WorldWideScience

Sample records for abstracts boron americas

  1. Program and Abstracts, Boron Americas IX Final Report

    Feakes, Debra A.

    2006-08-09

    The Scientific and Technical Information (STI) submitted includes the final report and a collection of abstracts for the Ninth Boron in the Americas Conference which was held May 19-22, 2004, in San Marcos, Texas. The topics covered in the abstracts include: Application in Medicine, Application in Organic Synthesis and Catalysis, Boranes and Carboranes, Materials and Polymers, Metallaboranes and Metallacarboranes, Organoboron Compounds, Synthesis and Catalysis, and Theoretical Studies. Attendees represented researchers from government, industry, and academia.

  2. Eleventh international conference on boron chemistry. Programme and abstracts

    Abstracts of reports at the Eleventh International Conference on Boron Chemistry are presented. Born chemistry as a connecting bridge between many fields maintains one of the leading positions in modern chemistry. Methods of synthesis of different boron compounds, properties of the compounds, their use in other regions of chemistry and medicine are widely presented in reports

  3. Abstracts

    2012-01-01

    The Western Characteristics of the Pardims of International Studies in America:With the Huaxla System as a Counterexample Ye Zicheng (4)[ Abstract ] Three flaws are obvious in the three paradigms of International Studies in America. Specifically, their arguments are based on the assumption that the world is anarchic ; they go too far in employing the scientific and rational methodology; they pay little attention to the humans. Hence, the three paradigms of international studies in America aren' t necessarily useful for the explanation of China' s history and culture as well as its relations with the outside world. The Huaxia system, for example, is anarchic but also apparently hierarchical; the approach of pursuing security in understanding the rise of western powers may be meaningless, for the hegemony in the Huaxia System needn't worry about its security; the theory of power-balancing seemingly couldn' t explain why Qin ended up in defeating the alliance of the other six states in the Warring-states period. The Huaxia system is quite open, and has free movement of people, goods, and ideas. Some interstate regimes and institutions were formed through Huimeng (alliance-making) among states. However, this kind of limited and fragile interdependence and cooperation soon came to an end after the hegemonies of Qi, Jin and Wei. There does exit the identity problem among states in the Huaxia System, but this problem doesn't play such a great role as the constructivists expect it would.

  4. Abstracts of the Second energy conference of the Latin America and the Caribbean (ENERLAC'95)

    The Latin American Energy Organization (OLADE), with support from the Ministry of Energy and Mines of Ecuador, held the Second Energy Conference of Latin America and the Caribbean (ENERLAC 95) under the heading Energy Integration and Private-Sector Participation, essentially aimed at bringing together top public and private sector executives of latin america and the caribbean and entrepreneurs, investors, representatives of commercial banks and financial institutions to identify and concretize business opportunities and foster the energy integration of the region by identifying projects and investment opportunities in the sector. The present document is a reference work compiling the abstracts of the presentations that have been submitted and selected for ENERLAC 95. This publication provides a wide range of opinions and ideas about many energy sector topics

  5. ABSTRACTS

    2011-01-01

    A Preliminary Inquiry into the Intellectual Origins of Li Dazhao's My Idea of Marxism Abstract ;By translingual-textual comparison, this paper attempts to make a preliminary inquiry into the intellectual origins of Li Dazhao's My Idea of Marxism, suggesting that Li's article, instead of being "a complete copy" of the Japanese scholar

  6. Abstracts

    2011-01-01

    The Western Theories of War Ethics and Contemporary Controversies Li Xiaodong U Ruijing (4) [ Abstract] In the field of international relations, war ethics is a concept with distinct westem ideological color. Due to factors of history and reality, the in

  7. Abstract

    2012-01-01

    Cognitive Structure of Scientific Theory in the Scientist-Philosopher's Eyes、Two Theories of Scientific Abstraction Centered on Practices、Many-worlds Interpretation in Quantum Measurement and Its Meaning、Scientific Instrument: Paradigm Shift from Instrumentalism to Realism and Phenomenology

  8. Abstract

    Newton Carneiro Affonso da Costa Junior

    2003-01-01

    Full Text Available The present study has the objective of verifying if simultaneous investments in several international stock markets are more attractive than in only one national stock market, in other words, if the first ones present a superior risk-return relationship. It can be admitted that if there is a total integration among the analyzed countries, there is little advantage in the international diversification, but if the countries are less integrated, the diversification would bring advantages in risk-return terms. The empirical work is based on Markowitz portfolio theory, CAPM and in the portfolio performance measures of Sharpe, Treynor, and Jensen. The analysis was made for the period of February 1993 to January 2003, based in the most liquid stocks negotiated in the stock market of the main countries of Latin America. The results showed that portfolio diversification in international markets is a better approach.

  9. Abstracts

    2011-01-01

    [ Abstract ] The global resurgence of religion and the return of religion from the so-call "Westphalia Exile" to the central stage of international religions have significantly trans- formed the viewpoints of both media and academia toward the role of religion in IR, and the challenges posed by religion to the contemporary international relations are often described as entirely subversive. The author argues that as a second-tier factor in most countries' for- eign policies and international affairs,

  10. ABSTRACTS

    2012-01-01

    (1) Lenin's "Unity of Three Dialectics": Notes Science of Logic and The Capital on Philosophy in the Dual Contexts of Sun Zhengyu 4 Lenin's dialectics in Notes on Philosophy is essentially a unity of materialistic logic, dialectics and epistemology that has arisen from interactions between Hegel' s Science of Logic and Marx' s The Capital. Due to a lack of understanding of Lenin' s "unity of three dialectics," people tend to misunderstand his dialectics for the meeting of two extremes of the "sum total of living instances" and "abstract methods,

  11. ABSTRACT

    2011-01-01

    --Based on of Marx's Economic Philosophy Manuscripts of 1844 HE Jian-jin (Philosophy Department, Fujian Provincial Committee Party School, Fuzhou, Fujian 350012, China) Abstract: Socialism with Chinese characteristics has a close relationship with the return and growth of capital in China. To implement the scientific concept of development, we must confront the problem of scientifically controlling the capital. In Economic and Philosophical Manuscripts of 1844, Marx criticized the three old philosophical thinking of treating capital: Object-oriented thinking, intuitive thinking, purely spiritual abstract thinking, and he established his own unique understanding of the capital that is to understand the capital from the human perceptual activities and practical activities. Contemporary Chinese society exist the problem of underdevelopment and abnormal development, and the three heterogeneity problems of pre-modern, modern, postmodern concurrent. In order to implement the scientific concept of development, we must reject any abstract positive or negative to modern basic principles under the guidance of the capital, against the eternal capital theory and capital theory of evil, and we must oppose the thinking that the capital is eternal or evil. Key words: socialism with Chinese characteristics; capital; national economics; scientific concept of development

  12. ABSTRACTS

    2012-01-01

    On Rousseau's Equality and Freedom GONG Qun Abstract:Equality and freedom are the two core concepts of political philosophy and Rousseau~s political philosophy is no exception. Freedom and equality in Rousseau in- cludes two levels: natural state and social state under social contract, and among them, there is one state of un-equality. The relationship between the two concepts here is that equality is a necessary precondition of freedom, and that there is no equality, there is no freedom. The achievement of Rousseau~s equality is by one contractual behavior that all the members transfer their rights, especially property rights, and form of the Community. Freedom in Rousseau's mind is through the people's sovereignty in the Community to achieve freedom.

  13. ABSTRACTS

    2012-01-01

    The Relation between Individuals and Work Units in Stated-Owned Enterprises in Economic Transitional Pe- riod: Changes and their Influences Abstract: As a representation of extinction of work unit system, some dramatic changes have taken place on the rela- tion between individuals and work units in state-owned enterprises. Among many changes are the radical change of the way work unit stimulating and controlling its employees, the extinction of previous system supported by "work unit people", a tense relation between the employees and the work unit caused by the enterprise' s over-pursuit of performance. These changes result in such problems as grievous inequality, violation of personal interest, lack of mechanism for employees' voices and their low sense of belonging, which has brought unprecedented challenges for business administration and corpo- ration euhure development in China. Keywords: danwei/work unit; stimulate and control; relation between individuals and work units; work unit people

  14. ABSTRACTS

    2012-01-01

    Discussions of Design Highlights for Tailgas Treatment in Sulphuric Acid Plant Using New Technology for Flue Gas Desulfurization Through Catalytic Reduction LI Xin , CAO Long-wen , YIN Hua-qiang , El Yue-li , LI Jian-iun ( 1 ,College of Architecture and Environment, Sichuan University, Chengdu 610065, China;2 ,Daye Nonferrous Metals Co., Ltd., Huangshi 435000, China; 3 ,Tile Sixth Construction Company Ltd. of China National Chemical Engineering Corp., Xiangfan 441021, China) Abstract : For the present situation of tailgas treatment in current sulphuric acid plants and existing problems with commonly used technologies, the fun- damental working principle, process flow and reference project for a new technology for flue gas desulfurization through catalytic redaction which is used for tailgas treatment in a sulphuric acid plant and recovery of sulphur resource are outlined. The design highlights of this technology are analyzed and the are proposed. Compared to conventional technologies, this new technology offers high desulfurization efficiency and unique technology, which can effectively tackle the difficuhies of tailgas treatment in sulphuric acid plants after enforcement of the new standard. This new technology is thought to be significant economic benefit, environmental benefit, as well as a promising future of application.

  15. Abstracts

    2012-01-01

    Strategic Realism: An Option for China' s Grand Strategy Song Dexing (4) [ Abstract] As a non-Western emerging power, China should positively adapt its grand strategy to the strategic psychological traits in the 21st century, maintain a realist tone consistent with the national conditions of China, and avoid adventurist policies while awaring both strategic strength and weakness. In the 21st century, China' s grand strategy should be based on such core values as security, development, peace and justice, especially focusing on development in particular, which we named "strategic realism". Given the profound changes in China and the world, strategic realism encourages active foreign policy to safe- guard the long-term national interests of China. Following the self-help logic and the fun- damental values of security and prosperity, strategic realism concerns national interests as its top-priority. It advocates smart use of power, and aims to achieve its objectives by optimizing both domestic and international conditions. From the perspective of diplomatic phi- losophy, strategic realism is not a summarization of concrete policies but a description of China' s grand strategy orientations in the new century. [ Key Words] China, grand strategy, strategic realism [ Author]Song Dexing, Professor, Ph.D. Supervisor, and Director of the Center for International Strategic Studies, University of International Studies of PLA.

  16. Abstracts

    2012-01-01

    [Abstract] The essay analyzed the action logic of hegemon with a power approach. Hegemony can be classified as benign or malignant. A benign hegemon should be pro- ductive, inclusive and maintain procedure justice when it uses its power. The power of hegemon can be categorized into two types: the hard power, which is the use of coer- cion and payment and can be measured by public products, and the soft power, which shows the ability to attract and co-opt and can be measured by the relationship-specific investments. The relationship between the input of public products and the relationship -specific investments is not positively correlative. Confusing with the public products and the soft power might lead to strategic misleading. A country rich in power re- sources should comply with the following principles if it wanted to improve its hard power and soft power: first, analyze the scope of the existing hegemon's soft power and avoid investing public products in the scope; second, maintain honesty in a long term and continue to increase others' benefits following the rule of neutral Pareto im- provement; third, provide both public goods and public bads; fourth, be more patient to obtain soft power. [ Key Words] hegemon, soft power, relationship-specific investment, strategic misleading [Authors]Feng Weijiang, Ph.D., Associate Professor, Institute of World Economics and Politics, Chinese Academy of Social Science; Yu Jieya, Master, PBC Shanghai Headquarters.

  17. Boron

    The trace element boron (B) is of interest in reclamation situations for several reasons. It plays an essential through largely unidentified role in the growth of higher plants. In argronomic situations B deficiencies are common, and deficiencies in reclamation situations have been suggested but not documented. Among micronutrients, B is unique because the range from deficient concentrations to toxic concentrations either in the soil solution or in plant tissue is narrower than for any other micronutrient. In reclamation situations excessive amounts of B can occur in the soil or in near-surface mining wastes and thus interfere with reclamation objectives, especially in arid and semiarid regions. Also, B is mobile and appears subject to both upward transport (and possible contamination of overlying material) and downward transport (and possible contamination of surface water and groundwater)

  18. Boron

    This paper reports that borate minerals and refined borates are used extensively for the manufacture of vitreous materials such as insulation and textile fiberglasses, borosilicate glass, and porcelain enamels and frits. In North America, these applications are estimated to account for over 54% of the borate consumption. Other substantial uses are in soaps and detergents, metallurgy, fire retardants, industrial biocides, agriculture, and various miscellaneous applications. Reported domestic borate consumption in 1990 was estimated by the U.S. Bureau of Mines to be 320 000 metric tons B2O3 versus 354 000 metric tons B2O3 in 1989. Consumption is projected to remain essentially static in 1991. Imports were estimated by the Bureau to be 50 000 metric tons B2O3 in 1990. Exports of boric acid and refined borates were approximately 650 000 metric tons of product, a 15 000 metric ton increase from the 1989 level. This increase partially offsets the drop in the 1990 consumption level

  19. Seasonality in the coastal ocean of North America, 35°N - 48°N [abstract

    Strub, Ted; Smith, Robert

    1986-01-01

    EXTRACT (SEE PDF FOR FULL ABSTRACT): The seasonal cycles of coastal wind stress, adjusted sea level height (ASL), shelf currents and water temperatures off the west coast of North America (35°N to 48°N) were estimated by fitting annual and semiannual harmonics to data from 1981-1983. Longer records of monthly ASL indicate that these two harmonics adequately represent the long-term monthly average seasonal cycle, and that the current measurement period is long enough to define the seasonal...

  20. Proceedings of the Seminar on Management Options for Low and Intermediate-Level Wastes in Latin America - Abstracts

    The solutions adapted for management problems on radioactive wastes of nuclear installations and contamined materials generated in hospitals, research centers, laboratories in the countries of Latin America are presented. The criteria of site selection for radioactive waste installation and the methods for treating and storage are evaluated. The results of inspections in installations which handle radioactive wastes are done.(M.C.K.)

  1. 南美硫酸镁型硼锂盐湖综合利用技术评述%Comprehensive Utilization Review of Magnesium Sulfate Type Salt Lake which Enrich in Boron and Lithium in South America

    刘海明; 李宏灿; 杨建元; 李陇岗

    2011-01-01

    Development of sulfate type saline resource is mainly potassium-based resources in the world, the other resources is supplemented by the comprehensive development such as boron,bromine, lithium. South America Salt Lake to develop the most representative. The distribution of magnesium sulfate type salt lake of boron and lithium resources was described in south America in this paper, especially boron and lithium resource was elaborated in detail. The current status of comprehensive development and utilization of magnesium sulfate type saline resource were reviewed.At last, several suggestions on rational resource allocation and sustainable utilization Magnesium sulfate subtype saline resource were put forward.%世界硫酸镁型盐湖资源的开发是以钾资源利用为主,硼、溴、锂等其它资源综合开采为辅,以南美盐湖开发最具代表性.概述了南美硫酸镁型硼锂盐湖资源的分布特征,对其含硼锂盐湖资源进行了详细的阐述,并对目前综合开发利用技术做了评述,最后为硫酸镁型盐湖资源的合理配置、综合开发利用等问题提出了一些建议.

  2. Boron Fullerenes: A First-Principles Study

    Gonzalez Szwacki Nevill

    2007-01-01

    Full Text Available AbstractA family of unusually stable boron cages was identified and examined using first-principles local-density functional method. The structure of the fullerenes is similar to that of the B12icosahedron and consists of six crossing double-rings. The energetically most stable fullerene is made up of 180 boron atoms. A connection between the fullerene family and its precursors, boron sheets, is made. We show that the most stable boron sheets are not necessarily precursors of very stable boron cages. Our finding is a step forward in the understanding of the structure of the recently produced boron nanotubes.

  3. Electroextraction of boron from boron carbide scrap

    Jain, Ashish [Chemistry Group, Indira Gandhi Centre for Atomic Research, Kalpakkam – 603102 (India); Anthonysamy, S., E-mail: sas@igcar.gov.in [Chemistry Group, Indira Gandhi Centre for Atomic Research, Kalpakkam – 603102 (India); Ghosh, C. [Physical Metallurgy Group, Indira Gandhi Centre for Atomic Research, Kalpakkam – 603102 (India); Ravindran, T.R. [Materials Science Group, Indira Gandhi Centre for Atomic Research, Kalpakkam – 603102 (India); Divakar, R.; Mohandas, E. [Physical Metallurgy Group, Indira Gandhi Centre for Atomic Research, Kalpakkam – 603102 (India)

    2013-10-15

    Studies were carried out to extract elemental boron from boron carbide scrap. The physicochemical nature of boron obtained through this process was examined by characterizing its chemical purity, specific surface area, size distribution of particles and X-ray crystallite size. The microstructural characteristics of the extracted boron powder were analyzed by using scanning electron microscopy and transmission electron microscopy. Raman spectroscopic examination of boron powder was also carried out to determine its crystalline form. Oxygen and carbon were found to be the major impurities in boron. Boron powder of purity ∼ 92 wt. % could be produced by the electroextraction process developed in this study. Optimized method could be used for the recovery of enriched boron ({sup 10}B > 20 at. %) from boron carbide scrap generated during the production of boron carbide. - Highlights: • Recovery of {sup 10}B from nuclear grade boron carbide scrap • Development of process flow sheet • Physicochemical characterization of electroextracted boron • Microscopic examination of electroextracted boron.

  4. Electroextraction of boron from boron carbide scrap

    Studies were carried out to extract elemental boron from boron carbide scrap. The physicochemical nature of boron obtained through this process was examined by characterizing its chemical purity, specific surface area, size distribution of particles and X-ray crystallite size. The microstructural characteristics of the extracted boron powder were analyzed by using scanning electron microscopy and transmission electron microscopy. Raman spectroscopic examination of boron powder was also carried out to determine its crystalline form. Oxygen and carbon were found to be the major impurities in boron. Boron powder of purity ∼ 92 wt. % could be produced by the electroextraction process developed in this study. Optimized method could be used for the recovery of enriched boron (10B > 20 at. %) from boron carbide scrap generated during the production of boron carbide. - Highlights: • Recovery of 10B from nuclear grade boron carbide scrap • Development of process flow sheet • Physicochemical characterization of electroextracted boron • Microscopic examination of electroextracted boron

  5. Proceedings of workshop on 'boron science and boron neutron capture therapy'

    Kitaoka, Y. [ed.

    1998-12-01

    This volume contains the abstracts and programs of the 8th (1996), 9th (1997) and 10th (1998) of the workshop on 'the Boron Science and Boron Neutron Capture Therapy' and the recent progress reports especially subscribed. The 11 of the presented papers are indexed individually. (J.P.N.)

  6. Determination of boron content in boron carbide, boron nitride and amorphous boron

    In the present article an analyzing method of determination of boron content in boron carbide, boron nitride and amorphous boron described. Examined samples were digested with potassium hydroxide and potassium nitrate in nickel crucible and the boron contents determined subsequently by an alcalimetric titration of boric acid in presence of mannite resp. sorbite. (author)

  7. Abstract algebra

    Deskins, W E

    1996-01-01

    This excellent textbook provides undergraduates with an accessible introduction to the basic concepts of abstract algebra and to the analysis of abstract algebraic systems. These systems, which consist of sets of elements, operations, and relations among the elements, and prescriptive axioms, are abstractions and generalizations of various models which evolved from efforts to explain or discuss physical phenomena.In Chapter 1, the author discusses the essential ingredients of a mathematical system, and in the next four chapters covers the basic number systems, decompositions of integers, diop

  8. Influence of Boron on transformation behavior during continuous cooling of low alloyed steels

    Terzic, A., E-mail: Adnan.Terzic@imf.tu-freiberg.de [Technische Universität Bergakademie Freiberg, Institute of Metal Forming, Bernhard-von-Cotta-Str. 4, 09596 Freiberg (Germany); Calcagnotto, M. [Salzgitter Mannesmann Forschung GmbH, Eisenhüttenstr. 99, 38239 Salzgitter (Germany); Guk, S. [Technische Universität Bergakademie Freiberg, Institute of Metal Forming, Bernhard-von-Cotta-Str. 4, 09596 Freiberg (Germany); Schulz, T. [Salzgitter Mannesmann Forschung GmbH, Eisenhüttenstr. 99, 38239 Salzgitter (Germany); Kawalla, R. [Technische Universität Bergakademie Freiberg, Institute of Metal Forming, Bernhard-von-Cotta-Str. 4, 09596 Freiberg (Germany)

    2013-11-01

    Abstracts: The phase transformation behavior during continuous cooling of low-carbon (LC) Boron-treated steels was studied. Furthermore, the influence of combining Boron with Nb or Ti or V on transformation kinetics was investigated. Additions of Boron to LC steels have a strong influence on the ferrite transformation. By adding 30 ppm Boron to a Boron-free reference alloy the suppressing effect on the ferrite transformation is most pronounced, whereas 10 ppm Boron has almost no effect and 50 ppm Boron the same effect as 30 ppm Boron. Thereby the critical Boron concentration for transformation kinetics in this alloying concept is 30 ppm. The combination of Boron with Ti shifts the phase fields to shorter times and increase the ferrite start temperature, whereas the combination of B+V and B+Nb only affects the ferrite start temperature. Hardness values are mostly influenced by the presence of Boron and strongly depend on the cooling rate.

  9. Elementary boron and metal-boron compounds

    Elementary boron is of interest for its peculiar and difficult bonding behaviour in solids. Due to its high oxygen affinity we find no elementary boron in nature. For the same reason it is difficult to isolate pure, elementary boron, and much confusion about 'boron crystals' has been the result of more than 100 years of research. The polymorphic forms of elementary boron and its closely related higher carbides and higher metal borides as well as the simple metal borides, B3C and BN are reported. The quantum-mechanical background responsible for structure and stoichiometry of these crystals is given. (orig.)

  10. INVENTORY ABSTRACTION

    G. Ragan

    2001-12-19

    The purpose of the inventory abstraction, which has been prepared in accordance with a technical work plan (CRWMS M&O 2000e for ICN 02 of the present analysis, and BSC 2001e for ICN 03 of the present analysis), is to: (1) Interpret the results of a series of relative dose calculations (CRWMS M&O 2000c, 2000f). (2) Recommend, including a basis thereof, a set of radionuclides that should be modeled in the Total System Performance Assessment in Support of the Site Recommendation (TSPA-SR) and the Total System Performance Assessment in Support of the Final Environmental Impact Statement (TSPA-FEIS). (3) Provide initial radionuclide inventories for the TSPA-SR and TSPA-FEIS models. (4) Answer the U.S. Nuclear Regulatory Commission (NRC)'s Issue Resolution Status Report ''Key Technical Issue: Container Life and Source Term'' (CLST IRSR) key technical issue (KTI): ''The rate at which radionuclides in SNF [spent nuclear fuel] are released from the EBS [engineered barrier system] through the oxidation and dissolution of spent fuel'' (NRC 1999, Subissue 3). The scope of the radionuclide screening analysis encompasses the period from 100 years to 10,000 years after the potential repository at Yucca Mountain is sealed for scenarios involving the breach of a waste package and subsequent degradation of the waste form as required for the TSPA-SR calculations. By extending the time period considered to one million years after repository closure, recommendations are made for the TSPA-FEIS. The waste forms included in the inventory abstraction are Commercial Spent Nuclear Fuel (CSNF), DOE Spent Nuclear Fuel (DSNF), High-Level Waste (HLW), naval Spent Nuclear Fuel (SNF), and U.S. Department of Energy (DOE) plutonium waste. The intended use of this analysis is in TSPA-SR and TSPA-FEIS. Based on the recommendations made here, models for release, transport, and possibly exposure will be developed for the isotopes that would be the highest

  11. Friction anisotropy in boronated graphite

    Kumar, N., E-mail: niranjan@igcar.gov.in [Materials Science Group, Indira Gandhi Centre for Atomic Research, Kalpakkam (India); Radhika, R. [Crystal Growth Centre, Anna University, Chennai (India); Kozakov, A.T. [Research Institute of Physics, Southern Federal University, Rostov-on-Don (Russian Federation); Pandian, R. [Materials Science Group, Indira Gandhi Centre for Atomic Research, Kalpakkam (India); Chakravarty, S. [UGC-DAE CSR, Kalpakkam (India); Ravindran, T.R.; Dash, S.; Tyagi, A.K. [Materials Science Group, Indira Gandhi Centre for Atomic Research, Kalpakkam (India)

    2015-01-01

    Graphical abstract: - Highlights: • Friction anisotropy in boronated graphite is observed in macroscopic sliding condition. • Low friction coefficient is observed in basal plane and becomes high in prismatic direction. • 3D phase of boronated graphite transformed into 2D structure after friction test. • Chemical activity is high in prismatic plane forming strong bonds between the sliding interfaces. - Abstract: Anisotropic friction behavior in macroscopic scale was observed in boronated graphite. Depending upon sliding speed and normal loads, this value was found to be in the range 0.1–0.35 in the direction of basal plane and becomes high 0.2–0.8 in prismatic face. Grazing-incidence X-ray diffraction analysis shows prominent reflection of (0 0 2) plane at basal and prismatic directions of boronated graphite. However, in both the wear tracks (1 1 0) plane become prominent and this transformation is induced by frictional energy. The structural transformation in wear tracks is supported by micro-Raman analysis which revealed that 3D phase of boronated graphite converted into a disordered 2D lattice structure. Thus, the structural aspect of disorder is similar in both the wear tracks and graphite transfer layers. Therefore, the crystallographic aspect is not adequate to explain anisotropic friction behavior. Results of X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy shows weak signature of oxygen complexes and functional groups in wear track of basal plane while these species dominate in prismatic direction. Abundance of these functional groups in prismatic plane indicates availability of chemically active sites tends to forming strong bonds between the sliding interfaces which eventually increases friction coefficient.

  12. Friction anisotropy in boronated graphite

    Graphical abstract: - Highlights: • Friction anisotropy in boronated graphite is observed in macroscopic sliding condition. • Low friction coefficient is observed in basal plane and becomes high in prismatic direction. • 3D phase of boronated graphite transformed into 2D structure after friction test. • Chemical activity is high in prismatic plane forming strong bonds between the sliding interfaces. - Abstract: Anisotropic friction behavior in macroscopic scale was observed in boronated graphite. Depending upon sliding speed and normal loads, this value was found to be in the range 0.1–0.35 in the direction of basal plane and becomes high 0.2–0.8 in prismatic face. Grazing-incidence X-ray diffraction analysis shows prominent reflection of (0 0 2) plane at basal and prismatic directions of boronated graphite. However, in both the wear tracks (1 1 0) plane become prominent and this transformation is induced by frictional energy. The structural transformation in wear tracks is supported by micro-Raman analysis which revealed that 3D phase of boronated graphite converted into a disordered 2D lattice structure. Thus, the structural aspect of disorder is similar in both the wear tracks and graphite transfer layers. Therefore, the crystallographic aspect is not adequate to explain anisotropic friction behavior. Results of X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy shows weak signature of oxygen complexes and functional groups in wear track of basal plane while these species dominate in prismatic direction. Abundance of these functional groups in prismatic plane indicates availability of chemically active sites tends to forming strong bonds between the sliding interfaces which eventually increases friction coefficient

  13. Effect of metal hydrides on the burning characteristics of boron

    Highlights: • The effect of some metal hydrides on the burning characteristics of boron is studied for the first time. • We are the first to conduct a TG experiment on boron samples at high temperatures (a maximum of 1750 °C). • The thermal reaction process of boron is firstly divided into five stages according to the weight gain rate of the sample. • Specific values of metal hydrides on ignition delay time and combustion intensity of boron are obtained. - Abstract: In this study, the effect of four metal hydrides on the burning characteristics of boron was investigated. Thermogravimetric experiment results show that the thermal reaction process of boron samples can be divided into five stages. The thermal reactions of boron can be significantly promoted with LiH, which can reduce the initial temperature of the first violent reaction stage by ∼140 °C. The starting temperature of the post-reaction stage also decreases by ∼260 °C. The results of the laser ignition experiment suggest that all four metal hydrides can promote boron burning. Nonetheless, different metal hydrides display varied promotional effects. Among the studied hydrides, LiH is the most effective additive and shortens the ignition delay time of boron by ∼34.1%. Moreover, it enhances the combustion intensity of boron by ∼117.6%. The other three metal hydrides (CaH2, TiH2, and ZrH2) can also contribute to boron burning

  14. BALWOIS: Abstracts

    anthropogenic pressures and international shared water. Here are the 320 abstracts proposed by authors and accepted by the Scientific Committee. More than 200 papers are presented during the Conference on 8 topics related to Hydrology, Climatology and Hydro biology: - Climate and Environment; - Hydrological regimes and water balances; - Droughts and Floods; -Integrated Water Resources Management; -Water bodies Protection and Eco hydrology; -Lakes; -Information Systems for decision support; -Hydrological modelling. Papers relevant to INIS are indexed separately

  15. Sputtering behavior of boron and boron carbide

    Sputtering yields of boron were measured with D+ and B+ ions for normal and oblique angles of incidence. Self-sputtering data of boron carbide were simulated in the experiment by using Ne+ ions. The energies of the impinging ions were between 20 eV and 10 keV. The measured data are compared with computer simulated values calculated with the TRIMSP program. The boron data for normal ion impact are higher than the calculated values, whereas those for oblique ion incidence are smaller than the calculation predicts. This discrepancy is explained by the surface roughness and supported by SEM micrographs. The comparison of the boron carbide data with TRIMSP calculations shows much better agreement than the boron data. In this case the target surface was much smoother. (orig.)

  16. Boron nitride converted carbon fiber

    Rousseas, Michael; Mickelson, William; Zettl, Alexander K.

    2016-04-05

    This disclosure provides systems, methods, and apparatus related to boron nitride converted carbon fiber. In one aspect, a method may include the operations of providing boron oxide and carbon fiber, heating the boron oxide to melt the boron oxide and heating the carbon fiber, mixing a nitrogen-containing gas with boron oxide vapor from molten boron oxide, and converting at least a portion of the carbon fiber to boron nitride.

  17. Multi-dimensional boron transport modeling in subchannel approach: Part II. Validation of CTF boron tracking model and adding boron precipitation model

    Highlights: • Validation of implemented multi-dimensional subchannel boron transport model. • Extension of boron transport model to entrained droplets. • Implementation of boron precipitation model. • Testing of the boron precipitation model under transient condition. - Abstract: The risk of small-break loss of coolant accident (SB-LOCA) and other reactivity initiated transients caused by boron dilution in the light water reactors (LWRs), and the complications of tracking the soluble boron concentration experimentally inside the primary coolant have stimulated the interest in computational studies for accurate boron tracking simulations in nuclear reactors. In Part I of this study, the development and implementation of a multi-dimensional boron transport model with modified Godunov scheme based on a subchannel approach within the COBRA-TF (CTF) thermal-hydraulic code was presented. The modified Godunov scheme approach with a physical diffusion term was determined to provide the most accurate and precise solution. Current paper extends these conclusions and presents the model validation studies against experimental data from the Rossendorf coolant mixing model (ROCOM) test facility. In addition, the importance of the two-phase flow characteristics in modeling boron transient are emphasized, especially during long-term cooling period after the loss of coolant accident (LOCA) condition in pressurized water reactors (PWRs). The CTF capabilities of boron transport modeling are further improved based on the three-field representation of the two-phase flow utilized in the code. The boron transport within entrained droplets is modeled, and a model for predicting the boron precipitation under transient conditions is developed and tested. It is aimed to extend the applicability of CTF to reactor transient simulations, and particularly to a large-break loss of coolant accident (LB-LOCA) analysis

  18. Mass spectrometric determination of boron isotope in boron carbide

    Boron isotopes in boron carbide are measured by thermionic ionization mass spectrometry with no prior chemical separation. Boron is converted to sodium borate by fusion of the boron carbide with sodium hydroxide (or sodium carbonate) directly on the rhenium filament. The boron isotopic ratios are measured by using the Na2BO2+ ion

  19. Determination of boron and silicon in boron carbide

    A sodium carbonate fusion technique for the dissolution of boron carbide followed by the determination of boron by alkalimetric titration and silicon impurity by spectrophotometry is described. The elemental boron content in the commercially available boron carbide ranged from 77.2 to 77.60 % and the silicon in the range 1170 to 2500 ppm. (author)

  20. Functionalized boron-dipyrromethenes and their applications

    M. Ravikanth, M; Vellanki,Lakshmi; Sharma,Ritambhara

    2016-01-01

    Vellanki Lakshmi, Ritambhara Sharma, Mangalampalli Ravikanth Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, IndiaAbstract: Boron-dipyrromethenes/BF2-dipyrrins (BODIPYs) are highly fluorescent dyes with a wide range of applications in various fields because of their attractive photophysical properties. One of the salient features of BODIPYs is that the properties of the BODIPY can be fine-tuned at will by selectively introducing the substituent(s) at the desired locati...

  1. First boronization in KSTAR

    Hong, S.H., E-mail: sukhhong@nfri.re.kr [National Fusion Research Institute, 113 Gwahangno, Yusung-Gu, Daejeon 305-333 (Korea, Republic of); Center for Edge Plasma Science (cEps), Hanyang University, Seoul 133-791 (Korea, Republic of); Lee, K.S.; Kim, K.M.; Kim, H.T.; Kim, G.P. [National Fusion Research Institute, 113 Gwahangno, Yusung-Gu, Daejeon 305-333 (Korea, Republic of); Sun, J.H.; Woo, H.J. [Department of Electrical Engineering, Hanyang University, Seoul 133-791 (Korea, Republic of); Center for Edge Plasma Science (cEps), Hanyang University, Seoul 133-791 (Korea, Republic of); Park, J.M.; Kim, W.C.; Kim, H.K.; Park, K.R.; Yang, H.L.; Na, H.K. [National Fusion Research Institute, 113 Gwahangno, Yusung-Gu, Daejeon 305-333 (Korea, Republic of); Chung, K.S. [Department of Electrical Engineering, Hanyang University, Seoul 133-791 (Korea, Republic of); Center for Edge Plasma Science (cEps), Hanyang University, Seoul 133-791 (Korea, Republic of)

    2010-11-15

    First boronization in KSTAR is reported. KSTAR boronization system is based on a carborane (C{sub 2}B{sub 10}H{sub 12}) injection system. The design, construction, and test of the system are accomplished and it is tested by using a small vacuum vessel before it is mounted to a KSTAR port. After the boronization in KSTAR, impurity levels are significantly reduced by factor of 3 (oxygen) and by 10 (carbon). Characteristics of a-C/B:H thin films deposited by carborane vapor are investigated. Re-condensation of carborane vapor during the test phase has been reported.

  2. Piaget on Abstraction.

    Moessinger, Pierre; Poulin-Dubois, Diane

    1981-01-01

    Reviews and discusses Piaget's recent work on abstract reasoning. Piaget's distinction between empirical and reflective abstraction is presented; his hypotheses are considered to be metaphorical. (Author/DB)

  3. Programme and abstracts

    Abstracts of 25 papers presented at the congress are given. The abstracts cover various topics including radiotherapy, radiopharmaceuticals, radioimmunoassay, health physics, radiation protection and nuclear medicine

  4. Boron in sillimanite.

    Grew, E S; Hinthorne, J R

    1983-08-01

    Sillimanite in six granulite-facies, kornerupine-bearing rocks contains 0.035 to 0.43 percent B(2)O(3) and 0.02 to 0.23 percent MgO (by weight). Substitution of boron for silicon and magnesium for aluminum is coupled such that the ratio of magnesium to boron is about 0.5. Sillimanite incorporates more than 0.1 percent B(2)O(3) only at high temperatures in a boron-rich environment at very low partial pressures of water. In the amphibolite facies, the sillimanite boron contents are too low to appreciably affect the stability relations of sillimanite with kyanite and andalusite. PMID:17830955

  5. Boron nitride composites

    Kuntz, Joshua D.; Ellsworth, German F.; Swenson, Fritz J.; Allen, Patrick G.

    2016-02-16

    According to one embodiment, a composite product includes hexagonal boron nitride (hBN), and a plurality of cubic boron nitride (cBN) particles, wherein the plurality of cBN particles are dispersed in a matrix of the hBN. According to another embodiment, a composite product includes a plurality of cBN particles, and one or more borate-containing binders.

  6. PERMEABLE REACTIVE BARRIER STRATEGIES FOR REMEDIATION OF ARSENIC-CONTAMINATED GROUNDWATER: ABSTRACT

    NRMRL-ADA-01152 Wilkin*, R.T., and Paul*, C.J. "Permeable Reactive Barrier Strategies for Remediation of Arsenic- Contaminated Groundwater." In: Geological Society of America, Abstracts with programs., Geological Society of America Annua...

  7. Graphitized boron-doped carbon foams: Performance as anodes in lithium-ion batteries

    Highlights: → Because of the catalytic effect of boron, graphite-like foams were prepared. → The presence of substitutional boron in carbon foams improves their anodic performance. → The graphitized boron-doped foams provide reversible capacities of 310 mA h g-1. - Abstract: The electrochemical performance as potential anodes in lithium-ion batteries of several boron-doped and non-doped graphitic foams with different degree of structural order was investigated by galvanostatic cycling. The boron-doped foams were prepared by the co-pyrolysis of a coal and two boron sources (boron oxide and a borane-pyridine complex), followed by heat treatment in the 2400-2800 deg. C temperature interval. The extent of the graphitization process of the carbon foams depends on boron concentration and source. Because of the catalytic effect of boron, lightweight graphite-like foams were prepared. Boron in the foams was found to be present as carbide (B4C), in substitutional positions in the carbon lattice (B-C), bonded to nitrogen (B-N) and forming clusters. Larger reversible lithium storage capacities with values up to ∼310 mA h g-1 were achieved by using the boron oxide-based carbon foams. Moreover, since the electrochemical anodic performance of these boron-doped foams with different degree of structural order is similar, the beneficial effect of the presence of the B-C boron phase was inferred. However, the bonding of boron with nitrogen in the pyridine borane-based has a negative effect on lithium intercalation.

  8. Boronated liposome development and evaluation

    Hawthorne, M.F. [Univ. of California, Los Angeles, CA (United States)

    1995-11-01

    The boronated liposome development and evaluation effort consists of two separate tasks. The first is the development of new boron compounds and the synthesis of known boron species with BNCT potential. These compounds are then encapsulated within liposomes for the second task, biodistribution testing in tumor-bearing mice, which examines the potential for the liposomes and their contents to concentrate boron in cancerous tissues.

  9. Program and abstracts

    Abstracts of the papers given at the conference are presented. The abstracts are arranged under sessions entitled:Theoretical Physics; Nuclear Physics; Solid State Physics; Spectroscopy; Physics Education; SANCGASS; Astronomy; Plasma Physics; Physics in Industry; Applied and General Physics

  10. Magnetron sputter deposition of boron and boron carbide

    The fabrication of X-ray optical coatings with greater reflectivity required the development of sputter deposition processes for boron and boron carbide. The use of high density boron and boron carbide (B4C) and a vacuum-brazed target design was required to achieve the required sputter process stability and resistance to the thermal stress created by high rate sputtering. Our results include a description of the target fabrication procedures and sputter process parameters necessary to fabricate B4C and boron modulated thin film structures. (orig.)

  11. Facile Synthesis of Ternary Boron Carbonitride Nanotubes

    Luo Lijie

    2009-01-01

    Full Text Available Abstract In this study, a novel and facile approach for the synthesis of ternary boron carbonitride (B–C–N nanotubes was reported. Growth occurred by heating simple starting materials of boron powder, zinc oxide powder, and ethanol absolute at 1150 °C under a mixture gas flow of nitrogen and hydrogen. As substrate, commercial stainless steel foil with a typical thickness of 0.05 mm played an additional role of catalyst during the growth of nanotubes. The nanotubes were characterized by SEM, TEM, EDX, and EELS. The results indicate that the synthesized B–C–N nanotubes exhibit a bamboo-like morphology and B, C, and N elements are homogeneously distributed in the nanotubes. A catalyzed vapor–liquid–solid (VLS mechanism was proposed for the growth of the nanotubes.

  12. Introduction to abstract algebra

    Nicholson, W Keith

    2012-01-01

    Praise for the Third Edition ". . . an expository masterpiece of the highest didactic value that has gained additional attractivity through the various improvements . . ."-Zentralblatt MATH The Fourth Edition of Introduction to Abstract Algebra continues to provide an accessible approach to the basic structures of abstract algebra: groups, rings, and fields. The book's unique presentation helps readers advance to abstract theory by presenting concrete examples of induction, number theory, integers modulo n, and permutations before the abstract structures are defined. Readers can immediately be

  13. Boron site preference in ternary Ta and Nb boron silicides

    X-ray single crystal (XSC) and neutron powder diffraction data (NPD) were used to elucidate boron site preference for five ternary phases. Ta3Si1−xBx (x=0.112(4)) crystallizes with the Ti3P-type (space group P42/n) with B-atoms sharing the 8g site with Si atoms. Ta5Si3−x (x=0.03(1); Cr5B3- type) crystallizes with space group I4/mcm, exhibiting a small amount of vacancies on the 4a site. Both, Ta5(Si1−xBx)3, x=0.568(3), and Nb5(Si1−xBx)3, x=0.59(2), are part of solid solutions of M5Si3 with Cr5B3-type into the ternary M–Si–B systems (M=Nb or Ta) with B replacing Si on the 8h site. The D88-phase in the Nb–Si–B system crystallizes with the Ti5Ga4-type revealing the formula Nb5Si3B1−x (x=0.292(3)) with B partially filling the voids in the 2b site of the Mn5Si3 parent type. - Graphical abstract: The crystal structures of a series of compounds have been solved from X-ray single crystal diffractometry revealing details on the boron incorporation. Highlights: ► Structure of a series of compounds have been solved by X-ray single crystal diffractometry. ► Ta3(Si1−xBx) (x=0.112) crystallizes with the Ti3P-type, B and Si atoms randomly share the 8g site. ► Structure of Nb5Si3B1−x (x=0.292; Ti5Ga4-type) was solved from NPD.

  14. Structural Modification in Carbon Nanotubes by Boron Incorporation

    Handuja Sangeeta

    2009-01-01

    Full Text Available Abstract We have synthesized boron-incorporated carbon nanotubes (CNTs by decomposition of ferrocene and xylene in a thermal chemical vapor deposition set up using boric acid as the boron source. Scanning and transmission electron microscopy studies of the synthesized CNT samples showed that there was deterioration in crystallinity and improvement in alignment of the CNTs as the boron content in precursor solution increased from 0% to 15%. Raman analysis of these samples showed a shift of ~7 cm−1in wave number to higher side and broadening of the G band with increasing boron concentration along with an increase in intensity of the G band. Furthermore, there was an increase in the intensity of the D band along with a decrease in its wave number position with increase in boron content. We speculate that these structural modifications in the morphology and microstructure of CNTs might be due to the charge transfer from boron to the graphite matrix, resulting in shortening of the carbon–carbon bonds.

  15. Boron cures cancer

    In this work the authors cite a few examples of the use of radiopharmaceuticals for diagnostic and therapeutic purposes in nuclear medicine. They point to the possibility of boron neutron capture therapy and the use for the neutron capture therapy of other light elements.

  16. Boron contamination in drinking - irrigation water and boron removal methods

    Meltem Bilici Başkan

    2014-03-01

    Full Text Available Boron presents in IIIA group of periodic table and has high ionization capacity. Therefore it is classified as a metalloid. Average boron concentration in earth's crust is 10 mg/kg. It presents in the environment as a salts of Ca, Na, and Mg. Boron reserves having high concentration and economical extent are found mostly in Turkey and in arid, volcanic and high hydrothermal activity regions of U.S. as compounds of boron attached to oxygen. Boron is an essential micronutrient for plants, although it may be toxic at higher levels. The range in which it is converted from a nutrient to a contaminant is quite narrow. Boron presents in water environment as a boric acid and rarely borate salts. The main boron sources, whose presence is detected in surface waters, are urban wastes and industrial wastes, which can come from a wide range of different activities as well as several chemical products used in agriculture. In Turkey, the most pollutant toxic element in drinking and irrigation water is boron. Therefore boron removal is very important in terms of human health and agricultural products in high quality. Mainly boron removal methods from drinking water and irrigation water are ion exchange, ultrafiltration, reverse osmosis, and adsorption.

  17. Process for microwave sintering boron carbide

    A method of microwave sintering boron carbide comprises leaching boron carbide powder with an aqueous solution of nitric acid to form a leached boron carbide powder. The leached boron carbide powder is coated with a glassy carbon precursor to form a coated boron carbide powder. The coated boron carbide powder is consolidated in an enclosure of boron nitride particles coated with a layer of glassy carbon within a container for microwave heating to form an enclosed coated boron carbide powder. The enclosed coated boron carbide powder is sintered within the container for microwave heating with microwave energy

  18. Methods of producing continuous boron carbide fibers

    Garnier, John E.; Griffith, George W.

    2015-12-01

    Methods of producing continuous boron carbide fibers. The method comprises reacting a continuous carbon fiber material and a boron oxide gas within a temperature range of from approximately 1400.degree. C. to approximately 2200.degree. C. Continuous boron carbide fibers, continuous fibers comprising boron carbide, and articles including at least a boron carbide coating are also disclosed.

  19. Building America

    Brad Oberg

    2010-12-31

    IBACOS researched the constructability and viability issues of using high performance windows as one component of a larger approach to building houses that achieve the Building America 70% energy savings target.

  20. Nuclear medicine. Abstracts; Nuklearmedizin 2000. Abstracts

    Anon.

    2000-07-01

    This issue of the journal contains the abstracts of the 183 conference papers as well as 266 posters presented at the conference. Subject fields covered are: Neurology, psychology, oncology, pediatrics, radiopharmacy, endocrinology, EDP, measuring equipment and methods, radiological protection, cardiology, and therapy. (orig./CB) [German] Die vorliegende Zeitschrift enthaelt die Kurzfassungen der 183 auf der Tagung gehaltenen Vortraege sowie der 226 praesentierten Poster, die sich mit den folgenden Themen befassten: Neurologie, Psychiatrie, Onkologie, Paediatrie, Radiopharmazie, Endokrinologie, EDV, Messtechnik, Strahlenschutz, Kardiologie sowie Therapie. (MG)

  1. Journalism Abstracts. Vol. 15.

    Popovich, Mark N., Ed.

    This book, the fifteenth volume of an annual publication, contains 373 abstracts of 52 doctoral and 321 master's theses from 50 colleges and universities. The abstracts are arranged alphabetically by author, with the doctoral dissertations appearing first. These cover such topics as advertising, audience analysis, content analysis of news issues…

  2. Completeness of Lyapunov Abstraction

    Wisniewski, Rafal; Sloth, Christoffer

    This paper addresses the generation of complete abstractions of polynomial dynamical systems by timed automata. For the proposed abstraction, the state space is divided into cells by sublevel sets of functions. We identify a relation between these functions and their directional derivatives along...

  3. Designing for Mathematical Abstraction

    Pratt, Dave; Noss, Richard

    2010-01-01

    Our focus is on the design of systems (pedagogical, technical, social) that encourage mathematical abstraction, a process we refer to as "designing for abstraction." In this paper, we draw on detailed design experiments from our research on children's understanding about chance and distribution to re-present this work as a case study in designing…

  4. Program and abstracts

    Abstracts of the papers given at the conference are presented. The abstracts are arranged under sessions entitled: Theoretical Physics; Nuclear Physics; Solid State Physics; Spectroscopy; Plasma Physics; Solar-Terrestrial Physics; Astrophysics and Astronomy; Radioastronomy; General Physics; Applied Physics; Industrial Physics

  5. Boron reinforced composites. 1976-April 1980 (citations from the NTIS Data Base). Report for 1976-April 1980

    Cavagnaro, D.M.

    1980-05-01

    The bibliography cites Federally-funded research on boron fibers and boron compounds used as reinforcing material in composites. Included are studies on fabrication, testing, uses, and structural and mechanical properties. (This updated bibliography contains 255 abstracts, 19 of which are new entries to the previous edition.)

  6. Computational Abstraction Steps

    Thomsen, Lone Leth; Thomsen, Bent; Nørmark, Kurt

    2010-01-01

    In this paper we discuss computational abstraction steps as a way to create class abstractions from concrete objects, and from examples. Computational abstraction steps are regarded as symmetric counterparts to computational concretisation steps, which are well-known in terms of function calls and...... capturing concrete values, objects, or actions. As the next step, some of these are lifted to a higher level by computational means. In the object-oriented paradigm the target of such steps is classes. We hypothesise that the proposed approach primarily will be beneficial to novice programmers or during the...

  7. Sintered boron, production and properties

    Microhardness HV, tensile properties and Young modulus of sintered boron of different porosity were studied. It was shown that with density growth tensile properties improve. HV and brittle-ductile transition temperature Tsub(b) of sintered boron on the one hand and for silicon and titanium carbide on the other were compared and discussed. It was noted that the general level of HV and Tsub(b) for boron is rather high and at similar relative temperatures these characteristics are much higher. Temperature dependences of linear expansion coefficient, thermal capacity, thermal and temperature conductivity of sintered boron of 20% porosity were studied. Gruneisen parameter was evaluated

  8. Fivefold twinned boron carbide nanowires.

    Fu, Xin; Jiang, Jun; Liu, Chao; Yuan, Jun

    2009-09-01

    Chemical composition and crystal structure of fivefold twinned boron carbide nanowires have been determined by electron energy-loss spectroscopy and electron diffraction. The fivefold cyclic twinning relationship is confirmed by systematic axial rotation electron diffraction. Detailed chemical analysis reveals a carbon-rich boron carbide phase. Such boron carbide nanowires are potentially interesting because of their intrinsic hardness and high temperature thermoelectric property. Together with other boron-rich compounds, they may form a set of multiply twinned nanowire systems where the misfit strain could be continuously tuned to influence their mechanical properties. PMID:19687534

  9. Abstracts of SIG Sessions.

    Proceedings of the ASIS Annual Meeting, 1997

    1997-01-01

    Presents abstracts of SIG Sessions. Highlights include digital collections; information retrieval methods; public interest/fair use; classification and indexing; electronic publication; funding; globalization; information technology projects; interface design; networking in developing countries; metadata; multilingual databases; networked…

  10. 2016 ACPA MEETING ABSTRACTS.

    2016-07-01

    The peer-reviewed abstracts presented at the 73rd Annual Meeting of the ACPA are published as submitted by the authors. For financial conflict of interest disclosure, please visit http://meeting.acpa-cpf.org/disclosures.html. PMID:27447885

  11. ABSTRACTS AND KEY WORDS

    2011-01-01

    Influence of Fermented Product from Beneficial Microorganism on the Cultivation of Larvae Apostichopus japonicus Li Shuang et al(1) Abstract The fermented product from beneficial microorganism was applied in the seed rearing of sea cucumber.The result

  12. 07381 Abstracts Collection -- Cryptography

    Blömer, Johannes; Boneh, Dan; Cramer, Ronald; Maurer, Ueli

    2008-01-01

    From 16.09.2007 to 21.09.2007 the Dagstuhl Seminar 07381 ``Cryptography'' was held in the International Conference and Research Center (IBFI), Schloss Dagstuhl. During the seminar, several participants presented their current research, and ongoing work and open problems were discussed. Abstracts of the presentations given during the seminar as well as abstracts of seminar results and ideas are put together in this paper. The first section describes the seminar topics and goa...

  13. Painting, abstraction, discourse

    Besson, Christian

    2012-01-01

    Four catalogues and compilations published this year once again raise the issue of the linkage between painting and critical discourse, with abstraction, where applicable, exacerbating the tension between the two. The first essay, La Peinture après l’abstraction, is nothing less than stimulating. Certain observations made by Alain Cueff about the neglected role of poster artists in the renewed formulation of painting, between 1955 and 1965, lie at the root of the comparison--a new departure--...

  14. Abstracts of contributed papers

    1994-08-01

    This volume contains 571 abstracts of contributed papers to be presented during the Twelfth US National Congress of Applied Mechanics. Abstracts are arranged in the order in which they fall in the program -- the main sessions are listed chronologically in the Table of Contents. The Author Index is in alphabetical order and lists each paper number (matching the schedule in the Final Program) with its corresponding page number in the book.

  15. 08071 Abstracts Collection -- Scheduling

    Jane W. S. Liu; Rolf H. Möhring; Pruhs, Kirk

    2008-01-01

    From 10.02. to 15.02., the Dagstuhl Seminar 08071 ``Scheduling'' was held in the International Conference and Research Center (IBFI), Schloss Dagstuhl. During the seminar, several participants presented their current research, and ongoing work and open problems were discussed. Abstracts of the presentations given during the seminar as well as abstracts of seminar results and ideas are put together in this paper. The first section describes the seminar topics and goals in gen...

  16. 10071 Abstracts Collection -- Scheduling

    Albers, Susanne; Baruah, Sanjoy K; Rolf H. Möhring; Pruhs, Kirk

    2010-01-01

    From 14.02. to 19.02.2010, the Dagstuhl Seminar 10071 ``Scheduling '' was held in Schloss Dagstuhl-Leibniz Center for Informatics. During the seminar, several participants presented their current research, and ongoing work and open problems were discussed. Abstracts of the presentations given during the seminar as well as abstracts of seminar results and ideas are put together in this paper. The first section describes the seminar topics and goals in general. Links to ext...

  17. Abstract Delta Modeling

    Dave Clarke; Michiel Helvensteijn; Ina Schaefer

    2011-01-01

    Delta modeling is an approach to facilitate automated product derivation for software product lines. It is based on a set of deltas specifying modifications that are incrementally applied to a core product. The applicability of deltas depends on feature-dependent conditions. This paper presents abstract delta modeling, which explores delta modeling from an abstract, algebraic perspective. Compared to previous work, we take a more flexible approach with respect to conflicts between modificatio...

  18. The effect of the boron source composition ratio on the adsorption performance of hexagonal boron nitride without a template

    Zhang, Ning, E-mail: zhangning5832@163.com; Zhang, Tong; Kan, Hongmin; Wang, Xiaoyang; Long, Haibo; Cui, Xingyu

    2015-08-01

    An inexpensive boric acid (H{sub 3}BO{sub 3}) and borax (Na{sub 2}B{sub 4}O{sub 7}·10H{sub 2}O) mix was used as a source of boron with different composition ratios, and urea was used as a nitrogen source, in flowing ammonia atmosphere, for the preparation of hexagonal boron nitride (h-BN) with different micro-morphologies. Under a certain synthesis process, the effects of the molar ratio of borax and boric acid (or simply the boron source composition ratio for short) on the phase composition of the sample were studied; the work also explored the effect of boron source composition ratio on the micro-morphology, adsorption desorption isotherm and specific surface area of the h-BN powder. The main purpose of this work was to determine the optimum composition ratio of preparing spherical mesoporous h-BN and ensure that the micro-mechanism underpinning the formation of spherical mesoporous h-BN was understood. The results showed that at the optimum boron source composition ratio of 1:1, globular mesoporous spheres with a diameter of approximately 600–800 nm could be obtained with the highest pore volume and specific surface area (230.2 m{sup 2}/g). - Graphical abstract: Display Omitted - Highlights: • Spherical h-BN was synthesized by controlling the boron source composition ratio. • Without extra spherical template, solid Na{sub 2}O was equal to a spherical template. • At boron source composition ratio of 1:1, h-BN had best adsorption performance.

  19. Metacognition and abstract reasoning.

    Markovits, Henry; Thompson, Valerie A; Brisson, Janie

    2015-05-01

    The nature of people's meta-representations of deductive reasoning is critical to understanding how people control their own reasoning processes. We conducted two studies to examine whether people have a metacognitive representation of abstract validity and whether familiarity alone acts as a separate metacognitive cue. In Study 1, participants were asked to make a series of (1) abstract conditional inferences, (2) concrete conditional inferences with premises having many potential alternative antecedents and thus specifically conducive to the production of responses consistent with conditional logic, or (3) concrete problems with premises having relatively few potential alternative antecedents. Participants gave confidence ratings after each inference. Results show that confidence ratings were positively correlated with logical performance on abstract problems and concrete problems with many potential alternatives, but not with concrete problems with content less conducive to normative responses. Confidence ratings were higher with few alternatives than for abstract content. Study 2 used a generation of contrary-to-fact alternatives task to improve levels of abstract logical performance. The resulting increase in logical performance was mirrored by increases in mean confidence ratings. Results provide evidence for a metacognitive representation based on logical validity, and show that familiarity acts as a separate metacognitive cue. PMID:25416026

  20. Illiterate America.

    Kozol, Jonathan

    Intended for those involved in American social service and educational communities, this book addresses the widespread problem of illiteracy in the United States and the social consequences of this problem. Following an introduction, the chapters in the first section of the book discuss the growing crisis of illiterate America, specifically, the…

  1. Extractive fixed-site polymer sorbent for selective boron removal from natural water

    Thakur, Neha; Kumar, Sanjukta A. [Analytical Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085 (India); Shinde, Rakesh N.; Pandey, Ashok K. [Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085 (India); Kumar, Sangita D., E-mail: sangdk@barc.gov.in [Analytical Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085 (India); Reddy, A.V.R. [Analytical Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085 (India)

    2013-09-15

    Highlights: • N-methyl-D-glucamine was anchored in pores of poly(propylene) membranes. • Functionalized membrane was found to extract boron from natural waters. • Functionalized membrane was easy to prepare, robust and reusuable. • Membrane was characterized in terms of parameters affecting boron sorption. • Applications of membrane were examined for boron removal and quantification. -- Abstract: Water contamination by boron is a widespread environmental problem. The World Health Organization (WHO) recommends maximum boron concentration of 2.4 mg L{sup −1} for drinking water. The paper presents a simple method for preparation of functionalized sheet sorbent for selective extraction of boron from natural water. The pores of commercially available poly(propylene) membrane were functionalized by room temperature in situ crosslinking of poly(vinylbenzyl chloride) with a cyclic diamine piperazine. The precursor membranes were chemically modified with N-methyl D-glucamine which is selective for boron. Characterization of membrane was carried out using scanning electron microscopy (SEM) and attenuated total reflection-Fourier transform infrared spectroscopy (ATR-FTIR) techniques. The functionalized membrane has been characterized in terms of parameters that influence the sorption of boron from aqueous streams like pH, uptake capacity, contact time, effects of competing ions and reusability. The maximum boron sorption capacity determined experimentally was 28 mg g{sup −1}. The studies showed that trace concentrations of boron were quantitatively removed from water at neutral pH. The developed fixed site polymer sorbent exhibited high sorption capacity and fast kinetics as compared to various sorbents reported in literature. It was successfully applied for the removal of boron from ground water and seawater samples in presence of high concentration of interfering ions.

  2. Effect of boron-doping on thermoelectric properties of rutile-type titanium dioxide sintered materials

    Research highlights: → Boron-doped rutile-type TiO2 was prepared by pulsed current sintering method. → The B and TiB2 addition was effective for boron-doping of RTO. → Both electrical resistivity and thermal conductivity decreased using B or TiB2 as a additive. The thermoelectric figure of merit was enhanced by boron-doping. - Abstract: The electrical and thermal transport properties of boron-doped rutile-type TiO2 were investigated. The rutile-type TiO2 powder was mixed with B2O3, TiB2 or B and the mixtures were sintered using the pulse current sintering method at 1473 K. Secondary ion mass spectroscopy (SIMS) and X-ray diffraction (XRD) measurements showed that B or TiB2 addition was effective for boron-doping. The boron was well distributed in the sintered materials and the unit cell volume of rutile increased as the amounts of added B or TiB2 increased. The electrical resistivity and Seebeck coefficient at 300 K decreased with an increase in the unit cell volume indicating that boron addition leads to an increase in the electron concentration. Thermal conductivity at room temperature also decreased with an increase in unit cell volume and as a result the thermoelectric figure of merit for rutile-type TiO2 was enhanced by boron-doping.

  3. Micrometric rods grown by nanosecond pulsed laser deposition of boron carbide

    Lopez-Quintas, Ignacio; Oujja, Mohamed; Sanz, Mikel; Benitez-Cañete, Antonio [Instituto de Química Física Rocasolano, CSIC, Serrano 119, 28006 Madrid (Spain); Chater, Richard J. [Imperial College London, South Kensington Campus, London SW7 2AZ (United Kingdom); Cañamares, Maria Vega [Instituto de Estructura de la Materia, CSIC, Serrano 119, 28006 Madrid (Spain); Marco, José F. [Instituto de Química Física Rocasolano, CSIC, Serrano 119, 28006 Madrid (Spain); Castillejo, Marta, E-mail: marta.castllejo@iqfr.csic.es [Instituto de Química Física Rocasolano, CSIC, Serrano 119, 28006 Madrid (Spain)

    2015-02-15

    Highlights: • Micrometric rods obtained by ns pulsed laser deposition of boron carbide at 1064 and 266 nm. • At 1064 nm microrods display crystalline polyhedral shape with sharp edges and flat sides. • Microrods consist of a mixture of boron, boron oxide, boron carbide and aliphatic hydrocarbons. - Abstract: Micrometric size rods have been fabricated via pulsed laser deposition in vacuum from boron carbide targets using nanosecond pulses of 1064 and 266 nm and room temperature Si (1 0 0) substrates. Morphological, structural and chemical characterization of the microrods was made by applying scanning electron microscopy, focussed ion beam microscopy coupled to secondary ion mass spectrometry, X-ray diffraction, X-ray photoelectron spectroscopy and micro-Raman spectroscopy. Ablation at 1064 nm favours the formation of microrods with high aspect ratio, sharp edges and pyramidal tips, typically 10 μm long with a cross section of around 2 μm × 2 μm. Differently, at 266 nm the microrods are of smaller size and present a more globular aspect. The analyses of the microrods provide information about their crystalline nature and composition, based on a mixture which includes boron, boron oxide and boron carbide, and allows discussion of the wavelength dependent growth mechanisms involved.

  4. Characterization of boron carbide particles and its shielding behavior against neutron radiation

    Highlights: • B4C was characterized by XRD, SEM, EDS, FT-IR and Raman Spectroscopy. • B4C was investigated for the neutron shielding behavior analysis. • Neutron permeability experiments were moderated in the Howitzer using Ra–Be source. • The pellet with 12.5 g B4C powder had the lowest neutron permeability rate. • Total macroscopic cross sections found between 1.491 ± 0.0074 and 0.722 ± 0.0071 cm-1. - Abstract: Boron minerals, considered future essential materials, can be used as raw materials in the production of boron carbide. In this study, boron carbide, the hardest material after diamond and cubic boron nitride, is characterized and the neutron shielding behavior is investigated. The characterization and structural evaluation of the boron carbide sample was performed using X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS), Fourier Transform Infrared Spectroscopy (FT-IR) and Raman Spectroscopy. In addition, a neutron Howitzer was used to measure the neutron permeability of boron carbide samples of various thicknesses. The sample composed of 12.5 g of boron carbide powder and 3 g of Wax® had the lowest neutron permeability rate (62.1%). Pellet 3 had the smallest total macroscopic cross section of boron carbide particles, 0.722 ± 0.0071 cm−1

  5. Micrometric rods grown by nanosecond pulsed laser deposition of boron carbide

    Highlights: • Micrometric rods obtained by ns pulsed laser deposition of boron carbide at 1064 and 266 nm. • At 1064 nm microrods display crystalline polyhedral shape with sharp edges and flat sides. • Microrods consist of a mixture of boron, boron oxide, boron carbide and aliphatic hydrocarbons. - Abstract: Micrometric size rods have been fabricated via pulsed laser deposition in vacuum from boron carbide targets using nanosecond pulses of 1064 and 266 nm and room temperature Si (1 0 0) substrates. Morphological, structural and chemical characterization of the microrods was made by applying scanning electron microscopy, focussed ion beam microscopy coupled to secondary ion mass spectrometry, X-ray diffraction, X-ray photoelectron spectroscopy and micro-Raman spectroscopy. Ablation at 1064 nm favours the formation of microrods with high aspect ratio, sharp edges and pyramidal tips, typically 10 μm long with a cross section of around 2 μm × 2 μm. Differently, at 266 nm the microrods are of smaller size and present a more globular aspect. The analyses of the microrods provide information about their crystalline nature and composition, based on a mixture which includes boron, boron oxide and boron carbide, and allows discussion of the wavelength dependent growth mechanisms involved

  6. Abstractions for Mechanical Systems

    Sloth, Christoffer; Wisniewski, Rafael

    2012-01-01

    mechanical system. The tangential manifolds are generated using constants of motion, which can be derived from Noether's theorem. The transversal manifolds are subsequently generated on a reduced space, given by the Routhian, via action-angle coordinates. The method fully applies for integrable systems. We...... focus on a particular aspect of abstraction - partitioning the state space, as existing methods can be applied on the discretized state space to obtain an automata-based model. The contribution of the paper is to show that well-known reduction methods can be used to generate abstract models, which can...

  7. BORONIZING OF STEEL

    Arzum ULUKÖY

    2006-02-01

    Full Text Available Boride layer has many advantages in comparison with traditional hardening methods. The boride layer has high hardening value and keeps it's hardeness at high temperatures, and it also shows favorible properties, such as the resistance to wear, oxidation and corrosion. The process can be applied at variety of materials, for instance steel, cast iron, cast steel, nickel and cobalt alloys and cermets. In this rewiew, boronizing process properties, boride layer on steel surfaces and specifications and the factors that effect boride layer are examined

  8. Boron thermal regeneration system

    An ion exchanger which allows flow in both directions along a selected flow path is described. A separator plate divides the exchanger tank into two chambers each of which has a flow conduit so that flow may enter or leave from either chamber while prohibiting the resin particles from migrating from one side of the tank to the other. This ion exchanger permits a dual-directional flow process to be practised which results in immediate changes in the boron concentration within a nuclear reactor coolant system even if the ion exchanger resins have not been completely equilibrated during a previous operation. (author)

  9. ESPR 2014. Abstracts

    NONE

    2014-06-15

    The Proceedings on ESPR 2014 include abstracts concerning the following topics: pediatric imaging: thorax, cardiovascular system, CT-technique, head and neck, perinatal imaging, molecular imaging; interventional imaging; specific focus: muscoskeletal imaging in juvenile idiopathic arthritis; radiation protection; oncology; molecular imaging - nuclear medicine; uroradiology and abdominal imaging.

  10. Seismic Consequence Abstraction

    M. Gross

    2004-10-25

    The primary purpose of this model report is to develop abstractions for the response of engineered barrier system (EBS) components to seismic hazards at a geologic repository at Yucca Mountain, Nevada, and to define the methodology for using these abstractions in a seismic scenario class for the Total System Performance Assessment - License Application (TSPA-LA). A secondary purpose of this model report is to provide information for criticality studies related to seismic hazards. The seismic hazards addressed herein are vibratory ground motion, fault displacement, and rockfall due to ground motion. The EBS components are the drip shield, the waste package, and the fuel cladding. The requirements for development of the abstractions and the associated algorithms for the seismic scenario class are defined in ''Technical Work Plan For: Regulatory Integration Modeling of Drift Degradation, Waste Package and Drip Shield Vibratory Motion and Seismic Consequences'' (BSC 2004 [DIRS 171520]). The development of these abstractions will provide a more complete representation of flow into and transport from the EBS under disruptive events. The results from this development will also address portions of integrated subissue ENG2, Mechanical Disruption of Engineered Barriers, including the acceptance criteria for this subissue defined in Section 2.2.1.3.2.3 of the ''Yucca Mountain Review Plan, Final Report'' (NRC 2003 [DIRS 163274]).

  11. Testing abstract behavioral specifications

    Wong, P.Y.H.; Bubel, R.; Boer, F.S. de; Gouw, C.P.T. de; Gómez-Zamalloa, M.; Haehnle, R; Meinke, K.; Sindhu, M.A.

    2015-01-01

    We present a range of testing techniques for the Abstract Behavioral Specification (ABS) language and apply them to an industrial case study. ABS is a formal modeling language for highly variable, concurrent, component-based systems. The nature of these systems makes them susceptible to the introduc

  12. Building Safe Concurrency Abstractions

    Madsen, Ole Lehrmann

    2014-01-01

    as well as programming, and we describe how this has had an impact on the design of the language. Although Beta supports the definition of high-level concurrency abstractions, the use of these rely on the discipline of the programmer as is the case for Java and other mainstream OO languages. We...

  13. ABSTRACTS AND KEY WORDS

    2011-01-01

    Study of Feeding Effects of EM Fermented Feed on the Growth and Survival of Juvenile Sea Cucumber Apostichopus japonicus Gong Hai-ning et al(1) Abstract In this study, comparisons of feeding effects on the sea cucumber Apostichopus japonicus between th

  14. Abstraction through Game Play

    Avraamidou, Antri; Monaghan, John; Walker, Aisha

    2012-01-01

    This paper examines the computer game play of an 11-year-old boy. In the course of building a virtual house he developed and used, without assistance, an artefact and an accompanying strategy to ensure that his house was symmetric. We argue that the creation and use of this artefact-strategy is a mathematical abstraction. The discussion…

  15. Learning Abstracts, 2001.

    Wilson, Cynthia, Ed.

    2001-01-01

    Volume 4 of the League for Innovation in the Community College's Learning Abstracts include the following: (1) "Touching Students in the Digital Age: The Move Toward Learner Relationship Management (LRM)," by Mark David Milliron, which offers an overview of an organizing concept to help community colleges navigate the intersection between digital…

  16. 2002 NASPSA Conference Abstracts.

    Journal of Sport & Exercise Psychology, 2002

    2002-01-01

    Contains abstracts from the 2002 conference of the North American Society for the Psychology of Sport and Physical Activity. The publication is divided into three sections: the preconference workshop, "Effective Teaching Methods in the Classroom;" symposia (motor development, motor learning and control, and sport psychology); and free…

  17. Annual Conference Abstracts

    Engineering Education, 1976

    1976-01-01

    Presents the abstracts of 158 papers presented at the American Society for Engineering Education's annual conference at Knoxville, Tennessee, June 14-17, 1976. Included are engineering topics covering education, aerospace, agriculture, biomedicine, chemistry, computers, electricity, acoustics, environment, mechanics, and women. (SL)

  18. Monadic abstract interpreters

    Sergey, Ilya; Devriese, Dominique; Might, Matthew;

    2013-01-01

    Recent developments in the systematic construction of abstract interpreters hinted at the possibility of a broad unification of concepts in static analysis. We deliver that unification by showing context-sensitivity, polyvariance, flow-sensitivity, reachabilitypruning, heap-cloning and cardinalit...

  19. SPR 2015. Abstracts

    NONE

    2015-04-01

    The volume contains the abstracts of the SPR (society for pediatric radiology) 2015 meeting covering the following issues: fetal imaging, muscoskeletal imaging, cardiac imaging, chest imaging, oncologic imaging, tools for process improvement, child abuse, contrast enhanced ultrasound, image gently - update of radiation dose recording/reporting/monitoring - meaningful or useless meaning?, pediatric thoracic imaging, ALARA.

  20. ABSTRACTS AND KEY WORDS

    2012-01-01

    Morphological Variations and Discriminant Analysis of Three Populations of Mytilus coruscus Ye Ya-qiu et al. (4) Abstract The multivariate morphometrics analysis method was used for studying four morphological characters of three geographical populations of Mytilus coruscus from Sheng-si, Zhou-shan, Tai-zhou along the coast of Zhe-jiang province of China.

  1. ABSTRACTS AND KEY WORDS

    2012-01-01

    Study on the Enrichment Regularity of Semicarbazide in Algae Tian Xiu-hui eta1. (1) Abstract Semicarbazide (SEM) in three kinds of representative algae (Nitzschia closterium, Tetraselmis chui and Dicrateria sp) and seawater was determined using ultra performance liquid chromatogram tandem mass spectrometry in this work. Accumulation of semicarbazide (SEM) in algae under laboratory conditions was studied.

  2. Abstracts of submitted papers

    The conference proceedings contain 152 abstracts of presented papers relating to various aspects of personnel dosimetry, the dosimetry of the working and living environment, various types of dosemeters and spectrometers, the use of radionuclides in various industrial fields, the migration of radionuclides on Czechoslovak territory after the Chernobyl accident, theoretical studies of some parameters of ionizing radiation detectors, and their calibration. (M.D.)

  3. Seismic Consequence Abstraction

    The primary purpose of this model report is to develop abstractions for the response of engineered barrier system (EBS) components to seismic hazards at a geologic repository at Yucca Mountain, Nevada, and to define the methodology for using these abstractions in a seismic scenario class for the Total System Performance Assessment - License Application (TSPA-LA). A secondary purpose of this model report is to provide information for criticality studies related to seismic hazards. The seismic hazards addressed herein are vibratory ground motion, fault displacement, and rockfall due to ground motion. The EBS components are the drip shield, the waste package, and the fuel cladding. The requirements for development of the abstractions and the associated algorithms for the seismic scenario class are defined in ''Technical Work Plan For: Regulatory Integration Modeling of Drift Degradation, Waste Package and Drip Shield Vibratory Motion and Seismic Consequences'' (BSC 2004 [DIRS 171520]). The development of these abstractions will provide a more complete representation of flow into and transport from the EBS under disruptive events. The results from this development will also address portions of integrated subissue ENG2, Mechanical Disruption of Engineered Barriers, including the acceptance criteria for this subissue defined in Section 2.2.1.3.2.3 of the ''Yucca Mountain Review Plan, Final Report'' (NRC 2003 [DIRS 163274])

  4. Reasoning abstractly about resources

    Clement, B.; Barrett, A.

    2001-01-01

    r describes a way to schedule high level activities before distributing them across multiple rovers in order to coordinate the resultant use of shared resources regardless of how each rover decides how to perform its activities. We present an algorithm for summarizing the metric resource requirements of an abstract activity based n the resource usages of its potential refinements.

  5. Abstract Film and Beyond.

    Le Grice, Malcolm

    A theoretical and historical account of the main preoccupations of makers of abstract films is presented in this book. The book's scope includes discussion of nonrepresentational forms as well as examination of experiments in the manipulation of time in films. The ten chapters discuss the following topics: art and cinematography, the first…

  6. EBS Radionuclide Transport Abstraction

    The purpose of this work is to develop the Engineered Barrier System (EBS) radionuclide transport abstraction model, as directed by a written development plan (CRWMS M and O 1999a). This abstraction is the conceptual model that will be used to determine the rate of release of radionuclides from the EBS to the unsaturated zone (UZ) in the total system performance assessment-license application (TSPA-LA). In particular, this model will be used to quantify the time-dependent radionuclide releases from a failed waste package (WP) and their subsequent transport through the EBS to the emplacement drift wall/UZ interface. The development of this conceptual model will allow Performance Assessment Operations (PAO) and its Engineered Barrier Performance Department to provide a more detailed and complete EBS flow and transport abstraction. The results from this conceptual model will allow PA0 to address portions of the key technical issues (KTIs) presented in three NRC Issue Resolution Status Reports (IRSRs): (1) the Evolution of the Near-Field Environment (ENFE), Revision 2 (NRC 1999a), (2) the Container Life and Source Term (CLST), Revision 2 (NRC 1999b), and (3) the Thermal Effects on Flow (TEF), Revision 1 (NRC 1998). The conceptual model for flow and transport in the EBS will be referred to as the ''EBS RT Abstraction'' in this analysis/modeling report (AMR). The scope of this abstraction and report is limited to flow and transport processes. More specifically, this AMR does not discuss elements of the TSPA-SR and TSPA-LA that relate to the EBS but are discussed in other AMRs. These elements include corrosion processes, radionuclide solubility limits, waste form dissolution rates and concentrations of colloidal particles that are generally represented as boundary conditions or input parameters for the EBS RT Abstraction. In effect, this AMR provides the algorithms for transporting radionuclides using the flow geometry and radionuclide concentrations determined by other

  7. Dietary boron, brain function, and cognitive performance.

    Penland, J G

    1994-01-01

    Although the trace element boron has yet to be recognized as an essential nutrient for humans, recent data from animal and human studies suggest that boron may be important for mineral metabolism and membrane function. To investigate further the functional role of boron, brain electrophysiology and cognitive performance were assessed in response to dietary manipulation of boron (approximately 0.25 versus approximately 3.25 mg boron/2000 kcal/day) in three studies with healthy older men and wo...

  8. Banishing brittle bones with boron

    A 6-month study indicates that boron, not even considered an essential nutrient for people and animals, may be a key to preventing osteoporosis, say nutritionist Forrest H. Nielsen and anatomist Curtiss D. Hunt at ARS' Grand Forks, North Dakota, Human Nutrition Research Center. They believe the results of the study - the first to look at the nutritional effects of boron in humans - will generate a lot of interest in the element. In the study, 12 postmenopausal women consumed a very low boron diet (0.25 milligrams per day) for 17 weeks then were given a daily 3-mg supplement - representing the boron intake from a well-balanced diet - for 7 more weeks. Within 8 days after the supplement was introduced, the lost 40 percent less calcium, one-third less magnesium, and slightly less phosphorus through the urine. In fact, their calcium and magnesium losses were lower than prestudy levels, when they were on their normal diets. Since boron isn't considered essential for people, there is not recommended intake and no boron supplement on the market. Nielsen says the supplement of sodium borate used in the study was specially prepared based on the amount of boron a person would get from a well-balanced diet containing fruits and vegetables. He says the average boron intake is about 1.5 mg - or half the experimental dose - but average means a lot of people get less and a lot get more. Hunt cautioned that large doses of boron can be toxic, even lethal. The lowest reported lethal dose of boric acid is about 45 grams (1.6 ounces) for an adult and only 2 grams (0.07 ounce) for an infant.

  9. Abstracts of Main Essays

    2012-01-01

    The Position of Capitalist Study in Marx's Social Formation Theory Yang Xue-gong Xi Da-min The orientation and achievements of Marx's study of Capitalism or bourgeois society is the foundation of his social formation theory. On the base of his scientific study of capitalism, Marx evolves his concept of eco- nomic social formation, the scientific methodology of researching other social formations or social forms, the clues of the development of social formations, the abstraction of the general laws as well as his reflection on this abstraction. A full evaluation and acknowledgement of the position of capitalist study in Marx's social formation theory is crucial for revising Marx's social formation theory in the new era and for solving some controversial issues in the research of social formation theory.

  10. Ghana Science Abstracts

    This issue of the Ghana Science Abstracts combines in one publication all the country's bibliographic output in science and technology. The objective is to provide a quick reference source to facilitate the work of information professionals, research scientists, lecturers and policy makers. It is meant to give users an idea of the depth and scope and results of the studies and projects carried out. The scope and coverage comprise research outputs, conference proceedings and periodical articles published in Ghana. It does not capture those that were published outside Ghana. Abstracts reported have been grouped under the following subject areas: Agriculture, Biochemistry, Biodiversity conservation, biological sciences, biotechnology, chemistry, dentistry, engineering, environmental management, forestry, information management, mathematics, medicine, physics, nuclear science, pharmacy, renewable energy and science education

  11. Medical physics 2013. Abstracts

    The proceedings of the medical physics conference 2013 include abstract of lectures and poster sessions concerning the following issues: Tele-therapy - application systems, nuclear medicine and molecular imaging, neuromodulation, hearing and technical support, basic dosimetry, NMR imaging -CEST (chemical exchange saturation transfer), medical robotics, magnetic particle imaging, audiology, radiation protection, phase contrast - innovative concepts, particle therapy, brachytherapy, computerized tomography, quantity assurance, hybrid imaging techniques, diffusion and lung NMR imaging, image processing - visualization, cardiac and abdominal NMR imaging.

  12. The deleuzian abstract machines

    Werner Petersen, Erik

    2005-01-01

    in emphasis from the three syntheses to mappings and rhizomatic diagrams that cut across semiotics or “blow apart regimes of signs”. The aim here is the absolute deterritorialization. Deleuze has shown how abstract machines operate in the philosophy of Foucault, the literature of Proust and Kafka......, and the painting of Bacon. We will finish our presentation by showing how these machines apply to architecture....

  13. Historical development of abstracting.

    Skolnik, H

    1979-11-01

    The abstract, under a multitude of names, such as hypothesis, marginalia, abridgement, extract, digest, précis, resumé, and summary, has a long history, one which is concomitant with advancing scholarship. The progression of this history from the Sumerian civilization ca. 3600 B.C., through the Egyptian and Greek civilizations, the Hellenistic period, the Dark Ages, Middle Ages, Renaissance, and into the modern period is reviewed. PMID:399482

  14. SPR 2014. Abstracts

    NONE

    2014-05-15

    The proceedings of the SPR 2014 meeting include abstracts on the following topics: Body imaging techniques: practical advice for clinic work; thoracic imaging: focus on the lungs; gastrointestinal imaging: focus on the pancreas and bowel; genitourinary imaging: focus on gonadal radiology; muscoskeletal imaging; focus on oncology; child abuse and nor child abuse: focus on radiography; impact of NMR and CT imaging on management of CHD; education and communication: art and practice in pediatric radiology.

  15. NPP life management (abstracts)

    Abstracts of the papers presented at the International conference of the Ukrainian Nuclear Society 'NPP Life Management'. The following problems are considered: modernization of the NPP; NPP life management; waste and spent nuclear fuel management; decommissioning issues; control systems (including radiation and ecological control systems); information and control systems; legal and regulatory framework. State nuclear regulatory control; PR in nuclear power; training of personnel; economics of nuclear power engineering

  16. Abstracts of the communications

    2014-01-01

    (P) paper, (A) abstract only Dietary patterns and habitat of the Grimm’s duiker, Sylvicapra grimmia in Benin, (P)Abdoul Razack Adjibi Oualiou, Jean Claude Codjia, Guy Apollinaire Mensah The distribution of protected areas and conservation of flora in the republic of Benin, (P)Aristide Adomou, Hounnankpon Yedomonhan, Brice Sinsin, Laurentius Josephus and Gerardus Van Der Maesen The problem of invasive plants in protected areas. Chromolaena odorata in the regeneration process of the dense, semi...

  17. SPR 2014. Abstracts

    The proceedings of the SPR 2014 meeting include abstracts on the following topics: Body imaging techniques: practical advice for clinic work; thoracic imaging: focus on the lungs; gastrointestinal imaging: focus on the pancreas and bowel; genitourinary imaging: focus on gonadal radiology; muscoskeletal imaging; focus on oncology; child abuse and nor child abuse: focus on radiography; impact of NMR and CT imaging on management of CHD; education and communication: art and practice in pediatric radiology.

  18. WWNPQFT-2011 - Abstracts

    The object of this workshop is to consolidate and publicize new efforts in non-perturbative field theories. This year the presentations deal with quantum gravity, non-commutative geometry, fat-tailed wave-functions, strongly coupled field theories, space-times two time-like dimensions, and multiplicative renormalization. A presentation is dedicated to the construction of a nucleon-nucleon potential from an analytical, non-perturbative gauge invariant QCD. This document gathers the abstracts of the presentations

  19. Lattice dynamics of α boron and of boron carbide

    The atomic structure and the lattice dynamics of α boron and of B4C boron carbide have been studied by Density Functional Theory (D.F.T.) and Density Functional Perturbation Theory (D.F.P.T.). The bulk moduli of the unit-cell and of the icosahedron have been investigated, and the equation of state at zero temperature has been determined. In α boron, Raman diffusion and infrared absorption have been studied under pressure, and the theoretical and experimental Grueneisen coefficients have been compared. In boron carbide, inspection of the theoretical and experimental vibrational spectra has led to the determination of the atomic structure of B4C. Finally, the effects of isotopic disorder have been modeled by an exact method beyond the mean-field approximation, and the effects onto the Raman lines has been investigated. The method has been applied to isotopic alloys of diamond and germanium. (author)

  20. Qualitative analysis for reactivity accidents due to the boron dilution of the Korea Standard Nuclear Power Plant

    Park, J. K.; Park, J. H.; Lim, H. K.; Han, S. J.; Kim, T. W

    2003-03-01

    Researches for reactivity accidents due to local or rapid boron dilution in the reactor core have been recently performed in France, United States of America and Germany. As the result, core damage probability due to boron dilution is relatively high when nuclear power plants are in the low power or shutdown conditions. Nevertheless, few research activities to reveal reactivity accidents originated from local or rapid boron dilution have been performed in Korea. Thus, in order to identify possible boron dilution scenarios that can result in reactivity accidents and to suggest alternatives or remedies that can enhance the safety of a nuclear power plant, this study is carried out. As the results, it was revealed that YGN 5 and 6 have been designed and maintained so as to minimize the possibility of boron dilution accident. However, in the case of boron dilution scenarios that result from human error, not only various types of human error should be considered but also detailed human error probabilities are insufficient. Thus, in-depth researches for the human-induced boron dilution accidents could be performed to get more meaningful results. Nevertheless, characteristics of each boron dilution scenarios that are addressed from this report will be helpful for the safety enhancement of nuclear power plants, if they are supplementally added to plant operating procedures including normal, abnormal and emergency operating procedures.

  1. EBS Radionuclide Transport Abstraction

    The purpose of this report is to develop and analyze the engineered barrier system (EBS) radionuclide transport abstraction model, consistent with Level I and Level II model validation, as identified in Technical Work Plan for: Near-Field Environment and Transport: Engineered Barrier System: Radionuclide Transport Abstraction Model Report Integration (BSC 2005 [DIRS 173617]). The EBS radionuclide transport abstraction (or EBS RT Abstraction) is the conceptual model used in the total system performance assessment (TSPA) to determine the rate of radionuclide releases from the EBS to the unsaturated zone (UZ). The EBS RT Abstraction conceptual model consists of two main components: a flow model and a transport model. Both models are developed mathematically from first principles in order to show explicitly what assumptions, simplifications, and approximations are incorporated into the models used in the TSPA. The flow model defines the pathways for water flow in the EBS and specifies how the flow rate is computed in each pathway. Input to this model includes the seepage flux into a drift. The seepage flux is potentially split by the drip shield, with some (or all) of the flux being diverted by the drip shield and some passing through breaches in the drip shield that might result from corrosion or seismic damage. The flux through drip shield breaches is potentially split by the waste package, with some (or all) of the flux being diverted by the waste package and some passing through waste package breaches that might result from corrosion or seismic damage. Neither the drip shield nor the waste package survives an igneous intrusion, so the flux splitting submodel is not used in the igneous scenario class. The flow model is validated in an independent model validation technical review. The drip shield and waste package flux splitting algorithms are developed and validated using experimental data. The transport model considers advective transport and diffusive transport

  2. A new and effective approach to boron removal by using novel boron-specific fungi isolated from boron mining wastewater.

    Taştan, Burcu Ertit; Çakir, Dilara Nur; Dönmez, Gönül

    2016-01-01

    Boron-resistant fungi were isolated from the wastewater of a boron mine in Turkey. Boron removal efficiencies of Penicillium crustosum and Rhodotorula mucilaginosa were detected in different media compositions. Minimal Salt Medium (MSM) and two different waste media containing molasses (WM-1) or whey + molasses (WM-2) were tested to make this process cost effective when scaled up. Both isolates achieved high boron removal yields at the highest boron concentrations tested in MSM and WM-1. The maximum boron removal yield by P. crustosum was 45.68% at 33.95 mg l(-1) initial boron concentration in MSM, and was 38.97% at 42.76 mg l(-1) boron for R. mucilaginosa, which seemed to offer an economically feasible method of removing boron from the effluents. PMID:26877036

  3. Grain refinement by boron nitride; Gefuegemodifizierung durch Bornitrid

    Bach, F.W.; Guenther, A.; Phan-Tan, T.; Kruessel, T.; Wilk, P. [Institut fuer Werkstoffkunde der Universitaet Hannover, Struktur- und Biomedizinwerkstoffe, Garbsen (Germany)

    2005-01-01

    Grain refinement of magnesium alloys aims at better deformation behaviour, higher strength and improved corrosion resistance. Besides mechanical treatment like pressing, it is possible to refine the grainsize by using nucleation materials. Whereas calcium and rare earth elements are already widely used, the use of boron nitride offers a cheap alternative to refine grains of magnesium aluminum alloys. The effect is achieved by the reaction of boron nitride with aluminum which cracks the chemical compound to form aluminum nitride with the nitrogen while boron is forming different magnesium borides. These two compounds both exhibit very high melting points and are stable in this environment so that they can act as seed crystals. Because boron nitride shows a bad wettability to metal molds, it would float on top of the mold. Therefore, it is necessary to produce pellets out of boron nitride and aluminum powder to improve contact to the mold and enhance reaction velocity. (Abstract Copyright [2005], Wiley Periodicals, Inc.) [German] Durch die Kornfeinung von Magnesiumlegierungen wird das Ziel einer Festigkeitssteigerung, einer verbesserten Umformbarkeit und einer erhoehten Korrosionsbestaendigkeit verfolgt. Neben mechanischen Loesungswegen (Strangpressen etc.) besteht die Moeglichkeit legierungstechnisch durch den Einsatz keimbildender Stoffe eine Kornfeinung zu erzielen. Neben dem Einsatz von Kalzium oder Seltenen Erden bietet Bornitrid eine kostenguenstige Moeglichkeit eine Kornfeinung fuer aluminiumhaltige Magnesiumlegierungen zu erzeugen. Die Kornfeinung beruht dabei auf der Reaktion des Bornitrids mit dem Aluminium in der Schmelze, durch welche das Bornitrid zersetzt wird und mit dem freiwerdenden Stickstoff zu Aluminiumnitrid reagiert, waehrend sich das Bor mit Magnesium zu Magnesiumboriden verbindet. Bei beiden Produkten handelt es sich um hochschmelzende, in dieser Umgebung stabile Verbindungen, die als Kristallisationskeime wirken koennen. Die Zugabe des

  4. Structural characterization of electrodeposited boron

    Ashish Jain; C Ghosh; T R Ravindran; S Anthonysamy; R Divakar; E Mohandas; G S Gupta

    2013-12-01

    Structural characterization of electrodeposited boron was carried out by using transmission electron microscopy and Raman spectroscopy. Electron diffraction and phase contrast imaging were carried out by using transmission electron microscopy. Phase identification was done based on the analysis of electron diffraction patterns and the power spectrum calculated from the lattice images from thin regions of the sample. Raman spectroscopic examination was carried out to study the nature of bonding and the allotropic form of boron obtained after electrodeposition. The results obtained from transmission electron microscopy showed the presence of nanocrystallites embedded in an amorphous mass of boron. Raman microscopic studies showed that amorphous boron could be converted to its crystalline form at high temperatures.

  5. Program and abstracts

    This volume contains the program and abstracts of the conference. The following topics are included: metal vapor molecular lasers, magnetohydrodynamics, rare gas halide and nuclear pumped lasers, transfer mechanisms in arcs, kinetic processes in rare gas halide lasers, arcs and flows, XeF kinetics and lasers, fundamental processes in excimer lasers, electrode effects and vacuum arcs, electron and ion transport, ion interactions and mobilities, glow discharges, diagnostics and afterglows, dissociative recombination, electron ionization and excitation, rare gas excimers and group VI lasers, breakdown, novel laser pumping techniques, electrode-related discharge phenomena, photon interactions, attachment, plasma chemistry and infrared lasers, electron scattering, and reactions of excited species

  6. Circularity and Lambda Abstraction

    Danvy, Olivier; Thiemann, Peter; Zerny, Ian

    2013-01-01

    In this tribute to Doaitse Swierstra, we present the rst transformation between lazy circular programs a la Bird and strict cir- cular programs a la Pettorossi. Circular programs a la Bird rely on lazy recursive binding: they involve circular unknowns and make sense equa- tionally. Circular...... unknowns from what is done to them, which we lambda-abstract with functions. The circular unknowns then become dead variables, which we eliminate. The result is a strict circu- lar program a la Pettorossi. This transformation is reversible: given a strict circular program a la Pettorossi, we introduce...

  7. ABSTRACTION OF DRIFT SEEPAGE

    Drift seepage refers to flow of liquid water into repository emplacement drifts, where it can potentially contribute to degradation of the engineered systems and release and transport of radionuclides within the drifts. Because of these important effects, seepage into emplacement drifts is listed as a ''principal factor for the postclosure safety case'' in the screening criteria for grading of data in Attachment 1 of AP-3.15Q, Rev. 2, ''Managing Technical Product Inputs''. Abstraction refers to distillation of the essential components of a process model into a form suitable for use in total-system performance assessment (TSPA). Thus, the purpose of this analysis/model is to put the information generated by the seepage process modeling in a form appropriate for use in the TSPA for the Site Recommendation. This report also supports the Unsaturated-Zone Flow and Transport Process Model Report. The scope of the work is discussed below. This analysis/model is governed by the ''Technical Work Plan for Unsaturated Zone Flow and Transport Process Model Report'' (CRWMS MandO 2000a). Details of this activity are in Addendum A of the technical work plan. The original Work Direction and Planning Document is included as Attachment 7 of Addendum A. Note that the Work Direction and Planning Document contains tasks identified for both Performance Assessment Operations (PAO) and Natural Environment Program Operations (NEPO). Only the PAO tasks are documented here. The planning for the NEPO activities is now in Addendum D of the same technical work plan and the work is documented in a separate report (CRWMS MandO 2000b). The Project has been reorganized since the document was written. The responsible organizations in the new structure are the Performance Assessment Department and the Unsaturated Zone Department, respectively. The work plan for the seepage abstraction calls for determining an appropriate abstraction methodology, determining uncertainties in seepage, and providing

  8. Beyond the abstractions?

    Olesen, Henning Salling

    2006-01-01

      The anniversary of the International Journal of Lifelong Education takes place in the middle of a conceptual landslide from lifelong education to lifelong learning. Contemporary discourses of lifelong learning etc are however abstractions behind which new functions and agendas for adult education...... are set. The ideological discourse of recent policies seems to neglect the fact that history and resources for lifelong learning are different across Europe, and also neglects the multiplicity of adult learners. Instead of refusing the new agendas, however, adult education research should try to dissolve...... learning. Adult education research must fulfil it's potential conversion from normative philosophy to critical and empirical social science....

  9. ESPR 2015. Abstracts

    NONE

    2015-05-10

    The volume includes the abstracts of the ESPR 2015 covering the following topics: PCG (post graduate courses): Radiography; fluoroscopy and general issue; nuclear medicine, interventional radiology and hybrid imaging, pediatric CT, pediatric ultrasound; MRI in childhood. Scientific sessions and task force sessions: International aspects; neuroradiology, neonatal imaging, engineering techniques to simulate injury in child abuse, CT - dose and quality, challenges in the chest, cardiovascular and chest, muscoskeletal, oncology, pediatric uroradiology and abdominal imaging, fetal and postmortem imaging, education and global challenges, neuroradiology - head and neck, gastrointestinal and genitourinary.

  10. IPR 2016. Abstracts

    The volume on the meeting of pediatric radiology includes abstract on the following issues: chest, cardiovascular system, neuroradiology, CT radiation DRs (diagnostic reference levels) and dose reporting guidelines, genitourinary imaging, gastrointestinal radiology, oncology an nuclear medicine, whole body imaging, fetal/neonates imaging, child abuse, oncology and hybrid imaging, value added imaging, muscoskeletal imaging, dose and radiation safety, imaging children - immobilization and distraction techniques, information - education - QI and healthcare policy, ALARA, the knowledge skills and competences for a technologist/radiographer in pediatric radiology, full exploitation of new technological features in pediatric CT, image quality issues in pediatrics, abdominal imaging, interventional radiology, MR contrast agents, tumor - mass imaging, cardiothoracic imaging, ultrasonography.

  11. Abstracts of Major Articles

    2012-01-01

    On Problems in Fujian's Present Health Insurance Professionals and Related Suggestions LIN Deng-hui,WU Xiao-nan (School of Public Health, Fujian Medical University, Fuzhou 350108, China) Abstract:Based on a statistical analysis of questionnaire survey data collected from practitioners in Fu- jian's medical insurance management system, the paper discusses the problems relevant to the staff's qua lity structure in this industry as well as mechanisms for continuing education and motivation. Finally, the authors advance such suggestions as increasing the levels of practitioner's expertise and working capacity by developing disciplinary education and continuing motivated with a well-established motivation system. education, and encouraging employees to get highly

  12. IPR 2016. Abstracts

    NONE

    2016-05-15

    The volume on the meeting of pediatric radiology includes abstract on the following issues: chest, cardiovascular system, neuroradiology, CT radiation DRs (diagnostic reference levels) and dose reporting guidelines, genitourinary imaging, gastrointestinal radiology, oncology an nuclear medicine, whole body imaging, fetal/neonates imaging, child abuse, oncology and hybrid imaging, value added imaging, muscoskeletal imaging, dose and radiation safety, imaging children - immobilization and distraction techniques, information - education - QI and healthcare policy, ALARA, the knowledge skills and competences for a technologist/radiographer in pediatric radiology, full exploitation of new technological features in pediatric CT, image quality issues in pediatrics, abdominal imaging, interventional radiology, MR contrast agents, tumor - mass imaging, cardiothoracic imaging, ultrasonography.

  13. Boron diffusion in silicon devices

    Rohatgi, Ajeet; Kim, Dong Seop; Nakayashiki, Kenta; Rounsaville, Brian

    2010-09-07

    Disclosed are various embodiments that include a process, an arrangement, and an apparatus for boron diffusion in a wafer. In one representative embodiment, a process is provided in which a boric oxide solution is applied to a surface of the wafer. Thereafter, the wafer is subjected to a fast heat ramp-up associated with a first heating cycle that results in a release of an amount of boron for diffusion into the wafer.

  14. EBS Radionuclide Transport Abstraction

    J.D. Schreiber

    2005-08-25

    The purpose of this report is to develop and analyze the engineered barrier system (EBS) radionuclide transport abstraction model, consistent with Level I and Level II model validation, as identified in ''Technical Work Plan for: Near-Field Environment and Transport: Engineered Barrier System: Radionuclide Transport Abstraction Model Report Integration'' (BSC 2005 [DIRS 173617]). The EBS radionuclide transport abstraction (or EBS RT Abstraction) is the conceptual model used in the total system performance assessment for the license application (TSPA-LA) to determine the rate of radionuclide releases from the EBS to the unsaturated zone (UZ). The EBS RT Abstraction conceptual model consists of two main components: a flow model and a transport model. Both models are developed mathematically from first principles in order to show explicitly what assumptions, simplifications, and approximations are incorporated into the models used in the TSPA-LA. The flow model defines the pathways for water flow in the EBS and specifies how the flow rate is computed in each pathway. Input to this model includes the seepage flux into a drift. The seepage flux is potentially split by the drip shield, with some (or all) of the flux being diverted by the drip shield and some passing through breaches in the drip shield that might result from corrosion or seismic damage. The flux through drip shield breaches is potentially split by the waste package, with some (or all) of the flux being diverted by the waste package and some passing through waste package breaches that might result from corrosion or seismic damage. Neither the drip shield nor the waste package survives an igneous intrusion, so the flux splitting submodel is not used in the igneous scenario class. The flow model is validated in an independent model validation technical review. The drip shield and waste package flux splitting algorithms are developed and validated using experimental data. The transport

  15. Magnetostriction of the polycrystalline Fe80Al20 alloy doped with boron

    Highlights: ► Fe80Al20 polycrystalline alloy magnetostriction 40 ppm increased to 80 ppm due to 2% of B doping. ► B stabilizes α-FeAl phase and a coexistence of α-FeAl + Fe3Al improves magnetostriction. ► Presence of Fe2B phase causes domain rearrangement revealed by the decrease of the volume magnetostriction. - Abstract: The doping of Fe80Al20 polycrystalline alloy with 2% of boron increased the total magnetostriction twofold compared to a sample without boron. A value close to 80 ppm was achieved at 300 K. The microstructures of the boron-doped alloys show a dendritically solidified matrix with interdendritic α-FeAl and/or Fe3Al and Fe2B eutectic between the grains. The XRD analysis reveals an increase in the volume fraction of α-FeAl and a correspondent decrease of the Fe3Al phase volume fraction as the boron content increases. The increase of the volume fraction of this tetragonal Fe2B phase in the samples doped with boron causes the decrease of the strong volume magnetostriction that was observed in the alloy without boron. There is some evidence that the improvement of the magnetostriction magnitude due to the addition of boron to the Fe80Al20 alloy could reach the maximal magnetostriction if the 1:1 optimal ratio of the volume fractions of the α-FeAl and Fe3Al phases could be reached.

  16. Influence of boron on strain hardening behaviour and ductility of low carbon hot rolled steel

    Highlights: → Unique feature of low strain hardening exponent (n) with high total elongation has been discussed in industrially produced low carbon boron containing steel. → n has been correlated with the micro structural changes occurring during deformation of steel. → This feature of low n and high % elongation has potential for higher cold reducibility. → The work is being reported for the first time on industrially produced low carbon boron containing steel. - Abstract: The beneficial effect of boron on mechanical properties of low carbon Al-killed steel has been reported in recent past. However, the effect of boron on strain hardening exponent (n) and ductility has not been fully understood. This aspect has been discussed in present work. The results of mill trials with reference to n and ductility with boron added steel are compared to those for commercial grade. The lowering of 'n' with increased total elongation in boron bearing steel has been related to the microstructural evolution as a result of boron addition.

  17. Synthesis of boron carbide nanoflakes via a bamboo-based carbon thermal reduction method

    Graphical abstract: B4C nanoflakes were synthesized via a facile and cost-effective bamboo-based carbon thermal reduction method. Highlights: •Boron carbide nanoflakes were successfully synthesized via a bamboo-based carbon thermal reduction method. •A fluoride-assisted VLS nucleation and VS growth mechanism were proposed. •We studied the resistivity of boron carbide nanoflakes via in situ TEM techniques for the first time. -- Abstract: Boron carbide nanoflakes have been successfully synthesized by a facile and cost-effective bamboo-based carbon thermal reduction method. The majority of the boron carbide products exhibited a flake-like morphology with lateral dimensions of 0.5–50 μm in width and more than 50 μm in length, while the thickness was less than 150 nm. The structural, morphological, and elemental analyses demonstrated that these nanoflakes grew via the fluoride-assisted vapor–liquid–solid combined with vapor–solid growth mechanism. The corresponding growth model was proposed. In addition, the electrical property of individual boron carbide nanoflake was investigated by an in situ two point method inside a transmission electron microscope. The resistivity of boron carbide nanoflakes was measured to be 0.14 MΩ cm

  18. The feasibility of boron removal from water by capacitive deionization

    Avraham, Eran, E-mail: eranchem@gmail.com [Department of Chemistry, Bar Ilan University, Ramat-Gan 52900 (Israel); Noked, Malachi; Soffer, Abraham; Aurbach, Doron [Department of Chemistry, Bar Ilan University, Ramat-Gan 52900 (Israel)

    2011-07-15

    Highlights: > Boron removal by electrochemical means. > Temporary local pH changes developed within the pores were indicated by using MgCl{sub 2} in the solution as a probe. > The process of Boron extraction from water takes place in two stages: 1. dissociation of boric acid on the negatively polarized electrode. 2. Electro-adsorption of borate ion onto the positively polarized electrode. - Abstract: We report on the possibility of removing boron (in the form of boric acid) from water by electrochemical means. We explore capacitive de-ionization (CDI) processes in which local changes in pH near the surface of high-surface-area activated carbon fiber (ACF) electrodes during charging are utilized, in order to dissociate boric acid into borate ions which can be electro-adsorbed onto the positive electrode in the CDI cells. For this purpose, a special flow-through CDI cell was constructed in which the feed solution flows through the electrodes. Local pH changes near the carbon electrode surface were investigated using a MgCl{sub 2} solution probe in three- (with reference) and two-electrode cells, and described qualitatively. We show that, to a certain extent, boron can indeed be removed from water by CDI.

  19. Contents and Abstracts

    2012-01-01

    [Ancient Mediterranean Civilizations] Title: On Poseidon's Image in Homeric Epics Author: Zhu Yizhang, Lecturer, School of History and Culture, Shandong University, Jinan, Shandong, 250100, China. Abstract: Poseidon was an important role in religion, myth and literature of ancient Greece. His religious functions, and status in mythical image in literature were mainly established by Homeric Epics. Poseidon doesn't only appear frequently in the Homeric Epics but also influences the development of the plots directly; therefore, he could be seen as one of the most important gods in the Epics. But Homeric Epics do not introduce his basic image clearly. In Homeric Epics, Poseidon carries the deity and humanity aspect of the figure, and the latter was emphasized, which implied his archetype was a mortal wanax.

  20. ABSTRACTS AND KEY WORDS

    2012-01-01

    Comparative Study on Adhesion Effect Among Different Materials of Sepia esculenta Wang Xue-mei et al. (1) Abstract PE Harness, mesh, sea cucumber seedling box attached, sorghum bar, tamarix (fresh, and old), artemisia annua (fresh, and old) and artificial egg-based subsidiary were used as spawning substrates of Sepia esculenta for comparative study on adhesion effect during artificial breeding. The results showed that the best was artificial egg-based subsidiary produced by the process of invention in this study. The second was old artemisia annua and tamarix. PE Harness, mesh, sea cucumber seedling box attached, sorghum bar were unsatisfactory for using as spawning substrates of Sepia esculenta. Key words Sepia esculenta; adhesion effect; different materials

  1. A LARI Experience (Abstract)

    Cook, M.

    2015-12-01

    (Abstract only) In 2012, Lowell Observatory launched The Lowell Amateur Research Initiative (LARI) to formally involve amateur astronomers in scientific research by bringing them to the attention of and helping professional astronomers with their astronomical research. One of the LARI projects is the BVRI photometric monitoring of Young Stellar Objects (YSOs), wherein amateurs obtain observations to search for new outburst events and characterize the colour evolution of previously identified outbursters. A summary of the scientific and organizational aspects of this LARI project, including its goals and science motivation, the process for getting involved with the project, a description of the team members, their equipment and methods of collaboration, and an overview of the programme stars, preliminary findings, and lessons learned is presented.

  2. Abstracts of Selected Papers

    2012-01-01

    On the Social Solidarity of Organization An Empirical Analysis Li Hanlin Abstract: Based on the 2002 survey data, this paper tries to measure solidarity in organization. The operationalization for this measurement goes from two points of view. One is from the degree of cohesion and another one is from the degree of vulnerability. To observe and measure the degree of cohesion three subscales like social support, vertical integration and organizational identity have been used. To observe and measure the degree of vulnerability other three subscales like dissatisfaction, relative deprivation and anomie have been used. The paper tries to explore finally under which condition the organization behavior and behavior orientation could go to the similarity or make some difference. Key words: Organization Cohesion Vulnerability Organization Behavior

  3. ABSTRACTS AND KEY WORDS

    2012-01-01

    Determination of the Estrogen Alkylphenols and Bisphenol A in Marine Sediments by Gas Chromatography-Mass Spectrometry Deng Xu-xiu et al. (1) Abstract Octylphenol, nonylphenol and bisphenol A are recognized environmental endocrine disruptors. A quantitative method was established for the simultaneous determination of octylphenol, nonylphenol and bisphenol A in marine sediments by gas chromatography-mass spectrometry. The test sample was extracted by methanol with ultrasonic technique, purified with copper powder and carbon solid phase extraction column, and derived with heptafluorobutyric anhydride. Then the analytes were separated on HP-5ms column and determined by gas chromatography-mass. The recovery of the method was between 84.3% and 94.5%, and the LOQ of 4-N- octylphenol, nonylphenol and bisphenol A was 0.25 g/kg, 0.15 g/kg and 0.15 g/kg. Key words octylphenol; nonylphenol; bisphenol A; gas chromatography-mass spectrometry

  4. ICENES 2007 Abstracts

    In this book Conference Program and Abstracts were included 13th International Conference on Emerging Nuclear Energy Systems which held between 03-08 June 2007 in Istanbul, Turkey. The main objective of International Conference series on Emerging Nuclear Energy Systems (ICENES) is to provide an international scientific and technical forum for scientists, engineers, industry leaders, policy makers, decision makers and young professionals who will shape future energy supply and technology , for a broad review and discussion of various advanced, innovative and non-conventional nuclear energy production systems. The main topics of 159 accepted papers from 35 countries are fusion science and technology, fission reactors, accelerator driven systems, transmutation, laser in nuclear technology, radiation shielding, nuclear reactions, hydrogen energy, solar energy, low energy physics and societal issues

  5. Boron effects on the ductility of a nano-cluster-strengthened ferritic steel

    Research highlights: → Cu-rich nano-particle precipitation strengthens the ferritic steels. → Boron doping suppresses brittle intergranular fracture. → Moisture-induced environmental embrittlement can be alleviated by surface coating. - Abstract: The mechanical properties of Cu-rich nano-cluster-strengthened ferritic steels with and without boron doping were investigated. Tensile tests at room temperature in air showed that the B-doped ferritic steel has similar yield strength but a larger elongation than that without boron doping after extended aging at 500 deg. C. There are three mechanisms affecting the ductility and fracture of these steels: brittle cleavage fracture, week grain boundaries, and moisture-induced hydrogen embrittlement. Our study reveals that boron strengthens the grain boundary and suppresses the intergranular fracture. Furthermore, the moisture-induced embrittlement can be alleviated by surface coating with vacuum oil.

  6. Little People of America

    ... information. Our Sponsors Welcome to Little People of America Little People of America (LPA) is a nonprofit organization that provides support ... survey can be seen here. © Little People of America 250 El Camino Real Suite 218, Tustin, CA ...

  7. Teaching for Abstraction: A Model

    White, Paul; Mitchelmore, Michael C.

    2010-01-01

    This article outlines a theoretical model for teaching elementary mathematical concepts that we have developed over the past 10 years. We begin with general ideas about the abstraction process and differentiate between "abstract-general" and "abstract-apart" concepts. A 4-phase model of teaching, called Teaching for Abstraction, is then proposed…

  8. Wettability of boron carbide

    The wettability of boron carbide has been examined by means of the sessile drop method, using the following candidate alloys: (96wt%AG-4wt%Ti), (Ag-26.5wt%Cu-3wt%Ti), (Sn-10wt%Ag-4wt%Ti), Sn(99.95wt%) and Al(99.99wt%). The results show that B4C is completely wetted by the Ag-based alloys. Sn-10wt%Ag-4wt%Ti alloy and pure Al partly wet the B4C surface, while pure Sn does not wet B4C at all. For all the alloys used, except pure Sn, a reaction layer was observed at the interface between the ceramic part and the metal drop. Although the spreading kinetics of the Al-drop was much slower compared with the Ti-containing alloys, the reaction rate was considerably higher in the former case. This suggests that aluminium is an attractive candidate material for brazing of B4C. Formation of the low melting B2O3 at the B4C surface may cause oxidation of the filler metal during joining, which, in turn, leads to a low bond strength

  9. Investigations of boron transport in a PWR core with COBAYA3/SUBCHANFLOW inside the NURESIM platform

    Highlights: • Simulation of boron slug transport in a core with coupled codes. • Spatial and temporal discretization to describe boron dilution scenarios. • Code validation by code-to-code comparison. • Boron dilution simulation including cross flow between fuel assemblies. - Abstract: Multi-scale, multi-physics problems reveal significant challenges while dealing with coupled neutronic/thermal-hydraulic solutions. Current generations of reactor dynamic codes applied to Light Water Reactors (LWRs), and in the context of this paper, pressurized water reactors (PWRs), are based on 3D neutronic nodal methods coupled with single or two phase flow thermal hydraulic system or sub-channel codes. This paper describes the extension of the coupling scheme between the 3D neutron diffusion codes COBAYA3 and DYN3D, and the sub-channel thermal-hydraulic code SUBCHANFLOW for the simulation of boron dilution transients. This includes the validation of the boron transport model of SUBCHANFLOW. The coupling of COBAYA3 and DYN3D with SUBCHANFLOW is performed inside the NURESIM platform making use of the novel automatic mesh superposition for code coupling. Boron transport models are needed for the simulation of boron dilution transients following a SBLOCA (after loop-seal clearing). In this case, the mixing is a key mechanism determining the positive reactivity insertion in the core. The results obtained with the coupled codes COBAYA3/SUBCHANFLOW, DYN3D/SUBCHANFLOW will be presented and discussed for two transient scenarios; a homogeneous and a heterogeneous boron dilution problem for a mini-core and for a PWR core defined in the NURISP boron dilution Benchmark

  10. Stellar Presentations (Abstract)

    Young, D.

    2015-12-01

    (Abstract only) The AAVSO is in the process of expanding its education, outreach and speakers bureau program. powerpoint presentations prepared for specific target audiences such as AAVSO members, educators, students, the general public, and Science Olympiad teams, coaches, event supervisors, and state directors will be available online for members to use. The presentations range from specific and general content relating to stellar evolution and variable stars to specific activities for a workshop environment. A presentation—even with a general topic—that works for high school students will not work for educators, Science Olympiad teams, or the general public. Each audience is unique and requires a different approach. The current environment necessitates presentations that are captivating for a younger generation that is embedded in a highly visual and sound-bite world of social media, twitter and U-Tube, and mobile devices. For educators, presentations and workshops for themselves and their students must support the Next Generation Science Standards (NGSS), the Common Core Content Standards, and the Science Technology, Engineering and Mathematics (STEM) initiative. Current best practices for developing relevant and engaging powerpoint presentations to deliver information to a variety of targeted audiences will be presented along with several examples.

  11. Automated Supernova Discovery (Abstract)

    Post, R. S.

    2015-12-01

    (Abstract only) We are developing a system of robotic telescopes for automatic recognition of Supernovas as well as other transient events in collaboration with the Puckett Supernova Search Team. At the SAS2014 meeting, the discovery program, SNARE, was first described. Since then, it has been continuously improved to handle searches under a wide variety of atmospheric conditions. Currently, two telescopes are used to build a reference library while searching for PSN with a partial library. Since data is taken every night without clouds, we must deal with varying atmospheric and high background illumination from the moon. Software is configured to identify a PSN, reshoot for verification with options to change the run plan to acquire photometric or spectrographic data. The telescopes are 24-inch CDK24, with Alta U230 cameras, one in CA and one in NM. Images and run plans are sent between sites so the CA telescope can search while photometry is done in NM. Our goal is to find bright PSNs with magnitude 17.5 or less which is the limit of our planned spectroscopy. We present results from our first automated PSN discoveries and plans for PSN data acquisition.

  12. Book of Abstracts

    ANIMMA 2013 is the third of a series of conferences devoted to endorsing and promoting scientific and technical activities based on nuclear instrumentation and measurements. The main objective of ANIMMA conference is to unite the various scientific communities not only involved in nuclear instrumentation and measurements, but also in nuclear medicine and radiation. The conference is all about getting scientists, engineers and the industry to meet, exchange cultures and identify new scientific and technical prospects to help overcome both current and future unresolved issues. The conference provides scientists and engineers with a veritable opportunity to compare their latest research and development in different areas: physics, nuclear energy, nuclear fuel cycle, safety, security, future energies (GEN III+, GENIV, ITER, ...). The conference topics include instrumentation and measurement methods for: Fundamental physics; Fusion diagnostics and technology; Nuclear power reactors; Research reactors; Nuclear fuel cycle; Decommissioning, dismantling and remote handling; Safeguards, homeland security; Severe accident monitoring; Environmental and medical sciences; Education, training and outreach. This document brings together the abstracts of the presentations. Each presentation (full paper) is analysed separately and entered in INIS

  13. SENSE 2010, Abstracts

    The microscopic origin of unconventional superconductivity continues to attract the attention of the condensed matter community. Whereas rare-earth / actinide-based intermetallic and copper oxide-based high temperature superconductors are studied for more than twenty years, the iron-based superconductors have been in the focus of interest since their recent discovery. Inelastic neutron scattering experiments have been of particular importance for the understanding of the magnetic and superconducting properties of these compounds. With its 29 talks and 14 posters the workshop provided a forum for the 71 registered participants to review and discuss experimental achievements, recognize the observed synergy and differences as well as discuss theoretical efforts to identify the symmetry of the superconducting order parameter in addition to the coupling mechanisms of the Cooper pairs. The workshop covered different topics relevant for the study of unconventional superconductivity. Magnetization and lattice dynamics such as spin resonances, phonons, magnetic and other excitations as studied by spectroscopic methods were presented. Investigations of (doping, pressure and magnetic field dependent) phase diagrams, electronic states as well as vortex physics by the various diffraction techniques were also addressed. This document gathers only the abstracts of the papers. (authors)

  14. Thermal conductivity of boron carbide-boron nitride composites

    This paper reports that because of their preferred orientation, the addition of boron nitride dispersions to hot-pressed boron carbide was found to result in a considerable degree of anisotropy in thermal conductivity of the resulting composite, indicated by an increase in the thermal conductivity perpendicular to the hot-pressing direction by as much as a factor of 3 at the highest boron nitride volume fractions of this study, and a decrease in the thermal conductivity parallel to the hot-pressing direction by as much as a factor of 2. The composite data were found to be below the values expected from composite theory, which may represent indirect evidence for the existence of an interfacial thermal barrier

  15. Polyethylene/boron-containing composites for radiation shielding

    Shin, Ji Wook [Center for Materials Architecturing, Institute for Multi-Disciplinary Convergence of Materials, Korea Institute of Science and Technology (KIST), Seoul 136-791 (Korea, Republic of); Department of Chemical and Biological Engineering, Korea University, Seoul 136-701 (Korea, Republic of); Lee, Jang-Woo; Yu, Seunggun; Baek, Bum Ki; Hong, Jun Pyo [Center for Materials Architecturing, Institute for Multi-Disciplinary Convergence of Materials, Korea Institute of Science and Technology (KIST), Seoul 136-791 (Korea, Republic of); Seo, Yongsok [School of Materials Science and Engineering, Seoul National University, Seoul 151-744 (Korea, Republic of); Kim, Woo Nyon [Department of Chemical and Biological Engineering, Korea University, Seoul 136-701 (Korea, Republic of); Hong, Soon Man, E-mail: smhong@kist.re.kr [Center for Materials Architecturing, Institute for Multi-Disciplinary Convergence of Materials, Korea Institute of Science and Technology (KIST), Seoul 136-791 (Korea, Republic of); Nanomaterials Science and Engineering, University of Science and Technology, Daejeon 305-350 (Korea, Republic of); Koo, Chong Min, E-mail: koo@kist.re.kr [Center for Materials Architecturing, Institute for Multi-Disciplinary Convergence of Materials, Korea Institute of Science and Technology (KIST), Seoul 136-791 (Korea, Republic of); Nanomaterials Science and Engineering, University of Science and Technology, Daejeon 305-350 (Korea, Republic of)

    2014-06-01

    Graphical abstract: - Highlights: • HDPE/silane-treated boron nitride (mBN) composites were fabricated. • The HDPE/mBN composites revealed a strong adhesion behavior at the interface of matrix/filler. • The HDPE/mBN composites show superior radiation shielding, thermoconductive and mechanical properties to the composites containing pristine BN and B{sub 4}C fillers. - Abstract: High-density polyethylene (HDPE) composites with modified boron nitride (mBN) fillers, functionalized with an organosilane, were fabricated through conventional melt-extrusion processing techniques. The properties and performances of these composites were compared with those of the composites containing pristine BN and boron carbide (B{sub 4}C) fillers. The silane functionalization of the BN fillers strongly improved the interfacial adhesion between the polymer matrix and the filler. As a result, the HDPE/mBN composites showed a better dispersion state of the filler particles, larger tensile modulus, greater effective thermal conductivity, and better neutron shielding property compared with the HDPE/BN and HDPE/B{sub 4}C composites.

  16. Study the gas sensing properties of boron nitride nanosheets

    Sajjad, Muhammad; Feng, Peter, E-mail: p.feng@upr.edu

    2014-01-01

    Graphical abstract: - Highlights: • We synthesized boron nitride nanosheets (BNNSs) on silicon substrate. • We analyzed gas sensing properties of BNNSs-based gas-sensor device. • CH{sub 4} gas is used to measure gas-sensing properties of the device. • Quick response and recovery time of the device is recorded. • BNNSs showed excellent sensitivity to the working gas. - Abstract: In the present communication, we report on the synthesis of boron nitride nanosheets (BNNSs) and study of their gas sensing properties. BNNSs are synthesized by irradiating pyrolytic hexagonal boron nitride (h-BN) target using CO{sub 2} laser pulses. High resolution transmission electron microscopic measurements (HRTEM) revealed 2-dientional honeycomb crystal lattice structure of BNNSs. HRTEM, electron diffraction, XRD and Raman scattering measurements clearly identified h-BN. Gas sensing properties of synthesized BNNSs were analyzed with prototype gas sensor using methane as working gas. A systematic response curve of the sensor is recorded in each cycle of gas “in” and “out”; suggesting excellent sensitivity and high performance of BNNSs-based gas-sensor.

  17. Mono- and di-cationic hydrido boron compounds.

    Ghadwal, Rajendra S; Schürmann, Christian J; Andrada, Diego M; Frenking, Gernot

    2015-08-28

    Brønsted acid HNTf2 (Tf = SO2CF3) mediated dehydrogenative hydride abstraction from (L(1))BH3 () and (L(2))BH3 () (L(1) = IPrCH2 = 1,3-(2,6-di-isopropylphenyl)imidazol-2-methylidene (); L(2) = SIPrCH2 = 1,3-(2,6-di-isopropylphenyl)imidazolidin-2-methylidiene ()) affords thermally stable hydride bridged mono-cationic hydrido boron compounds [{(L(1))BH2}2(μ-H)](NTf2) () and [{(L(2))BH2}2(μ-H)](NTf2) (). Furthermore, hydride abstraction yields di-cationic hydrido boron compounds [{(L(1))BH}2(μ-H)2](NTf2)2 () and [{(L(2))BH}2(μ-H)2](NTf2)2 (). Unique cationic boron compounds with CH2BH2(μ-H)BH2CH2 ( and ) and CH2BH(μ-H)2BHCH2 ( and ) moieties feature a 3c-2e bond and have been fully characterized. Interesting electronic and structural features of compounds are analysed using spectroscopic, crystallographic, and computational methods. PMID:26200103

  18. The boron trifluoride nitromethane adduct

    Ownby, P. Darrell

    2004-02-01

    The separation of the boron isotopes using boron trifluoride·organic-donor, Lewis acid·base adducts is an essential first step in preparing 10B enriched and depleted crystalline solids so vital to nuclear studies and reactor applications such as enriched MgB 2, boron carbide, ZrB 2, HfB 2, aluminum boron alloys, and depleted silicon circuits for radiation hardening and neutron diffraction crystal structure studies. The appearance of this new adduct with such superior properties demands attention in the continuing search for more effective and efficient means of separation. An evaluation of the boron trifluoride nitromethane adduct, its thermodynamic and physical properties related to large-scale isotopic separation is presented. Its remarkably high separation factor was confirmed to be higher than the expected theoretical value. However, the reportedly high acid/donor ratio was proven to be an order of magnitude lower. On-going research is determining the crystal structure of deuterated and 11B enriched 11BF 3·CD 3NO 2 by X-ray and neutron diffraction.

  19. Boron carbide nanolumps on carbon nanotubes

    Lao, J. Y.; Li, W. Z.; Wen, J. G.; Ren, Z. F.

    2002-01-01

    Boron carbide nanolumps are formed on the surface of multiwall carbon nanotubes by a solid-state reaction between boron and carbon nanotubes. The reaction is localized so that the integrity of the structure of carbon nanotubes is maintained. Inner layers of multiwall carbon nanotubes are also bonded to boron carbide nanolumps. These multiwall carbon nanotubes with boron carbide nanolumps are expected to be the ideal reinforcing fillers for high-performance composites because of the favorable morphology.

  20. Abstraction of Drift Seepage

    J.T. Birkholzer

    2004-11-01

    This model report documents the abstraction of drift seepage, conducted to provide seepage-relevant parameters and their probability distributions for use in Total System Performance Assessment for License Application (TSPA-LA). Drift seepage refers to the flow of liquid water into waste emplacement drifts. Water that seeps into drifts may contact waste packages and potentially mobilize radionuclides, and may result in advective transport of radionuclides through breached waste packages [''Risk Information to Support Prioritization of Performance Assessment Models'' (BSC 2003 [DIRS 168796], Section 3.3.2)]. The unsaturated rock layers overlying and hosting the repository form a natural barrier that reduces the amount of water entering emplacement drifts by natural subsurface processes. For example, drift seepage is limited by the capillary barrier forming at the drift crown, which decreases or even eliminates water flow from the unsaturated fractured rock into the drift. During the first few hundred years after waste emplacement, when above-boiling rock temperatures will develop as a result of heat generated by the decay of the radioactive waste, vaporization of percolation water is an additional factor limiting seepage. Estimating the effectiveness of these natural barrier capabilities and predicting the amount of seepage into drifts is an important aspect of assessing the performance of the repository. The TSPA-LA therefore includes a seepage component that calculates the amount of seepage into drifts [''Total System Performance Assessment (TSPA) Model/Analysis for the License Application'' (BSC 2004 [DIRS 168504], Section 6.3.3.1)]. The TSPA-LA calculation is performed with a probabilistic approach that accounts for the spatial and temporal variability and inherent uncertainty of seepage-relevant properties and processes. Results are used for subsequent TSPA-LA components that may handle, for example, waste package

  1. Book of abstracts

    The document contains abstracts of 24 review papers, 24 invited papers, 24 oral contributions and 120 posters. 10 review papers summarize the status of laser fusion research and progress in high-power laser facilities in major world laboratories. Four papers review research programs (laser-matter interaction studies and X-ray source development) based on KrF laser systems. Other review papers discuss the problems of laser energy conversion into X-rays in laser-heated cavities, X-ray lasing at shorter wavelengths, optimization of targets for inertial fusion. Two review papers are devoted to light ion fusion. The subjects of most invited papers are special problems of current laser plasma research, such as hot electron generation, nonlinear resonance absorption, energy accumulation limits, pellet ignition, conversion of laser light into X-rays, high-pressure plasma generation. Three invited papers review laser plasma research in Czechoslovakia, Poland and Spain. One paper suggests a new method of producing muonic superdense matter. The remaining inivited papers deal with the progress in XUV lasers and with laser plasma applications for further laser development. Of the papers accepted for oral presentation 12 papers discuss various problems of laser-plasma interaction; 4 papers deal with laser targets, 4 papers with laser-initiated X-ray sources, 3 papers with the diagnostics of laser-produced plasma. The last oral contribution presents the main principles of the excimer laser theory. The largest group of posters is related to laser-plasma interaction and energy absorption problems, to laser-target interaction and various methods of laser plasma diagnostics. The other posters deal with plasma applications in laser development, plasma mirrors, Brillouin and Raman scattering, X-ray emission, harmonic generation, electron acceleration, production of high-Z plasmas and other related problems. (J.U.)

  2. NEW ADVANCES IN BORON SOIL CHEMISTRY

    Boron is an essential micronutrient element required for plant growth. Boron deficiency is wide-spread in crop plants throughout the world especially in coarse-textured soils in humid areas. Boron toxicity can also occur, especially in arid regions under irrigation. Plants respond directly to the...

  3. Dealing With Abstraction: Reducing Abstraction in Teaching (RAiT)

    Subedi, Krishna Prasad

    2014-01-01

    One of the most important challenges for mathematics teachers involves dealing with mathematical abstraction, specifically; figuring out efficient ways to translate abstract concepts into more easily understandable ideas for their students. Reducing abstraction is one of the theoretical frameworks originally proposed by Hazzan (1991) to examine how learners deal with mathematical abstraction while working with new mathematical tasks or concepts. However, very little is known about how teache...

  4. Green synthesis of boron doped graphene and its application as high performance anode material in Li ion battery

    Sahoo, Madhumita; Sreena, K.P.; Vinayan, B.P.; Ramaprabhu, S., E-mail: ramp@iitm.ac.in

    2015-01-15

    Graphical abstract: Boron doped graphene (B-G), synthesized by simple hydrogen induced reduction technique using boric acid as boron precursor, have more uneven surface as a result of smaller bonding distance of boron compared to carbon, showed high capacity and high rate capability compared to pristine graphene as an anode material for Li ion battery application. - Abstract: The present work demonstrates a facile route for the large-scale, catalyst free, and green synthesis approach of boron doped graphene (B-G) and its use as high performance anode material for Li ion battery (LIB) application. Boron atoms were doped into graphene framework with an atomic percentage of 5.93% via hydrogen induced thermal reduction technique using graphite oxide and boric acid as precursors. Various characterization techniques were used to confirm the boron doping in graphene sheets. B-G as anode material shows a discharge capacity of 548 mAh g{sup −1} at 100 mA g{sup −1} after 30th cycles. At high current density value of 1 A g{sup −1}, B-G as anode material enhances the specific capacity by about 1.7 times compared to pristine graphene. The present study shows a simplistic way of boron doping in graphene leading to an enhanced Li ion adsorption due to the change in electronic states.

  5. Boron doping a semiconductor particle

    Stevens, Gary Don; Reynolds, Jeffrey Scott; Brown, Louanne Kay

    1998-06-09

    A method (10,30) of boron doping a semiconductor particle using boric acid to obtain a p-type doped particle. Either silicon spheres or silicon powder is mixed with a diluted solution of boric acid having a predetermined concentration. The spheres are dried (16), with the boron film then being driven (18) into the sphere. A melt procedure mixes the driven boron uniformly throughout the sphere. In the case of silicon powder, the powder is metered out (38) into piles and melted/fused (40) with an optical furnace. Both processes obtain a p-type doped silicon sphere with desired resistivity. Boric acid is not a restricted chemical, is inexpensive, and does not pose any special shipping, handling, or disposal requirements.

  6. Shear amorphization of boron suboxide

    We report for the first time the shear-induced local amorphization of boron suboxide subjected to nanoindentation. The amorphous bands have a width of ∼1–3 nm and a length of 200–300 nm along the (01¯11) crystal plane. We show direct experimental evidence that the amorphous shear bands of boron suboxide are driven from the coalescence of dislocation loops under high shear stresses. These observations provide insights into the microscopic deformation and failure of high-strength and lightweight ceramics

  7. Boron steel. I Part. Preparation

    With the advent of the first nuclear reactors arise the need for control rods and shielding duties for some types of radiations. One of the materials used for this purpose has been the high boron steel. This paper describes the melting and casting procedures employed for the production, at laboratory scale, of steels with Boron content ranging from 1 to 4 per cent, as well as the metallographic and X-Ray techniques used for the identification of the present phases. The electrolytic technique employed for the isolation of the Fe2B phase and its subsequent X-Ray identification has proved to be satisfactory. (Author) 11 refs

  8. Thermal conductivity of boron carbides

    Wood, C.; Emin, D.; Gray, P. E.

    1985-01-01

    Knowledge of the thermal conductivity of boron carbide is necessary to evaluate its potential for high-temperature thermoelectric energy conversion applications. Measurements have been conducted of the thermal diffusivity of hot-pressed boron carbide BxC samples as a function of composition (x in the range from 4 to 9), temperature (300-1700 K), and temperature cycling. These data, in concert with density and specific-heat data, yield the thermal conductivities of these materials. The results are discussed in terms of a structural model that has been previously advanced to explain the electronic transport data. Some novel mechanisms for thermal conduction are briefly discussed.

  9. Mechanical properties of boron coatings

    Internal stress of coatings will cause reliability problems, such as adhesion failure and peeling. We measured the internal stress in boron coatings, which was prepared by the ion plating method, with an apparatus based on the optically levered laser technique. The boron coatings exhibited large compressive stress in the range from -0.5 GPa to -2.6 GPa. It was found that these compressive stresses were decreasing functions of the deposition rate and were increasing functions of the ion bombardment energy. ((orig.))

  10. Recent abstracts in biochemical technology

    R R Siva Kiran; Brijesh P

    2008-01-01

    “Recent abstracts in biochemical technology” is a collection of interesting research articles published in “List of biochemical technology journals” (Table 1). The abstracts are most likely to report significant results in biochemical technology.

  11. Contents and structure of abstracts

    Nemecková, Lenka; Dobrovolný, Viktor; Šauperl, Alenka; Jamar, Nina; Veselá, Eliška

    2015-01-01

    Purpose - Publishers of some scientific journals and the ISO standard require or recommend specific information to be present in abstracts. However little is known whether this is what scientists give when they write abstracts. The structure of abstracts was tested in Czech, Slovenian and international scientific journals in the English language in the areas of library and information science and materials science. Design/methodology/approach - One hundred research paper abstracts were select...

  12. Boron-enhanced diffusion of boron from ultralow-energy boron implantation

    The authors have investigated the diffusion enhancement mechanism of BED (boron enhanced diffusion), wherein the boron diffusivity is enhanced three to four times over the equilibrium diffusivity at 1,050 C in the proximity of a silicon layer containing a high boron concentration. It is shown that BED is associated with the formation of a fine-grain polycrystalline silicon boride phase within an initially amorphous Si layer having a high B concentration. For 0.5 keV B+, the threshold implantation dose which leads to BED lies between 3 x 1014 and of 1 x 1015/cm-2. Formation of the shallowest possible junctions by 0.5 keV B+ requires that the implant dose be kept lower than this threshold

  13. Analytical boron diffusivity model in silicon for thermal diffusion from boron silicate glass film

    Kurachi, Ikuo; Yoshioka, Kentaro

    2015-09-01

    An analytical boron diffusivity model in silicon for thermal diffusion from a boron silicate glass (BSG) film has been proposed in terms of enhanced diffusion due to boron-silicon interstitial pair formation. The silicon interstitial generation is considered to be a result of the silicon kick-out mechanism by the diffused boron at the surface. The additional silicon interstitial generation in the bulk silicon is considered to be the dissociation of the diffused pairs. The former one causes the surface boron concentration dependent diffusion. The latter one causes the local boron concentration dependent diffusion. The calculated boron profiles based on the diffusivity model are confirmed to agree with the actual diffusion profiles measured by secondary ion mass spectroscopy (SIMS) for a wide range of the BSG boron concentration. This analytical diffusivity model is a helpful tool for p+ boron diffusion process optimization of n-type solar cell manufacturing.

  14. Interfacing microbiology and biotechnology. Conference abstracts

    Maupin, Julia A.

    2001-05-19

    The Interfacing Microbiology and Biotechnology Conference was attended by over 100 faculty, post-docs, students, and research scientists from the US, Europe, and Latin America. The conference successfully stimulated communication and the dissemination of knowledge among scientists involved in basic and applied research. The focus of the conference was on microbial physiology and genetics and included sessions on C1 metabolism, archaeal metabolism, proteases and chaperones, gene arrays, and metabolic engineering. The meeting provided the setting for in-depth discussions between scientists who are internationally recognized for their research in these fields. The following objectives were met: (1) The promotion of interaction and future collaborative projects among scientists involved in basic and applied research which incorporates microbial physiology, genetics, and biochemistry; (2) the facilitation of communication of new research findings through seminars, posters, and abstracts; (3 ) the stimulation of enthusiasm and education among participants including graduate and undergraduate students.

  15. Interfacing microbiology and biotechnology. Conference abstracts

    The Interfacing Microbiology and Biotechnology Conference was attended by over 100 faculty, post-docs, students, and research scientists from the US, Europe, and Latin America. The conference successfully stimulated communication and the dissemination of knowledge among scientists involved in basic and applied research. The focus of the conference was on microbial physiology and genetics and included sessions on C1 metabolism, archaeal metabolism, proteases and chaperones, gene arrays, and metabolic engineering. The meeting provided the setting for in-depth discussions between scientists who are internationally recognized for their research in these fields. The following objectives were met: (1) The promotion of interaction and future collaborative projects among scientists involved in basic and applied research which incorporates microbial physiology, genetics, and biochemistry; (2) the facilitation of communication of new research findings through seminars, posters, and abstracts; (3) the stimulation of enthusiasm and education among participants including graduate and undergraduate students

  16. Analysis of boronized wall in LHD

    Boronization has been carried out in some experimental fusion devices as one of wall conditioning Methods. The well-known merits of the boronization are as follows: 1) coated-boron on the first wall has strong gettering function for oxygen impurities and oxygen has been kept into boron films as a boron-oxide and 2) boron film covers first wall with apparently low Z materials facing the plasma. However, an operation scenario of boronization for next generation devices such as ITER is not optimized. In this paper, we discuss an optimized method of coated film uniformity in a wide area and a lifetime of boron film as an oxygen getter using experimental data in the large helical device (LHD). In LHD, boronization by glow discharges has been carried out a few times during each experimental campaign. Helium-diborane mixtured gas is used and plasma facing components (PFM) are stainless steel (SS) for the first wall and carbon for the divertor plates kept in the room temperature. Material probes made of SS316 and Si were installed in the vacuum vessel and exposed during the experimental campaign. Depth profiles of their impurities were analyzed using the X-ray Photoelectron Spectroscopy (XPS) and the Auger electron spectroscopy (AES). Two types of gettering process by boron film have been investigated. One is the process during boronization and the other is that after boronization. Concerning a lifetime of boron film, the distribution of oxygen near the top surface region (0 to 20 nm) indicates a process of oxygen gettering, it shows a contribution after boronization. In this paper, these kinds of process using material probes are shown. (authors)

  17. Boron sorption characteristics in resins

    The purpose of boron addition in a nuclear power plant is to control the reactivity. In PHWRs, it is injected into the moderator system in the form of boric anhydride solution, while in PHWRs, it is added to the primary heat transport system in the form of boric acid solution. The required boron levels in PHWRs are controlled by valving in strong base anion exchangers having exchangeable species in OD- form while in PHWRs, the same can be achieved by restoring to the use of Boron Thermal Regeneration System (BTRS). This system operates on the principle of existence of different amounts of various polyborate ions at different temperatures, solution pH's and the boric acid concentrations and on the reversible sorption of these polyions on strong base anion exchange resins. This report describes the salient features of boron sorption characteristics on four types of anion exchange resins, based on experimental data generated in the chemical laboratories of Reactor Engineering Division of the Bhabha Atomic Research Centre, Bombay. The report further makes an attempt to calculate the pH of the resin and solution phases and the percentages of different polyborates and undissociated boric acid, under the experimental conditions investigated. (author). 30 refs., 4 figs., 20 tables

  18. Boron isotopes in geothermal systems

    Boron is a highly mobile element and during water-rock reactions, boron is leached out of rocks with no apparent fractionation. In geothermal systems where the water recharging the systems are meteoric in origin, the B isotope ratio of the geothermal fluid reflects the B isotope ratio of the rocks. Seawater has a distinctive B isotope ratio and where seawater recharges the geothermal system, the B isotope ratio of the geothermal system reflects the mixing of rock derived B and seawater derived B. Any deviations of the actual B isotope ratio of a mixture reflects subtle differences in the water-rock ratios in the cold downwelling limb of the hydrothermal system. This paper will present data from a variety of different geothermal systems, including New Zealand; Iceland; Yellowston, USA; Ibusuki, Japan to show the range in B isotope ratios in active geothermal systems. Some of these systems show well defined mixing trends between seawater and the host rocks, whilst others show the boron isotope ratios of the host rock only. In geothermal systems containing high amounts of CO2 boron isotope ratios from a volatile B source can also be inferred. (auth)

  19. Boron Poisoning of Plutonium Solutions

    The results of a theoretical investigation into the possible relaxation of criticality concentration limits in wet chemical reprocessing plants, due to the introduction of boron poisoning, are reported. The following systems were considered: 1. 1 in. stainless steel tubes filled with boron carbide at various pitches in homogeneous mixtures of 239Pu (NO3)4, 5H2O and water. 2. 1 in. and 2 in borosilicate glass Raschig rings in homogeneous mixtures of 239Pu (NO3)4, 5H2O and water. 3. The concentration of natural boron required for k∞ = 1 in homogeneous mixtures of 239Pu-B-H2O. The method of calculation was Monte Carlo using the GEM code with Nuclear Data File cross-sections. The Raschig rings used are those commercially available. The core model consisted of a cubic arrangement of unit cubes of solution within each of which a Raschig ring was centrally placed. The arrangement was such that the rings were regularly stacked with axes parallel, but the side of the unit cube was fixed to preserve the random packing density. Comparison is made with other reported results on boron poisoning. (author)

  20. Advanced microstructure of boron carbide.

    Werheit, Helmut; Shalamberidze, Sulkhan

    2012-09-26

    The rhombohedral elementary cell of the complex boron carbide structure is composed of B(12) or B(11)C icosahedra and CBC, CBB or B□B (□, vacancy) linear arrangements, whose shares vary depending on the actual chemical compound. The evaluation of the IR phonon spectra of isotopically pure boron carbide yields the quantitative concentrations of these components within the homogeneity range. The structure formula of B(4.3)C at the carbon-rich limit of the homogeneity range is (B(11)C) (CBC)(0.91) (B□B)(0.09) (□, vacancy); and the actual structure formula of B(13)C(2) is (B(12))(0.5)(B(11)C)(0.5)(CBC)(0.65)(CBB)(0.16) (B□B)(0.19), and deviates fundamentally from (B(12))CBC, predicted by theory to be the energetically most favourable structure of boron carbide. In reality, it is the most distorted structure in the homogeneity range. The spectra of (nat)B(x)C make it evident that boron isotopes are not randomly distributed in the structure. However, doping with 2% silicon brings about a random distribution. PMID:22945740

  1. Raman spectroscopy of boron carbides and related boron-containing materials

    Raman spectra of crystalline boron, boron carbide, boron arsenide (B12As2), and boron phosphide (B12P2) are reported. The spectra are compared with other boron-containing materials containing the boron icosahedron as a structural unit. The spectra exhibit similar features some of which correlate with the structure of the icosahedral units of the crystals. The highest Raman lines appear to be especially sensitive to the B-B distance in the polar triangle of the icosahedron. Such Raman structural markers are potentially useful in efforts to tailor electronic properties of these high temperature semiconductors and thermoelectrics

  2. Improving the electrochemical properties of nanosized LiFePO4-based electrode by boron doping

    Highlights: • Thermal treatment of boron phosphate with LiFePO4 provides electrode materials with high performance in lithium half-cells: 160 mAh·g-1 (90% of theoretical capacity) under C/5 rate • The products are composites containing boron-modified LiFePO4, FePO4 and an amorphous phase with ionic diffusion properties • The boron treatment affects textural, conductive and lithium diffusivity of the electrode material leading to higher performance • A limited boron-doping of the phospholivine structure is observed - Abstract: Electrode materials with homogeneous distribution of boron were obtained by heating mixtures of nanosized carbon-coated lithium iron phosphate and BPO4 in 3-9% weight at 700 °C. The materials can be described as nanocomposites containing i) LiFePO4, possibly doped with a low amount of boron, ii) FePO4 and iii) an amorphous layer based on Li4P2O7-derived material that surrounds the phosphate particles. The thermal treatment with BPO4 also triggered changes in the carbon coating graphitic order. Galvanostatic and voltammetric studies in lithium half-cells showed smaller polarisation, higher capacity and better cycle life for the boron-doped composites. For instance, one of the solids, called B6-LiFePO4, provided close to 150 and 140 mAhg-1 (87% and 81% of theoretical capacity, respectively) under C/2.5 and C regimes after several cycles. Improved specific surface area, carbon graphitization, conductivity and lithium ion diffusivity in the boron-doped phospholivine network account for this excellent rate performance. The properties of an amorphous layer surrounding the phosphate particles also account for such higher performance

  3. Enhanced boronizing kinetics of alloy steel assisted by surface mechanical attrition treatment

    Highlights: • Nanostructured surface layer is fabricated on H13 steel assisted by SMAT. • The boronizing kinetics of SMAT sample can be enhanced remarkably. • Borided layer can delay fatigue cracks initiation and impede their propagation. -- Abstract: A nanostructured surface layer was fabricated on AISI H13 steel by means of surface mechanical attrition treatment (SMAT). Boronizing behaviors of the SMAT samples were systematically investigated in comparison with their coarse-grained counterparts. The boron diffusion depth of the SMAT sample with pack boriding treatment at 600 °C for 2 h was about 8 μm, which was much deeper than that of the coarse-grained sample. A much thicker borided layer on the SMAT sample can be synthesized by a duplex boronizing treatment at 600 °C followed by at a higher temperature. The borided layer was composed with monophase of Fe2B and the growth of it exhibited a (0 0 2) preferred orientation. Moreover, the activation energy of boron diffusion for the SMAT sample is 140.3 kJ/mol, which is much lower than 209.4 kJ/mol for the coarse-grained counterpart. The results indicate that the boronizing kinetics can be significantly enhanced in the SMAT sample with a duplex boronizing treatment. Furthermore, the thermal fatigue tests show that the borided layer with excellent oxidation resistance and mechanical strength at elevated temperatures could effectively delay the thermal fatigue cracks initiation and impede their propagation. Therefore, the thermal fatigue property of H13 steel with a duplex boronizing treatment can be improved remarkably

  4. Determination of the critical conditions for the initiation of dynamic recrystallization in boron microalloyed steels

    Research highlights: → Critical conditions for the DRX onset of boron microalloyed steels are determined. → σc and εc tend to increase as strain rate increases and temperature decreases. → σc and εc tend to decrease as boron content increases. → Critical ratios σc/σp and εc/εp remain fairly constant (∼0.82 and ∼0.53). → Boron additions promote solid solution softening and acceleration of the DRX onset. - Abstract: From the present research, the critical conditions associated with the onset of dynamic recrystallization (DRX) of hot deformed boron microalloyed steels were precisely determined based on changes in the strain hardening rate (θ) as a function of the flow stress. For this purpose, a low carbon steel microalloyed with four different amounts of boron (29, 49, 62 and 105 ppm) was deformed by uniaxial hot-compression tests at high temperature (950, 1000, 1050 and 1100 deg. C) and constant true strain rate (10-3, 10-2 and 10-1 s-1). Results indicate that the critical conditions for the initiation of dynamic recrystallization depend on the temperature and strain rate. In addition, both critical stress σc, and critical strain εc, were noticed to decrease as boron content increased. Such a behavior is attributed to a solute drag effect by boron atoms on the austenitic grain boundaries and also to a solid solution softening effect. The critical ratios σc/σp and εc/εp for all boron microalloyed steels remain fairly constant (∼0.82 and ∼0.53, respectively), such values are in agreement with those commonly reported for Al-killed, C-Mn, Nb, Nb-Ti, high carbon and stainless steels.

  5. Synthesis of boron suboxide (B6O) with ball milled boron oxide (B2O3) under lower pressure and temperature

    Boron reacted with ball milled boron oxide under pressures between 1 and 5 GPa and at temperatures between 1300 and 1700 oC to afford boron suboxide (B6O). Icosahedral B6O grains with diameters ranging from 100 nm to 1.3 μm were prepared. The factors that affect the synthesis of B6O are investigated. The best sample with crystal size up to 1.3 μm is obtained at 2 GPa and 1400 oC for 6 h. The indentation experiment gave an average Vickers hardness of 32.3 GPa for bulk B6O sample, which is consistent with previous reports. Bulk B6O sample exhibits oxidation resistance in air up to 1000 oC and mild oxidation in the temperatures of 1000-1200 oC, which is more oxidation resistant than diamond. It is possible that B6O could be used as a substitute for diamond in industry because of its relatively mild synthesis conditions, high thermal stability and high hardness. - Graphical abstract: Icosahedral B6O grains were prepared for mixtures of boron and ball milled boron oxide at 2 GPa and 1400 oC, a milder synthesis condition in comparison with previous works.

  6. Nuclear code abstracts (1975 edition)

    Nuclear Code Abstracts is compiled in the Nuclear Code Committee to exchange information of the nuclear code developments among members of the committee. Enlarging the collection, the present one includes nuclear code abstracts obtained in 1975 through liaison officers of the organizations in Japan participating in the Nuclear Energy Agency's Computer Program Library at Ispra, Italy. The classification of nuclear codes and the format of code abstracts are the same as those in the library. (auth.)

  7. Mechanical Engineering Department technical abstracts

    Denney, R.M. (ed.)

    1982-07-01

    The Mechanical Engineering Department publishes listings of technical abstracts twice a year to inform readers of the broad range of technical activities in the Department, and to promote an exchange of ideas. Details of the work covered by an abstract may be obtained by contacting the author(s). Overall information about current activities of each of the Department's seven divisions precedes the technical abstracts.

  8. Mechanical Engineering Department technical abstracts

    The Mechanical Engineering Department publishes listings of technical abstracts twice a year to inform readers of the broad range of technical activities in the Department, and to promote an exchange of ideas. Details of the work covered by an abstract may be obtained by contacting the author(s). Overall information about current activities of each of the Department's seven divisions precedes the technical abstracts

  9. Abstract Possible: The Birmingham Beat

    Bergman, Aeron; Salinas, Alejandra

    2013-01-01

    Gruppeutstilling. Samarbeidspartner: Alejandra Salinas. ABSTRACT YOUR SHIT IS Video loop and billboard. Eastside Projects, Birmingham UK Abstract Possible: The Birmingham Beat Curated by Maria Lind 6 October - 1 December 2012. Invited artists: José León Cerrillo, Zachary Formwalt, Goldin+Senneby, Wade Guyton, Yelena Popova, Alejandra Salinas and Aeron Bergman. Visningssted: Eastside Projects, Birmingham, UK. Se også: http://eastsideprojects.org/past/abstract-possible

  10. Synthesis of boron nitride nanotubes by boron ink annealing

    Ball-milling and annealing is one effective method for the mass production of boron nitride nanotubes (BNNTs). We report that the method has been modified to a boron (B) ink annealing method. In this new process, the nanosize ball-milled B particles are mixed with metal nitrate in ethanol to form an ink-like solution, and then the ink is annealed in nitrogen-containing gas to form nanotubes. The new method greatly enhances the yield of BNNTs, giving a higher density of nanotubes. These improvements are caused by the addition of metal nitrate and ethanol, both of which can strongly boost the nitriding reaction, as revealed by thermogravimetric analysis. The size and structure of BNNTs can be controlled by varying the annealing conditions. This high-yield production of BNNTs in large quantities enables the large-scale application of BNNTs.

  11. Synthesis of boron nitride nanotubes by boron ink annealing.

    Li, Lu Hua; Chen, Ying; Glushenkov, Alexey M

    2010-03-12

    Ball-milling and annealing is one effective method for the mass production of boron nitride nanotubes (BNNTs). We report that the method has been modified to a boron (B) ink annealing method. In this new process, the nanosize ball-milled B particles are mixed with metal nitrate in ethanol to form an ink-like solution, and then the ink is annealed in nitrogen-containing gas to form nanotubes. The new method greatly enhances the yield of BNNTs, giving a higher density of nanotubes. These improvements are caused by the addition of metal nitrate and ethanol, both of which can strongly boost the nitriding reaction, as revealed by thermogravimetric analysis. The size and structure of BNNTs can be controlled by varying the annealing conditions. This high-yield production of BNNTs in large quantities enables the large-scale application of BNNTs. PMID:20154372

  12. Synthesis of vinyl boronates from aldehydes by a practical boron-Wittig reaction.

    Coombs, John R; Zhang, Liang; Morken, James P

    2015-04-01

    A highly stereoselective boron-Wittig reaction between stable and readily accessible 1,1-bis(pinacolboronates) and aldehydes furnishes a variety of synthetically useful di- and trisubstituted vinyl boronate esters. PMID:25799147

  13. Lupus Foundation of America

    ... You. Learn More About the Lupus Foundation of America We are devoted to solving the mystery of ... Support for Lupus Research The Lupus Foundation of America applauds the U.S. Senate Appropriations Committee for voting ...

  14. Sarcoma Foundation of America

    ... Mission The mission of the Sarcoma Foundation of America (SFA) is to advocate for sarcoma patients by ... behalf of everyone at the Sarcoma Foundation of America (SFA),THANK YOU! The Celebration of Life drew ...

  15. America's Young Adults

    ... About the Forum | Publications | Data Sources | Help Search America's Children: Key National Indicators of Well-Being, 2015 ... Care Quality List of Tables List of Figures America's Children at a Glance Forum Agencies Data Source ...

  16. America's Blood Centers

    ... or less. Please donate now! Full Stoplight Report America's Blood Centers is... FEATURED TODAY Support the Foundation ... purchase will be donated to the Foundation for America's Blood Centers! Simply Click Here! "We Are" This ...

  17. Synthesis of Boron Nanowires, Nanotubes, and Nanosheets

    Rajen B. Patel

    2015-01-01

    Full Text Available The synthesis of boron nanowires, nanotubes, and nanosheets using a thermal vapor deposition process is reported. This work confirms previous research and provides a new method capable of synthesizing boron nanomaterials. The materials were made by using various combinations of MgB2, Mg(BH42, MCM-41, NiB, and Fe wire. Unlike previously reported methods, a nanoparticle catalyst and a silicate substrate are not required for synthesis. Two types of boron nanowires, boron nanotubes, and boron nanosheets were made. Their morphology and chemical composition were determined through the use of scanning electron microscopy, transmission electron microscopy, and electron energy loss spectroscopy. These boron-based materials have potential for electronic and hydrogen storage applications.

  18. Microwave sintering of boron carbide composites

    Boron carbide is an important ceramic material because of its high hardness and low specific gravity. it is used for applications involving impact and wear resistance. The disadvantages of boron carbide materials are difficulty in fabrication and sensitivity to brittle fracture. These problems are significantly reduced by production of cermets based on boron carbide and aluminum or aluminum alloys. Microwave heating of boron carbide materials results in ultrarapid heating and high temperatures. Therefore, a finer microstructure is obtained. The objective of this work was to define a technology that would allow the manufacture of boron carbide ceramics having mechanical properties similar to those exhibited by hot-pressed specimens. microwave heating would be used for the densification step. Mixtures of boron carbide and aluminum were considered for this research because aluminum simultaneously acts as a sintering aid and introduces phases that contribute to toughness enhancement

  19. Prediction of boron carbon nitrogen phase diagram

    Yao, Sanxi; Zhang, Hantao; Widom, Michael

    We studied the phase diagram of boron, carbon and nitrogen, including the boron-carbon and boron-nitrogen binaries and the boron-carbon-nitrogen ternary. Based on the idea of electron counting and using a technique of mixing similar primitive cells, we constructed many ''electron precise'' structures. First principles calculation is performed on these structures, with either zero or high pressures. For the BN binary, our calculation confirms that a rhmobohedral phase can be stablized at high pressure, consistent with some experimental results. For the BCN ternary, a new ground state structure is discovered and an Ising-like phase transition is suggested. Moreover, we modeled BCN ternary phase diagram and show continuous solubility from boron carbide to the boron subnitride phase.

  20. Analysis of magnetron sputtered boron oxide films

    Buc, Dalibor [Slovak University of Technology in Bratislava (Slovakia); Bello, Igor [City University of Hong Kong, Kowloon, Hong Kong (China); Caplovicova, Maria [Comenius University in Bratislava (Slovakia); Mikula, Milan; Kovac, Jaroslav; Hotovy, Ivan [Slovak University of Technology in Bratislava (Slovakia); Chong, Yat Min [City University of Hong Kong, Kowloon, Hong Kong (China); Siu, Guei Gu [City University of Hong Kong, Kowloon, Hong Kong (China)], E-mail: apggsiu@cityu.edu.hk

    2007-10-15

    Boron oxide films were grown on silicon substrates by radio-frequency (rf) unbalanced magnetron sputtering of a boron target in argon-oxygen gas mixtures with different compositions. Microscopic analyses show that overall boron oxide films are amorphous. The film prepared at oxygen/argon flow rate ratio > 0.05 developed large crystallites of boric acid in localize areas of amorphous boron oxide matrices. These crystallites were unstable and at electron microscopic analysis they continuously transformed to a cubic HBO{sub 2} phase and then completely vanished leaving an underlying amorphous boron oxide film behind. The analyses indicate the coexistence of B{sub 6}O, HBO{sub 2} crystallites and amorphous boron oxide matrices. Fourier transform infrared (FTIR) spectra revealed spectral bands of BOH, BO, BOB and BH groups. Nanohardness and elastic modulus of a film prepared at low oxygen concentration approach 30 and 300 GPa, respectively. These parameters however vary with deposition conditions.

  1. ABSTRACTS

    2015-01-01

    Type-selection design of axle box bearing for high-speed passenger car bogie LIANG Yun, XIA Chun-jing (Changchun Railway Vehicle Co., Ltd., Chang- chun 130062, China) Abstract: This paper elaborates type-selection analysis of axle box bearings for high-speed passenger ear bogie and introduces the main influence factors of type- selection and life calculation of bearings.

  2. Abstracts

    2011-01-01

    Research of Theory & Method Miscible Flooding Well Test Model With Carbon Dioxide Injection and Its Pressure Analysis. 2011,20(4):1 -4 Zhu Jianwei, Shao Changjin, Liao Xinwei, Yang Zhenqing( China University of Petroleum (Beijing) ) Based on miscible flooding well test analysis theory with carbon dioxide injection, the diffusion model of mixture components when carbon dioxide miscible with the oil and variation law of the temperature and viscosity are analyzed,

  3. ABSTRACTS

    2012-01-01

    The modem transition of philosophy is the transition of world metaphysics to conscious metaphysics therefore the aprioristic philosophy exploring the consciousness has taken place which experienced the three progressing periods from Descartes to Kant to Edmund Husserl: Descartes tried to prove that consciousness was the unique and stable starting point of understanding all problems, and Kant tried to prove that consciousness had the ability to build up effec- tive knowledge as well as had the ability to guide the right behavior, while Edmund Husserl tried to prove that conscious- ness had the overall object, which relatively equal to had its own word. Through these three great and difficult periods of efforts, aprioristic conscious philosophy has completed the proving of the arguments of I think and thinking, nevertheless, the arguments did not reach to the level of laying the foundation, therefore they did not interpret the world correctly.

  4. ABSTRACTS

    2011-01-01

    Severe Damage of Absorbing Foreign Capital Must Be Correctly Observed Accelerating Transformation of Economic Development;Lenin Had Never Set Forth a "National Syndicate" Pattern;Talent Allocation for Undertaking Service Outsourcing of China;Preliminary Management for "Urban Disease" during British Industrialization;Comprehensive Review on Review on Risk Management of Sports Tourism in China;

  5. Abstract

    2011-01-01

    Fellow Townsman in Shanghai and Political Action During the Modern China YE Zhou There was an important change in fellow townsman' s political action in the modern China. Shanghai became the important center of fellow townsman and some ideas have been changed. This essay think although there was some new change in organization and ideas, but blood -geographical complex and political interest arrested the fellow society play a more important role in modem political activity.

  6. ABSTRACTS

    2012-01-01

    Summary of Construction of a Hz S-based Sulphuric Acid Unit for a Large-sized Synthetic Ammonia Plant/Development and Application of New Process for Yellow Phosphorus Filtration during Yellow Phosphorus Production/Review of the Low-temperature Heat Recovery System of 250 kt/a Sulpharic Acid Plant of Shandong Bofeng/Technology for Combined Production in Compound Phosphate Fertilizer Plant of SHCCIG/Practice of Fouling Removal with Sulphuric Acid in the Cooling Water System of 400 kt/aSulfuric Acid Plant Based on Sulphur Burning/Production of Nitro-compound Fertilizer with Nitric Acid and Sulphuric Acid Method/Application of Tantalum Heat Exchanger and Glass Equipment in Spent Sulphuric Acid Concentration

  7. ABSTRACTS

    2012-01-01

    Development and Application of Three-stage and Four-layer Fluorine Removal Technology for Purification of Smelting Flue Gas Removal of fluorine from fluorine-containing smelting gas during the sulphurie acid production provides effective protection for the equipment in the system, and it is al~ a necessary measure to maintain normal prodluetion. For the equipment features and resource conditions in a sulphuric acid plant, the concept of three-stage and four layer fluorine removal is proposed, and the purification technology for fluorine removal is developed through optimization of the process design. Practice has shown that by utilizing the three-stage and four-layer fluorine removal technology, it offers advantages like higher efficiency of fluorine removal, shorter process flow, less equipment investment, easier operation, and offers certain value for promotion.

  8. Abstracts

    2011-01-01

    Analyses and Suggestions on Coordinated Regional Development of Insurance Industry in China GUO Jin-long Abstract: Through studies on the coordinated development status between insurance industry and social economy in China from 2005 to 2009, it is found that the coordination between insurance and economy remains slightly imbalanced in most of the provinces and cities in China, with only a few provinces and cities showing low-degree coordination in 2007. As a whole,

  9. Abstract

    2012-01-01

    The Subject of Research, Methodology and Research Paradigm of ‘Das Kapital'; ‘Das Kapital' and the Scientific View of Marx on Wealth;The Way of Capitalism in the Background of Global Financial Crisis;

  10. ABSTRACTS

    2011-01-01

    Conbating Poverty and Inequality: Structural Change, Social Policy and Politics United Nations Research Institute for Social Development As UNRISD's latest reflection upon poverty alleviation and inequality, this report advocates an approach that pu

  11. ABSTRACTS

    2012-01-01

    Discussion on Geological Exploration Culture and Core Value System of Geological Exploration Industry PENG Qiming(Ministry of Land and Resources, Beijing 100812, China) Abstract: Since the convening of the Sixth Plenary Session of the Sixth Central Committee of the CPC, the function of soft power of culture construction has been attracted widespread attention. For geological industry, an important factor which restricts the development of this industry is the culture of geological prospecting, while the key point is to establish the core value system of geological exploration industry. This paper introduces the role of the core value system of geological exploration industry, these include: guiding the direction and trace of industry development; gathering strength and forming resultant force; setting up the confidence and determination of inspiration; and establishing professional and ethical standards and behaviors. This paper offers some specific methods required for developing the advanced culture of geological industry,

  12. ABSTRACTS

    2011-01-01

    Research on the Necessity of Building Intercity Transit System within Changsha-Zhuzhou-Xiangtan Metropolitan Huang Weili 4 To plan and build intercity transit network within Changsha-Zhuzhou-Xiangtan metropolitan will not only meet the rapidly increasing demand for passenger transport service and promoting the integration and urbanization of the metropolitan, but is also the necessary measures to build energy-saving and environmental-friendly society, and realize sustainable development.

  13. ABSTRACTS

    2011-01-01

    Current Situation and Prospect of Urban Transit Development in Mainland China The paper reviews the development of urban transit construction, networking operation and diversified technology systems in mainland China during the last 40 years. The paper also presents the short-term planning of urban transit in mainland China and the solutions for financing, construction period and operational cost etc.

  14. ABSTRACT

    Michelle de Stefano Sabino

    2011-12-01

    Full Text Available This paper aims to describe and to analyze the integration observed in the Sintonia project with respect to the comparison of project management processes to the model of the Stage-Gate ®. The literature addresses these issues conceptually, but lack an alignment between them that is evident in practice. As a method was used single case study. The report is as if the Sintonia project, developed by PRODESP - Data Processing Company of São Paulo. The results show the integration of project management processes with the Stage-Gate model developed during the project life cycle. The formalization of the project was defined in stages in which allowed the exploitation of economies of repetition and recombination to the development of new projects. This study contributes to the technical vision in dealing with the integration of project management processes. It was concluded that this system represents an attractive way, in terms of creating economic value and technological innovation for the organization.

  15. ABSTRACTS

    2012-01-01

    The Introduction of Western Learning to the East and the Sinicization of Marxist Philosophy The introduction of western learning to the east objectively promoted the dissemination of Marxist philosophy in China, forming an important historical prerequisite for the sinicization of Marxist philosophy. Moreover, it also triggered a great transformation in the historical development of Chinese philosophy and facilitated its transition from ancient to early modern traditions, thereby establishing through sinicization a link between Marxist philosophy, which originated in the western philosophical tradition, and the Chinese tradition of philosophy, and rendering Marxist philosophy Chinese. This offered the possibility that sinicized Marxist philosophy would play a positive guiding role in the development of modern Chinese philosophy. Therefore, we may say that without the introduction of western learning to the east, there would be no sinicization of Marxist Ichilosophy; and without in-depth research on the relationship between the introduction of western learning to the east and the sinicization of Marxist philosophy, there would be no real understanding of the sinicization of Marxist philosophy. However, the close links between the sinicization of Marxist philosophy and the introduction of western learning do not indicate that the sinicization of Marxist philosophy is part of the history of the introduction of western learning to the east. The sinicization of Marxist philosophy does not itself belong to the category of the spread of western learning to the east. This is because Marxist philosophy is essentially different from all other commonly known western sciences; its sinicization differs from the eastward spread of western learning in terms of its goals, social nature, results and effects on society.

  16. ABSTRACTS

    2011-01-01

    Balance and Loss of Balance in Human Rights Law;The Socialist Legal System with Chinese Characteristics: Its Structure, Features and Trends;Historical Materialism and Contemporary Socio-historical Reality;Rousseau, Kant and Marx in the Lineage of "Moral P

  17. ABSTRACTS

    2011-01-01

    Plato on Political Rhetoric Generally, Plato was regarded as being hostile to rhetoric. However, I will show that in Plato's some important political dialogues he still verifies the significance of rhetoric or persuasion. Then, I list the attacks of Plato on his contemporary rhetoric, which is called in the essay as "politician rhetoric". On the other hand, Plato also articu- lates the characteristics of true rlhetoric, which I name as "dialectical rhetoric. " In order to elaborate "dialectical rhetoric", I take Pericles as an example to show how the dialectic rhetoric could work in the real political world. Finally, I point out that dialectical rhetoric still can give some reflection for today's political rhetoric. It contains the ideal of the good, caring the soul of the audience, speaking the truth, insisting the right thing with reason, etc.

  18. ABSTRACTS

    2012-01-01

    QUALITY MANAGEMENT AND CONTROL DURING START- UP OF THE 1.0MT/A ETHYLENE PLANT IN ZHENHAI[ 1 ] Jiang Minding, Chang Mingkun. SINOPEC Zhenhai Refining & Chemical Company, Ningbo Zhejiang, P. C. 315207 Abstract: Zhenhai ethylene project was put into operation suc- cessfully in 2010, and rich project management experiences were accumulated during the preparation process. Strict project quality management during pipeline blowing, system hydrosta- tic testing, chemicals filling and preparation before drying - out of cracking furnace can eliminate the hidden dangers, and cold tightening of flanges in cryogenic section during startup can minimize flare discharge.

  19. Abstracts

    2012-01-01

    International Norms, Group Identity and Domestic Institutional Re- form: The Case of China's Entrance to FATF Lie Xinghua Abstract: International norms are the collection of binding rules governing the international community. International norms with high levels of legitimacy result in norm groups. Such norm groups directly affect the space for and effectiveness of behavior. In order to enter a norm group and obtain membership status within the group, states must engage in domestic institu- tional reforms in order to meet standards of admission. In order to enter FATF, China studied the principles of the 40+ 9 Recommendations, and ad- vanced comprehensive domestic reforms to counter money laundering.

  20. ABSTRACTS

    2011-01-01

    GIVE FULL PLAY TO THE ADVANTAGES OF REFINING-CHEMICAL INTEGRATION FOR THE EXPANSION OF PETROCHEMICAL DOWNSTREAM INDUSTRY CHAIN [ 1] Zhao Yan. CNOOC Huizhou Refining Company, Huizhou, Guangdong, 516086 Abstract: Taking the current situation of the petrochemical industry base which has taken shape in Huizhou Daya Bay Petrochemical Industrial Park into account, this paper frames up the development assumption of refining-chemical integration brought along by large-scale refining and ethylene projects in CNOOC and Shell Petrochemicals Company with such projects as flagship. It mainly analyzes the advantages and importance of constructing industry base with refining, ethylene, chemicals and fine chemicals in Petrochemical Industrial Park which extends the industry chain, broadens the petrochemical market of Pearl River Delta and boosts the core competence of the industrial park.

  1. Abstract

    2012-01-01

    Concept Construction and Empirical Analysis of Social Integration for Rural-Urban Migrants in China; Under the Dual Structure of the Triple Migration Model: A Shortage of Migrant Workers, a New Research Framework;Cultural Meanings of Chinese Guanxi: A Viewpoint of Management Scholars;Determinants of Banking Efficiency: Cross-Country Evidence;

  2. ABSTRACTS

    2012-01-01

    Be Independent from Autocracy: a Comparison Between Wang Yuanhua and Gong Zizhen Also on the Depth of Wang Yuanhua's Thinking on the Eve of the Ideological Emancipation Movement Xia Zhongyi In 1977 ,Wang Yuanhua began to appreciate Gong Zizhen, not only because they were similar in temperament, context and situation, but also because Wang Yuanhua had found out the element of personal liberation in Gong zizhen's saying Be Independent from Autocracy, which shows that Wang Yuanhua's realization of the personal value was earlier than Li Zehou ( who established the Subjectivity Outline in a Kant's Way in 1979 ) and Wang Ruoshui (who proposed that personal value is the basis of Marxism in 1981 ) , and Wang Yuanhua's contribution in study Chinese by Chinese experience.

  3. ABSTRACTS

    2011-01-01

    Energy transformation is the only way of the transformation of the world economy Describing and explaining from different view of the world from the angle of political, economic, cultural and environmental development, the presentation of the transformation, change, adjustment, conversion and a series of concept reflects that the current world situation is undergoing profound changes, multi-polarization and globalization. The global problems such as financial crisis, recession, climate change, energy transformation and the environment change,

  4. ABSTRACTS

    2012-01-01

    The wisdom of practice exists in its conceptual form as an inherent part of man and functions in the process of practice. It coheres as the quality of virtue expressed in value orientation and contains cognitive experience of the world and of man himself. The two permeate man's actual capacities or powers. Aiming at completion of the self and of things, the wisdom of practice integrates theoretical and practical reason and reflects the unity of understandinl~ the world and transforming the world.

  5. ABSTRACTS

    2011-01-01

    Critique of Contemporary Anti-Marxism Ideologies --Based on Thoughts of the "Four Major Boundaries";The Conflict on Public Ownership: A Comparison between the Socialist Market Economic Theory and the Theory of Market Socialism of British Labour Party;On The Germination of Marxist Theory of Property;Aesthetic Transformation of Mass Media for Socialist Core Value System;

  6. ABSTRACTS

    2012-01-01

    He Xinyin as a Confucian Reformer and His Worship of Confucius Abstract:This paper regards He Xinyin, a member of Taizhou School, as a reformer of Confucianism. The reform means to transforming traditional Confucianism which is inti- mately linked with political institution into an independently religious one. The conflicts between Confucian orthodoxy and politics in reality intensified after the Jia.-jing Period in the Ming Dynasty. He Xinyin carries forward his predecessor Wang Xinzhai's theory of "political involvement or retiring from political life", and constructs a set of Confucian in- stitutions, which is independent of politics. On the basis of respects and honors of Confu- cius, He Xinyin~s Confucian institutions enables people to respect and love each other, and makes Confucius~s benevolence and righteousness come true.

  7. ABSTRACTS

    2011-01-01

    The Relational Capital, the Institutional Environment and the Validity of the Payment by Fiscal Transfers;The Framing of the Clauses of the Company Regulations, the Protection of the Law for the Right of Investors, and the Company Governance: Evidences f

  8. ABSTRACTS

    2011-01-01

    Look in the Mirror of Personality Left by Liang Qichao The New Preface to His Reflecting Moral This article is my new foreword of Reflecting Moral, which had been edited and written by Liang Qichao in 1905, and has just been recommended as one of the moral readers of Tsinghua Academy of Chinese Learning. I point that the exhortation of our univer- sity proposed by Liang Qichao has its original determination in his mind himself, which had already been compiled in Reflecting Moral more than a century ago.

  9. Abstract

    2012-01-01

    The Characteristics of Modern Tianjin Salt Merchants Culture As a new commercial culture in modern China, Tianjin salt merchants culture has its own different characteristics, such as luxury consumption culture, political culture, religious scholar culture and moral culture. In these cultures behind embodies the Salter group's behavior pattern and psychological structure.

  10. ABSTRACTS

    2012-01-01

    Mao Zedong' s "Three World Theory" underwent three stages of development: the "One Intermediate Zone" thought, the embryonic form of the theory, was put forward in the 1940s-50s; the "Two Intermediate Zones" thought, taking shape in the 1960s, was the rudimentary form; and the early 1970s witnessed the perfection of the theory. Mao Zedong developed the "Three World Theory" with sovereignty and national interests as the logical starting point, the theory of unity of opposites as the philosophical foundation, the Cold War as the historical background, and fighting against hegemonism as the major diplomatic strategy.

  11. ABSTRACTS

    2012-01-01

    Fold distribution, offset distribution and azi- muth distribution in a bin have direct effects on ge- ometry attributes in 3D seismic survey design. If two adjacent bins have the same fold but different offsets, this non-uniform offset distribution brings some stack amplitude diversity in the adjacent bins. At present, 3D geometry attribute uniformi- ty of the most analytical methods is expressed by qualitative analysis chart. We introduce in this pa- per a uniformity quantitative analysis method for offset distribution by average value, square devia- tion and weighting factor. The paper analyses effects on offset distribution uniformity of different 3D geometry parameters by the proposed uniformi- ty quantitative analysis method. Furthermore, the paper analyses effects on seismic stack amplitude or frequency uniformity of different 3D geometry parameters by the seismic wave modeling. The re- suits show that offset distribution uniformity is in good agreement with seismic stack amplitude or frequency uniformity. Therefore this improved method can be considered as a useful tool for ana- lyzing and evaluating 3D geometry attribute uni- formity.

  12. ABSTRACTS

    2012-01-01

    Performance and application technique of seismic instrument are related closely to oil and gas exploration effect since seismic instrument is core equipment used in geophysical prospecting. This paper discusses broadly the seismic instrument' s development principle and the relation to geophysical exploration technology from the point of the development needs of geophysical exploration technology. Meanwhile, it gives a systematic introduction to the progress of the seismic instruments over the world using new products or new technology issued in 2011 "EAGE" and "SEG" annual exhibition, hoping to promote a wide understanding of the contemporary seismic instruments and improve the comprehensive application of them.

  13. Abstracts

    The power point presentation is about: danger identification, caracterization, evaluation exposition, risk (CAC, 1997; FAO, 2007), European food safety authority, foodrisk organization, pathogens risk ranking, risk reduction, gubernamental responsability

  14. Abstract

    Tafdrup, Oliver

    2013-01-01

    Udgivet som en del af Tidskrifts specialudgivelse om Adorno. http://tidskrift.dk/data/50/Aforismesamling.pdf......Udgivet som en del af Tidskrifts specialudgivelse om Adorno. http://tidskrift.dk/data/50/Aforismesamling.pdf...

  15. Abstract

    2012-01-01

    Function Ascriptions of Technical Artifacts (p.1) CHEN Fan, XU Jia (Research Center for Philosophy of Science and Technology, Northeastern University, Shenyang, Liaoning, 110004) Abstract: The function of technical artifacts is mind dependent. It is an ontologicaUy subjective entity and an epistemologically objective judgment. Function ascription is a general form of technical function in the epistemological sense. Function ascriptions may be taken in a descriptive and in a performative sense. The former can be called function ascriptions for short and the latter function assignments. The mind dependency of the function of technical artifacts is grounded in performative function ascriptions instead of descriptive function ascriptions. Key Words: Function ascriptions; Descriptive function ascriptions; Performative function ascriptions; Function assignments

  16. ABSTRACTS

    2012-01-01

    A Representative work that Vainly Attempts to Westernize China On Yang Ji.sheng's Paper "My View of Chinese Pattern" XU Chong-wenAbstract: Mr. Yang Ji-sheng calls economic connotation of Chinese pattern "market economy of power" with all sorts of drawbacks, it is to take the problems that Chinese model deliberately struggles with and even the objects must be resolutely eliminated as the parts of Chinese pattern, thus they are absolute nonsense; he boils down political connotation of Chinese pattern to "authority politics" of "thoroughly denying modem democratic system",

  17. ABSTRACTS

    2011-01-01

    Mud logging subject and its speciality construction is an important practical issue in the field of mud logging engineering and accurately positioning mud logging subject and reasonably setting mud logging speciality have an important significance for promoting and guiding the rapid development of mud logging technology.

  18. ABSTRACTS

    2011-01-01

    The establishment of spectroscopy logging theory and application prospects. Zhu Genqing. Mud Logging Engineering, 2011,22(3) :2-6,28 Based on a lot of research and years' practice and set ting out from the purpose of enriching the basic theory of mud logging technology, the author described several spectroscopic methods and theories commonly used in mud logging technology and explored the concept of the spectroscopy logging and the views to establish mud logging theory svstem.

  19. ABSTRACTS

    2012-01-01

    4 Introduction of the Methods Generalized from Mineral Exploration HU Kui (Consulting & Research Center Ministry of Land & Resources, Beijing 100035, China) Abstract: This paper focuses on the introduction of prospecting methods generalized from mineral exploration, these include: prospecting in deep part of the deposit based on shallow deposit, and periphery prospecting within the ore district; finding other type ( kind ) of deposit according to this type; lean ore is the base for rich deposit; small rich ore can depends on large lean ore; the dependence of economical mineral resource is uneconomical mineral resource; prospecting mineral deposit on the basis of different minerals; following outcrop mine to find blind ore; and with marks to explore ore.

  20. ABSTRACT

    2015-01-01

    As the institutional quality audit is being conducted in some pilot provinces,different interpretations of it have occurred,some of which appear to be misleading.This paper is to redefine it in terms of thematic focus,role,value and method to facilitate its implementation.It proposes that the institutional quality audit should keep consistently focused on internal quality assurance,in-volve various stakeholders,enhance its empowerment function and develop itself into a comprehen-sive and systematic approach to continuous quality improvement.

  1. ABSTRACTS

    2001-01-01

    @@CONCURRENT SESSION: FOOD AND WATERBORNE DISEASES      Chair  Prof. Liu Xiu-mei, Institute of Nutrition and Food Hygiene (CAPM), China   Co-chair   Dr. Jorgen Schlundt, World Health Organization, Switzerland   1530-1545 hrs Emerging Foodborne Disearse: An Evolving Public Health Challenge   Robert Baldwin, Center for Disease Control, USA   1545-1600 hrs Food Poisoning Typicality in Food Safety Vulnerable Area of Indonesia   Adil Basuki Abza, Bogor Agricultural University, Indonesia   1600-1615 hrs The Management of Food Poisoning in China   Li Tai-ran, Institute of Food Safety Control and Inspection, Ministry of Health, China   1615-1630 hrs Detection of Campylobacter Species Using a Fluorogenic Real-Time PCR Detection System   Hai-yan Wang, Bureau of Microbial Hazards, Health Canada, Canada   1630-1645 hrs An Overview on Bongkrekic Acid Food Poisoning   Liu Xiu-mei, Institute of Nutrition and Food Hygiene (CAPM), China   1645-1700 hrs Screening Procedure from Cattle Feces and the Prevalence of Escherichia coli O157 in Taiwan Dairy Cattle   Chin-Cheng Chou, Taiwan University, Taibei, China

  2. Abstract

    2011-01-01

    Representation or Construction? An Interpretation of Quantum Field Theory Abstract: In this essay, I argue that the basic entities in the causality organized hierarchy of entities that quantum field theory describes are not particles but fields. Then I

  3. ABSTRACTS

    2012-01-01

    Research on the Theory and Standard of Peasants" Life Cycle Pension Compensation Mu Huaizhong Shen Yi· 2 · Thedifficulties of full coverage in pension system lie in rural farmers. In this paper, we put forward a "dual agricultural welfare difference" theory and apply it to the issues regarding peasants' life cycle pension compensation. Taking differential between equilib- rium and biased agricultural incomes as the key indicator, we build mathematical models of "dual agricultural welfare balance" and measure the size from 1953 to 2009. Our finding shows that China's "dual agricultnral welfare difference" has a fluctuation ranged be- tween 0.4 and 0.6. Based on life cycle characteristics, such as natural life cycle, policy and institutional life cycle, our suggestion is to compensate peasants' primary pension with a balance of "dual agriculture welfare difference" and other countermeasures.

  4. ABSTRACTS

    2012-01-01

    Judicature, Public Opinion, and Politics at An Age of Disordered Legal World View :A Study Centered on the Case of Li Changkui The Case of L/Changkui represents a kind of simple "hard case", in which whatever the judge made a de- cision, result of the case failed to gain good social and legal effects, and the causation, however, rested on the internal system of judicature. The Case of Li reflects an age at which legal world view is deficient in coherence and integration. Although it's not an exclusive problem for China that judicature, public opinion and politics in- teract complicatedly, and the society shows distustt upon the criminal justice system, it reveals that, in the case of Li, some judicial personnel and academics hold an uni-dimensional and prejudiced understanding on the credi- bility, legitimacy and stability of judicature.

  5. ABSTRACTS

    2012-01-01

    Analysis and forecast of the world economy The pace of global economic recovery has slowed down markedly and the risk of a sagging world economy has been increasing in 2011. However, the economic slowdown was taking place at different speeds in different categories of economies. The momentum of economic recovery in the developed economies is clearly insufficient, and its economic growth rate is far lower than the rate of the emerging economies and has declined much more than that of emerging economies. Many big developed economies are facing very severe employment situation now, while the space of the their fiscal and monetary policies have been compressed by the upgrade of the sovereign debt crisis and long-term low interest rates, which are associated with the turmoil in international financial markets, the sluggish growth of international trade and investment, fluctuations in international commodity prices, and aggravated social problems.

  6. ABSTRACTS

    2012-01-01

    Reliability validation studies of locomotive engine turbocharger LI Yu (Dalian Locomotive Research Institute Co., Ltd., Dalian 116021, China) Abstract: Considering the use features of the locomotive diesel engine turbocharger and combining the finite element simulation with experiment, the validation method of tile turbocharger has been studied. In this way, the number of tests can be reduced and the success rate of the test can be increased. And the turbocharger relia- bility assessment can be ahead of the schedule. Key words: turbocharger; reliability; validation test

  7. Abstracts

    The proceedings contain 106 papers of which 2 fall under the INIS Scope. One concerns seismic risk assessment at radioactive waste repositories in the U.S., the other concerns the possibility of predicting earthquakes from changes in radon 222 levels in selected ground water springs of northern Italy. (M.D.)

  8. Abstract

    2012-01-01

    Scientific Culture and Cultural Science (p.1) Today science advances at an astonishingly high speed, and driven by the ideological and industrial revolutions, it even becomes a dominant culture in the society and is respected as the supreme authority. However, the scientific culture, which plays the leading role in the industrial civilization, turns out to be more and more alienated from culture and humanity, resulting in the so-called cultural confusions and loss of humanity. This article, investigating the phenomenon deeply, argues that science has no privileged position over the other cultural traditions, and suggests that science identify itself as a member equal with the other cultural patterns in the society in order to restore its cultural connotations. It is believed that by establishing the cultural science, we can bring culture and humanity back to science.

  9. Abstract

    Alexandre Costa Quintana

    2003-01-01

    Full Text Available The purpose of this article is to show the importance of the Cash Flow Statement and the Value Added Statement as effective instruments of financial management, due to the information that these statements can provide. To demonstrate this, a financial analysis of the principal financial statements of the Empresa Transmissora de Energia Elétrica do Sul do Brasil S.A. – Eletrosul – was made and in particular, a detailed analysis of the Cash Flow Statement and the Value Added Statement. To do this, the financial statements published by the company were obtained. First, liquidity ratios from the Balance Sheet were calculated and, subsequently, an analysis of the Cash Flow Statement and the Value Added Statement was made. This was done to demonstrate that the information obtained from the Balance Sheet could be better detailed by the use of the referenced statements, showing in the end that alterations in the liquidity of the company can be explained by the changes in the ways in which the company used its cash resources.

  10. ABSTRACTS

    2012-01-01

    (1) New Forms of the "Production of Social Relations" under the Scrutiny of Social Engineering Tian Pengying In the Marxist perspective, the production and reproduction of social relations constitute the basic prerequisite and guarantee for human existence and development, and the establishment of an orderly and harmonious modern social relationship that promotes the coordinated development of material production and spiritual production is an important symbol of man's self-conscientiousness to adapt to, rely on and transform the society. The development, transformation and evolution of social relations is both a natural historical process and a creative process in which social subjects participate, design and construct.