Relevant bibliographies by topics / Au/TS-1

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Au/TS-1'

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

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Journal articles on the topic "Au/TS-1"

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Harris, James W., Jeremy Arvay, Garrett Mitchell, W. Nicholas Delgass, and Fabio H. Ribeiro. "Propylene oxide inhibits propylene epoxidation over Au/TS-1." Journal of Catalysis 365 (September 2018): 105–14. http://dx.doi.org/10.1016/j.jcat.2018.06.015.

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Fu, Jinsong, Xiaoming Zhang, Wuyang Liang, Qian Lei, Bing Sun, Wujun He, and Guowei Deng. "Direct Gas-Phase Oxidation of Propylene to Acetone in the Presence of H2 and O2 over Au/TS-1 Catalyst." Current Organic Synthesis 17, no. 8 (October 28, 2020): 685–90. http://dx.doi.org/10.2174/1570179417666200615154837.

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A novel process for the preparation of acetone is reported by gas-phase oxidation of propylene in the presence of H2 and O2 with Au supported TS-1 catalyst (Au/TS-1). By elevating the reaction temperature to 280 oC, Au/TS-1 catalyzes 11.6% propylene generating acetone with 70.6% selectivity, and 8.2% acetone in onepass yield. Acetone is originated from propylene oxide isomerization, which is mainly attributed to the surface of the Lewis base and high reaction temperature. Furthermore, small Au nanoparticle size promotes the reaction.
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Joshi, Ajay M., W. Nicholas Delgass, and Kendall T. Thomson. "H2 adsorption and H/D exchange on Au/TS-1 and Au/S-1 catalysts." Topics in Catalysis 44, no. 1-2 (June 2007): 27–39. http://dx.doi.org/10.1007/s11244-007-0275-y.

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Bukowski, Brandon C., W. Nicholas Delgass, and Jeffrey Greeley. "Gold Stability and Diffusion in the Au/TS-1 Catalyst." Journal of Physical Chemistry C 125, no. 8 (February 17, 2021): 4519–31. http://dx.doi.org/10.1021/acs.jpcc.0c10193.

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CUMARANATUNGE, L., and W. DELGASS. "Enhancement of Au capture efficiency and activity of Au/TS-1 catalysts for propylene epoxidation." Journal of Catalysis 232, no. 1 (May 15, 2005): 38–42. http://dx.doi.org/10.1016/j.jcat.2005.02.006.

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Jiang, Jian, Harold H. Kung, Mayfair C. Kung, and Jiantai Ma. "Aqueous phase epoxidation of 1-butene catalyzed by suspension of Au/TiO2 +TS-1." Gold Bulletin 42, no. 4 (December 2009): 280–87. http://dx.doi.org/10.1007/bf03214950.

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Wang, Lu, Jiajun Dai, Yan Xu, Yingling Hong, Jiale Huang, Daohua Sun, and Qingbiao Li. "Titanium silicalite-1 zeolite encapsulating Au particles as a catalyst for vapor phase propylene epoxidation with H2/O2: a matter of Au–Ti synergic interaction." Journal of Materials Chemistry A 8, no. 8 (2020): 4428–36. http://dx.doi.org/10.1039/c9ta12470e.

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Seed-directed solvent-free crystallization combined with bio-extract integration is used to encapsulate Au into TS-1, enhancing Au–Ti synergic interaction. The resulted Au–Ti@MFI exhibits excellent performances for vapor phase propylene epoxidation.
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YANG, Peng-fei, Ji-cheng ZHOU, De-hua LI, and Wen-ming REN. "Catalytic performance of Au/TS-1 in selective oxidation of nitrogen monoxide." Journal of Fuel Chemistry and Technology 38, no. 1 (February 2010): 80–85. http://dx.doi.org/10.1016/s1872-5813(10)60022-9.

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Wang, Lina, Pinran Lin, and Shaofeng Liu. "Research on Direct Epoxidation of Propylene on Modified Au / TS-1 Catalysts." IOP Conference Series: Earth and Environmental Science 218 (February 24, 2019): 012155. http://dx.doi.org/10.1088/1755-1315/218/1/012155.

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Sasidharan, Manickam, Astam K. Patra, Yoshimichi Kiyozumi, and Asim Bhaumik. "Fabrication, characterization and catalytic oxidation of propylene over TS-1/Au membranes." Chemical Engineering Science 75 (June 2012): 250–55. http://dx.doi.org/10.1016/j.ces.2012.03.031.

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Dissertations / Theses on the topic "Au/TS-1"

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Gaudet, Jason. "Gas-Phase Epoxidation of Ethylene and Propylene." Diss., Virginia Tech, 2010. http://hdl.handle.net/10919/29341.

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Catalysts consisting of silver on α-Al2O3, α-SiC, and β-SiC supports were synthesized and tested for catalytic performance in the gas-phase direct oxidation of ethylene to ethylene oxide. For this study, which used no promoters, ethylene oxidation selectivity of SiC-supported catalysts ranged from 10 to 60% and conversion from 0-4.5%. Silicon carbide supported catalysts exhibited poor performance except for a surface-modified β-SiC-supported catalyst, which demonstrated conversion and selectivity similar to that of an α-Al2O3-supported catalyst. This Ag/β-SiC catalyst was further investigated with a kinetic study, and the reaction orders were found to be 0.18 with respect to ethylene and 0.34 with respect to oxygen. The kinetic results were consistent with Langmuir-Hinshelwood rate expressions developed from single-site and dual-site reaction mechanisms. Gold nanoparticles on titanium oxide and titania-silica supports are active for the formation of propylene oxide by the oxidation of propylene with hydrogen and oxygen mixtures. This study investigates the effect of cyanide treatment on gold supported on titanosilicate zeolite supports (Au/TS-1). Catalysts treated with weak solutions of sodium cyanide resulted in preferential removal of small gold particles, while catalysts treated with strong solutions resulted in dissolution of the gold and re-precipitation as gold (+1) cyanide. X-ray absorption spectroscopy demonstrated that catalysts which produce propylene oxide in the presence of hydrogen and oxygen mixtures had supported gold (+3) oxide nanoparticles of 3 nm size after synthesis, which were reduced to gold metal at reaction conditions. Samples treated with strong solutions of sodium cyanide resulted in supported gold (+1) cyanide particles of large size, 9-11 nm. These particles did not produce propylene oxide but, surprisingly, showed high selectivity toward propylene hydrogenation. Increasing gold (+1) cyanide particle size resulted in a decrease in hydrogenation activity. TS-1 and Au/TS-1 surfaces were studied with laser Raman spectroscopy. Surface fluorescence was substantially reduced with a low-temperature ozone treatment, allowing observation of titanosilicate framework bands. Hydrocarbon vibrations are observed for TS-1 and Au/TS-1 under propylene. Density functional theory models indicated that propylene adsorbed to a metal site along the Ï bond would show a Raman spectrum very similar to gas-phase propylene except for out-of-plane C-H vibrations, which would be moved to higher energy. This adsorption spectrum, with out-of-plane vibrations shifted to higher energy, was observed for both TS-1 and Au/TS-1. Langmuir adsorption isotherms were generated for both TS-1 and Au/TS-1, and a scaling factor derived from propylene uptake experiments allowed these isotherms to be scaled to propylene coverage of titanium.
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Lewis, Richard J. "The application of Cs-exchanged tungstophosphoric acid as an additive in the direct synthesis of hydrogen peroxide and the use of Au-Pd/TS-1 in a one-pot approach to cyclohexanone oxime production." Thesis, Cardiff University, 2016. http://orca.cf.ac.uk/95334/.

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The work presented within this thesis can be separated into two distinct parts. The first investigates the direct synthesis of hydrogen peroxide from molecular hydrogen and oxygen using gold-palladium supported catalysts and caesium exchanged tungstophosphoric acid as an acidic additive. The direct synthesis of H2O2 presents an environmentally friendly alternative to the current industrial, anthraquinone process. However for the direct route to be viable a variety of issues must be addressed. Primarily catalytic selectivity towards H2O2 is a major concern for the majority of catalysts active for H2O2 synthesis, with the degradation of H2O2 through hydrogenation or decomposition reported for a number of catalysts within the literature. The use of acid either during catalyst preparation or as part of the reaction solution has previously been shown to improve selectivity towards H2O2. Furthermore acidic supports, including heteropolyacid, have been observed to produce catalysts with greater selectivity than those with a higher isoelectric point and in turn provide higher yields of H2O2. This work investigates the ability of caesium exchanged heteropolyacids to improve catalytic activity towards H2O2 when used in addition to Au-Pd supported catalysts, in particular 2.5 wt. % Au - 2.5 wt. Pd/TiO2. The second part of this work is concerned with the ammoximation of cyclohexanone to cyclohexanone oxime via the in-situ formation of H2O2, in a one-pot style process. The conditions associated with ammoximation of cyclohexanone that is the presence of elevated temperatures and basic conditions, are considered extremely harsh for H2O2 stability. The in-situ generation of H2O2 during the ammoximation of cyclohexanone to cyclohexanone oxime would yield significant reductions in overall costs of the ammoximation reaction. Primarily these costs are associated with the purchasing, transport, storage and dilution of H2O2. This work determines the feasibility of a one-pot ammoximation process via in-situ H2O2 formation. Firstly, reaction conditions are established for this process and following this the role of catalyst design in improving selectivity towards cyclohexanone oxime as well as cyclohexanone conversion for this reaction is studied.
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Boukachaba, Niama. "Apport des observations satellitaires hyperspectrales infrarouges IASI au-dessus des continents dans le modèle météorologique à échelle convective AROME." Phd thesis, Toulouse, INPT, 2017. http://oatao.univ-toulouse.fr/19257/1/BOUKACHABA_Niama.pdf.

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Le sondeur infrarouge hyperspectral IASI (Interféromètre Atmosphérique de Sondage Infrarouge, développé conjointement par le CNES et EUMETSAT et embarqué à bord des satellites défilants Metop A, Metop B et très prochainement Metop C (2006, 2012 et 2018, respectivement)) apporte une très grande quantité d’informations permettant, entre autres, de décrire finement les paramètres de surface (température et émissivité sur une large gamme de longueurs d’onde). Néanmoins, les prévisions de température des surfaces continentales ne sont pas encore suffisamment réalistes pour utiliser l’information infrarouge en basse troposphère et proche de la surface au-dessus des continents car les radiances sensibles à ces régions sont fortement affectées par la variation des paramètres de surface (tels que la température, l’émissivité et l’humidité) et par la présence des nuages. Ceci peut conduire à un écart parfois important entre les observations et les simulations, conduisant à un rejet important des observations et à une mauvaise détection nuageuse. De ce fait, l’objectif principal de la thèse est l’amélioration des analyses et des prévisions par l’augmentation des observations IASI assimilées sur les continents dans le modèle à aire limitée AROME. La première partie du travail s’est focalisée sur l’identification du canal IASI le plus approprié à la restitution de la tempèrature de surface (Ts). En poursuivant les travaux de thèse de [Vincensini, 2013], cinq canaux IASI localisés entre 901.50 cm−1 et 1115.75 cm−1 ont été sélectionnés pour une meilleure prise en compte des basses couches de l’atmosphère plus particulièrement en termes de température et d’humidité. La restitution de la Ts s’est faite par inversion de l’équation du transfert radiatif [Karbou et al., 2006] en utilisant le modèle de transfert radiatif RTTOV et l’atlas d’émissivité développé par l’université de Wisconsin. Le canal IASI 1194 (943.25 cm−1) a été retenu pour la restitution des Ts suite à une série de comparaisons effectuées entre la Ts restituée à partir des différents canaux IASI sélectionnés et celle de l’ébauche. Aussi, des comparaisons ont été réalisées entre les Ts restituées à partir de IASI et celles restituées à partir de SEVIRI et de AVHRR. La seconde partie du travail a reposé sur l’étude de l’impact de l’utilisation de la Ts restituée à partir du canal IASI 1194 dans les processus de simulation et d’assimilation des canaux IASI utilisés dans les modèles de prévision numérique du temps de Météo-France (AROME et ARPEGE). La Ts restituée à partir du canal IASI 1194 a été intégrée dans le modèle RTTOV pour améliorer les simulations des autres observations IASI sensibles à la surface. L’impact sur la détection nuageuse issue de l’algorithme de [McNally and Watts, 2003] a également été évalué. Par la suite, d’autres expériences ont été menés pour étudier l’impact de l’utilisation des Ts restituées sur l’assimilation de données et sur l’amélioration de la sélection des canaux IASI sur terre dans le modèle AROME. L’impact sur les analyses et les prévisions ont été également décrits.
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Lacasse, Shirley. "Le travail des danseuses nues au-delà du stigmate, une relation de service marchand /." Acc%60es réservé UdeM, 2003. http://proquest.umi.com/pqdweb?index=0&did=845716731&SrchMode=1&sid=1&Fmt=6&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1191587205&clientId=48948.

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Thèse (Ph. D.)--Université de Montréal, 2004.
Titre de l'écran-titre (visionné le 5 oct. 2007). "Thèse présentée à la Faculté des études supérieures en vue de l'obtention du grade de Philosophiae Doctor (Ph.D.) en sociologie" Paraît aussi en version papier et en version microforme.
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Sercia, Pierre. "Les modèles d'intégration sociale d'élèves fréquentant les écoles ethnoreligieuses au Québec." [Montréal] : Université de Montréal, 2004. http://proquest.umi.com/pqdweb?index=0&did=913517561&SrchMode=1&sid=5&Fmt=6&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1199735248&clientId=48948.

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Thèse (Ph. D.)--Université de Montréal, 2005.
Titre de l'écran-titre (visionné le 7 janv. 2008). "Thèse présentée à la Faculté des études supérieures en vue de l'obtention du grade de Philosophiae Doctor (Ph.D) en éducation option administration et fondements de l'éducation" Paraît aussi en version papier et en version microforme.
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Ekimova-Boublil, Elena. "Une approche de formation didactique à l'enseignement de la géométrie au primaire." Acc%60es réservé UdeM, 2005. http://proquest.umi.com/pqdweb?index=0&did=1306827921&SrchMode=1&sid=2&Fmt=6&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1191504134&clientId=48948.

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Thèse (Ph. D.)--Université de Montréal, 2006.
Titre de l'écran-titre (visionné le 4 oct. 2007). "Thèse présentée à la Faculté des études supérieures En vue de l'obtention du grade de Philosophiae Doctor (Ph. D.) en sciences de l'éducation, option didactique" Paraît aussi en version papier et en version microforme.
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Beauregard, France. "Représentations sociales des parents et des enseignants de leurs rôles dans l'intégration scolaire d'un élève dysphasique en classe ordinaire au primaire." Acc%60es réservé UdeM, 2006. http://proquest.umi.com/pqdweb?index=0&did=1328075431&SrchMode=1&sid=1&Fmt=6&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1191507255&clientId=48948.

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Thèse (Ph. D.)--Université de Montréal, 2006.
Titre de l'écran-titre (visionné le 4 oct. 2007). "Thèse présentée à la Faculté des études supérieures en vue de l'obtention du grade de Philosophia doctor Sciences de l'éducation, option Andragogie" Paraît aussi en version papier.
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Charland, Gilbert. "Analyse comparée de l'impact des choix budgétaires des gouvernements au Québec et au Canada sur le rôle et les missions de l'état (1992-2002) /." 2005. http://proquest.umi.com/pqdweb?index=15&did=1075703711&SrchMode=1&sid=1&Fmt=2&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1177438527&clientId=9268.

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Vachon, Isabelle. "Représentations sociales d'Internet chez des enseignants de lycées publics au Gabon /." 2003. http://proquest.umi.com/pqdweb?index=0&did=766663111&SrchMode=1&sid=1&Fmt=2&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1152299976&clientId=9268.

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Beaubien, Mélanie. "Anxiété et adaptation au premier trimestre d'études collégiales /." 2003. http://proquest.umi.com/pqdweb?index=0&did=766706711&SrchMode=1&sid=4&Fmt=2&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1151517486&clientId=9268.

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Book chapters on the topic "Au/TS-1"

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"scto th ara ti rsetc ic te s d ( M mo OdSe ) l . f S or m ec it ahstadnad ta are called model output 1994). The state of ENSO is only one of many factors obs terevveedn SS gi T v en a perfect SRSoTp el feow re sckais ( t 1 -9 9i7 .e ) ., shtohweu (K se r d is hn to aKfuom re acrae st t al t . h1e99I5n ) d . ian summer monsoon m to oid ts elEuNsS ed O -a r t -N t C he E P cu rrent operational atmospheric Ward et al. (1993) discuss the useful level of skill In their study e , la ftoerd ty r -a fi i need vne fa lylspastu te brsn ta snfto ia rlpa ra d c ju ti sctamleun se ts . m of a d tr eop in ic a re l al n o ti r m th e A by f ri tchaenU fo KreM ca e st tse or th ol aotgihcaavleOb ff eiecnee (h xianm dc in aesd ts ) fo bra se th d e on specif e ie a d rs ( oofbsseeravseodn ) alSS fo Trew ca esrtess re in la ctei on 1s9h8i6p . swTih th esgeloabrael ly ladrigsetlry ib ubtaesdedSSoTn , SS st Tatiin st itchaelm ea o ch d el sism imulation wapserrieopde at 1e9d50 th -i 9r4 te . enEa ti cmh es s , e w as hoenraelpSoonue th n t. A O tla vnetrict , hean la dstade re claad ti e v , eltyhesm re aalll -ti EmNeSfOo re ccoam sts ­ u initial co unldaitt io io nnswatso st easrttiemdatwe ith th e s lig mha tl gynid tu if dfee ren otfvhaalviedah te addahisnkdic ll asstismim lar adteotwhiatthotbhtea in seadme fr osm ta t c is rto ic sasl -v av anrp ia re ti doincs ta ble and therefore random atmospheric methods. The chief limitation to further progress is a rai enrfaag ll edf or tion th ca elcm ul oad te e l. thTehebtehsitr te meondseilmeus la ti t m io antseao re flsaecaksoonf ( gJluonbeal th tr roopu ic gahlSSeSpTtefm or beecra ) s . tsAvcaclu id ra f te orfo th re ecawse ts ttgylpoibcaall ly v , a a ri l th ea ocuhghgitvheen seasonal SST pattern. Quite of ENSO would help, but would in most years be well, it sho at w io ends in sem as oodneall re ra piln ic fa altledpa th tt eeronbs se qruvietdeifn al sluffo fi rceiceanst. tsAatrmeoaslp so heu ri scedd , ynbaumtitchaely -m oondleyl -h baavseedusreaf in ul ­ T re hgu io s ns fo rofptrheec ip w it s a ystematic or tlido , n -t rhee la tmesdpaa ti pap ll l y ic var odel pre a d ti i o ct nys in g in biases. skill with lead times of a month or less before the require some kind ions wmoaun ld y r th ai antf al hlusm ea asnoin ty ( Fhoa ll sanidncerteaals . ed1 99 th 1 e ). Istuisscaelpsto ib p il o it s y si b o le f g ki ennderoaf te bdi as byadajuM stm OS ofteacdhjnuisqtumee . n T ts h , e perhaps those tropical west Africa to drought through the pro­ production of operat einot places a huge bnue rd ed en foorntthhiesg co re vsesrivoevreerdu re c c ti eonntd in ecnaedaers -. coTahsitsalcw ha e n st geAfirn ic a th nefolraensdtM because each time the m na oldd el y n is a m ch ic aanlge fo d r , eacansetwmsoedteo ls f s (e u . r g fa ., ceElb ta ohuinrdaan ry dhGaosnbgee1n99s6 ho ) w to nhbayve se v th e e ra lpo au te tnhtoirasla ne O ed S e statistics must be calculated to provide the to weaken the north African monsoon. More studies nneacleys si d sa s ad ojfu ry Msm tm u e lt n id ts e . c T ad h a is l re en qu se ir m es bltehsetgoe ne orbatta io in natnhdetorfopp ic oasls ib nloer th re g A io fr n ic aalnarnatihnrfo al p l, ogaesniwce ll inafs lu efnocr es on fundamental OiSmp st rao ti vse ti m cs enatnsdtuond th eerssecom re osdtehles , nseuecdh fo as r reg W ion ar sdwe it thaml. a ( r 1 gi 9n9a3l ) seaalssoonadlisrcau in sfsaltlh , e a re sk n il eleo de odt . her tahboosvee . related to the flux adjustments, discussed m tim ad eefboy re c th a e st sff real­ UK orM th et eeon ro olro th g e ic aasltOBfrfaizcielsw in ectes1e9 as 8o7n . dro Kungohwt le p d re gdeico ti fonEsNS in O m is a n in ysup ff airctisenotffotrher eg w io o n rl adlT se hviesreisa relatively dry area, subject to intermittent lbeescsaium se p o in rt a th n ese regions its influence is either small or Hastenr dartohuagnhdt. c T ol hleasbeorfao to re rs c a ( set . s g , ., asHw as etlelnarsatthho1s9e95b ) y , p ea ro st foBurnad zil an t than other factors. For instance, north­ are mainly statistical, although real-time dynamical patterns ( lFyo ll iandf lu west A nd eentcael. d frican w 19 b9y1 , H tro ept ic saela so Ant la ra nitn ic fa ll astenrath 1995, WSaSrTeM for eetceaosrtosl og hiacvae ard based on tropi lcbaOlAfefe ic n e . mTahdee st saitn is ctei cal 19f9o4 re ca bsy ts tahreeS1S9T 97 ) i . n In th aeddtirtoipoinc , aplaIrn ts d i of the Sahel are affected by on ENSO SSTs. On tl aanv ti ecraSgSeT , t a ro npoim ca allyAp tl aatn te ti rcnsSaSnTdsF Si o m ll i a la nrd ly , eltocaall . SS 19 T9p1a , tt Bar anns to Onceaannd (P Sam lm ith er11999866 ). , h re agvieonaboofuSt ou tw th ic Aem th e e ri cian , fl aule th nocue gh ofexEtN re SmOeE fo NrStOhs is , A no urstth ra w li eas , tnooftA ab ulsyt ra ilniatih er e ns influence precipitation in such as that in 1982-3, can dominate the circulation Drosdowsky 1993, F n re d th IendA ia uns tr O al c ia enanw north and and precipitation patterns over tropical South ericksen and i B nt aelrgo ( v e. ign . d , A sis m te e n ri t c ly a . h T ig hhe le r v ea el l -t o im f e sk iflol, resc im as itlsarhtaovethhaatdobatac in oend ­." In Droughts, 63. Routledge, 2016. http://dx.doi.org/10.4324/9781315830896-43.

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"a in ff teec ra tcm tio o n re srbey al ist dictions into glob ian ic se m l at r m ti ondg elling of ocean-atmosphere model to a new equilibrium (e.g., Figure 2.5). This give a direct forecast of o th seph th e e ri sce ci S rc ST anom precipitat u io la n ti o (e n . gma ., o ly Jdpiee ls re­ new t a to l. lciibrrciuul oc m ati eoannsm ta o te deilnu tu n r ti nldirtivreesacahg es lo b a al atmospheric 1994). output . toWd in ri dvesttrhee ss ofc ie ela ds are taken fro m (n e th airs ) meoqdueil ­ imp A ro lt vheom ug ehn ts t h in estehedsekv il elloofppmreendtisc ti hnagvEeNrSeO su -l rteelda te idnw et h al. 1994). This is a n fo m rm o del again and so on (Ji SSTs, their greatest contribution has been in diag­ sep earrea te t he c om at pmoonsepnhtes re ofantdheoocfeacnouaprleedhamnodd le e d ll in agsn ev oesri , ngsotm he ecroeu se p a le rc d ocean-climate h has in a d tm ic o at sepdhetrhee sy psotteemn . t ia Hlofw or ­ a cl timmoastpehm er o ic demltohdaetlhacsan th ebeadavasnttaatgee -o of-f th sey -s a te rmt . g lo TbhaelaCpapnle ic aatn io dnsZeobf ia kENESNOSOSSSTSTprperdeidcitc io ti nosns -h aev .g e ., b e th en e p el reem di ecn ti tns. g Al w te o rn rl a d ti w ve id ly e , it prm ec aiyp it j at au us itonbeatnodm atically u a stati o st tihcearlt in seZdi as the b hat f m ur btahbewre asis f si g ( nCia fi noerse ta tta is l t . ic cant prog 1a9l9f4o ) r . ecH ast ress requi orwseovfemr, a ize yield model (e.g., Barnett et al. 1993). of es the in it clsueseim on s thre Feorufsu ef r u th lerrev in ie f w or smoaf ti o se n a , stohneal re fo ad re ecras is t in d g ir : ecPtaeldmteoro oc f th etahnee mea ic an annunalac nnual d at y m cl oesp ( c i. yec ., lecionuptlhiengmboe dels. In heric fields inst tewaedenotchleusf io ul nla (1 n9d98A ) n . derson (1994), Davey (1996), and Carson sainnof their the cmeatlh ie e s ) oc heaas ni tcu rn aendd out be exceedingly difficult." In Droughts, 60–62. Routledge, 2016. http://dx.doi.org/10.4324/9781315830896-42.

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Conference papers on the topic "Au/TS-1"

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Wang, Lina. "Research on Direct Epoxidation of Propylene over Modified Au/Ts-1 Catalysts." In 2016 2nd International Conference on Materials Engineering and Information Technology Applications (MEITA 2016). Paris, France: Atlantis Press, 2017. http://dx.doi.org/10.2991/meita-16.2017.102.

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Avile´s, F., L. Llanes, A. I. Oliva, J. E. Corona, M. Aguilar-Vega, and M. I. Lori´a-Bastarrachea. "Elasto-Plastic Properties of Thin Gold Films Over Polymeric Substrates." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-66319.

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Abstract:
Metallic thin films have been extensively used as coatings, interconnections, sensors and as part of micro and nano-electromechanical devices (MEMS and NEMS). The conventional substrates utilized to deposit those films are normally rigid, such as silicon. However, for applications where the substrate is subjected to significant mechanical strain (e.g. automotive coatings, electronic textiles, bioengineering, etc.) the film-substrate system needs to be flexible and conformable. Compliant polymeric substrates are ideal candidates for such a task. Some interesting mechanical properties not achieved with conventional rigid substrates can be transmitted to the film by the use of polymeric substrates. In this work, mechanical properties of 50 to 300 nm gold films deposited by thermal deposition over two thermoplastic substrates are investigated. A commercial thermoplastic, Polysulfone (“PSF”), and a home-synthesized isophthalic polyester based on the reaction of 4, 4′-(1-hydroxyphenylidene) phenol and isophthaloyl dichloride (“BAP”) [1] were used as raw materials for substrate production. Substrates were selected based on their good mechanical properties and flexibility. The use of two different substrates allows us to investigate the influence of the substrate mechanical properties in the bimaterial response. Substrates of 80 μm thickness were prepared by solution casting and cut to rectangular shapes of nominal dimensions of 30 mm × 5 mm. High purity (99.999%) commercial gold splatters were used for film deposition. Gold films with thickness of 50, 100, 200, and 300 nm were deposited onto PSF substrates by thermal evaporation inside a vacuum chamber at 3×10−5 Torr. Au films with 100 nm thickness were also deposited over BAP substrates. Four replicates of each type were deposited (at the same time) and used for tensile testing. Tensile testing of Au/PSF (film thickness 50–300 nm) and Au/BAP (film thickness 100 nm) specimens was conducted. Tests of the neat PSF and BAP substrates (6 replicates) were also conducted as a baseline. Tensile testing was conducted in a small universal testing machine with a load cell of 200 N and a cross head speed of 0.05 mm/min. The film mechanical properties were extracted from the tensile response of the film/substrate system, considered as a bimaterial. Based on sum of forces and strain compatibility, the film modulus (Ef) and stress (σf) can be extracted from characteristics of the bimaterial (EBim, σBim) and substrate (Es, σs), to generate a stress-strain curve for the film, see e.g. [2], Ef=1Af[ABimEBim−AsEs]=1+tstfEBim−tstfEs(1a)σf=1Af[P−Ps]=1+tstfσBim−tstfσs(1b) where P is the applied load, A = wt is the cross sectional area and sub-index “Bim” corresponds to the film-substrate bimaterial (ABim = w(ts+tf)). Figure 1 shows film stress (σ)-strain (ε) representative curves for Au films with different thicknesses extracted from the Au/PSF bimaterials. The film behavior presents only a small region of plasticity close to the ultimate strain. Thus, the numerical value of the maximum stress (strength) is close to its yield strength. The large plasticity of the substrate may hinder the plasticity of gold when acting as a bimaterial. As observed from this figure, the film modulus, strength and ultimate strain increase as the film thickness decreases, evidencing a “thickness-effect” not observed in bulk materials. Slightly different properties were obtained for the Au films deposited over the BAP substrate, which evidences some substrate-dependency of the film properties.
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