Relevant bibliographies by topics / Compound numbers

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Compound numbers'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Compound numbers.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Compound numbers"

1

Biswas, Ranjit. "Birth of Compound Numbers." Turkish Journal of Analysis and Number Theory 2, no. 6 (January 22, 2016): 208–19. http://dx.doi.org/10.12691/tjant-2-6-4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Eichenauer-Herrmann, Jürgen, and Eva Herrmann. "Compound cubic congruential pseudorandom numbers." Computing 59, no. 1 (March 1997): 85–90. http://dx.doi.org/10.1007/bf02684405.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Eichenauer-Herrmann, J�rgen. "Compound nonlinear congruential pseudorandom numbers." Monatshefte f�r Mathematik 117, no. 3-4 (September 1994): 213–22. http://dx.doi.org/10.1007/bf01299703.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Kushnir, D. V., S. N. Shemyakin, and G. A. Orlov. "SOME ASPECTS OF SCREENING COMPOUND NUMBERS." Vestnik Sankt-Peterburgskogo gosudarstvennogo universiteta tekhnologii i dizaina. Seriya 1: Estestvennye i tekhnicheskie nauki, no. 1 (2020): 25–28. http://dx.doi.org/10.46418/2079-8199_2020_1_4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Keyser, Paul T. "Compound Numbers and Numerals in Greek." Syllecta Classica 26, no. 1 (2015): 113–75. http://dx.doi.org/10.1353/syl.2015.0002.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Ramos, J. I. "Compound liquid jets at low Reynolds numbers." Polymer 43, no. 9 (April 2002): 2889–96. http://dx.doi.org/10.1016/s0032-3861(02)00086-1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Eichenauer-Herrmann, Jürgen, Frank Emmerich, and Gerhard Larcher. "Average Discrepancy, Hyperplanes, and Compound Pseudorandom Numbers." Finite Fields and Their Applications 3, no. 3 (July 1997): 203–18. http://dx.doi.org/10.1006/ffta.1997.0180.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Eichenauer-Herrmann, Jürgen, and Gerhard Larcher. "Average Behaviour of Compound Nonlinear Congruential Pseudorandom Numbers." Finite Fields and Their Applications 2, no. 1 (January 1996): 111–23. http://dx.doi.org/10.1006/ffta.1996.0008.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Eichenauer-Herrmann, J. "Explicit inversive congruential pseudorandom numbers: the compound approach." Computing 51, no. 2 (June 1993): 175–82. http://dx.doi.org/10.1007/bf02243851.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Pedroso, Luma A., Vicente P. Campos, Aline F. Barros, Júlio C. Justino, and Letícia L. de Paula. "Activity against Meloidogyne incognita of volatile compounds produced during amendment of soil with castor bean cake." Nematology 22, no. 5 (June 15, 2020): 505–14. http://dx.doi.org/10.1163/15685411-00003319.

Full text
Abstract:
Summary Incorporation of castor bean cake into the soil results in the emission of four main compounds: skatole, γ-decalactone, 4-methylphenol and phenol. The toxic effects of these compounds on the life cycle of Meloidogyne incognita were studied here. Only phenol did not reduce hatching of M. incognita second-stage juveniles (J2) at any of the concentrations tested. The other compounds reduced J2 hatching by 42.1 to 59.3% at the highest concentrations. When J2 were immersed in Tween 80® solutions of each compound, at their respective LC50 values and inoculated into soil with tomato plants, reductions in the numbers of galls (48.5-69.3%) and eggs (42.8-62.5%) were observed in comparison with the control; this result was similar to that of carbofuran. The highest reductions in the numbers of galls (21.8-88.5%) and eggs (49.6-98.9%) occurred with all compounds when the highest concentration (500 mg l−1) was applied to the substrate at the moment of J2 inoculation. Volatile compounds of γ-decalactone and skatole failed to cause J2 immobility or mortality. However, phenol caused 95.8% and 4-methylphenol caused 100% mortality. With fumigation, the highest concentration (1000 mg (l substrate)−1) of any tested compound reduced gall numbers at a similar rate to the nematicide dazomet (98.7-100%) and reduced egg numbers (87.1-99.7%). The volatile compounds skatole, γ-decalactone, 4-methylphenol and phenol have a nematicidal effect on the life cycle of M. incognita and alter its pathogenic behaviour on the plant.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Compound numbers"

1

Oginni, Babatunde M. "Study Of Nuclear Level Densities From Evaporation Of Compound Nuclei Of Mass Numbers 61, 64, 65, And 82." Ohio University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1241791753.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Zhang, Yujie. "Atmospheric measurements and degradation mechanisms of a number of volatile organic compounds." Thesis, Orléans, 2012. http://www.theses.fr/2012ORLE2048.

Full text
Abstract:
Les composés organiques carbonylés et les BTEX (Benzène, Toluène, Éthylbenzène et Xylènes) représentent une classe importante de composés organiques volatils dans l’atmosphère. Ils sont émis par des sources anthropogénique et biogéniques. Leur dégradation atmosphérique conduit à la formation d’ozone, de phooxidants et d’aérosols organiques affectant ainsi la qualité de l’air aux échelles locales et régionales ainsi que la santé humaine. Il est donc important de mesurer leurs concentrations et évaluer leur devenir atmosphérique. Dans la présente thèse, nous avons conduit une étude systématique qui a permis de mesurer les concentrations de ces composés et identifier leurs sources à Pékin (Juillet 2008-Août 2010) et évaluer l’importance des caractéristiques météo. Nous avons aussi mené des études sur la dégradation atmosphérique de trois formates (isoproyle, isobutyle et n-propyle) en utilisant la chambre de simulation atmosphérique d’ICARE (CNRS, Orléans)
Carbonyls and BTEX (Benzene, Toluene, Ethylbenzene, and Xylenes) represent an important class of VOCs (volatile organic compounds) in the atmosphere. They are emitted into the atmosphere through anthropogenic and biogenic sources. Their atmospheric degradation leads to the formation of ozone, photooxidants and organic aerosols affecting the air quality at the local and regional scales and human health. It is, hence, of importance to measure their atmospheric concentrations and investigate their fate. In the present thesis, we have conducted a systematic measurement study of carbonyls and BTEX in Beijing during the period of Jul 2008-Aug 2010 in order to evaluate their ambient levels, possible sources and the influence of characteristic weather conditions. In a separate work, we performed a series of experimental studies on the OH-initiated oxidation of isopropyl formate, isobutyl formate, and n-propyl isobutyrate using the ICARE-CNRS (Orleans) simulation chamber from which we derived the product yields. The data obtained are presented and discussed
APA, Harvard, Vancouver, ISO, and other styles
3

Tse, Hiu Wah. "Hydrothermal synthesis of metal carboxylate polymers using high coordination number metals /." View abstract or full-text, 2004. http://library.ust.hk/cgi/db/thesis.pl?CHEM%202004%20TSE.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Habtu, Michael M. "A study of the transport, extraction and co-ordination chemistry of a number of thiourea ligands with a series of transition and post-transition metal ions." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/97374.

Full text
Abstract:
Thesis (MSc)--Stellenbosch University, 2003.
ENGLISH ABSTRACT: In this study, a number of mono- and di-substituted acyl(aroyl)thioureas were investigated for potential application as specific carriers (ionophores) for the transport and extraction of Ag(l) from a mixture of Co(II), Ni(II), Cu(II), Zn(II), Cd(II), and Pb(lI) ions. The experimental arrangement for the transport experiments employed a liquid membrane set up involving a 3-phase system - 2 aqueous phases (source and receiving phase) separated by a chloroform membrane incorporating the ligand. Competitive metal ion transport experiments were conducted using the liquid membrane set up. The aqueous source and receiving phases were analyzed using Atomic Absorption Spectroscopy (AAS) and results were confirmed by Inductively Coupled Plasma-Optical Emission Spectroscopy (ICPOES). The transport results show that the N,N-dialkyl-substituted-N'-acyl(aroyl) (HL) thioureas studied, with the exception of the N,N-di-(2-hydroxyethyl)-N'-benzoylthiourea (HL3 ) and N-piperidyl-N'-4-nitrobenzoylthiourea (HL9 ), were efficient and selective for Ag(I). HL9 was also selective for Ag(l) but not efficient. HL3 was selective for Cu(II). Under the experimental conditions employed, 13% Cu(lI) was transported by HL3 . Among the N,Ndialkyl- N'-aroylthioureas, maximum Ag(l) transport was obtained by using N,N-diethyl-N'-4- chlorobenzoylthiourea (HL5 ) and N,N-di-n-butyl-N'-benzoylthiourea (HL \ Under the experimental conditions employed, the percentages of Ag(l) transported by HL5 and HL 1 were 48% and 42% respectively. The transport selectivity and efficiency of 3,3,3' ,3'-tetraethyl-1 ,1'-isophthaloylbisthiourea (H2L12 ) and N,N-diethyl-N'-camphanoylthiourea (HL13)for Ag(l) were also studied. We were particularly interested, in comparing the Ag(l) transport and extraction efficiency of these ligands with that of the HL and H2L ligands. The experimental results reveal that, of all the ligands we investigated in this study, HL 13 was the most efficient and selective carrier for Ag(l) transport. The interesting result is that, depending on the ligand concentration used, HL 13 transported 71-81% of Ag(I). Competitive two-phase metal ion solvent extraction experiments were also performed under conditions similar to the transport studies. The results show that by varying the ligand concentration in the membrane phase, up to 100% Ag(l) can be selectively and efficiently extracted from the mixture of the seven metal ions. Finally, the N,N-di-(n)-butyl-N'-benzoylthiourea (HL1) ligand and its complex with Ag(l) were synthesized. Single crystals of the complex were grown for X-ray crystallography and the crystal and molecular structure of the complex was determined. The crystal structure showed that Ag(l) is bonded to the deprotonated ligand through the S,O atoms forming interesting cluster [Ag (L - S, 0)] 4 in the solid state. This structure is monoclinic and crystallizes in the space group P21!c with a = 17.805 (4) A, b = 21.759 (4) A, c = 36.438 (7) A, f3= 96.34(3)°, Z = 8 and a final R-factor of 5.4%.
AFRIKAANSE OPSOMMING: In hierdie proefskrif is 'n aantal mono- en di-gesubstitueerde asiel(ariel) tioureums ondersoek vir moontlike gebruik as ionofore (spesifieke draers) vir die transportasie en ekstraksie van Ag(l) vanuit 'n mengsel van Co(ll), Ni(II), Cu(II), Zn(II), Cd(II), Ag(l) en Pb(lI) ione. 'n Drie-fase selsisteem is gebruik vir die transportasie eksperimente, twee waterige fases (bron- en ontvang-fase) wat geskei is met die chloroform membraan fase wat die ligande bevat. Kompeterende metaalioon transportasie eksperimente is uitgevoer met behulp van hierdie vloeistof membraan stelsel. Die twee waterige fases is deur middel van Atoomabsorpsie Spektroskopie (AAS) ge-analiseer en resultate is bevestig met gebruik van Induktief-gekoppelde Plasma-Optiese Emissie Spektroskopie (IGP-OES). Die resultate het getoon dat elkeen van die N,N-dialkiel-gesubstitueerde-N'-asiel(ariel) (HL) tioureums, met uitsondering van N,N-di(2-hidroksie-etiel)-N'-benzieltioureum(HL 3) en Npiperidiel- N'-4-nitrobenzieltioureum(HL9 ), doeltreffend en selektief was vir Ag(l) transportasie. HL9 was selektief vir Ag(I), maar die transportasie waarde was nie hoog nie, dws. dit was nie doeltreffend nie. HL3 was selektief vir Cu(II). Met gebruik van ons eksperimentele kondisies is 13% Cu(lI) getransporteer deur HL 3. Van die N,N-dialkiel-N'- ariel tioureums, is maksimum transportasie van Ag(l) verkry met gebruik van N,N-dietiel- N'-4-chlorobenzieltioureum (HL5) en N,N-di-n-butiel-N'-benzieltioureum (HL1). Met gebruik van ons eksperimentele kondisies was die persentasie transportasie van Ag(l) deur HL5 en HL 1 48% en 42% onderskeidelik. Die selektiwiteit en doeltreffendheid van 3,3,3' ,3'-tetra-etiel-1 ,t-isoftaltelblstioureumtl+L 12) en N,N-di-etiel-N'-kamfonieltioureum (HL13) vir Ag(l) transportasie is ook onderneem. Ons was besonder ge-interesseerd om die Ag(l) transportasie en ekstraksie van hierdie ligande te vergelyk met dié van die HL en H2L tipe ligande. Die eksperimentele resultate het getoon dat van al die ligande wat bestudeer is, HL 13 die doeltreffendste en mees selektiewe ionofoor was. Van besondere, belang was dat, afhangend van die ligand konsentrasie wat gebruik is, HL13 71-81% Ag(l) getransporteer het. Kompeterende twee-fase metaalioon vloeistof-vloeistof ekstraksie eksperimente is ook uitgevoer onder toestande soortgelyk aan dié van die transportasie eksperimente. Die resultate toon dat met varierende ligand konsentrasie, tot soveel as 100% Ag(l) selektief en doeltreffend geëkstrakeer word vanuit 'n mengsel van die sewe metaal ione. N,N-di-n-butiel-N'-benzieltioureum (HL1 ) ligande en die kompleks daarvan met Ag(l) is ook gesintetiseer. Enkel-kristalle van die kompleks is verkry en X-straal kristallografiese analiese is onderneem. Die kristalstruktuur toon hoedat Ag(l) gebind is aan die gedeprotoneerde ligand deur die S en Q atome en toon ook interessante [Ag(L-S,Q)]4 groepe in die vaste toestand. Hierdie struktuur is monoklinies en kristaliseer in die ruimtegroep P21!c met a = 17.805(4) Á, b = 21.759(4)Á, c = 36.438(7)Á, P = 96.34(3t, z = 8 en 'n finale R-faktor van 5.4%.
APA, Harvard, Vancouver, ISO, and other styles
5

Sheng, Xia. "Competitive transport, extraction and coordination chemistry of a number of ligands with selected transition and post-transition metal ions." Thesis, Link to the online version, 2008. http://hdl.handle.net/10019/1488.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Vasudevamurthy, Madhusudan. "Betaine analogues and related compounds for biomedical applications." Thesis, University of Canterbury. Chemical and Process Engineering, 2006. http://hdl.handle.net/10092/1096.

Full text
Abstract:
Living cells accumulate compensatory solutes for protection against the harmful effects of extreme environmental conditions such as high salinity, temperature and desiccation. Even at high concentrations these solutes do not disrupt the normal cellular functions and at times counteract by stabilizing the cellular components. These properties of compensatory solutes have been exploited for stabilizing proteins and cells in vitro. Betaines are widespread natural compensatory solutes that have also been used in other applications such as therapeutic agents and polymerase chain reaction (PCR) enhancers. Some biomedical applications of novel synthetic analogues of natural betaines were investigated. Natural compensatory solutes are either dipolar zwitterionic compounds or polyhydroxyl compounds, and the physical basis of compensation may differ between these, so one focus was on synthetic betaines with hydroxyl substituents. The majority of the synthetic solutes stabilized different model proteins against stress factors such as high and low temperatures. The presence of hydroxyl groups improved protection against desiccation. The observed stabilization effect is not just on the catalytic activity of the enzyme, but also on its structural conformation. Synthetic compensatory solutes have a potential application as protein stabilizers. Dimethylthetin was evaluated as a therapeutic agent and found to be harmful in a sheep model. However, from the study we were able to generate a large-animal continuous ambulatory peritoneal dialysis (CAPD) model and showed that glycine betaine could be added to the dialysis fluid in chronic renal failure. Some synthetic compensatory solutes reduce the melting temperatures of DNA better than most natural solutes. Synthetic solutes were identified that have potential to enhance PCR and could replace some reagents marketed by commercial suppliers. Density, viscosity and molecular model data on the solutes showed correlations with the biochemical effects of the solutes, but no physical measurements were found that reliably predicted their potential for biotechnological applications.
APA, Harvard, Vancouver, ISO, and other styles
7

Rodas, Méndez Ana Lucía. "MtSUPERMAN controls the number of flowers per inflorescence and floral organs in the inner three whorls of Medicago truncatula." Doctoral thesis, Universitat Politècnica de València, 2021. http://hdl.handle.net/10251/171474.

Full text
Abstract:
[ES] Las leguminosas son un grupo de plantas consideradas de gran importancia por su valor nutricional para la alimentación humana y ganadera. Además, las familias de leguminosas se caracterizan por rasgos distintivos de desarrollo como su inflorescencia compuesta y su compleja ontogenia floral. Para comprender mejor estas características distintivas, es importante estudiar los genes reguladores clave involucrados en el desarrollo de la inflorescencia y la flor. El gen SUPERMAN (SUP) es un factor transcripcional de dedos de zinc (Cys2-Hys2) considerado como un represor activo que controla el número de estambres y carpelos en A. thaliana. Además, SUP está involucrado en la terminación del meristemo floral y el desarrollo de los tejidos derivados del carpelo. El objetivo principal de este trabajo fue la caracterización funcional del ortólogo de SUP en la leguminosa modelo Medicago truncatula (MtSUP). Logramos este objetivo en base a un enfoque de genética reversa, análisis de expresión génica y ensayos de complementación y sobreexpresión. Nuestros resultados muestran que MtSUP es el gen ortólogo de SUP en M. truncatula. MtSUP comparte algunos de los roles ya descritos para SUP con algunas variaciones. Curiosamente, MtSUP controla la determinación del meristemo inflorescente secundario (I2) y de los primordios comunes (CP) a pétalos y estambres. Por tanto, MtSUP controla el número de flores y de pétalos-estambres que producen el meristemo I2 y los primordios comunes, respectivamente. MtSUP muestra funciones novedosas para un gen de tipo SUP, desempeñando papeles clave en los meristemos que confieren complejidad de desarrollo a esta familia de angiospermas. Este trabajo permitió identificar a MtSUP, un gen clave que forma parte de la red reguladora genética que subyace al desarrollo de la inflorescencia compuesta y de las flores en la leguminosa modelo M. truncatula.
[CA] Les lleguminoses són un gran grup de plantes considerades de gran importància pel seu valor nutricional per a l'alimentació humana i ramadera. A més, les famílies de lleguminoses es caracteritzen per trets distintius de desenrotllament com la seua inflorescència composta i la seua complexa ontogènia floral. Per a comprendre millor estes característiques distintives, és important estudiar els gens reguladors clau involucrats en la inflorescència i el desenrotllament floral. El gen SUPERMAN (SUP) és un factor transcripcional de dits de zinc (Cys2-Hys2) considerat com un repressor actiu que controla el nombre d'estams i carpels en A. thaliana. A més, SUP està involucrat en la terminació del meristemo floral i el desenrotllament dels teixits derivats del carpel. "L'objectiu principal d'este treball va ser la caracterització funcional de l'ortòleg de SUP en la lleguminosa model Medicago truncatula (MtSUP) . Aconseguim l'objectiu amb base en un enfocament genètic invers, anàlisi d'expressió gènica i assajos de complementació i sobreexpressió. Els nostres resultats mostren que MtSUP és el gen ortòleg de SUP en M. truncatula. MtSUP compartix alguns dels rols ja descrits per a SUP amb variacions. Curiosament, MtSUP està involucrat en la determinació del meristemo de la inflorescència secundària (I2) i els primordios comuns (CP). Per tant, MtSUP controla el nombre de flors i pètals-estams que produïxen el meristemo I2 i els primordios comuns, respectivament. MtSUP mostra funcions noves per a un gen tipus SUP, exercint papers clau en els meristemos que conferixen complexitat de desenrotllament a esta família d'angiospermes. "Este treball va permetre identificar a MtSUP, un gen clau que forma part de la xarxa reguladora genètica darrere de la inflorescència composta i el desenrotllament de flors en la lleguminosa model M. truncatula.
[EN] Legumes are a large group of plants considered of great importance for their nutritional value in human and livestock nutrition. Besides, legume families are characterized by distinctive developmental traits as their compound inflorescence and complex floral ontogeny. For a better understanding of these distinctive features is important to study key regulatory genes involved in the inflorescence and floral development. The SUPERMAN (SUP) gene is a zinc-finger (Cys2-Hys2) transcriptional factor considered to be an active repressor that controls the number of stamens and carpels in A. thaliana. Moreover, SUP is involved in the floral meristem termination and the development of the carpel marginal derived tissues. The main objective of this work was the functional characterization of the SUP orthologue in the model legume Medicago truncatula (MtSUP). We achieved this objective based on a reverse genetic approach, gene expression analysis, and complementation and overexpression assays. Our results show that MtSUP is the orthologous gene of SUP in M. truncatula. MtSUP shares some of the roles already described for SUP with variations. Interestingly, MtSUP controls the determinacy of the secondary inflorescence (I2) meristem and the common primordia (CP). Thus, MtSUP controls the number of flowers and petal-stamens produced by the I2 meristem and the common primordia respectively. MtSUP displays novel functions for a SUP-like gene, playing key roles in the meristems that confer developmental complexity to this angiosperm family. This work allowed to identify MtSUP, a key gene that participates in the genetic regulatory network underlying compound inflorescence and flower development in the model legume M. truncatula.
I would like to thanks the Spanish Ministry of Economy and Competitiveness for the grant (MINECO; BIO2016-75485-R) that supported this work. Special thanks to the Generalitat Valenciana for funding my doctorate with the Santiago Grisolía predoctoral scholarships
Rodas Méndez, AL. (2021). MtSUPERMAN controls the number of flowers per inflorescence and floral organs in the inner three whorls of Medicago truncatula [Tesis doctoral]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/171474
TESIS
APA, Harvard, Vancouver, ISO, and other styles
8

Ramilo-Ríos, Pablo. "La comunidad de coleópteros saproxílicos en bosque mediterráneo: factores ambientales que condicionan sus ensambles." Doctoral thesis, Universidad de Alicante, 2018. http://hdl.handle.net/10045/86894.

Full text
Abstract:
Los insectos saproxílicos, que dependen de la presencia de madera muerta y/o en descomposición, de hongos de la madera, o bien de la presencia de otros organismos saproxílicos, en algún momento de su ciclo vital, desempeñan una función clave para el correcto funcionamiento de los ecosistemas de bosque, actuando como recicladores de los nutrientes contenidos en la madera en descomposición. La diversidad de insectos saproxílicos, y más concretamente de coleópteros, así como la estructura de los ensambles que conforman, se encuentran condicionadas por una serie de variables de carácter físico, químico y biótico. Comprender cómo este amplio conjunto de variables afecta a los patrones espacio-temporales de las comunidades, resulta esencial a la hora de elaborar estrategias de manejo de los ecosistemas, que permitan preservar este tipo de fauna, en muchas ocasiones, amenazada. Con este marco de fondo, el objetivo general de esta tesis doctoral reside en analizar el conjunto de factores ambientales que afectan a la diversidad y a la distribución espacio-temporal de los ensambles de coleópteros saproxílicos que habitan los bosques mediterráneos de roble melojo ubicados en el oeste de la península ibérica para, de este modo, poder proponer una serie de directrices a seguir, a la hora de manejar este tipo de ecosistemas. Este objetivo general se divide en una serie de objetivos específicos, cada uno de los cuales ha derivado en la redacción de un artículo científico y que pueden ser consultados de manera individualizada en los capítulos II, III y IV. En el capítulo II se evaluó la influencia de un total de 24 variables ambientales a nivel de paisaje y a nivel de árbol, muchas de ellas consecuencia del manejo tradicional del bosque en el oeste ibérico por parte del hombre, analizando la riqueza observada de especies y empleando los estimadores de diversidad verdadera. El estudio permitió demostrar que, son muchas las variables que deben ser tenidas en cuenta a la hora de aplicar estrategias de manejo de los ecosistemas forestales y que no todos los métricos empleados para evaluar la diversidad de los ensambles saproxílicos responden de la misma manera frente a esas variables derivadas del manejo. De acuerdo con los resultados obtenidos, es posible establecer una serie de recomendaciones para la gestión forestal de áreas sometidas a técnicas tradicionales de manejo: favorecer en cierta medida la apertura del medio, reducir la carga ganadera y la explotación de madera a nivel vecinal, mantener en el paisaje un elevado volumen de madera en avanzado estado de descomposición, realizar un trasmoche selectivo de cierta cantidad de árboles para acelerar la aparición de oquedades y conservar los denominados “árboles hábitat”, que presenten microhábitats potenciales para este tipo de fauna, ya sean oquedades o tumores. El capítulo III se centró en analizar la posible influencia de los factores abióticos de temperatura y humedad relativa, en los patrones intranuales mostrados por los ensambles de coleópteros saproxílicos que habitan los bosques de roble melojo en la península ibérica, tanto en términos de riqueza como de composición de especies. Además, se abordó el estudio del tamaño corporal, como un rasgo que puede afectar tanto a la fisiología como a la eficacia biológica (fitness) de las especies y que podría explicar, al menos en parte, la dinámica temporal de estos ensambles. Este estudio permitió demostrar que la dinámica temporal de los ensambles de coleópteros saproxílicos que habitan los bosques de roble en el oeste ibérico está condicionada, al menos en gran medida, por las fluctuaciones anuales de las variables abióticas de temperatura y humedad relativa. Considerando el marco actual de calentamiento global, el hecho de conocer cómo ambas variables abióticas afectan a la estructura y diversidad de estos ensambles, permitirá predecir algunas de las consecuencias que el cambio climático puede tener en la distribución temporal de estas comunidades faunísticas. Además, se observó que no todas las especies de coleópteros saproxílicos muestran la misma plasticidad a la hora de adaptarse a esas fluctuaciones de temperatura y que muchas de ellas pueden permanecer activas únicamente bajo un cierto rango térmico. En este sentido, se recomienda profundizar en el estudio de los rangos térmicos de las especies, ya que proporcionará información muy valiosa a la hora de tratar de entender los patrones temporales mostrados por estos ensambles. Finalmente, en el capítulo IV, se estudió la influencia que pueden tener las emisiones de compuestos orgánicos volátiles (COVs) por parte del roble melojo, en los ensambles de coleópteros saproxílicos que emplean esta especie arbórea como planta hospedadora. Para ello, se partió de la premisa de que los árboles añosos (generalmente de mayor tamaño y en un estado de descomposición avanzado) son más visitados por los insectos saproxílicos, que en el caso de los árboles más jóvenes (generalmente de menor porte y en un estado de descomposición nulo o poco avanzado); las emisiones de COVs podrían explicar, al menos en parte, ciertos aspectos de la etología de este grupo de insectos. A pesar de la ausencia de significación estadística, los resultados mostraron una tendencia clara, que indicó que los árboles de mayor porte (árboles añosos, en un estado de descomposición avanzado) emiten este tipo de compuestos con una mayor intensidad que los árboles de menor tamaño. Si tenemos en cuenta, además, que este estudio demostró que los árboles añosos, de mayor perímetro (generalmente en un estado de senescencia más avanzado) albergaron una mayor riqueza de especies de coleópteros saproxílicos, se llega a la conclusión de que la emisión de COVs debe ser tenida en cuenta como una variable más (dentro del amplio conjunto de las ya comentadas en apartados previos), que puede estar condicionando la dinámica espacio-temporal de los ensambles de coleópteros saproxílicos que habitan los bosques de roble melojo en la península ibérica. Este estudio abre una novedosa vía de investigación que permitirá profundizar en el estudio de la relación directa que puede existir entre los compuestos químicos emitidos por los árboles y la fauna saproxílica circundante.
APA, Harvard, Vancouver, ISO, and other styles
9

Nylén, Ulf. "Development of ring-opening catalysts for diesel quality improvement." Licentiate thesis, KTH, Chemical Engineering and Technology, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1712.

Full text
Abstract:

The global oil refining industry with its present shift inproduct distribution towards fuels such as gasoline and dieselwill most likely hold the fort for many years to come. However,times will change and survival will very much depend onprocessing flexibility and being at the frontiers of refiningtechnology, a technology where catalysts play leading roles.Today oil refiners are faced with the challenge to producefuels that meet increasingly tight environmentalspecifications, in particular with respect to maximum sulphurcontent. At the same time, the quality of crude oil is becomingworse with higher amounts of polyaromatics, heteroatoms(sulphur and nitrogen) and heavy metals. In order to staycompetitive, it is desirable to upgrade dense streams withinthe refinery to value-added products. For example, upgradingthe fluid catalytic cracking (FCC) by-product light cycle oil(LCO) into a high quality diesel blending component is a veryattractive route and might involve a two-step catalyticprocess. In the first step the LCO is hydrotreated andheteroatoms are removed and polyaromatics are saturated, in thesecond step naphthenic rings are selectively opened to improvethe cetane number of the final product.

The present research is devoted to the second catalytic stepof LCO upgrading and was carried out within the framework of aEuropean Union project entitled RESCATS.

From the patent literature it is evident that iridium-basedcatalysts seem to be good candidates for ring-opening purposes.A literature survey covering ring opening of naphthenicmolecules shows the need for extending investigations toheavier model substances, more representative of the dieselfraction than model compounds such as alkylated mono C5 and C6-naphthenic rings frequently employed in academic studies.

Ring-opening catalysts, mainly Pt-Ir based, were synthesisedat KTH by two different methods: the microemulsion and theincipient wetness methods. Characterization of the catalystswas performed using a number of techniques including TPR,TEM-EDX, AFM and XPS etc. Catalytic screening at atmosphericpressure using pure indan as model substance was utilized todetect ring-opening activity and the magnitude of selectivityto desired cetane-boosting products. The development of suchring-opening catalysts is the topic of Paper I.

When designing a catalytic system aimed at refiningpetroleum, it is crucial to monitor the evolution of thesulphur distribution throughout the different stages of theprocess so that catalyst properties and reaction parameters canbe optimised. The final section of this thesis and Paper II arethus devoted to high-resolution sulphur distribution analysisby means of a sulphur chemiluminescence detector (SCD).

Keywords:ring opening, naphthenes, cetane numberimprovement, indan, light cycle oil (LCO), Pt-Ir catalyst,catalyst characterization, aromatic sulphur compounds, GC-SCD,distribution, analysis.

APA, Harvard, Vancouver, ISO, and other styles
10

Jerónimo, Isabel Brandão. "Probabilidades de ruína e o modelo binomial." Master's thesis, Instituto Superior de Economia e Gestão, 2004. http://hdl.handle.net/10400.5/918.

Full text
Abstract:
Mestrado em Ciências Actuariais
Nesta dissertação, vamos apresentar o modelo binomial composto em tempo discreto e calcular probabilidades de ruína. Do ponto de vista da probabilidade de ruína em tempo finito, em vez de ter em linha de conta o instante temporal em que a ruína ocorre, estudamos a probabilidade da ruína ocorrer na n-ésima indemnizacão e o número de indem¬nizações ocorridas durante o período de recuperação do processo de risco. O nosso objectivo e, não só, obter resultados numéricos para estas probabilidades no modelo binomial como também conseguir aproximações às quantidades correspondentes no modelo clássico apresentadas em Egídio dos Reis (2002). A aproximação do processo contínuo ao processo discreto correspondente é feita através da discretização do processo de risco.
In this thesis, we present the discrete time compound binomial model and we consider a different approach concerning the probability of ruin in a finite horizon. Instead of taking into account the instant of ruin, we study the probability of ruin occurring at the n-th claim and the number of claims arriving during a recovery time period. Our purpose is, not only, to obtain numerical results for these probabilities in the bino¬mial model but also to get approximations for the corresponding quantities in the classical model presented by Egídio dos Reis (2002). The method used for the approximate calcu¬lation involves the discretization of the risk process.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Compound numbers"

1

Inc, Seroyal USA. UNDA numbered compounds guide. Wood Dale, IL: Seroyal, 2000.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Hong, Chew Soo. The rationality of accepting compounds of unattractive gambles. Toronto: Department of Economics, University of Toronto, 1987.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Faria, Dionilce Silva de. Vocabulário de palavras hifenizadas e pluralizadas. Niterói: Nitpress, 2011.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Meini, Monica. Nella terra dei melograni. Florence: Firenze University Press, 2006. http://dx.doi.org/10.36253/978-88-6453-260-8.

Full text
Abstract:
Northern Albania, the "land of the pomegranates", is a region where culture and nature are intimately bound up. This hypertext is proposed as an innovative tool of scientific divulgation for the valorisation of this precious and little-known territory, while also lending itself to various types of exploitation for tourist purposes. The itineraries, which radiate outwards from the city of Scutari, are presented through synthetic factsheets, composed using a simple and immediate language, and deriving from direct observation. Precisely because of its multiple functions, the hypertext has been organised at a number of levels: from simple description to historic and literary references or the reports of travellers, through to the detailing of the tourist resources available.
APA, Harvard, Vancouver, ISO, and other styles
5

Kubny, Alfons, Reimund Jotter, Hans-Jürgen Fachmann, B. Kalbskopf, and U. Nohl. Sulfur-Nitrogen Compounds: Compounds with Sulfur of Oxidation Number II. Springer, 1997.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Baumann, Norbert, Peter Merlet, Brigitte Heibel, Alfons Kubny, Gerhard Czack, Reimund Jotter, Joachim Wagner, and Hans-Jürgen Fachmann. S Sulfur-Nitrogen Compounds: Compounds with Sulfur of Oxidation Number IV. Springer, 1990.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Baumann, Norbert, Brigitte Heibel, Alfons Kubny, R. Bohrer, Reimund Jotter, Hans-Jürgen Fachmann, U. Nohl, Birgit Ledüc, U. Hettwer, and H. J. Richter-Ditten. S Sulfur-Nitrogen Compounds: Compounds with Sulfur of Oxidation Number IV. Springer, 2013.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Whitesell, Lloyd. Wonderful Design. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190843816.001.0001.

Full text
Abstract:
Glamour is an elusive aspect of cinematic style. This book critically examines previous scholarship on glamour; defines the concept as a compound of artifice, allure, and magic; and examines the phenomenon at work in the genre of the film musical. The focus is on the role of music in representing glamour, and the stylistic and semiotic conventions by which glamour is embodied in sound. The book develops an analytical framework that applies across media, the better to appreciate music’s collaborative role within multimedia spectacle. First, glamour is situated as one of a handful of “style modes” orienting stylistic treatment in musical numbers. Second, glamour is shown to blend four distinct aesthetic parameters: sensuousness, restraint, elevation, and sophistication. Instead of being interpreted in relation to film narrative, the musical number is treated as a semiautonomous locus of meaning and expression, with its own formal demands and the power to eclipse narrative logic. Dozens of musical numbers are analyzed, drawn from more than eighty films, exploring glamour from the perspectives of arranging and orchestrational technique, the fantasies awoken in the spectator, and the invocation of magical belief. Anticonsumerist critiques of glamour are evaluated alongside counterarguments upholding glamour’s transformative and sustaining potential. Concluding discussion shows how the musical genre has affinities with the hybrid aesthetic of “magical realism.”
APA, Harvard, Vancouver, ISO, and other styles
9

Compound Semiconductors 2001 (Institute of Physics Conference Series Number 170). Taylor & Francis, 2002.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Handbook of Data on Organic Compounds/Supplement I, Cas Number Index. CRC, 1989.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Compound numbers"

1

Fernandes da Silva, E. C. "GaxIn1–xAs: phonon wave numbers." In New Data and Updates for III-V, II-VI and I-VII Compounds, 147. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-540-92140-0_114.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Delange, Hubert. "On Products of Multiplicative Functions of Absolute Value at Most 1 Which are Composed with Linear Functions." In Analytic Number Theory, 245–63. Boston, MA: Birkhäuser Boston, 1996. http://dx.doi.org/10.1007/978-1-4612-4086-0_14.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Guirimov, B. G., and O. H. Huseynov. "A New Compound Function-Based Z-number Valued Clustering." In 13th International Conference on Theory and Application of Fuzzy Systems and Soft Computing — ICAFS-2018, 840–47. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-04164-9_110.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Pólya, G., and R. C. Read. "Asymptotic Evaluation of the Number of Combinations." In Combinatorial Enumeration of Groups, Graphs, and Chemical Compounds, 75–95. New York, NY: Springer New York, 1987. http://dx.doi.org/10.1007/978-1-4612-4664-0_5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Bshouty, Nader H., and Hanna Mazzawi. "Exact Learning Composed Classes with a Small Number of Mistakes." In Learning Theory, 199–213. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/11776420_17.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Strauch, D. "Ge: phonon frequencies, phonon wave numbers, phonon linewidths." In New Data and Updates for IV-IV, III-V, II-VI and I-VII Compounds, their Mixed Crystals and Diluted Magnetic Semiconductors, 455–58. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-14148-5_251.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Denny, Thomas F., and Volker Müller. "On the reduction of composed relations from the number field sieve." In Lecture Notes in Computer Science, 75–90. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/3-540-61581-4_43.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Ngo, Shyuan T., and Mark C. Bellingham. "Neurophysiological Recording of the Compound Muscle Action Potential for Motor Unit Number Estimation in Mice." In Stimulation and Inhibition of Neurons, 225–35. Totowa, NJ: Humana Press, 2012. http://dx.doi.org/10.1007/978-1-62703-233-9_13.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Oriakhi, Christopher O. "Atomic Structure and Isotopes." In Chemistry in Quantitative Language. Oxford University Press, 2009. http://dx.doi.org/10.1093/oso/9780195367997.003.0007.

Full text
Abstract:
John Dalton proposed his theory of the atom in 1808 based on experimental data and chemical laws known in his day. The theory states that: 1. All chemical elements are made up of tiny indivisible particles called atoms. 2. Atoms cannot be created or destroyed. Chemical reactions only rearrange the manner in which atoms are combined. 3. Atoms of the same element are identical in all respects and have the same masses and physical and chemical properties. Atoms of different elements have different masses as well as different physical and chemical properties. 4. Combination of elements to form a compound occurs between small, whole-number ratios of atoms. Dalton’s theory resulted in the formulation of the law of conservation of mass and the law of multiple proportions. In a chemical reaction matter is neither created nor destroyed. The mass of products is equal to the mass of the reactants. If two elements form more than one compound between them, the masses of one element that combine with a fixed mass of the second element are in a ratio of whole numbers. Nitrogen and oxygen combine to form different compounds such as NO, NO2, and N2O. According to this law the number of nitrogen to oxygen atoms in these compounds should be a simple ratio of two small whole numbers. This is one of the basic laws of stoichiometry, as we shall see in chapter 9. An atom consists of a central nucleus, which contains roughly 99.9% of the total mass of the atom, and a surrounding cloud of electrons. The nucleus is composed of two kinds of particles, the protons and the neutrons, which are collectively known as the nucleons. The proton is positively charged while the neutron is electrically neutral. The electrons have a negative charge and surround the nucleus in “shells” of definite energy levels. (Note: energy level will be discussed in chapter 10.) In a neutral (unreacted) atom, the number of electrons is equal to the number of protons, so the atom has a charge of zero.
APA, Harvard, Vancouver, ISO, and other styles
10

Hardin, Garrett. "Growth: Real and Spurious." In Living within Limits. Oxford University Press, 1993. http://dx.doi.org/10.1093/oso/9780195078114.003.0012.

Full text
Abstract:
One of the Rothschilds is credited with saying that "Compound interest is the eighth wonder of the world." How so? Because interest makes money grow, supposedly without limit. Ecologists regard the claim as arrant nonsense, for it implies a denial of Epicurean conservation. Like putative records of lifeless money in savings banks, real populations of living organisms grow by compound interest, but this biological reality does not move scientists to reverence. Biologists know that the growth of animals or plants does not violate conservation principles; biological growth merely involves the transfer of matter from the nonliving world to the living. Though new arrangements of matter— new chemical molecules—are created, the quantity of matter/energy remains the same. Before delving deeper into population theory (the topic of the next chapter) we need to see what scientific sense can be made of growth phenomena in the world of finance. In developing the argument there will be quite a bit of manipulation of numbers, but no great precision in numbers is called for. The conclusions reached will be robust, a curious academic word that means that the illustrative data can be varied over quite a wide range of values without affecting the practical conclusions. To accept compound interest at face value is to be confronted with an apparent creation of wealth. A bank account earning 5 percent compound interest per year doubles in value every 14 years. Let us indicate the initial deposit by D and time (in units of 14 years) by t. (For instance, when the number of years is 28, t = 2.) The value of the account at the end of time t is given by a simple equation: Since time (t) is written as an exponent of the number 2 we speak of this as an exponential equation and say that the value of the account grows exponentially. (There are other ways of representing the growth function, but they too involve exponents.) Figure 8-1 is a graph of the exponential growth of a bank account that draws compound interest.
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Compound numbers"

1

Bouland, Olivier. "SAMQUA — Quantum Numbers of Compound Nuclear States for R-Matrix Analyses." In INTERNATIONAL CONFERENCE ON NUCLEAR DATA FOR SCIENCE AND TECHNOLOGY. AIP, 2005. http://dx.doi.org/10.1063/1.1945036.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Knothe, Gerhard, Marvin O. Bagby, and Thomas W. Ryan. "Cetane Numbers of Fatty Compounds:Influence of Compound Structure and of Various Potential Cetane Improvers." In International Spring Fuels & Lubricants Meeting & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1997. http://dx.doi.org/10.4271/971681.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Bazdidi-Tehrani, Farzad, and Pegah Pezeshkpour. "Film Cooling Flow by Double Rows of Compound Angle and Compound Angle Shaped Holes." In ASME Turbo Expo 2013: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/gt2013-95272.

Full text
Abstract:
The present paper describes a three-dimensional finite volume numerical simulation of turbulent flow and heat transfer over a flat plate embedded with four different configurations of film cooling jet holes. Recently, more advanced techniques are introduced to improve the effectiveness of film cooling method such as the Compound Angle Shaped Holes (CASH). The first two studied configurations in this article comprise double rows of staggered compound angle holes. The presented final configurations encompass double rows of the CASH geometry, with inline and staggered arrangements, consecutively. The second order upwind scheme is employed for the discretization of equations and the pressure-velocity coupling is performed by using the SIMPLEC algorithm. Moreover, the k-ω shear stress transport turbulence model is applied for the flow simulation. Present results on the compound angle holes show that the span wise-averaged cooling effectiveness is higher when 6D span wise hole spacing is employed as compared with 7.8D spacing. Results have emerged that the double rows of staggered CASH geometry display higher cooling effectiveness than that of the inline arrangement. Furthermore, comparison of the present spanwise effectiveness and ratio of Stanton numbers with the available experimental data shows reasonable agreement for the first and second configurations.
APA, Harvard, Vancouver, ISO, and other styles
4

Saini, Neenu, Archana Tripathi, and Ruby Jindal. "A lattice dynamical investigation of the Raman and the infrared wave numbers of Ruddlesden-Popper compound Sr2TiO4." In ADVANCED MATERIALS AND RADIATION PHYSICS (AMRP-2020): 5th National e-Conference on Advanced Materials and Radiation Physics. AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0052397.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Angle, Brandon R., Matthew J. Rau, and Margaret L. Byron. "Effect of Mass Distribution on Falling Cylindrical Particles at Intermediate Reynolds Numbers." In ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/ajkfluids2019-5458.

Full text
Abstract:
Abstract In natural sedimentation, many particles of interest are both large and nonspherical. Some common particle types (e.g. naturally occurring aggregates) do not have a uniform mass distribution. As a result, the centers of mass and buoyancy are not co-located, leading to more complex settling dynamics. Here we investigated the orientation and terminal velocity of freely falling cylinders, in which the mass distribution was either constant (uniform-density, UD) or bipartite, undergoing a step function halfway along the length (compound-density, CD). Cylinders had relatively low aspect ratios (1 < AR < 4), and fell at intermediate Reynolds numbers (of order 100). The cylinders, initially horizontal, were released at the top of a tall hexagonal still-water tank, and imaged by a high-speed camera. Two low-speed cameras simultaneously captured 1) full cylinder trajectory and 2) landing position. We recorded the terminal velocity, fall orientation, and landing site of each cylinder. Results showed significant differences in the settling characteristics of uniform- vs. compound-density cylinders. UD cylinders of AR = 1 fell broadside initially, whereas AR = 1 CD cylinders fell vertically. However, both cases showed oscillation in cylinder orientation upon descent. UD cylinders with AR = 2 and AR = 4 consistently fell broadside, with minimal cylinder axis oscillation. CD cylinders with AR = 2 fell with two different modes. In mode 1, cylinders rotated 90° from their initial orientation before beginning to oscillate about the vertical axis. In mode 2, cylinder orientation remained constant at a slight angle from the horizontal. This mode was also observed in the CD AR = 4 cylinders, which fell at a constant (tilted) orientation angle and moved horizontally as they fell. The landing sites for all CD cylinders were biased toward the side of the target where the denser end of the cylinder was initially oriented, whereas UD cylinders landed in a uniform distribution around the tank center. In general, cylinders with the smallest vertical projected area fell with the greatest terminal velocity; however, the mechanisms controlling orientation remain unclear. Our results have important implications for predicting the settling behavior of naturally-occurring particles, and lay the groundwork for further study of particles settling in complex flows such as turbulence. Given our results in still water, the interplay between the buoyant torques created by the offset between the center of mass and center of volume are likely to strongly impact particle motion in turbulence.
APA, Harvard, Vancouver, ISO, and other styles
6

Li, Lin, Cun-liang Liu, Hai-yong Liu, Hui-ren Zhu, and Jian-xia Luo. "Investigation on Film Cooling Performance of the Compound Hole and Y-Shaped Hole Configurations With the Cross-Flow Coolant Channel." In ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/gt2018-76268.

Full text
Abstract:
Film cooling performance of the compound hole and the Y-shaped hole configurations with the cross-flow coolant channel is investigated experimentally and numerically in this paper. The Reynolds numbers of coolant flow are fixed as 50000 and 100000 respectively. The film cooling effectiveness and heat transfer coefficient were measured by the transient liquid crystal measurement technique under three blowing ratios of 0.5, 1.0 and 2.0 respectively. And flow resistance measurements were also performed to obtain the discharge coefficient of the two film hole configurations. Numerical simulations with Reynolds-averaged Navier-Stokes (RANS) method were performed to explain the experiment results. The results show that the distribution feature of film cooling effectiveness for the compound hole and Y-shaped hole configurations is different. The film cooling effectiveness of the Y-shaped hole configuration is higher than that of the compound hole, and the film spanwise coverage is larger than that of the compound hole under all cases. For two film hole configurations, the heat transfer coefficient increases with the increase of the cross-flow Reynolds number and the blowing ratio. The heat transfer coefficient of the compound hole and Y-shaped hole configurations is close to each other under small cross-flow Reynolds number. However, under large cross-flow Reynolds number, the compound hole configuration has much higher heat transfer coefficient. The discharge coefficient increases gradually with the rising blowing ratio, then tend to a fixed value. Under the condition of the small cross-flow Reynolds number, the discharge coefficient of two film hole configurations is high. The discharge coefficient of the Y-shaped hole configuration is a little higher than that of the compound hole configuration under the condition of the large blowing ratio.
APA, Harvard, Vancouver, ISO, and other styles
7

Yang, Shang-Feng, Je-Chin Han, Alexander MirzaMoghadam, and Ardeshir Riahi. "Film Cooling Effectiveness of Transonic Turbine Vane Suction Side With Compound-Angle Shaped Hole Configuration." In ASME Turbo Expo 2015: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/gt2015-42184.

Full text
Abstract:
This paper studies the effect of transonic flow velocity on local film cooling effectiveness distribution of turbine vane suction side, experimentally. A conduction-free Pressure Sensitive Paint (PSP) method is used to determine the local film cooling effectiveness. Tests were performed in a five-vane annular cascade at Texas A&M Turbomachinery laboratory blow-down flow loop facility. The exit Mach numbers are controlled to be 0.7, 0.9, and 1.1, from subsonic to transonic flow conditions. Three foreign gases N2, CO2 and Argon/SF6 mixture are selected to study the effects of three coolant-to-mainstream density ratios, 1.0, 1.5, and 2.0 on film cooling. Four averaged coolant blowing ratios in the range, 0.7, 1.0, 1.3 and 1.6 are investigated. The test vane features 3 rows of radial-angle cylindrical holes around the leading edge, and 2 rows of compound-angle shaped holes on the suction side. Results suggest that the PSP technique is capable of producing clear and detailed film cooling effectiveness contours at transonic condition. The effects of coolant to mainstream blowing ratio, density ratio, and exit Mach number on the vane suction-surface film cooling distribution are obtained, and the consequence results are presented and explained in this investigation.
APA, Harvard, Vancouver, ISO, and other styles
8

Mhetras, Shantanu, Je-Chin Han, and Ron Rudolph. "Effect of Flow Parameter Variations on Full Coverage Film-Cooling Effectiveness for a Gas Turbine Blade." In ASME Turbo Expo 2007: Power for Land, Sea, and Air. ASMEDC, 2007. http://dx.doi.org/10.1115/gt2007-27071.

Full text
Abstract:
The effect of film cooling holes placed along the span of a fully-cooled high pressure turbine blade in a stationary, linear cascade on film cooling effectiveness is studied using the Pressure Sensitive Paint (PSP) technique. Effect of showerhead injection at the leading edge and the presence of compound angled, diffusing holes on the pressure and suction side are also examined. Six rows of compound angled shaped film cooling holes are provided on the pressure side while four such rows are provided on the suction side of the blade. The holes have a laidback and fan-shaped diffusing cross-section. Another three rows of cylindrical holes are drilled at a typical angle on the leading edge to capture the effect of showerhead film coolant injection. The film cooling hole arrangement simulates a typical film cooled blade design used in stage 1 rotor blades for gas turbines used for power generation. A typical blowing ratio is defined for each film hole row and tests are performed for 100%, 150% and 200% of this typical value. Tests are performed for inlet Mach numbers of 0.36 and 0.45 with corresponding exit Mach numbers of 0.51 and 0.68 respectively. The flow remains subsonic in the throat region for both Mach numbers. The corresponding free stream Reynolds number, based on the axial chord length and the exit velocity, are 1.3 million and 1.74 million respectively. Freestream turbulence intensity level at the cascade inlet is 6%. Results show that varying blowing ratios can have a significant impact on film-cooling effectiveness distribution. Large spanwise variations in effectiveness distributions are also observed. Similar distributions were observed for both Mach numbers.
APA, Harvard, Vancouver, ISO, and other styles
9

Liu, K., D. P. Narzary, J. C. Han, A. V. Mirzamoghadam, and A. Riahi. "Influence of Shock Wave on Turbine Vane Suction Side Film Cooling With Compound-Angle Shaped Holes." In ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/gt2011-45927.

Full text
Abstract:
This paper studies the effect of shock wave on turbine vane suction side film cooling using a conduction-free Pressure Sensitive Paint (PSP) technique. Tests were performed in a five-vane annular cascade with a blow-down flow loop facility. The exit Mach numbers are controlled to be 0.7, 1.1, and 1.3, from subsonic to transonic flow conditions. Two foreign gases N2 and CO2 are selected to study the effects of two coolant-to-mainstream density ratios, 1.0 and 1.5, on film cooling. Four averaged coolant blowing ratios in the range, 0.4 to 1.6 are investigated. The test vane features 3 rows of radial-angle cylindrical holes around the leading edge, and 2 rows of compound-angle shaped holes on the suction side. Results suggest that the PSP is an accurate technique capable of producing clear and detailed film cooling effectiveness contours at transonic flow conditions. At lower blowing ratio, film cooling effectiveness decreases with increasing exit Mach number. On the other hand, an opposite trend is observed at high blowing ratio. In transonic flow, the rapid rise in pressure caused by shock benefits film-cooling by deflecting the coolant jet toward the vane surface at higher blowing ratio. Results show that denser coolant performs better, typically at higher blowing ratio in transonic flow. Results also show that the optimum momentum flux ratio decreases with density ratio at subsonic condition. In transonic flow, however, the trend is reversed and the peak effectiveness values plateau over a long range of momentum flux ratio.
APA, Harvard, Vancouver, ISO, and other styles
10

Jung, In Sung, Joon Sik Lee, and P. M. Ligrani. "Effects of Bulk Flow Pulsations on Film Cooling With Compound Angle Holes: Heat Transfer Coefficient Ratio and Heat Flux Ratio." In ASME Turbo Expo 2001: Power for Land, Sea, and Air. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/2001-gt-0129.

Full text
Abstract:
Experiments are conducted to investigate the effects of bulk flow pulsations on film cooling from compound angle holes. A row of five film cooling holes is employed with orientation angles of 0°, 30°, 60°, and 90° at a fixed inclination angle of 35°. Static pressure pulsations are generated using an array of six rotating shutter blades, which extend across the span of the exit of the wind tunnel test section. Pulsation frequencies of 0 Hz, 8 Hz, and 36 Hz, and time-averaged blowing ratios of 0.5, 1.0, and 2.0 are employed. Corresponding coolant Strouhal numbers based on these values then range from 0.20 to 3.6. Spatially-resolved surface heat transfer coefficient distributions are measured (with the film and freestream at the same temperature) using thermochromic liquid crystals. Presented are ratios of surface heat transfer coefficients with and without film cooling, as well as ratios of surface heat flux with and without film cooling. These results, for compound angle injection, indicate that the pulsations cause the film to be spread more uniformly over the test surface than when no pulsations are employed. This is because the pulsations cause the film from compound angle holes to oscillate in both the normal and spanwise directions after it leaves the holes. As a result, the pulsations produce important changes to spatially-resolved distributions of surface heat flux ratios, and surface heat transfer coefficient ratios. In spite of these alterations, only small changes to spatially-averaged heat transfer coefficient ratios are produced by the pulsations. Spatially-averaged surface heat flux ratios, on the other hand, increase considerably at coolant Strouhal numbers larger than unity, with higher rates of increase at larger orientation angles.
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Compound numbers"

1

Maidanik, G. Loss Factors of a Complex Composed of a Number of Coupled Harmonic Oscillators. Fort Belvoir, VA: Defense Technical Information Center, February 1997. http://dx.doi.org/10.21236/ada325092.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Metzger, Wyatt K. Photovoltaic Cells Employing Group II-VI Compound Semiconductor Active Layers: Cooperative Research and Development Final Report, CRADA Number CRD-09-325. Office of Scientific and Technical Information (OSTI), September 2018. http://dx.doi.org/10.2172/1475129.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Blake, D. Bibliography of Work on the Heterogeneous Photocatalytic Removal of Hazardous Compounds from Water and Air--Update Number 4 to October 2001. Office of Scientific and Technical Information (OSTI), November 2001. http://dx.doi.org/10.2172/789771.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Blake, D. M. Bibliography of work on the heterogeneous photocatalytic removal of hazardous compounds from water and air, Update Number 2 to October 1996. Office of Scientific and Technical Information (OSTI), January 1997. http://dx.doi.org/10.2172/453436.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Blake, D. M. Bibliography of work on the heterogeneous photocatalytic removal of hazardous compounds from water and air: Update Number 1 to June, 1995. Office of Scientific and Technical Information (OSTI), November 1995. http://dx.doi.org/10.2172/132672.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Hutchinson, M. L., J. E. L. Corry, and R. H. Madden. A review of the impact of food processing on antimicrobial-resistant bacteria in secondary processed meats and meat products. Food Standards Agency, October 2020. http://dx.doi.org/10.46756/sci.fsa.bxn990.

Full text
Abstract:
For meat and meat products, secondary processes are those that relate to the downstream of the primary chilling of carcasses. Secondary processes include maturation chilling, deboning, portioning, mincing and other operations such as thermal processing (cooking) that create fresh meat, meat preparations and ready-to-eat meat products. This review systematically identified and summarised information relating to antimicrobial resistance (AMR) during the manufacture of secondary processed meatand meat products (SPMMP). Systematic searching of eight literature databases was undertaken and the resultantpapers were appraised for relevance to AMR and SPMMP. Consideration was made that the appraisal scores, undertaken by different reviewers, were consistent. Appraisal reduced the 11,000 initially identified documents to 74, which indicated that literature relating to AMR and SPMMP was not plentiful. A wide range of laboratory methods and breakpoint values (i.e. the concentration of antimicrobial used to assess sensitivity, tolerance or resistance) were used for the isolation of AMR bacteria.The identified papers provided evidence that AMR bacteria could be routinely isolated from SPMMP. There was no evidence that either confirmed or refuted that genetic materials capable of increasing AMR in non-AMR bacteria were present unprotected (i.e. outside of a cell or a capsid) in SPMMP. Statistical analyses were not straightforward because different authors used different laboratory methodologies.However, analyses using antibiotic organised into broadly-related groups indicated that Enterobacteriaceaeresistant to third generation cephalosporins might be an area of upcoming concern in SPMMP. The effective treatment of patients infected with Enterobacteriaceaeresistant to cephalosporins are a known clinical issue. No AMR associations with geography were observed and most of the publications identified tended to be from Europe and the far east.AMR Listeria monocytogenes and lactic acid bacteria could be tolerant to cleaning and disinfection in secondary processing environments. The basis of the tolerance could be genetic (e.g. efflux pumps) or environmental (e.g. biofilm growth). Persistent, plant resident, AMR L. monocytogenes were shown by one study to be the source of final product contamination. 4 AMR genes can be present in bacterial cultures used for the manufacture of fermented SPMMP. Furthermore, there was broad evidence that AMR loci could be transferred during meat fermentation, with refrigeration temperatures curtailing transfer rates. Given the potential for AMR transfer, it may be prudent to advise food business operators (FBOs) to use fermentation starter cultures that are AMR-free or not contained within easily mobilisable genetic elements. Thermal processing was seen to be the only secondary processing stage that served as a critical control point for numbers of AMR bacteria. There were significant linkages between some AMR genes in Salmonella. Quaternary ammonium compound (QAC) resistance genes were associated with copper, tetracycline and sulphonamide resistance by virtue of co-location on the same plasmid. No evidence was found that either supported or refuted that there was any association between AMR genes and genes that encoded an altered stress response or enhanced the survival of AMR bacteria exposed to harmful environmental conditions.
APA, Harvard, Vancouver, ISO, and other styles
7

Duch, Michael. Performing Hanne Darboven's Opus 17a and long duration minimalist music. Norges Musikkhøgskole, August 2018. http://dx.doi.org/10.22501/nmh-ar.481276.

Full text
Abstract:
Hanne Darboven’s (1941-2009) Opus 17a is a composition for solo double bass that is rarely performed due to the physical and mental challenges involved in its performance. It is one of four opuses from the composers monumental 1008 page Wünschkonzert (1984), and was composed during her period of making “mathematical music” based on mathematical systems where numbers were assigned to certain notes and translated to musical scores. It can be described as large-scale minimalism and it is highly repetitive, but even though the same notes and intervals keep repeating, the patterns slightly change throughout the piece. This is an attempt to unfold the many challenges of both interpreting, preparing and performing this 70 minute long solo piece for double bass consisting of a continuous stream of eight notes. It is largely based on my own experiences of preparing, rehearsing and performing Opus 17a, but also on interviews I have conducted with fellow bass players Robert Black and Tom Peters, who have both made recordings of this piece as well as having performed it live. One is met with few instrumental technical challenges such as fingering, string crossing and bowing when performing Opus 17a, but because of its long duration what one normally would take for granted could possibly prove to be challenging.
APA, Harvard, Vancouver, ISO, and other styles
8

Chapman, Ray, Phu Luong, Sung-Chan Kim, and Earl Hayter. Development of three-dimensional wetting and drying algorithm for the Geophysical Scale Transport Multi-Block Hydrodynamic Sediment and Water Quality Transport Modeling System (GSMB). Engineer Research and Development Center (U.S.), July 2021. http://dx.doi.org/10.21079/11681/41085.

Full text
Abstract:
The Environmental Laboratory (EL) and the Coastal and Hydraulics Laboratory (CHL) have jointly completed a number of large-scale hydrodynamic, sediment and water quality transport studies. EL and CHL have successfully executed these studies utilizing the Geophysical Scale Transport Modeling System (GSMB). The model framework of GSMB is composed of multiple process models as shown in Figure 1. Figure 1 shows that the United States Army Corps of Engineers (USACE) accepted wave, hydrodynamic, sediment and water quality transport models are directly and indirectly linked within the GSMB framework. The components of GSMB are the two-dimensional (2D) deep-water wave action model (WAM) (Komen et al. 1994, Jensen et al. 2012), data from meteorological model (MET) (e.g., Saha et al. 2010 - http://journals.ametsoc.org/doi/pdf/10.1175/2010BAMS3001.1), shallow water wave models (STWAVE) (Smith et al. 1999), Coastal Modeling System wave (CMS-WAVE) (Lin et al. 2008), the large-scale, unstructured two-dimensional Advanced Circulation (2D ADCIRC) hydrodynamic model (http://www.adcirc.org), and the regional scale models, Curvilinear Hydrodynamics in three dimensions-Multi-Block (CH3D-MB) (Luong and Chapman 2009), which is the multi-block (MB) version of Curvilinear Hydrodynamics in three-dimensions-Waterways Experiments Station (CH3D-WES) (Chapman et al. 1996, Chapman et al. 2009), MB CH3D-SEDZLJ sediment transport model (Hayter et al. 2012), and CE-QUAL Management - ICM water quality model (Bunch et al. 2003, Cerco and Cole 1994). Task 1 of the DOER project, “Modeling Transport in Wetting/Drying and Vegetated Regions,” is to implement and test three-dimensional (3D) wetting and drying (W/D) within GSMB. This technical note describes the methods and results of Task 1. The original W/D routines were restricted to a single vertical layer or depth-averaged simulations. In order to retain the required 3D or multi-layer capability of MB-CH3D, a multi-block version with variable block layers was developed (Chapman and Luong 2009). This approach requires a combination of grid decomposition, MB, and Message Passing Interface (MPI) communication (Snir et al. 1998). The MB single layer W/D has demonstrated itself as an effective tool in hyper-tide environments, such as Cook Inlet, Alaska (Hayter et al. 2012). The code modifications, implementation, and testing of a fully 3D W/D are described in the following sections of this technical note.
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Compound numbers' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography