WorldWideScience

Sample records for combustion bois dans

  1. Pollutant emission inventories: contribution of wood combustion in emissions of greenhouse gases and atmospheric pollutants; Inventaires des emissions de polluants: contribution de la combustion bois dans les emissions de gaz a effet de serre et les emissions de polluants classiques

    Energy Technology Data Exchange (ETDEWEB)

    Allemand, N. [CITEPA, 75 - Paris (France)

    2009-03-15

    The use of wood for energy applications has a significant contribution in emissions of some pollutants involved in acidification, eutrophication and ozone formation. The largest contribution is linked to the use of wood in domestic appliances. On contrary, the use of wood for steam and electricity production in industrial and collective heating boilers is reduced. Wood combustion in domestic appliances represents 31% of total emissions for CO, 20,6% for NMVOC, 24,8% for PM{sub 10}, 37,5% for PM{sub 2.5} and 74,1% for 4 HAP in 2006. France must be in compliance with national emission ceilings implemented by the European Directive 2001/81/EC for SO{sub 2}, NO{sub x} and NMVOC in 2010. New ceilings are being prepared by the European Commission for application in 2020. Moreover, a ceiling should be implemented for PM{sub 2.5}. The increase in energy performances of domestic appliances is necessary as well as a large penetration of new appliances with high efficiency and low emissions to remove the oldest ones. The decrease of the energy demand of building and houses is also crucial. Wood combustion in industrial and large collective boilers is carried out in good conditions and emissions are low. Wood is a renewable energy. Its combustion is neutral for CO{sub 2} emissions as it is considered that when emitted, CO{sub 2} is absorbed by vegetation in growth. Wood use is an essential component for contributing to the CO{sub 2} emission reduction by 20% in 2020 compared to 1990 according to objectives fixed by the law project no.1 of the Grenelle of Environment and the European Commission and a proportion of 23% of renewable energy in the final energy consumption. This use must be carried out in well controlled and optimized conditions for avoiding emissions of classical pollutants and a durable management of forests can only enable their sink role for CO{sub 2}. (author)

  2. Le bois et ses usages dans le De architectura de Vitruve

    Directory of Open Access Journals (Sweden)

    Sylvie Rougier-Blanc

    2011-05-01

    Full Text Available Ni traité d’architecture à proprement parler, ni véritable ouvrage philosophique, le De architectura de Vitruve permet d’aborder la question du matériau bois et de ses usages en architecture de manière à la fois précise et décevante pour l’historien des techniques : précise parce que le paragraphe 9 du livre II est plus particulièrement consacré à cette materia, mais décevante parce que le contenu ne répond pas aux attentes et ne permet pas de dresser un bilan des choix des essences en foncti...

  3. Prélèvements de bois de feu dans les villages du Sud de Maroua (Cameroun: une modélisation

    Directory of Open Access Journals (Sweden)

    Caroline Merle

    2003-03-01

    Full Text Available Dans la province de l’Extrême-Nord du Cameroun, une analyse spatiale des facteurs de localisation de l’exploitation du bois de feu met en évidence les logiques qui dirigent les coupes vers certains secteurs du finage villageois. L’utilisation de chorèmes fait ressortir la part des déterminants écologiques et agronomiques, du contrôle des terres et de l’organisation du transport du bois. Le modèle prévisionnel de la pression d’exploitation va à l’encontre de l’idée reçue que les coupes sont anarchiques et marque un premier pas vers la gestion des ressources ligneuses de la région.

  4. Corpo, estética, dança popular: situando o bumba-meu-boi Body, Aesthetic and popular dance: pointing the bumba-meu-boi Cuerpo, estética y danza popular: situando el bumba-meu-boi

    Directory of Open Access Journals (Sweden)

    2006-11-01

    Full Text Available Este artigo propõe refletir os conceitos Corpo e Estética, situando-os no cenário das danças populares, especificamente o bumba-meu-boi do Maranhão. Entre tantas leituras possíveis dos textos inscritos no corpo e em diversas situações, nas quais poderíamos situar essa manifestação da cultura sob vários enfoques, a saber: folclórico, histórico, antropológico e outros, para serem lidos, interpretados, compreendidos e atualizados, situamos nossos estudos na condição de fenômeno estético. Para tanto, temos, como interlocução principal, os estudos fenomenológicos sobre o corpo em Maurice Merleau-Ponty. PALAVRAS-CHAVES: corpo – estética – bumba-meu-boi – fenomenologia It enters as many possible readings of the enrolled texts in the body and, in diverse situations, this article considers to reflect the concepts: Aesthetic body and pointing out them in the scene of the popular dances, specifically the Bumba-meu-boi of the Maranhão.Therefore, it enters some approaches that we could point out this manifestation of the culture, to know: folkloric, description, anthropological, among others, that they are some of the texts offered for this form of manifestation to be read, interpreted, understood and brought up to date, we point out our studies of this manifestation in the condition of aesthetic phenomenon. For In such a way we have as main interlocution the phenomenological studies on the Body in Maurice Merleau-Ponty. KEY-WORDS: aesthetic body – bumba-meu-boi –phenomenology Entre tantas lecturas posibles de los textos inscritos en el cuerpo y en diversas situaciones,ese artículo propone reflejar los conceptos: Cuerpo y Estética localizado en presentaciones de danzas populares, específicamente el Bumba-meu-boi del Maranhão. Portanto, entre varios enfoques que podríamos situar esa manifestación de la cultura, a saber: folklórico,histórico,antropológico entre otros, que son algunos de los textos ofrecidos por esa

  5. Énergie et bois dans le territoire alpin : stratégies autour d'une ressource incertaine

    Directory of Open Access Journals (Sweden)

    Hélène Avocat*

    2012-02-01

    Full Text Available Depuis dix ans, le bois-énergie se développe dans les territoires alpins, sous l’impulsion de politiques volontaristes. Face à l'épuisement prochain des produits connexes de scierie, déjà largement utilisés dans la papeterie, la panneauterie et la granulation, la plaquette forestière est amenée à se développer pour des usages industriels ou locaux. Il s’agit d’une opportunité pour les territoires et les forêts alpines, dont la vulnérabilité doit cependant être prise en compte dans la délicate conciliation d'objectifs économiques et environnementaux. L’étude des différentes politiques et dispositifs montre des approches très différentes.  Cela peut générer des tensions sur la ressource et donner lieux à des comportements contradictoires avec le développement d’une énergie dite verte : allongements des distances de transports et donc des émissions de polluants, dégradation de l’environnement et de la multifonctionnalité des forêts, etc.

  6. Environmental assessment of wood burning in independent heating devices; Diagnostic environnemental du chauffage au bois dans des appareils independants

    Energy Technology Data Exchange (ETDEWEB)

    Rogaume, C.; Rogaume, Y.; Zoulalian, A. [Nancy-Univ., Lab. d' Etudes et de Recherches sur le Materiau Bois (LERMAB), Ecole Nationale Superieure des Technologies et Industries du Bois (ENSTIB), 88 - Epinal (France); Trouve, G. [Universite de Haute Alsace, Lab. de Gestion des Risques et Environnement (LGRE), 68 - Mulhouse (France)

    2009-03-15

    An environmental assessment has been achieved on two domestic wood-heating devices, a closed fireplace and an open fireplace which represent 80% of the sale market of wood small-scale combustion units and around 65% of the use of wood-energy in France. Not only deals this study with the atmospheric polluting emissions produced in the exhaust stack, but also with the indoor air quality. Therefore, different pollutants were measured at the emission stage and as indoor air concentrations: carbon monoxide (CO), carbon dioxide (CO{sub 2}), volatile organic compounds (VOC), methane (CH{sub 4}), nitrogen oxides (NO{sub X}), particulate matter with different sizes (PM{sub 10} to PM{sub 0.1}), polycyclic aromatic hydrocarbons (PAH) and dioxines and furans. The results concerning indoor air were compared to measurements that showed the influence of residential heating devices. without exhaust duct like an oil stove or a gas stove (space heater) on indoor air quality. Some combustion emission experiments achieved in normal conditions showed that the combustion in open fireplace pollutes more than the combustion in closed fire-place: around 10 times more of PM{sub 2.5} (mass concentration), more than 4 times of total VOC, 1.5 times more of dioxines and furans. On the other hand, the opposite trend was shown for PAH emissions (between 2 and 3 times less depending on the regulations considered). The comparison of the impact of different heating appliances on indoor air quality shows that the rate of CO is the same for all the devices except for the open fireplace which is higher. The CO{sub 2} rate is 10 times higher for the oil stove and 8 times higher for the gas stove than for the fireplaces, which is due to the lack of exhaust duct. The concentration of PM{sub 2.5} is 16 times higher for the open fireplace, 1.6 times higher for the oil stove and 4.4 times higher for the gas stove than the closed fireplace. The percentage of the number distribution of nano-particles, that

  7. Fraksi Mol Dan Variasi Ph Terhadap Sifat Magnetik Dan Struktur Mikro Barium Heksaferrit Dengan Metode Sol-Gel Auto Combustion

    Directory of Open Access Journals (Sweden)

    Rizki Agustianto

    2014-03-01

    Full Text Available Pada penelitian ini di harapkan dapat memberikan informasi yang akurat dan optimal untuk penambahan unsur paduan yang terbaik untuk menghasilkan barium heksaferrit dengan tingkat penyerapan gelombang mikro yang optimum. Barium heksaferrit termasuk dalam material yang memiliki sifat ferromagnetik dan termasuk hard magnetic. RAM membutuhkan material yang memiliki sifat soft magnetic. Oleh karena itu banyak diteliti bagaimana cara untuk mendapatkan sifat soft magnetic dari barium heksaferrit. Salah satu cara yang telah ditemukan adalah dengan menambahkan unsur baru. Unsur baru ditambahkan agar mengganggu struktur kristalnya dan menyebabkan perubahan sifat magnetiknya dari hard magnetic menjadi soft magnetic yang cocok untuk RAM. Unsur yang biasanya digunakan untuk mengganggu sejumlah ion Fe dalam komposisi hexaferrit adalah Ti, Zn, Mn, Ni, Co, dll. Efek yang dapat ditimbulkan dari penambahan unsur tersebut misalnya, variasi dalam koersivitas, magnetisasi saturasi, dan suhu Curie telah ditujukan untuk magnetik aplikasi. Sementara dalam aplikasi elektromagnetik, ferromagnetik resonansi frekuensi pergeseran, peningkatan pencocokan impedansi, dan elektromagnetik peningkatan penyerapan gelombang. Pada penelitian kali ini dilakukan penambahan unsur paduan Co-Zn pada barium heksaferrit. Penambahan dilakukan dengan menggunakan metode sol-gel auto combustion, dengan variasi fraksi mol x= 0.2 , 0.4 dan 0.6 dan variasi pH 7, 9, dan 11. Hasil dari penambahan tersebut kemudian di sintering pada temperatur 9500C selama 3 jam. Selanjutnya hasilnya akan dianalisis dengan pengujian XRD, SEM, dan VSM  sehingga akan didapatkan informasi mengenai struktur mikro, fasa dan tingkat magnetisasi dari serbuk barium heksaferrit yang telah ditambahkan unsur paduan. Hasil penelitian ini didapatkan pada pH 7 dan x = 0,4 penambahan unsur paduan Co-Zn paling sesuai untuk material penyerap radar karena memiliki nilai koersivitas paling rendah yaitu 0,1104 Tesla

  8. Modélisation de la combustion dans un moteur diesel d'automobile

    Science.gov (United States)

    Pinchon, Philippe

    La plupart des moteurs diesels utilisés pour la traction des véhicules automobiles sont des moteurs à préchambre. Le combustible y est introduit sous forme liquide, à haute pression, se vaporise, auto-inflamme et brûle dans un espace confiné dans lequel règnent des vitesses d'écoulement très élevées. La vitesse de combustion, et donc le rendement du moteur, sont très sensibles à divers paramètres liés à l'injection ou à la géométrie de la chambre. Cette dernière joue un rôle prédominant sur l'aérodynamique interne et son interaction avec la propagation de la flamme.

  9. Nouveaux critères pour juger de l'efficacité d'un fourneau à la combustion du charbon de bois

    Directory of Open Access Journals (Sweden)

    Ndaysenga, M.

    1994-01-01

    Full Text Available New Criteria to Judge Stove Efficiency in the Charcoal Combustion. The water boil test efficiency for choosing the most economic stove in combustion is estimated on the basis of four stoves. In addition to the heating and boiling energy usually considered as selection criterion, other criteria such as the boiling time and the combustion rate have been taken to indicate efficiency. Strangely, it appeared that the stove which maintains water at its boiling point for a long time and has the lowest combustion rate doesn 't valorize fuel energy efficiently if you only keep to the heating and boiling energy. The cooking test made it possible to explain that apparent contradiction : the fuel energy fraction which doesn't enter in the calculation of the heating and boiling energy isn't really lost. A low combustion rate associated with a long boiling time proved to be the best criteria of choosing the most economic stove in fuel. Therefore, the only water boil test doesn't make it possible to identify the most economically efficient stove. Resorting to the cooking test is compelling.

  10. INSENCE COMBUSTIBLE SEREH, CENGKEH DAN JERUK SEBAGAI PENOLAK NYAMUK AEDES AEGYPTI

    OpenAIRE

    Mulyani, Sri; Mulyaningsih, Budi; Lestari, Anindita Winda; Munawaroh, Fitri Ana; Anna, Diescendy Selly

    2015-01-01

    Nyamuk merupakan salah satu serangga vektor penyakit seperti demam berdarah, malaria, filariasis, dan sebagainya. Penggunaan bahan yang memiliki aktivitas repelan (penolak) seperti sereh, daun jeruk, daun cengkeh merupakan salah satu cara untuk melindungi diri dari gigitan nyamuk. Sediaan dupa (insence combustible) dikenal sebagai sediaan aromaterapi yang dapat digunakan setiap saat, yang umumnya digunakan pada acara-acara keagamaan. Pada penelitian ini dimaksudkan untuk membuat sediaan insen...

  11. Dioxines, furans and other pollutants emissions bond to the combustion of natural and additive woods; Facteurs d'emission. Emissions de dioxines, de furanes et d'autres polluants liees a la combustion de bois naturels et adjuvantes

    Energy Technology Data Exchange (ETDEWEB)

    Collet, S

    2000-02-15

    This report deals especially on the dioxines and furans bond to the combustion of wood in industrial furnaces and domestic furnaces. It aims to define the environmental strategy which would allow the combustion of wood residues to produce energy. The first part recalls general aspects concerning the wood. The six other parts presents the wood resources and wastes, the additive used, the combustion and the different factors of combustion and finally the pollutants emissions. (A.L.B.)

  12. Catalyse électro-microbienne dans les piles à combustible

    OpenAIRE

    Dumas, Claire

    2007-01-01

    Les piles à combustible microbiennes (PACM) sont des systèmes qui assurent la conversion directe de matières organiques en énergie électrique en utilisant des biofilms bactériens comme catalyseur des réactions électrochimiques. Cette étude vise à améliorer la compréhension des mécanismes de transfert électronique entre les bactéries adhérées et les électrodes, ainsi qu'à optimiser la production électrique des PACMs en explorant et caractérisant différents matériaux d'électrodes. Les expérienc...

  13. Pertinence de l'implantation de la filiere granule de bois pour le Quebec

    Science.gov (United States)

    Tremblay, Stephan

    Les spécialistes avancent que le marché mondial de l'énergie en forte demande et en offre limitée nécessitera bientôt toutes les formes d'énergie disponibles. Le granulé de bois est une forme de bioénergie principalement utilisée pour le chauffage des bâtiments et pourrait être davantage considéré dans l'offre énergétique du Québec. Comme le Québec est un territoire où il fait froid et donc susceptible de pouvoir se tourner vers cette forme d'énergie, l'objectif de ce mémoire est d'en analyser les avantages. Pour ce faire, nous commencerons par démontrer la croissance des besoins énergétiques sur les plans national et international et dresser un portrait des différentes formes d'énergies consommées au Québec. Puisque la majorité des Québécois chauffent leurs bâtiments à l'hydroélectricité, nous analyserons à travers le plan d'approvisionnement d'Hydro-Québec le portrait de la production et de la consommation de cette forme d'énergie renouvelable. Cela nous permettra de constater le défi face à la gestion de surplus importants, sauf pendant la période hivernale, et ce faisant, l'obligation de la société d'État d'utiliser davantage ses centrales au gaz ou de se tourner vers l'importation de l'électricité. Dans la même lignée, un regard sera porté sur les perspectives d'utilisation de l'hydroélectricité sur les plans de la production d'aluminium, de l'exportation et de l'utilisation dans l'électrification des transports au Québec. Cette analyse se fera dans l'objectif de s'interroger sur la pertinence d'utiliser cette source d'énergie dans le chauffage plutôt que dans des secteurs plus créateurs de richesse. Nous poserons ensuite l'hypothèse que le granulé de bois pourrait être un bon substitut à une autre forme d'énergie utilisée dans le chauffage, soit le mazout. Avant de dresser un portrait de ce combustible fossile, nous ferons celui de la production et de la consommation de granulés sur les plans r

  14. Le début du ive s. av. J.-C. dans l’espace culturel sénonais : les habitats de Bois d’Echalas à Ville-Saint-Jacques et de Beauchamp à Varennes-sur-Seine (Seine-et-Marne dans le contexte de l’interfluve Seine-Yonne The beginning of the 4th century BC in the the cultural space of the 'Sénonais': the settlements of Bois d’Echalas at Ville-Saint-Jacques and Beauchamp at Varennes-sur-Seine (Seine-et-Marne in the context of the land separating the Seine and the Yonne

    Directory of Open Access Journals (Sweden)

    Jean-Marc Séguier

    2008-04-01

    Full Text Available L’étude de deux habitats du début du ive s. av. J.-C. installés à proximité de la confluence Seine-Yonne permet de définir le faciès mobilier de cette partie du Bassin parisien au cours de La Tène B1a, notamment grâce à l’association d’un important cortège de céramiques locales et importées et d’un mobilier métallique significatif. L’analyse des structures de conservation et du mobilier conduit à établir une hiérarchie des établissements. Celui de Ville-Saint-Jacques, Bois d’Echalas, occupe une place prééminente dans le système social mis en place dans la région considérée, alors que celui de Varennes-sur-Seine, Beauchamp, se révèle d’un niveau inférieur. Au-delà de la comparaison entre les deux sites, c’est une lecture socio-économique de l’organisation territoriale qui est proposée.The study of two settlements of the beginning of the 4th century BC near the confluence of the Seine and the Yonne enables us to define the movable culture of this part of the Paris basin during La Tène B1a, notably because of the association of an important series of local and imported ceramics and significant metal articles. The analysis of the structures of conservation and of furniture lead to the establishment of a hierachy of settlements. That of Ville-Saint-Jacques, Bois d’Echalas, occupied a prominent place in the social system set up in the region in question, whereas that of Varennes-sur-Seine, Beauchamp, proved to be of a lower level. Beyond the comparison between the two sites, what is presented is a socio-economic lecture on territorial organisation.

  15. Stocks de bois précieux de Madagascar – quelle voie emprunter ?

    Directory of Open Access Journals (Sweden)

    Nanie Ratsifandrihamanana

    2011-12-01

    Full Text Available Après avoir culminé en 2009 et 2010, l’exploitation de bois de rose a ralenti suite à une interdiction d’exportation adoptée par le gouvernement de transition de Madagascar (HAT en réponse à la pression internationale croissante se référant au trafic illégal de bois de rose causant la destruction des forêts officiellement protégées. Le principal de ces bois précieux illégaux était destiné à la Chine. À la suite de l’interdiction d’exportation, un volume conséquent de bois de rose est à présent stocké dans les villages et les ports le long de la côte nord-est de Madagascar, sachant cependant que le volume exact n’est pas bien défini dans la mesure où l’inventaire est en cours et que le processus ouvre ainsi la possibilité d’ajouter de nouveaux bois fraîchement exploités aux stocks anciens. Cela signifie qu'il n’existe pour le moment aucune estimation précise du volume de bois précieux exploités sous un permis (et à l’extérieur des limites des aires protégées ou de manière illégale à l’intérieur des limites des aires protégées.Le 25 août 2011 une réunion se déroulant dans la région SAVA entre les représentants de la HAT et les trafiquants de bois de rose a révélé que le gouvernement voulait mettre un terme au trafic illégal et n’autorisait donc plus aucune exportation de bois de rose. Dans un avis du 12 juillet 2011, l’UNESCO a proposé d’éliminer tous les stocks dans un délai de 12 à 18 mois suivant leur saisie ; entre temps, la Banque mondiale cherchait comment vendre ces stocks de bois illégaux de façon responsable et transparente afin de financer les efforts destinés à protéger la biodiversité des forêts humides de Madagascar. À ce stade, on ne sait pas comment la HAT va gérer ce stock de bois précieux.Le journal MCD observe le processus et voudrait donner la parole à quelques experts et praticiens impliqués dans cette crise du bois de rose.

  16. Comportement en flexion de panneaux en bois lamellé croisé hétérogènes

    OpenAIRE

    Franzoni, Lorenzo; LEBEE, Arthur; Lyon, Florent; FORET, Gilles

    2015-01-01

    Dans le domaine de la construction bois, les panneaux en bois massif lamellés croisés (CLT : Cross Laminated Timber) sont de plus en plus utilisés en tant que plancher ou toiture. Ils sont composés de plusieurs couches en bois empilées et collées de façon croisée, pour obtenir des bonnes propriétés mécaniques et hygrométriques dans les deux directions.Un enjeu technologique en développement est d'enlever du bois des planchers CLT et le remplacer avec du matériau isolant afin de rendre les pan...

  17. Variation de l’épaisseur du placage de déroulage des bois et son influence sur les caractéristiques mécaniques des panneaux LVL

    Directory of Open Access Journals (Sweden)

    Daoui Abdelhakim

    2014-04-01

    Full Text Available Le LVL (Laminated Veneer Lumber est un matériau industriel très en vogue dans la construction, c’est un matériau dérivé du bois très apprécié dans la construction en ossature bois pour la faible dispersion de ses remarquables caractéristiques mécaniques, notamment en matière des contraintes axiales, pouvant aller jusqu’au double d’un bois massif.

  18. Daniel Bois (1929-2008)

    CERN Document Server

    2008-01-01

    We were deeply saddened to hear of the death of our former colleague, Daniel Bois, at his home in Crozet on 27 March, in his 79th year. Daniel Bois, trained in precision mechanics, arrived at CERN in November 1954 and was assigned to the Central Workshop. His remarkable talent for precision measurements prompted his then boss to point him in the direction of the Survey Group, which was working on the construction of the PS at the time. He remained with this Group until he retired. His flair for measurements and his constant need to create and invent led him to fabricate novel tools for aligning the magnets of the PS or the ISR, even if this meant challenging the conventional methods of the day. One of his inventions was the "distinvar", a length-measuring tool that was widely used up until the construction of LEP. We are also indebted to Daniel for the use of stretched wires to align magnets, a technique that is still intensively ...

  19. Les bois sacrés des Celtes et des Germains

    OpenAIRE

    Brunaux, Jean-Louis

    2015-01-01

    La littérature antique mentionne à plusieurs reprises l’existence de “bois sacrés” chez les Celtes comme chez les Germains. De récents travaux archéologiques, dans le domaine celtique, et dans le nord de la Gaule plus précisément, indiquent que ces bois sacrés sont en réalité, comme en Grèce et en Italie, de véritables lieux de culte fixes et structurés où l’arbre ne joue plus qu’un rôle mineur ou symbolique. L’image qui s’en dégage va parfaitement à l’encontre de la vision développée par les...

  20. Réduction de l'oxyde d'azote par la suie dans les produits de combustion Reduction of Nitric Oxyde by Soot in Combustion Products

    Directory of Open Access Journals (Sweden)

    De Soete G.

    2006-11-01

    Full Text Available On a étudié dans un réacteur à lit fixe la réduction du NO par de la suie formée dans des flammes riches de mélanges éthane/oxygène/argon. Le mélange gazeux traversant le réacteur est de l'argon dopé avec du NO; dans certains cas ce mélange est enrichi d'hydrogène ou d'oxyde de carbone. En présence d'hydrogène ou d'oxyde de carbone, ces vitesses sont nettement plus grandes qu'avec la suie seule. La comparaison avec des vitesses réactionnelles obtenues sur des lits fixes composés d'autres matériaux solides, tels que l'alumine, montre que la réduction de l'oxyde d'azote se fait principalement par une réaction hétérogène avec l'hydrogène et l'oxyde de carbone catalysée par la suie. D'autres matériaux solides,tels que des oxydes réfractaires présentent une activité catalylique aussi importante que la suie. Cette observation fournit une nouvelle explication de l'effet connu de certains additifs sur la réduction de NO dans les flammes. Dans la seconde partie de l'étude, on mesure la réduction des oxydes d'azote dans les flammes fuligineuses de prémélange. De l'argon dopé par de l'oxyde d'azote est injecté dans les produits de combustion de ces flammes chargés de suie; l'introduction du NO est faite à différentes distances derrière le brûleur, correspondant à différents niveaux de température des produits de combustion. La réduction fractionnelle des oxydes d'azote est mesurée en fonction de la concentration en suie, en hydrogène et en oxyde de carbone, en faisant varier la composition du mélange inflammable. Les résultats expérimentaux sont en bon accord avec la réduction calculée en se basant sur les informations cinétiques obtenues en lit fixe. The kinetics of nitric oxide réduction by soot collected from hydrocarbon flames is studied in a fixed-bed reactor. The gas flow traversing thé reactor is either argon with NO, or argon with hydrogen and NO, or argon with carbon monoxide and NO. In th

  1. Combustion

    CERN Document Server

    Glassman, Irvin

    1987-01-01

    Combustion, Second Edition focuses on the underlying principles of combustion and covers topics ranging from chemical thermodynamics and flame temperatures to chemical kinetics, detonation, ignition, and oxidation characteristics of fuels. Diffusion flames, flame phenomena in premixed combustible gases, and combustion of nonvolatile fuels are also discussed. This book consists of nine chapters and begins by introducing the reader to heats of reaction and formation, free energy and the equilibrium constants, and flame temperature calculations. The next chapter explores the rates of reactio

  2. Ode III, Description des bois de Jean Racine

    OpenAIRE

    De Carolis, Chetro

    2014-01-01

    Version originale Que ces vieux royaumes des ombres,Ces grands bois, ces noires forêts,Cachent de charmes et d’attraitsDessous leurs feuillages si sombres !C’est dans ce tranquille séjour 5Que l’on voit régner nuit et jourLa paix et le silence ;C’est là qu’on dit que nos aïeux,Au siècle d’innocence,Goûtaient les délices des cieux. 10 C’est là que cent longues alléesD’arbres toujours riches et verts,Se font voir en cent lieux divers,Droites, penchantes, étoilées.Je vois mille troncs sourci...

  3. Optical Engines as Representative Tools in the Development of New Combustion Engine Concepts Moteurs transparents comme outils représentatifs dans le développement de nouveaux concepts des moteurs à combustion interne

    Directory of Open Access Journals (Sweden)

    Kashdan J.

    2011-11-01

    (EGR. A comparison has been made between simulated EGR (using pure nitrogen with real EGR under Diesel LTC conditions. Finally, “pure”, single component fuels are often employed in optical Diesel engines due to laser diagnostic constraints. However, these fuels generally differ from standard Diesel fuel in terms of cetane number and fuel volatility which can significantly influence the combustion and emissions characteristics in optical engines. These aspects have also been investigated within the present study. An improved understanding of the differences between optical and all-metal engines has allowed us to develop appropriate strategies to compensate for these differences on the optical engine. It is shown here that combustion phasing (and engine-out emissions matching between optical and all-metal engines can be achieved even for advanced LTC Diesel combustion strategies. The ability to ensure fully representative combustion and emissions behaviour of optical engines ultimately increases the value of optical engine data, highlighting the importance of using such engines as research tools for the further development of innovative, low emission combustion concepts. Les moteurs monocylindres transparents sont employés comme outils de recherche et de développement des moteurs à combustion interne. Ils permettent l’utilisation de techniques de diagnostics non-intrusifs (qualitatifs et quantitatifs pour étudier des phénomènes comme l’aérodynamique interne, la préparation du mélange, la combustion et la formation de polluants. Ces données expérimentales sont importantes pour la validation des modèles numériques et permettent également d’obtenir une compréhension détaillée des phénomènes physiques se déroulant dans la chambre. Les données recueillies aident au développement des nouvelles stratégies de combustion telles que la combustion homogène (HCCI et la combustion Diesel à basse température (LTC. Dans ce contexte, il est important

  4. Prejudice: From Allport to DuBois.

    Science.gov (United States)

    Gaines, Stanley O., Jr.; Reed, Edward S.

    1995-01-01

    Examines the differences between Gordon Allport's and W. E. B. DuBois's theories on the origins of prejudice and the impact of discrimination on the personality and social development of blacks. The article argues that prejudice is a historically developed process, not a universal feature of human psychology. Implications for U.S. race relations…

  5. Chemical Looping Combustion of Solid Fuels in a Laboratory Fluidized-bed Reactor Combustion de charges solides avec la boucle chimique dans un lit fluidisé de laboratoire

    Directory of Open Access Journals (Sweden)

    Leion H.

    2011-02-01

    Full Text Available When using solid fuel in a chemical looping system, the char fraction of the fuel needs to be gasified before syngas react with the oxygen carrier. This can be done inside the fuel reactor with fuel and oxygen carriers well mixed, and, since this gasification is comparably slow, this will be the time limiting step of such a system. An option is to use an oxygen carrier that is able to release gas-phase oxygen which can react with the fuel by normal combustion giving a significantly faster overall fuel conversion. This last option is generally referred to as Chemical Looping combustion with Oxygen Un-coupling (CLOU. In this work, an overview is given of parameters that affect the fuel conversion in laboratory CLC and CLOU experiments. The main factor determining the fuel conversion, in both CLC and CLOU, is the fuel itself. High-volatile fuels are generally more rapidly converted than low volatile fuels. This difference in fuel conversion rate is more pronounced in CLC than in CLOU. However, the fuel conversion is also, both for CLC and CLOU, increased by increasing temperature. Increased steam and SO2 fraction in the surrounding gas will also enhance the fuel conversion in CLC. CO2 gasification in CLC appears to be very slow in comparison to steam gasification. H2 can inhibit fuel gasification in CLC whereas CO did not seem to have any effect. Possible deactivation of oxygen carriers due to SO2 or ash also has to be considered. Lorsque l’on utilise des combustibles solides dans la boucle chimique (CLC pour Chemical Looping Combustion, il est nécessaire de gazéifier le char avant de faire la combustion du gaz de synthèse au contact du transporteur d’oxygène. Ces réactions peuvent s’effectuer dans le réacteur fuel, dans lequel le combustible et le transporteur d’oxygène sont bien mélangés. Cependant, la gazéification du charbon est lente et reste l’étape limitante du processus de combustion dans ces conditions. Une alternative

  6. Modelling of Fluid Dynamics and Combustion in Piston Engines Modélisation de l'aérodynamique interne et de la combustion dans les moteurs à piston

    Directory of Open Access Journals (Sweden)

    Pinchon P.

    2006-11-01

    Full Text Available The physical processes which are involved in the combustion chamber of reciprocating engines are so complex, the range in characteristic length and time scales is so large that it is highly unlikely that a complete detailed description of all these phenomena by mathematical modelling will ever be available. Hence it is extremely important to state each modelling problem correctly and to select the type of model and the level of simplifications in accordance with the objectives. An example of this approach is given in the case of knock modelling. Emphasis is made on the fact that the design of a combustion model dedicated to piston engines requires a coupled theoretical and experimental approach in order to validate the numerical algorithm and the various physical sub-models involved. The general features of multidimensional models are described and the paramount of turbulence influence is pointed out. The physical submodels describing heat transfer, combustion, etc. play an important role in multidimensional modelling and are all influenced very significantly, if not controlled by the turbulence. Modelling of fluid-dynamics and combustion in reciprocating engines are discussed. La complexité des phénomènes physiques qui se produisent dans la chambre de combustion des moteurs à piston est telle, la gamme des échelles caractéristiques de temps et de longueur de ces phénomènes tellement large, qu'il est hautement improbable que l'on puisse disposer un jour d'une description complète et détaillée de l'ensemble de ces phénomènes par la modélisation mathématique. Dans ces conditions, le développement d'un modèle de calcul sur ce thème doit d'abord s'appuyer sur une définition claire et précise des objectifs visés, de manière à décider du bon niveau de simplification à adopter en fonction de ces objectifs. On donne un exemple de cette démarche dans le cas de la modélisation du cliquetis. On insiste également sur l

  7. Modos de ver. Du Bois y Fanon

    Directory of Open Access Journals (Sweden)

    Sandro Mezzadra

    2014-07-01

    Full Text Available The sovereignty of glance and the primacy of sight represent the Western modern culture far beyond its artistic expression, organizing its philosophical and political conceptuality. They deeply influence the way in which subjects are conceived and constructed in Western modernity. This is the point of departure of the long-distance dialogue between W. E. B. Du Bois and Frantz Fanon staged in the article. Their political thought and militancy developed against the background of experiences – such as slavery and colonialism – characterized by process of construction of subjectivities which appear as “anomalous” with regard to the “standards” set by Modernity.

  8. Les maisons à pans-de-bois d’Auxerre. Inventaire sommaire et analyse des maisons d’angle de rues

    Directory of Open Access Journals (Sweden)

    Françoise Burguière-Labrunie

    2003-12-01

    Full Text Available Si Auxerre est très connue pour son abbaye Saint-Germain, sa cathédrale Saint-Étienne et son école carolingienne, il paraît intéressant de s’arrêter aussi sur son habitat privé et plus particulièrement sur ses maisons à pans-de-bois dont le mode de construction est courant dans cette région forestière et dont le nombre est encore significatif aujourd’hui. De plus, en s’inscrivant dans la continuité d’un travail similaire effectué à Joigny (recensement des maisons à pan-de-bois de la ville et...

  9. Distinct roles of the polarity factors Boi1 and Boi2 in the control of exocytosis and abscission in budding yeast.

    Science.gov (United States)

    Masgrau, Aina; Battola, Andrea; Sanmartin, Trinidad; Pryszcz, Leszek P; Gabaldón, Toni; Mendoza, Manuel

    2017-09-13

    Boi1 and Boi2 (Boi1/2) are budding yeast plasma membrane proteins that function in polarized growth, and in cytokinesis inhibition in response to chromosome bridges via the NoCut abscission checkpoint. How Boi1/2 act in these two distinct processes is not understood. We demonstrate that Boi1/2 are required for a late step in the fusion of secretory vesicles with the plasma membrane of the growing bud. Cells lacking Boi1/2 accumulate secretory vesicles and are defective in bud growth. In contrast, Boi2 is specifically required for abscission inhibition in cells with chromatin bridges. The SH3 domain of Boi2, which is dispensable for bud growth and targets Boi2 to the site of abscission, is necessary and sufficient for abscission inhibition. Gain of function of the exocyst, a conserved protein complex involved in tethering of exocytic vesicles to the plasma membrane, rescued secretion and bud growth defects in boi mutant cells, and abrogated NoCut checkpoint function. Thus, Boi2 functions redundantly with Boi1 to promote the fusion of secretory vesicles with the plasma membrane at sites of polarized growth, and acts as an abscission inhibitor during cytokinesis in response to chromatin bridges. © 2017 by The American Society for Cell Biology.

  10. Air pollution emission reduction techniques in combustion plants; Technique de reduction des emissions de polluants atmospheriques dans les installations de combustion

    Energy Technology Data Exchange (ETDEWEB)

    Bouscaren, R. [CITEPA, Centre Interprofessionnel Technique d`Etudes de la Pollution Atmospherique, 75 - Paris (France)

    1996-12-31

    Separating techniques offer a large choice between various procedures for air pollution reduction in combustion plants: mechanical, electrical, filtering, hydraulic, chemical, physical, catalytic, thermal and biological processes. Many environment-friendly equipment use such separating techniques, particularly for dust cleaning and fume desulfurizing and more recently for the abatement of volatile organic pollutants or dioxins and furans. These processes are briefly described

  11. Simulations of a Circulating Fluidized Bed Chemical Looping Combustion System Utilizing Gaseous Fuel Simulation de la combustion en boucle chimique d’une charge gazeuse dans un lit fluidisé circulant

    Directory of Open Access Journals (Sweden)

    Mahalatkar K.

    2011-05-01

    Full Text Available Numerical studies using Computational Fluid Dynamics (CFD have been carried out for a complete circulating fluidized bed chemical looping combustor described in the literature (Abad et al., 2006 Fuel 85, 1174-1185. There have been extensive experimental studies in Chemical Looping Combustion (CLC, however CFD simulations of this concept are quite limited. The CLC experiments that were simulated used methane as fuel. A 2-D continuum model was used to describe both the gas and solid phases. Detailed sub-models to account for fluid-particle and particleparticle interaction forces were included. Global models of fuel and carrier chemistry were utilized. The results obtained from CFD were compared with experimental outlet species concentrations, solid circulation rates, solid mass distribution in the reactors, and leakage and dilution rates. The transient CFD simulations provided a reasonable match with the reported experimental data. Des études numériques de simulation des écoulements (CFD ont été réalisées sur un lit fluidisé circulant opérant en combustion par boucle chimique (CLC décrit dans la littérature (Abad et al., 2006 Fuel 85, 1174-1185. Si de nombreuses études expérimentales ont été conduites pour étudier le procédé CLC, les études concernant la simulation des écoulements par CFD de ce concept sont très limitées. Le système de combustion en boucle chimique simulé dans cette étude concerne la combustion d’une charge gazeuse (méthane. Un modèle 2-D à deux phases continues a été utilisé pour décrire les phases gaz et solide avec des sous-modèles détaillés pour décrire les forces d’interactions entre fluideparticule et particule-particule. Des modèles cinétiques globaux ont été intégrés pour décrire les réactions de combustion et de transformation du matériau transporteur d’oxygène. Les résultats obtenus par CFD ont été comparés aux concentrations expérimentales mesurées des diff

  12. Thermo-acoustic instabilities of high-frequency combustion in rocket engines; Instabilites thermo-acoustiques de combustion haute-frequence dans les moteurs fusees

    Energy Technology Data Exchange (ETDEWEB)

    Cheuret, F.

    2005-10-15

    Rocket motors are confined environments where combustion occurs in extreme conditions. Combustion instabilities can occur at high frequencies; they are tied to the acoustic modes of the combustion chamber. A common research chamber, CRC, allows us to study the response of a turbulent two-phase flame to acoustic oscillations of low or high amplitudes. The chamber is characterised under cold conditions to obtain, in particular, the relative damping coefficient of acoustic oscillations. The structure and frequency of the modes are determined in the case where the chamber is coupled to a lateral cavity. We have used a powder gun to study the response to a forced acoustic excitation at high amplitude. The results guide us towards shorter flames. The injectors were then modified to study the combustion noise level as a function of injection conditions. The speed of the gas determines whether the flames are attached or lifted. The noise level of lifted flames is higher. That of attached flames is proportional to the Weber number. The shorter flames whose length is less than the radius of the CRC, necessary condition to obtain an effective coupling, are the most sensitive to acoustic perturbations. The use of a toothed wheel at different positions in the chamber allowed us to obtain informations on the origin of the thermo-acoustic coupling, main objective of this thesis. The flame is sensitive to pressure acoustic oscillations, with a quasi-zero response time. These observations suggest that under the conditions of the CRC, we observe essentially the response of chemical kinetics to pressure oscillations. (author)

  13. Experimental and numerical study of the active control of jets inside combustion chambers; Etude experimentale et numerique du controle actif de jets dans des chambres de combustion

    Energy Technology Data Exchange (ETDEWEB)

    Faivre, V.

    2003-12-15

    Combustion instabilities occur when the flame heat release couples with the acoustic waves propagating in the combustion chamber. This phenomenon can lead to strong vibrations and noise but also, sometimes, to the complete combustion device failure. That is the reason why so many studies focus on the control of those instabilities. The method chosen in this study consists in an active control device (or set of actuators) having a strong effect on the mixing of the burner exhaust flow with the ambient fluid. The model configuration studied consists in a non reactive jet of air controlled by four small tangential secondary jets. Experiments have been carried out to optimize the control device geometry. The configuration identified as the most efficient, in terms of mixing enhancement, has been simulated through Large Eddy Simulations (LES). The objective of the numerical part of the present work is double. First, the numerical simulations provide a better understanding of the phenomena occurring when the control is on. Then, it is shown that LES can be considered as a tool to predict the effects of a control device on a flow. (author)

  14. Osmopriming duration in Araçá-boi seeds germination

    Directory of Open Access Journals (Sweden)

    Marcela Liege da Silva

    2016-06-01

    Full Text Available The Araca-boi is a native fruit of the Amazon region and its fruits have great potential for agro-industrial use due to the intrinsic characteristics of the pulp. The seeds are dormant and the primary cause could be due to the presence of inhibiting chemicals germination and can also be caused by the impermeability in tegument. The objective of this study was to assess the osmopriming efficiency promoted by Sucrose (C12H22O11 and Potassium Nitrate (KNO3 on germination of seeds of araca-boi in different immersion times. Thus, the seeds were osmoconditioned in following solutions: C12H22O11, KNO3 , KNO3 + C12H22O11 and H2 O, by period of 6, 12 and 24 h. Throughout of 70 days were evaluated the germination percentage and germination rate (index. The experiment is based on a completely randomized in a factorial analysis 4x3 with four replications of 10 seeds. The osmopriming of Araca-boi seed in KNO3 solution was shown to be efficient both to promote germination and the germination rate. The Araca-boi seeds osmoconditioned in KNO3 solution has an average efficiency of 99% in the germination percentage up to 70 days. The osmopriming period showed no influence on seed germination of the seeds of Araca-boi.

  15. W.E.B. DuBois and the Concepts of Race and Class.

    Science.gov (United States)

    Green, Dan S.; Smith, Earl

    1983-01-01

    Summarizes and analyzes W.E.B. DuBois's publications on race and class, particularly as he observed the relationships between White and Black Americans from about 1890 to the 1960s. Contends that DuBois's work has been seriously underrated and cites William J. Wilson's work as corroborating and extending DuBois's theories. (CJM)

  16. Combustion gas cleaning in the ceramic tile industry: technical guide; Nettoyage des fumees de combustion dans l'industrie ceramique: guide technique

    Energy Technology Data Exchange (ETDEWEB)

    Lezaun, F.J. [ENAGAS-Grupo Gas Natural (Spain); Mallol, G.; Monfort, E. [instituto de Tecnologia Ceramica, ITC (Spain); Busani, G. [Agenzia Regionale per la Prevenzione e l' Amiente, ARPA (Spain)

    2000-07-01

    This document presents a summary of a technical guide drawn up on combustion gas cleaning systems in ceramic frit and tile production. The guide describes the method to be followed for selecting the best possible solutions for reducing pollutant concentrations in different emission sources, in accordance with current regulatory requirements and the CET recommendation. There are three sources of combustion gas air emissions that need to be cleaned in ceramic tile and frit production and they are usually related to the following process stages: slip spray drying, tile firing and frit melting. The different nature of the emissions means that different substances will need to be cleaned in each emission. Thus, in spray drying and frit melting, the only species to be cleaned are suspended particles, while in tile firing, it is also necessary to reduce the fluorine concentration. The systems analysed in this guide are mainly wet cleaning systems, bag filters and electrostatic precipitators. In the study, the efficiency of these cleaning systems is compared at each emission source from a technical and economic point of view, and concrete solutions are put forward in each case, together with a list of suppliers of the technologies involved. (authors)

  17. 3-D modeling of parietal liquid films in internal combustion engines; Modelisation tridimensionnelle des films liquides parietaux dans les moteurs a combustion interne

    Energy Technology Data Exchange (ETDEWEB)

    Foucart, H.

    1998-12-11

    To simulate the air-fuel mixing in the intake ports and cylinder of an internal combustion engines, a wall fuel liquid film model has been developed for integration in 3D CFD codes. Phenomena taken into account include wall film formation by an impinging spray without splashing effect, film transport such as governed by mass and momentum equations with hot wall effects, and evaporation considering energy equation with an analytical mass transfer formulation developed here. A continuous-fluid method is used to describe the wall film over a three dimensional complex surface. The basic approximation is that of a laminar incompressible boundary layer; the liquid film equations are written in an integral form and solved by a first-order ALE finite volume scheme; the equation system is closed without coefficient fitting requirements. The model has been implemented in a Multi-Block version of KIVA-II (KMB) and tested against problems having theoretical solutions. Then in a first step, it has been compared to the measurements obtained in a cylindrical pipe reproducing the main characteristics of SI engine intake pipe flow and in a second step, it has been compared to the Xiong experiment concerning the film evaporation on a hot wall. The film behaviour is satisfactory reproduced by the computations for a set of operating conditions. Finally, engine calculations were conducted showing the importance of including a liquid film model for the simulations. (author) 54 refs.

  18. W. E. B. Du Bois: Reform, Will, and the Veil

    Science.gov (United States)

    England, Lynn; Warner, W. Keith

    2013-01-01

    While W. E. B. Du Bois is widely recognized for his contributions to the sociology of race, his contributions to the foundations of sociology are largely ignored. His sociology is based on African American reformism, a version of pragmatism, and a contingent historicism. The basic view of sociology is one that emphasizes the role of chance and…

  19. W. E. B. Du Bois: Reform, Will, and the Veil

    Science.gov (United States)

    England, Lynn; Warner, W. Keith

    2013-01-01

    While W. E. B. Du Bois is widely recognized for his contributions to the sociology of race, his contributions to the foundations of sociology are largely ignored. His sociology is based on African American reformism, a version of pragmatism, and a contingent historicism. The basic view of sociology is one that emphasizes the role of chance and…

  20. M. Mangard, "Le Sanctuaire gallo-romain du Bois l’Abbé à Eu (Seine-Maritime"

    Directory of Open Access Journals (Sweden)

    Alain Ferdière

    2010-02-01

    Full Text Available Il s’agit en fait de la publication de fouilles déjà ancienne – ce qui n’enlève évidemment rien, au contraire, aux mérites de cet ouvrage : les recherches sur le site du “ Bois-L’Abbé ” à Eu (Seine-Maritime ont en effet été conduites dans les années 1960/70 par l’auteur, et seulement complétées par quelques plus récents sondages, à l’occasion de travaux de mise en valeur, seulement en partie pris en compte ici.Il en résulte un volume présentant, à la forme comme au fond, un caractère vieillo...

  1. W. E. B. DuBois and the First Scientific Study of Afro-America.

    Science.gov (United States)

    Lange, Werner J.

    1983-01-01

    DuBois' scholarly efforts from 1894 to 1915 provided social science with its first acceptable and comprehensive analysis of Afro-American culture. DuBois should be viewed not only as the foremost pioneer of Black Studies but also as one of the founders of American social sciences. (CMG)

  2. Étude de la sociologie des exploitants de bois de rose malgaches

    Directory of Open Access Journals (Sweden)

    Hery F. Randriamalala

    2013-07-01

    Full Text Available At the start of 2009, there were 13 rosewood traders in Madagascar. By early 2012 their number had increased to 103 traders in the SAVA region alone. It has been in Antalaha that the growth of these traders has been the most explosive: the ‘original’ traders were joined by family members and also by their former wood collectors. These people were followed by newcomers, the result of which is a current total of 63 traders residing in just this urban centre. Notably, this is despite a ban on the exploiting of rosewood having been implemented in March 2010. Because of the rosewood trading community’s ongoing and concentrated activities in Antalaha, this small port could be cited as an urban centre where a faction of the community is actively challenging the State. The State dare not apply the laws implemented towards prohibiting trading of rosewood, but of course, there is a are common interests between the State and the operators. The current situation described here is not unique: it has recurred through various periods: pre-colonial, colonial and post-independence. RÉSUMÉLes exploitants de bois de rose étaient officiellement 13 au début de 2009. Leur nombre est passé à 103 pour la seule région SAVA au début 2012. Mais c’est à Antalaha que leur croissance a été la plus remarquable : les opérateurs historiques ont été rejoints par les membres de leurs familles et leurs anciens collecteurs, puis par des nouveaux venus, pour atteindre le chiffre record de 63 opérateurs dans cette seule ville, malgré l’interdiction d’exploiter le bois de rose depuis mars 2010. Cette communauté a fait d’Antalaha une ville à part à Madagascar car elle y fait jeu égal avec l’État qui n’ose lui appliquer les lois de la République, à moins qu’il n’ait conclu avec elle un mariage d’intérêt. Cette situation s’avère en outre être un invariant historique qui a remarquablement traversé les époques précoloniale, coloniale

  3. Evaluation of body surface area formulae for scaling GFR of adult renal patients: More between-subjects variability explained by DuBois&DuBois formula.

    Science.gov (United States)

    Hongwei, S; Zhili, L; Chunlei, H; Sijin, L; Zhifang, W

    2014-06-10

    Scaling glomerular filtration rate (GFR) to body surface area (BSA) has been widely accepted, and was debated in recent years. Although the indexation ability of BSA is inferior to other physiological variables, the evaluation of BSA formulae is still meaningful to clinical practice. In this study, to evaluate the indexation ability of BSA formulae, the repeated measures analyses of camerabased scintigraphy (Gates method, gGFR) and plasma-based clearance (pGFR) were used to specially focus on the between-subjects variability that tried to be minimized by GFR normalization. The patients, who were older than 18 y and suffered from renal diseases, were enrolled and grouped according to the Chinese BMI (body mass index) criteria. All patients accepted renal scintigraphy and plasma clearance examinations. The gGFR and pGFR were separately scaled to DuBois&DuBois, Boyd, Stevenson, Gehan, Haycock, Mosteller, Hu and Livingston and Lee's formula. In the repeated measures analyses, the intraclass correlation coefficient (ICC), concordance correlation coefficient (CCC) and the ratio of residual standard deviation to pooled standard deviation (RSD/PSD) were used for the evaluation. During January 2010 and May 2012, 220 patients were enrolled. The evaluated BSA formulae had well correlated results and significant differences among BMI groups. From high to low, the sequence of the correlation between BMI and BSA formula was LL, Haycock, Gehan, Boyd, Mosteller, Stevenson, Hu and DuBois&DuBois formula. Both the scaled indices (ICC and CCC) and RSD/PSD indicated that, the sequence of indexation ability of BSA equations was LivingstonDuBois&DuBois. Among the evaluated BSA formulae, DuBois&DuBois formula correlates to BMI the worst, and has the best indexation ability in scaling GFR of adult renal patients.

  4. Harms and responsibilities associated with battery-operated implants (BOI): who controls postmortem explantation?

    Science.gov (United States)

    Bramstedt, Katrina A

    2013-01-01

    The postmortem issues raised by battery-operated implants (BOI) are complex and issues of consent, setting (clinical vs research), and environmental risks have received little attention in bioethics literature. Analyzing the issues, the following are argued: (1) Patients receiving BOIs should sign a consent form that includes a requirement for postmortem explant of the device; (2) BOI consent forms should require the explanted devices be returned to their manufacturers for Returned Product Analysis; (3) Failure to explant and analyze devices from the research setting fails the research goal of generation of knowledge for the benefit of future patients; (4) Failure to explant and analyze devices from the clinical setting allows product defects to be potentially hidden from patients, families, clinicians, manufacturers, and regulatory agencies; (5) Bodies buried with BOIs potentially harm the environment; (6) Religious or philosophical objections to autopsy should not supersede the duty to explant and analyze BOIs; (7) The concepts herein for BOIs could potentially extend to non-BOI if the device has failure modes that can lead to a potentially life-threatening event or can cause permanent debilitating health issues, and the burial or cremation of the device poses environmental harm. In these situations, neither the patient (premortem) nor family (postmortem) should have the right to refuse explant.

  5. Multi-zone modelling of partially premixed low-temperature combustion in pilot-ignited natural-gas engines

    Energy Technology Data Exchange (ETDEWEB)

    Krishnan, S. R.; inivasan, K. K.

    2010-09-14

    Detailed results from a multi-zone phenomenological simulation of partially premixed advanced-injection low-pilot-ignited natural-gas low-temperature combustion are presented with a focus on early injection timings (the beginning of (pilot) injection (BOI)) and very small diesel quantities (2-3 per cent of total fuel energy). Combining several aspects of diesel and spark ignition engine combustion models, the closed-cycle simulation accounted for diesel autoignition, diesel spray combustion, and natural-gas combustion by premixed turbulent flame propagation. The cylinder contents were divided into an unburned zone, several pilot fuel zones (or 'packets') that modelled diesel evaporation and ignition, a flame zone for natural-gas combustion, and a burned zone. The simulation predicted the onset of ignition, cylinder pressures, and heat release rate profiles satisfactorily over a wide range of BOIs (20-60° before top dead centre (before TDC)) but especially well at early BOIs. Strong coupling was observed between pilot spray combustion in the packets and premixed turbulent combustion in the flame zone and, therefore, the number of ignition centres (packets) profoundly affected flame combustion. The highest local peak temperatures (greater than 2000 K) were observed in the packets, while the flame zone was much cooler (about 1650 K), indicating that pilot diesel spray combustion is probably the dominant source of engine-out emissions of nitrogen oxide (NOx). Further, the 60° before TDC BOI yielded the lowest average peak packet temperatures (about 1720 K) compared with the 20° before TDC BOI (about 2480 K) and 40° before TDC BOI (about 2700 K). These trends support experimental NOx trends, which showed the lowest NOx emissions for the 60°, 20°, and 40° before TDC BOIs in that order. Parametric studies showed that increasing the intake charge temperature, pilot quantity, and natural-gas equivalence ratio all led to

  6. The Arabidopsis RING Domain Protein BOI Inhibits Flowering via CO-dependent and CO-independent Mechanisms.

    Science.gov (United States)

    Nguyen, Khoa Thi; Park, Jeongmoo; Park, Eunae; Lee, Ilha; Choi, Giltsu

    2015-12-07

    BOTRYTIS SUSCEPTIBLE1 INTERACTOR (BOI) and its three homologs (BOIs) are RING domain-containing proteins that repress flowering. Here, we investigated how BOIs repress flowering. Genetic analysis of the boiQ quadruple mutant indicates that BOIs repress flowering mainly through FLOWERING LOCUS T (FT). BOIs repress the expression of FT by CONSTANS (CO)-dependent and -independent mechanisms: in the CO-dependent mechanism, BOIs bind to CO, inhibit the targeting of CO to the FT locus, and thus repress the expression of FT; in the CO-independent mechanism, BOIs target the FT locus via a mechanism that requires DELLAs but not CO. This dual repression of FT makes BOIs strong repressors of flowering in both CO-dependent and CO-independent pathways in Arabidopsis thaliana. Our finding that BOIs inhibit CO targeting further suggests that, in addition to modulating CO mRNA expression and CO protein stability, flowering regulation can also modulate the targeting of CO to FT.

  7. Shorelines Extracted from 1984-2015 Landsat Imagery: Petit Bois Island, Mississippi (Polygon: Combined Dates)

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — Shorelines Extracted from 1984-2015 Landsat Imagery: Petit Bois Island, Mississippi (Polygon: Combined Dates) is a polygon shapefile representing shorelines...

  8. Shorelines Extracted from 1984-2015 Landsat Imagery: Petit Bois Island, Mississippi (Polygon: Individual Dates)

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — Shorelines Extracted from 1984-2015 Landsat Imagery: Petit Bois Island, Mississippi (Polygon: Individual Dates) is a dataset consisting of 271 polygon shapefiles...

  9. Shorelines Extracted from 1984-2015 Landsat Imagery: Petit Bois Island, Mississippi (Polyline: Individual Dates)

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — Shorelines Extracted from 1984-2015 Landsat Imagery: Petit Bois Island, Mississippi (Polyline: Individual Dates) is a line shapefile representing shorelines...

  10. Shorelines Extracted from 1984-2015 Landsat Imagery: Petit Bois Island, Mississippi (Polyline: Combined Dates)

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — Shorelines Extracted from 1984-2015 Landsat Imagery: Petit Bois Island, Mississippi (Polyline: Combined Dates) is a line shapefile representing shorelines generated...

  11. Shorelines Extracted from 1984-2015 Landsat Imagery: Petit Bois Island, Mississippi (Polygon: Combined Dates)

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — Shorelines Extracted from 1984-2015 Landsat Imagery: Petit Bois Island, Mississippi (Polygon: Combined Dates) is a polygon shapefile representing shorelines...

  12. Shorelines Extracted from 1984-2015 Landsat Imagery: Petit Bois Island, Mississippi (Polygon: Individual Dates)

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — Shorelines Extracted from 1984-2015 Landsat Imagery: Petit Bois Island, Mississippi (Polygon: Individual Dates) is a dataset consisting of 271 polygon shapefiles...

  13. Shorelines Extracted from 1984-2015 Landsat Imagery: Petit Bois Island, Mississippi (Polyline: Individual Dates)

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — Shorelines Extracted from 1984-2015 Landsat Imagery: Petit Bois Island, Mississippi (Polyline: Individual Dates) is a line shapefile representing shorelines...

  14. Shorelines Extracted from 1984-2015 Landsat Imagery: Petit Bois Island, Mississippi (Polyline: Combined Dates)

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — Shorelines Extracted from 1984-2015 Landsat Imagery: Petit Bois Island, Mississippi (Polyline: Combined Dates) is a line shapefile representing shorelines generated...

  15. Religion and the Sociological Imagination of W.E.B. Du Bois

    Directory of Open Access Journals (Sweden)

    Edward J. Blum

    2005-03-01

    Full Text Available Du Bois thought that Christianity needs to free itself from the burdens of the history of slavery and harken back to what he considered the original teachings of Christ and a true renewal of Christianity.

  16. Bois-bumbás de Parintins: síntese metafórica da realidade? Bois-bumbás of Parintins: metaphoric synthesis of reality?

    Directory of Open Access Journals (Sweden)

    Lydia Maria Pinto Brito

    2010-02-01

    Full Text Available Este artigo analisa como os atores sociais internos percebem o evento dos bois-bumbás da cidade de Parintins, tendo em vista o valor que tal fenômeno representa para a comunidade local nos aspectos culturais, econômicos e sociais, e por criar um espaço onde os seus integrantes possam refletir, falar e produzir conhecimento sobre sua realidade. Procurou-se identificar a percepção dos atores sociais internos sobre a influência desse fenômeno cultural nas dimensões sistêmica e cultural do desenvolvimento local sustentável (DLS da cidade de Parintins. Os pressupostos que orientaram o estudo foram: elementos da cultura brasileira estão presentes na cultura local representada pelo contexto dos bois-bumbás; a cultura indígena amazônica dá significado aos elementos que possibilitam a construção dos bois-bumbás; e o boi-bumbá está se transformando em mercadoria subsumida às necessidades do capital. O referencial de análise baseou-se principalmente nos conceitos de DLS, modo de produção capitalista e cultura. A metodologia utilizada foi de natureza qualitativa. As conclusões sinalizam para a confirmação dos pressupostos.This article investigates on how the inside social actors perceive the boi-bumbá celebrations in the town of Parintins, Brazil, considering the value that such phenomenon represents to the local community in its cultural, economic and social aspects, as well as the opportunity for the participants to reflect on, speak about and produce knowledge on their own reality. The investigation identified how such actors perceive the influence of this social phenomenon in the systemic and cultural dimensions of the town's sustainable local development (SLD. The hypotheses that guided the study were: elements of the Brazilian culture are present in the local culture represented by the boi-bumbá context; the native Amazonian culture gives signification to the elements that allow the construction of the bois-bumbás; the

  17. Effect of Ash on Oxygen Carriers for the Application of Chemical Looping Combustion to a High Carbon Char Effet des cendres sur l’activité des porteurs d’oxygène dans la combustion du charbon en boucle chimique

    Directory of Open Access Journals (Sweden)

    Rubel A.

    2011-02-01

    activity of the OCs and both OCs performed well. The results were promising for the application of CLC directly to solid fuels. L’application de la combustion en boucle chimique (CLC aux combustibles solides est actuellement étudiée à l’Université du Kentucky, au Centre de Recherche de l’Energie Appliquée (CAER dans le but de développer un procédé de gazéification/combustion en boucle chimique pressurisé (PCLC/G afin de générer de l’électricité à partir de charbon. Un des principaux aspects de la combustion en boucle chimique de combustibles solides est la compréhension de l’effet des cendres sur la réactivité des porteurs d’oxygène (OCs. L’effet des cendres sur la capacité de transfert d’oxygène et sur l’aptitude à oxyder le charbon est étudié avec deux porteurs d’oxygène à base d’oxydes de fer. Les cendres utilisées sont des cendres volantes provenant d’une centrale thermique au charbon. Les expériences sont réalisées dans un système composé d’une thermo-balance couplée à un spectrographe de masse (TGMS dans lequel on utilise d’abord 500 mg d’un mélange de cendres/porteurs d’oxygène à différentes concentrations de cendres allant jusqu’à 75 %. Le gaz réducteur est composé de 10 % de H2, 15 % de CO, 20 % de CO2 et de 55 % de Ar; et le gaz oxydant est composé de 20 % de O2 dans Ar. Les réactions d’oxydation/réduction sont quasi totales. D’après ces expériences, les cendres ont une activité propre de porteur d’oxygène, liée à la présence de fer dans les cendres, confirmée par les analyses DRX. Cela génère une augmentation du gain ou de la perte de masse du mélange pendant l’oxydation/réduction. Les vitesses d’oxydation/réduction augmentent avec la concentration des cendres à cause de l’augmentation de la porosité du mélange de porteurs d’oxygène avec les cendres, ce qui permet un meilleur accès des gaz réactifs sur les sites actifs des porteurs d’oxygène. Dans un

  18. Proposal of a numerical modeling of reactive flows in combustion chambers of turbojet engines; Proposition d`une modelisation numerique des ecoulements reactifs dans les foyers de turboreacteurs

    Energy Technology Data Exchange (ETDEWEB)

    Ravet, F. [Rouen Univ., 76 - Mont-Saint-Aignan (France)]|[SNECMA, 77 - Moissy-Cramayel (France); Baudoin, Ch.; Schultz, J.L. [SNECMA, 77 - Moissy-Cramayel (France)

    1996-12-31

    Simplifying hypotheses are required when combustion and aerodynamic phenomena are considered simultaneously. In this paper, a turbulent combustion model is proposed, in which the combustion chemistry is reduced to a single reaction. In this way, only two variables are needed to describe the problem and combustion can be characterized by the consumption of one of the two reactive species. In a first step, the instantaneous consumption rate is obtained using the Lagrangian form of the mass fraction equation of the species under consideration, and by considering the equilibrium state only. This state is determined in order to preserve the consistency with results that should be obtained using a complete kinetics scheme. In a second step, the average rate is determined using the instantaneous consumption term and a probabilistic density function. This model was tested on various configurations and in particular on an experimental main chamber and on a reheating chamber. Results indicate that this model could be used to predict temperature levels inside these combustion chambers. Other applications, like the prediction of pollutant species emission can be considered. (J.S.) 12 refs.

  19. Genetic and chemical comparison of Boi (Sinomeni Caulis et Rhizoma) and Seifuto (Caulis Sinomenii).

    Science.gov (United States)

    Sano, Tomoko; Matsumura, Ikue; Nakamura, Rie; Yamaji, Hiroki; Hashimoto, Kazunori; Takeda, Osami; Kiuchi, Fumiyuki; Takeda, Tadahiro

    2010-07-01

    Boi and its original plant Sinomenium acutum from Japan were compared with Seifuto and its botanical origins from China in terms of their internal transcribed spacer (ITS) sequences and major chemical components. Boi, Seifuto, and their botanical origins overall showed seven variable sites in the ITS sequence and six genotypes. Japanese S. acutum and Boi had one nucleotide variation at position 593 to show two genotypes (J1 and J2) and their heterozygote (J3). Seifuto samples and their botanical origins, S. acutum and S. acutum var. cinereum from China, showed three genotypes (C1, C2, and C3), which did not agree with the botanical classification, indicating that they cannot be distinguished according to their ITS sequences. All Seifuto samples from Henan market showed the same ITS genotype (C1). The Japanese and Chinese genotypes differed in the nucleotide position 424, which can be used to distinguish the country of origin of these materials. In the HPLC analysis of six major components, sinomenine (1), magnoflorine (2), menisperine (3), 6-O-methyllaudanosoline glucoside (4), liriodendrin (5), and menisdaurin (6), all were detected in Boi, whereas five (all except for menisdaurin) were detected in Seifuto. The main component in the rhizome of Seifuto was sinomenine, whereas magnoflorine was the main component in the rhizome and the climbing stem of Boi. The content of sinomenine in Seifuto was almost twice that in Boi. Although the individual content of alkaloids 1-4 differed between Boi and Seifuto, the total contents of these alkaloids were comparable between them both in the climbing stem and rhizome.

  20. Burners. The decrease of nitrogen oxides in combustion process: the 2 nd generation GR LONOxFLAM burner; Les bruleurs, la reduction des oxydes d`azote dans la combustion: bruleur GR LONOxFLAM de 2. generation

    Energy Technology Data Exchange (ETDEWEB)

    Gauthier, J.C. [EGCI Pillard, 13 - Marseille (France)

    1997-12-31

    The Pillard company has developed, in cooperation with GDF (the French national gas utility), the GR-LONOxFLAM burner concept for reducing NOx emission levels and solid combustion products. The concept consists, for gaseous fuels, in the combination of an internal recirculation and a gas staging process; for liquid fuels, a separated flame process and air staging are combined. These concepts allow for an important reduction in NOx and non-burned residues, even with standard-size burners

  1. Contribution to the study of the combustion-deflagration-detonation transition in a condensed explosive; Contribution a l`etude de la transition combustion-deflagration-detonation dans un explosif condense

    Energy Technology Data Exchange (ETDEWEB)

    Fleuret, F.; Nicollet, M. [CEA Vaujours-Moronvilliers, 77 - Courtry (France)

    1996-12-31

    The combustion-deflagration-detonation transition is studied in a weakly porous X1 octogene-based explosive composition. The essential role of the explosive confinement which allows to observe these transitions is demonstrated. No deflagration-detonation transition is observed with the X1 composition during its thermal priming configuration. However, a low-velocity particular regime is observed and studied in details. (J.S.) 11 refs.

  2. Clinical and Immunomodulatory Effect of Fun-boi, an Herbal Medicine, in Rheumatoid Arthritis.

    Science.gov (United States)

    Niizawa, A; Kogure, T; Fujinaga, H; Takahashi, K; Shimada, Y; Terasawa, K

    2000-10-01

    Crude preparations of Fun-boi (Fen-fan-ji in Chinese), a traditional anti-rheumatic herb, have been used safely over millennia. To begin to study the efficacy of Fun-boi on the disease activity and the peripheral lymphocyte subsets, we performed a 12-week, open-label trial of Fun-boi extract (a decoction of Fun-boi 10 g/day) in 29 patients with rheumatoid arthritis (RA). Most clinical and immunological variables: swollen joint count, physician's and patient's assessment, pain score and IgM rheumatoid factor, showed statistically significant improvement. Seven (24%) of the enrolled patients met the American College of Rheumatology (ACR) criteria for a 20 percent improvement in measures of disease activity (ACR20) and 3 (10%) met those for ACR50. The CD3+CD8+ lymphocytes were increased significantly. Accordingly, the CD4/CD8 ratio was decreased; however, these changes did not show any clear correlation with clinical response. Two patients (7%) experienced some minor transient adverse events. In conclusion, Fun-boi is safe and showed beneficial effect in some patients for the treatment of the relatively mild RA seen in the patients studied. Further controlled studies are indicated. Clinicians should keep an open mind about possible benefits of these still incompletely studied herbal agents.

  3. COMPORTEMENT D’UN COMPOSITE FINE MINERALE - CIMENT - BOIS ELABORE A L’AIDE DE DECHETS INDUSTRIELS SOLIDES

    Directory of Open Access Journals (Sweden)

    M.L BENMALEK

    2000-06-01

    Full Text Available Cinq fines minérales de différentes natures minéralogiques et de limites granulaires comparables, provenant de résidus de carrières, ont été traitées pour former le squelette de bétons légers d'isolation. L'allégement et le pouvoir isolant de ces bétons sont obtenus par incorporation de granulats de bois dans la matrice constituée de la fine minérale et de ciment CPA. Dans une première partie, sont présentés les principales caractéristiques de ces fines: minéralogie par diffraction des rayons X, granulométrie laser, conductivité thermique à la sonde TPS, densité sèche par  pycnomètrie à eau et morphologie au MEB. La seconde partie est consacrée à l'étude de l'effet des caractéristiques de ces fines sur le comportement hygrothermique et mécanique de ces bétons élaborés avec une même formulation et un même état de consistance au moulage. Les résultats de ces investigations sont comparés entre eux et  à ceux de matériaux usuels classés par la RILEM.

  4. Ihog and Boi elicit Hh signaling via Ptc but do not aid Ptc in sequestering the Hh ligand.

    Science.gov (United States)

    Camp, Darius; Haitian He, Billy; Li, Sally; Althaus, Irene W; Holtz, Alexander M; Allen, Benjamin L; Charron, Frédéric; van Meyel, Donald J

    2014-10-01

    Hedgehog (Hh) proteins are secreted molecules essential for tissue development in vertebrates and invertebrates. Hh reception via the 12-pass transmembrane protein Patched (Ptc) elicits intracellular signaling through Smoothened (Smo). Hh binding to Ptc is also proposed to sequester the ligand, limiting its spatial range of activity. In Drosophila, Interference hedgehog (Ihog) and Brother of ihog (Boi) are two conserved and redundant transmembrane proteins that are essential for Hh pathway activation. How Ihog and Boi activate signaling in response to Hh remains unknown; each can bind both Hh and Ptc and so it has been proposed that they are essential for both Hh reception and sequestration. Using genetic epistasis we established here that Ihog and Boi, and their orthologs in mice, act upstream or at the level of Ptc to allow Hh signal transduction. In the Drosophila developing wing model we found that it is through Hh pathway activation that Ihog and Boi maintain the boundary between the anterior and posterior compartments. We dissociated the contributions of Ptc from those of Ihog/Boi and, surprisingly, found that cells expressing Ptc can retain and sequester the Hh ligand without Ihog and Boi, but that Ihog and Boi cannot do so without Ptc. Together, these results reinforce the central role for Ptc in Hh binding in vivo and demonstrate that, although Ihog and Boi are dispensable for Hh sequestration, they are essential for pathway activation because they allow Hh to inhibit Ptc and thereby relieve its repression of Smo.

  5. Case report: restoration of edentulous mandible with 4 BOI implants in an immediate load procedure.

    Science.gov (United States)

    Ihde, Stefan; Eber, Miroslav

    2004-12-01

    Dental implants for insertion from the lateral aspects of the jaw bone have been described repeatedly, since 1972. Long term results have been reported. Due to their design, BOI-Implants (basal osseointegration) can be installed even in those cases, where the vertical bone supply is reduced. This applies to the distal areas of the maxilla and the mandible. Furthermore, BOI-implants allow immediate loading as long as a balanced masticatory function can be achieved and maintained. This paper reports on the steps taken to install a full lower bridge in 4 BOI-implants and restoration in a patient with a circular bridge. The bridge was made from CoCr-Alloy and covered with acrylic resin. This treatment technique reduces costs and treatment time by about 50% compared to conventional techniques.

  6. A Comprehensive Model for Liquid Film Boiling in Internal Combustion Engines Un modèle complet pour l’ébullition de film liquide dans les moteurs à combustion interne

    Directory of Open Access Journals (Sweden)

    Habchi C.

    2010-04-01

    Full Text Available In this paper, the main physical processes governing the nucleate and transition regimes of the boiling of a liquid film were reviewed from the available experimental observations in the literature. The physical tendencies observed in most experiments have been used to develop a comprehensive phenomenological Liquid Film Boiling (LFB model which allows the calculation of the vaporization of liquid films in the nucleate boiling regime as well as in the transition boiling regime. These regimes are identified by the temperatures of saturation, Nukiyama and Leidenfrost. A particular attention has been made concerning the estimation of Leidenfrost and Nukiyama temperatures as a function of the ambient gas pressure. Several curves of lifetime of rather bulky droplets deposited on a hot surface under various conditions and chosen among those which are available in the recent literature have been used for the validation of the LFB model. The numerical results show that the orders of magnitude and the tendencies observed experimentally are well respected. Particularly, the LFB model reproduces well the progressive disappearance of the Leidenfrost regime observed in experiments with sufficiently high gas pressures. In addition, the gradual increase of the vaporization rate with wall roughness which was previously observed experimentally near the Leidenfrost point has been correctly predicted by the LFB model. Dans cet article, les principaux processus physiques, régissant les régimes d’ébullition nuclééeet de transition d’un film liquide, ont été examinés à partir des observations expérimentales disponiblesdans la littérature. Les tendances physiques observées, ont été utilisées, pour développer un modèle phénoménologique complet pour l’ébullition de film liquide (LFB. Celui-ci permet le calcul de sa vaporisation, dans le régime d’ébullition nucléée, ainsi que, dans le régime d’ébullition de transition. Cesrégimes sont

  7. Oxidation and Reduction of Iron-Titanium Oxides in Chemical Looping Combustion: A Phase-Chemical Description Oxydation et réduction des minerais de fer-titane dans la combustion en boucle chimique

    Directory of Open Access Journals (Sweden)

    den Hoed P.

    2011-05-01

    Full Text Available Ilmenite (FeTiO3 is being explored as an oxygen carrier in chemical looping processes. Its reduction and oxidation are described by the system Fe-Fe2O3-TiO2-Ti2O3. The phase diagram at 1 000°C, presented here, offers a useful tool for predicting reactions and their products. We see that Fe2TiO5 (pseudobrookite and TiO2 (rutile form a stable phase assemblage following the oxidation of FeTiO3 (ilmenite in air. The subsequent reduction of Fe2TiO5 at oxygen partial pressures of 10-15.5atm stabilizes Fe1.02Ti0.98O3, a solid solution of ilmenite. Further reduction will produce metallic iron, which compromises the integrity of the oxygen carrier for chemical looping processes. We speculate that the reduction of Fe-Ti oxides in several practical instances does not reach completion (and equilibrium under the imposed atmospheres operating in fuel reactors. L’ilménite (FeTiO3 est considéré comme un transporteur d’oxygène potentiel pour les procédés en boucle chimique. Ses mécanismes de réduction et d’oxydation sont décrits à travers le système Fe-Fe2O3-TiO2-TiO3. Le diagramme de phase à 1 000°C, présenté ici, est un outil utile pour prédire les réactions et les produits. Nous constatons que Fe2TiO5 (pseudobrookite et TiO2 (rutile forment un assemblage de phase stable après oxydation de l’ilménite (FeTiO3 dans l’air. La réduction subséquente de Fe2TiO5 à la pression partielle de 10−15,5atm stabilise vers Fe1.02Ti0.98O3, une solution solide d’ilménite. Une réduction plus poussée va produire du fer métallique et compromettre l’intégrité du transporteur d’oxygène dans la boucle chimique. Il est probable que la réduction des oxydes Fe-Ti ne soit pas, en pratique, complète et n’atteigne pas l’équilibre dans les conditions rencontrées en opération dans les réacteurs de réduction.

  8. Multi-Dimensional Modeling of Combustion and Pollutants Formation of New Technology Light Duty Diesel Engines Modélisation multidimensionnelle de la combustion et de la formation des polluants dans les nouveaux moteurs diesel automobiles

    Directory of Open Access Journals (Sweden)

    Belardini P.

    2006-12-01

    Full Text Available In the present paper some results, obtained by the use of modern numerical CFD tools, are presented. In particular, starting from the experimental characterization of a common rail DI Diesel engine, the empirical constants of the different submodels were tuned to obtain satisfactory results in some key test conditions. The main constraints of numerical models, to obtain a right scaling of pollutants predictions in the different test cases are analyzed. The numerical analysis demonstrates that the numerical CFD tools, at their stage of development, can help the engine designers to define the more promising strategies to obtain tailpipe emission control of common rail Diesel DI engines. Dans cet article, nous présentons les résultats obtenus en utilisant des outils de simulation de la mécanique des fluides numérique (CFD. À partir de résultats expérimentaux issus de la caractérisation d'un moteur Diesel common rail, les constantes empiriques de divers modèles ont été ajustées afin d'obtenir des résultats satisfaisants pour des cas tests représentatifs. Les principales contraintes des modèles numériques pour obtenir une bonne précision dans les différents cas d'études sont ici analysées. Cette analyse numérique montre que la CFD permet déjà, au stade de développement atteint, d'aider les ingénieurs à définir les stratégies les plus prometteuses pour maîtriser les émissions à l'échappement des moteurs Diesel à injection common rail.

  9. Coli see des Bois-Francs Victoriaville, Quebec : major retrofit

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2005-07-01

    This profile presented details of a major retrofit of the Colisee des Bois-Francs Ice Rink in Victoriaville, Quebec. The retrofit included the recovery of heat rejected from the refrigeration system; extensive integration of the refrigeration system with heating, ventilation, and dehumidification systems; short-term heat storage; and the installation of a variable condensing temperature and pressure system. Characteristics of the arena were presented, including details of annual energy consumption, energy costs, and the surface area of the building, which was built in 1978. Annual energy costs for the building were estimated at $90,000. The overall cost of the retrofit was $693,300, with technical support provided by the CANMET Energy Technology Centre. Two factory-built commercial refrigeration systems were installed using floating head pressure. Heat transfer fluid in the cold secondary loop was a mixture of water and methanol, while the warm secondary loop contained a mixture of water and ethylene glycol. Energy efficiency measures included using condensation heat rejected in the warm secondary loop and transferred through a coil in the ventilation duct. A simplified system schematic was presented. Building energy consumption savings were estimated at 14 per cent savings for 50 per cent greater cooling capacity compared with the previous system. The use of modular package refrigeration units confined the refrigerant in the mechanical room and reduced the amount of refrigerant required by 70 per cent. Potential refrigerant leaks were also reduced. With the older system, leaks accounted for 120 t equivalent of carbon dioxide (CO{sub 2}) released per year. Additional benefits of the new system include better quality ice, a more reliable system and greater comfort for spectators. 2 figs.

  10. Ignition et oxydation des particules de combustible solide pulvérisé Ignition and Oxidation of Pulverized Solid Fuel

    Directory of Open Access Journals (Sweden)

    De Soete G. G.

    2006-11-01

    élais d'ignition ont été déterminés pour un grand nombre de combustibles solides de rang inférieur et supérieur (charbons, cokes, asphaltènes, suies, bois, graphite. L'étude de la vitesse expérimentale de la combustion hétérogène, notamment l'étude de la température apparente d'activation, et sa dépendance par rapport à la taille des particules et à la concentration d'oxygène, montre que, dans les conditions des essais, cette combustion est contrôlée par la désorption du CO et se déroule principalement en régime cinético-diffusionnel mixte. L'étude de la dépendance des délais d'ignition par rapport à la température, la taille des particules et la pression partielle d'oxygène, suggère que, pendant ces délais, les réactions se déroulent en régime cinétique pur et que le produit des réactions de désorption est principalement le CO. The heated-grid method is used to investigate the competition between (1 the devolatilization and subsequent oxidation of pyrolysis products and (2 the ignition of the solid matrix and its rapid combustion. A comparison between the instant of ignition and the start of pyrolysis is used to determine the range in which ignition of a pyrolyzable solid fuel of the whole coal ignitiontype (i. e. when ignition occurs before pyrolysis becomes measurable occurs as a function of temperature, particle size and oxygen concentration. The results suggest that this type of ignition might occur, as a general rule, under conditions involving pulverized solid fuels in industrial flames. In the case of whole coalignition, the rate of combustion of the solid matrix is inhibited during the period following ignition. This inhibition is due partly to the difficulty oxygen has of spreading through the pores during the discharge of pyrolysis products and partly to preferential oxygen consumption during the oxidation of pyrolysis products, mainly when this oxidation develops in the form of flames. t is only when pyrolysis ends that

  11. Thermally accurate LES of the stability-emission performance of staged gas-turbine combustion; Simulation aux grandes echelles de la combustion etagee dans les turbines a gaz et son interaction stabilite-polluants-thermique

    Energy Technology Data Exchange (ETDEWEB)

    Schmitt, P.

    2005-06-15

    Modern gas turbines use turbulent lean partially premixed combustion in order to minimise nitrous oxide (NO{sub X}) emissions while ensuring flashback safety. The Large-Eddy Simulation (LES) of such a device is the goal of this work. Focus is laid on correctly predicting the NO{sub X} emissions, which are influenced by four factors: heat transfer, mixing quality, combustion modelling and thermo-acoustic stability. As NO{sub X} reaction rates are strongly influenced by temperature, heat transfer by radiation and convection is included. Radiation is predicted by a model, which assumes that the gases are optically thin. Convective heat transfer is included via a newly developed and validated wall-function approach based on the logarithmic law of the wall for temperature. An optimised 2-step reduced chemical reaction scheme for lean methane combustion is presented. This scheme is used for the LES in conjunction with an additional third reaction, fitted to produce the same NO{sub X} reaction rates as in the complete reaction mechanism. Turbulence is accounted for with the thickened flame model in a form, which is optimised for changing equivalence ratios and mesh-resolutions. Mixing is essential not only for predicting flame stabilisation, but also for pollutant emissions as NO{sub X} reaction rates depend exponentially on equivalence ratio. Therefore the full burner geometry, including 16 fuel injections is resolved in LES. Additionally, effusion cooling and film cooling is accounted for in a simplified manner. The non-reacting flow is extensively validated with experimental results. As mixture-fraction fluctuations do not only arise from turbulence, but also from thermo-acoustic instabilities, care was taken to provide acoustic boundary conditions that come close to reality. The resulting LES shows a strong thermo-acoustic instability, comparing well with experimental observations. By making the boundaries completely anechoic it is shown that when the instability

  12. Development of reduced kinetic schemes for the description of pollutants formation in combustion; Mise au point de schemas cinetiques reduits pour decrire la formation des polluants dans la combustion

    Energy Technology Data Exchange (ETDEWEB)

    Ferrendier, M.

    1998-12-17

    The typical dimensions of details chemical-kinetic mechanisms proposed to describe combustion systems are too large for multi-dimensional computations applications. The objective of reduction methods is to construct low-dimensional schemes that can be incorporated in industrial codes. We consider here a new class of methods based on a mathematical analysis of the detailed chemical-kinetic mechanisms, and the identification of a low-dimensional manifold that describes the slow dynamics of the chemical system. The mathematical reduction methods considered in this work are the Intrinsic Low Dimensional Manifold (ILDM) method proposed by Maas and Pope (1992), and the Singular Perturbation (PS) method proposed by Duchene and Rouchon (1996). The domain of validity of the ILDM or PS reduced schemes is limited to a high temperature domain T {>=} T{sub c}. This result suggests that ignition is out of the domain of application of reduced mechanisms. In the case of a CO/H{sub 2}/N{sub 2}-air combustion system, and using a two-dimensional slow manifold, we find T{sub c} {approx} 750 K. We also find that for that particular system, 2 progress variables are sufficient for an accurate description of the structure and the velocity of a laminar premixed flame. In the case of a CH{sub 4}-air combustion system, and using a two-dimensional slow manifold, we find T{sub c}{approx}1500 K. We also find that 2 progress variables are insufficient for an accurate description of the structure and the velocity of a laminar premixed flame. The study of the different NO formation mechanisms show that the thermal NO mechanism (the Zeldovich mechanism) is dominant for premixed configurations with lean or stoichiometric conditions ({phi}){>=}1.2), and for non-premixed configurations at high temperatures and high pressures (T{sub air}{>=}1000 K, P {>=} 10 bars). Under these conditions, the MPKIVA sub model used to describe NO formation in the IFP version of the KIVA code performs reasonably well. An

  13. KOMPOSISI DAN AKTIVITAS ANTIBAKTERI ASAP CAIR SABUT KELAPA YANG DIBUAT DENGAN TEKNIK PEMBAKARAN NON PIROLISIS Composition and Antibacterial Activity of Liquid Smoke of Coconut Fiber Made by NonPirolisis Combusting Technique

    Directory of Open Access Journals (Sweden)

    Feti Fatimah

    2012-05-01

    Full Text Available Food preservation by liquid smoke was one of the food conservation techniques that was easy to be conducted.Nonetheless, it was difficult in reality for people to product liquid smoke because of the complicated process in making pirolisis tools. This study was conducted to learn how to make liquid smoke by non pirolisis technique using the basic material of coconut fiber. And then, it must be performed in the liquid smoke, the redistilation and the adsorption process using active carbon. The quality of liquid smoke was examined by observing the components using Gas chromatography-Mass Spectrophotometry (GC-MS and performing test of antibacterial activity to three kinds of bacterias: Salmonella choleraeaeus, Bacillus subtilus, and Staphylococcus aureus using technic of well in the PCA media of 108/ml in population. Based on the study results, it was found that the original liquid smoke (without redistilation and adsorption process using active carbon consisted at least of 21 components, redistilated liquid smoke consist at least of 31 components, and adsorpted liquid smoke using active carbon consisted at least of 5 components. From the result of test of antibacterial activity, it was found that the redistilated liquid smoke showed better bacterial activity than in the original liquid smoke, whereas the absorpted liquid smoke using active carbon had the smallest activity among them. It was because of the content of the 2-methoxiphenol compound in the redistilated liquid smoke was the highest among them. And based on this phenomena, it was found that redistilation technique could increase the quality of liquid smoke of coconut fiber made by non pirolisis combusting method. ABSTRAK Pengawetan menggunakan asap cair merupakan salah satu teknik pengawetan bahan pangan yang mudah diaplikasikan.Meskipun demikian, pada kenyataannya, masyarakat kesulitan memproduksi asap cair dikarenakan sulitnya membuat peralatan pirolisis. Penelitian ini dilakukan guna

  14. The Double-Consciousness of Du Bois & the "Mestiza Consciousness" of Anzaldua.

    Science.gov (United States)

    Martinez, Theresa A.

    2002-01-01

    Suggests that W.E.B. Du Bois' concept of the "double-consciousness" and Gloria Anzaldua's concept of the "mestiza consciousness" are significant forms of oppositional culture and consciousness. Asserts that their two concepts are linked and nuanced ideas that describe interlocking systems of oppression spanning two centuries and arguably binding…

  15. Of Faith and Fiction: Teaching W. E. B. Du Bois and Religion

    Science.gov (United States)

    Sinitiere, Phillip Luke

    2012-01-01

    W. E. B. Du Bois (1868-1963) is widely known as a champion for the political rights of African Americans, founder of the National Association for the Advancement of Colored People (NAACP), aggressive advocate of Pan-Africanism, staunch supporter of female suffrage, and one of the creative forces behind the Harlem Renaissance. Further still, Du…

  16. The Double-Consciousness of Du Bois & the "Mestiza Consciousness" of Anzaldua.

    Science.gov (United States)

    Martinez, Theresa A.

    2002-01-01

    Suggests that W.E.B. Du Bois' concept of the "double-consciousness" and Gloria Anzaldua's concept of the "mestiza consciousness" are significant forms of oppositional culture and consciousness. Asserts that their two concepts are linked and nuanced ideas that describe interlocking systems of oppression spanning two centuries…

  17. W.E.B. Du Bois: Role Model and Mentor for African American Undergraduate Men.

    Science.gov (United States)

    Rowley, Larry L.

    2001-01-01

    With the dearth of African American men in academe, African American college men have few opportunities to be mentored by those who can best help them make sense of their experience. Du Bois' writings give voice to much of the African American college experience and provide concrete examples of how to think, act, and persevere in the U.S.…

  18. The Scholar as Change Agent: W.E.B. Du Bois

    Science.gov (United States)

    Ogden, William R.; Hill, Catherine B.

    2007-01-01

    W.E.B. Du Bois spent the vast majority of his 95 years working for the hearts and minds of Americans. Although consumed with equal rights and opportunity for Blacks, his larger vision was of a world in which all persons could progress as far as their unique knowledge, ability and efforts would permit. Intellectual and largely inward directed Du…

  19. W.E.B. Du Bois's Talented Tenth: A Quantitative Assessment.

    Science.gov (United States)

    Battle, Juan; Wright, Earl, II

    2002-01-01

    Investigated whether the Talented Tenth (college-educated African Americans) currently engaged in community leadership activities related to W.E.B. Du Bois' charge to provide leadership for the masses. Data from the 1993 National Black Politics Study indicated that Talented Tenth members currently and significantly engaged in political and…

  20. Review of Ethics in Mental Health Research by James M. DuBois

    Directory of Open Access Journals (Sweden)

    Pies Ronald

    2008-04-01

    Full Text Available Abstract The burgeoning field of medical ethics raises complicated questions for mental health researchers. The critical issues of risk assessment, beneficence, and the moral duties researchers owe their patients are analyzed in James DuBois's well written Ethics in Mental Health Research.

  1. The Legacy of W. E. B. DuBois for Contemporary Black Studies.

    Science.gov (United States)

    Stewart, James B.

    1984-01-01

    Analyzes the writings and career of W.E.B. DuBois to reconstruct an historical exemplar for Black Studies. Emphasizes the diversity of the leader's thought and roles in relation to the various methodologies used in Black Studies. Argues that such "restoration" work is needed to facilitate further maturation of the discipline. (KH)

  2. Race, Economics, and Public Policy with Reflections on W. E. B. DuBois

    Science.gov (United States)

    Henderson, Vivian W.

    1976-01-01

    Outlines a partial framework of the range of concerns embraced by DuBois on matters pertaining to economic disadvantagement of black people, and offers some analysis of what the evolutionary process has yielded black people as economic participants and the implications of these facts for public policy today and tomorrow. (Author/JM)

  3. W.E.B. DuBois's Challenge to Scientific Racism.

    Science.gov (United States)

    Taylor, Carol M.

    1981-01-01

    Proposes that a direct and authoritative challenge to the scientific racism of the late eighteenth and early twentieth centuries was urgently needed, and was one of the leading rhetorical contributions of W.E.B. DuBois. Specifically examines three issues: social Darwinism, the eugenics movement, and psychologists' measurement of intelligence.…

  4. Psychic Duality of Afro-Americans in Novels of W. E. B. DuBois.

    Science.gov (United States)

    Stewart, James B.

    1983-01-01

    Examines treatment of "double-consciousness" in DuBois' novels in the light of (1) the extent to which it provides Blacks with a vision unavailable to non-Blacks; (2) the nature and strength of cultural ties that bind Blacks together; and (3) the process by which liberation of the Black psyche is achieved. (CMG)

  5. ....Or Just a Beginning? The Social Contract of W.E.B. DuBois.

    Science.gov (United States)

    Hamilton, Charles V.

    1986-01-01

    Considers the writings of W.E.B. DuBois, especially "The Philadelphia Negro," and its relevance to racial relations today, emphasizing a social contract between Black Americans and their country. While the situation has changed substantially, the parties are still involved in negotiations as vital as those of 1899. (LHW)

  6. A Review of the W. E. B. DuBois Conference on Black Health

    Science.gov (United States)

    Reid, John D.; Lee, Everett S.

    1977-01-01

    The consensus that emerged from the W. E. B. DuBois Conference on Black Health, held at Atlanta University in December of 1976 was that we are in the midst of a period of stagnation in regard to the improvement of black health. (Author)

  7. Science and internationalism in Germany: Helmholtz, Du Bois-Reymond and their critics

    NARCIS (Netherlands)

    Wegener, F.D.A.

    2009-01-01

    In the wake of the Franco-Prussian war, scientific nationalism became a subject of scientific controversy in Germany. This paper explores the controversy between the cosmopolitan physiologists Hermann von Helmholtz and Emil du Bois-Reymond on the one hand, and the nationalistic economist-philosopher

  8. Du Bois and Frazier: A Sociological Look at the Quality of Life in the Black Family in America

    Directory of Open Access Journals (Sweden)

    Cassandra Walston

    2010-06-01

    Full Text Available Du Bois and Frazier studied the Black family from a perspective that integrated sociological and historical analysis. Du Bois and Frazier analyzed the progression of the Black family from slavery to emancipation to the Jim Crow era. In the late 1890's Du Bois looked at the social structure of the Black community and painted a picture of a group of people who were uneducated and poverty stricken. Frazier provided a more positive spin. He documented a change in the 1920's -1930's that showed upward mobility, more educational attainment, property ownership, better jobs, better living conditions, and a less segregated environment in the North.

  9. Récupération du platine contenu dans les piles à combustible basse température par voie hydrométallurgique Platinum Recovery from used PEMFC by hydrometallurgy

    Directory of Open Access Journals (Sweden)

    Vincent Denis

    2013-11-01

    Full Text Available La récupération du platine contenu dans la couche catalytique des piles à combustible est nécessaire pour viabiliser cette technologie vers le secteur industriel. Dans cette étude la voie purement hydrométallurgique a été privilégiée au procédé de récupération pyrométallurgique, évitant la destruction des autres constituants de la pile (membrane, … et limitant la formation de gaz toxique. Le procédé mise en œuvre est constitué d'une étape de lixiviation à partir d'un mélange HCl/HNO3, suivie par la précipitation d'un sel de platine (NH42PtCl6 pouvant soit servir à la synthèse d'un nouveau catalyseur soit à l'obtention de platine métallique. Sur l'ensemble de la chaîne un rendement de récupération de plus de 80 % a pu être obtenu mettant en avant le potentiel de cette stratégie. The recovery of platinum in the catalyst layers of PEMFCs (proton exchange membrane fuel cells is required to allow a transfer in industry. In this study, hydrometallurgical route was preferred to pyrometallurgical process, reducing both the destruction of the other components of the cell (membrane, … and the formation of hazardous gas. In this work, the process includes a leaching step from a diluted aqua regia solution, followed by a precipitation step of platinum under the (NH42PtCl6 form. This salt can be used either for the synthesis of a new catalyst or to obtain a metallic platinum. Considering these steps the recovery efficiency has been found to be over 80 %, which bring out the potential of this strategy.

  10. A Kampo Medicine, Boi-ogi-to, Inhibits Obesity in Ovariectomized Rats.

    Science.gov (United States)

    Yamakawa, Jun-Ichi; Moriya, Junji; Takahashi, Takashi; Ishige, Atsushi; Motoo, Yoshiharu; Yoshizaki, Fumihiko; Kanda, Tsugiyasu

    2010-03-01

    In women facing menopause, end of menstrual activity is accompanied by lower levels of estrogen and gradual weight gain. Postmenopausal weight gain sounds an alarm for women's health and may lead to hyperlipidemia, a lipid increase and glucose intolerance. These phenomena are connected to lifestyle-related diseases such as hypertension, type II diabetes mellitus, arteriosclerosis and metabolic syndrome, making it essential to prevent weight gain in women. A Kampo medicine, Boi-ogi-to, is traditionally used to treat obese conditions, but the mechanism has not yet been investigated. In this experiment, we tested the antiobesity properties of Boi-ogi-to in ovariectomized rats by measuring changes of serum cytokine levels and adipocytokines in fat cells. After treatment with this extract for 6 weeks (20-week-old rats), we found that there was a significant weight decrease in rats treated with Boi-ogi-to as compared with that in the control group. Serum tumor necrosis factor (TNF)-α levels increased significantly in a dose-dependent manner. Gene expression of adipose tissue in uterus also dose dependently showed a significant increase of TNF-α levels, suggesting that secretion of TNF-α by fat cells might play a role in the ability of Boi-ogi-to to inhibit weight gain. While peroxisome proliferators-activated receptor-γ and adiponectin levels did not show a significant difference as compared with those in the control, levels of mRNA expression showed a tendency to increase dose dependently. Resistin did not show any significant change. These results suggest that Boi-ogi-to might be useful for the prevention of obesity that occurs in women with reduction of estrogen.

  11. A Kampo Medicine, Boi-ogi-to, Inhibits Obesity in Ovariectomized Rats

    Directory of Open Access Journals (Sweden)

    Jun-ichi Yamakawa

    2010-01-01

    Full Text Available In women facing menopause, end of menstrual activity is accompanied by lower levels of estrogen and gradual weight gain. Postmenopausal weight gain sounds an alarm for women's health and may lead to hyperlipidemia, a lipid increase and glucose intolerance. These phenomena are connected to lifestyle-related diseases such as hypertension, type II diabetes mellitus, arteriosclerosis and metabolic syndrome, making it essential to prevent weight gain in women. A Kampo medicine, Boi-ogi-to, is traditionally used to treat obese conditions, but the mechanism has not yet been investigated. In this experiment, we tested the antiobesity properties of Boi-ogi-to in ovariectomized rats by measuring changes of serum cytokine levels and adipocytokines in fat cells. After treatment with this extract for 6 weeks (20-week-old rats, we found that there was a significant weight decrease in rats treated with Boi-ogi-to as compared with that in the control group. Serum tumor necrosis factor (TNF-α levels increased significantly in a dose-dependent manner. Gene expression of adipose tissue in uterus also dose dependently showed a significant increase of TNF-α levels, suggesting that secretion of TNF-α by fat cells might play a role in the ability of Boi-ogi-to to inhibit weight gain. While peroxisome proliferators-activated receptor-γ and adiponectin levels did not show a significant difference as compared with those in the control, levels of mRNA expression showed a tendency to increase dose dependently. Resistin did not show any significant change. These results suggest that Boi-ogi-to might be useful for the prevention of obesity that occurs in women with reduction of estrogen.

  12. The Role of Attrition and Solids Recovery in a Chemical Looping Combustion Process; Effet de l'attrition et de la recuperation des particules dans le procede de combustion en boucle chimique

    Energy Technology Data Exchange (ETDEWEB)

    Kramp, M.; Thon, A.; Hartge, E.U.; Heinrich, S.; Werther, J. [Institute of Solids Process Engineering and Particle Technology, Hamburg University of Technology, 21071 Hamburg (Germany)

    2011-03-15

    In the present work, the steady-state behavior of a Chemical Looping Combustion process of interconnected fluidized bed reactors is simulated. The simulations have been carried out in two different scales, 50 kWth and 100 MWth. Attrition model derived from small scale laboratory experiments has been employed for the prediction of the process behavior in terms of attrition and Oxygen Carrier loss. Information on Oxygen Carrier characteristics and reaction kinetics were taken from literature. Realistic circulation mass flows of Oxygen Carrier particles are obtained and Oxygen Carrier losses are quantified. The large scale process looses significantly more Oxygen Carrier than the small scale process based on the same amount of thermal energy produced. Incomplete conversion in the air reactor could be identified as a critical point. Another issue is the fuel gas bypassing the Oxygen Carrier particles through bubbles in the large scale process which leads to lowered fuel conversions. The simulations indicate that a similar performance of a pilot scale and a large scale process is not guaranteed due to the scale-up effect on fluid dynamics. Furthermore, the simulations allow an assessment of the influence of the quality of the solids recovery system on the Oxygen Carrier loss. The distribution of the losses between possible origins is investigated and different changes in the solids recovery system are discussed regarding their potential to decrease the Oxygen Carrier loss. For example, the addition of a second-stage cyclone after the air reactor of the large scale process reduces the Oxygen Carrier loss significantly. (authors)

  13. 15 Modélisation du séchage convectif et symétrique des bois d ...

    African Journals Online (AJOL)

    AKA BOKO

    In this article, we develop a drying model by using information from literature. ...... [2] - Rachel JUNG (revue par Marc Debels),''Cameroun : la filière bois'' ... B. BONOMA, M. MACHEBU SIAKA ''Experimental and theoretical study of drying.

  14. Modelization des consequences possibles de la future demande bioenergetique mondiale pour le bois et les forest en France

    Science.gov (United States)

    Joseph Buongiorno; Ronald Raunikar; Shushuai Zhu

    2011-01-01

    L’article présente une exploration, menée au moyen d’un modèle mondial de la filière-bois, de l’effet sur la filière-bois française des modifications actuelles et prévisibles de la demande mondiale en énergie issue de la biomasse. Deux scénarios contrastés sont testés. Les résultats sont mis en perspective et soulignent le conflit potentiel entre usages du bois : bois...

  15. Visualisation of Gasoline and Exhaust Gases Distribution in a 4-Valve Si Engine; Effects of Stratification on Combustion and Pollutants Visualisation de la répartition du carburant et des gaz brûlés dans un moteur à 4 soupapes à allumage commandé ; effet de la stratification sur la combustion et les polluants

    Directory of Open Access Journals (Sweden)

    Deschamps B.

    2006-12-01

    des dégagements d'énergie et des émissions de polluants très distincts. Le niveau de tumbleet l'emplacement de l'étincelle sont aussi modifiés. L'observation de la stratification telle qu'elle est réellement dans le moteur constitue un moyen pertinent pour expliquer ses performances. Les paramètres permettant d'optimiser les niveaux de NOx et d'HC peuvent en être déduits, de même que l'efficacité des stratégies de recirculation et d'injection du carburant. Les résultats des visualisations ont été confirmés par des mesures obtenues dans un moteur monocylindre muni d'une culasse conventionnelle avec la même géométrie de chambre de combustion.

  16. Methodological Triangulation and the Social Studies of Charles Booth, Jane Addams, and W.E.B. Du Bois

    Directory of Open Access Journals (Sweden)

    Shannon O'Connor

    2009-06-01

    Full Text Available Du Bois' study was funded by the University of Pennsylvania and was closely tied to the "Settlement Movement." The goal of the study was to understand the causes of the social problems of African Americans residing in the seventh ward. Du Bois gathered data and generated empirical findings that he felt would expose the oppressive nature of treatment toward African Americans. It was his hope that these findings would provide a basis for social improvement.

  17. 3d Simulation of Di Diesel Combustion and Pollutant Formation Using a Two-Component Reference Fuel Simulation 3D de la combustion et de la formation des polluants dans un moteur Diesel à injection directe en utilisant un carburant de référence à deux composants

    Directory of Open Access Journals (Sweden)

    Barths H.

    2006-12-01

    reference fuels. The contributions of the different reaction paths (thermal, prompt, nitrous, and reburn to the NO formation are shown. Finally, the importance of the mixing process for the prediction of soot emissions is discussed. En séparant calculs aérodynamiques et calculs chimiques, le modèle instationnaire de flamelet permet d'introduire des mécanismes chimiques complets qui comprennent plusieurs centaines de réactions. Ceci est indispensable pour décrire les différents processus qui ont lieu dans un moteur Diesel à injection directe (ID tels que l'auto-inflammation, la fin de la phase de prémélange partiel, la transition vers une combustion diffusive et la formation de polluants tels que les NOx et les suies. Il n'est pas nécessaire de simplifier les taux de réactions hautement non linéaires, d'autre part, la structure complète du processus de combustion est conservée. En utilisant le modèle de type Representative Interaction Flamelet (RIF, l'ensemble monodimensionnel instationnaire d'équations différentielles aux dérivées partielles est résolu en interaction avec le code CFD 3D. La solution ainsi obtenue est couplée avec les flux gazeux et le champ de mélange par l'intermédiaire de plusieurs paramètres dépendant du temps (l'enthalpie, la pression, le taux scalaire de dissipation. En retour, le modèle de flamelet fournit les concentrations moyennes des espèces chimiques, qui sont ensuite exploitées par le code CFD 3D pour calculer les champs de températures et les densités. La densité est nécessaire au code CFD 3D pour déterminer les flux turbulents et le champ de mélange. La formation des polluants est déterminée expérimentalement dans un moteur Diesel Volkswagen DI 1900. Le moteur est alimenté avec du gazole et deux carburants de référence. Un des carburants de référence est du n-décane pur. Le second est un carburant bicomposant formé de 70 % (du volume liquide de n-décane et de 30 % d'alpha-méthylnaphtalène (Idea

  18. Bois noir’: new phytoplasma disease of grapevine in Iran

    Directory of Open Access Journals (Sweden)

    Mirchenari Seyed Mehdi

    2015-01-01

    Full Text Available Recently, grapevines showing symptoms suggesting the ‘bois noir’ phytoplasma disease were observed in vineyards located in several central provinces of Iran. Polymerase chain reaction assays using phytoplasma universal primer pair P1A/P7A followed by primer pair R16F2n/R16R2 in nested PCR, confirmed the association of phytoplasmas with symptomatic grapevines. The results of RFLP analyses using HpaII, HinfI, MseI, RsaI, and TaqI restriction enzymes, indicated that grapevine phytoplasma isolates in these regions could be related to the 16SrXII group. Sequence analyses of the partial 16S rRNA gene confirmed that Iranian grapevine phytoplasmas are associated with ‘Candidatus Phytoplasma solani’. This is the first report of the ‘bois noir’ disease outbreak in Iran

  19. Drosophila Boi limits Hedgehog levels to suppress follicle stem cell proliferation.

    Science.gov (United States)

    Hartman, Tiffiney R; Zinshteyn, Daniel; Schofield, Heather K; Nicolas, Emmanuelle; Okada, Ami; O'Reilly, Alana M

    2010-11-29

    Stem cells depend on signals from cells within their microenvironment, or niche, as well as factors secreted by distant cells to regulate their maintenance and function. Here we show that Boi, a Hedgehog (Hh)-binding protein, is a novel suppressor of proliferation of follicle stem cells (FSCs) in the Drosophila ovary. Hh is expressed in apical cells, distant from the FSC niche, and diffuses to reach FSCs, where it promotes FSC proliferation. We show that Boi is expressed in apical cells and exerts its suppressive effect on FSC proliferation by binding to and sequestering Hh on the apical cell surface, thereby inhibiting Hh diffusion. Our studies demonstrate that cells distant from the local niche can regulate stem cell function through ligand sequestration, a mechanism that likely is conserved in other epithelial tissues.

  20. Whole genome phage display selects for proline-rich Boi polypeptides against Bem1p.

    Science.gov (United States)

    Hertveldt, Kirsten; Robben, Johan; Volckaert, Guido

    2006-08-01

    Interaction selection by biopanning from a fragmented yeast proteome displayed on filamentous phage particles was successful in identifying proline-rich fragments of Boi1p and Boi2p. These proteins bind to the second "src homology region 3'' (SH3) domain of Bem1p, a protein of Saccharomyces cerevisiae involved in bud formation. Target Bem1p was a doubly-tagged recombinant, Bem1([Asn142-Ile551]), which strongly interacts in ELISA with a C-terminal 75 amino acids polypeptide from Cdc24p exposed on phage. The whole yeast genomic display library contained approximately 7.7 x 10(7) independent clones of sheared S. cerevisiae genomic DNA fused to a truncated M13 gene III. This study corroborates the value of fragmented-proteome display to identify strong and direct interacting protein modules.

  1. Exogenously-induced apparent hypermineralocorticoidism associated with ingestion of "asam boi".

    Science.gov (United States)

    Hamidon, B B; Jeyabalan, V

    2006-02-01

    A 31-year-old woman presented with a one-week history of headache, generalised lethargy, weakness and poor appetite. Clinical examination showed that her blood pressure was 200/120 mmHg. On an earlier occasion, her blood pressure was found to be normal by a general practitioner whom she last visited three months earlier when she had an upper respiratory tract infection. Investigations showed hypokalaemia, suppressed serum renin and aldosterone. Further history was taken and revealed that she had been craving for guava fruits which she ate with flavoured "asam boi" (containing glycyrrhizic acid) at least three spoonfuls twice a day for the past six weeks. The hypertension and hypokalaemia resolved after two weeks of stopping the "asam boi". Her clinical picture was compatible with exogenously-induced hypermineralocortoidism.

  2. According to reports of Baron de Bois le Comte, women in Ottoman during Mahmud II.

    Directory of Open Access Journals (Sweden)

    Turgut Subaşı

    2012-06-01

    Full Text Available Women’s place and manner of lives is designated according to Islamic law in Ottoman society. Besides, the manners such as apparel, social rights, getting married and divorced of Ottoman women takes form within the frame of both Islamic law and Turkish culture.In this article, Ottoman women’s status, rights, place in social life, alteration and evolution that have been formed in a particular framework will be conveyed with the French Diplomat Baron de Bois le Comte’s point of view who occupied in the Ottoman Empire in the reign of II. Mahmud. Providing a different perspective for this reign, Baron de Bois le Comte is a diplomat who has been sent by French Foreign Affairs to Ottoman Empire with a “special mission” in order to observe, mediate and solve problems in Ottoman Empire within the time period where Egyptian Crisis which had started with the Revolt of Mehmet Ali Pasa. Baron de Bois le Comte had entered Ottoman Empire through Egypt’s Alexandria and been in several Ottoman Empire cities afterwards. Examining Ottoman Empire in detail, French diplomat reported his observations to French Minister of Foreign Affairs of the period, Mösyö Broglie, on a regular basis.This article will enables us to take a look at the Ottoman women’s status and social life outside home in XIX. Century’s first half which is prepared based on Baron de Bois le Comte’s observations and reports about Ottoman women while he was in the capital city of Ottoman Empire, Istanbul.

  3. Étude de la sociologie des exploitants de bois de rose malgaches

    African Journals Online (AJOL)

    8 juil. 2013 ... raisons de penser à l'avenir : l'intérêt économique des hommes pour la forêt était déjà ... le droit est fait pour être violé par les privilégiés (et tel est justement leur ... 2009, quatre des exploitants avaient des relations familiales .... L'EXPLOITATION DU BOIS DE ROSE, UNE AFFAIRE DE FAMILLE. L'étude ...

  4. Tratamentos pré-germinativos em sementes de araçá-boi (Eugenia stipitata

    Directory of Open Access Journals (Sweden)

    Angela Maria da Silva Mendes

    2012-09-01

    Full Text Available O araçá-boi (Eugenia stipitata é uma fruteira nativa com grande potencial agroindustrial. Suas sementes são intolerantes ao dessecamento e apresentam dormência, o que dificulta sua propagação. O objetivo do trabalho foi analisar as características de germinação das sementes de araçá-boi submetidas a diferentes tratamentos pré-germinativos: retirada parcial do tegumento, lixiviação e fracionamento. A germinação das sementes intactas e com retirada parcial do tegumento foi realizada em dois ambientes: casa de vegetação e viveiro telado com sombrite de 50%. Para a lixiviação, as sementes foram colocadas em balde e submetidas à lixiviação, em água corrente, por até 90 dias, com intervalos de 10 dias. O fracionamento das sementes foi realizado de acordo com a posição da zona meristemática de protrusão da raiz e parte aérea (fracionamento transversal e longitudinal. A retirada parcial do tegumento das sementes de araçá-boi diminui o tempo médio de germinação de 91 para 48 dias, com 100% de emergência. As sementes de araçá-boi mantidas submersas em água corrente por até 50 dias mantêm a viabilidade e o vigor. As frações de sementes que apresentam a protuberância meristemática formam plântulas normais, com as mesmas características de germinação das sementes intactas, porém os diferentes tipos de fracionamento não aceleraram nem uniformizaram a germinação das sementes.

  5. According to reports of Baron de Bois le Comte, women in Ottoman during Mahmud II.

    Directory of Open Access Journals (Sweden)

    Turgut Subaşı

    2013-02-01

    Full Text Available Women’s place and manner of lives is designated according to Islamic law in Ottoman society. Besides, the manners such as apparel, social rights, getting married and divorced of Ottoman women takes form within the frame of both Islamic law and Turkish culture. In this article, Ottoman women’s status, rights, place in social life, alteration and evolution that have been formed in a particular framework will be conveyed with the French Diplomat Baron de Bois le Comte’s point of view who occupied in the Ottoman Empire in the reign of II. Mahmud. Providing a different perspective for this reign, Baron de Bois le Comte is a diplomat who has been sent by French Foreign Affairs to Ottoman Empire with a “special mission” in order to observe, mediate and solve problems in Ottoman Empire within the time period where Egyptian Crisis which had started with the Revolt of Mehmet Ali Pasa. Baron de Bois le Comte had entered Ottoman Empire through Egypt’s Alexandria and been in several Ottoman Empire cities afterwards. Examining Ottoman Empire in detail, French diplomat reported his observations to French Minister of Foreign Affairs of the period, Mösyö Broglie, on a regular basis. This article will enables us to take a look at the Ottoman women’s status and social life outside home in XIX. Century’s first half which is prepared based on Baron de Bois le Comte’s observations and reports about Ottoman women while he was in the capital city of Ottoman Empire, Istanbul.

  6. Qualification des logiciels numériques. Application à un logiciel d'analyse de la combustion dans les moteurs à allumage commandé Qualification of Numerical Software. Application to a Software for Analysing Combustion in Spark-Ignition Engines

    Directory of Open Access Journals (Sweden)

    Vignes J.

    2006-11-01

    Full Text Available La simulation numérique est actuellement très utilisée pour étudier les systèmes physiques. Elle nécessite un programme de calcul scientifique constitué d'un modèle mathématique représentatif du problème étudié et des méthodes numériques de résolution associées. Elle fournit des résultats numériques censés représenter le phénomène physique. Pour pouvoir valider la simulation, il est absolument indispensable, d'une part, d'estimer la propagation des erreurs d'arrondi due à l'arithmétique approchée des ordinateurs et, d'autre part, d'évaluer l'influence des erreurs de données sur les résultats fournis. Nous présentons, dans cet article, le logiciel CADNA qui permet de valider les logiciels numériques. Nous l'appliquons à un logiciel de simulation d'analyse de la combustion dans les moteurs à allumage commandé et en montrons son efficacité. For analyzing physical phenomena, numerical simulation is used more and more frequently. Starting with a mathematical model describing the phenomenon being analyzed, this simulation consists in creating a scientific computing program expressing this model by implementing the numerical methods required for solving it. Simulation is considered to be valid when the results its provides are in agreement with the results issuing from experimenting with the phenomenon. However, to conclude in the possible validity of the simulation, the numerical results provided by the computer must be previously validated. Yet, these results contain a computing error resulting from the propagation of round-off errors caused by the floating-point arithmetic used by the computer. They also contain an error coming from the uncertainties concerning the data of the problem. Hence it is first indispensable to assess the influence of these errors. This article is made up of two parts. The first part concerns the validation of numerical software results. After making a brief review of the floating

  7. The Role of Attrition and Solids Recovery in a Chemical Looping Combustion Process Effet de l’attrition et de la récupération des particules dans le procédé de combustion en boucle chimique

    Directory of Open Access Journals (Sweden)

    Kramp M.

    2011-05-01

    Full Text Available In the present work, the steady-state behavior of a Chemical Looping Combustion process of interconnected fluidized bed reactors is simulated. The simulations have been carried out in two different scales, 50 kWth and 100 MWth. Attrition model derived from small scale laboratory experiments has been employed for the prediction of the process behavior in terms of attrition and Oxygen Carrier loss. Information on Oxygen Carrier characteristics and reaction kinetics were taken from literature. Realistic circulation mass flows of Oxygen Carrier particles are obtained and Oxygen Carrier losses are quantified. The large scale process looses significantly more Oxygen Carrier than the small scale process based on the same amount of thermal energy produced. Incomplete conversion in the air reactor could be identified as a critical point. Another issue is the fuel gas bypassing the Oxygen Carrier particles through bubbles in the large scale process which leads to lowered fuel conversions. The simulations indicate that a similar performance of a pilot scale and a large scale process is not guaranteed due to the scale-up effect on fluid dynamics. Furthermore, the simulations allow an assessment of the influence of the quality of the solids recovery system on the Oxygen Carrier loss. The distribution of the losses between possible origins is investigated and different changes in the solids recovery system are discussed regarding their potential to decrease the Oxygen Carrier loss. For example, the addition of a second-stage cyclone after the air reactor of the large scale process reduces the Oxygen Carrier loss significantly. Le présent travail propose un modèle de simulation en continu du procédé de combustion en boucle chimique constitué de deux lits fluidisés interconnectés. Les simulations ont été conduites à deux échelles 50 kWth correspondant à une installation pilote et 100 MWth correspondant à une installation industrielle. Un modèle d

  8. Computational Combustion

    Energy Technology Data Exchange (ETDEWEB)

    Westbrook, C K; Mizobuchi, Y; Poinsot, T J; Smith, P J; Warnatz, J

    2004-08-26

    Progress in the field of computational combustion over the past 50 years is reviewed. Particular attention is given to those classes of models that are common to most system modeling efforts, including fluid dynamics, chemical kinetics, liquid sprays, and turbulent flame models. The developments in combustion modeling are placed into the time-dependent context of the accompanying exponential growth in computer capabilities and Moore's Law. Superimposed on this steady growth, the occasional sudden advances in modeling capabilities are identified and their impacts are discussed. Integration of submodels into system models for spark ignition, diesel and homogeneous charge, compression ignition engines, surface and catalytic combustion, pulse combustion, and detonations are described. Finally, the current state of combustion modeling is illustrated by descriptions of a very large jet lifted 3D turbulent hydrogen flame with direct numerical simulation and 3D large eddy simulations of practical gas burner combustion devices.

  9. W.E.B. Du Bois and Filipino/a American Exposure Programs to the Philippines: Race Class Analysis in an Epoch of "Global Apartheid"

    Science.gov (United States)

    Viola, Michael Joseph

    2016-01-01

    The article highlights the ongoing relevance of W.E.B. Du Bois for the global analysis of race and class. Engaging scholarly debates that have ensued within the educational subfields of critical race theory (CRT) and (revolutionary) critical pedagogy, the article explores how a deeper engagement with Du Bois's ideas contributes theoretically and…

  10. The W. E. B. DuBois and Booker T. Washington Debate: Effects upon African American Roles in Engineering and Engineering Technology

    Science.gov (United States)

    Johnson, Keith V.; Watson, Elwood

    2004-01-01

    The messages of Booker T. Washington and W. E. B. DuBois could not have been more diverse. The philosophical rivalry between Washington and DuBois has deep historical roots. To be on the same side fighting for the same purpose, progress, and uplifting of the Black race, these two Black intellectuals harbored radically divergent views on how to…

  11. Groundwater components in the alluvial aquifer of the alpine Rhone River valley, Bois de Finges area, Wallis Canton, Switzerland

    Science.gov (United States)

    Schürch, Marc; Vuataz, François-D.

    2000-09-01

    Source, type, and quantity of various components of groundwater, as well as their spatial and temporal variations were determined by different hydrochemical methods in the alluvial aquifer of the upper Rhone River valley, Bois de Finges, Wallis Canton, Switzerland. The methods used are hydrochemical modeling, stable-isotope analysis, and chemical analysis of surface water and groundwater. Sampling during high- and low-water periods determined the spatial distribution of the water chemistry, whereas monthly sampling over three years provided a basis for understanding seasonal variability. The physico-chemical parameters of the groundwater have spatial and seasonal variations. The groundwater chemical composition of the Rhone alluvial aquifer indicates a mixing of weakly mineralized Rhone River water and SO4-rich water entering from the south side of the valley. Temporal changes in groundwater chemistry and in groundwater levels reflect the seasonal variations of the different contributors to groundwater recharge. The Rhone River recharges the alluvial aquifer only during the summer high-water period. Résumé. Origine, type et quantité de nombreux composants d'eau de l'aquifère alluvial dans la vallée supérieure du Rhône, Bois de Finges, Valais, Suisse, ainsi que leurs variations spatiales et temporelles ont été déterminés par différentes méthodes hydrochimiques. Les méthodes utilisées sont la modélisation hydrochimique, les isotopes stables, ainsi que l'échantillonnage en période de hautes eaux et de basses eaux pour étudier la distribution spatiale de la composition chimique, alors qu'un échantillonnage mensuel pendant trois ans sert à comprendre les processus de la variabilité saisonnière. Les paramètres physico-chimiques des eaux souterraines montrent des variations spatiales et saisonnières. La composition chimique de l'aquifère alluvial du Rhône indique un mélange entre une eau peu minéralisée venant du Rhône et une eau sulfatée s

  12. Tema e variantes do mito: sobre a morte e a ressurreição do boi

    Directory of Open Access Journals (Sweden)

    Maria Laura Viveiros de Castro Cavalcanti

    2006-04-01

    Full Text Available O texto indaga sobre a presença e o sentido de processos míticos relacionados ao folguedo do boi, em uma abordagem de inspiração estruturalista. A primeira parte trata de desconstruir a difundida idéia de que o folguedo do boi corresponderia, ou teria correspondido em suas supostas origens, à encenação de um auto. Argumento que essa crença é um notável efeito da ilusão do arcaísmo característica dos estudos de folclore. Reformulando o "problema do auto", proponho sua compreensão como um conjunto de narrativas de origem que emerge da bibliografia em meados do século XX. Trata-se de demonstrar a natureza mítica dessas narrativas. As conclusões, seguindo sugestões da análise realizada, buscam situar em nova perspectiva a relação entre mito e rito na brincadeira do boi.This text discusses the presence and meaning of mythic processes related to the folguedo do boi (‘the revelry of the ox’, adopting a structuralist-inspired approach. The first part deconstructs the widespread idea that the folguedo do boi corresponds, or orginally corresponded, to the performance of a folk play or auto. I argue that this belief is a clear example of the illusion of archaism typically fostered by folklore studies. Reformulating the ‘problem of the auto,’ I propose comprehending it as a set of origin narratives which emerge in the literature in the middle of the 20th century. The text works to demonstrate the mythic nature of these narratives. The conclusions reached by this analysis enable a fresh perspective on the relation between myth and rite in the folguedo do boi.

  13. Processos criativos, técnicas e linguagens utilizadas na produção artesanal da manifestação cultural do Bumba-meu-boi no Maranhão

    OpenAIRE

    Luisa Sopas Rocha Brandão

    2016-01-01

    O presente estudo, de natureza qualitativa, registra, analisa e compara processos criativos, técnicas e linguagens utilizadas na produção artesanal de quatro agremiações tradicionais que se dedicam à manifestação cultural do Bumba-meu-boi no estado do Maranhão, os grupos \\"Bumba-meu-boi de Morros\\", \\"Bumba-meu-boi da Floresta\\", \\"Bumba-meu-boi da Maioba\\" e \\"Bumba-meu-boi da Liberdade\\". Buscou-se compreender a configuração de suas identidades culturais, sobretudo em relação às característ...

  14. Land use and water quality degradation in the Peixe-Boi River watershed

    Directory of Open Access Journals (Sweden)

    Bruno Wendell de Freitas Pereira

    2016-04-01

    Full Text Available This study mapped the land use and land cover of the catchment area of the Peixe-Boi River watershed, in northeast Pará, in order to identify conflicts of land use in the permanent preservation areas, and to relate them to water quality. We used LISS-3 sensor imagery from the Resourcesat satellite with a spatial resolution of 23.5 m for supervised classification of land use and land cover based on 22 training samples. Water quality was determined based on 28 sampling points in drainage network. The relationship between human disturbance and water quality was analyzed based on observations of land use changes using satellite imagery and in situ collection of water samples. The results show that 46% of the permanent preservation areas have conflicted uses, especially with respect to urban squatters, exposed soil and, most notably, pasture, with over 84 % of the area in conflict. Critical levels of dissolved oxygen reaching 2.14 mg L-1 and pH of 5.12 were observed in some sampling points. These values are below the fresh water standards set by Resolution 357/05 of CONAMA. The poorest water quality may be related to irregular use and occupation of areas within the permanent preservation areas. There is therefore an urgent need to develop a plan for the sustainable use and occupation of catchment area land in the Peixe-Boi River watershed in order to restore the environment and improve water quality.

  15. Cultural Heritage Documentation and Integrated Geomatics Techniques in AN Educational Context: Case Bois-Du (belgium)

    Science.gov (United States)

    Stal, C.; Goossens, R.; Carlier, L.; Debie, J.; Haoudy, K.; Nuttens, T.; De Wulf, A.

    2013-07-01

    The Walloon Region in Belgium played a leading role in the world economy and in the industrial sciences and engineering since the 19th century. Several relicts, such as important industrial buildings or sites, are spread over a large area and are still dominating the current landscape. Some of these remnants are preserved as monuments, representing the industrial, cultural and ecological transition of the region during the last two centuries. Since 2012, UNESCO recognized the importance of four of the best preserved 19th and 20th century coal mining sites and classified them as World Heritage ("Major Mining Sites of Wallonia", Le Grand-Hornu, Bois-du- Luc, Le Bois du Cazier and Blegny Mine). The four recognised mining sites together form a strip of about 170 km long, containing important examples of the so-called 'neo classical architecture' from the early periods of the industrial era in continental Europe. Motivated by this recognition and by the huge touristic and educational potential of the sites, a partnership between the Walloon government and Ghent University was organized. In this first stage, the collaboration focuses on the site of Bois-du-Luc in the municipality of La Louvière, containing a large series of dwellings, several equipments built between 1853 and 1923 by the Société des Charbonnages du Bois-du-Luc, workshops and heaps. Consisting of numerous buildings dating back to the period between 1838 and 1923, this site is one of Europe's oldest collieries. The collaboration between the Walloon government and Ghent University - Department of Geography fits in the hands-on training which students in land surveying and geomatics receive during their Bachelor studies. For the students it is very interesting that their practical exercises are not limited to the university campus, but that they are involved in a real measurement campaign. The project consists of a series of intensive land surveying campaigns, resulting in highly detailed and accurate

  16. "To Break Asunder along the Lesions of Race". The Critical Race Theory of W.E.B. Du Bois

    Science.gov (United States)

    Rashid, Kamau

    2011-01-01

    In addition to its beginnings within legal scholarship, Critical Race Theory (CRT) is intimately aligned with the long tradition of African American social critique, which sought to interrogate the intractable nature of racism and White supremacy. Within this intellectual tradition, the works of W.E.B. Du Bois are of critical significance. Du…

  17. Balancing Hedgehog, a retention and release equilibrium given by Dally, Ihog, Boi and shifted/DmWif.

    Science.gov (United States)

    Bilioni, Aphrodite; Sánchez-Hernández, David; Callejo, Ainhoa; Gradilla, Ana-Citlali; Ibáñez, Carmen; Mollica, Emanuela; Carmen Rodríguez-Navas, M; Simon, Eléanor; Guerrero, Isabel

    2013-04-15

    Hedgehog can signal both at a short and long-range, and acts as a morphogen during development in various systems. We studied the mechanisms of Hh release and spread using the Drosophila wing imaginal disc as a model system for polarized epithelium. We analyzed the cooperative role of the glypican Dally, the extracellular factor Shifted (Shf, also known as DmWif), and the Immunoglobulin-like (Ig-like) and Fibronectin III (FNNIII) domain-containing transmembrane proteins, Interference hedgehog (Ihog) and its related protein Brother of Ihog (Boi), in the stability, release and spread of Hh. We show that Dally and Boi are required to prevent apical dispersion of Hh; they also aid Hh recycling for its release along the basolateral part of the epithelium to form a long-range gradient. Shf/DmWif on the other hand facilitates Hh movement restrained by Ihog, Boi and Dally, establishing equilibrium between membrane attachment and release of Hh. Furthermore, this protein complex is part of thin filopodia-like structures or cytonemes, suggesting that the interaction between Dally, Ihog, Boi and Shf/DmWif is required for cytoneme-mediated Hh distribution during gradient formation.

  18. Learning Cultures in Travel and Tourism: A Critique of Manuela du Bois-Reymond's Trendsetter Learner Thesis

    Science.gov (United States)

    Morrison, Andrew

    2011-01-01

    This article aims to contribute to the discussion surrounding Manuela du Bois-Reymond's important "trendsetter learner" thesis and, in so doing, to join the wider debate about post-compulsory learning cultures. The article outlines the trendsetter learner thesis and then considers recent criticisms that it has attracted. While the author concurs…

  19. Learning Cultures in Travel and Tourism: A Critique of Manuela du Bois-Reymond's Trendsetter Learner Thesis

    Science.gov (United States)

    Morrison, Andrew

    2011-01-01

    This article aims to contribute to the discussion surrounding Manuela du Bois-Reymond's important "trendsetter learner" thesis and, in so doing, to join the wider debate about post-compulsory learning cultures. The article outlines the trendsetter learner thesis and then considers recent criticisms that it has attracted. While the author…

  20. Racialized Spaces in Teacher Discourse: A Critical Discourse Analysis of Place-Based Identities in Roche Bois, Mauritius

    Science.gov (United States)

    Wiehe, Elsa M.

    2013-01-01

    This eleven-month ethnographic study puts critical discourse analysis in dialogue with postmodern conceptualizations of space and place to explore how eight educators talk about space and in the process, produce racialized spaces in Roche Bois, Mauritius. The macro-historical context of racialization of this urban marginalized community informs…

  1. Program Evaluation: Outcomes of Participation in Lac Du Bois, the French Language Village of Concordia Language Villages

    Science.gov (United States)

    Clementi, Donna L.

    2012-01-01

    The purpose of this study was to describe perceptions of stakeholders (leadership of Concordia Language Villages, staff members and villagers of "Lac du Bois", the French Language Village of Concordia Language Villages), related to achievement of the mission statement. The research question was: How do stakeholders in "Lac du…

  2. Reaching Base to Geary: Comparative Sketches in the "Dreams" of W. B. Yeats and W. E. DuBois

    Science.gov (United States)

    Shipley, W. Maurice

    1976-01-01

    Focuses on the attempts of W. B. Yeats and W. E. B. DuBois to channel the creative arts of the Irish and Black people, respectively, into a more substantially fulfilling art, an art that took its original impulse from history, legend and myth. (Author/AM)

  3. The Educational Philosophies of Washington, DuBois, and Houston: Laying the Foundations for Afrocentrism and Multiculturalism.

    Science.gov (United States)

    Dunn, Frederick

    1993-01-01

    The following three African-American philosophical orientations to education have achieved prominence over the years: (1) the accommodationist philosophy of Booker T. Washington; (2) the radical, liberationist approach of W. E. B. DuBois; and (3) the integrationist/desegregationist, reformist philosophy of Charles H. Houston. Each philosophical…

  4. Learning Cultures in Travel and Tourism: A Critique of Manuela du Bois-Reymond's Trendsetter Learner Thesis

    Science.gov (United States)

    Morrison, Andrew

    2011-01-01

    This article aims to contribute to the discussion surrounding Manuela du Bois-Reymond's important "trendsetter learner" thesis and, in so doing, to join the wider debate about post-compulsory learning cultures. The article outlines the trendsetter learner thesis and then considers recent criticisms that it has attracted. While the author…

  5. Combustion physics

    Science.gov (United States)

    Jones, A. R.

    1985-11-01

    Over 90% of our energy comes from combustion. By the year 2000 the figure will still be 80%, even allowing for nuclear and alternative energy sources. There are many familiar examples of combustion use, both domestic and industrial. These range from the Bunsen burner to large flares, from small combustion chambers, such as those in car engines, to industrial furnaces for steel manufacture or the generation of megawatts of electricity. There are also fires and explosions. The bountiful energy release from combustion, however, brings its problems, prominent among which are diminishing fuel resources and pollution. Combustion science is directed towards finding ways of improving efficiency and reducing pollution. One may ask, since combustion is a chemical reaction, why physics is involved: the answer is in three parts. First, chemicals cannot react unless they come together. In most flames the fuel and air are initially separate. The chemical reaction in the gas phase is very fast compared with the rate of mixing. Thus, once the fuel and air are mixed the reaction can be considered to occur instantaneously and fluid mechanics limits the rate of burning. Secondly, thermodynamics and heat transfer determine the thermal properties of the combustion products. Heat transfer also plays a role by preheating the reactants and is essential to extracting useful work. Fluid mechanics is relevant if work is to be performed directly, as in a turbine. Finally, physical methods, including electric probes, acoustics, optics, spectroscopy and pyrometry, are used to examine flames. The article is concerned mainly with how physics is used to improve the efficiency of combustion.

  6. Applied combustion

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1993-12-31

    From the title, the reader is led to expect a broad practical treatise on combustion and combustion devices. Remarkably, for a book of modest dimension, the author is able to deliver. The text is organized into 12 Chapters, broadly treating three major areas: combustion fundamentals -- introduction (Ch. 1), thermodynamics (Ch. 2), fluid mechanics (Ch. 7), and kinetics (Ch. 8); fuels -- coal, municipal solid waste, and other solid fuels (Ch. 4), liquid (Ch. 5) and gaseous (Ch. 6) fuels; and combustion devices -- fuel cells (Ch. 3), boilers (Ch. 4), Otto (Ch. 10), diesel (Ch. 11), and Wankel (Ch. 10) engines and gas turbines (Ch. 12). Although each topic could warrant a complete text on its own, the author addresses each of these major themes with reasonable thoroughness. Also, the book is well documented with a bibliography, references, a good index, and many helpful tables and appendices. In short, Applied Combustion does admirably fulfill the author`s goal for a wide engineering science introduction to the general subject of combustion.

  7. Ontogenese de certains aspects de l'orientation du grillon des bois Nemobius sylvestris (Bosc), dans son milieu naturel.

    Science.gov (United States)

    Beugnon, G; Mieulet, F; Campan, R

    1983-03-01

    The ontogeny of the orientation of the wood-cricket, Nemobius sylvestris, was studied experimentally in a variety of biotopes. In each experimental situation, the straightness of the routes taken by crickets improves with age. These results demonstrate that, depending on the variety of the constraints within each living area, various local individual solutions to the problem of orientation develop during ontogeny.

  8. Biofuels combustion.

    Science.gov (United States)

    Westbrook, Charles K

    2013-01-01

    This review describes major features of current research in renewable fuels derived from plants and from fatty acids. Recent and ongoing fundamental studies of biofuel molecular structure, oxidation reactions, and biofuel chemical properties are reviewed, in addition to combustion applications of biofuels in the major types of engines in which biofuels are used. Biofuels and their combustion are compared with combustion features of conventional petroleum-based fuels. Two main classes of biofuels are described, those consisting of small, primarily alcohol, fuels (particularly ethanol, n-butanol, and iso-pentanol) that are used primarily to replace or supplement gasoline and those derived from fatty acids and used primarily to replace or supplement conventional diesel fuels. Research efforts on so-called second- and third-generation biofuels are discussed briefly.

  9. The hereditary angioedema burden of illness study in Europe (HAE-BOIS- Europe)

    DEFF Research Database (Denmark)

    Bygum, Anette; Aygören-Pürsün, Emel; Caballero, Teresa

    2012-01-01

    ABSTRACT: BACKGROUND: Hereditary angioedema (HAE) is a rare but serious disease marked by swelling attacks in the extremities, face, trunk, airway, or abdominal areas that can be spontaneous or the result of trauma and other triggers. It can be life-threatening due to the risk of asphyxiation....... While there have been major advancements in our understanding of the immunogenetics of HAE, there are significant gaps in the literature regarding understanding of the humanistic and economic impact of the disease, particularly in Europe. The purpose of the HAE Burden of Illness Study-Europe (HAE......-BOIS-Europe), the development and methodology of which is described here, is to better understand the management and impact of HAE from the patient perspective in Europe. METHODS: This is a cross-sectional study being conducted in Denmark, Germany and Spain. The study is open to patients ages 12 and older with a diagnosis...

  10. 10cct02_sw_v2_50m - 50 meter interpolated bathymetric grid of Petit Bois Pass, Mississippi Barrier Islands, March 2010

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — In March of 2010, the U.S. Geological Survey (USGS) conducted geophysical surveys offshore of Petit Bois Island, Mississippi and Dauphin Island, Alabama. These...

  11. 10cct02_ss_v1_1m - Side scan sonar mosaic of Petit Bois Pass, Alabama, Mississippi Barrier Islands, March 2010

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — In March of 2010, the U.S. Geological Survey (USGS) conducted geophysical surveys offshore of Petit Bois Island, Mississippi, and Dauphin Island, Alabama. These...

  12. Archive of Side Scan Sonar and Swath Bathymetry Data Collected During USGS Cruise 13CCT04 Offshore of Petit Bois Island, Gulf Islands National Seashore, Mississippi, August 2014

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — In August of 2013, the U.S. Geological Survey (USGS) conducted geophysical surveys offshore of Petit Bois Island, Mississippi. These efforts are a continued part of...

  13. 10cct02_ss_v1_1m - Side scan sonar mosaic of Petit Bois Pass, Alabama, Mississippi Barrier Islands, March 2010

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — In March of 2010, the U.S. Geological Survey (USGS) conducted geophysical surveys offshore of Petit Bois Island, Mississippi, and Dauphin Island, Alabama. These...

  14. Archive of Side Scan Sonar and Swath Bathymetry Data Collected During USGS Cruise 13CCT04 Offshore of Petit Bois Island, Gulf Islands National Seashore, Mississippi, August 2014

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — In August of 2013, the U.S. Geological Survey (USGS) conducted geophysical surveys offshore of Petit Bois Island, Mississippi. These efforts are a continued part of...

  15. 10cct02_sw_v2_50m - 50 meter interpolated bathymetric grid of Petit Bois Pass, Mississippi Barrier Islands, March 2010

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — In March of 2010, the U.S. Geological Survey (USGS) conducted geophysical surveys offshore of Petit Bois Island, Mississippi and Dauphin Island, Alabama. These...

  16. Energy from wood - part 2: manual wood furnaces and pellet furnaces; Holzenergie, Teil 2: Handbeschickte Holzfeuerungen und Pelletheizungen - Energie du bois, Partie 2: installations de chauffage au bois a alimentation manuelle et installations de chauffage a granules de bois

    Energy Technology Data Exchange (ETDEWEB)

    Nussbaumer, T. [Verenum, Zuerich (Switzerland)

    2000-07-01

    The paper gives an overview on the technologies and applications of wood furnaces for residential heating and a methodology of the furnace types. With respect to the heat utilization, two systems are distinguished: Stoves for direct heat supply to the room, and boilers with heat transfer to water for central heating and domestic hot water. With respect to the combustion technology, furnaces with updraft and down-draft combustion are distinguished. The conventional updraft system with natural draft is most common for wood stoves and enables a simple operation. However, the combustion quality and efficiency can be increased with application of forced draft and down-draft combustion. This is most common in modern wood boilers and enables good mixing of combustible gases with air and allows an operation at low excess air. The principle of updraft and down-draft combustion are described and typical applications are discussed. Furthermore, modern control systems including lambda-control for the optimization of efficiency and emissions are described. As an alternative to log wood, wood pellets can be utilized for residential heating in either pellet stoves or pellet boilers. Thanks to the low water content and the well specified, standardized properties of wood pellets, pellet furnaces achieve high efficiencies and low emissions. Depending on the specific needs, different types of fuel storage and handling systems are available that allow a full automatic operation. In the case of pellet stoves, the fuel is usually stored in bags and the storage tank in the stove allows an independent operation for at least 24 hours. For pellet boilers, a fuel silo with a capacity of one season and with automatic feeding of the boiler is applied. (author)

  17. Mulheres e cultura popular: gênero e classe no bumba-meu-boi do Maranhão

    Directory of Open Access Journals (Sweden)

    Lady Selma Ferreira Albernaz

    2011-07-01

    Full Text Available O artigo trata o tema da participação das mulheres no bumba-meu-boi da região nordeste, no Maranhão (Brasil, uma festa da cultura popular que integra gênero e classe,bem como alguns aspectos de raça e geração. O bumba-meu-boi, que antes era percebido negativamente como uma manifestação da comunidade de homens negros e pobres que eram os encarregados da festa, ganhou agora visibilidade, reconhecimento e recursos públicos, o que proporcionou um aumento do número de mulheres que alcançaram poder na festa, e inclusive do número de pessoasbrancas de classe média participantes, fato que alterou a hierararquia da população negra e pobre. A exigência de contar com um prototipo de mulher coincide com o branqueamento das mulheres em quase todos os grupos, daí que agora aumentem as desigualdades entre as mulheres negras e brancas, entre classes e entre os grupos de bumba-meu-boi. A investigação analisa tais desigualdades derivadas.El artículo aborda el tema de la participación de las mujeres en el bumba-meu-boi de la región noreste de Maranhão (Brasil, una fiesta de la cultura popular que abarca género y clase, así como algunos aspectos de raza y generación. El bumba-meu-boi, que antes era percibido negativamente como una manifestación de la comunidad a cargo de hombres negros y pobres, ahora ha ganado visibilidad, reconocimiento y recursos públicos, lo que propició un aumento del número de mujeres que alcanzan el poder en la fiesta, e incluso del número de personas blancas de clase media participantes, hecho que ha alterado la jerarquía de la población negra y pobre. La exigencia de contar con un prototipo de mujer coincide con el blanqueamiento de las mujeres en casi todos los grupos, de ahí que ahora aumenten las desigualdades entre las mujeres negras y blancas, entre clases y entre los grupos de bumba-meu-boi. La investigación analiza tales desigualdades derivadas.

  18. Turbulent combustion

    Energy Technology Data Exchange (ETDEWEB)

    Talbot, L.; Cheng, R.K. [Lawrence Berkeley Laboratory, CA (United States)

    1993-12-01

    Turbulent combustion is the dominant process in heat and power generating systems. Its most significant aspect is to enhance the burning rate and volumetric power density. Turbulent mixing, however, also influences the chemical rates and has a direct effect on the formation of pollutants, flame ignition and extinction. Therefore, research and development of modern combustion systems for power generation, waste incineration and material synthesis must rely on a fundamental understanding of the physical effect of turbulence on combustion to develop theoretical models that can be used as design tools. The overall objective of this program is to investigate, primarily experimentally, the interaction and coupling between turbulence and combustion. These processes are complex and are characterized by scalar and velocity fluctuations with time and length scales spanning several orders of magnitude. They are also influenced by the so-called {open_quotes}field{close_quotes} effects associated with the characteristics of the flow and burner geometries. The authors` approach is to gain a fundamental understanding by investigating idealized laboratory flames. Laboratory flames are amenable to detailed interrogation by laser diagnostics and their flow geometries are chosen to simplify numerical modeling and simulations and to facilitate comparison between experiments and theory.

  19. Utilisation de produits organiques oxygénés comme carburants et combustibles dans les moteurs. Première partie : Aspects techniques de l'utilisation sur moteur Using Oxygenated Organics Products As Fuels in Engines. Part One: Technical Aspects of Use in Engines

    Directory of Open Access Journals (Sweden)

    Guibet J. C.

    2006-11-01

    Full Text Available L'étude consiste à examiner les principales incidences techniques de l'emploi de produits organiques oxygénés (alcools, ethers. . . comme carburants et combustibles dans les moteurs à allumage commandé et diesel. On a tenté d'établir une synthèse des études très nombreuses réalisées sur ce sujet surtout depuis les cinq dernières années. On a considéré une large variété de produits (méthanol, éthanol, autres alcools, éthers organiques, systèmes acétono-butyliques. . . utilisés tels quels ou en mélange dans les produits pétroliers classiques. Des techniques particulières comme la carburation catalytique, la fumigation ou la double injection ont également été examinées. This article examines the main technical impacts of using oxygenated organic products (alcohols, ethers, etc. as fuels in spark-ignition and diesel engines. An attempt is made to provide a synthesis of the enormous volume of research that has been done on this subject, especially in the last five years. A wide variety of products is considered (methanol, ethanol, other alcohols, organic ethers, butyl-acetone systems, etc. , used either unblended or blended with conventional petroleum produtcs. Special techniques such as catalytic carburation, fumigation or dual injection are also examined.

  20. Combining interventions: improved chimney stoves, kitchen sinks and solar disinfection of drinking water and kitchen clothes to improve home hygiene in rural Peru L’association d’interventions - améliorer les cuisinières à bois, mettre en place des éviers, désinfecter l’eau domestique et le linge de cuisine par le solaire – permet d’améliorer l’hygiène dans les foyers ruraux du Pérou Intervenciones combinadas: mejorar las cocinas a leña, instalar fregaderos y desinfectar el agua para beber y los paños de cocina con energía solar para mejorar la higiene en hogares rurales en Perú

    Directory of Open Access Journals (Sweden)

    Ana I. Gil

    2012-05-01

    Full Text Available Home based interventions are advocated in rural areas against a variety of diseases. The combination of different interventions might have synergistic effects in terms of health improvement and cost effectiveness. However, it is crucial to ensure cultural acceptance. The aim of the study was to develop an effective and culturally accepted home-based intervention package to reduce diarrhoea and lower respiratory illnesses in children. In two rural Peruvian communities we evaluated the performance and acceptance of cooking devices, household water treatments (HWT and home- hygiene interventions, with qualitative and quantitative methods. New ventilated stove designs reduced wood consumption by 16%. The majority of participants selected solar water disinfection as HWT in a blind tasting. In-depth interviews on hygiene improvement further revealed a high demand for kitchen sinks. After one year of installation the improved chimney stoves and kitchen sinks were all in use.  The intervention package was successfully adapted to local customs, kitchen-, home- and hygiene management. High user satisfaction was primarily driven by convenience gains due to the technical improvements and only secondarily by perceived health benefits.Les interventions à domicile sont recommandées dans les zones rurales pour éviter diverses maladies. L’association de différentes interventions entraîne une synergie en termes d’amélioration de la santé et de rapport coût-efficacité. Il est cependant crucial d’obtenir l’adhésion de la population. Le but de l’étude était d'élaborer un programme d’interventions à domicile, efficaces et acceptées par la population, visant à réduire la diarrhée et les affections des voies respiratoires basses chez l’enfant. Nous avons évalué, dans deux communautés rurales du Pérou, l’efficacité et l’acceptation d’appareils de cuisson, des traitements de l’eau domestique (HWT et d’interventions d

  1. Analyse cognitive d’une politique publique : justice environnementale et « marchés ruraux » de bois-énergie

    Directory of Open Access Journals (Sweden)

    Frank D. Muttenzer

    2012-11-01

    faible pouvoir d’achat en charbon de bois pour la cuisson et, d’autre part, de réduire la pauvreté des ménages ruraux par des activités génératrices de revenus tels que l’exploitation et le commerce du charbon de bois dans le cadre d’une gestion durable des forêts. L’article est fondé sur les enquêtes de terrain de l’auteur et présente une analyse cognitive (c’est-à-dire social-constructiviste de ce programme pilote qui débouche sur quatre principales conclusions. (i L’inefficacité écologique des marchés ruraux n’est pas perçue comme un problème public tant que l’approvisionnement des villes en charbon au moindre coût est socialement tenu pour résolu efficacement et avec justesse. (ii Le relativisme culturel de cette conception de la justice environnementale est « universalisable » en ce que l’impératif surplombant d’approvisionner les villes africaines en énergie domestique au moindre coût est également invoqué par les organismes de développement. (iii Le programme analysé est un cas typique d’inversion normative où les solutions disponibles ont déterminé les manières d’identifier le problème. (iv Le concept de marché rural de bois-énergie est un « cadre d’interprétation du monde » qui justifie les mesures à prendre en démontrant le lien avec le diagnostic empirique même si les populations et administrations destinataires en font d’autres interprétations.

  2. Advanced Combustion

    Energy Technology Data Exchange (ETDEWEB)

    Holcomb, Gordon R. [NETL

    2013-03-11

    The activity reported in this presentation is to provide the mechanical and physical property information needed to allow rational design, development and/or choice of alloys, manufacturing approaches, and environmental exposure and component life models to enable oxy-fuel combustion boilers to operate at Ultra-Supercritical (up to 650{degrees}C & between 22-30 MPa) and/or Advanced Ultra-Supercritical conditions (760{degrees}C & 35 MPa).

  3. Contribution to the study of influence of hydrodynamic conditions on the combustion of a preliminary mixture in a enclosed medium; Contribution a l`etude de l`influence des conditions hydrodynamiques sur la combustion d`un melange prealable dans un milieu confine

    Energy Technology Data Exchange (ETDEWEB)

    Henry, J.D.

    1996-02-01

    This thesis is a study on the internal combustion of a pistons engine. the first chapter is devoted to the description of the experimental device and measurement means. The combustion chamber is described with its adaptation to new experimental conditions. The second chapter concerns the diagnosis means to interpret the hydrodynamic conditions by the cross checking of displays with the measures of flow speed by laser velocimetry. The third chapter gives the result of analysis on the process of the birth of a turbulent flow in a whirl movement. The study of the electric spark and the initial phase of the combustion, in media with or without movement, is in the last chapter. (N.C.)

  4. Contribution to the study of an lpg jet in the combustion chamber of a spark-ignition engine; Contribution a l'etude d'un jet de gpl dans la chambre de combustion d'un moteur a allumage commande, pour differentes strategies d'injection

    Energy Technology Data Exchange (ETDEWEB)

    Duong Viet, D.

    2002-07-01

    It appears tempting to combine the less polluting combustion of LPG with the energy performances of a direct injection spark-ignition engine. To this aim the study of high pressure injection of a liquid LPG jet, directly inside the combustion chamber of an engine was performed in two ways: Experimental studies: one with fast cinematography and another with the method of Doppler phases in an one-cylinder 'transparent' engine for various conditions of injection and without combustion. They respectively deliver empirical laws for the jet development and some informations about size and speed of the droplets of LPG. A modeling of the jet could then be made on the basis of a turbulent and deviated jet the parameters of which could be adjusted using results of the preceding experimental study. (author)

  5. Energy wood. Part 2b: Wood pellets and pellet space-heating systems; Holzenergie Teil 2b: Holzpellets und Pelletheizungen / Energie du bois Partie 2b: Granules de bois et installations de chauffage a granules de bois

    Energy Technology Data Exchange (ETDEWEB)

    Nussbaumer, T. [Verenum, Zuerich (Switzerland)

    2002-07-01

    The paper gives an overview on pellet utilization including all relevant process steps: Potential and properties of saw dust as raw material, pellet production with drying and pelletizing, standardization of wood pellets, storage and handling of pellets, combustion of wood pellets in stoves and boilers and applications for residential heating. In comparison to other wood fuels, wood pellets show several advantages: Low water content and high heating value, high energy density, and homogeneous properties thus enabling stationary combustion conditions. However, quality control is needed to ensure constant properties of the pellets and to avoid the utilization of contaminated raw materials for the pellet production. Typical data of efficiencies and emissions of pellet stoves and boilers are given and a life cycle analysis (LCA) of wood pellets in comparison to log wood and wood chips is described. The LCA shows that wood pellets are advantageous thanks to relatively low emissions. Hence, the utilization of wood pellet is proposed as a complementary technology to the combustion of wood chips and log wood. Finally, typical fuel cost of wood pellets in Switzerland are given and compared with light fuel oil. (author)

  6. 'Bois noir' phytoplasma induces significant reprogramming of the leaf transcriptome in the field grown grapevine

    Directory of Open Access Journals (Sweden)

    Dermastia Marina

    2009-10-01

    Full Text Available Abstract Background Phytoplasmas are bacteria without cell walls from the class Mollicutes. They are obligate intracellular plant pathogens which cause diseases in hundreds of economically important plants including the grapevine (Vitis vinifera. Knowledge of their biology and the mechanisms of their interactions with hosts is largely unknown because they are uncultivable and experimentally inaccessible in their hosts. We detail here the global transcriptional profiling in grapevine responses to phytoplasmas. The gene expression patterns were followed in leaf midribs of grapevine cv. 'Chardonnay' naturally infected with a phytoplasma from the stolbur group 16SrXII-A, which is associated with the grapevine yellows disease 'Bois noir'. Results We established an on field experimental system in a productive vineyard that allowed application of molecular tools in a plant natural environment. Global transcription profiles of infected samples were compared with the healthy ones using microarray datasets and metabolic pathway analysis software (MapMan. The two-year-long experiment revealed that plant genes involved in primary and secondary metabolic pathways were changed in response to infection and that these changes might support phytoplasma nutrition. A hypothesis that phytoplasmas interact with the plant carbohydrate metabolism was proven and some possibilities how the products of this pathway might be utilized by phytoplasmas are discussed. In addition, several photosynthetic genes were largely down-regulated in infected plants, whereas defense genes from the metabolic pathway leading to formation of flavonoids and some PR proteins were significantly induced. Few other genes involved in defense-signaling were differentially expressed in healthy and infected plants. A set of 17 selected genes from several differentially expressed pathways was additionally analyzed with quantitative real-time PCR and confirmed to be suitable for a reliable

  7. Por uma estrada do M' Boi Mirim sustentável

    Directory of Open Access Journals (Sweden)

    Carlos Henrique Santos de Oliveira

    2015-10-01

    Full Text Available Este artigo trata de avaliar importante via de transporte situada na zona sul da cidade de São Paulo, analisando quais fatores dificultam a circulação de bens e pessoas no espaço urbano, bem como a dificuldade de promover a mobilidade urbana de acordo com os princípios de sustentabilidade, por meio de uma pesquisa qualitativa, exploratória e bibliográfica, com base em um estudo de caso realizado na Estrada do M’ Boi Mirim. Os instrumentos de coleta de dados utilizados foram a observação pessoal, bem como pesquisas em artigos científicos, dissertações e teses relacionadas ao tema. Apesar de essa questão estar sendo amplamente discutida por diversos setores da sociedade, notam-se poucas soluções práticas, haja vista, o crescente uso de transportes individuais motorizados, muitos acidentes nas vias e por muitas vezes, pouca infraestrutura, bem como a falta integração das regiões por meio das vias existentes, principalmente em áreas distantes do centro das cidades.

  8. Utilisation de produits organiques oxygénés comme carburants et combustibles dans les moteurs. Deuxième partie : Les différentes filières d'obtention des carburols. Analyse technico-économique Using Oxygenated Organic Products As Fuels in Engines. Part Two: Different Systems for Producing Alcohol Fuels. Technico-Economic Analysis

    Directory of Open Access Journals (Sweden)

    Chauvel A.

    2006-11-01

    Full Text Available Parmi les produits à même d'être substitués aux hydrocarbures pour la constitution des carburants, les composés organiques oxygénés occupent une place prépondérante à cause de leurs caractéristiques favorables à la combustion dans les moteurs, qu'ils soient employés purs ou mélangés (seuls ou à plusieurs aux hydrocarbures, constituants des carburants classiques. Dans cet article, ces composés oxygénés sont désignés sous le nom de carburols. Alors que l'objet de la première partie de l'étude a été d'examiner les conséquences techniques de l'emploi de ces produits sur les circuits de distribution et le fonctionnement des véhicules, il s'agit dans la présente partie d'analyser les caractéristiques technico-économiques de leur fabrication. En particulier, on y aborde successivement les points suivants : - disponibilités en matières premières : ressources fossiles et végétales ; - analyse technique des divers modes d'obtention - analyse économique ; - programmes nationaux. Among products that can be substituted for hydrocarbons for producing fuels, oxygenated organic compounds occupy a preponderant position because of their favorable characteristics for combustion in engines whether they are used in a pure form or in mixtures (alone or severally with hydrocarbons which are used to make up conventional fuels. In this article these oxygenated compounds are given the name carburols (alcohol fuels. Whereas the aim of Part 1 was to examine the technical consequences of using such products in distribution circuits and for vehicle operating, Part 2 is an analysis of the technico-economic aspects of manufacturing them. In particular, the following points are taken up successively: (a availabilities of raw materials. fossil and vegetebal resources; (b technical analysis of various production methods; (c economic analysis; (d national programs. Depending on the amounts involved, a distinction is made among alternative

  9. Biomass equipments. The wood-fueled heating plants; Materiels pour la biomasse. Les chaudieres bois

    Energy Technology Data Exchange (ETDEWEB)

    Chieze, B. [SA Compte R, 63 - Arlanc (France)

    1997-12-31

    This paper analyzes the consequences of the classification of biomass fuels in the French 2910 by-law on the classification of biomass-fueled combustion installations. Biomass fuels used in such installations must be only wood wastes without any treatment or coating. The design of biomass combustion systems must follow several specifications relative to the fueling system, the combustion chamber, the heat exchanger and the treatment of exhaust gases. Other technical solutions must be studied for other type of wood wastes in order to respect the environmental pollution laws. (J.S.)

  10. Évaluation de la restauration des rivières chenalisées pour le flottage du bois : étude du cas de la rivière Kutinjoki, Finlande du Nord

    Directory of Open Access Journals (Sweden)

    HUUSKO A.

    1995-04-01

    Full Text Available Au cours de la dernière décennie, plusieurs projets de restauration de rivières à grande échelle ont été initiés en Finlande, afin de réhabiliter la structure originale de l'habitat dans des rivières chenalisées pour le flottage du bois dans les années 1950-1960. L'objectif principal de la restauration est d'augmenter la diversité des berges et d'améliorer l'habitat des poissons en réarrangeant le substrat sur le fond de la rivière. Les digues de blocs utilisées sur la rivière Kutinjoki ont augmenté la diversité et la variabilité des profondeurs, des vitesses et des classes de substrats dominants disponibles, et ont augmenté la complexité spatiale des rapides. Sur les sites étudiés, les successions radiers-mouilles étaient clairement visibles après restauration et contrastaient avec les écoulements plus ou moins homogènes d'avant restauration. L'opération de restauration semble favoriser les truites de un an (1+ et plus. Si l'on souhaite planifier et évaluer ce type d'amélioration de l'habitat piscicole, il est fortement conseillé d'utiliser une modélisation des conditions physiques et hydrologiques à une échelle pertinente pour les poissons et d'y inclure une analyse des préférences d'habitat des poissons.

  11. Combustion Research Laboratory

    Data.gov (United States)

    Federal Laboratory Consortium — The Combustion Research Laboratory facilitates the development of new combustion systems or improves the operation of existing systems to meet the Army's mission for...

  12. High Combustion Research Facility

    Data.gov (United States)

    Federal Laboratory Consortium — At NETL's High-Pressure Combustion Research Facility in Morgantown, WV, researchers can investigate new high-pressure, high-temperature hydrogen turbine combustion...

  13. Documentation et conservation-restauration d’un autel bouddhique en bois laqué et doré, provenant du Japon

    Directory of Open Access Journals (Sweden)

    Violaine Brard

    2010-11-01

    Full Text Available Un petit autel bouddhique en bois laqué et doré était conservé dans un carton d’emballage au sein du musée Georges-Labit à Toulouse. Tout l’enjeu de ce travail fut de collecter les informations relatives au pays d’origine de la pièce, à son époque de création ainsi que son rôle dans son pays d’origine. La recherche visait ensuite à comprendre la manière dont cet objet est passé d’une culture japonaise à une collection française, élaborée par un voyageur et collectionneur de la fin du XIXe siècle, Georges Labit. L’autel est le fruit d’un support et d’une polychromie japonaise initiale et de surpeints européens appliqués au cours du XIXe siècle. Ces surpeints témoignent de son passage laborieux d’un pays à un autre. Les nouveaux acquéreurs de l’objet ont très certainement voulu, par leur intervention, réparer les altérations, causées par le voyage de la pièce, et l’adapter à une esthétique occidentale. Dans le cadre de mon étude, je me suis contentée d’intervenir sur la stricte conservation curative de la pièce. Elle vise, de manière générale, à retrouver une lisibilité cohérente et à redonner à la structure une unité.A small gilded and lacquered wooden Buddhist altar has been  kept for years in a cardboard box in the storage rooms of the Georges Labit museum in Toulouse. The challenge of this project  was to collect information on the origins of the altar, its time of creation and its specific function  in the  country of origin. The research focused on raising understanding  how this object has been transferred from  the Japanese culture  into a French collection that has been developed by Georges Labit a traveller and collector of the late nineteenth century. Examinations  showed that the altar with its original Japanese wooden support and polychromy showes over paints that have been applied in Europe  during the nineteenth century. These over paints demonstrate its

  14. Absorption de l’eau et son effet sur la durabilité des bétons de sable allégés par ajout de copeaux de bois Water absorption and its effect on the durability of sand concrete lightened by the addition of wood shavings

    Directory of Open Access Journals (Sweden)

    Quéneudec M.

    2012-09-01

    Full Text Available L’objectif principal de ce travail est d’étudier l’effet de l’eau sur les bétons de sable léger à base de matériaux et de déchets locaux. Les matériaux utilisés sont un sable de dune et un sable d’oued et les déchets sont des fillers calcaires (déchets de concassage et des copeaux de bois (déchets de la menuiserie [1, 2]. En général, on a remarqué que dans le cas de copeaux de bois non traités, plus le taux de bois est élevé, plus l’absorption d’eau est importante, que ce soit par immersion ou par capillarité. En soumettant le matériau à une série de cycles “mouillage – séchage” accélérés, une légère diminution dans la résistance à la compression a été enregistrée. Par ailleurs, le traitement des copeaux de bois avant leur utilisation [3] a considérablement amélioré la résistance vis à vis de ces cycles “mouillage-séchage”. De même, l’absorption d’eau, par immersion et par capillarité, a été considérablement diminuée. Il convient de noter enfin, que ces résultats viennent confirmer la possibilité d’utilisation de ce matériau montrée par les résultats encourageants trouvés dans les travaux précédents, telles que les propriétés mécaniques et thermiques. The main objective of this work is to study the effect of water on lightweight sand concrete based on local materials and wastes The materials used are dune sand and river sand and the wastes are limestone fillers (aggregates crushing waste and wood shavings (wood work activities wastes [1, 2]. It was generally noted that in the case of untreated wood shavings, the higher the wood content, more important the water absorption, whether by immersion or by capillarity. By subjecting the material to a series of accelerated "wet – dry cycling", a slight decrease in compressive strength was recorded. Moreover, the treatment of wood shavings before their use [3] had greatly improved the resistance with respect to these

  15. Equipment for biomass. Wood burners; Materiels pour la biomasse, les chaudieres bois

    Energy Technology Data Exchange (ETDEWEB)

    Chieze, B. [SA Compte R., 63 - Arlanc (France)

    1997-12-31

    A review of the French classification of biomass wastes (and more especially wood and wood wastes) concerning classified burning equipment, is presented: special authorization is thus needed for burning residues from wood second transformation processes. Limits for combustion product emission levels are detailed and their impact on wood burning and process equipment is examined: feeder, combustion chamber, exchanger, fume treatment device, residue disposal. Means for reducing pollutant emissions are reviewed

  16. Combustion chemistry

    Energy Technology Data Exchange (ETDEWEB)

    Brown, N.J. [Lawrence Berkeley Laboratory, CA (United States)

    1993-12-01

    This research is concerned with the development and use of sensitivity analysis tools to probe the response of dependent variables to model input variables. Sensitivity analysis is important at all levels of combustion modeling. This group`s research continues to be focused on elucidating the interrelationship between features in the underlying potential energy surface (obtained from ab initio quantum chemistry calculations) and their responses in the quantum dynamics, e.g., reactive transition probabilities, cross sections, and thermal rate coefficients. The goals of this research are: (i) to provide feedback information to quantum chemists in their potential surface refinement efforts, and (ii) to gain a better understanding of how various regions in the potential influence the dynamics. These investigations are carried out with the methodology of quantum functional sensitivity analysis (QFSA).

  17. Le bois sans nom : repère de lecture

    OpenAIRE

    Jones-Davies, Margaret

    2014-01-01

    Cet article traite des questions de la nomination et du sens dans Alice’s Adventures in Wonderland et Through the Looking Glass de Lewis Carrol. This article concerns questions of nomination and meaning in Lewis Carrol’s Alice’s Adventures in Wonderland and Through the Looking Glass.

  18. INDICATED SPECIES TO RESTORATION OF RIPARIAN FORESTS IN SUBWATERSHED OF PEIXE-BOI RIVER, PARÁ STATE

    Directory of Open Access Journals (Sweden)

    Igor do Vale

    2014-09-01

    Full Text Available http://dx.doi.org/10.5902/1980509815736This study aims to indicate native species to be used in the restoration of degraded riparian forests in the subwatershed of Peixe-Boi river. All trees and shrubs with diameter at breast height (DBH > 5 cm were inventoried in ten areas of secondary forest and six areas of igapó forest. The results were analyzed by Principal Component Analysis and the silviculture of the species was assessed by literature review. In Igapó areas 66 species were found; the areas had low richness and low diversity index of Shannon, when compared with data from the secondary forests. The floristic composition was heterogeneous, and the floristic similarity is higher between areas that are closer geographically. In the secondary forests were found 175 species; the areas showed high abundance of individuals, high species richness, diversity and evenness. Secondary forests were separated according to geographic proximity and age, which is directly linked to the successional stage. The PCA analysis established the ecological importance of 29 tree species; however only ten species had enough silvicultural information. Due to a greater ecological importance and viable silvicultural techniques available in the literature, Carapa guianensis, Pachira aquatica, Spondias mombin, Tapirira guianensis and Virola guianensis are the most suitable species to restore the degraded areas, in association with Inga edulis, Jacaranda copaia, Pseudopiptadenia psilostachya, Simarouba amara and Vismia guianensis of the secondary forests, that can be planted in the borders and in the nearby areas of igapó forests.

  19. The hereditary angioedema burden of illness study in Europe (HAE-BOIS-Europe: background and methodology

    Directory of Open Access Journals (Sweden)

    Bygum Anette

    2012-04-01

    Full Text Available Abstract Background Hereditary angioedema (HAE is a rare but serious disease marked by swelling attacks in the extremities, face, trunk, airway, or abdominal areas that can be spontaneous or the result of trauma and other triggers. It can be life-threatening due to the risk of asphyxiation. While there have been major advancements in our understanding of the immunogenetics of HAE, there are significant gaps in the literature regarding understanding of the humanistic and economic impact of the disease, particularly in Europe. The purpose of the HAE Burden of Illness Study-Europe (HAE-BOIS-Europe, the development and methodology of which is described here, is to better understand the management and impact of HAE from the patient perspective in Europe. Methods/Design This is a cross-sectional study in which retrospective data were also collected being conducted in Denmark, Germany and Spain. The study is open to patients ages 12 and older with a diagnosis of HAE-I or HAE-II. Data collection includes: (i a survey on individuals’ health care resource use, direct and indirect medical costs, impact on work and school, treatment satisfaction, and emotional functioning (via the Hospital Anxiety and Depression Scale; and (ii one-on-one interviews to collect detailed descriptive data and patient testimonials on the impact of HAE on patients’ health-related quality of life. Discussion The present manuscript describes the development and plans for implementing a multi-country European study with the aim of characterizing the humanistic and economic burden of HAE from the patient perspective. This study will help raise awareness of HAE as a rare but debilitating condition with wide-ranging impacts.

  20. Remote sensing monitoring of bean crop cultivated in the Boi Branco watershed (Brazil)

    Science.gov (United States)

    Soares da Silva, Natália; Sánchez-Román, Rodrigo; Marchamalo Sacristán, Miguel; Rodriguez-Sinobas, Leonor

    2016-04-01

    Nowadays, the concern of the effect of climate change on water availability on a global scale is getting bigger and bigger. In average, about 65 % of the world water consumption is devoted to irrigated agriculture. In countries such as Brazil, water scarcity has been a main issue in populated areas (i.e. São Paulo) in the last two years. This has affected not only water availability for the population but also irrigation water to maintain crop yield and Brazilian economy. Remote sensing is a tool broadly used in multiple fields of science such as water management in irrigated agriculture. Actually, there are several satellites moving around the earth, and they take images of every place in a weekly or biweekly basis. The images can be downloaded from the internet site at no cost by the users. Then, they are used to determine the vegetation index NDVI which is based in the energy reflected in red and infrared spectrum and it depends on the vegetation photosynthetic activity. Within the above context, this study focus on remote sensing monitoring of a bean crop located in the basin of Boi Branco, São Paulo - Brazil, which is irrigated by pivot center. The images from the Landsat and Modis satellites were downloaded throughout the bean growing period and then, they were processed and analyzed with the Qgis software. In addition, soil moisture was measured by several TDR probe sensors deployed in the irrigated area, and the leaf area index was measured as well in the field. Both variables were used to estimate the Normalized Difference Vegetation Index (NDVI) for each bean phenology state.

  1. Post-Hurricane Ivan coastal oblique aerial photographs collected from Crawfordville, Florida, to Petit Bois Island, Mississippi, September 17, 2004

    Science.gov (United States)

    Morgan, Karen L.M.; Krohn, M. Dennis; Peterson, Russell D.; Thompson, Philip R.; Subino, Janice A.

    2015-01-01

    The U.S. Geological Survey (USGS) conducts baseline and storm response photography missions to document and understand the changes in vulnerability of the Nation's coasts to extreme storms. On September 17, 2004, the USGS conducted an oblique aerial photographic survey from Crawfordville, Florida, to Petit Bois Island, Mississippi aboard a Piper Navajo Chieftain (aircraft) at an altitude of 500 feet (ft) and approximately 1,000 ft offshore. This mission was flown to collect post-Hurricane Ivan data for assessing incremental changes in the beach and nearshore area since the last survey in 2001, and the data can be used in the assessment of future coastal change.

  2. Oxygen-enhanced combustion

    CERN Document Server

    Baukal, Charles E

    2013-01-01

    Combustion technology has traditionally been dominated by air/fuel combustion. However, two developments have increased the significance of oxygen-enhanced combustion-new technologies that produce oxygen less expensively and the increased importance of environmental regulations. Advantages of oxygen-enhanced combustion include less pollutant emissions as well as increased energy efficiency and productivity. Oxygen-Enhanced Combustion, Second Edition compiles information about using oxygen to enhance industrial heating and melting processes. It integrates fundamental principles, applications, a

  3. Viewpoint held by the -Robin des bois- environment protection association regarding radioactive waste; Point de vue de l'association Robin des Bois sur la gestion des dechets radioactifs

    Energy Technology Data Exchange (ETDEWEB)

    Bonnemains, J. [Association de protection de l' Homme et de l' environnement Robin des Bois, 75 - Paris (France)

    2011-02-15

    For twenty years, the 'Robin des Bois' association has held the belief that every country must manage the hazardous waste, including radioactive waste, that it produces. The vehemence of German anti-nuclear activists in rejecting the return of waste produced by recycling irradiated fuel from German nuclear power plants runs counter to the principles of responsibility and proximity to which ecologists claim to adhere. There are more reasonable means available than refusing to manage end-of-cycle nuclear waste, such as blockading power plants or the uranium enrichment plant in Gronau which supplies the nuclear power industry worldwide. In Lower Saxony, the La Hague plant located on this West European headland is therefore thought of as the ideal hideaway for this waste. It is true that the list of radioactive scrap, hospital waste, asbestos from the steamer, the Norway, and WEEE exported by Germany is long. Robin des Bois is against recycling irradiated fuel as it facilitates the proliferation and dispersion of plutonium and other radionuclides into the environment. The association has revealed many scandals and lies related to recycling in areas other than the nuclear industry, which have been concealed behind the false good ecological and systematically positive image of recycling. (author)

  4. Etudes théoriques et expérimentales de la combustion dans les moteurs Diesel d'automobiles à injection directe et à préchambre Theoretical and Experimental Research on Combustion in Diesel Automotive Engines with Direct Injection and a Prechamber

    Directory of Open Access Journals (Sweden)

    Douaud A.

    2006-11-01

    Full Text Available Certaines techniques récemment développées pour la modélisation mathématique et les investigations expérimentales sur moteur Diesel sont présentées. On insiste sur l'importance de la validation croisée entre calcul et mesure. Taux d'injection, aérodynamique interne, développement du spray sont analysés en relation avec la géométrie des chambres de combustion. Des exemples, portant principalement sur des considérations de rendement énergétiques et d'émissions polluantes sont présentés à la fois sur le moteur Diesel à préchambre et le moteur Diesel à injection directe. Various techniques developed recently for the mathematical modeling and experimental investigating of diesel engines are described. Emphasis is placed on the importance of crosschecking between computing and measuring. The injection rate, internal aerodynamics and spray development are analyzed in relation to the geometry of combustion chambers. Examples mainly concerning matters of energy efficiency and pollutant emissions are given for diesel engines both with a prechamber and with direct injection.

  5. (Resignificações culturais no mundo rural mineiro: o carro de boi - do trabalho ao festar (1950-2000

    Directory of Open Access Journals (Sweden)

    Maria Clara Tomaz Machado

    2006-06-01

    Full Text Available Este artigo versa sobre a reinvenção de uma das atividades de trabalho mais comuns ao mundo rural do interior de Minas Gerais. Nesse cenário, o carro de bois era parte integrante de uma economia de subsistência, cujas relações sociais eram mediadas pela interação do homem com a natureza. Na década de 1970, com as transformações econômicas, quando o cerrado torna-se terras produtivas em grãos para exportação, o carro de bois é celebrado em festa popular e as práticas sociais em seu entorno são (refiguradas, (resignificando sociabilidades e memórias de um tempo que não mais existe.This article argues about the reinvention of a common work activity from the agricultural world in Minas Gerais countryside. In this work activity, the ox-cart was integrant part of a subsistence economy, whose social relations were mediated by the interaction of the man with the nature. In the 1970's, with the economic transformations, when the open pasture becomes productive lands in grains for exportation, the ox-cart is celebrated in a popular party and the social practical related to it is transformed, earning a new social meanning and memories of a time that does not exist anymore.

  6. Apprentissage collaboratif en ligne: communauté de recherche et de pratique (Entretien avec Christian Bois

    Directory of Open Access Journals (Sweden)

    Orazio Maria Valastro

    2003-09-01

    Full Text Available Le savoir vient d'abord de ce que l'on "donne des noms" aux dynamiques qui émergent de la situation analytique et des discours des protagonistes. Il vient ensuite de ce que l'on identifie des ressemblances de contenu et ou de forme entre un signe actuel et un fait passé. Ou encore il vient de la créativité de l'analysant pour aménager sa place dans la jungle des désirs, des territoires, des jalousies et des envies. Enfin il vient du jeu subtil entre le réel, l'imaginaire et le symbolique. Dan la communauté de recherche et de pratique il y a aussi des dynamiques subtiles à identifier.

  7. Analisis Kebijakan dan Efektivitas Organisasi

    Directory of Open Access Journals (Sweden)

    Amir Syarifudin Kiwang

    2015-05-01

    Full Text Available Penerapan Peraturan Gubernur Nusa Tenggara Timur Nomor 8 Tahun 2011 tentang Organisasi dan Tata Kerja Unit Pelaksana Teknis Pendidikan dan Pelatihan Koperasi dan Usaha Mikro Kecil dan Menengah pada Dinas Koperasi dan Usaha Mikro Kecil dan Menengah Provinsi Nusa Tenggara Timur adalah dalam rangka untuk meningkatkan efektivitas kerja organisasi pada UPT Diklat Koperasi dan UMKM. Penelitian ini berusaha untuk melihat dampak kebijakan organisasi terhadap efektivitas organisasi dengan menggunakan enam elemen variabel dari kebijakan dan praktik manajemen. Keenam elemen tersebut adalah penetapan tujuan strategis, pencarian dan pemanfaatan sumber daya, lingkungan prestasi, proses komunikasi, kepemimpinan dan pengambilan keputusan, serta adaptasi dan inovasi organisasi. Penelitian kualitatif ini menggunakan pendekatan studi kasus. Teknik analisis data yang digunakan adalah analisis data model Miles dan Huberman, yang terdiri atas reduksi data, display/penyajian data, dan kesimpulan/verifikasi. Hasil penelitian menunjukkan bahwa efektivitas organisasi pada UPT Diklat koperasi dan UMKM belum berjalan secara baik, hal ini dapat dilihat dari beberapa hal antara lain, belum adanya tenaga spesialisasi pengelola diklat dan tenaga khusus (sarjana di bidang perkoperasian dan kondisi lingkungan kerja (lingkungan prestasi pada UPT Diklat koperasi dan UMKM yang belum efektif. Penempatan pegawai juga belum tepat, mutasi ke UPT Diklat Koperasi dan UMKM tidak memperhatikan latar belakang pendidikan dan spesialisasi/keahlian pegawai sehingga membutuhkan waktu dalam proses penyesuaian serta menurunkan jumlah pelaksanaan diklat dikarenakan keterbatasan alokasi dana.

  8. Combustion 2000

    Energy Technology Data Exchange (ETDEWEB)

    A. Levasseur; S. Goodstine; J. Ruby; M. Nawaz; C. Senior; F. Robson; S. Lehman; W. Blecher; W. Fugard; A. Rao; A. Sarofim; P. Smith; D. Pershing; E. Eddings; M. Cremer; J. Hurley; G. Weber; M. Jones; M. Collings; D. Hajicek; A. Henderson; P. Klevan; D. Seery; B. Knight; R. Lessard; J. Sangiovanni; A. Dennis; C. Bird; W. Sutton; N. Bornstein; F. Cogswell; C. Randino; S. Gale; Mike Heap

    2001-06-30

    . To achieve these objectives requires a change from complete reliance of coal-fired systems on steam turbines (Rankine cycles) and moving forward to a combined cycle utilizing gas turbines (Brayton cycles) which offer the possibility of significantly greater efficiency. This is because gas turbine cycles operate at temperatures well beyond current steam cycles, allowing the working fluid (air) temperature to more closely approach that of the major energy source, the combustion of coal. In fact, a good figure of merit for a HIPPS design is just how much of the enthalpy from coal combustion is used by the gas turbine. The efficiency of a power cycle varies directly with the temperature of the working fluid and for contemporary gas turbines the optimal turbine inlet temperature is in the range of 2300-2500 F (1260-1371 C). These temperatures are beyond the working range of currently available alloys and are also in the range of the ash fusion temperature of most coals. These two sets of physical properties combine to produce the major engineering challenges for a HIPPS design. The UTRC team developed a design hierarchy to impose more rigor in our approach. Once the size of the plant had been determined by the choice of gas turbine and the matching steam turbine, the design process of the High Temperature Advanced Furnace (HITAF) moved ineluctably to a down-fired, slagging configuration. This design was based on two air heaters: one a high temperature slagging Radiative Air Heater (RAH) and a lower temperature, dry ash Convective Air Heater (CAH). The specific details of the air heaters are arrived at by an iterative sequence in the following order:-Starting from the overall Cycle requirements which set the limits for the combustion and heat transfer analysis-The available enthalpy determined the range of materials, ceramics or alloys, which could tolerate the temperatures-Structural Analysis of the designs proved to be the major limitation-Finally the commercialization

  9. Combustion 2000

    Energy Technology Data Exchange (ETDEWEB)

    A. Levasseur; S. Goodstine; J. Ruby; M. Nawaz; C. Senior; F. Robson; S. Lehman; W. Blecher; W. Fugard; A. Rao; A. Sarofim; P. Smith; D. Pershing; E. Eddings; M. Cremer; J. Hurley; G. Weber; M. Jones; M. Collings; D. Hajicek; A. Henderson; P. Klevan; D. Seery; B. Knight; R. Lessard; J. Sangiovanni; A. Dennis; C. Bird; W. Sutton; N. Bornstein; F. Cogswell; C. Randino; S. Gale; Mike Heap

    2001-06-30

    . To achieve these objectives requires a change from complete reliance of coal-fired systems on steam turbines (Rankine cycles) and moving forward to a combined cycle utilizing gas turbines (Brayton cycles) which offer the possibility of significantly greater efficiency. This is because gas turbine cycles operate at temperatures well beyond current steam cycles, allowing the working fluid (air) temperature to more closely approach that of the major energy source, the combustion of coal. In fact, a good figure of merit for a HIPPS design is just how much of the enthalpy from coal combustion is used by the gas turbine. The efficiency of a power cycle varies directly with the temperature of the working fluid and for contemporary gas turbines the optimal turbine inlet temperature is in the range of 2300-2500 F (1260-1371 C). These temperatures are beyond the working range of currently available alloys and are also in the range of the ash fusion temperature of most coals. These two sets of physical properties combine to produce the major engineering challenges for a HIPPS design. The UTRC team developed a design hierarchy to impose more rigor in our approach. Once the size of the plant had been determined by the choice of gas turbine and the matching steam turbine, the design process of the High Temperature Advanced Furnace (HITAF) moved ineluctably to a down-fired, slagging configuration. This design was based on two air heaters: one a high temperature slagging Radiative Air Heater (RAH) and a lower temperature, dry ash Convective Air Heater (CAH). The specific details of the air heaters are arrived at by an iterative sequence in the following order:-Starting from the overall Cycle requirements which set the limits for the combustion and heat transfer analysis-The available enthalpy determined the range of materials, ceramics or alloys, which could tolerate the temperatures-Structural Analysis of the designs proved to be the major limitation-Finally the commercialization

  10. Assessment of availability water at Boi Branco watershed through the water climate balance and growing

    Science.gov (United States)

    Alexandre de Lima Sales, Mariana; Máximo Sanchez-Román, Rodrigo; Rodríguez-Sinobas, Leonor; Ribeiro da Silva de Souza, Joao Victor; Nonato Farias Monteiro, Raimundo

    2015-04-01

    The water resources are fundamental to the development of several economic activities. Concerning the agriculture production, the water can represent close to 90% of the physical constitution of the plant. The low water supply during the growing stage of vegetables can make the agricultural production not viable and can even seriously affect the balance of the ecosystem. One way to calculate the amount of water in a determined system is by means of the water balance, that is an important tool for the assessment process of the water cycle in a specific region. The main goal of this work was to establish the water balance in the watershed Boi Branco-SP, so that it can be used as a tool for the hydro-agricultural and environmental planning of the region. For the water climate balance, it was used data of the historical series of the region (1971 - 1995). The data of evapotranspiration were estimated by the method Thornthwaite. The water climate balance showed low water supply total annual of 10.1 mm, and exceeding of 319.7 mm, wherein in month January an exceeding of 92.6 to the average monthly precipitation; given the effective monthly precipitation with probability of 75% low water supply in the soil it is 238.8 mm and the exceeding 56.8 mm. When these data are added to the ones of the crop, as a crop coefficient and availability factor of water in the soil, it is observed that all crops which are inserted in the watershed present low water supply in all the months they are in the field. As the water balance is an important assessment of a specific region, further studies are recommended, with data collected in the region, so that the update in the results is obtained. Thus, it is also recommended the establishment of a system for agrometerological collecting data to help the irrigation management and other agricultural activities. Keyword: Water agricultural planning, water capability available in the soil, evapotranspiration.

  11. Custo de liquidez do contrato futuro de boi gordo da BM&FBOVESPA

    Directory of Open Access Journals (Sweden)

    Charles Luan Marquezin

    2014-08-01

    Full Text Available O custo de liquidez é uma variável que não é diretamente conhecida pelos investidores, sendo tão importante quanto os demais custos de transação envolvidos em mercados futuros. Sua relevância são os fatos de poder resultar na redução do retorno esperado pelos investidores, ocorrer perda de participantes potenciais no mercado, o preço não servir mais como papel de comunicação de informação, ser essencial para a decisão da utilização de um contrato futuro, além de ser uma variável fundamental para o custo de oportunidades de hedgers e especuladores. O propósito deste trabalho foi analisar o custo de liquidez relativo ao contrato futuro de boi gordo da BM&FBovespa, no período de setembro de 2010 a fevereiro de 2013, utilizando dados intradiários, contendo 355.311 registros de negócios efetuados. Para tanto, foram utilizados os modelos de Roll (1984, Chu, Ding e Pyun (1996, Thompson e Waller (1987 e Wang, Yau e Baptiste (1997, todos bastante discutidos na literatura internacional. Os resultados mostram que, embora as metodologias adotadas sejam diferentes, três dos quatro métodos apresentaram correlações elevadas entre eles. Os contratos analisados apresentaram custo de liquidez médio de R$ 0,13 por arroba, sendo relativamente baixo quando comparado ao volume financeiro destinado para cada contrato. Quanto aos determinantes, o tempo de maturidade teve impactos nos resultados, pois os contratos acima de 80 dias úteis até o vencimento e de até cinco dias úteis até o vencimento tiveram custo de liquidez mais elevado. Os contratos que tiveram menores números de negócios efetuados, contratos negociados e volume, foram os que tiveram maiores custo de liquidez. A contribuição deste estudo está na geração de informações fundamentais para profissionais do mercado, produtores e agentes do mercado, que tomam suas decisões em ambientes de incertezas, buscando mensurar o custo de uma variável que não é diretamente

  12. On Education and Social Power: The Educational Theories of W.E.B. Du Bois and Their Relevance to African-Centered Education

    Science.gov (United States)

    Rashid, Kamau

    2009-01-01

    W.E.B. Du Bois offered an educational theory that sought to contextualize the role of schools and their relevance to social justice. Responding to the social-historical malaise of African American subordination, he proposed that schools could provide the impetus towards cultural, economic, and political empowerment. Moreover, his theory of…

  13. Of Victorianism, Civilizationism, and Progressivism: The Educational Ideas of Anna Julia Cooper and W.E.B. Du Bois, 1892-1940

    Science.gov (United States)

    Alridge, Derrick P.

    2007-01-01

    Anna Julia Cooper and W.E.B. Du Bois were two of the most prominent African-American educators of the late 19th and early 20th centuries. During this period, they both envisioned a broad education tailored specifically to the critical intellectual and vocational needs of the entire black community. In this essay, the author examines common themes…

  14. Identificação de itens alimentares constituintes da dieta dos peixes-boi marinhos (Trichechus manatus na região Nordeste do Brasil

    Directory of Open Access Journals (Sweden)

    João Carlos Gomes Borges

    2008-01-01

    Full Text Available http://dx.doi.org/10.5007/2175-7925.2008v21n2p77 Os peixes-boi marinhos são considerados herbívoros oportunistas, consumindo uma grande variedade de itens alimentares. Objetivou-se com este trabalho identificar os itens alimentares constituintes da dieta dos peixe-boi marinhos em vida livre, na região Nordeste do Brasil. Para tanto  foram coletadas amostras de conteúdo estomacal, provenientes de seis carcaças de peixes-boi marinhos, além de amostras fecais de 11 animais nativos e cinco espécimes reintroduzidos. O material foi identificado ao nível de gênero e/ou espécie, através de aspectos morfo-anatômicos, sendo identificadas 21 espécies entre macroalgas, fanerógamas e cnidários. Através destas análi ses, foi possível observar que os peixes-boi marinhos alimentaram-se de uma grande diversidade de plantas aquáticas, com predominância das algas vermelhas.

  15. On Reconsidering Park, Johnson, DuBois, Frazier and Reid: A Reply to Benjamin Bowser's "The Contribution of Blacks to Sociological Knowledge."

    Science.gov (United States)

    Watts, Jerry G.

    1983-01-01

    Contends that Benjamin Bowser's essay (title cited above) contains conceptual and factual errors on such matters as the relationship of African slavery to European economic expansion; influence of Social Darwinism; and the role of Robert Park, W.E.B. DuBois, E. Franklin Frazier, and other Black historians in sociological research in this country.…

  16. Outflanking Oppression: African American Contributions to Critical Pedagogy as Developed in the Scholarship of W. E. B. DuBois and Carter G. Woodson.

    Science.gov (United States)

    Graves, Karen L.

    The educational philosophies of W. E. B. DuBois and Carter G. Woodson position them as important figures in the development of critical pedagogy. At its core, critical pedagogy is a hegemonic theory that focuses on the manifestation of power in society, with particular attention to how certain cultural groups learn to accept, engage in, or resist…

  17. The Black Leader's Rhetorical Dilemma: An Analysis of the Debate Between W.E.B. DuBois and Booker T. Washington.

    Science.gov (United States)

    Harris, Thomas E.

    Improving the economic condition of the Negro was a fundamental concern of both W. E. B. DuBois and Booker T. Washington. It was Washington's view that the Negro should be willing to perform menial tasks as a means for gaining a foothold in the economic structure. He counseled the Negro to start at the bottom. Washington's philosophy centered on…

  18. Etudes théoriques et expérimentales de la combustion dans les moteurs Diesel d'automobiles à injection directe et à préchambre Theoretical and Experimental Research on Combustion in Diesel Automotive Engines with Direct Injection and a Prechamber

    OpenAIRE

    Douaud A.; Pinchon P.

    2006-01-01

    Certaines techniques récemment développées pour la modélisation mathématique et les investigations expérimentales sur moteur Diesel sont présentées. On insiste sur l'importance de la validation croisée entre calcul et mesure. Taux d'injection, aérodynamique interne, développement du spray sont analysés en relation avec la géométrie des chambres de combustion. Des exemples, portant principalement sur des considérations de rendement énergétiques et d'émissions polluantes sont présentés à la foi...

  19. Keratoacanthoma Dan Perawatannya

    OpenAIRE

    Indah Heriyanti

    2008-01-01

    Keratoacanthoma adalah suatu tumor jinak yang berasal dari jaringan epitel dan biasanya di jumpai pada permukaan kulit yang umumnya terjadi pada bagian kulit yang sering terkena sinar matahari dimana tumor ini dapat sembuh dengan spontan. Lesi ini biasanya berawal sebagai makula yang kecil yang berwarna merah dan kemudian menjadi papula yang kokoh dan bersisik pada permukaanya. Papul ini dengan cepat membesar selama 2 sampai 8 minggu. Pada awalnya berbentuk bulat atau oval,kokoh menonjol ...

  20. O Boi-Bumbá de Parintins, Amazonas: breve história e etnografia da festa Boi-Bumbá in Parintins, Amazonas: a brief history and ethnography of the festival

    Directory of Open Access Journals (Sweden)

    Maria Laura Viveiros de Castro Cavalcanti

    2000-09-01

    Full Text Available O festival dos Bois-Bumbás de Parintins (AM alcançou nos últimos anos dimensões massivas, conjugando, de modo inesperado e criativo, padrões e temas culturais tradicionais a procedimentos e abordagens modernizantes. É hoje uma das grandes manifestações populares do Norte do Brasil, atraindo milhares de pessoas não só de Manaus (a capital do estado e cidades próximas, como de diversas partes do país. O artigo analisa-o a partir de uma perspectiva antropológica, centrada no estudo dos rituais. Tece considerações sobre o estudo e a história do folguedo no Brasil. Empreende uma etnografia do festival, situando-o no contexto da região amazônica e examinando a trajetória percorrida desde sua criação aos dias atuais. Sugere, finalmente, a interpretação do Bumbá como um novo nativismo que, ao valorizar as raízes regionais indígenas, afirma positivamente uma identidade cultural cabocla.In recent years, the Boi-Bumbá festival in Parintins, in the state of Amazonas, has reached massive proportions. In surprising and creative ways, the festival mixes traditional cultural patterns and themes together with modernizing procedures and approaches. It has now become a major expression of popular culture in North Brazil, drawing thousands of people not only from the state capital of Manaus and nearby cities but also from all over the country. The article analyzes the Boi-Bumbá from an anthropological perspective, centered on the study of rituals and including observations on the study and history of folguedo in Brazil. Looking from an ethnographic angle, the article situates the festival in the context of the Amazon and examines the road taken from its creation to today. In conclusion, the Bumbá is interpreted as a new nativism that serves as a positive affirmation of cabocla cultural identity by valuing indigenous regional roots.

  1. DEPRESI DAN GANGGUAN TIDUR

    Directory of Open Access Journals (Sweden)

    Wayan Eko Radityo

    2012-12-01

    Full Text Available Depresi merupakan gangguan mood berupa kesedihan yang intens, berlangsung dalamwaktu lama, dan mengganggu kehidupan normal yang insidennya semakin meningkatseiring dengan meningkatnya tekanan hidup. Tahun 2020, depresi diperkirakanmenempati urutan kedua penyakit di dunia. Gejala-gejala depresi terdiri dari gangguanemosi, gangguan kognitif, keluhan somatik, gangguan psikomotor, dan gangguanvegetatif. Salah satu gejala depresi yang muncul adalah gangguan tidur yang bisaberupa insomnia, bangun secara tiba-tiba, dan hipersomnia. Hal ini disebabkan olehgangguan neurotransmiter dan regulasi hormon. Selain sebagai gejala depresi, gangguantidur juga bisa merupakan penyebab depresi. Beberapa penelitian memberikanhubungan gangguan tidur dapat meningkatkan risiko depresi di kemudian hari.

  2. On supersonic combustion

    Institute of Scientific and Technical Information of China (English)

    袁生学

    1999-01-01

    Some basic concepts and features of supersonic combustion are explained from the view point of macroscopic aerodynamics. Two kinds of interpretations of supersonic combustion are proposed. The difference between supersonic combustion and subsonic combustion is discussed, and the mechanism of supersonic combustion propagation and the limitation of heat addition in supersonic flow are pointed out. The results of the calculation of deflagration in supersonic flow show that the entropy increment and the total pressure loss of the combustion products may decrease with the increase of combustion velocity. It is also demonstrated that the oblique detonation wave angle may not be controlled by the wedge angle under weak underdriven solution conditions and be determined only by combustion velocity. Therefore, the weak underdriven solution may become self-sustaining oblique detonation waves with a constant wave angle.

  3. Combustion Research Facility

    Data.gov (United States)

    Federal Laboratory Consortium — For more than 30 years The Combustion Research Facility (CRF) has served as a national and international leader in combustion science and technology. The need for a...

  4. Caracterização fisico-química e sensorial de geleia de mamão com araçá-boi Physicochemical and sensorial characterization of papaya and araça boi jelly

    Directory of Open Access Journals (Sweden)

    Eliseth de Souza Viana

    2012-12-01

    Full Text Available Foram elaboradas quatro formulações de geleia com as seguintes proporções de mamão (Carica papaya (M e araçá-boi (Eugenia stipitata (AB: F1 (70% M: 30% AB, F2 (60% M: 40% AB, F3 (40%M : 60% AB e F4 (30% M : 70% AB. Todas as formulações apresentaram proporção final de polpa e açúcar de 1:1, com 0,5% de pectina e teor de 65% de sólidos solúveis. As geleias foram analisadas quanto às características físico-químicas e sensoriais (teste de aceitação e preferência. O teste de aceitação foi realizado por 50 consumidores, por meio de escala hedônica de 7 pontos, avaliando-se os atributos: aparência, cor, aroma, sabor e textura. A acidez titulável variou entre 0,77 e 1,72 g de ácido cítrico100 g-1, estando dentro da faixa de acidez determinada para diferentes geleias de frutas. O teor de açúcares redutores foi mais elevado na formulação F4. As formulações apresentaram índice de aceitação acima de 90% para os atributos aparência, cor, aroma e textura. As formulações F1 e F2, com menores concentrações de araçá-boi, apresentaram maior aceitação para os atributos sensoriais cor e sabor. Entretanto, a formulação F1 apresentou elevada intenção de compra e foi considerada pelo mapa de preferência interno a mais aceita para todos os atributos avaliados, sendo, portanto, a mais adequada para a industrialização e consumo.Four formulations of jelly were prepared with the following proportions of papaya (Carica papaya (P and araçá-boi (Eugenia stipitata (AB: F1 (70% P: 30% AB, F2 (60% P: 40% AB, F3 (40% P: 60% AB and F4 (30% P: 70% AB. Each formulation showed a final proportion of pulp and sugar of 1:1, 0.5% of pectin and 65 ºBrix of soluble solids content. The jellies were analyzed by the physicochemical and sensorial characteristics (acceptance and preference. The sensorial acceptance was performed by 50 consumers using a 7-point hedonic scale, evaluating the following attributes: general appearance, color

  5. Environmental assessment of domestic wood heating; Bilan environnemental du chauffage domestique au bois

    Energy Technology Data Exchange (ETDEWEB)

    Labouze, E.; Le Guerin, Y. [BIO Intelligence Service, 94 - Ivry sur Seine (France)

    2009-03-15

    In France, more than 6 million families are concerned with the domestic use of wood energy. The wood energy plan of ADEME aims at encouraging the development of wood energy in three sectors: domestic, collective/tertiary, industrial. In that context, ADEME commissioned BIO Intelligence Service a life cycle assessment of collective and industrial heating in order to give objective environmental information and to analyse the strength and weakness of wood heating. Three scenarios were defined according to the origin of wood: firewood, granules and sawmill chips. The study also proposes a comparison to other heating systems: gas, fuel oil and electricity. The life cycle analysis applied to domestic heating consists in quantifying the environmental impacts of the whole linked steps: extraction of fuel, distribution, final use... Every system under study has been divided according to three main stages: - Extraction of raw materials; - Transport of fuels until the place of storage or distribution; - Use (combustion or upstream production of energy in the case of electricity). The environmental impacts are estimated with the following indicators: - Non renewable primary energy balance sheet; - Global warming potential; - Air acidification potential; - Eutrophication potential; - Emissions of toxic metals in air and in soils. The results show that wood heating have the best energy and global warming balance sheets. For air acidification, the combustion stage is pre-dominant regardless of the energy resource. This is mainly due to nitrogen and sulphur oxides airborne emissions. For wood heating, preparation requires fuel consumption which also contributes significantly to nitrogen oxides emissions. The comparison with conventional energy shows that the wood scenarios are well positioned in relation to fuel and electricity for this indicator. Gas appears to be the best heating option for this indicator. The contribution eutrophication is also due to nitrogen oxides airborne

  6. Combustion en lit fluidisé Fluidized-Bed Combustion

    Directory of Open Access Journals (Sweden)

    Chrysostome G.

    2006-11-01

    Full Text Available Après quelques rappels généraux sur la fluidisation où seront présentés en par-ticulier les avantages qu'elle offre en combustion, on exposera l'état actuel du développement des générateurs à lit fluidisé opérant avec les combustibles suivants : charbon, combustibles pétroliers, résidus divers ; il sera fait mention de la contribution de l'Institut Français du Pétrole (IFP dans les deux derniers domaines.On présentera ensuite les installations les plus récentes en traitement de minerais (grillage des sulfures, calcination de calcaires. En raison de son importance on examinera encore les possibilités de désulfuration au sein de lits fluidisés, de même que seront commentés les travaux de régénération des absorbants.On terminera enfin en mentionnant les développements des lits circulants ou rapides, considérés comme les réacteurs de la seconde génération. After a general review of fluidization including in particular the advantages it offers for combustion, this article describes the present state of the development of fluidized-bed gcnerators operating with the following fuels : cool, petroleum fuels, different residues. Mention is made of Institut Français du Pétrole (IFP contribution in the last two fields. Then the most recent ore-treating installations are described (roasting of sulfides, calcination of limestones. Because of its importance, the possibilities of desulfurizoticn inside fluidized beds is examined, and research on the regeneration of absorbants is commented on. The article ends by mentioning the development of circulating or fast beds which are considered as second generation reactors.

  7. Des changements concevables pour le secteur des transports dans l'objectif "Facteur 4"

    OpenAIRE

    Raux, Charles

    2007-01-01

    Au niveau mondial, les transports consomment 20% de l'énergie, dont 80% dans les transports routiers et 10% dans les transports aériens, et 95% de cette énergie est à base de pétrole. Le secteur des transports est l'un des principaux émetteurs de gaz à effet de serre dans la plupart des pays, et notamment du CO2 issu de la combustion des carburants fossiles. Pour que les transports contribuent significativement à l'objectif du « Facteur 4 » en 2050, trois pistes différentes mais complémentair...

  8. Offshore sand-shoal development and evolution of Petit Bois Pass, Mississippi-Alabama Barrier Islands, Mississippi, USA

    Science.gov (United States)

    Flocks, James G.; Kelso, Kyle W.; Twichell, Gregory C.; Buster, Noreen A.; Baehr, John N.; Rosati, Julie D.; Wang, Ping; Roberts, Tiffany M.

    2011-01-01

    Assessment of recently collected geophysical and sediment-core data identifies an extensive shoal field located off Dauphin and Petit Bois Islands. The shoals are the product of Pleistocene fluvial deposition and Holocene marine-transgressive processes, and their position and orientation oblique to the modern shoreline has been stable over the past century. The underlying stratigraphy has also influenced the evolution of the barrier platform and inlets. Buried distributary channels bisect the platform, creating erosion hotspots that breach during intense and repeated storms. Inlet growth inhibits littoral transport, and over time, reduces the down-drift sand supply. These relations demonstrate the role of the antecedent geologic framework on morphologic evolution. This study is part of the USGS Northern Gulf of Mexico Ecosystem Change and Hazard Susceptibility Project and the USACE Mississippi Coastal Improvements Program. These projects produced a wealth of information regarding coastal geology, geomorphology, and physical resources; some of the initial results are presented here.

  9. LA RÉÉCRITURE DU MYTHE D’ORPHÉE DANS LE BESTIAIRE OU CORTÈGE D’ORPHÉE DE GUILLAUME LA RÉÉCRITURE DU MYTHE D’ORPHÉE DANS LE BESTIAIRE OU CORTÈGE D’ORPHÉE DE GUILLAUME APOLLINAIRE

    Directory of Open Access Journals (Sweden)

    Julie Dekens

    2009-04-01

    Full Text Available Cette oeuvre se compose de trente courts poèmes – pour l’essentiel des quatrains formés d’octosyllabes ou d’alexandrins – accompagnés chacun d’une gravure sur bois de Raoul Dufy, auxquels sont associés des animaux dont le nom constitue le titre de ces pièces poétiques. Apollinaire joue donc dans ce cadre avec les motifs orphiques, aventure qui semble d’autant plus périlleuse si l’on s’aperçoit que ces thématiques ont été le terrain de jeu de nombreux poètes avant lui…Cette oeuvre se compose de trente courts poèmes – pour l’essentiel des quatrains formés d’octosyllabes ou d’alexandrins – accompagnés chacun d’une gravure sur bois de Raoul Dufy, auxquels sont associés des animaux dont le nom constitue le titre de ces pièces poétiques. Apollinaire joue donc dans ce cadre avec les motifs orphiques, aventure qui semble d’autant plus périlleuse si l’on s’aperçoit que ces thématiques ont été le terrain de jeu de nombreux poètes avant lui…

  10. Occurrence of different phytoplasma infections in wild herbaceous dicots growing in vineyards affected by bois noir in Tuscany (Italy

    Directory of Open Access Journals (Sweden)

    Guido MARCHI

    2015-12-01

    Full Text Available Wild herbaceous dicotyledonous plants (dicots showing symptoms ascribable to phytoplasma disorders were found to be widely distributed in organic vineyards in central Tuscany (Italy affected by bois noir, a grapevine yellows disease caused by “Candidatus Phytoplasma solani”. In 2010 symptomatic dicots were tentatively identified to species level and the incidence of symptoms estimated in two selected vineyards in the province of Florence. Incidence ranged from 2 to 77%, and was not related to the relative abundance of hosts since very common species as well as relatively rare ones were consistently found to be symptomatic. PCR indexing and 16S rRNA sequence analyses indicated that two phytoplasmas co-existed in the vineyards: “Ca. P. solani”, infecting the root systems of 17 taxa, and a phytoplasma closely related to “Ca. P. phoenicium”, infecting 11 taxa, and occasionally co-infecting the same plant. Regardless of the high frequency of both pathogens in the vineyards, only “Ca. P. solani” could be detected in the grapevines. Population screening by means of tuf sequence analyses revealed the presence of only the tuf-b “Ca. P. solani” type both in dicot hosts and grapevine. This supports current notions of bois noir epidemiology, indicating that some infected dicots act as sources of “Ca. P. solani” inoculum whereas others are dead-end hosts. When the same specimens were screened by sequence analysis of the vmp1 gene, evidence was found that different phytoplasma genotypes may be predominant in grapevines and dicots.

  11. Edificio de protección de las termas romanas de Sant Boi de Llobregat (Barcelona, España

    Directory of Open Access Journals (Sweden)

    González Moreno-Navarro, A.

    1999-10-01

    Full Text Available The roman baths at Sant Boi de Llobregat were built sometime around the year 200 BC and came to light in 1953. They are some of the best baths of this type to be found preserved in Catalonia. Some of the walls are almost five meters high, which is rare. There were originally seven rooms, and interesting remains of six of them can still be seen today. The baths were virtually abandoned in 1975, but restoration began in 1988, including the construction of a building to protect them and to enable the public to visit them. The design of the presentation trusts entirely to the emotion felt on seeing these ruins at first hand, and other elements, such as audio-visual effects or virtual reality, have been rejected.

    Las termas romanas de Sant Boi de Llobregat, construidas hacia el año 200 dC y descubiertas en 1953, son una de las instalaciones de este tipo mejor conservadas de Cataluña. Algunos de los muros alcanzan casi cinco metros, hecho poco habitual, y se mantienen seis de las siete salas de las que constaron, con restos muy interesantes. Casi abandonadas desde 1975, en 1988 se inició su recuperación definitiva y la construcción de un edificio que las protegiera y permitiera la visita pública. En su presentación se ha confiado toda la emoción del espectador a la contemplación directa de las ruinas y se ha renunciado a artificios, como audiovisuales efectistas o realidad virtual.

  12. Using Low-Cost Iron-Based Materials as Oxygen Carriers for Chemical Looping Combustion Utilisation de matériaux bon marché à base de fer comme transporteur d’oxygène dans la combustion en boucle chimique

    Directory of Open Access Journals (Sweden)

    Jerndal E.

    2011-03-01

    Full Text Available In chemical looping combustion with solid fuels, the oxygen-carrier lifetime is expected to be shorter than with gaseous fuels. Therefore, it is particularly important to use low-cost oxygen carriers in solid fuel applications. Apart from being cheap, these oxygen carriers should be able to convert the CO and H2 produced from the solid fuel gasification and be sufficiently hard to withstand fragmentation. Several low-cost iron-based materials displayed high conversion of syngas and high mechanical strength and can be used for further development of the technology. These materials include oxide scales from Sandvik and Scana and an iron ore from LKAB. All tested oxygen carriers showed higher gas conversion than a reference sample, the mineral ilmenite. Generally, softer oxygen carriers were more porous and appeared to have a higher reactivity towards syngas. When compared with ilmenite, the conversion of CO was higher for all oxygen carriers and the conversion of H2 was higher when tested for longer reduction times. The oxygen carrier Sandvik 2 displayed the highest conversion of syngas and was therefore selected for solid fuel experiments. The conversion rate of solid fuels was higher with Sandvik 2 than with the reference sample, ilmenite. Pour appliquer la combustion en boucle chimique à des charges solides, il est important d’utiliser des matériaux transporteurs d’oxygène bon marché. En effet, la durée de vie du transporteur d’oxygène risque d’être plus courte sur charge solide que sur charge gazeuse. Ces matériaux doivent également bien convertir le monoxyde de carbone et l’hydrogène résultant de la gasification, tout en étant suffisamment durs pour résister à la fragmentation. Plusieurs matériaux ont montré un potentiel de conversion élevé sur le gaz de synthèse ainsi qu’une résistance mécanique élevée, ce qui permet d’envisager leur utilisation lors des développements futurs de la technologie. Parmi ces

  13. Development and validation of an Eulerian model towards the simulation of fuel injection in internal combustion engines; Developpement et validation d'un modele eulerien en vue de la simulation des jets de carburants dans les moteurs a combustion interne

    Energy Technology Data Exchange (ETDEWEB)

    Truchot, B.

    2005-12-15

    The objective of this work is to develop an Eulerian two phase model to improve the prediction of fuel injection in internal combustion engines, particularly the dense liquid zone close to the nozzle. Lagrangian models, usually used in engine simulations, are based on the assumption of dispersed two phase flows with low liquid volume fraction, which is not fulfilled in the case of direct injection engine technology. Different Eulerian approaches are available in the literature. Physical phenomena that occur near the nozzle and characteristics of each model lead to the choice of a two fluids two pressures model. Several open terms appear in the equations of the model: exchange between the two phases and turbulent correlations. Closures of exchange terms are based on the spherical droplets hypothesis while a RANS approach is adopted to close turbulent correlations. This model has been integrated in the IFP CFD code, IFP-C3D. Several numerical tests and analytical validations (for single and two phase flows) have been then carried out in order to check the correct implementation of equations and the predictivity of the model and closures. Modifications in the turbulent model of the gas have required validations in both the gas phase (flow behind a sudden enlargement) and the liquid phase (pure liquid injection). A two phase mixing layer has been then used to validate the whole model. Finally, injection tests have been achieved under realistic conditions (similar to those encountered in automotive engines) in order to check the feasibility of engine computations using the developed Eulerian approach. These tests have also allowed to check the compatibility of this approach with the specificities of engine simulations (especially mesh movement). (author)

  14. Rapport d'activité 1993 - Centre technique du bois et de l'ameublement

    OpenAIRE

    (CTBA), Centre technique du bois et de l'ameublement

    1994-01-01

    1993 CAP TENU! L'année 92 avait été une année critique faite de choix fondamentaux et d'inquiétudes : - De choix fondamentaux, puisque nos grandes orientations stratégiques à l'horizon 96-2000 ont été définies. - D'inquiétudes liées aux risques financiers consécutifs à la chute des produits du Fonds Forestier National, au projet de réforme de la fiscalité des Centres Techniques qui alourdirait fortement nos charges, à la délocalisation du Centre... le tout dans une conjoncture économique diff...

  15. Boiler using combustible fluid

    Science.gov (United States)

    Baumgartner, H.; Meier, J.G.

    1974-07-03

    A fluid fuel boiler is described comprising a combustion chamber, a cover on the combustion chamber having an opening for introducing a combustion-supporting gaseous fluid through said openings, means to impart rotation to the gaseous fluid about an axis of the combustion chamber, a burner for introducing a fluid fuel into the chamber mixed with the gaseous fluid for combustion thereof, the cover having a generally frustro-conical configuration diverging from the opening toward the interior of the chamber at an angle of between 15/sup 0/ and 55/sup 0/; means defining said combustion chamber having means defining a plurality of axial hot gas flow paths from a downstream portion of the combustion chamber to flow hot gases into an upstream portion of the combustion chamber, and means for diverting some of the hot gas flow along paths in a direction circumferentially of the combustion chamber, with the latter paths being immersed in the water flow path thereby to improve heat transfer and terminating in a gas outlet, the combustion chamber comprising at least one modular element, joined axially to the frustro-conical cover and coaxial therewith. The modular element comprises an inner ring and means of defining the circumferential, radial, and spiral flow paths of the hot gases.

  16. La función de los instrumentos líticos en el asentamiento de Vale Boi (Algarve, Portugal Estudio del utillaje gravetiense y solutrense

    Directory of Open Access Journals (Sweden)

    Juan F. Gibaja

    2006-01-01

    Full Text Available En este trabajo presentamos los primeros resultados del análisis traceológico efectuado en el asentamiento de Vale Boi (Algane, Portugal. Los proyectos arqueológicos llevados a cabo desde la Universidade do Algarve están aportando información de inestimable valor sobre la ocupación humana durante el Paleolítico superior en el sur de Portugal. Entre los yacimientos descubiertos, Vale Boi constituye el yacimiento más importante documentado hasta el momento, no sólo por su amplia secuencia cronológica, sino también por su excepcional registro arqueológico.

  17. Coal combustion products

    Science.gov (United States)

    Kalyoncu, R.S.; Olson, D.W.

    2001-01-01

    Coal-burning powerplants, which supply more than half of U.S. electricity, also generate coal combustion products, which can be both a resource and a disposal problem. The U.S. Geological Survey collaborates with the American Coal Ash Association in preparing its annual report on coal combustion products. This Fact Sheet answers questions about present and potential uses of coal combustion products.

  18. Archive of Sidescan Sonar and Swath Bathymetry Data Collected During USGS Cruise 13CCT04 Offshore of Petit Bois Island, Gulf Islands National Seashore, Mississippi, August 2013

    Science.gov (United States)

    DeWitt, Nancy T.; Flocks, James G.; Kindinger, Jack G.; Bernier, Julie C.; Kelso, Kyle W.; Wiese, Dana S.; Finlayson, David P.; Pfeiffer, William R.

    2015-01-01

    In August of 2013, the U.S. Geological Survey conducted a geophysical survey offshore of Petit Bois Island, Mississippi. This effort was part of the U.S. Geological Survey Gulf of Mexico Science Coordination partnership with the U.S. Army Corps of Engineers to assist the Mississippi Coastal Improvements Program and the Northern Gulf of Mexico Ecosystem Change and Hazards Susceptibility Project, by mapping the shallow geologic stratigraphic framework of the Mississippi Barrier Island Complex.

  19. Dan Performer Mei Lanfang

    DEFF Research Database (Denmark)

    Risum, Janne

    2010-01-01

    The convention of performing female characters (dan characters) in Beijing opera, as practised by its most prominent male performer of female characters Mei Lanfang, and its and his cultural context and aesthetic aim...

  20. Liever kraanwater dan bronwater

    NARCIS (Netherlands)

    Kole, A.P.W.

    2011-01-01

    Een test in het Restaurant van de Toekomst van de invloed van CO2-labels op het aankoopgedrag van consumenten, heeft nog geen duidelijk beeld opgeleverd. Wel pakten mensen vaker kraanwater dan bronwater.

  1. Makna Dan Ideologi Punk

    OpenAIRE

    Daniar Wikan Setyanto

    2015-01-01

    Punk Sebagai sebuah subkultur telah diadaptasi oleh para remaja Indonesia bukan hanya sebagai semangat bermusik, namun merambah sebagai ideologi dan gaya hidup. Punk merupakan warisan budaya dari barat yang awalnya bergerak pada bidang musik, namun lambat lain punk telah menjadi sebuah identitas global yang mewakili para remaja radikal yang memiliki visi anti kemapanan dan anti pemerintah. Selain ideologinya yang kontroversi, punk mempengaruhi dinamika fashion di dunia. Asesoris punk diadapta...

  2. Research Combustion Laboratory (RCL)

    Data.gov (United States)

    Federal Laboratory Consortium — The Research Combustion Laboratory (RCL) develops aerospace propulsion technology by performing tests on propulsion components and materials. Altitudes up to 137,000...

  3. Combustion Byproducts Recycling Consortium

    Energy Technology Data Exchange (ETDEWEB)

    Paul Ziemkiewicz; Tamara Vandivort; Debra Pflughoeft-Hassett; Y. Paul Chugh; James Hower

    2008-08-31

    Ashlines: To promote and support the commercially viable and environmentally sound recycling of coal combustion byproducts for productive uses through scientific research, development, and field testing.

  4. Research Combustion Laboratory (RCL)

    Data.gov (United States)

    Federal Laboratory Consortium — The Research Combustion Laboratory (RCL) develops aerospace propulsion technology by performing tests on propulsion components and materials. Altitudes up to 137,000...

  5. Strobes: An oscillatory combustion

    NARCIS (Netherlands)

    Corbel, J.M.L.; Lingen, J.N.J. van; Zevenbergen, J.F.; Gijzeman, O.L.J.; Meijerink, A.

    2012-01-01

    Strobe compositions belong to the class of solid combustions. They are mixtures of powdered ingredients. When ignited, the combustion front evolves in an oscillatory fashion, and flashes of light are produced by intermittence. They have fascinated many scientists since their discovery at the beginni

  6. Strobes: An Oscillatory Combustion

    NARCIS (Netherlands)

    Corbel, J.M.L.; van Lingen, J.N.J.; Zevenbergen, J.F.; Gijzeman, O.L.J.; Meijerink, A.

    2012-01-01

    Strobe compositions belong to the class of solid combustions. They are mixtures of powdered ingredients. When ignited, the combustion front evolves in an oscillatory fashion, and flashes of light are produced by intermittence. They have fascinated many scientists since their discovery at the beginni

  7. Lectures on combustion theory

    Energy Technology Data Exchange (ETDEWEB)

    Burstein, S.Z.; Lax, P.D.; Sod, G.A. (eds.)

    1978-09-01

    Eleven lectures are presented on mathematical aspects of combustion: fluid dynamics, deflagrations and detonations, chemical kinetics, gas flows, combustion instability, flame spread above solids, spark ignition engines, burning rate of coal particles and hydrocarbon oxidation. Separate abstracts were prepared for three of the lectures. (DLC)

  8. Fifteenth combustion research conference

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1993-06-01

    The BES research efforts cover chemical reaction theory, experimental dynamics and spectroscopy, thermodynamics of combustion intermediates, chemical kinetics, reaction mechanisms, combustion diagnostics, and fluid dynamics and chemically reacting flows. 98 papers and abstracts are included. Separate abstracts were prepared for the papers.

  9. Coal Combustion Science

    Energy Technology Data Exchange (ETDEWEB)

    Hardesty, D.R. (ed.); Fletcher, T.H.; Hurt, R.H.; Baxter, L.L. (Sandia National Labs., Livermore, CA (United States))

    1991-08-01

    The objective of this activity is to support the Office of Fossil Energy in executing research on coal combustion science. This activity consists of basic research on coal combustion that supports both the Pittsburgh Energy Technology Center Direct Utilization Advanced Research and Technology Development Program, and the International Energy Agency Coal Combustion Science Project. Specific tasks for this activity include: (1) coal devolatilization - the objective of this risk is to characterize the physical and chemical processes that constitute the early devolatilization phase of coal combustion as a function of coal type, heating rate, particle size and temperature, and gas phase temperature and oxidizer concentration; (2) coal char combustion -the objective of this task is to characterize the physical and chemical processes involved during coal char combustion as a function of coal type, particle size and temperature, and gas phase temperature and oxygen concentration; (3) fate of mineral matter during coal combustion - the objective of this task is to establish a quantitative understanding of the mechanisms and rates of transformation, fragmentation, and deposition of mineral matter in coal combustion environments as a function of coal type, particle size and temperature, the initial forms and distribution of mineral species in the unreacted coal, and the local gas temperature and composition.

  10. Combustion of coffee husks

    Energy Technology Data Exchange (ETDEWEB)

    Saenger, M.; Hartge, E.-U.; Werther, J. [Technical Univ. Hamburg-Harburg, Chemical Engineering 1, Hamburg (Germany); Ogada, T.; Siagi, Z. [Moi Univ., Dept. of Production Engineering, Eldoret (Kenya)

    2001-05-01

    Combustion mechanisms of two types of coffee husks have been studied using single particle combustion techniques as well as combustion in a pilot-scale fluidized bed facility (FBC), 150 mm in diameter and 9 m high. Through measurements of weight-loss and particle temperatures, the processes of drying, devolatilization and combustion of coffee husks were studied. Axial temperature profiles in the FBC were also measured during stationary combustion conditions to analyse the location of volatile release and combustion as a function of fuel feeding mode. Finally the problems of ash sintering were analysed. The results showed that devolatilization of coffee husks (65-72% volatile matter, raw mass) starts at a low temperature range of 170-200degC and takes place rapidly. During fuel feeding using a non water-cooled system, pyrolysis of the husks took place in the feeder tube leading to blockage and non-uniform fuel flow. Measurements of axial temperature profiles showed that during under-bed feeding, the bed and freeboard temperatures were more or less the same, whereas for over-bed feeding, freeboard temperatures were much higher, indicating significant combustion of the volatiles in the freeboard. A major problem observed during the combustion of coffee husks was ash sintering and bed agglomeration. This is due to the low melting temperature of the ash, which is attributed to the high contents of K{sub 2}O (36-38%) of the coffee husks. (Author)

  11. Internal combustion engine

    Energy Technology Data Exchange (ETDEWEB)

    Helmich, M.J.; Hoagland, M.C.; Hubbard, R.L.; Schaub, F.S.

    1981-12-22

    A method of combusting natural gas fuel in a two cycle, turbocharged internal combustion engine substantially reduces the production of nitrogen-oxygen emissions. An improved turbocharger design provides increased air charging pressure, produces a controlled lean air/fuel mixture and lowers peak combustion temperatures. A jet cell ignition device ensures uniform, reliable ignition of the lean air/fuel mixture under all operating conditions and the lean air/fuel mixture in turn encourages complete fuel combustion and provides excellent combustion characteristics with methane, ethane and heavier paraffinic hydrocarbon fuels. These structural modifications and adjustment of other operating parameters combine to reduce nitric oxide (NO) and nitrogen dioxide (NO/sub 2/) emissions by as much as 75% while effecting only a negligible increase in fuel consumption.

  12. Fuels and Combustion

    KAUST Repository

    Johansson, Bengt

    2016-08-17

    This chapter discusses the combustion processes and the link to the fuel properties that are suitable for them. It describes the basic three concepts, including spark ignition (SI) and compression ignition (CI), and homogeneous charge compression ignition (HCCI). The fuel used in a CI engine is vastly different from that in an SI engine. In an SI engine, the fuel should sustain high pressure and temperature without autoignition. Apart from the dominating SI and CI engines, it is also possible to operate with a type of combustion: autoignition. With HCCI, the fuel and air are fully premixed before combustion as in the SI engine, but combustion is started by the increased pressure and temperature during the compression stroke. Apart from the three combustion processes, there are also a few combined or intermediate concepts, such as Spark-Assisted Compression Ignition (SACI). Those concepts are discussed in terms of the requirements of fuel properties.

  13. INOVASI DAN STRATEGI PENCAPAIANNYA

    Directory of Open Access Journals (Sweden)

    Liem Ferryanto

    2009-01-01

    Full Text Available Innovation is the way of life of any institution to profitably sustain its life. It starts with empathy, the ability to reach outside of ourselves and walk in someone else’s shoes, and optimal implementation of the newly advanced technology. Innovation shows its results through continuously hard working efforts known as "10 Thousand Hours Rule". As world uncertainty creates complexity we, instead of predicting, should therefore anticipate the future by creating and managing real options on contingent projects or elements of alternative optimal strategies. This should reflect into our portfolio strategy. Abstract in Bahasa Indonesia: Inovasi merupakan darah bagi suatu institusi untuk bisa hidup berkelanjutan serta menguntungkan. Inovasi berupa penemuan baru secara sistematis yang berawal dari empati, kemampuan untuk melihat dunia melalui mata orang lain, dan pemanfaatan secara optimal kemajuan teknologi yang ada. Inovasi baru menghasilkan buahnya melalui kerja keras, yaitu dengan mengikuti “Aturan 10 Ribu Jam” secara berkesinambungan. Ketidakpastian, interaksi, keterbatasan dan degradasi menciptakan kompleksitas tentang kebutuhan dan solusi di masa depan. Oleh sebab itu daripada meramalkan risiko yang bakal terjadi, kita sebaiknya memasang strategi berupa skenario untuk mereduksi akibat dari risiko masa depan yang tidak kita mengerti. Skenario ini dapat diperoleh lewat penciptaan dan penanganan beberapa pilihan nyata atas semua proyek antisipatif yang ada. Kata kunci: Inovasi, ketidakpastian dan kompleksitas, aturan 10 ribu jam, paradoks strategi, peta jalan, empati, kerja berkesinambungan.

  14. Le travail du bois de cerf à Villeparisis (Seine-et-Marne : un dépotoir au sein d’un atelier de potiers du Bas Empire Antler working at Villeparisis (Seine-et-Marne: a rubbish dump within a potters' workshop of the Late Roman Empire.

    Directory of Open Access Journals (Sweden)

    Franck Mallet

    2008-04-01

    Full Text Available Les fouilles archéologiques menées en 2003 et en 2005 à Villeparisis (Seine-et-Marne dans le centre ancien, ont mis au jour les vestiges d’une zone artisanale du Bas Empire regroupant un atelier de potiers mais également les témoins d’activités diverses, notamment 60 bois de cerfs au sein d’un dépotoir. Ceux-ci sont incomplets et portent de nombreuses traces de travail. Leur analyse n’a pas permis de déterminer les objets façonnés.The excavations, in Villeparisis’ town centre (Seine-et-Marne led in 2003 and 2005, have revealed a large craft area occupied during the Late Romantimes. The remains of a potter’s workshop and 60 red deer antlers have been discovered. These are incomplete and show many traces of work. Their analysis dœs no enable us to determine which artefacts had been made.

  15. 潘佩珠与孙中山%Phan Boi Chau and Sun Zhongshan (Sun Yat-sen)

    Institute of Scientific and Technical Information of China (English)

    于在照

    2006-01-01

    潘佩珠(Phan Boi Chau,1867—1940)是越南近代民族民主革命的伟大先驱、20世纪初期民族解放运动的领袖。孙中山(1866---1925)是中国近代民主革命的伟大先行者、杰出的爱国主义者和民族英雄。潘佩珠、孙中山在越、中两国近代史上均占有极其重要的地位。本文拟从20世纪初期亚洲历史的大背景下,从当时越中两国的社会现状出发,探讨潘佩珠和孙中山在救国事业、政治思想和革命主张等方面的内在联系和异同。同时从汉文化圈的视野来分析潘佩珠和孙中山政治思想中的汉文化基础。

  16. Cosmopolitan Fantasies, Aesthetics, and Bodily Value: W. E. B. Du Bois's Dark Princess and the Trans/Gendering of Kautilya

    Directory of Open Access Journals (Sweden)

    Vermonja R Alston

    2011-03-01

    Full Text Available The recent turn to a transnational American literary cosmopolitanism, coupled with efforts to move beyond what Paul Gilroy calls “ethnic absolutes,” have generated a resurgence of interest in W. E. B. Du Bois’s 1928 romance novel, Dark Princess. In addition, the last two decades have witnessed tentative movements to bridge the gap between American ethnic studies and postcolonial studies. This essay begins with the premise that there are compelling reasons to reread Dark Princess in light of twenty-first century debates about postcolonialism and cosmopolitanism, but it also points to some of the hazards of reading the novel outside of the social and aesthetic politics of the decades between the two world wars. The main part of this paper is an attempt to address the gendered and sexualized body politics of Du Bois’s aesthetic practices through an analysis of his essay “Criteria of Negro Art” and his novel Dark Princess. Allusions in the novel to the fourth-century BCE Indian political philosopher Kautilya and his treatise Arthasâstra suggests that Du Bois’s naming of his princess, Kautilya, was neither accidental nor insignificant. This trans/gendering of Kautilya speaks to a gender and sexual politics inherent to German theories of the aesthetic, to which Du Bois remained wedded. Scholarly fantasies of cosmopolitanism tend to ignore the extent to which such fantasies depend upon ideologies of family and the reproductive bodies of women.

  17. Application de la combustion catalytique aux turbines à gaz

    Science.gov (United States)

    Lebas, E.; Martin, G. H.

    2002-04-01

    La réduction des émissions d'oxydes d'azote sur turbines à gaz est obtenue par diminution de la température au sein de la chambre de combustion. Les techniques possibles comprennent l'injection d'eau ou de vapeur, la combustion pauvre et l'oxydation catalytique. Parmi celles-ci, la dernière est la plus prometteuse en terme de coûts et de performances, avec des émissions de NOx ramenées à un seul chiffre (typiquement inférieures à 3 ppm). L'IFP travaille depuis maintenant 10 ans sur l'adaptation de la combustion catalytique aux turbines à gaz. Les études ont été conduites au travers de projets européen tels que AGATA (Advance Gas Turbine for Automotive Application) et ULECAT (Ultra Low CATalytic combustor for dual fuel gas turbine). Le premier projet était destiné au développement de véhicules hybrides et le second à la combustion stationnaire de biogaz et de combustible Diesel. Les études en cours dans ce domaine portent sur le développement d'une unité de cogénération intégrant une microturbine à combustion catalytique. Les travaux menés à l'IFP concernent la mise au point de catalyseurs répondant aux exigences de la combustion catalytique en turbine à gaz et le développement de chambres de combustion permettant la mise en oeuvre de ces catalyseurs.

  18. PENGELOLAAN PENELITIAN DAN PENGEMBANGAN KESEHATAN DI THAILAND, MYANMAR, DAN INDIA

    Directory of Open Access Journals (Sweden)

    Anorital, SKM Anorital, SKM

    2012-09-01

    Full Text Available Dalam bulan Januari 1991 yang lalu, Sdr. Anorital, SKM (Ka. Subbag. Pengumpulan dan PengolahanData Badan Litbangkes dan H. Syafwani Mirin, SKM (Ka. Bag. Keuangan Badan Litbangkes memperoleh fellowship dari WHO untuk melakukan studi perbandingan ke institusi-institusi penelitian kesehatan di Thailand,Myanmar, dan India.Berikut di bawah ini tulisan bersangkutan yang menggambarkan secara garis besar pengelolaan penelitian dan pengembangan kesehatan pada masing-masing negara obyek studi. Semoga informasi yang terkandung pada tulisan ini dapat bermanfaat bagi pengembangan Badan Penelitian dan Pengembangan Kesehatan.

  19. DanRIS

    DEFF Research Database (Denmark)

    2009-01-01

    Windows 2000/XP/Vista platform computerprogram til DanRIS indberetning baseret på indskrivning af klienter på CPR, klientsforløb, faseforløb, ASI EuropASI composite score beregninger. Udgave: 2.1.0.5 Udgivelsesdato: 01-01-2009......Windows 2000/XP/Vista platform computerprogram til DanRIS indberetning baseret på indskrivning af klienter på CPR, klientsforløb, faseforløb, ASI EuropASI composite score beregninger. Udgave: 2.1.0.5 Udgivelsesdato: 01-01-2009...

  20. Makna Dan Ideologi Punk

    Directory of Open Access Journals (Sweden)

    Daniar Wikan Setyanto

    2015-08-01

    Full Text Available Punk Sebagai sebuah subkultur telah diadaptasi oleh para remaja Indonesia bukan hanya sebagai semangat bermusik, namun merambah sebagai ideologi dan gaya hidup. Punk merupakan warisan budaya dari barat yang awalnya bergerak pada bidang musik, namun lambat lain punk telah menjadi sebuah identitas global yang mewakili para remaja radikal yang memiliki visi anti kemapanan dan anti pemerintah. Selain ideologinya yang kontroversi, punk mempengaruhi dinamika fashion di dunia. Asesoris punk diadaptasi oleh budaya bopuler sebagai pernak-pernik fashion. Kini punk, telah menjadi bagian dari dunia fashion di seluruh dunia. Apa sebenarnya yang melatar belakangi munculnya Punk? bagaimana Punk bisa berkembang di Indonesia? Kata Kunci: punk, fashion, budaya populer

  1. Sandia Combustion Research: Technical review

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-07-01

    This report contains reports from research programs conducted at the Sandia Combustion Research Facility. Research is presented under the following topics: laser based diagnostics; combustion chemistry; reacting flow; combustion in engines and commercial burners; coal combustion; and industrial processing. Individual projects were processed separately for entry onto the DOE databases.

  2. MISKONSEPSI KONSEP ARCHAEBACTERIA DAN EUBACTERIA

    Directory of Open Access Journals (Sweden)

    Fina Nurul Khotimah

    2015-03-01

    Full Text Available Penelitian ini bertujuan untuk mengidentifikasi miskonsepsi siswa pada konsep Archaebacteria dan Eubacteria. Penelitian ini menggunakan metode survei dengan instrumen berupa pilihan ganda beralasan terbuka sebagai alat ukur. Unit analisis dalam penelitian adalah siswa MAN kelas X berjumlah 72 orang. Hasil analisis ditemukan ketidakpahaman pada konsep Archaebacteria dan Eubacteria (61% yang mendominasi kategori lainnya. Sedangkan kategori Paham konsep dan Miskonsepsi hanya sebesar 19% dan 20%. Miskonsepsi yang dialami siswa dari hasil diagnosa alasan terbuka menunjukkan lebih banyak miskonsepsi utuh dibandingkan dengan miskonsepsi sebagian. Miskonsepsi utuh teridentifikasi dengan siswa beranggapan bahwa bakteri lebih banyak menimbulkan kerugian daripada keuntungan bagi manusia dan lingkungan.

  3. Improving combustion efficiency

    Energy Technology Data Exchange (ETDEWEB)

    Bulsari, A.; Wemberg, A.; Multas, A. [Nonlinear Solutions Oy (Finland)

    2009-06-15

    The paper describes how nonlinear models are used to improve the efficiency of coal combustion while keeping NOx and other emissions under desired limits in the Naantali 2 boiler of Fortum Power and Heat Oy. 16 refs., 6 figs.

  4. Fluidized coal combustion

    Science.gov (United States)

    Moynihan, P. I.; Young, D. L.

    1979-01-01

    Fluidized-bed coal combustion process, in which pulverized coal and limestone are burned in presence of forced air, may lead to efficient, reliable boilers with low sulfur dioxide and nitrogen dioxide emissions.

  5. Modelling diesel combustion

    CERN Document Server

    Lakshminarayanan, P A; Shi, Yu; Reitz, Rolf D

    2010-01-01

    The underlying principles of combustion phenomena are presented here, providing the basis for quantitative evaluation. These phenomena - ignition delay, fuel air mixing, rate of release, etc. - are then modelled for greater understanding and applicability.

  6. TENORM: Coal Combustion Residuals

    Science.gov (United States)

    Burning coal in boilers to create steam for power generation and industrial applications produces a number of combustion residuals. Naturally radioactive materials that were in the coal mostly end up in fly ash, bottom ash and boiler slag.

  7. Archive of Side Scan Sonar and Swath Bathymetry Data collected during USGS Cruise 10CCT02 Offshore of Petit Bois Island Including Petit Bois Pass, Gulf Islands National Seashore, Mississippi, March 2010

    Science.gov (United States)

    Pfeiffer, William R.; Flocks, James G.; DeWitt, Nancy T.; Forde, Arnell S.; Kelso, Kyle; Thompson, Phillip R.; Wiese, Dana S.

    2011-01-01

    In March of 2010, the U.S. Geological Survey (USGS) conducted geophysical surveys offshore of Petit Bois Island, Mississippi, and Dauphin Island, Alabama (fig. 1). These efforts were part of the USGS Gulf of Mexico Science Coordination partnership with the U.S. Army Corps of Engineers (USACE) to assist the Mississippi Coastal Improvements Program (MsCIP) and the Northern Gulf of Mexico (NGOM) Ecosystem Change and Hazards Susceptibility Project by mapping the shallow geologic stratigraphic framework of the Mississippi Barrier Island Complex. These geophysical surveys will provide the data necessary for scientists to define, interpret, and provide baseline bathymetry and seafloor habitat for this area and to aid scientists in predicting future geomorphological changes of the islands with respect to climate change, storm impact, and sea-level rise. Furthermore, these data will provide information for barrier island restoration, particularly in Camille Cut, and protection for the historical Fort Massachusetts on Ship Island, Mississippi. For more information please refer to http://ngom.usgs.gov/gomsc/mscip/index.html. This report serves as an archive of the processed swath bathymetry and side scan sonar data (SSS). Data products herein include gridded and interpolated surfaces, seabed backscatter images, and ASCII x,y,z data products for both swath bathymetry and side scan sonar imagery. Additional files include trackline maps, navigation files, GIS files, Field Activity Collection System (FACS) logs, and formal FGDC metadata. Scanned images of the handwritten and digital FACS logs are also provided as PDF files. Refer to the Acronyms page for expansion of acronyms and abbreviations used in this report.

  8. Scramjet Combustion Processes

    Science.gov (United States)

    2010-09-01

    plan for these flights is as follows: Scramjet Combustion Processes RTO-EN-AVT-185 11 - 21 HyShot 5 – A Free-Flying Hypersonic Glider HyShot...5 will be a hypersonic glider designed to fly at Mach 8. It will separate from its rocket booster in space and perform controlled manoeuvres as it...RTO-EN-AVT-185 11 - 1 Scramjet Combustion Processes Michael Smart and Ray Stalker Centre for Hypersonics The University of Queensland

  9. Macapat dan Santiswara

    OpenAIRE

    Darusuprapta, Darusuprapta

    2013-01-01

    Dalam khazanah kebudayaan Indonesia, khusus Jawa, hidup berkembangan kesenian macapat yang disebut juga  macapatan, dan kesenian santiswara yang disebut pula santiswaran. Macapatan lebih mengutamakan pembacaan teks dengan dendangan tembang kemudian diikuti sarasehan atau diskusi yang membahas segala segi isi teks bacaannya, sedangkan santiswaran lebih mengutamakan alunan swara dengan dendangan tembang disertai iringan bunyi tabuh-tabuhan.

  10. DANS LE CONTEXTE IVOIRIEN

    African Journals Online (AJOL)

    LA RELATION "GENRE" ET SES IMPLICATIONS SOCIOLOGIQUES. DANS LE CONTEXTE IVOIRIEN ... de base et de la gestion des affaires publiques en milieu rural .... Les raisons économiques; du fait du faible pouvoir d'achat des parents face au ..... cause de rupture du contrat, toute femme a le droit de suspendre son.

  11. Akromegali Dan Gigantisme

    OpenAIRE

    Silvani, Melati; Pase, M. Aron; Syafril, Santi; Lindarto, Dharma; Solin, Steffie S

    2016-01-01

    Hormon pertumbuhan manusia (Growth Hormone/GH) merupakan peptida rantai tunggal yang terdiri dari 191 asam amino, yang diisolasi dari sel somatotrop pada kelenjar hipofisis anterior pada tahun 1956, dan pertama kali digunakan sebagai terapi untuk penatalaksanaan dwarfisme hipofisis pada tahun 1958. Dwarfisme hipofisis adalah bentuk klasik dari defisiensi hormon pertumbuhan pada anak-anak Melati Silvani

  12. Sandia Combustion Research Program

    Energy Technology Data Exchange (ETDEWEB)

    Johnston, S.C.; Palmer, R.E.; Montana, C.A. (eds.)

    1988-01-01

    During the late 1970s, in response to a national energy crisis, Sandia proposed to the US Department of Energy (DOE) a new, ambitious program in combustion research. Shortly thereafter, the Combustion Research Facility (CRF) was established at Sandia's Livermore location. Designated a ''user facility,'' the charter of the CRF was to develop and maintain special-purpose resources to support a nationwide initiative-involving US inventories, industry, and national laboratories--to improve our understanding and control of combustion. This report includes descriptions several research projects which have been simulated by working groups and involve the on-site participation of industry scientists. DOE's Industry Technology Fellowship program, supported through the Office of Energy Research, has been instrumental in the success of some of these joint efforts. The remainder of this report presents results of calendar year 1988, separated thematically into eleven categories. Referred journal articles appearing in print during 1988 and selected other publications are included at the end of Section 11. Our traditional'' research activities--combustion chemistry, reacting flows, diagnostics, engine and coal combustion--have been supplemented by a new effort aimed at understanding combustion-related issues in the management of toxic and hazardous materials.

  13. METC Combustion Research Facility

    Energy Technology Data Exchange (ETDEWEB)

    Halow, J.S.; Maloney, D.J.; Richards, G.A.

    1993-11-01

    The objective of the Morgantown Energy Technology Center (METC) high pressure combustion facility is to provide a mid-scale facility for combustion and cleanup research to support DOE`s advanced gas turbine, pressurized, fluidized-bed combustion, and hot gas cleanup programs. The facility is intended to fill a gap between lab scale facilities typical of universities and large scale combustion/turbine test facilities typical of turbine manufacturers. The facility is now available to industry and university partners through cooperative programs with METC. High pressure combustion research is also important to other DOE programs. Integrated gasification combined cycle (IGCC) systems and second-generation, pressurized, fluidized-bed combustion (PFBC) systems use gas turbines/electric generators as primary power generators. The turbine combustors play an important role in achieving high efficiency and low emissions in these novel systems. These systems use a coal-derived fuel gas as fuel for the turbine combustor. The METC facility is designed to support coal fuel gas-fired combustors as well as the natural gas fired combustor used in the advanced turbine program.

  14. Les méthodes thermiques de production des hydrocarbures. Chapitre 5 : Combustion "in situ". Pricipes et études de laboratoire Thermal Methods of Hydrocarbon Production. Chapter 5 : "In Situ" Combustion. Principles and Laboratory Research

    Directory of Open Access Journals (Sweden)

    Burger J.

    2006-11-01

    Full Text Available II existe plusieurs variantes de la combustion in situ, suivant le sens de déplacement du front de combustion, à co-courant ou à contre-courant, et suivant la nature des fluides injectés, air seul ou injection combinée d'air et d'eau. Les réactions de pyrolyse, d'oxydation et de combustion mises en jeu par ces techniques sont discutées, en particulier la cinétique des principaux mécanismes réactionnels, l'importance du dépôt de coke et l'exothermicité des réactions d'oxydation et de combustion. Les résultats d'essais de déplacement unidirectionnel du front de combustion dans des cellules de laboratoire sont présentés et discutés. Enfin on indique les conditions pratiques d'application des méthodes de combustion in situ sur champ. Possible variations of in situ combustion technique ore as follows : forward or reverse combustion depending on the relative directions of the air flow and the combustion front, dry combustion if air is the only fluid injected into the oil-bearing formation, or fixe/woter flooding if water is injected along with air. The chemical reactions of pyrolysis, oxidation and combustion involved in these processes are described. The kinetics of these reactions is discussed as well as fuel availability in forward combustion and the exothermicity of the oxidation and combustion reactions. The results obtained in the laboratory when a combustion front propagates in unidirectional adiabatic tells are described and discussed. This type of experimentation provides extensive information on the characteristics of the processes. Screening criteria for the practical application of in situ combustion techniques are presented.

  15. Effect of CO Combustion Promoters on Combustion Air Partition in FCC under Nearly Complete Combustion

    Institute of Scientific and Technical Information of China (English)

    王锐; 罗雄麟; 许锋

    2014-01-01

    With CO combustion promoters, the role of combustion air flow rate for concerns of economics and control is important. The combustion air is conceptually divided to three parts:the air consumed by coke burning, the air consumed by CO combustion and the air unreacted. A mathematical model of a fluid catalytic cracking (FCC) unit, which includes a quantitative correlation of CO heterogeneous combustion and the amount of CO combustion promoters, is introduced to investigate the effects of promoters on the three parts of combustion air. The results show that the air consumed by coke burning is almost linear to combustion air flow rate, while the air consumed by CO combustion promoters tends to saturate as combustion air flow rate increases, indicating that higher air flow rate can only be used as a manipulated variable to control the oxygen content for an economic concern.

  16. Ocorrência de infecção Cryptosporidium spp. em peixe-boi marinho (Trichechus manatus Occurrence of Cryptosporidium spp. infection in antillean manatee (Trichechus manatus

    Directory of Open Access Journals (Sweden)

    João Carlos Gomes Borges

    2009-03-01

    Full Text Available A criptosporidiose constitui-se como uma zoonose que pode afetar o homem e uma ampla variedade de animais domésticos e silvestres, principalmente indivíduos imunodeficientes. O objetivo desse trabalho foi registrar a ocorrência de infecção por Cryptosporidium em peixe-boi marinho. Após ser constatada a mudança de comportamento de um peixe-boi marinho mantido nos oceanários do Centro Mamíferos Aquáticos, ICMBio - FMA, animal foi submetido à exame clínico e, posteriormente, à coleta de amostra fecal. As amostras fecais foram analisadas pela técnica de Kinyoun, teste de imunofluorescência direta e pelo corante 4'.6'-Diamidino-2-Phenilindole (DAPI. No exame clínico, o animal apresentou sinais de desconforto abdominal. Os resultados obtidos nas análises de microscopia de luz e fluorescente revelaram a presença de oocistos de Cryptosporidium nas fezes desse peixe-boi.Cryptosporidiosis is a zoonosis which can affect man and a wide range of domestic and wild animals, mainly immunodeficient individuals. The objective of this paper was reported the occurrence of a Cryptosporidium infection in Antillean manatee. After an unusual behavior of an Antillean manatee kept in captivity at the Centro Mamíferos Aquáticos, ICMBio - FMA, clinical examination and posterior fecal sampling was performed. Fecal samples were examined by the Kinyoun technique, Direct Immunofluorescence Test and also examined by 4'.6'-Diamidino-2-Phenylindole (DAPI staining. At the clinical examination, the animal showed signs of abdominal pain. The results obtained by light and fluorescence microscopy analysis showed the presence of Cryptosporidium spp. oocyst in feces of this manatee.

  17. Conversa de bois: uma fábula de João Guimarães Rosa

    Directory of Open Access Journals (Sweden)

    Alexandre Veloso de Abreu

    2015-11-01

    Full Text Available Este artigo apresenta o conto “Conversa de Bois” de João Guimaraes Rosa em uma perspectiva fabular. O conceito de fábula abarca um grande espectro de significações, que vai desde: resumo, intriga, conjunto, construção, até o conceito mais formalista, que lhe dá um sentido mais material.  No entanto, imprimiu-se no gênero como característica principal, o cumprimento de uma ação e o uso do antropomorfismo (quando animais assumem características humanas. Na verdade, essa característica é que define o gênero fábula, pois as personagens principais são animais.  O termo fábula vem do latim, fari, que significa falar ou do grego, phao,significando contar algo.  A narrativa tem uma natureza simbólica e/ou alegórica, retratando uma situação vivida por animais, remetendo-se à situação humana, com o objetivo de transmitir certa moralidade.  Lembrando a estrutura proppiana entende-se que ao explorar a fábula, o autor mineiro recusa o estado efêmero do fazer literário, entendendo-o como constante e cíclico, um eterno exercício de reconhecimento. Não há como encerrar algo essencialmente inclinado a se perpetuar.  A obra literária se emancipa de seu tempo, contexto e espaço, seguindo como expressão autônoma que é. A conversa é de bois e os ouvintes são os humanos.  A literatura e o sertão são do mundo.

  18. Espetáculos e performances culturais no turismo: reflexões sobre o bumba-meu-boi em São Luis, Maranhão (Brasil

    Directory of Open Access Journals (Sweden)

    Karoliny Diniz Carvalho

    2012-01-01

    Full Text Available This article examines the process of revitalization of cultures from the development of cultural tourism. Where the object of study, the Bumba-meu-boi in São Luis, Maranhao, discusses the major changes brought about in this play from its incorporation into the circuit of cultural production and consumption. Based on studies of performance and restoration of behavior, it is understood that the cultural events, like the Valley Celebrate event, consist of renovations on the identities of othercontexts and social spaces, and incorporating in this new meanings.

  19. Aperçu sur la composition phytochimique et les activités biologiques de Retama monosperma L Bois. (Fabacée

    Directory of Open Access Journals (Sweden)

    BELMOKHTAR Zoubir

    2016-06-01

    Full Text Available An overeview on phytochemical composition and biological activities of Retama monosperma L Bois. (Fabaceae The phytochemical study of Retama monosperma is little discussed in Algeria. This article is a summary of the data and scientific articles published on these phytochemicals properties. In traditional herbal medicine, this species is considered toxic in high doses, but in small doses, it is used as an emetic, purgative, vermifuge, vulnerary, sedative, anthelmintic and antiseptic Alkaloids, flavonoids and terpene compounds are the main phytochemicals known in Retama monosperma. In the last five years, several scientific studies have been published to explain the activity of the extracts of this species, particularly anti - inflammatory, anticancer and antioxidant.

  20. U.S. Army Chemical Corps Historical Studies, Gas Warfare in World War I: The 89th Division in the Bois de Bantheville, October 1918

    Science.gov (United States)

    1960-06-01

    move up between Eclisfontaine and Epinonville, in support of Haanfs 32nd Division. The 32nd had taken Cierges and Gesnes and was then getting set...24 - 25 Oct (89th Div Box 12, 20.7), said 51 Americans and 20 Germans were buried weit of Gesnes where they fell and 7 Americans and 2 Germans in the...Get (GFB 164, fol II, pp» 59 - 61). 42 DOR 70, 89th Div, 19-20 Oct (89th Div Box 19, 33.1)* - 23 - heights of Bois de Gesnes - Cote Dame Marie

  1. Kombinasi Boraks dan Asam Borat sebagai Bahan Penghambat Api dan Antirayap Pada Kayu Meranti Merah

    Directory of Open Access Journals (Sweden)

    Mahdi Santoso

    2015-01-01

    Full Text Available Kayu mempunyai sifat yang mudah terbakar dan sebagian besar mempunyai keawetan alami yang rendah. Perbaikan kualitas kayu dilakukan untuk mengatasi kelemahan tersebut, salah satunya dengan mengimpregnasikan bahan kimia yang bersifat menghambat api dan beracun terhadap organisme perusak kayu. Tujuan penelitian ini adalah melihat kemampuan boraks:asam borat (1:1 untuk meningkatkan ketahanan kayu meranti merah terhadap api dan rayap kayu kering dan mengetahui proses pengawetan yang efektif. Penelitian ini menggunakan kayu meranti merah (Shorea spp berukuran 6 x 15 x 500 cm. Waktu pengawetan adalah 1, 2, dan 3 jam serta konsentrasi bahan pengawet 7% dalam 5 ulangan. Metode pengawetan menggunakan metode sel kosong dengan tekanan 12 kg/cm2 . Pengujian ketahanan terhadap api mengacu pada ASTM E 69-02 prosedur B, pengujian ketahanan terhadap rayap kayu kering mengacu pada metode rayap makan tanpa pilihan. Parameter yang diamati ialah absorpsi, retensi aktual, intensitas bakar, suhu pembakaran maksimal, lama pembaraan, mortalitas rayap kayu kering, pengurangan berat contoh uji, derajat kerusakan dan kondisi fisik sampel setelah uji bakar. Hasil penelitian menunjukkan bahwa kombinasi boraks:asam borat (1:1 memiliki efektivitas yang tinggi untuk meningkatkan ketahanan kayu meranti merah terhadap api dan rayap kayu kering. Proses pengawetan yang paling efektif adalah lama penekanan 2 jam dengan absorpsi 331 kg/m3 ; retensi aktual 28,8 kg/m3 ; intensitas bakar 10,9%; suhu pembakaran maksimal 140ºC; lama pembaraan 1,03 menit; mortalitas rayap kayu kering 100%; pengurangan berat contoh uji 0,002%; serta derajat kerusakan kategori ringan. Katakunci: penghambat api, anti rayap, boraks, Shorea spp, Cryptotermes cynocephalus   Borax and Boric Acid Combination As Fire Retardant and Anti-termite Agents on Red Meranti Wood Abstract Woods have properties which are easy to be ignited by fire and most of them have a low natural durability. Therefore, it is required to

  2. Internal combustion engine

    Energy Technology Data Exchange (ETDEWEB)

    Williams, G.J.

    1986-06-03

    A variable power internal combustion engine is described which consists of: a separate air compressor for receiving and compressing a flow of air to a given pressure, the compressor having an inlet valve introducing a flow of air into the compressor and an outlet valve for exhausting compressed air out of the compressor into a compressed air storage means, at least one expander having a cylinder, a cylinder head closing an end of the cylinder, a piston reciprocally mounted in the cylinder for movement away from the cylinder head in a power stroke from an initial position defining a combustion chamber within the cylinder between the cylinder head and the piston, the compressed air storage means receiving the pressurized flow of air from the compressor and being of a volume adequate to provide compressed air in the combustion chamber essentially at the given pressure essentially over the power output of the engine, means for introducing an amount of combustible fuel in the compressed charge to be present with compressed air in the combustion chamber and providing combustion of the amount of fuel in the cylinder with the inlet and exhaust valves closed, cam shaft means in contact with the piston for absorbing and storing the energy of the power stroke of the piston and controlling movement of the piston within the cylinder during the exhaust stroke; the means for varying the volume of the combustion chamber being controlled in accordance with power requirements to provide variable power output and improved efficiency of the engine at power outputs reduced relative to a given design power output of the engine by providing a variable expansion ratio of a minimum of at least about 30 to 1 at the given design power output and higher with reduced power output.

  3. ISLAM DAN RADIKALISME: Upaya Antisipasi dan Penanggulangannya

    Directory of Open Access Journals (Sweden)

    Idrus Ruslan

    2017-02-01

    Full Text Available Sejak tragedi pemboman WTC tanggal 11 September 2001 yang disusul dengan rangkaian peledakan bom di sejumlah negara, banyak orang non Muslim yang berasumsi bahwa ajaran Islam identik dengan radikalisme. Walaupun assumsi yang berkembang itu dapat dimaklumi, namun keyakinan tersebut tentu saja tidak sepenuhnya benar. Karena meskipun terdapat sekelompok orang Islam yang berbuat radikal, akan tetapi mayoritas Muslim justru bertentangan dengan mereka. Lagi pula, jika dicermati secara mendalam, sesungguhnya Islam sama sekali tidak mentolerir tindakan radikal. Ia adalah agama kasih sayang yang sangat mendodrong penganutnya untuk berbuat baik terhadap orang lain, termasuk kepada orang-orang non-Muslim. Artikel ini menawarkan beberapa upaya strategis dalam mengantisipasi dan menanggulangi bahaya radikalisme-terorisme.

  4. BAHAYA RADIASI DAN CARA PROTEKSINYA

    Directory of Open Access Journals (Sweden)

    Badunggawa P

    2014-09-01

    Full Text Available Radiasi yang kita terima setiap saat, termasuk radiasi untuk tujuan kedokteran, mempunyai dampak positif dan negatif terhadap keselamatan manusia dan lingkungan. Dampak positif dari radiasi terhadap keselamatan manusia diantaranya adalah digunakan sebagai pengobatan dan dampak negatifnya adalah tergantung dari besar dosis yang diterima diantaranya adalah mulai dari mual, muntah, pusing-pusing, rambut rontok, menyebabkan kanker, diturunkan secara genetik, dan yang lebih berbahaya lagi adalah menyebabkan kematian. Oleh karena itu kita harus berhati-hati terhadap bahaya yang ditimbulkannya, baik terhadap pekerja radiasi maupun masyarakat umum termasuk pasien. Perlindungan terhadap bahaya yang ditimbulkan radiasi ini dikenal dengan istilah proteksi radiasi. Sehingga dosis yang diterima pertahun oleh pekerja atau masyarakat umum tidak melebihi batas dosis yang ditetapkan oleh Bapeten. Berbagai upaya telah dilakukan untuk meminimalkan bahaya tersebut sehingga pekerja dan pasien merasa aman melakukan dan dikenai tindakan medik.[medicina 2009;40:47-51].  

  5. Combustible structural composites and methods of forming combustible structural composites

    Science.gov (United States)

    Daniels, Michael A.; Heaps, Ronald J.; Steffler, Eric D; Swank, William D.

    2011-08-30

    Combustible structural composites and methods of forming same are disclosed. In an embodiment, a combustible structural composite includes combustible material comprising a fuel metal and a metal oxide. The fuel metal is present in the combustible material at a weight ratio from 1:9 to 1:1 of the fuel metal to the metal oxide. The fuel metal and the metal oxide are capable of exothermically reacting upon application of energy at or above a threshold value to support self-sustaining combustion of the combustible material within the combustible structural composite. Structural-reinforcing fibers are present in the composite at a weight ratio from 1:20 to 10:1 of the structural-reinforcing fibers to the combustible material. Other embodiments and aspects are disclosed.

  6. Sifat Anatomi dan Fisis Kelapa Hibrida

    OpenAIRE

    Hutabarat, Marihot Hamonangan

    2010-01-01

    Penelitian ini bertujuan untuk mengevaluasi sifat anatomis dan fisis batang kelapa hibrida. Ciri anatomi diamati langsung pada sampel dan menggunakan mikroskop untuk pengamatan dimensi seratnya, dan pengujian sifat fisis menggunakan British Standard. Sifat anatomis dan fisis batang kelapa hibrida bervariasi menurut ketinggian dan kedalaman. Struktur anatomis batang kelapa hibrida didominasi oleh vascular bundle dan parenkim. Serat kayu dapat ditemukan didalam vascular bundle dengan rata-r...

  7. Nilai Dan Fungsi Ndungndungen Karo

    OpenAIRE

    Rosita Ginting

    2010-01-01

    Tesis ini berjudul “Nilai dan Fungsi Ndungndungen Karo”. Tesis ini menjabarkan tentang macam-macam Ndungndungen Karo, nilai-nilai yang terkandung dalam Ndungndungen Karo, fungsi Ndungndungen Karo, dan bagaimana penggunaan Ndungndungen Karo pada saat sekarang ini. Metode yang dipakai dalam penelitian ini adalah metode deskriptif kualitatif, dengan teknik rekaman dan interviu. Metode kepustakaan juga digunakan dalam penelitian ini karena data sekunder dari penelitian ini adalah data-data ya...

  8. Combustion and regulation; Combustion et reglementation

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-12-31

    This conference was organized after the publication of the French by-law no 2010 relative to combustion installations and to the abatement of atmospheric pollution. Five topics were discussed during the conference: the new regulations, their content, innovations and modalities of application; the means of energy suppliers to face the new provisions and their schedule; the manufacturers proposals for existing installations and the new equipments; the administration control; and the impact of the new measures on exploitation and engineering. Twenty papers and 2 journal articles are reported in these proceedings. (J.S.)

  9. Kloning Dan Rekayasa Reproduksi

    Directory of Open Access Journals (Sweden)

    Sulchan Sofoewan

    1997-06-01

    Full Text Available REKAYASA reproduksi yang disebut Assisted Reproductive Techniques (ART atau tehnik tehnik reproduksi dengan tanpa melakukan senggama tetapi dengan bantuan secara medik, atau setiap manipulasi terhadap bagian prekreatif (reproduksi siklus kehidupan. Rekayasa reproduksi, rekayasa genetik dan kloning embrio cenderung untuk saling menunjang (sinergetik. Rekayasa genetik dan klonasi sel embrional dari hasil fertilisasi tadi dapat dilibatkan pada ART sebelum embrio ditransfer kedalam rahim. Untuk pasangan yang suaminya belum memenuhi syarat untuk fertilisasi in vitro karena jumlah spermatozoanya kurang ditempuh dengan cara menyuntikkan spermatozoa langsung kedalam ovum/oosit dengan cara mikro manipulasi/mikro injeksi yang dikenal dengan istilah lCZI (Intracytoplasmic Sperm Injection atau SUZI (Subzonal Sperm Insemination.

  10. En kamp om dans

    DEFF Research Database (Denmark)

    Zachariassen, Annette

    2004-01-01

    Hvordan er det muligt at medtænke et legende og "kæmpende" element i det faglige indholdsområde musik, bevægelse og kropsudtryk/dans? og hvordan er det muligt at lade sig inspirere af elementer fra genren elektric boogie-battel og brasiliansk kampdans "Capoeira" i tilrettelæggelse af et undervisn......Hvordan er det muligt at medtænke et legende og "kæmpende" element i det faglige indholdsområde musik, bevægelse og kropsudtryk/dans? og hvordan er det muligt at lade sig inspirere af elementer fra genren elektric boogie-battel og brasiliansk kampdans "Capoeira" i tilrettelæggelse af et...

  11. Perancangan dan Implementasi Modul Praktikum

    Directory of Open Access Journals (Sweden)

    Gita Indah Hapsari

    2015-05-01

    Full Text Available Kemajuan teknologi berbasis komputer berkembang dengan sangat pesat. Seiring dengan perkembangan jaman, kemajuan  tersebut memberikan pengaruh  terhadap  perubahan cara penyampaian pengajaran yang mengarah pada penggunaan jenis media penyampaian. Praktikum merupakan salah satu bentuk pengajaran yang memberikan pengalaman belajar secara nyata terhadap kondisi sebenarnya di lapangan mengenai penggunaan dan implementasi alat praktek yang berhubungan dengan berbagai materi yang dipelajari oleh mahasiswa dan memiliki tujuan untuk memberikan keterampilan dan pengenalan terhadap mahasiswa/peserta didik. Penelitian ini melakukan implementasi teknologi augmented reality terhadap salah satu modul praktikum yaitu pengenalan tata letak hardware dan Port I/O pada motherboard dan bertujuan sebagai alat bantu penyampaian pengajaran praktikum. Pengimplementasian teknologi augmented reality melibatkan aksi oleh user terhadap media penangkapan gambar motherboard menggunakan web camera dan tampilan pemetaan tata letak hardware dan port i/o pada motherboard. Penelitian telah diimplementasikan dan diujicoba terhadap 3 kelas dengan 97 responder. Adapun hasil dari penelitiannya adalah 83% responder menyukai aplikasi, 77% memahami materi, 84,5% menginginkan aplikasi ini menjadi alat bantu ajar, 65,98% meminta materi untuk dilengkapi dan diperbanyak, 77,3% dapat belajar mandiri menggunakan aplikasi ini, tanpa bantuan dari dosen ataupun asisten.

  12. NYERI KEPALA DAN GANGGUAN TIDUR

    Directory of Open Access Journals (Sweden)

    Lina Kamelia

    2014-09-01

    Full Text Available Nyeri kepala dan tidur merupakan dua fenomena yang saling mempengaruhi dengan patomekanisme yang kompleks. Nyeri kepala primer, terutama migren, nyeri kepala klaster dan hypnic headache dapat timbul karena pengurangan waktu tidur, parasomnia, maupun gangguan pada regulasi arsitektur tidur terutama fase rapid eye movement. Sebaliknya, adanya nyeri kepala memicu timbulnya berbagai macam gangguan tidur. Studi pencitraan otak dan biokimia menunjukkan peranan penting melatonin dan nukleus suprachiasmatik   yang mengalami disfungsi pada penderita nyeri kepala yang berhubungan dengan gangguan tidur. [MEDICINA 2013;44:101-104].

  13. SEKS DAN BUGAR

    Directory of Open Access Journals (Sweden)

    Ira Paramastri

    2016-10-01

    Full Text Available Barilah, seorang eksekutif perempuan datang ke klinik psikologi dengan keluhan "malas bahkan tidak terangsang tatkala suaminya mengajak bermain seks", atau keluhan Edo, seorang menejer muda "saya jengkel dengan diri saya sendiri karena saya tidak dapat ereksi dengan keras", atau keluhan pasangan muda wanita karir dan pengusaha Retno-Rubi "saat atau serampung hubungan seksual selalu dibarengi rasa nyeri/sakit, sungguh menyebalkan".

  14. Emil du Bois-Reymond--the father of experimental electrophysiology%杜波依斯-雷蒙德——实验电生理学之父

    Institute of Scientific and Technical Information of China (English)

    张铭

    2013-01-01

    In Nineteenth century, German physiologist Emil du Bois-Reymond is the discoverer of action potential and rest potential by experimental works on frog neuromuscular specimens. He put forward a new theory- pre-existence theory. By studies for decades of Emil du Bois-Reymond and his students, a new era of bioelectrical exploration come. He has been known as the father of experimental electrophysiology.%德国生理学家埃米尔·杜波依斯-雷蒙德在19世纪中叶以青蛙神经肌肉标本为主要研究对象,首先发现和描述了静息电位和动作电位,提出了"先存学说".在他和他的学生数十年的努力下,人类对生物电的探索和认识进入了一个新的时代.

  15. ASIMETRI INFORMASI DAN UNDERPRICING

    Directory of Open Access Journals (Sweden)

    Tety Anggita Safitri

    2013-03-01

    Full Text Available Tujuan penelitian ini adalah untuk menguji pengaruh asimetri informasi terhadap underpricing. Penelitian ini menggunakan sampel 63 perusahaan yang melakukan penawaran umum perdana di Bursa Efek Indonesia dalam kurun waktu 2005-2010. Analisis data menggunakan regresi linier berganda, yaitu menguji proksi asimetri informasi yang terdiri atas ukuran perusahaan, umur perusahaan, proporsi saham yang ditawarkan kepada masyarakat, reputasi underwriter dan reputasi auditor terhadap underpricing. Hasil penelitian ini mengindikasikan bahwa reputasi underwriter dan reputasi auditor berpengaruh terhadap underpricing. Ukuran perusahaan, umur perusahaan dan proporsi saham yang ditawarkan tidak berpengaruh terhadap underpricing.The aim of this research is to examine the effect of assymetric information on underpricing. This research used a sample of 63 companies that make initial public offering on the Indonesia Stock Exchange in the period of 2005-2010. The data analysis is using multiple linear regression, which is testing the proxy of asymmetric information which consists of the firm size, the firm age, the proportion of shares offered to the public, underwriter reputation and auditor reputation on underpricing. This research indicates that underwriter reputation and auditor reputation have a significant effect on underpricing. The firm size, the firm age and the proportion of shares offered to the public have no significant effect on underpricing.

  16. ASIMETRI INFORMASI DAN UNDERPRICING

    Directory of Open Access Journals (Sweden)

    Tety Anggita Safitri

    2013-03-01

    Full Text Available Tujuan penelitian ini adalah untuk menguji pengaruh asimetri informasi terhadap underpricing. Penelitian ini menggunakan sampel 63 perusahaan yang melakukan penawaran umum perdana di Bursa Efek Indonesia dalam kurun waktu 2005-2010. Analisis data menggunakan regresi linier berganda, yaitu menguji proksi asimetri informasi yang terdiri atas ukuran perusahaan, umur perusahaan, proporsi saham yang ditawarkan kepada masyarakat, reputasi underwriter dan reputasi auditor terhadap underpricing. Hasil penelitian ini mengindikasikan bahwa reputasi underwriter dan reputasi auditor berpengaruh terhadap underpricing. Ukuran perusahaan, umur perusahaan dan proporsi saham yang ditawarkan tidak berpengaruh terhadap underpricing.The aim of this research is to examine the effect of assymetric information on underpricing. This research used a sample of 63 companies that make initial public offering on the Indonesia Stock Exchange in the period of 2005-2010. The data analysis is using multiple linear regression, which is testing the proxy of asymmetric information which consists of the firm size, the firm age, the proportion of shares offered to the public, underwriter reputation and auditor reputation on underpricing. This research indicates that underwriter reputation and auditor reputation have a significant effect on underpricing. The firm size, the firm age and the proportion of shares offered to the public have no significant effect on underpricing.

  17. Studies in combustion dynamics

    Energy Technology Data Exchange (ETDEWEB)

    Koszykowski, M.L. [Sandia National Laboratories, Livermore, CA (United States)

    1993-12-01

    The goal of this program is to develop a fundamental understanding and a quantitative predictive capability in combustion modeling. A large part of the understanding of the chemistry of combustion processes comes from {open_quotes}chemical kinetic modeling.{close_quotes} However, successful modeling is not an isolated activity. It necessarily involves the integration of methods and results from several diverse disciplines and activities including theoretical chemistry, elementary reaction kinetics, fluid mechanics and computational science. Recently the authors have developed and utilized new tools for parallel processing to implement the first numerical model of a turbulent diffusion flame including a {open_quotes}full{close_quotes} chemical mechanism.

  18. Alcohol combustion chemistry

    KAUST Repository

    Sarathy, Mani

    2014-10-01

    Alternative transportation fuels, preferably from renewable sources, include alcohols with up to five or even more carbon atoms. They are considered promising because they can be derived from biological matter via established and new processes. In addition, many of their physical-chemical properties are compatible with the requirements of modern engines, which make them attractive either as replacements for fossil fuels or as fuel additives. Indeed, alcohol fuels have been used since the early years of automobile production, particularly in Brazil, where ethanol has a long history of use as an automobile fuel. Recently, increasing attention has been paid to the use of non-petroleum-based fuels made from biological sources, including alcohols (predominantly ethanol), as important liquid biofuels. Today, the ethanol fuel that is offered in the market is mainly made from sugar cane or corn. Its production as a first-generation biofuel, especially in North America, has been associated with publicly discussed drawbacks, such as reduction in the food supply, need for fertilization, extensive water usage, and other ecological concerns. More environmentally friendly processes are being considered to produce alcohols from inedible plants or plant parts on wasteland. While biofuel production and its use (especially ethanol and biodiesel) in internal combustion engines have been the focus of several recent reviews, a dedicated overview and summary of research on alcohol combustion chemistry is still lacking. Besides ethanol, many linear and branched members of the alcohol family, from methanol to hexanols, have been studied, with a particular emphasis on butanols. These fuels and their combustion properties, including their ignition, flame propagation, and extinction characteristics, their pyrolysis and oxidation reactions, and their potential to produce pollutant emissions have been intensively investigated in dedicated experiments on the laboratory and the engine scale

  19. Radiative Augmented Combustion.

    Science.gov (United States)

    1985-08-12

    86-0085 In 00I to RADIATIVE AUGMENTED COMBUSTION MOSHE LAVID M.L. ENERGIA , INC. P.O. BOX 1468 1 PRINCETON, NEW JERSEY 08542 AUGUST 1985 *.. plo...Combustion conducted at M.L. ENERGIA . It is funded by the Air Force Office of Scientific Research under Contract No. F49620-83-C-0133, with Dr. J.M...reported. It covers the second year of the contract, from July 15, 1984 through July 14, 1985. The work was performed at ENERGIA , Princeton, New Jersey

  20. Transition nozzle combustion system

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Won-Wook; McMahan, Kevin Weston; Maldonado, Jaime Javier

    2016-11-29

    The present application provides a combustion system for use with a cooling flow. The combustion system may include a head end, an aft end, a transition nozzle extending from the head end to the aft end, and an impingement sleeve surrounding the transition nozzle. The impingement sleeve may define a first cavity in communication with the head end for a first portion of the cooling flow and a second cavity in communication with the aft end for a second portion of the cooling flow. The transition nozzle may include a number of cooling holes thereon in communication with the second portion of the cooling flow.

  1. Toxicology of Biodiesel Combustion products

    Science.gov (United States)

    1. Introduction The toxicology of combusted biodiesel is an emerging field. Much of the current knowledge about biological responses and health effects stems from studies of exposures to other fuel sources (typically petroleum diesel, gasoline, and wood) incompletely combusted. ...

  2. DIVERSITAS DAN KERAPATAN MANGROVE, GASTROPODA DAN BIVALVIA DI ESTUARI PERANCAK, BALI

    OpenAIRE

    2011-01-01

    Penelitian ini bertujuan membandingkan diversitas dan kerapatan mangrove dengan kepadatan gastropoda dan bivalvia di mangrove alami dan rehabilitasi. Pengukuran ekosistem mangrove menggunakan transek kuadrat 10 m x 10 m. Kelimpahan dan kepadatan gastropoda dan bialvia menggunakan transek kuadrat berukuran 1 m x 1 m. Analisis nMDS, cluster untuk melihat hubungan karekteristik mangrove alami dan rehabilitasi dianalisis secara deskriptif dan analisis regresi untuk mendetermi...

  3. IJTIHAD KONTEMPORER (Problem dan Solusinya

    Directory of Open Access Journals (Sweden)

    Mustaqim Mustaqim

    2011-04-01

    Full Text Available Ijtiha>d adalah merupakan bahasan yang tak henti-hentinya menjadi kajian ketat para ulama sejak dulu sampai kini, seperti imam al-Ghaza>li> membahas dalam bukunya al mustasfa, demikian juga imam assyaukani membahas dalam bukunya irsyadul puhul dan masih banyak lagi ulama yung membahas dalam masalah ijtiha>d ini, Begitu juga dari kalangan ulama kontemporer seperti, Shaykh Ah}mad Ibra>hi>m, Shaykh ‘Abd al-Wahha>b Khala>f, Dr. Yu>suf al-Qarad}awi>, Dr. T{a>ha> Jabi>r dan masih banyak lagi selain mereka. Bersama itu, pintu ijtiha>d tak pernah tertutup, karena kehidupan masih terus berlanjut, dan kejadian-kejadian masih terus berkembang, timbulnya krisis ekonomi dan sosial, rangkaian masalah dan berbagai macam solusinya, desakan kejadian yang tak pernah dipersiapkan oleh manusia yang menimbulkan aneka ragam kesulitan, dan terus mengakar sampai menyelami kehidupan tekhnologi, perdagangan, atau kehidupan individu dan umum. Berawal dari sini maka merupakan cambuk bagi seorang muslim dengan kebebasan berpikirnya untuk mengerahkan segala kemampuannya terhadap seluruh masalah, sebab islam adalah agama kehidupan yang mencakup segala aspek, Islam bukan hanya berurusan dengan masalah akhirat saja, tapi Islam lahir dalam bentuk yang luas, mampu mengobati penyakit sosial, ekonomi, internasional, dll, dan fiqih sendiri bukan hanya merupakan peraturan belaka, melainkan fiqih mencakup segala masalah tergantung kejadian dan kebutuhan, fiqih masih siap menerima perubahan selama masih tetap dalam rel qur’an dan sunnah, dari sinilah perlu adanya ijtiha>d, Ijtiha>d merupakan hal yang terbuka bagi seorang muslim agar merasakan kebebasan berfikir yang sempurna karena ijtiha>d adalah merupakan sebuah bukti akan luas dan mudahnya syariat islam.

  4. The 2008 Charles H. Thompson Lecture-Colloquium Presentation: From Du Bois to Obama--The Education of Peoples of African Descent in the United States in the 21st Century

    Science.gov (United States)

    Lee, Carol D.

    2009-01-01

    This article presents the text of a lecture delivered by American Educational Research Association President Carol D. Lee at the 29th Annual Charles H. Thompson Lecture-Colloquium Series which was held on November 5, 2008. In her lecture, Lee discussed several points of similarities between W. E. B. Du Bois and President Barack Obama. These…

  5. W. E. B. Du Bois's Basic American Negro Creed and the Associates in Negro Folk Education: A Case of Repressive Tolerance in the Censorship of Radical Black Discourse on Adult Education

    Science.gov (United States)

    Guy, Talmadge C.; Brookfield, Stephen

    2009-01-01

    W. E. B. Du Bois, one of the brightest lights in African American history, wrote a sparkling critique of the American social and economic system originally planned as part of the Bronze Booklets series, edited and published by Alain Locke and the Associates in Negro Folk Education. The piece was never published and has, until now, been lost to the…

  6. Experimental combustion an introduction

    CERN Document Server

    Mishra, D P

    2014-01-01

    ""… other books available in this area do not cover the detailed topics covered here. Energy and combustion is a hot issue. It is expected to be even hotter with more demand in this area as we search for cleaner methods of energy conversion from chemical to thermal energy.""-Ashwani K. Gupta, Department of Mechanical Engineering, University of Maryland, College Park, USA

  7. Coal combustion research

    Energy Technology Data Exchange (ETDEWEB)

    Daw, C.S.

    1996-06-01

    This section describes research and development related to coal combustion being performed for the Fossil Energy Program under the direction of the Morgantown Energy Technology Center. The key activity involves the application of chaos theory for the diagnosis and control of fossil energy processes.

  8. Optical Tomography in Combustion

    DEFF Research Database (Denmark)

    Evseev, Vadim

    . JQSRT 113 (2012) 2222, 10.1016/j.jqsrt.2012.07.015] included in the PhD thesis as an attachment. The knowledge and experience gained in the PhD project is the first important step towards introducing the advanced optical tomography methods of combustion diagnostics developed in the project to future...

  9. Combustion Models in Finance

    CERN Document Server

    Tannous, C

    2001-01-01

    Combustion reaction kinetics models are used for the description of a special class of bursty Financial Time Series. The small number of parameters they depend upon enable financial analysts to predict the time as well as the magnitude of the jump of the value of the portfolio. Several Financial Time Series are analysed within this framework and applications are given.

  10. Flameless Combustion Workshop

    Science.gov (United States)

    2005-09-20

    operating hours, to produce low emission levels of NOx, CO and UHC . Gas turbine combustion stability has increasingly become a crucial design issue as...achieved proved: "* Safe and reliable operation ofgas turbine combustors "* Low emissions of NO., CO and UHC These results have clear economically

  11. Combustion calorimetry experimental chemical thermodynamics

    CERN Document Server

    Sunner, Stig

    1979-01-01

    Combustion Calorimetry deals with expertise knowledge concerning the calorimetry of combustion reactions of an element or compound. After defining the use of units and physical constants, the book discusses the basic principles of combustion calorimetry and the various instruments and calorimeters used in the experiments to measure operations concerning temperatures and its time variations. One paper discusses the theory and design criteria of combustion calorimeter calibration. Another paper discusses the results obtained from a combustion calorimeter after it has measured the energy or entha

  12. Modelling of CWS combustion process

    Science.gov (United States)

    Rybenko, I. A.; Ermakova, L. A.

    2016-10-01

    The paper considers the combustion process of coal water slurry (CWS) drops. The physico-chemical process scheme consisting of several independent parallel-sequential stages is offered. This scheme of drops combustion process is proved by the particle size distribution test and research stereomicroscopic analysis of combustion products. The results of mathematical modelling and optimization of stationary regimes of CWS combustion are provided. During modeling the problem of defining possible equilibrium composition of products, which can be obtained as a result of CWS combustion processes at different temperatures, is solved.

  13. Analisis dan Optimasi Desain Sistem Reaktor Gas Temperatur Tinggi RGTT200K dan RGTT200KT

    Directory of Open Access Journals (Sweden)

    Mohammad Dhandhang Purwadi

    2013-03-01

    dengan penyelesaian persamaan aljabar linier dari model RGTT200K dan RGTT200KT. Dari analisis dan optimasi ini dihasilkan desain konseptual sistem RGTT200K dan RGTT200KT dengan spesifikasi thermal-flow teras sama, dan peningkatan EUF dari 63% menjadi 80,14% (untuk RGTT200K dan dari 63,6% menjadi 78,02% (untuk RGTT200KT.

  14. Exfoliative Cheilitis dan Penatalaksanaannya

    Directory of Open Access Journals (Sweden)

    Dewi Agustina

    2012-12-01

    Full Text Available Latar Belakang: Exfoliative cheilitis adalah suatu keadaan inflamatori kronis superfisisal yang ditandai dengan adanya pengelupasan permukaankeratin bibir sedangkan area yang lain terjadi pembentukan lapisan keratin. Tujuan: untuk melaporkan suatu  kasus Exfoliative cheilitis yang diikuti +  selama 2 bulan beserta penatalaksanaanya. Laporan kasus: seorang wanita berusia 52 tahun mengeluh bibir bawahnya pecah-pecah, terasa kering dan panas berdasarkan pemeriksaan subyektif dan klinis, Exfoliative cheilitis ditetapkan sebagai diagnosis kerja. Penatalaksanaanya: Komunikasi-Informasi-Edukasi (KIE diberikan kepada pasien pada awal kunjungan disertai pemberian metil prednisolon, Vitamin B1,6,12 dan anjuran untuk menghentikan kebiasaan menjilat-jilat bibir bawah, menghindari stress dan meningkatkan asupan makanan yang mengandung vitamin A. Pada kunjungna berikutnya pemberian metil prednisolon dihentikan karena terdeteksi adanya peningkatan tekanan darah. Untuk selanjutnya kondisi bibir bawah dievaluasi +  selama 2 bulan. Kesimpulan: Progresitas Exfoliative cheilitis dapat dihentikan dengan bantuan KIE serta menghindari faktor pemicu stress, yang pada akhirnya akan dapat meminimalisir aktivitas factitious berupa menjilat-jilat bibir bawah.    Background: Exfoliative cheilitis is a chronic superficial inflammatory condition that is characterized by regular peeling of a superficial excessive layer of karatin, on the other hand, keratinization is developed in the other area. Aim: to report an Exfoliative cheilitis case monitored for two months and its management. Case Report: a 52 year female has been suffering from fissured lower lip with dry and burning sensations. According to subjective and clinical examinations, Exfoliative cheilitis was determined as the working diagnosis. Management: Communication-Information-Education (CIE were given to the patient at the first visit, besides metyl prednisolon and vitamin B1,6,12 administrations. Patient was

  15. Time Resolved FTIR Analysis of Combustion of Ethanol and Gasoline Combustion in AN Internal Combustion Engine

    Science.gov (United States)

    White, Allen R.; Sakai, Stephen; Devasher, Rebecca B.

    2011-06-01

    In order to pursue In Situ measurements in an internal combustion engine, a MegaTech Mark III transparent spark ignition engine was modified with a sapphire combustion chamber. This modification will allow the transmission of infrared radiation for time-resolved spectroscopic measurements by an infrared spectrometer. By using a Step-scan equipped Fourier transform spectrometer, temporally resolved infrared spectral data were acquired and compared for combustion in the modified Mark III engine. Measurements performed with the FTIR system provide insight into the energy transfer vectors that precede combustion and also provides an in situ measurement of the progress of combustion. Measurements were performed using ethanol and gasoline.

  16. Experimental chemical thermodynamics. Volume I. Combustion calorimetry

    Energy Technology Data Exchange (ETDEWEB)

    Sunner, S.; Mansson, M. (eds.)

    1979-01-01

    This book contains 18 chapters. The information included is: units and physical constants; basic principles of combustion calorimetry; calibration of combustion calorimeters; test and auxiliary substances in combustion calorimetry; strategies in the calculation of standard-state energies of combustion from the experimentally determined quantities; assignments of uncertainties; presentation of combustion calorimetric data in the primary literature; general techniques for combustion of liquid/solid organic compounds by oxygen bomb calorimetry; combustion of liquid/solid organic compounds with non-metallic hetero-atoms; combustion calorimetry of metals and simple metallic compounds; combustion calorimetry of organometallic compounds; combustion in fluorine and other halogens; bomb combustion of gaseous compounds in oxygen; oxygen flame calorimetry; fluorine flame calorimetry; combustion calorimetry as a technological service; trends in combustion calorimetry; and from the history of combustion calorimetry. (DP)

  17. Singkatan Dan Akronim Dalam Chatting Di Internet

    OpenAIRE

    Hervina M. S.

    2010-01-01

    Penelitian ini menganalis pola singkatan dan akronim dalam chatting di internet. Tujuan penelitian ini adalah mendeskripsikan pola singkatan dan akronim dalam chatting di internet dan mendeskripsikan pola singkatan dan akronim yang paling dominan digunakan dalam chatting di internet. Teori yang digunakan adalah singkatan, akronim, bahasa dalam chatting, sosiolinguistik. Pengumpulan data digunakan dengan metode simak, yaitu penyimakan terhadap penggunaan bahasa (Sudaryanto,1993:133), dan tekni...

  18. LINTASAN SEJARAH FILSAFAT PENDIDIKAN PERENIALISME DAN AKTUALISASINYA

    OpenAIRE

    2015-01-01

    Antara filsafat dan pendidikan terdapat kaitan yang erat. Filsafat memiliki aspek-aspek utama yang dapat dijadikan landasan bagi pendidikan. Aspek-aspek yang dimaksud adalah aspek-aspek metafisis, epistemologis, dan aksiologis. Aspek metafisis antara lain berkaitan dengan persoalan realitas yang tercermin pada bahan ajar, pengalaman dan keterampilan. Aspek epistemologis berkaitan dengan persoalan pengetahuan dan kebenaran, termasuk di dalamnya sumber belajar dan metode pembelajaran. Aspek aks...

  19. Aerosols from biomass combustion

    Energy Technology Data Exchange (ETDEWEB)

    Nussbaumer, T.

    2001-07-01

    This report is the proceedings of a seminar on biomass combustion and aerosol production organised jointly by the International Energy Agency's (IEA) Task 32 on bio energy and the Swiss Federal Office of Energy (SFOE). This collection of 16 papers discusses the production of aerosols and fine particles by the burning of biomass and their effects. Expert knowledge on the environmental impact of aerosols, formation mechanisms, measurement technologies, methods of analysis and measures to be taken to reduce such emissions is presented. The seminar, visited by 50 participants from 11 countries, shows, according to the authors, that the reduction of aerosol emissions resulting from biomass combustion will remain a challenge for the future.

  20. PEMBUATAN DAN KARAKTERISASI ARANG DARI BATANG TANAMAN GUMITIR (Tagetes erecta) PADA BERBAGAI SUHU DAN WAKTU PIROLISIS

    National Research Council Canada - National Science Library

    I Made Siaka; Ni Putu Diana Febriyanti; Emmy Sahara; I Made Sutha Negara

    2017-01-01

    ...) pada berbagai suhu dan waktu pirolisis. Penelitian ini dilakukan untuk memperoleh suhu dan waktu yang optimum dalam pembuatan arang serta mengetahui karakteristik arang yang dihasilkan pada suhu dan waktu optimumnya...

  1. RESISTENSI AGAMA DAN BUDAYA MASYARAKAT

    Directory of Open Access Journals (Sweden)

    David Samiyono

    2013-12-01

    Interaksi antar etnis, agama dan budaya bukanlah barang langka di Bali. Sejak semula hal tersebut sudah ada, ketika pulau ini menjadi locus perdagangan hasil bumi. Sebab sesungguhnya kebudayaan Bali menjujung tinggi nilai-nilai keseimbangan dan harmonisasi antar manusia dengan Tuhan (perhyangan, dengan sesama (pawongan dan dengan lingkungan (palemahan. Konsep ini disebut Tri hita karana. Bali kini berubah. Budayanya berorientasi pada jasa, yang berkait dengan industri pariwisata. Sikap orang Bali kini tidak lagi ramah dan harmoni. Akibat ledakan bom dalam bulan Oktober 2002 dan 2005, masyarakat lebih berhati-hati terhadap para pendatang. Ajeg Bali merupakan kearifan lokal –agama dan budaya– masyarakat Bali dalam rangka menanggulangi pengaruh luar yang mengakibatkan perubahan di berbagai bidang sehingga identitas kebalian mengalami degradasi. Ajeg Bali merupakan bentuk resistensi masyar­akat Bali dalam rangka membatasi pendatang dari luar Bali. Kajian ini berusaha untuk menjawab pertanyaan “apakah Ajeg Bali, sebuah kearifan lokal masyarakat Bali dapat membendung pengaruh budaya, agama dan ekonomi masyarakat Bali?”

  2. Combustion science and engineering

    CERN Document Server

    Annamalai, Kalyan

    2006-01-01

    Introduction and Review of Thermodynamics Introduction Combustion Terminology Matter and Its Properties Microscopic Overview of Thermodynamics Conservation of Mass and Energy and the First Law of Thermodynamics The Second Law of Thermodynamics Summary Stoichiometry and Thermochemistry of Reacting Systems Introduction Overall Reactions Gas Analyses Global Conservation Equations for Reacting Systems Thermochemistry Summary Appendix Reaction Direction and Equilibrium Introduction Reaction Direction and Chemical Equilibrium Chemical Equilibrium Relations Vant Hoff Equation Adi

  3. Combustion Characteristics of Sprays

    Science.gov (United States)

    1989-08-01

    regarded by implication or otherwise, or in any way licensing the holder or any other person or corporation, or conveying any rights or permission to...00 _’N 1. TI TLE inctuat Security CZaaafication5 Combustion Characteristics of Sprays 12. PERSONAL AUTHOR(S) Sohrab, Siavash H. 13& TYPE OF REPORT...to ?!HF of rich butane/air 3unsen flames. .lso, the rotacion speed and :he oerodic temDeracure fluc:uations of rotacfng ?HF are examined. :’!naily

  4. Combustible Cartridge Case Characterization

    Science.gov (United States)

    1984-02-01

    University (NYU) has resulted in the selection of two cross-linked melamine / formaldehyde acrylic styrene resin systems that can be used in the beater additive... melamine resin Akaradit II stabilizer 20. ABSTRACT (con) Test coupons of combustible cartridge case material were fabricated using these recommended...and agitated for 30 min before the pH was slowly lowered to 3 with p-toluene sulfonic acid. In order to maintain this pH in the felting tank, it was

  5. High Gravity (g) Combustion

    Science.gov (United States)

    2006-02-01

    required thrust-to-weight ratio goals. Shorter residence times in the combustion chamber may reduce the NOx emissions, but the CO and UHC emissions then...Emissions analyzing equipment is available to detect CO, CO2, NOx, O2, and total unburned hydrocarbons ( UHC ) at the combustor exit plane. Emissions... UHC ) emissions along with the CO data, as seen in Fig. 24, shows that Configuration 1 had much higher UHC levels. The reactions from hydrocarbons to

  6. Internal combustion engine using premixed combustion of stratified charges

    Science.gov (United States)

    Marriott, Craig D.; Reitz, Rolf D. (Madison, WI

    2003-12-30

    During a combustion cycle, a first stoichiometrically lean fuel charge is injected well prior to top dead center, preferably during the intake stroke. This first fuel charge is substantially mixed with the combustion chamber air during subsequent motion of the piston towards top dead center. A subsequent fuel charge is then injected prior to top dead center to create a stratified, locally richer mixture (but still leaner than stoichiometric) within the combustion chamber. The locally rich region within the combustion chamber has sufficient fuel density to autoignite, and its self-ignition serves to activate ignition for the lean mixture existing within the remainder of the combustion chamber. Because the mixture within the combustion chamber is overall premixed and relatively lean, NO.sub.x and soot production are significantly diminished.

  7. The Diesel Combustion Collaboratory: Combustion Researchers Collaborating over the Internet

    Energy Technology Data Exchange (ETDEWEB)

    C. M. Pancerella; L. A. Rahn; C. Yang

    2000-02-01

    The Diesel Combustion Collaborator (DCC) is a pilot project to develop and deploy collaborative technologies to combustion researchers distributed throughout the DOE national laboratories, academia, and industry. The result is a problem-solving environment for combustion research. Researchers collaborate over the Internet using DCC tools, which include: a distributed execution management system for running combustion models on widely distributed computers, including supercomputers; web-accessible data archiving capabilities for sharing graphical experimental or modeling data; electronic notebooks and shared workspaces for facilitating collaboration; visualization of combustion data; and video-conferencing and data-conferencing among researchers at remote sites. Security is a key aspect of the collaborative tools. In many cases, the authors have integrated these tools to allow data, including large combustion data sets, to flow seamlessly, for example, from modeling tools to data archives. In this paper the authors describe the work of a larger collaborative effort to design, implement and deploy the DCC.

  8. Internal combustion piston engines

    Energy Technology Data Exchange (ETDEWEB)

    Segaser, C.L.

    1977-07-01

    Current worldwide production of internal combustion piston engines includes many diversified types of designs and a very broad range of sizes. Engine sizes range from a few horsepower in small mobile units to over 40,000 brake horsepower in large stationary and marine units. The key characteristics of internal combustion piston engines considered appropriate for use as prime movers in Integrated Community Energy Systems (ICES) are evaluated. The categories of engines considered include spark-ignition gas engines, compression-ignition oil (diesel) engines, and dual-fuel engines. The engines are evaluated with respect to full-load and part-load performance characteristics, reliability, environmental concerns, estimated 1976 cost data, and current and future status of development. The largest internal combustion piston engines manufactured in the United States range up to 13,540 rated brake horsepower. Future development efforts are anticipated to result in a 20 to 25% increase in brake horsepower without increase in or loss of weight, economy, reliability, or life expectancy, predicated on a simple extension of current development trends.

  9. Issues in waste combustion

    Energy Technology Data Exchange (ETDEWEB)

    Gustavsson, Lennart; Robertson, Kerstin; Tullin, Claes [Swedish National Testing and Research Inst., Boraas (Sweden); Sundquist, Lena; Wrangensten, Lars [AaF-Energikonsult AB, Stockholm (Sweden); Blom, Elisabet [AaF-Processdesign AB, Stockholm (Sweden)

    2003-05-01

    The main purpose of this review is to provide an overview of the state-of-the-art on research and development issues related to waste combustion with relevance for Swedish conditions. The review focuses on co-combustion in grate and fluidised bed furnaces. It is primarily literature searches in relevant databases of scientific publications with to material published after 1995. As a complement, findings published in different report series, have also been included. Since the area covered by this report is very wide, we do not claim to cover the issues included completely and it has not been possitile to evaluate the referred studies in depth. Basic knowledge about combustion issues is not included since such information can be found elsewhere in the literature. Rather, this review should be viewed as an overview of research and development in the waste-to-energy area and as such we hope that it will inspire scientists and others to further work in relevant areas.

  10. Variáveis hematológicas e bioquímicas de peixe-boi da Amazônia (Trichechus inungui jovens

    Directory of Open Access Journals (Sweden)

    Isadora K.F. Sousa

    Full Text Available Resumo: Peixes-boi da Amazônia (Trichechus inungui jovens são frequentemente encontrados e resgatados de rios, no entanto para avaliar e monitorar o estado de saúde desses animais é necessário conhecer os valores de referência das variáveis hematológicas e bioquímicas nessa faixa etária. O trabalho objetivou determinar os valores hematológicos e bioquímicos de peixes-boi da amazônia jovens e saudáveis, mantidos em cativeiros. Foram coletadas 20 amostras sanguíneas de peixes-boi para a realização do hemograma e bioquímica. Os valores médios e desvio padrão das variáveis hematológicas foram: volume globular, 37±4%; eritrócitos, 4,4±0,35x106/μL; hemoglobina, 12,5±1,6g/dL; volume corpuscular médio (VCM, 85,33±4,28fL; hemoglobina corpuscular media (HCM, 28,29±1,39pg; e concentração de hemoglobina corpuscular media (CHCM, 33,13±0,20%, leucócitos totais, 9.080±1.868x103/μL; segmentados, 5.078±1.044,24x103/μL; linfócitos 3.556±1,063x103/μL; eosinófilos, 288± 215,51x103/μL; e monócitos, 165± 114,11x103/μL. A média e o intervalo (mínimo e máximo das variáveis bioquímicas foram: creatinina quinase (CK, 112,53 (50,10-295,80 U/L; aspartato aminotransferase (AST, 6,02 (2,80-10,20 U/L; gama glutamiltransferase (GGT, 25,24 (10,80-45,30 U/L; fosfatase alcalina (FA, 98,73 (14,66-198,30 U/L; proteína total, 6,12 (5,38-7,10 g/dL; albumina, 4,23 (3,50-5,00 g/dL; colesterol, 310,13 (144-518 mg/dL; triglicerídeos, 127,98 (57,50-213,50 mg/dL; glicose, 43,63 (24,50-73,80 mg/dL; ureia, 30,21 (14,30-54,25; creatinina, 1,34 (0,93-1,76 mg/dL; cálcio, 10,08 (9,25-11,10 mg/dL; e fósforo inorgânico; 6,50 (4,10-8,80 mg/dL. No presente trabalho foi possível determinar valores hematológicos e bioquímicos de peixes-boi da Amazônia (Trichechus inungui jovens, mantidos em cativeiro, os quais podem ser utilizados como referência para animais em cativeiro e de vida livre, mantidos em condições ambientais, e de manejo

  11. Faune de la grotte préhistorique du bois du Cantet (Espèche, Hautes - Pyrénées, France.

    Directory of Open Access Journals (Sweden)

    Andre Clot

    1984-01-01

    Full Text Available La fauna de la cueva prehistórica de Bois du Cantet (Espèche, Altos Pirineos, Francia se ha revelado muy variada (más de 100 especies: - El nivel magdaleniense, datado en 13.060 y 13.370 BP (Ly 1404 y 1403, contiene abundante reno e indica un ambiente frío, con proximidad de bosque y cercanía de masas de agua. - El contexto 7, pequeño divertículo de relleno natural, ha proporcionado una abundante microfauna datada en 10.920 BP (Ly 2614, con presencia de zorro ártico y de un gran felino de las cavernas (Panthera spelaea var. cloueti.

  12. Development of flameless combustion; Desarrollo de la combustion sin flama

    Energy Technology Data Exchange (ETDEWEB)

    Flores Sauceda, M. Leonardo; Cervantes de Gortari, Jaime Gonzalo [Universidad Nacional Autonoma de Mexico, Mexico, D.F. (Mexico)]. E-mail: 8344afc@prodigy.net.mx; jgonzalo@servidor.unam.mx

    2010-11-15

    The paper intends contribute to global warming mitigation joint effort that develops technologies to capture the CO{sub 2} produced by fossil fuels combustion and to reduce emission of other greenhouse gases like the NO{sub x}. After reviewing existing combustion bibliography is pointed out that (a) touches only partial aspects of the collective system composed by Combustion-Heat transfer process-Environment, whose interactions are our primary interest and (b) most specialists think there is not yet a clearly winning technology for CO{sub 2} capture and storage. In this paper the study of combustion is focused as integrated in the aforementioned collective system where application of flameless combustion, using oxidant preheated in heat regenerators and fluent gas recirculation into combustion chamber plus appropriated heat and mass balances, simultaneously results in energy saving and environmental impact reduction. [Spanish] El trabajo pretende contribuir al esfuerzo conjunto de mitigacion del calentamiento global que aporta tecnologias para capturar el CO{sub 2} producido por la combustion de combustibles fosiles y para disminuir la emision de otros gases invernadero como NOx. De revision bibliografica sobre combustion se concluye que (a) trata aspectos parciales del sistema compuesto por combustion-proceso de trasferencia de calor-ambiente, cuyas interacciones son nuestro principal interes (b) la mayoria de especialistas considera no hay todavia una tecnologia claramente superior a las demas para captura y almacenaje de CO{sub 2}. Se estudia la combustion como parte integrante del mencionado sistema conjunto, donde la aplicacion de combustion sin flama, empleando oxidante precalentado mediante regeneradores de calor y recirculacion de gases efluentes ademas de los balances de masa y energia adecuados, permite tener simultaneamente ahorros energeticos e impacto ambiental reducido.

  13. Kitab kuning dan perempuan, perempuan dan kitab kuning

    NARCIS (Netherlands)

    Bruinessen, M.M. van

    2007-01-01

    Kitab Kuning dan Emansipasi Perempuan: Konflik Budaya? Pengamatan-pengamatan Masdar mengenai kedudukan perempuan dalam diskursus (wacana, bahasan) dominan kitab kuning terasa tidak enak didengar tetapi memang sulit dibantah. Baik dalam penggunaan bahasa (yang sangat memihak kepada jenis mudzakkar) m

  14. Análise das operações de cross hedge do bezerro e do hedge do boi gordo no mercado futuro da BM&F

    Directory of Open Access Journals (Sweden)

    Rodrigo Lanna Franco da Silveira

    2003-01-01

    Full Text Available O estudo visa analisar as operações de cross hedge do bezerro na Bolsa de Mercadorias & Futuros (BM&F com o intuito de avaliar a real necessidade da existência de contratos futuros para este animal. Para tanto, foram calculados o risco de base destas operações, as razões de hedge ótimas e as efetividades nas principais praças de comercialização de gado bovino do país entre setembro de 1995 e fevereiro de 2001. As mesmas análises foram realizadas para o hedge do boi gordo. A razão de hedge ótima se mostrou elevada no cross hedge (entre 37% e 49% e no own hedge (entre 58% e 63%. Quanto à efetividade, constatou-se que no caso do own hedge, o risco de preço pode ser reduzido em cerca de 50% com a tomada de posição em contratos futuros na proporção de hedge ótima. No entanto, para o cross hedge, a efetividade foi bastante baixa - cerca de 1,5%. Isso se deve ao alto risco de base destas operações, aproximadamente 80% superior ao risco associado ao hedge do boi gordo nas semanas de vencimento dos contratos considerados neste período. Dessa forma, os resultados demonstram o acerto da BM&F quanto ao recente lançamento do contrato de bezerro.

  15. Análise da eficiência do mercado futuro brasileiro de boi gordo usando co-integração

    Directory of Open Access Journals (Sweden)

    André Steffens Moraes

    2009-09-01

    Full Text Available A hipótese de que os preços futuros são preditores não viesados dos preços à vista é uma hipótese conjunta de que os mercados são eficientes e que não existe prêmio ao risco. Entretanto, na presença de prêmio ao risco, a hipótese de não viés pode ser rejeitada mesmo quando o mercado é eficiente. Este artigo testa a eficiência do mercado futuro brasileiro do boi gordo na presença de prêmio ao risco, usando técnicas de co-integração. Os resultados mostram que o mercado futuro do boi gordo é eficiente e não viesado no longo prazo, independente da presença de prêmio ao risco.The hypothesis that future prices are unbiased predictors of spot prices is a joint hypothesis that markets are efficient and risk premium are absent. However, the unbiasedness hypothesis may be rejected in the presence of a risk premium, even when the market is efficient. The objective of this article is to test market efficiency for the Brazilian live cattle while permitting the presence of risk premium, using cointegration techniques. Results show that the future markets for live cattle are efficient and unbiasedness in the long run, and does not depend of the presence of a risk premium.

  16. Perancangan dan Analisis Redistribution Routing Protocol OSPF dan EIGRP

    Directory of Open Access Journals (Sweden)

    DWI ARYANTA

    2016-02-01

    Full Text Available Abstrak OSPF (Open Shortest Path First dan EIGRP (Enhanced Interior Gateway Routing Protocol adalah dua routing protokol yang banyak digunakan dalam jaringan komputer. Perbedaan karakteristik antar routing protokol menimbulkan masalah dalam pengiriman paket data. Teknik redistribution adalah solusi untuk melakukan komunikasi antar routing protokol. Dengan menggunakan software Cisco Packet Tracer 5.3 pada penelitian ini dibuat simulasi OSPF dan EIGRP yang dihubungkan oleh teknik redistribution, kemudian dibandingkan kualitasnya dengan single routing protokol EIGRP dan OSPF. Parameter pengujian dalam penelitian ini adalah nilai time delay dan trace route. Nilai trace route berdasarkan perhitungan langsung cost dan metric dibandingkan dengan hasil simulasi. Hasilnya dapat dilakukan proses redistribution OSPF dan EIGRP. Nilai delay redistribution lebih baik 1% dibanding OSPF dan 2-3% di bawah EIGRP tergantung kepadatan traffic. Dalam perhitungan trace route redistribution dilakukan 2 perhitungan, yaitu cost untuk area OSPF dan metric pada area EIGRP. Pengambilan jalur utama dan alternatif pengiriman paket berdasarkan nilai cost dan metric yang terkecil, hal ini terbukti berdasarkan perhitungan dan simulasi. Kata kunci: OSPF, EIGRP, Redistribution, Delay, Cost, Metric. Abstract OSPF (Open Shortest Path First and EIGRP (Enhanced Interior Gateway Routing Protocol are two routing protocols are widely used in computer networks. Differences between the characteristics of routing protocols pose a problem in the delivery of data packets. Redistribution technique is the solution for communication between routing protocols. By using the software Cisco Packet Tracer 5.3 in this study were made simulating OSPF and EIGRP redistribution linked by technique, then compared its quality with a single EIGRP and OSPF routing protocols. Testing parameters in this study is the value of the time delay and trace route. Value trace route based on direct calculation of cost

  17. Perawatan Pergeseran Mandibula dan Kliking Menggunakan Teknik Edgewise dan Trainer

    Directory of Open Access Journals (Sweden)

    Rully Utami

    2014-06-01

    Full Text Available Kasus ini terjadi pada perempuan usia 22 tahun yang bersedia dipublikasikan untuk kepentingan  ilmu pengetahuan. Keluhan utama mandibula dan dagunya bergeser ke kanan, gigitan terbuka posterior dan bunyi click di persendian temporomandibular. Diagnosis pasien adalah maloklusi Angle kelas III tipe dento skeletal, pergeseran garis tengah mandibula dan dagu ke kanan, gigitan terbuka posterior dan clicking pada sendi temporomandibular. Perawatan dilakukan dengan teknik Edgewise dan trainer. Leveling dan unraveling dilakukan menggunakan kawat stainless steel bulat diameter 0,014 mm dengan multiloop. Trainer digunakan untuk koreksi pergeseran mandibula. Perawatan dilakukan selama 11 bulan, dan menunjukkan hasil hubungan molar pertama kanan menjadi kelas I. Overjet meningkat dari 0,1 mm menjadi 2 mm, overbite meningkat dari 0,2 mm menjadi 2,57 mm, garis tengah mandibula yang semula bergeser ke kanan 4,38 mm menjadi 2,53 mm, gigitan terbuka posterior dan clicking telah terkoreksi. Compromised Treatment of Class III Malocclusion with Mandibular Shifting, Posterior Openbite and Clicking Using Edgewise Technique and Trainer In Adult. This case report described the treatment of an adult female 22 years old who complained that her mandibula and chin shift to the right, posterior openbite and clicking. The patient diagnosed class III molar relationship, skeletal class III malocclusion, mandibular midline and chin shift to the right, posterior openbite and clicking on temporomandibular joint. Treatment was conducted using combination between  Edgewise Technique and trainer.  Leveling and unraveling are achieved by round stainless steel archwire 0,014 mm with multiloop. Trainer used to corrected the mandibular shifting. Result after 1 years treatment showed that the right molar relationship became class I, overjet increased  from 0,1 mm to 2 mm, overbite increased  from 0,2 mm to 2,57 mm, mandibular midline shifting decresed from 4,38 mm to 2,53 mm

  18. Post combustion in converter steelmaking

    Energy Technology Data Exchange (ETDEWEB)

    Oghbasilasie, H.; Holappa, L.

    1997-12-31

    The purpose of this work is to study the fundamentals of post combustion and the effect of different process parameters on the post combustion ratio (PCR) and heat transfer efficiency (HTE) in converter steelmaking process. The PCR and HTE have been determined under normal operating conditions. Trials assessed the effect of lance height, vessel volume, foaming slag and pellet additions on PCR and HTE. Based on enthalpy considerations, post combustion of CO gas is regarded as one of the most effective means of increasing the heat supply to the BOP. The thermodynamic study of gas-metal-slag reactions gives the limiting conditions for post combustion inside the converter reactor. Different process parameters influencing both thermodynamic equilibria and kinetic conditions can greatly affect the post combustion ratio. Different features of converter processes as well smelting reduction processes utilizing post combustion have been reviewed. (orig.) SULA 2 Research Programme; 26 refs.

  19. Appui comptable aux acteurs impliqués dans le fonctionnement de la filière d'approvisionnement en énergie domestique de la ville de Mahajanga

    OpenAIRE

    Burny, Philippe; Randrianja, Hery; Montagne, Pierre; Rasamindisa, Alain; Crehay, Romain

    2010-01-01

    La mise en œuvre d'une politique de décentralisation et l'implication de la population dans la gestion des ressources naturelles locales ne sont pas possibles si l'on ne dispose pas sur place des compétences suffisantes. Or, la mise en place du système de contrôle et de taxation de la filière charbon de bois exige un minimum de savoir-faire relatif à la tenue d'une comptabilité simplifiée reflétant les flux physiques et financiers entre les diverses parties prenantes. C'est pourquoi une missi...

  20. KONSEP DAN PRAKTIK PENDIDIKAN MULTIKULTURAL DI AMERIKA SERIKAT DAN INDONESIA

    Directory of Open Access Journals (Sweden)

    Juju Masunah

    2011-11-01

    Full Text Available Abstract: Concepts and Practices of Multi Cultural Education in the United States and in Indonesia. The purpose of this article is to discuss multicultural education consepts and practices in the U.S.A and its application to Indonesia. Data is based on a case study research of two dance educators who implemented multicultural education concept in Columbus, Ohio in year 2007. The result of this research is that two dance educators teach students equally by developing a curriculum and pedagogy that face democracy for all students. This concept and practice is possible to be applied to dance education in Indonesia. Abstrak: Konsep dan Praktik Pendidikan Multikultural di Amerika Serikat dan Indonesia. Tujuan artikel ini adalah untuk mendiskusikan konsep dan praktik pendidikan multikultural di Amerika Serikat dan Indonesia. Data-data diperoleh dari hasil penelitian studi kasus dua orang pendidik tari di Columbus, Ohio yang menerapkan konsep pendidikan multikultural dalam pembelajaran tari pada tahun 2007. Peneli­tian ini menyimpulkan bahwa dua guru tari tersebut memberi perlakuan yang sama dan adil terhadap se­mua siswa dengan cara yang demokratis dengan memperhatikan keberagaman dan keperbedaan siswa. Cara-cara ini sangat memungkinkan untuk diaplikasikan dalam pendidikan tari di Indonesia.

  1. Sulfur Chemistry in Combustion I

    DEFF Research Database (Denmark)

    Johnsson, Jan Erik; Glarborg, Peter

    2000-01-01

    of the sulphur compounds in fossil fuels and the possibilities to remove them will be given. Then the combustion of sulphur species and their influence on the combustion chemistry and especially on the CO oxidation and the NOx formation will be described. Finally the in-situ removal of sulphur in the combustion...... process by reaction between SO2 and calcium containing sorbents and the influence on the NOx chemistry will be treated....

  2. Désulfuration : avant, pendant ou après la combustion ? Synthèse bibliographique Desulfurization: Before, During Or After Combustion? Bibliographic Synthesis

    Directory of Open Access Journals (Sweden)

    Benchecroun N.

    2006-11-01

    Full Text Available Les perspectives d'applications de nouvelles normes aux émissions des grandes installations de combustion, tant aux Etats-Unis qu'en Europe de l'Ouest ont suscité de nombreuses recherches. Les diverses publications qui leur sont consacrées traitent le plus souvent de la combustion de charbons et, beaucoup plus rarement, de l'adaptabilité de ces procédés à des combustibles liquides ou de techniques spécifiques. Les principaux points technico-économiques qui se dégagent sur la désulfuration des combustibles liquides sont donnés dans cet article. Enfin, au-delà des aspects techniques, on notera que la désulfuration des combustibles liquides, et plus particulièrement du fuel lourd, est liée à deux aspects plus politiques : - l'application de normes sur les émissions des installations de combustion (ou les dérogations possibles qui concernent non seulement les oxydes de soufre mais aussi les oxydes d'azote et les particules contenues dans les fumées; - l'avenir des fuels lourds tant sur le plan quantitatif (marché que qualitatif (constitution du pool fuel et spécifîcations. The prospects that new emission standards will be applied to large combustion installations, both in the United States and Western Europe, have given rise to extensive research. The different publications devoted to this research usually deal with coal combustion and more rarely with the suitability of such processes for liquid fuels or specific techniques. The leading technico-economic points involved in the desulfurization of liquid fuels are given in this article. Likewise, over and beyond the technical aspects, it can be seen that the desulfurization of liquid fuels, and more particularly of heavy fuel oil, is linked to two more politicalaspects:(a the application of standards on emissions from combustion installations (or possible derogations concerning not only sulfur oxides but also nitrogen oxides and particles contained in fumes;(b the future of

  3. 分数阶导数的 Du Bois-Reymond 引理及其在分数变分问题中的应用%Du Bois-Reymond's type lemmas of fractional derivatives and its applications in fractional variational problems

    Institute of Scientific and Technical Information of China (English)

    白定勇

    2014-01-01

    考虑Riemann-Liouville分数导数意义下的分数变分问题。首先,对于这类分数变分计算,证明了与古典Du Bois-Reymond 引理相对应的结果。然后,应用该结果建立了分数变分泛函的Euler必要条件。最后,讨论了全局极值问题,得到了一些全局极值存在的充分必要条件。%The paper concerns with fractional variational problems in terms of the Riemann-Liouville fractional derivative.First, for such kinds of fractional variational calculus , we prove a counterpart of the Du Bois-Rey-mond lemma in the classical calculus of variations .Then, this result is applied to establish the Euler necessary conditions on fractional variational functionals .Finally, we discuss the global minimum problems and obtain some sufficient and necessary conditions on the existence of global minimum .

  4. RADIKALISME NEGARA DAN KEKUASAAN PERSPEKTIF POLITIK GLOBAL

    Directory of Open Access Journals (Sweden)

    M. Sidi Ritaudin

    2014-12-01

    Full Text Available Meskipun tragedi kemanusiaan yang berbasis terorisme bersifat domistik regional, tetapi sebab musababnya, setelah dilakukan penelusuran secara kritis dan tajam serta mendalam oleh para ahli, adalah dimensi politik global. Ini bukan asumsi tetapi fakta dan realita. Sebut saja misalnya tragedi WTC di Amerika serikat 11 September 2001, yang berbuntut pada pembumihangusan Irak, pembantaian dan pembunuhan secara keji di Palestina. Dan saat ini terjadi pembumihangusan Irak jilid dua dengan peristiwa ISIS, tragedi kemanusiaan di Ukraina dan Somalia. Sebahagian pemerhati Islam dan Timur Tengah menengarai bahwa motif gerakan radikalisme merupakan antitesa dari keserakahan politik, ekonomi, kekuasaan dan keangkuhan peradaban. Paradoksal radikalisme Islam dengan para aktivis pengusung ide sekularisme, pluralisme, dan liberalisme agama sudah berlangsung cukup lama dan tiada berkesudahan, menarik untuk didiskusikan.

  5. CORPORATE IDENTITY SEJARAH DAN APLIKASINYA

    Directory of Open Access Journals (Sweden)

    Christine Suharto Cenadi

    1999-01-01

    Full Text Available In the recent globalization era%2C and the developed market%2C many companies compete to attract consumers to buy their products. One of the keys to compete and survive in this developing market is by creating an image and graphic identity. This paper will discuss about corporate identity%2C image%2C its purpose and applications. Abstract in Bahasa Indonesia : Dalam era globalisasi dewasa ini%2C dan dengan berkembangnya pasar (market%2C banyak perusahaan bersaing untuk menarik perhatian konsumen untuk membeli produknya. Salah satu cara untuk bersaing dan dapat bertahan di dalam pasar yang terus berkembang ini adalah dengan menciptakan suatu image dan identitas graphic. Tulisan ini akan membahas tentang corporate identity%2C image%2C fungsi dan aplikasinya

  6. Pulsating combustion - Combustion characteristics and reduction of emissions

    Energy Technology Data Exchange (ETDEWEB)

    Lindholm, Annika

    1999-11-01

    In the search for high efficiency combustion systems pulsating combustion has been identified as one of the technologies that potentially can meet the objectives of clean combustion and good fuel economy. Pulsating combustion offers low emissions of pollutants, high heat transfer and efficient combustion. Although it is an old technology, the interest in pulsating combustion has been renewed in recent years, due to its unique features. Various applications of pulsating combustion can be found, mainly as drying and heating devices, of which the latter also have had commercial success. It is, however, in the design process of a pulse combustor, difficult to predict the operating frequency, the heat release etc., due to the lack of a well founded theory of the phenomenon. Research concerning control over the combustion process is essential for developing high efficiency pulse combustors with low emissions. Natural gas fired Helmholtz type pulse combustors have been the experimental objects of this study. In order to investigate the interaction between the fluid dynamics and the chemistry in pulse combustors, laser based measuring techniques as well as other conventional measuring techniques have been used. The experimental results shows the possibilities to control the combustion characteristics of pulsating combustion. It is shown that the time scales in the large vortices created at the inlet to the combustion chamber are very important for the operation of the pulse combustor. By increasing/decreasing the time scale for the large scale mixing the timing of the heat release is changed and the operating characteristics of the pulse combustor changes. Three different means for NO{sub x} reduction in Helmholtz type pulse combustors have been investigated. These include exhaust gas recirculation, alteration of air/fuel ratio and changed inlet geometry in the combustion chamber. All used methods achieved less than 10 ppm NO{sub x} emitted (referred to stoichiometric

  7. The modes of gaseous combustion

    CERN Document Server

    Rubtsov, Nickolai M

    2016-01-01

    This book provides an analysis of contemporary problems in combustion science, namely flame propagation, detonation and heterophaseous combustion based on the works of the author. The current problems in the area of gas combustion, as well as the methods allowing to calculate and estimate limiting conditions of ignition, and flame propagation on the basis of experimental results are considered. The book focuses on the virtually inaccessible works of Russian authors and will be useful for experienced students and qualified scientists in the area of experimental studies of combustion processes.

  8. Combustion from basics to applications

    CERN Document Server

    Lackner, Maximilian; Winter, Franz

    2013-01-01

    Combustion, the process of burning, is defined as a chemical reaction between a combustible reactant (the fuel) and an oxidizing agent (such as air) in order to produce heat and in most cases light while new chemical species (e.g., flue gas components) are formed. This book covers a gap on the market by providing a concise introduction to combustion. Most of the other books currently available are targeted towards the experienced users and contain too many details and/or contain knowledge at a fairly high level. This book provides a brief and clear overview of the combustion basics, suitable f

  9. Mathematical Modeling in Combustion Science

    CERN Document Server

    Takeno, Tadao

    1988-01-01

    An important new area of current research in combustion science is reviewed in the contributions to this volume. The complicated phenomena of combustion, such as chemical reactions, heat and mass transfer, and gaseous flows, have so far been studied predominantly by experiment and by phenomenological approaches. But asymptotic analysis and other recent developments are rapidly changing this situation. The contributions in this volume are devoted to mathematical modeling in three areas: high Mach number combustion, complex chemistry and physics, and flame modeling in small scale turbulent flow combustion.

  10. Active Combustion Control Valve Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Over the past decade, research into active combustion control has yielded impressive results in suppressing thermoacoustic instabilities and widening the...

  11. Active Combustion Control Valve Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Over the past decade, research into active combustion control has yielded impressive results in suppressing thermoacoustic instabilities and widening the operational...

  12. Basic Aerodynamics of Combustion Chambers,

    Science.gov (United States)

    1981-05-20

    8217, tie imnrulse foree eyuilibr-um c’ the bomd’~ leye - is 173 pv-:irJ p~76vJbK 2sO) IL !-. = Zn pT -- a , bV T. z -,,r y.re C era 3oia * ~~I" onc art-=e...heat by combustion all have very large influences on the capabilities of a combustion chamber. A yellow- colored flame represents diffusion combustion in...the wakes of fuel droplets. Blue- colored flames represent gaseous combustion of evaporated vapors which have already left the fuel droplets. The

  13. Memahami Patofisiologi dan Aspek Klinis Syok Hipovolemik: Update dan Penyegar

    Directory of Open Access Journals (Sweden)

    Hardisman Hardisman

    2013-09-01

    Full Text Available AbstrakSecara patofisiologis syok merupakan gangguan hemodinamik yang menyebabkan tidak adekuatnya hantaran oksigen dan perfusi jaringan. Gangguan hemodinamik tersebut dapat berupa penurunan tahanan vaskuler sitemik terutama di arteri, berkurangnya darah balik, penurunan pengisian ventrikel dan sangat kecilnya curah jantung. Gangguan faktor-faktor tersebut disbabkan oleh bermacam-macam proses baik primer pada sistim kardiovaskuler, neurologis ataupun imunologis. Diantara berbagai penyebab syok tersebut, penurunan hebat volume plasma intravaskuler merupakan faktor penyebab utama. Terjadinya penurunan hebat volume intravaskuler dapat terjadi akibat perdarahan atau dehidrasi berat, sehingga menyebabkan yang balik ke jantung berkurang dan curah jantungpun menurun. Penurunan hebat curah jantung menyebabkan hantaran oksigen dan perfusi jaringan tidak optimal dan akhirnya menyebabkan syok. Pada tahap awal dengan perdarahan kurang dari 10%, gejala klinis dapat belum terlihat karena adanya mekanisme kompensasi sisitim kardiovaskuler dan saraf otonom. Baru pada kehilangan darah mulai 15% gejala dan tanda klinis mulai terlihat berupa peningkatan frekuensi nafas, jantung atau nadi (takikardi, pengisian nadi yang lemah, penurunan tekanan nadi, kulit pucat dan dingin, pengisian kapiler yang lambat dan produksi urin berkurang. Perubahan tekanan darah sistolik lebih lambat terjadi akibat adanya mekanisme kompensasi tadi, sehingga pemeriksaan klinis yang seksama harus dilakukan.Kata kunci: syok, hipovolemik dan patofisiologiAbstractShock is hemodynamic disorders, which causes inadequate oxygen delivery and perfusion. The hemodynamic disorders can be decreasing of systemic vascular resistant, venous return, ventricular filling and inadequate of cardiac output. The disorders are caused by cardiovascular dysfunction, neurologic or immunologic factors. Intravascular volume loss is one of the main factors, which is caused by severe dehydration or bleeding. These

  14. Sifilis Laten: Diagnosis dan Pengobatan

    Directory of Open Access Journals (Sweden)

    Rasmia Rowawi

    2013-09-01

    Full Text Available Abstrak   Sifilis laten merupakan stadium sifilis yang diakibatkan oleh T. pallidum yang masih menetap dalam tubuh, namun tidak menunjukkan gejala dan hanya menunjukkan hasil pemeriksaan serologis yang reaktif. Sifilis laten yang tidak diterapi dapat menetap bertahun-tahun atau seumur hidup dan dapat meningkatkan risiko terinfeksi HIV. Ibu hamil dengan sifilis laten dini akan menyebabkan sekitar 40% bayi yang dilahirkankannya tertular, 20% prematur, 10% lahir mati, dan 4% meninggal pada waktu dilahirkan. Diagnosis sifilis laten dini ditegakkan bila dalam 12 bulan terakhir ditemukan satu atau lebih dari tanda-tanda berikut ini: peningkatan titer VDRL/RPR sebanyak empat kali atau lebih; pada anamnesis didapatkan gejala sifilis primer dan sekunder; riwayat kontak seksual dengan seseorang yang didiagnosis atau diduga menderita sifilis primer atau sifilis sekunder atau sifilis laten dini; serta kontak seksual dengan seseorang dengan tes VDRL atau RPR dan TPHA reaktif. Pengobatan yang direkomendasikan untuk sifilis laten dini adalah benzatin penisilin 2,4 juta UI, IM, dosis tunggal, sedangkan pada sifilis laten lanjut, benzatin penisilin 2,4 juta UI, IM, diberikan 3 kali dengan interval satu minggu. Pemeriksaan serologis sifilis non- treponemal (VDRL atau RPR dilakukan setelah pengobatan 3, 6, 12, dan 24 bulan untuk menilai keberhasilan pengobatan.   Kata kunci: Diagnosis, silifis laten, terapi

  15. Combustion Branch Website Development

    Science.gov (United States)

    Bishop, Eric

    2004-01-01

    The NASA combustion branch is a leader in developing and applying combustion science to focused aerospace propulsion systems concepts. It is widely recognized for unique facilities, analytical tools, and personnel. In order to better communicate the outstanding research being done in this Branch to the public and other research organization, a more substantial website was desired. The objective of this project was to build an up-to-date site that reflects current research in a usable and attractive manner. In order to accomplish this, information was requested from all researchers in the Combustion branch, on their professional skills and on the current projects. This information was used to fill in the Personnel and Research sections of the website. A digital camera was used to photograph all personnel and these photographs were included in the personnel section as well. The design of the site was implemented using the latest web standards: xhtml and external css stylesheets. This implementation conforms to the guidelines recommended by the w3c. It also helps to ensure that the web site is accessible by disabled users, and complies with Section 508 Federal legislation (which mandates that all Federal websites be accessible). Graphics for the new site were generated using the gimp (www.gimp.org) an open-source graphics program similar to Adobe Photoshop. Also, all graphics on the site were of a reasonable size (less than 20k, most less than 2k) so that the page would load quickly. Technologies such as Macromedia Flash and Javascript were avoided, as these only function on some clients which have the proper software installed or enabled. The website was tested on different platforms with many different browsers to ensure there were no compatibility issues. The website was tested on windows with MS IE 6, MSIE 5 , Netscape 7, Mozilla and Opera. On a Mac, the site was tested with MS IE 5 , Netscape 7 and Safari.

  16. Alternate fuels; Combustibles alternos

    Energy Technology Data Exchange (ETDEWEB)

    Romero Paredes R, Hernando; Ambriz G, Juan Jose [Universidad Autonoma Metropolitana. Iztapalapa (Mexico)

    2003-07-01

    In the definition and description of alternate fuels we must center ourselves in those technological alternatives that allow to obtain compounds that differ from the traditional ones, in their forms to be obtained. In this article it is tried to give an overview of alternate fuels to the conventional derivatives of petroleum and that allow to have a clear idea on the tendencies of modern investigation and the technological developments that can be implemented in the short term. It is not pretended to include all the tendencies and developments of the present world, but those that can hit in a relatively short term, in accordance with agreed with the average life of conventional fuels. Nevertheless, most of the conversion principles are applicable to the spectrum of carbonaceous or cellulosic materials which are in nature, are cultivated or wastes of organic origin. Thus one will approach them in a successive way, the physical, chemical and biological conversions that can take place in a production process of an alternate fuel or the same direct use of the fuel such as burning the sweepings derived from the forests. [Spanish] En la definicion y descripcion de combustibles alternos nos debemos centrar en aquellas alternativas tecnologicas que permitan obtener compuestos que difieren de los tradicionales, al menos en sus formas de ser obtenidos. En este articulo se pretende dar un panorama de los combustibles alternos a los convencionales derivados del petroleo y que permita tener una idea clara sobre las tendencias de la investigacion moderna y los desarrollos tecnologicos que puedan ser implementados en el corto plazo. No se pretende abarcar todas las tendencias y desarrollos del mundo actual, sino aquellas que pueden impactar en un plazo relativamente corto, acordes con la vida media de los combustibles convencionales. Sin embargo, la mayor parte de los principios de conversion son aplicables al espectro de materiales carbonaceos o celulosicos los cuales se

  17. Sistem Komunikasi dan Informasi di Indonesia

    Directory of Open Access Journals (Sweden)

    Atie Rachmiatie

    2000-12-01

    Full Text Available Suatu Perubahan dan Tantangan Masa Depan Terdapat perubahan pola komunikasi dan informasi pada masyarakat. terutama perubahan dari segi perangkat keras, perangkat lunak. dan sumber daya manusia, yang berpengaruh terhadap sistem komunikasi dan informasi nasional, baik yang terjadi pada individu maupunpada lembaga/institusi yang berkaitan. Perubahan menyangkut pulapada kondisi organisasi pemerintah yang terkait dengan pengelolaan informasi. yaitu dengan ditata kembalinya sistem administrasi dan manajemen, baik secara intern, maupun ekstern berkaitan dengan organisasi luar. Apresiasi masyarakat terhadap materi informasi. pada kenyataannya. belum tersosialisasikan secara optimal. karena hal ini tergantung pada kebutuhan dan prioritas kebijakan institusi pemerintahan setempat. Dengan demikian. tidak semuajenis isi/materi informasi mendapatkan porsi yang sama dalam pemasyarakatannya.

  18. Combustion Stratification for Naphtha from CI Combustion to PPC

    KAUST Repository

    Vallinayagam, R.

    2017-03-28

    This study demonstrates the combustion stratification from conventional compression ignition (CI) combustion to partially premixed combustion (PPC). Experiments are performed in an optical CI engine at a speed of 1200 rpm for diesel and naphtha (RON = 46). The motored pressure at TDC is maintained at 35 bar and fuelMEP is kept constant at 5.1 bar to account for the difference in fuel properties between naphtha and diesel. Single injection strategy is employed and the fuel is injected at a pressure of 800 bar. Photron FASTCAM SA4 that captures in-cylinder combustion at the rate of 10000 frames per second is employed. The captured high speed video is processed to study the combustion homogeneity based on an algorithm reported in previous studies. Starting from late fuel injection timings, combustion stratification is investigated by advancing the fuel injection timings. For late start of injection (SOI), a direct link between SOI and combustion phasing is noticed. At early SOI, combustion phasing depends on both intake air temperature and SOI. In order to match the combustion phasing (CA50) of diesel, the intake air temperature is increased to 90°C for naphtha. The combustion stratification from CI to PPC is also investigated for various level of dilution by displacing oxygen with nitrogen in the intake. The start of combustion (SOC) was delayed with the increase in dilution and to compensate for this, the intake air temperature is increased. The mixture homogeneity is enhanced for higher dilution due to longer ignition delay. The results show that high speed image is initially blue and then turned yellow, indicating soot formation and oxidation. The luminosity of combustion images decreases with early SOI and increased dilution. The images are processed to generate the level of stratification based on the image intensity. The level of stratification is same for diesel and naphtha at various SOI. When O concentration in the intake is decreased to 17.7% and 14

  19. AIR EMISSIONS FROM SCRAP TIRE COMBUSTION

    Science.gov (United States)

    The report discusses air emissions from two types of scrap tire combustion: uncontrolled and controlled. Uncontrolled sources are open tire fires, which produce many unhealthful products of incomplete combustion and release them directly into the atmosphere. Controlled combustion...

  20. Path planning during combustion mode switch

    Science.gov (United States)

    Jiang, Li; Ravi, Nikhil

    2015-12-29

    Systems and methods are provided for transitioning between a first combustion mode and a second combustion mode in an internal combustion engine. A current operating point of the engine is identified and a target operating point for the internal combustion engine in the second combustion mode is also determined. A predefined optimized transition operating point is selected from memory. While operating in the first combustion mode, one or more engine actuator settings are adjusted to cause the operating point of the internal combustion engine to approach the selected optimized transition operating point. When the engine is operating at the selected optimized transition operating point, the combustion mode is switched from the first combustion mode to the second combustion mode. While operating in the second combustion mode, one or more engine actuator settings are adjusted to cause the operating point of the internal combustion to approach the target operating point.

  1. KAJIAN BIOAKTIF DAN ZAT GIZI PROPOLIS INDONESIA DAN BRASIL

    Directory of Open Access Journals (Sweden)

    Eliza Halim

    2012-11-01

    Full Text Available ABSTRACTIndonesia has a potency to produce its own propolis, however the propolis market in Indonesia is dominated by imported product, such as from Brazil. Currently, still there is no reasearch which evaluate bioactive compound and nutrient content of Indonesian Propolis (IP compare with Brazilian Propolis (BP. The objectivesof this study were to analyze bioactive compounds and nutrient contents of IP compared to BP. Bioactive compounds and nutrients content were analyzed by gas chromatography–mass spectrophotometry. The resultsshowed both IP and BP contain fenol, α-amyrin, cylolanost, and pyrimidines. Bioactive compounds which specifically found in IP were eudesmane compound, ethyl acridine, lupeol, friedooleanan; while β amyrin and cinnamic acid compound only found in BP. The nutrient contents of IP were higher than BP except for vitamin A. In conclusion, IP might have potential health benefit, similar to BP.Key words: propolis, bioactive, nutrientABSTRAKIndonesia mempunyai potensi untuk menghasilkan propolis tetapi pemasaran propolis di Indonesia didominasi oleh propolis impor seperti propolis yang berasal Brasil. Sampai saat ini belum ada penelitian yang mengungkapkandungan bioaktif dan zat gizi propolis Indonesia (PI dibandingkan dengan propolis Brasil (PB. Oleh karena itu tujuan penelitian ini adalah untuk melakukan kajian kandungan bioaktif dan zat gizi (vitamin dan mineral PI dibandingkan dengan PB. Komponen bioaktif dan kandungn gizi dianalisis dengan metode gas chromatography–mass spectrometry. Hasil analisis menyatakan bahwa baik PI maupun PB mengandung senyawa fenol, α-amyrin, cylolanost, dan pirimidin. Komponen bioaktif unik yang ditemukan di dalam PI adalah senyawaeudesmane, ethyl acridine, lupeol dan friedooleanan; sedangkan β-amyrin dan senyawa asam sinamat hanya ditemukan di dalam PB. Kandungan zat gizi PI lebih tinggi dari PB kecuali kandungan vitamin A. Hal ini menunjukkan bahwa PI kemungkinan mempunyai khasiat untuk

  2. PERBANDINGAN KARAKTERISTIK KIMIA KOPI LUWAK DAN KOPI BIASA DARI JENIS KOPI ARABIKA (Cafeea arabica. L) DAN ROBUSTA (Cafeea canephora. L)

    OpenAIRE

    Israyanti, -

    2012-01-01

    Penelitian ini bertujuan untuk mengetahui perbandingan jumlah kafein, karakteristik proksimat (protein dan lemak) dan rasa dan aroma antara kopi luwak dan kopi biasa dari jenis arabika (Cafeea arabica. L) dan robusta (Cafeea canephora. L). Perlakuan penelitian yakni A1 (luwak robusta), A2 (luwak arabika), B1 (robusta biasa) dan B2 (arabika biasa). Parameter penelitian yaitu pengujian organoleptik pada rasa (metode hedonik) dan aroma (metode ranking), analisa kafein dan uji proksimat berupa ...

  3. PERANAN KOMPETENSI INTI DALAM MERGER DAN AKUISISI

    Directory of Open Access Journals (Sweden)

    Dwi Sulistiani

    2013-11-01

    Full Text Available Dalam era globalisasi dan pedagangan  bebas dewasa ini strategi merger dan akuisisi  merupakan fenomena yang semakin marak dilakukan oleh para pelaku bisnis dan  semakin menarik untuk dicermati bersama. Untuk menjalankan perusahaan para manajemen perusahaan selalu dituntut menjaga pertumbuhan usahanya secara optimal. Penerapan strategi merger dan akuisisi merupakan jalan pintas untuk mewujudkan pertumbuhan usaha tanpa perusahaan perlu memulai dari awal suatu jenis usaha yang baru. Dalam suatu kondisi perusahaan yang kuat cenderung membeli perusahaan lain untuk meningkatkan daya saing dan penghematan biaya. Perusahaan yang terlibat dalam merger dan akuisisi akan dapat diperoleh pangsa pasar yang lebih besar dan efisiensi terhadap biaya. Perusahaan yang merasa tidak dapat bertahan hidup secara individual biasanya merelakan diri untuk menjadi target akuisisi. Merger dan akuisisi merupakan suatu realitas dan tantangan yang harus siap dihadapi oleh para pelaku usaha dalam era perdagangan bebas saat ini. Namun tingkat kesuksesan dalam melakukan kegiatan merger dan akuisisi juga sangat dipengaruhi oleh kondisi internal perusahaan meliputi sumber daya, kapabilitas dan kompetensi inti yang dimiliki oleh perusahaan. Tulisan ini akan mencoba memberikan pemahaman bahwa sumber daya, kapabilitas dan  kompetensi inti merupakan faktor penting dalam melakukan kegiatan penggabungan usaha yang pada akhirnya dapat menentukan tingkat keberhasilan proses merger dan akuisisi yang sedang dijalankan oleh perusahaan

  4. Manifold methods for methane combustion

    Energy Technology Data Exchange (ETDEWEB)

    Yang, B.; Pope, S.B. [Cornell Univ., Ithaca, NY (United States)

    1995-10-01

    Great progresses have been made in combustion research, especially, the computation of laminar flames and the probability density function (PDF) method in turbulent combustion. For one-dimensional laminar flames, by considering the transport mechanism, the detailed chemical kinetic mechanism and the interactions between these two basic processes, today it is a routine matter to calculate flame velocities, extinction, ignition, temperature, and species distributions from the governing equations. Results are in good agreement with those obtained for experiments. However, for turbulent combustion, because of the complexities of turbulent flow, chemical reactions, and the interaction between them, in the foreseeable future, it is impossible to calculate the combustion flow field by directly integrating the basic governing equations. So averaging and modeling are necessary in turbulent combustion studies. Averaging, on one hand, simplifies turbulent combustion calculations, on the other hand, it introduces the infamous closure problems, especially the closure problem with chemical reaction terms. Since in PDF calculations of turbulent combustion, the averages of the chemical reaction terms can be calculated, PDF methods overcome the closure problem with the reaction terms. It has been shown that the PDF method is a most promising method to calculate turbulent combustion. PDF methods have been successfully employed to calculate laboratory turbulent flames: they can predict phenomena such as super equilibrium radical levels, and local extinction. Because of these advantages, PDF methods are becoming used increasingly in industry combustor codes.

  5. Combustion & Laser Diagnostics Research Complex (CLDRC)

    Data.gov (United States)

    Federal Laboratory Consortium — Description: The Combustion and Laser Diagnostics Research Complex (CLRDC) supports the experimental and computational study of fundamental combustion phenomena to...

  6. La demande de bois-énergie à Ouagadougou : esquisse d’évaluation de l’impact physique et des échecs des politiques de prix

    Directory of Open Access Journals (Sweden)

    Boukary Ouedraogo

    2006-03-01

    Full Text Available Cet article vise à évaluer non seulement la demande de bois-énergie de la ville de Ouagadougou, l’impact de cette demande sur le patrimoine forestier de l’aire d’approvisionnement de cette ville, mais aussi l’esquisse d’une évaluation des échecs des politiques de prix du bois-énergie. Les méthodes d’évaluation de la consommation de cette source d’énergie sont passées en revue au regard des conditions d’offre de la ressource et des données existantes sur la demande de cette ressource. Les données sur les inventaires forestiers de l’aire d’approvisionnement de Ouagadougou en bois-énergie, ainsi que des enquêtes sur les ménages et les artisans ont permis d’estimer la consommation de Ouagadougou en bois-énergie et son impact sur l’épuisement des ressources forestières du pays.This paper aims at evaluating not only the wood-energy demand of Ouagadougou, the physic impact of this city wood energy consumption on the forest of its provisioning area, together with the causes of wood-energy price policy failures. The evaluation’s methods of wood energy consumption are reviewed in comparison with the resource supply conditions and the availability on data of wood resource demand. The data on the forest inventories of the wood-energy provisioning surface of Ouagadougou, as well as investigations into the households and the craftsmen allows estimating the consumption of Ouagadougou in wood-energy and its impact on the forest resources’ depletion. some complementary analysis have been done on the main causes of wood energy price policy failures.

  7. RANCANG BANGUN MODEL KOMPRESI DAN TARIK PERMODELAN SANDBOX DAN MANFAATNYA

    Directory of Open Access Journals (Sweden)

    Fahrudin Fahrudin

    2015-07-01

    Full Text Available Permodelan sandbox dibuat dengan system tektonik konvergen dan divergen dengan menggunakan pergerakan satu sumbu. Permodelan ini bertujuan untuk membuat alat mesin sandbox yang bisa digunakan untuk penelitian dan pengajaran. Mesin berhasil dibuat dan sudah diujicobakan. Ujicoba dengan menggunakan satu lapisan pasir yang diambil dari Formasi Ngrayong. Percobaan selanjutnya dengan beberapa lapisan. Percobaan dilakukan dengan pengamatan yang meliputi pengamatan permukaan dan penampang verikal. Pengamatan yang aspek morfologi, kelurusan struktur, dan perkembangan sesar yang terbentuk. Hasil percobaan menunjukkan bahwa pembentukan morfologi sangat berkaitan dengan pembentukan sesar. Struktur sesar dengan pola forward propagating thrust faults. Sesar tersebut disebabkan imbrikasi. Lipatan yang terbentuk akibat mekanisme propagasi sesar.[Design of Compression and Extensional of the Sandbox Model and Its Benefit] Divergent and convergent tectonic sytem can be studied from the sandbox modelling. This model has a axis of movement. Sandbox models itends to study the progress of structural geology such as fault and fold. We successfully made machine of sandbox. This machine has basal detachment from duraluminum. Material for model is taken by loose sand from Ngrayong Formation. This experiment focused to observation about morphology in surface and thrust or backthrust in subsurface. This experiment has compression system. Result of model was that morphological sequences associated with fault sequences. Fault is formed to have the pattern of forward propagating thrust faults. It’s caused by imbricate thrust system. Folding is formed by the mechanism of fault propagation folding. 

  8. MUWUJUDKAN BUDAYA POLITIK SANTUN, BERSIH DAN BERETIKA DALAM RANGKA MEMPERKOKOH KEHIDUPAN BERBANGSA DAN BERNEGARA

    Directory of Open Access Journals (Sweden)

    Wahyu Widodo

    2014-11-01

    Full Text Available Abstract Makalah ini membahas konsep budaya politik berpusat pada imajinasi (pikiran dan perasaan manusia yang merupakan dasar semua tindakan. Dalam rangka menuju arah pembangunan dan modernisasi suatu masyarakat akan menempuh jalan yang berbeda antara satu masyarakat dengan yang lain, dan itu terjadi karena peranan kebudayaan sebagai salah satu faktor. Budaya politik dapat membentuk aspirasi, harapan, preferensi, dan prioritas tertentu dalam menghadapi tantangan yang ditimbulkan oleh perubahan sosial politik. Pada gilirannya, disimpulkan bahwa peran budaya politik santun, bersih dan beretika dalam rangka memperkokoh kehidupan berbangsa dan bernegara menuju Indonesia baru adalah: pertama, etika politik dan pemerintahan mengandung misi kepada setiap pejabat dan elite politik untuk bersikap jujur, amanah, sportif, siap melayani, berjiwa besar, memiliki keteladanan, rendah hati, dan siap untuk mundur dari jabatan publik apabila terbukti melakukan kesalahan dan secara moral kebijakannya bertentangan dengan hukum dan rasa keadilan masyarakat. Kedua, perlu dilakukan upaya penanaman suatu kesadaran bahwa politik yang hendak kita perjuangkan bukan semata politik kekuasaan, melainkan suatu politik yang mengedepankan panggilan pengabdian demi kesejahteraan masyarakat luas, dialektika antara partai dan politikus serta masyarakat yang kritis. Ketiga, budaya politik santun, bersih dan beretika ini diperlukan karena dapat membuat para elite politik menjauhi sikap dan perbuatan yang dapat merugikan bangsa Indonesia. Akhirnya, disarankan agar dilaksanakan kembali pendidikan budi pekerti yang merupakan pondasi bagi pelaksanaan Civic Education agar tercipta generasi yang tidak hanya mau menjadi politisi, namun paham budaya dan etika politik.   Kata kunci: budaya politik, kehidupan berbangsa dan bernegara, menuju Indonesia baru

  9. Mission Success for Combustion Science

    Science.gov (United States)

    Weiland, Karen J.

    2004-01-01

    This presentation describes how mission success for combustion experiments has been obtained in previous spaceflight experiments and how it will be obtained for future International Space Station (ISS) experiments. The fluids and combustion facility is a payload planned for the ISS. It is composed of two racks: the fluids Integrated rack and the Combustion INtegrated Rack (CIR). Requirements for the CIR were obtained from a set of combustion basis experiments that served as surrogates for later experiments. The process for experiments that fly on the ISS includes proposal selection, requirements and success criteria definition, science and engineering reviews, mission operations, and postflight operations. By following this process, the microgravity combustion science program has attained success in 41 out of 42 experiments.

  10. KORELASI ANTARA ISLAM DAN EKONOMI

    Directory of Open Access Journals (Sweden)

    Akmal Zainal Abidin

    2015-03-01

    Full Text Available CORELATION BETWEEN ISLAM AND ECONOMY. This paper aims to identifies about the correlation between economic and Islam. Islam is the perfect religion that governs all things in life, including the economy. This is evident with the concept of  well-being which is described in the al-Quran and Sunnah. Basically the goal of every human life is to prosper, although humans make sense of  well- being with a different perspective. Most understand economics assume that welfare is the welfare of  earthly material. But to make sense of well-being with the term al-Falah, is meaning holistic wellbeing and balance between material and spiritual dimensions. al-Quran and Sunnah have taught that the human being will be achieved if  living in balance between material and spiritual. This is because human life does not just stop in the life of this world, but there is still a second life that will be faced by humanity in the hereafter, and well-being will be achieved with the truth is that people can balance the needs of the world and the hereafter, and that is what is taught in Islamic economics. Keywords: Islam, Economy, Prosperity. Tulisan ini bertujuan untuk menjelasakn tentang korelasi antara ekonomi  dan  Islam.  Islam  adalah  agama  yang  sempurna  yang mengatur segala hal dalam kehidupan ini, termasuk juga ekonomi. Hal ini terbukti dengan konsep kesejahteraan yang dipaparkan dalam al-Quran dan Sunnah. Pada dasarnya tujuan hidup setiap manusia adalah untuk mencapai kesejahteraan, meskipun manusia memaknai kesejahteraan dengan perspektif  yang berbeda-beda. Sebagian besar paham ekonomi menganggap bahwa kesejahteraan adalah kesejahteraan material duniawi. Namun Islam memaknai kesejahteraan dengan istilah  Falah  yang  berarti  kesejahteraan  holistik  dan  seimbang antara dimensi material dan spiritual. Al-Quran dan Sunnah telah mengajarkan bahwa kesejahteraan akan tercapai jika manusia menjalani hidup secara seimbang antara material dan

  11. KINERJA KEPALA SEKOLAH DALAM KEGIATAN BIMBINGAN DAN KONSELING

    Directory of Open Access Journals (Sweden)

    Abu Bakar M.Luddin

    2014-06-01

    Abstrak: Kinerja Kepala Sekolah dalam Kegiatan Bimbingan dan Konseling. Penelitian ini bertujuan mendeskripsikan kinerja kepala sekolah dalam pelaksanaan kegiatan bimbingan dan konseling. Penelitian dilaksanakan di SMU Negeri 2 Kota Binjai, dengan memergunakan rancangan deskriptif kualitatif. Subjek penelitian adalah kepala sekolah, koordinator bimbingan dan konseling, dan guru pembimbing. Data di­kumpulkan dengan observasi, wawancara mendalam, dan kajian dokumen, dan selanjutnya dianalisis sete­lah melalui proses triangulasi antarsubjek dan informasi. Temuan penelitian menunjukkan bahwa kinerja kepala sekolah terkait dengan pelaksanaan kegiatan bimbingan dan konseling masih belum sepenuhnya sebagaimana yang diharapkan. Kepala sekolah perlu meningkatkan kinerjanya dalam menjalankan fungsi koordinasi dan kepengawasan untuk mencapai kegiatan bimbingan dan konseling yang efektif.

  12. IKLIM SEKOLAH DAN EFIKASI KENDIRI DALAM KALANGAN GURU BIMBINGAN DAN KAUNSELING SEKOLAH MENENGAH DI KELANTAN

    OpenAIRE

    Ibrahim, Hasliza; Ismail, Siti Noor; Kassim, Mohamad Adnan Mohamad; Mohamad, Suhaila

    2017-01-01

    Artikel ini bertujuan untuk mengenal pasti hubungan antara iklim sekolah dan efikasi kendiri guru bimbingan dan kaunseling di negeri Kelantan.  Responden kajian adalah terdiri daripada 181 orang guru bimbingan dan kaunseling Sekolah Menengah di negeri Kelantan.  Kajian rintis dijalankan ke atas 30 orang guru bimbingan dan kaunseling di daerah Tanah Merah.  Secara spesifiknya, kaedah kuantitatif digunakan untuk tujuan pengumpulan data.  Maklum balas melalui soal selidik telah diperolehi dan se...

  13. Kandidiasis di Mulut akibat Khemoterapi dan Penatalaksanaannya

    OpenAIRE

    2016-01-01

    Latar belakang: kandidiasis (kandidosis) adalah infeksi jamur yang disebabkan oleh spesies Candida biasanya Candida albicans. Faktor predisposisi yang memicu kandidiasis adalah terganggunya ekologi mulut karena antara lain pemakaian antibiotika, kortikosteroid, penyakit kronis dan keganasan, beberapa gangguan darah; terapi radiasi di leher dan kepala; khemoterapi; leukimia, obat sitotoksik, juga kebersihan mulut yang buruk. Tujuan: melaporkan kasus kandidiasis di mulut karena khemoterapi dan ...

  14. PEMBELAJARAN SENI TARI: AKTIF, INOVATIF DAN KREATIF

    OpenAIRE

    Gandes Nurseto

    2015-01-01

    Pendidikan seni tari perlu diberikan pada Sekolah Dasar karena keunikan, kebermaknaan terletak pada pemberian pengalaman estetik dalam bentuk berapresiasi dan menggunakan model pembelajaran yang PAIKEM Pembelajaran, Aktif, Inovatif, Kreatif, Efektif dan Menyenagkan dalam proses pembelajaran didalam kelas dari Standar Kompetensi dan Komptensi Dasar mengapresiasi karya seni tari tunggal nusantara yang bertujuan untuk mengenalkan karya seni tari daerah lain. Masalah dalam penelitian ini bagaiman...

  15. The first turbulent combustion

    CERN Document Server

    Gibson, C H

    2005-01-01

    The first turbulent combustion arises in a hot big bang cosmological model Gibson (2004) where nonlinear exothermic turbulence permitted by quantum mechanics, general relativity, multidimensional superstring theory, and fluid mechanics cascades from Planck to strong force freeze out scales with gravity balancing turbulent inertial-vortex forces. Interactions between Planck scale spinning and non-spinning black holes produce high Reynolds number turbulence and temperature mixing with huge Reynolds stresses driving the rapid inflation of space. Kolmogorovian turbulent temperature patterns are fossilized as strong-force exponential inflation stretches them beyond the scale of causal connection ct where c is light speed and t is time. Fossil temperature turbulence patterns seed nucleosynthesis, and then hydro-gravitational structure formation in the plasma epoch, Gibson (1996, 2000). Evidence about formation mechanisms is preserved by cosmic microwave background temperature anisotropies. CMB spectra indicate hydr...

  16. Caracterização fisico-química e sensorial de geleia de mamão com araçá-boi

    Directory of Open Access Journals (Sweden)

    Eliseth de Souza Viana

    2012-12-01

    Full Text Available Foram elaboradas quatro formulações de geleia com as seguintes proporções de mamão (Carica papaya (M e araçá-boi (Eugenia stipitata (AB: F1 (70% M: 30% AB, F2 (60% M: 40% AB, F3 (40%M : 60% AB e F4 (30% M : 70% AB. Todas as formulações apresentaram proporção final de polpa e açúcar de 1:1, com 0,5% de pectina e teor de 65% de sólidos solúveis. As geleias foram analisadas quanto às características físico-químicas e sensoriais (teste de aceitação e preferência. O teste de aceitação foi realizado por 50 consumidores, por meio de escala hedônica de 7 pontos, avaliando-se os atributos: aparência, cor, aroma, sabor e textura. A acidez titulável variou entre 0,77 e 1,72 g de ácido cítrico100 g-1, estando dentro da faixa de acidez determinada para diferentes geleias de frutas. O teor de açúcares redutores foi mais elevado na formulação F4. As formulações apresentaram índice de aceitação acima de 90% para os atributos aparência, cor, aroma e textura. As formulações F1 e F2, com menores concentrações de araçá-boi, apresentaram maior aceitação para os atributos sensoriais cor e sabor. Entretanto, a formulação F1 apresentou elevada intenção de compra e foi considerada pelo mapa de preferência interno a mais aceita para todos os atributos avaliados, sendo, portanto, a mais adequada para a industrialização e consumo.

  17. Filtration combustion: Smoldering and SHS

    Science.gov (United States)

    Matkowsky, Bernard J.

    1995-01-01

    Smolder waves and SHS (self-propagating high-temperature synthesis) waves are both examples of combustion waves propagating in porous media. When delivery of reactants through the pores to the reaction site is an important aspect of the process, it is referred to as filtration combustion. The two types of filtration combustion have a similar mathematical formulation, describing the ignition, propagation and extinction of combustion waves in porous media. The goal in each case, however, is different. In smoldering the desired goal is to prevent propagation, whereas in SHS the goal is to insure propagation of the combustion wave, leading to the synthesis of desired products. In addition, the scales in the two areas of application may well differ. For example, smoldering generally occurs at a relatively low temperature and with a smaller propagation velocity than SHS filtration combustion waves. Nevertheless, the two areas of application have much in common, so that mechanisms learned about in one application can be used to advantage in the other. In this paper we discuss recent results in the areas of filtration combustion.

  18. Combustion Properties of Straw Briquettes

    Directory of Open Access Journals (Sweden)

    Zhao Qing-ling

    2013-05-01

    Full Text Available The low bulk density of straw is one of the major barriers, which blocks the collection, handling, transportation and storage. Densification of biomass into briquettes/pellets is a suitable method of increasing the bulk density of biomass. Yet in the process, a tremendous amount of air is ejected from biomass grind, which brings substantial specific variation including combustion property. Among them, combustion property is critical for proper design and operation of burning facilities. Therefore, a series of tests about combustion properties of 75mm diameter corn briquettes were done. First, the combustion process (ignition, full flaming and glowing phases., precipitation of tar were investigated by a heating stove, then, Some ash sample from the muffle burner was subjected to an ash melting characteristic test. The results show the combustion of briquettes takes more time than that of raw straw from ignition to complete combustion; in order to meet complete combustion in a short time, the raw straw needs more supply air volume than briquettes under the same α value; the temperature of furnace chamber should been controlled under 900°C, which help to reduce the dark smoke, tar and slag.

  19. Catalytic Combustion of Gasified Waste

    Energy Technology Data Exchange (ETDEWEB)

    Kusar, Henrik

    2003-09-01

    This thesis concerns catalytic combustion for gas turbine application using a low heating-value (LHV) gas, derived from gasified waste. The main research in catalytic combustion focuses on methane as fuel, but an increasing interest is directed towards catalytic combustion of LHV fuels. This thesis shows that it is possible to catalytically combust a LHV gas and to oxidize fuel-bound nitrogen (NH{sub 3}) directly into N{sub 2} without forming NO{sub x} The first part of the thesis gives a background to the system. It defines waste, shortly describes gasification and more thoroughly catalytic combustion. The second part of the present thesis, paper I, concerns the development and testing of potential catalysts for catalytic combustion of LHV gases. The objective of this work was to investigate the possibility to use a stable metal oxide instead of noble metals as ignition catalyst and at the same time reduce the formation of NO{sub x} In paper II pilot-scale tests were carried out to prove the potential of catalytic combustion using real gasified waste and to compare with the results obtained in laboratory scale using a synthetic gas simulating gasified waste. In paper III, selective catalytic oxidation for decreasing the NO{sub x} formation from fuel-bound nitrogen was examined using two different approaches: fuel-lean and fuel-rich conditions. Finally, the last part of the thesis deals with deactivation of catalysts. The various deactivation processes which may affect high-temperature catalytic combustion are reviewed in paper IV. In paper V the poisoning effect of low amounts of sulfur was studied; various metal oxides as well as supported palladium and platinum catalysts were used as catalysts for combustion of a synthetic gas. In conclusion, with the results obtained in this thesis it would be possible to compose a working catalytic system for gas turbine application using a LHV gas.

  20. On Lean Turbulent Combustion Modeling

    Directory of Open Access Journals (Sweden)

    Constantin LEVENTIU

    2014-06-01

    Full Text Available This paper investigates a lean methane-air flame with different chemical reaction mechanisms, for laminar and turbulent combustion, approached as one and bi-dimensional problem. The numerical results obtained with Cantera and Ansys Fluent software are compared with experimental data obtained at CORIA Institute, France. First, for laminar combustion, the burn temperature is very well approximated for all chemical mechanisms, however major differences appear in the evaluation of the flame front thickness. Next, the analysis of turbulence-combustion interaction shows that the numerical predictions are suficiently accurate for small and moderate turbulence intensity.

  1. Regulation possibilities of biomass combustion

    Science.gov (United States)

    Suzdalenko, Vera; Gedrovics, Martins; Zake, Maija; Barmina, Inesa

    2012-11-01

    The focus of the recent experimental research is to analyze the regulation possibilities of biomass combustion. Three possibilities were chosen as part of this research: a) biomass cofiring with propane, b) swirling flow with re-circulation zone, and c) use of a permanent magnet. The aim of the research is to provide stable, controllable and effective biomass combustion with minimum emissions. The special pilot device was created where biomass can be combusted separately and co-fired with propane. Wood pellets were used during the experiments.

  2. Combustion-gas recirculation system

    Science.gov (United States)

    Baldwin, Darryl Dean

    2007-10-09

    A combustion-gas recirculation system has a mixing chamber with a mixing-chamber inlet and a mixing-chamber outlet. The combustion-gas recirculation system may further include a duct connected to the mixing-chamber inlet. Additionally, the combustion-gas recirculation system may include an open inlet channel with a solid outer wall. The open inlet channel may extend into the mixing chamber such that an end of the open inlet channel is disposed between the mixing-chamber inlet and the mixing-chamber outlet. Furthermore, air within the open inlet channel may be at a pressure near or below atmospheric pressure.

  3. THE COMBUSTION ACTION VERIFICATION AND ESTIMATE OF COMBUSTION EFFICIENCY IN AVIATION GAS#TURBINE ENGINE COMBUSTION CHAMBERS

    OpenAIRE

    2011-01-01

    Verification results of combustion action simulating and estimate of calculation combustion efficiency that was given by simulating were shown. Mathematical model and its assumption are described. Execution calculations method was shown. Results of simulating are shown; their comparative analyses with results of experiment were executed. Accuracy of combustion action mathematical modeling by combustion efficiency in model with oneand two-stage reactions of combustion was estimated. The infere...

  4. Measures for a quality combustion (combustion chamber exit and downstream); Mesures pour une combustion de qualite (sortie de chambre de combustion et en aval)

    Energy Technology Data Exchange (ETDEWEB)

    Epinat, G. [APAVE Lyonnaise, 69 (France)

    1996-12-31

    After a review of the different pollutants related to the various types of stationary and mobile combustion processes (stoichiometric, reducing and oxidizing combustion), measures and analyses than may be used to ensure the quality and efficiency of combustion processes are reviewed: opacimeters, UV analyzers, etc. The regulation and control equipment for combustion systems are then listed, according to the generator capacity level

  5. Computational Modeling of Turbulent Spray Combustion

    NARCIS (Netherlands)

    Ma, L.

    2016-01-01

    The objective of the research presented in this thesis is development and validation of predictive models or modeling approaches of liquid fuel combustion (spray combustion) in hot-diluted environments, known as flameless combustion or MILD combustion. The goal is to combine good physical insight,

  6. Computational Modeling of Turbulent Spray Combustion

    NARCIS (Netherlands)

    Ma, L.

    2016-01-01

    The objective of the research presented in this thesis is development and validation of predictive models or modeling approaches of liquid fuel combustion (spray combustion) in hot-diluted environments, known as flameless combustion or MILD combustion. The goal is to combine good physical insight, a

  7. Pengaturan dan Pengawasan pada Bank Syariah

    Directory of Open Access Journals (Sweden)

    Ali Syukron

    2012-06-01

    Full Text Available Peran bank dalam melaksanakan tugas dan fungsinya perlu diatur secara baik dan benar. Hal ini bertujuan untuk menjaga kepercayaan nasabah terhadap aktivitas perbankan. Salah satu peraturan yang perlu dibuat untuk mengatur perbankan adalah peraturan mengenai permodalan bank yang berfungsi sebagai penyangga terhadap kemungkinan terjadinya kerugian. Tulisan ini merupakan studi pustaka dimana penulis mengelaborasi bagaimana pengaturan dan pengawasan pada bank syariah yang ada di berbagai negera. Dalam tulisan ini, penulis mengambil sampel negara Malaysia,  Pakistan, Kuwait, dan Inggris. Alasan memilih keempat negara tersebut karena Malaysia dan Kuwait memiliki kemiripan dengan Indonesia yang mengadopsi dual banking system.

  8. Simulation numérique du transfert de chaleur dans un moteur-fusée à propergol liquide

    Directory of Open Access Journals (Sweden)

    B. KHELIDJ

    2015-03-01

    Full Text Available Ce travail est une contribution à l'étude du refroidissement d'un moteur-fusée à propergol liquide. En effet pour protéger la paroi de la chambre propulsive, un système de refroidissement est nécessaire, car la température des gaz de combustion du propergol liquide dans la chambre de combustion, est très élevée. C'est pour montrer l'intérêt du refroidissement de la paroi de la chambre propulsive qu'une étude de simulation numérique, des phénomènes de combustion et de refroidissement dans la chambre propulsive, a été réalisée en régime permanent à l'aide du code de calcul Fluent. Les résultats de simulation, notamment ceux relatifs aux températures des parois le long de la chambre propulsive ont été confrontés à ceux trouvés dans la littérature.

  9. ANALISIS PEMBELAJARAN HUMANIS DAN KONSTRUKTIVISKARAKTER, DAN KEMAMPUAN LITERASI MATEMATIKA

    Directory of Open Access Journals (Sweden)

    Muhammad Jazimul Ni’am

    2014-02-01

    Full Text Available AbstrakTujuan penelitian ini adalah untuk mengetahui pencapaian indikator teori humanismedankonstruktivismedalamperencanaan, bahanajar,danprosespembelajaranmateritrigonometri. Selainitu, ingindiketahui kemampuanliterasi matematikadankarakteryangmunculsebagaihasilbelajar.Penelitianinimerupakanpenelitiankualitatif.Instrumen yang disusun dan dikembangkan terdiri dari instrumen penila-ian perangkat pembelajaran,instrumen penilaian proses pembelajaran, tes kemampuanliterasimatematika,daninstrumenpenilaiankarakter.Validitasinstrumenpenelitianditentukanberdasarkan validasitimahli dan hasil tes uji cobadi lapangan.Teknikpengumpulandata yaitudenganmetode tes,observasi,wawancara,dan angket.Analisisdatadilakukan sebelum,selama, dan setelah penelitianberupaanalisisdiskriptif kualitatif.Keabsahan data hasil penelitian diuji menggunakan metode trianggulasidata. PenilaianterhadapRPP dan proses pembelajaranberada pada levelyangrendah, penilaian bahan ajar tergolong sedang jika dilihat daritiga aspek yaitupembelajaranhumanis,konstruktivis,dankemampuanliterasimatematika.Pencapaiankemampuan literasi matematikamasihdalam levelmenerjemahkanmasalahkontekstualkemodelmatematika dan belummampumencapai tahap menerapkandanmenafsirkan.Ketujuhkarakteryangdiamati belumsepenuhnyaterlihat. Karakteryangterlihat selamapembelajaran adalah jujur,toleransi,tanggungjawab,rasaingintahu, dan percayadiri.AbstractThe purpose of  this study was to determine the achievement indicators humanism andconstructivism theory in planning, teaching materials, and learning materials in matter trigonometry.In addition, it will be analyzedthe mathematical literacyskills andcharacterthatappearsas a resultof learning. This research is qualitative. The instrument was conceived anddeveloped is instrument to assess of  learning tools such as lesson plans and teaching materials, learning assessment, tests of  mathematical literacy skills, and instrument of  character. Validi-ty instruments of

  10. STRUKTUR DAN PRODUKSI LEBAH Trigona spp. PADA SARANG BERBENTUK TABUNG DAN BOLA

    Directory of Open Access Journals (Sweden)

    Putu Ade Hinduari Putra

    2015-12-01

    Full Text Available Lebah tanpa sengat (Trigona spp. dapat menghasilkan madu yang bermanfaat bagi kesehatan. Penelitian bertujuan untuk mengetahui : (1 morfologi Trigona spp., (2 struktur internal sarang Trigona spp. pada sarang berbentuk tabung dan bola, (3 volume sarang serta perkiraan produksi madu, beebread dan selanakan Trigona spp. pada sarang berbentuk tabung dan bola. Penelitian dilaksanakan pada bulan November 2014. Sampel yang digunakan adalah koloni dan sarang Trigona spp. berbentuk tabung dan bola yang diambil di Desa Padang Tunggal,Kecamatan Selat, Kabupaten Karangasem, Bali. Hasil penelitian menunjukan bahwa nama spesies dari sampel koloni Trigona spp. pada sarang berbentuk tabung dan bola adalah Trigona laeviceps. Struktur internal sarang Trigona spp. pada sarang berbentuk tabung dan bola mempunyai pola susunan yaitu pot madu, pot beebread dan pot sel anakan. Volume sarang besar memberikan perkiraan total jumlah produksi madu, beebread dan selanakan lebih banyak dibandingkan volume sarang kecil.

  11. PERAN KEPALA SEKOLAH DAN PUSTAKAWAN DALAM PEMBERDAYAAN PERPUSTAKAAN SD MUHAMMADIYAH SAPEN DAN SD NEGERI GIWANGAN

    Directory of Open Access Journals (Sweden)

    Widya Setyaningrum Bagyoastuti

    2016-04-01

    Full Text Available Penelitian ini bertujuan untuk mendeskripsikan: (1 peran kepala sekolah dalam memberdayakan perpustakaan sekolah dasar, dan (2 peran pustakawan dalam memberdayakan perpustakaan sekolah dasar. Pendekatan kualitatif digunakan dalam penelitian ini dengan menjadikan perpustakaan SD Muhammadiyah Sapen dan SD Negeri Giwangan sebagai subjek penelitian. Data penelitian dikumpulkan melalui teknik observasi, wawancara, dan dokumentasi kemudian dianalisis dengan mengacu pada model interaktif menurut Miles dan Huberman. Hasil penelitian menunjukkan bahwa pemberdayaan perpustakaan sekolah dasar dimulai manakala terdapat dukungan kepala sekolah dan hadirnya pustakawan penuh waktu yang profesional. Kepala sekolah berperan sebagai (1 manajer sekolah, (2 pemimpin instruksional, dan (3 agen perubahan. Pustakawan berperan sebagai (1 manajer perpustakaan, (2 ahli informasi dan penggiat literasi informasi, (3 pelaku instruksional, dan (4 kolaborator. Pemberdayaan perpustakaan dapat dilakukan dengan (1 meningkatkan partisipasi warga sekolah dalam pengembangan koleksi pustaka, (2 meningkatkan kolaborasi antara pustakawan dengan guru dalam pembelajaran, dan (3 pengembangan literasi informasi yang terintegrasi ke dalam pembelajaran.

  12. ETIKA BISNIS AL-GHAZALI DAN ADAM SMITH DALAM PERSPEKTIF ILMU BISNIS DAN EKONOMI

    Directory of Open Access Journals (Sweden)

    AM. M. Hafidz MS.

    2013-05-01

    Full Text Available Penelitian ini adalah untuk mengeksplorasi: (1 pembangunan etika bisnis yang telah dirumuskan oleh al-Ghazali dan Adam Smith, (2 persamaan dan perbedaan antara dua etika bisnis pria, dan (3 relevansi bisnis mereka etika bisnis modern dunia dan ekonomi. Bisnis etika dibangun oleh al-Ghazali dan Smith di dataran praksis tidak jauh berbeda. Etika bisnis konstruksi dibangun oleh al-Ghazali didasarkan pada prinsip-prinsip seperti orientasi itikad baik tentang dunia dan akhirat, kejujuran, kepentingan pribadi dan social keseimbangan, dan perilaku / perbuatan yang tepat. Di sisi lain, etika bisnis konstruksi dibangun oleh Smith, berdasarkan keadilan, altruisme, keadilan dan liberal (kebebasan ekonomi. Baik etika bisnis yang diperkenalkan oleh kedua sangat relevan untuk menjadi digunakan sebagai bahan pokok acuan dalam etika bisnis modern.

  13. PENGARUH PEMBERIAN HIJAUAN DAN KONSENTRAT MENGANDUNG UREA-KAPUR DAN UBI KAYU TERHADAP PENAMPILAN KAMBING PE

    Directory of Open Access Journals (Sweden)

    I G. Mahardika

    2015-06-01

    Full Text Available Penelitian telah dilakukan untuk mengetahui pengaruh pemberian hijauan dan konsentrat yang mengandung urea-kapur dan ubi kayu terhadap produktivitas kambing. Penelitian menggunakan Rancangan Acak Lengkap dengan 4 perlakuan dan 4 ulangan. Ke empat perlakuan yang dicobakan adalah Perlakuan A: ransum dengan 75% konsentrat (mengandung 4% urea, 2% kapur dan 50% ubikayu dan 25% hijauan (40% gamal dan 60% rumput raja, perlakuan B: rasnsum yang terdiri 60% konsentrat 40% hijauan, perlakuan C: ransum dengan 45% konsentrat dan 55% hijauan dan perlakuan D: ransum dengan 30% konsentrat dan 70% hijauan. Hasil penelitian mendapatkan bahwa produktivitas kambing yang mendapat ransum dengan level konsentrat 45% sampai 75% tidak berbeda sedangkan yang mendapat ransum dengan level konsentrat 30% lebih rendah. Ransum yang memebrikan nilai ekonomi tertinggi adalah ransum yang mengandung konsentrat antara 45% sampai 60%.

  14. IDENTIFIKASI DAN TEKNIK PENGENDALIAN HAMA DAN PENYAKIT BENIH PULAI (Alstonia scholaris

    Directory of Open Access Journals (Sweden)

    Evayusvita Rustam

    2016-09-01

    Full Text Available Tujuan dari penelitian ini adalah mengidentifikasi dan mengendalikan hama dan penyakit benih pulai yang terbawa dari lapangan. Identifikasi cendawan dilakukan dengan menginkubasi benih selama 7 hari, sedangkan untuk pengendalian terhadap hama dan penyakit benih diberi insektisida nabati dan kimia. Dari hasil identifikasi jenis cendawan pada benih pulai yaitu Aspergillus sp, Curvularia sp., Fusarium sp., Penicillium sp. dan Rhizopus sp. Persentase infeksi cendawan tertinggi pada benih pulai asal Nagrak (Aspergillus sp. sebesar 92%, Curvularia sp. 29% dan Fusarium sp. 21%, sedangkan persentase infeksi cendawan terendah pada benih pulai asal Jambi (Aspergillus sp. 2% dan Fusarium sp. 1%. Perlakuan terbaik yang dapat mengendalikan hama pada benih pulai adalah perlakuan yang diberi ekstrak daun suren dalam wadah plastik tertutup dan disimpan di ruang suhu kamar 270C selama 2 bulan. Pengendalian penyakit, terbaik pada benih adalah memberi bubuk kunyit ke dalam wadah plastik tertutup dan disimpan di lemari es 160C. Perlakuan tersebut menghasilkan daya kecambah masing-masing 70%.

  15. Sistem Informasi Penjualan dan Pemesanan Layanan Berbasis Web dan SMS Gateway di Petshop "PetZone"

    Directory of Open Access Journals (Sweden)

    Siska Fadhilah Wati

    2013-09-01

    Full Text Available Dewasa ini teknologi informasi sangat membantu dalam dunia bisnis. Kemudahan yang ditawarkan akan menjaring lebih banyak konsumen. Namun, perusahan tingkat menengah seperti PetZone saat ini masih jarang yang menawarkan kemudahan berbelanja atau pemesanan layanan secara online. Oleh karena itu diperlukan sebuah sistem berbasis web di perusahaan PetZone yang dapat memudahkan pemilik dan karyawan dalam apenjualan, pelayanan, dan pemasaran, serta memudahkan pelanggan dalam jual-beli barang dan jasa. Atas dasar masalah tersebut dibangun Sistem Informasi Penjualan dan Pemesanan Layanan Berbasis Web dan SMS Gateway untuk menunjang proses bisnis yang ada. Sistem informasi dibangun menggunakan bahasa pemrograman PHP framework Codeigniter, javascript untuk tampilan yang dinamis, dan database MySQL. Proses pembuatan dan pengembangan Sistem Informasi Penjualan ini menggunakan metode air terjun. Metode air terjun meliputi kebutuhan pengguna, analisis, rancangan, implementasi dan pengujian. Pemodelan Sistem Informasi yang dibangun menggunakan metode berorientasi objek UML (Unified Modeling Language yang terdiri dari Use case  diagram, Class diagram dan Sequence diagram. Hasil pengujian Sistem Informasi Penjualan dan Pemesanan Layanan Berbasis Web dan SMS Gateway menunjukkan bahwa semua fitur yang terdapat baik dalam sistem informasi maupun SMS gateway dapat bekerja dengan baikdengan ratusan sample data, dan server SMS gateway dapat memproses lebih dari satu SMS secara bersamaan. Dalam perkembangan ke depannya nanti, Sistem Informasi Penjualan dan Pemesanan Layanan Berbasis Web dan SMS Gateway masih dapat dikembangkan lagi dengan menambah fitur-fitur pada SMS gateway sehingga lebih memudahkan konsumen.

  16. PERANCANGAN DAN PENGEMBANGAN PROTOTYPE SISTEM PARKIR

    Directory of Open Access Journals (Sweden)

    Indah Ayu Septriyaningrum

    2016-10-01

    Abstrak  Sistem parkir manual pada pelayanan parkir mall memerlukan pengelolaan dan pengembangan sistem yang lebih rumit dan jauh dari kata efisien. Informasi yang didapatkan pengelola parkir terkait kondisi parkir di lapangan setiap harinya masih kurang. Tujuan dari penelitian ini adalah merancang dan mengembangkan prototype sistem parkir. Metode pengembangan dan perancangan sistem pada penelitian ini adalah metode Waterfall. Hasil yang didapatkan adalah sistem ini dapat mendeteksi keberadaan mobil pada slot parkir yang tersedia dengan bantuan Intel Galileo Board Gen 2 sebagai kontroler, sensor LDR (Light Dependent Resistor dan sensor ultrasonik (PING sebagai alat bantu pendeteksi keberadaan mobil. Sistem dapat menampilkan aktifitas parkir pada aplikasi web seperti kondisi lahan parkir kosong, lahan terisi, waktu masuk, waktu keluar, lama parkir dan kapasitas parkir yang tersedia serta grafik pemakaian lahan parkir. Dapat disimpulkan bahwa perancangan dan pengembangan sistem berhasil diimplementasikan. Kata Kunci : Sistem parkir, waterfall, Intel Galileo Board Gen 2,sensor LDR (Light Dependent Resistor, sensor ultrasonik

  17. Combustion Process Modelling and Control

    Directory of Open Access Journals (Sweden)

    Vladimír Maduda

    2007-10-01

    Full Text Available This paper deals with realization of combustion control system on programmable logic controllers. Control system design is based on analysis of the current state of combustion control systems in technological device of raw material processing area. Control system design is composed of two subsystems. First subsystem is represented by software system for measured data processing and for data processing from simulation of the combustion mathematical model. Outputs are parameters for setting of controller algorithms. Second subsystem consists from programme modules. The programme module is presented by specific control algorithm, for example proportional regulation, programmed proportional regulation, proportional regulation with correction on the oxygen in waste gas, and so on. According to the specific combustion control requirements it is possible built-up concrete control system by programme modules. The programme modules were programmed by Automation studio that is used for development, debugging and testing software for B&R controllers.

  18. Putting combustion optimization to work

    Energy Technology Data Exchange (ETDEWEB)

    Spring, N.

    2009-05-15

    New plants and plants that are retrofitting can benefit from combustion optimization. Boiler tuning and optimization can complement each other. The continuous emissions monitoring system CEMS, and tunable diode laser absorption spectroscopy TDLAS can be used for optimisation. NeuCO's CombustionOpt neural network software can determine optimal fuel and air set points. Babcock and Wilcox Power Generation Group Inc's Flame Doctor can be used in conjunction with other systems to diagnose and correct coal-fired burner performance. The four units of the Colstrip power plant in Colstrips, Montana were recently fitted with combustion optimization systems based on advanced model predictive multi variable controls (MPCs), ABB's Predict & Control tool. Unit 4 of Tampa Electric's Big Bend plant in Florida is fitted with Emerson's SmartProcess fuzzy neural model based combustion optimisation system. 1 photo.

  19. Flameless Combustion for Gas Turbines

    Science.gov (United States)

    Gutmark, Ephraim; Li, Guoqiang; Overman, Nick; Cornwell, Michael; Stankovic, Dragan; Fuchs, Laszlo; Milosavljevic, Vladimir

    2006-11-01

    An experimental study of a novel flameless combustor for gas turbine engines is presented. Flameless combustion is characterized by distributed flame and even temperature distribution for high preheat air temperature and large amount of recirculating low oxygen exhaust gases. Extremely low emissions of NOx, CO, and UHC are reported. Measurements of the flame chemiluminescence, CO and NOx emissions, acoustic pressure, temperature and velocity fields as a function of the preheat temperature, inlet air mass flow rate, exhaust nozzle contraction ratio, and combustor chamber diameter are described. The data indicate that larger pressure drop promotes flameless combustion and low NOx emissions at the same flame temperature. High preheated temperature and flow rates also help in forming stable combustion and therefore are favorable for flameless combustion.

  20. Aspects chimiques de la combustion du charbon pulvérisé. Première partie Chemical Aspects of the Combustion of Pulverized Coal. Part One

    OpenAIRE

    De Soete G. G.

    2006-01-01

    II n'est pas facile de parvenir à une vue complète des multiples phénomènes chimiques dont la flamme de charbon pulvérisé est le siège. La présente étude bibliographique s'efforce de donner plus qu'une juxtaposition des données de la littérature récente, en risquant une tentative de présentation cohérente des mécanismes chimiques clés qui s'affrontent dans cette combustion. Ces mécanismes font intervenir des réactions en phase gazeuse relativement rapides (combustion des produits gazeux de py...

  1. ESPÉCIES INDICADAS PARA A RECOMPOSIÇÃO DA FLORESTA CILIAR DA SUB-BACIA DO RIO PEIXE-BOI, PARÁ

    Directory of Open Access Journals (Sweden)

    Igor Do Vale

    2014-01-01

    Full Text Available This study aims to indicate native species to be used in the restoration of degraded riparian forests in the subwatershed of Peixe-Boi river. All trees and shrubs with diameter at breast height (DBH > 5 cm were inventoried in ten areas of secondary forest and six areas of igapó forest. The results were analyzed by Principal Component Analysis and the silviculture of the species was assessed by literature review. In Igapó areas 66 species were found; the areas had low richness and low diversity index of Shannon, when compared with data from the secondary forests. The floristic composition was heterogeneous, and the floristic similarity is higher between areas that are closer geographically. In the secondary forests were found 175 species; the areas showed high abundance of individuals, high species richness, diversity and evenness. Secondary forests were separated according to geographic proximity and age, which is directly linked to the successional stage. The PCA analysis established the ecological importance of 29 tree species; however only ten species had enough silvicultural information. Due to a greater ecological importance and viable silvicultural techniques available in the literature, Carapa guianensis , Pachira aquatica , Spondias mombin , Tapirira guianensis and Virola guianensis are the most suitable species to restore the degraded areas, in association with Inga edulis , Jacaranda copaia , Pseudopiptadenia psilostachya , Simarouba amara and Vismia guianensis of the secondary forests, that can be planted in the borders and in the nearby areas of igapó forests.

  2. Determination of wind speed and associated loads over the sports facility collapsed during the severe windstorm of 24 January 2009 in Sant Boi de Llobregat (Barcelona

    Directory of Open Access Journals (Sweden)

    J. Mazón

    2011-01-01

    Full Text Available The severe windstorm of 24 January 2009, caused by an explosive cyclogenesis, affected coastal and precoastal areas of the northeast of the Iberian Peninsula, where damages were numerous and significant, both in urban areas and in forests. One of the most important effects was the collapse of a sports facility in Sant Boi de Llobregat (10 km southwest of Barcelona, killing four children. The objective of this study is to estimate the wind speed over the sports facility and calculate the suction of the wind on the roof of the building, and the consequent collapse of the walls. To get a first approximation, a simulation of the episode around the time of maximum wind gust was inspected using the mesoscale model MM5. In the second part, the damage around the collapsed facility was analyzed, with which we note the fact that a truck was dragged and knocked over by the wind. This analysis allows for the conclusion that, in conjunction with the maximum wind gust, there was a sudden and very local shift in the wind, which caused the gust to hit the building head on. Based on this observation, the wind speed on surface and at 7 m (roof of the building was estimated, and the suction of the wind was calculated.

  3. Retention of aqueous {sup 226}Ra fluxes from a sub-aqueous mill tailings disposal at the Bois Noirs site (Loire, France)

    Energy Technology Data Exchange (ETDEWEB)

    Courbet, Christelle; Simonucci, Caroline; Dauzeres, Alexandre; Matray, Jean-Michel [French Institute for Radiation protection and Nuclear Safety - IRSN, Radiation Protection Division - PRP, Nuclear Waste and Geosphere Department - DGE, SRTG/LETIS, B.P. 17, 92262 Fontenay-Aux-Roses (France); Bassot, Sylvain [French Institute for Radiation protection and Nuclear Safety - IRSN, Radiation Protection Division - PRP, Nuclear Waste and Geosphere Department - DGE, SRTG/LAME, B.P. 17, 92262 Fontenay-Aux-Roses (France); Mangeret, Arnaud [French Institute for Radiation protection and Nuclear Safety - IRSN, Radiation Protection Division - PRP, Nuclear Waste and Geosphere Department - DGE, SEDRAN/BRN, B.P. 17, 92262 Fontenay-Aux-Roses (France)

    2013-07-01

    This study focuses on a sub-aqueous mill tailings disposal site located in France (Bois Noirs) where 1.3 million tons of uranium mill sludge (fine tailings fraction < 50 μm) have been disposed since the 60's in a man-made pond below 4 meters of water maintained artificially by a rock-fill dam. A significant attenuation of aqueous {sup 226}Ra activity is observed in ground waters. This paper presents the preliminary modeling work performed for evaluating the role of water-rock interactions on aqueous {sup 226}Ra attenuation through the dam. This modeling attempt, assuming thermodynamic equilibrium, aims at checking the hydrochemical conceptual model developed in a previous study, in which Ra retention through the dam was assumed to most likely result from sorption onto metallic oxide-hydroxides. A 2D coupled reactive transport model was conceived to test this hypothesis over time and identify the measurements required to verify its consistency over the long term. (authors)

  4. The role of socio-economic status and neighborhood social capital on loneliness among older adults: evidence from the Sant Boi Aging Study.

    Science.gov (United States)

    Domènech-Abella, Joan; Mundó, Jordi; Lara, Elvira; Moneta, Maria Victoria; Haro, Josep Maria; Olaya, Beatriz

    2017-06-23

    The aim of the present study is to analyze the role of age in the association between socio-economic status (SES) and loneliness as well as the role of neighborhood social capital (NSC) in the association between individual social capital and loneliness. Data include a representative population-based sample from Sant Boi de Llobregat (a suburb of Barcelona) of 1124 adults aged 50 and over. Logistic regression models were used to analyze the survey data. Interactions between SES and age, and NSC and individual social capital were explored. Among the poorest older adults, older individuals showed a lower likelihood of loneliness (OR 0.09, 95% CI 0.02, 0.30, p social capital showed a lower likelihood of loneliness (OR 0.36, 95% CI 0.17, 0.73, p social capital after adjusting for covariates. The effect of individual social capital was not significant among individuals living in an area with low NSC. Interventions focusing on low SES middle-aged (50-59 years old) individuals and those aiming to increase NSC could be effective strategies to reduce the prevalence of loneliness in older people.

  5. KUALITAS PRODUK DAN KUALITAS LAYANAN TERHADAP KEPUASAN DAN LOYALITAS NASABAH

    Directory of Open Access Journals (Sweden)

    Kharisma Nawang Sigit

    2017-05-01

    Full Text Available This study described the effect of product quality and service quality on sustomer satisfaction and loyalty. The population in this study was the customers of Kredit Usaha Rakyat at BRI Warungasem. The sampling method used in this research was purposive sampling. The samples in this study were 100 customers in People’s Business Credit (Kredit Usaha Rakyat BRI Batang Branch Unit Warungasem who had already taken at least two time KUR credits. The instrument of answers measurement used was a Likert scale 1-7 alternative answers. Testing instrument used was validity and reliability, and testing the model used was the coefficient of determination and F test (goodness of fit. Testing the hypothesis in this study used t test. Variables used in the study were product quality, service quality, customer satisfaction and loyalty.The results showed that there was the effect on the product quality and customer satisfaction. Service quality affected the customer satisfaction. Product quality affect the customer loyalty. The quality of service had an effect on customer loyalty. Customer satisfaction had an effect on customer loyalty. Penelitian ini menjelaskan pengaruh kualitas produk dan kualitas layanan terhadap kepuasan nasabah dan loyalitas. Populasi pada penelitian ini adalah nasabah Kredit Usaha Rakyat BRI Unit Warungasem. Metode pengambilan sampel yang digunakan dalam penelitian ini adalah purposive sampling. Sampel dalam penelitian ini adalah 100 nasabah Kredit Usaha Rakyat di BRI Cabang Batang Unit Warungasem yang sudah mengambil minimal dua kali kredit KUR.Pengukuran jawaban instrumen menggunakan skala likert 1-7alternatif jawaban. Pengujian instrumen menggunakan validitas dan reliabilitas, pengujian model menggunakan koefisien determinasi, dan uji F (goodness of fit. Pengujian hipotesis dalam penelitian ini menggunakan uji t. Variabel yang digunakan dalam penelitian yaitu Kualitas Produk, kualitas layanan, kepuasan dan loyalitas nasabah. Hasil

  6. GRIYA DAN OMAH Penelusuran Makna dan Signifikasi di Arsitektur Jawa

    Directory of Open Access Journals (Sweden)

    Josef Prijotomo

    1999-01-01

    Full Text Available Terms and names in architecture may sometimes be powerful in exploring history of ideas. Philology and hermeneutics are discipline of knowledge that utilize this notion in a very throgh and critical way. Inspired by those discipline of knowledge, this musing on `Griya' and `Omah' tries to demonstrate that their meaning is not `house' as many still understand them. Rather, both terms understood by the Jawanese as `any building' constructed. Critical assessment upon old documents named `Kawruh Griya' not only supportive for this understanding among the Javanese, but also provide us with a hint on one of ideals of `what a home is' among the Jawanese. The Javanese once had a notion that to dwell in a house is like sheltering under a shady tree. Since `griya' and `omah' may open our musing up to regions and cultures outside Jawa, this paper will limit its musing within the Jawanese. Abstract in Bahasa Indonesia : Kata, sebutan dan istilah yang digunakan dalam arsitektur terkadang memiliki kemampuan untuk membantu dan menjadi bahan kajian sejarah bagi dunia arsitektur. Kajian filologi dan hermeneutika dengan baik telah memanfaatkan kemampuan tersebut. Tanpa harus memaksakan diri untuk mengikuti dengan ketat bidang pengetahuan tersebut, penelusuran atas arti `griya' dan `omah' ini mencoba untuk mengungkap sebagian kecil dari sejarah arsitektur Jawa. Melalui interpretasi-menerangkan (Poespoprodjo 1987: 194-195 atas arti kedua kata tersebut di dalam berbagai naskah Kawruh Griya, keduanya samasekali tidak memiliki arti: `rumah'. Dengan penelusuran ini ditemukan pula petunjuk yang mengarah pada salah satu gagasan orang Jawa tentang rumah yakni `bagaikan berteduh di bawah pohon'. Meskipun kedua kata tersebut dapat membawa penelusuran ini ke wilayah di luar arsitektur dan masyarakat Jawa, harus diakui bahwa penelusuran ini masih dibatasi pada telusuran internal bahasa Jawa, yakni hanya mengkaji kedua kata tersebut di dalam perjalanan kebahasaan bahasa Jawa

  7. Combustion of boron containing compositions

    Energy Technology Data Exchange (ETDEWEB)

    Frolov, Y.; Pivkina, A. [Institute of Chemical Physics, Russian Academy of Science, Moscow (Russian Federation)

    1996-12-31

    Boron is one of the most energetic components for explosives, propellants and for heterogeneous condensed systems in common. The combustion process of mixtures of boron with different oxidizers was studied. The burning rate, concentration combustion limits, the agglomeration and dispersion processes during reaction wave propagation were analysed in the respect of the percolation theory. The linear dependence of the burning rate on the contact surface value was demonstrated. The percolative model for the experimental results explanation is proposed. (authors) 5 refs.

  8. Smoldering Combustion Experiments in Microgravity

    Science.gov (United States)

    Walther, David C.; Fernandez-Pello, A. Carlos; Urban, David L.

    1997-01-01

    The Microgravity Smoldering Combustion (MSC) experiment is part of a study of the smolder characteristics of porous combustible materials in a microgravity environment. Smoldering is a non-flaming form of combustion that takes place in the interior of porous materials and takes place in a number of processes ranging from smoldering of porous insulation materials to high temperature synthesis of metals. The objective of the study is to provide a better understanding of the controlling mechanisms of smolder, both in microgravity and normal-gravity. As with many forms of combustion, gravity affects the availability of oxidizer and transport of heat, and therefore the rate of combustion. Microgravity smolder experiments, in both a quiescent oxidizing environment, and in a forced oxidizing flow have been conducted aboard the NASA Space Shuttle (STS-69 and STS-77 missions) to determine the effect of the ambient oxygen concentration and oxidizer forced flow velocity on smolder combustion in microgravity. The experimental apparatus is contained within the NASA Get Away Special Canister (GAS-CAN) Payload. These two sets of experiments investigate the propagation of smolder along the polyurethane foam sample under both diffusion driven and forced flow driven smoldering. The results of the microgravity experiments are compared with identical ones carried out in normal gravity, and are used to verify present theories of smolder combustion. The results of this study will provide new insights into the smoldering combustion process. Thermocouple histories show that the microgravity smolder reaction temperatures (Ts) and propagation velocities (Us) lie between those of identical normal-gravity upward and downward tests. These observations indicate the effect of buoyancy on the transport of oxidizer to the reaction front.

  9. Lõuka tuuliku restaureerimine / Dan Lukas

    Index Scriptorium Estoniae

    Lukas, Dan

    2005-01-01

    Hiiumaal Pühalepa vallas Vahtrepa külas Lõuka talu maadel asuva pukktuuliku ajaloost, restaureerimise käigust. Teostus: Dan Lukas. Muinsuskaitseline järelevalve: Tõnu Sepp, tema kommentaar. Ill.:pukktuuliku lõiked ja korruste plaanid, 7 värv. fotot

  10. Corner Office: Google's Dan Clancy

    Science.gov (United States)

    Albanese, Andrew Richard; Oder, Norman

    2009-01-01

    This article presents an interview with Dan Clancy, engineering director for Google Book Search. In this interview, Clancy talks about the pending Google Book Search settlement, involving millions of volumes digitized from libraries, which drew a lawsuit from the Association of American Publishers and the Authors Guild. He also discusses pricing,…

  11. Corner Office: Google's Dan Clancy

    Science.gov (United States)

    Albanese, Andrew Richard; Oder, Norman

    2009-01-01

    This article presents an interview with Dan Clancy, engineering director for Google Book Search. In this interview, Clancy talks about the pending Google Book Search settlement, involving millions of volumes digitized from libraries, which drew a lawsuit from the Association of American Publishers and the Authors Guild. He also discusses pricing,…

  12. HUKUM DAN PERUBAHAN MASYARAKAT

    Directory of Open Access Journals (Sweden)

    Antoni Antoni

    2015-05-01

    Full Text Available Abstract: Where there is sugar there must be an ant, or likefish and water, as it were appropriate parable likens the Lawand Society, because where there is society there must be lawswill be needed. Law and society are two sides of which aredifficult to separate, because they will need each other andinfluence each other.ملخص:حیث یوجد السكر یجب أن یكون ھناك نملة، أو مثل السمك والماء، كما انھاكانت مناسبة المثل یشبھ القانون والمجتمع، وذلك لأن عندما یكون ھناك مجتمع یجبأن یكون ھناك وستكون ھناك حاجة القوانین .القانون والمجتمع وجھان لوالتي یصعبفصل، لأنھا سوف نحتاج إلى بعضنا البعض وتؤثر على بعضھا البعض.Kata Kunci: hukum dan perubahan masyarakat

  13. Rotary internal combustion engine

    Energy Technology Data Exchange (ETDEWEB)

    Witkowski, J.

    1989-12-05

    This patent describes an internal combustion engine assembly. It includes: a central rotor means formed with at least one peripheral fuel cavity. The cavity having a first surface defining a thrust surface and a second surface defining a contoured surface; a housing means enclosing the rotor and having an internal wall encircling the rotor. The internal wall being intercepted by at least two recesses defining cylinder means. The housing means and the rotor means being relatively rotatable; piston means individual to each the cylinder means and reciprocable therein; each piton means having a working face complementary to aid contoured surface; and power means for urging the working face into intimate areal contact with the contoured surface to create a first seal means. The housing means having at lest one fuel inlet port, at least one fuel ignition means and at least one exhaust port whereby during the course of a revolution of the rotor means relative to the housing means, the first seal means, the power means, the respective ports, the ignition means and the fuel cavity cooperate to develop fuel compression, fuel ignition and exhaust functions.

  14. Internal combustion engine

    Energy Technology Data Exchange (ETDEWEB)

    Laskaris, M.A.; Broitman, K.; Natale, S.E.

    1991-08-27

    This patent describes improvement in a two-stroke internal combustion engine adapted to run on a diesel or a kerosene type of fuel, and including a piston connected to the crankshaft of the engine to move within a cylinder through a first stroke from a top dead center position to a bottom dead center position and through a second stroke from the bottom dead center position back to the top dead center position. The improvement comprises: means providing a cylinder head at the top end of the engine cylinder in the shape of an open bowl having a generally cup-shaped configuration including a sidewall portion, a spark plug positioned centrally within the bowl at the top end of the cylinder, and means for injecting fuel into the top end of the engine cylinder at a location between the spark plug and the sidewall portion, the fuel injecting means including an injection nozzle having a plurality of nozzle openings therein, the nozzle openings being constructed and arranged to discharge a plurality of plume-like sprays into the top end of the cylinder at a location within the bowl, two of the sprays being directed from the nozzle to diverge and pass along opposite sides of the spark plug, and additional sprays being directed from the nozzle against the sidewall portion or the cylinder head to be deflected therefrom back toward the piston and the spark plug to thereby form a cloud of fuel over the spark plug for good ignition.

  15. Gangguan Fungsi Penghidu dan Pemeriksaannya

    Directory of Open Access Journals (Sweden)

    Effy Huriyati

    2014-01-01

    Full Text Available AbstrakLatar belakang: Fungsi penghidu pada manusia memegang peranan penting. Gangguan penghidu dapat mempengaruhi keselamatan dan kualitas hidup seseorang. Tujuan: Untuk mengetahui jenis gangguan penghidu, penyebab gangguan penghidu, dan pemeriksaannya. Tinjauan Pustaka: Gangguan penghidu dapat berupa anosmia yaitu hilangnya kemampuan penghidu, atau hiposmia yaitu berkurangnya kemampuan penghidu. Gangguan penghidu disebabkan gangguan konduksi, gangguan sensoria dan gangguan neural. Penyakit tersering penyebab gangguan penghidu yaitu rinosinusitis kronis, rinitis alergi, infeksi saluran nafas atas dan trauma kepala. Ada beberapa modalitas pemeriksaan kemosensoris fungsi penghidu diantaranya Tes “Sniffin sticks”. Dengan tes „Sniffin sticks” dapat diketahui ambang penghidu, diskriminasi penghidu dan identifikasi penghidu seseorang. Kesimpulan: Gangguan penghidu memerlukan perhatian khusus. Diantara beberapa modalitas pemeriksaan kemosensoris penghidu, tes “Sniffin sticks” mempunyai beberapa kelebihan.Kata kunci: Gangguan penghidu, anosmia, hiposmia, tes “Sniffin sticks”.AbstractBackground: Olfactory function in humans plays an important role. Olfactory disorders can affect the safety and quality of life. Objective: To determine the type of olfactory disorder, the causes of olfactory disorders, and the examination. Literature Review: Olfactory disorder can be not smell anything or anosmia, and reduced of smell or hyposmia. Olfactory disorders caused by conduction disturbances, neural disturbances and sensoris disturbances. Disease that often causes disturbances of olfactory function is, chronic rhinosinusitis, allergic rhinitis, upper respiratory tract infections and head trauma. There are several modalities to examine chemosensoris smelling function, one of them is “Sniffin sticks” test. This test can examine threshold, discrimination, and identification of smelling. Conclusions: Impaired smelling require special attention

  16. PEMBINAAN DAN PENGEMBANGAN USAHA KECIL

    Directory of Open Access Journals (Sweden)

    Sentot Harman Glendoh

    2001-01-01

    Full Text Available Small business as an economic activity of society on a small scale, has a central role in the economy of Indonesia. Although the economic crisis has created a great disturbance in the live of large and middle-size business, apparently small business continues to function well in the lower levels of the economy. The main role of small business is: 1 use excess labor; 2 as a producer of goods and services at reachable prices for the lower economic levels of society; 3 as a potential producer of foreign exchange because of the success of this type of industry in producing non-oil commodities for export. Remembering that the role of small business is large and has great influence on the lower economic levels of society, it is quite necessary to pay attention to the development of this sector. Abstract in Bahasa Indonesia : Usaha kecil sebagai kegiatan ekonomi rakyat berskala kecil memiliki peran sentral dalam perekonomian Indonesia. Walaupun krisis ekonomi telah memporakporandakan kehidupan bidang usaha besar dan menengah, ternyata usaha kecil tetap tegar dan berjalan marak dikawasan kehidupan ekonomi tingkat bawah. Peran pokok usaha kecil ini adalah: (1 sebagai penyerap tenaga kerja, (2 sebagai penghasil barang dan jasa pada tingkat harga yang terjangkau bagi kebutuhan rakyat banyak yang berpenghasilan rendah, (3 sebagai penghasil devisa negara yang potensial kerena keberhasilannya dalam meproduksi komoditi ekspor non migas. Mengingat peran usaha kecil tersebut sangat besar andilnya bagi negara dan masyarakat kecil dilapisan bawah, maka pembinaan dan pengembangannya sangat perlu diperhatikan. Kata kunci: pembinaan, pengembangan, usaha kecil.

  17. KINERJA DAN EFISIENSI BANK PEMERINTAH (BUMN DAN BUSN YANG GO PUBLIK DI INDONESIA

    Directory of Open Access Journals (Sweden)

    Sugeng Haryanto

    2012-06-01

    Full Text Available Penelitian ini menganalisis kinerja dan tingkat efisiensi bank-bank BUMN dan BUSN yang go Publik di Bursa Efek Indonesia.  Sample penelitian ini mengambil  tiga bank BUMN Bank BNI 46, Bank Mandiri dan Bank BRI  dan tiga bank BUSN (Bank BCA, Bank Niaga dan Bank Panin dengan periode analisis tahun 2005-2011. Varibael yang digunakan meliputi ROA, ROE, LAR. LDR, NPL dan BOPO. Tujuan dari penelitian ini adalah melihat dan menganalisis perbedaan kinerja antara Bank BUMN dan BUSN yang go public di Bursa Efek Indonesia tahun 2005-2011.  Pendekatan pengukuran kinerja yang digunakan adalah Return on Asset (ROA, Return on Equity (ROE dan Loan to Deposit Ratio (LDR, Loan to Asset Ratio (LAR,  dan efisiensi bank. Hasil dari penelitian menunjukkan bahwa 1 Bank-bank nasional, baik itu bank BUMN maupun BUSN menunjukkan kinerja yang semakin baik, 2 tidak terdapat perbedaan yang signifikan antara kinerja bank BUMN dan BUSN untuk variabel ROA, ROE, LAR, LDR, dan BOPO sedangkan variabel NPL yang merupakan indikator risiko kredit menunjukkan adanya perbedaan yang signifikan antara Bank BUMN dan BUSN

  18. AGROFORESTRI UNTUK ADAPTASI DAN MITIGASI PERUBAHAN IKLIM

    Directory of Open Access Journals (Sweden)

    Tigor Butarbutar

    2017-01-01

    Full Text Available Hilangnya tutupan lahan hutan karena konversi hutan untuk pemukiman, perkebunan, pertanian dan kebutuhan untuk pembangunan di sektor lain, telah menyebabkan perubahan pola cuaca/iklim di berbagai tempat. Perubahan iklim dapat diantisipasi dengan mitigasi dan adaptasi. Mitigasi berarti usahausaha pencegahan yang perlu dilakukan, sedangkan adaptasi merupakan kegiatan-kegiatan penyesuaian yang perlu dilakukan untuk dapat hidup dan bertahan dan meningkatkan ketahanan, kelenturan dan mengarahkemigrasikarenakondisiiklimyangberbeda.Agroforestridapatmemitigasidanmengadaptasi perubahaniklim dengan alasan-alasansebagaiberikut: aPencampuranjenis pohonpenghasilkayu,buah dan lain-lain, karena campuran jenis lebih baik dari tanaman murni; b Pencampuran jenis yang didasarkan pada sifat toleransi ( dan , sehingga akan memanfaatkan seluruh cahaya untuk fotosintesis; c Pencampuran perbedaan umur; d Pencampuran berdasarkan perbedaan waktu pemanenan; e Penggabungan nilai ekonomi, sosial dan budaya sehingga perubahan vegetasi dapat berjalan seiring dengan perubahan sosial dan budaya secara berangsur yang dapat disesuaikan dengan perubahan iklim; dan f Dapat digunakan sebagai model untuk memfasilitasi perubahan kelompok vegetasi menjadi kelompok yang baru (adaptasi, seperti teori perubahan vegetasi melalui perladangan berpindah-pindahyangteratur.

  19. INDUSTRIALISASI DAN TANTANGANNYA PADA SEKTOR PENDIDIKAN

    Directory of Open Access Journals (Sweden)

    Arif Unwanullah

    2015-10-01

    Full Text Available Abstrak: Industrialisasi dan Tantangannya pada Sektor Pendidikan. Sumbangan pendidikan dalam perubahan dan pembangunan masa lalu telah bergeser dengan kemajuan teknoekonomi dan komunikasi. Perubahan yang terjadi telah menggeser tatanan kehidupan dan pandangan masyarakat. Materialisme, kapitalisme, efisiensi, dan efektivitas telah menjadi tujuan dan semangat hidup. Pergeseran pandangan masyarakat telah mengubah pula pandangan keberhasilan dan mutu pendidikan, di mana pendidikan diukur dari keberhasilan dalam keterserapan lulusan dalam dunia kerja, oleh karenanya pendidikan dianalisis dari karakteristik sebagai investasi (capital-investment. Pergeseran makna dan tanggung jawab pendidikan mendorong dunia pendidikan melakukan pembaruan dengan alternatif: membangun pembaruan penalaran warganya menuju pemerdekaan dan pendewasaan, pendidikan dilaksanakan secara komprehensif dan bekerjasama dengan semua pihak secara kemitraan, dan membangun visi pendidikan secara komprehensif dan simultan dengan semua pihak. Kata kunci: perubahan sosial, materialistik, modernisasi dan kapitalis Abstract: Industrialization and its education Sector challenges. Contribution of education has shifted with the progress of technology, economy, and communication. The changes have shifted the society's views. Materialism, capitalism, efficiency, and effectiveness have become of interest and enthusiasm for life. The shift has changed society's view, i.e. the view of success and quality of education, in which education is measured from a rate of the absorption of graduates into labor market, therefore education is analyzed from the characteristics of an investment (capital-investment. A shift in meaning and responsibility of education encourages the education sector to create reformation through these following alternatives: creating new thoughts towards liberation and maturation, implementing education comprehensively and cooperating with all parties in partnership, and creating

  20. Twenty-second symposium (international) on combustion

    Energy Technology Data Exchange (ETDEWEB)

    1989-01-01

    The following research areas were discussed at the symposium: coal combustion: carbon burnout, pyrolysis, furnaces, laboratory-scale combustion, and fluidized bed combustion; combustion-generated particulates: soot inception, growth, and soot formation in diffusion flames; engine combustion; turbulent combustion: flames in vortices, fractals and cellular automations, nonpremixed flames, premixed flames, premixed flame structure, and lifted flames; reaction kinetics: hydrocarbon oxidation, free radical chemistry, unsaturated species, aromatics, and nitrogen compounds/pollutant formation; combustion generated NO/sub x/ and SO/sub x/; fires: flame spread, radiation, characterization, and unsteady flames; Laminar flames: structure, opposed-flow combustion, shape, propagation/extinction, and inhibition, oscillations, microgravity; ignition; detonations; dusts; propellants; diagnostics; combustion of drops, sprays, and dispersions, and slurries. Individual projects are processed separately for the data bases. (CBS)

  1. Combustion iron distribution and deposition

    Science.gov (United States)

    Luo, Chao; Mahowald, N.; Bond, T.; Chuang, P. Y.; Artaxo, P.; Siefert, R.; Chen, Y.; Schauer, J.

    2008-03-01

    Iron is hypothesized to be an important micronutrient for ocean biota, thus modulating carbon dioxide uptake by the ocean biological pump. Studies have assumed that atmospheric deposition of iron to the open ocean is predominantly from mineral aerosols. For the first time we model the source, transport, and deposition of iron from combustion sources. Iron is produced in small quantities during fossil fuel burning, incinerator use, and biomass burning. The sources of combustion iron are concentrated in the industrialized regions and biomass burning regions, largely in the tropics. Model results suggest that combustion iron can represent up to 50% of the total iron deposited, but over open ocean regions it is usually less than 5% of the total iron, with the highest values (ocean biogeochemistry the bioavailability of the iron is important, and this is often estimated by the fraction which is soluble (Fe(II)). Previous studies have argued that atmospheric processing of the relatively insoluble Fe(III) occurs to make it more soluble (Fe(II)). Modeled estimates of soluble iron amounts based solely on atmospheric processing as simulated here cannot match the variability in daily averaged in situ concentration measurements in Korea, which is located close to both combustion and dust sources. The best match to the observations is that there are substantial direct emissions of soluble iron from combustion processes. If we assume observed soluble Fe/black carbon ratios in Korea are representative of the whole globe, we obtain the result that deposition of soluble iron from combustion contributes 20-100% of the soluble iron deposition over many ocean regions. This implies that more work should be done refining the emissions and deposition of combustion sources of soluble iron globally.

  2. Combustion Byproducts Recycling Consortium

    Energy Technology Data Exchange (ETDEWEB)

    Paul Ziemkiewicz; Tamara Vandivort; Debra Pflughoeft-Hassett; Y. Paul Chugh; James Hower

    2008-08-31

    The Combustion Byproducts Recycling Consortium (CBRC) program was developed as a focused program to remove and/or minimize the barriers for effective management of over 123 million tons of coal combustion byproducts (CCBs) annually generated in the USA. At the time of launching the CBRC in 1998, about 25% of CCBs were beneficially utilized while the remaining was disposed in on-site or off-site landfills. During the ten (10) year tenure of CBRC (1998-2008), after a critical review, 52 projects were funded nationwide. By region, the East, Midwest, and West had 21, 18, and 13 projects funded, respectively. Almost all projects were cooperative projects involving industry, government, and academia. The CBRC projects, to a large extent, successfully addressed the problems of large-scale utilization of CCBs. A few projects, such as the two Eastern Region projects that addressed the use of fly ash in foundry applications, might be thought of as a somewhat smaller application in comparison to construction and agricultural uses, but as a novel niche use, they set the stage to draw interest that fly ash substitution for Portland cement might not attract. With consideration of the large increase in flue gas desulfurization (FGD) gypsum in response to EPA regulations, agricultural uses of FGD gypsum hold promise for large-scale uses of a product currently directed to the (currently stagnant) home construction market. Outstanding achievements of the program are: (1) The CBRC successfully enhanced professional expertise in the area of CCBs throughout the nation. The enhanced capacity continues to provide technology and information transfer expertise to industry and regulatory agencies. (2) Several technologies were developed that can be used immediately. These include: (a) Use of CCBs for road base and sub-base applications; (b) full-depth, in situ stabilization of gravel roads or highway/pavement construction recycled materials; and (c) fired bricks containing up to 30%-40% F

  3. IMPLEMENTASI KEBIJAKAN PEMUNGUTAN PAJAK BUMI DAN BANGUNAN

    Directory of Open Access Journals (Sweden)

    Arifuddin - Sahabu

    2012-05-01

    Full Text Available ABSTRAKS   Penelitian ini menggunakan metode kualitatif dengan bentuk studi kasus. Pengumpulan data dilakukan dengan menggunakan teknik wawancara, dokumentasi, dan observasi. Analisis data mengunakan metode analisis Miles dan Huberman, dengan melalui tiga prosedur yaitu reduksi data, penyajian data dan menarik kesimpulan/verifikasi. Sedangkan keabsahan menggunakan teknik berdasarkan atas kriteria derajat kepercayaan, keteralihan, ketergantungan, dan kepastian suatu data. Tuntutan menghadapi  implementasi Otonomi Daerah mengandung arti pentingnya Pemerintah Daerah memperhatikan kemampuan “self suporting” dalam bidang keuangan. Sumber pendapatan daerah tidak hanya di peroleh dari Pendapatan Asli Daerah, tetapi juga berupa pemberian bagi hasil dari penerimaan Pemerintah Pusat. Diantara sumber penerimaan tersebut adalah Pajak Bumi dan Bangunan. Dalam Undang-undang Nomor 25 Tahun 1999 Tentang perimbangan keuangan antara Pemerintah Pusat  dan Daerah, diantaranya dijelaskan bahwa sumber penerimaan daerah dalam penyelenggaraan desentralisasi berasal dari dana perimbangan penerimaan Pajak Bumi dan Bangunan disamping pemberian Dana Alokasi Umum dan Alokasi Khusus. Langkah Implementasi dari pelaksanan pemungutan Pajak Bumi dan Bangunan tersebut dilakukan Departemen Keuangan melalui Kantor Pelayanan Pajak Bumi dan Bangunan, sedang Pemerintah daerah menerima pelimpahan penagihan pada Sektor Perkotaan dan Sektor Pedesaan. Meskipun telah ada pelimpahan kewenangan kepada daerah, akan tetapi pelimpahan kewenangan tersebut terbatas pada mekanisme penagihan saja, sedang implementor yang menyangkut masalah administrasi masih berada pada Kantor Pelayan Pajak Bumi dan Bangunan. Kondisi demikian ini ditambah dengan kurangnya koordinasi antara unit organisasi pelaksana menyebabkan setiap tahun terjadi tunggakan. Sebagai sandaran teoritik utama  untuk mendiskripsikan serta menganalisis hambatan-hambatan implementasi kebijakan publik (dalam hal ini pemungutan

  4. TRANSFORMASI ORGANISASIONAL DAN MSDM: HAMBATAN DAN IMPLIKASINYA PADA REKRUTMEN DAN SELEKSI

    Directory of Open Access Journals (Sweden)

    Licen Indahwati Darsono

    2002-01-01

    Full Text Available Rapid change of environment is an external force that causes the organization to transform. Fundamentally, the main purpose of the transformation is to change the organizational structure to be more flexible and competitive with fewer hierarchial levels, managers, and employees. The transformation needs to be radical, causing resistance from the organization's members. Their resistance can cause the transformation to fail, therefore organization must find ways to lessen this resistance. First, organization must learn about the diversity of its members' cultures and values. Second, organization must build its own organizational culture which can support the success of the transformation, by communicating it with the members of the organization. To support organizational culture building efforts, it needs changes in human resources practices, especially recruitment and selection. Abstract in Bahasa Indonesia : Perubahan yang cepat dalam lingkungan merupakan kekuatan eksternal yang mengakibatkan transformasi dalam sebuah organisasi. Pada dasarnya, tujuan utama dari transformasi tersebut adalah merubah struktur organisasi agar menjadi lebih fleksibel dan mampu bersaing, dengan tingkat structural yang sedikit, serta jumlah manajer dan karyawan yang lebih kecil. Transformasi tersebut harus menyeluruh, dan hal ini dapat menyebabkan resistensi dari para anggota organisasi yang memperhambat perubahan tersebut. Resistensi itu bisa menyebabkan perubahan tersebut batal, oleh karena itu organisasi harus mencari jalan untuk mengurangi hambatan-hambatan tersebut. Pertama, organisasi harus belajar keanekaragaman dari budaya dan nilai anggotanya. Kedua, organisasi harus mengembangkan budaya organisasi sendiri melalui komunikasi yang baik dengan anggotanya. Untuk mendukung usaha mengembangkan budaya organisasi, harus ada perubaban pada kebijakan sumber daya manusia, terutama dalam rekrutmen dan seleksi karyawan. Kata kunci: transformasi, resistensi, budaya

  5. VAKSIN DENGUE DAN PERKEMBANGANNYA SAAT INI DAN DI MASA MENDATANG

    Directory of Open Access Journals (Sweden)

    Triwibowo Ambar Garjito

    2012-09-01

    Full Text Available Dengue virus merupakan salah satu virus anggota dari famili Flaviviridae yang sejak tahun 1956 telah dikenal dapat menimbulkan demam dengue maupun demam berdarah dengue (DBD. Penyakit yang ditularkan oleh nyamuk Aedes aegypti ini diperkirakan telah menjangkiti pada selatar 50-100 juta manusia dengan 500.000 kasus di antaranya dalam manifestasi yang ganas yang dikenal sebagai dengue haemorrhagic fever dan dengue shock syndrome dan 25.000 di antaranya berakibat fatal (meninggal. Saat ini pengembangan vaksin merupakan salah satu solusi yang diharapkan dapat menekan penyebaran penyakit tersebut. E (envelope merupakan salah satu bagian dari protein struktural virus yang sangat penting dalam pengembangan vaksin, yaitu sebagai badan yang memproduksi antibodi netralisasi untuk protein. Non-struktural protein l juga telah diketahui sebagai salah satu komponen penting dalam pengembangan vaksin oleh karena kemampuannya untuk dapat diekspresi pada permukaan sel yang diinfeksi yang dapat menjadi target untuk immune cytolisis. Ada dua pendekatan yang digunakan dalam memproduksi suatu vaksin dengue, yaitu: a. Vaksin hidup yang telah dilemahkan (live attenuated vaccine: b. Vaksin hasil rekayasa (engineered vaccine. Penelitian terhadap vaksin DENV baik rekombinan maupun non-rekombinan yang didasarkan pada uji virus telah dilakukan secara terus-menerus baik pada monyet dan manusia. Sampai saat ini telah dikembangkan sejumlah kandidat vaksin DENV yang berdasar pada tetravalent virus dengue, yaitu a. vaksin konvensional, b. vaksin dengue rekombinan berdasar pada flavivirus, c. vaksin intertypic chimeric, d. vaksin chimerivac, e. vaksin dengue rekombinan menggunakan vector non-ftavivirus dan f. vector adenovirus. Namun demikian, sampai sekarang belum ada vaksin yang siap digunakan untuk menangkal infeksi ke empat serotype virus dengue, sehingga masih diharapkan untuk pengembangan virus lebih lanjut.   Kata kunci: Aedes aegypti, dengue virus, vaksin dengue.

  6. Muhammad sebagai pemimpin agama dan negara periode Makkah dan Madinah

    Directory of Open Access Journals (Sweden)

    Ummu Zakiyah Maulidah

    2014-07-01

    Full Text Available Muhammad was born in Mecca between AD 570 and 580 in the Banu Hashims,a reputable family of Quraysh. In Mecca, Muhammad is portrayed as a privatecitizen, as he had to limit himself and adapt his behavior to face the situationduring jahiliyyah era. While, in Medina he governed the community and guidedthem in religious life. His arrival in Medina has significant contribution towardhis role as political leader. His power in this city had protected himself and hisfollowers from violent opposition of the Quraysh. The doctrines he employedin politics were inseparable from the religious values rooted from the Quran.Through his innovation and skillful diplomacy, he had converted the peopleof Mecca and Medina into brighter Arab civilization. Such a positive changereflected his monumental accomplishment for the people.Muhammad lahir di kota Makkah antara tahun 570 sampai 580 Masehi dikeluarga Bani Hasyim, suku Quraisy terkemuka di Arab. Di kota Makkah,Muhammad dianggap sebagai masyarakat biasa, sebab ia harus membatasidirinya dan menyesuaikan prilakunya dalam menghadapi keadaan yangterjadi pada zaman jahiliyyah. Sedangkan di Madinah, ia dianggap sebagaipemimpin masyarakat dan menjadi pembimbing umat dalam hidup beragama.Kedatangannya di Madinah juga memberikan konstribusi besar pada perannyasebagai pemimpin politik. Kekuasaan di kota ini sangat membantu dirinya danpara pengikutnya dari kerasnya kelompok oposisi Quraisy. Doktin-doktrin yangdigunakan Muhammad dalam dunia politik juga tidak lepas dari nilai-nilaiagama yang bersumber dari al Quran. Dengan kreatifitas dan inovasinya dalammemimpin, Muhammad mampu mengarahkan masyarakat Makkah dan Madinah menuju kebangkitan peradaban bangsa Arab yang lebih cemerlang.Kondisi yang semakin membaik tersebut, tidak lain merupakan sebuah karyadan jasa monumental yang telah diukir oleh Muhammad untuk umatnya.

  7. Subgrid Combustion Modeling for the Next Generation National Combustion Code

    Science.gov (United States)

    Menon, Suresh; Sankaran, Vaidyanathan; Stone, Christopher

    2003-01-01

    In the first year of this research, a subgrid turbulent mixing and combustion methodology developed earlier at Georgia Tech has been provided to researchers at NASA/GRC for incorporation into the next generation National Combustion Code (called NCCLES hereafter). A key feature of this approach is that scalar mixing and combustion processes are simulated within the LES grid using a stochastic 1D model. The subgrid simulation approach recovers locally molecular diffusion and reaction kinetics exactly without requiring closure and thus, provides an attractive feature to simulate complex, highly turbulent reacting flows of interest. Data acquisition algorithms and statistical analysis strategies and routines to analyze NCCLES results have also been provided to NASA/GRC. The overall goal of this research is to systematically develop and implement LES capability into the current NCC. For this purpose, issues regarding initialization and running LES are also addressed in the collaborative effort. In parallel to this technology transfer effort (that is continuously on going), research has also been underway at Georgia Tech to enhance the LES capability to tackle more complex flows. In particular, subgrid scalar mixing and combustion method has been evaluated in three distinctly different flow field in order to demonstrate its generality: (a) Flame-Turbulence Interactions using premixed combustion, (b) Spatially evolving supersonic mixing layers, and (c) Temporal single and two-phase mixing layers. The configurations chosen are such that they can be implemented in NCCLES and used to evaluate the ability of the new code. Future development and validation will be in spray combustion in gas turbine engine and supersonic scalar mixing.

  8. KONTEKS DAN KONSTRUKSI SOSIAL MENGENAI KEMATIAN ELEKTIF ( EUTHANASIA ∗

    Directory of Open Access Journals (Sweden)

    Helly Prajitno Soetjipto

    2015-09-01

    konteks sosial dan konstruksi sosial kematian. Euthanasia didiskusikan di dalam suatu kerangka pikir yang mencoba memberi perhatian kepada hal-hal yang kontekstual dan interpretatif fenomena sosial suatu proses kematian dan kejadian kematian

  9. PERJANJIAN SEWA GUNA USAHA ANTARA LESSEE DAN LESSOR

    Directory of Open Access Journals (Sweden)

    Aprilianti Aprilianti

    2014-03-01

    Full Text Available Perjanjian sewa guna usaha (leasing yang diadakan oleh Lessor dan Lesseen dilakukan secara tertulis dalam bentuk perjanjian standar. Isi perjanjian tersebut ditentukan oleh jenis dari leasing itu sendiri dan hubungan hukum (hak dan kewajiban timbal balik antara Lessor dan Lessee. Bagi Lessor, hak dan kewajibannya adalah memperoleh pembayaran sebagai imbalan jasa dan menyerahkan barang modal kepada Lessee. Sedangkan hak dan kewajiban Lessee adalah meperoleh kegunaan dari barang modal dan membayar sewa secara berkala. Tidak dipenuhinya hak dan kewajiban masing-masing pihak maka dapat disebut wanprestasi. Perjanjian akan berakhir jika hak dan kewajiban Lessor dan Lessee telah dilaksanakan sesuai dengan perjanjian. Kata Kunci: Leasing, Lessor, Lessee, hak dan kewajiban.

  10. Turbulent Combustion in SDF Explosions

    Energy Technology Data Exchange (ETDEWEB)

    Kuhl, A L; Bell, J B; Beckner, V E

    2009-11-12

    A heterogeneous continuum model is proposed to describe the dispersion and combustion of an aluminum particle cloud in an explosion. It combines the gas-dynamic conservation laws for the gas phase with a continuum model for the dispersed phase, as formulated by Nigmatulin. Inter-phase mass, momentum and energy exchange are prescribed by phenomenological models. It incorporates a combustion model based on the mass conservation laws for fuel, air and products; source/sink terms are treated in the fast-chemistry limit appropriate for such gasdynamic fields, along with a model for mass transfer from the particle phase to the gas. The model takes into account both the afterburning of the detonation products of the C-4 booster with air, and the combustion of the Al particles with air. The model equations were integrated by high-order Godunov schemes for both the gas and particle phases. Numerical simulations of the explosion fields from 1.5-g Shock-Dispersed-Fuel (SDF) charge in a 6.6 liter calorimeter were used to validate the combustion model. Then the model was applied to 10-kg Al-SDF explosions in a an unconfined height-of-burst explosion. Computed pressure histories are compared with measured waveforms. Differences are caused by physical-chemical kinetic effects of particle combustion which induce ignition delays in the initial reactive blast wave and quenching of reactions at late times. Current simulations give initial insights into such modeling issues.

  11. Explosion limits for combustible gases

    Institute of Scientific and Technical Information of China (English)

    TONG Min-ming; WU Guo-qing; HAO Ji-fei; DAI Xin-lian

    2009-01-01

    Combustible gases in coal mines are composed of methane, hydrogen, some multi-carbon alkane gases and other gases. Based on a numerical calculation, the explosion limits of combustible gases were studied, showing that these limits are related to the concentrations of different components in the mixture. With an increase of C4H10 and C6H14, the Lower ExplosionLimit (LEL) and Upper Explosion-Limit (UEL) of a combustible gas mixture will decrease clearly. For every 0.1% increase in C4H10 and C6H14, the LEL decreases by about 0.19% and the UEL by about 0.3%. The results also prove that, by increasing the amount of H2, the UEL of a combustible gas mixture will increase considerably. If the level of H2 increases by 0.1%, the UEL will increase by about 0.3%. However, H2 has only a small effect on the LEL of the combustible gas mixture. Our study provides a theoretical foundation for judging the explosion risk of an explosive gas mixture in mines.

  12. Pembuatan Dan Karakterisasi Papan Partikel Peredam Suara Dari Campuran Resin Poliester Dan Jerami Padi

    OpenAIRE

    Marjuki, Ismail

    2013-01-01

    060802033 Telah dilakukan penelitian papan partikel dari jerami padi yang direaksikan dengan polyester tak jenuh yukalac 157 BQTN ? EX menggunakan katalis mepoxe. Papan partikel ini dibuat dengan proses pencampuran dengan perbandingan antara poliester dan jerami padi adalah 30:70%; 35:65%; 40:60%; 45:55%; dan 50:50%, yang dilanjutkan dengan pengempaan. Karakterisasi dan analisa yang dilakukan menunjukkan bahwa sifat mekanik tegangan optimum pada campuran 50:50 antara polyester dan jerami p...

  13. KONSEP WANUA DAN PALILI DI KONFEDERASI AJATAPPARENG: SEJARAH DAN BUDAYA POLITIK ORANG BUGIS DI SULAWESI SELATAN

    OpenAIRE

    Abd. Latif

    2014-01-01

    Kajian ini akan mendiskusikan tentang konsep wanua dan palili dalam struktur kerajaan-kerajaan yang tergabung dalam Konfederasi Ajatappareng di Sulawesi Selatan. Wanua dan palili adalah dua istilah yang digunakan oleh kerajaan pusat terhadap daerah bawahannya. Pertanyaannya, mengapa ada daerah bawahan yang disebut wanua dan yang lainnya disebut palili. Apakah kriteria yang mesti dipunyai satu daerah untuk disebut sebagai wanua dan apakah pula kriteria yang mesti dipunyai satu daerah untuk dis...

  14. Analisis Kesesuaian dan Daya Dukung untuk Wisata Pantai dan Snorkeling di Pulau Hoga, Kabupaten Wakatobi.

    OpenAIRE

    Ahmad, Bahar

    2014-01-01

    Kawasan wisata bahari agar dapat dimanfaatkan secara berkelanjutan maka pemanfaatan yang dilakukan harus berkesesuaian dengan kondisi dan daya dukung kawasan. Penelitian ini bertujuan untuk menganalisis kesesuaian dan daya dukung untuk wisata pantai dan snorkeling di Pulau Hoga Kabupaten Wakatobi. Data yang digunakan dalam penelitian ini menggunakan data primer dan sekunder. Pengumpulan data primer menggunakan metode survei lapangan, sedangkan data sekunder diperoleh dari Badan Pusat Statis...

  15. KORUPSI DAN PELANGGARAN HAK EKONOMI, SOSIAL DAN BUDAYA DI INDONESIA

    Directory of Open Access Journals (Sweden)

    Robby Darwis Nasution

    2016-02-01

    Full Text Available Korupsi merupakan budaya yang sudah lumrah terjadi di Indonesia, dalam keseharian perpolitikan di Indonesia bahkan tidak akan lepas dari aktifitas korupsi dimana pada kenyataannya korupsi sendiri akan berdampak sistemik bukan hanya berdapmapa kepada kemakmuran Negara tetapi juga berdampak kepada kesejahteraan masyarakat Indonesia. Kesejahteraan Masyarakat sesungguhnya dapat dilihat dari tingkat pemenuhan hak EKOSOB (Ekonomi, Sosial dan Budaya, ketiga poin tersebut merupakan bagian kecil indikator kesejahteraan rakyat. Bersama-sama dengan Hak Sipil, hak ekosob telah diakui secara internasional sebagai bagian dari the international bill of human rights. Kerangka hukumnya menjadi semakin jelas setelah hak-hak tersebut dituangkan dalam perjanjian multilateral yang tertuang dalam Covenan on Economic, Social and Cultural Rights (selanjutnya disingkat CESCR, yang disahkan oleh Majelis Umum PBB pada tahun 1966 sebagai pelaksanaan dari prinsip-prinsip yang dimuat dalam DUHAM 1948. Kewenangan negara yang dalam hal ini adalah pemerintah untuk menjamin hak-hak ekonomi, sosial dan budaya di indonesia dirasa tidak memenuhi hasil yang memadai sehingga dapat dilihat dengan masih banyaknya pengangguran, kemiskinan, dan rendahnya tingkat pendidikan warga negara. Selain itu, tingkat korupsi di Indonesia masih sangat tinggi dibanding negara-negara lain yang menyebabkan tingkat pelanggaran hak EKOSOB di Indonesia masih sangat tinggi.

  16. New Combustion Regimes and Kinetic Studies of Plasma Assisted Combustion

    Science.gov (United States)

    2012-11-01

    Tasks 8 and 9: Kinetic model validation) Today’s Presentation 2. Multispecies diagnostics in a flow reactor with Mid-IR and molecular beam mass...S-Curve Competition between low T RO2 kinetics high T chain branching reactions 0.00 0.02 0.04 0.06 0.08 0.10 0.12 1x10 5 2x10 5 3x10 5 4x10...in Plasma assisted combustion • LTC in turbulent combustion at engine time scales 0-D modeling of DME /O2/He (0.03/0.1/0.896) ignition, P = 72

  17. KEBEBASAN BERAGAMA DAN NORMA-NORMANYA

    Directory of Open Access Journals (Sweden)

    Abdillah Halim

    2013-04-01

      Abstrak Perdebatan tidak berkesudahan terus mewarnai perbincangan dan praktek kebebasan beragama, terutama mengenai kata “kebebasan” yang dilekatkan pada agama dan kepercayaan. Jika “kebebasan” dimaknai sebagai kemerdekaan, apa lantas berarti tidak adanya batasan terhadap kemerdekaan tersebut, dalam arti bahwa kebebasan tersebut bersifat mutlak. Atau barangkali “kebebasan” di sini dimaknai sebagai kebebasan relatif yang membuka kemungkinan perumusan definisi dan ruang lingkup yang jelas. Penulis berpandangan bahwa kebebasan beragama bukan kebebasan mutlak yang tidak menuntut pendefinisian, perumusan ruang-lingkup serta norma norma, dan pengaturan. Kebebasan mutlak pada taraf yang demikian bukan kebebasan yang bermakna sebenarnya, namun dapat berarti sebuah keadaan anarki dan anomi. Kebebasan beragama adalah kebebasan relatif yang menuntut adanya penjelasan tentang definisi, ruang lingkup, norma-norma, dan batasan-batasannya.

  18. Persebaran Layanan dan Infrastruktur Telekomunikasi Provinsi Papua

    Directory of Open Access Journals (Sweden)

    Prajna Deshanta Ibnugraha

    2014-05-01

    Full Text Available Layanan dan infrastruktur telekomunikasi merupakan bagian penting dari kehidupan modern karena hampir di segala bidang membutuhkan hal tersebut seperti pendidikan, pemerintahan, ekonomi dan sebagainya. Oleh karena pentingnya sektor telekomunikasi di Indonesia sebagai negara kepulauan maka perlu evaluasi tentang penyebaran layanan dan infrastrukturnya selain dilihat dari sisi fungsional dan perkembangan teknologinya. Provinsi Papua adalah provinsi terbesar di Indonesia namun justru memiliki layanan telekomunikasi yang paling sedikit dan terbatas. Demikian pula untuk penyebaran layanan ke kabupaten maupun ke distrik (kecamatan masih belum merata. Hal tersebut terbukti dari laporan hasil distribusi pita frekuensi yang hanya 1,5% untuk kawasan Maluku dan Papua serta kerapatan layanan tiap kabupaten yang ditunjukkan pada hasil penelitian ini.

  19. Peningkatan Nilai Kalor Biomassa Kotoran Kuda dengan Metode Densifikasi dan Thermolisis

    Directory of Open Access Journals (Sweden)

    I Gede Bawa Susana

    2009-01-01

    Full Text Available Direct combustion of horse dung as an alternative fuel has caused a lot of smoke and dust. Its efficiency and heating value were low. To improve its properties, the conversion method (densification and thermolysis can be applied to increase the biomass heating value of the horse dung. The densification process was done using a mixture of starch and horse dung with the following ratio 1:3; 1:5; 1:7; 1:10. The results of the horse dung biomass then being processed by thermolysis (pyrolysis using an oven with constant heating temperature and holding time, and with the addition of inert gas. Heating temperature and holding time are 300oC and 2 hours respectively. The results of testing conducted on the samples showed that the conversion of biomass horse dung in densification and thermolisis/pyrolysis were able to increase their heating value. The biomass briquettes with the ratio 1:10, were produce the highest heating value (dry heating value i.e. 4708,775 kcal/kg. While bio-charcoal briquettes with ratio1:10 (thermolysis/pyrolysis results with the addition of inert gas, their highest heating value was 5002,791 kcal/kg. Abstract in Bahasa Indonesia: Proses pembakaran langsung kotoran kuda yang digunakan sebagai bahan bakar alternatif memiliki kekurangan seperti asap yang banyak, debunya yang dapat mengganggu pernapasan, efisiensi dan nilai kalor yang cukup rendah. Oleh karena itu diterapkan metode konversi, yaitu densifikasi dan thermolisis untuk meningkatkan nilai kalor biomassa kotoran kuda. Untuk proses densifikasi digunakan campuran kanji dan kotoran kuda dengan komposisi 1:3, 1:5, 1:7, 1:10. Hasil densifikasi biomassa kotoran kuda kemudian diproses secara thermolisis (pirolisis menggunakan oven pemanas dengan suhu pemanasan dan waktu penahanan (holding time yang konstan, yaitu 300oC dan 2 jam, serta perlakuan dengan gas inert. Hasil pengujian yang dilakukan pada sampel, didapatkan bahwa konversi biomassa kotoran kuda secara densifikasi dan

  20. MANAJEMEN BIMBINGAN DAN KONSELING BERBASIS PERMENDIKBUD NOMOR 111 TAHUN 2014

    Directory of Open Access Journals (Sweden)

    Edris Zamroni

    2015-11-01

    Full Text Available Manajemen bimbingan dan konseling adalah segala upaya atau cara yang digunakan  untuk mendayagunakan secara optimal semua komponen atau sumber daya (tenaga, dana, sarana-prasarana dan sistem informasi berupa himpunan data bimbingan dan konseling untuk menyelenggarakan pelayanan bimbingan dan konseling dalam rangka mencapai tujuan yang telah ditentukan. Permendikbud Nomor 111 Tahun 2014 diterbitkan untuk menjadi acuan baru pelaksanaan tata kelola bimbingan dan konseling mulai dari planning, organizing, staffing, leading dan controlling.

  1. Imunopatogenesis Treponema pallidum dan Pemeriksaan Serologi

    OpenAIRE

    Efrida ,; Elvinawaty .

    2014-01-01

    AbstrakSifilis adalah penyakit menular seksual yang sangat infeksius, disebabkan oleh bakteri berbentuk spiral, Treponema pallidum subspesies pallidum. Penyebaran sifilis di dunia telah menjadi masalah kesehatan yang besar dengan jumlah kasus 12 juta pertahun. Infeksi sifilis dibagi menjadi sifilis stadium dini dan lanjut. Sifilis stadium dini terbagi menjadi sifilis primer, sekunder, dan laten dini. Sifilis stadium lanjut termasuk sifilis tersier (gumatous, sifilis kardiovaskular dan neurosi...

  2. Manifestasi Kehamilan Di Rongga Mulut Dan Perawatannya

    OpenAIRE

    Fatimah

    2008-01-01

    Kehamilan merupakan sebuah proses fisiologis yang melibatkan banyak sistem dalam tubuh dan mengakibatkan terjadinya perubahan pada sistem baik secara anatomis maupun fisiologis seperti pada sistem reproduksi, endokrin, sirkulasi pencernaan dan juga rongga mulut. Manifestasi kehamilan di rongga mulut merupakan suatu kondisi yang sering tetjadi, baik pada gigi maupun pada jaringan di sekitamya. Hal ini dapat terlihat dan tingginya tingkat karies, erosi enamel, terjadinya gingivitis kehamila...

  3. Perkembangan Pendidikan Meunasah dan Dayah di Aceh

    OpenAIRE

    Mujianto Solichin

    2015-01-01

    Meunasah dan Dayah dalam masa perjalanannya tumbuh seiring perkembangan kerajaan-kerajaan Islam di Aceh yang memiliki peran strategis dalam pembentukan kebudayaan Islam di wilayah kekuasaan mereka masing-masing. Ini membuktikan bahwa kerajaan-kerajaan Melayu baik di Malaka (Malaysia) maupun di Aceh (Nangroe Aceh Darussalam) memiliki jaringan arkeologi sejarah kebudayaan dan peradaban yang terbentuk berdasarkan motivasi agama dan menjadikan tradisi Melayu sebagai identitas pemersatu mereka. Ke...

  4. KEBEBASAN BERAGAMA DAN NORMA-NORMANYA

    OpenAIRE

    Abdillah Halim

    2013-01-01

    KEBEBASAN BERAGAMA DAN NORMA-NORMANYA Abdillah Halim Jurusan Syariah, Sekolah Tinggi Agama Islam (STAI) Ngawi   Abstrak Perdebatan tidak berkesudahan terus mewarnai perbincangan dan praktek kebebasan beragama, terutama mengenai kata “kebebasan” yang dilekatkan pada agama dan kepercayaan. Jika “kebebasan” dimaknai sebagai kemerdekaan, apa lantas berarti tidak adanya batasan terhadap kemerdekaan tersebut, dalam arti bahwa kebebasan tersebut bersifat mutlak. Atau barangkali “ke...

  5. A comprehensive fractal char combustion model☆

    Institute of Scientific and Technical Information of China (English)

    Yuting Liu; Rong He

    2016-01-01

    The char combustion mechanisms were analyzed and a comprehensive fractal char combustion model was developed to give a better understanding and better predictions of the char combustion characteristics. Most of the complex factors affecting the char combustion were included, such as the coupling effects between the pore diffusion and the chemical reactions, the evolution of the char pore structures and the variation of the apparent reaction order during combustion, the CO/CO2 ratio in the combustion products and the correction for oxy-char combustion. Eleven different chars were then combusted in two drop tube furnaces with the conversions of the partly burned char samples measured by thermogravimetric analysis. The combustion processes of these chars were simulated with the predicted char conversions matching very well with the measured data which shows that this char combustion model has good accuracy. The apparent reaction order of the char combustion decreases, stabilizes and then increases during the combustion process. The combustion rates in the oxy-mode are general y slower than in the air-mode and the effect of the char-CO2 gasification reac-tion becomes obvious only when the temperature is relatively high and the O2 concentration is relatively low.

  6. Bahasa Roh: Apa dan Bagaimana?

    Directory of Open Access Journals (Sweden)

    Hermanto Suanglangi

    2005-04-01

    Full Text Available Apakah itu glossalalia? Glossalalia adalah adalah kata 1.ang dibangun daridtra kata Cerika, yaitu " glossa" yang berarti bahasa atau lidah dan "lalia"artinva pembicaraan, perkataan. Sehingga "glossalalia" adalah suatu pembicaraan dengan lidah, atau perkataan denganlidah. Dari istilah inilah maka orang biasa menyebutnya dengan bahasa roh dan bahasa lidah, di mana bahasa roh, atau bahasa lidah adalah semacam bahasa yang dengan kemampuan Roh Kudus orang dapat mengucapkannya. Baik dalam Korintus maupun dalam Kisah Para Rasul, sama-sama disebutbahasa roh karena keduanya semacam bahasa yang diucapkan dengan kemampuan dari Roh yang sama yaitu Roh Kudus.

  7. Novel Active Combustion Control Valve

    Science.gov (United States)

    Caspermeyer, Matt

    2014-01-01

    This project presents an innovative solution for active combustion control. Relative to the state of the art, this concept provides frequency modulation (greater than 1,000 Hz) in combination with high-amplitude modulation (in excess of 30 percent flow) and can be adapted to a large range of fuel injector sizes. Existing valves often have low flow modulation strength. To achieve higher flow modulation requires excessively large valves or too much electrical power to be practical. This active combustion control valve (ACCV) has high-frequency and -amplitude modulation, consumes low electrical power, is closely coupled with the fuel injector for modulation strength, and is practical in size and weight. By mitigating combustion instabilities at higher frequencies than have been previously achieved (approximately 1,000 Hz), this new technology enables gas turbines to run at operating points that produce lower emissions and higher performance.

  8. Modélisation des conséquences possibles de la future demande bioénergétique mondiale pour le bois et les forêts en France

    Science.gov (United States)

    Joseph Buongiorno; Ronald Raunikar; Shusuai Zhu

    2011-01-01

    L’accroissement de la demande mondiale et du coût correspondant de l’énergie a conduit à de nombreuses propositions pour augmenter l’utilisation de la biomasse renouvelable. Une étude récente (Raunikar et al., 2010) a examiné les conséquences mondiales pour le bois et pour les forêts de la demande en bioénergie impliquée par les scénarios du Groupe d’experts...

  9. Les Gorges de Trévans dans le front subalpin – Un site exceptionnel des Alpes de Haute-Provence

    Directory of Open Access Journals (Sweden)

    Jean Nicod

    2011-10-01

    Full Text Available Les canyons de Trévans sont incisés dans des unités calcaires jurassiques, dans la zone frontale subalpine, proche du piémont de Valensole. Ces reliefs sont en rapport avec les phases néotectoniques. Ce secteur fait principalement partie de la forêt domaniale du Montdenier, avec des écosystèmes montagnards et supra-méditerranéens, bois de hêtres et de chênes pubescents, large extension des brousses et d'importants reboisements en pins noirs. Les hautes surfaces conservent des traces d'un ancien aplanissement et des sols résiduels paléokarstiques. Sur les pentes, sous des escarpements démembrés, les éboulis et convois de blocs témoignent des processus périglaciaires hérités et, localement, des évènements séismiques. De nombreux processus dynamiques s'observent dans les canyons : éboulements provenant des parois affectées des effets de détente, coups de gouge et marmites de géant dans leur fond excavé par les écoulements turbulents dans les cascades… et le Pont de Tuf.The canyon system of Trevans has cut the blocks of the jurassic limestones, in subalpine over thrust front, near the Valensole piedmont. These landforms are in relationship with the neotectonic movements. This area belongs to the State Forest of Montdenier, woodland of various mountain and supra-mediterranean ecosystems, with beeches and white oaks Quercus pubescens, large extent of bush and important reforestation in black pines (Pinus nigra. The high surfaces preserve some relics of the old planation and paleokarstic forms and residual soils. On the slopes, under the break-up escarpments, the screes and landslides give the part of the periglacial processes and, locally, of the seismic events. Numerous dynamic processes occur in the canyons: rock-slides, in relationship with open fractures, scallops and pot-holes in the bottom excavated by the turbulent flows in the waterfalls of the creeks and, only case, a travertine bridge.

  10. KOMPLIKASI, PENCEGAHAN DAN PENANGANAN EKSTRAVASASI AGEN KEMOTERAPI

    Directory of Open Access Journals (Sweden)

    I G A Mirah K

    2012-12-01

    Full Text Available Ekstravasasi agen kemoterapi ke jaringan sekitarnya merupakan kecelakaan yangdapat menyebabkan kerusakan jaringan progresif ireversibel dalam hitungan jamsampai hari. Manifestasi klinis ekstravasasi berupa nyeri, edema, eritema, danindurasi yang kemudian berkembang menjadi ulkus dan eschar hitam dankerusakan jaringan yang mendasarinya. Pencegahan terjadinya ekstravasasi dapatdilakukan dengan menggunakan pembuluh darah yang paten dan dengan aliranyang cepat dan tetap memperhatikan keluhan yang disampaikan pasien. Setiaptenaga kesehatan yang akan menangani pasien kanker dengan kemoterapi, dituntutmemiliki pengetahuan mengenai ekstravasasi agen kemoterapi yang bergunadalam meningkatkan pelayanan pada pasien dan mengurangi morbiditas.

  11. Sistem Pengukur Suhu dan Kelembaban Ruang Server

    Directory of Open Access Journals (Sweden)

    Muhammad Fahmi Awaj

    2014-01-01

    Full Text Available Makalah ini membahas tentang perancangan sistem pengukur suhu dan kelembaban ruang server yang dapat meningkatkan efisiensi daya listrik dengan menggunakan arduino. Sistem terdiri dari sensor DHT 11 yang berfungsi untuk mengambil data berupa suhu dan kelembaban ruang server kemudian ditampilkan dalam LCD 16x2. Data suhu dan kelembaban ditampilkan juga ke dalam website dengan menggunakan IP address tertentu yang sebelumnya board arduino telah terhubung dengan ethernet shield. Suhu yang melebihi 270C akan menyalakan relay dan kipas serta sistem akan mengirim peringatan sms secara otomatis kepada administrator ruang server melalui sistem sms secara periodik hanya setiap tiga detik. Sistem peringatan sms akan berhenti jika suhu kurang 270C.

  12. KECEMASAN DAN STRATEGI COPING WARIA PELACUR

    Directory of Open Access Journals (Sweden)

    Haris Herdiansyah

    2007-05-01

    Full Text Available Dunia pelacuran adalah penuh dengan tekanan, ancaman dan hal negatif cacat yang menyebabkan ketertarikan kepada pelacur oleh karena itu mendorong pelacur untuk menciptakan strategi menghadapi cukup untuk menghadapi apa yang rasa mereka . Tujuan dari studi ini akan meliputi ke luar ketertarikan dan strategi pelacur yang menghadapi transgender di tiga lingkungan sosial berbeda termasuk dalam keluarga, masyarakat dan “ cebongan” ( tempat di mana pelacur bekerja. Ini adalah suatu riset kualitatif. Karena alat pengumpulan data adalah wawancara, dan pengamatan. Studi ini menggunakan purposive sampling. Ada 3 subjek dan 4 orang informan. Untuk menganalisis data menggunakan model interaktif dari Miles & Huberman yang terdiri dari 3 langkah, yaitu reduksi data, menampilkan data dan kesimpulan serta verifikasi. Hasil dari penelitian ini, banyak kecemasan yang dialami oleh waria pelacur yang datang dari lingkungan yang berbeda-beda. Dari keluarga misalnya, merupakan sumber kecemasan tertinggi, ketika keluarga waria mengetahui profesi mereka. Sumber lain berasal dari pengucilan oleh masyarakat dan mucikari, penangkapan oleh polisi dan preman, persaingan antar pelacur dan kekerasan dari pengguna mereka di “cebongan”

  13. KONTEKTUALISASI DAN (KEMUNGKINAN KONSEKUENSINYA BAGI PSIKOLOGI

    Directory of Open Access Journals (Sweden)

    Prof. Supratiknya

    2015-09-01

    jaran di perguruan tinggi seperti kita kenal sekarang (selanjutnya disebut psikologi, lahir di Jerman pada penghujung abad ke‐19. Selanjutnya psikologi berkembang pesat di Amerika Utara khususnya Amerika Serikat dan negara‐negara lain di Eropa yang lebih dulu mengalami industrialisasi khususnya di Eropa Barat. 1 Alhasil, paling tidak sampai dasawarsa 1980‐an perkembangan dan persebaran psikologi di tingkat global ditandai oleh ketimpangan di antara apa yang oleh Moghaddam (1987 disebut tiga dunia tempat psikologi dikembangkan dan dipraktekkan, disimak antara lain berdasarkan besarnya produksi pengetahuan psikologis yang disebarluaskan melalui penyelenggaraan pendidikan tinggi psikologi maupun lewat publikasi ilmiah berupa baik berkala maupun buku rujukan dan buku teks.

  14. TASAWUF DAN TANTANGAN PERUBAHAN SOSIAL

    Directory of Open Access Journals (Sweden)

    Yusno Abdullah Otta

    2010-12-01

    Full Text Available Abstract: Sufism in the eras of globalization and information often faces considerable challenges. The function and role of religion in modern life have in some aspects diminished, including sufism because it is claimed to have played no or less role in resolving problems nor stimulating social change. As one of Islamic traditions, sufism makes ihsan as its essential teaching. By this concept, sufism encourages humans to pray to God wholeheartedly. Sufism is now required to show its own existence and function by making fundamental contribution for modern life, an era which differ socio-culturally from the one when sufism firstly emerged. Sufism thus needs to adapt itself to the changes in the era of information and globalization so that it will remain relevant and suitable for human progress. Sufism needs to release itself from its exclusivism and to avoid being trapped in its own logic, namely speculative-trancendentalism Abstrak: Tasawuf di era globalisasi dan informasi seperti saat ini tengah menghadapi tantangan yang sangat berat. Kehidupan modern sudah sampai pada taraf tidak lagi mempercayai fungsi dan peran agama, termasuk di dalamnya tasawuf, sebagai ‘sesuatu’ yang dapat memberikan solusi bagi perubahan sosial. Sebagai manifestasi paripurna dari ajaran Islam, tasawuf berintikan pada konsep Ihsān yang mengajarkan untuk beribadah kepada Sang Pencipta secara ikhlas. Untuk menunjukkan eksistensinya, tasawuf dituntut peran aktifnya secara konstruktif-solutif terhadap berbagai kebutuhan manusia modern yang amat berbeda dengan setting maupun struktur masyarakat pada saat tasawuf “dilahirkan” pada zamannya. Tasawuf dituntut untuk memerlukan “baju” baru di era informasi yang kerap berubah ini, agar tetap realible dan suitable dengan kemajuan zaman. Hal itu dapat dilakukan dengan berusaha “keluar” dari eksklusifismenya dengan meminjam tradisi filsafat analitik pasca positivisme dan tradisi eksistensialis serta dinamika filsafat

  15. Analisis Kinerja EIGRP dan OSPF pada Topologi Ring dan Mesh

    Directory of Open Access Journals (Sweden)

    DWI ARYANTA

    2016-02-01

    Full Text Available ABSTRAK EIGRP (Enhanced Interior Gateway Routing Protocol dan OSPF (Open Shortest Path Fisrt adalah routing protokol yang banyak digunakan pada suatu jaringan komputer. EIGRP hanya dapat digunakan pada perangkat Merk CISCO, sedangkan OSPF dapat digunakan pada semua merk jaringan. Pada penelitian ini dibandingkan delay dan rute dari kedua routing protokol yang diimplementasikan pada topologi Ring dan Mesh. Cisco Packet Tracer 5.3 digunakan untuk mensimulasikan kedua routing protokol ini. Skenario pertama adalah perancangan jaringan kemudian dilakukan pengujian waktu delay 100 kali dalam 5 kasus. Skenario kedua dilakukan pengujian trace route untuk mengetahui jalur yang dilewati paket data lalu memutus link utama. Pada skenario kedua juga dilakukan perbandingan nilai metric dan cost hasil simulasi dengan perhitungan rumus. Skenario ketiga dilakukan pengujian waktu konvergensi untuk setiap routing protokol pada setiap topologi. Hasilnya EIGRP lebih cepat 386 µs daripada OSPF untuk topologi Ring sedangkan OSPF lebih cepat 453 µs daripada EIGRP untuk topologi Mesh. Hasil trace route menunjukan rute yang dipilih oleh routing protokol yaitu nilai metric dan cost yang terkecil. Waktu konvergensi rata-rata topologi Ring pada EIGRP sebesar 12,75 detik dan 34,5 detik pada OSPF sedangkan topologi Mesh di EIGRP sebesar 13 detik dan 35,25 detik di OSPF. Kata Kunci : EIGRP, OSPF, Packet Tracer 5.3, Ring, Mesh, Konvergensi ABSTRACT EIGRP (Enhanced Interior Gateway Routing Protocol and OSPF (Open Shortest Path Fisrt is the routing protocol that is widely used in a computer network. EIGRP can only be used on devices Brand CISCO, while OSPF can be used on all brands of network. In this study comparison of both the delay and the routing protocol implemented on Ring and Mesh topology. Cisco Packet Tracer 5.3 is used to simulate both the routing protocol. The first scenario is the design of the network and then do the test of time delay 100 times in 5 cases. The

  16. Suivi du Gecko Phelsuma serraticauda (Squamata : Gekkonidae dans la région Atsinanana, dans l’Est de Madagascar

    Directory of Open Access Journals (Sweden)

    Karen L. M. Freeman

    2012-06-01

    Full Text Available RÉSUMÉCette étude a été effectuée sur le Gecko Phelsuma serraticauda durant les mois d’octobre et décembre 2008 dans 57 sites dans l’est et nord-est de Madagascar. Elle a pour objectifs de déterminer l’aire de distribution dans l’est de Madagascar et l’utilisation d’habitat de cette espèce pour sa conservation et son utilisation durable. La plupart des observations des individus sur les plantes sont sur le cocotier Cocos nucifera (84,3 % et le fruit de pain Artocarpus altilis (4,9 %, avec 8,3 % sur le mur d’une maison en bois. Le nombre de P. serraticauda varie entre un et cinq par biotope avec une moyenne de 2,6 ± 0,2 pour l’ensemble des plantes et de 1,7 ± 0,4 pour les maisons. Parmi les 29 pieds de cocotier, 34 % sont occupés chacun par un seul individu mâle ou femelle, 14 % par deux femelles, 10 % par deux mâles, 10 % par un mâle et une femelle, et 10 % par deux mâles et une femelle. Le nombre moyen de mâle a été 1,06 ± 0,20 et 1,00 ± 0,15 pour la femelle. Sur les quatre maisons visitées, trois sont occupées chacune par une femelle et la dernière par trois mâles et deux femelles. Le nombre moyen de mâles a été 0,75 ± 0,75 et de 1,25 ± 0,25 pour les femelles. Phelsuma serraticauda est rarement trouvé sur des eucalyptus, Artocarpus heterophyllus et autres palmiers. Cette espèce n’est pas recensée dans la forêt humide de basse altitude d’Analalava, à la périphérie de la forêt littorale d’Antetezana et dans la plantation de Ravenala madagascariensis. L’analyse des matières fécales a montré que l’espèce se nourrit principalement d’araignées, coléoptères, hyménoptères, hémiptères et de leurs larves. Elle est sympatrique avec P. lineata et P. quadriocellata. La collecte de P. serraticauda dans la nature est allouée avec une autorisation légale et suivant le quota fixé par la CITES. Des cas de collecte illicite qui constitue une menace pour l’espèce de P. serraticauda

  17. Combustion synthesis method and products

    Science.gov (United States)

    Holt, J.B.; Kelly, M.

    1993-03-30

    Disclosed is a method of producing dense refractory products, comprising: (a) obtaining a quantity of exoergic material in powder form capable of sustaining a combustion synthesis reaction; (b) removing absorbed water vapor therefrom; (c) cold-pressing said material into a formed body; (d) plasma spraying said formed body with a molten exoergic material to form a coat thereon; and (e) igniting said exoergic coated formed body under an inert gas atmosphere and pressure to produce self-sustained combustion synthesis. Also disclosed are products produced by the method.

  18. Chemical kinetics and combustion modeling

    Energy Technology Data Exchange (ETDEWEB)

    Miller, J.A. [Sandia National Laboratories, Livermore, CA (United States)

    1993-12-01

    The goal of this program is to gain qualitative insight into how pollutants are formed in combustion systems and to develop quantitative mathematical models to predict their formation rates. The approach is an integrated one, combining low-pressure flame experiments, chemical kinetics modeling, theory, and kinetics experiments to gain as clear a picture as possible of the process in question. These efforts are focused on problems involved with the nitrogen chemistry of combustion systems and on the formation of soot and PAH in flames.

  19. Fundamentals of premixed turbulent combustion

    CERN Document Server

    Lipatnikov, Andrei

    2012-01-01

    Lean burning of premixed gases is considered to be a promising combustion technology for future clean and highly efficient gas turbine engines. This book highlights the phenomenology of premixed turbulent flames. The text provides experimental data on the general appearance of premixed turbulent flames, physical mechanisms that could affect flame behavior, and physical and numerical models aimed at predicting the key features of premixed turbulent combustion. The author aims to provide a simple introduction to the field for advanced graduate and postgraduate students. Topics covered include La

  20. Autodesk Combustion 4 fundamentals courseware

    CERN Document Server

    Autodesk,

    2005-01-01

    Whether this is your first experience with Combustion software or you're upgrading to take advantage of the many new features and tools, this guide will serve as your ultimate resource to this all-in-one professional compositing application. Much more than a point-and-click manual, this guide explains the principles behind the software, serving as an overview of the package and associated techniques. Written by certified Autodesk training specialists for motion graphic designers, animators, and visual effects artists, Combustion 4 Fundamentals Courseware provides expert advice for all skill le

  1. Analisis Perbandingan Database Jurnal Elektronik Emerald, ProQuest ABI/INFORM dan SpringerLink Bidang Manajemen dan Ekonomi

    OpenAIRE

    Karyatin, Arianiansyah

    2016-01-01

    Penelitian ini dilakukan pada situs database jurnal elektronik Emerald, ProQuest ABI/INFORM dan SpringerLink. Tujuan penelitian ini adalah untuk mengetahui bagaimana konten (muatan) subjek kajian manajemen dan ekonomi pada database Emerald, ProQuest ABI/INFORM dan SpringerLink dan untuk mengetahui di dalam database manakah diantara database Emerald, ProQuest ABI/INFORM, dan Springerlink yang memuat bidang kajian manajemen dan ekonomi yang paling lengkap. Metode yang digunakan dalam pene...

  2. Analisis Perbandingan Database Jurnal Elektronik Emerald, ProQuest ABI/INFORM dan SpringerLink Bidang Manajemen dan Ekonomi

    OpenAIRE

    Karyatin, Arianiansyah

    2016-01-01

    Penelitian ini dilakukan pada situs database jurnal elektronik Emerald, ProQuest ABI/INFORM dan SpringerLink. Tujuan penelitian ini adalah untuk mengetahui bagaimana konten (muatan) subjek kajian manajemen dan ekonomi pada database Emerald, ProQuest ABI/INFORM dan SpringerLink dan untuk mengetahui di dalam database manakah diantara database Emerald, ProQuest ABI/INFORM, dan Springerlink yang memuat bidang kajian manajemen dan ekonomi yang paling lengkap. Metode yang digunakan dalam pene...

  3. Free Energy and Internal Combustion Engine Cycles

    CERN Document Server

    Harris, William D

    2012-01-01

    The performance of one type (Carnot) of Internal Combustion Engine (ICE) cycle is analyzed within the framework of thermodynamic free energies. ICE performance is different from that of an External Combustion Engine (ECE) which is dictated by Carnot's rule.

  4. Scramjet Combustion Stability Behavior Modeling Project

    Data.gov (United States)

    National Aeronautics and Space Administration — A recent breakthrough in combustion stability analysis (UCDS) offers the means to accurately predict the combustion stability of a scramjet. This capability is very...

  5. Scramjet Combustion Stability Behavior Modeling Project

    Data.gov (United States)

    National Aeronautics and Space Administration — A recent breakthrough in combustion stability analysis (UCDS) offers the potential to predict the combustion stability of a scramjet. This capability is very...

  6. Development of a Premixed Combustion Capability for Scramjet Combustion Experiments

    Science.gov (United States)

    Rockwell, Robert D.; Goyne, Christopher P.; Rice, Brian E.; Chelliah, Harsha; McDaniel, James C.; Edwards, Jack R.; Cantu, Luca M. L.; Gallo, Emanuela C. A.; Cutler, Andrew D.; Danehy, Paul M.

    2015-01-01

    Hypersonic air-breathing engines rely on scramjet combustion processes, which involve high speed, compressible, and highly turbulent flows. The combustion environment and the turbulent flames at the heart of these engines are difficult to simulate and study in the laboratory under well controlled conditions. Typically, wind-tunnel testing is performed that more closely approximates engine testing rather than a careful investigation of the underlying physics that drives the combustion process. The experiments described in this paper, along with companion data sets being developed separately, aim to isolate the chemical kinetic effects from the fuel-air mixing process in a dual-mode scramjet combustion environment. A unique fuel injection approach is taken that produces a nearly uniform fuel-air mixture at the entrance to the combustor. This approach relies on the precombustion shock train upstream of the dual-mode scramjet combustor. A stable ethylene flame anchored on a cavity flameholder with a uniformly mixed combustor inflow has been achieved in these experiments allowing numerous companion studies involving coherent anti-Stokes Raman scattering (CARS), particle image velocimetry (PIV), and planar laser induced fluorescence (PLIF) to be performed.

  7. High Frequency Combustion Instabilities of LOx/CH4 Spray Flames in Rocket Engine Combustion Chambers

    NARCIS (Netherlands)

    Sliphorst, M.

    2011-01-01

    Ever since the early stages of space transportation in the 1940’s, and the related liquid propellant rocket engine development, combustion instability has been a major issue. High frequency combustion instability (HFCI) is the interaction between combustion and the acoustic field in the combustion c

  8. High Frequency Combustion Instabilities of LOx/CH4 Spray Flames in Rocket Engine Combustion Chambers

    NARCIS (Netherlands)

    Sliphorst, M.

    2011-01-01

    Ever since the early stages of space transportation in the 1940’s, and the related liquid propellant rocket engine development, combustion instability has been a major issue. High frequency combustion instability (HFCI) is the interaction between combustion and the acoustic field in the combustion c

  9. Combustion Chemistry Diagnostics for Cleaner Processes.

    Science.gov (United States)

    Kohse-Höinghaus, Katharina

    2016-09-12

    Climate change, environmental problems, urban pollution, and the dependence on fossil fuels demand cleaner, renewable energy strategies. However, they also ask for urgent advances in combustion science to reduce emissions. For alternative fuels and new combustion regimes, crucial information about the chemical reactions from fuel to exhaust remains lacking. Understanding such relations between combustion process, fuel, and emissions needs reliable experimental data from a wide range of conditions to provide a firm basis for predictive modeling of practical combustion processes.

  10. Simulation study on combustion of biomass

    Science.gov (United States)

    Zhao, M. L.; Liu, X.; Cheng, J. W.; Liu, Y.; Jin, Y. A.

    2017-01-01

    Biomass combustion is the most common energy conversion technology, offering the advantages of low cost, low risk and high efficiency. In this paper, the transformation and transfer of biomass in the process of combustion are discussed in detail. The process of furnace combustion and gas phase formation was analyzed by numerical simulation. The experimental results not only help to optimize boiler operation and realize the efficient combustion of biomass, but also provide theoretical basis for the improvement of burner technology.

  11. Method and device for diagnosing and controlling combustion instabilities in internal combustion engines operating in or transitioning to homogeneous charge combustion ignition mode

    Science.gov (United States)

    Wagner, Robert M [Knoxville, TN; Daw, Charles S [Knoxville, TN; Green, Johney B [Knoxville, TN; Edwards, Kevin D [Knoxville, TN

    2008-10-07

    This invention is a method of achieving stable, optimal mixtures of HCCI and SI in practical gasoline internal combustion engines comprising the steps of: characterizing the combustion process based on combustion process measurements, determining the ratio of conventional and HCCI combustion, determining the trajectory (sequence) of states for consecutive combustion processes, and determining subsequent combustion process modifications using said information to steer the engine combustion toward desired behavior.

  12. Combustor nozzle for a fuel-flexible combustion system

    Science.gov (United States)

    Haynes, Joel Meier [Niskayuna, NY; Mosbacher, David Matthew [Cohoes, NY; Janssen, Jonathan Sebastian [Troy, NY; Iyer, Venkatraman Ananthakrishnan [Mason, OH

    2011-03-22

    A combustor nozzle is provided. The combustor nozzle includes a first fuel system configured to introduce a syngas fuel into a combustion chamber to enable lean premixed combustion within the combustion chamber and a second fuel system configured to introduce the syngas fuel, or a hydrocarbon fuel, or diluents, or combinations thereof into the combustion chamber to enable diffusion combustion within the combustion chamber.

  13. 30 CFR 56.4104 - Combustible waste.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Combustible waste. 56.4104 Section 56.4104... Control Prohibitions/precautions/housekeeping § 56.4104 Combustible waste. (a) Waste materials, including... properly, waste or rags containing flammable or combustible liquids that could create a fire hazard shall...

  14. Straw combustion on slow-moving grates

    DEFF Research Database (Denmark)

    Kær, Søren Knudsen

    2005-01-01

    Combustion of straw in grate-based boilers is often associated with high emission levels and relatively poor fuel burnout. A numerical grate combustion model was developed to assist in improving the combustion performance of these boilers. The model is based on a one-dimensional ‘‘walking...

  15. Chemical Looping Combustion with Different Types of Liquid Fuels Combustion en boucle chimique avec différentes charges liquides

    Directory of Open Access Journals (Sweden)

    Hoteit A.

    2011-02-01

    Full Text Available CLC is a new promising combustion process for CO2 capture with less or even no energy penalty compared to other processes. Up to now, most of the work performed on CLC was conducted with gaseous or solid fuels, using methane and coal and/or pet coke. Liquid fuels such as heavy fuels resulting from oil distillation or conversion may also be interesting feedstocks to consider. However, liquid fuels are challenging feedstock to deal with in fluidized beds. The objective of the present work is therefore to investigate the feasibility of liquid feed injection and contact with oxygen carrier in CLC conditions in order to conduct partial or complete combustion of hydrocarbons. A batch experimental fluidized bed set-up was developed to contact alternatively oxygen carrier with liquid fuels or air. The 20 mm i.d. fluidized bed reactor was filled up with 45 g of NiAl0.44O1.67 and pulses of 1-2 g of liquid were injected in the bed at high temperatures up to 950˚C. Different feedstocks have been injected, from dodecane to heavy fuel oils No.2. Results show that, during the reduction period, it is possible to convert all the fuel injected and there is no coke remaining on particles at the end of the reduction step. Depending upon oxygen available in the bed, either full combustion or partial combustion can be achieved. Similar results were found with different liquid feeds, despite their different composition and properties. Le CLC est un nouveau concept prometteur appliqué à la combustion qui permet le captage de CO en minimisant la pénalité énergétique liée au captage. Jusqu’à présent, l’essentiel des travaux de recherche dans le domaine du CLC concerne les charges gazeuses (méthane et solides (charbon et coke. Les charges liquides, et particulièrement les résidus pétroliers, sont des charges également intéressantes à considérer a priori. La mise en oeuvre de ces charges en lit fluidisé est cependant délicate. L’objet de ce

  16. KEJAHATAN PORNOGRAFI Upaya Pencegahan dan Penanggulangannya di Kabupaten Ponorogo

    Directory of Open Access Journals (Sweden)

    Irma Rumtianing Uswatul Hanifah

    2013-12-01

    Full Text Available Pemerintah telah mengeluarkan undang-undang No 44 Tahun 2008 tentang pornografi. Tujuan dari undang-undang tersebut salah satunya mewujudkan dan memelihara tatanan kehidupan masyarakat yang beretika, berkepribadian luhur, menjungjung tinggi nilai-nilai Ketuhanan Yang Maha Esa, serta menghormati harkat dan martabat kemanusiaan. Dalam perkembangannya, materi pornografi mengalami pertumbuhan dan penyebaran yang pesat seiring dengan perkembangan dan kemajuan teknologi informasi dan komunikasi. Peredaran dan penyebaran film porno kini semakin pesat karena ditopang dengan kecanggihan sarana informasi dan komunikasi salah satunya media internet yang bisa diakses oleh masyarakat pada setiap saat. Tulisan berikut akan mengkaji bagaimana upaya dan trategi yang dilakukan oleh Pemerintah Kabupaten Ponorogo dalam mencegah dan menanggulangi kejahatan pornografi di Kabupaten Ponorogo, apa hambatan dan bagaimana solusi dalam pencegahan serta penanggulangan kejahatan pornografi di Kabupaten Ponorogo serta bagaimana formulasi kebijakan untuk pencegahan dan penanggulangan kejahatan pornografi di Kabupaten Ponorogo. Kata kunci: Pornografi, Polres, KP3A

  17. Perbandingan Akurasi Pengukuran Suhu dan Kelembaban Antara Sensor DHT11 dan DHT22

    Directory of Open Access Journals (Sweden)

    Arief Hendra Saptadi

    2014-11-01

    Full Text Available Suhu dan kelembaban merupakan dua objek pengukuran yang acapkali terdapat di dalam sistem akuisisi data. Terdapat banyak piranti sensor yang berfungsi untuk mengukur dua objek tersebut dan akurasi merupakan salah satu parameter yang dapat digunakan untuk memilihnya. DHT11 dan DHT22 adalah sensor seri DHT dari Aosong Electronics yang dapat melakukan pengukuran suhu dan kelembaban secara serempak dengan keluaran digital. Informasi tentang akurasi terdapat di dalam lembar data keduanya. Kendati pun demikian informasi tersebut tidak menggambarkan kondisi sesungguhnya saat dioperasikan pada lokasi maupun platform tertentu. Tujuan dari penelitian ini adalah untuk membandingkan akurasi dari DHT11 dan DHT22 dalam pengukuran suhu dan kelembaban saat dioperasikan di dalam maupun di luar ruangan, menggunakan platform ATMEL AVR dan Arduino. Berdasarkan pengujian yang telah dilakukan, DHT22 memiliki akurasi yang lebih baik daripada DHT11 dengan galat relatif pengukuran suhu 4% dan kelembaban 18%. DHT11 sebaliknya memiliki rentang galat yang lebih lebar sebesar 1 – 7% dan 11 – 35%, masing-masing untuk pengukuran suhu dan kelembaban. Perbedaan lokasi dan platform tidak memberikan pengaruh pada hasil pengukuran. Galat pengukuran kelembaban yang masih di atas 10% menunjukkan perlunya kalibrasi ulang. Di masa mendatang, selain akurasi, kepresisian juga perlu diuji menggunakan penghitungan simpangan baku pada hasil-hasil pengukuran.

  18. KANDUNGAN ASAM AMINO, TAURIN, MINERAL MAKRO-MIKRO, DAN VITAMIN B12 UBUR-UBUR (Aurelia aurita SEGAR DAN KERING

    Directory of Open Access Journals (Sweden)

    - - Nurjanah

    2014-06-01

    Full Text Available Tujuan penelitian adalah menentukan komposisi gizi, asam amino, taurin, mineral makro dan mikro,dan vitamin B12 pada ubur-ubur (Aurelia aurita segar dan kering. Asam amino esensial pada ubur-uburyaitu arginina, leusina, valina, treonina, lisina, isoleusina, fenilalanina, metionina, dan histidina, sedangkanasam amino non esensial yaitu asam glutamat, glisina, asam aspartat, serina, alanina, dan tirosina. Asamamino esensial tertinggi segar dan kering adalah arginina sebesar 1,72% (bk dan 1,44% (bk dan terendahhistidina yaitu sebesar 0,19% (bk dan 0,13% (bk. Asam amino non esensial segar dan kering tertinggiadalah asam glutamat dan glisina yaitu sebesar 3,26% (bk dan 2,62% (bk dan terkecil tirosina sebesar0,38% (bk dan 0,41% (bk. Taurin segar sebesar 2,68% (bk dan kering sebesar 0,67% (bk. Mineral makrotertinggi segar dan kering adalah natrium yaitu 180.092,1 ppm (bk dan 111.209,4 ppm (bk, terkecil adalahkalsium yaitu 5.750,2 ppm (bk dan 11,1 ppm (bk. Mineral mikro tertinggi segar dan kering adalah iodium yaitu8.291,5 ppm (bk dan 1.800 ppm (bk dan yang terkecil adalah tembaga yaitu 1,1 ppm (bk dan 0,6 ppm (bk.Vitamin B12 segar adalah 396,6 μm/100 g (bk dan kering 63,5 μm/100 g (bk.Kata kunci: asam amino, mineral, taurin, ubur-ubur (Aurelia aurita, vitamin B12

  19. IDENTIFIKASI DAN TEKNIK PENGENDALIAN HAMA DAN PENYAKIT BIBIT KRANJI (Pongamia pinnata

    Directory of Open Access Journals (Sweden)

    Tati Suharti

    2015-12-01

    Full Text Available Salah satu faktor pembatas dalam keberhasilan tanaman untuk tumbuh optimal yaitu adanya serangan hama dan penyakit. Identifikasi hama dan penyakit penting dilakukan karena berkaitan dengan teknik pengendalian. Tujuan penelitian ini adalah untuk mengetahui jenis hama dan penyakit yang menyerang bibit kranji (Pongamia pinnata dan teknik pengendaliannya. Metode penelitian meliputi identifikasi jenis hama dan penyakit serta teknik pengendalian dengan menggunakan pestisida biologi dan kimia. Hasil penelitian menunjukan, hama yang menyerang bibit kranji antara lain belalang (Valanga nigricornis, ulat grayak (Spodoptera sp., ulat jengkal (Hyposidra talaca dan ulat penggulung (Syllepta sp. sedangkan patogen yang menyebabkan penyakir hawar daun yaitu Phytophthora sp. Teknik pengendalian hama bibit kranji dengan menggunakan larutan ekstrak biji mahoni atau insektisida Bacillus thuringiensis sedangkan teknik pengendalian penyakit menggunakan larutan ekstrak biji mahoni, larutan ekstrak daun cengkeh atau benomil

  20. Sulfur Chemistry in Combustion II

    DEFF Research Database (Denmark)

    Johnsson, Jan Erik; Kiil, Søren

    2000-01-01

    Several options are available to control the emission of SO2 from combustion processes. One possibility is to use a cleaner technology, i.e. fuel switching from oil and coal to natural gas or biomass, or to desulphurize coal and oil. Another possibility is to change to a different technology for ...

  1. Leaching from biomass combustion ash

    DEFF Research Database (Denmark)

    Maresca, Alberto; Astrup, Thomas Fruergaard

    2014-01-01

    The use of biomass combustion ashes for fertilizing and liming purposes has been widely addressed in scientific literature. Nevertheless, the content of potentially toxic compounds raises concerns for a possible contamination of the soil. During this study five ash samples generated at four...

  2. Environmental optimisation of waste combustion

    Energy Technology Data Exchange (ETDEWEB)

    Schuster, Robert [AaF Energikonsult, Stockholm (Sweden); Berge, Niclas; Stroemberg, Birgitta [TPS Termiska Processer AB, Nykoeping (Sweden)

    2000-12-01

    The regulations concerning waste combustion evolve through R and D and a strive to get better and common regulations for the European countries. This study discusses if these rules of today concerning oxygen concentration, minimum temperature and residence time in the furnace and the use of stand-by burners are needed, are possible to monitor, are the optimum from an environmental point of view or could be improved. No evidence from well controlled laboratory experiments validate that 850 deg C in 6 % oxygen content in general is the best lower limit. A lower excess air level increase the temperature, which has a significant effect on the destruction of hydrocarbons, favourably increases the residence time, increases the thermal efficiency and the efficiency of the precipitators. Low oxygen content is also necessary to achieve low NO{sub x}-emissions. The conclusion is that the demands on the accuracy of the measurement devices and methods are too high, if they are to be used inside the furnace to control the combustion process. The big problem is however to find representative locations to measure temperature, oxygen content and residence time in the furnace. Another major problem is that the monitoring of the operation conditions today do not secure a good combustion. It can lead to a false security. The reason is that it is very hard to find boilers without stratifications. These stratifications (stream lines) has each a different history of residence time, mixing time, oxygen and combustible gas levels and temperature, when they reach the convection area. The combustion result is the sum of all these different histories. The hydrocarbons emission is in general not produced at a steady level. Small clouds of unburnt hydrocarbons travels along the stream lines showing up as peaks on a THC measurement device. High amplitude peaks has a tendency to contain higher ratio of heavy hydrocarbons than lower peaks. The good correlation between some easily detected

  3. ANALISIS TINGKAT KEPUASAN DAN HARAPAN PASEN TERHADAP PELAYANAN PUSKESMAS DAN RUMAH SAKIT DAERAH PROVINSI DIY

    Directory of Open Access Journals (Sweden)

    Sunarto Sunarto

    2010-10-01

    Full Text Available Kepuasan merupakan perasaan seseorang mengenai kesenangan atau kekecewaan sebagai hasil membandingkan antara kinerja dan harapan. Jumlah kunjungan Puskesmas tahun 2007 sebesar 3.094.027 pasien yang terdiri dari 3.076442 rawat jalan dan 17.585 rawat inap. Penelitian untuk mengentahui gambaran tingkat kepuasan dan untuk mengetahui perbedaan tingkat kepuasan dan harapan pasien yang mendapatkan pelayanan Puskemas dan rumah sakit menurut wilayah Kabupatet / Kota di Propinsi DIY Penelitian ini merupakan penelitian deskriptif analitik dengan menggunakan rancangan cros sectional. Instrumen penelitian yang digunakan adalah kuisioner dengan 35 item pernyataan yang diambil dari atribut-atribut SERVQUAL dalam 5 dimensi. Total sampel untuk lima Kabupaten Kota sebanyak 1000, masing-masing Kabupaten Kota 200. Penelitian ini dilakukan terhadap pasien yang menerima pelayanan kesehatan di Puskesmas dan Rumah Sakit Daerah di Kabupaten-Kota Daerah Istimewa Yogyakarta. Penilaian tingkat kepuasan pasien ketika mereka berobat ke Puskesmas dan Rumah Sakit di Propinsi DIY, dengan menggunakan skala O sampai 4. Hasilnya adalah dimensi tangibles, rata-rata kepuasan pasien (2,96 cukup dan harapan pasien (3,38 pada dimensi reliability, rata-rata kepuasan pasien (3,01 bagus dan harapan pasien (3,40. Pada dimensi responsiveness, rata-rata kepuasan pa-sien (3,07 bagus dan harapan pasien (3,42. Dimensi assurance, rata-rata kepuasan pasien (3, 1 0 bagus dan harapan pasien (3 ,42. pada dimensi emphaty, rata-rata kepuasan pasien (3,02 bagus dan harapan pasien (3,35. Hasil uji statistik didapatkan nilai p > 0.05, berarti pada alpha 5%, dapat disimpulkan bahwa tidak terdapat perbedaan tingkat kepuasan diantara kelima wilayah kabupaten/kota di DIY. Penilaian tingkat kepuasan pasien, ketika mereka berkunjung ke Puskesmas dan Rumah Sakit di DIY secara rata-rata bagus dan tidak ada perbedaan tingkat kepuasan menurut wilayah Kabupaten-Kota di Propinsi DIY. Kata Kunci : Kepuasan, harapan

  4. Fluidized-bed combustion of gasification residue

    Energy Technology Data Exchange (ETDEWEB)

    Kudjoi, A.; Heinolainen, A.; Hippinen, I.; Lu, Y. [Helsinki University of Technology, Espoo (Finland). Lab. of Energy Economics and Power Plant Engineering

    1998-12-31

    Hybrid combined cycle processes have been presented as possibilities for power generation in the future. In the processes based on partial gasification of coal, the solid materials removed from a gasifier (i.e. fly ash and bed char) contain unburned fuel, which is burned either in an atmospheric or a pressurised fluidised-bed. Pressurised fluidised-bed (PFB) combustion of gasification residues were studied experimentally by Helsinki University of Technology. The gasification residues, i.e. cyclone fines and bed chars, came from pilot scale PFB gasification tests of bituminous coals. The combustion efficiency was high in cyclone fines combustion. The calcium sulphide oxidised effectively to calcium sulphate in the combustion of cyclone fines. In bed char combustion the residual sulphide contents in solids after combustion were still relatively high. In general, sulphur dioxide emissions in residue combustion were low. The recarbonation of calcium oxide was observed in bed char combustion. Fuel-N conversion to NO{sub x} during bed char combustion and in most of the test runs with cyclone fines was higher than in bituminous coal combustion. In bed char combustion the conversion was significantly higher than in cyclone fines combustion. NO{sub x} emissions increased with increasing excess air for both residues, as was expected. In bed char combustion the highest NO{sub x} emissions were measured at higher pressure. Calculated mass reactivity values of equal particle size of all bed chars studied had similar trends with burnout. The biggest particles had the lowest reactivity values throughout the combustion, while reactivity for finer particles was at considerably higher level and sharply increases with burnout. In the constant combustion conditions used in the tests, no significant differences were observed in rate-controlling mechanisms for bed char fractions studied. 25 refs., 13 figs., 15 tab.

  5. Combustive management of oil spills

    Energy Technology Data Exchange (ETDEWEB)

    1992-01-01

    Extensive experiments with in situ incineration were performed on a desert site at the University of Arizona with very striking results. The largest incinerator, 6 feet in diameter with a 30 foot chimney, developed combustion temperatures of 3000, F, and attendant soot production approximately 1000 times less than that produced by conventional in situ burning. This soot production, in fact, is approximately 30 times less than current allowable EPA standards for incinerators and internal combustion engines. Furthermore, as a consequence of the high temperature combustion, the bum rate was established at a very high 3400 gallons per hour for this particular 6 foot diameter structure. The rudimentary design studies we have carried out relative to a seagoing 8 foot diameter incinerator have predicted that a continuous burn rate of 7000 gallons per hour is realistic. This structure was taken as a basis for operational design because it is compatible with C130 flyability, and will be inexpensive enough ($120,000 per copy) to be stored at those seaside depots throughout the US coast line in which the requisite ancillary equipments (booms, service tugs, etc.) are already deployed. The LOX experiments verified our expectations with respect to combustion of debris and various highly weathered or emulsified oils. We have concluded, however, that the use of liquid oxygen in actual beach clean up is not promising because the very high temperatures associated with this combustion are almost certain to produce environmentally deleterious effects on the beach surface and its immediately sublying structures. However, the use of liquid oxygen augmentation for shore based and flyable incinerators may still play an important role in handing the problem of accumulated debris.

  6. STRATEGI PERSONAL BRANDING FOTOGRAFER HOTEL DAN RESORT

    OpenAIRE

    GUSTAFIAN, THOMAS HENRY ADRIAN

    2014-01-01

    Identitas brand menjadi masalah penting dalam lingkungan bisnis yang semakin kompleks dan penuh dengan persaingan. Salah satu cara yang dapat dilakukan seorang entrepreneur untuk menunjukkan identitas brand adalah melalui personal branding. Strategi personal branding sangat dipengaruhi oleh konsep diri dan strategi komunikasi yang dimiliki oleh seorang entrepreneur. Tulisan ini menggambarkan bagaimana strategi personal branding mempengaruhi keberhasilan seorang entrepreneur

  7. Dhenggung Asmarandana dan Dhegung Banten: Sebuah Komparasi

    Directory of Open Access Journals (Sweden)

    Teguh -

    2013-11-01

    Full Text Available The Comparation of Dhenggung Asmarandana and Dhegung Banten. Penelitian ini membahas perbandinganantara gending Dhenggung Asmaradana gaya Surakarta dengan gending Dhegung Banten gaya Yogyakarta.Berdasarkan penelitian dapat disimpulkan bahwa kedua gending memiliki persamaan dan perbedaan. Persamaankeduanya terletak pada laras, pathet, bentuk gendhing, struktur gendhing, serta balungan gending. Sedangkanperbedaannya hanya pada nama dan garap tabuhan bonang.

  8. Radiations cosmiques : danger dans l'Espace

    Science.gov (United States)

    Bonnet-Bidaud, J. M.; Dzitko, H.

    2000-06-01

    Au sol, l'atmosphere nous protege plus ou moins bien. Mais dans l'espace ou a bord des avions de ligne, l'homme est directement expose aux rayonnements cosmiques qui peuvent etre mortels. Un veritable frein a la presence humaine prolongee dans l'espace. Une menace que les agences spatiales prennent tres au serieux.

  9. Vast voer in zoogperiode belangrijker dan gedacht

    NARCIS (Netherlands)

    Peet-Schwering, van der C.M.C.; Binnendijk, G.P.; Troquet, L.M.P.

    2012-01-01

    Biggen die voor spenen vast voer opnemen (eters) groeien na spenen circa 50 gram per dag sneller dan biggen die tijdens de zoogperiode geen vast voer opnemen (niet-eters). Daarnaast groeien zwaardere biggen bij spenen circa 50 gram per dag sneller dan lichtere biggen bij spenen. Dit blijkt uit onder

  10. PENGARUH KOMUNIKASI INTERN DAN KEPEMIMPINAN KEPALA SEKOLAH TERHADAP EFEKTIVITAS KERJA GURU DAN KARYAWAN SMP NEGERI 1 SURUH KABUPATEN SEMARANG

    Directory of Open Access Journals (Sweden)

    - Muhsin

    2006-12-01

    Full Text Available Permasalahan yang dikaji dalam penelitian ini adalah : 1 Adakah pengaruh komunikasi intern terhadap efektivitas kerja guru dan karyawan? 2 Adakah pengaruh kepemimpinan kepala sekolah terhadap efektivitas kerja guru dan karyawan? 3 Seberapa besar pengaruh komunikasi intern dan kepemimpinan kepala sekolah terhadap efektivitas kerja guru dan karyawan? Tujuan penelitian ini adalah : 1 untuk mengetahui ada dan besarnya pengaruh komunikasi intern terhadap efektivitas kerja guru dan karyawan. 2 Untuk mengetahui ada dan besarnya pengaruh Kepemimpinan kepala sekolah terhadap efektivitas kerja guru dan karyawan. 3.Untuk mengetahui ada dan besarnya pengaruh komunikasi intern dan kepemimpinan kepala sekolah terhadap efektivitas kerja guru dan karyawan. Populasi dalam penelitian ini adalah semua guru dan karyawan yang ada di SMP Negeri 1 Suruh kabupaten Semarang yang berjumlah 40 orang.. Metode pengumpulan data menggunakan angket dan dokumentasi. Analisis data menggunakan  program statistic SPSS. Hasil penelitian menunjukkan adanya pengaruh positif antara Komunikasi intern dan kepemimpinan kepala sekolah terhadap efektivitas kerja guru dan karyawan sebesar 68,7%. Uji pengaruh secara parsial menunjukkan bahwa seluruh variabel bebas  Komunikasi intern dan kepemimpinan kepala sekolah berpengaruh secara signifikan terhadap Efektivitas kerja  dengan besarnya pengaruh masing-masing adalah 32,61% Untuk Komunikasi intern dan 25,62% untuk kepemimpinan kepala sekolah. Kata Kunci : Komunikasi Intern. Kepemimpinan Kepala Sekolah, Efektivitas Kerja

  11. Penerapan Sistem Remunerasi dan Kinerja Pelayanan

    Directory of Open Access Journals (Sweden)

    Tri Wisesa Soetisna

    2015-08-01

    Full Text Available Remunerasi dapat memengaruhi motivasi pegawai sekaligus meningkatkan kinerjanya. Demikian halnya di rumah sakit sebagai institusi pelayanan kesehatan yang padat modal, sumber daya manusia serta padat ilmu dan teknologi. Penelitian ini bertujuan untuk menganalisis persepsi pegawai terhadap implementasi sistem remunerasi dan kinerja unit pelayanan bedah jantung dewasa (UPBJD di rumah sakit. Penelitian ini menggunakan pendekatan mixed methods (kuantitatif dan kualitatif. Desain penelitian kuantitatif adalah potong lintang menggunakan instrumen kuesioner self-assessment. Sedangkan desain penelitian kualitatif adalah deskriptif, dilakukan melalui focus group discussion dan telaah dokumen pada data berupa buku jadwal, buku registrasi, catatan keperawatan, dan rekam medis. Pengambilan data dilakukan pada tahun 2013 di salah satu rumah sakit di Jakarta. Responden/informan adalah staf medis fungsional, perawat, dan petugas administrasi berjumlah 29 orang. Data dianalisis secara univariat (metode kuantitatif, dan content analysis (metode kualitatif. Hasil penelitian menunjukkan bahwa sebagian besar staf medis fungsional dan perawat tidak puas (71,2% dengan beberapa hal dalam penerapan sistem remunerasi, seperti pada sistem penggajian dan penentuan grading. Terlihat kinerja unit pelayanan bedah jantung dewasa mengalami kenaikan setiap tahun sebelum dan setelah penerapan sistem remunerasi. Diharapkan agar rumah sakit ini dapat memperbaiki sistem remunerasi yang sesuai ketentuan kebijakan dan menyusun formulasi insentif dan bonus yang lebih sesuai dengan kondisi saat ini serta perlu dilakukan sosialisasi yang tepat dan evaluasi secara berkala. Implementation of Remuneration System and Service Performance Remuneration can influence worker`s motivation, and improve their performance. Likewise in hospital as capital-intensive, human resources-intensive as well as knowledge and technology-intensive health care institution. This study aimed to analyze employee

  12. Secondary combustion device for woodburning stove

    Energy Technology Data Exchange (ETDEWEB)

    Craver, R.D.

    1989-08-08

    This patent describes in a wood burning stove including an exhaust flue opening, a combustion chamber for primary combustion having an access door, a support for wood to be burned and a primary air inlet means for supplying air to support primary combustion of the wood to produce flue gases containing combustible particulate material, plenum means for directing the flue gases in a direction from the combustion chamber to the flue opening in a preselected path, and secondary combustion means for burning the particulate material in the flue gases before flue gases through the exhaust flue opening. The improvement comprising: the combustion chamber having a flue gas exit opening extending laterally across the top of the combustion chamber and communicating the combustion chamber with the plenum means, an elongated manifold extending laterally across and above the combustion chamber substantially coextensively with the flue gas exit opening, a number of air opening spaced longitudinally along the manifold and facing opposite the direction of the flue gases closely adjacent the flue gas exit opening, and an air inlet means for supplying ambient, secondary combustion air to the manifold for counterflow thereof from the openings into the path of the flue gases in a plurality of distinct jets.

  13. Measurement and simulation of swirling coal combustion

    Institute of Scientific and Technical Information of China (English)

    Liyuan Hu; Lixing Zhou; Yonghao Luo; Caisong Xu

    2013-01-01

    Particle image velocimetry (PIV),thermocouples and flue gas analyzer are used to study swirling coal combustion and NO formation under different secondary-air ratios.Eulerian-Lagrangian large-eddy simulation (LES) using the Smagorinsky-Lilly sub-grid scale stress model,presumed-PDF fast chemistry and eddy-break-up (EBU) gas combustion models,particle devolatilization and particle combustion models,are simultaneously used to simulate swirling coal combustion.Statistical LES results are validated by measurement results.Instantaneous LES results show that the coherent structures for swirling coal combustion are stronger than those for swirling gas combustion.Particles are shown to concentrate along the periphery of the coherent structures.Combustion flame is located in the high vorticity and high particle concentration zones.Measurement shows that secondary-air ratios have little effect on final NO formation at the exit of the combustor.

  14. Combustion diagnostic for active engine feedback control

    Science.gov (United States)

    Green, Jr., Johney Boyd; Daw, Charles Stuart; Wagner, Robert Milton

    2007-10-02

    This invention detects the crank angle location where combustion switches from premixed to diffusion, referred to as the transition index, and uses that location to define integration limits that measure the portions of heat released during the combustion process that occur during the premixed and diffusion phases. Those integrated premixed and diffusion values are used to develop a metric referred to as the combustion index. The combustion index is defined as the integrated diffusion contribution divided by the integrated premixed contribution. As the EGR rate is increased enough to enter the low temperature combustion regime, PM emissions decrease because more of the combustion process is occurring over the premixed portion of the heat release rate profile and the diffusion portion has been significantly reduced. This information is used to detect when the engine is or is not operating in a low temperature combustion mode and provides that feedback to an engine control algorithm.

  15. PENENTUAN ANGKA OKTANA BAHAN BAKAR KOMERSIAL DENGAN MENGGUNAKAN MODEL KINETIKA OKSIDASI DAN PEMBAKARAN HIDROKARBON MULTIKOMPONEN

    Directory of Open Access Journals (Sweden)

    Yuswan Muharam

    2012-11-01

    Full Text Available One of the characteristics of gasoline fuel is anti-knock property represented by its octanenumber. The determination of octane numbers in Indonesia is by using cooperative fuel researchengines. The usage of cooperative fuel research engines in Indonesia has constraints, i.e. the limitednumber of the units and the old age. This study aims to obtain the octane numbers of commercialfuels by using kinetic models. The kinetics models of the oxidation and combustion of primaryreference fuel and multi component hydrocarbons are used to calculate the ignition delay times ofprimary reference fuel and commercial fuels, respectively. The ignition delay times of primaryreference fuel and commercial fuels are calculated at the same initial pressure and temperature, aswell as the same equivalence ratio. The octane number of a commercial fuel is known if its ignitiondelay time agrees with that of PFR possessing a certain volume percentage of isooctane. The modelgenerates the octane numbers of commercial fuels BB-A being 92.5, BB-B being 94.5, BB-C being89, BB-D being 90.5 and BB-E being 91.5 with the good agreement with those claimed by the fuelproducers. Salah satu karakteristik bahan bakar bensin adalah sifat anti ketukan yang dinyatakan dengan angkaoktana. Penentuan angka oktana di Indonesia menggunakan mesin CFR (cooperative fuel research.Pemakaian mesin CFR di Indonesia memiliki kendala, yaitu jumlah unit terbatas dan usia tua.Penelitian ini bertujuan mendapatkan angka oktana bahan bakar komersial dengan menggunakanmodel kinetika. Model kinetika oksidasi dan pembakaran bahan bakar rujukan utama dan modelhidrokarbon multikomponen yang telah divalidasi masing-masing digunakan untuk menghitungwaktu tunda ignisi bahan bakar rujukan utama dan bahan bakar komersial. Waktu tunda ignisibahan bakar rujukan utama dan bahan bakar komersial dihitung pada tekanan dan temperatur awal,serta rasio ekuivalensi yang sama. Angka oktana suatu bahan bakar komersial

  16. KARAKTERISASI SIMPLISIA DAN EKSTRAK DAUN STROBILANTHUS CRISPUS

    Directory of Open Access Journals (Sweden)

    Ani Isnawati

    2012-10-01

    Full Text Available Khasiat obat tradisional disebabkan oleh adanya senyawa kimia yang  dikandungnya. Bahan baku obat dari hasil pertanian atau kumpulan tumbuhan liar tentunya kandungan kimianya tidak dapat dijamin selalu konstan (ajeg karena adanya variabel bibit, tempat tumbuh, iklim, kondisi (umur dan cara panen. Kandungan senyawa kimia yang bertanggung jawab terhadap respon biologis harus mempunyai spesifikasi kimia, yaitu informasi  komposisi (jenis dan kadar. 0leh karena itu penetapan karakterisasi suatu simplisia dan ekstrak perlu dilakukan guna menjamin bahwa bahan suatu produk obat tradisional dapat diketahui mutunya. Karakterisasi dilakukan terhadap Tanaman Strobilanthus crispus (BL, yaitu simplisia bagian daun dan ekstrak 50% tanaman tersebut. Karakterisasi simplisa meliputi : penetapan kadar abu, kadar abu larut air, kadar abu tidak larut asam, kadar sari larut air, kadar sari larut asam, dan kadar air secar·a destilasi. Cara penetapan diatas dilakukan sesuai prosedur yang Ielah ditetapkan MMI, 1979. Sedangkan karakterisasi ekstrak mencakup : karakterisasi non spesifik yang meliputi penetapan bobot  jenis, kadar air, kadar sisa pelarut, kadar abu dan karakterisasi spesifik yang mencakup  pemeriksaan·senyawa yang terlarut dalam pelarut air dan etanol, pola kromatografi dengan cara KLT-densitometri, pemeriksaan golongan kimia ekstrak dan penetapan kadar zat kimia. Hasil penetapan karakterisasi simplisia menunjukkan spesifikasi tidak sesuai dengan yang dipersyaratkan MMI, hanya penetapan sari larut etanol yang memenuhi persyaratan. Penetapan karakterisasi ekstrak etanol 50% menunjukkan tidak terdapat etanol dalam ekstrak, kadar air 13,3 %; bobot jenis 1,262%, senyawa terlarut dalam pelarut air 95,06%, senyawa terlarut dalam pelarut etanol 18,69 % dan kadar flavonoid  17,59 % serta  profil  kromatogram komponen utama fraksi heksan, Khloroform dan etanol.

  17. Distributed Low Temperature Combustion: Fundamental Understanding of Combustion Regime Transitions

    Science.gov (United States)

    2016-09-07

    Excellent optical access for laser- based diagnostic measurements ; (ii) Accurate experimental control of boundary conditions; (iii) Aerodynamic flame...potential to extend methods based on bimodal approximations, such as the BML [21] framework , by permitting inter- mediate fluid states, which is of...identify the impact of the major chemical pathways on combustion mode transitions. The conceptual multifluid approach of Spalding can be used to avoid

  18. 77 FR 37361 - National Emission Standards for Hazardous Air Pollutants for Reciprocating Internal Combustion...

    Science.gov (United States)

    2012-06-21

    ... Reciprocating Internal Combustion Engines; New Source Performance Standards for Stationary Internal Combustion... Combustion Engines; New Source Performance Standards for Stationary Internal Combustion Engines.'' The EPA... Internal Combustion Engines; New Source Performance Standards for Stationary Internal Combustion Engines...

  19. TUGAS DAN WEWENANG PUSAT PELAPORAN DAN ANALISIS TRANSAKSI KEUANGAN (PPATK DALAM PEMBERANTASAN TINDAK PIDANA PENCUCIAN UANG

    Directory of Open Access Journals (Sweden)

    Johari Johari

    2014-03-01

    Full Text Available Tugas dan wewenang Pusat Pelaporan dan Analisis Transaksi Keuangan (PPATK terdapat di dalam Pasal 26 dan Pasal 27 Undang-Undang No. 25 Tahun 2003 tentang Tindak Pencucian Uang. Berdasarkan ketentuan tersebut, tugas dan wewenang PPATK tersebut bertujuan untuk mendeteksi terjadinya tindak pidana pencucian uang, dan membantu penegakan hukum yang berkaitan dengan pencucian uang, termasuk tindak pidana asal yang melahirkannya (predicate offences. Namun, Peranan PPATK akan berjalan secara efektif apabila aparat penegak hukum seperti Kepolisian, Kejaksaan, Pengadilan, Bea dan Cukai, para regulator seperti Bank Indonesia, Departemen Keuangan, Badan Pengawas Pasar Modal serta Penyedia Jasa Keuangan, industri perbankan, asuransi, perusahaan pembiayaan, dana pensiun, perusahaan efek, pengelola reksadana, media massa, masyarakat bekerjasama secara terorganisir dan terpadu dalam pemberantasan tindak pencucian uang di Indonesia. Dengan kewenangan yang dimilikinya, PPATK dapat mengejar hasil dari kejahatan, apabila hasil kejahatan tersebut dapat dikejar dan disita maka negara dengan sendirinya akan mengurangi tindak kejahatan itu sendiri. Kata kunci : Pencucian uang, tindak pidana pencucian uang (money laundering, kejahatan terorganisir, dan Pusat Pelaporan dan Analisis Transaksi Keuangan (PPATK.

  20. Peran Mitra Strategis dan Agen Perubahan dalam Manajemen Talenta dan Kinerja Manajer

    Directory of Open Access Journals (Sweden)

    Ida Ketut Kusumawijaya

    2014-06-01

    Full Text Available Abstract  The purposes of the study are to analyze: (1 characteristic of strategic partner and change agent roles, talent management and managers performance, (2 influence of strategic partner and change agent roles to talent management and its impact to managers performance. Four hundred hotel managers in Bali were participated in this study by using proportional random sampling. Data were analyzed using descriptive analysis and SEM. The result shows that: (1 strategic partner and change agent role, talent management and managers performance are in enough category, (2 positive and significant effect between strategic partner and change agent roles to talent management and its impact to managers performance. Keywords:Strategic Partner Role, Change Agent Role, Talent Management, Managers Performance.AbstrakTujuan penelitian ini adalah untuk menganalisis: (1 karakteristik dari mitra strategis dan peran agen perubahan, manajemen bakat dan kinerja manajer, (2 pengaruh mitra strategis dan peran agen perubahan untuk manajemen bakat dan dampaknya terhadap kinerja manajer. Sebanyak empat ratus manajer hotel di Bali berpartisipasi dalam penelitian ini dengan menggunakan proporsional random sampling. Data dianalisis menggunakan analisis deskriptif dan SEM. Hasil penelitian menunjukkan bahwa: (1 mitra strategis dan peran agen perubahan, manajemen bakat dan kinerja manajer termasuk dalam kategori cukup, (2 pengaruh positif dan signifikan antara mitra strategis dan peran agen perubahan untuk manajemen bakat dan dampaknya terhadap kinerja manajer.Keywords: Peran Mitra Strategis, Peran Agen Perubahan, Manajemen Talenta, kinerja Manajer.

  1. Controle do inóculo inicial para redução dos danos pela podridão: 'olho-de-boi' em macieiras

    Directory of Open Access Journals (Sweden)

    Rosa Maria Valdebenito-Sanhueza

    2010-12-01

    Full Text Available O objetivo deste trabalho foi avaliar o impacto da redução do inóculo no controle da podridão-'olho-de-boi' (POB causada por Cryptosporiopsis sp. em maçãs e minimização de perdas. Os experimentos foram realizados em Vacaria-RS, nos ciclos 2006/07 e 2007/08. Na fase de dormência de macieiras Pink Lady®, foram aplicados os seguintes tratamentos erradicantes (dose p.i.: calda sulfocálcica (3,0%; oxicloreto de cobre (0,5%; hidróxido de cobre (0,3%; óxido cuproso (0,3% e testemunha sem pulverização. A redução do inóculo foi avaliada em solução oriunda da lavagem de ramos, gemas floríferas e frutos, semeados em meio semisseletivo. Na colheita, a incidência da POB foi avaliada em quatro categorias de frutos: caídos sob a área de projeção da copa; nas plantas; infecções latentes, e após três meses de armazenamento em câmara frigorífica. Houve relação linear positiva entre os níveis de inóculo de Cryptosporiopsis sp. em gemas e os danos por POB (R² = 0,948; P = 0,001. O uso da calda sulfocálcica possibilitou a maior redução de inóculo nas gemas, com redução em 50% dos danos totais ocasionados por POB na safra de 2006/07. Nos frutos, o inóculo apresentou um incremento linear ao longo do ciclo, sendo relativamente maior em 2007/08, onde os tratamentos erradicantes possibilitaram controle superior a 40% nos danos com benefício econômico pela redução do inóculo.

  2. POLA KONSUMSI PANGAN DAN ASUPAN ENERGI DAN ZAT GIZI ANAK STUNTING DAN TIDAK STUNTING 0—23 BULAN

    Directory of Open Access Journals (Sweden)

    Aslis Wirda Hayati

    2013-10-01

    menganalisis pola konsumsi pangan dan asupan energi dan gizi anak stunting dan tidak stunting 0—23 bulan menggunakan data Riskesdas 2010. Sub-set data Riskesdas 2010 diperoleh dalam bentuk e-files. Dari 6 634 data anak baduta dalam e-files Riskesdas 2010, sejumlah 3 539 data anak dikeluarkankarena data tidak lengkap, pencilan, konsumsi pangan saat kondisi tidak biasa. Status gizi diolah menggunakan WHO AntroPlus 2007, pengolahan data lainnya menggunakan program Microsoft Excel 2007 dan SPSS for windows. Uji beda pola konsumsi pangan menerapkan Mann-Whitney U test. Pola konsumsi pangan dan asupan energi dan zat gizi yang diukur berupa jumlah jenis konsumsi pangan, jumlah kelompok konsumsi pangan, frekuensi konsumsi pangan, tingkat kecukupan zat gizi, mutu gizi asupan pangan, dan densitas asupan zat gizi. Hasil kajian menunjukkan pola konsumsi pangan dan asupan energi dan zat gizi anak stunting dan tidak stunting 0—23 bulan berbeda menurut kelompok umur; semakin bertambah umur semakin meningkat perbedaannya. Pada anak 0—5 bulan tidak ada perbedaan pola konsumsi pangan dan asupan energi dan gizi anak stunting dan tidak stunting; sebaliknya pada anak 6—11 dan 12—23 bulan. Pada anak 6—11 bulan, rata-rata tingkat kecukupan protein anak stunting dan tidak stunting berbeda, demikian pula densitas asupan protein.Pada anak 12—23 bulan, tidak hanya rata-rata tingkat kecukupan protein dan densitas asupan protein, tetapi rata-rata tingkat kecukupan energi, tingkat kecukupan kalsium dan densitas asupan kalsium, tingkat kecukupan fosfor, tingkat kecukupan vitamin A, tingkat kecukupan vitamin C, mutu gizi makanan, dan bahkan jenis pangan juga berbeda. Implikasi untuk Indonesia yaitu perlu dilakukan penelitian efikasi intervensi zat gizi tersebut untuk pencapaian pertumbuhan linier optimal anak.Kata kunci: anak usia 0—23 bulan, pola konsumsi pangan, stunting

  3. KONSTRUKSI DETERMINAN DALAM FRASA NOMINA BAHASA PRANCIS DAN BAHASA INDONESIA

    Directory of Open Access Journals (Sweden)

    Roswita Lumban Tobing

    2012-06-01

    Full Text Available Artikel ini bertujuan untuk memaparkan konstruksi determinan pada frasa nomina bahasa Perancis dan bahasa Indonesia. Analisis yang digunakan adalah analisis kontrastif. Hasil analisis menunjukkan bahwa nomina bahasa Perancis memiliki jenis kelamin (maskulin/feminin dan jumlah (tunggal/jamak. Gender dan jumlah dalam bahasa Prancis memiliki aturan konkordansi yang dapat memengaruhi bentuk dan makna nomina. Dalam bahasa Indonesia, meskipun nomina memiliki konsep gender tunggal dan jamak, jenis dan jumlah dalam bahasa Indonesia tidak muncul secara eksplisit. Bentuk ini hanya ditandai dengan karakteristik semantik tertentu yang dapat menunjukkan jenis kelamin, bentuk tunggal, dan bentuk jamak.

  4. Kandidiasis di Mulut akibat Khemoterapi dan Penatalaksanaannya

    Directory of Open Access Journals (Sweden)

    Sri Budiarti Wonso Hardjono

    2016-10-01

    Full Text Available Latar belakang: kandidiasis (kandidosis adalah infeksi jamur yang disebabkan oleh spesies Candida biasanya Candida albicans. Faktor predisposisi yang memicu kandidiasis adalah terganggunya ekologi mulut karena antara lain pemakaian antibiotika, kortikosteroid, penyakit kronis dan keganasan, beberapa gangguan darah; terapi radiasi di leher dan kepala; khemoterapi; leukimia, obat sitotoksik, juga kebersihan mulut yang buruk. Tujuan: melaporkan kasus kandidiasis di mulut karena khemoterapi dan penatalaksanaannya. Kasus dan penatalaksanaannya: seorang anak laki-laki umur 3 tahun 11 bulan penderita Leukimia Limfoblastik Akut (LLA sedang dalam perawatan khemoterapi menderita kandidiasis di mulut sehingga mengalami disfoni dan disfagia. Makanan dimasukkan lewat hidung. Klinis pasien terlihat lemah infus lewat tangan. Dalam mulut terlihat patch putih tebal menutupi permukaan dorsal dan ventral lidah, palatum durum dan ventral lidah, palatum durum dan molle, mukosa pipi kanan kiri dan gingiva rahang atas dan bawah. Pasien disedasi untuk dilakukan pengerokan lapisan kandida di mulut; pemberian Nystatin solution dan ketokonazol dilanjutkan. Pengerokan psedomembran kandidiasis telah memberikan hasil yang memuaskan, satu minggu kemudian rongga mulut pasien sudah terlihat bersih, pasien sudah dapat makan minum melalui mulut, juga sudah dapat berbicara lagi/tidak serah. Kesimpulan: Pembersihan jamur dengan pengerokan telah dilakukan, kandidiasis pseudomembran dapat diangkat dan mulut pasien sudah bersih, pasien dapat makan dan berbicara lagi.   Background: Candidiasis (candidosis is an fungal infection caused by Candida species usually Candida albicans. Predisposing factors which trigger candidiasis are the ecological disruption caused by use of oral antibiotics, corticosteroids, malignancy and chronic disease; some blood disorders; head and neck radiation; chemotherapy; leukimia, cytotoxic drugs, as well as poor oral hygiene. Aim: To report a case of

  5. Numerical and Experimental Study on the Combustion and Emission Characteristics of a Dimethyl Ether (DME Fueled Compression Ignition Engine Études numériques et expérimentales sur les caractéristiques de combustion et d’émissions d’un éther diméthylique (EDM- moteur à auto-allumage rempli de combustible

    Directory of Open Access Journals (Sweden)

    Kim Hyung Jun

    2012-05-01

    Full Text Available A numerical investigation was carried out to study on the combustion and emission characteristics of dimethyl ether (DME with wide ranges of injection timings in compression ignition engines. In order to simulate DME combustion processes, a KIVA-3V code coupled with a chemistry solver was used to solve the detailed chemical kinetics model of DME oxidation. In addition, the Kelvin-Helmholtz-Rayleigh-Taylor (KH-RT hybrid breakup model and Renormalization Group (RNG k-ε  models were applied to analyze the spray characteristics and turbulent flow, respectively. To predict the NOx formation during DME combustion, a reduced Gas Research Institute (GRI NO mechanism was used. From these results on the combustion and emission, the calculated results were compared with experimental ones for the same operating conditions. In the combustion characteristics, the calculated combustion pressure and heat release rates agreed well with experimental results. The levels of experimental NOx emissions was reduced as the start of the injection timing retarded, and also these trends appeared in calculated emission characteristics. Additionally, the calculated CO and HC emissions show an increasing trend as the start of the injection is retarded. Dans cette étude, nous considérons la simulation de la combustion du dimethyl ether (DME dans un moteur à allumage par compression. Les caractéristiques de la combustion ainsi que les émissions polluantes sont analysées sur une large gamme d’avance à l’injection. Afin de simuler le processus de combustion du EDM, le code KIVA-3V couplé à un solveur chimique a été utilisé pour résoudre la cinétique détaillée de l’oxydation du EDM. Le modèle de rupture de Kelvin-Helmholtz-Rayleigh- Taylor (KH-RT ainsi que le modèle de turbulence k-ε  RNG ont été appliqués pour analyser respectivement les caractéristiques du jet et l’écoulement turbulent. Pour prévoir la formation de NOx pendant la combustion

  6. Restauration et conservation des « trésors » cachés dans le cavalier de bronze

    Directory of Open Access Journals (Sweden)

    Myriam Kriche

    2012-04-01

    Full Text Available La rénovation en novembre 2004 de la statue équestre de Henri IV située sur le Pont-Neuf à Paris a permis d’en retirer sept boîtes constituées de bois de cèdre, de buis et de plomb ou d’étain qui renfermaient divers documents. Près de deux siècles séparent la pose des boîtes dans la statue des découvertes réalisées en 2004. Ce long séjour dans des conditions inadaptées n’a pas été sans conséquence pour la conservation des documents. Le Département de la conservation des Archives nationales a décidé de les restaurer et de les conserver comme des objets archéologiques empreints d’une histoire peu commune.The restoration in November 2004 of the equestrian statue of Henri IV located on the Pont-Neuf in Paris enabled the withdrawal of seven boxes of cedar wood, boxwood and lead or tin which contained various documents. Nearly two centuries passed between the placement of the boxes in the statue and the discoveries made in 2004. This long period in unsuitable conditions had its consequences on the conservation of the documents. The Department of conservation of the National Archives decided to restore them and preserve them as archaeological artifacts imprinted with an unusual history.

  7. PERSEPSI NEGATIF PASIEN KANKER PAYUDARA DAN KOLOREKTAL TERHADAP KEMOTERAPI DAN RADIOTERAPI DI RUMAH SAKIT DI KOTA DENPASAR, BALI

    Directory of Open Access Journals (Sweden)

    Gede Wara Samsarga Samsarga

    2015-01-01

    Full Text Available Terapi adjuvan yang biasanya diberikan pada pasien kanker payudara dan kanker kolorektal adalah kemoterapi dan radioterapi. Terapi adjuvan biasanya diberikan setelah terapi primer untuk meningkatkan angka kesembuhan penyakit, mencegah rekurensi, dan membunuh sel-sel kanker yang tersisa ataupun yang telah bermetastasis (terutama mikrometastasis. Terapi adjuvan juga berfungsi sebagai terapi paliatif untuk meningkatkan harapan hidup pasien kanker. Dalam kenyataannya banyak pasien kanker, khususnya kanker payudara dan kolorektal yang menghindari tindakan kemoterapi dan radioterapi. Dari 38 orang pasien kanker payudara dan kolorektal, didapatkan bahwa 26,3% takut gagal, 39,5% takut efek samping, 7,9% biaya yang mahal, 10,5% karena berlangsung dalam jangka waktu yang lama, dan 15,8% tidak takut terhadap kemoterapi dan radioterapi. Hasil penelitian ini menunjukkan bahwa tingkat pemahaman pasien kanker payudara dan kanker kolorektal terhadap tindakan kemoterapi dan radioterapi masih cukup rendah dimana 68,4% sampel tidak tahu dan tidak mengerti tentang tindakan kemoterapi dan radioterapi. Pemahaman yang kurang tentang tindakan kemoterapi dan radioterapi ini nantinya dapat mengakibatkan timbulnya persepsi negatif terhadap tindakan kemoterapi dan radioterapi. Maka dari itu sangat diperlukan adanya suatu edukasi yang baik bagi setiap pasien tentang penyakit dan modalitas terapi yang akan diberikan. Dokter diharapkan mampu untuk mengubah persepsi negatif pasien terkait tindakan kemoterapi dan radioterapi.  

  8. Low Temperature Combustion Demonstrator for High Efficiency Clean Combustion

    Energy Technology Data Exchange (ETDEWEB)

    Ojeda, William de

    2010-07-31

    The project which extended from November 2005 to May of 2010 demonstrated the application of Low Temperature Combustion (LTC) with engine out NOx levels of 0.2 g/bhp-hr throughout the program target load of 12.6bar BMEP. The project showed that the range of loads could be extended to 16.5bar BMEP, therefore matching the reference lug line of the base 2007 MY Navistar 6.4L V8 engine. Results showed that the application of LTC provided a dramatic improvement over engine out emissions when compared to the base engine. Furthermore LTC improved thermal efficiency by over 5% from the base production engine when using the steady state 13 mode composite test as a benchmark. The key enablers included improvements in the air, fuel injection, and cooling systems made in Phases I and II. The outcome was the product of a careful integration of each component under an intelligent control system. The engine hardware provided the conditions to support LTC and the controller provided the necessary robustness for a stable combustion. Phase III provided a detailed account on the injection strategy used to meet the high load requirements. During this phase, the control strategy was implemented in a production automotive grade ECU to perform cycle-by-cycle combustion feedback on each of the engine cylinders. The control interacted on a cycle base with the injection system and with the Turbo-EGR systems according to their respective time constants. The result was a unique system that could, first, help optimize the combustion system and maintain high efficiency, and secondly, extend the steady state results to the transient mode of operation. The engine was upgraded in Phase IV with a Variable Valve Actuation system and a hybrid EGR loop. The impact of the more versatile EGR loop did not provide significant advantages, however the application of VVA proved to be an enabler to further extend the operation of LTC and gain considerable benefits in fuel economy and soot reduction. Finally

  9. Oxy-coal Combustion Studies

    Energy Technology Data Exchange (ETDEWEB)

    Wendt, J. [Univ. of Utah, Salt Lake City, UT (United States); Eddings, E. [Univ. of Utah, Salt Lake City, UT (United States); Lighty, J. [Univ. of Utah, Salt Lake City, UT (United States); Ring, T. [Univ. of Utah, Salt Lake City, UT (United States); Smith, P. [Univ. of Utah, Salt Lake City, UT (United States); Thornock, J. [Univ. of Utah, Salt Lake City, UT (United States); Y Jia, W. Morris [Univ. of Utah, Salt Lake City, UT (United States); Pedel, J. [Univ. of Utah, Salt Lake City, UT (United States); Rezeai, D. [Univ. of Utah, Salt Lake City, UT (United States); Wang, L. [Univ. of Utah, Salt Lake City, UT (United States); Zhang, J. [Univ. of Utah, Salt Lake City, UT (United States); Kelly, K. [Univ. of Utah, Salt Lake City, UT (United States)

    2012-01-06

    The objective of this project is to move toward the development of a predictive capability with quantified uncertainty bounds for pilot-scale, single-burner, oxy-coal operation. This validation research brings together multi-scale experimental measurements and computer simulations. The combination of simulation development and validation experiments is designed to lead to predictive tools for the performance of existing air fired pulverized coal boilers that have been retrofitted to various oxy-firing configurations. In addition, this report also describes novel research results related to oxy-combustion in circulating fluidized beds. For pulverized coal combustion configurations, particular attention is focused on the effect of oxy-firing on ignition and coal-flame stability, and on the subsequent partitioning mechanisms of the ash aerosol.

  10. Steady state HNG combustion modeling

    Energy Technology Data Exchange (ETDEWEB)

    Louwers, J.; Gadiot, G.M.H.J.L. [TNO Prins Maurits Lab., Rijswijk (Netherlands); Brewster, M.Q. [Univ. of Illinois, Urbana, IL (United States); Son, S.F. [Los Alamos National Lab., NM (United States); Parr, T.; Hanson-Parr, D. [Naval Air Warfare Center, China Lake, CA (United States)

    1998-04-01

    Two simplified modeling approaches are used to model the combustion of Hydrazinium Nitroformate (HNF, N{sub 2}H{sub 5}-C(NO{sub 2}){sub 3}). The condensed phase is treated by high activation energy asymptotics. The gas phase is treated by two limit cases: the classical high activation energy, and the recently introduced low activation energy approach. This results in simplification of the gas phase energy equation, making an (approximate) analytical solution possible. The results of both models are compared with experimental results of HNF combustion. It is shown that the low activation energy approach yields better agreement with experimental observations (e.g. regression rate and temperature sensitivity), than the high activation energy approach.

  11. Fundamental studies of spray combustion

    Energy Technology Data Exchange (ETDEWEB)

    Li, S.C.; Libby, P.A.; Williams, F.A. [Univ. of California, San Diego, CA (United States)

    1997-12-31

    Our research on spray combustion involves both experiment and theory and addresses the characteristics of individual droplets and of sprays in a variety of flows: laminar and turbulent, opposed and impinging. Currently our focus concerns water and fuel sprays in two stage laminar flames, i.e., flames arising, for example from a stream of fuel and oxidizer flowing opposite to an air stream carrying a water spray. Our interest in these flames is motivated by the goals of reducing pollutant emissions and extending the range of stable spray combustion. There remains considerable research to be carried out in order to achieve these goals. Thus far our research on the characteristics of sprays in turbulent flows has been limited to nonreacting jets impinging on a plate but this work will be extended to opposed flows with and without a flame. In the following we discuss details of these studies and our plans for future work.

  12. SPECIFIC EMISSIONS FROM BIOMASS COMBUSTION

    Directory of Open Access Journals (Sweden)

    Pavel Skopec

    2014-02-01

    Full Text Available This paper deals with determining the specific emissions from the combustion of two kinds of biomass fuels in a small-scale boiler. The tested fuels were pellets made of wood and pellets made of rape plant straw. In order to evaluate the specific emissions, several combustion experiments were carried out using a commercial 25 kW pellet-fired boiler. The specific emissions of CO, SO2 and NOx were evaluated in relation to a unit of burned fuel, a unit of calorific value and a unit of produced heat. The specific emissions were compared with some data acquired from the reference literature, with relatively different results. The differences depend mainly on the procedure used for determining the values, and references provide no information about this. Although some of our experimental results may fit with one of the reference sources, they do not fit with the other. The reliability of the references is therefore disputable.

  13. Fluidized bed coal combustion reactor

    Science.gov (United States)

    Moynihan, P. I.; Young, D. L. (Inventor)

    1981-01-01

    A fluidized bed coal reactor includes a combination nozzle-injector ash-removal unit formed by a grid of closely spaced open channels, each containing a worm screw conveyor, which function as continuous ash removal troughs. A pressurized air-coal mixture is introduced below the unit and is injected through the elongated nozzles formed by the spaces between the channels. The ash build-up in the troughs protects the worm screw conveyors as does the cooling action of the injected mixture. The ash layer and the pressure from the injectors support a fluidized flame combustion zone above the grid which heats water in boiler tubes disposed within and/or above the combustion zone and/or within the walls of the reactor.

  14. The FCF Combustion Integrated Rack: Microgravity Combustion Science Onboard the International Space Station

    Science.gov (United States)

    OMalley, Terence F.; Weiland, Karen J.

    2002-01-01

    The Combustion Integrated Rack (CIR) is one of three facility payload racks being developed for the International Space Station (ISS) Fluids and Combustion Facility (FCF). Most microgravity combustion experiments will be performed onboard the Space Station in the Combustion Integrated Rack. Experiment-specific equipment will be installed on orbit in the CIR to customize it to perform many different scientific experiments during the ten or more years that it will operate on orbit. This paper provides an overview of the CIR, including a description of its preliminary design and planned accommodations for microgravity combustion science experiments, and descriptions of the combustion science experiments currently planned for the CIR.

  15. Experimental Investigations on a Novel Chemical Looping Combustion Configuration Étude expérimentale d’une nouvelle configuration de combustion en boucle chimique

    Directory of Open Access Journals (Sweden)

    Yazdanpanah M.M.

    2011-04-01

    minimale d’energie. Un transporteur d’oxygene est utilise pour le transfert de l’oxygene en continu du “reacteur air” vers le “reacteur fioul” ou l’oxygene est apporte au combustible. Ainsi, le contact direct entre l’air et le combustible est evite. Le gaz resultant est riche en CO2 et n’est pas dilue avec de l’azote. Le transporteur d’oxygene reduit est ensuite transporte vers le reacteur air afin d’etre re-oxyde, formant ainsi une boucle chimique. Diverses configurations CLC ont deja ete developpees et testees a l’echelle laboratoire. Cependant, des travaux de recherche supplementaires sont necessaires pour garantir la faisabilite du procede. Parmi les differents points a aborder, le controle du debit de circulation du solide entre les deux reacteurs est de la plus haute importance, notamment en ce qui concerne son impact sur l’apport en oxygene et le degre d’oxydation du solide. Aussi la reduction des fuites de gaz entre le reacteur fioul et le reacteur air est un autre point important a prendre en consideration. Dans cette etude, une nouvelle configuration de CLC est proposee ou les reactions sont effectuees dans deux lits fluidises bouillonnants interconnectes. Le controle du debit de circulation du solide est realise independamment du debit de gaz de fluidisation des reacteurs en utilisant des vannes pneumatiques non-mecaniques. Les siphons sont egalement employes pour reduire au mieux les fuites de gaz lors du transfert solide. Les resultats experimentaux obtenus dans une maquette froide equivalente a un pilote de 10 kWth sont presentes dans ce travail. L’impact des parametres operatoires sur le taux de circulation du solide, des fuites de gaz entre les deux lits et l’equilibre des pressions sur l’ensemble des elements du systeme est etudie. Une circulation stable du solide a ete obtenue grace a un controle maitrise du debit du solide et une etancheite efficace du systeme.

  16. CSIR helps prevent spontaneous combustion

    Energy Technology Data Exchange (ETDEWEB)

    Vuuren, M. van (CSIR Energy Technology (South Africa))

    1992-03-01

    Heaps of stockpiled coal could present a fire hazard due to the risk of spontaneous combustion. Regular monitoring of stockpiles and bunker testing of coals help to prevent stockpile fires. This brief article describes the recent upgrading of the CSIR's bunker test facility that enables coal producers, users and exporters to test their products under simulated conditions that duplicate the actual conditions under which coal is stored. 2 photos.

  17. Radiation/Catalytic Augmented Combustion.

    Science.gov (United States)

    1980-09-01

    NATIO& NAk H(fJI At tl TANUAHTOb 19 A ~omm.81-0287 LVL RADIATION/CATALYTIC AUGMENTED COMBUST ION MOSHE LAVID CORPORATE RESEARCH-TECHNOLOGY FEASIBILITY...refinements as necessary. i. Perform cannular combustor experiments to Investigate ignition and flame attachment in flowing, liquid -fuel, unpremixed...stabilizer, with a sintered metal disk on the downstream side through which hot gases or products of partial fuel oxidation can be passed. Experimental

  18. Laser Optics/Combustion Diagnostics.

    Science.gov (United States)

    1986-07-01

    been demonstrated. CARS measurements of axial and 0.12 radial temperature profiles in a highly sooting flame compared favorably with profiles...of Number-Density Equation ’Eckbreth. A.C. and Hatt. R.., "CARS Thermomrry in a The third-order susceptibility can be rewritten to show its Sooting ... Flame ." Combustion and Homie, Vol. 36. 1979, pp. 87-98. explcitdepndece ponthenumer ensty Roh. %W.B.. "Coherent Anti-Stokcs Raman Scattering ofexpici

  19. ABB Combustion Engineering nuclear technology

    Energy Technology Data Exchange (ETDEWEB)

    Matzie, R.A.

    1994-12-31

    The activities of ABB Combustion Engineering in the design and construction of nuclear systems and components are briefly reviewed. ABB Construction Engineering continues to improve the design and design process for nuclear generating stations. Potential improvements are evaluated to meet new requirements both of the public and the regulator, so that the designs meet the highest standards worldwide. Advancements necessary to meet market needs and to ensure the highest level of performance in the future will be made.

  20. Vortex Simulation of Turbulent Combustion

    Science.gov (United States)

    1992-11-19

    TURBULENT COMBUSTION (AFOSR Grant No. 89-0491) Principal Investigator: Ahmed F. Ghoniem Department of Mechanical Engineering Massachusetts Institute of...Heavy Industries, Nagoya, Japan.(talk and discussion). 17. 1990, Mazda Motor Co., Yokohama, Japan, (talk and discussion). 18. 1990, American Math Society...VORTICITY LAYERS UNDER NON-SYMMETRIC CONDITIONS Omar M. Kniot and Ahmed F. Ghoniem Department of Mechanical Engineering Massachusetts Institute of

  1. Nitrogen release during coal combustion

    Energy Technology Data Exchange (ETDEWEB)

    Baxter, L.L.; Mitchell, R.E.; Fletcher, T.H.; Hurt, R.H.

    1995-02-01

    Experiments in entrained flow reactors at combustion temperatures are performed to resolve the rank dependence of nitrogen release on an elemental basis for a suite of 15 U.S. coals ranging from lignite to low-volatile bituminous. Data were obtained as a function of particle conversion, with overall mass loss up to 99% on a dry, ash-free basis. Nitrogen release rates are presented relative to both carbon loss and overall mass loss. During devolatilization, fractional nitrogen release from low-rank coals is much slower than fractional mass release and noticeably slower than fractional carbon release. As coal rank increases, fractional nitrogen release rate relative to that of carbon and mass increases, with fractional nitrogen release rates exceeding fractional mass and fractional carbon release rates during devolatilization for high-rank (low-volatile bituminous) coals. At the onset of combustion, nitrogen release rates increase significantly. For all coals investigated, cumulative fractional nitrogen loss rates relative to those of mass and carbon passes through a maximum during the earliest stages of oxidation. The mechanism for generating this maximum is postulated to involve nascent thermal rupture of nitrogen-containing compounds and possible preferential oxidation of nitrogen sites. During later stages of oxidation, the cumulative fractional loss of nitrogen approaches that of carbon for all coals. Changes in the relative release rates of nitrogen compared to those of both overall mass and carbon during all stages of combustion are attributed to a combination of the chemical structure of coals, temperature histories during combustion, and char chemistry.

  2. M. Quraish Shihab dan Rasionalisasi Tafsir

    Directory of Open Access Journals (Sweden)

    Afrizal Nur

    2012-06-01

    Full Text Available Kesempurnaan Islam adalah karena bersumberkan kepada al-Qur’an dan Sunnah, kedua sumber ini melahirkan peraturan atau popular dengan istilah syari’at. Islam menuntut umat nya untuk mendalami dan menghayati ayat-ayat yang terkandung didalam kitab suci al-Qur’an karena mempunyai maksud tersendiri, maka oleh karena nya tafsir mengambil peranan yang strategis untuk memahami dan mengungkap rahasia keagungan khazanah pada setiap ayat al-Qur’an. Berdasar motifasi tinggi untuk memahami al-Qur’an, banyak ulama di Indonesia yang berkosentrasi untuk menjelaskan dan menafsirkan al-Qur’an, dalam sejrah aktifitas penafsiran al-Qur’an berawal dari Syeikh Abdurra’uf al-Singkli pada abad ke 17M sampai saat ini adalah era nya M.Quraish Shihab. Tokoh tafsir yang terakhir ini tidak pernah absent dan ketinggalan di kaji dan di analisa oleh para komunitas akademisi tafsir baik dalam bentuk kajian kritik ataupun mendukung pencapaian prestasi kitab tafsir yang diberi nama al-Mishbah ini. Kritikan yang selalu dapat perhatian utama akademisi tafsir meliputi pandangan-pandangan rasional Quraish Shihab yang sering kali menjadi tidak rasional disebabkan tidak mengikuti dan menyalahi pandangan jumhur ulama. Oleh sebab itu penulis tidak ingin ketinggalan menyumbangkan pemikiran dalam bentuk usaha intelektual alah kadarnya yang dimiliki untuk menempatkan tafsir al-Mishbah kemartabat yang tinggi di tangga samudera karya tafsir ulama tafsir Indonesia

  3. FAKTOR PERSONAL DAN SITUASIONAL PENERIMAAN PESAN DAKWAH

    Directory of Open Access Journals (Sweden)

    Enung Asmaya

    2017-02-01

    Full Text Available The da’wa messages are not necessarily able to subdue mad’u. Subjugation and readiness of mad’u is influenced by personal and situational factors which are always intertwined in giving rulings behavior. Personal factors is surrounding the biological and sociopsychological aspects. Biological aspects such as needs and aspects sociopsychological human basic form of the condition and cognitive, affective and psychomotor of mad’u. The situational factors may include environmental systems, culture, norms, architectural design and the like. Social situation is also part of the reason for mad’u to accept or reject the message of da’wa.   Pesan dakwah tidak serta-merta dapat menundukkan mad’u. Penundukan dan kesiapan mad’u dipengaruhi faktor personal dan situasional yang senantiasa berkelindan dalam memberikan putusan-putusan perilaku. Faktorfaktor personal melingkupi aspek biologis dan sosiopsikologis. Aspek biologis berupa kebutuhan-kebutuhan dasar manusia dan aspek sosiopsikologis berupa kondisi dan kemampuan kognitif, afeksi dan konasi mad’u. Adapun faktor situasional dapat berupa sistem lingkungan, budaya, norma, design arsitektur dan sejenisnya. Kondisi sosial juga menjadi alasan mad’u dalam menerima atau menolak pesan dakwah.

  4. APA DAN MANA DALAM KALIMAT DEKLARATIF

    Directory of Open Access Journals (Sweden)

    Sri Puji Astuti

    2016-06-01

    Full Text Available Kalimat merupakan salah satu sarana untuk menyampaikan maksud pembicara atau penulis kepada pendengar atau pembaca. Untuk menyampaikan informasi digunakan kalimat deklaratif. Dalam kalimat deklaratif sering ditemui kata apa dan mana serta bentuk turunannya. Bagaimana kehadiran apa dan mana serta bentuk turunannya dalam kalimat deklaratif dibahas dalam makalah ini. Teori yang digunakan untuk menganalisis adalah teori stuktural. Pengumpulan data dilakukan dengan cara menyimak pemakaian bahasa. Dalam analisis data digunakan metode distribusional yaitu metode analisis data yang berupa penghubungan aantarfenomena dalam bahasa tertentu itu sendiri  Adapun teknik yang d.igunakan dalam penelitian ini adalah teknik delisi, substitusi, dan teknik parafrasa. Dari hasil penelitian disimpilkan  bahwa apa dan mana serta bentuk tuturannya jika terdapat dalam kalimat deklaratif bukan merupakan interogativa. Kehadiran apa dan mana serta bentuk tuturannya dalam kalimat deklaratif ada yang bersifat wajib ada yang bersifat opsional. Apa dan mana serta bentuk turunannya  bersifat opsional jika dalam kalimat deklaratif apa dan mana serta bentuk tuturannya diikuti atau didahului oleh kata yang mempunyai makna yang sama

  5. Combustion char characterisation. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Rosenberg, P.; Ingermann Petersen, H.; Sund Soerensen, H.; Thomsen, E.; Guvad, C.

    1996-06-01

    The aim was to correlate reactivity measures of raw coals and the maceral concentrates of the coals obtained in a previous project with the morphology of the produced chars by using a wire grid devolatilization method. Work involved determination of morphology, macroporosity and a detailed study by Scanning Electron Microscopy (SEM). Systematic variations in the texture of chars produced in different temperature domains and heating rates were demonstrated by using incident light microscopy on polished blocks and by SEM studies directly on the surfaces of untreated particles. Results suggest that work in the field of char reactivity estimates and correlations between char morphology and coal petrography can be accomplished only on chars produced under heating rates and temperatures comparable to those for the intended use of coal. A general correlation between the coals` petrography and the the morphology of high temperature chars was found. The SEM study of the chars revealed that during the devolatilization period the particles fuse and the macroporosity and thus the morphotypes are formed. After devolatilization ceases, secondary micropores are formed. These develop in number and size throughout the medium combustion interval. At the end of the combustion interval the macrostructure breaks down, caused by coalescence of the increased number of microspores. This can be observed as a change in the morphology and the macroporosity of the chars. Results indicate that char reactivity is a function of the macroporosity and thus the morphology of combustion chars. (AB) 34 refs.

  6. Demonstration of Active Combustion Control

    Science.gov (United States)

    Lovett, Jeffrey A.; Teerlinck, Karen A.; Cohen, Jeffrey M.

    2008-01-01

    The primary objective of this effort was to demonstrate active control of combustion instabilities in a direct-injection gas turbine combustor that accurately simulates engine operating conditions and reproduces an engine-type instability. This report documents the second phase of a two-phase effort. The first phase involved the analysis of an instability observed in a developmental aeroengine and the design of a single-nozzle test rig to replicate that phenomenon. This was successfully completed in 2001 and is documented in the Phase I report. This second phase was directed toward demonstration of active control strategies to mitigate this instability and thereby demonstrate the viability of active control for aircraft engine combustors. This involved development of high-speed actuator technology, testing and analysis of how the actuation system was integrated with the combustion system, control algorithm development, and demonstration testing in the single-nozzle test rig. A 30 percent reduction in the amplitude of the high-frequency (570 Hz) instability was achieved using actuation systems and control algorithms developed within this effort. Even larger reductions were shown with a low-frequency (270 Hz) instability. This represents a unique achievement in the development and practical demonstration of active combustion control systems for gas turbine applications.

  7. Combustion instability modeling and analysis

    Energy Technology Data Exchange (ETDEWEB)

    Santoro, R.J.; Yang, V.; Santavicca, D.A. [Pennsylvania State Univ., University Park, PA (United States)] [and others

    1995-10-01

    It is well known that the two key elements for achieving low emissions and high performance in a gas turbine combustor are to simultaneously establish (1) a lean combustion zone for maintaining low NO{sub x} emissions and (2) rapid mixing for good ignition and flame stability. However, these requirements, when coupled with the short combustor lengths used to limit the residence time for NO formation typical of advanced gas turbine combustors, can lead to problems regarding unburned hydrocarbons (UHC) and carbon monoxide (CO) emissions, as well as the occurrence of combustion instabilities. Clearly, the key to successful gas turbine development is based on understanding the effects of geometry and operating conditions on combustion instability, emissions (including UHC, CO and NO{sub x}) and performance. The concurrent development of suitable analytical and numerical models that are validated with experimental studies is important for achieving this objective. A major benefit of the present research will be to provide for the first time an experimentally verified model of emissions and performance of gas turbine combustors.

  8. Modeling the internal combustion engine

    Science.gov (United States)

    Zeleznik, F. J.; Mcbride, B. J.

    1985-01-01

    A flexible and computationally economical model of the internal combustion engine was developed for use on large digital computer systems. It is based on a system of ordinary differential equations for cylinder-averaged properties. The computer program is capable of multicycle calculations, with some parameters varying from cycle to cycle, and has restart capabilities. It can accommodate a broad spectrum of reactants, permits changes in physical properties, and offers a wide selection of alternative modeling functions without any reprogramming. It readily adapts to the amount of information available in a particular case because the model is in fact a hierarchy of five models. The models range from a simple model requiring only thermodynamic properties to a complex model demanding full combustion kinetics, transport properties, and poppet valve flow characteristics. Among its many features the model includes heat transfer, valve timing, supercharging, motoring, finite burning rates, cycle-to-cycle variations in air-fuel ratio, humid air, residual and recirculated exhaust gas, and full combustion kinetics.

  9. HASIL ANALISIS VITAMIN A DAN β-KAROTEN BAHAN MAKANAN SUMBER VITAMIN A DAN KAROTEN DENGAN METODE HPLC

    Directory of Open Access Journals (Sweden)

    Yuniar Rosmalina

    2012-11-01

    Full Text Available Telah dilakukan analisis vitamin A DAN β-Karoten terhadap beberapa jenis pangan dengan menggunakan metode HPLC. Analisis dilakukan terhadap 9 jenis serealia dan umbi-umbian, 3 jenis kacang-kacangan, 40 jenis sayuran, 11 jenis daging dan hasilnya, 7 jenis telur dan hasilnya, 8 jenis ikan, 12 jenis buah-buahaan, dan 7 jenis kelompok lain-lain. Hasilnya menunjukkan sumber β-Karoten yang tinggi pada kelompok serealia dan umbi-umbian adalah umbi jalar, pada kelompok sayuran adalah daun katuk, daun pepaya, daun singkong, daun melinjo, daun talas dan daun sintrong, pada kelompok telur adalah telur bebek, pada kelompok buah-buahan adalah mangga golek dan mangga gedong. Sedangkan kelompok kacang-kacangan dan kelompok daging kandungan β-Karotennya rendah. Hati ayam, hati bebek, dan hati kambing merupakan sumber vitamin A yang tinggi, sedangkan pada kelompok ikan didapati ikan lele mempunyai kandungan vitamin A yang lebih tinggi dibandingkan jenis ikan lainnya.

  10. Sistem Komputerisasi Pengolahan Buku Induk Pegawai Pada UPT Dinas Pendidikan Pemuda Dan Olahraga Kecamatan Banjarmangu Berbasis PHP Dan MYSQL

    Directory of Open Access Journals (Sweden)

    Elisa Usada

    2011-11-01

    Full Text Available Permasalahan yang akan dibahas adalah bagaimana membuat sistem pengolahan buku induk pegawai di UPT Dinas Pendidikan Pemuda dan Olahraga Kecamatan Banjarmangu berbasis PHP dan MySQL. Sistem pengolahan buku induk pegawai  berbasis PHP dan MySQL ini dirancang komputerisasi menggunakan PHP dan database MySQL dengan tujuan agar pengolahan data pegawai di UPT Dinas Pendidikan Pemuda dan Olahraga Kecamatan Banjarmangu dapat terpusat. Metode penelitian yang digunakan adalah menggunakan metode waterfall. Sistem pengolahan buku induk pegawai ini menggunakan jaringan client server dan dapat diakses oleh administrator dan Kepala UPT dan Pegawai. Kelebihan dari sistem pengolahan ini adalah dilindungi password dan hak akses yang berbeda untuk setiap user sehingga keamanan data dapat terjamin, sedangkan kekurangannya adalah program yang dihasilkan belum maksimal karena mengkhususkan data pegawai pada buku induk saja. Saran dari sistem pengolahan ini yaitu pengembangan dari segi keamanan data, kelengkapan data, dan ketelitian sistem dalam input data untuk mengurangi kesalahan.

  11. Perancangan dan Implementasi Presensi Digital Guru dan Karyawan SMA Negeri 9 Semarang

    Directory of Open Access Journals (Sweden)

    Th. Didot Septiawan

    2016-04-01

    Full Text Available Berdasarkan surat edaran dari Kepala Dinas Pendidikan Kota Semarang, terhitung mulai Januari 2015 tiap sekolah dihimbau untuk beralih dari sistem presensi manual menjadi digital. Hingga awal Maret ini, presensi guru dan karyawan di SMA Negeri 9 Semarang masih dilakukan secara manual. Maka diperlukan sebuah penelitian untuk merancang dan menerapkan sistem presensi digital bagi SMA Negeri 9 Semarang. Tahapan penelitian meliputi perencanaan, analisis, perancangan, implementasi, pengujian, dan pemeliharaan. Perangkat lunak dibangun dengan framework PHP Phalcon, basis data MySQL, dan aplikasi webserver Nginx pada sistem operasi Ubuntu 14.04. Mesin presensi dengan metode pengenalan wajah dipilih untuk mendapatkan data kehadiran yang bersifat autentik. Pengujian dilakukan dengan metode kotak hitam dan kotak putih. Semua kebutuhan fungsional telah diimplementasikan pada aplikasi web dan kebutuhan non-fungsional pun telah terpenuhi. Sistem presensi digital ini menjadi solusi bagi SMA Negeri 9 Semarang dalam usaha uji coba penggunaan presensi digital.

  12. TINJAUAN UMUM TENTANG HELPDESK DAN FRAMEWORK TERKAIT

    Directory of Open Access Journals (Sweden)

    Ali Tarmuji

    2013-04-01

    Full Text Available Penggunaan teknologi informasi dan komunikasi (TIK di suatu instansi sangat banyak dampaknya, baik positif maupun negatif. Seiring perkembangan teknologi semakin banyak pemanfaatan media TIK ini untuk membantu pelaksanaan suatu pekerjaan bahkan hampir seluruh bidang di suatu instansi. Dalam perjalanan penggunaan TIK sering muncul permasalahan-permasalahan yang jika tidak ditangani akan mengakibatkan adanya kemunduran kinerja dari bagian/seseorang yang menggunakan peralatan TIK untuk menunjang kerja mereka. Suatu instansi yang sudah sedemikian kompleksnya dalam penggunaan peralatan TIK di instansinya maka diperlukan suatu mekanisme dan unit khusus yang menangani penggunaan dan permasalahan dalam hal penggunaan TIK tersebut. Mekanisme dan unit khusus tersebut sering dinamakan tim helpdesk yang tujuan utamanya adalah menangani penyelesaian terhadap permasalahan yang muncul dari penggunaan suatu peralatan TIK tersebut sehingga mampu memperlancar kerja yang terkait. Suatu instansi dalam hal penerapan tim helpdesk memerlukan suatu perencanaan yang matang dan terorganisir. Langkah-langkah yang perlu dilakukan oleh instansi dalam implementasi tim helpdesknya antara lain, (1 membentuk tim khusus untuk menganalisis organisasinya terkait kebutuhan implementasi helpdesk tersebut, (2 membentuk organisasi helpdesk sesuai kebutuhan, (3 memilih workflow helpdesk yang disesuaikan dengan kondisi instansi, (4 memilih framework yang tepat untuk mendasari jalannya implementasi helpdesk di instansi terkait, dan (5 menuangkan aturan-aturan dasar (standard operation procedur-SOP untuk menguatkan kiprah tim helpdesk di instansi terkait.Terbentuknya tim helpdesk diharapkan dapat mengatasi permasalahan dan memberikan layanan terhadap seluruh permasalahan bidang TIK baik yang bersifat internal (pengembang aplikasi maupun seluruh permasalahan operasional aplikasi ataupun hal-hal yang berhubungan dengan sistem dan teknologi informasi dan komunikasi.

  13. COMBUSTION SIMULATION IN A SPARK IGNITION ENGINE CYLINDER: EFFECTS OF AIR-FUEL RATIO ON THE COMBUSTION DURATION

    OpenAIRE

    2010-01-01

    Combustion is an important subject of internal combustion engine studies. To reduce the air pollution from internal combustion engines and to increase the engine performance, it is required to increase combustion efficiency. In this study, effects of air/fuel ratio were investigated numerically. An axisymmetrical internal combustion engine was modeled in order to simulate in-cylinder engine flow and combustion. Two dimensional transient continuity, momentum, turbulence, energy, and combustion...

  14. Penskalaan Butir Format Respons Pilihan dan Respons Bebas Berdasarkan Model Rasch dan Partial Credit

    Directory of Open Access Journals (Sweden)

    Eko Hariadi

    2007-06-01

    Full Text Available Penelitian melihat pengaruh jumlah parameter butir, kategori respons bebas (RB, pengaruh sampel terhadap akurasi estimasi parameter kemampuan untuk menghasilkan estimasi yang stabil dan pengaruh pembobotan butir RP dan butir RB terhadap kesalahan baku. Penelitian dalam dua tahap, simulasi menggunakan 30 kondisi dengan replikasi 50 dengan variabel panjang tes, jumlah kategori, dan jumlah parameter butir, dan analisis deskriptif, dilanjutkan penerapan penskalaan gabungan butir tipe respons pilihan (rp dan butir respons bebas (rb pada konstruksi tes elektronika yang terdiri 40 butir pilihan ganda dan 4 butir jawaban tersusun, 3 butir memiliki lima kategori jawaban dan 1 butir dengan 4 kategori jawaban, melibatkan 355 siswa. Hasil penelitian menunjukkan: ukuran sampel kurang berpengaruh pada root mean square error atau (RSME> dan korelasi antara 9 dengan 0, namun berpengaruh terhadap akurasi estimasi parameter butir pilihan ganda (/>/y,dan parameter butir respons tersusun (3^- Jumlah parameter butir berpengaruh terhadap parameter kemampuan, tetapi tidak berpengaruh terhadap akurasi dari b^, dan S„,. Estimasi dari parameter tingkat kesulitan butir jawaban tersusun tiga kategori lebih akurat daripada butir jawaban tersusun lima kategori. Estimasi tahan {robust untuk parameter kesulitan butir jawaban tersusun 5 kategori memerlukan sampel minimal 250 responden, sedangkan untuk butir respons tersusun 3 kategori memerlukan sampel minimal 100 responden. Estimasi parameter kemampuan dari skor total (0^^ tidak sama dengan rata-rata jumlah tbeta dari masing-masing subtes (0^ + 0CR. Theta dari tes yang dikalibrasi bersama-sama berbeda dengan theta dari total subtes yang dikalibrasi secara terpisah. Korelasi kemampuan yang mengunakan pembobotan dan kemampuan tanpa pembobotan mempunyai suatu rentang dari 0,988 sampai 0,948. Kata kunci: penyekaiaan, model rash dan partial credit.

  15. Evaluasi Layanan Sirkulasi dan Layanan Pengguna Pada Kantor Perpustakaan, Kearsipan dan Dokumentasi Nias Utara

    OpenAIRE

    Zalukhu, Radius Seantero

    2016-01-01

    Tujuan penelitian ini adalah untuk mengetahui layanan perpustakaan pada kantor perpustakaan, kearsipan dan dokumentasi kabupaten Nias Utara. Penelitian yang dilakukan di Kantor Perpustakaan, Kearsipan dan Dokumenstasi Kabupaten Nias Utara, yang beralamat di Jl. Gunung Sitoli – Lehewa Km 42 Lotu, menitik beratkan pada layanan sirkulasi, layanan pengguna serta layanan koleksi. Metode Penelitian menggunakan metode deskriptif. Instrument yang digunakan dalam penelitian ini adalah kuesioner dan st...

  16. ANEMIA DAN ANEMIA GIZI BESI PADA KEHAMILAN: HUBUNGANNYA DENGAN ASUPAN PROTEIN DAN ZAT GIZI MIKRO

    OpenAIRE

    Nur Handayani Utami; Bunga CH. Rosha

    2015-01-01

    Anemia masih menjadi permasalahan kesehatan pada wanita hamil. Zat besi dianggap sebagai salah satu zat gizi mikro yang berperan terhadap terjadinya anemia. Kekurangan gizi besi dalam tingkat lanjut dapat menyebabkan anemia, yang disebut sebagai anemia gizi besi. Tujuan studi ini adalah untuk menganalisis perbedaan antara asupan protein dan gizi mikro serta menghitung odd ratio (OR) kejadian anemia dan anemia gizi besi akibat asupan protein dan gizi mikro pada wanita hamil di lokasi studi. An...

  17. Status Oral Higiene Dan Periodontal Pada Pasien Diabetes Melitus Dan Non- Diabetes Di RSUD Dr. Pirngadi

    OpenAIRE

    Butar-Butar, Mardiah Rizqo

    2014-01-01

    Diabetes melitus adalah penyakit gangguan metabolisme ditandai dengan meningkatnya kadar gula darah yang terjadi karena kelainan sekresi insulin, kerja insulin, atau kedua-duanya. Diabetes melitus merupakan salah satu penyakit sistemik yang berperan sebagai faktor risiko penyakit periodontal. Penelitian ini bertujuan untuk mengetahui status oral higiene dan periodontal dan odd rasio periodontitis pada pasien Diabetes melitus dan non-Diabetes. Rancangan penelitian adalah case-control. Popul...

  18. Pencahayaan Buatan pada Pendekatan Teknis dan Estetis untuk Bangunan dan Ruang Dalam

    OpenAIRE

    Budi Setiawan; Grace Hartanti

    2014-01-01

    Cahaya merupakan hal yang penting bagi manusia dan makhluk hidup lainnya. Tanpa cahaya atau penerangan tentu sulit untuk beraktivitas, terutama saat hari menjelang malam. Seiring berkembangnya peradaban dan teknologi, manusia menciptakan pencahayaan buatan. Awalnya, pencahayaan buatan sebagai pengganti sinar alami matahari, lalu cahaya buatan yang didapat dari api, kemudian penelitian dan pengembangan bola lampu oleh Alessandro Volta, Sir Humphry Davy, Warren De La Rue, hingga Tho...

  19. Perencanaan Pemerintah Kabupaten Kudus Dalam Mempersiapkan Pengalihan Pajak Bumi dan Bangunan Sektor Perdesaan dan Perkotaan Sebagai Pajak Daerah

    Directory of Open Access Journals (Sweden)

    Vitriana Masfita

    2013-08-01

    Full Text Available Penelitian ini dilatarbelakangi oleh terbitnya Undang-undang Nomor 28 Tahun 2009 tentang Pajak Daerah dan Retribusi Daerah, Pemerintah Pusat mengalihkan kewenangan pengelolaan Pajak Bumi dan Bangunan sektor Perdesaan dan Perkotaan kepada Pemerintah Daerah. Oleh karena itu, Pemerintah Daerah harus mempersiapkan segala keperluan agar proses pengalihan ini berjalan dengan lancar. Tujuan penelitian ini adalah untuk mendeskripsikan dan menganalisis (1 rencana pemerintah Kabupaten Kudus dalam persiapan pengambilalihan Pajak Bumi dan Bangunan Sektor Perkotaan dan Perdesaan, (2 faktor-faktor yang mempengaruhi persiapan Pemerintah Kabupaten Kudus dalam pengalihan Pajak Bumi dan Bangunan Sektor Perkotaan. Penelitian ini merupakan penelitian kualitatif deskriptif dengan menggunakan data-data kualitatif berupa kata-kata, tindakan dan dokumen. Teknik pengumpulan data yang digunakan adalah interview dengan Kepala DPPKD Kabupaten Kudus beserta Kepala Bidang, Kepala Seksi dan Staff, observasi partisipasi di DPPKD Kabupaten Kudus, dan studi dokumentasi dokumen kedinasan di DPPKD Kabupaten Kudus. Data diperoleh melalui Analisis data menggunakan model Miles dan Huberman. Hasil Penelitian: (1 Pemerintah Kabupaten kudus berencana untuk mempersiapkan Sarana dan Prasarana yang meliputi penyediaan ruang pelayanan, ruang server dan pengolahan data, pengadaan perlengkapan gedung kantor, pengadaan software dan hardware komputer, pengadaan barang cetakan; membentuk UPT Pelayananan Pajak Daerah; mempersiapkan personel dibidang IT, pelayanan pajak daerah, administrasi pajak daerah; membentuk Peraturan Daerah dan Peraturan Bupati terkait Pajak Bumi dan Bangunan; menyiapkan SOP; menjalin kerjasama dengan KPP Pratama dan Bank Jateng; membuka rekening PBB P2 di Bank Jateng.  (2 Faktor pendukung dari proses perencanaan Pemerintah Kabupaten Kudus adalah: tersedianya dana atau pembiayaan, partisipasi SKPD terkait, serta partisipasi dari Kantor Pelayanan Pajak Pratama dan Bank

  20. DIAMETER SERAT DAN PANJANG SARKOMER DAGING SAPI BALI HASIL PENGGEMUKAN MENGGUNAKAN PAKAN DENGAN LEVEL KULIT BIJI KAKAO DAN OTOT BERBEDA

    OpenAIRE

    2015-01-01

    2015 NUR AMALIA (I111 11 271). Diameter Serat dan Panjang Sarkomer Daging Sapi Bali Hasil Penggemukan Menggunakan Pakan dengan Level Kulit Biji Kakao dan Otot Berbeda. Dibawah bimbingan Hikmah M. Ali sebagai pembimbing utama, dan Ratmawati Malaka sebagai pembimbing anggota. Penelitian ini bertujuan untuk mengetahui pengaruh jenis otot, level kulit biji kakao dalam pakan, dan interaksi keduanya terhadap panjang sarkomer dan diameter serat daging sapi Bali. Penelitian ini ...