis B Foundation

    Science.gov (United States)

    ... worldwide 2 Billion People have been infected with Hepatitis B Worldwide The Hepatitis B Foundation is working on ... of people living with hepatitis B. Learn About Hepatitis B in 11 Other Languages . Resource Video See More ...

  14. Prostate Cancer Foundation

    Science.gov (United States)

    ... P 2 rovocative Questions PCCTC Scientific Retreat Coffey-Holden Research News Faces of Prostate Cancer [4] Survivors ... Foundation News The Prostate Cancer Foundation’s 2016 Coffey-Holden Prostate Cancer Academy Meeting accelerates advances in the ...

  15. Patient Advocate Foundation

    Science.gov (United States)

    ... Resources CoPay Resources Healthcare Reform Prevention View Resource Click here to submit a resource Subscribe Copyright © 2012 Patient Advocate Foundation Headquarters: 421 Butler Farm Road, Hampton, VA 23666 Phone: (800) 532-5274 - ...

  16. Lupus Foundation of America

    Science.gov (United States)

    ... and Testing New Treatments Learn More About the Lupus Foundation of America We are devoted to solving ... Spam Control Text: Please leave this field empty Lupus FAQ What is lupus? What are the common ...

  17. The foundations of statistics

    CERN Document Server

    Savage, Leonard J

    1972-01-01

    Classic analysis of the foundations of statistics and development of personal probability, one of the greatest controversies in modern statistical thought. Revised edition. Calculus, probability, statistics, and Boolean algebra are recommended.

  18. Stuttering Foundation of America

    Science.gov (United States)

    ... is from their doctor. Read More Powerful New Film Reveals Emotional Impact of Stuttering The life impact ... President Introduces Award-Winning Author at St. Simons School Stuttering Foundation President Jane Fraser had the honor ...

  19. National Psoriasis Foundation

    Science.gov (United States)

    ... is treated in their countries. Previous Next National Psoriasis Foundation provides you with the help you need to best manage your psoriasis or psoriatic arthritis, while promoting research to find ...

  20. American Lyme Disease Foundation

    Science.gov (United States)

    ... Infectious Diseases, 35: 451-464, 2002) What is Lyme Disease? Lyme disease (LD) is an infection caused by ... mission with your own tax-deductible contribution. American Lyme Disease Foundation, Inc. PO Box 466 Lyme, CT 06371 ...

  1. Foundations of laser spectroscopy

    CERN Document Server

    Stenholm, Stig

    2005-01-01

    A simple presentation of the theoretical foundations of steady-state laser spectroscopy, this text helps students to apply theory to calculations with a systematic series of examples and exercises. 1984 edition.

  2. Sjogren's Syndrome Foundation

    Science.gov (United States)

    ... and receive discounts on Sjögren's resources. Follow Us Online! Join the SSF on Twitter, YouTube, Facebook, and Linkedin! anxiety © 2016 Sjögren’s Syndrome Foundation, Inc. 6707 Democracy Blvd, Ste 325, Bethesda, ...

  3. Mesothelioma Applied Research Foundation

    Science.gov (United States)

    ... Percentage Donations Tribute Wall Other Giving/Fundraising Opportunities Bitcoin Donation Form FAQs Mesothelioma Awareness Day: Find out ... Percentage Donations Tribute Wall Other Giving/Fundraising Opportunities Bitcoin Donation Form FAQs © 2017 Mesothelioma Applied Research Foundation, ...

  4. CCEA GCSE mathematics foundation

    CERN Document Server

    Hamilton, Neill

    2017-01-01

    Build all the necessary skills to progress your students' learning and develop their problem-solving skills with this fully updated edition of the market-leading Student's Book for CCEA GCSE Mathematics. - Supports you and your students through the new specifications with content mapped to the new module options with material for each module (M1/M5, M2/M6 F or M3/M7 and M4/M8 H) clearly indicated throughout. - Prepares students for assessment with plenty of practice questions divided into calculator and non-calculator, plus links to further relevant and appropriate exam questions.- Develops understanding with Learning Objectives and required knowledge set out at the start of each chapter.- Tests understanding with end of chapter exercises and problem-solving questions throughout. - Enhances learning with detailed worked examples and solutions.

  5. Foundations of measurement

    CERN Document Server

    Suppes, Patrick

    1989-01-01

    Foundations of Measurement offers the most coherently organized treatment of the topics and issues central to measurement. Much of the research involved has been scattered over several decades and a multitude of journals--available in many instances only to specialties. With the publication of Volumes two and three of this important work, Foundations of Measurement is the most comprehensive presentation in the area of measurement.

  6. Foundations of Information Theory

    OpenAIRE

    Burgin, Mark

    2008-01-01

    Information is the basic concept of information theory. However, there is no definition of this concept that can encompass all uses of the term information in information theories and beyond. Many question a possibility of such a definition. However, foundations of information theory developed in the context of the general theory of information made it possible to build such a relevant and at the same time, encompassing definition. Foundations of information theory are built in a form of onto...

  7. Foundational aspects of security

    DEFF Research Database (Denmark)

    Chatzikokolakis, Konstantinos; Mödersheim, Sebastian Alexander; Palamidessi, Catuscia

    2014-01-01

    This Special Issue of the Journal of Computer Security focuses on foundational aspects of security, which in recent years have helped change much of the way we think about and approach system security.......This Special Issue of the Journal of Computer Security focuses on foundational aspects of security, which in recent years have helped change much of the way we think about and approach system security....

  8. Foundations of microprogramming architecture, software and applications

    CERN Document Server

    Agrawala, Ashok K

    1976-01-01

    Foundations of Microprogramming: Architecture, Software, and Applications discusses the foundations and trends in microprogramming, focusing on the architectural, software, and application aspects of microprogramming. The book reviews microprocessors, microprogramming concepts, and characteristics, as well as the architectural features in microprogrammed computers. The text explains support software and the different hierarchies or levels of languages. These include assembler languages which are mnemonic or symbolic representation of machine commands; the procedure oriented machine-dependent;

  9. Birth of the Canadian Digestive Health Foundation.

    Science.gov (United States)

    Beck, Ivan T

    2004-01-01

    The Canadian Digestive Disease Foundation, renamed the Canadian Digestive Health Foundation--Fondation canadienne pour la promotion de la santé digestive--in December 2001, is the culmination of ongoing efforts by the Canadian Association of Gastroenterology to establish an independent charitable organization. In February 2001, it was officially endorsed as the Foundation for the Canadian Association of Gastroenterology. The initial efforts to establish this Foundation, led by Dr Richard McKenna in 1963, were unsuccessful. In 1991, Glaxo Canada (now GlaxoSmithKline) became a founding donor, and with the four founding physicians--Drs Ivan T Beck, Richard H Hunt, Suzanne E Lemire and Alan BR Thomson--the expenses to establish the Foundation were met. A charitable number was obtained in 1995 (0997427-11). The second founding donor was Janssen Canada (now Janssen-Ortho), and public education support came from Astra Canada (now AstraZeneca Canada). The Foundation initially relied on corporate donors, but now approaches physicians, patients and the general public. The objectives of the Foundation are to advance the science of gastroenterology and to provide knowledge of digestive diseases and nutrition to the general public, to enhance the quality of life of persons who are afflicted with these disorders. The major achievements of the Foundation are the provision of one-year operating grants to new investigators, which have allowed them to accumulate early data and subsequently obtain support from other major granting organizations. It also provides Fellowships and studentship support grants, in conjunction with the Canadian Institutes of Health Research and the pharmaceutical industry. The education committee found that there was little research support in this field, considering the large economic burden of digestive disease and the amount of outstanding work done by Canadian researchers. A bilingual Web site, a web-based specialist's discussion program and bilingual

  10. Swiss Foundation Code 2009 principles and recommendations for the establishment and management of grant-making foundations

    CERN Document Server

    Sprecher, Thomas; Janssen, Martin

    2011-01-01

    The «Swiss Foundation Code 2009» takes up and completes the first European Good Governance Code for grant-making foundations, published in 2005. It contains practical governance guidelines regarding the establishment, organization, management and monitoring of grant-making foundations as well as making due reference to support activities, financial and investment policies. The abridged English version of the „Swiss Foundation Code 2009“ contains 3 principles and 26 recommendations – but not the extensive commentary parts.

  11. Preparation of a novel pH optical sensor using orange (II) based on agarose membrane as support.

    Science.gov (United States)

    Heydari, Rouhollah; Hosseini, Mohammad; Amraei, Ahmadreza; Mohammadzadeh, Ali

    2016-04-01

    A novel and cost effective optical pH sensor was prepared using covalent immobilization of orange (II) indicator on the agarose membrane as solid support. The fabricated optical sensor was fixed into a sample holder of a spectrophotometer instrument for pH monitoring. Variables affecting sensor performance including pH of dye bonding to agarose membrane and dye concentration were optimized. The sensor responds to the pH changes in the range of 3.0-10.0 with a response time of 2.0 min and appropriate reproducibility (RSD ≤ 0.9%). No significant variation was observed on sensor response after increasing the ionic strength in the range of 0.0-0.5M of sodium chloride. Determination of pH using the proposed optical sensor is quick, simple, inexpensive, selective and sensitive in the pH range of 3.0-10.0.

  12. Methanol oxidation on carbon supported Pt-Ru catalysts prepared by electrodeposition - Evaluation of Nafion {sup registered} 117 film effect

    Energy Technology Data Exchange (ETDEWEB)

    Sieben, J.M. [Instituto de Ingenieria Electroquimica y Corrosion (INIEC), Universidad Nacional del Sur, Av. Alem 1253 (B8000CPB) Bahia Blanca, Buenos Aires (Argentina); Duarte, M.M.E.; Mayer, C.E. [Instituto de Ingenieria Electroquimica y Corrosion (INIEC), Universidad Nacional del Sur, Av. Alem 1253 (B8000CPB) Bahia Blanca, Buenos Aires (Argentina); Comision de Investigaciones Cientificas de la Provincia de Buenos Aires (CIC) (Argentina)

    2010-03-15

    Diverse electrochemical techniques were performed in order to obtain meaningful information about the methanol oxidation reaction on nanostructured planar carbon supported Pt-Ru electrodes prepared by electrodeposition, on which a layer of Nafion ionomer was incorporated. A metallic deposit consisting of dendritic agglomerates (between 50 and 200 nm) constituted by smaller particles (6 nm) was obtained. The average bulk Ru content obtained by EDX analysis was between 23 and 25 at. %. A decrease of the activity in the electrodes for methanol oxidation was determined when the thickness of the Nafion 117 film was increased. These results may be associated with the partial blocking of the surface active sites by hydrophobic domains of the polymer, and the presence of CO{sub 2} molecules retained within the Nafion hydrophilic microchannels. EIS results indicated that methanol electro-oxidation mechanism does not change with Nafion presence. (author)

  13. Scientific support for preparing an EU position for the 45th Session of the Codex Committee on Pesticide Residues (CCPR

    Directory of Open Access Journals (Sweden)

    European Food Safety Authority

    2013-07-01

    Full Text Available In accordance with Article 43 of Regulation (EC No 396/2005, EFSA received a request from the European Commission to provide support for the preparation of the EU position for the 45th session of the Codex Committee on Pesticide Residues (CCPR. In 2012, JMPR evaluated 12 active substances regarding the setting of toxicological reference values to be used in consumer risk assessment, 7 new compounds (ametoctradin, chlorfenapyr, dinotefuran, fluxapyroxad, MCPA, picoxystrobin, sedaxane and 4 part of periodic reevaluation (benzoate, fenpropathrin, fenvalerate, glufosinate-ammonium. Regarding the setting of Maximum Residue Limits (CXLs, JMPR assessed 26 substances (ametoctradin, azoxystrobin, buprofezin, carbofuran, chlorfenapyr, chlorothalonil, cycloxydim, cyfluthrin, cyromazine, dichlorvos, dicofol, dinotefuran, fenvalerate, fludioxonil, fluopyram, fluxapyroxad, glufosinate-ammonium, imidacloprid, MCPA, methoxyfenozide, penthiopyrad, phorate, picoxystrobin, sedaxane, spinetoram and trifloxystrobin. EFSA derived comments on the JMPR evaluations regarding the acceptability of the proposed draft Codex MRLs and the toxicological reference values.

  14. Preparation of polymer-supported hydrated ferric oxide based on Donnan membrane effect and its application for arsenic removal

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    In the present study a novel technique was proposed to prepare a polymer-supported hydrated ferric oxide (D201-HFO) based on Donnan membrane effect by using a strongly basic anion exchanger D201 as the host material and FeCl3-HCl-NaCl solution as the reaction environment. D201-HFO was found to exhibit higher capacity for arsenic removal than a commercial sorbent Purolite ArsenX. Furthermore, it presents favorable adsorption selectivity for arsenic removal from aqueous solution, as well as satis- factory kinetics. Fixed-bed column experiments showed that arsenic sorption on D201-HFO could re- sult in concentration of this toxic metalloid element below 10 μg/L, which was the new maximum con- centration limit set recently by the European Commission and imposed by the US EPA and China. Also, the spent D201-HFO is amenable to efficient regeneration by NaOH-NaCl solution.

  15. Scientific support for preparing an EU position in the 46th Session of the Codex Committee on Pesticide Residues (CCPR

    Directory of Open Access Journals (Sweden)

    European Food Safety Authority

    2014-07-01

    Full Text Available In accordance with Article 43 of Regulation (EC No 396/2005, EFSA received a request from the European Commission to provide support for the preparation of the EU position for 46th session of the Codex Committee on Pesticide Residues (CCPR. In 2013, JMPR evaluated 10 active substances regarding the setting of toxicological reference values to be used in consumer risk assessment (diquat, chlorfenapyr, picoxystrobin, benzovindiflupyr, bixafen, fenamidone, fluesulfone, isoxaflutole, tolfenpyrad, and trinexapac and 31 active substances regarding the setting of Maximum Residue Limits (MRLs (diquat, malathion, chlorpyrifos methyl, triazophos, glyphosate, propiconazole, bentazone, dithianon, fenpyroximate, fenbuconazole, flutriafol, cyprodinil, fludioxonil, indoxocarb, difenoconazole, pyrimethanil, azoxystrobin, chlorantraniliprole, mandipropamid, spirotetramate, cyproconazole, dicamba, sulfoxaflor, penthiopyrad, cyantraniliprole, imazapic, imazapyr, isoxaflutole, tolfenpyrad and trinexapac.

  16. Preparation and adsorption behavior of berberine hydrochloride imprinted polymers by using silica gel as sacrificed support material

    Science.gov (United States)

    Li, Hui; Li, Yuzhuo; Li, Zhiping; Peng, Xiyang; Li, Yanan; Li, Gui; Tan, Xianzhou; Chen, Gongxi

    2012-03-01

    Preparation of berberine hydrochloride (B-Cl) imprinted polymers (MIPs) based on surface imprinting technique with silica gel as sacrificial support material was performed successfully by using B-Cl as template, methacrylic acid (MAA) and ethylene glycol dimethacrylate (EGDMA) as functional monomer and cross-linker, respectively. The prepared polymers were characterized by Fourier transmission infrared spectrometry (FTIR) and scanning electron microscopy (SEM). Adsorption behavior of the MIPs for the template and its structural analogues was investigated. Sites distribution on the surface of MIPs was explored by using different isotherm adsorption models and thermodynamic parameters for the adsorption of B-Cl on the MIPs determined. Sample application and reusability for the MIPs was also evaluated. Results indicated the strong adsorption and high selectivity of the MIPs for B-Cl. Saturated adsorption capacity reached 27.2 μmol g-1 and the selectivity coefficient of the MIPs for B-Cl relative to jatrorrhizine hydrochloride (J-Cl) and palmatine palmatus hydrochloride (P-Cl) are 3.70 and 6.03, respectively. In addition, the MIPs were shown with good reusability and selectively retention ability in sample application.

  17. Preparation and adsorption behavior of berberine hydrochloride imprinted polymers by using silica gel as sacrificed support material

    Energy Technology Data Exchange (ETDEWEB)

    Li Hui, E-mail: lihuijsdx@163.com [Key Laboratory of Plant Resource Conservation and Utilization, Jishou University, Hunan Jishou, 416000 (China); Li Yuzhuo [Key Laboratory of Plant Resource Conservation and Utilization, Jishou University, Hunan Jishou, 416000 (China); Li Zhiping [College of Chemistry and Chemical Engineering, Jishou University, Hunan Jishou, 416000 (China); Peng Xiyang; Li Yanan; Li Gui; Tan Xianzhou; Chen Gongxi [Key Laboratory of Plant Resource Conservation and Utilization, Jishou University, Hunan Jishou, 416000 (China)

    2012-03-01

    Preparation of berberine hydrochloride (B-Cl) imprinted polymers (MIPs) based on surface imprinting technique with silica gel as sacrificial support material was performed successfully by using B-Cl as template, methacrylic acid (MAA) and ethylene glycol dimethacrylate (EGDMA) as functional monomer and cross-linker, respectively. The prepared polymers were characterized by Fourier transmission infrared spectrometry (FTIR) and scanning electron microscopy (SEM). Adsorption behavior of the MIPs for the template and its structural analogues was investigated. Sites distribution on the surface of MIPs was explored by using different isotherm adsorption models and thermodynamic parameters for the adsorption of B-Cl on the MIPs determined. Sample application and reusability for the MIPs was also evaluated. Results indicated the strong adsorption and high selectivity of the MIPs for B-Cl. Saturated adsorption capacity reached 27.2 {mu}mol g{sup -1} and the selectivity coefficient of the MIPs for B-Cl relative to jatrorrhizine hydrochloride (J-Cl) and palmatine palmatus hydrochloride (P-Cl) are 3.70 and 6.03, respectively. In addition, the MIPs were shown with good reusability and selectively retention ability in sample application.

  18. Preparation of Ru Nanocatalysts Supported on SBA-15 and Their Excellent Catalytic Activity Towards Decolorization of Various Dyes.

    Science.gov (United States)

    Ghosh, Barun; Hazra, Subhenjit; Naik, Bhanudas; Ghosh, Narendra Nath

    2015-09-01

    In this paper, we report a simple aqueous solution based chemical method for preparation Ru nanocatalysts supported on mesoporous silica SBA-15 (Ru@SBA-15) catalysts. Synthesized catalysts were characterized by powder X-ray diffraction (XRD), Optical emission spectroscopy (ICP-OES), Fourier transform infrared spectroscopy (FTIR), high resolution transmission electron microscope (HRTEM) and N2 adsorption-desorption surface area and pore size analyzer, and particle size analyzer. Catalytic activity of the synthesized catalysts towards decolorization of various dyes, such as 4-nitrophenol, Methyl Orange, Congo Red, Rhodamine B, Methylene Blue and mixture of dyes was investigated in presence of excess NaBH4. Catalysis reactions were monitored by employing UV-vis spectroscopy. Catalysis reactions followed pseudo-first order rate equation. The catalyst with 2.5 wt% Ru nanoparticle exhibited excellent catalytic activity and convenient recycling. The high catalytic activity and simple preparation methodology make 2.5Ru@SBA-15 an attractive catalyst for decolorization of organic dyes.

  19. Mixed Oxide Supported MoO3 Catalyst: Preparation, Characterization and Activities in Nitration of o-xylene

    Directory of Open Access Journals (Sweden)

    S.M. Kemdeo

    2010-10-01

    Full Text Available TiO2-ZrO2 mixed oxide support was prepared and impregnated with 12 wt % MoO3 and calcined at various temperatures. The resultant catalyst systems were characterized by XRD, FT-IR, BET, SEM, NH3-TPD and pyridine adsorbed FT-IR methods to know the physico-chemical changes occurred in course of thermal treatment. Activities of these catalysts were tested by employing them in the nitration of o-xylene. Mostly, 500 oC calcined catalyst sample was found to be most active for nitration reaction. Catalyst calcined at higher temperatures showed the negative influence on o-xylene conversion and 4-nitro-o-xylene selectivity. Conversion can be correlated with the presence of strong Brönsted acid sites over the catalyst surface whereas change in selectivity was found attributed to the pore diameter of the catalyst. These catalysts also performed satisfactorily, when used for nitration of other aromatics. No use of corrosive sulfuric acid and efficient reusability of the catalyst make the process environmentally friendly and economic. ©2010 BCREC UNDIP. All rights reserved(Received: 9th February 2010, Revised: 5th March 2010; Accepted: 18th March 2010[How to Cite: S.M. Kemdeo, V.S. Sapkal, G.N. Chaudhari. (2010. Mixed Oxide Supported MoO3 Catalyst: Preparation, Characterization and Activities in Nitration of o-xylene. Bulletin of Chemical Reaction Engineering and Catalysis, 5(1: 39-49. doi:10.9767/bcrec.5.1.776.39-49][How to Link / DOI: http://dx.doi.org/10.9767/bcrec.5.1.776.39-49 ]Cited by in: Taylor Francis |

  20. Mixed Oxide Supported MoO3 Catalyst: Preparation, Characterization and Activities in Nitration of o-xylene

    Directory of Open Access Journals (Sweden)

    S.M. Kemdeo

    2010-10-01

    Full Text Available TiO2-ZrO2 mixed oxide support was prepared and impregnated with 12 wt % MoO3 and calcined at various temperatures. The resultant catalyst systems were characterized by XRD, FT-IR, BET, SEM, NH3-TPD and pyridine adsorbed FT-IR methods to know the physico-chemical changes occurred in course of thermal treatment. Activities of these catalysts were tested by employing them in the nitration of o-xylene. Mostly, 500 oC calcined catalyst sample was found to be most active for nitration reaction. Catalyst calcined at higher temperatures showed the negative influence on o-xylene conversion and 4-nitro-o-xylene selectivity. Conversion can be correlated with the presence of strong Brönsted acid sites over the catalyst surface whereas change in selectivity was found attributed to the pore diameter of the catalyst. These catalysts also performed satisfactorily, when used for nitration of other aromatics. No use of corrosive sulfuric acid and efficient reusability of the catalyst make the process environmentally friendly and economic. ©2010 BCREC UNDIP. All rights reserved(Received: 9th February 2010, Revised: 5th March 2010; Accepted: 18th March 2010[How to Cite: S.M. Kemdeo, V.S. Sapkal, G.N. Chaudhari. (2010. Mixed Oxide Supported MoO3 Catalyst: Preparation, Characterization and Activities in Nitration of o-xylene. Bulletin of Chemical Reaction Engineering and Catalysis, 5(1: 39-49. doi:10.9767/bcrec.5.1.7126.39-49][How to Link / DOI: http://dx.doi.org/10.9767/bcrec.5.1.7126.39-49 || or local:  http://ejournal.undip.ac.id/index.php/bcrec/article/view/7126 ]Cited by in: Taylor Francis |

  1. NEWS: Solid foundations?

    Science.gov (United States)

    2000-07-01

    Among the initiatives to be found at UK universities is a vocational award with the title `University Foundation Degree' at Nottingham Trent University. This qualification will be offered in 14 different subjects including four in the Faculty of Science and Mathematics, in the areas of applied biology, applied sciences, chemistry and physics. The courses will be available on a two-year full-time, three-year sandwich or a part-time basis. Set at a higher standard and specification than the Higher National Diplomas which it replaces, the UFD has been devised in consultation with industry and will cover the technical and specialist areas demanded by employers to combat skills shortages. The UFD in applied sciences concentrates on practical applications through laboratory, IT and project work, supported by lectures and seminars. At the end students can enter the employment market or transfer onto the second year of a degree course. Science-based careers including research and development would be the aim of those taking the UFD in physics. The first year develops the fundamentals of modern physics supported by studies in mathematics, IT and computer programming, whilst year 2 is vocational in nature with industrial problem solving and work experience as well as an academic theme associated with environmental aspects of the subject. Those who complete the UFD will be allowed automatic progression to a specified honours degree course and would normally be expected to study for a further two years for this award. However, those demonstrating an outstanding academic performance can transfer to the linked degree programme at the end of the first year via fast-track modules. Back in May the UK's Quality Assurance Agency (QAA) announced new standard benchmarks for degrees. These will be introduced into higher education institutions from 2002 to outline the knowledge, understanding and skills a student should gain from a particular higher education course. These benchmark

  2. 酸性水环境下桥梁桩基混凝土的配制与耐久性研究%Preparation and Durability of Concrete for Bridge Pile Foundation in Acidic Water Environment

    Institute of Scientific and Technical Information of China (English)

    刘江; 曾逢春; 蔡老虎; 王在喜; 邵然; 李北星

    2012-01-01

    Aiming at the preparation of bridge pile foundation concrete in acidic water environment,the effect of mineral admixtures, water-binder (w/b) ratio and pH value of erosion environment on acid resistance of concrete is studied. Cement is replaced by fly ash (FA) with the incorporation amount from 20% to 50% or by ground granulated blast-furnace slag (GGBS) from 35% to 65%. The w/b ratio is 0. 35,0. 39 and 0. 43 respectively. The acidic environmental conditions are simulated by using sulfuric acid solution with the pH value 1,2 or 4. The corrosion process was monitored by measuring the compressive strength for a period of one year. The results showed that a reduce in the w/b ratio improved the acid resistance of concrete. It was found that the improvement effect of mineral admixture on acid attack of concrete is dependent on the type and dosage mixture admixture and the pH value of simulation erosion solution. The high volume fly ash concrete mixtures performed better than high volume ground granulated blast-furnace slag concrete mixtures.%针对酸性水环境下桥梁桩基混凝土的配制,研究了矿物掺合料、水胶比以及侵蚀溶液pH值对混凝土抗酸侵蚀性能的影响.混凝土的粉煤灰掺量从20%~50%变化,矿粉掺量从35 %~65%变化,水胶比分别取0.35、0.39、0.43,酸性水侵蚀环境通过pH值分别为1、2、4的硫酸溶液模拟,抗酸性能通过测定1年龄期的混凝土抗压强度变化率表征.结果表明,降低水胶比有利于提高混凝土的抗酸侵蚀性能;矿物掺合料对混凝土耐酸性能的改善作用与其品种、掺量及模拟侵蚀溶液的pH值大小有关.大掺量粉煤灰混凝土比大掺量矿渣粉混凝土具有更好的耐酸性能.

  3. Vibration Based Wind Turbine Tower Foundation Design Utilizing Soil-Foundation-Structure Interaction

    Science.gov (United States)

    Al Satari, P. E. Mohamed; Hussain, S. E. Saif

    2008-07-01

    Wind turbines have been used to generate electricity as an alternative energy source to conventional fossil fuels. This case study is for multiple wind towers located at different villages in Alaska where severe arctic weather conditions exist. The towers are supported by two different types of foundations; large mat or deep piles foundations. Initially, a Reinforced Concrete (RC) mat foundation was utilized to provide the system with vertical and lateral support. Where soil conditions required it, a pile foundation solution was devised utilizing a 30″ thick RC mat containing an embedded steel grillage of W18 beams supported by 20″-24″ grouted or un-grouted piles. The mixing and casting of concrete in-situ has become the major source of cost and difficulty of construction at these remote Alaska sites. An all-steel foundation was proposed for faster installation and lower cost, but was found to impact the natural frequencies of the structural system by significantly softening the foundation system. The tower-foundation support structure thus became near-resonant with the operational frequencies of the wind turbine leading to a likelihood of structural instability or even collapse. A detailed 3D Finite-Element model of the original tower-foundation-pile system with RC foundation was created using SAP2000. Soil springs were included in the model based on soil properties obtained from the geotechnical consultant. The natural frequency from the model was verified against the tower manufacturer analytical and the experimental values. Where piles were used, numerous iterations were carried out to eliminate the need for the RC and optimize the design. An optimized design was achieved with enough separation between the natural and operational frequencies to prevent damage to the structural system eliminating the need for any RC encasement to the steel foundation or grouting to the piles.

  4. Level Classifications of Foundation Stiffness

    DEFF Research Database (Denmark)

    Ibsen, Lars Bo; Liingaard, Morten

    2007-01-01

    This article describes a foundation module developed and implemented in both HAWC and FLEX capable of to simulate the frequency dependent stiffness and damping of foundations e.g. pile, gravitation and bucket foundations.......This article describes a foundation module developed and implemented in both HAWC and FLEX capable of to simulate the frequency dependent stiffness and damping of foundations e.g. pile, gravitation and bucket foundations....

  5. Practitioner Perspectives on Foundational Capabilities

    Science.gov (United States)

    Leider, Jonathon P.; Juliano, Chrissie; Castrucci, Brian C.; Beitsch, Leslie M.; Dilley, Abby; Nelson, Rachel; Kaiman, Sherry; Sprague, James B.

    2015-01-01

    Context: National efforts are underway to classify a minimum set of public health services that all jurisdictions throughout the United States should provide regardless of location. Such a set of basic programs would be supported by crosscutting services, known as the “foundational capabilities” (FCs). These FCs are assessment services, preparedness and disaster response, policy development, communications, community partnership, and organizational support activities. Objective: To ascertain familiarity with the term and concept of FCs and gather related perspectives from state and local public health practitioners. Design: In fall 2013, we interviewed 50 leaders from state and local health departments. We asked about familiarity with the term “foundational capabilities,” as well as the broader concept of FCs. We attempted to triangulate the utility of the FC concept by asking respondents about priority programs and services, about perceived unique contributions made by public health, and about prevalence and funding for the FCs. Setting: Telephone-based interviews. Participants: Fifty leaders of state and local health departments. Main Outcome Measures: Practitioner familiarity with and perspectives on the FCs, information about current funding streams for public health, and the likelihood of creating nationwide FCs that would be recognized and accepted by all jurisdictions. Results: Slightly more than half of the leaders interviewed said that they were familiar with the concept of FCs. In most cases, health departments had all of the capabilities to some degree, although operationalization varied. Few indicated that current funding levels were sufficient to support implementing a minimum level of FCs nationally. Conclusions: Respondents were not able to articulate the current or optimal levels of services for the various capabilities, nor the costs associated with them. Further research is needed to understand the role of FCs as part of the foundational

  6. Preparation of Bimetallic Pd-Co Nanoparticles on Graphene Support for Use as Methanol Tolerant Oxygen Reduction Electrocatalysts

    Directory of Open Access Journals (Sweden)

    R. N. Singh

    2012-12-01

    Full Text Available Graphene-supported (40-x wt% Pd x wt% Co (0≤x≤13.33 alloys/composites have been prepared by a microwave-assisted polyol reduction method and been investigated for their structural and electrocatalytic properties for the oxygen reduction reaction (ORR in 0.5 M H2SO4 at 298 K. The study demonstrated that the bimetallic Pd-Co composite nanoparticles are, in fact, alloy nanoparticles with fcc crystalline structure. Partial substitution of Pd by Co (from 3.64 to 13.33 wt% in 40 wt% Pd/graphene decreases the lattice parameter as well as the crystallite size and increases the apparent catalytic activity, the latter, however, being the greatest with 8 wt% Co. The ORR activity of the active 32 wt% Pd 8wt% Co is found to be considerably low when it was deposited on the support multiwall carbon nanotubes under similar conditions. The rotating disk electrode study indicated that the ORR on 32 wt% Pd 8 wt% Co/GNS in 0.5 M H2SO4 follows approximately the four-electron pathway.

  7. Preparation of two kinds of superparamagnetic carriers-supported cis-platinum complexes and the comparison of their characteristics

    Institute of Scientific and Technical Information of China (English)

    XIE Minqiang; CHEN Shuaijun; XU Xueqing; LI Zhonghan; SHEN Hui; XU Jiarui

    2006-01-01

    The purpose of the research is to explore the effect of different surface modifiers in preparation of magnetic carriers-supported cis-plat- inum (CDDP) complex and their characteristics. Sodium alginate (SA) and N-oleoylsarcosine (NOSARK) were used respectively as linkers between CDDP and magnetic nanometer particles (MNP), and carriers-supported CDDP complex of carboxymethyl dextran (CM-dex) was used as the control. The physical and chemical characteristics of CDDP-MNP were measured by transmission electron microscope, photon correlation spectrum (PCS), spectrophotome- ter, etc. The advantages and disadvantages of the two linkers were analyzed through comparing the stability and quantity of reversibly bound CDDP. The cis-platinum magnetic nanometer particles were found to have the shape of approximately uniformly pellets under transmission electron microscope. The distribution of PCS diameter was 43―52 nm and the diameter of magnetic nucleus of CDDP- MNP complex was about 8.8±1.3 nm. The drug- loading capacity of SA is larger than that of NOSARK, and similar to that of CM-dex. The SA-modified CDDP-MNP solution remained stable after being kept at 4℃ for 40 d. SA is superior to NOSARK as a magnetic nanoparticles surface modifier. Natural SA can supersede CM-dex to serve as linker between CDDP and MNP. In practical application, we should take both the maximal reversible CDDP-bonding capacity and CDDP utilization rate into consideration.

  8. Modelling Foundations and Applications

    DEFF Research Database (Denmark)

    This book constitutes the refereed proceedings of the 8th European Conference on Modelling Foundations and Applications, held in Kgs. Lyngby, Denmark, in July 2012. The 20 revised full foundations track papers and 10 revised full applications track papers presented were carefully reviewed...... and selected from 81 submissions. Papers on all aspects of MDE were received, including topics such as architectural modelling and product lines, code generation, domain-specic modeling, metamodeling, model analysis and verication, model management, model transformation and simulation. The breadth of topics...

  9. Foundations of predictive analytics

    CERN Document Server

    Wu, James

    2012-01-01

    Drawing on the authors' two decades of experience in applied modeling and data mining, Foundations of Predictive Analytics presents the fundamental background required for analyzing data and building models for many practical applications, such as consumer behavior modeling, risk and marketing analytics, and other areas. It also discusses a variety of practical topics that are frequently missing from similar texts. The book begins with the statistical and linear algebra/matrix foundation of modeling methods, from distributions to cumulant and copula functions to Cornish--Fisher expansion and o

  10. Foundations of Inference

    CERN Document Server

    Knuth, Kevin H

    2010-01-01

    We present a foundation for inference that unites and significantly extends the approaches of Kolmogorov and Cox. Our approach is based on quantifying finite lattices of logical statements in a way that satisfies general lattice symmetries. With other applications in mind, our derivations assume minimal symmetries, relying on neither complementarity nor continuity or differentiability. Each relevant symmetry corresponds to an axiom of quantification, and these axioms are used to derive a unique set of rules governing quantification of the lattice. These rules form the familiar probability calculus. We also derive a unique quantification of divergence and information. Taken together these results form a simple and clear foundation for the quantification of inference.

  11. TCP/IP foundations

    CERN Document Server

    Blank, Andrew G

    2006-01-01

    The world of IT is always evolving, but in every area there are stable, core concepts that anyone just setting out needed to know last year, needs to know this year, and will still need to know next year. The purpose of the Foundations series is to identify these concepts and present them in a way that gives you the strongest possible starting point, no matter what your endeavor. TCP/IP Foundations provides essential knowledge about the two protocols that form the basis for the Internet, as well as many other networks. What you learn here will benefit you in the short term, as you acquire and

  12. Foundations of stochastic analysis

    CERN Document Server

    Rao, M M; Lukacs, E

    1981-01-01

    Foundations of Stochastic Analysis deals with the foundations of the theory of Kolmogorov and Bochner and its impact on the growth of stochastic analysis. Topics covered range from conditional expectations and probabilities to projective and direct limits, as well as martingales and likelihood ratios. Abstract martingales and their applications are also discussed. Comprised of five chapters, this volume begins with an overview of the basic Kolmogorov-Bochner theorem, followed by a discussion on conditional expectations and probabilities containing several characterizations of operators and mea

  13. Impedance of Bucket Foundations

    DEFF Research Database (Denmark)

    Andersen, Lars; Ibsen, Lars Bo; Liingaard, Morten

    2008-01-01

    Modern offshore wind turbines are flexible structures with natural frequencies near the excitation frequencies related to wave and wind-induced loads. In order to obtain a reliable prediction of the structural response, the dynamic stiffness of the foundation must be evaluated accurately...... solutions, finding that the present boundary-element-finite-element model provides accurate results. The influence of the soil properties as well as the skirt length of the foundation is analysed, and each dynamic stiffness component is computed as function of a non-dimensional frequency....

  14. Long-Term Ownership by Industrial Foundations

    DEFF Research Database (Denmark)

    Børsting, Christa Winther; Kuhn, Johan Moritz; Poulsen, Thomas

    2016-01-01

    Short-termism has become a serious concern for businesses and policy makers and this has inspired a search for governance arrangement to promote long term decision making. In this paper we study a particularly long-term ownership structure, which is fairly common in Northern Europe, particularly...... in Denmark. Industrial foundations are independent legal entities without owners or members typically with the dual objective of preserving the company and using excess profits for charity. We use a unique Danish data set to examine the governance of foundation-owned companies. We show that they are long-term...... in several respects. Foundations hold on to their shares for longer. Foundation-owned companies replace managers less frequently. They have more conservative capital structures with less leverage. Their companies survive longer. Their business decisions appear to be more long term. This paper supports...

  15. 国家自然科学基金资助口腔医学项目的结题绩效分析%Analysis of dental and craniofacial research programs supported by National Natural Science Foundation

    Institute of Scientific and Technical Information of China (English)

    江青松; 羡慕; 洪微; 徐岩英; 董尔丹

    2012-01-01

    目的 为了促进口腔医学领域国家自然科学基金各类项目的绩效管理,展示基金成果及研究进展.方法 收集国家自然科学基金(National Natural Science Foundation of China,NSFC)2000-2006年资助并分别于2003-2009年结题的口腔医学项目,根据项目负责人提交的结题报告,统计结题项目的人才培养、发表论文、获得专利及奖项、国内外学术交流情况和研究方向.结果 近7年共有307项口腔医学结题项目,其中面上项目185项,青年科学基金项目73项,地区基金13项,重点项目3项,国家杰出青年基金项目1项,其他32项.平均每个研究项目培养4名研究生;面上项目结题完成情况好于青年基金和地区基金;近7年每个项目在SCI收录期刊发表论文的数量逐年提高,且在口腔领域和生物医学领域重要国际学术期刊发表论文的数量保持稳定,约半数的负责人在结题时有SCI论文发表;共获得专利9项、省部级奖励13项,参加国内外交流610次.结论 NSFC资助口腔医学研究取得了重要研究进展和成果,促进了基础研究发展和人才培养,今后应加强自主创新意识,注重专利申请和论文质量的进一步提高.%Objective To enhance the fund efficiency of dental research programs supported by National Natural Science Foundation (NSFC) and to reveal the achievements and progresses of the funds.Methods The data of programs in dental and craniofacial field supported by NSFC from 1999 to 2006 and completed between 2003 and 2009 were collected based on the final reports by the investigators.The data of personnel training,research publication,patent,awards,and academic communication at domestic and international levels were all collected and analysed. Results There were 307 grants in total,including 185 general programs,73 Young Scientists Funds,13 regional funds,3 Key Programs,1 National Science Fund for Distinguished Young Scholars and 32 others.An average of 4

  16. Mastering Microsoft SharePoint Foundation 2010

    CERN Document Server

    Callahan, C A

    2011-01-01

    Everything IT professionals need to create collaborative solutions. SharePoint Foundation 2010 is the newest version of a powerful collaboration tool used in many Exchange-enabled organizations. This book gets network professionals and business application administrators up to speed on the updates, features, and installation procedures, preparing them to create powerful collaboration structures for their companies.: Microsoft SharePoint Foundation 2010 is the successor to Windows SharePoint Services 3.0 and is used with Microsoft Office SharePoint Server to enable collaboration; this guide pre

  17. Paying for Schools and Colleges. A Ford Foundation Report.

    Science.gov (United States)

    Ford Foundation, New York, NY.

    Over the past eight years the Ford Foundation has granted some $20 million for support of activities related to the financing and management of public and higher education. This report describes some of these efforts. The Foundation's activities in public education include support of analysis of the legal background of school finance, analysis of…

  18. Ford Foundation Plans Big Increase in Grants to Higher Education.

    Science.gov (United States)

    Desruisseaux, Paul; McMillen, Liz

    1988-01-01

    The Ford Foundation's increase, by almost one-fourth, of support to higher education is intended to reinvigorate college teaching, especially in the social sciences, and to improve opportunities for minority group faculty. Other new foundation efforts include support of a program to assist victims of Acquired Immune Deficiency Syndrome (AIDS).…

  19. Grouting for Pile Foundation Improvement

    NARCIS (Netherlands)

    Van der Stoel, A.E.C.

    2001-01-01

    The aim of this research was to examine the use of grouting methods for pile foundation improvement, a generic term that is used here to define both foundation renovation (increasing the bearing capacity of a pile foundation that has insufficient bearing capacity) and foundation protection (safeguar

  20. StreetWise: developing a serious game to support forensic mental health service users' preparation for discharge: a feasibility study.

    Science.gov (United States)

    Reynolds, L M; Davies, J P; Mann, B; Tulloch, S; Nidsjo, A; Hodge, P; Maiden, N; Simpson, A

    2017-05-01

    WHAT IS KNOWN ON THE SUBJECT?: Serious gaming can support learning and development. The use of serious games for skills development and the rehearsal of the management of events that cannot be replicated in real life is well established. Few serious games have been used in mental health services, and none in forensic mental health care. WHAT THIS PAPER ADDS TO EXISTING KNOWLEDGE?: How a serious game may be coproduced by forensic mental health service users and game developers The acceptability of the therapeutic use of serious gaming by forensic mental health service users and providers. WHAT ARE THE IMPLICATIONS FOR PRACTICE?: Computer games may be used by practitioners in their therapeutic work with forensic mental health service users. Mental health nurses to use serious games to creatively and safely bridge the gap for service users between receiving care in controlled environments and living more independent in the community. Introduction Assessment of users' skills and confidence to safely respond to risky community-based situations underpins discharge planning. Serious games have been used for skills development, and this study trialled their use in forensic mental health services. Aim The aim was to develop and test the acceptability and usability of an innovative serious game to support forensic mental health service users' preparation for discharge. Method A prototype serious game was developed by service users and researchers. Acceptability and usability testing was undertaken and service providers interviewed about the acceptability of serious gaming for forensic mental health services. Result A prototype game was produced and successfully trialled by service users. However, both service users and providers identified that work needed to be done to develop and test a game with greater complexity. Discussion The acceptability and usability of using serious games to support service users to develop skills needed for successful discharge was demonstrated

  1. Jeffrey Modell Foundation

    Science.gov (United States)

    ... with the PI Community VILLAGE PARK Apply to WIN or have fun at the Kids Zone AIRPORT Fly into our airport & become a “Dream ... Café Social Hub Vicki's Voice Resources Village Park WIN Patients Organizations World PI Week Kids Zone Airport Roots & Wings Jeffrey Modell Foundation Global PI ...

  2. Sarcoma Foundation of America

    Science.gov (United States)

    ... Google+ Twitter LinkedIn YouTube © 2017 Sarcoma Foundation of America | All Rights Reserved. | Terms of Use | Privacy Policy Website Design & Hosting by 270net Technologies, Inc. X - Enter Your Location - - or - Get your current location Home About Us History People Public Filings News & Media SFA in the ...

  3. National Emphysema Foundation

    Science.gov (United States)

    ... HOME THE LUNG COPD / Emphysema Advice for COPD/Emphysema Patients from Dr. Petty Asthma Interstitial Lung Disease PREVENTION Smoking Pollution and the Environment Occupational Health Hazards Early Detection LIVING with COPD Therapeutic ... joomla Welcome to the National Emphysema Foundation (NEF) This site is for the benefit ...

  4. Buckling of Bucket Foundations

    DEFF Research Database (Denmark)

    Madsen, Søren; Andersen, Lars Vabbersgaard; Ibsen, Lars Bo

    2012-01-01

    In this paper, the risk of structural buckling during installation of large-diameter bucket foundations is addressed using numerical methods. Imperfect geometries are introduced based on the pre-buckling mode shapes from a linear Eigenvalue buckling analysis. Various imperfect geometries are intr...

  5. Foundations of factor analysis

    CERN Document Server

    Mulaik, Stanley A

    2009-01-01

    Introduction Factor Analysis and Structural Theories Brief History of Factor Analysis as a Linear Model Example of Factor AnalysisMathematical Foundations for Factor Analysis Introduction Scalar AlgebraVectorsMatrix AlgebraDeterminants Treatment of Variables as Vectors Maxima and Minima of FunctionsComposite Variables and Linear Transformations Introduction Composite Variables Unweighted Composite VariablesDifferentially Weighted Composites Matrix EquationsMulti

  6. The Broad Foundations, 2006

    Science.gov (United States)

    Broad Foundation, 2006

    2006-01-01

    The mission of the Broad Foundations is to transform K-12 urban public education through better governance, management, labor relations and competition; make significant contributions to advance major scientific and medical research; foster public appreciation of contemporary art by increasing access for audiences worldwide; and lead and…

  7. Preparation of ceria-zirconia by modified coprecipitation method and its supported Pd-only three-way catalyst.

    Science.gov (United States)

    Lan, Li; Chen, Shanhu; Cao, Yi; Zhao, Ming; Gong, Maochu; Chen, Yaoqiang

    2015-07-15

    A CeO2-ZrO2 compound with mixed phase composition (CZ4) was prepared by modified co-precipitation method, and for comparison, single-phase Ce(0.2)Zr(0.8)O2, Ce(0.5)Zr(0.5)O2 and Ce(0.8)Zr(0.2)O2 were synthesized via simultaneous co-precipitation method. The textural, structural and redox properties, together with the catalytic performance of the supported Pd-only three-way catalysts were investigated systematically. The results revealed that the generation of numerous interface sites in Pd/CZ4 due to its mixed phase composition (as confirmed by TEM observation) had a positive influence on modifying its structural, redox properties and thermal stability. The XRD and Raman results revealed that the highest structural stability was obtained by Pd/CZ4 with negligible lattice variation and slightest grain growth after aging treatment. The XPS analysis demonstrated that the compositional heterogeneity of Pd/CZ4 could facilitate the formation of Ce(3+), and was beneficial to preserve high dispersion of Pd as well as maintain Pd at a more oxidized state. The H2-TPR and oxygen storage capacity measurements indicated that Pd/CZ4 possessed highest reduction ability as well as largest oxygen storage capacity regardless of thermal aging treatment. And consequently Pd/CZ4 exhibited improved three-way catalytic activity compared with the catalysts supported on single-phase Ce(x)Zr(1-x)O2 both before and after thermal aging treatment.

  8. The Preparation and Characterization of Immobilized TiO2/PEG by Using DSAT as a Support Binder

    Directory of Open Access Journals (Sweden)

    Wan Izhan Nawawi

    2016-12-01

    Full Text Available Immobilized TiO2 was prepared by adding a small composition of polyethylene glycol (PEG as a binder, and this paper reported for the very first time the formation of C=O from oxidized PEG, which acted as an electron injector in enhancing photoactivity. Water-based TiO2 with PEG formulation was deposited by using a brush technique onto double-sided adhesive tape (DSAT as a support binder to increase the adhesiveness of immobilized TiO2. The photocatalytic activity of immobilized TiO2-PEG was measured by photodegradation of 12 mg·L−1 methylene blue (MB dye. The optimum condition of immobilized TiO2-PEG was observed at TiO2/PEG-2 (TP2 with 10:0.1 for the TiO2/PEG ratio, which resulted in a 1.8-times higher photodegradation rate as compared to the suspension mode of pristine TiO2. The high photodegradation rate was due to the formation of the active C=O bond from oxidized PEG binder in immobilized TiO2-PEG as observed by Fourier transform infrared and X-ray photoelectron spectroscopy analyses. The presence of C=O has escalated the photoactivity by forming an electron injector to a conduction band of TiO2 as proven by higher photoluminescence intensity obtained for TP2 as compared to pristine TiO2. The TP2 sample has also increased its adhesiveness when DSAT is applied as a support binder where it can be recycled up to eight times and comparable to recent photocatalysis cycle developments.

  9. Preparation, characterization of Mo catalysts supported on Ni- containing calcium deficient hydroxyapatite and reactivity for the thiophene HDS reaction

    Directory of Open Access Journals (Sweden)

    Cherif A.

    2013-09-01

    Full Text Available Ni-containing Calcium Hydroxyapatite (NiCaHAp; 3.31 wt.% Ni was synthesized by coprecipitation and used as catalyst support. Molybdenum was supported on NiCaHAp by impregnation using ammonium heptamolybdate. The prepared catalysts Mo(x/NiCaHAp (x: 2 to 8 wt % in Mo were characterized by elemental analysis, XRD, FT-IR, N2 adsorption-desorption and TEM-EDX. The catalysts were sulfided in-situ at 673 K under flowing H2S/H2 (15 Vol.% H2S and tested in hydrodesulfurization (HDS of thiophene at 673 K. The main XRD peaks of hydroxyapatite CaHAp phase were observed in all samples and a peak due probably to crystalline MoO3 phase was also identified from the results. However, no crystalline phase of NiO was found for the catalysts, which showed its Ni species were highly dispersed. The sulfided catalysts Mo(x/NiCaHAp presented are active in HDS of thiophene, despite the presence of some large MoO3 crystallites and incomplete sulfidation. This activity may be due to interaction of NiO and MoO3 on CaHAp resulting in the formation of Ni-Mo-S phase under flowing H2S/H2. When the molybdenum content increased the HDS activity increasead slightly, which was caused by the agglomeration of MoO3. The Mo(8/NiCaHAp catalyst is about two times less active for thiophene HDS than the commercial NiMoP/Al2O3.

  10. PREPARATION AND CHARACTERIZATION OF SPHERICAL PP/PB ALLOYS WITH MgCl2-SUPPORTED ZIEGLER-NATTA CATALYST

    Institute of Scientific and Technical Information of China (English)

    Ai-hua He; Yang-wei Shi; Guo-qing Liu; Wei Yao; Bao-chen Huang

    2012-01-01

    Polypropylene (PP)/polybutene-1 (PB) alloys within reactor were prepared by MgCl2-supported Ziegler-Natta catalyst with sequential two-stage polymerization technology.First,propylene homo-polymerizations were carried out to form isotactic polypropylene (iPP) particles containing active catalyst.Then,butene-1 was subsequently polymerized to form polybutene-1 phase inside the iPP particles.Finally,iPP/PB alloys with spherical shape and adjustable PB content were synthesized.The catalytic activity and catalytic stereospecificity of the Z-N catalyst in the two-stage polymerization process are discussed.The composition and physical properties of the PP alloys were characterized by FT-IR,13C-NMR,SEM,DSC and XRD.It was found that the in-reactor PP alloys are mainly composed of PP and PB with a little amount of poly(buteneco-propylene) random copolymers and poly(butene-block-propylene) block copolymers.SEM measurements verified that the PB phases with size in the range of 300-400 nm dispersed in the PP matrix uniformly.The incorporation of PB upon the PP matrix affects the properties of final products greatly.

  11. Preparation of alumina supported on carbon nano tubes and its application in fluoride adsorption from an aqueous solution

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    A novel material, alumina supported on carbon nanotubes (Al2O3/CNT), was prepared from carbon nanotubes and Al(NO3)3. X-ray diffraction (XRD) spectra demonstrate that alumina is amorphous, and scanning electron microscope (SEM) images show that CNT and alumina are homogeneously mixed. Furthermore, the fluoride adsorption behavior on the surface of Ai2O3/CNT has been investigated and compared with other adsorbents. The results indicate that Al2O3/CNT has a high adsorption capacity, with a saturation adsorption capacity of 39.4 mg/g. It is also found that the adsorption capacity of AI2O3/CNT is 3.0-4.5 times that of γ-Al2O3 while almost equal to that of IRA-410polymeric resin at 25 ℃. The adsorption isotherms of fluoride on Al2O3/CNT fit the Freundlich equation well, and optimal pH ranging from 5.0 to 9.0.``

  12. Preparation of highly active manganese oxides supported on functionalized MWNTs for low temperature NOx reduction with NH3

    Science.gov (United States)

    Pourkhalil, Mahnaz; Moghaddam, Abdolsamad Zarringhalam; Rashidi, Alimorad; Towfighi, Jafar; Mortazavi, Yadollah

    2013-08-01

    Manganese oxide catalysts (MnOx) supported on functionalized multi-walled carbon nanotubes (FMWNTs) for low temperature selective catalytic reduction (LTSCR) of nitrogen oxides (NOx) with NH3 in the presence of excess O2 were prepared by the incipient wetness impregnation method. These catalysts were characterized by N2 adsorption, Fourier transform infrared spectroscopy (FTIR), transmission electron microscope (TEM), X-ray diffraction (XRD), thermal gravimetric analysis (TGA) and H2-temperature programmed reduction (H2-TPR) methods. The effects of reaction temperature, MnOx loading, calcination temperature and calcination time were investigated. The presence of surface nitrate species under moderate calcination conditions may play a favorable role in the LTSCR of NOx with NH3. Under the reaction conditions of 200 °C, 1 bar, NO = NH3 = 900 ppm, O2 = 5 vol%, GHSV = 30,000 h-1 and 12 wt% MnOx, NOx conversion and N2 selectivity were 97% and 99.5%, respectively. The SCR activity was reduced in the presence of 100 ppm SO2 and 2.5 vol% H2O from 97% to 92% within 6 h at 200 °C, however such an effect was shown to be reversible by exposing the catalyst to a helium flow for 2 h at 350 °C due to thermal decomposition of ammonium sulphate salts.

  13. Preparation of symmetric and asymmetric aromatic azo compounds from aromatic amines or nitro compounds using supported gold catalysts.

    Science.gov (United States)

    Grirrane, Abdessamad; Corma, Avelino; Garcia, Hermenegildo

    2010-03-01

    This protocol describes the aerobic oxidation of aromatic anilines to aromatic azo compounds using gold (Au) nanoparticles supported on TiO(2) as a catalyst. Yields above 98% are achieved under a few bars of oxygen pressure. It should be noted that the use of stoichiometric amounts of environmentally unfriendly reagents, e.g., transition metals and nitrites, commonly used in current syntheses of azo compounds, is avoided using this approach. The protocol is illustrated with the synthesis of parent azobenzene from aniline, and this reaction takes 22 h. Au on TiO(2) can also be used as a hydrogenation catalyst, making it possible to prepare azo compounds directly from nitroaromatics through a two-step (hydrogenation followed by aerobic oxidation), one-pot, one-catalyst reaction. In addition, the catalytic process is efficient for the synthesis of symmetric and a range of asymmetric aromatic azo compounds from the mixtures of two anilines substituted with electron-donor and electron-acceptor substituents.

  14. Preparation of Graphene-supported Co Nanocomposite%石墨烯载钴材料的制备

    Institute of Scientific and Technical Information of China (English)

    雷芸; 张科; 潘群; 邹琴; 袁继祖

    2011-01-01

    本实验以150μm鳞片状石墨为原料,采用Hummers法制备氧化石墨,经超声波振荡得到氧化石墨烯,加入水合肼回流制得石墨烯材料.氧化石墨烯与CoSO4溶液混合,采用功能离子预吸附的方式,将金属离子有效地分散在氧化石墨烯载体上,原位还原金属颗粒和石墨烯,制备石墨烯载钴材料.%Graphite oxide is prepared by Hummers method using 150 μm flake graphite as raw materials,and further treated with super-sonic oscillation to get grapheme oxide. After hydrazine hydrate was added,grapheme oxide was reduced to graphene by reflux. Graphene oxide was mixed with CoSO4, and treated with hydrazine hydrate to obtain graphene supporting Co nanoparticles by reflux.

  15. Raman Spectroscopy and Electrochemical Investigations of Pt Electrocatalyst Supported on Carbon Prepared through Plasma Pyrolysis of Natural Gas

    Directory of Open Access Journals (Sweden)

    Tereza Cristina Santos Evangelista

    2015-01-01

    Full Text Available Physicochemical and electrochemical characterisations of Pt-based electrocatalysts supported on carbon (Vulcan carbon, C1, and carbon produced by plasma pyrolysis of natural gas, C2 toward ethanol electrooxidation were investigated. The Pt20/C180 and Pt20/C280 electrocatalysts were prepared by thermal decomposition of polymeric precursors at 350°C. The electrochemical and physicochemical characterisations of the electrocatalysts were performed by means of X-ray diffraction (XRD, transmission electron microscope (TEM, Raman scattering, cyclic voltammetry, and chronoamperometry tests. The XRD results show that the Pt-based electrocatalysts present platinum metallic which is face-centered cubic structure. The results indicate that the Pt20/C180 electrocatalyst has a smaller particle size (10.1–6.9 nm compared with the Pt20/C280 electrocatalyst; however, the Pt20/C280 particle sizes are similar (12.8–10.4 nm and almost independent of the reflection planes, which suggests that the Pt crystallites grow with a radial shape. Raman results reveal that both Vulcan carbon and plasma carbon are graphite-like materials consisting mostly of sp2 carbon. Cyclic voltammetry and chronoamperometry data obtained in this study indicate that the deposition of Pt on plasma carbon increases its electrocatalytic activity toward ethanol oxidation reaction.

  16. The Preparation of Compressible and Fire-Resistant Sponge-Supported Reduced Graphene Oxide Aerogel for Electromagnetic Interference Shielding.

    Science.gov (United States)

    Liu, Changzhen; Ye, Shibing; Feng, Jiachun

    2016-09-20

    We here report a facile method to fabricate a sponge-supported reduced graphene oxide aerogel (S-RGOA) using a commercial melamine sponge and graphene oxide (GO). Firstly, GO sheets were self-assembled within the melamine sponge by the assistance of a chemical cross-linking agent; and then, freeze-drying and thermal treatment were adopted to prepare S-RGOA, in which continuous porous reduced graphene oxide (RGO) network formed between the skeleton. The resulting S-RGOA exhibited a high electromagnetic interference shielding effectiveness (EMI SE) of 20.4-27.3 dB in 8-12 GHz and the specific EMI SE could reach 1437 dB⋅cm(3) g(-1) . The mechanical test suggests that the lightweight S-RGOA is compressible and possesses low energy dissipation. Burning and TGA measurements indicate that S-RGOA is fire-resistant and has excellent thermal stability. Our work provides an economical and environmentally-friendly method to fabricate RGO aerogels for using as electromagnetic interference materials.

  17. Al 2O 3 supported Ru catalysts prepared by thermolysis of Ru 3(CO) 12 for catalytic wet air oxidation

    Science.gov (United States)

    Yu, Chaoying; Zhao, Peiqing; Chen, Gexin; Hu, Bin

    2011-06-01

    Low loading catalysts Ru/γ-Al 2O 3 and Ru-Ce/γ-Al 2O 3 were prepared by thermolysis of Ru 3(CO) 12 on γ-Al 2O 3. The catalysts were characterized by XPS, XRD and SEM. Two new Ru species (Ru A and Ru B) were detected during the Ru 3(CO) 12 decomposition process due to chemical interaction with the active OH groups on the surface of Al 2O 3 support, and the reduction of them can lead to more dispersed metallic phases. The sample was completely decomposed at 673 K in H 2, and RuO 2 was formed with minor amounts of Ru 0. When the temperature was increased to 773 K to heat the sample, the ratio of Ru 0 to RuO 2 increased. However, after the addition of CeO 2, only RuO 2 was detected on surface. The catalysts exhibited high activities in Catalytic Wet Air Oxidation (CWAO) of different organic compounds at high concentration such as isopropyl alcohol, phenol, acetic acids and N,N-dimethylformamide, which is attributed to the better dispersion of Ru particles and the addition of CeO 2 further enhanced number of effectively active sites on the cluster-derived catalyst surface.

  18. Preparation of Pseudo-boehmite and γ-Al2O3 Support by Neutralization of NaAlO2 Solution with CO2

    Institute of Scientific and Technical Information of China (English)

    Yang Qinghe; Liu Bin; Li Dadong; Shi Yahua; Nie Hong; Kang Xiaohong

    2003-01-01

    Pseudo-boehmite (PB) and γ-Al2O3 support are prepared by neutralization ofNaAlO2 solution with CO2(mixed gases) on bench scale. PB, typically loosely packed, fibrous particle/aggregate, is obtained by adjustingconcentration and flow rate of CO2 and concentration of NaAlO2 solution at a pH level lower than that commonlyassumed during neutralization. After calcination at different temperatures, γ-Al2O3 supports with different pore vol-ume and different pore size are prepared at different conditions.

  19. 陆上风机圆形基础底板承载力计算方法研究%Calculation Method for Bearing Capacity of Circular Foundation Slab Supporting Onshore Wind Turbine

    Institute of Scientific and Technical Information of China (English)

    梅毕祥; 杨敏

    2016-01-01

    不同于常规构筑物基础,陆上风机圆形基础具有受荷动力效应显著、截面尺寸大等特点.以常规构筑物圆板基础破坏模式为基础,使用极限平衡方法,对风机基础在主要破坏模式下的极限荷载进行了理论推导,开展了风机基础截面尺寸、径环向配筋量等参量的影响分析.分析表明,风机圆形基础的承载力由基础外悬挑扇形块破坏模式确定,其他破坏模式不起控制作用;烟囱规范的长悬挑圆形基础承载力计算公式不适用于风机基础设计;本文提出了风机圆形基础承载力的计算公式及相配套的设计建议,可望为风机基础规范的制定和基础工程设计提供有益参考.%Different from conventional building foundation, obvious load dynamic effect and large size of cross-section characterize the circular foundation of onshore wind turbine. Based on the failure patterns of circular slab foundation for conventional building, limiting equilibrium method is adopted to carry out theoretical derivation of limit load on wind turbine foundation in major failure patterns, and make impact analysis of the parameters including the section size and radial reinforcement of wind turbine foundation. The analysis results show that the bearing capacity of circular foundation slab is determined by the failure pattern of fan-shaped cantilever block and other failure patterns do not apply. Code of chimneys includes the calculation formula for the bearing capacity of long-cantilever circular foundation, which isn't suitable for the design of wind turbine foundation. Thus a new formula for calculating the bearing capacity of wind turbine circular foundation and relevant design suggestions are proposed, which may serve as a reference for the establishment of code of wind turbine foundation and the design of foundation engineering.

  20. Preparation and characterization of ZnO microfiltration membrane and its support using kaolin (DD3 and CaCO3

    Directory of Open Access Journals (Sweden)

    B. Boudaira

    Full Text Available Abstract The objective of the present paper was to prepare a ceramic support with membrane. Tubular ceramic supports prepared from kaolin (DD3 and calcium carbonate with 6 and 10 mm inner and outer diameters, respectively, were extruded and sintered at 1200 °C. It has been found that sintered supports had interesting characteristics: average pore size of about 5µm, porosity of about 50%, and monomodal pore size distribution. This support was used to be substrate for a membrane layer of microfiltration. This membrane layer was elaborated from zinc oxide, using slip casting technique. The specimens were subsequently sintered at 1000 °C. The microstructure and porosity as well as the permeability have also been studied. It has been found that the average pore size was about 1.2µm, the layer thickness was ~33µm, and the water permeability measured was about 880 L.h-1.m-2.bar-1.

  1. Preparation and Application of Perchloric Acid Supported on Alumina (Al2O3-HCIO4) to the Synthesis of α-(α-Amidobenzyl)-β-naphthols

    Institute of Scientific and Technical Information of China (English)

    SHATERIAN,Hamid Reza; KHORAMI,Fahimeh; AMIRZADEH,Azita; GHASHANG,Majid

    2009-01-01

    Preparation of perchloric acid supported on alumina and its primary application as a solid supported heterogeneous catalyst to the synthesis of α-(α-amidobenzyl)-β-naphthols by a one-pot,three-component condensation of benzaldehydes,β-naphthol and acetamide or benzamide under thermal solvent-free conditions were described.The present methodology offers several advantages such as simple procedure,shorter reaction time,and excellent yields.

  2. Mathematical foundations of neurocomputing

    Energy Technology Data Exchange (ETDEWEB)

    Amari, S. (Tokyo Univ. (Japan). Faculty of Engineering)

    1990-09-01

    Neurocomputing makes use of parallel dynamical interactions of modifiable neuron-like elements. It is important to show, by mathematical treatments, the capabilities and limitations of information processing by various architectures of neural networks. This paper, gives mathematical foundations to neurocomputing. It considers the capabilities of transformations by layered networks, statistical neurodynamics, the dynamical characteristics of associative memory, a general theory of neural learning, and self-organization of neural networks.

  3. The Foundation of Morality

    OpenAIRE

    Juul-Larsen, Astrid; Cathmont-Prynn, Penelope Josefine; Magnúsdóttir, Gu∂rún Ása; Brudvig, Mette Rubeck; Kirkegaard, Marie Louise

    2008-01-01

    In this project we have been working on the phenomenon of morality, more specifically the foundation in relation to religion. We have been looking into both psychology and philosophy, in aim to find answers to our research. As main objects of investigation we have worked with the philosopher and psychologist William James, along with the theologian Paul Tillich. Furthermore we have looked into the Divine command theory, along with several theories and arguments from various professionals with...

  4. Foundations of image science

    CERN Document Server

    Barrett, Harrison H

    2013-01-01

    Winner of the 2006 Joseph W. Goodman Book Writing Award! A comprehensive treatment of the principles, mathematics, and statistics of image science In today's visually oriented society, images play an important role in conveying messages. From seismic imaging to satellite images to medical images, our modern society would be lost without images to enhance our understanding of our health, our culture, and our world. Foundations of Image Science presents a comprehensive treatment of the principles, mathematics, and st

  5. Stochastic Games. I. Foundations,

    Science.gov (United States)

    1982-04-01

    stimulate discussion and critical coment. Requests for single copies of a Paper will be filled by the Cowles Foundation within the limits of the supply...underpinning for the theory of stochastic games. Section 2 is a reworking of the Bevley- Kohlberg result integrated with Shapley’s; the "black magic" of... Kohlberg : The values of the r-discount game, and the stationary optimal strategies, have Puiseaux expansions. L.. 11" 6 3. More generally, consider an

  6. Buckling of Bucket Foundations

    DEFF Research Database (Denmark)

    Madsen, Søren; Andersen, Lars Vabbersgaard; Ibsen, Lars Bo

    2012-01-01

    In this paper, the risk of structural buckling during installation of large-diameter bucket foundations is addressed using numerical methods. Imperfect geometries are introduced based on the pre-buckling mode shapes from a linear Eigenvalue buckling analysis. Various imperfect geometries...... are introduced to reveal how sensitive the buckling load is to the mentioned imperfections. Including the first 21 mode shapes as imperfect geometries reduces the buckling pressure compared to only considering mode 1....

  7. Topological Foundations of Electromagnetism

    CERN Document Server

    Barrett, Terrence W

    2008-01-01

    Topological Foundations of Electromagnetism seeks a fundamental understanding of the dynamics of electromagnetism; and marshals the evidence that in certain precisely defined topological conditions, electromagnetic theory (Maxwell's theory) must be extended or generalized in order to provide an explanation and understanding of, until now, unusual electromagnetic phenomena. Key to this generalization is an understanding of the circumstances under which the so-called A potential fields have physical effects. Basic to the approach taken is that the topological composition of electromagnetic field

  8. Mathematical foundations of thermodynamics

    CERN Document Server

    Giles, R; Stark, M; Ulam, S

    2013-01-01

    Mathematical Foundations of Thermodynamics details the core concepts of the mathematical principles employed in thermodynamics. The book discusses the topics in a way that physical meanings are assigned to the theoretical terms. The coverage of the text includes the mechanical systems and adiabatic processes; topological considerations; and equilibrium states and potentials. The book also covers Galilean thermodynamics; symmetry in thermodynamics; and special relativistic thermodynamics. The book will be of great interest to practitioners and researchers of disciplines that deal with thermodyn

  9. Design of road foundations

    OpenAIRE

    Thom, Nicholas

    1988-01-01

    Research has been conducted into the fundamental mechanical properties of a granular material. This has involved the use of both a repeated load triaxial apparatus and a new hollow cylinder apparatus, which has required development and modification. Building on the foundation of earlier research at Nottingham, models have been developed which predict the stress-strain behaviour of a dry granular material under any combination of applied stresses. This includes repeatable elastic behaviour and...

  10. Wronski's Foundations of Mathematics.

    Science.gov (United States)

    Wagner, Roi

    2016-09-01

    Argument This paper reconstructs Wronski's philosophical foundations of mathematics. It uses his critique of Lagrange's algebraic analysis as a vignette to introduce the problems that he raised, and argues that these problems have not been properly appreciated by his contemporaries and subsequent commentators. The paper goes on to reconstruct Wronski's mathematical law of creation and his notions of theory and techne, in order to put his objections to Lagrange in their philosophical context. Finally, Wronski's proof of his universal law (the expansion of a given function by any series of functions) is reviewed in terms of the above reconstruction. I argue that Wronski's philosophical approach poses an alternative to the views of his contemporary mainstream mathematicians, which brings up the contingency of their choices, and bridges the foundational concerns of early modernity with those of the twentieth-century foundations crisis. I also argue that Wronski's views may be useful to contemporary philosophy of mathematical practice, if they are read against their metaphysical grain.

  11. Foundations of chaotic mixing.

    Science.gov (United States)

    Wiggins, Stephen; Ottino, Julio M

    2004-05-15

    The simplest mixing problem corresponds to the mixing of a fluid with itself; this case provides a foundation on which the subject rests. The objective here is to study mixing independently of the mechanisms used to create the motion and review elements of theory focusing mostly on mathematical foundations and minimal models. The flows under consideration will be of two types: two-dimensional (2D) 'blinking flows', or three-dimensional (3D) duct flows. Given that mixing in continuous 3D duct flows depends critically on cross-sectional mixing, and that many microfluidic applications involve continuous flows, we focus on the essential aspects of mixing in 2D flows, as they provide a foundation from which to base our understanding of more complex cases. The baker's transformation is taken as the centrepiece for describing the dynamical systems framework. In particular, a hierarchy of characterizations of mixing exist, Bernoulli --> mixing --> ergodic, ordered according to the quality of mixing (the strongest first). Most importantly for the design process, we show how the so-called linked twist maps function as a minimal picture of mixing, provide a mathematical structure for understanding the type of 2D flows that arise in many micromixers already built, and give conditions guaranteeing the best quality mixing. Extensions of these concepts lead to first-principle-based designs without resorting to lengthy computations.

  12. IT Service Management Foundation Practice Questions For ITIL Foundation Exam candidates

    CERN Document Server

    Mann, Steve; Mann, Steve; Mear, Nigel

    2012-01-01

    The most authoritative guide to preparing for the ITIL® Foundation Certificate in IT Service Management. This new edition is compatible with the 2011 update to ITIL®. It includes an extensive range of practice questions and utilises the experience of three independent service management consultants and lecturers. An ITIL® licensed product.

  13. Effect of screw access hole preparation on fracture load of implant-supported zirconia-based crowns: an in vitro study

    Science.gov (United States)

    Mokhtarpour, Hadi; Eftekhar Ashtiani, Reza; Mahshid, Minoo; Tabatabaian, Farhad; Alikhasi, Marzieh

    2016-01-01

    Background. Fracture load of implant-supported restorations is an important factor in clinical success. This study evaluated the effect of two techniques for screw access hole preparation on the fracture load of cement-screw-retained implant-supported zirconia-based crowns. Methods. Thirty similar cement-screw-retained implant-supported zirconia-based maxillary central incisor crowns were evaluated in three groups of 10. Group NH: with no screw access holes for the control; Group HBS: with screw access holes prepared with a machine before zirconia sintering; Group HAS: with screw access holes prepared manually after zirconia sintering. In group HBS, the access holes were virtually designed and prepared by a computer-assisted design/computer-assisted manufacturing system. In group HAS, the access holes were manually prepared after zirconia sintering using a diamond bur. The dimensions of the screw access holes were equal in both groups. The crowns were cemented onto same-size abutments and were then subjected to thermocycling. The fracture load values of the crowns were measured using a universal testing machine. Data were analyzed with ANOVA and Tukey test (P zirconia-based crowns decreased the fracture load. PMID:27651885

  14. Effect of screw access hole preparation on fracture load of implant-supported zirconia-based crowns: an in vitro study.

    Science.gov (United States)

    Mokhtarpour, Hadi; Eftekhar Ashtiani, Reza; Mahshid, Minoo; Tabatabaian, Farhad; Alikhasi, Marzieh

    2016-01-01

    Background. Fracture load of implant-supported restorations is an important factor in clinical success. This study evaluated the effect of two techniques for screw access hole preparation on the fracture load of cement-screw-retained implant-supported zirconia-based crowns. Methods. Thirty similar cement-screw-retained implant-supported zirconia-based maxillary central incisor crowns were evaluated in three groups of 10. Group NH: with no screw access holes for the control; Group HBS: with screw access holes prepared with a machine before zirconia sintering; Group HAS: with screw access holes prepared manually after zirconia sintering. In group HBS, the access holes were virtually designed and prepared by a computer-assisted design/computer-assisted manufacturing system. In group HAS, the access holes were manually prepared after zirconia sintering using a diamond bur. The dimensions of the screw access holes were equal in both groups. The crowns were cemented onto same-size abutments and were then subjected to thermocycling. The fracture load values of the crowns were measured using a universal testing machine. Data were analyzed with ANOVA and Tukey test (P zirconia-based crowns decreased the fracture load.

  15. SMW工法支护条件下基坑工程监测试验分析%Foundation Pit Engineering Monitoring Experimental Analysis under a Condition of SMW Method Support

    Institute of Scientific and Technical Information of China (English)

    王彦君; 秦云虎

    2016-01-01

    徐州某基坑工程开挖深度约9.0 m,选择⑥层褐黄-灰褐色黏土作为持力层。为分析SMW工法施工中对工程周边建筑物的影响情况,结合基坑工程特点,选择周边建筑物的沉降、围护结构顶部水平位移和垂直位移、周边地表竖向位移、支撑(立柱)沉/隆监测、围护结构内力、深层水平位移等主项目进行了监测。结果表明:各测点最大沉降差为10.43 mm,对于长度为50 m的建筑物其倾斜率为0.0002;桩顶水平位最大水平位移为21 mm;最小为14 mm,且逐渐趋于稳定;基坑9~16 m土体变形较小且基本保持稳定,开挖时最大位移变化率为0.71 mm/d,最大位移与最大位移速率均小于设计要求的40 mm和3 mm/d。监测分析得到的规律和结论对徐州地区SMW工法的运用提供参考,具有一定的实用价值。%The excavation depth of a foundation pit engineering in Xuzhou is about 9.0m, and the brownish yellow-grayish brown clay is selected as bearing stratum. To analyze impacts on surrounding buildings from SMW method construction, in consideration of founda⁃tion pit engineering characters carried out monitoring on main items including surrounding building subsidence, building envelope top horizontal and vertical displacements, surrounding ground vertical displacement, support (vertical shaft) sink/upheaval, building enve⁃lope internal force and deep layer horizontal displacement etc. The result has shown that the maximum differential settlement of each observation point is 10.43mm;inclination of 50m long building is 0.000 2;pile top level maximum horizontal displacement is 21mm, minimum 14mm, and gradually tends to be stable;foundation pit 9~16m soil mass deformation is little and basically stable;maximum displacement change rate during excavation is 0.71mm/d, maximum displacement and maximum displacement rate all less than de⁃signed 40mm and 3mm/d. Monitoring analyzed regular pattern and

  16. Preparation and study of IrO2/SiC–Si supported anode catalyst for high temperature PEM steam electrolysers

    DEFF Research Database (Denmark)

    Nikiforov, Aleksey; Tomás García, Antonio Luis; Petrushina, Irina;

    2011-01-01

    of the IrO2 particles, affecting the IrO2 particle size. The prepared catalysts were electrochemically characterised by cyclic voltammetry experiments at 25,80,120 and 150 °C. In accordance with the observed variation in particle size, a support loading of up to 20% improved the activity of the catalyst...

  17. Application of 2-cyanoethyl n,n,n′,n′-tetraisopropylphosphorodiamidite for in situ preparation of deoxyribonucleoside phosphoramidites and their use in polymer-supported synthesis of oligodeoxyribonucleotides

    DEFF Research Database (Denmark)

    Nielsen, John; Taagaard, Michael; Marugg, John E.

    1986-01-01

    Deoxyribonucleoside phosphoramidites are prepared in situ from 5′-O,N-protected deoxyribonucleosides and 2-cyanoethyl N,N,N′,N′-tetraisopropylphosphorodiamidite with tetrazole as catalyst, and the solutions applied directly on an automatic solid-phase DNA synthesizer. Using LCAA-CPG support and a...

  18. Application of microgels as polymer supports for organic synthesis: preparation of a small phthalide library, a scavenger, and a borohydride reagent.

    Science.gov (United States)

    Shimomura, Osamu; Clapham, Bruce; Spanka, Carsten; Mahajan, Suresh; Janda, Kim D

    2002-01-01

    Microgel polymers containing a series of functional groups have been prepared. These microgels were composed of cross-linked poly(styrene) and were prepared by radical polymerization in solution. The microgel polymers exhibit good solubility in an array of different organic solvents, and in addition, they can be efficiently precipitated by the addition of methanol and isolated by filtration. A nine-member phthalide library was synthesized using an aminomethyl-functionalized microgel 5. To further demonstrate the versatility of these microgel polymers, tris(2-aminoethyl)amino microgel 11 was examined as a scavenger reagent to remove unreacted isocyanate after a urea synthesis. Finally, a microgel-supported ammonium borohydride reagent 14 was successfully prepared and used as a reducing agent. Notable features of these microgels are that in all applications the progress of the reaction could be monitored by standard NMR techniques and their preparation is performed using common glassware and techniques found in all organic laboratories.

  19. High-Pressure Preparation of High-Density Cu2ZnSnS4 Materials

    Science.gov (United States)

    Yi-Ming, Li; Li-Xia, Qiu; Zhan-Hui, Ding; Yong-Feng, Li; Bin, Yao; Zhen-Yu, Xiao; Pin-Wen, Zhu

    2016-07-01

    Not Available Supported by the National Natural Science Foundation of China under Grant Nos 10874178, 11074093, 61205038 and 11274135, the National Found for Fostering Talents of Basic Science under Grant No J1103202, the Ph.D. Programs Foundation of Ministry of Education of China under Grant No 20120061120011, the Open Project of State Key Laboratory of Superhard Materials of Jilin University, and the State Key Laboratory of Inorganic Synthesis and Preparative Chemistry of Jilin University.

  20. The foundational ontology library ROMULUS

    CSIR Research Space (South Africa)

    Khan, ZC

    2013-09-01

    Full Text Available A purpose of a foundational ontology is to solve interoperability issues among domain ontologies and they are used for ontology- driven conceptual data modelling. Multiple foundational ontologies have been developed in recent years, and most of them...

  1. Scour around Offshore Windturbine Foundations

    DEFF Research Database (Denmark)

    Larsen, Brian Juul; De Vos, Leen; Frigaard, Peter

    For the present report a testprogramme has been performed to determine the scour around offshore windturbine foundations.......For the present report a testprogramme has been performed to determine the scour around offshore windturbine foundations....

  2. Brain and Behavior Research Foundation.

    Science.gov (United States)

    ... Stress Disorder View All > Donate DONATE TODAY! > The Brain & Behavior Research Foundation is committed to alleviating the suffering caused ... and breakthroughs in scientific research. Copyright © 2016 the brain & behavior research foundation Privacy Policy Legal Notices and Disclaimers

  3. Wave Forces on Windturbine Foundations

    DEFF Research Database (Denmark)

    Larsen, Brian Juul; Frigaard, Peter

    A testprogramme has been performed to determine the wave forces on two types of foundations for an offshore windturbine. the tested foundation types are a monopile and cone. Furthermore the shaft of the cone has been tested.......A testprogramme has been performed to determine the wave forces on two types of foundations for an offshore windturbine. the tested foundation types are a monopile and cone. Furthermore the shaft of the cone has been tested....

  4. Instant Zurb Foundation 4

    CERN Document Server

    Arévalo, Jorge

    2013-01-01

    A quick and easy guide that follows a practical approach to rapidly create responsive web pages using Foundation 4 framework, following the mobile-first philosophy.If you are a web developer who wants to get the most out of your HTML5/CSS/JavaScript skills, this book is ideal for you. It is assumed that you will have some experience with these languages, but for those who don't, you can also be up and running in an instant.

  5. Web services foundations

    CERN Document Server

    Bouguettaya, Athman; Daniel, Florian

    2013-01-01

    Web services and Service-Oriented Computing (SOC) have become thriving areas of academic research, joint university/industry research projects, and novel IT products on the market. SOC is the computing paradigm that uses Web services as building blocks for the engineering of composite, distributed applications out of the reusable application logic encapsulated by Web services. Web services could be considered the best-known and most standardized technology in use today for distributed computing over the Internet.Web Services Foundations is the first installment of a two-book collection coverin

  6. Mathematical foundations of elasticity

    CERN Document Server

    Marsden, Jerrold E

    1994-01-01

    This advanced-level study approaches mathematical foundations of three-dimensional elasticity using modern differential geometry and functional analysis. It is directed to mathematicians, engineers and physicists who wish to see this classical subject in a modern setting with examples of newer mathematical contributions. Prerequisites include a solid background in advanced calculus and the basics of geometry and functional analysis.The first two chapters cover the background geometry ― developed as needed ― and use this discussion to obtain the basic results on kinematics and dynamics of con

  7. Foundations of Galois theory

    CERN Document Server

    Postnikov, MM; Stark, M; Ulam, S

    1962-01-01

    Foundations of Galois Theory is an introduction to group theory, field theory, and the basic concepts of abstract algebra. The text is divided into two parts. Part I presents the elements of Galois Theory, in which chapters are devoted to the presentation of the elements of field theory, facts from the theory of groups, and the applications of Galois Theory. Part II focuses on the development of general Galois Theory and its use in the solution of equations by radicals. Equations that are solvable by radicals; the construction of equations solvable by radicals; and the unsolvability by radica

  8. Foundations of Inference

    Directory of Open Access Journals (Sweden)

    Kevin H. Knuth

    2012-06-01

    Full Text Available We present a simple and clear foundation for finite inference that unites and significantly extends the approaches of Kolmogorov and Cox. Our approach is based on quantifying lattices of logical statements in a way that satisfies general lattice symmetries. With other applications such as measure theory in mind, our derivations assume minimal symmetries, relying on neither negation nor continuity nor differentiability. Each relevant symmetry corresponds to an axiom of quantification, and these axioms are used to derive a unique set of quantifying rules that form the familiar probability calculus. We also derive a unique quantification of divergence, entropy and information.

  9. System Reliability Analysis: Foundations.

    Science.gov (United States)

    1982-07-01

    performance formulas for systems subject to pre- ventive maintenance are given. V * ~, , 9 D -2 SYSTEM RELIABILITY ANALYSIS: FOUNDATIONS Richard E...reliability in this case is V P{s can communicate with the terminal t = h(p) Sp2(((((p p)p) p)p)gp) + p(l -p)(((pL p)p)(p 2 JLp)) + p(l -p)((p(p p...For undirected networks, the basic reference is A. Satyanarayana and Kevin Wood (1982). For directed networks, the basic reference is Avinash

  10. Foundations of Power

    DEFF Research Database (Denmark)

    Lev, Amnon

    The categories of law play an essential part in the elaboration of the concept of the modern state. From the 17th century society is perceived to be the product of the free will of its citizens, as expressed in their consent to the social contract. Contract thus becomes the conceptual foundation...... in which human freedom is translated into civil authority. The system of this translation is natural law.   The dissertation traces the genesis and the disintegration of the tradition of modern natural law in the period from the 17th to the 19th century. It shows how the format of 20th century...

  11. Minimally invasive dentistry: paradigm shifts in preparation design.

    Science.gov (United States)

    LeSage, Brian P

    2009-01-01

    While the concept of minimally invasive dentistry has long been considered a rational, viable approach to restorative care, preparation design, material science, and long-term evidentiary support have only recently begun to provide the foundation necessary to support such treatment in the everyday practice. This article reviews the fundamental paradigm shift evidenced in contemporary prosthodontics as required to facilitate the emerging interest in delivering conservative restorative alternatives.

  12. Towards stabilization of supported liquid membranes: preparation and characterization of polysulfone support and sulfonated poly (ether ether ketone) coated composite hollow fiber membranes

    NARCIS (Netherlands)

    He, T.

    2008-01-01

    A supported liquid membrane (SLM) contains organic solvent and organic extractant as one organic phase, and a porous support structure. It has been widely investigated for separation and purification of various chemical compounds. SLM has high permeability and selectivity, being regarded as one of t

  13. Problem solving in foundation engineering using foundationPro

    CERN Document Server

    Yamin, Mohammad

    2016-01-01

    This book is at once a supplement to traditional foundation engineering textbooks and an independent problem-solving learning tool. The book is written primarily for university students majoring in civil or construction engineering taking foundation analysis and design courses to encourage them to solve design problems. Its main aim is to stimulate problem solving capability and foster self-directed learning. It also explains the use of the foundationPro software, available at no cost, and includes a set of foundation engineering applications. Taking a unique approach, Dr. Yamin summarizes the general step-by-step procedure to solve various foundation engineering problems, illustrates traditional applications of these steps with longhand solutions, and presents the foundationPro solutions. The special structure of the book allows it to be used in undergraduate and graduate foundation design and analysis courses in civil and construction engineering. The book stands as valuable resource for students, faculty, ...

  14. Bio-preparates support the productivity of potato plants grown under desert farming conditions of north Sinai: Five years of field trials

    Directory of Open Access Journals (Sweden)

    Mohammed T. Abbas

    2014-01-01

    Full Text Available Organic agriculture as well as good agricultural practices (GAPs intrigues the concern of both consumers and producers of agricultural commodities. Bio-preparates of various rhizospheric microorganisms (RMOs are potential sources of biological inputs supporting plant nutrition and health. The response of open-field potatoes to the application of RMO bio-preparates, the biofertilizer “Biofertile” and the bioagent “Biocontrol”, were experimented over 5 successive years under N-hunger of north Sinai desert soils. Both vegetative and tuber yields of a number of tested cultivars were significantly improved due to rhizobacterial treatments. In the majority of cases, the biofertilizer “Biofertile” did successfully supply ca. 50% of plant N requirements, as the yield of full N-fertilized plants was comparable to those received 50% N simultaneously with bio-preparates treatment. The magnitude of inoculation was cultivar-dependent; cvs. Valor and Oceania were among the most responsive ones. Bio-preparate introduction to the plant–soil system was successful via soaking of tubers and/or spraying the plant canopy. The “Biocontrol” formulation was supportive in controlling plant pathogens and significantly increased the fruit yields. The cumulative effect of both bio-preparates resulted in tuber yield increases of ca. 25% over control.

  15. Bio-preparates support the productivity of potato plants grown under desert farming conditions of north Sinai: Five years of field trials.

    Science.gov (United States)

    Abbas, Mohammed T; Hamza, Mervat A; Youssef, Hanan H; Youssef, Gehan H; Fayez, Mohamed; Monib, Mohamed; Hegazi, Nabil A

    2014-01-01

    Organic agriculture as well as good agricultural practices (GAPs) intrigues the concern of both consumers and producers of agricultural commodities. Bio-preparates of various rhizospheric microorganisms (RMOs) are potential sources of biological inputs supporting plant nutrition and health. The response of open-field potatoes to the application of RMO bio-preparates, the biofertilizer "Biofertile" and the bioagent "Biocontrol", were experimented over 5 successive years under N-hunger of north Sinai desert soils. Both vegetative and tuber yields of a number of tested cultivars were significantly improved due to rhizobacterial treatments. In the majority of cases, the biofertilizer "Biofertile" did successfully supply ca. 50% of plant N requirements, as the yield of full N-fertilized plants was comparable to those received 50% N simultaneously with bio-preparates treatment. The magnitude of inoculation was cultivar-dependent; cvs. Valor and Oceania were among the most responsive ones. Bio-preparate introduction to the plant-soil system was successful via soaking of tubers and/or spraying the plant canopy. The "Biocontrol" formulation was supportive in controlling plant pathogens and significantly increased the fruit yields. The cumulative effect of both bio-preparates resulted in tuber yield increases of ca. 25% over control.

  16. Alport Syndrome Foundation

    Science.gov (United States)

    ... Groups Support ASF Donate Fundraising & Events Team ASF Online Shopping Annual Campaign Donors Annual Campaign for Healthy Kidneys ... Groups Support ASF Donate Fundraising & Events Team ASF Online Shopping Annual Campaign Donors Annual Campaign for Healthy Kidneys ...

  17. American Porphyria Foundation

    Science.gov (United States)

    ... Caretaker Support Forum Find an Expert Gary Eyster Art Sale Featured Items Support the APF Porphyria Research " ... 9-5-17 Woodway parkway directly across the street from the Apf office ♦ Volunteer for Research ♦ Alnylam ...

  18. Alport Syndrome Foundation

    Science.gov (United States)

    ... Groups Support ASF Donate Fundraising & Events Team ASF Online Shopping Annual Campaign Donors Annual Campaign for Healthy Kidneys ... Groups Support ASF Donate Fundraising & Events Team ASF Online Shopping Annual Campaign Donors Annual Campaign for Healthy Kidneys ...

  19. A Novel Porous Carrier Found in Nature for Nanocomposite Materials Preparation: A Case Study of Artemia Egg Shell-Supported TiO2 for Formaldehyde Removal

    Directory of Open Access Journals (Sweden)

    Sufeng Wang

    2015-01-01

    Full Text Available Artemia egg shells have an asymptotic sized pore structure (pore diameter: 500 nm–2500 nm, which could be used as a porous carrier for the preparation of nanocomposite materials. The objective of the present study was to prepare shell-supported TiO2 using a naturally porous carrier, Artemia egg shell, and to exhibit a case study of shell-supported TiO2 for formaldehyde removal. Characterization of shell-TiO2 using SEM-EDS, TEM, and XRD proved that Artemia shell with asymptotic reduction pores (pore diameter: 500 nm–2500 nm can be used as the carrier for nanocomposite materials. Artemia egg shell-supported TiO2 in polycrystalline-like nanostructures can be used for the high efficiency removal (adsorption and degradation of formaldehyde under visible light. Our results suggest that iron, one of the shell’s components, should broaden the absorption of visible light and enhance the photocatalytic efficiency of nanotitanium dioxide under visible light. Due to their interesting absorption and formaldehyde removal qualities, Artemia egg shell, as a novel naturally porous carrier for nanocomposite materials preparation, especially in the preparation of nanocatalysts, is worthy of further study.

  20. Mathematical foundations of biomechanics.

    Science.gov (United States)

    Niederer, Peter F

    2010-01-01

    The aim of biomechanics is the analysis of the structure and function of humans, animals, and plants by means of the methods of mechanics. Its foundations are in particular embedded in mathematics, physics, and informatics. Due to the inherent multidisciplinary character deriving from its aim, biomechanics has numerous connections and overlapping areas with biology, biochemistry, physiology, and pathophysiology, along with clinical medicine, so its range is enormously wide. This treatise is mainly meant to serve as an introduction and overview for readers and students who intend to acquire a basic understanding of the mathematical principles and mechanics that constitute the foundation of biomechanics; accordingly, its contents are limited to basic theoretical principles of general validity and long-range significance. Selected examples are included that are representative for the problems treated in biomechanics. Although ultimate mathematical generality is not in the foreground, an attempt is made to derive the theory from basic principles. A concise and systematic formulation is thereby intended with the aim that the reader is provided with a working knowledge. It is assumed that he or she is familiar with the principles of calculus, vector analysis, and linear algebra.

  1. Queensland Emergency Medicine Research Foundation: special report.

    Science.gov (United States)

    FitzGerald, Gerry; Codd, Catrina; Aitken, Peter; Sinnott, Michael

    2012-02-01

    Development of any new profession is dependent on the development of a special body of knowledge that is the domain of the profession. Key to this is research. Following sustained lobbying, the Queensland Government agreed to establish an emergency medicine research fund as part of an Enterprise Bargaining Agreement in 2006. That fund is managed by the Queensland Emergency Medicine Research Foundation. The present article describes the strategic approaches of the Foundation in its first 3 years, the application of research funds, and foreshadows an evaluative framework for determining the strategic value of this investment. The Foundation has developed a range of personnel and project support funding programmes, and competition for funding has increased. Ongoing evaluation will seek to determine the effectiveness of the current funding strategy on improving the effectiveness of research performance. It will also evaluate the clinical and organizational outcomes.

  2. 75 FR 70021 - Environmental Documents Prepared in Support of Oil and Gas Activities on the Alaska Outer...

    Science.gov (United States)

    2010-11-16

    ... of Oil and Gas Activities on the Alaska Outer Continental Shelf AGENCY: Bureau of Ocean Energy... (FONSI) prepared for two oil and gas activities proposed on the Alaska Outer Continental Shelf (OCS)...

  3. Reliability analysis of beams on random elastic foundations

    NARCIS (Netherlands)

    Griffiths, D.V.; Paiboon, J.; Huang, J.; Fenton, G.A.

    2012-01-01

    The classical problem of a beam on an elastic foundation has long been of practical interest to geotechnical engineers, because it provides a framework for computing deflections not only of foundations, but also of vertically oriented laterally loaded piles. The supporting soil can be modelled as an

  4. The Empirical and Moral Foundations of the ISLLC Standards

    Science.gov (United States)

    Murphy, Joseph

    2015-01-01

    Purpose: The purpose of this paper is to unpack the foundations for the national standards for school leaders in the USA. The author examines some of the background of the Standards from 1996 to 2015. The author explores the two foundations on which the ISLLC Standards rest, academic press and supportive community. Design/methodology/approach:…

  5. Bernard van Leer Foundation Annual Review 1993 = Fundacion Bernard van Leer Revista Anual 1993.

    Science.gov (United States)

    Bernard Van Leer Foundation, The Hague (Netherlands).

    This report, in both English and Spanish versions, aims to highlight the Bernard van Leer Foundation's identity, objectives, and major activities, as well as the work undertaken by the projects the foundation supports. The review features articles on the Foundation's work on advocacy, supporting families living in disadvantaged circumstances,…

  6. APPLICATION OF STEEL SHEET PILE AND COMBINED STEEL PILE INNER SUPPORT IN WIDE-SPAN DEEP FOUNDATION PIT CONSTRUCTION%钢板桩与组合钢管内支撑在大跨度深基坑施工中的应用

    Institute of Scientific and Technical Information of China (English)

    吴丽华; 曹昕

    2012-01-01

    Foundation pit of main building of Nengda Building in Nantong City of Jiangsu Province is 11.35m deep. To reduce lateral deformation of steel sheet pile, combined steel pile inner supports are set at certain positions to ensure smooth excavation of local deep foundation pit. Construction period is saved and cost is reduced, because the supports can be recycled.%江苏南通能达大厦主楼基坑深11.35 m,为减少钢板桩侧向变形,在一定位置设组合钢管内支撑,保证了局位深基坑的土方顺利开挖,缩短了工期,且支撑可周转使用,降低了成本.

  7. Fraction Sense: Foundational Understandings.

    Science.gov (United States)

    Fennell, Francis Skip; Karp, Karen

    2016-08-09

    The intent of this commentary is to identify elements of fraction sense and note how the research studies provided in this special issue, in related but somewhat different ways, validate the importance of such understandings. Proficiency with fractions serves as a prerequisite for student success in higher level mathematics, as well as serving as a gateway to many occupations and varied contexts beyond the mathematics classroom. Fraction sense is developed through instructional opportunities involving fraction equivalence and magnitude, comparing and ordering fractions, using fraction benchmarks, and computational estimation. Such foundations are then extended to operations involving fractions and decimals and applications involving proportional reasoning. These components of fraction sense are all addressed in the studies provided in this issue, with particular consideration devoted to the significant importance of the use of the number line as a central representational tool for conceptually understanding fraction magnitude.

  8. Foundations of quantum gravity

    CERN Document Server

    Lindesay, James

    2013-01-01

    Exploring how the subtleties of quantum coherence can be consistently incorporated into Einstein’s theory of gravitation, this book is ideal for researchers interested in the foundations of relativity and quantum physics. The book examines those properties of coherent gravitating systems that are most closely connected to experimental observations. Examples of consistent co-gravitating quantum systems whose overall effects upon the geometry are independent of the coherence state of each constituent are provided, and the properties of the trapping regions of non-singular black objects, black holes, and a dynamic de Sitter cosmology are discussed analytically, numerically, and diagrammatically. The extensive use of diagrams to summarise the results of the mathematics enables readers to bypass the need for a detailed understanding of the steps involved. Assuming some knowledge of quantum physics and relativity, the book provides textboxes featuring supplementary information for readers particularly interested ...

  9. The foundation of physicianship.

    Science.gov (United States)

    Fuks, Abraham; Brawer, James; Boudreau, J Donald

    2012-01-01

    Although the practice of medicine continually changes in response to new biomedical understanding, novel technologies, and evolving cultural contexts, the ethical foundations of the clinical relationship between patient and physician paradoxically remain constant. There are fundamental characteristics with respect to character, behavior, and responsibilities that are descriptive of and necessary to the role of healer and that underpin the notion of physicianship. This article discusses the underlying characteristics or virtues that are necessary to the practice of medicine from the perspectives of three different philosophic traditions: the Aristotelian idea of phronesis as developed in the work of Edmund Pellegrino; the notion of alterity as framed by Emmanuel Levinas; and the attributes necessary to healing as laid out in the kabbala.

  10. Mounting support for a photovoltaic module

    Science.gov (United States)

    Brandt, Gregory Michael; Barsun, Stephan K.; Coleman, Nathaniel T.; Zhou, Yin

    2013-03-26

    A mounting support for a photovoltaic module is described. The mounting support includes a foundation having an integrated wire-way ledge portion. A photovoltaic module support mechanism is coupled with the foundation.

  11. Just how convenient is convenience? An empirical study of the associations between perceived convenience, meal preparation activities and ready meals' characteristics

    DEFF Research Database (Denmark)

    Costa, Ana I.A.; Ruijschop, R. M. A. J.

    2006-01-01

    Parallel to considerations about settings, selection of the appropriate level of time, effort and care to be put into meal preparation is an important determinant of food choice. Nevertheless, significant relations between the time/energy consumers are willing to devote to food preparation...... in the Netherlands, with the financial support of the Portuguese Foundation for Science and Technology....

  12. Study on Physical and Chemical Behaviors of Rare Earths in Preparing Ceramic Tube Supported Palladium Film by Electroless Plating

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    The rare earths of ytterbium, lanthanum, praseodymium, neodymium and their binary mixtures were respectively added into the traditional electroless plating solution to prepare thin palladium film on the inner surface of porous ceramic tube. The experimental results shows that the addition of rare earths increases palladium deposition rates and the binary mixtures are superior to the single rare earths and the mixture of ytterbium-lanthanum is the most efficient. Adding the mixture of ytterbium-lanthanum can also reduce the plating temperature by 10~20 ℃, shrink the metal crystal size and improve the film densification compared to those by traditional electroless plating. A thin palladium film with 5 μm was prepared and the film made a highly pure hydrogen with a molar fraction of more than 99.97% from a H2-N2 gas mixture. More attentions were paid to analyze the physical and chemical behaviors of the rare earths in palladium film preparation.

  13. PREPARATION OF POLYMER—SUPPORTED RCpCpTiCl2 AND APPLICATION IN CATALYTIC ISOMERIZATION OF 1,5—HEXADIENE

    Institute of Scientific and Technical Information of China (English)

    QIANYanlong; HONGKunlun; 等

    1993-01-01

    Polymer-supported RCpCpTiCl2(Cp=η5-C5H4;RCp=η5-RC5H4)have been prepared and reduced by i-C3H7MgBr in situ,then used in catalytic isomerization of 1,5-hexadiene.The isomerization of 1,5-hexadiene leads to a mixture of cyclic and linear products.The ratio of cyclic to linear product depends on the nature of the supporter and the substituent on the cyclopentadienyl ring.The former contributes the most,for example,silica supported Cp2 TiCl2 gave cyclic-linear ratio of 99/1,while for polymer-supported Cp2TiCl2 species,linear compounds are the major products and the ratio of cyclic to linear product changes with different R groups on the cyclopentadienyl ring.

  14. Preparation and catalytic properties of ZrO2-Al2O3 composite oxide supported nickel catalysts for methane reforming with carbon dioxide

    Institute of Scientific and Technical Information of China (English)

    HAO Zheng-ping; HU Chun; JIANG Zheng; G. Q. LU

    2004-01-01

    ZrO2-Al2O3 composite oxides and supported Ni catalysts were prepared , and characterized by N2adsorption/desorption, X-ray diffraction (XRD) and X-ray photoelectron spectroscopy ( XPS ) techniques. Thecatalytic performance and carbon deposition was also investigated. This mesoporous composite oxide is shown to bea promising catalyst support. An increase in the catalytic activity and stability of methane and carbon dioxidereforming reaction was resulted from the zirconia addition, especially at 5wt% ZrO2 content. The Ni catalystsupported ZrO2-Al2O3 has a strong resistance to sintering and the carbon deposition in a relatively long-termreaction.

  15. A Model gamma-Alumina-Supported Rhenium-Platinum Catalyst Prepared from [Re2Pt(CO)12]: 1. Synthesis and Spectroscopic Characterization.

    NARCIS (Netherlands)

    Koningsberger, D.C.; Fung, A.S.; McDeVitt, M.R.; Tooley, P.A.; Kelley, M.J.; Gates, B.C.

    1993-01-01

    Catalysts supported on -Al2O3 were prepared from [Re2Pt(CO)12], and from Pt (NH3)4(NO3)2 and NH4ReO4. The former samples were characterized by infrared and X-ray photoelectron spectroscopies (XPS) and by temperature-programmed reduction (TPR); the latter were characterized by TPR. [Re2Pt(CO)12] was

  16. A Novel Way to Prepare γ-Al2O3 Supported SO42-/ZrO2 Solid Superacid Catalysts for n-Butane Isomerization

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    Highly active solid superacid catalysts for n-butane isomerization, SZ/Al2O3-P, were prepared by supporting SO42-/ZrO2 (SZ) on γ-Al2O3 carrier using a precipitation method.The activities of some catalysts were enhanced significantly.The activity of the most active sample, 60%SZ/Al2O3-P, was even about 2 times more active than that of the SZ catalyst.

  17. Synthesis and Electrochemical Evaluation of Carbon Supported Pt-Co Bimetallic Catalysts Prepared by Electroless Deposition and Modified Charge Enhanced Dry Impregnation

    OpenAIRE

    John Meynard M. Tengco; Bahareh Alsadat Tavakoli Mehrabadi; Yunya Zhang; Akkarat Wongkaew; John R. Regalbuto; Weidner, John W.; John R. Monnier

    2016-01-01

    Carbon-supported bimetallic Pt-Co cathode catalysts have been previously identified as higher activity alternatives to conventional Pt/C catalysts for fuel cells. In this work, a series of Pt-Co/C catalysts were synthesized using electroless deposition (ED) of Pt on a Co/C catalyst prepared by modified charge enhanced dry impregnation. X-ray diffraction (XRD) and scanning transmission electron microscopy (STEM) characterization of the base catalyst showed highly dispersed particles. A basic E...

  18. Children's Tumor Foundation

    Science.gov (United States)

    ... participate in a study of the effects of social media and support groups on feelings of isolation and self-esteem ... have towards the representation of the NF in social media. More > Kendra Scott Supports NF Research Oct 21, 2016, Posted in Community , ...

  19. Dynamic modeling of smart shear-deformable heterogeneous piezoelectric nanobeams resting on Winkler-Pasternak foundation

    Science.gov (United States)

    Ebrahimi, Farzad; Barati, Mohammad Reza

    2016-11-01

    Free vibration analysis is presented for a simply supported, functionally graded piezoelectric (FGP) nanobeam embedded on elastic foundation in the framework of third-order parabolic shear deformation beam theory. Effective electro-mechanical properties of FGP nanobeam are supposed to be variable throughout the thickness based on power-law model. To incorporate the small size effects into the local model, Eringen's nonlocal elasticity theory is adopted. Analytical solution is implemented to solve the size-dependent buckling analysis of FGP nanobeams based upon a higher-order shear deformation beam theory where coupled equations obtained using Hamilton's principle exist for such beams. Some numerical results for natural frequencies of the FGP nanobeams are prepared, which include the influences of elastic coefficients of foundation, electric voltage, material and geometrical parameters and mode number. This study is motivated by the absence of articles in the technical literature and provides beneficial results for accurate FGP structures design.

  20. Comparison of Foundation Systems for Wave Energy Converters Wavestar

    DEFF Research Database (Denmark)

    Vaitkunaite, Evelina; Ibsen, Lars Bo; Nielsen, Benjaminn Nordahl;

    2013-01-01

    In order to deliver cost competitive solutions, Wave Energy Converters (WEC) must be optimized in several fields, e.g. transportation, installation, structure, machinery etc. Large expenses lie on the superstructure support, i.e. the offshore foundation. Geotechnical analysis and optimization....... In such a solution horizontal wind and wave loads are dominant. Gravity based, pile and bucket foundations are universally applied solutions for the offshore structures. The suitability of these types for a WEC is analysed and commented. The foundations are designed to satisfy ultimate and serviceability limit state...... of six possible foundation solutions for WEC are presented in this article. The study is performed for WEC superstructure supported by two or four foundations. In the four-column system horizontal wind and wave loads are transformed as a pair of vertical forces, acting in tension and compression. When...

  1. Shifting liberal and conservative attitudes using moral foundations theory.

    Science.gov (United States)

    Day, Martin V; Fiske, Susan T; Downing, Emily L; Trail, Thomas E

    2014-12-01

    People's social and political opinions are grounded in their moral concerns about right and wrong. We examine whether five moral foundations--harm, fairness, ingroup, authority, and purity--can influence political attitudes of liberals and conservatives across a variety of issues. Framing issues using moral foundations may change political attitudes in at least two possible ways: (a) Entrenching: Relevant moral foundations will strengthen existing political attitudes when framing pro-attitudinal issues (e.g., conservatives exposed to a free-market economic stance) and (b) Persuasion: Mere presence of relevant moral foundations may also alter political attitudes in counter-attitudinal directions (e.g., conservatives exposed to an economic regulation stance). Studies 1 and 2 support the entrenching hypothesis. Relevant moral foundation-based frames bolstered political attitudes for conservatives (Study 1) and liberals (Study 2). Only Study 2 partially supports the persuasion hypothesis. Conservative-relevant moral frames of liberal issues increased conservatives' liberal attitudes.

  2. Effect of Preparation Methods on Al2O3 Supported CuO-CeO2-ZrO2 Catalysts for CO Oxidation

    Directory of Open Access Journals (Sweden)

    Gaurav Rattan

    2012-12-01

    Full Text Available To examine the effect of preparation methods, four catalyst samples having same composition (CuCe5.17Zr3.83Ox/g-Al2O3 (15wt% were prepared by four different methods for CO oxidation. The catalysts were prepared by co-impregnation, citric acid sol-gel, urea nitrate combustion and urea gelation co-precipitation methods, and characterized by BET, XRD, TGA/DSC and SEM. The The air oxidation of CO was carried out in a tubular fixed bed reactor under the following operating conditions: catalyst weight - 100 mg, temperature - ambient to 250 oC, pressure - atmospheric, 2.5% CO in air, total feed rate - 60 ml/min.  It was observed that the catalytic activity greatly influenced by the preparation methods. The highest activity of the catalyst prepared by the sol gel method appeared to be associated with its largest BET surface area. All the four catalysts were active for CO oxidation and did not show deactivation of catalytic activity for 50 hours of continuous runs. The ranking order of the preparation methods of the catalyst is as follows: sol-gel > co-impregnation > urea gelation > urea nitrate combustion. Copyright © 2012 by BCREC UNDIP. All rights reservedReceived: 14th June 2012, Revised: 8th September 2012, Accepted: 19th September 2012[How to Cite: G. Rattan, R. Prasad, R.C.Katyal. (2012. Effect of Preparation Methods on Al2O3 Supported CuO-CeO2-ZrO2 Catalysts for CO Oxidation. Bulletin of Chemical Reaction Engineering & Catalysis, 7(2: 112-123. doi:10.9767/bcrec.7.2.3646.112-123] [How to Link / DOI: http://dx.doi.org/10.9767/bcrec.7.2.3646.112-123 ] | View in 

  3. The logical foundations of mathematics

    CERN Document Server

    Hatcher, William S

    1981-01-01

    The Logical Foundations of Mathematics offers a study of the foundations of mathematics, stressing comparisons between and critical analyses of the major non-constructive foundational systems. The position of constructivism within the spectrum of foundational philosophies is discussed, along with the exact relationship between topos theory and set theory.Comprised of eight chapters, this book begins with an introduction to first-order logic. In particular, two complete systems of axioms and rules for the first-order predicate calculus are given, one for efficiency in proving metatheorems, and

  4. Foundations of resilience thinking.

    Science.gov (United States)

    Curtin, Charles G; Parker, Jessica P

    2014-08-01

    Through 3 broad and interconnected streams of thought, resilience thinking has influenced the science of ecology and natural resource management by generating new multidisciplinary approaches to environmental problem solving. Resilience science, adaptive management (AM), and ecological policy design (EPD) contributed to an internationally unified paradigm built around the realization that change is inevitable and that science and management must approach the world with this assumption, rather than one of stability. Resilience thinking treats actions as experiments to be learned from, rather than intellectual propositions to be defended or mistakes to be ignored. It asks what is novel and innovative and strives to capture the overall behavior of a system, rather than seeking static, precise outcomes from discrete action steps. Understanding the foundations of resilience thinking is an important building block for developing more holistic and adaptive approaches to conservation. We conducted a comprehensive review of the history of resilience thinking because resilience thinking provides a working context upon which more effective, synergistic, and systems-based conservation action can be taken in light of rapid and unpredictable change. Together, resilience science, AM, and EPD bridge the gaps between systems analysis, ecology, and resource management to provide an interdisciplinary approach to solving wicked problems.

  5. Preparation, characterization and catalytic properties of MCM-48 supported tungstophosphoric acid mesoporous materials for green synthesis of benzoic acid

    Energy Technology Data Exchange (ETDEWEB)

    Wu, Hai-Yan; Zhang, Xiao-Li; Chen, Xi; Chen, Ya; Zheng, Xiu-Cheng, E-mail: zhxch@zzu.edu.cn

    2014-03-15

    MCM-48 and tungstophosphoric acid (HPW) were prepared and applied for the synthesis of HPW/MCM-48 mesoporous materials. The characterization results showed that HPW/MCM-48 obtained retained the typical mesopore structure of MCM-48, and the textural parameters decreased with the increase loading of HPW. The catalytic oxidation results of benzyl alcohol and benzaldehyde with 30% H{sub 2}O{sub 2} indicated that HPW/MCM-48 was an efficient catalyst for the green synthesis of benzoic acid. Furthermore, 35 wt% HPW/MCM-48 sample showed the highest activity under the reaction conditions. Highlights: • 5–45 wt% HPW/MCM-48 mesoporous catalysts were prepared and characterized. • Their catalytic activities for the green synthesis of benzoic acid were investigated. • HPW/MCM-48 was approved to be an efficient catalyst. • 5 wt% HPW/MCM-48 exhibited the highest catalytic activity.

  6. Preparation of Dendritic Carbosilane-supported Palladium Catalyst and Its Catalytic Activity in Hydrogenation of Organic Compounds

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    The preparation of palladium complex from PdCl2·2H2O and earbosilane dendrimers with peripheral aminopropyl groups was described. The compound obtained was characterized by IR, 1H NMR, X-ray photoelectron spectroscopy (XPS) and inductively coupled plasma atomic emission spectrometric (ICP-AES) spectroscopy respectively. The metal complex was employed as catalyst in hydrogenation of organic compounds. The high activity of the complex was probably due to the formation of the eoordinatively unsaturated palladium.

  7. Cooperating Teachers' Role in Preparing Preservice Special Education Teachers: Moving beyond Sink or Swim

    Science.gov (United States)

    Roberts, Carly A.; Benedict, Amber E.; Thomas, Rachel A.

    2014-01-01

    Practicum experiences, a crucial component of preservice teacher preparation, help establish the foundational knowledge and skills necessary for beginning special education teachers (SETs). Preservice SETs need cooperating teachers (CTs) who support preservice SETs in proper emotional development (i.e., feeling like a teacher), who can model and…

  8. Putting the "G" Back in English: Preparing Pre-Service Teachers to Teach Grammar

    Science.gov (United States)

    Hadjioannou, Xenia; Hutchinson, Mary C.

    2010-01-01

    Classroom teachers need to have a solid foundation in understanding and applying English grammar in order to buttress their content and pedagogical content knowledge and support their students' literacy development. However, teacher preparation programs are challenged to incorporate this kind of content into the existing curriculum, which is…

  9. Antithetic Foundations of Economics

    Directory of Open Access Journals (Sweden)

    Marin Dinu

    2011-03-01

    Full Text Available This paper aims at decrypting the manner in which the foundations of Economics as a science and the meanings of the relevant explanatory formulas are being shaped. My analytical endeavor focuses on understanding the peculiarities of what is referred to as the object of study of the science known as Economics, an academic synthesis of concept-related breakthroughs regarding economicity. The explicit purpose of this analysis is to identify perennial benchmarks in economic cognition whereby this ensures its consistency. The implicit purpose is to shape a cognitive model in line with the specifics of the conceptual universe of Economics, as well as with the sources of the economic realities that are subject to a sui-generis relativism. The primary benefit of this endeavor consists in systemizing the conceptual prospects with an antithetic nature that allow for the explanations of the state of economic rationality and generate the understanding of what the source of economicity is and how it behaves. As such, the conclusions are marked by the stringent need of more precisely defining economic knowledge in order to match the changing nature of economic reality, as an expression that embraces the meeting point of two ontological vistas that are methodologically separated by some theories: human nature and human condition. Economics as a science thus features, apart from a conceptual substrate that needs to be spotted, an ontological background that needs to be revealed. The role played by this background appears to be most frequently ignored. The joint identification of both direct and contextual determinants for a sensitive area of humankind, i.e. the economy, is a direction to be followed by the royal path of rational knowledge.

  10. Excavationless Exterior Foundation Insulation Field Study

    Energy Technology Data Exchange (ETDEWEB)

    Schirber, T. [NorthernSTAR, Minneaplolis, MN (United States); Mosiman, G. [NorthernSTAR, Minneaplolis, MN (United States); Ojczyk, C. [NorthernSTAR, Minneaplolis, MN (United States)

    2014-09-01

    Building science research supports installing exterior (soil side) foundation insulation as the optimal method to enhance the hygrothermal performance of new homes. With exterior foundation insulation, water management strategies are maximized while insulating the basement space and ensuring a more even temperature at the foundation wall. However, such an approach can be very costly and disruptive when applied to an existing home, requiring deep excavation around the entire house. The NorthernSTAR Building America Partnership team implemented an innovative, minimally invasive foundation insulation upgrade technique on an existing home. The approach consisted of using hydrovac excavation technology combined with liquid insulating foam. The team was able to excavate a continuous 4 inches wide by 4 feet to 5 feet deep trench around the entire house, 128 linear feet, except for one small part under the stoop that was obstructed with concrete debris. The combination pressure washer and vacuum extraction technology also enabled the elimination of large trenches and soil stockpiles normally produced by backhoe excavation. The resulting trench was filled with liquid insulating foam, which also served as a water-control layer of the assembly. The insulation was brought above grade using a liquid foam/rigid foam hybrid system and terminated at the top of the rim joist. Cost savings over the traditional excavation process ranged from 23% to 50%. The excavationless process could result in even greater savings since replacement of building structures, exterior features, utility meters, and landscaping would be minimal or non-existent in an excavationless process.

  11. Excavationless Exterior Foundation Insulation Field Study

    Energy Technology Data Exchange (ETDEWEB)

    Schirber, T.; Mosiman, G.; Ojczyk, C.

    2014-10-01

    Building science research supports installing exterior (soil side) foundation insulation as the optimal method to enhance the hygrothermal performance of new homes. With exterior foundation insulation, water management strategies are maximized while insulating the basement space and ensuring a more even temperature at the foundation wall. However, such an approach can be very costly and disruptive when applied to an existing home, requiring deep excavation around the entire house. The NorthernSTAR Building America Partnership team implemented an innovative, minimally invasive foundation insulation upgrade technique on an existing home. The approach consisted of using hydrovac excavation technology combined with a liquid insulating foam. The team was able to excavate a continuous 4" wide by 4' to 5' deep trench around the entire house, 128 linear feet, except for one small part under the stoop that was obstructed with concrete debris. The combination pressure washer and vacuum extraction technology also enabled the elimination of large trenches and soil stockpiles normally produced by backhoe excavation. The resulting trench was filled with liquid insulating foam, which also served as a water-control layer of the assembly. The insulation was brought above grade using a liquid foam/rigid foam hybrid system and terminated at the top of the rim joist. Cost savings over the traditional excavation process ranged from 23% to 50%. The excavationless process could result in even greater savings since replacement of building structures, exterior features, utility meters, and landscaping would be minimal or non-existent in an excavationless process.

  12. Foundation Degrees: A Risky Business?

    Science.gov (United States)

    Rowley, Jennifer

    2005-01-01

    Purpose: Foundation degrees, the new proposal for sub-degree vocational education in the UK, are characterised by innovation both in their design (curriculum, teaching, learning and assessment) and in the marketplace for which they are designed. This article argues that the development and delivery of foundation degrees carry a high level of risk,…

  13. Characteristic Behavior of Bucket Foundations

    DEFF Research Database (Denmark)

    Barari, Amin

    the design of offshore wind turbine foundations. The work was divided into two main research efforts: geotechnical engineering experiments to gain insight into the behavior of offshore bucket foundations, and development of methods to improve the study of infiltration into unsaturated soils, an important...

  14. Preparation, characterization, and photocatalytic activity of La-doped TiO2 supported on activated carbon at the decomposition of methylene orange

    Science.gov (United States)

    Xing, Jun; Sun, Xiaogang; Qiu, Jingping

    2015-06-01

    A composite photocatalyst (La/TiO2/AC) has been prepared by supporting photoactive La-doped TiO2 (La/TiO2) on activated carbon (AC) via hydrolysis of tetrabutyl titanate (Ti(OC4H9)4) with La(NO3)3 · 6H2O and Ti(OC4H9)4 as precursors in the presence of activated carbon. The prepared photocatalysts were characterized by BET surface area, scanning electron microscopy (SEM), X-ray diffraction (XRD) and UV-vis absorption spectroscopy. The photocatalytic activities of the obtained photocatalysts under UV light are estimated by measuring the degradation rate of methylene orange in aqueous solution. The effect of La-doped content on the photocatalytic activity was studied and the result revealed that 0.2 mol % La/TiO2/AC exhibited highest photoactivity. In addition, the recyclability of the prepared photocatalyst was also confirmed, the photocatalytic activity of La/TiO2/AC remains about 86.5% of its activity as-prepared after being used four times. The photocatalyst therefore may be used as effective catalyst in photooxidation reactions and potentially applied for the treatment of water contaminated by organic pollutants.

  15. Development of 3-methoxy-4-benzyloxybenzyl alcohol (MBBA) resin as polymer-supported synthesis support: Preparation and benzyl ether cleavage by DDQ oxidation

    Indian Academy of Sciences (India)

    Qiang Huang; Bao-Zhong Zheng; Quan Long

    2010-03-01

    3-Methoxy-4-benzyloxybenzyl alcohol (MBBA) resin was synthesized by a two-step sequence under microwave irradiation involving the reaction of commercially available Merrifield resin with vanillin, followed by reduction with sodium borohydride. MBBA resin was treated with bromides in the presence of sodium hydride to afford the corresponding resin-bound benzyl ethers. Cleavage of the resin-bound benzyl ethers from the MBBA resin was carried out using 2,3-dichloro-5,6-dicyanobenzoqunone (DDQ) to give the corresponding alcohols in good yields. Moreover, the recovery, regeneration, and reuse of this polymer support could be achieved easily. MBBA resin can be developed as a kind of solid-phase synthesis bead of alcohols.

  16. Role of the Health Promotion Foundation in tobacco control and capacity building among healthcare professionals in Poland

    Directory of Open Access Journals (Sweden)

    Kinga Janik-Koncewicz

    2017-05-01

    Full Text Available During the first summit of world tobacco control leaders in Central and Eastern Europe, held in 1990 in Kazimierz in Poland, the inadequate engagement of medical professionals in helping people to quit smoking was identified as one of the main problems of the region. The Health Promotion Foundation was established in 1992 to co-ordinate the anti-tobacco movement in Poland and to implement the resolutions of Kazimierz. The Foundation initiated actions to introduce anti-tobacco legislation in Poland passed by the Polish Parliament in 1995. It was one of the first legislative acts in the world to recommend tobacco dependence treatment. The Foundation also took active part in the preparation of the Framework Convention on Tobacco Control, and was one of the contributing authors of Article 14. The Foundation has also engaged in competence building among healthcare providers. It has trained thousands of Polish doctors and nurses using a core, nation-wide tool: the Consensus on Diagnosis and Treatment of Tobacco Dependence. Finally, the Foundation engaged in activities to increase cessation drug availability, e.g. by conducting research, disseminating knowledge on, and promoting cytisine. Since the 1990s millions of Poles quit smoking, also thanks to the Foundation’s comprehensive activities. Further work is now focused on developing effective ways to engage greater numbers of medical doctors in the treatment of tobacco dependence and building innovative technologies supporting them and people who want to quit smoking.

  17. Static Behaviour of Bucket Foundations

    DEFF Research Database (Denmark)

    Larsen, Kim André

    . The monopod concept is investigated in this thesis, regarding the static behaviour from loads relevant to offshore wind turbines. The main issue in this concept is the rotational stiffness of the foundation and the combined capacity dominated by moments. The vertical bearing capacity of bucket foundations...... theory is proposed. The proposed expression applies to plane strain as well as axis-symmetric stress conditions for foundations with smooth or rough bases. A thorough experimental investigation of the static behaviour of bucket foundations subjected to combined loading is carried out. Laboratory tests...... as well as large-scale tests on bucket foundations subjected to low vertical load are performed during this work. Numerical simulations of the tests performed are carried out using the Mohr Coulomb material model and the commercial finite element code ABAQUS. Based on the present work, the finite element...

  18. Static Behaviour of Bucket Foundations

    DEFF Research Database (Denmark)

    Larsen, Kim André

    . The monopod concept is investigated in this thesis, regarding the static behaviour from loads relevant to offshore wind turbines. The main issue in this concept is the rotational stiffness of the foundation and the combined capacity dominated by moments. The vertical bearing capacity of bucket foundations...... theory is proposed. The proposed expression applies to plane strain as well as axis-symmetric stress conditions for foundations with smooth or rough bases. A thorough experimental investigation of the static behaviour of bucket foundations subjected to combined loading is carried out. Laboratory tests...... method is concluded to be a superior method in estimating the post peak behaviour as well as the combined capacity of bucket foundations in relation to the offshore wind turbine problem....

  19. Preparation, characterization and catalytic properties of MCM-48 supported tungstophosphoric acid mesoporous materials for green synthesis of benzoic acid

    Science.gov (United States)

    Wu, Hai-Yan; Zhang, Xiao-Li; Chen, Xi; Chen, Ya; Zheng, Xiu-Cheng

    2014-03-01

    MCM-48 and tungstophosphoric acid (HPW) were prepared and applied for the synthesis of HPW/MCM-48 mesoporous materials. The characterization results showed that HPW/MCM-48 obtained retained the typical mesopore structure of MCM-48, and the textural parameters decreased with the increase loading of HPW. The catalytic oxidation results of benzyl alcohol and benzaldehyde with 30% H2O2 indicated that HPW/MCM-48 was an efficient catalyst for the green synthesis of benzoic acid. Furthermore, 35 wt% HPW/MCM-48 sample showed the highest activity under the reaction conditions.

  20. Aqueous-Phase Preparation of Model HDS Catalysts on Planar Alumina Substrates: Support Effect on Mo Adsorption and Sulfidation.

    Science.gov (United States)

    Bara, Cédric; Plais, Lucie; Larmier, Kim; Devers, Elodie; Digne, Mathieu; Lamic-Humblot, Anne-Félicie; Pirngruber, Gerhard D; Carrier, Xavier

    2015-12-23

    The role of the oxide support on the structure of the MoS2 active phase (size, morphology, orientation, sulfidation ratio, etc.) remains an open question in hydrotreating catalysis and biomass processing with important industrial implications for the design of improved catalytic formulations. The present work builds on an aqueous-phase surface-science approach using four well-defined α-alumina single crystal surfaces (C (0001), A (112̅0), M (101̅0), and R (11̅02) planes) as surrogates for γ-alumina (the industrial support) in order to discriminate the specific role of individual support facets. The reactivity of the various surface orientations toward molybdenum adsorption is controlled by the speciation of surface hydroxyls that determines the surface charge at the oxide/water interface. The C (0001) plane is inert, and the R (11̅02) plane has a limited Mo adsorption capacity while the A (112̅0) and M (101̅0) surfaces are highly reactive. Sulfidation of model catalysts reveals the highest sulfidation degree for the A (112̅0) and M (101̅0) planes suggesting weak metal/support interactions. Conversely, a low sulfidation rate and shorter MoS2 slabs are found for the R (11̅02) plane implying stronger Mo-O-Al bonds. These limiting cases are reminiscent of type I/type II MoS2 nanostructures. Structural analogies between α- and γ- alumina surfaces allow us to bridge the material gap with real Al2O3-supported catalysts. Hence, it can be proposed that Mo distribution and sulfidation rate are heterogeneous and surface-dependent on industrial γ-Al2O3-supported high-surface-area catalysts. These results demonstrate that a proper control of the γ-alumina morphology is a strategic lever for a molecular-scale design of hydrotreating catalysts.

  1. Catalytic membranes prepared using layer-by-layer adsorption of polyelectrolyte/metal nanoparticle films in porous supports.

    Science.gov (United States)

    Dotzauer, David M; Dai, Jinhua; Sun, Lei; Bruening, Merlin L

    2006-10-01

    Layer-by-layer adsorption of polyelectrolytes and gold nanoparticles within porous supports provides a convenient method for forming catalytic membranes. The polyelectrolyte film effectively immobilizes the gold nanoparticles without inhibiting access to catalytic sites, as shown by the similar rate constants for nanoparticle-catalyzed 4-nitrophenol reduction in solution and in membranes. Modified alumina membranes reduce >99% of 0.4 mM 4-nitrophenol at linear flow rates of 0.98 cm/s, and the modification process is also applicable to track-etched polycarbonate supports.

  2. A facile method for the preparation of Covalent Triazine Framework coated monoliths as catalyst support - applications in C1 catalysis

    KAUST Repository

    Bavykina, Anastasiya V.

    2017-07-17

    A quasi Chemical Vapour Deposition method for the manufacturing of well-defined Covalent Triazine Framework (CTF) coatings on cordierite monoliths is reported. The resulting supported porous organic polymer is an excellent support for the immobilisation of two different homogeneous catalysts: 1) an IrIIICp*-based catalyst for the hydrogen production from formic acid, and 2) a PtII-based for the direct activation of methane via Periana chemistry. The immobilised catalysts display a much higher activity in comparison with the unsupported CTF operated in slurry because of improved mass transport. Our results demonstrate that CTF based catalysts can be further optimised by engineering at different length-scales.

  3. Preparation of Pd supported on La(Sr)-Mn-O Perovskite by microwave Irradiation Method and Its Catalytic Performances for the Methane Combustion

    Science.gov (United States)

    Wang, Wei; Yuan, Fulong; Niu, Xiaoyu; Zhu, Yujun

    2016-01-01

    In this work, a series of palladium supported on the La0.8Sr0.2MnO3.15 perovskite catalysts (Pd/LSM-x) with different Pd loading were prepared by microwave irradiation processing plus incipient wetness impregnation method and characterized by XRD, TEM, H2-TPR and XPS. These catalysts were evaluated on the lean CH4 combustion. The results show that the Pd/LSM-x samples prepared by microwave irradiation processing possess relative higher surface areas than LSM catalyst. The addition of Pd to the LSM leads to the increase in the oxygen vacancy content and the enhancement in the mobility of lattice oxygen which play an important role on the methane combustion. The Pd/LSM-3 catalysts with 4.2wt% Pd loading exhibited the best performance for CH4 combustion that temperature for 10% and 90% of CH4 conversion is 315 and 520 °C.

  4. Preparation of Pd supported on La(Sr)-Mn-O Perovskite by microwave Irradiation Method and Its Catalytic Performances for the Methane Combustion.

    Science.gov (United States)

    Wang, Wei; Yuan, Fulong; Niu, Xiaoyu; Zhu, Yujun

    2016-01-19

    In this work, a series of palladium supported on the La0.8Sr0.2MnO3.15 perovskite catalysts (Pd/LSM-x) with different Pd loading were prepared by microwave irradiation processing plus incipient wetness impregnation method and characterized by XRD, TEM, H2-TPR and XPS. These catalysts were evaluated on the lean CH4 combustion. The results show that the Pd/LSM-x samples prepared by microwave irradiation processing possess relative higher surface areas than LSM catalyst. The addition of Pd to the LSM leads to the increase in the oxygen vacancy content and the enhancement in the mobility of lattice oxygen which play an important role on the methane combustion. The Pd/LSM-3 catalysts with 4.2wt% Pd loading exhibited the best performance for CH4 combustion that temperature for 10% and 90% of CH4 conversion is 315 and 520 °C.

  5. Ruthenium oxide/carbon composites with microporous or mesoporous carbon as support and prepared by two procedures. A comparative study as supercapacitor electrodes

    Energy Technology Data Exchange (ETDEWEB)

    Pico, F. [Instituto de Ciencia de Materiales de Madrid (ICMM), Consejo Superior de Investigaciones Cientificas (CSIC), Sor Juana Ines de la Cruz 3, Cantoblanco, E-28049-Madrid (Spain); Morales, E. [Instituto de Ciencia y Tecnologia de Polimeros (ICTP), CSIC, Juan de la Cierva 3, E-28006-Madrid (Spain); Fernandez, J.A.; Centeno, T.A. [Instituto Nacional del Carbon (INCAR), CSIC, Francisco Pintado Fe 26, E-33011-Oviedo (Spain); Ibanez, J. [Centro Nacional de Investigaciones Metalurgicas (CENIM), CSIC, Avda. Gregorio del Amo 8, E-28040-Madrid (Spain); Rojas, R.M.; Amarilla, J.M. [Instituto de Ciencia de Materiales de Madrid (ICMM), Consejo Superior de Investigaciones Cientificas (CSIC), Sor Juana Ines de la Cruz 3, Cantoblanco, E-28049-Madrid (Spain); Rojo, J.M. [Instituto de Ciencia de Materiales de Madrid (ICMM), Consejo Superior de Investigaciones Cientificas (CSIC), Sor Juana Ines de la Cruz 3, Cantoblanco, E-28049-Madrid (Spain)], E-mail: jmrojo@icmm.csic.es

    2009-03-01

    Composites are prepared by deposition of nanoparticles of RuO{sub 2}.xH{sub 2}O (1-4 nm) on two carbons: microporous carbon (1.3 nm of average micropore size) and mesoporous carbon (11 nm of average mesopore size). Two-preparation procedures are used: (i) procedure A consisting of repetitive impregnations of the carbons with RuCl{sub 3}.0.5H{sub 2}O solutions, and (ii) procedure B based on impregnation of the carbons with Ru(acac){sub 3} vapour. The procedure B leads to supported RuO{sub 2}.xH{sub 2}O particles that appear more crystalline than those obtained by the procedure A. Specific capacitance and specific surface area of the composites are discussed as functions of the RuO{sub 2} content, and different dependences for the composites derived from the two carbons are found. Mesoporous carbon is better support than microporous carbon. Procedure A leads to supported RuO{sub 2}.xH{sub 2}O particles with higher specific capacitance than the particles deposited by procedure B.

  6. Ni/Carbon Hybrid Prepared by Hydrothermal Carbonization and Thermal Treatment as Support for PtRu Nanoparticles for Direct Methanol Fuel Cell

    Institute of Scientific and Technical Information of China (English)

    Marcelo Marques Tusi; Michele Brandalise; Nataly Soares de Oliveira Polanco; Olandir Vercino Correa; Antonio Carlos da Silva; Juan Carlo Villalba; Fauze Jaco Anaissi

    2013-01-01

    Ni/Carbon was prepared in two steps:initially cellulose as carbon source and NiCl2.6H20 as catalyst of the carbonization process were submitted to hydrothermal treatment at 200 ℃ and further to thermal treatment at 900 ℃ under argon atmosphere.The obtained material contains Ni nanoparticles with face-centered cubic (fcc) structure dispersed on amorphous carbon with graphitic domains.PtRu/C electrocatalysts (carbonsupported PtRu nanoparticles) were prepared by an alcohol-reduction process using Ni/Carbon as support.The materials were characterized by thermogravimetric analysis,energy-dispersive X-ray spectroscopy,Fourier transform infrared spectroscopy,X-ray diffraction,transmission electron microscopy and tested as anodes in single direct methanol fuel cell (DMFC).The performances of PtRu/C electrocatalysts using Ni/Carbon as support were superior to those obtained for PtRu/C using commercial carbon black Vulcan XC72 as support.

  7. Preparation and Methanol Decomposition Activity of Ruthenium Supported Ce-Doped Mesoporous TiO2 Oxide

    Institute of Scientific and Technical Information of China (English)

    Zhang Xuehong; Luo Laitao; Duan Zhanhui

    2005-01-01

    Mesoporous TiO2-CeO2 mixed oxide(m-TiO2-CeO2) were synthesized using n-cetylpyridinium chloride (C16PyCl) as a structure-directing agent under the neutral conditions and room temperature. The synthesized mesoporous samples were characterized by FT-IR, XRD, and N2 adsorption BET methods. The incorporation of Ce3+ ions into the channel wall improves the stability of the mesoporous structure obviously. After ruthenium being loaded by the impregnating method, the Ru particle strongly interacts with the mesoporous mixed supports. Although a part of the particles are possible to block the support pores, the catalytic activity of ruthenium supported on the m-TiO2-CeO2 for methanol decomposition to carbon monoxide and hydrogen is significantly higher than that of ruthenium supported on m-TiO2. A synergistic effect between CeO2 and TiO2 was observed for promoting the catalytic properties of Ru.

  8. Waste-to-resource preparation of a porous ceramic membrane support featuring elongated mullite whiskers with enhanced porosity and permeance

    NARCIS (Netherlands)

    Zhu, Li; Dong, Yingchao; Hampshire, Stuart; Cerneaux, Sophie; Winnubst, Aloysius J.A.

    2015-01-01

    Different from traditional particle packing structure, a porous structure of ceramic membrane support was fabricated, featuring elongated mullitewhiskers with enhanced porosity, permeance and sufficient mechanical strength. The effect of additives (MoO3and AlF3) and sintering procedureon open porosi

  9. Preparation, Clinical Support, and Confidence of Speech-Language Therapists Managing Clients with a Tracheostomy in the UK

    Science.gov (United States)

    Ward, Elizabeth; Morgan, Tessa; McGowan, Sue; Spurgin, Ann-Louise; Solley, Maura

    2012-01-01

    Background: Literature regarding the education, training, clinical support and confidence of speech-language therapists (SLTs) working with patients with a tracheostomy is limited; however, it suggests that many clinicians have reduced clinical confidence when managing this complex population, many face role and team challenges practising in this…

  10. Psychological Foundations of Language

    Institute of Scientific and Technical Information of China (English)

    王敏

    2016-01-01

    语言在我们的进化史中只是新近才出现的一种现象,而导致这惊人发展的力量是什么尚不清楚。我们知道部分原因是特化于语言功能的脑结构的演变。语言行为,和所有的行为一样,要通过脑结构的作用,但因为语言极其微妙并涉及多个方面,所以要在大脑中有一个特别复杂的表征。我们会看到,我们语言能力的各个方面,不是纯粹的抽象物,而是在闹中有独立的,能具体说明的表征。另外,语言的心理学基础研究会扩展我们对语言理解,语言产生和语言习得的讨论。这篇文章首先对语言的心理学基础做了一个简单的介绍使我们对为什么要做这个研究有一个清晰的观点。然后讨论了大脑机制和语言。不同的语言技能涉及脑的不同部位,遭受脑受伤的个体常常只是在语言的某些方面表现缺陷。接着描述了语言进程的侧化,对脑裂病人和正常人的研究表明,对大部分人来说,脑的左半球控制语言,特别是句法过程和语言产生,而右半球则是语用方面和语言理解。最后,对关于大脑的智力,性别和遗传因素和语言的关系做了简要的描述。%The emergence of language occurred only recently in our evolutionary history,and the set of forces that led to this extraordinary de-velopment is not yet clear.We do know that part of the story concerns the evolution of brain mechanisms specialized for language functions.Lan-guage behavior,like all behavior,is mediated by brain structures,but because language is extremely subtle and multifaceted,it has a particularly complex representation in the brain.We will learn that various aspects of our language capacity are not mere abstractions but rather have separate and specifiable representations in the brain.Moreover,the study of the psychological foundations of language extends our discussion of language comprehension,production and

  11. George Mikenberg honoured by the Sharing Knowledge Foundation

    CERN Multimedia

    CERN Bulletin

    2016-01-01

    The Sharing Knowledge Foundation Prize was presented to the ATLAS physicist at a ceremony on 18 March.   ATLAS physicist George Mikenberg receives the Sharing Knowledge Foundation Prize. From left to right: Peter Jenni, former ATLAS Spokesperson, Rolf Heuer, former CERN Director-General, Frédérick Bordry, CERN Director for Accelerators and Technology, George Mikenberg, Patrick Fassnacht, CERN International Relations sector, Eliane Jacot-Des-Combes Mikenberg, Herwig Schopper, former CERN Director-General, Constantin Lanaras, treasurer of the Sharing Knowledge Foundation, Robert Klapisch, President of the Sharing Knowledge Foundation, Federico Saldana, logistical support, Catherine Cesarsky, Vice-President of the CERN Council, Eliezer Rabinovici, Vice-President of the CERN Council and of SESAME. (Image: Sophia Bennett/CERN) The Sharing Knowledge Foundation awarded its 2016 prize to George Mikenberg, a member of the LHC's ATLAS experiment who has been...

  12. A way to inhibit SO[sub 2] poisoning of SCR catalysts by fine tuning of the composition and the preparation method of the support

    Energy Technology Data Exchange (ETDEWEB)

    Matralis, H.; Fiasse, S.; Bastians, Ph.; Ruwet, M.; Grange, P.; Delmon, B. (Unite de Catalyse et Chimie des Materiaux Divise, Louvain-la-Neuve (Belgium)); Castillo, R. (Monomeros Colombo Venezolanos (EMA), Las Flores Barranquilla (Colombia))

    1993-05-26

    Two series of mixed SiO[sub 2]-TiO[sub 2] and Al[sub 2]O[sub 3]-TiO[sub 2] supports were prepared by the following methods: precipitation from TiCl[sub 4] solution with aqueous ammonia, impregnation with titanium isopropoxide solution in isopropanol, and grafting by reaction of TiCl[sub 4] with the hydroxyl groups of the main carrier (SiO[sub 2] or Al[sub 2]O[sub 3]). The vanadia catalysts, resulting from the impregnation of these mixed supports with an aqueous solution of vanadium oxalate, were tested in the selective catalytic reduction-(SCR) of NO with NH[sub 3] in the presence of O[sub 2]. BET, XRD and XPS were used to characterise the samples. All these catalysts were less active than a standard TiO[sub 2]-V[sub 2]O[sub 5] catalyst when tested with a SO[sub 2]-free feed. However, in the presence of 4000 ppm SO[sub 2] in the feed they were more resistant and more active than the TiO[sub 2]-V[sub 2]O[sub 5] catalyst. Our results indicate that the dispersion of TiO[sub 2] on the main carrier is a key factor for preparing a performant SCR-catalyst. The grafting and impregnation methods for the Al[sub 2]O[sub 3]-TiO[sub 2] and the impregnation for the SiO[sub 2]-TiO[sub 2] supports were found to be the most effective preparation techniques for dispersing TiO[sub 2], and for giving the most performant and resistant, towards SO[sub 2] poisoning, catalysts.

  13. 复杂地质条件下基于变形控制的深基坑支护设计与施工优化%The Design and Construction Optimization of Deep Foundation Excavation Support on Basis of Deformation Control in Complex Geology Condition

    Institute of Scientific and Technical Information of China (English)

    孙晓阳; 周军红

    2012-01-01

    结合泰州万达广场工程实例,对以变形控制为主的基坑所采用的桩-锚支护方案设计、过程优化及施工监测进行了阐述.详细介绍了优化的原理、内容及高压喷射扩大头预应力桩锚技术在粉土、粉砂等易产生流砂、管涌的深基坑施工中应用,并通过严格过程控制,较好控制了基坑的变形,取得了良好的社会效益和经济效益.%Based on the Taizhou Wanda Square, the authors expound the proposal, process optimization and construction monitoring of pile-anchor support which is adopted by foundation excavation on basis of deformation control. They introduce the optimization principle, content and the application of technology of high pressure sprays expansion head of prestressed anchor pile with silt, sandy silt, piping in deep foundation excavation in detail. The deformations of foundation excavation are well controlled by the strict process control, and the application of the technology achieves good social and economic benefits.

  14. Water- and organo-dispersible gold nanoparticles supported by using ammonium salts of hyperbranched polystyrene: preparation and catalysis.

    Science.gov (United States)

    Gao, Lei; Nishikata, Takashi; Kojima, Keisuke; Chikama, Katsumi; Nagashima, Hideo

    2013-12-01

    Gold nanoparticles (1 nm in size) stabilized by ammonium salts of hyperbranched polystyrene are prepared. Selection of the R groups provides access to both water- and organo-dispersible gold nanoparticles. The resulting gold nanoparticles are subjected to studies on catalysis in solution, which include reduction of 4-nitrophenol with sodium borohydride, aerobic oxidation of alcohols, and homocoupling of phenylboronic acid. In the reduction of 4-nitrophenol, the catalytic activity is clearly dependent on the size of the gold nanoparticles. For the aerobic oxidation of alcohols, two types of biphasic oxidation are achieved: one is the catalyst dispersing in the aqueous phase, whereas the other is in the organic phase. The catalysts are reusable more than four times without loss of the catalytic activity. Selective synthesis of biphenyl is achieved by the homocoupling of phenylboronic acid catalyzed by organo-dispersible gold nanoparticles.

  15. Preparation and Characterization of Zirconia-Coated Nanodiamonds as a Pt Catalyst Support for Methanol Electro-Oxidation

    Directory of Open Access Journals (Sweden)

    Jing Lu

    2016-12-01

    Full Text Available Zirconia-coated nanodiamond (ZrO2/ND electrode material was successfully prepared by one-step isothermal hydrolyzing from ND-dispersed ZrOCl2·8H2O aqueous solution. High-resolution transmission electron microscopy reveals that a highly conformal and uniform ZrO2 shell was deposited on NDs by this simple method. The coating obtained at 90 °C without further calcination was mainly composed of monoclinic nanocrystalline ZrO2 rather than common amorphous Zr(OH4 clusters. The ZrO2/NDs and pristine ND powder were decorated with platinum (Pt nanoparticles by electrodeposition from 5 mM chloroplatinic acid solution. The electrochemical studies indicate that Pt/ZrO2/ND catalysts have higher electrocatalytic activity and better stability for methanol oxidation than Pt/ND catalysts in acid.

  16. Membrane-supported sample preparation for chemical analysis in fluid flow systems; Membrangestuetzte Probenvorbereitung zur chemischen Analyse in Fliesssystemen

    Energy Technology Data Exchange (ETDEWEB)

    Kiesow, T.; Frenzel, W. [TU-Berlin, Fachgebiet Luftreinhaltung im Inst. fuer Technischen Umweltschutz, Berlin (Germany)

    2003-07-01

    Membrane-supported separation processes are described in detail, i.e. gas diffusion, dialysis and liquid membrane extraction in fluid flow systems. The focus is on gas diffusion and on the analysis of ammonium and short-chain amines. (orig.) [German] Im folgendem werden die membrangestuetzten Trennverfahren Gasdiffusion, Dialyse und Fluessigmembranextraktion im Fliesssystem naeher beschrieben. Dabei soll im besonderen auf die Gasdiffusion mit einem Bestimmungsverfahren fuer Ammonium und kurzkettige Amine eingegangen werden. (orig.)

  17. Crumpled rGO-supported Pt-Ir bifunctional catalyst prepared by spray pyrolysis for unitized regenerative fuel cells

    Science.gov (United States)

    Kim, In Gyeom; Nah, In Wook; Oh, In-Hwan; Park, Sehkyu

    2017-10-01

    Three-dimensional (3D) crumpled reduced graphene oxide supported Pt-Ir alloys that served as bifunctional oxygen catalysts for use in untized regenerative fuel cells were synthesized by a facile spray pyrolysis method. Pt-Ir catalysts supported on rGO (Pt-Ir/rGOs) were physically characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and thermogravimetric analysis (TGA) to observe change in composition by heat treatment, alloying, and morphological transition of the catalysts. Their catalytic activities and stabilities for the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) conditions were electrochemically investigated using cyclic voltammetry (CV), linear sweep voltammetry (LSV), potential cycling and hold tests on the rotating disk electrode (RDE). Pt-Ir/rGO with no post heat-treatment (Pt-Ir/rGO_NP) showed a lower activity for ORR and OER although metal nanoparticles decorated on the support are relatively small. However, Pt-Ir/rGO showed remarkably enhanced activity following heat treatment, depending on temperature. Pt-Ir/rGO heat-treated at 600 °C after spray pyrolysis (Pt-Ir/rGO_P600) exhibited a higher activity and stability than a commercially available Pt/C catalyst kept under the ORR condition, and it also revealed a comparable OER activity and durability versus the commercial unsupported Ir catalyst.

  18. Polish Foundation for Energy Efficiency

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-12-31

    The Polish Foundation for Energy Efficiency (FEWE) was established in Poland at the end of 1990. FEWE, as an independent and non-profit organization, has the following objectives: to strive towards an energy efficient national economy, and to show the way and methods by use of which energy efficiency can be increased. The activity of the Foundation covers the entire territory of Poland through three regional centers: in Warsaw, Katowice and Cracow. FEWE employs well-known and experienced specialists within thermal and power engineering, civil engineering, economy and applied sciences. The organizer of the Foundation has been Battelle Memorial Institute - Pacific Northwest Laboratories from the USA.

  19. Component Representation for Shock Qualified Foundation Structure

    Directory of Open Access Journals (Sweden)

    Timothy Coats

    2003-01-01

    Full Text Available Navy ship foundations are typically designed for shock using the Navy's Dynamic Design Analysis Method. The NAVSEA 0908-LP-000-3010, Rev. 1 manual states that a component modeled as a lumped mass with rigid links should not provide constraint to the support structure. This ensures foundations are designed to withstand all shock loads without accounting for additional stiffness provided by the component. Investigations are provided herein to illustrate the trade-offs and consequences of several approaches for component representations. The observations reinforce the notion that one must give careful consideration for the system being modeled, the expected modal characteristics, and compliance with NAVSEA 0908-LP-000-3010, Rev. 1.

  20. 多孔陶瓷分离膜支撑体的制备%Preparation of Porous Ceramic Separation Membrane Supports

    Institute of Scientific and Technical Information of China (English)

    刘亚会; 汪建根

    2012-01-01

    采用氧化铝为主要原料制备出多孔陶瓷分离膜支撑体,对原料粉体做了TG/DSC曲线分析.研究了支撑体的烧结温度对收缩率的影响;烧结温度、保温时间和原料粉体粒径对孔结构、孔径的影响;造孔剂用量对孔隙率的影响.结果表明:在烧结温度1 200℃,保温时间4h,造孔剂用量(即造孔剂质量占原料总质量的百分数,下同)大于20%的条件下,制备出孔径分布均匀,孔隙率大于50%,符合透水要求的多孔陶瓷分离膜支撑体.%Porous ceramic separation membrane supports are prepared using alumina fine as the main raw materials, and the TG/DSC curves of the powder of raw materials are analyzed. The effect of the supports' sintering temperature on the shrinkage rate is studied. The effects of different sintering temperature, holding time and materials powder particle size on pore structure and size of the supports are also studied. The effect of the pore former dosage on porosity is also within the scope of study. The results show that porous ceramics separation membrane supports of uniform pore size distribution and with porosity more than 50% and pervious to water can be prepared under the following optimum conditions:sintering temperature being 1 200 ℃, holding time being 4 h, and porous agent being more than 20%.

  1. Virtuous capital: what foundations can learn from venture capitalists.

    Science.gov (United States)

    Letts, C W; Ryan, W; Grossman, A

    1997-01-01

    U.S. foundations and nonprofits work diligently on behalf of society's most needy and yet report that progress is slow and social problems persist. How can they learn to be more effective with their limited resources? Foundations should consider expanding their mission from investing only in program innovation to investing in the organizational needs of nonprofit organizations as well. Their overemphasis on program design has meant deteriorating organizational capacity at many nonprofits. If foundations are to help nonprofits be assured of making payroll, paying the rent, or buying a much-needed computer, they must develop hands-on partnering skills. Venture capital firms offer a helpful benchmark. In addition to putting up capital, they closely monitor the companies in which they have invested, provide management support and stay involved long enough to see the company become strong. If foundation officers familiarize themselves with such practices, they can begin to build organizational capacity in the nonprofit sector. Foundations can hire organizational experts to assist grantees; they can lengthen grant terms to allow nonprofits to build up organization strengths; and they can create new classes of grants that allow for organizational effectiveness. Nonprofits in turn should articulate their organizational needs when applying for grants; they should apply to foundations known for longer-term grants; and they should create plans that justify long-term support from foundations.

  2. High pressure organic colloid method for the preparation of high performance carbon nanotube-supported Pt and PtRu catalysts for fuel cell applications

    Institute of Scientific and Technical Information of China (English)

    WANG; KateNing; Viola; BIRSS

    2010-01-01

    Highly dispersed,high performance Pt and PtRu catalysts,supported on multiwalled carbon nanotubes(CNTs),were prepared by a high pressure organic colloid method.The particle sizes of the active components were as small as 1.2 nm for Pt and 1.1 nm for PtRu,and the active Pt surface areas were 295 and 395 m2/g,respectively.The catalysts showed very high activities toward the anodic oxidation of methanol,evaluated by cyclic voltammetry,being up to 4 times higher than that of commercial Johnson Matthey Hispec 2000 Pt/XC-72R and 5 times better than Hispec 5000 PtRu/XC-72R catalysts.In a full air/hydrogen fuel cell,a membrane-electrode assembly prepared using our Pt/CNT and PtRu/CNT catalysts showed 50% and 100% higher performances than those prepared with commercial Johnson Matthey Pt/XC-72R and PtRu/XC-72R catalysts for the same Pt loading and operating conditions.

  3. About The Rural Development Foundation

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    <正>The Rural Development Foundation (RDF) ,founded in 1996,is an Indian nonprofit organization with the mission of providing quality education for underprivileged rural children. RDF founded and continues to operate five schools and one junior college in Andhra

  4. About The Rural Development Foundation

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>The Rural Development Foundation ( RDF) ,founded in 1996,is an Indian nonprofit organization with the mission of providin gquality education for underprivileged rural children. RDF founded and continues to operate five schools and one junior college in

  5. About The Rural Development Foundation

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    <正>The Rural Development Foundation ( RDF) ,founded in 1996,is an Indian nonprofit organization with the mission of providing quality education for underprivileged rural children. RDF founded and continues to operate five schools

  6. About The Rural Development Foundation

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>The Rural Development Foundation ( RDF) ,founded in 1996,is an Indian nonprofit organization with the mission of providing quality education for underprivileged rural children. RDF founded and continues to operate five schools and one junior college in

  7. About The Rural Development Foundation

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    <正>The Rural Development Foundation(RDF),founded in1996,is an Indian nonprofit organization with the mission of providingquality education for underprivileged rural children.RDF founded and continues to operate five schools and one junior college in

  8. Crohn's & Colitis Foundation of America

    Science.gov (United States)

    ... enabled to enjoy the full interactive experience. Crohn's & Colitis Foundation of America Find a Doctor Find a ... Local Chapters News Events Search: What are Crohn's & Colitis? What is Crohn's Disease What is Ulcerative Colitis ...

  9. Kaiser Family Foundation - Content Search

    Data.gov (United States)

    U.S. Department of Health & Human Services — Chartpacks, chartbooks, factsheets, reports, and slide presentations bring Kaiser Family Foundation information to life, and can be easily incorporated into your...

  10. Foundation for Film and Science

    Science.gov (United States)

    van der Veen, G.

    1976-01-01

    Provides a comprehensive discussion on the Stichting Film en Wetenschap, SFW (Foundation for Film and Science), in Utrecht. Various aspects of the use of audio-visual aids in university teaching are looked at in detail. (Editor/RK)

  11. Experimental Research of Engine Foundations

    Directory of Open Access Journals (Sweden)

    Violeta-Elena Chiţan

    2004-01-01

    Full Text Available This paper tries a compact presentation of experimental research of engine-foundations. The dynamic phenomena are so complex, that the vibrations cannot be estimated in the design stage. The design engineer of an engine foundation must foresee through a dynamic analysis of the vibrations, those measures that lead to the avoidance or limiting of the bad effects caused by the vibrations.

  12. Foundations of genetic algorithms 1991

    CERN Document Server

    1991-01-01

    Foundations of Genetic Algorithms 1991 (FOGA 1) discusses the theoretical foundations of genetic algorithms (GA) and classifier systems.This book compiles research papers on selection and convergence, coding and representation, problem hardness, deception, classifier system design, variation and recombination, parallelization, and population divergence. Other topics include the non-uniform Walsh-schema transform; spurious correlations and premature convergence in genetic algorithms; and variable default hierarchy separation in a classifier system. The grammar-based genetic algorithm; condition

  13. Physical Foundations of Cosmology

    Energy Technology Data Exchange (ETDEWEB)

    Stewart, J M [University of Cambridge (United Kingdom)

    2006-02-07

    In 1952, Mme Yvonne Choquet-Bruhat published a major paper, Theoreme d'existence pour certains systemes d'equations aux derivees partielles non lineaires (Acta Math. 88 141-225), which laid the foundation for modern studies of the Cauchy problem in general relativity. The fiftieth anniversary of this event was celebrated with an eponymous Cargese Summer School in 2002. The proceedings of that summer school are summarized electronically (as audio, video, transparencies and lecture notes, where available) on a DVD archive included with this volume, and are also available on the internet. However the organizers decided that a separate volume describing the 'state of the art in mathematical general relativity' would be useful, and this book is the result. It includes some material not covered in the school and excludes some school material which has been covered adequately elsewhere. About one fifth of the book is devoted to a survey of Smoothness at Null Infinity and the Structure of Initial Data by Helmut Friedrich. This is a modern study of gravitational radiation, and the analysis of Einstein's equations. It is extremely helpful to survey all of this material, including some of the latest developments, using a consistent notation. This article is strongly recommended to anyone hoping to gain a foothold in this area. Lars Andersson has surveyed, in The Global Existence Problem in General Relativity, some results and conjectures about the global properties of 3+1-dimensional spacetimes with a compact Cauchy surface. Again it is very useful to have essentially all of the known results presented in a consistent notation. This material is not on the DVD. Yvonne Choquet-Bruhat has contributed a long research paper, Future Complete U(1) Symmetric Einsteinian Spacetimes, the Unpolarized Case. There is a non-linear stability theorem due to her and Vincent Moncrief in which spacetime is of the form M x R where M is a circle bundle over a compact

  14. Preparation of IrO2 nanoparticles with SBA-15 template and its supported Pt nanocomposite as bifunctional oxygen catalyst

    Science.gov (United States)

    Kong, Fan-Dong; Liu, Jing; Ling, Ai-Xia; Xu, Zhi-Qiang; Wang, Hui-Yun; Kong, Qing-Sheng

    2015-12-01

    In the present work, we report the syntheses of IrO2 nanoparticles with SBA-15 template (s-IrO2), and s-IrO2 supported Pt nanocomposite (Pt/s-IrO2) as bifunctional oxygen catalyst. Physical characterizations including X-ray diffraction and transmission electron microscopy demonstrate that s-IrO2 catalyst has excellent uniformity and regularity in particle shape and much ordered distribution in geometric space, and Pt/s-IrO2 catalyst shows a uniform Pt dispersion on the surface of the s-IrO2 particles. Electrochemical analyses prove that s-IrO2 catalyst possesses superior OER activity at operating potentials; and that Pt/s-IrO2 catalyst, in comparison to Pt/commercial IrO2, has higher ESA value and ORR catalytic performance with a mechanism of four-electron pathway and a high ORR efficiency. And as a bifunctional oxygen catalyst, Pt/s-IrO2 also exhibits more remarkable OER performance than the commercial one. The s-IrO2 nanoparticles will be a promising active component (for OER), and suitable for Pt support (for ORR).

  15. Preparation and characterizations of highly dispersed carbon supported PdxPty/C catalysts by a modified citrate reduction method for formic acid electrooxidation

    Science.gov (United States)

    Li, Zuopeng; Li, Muwu; Han, Mingjia; Zeng, Jianhuang; Li, Yuexia; Guo, Yanqin; Liao, Shijun

    2014-05-01

    Carbon supported PdxPty/C (atomic ratio x:y from 1:1 to 6:1) have been prepared by a modified citrate reduction method assisted by inorganic stabilizers. Without using high molecular capping agents as stabilizers, the PdxPty/C catalysts are highly dispersed on the carbon support and no particle aggregations are found for the PdxPty/C catalysts. X-ray photoelectron spectroscopy reveals either Pt or Pd segregation for the PdxPty/C catalysts depending on Pd/Pt atomic ratio. CO stripping in 0.5 M H2SO4 and repeated formic acid oxidation cyclic voltammetry in 0.5 M HCHO + 0.5 M H2SO4 have been conducted to test out the CO tolerance and stability of the catalysts, respectively. It has been found that, with the increase of Pd/Pt atomic ratio, the CO stripping peak potential increases (less CO tolerant), whereas the catalyst stability towards formic acid oxidation decreases. The as-prepared catalysts reveal excellent mass-normalized formic acid oxidation activity as compared with published results possibly due to high dispersion and the absence of high molecular capping agents.

  16. Preparation and characterization of vanadium(Ⅳ) oxide supported on SBA-15 and its catalytic performance in benzene hydroxylation to phenol using molecular oxygen

    Institute of Scientific and Technical Information of China (English)

    Xing Chen; Wenguang Zhao; Feng Wang; Jie Xu

    2012-01-01

    Preparation of dispersed transition metal oxides catalyst with low oxidation state still remains a challenging task in heterogeneous catalysis.In this study,vanadium oxides supported on zeolite SBA-15 have been prepared under hydrothermal condition using V2O5 and oxalic acid as sources of vanadium and reductant,respectively.The structures of samples,especially the oxidation state of vanadium,and the surface distribution of vanadium oxide species,have been thoroughly characterized using various techniques,including N2-physisorption,X-ray diffraction (XRD),transmission electron microscopy (TEM),X-ray photoelectron spectroscopy (XPS),UV-visible spectra (UV-Vis) and UV-visible-near infrared spectra (UV-Vis-NIR).It is found that the majority of supported vanadium was in the form of vanadium(Ⅳ) oxide species with the low valence of vanadium.By adjusting hydrothermal treatment time,the surface distribution of vanadium(Ⅳ) oxide species can be tuned from vanadium(Ⅳ) oxide cluster to crystallites.These materials have been tested in the hydroxylation of benzene to phenol in liquid-phase with molecular oxygen in the absence of reductant.The catalyst exhibits high selectivity for phenol (61%) at benzene conversion of 4.6%,which is a relatively good result in comparison with other studies employing molecular oxygen as the oxidant.

  17. Organisation, regulations, preparation and logistics of parenteral nutrition in hospitals and homes; the role of the nutrition support team – Guidelines on Parenteral Nutrition, Chapter 8

    Directory of Open Access Journals (Sweden)

    Kester, L.

    2009-11-01

    Full Text Available PN (parenteral nutrition should be standardised to ensure quality and to reduce complications, and it should be carried out in consultation with a specialised nutrition support team whenever possible. Interdisciplinary nutrition support teams should be established in all hospitals because effectiveness and efficiency in the implementation of PN are increased. The tasks of the team include improvements of quality of care as well as enhancing the benefit to cost ratio. Therapeutic decisions must be taken by attending physicians, who should collaborate with the nutrition support team. “All-in-One” bags are generally preferred for PN in hospitals and may be industrially manufactured, industrially manufactured with the necessity to add micronutrients, or be prepared “on-demand” within or outside the hospital according to a standardised or individual composition and under consideration of sterile and aseptic conditions. A standardised procedure should be established for introduction and advancement of enteral or oral nutrition. Home PN may be indicated if the expected duration of when PN exceeds 4 weeks. Home PN is a well established method for providing long-term PN, which should be indicated by the attending physician and be reviewed by the nutrition support team. The care of home PN patients should be standardised whenever possible. The indication for home PN should be regularly reviewed during the course of PN.

  18. Preparation of a biocatalyst via physical adsorption of lipase from Thermomyces lanuginosus on hydrophobic support to catalyze biolubricant synthesis by esterification reaction in a solvent-free system.

    Science.gov (United States)

    Lage, Flávia A P; Bassi, Jaquelinne J; Corradini, Maria C C; Todero, Larissa M; Luiz, Jaine H H; Mendes, Adriano A

    2016-03-01

    Lipase from Thermomyces lanuginosus (TLL) was immobilized on mesoporous hydrophobic poly-methacrylate (PMA) particles via physical adsorption (interfacial activation of the enzyme on the support). The influence of initial protein loading (5-200mg/g of support) on the catalytic properties of the biocatalysts was determined in the hydrolysis of olive oil emulsion and synthesis of isoamyl oleate (biolubricant) by esterification reaction. Maximum adsorbed protein loading and hydrolytic activity were respectively ≈100mg/g and ≈650 IU/g using protein loading of 150mg/g of support. The adsorption process followed the Langmuir isotherm model (R(2)=0.9743). Maximum ester conversion around 85% was reached after 30min of reaction under continuous agitation (200rpm) using 2500mM of each reactant in a solvent-free system, 45°C, 20%m/v of the biocatalyst prepared using 100mg of protein/g of support. Apparent thermodynamic parameters of the esterification reaction were also determined. Under optimal experimental conditions, reusability tests of the biocatalyst (TLL-PMA) after thirty successive cycles of reaction were performed. TLL-PMA fully retained its initial activity up to twenty two cycles of reaction, followed by a slight decrease around 8.6%. The nature of the product (isoamyl oleate) was confirmed by attenuated total reflection Fourier transform infrared (ATR-FTIR), proton ((1)H NMR) and carbon ((13)C NMR) nuclear magnetic resonance spectroscopy analyses.

  19. Organisation, regulations, preparation and logistics of parenteral nutrition in hospitals and homes; the role of the nutrition support team - Guidelines on Parenteral Nutrition, Chapter 8.

    Science.gov (United States)

    Bischoff, S C; Kester, L; Meier, R; Radziwill, R; Schwab, D; Thul, P

    2009-11-18

    PN (parenteral nutrition) should be standardised to ensure quality and to reduce complications, and it should be carried out in consultation with a specialised nutrition support team whenever possible. Interdisciplinary nutrition support teams should be established in all hospitals because effectiveness and efficiency in the implementation of PN are increased. The tasks of the team include improvements of quality of care as well as enhancing the benefit to cost ratio. Therapeutic decisions must be taken by attending physicians, who should collaborate with the nutrition support team. "All-in-One" bags are generally preferred for PN in hospitals and may be industrially manufactured, industrially manufactured with the necessity to add micronutrients, or be prepared "on-demand" within or outside the hospital according to a standardised or individual composition and under consideration of sterile and aseptic conditions. A standardised procedure should be established for introduction and advancement of enteral or oral nutrition. Home PN may be indicated if the expected duration of when PN exceeds 4 weeks. Home PN is a well established method for providing long-term PN, which should be indicated by the attending physician and be reviewed by the nutrition support team. The care of home PN patients should be standardised whenever possible. The indication for home PN should be regularly reviewed during the course of PN.

  20. Facile and fast preparation of low-cost silica-supported graphitic carbon nitride for solid-phase extraction of fluoroquinolone drugs from environmental waters.

    Science.gov (United States)

    Speltini, Andrea; Maraschi, Federica; Govoni, Roberta; Milanese, Chiara; Profumo, Antonella; Malavasi, Lorenzo; Sturini, Michela

    2017-03-17

    The analytical application of silica-supported graphitic carbon nitride (g-C3N4@silica) for solid-phase extraction (SPE) of fluoroquinolone (FQ) pollutants from water is presented for the first time. g-C3N4@silica was easily and quickly prepared by one-pot thermal condensation of dicyandiamide and characterized by powder X-ray diffraction, thermogravimetric analysis, scanning electron microscopy, Fourier transform infrared spectroscopy and surface area measurements. The novel composite was applied as sorbent for SPE of FQs from water prior high-performance liquid chromatography with fluorescence detection. The extraction efficiency of g-C3N4 was tested in tap and surface waters at actual concentrations (10-100ngL(-1)). Quantitative adsorption was achieved using 100mg sorbent (20wt% g-C3N4) for pre-concentration of 50-500mL sample, at the native pH (∼7.5-8). Elution was performed with 25mM H3PO4 aqueous solution-acetonitrile (80:20), obtaining recoveries in the range 70-114%, enrichment factors up to 500 and inter-day RSDs≤12%. The batch-to-batch reproducibility was assessed on three independently synthesized g-C3N4@silica preparations (RSD 6-12%). g-C3N4 supported on silica microparticles proved to be of easy preparation, inexpensive, reusable for at least 4 extractions of raw surface waters, and suitable for determination in real matrices. Copyright © 2017 Elsevier B.V. All rights reserved.

  1. Foundations of Psychological Testing: A Practical Approach. Second Edition

    Science.gov (United States)

    McIntire, Sandra A.; Miller, Leslie A.

    2006-01-01

    The second edition of "Foundations of Psychological Testing: A Practical Approach" is a text for undergraduate students new to the field of psychological testing. Using a conversational format, the authors aim to prepare students to be informed consumers as test users or test takers. Features new to the second edition include: (1) New Content; (2)…

  2. Community Guide to Evaluating Aboriginal Healing Foundation Activity.

    Science.gov (United States)

    Aboriginal Healing Foundation, Ottawa (Ontario).

    The Aboriginal Healing Foundation (AHF), based in Ottawa (Ontario), works with Canada Native communities to reduce incidents of physical and sexual abuse, children in care, suicide, and incarceration among residential school survivors and their families. This guide has been prepared to help communities evaluate their AHF-funded activities in the…

  3. Preparation of metal wire supported solid-phase microextraction fiber coated with multi-walled carbon nanotubes.

    Science.gov (United States)

    Feng, Juanjuan; Sun, Min; Xu, Lili; Li, Jubai; Liu, Xia; Jiang, Shengxiang

    2011-09-01

    Multi-walled carbon nanotubes-coated solid-phase microextraction fiber was prepared by a novel protocol involving mussel-adhesive-protein-inspired polydopamine film. The polydopamine was used as binding agent to immobilize amine-functionalized multi-walled carbon nanotubes onto the surface of the stainless steel wire via Michael addition or Schiff base reaction. Surface properties of the fiber were characterized by field emission scanning electron microscope and X-ray photoelectron spectroscope. Six phenols in aqueous solution were used as model compounds to investigate the extraction performance of the fiber and satisfactory results were obtained. Limit of detection was 0.10 μg/L for 2-methylphenol (2-MP) and 4-methylphenol (4-MP), and 0.02 μg/L for 2-ethylphenol (2-EP), 4-ethylphenol (4-EP), 2-tert-butylphenol (2-t-BuP), and 4-tert-butylphenol (4-t-BuP), which were much lower than commercial fiber and fibers made in laboratory. RSDs for one unique fiber are in the range of 1.92-7.00%. Fiber-to-fiber (n=3) reproducibility ranges from 4.44 to 8.41%. It also showed very high stability and durability to acid, alkali, organic solvent, and high temperature. Real water sample from Yellow river was applied to test the reliability of the established solid-phase microextraction (SPME)-GC method and recoveries with addition level at 5 and 100 μg/L were in the range from 81.5 to 110.0%.

  4. Effect of counterpart metals in carbon-supported Pt-based catalysts prepared using radiation chemical method

    Science.gov (United States)

    Okazaki, Tomohisa; Seino, Satoshi; Matsuura, Yoshiyuki; Otake, Hiroaki; Kugai, Junichiro; Ohkubo, Yuji; Nitani, Hiroaki; Nakagawa, Takashi; Yamamoto, Takao A.

    2017-04-01

    The process of nanoparticle formation by radiation chemical synthesis in a heterogeneous system has been investigated. Carbon-supported Pt-based bimetallic nanoparticles were synthesized using a high-energy electron beam. Rh, Cu, Ru, and Sn were used as counterpart metals. The nanoparticles were characterized by inductively coupled plasma atomic emission spectrometry, transmission electron microscopy, X-ray diffraction, and X-ray absorption spectroscopy. PtRh formed a uniform random alloy nanoparticle, while Cu partially formed an alloy with Pt and the remaining Cu existed as CuO. PtRu formed an alloy structure with a composition distribution of a Pt-rich core and Ru-rich shell. No alloying was observed in PtSn, which had a Pt-SnO2 structure. The alloy and oxide formation mechanisms are discussed considering the redox potentials, the standard enthalpy of oxide formation, and the solid solubilities of Pt and the counterpart metals.

  5. Preparation of 3D nanoporous copper-supported cuprous oxide for high-performance lithium ion battery anodes.

    Science.gov (United States)

    Liu, Dequan; Yang, Zhibo; Wang, Peng; Li, Fei; Wang, Desheng; He, Deyan

    2013-03-01

    Three-dimensional (3D) nanoporous architectures can provide efficient and rapid pathways for Li-ion and electron transport as well as short solid-state diffusion lengths in lithium ion batteries (LIBs). In this work, 3D nanoporous copper-supported cuprous oxide was successfully fabricated by low-cost selective etching of an electron-beam melted Cu(50)Al(50) alloy and subsequent in situ thermal oxidation. The architecture was used as an anode in lithium ion batteries. In the first cycle, the sample delivered an extremely high lithium storage capacity of about 2.35 mA h cm(-2). A high reversible capacity of 1.45 mA h cm(-2) was achieved after 120 cycles. This work develops a promising approach to building reliable 3D nanostructured electrodes for high-performance lithium ion batteries.

  6. Preparation of Nano-Sized γ-Al2O3 Supported Iron Catalyst for Fischer-Tropsch Synthesis by Solvated Metal Atom Impregnation Methods

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    Two types of small iron clusters supported on γ-Al2O3-RT(dehydroxylated at room temperature) and γ-Al2O3-800 (dehydroxylated at 800 ℃) were prepared by solvated metal atom impregnation (SMAI) techniques. The iron atom precursor complex, bis(toluene)iron(0) formed in the metal atom reactor, was impregnated into γ-Al2O3 having different concentrations of surface hydroxyl groups to study the effect of surface hydroxylation on the crucial stage of iron cluster formation. Catalysts prepared in this way were characterized by TEM, M(o)ssbauer, and chemisorption measurements, and the results show that higher concentration of surface hydroxyl groups of γ-Al2O3-RT favors the formation of more positively charged supported iron cluster Fen/γ-Al2O3-RT, and the lower concentration of surface hydroxyl groups of γ-Al2O3-800 favors the formation of basically neutral supported iron cluster Fen/γ-Al2O3-800. The measured results also indicate that the higher concentration of surface hydroxyl groups causes the rapid decomposition of precursor complex, bis(toluene)iron(0), and favors the formation of relatively large iron cluster. Consequently, these two types of catalysts show different catalytic properties in Fischer-Tropsch reaction. The catalytic pattern of Fen/γ-Al2O3-RT in F-T reaction is similar to that of the unreduced α-Fe2O3 and that of Fen/γ-Al2O3-800 is similar to that of the reduced α-Fe2O3.

  7. A logical foundation for the semantic Web

    Institute of Scientific and Technical Information of China (English)

    SHI Zhongzhi; DONG Mingkai; JIANG Yuncheng; ZHANG Haijun

    2005-01-01

    The current research progresses and problems of the semantic Web are analyzed in this paper, and the insufficiency of using description logic to act as logical foundation for the semantic Web is analyzed too. According to the characteristics and requirement of the semantic Web, a kind of new dynamic description logic (DDL) framework is presented. The representation and reasoning of static knowledge and dynamic knowledge are integrated in this framework. Especially, a kind of action description method is proposed, and according to description logic theory, the action semantics is described, so DDL is a kind of formal logical framework which can process static knowledge and dynamic knowledge. The DDL has clear and formally defined semantics. It provides decidable reasoning services, and it can support effective representation and reasoning of the static knowledge, dynamic process and running mechanism (realization and subsumption relation of action). Therefore, the DDL provides reasonable logic foundation for the semantic Web, and overcomes the insufficiency of using description logic to act as logical foundation for the semantic Web.

  8. Energy biotechnology at the National Science Foundation

    Energy Technology Data Exchange (ETDEWEB)

    Heineken, F.G. [National Science Foundation, Washington, DC (United States)

    1993-12-31

    A number of projects supported by the National Science Foundation (NSF) have possible applications in the area of Energy Biotechnology. These range from studies on the metabolic pathways for solvent and fuel production using microorganisms, both aerobic and anaerobic, to the conversion of biomass for the production of fuels and other chemicals and materials. Other projects focus in on new purification and separation technologies as well as new process monitoring techniques that could have an impact on solvent and fuel production. A brief review of these activities will be presented as well as a discussion of future needs and opportunities for research in Energy Biotechnology at NSF.

  9. Mastering Windows Server 2008 Networking Foundations

    CERN Document Server

    Minasi, Mark; Mueller, John Paul

    2011-01-01

    Find in-depth coverage of general networking concepts and basic instruction on Windows Server 2008 installation and management including active directory, DNS, Windows storage, and TCP/IP and IPv4 networking basics in Mastering Windows Server 2008 Networking Foundations. One of three new books by best-selling author Mark Minasi, this guide explains what servers do, how basic networking works (IP basics and DNS/WINS basics), and the fundamentals of the under-the-hood technologies that support staff must understand. Learn how to install Windows Server 2008 and build a simple network, security co

  10. Fast preparation of PtRu catalysts supported on carbon nanofibers by the microwave-polyol method and their application to fuel cells.

    Science.gov (United States)

    Tsuji, Masaharu; Kubokawa, Masatoshi; Yano, Ryuto; Miyamae, Nobuhiro; Tsuji, Takeshi; Jun, Mun-Suk; Hong, Seonghwa; Lim, Seongyop; Yoon, Seong-Ho; Mochida, Isao

    2007-01-16

    PtRu alloy nanoparticles (24 +/- 1 wt %, Ru/Pt atomic ratios = 0.91-0.97) supported on carbon nanofibers (CNFs) were prepared within a few minutes by using a microwave-polyol method. Three types of CNFs with very different surface structures, such as platelet, herringbone, and tubular ones, were used as new carbon supports. The dependence of particles sizes and electrochemical properties on the structures of CNFs was examined. It was found that the methanol fuel cell activities of PtRu/CNF catalysts were in the order of platelet > tubular > herringbone. The methanol fuel cell activities of PtRu/CNFs measured at 60 degrees C were 1.7-3.0 times higher than that of a standard PtRu (29 wt %, Ru/Pt atomic ratio = 0.92) catalyst loaded on carbon black (Vulcan XC72R) support. The best electrocatalytic activity was obtained for the platelet CNF, which is characterized by its edge surface and high graphitization degree.

  11. One-pot synthesis of 3-dimensional reduced graphene oxide-based hydrogel as support for microbe immobilization and BOD biosensor preparation.

    Science.gov (United States)

    Liu, Ling; Zhai, Junfeng; Zhu, Chengzhou; Gao, Ying; Wang, Yue; Han, Yanchao; Dong, Shaojun

    2015-01-15

    We report a hydrothermal method to prepare reduced graphene oxide (rGO)-based hydrogel (Gel(rGONR)), using neutral red (NR) to mediate the assembly of rGO sheets and tune the pore size of Gel(rGONR). A series of techniques including scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), Raman spectroscopy and BET were employed to characterize the physico-chemical properties of Gel(rGONR). A large pore size of up to 20 µm and interconnected porous structure of Gel(rGONR) were obtained. Gel(rGONR) was used as a support for immobilizing microbe (denoted as Gel(rGONR-M)), which showed ~3.3 times more load mass of microbe than commonly used supports (i.e., activated carbon and carbon fiber felt) and 2.5 times higher biodegradation efficiency (BE) than carbon fiber felt. Further use of Gel(rGONR-M) as a biocatalyst for establishing a BOD biosensor exhibits a linear range of 2-64 mg O L(-1) and a detection limit 0.4 mg O L(-1) for glucose-glutamic acid (GGA). Moreover, our proposed BOD detection strategy shows a long-term viability over one year and stability up to 2 months with a relative standard deviation of 2.1%. Our results demonstrated the great potential of employing Gel(rGONR) as a microbe-immobilization support for biosensor development.

  12. RuO2 supported NaY zeolite catalysts: Effect of preparation methods on catalytic performance during aerobic oxidation of benzyl alcohol

    Science.gov (United States)

    Jung, Dasom; Lee, Sunwoo; Na, Kyungsu

    2017-10-01

    The effects of preparation method for RuO2 supported zeolite catalysts on the catalytic consequences during the aerobic oxidation of benzyl alcohol to benzaldehyde were investigated. Three preparation methods, i.e., (i) simultaneous crystallization of the zeolite framework in the presence of RuCl3 (Ru(SC)/NaY), (ii) post ion-exchange with RuCl3 on the zeolite framework (Ru(IE)/NaY), and (iii) post support of preformed Ru metal nanoparticles on the zeolite surface (Ru(PS)/NaY), were used to construct three different RuO2 supported NaY zeolite catalysts. The catalyst performance was investigated as functions of the reaction time and temperature, in correlation with the structural changes of the catalysts, as analyzed by X-ray diffraction (XRD). The results revealed that the catalytic consequences were dramatically affected by the preparation methods. Although similar conversion was achieved with all three catalysts, the turnover frequency (TOF) differed. The Ru(PS)/NaY catalyst exhibited the highest TOF (33-48 h-1), whereas the other catalysts produced much lower TOFs (9-12 h-1). The Ru(PS)/NaY catalyst also had the highest activation energy (Ea) of 48.39 kJ mol-1, whereas the Ru(SC)/NaY and Ru(IE)/NaY catalysts had Ea values of 18.58 and 24.11 kJ mol-1, respectively. Notably, the Ru(PS)/NaY catalyst yielded a significantly higher pre-exponential factor of 5.22 × 105 h-1, which is about 5 orders of magnitude larger than that of the Ru(SC)/NaY catalyst (7.15 × 100 h-1). This suggests that collision between benzyl alcohol and molecular oxygen was very intensive on the Ru(PS)/NaY catalyst, which explains the higher TOF of the Ru(PS)/NaY catalyst relative to the others in spite of the higher Ea value of the former. In terms of recyclability, the pristine crystallinity of the zeolite framework was maintained in the Ru(SC)/NaY catalyst and the RuO2 phase exhibited an insignificant loss of the initial activity up to three catalytic cycles, whereas Ru(PS)/NaY showed slight

  13. The UK Foundation Programme for newly qualified doctors: a SWOT analysis

    OpenAIRE

    David Stephen Lawrence; Christopher Gareth Williams

    2014-01-01

    Introduction: After completing a five year undergraduate degree, all newly qualified doctors in the United Kingdom undertake a two-year Foundation Programme which aims to provide them with the necessary experience, supervision and guidance to prepare them for a career in clinical medicine. Foundation Doctors are paid members of the team and undertake a variety of clinical rotations with supervision from senior colleagues, a process that is regulated by a UK Foundation Programme Office. Object...

  14. Scour Development around Bucket Foundations

    DEFF Research Database (Denmark)

    Stroescu, Ionut Emanuel; Frigaard, Peter Bak; Fejerskov, Morten

    2015-01-01

    The design without scour protection is a sensitive topic to most offshore developers, especially in the North Sea. However, newer research show that this concept is realistic if exists extended comprehension of the scour and backfill phenomena. The present paper shows comparative results for mono......The design without scour protection is a sensitive topic to most offshore developers, especially in the North Sea. However, newer research show that this concept is realistic if exists extended comprehension of the scour and backfill phenomena. The present paper shows comparative results...... for monopile and Bucket Foundation; using experimental analysis and real scour surveys around offshore installed Bucket Foundations. The main finding reflect that Bucket Foundation is a candidate for design without scour protection behaving like scour protected monopoles, in a variety of environmental...

  15. Macroelement modeling of shallow foundations

    CERN Document Server

    Chatzigogos, Charisis; Salençon, J

    2008-01-01

    The paper presents a new macroelement model for shallow foundations. The model is defined through a non-linear constitutive law written in terms of some generalized force and displacement parameters. The linear part of this constitutive law comes from the dynamic impedances of the foundation. The non-linear part comprises two mechanisms. One is due to the irreversible elastoplastic soil behavior: it is described with a bounding surface hypoplastic model, adapted for the description of the cyclic soil response. An original feature of the formulation is that the bounding surface is considered independently of the surface of ultimate loads of the system. The second mechanism is the detachment that can take place at the soil-footing interface (foundation uplift). It is totally reversible and non-dissipative and can thus be described by a phenomenological non-linear elastic model. The macroelement is qualitatively validated by application to soil-structure interaction analyses of simple real structures.

  16. Deterministic Remote State Preparation via the χ State

    Science.gov (United States)

    Zhang, Pei; Li, Xian; Ma, Song-Ya; Qu, Zhi-Guo

    2017-05-01

    Two deterministic schemes using the χ state as the entangled channel are put forward to realize the remote preparation of arbitrary two- and three-qubit states. To design the schemes, we construct sets of ingenious measurement bases, which have no restrictions on the coefficients of the prepared state. At variance with the existing schemes via the χ state, the success probabilities of the proposed schemes are greatly improved. Supported by the National Natural Science Foundation of China under Grant Nos. 61201253, 61373131, 61572246, Priority Academic Program Development of Jiangsu Higher Education Institutions, and Collaborative Innovation Center of Atmospheric Environment and Equipment Technology

  17. Preparation of a disulfide-linked precipitative soluble support for solution-phase synthesis of trimeric oligodeoxyribonucleotide 3´-(2-chlorophenylphosphate building blocks

    Directory of Open Access Journals (Sweden)

    Amit M. Jabgunde

    2015-09-01

    Full Text Available The preparation of a disulfide-tethered precipitative soluble support and its use for solution-phase synthesis of trimeric oligodeoxyribonucleotide 3´-(2-chlorophenylphosphate building blocks is described. To obtain the building blocks, N-acyl protected 2´-deoxy-5´-O-(4,4´-dimethoxytritylribonucleosides were phosphorylated with bis(benzotriazol-1-yl 2-chlorophenyl phosphate. The “outdated” phosphotriester strategy, based on coupling of PV building blocks in conjunction with quantitative precipitation of the oligodeoxyribonucleotide with MeOH is applied. Subsequent release of the resulting phosphate and base-protected oligodeoxyribonucleotide trimer 3’-pTpdCBzpdGibu-5’ as its 3’-(2-chlorophenyl phosphate was achieved by reductive cleavage of the disulfide bond.

  18. Preparation of a disulfide-linked precipitative soluble support for solution-phase synthesis of trimeric oligodeoxyribonucleotide 3´-(2-chlorophenylphosphate) building blocks

    Science.gov (United States)

    Molina, Alejandro Gimenez; Virta, Pasi; Lönnberg, Harri

    2015-01-01

    Summary The preparation of a disulfide-tethered precipitative soluble support and its use for solution-phase synthesis of trimeric oligodeoxyribonucleotide 3´-(2-chlorophenylphosphate) building blocks is described. To obtain the building blocks, N-acyl protected 2´-deoxy-5´-O-(4,4´-dimethoxytrityl)ribonucleosides were phosphorylated with bis(benzotriazol-1-yl) 2-chlorophenyl phosphate. The “outdated” phosphotriester strategy, based on coupling of PV building blocks in conjunction with quantitative precipitation of the oligodeoxyribonucleotide with MeOH is applied. Subsequent release of the resulting phosphate and base-protected oligodeoxyribonucleotide trimer 3’-pTpdCBzpdGibu-5’ as its 3’-(2-chlorophenyl phosphate) was achieved by reductive cleavage of the disulfide bond. PMID:26664575

  19. MCM-41 supported 12-tungstophosphoric acid mesoporous materials: Preparation, characterization, and catalytic activities for benzaldehyde oxidation with H2O2

    Science.gov (United States)

    Chen, Ya; Zhang, Xiao-Li; Chen, Xi; Dong, Bei-Bei; Zheng, Xiu-Cheng

    2013-10-01

    Mesoporous molecular sieves MCM-41 and bulk 12-tungstophosphoric acid (HPW) were synthesized and employed to prepare 5-45 wt.% HPW/MCM-41 mesoporous materials. Characterization results suggested the good dispersion of HPW within MCM-41 when the loading of HPW was less than 35 wt.% and HPW/MCM-41 retained the typical mesopore structure of the supports. The results of the catalytic oxidation of benzaldehyde to benzoic acid with 30% H2O2, in the absence of any organic solvent and co-catalysts, indicated that HPW/MCM-41 was an efficient catalyst and 30 wt.% HPW/MCM-41 sample exhibited the highest catalytic activity among these materials.

  20. Improving boiler foundation bolt installation technology%提高锅炉地脚螺栓安装工艺

    Institute of Scientific and Technical Information of China (English)

    李晓峰

    2014-01-01

    阐述了锅炉地脚螺栓安装前的准备工作,通过对螺栓安装施工工艺流程的介绍,分析了提高螺栓与螺栓支架安装精度的方法,并对检验螺栓安装质量的技术要点作了研究,以确保锅炉地脚螺栓安装的正确无误。%The paper illustrates boiler foundation bolt installation preparations. Through introducing bolt installation technology procedures, it analyzes methods of improving bolt and bolt support installation accuracy, and studies technological points of examining bolt installation quality, with a view to guarantee boiler foundation bolt installation correct.

  1. Preparation of highly dispersed Ru-Sn bimetallic supported catalysts from the single source precursors Cp(PPh32Ru-SnX3 (X = Cl or Br

    Directory of Open Access Journals (Sweden)

    Ana Cláudia Bernardes Silva

    2003-06-01

    Full Text Available In this work highly dispersed Ru-Sn bimetallic catalysts have been prepared from organobimetallic Cp(PPh32Ru-SnX3 (X = Cl or Br complexes. These single source precursors can be easily impregnated in high surface area supports, such as activated carbon and sol-gel SiO2, and upon controlled thermal treatment the ligands are released as volatile products resulting in the formation of the bimetallic system Ru-Sn. Catalytic reactions, such as hydrodechlorination of CCl4 and chlorobenzene and TPR (Temperature Programmed Reduction experiments carried out with these RuSn catalysts suggested a strong interaction between Ruthenium and Tin. Mössbauer measurements showed that these materials when exposed to air are immediately oxidized to form Sn (IV. It was shown that upon controlled reduction conditions with H2 it is possible to reduce selectively Sn to different oxidation states and different phases. The Sn oxidation state showed significant effect on the catalytic hydrogenation of 1,5-cyclooctadiene. The use of these single source precursors with a controlled decomposition/reduction procedure allows the preparation of unique catalysts with an intimate interaction between the components ruthenium and tin and the possibility of varying the Sn oxidation state around the Ru metal.

  2. Preparation of Co-Mo catalyst using activated carbon produced from egg shell and SiO2 as support – A hydrogenation study

    Directory of Open Access Journals (Sweden)

    Adeniyi Sunday Ogunlaja

    2010-12-01

    Full Text Available The preparation of a series of cobalt-molybdenum (Co-Mo catalysts supported on SiO2 and carbonized egg shells were investigated using standard procedures; the catalysts were further calcined at the 500 oC temperature to generate the internally consistent set, and the metal atoms content were varied in a regular manner. The ratio 1:4 (Co2+: Mo6+ by weight was employed for the various catalysts prepared. The carbonized egg shells were divided into two parts: the first part was leached with HNO3, as the other one was not leached. Activity tests were run using these catalysts containing leached and unleached carbon for the hydrogenation of methyl orange; the changes in absorbance regarding the unhydrogenated methyl orange at a wavelength of 460 nm were respectively 0.07 and 0.067 when the catalyst containing the leached carbonized egg shell (catalyst A and the catalyst containing the unleached activated carbon (catalyst B were used for the hydrogenation reaction. This confirms that catalyst A is more efficient in hydrogenating methyl orange than catalyst B.

  3. Foundation Ownership, Reputation, and Labour

    DEFF Research Database (Denmark)

    Børsting, Christa Winther; Thomsen, Steen

    2017-01-01

    of profitability and growth, despite lacking governance mechanisms such as profit incentives or takeover threats. Given their non-profit ownership, they might be expected to behave more responsibly towards stakeholders, such as employees or customers (Hansmann, 1980), but so far there has been little empirical...... ratings. Secondary evidence on labour market behaviour is consistent with these findings. Using matched employer–employee data we show that foundation-owned companies are more stable employers, pay their employees better, and keep them for longer. Altogether, the evidence indicates that foundation...

  4. Physical foundations of technical acoustics

    CERN Document Server

    Malecki, I

    1969-01-01

    Physical Foundations of Technical Acoustics discusses theoretical foundations of acoustical engineering. It is not so much a technical compendium as a systematic statement of physical laws so conceived that technologists might find in it all the information they need to become acquainted with the physical meaning and mathematical expression of phenomena they encounter in their work. To facilitate the acquirement of notions, which lie beyond a layman's grasp, the plan of narration adopted consists in beginning with the simplest idealized cases and then gradually moving on to the truest possibl

  5. On the foundation of Mechanics

    CERN Document Server

    Alonso-Blanco, Ricardo J

    2014-01-01

    This note is an extended version of "A note on the foundations of Mechanics", arXiv: 1404.1321 [math-ph]. A presentation of its contents was given in a talk in memorial homage to the professor Juan B. Sancho Guimer\\'a. For this reason, it was written in spanish language. The matter of the note is a systematic foundation of the most classical part of Mechanics. The content by sections is: 0)Notions and basic results, 1)Conservative systems 2) Time. Time constraints, 3) Proper time. Relativistic forces, 4)Electromagnetic fields, 5) On the Hamilton-Noether Principle, 6) Schr\\"odinger equation.

  6. Professional Team Foundation Server 2010

    CERN Document Server

    Blankenship, Ed; Holliday, Grant; Keller, Brian

    2011-01-01

    Authoritative guide to TFS 2010 from a dream team of Microsoft insiders and MVPs!Microsoft Visual Studio Team Foundation Server (TFS) has evolved until it is now an essential tool for Microsoft?s Application Lifestyle Management suite of productivity tools, enabling collaboration within and among software development teams. By 2011, TFS will replace Microsoft?s leading source control system, VisualSourceSafe, resulting in an even greater demand for information about it. Professional Team Foundation Server 2010, written by an accomplished team of Microsoft insiders and Microsoft MVPs, provides

  7. Professional Team Foundation Server 2012

    CERN Document Server

    Blankenship, Ed; Holliday, Grant; Keller, Brian

    2012-01-01

    A comprehensive guide to using Microsoft Team Foundation Server 2012 Team Foundation Server has become the leading Microsoft productivity tool for software management, and this book covers what developers need to know to use it effectively. Fully revised for the new features of TFS 2012, it provides developers and software project managers with step-by-step instructions and even assists those who are studying for the TFS 2012 certification exam. You'll find a broad overview of TFS, thorough coverage of core functions, a look at extensibility options, and more, written by Microsoft ins

  8. Sol-gel preparation of TiO{sub 2}-ZrO{sub 2} thin films supported on glass rings: Influence of phase composition on photocatalytic activity

    Energy Technology Data Exchange (ETDEWEB)

    Hernandez-Alonso, Maria D. [Instituto de Catalisis y Petroleoquimica, CSIC, c/ Marie Curie, 2. Cantoblanco. 28049 Madrid (Spain)]. E-mail: mdhernandez@icp.csic.es; Tejedor-Tejedor, Isabel [Environmental Chemistry and Technology Program, University of Wisconsin, 660 North Park Street, Madison, WI 53706 (United States); Coronado, Juan M. [Instituto de Catalisis y Petroleoquimica, CSIC, c/ Marie Curie, 2. Cantoblanco. 28049 Madrid (Spain)]. E-mail: juanmanuel.coronado@ciemat.es; Soria, Javier [Instituto de Catalisis y Petroleoquimica, CSIC, c/ Marie Curie, 2. Cantoblanco. 28049 Madrid (Spain); Anderson, Marc A. [Environmental Chemistry and Technology Program, University of Wisconsin, 660 North Park Street, Madison, WI 53706 (United States)

    2006-04-28

    In order to optimize the characteristics of TiO{sub 2}-ZrO{sub 2} thin films supported on glass for the photocatalytic removal of VOCs, acidic sols of different composition (ZrO{sub 2}, TiO{sub 2} and Ti-Zr mixed oxides) have been prepared using metal alkoxides as starting materials. The photoactive oxides were deposited on 'Raschig rings' of borosilicate glass using a dip-coating technique. The phase composition of the thin films was controlled during the sol preparation stage to produce either (1) Ti{sub 0.9}Zr{sub 0.1}O{sub 2} solid solutions, or (2) ZrO{sub 2}/TiO{sub 2} binary metal oxides (10% and 20% molar content of Zr). The particle size of the different sols was measured by photon correlation spectroscopy, and the xerogels were characterized by XRD, N{sub 2} adsorption isotherms, and TG-DTA, so as to monitor the modifications induced by the thermal treatments. Raman spectroscopy was used to determine the crystalline structure of the supported TiO{sub 2}-ZrO{sub 2} oxides, which in all cases corresponded to the anatase phase. The band gap of the thin films was estimated from the UV-vis spectra, and none of them differed significantly from that of unmodified TiO{sub 2}. The photoactivity of the coated glass 'Raschig rings' was measured for the oxidation of acetone and methylcyclohexane vapors using, respectively, total recycle and single pass plug flow photoreactors. The results obtained indicate that, for the same Zr content, the photoactivity of the films containing binary metal oxides is slightly higher than that of the solid solution. In contrast, specific surface area seems to have little influence on the performance of the thin films.

  9. Metal segregation in supported bimetallic catalysts:. gamma. -Al/sub 2/O/sub 3/-supported CO hydrogenation catalysts prepared from RhOs/sub 3/, Rh/sub 4/, and FeOs/sub 3/ clusters

    Energy Technology Data Exchange (ETDEWEB)

    Budge, J.R.; Lucke, B.F.; Gates, B.C.; Toran, J.

    1985-02-01

    Al/sub 2/O/sub 3/-supported metals were prepared from (H/sub 2/RhOs/sub 3/(CO)/sub 10/(acetylacetonate)), (Rh/sub 4/(CO)/sub 12/), and (H/sub 2/FeOs/sub 3/(CO)/sub 13/). The samples were characterized by infrared spectroscopy after reaction with CO + H/sub 2/ and tested as catalysts for conversion of CO + H/sub 2/ in a flow reactor at 200 and 270/sup 0/C and 10 atm. Used catalysts were characterized by transmission electron microscopy, X-ray photoelectron spectroscopy, infrared spectroscopy, and elemental analysis. The catalyst lost Os during operation, presumably as a result of formation of volatile carbonyls. The catalytic reaction products were a nearly Schulz-Flory-Anderson distribution of hydrocarbons with small yields of dimethyl ether (formed from methanol). The performance of the catalyst prepared from the RhOs/sub 3/ clusters was closely similar to that of the catalyst prepared from the Rh/sub 4/ cluster. Characterization of the samples after treatment in CO + H/sub 2/ and after catalysis demonstrated that the RhOs/sub 3/ clusters broke apart, first giving triosmium clusters and mononuclear Rh complexes and then, at higher temperatures, giving Rh crystallites and mononuclear Os complexes. The catalytic activity for hydrocarbon synthesis is attributed to the Rh metal; the activity for methanol synthesis is tentatively associated with ionic Rh complexes. The FeOs/sub 3/ catalyst was two orders of magnitude less active than the Rh Os/sub 3/ catalyst, apparently consisting of small iron oxide particles and mononuclear Os complexes. The selectivity of this catalyst for dimethyl ether formation increased markedly with time onstream in the flow reactor; after 55 h, 36 mol% of the organic product was ether. 25 refs., 5 figs., 3 tabs.

  10. Motion Characteristics of Novel Floating Foundation for Offshore Wind Turbine

    Institute of Scientific and Technical Information of China (English)

    李嘉文; 唐友刚; 王宾

    2016-01-01

    A novel floating foundation to support the NREL offshore 5 MW wind turbine was designed conceptu-ally by combining the characteristics of barge and Spar. The main focus was structural design and hydrodynamic modelling. Based on this novel floating foundation, the hydrodynamic performance was investigated in the fre-quency domain and time domain by using the wave analysis software HydroD and DeepC from Det Norske Veritas. The frequency domain analysis was conducted to investigate the effects of the incident wave angle and water depth. The time-domain analysis was carried out to evaluate the response of the floating foundation under a selected op-erational condition. The hydrodynamic performances of this floating foundation with respect to time series and re-sponse spectra were also investigated in this study.

  11. Optimum design methodologies for pile foundations in London

    Directory of Open Access Journals (Sweden)

    Christos Letsios

    2014-12-01

    Full Text Available Given the importance of pile foundations in geotechnical engineering for supporting high-significance structures such as bridges, high-rise buildings, power plant stations, offshore platforms and museums, it becomes a necessity to find the best pile foundation design in terms of performance and economy. The number of piles required might exceed several hundreds or even thousands while the pile foundation cost might exceed 20% of the construction cost of the superstructure. In this work the problem of finding optimized designs of pile foundations is examined and is performed in accordance to two design code recommendations, namely Eurocode 7 and DIN 4014. The proposed structural optimization procedure is implemented in two real-world cases both located in London, UK in order to assess the efficiency of the proposed design formulation.

  12. Surface properties of palladium catalysts supported on ternary ZrO2-Al2O3-WOx oxides prepared by the sol-gel method: Study of the chemical state of the support

    Science.gov (United States)

    Barrera, A.; Montoya, J. A.; del Angel, P.; Navarrete, J.; Cano, M. E.; Tzompantzi, F.; López-Gaona, A.

    2012-08-01

    The surface properties of Pd and Pd-Pt catalysts supported on binary ZrO2-WOx and ternary ZrO2-Al2O3-WOx oxides prepared by the sol-gel method were studied. Special attention was paid to the study of the texture of the catalysts as well as the chemical state of tungstated zirconia and tungstated zirconia promoted with alumina in the palladium catalysts. The catalysts were tested in the isomerization of n-hexane and were characterized by N2 physisorption, XRD, TPR, Raman spectroscopy, XPS and FT-IR of adsorbed pyridine. The catalysts had bimodal pore size distributions with mesopores in the range 55-70 Å and macropores of 1000 Å in diameter. The catalysts had a surface WOx coverage (4.4-6.0 W nm-2) lower than that of the theoretical monolayer (7.0 W nm-2). A lower acidity of the ternary ZrO2-Al2O3-WOx oxide as compared to the binary ZrO2-WOx oxide was found. Higher activity in the isomerisation of n-hexane was obtained in the Pd-Pt catalysts supported on ternary ZrAlW oxides prepared by sol-gel that is correlated with the coexistence on the surface of W4+ (WO2) or W0 and W6+ (Al2(WO4)3) species, ZrO2 in the tetragonal phase and a high amount of ZrOx suboxides species in a low oxidation state (Zr3+ and Zr2+).

  13. The foundation of a bio based economy. Essay prepared for the National Science Foundation

    Energy Technology Data Exchange (ETDEWEB)

    Faaij, A. [Copernicus Institute, Utrecht University, Utrecht (Netherlands)

    2008-05-15

    This essay addresses the potential and problems of the large-scale use of biomass as an energy source and as a renewable precursor for various materials. The global context of the current bio fuel debate is discussed, as are the major incentives for furthering the development of biomass as an option. The most recent insights into the potential of biomass in relation to world food supply, water, biodiversity and energy demand are dealt with. The essay goes on to examine the crucial role of agriculture and the interlink age of the sustainable development of biomass with the modernization of agriculture. Consideration is also given to the need to guarantee sustainable biomass production and land use, and to construct a working international biomass market (including recent developments in this area), followed by strategic recommendations. It is proposed that, throughout the course of this century, biomass will play a major part in delivering sustainable energy (and materials), reducing greenhouse gas emissions and providing a major economic boost to the world's rural regions. It will enable us to avoid conflicts associated with water use and the protection of biodiversity. If this is to be achieved, however, numerous (sustainable) preconditions must be met, and appropriate biomass options must be developed (specifically with regard to multiannual crops). These measures will have to be combined with substantial investments in improvements to existing agricultural practices and animal husbandry, especially in developing countries. This is a complex message and a challenge for policymakers and for the stakeholders involved. At the same time, however, it is vitally important to achieve results in the areas of reducing greenhouse gas emissions, developing alternatives to fossil fuels (especially oil), combating poverty, and boosting rural development, modernizing agriculture, and improving soil management. Biomass is at the crossroads of all these problems. If tackled correctly, the production and use of biomass can achieve significant synergies. This is a complex but challenging issue, and ultimately an essential option for sustainable development.

  14. Foundations and the Advancement of Postsecondary Education

    Science.gov (United States)

    Morris, Libby V.

    2017-01-01

    The author examined the websites of two large foundations, the Bill and Melinda Gates Foundation and the Lumina Foundation. Each has developed projects and networks, coupled with substantive grants, to improve postsecondary education. These and other foundations have deep and ongoing commitments, not just philosophical but resource-based, to…

  15. “双养教学模式”下中学物理备课探析%Study on Preparing Middle School Physics Lesson under Double Support Teaching Mode

    Institute of Scientific and Technical Information of China (English)

    左庆峰

    2016-01-01

    Prepare lesson is Shanghao lesson prem ise of this article in the New Curriculum ,according to the following physical aesthetic concept "double support teaching mode"of requirements ,from preparation materials , prepare students prepare teaching methods , teaching resources prepared four links to preparation of implementation are explored .%备好课是上好课的前提,本文在新课改背景下,按照物理美学理念下“双养教学模式”的要求,从备教材、备学生、备教学方法、备教学资源4个环节对备课的实施进行了探索。

  16. The Foundation of Nea Paphos

    DEFF Research Database (Denmark)

    Bekker-Nielsen, Tønnes

    2000-01-01

    Traditionally it has been assumed that Nea Paphos was founded by king Nikokles, the last of the Kinyrad dynasty, around 320 BC. A critical reexamination of the evidence reveals this foundation date to be impossible; Nea Paphos was not founded in Nikokles' lifetime and probably not before 294 BC....

  17. Behavior Modeling -- Foundations and Applications

    DEFF Research Database (Denmark)

    This book constitutes revised selected papers from the six International Workshops on Behavior Modelling - Foundations and Applications, BM-FA, which took place annually between 2009 and 2014. The 9 papers presented in this volume were carefully reviewed and selected from a total of 58 papers...

  18. The Governance of Industrial Foundations

    DEFF Research Database (Denmark)

    Børsting, Christa; Kuhn, Johan; Poulsen, Thomas

    We study turnover among executives and directors in companies owned by Danish industrial foundations, which are held to be long term owners. Executives are members of the management board (direktionen), whereas directors a members of the supervisiory board (bestyrelsen). As expected, we find...

  19. About The Rural Development Foundation

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>The Rural Development Foundation ( RDF) ,founded in 1996,is an Indian nonprofit organization with the mission of providingquality education for underprivileged rural children. RDF founded and continues to operate five schools and one junior college inAndhra Pradesh State,

  20. About The Rural Development Foundation

    Institute of Scientific and Technical Information of China (English)

    2014-01-01

    <正>The Rural Development Foundation(RDF),founded in 1996,is an Indian nonprofit organization with the mission of providing quality education for underprivileged rural children.RDF founded and continues to operate five schools and one junior college in Andhra Pradesh State,taking a unique holistic approach to education through innovative programs and methodology.Rather than using the