Sample records for em desenvolvimento natural

  1. Responsabilidade Social e Estratégia Internacional: pressupostos teóricos e diretrizes para a atuação de multinacionais em países em desenvolvimento

    Microsoft Academic Search

    Eloi Junior Damke; Queila Regina Souza

    Resumo: A questão da Responsabilidade Social corporativa tem sido considerada, entre muitos autores da área da administração , como um tema de relevância crescente na formulação de estratégias empresariais. Considerando o contexto atual em que se fundamentam estas proposições, este trabalho procura relacionar alguns dos principais argumentos favoráveis e desfavoráveis à responsabilida de social das empresas privadas, em especial aquelas

  2. ANÁLISE DAS OPORTUNIDADES PARA O DESENVOLVIMENTO MOTOR (AFFORDANCES) EM AMBIENTES DOMÉSTICOS NO CEARÁ - BRASIL ANALYSIS OF THE OPPORTUNITIES (AFFORDANCES) FOR MOTOR DEVELOPMENT IN THE HOME ENVIRONMENT IN CEARÁ - BRAZIL

    Microsoft Academic Search

    Francisco Salviano Sales Nobre; Cícero Luciano; Alves Costa; Djevan Lopes de Oliveira; Débora Azevedo Cabral; Glauber Carvalho Nobre; Priscila Caçola

    Resumo: Existe um consenso na literatura científica sobre a forte influência dos estímulos ambientais no desenvolvimento motor das crianças. O presente trabalho tem como objetivo analisar as oportunidades para o desenvolvimento motor em ambientes domésticos de diferentes ní- veis socioeconômicos no Estado do Ceará, Brasil. Os dados apresentados no estudo foram colhidos a partir das respostas ao questionário Affordances in

  3. CONCURSO PBLICO PARA PROVIMENTO DE VAGAS EM CARGOS DE TECNOLOGISTA JNIOR PADRO I DA CARREIRA DE DESENVOLVIMENTO TECNOLGICO Edital 02/2014

    E-print Network

    CONCURSO PÚBLICO PARA PROVIMENTO DE VAGAS EM CARGOS DE TECNOLOGISTA JÚNIOR PADRÃO I DA CARREIRA DE União em 07 de março de 2014, do Concurso Público para provimento de vagas em cargos de Tecnologista: local, data, horário, código do cargo, número de inscrição e nome do candidato em ordem alfabética

  4. Georeferencing natural disaster impact footprints : lessons learned from the EM-DAT experience

    NASA Astrophysics Data System (ADS)

    Wallemacq, Pascaline; Guha Sapir, Debarati

    2014-05-01

    The Emergency Events Database (EM-DAT) contains data about the occurrence and consequences of all the disasters that have taken place since 1900. The main objectives of the database are to serve the purposes of humanitarian action at national and international levels; to aid decision making for disaster preparedness, as well as providing an objective base for vulnerability assessments and priority setting. EM-DAT records data on the human and economic impacts for each event as well as the location of said event. This is recorded as text data, namely the province, department, county, district, or village. The first purpose of geocoding (or georeferencing) the EM-DAT database is to transform the location data from text format into code data. The GAUL (Global Administrative Unit Layers) database (FAO) is used as a basis to identify the geographic footprint of the disaster, ideally to the second administrative level and add a unique code for each affected unit. Our first step has involved georeferencing earthquakes since the location of these is precise. The second purpose is to detail the degree of precision of georeferencing. The application and benefits of georeferencing are manifold. The geographic information of the footprint of past (after 2000) and future natural disasters permits the location of vulnerable areas with a GIS system and to cross data from different sources. It will allow the study of different elements such as the extent of a disaster and its human and economic consequences; the exposure and vulnerability of the population in space and time and the efficiency of mitigation measures. In addition, any association between events and external factors can be identified (e.g.: is the famine located at the same places as drought?) and precision of the information in the disaster report can be evaluated. Besides this, these maps will provide valuable communication support since maps have a high communication power and are easily understandable by the wider public and policy makers. Some results from the application of georeferencing will be presented during the session such as a study of the population potentially exposed and affected by natural disasters in Europe, a flood vulnerability analysis in Vietnam and the potential merging of watersheds analysis and flood footprints data.

  5. Modelo 3C de Colaborao para o desenvolvimento de Sistemas Colaborativos

    E-print Network

    Barbosa, Alberto

    58 Modelo 3C de Colaboração para o desenvolvimento de Sistemas Colaborativos Mariano Pimentel1 de sistemas colaborativos. Constata-se que este modelo é útil em diferentes etapas do processo de. O Modelo 3C de Colaboração é frequentemente usado pela literatura para classificar os sistemas

  6. Nature

    NSDL National Science Digital Library

    Nature is a weekly international journal publishing the finest peer-reviewed research in all fields of science and technology on the basis of its originality, importance, interdisciplinary interest, timeliness, accessibility, elegance, and surprising conclusions. Nature also provides rapid, authoritative, insightful and arresting news and interpretation of topical and coming trends affecting science, scientists and the wider public. Nature publishes more articles than any other multidisciplinary journal, and retains its position as the most cited weekly science journal. The site provides free access to news stories in the latest issue; access to research articles, and to the Nature archive, is by subscription.

  7. 0.5setgray00.5setgray1 Determinao de coeficientes em equaes

    E-print Network

    Cipolatti, Rolci

    no primeiro equipamento de tomografia por Raios-X, constru´ido em 1972, por Hounsfield, nos laborat´orios EMI, Inglaterra. Por esses desenvolvimentos, Cormack e Hounsfield receberam o Pr^emio Nobel de medicina em 1979

  8. Determinao de Coeficientes em EDP e Gerao de Imagens para Diagnstico

    E-print Network

    Cipolatti, Rolci

    -X, constru´ido em 1972, por Hounsfield, nos laborat´orios EMI, Inglaterra. Por esses desenvolvimentos, Cormack e Hounsfield receberam o Pr^emio Nobel de medicina em 1979. . ­ p.4/19 #12;Tipos de interação de

  9. Nature

    NASA Astrophysics Data System (ADS)

    Heinhorst, Sabine; Cannon, Gordon

    1997-01-01

    The fact that two of the original articles by this year's Nobel laureates were published in Nature bears witness to the pivotal role of this journal in documenting pioneering discoveries in all areas of science. The prize for Physiology or Medicine was awarded to immunologists Peter C. Doherty (University of Tennessee) and Rolf M. Zinkernagel (University of Zurich, Switzerland), honoring work that, in the 1970s, laid the foundation for our current understanding of the way in which our immune system differentiates between healthy cells and virus-infected ones that are targeted for destruction (p 465 in the October 10 issue of vol. 383). Three researchers share the Chemistry award for their discovery of C60 buckminsterfullerenes. The work by Robert Curl, Richard Smalley (both at Rice University), and Harry Kroto (University of Sussex, UK) has led to a burst of new approaches to materials development and in carbon chemistry (p 561 of the October 17 issue of vol. 383). This year's Nobel prize in physics went to three U.S. researchers, Douglas Osheroff (Stanford University) and David M. Lee and Robert C. Richardson (Cornell University), who were honored for their work on superfluidity, a frictionless liquid state, of supercooled 3He (p 562 of the October 17 issue of vol. 383).

  10. DESENVOLVIMENTO DE UMA PLATAFORMA DE FORÇA EM PEDAL DE CICLISMO

    Microsoft Academic Search

    Carlos Dreyer Neto; Guilherme Schmidt; Cláudia Tarragô Candotti

    2001-01-01

    A strain gauges instrumented clipless force-plataform pedal similar to those used in competition by cyclists and triathletes was designed and constructed. The system is capable of measuring the two forces components along the cycle stride. The geometry of the pedal was comprised of four beams in balance allowed the use of two full Wheatstone Bridges, one for normal forces and

  11. Chords: Em 022000 Em Em Em Em C C C C

    E-print Network

    Reiners, Peter W.

    Verse 1 Chorus Verse 2 Chorus Verse 3 Chords: Em 022000 C 035553 G 320002 F 133211 Intro: Em Em Em Em C C C C Em Em Em Em C C C C Em Em Em Em C C C C Em Em Em Em C C C C Verse: Em Em Em Em C C C C G G G G G G G G Em Em Em Em C C C C G G G G G G G G Em Em Em Em C C C C G G G G G G G G Em Em Em Em C C

  12. Estudo anatômico do crescimento do fruto em Acca sellowiana Berg

    Microsoft Academic Search

    Karin Esemann-Quadros; Ana Paula Mota; Gilberto Barbante Kerbauy; Miguel Pedro Guerra; Jean Pierre Henri Joseph Ducroquet; Rosete Pescador

    2008-01-01

    RESUMO - A Acca sellowiana Berg. (Myrtaceae) é uma frutífera nativa dos planaltos meridionais do Sul do Brasil e que se encontra em processo de domesticação. Seus frutos são doce-acidulados e podem ser consumidos in natura ou empregados para a produção de sucos e doces. Assim, informações sobre o desenvolvimento, morfologia e anatomia de seus frutos são de grande interesse

  13. EDUCAÇÃO AMBIENTAL: SUSTENTÁCULO PARA O DESENVOLVIMENTO DA AGRICULTURA SUSTENTÁVEL

    Microsoft Academic Search

    Roberta do Espírito; Santo Luzzardi

    This article aims to analyze the role of Environmental Education within the process of Sustainable Agriculture development and maintenance. The study makes a review of the 1 Engenheira Agrônoma. Mestranda em Agronomia (área de concentração em Produção Vegetal). Programa de

  14. CRESCIMENTO EM ALTURA DE Araucaria angustifolia (Bert.) O. Ktze. EM TRÊS SÍTIOS NATURAIS, NA REGIÃO DE CANELA - RS HEIGHT GROWTH OF Araucaria angustifolia (Bert.) O. Ktze. ON THREE NATURAL SITES, AT REGION OF CANELA - RS

    Microsoft Academic Search

    Ciência Florestal; Santa Maria; Luciano Weber Scheeren; César Augusto; Guimarães Finger; Mauro Valdir Schumacher; Solon Jonas Longhi

    This work has had as its principal objectives the study of dominant height growth considering its age in three natural sites, and the determination of natural sites classification efficacy for the Araucaria angustifolia (Bert.) O. Ktze. in a planting stand in Canela, RS. For height and age data adjustment, determined through stem analysis, it was used the RICHARDS (1959) non-linear

  15. Nature Nature Publishing Group Nature

    E-print Network

    Cai, Long

    users the chance to continue the debate initiated within the pages of Nature. Make the most from your, editorials and opinion · Online Specials ­ recent topics include the Expoplanets Special, Vaccines

  16. Resonances and Tides in Natural Satellites Systems. (Breton Title: Ressonâncias e Marés em Sistemas de Satélites Naturais.) Resonancias y Mareas en Sistemas de Satélites Naturales

    NASA Astrophysics Data System (ADS)

    Callegari, Nelson, Jr.

    2006-12-01

    In this work we describe some aspects of the dynamics of the mean-motion resonances. Emphasis to the case of resonances between regular satellites of the giant planets will be given, even so some aspects of the physics of the resonances in extra-solar planetary systems are also briefly treated. The role of the resonances in satellites systems is discussed through examples, showing how certain resonances, and its relations with the tidal dissipation effects, can be the key of the explanation of some phenomena still not explained in the Solar System. Amongst some examples we highlight the problem of the resurfacing of Enceladus, the existence of active volcanoes in Io, and the possible existence of the subsurface ocean in Europe. This work has as objective the divulgation of some topics in Celestial Mechanics and Planetary Sciences for an undergraduate public in exact sciences, as Astronomy and Physics, and not their detailed description. Neste trabalho descrevemos alguns aspectos da dinâmica de ressonâncias de movimentos médios. Será dada ênfase maior ao caso de ressonâncias entre satélites regulares dos planetas gigantes, embora alguns aspectos da física das ressonâncias em sistemas planetários extra-solares também sejam discutidos brevemente. A importância do estudo de ressonâncias em sistemas de satélites é discutida mais detalhadamente através de exemplos, mostrando como certas ressonâncias e suas relações com efeitos de dissipação de maré podem ser a chave de parte da explicação de alguns fenômenos ainda não explicados no Sistema Solar. Dentre vários exemplos destacamos o problema da remodelagem da superfície do satélite Enceladus, a existência de vulcões ativos em Io, e a possível existência do oceano subterrâneo em Europa. Este trabalho tem como objetivo a divulgação de alguns tópicos de Mecânica Celeste e Planetologia para um público de nível de graduação em disciplinas na área de exatas, em especial Astronomia e Física, e não a descrição detalhada dos conceitos aqui discutidos. Describimos en este trabajo algunos aspectos de la dinámica de resonancias de movimientos promedio. Será dado un énfasis mayor al caso de las resonancias entre satélites regulares de los planetas gigantes, aunque también son discutidos brevemente algunos aspectos de la física de resonancias en sistemas panetarios extrasolares. La importancia del estudio de las resonancias en sistemas de satélites es discutida más detalladamente através de ejemplos, mostrando cómo ciertas resonancias y los efectos de disipación por mareas pueden ser la clave de parte de la explicación de algunos fenómenos aún no comprendidos en el Sistema Solar. Entre varios ejemplos se destacan el problema de la superficie remodelada del satélite Enceladus, la existencia de volcanes activos en Io y la posible existencia de un océano subterráneo en Europa. Este trabajo tiene como objetivo la divulgación de algunos tópicos en Mecánica Celeste y Planetología para un público universitario de ciencias exactas, en particular Astronomía y Física, y no la descripción detallada de los conceptos aquí discutidos.

  17. Decanato de Planejamento e Oramento Plano de Desenvolvimento Institucional

    E-print Network

    Maier, Rudolf Richard

    ­ Assistente em Administração Mariana Dias Batista-Técnica em Assuntos Educacionais Pedro de Barros L. P Rodrigues da Costa Decana de Extensão (DEX) Prof. César Augusto Tibúrcio Silva Decano de Planejamento e. César Augusto Tibúrcio Silva ­ Decano de Planejamento e Orçamento Revisão Técnica: Jorge Rodrigues Lima

  18. DURABILIDADE NATURAL DA MADEIRA DE TRÊS ESPÉCIES FLORESTAIS EM ENSAIOS DE CAMPO NATURAL DURABILITY OF THREE WOOD SPECIES IN FIELD TESTS Rafael Rodolfo de Melo 1 Diego Martins Stangerlin 2 Elio José Santini 3

    Microsoft Academic Search

    Clovis Roberto Haselein; Darci Alberto Gatto; Felipe Susin

    2010-01-01

    This work aimed to evaluate the natural durability of heartwood and sapwood of Luhea divaricata, Carya illinoinensis and Platanus x acerifolia. Test samples measuring 2.5 x 2.5 x 30.0 cm (radial x tangential x longitudinal) were placed in a pine forest stand and an open field. During a year, the samples were repeatedly weighed and evaluated by a rating system

  19. DESENVOLVIMENTO DE ROBÔ MÓVEL HOLONÔMICO PARA TRANSPORTE E EMPILHAMENTO DE CARGAS EM PLATAFORMA LEGO NXT

    Microsoft Academic Search

    ERICK PFEIFER; ALONSO DE A. SIMÕES; DANILLO S. FARIAS; LEANDRO RIEDNER

    This text describes the implementation of an autonomous robot capable of tracking, manipulating and storing payl- oads of a simulated seaport working environment. In order to achieve this capability, is utilized expansive reconfigurable robot- ics kits with some actuators and sensors from expansion kits. The tracking of objects is made by color sensors, while the robot's positioning is achieved by

  20. Uso da plataforma Moodle para o desenvolvimento de portal de educação a distância em hepatites virais

    Microsoft Academic Search

    Moreira Zornoff; Lucas Frederico Arantes; Renato Antunes Ribeiro; Danielle de Almeida; Pacheco Thomaz; Marcos José Sierra; Antonio Caramori

    Palavras-chave: Hepatites virais, Educação a Distância, Educação continuada, Informática médica, Moodle. Abstract - Health workers need effective methods of continuing education, with objective, flexible and dynamic strategies. This paper describes the creation of an educational platform, focused on viral hepatitis, employing the course management system Moodle. The content includes presentations, tutorials, laws, references, pamphlets, discussion forums and links of interest

  1. Gerência de Configuração em Ambientes de Desenvolvimento de Software Orientados a Organização

    Microsoft Academic Search

    Sávio Figueiredo; Gleison Santos; Ana Regina Rocha

    During the software project life cycle, a great amount of information items is produced and changed. The Software Configuration Management has arisen from the necessity of controlling these changes in order to avoid losing the software project control. This paper describes an approach for the Software Configuration Management Process based on the Software Configuration Management process presented in ISO\\/IEC 12207

  2. M em ory for Item s and M em ory for R elations in the Procedural/D eclarative M em ory Fram ew ork

    E-print Network

    Poldrack, Russ

    M em ory for Item s and M em ory for R elations in the Procedural/D eclarative M em ory Fram ew ork ard Eichenbaum Boston U niversity, U SA A m ajor area of research in m em ory and am nesia concerns the item specificity of im plicit m em ory. In this paper w e address several issues about the nature of im

  3. Natural circulation

    SciTech Connect

    Kim, J.H.; Hassan, Y.A.

    1987-01-01

    The book contains papers on natural circulation. Topics include the following: Natural circulation in PWR type reactors; Natural circulation in vertical rod assemblies; flow conditions and heat transfer in thermosyphons; and Natural convection in porous materials.

  4. Naturally Disastrous

    NSDL National Science Digital Library

    Integrated Teaching and Learning Program,

    Students are introduced to natural disasters and learn the difference between natural hazards and natural disasters. They discover the many types of natural hazards—avalanche, earthquake, flood, forest fire, hurricane, landslide, thunderstorm, tornado, tsunami and volcano—as well as specific examples of natural disasters. Students also explore why understanding these natural hazards is important to engineers and everyone's survival on our planet.

  5. Natural antimutagenic agents.

    PubMed

    Mitscher, L A; Telikepalli, H; McGhee, E; Shankel, D M

    1996-02-19

    Following a brief review of recent discoveries in the field of natural antimutagenic and tumor chemopreventive agents, contemporary findings in the author's laboratories employing the direct acting mutagen, ethyl methanesulfonate, in modified Ames tests and eukaryotic murine FM3A mammary tumor cells modified to be subject to thymidine-less death are described to illustrate the underlying principles. The EMS studies are illustrated with the isolation of the novel antimutagen, plicatin B, from the medicinal plants, Psoralea juncaea and P. plicata. The FM3A studies are carried out with extracts of Styrax asiatica, a plant previously studied extensively with the EMS system. The FM3A findings closely parallel the earlier work with EMS showing that the responsible agents, cinnamic acid, cinnamoyl ricinoleate and cinnamoyl cinnamate are effective both in prokaryotic and eukaryotic tests and that the new FM3A assay system has useful properties for screening and assay of novel antimutagenic agents. PMID:8657175

  6. Nature Watch

    NSDL National Science Digital Library

    Nature Watch is a partnership program of the U.S. Forest Service that provides nature viewing opportunities and encourages safe and sound viewing ethics. The Nature Watch program is for people to experience wildlife, fish, and flowers in their natural settings; to promote recreational viewing opportunities, facilitate learning about the environment, and to promote conservation efforts and wise use of natural resources. This site contains information on Nature Watch programs, coloring books, links to environmental science journals, and information on educational curricula.

  7. O DEBATE BRASILEIRO SOBRE PLURIATIVIDADE: IMPLICAÇÕES SOBRE O DESENVOLVIMENTO RURAL E AS POLÍTICAS PÚBLICAS

    Microsoft Academic Search

    Raquel Pereira Souza; Marcelo Santos Souza

    2008-01-01

    O fenômeno da pluriatividade tem sido um tema bastante debatido e controverso. Nesse debate destacam-se duas perspectivas teóricas que polarizam o debate que são: a do “novo rural” e a da pluriatividade como “estratégia de reprodução social”. Essas perspectivas, apesar de vêem esse fenômeno como eixo dinâmico para o desenvolvimento do meio rural, possuem interpretações diferentes do que vem a

  8. Desenvolvimento neuropsicomotor de lactentes filhos de mães que apresentaram hipertensão arterial na gestação

    Microsoft Academic Search

    Briana R. Dias; Ana Maria S. G. Piovesana; Maria Augusta Montenegro; Marilisa M. Guerreiro

    2005-01-01

    RESUMO - I n t rodução: A hipertensão gestacional é a maior causa de morte materna no país e pode cursar com encefalopatia hipóxico-isquêmica no concepto levando a subseqüentes manifestações neuro l ó g i c a s . Objetivo: C o rrelacionar a hipertensão gestacional com indicadores de risco para o desenvolvimento n e u ropsicomotor do lactente. Método:

  9. ESTADO E AGRICULTORES FAMILIARES: UMA ANÁLISE INTERPRETATIVA SOBRE O DESENVOLVIMENTO RURAL NO SUL DE MINAS GERAIS

    Microsoft Academic Search

    Patricia Aparecida Ferreira; Jose Roberto Pereira; Edgard Alencar; Ana Carolina Santana

    2008-01-01

    Este trabalho procurou identificar como os atores sociais vinculados à agricultura familiar (lideranças de produtores familiares, profissionais de ciências agrárias, autoridades municipais, pesquisadores e professores universitários) interpretam o papel do Estado para o desenvolvimento dessa categoria na Região Sul de Minas Gerais. Com relação à coleta de dados, utilizou-se a técnica \\

  10. Mais de metade do total de investigadores do Pas est no ensino superior. Estes passaram de 50%, em

    E-print Network

    Instituto de Sistemas e Robotica

    %, em 1995, para 62%, em 2010 Maria Joio Alexandre Ao longo dos últimos anos, a des- pesa das empresas privadas em investigação e desenvolvimen- to (I6D) aumentou. E, ao contrário do Estado, os gastos em investigação diminuíram. É, assim, natural que o número de investigadores doutorados em atividades de I6D

  11. Naturally Speaking

    NSDL National Science Digital Library

    2014-09-18

    In this lesson, students will identify the Earth's natural resources and classify them as renewable or non-renewable. They will simulate the distribution of resources and discuss the fairness and effectiveness of the distribution. Students will identify ways that they use — and waste — natural resources, and they will explore ways that engineers interact with natural resources.

  12. Natural gas

    NSDL National Science Digital Library

    N/A N/A (None; )

    2003-07-27

    Natural gas is used as a means of power in households. Natural gas has no natural odor, so an odor is added to the gas. This is useful because gas leaks can be detected better and it also reduces the risk of accidents in homes.

  13. Nature Watch

    NSDL National Science Digital Library

    Nature Watch is a series of volunteer environmental monitoring programs coordinated by the Ecological Monitoring and Assessment Network (EMANCO), the Canadian Nature Federation, and the University of Guelph. Nature Watch is a growing network that currently includes Frog Watch, Ice Watch, Plant Watch, and Worm Watch. Site visitors can access the home pages of each of the participating programs for details about each program, how to collect and contribute data, and to view data that has already been collected.

  14. Natural cooling

    SciTech Connect

    Fenster, L.C.; Grantier, A.J.

    1981-11-25

    With natural cooling, a process or area is cooled by outdoor air when the weather permits, and dependency on mechanical equipment is reduced. It should be used whenever conditions permit, and mechanical equipment should be brought on-line only when natural cooling cannot be employed. The results are minimized costs without lowered comfort or production levels, reduced costs for maintenance associated with higher levels of mechanical chiller system operation, and decreased dependence on expensive, nonrenewable energy sources. This article reviews several methods of natural cooling and provides a detailed computer-based economic evaluation of each. It discusses the air-side economizer, water-side natural cooling, and combination systems.

  15. The nature of electromagnetic energy

    E-print Network

    Jerrold Franklin

    2012-05-29

    The nature of the electromagnetic (EM) energy for general charge and current distributions is analyzed. There are two well known forms for calculating EM energy as the integral over all space of either the electromagnetic fields: $u_{\\bf EB}=({\\bf E\\bcdot D+B\\bcdot H})/8\\pi$, or the electromagnetic potentials and charge-current densities: $u_{\\rho{\\bf A}}=1/2(\\rho\\phi+{\\bf j\\bcdot A})$. We discuss the appropriate use of each of these forms in calculating the total EM energy and the EM energy within a limited volume. We conclude that only the form $u_{\\bf EB}$ can be considered as a suitable EM energy density, while either form can be integrated to find the total EM energy. However, bounding surface integrals (if they don't vanish) must be included when using the $u_{\\bf EB}$ form. Including these surface integrals resolves some seeming paradoxes in the energy of electric or magnetic dipoles in uniform fields

  16. Nature Detectives

    NSDL National Science Digital Library

    Natalie Harr

    2010-11-01

    Richard Louv's Last Child in the Woods (2008) added to a growing consensus to get children outside and experiencing nature. Using ideas from place-based education, the authors present a simple year-long project that brings science, nature, and ot

  17. ABC's Naturally

    NSDL National Science Digital Library

    2012-05-09

    In this activity (located on page 4 of the PDF), learners enjoy the sensory experience of creating letters using natural materials after listening to a book about finding the alphabet in nature. Assemble the alphabet shapes onto pages to form an alphabet book.

  18. Natural cooling

    Microsoft Academic Search

    L. C. Fenster; A. J. Grantier

    1981-01-01

    With natural cooling, a process or area is cooled by outdoor air when the weather permits, and dependency on mechanical equipment is reduced. It should be used whenever conditions permit, and mechanical equipment should be brought on-line only when natural cooling cannot be employed. The results are minimized costs without lowered comfort or production levels, reduced costs for maintenance associated

  19. Natural Semantics

    Microsoft Academic Search

    Gilles Kahn

    1987-01-01

    During the past few years, many researchers have begun to present semantic specifications in a style that has been strongly advocated by Plotkin in (19). The purpose of this paper is to introduce in an intuitive manner the essential ideas of the method that we call now Natural Semantics~ together with its connections to ideas in logic and computing. Natural

  20. Projeto E-FOTO: O Desenvolvimento de um Ambiente Integrado para o Ensino de Fotogrametria Digital em Software Livre

    Microsoft Academic Search

    S. Brito; Luiz C. T. Coelho Filho; Francisco J. C. da Silveira; Guilherme L. A. Mota; Orlando Bernardo Filho; João A. Ribeiro

    2006-01-01

    The academic community has been experiencing the benefits of the development of Free-software in many areas of knowledge. However, Digital Photogrammetry is a field that remains practically unexplored. One exception is the E-FOTO project which aims at developing a Digital Photogrammetric Workstation (DFW) for educational purposes. This project is based upon the self-learning approach and on the principles of the

  1. Pr-Reitoria de Pesquisa e Ps-Graduao -PROPPG Programa de Ps-Graduao em Desenvolvimento Regional -PPGDR

    E-print Network

    Paris-Sud XI, Université de

    - Brasil) Prof. Dr. José Cadima Ribeiro (Universidade do Minho - Portugal) Prof. Dr. Jorge Luiz Alves Natal (UFRJ - RJ - Brasil) Prof. Dr. Jose Antonio Fialho Alonso (FEE - RS - Brasil) Prof. Dr. José Eduardo Faria (USP - SP - Brasil) Prof. Dr. Luiz Felipe Nascimento (UFRGS - RS - Brasil) Prof. Dr. Martin Coy

  2. Desenvolvimento de milho submetido à aplicação de calcário e silicato de cálcio em um Argissolo arenoso do noroeste paranaense

    Microsoft Academic Search

    Antonio Nolla; Itamar Pereira da Palma; Gerson Sander; Leandro Bochi da Silva Volk; Tiago Roque; Benetoli da Silva; Bairro São Cristóvão

    2009-01-01

    Soil acidity is one of major limiting factors in agricultural production. Lime is the most used corrective, but has slow mobility in the soil profile, being slow it's correction below the layer of 0-20 cm. For this, others products have been tested to the acidity correction, such as silicates, which are residues that can be used in the agriculture. The

  3. natural selection

    NSDL National Science Digital Library

    David Joiner

    Charles Darwin's theory of natural selection was the first plausible mechanism to explain the change of species over time, however, in it's original form it did not explain how new traits could form, or how traits that had formed could be passed on to successive generations. The rise in modern genetics helped to modify biologists understanding of evolution by attributing the origin of new traits in a species to random genetic processes of mutation and sexual recombination, with the survivability of species with the new traits subject to natural selection. This combination of random mutation and natural selection is often referred to as Neodarwinism.

  4. Natural Cycle

    NSDL National Science Digital Library

    Climate Central

    In this short video from ClimateCentral, host Jessica Harrop explains what evidence scientists have for claiming that recent global warming is caused by humans and is not just part of a natural cycle.

  5. Nature's Code

    Microsoft Academic Search

    Vanessa J. Hill; Peter Rowlands

    2008-01-01

    We propose that the mathematical structures related to the `universal rewrite system' define a universal process applicable to Nature, which we may describe as `Nature's code'. We draw attention here to such concepts as 4 basic units, 64- and 20-unit structures, symmetry-breaking and 5-fold symmetry, chirality, double 3-dimensionality, the double helix, the Van der Waals force and the harmonic oscillator

  6. Naturalness redux

    E-print Network

    Marco Fabbrichesi; Alfredo Urbano

    2015-04-21

    The idea of naturalness, as originally conceived, refers only to the finite renormalization of the Higgs boson mass induced by the introduction of heavier states. In this respect, naturalness is still a powerful heuristic principle in model building beyond the standard model whenever new massive states are coupled to the Higgs field. The most compelling case is provided by the generation of neutrino masses. In this paper we confront this problem from a new perspective. The right-handed sector responsible for the seesaw mechanism---which introduces a large energy threshold above the electroweak scale---is made supersymmetric to comply with naturalness while the standard model is left unchanged and non-supersymmetric. Cancellations necessary to the naturalness requirement break down only at two loops, thus offering the possibility to increase the right-handed neutrino mass scale up to one order of magnitude above the usual values allowed by naturalness. If also the weak boson sector of the standard model is made supersymmetric, cancellations break down at three loops and the scale of new physics can be further raised. In the type-I seesaw, this implementation provides right-handed neutrino masses that are natural and at the same time large enough to give rise to baryogenesis (via leptogenesis). The model contains a dark matter candidate and distinctive new physics in the leptonic sector.

  7. Naturalness redux

    E-print Network

    Fabbrichesi, Marco

    2015-01-01

    The idea of naturalness, as originally conceived, refers only to the finite renormalization of the Higgs boson mass induced by the introduction of heavier states. In this respect, naturalness is still a powerful heuristic principle in model building beyond the standard model whenever new massive states are coupled to the Higgs field. The most compelling case is provided by the generation of neutrino masses. In this paper we confront this problem from a new perspective. The right-handed sector responsible for the seesaw mechanism---which introduces a large energy threshold above the electroweak scale---is made supersymmetric to comply with naturalness while the standard model is left unchanged and non-supersymmetric. Cancellations necessary to the naturalness requirement break down only at two loops, thus offering the possibility to increase the right-handed neutrino mass scale up to one order of magnitude above the usual values allowed by naturalness. If also the weak boson sector of the standard model is mad...

  8. Desenvolvimento e parasitismo de Lysiphlebus testaceipes (Cresson) e Aphidius colemani Viereck (Hymenoptera: Braconidae) em Aphis gossypii Glover (Hemiptera: Aphididae) em duas cultivares de crisântemo

    Microsoft Academic Search

    Maria C. M. Soglia; Vanda H. P. Bueno; Marcus V. Sampaio; Sandra M. M. Rodrigues; Carlos A. S. Ledo

    2006-01-01

    The parasitoids Lysiphlebus testaceipes (Cresson) and Aphidius colemani Viereck play an important role on the regulation of aphid populations on chrysanthemum grown in greenhouses. This study evaluated the interaction of biological control and plant resistance by the development and the parasitism of L. testaceipes and A. colemani on Aphis gossypii Glover. The aphid host was kept on commercial cultivars of

  9. Avaliação do desenvolvimento neuropsicomotor de crianças em Centros de Educação Infantil em Concórdia Evaluation of neurological and psychomotor development in children from baby centers of Concórdia

    Microsoft Academic Search

    Rubia do Nascimento; Valéria S Faganello Madureira; Jones Eduardo Agne

    SUMMARY Objective. To evaluate the neurological and psychomotor development (NPMD) in children Centros Municipais de Education Infantil - CMEIs (baby centers) of Concórdia, Santa Catarina, Brazil. Method. Out of 132 children, 61 children were included, aged 4 to 12 months old, morn- ing and afternoon schedules, and absence of neurological diseases. The Brunet-Lézine Scale (BLS) evaluated the NPMD. The parents

  10. em campanha pela qualidade

    E-print Network

    Instituto de Sistemas e Robotica

    Estudantes em campanha pela qualidade #12;Alunos unidos pela educação Ensino. No dia em que se ensino superior. Promulgado pela Assembleia da República em 1987, o Dia Nacional do Estudante comemora, aquando da crise académica vivida em Portugal. Agora, as associações académicas aproveitam o dia para

  11. Novo mestrado em Engenharia

    E-print Network

    Instituto de Sistemas e Robotica

    LISBOA Novo mestrado em Engenharia Petrolífera > A secretária de Estado da Ciência, Leonor Parreira, inaugu- ra hoje, em Lisboa, um novo mes- trado em Engenharia do Petróleo patrocinado pela Galp e Coimbra, a Universidade de Aveiro e a Universidade do Minho. O mestrado, em que serão abor- dadas áreas

  12. Stochastic Variants of EM: Monte Carlo, Quasi-Monte Carlo and More Wolfgang Jank

    E-print Network

    Jank, Wolfgang

    Stochastic Variants of EM: Monte Carlo, Quasi-Monte Carlo and More Wolfgang Jank Robert H. Smith School of Business University of Maryland KEY WORDS: Monte Carlo EM; Stochas- tic Approximation denotes an unknown parameter vector. The EM (Expectation-Maximization) algorithm naturally appeals

  13. Natural contraception.

    PubMed

    Breuner, Cora Collette

    2005-10-01

    This article discusses some complementary and alternative medicine options for contraception, including natural family planning and plant-derived hormonal contraception. Primary care providers are crucial resources for advice and recommendations about these options. The discussion will include medical evidence to support or refute these methods, potential dangers of these interventions, and additional resources for those who want to learn more. PMID:16183542

  14. Natural games

    E-print Network

    Jani Anttila; Arto Annila

    2011-03-05

    Behavior in the context of game theory is described as a natural process that follows the 2nd law of thermodynamics. The rate of entropy increase as the payoff function is derived from statistical physics of open systems. The thermodynamic formalism relates everything in terms of energy and describes various ways to consume free energy. This allows us to associate game theoretical models of behavior to physical reality. Ultimately behavior is viewed as a physical process where flows of energy naturally select ways to consume free energy as soon as possible. This natural process is, according to the profound thermodynamic principle, equivalent to entropy increase in the least time. However, the physical portrayal of behavior does not imply determinism. On the contrary, evolutionary equation for open systems reveals that when there are three or more degrees of freedom for behavior, the course of a game is inherently unpredictable in detail because each move affects motives of moves in the future. Eventually, when no moves are found to consume more free energy, the extensive-form game has arrived at a solution concept that satisfies the minimax theorem. The equilibrium is Lyapunov-stable against variation in behavior within strategies but will be perturbed by a new strategy that will draw even more surrounding resources to the game. Entropy as the payoff function also clarifies motives of collaboration and subjective nature of decision making.

  15. Controlled source electromagnetic deep sounding: Theory, results and correlation with natural source results

    Microsoft Academic Search

    David E. Boerner

    1992-01-01

    Controlled source electromagnetic (EM) methods represent a unique set of geophysical experiments which can be used to determine the properties and state of the deep continental crust. Unlike natural source EM methods, an artificial EM source technique can be designed to optimize resolution and minimize interactions with local structure. The major drawbacks include restricted depth penetration, insufficient data sets and

  16. Nature Milestones

    NSDL National Science Digital Library

    What were the most important advances in cutaneous biology of the past 100 years? The Nature Milestones website provides a detailed answer to that question, along with similar responses regarding light microscopy, cancer, and gene expression. All told there are ten special features on the site, and each feature includes an interactive timeline, scientific commentaries, and a selection of articles from Nature magazine and other peer-reviewed publications. Additionally, each feature includes a list of academic advisors, sponsors, and links to external resources on the subject. Visitors may wish to use these resources in the classroom setting, as they provide basic and advanced materials that can be used by a number of introductory courses. Finally, a number of the materials are also available in the pdf format for easy printing.

  17. VIABILIZANDO O DESENVOLVIMENTO SUSTENTÁVEL ATRAVÉS DO GIRASSOL: DISCUSSÕES ANALÍTICAS E EVIDÊNCIAS EMPÍRICAS PARA O SUL DO BRASIL

    Microsoft Academic Search

    Leonardo Xavier da Silva; Eduardo Andre Tillmann

    2008-01-01

    Este estudo busca descrever as possibilidades de desenvolvimento, conceituado pelas idéias de Ignacy Sachs (2002), através de benefícios ao produtor rural, mais especificamente, ao engajado na agricultura familiar, fazendo-se referência àqueles situados nos municípios correspondentes ao COREDESul (Rio Grande do Sul), ao adotar a cultura do Girassol. Para isso, foi feita uma revisão bibliográfica, apontando razões pelas quais seria interessante

  18. O que bilíngues bimodais têm a nos dizer sobre desenvolvimento bilíngue?

    PubMed Central

    de Quadros, Ronice Müller; Lillo-Martin, Diane; Pichler, Deborah Chen

    2013-01-01

    O objetivo deste trabalho é apresentar o que as pesquisas que estamos desenvolvendo com crianças ouvintes, filhas de pais surdos, adquirindo Língua Brasileira de Sinais (Libras) e Português e Língua de Sinais Americana (ASL) e Inglês (Lillo-Martin et al. 2010) têm a nos dizer sobre desenvolvimento bilíngue. Os dados deste estudo fazem parte de um banco de dados de interações espontâneas coletadas longitudinalmente, alternando contextos de aquisição da Libras e do português como língua alvo, no Brasil e dados coletados longitudinalmente. nos mesmos contextos, de crianças adquirindo ASL e inglês1. Além disso, há também dados do estudo experimental com testes aplicados nos dois pares de línguas que se agregam ao presente estudo. Uma visão geral dos estudos desenvolvidos sobre a aquisição bilíngue bimodal por crianças ouvintes, filhas de pais surdos, será apresentada e, então, serão expostos alguns aspectos linguísticos deste tipo de aquisição, considerando as discussões sobre aquisição bilíngue a partir da pesquisa realizada. PMID:24431480

  19. Natural Disasters

    NSDL National Science Digital Library

    2014-09-18

    Students are introduced to our planet's structure and its dynamic system of natural forces through an examination of the natural hazards of earthquakes, volcanoes, landslides, tsunamis, floods and tornados, as well as avalanches, fires, hurricanes and thunderstorms. They see how these natural events become disasters when they impact people, and how engineers help to make people safe from them. Students begin by learning about the structure of the Earth; they create clay models showing the Earth's layers, see a continental drift demo, calculate drift over time, and make fault models. They learn how earthquakes happen; they investigate the integrity of structural designs using model seismographs. Using toothpicks and mini-marshmallows, they create and test structures in a simulated earthquake on a tray of Jell-O. Students learn about the causes, composition and types of volcanoes, and watch and measure a class mock eruption demo, observing the phases that change a mountain's shape. Students learn that the different types of landslides are all are the result of gravity, friction and the materials involved. Using a small-scale model of a debris chute, they explore how landslides start in response to variables in material, slope and water content. Students learn about tsunamis, discovering what causes them and makes them so dangerous. Using a table-top-sized tsunami generator, they test how model structures of different material types fare in devastating waves. Students learn about the causes of floods, their benefits and potential for disaster. Using riverbed models made of clay in baking pans, students simulate the impact of different river volumes, floodplain terrain and levee designs in experimental trials. They learn about the basic characteristics, damage and occurrence of tornadoes, examining them closely by creating water vortices in soda bottles. They complete mock engineering analyses of tornado damage, analyze and graph US tornado damage data, and draw and present structure designs intended to withstand high winds.

  20. Nature: Debates

    NSDL National Science Digital Library

    _Nature_, the prestigious international journal of science, has launched this 'Debates' site "to map out and define the landscape of international scientific controversy." More specifically, this site provides a forum for thinking about, and "discussing" (ex situ), several current scientific topics. The set-up of the site includes a list of monthly topics, moderated by selected experts (a short 'credentials' summary is provided for each), and contributions from select readers. The Current topic is entitled "Is the fossil record adequate?" The previous (first) topic was entitled "Benefits and Risks of Genetic Modification in Agriculture."

  1. Leica EM UC7 Leica EM FC7

    E-print Network

    Chapman, Michael S.

    Leica EM UC7 Leica EM FC7 High Quality Ultramicrotome for Precise Room Temperature and Cryo its latest specimen preparation technology: the Leica EM UC7 ultramicrotome and the Leica EM FC7 cryo chamber attachment. #12;3 Leica EM UC7 The Leica EM UC7 prepares excellent quality semi- and ultra

  2. Brookhaven EM Completion Project Environmental

    E-print Network

    Homes, Christopher C.

    Brookhaven EM Completion Project Office of Environmental Management 1 American Recovery Site Office Brookhaven National Laboratory Community Advisory Council April 15, 2009 #12;Brookhaven EM Environmental Management (EM) Funding and Goals Brookhaven EM ARRA Projects Description of ARRA Projects #12

  3. Complaints against an EMS system.

    PubMed

    Colwell, Christopher B; Pons, Peter T; Pi, Randy

    2003-11-01

    Complaints against Emergency Medical Services (EMS) agencies represent a concerning and potentially time-consuming problem for all involved in the delivery of prehospital emergency medical care. The objective of this study was to identify the source of complaints against an EMS system to help focus quality and performance improvement and customer service efforts. We conducted a retrospective review of complaints filed against a busy urban EMS agency over a 6-year period. All complaints were included, totaled by season and by year, and categorized by originator and nature of the complaint. A total of 286 complaints were registered during the 6-year period, with an average of 48 per year and 9.3 per 10,000 responses. The most common originators of complaints were patients (53%) followed by medical personnel (19%) and family members or friends (12%). Rude behavior accounted for 23% of the complaints registered, followed by technical skills (20%), transport problems (18%), and loss of belongings (13%). The identification of areas of dissatisfaction will allow focused quality and performance improvement programs directed at customer service and risk management. PMID:14654181

  4. EM International. Volume 1

    SciTech Connect

    Not Available

    1993-07-01

    It is the intent of EM International to describe the Office of Environmental Restoration and Waste Management`s (EM`s) various roles and responsibilities within the international community. Cooperative agreements and programs, descriptions of projects and technologies, and synopses of visits to international sites are all highlighted in this semiannual journal. Focus on EM programs in this issue is on international collaboration in vitrification projects. Technology highlights covers: in situ sealing for contaminated sites; and remote sensors for toxic pollutants. Section on profiles of countries includes: Arctic contamination by the former Soviet Union, and EM activities with Germany--cooperative arrangements.

  5. NATURE: Kalahari

    NSDL National Science Digital Library

    2003-01-01

    This website is the Web companion to the two-part NATURE documentary on the Kalahari Desert, which aired on PBS during fall 2003. The first episode, Kalahari: The Great Thirstland, explores the intense extremes of the Kalahari landscape, where wildlife "struggle for survival on the African plains." The site offers a number of Web-only extras, including a species guide in the form of animal trading cards, a slide show showing seasonal change in the Kalahari, and more. Episode Two, Kalahari: The Flooded Desert, explores the desert wetland of the Okavango Delta, "one of the most unusual ecosystems in one of the harshest regions in the world." The Web companion for this episode can by accessed through the first website, and it's here that teachers will find an interdisciplinary lesson plan designed for grades 3-5. The lesson focuses on the rich diversity of Kalahari wildlife, and uses a number of interactive activities from other websites (links provided). Web-only features for this episode include an interactive journey through the Okavango Delta, a behind-the-scenes interview with the film's director, and of course, related links. [RS

  6. Relatrio Final de TFC Desenvolvimento Automtico de Sistemas 02-04-2013 N. da Proposta: 12

    E-print Network

    da Silva, Alberto Rodrigues

    que seria desejável. Neste TFC, foi proposta uma solução: uma conversão da plataforma Eclipse (disponível em Java) para .NET. Esta plataforma oferece um mecanismo de extensibilidade poderoso, mas incentiva ao mesmo tempo a modularidade e ao encapsulamento. A plataforma foi convertida, adaptada para

  7. Código para imageamento indireto de estrelas em sistemas binarios: simulação de variações elipsoidais e do perfil das linhas

    NASA Astrophysics Data System (ADS)

    Souza, T. R.; Baptista, R.

    2003-08-01

    As estrelas secundárias em variáveis cataclí smicas (VCs) e binárias-x de baixa massa (BXBMs) são cruciais para o entendimento da origem, evolução e comportamento destas binárias interagentes. Elas são estrelas magneticamente ativas submetidas a condições ambientais extremas [e.g., estão muito próximas de uma fonte quente e irradiante; têm rotação extremamente rápida e forma distorcida; estão perdendo massa a taxas de 10-8-10-10 M¤/ano] que contribuem para que suas propriedades sejam distintas das de estrelas de mesma massa na seqüência principal. Por outro lado, o padrão de irradiação na face da secundária fornece informação sobre a geometria das estruturas de acréscimo em torno da estrela primária. Assim, a obtenção de imagens da superfície destas estrelas é de grande interesse astrofísico. A Tomografia Roche usa as variações no perfil das linhas de emissão/absorção da estrela secundária em função da fase orbital para mapear a distribuição de brilho em sua superfície. Neste trabalho apresentamos os resultados iniciais do desenvolvimento de um programa para o mapeamento da distribuição de brilho na superfí cie das estrelas secundárias em VCs e BXBMs com técnicas de astro-tomografia. Presentemente temos em operação um código que simula as variações no perfil das linhas em conseqüência de efeito Doppler resultante da combinação de rotação e translação de uma estrela em forma de lobo de Roche em torno do centro de massa da binária, em função da distribuição de brilho na superfície desta estrela. O código igualmente produz a curva de luz resultante das variações de aspecto da estrela em função da fase orbital (variações elipsoidais).

  8. Escenario EM Modelo Matematico

    E-print Network

    Majós, Antonio Badía

    j - 2012 CAB Escenario EM Modelo Matem´atico Problemas F´isicos Title Page 1 of 22 Back Full Screen.C.M.A.­C.S.I.C., Universidad de Zaragoza, ESPA~NA #12;j - 2012 CAB Escenario EM Modelo Matem´atico Problemas F´isicos Title negativa ? Difusi´on magn´etica hacia el EC #12;j - 2012 CAB Escenario EM Modelo Matem´atico Problemas F

  9. Deterministic annealing EM algorithm

    Microsoft Academic Search

    Naonori Ueda; Ryohei Nakano

    1998-01-01

    Abstract This paper presents a deterministic annealing EM (DAEM) algorithm for maximum,likelihood estimation problems,to overcome,a local maxima problem associated with the conventional EM algorithm. In our approach, a new posterior parameterized by ‘temperature’ is derived by using the principle of maximum entropy and is used for controlling the annealing process. In the DAEM algorithm, the EM process is reformulated as

  10. MESTRADO EM TEOLOGIA Edital 2015

    E-print Network

    MESTRADO EM TEOLOGIA Edital 2015 Este edital se destina especificamente a candidatos ao Mestrado em Teologia, com início em março de 2015. 1. Objetivo O Programa de Mestrado em Teologia visa o eclesiásticos. 2. Duração: 24 meses, iniciando-se em março de 2015 e concluindo-se em fevereiro de 2017. 3

  11. Equipment management system (EMS)

    Microsoft Academic Search

    T. Yurtsever; M. Comerford

    1995-01-01

    Equipment Management System (EMS) is a software tool used to monitor and track equipment states, restrictions and PM schedules in real time. EMS has been designed and customized to support the MOS-2 die production facility. The system provides graphical representation of the entire factory. Color coded icons represent equipment's current state (i.e. qualification, production, unscheduled maintenance, etc.). Preventative maintenance schedules

  12. Natural Language Processing.

    ERIC Educational Resources Information Center

    Chowdhury, Gobinda G.

    2003-01-01

    Discusses issues related to natural language processing, including theoretical developments; natural language understanding; tools and techniques; natural language text processing systems; abstracting; information extraction; information retrieval; interfaces; software; Internet, Web, and digital library applications; machine translation for…

  13. aula pratica: (Laboratorio) Deduc~ao natural em Isabelle

    E-print Network

    Lisboa, Universidade Técnica de

    > result(); val it = "[| ?A ==> ?B; ?A |] ==> ?B" : Thm.thm Use esta ideia agora para derivar: 1. Np R agora o back: > ba 1; Level 2 (1 subgoal) ([| (A-->C); (B-->C); B |] ==> C) 1. ([| (A-->C); (B-->C); B! val it = () : unit Use agora as ideias anteriores para derivar: 1. y(xQ(x, y)) Nc x(yQ(x, y)) 2. x

  14. AN EM APPROACH TO MINERAL ANALYSIS USING NATURAL GAMMA RAYS

    E-print Network

    Huynh, Du

    ). The lead serves to shield the detector from terrestrial and cosmic gamma radiation, which would Figure 1 spectra collected with a BGO (Bismuth Germanate) gamma ray detector. This detector collects gamma ray on these data, and using a Poisson model for the data generation, a statistical model is proposed

  15. Regulation of natural monopolies

    E-print Network

    Joskow, Paul L.

    2005-01-01

    This chapter provides a comprehensive overview of the theoretical and empirical literature on the regulation of natural monopolies. It covers alternative definitions of natural monopoly, regulatory goals, alternative ...

  16. Environmental Media Services (EMS)

    NSDL National Science Digital Library

    Environmental Media Services (EMS) is a nonprofit communications clearinghouse committed to the expansion of media coverage on critical environmental and public health issues. True to their mission, EMS staff "build relationships with top scientists, physicians, and other experts to bring journalists the latest and most credible information." EMS's modest homepage is free of clutter but full of content. While several sections are under construction and updates (currently) appear irregular, a series of available articles provides useful summaries of important environmental news issues over the past six months. Current articles include "The impacts of global warming on the oceans" and "Cool companies," among others.

  17. Research Highlights Nature Nanotechnology

    E-print Network

    Müller, Markus

    © 2009 APS Research Highlights Nature Nanotechnology Published online: 17 July 2009 | doi:10 perfect fluid. Phys. Rev. Lett. 103, 025301 (2009). | Article |1. Nature Nanotechnology ISSN 1748 : Nature Nanotechnology http://www.nature.com/nnano/reshigh/2009/0709/full/nnano.2009.222.html 1 of 1 18

  18. Psiquiatria baseada em evidências

    Microsoft Academic Search

    Maurício S de Lima; Bernardo GO Soares; Josué Bacaltchuk

    2000-01-01

    Abstract Keywords Em psiquiatria, observa-se grande variabilidade de práticas clínicas, muitas vezes desnecessária. Essas varia- ções podem,estar relacionadas à ausência de evidência científica confiável ou ao desconhecimento,das evidên- cias de boa qualidade disponíveis. A medicina baseada em evidências (MBE) é uma combinação de estratégias que busca assegurar que o cuidado individual do paciente seja baseado na melhor informação disponível, a

  19. Natural gas monthly

    SciTech Connect

    NONE

    1998-01-01

    The Natural Gas Monthly highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the Natural Gas Monthly features articles designed to assist readers in using and interpreting natural gas information.

  20. Sketching in Nature

    NSDL National Science Digital Library

    April Hobart

    2005-01-01

    Science students will discover the beauty of communing with nature by utilizing a Nature journal during field observations. Nature journaling is a useful skill, independent of whether students consider themselves artists. Sketching from nature is one way to provide open-ended, inquiry-based learning while also bringing art into the process of learning science. This article includes two exercises, contour drawing and an observation activity, to get teachers started in the process of "sketching nature" into the science curriculum.

  1. PROFESSOR DO SEPT MINISTRA CONFERNCIA EM ABERTURA EM CONGRESSO E SIMPSIO EM CARUARU

    E-print Network

    Paraná, Universidade Federal do

    PROFESSOR DO SEPT MINISTRA CONFER�NCIA EM ABERTURA EM CONGRESSO E SIMP�SIO EM CARUARU Christian Mendez Alcantara, Professor dos Cursos de Gestão Pública e Agente Comunitário em Saúde do Setor de ministrará conferência de abertura no evento: "Gestão e Governança em Saúde Pública: Avanços e Desafios" da

  2. The Nature of Natural Hazards Communication (Invited)

    NASA Astrophysics Data System (ADS)

    Kontar, Y. Y.

    2013-12-01

    Some of the many issues of interest to natural hazards professionals include the analysis of proactive approaches to the governance of risk from natural hazards and approaches to broaden the scope of public policies related to the management of risks from natural hazards, as well as including emergency and environmental management, community development and spatial planning related to natural hazards. During the talk we will present results of scientific review, analysis and synthesis, which emphasize same new trends in communication of the natural hazards theories and practices within an up-to-the-minute context of new environmental and climate change issues, new technologies, and a new focus on resiliency. The presentation is divided into five sections that focus on natural hazards communication in terms of education, risk management, public discourse, engaging the public, theoretical perspectives, and new media. It includes results of case studies and best practices. It delves into natural hazards communication theories, including diffusion, argumentation, and constructivism, to name a few. The presentation will provide information about: (1) A manual of natural hazards communication for scientists, policymakers, and media; (2) An up-to-the-minute context of environmental hazards, new technologies & political landscape; (3) A work by natural hazards scientists for geoscientists working with social scientists and communication principles; (4) A work underpinned by key natural hazards communication theories and interspersed with pragmatic solutions; (5) A work that crosses traditional natural hazards boundaries: international, interdisciplinary, theoretical/applied. We will further explore how spatial planning can contribute to risk governance by influencing the occupation of natural hazard-prone areas, and review the central role of emergency management in risk policy. The goal of this presentation is to contribute to the augmentation of the conceptual framework of risk governance and increase the awareness of practitioners and decision-makers to the need to adopt proactive policies, leading to a more integrated, participative, and adaptive governance that can respond more efficiently to the increasing uncertainty resulting from escalating natural hazards risk exposure.

  3. Seed Dormancy of Rice: From Natural Variation to Underlying Genes

    Technology Transfer Automated Retrieval System (TEKTRAN)

    This report updates our research progress on the natural variation of seed dormancy in rice (Oryza sativa). Ten quantitative trait loci (QTLs) have been associated with variation in seed dormancy between the weedy rice line SS18-2 and the cultivated rice line EM93-1. SS18-2 contributes alleles delay...

  4. Multi-Level Annotation of Natural Scenes Using Dominant Image

    E-print Network

    Fan, Jianping

    Multi-Level Annotation of Natural Scenes Using Dominant Image Compounds and Semantic Concepts at Charlotte #12;Outline of Presentation Research Motivation Semantic Image Representation Semantic Image Concept Modeling Adaptive EM Algorithm for Classifier Training Multi-Level Image Annotation Conclusions

  5. CONCURSO PBLICO PARA PROVIMENTO DE VAGAS EM CARGOS DE TECNOLOGISTA JNIOR PADRO I DA CARREIRA DE DESENVOLVIMENTO TECNOLGICO Edital 02/2014

    E-print Network

    MARCOS DA SILVA SCARAMAL 3284 TJ01 JOSÉ ALBERTO DA SILVA FERREIRA 2551 TJ01 JOSÉ ANTONIO FERREIRA 3556 TJ GONÇALO DOS SANTOS 2675 TJ02 ANDRÉ MENDONÇA DE DECCO 2071 TJ02 ANTONIO MARCOS VIANNA CAMPOS 3045 TJ02 SOUZA 3427 TJ01 DEMERVAL SOARES MOREIRA 2518 TJ01 DENNIS ANTONIO SILVEIRA LIMA 3575 TJ01 DIEGO JOSÉ

  6. CONCURSO PBLICO PARA PROVIMENTO DE VAGAS EM CARGOS DE TECNOLOGISTA JNIOR PADRO I DA CARREIRA DE DESENVOLVIMENTO TECNOLGICO Edital 02/2014

    E-print Network

    GONÇALO DOS SANTOS 2675 50 TJ02 ANDRÉ MENDONÇA DE DECCO 2071 50 TJ02 ANTONIO MARCOS VIANNA CAMPOS 3045 52 SOUZA 3427 NC TJ01 DEMERVAL SOARES MOREIRA 2518 58 TJ01 DENNIS ANTONIO SILVEIRA LIMA 3575 48 TJ01 DIEGO INÁCIO CORDEIRO DE PÁDUA 2663 38 TJ01 JOÃO MARCOS DA SILVA SCARAMAL 3284 52 #12;TJ01 JOSÉ ALBERTO DA

  7. CONCURSO PBLICO PARA PROVIMENTO DE VAGAS EM CARGOS DE TECNOLOGISTA JNIOR PADRO I DA CARREIRA DE DESENVOLVIMENTO TECNOLGICO Edital 02/2014

    E-print Network

    SILVA 3512 TJ01 DAVI ROBERTO DE SOUZA 3427 TJ01 DEMERVAL SOARES MOREIRA 2518 TJ01 DENNIS ANTONIO INÁCIO CORDEIRO DE PÁDUA 2663 TJ01 JOÃO MARCOS DA SILVA SCARAMAL 3284 TJ01 JOSÉ ALBERTO DA SILVA FERREIRA 2551 TJ01 JOSÉ ANTONIO FERREIRA 3556 TJ01 JOSÉ LÁZARO DE SIQUEIRA JÚNIOR 2425 TJ01 JULIANA APARECIDA

  8. Natural gas annual 1996

    SciTech Connect

    NONE

    1997-09-01

    This document provides information on the supply and disposition of natural gas to a wide audience. The 1996 data are presented in a sequence that follows natural gas from it`s production to it`s end use.

  9. Perceptions of the natural

    E-print Network

    Filipovic, Renata, 1973-

    2005-01-01

    This thesis takes on the difficulty of defining a clear line that connects and separates natural and artificial in a contemporary landscape. It is a proposal for a park that addresses the image and understanding of nature. ...

  10. Nature/Culture/Seawater

    E-print Network

    Helmreich, Stefan

    This essay considers seawater as a substance and symbol in anthropological and social theory. Seawater has occupied an ambiguous place with respect to anthropological categories of nature and culture. Seawater as nature ...

  11. Is "Natural" Always Healthy?

    ERIC Educational Resources Information Center

    Kaufman, M. Robert; Siek, Theodore

    1980-01-01

    Currently, the word "natural" is being used to imply health, safety, and wellness. However, many "natural" substances produce psychoactive or physiologic effects which are potentially toxic to the user. (CJ)

  12. Biomimicry: Natural Designs

    NSDL National Science Digital Library

    2014-09-18

    Students learn about biomimicry and how engineers often imitate nature in the design of innovative new products. They demonstrate their knowledge of biomimicry by practicing brainstorming and designing a new product based on what they know about animals and nature.

  13. Colours From Nature

    ERIC Educational Resources Information Center

    Simon, Wilma

    1974-01-01

    In reference to American Indian ceremonial art, the importance of using natural pigments is emphasized, since the superior color values of natural dyes better reflect religious and philosophical depth and meaning. (JC)

  14. Natural Gas Flare

    USGS Multimedia Gallery

    A natural gas flare. Sometimes, often due to lack of transportation or storage capacity, natural gas that is co-produced with oil will be burned in a flare. This wellpad is in the Tuscaloosa Marine Shale....

  15. Natural gas annual 1995

    SciTech Connect

    NONE

    1996-11-01

    The Natural Gas Annual provides information on the supply and disposition of natural gas to a wide audience including industry, consumers, Federal and State agencies, and educational institutions. The 1995 data are presented in a sequence that follows natural gas (including supplemental supplies) from its production to its end use. This is followed by tables summarizing natural gas supply and disposition from 1991 to 1995 for each Census Division and each State. Annual historical data are shown at the national level.

  16. Natural gas annual 1994

    SciTech Connect

    NONE

    1995-11-17

    The Natural Gas Annual provides information on the supply and disposition of natural gas to a wide audience including industry, consumers, Federal and State agencies, and educational institutions. The 1994 data are presented in a sequence that follows natural gas (including supplemental supplies) from its production to its end use. This is followed by tables summarizing natural gas supply and disposition from 1990 to 1994 for each Census Division and each State. Annual historical data are shown at the national level.

  17. Lesson 1. Natural Hazards & Natural Disasters

    E-print Network

    Chen, Po

    events. #12;Geological Hazards · The magnitude of an event is a measurement are inevitable but natural disasters are not. #12;Geological Hazards · Defini9on: A geological hazard is an interac4on between human society and extreme or rare

  18. Bryce Canyon Natural Bridge

    USGS Multimedia Gallery

    The Bryce Canyon Natural Bridge. Technically, this is not a natural bridge, which forms when running water erodes a tunnel into a rock formation. Instead, this is a natural arch, similar to the ones in nearby Arches National Park. Bryce Canyon is a unique sandstone formation in southern Utah. It is...

  19. Learning in Nature

    ERIC Educational Resources Information Center

    Brody, Michael

    2005-01-01

    This paper traces the evolution of a theory of learning in nature in order to explain how people learn in natural settings. The intellectual roots of the theory in informal learning, cognition, affective development, experiential and meaningful learning are described and the synthesis into a comprehensive theory of learning in nature are…

  20. How Nature Helps Children.

    ERIC Educational Resources Information Center

    Crane, William

    2001-01-01

    Discusses three major ways in which nature helps children develop. Discusses observations of theorists and researchers, including Maria Montessori, that nature stimulates children's powers of observation, fosters creativity, and instills a sense of peace and being at one with the world. Offers recommendations, including protecting nature

  1. Human nature and enhancement.

    PubMed

    Buchanan, Allen

    2009-03-01

    Appeals to the idea of human nature are frequent in the voluminous literature on the ethics of enhancing human beings through biotechnology. Two chief concerns about the impact of enhancements on human nature have been voiced. The first is that enhancement may alter or destroy human nature. The second is that if enhancement alters or destroys human nature, this will undercut our ability to ascertain the good because, for us, the good is determined by our nature. The first concern assumes that altering or destroying human nature is in itself a bad thing. The second concern assumes that human nature provides a standard without which we cannot make coherent, defensible judgments about what is good. I will argue (1) that there is nothing wrong, per se, with altering or destroying human nature, because, on a plausible understanding of what human nature is, it contains bad as well as good characteristics and there is no reason to believe that eliminating some of the bad would so imperil the good as to make the elimination of the bad impermissible, and (2) that altering or destroying human nature need not result in the loss of our ability to make judgments about the good, because we possess a conception of the good by which we can and do evaluate human nature. I will argue that appeals to human nature tend to obscure rather than illuminate the debate over the ethics of enhancement and can be eliminated in favor of more cogent considerations. PMID:19161567

  2. Drawing From Nature

    NSDL National Science Digital Library

    2012-06-26

    In this activity, learners draw natural objects to explore the details, differences, and similarities of natural objects. Learners investigate plants, seeds, pinecones, and other items from nature at two stations. At station one, learners trace plants on plexiglass. At station two, learners observe small items through magnifying glasses and draw what they see.

  3. Natural Gas Annual 1996

    NSDL National Science Digital Library

    _Natural Gas Annual_ provides information on the "supply and disposition of natural gas in the United States." It contains State level data for production, transmission, storage, deliveries, and price of natural gas. Historical data at the national level are available from the 1930's.

  4. Evolution by Natural Selection

    NSDL National Science Digital Library

    Jennifer Doherty

    Principles of natural selection are demonstrated by a simulation that involves different color pom-poms and student feeders equipped with different types of feeding implements. Students analyze results to see how different traits contribute to fitness in different habitats. Additional examples and questions help students to understand the process of natural selection, including three necessary conditions for natural selection to take place.

  5. Processing Natural Language without Natural Language Processing

    Microsoft Academic Search

    Eric Brill

    2003-01-01

    We can still create computer programs displaying only the most rudimentary natural language processing capabilities. One of\\u000a the greatest barriers to advanced natural language processing is our inability to overcome the linguistic knowledge acquisition\\u000a bottleneck. In this paper, we describe recent work in a number of areas, including grammar checker development, automatic\\u000a question answering, and language modeling, where state of

  6. Infinite and natural numbers

    E-print Network

    Jailton C. Ferreira

    2002-02-14

    The infinite numbers of the set M of finite and infinite natural numbers are defined starting from the sequence 0\\Phi, where 0 is the first natural number, \\Phi is a succession of symbols S and xS is the successor of the natural number x. The concept of limit of the natural number n, when n tends to infinite, is examined. Definitions and theorems about operations with elements of M, equivalence and equality of natural numbers, distance between elements of M and the order of the elements are presented.

  7. ESPECIAO ESPONTNEA EM POPULAES ESPACIALMENTE

    E-print Network

    de Aguiar, Marcus A. M.

    ESPECIA��O ESPONT�NEA EM POPULA��ES ESPACIALMENTE DISTRIBUÍDAS E PADR�ES DE DIVERSIDADE Elizabeth M público em geral. Em 1859 Charles Darwin deu passo fundamental para a solução desse problema com a dinâmica da enorme diversidade biológica existente em nosso planeta. Neste trabalho, discutimos um novo

  8. Nature's Nature: Ideas of Nature in Curricula for Environmental Education

    ERIC Educational Resources Information Center

    St Maurice, Henry

    2006-01-01

    Two contrasting sets of ideas about nature in environmental education are described. An analytical framework is developed from inter-disciplinary histories of ideas and used in evaluating a specific curriculum. In conclusion, some general implications are suggested for curricula in environmental education. [This article was reprinted from…

  9. Cincia feita em Portugal com

    E-print Network

    Instituto de Sistemas e Robotica

    Ciência feita em Portugal com mais impacto artigos As citações internacionais de artigos científicos produzidos em Portugal tiveram um "notório crescimento" nos últimos 23 anos, entre 1990 e 2012 das instituições nacionais tem progressivamente ganhado relevância. Um dado que surge numa altura em

  10. Nature Publishing Group Site Licenses

    E-print Network

    Cai, Long

    Pesquisa inspiradora em negócios, ciências sociais e humanas SciBX: Science Business eXchange Publicado em Nutrition European Journal of Human Genetics Eye Gene Therapy Genes & Immunity Heredity Hypertension

  11. Healing relationships with nature.

    PubMed

    Burkhardt, M A

    2000-02-01

    Our health is intimately connected to the health of our environment. The contemporary world view which sees a radical distinction between humans as subjects and world as object can obscure our recognition of how much we rely on nature for health and survival. Indigenous traditions and contemporary scholars remind us that we live in a universe in which all things are connected, and in which nature continues to offer its gifts in co-creative partnership for the health and wellbeing of all. Living in awareness of our relationship with nature enables us to open more to the experience of nature's nurturing. Many complementary therapies derive from ancient practices that involve nature in healing partnership. As nurses and midwives we must learn to expand our boundaries to encompass the many ways that nature partners with us for healing. PMID:11033652

  12. A Natural Selection

    NSDL National Science Digital Library

    Katherine M. Nielsen

    2005-10-01

    The high school science laboratory provides a natural environment for students to learn through scientist-teacher partnerships. A dynamic learning community, authentic inquiry, a deeper understanding of the nature of science, and learning about scientific careers are all benefits of scientist-teacher partnerships. This article focuses on the benefits of partnerships while describing how one specific partnership team developed a natural selection laboratory to integrate with a high school biology curriculum.

  13. The EM Earthquake Precursor

    NASA Astrophysics Data System (ADS)

    Jones, K. B., II; Saxton, P. T.

    2013-12-01

    Many attempts have been made to determine a sound forecasting method regarding earthquakes and warn the public in turn. Presently, the animal kingdom leads the precursor list alluding to a transmission related source. By applying the animal-based model to an electromagnetic (EM) wave model, various hypotheses were formed, but the most interesting one required the use of a magnetometer with a differing design and geometry. To date, numerous, high-end magnetometers have been in use in close proximity to fault zones for potential earthquake forecasting; however, something is still amiss. The problem still resides with what exactly is forecastable and the investigating direction of EM. After the 1989 Loma Prieta Earthquake, American earthquake investigators predetermined magnetometer use and a minimum earthquake magnitude necessary for EM detection. This action was set in motion, due to the extensive damage incurred and public outrage concerning earthquake forecasting; however, the magnetometers employed, grounded or buried, are completely subject to static and electric fields and have yet to correlate to an identifiable precursor. Secondly, there is neither a networked array for finding any epicentral locations, nor have there been any attempts to find even one. This methodology needs dismissal, because it is overly complicated, subject to continuous change, and provides no response time. As for the minimum magnitude threshold, which was set at M5, this is simply higher than what modern technological advances have gained. Detection can now be achieved at approximately M1, which greatly improves forecasting chances. A propagating precursor has now been detected in both the field and laboratory. Field antenna testing conducted outside the NE Texas town of Timpson in February, 2013, detected three strong EM sources along with numerous weaker signals. The antenna had mobility, and observations were noted for recurrence, duration, and frequency response. Next, two directional techniques were employed, resulting in three mapped, potential epicenters. The remaining, weaker signals presented similar directionality results to more epicentral locations. In addition, the directional results of the Timpson field tests lead to the design and construction of a third prototype antenna. In a laboratory setting, experiments were created to fail igneous rock types within a custom-designed Faraday Cage. An antenna emplaced within the cage detected EM emissions, which were both reproducible and distinct, and the laboratory results paralleled field results. With a viable system and continuous monitoring, a fracture cycle could be established and observed in real-time. Sequentially, field data would be reviewed quickly for assessment; thus, leading to a much improved earthquake forecasting capability. The EM precursor determined by this method may surpass all prior precursor claims, and the general public will finally receive long overdue forecasting.

  14. Warner College of Natural Resources Warner College of Natural

    E-print Network

    Collett Jr., Jeffrey L.

    , and Conservation Biology Forestry Geology Natural Resource Recreation and Tourism Natural Resources Management in the conservation and sustainable management of natural and cultural resources on Department of Defense landsWarner College of Natural Resources Warner College of Natural Resources Office in Natural Resources

  15. Nature: International Science Jobs

    NSDL National Science Digital Library

    Nature journal's jobs page contains an international science jobs search engine. This feature lets users search out potential employment based on subject, location, type of organization, and position.

  16. Natural natural disasters and economic disruption

    Microsoft Academic Search

    Yanos Zylberberg

    2010-01-01

    The cost of natural calamities is not limited to direct capital losses. Economies in the wake of severe shocks experience important slowdowns. I construct an exhaustive dataset of objective measures on cyclones and earthquakes worldwide between 1980 and 2006 and complement existing reports on direct damages. I then estimate the amplitude of indirect economic losses in the aftermath of catastrophes.

  17. NATURE.COM/NATURE 2 February 2012

    E-print Network

    Buehler, Markus J.

    32 MICROBIOLOGY RESISTANCE FIGHTERS The rocky road to an MRSA vaccine PAGE23 HIDDEN STRENGTHNonlinear failure of spider silk is secret of its success PAGE72 THE INTERNATIONAL WEEKLY JOURNAL OF SCIENCE #12;LETTER doi:10.1038/nature10739 Nonlinear material behaviour of spider silk yields robust webs Steven W

  18. Natural Resources Research Institute

    E-print Network

    Netoff, Theoden

    's computational fluid dynamics applied to fluid flow and heat· transfer has helped mining companies optimize plantGrowing Strong Industries Developing New Ideas Natural Resources Research Institute Nurturing Research Institute fosters the economic development of Minnesota's natural resources in an environmentally

  19. ``Evolution without Natural Selection''

    Microsoft Academic Search

    Charles Dixon

    1885-01-01

    BELIEVING as I do that the words of a reviewer should be final, it is with no small amount of hesitation that I pen the following few remarks on the review of my little work entitled ``Evolution without Natural Selection,'' which appeared in NATURE of November 12 (p. 26). The curious way in which my book has been misunderstood, and

  20. Design Inspired by Nature

    NSDL National Science Digital Library

    Integrated Teaching and Learning Program,

    Students discover how engineers can use biomimicry to enhance their designs. They learn how careful observation of nature — becoming a nature detective, so to speak — can lead to new innovations and products. In this activity, students reverse engineer a flower to glean design ideas for new products.

  1. Introduction to Exploring Nature

    ERIC Educational Resources Information Center

    Early Childhood Today, 2006

    2006-01-01

    Children are fascinated with the world of nature. From the tiniest of seeds to the highest of birds, they wonder "Why?" "How?" and "What can I do with it?" This paper provides intriguing nature activities that provide a solid starting point for expanding children's thinking and learning. Through these activities, children will be building skills…

  2. Nature's Advice Book

    ERIC Educational Resources Information Center

    Mahlin, Kathryn; Robertson, Amy

    2005-01-01

    What do can people learn from the world around them? Can a tree really teach something about life? Many times teachers provide students with facts about nature but fail to consider what one can learn from the natural world around them. After many months of exploring various ecosystems such as the prairie, rain forest, and desert, one of the…

  3. PREDICTION OF NATURAL DISASTERS

    Microsoft Academic Search

    OuYANG SHOUCHENG; YI LIN; WU YONG

    2000-01-01

    During the past 30 plus years, we have been dealing with several fundamental problems in prediction science. We believe that “the science of human natural disasters” (natural disasters affecting mankind) is not well addressed by the classical theory of dynamical systems. It is argued that there exist problems, when the theory of dynamic systems is used, related to (1) measurement

  4. Nature Foil Reliefs

    ERIC Educational Resources Information Center

    Lane, Shaw J.

    2012-01-01

    Nature has always been a source of inspiration for artists across the centuries. Artists such as Leonardo da Vinci, Georgia O'Keeffe, Ansel Adams, and Andy Goldsworthy all drew inspiration for their work from nature. Seeds come from the dried pods, which when planted and cared for, bear fruit. In this article, the author describes how her…

  5. Naturally Nonminimal Supersymmetry

    E-print Network

    David Wright

    1998-01-30

    We consider the bounds imposed by naturalness on the masses of superpartners for arbitrary points in nonminimal supersymmetric extensions of the standard model and for arbitrary messenger scales. This constitutes a significant generalization of previous work along these lines. We discuss appropriate measures of naturalness and the status of nonminimal supersymmetry in the light of recent experimental results.

  6. CONNECTICUT NATURAL DIVERSITY DATABASE

    EPA Science Inventory

    This is a statewide datalayer at 1:24,000 scale of general areas of concern with regards to state and federally listed Endangered, Threatened, and Special Concern species and significant natural communities. Locations of species and natural communities are based on data collecte...

  7. Is That Natural?

    NSDL National Science Digital Library

    2014-09-18

    Students will brainstorm ways that they use — and waste — natural resources. Also, they will respond to some facts about population growth and how people use petroleum. Lastly, students will consider the different ways that engineers interact with and use our natural resources.

  8. Natural gas monthly

    SciTech Connect

    Not Available

    1983-01-01

    This report presents current data on the consumption, disposition, production, prices, storage, import and export of natural gas in the United States. Also included are operating and financial data for major interstate natural gas pipeline companies plus data on fillings, ceiling prices, and transportation under the Natural Gas Policy Act of 1978. A feature article, entitled Main Line Natural Gas Sales to Industrial Users, 1981, is included. Highlights of this month's publication are: Marketed production of natural gas during 1982 continued its downward trend compared to 1981, with November production of 1511 Bcf compared to 1583 Bcf for November 1981; total natural gas consumption also declined when compared to 1981; as of November 1982, working gas in underground storage was running ahead of a similar period in 1981 by 109 Bcf (3.4 percent); the average wellhead price of natural gas continued to rise in 1982; and applications for determination of maximum lawful prices under the Natural Gas Policy Act (NGPA) showed a decrease from October to November, principally for Section 103 classification wells (new onshore production wells).

  9. Epidemics after Natural Disasters

    Microsoft Academic Search

    John T. Watson; Michelle Gayer; Maire A. Connolly

    2007-01-01

    The relationship between natural disasters and com- municable diseases is frequently misconstrued. The risk for outbreaks is often presumed to be very high in the chaos that follows natural disasters, a fear likely derived from a perceived association between dead bodies and epidem- ics. However, the risk factors for outbreaks after disasters are associated primarily with population displacement. The availability

  10. Thermoacoustic natural gas liquefier

    SciTech Connect

    Swift, G.; Gardner, D.; Hayden, M.; Radebaugh, R. [National Inst. of Standards and Technology, Gaithersburg, MD (United States); Wollan, J. [Cryenco, Inc. (United States)

    1996-07-01

    This is the final report of a two-year, Laboratory-Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). This project sought to develop a natural-gas-powered natural-gas liquefier that has absolutely no moving parts and requires no electrical power. It should have high efficiency, remarkable reliability, and low cost. The thermoacoustic natural-gas liquefier (TANGL) is based on our recent invention of the first no-moving-parts cryogenic refrigerator. In short, our invention uses acoustic phenomena to produce refrigeration from heat, with no moving parts. The required apparatus comprises nothing more than heat exchangers and pipes, made of common materials, without exacting tolerances. Its initial experimental success in a small size lead us to propose a more ambitious application: large-energy liquefaction of natural gas, using combustion of natural gas as the energy source. TANGL was designed to be maintenance-free, inexpensive, portable, and environmentally benign.

  11. AVALIAÇÃO NUTRICIONAL E DESENVOLVIMENTO PONDO ESTATURAL DE CRIANÇAS FALCÊMICAS NO NORDESTE DO BRASIL Nutritional assessment and weight-height development of sickle cell children in Northeast Brazil

    Microsoft Academic Search

    Maria de Fátima Rebouças; Jose Brandão Neto; Carlos Antonio; Bruno da Silva

    2009-01-01

    RESUMO Objetivo: Avaliar o desenvolvimento pondo-estatural e o perfil nutricional de uma amostra de população infantil portadora de anemia falciforme (GE), relacionando-o com os níveis séricos de zinco e a idade óssea, comparados a um grupo de crianças eutróficas (GC) da mesma região do Nordeste do Brasil. Métodos: Estudaram-se 66 crianças portadoras de anemia falciforme (GE) e 50 eutróficas (GC).

  12. DESENVOLVIMENTO DE UM MODELO DE SIMULACAO PARA ANALISE DA CADEIA DE SUPRIMENTOS DE PETROLEO E DISTRIBUICAO DE DERIVADOS DA PETROBRAS NA REGIAO

    Microsoft Academic Search

    Juliana S. G. Yonamine; Bárbara C. Pereira; Heitor M. Caulliraux; Ivan de Pellegrin; Luis Cláudio Moreira Paschoal

    This paper describes part of a project developed in a partnership between Centro de Pesquisa e Desenvolvimento - CENPES\\/PETROBRAS and Grupo de Produção Integrada - GPI\\/COPPE\\/UFRJ. The main objective is to develop a simulation model to support understanding how PETROBRAS's downstream supply-chain's logistics works, focusing on oil's flows and stocks. The project's first stage is described, approaching the following topics:

  13. Natural History Museum: British Natural History

    NSDL National Science Digital Library

    Although some might fear that limited land resources and the usual development pressures are working to reduce Britain's natural history to footnote status, this website from the Natural History Museum in London effectively documents the UK's impressive biological and geological diversity. The site consists of interactive database features as well as videos (in both Windows Media and Quicktime formats). Exploring Biodiversity, an interactive introduction for students to UK biodiversity, allows users to compare the flora of different UK postal districts and also to download a version of WORLDMAP, the Museum's innovative distribution analysis software. The Earth Lab Datasite is a searchable database of fossils, rocks and minerals organized in part by geographic distribution. The Postcode Plants Database allows users to generate local lists of UK plants and/or animals. The British Natural History video, produced by the Museum's Darwin Centre, presents an online tour of the UK's wildlife scene, while Ornithology of the Orkney Islands looks at the work of bird researcher on these Scottish isles and also includes a discussion of migration studies with Museum ornithologist Douglas Russell. The site is best viewed with Netscape Communicator versions 4.5 to 4.8 and Microsoft Internet Explorer version 5 and later.

  14. Semaine portes-ouvertes du DIMANCHE 11 au vendredi 16 JANVIER dans tous nos groupes d'arts martiaux! ACTIVIT CODE LUDIK NIVEAU HORAIRE LOCAL DURE EM M NM EM M NM EM M NM EM M NM EM M NM EM M NM

    E-print Network

    'arts martiaux! Remarques ACTIVITÉ CODE LUDIK NIVEAU HORAIRE LOCAL DURÉE EM M NM EM M NM EM M NM EM M NM EM M NM EM M NM Club d'Aïkido 02 020 0101 Débutant Lu 17h à 18h25 (cours) et Ve 18h30 à 20h25 (pratique ACTIVITÉ CODE LUDIK NIVEAU HORAIRE LOCAL DURÉE EM M NM EM M NM EM M NM EM M NM EM M NM EM M NM Club de

  15. Emergency Medicine Resident Involvement in EMS

    Microsoft Academic Search

    Adam M. Ray; David P. Sole

    2007-01-01

    Emergency Medical Services (EMS) activities are a required component of Emergency Medicine (EM) residency training. To determine resident involvement with EMS, all 135 Accreditation Council for Graduate Medical Education-accredited and 34 American Osteopathic Association-accredited EM residencies were surveyed in June 2005 regarding the EMS activities required of their residents. One hundred twelve surveys were completed (66% response rate). Observing with

  16. PRODUÇÃO SUSTENTÁVEL EM RESERVAS EXTRATIVISTAS

    Microsoft Academic Search

    Jose Otavio Valiante; Osmar Siena

    2008-01-01

    Este trabalho discute questões relacionadas à produção sustentável em Reservas Extrativistas (RESEX). Com a finalidade de identificar temas prioritários foi aplicada a ferramenta Brainwriting 6-3-5, tendo como pano de fundo a Reserva Extrativista do Rio Ouro Preto\\/RO, com uma equipe de técnicos do IBAMA em Guajará-Mirim\\/RO e representantes da comunidade da RESEX. Em um segundo momento foi aplicado um questionário

  17. The Natural Inquirer

    NSDL National Science Digital Library

    The Natural Inquirer is a science education resource journal to be used with learners ranging from Grade 5 and higher, with a focus on the secondary (grades 7-12) learner. It contains articles about natural resource research conducted by USDA Forest Service scientists. These are scientific journal articles that have been reformatted to meet the needs of audiences who are new to the area of science. The articles are easier to understand, shortened, more aesthetically pleasing to the eye, contain glossaries, and include hands-on activities. The goal of this magazine is to promote critical thinking, scientific inquiry, and investigation while learning about our natural resources and the environment.

  18. Nature North Zine

    NSDL National Science Digital Library

    Nature North Zine is a folksy, online magazine focused on the natural history of Manitoba and surrounding regions of North America. Site visitors can access sections for Spring, Summer, Fall, and Winter. The seasonal sections contain a variety of brief articles (from different dates) that address such subjects as wood frogs, native plant gardening, violets, snow snakes, and amphibians of Manitoba. The site also contains some very nice nature photographs in the Dragonflies of Manitoba and Images of Manitoba sections. Be sure not to miss the beautiful image of the Bohemian waxwing with a bright, red berry in its beak.

  19. Drawing on Nature

    NSDL National Science Digital Library

    Joe Dirnberger

    2006-07-01

    Awaken and sharpen your students' powers of observation by using art, particulary drawing, in your science classroom. There is a commonality between methods that artists employ in portraying their subjects and the methods that those studying nature employ in learning about the world, and this similarity can provide encouragement in leading science students to study nature via art. One way to achieve this objective is to have students create a Naturalist's Journal, as described in this article, where drawing is an essential part of a process to gather information from the natural world and to synthesize the field and lab experiences from class.

  20. Nature Tables: Stimulating Children's Interest in Natural Objects

    ERIC Educational Resources Information Center

    Tomkins, Stephen; Tunnicliffe, Sue Dale

    2007-01-01

    Primary school pupils in the UK today may be less familiar with natural objects, less exposed to formal natural history teaching and have less time given to school-based observation and discussion of natural objects. This study of children's responses to a "Nature Table" of displayed natural objects was designed to assess pupils' knowledge of…

  1. Syllabus Natural Resource Policy & Economics 1 Natural Resource Policy & Economics

    E-print Network

    Slatton, Clint

    of concepts and theories of natural resource policy and economics Further your knowledge of major naturalSyllabus ­ Natural Resource Policy & Economics 1 Natural Resource Policy & Economics FOR6934 (3 natural resources administration and policies in the United States; policy components; policy formation

  2. EMS adaptation for climate change

    NASA Astrophysics Data System (ADS)

    Pan, C.; Chang, Y.; Wen, J.; Tsai, M.

    2010-12-01

    The purpose of this study was to find an appropriate scenario of pre-hospital transportation of an emergency medical service (EMS) system for burdensome casualties resulting from extreme climate events. A case of natural catastrophic events in Taiwan, 88 wind-caused disasters, was reviewed and analyzed. A sequential-conveyance method was designed to shorten the casualty transportation time and to promote the efficiency of ambulance services. A proposed mobile emergency medical center was first constructed in a safe area, but nearby the disaster area. The Center consists of professional medical personnel who process the triage of incoming patients and take care of casualties with minor injuries. Ambulances in the Center were ready to sequentially convey the casualties with severer conditions to an assigned hospital that is distant from the disaster area for further treatment. The study suggests that if we could construct a spacious and well-equipped mobile emergency medical center, only a small portion of casualties would need to be transferred to distant hospitals. This would reduce the over-crowding problem in hospital ERs. First-line ambulances only reciprocated between the mobile emergency medical center and the disaster area, saving time and shortening the working distances. Second-line ambulances were highly regulated between the mobile emergency medical center and requested hospitals. The ambulance service of the sequential-conveyance method was found to be more efficient than the conventional method and was concluded to be more profitable and reasonable on paper in adapting to climate change. Therefore, additional practical work should be launched to collect more precise quantitative data.

  3. Coregistration of Eye Movements and EEG in Natural Reading: Analyses and Review

    Microsoft Academic Search

    Olaf Dimigen; Werner Sommer; Annette Hohlfeld; Arthur M. Jacobs; Reinhold Kliegl

    2011-01-01

    Brain-electric correlates of reading have traditionally been studied with word-by-word presentation, a condition that eliminates important aspects of the normal reading process and precludes direct comparisons between neural activity and oculomotor behavior. In the present study, we investigated effects of word predictability on eye movements (EM) and fixation-related brain potentials (FRPs) during natural sentence reading. Electroencephalogram (EEG) and EM (via

  4. A Strategy for Collecting and Analyzing Multiple Electromagnetic (EM) Data Sets for Pre- Earthquake Signal Investigations

    NASA Astrophysics Data System (ADS)

    Bleier, T. E.; Cutler, D.; Dunson, C.; Bortnik, D.; Calais, D.; Dautermann, T.; Maniscalco, M.

    2006-12-01

    There have been a number of reports of interesting electromagnetic (EM) signals detected prior to large earthquakes, but the subsequent analyses have been hampered by insufficient instrumentation to cover large geographical areas, and enough data history to allow statistical analyses of potential "earthquake signatures". The EM data analysis requires that several basic questions be addressed: "What are the "normal" background signatures (both natural and man-made) for each instrument during non-earthquake days?" and "What are the statistically "unique" signatures associated with large earthquakes?" Both ground and space sensors are subjected to a wide variety of non-earthquake EM noise (geomagnetic micropulsations, SRS, Schumann Resonance and man-made EM noise). We first show the top-level strategy developed by QuakeFinder and our partners to collect large volumes of satellite EM data (DEMETER and QuakeSat), and ground EM data (from QuakeFinder's CalMagNet and Berkeley's magnetometer network, and total electron content (TEC) data from both US and Japanese GPS networks). We show a wide variety of algorithms used to identify and characterize natural and man-made EM noise, and then compare the information from multiple instrument platforms and algorithms to help discriminate between "normal" EM noise sources and potentially "earthquake-generated" EM noise. This data collection, algorithm generation, and analysis processes are evolving from a simple "post quake" analysis, to a daily ingest, data fusion, and strategy refinement at our QuakeFinder Data Center. We also recognize that there may never be enough instrumentation located at the right place and at the right time, so we also include the strategy to use multiple, portable instruments to collect and measure potential post-quake EM signals near the epicenter area.

  5. Alexandre Reeberg De Mello Stemmer Desenvolvimento de algoritmos para inspeo visual automtica de placas de circuito impresso

    E-print Network

    Floeter, Sergio Ricardo

    de Ônibus Urbano Daniel Sebastian Vargas Cristancho Montez Técnicas de Escalomanto de Sono e Modelos controle de formação para sistemas multi veículos com canais de comunicação não confiáveis Jonatas Matthies Tarefas em Sistemas de Tempo Real Leonardo Salsano De Assis Eduardo Algoritmos par aEscalonamento de

  6. Natural flavor conservation

    SciTech Connect

    Rothman, A.C.; Kang, K.

    1980-01-01

    It is shown that the fiats of Natural Flavor Conservation for an arbitrary U(1)-unbroken gauge theory require that all quarks of a given charge and helicity transform identically under the gauge group.

  7. Chemical Nature of Citrin

    Microsoft Academic Search

    V. Bruckner; A. Szent-Györgyi

    1936-01-01

    IN a previous note (Rusznyák et al.) one of us reported on the isolation and physiological activity (vitamin nature) of the crystalline flavone fraction of lemon juice. The substance, being different from other known flavones, was termed `citrin'.

  8. Natural Aggregate: A Primer

    NSDL National Science Digital Library

    Bill Langer

    This slide show provides an introduction to the production and uses of natural aggregate. Topics include some definitions, uses, and demand for aggregate. There is also information on its occurrence, mining, and production.

  9. Natural drinking strategies

    E-print Network

    Kim, Wonjung

    We examine the fluid mechanics of drinking in nature. We classify the drinking strategies of a broad range of creatures according to the principal forces involved, and present physical pictures for each style. Simple scaling ...

  10. Natural Selection Lesson

    NSDL National Science Digital Library

    David Joiner

    The Natural Selection lesson uses a Monte Carlo model of spot size with variability between generations in an environment with predators to study how variation and environment can affect a species over time.

  11. Natural lighting and skylights 

    E-print Network

    Evans, Benjamin Hampton

    1961-01-01

    There are many physiological and psychological factors which enter into the proper design of space for human occupancy. One of these elements is light. Both natural light and manufactured light are basic tools with which any designer must work...

  12. Immigration and Naturalization Statistics

    NSDL National Science Digital Library

    United States. Immigration and Naturalization Service.

    The Immigration and Naturalizations Service Statistics site provides "comprehensive annual immigration statistics from 1994-1996, as well as state estimates of the United States' illegal alien resident and foreign-born populations."

  13. Natural gas monthly

    SciTech Connect

    NONE

    1996-05-01

    This document highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Data presented include volume and price, production, consumption, underground storage, and interstate pipeline activities.

  14. Natural Resources Defense Council

    NSDL National Science Digital Library

    From the Natural Resources Defense Council, this website has the latest news from the Hill, plus information everyone needs on the state of our air, water, land and health. Initial contents include "State of Nature," a regular bulletin on environmental legislation; action guidelines; and findings on subjects ranging from children and environmental carcinogens to the pollution of U.S. coastal waters. Features in development include action alerts; consumer-oriented facts and FAQs; environmental multimedia clips; research tips; and more. The Natural Resources Defense Council is a national organization working in courtrooms, legislative chambers, regulatory agencies and the public arena to protect the world's natural resources and ensure a healthy environment for all.

  15. Natural Disasters in Florida

    NSDL National Science Digital Library

    Claudia Markham-Ahl

    2011-10-18

    The students will translate the information they have gained into a poster/picture of Florida's natural disasters, label the storms, and list on the poster at least three safety practices to use with each storm.

  16. Metamaterials: Naturally hyperbolic

    NASA Astrophysics Data System (ADS)

    Narimanov, Evgenii E.; Kildishev, Alexander V.

    2015-04-01

    Natural hyperbolic materials hold the key to unlocking the full potential of hyperbolic media in nanophotonics. Until now no such materials were available for visible light but recent work finally brings down this roadblock.

  17. Is image steganography natural?

    PubMed

    Martín, Alvaro; Sapiro, Guillermo; Seroussi, Gadiel

    2005-12-01

    Steganography is the art of secret communication. Its purpose is to hide the presence of information, using, for example, images as covers. We experimentally investigate if stego-images, bearing a secret message, are statistically "natural." For this purpose, we use recent results on the statistics of natural images and investigate the effect of some popular steganography techniques. We found that these fundamental statistics of natural images are, in fact, generally altered by the hidden "nonnatural" information. Frequently, the change is consistently biased in a given direction. However, for the class of natural images considered, the change generally falls within the intrinsic variability of the statistics, and, thus, does not allow for reliable detection, unless knowledge of the data hiding process is taken into account. In the latter case, significant levels of detection are demonstrated. PMID:16370457

  18. Nature of Science

    NSDL National Science Digital Library

    Center for Technology and Teacher Education

    2011-09-13

    Teacher resource to build background knowledge of Nature of Science and how to include in classroom instruction. This website includes a lesson plan and several activities that help students learn about the skill of observation in science.

  19. Nature Picture Library

    NSDL National Science Digital Library

    While a commercial enterprise, the Nature Picture Library offers viewers free online access to thousands of high-resolution photographs in its database. Containing fantastic shots of flora and fauna in settings of every variety, the Nature Picture Library is a great graphic resource for those in search of images of the natural world. Images can be purchased for direct downloads or can be stored online for free by registered users in lightboxes of their own design. The picture library allows registrants to create and store as many as fifty lightboxes for online consultation. A great way to see the world and all its creatures, the Nature Picture Library is sure to provoke awe, admiration, and devotion from users of every age.

  20. Tifft Farm Nature Preserve.

    ERIC Educational Resources Information Center

    Benjamin, Thomas B.; Gannon, David J.

    1980-01-01

    Described are the creation, development, activities, and programs of Tifft Farm, a 264-acre nature preserve and environmental education center in Buffalo, New York, constructed on a sanitary landfill. (BT)

  1. Modeling Natural Selection

    NSDL National Science Digital Library

    Christine Lotter

    2011-02-01

    In their research, scientists generate, test, and modify scientific models. These models can be shared with others and demonstrate a scientist's understanding of how the natural world works. Similarly, students can generate and modify models to gain a bet

  2. Natural Building Project

    NSDL National Science Digital Library

    Morgan, Robert

    This document provides a basic outline for a high-school level natural building course taught by Robert Morgan of Open Meadow High School. The main goal of the course was to introduce students to natural building and construction methods. The course's objectives, class activities, suggested materials and research projects are outlined. A summary of a field trip activity is also included. This document may be downloaded in Microsoft Word Doc file format.

  3. Natural Resources Canada

    NSDL National Science Digital Library

    This website is home to Natural Resources Canada (NRCan), a government agency dealing with natural resource issues important to Canadians. It covers energy, climate change, earthquakes, geography, geology, floods, landslides, minerals and metals, forest fires, mining, remote sensing, and forestry. This site links to numerous government agencies, including the Geological Survey of Canada, Canadian Forest Service, and the Office of Energy. Also offered are a Kid's page with activities, information for teachers, and links to maps, databases, publications, and library resources.

  4. NatureNews

    NSDL National Science Digital Library

    NatureNews is the science news website of the journal Nature. The site provides a daily summary of news about research and discoveries in life, physical and applied sciences, and clinical medicine. Materials include a daily top story, featured stories, videos, a news blog, and event announcements. There are also longer format reports, opinion features, podcasts, and an archive of past issues organized by year and month.

  5. Fossil Fuels: Natural Gas

    NSDL National Science Digital Library

    John Pratte

    This lesson provides an introduction to the use of natural gas as an energy source. Topics include its advantages (cleanliness, fewer carbon emissions), disadvantages (difficulty in transport and storage), sources, and usage. There is also a discussion of the creation and production of natural gas, the United States' production and reserves, and some potential new sources (coal bed methane, methane hydrates). The lesson includes an activity in which students investigate porosity and permeability in simulated sediments.

  6. Natural Resource Technician DACUM

    NSDL National Science Digital Library

    The Advanced Technology Environmental and Energy Center (ATEEC) provides this DACUM, or curriculum development tool, for natural resources technician training programs. The document includes a general occupation description and required areas of competence like conducting natural resource inventories, conducting land potential assessment activities and delineating property boundaries. Users must download this resource for viewing, which requires a free log-in. There is no cost to download the item. The document is available in PDF file format.

  7. Natural hybridization and conservation

    Microsoft Academic Search

    Meritxell Genovart

    2009-01-01

    This review deals with natural hybridization, an important subject in conservation biology. Natural hybridization is defined\\u000a as the secondary contact between two populations that have evolved separately over a long period of time. This process is\\u000a uncommon in terms of the total number of individuals involved, but is much less unusual if we consider the number of species\\u000a that hybridize.

  8. USGS: Natural Hazards Gateway

    NSDL National Science Digital Library

    This portal provides access to maps, data, and other information on the distribution and frequency of natural hazards in the United States. The material is arranged into seven categories: earthquakes, floods, hurricanes, landslides, tsunamis, volcanoes, and wildfires. There are also links to disaster emergency and relief organizations and to real-time resources such as RSS feeds, advisories, and the Natural Hazards Support System (NHSS), a system that enables users to monitor events as they occur anywhere on Earth.

  9. DOUTORADO EM TEOLOGIA Edital 2014/02

    E-print Network

    DOUTORADO EM TEOLOGIA Edital 2014/02 Este edital se destina especificamente a candidatos ao Doutorado em Teologia, com início em agosto de 2014. 1. Objetivo: O Programa de Doutorado em Teologia visa o eclesiásticos. 2. Duração: 48 meses, com início em agosto de 2014 e término em julho de 2018. 3. Áreas de

  10. Natural theology and natural philosophy in the late Renaissance

    E-print Network

    Woolford, Thomas

    2012-04-10

    Natural theology and natural philosophy in the late Renaissance Thomas Woolford Trinity College This dissertation is submitted to the University of Cambridge for the degree of Doctor of Philosophy November 2011 i... , Mary. SDG iii Natural theology and natural philosophy in the late Renaissance T. A. Woolford Despite some great strides in relating certain areas of Christian doctrine to the study of the natural world, the category ‘natural theology’ has...

  11. Identified EM Earthquake Precursors

    NASA Astrophysics Data System (ADS)

    Jones, Kenneth, II; Saxton, Patrick

    2014-05-01

    Many attempts have been made to determine a sound forecasting method regarding earthquakes and warn the public in turn. Presently, the animal kingdom leads the precursor list alluding to a transmission related source. By applying the animal-based model to an electromagnetic (EM) wave model, various hypotheses were formed, but the most interesting one required the use of a magnetometer with a differing design and geometry. To date, numerous, high-end magnetometers have been in use in close proximity to fault zones for potential earthquake forecasting; however, something is still amiss. The problem still resides with what exactly is forecastable and the investigating direction of EM. After a number of custom rock experiments, two hypotheses were formed which could answer the EM wave model. The first hypothesis concerned a sufficient and continuous electron movement either by surface or penetrative flow, and the second regarded a novel approach to radio transmission. Electron flow along fracture surfaces was determined to be inadequate in creating strong EM fields, because rock has a very high electrical resistance making it a high quality insulator. Penetrative flow could not be corroborated as well, because it was discovered that rock was absorbing and confining electrons to a very thin skin depth. Radio wave transmission and detection worked with every single test administered. This hypothesis was reviewed for propagating, long-wave generation with sufficient amplitude, and the capability of penetrating solid rock. Additionally, fracture spaces, either air or ion-filled, can facilitate this concept from great depths and allow for surficial detection. A few propagating precursor signals have been detected in the field occurring with associated phases using custom-built loop antennae. Field testing was conducted in Southern California from 2006-2011, and outside the NE Texas town of Timpson in February, 2013. The antennae have mobility and observations were noted for recurrence, duration, and frequency response. At the Southern California field sites, one loop antenna was positioned for omni-directional reception and also detected a strong First Schumann Resonance; however, additional Schumann Resonances were absent. At the Timpson, TX field sites, loop antennae were positioned for directional reception, due to earthquake-induced, hydraulic fracturing activity currently conducted by the oil and gas industry. Two strong signals, one moderately strong signal, and approximately 6-8 weaker signals were detected in the immediate vicinity. The three stronger signals were mapped by a biangulation technique, followed by a triangulation technique for confirmation. This was the first antenna mapping technique ever performed for determining possible earthquake epicenters. Six and a half months later, Timpson experienced two M4 (M4.1 and M4.3) earthquakes on September 2, 2013 followed by a M2.4 earthquake three days later, all occurring at a depth of five kilometers. The Timpson earthquake activity now has a cyclical rate and a forecast was given to the proper authorities. As a result, the Southern California and Timpson, TX field results led to an improved design and construction of a third prototype antenna. With a loop antenna array, a viable communication system, and continuous monitoring, a full fracture cycle can be established and observed in real-time. In addition, field data could be reviewed quickly for assessment and lead to a much more improved earthquake forecasting capability. The EM precursors determined by this method appear to surpass all prior precursor claims, and the general public will finally receive long overdue forecasting.

  12. Induction coilgun for EM mortar

    Microsoft Academic Search

    R. Kaye; B. Turman; M. Aubuchon; D. Lamppa; G. Mann; Edward van Reuth; K. Fulton; G. Malejko; P. Magnotti; D. Nguyen; D. Borgwarth; A. Johnson; R. Poppe

    2007-01-01

    The Defense Advanced Research Projects Agency is investigating electromagnetic (EM) guns for the next generation combat vehicle providing improved performance and survivability without the use of propellant. The two-year program was initiated in 2005 to design a coilgun and a railgun to launch an existing mortar round with an EM armature in laboratory conditions at speeds to increase range beyond

  13. CURSO DE ESPECIALIZAO EM FISIOTERAPIA

    E-print Network

    Floeter, Sergio Ricardo

    dois módulos no domingo e dois no Hospital Universitário em Florianópolis. LOCAL: Rua Pedro João. Enviar Documentação para: Universidade Federal de Santa Catarina - Campus Araranguá Rua Pedro João$ 425,00. Vencimento no 5º dia útil do mês. (1ª parcela em julho de 2012). PROGRAMA Virologia Genética

  14. Darwin's Second Idea Natural Selection

    E-print Network

    Darwin's Second Idea ­ Natural Selection · Evolution: controversial? · Natural selection ­ Darwin · 15 species · Differences in beak size, shape #12;Darwin's Finches Can natural selection account's postulates ­ Controversial? ­ Two examples of NS #12;Charles Darwin Darwin's Ideas 1. Species evolve over

  15. SIGNIFICANT NATURAL HERITAGE AREAS (NC)

    EPA Science Inventory

    The North Carolina Department of Environment and Natural Resources, Division of Parks and Recreation, Natural Heritage Program in cooperation with the NC Center for Geographic Information & Analysis, developed the Significant Natural Heritage Areas digital data to determine the a...

  16. Natural Freedom and Wilderness Survival

    ERIC Educational Resources Information Center

    Welton, George E.

    1978-01-01

    The "naturalism" of Jean Jacques Rousseau offers a philosophical base for wilderness survival: the renewal of participants in nature so that they can reenter civilization with a proper balance of natural and civil liberty. (MJB)

  17. Agrobacterium: nature’s genetic engineer

    PubMed Central

    Nester, Eugene W.

    2015-01-01

    Agrobacterium was identified as the agent causing the plant tumor, crown gall over 100 years ago. Since then, studies have resulted in many surprising observations. Armin Braun demonstrated that Agrobacterium infected cells had unusual nutritional properties, and that the bacterium was necessary to start the infection but not for continued tumor development. He developed the concept of a tumor inducing principle (TIP), the factor that actually caused the disease. Thirty years later the TIP was shown to be a piece of a tumor inducing (Ti) plasmid excised by an endonuclease. In the next 20 years, most of the key features of the disease were described. The single-strand DNA (T-DNA) with the endonuclease attached is transferred through a type IV secretion system into the host cell where it is likely coated and protected from nucleases by a bacterial secreted protein to form the T-complex. A nuclear localization signal in the endonuclease guides the transferred strand (T-strand), into the nucleus where it is integrated randomly into the host chromosome. Other secreted proteins likely aid in uncoating the T-complex. The T-DNA encodes enzymes of auxin, cytokinin, and opine synthesis, the latter a food source for Agrobacterium. The genes associated with T-strand formation and transfer (vir) map to the Ti plasmid and are only expressed when the bacteria are in close association with a plant. Plant signals are recognized by a two-component regulatory system which activates vir genes. Chromosomal genes with pleiotropic functions also play important roles in plant transformation. The data now explain Braun’s old observations and also explain why Agrobacterium is nature’s genetic engineer. Any DNA inserted between the border sequences which define the T-DNA will be transferred and integrated into host cells. Thus, Agrobacterium has become the major vector in plant genetic engineering. PMID:25610442

  18. The catastrophic nature of humans

    NASA Astrophysics Data System (ADS)

    Guthrie, Richard

    2015-06-01

    Natural landscapes are shaped by frequent moderate-sized events, except for the rare catastrophe. Human modifications to the Earth's surface are, compared with natural processes, increasingly catastrophic.

  19. Natural Sciences School of Biosciences

    E-print Network

    Miall, Chris

    , psychology, sport and exercise sciences and geography. Natural Sciences degree programmes p Natural Sciences Chemistry Maths Sport and Exercise Sciences Geography Earth Sciences Psychology Biochemistry #12;Structure

  20. Multi-natural inflation

    NASA Astrophysics Data System (ADS)

    Czerny, Michael; Takahashi, Fuminobu

    2014-06-01

    We propose a multi-natural inflation model in which the single-field inflaton potential consists of two or more sinusoidal potentials that are comparable in size but have different periodicity with a possible non-zero relative phase. The model is versatile enough to realize both large-field and small-field inflation. We show that, in a model with two sinusoidal potentials, the predicted values of the spectral index and tensor-to-scalar ratio lie within the 1? region of the Planck data. In particular, there is no lower bound on the decay constants in contrast to the original natural inflation. We also show that, in a certain limit, multi-natural inflation can be approximated by a hilltop quartic inflation model.

  1. Lamarck and Natural Selection

    NSDL National Science Digital Library

    Charles Darwin defined natural selection in "On the Origin of Species," however, Darwin did not invent the idea of evolution and not everyone saw his ideas as original. The shadow of Lamarckian theory which Darwin wanted desperately to escape is a genuine scientific precursor and what has become known as the Lamarckian Heresy has maintained a presence on the fringes of biology to this day. This radio broadcast explores who Lamarck was, how natural selection escaped from his shadow and gained acceptance from the scientific establishment, and whether any evidence has emerged that might challenge the elegant simplicity of natural selection. There is discussion about whether what is passed on to descendants may be affected by experience and environment; the experiments performed by Mendel that led to genetics; the role of DNA, gene mutations, and networks of genes in epigenetics; and how there seem to be fewer genes in humans than expected. The 2003 broadcast is 57 minutes in length.

  2. Arkansas Natural Resources Commission

    NSDL National Science Digital Library

    In 1937, the Arkansas General Assembly enacted the nation's first conservation district law. Since that time, the state has grown to create entities like the Arkansas Natural Resources Commission to help protect its various natural resources. On this site, visitors can look through seven different sections, including Water Development, Conservation, and Arkansas Water Plan. Within each of these sections, visitors can look through a range of working papers, conservation documents, and online GIS data sets based on state-wide natural resource surveys. Moving on, the News & Publications features video blog posts, updates about conservation programs, and more. The Rules area is another helpful section of the site, providing a wide range of current rules created by the Commission to govern Arkansas wetlands, tax credits, groundwater management, and poultry management.

  3. The Human Nature Review

    NSDL National Science Digital Library

    While attempting to cover one area of scholarly discipline in a Web site may be a formidable task, the editors of the Human Nature Review are concerned with any substantive scholarship or research dealing with human nature in its entirety. As the Web site notes: "Our goal is to bring into communication the variety of approaches to the understanding of human nature which have a regrettable tendency to be less in touch with one another than they might." The site is edited by Dr. Ian Pitchford of the Creighton University School of Medicine and Professor Robert M. Young. Prominent features of the site include an online dictionary of mental health, a daily review (sent as an email, if users so desire) of updates on ongoing scholarship in the fields of psychology and psychotherapy, and a number of complete online texts. Finally, the site also houses hundreds of book reviews, contributed by scholars from a diverse set of fields, on works of topical importance.

  4. letters to nature NATURE |VOL 407 |26 OCTOBER 2000 |www.nature.com 983

    E-print Network

    letters to nature NATURE |VOL 407 |26 OCTOBER 2000 |www.nature.com 983 infrared absorption maximum, and quantum dots. Science 271, 933±937 (1996). 3. Murray, C. B., Norris, D. J. & Bawendi, M. G. Synthesis

  5. Nature: The Mouse Genome

    NSDL National Science Digital Library

    2003-01-01

    This Web site from the journal Nature offers a one-stop online resource for information on the mouse genome -- "the experimental key to the human genome." Visitors have free access to all content from the journal's special mouse genome issue. Web features include an interactive timeline detailing the history of the mouse in genetics, related news articles and commentary, Web links, and more. Scientific papers and letters to Nature are also available for those who would like to delve into the subject at depth. Additionally, the site provides a selection of classic research papers free to registered users until March 5, 2003.

  6. Natural warm inflation

    SciTech Connect

    Visinelli, Luca, E-mail: u0583682@utah.edu [Department of Physics and Astronomy, University of Utah, 115 South 1400 East 201, Salt Lake City, Utah 84112-0830 (United States)

    2011-09-01

    We derive the requirements that a generic axion-like field has to satisfy in order to play the role of the inflaton field in the warm inflation scenario. Compared to the parameter space in ordinary Natural Inflation models, we find that the parameter space in our model is enlarged. In particular, we avoid the problem of having an axion decay constant f that relates to the Planck scale, which is instead present in the ordinary Natural Inflation models; in fact, our model can easily accommodate values of the axion decay constant that lie well below the Planck scale.

  7. Sustainable Natural Resource Engineering

    NSDL National Science Digital Library

    Lynch, Daniel

    Natural Resources figure centrally in the understanding of Sustainability and the Professional responsibility of engineers. A teaching approach is outlined that a) utilizes standard Engineering preparation in applied mathematics; b) applies it as a unifying theme across the natural resource field; c) embeds basic undergraduate exposure to ecological and economic concepts; and d) operates via desktop simulation tools accessible to all university students. The approach suggested is related to the new American Society of Civil Engineers (ASCE) Body of Knowledge (BOK2) requirement of Sustainability.

  8. Nature: The Human Genome

    NSDL National Science Digital Library

    This special Web Focus from the journal Nature presents research papers that "serve as the definitive historical record for the sequences and analyses of human chromosomes -- the ultimate results of the Human Genome Project." Papers are available for chromosomes 6, 7, 14, 20, 21, 22, and Y, which readers can access (no subscription required) by clicking on the image of the corresponding chromosome. The papers for chromosome 6 are the most recent, published in the October 23, 2003 issue of Nature. The website also offers free feature articles on the subject.

  9. Natural language processing.

    PubMed

    Joshi, A K

    1991-09-13

    Natural language processing (NLP) is the study of mathematical and computational modeling of various aspects of language and the development of a wide range of systems. These include spoken language systems that integrate speech and natural language; cooperative interfaces to databases and knowledge bases that model aspects of human-human interaction; multilingual interfaces; machine translation; and message-understanding systems, among others. Research in NLP is highly interdisciplinary, involving concepts in computer science, linguistics, logic, and psychology. NLP has a special role in computer science because many aspects of the field deal with linguistic features of computation and NLP seeks to model language computationally. PMID:17831443

  10. Natural Cycles, Gases

    NASA Technical Reports Server (NTRS)

    Douglass, Anne R.; Jackman, Charles H.; Rood, R. B.; Aikin, A. C.; Stolarski, R. S.; Mccormick, M. P.; Fahey, David W.

    1992-01-01

    The major gaseous components of the exhaust of stratospheric aircraft are expected to be the products of combustion (CO2 and H2O), odd nitrogen (NO, NO2 HNO3), and products indicating combustion inefficiencies (CO and total unburned hydrocarbons). The species distributions are produced by a balance of photochemical and transport processes. A necessary element in evaluating the impact of aircraft exhaust on the lower stratospheric composition is to place the aircraft emissions in perspective within the natural cycles of stratospheric species. Following are a description of mass transport in the lower stratosphere and a discussion of the natural behavior of the major gaseous components of the stratospheric aircraft exhaust.

  11. Natural Hazards Observer

    NSDL National Science Digital Library

    The Natural Hazards Center of the University of Colorado Boulder offers a free online professional hazards publication called the Natural Hazards Observer. Readers will find information on current disaster issues; new international, national, and local disaster management, mitigation, and education programs; hazards research; political and policy developments; new information sources; upcoming conferences; and recent publications. The January 2003 issue (the latest of the bimonthly publication, which dates back to 1996) includes reports with titles such as Congress Passes Inland Flood Warning Bill and Dam Safety Act Passed. Those interested can view the issues online, download and view them, and even search their content by various parameters.

  12. Natural millicharged inflation

    NASA Astrophysics Data System (ADS)

    Bai, Yang; Stefanek, Ben. A.

    2015-05-01

    We construct a natural inflation model with the inflaton as a linear combination of the fifth components of Abelian gauge fields in a five-dimensional theory. A seesaw mechanism is introduced to provide a natural millicharge for matter fields under one combination of the gauge symmetries. As a result, the effective decay constant of the inflaton field can be above the Planck scale with all scales in the model below the Planck scale. Our model predicts a tensor-to-scalar ratio r between 0.033 and 0.125 for 60 e -folds and a reheating temperature of a few 1 011 GeV .

  13. Natural environment analysis

    NASA Technical Reports Server (NTRS)

    Frost, W.

    1985-01-01

    The influence of terrain features on wind loading of the space shuttle while on the launch pad, or during early liftoff, was investigated both qualitatively and quantitatively. The climatology and meteorology producing macroscale wind patterns and characteristics for the Vandenburg Air Force Base launch site are described. Field test data are analyzed, and the nature and characteristic of flow disturbances due to the various terrain features, both natural and man-made, are reviewed. The magnitude of these wind loads are estimated. Finally, effects of turbulence are discussed. It is concluded that the influence of complex terrain can create significant wind loading on the vehicle.

  14. Syllabus Natural Resource Policy & Administration 1 Natural Resource Policy & Administration

    E-print Network

    Watson, Craig A.

    Syllabus ­ Natural Resource Policy & Administration 1 Natural Resource Policy & Administration FNR and related natural resources administration and policies in the United States; policy components; policy of the course, you should be able to: State the key provisions of major natural resource policies Explain

  15. Tackling with Natural Monopoly in Electricity and Natural Gas Industries

    Microsoft Academic Search

    Özgür Arslan; Hasan Kazdagùli

    \\u000a This chapter attempts to provide a theoretical work on natural monopoly versus perfect markets through concentrating on the\\u000a energy sector. In specific we discuss the natural monopolistic structure of Turkish natural gas and electricity markets by\\u000a comparing those of various countries in Europe. In this vein, our chapter starts with the introduction of natural monopoly\\u000a in both electricity and natural

  16. THE JOURNAL OF NATURE LE JOURNAL DE LA NATURE

    E-print Network

    Paris-Sud XI, Université de

    THE JOURNAL OF NATURE LE JOURNAL DE LA NATURE Tome 18, n°1, 2006 BOURBON SCIENCES TECHNEDIT #12;#12;THE JOURNAL OF NATURE Volume 18, n°1, 2006 LE JOURNAL DE LA NATURE Tome 18, n°1, 2006 ISSN 0985 type ZSM-5 Djamel NIBOU et Samira AMOKRANE 45 #12;The journal of Nature, 2006, volume18, n°1 3 Synthèse

  17. Natural fracture systems studies

    SciTech Connect

    Lorenz, J.C.; Warpinski, N.R.

    1992-09-01

    The objectives of this program are (1) to develop a basinal-analysis methodology for natural fracture exploration and exploitation, and (2) to determine the important characteristics of natural fracture systems for use in completion, stimulation, and production operations. Natural-fracture basinal analysis begins with studies of fractures in outcrop, core and logs in order to determine the type of fracturing and the relationship of the fractures to the lithologic environment. Of particular interest are the regional fracture systems that are pervasive in western US tight sand basins. A Methodology for applying this analysis is being developed, with the goal of providing a structure for rationally characterizing natural fracture systems basin-wide. Such basin-wide characterizations can then be expanded and supplemented locally, at sites where production may be favorable. Initial application of this analysis is to the Piceance basin where there is a wealth of data from the Multiwell Experiment (MWX), DOE cooperative wells, and other basin studies conducted by Sandia, CER Corporation, and the USGS (Lorenz and Finley, 1989, Lorenz et aI., 1989, and Spencer and Keighin, 1984). Such a basinal approach has been capable of explaining the fracture characteristics found throughout the southern part of the Piceance basin and along the Grand Hogback.

  18. Natural Language Interface

    NSDL National Science Digital Library

    Lane, David M.

    This case study, by David M. Lane of Rice University, assesses the question, "Is it easier to learn to use computer software that uses natural language commands?" Main concepts are analysis of covariance, adjusted means, and boxplots. The experimental design, descriptive statistics, inferential statistics, and raw data are all given.

  19. Dye Like A Natural

    NSDL National Science Digital Library

    Julie Yu

    2010-01-01

    In this activity, learners stain fabrics--on purpose! Learners explore the art of natural dyeing by using dyes and substrates that are both derived from plant or animal sources as well as mordant solutions. Learners compare the color and effectiveness of different mordant/dye combinations on the different substrates.

  20. The Nature of Diamonds

    NSDL National Science Digital Library

    This Web site looks at how diamonds are created (naturally and synthetically), and how they have been used throughout history. It contains information on composition and structure, the origins and history of diamonds, mining & distribution and an overview of the many uses of diamonds and how they are grown synthetically. A bibliography provides a listing of more than 75 resources for further study.

  1. ``Evolution without Natural Selection''

    Microsoft Academic Search

    Charles Dixon

    1885-01-01

    Two or three points in Mr. Romanes's letter in your issue of December 3 (p. 100), leave me no other alternative than to again ask you to insert the following few remarks. I beg to inform Mr. Romanes that with Darwinism my book has very little to do. It neither attempts to refute nor confirm the Darwinian hypothesis of Natural

  2. NATURE METHODS ADVERTISING FEATURE

    E-print Network

    Cai, Long

    material: 25 µl of a 1 mg/ml solution is usually enough.Whereas X-ray crystallography, the gold standardNATURE METHODS ADVERTISING FEATURE APPLICATION NOTES Sidec electron tomography: bridging the gap electron tomography (SET) is an innovative approach to three-dimensional (3D) protein visualization. SET

  3. Die Natur der Bacteriocine

    Microsoft Academic Search

    H. Brandis

    1975-01-01

    The bacteriocins comprise a large, heterogeneous group of bactericidal substances produced by bacteria from widely differing species. The best known bacteriocins are the colieins. Some aspects of research on colicins are discussed especially their chemical nature and mode of action, and their genetic determinants. Bacteriocine stellen eine besondere Gruppe yon antibiotisch wirkenden Substanzen dar, die yon Bakterien gebildet werden, Proteinnatur

  4. Synthesizing natural textures

    Microsoft Academic Search

    Michael Ashikhmin

    2001-01-01

    We present a simple texture synthesis algorithm that is well-suited for a specific class of naturally occurring textures. This class in- cludes quasi-repeating patterns consisting of small objects of fa- miliar but irregular size, such as flower fields, pebbles, forest un- dergrowth, bushes and tree branches. The algorithm starts from a sample image and generates a new image of arbitrary

  5. NATURAL CONVECTION INPILE LOOP

    Microsoft Academic Search

    Sparrell

    1957-01-01

    A small, natural-convection, NaK-cooled in-pile loop is described. The ; loop has a 3-in. diameter and is 7-ft long. The loop is designed for testing ; small fuel pins at highpower densities. Temperature control in the loop is ; achieved by controlling the coolant flow rate. (T.F.H.);

  6. Saving Natural Inflation

    E-print Network

    Djuna Croon; Veronica Sanz

    2015-01-12

    Slow-roll inflation requires the inflaton field to have an exceptionally flat potential, which combined with measurements of the scale of inflation demands some degree of fine-tuning. Alternatively, the flatness of the potential could be due to the inflaton's origin as a pseudo-Goldstone boson, as in Natural Inflation. Alas, consistency with Planck data places the original proposal of Natural Inflation in a tight spot, as it requires a trans-Planckian excursion of the inflaton. Although one can still tune the renormalizable potential to sub-Planckian values, higher order corrections from quantum gravity or sources of breaking of the Goldstone symmetry would ruin the predictivity of the model. In this paper we show how in more realistic models of Natural Inflation one could achieve inflation without a trans-Planckian excursion of the field. We show how a variant of Extra-natural inflation with bulk fermions can achieve the desired goal and discuss its four-dimensional duals. We also present a new type of four dimensional models inspired in Little Higgs and Composite Higgs models which can lead to sub-Planckian values of the inflaton field.

  7. Developing Literacy Naturally.

    ERIC Educational Resources Information Center

    Searfoss, Lyndon W.; Bean, Thomas W.; Gelfer, Jeffrey I.

    Young children have a natural interest and excitement about language and literacy. This book is designed to help teachers and caretakers nurture young children's literacy development in day care, preschools, kindergartens, and primary grade classrooms. The book's approach to young children's literacy development includes how to design and manage…

  8. Drawing Closer to Nature

    ERIC Educational Resources Information Center

    London, Peter

    2004-01-01

    This article discusses how drawing closer to nature, two profoundly important and powerful qualities are experienced. First, the entire world takes on a new degree of poignancy, luminosity, preciousness, subtlety, mystery, and intimacy. Second, the author points out how we increasingly experience ourselves in just the same way: poignant, luminous,…

  9. POTENTIAL NATURAL VEGETATION COVERAGE

    EPA Science Inventory

    "Potential natural vegetation is defined as the vegetation that would exist today if humans were removed from the scene and if the plant succession after their removal were telescoped into a single moment. The time compression eliminates the effects of future climatic fluc...

  10. Liquefied natural gas processing

    SciTech Connect

    Rambo, C.L.; Wilkinson, J.D.; Hudson, H.M.

    1992-05-19

    This patent describes improvement in a process for the separation of liquefied natural gas containing methane, C{sub 2} components, C{sub 3} components and heavier hydrocarbon components. The improvement comprises a distillation stream is withdrawn from an upper region of the fractionation column and thereafter divided into the more volatile fraction and a recycle stream; the recycle stream is directed in heat exchange relation with at least a portion of the liquefied natural gas whereby the compressed recycle stream is cooled sufficiently to substantially condense it, while the liquefied natural gas portion is heated; the substantially condensed compressed recycle stream is supplied to the fractionation column at a top column feed position; the heated liquefied natural gas portion is supplied to the fractionation column at a mid-column feed position; and the quantity and pressure of the compressed recycle stream and the temperatures of the feed streams to the fractionation column are effective to maintain column overhead temperature at a temperature whereby the major portion of the C{sub 2} components, C{sub 3} components and heavier hydrocarbon components is recovered in the relatively less volatile fraction.

  11. Natural and Formal Infinities.

    ERIC Educational Resources Information Center

    Tall, David

    2001-01-01

    The construction of both natural and formal infinities are products of human thought and may be considered in terms of embodied cognition. Forwards the viewpoint that formal deduction focuses as far as possible on formal logic in preference to perceptual imagery, developing a network of formal properties that do not depend on specific embodiments.…

  12. Picturing the Natural World

    ERIC Educational Resources Information Center

    Salia, Hannah

    2011-01-01

    How is the natural environment in the neighborhood representative of the larger biosphere in which people live? Studying the local birds and flora of the Pacific Northwest in the context of the local parks and ponds provided a rich opportunity for third-grade students at St. Thomas School in Medina, Washington, to explore and learn about…

  13. Natural fission reactor

    Microsoft Academic Search

    L G. A. Cowan

    1976-01-01

    The evidence supporting the establishment of the zones of a natural fission reactor that occurred about 2 billion years ago is presented. The reactor evidence was found in an open-pit uranium mine in the southeastern part of the Gabon Republic, near the Equator on the coast of West Africa. The history of the probable sequence of events leading to the

  14. Designing Nature's Way

    ERIC Educational Resources Information Center

    Fisher, Diane

    2005-01-01

    In the case of cars and other engineered objects, humans go about the design process in a very intentional way. They pretty much know what they are aiming for. The activity described in this article demonstrates how a computer can simulate biological evolution and the laws of natural selection. The article is divided into the following sections:…

  15. The Nature of Atoms.

    ERIC Educational Resources Information Center

    Holden, Alan

    This monograph was written for the purpose of presenting physics to college students who are not preparing for careers in physics. It deals with the nature of atoms, and treats the following topics: (1) the atomic hypothesis, (2) the chemical elements, (3) models of an atom, (4) a particle in a one-dimensional well, (5) a particle in a central…

  16. Potential and natural output

    Microsoft Academic Search

    Giorgio Primiceri; Alejandro Justiniano

    2009-01-01

    We estimate a DSGE model with imperfectly competitive products and labor markets, and sticky prices and wages. We use the model to back out two counterfactual objects: potential output, i.e. the level of output that would prevail under perfect competition, and natural output, i.e. the level of output that would prevail with flexible prices and wages. We find that potential

  17. Appreciation of Nature.

    ERIC Educational Resources Information Center

    Wilson, Maithel Lee, Ed.

    1992-01-01

    Presents American Indian cultural activities that encourage student awareness of nature and its beauty and the need for balance in our lives. Includes an explanation of the powers of the Medicine Wheel, a legend about the dream catcher, and instructions for seven related craft activities. (SV)

  18. Nature, Education and Things

    ERIC Educational Resources Information Center

    Rømer, Thomas Aastrup

    2013-01-01

    In this essay it is argued that the educational philosophy of John Dewey gains in depth and importance by being related to his philosophy of nature, his metaphysics. The result is that any experiental process is situated inside an event, an existence, a thing, and I try to interpret this "thing" as schools or major cultural events such…

  19. Picturing the Natural Environment

    ERIC Educational Resources Information Center

    Johnson, Phyllis Scott

    2011-01-01

    Around Scout Island Education Center, a site used by schools in Fresno County to explore the area's natural environment, a total of 200 cylinder-shaped concrete stools display tiles representing small mammals, flying insects, birds, wildflowers, and more. Twenty sets have been created by elementary, middle, and high-school art students as part of…

  20. Nature in the City.

    ERIC Educational Resources Information Center

    Melber, Leah W.

    2000-01-01

    Presents three science activities targeted to help urban students learn about nature: (1) observing coloration patterns of pigeons; (2) measuring local rainfall and comparing it to other areas; and (3) conducting a biodiversity study by observing a patch of lawn. (YDS)

  1. College of Engineering EM Engineering Mechanics

    E-print Network

    MacAdam, Keith

    College of Engineering EM Engineering Mechanics KEY: # = new course * = course changed = course or concur: MA 213. EM 302 MECHANICS OF DEFORMABLE SOLIDS. (3 of Engineering or consent of chairperson, and EM 221; prereq or concur: MA 214. EM 313 DYNAMICS. (3

  2. Dicas para cruzeiros Todos os anos, milhes de cidados americanos saem em cruzeiros de frias. Em

    E-print Network

    Dicas para cruzeiros Todos os anos, milhões de cidadãos americanos saem em cruzeiros de férias. Em 2003, aproximadamente 8,3 milhões de passageiros embarcaram em diversos portos norte-americanos em cruzeiros de férias (fonte: Cruise Lines International Association). As viagens em navios de cruzeiro expõem

  3. Investigao em clulas estaminais no Biocant deu origem a cinco patentes em dois anos

    E-print Network

    Instituto de Sistemas e Robotica

    Investigação em células estaminais no Biocant deu origem a cinco patentes em dois anos A investigação em células estaminais (do cordão umbilical) no parque tecnológico Biocant, em Cantanhede, resultou, nos últimos dois anos, em cinco patentes, duas delas já licenciadas a empresas, disse à Lusa o

  4. Natural Selection and Geology 230

    E-print Network

    Kammer, Thomas

    ;Natural Selection · The theory of natural selection was proposed by Charles Darwin in 1859, in his book;Darwin drew an analogy between artificial selection and natural selection. Here we see dog breedsNatural Selection and Evolution Geology 230 Fossils and Evolution #12;The Study of Evolution

  5. warnell school Forestry & Natural Resources

    E-print Network

    Hall, Daniel

    #12;#12;warnell school Forestry & Natural Resources 2009 Annual Report o #12;VisionTo be recognized as one of the top five forestry and natural resource programs in the United States. Mission's renewable natural resources; and to place latest ideas and technology in forestry and natural resource

  6. Nature, culture, and civil society

    Microsoft Academic Search

    Julianne Lutz Newton; William C. Sullivan

    2005-01-01

    Civil societies are related in complex ways with the nature that surrounds them. Drawing upon ecological principles, social, economic, and political theories, and empirical evidence from environmental psychology, we explore the ongoing dialectic between nature and culture—how humans alter nature and nature alters humans, their cultures and associations—with particular reference to civil society. In our view, civil society scholars overlook

  7. Natural products as photoprotection.

    PubMed

    Saewan, Nisakorn; Jimtaisong, Ampa

    2015-03-01

    The rise in solar ultraviolet radiation on the earth's surface has led to a depletion of stratospheric ozone over recent decades, thus accelerating the need to protect human skin against the harmful effects of UV radiation such as erythema, edema, hyperpigmentation, photoaging, and skin cancer. There are many different ways to protect skin against UV radiation's harmful effects. The most popular way to reduce the amount of UV radiation penetrating the skin is topical application of sunscreen products that contain UV absorbing or reflecting active molecules. Based on their protection mechanism, the active molecules in sunscreens are broadly divided into inorganic and organic agents. Inorganic sunscreens reflect and scatter UV and visible radiation, while organic sunscreens absorb UV radiation and then re-emit energy as heat or light. These synthetic molecules have limited concentration according to regulation concern. Several natural compounds with UV absorption property have been used to substitute for or to reduce the quantity of synthetic sunscreen agents. In addition to UV absorption property, most natural compounds were found to act as antioxidants, anti-inflammatory, and immunomodulatory agents, which provide further protection against the damaging effects of UV radiation exposure. Compounds derived from natural sources have gained considerable attention for use in sunscreen products and have bolstered the market trend toward natural cosmetics. This adds to the importance of there being a wide selection of active molecules in sunscreen formulations. This paper summarizes a number of natural products derived from propolis, plants, algae, and lichens that have shown potential photoprotection properties against UV radiation exposure-induced skin damage. PMID:25582033

  8. Anlise do desmatamento em 2009, em especial em municpios e reas

    E-print Network

    em Outros Usos - 2.000 4.000 6.000 8.000 10.000 12.000 14.000 16.000 18.000 20.000 2001 2002 2003 desmatamento em Glebas - 2.000 4.000 6.000 8.000 10.000 12.000 14.000 16.000 18.000 20.000 2001 2002 2003 2004 2005 2006 2007 2008 2009 Histórico do desmatamento em Assentamentos - 2.000 4.000 6.000 8.000 10.000 12.000

  9. Natural Gas Imports and Exports

    EIA Publications

    2015-01-01

    In 2014, net imports of natural gas in the United States fell to 1,187 billion cubic feet as a result of lower natural gas imports from Canada. On a regional basis, natural gas net imports changed most significantly in the Northeast, North Central, and South regions. Net changes in natural gas imports in other regions were less significant in 2014. These trends are discussed in the U.S. Natural Gas Imports and Exports 2014 report.

  10. Natural light illumination system.

    PubMed

    Whang, Allen Jong-Woei; Chen, Yi-Yung; Yang, Shu-Hua; Pan, Po-Hsuan; Chou, Kao-Hsu; Lee, Yu-Chi; Lee, Zong-Yi; Chen, Chi-An; Chen, Cheng-Nan

    2010-12-10

    In recent years, green energy has undergone a lot of development and has been the subject of many applications. Many research studies have focused on illumination with sunlight as a means of saving energy and creating healthy lighting. Natural light illumination systems have collecting, transmitting, and lighting elements. Today, most daylight collectors use dynamic concentrators; these include Sun tracking systems. However, this design is too expensive to be cost effective. To create a low-cost collector that can be easily installed on a large building, we have designed a static concentrator, which is prismatic and cascadable, to collect sunlight for indoor illumination. The transmission component uses a large number of optical fibers. Because optical fibers are expensive, this means that most of the cost for the system will be related to transmission. In this paper, we also use a prismatic structure to design an optical coupler for coupling n to 1. With the n-to-1 coupler, the number of optical fibers necessary can be greatly reduced. Although this new natural light illumination system can effectively guide collected sunlight and send it to the basement or to other indoor places for healthy lighting, previously there has been no way to manage the collected sunlight when lighting was not desired. To solve this problem, we have designed an optical switch and a beam splitter to control and separate the transmitted light. When replacing traditional sources, the lighting should have similar characteristics, such as intensity distribution and geometric parameters, to those of traditional artificial sources. We have designed, simulated, and optimized an illumination lightpipe with a dot pattern to redistribute the collected sunlight from the natural light illumination system such that it equals the qualities of a traditional lighting system. We also provide an active lighting module that provides lighting from the natural light illumination system or LED auxiliary sources, depending on circumstances. The system is controlled by a light detector. We used optical simulation tools to design and simulate the efficiency of the active module. Finally, we used the natural light illumination system to provide natural illumination for a traffic tunnel. This system will provide a great number of benefits for the people who use it. PMID:21151237

  11. Magnetic Properties of the Basalt in Hole EM 7, Mohole Project

    Microsoft Academic Search

    Allan Cox; Richard R. Doell

    1962-01-01

    The average direction of the remanent magnetization of the basalt layer at the bottom of hole EM 7 is inclined 36 ø above tile horizontal, indicating that the layer is reversely magnetized. Detailed demagnetization experiments with alternating magnetic fields to 800 oer- steds peak intensity indicate that the drilling operations did not remagnetize the basalts. The natural magnetization is extremely

  12. Clathrate hydrates in nature.

    PubMed

    Hester, Keith C; Brewer, Peter G

    2009-01-01

    Scientific knowledge of natural clathrate hydrates has grown enormously over the past decade, with spectacular new findings of large exposures of complex hydrates on the sea floor, the development of new tools for examining the solid phase in situ, significant progress in modeling natural hydrate systems, and the discovery of exotic hydrates associated with sea floor venting of liquid CO2. Major unresolved questions remain about the role of hydrates in response to climate change today, and correlations between the hydrate reservoir of Earth and the stable isotopic evidence of massive hydrate dissociation in the geologic past. The examination of hydrates as a possible energy resource is proceeding apace for the subpermafrost accumulations in the Arctic, but serious questions remain about the viability of marine hydrates as an economic resource. New and energetic explorations by nations such as India and China are quickly uncovering large hydrate findings on their continental shelves. PMID:21141039

  13. Nature Outlook: Malaria

    NSDL National Science Digital Library

    The journal Nature provides a range of peer-reviewed scientific works on a weekly basis, along with science updates and materials aimed at the general public. This particular feature on malaria is available at no charge to the curious public, and as the homepage asks, "What will it take to finally subdue this deadly disease?" Visitors will find a collection of recent articles in the Outlook area, such as "The Numbers Game" and "Vaccines: The Take Home Lesson." Moving on, the Collection area brings together peer-reviewed pieces on the story behind the efforts to eradicate the disease, along with some nice pieces about how the disease is transmitted. It's easy to see how this collection could be used in a public health course, or in another classroom setting. Finally, the site also includes links to popular articles from Nature, along with other open access materials.

  14. PBS Science and Nature

    NSDL National Science Digital Library

    Information on programs and related content for Public Broadcasting Service (PBS) television shows on science and nature, including "Nature," "Nova," "I, Cringely," and "Scientific American Frontiers." The site's home page features a listing of individual program episodes arranged by topic (archaeology and anthropology, earth and habitat, physics, technology and inventions, creatures, health and medicine, and space). There is also a listing of featured sites, programming schedules, and links to interactive features (quizzes, games, polls, and others). The PBS teachers' page provides access to lesson plans, interactives, and other resources based on PBS science programming. There are also links to materials for younger students, such as the "Dragonfly TV" site, with games, activities, podcasts, and other items, and hands-on activities from the program "ZOOMsci" which students can perform themselves.

  15. Notes on natural inflation

    NASA Astrophysics Data System (ADS)

    Yonekura, Kazuya

    2014-10-01

    In the so-called natural inflation, an axion-like inflaton is assumed to have a cosine-type periodic potential. This is not the case in a very simple model in which the axion-like inflaton is coupled to an SU(N) (or other) pure Yang-Mills, at least in the large N limit as pointed out by Witten. It has a multi-valued potential, which is effectively quadratic, i.e., there is only a mass term in the large N limit. Thanks to this property, chaotic inflation can be realized more naturally with the decay constant of the axion-like inflaton less than the Planck scale. We demonstrate these points explicitly by using softly broken Script N=1 Super-Yang-Mills which allows us to treat finite N. This analysis also suggests that moderately large gauge groups such as E8 are good enough with a Planck scale decay constant.

  16. Natural Products for Antithrombosis

    PubMed Central

    Chen, Cen; Zhang, Qian; Wang, Feng-Qin; Hu, Yuan-Jia; Xia, Zhi-Ning

    2015-01-01

    Thrombosis is considered to be closely related to several diseases such as atherosclerosis, ischemic heart disease and stroke, as well as rheumatoid arthritis, hyperuricemia, and various inflammatory conditions. More and more studies have been focused on understanding the mechanism of molecular and cellular basis of thrombus formation as well as preventing thrombosis for the treatment of thrombotic diseases. In reality, there is considerable interest in the role of natural products and their bioactive components in the prevention and treatment of thrombosis related disorders. This paper briefly describes the mechanisms of thrombus formation on three aspects, including coagulation system, platelet activation, and aggregation, and change of blood flow conditions. Furthermore, the natural products for antithrombosis by anticoagulation, antiplatelet aggregation, and fibrinolysis were summarized, respectively. PMID:26075003

  17. Natural Dark Energy

    E-print Network

    Douglas Scott; Ali Frolop

    2007-03-30

    It is now well accepted that both Dark Matter and Dark Energy are required in any successful cosmological model. Although there is ample evidence that both Dark components are necessary, the conventional theories make no prediction for the contributions from each of them. Moreover, there is usually no intrinsic relationship between the two components, and no understanding of the nature of the mysteries of the Dark Sector. Here we suggest that if the Dark Side is so seductive then we should not be restricted to just 2 components. We further suggest that the most natural model has 5 distinct forms of Dark Energy in addition to the usual Dark Matter, each contributing precisely equally to the cosmic energy density budget.

  18. eNature.com

    NSDL National Science Digital Library

    eNature.com provides a series of field guides with photos and information on thousands of plants, animals, and insects in the United States. These guides employ the same dataset used to create the printed Audubon Field Guides, which has been reviewed by experts in biology, zoology, and natural history. The guides are arranged by type of organism: amphibians, birds, spiders, trees, wildflowers, and others. Each one is further subdivided (salamanders, frogs and toads, turtles, and so forth) and is searchable by keyword. Users may also create species lists for their own localities by entering a ZIP code. Other materials include guides to threatened and endangered species, guides to national parks and wildlife refuges, an ask-an-expert feature, selected images for eCards and screen savers, and plant and animal pop-up cards that users can place on their own sites.

  19. Mysteries of nature.

    PubMed

    Molnar, Michael

    2011-01-01

    This article examines a group photograph of the Psychiatry and Neurology section of the 66th Meeting of the Society of German Natural Scientists and Doctors in Vienna, 24-30 September 1894 which Sigmund Freud attended. The society's origins in Naturphilosophie are indicated and a number of the participants are identified on the photo. They and the events at the conference are related to Sigmund Freud's work at the time and to his gradual abandonment of anatomy and of heredity and degeneration as significant aetiological factors in the neuroses. Philosophical problems, such as how phenomena should be described and how 'nature' is conceptualized, are also considered in the light of their implications for Freud's life and thought at that period. PMID:21473176

  20. Naturalness in emergent spacetime

    E-print Network

    Stefano Liberati; Matt Visser; Silke Weinfurtner

    2006-03-17

    Effective field theories (EFTs) have been widely used as a framework in order to place constraints on the Planck suppressed Lorentz violations predicted by various models of quantum gravity. There are however technical problems in the EFT framework when it comes to ensuring that small Lorentz violations remain small -- this is the essence of the "naturalness" problem. Herein we present an "emergent" space-time model, based on the "analogue gravity'' programme, by investigating a specific condensed-matter system that is in principle capable of simulating the salient features of an EFT framework with Lorentz violations. Specifically, we consider the class of two-component BECs subject to laser-induced transitions between the components, and we show that this model is an example for Lorentz invariance violation due to ultraviolet physics. Furthermore our model explicitly avoids the "naturalness problem", and makes specific suggestions regarding how to construct a physically reasonable quantum gravity phenomenology.

  1. Epidemics after Natural Disasters

    PubMed Central

    Gayer, Michelle; Connolly, Maire A.

    2007-01-01

    The relationship between natural disasters and communicable diseases is frequently misconstrued. The risk for outbreaks is often presumed to be very high in the chaos that follows natural disasters, a fear likely derived from a perceived association between dead bodies and epidemics. However, the risk factors for outbreaks after disasters are associated primarily with population displacement. The availability of safe water and sanitation facilities, the degree of crowding, the underlying health status of the population, and the availability of healthcare services all interact within the context of the local disease ecology to influence the risk for communicable diseases and death in the affected population. We outline the risk factors for outbreaks after a disaster, review the communicable diseases likely to be important, and establish priorities to address communicable diseases in disaster settings. PMID:17370508

  2. Zion Natural History Association

    NSDL National Science Digital Library

    The Zion Natural History Association (ZNHA) is a non-profit organization established in 1931 to support education, research, publication and other programs for the benefit of Zion National Park, Cedar Breaks National Monument, and Pipe Spring National Monument. Visitors to this site can acess information about the scientific, educational, historical, and interpretive activities of the Association and its sister organization, the Zion Canyon Field Institute.

  3. eNature.com

    NSDL National Science Digital Library

    0000-00-00

    A website devoted to online photographic nature guides including guides to select butterflies, spiders, insects, and many other groups of organisms. Care is given to proper classification. Each species page has a comprehensive description including range, flight, and habitat associations. Links to games, screen savers, and ringtones are also included. The links to photographs of species are good, however the site is not comprehensive. For example, only 36 kinds of beetle are presented.

  4. Thermoacoustic natural gas liquefier

    SciTech Connect

    Swift, G.W. [Los Alamos National Lab., NM (United States). Condensed Matter and Thermal Physics Group

    1997-05-01

    Cryenco and Los Alamos are collaborating to develop a natural-gas-powered natural-gas liquefier that will have no moving parts and require no electrical power. It will have useful efficiency, remarkable reliability, and low cost. The liquefaction of natural gas, which occurs at only 115 Kelvin at atmospheric pressure, has previously required rather sophisticated refrigeration machinery. The 1990 invention of the thermoacoustically driven orifice pulse-tube refrigerator (TA-DOPTR) provides cryogenic refrigeration with no moving parts for the first time. In short, this invention uses acoustic phenomena to produce refrigeration from heat. The required apparatus consists of nothing more than helium-filled heat exchangers and pipes, made of common materials, without exacting tolerances. In the Cryenco-Los Alamos collaboration, the authors are developing a version of this invention suitable for use in the natural-gas industry. The project is known as acoustic liquefier for short. The present program plans call for a two-phase development. Phase 1, with capacity of 500 gallon per day (i.e., approximately 40,000 scfd, requiring a refrigeration power of about 7 kW), is large enough to illuminate all the issues of large-scale acoustic liquefaction without undue cost, and to demonstrate the liquefaction of 60--70% of input gas, while burning 30--40%. Phase 2 will target versions of approximately 10{sup 6} scfd = 10,000 gallon per day capacity. In parallel with both, they continue fundamental research on the technology, directed toward increased efficiency, to build scientific foundations and a patent portfolio for future acoustic liquefiers.

  5. A Natural Integration

    NSDL National Science Digital Library

    Heidi Trudel

    2007-04-01

    A five-week study taught students how to write a field guide that identified the plants in a small wooded area they passed through on their way to their school playground. By creating this authentic genre of science writing, students came to understand and care for the natural world in their immediate environment. They also developed important science, reading, and writing skills through purposeful work.

  6. Natural Resource Ecology Laboratory

    NSDL National Science Digital Library

    The Natural Resource Ecology Laboratory (NREL) at Colorado State University conducts multi-disciplinary research in ecosystem science, with the purpose of improving knowledge of "the complex interactions between humans, management activities, and ecosystems." The recently launched homepage, which is still under construction, includes background information on NREL; descriptions of research projects (a substantial and diverse list); publications, reports, and data; teaching and outreach; and contact information.

  7. Nature by Numbers

    NSDL National Science Digital Library

    This 4-minute computer animation highlights three forms in nature that have connections with numbers and geometry. The Fibonacci sequence and the golden ratio are shown relating to the chambered nautilus shell and the sunflower seed pattern. The Delaunay triangulation and Voronoi tessellation are shown to simulate the capillary distribution on a dragonfly wing. Included are descriptions of the mathematics and stills from the production.

  8. Introduction to Natural Selection

    NSDL National Science Digital Library

    Science Netlinks

    2002-03-28

    This lesson is an introduction to natural selection and is suited to any student who is just beginning his or her discovery of evolution. The motivation introduces a species of bird that became (over millions of years) numerous species, through adaptation. The development is a hands-on activity that demonstrates how populations change little by little, generation by generation, due to survival of species that have traits that are beneficial in an environment.

  9. Reviewed Work: Modeling Nature

    E-print Network

    Pierotti, Raymond

    1986-11-01

    Shore Dr., Chicago, IL 60605. Modeling nature.-Sharon E. Kingsland. 1985. Univ. of Chicago Press, Chicago. 267 p. The use of mathematics as a tool in attempting to de- scribe biological processes has a long and stormy history. Perhaps nowhere has... this procedure ngendered more con- troversy than in the field of population biology. What is perhaps most interesting (some might regard it as amusing) about the repeated controversies over the use of mathe- matical models in population biology is that almost...

  10. Peruvian natural dye plants

    Microsoft Academic Search

    Kay K. Antúnez de Mayolo

    1989-01-01

    The use of natural dyes to color textiles and other objects has a long history in Andean South America, but has for the most\\u000a part become a lost technology with the introduction of synthetic dyes. A literature and field survey to recover information\\u000a about the traditional use of dye plants in Peru, from pre-Hispanic to recent times, was accompanied by

  11. Nature's Greatest Puzzles

    SciTech Connect

    Quigg, Chris; /Fermilab

    2005-02-01

    It is a pleasure to be part of the SLAC Summer Institute again, not simply because it is one of the great traditions in our field, but because this is a moment of great promise for particle physics. I look forward to exploring many opportunities with you over the course of our two weeks together. My first task in talking about Nature's Greatest Puzzles, the title of this year's Summer Institute, is to deconstruct the premise a little bit.

  12. Nature and Man

    Microsoft Academic Search

    Michael C. Jensen; William H. Meckling

    1905-01-01

    Understanding human behavior is fundamental to understanding how organizations function, whether they are profit-making firms, non-profit enterprises, or government agencies. Much disagreement among managers, scientists, policy makers, and citizens arises from substantial differences in the way we think about human nature—about their strengths, frailties, intelligence, ignorance, honesty, selfishness, and generosity. In this paper we discuss five alternative models of human

  13. Outdoors and Nature Calendar

    NSDL National Science Digital Library

    2012-06-26

    This website contains links to 12 calendars (12 months). Each month contains several simple math-related activities that can be easily integrated into a learner's day. For example, the May calendar shows seven activities that mix math with outdoors and nature. Learners make a leaf pattern, measure the longest shadow they can find, and count how many seeds an apple has. Works as a handout, take-home, or group activity. Also available in Spanish.

  14. Eternal recurrence and nature

    E-print Network

    Mask, Kyle Evan

    2008-10-10

    through the exercise of free will. On the face of things, Nietzsche?s doctrine of eternal recurrence creates a problem for such an interpretation. If history must eternally repeat itself, then it can take only one possible route. Individuals? future... will. Turning to Nietzsche?s late works, I show that Nietzsche broadens the scope of eternal recurrence. Eternal recurrence comes to serve as a metaphor for the Dionysian character of Nature. Only by relinquishing one?s desire for free...

  15. Scitable by Nature Education

    NSDL National Science Digital Library

    A free science library and personal learning tool brought to you by Nature Publishing Group, the world's leading publisher of science. Scitable currently concentrates on genetics, the study of evolution, variation, and the rich complexity of living organisms. As you cultivate your understanding of modern genetics on Scitable, you will explore not only what we know about genetics and the ways it impacts our society, but also the data and evidence that supports our knowledge.

  16. In defense of naturalism

    Microsoft Academic Search

    Gregory W. Dawes

    History and the modern sciences are characterized by what is sometimes called a “methodological naturalism” that disregards\\u000a talk of divine agency. Some religious thinkers argue that this reflects a dogmatic materialism: a non-negotiable and a priori commitment to a materialist metaphysics. In response to this charge, I make a sharp distinction between procedural requirements and metaphysical commitments. The procedural requirement

  17. Natural History of Hawaii

    NSDL National Science Digital Library

    Sohmer, Rachel.

    2002-01-01

    The first Web site (1) is a ThinkQuest entry designed by students from Kapolei Elementary School. Although it's geared toward kids, it offers a great overview of the natural history of Hawaii that should benefit anyone not already familiar with the islands. The next Web site (2), from the Hawaiian Ecosystems at Risk Project, outlines the alien species situation in Hawaii and presents a 10-point action plan for combating this problem. The National Wildlife Health Center of the US Geological Survey describes the projects of the Hawaii Field Station in this straightforward Web site (3). Visitors can take a virtual tour of Oahu's Lyon Arboretum and learn about some of Hawaii's unique flora along the way (4). The Hawaii Natural Area Reserves System Web site (5) contains general descriptions and photos of nature reserves on Kauai, Oahu, Molokai, Maui, and the Big Island. Visitors to the next site (6) can browse a gallery of colorful Hawaiian-themed prints created by naturalist painter N. Robert Wagstaff. Terra Galleria Photography offers another collection of beautiful images, this time of Haleakala National Park. Images from this Web site (7) include photos of the highly endangered silversword plant. The final Web site is an article from ScienceDaily Magazine about some of the efforts to save this rare plant, which serves as a symbol of Hawaii's ecological plight (8).

  18. Antimicrobial Activity of Pomegranate and Green Tea Extract on <em>Propionibacterium Acnes, Propionibacterium Granulosum, Staphylococcus Aureusem> and <em>Staphylococcus Epidermidisem>.

    PubMed

    Li, Zhaoping; Summanen, Paula H; Downes, Julia; Corbett, Karen; Komoriya, Tomoe; Henning, Susanne M; Kim, Jenny; Finegold, Sydney M

    2015-06-01

    We used pomegranate extract (POMx), pomegranate juice (POM juice) and green tea extract (GT) to establish in vitro activities against bacteria implicated in the pathogenesis of acne. Minimum inhibitory concentrations (MIC) of 94 <em>Propionibacterium acnes, Propionibacterium granulosum, Staphylococcus aureus,em> and <em>Staphylococcus epidermidisem> strains were determined by Clinical and Laboratory Standards Institute-approved agar dilution technique. Total phenolics content of the phytochemicals was determined using the Folin-Ciocalteu method and the polyphenol composition by HPLC. Bacteria were identified by 16S rRNA sequence analysis. GT MIC of 400 ?g/ml or less was obtained for 98% of the strains tested. 64% of <em>P. acnesem> strains had POMx MICs at 50 ?g/ml whereas 36% had MIC >400 ?g/ml. POMx, POM juice, and GT showed inhibitory activity against all the <em>P. granulosumem> strains at ?100 ?g/ml. POMx and GT inhibited all the <em>S. aureusem> strains at 400 ?g/ml or below, and POM juice had an MIC of 200 ?g/ml against 17 <em>S. aureusem> strains. POMx inhibited <em>S. epidermidisem> strains at 25 ?g/ml, whereas POM juice MICs were ?200 ?g/ml. The antibacterial properties of POMx and GT on the most common bacteria associated with the development and progression of acne suggest that these extracts may offer a better preventative/therapeutic regimen with fewer side effects than those currently available.

    <em>J Drugs Dermatolem>. 2015;14(6):574-578. PMID:26091382

  19. Discussions about the Nature of Science in a Course on the History of Astronomy. (Spanish Title: Discusiones sobre la Naturaleza de la Ciencia en un Curso sobre Historia de la Astronomía.) Discussões sobre a Natureza da Ciência em um Curso sobre a História da Astronomia

    NASA Astrophysics Data System (ADS)

    Pires de Andrade, Victória Flório; L'Astorina, Bruno

    2010-07-01

    There are an increasing number of researches in science education that affirm the importance of discussions on the "nature of science" in basic education level as well as in teacher training. The history of science applied to education is a way to contextualize epistemological discussions, allowing both the understanding of scientific content and learning about science concepts. We present some reasonably consensual definitions on the nature of science that have been widely discussed by the academic community. We show also some episodes in the history of astronomy which can lead to discussions involving some aspects of the nature of science, and how they can do it. Hay un número creciente de investigaciones en la enseñanza de las ciencias que afirman la importancia de debates sobre la "naturaleza de la ciencia" en la educación básica y formación del profesorado. La historia de la ciencia aplicada a la educación es una manera de contextualizar los debates de la epistemología, lo que permite tanto la comprensión de los contenidos científicos como el aprendizaje de conceptos científicos. En esto trabajo, presentamos algunas definiciones bastante consensuales sobre la naturaleza de la ciencia que han sido ampliamente discutidas por la comunidad académica y mostramos cómo algunos episodios en la historia de la astronomía pueden llevar a discusiones sobre algunos aspectos de la naturaleza de la ciencia. Há um número crescente de pesquisas na área de ensino de ciências que afirmam a importância de discussões sobre a "natureza da ciência" na educação básica e na formação de professores. A história da ciência aplicada ao ensino é uma maneira de contextualizar discussões epistemológicas, permitindo tanto a compreensão de conteúdos científicos quanto o aprendizado de noções sobre as ciências. Neste trabalho apresentamos algumas definições razoavelmente consensuais sobre a natureza da ciência que foram amplamente discutidas pela comunidade acadêmica e mostramos como alguns episódios da história da astronomia podem levar a discussões envolvendo alguns dos aspectos da natureza da ciência.

  20. Integrated Crop\\/Livestock Production Systems for Kyusei Nature Farming in Brazil

    Microsoft Academic Search

    T. Kinjo; S. K. Homma; S. Kinjo; A. B. Sanches; A. B. da Silva; R. B. da Silva; W. M. P. Silva; J. L. Perez; K. S. S. Perez

    This paper reports on the development of an integrated system of crop and livestock production in Brazil based on Kyusei Nature Farming. Experiments began in 1984 in which animal feeds and Effective Microorganisms (EM) were major inputs. Some important features of this uniquely integrated system include a) use of animal manures for crop production instead of chemical fertilizers, b) use

  1. Artificial nature : water infrastructure and its experience as natural space

    E-print Network

    Demirta?, Fatma Asl?han, 1970-

    2000-01-01

    This work is about water infrastructure and its experience as urban and natural space. It deals with the concepts of nature/geography, technology, and the integral experiential space by analyzing water dams and reservoirs ...

  2. [Natural philosophy in medieval medicine].

    PubMed

    Riha, Ortrun

    2007-01-01

    Medieval medicine is not much interested in natural philosophy. Nevertheless, it is based upon clear methodological and epistemological principles, where the word 'nature' is used in several ways. The natural 'virtues' of things--including magical ones--are most important for therapy. Human health is influenced by stars (planets, zodiac) and seasons, and the physician has to take into account such cosmic effects. The chances of healing depend on the patients' 'nature' in relation to the power of illness. A strong nature makes medicine superfluous, an overwhelming disease cannot be beaten. Thus, medicine is limited to 'neutral' situations when supporting the patient makes his 'nature' win. PMID:18447188

  3. Natural gas monthly, April 1999

    SciTech Connect

    NONE

    1999-05-06

    The Natural Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information. There are two feature articles in this issue: Natural gas 1998: Issues and trends, Executive summary; and Special report: Natural gas 1998: A preliminary summary. 6 figs., 28 tabs.

  4. Nature of Light

    NSDL National Science Digital Library

    National Science Teachers Association (NSTA)

    2009-05-01

    Overview: The Nature of Light SciPack explains the concept of light as electromagnetic radiation and as waves. It covers the electromagnetic spectrum and the effects of wavelength on the interaction of light with different materials, including some examples of phenomena that can be explained by differences in wavelength. It also covers electromagnetic waves as a form of energy. It does not address the ray model of light or optics. In addition to comprehensive inquiry-based learning materials tied to Science Education Standards and Benchmarks, the SciPack includes the following additional components: Pedagogical Implications section addressing common misconceptions, teaching resources and strand maps linking grade band appropriate content to standards. Access to one-on-one support via e-mail to content "Wizards". Final Assessment which can be used to certify mastery of the concepts. Learning Outcomes: Nature of Light: Characteristics of Light Trace a light ray as it hits a smooth reflecting surface, or, choose the correct path among given options. Predict the path of a light ray as it passes through a series of transparent materials (given the index of refraction of each material). Describe the behavior of light waves as they are diffract (or bend) around corners. Recognize examples of phenomena in your environment that are caused by the diffraction or interference of waves (the fact that you can hear someone around a corner, the behavior of water waves, light through diffraction grating). Nature of Light: Light As Waves Provide examples of energy transfer by light (such as tanning, light warming a surface, solar cells, etc.) Describe the characteristics of transverse waves and explain how waves transfer energy from place to place. Describe the relationship between the wavelength and frequency of light waves. Explain how electromagnetic waves are produced either in nature or by humans. Identify the various parts of the electromagnetic spectrum, and place them in order of increasing or decreasing wavelength. Determine the behavior of two light waves that interfere with one another. Nature of Light: Light and Color Describe the relationship of color as perceived by the human eye and the wavelength of light waves. Describe the relationship of the colors in the visible spectrum (as perceived by the human eye) to the electromagnetic spectrum. Describe how the color of a beam of light is affected by scattering. Summarize the interaction of the molecules of greenhouse gases and different wavelengths of light, and how that results in heat being trapped in the troposphere. Nature of Light: So, What Is Light? Describe the circumstances (experiments, real world situations) in which the behavior of light is best described as a wave or a particle. Describe the relationship between the frequency of a photon and its energy. Explain how a unique series of spectral lines are formed for an element (an atom or a group of free atoms of that element). Describe how spectra can be used to identify substances.

  5. On the nature of black hole information from unitarity

    E-print Network

    van Putten, Maurice H P M

    2015-01-01

    We identify the astronomically long evaporative lifetimes $t_{ev}$ of macroscopic black holes with unitary evolution in photon emissions one-by-one. To study the nature of black hole information, we consider observers ${\\cal O}$ of mass-energy $E$, experiencing discrete transitions in space-time with each photon emission. From the associated jumps in their velocity four-vector, we derive an integral of motion $EM$, where $M=M(t)$ denotes the mass of the black hole. $I=4\\pi EM$ was recently identified with the information localizing $E$ at the center of a sphere of radius $2M$. We here identify $I$ as a new conserved quantity underlying the no-hair theorem during black hole evaporation.

  6. Marine natural products.

    PubMed

    Blunt, John W; Copp, Brent R; Keyzers, Robert A; Munro, Murray H G; Prinsep, Michèle R

    2014-01-17

    This review covers the literature published in 2012 for marine natural products, with 1035 citations (673 for the period January to December 2012) referring to compounds isolated from marine microorganisms and phytoplankton, green, brown and red algae, sponges, cnidarians, bryozoans, molluscs, tunicates, echinoderms, mangroves and other intertidal plants and microorganisms. The emphasis is on new compounds (1241 for 2012), together with the relevant biological activities, source organisms and country of origin. Biosynthetic studies, first syntheses, and syntheses that lead to the revision of structures or stereochemistries, have been included. PMID:24389707

  7. The Nature of Salt

    NSDL National Science Digital Library

    This is a hands-on lab activity about the composition of salt. Learners will explain the general relationship between an element's Periodic Table Group Number and its tendency to gain or lose electron(s), and explain the difference between molecular compounds and ionic compounds. They will then use household materials to build a model to demonstrate sodium chloride's cubic form and describe the nature of the electrostatic attraction that holds the structure of salt together. Background information, common preconceptions, a glossary and more is included. This activity is part of the Aquarius Hands-on Laboratory Activities.

  8. "Naturally occurring asbestos

    NASA Astrophysics Data System (ADS)

    Cagnard, F.; Lahondère, D.; Blein, O.; Lahfid, A.; Wille, G.

    2012-04-01

    The term asbestos refers to six silicate minerals from amphibole and serpentine groups. By definition, it consists in bundles of thin and flexible long fibers, with high-tensile strength, and chemical and heat resistance. In contrast to asbestos found within commercial products and mining, the specific term ''naturally occurring asbestos'' (NOA) refers to asbestiform minerals occurring within rocks or soils that can be released by human activities or weathering processes. The fact that the exposure to asbestos is related to lung pathologies is now widely demonstrated (e.g. asbestosis, mesothelioma and lung cancer). However, if health risks associated with exposure to NOA exist, they are not yet well documented. The crystallization of natural asbestos occurs in specific Mg-rich lithologies associated with peculiar structural and metamorphic conditions. By recognizing and combining such specific geologic criteria, the presence or the absence of asbestos in bedrock terrains can be reasonably predicted and maps of NOA hazard can be drawn. We present here new results of geological mapping and petrological study concerning the evaluation of the NOA hazard in the Alps and Corsica, in France. The three folds approach consists in (1) a determination of lithologies with potential NOA from a bibliographic compilation and extraction of target zones from a geological geodatabase (2) a geological mapping of the target zones followed by a petrological characterization of sampled asbestiform minerals in the laboratory (optical microscopy, TEM, SEM, and Raman spectroscopy technics), and (3) the drawing of the final map of NOA hazard, at regional-scale. Occurrence criteria can be retained as follows: 1. NOA are abundant in the internal zones of the Alps and Corsica, especially within ophiolitic complexes. Natural asbestos are mostly concentrated within ultramafic rocks but can also occur within basic lithologies such as Mg-metagabbros, metabasalts and meta-pillow-lavas, 2. Asbestos is commonly located within fractures, shear-bands or shear-planes, developed during late retrograde metamorphic history, 3. Tremolite-actinolite-type asbestos is abundant both in ultramafic and mafic rocks, 4. Natural asbestos occur in few places within the external zones of the Alps, especially within hercynian ophiolitic massifs or concentrated in late Alpine fractures affecting leptyno-amphibolic lithologies.

  9. Marine natural products.

    PubMed

    Blunt, John W; Copp, Brent R; Keyzers, Robert A; Munro, Murray H G; Prinsep, Michèle R

    2013-02-01

    This review covers the literature published in 2011 for marine natural products, with 870 citations (558 for the period January to December 2011) referring to compounds isolated from marine microorganisms and phytoplankton, green, brown and red algae, sponges, cnidarians, bryozoans, molluscs, tunicates, echinoderms, mangroves and other intertidal plants and microorganisms. The emphasis is on new compounds (1152 for 2011), together with the relevant biological activities, source organisms and country of origin. Biosynthetic studies, first syntheses, and syntheses that lead to the revision of structures or stereochemistries, have been included. PMID:23263727

  10. Marine natural products.

    PubMed

    Blunt, John W; Copp, Brent R; Keyzers, Robert A; Munro, Murray H G; Prinsep, Michèle R

    2012-02-01

    Covering: 2010. Previous review: Nat. Prod. Rep., 2011, 28, 196. This review covers the literature published in 2010 for marine natural products, with 895 citations (590 for the period January to December 2010) referring to compounds isolated from marine microorganisms and phytoplankton, green, brown and red algae, sponges, cnidarians, bryozoans, molluscs, tunicates, echinoderms, mangroves and other intertidal plants and microorganisms. The emphasis is on new compounds (1003 for 2010), together with the relevant biological activities, source organisms and country of origin. Biosynthetic studies, first syntheses, and syntheses that lead to the revision of structures or stereochemistries, have been included. PMID:22193773

  11. Nature: Extraordinary Birds

    NSDL National Science Digital Library

    This Web site is the online companion to Extraordinary Birds, a recent documentary from PBS's Nature. "From Kundha Kulam's vibrant monsoon marshes to the rugged American Rockies," Extraordinary Birds explores the "intimate links that people have forged with birds." This is a great site to visit whether you've seen the program or not. Users will find video clips, an interview with the editor of American Falconry magazine, a short quiz, and other engaging features. The Web site also provides links and other resources for further exploring this fascinating subject. This site is also reviewed in the September 5, 2003 NSDL Life Sciences Report.

  12. Natural Selection Simulation

    NSDL National Science Digital Library

    2012-05-29

    This classroom activity introduces the concept of natural selection and how it relates to evolution. Students will use a variety of utensils including clothespins, tweezers and spoons to mimic animals with differently shaped mouths. The class will go through several trials, picking up at least twenty beans in one minute with their assigned utensil. If they fail to do so, their creature has died, demonstrating what happens to animals that cannot compete in the wild. Several discussion questions are included along with the activity.

  13. Project: Natural Setting Therapeutic Management

    E-print Network

    Garfunkel, Eric

    Project: Natural Setting Therapeutic Management Graduate School of Applied and Professional Psychology Doctoral Internship Project: Natural Setting Therapeutic Management (NSTM) is a behavioral to parents of individuals with developmental disabilities for over 30 years. In the schools, NSTM consultants

  14. Nature Publishing Group Site Licenses

    E-print Network

    Cai, Long

    Genetics Eye Gene Therapy Genes & Immunity Heredity Hypertension Research Immunology & Cell Biology Psychiatry Molecular Systems Biology Molecular Therapy Mucosal Immunology Nature Nature archive: 1869 (British Dental Journal) BJC (British Journal of Cancer) Bone Marrow Transplantation Cancer Gene Therapy

  15. Aesthetic perception, nature and experience 

    E-print Network

    Hall, Nicole Annette

    2014-07-01

    This thesis is about the perceptual nature of aesthetic experience and the importance of nature as a paradigmatic object of aesthetic perception and aesthetic experience more broadly conceived. For this reason, it merits ...

  16. Flavor mediation delivers natural SUSY

    E-print Network

    Craig, Nathaniel

    If supersymmetry (SUSY) solves the hierarchy problem, then naturalness considerations coupled with recent LHC bounds require non-trivial superpartner flavor structures. Such “Natural SUSY” models exhibit a large mass ...

  17. Natural gas monthly, December 1995

    SciTech Connect

    NONE

    1995-12-01

    This report presents information of interest to organizations associated with the natural gas industry. Data are presented on natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also included.

  18. Natural Cycles: Coming Full Circle.

    ERIC Educational Resources Information Center

    Pliske, Charlotte

    2000-01-01

    Combines the Native American medicine wheel with an elementary grade activity to teach different natural cycles. Lists necessary materials and Native American and natural cycle books for children. (Contains 13 references.) (YDS)

  19. Natural Gas Exports from Iran

    EIA Publications

    2012-01-01

    This assessment of the natural gas sector in Iran, with a focus on Iran’s natural gas exports, was prepared pursuant to section 505 (a) of the Iran Threat Reduction and Syria Human Rights Act of 2012 (Public Law No: 112-158). As requested, it includes: (1) an assessment of exports of natural gas from Iran; (2) an identification of the countries that purchase the most natural gas from Iran; (3) an assessment of alternative supplies of natural gas available to those countries; (4) an assessment of the impact a reduction in exports of natural gas from Iran would have on global natural gas supplies and the price of natural gas, especially in countries identified under number (2); and (5) such other information as the Administrator considers appropriate.

  20. Natural gas monthly, November 1993

    SciTech Connect

    Not Available

    1993-11-29

    The Natural Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground state data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information.

  1. Adsorbent storage of natural gas

    Microsoft Academic Search

    M. Gurevich

    1996-01-01

    The natural-gas vehicle represents a cost-competitive, lower-emission alternative to the gasoline-fueled vehicle. The immediate challenge that confronts the natural-gas vehicle is extension of its driving range. This paper addresses the question of driving range by reviewing the storage technologies for natural gas. Technical comparisons are made between storage systems for adsorbent, liquefied and compressed natural gas, and estimates are made

  2. Natural gas monthly: September 1996

    SciTech Connect

    NONE

    1996-09-01

    The Natural Gas Monthly highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information. 6 figs., 24 tabs.

  3. Natural gas monthly: December 1993

    SciTech Connect

    Not Available

    1993-12-01

    The Natural Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. Articles are included which are designed to assist readers in using and interpreting natural gas information.

  4. Natural gas monthly, April 1995

    SciTech Connect

    NONE

    1995-04-27

    The Natural Gas Monthly highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information. 6 figs., 31 tabs.

  5. Natural gas monthly, October 1998

    SciTech Connect

    NONE

    1998-10-01

    The Natural Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information. 6 figs., 27 tabs.

  6. Natural Gas Monthly, March 1996

    SciTech Connect

    NONE

    1996-03-25

    The Natural Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information.

  7. Natural gas monthly, May 1999

    SciTech Connect

    NONE

    1999-05-01

    The Natural Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time the NGM features articles designed to assist readers in using and interpreting natural gas information. 6 figs., 27 tabs.

  8. Natural gas monthly, June 1999

    SciTech Connect

    NONE

    1999-06-01

    The Natural Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information. 6 figs., 25 tabs.

  9. Natural gas monthly, July 1998

    SciTech Connect

    NONE

    1998-07-01

    The Natural Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information. 6 figs., 25 tabs.

  10. Sulfur removal from natural gas

    Microsoft Academic Search

    Hakka

    1974-01-01

    Elemental sulfur entrained in natural gas at the well is removed by first contacting the natural gas with an aqueous solution of 5 to 50 wt % of monoethanolamine and then separating the sulfur-containing aqueous solution from the natural gas.

  11. Natural Disasters and Adaptive Capacity

    Microsoft Academic Search

    Jeff Dayton-Johnson

    2004-01-01

    Natural disasters (droughts, earthquakes, epidemics, floods, wind storms) damage wellbeing, both in their immediate and long-term aftermath, and because the insecurity of exposure to disasters is in itself harmful to risk-averse people. As such, mitigating and coping with the risk of natural disasters is a pressing issue for economic development. This paper provides a conceptual framework for understanding natural disasters.

  12. Natural gas monthly, November 1998

    SciTech Connect

    NONE

    1998-11-01

    The Natural Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. 6 figs., 27 tabs.

  13. Natural gas monthly, January 1999

    SciTech Connect

    NONE

    1999-02-01

    The Natural Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. 6 figs., 28 tabs.

  14. Natural gas monthly, February 1999

    SciTech Connect

    NONE

    1999-02-01

    The Natural Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. 6 figs., 28 tabs.

  15. Children's Moral Relationships with Nature.

    ERIC Educational Resources Information Center

    Kahn, Peter H., Jr.; McCoy, Ann

    Two studies of the development of children's moral relationships with nature addressed such questions as: (1) What does it mean to say that we have an obligation not to harm the natural environment? (2) Does the natural environment feel pain? (3) Does it have rights? or (4) Is moral obligation an inappropriate construct by which to understand the…

  16. Origin of the Natural Laws

    Microsoft Academic Search

    Milo Wolff; Geoff Haselhurst

    2000-01-01

    Before the wave theory of matter natural laws were observed, but not predicted by a physical cause. Their existence was faith in Nature, a God. Now, using a spherical wave structure of the electron-positron, natural laws are predicted exactly as observed - not God-given, but a consequence of the wave structure of matter. The prediction of laws, of electron spin,

  17. warnell school Forestry & Natural Resources

    E-print Network

    Hall, Daniel

    warnell school Forestry & Natural Resources 2010 Annual Report o #12;VisionTo be recognized as one of the top five forestry and natural resource programs in the United States. MissionTo prepare resources; and to place latest ideas and technology in forestry and natural resource management into real

  18. LAND USE AND NATURAL RESOURCES

    E-print Network

    Ferrara, Katherine W.

    1 LAND USE AND NATURAL RESOURCES CONTINUING AND PROFESSIONAL EDUCATION SUMMER 2013 Including in a white Cadillac. It was worth the trip. We in the Land Use and Natural Resources and Sustainability Lave Johnston Director, Land Use and Natural Resources Department UC Davis Extension #12;3 CONTENTS

  19. wind engineering & natural disaster mitigation

    E-print Network

    Denham, Graham

    wind engineering & natural disaster mitigation #12;wind engineering & natural disaster mitigation Investment WindEEE Dome at Advanced Manufacturing Park $31million Insurance Research Lab for Better Homes $8million Advanced Facility for Avian Research $9million #12;wind engineering & natural disaster mitigation

  20. Naturally Occurring Food Toxins

    PubMed Central

    Dolan, Laurie C.; Matulka, Ray A.; Burdock, George A.

    2010-01-01

    Although many foods contain toxins as a naturally-occurring constituent or, are formed as the result of handling or processing, the incidence of adverse reactions to food is relatively low. The low incidence of adverse effects is the result of some pragmatic solutions by the US Food and Drug Administration (FDA) and other regulatory agencies through the creative use of specifications, action levels, tolerances, warning labels and prohibitions. Manufacturers have also played a role by setting limits on certain substances and developing mitigation procedures for process-induced toxins. Regardless of measures taken by regulators and food producers to protect consumers from natural food toxins, consumption of small levels of these materials is unavoidable. Although the risk for toxicity due to consumption of food toxins is fairly low, there is always the possibility of toxicity due to contamination, overconsumption, allergy or an unpredictable idiosyncratic response. The purpose of this review is to provide a toxicological and regulatory overview of some of the toxins present in some commonly consumed foods, and where possible, discuss the steps that have been taken to reduce consumer exposure, many of which are possible because of the unique process of food regulation in the United States. PMID:22069686

  1. Thermoacoustic natural gas liquefier

    SciTech Connect

    Swift, G.W. [Los Alamos National Lab., NM (United States)

    1995-06-01

    In collaboration with Cryenco Inc. and NIST-Boulder, we intend to develop a natural gas-powered natural-gas liquefier which has absolutely no moving parts and requires no electrical power. It will have high efficiency, remarkable reliability, and low cost. Progress on the liquefier to be constructed at Cryenco continues satisfactorily. The thermoacoustic driver is still ahead of the pulse tube refrigerator, because of NIST`s schedule. We completed the thermoacoustics design in the fall of 1994, with Los Alamos providing physics input and checks of all aspects, and Cryenco providing engineering to ASME code, drafting, etc. Completion of this design represents a significant amount of work, especially in view of the many unexpected problems encountered. Meanwhile, Cryenco and NIST have almost completed the design of the pulse tube refrigerator. At Los Alamos, we have assembled a half-size scale model of the thermoacoustic portion of the 500 gal/day TANGL. This scale model will enable easy experimentation in harmonic suppression techniques, new stack geometries, new heat-exchanger geometries, resonator coiling, and other areas. As of March 1995, the scale model is complete and we are performing routine debugging tests and modifications.

  2. Naturally occurring food toxins.

    PubMed

    Dolan, Laurie C; Matulka, Ray A; Burdock, George A

    2010-09-01

    Although many foods contain toxins as a naturally-occurring constituent or, are formed as the result of handling or processing, the incidence of adverse reactions to food is relatively low. The low incidence of adverse effects is the result of some pragmatic solutions by the US Food and Drug Administration (FDA) and other regulatory agencies through the creative use of specifications, action levels, tolerances, warning labels and prohibitions. Manufacturers have also played a role by setting limits on certain substances and developing mitigation procedures for process-induced toxins. Regardless of measures taken by regulators and food producers to protect consumers from natural food toxins, consumption of small levels of these materials is unavoidable. Although the risk for toxicity due to consumption of food toxins is fairly low, there is always the possibility of toxicity due to contamination, overconsumption, allergy or an unpredictable idiosyncratic response. The purpose of this review is to provide a toxicological and regulatory overview of some of the toxins present in some commonly consumed foods, and where possible, discuss the steps that have been taken to reduce consumer exposure, many of which are possible because of the unique process of food regulation in the United States. PMID:22069686

  3. Lands and natural resources

    SciTech Connect

    Sorensen, A.K.

    1985-01-01

    The Tenth Circuit has historically played a major role in the development of Indian law. Among the court's numerous decisions affecting Indians were those involving the standard of proof in cases seeking to disestablish Indian reservations, the duty owed by the Secretary of the Interior to the Indians in the administration of oil and gas leasing on Indian lands, the effect of state gas price control acts on Indian royalties, the necessary standard of compliance with acts allowing non-Indians to obtain interests in Indian real property, the conflict between Indian sovereign immunity and the Federal Rule of Civil Procedure requiring joinder of all necessary parties to an action, and the Indians' power to tax non-Indians who develop the Indians' natural resources. Additionally, this article discusses the enforcement power of Federal Energy Regulatory Commission under the Natural Gas Act; the construction of oil and gas operating agreements as to deep geologic horizons; and finally, the consequences of conveyancing real property when a predecessor in interest has suffered due process violations in the form of defective tax sales or condemnation proceedings.

  4. Natural and artificial photoprotection.

    PubMed

    Cripps, D J

    1981-07-01

    A solar simulator is described with collimated filtered radiation incorporating an optical integrator to more evenly diffuse the xenon 2.5 KW light source. Populations can be catogorized into skin types I-VI and the minimal erythema dose (MED) in each skin type measured in Joules/cm2 was compared to give a relative suntan photoprotection factor or SPF compared with type I (1.0) so that type II had an SPF of 1.67, type III SPF of 2.5, type IV V had an SPF of nearly 4, whereas the darker Negroid skin (type VI) had an SPF of 9.68, or nearly 10 times that of type I. In addition, various studies were performed to determine the natural protection factor after natural sunlight (3 1/2 mo of summer sun). In 21 subjects the mean SPF was 2.33 when compared to the MED on unexposed skin on the buttocks. Five subjects who had received a mean total dose of 3.49 J/cm2 of UVB within a 4-week period had a mean SPF of 8.01 and 5 subjects who had received a mean total dose of 20 J/cm2 of UVA with PUVA therapy within 2 weeks had a mean SPF of 2.7. These studies were compared with the photoprotection ability of topical chemical protective agents with a range of 4-15. PMID:7252250

  5. Natural and artificial photoprotection

    SciTech Connect

    Cripps, D.J.

    1981-07-01

    A solar simulator is described with collimated filtered radiation incorporating an optical integrator to more evenly diffuse the xenon 2.5 KW light source. Populations can be catogorized into skin types I-VI and the minimal erythema dose (MED) in each skin type measured in Joules/cm2 was compared to give a relative suntan photoprotection factor or SPF compared with type I (1.0) so that type II had an SPF of 1.67, type III SPF of 2.5, type IV V had an SPF of nearly 4, whereas the darker Negroid skin (type VI) had an SPF of 9.68, or nearly 10 times that of type I. In addition, various studies were performed to determine the natural protection factor after natural sunlight (3 1/2 mo of summer sun). In 21 subjects the mean SPF was 2.33 when compared to the MED on unexposed skin on the buttocks. Five subjects who had received a mean total dose of 3.49 J/cm2 of UVB within a 4-week period had a mean SPF of 8.01 and 5 subjects who had received a mean total dose of 20 J/cm2 of UVA with PUVA therapy within 2 weeks had a mean SPF of 2.7. These studies were compared with the photoprotection ability of topical chemical protective agents with a range of 4-15.

  6. US crude oil, natural gas, and natural gas liquids reserves

    SciTech Connect

    Not Available

    1990-10-05

    This report presents estimates of proved reserves of crude oil, natural gas, and natural gas liquids as of December 31, 1989, and production volumes for the year 1989 for the total United States and for selected states and state sub-divisions. Estimates are presented for the following four categories of natural gas: total gas (wet after lease separation), its two major components (nonassociated and associated-dissolved gas), and total dry gas (wet gas adjusted for the removal of liquids at natural gas processing plants). In addition, two components of natural gas liquids, lease condensate and natural gas plant liquids, have their reserves and production reported separately. Also included is information on indicated additional crude oil reserves and crude oil, natural gas, and lease condensate reserves in nonproducing reservoirs. 28 refs., 9 figs., 15 tabs.

  7. MESTRADO EM MICROBIOLOGIA TAXONOMIA MICROBIANA Faculdade de Cincias

    E-print Network

    Instituto de Sistemas e Robotica

    MESTRADO EM MICROBIOLOGIA TAXONOMIA MICROBIANA ­ Faculdade de Ciências Objectivos: O principal e métodos utilizados em taxonomia microbiana (em particular de procariotas), encarada nas suas/diagnóstico utilizados actualmente em taxonomia bacteriana. Constituem objectivos adicionais a discussão da

  8. Natural Resource Inventory of the Lake Johnson Park & Nature Preserve Raleigh, North Carolina

    E-print Network

    Hess, George

    Natural Resource Inventory of the Lake Johnson Park & Nature Preserve Raleigh, North Carolina #12; Natural Resources Inventory of Lake Johnson Park & Nature Preserve Raleigh, North Carolina #12; i Natural Resource Inventory of Lake Johnson Park & Nature Preserve Raleigh, North Carolina

  9. Populações estelares em galáxias HII

    NASA Astrophysics Data System (ADS)

    Westera, P.; Cuisinier, F.; Telles, E.; Kehrig, C.

    2003-08-01

    Analisamos o conteúdo estelar de 74 galáxias HII a partir do contínuo observado nos espectros ópticos dessas galáxias, utilizando métodos de síntese de população estelar. Descobrimos que todas as galáxias para as quais encontramos soluções contêm uma população estelar velha que domina a massa estelar, e numa maioria dessas também encontramos evidência de uma população de idade intermediaria além da geração jovem que está se formando agora. Concluímos que a formação estelar dessas galáxias se realiza em surtos individuais, Esses surtos são interrompidos por longos períodos de inatividade, com os primeiros consumindo a maior parte do gás. Sugerimos, portanto, que as galáxias HII sejam galáxias anãs normais flagradas em um período de surto.

  10. Natural gas monthly, August 1993

    SciTech Connect

    Not Available

    1993-08-25

    The Natural Gas Monthly (NGM) is prepared in the Data Operations Branch of the Reserves and Natural Gas Division, Office of Oil and Gas, Energy Information Administration (EIA), US Department of Energy (DOE). The NGM highhghts activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information.

  11. Natural gas monthly, June 1994

    SciTech Connect

    Not Available

    1994-06-01

    The Natural Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information. The feature article this month is the executive summary from Natural Gas 1994: Issues and Trends. 6 figs., 31 tabs.

  12. Natural gas monthly, November 1996

    SciTech Connect

    NONE

    1996-11-01

    The report highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the Natural Gas Monthly features articles designed to assist readers in using and interpreting natural gas information. The feature article this month is ``US natural gas imports and exports-1995``. 6 figs., 24 tabs.

  13. Natural gas monthly, October 1997

    SciTech Connect

    NONE

    1997-10-01

    The Natural Gas Monthly highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information. The feature article in this issue is a special report, ``Comparison of Natural Gas Storage Estimates from the EIA and AGA.`` 6 figs., 26 tabs.

  14. Natural gas monthly, October 1996

    SciTech Connect

    NONE

    1996-10-01

    The Natural Gas Monthly (NGM) is prepared in the Data Operations Branch of the Reserves and Natural Gas Division, Office of Oil and Gas, Energy Information Administration (EIA), U.S. Department of Energy (DOE). The NGM highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information.

  15. Natural gas monthly, July 1997

    SciTech Connect

    NONE

    1997-07-01

    The Natural Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information. The feature article this month is entitled ``Intricate puzzle of oil and gas reserves growth.`` A special report is included on revisions to monthly natural gas data. 6 figs., 24 tabs.

  16. Natural gas monthly, May 1994

    SciTech Connect

    Not Available

    1994-05-25

    The Natural Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information. The featured articles for this month are: Opportunities with fuel cells, and revisions to monthly natural gas data.

  17. Natural gas monthly, April 1997

    SciTech Connect

    NONE

    1997-04-01

    The Natural Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are present3ed each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information. The feature article is entitled ``Natural gas pipeline and system expansions.`` 6 figs., 27 tabs.

  18. letters to nature 80 NATURE |VOL 411 |3 MAY 2001 |www.nature.com

    E-print Network

    Sur, Mriganka

    letters to nature 80 NATURE |VOL 411 |3 MAY 2001 |www.nature.com concentrated eggs and sperm) and have found no effects on larval metabolic rates. We measured the protein content of eggs by Bradford assay with bovine serum albumin as the standard. Lipid class analyses were performed using thin layer

  19. letters to nature NATURE |VOL 404 |9 MARCH 2000 |www.nature.com 193

    E-print Network

    letters to nature NATURE |VOL 404 |9 MARCH 2000 |www.nature.com 193 12. Thompson, P. M. & Toga, A transformations. Med. Image Anal. 1, 271±294 (1997). 14. Thompson, P. M. & Toga, A. W. in Brain Warping (ed. Toga

  20. insight progress NATURE | VOL 420 | 19/26 DECEMBER 2002 | www.nature.com/nature 875

    E-print Network

    Cai, Long

    insight progress NATURE | VOL 420 | 19/26 DECEMBER 2002 | www.nature.com/nature 875 I n imperial times, the Great Wall of China was easily breached and was not in itself a very effective defence and beckoning more substantial back-up forces. Mast cells, which are scattered in skin and mucosa, have

  1. Natural history and the Encyclopedie.

    PubMed

    Llana, J

    2000-01-01

    The general popularity of natural history in the eighteenth century is mirrored in the frequency and importance of the more than 4,500 articles on natural history in the Encyclopedie. The main contributors to natural history were Daubenton, Diderot, Jaucourt and d'Holbach, but some of the key animating principles derive from Buffon, who wrote nothing specifically for the Encyclopedie. Still, a number of articles reflect his thinking, especially his antipathy toward Linnaeus. There was in principle a natural tie between encyclopedism, with its emphasis on connected knowledge, and the task of natural historians who concentrated on the relationships among living forms. Both the encyclopedists and the natural historians aimed at a sweeping overview of knowledge, and we see that Diderot's discussions of the encyclopedia were apparently informed by his reading of natural history. Most of the articles on natural history drew from traditional sources, but there are differences in emphasis and choice of subject, depending upon the author. Diderot's 300 contributions are often practical, interesting, and depend upon accounts from other parts of the world. Jaucourt, who wrote more articles on natural history than anyone else, followed in his foodsteps. Daubenton's 900 articles reflected a more narrow, professional approach. His contributions concluded for the most part with Volume 8, and Jaucourt carried on almost single-handedly after that. While staking out traditional ground (description, taxonomy) and advancing newer theoretical views linked with Buffon, natural history in the Encyclopedie avoided almost completely the sentimentalism concerning nature that developed after Rousseau. PMID:11624414

  2. ESTUDO DO MEIO EM UMESTUDO DO MEIO EM UM BAIRRO POPULAR NABAIRRO POPULAR NA

    E-print Network

    ESTUDO DO MEIO EM UMESTUDO DO MEIO EM UM BAIRRO POPULAR NABAIRRO POPULAR NA CIDADE DECIDADE DE DIDÁTICA EM QUE CONSITE O NOSSOEM QUE CONSITE O NOSSO PROJETO?PROJETO? MATERIAISMATERIAIS CAPACITAÇÃO PARTICIPATIVOORÇAMENTO PARTICIPATIVO #12;ALGUNS PROBLEMASALGUNS PROBLEMAS PROJETOS FUTUROSPROJETOS FUTUROS COORDENAÇÃO EM

  3. EM and Stochastic EM algorithms for reliability mixture models under random censoring

    E-print Network

    Paris-Sud XI, Université de

    EM and Stochastic EM algorithms for reliability mixture models under random censoring Laurent.chauveau@univ-orleans.fr April 6, 2012 Abstract We present in this paper several iterative methods based on EM and Stochas- tic EM methodology, that allow to estimate parametric or semiparametric mix- ture models for randomly

  4. (7) PRÁTICAS DE EDUCAÇÃO AMBIENTAL EM AULAS DE QUÍMICA EM UMA VISÃO SOCIOAMBIENTAL: PERSPECTIVAS E DESAFIOS

    Microsoft Academic Search

    Wildson L. P. Santos; Patrícia F. L. Machado; Roseli T. Matsunaga; Elton L. Silva; Erlete S. Vasconcellos; Valéria R. Santana

    2010-01-01

    Neste artigo, são apresentados resultados obtidos em quatro estudos de casos sobre a introdução de educação ambiental em uma visão socioambiental em aulas de Química. A discussão dos resultados levanta reflexões sobre perspectivas e desafios para a educação ambiental no ensino de Química. São demonstradas sugestões de atividades possíveis de serem desenvolvidas em aulas de Químicas. Várias fontes de dados

  5. Natural gas monthly, April 1998

    SciTech Connect

    NONE

    1998-04-01

    This issue of the Natural Gas Monthly presents the most recent estimates of natural gas data from the Energy Information Administration (EIA). Estimates extend through April 1998 for many data series. The report highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, feature articles are presented designed to assist readers in using and interpreting natural gas information. This issue contains the special report, ``Natural Gas 1997: A Preliminary Summary.`` This report provides information on natural gas supply and disposition for the year 1997, based on monthly data through December from EIA surveys. 6 figs., 28 tabs.

  6. Review -EM Waves Wavelengths of 108 to

    E-print Network

    Bertulani, Carlos A. - Department of Physics and Astronomy, Texas A&M University

    #12;Review - EM Waves EM Waves Wavelengths of 108 to 10-16 meters (10-1024 Hz) Traveling wave) given by BES rrr ×= 0 1 )(sin 111 22 0 2 00 tkxE c E c EBS m -=== Review - EM Waves 2 0 1 mpeak E c pr = c I pr = c I pr 2 = Total absorption Total reflection EM Waves: Radiation pressure #12;Source

  7. New Probe of Naturalness

    NASA Astrophysics Data System (ADS)

    Craig, Nathaniel; Englert, Christoph; McCullough, Matthew

    2013-09-01

    Any new scalar fields that perturbatively solve the hierarchy problem by stabilizing the Higgs boson mass also generate new contributions to the Higgs boson field-strength renormalization, irrespective of their gauge representation. These new contributions are physical, and in explicit models their magnitude can be inferred from the requirement of quadratic divergence cancellation; hence, they are directly related to the resolution of the hierarchy problem. Upon canonically normalizing the Higgs field, these new contributions lead to modifications of Higgs couplings that are typically great enough that the hierarchy problem and the concept of electroweak naturalness can be probed thoroughly within a precision Higgs boson program. Specifically, at a lepton collider this can be achieved through precision measurements of the Higgs boson associated production cross section. This would lead to indirect constraints on perturbative solutions to the hierarchy problem in the broadest sense, even if the relevant new fields are gauge singlets.

  8. Natural Air Purifier

    NASA Technical Reports Server (NTRS)

    1993-01-01

    NASA environmental research has led to a plant-based air filtering system. Dr. B.C. Wolverton, a former NASA engineer who developed a biological filtering system for space life support, served as a consultant to Terra Firma Environmental. The company is marketing the BioFilter, a natural air purifier that combines activated carbon and other filter media with living plants and microorganisms. The filter material traps and holds indoor pollutants; plant roots and microorganisms then convert the pollutants into food for the plant. Most non-flowering house plants will work. After pollutants have been removed, the cleansed air is returned to the room through slits in the planter. Terra Firma is currently developing a filter that will also disinfect the air.

  9. Nature: American Eagle

    NSDL National Science Digital Library

    With its bold beak and talented talons, the bald eagle is perhaps one of the best symbols of the United States of America. Recently, the Nature program on PBS created this documentary to profile this majestic animal. Visitors to the site can watch the program in its entirety, leave their own comments, and learn about bald eagles' evolutionary ancestors. That's not all, as visitors can also look over an interactive map that tracks bald eagle populations over the past decades. For those who might want to watch smaller sections of the film, there are short clips available as well, including "Sibling Rivalry" and "Autumn Bounty on the Mississippi". Finally, visitors can also give their own feedback on the program, and there's a chance that the producer might chime in with his own response.

  10. Natural killer cell deficiency

    PubMed Central

    Orange, Jordan S.

    2013-01-01

    Natural killer (NK) cells are part of the innate immune defense against infection and cancer, and are especially useful in combating certain viral pathogens. The utility of NK cells in human health has been underscored by a growing number of individuals who are deficient in NK cells and/or their functions. This can be in the context of a broader genetically-defined congenital immunodeficiency of which there are over forty presently known to impair NK cells. The abnormality of NK cells, however, in certain cases represents the majority immunological defect. In aggregate, these conditions are termed NK cell deficiency. Recent advances have added clarity to this diagnosis and identified defects in three different genes that can cause NK cell deficiency as well as some of the underlying biology. Appropriate consideration of these diagnoses and patients raises the potential for rational therapeutic options and further innovation. PMID:23993353

  11. Natural dispersion revisited.

    PubMed

    Johansen, Øistein; Reed, Mark; Bodsberg, Nils Rune

    2015-04-15

    This paper presents a new semi-empirical model for oil droplet size distributions generated by single breaking wave events. Empirical data was obtained from laboratory experiments with different crude oils at different stages of weathering. The paper starts with a review of the most commonly used model for natural dispersion, which is followed by a presentation of the laboratory study on oil droplet size distributions formed by breaking waves conducted by SINTEF on behalf of the NOAA/UNH Coastal Response Research Center. The next section presents the theoretical and empirical foundation for the new model. The model is based on dimensional analysis and contains two non-dimensional groups; the Weber and Reynolds number. The model was validated with data from a full scale experimental oil spill conducted in the Haltenbanken area offshore Norway in July 1982, as described in the last section of the paper. PMID:25752537

  12. Nature . . . an environmental yardstick

    USGS Publications Warehouse

    Pecora, William T.

    1976-01-01

    To one who has spent his professional career in geologic science, conservation always has had special meaning. In the measurements so necessary to his work the geologist develops an integrity in the use of numbers and in the qualifications attending the validity of numbers. Scientific analysis of geologic events and sequence develops a keen sense of what is coincidental, correlative, and consequential. The geologist applies his science in evaluating hazards to man as natural catastrophes and/or benefits to man such as earth materials that form the resource base of his society. But more than these the geologist has acquired a deep appreciation for the planet as a whole, its inner structure, its landscape, and the living things that abound.

  13. The nature of confidentiality.

    PubMed Central

    Thompson, I E

    1979-01-01

    This paper examines confidentiality and its nature and analyses the guidelines laid down by the Hippocratic Oath as well as the British and World Medical Associations for maintaining such confidentiality between doctor and patient. There are exceptions to practically any code of rules and this is true also for confidentiality. Some of these exceptions make it appear that very little is confidential. The three values implicit in confidentiality would seem to be privacy, confidence and secrecy. Each of these values is discussed and developed in this paper. In conclusion, the question is suggested that maybe in the face of death, doctor and patient need to re-examine the pre-suppositions of privacy, confidence and secrecy on which the confidential relationship is based. PMID:469872

  14. Nature: Katrina's Animal Rescue

    NSDL National Science Digital Library

    2005-01-01

    There have been many stories that have come out in the aftermath of Hurricane Katrina, and most of them have dealt with the human tragedies involved in this traumatic set of events. The people at the long-running PBS series, Nature, have created this website to complement a recent edition of the show that offered some insights into the effects the hurricane had on the animal population of Louisiana. On the site, visitors can take advantage of a number of special interactive features. These features allow visitors to ask questions of those involved in the animal rescue efforts and learn about the psychological and physical effects on animals. The site also contains a section where visitors can learn about other web-based resources, such as the homepages for Animal Rescue New Orleans and the Best Friends Animal Society.

  15. Ordem orientacional em sistemas com interaes competitivas

    E-print Network

    Stariolo, Daniel Adrián

    Ordem orientacional em sistemas com interações competitivas Daniel A. Stariolo Universidade Federal do Rio Grande do Sul 2012 i #12;Sumário 1 Ordem em sistemas de matéria condensada 1 1.1 Ordem posicional e orientacional em cristais líquidos, microemul- sões e copolímeros de dibloco

  16. PRMIO PRIMUS INTER PARES Construir em equipa

    E-print Network

    Instituto de Sistemas e Robotica

    PRÉMIO PRIMUS INTER PARES Construir em equipa as lideranças futuras 24 jovens testam competências na semifinal, em Peniche. Só um será o primeiro entre os seus pares Primeiro exercício da semifinal, como o imagi- nam. Como vão poder resumir o seu percurso profissional daqui a 25 anos, em 2038? Nas

  17. Pesquisas em Astrofsica no Oswaldo Duarte Miranda

    E-print Network

    Pesquisas em Astrofísica no INPE Oswaldo Duarte Miranda Divisão de Astrofísica ­ DAS #12 sua influência na magnetosfera terrestre. Abaixo: mapa do Sol em 22 GHz #12; Física do Meio Investigações são feitas através de observações em várias faixas do espectro eletromagnético, utilizandose

  18. Halibut/Sablefish EM Pilot Project

    E-print Network

    Halibut/Sablefish EM Pilot Project A Collaboration Involving: · Alaska Longline Fishermen's Assn · Engage stakeholders in developing a workable at-sea monitoring program · Field test EM hardware effective means of deploying EM hardware among vessels and retrieving data · Summarize study findings

  19. Falta de investimento prejudica sector em Portugal

    E-print Network

    Instituto de Sistemas e Robotica

    Falta de investimento prejudica sector em Portugal O país tem bons profissionais e potencialidades comunidade científica, em aplicar os conhecimentos na área e Portugal "tem uma boa infra-estrutura humana e, mas em Portugal investe-se apenas nos três primeiros anos - leva muitos investigadores a desistir

  20. Segurana em Sistemas Distribudos confidencialidade

    E-print Network

    Rodriguez, Noemi

    chamada de segredo compartilhado · também chamada de criptografia simétrica criptografar texto chaves secretas · como fazer para as duas partes compartilharem um segredo? · uso de Key Distribution conceito com Diffie-Hellman, em 1976 ­ D-H apenas para estabelecimento de segredo compartilhado

  1. Pgina Inicial Empresas Start-ups portuguesas mostram-se hoje a investidores suecos em Lisboa Empresas criadas em

    E-print Network

    Instituto de Sistemas e Robotica

    Página Inicial Empresas Start-ups portuguesas mostram-se hoje a investidores suecos em Lisboa Empresas criadas em Portugal atingem as 31.400 em 2012 e superam... As empresas criadas em Portugal ascenderam a 31.400 em 2012, superando os... REGISTO | COMUNIDADE | Insolvência de empresas aumentou 41% em

  2. Aprovado pelo Colegiado do Curso de Ps-Graduao em Farmacologia em 16 de Julho de 1999. REGIMENTO DO CURSO DE PS-GRADUAO EM

    E-print Network

    Floeter, Sergio Ricardo

    Aprovado pelo Colegiado do Curso de Pós-Graduação em Farmacologia em 16 de Julho de 1999. REGIMENTO DO CURSO DE PÓS-GRADUAÇÃO EM FARMACOLOGIA DO CENTRO DE CIÊNCIAS BIOLÓGICAS DA UNIVERSIDADE FEDERAL DE SANTA CATARINA CAPÍTULO I SEÇÃO I DO OBJETIVO Art. 1o - O Curso de Pós-Graduação em Farmacologia em

  3. Natural farming in Louisiana

    SciTech Connect

    Hair, M.

    1983-03-31

    This project evaluates the possibility of producing rice and winter grain on the Gulf Coast of Louisiana using very little or no fossil fuel inputs. Radically different natural farming techniques pioneered in Japan were used to establish a continuous yearly cycle of rice, wheat and clover culture with human labor substituted where possible for mineral fuel dependent inputs. An examination of energy flows in food producing systems generally forms the theoretical framework for a discussion and comparison of particular agricultural systems. The components of a complete yearly cycle of farming practices were carried out experimentally, observed, and evaluated. Several varieties of wheat and cover crops were planted in the fall and harvested in the spring, several varieties of rice were broadcast no-till, irrigated, weeded, harvested and milled, and measurements and observation of stand, weeds, insects, disease, nutrients, and harvesting and milling methods were made and discussed. Human labor inputs were recorded and an economic and energetic evaluation of the overall method was made.

  4. Nature of orchestral noise.

    PubMed

    O'Brien, Ian; Wilson, Wayne; Bradley, Andrew

    2008-08-01

    Professional orchestral musicians are at risk of exposure to excessive noise when at work. This is an industry-wide problem that threatens not only the hearing of orchestral musicians but also the way orchestras operate. The research described in this paper recorded noise levels within a professional orchestra over three years in order to provide greater insight to the orchestral noise environment; to guide future research into orchestral noise management and hearing conservation strategies; and to provide a basis for the future education of musicians and their managers. Every rehearsal, performance, and recording from May 2004 to May 2007 was monitored, with the woodwind, brass, and percussion sections monitored in greatest detail. The study recorded dBALEQ and dBC peak data, which are presented in graphical form with accompanying summarized data tables. The findings indicate that the principal trumpet, first and third horns, and principal trombone are at greatest risk of exposure to excessive sustained noise levels and that the percussion and timpani are at greatest risk of exposure to excessive peak noise levels. However, the findings also strongly support the notion that the true nature of orchestral noise is a great deal more complex than this simple statement would imply. PMID:18681585

  5. Optically switchable natural silk

    NASA Astrophysics Data System (ADS)

    Krasnov, Igor; Krekiehn, Nicolai R.; Krywka, Christina; Jung, Ulrich; Zillohu, Ahnaf U.; Strunskus, Thomas; Elbahri, Mady; Magnussen, Olaf M.; Müller, Martin

    2015-03-01

    An optically active bio-material is created by blending natural silk fibers with photoisomerizable chromophore molecules—azobenzenebromide (AzBr). The material converts the energy of unpolarized light directly into mechanical work with a well-defined direction of action. The feasibility of the idea to produce optically driven microsized actuators on the basis of bio-material (silk) is proven. The switching behavior of the embedded AzBr molecules was studied in terms of UV/Vis spectroscopy. To test the opto-mechanical properties of the modified fibers and the structural changes they undergo upon optically induced switching, single fiber X-ray diffraction with a micron-sized synchrotron radiation beam was combined in situ with optical switching as well as with mechanical testing and monitoring. The crystalline regions of silk are not modified by the presence of the guest molecules, hence occupy only the amorphous part of the fibers. It is shown that chromophore molecules embedded into fibers can be reversibly switched between the trans and cis conformation by illumination with light of defined wavelengths. The host fibers respond to this switching with a variation of the internal stress. The amplitude of the mechanical response is independent of the applied external stress and its characteristic time is shorter than the relaxation time of the usual mechanical response of silk.

  6. Natural gas purchases

    SciTech Connect

    Grenier, E.J. Jr. [Partner, Sutherland, Asbill and Brennan, Washington, DC (United States)

    1995-09-01

    In the 1970`s gas and boilers were like oil and water as far as policy makers were concerned, culminating in the Powerplant and Industrial Fuel Use Act (perhaps a more appropriate title would have been the Fuel Non-Use Act or the Gas Non-Use Act). But now, the last two Administrations have made gas the centerpiece of their energy and environmental strategies, including promotion of gas use for boilers and electric generation. The FERC`s Order 636 almost completes the Commission`s restructuring of the gas industry that began with Order 380 (eliminating commodity minimum bills) and progressed sharply with Orders 436 and 500. It is Order 636 that has transformed the interstate pipeline business into a transportation business, with the pipelines virtually out of the merchant business altogether because the Commission is not resting on its laurels after completing implementation of Order 636. Rather, it is exploring new ways to expand the growing competitive market for gas, including the possibility of using market-based rates for interstate pipeline transportation services. Methods for the procurement of natural gas supplies are discussed.

  7. Nature of Human Error

    PubMed Central

    Cuschieri, Alfred

    2006-01-01

    Background: As the attitude to adverse events has changed from the defensive “blame and shame culture” to an open and transparent healthcare delivery system, it is timely to examine the nature of human errors and their impact on the quality of surgical health care. Methods: The approach of the review is generic rather than specific, and the account is based on the published psychologic and medical literature on the subject. Conclusions: Rather than detailing the various “surgical errors,” the concept of error categories within the surgical setting committed by surgeons as front-line operators is discussed. The important components of safe surgical practice identified include organizational structure with strategic control of healthcare delivery, teamwork and leadership, evidence-based practice, proficiency, continued professional development of all staff, availability of wireless health information technology, and well-embedded incident reporting and adverse events disclosure systems. In our quest for the safest possible surgical health care, there is a need for prospective observational multidisciplinary (surgeons and human factors specialists) studies as distinct for retrospective reports of adverse events. There is also need for research to establish the ideal system architecture for anonymous reporting of near miss and no harm events in surgical practice. PMID:17060751

  8. Pain and natural disaster.

    PubMed

    Guetti, Cristiana; Angeletti, Chiara; Paladini, Antonella; Varrassi, Giustino; Marinangeli, Franco

    2013-09-01

    The treatment for pain in emergency medicine is a matter of increasing interest. Available data indicate that in both normal conditions and during major-emergencies, the majority of healthcare providers are culturally and professionally unprepared to adequately treat acute pain conditions. In case of natural disasters, opioid drugs are often unavailable. Moreover, no guidelines or validated protocols provide adequate indications for the treatment for pain in case of massive emergencies. Training of the medical and nursing staff, in both formal and continuing, or on-the-job education is needed to adequately face a devastating emergency. Unfortunately, there is an inadequate level of training among healthcare professionals, even in highly seismic areas, and the source of aid is frequently limited, especially in the immediate aftermath of a disaster to those already present at the scene. Pain inadequately treated may modify the characteristics of the pain itself. Pain is no longer considered just a symptom, but itself becomes an autonomous pathology heavily influencing the social life and psycho-social aspects of a person. In the disastrous situation following an earthquake, an inadequate treatment of pain was the major violation of the psycho-physical integrity of individuals and a severe violation of their rights, as human beings and patients. PMID:23241164

  9. Super-Natural MSSM

    E-print Network

    Du, Guangle; Nanopoulos, D V; Raza, Shabbar

    2015-01-01

    We point out that the electroweak fine-tuning problem in the supersymmetric Standard Models (SSMs) is mainly due to the high energy definition of the fine-tuning measure. We propose super-natural supersymmetry which has an order one high energy fine-tuning measure automatically. The key point is that all the mass parameters in the SSMs arise from a single supersymmetry breaking parameter. In this paper, we show that there is no supersymmetry electroweak fine-tuning problem explicitly in the Minimal SSM (MSSM) with no-scale supergravity and Giudice-Masiero (GM) mechanism. We demonstrate that the $Z$-boson mass, the supersymmteric Higgs mixing parameter $\\mu$ at the unification scale, and the sparticle spectrum can be given as functions of the universal gaugino mass $M_{1/2}$. Because the light stau is the lightest supersymmetric particle (LSP) in the no-scale MSSM, to preserve $R$ parity, we introduce a non-thermally generated axino as the LSP dark matter candidate. We estimate the lifetime of the light stau b...

  10. Natural gas monthly, September 1998

    SciTech Connect

    NONE

    1998-09-01

    The National Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information. 6 figs., 27 tabs.

  11. Natural gas monthly, May 1995

    SciTech Connect

    NONE

    1995-05-24

    The NGM highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information.

  12. Natural gas monthly, March 1998

    SciTech Connect

    NONE

    1998-03-01

    The March 1998 edition of the Natural Gas Monthly highlights activities, events, and analyses associated with the natural gas industry. Volume and price data are presented for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. This report also features an article on the correction of errors in the drilling activity estimates series, and in-depth drilling activity data. 6 figs., 28 tabs.

  13. Contaminant Removal From Natural Resources

    NASA Technical Reports Server (NTRS)

    Clausen, Christian A. (Inventor); Quinn, Jacqueline W. (Inventor); Geiger, Cheri L. (Inventor); Reinhart, Debra (Inventor); Fillpek, Laura B. (Inventor); Coon, Christina (Inventor); Devor, Robert (Inventor)

    2006-01-01

    A zero-valent metal emulsion containing zero-valent metal particles is used to remediate contaminated natural resources, such as groundwater and soil. In a preferred embodiment, the zero-valent metal emulsion removes heavy metals, such as lead (pb), from contaminated natural resources. In another preferred embodiment, the zero-valent metal emulsion is a bimetallic emulsion containing zero-valent metal particles doped with a catalytic metal to remediate halogenated aromatic compounds, such as polychlorinated biphenyls (PCBs), from natural resources.

  14. Natural gas monthly, February 1994

    SciTech Connect

    Not Available

    1994-02-25

    The NGM highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. The NGM also features articles designed to assist readers in using and interpreting natural gas information.

  15. Angus Robichaud's Reel G Em D A Bm D7

    E-print Network

    Doyle, Peter

    Angus Robichaud's Reel 4 4 D G A D D G A D 3 3 G Em D A Bm D7 3 3 G Em D A D Animas Reel Bernie Waugh 4 4 3 3 G D G Bm Em C Am C D G D G Bm Em C Am D G The Arkansas Traveler 4 2 D G A D Em A 3 D G A D Em G A D D G D A Bm Em A D G D A Em G A D #12; Asher Rodney Miller 4 4 D Em F#m G A D Em G A D A D 1

  16. Angus Robichaud's Reel G Em D A Bm D7

    E-print Network

    Doyle, Peter

    Angus Robichaud's Reel 4 4 D G A D D G A D 3 3 G Em D A Bm D7 3 3 G Em D A D Animas Reel Bernie Waugh 4 4 3 3 G D G Bm Em C Am C D G D G Bm Em C Am D G The Arkansas Traveler 4 2 D G A D Em A 3D G A D Em G A D D G D A Bm Em A D G D A Em G A D #12;Asher Rodney Miller 4 4 D Em F#m G A D Em G A D A D1 2

  17. NATURE NANOTECHNOLOGY | www.nature.com/naturenanotechnology 1 SUPPLEMENTARY INFORMATION

    E-print Network

    Stockman, Mark I.

    NATURE NANOTECHNOLOGY | www.nature.com/naturenanotechnology 1 SUPPLEMENTARY INFORMATION DOI: 10, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy. 4 BIONEM, Bio-Nanotechnology and Engineering for Medicine, Department of experimental and clinical medicine, University of Magna Graecia Viale

  18. 34 CFR 303.18 - Natural environments.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...2010-07-01 2010-07-01 false Natural environments. 303.18 Section 303.18 Education...General Provisions § 303.18 Natural environments. As used in this part, natural environments means settings that are natural...

  19. 34 CFR 303.18 - Natural environments.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...2011-07-01 2010-07-01 true Natural environments. 303.18 Section 303.18 Education...General Provisions § 303.18 Natural environments. As used in this part, natural environments means settings that are natural...

  20. 34 CFR 303.26 - Natural environments.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...2013-07-01 2013-07-01 false Natural environments. 303.26 Section 303.26 Education...Definitions Used in This Part § 303.26 Natural environments. Natural environments means settings that are natural or...

  1. 34 CFR 303.26 - Natural environments.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...2014-07-01 2013-07-01 true Natural environments. 303.26 Section 303.26 Education...Definitions Used in This Part § 303.26 Natural environments. Natural environments means settings that are natural or...

  2. 34 CFR 303.26 - Natural environments.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...2012-07-01 2012-07-01 false Natural environments. 303.26 Section 303.26 Education...Definitions Used in This Part § 303.26 Natural environments. Natural environments means settings that are natural or...

  3. Super-Natural MSSM

    E-print Network

    Guangle Du; Tianjun Li; D. V. Nanopoulos; Shabbar Raza

    2015-02-24

    We point out that the electroweak fine-tuning problem in the supersymmetric Standard Models (SSMs) is mainly due to the high energy definition of the fine-tuning measure. We propose super-natural supersymmetry which has an order one high energy fine-tuning measure automatically. The key point is that all the mass parameters in the SSMs arise from a single supersymmetry breaking parameter. In this paper, we show that there is no supersymmetry electroweak fine-tuning problem explicitly in the Minimal SSM (MSSM) with no-scale supergravity and Giudice-Masiero (GM) mechanism. We demonstrate that the $Z$-boson mass, the supersymmteric Higgs mixing parameter $\\mu$ at the unification scale, and the sparticle spectrum can be given as functions of the universal gaugino mass $M_{1/2}$. Because the light stau is the lightest supersymmetric particle (LSP) in the no-scale MSSM, to preserve $R$ parity, we introduce a non-thermally generated axino as the LSP dark matter candidate. We estimate the lifetime of the light stau by calculating its 2-body and 3-body decays to the LSP axino for several values of axion decay constant $f_a$, and find that the light stau has a lifetime $\\tau_{\\tilde \\tau_1}$ in $[10^{-4},100]$ s for an $f_a$ range $[10^{9},10^{12}]$ GeV. We show that our next to the LSP stau solutions are consistent with all the current experimental constraints, including the sparticle mass bounds, B-physics bounds, Higgs mass, cosmological bounds, and the bounds on long-lived charge particles at the LHC.

  4. www.nature.com/reviews Leadingthe field

    E-print Network

    Cai, Long

    * Nature Reviews Nephrology* Nature Reviews Neurology* Nature Reviews Rheumatology* Nature Reviews Urology to classification, ANCA detection and trial design focus Vasculitis RHEUMATOLOGY nrrheum_OFC_AUG14.indd 1 15. www.nature.com/reviews/neurol Nature Reviews Rheumatology Chief Editor: Jenny Buckland, PhD Impact

  5. www.nature.com/reviews Leadingthe field

    E-print Network

    Cai, Long

    * Nature Reviews Nephrology* Nature Reviews Neurology* Nature Reviews Rheumatology* Nature Reviews Urology in RA and SpA Characteristics and treatment RHEUMATOLOGY nrrheum_OFC_JUL13.indd 1 17/06/2013 16. www.nature.com/reviews/neurol Nature Reviews Rheumatology Chief Editor: Jenny Buckland, PhD Impact

  6. 18 CFR 2.78 - Utilization and conservation of natural resources-natural gas.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...conservation of natural resources-natural gas. 2.78 Section 2.78 ...Policy and Interpretations Under the Natural Gas Act § 2.78 Utilization and conservation of natural resources—natural gas. (a)(1) The national...

  7. 18 CFR 2.78 - Utilization and conservation of natural resources-natural gas.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ...conservation of natural resources-natural gas. 2.78 Section 2.78 ...Policy and Interpretations Under the Natural Gas Act § 2.78 Utilization and conservation of natural resources—natural gas. (a)(1) The national...

  8. 18 CFR 2.78 - Utilization and conservation of natural resources-natural gas.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ...conservation of natural resources-natural gas. 2.78 Section 2.78 ...Policy and Interpretations Under the Natural Gas Act § 2.78 Utilization and conservation of natural resources—natural gas. (a)(1) The national...

  9. 18 CFR 2.78 - Utilization and conservation of natural resources-natural gas.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ...conservation of natural resources-natural gas. 2.78 Section 2.78 ...Policy and Interpretations Under the Natural Gas Act § 2.78 Utilization and conservation of natural resources—natural gas. (a)(1) The national...

  10. M. Bahrami ENSC 388 (F09) Natural Convection 1 Natural Convection

    E-print Network

    Bahrami, Majid

    Convection 1 Natural Convection In natural convection, the fluid motion occurs by natural means such as buoyancy. Since the fluid velocity associated with natural convection is relatively low, the heat transfer coefficient encountered in natural convection is also low. Mechanisms

  11. Development of an EMS curriculum.

    PubMed

    Brice, Jane H; Perina, Debra G; Liu, J Marc; Braude, Darren A; Rinnert, Kathy J; MacDonald, Russell D

    2014-01-01

    Emergency medical services (EMS) became an American Board of Medical Specialties (ABMS) approved subspecialty of emergency medicine in September 2010. Achieving specialty or subspecialty recognition in an area of medical practice requires a unique body of knowledge, a scientific basis for the practice, a significant number of physicians who dedicate a portion of their practice to the area, and a sufficient number of fellowship programs. To prepare EMS fellows for successful completion of fellowship training, a lifetime of subspecialty practice, and certification examination, a formalized structured fellowship curriculum is necessary. A functional curriculum is one that takes the entire body of knowledge necessary to appropriately practice in the identified area and codifies it into a training blueprint to ensure that all of the items are covered over the prescribed training period. A curriculum can be as detailed as desired but typically all major headings and subheadings of the core content are identified and addressed. Common curricular components, specific to each area of the core content, include goals and objectives, implementation methods, evaluation, and outcomes assessment methods. Implementation methods can include simulation, observations, didactics, and experiential elements. Evaluation and outcomes assessment methods can include direct observation of patient assessment and treatment skills, structured patient simulations, 360° feedback, written and oral testing, and retrospective chart reviews. This paper describes a curriculum that is congruent with the current EMS core content, as well as providing a 12-month format to deploy the curriculum in an EMS fellowship program. Key words: curriculum; education; emergency medical services; fellowships and scholarships. PMID:24156509

  12. Natural gas monthly, August 1990

    SciTech Connect

    Not Available

    1990-11-05

    This report highlights activities, events, and analyses of interest to public and private sector oganizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. 33 tabs.

  13. Natural-draft Cooling Tower

    USGS Multimedia Gallery

    Natural-draft cooling towers and one of two intake screens and associated pumps for the Tennessee Valley Authority, Sequoyah Nuclear Power Plant, Tennessee. Natural-draft tower airflow is drawn through the packing or fill (distributed at the base) by means of the small density difference between the...

  14. Anania Shirakatsi's Natural Philosophical Views

    NASA Astrophysics Data System (ADS)

    Arevshatyan, Sen

    2014-10-01

    A review on Anania Shirakatsi's natural philosophical views is given. He was the first to distinguish natural sciences from philosophy, establishing the basis for such sciences as mathematics, cosmography, astronomy, meteorology, chronology, and metrology. Shirakatsi's works are discussed related to these sciences.

  15. Natural Selection: How Evolution Works

    NSDL National Science Digital Library

    Douglas Futuyma (State University of New York at Stony Brook; )

    2004-12-01

    The issue-focused interview demonstrates how natural selection is a very efficient, predictable mechanism of evolution. It illustrates how species adapt to their environment, the reproductive success of a species, design in nature and presents evidence of evolution in action, e.g., antibiotic resistance.

  16. Reproducibility of natural head position.

    PubMed

    Chiu, C S; Clark, R K

    1991-04-01

    The orientation of the head, when the natural head position was adopted, was measured relative to the true vertical on standardized black and white profile photographs. Two methods of obtaining the natural head position were compared and their reproducibility tested. No statistically significant difference was found between the two different methods or at different sittings. PMID:2050893

  17. NATURAL EMISSIONS OF OXIDANT PRECURSORS

    EPA Science Inventory

    This paper provides an overview of the sources, the estimation methodology, and the relative amounts of natural hydrocarbon and nitrogen oxide emissions. he most recent estimate of natural nonmethane hydrocarbon (NMHC) emissions for the United States is 28 teragrams per year (Tg/...

  18. Nature versus Nurture in Longevity

    Microsoft Academic Search

    Avi Simhon

    2010-01-01

    This paper estimates the contribution of nature and nurture to the variance of longevity in a cross section of individuals. Our approach differs from that used in the genetics and biological literature in that we develop a simple model of longevity determination and use it to bound the contribution of nature to longevity. Using estimates of the key model parameters

  19. The Problem of Naturalizing Semantics.

    ERIC Educational Resources Information Center

    Sullivan, Arthur

    2000-01-01

    Investigates conceptual barriers prevalent in the works of both proponents and opponents of semantic naturalism. Searches for a tenable definition of naturalism according to which one can be a realist, a non-reductionist, and a naturalist about semantic content. (Author/VWL)

  20. Rational Mechanisms and Natural Mathematics

    Microsoft Academic Search

    Vaughan R. Pratt

    1995-01-01

    Chu spaces have found applications in computer science, mathematics, and physics. They enjoy a useful categorical duality analogous to that of lattice theory and projective geometry. As natural mathematics Chu spaces borrow ideas from the natural sciences, particularly physics, while as rational mechanics they cast Hamiltonian mechanics in terms of the interaction of body and mind. This paper addresses the

  1. Natural gas monthly, October 1991

    SciTech Connect

    Not Available

    1991-11-05

    The Natural Gas Monthly (NGM) is prepared in the Data Operations Branch of the Reserves and Natural Gas Division, Office of Oil and Gas, Energy Information Administration (EIA), US Department of Energy (DOE). The NGM highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. The data in this publication are collected on surveys conducted by the EIA to fulfill its responsibilities for gathering and reporting energy data. Some of the data are collected under the authority of the Federal Energy Regulatory Commission (FERC), an independent commission within the DOE, which has jurisdiction primarily in the regulation of electric utilities and the interstate natural gas industry. Geographic coverage is the 50 States and the District of Columbia. 16 figs., 33 tabs.

  2. Natural products and caries prevention.

    PubMed

    Cheng, Lei; Li, Jiyao; He, Libang; Zhou, Xuedong

    2015-01-01

    Dental caries is considered as the most common polymicrobial oral disease in the world. With the aim of developing alternative approaches to reduce or prevent the decay, numerous papers showed the potential anticaries activity of a number of natural products. The natural products with anticaries effects are selected from e.g. food, beverages, flowers or traditional herbs. Most of the effective components are proven to be polyphenol compounds. Many of the natural products are studied as antibacterial agents, while some of them are found to be effective in shifting the de-/remineralization balance. However, the mechanisms of the anticaries effects are still unclear for most of the natural products. In the future, more efforts need to be made to seek novel effective natural products via in vitro experiment, animal study and in situ investigations, as well as to enhance their anticaries effects with the help of novel technology like nanotechnology. PMID:25871417

  3. Natural gas monthly - January 1996

    SciTech Connect

    NONE

    1996-01-01

    This highlight discusses changes in natural gas supply, demand, and prices for the first three quarters of 1995 (January thru September) compared to the same periods in 1993 and 1994. Production for the first three quarters of 1995 lagged year-earlier levels while natural gas consumption has continued a steady upward movement. Total U.S. natural gas production through the first three quarters at 14.1 trillion cubic feet, was less than 1 percent below the 1994 period, but remained well ahead of the comparable 1993 period. The three leading producing States (Texas, Louisiana, and Oklahoma) contributed nearly 70 percent of the total. Natural gas consumption totaled 16.0 trillion cubic feet for the first three quarters, 4 percent above the same period in 1994. Net imports of natural gas reached 2.0 trillion cubic feet by the end of the third quarter 1995 and accounted for nearly 13 percent of total consumption during this period.

  4. Natural antibodies to glycans.

    PubMed

    Bovin, N V

    2013-07-01

    A wide variety of so-called natural antibodies (nAbs), i.e. immunoglobulins generated by B-1 cells, are directed to glycans. nAbs to glycans can be divided in three groups: 1) conservative nAbs, i.e. practically the same in all healthy donors with respect to their epitope specificity and level in blood; 2) allo-antibodies to blood group antigens; 3) plastic antibodies related to the first or the second group but discussed separately because their level changes considerably during diseases and some temporary conditions, in particular inflammation and pregnancy. Antibodies from the third group proved to be prospective markers of a number of diseases, whereas their unusual level (below or above the norm) is not necessarily the consequence of disease/state. Modern microarrays allowed the determination of the human repertoire, which proved to be unexpectedly broad. It was observed that the content of some nAbs reaches about 0.1% of total immunoglobulins. Immunoglobulins of M class dominate for most nAbs, constituting up to 80-90%. Their affinity (to a monovalent glycan, in KD terms) were found to be within the range 10(-4)-10(-6) M. Antibodies to Gal?1-3GlcNAc (Le(C)), 4-HSO3Gal?1-4GalNAc (4'-O-SuLN), Fuc?1-3GlcNAc, Fuc?1-4GlcNAc, GalNAc?1-3Gal (Adi), Gal?1-4Gal?1-4Glc (P(k)), Gal?1-4Gal?1-4GlcNAc (P1), GlcNAc?-terminated glycans, and hyaluronic acid should be noted among the nAbs revealed and studied during the last decade. At the same time, a kind of "taboo" is observed for a number of glycans: antibodies to Le(X) and Le(Y), and almost all gangliosides have not been observed in healthy persons. Many of the revealed nAbs were directed to constrained inner (core) part of glycan, directly adjoined to lipid of cell membrane or protein. The biological function of these nAbs remains unclear; for anti-core antibodies, a role of surveillance on appearance of aberrant, especially cancer, antigens is supposed. The first data related to oncodiagnostics based on quantitation of anti-glycan nAbs are reported. PMID:24010841

  5. Natural gas pipeline technology overview.

    SciTech Connect

    Folga, S. M.; Decision and Information Sciences

    2007-11-01

    The United States relies on natural gas for one-quarter of its energy needs. In 2001 alone, the nation consumed 21.5 trillion cubic feet of natural gas. A large portion of natural gas pipeline capacity within the United States is directed from major production areas in Texas and Louisiana, Wyoming, and other states to markets in the western, eastern, and midwestern regions of the country. In the past 10 years, increasing levels of gas from Canada have also been brought into these markets (EIA 2007). The United States has several major natural gas production basins and an extensive natural gas pipeline network, with almost 95% of U.S. natural gas imports coming from Canada. At present, the gas pipeline infrastructure is more developed between Canada and the United States than between Mexico and the United States. Gas flows from Canada to the United States through several major pipelines feeding U.S. markets in the Midwest, Northeast, Pacific Northwest, and California. Some key examples are the Alliance Pipeline, the Northern Border Pipeline, the Maritimes & Northeast Pipeline, the TransCanada Pipeline System, and Westcoast Energy pipelines. Major connections join Texas and northeastern Mexico, with additional connections to Arizona and between California and Baja California, Mexico (INGAA 2007). Of the natural gas consumed in the United States, 85% is produced domestically. Figure 1.1-1 shows the complex North American natural gas network. The pipeline transmission system--the 'interstate highway' for natural gas--consists of 180,000 miles of high-strength steel pipe varying in diameter, normally between 30 and 36 inches in diameter. The primary function of the transmission pipeline company is to move huge amounts of natural gas thousands of miles from producing regions to local natural gas utility delivery points. These delivery points, called 'city gate stations', are usually owned by distribution companies, although some are owned by transmission companies. Compressor stations at required distances boost the pressure that is lost through friction as the gas moves through the steel pipes (EPA 2000). The natural gas system is generally described in terms of production, processing and purification, transmission and storage, and distribution (NaturalGas.org 2004b). Figure 1.1-2 shows a schematic of the system through transmission. This report focuses on the transmission pipeline, compressor stations, and city gates.

  6. Natural electromagnetic waveguide structures based on myelin sheath in the neural system

    E-print Network

    Jiongwei Xue; Shengyong Xu

    2012-10-08

    The saltatory propagation of action potentials on myelinated axons is conventionally explained by the mechanism employing local circuit ionic current flows between nodes of Ranvier. Under this framework, the myelin sheath with up to 100 layers of membrane only serves as the insulating shell. The speed of action potentials is measured to be as fast as 100 m/s on myelinated axons, but ions move in fluids at just 100 nm/s in a 1 V/m electric field. We show here the action potentials, in the form of electromagnetic (EM) pulses, can propagate in natural EM waveguide structures formed by the myelin sheath merged in fluids. The propagation time is mainly cost on the duration for triggering EM pulses at nodes of Ranvier. The result clearly reveals the evolution of axons from the unmyelinated to the myelinated, which has remarkably enhanced the propagation efficiency by increasing the thickness of myelin sheath.

  7. Natural gas monthly, February 1998

    SciTech Connect

    NONE

    1998-02-01

    This issue of the Natural Gas Monthly (NGM) presents the most recent estimates of natural gas data from the Energy Information Administration. Estimates extend through February 1998 for many data series, and through November 1997 for most natural gas prices. Highlights of the natural gas data contained in this issue are: Preliminary estimates for January and February 1998 show that dry natural gas production, net imports, and consumption are all within 1 percent of their levels in 1997. Warmer-than-normal weather in recent months has resulted in lower consumption of natural gas by the residential sector and lower net withdrawals of gas from under round storage facilities compared with a year ago. This has resulted in an estimate of the amount of working gas in storage at the end of February 1998 that is 18 percent higher than in February 1997. The national average natural gas wellhead price is estimated to be $3.05 per thousand cubic feet in November 1997, 7 percent higher than in October. The cumulative average wellhead price for January through November 1997 is estimated to be $2.42 per thousand cubic feet, 17 percent above that of the same period in 1996. This price increase is far less than 36-percent rise that occurred between 1995 and 1996. 6 figs., 26 tabs.

  8. POLMEROS EM SUPERFCIES Polmeros adsorvidos na superfcies de partculas

    E-print Network

    Loh, Watson

    POLÍMEROS EM SUPERFÍCIES Polímeros adsorvidos na superfícies de partículas coloidais Polímeros em interfaces líquidas Polímeros em interfaces sólidas #12;Polímeros em solução - Teoria de Flory-Hugghins #12;Polímeros em solução - Teoria de Flory-Hugghins Gm = kT(1ln1 + 2/N ln2 + 12) 1 = solvente 2 = polímero (Gm

  9. Random swap EM algorithm for Gaussian mixture models Qinpei Zhao

    E-print Network

    Joensuu, University of

    Random swap EM algorithm for Gaussian mixture models Qinpei Zhao , Ville Hautamäki, Ismo. Borgefors Keywords: Expectation maximization Random swap EM Gaussian mixture model Split and merge EM Genetic-based EM Data clustering a b s t r a c t Expectation maximization (EM) algorithm is a popular way

  10. CURSO DE PS-GRADUAO EM ENGENHARIA E TECNOLOGIA ESPACIAIS

    E-print Network

    CURSO DE PÓS-GRADUAÇÃO EM ENGENHARIA E TECNOLOGIA ESPACIAIS ÁREA DE CONCENTRAÇÃO EM CIÊNCIA E, França, 2003 #12;2 CURSO DE PÓS-GRADUAÇÃO EM ENGENHARIA E TECNOLOGIA ESPACIAIS ÁREA DE CONCENTRAÇÃO EM para o Mestrado (*) CMS-207-4 Técnicas Experimentais em Ciência dos Materiais I CMS-300-4 Mecânica

  11. Crude oil and natural gas pricing. Chapters 300 to 499: natural gas liquids, natural gas

    SciTech Connect

    Kelly, P.D.

    1980-01-01

    This text analyzes the federal statutes and regulations that affect the pricing and allocation of crude oil, natural gas, and natural gas liquids. It does not cover refined products or imported crude oil except where necessary to place major decisions in historical context. Chapter 300 concerns natural gas liquids. For historical rather than logical reasons, these are regulated as an offshoot of crude oil controls rather than as a by-product of natural gas production. In December 1979, the Economic Regulatory Administration (ERA) deregulated butane and natural gasoline. However, it did not amend 10 CFR 212.161-212.173, and it did not deregulate propane or propane mixtures. Decontrol will be covered in the first update to this book. Chapters 400 to 468 concern natural gas. Although a great deal of attention has been focused on the Natural Gas Policy Act (NGPA), there has been no satisfactory description of the extent to which the Natural Gas Act (NGA; passed in 1938 and amended by the Phillips decision in 1954) still applies. This is quite a problem, since the NGPA is written in vague terms that encourage producers to disregard the NGA. The problem is compounded by the Federal Power Commission's (FPC) approach to regulatory development, which has scattered crucial regulations throughout 18 CFR. All Federal Energy Regulatory Commission (FERC) natural gas production regulations should be repealed, arranged into a systematic grouping, and reissued in a consolidated subpart of 18 CFR. Shortly after the publication of this text, the author will petition the FERC to commence a rulemaking proceeding to that effect. Chapters 480 to 498 will cover the use of natural gas. These chapters will be issued in the first revision to this text as general summaries since the programs do not directly affect gas producers.

  12. Natural Product Xn on matrices

    E-print Network

    W. B. Vasantha Kandasamy; Florentin Smarandache

    2012-02-20

    This book has eight chapters. The first chapter is introductory in nature. Polynomials with matrix coefficients are introduced in chapter two. Algebraic structures on these polynomials with matrix coefficients is defined and described in chapter three. Chapter four introduces natural product on matrices. Natural product on super matrices is introduced in chapter five. Super matrix linear algebra is introduced in chapter six. Chapter seven claims only after this notion becomes popular we can find interesting applications of them. The final chapter suggests over 100 problems some of which are at research level.

  13. The Nature of US Natural Hazards Research, 1988-2008

    NASA Astrophysics Data System (ADS)

    Hagelman, R., III

    2009-04-01

    Numerous academic disciplines have contributed to the body of published research on natural hazards and disasters. Geologists, engineers, geographers, and sociologists have participated since the topic first emerged as a formal research agenda in the early 1950s. In more recent decades, psychologists, political scientists, economists, historians, archeologists, anthropologists, architects, computer scientists, and artists have added to our understanding of environmental risk, hazard, and disaster. When examined in-print, what are the discipline-demographics of natural hazards? Who contributes and who tends to have the greater influence on scholarly discourse related to the topic? Are there clear trends in methods, techniques, or paradigmatic approaches? To what degree does this inherently interdisciplinary topic render interdisciplinary research? This paper will present initial findings from a larger data set on natural hazards and social science research. We will describe the discipline-demographics of natural hazards scholarship by examining college-level texts, peer-reviewed journal publications, federally-funded reports, and federally-funded research grants relating to natural hazards or disasters from 1988 to 2008. The citation frequency of sampled references will also be examined as a surrogate for influence on the scholarly discourse of natural hazards. In this paper, we will focus attention on the contributions of social scientists during this period, including an assessment of temporal trends relative to specific disaster events.

  14. Darwin's explanation of design: from natural theology to natural selection.

    PubMed

    Ayala, Francisco J

    2010-08-01

    Copernicus, Galileo, Newton and other physical scientists ushered in a conception of the universe as matter in motion governed by natural laws. Their discoveries brought about a fundamental revolution, namely a commitment to the postulate that the universe obeys immanent laws that can account for natural phenomena. The workings of the universe were brought into the realm of science: explanation through natural laws. Darwin completed the Copernican revolution by extending it to the living world. Darwin demonstrated the evolution of organisms. More important yet is that he discovered natural selection, the process that explains the "design" of organisms. The adaptations and diversity of organisms, the origin of novel and complex species, even the origin of mankind, could now be explained by an orderly process of change governed by natural laws. The origin of species and the exquisite features of organisms had previously been explained as special creations of an Omniscient God. Darwin brought them into the domain of science. Evolution is a creative process that produces genuine novelty. The creative power of evolution arises from a distinctive interaction between chance and necessity, between random mutation and natural selection. PMID:19800418

  15. Lietuvos teritorijos žem?s plutos deformacij? ir seismotektoninio potencialo ryšys

    NASA Astrophysics Data System (ADS)

    Zakarevi?ius, Algimantas; Stanionis, Arminas; Levinskait?, Daiva

    2010-01-01

    Lietuvoje yra statini?, kelian?i? ekologinio pavojaus gr?sm? (Ignalinos atomin? elektrin?, Mažeiki? naftos perdirbimo ?mon?, chemijos gamyklos Jonavoje bei K?dainiuose ir pan.). Seisminiai ?vykiai gali sutrikdyti ši? ?moni? veikl? ir net lemti didel? pavoj? aplinkai, t. y. gali b?ti sukelta didel? aplinkos tarša chemin?mis bei radioaktyviosiomis medžiagomis. Seisminius ?vykius lemia teritorijos seismotektoninis potencialas. Seismotektoninis potencialas ir Žem?s plutos deformacijos yra tarpusavyje susij? rei\\vskiniai, kuriuos sukelia dažnai tie patys giluminiai procesai Žem?s gelm?se. Žem?s plutos deformacij? tyrimas yra vienas iš informacijos šaltini? prognozuojant teritorijos seismotektonin? aktyvum?. Straipsnyje nagrin?jamos Žem?s plutos horizontaliosios deformacijos, nustatomi Žem?s plutos ?tempi? poky?iai Lietuvos teritorijoje pagal GPS matavim? duomenis. Atlikus tyrimus pagal pateikiam? Žem?s plutos horizontali?j? deformacij? ir ?tempi? tyrimo metodik?, gauti nauji horizontali?j? deformacij? charakteristik? bei ?tempi? poky?i? rezultatai ir nustatytos j? s?sajos su seismotektoniniu potencialu.

  16. Servidor tem direito a licena para acompanha cnjuge aprovado em concurso em outro estado

    E-print Network

    Floeter, Sergio Ricardo

    Servidor tem direito a licença para acompanha cônjuge aprovado em concurso em outro estado O servidor público tem direito a licença para acompanhamento do cônjuge se este for aprovado em concurso Federal da 4ª Região (TRF4), o tribunal concedeu apenas o direito a licença não-remunerada, mas não

  17. Noninvasive monitoring of CO2 sequestration sites using airborne EM technology

    NASA Astrophysics Data System (ADS)

    Kaminski, V.; Harbert, W. P.; Legault, J. M.

    2009-12-01

    Usage of conventional airborne EM methods for studies related to CO2 sequestration reservoirs have been restricted up to date due to depth and system noise limitations. Recently a family of new EM systems was developed and launched in Canada, allowing superior depth of investigation to that of the conventional EM systems. Depending on the resistivity of the area such systems are capable of recording response from targets emplaced at the depths of up to 2 kilometers below surface. These systems are powered by natural (telluric and storm lightning) EM fields and are particularly sensitive to contrast in electrical properties of the subsurface, rather than absolute values of the conductivities, which make these systems suitable for usage in both resistive and conductive environments, including the subsurface identification and mapping of gas, hydrocarbons, liquid CO2 and supercritical CO2. Based on the well log data collected at one of the proposed sequestration sites, forward modeling has been carried out in order to study which changes in electrical properties of reservoir rocks before and after the introduction of CO2 to the sequestration reservoir are sufficient to provide enough contrast so they become detectable by EM systems. The results of the modeling showed that under favourable conditions it is possible to differentiate between brine-filled reservoirs versus CO2-filled reservoir at a depth of more than 1 kilometer with the main controlling parameters being reservoir effective porosity, thickness, Total Dissolved Solids (TDS) content of the pore-filling fluid and CO2 saturation after the injection. EM surveying can play a crucial role in studies of moderately deep-seated reservoirs, specifically can assist in monitoring CO2 injection and migration and can provide some additional data regarding the CO2 saturation level. The benefits of application of these new EM systems compared with 3D reflection seismic, VSP, gravity, and other geophysical methods will also be discussed.

  18. Disperses leo em gua (o/w) ou gua em leo (w/o) Fase contnua / fase dispersa.

    E-print Network

    Loh, Watson

    Emulsões Dispersões óleo em água (o/w) ou água em óleo (w/o) Fase contínua / fase dispersa. Agente solubilidade da fase dispersa em gotas menores - "Ostwald Ripening" ­ mais pronunciado em fases mais miscíveis) ­ SLES/betaína (b)- inverso #12;3. Barreira eletrostática ou estérica Repulsão eletrostática em

  19. PATRIMONIO NATURAL DE GRANADA: MANANTIALES

    E-print Network

    Castillo, Antonio

    ). "Patrimonio natural de Granada: manantiales". Cdrom interactivo. D.L.: GR- 957/03. ISBN: 84-607-7906-8 La esos nombres son conocidos. En este cdrom se han agrupado en las siguientes categorías: pilares

  20. SUSTAINABILITY REPORTING NATURAL RESOURCES DEFENSE

    E-print Network

    Qian, Ning

    RELEVANCE/CONTEXT 4 HISTORY OF SUSTAINABILITY REPORTING 4 ORGANIZATIONAL PROFILE 7 METHODOLOGY 8SUSTAINABILITY REPORTING AND THE NATURAL RESOURCES DEFENSE COUNCIL AUGUST 2012 Capstone Team FINDINGS AND DISCUSSION 11 FINDINGS FROM INTERVIEWS 11 SUSTAINABILITY FRAMEWORK ASSESSMENT 12

  1. Basic taxation of natural resources

    SciTech Connect

    Not Available

    1986-01-01

    This book contains 19 selections. Some of the titles are: Introduction to taxation and natural resources; The economic interest concept; Oil and gas exploration and development expenditures; Percentage depletion for oil and gas; and Mine reclamation and closing expenses.

  2. Natural Human-Computer Interaction

    NASA Astrophysics Data System (ADS)

    D'Amico, Gianpaolo; Del Bimbo, Alberto; Dini, Fabrizio; Landucci, Lea; Torpei, Nicola

    Research work in relation to Natural Human-Computer Interaction concerns the theorization and development of systems that understand and recognize human communicative actions in order to engage people in a dialogue between them and their surroundings.

  3. Sepbox Technique in Natural Products

    PubMed Central

    Bhandari, M; Bhandari, Anil; Bhandari, A

    2011-01-01

    Natural compounds still play an increasingly important role in many areas of research and development. Their structural diversity is enhanced by the synthetic potential of combinatorial chemistry. Fractionation and separation of samples obtained from nature remain time-consuming, tedious and extremely expensive even though the assays for testing these samples have become faster and more cost-effective thanks to advanced high-throughput screening (HTS) processes. Today, sepbox is the standard technology used for separating compounds from natural resources. Fractionations and separation of samples obtained from nature remain very difficult. Automation of sample preparation therefore has great economic potential. The unique sepbox concept allows processing sample automatically and will make up to 30 times faster than by using a conventional process. PMID:21897663

  4. Natural Gas Monthly August 1998

    SciTech Connect

    NONE

    1998-08-01

    The Natural Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information. Explanatory notes supplement the information found in tables of the report. A description of the data collection surveys that support the NGM is provided. A glossary of the terms used in this report is also provided to assist readers in understanding the data presented in this publication.

  5. Learning the Nature of Science

    NSDL National Science Digital Library

    Susan Musante (American Institute of Biological Sciences; )

    2005-10-01

    This Eye on Education column, published in BioScience, stresses the importance of teaching the nature of science to students and provides examples of ways in which undergraduate educators are doing so.

  6. BILL BELLEVILLE Nature Writer & Filmmaker

    E-print Network

    Marques, Oge

    FAU Harbor Branch Drugs from the Sea: Marine Natural Products as Potential Treatments for Pancreatic Cancer JAN 21 JAN 28 a JOHN ENGLANDER Oceanographer & Author Peace of Blue: Water Journeys FEB 4 a MEGAN

  7. Toward understanding natural language directions

    E-print Network

    Kollar, Thomas Fleming

    Speaking using unconstrained natural language is an intuitive and flexible way for humans to interact with robots. Understanding this kind of linguistic input is challenging because diverse words and phrases must be mapped ...

  8. Natural Products as Aromatase Inhibitors

    PubMed Central

    Balunas, Marcy J.; Su, Bin; Brueggemeier, Robert W.; Kinghorn, A. Douglas

    2010-01-01

    With the clinical success of several synthetic aromatase inhibitors (AIs) in the treatment of postmenopausal estrogen receptor-positive breast cancer, researchers have also been investigating also the potential of natural products as AIs. Natural products from terrestrial and marine organisms provide a chemically diverse array of compounds not always available through current synthetic chemistry techniques. Natural products that have been used traditionally for nutritional or medicinal purposes (e.g., botanical dietary supplements) may also afford AIs with reduced side effects. A thorough review of the literature regarding natural product extracts and secondary metabolites of plant, microbial, and marine origin that have been shown to exhibit aromatase inhibitory activity is presented herein. PMID:18690828

  9. Breastfeeding Following a Natural Disaster

    MedlinePLUS

    Breastfeeding Following a Natural Disaster The information below will help you determine whether certain exposures that a ... advice from your health care provider. Why is breastfeeding good for my baby? There are many benefits ...

  10. Nature Web Focus: Ocean Genomics

    NSDL National Science Digital Library

    2003-01-01

    The August 28, 2003 issue of the journal Nature presented a collection of reports that, "along with other analysis of key components of the ocean's food web, highlights the significance of genome sequences from the sea." This Web Focus provides access to these reports free of charge to any reader. The reports focus particularly on marine phytoplankton. The site also includes links to related articles from the Nature archives, but viewing these reports requires a paid subscription.

  11. Enhanced Natural Attenuation of MTBE

    Microsoft Academic Search

    Mario Schirmer; Marion Martienssen

    MTBE contamination in groundwater is an increasing environmental problem and treatment costs using\\u000a conventional remediation technologies will increase if water is contaminated by MTBE. Generally, natural\\u000a attenuation (NA) and enhanced natural attenuation (ENA) are possible low-cost alternatives to conventional\\u000a techniques. Since biodegradation of MTBE is comparably slow under field conditions and often limited by\\u000a the environmental conditions, optimizing these conditions

  12. Afghanistan's energy and natural resources

    SciTech Connect

    Balcome-Rawding, R.; Porter, K.C.

    1989-10-01

    This study provides a resource perspective from which to better plan the necessary steps toward the viable reconstruction and economic development of post war Afghanistan. The vast availability of natural resources affords the opportunity to formulate a framework upon which Afghanistan can grow and prosper in the future. The paper includes the following sections: Historical Overview: Thwarted Opportunities; Natural Resources: A Survey of Possibilities; The Future: Post War Rehabilitation and Reconstruction; and Conclusions: Future Energy Sources.

  13. Investigating Natural Selection: Elementary School

    NSDL National Science Digital Library

    2010-01-01

    This lesson plan is designed for fourth and fifth grade students learning about natural selection. The class will investigate the predator-prey relationship as an example of how natural selection occurs in a population. Students will work in groups of three or four and observe how predators select their prey, and how this affects the subsequent populations of a species. The concept of camouflage is also covered in the material. This lesson is designed to take about sixty minutes of class time.

  14. Removal of sulfur compounds from utility pipelined synthetic natural gas using modified activated carbons

    Microsoft Academic Search

    Hong Cui; Scott Q. Turn; Mark A. Reese

    2009-01-01

    Synthetic natural gas (SNG), which is produced from petroleum and distributed via pipeline in Honolulu by The Gas Company, was analyzed using a gas chromatograph equipped with a sulfur chemiluminescence detector (GC\\/SCD). Hydrogen sulfide (H2S), methyl mercaptan (MM), ethyl mercaptan (EM), dimethylsulfide (DMS), dimethyl disulfide (DMDS), tetrahydrothiophene (THT), ethyl disulfide (EDS), and one unidentified compound (UN1) were detected. Among these

  15. US Vulnerability to Natural Disasters

    NASA Astrophysics Data System (ADS)

    van der Vink, G.; Apgar, S.; Batchelor, A.; Carter, C.; Gail, D.; Jarrett, A.; Levine, N.; Morgan, W.; Orlikowski, M.; Pray, T.; Raymar, M.; Siebert, A.; Shawa, T. W.; Wallace, C.

    2002-05-01

    Natural disasters result from the coincidence of natural events with the built environment. Our nation's infrastructure is growing at an exponential rate in many areas of high risk, and the Federal government's liability is increasing proportionally. By superimposing population density with predicted ground motion from earthquakes, historical hurricane tracks, historical tornado locations, and areas within the flood plain, we are able to identify locations of high vulnerability within the United States. We present a comprehensive map of disaster risk for the United States that is being produced for the Senate Natural Hazards Caucus. The map allows for the geographic comparison of natural disaster risk with past disaster declarations, the expenditure of Federal dollars for disaster relief, population increase, and variations of GDP. Every state is vulnerable to natural disasters. Although their frequency varies considerably, the annualized losses for disaster relief from hurricanes, earthquakes, and floods are approximately equivalent. While fast-growing states such as California and Florida remain highly vulnerable, changes in the occurrence of natural events combined with population increases are making areas such as Texas, North Carolina, and the East Coast increasingly vulnerable.

  16. Nature Affinity and the Human Conditions

    Microsoft Academic Search

    Dave M. Augeri

    Human beings have a natural affinity for Nature. Research indicates Nature has positive effects on our physical and psychological well-being, changes our body chemistry and makes humans healthier and happier, but physical and psychological illnesses are increasing with loss of Nature. Nature is an integral part of our physiological, psychological, genetic, and emotional make-up. Human health and the healing of

  17. Transformation & Uncertainty. Some Thoughts on Quantum Probability Theory, Quantum Statistics, and Natural Bundles

    NASA Astrophysics Data System (ADS)

    Janssens, Bas

    2010-11-01

    This PHD thesis is concerned with uncertainty relations in quantum probability theory, state estimation in quantum stochastics, and natural bundles in differential geometry. After some comments on the nature and necessity of decoherence in open systems and its absence in closed ones, we prove sharp, state-independent inequalities reflecting the Heisenberg principle, the necessity of decoherence and the impossibility of perfect joint measurement. These bounds are used to judge how far a particular measurement is removed from the optimal one. We do this for a qubit interacting with the quantized EM field, continually probed using homodyne detection. We calculate to which extent this joint measurement is optimal. We then propose a two-step strategy to determine the (possibly mixed) state of n identically prepared qubits, and prove that it is asymptotically optimal in a local minimax sense, using `Quantum Local Asymptotic Normality' for qubits. We propose a physical implementation of QLAN, based on interaction with the quantized EM field. In differential geometry, a bundle is called `natural' if diffeomorphisms of the base lift to automorphisms of the bundle. We slightly extend this notion to `infinitesimal naturality', requiring only vector fields (infinitesimal diffeomorphisms) to lift. We classify these bundles. Physical fields that transform under (infinitesimal) space-time transformations must be described in terms of (infinitesimally) natural bundles. All spin structures are infinitesimally natural. Our framework thus encompasses Fermionic fields, for which the notion of a natural bundle is too restrictive. Interestingly, generalized spin structures (e.g. spin-c structures) are not always infinitesimally natural. We classify the ones that are. Depending on the gauge group at hand, this can significantly reduce the number of allowed space-time topologies.

  18. SuperNatural: a searchable database of available natural compounds.

    PubMed

    Dunkel, Mathias; Fullbeck, Melanie; Neumann, Stefanie; Preissner, Robert

    2006-01-01

    Although tremendous effort has been put into synthetic libraries, most drugs on the market are still natural compounds or derivatives thereof. There are encyclopaedias of natural compounds, but the availability of these compounds is often unclear and catalogues from numerous suppliers have to be checked. To overcome these problems we have compiled a database of approximately 50,000 natural compounds from different suppliers. To enable efficient identification of the desired compounds, we have implemented substructure searches with typical templates. Starting points for in silico screenings are about 2500 well-known and classified natural compounds from a compendium that we have added. Possible medical applications can be ascertained via automatic searches for similar drugs in a free conformational drug database containing WHO indications. Furthermore, we have computed about three million conformers, which are deployed to account for the flexibilities of the compounds when the 3D superposition algorithm that we have developed is used. The SuperNatural Database is publicly available at http://bioinformatics.charite.de/supernatural. Viewing requires the free Chime-plugin from MDL (Chime) or Java2 Runtime Environment (MView), which is also necessary for using Marvin application for chemical drawing. PMID:16381957

  19. SuperNatural: a searchable database of available natural compounds

    PubMed Central

    Dunkel, Mathias; Fullbeck, Melanie; Neumann, Stefanie; Preissner, Robert

    2006-01-01

    Although tremendous effort has been put into synthetic libraries, most drugs on the market are still natural compounds or derivatives thereof. There are encyclopaedias of natural compounds, but the availability of these compounds is often unclear and catalogues from numerous suppliers have to be checked. To overcome these problems we have compiled a database of ?50?000 natural compounds from different suppliers. To enable efficient identification of the desired compounds, we have implemented substructure searches with typical templates. Starting points for in silico screenings are about 2500 well-known and classified natural compounds from a compendium that we have added. Possible medical applications can be ascertained via automatic searches for similar drugs in a free conformational drug database containing WHO indications. Furthermore, we have computed about three million conformers, which are deployed to account for the flexibilities of the compounds when the 3D superposition algorithm that we have developed is used. The SuperNatural Database is publicly available at . Viewing requires the free Chime-plugin from MDL (Chime) or Java2 Runtime Environment (MView), which is also necessary for using Marvin application for chemical drawing. PMID:16381957

  20. Natural time analysis of critical phenomena: The case of pre-fracture electromagnetic emissions

    SciTech Connect

    Potirakis, S. M. [Department of Electronics, Technological Education Institute (TEI) of Piraeus, 250 Thivon and P. Ralli, Aigaleo, Athens GR-12244 (Greece)] [Department of Electronics, Technological Education Institute (TEI) of Piraeus, 250 Thivon and P. Ralli, Aigaleo, Athens GR-12244 (Greece); Karadimitrakis, A. [Department of Physics, Section of Electronics, Computers, Telecommunications and Control, University of Athens, Panepistimiopolis, Zografos, Athens GR-15784 (Greece)] [Department of Physics, Section of Electronics, Computers, Telecommunications and Control, University of Athens, Panepistimiopolis, Zografos, Athens GR-15784 (Greece); Eftaxias, K. [Department of Physics, Section of Solid State Physics, University of Athens, Panepistimiopolis, Zografos, Athens GR-15784 (Greece)] [Department of Physics, Section of Solid State Physics, University of Athens, Panepistimiopolis, Zografos, Athens GR-15784 (Greece)

    2013-06-15

    Criticality of complex systems reveals itself in various ways. One way to monitor a system at critical state is to analyze its observable manifestations using the recently introduced method of natural time. Pre-fracture electromagnetic (EM) emissions, in agreement to laboratory experiments, have been consistently detected in the MHz band prior to significant earthquakes. It has been proposed that these emissions stem from the fracture of the heterogeneous materials surrounding the strong entities (asperities) distributed along the fault, preventing the relative slipping. It has also been proposed that the fracture of heterogeneous material could be described in analogy to the critical phase transitions in statistical physics. In this work, the natural time analysis is for the first time applied to the pre-fracture MHz EM signals revealing their critical nature. Seismicity and pre-fracture EM emissions should be two sides of the same coin concerning the earthquake generation process. Therefore, we also examine the corresponding foreshock seismic activity, as another manifestation of the same complex system at critical state. We conclude that the foreshock seismicity data present criticality features as well.

  1. Em 1959 cursava o terceiro colegial no Julinho em Porto Alegre, onde recebi o folheto "Voc tem pensado em fsica?" que mais tarde soube ter sido produzido

    E-print Network

    dos Santos, C.A.

    Em 1959 cursava o terceiro colegial no Julinho em Porto Alegre, onde recebi o folheto "Você tem pensado em física?" que mais tarde soube ter sido produzido pelo Darcy. Estava indeciso entre física e som e a cores a bela tarde em que, dentro de um bonde Petrópolis, passando pela Protásio diante do

  2. letters to nature NATURE |VOL 405 |8 JUNE 2000 |www.nature.com 679

    E-print Network

    Group, Barberton Mountain Land, South Africa. Nature 314, 530±532 (1985). 4. Awramik, S. M., Schopf, J±160 (Columbia, New York, 1994). 8. Stetter, K. O. in Evolution of Hydrothermal Ecosystems on Earth (and Mars

  3. Revealing Nature’s Synthetic Potential Through the Study of Ribosomal Natural Product Biosynthesis

    PubMed Central

    Dunbar, Kyle L.; Mitchell, Douglas A.

    2013-01-01

    Ribosomally synthesized posttranslationally modified peptides (RiPPs) are a rapidly growing class of natural products with diverse structures and activities. In recent years, a great deal of progress has been made in elucidating the biosynthesis of various RiPP family members. As with the study of nonribosomal peptide and polyketide biosynthetic enzymes, these investigations have led to the discovery of entirely new biological chemistry. With each unique enzyme investigated, a more complex picture of Nature’s synthetic potential is revealed. This review focuses on recent reports (since 2008) that have changed the way that we think about ribosomal natural product biosynthesis and the enzymology of complex bond-forming reactions. PMID:23286465

  4. letters to nature NATURE |VOL 407 |21 SEPTEMBER 2000 |www.nature.com 409

    E-print Network

    Hill, Chris

    . Smothers, J. F. & Henikoff, S. The HP1 chromo shadow domain binds a consensussequencepentamer. Curr. Biol. Biol. 135, 1427­1440 (1996). Supplementary information is available on Nature's World-Wide Web site

  5. letters to nature 898 NATURE |VOL 403 |24 FEBRUARY 2000 |www.nature.com

    E-print Network

    Gadsby, David

    type 1. Nature Genet. 15, 281±284 (1997). 12. The, I. et al. Rescue of a Drosophila NF1 mutant. & Zhong, Y. Requirement of Drosophila NF1 for activation of adenylyl cyclase by PACAP38-like neuropeptide

  6. O ESPAÇO DA UVA TRANSFORMADO EM AGRONEGÓCIO

    Microsoft Academic Search

    Mariza Cezira Campagner; Gervasio Castro de Rezende

    2008-01-01

    O presente artigo tem por objetivo apresentar algumas das redefinições do trabalho agrícola resultantes do processo de reestruturação do espaço da uva transformado em agronegócio, no qual se tem expandido o agronegócio de frutas tropicais. A metodologia está organizada em torno de atualização da pesquisa bibliográfica e as temáticas de interesse; realização de trabalhos na área de estudo. Conclui que

  7. CURSO DE PS-GRADUAO EM METEOROLOGIA

    E-print Network

    CURSO DE PÓS-GRADUAÇÃO EM METEOROLOGIA Coordenador Acadêmico Dirceu Luis Herdies Membros do Conselho de Curso Luis Gustavo Gonçalves de Gonçalves José Antonio Marengo Orsini Clóvis Angeli Sansigolo Innocentini, Ph.D., Univ. of Reading, 1986 #12;2 CURSO DE PÓS-GRADUAÇÃO EM METEOROLOGIA PROGRAMAÇÃO ANUAL DAS

  8. CURSO DE PS-GRADUAO EM METEOROLOGIA

    E-print Network

    CURSO DE PÓS-GRADUAÇÃO EM METEOROLOGIA Coordenadora Acadêmica Maria Paulete Pereira Martins Membros do Conselho de Curso Dirceu Luis Herdies Luis Gustavo Gonçalves de Gonçalves José Antonio Marengo., 1969 Valdir Innocentini, Ph.D., Univ. of Reading, 1986 #12;2 CURSO DE PÓS-GRADUAÇÃO EM METEOROLOGIA

  9. Natural Selection Promotes Antigenic Evolvability

    PubMed Central

    Graves, Christopher J.; Ros, Vera I. D.; Stevenson, Brian; Sniegowski, Paul D.; Brisson, Dustin

    2013-01-01

    The hypothesis that evolvability - the capacity to evolve by natural selection - is itself the object of natural selection is highly intriguing but remains controversial due in large part to a paucity of direct experimental evidence. The antigenic variation mechanisms of microbial pathogens provide an experimentally tractable system to test whether natural selection has favored mechanisms that increase evolvability. Many antigenic variation systems consist of paralogous unexpressed ‘cassettes’ that recombine into an expression site to rapidly alter the expressed protein. Importantly, the magnitude of antigenic change is a function of the genetic diversity among the unexpressed cassettes. Thus, evidence that selection favors among-cassette diversity is direct evidence that natural selection promotes antigenic evolvability. We used the Lyme disease bacterium, Borrelia burgdorferi, as a model to test the prediction that natural selection favors amino acid diversity among unexpressed vls cassettes and thereby promotes evolvability in a primary surface antigen, VlsE. The hypothesis that diversity among vls cassettes is favored by natural selection was supported in each B. burgdorferi strain analyzed using both classical (dN/dS ratios) and Bayesian population genetic analyses of genetic sequence data. This hypothesis was also supported by the conservation of highly mutable tandem-repeat structures across B. burgdorferi strains despite a near complete absence of sequence conservation. Diversification among vls cassettes due to natural selection and mutable repeat structures promotes long-term antigenic evolvability of VlsE. These findings provide a direct demonstration that molecular mechanisms that enhance evolvability of surface antigens are an evolutionary adaptation. The molecular evolutionary processes identified here can serve as a model for the evolution of antigenic evolvability in many pathogens which utilize similar strategies to establish chronic infections. PMID:24244173

  10. Fractal Nature of Solar Interior

    E-print Network

    Koushik Ghosh; Probhas Raychaudhuri

    2006-05-04

    Fractal method has been studied to understand the irregular and chaotic nature of any physical structure. Conventionally it is suggested that the solar interior is rigid in nature. Since solar neutrino flux is the indicator of the interior solar structure it is natural to study the solar neutrino flux source to find if the nuclear energy generation inside the sun is fractal in nature or not. At present there exist five solar neutrino experiments to detect neutrinos from the sun which can suggest which type of nuclear energy generation occurs inside the sun. Since we know that the solar atmosphere is irregular in nature many authors have studied this irregular nature by fractal analysis. In this regard we have studied solar neutrino flux data from 1) Homestake detector during the period from March, 1970 to April, 1994; 2) SAGE detector during the period from 1st January, 1990 to 31st December, 2000; 3) SAGE detector during the period from April, 1998 to December, 2001; 4) GALLEX detector during the period from May, 1991 to January, 1997; 5) GNO detector during the period from May, 1998 to December, 2001; 6) GALLEX-GNO detector (combined data) from May, 1991 to December, 2001; 7) average of the data from GNO and SAGE detectors during the period from May, 1998 to December, 2001; 8) 5-day-long samples from Super-Kamiokande-I detector during the period from June, 1996 to July,2001; 9) 10-day-long samples from Super-Kamiokande-I detector during the period from June,1996 to July,2001 and 10) 45-day-long samples from Super-Kamiokande-I detector during the period from June,1996 to July,2001 by fractal analysis and we have arrived at the conclusion that the solar neutrino flux data are fractal in nature.

  11. Imaging natural cognition in action?

    PubMed Central

    Gramann, Klaus; Ferris, Daniel P.; Gwin, Joseph; Makeig, Scott

    2014-01-01

    The primary function of the human brain is arguably to optimize the results of our motor actions in an ever-changing environment. Our cognitive processes and supporting brain dynamics are inherently coupled both to our environment and to our physical structure and actions. To investigate human cognition in its most natural forms demands imaging of brain activity while participants perform naturally motivated actions and interactions within a full three-dimensional environment. Transient, distributed brain activity patterns supporting spontaneous motor actions, performed in pursuit of naturally motivated goals, may involve any or all parts of cortex and must be precisely timed at a speed faster than the speed of thought and action. Hemodynamic imaging methods give information about brain dynamics on a much slower scale, and established techniques for imaging brain dynamics in all modalities forbid participants from making natural extensive movements so as to avoid intractable movement-related artifacts. To overcome these limitations, we are developing mobile brain/body imaging (MoBI) approaches to study natural human cognition. By synchronizing lightweight, high-density electroencephalographic (EEG) recording with recordings of participant sensory experience, body and eye movements, and other physiological measures, we can apply advanced data analysis techniques to the recorded signal ensemble. This MoBI approach enables the study of human brain dynamics accompanying active human cognition in its most natural forms. Results from our studies have provided new insights into the brain dynamics supporting natural cognition and can extend theories of human cognition and its evolutionary function — to optimize the results of our behavior to meet ever-changing goals, challenges, and opportunities. PMID:24076470

  12. A rede GÉANT e as tendências de desenvolvimento das novas redes de comunicação em fibra óptica [The GÉANT network and development trends of new communication networks over fiber optics

    Microsoft Academic Search

    Tiago Araújo; Jorge Costa; André Gonçalves; Ivo Rodrigues

    2010-01-01

    In this paper we will present the last generation of fiber optics communication networks. We introduce the main concepts related to the fiber optics, and then we show the results of the research made about the chosen case study: GÉANT – the European network to share scientific data. We focus on the network components, it structure and functionality, and also

  13. DESENVOLVIMENTO DE TECNOLOGIA PARA A FABRICAÇÃO DE DOCE EM MASSA COM ARAÇÁ-PÊRA (Psidium acutangulum D. C.) PARA O PEQUENO PRODUTOR Development of a technology for the processing of araça pera jam for small producers

    Microsoft Academic Search

    Grace Maria; Ferreira C. Wille; E. Freitas de Macedo; Maria Lucia Masson; Sônia Cachoeira Stertz; Jucineide Matos Lima

    Araça Pera (Psidium acutangulum D.C., Myrtaceae) is a native plant from the Amazon region. The fruit is very pulpy (yields 75.67% after peeling and seedling), has a delicate, pleasant flavor, a peel like fine leather, which has to be taken off for it is bitter. It presents excessive acid content to be pleasant when eaten raw (pH 2.77; free acidity

  14. 40 CFR 1065.715 - Natural gas.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...2014-07-01 2014-07-01 false Natural gas. 1065.715 Section 1065...Calibration Standards § 1065.715 Natural gas. (a) Except as specified in paragraph (b) of this section, natural gas for testing must meet the...

  15. 40 CFR 1065.715 - Natural gas.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...2011-07-01 2011-07-01 false Natural gas. 1065.715 Section 1065...Calibration Standards § 1065.715 Natural gas. (a) Except as specified in paragraph (b) of this section, natural gas for testing must meet the...

  16. 40 CFR 1065.715 - Natural gas.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...2013-07-01 2013-07-01 false Natural gas. 1065.715 Section 1065...Calibration Standards § 1065.715 Natural gas. (a) Except as specified in paragraph (b) of this section, natural gas for testing must meet the...

  17. 40 CFR 1065.715 - Natural gas.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...2012-07-01 2012-07-01 false Natural gas. 1065.715 Section 1065...Calibration Standards § 1065.715 Natural gas. (a) Except as specified in paragraph (b) of this section, natural gas for testing must meet the...

  18. TR-IIS-07-012 aEM: Targeted Aggressive

    E-print Network

    Chen, Sheng-Wei

    . (1997) proposed the parameterized EM (pEM) algorithm to accelerate EM for Bayesian Networks, and Luis and Leslie (1999) applied pEM for Mixtures of Gaussians. The pEM algorithm accelerates the convergence . They showed that pEM converges faster than EM and the convergence is guaranteed when 1 pEM

  19. Natural pigments and sacred art

    NASA Astrophysics Data System (ADS)

    Kelekian, Lena, ,, Lady

    2010-05-01

    Since the dawn of mankind, cavemen has expressed himself through art. The earliest known cave paintings date to some 32,000 years ago and used 4 colours derived from the earth. These pigments were iron oxides and known as ochres, blacks and whites. All pigments known by the Egyptians, the Greeks, the Romans and Renaissance man were natural and it was not until the 18th century that synthetic pigments were made and widely used. Until that time all art, be it sacred or secular used only natural pigments, of which the preparation of many have been lost or rarely used because of their tedious preparation. As a geologist, a mineralogist and an artist specializing in iconography, I have been able to rediscover 89 natural pigments extracted from minerals. I use these pigments to paint my icons in the traditional Byzantine manner and also to restore old icons, bringing back their glamour and conserving them for years to come. The use of the natural pigments in its proper way also helps to preserve the traditional skills of the iconographer. In the ancient past, pigments were extremely precious. Many took an exceedingly long journey to reach the artists, and came from remote countries. Research into these pigments is the work of history, geography and anthropology. It is an interesting journey in itself to discover that the blue aquamarines came from Afghanistan, the reds from Spain, the greens Africa, and so on. In this contribution I will be describing the origins, preparation and use of some natural pigments, together with their history and provenance. Additionally, I will show how the natural pigments are used in the creation of an icon. Being a geologist iconographer, for me, is a sacrement that transforms that which is earthly, material and natural into a thing of beauty that is sacred. As bread and wine in the Eucharist, water during baptism and oil in Holy Union transmit sanctification to the beholder, natural pigments do the same when one considers an icon. The iconographer uses earthly creations to create divine images: "Thine own of Thine own we offer unto Thee." (Byzantine Liturgy). Thus, by combining geology with art and religion, I can render homage to God through His creation by using minerals of the Planet Earth, as natural pigments in painting His image.

  20. Statistics of Natural Binaural Sounds

    PubMed Central

    M?ynarski, Wiktor; Jost, Jürgen

    2014-01-01

    Binaural sound localization is usually considered a discrimination task, where interaural phase (IPD) and level (ILD) disparities at narrowly tuned frequency channels are utilized to identify a position of a sound source. In natural conditions however, binaural circuits are exposed to a stimulation by sound waves originating from multiple, often moving and overlapping sources. Therefore statistics of binaural cues depend on acoustic properties and the spatial configuration of the environment. Distribution of cues encountered naturally and their dependence on physical properties of an auditory scene have not been studied before. In the present work we analyzed statistics of naturally encountered binaural sounds. We performed binaural recordings of three auditory scenes with varying spatial configuration and analyzed empirical cue distributions from each scene. We have found that certain properties such as the spread of IPD distributions as well as an overall shape of ILD distributions do not vary strongly between different auditory scenes. Moreover, we found that ILD distributions vary much weaker across frequency channels and IPDs often attain much higher values, than can be predicted from head filtering properties. In order to understand the complexity of the binaural hearing task in the natural environment, sound waveforms were analyzed by performing Independent Component Analysis (ICA). Properties of learned basis functions indicate that in natural conditions soundwaves in each ear are predominantly generated by independent sources. This implies that the real-world sound localization must rely on mechanisms more complex than a mere cue extraction. PMID:25285658

  1. Statistics of natural binaural sounds.

    PubMed

    M?ynarski, Wiktor; Jost, Jürgen

    2014-01-01

    Binaural sound localization is usually considered a discrimination task, where interaural phase (IPD) and level (ILD) disparities at narrowly tuned frequency channels are utilized to identify a position of a sound source. In natural conditions however, binaural circuits are exposed to a stimulation by sound waves originating from multiple, often moving and overlapping sources. Therefore statistics of binaural cues depend on acoustic properties and the spatial configuration of the environment. Distribution of cues encountered naturally and their dependence on physical properties of an auditory scene have not been studied before. In the present work we analyzed statistics of naturally encountered binaural sounds. We performed binaural recordings of three auditory scenes with varying spatial configuration and analyzed empirical cue distributions from each scene. We have found that certain properties such as the spread of IPD distributions as well as an overall shape of ILD distributions do not vary strongly between different auditory scenes. Moreover, we found that ILD distributions vary much weaker across frequency channels and IPDs often attain much higher values, than can be predicted from head filtering properties. In order to understand the complexity of the binaural hearing task in the natural environment, sound waveforms were analyzed by performing Independent Component Analysis (ICA). Properties of learned basis functions indicate that in natural conditions soundwaves in each ear are predominantly generated by independent sources. This implies that the real-world sound localization must rely on mechanisms more complex than a mere cue extraction. PMID:25285658

  2. Surface reactions of natural glasses

    SciTech Connect

    White, A.F.

    1986-12-31

    Reactions at natural glass surfaces are important in studies involving nuclear waste transport due to chemical control on ground water in host rocks such as basalt and tuff, to potential diffusion into natural hydrated glass surfaces and as natural analogs for waste glass stability. Dissolution kinetics can be described by linear surface reaction coupled with cation interdiffusion with resulting rates similar to those of synthetic silicate glasses. Rates of Cs diffusion into hydrated obsidian surfaces between 25{sup 0} and 75{sup 0}C were determined by XPS depth profiles and loss rates from aqueous solutions. Calculated diffusion coefficients were ten others of magnitude more rapid than predicted from an Arrhenius extrapolation of high temperature tracer diffusion data due to surface hydration reactions.

  3. Natural Dynamics for Combinatorial Optimization

    E-print Network

    Ovchinnikov, Igor V

    2015-01-01

    Stochastic and or natural dynamical systems (DSs) are dominated by sudden nonlinear processes such as neuroavalanches, gamma-ray bursts, solar flares, earthquakes etc. that exhibit scale-free statistics. These behaviors also occur in many nanosystems. On phase diagrams, these DSs belong to a finite-width phase that separates the phases of thermodynamic equilibrium and ordinary chaotic dynamics, and that is known under such names as intermittency, noise-induced chaos, and self-organized criticality. Within the recently formulated approximation-free cohomological theory of stochastic differential equations, the noise-induced chaos can be roughly interpreted as a noise-induced overlap between regular (integrable) and chaotic (non-integrable) deterministic dynamics so that DSs in this phase inherit the properties of the both. Here, we analyze this unique set of properties and conclude that such DSs must be the most efficient natural optimizers. Based on this understanding, we propose the method of the natural dyn...

  4. Natural gas monthly, February 1997

    SciTech Connect

    NONE

    1997-02-01

    This issue of the Natural Gas Monthly presents estimates of natural gas supply and consumption through February 1997. Estimates of natural gas prices are through November 1996 except electric utility prices that are through October 1996. Cumulatively for January through February 1997, the daily average rates for several data series remain close to those of 1996. (Comparing daily rates accounts for the fact that February 1996 had 29 days.) Daily total consumption for January through February is estimated to be 83 billion cubic feet per day, 1 percent higher than during the same period in 1996. Similarly, the estimate of average daily production of 53 billion cubic feet is 1.5 percent higher than in 1996, while daily net imports during the first 2 months of 1997 are virtually unchanged from 1996.

  5. Natural polysaccharides as electroactive polymers.

    PubMed

    Finkenstadt, Victoria L

    2005-06-01

    Electroactive polymers (EAPs), a new class of materials, have the potential to be used for applications like biosensors, environmentally sensitive membranes, artificial muscles, actuators, corrosion protection, electronic shielding, visual displays, solar materials, and components in high-energy batteries. The commercialization of synthetic EAPs, however, has so far been severely limited. Biological polymers offer a degree of functionality not available in most synthetic EAPs. Carbohydrate polymers are produced with great frequency in nature. Starch, cellulose, and chitin are some of the most abundant natural polymers on earth. Biopolymers are a renewable resource and have a wide range of uses in nature, functioning as energy storage, transport, signaling, and structural components. In general, electroactive materials with polysaccharide matrices reach conductance levels comparable with synthetic ion-conducting EAPs. This review gives a brief history of EAPs, including terminology, describes evaluation methods, and reports on the current progress of incorporating polysaccharides as matrices for doped, blended, and grafted electroactive materials. PMID:15724215

  6. Nature Neuroscience: doi:10.1038/nn.2977 Nature Neuroscience: doi:10.1038/nn.2977

    E-print Network

    Schnitzer, Mark

    beverages are generally designed to be as sweet as naturally sweetened drinks, and vary widely in sweetenerNature Neuroscience: doi:10.1038/nn.2977 #12;Nature Neuroscience: doi:10.1038/nn.2977 #12;Nature Neuroscience: doi:10.1038/nn.2977 #12;Nature Neuroscience: doi:10.1038/nn.2977 #12;Nature Neuroscience: doi:10

  7. Nature of Science Contextualized: Studying Nature of Science with Scientists

    ERIC Educational Resources Information Center

    Tala, Suvi; Vesterinen, Veli-Matti

    2015-01-01

    Understanding nature of science (NOS) is widely considered an important educational objective and views of NOS are closely linked to science teaching and learning. Thus there is a lively discussion about what understanding NOS means and how it is reached. As a result of analyses in educational, philosophical, sociological and historical research,…

  8. Nature Macmillan Publishers Ltd 1998 letters to nature

    E-print Network

    Jaeger, Dieter

    , the coincidence of diversity hotspots and conservation strategies. Nature 365, 335±337 (1993). 4. Lombard, A. T. The problems with multi-species conservation: do hotspots, ideal reserves and existing reserves coincide? S for conservation. Conserv. Biol. 11, 1094±1100 (1997). 9. Pressey, R. L. & Nicholls, A. O. Ef

  9. Naturalized Philosophy of Science and Natural Science Education.

    ERIC Educational Resources Information Center

    Siegel, Harvey

    1993-01-01

    Reviews the philosophical controversy concerning naturalism, and investigates the role it might play in the science classroom. Argues that science students can benefit from explicit study of this controversy and from explicit consideration of the extent to which philosophy of science can be studied naturalistically. (PR)

  10. $10.00 www.nature.com/nature naturejobs transferableskillsforpostdocs

    E-print Network

    ¨rnsson, S., Foulger, G., Stefa´nsson, R. & Skaftado´ttir, Th. in Earthquake Prediction-- An International on earthquake locations in southern California. Nature 375, 221­224 (1995). 2. Dieterich, J. A constitutive law for rate of earthquake production and its application to earthquake clustering. J. Geophys. Res. 99, 2601

  11. The function of terpene natural products in the natural world

    Microsoft Academic Search

    Natalia Dudareva; Jonathan Gershenzon

    2007-01-01

    As the largest class of natural products, terpenes have a variety of roles in mediating antagonistic and beneficial interactions among organisms. They defend many species of plants, animals and microorganisms against predators, pathogens and competitors, and they are involved in conveying messages to conspecifics and mutualists regarding the presence of food, mates and enemies. Despite the diversity of terpenes known,

  12. Wettability of natural superhydrophobic surfaces.

    PubMed

    Webb, Hayden K; Crawford, Russell J; Ivanova, Elena P

    2014-08-01

    Since the description of the 'Lotus Effect' by Barthlott and Neinhuis in 1997, the existence of superhydrophobic surfaces in the natural world has become common knowledge. Superhydrophobicity is associated with a number of possible evolutionary benefits that may be bestowed upon an organism, ranging from the ease of dewetting of their surfaces and therefore prevention of encumbrance by water droplets, self-cleaning and removal of particulates and potential pathogens, and even to antimicrobial activity. The superhydrophobic properties of natural surfaces have been attributed to the presence of hierarchical microscale (>1 ?m) and nanoscale (typically below 200 nm) structures on the surface, and as a result, the generation of topographical hierarchy is usually considered of high importance in the fabrication of synthetic superhydrophobic surfaces. When one surveys the breadth of data available on naturally existing superhydrophobic surfaces, however, it can be observed that topographical hierarchy is not present on all naturally superhydrophobic surfaces; in fact, the only universal feature of these surfaces is the presence of a sophisticated nanoscale structure. Additionally, several natural surfaces, e.g. those present on rose petals and gecko feet, display high water contact angles and high adhesion of droplets, due to the pinning effect. These surfaces are not truly superhydrophobic, and lack significant degrees of nanoscale roughness. Here, we discuss the phenomena of superhydrophobicity and pseudo-superhydrophobicity in nature, and present an argument that while hierarchical surface roughness may aid in the stability of the superhydrophobic effect, it is nanoscale surface architecture alone that is the true determinant of superhydrophobicity. PMID:24556235

  13. Introduction to the Nature Journal

    NSDL National Science Digital Library

    This Smithsonian in Your Classroom is the third in a three-part series that brings together writing and other disciplines. In the lessons here, students exercise the observation skills that are essential to writing, visual art, and science. First, they try to use evocative language in describing pictures of birds from the Smithsonianâ??s National Zoo. They go on to record observations and to make hypotheses as they follow the behavior of animals on the National Zooâ??s live webcams. They can watch the giant pandas, the tigers, the cheetahs, the gorillas, or any of a dozen other species.These classroom activities are intended as a preface or complement to a project increasingly popular in elementary and middle schoolsâ??the keeping of nature journals, whether on class outings or when the students are on their own. Included in the issue are words of advice for students from journal-keeping Smithsonian naturalists.The term nature journal seems to resist definition until we realize that the broadest definitions all apply. In Keeping a Nature Journal, the most popular recent book on the subject, Clare Walker Leslie puts it simply: â??whereas a diary or personal journal records your feelings toward yourself and others, a nature journal primarily records your responses to and reflections about the world of nature around you.â?With a subject as great as all outdoors, nature journals lend themselves to a wide range of expression. Sketches are often the most immediate way to capture the way things look. Deeper, written observations can be the basis for all kinds of creative writing.

  14. Hawaiian Natural Resources Monitoring Database

    NSDL National Science Digital Library

    The University of Hawaii's Hawaiian Natural Resources Monitoring Database is a centralized database that includes monitoring data for Hawaii's natural resources. Designed to help meet the information needs of land managers in Hawaii, the database includes "standardized and fully-documented data collection efforts by federal, state, and private agencies." A license (free, with permission) is required to access the database. Recently, the site added an updated master species list for Hawaii and an update (from US Fish and Wildlife Service) on the Endangered/Threatened status of Hawaiian species (.zip format).

  15. EM International, July 1994, Volume 2

    SciTech Connect

    Not Available

    1994-10-01

    The Office of Environmental Management (EM) at the Department of Energy (DOE) is seeking out and leveraging foreign technology, data, and resources in keeping with EM`s mandate to protect public health and the environment through the safe and cost-effective remediation of the Department`s nuclear weapons sites. EM works closely with foreign governments, industry, and universities to obtain innovative environmental technologies, scientific and engineering expertise, and operations experience that will support EM`s objectives. Where appropriate, these international resources are used to manage the more urgent risks at our sites, secure a safe workplace, help build consensus on critical issues, and strengthen our technology development program. Through international agreements EM engages in cooperative exchange of information, technology, and individuals. Currently, we are managing agreements with a dozen countries in Europe, Latin America, and Asia. These agreements focus on environmental restoration, waste management, transportation of radioactive wastes, and decontamination and decommissioning. This publication contains the following articles: in situ remediation integrated program; in-situ characterization and inspection of tanks; multimedia environmental pollutant assessment system (MEPAS); LLNL wet oxidation -- AEA technology. Besides these articles, this publication covers: EU activities with Russia; technology transfer activities; and international organization activities.

  16. Natural Communication with Computers II.

    ERIC Educational Resources Information Center

    Bobrow, Daniel G.

    Research was done to develop techniques to facilitate natural communication between computers and people, other computers, and real time devices. The work was divided into tasks covering representation of semantic information, special purpose languages, real-time input-output, pattern recognition, and time-sharing research and modeling. (Author)

  17. Adaptive management of natural resources

    Microsoft Academic Search

    Catherine Allan

    The concept of adaptive management has been embraced by natural resource managers worldwide, and in Australia the promise to manage adaptively underpins most government water related programs and projects. Adaptive management is learning from doing; learning comes through the implementation of policies and strategies, so adaptive management complements research-based learning. Passive adaptive management learns from the implementation of an historically

  18. Argonne National Laboratory's Natural Convection

    E-print Network

    Kemner, Ken

    will incorporate passive safety systems, many in the form of natural circulation loops, to ensure safe and long temperature measurement system augments the NSTF's conventional instrumentation, supporting: · High--confirms the performance of reactor cavity cooling systems (RCCS) and similar passive confinement or containment decay heat

  19. Denmark prepares for natural gas

    Microsoft Academic Search

    Jeffs

    1979-01-01

    Denmark will import natural gas from the German Ruhrgas network to reduce its dependence on oil, although oil will continue to be the major energy source. A national program of energy conservation includes conversion of oil-fired power statons to either coal or to a co-generation system with district heating and the increased use of gas to supply more of the

  20. Natural products: DNA double whammy

    NASA Astrophysics Data System (ADS)

    Gates, Kent S.

    2014-06-01

    The lomaiviticins are exceedingly potent antibiotic agents, but the mechanism responsible for this activity has so far been unclear. Now, efficient generation of double-strand breaks in DNA by lomaiviticin A has been linked to the remarkable cytotoxicity of these diazobenzofluorene-containg natural products.

  1. A classification of natural rivers

    Microsoft Academic Search

    David L. Rosgen

    1994-01-01

    A classification system for natural rivers is presented in which a morphological arrangement of stream characteristics is organized into relatively homogeneous stream types. This paper describes morphologically similar stream reaches that are divided into 7 major stream type categories that differ in entrenchment, gradient, width\\/depth ratio, and sinuosity in various landforms. Within each major category are six additional types delineated

  2. Polycyclic Aromatic Compounds in Nature

    Microsoft Academic Search

    Max Blumer

    1976-01-01

    A great variety of polycyclic aromatic hydrocarbons (PAHs), including both known and suspected carcinogens, are widespread throughout soils, sea-bottom sediments and petroleum deposits. They are formed whenever organic substances are exposed to high temperatures. The great uniformity of composition and the nature of alkyl substituents suggest that most of the PAHs in the soil and in the sea-bed have been

  3. The nature of sports marketing

    Microsoft Academic Search

    André W. Bühler; Gerd Nufer; Carsten Rennhak

    2006-01-01

    Sports marketing has established itself over the last three decades not only as a very special form of marketing but also as an own subject of research. However, it is quite surprising that the nature of sports marketing is relatively unknown as different definitions of sports market-ing indicate. Indeed, a generally accepted definition does not exist to date and opinions

  4. NATURAL RADIOACTIVE ELEMENTS IN PLANTS

    Microsoft Academic Search

    Kovalevskii

    1962-01-01

    Selective absorption of Ra, U, and Th isotopes by plants and the ; radioactive equilibrium of Ha isotopes and their decay products were studied. ; The accumulation of U, Ha, and other rare-earth elements by plants is determined ; by chemical rather than radioactive properties. In spite of the fact that the ; number of BETA decays from natural radioactive

  5. The Work of Natural Killers

    NSDL National Science Digital Library

    2006-10-02

    Second monthly installment of our "What A Year!" website project, introducing life science breakthroughs to middle and high school students and their teachers. This story looks at new understanding of and research into the role of natural killer T-cells in asthma.

  6. Nature Activities for Early Childhood.

    ERIC Educational Resources Information Center

    Nickelsburg, Janet

    This manual contains 44 separate projects which are designed to help teachers and parents provide young children (in kindergarten through second grade) with experiences in observing natural phenomena, plants, and animals. Each project centers around an activities section prefaced with scientific information meant to provide the teaching adult with…

  7. Nature : a prototype digital archive

    Microsoft Academic Search

    Ross MacIntyre; Simon Tanner

    2000-01-01

    In response to a proposal to digitise the entire back-run of the journal Nature (1869-1992), a pilot project was commissioned to discover the technical, financial and content reproduction issues involved in making this prestigious science journal digitally available. The paper describes the processes undertaken, the results ascertained from these pilot processes and the techniques used. The pilot, though not complete

  8. Reports from Other Journals: Nature

    Microsoft Academic Search

    Sabine Heinhorst; Gordon Cannon

    1997-01-01

    The first Nature issue of the new year (January 2, 1997, pp 13-16) featured the annual commentary on anniversaries of scientific discoveries and inventions through the centuries, a brief tour de force in the history of science. This year's enlightening list includes, among other things, the discovery of the electron (1897) and of mountains on the moon (1647), and the

  9. A Natural Language Graphics System.

    ERIC Educational Resources Information Center

    Brown, David, C.; Kwasny, Stan C.

    This report describes an experimental system for drawing simple pictures on a computer graphics terminal using natural language input. The system is capable of drawing lines, points, and circles on command from the user, as well as answering questions about system capabilities and objects on the screen. Erasures are permitted and language input…

  10. Adaptation to natural flow regimes

    Microsoft Academic Search

    David A. Lytle; N. LeRoy Poff

    2003-01-01

    Floods and droughts are important features of most running water ecosystems, but the alteration of natural flow regimes by recent human activities, such as dam building, raises questions related to both evolution and conservation. Among organisms inhabiting running waters, what adaptations exist for surviving floods and droughts? How will the alteration of the frequency, tim- ing and duration of flow

  11. The NatureNurture Debate

    Microsoft Academic Search

    Ragnhild Bang Nes

    The last decades have seen an explosive growth in research on the effects of nature and nurture in developmental processes, leading to improved understanding of human behaviour. Risk and protective factors for well-being and health have been found to originate from genetic\\/biological, social, and psychological realms, and to interact in complex ways within individuals and social groups, and across development

  12. Dimensional stability of natural fibers

    SciTech Connect

    Driscoll, Mark S. [Ultraviolet Light/Electron Beam (UV/EB) Technology Center, State University of New York College of Environmental Science and Forestry (SUNY-ESF), 1 Forestry Drive, Syracuse, NY 13210 (United States); Smith, Jennifer L.; Woods, Sean; Tiss, Kenneth J. [Ultraviolet Light/Electron Beam (UV/EB) Technology Center, State University of New York College of Environmental Science and Forestry (SUNY-ESF), 1 Forestry Drive, Syracuse, NY 13210 and Sustainable Construction Management and Engineering, SUNY-ESF (United States); Larsen, L. Scott [New York State Energy Research and Development Authority (NYSERDA), 17 Columbia Circle, Albany, NY 12203 (United States)

    2013-04-19

    One of the main problems associated with the use of natural fibers as reinforcing agents in composites is their uptake of moisture. Many natural fibers are lignocellulosic, which causes them to swell and shrink as the amount of available moisture changes. Swelling and shrinking can cause composites to prematurely fail. This paper presents the results of a preliminary study that considers the use of two different low molecular weight monomers, hydroxyethyl methacrylate (HEMA) and hydroxyethyl acrylate (HEA), polymerized by electron beam ionizing radiation, to dimensionally stabilize natural fibers. Eight different treatments consisting of varying amounts of monomer, encapsulating agent, and cross-linkers, were evaluated for their ability to dimensionally stabilize sisal fiber. Results indicate that both polymerized HEA and HEMA can reduce the swelling of sisal fiber. The effectiveness of HEA and HEMA can be further enhanced with the use of a cross-linker (SR 454). The use of hydroxylated monomers to dimensionally stabilize natural fibers may play an important role in reducing delamination and improving fiber-resin adhesion in composites.

  13. Human nature and institutional analysis

    Microsoft Academic Search

    Benito Arruñada

    2005-01-01

    This essay reviews some findings in cognition sciences and examines their consequences for the analysis of institutions. It starts by exploring how humans’ specialization in producing knowledge ensures our success in dominating the environment but also changes fast our environment. So fast that it did not give time to natural selection to adapt our biology, causing it to be potentially

  14. Danica D. Damljanovic Natural Language

    E-print Network

    Stevenson, Mark

    Danica D. Damljanovi´c Natural Language Interfaces to Conceptual Models Submitted in partial difficulties for non-expert users. One way to lower the learning overhead and make ontology queries more through all difficult moments that existed while working on this thesis and helping out with all those

  15. Natural gas monthly, January 1997

    SciTech Connect

    NONE

    1997-01-01

    This publication, the Natural Gas Monthly, presents the most recent data on natural gas supply, consumption, and prices from the Energy Information Administration (EIA). Of special interest in this issue are two articles summarizing reports recently published by EIA. The articles are {open_quotes}Natural Gas Productive Capacity{close_quotes} and {open_quotes}Outlook for Natural Gas Through 2015,{close_quotes} both of which precede the {open_quotes}Highlights{close_quotes} section. With this issue, January 1997, changes have been made to the format of the Highlights section and to several of the tabular and graphical presentations throughout the publication. The changes to the Highlights affect the discussion of developments in the industry and the presentation of weekly storage data. An overview of the developments in the industry is now presented in a brief summary followed by specific discussions of supply, end-use consumption, and prices. Spot and futures prices are discussed as appropriate in the Price section, together with wellhead and consumer prices.

  16. Natural gas monthly, March 1999

    SciTech Connect

    NONE

    1999-03-01

    This issue of the Natural Gas Monthly contains estimates for March 1999 for many natural gas data series at the national level. Estimates of national natural gas prices are available through December 1998 for most series. Highlights of the data contained in this issue are listed below. Preliminary data indicate that the national average wellhead price for 1998 declined to 16% from the previous year ($1.96 compared to $2.32 per thousand cubic feet). At the end of March, the end of the 1998--1999 heating season, the level of working gas in underground natural gas storage facilities is estimated to be 1,354 billion cubic feet, 169 billion cubic feet higher than at the end of March 1998. Gas consumption during the first 3 months of 1999 is estimated to have been 179 billion cubic feet higher than in the same period in 1998. Most of this increase (133 billion cubic feet) occurred in the residential sector due to the cooler temperatures in January and February compared to the same months last year. According to the National Weather Service, heating degree days in January 1999 were 15% greater than the previous year while February recorded a 5% increase.

  17. NIKVISION: NATURAL INTERACTION FOR KIDS

    Microsoft Academic Search

    Javier Marco; Eva Cerezo; Sandra Baldasarri

    2008-01-01

    This paper shows the development of a video game console based on the use of natural interfaces. Its use does not require any training, nor using any piece of technological hardware, and the kid plays with it the same way he plays with any of his non technological toys. An important aim has been the development of technologies that do

  18. Readings in natural language processing

    SciTech Connect

    Grosz, B.J.; Jones, K.S.; Webber, B.L.

    1986-01-01

    The book presents papers on natural language processing, focusing on the central issues of representation, reasoning, and recognition. The introduction discusses theoretical issues, historical developments, and current problems and approaches. The book presents work in syntactic models (parsing and grammars), semantic interpretation, discourse interpretation, language action and intentions, language generation, and systems.

  19. Natural history of Ehrlichia ruminantium

    Microsoft Academic Search

    Basil A. Allsopp

    2010-01-01

    Ehrlichia ruminantium is an obligately intracellular proteobacterium which causes a disease known as heartwater or cowdriosis in some wild, and all domestic, ruminants. The organism is transmitted by ticks of the genus Amblyomma, and it is of serious economic importance wherever the natural vectors occur, an area which includes all of sub-Saharan Africa, and several islands in the Caribbean. The

  20. Natural Sciences Tripos EARTH SCIENCES

    E-print Network

    Cambridge, University of

    Natural Sciences Tripos EARTH SCIENCES University of Cambridge Undergraduate Prospectus 2013.indd 1Undergraduate Prospectus 2013.indd 1 29/07/2013 16:44:3529/07/2013 16:44:35 #12;Department of Earth Sciences is the science of the Earth. What is the Earth made of? What processes shape and change it? What's happened

  1. Natural Climate Variability Michael Ghil

    E-print Network

    Ghil, Michael

    periodic (often called quasi-periodic) variations in Earth's orbit around the Sun affect the intensityNatural Climate Variability Michael Ghil Volume 1, The Earth system: physical and chemical, and a low-frequency one, with a recurrence of 4­5 years. The interaction of these three distinct modes

  2. China's synthetic natural gas revolution

    NASA Astrophysics Data System (ADS)

    Yang, Chi-Jen; Jackson, Robert B.

    2013-10-01

    China has recently pushed for investments in large-scale coal-fuelled synthetic natural gas plants. The associated carbon emissions, water needs and wider environmental impacts are, however, mostly neglected and could lock the country into an unsustainable development path.

  3. Natural Selection and Developmental Constraints

    E-print Network

    Monteiro, Antónia

    , scaling relationships are shaped by strong natural selection. Among species, populations, and even sexes) and exhibit lineage-specific, seasonal morph­specific, or sex-specific scaling relationships associated,1 *. Bas J. Zwaan,1 David L. Stern,2 Paul M. Brakefield1 In animals, scaling relationships between

  4. Natural history museums and cyberspace

    USGS Publications Warehouse

    Wemmer, C.; Erixon-Stanford, M.; Gardner, A.L.

    1996-01-01

    Natural history museums are entering the electronic age as they increasingly use computers to build accessible and shareable databases that support research and education on a world-wide basis. Museums are exploring the Internet and other shared uses of electronic media to enhance their traditional roles in education, training, identifications, technical assistance, and collections management.

  5. Fueling up with natural gas

    Microsoft Academic Search

    F. Stodolsky; D. J. Santini

    1993-01-01

    A careful analysis is needed of the energy efficiency of the fuel cycle (the efficiency of the conversion from resource extraction to final use by consumers) and the environmental impact of natural gas fuels. This information can help policy makers decide which fuels could be used to displace imported oil, maintain air quality, and be the basis of a new

  6. Natural Dyes. Third World Science.

    ERIC Educational Resources Information Center

    Jones, Natalie; Hughes, Wyn

    This unit, developed by the Third World Science Project, is designed to add a multicultural element to existing science syllabi (for students aged 11-16) in the United Kingdom. The project seeks to develop an appreciation of the: boundless fascination of the natural world; knowledge, skills, and expertise possessed by men/women everywhere;…

  7. Climate shocks: natural and anthropogenic

    Microsoft Academic Search

    Kondratev

    1988-01-01

    The impact of multiple nuclear explosions in the earth atmosphere on global climate is explored, summarizing the results of recent theoretical modeling studies. Two natural analogs, the greenhouse effect and a major volcanic explosion, are analyzed; and particular attention is then given to data on the climatic effects of previous atmospheric tests of nuclear weapons, numerical models of these effects,

  8. Natural motion for robot arms

    Microsoft Academic Search

    Dan Koditschek

    1984-01-01

    This paper describes some initial steps toward the development of more natural control strategies for free motion of robot arms. The standard lumped parameter dynamical model of an open kinematic chain is shown to be stabilizable by linear feedback, after nonlinear gravitational terms have been cancelled. A new control algorithm is proposed and is shown to drive robot joint positions

  9. Natural Phenomena in South America

    Microsoft Academic Search

    Thomas R. R. Stebbing

    1875-01-01

    IN Mr. J. Munro's very interesting notes made during a cable-laying expedition from Parà to Cayenne, which were published in NATURE, vol. xi. p. 329, the following passage occurs upon which comment may be useful. After describing a beautifully coloured Crustacean, and an animal which he speaks of as a crab or water-beetle, Mr. Munro goes on to say :

  10. Psychoanalysis as a Natural Science

    Microsoft Academic Search

    John Bowlby

    1984-01-01

    Despite Freud's unwavering intention that psychoanalysis should conform to the requirements of a natural science, this aim has not been realized. Some analysts hold the aim have been mistaken. Others believe it can and should be achieved, proposing that traditional metapsychology be replaced by a new conceptual framework utilizing modern concepts not available to Freud. Utilizing data obtained from current

  11. Man Cannot Change His Nature.

    ERIC Educational Resources Information Center

    Tsipko, Aleksandr Sergeevich

    1990-01-01

    Considers perestroika's implications for Soviet recognition of sources of human motivation. Critically examines how the collectivist ideology endemic to twentieth-century Russian history failed to consider human nature. Attributes Soviet economic problems to a disregard of the need for individual autonomy and dignity. Calls for a reconsideration…

  12. Natural Selection and Applied Genetics

    NSDL National Science Digital Library

    2010-01-01

    Natural Selection and Applied Genetics is a graduate-level professional development course designed to enhance your understanding and teaching of life science. In two sessions, you will investigate life science topics using hands-on activities and online resources including video segments, interactive activities, readings, and other multimedia materials. These resources are drawn from Teachers' Domain, WGBH's digital library service.

  13. The Nature of Adventure Education.

    ERIC Educational Resources Information Center

    Cousineau, Claude

    Man answers a natural call for adventure in many ways including escape into fantasy, vertigo seeking, kinetic euphoria, and by exercising the pioneer spirit. Adventure education can help equip people to satisfy their need for adventure in meaningful, enriching ways. A reaction to unsatisfactory educational milieus, adventure education has emerged…

  14. Database semantics for natural language

    Microsoft Academic Search

    Roland Hausser

    2001-01-01

    This paper presents a formal 'fragment' of database semantics as a declarative model of a cognitive agent. It is called a SLIM machine and functionally integrates the procedures of natural language interpretation, conceptualization, and production as well as query and inference. Each of these functions is illustrated explicitly by a corresponding LA-grammar. In addition, a control structure based on the

  15. Sweetening agents from natural sources.

    PubMed

    Morris, J A

    1976-01-01

    Sweetness is an important taste sensation to humans. The absence of suitable sweeteners as alternatives to cyclamates and saccharin has led to a renewed interest in sweeteners form natural sources. A brief review of the history of sweetener usage provides a basis for understanding our present heavy consumption of sweet substances. The structure of naturally-occurring compounds possessing a sweet taste range from simple sugars to complex, intensely sweet proteins. The structural types include monoterpenes, diterpenes, triterpenes, flavonoids, steroid saponins, dipeptides, and proteins. Some of these substances are not, strictly-speaking, natural but are derived from natural sources by relatively minor chemical modification. The properties of two non-sweet substances, miraculin and gymnemic acid, are included because of their close relationship to the subject of sweeteners. Miraculin causes sour substances to taste sweet and gymnemic acid selectively blocks sweet taste perception. The second part of the paper presents some of the work on monellin, the intensely sweet protein from "serendipity berries" (Dioscoreophyllum cumminsii). The physico-chemical studies of monellin provide convincing evidence that it is, indeed, a protein. Structural studies using denaturants and specific chemical modifications have provided a beginning of our understanding of the molecular basis of the sweet taste of monellin. PMID:5643

  16. Informatique Nature de la formation

    E-print Network

    Sart, Remi

    Informatique Nature de la formation : Diplôme national de l'Enseignement Supérieur Durée des études formation : Campus des Cézeaux (Aubière) #12;2 Informatique UFR Sciences et Technologies PRÉSENTATION Objectifs L'objectif de la licence Informatique est de donner une connaissance approfondie des systèmes

  17. Nurturing the Nature of Science

    ERIC Educational Resources Information Center

    Reeves, Carolyn; Chessin, Debby; Chambless, Martha

    2007-01-01

    Historical stories of scientists provide an excellent opportunity to help students see that science is indeed a human endeavor and demonstrate the interrelationships among science, technology, and society. A number of engaging historical accounts illustrate characteristics of the nature of science. The story of Lise Meitner leads students through…

  18. Occupational Analysis: Natural Resources Technician

    NSDL National Science Digital Library

    The Advanced Technology Environmental and Energy Center (ATEEC) has provided this document which includes an overview of general required competencies for natural resources technicians. Suggested general areas of competence and specific tasks within each area are provided. Users must download this resource for viewing, which requires a free log-in. There is no cost to download the item.

  19. Wind Engineering & Natural Disaster Mitigation

    E-print Network

    Denham, Graham

    Wind Engineering & Natural Disaster Mitigation For more than 45 years, Western University has been internationally recognized as the leading university for wind engineering and wind- related research. Its of environmental disaster mitigation, with specific strengths in wind and earthquake research. Boundary Layer Wind

  20. Getting in Sync with Nature

    ERIC Educational Resources Information Center

    Fisher, Diane; Novati, Alex; Schugart, Gene

    2004-01-01

    The current time "measuring system" has taken on a life of its own, bearing only an approximate resemblance to the natural occurrences it set out to measure. The "analemma equation of time" was created to precisely set our clocks by converting irregular sun time to the even, regular tempo of mean time. In this article, the equation is described in…