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1

Long, Nicholas James. "Urban, social and personal transformations in Tanjung Pinang, Kepulauan Riau, Indonesia." Thesis, University of Cambridge, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.611193.

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2

Tjoa-Bonatz, Mai Lin. "Vom Hofhaus zum Reihenhaus : das Shophouse im kolonialzeitlichen Penang, Malaysia /." Stuttgart : Fraunhofer IRB, 2003. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=012960562&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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3

Jenkins, Gwynn. "Contested space : cultural heritage and identity reconstructions : conservation strategies within a developing Asian city /." Wien ; Zürich ; Berlin ; Münster : Lit, 2008. http://opac.nebis.ch/cgi-bin/showAbstract.pl?u20=9783825813666.

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4

Tam, Yee-mei Agnes, and 譚懿媚. "Preservation of home of Malaysian Chinese." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hdl.handle.net/10722/193563.

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The study of diaspora dictates a yearning to return home which finds its Chinese equivalent in the notion of louye-guigen ( 落葉歸根) - returning to the roots. However, reality is that diaspora comes to an end after settlement for two to three generations. We do see the prevailing trend of luodi-shenggen (落地生根) – the planting of permanent roots in the soils of different countries of Chinese overseas. In some Chinese communities, luodi-shenggen turns out to be a total assimilation while others developed a uniquely Chinese identity. This dissertation seeks to examine how the Sinophone as ennuciative tactic to afford a sense of homeliness to the Malaysian Chinese – Mahua (馬華) who maintain a practice of Sinitic languages in their daily life for generations while they unmistakably identify themselves as Malaysian. Such identification situates them in an inbetweenness where they engage in constant dialog to engender new speech act. Through the study of Chinese street names in George Town, Penang and the Sinophone cultural troupe Dongdiyin (動地吟), I argue that Sinitic languages afford the Malaysian Chinese a sense of home and that Sinitic languages are employed as a tactic in face of the grand narratives of their mother Chinese culture and the Malaysian national discourse, and to displace them.<br>published_or_final_version<br>Literary and Cultural Studies<br>Master<br>Master of Arts
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5

Malacarne, Pierre. "Les réactions thermiques du cis pinane et du β pinène vers 300°C". Vandoeuvre-les-Nancy, INPL, 1989. http://www.theses.fr/1989NAN10473.

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Ce travail est une contribution à l'étude de l'isomérisation thermique de deux terpènes : le cis pinane et le β pinène. La détermination des paramètres cinétiques peut permettre une optimisation du procédé industriel en assurant un meilleur rendement et une meilleure sélectivité des procédés bien que ces deux paramètres soient souvent difficilement compatibles. Les réactions sont effectuées vers 300°C dans un réacteur en verre pyrex en limitant les avancements à des valeurs inferieures à 30% de manière à identifier les produits primaires de la réaction. L’influence des parois sur les vitesses d'isomérisation ainsi que l'influence d'ajouts de molécules étrangères (benzène, éthylène, hydracides, oxygène) sont étudiées. Ces essais sont effectués dans le but de contribuer à l'identification du type de mécanisme susceptible de représenter ces réactions ; une discussion entre une réaction par intermédiaire radicalaires et une réaction concertée de type Woodward-Hoffmann est présentée. Parallèlement à l'étude expérimentale, une estimation des paramètres cinétiques par la méthode de la cinétique thermochimique est entreprise. L’influence de la double liaison dans ce type de molécule est décrite en comparant les résultats de l'isomérisation du cis pinane et du β pinène
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6

JucÃ, Davi Matthews. "Propriedades farmacolÃgicas dos monoterpenos α- e β-pineno no mÃsculo liso gastrintestinal de ratos: efeito miorrelaxante e prÃ-cinÃtico." Universidade Federal do CearÃ, 2007. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=1114.

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Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico<br>The monoterpenes &#945;- and &#946;-pinene are constituents commonly found in several essential oils obtained from plants in Brazilian northeast such as âmalva-santaâ and âeucaliptoâ, which are used in folk medicine to treat respiratory and gastrointestinal dysfunctions. Myorelaxant actions are due to the presence of these constituents in their essential oils. The present work aimed to further study the pharmacological effects of these compounds on smooth muscle gastrointestinal contractility as well as on liquid gastric emptying in rats. Wistar rats (200-250 g) were used, sacrificed by cervical dislocation. Strips were carefully obtained from gastric fundus, duodenum and ileum, and were maintained in Tyrodeâs solution. Isometric contractions were recorded through force transducers coupled to a computerized data acquisition system. Solutions containing &#945;- or &#946;-pinene were prepared with Tween 80 (final concentration &#8804; 0,2% v/v). Solely used, &#945;- or &#946;-pinene decreased duodenal basal tonus with IC50 value corresponding to 655.1 ÂM and 810.2 ÂM, respectively. Submaximal contractions induced by K+ (60 mM, K60) or acetylcholine (ACh, 3 ÂM) were inhibited, in a concentration-dependent manner (p < 0.001, ANOVA), with IC50 values of 790.0 [580.2-1007.4] e 760.0 [650.6-870.8] ÂM, respectively to &#945;-pinene and 770.1 [500.3-1180.5] e 620.7 [520.9-750.2] ÂM, respectively to &#946;-pinene. In tissues pre-treated with &#945;- (1 mM) or &#946;-pinene (1 mM) in medium without Ca2+ with EGTA (0.2 mM), ACh (3 ÂM)-induced phasic contractions were inhibited from 18.4  3.3% to 7.7  1.5% and 5.0  1.2% of K60, respectively. In tissues maintained under Ca2+-free conditions (in medium containing EGTA 0.2 mM) and in presence of K+ (60 mM) or ACh (3 ÂM), tonic contractions induced by Ca2+ addition were reduced from 50.2  3.3% and 53.9  5.2%, respectively to values corresponding to 10.6  2.6 % and 24.4  4.1 % to experiments with &#945;-pinene and 6.6  1.1 % and 10.9  3.5 % to experiments with &#946;-pinene, respectively. In tissues pre-treated with &#945;- (1 mM) or &#946;-pinene (1 mM), ACh (60 ÂM)-induced tonic contractions, in verapamil (3 ÂM)-containing medium, were inhibited from 29.0  4.1 % to 10.6  2.7 % and 12.5  2.2 % of the K60, respectively. The caffeine (20 mM)-induced contractile response in normal Tyrodeâs solution was potentiated from 47.8  3.2 % to 72.1  9.0 and 88.8  10.6 % of the control response in virtue of &#945;- (1 mM) or &#946;-pinene (1 mM) presence, respectively. In EGTA-containing Ca2+-free medium, the contractile response to caffeine was reduced to 9.5  3.5%. Under these conditions, and in presence of &#945;- (1 mM) or &#946;-pinene (1 mM), this response was not significantly altered, with values corresponding to 7.2  2.2 e 4.7  1.3 %, respectively. In verapamil- and EGTA-containing Ca2+-free medium, after depletion of the intracellular Ca2+ stores by CCh (100 ÂM), the contractions induced by Ca2+ addition were potentiated by the presence of &#945;- (1 mM) or &#946;-pinene (1 mM) from 30.7  2.1 % to 80.6  4.7 and 51.3  7.6 %, respectively (p < 0.05, Bonferroniâs test). In gastrointestinal dye fractional retention studies, &#945;- or &#946;-pinene increased the rat liquid gastric emptying. On the other hand, they did not alter the ACh-induced contractions on gastric fundus strips. Our study firstly shows that, both &#945;- and &#946;-pinene have prokinetic properties in rats. In isolated tissues, they did not affect cholinergic contractions on gastric fundus strips, but are myorelaxant compounds on rat duodenal preparations, probably by an interference with cellular mechanisms mediated by IP3 release. Moreover, &#945;- and &#946;-pinene activate capacitative Ca2+ entry to intracellular milieu after Ca2+ stores depletion<br>&#945;- e &#946;-pineno sÃo monoterpenos constituintes do Ãleo essencial de plantas encontradas no Nordeste do Brasil como a malva-santa e o eucalipto que, na medicina popular, sÃo usadas no tratamento de distÃrbios intestinais e respiratÃrios. As aÃÃes miorrelaxantes desses Ãleos essenciais sÃo atribuÃdas à presenÃa de &#945;- e de &#946;-pineno. Nosso objetivo foi estudar mais detalhadamente os efeitos desses constituintes sobre a contratilidade do mÃsculo liso gastrintestinal e sobre o esvaziamento gÃstrico de lÃquido em ratos. No presente estudo, foram usados ratos Wistar machos (200-250g) sacrificados por deslocamento cervical. Tiras de duodeno, Ãleo e fundo de estÃmago foram cortados e mantidos em Tyrode. As contraÃÃes isomÃtricas foram registradas atravÃs de transdutores de forÃa conectados a sistema computadorizado. SoluÃÃes contendo &#945;- ou &#946;-pineno foram preparadas em Tween 80 (concentraÃÃo final &#8804; 0,2% v/v). Usados isoladamente, &#945;- e &#946;-pineno diminuÃram o tÃnus basal em duodeno com CI50 de 655,1 e 810,2 ÂM, respectivamente. ContraÃÃes submaximais induzidas por K+ (60 mM, K60) ou acetilcolina (ACh, 3 ÂM) foram inibidas, de maneira concentraÃÃo-dependente (p < 0,001, ANOVA), com valores de CI50 correspondentes a 790,0 [580,2-1007,4] e 760,0 [650,6-870,8] ÂM, respectivamente, para o &#945;-pineno e 770,1 [500,3-1180,5] e 620,7 [520,9-750,2] ÂM para o &#946;-pineno, respectivamente. Em preparaÃÃes prÃ-tratadas com 1 mM de &#945;- ou &#946;-pineno, a contraÃÃo fÃsica induzida por ACh (3 ÂM) em meio sem Ca2+ contendo EGTA (0,2 mM) foi reduzida de 18,4  3,3 % para 7,7  1,5 % e 5,0  1,2 % da contraÃÃo K60, respectivamente. A contraÃÃo tÃnica induzida por adiÃÃo de Ca2+ (2 mM) em preparaÃÃes mantidas na presenÃa de K+ (60 mM) ou ACh (3 ÂM), em meio sem Ca2+ contendo EGTA (0,2 mM), foi reduzida de 50,2  3,3 % e de 53,9  5,2 % para 10,6  2,6 % e 24,4  4,1 % pelo &#945;-pineno e 6,6  1,1 % e 10,9  3,5 % pelo &#946;-pineno, respectivamente. Em preparaÃÃes prÃ-tratadas com 1 mM de &#945;- ou &#946;-pineno, a contraÃÃo tÃnica induzida por ACh (60 ÂM) em Tyrode normal contendo verapamil (3 ÂM) foi reduzida de 29,0  4,1 % para 10,6  2,7 % e 12,5  2,2 % da K60, respectivamente. A resposta contrÃtil induzida pela cafeÃna (20 mM) em Tyrode normal foi potencializada de 47,8  3,2 % para 72,1  9,0 e 88,8  10,6 % da resposta controle pelo prÃ-tratamento da preparaÃÃo com &#945;- ou &#946;-pineno, respectivamente. Em meio sem Ca2+ com EGTA, a resposta contrÃtil da cafeÃna (20 mM) foi reduzida para 9,5  3,5 %. Sob essa condiÃÃo e, na presenÃa de &#945;- ou &#946;-pineno, a resposta nÃo foi alterada significativamente, correspondendo a 7,2  2,2 e 4,7  1,3 %, respectivamente. ApÃs esgotamento dos estoques intracelulares com CCh (100 mM), a contraÃÃo induzida por adiÃÃo de Ca2+ (2 mM), em meio sem Ca2+ com EGTA (0,2 mM) e verapamil (3 ÂM), foi potencializada pela adiÃÃo prÃvia de &#945;- ou &#946;-pineno de 30,7  2,1 % para 80,6  4,7 e 51,3  7,6 %, respectivamente (p < 0,05, teste de Bonferroni). Em estudos de retenÃÃo fracional de corante no trato gastrintestinal, o &#945;- e o &#946;-pineno aumentaram o esvaziamento gÃstrico, porÃm, a contratilidade induzida por ACh (3 ÂM) em tiras de fundo de estÃmago in vitro nÃo foi alterada pela presenÃa prÃvia de &#945;- e &#946;-pineno. O presente trabalho demonstra, pela primeira vez, que os monoterpenos &#945;- e &#946;-pineno apresentam efeito procinÃtico em ratos. Em tecidos isolados, nÃo afetam a contraÃÃo colinÃrgica em tiras de estÃmago, mas apresentam atividade miorrelaxante em tecido duodenal, por provÃvel interferÃncia com os mecanismos celulares mediados pela formaÃÃo de IP3. AlÃm disso, como demonstrado em Ãleo de rato, esses monoterpenos provavelmente ativam as vias de entrada de Ca2+ para a cÃlula em situaÃÃes de depleÃÃo dos estoques intracelulares
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7

Al-Qallaf, Fawzia Abbas. "Tricylic pinane derivatives." Thesis, University of Liverpool, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367303.

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8

Pihlajaniemi, J. (Jukka). "Pinnat avaruudessa." Master's thesis, University of Oulu, 2013. http://urn.fi/URN:NBN:fi:oulu-201304241195.

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Tämä tutkielma käsittelee kolmiulotteisen reaaliavaruuden kappaleita, joita kutsutaan pinnoiksi. Pinnan käsitteellä tarkoitetaan kaksiulotteista sileää kappaletta, jonka jokainen osa-alue voidaan kuvata joltakin tasolta jatkuvalla injektiolla. Pinta siis voidaan kuvata aina siten että funktio säilyttää kaksi muuttujan arvoa samoina ja määrää kolmannen näiden kahden perusteella. Tällaista funktiota, joka määrää pinnan, kutsutaan peitefunktioksi. Käytännössä kaikki pintoihin liittyvä operointi tapahtuu peitefunktioiden kautta. Peitefunktion toinen muuttuja kiinnitetään vakioksi, jolloin sen kuvaus tuottaa puhtaan käyrän. Pintojen operointi perustuu ajatukseen, että kyseessä on vain yksi kolmiulotteisen euklidisen avaruuden aliavaruus, jossa differentiaalilaskenta ja muut laskutoimitukset toteutuvat samoin kuin yleisessäkin tapauksessa. Jos halutaan tutkia pelkästään pinnalla olevan tietyn funktion käyttäytymistä, luodaan yhdistetty funktio, jonka sisäfunktiona on pinnan peitefunktio ja ulkofunktiona varsinainen tutkittava funktio, jolloin määrittelyjoukkona on vain jokin yksinkertainen taso. Funktio voidaan myös asettaa kahden erillisen pinnan välille siten että ensimmäinen pinta toimii lähtöjoukkona ja toinen maalijoukkona. Tämä tapahtuu luomalla yhdistelmäfunktio ensimmäisen pinnan peitefunktion palauttavasta käänteisfunktiosta, peitefunktioiden määrittelyjoukkoina olevien tasojen välisestä funktiosta sekä maalijoukkona olevan tason peitefunktiosta. Kolmen eri derivoituvan funktion yhdistelmäfunktio toteuttaa kaikki yleisimmät laskutoimitukset. Samoin kuin derivoinnin yhteydessä, myös integroinnissa pinnalla määritelty funktio on palautettava peitefunktion avulla takaisin tasolle ja operoitava siellä. Integrointi suoritetaan käyrää pitkin yhden muuttujan tapauksessa niinkuin yleisessäkin tapauksessa ja usean muuttujan integrointi suoritetaan määrittelyalueena toimivan suorakaiteen reunoja pitkin suuntaan tai toiseen. Tutkielman loppupuolella luodaan vielä silmäys pintojen topologisiin ominaisuuksiin, joista esille nousee kolme ominaisuutta, joiden avulla voidaan tarkastella pinnan yhtenäisyyttä, sen pinta-alan äärellisyyttä ja sitä, onko kyseessä yksi vaiko kaksipuolinen kappale. Aivan lopuksi tutkaillaan vielä monistoja, jotka ovat kolmiulotteisen pinnan yleistyksiä useampiulotteiselle avaruudelle. Tässä tapauksessa kolmiulotteisten pintojen tietyt itsestäänselvät ominaisuudet ovat mahdottomia osoittaa, mikä mutkistaa tutkimista.
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Patel, Ajay Balkrishna. "Molecular genetic studies of alpha pinene monooxygenase and pinene oxide decyclase." Thesis, Imperial College London, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.417212.

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OLIVEIRA, NETO Jerônimo Raimundo de. "Composição e variabilidade enantiomérica de α-pineno em Constrictotermes cyphergaster (Silvestri, 1901) (Isoptera; Termitidae)." Universidade Federal de Goiás, 2011. http://repositorio.bc.ufg.br/tede/handle/tde/1046.

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Made available in DSpace on 2014-07-29T15:12:46Z (GMT). No. of bitstreams: 1 Dissertacao Jeronimo R de O Neto.pdf: 732547 bytes, checksum: aec94205f1a668baad1af6da00c58d09 (MD5) Previous issue date: 2011-10-07<br>Termites are eusocial insects of isoptera order that part in seven families. In this study we analyze the chirality of &#945;-pinene in the defensive secretion that C. cyphergaster (Isoptera, Termitidae, Nasutitermitinae) this compound showed that among the majority of termite volatile. Along with checking the chirality was made a study seeking to correlate the production of each enantiomer, R(+)-&#945;-pinene and S(-)-&#945;-pinene, soil and climate data in dry and wet seasons of year 2002 and 2003. In the statistical data were used some statistical techniques such as Detrended Correspondence Analysis, to predict the model, Analysis of Variance for multiple comparison of means, and Redundancy Analysis to show a correlation matrix by another and that have a preview of the separation of groups. The DCA analysis showed that the model is linear. The analysis of variance for both the original data and for the transformed data showed that the averages do not differ statically at 95%, because they have p>0,05. The analysis of redundancy was not possible to explain the environment by the response matrix, in the 95% level of confidence. There was a production of enantiomeric &#945;-pinene by the C. cyphergaster populations, which can be an important factor to assist in chemotaxonomic studies of these specimens. There is increased production of the (S) enantiomer, but it was not possible to correlate this trend with soil and climatic factors in statistically significant odds. The variation of the enantiomérica composition can be related to factors other than soil and climate, such as ecological factors, genetic, or eusocial.<br>Os térmitas (cupins) são insetos eusociais da ordem Isoptera que se subdividem em sete famílias. Neste trabalho analisamos a quiralidade do &#945;- pineno presente na secreção defensiva do Constrictotermes cyphergaster (Isoptera, Termitidae, Nasutitermitinae), composto este que se mostrou majoritário entre os voláteis deste térmita. Juntamente com a verificação da quiralidade foi feito um estudo buscando correlacionar a produção de cada enantiômero, R(+)-&#945;-pineno e S(-)-&#945;-pineno, com dados edáfico-climáticos nas estações de seca e de chuva dos anos de 2002 e 2003. No tratamento estatístico dos dados foram usadas algumas técnicas estatísticas tais como análise de correspondência destendenciada, para prever o modelo; análise de variância, para comparação múltipla das médias; análise de redundância, para ter uma visualização da separação dos grupos e para correlacionar variáveis das matrizes resposta e ambiental. A análise destendenciada revelou que linear é o modelo mais apropriado. A análise de variância tanto para os dados originais quanto para os dados transformados mostraram que as médias não se diferenciam estatisticamente ao nível de 95 %, pois apresentam p>0,05. Pelas análises de redundância não foi possível a explicação da matriz resposta pelo ambiente, ao nível de 95 % de confiança. Houve uma produção enantiomérica de &#945;-pineno por parte das populações de C. cyphergaster, que pode ser um fator importante para auxiliar em estudos quimiotaxonômicos desta espécie. Há maior produção do enantiômero (S), porém não foi possível correlacionar esta tendência com fatores edáfico-climáticos dentro de probabilidades estatisticamente significativas. A variação da composição enantiomérica pode estar relacionada a outros fatores que não os edáfico-climáticos, tais como: fatores ecológicos, genéticos e eusociais.
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Wright, Georgina Kate, and desertscape2003@yahoo com. "Being There - Pinning Something Down." RMIT University. Architecture & Design, 2008. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080722.123009.

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'Being There' is about developing appropriate design processes which have the opportunity to give local communities a voice through the language of landscape. My Research aimed to learn from Australia's Indigenous conscience to attain more culturally, ecologically and socially accurate modes of engagement with the landscape throughout design practice. Stretching between Coober Pedy and Tweed Heads 'Being There' has become an exploration into the Landscape Architectural practice of engaging intimately with site and community through grounded techniques. In addition, the work aspires to engage with the idea of evolutionary design processes, which envisage landscape projects as points of open-ended interaction with site and place. 'Being there' is not only about spending time in one place, but also the techniques that these opportunities have given me such as documenting information gleaned through the eyes of local experts. As a practitioner, I can not do this without appropriately engaging in the richness and complexity of place defined and revealed through the challenge of communication. In this mode of design the processes of analysis and consultation act as lenses in curating the existing condition, defining its successes and failures in the cultural terms of people and place. Here, in contrast to my former practice, the intent is that design recovers landscape, rather than recreating it.
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Gross, Richard Edward. "Numerical simulations of flux pinning." Thesis, University of Cambridge, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243012.

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Harun, Azmir. "Computer simulations of Zener pinning." Thesis, King's College London (University of London), 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.421469.

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Rozic, Bozidar. "Konstruktion av lyftverktyg till pinjong." Thesis, Mälardalens högskola, Innovation och produktrealisering, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-43178.

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Detta examensarbete utgör den sista delen av högskoleingenjörsutbildningen med inriktning mot innovation och produktdesign vid Mälardalens högskola i Eskilstuna. Examensarbetets omfattning är 15 svenska högskolepoäng.   Projektet har genomförts på uppdrag av Scania AB, som är ett världsledande företag inom tillverkning av lastbilar och bussar. För att anpassa uppgiften till Scanias arbetssätt har alla deras grundvärden tagits i beaktning: kunden först, respekt för individen, eliminering av slöseri, beslutsamhet, laganda och integritet.   Huvudsyftet med projektet var att få en inblick i och presentera det centrala temat - produktutveckling från idé till ett färdigt förslag på lösning. Denna produktutvecklingsprocess är ett nödvändigt steg inför tillverkningen av en prototyp.   Uppgiften kom från Scanias transmissionsavdelning, och huvudmålet med den var att konstruera ett helt nytt mekaniskt lyftredskap som skulle anpassas till ett antal olika krav och önskemål. Syftet var att Scanias operatörer på transmissionsavdelningen skulle kunna använda lyftverktyget när de utför sitt dagliga jobb vid testmaskinen. Förväntningarna på lyftredskapet var att det skulle tillfredsställa kundbehoven, vara optimalt, lätthanterligt samt säkert vid användning.   Fokus i den här rapporten ligger på att visa utvecklingsprocessen, från idé till den färdiga produkten som ett sista steg innan prototyptillverkningen. Frågeställningar som behandlats i den här rapporten är:   -        Hur projektet planerats -        Hur analyser har utförts och hur framtagningen av kravspecifikationer har gått till -        Hur det säkerställts att rätt koncept valts -        Hur säkerställningen av lyftverktyget gått till   I ett försök att summera alla arbetsinsatser i det här projektet blev resultatet ett konstruktionsunderlag i form av CAD-ritningar av olika komponenter, hållfasthetsanalyser samt riskbedömningar som bekräftar att lyftredskapet kan användas i framtiden.
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15

Du, Toit Eben Francois. "Pinning control of disease networks." Thesis, University of Pretoria, 2015. http://hdl.handle.net/2263/56133.

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The modelling of contagion spread on contact networks provide valuable insights to epidemiologists and policymakers trying to control and eradicate diseases. This thesis proposes, implements and analyses a methodology for inserting disease contact networks of HIV into feedback control loops and applying open-loop pinning control to their nodes. Pinning control aims to medicate only a portion of an entire network in order to achieve the same outcomes that would be seen when all nodes are controlled. The control loops are simulated using networks ranging from size N = 100 nodes to N = 10000 nodes. Simulations aim to control the average maximum incidence in the networks by first estimating the reference average transmissibility from the statistical physics technique known as bond percolation. Once the average transmissibility is known, node-, network- and population mass-action models can be measured for incidence. Two selective pinning control strategies, namely proportional feedback and nonlinear model predictive control (NMPC), are compared with one another and also with a random pinning strategy. The budget, measured in quality-adjusted life years (QALYs), is added to the cost-function for NMPC control. It is shown that budget can indeed be controlled while incidence varies, while incidence may be controlled as budget varies. Pinning control of disease networks is a feasible methodology to analyse the future and steady-state outcomes of interventions in fast-spreading (high-risk) disease contact networks.<br>Modellering van die verspreiding van siektes oor kontak-netwerke verskaf waardevolle inligting aan beleidmakers en epidemioloë wat besluit op maatreëls vir voorkoming teen die siekte. Hierdie proefskrif hou n metode voor wat gebruik word om siekteverspreidings-netwerke te simuleer en te analiseer. Dit word gedoen op netwerke met nodusse wat varieer tussen N = 100 en N = 10000. Netwerke waarin HIV versprei word gebruik. Penbeheer word in n oopluskonfigurasie op elke nodus toegepas binne n geslote terugvoerlus op netwerkvlak. Penbeheer se doel is om slegs sekere nodusse te beheer om dieselfde uitkomste vir die voorkoms van HIV tydens n epidemie te meet. Die doel is om die gemiddelde waarskynlikheid vir oordrag van die siekte tussen nodusse te beheer en sodoende, deur middel van die tegniek genaamd bond percolation , te bepaal hoe groot die finale epidemie gaan wees. Sodra die gemiddelde waarskynlikheid bekend is, kan nodus-, netwerk- en populasiemodelle saamgestel word. Twee selektiewe penbeheer-strategieë (proporsioneel, en NMPC) word met mekaar en met n derde willekeurige tegniek vergelyk. Die beheer van begrotings, gemeet in quality-adjusted life years (QALYs), word deur die NMPC strategie hanteer. Siektes binne kontaknetwerke kan dus beheer word met selektiewe penbeheer. Penbeheer-strategieë word ook vergelyk op grond van die dosisse wat hulle benodig, asook die akkuraatheid van die bestendigde-toestand resultate. Penbeheer van siekteverspreidings-netwerke is n werkbare metode om toekomstige en bestendigde-toestand uitkomste van mediese ingrepe op netwerke mee te analiseer.<br>Thesis (PhD)--University of Pretoria, 2015.<br>tm2016<br>Electrical, Electronic and Computer Engineering<br>PhD<br>Unrestricted
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Medeiros, Vivianne Marcelino de. "Estudo fitoquímico de Croton grewioides Baill. e revisão da ocorrência das principais classes de metabólitos do gênero Croton." Universidade Federal da Paraí­ba, 2012. http://tede.biblioteca.ufpb.br:8080/handle/tede/6782.

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Made available in DSpace on 2015-05-14T12:59:51Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 16644791 bytes, checksum: 69ff0a5dda92d534738f14cc7f745210 (MD5) Previous issue date: 2012-06-06<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>Euphorbiaceae is the sixth largest family of plants in the world and it is represented by 300 genera and approximately 7500 species. Among the many genus that composes this family, Croton stands as the second largest, with about 800 species, possessing a neotropical distribution. It is one of the genus more studied, largely due to promising bioactive compounds produced by this group. To contribute to the chemotaxonomic study of family Euphorbiaceae and genus Croton, the extract of C. grewioides was subjected to a phytochemical study to isolate its chemical constituents, through usual chromatographic methods, and then to identify them by means of spectroscopic methods such as infrared, NMR1H and 13C and uni-dimensional, mass spectrometry, and comparison with literature data. The chemical study of aerial parts of C. grewioides resulted in the identification of thirteen compounds (ent-2-oxo-cleroda-3,13-dien-15α,16-olide-21-ate, ent-2-oxo-cleroda- 3,13-dien-15β,16-olide-21-ate, ent-15,16-epoxy-2-oxo-3,13(16),14-clerodatriene, ent-15,16- epoxy-20-acetoxy-2-oxo-3,13(16),14-clerodatriene, ent-15,16-epoxy-2-oxo-3,13(16),14- clerodatrien-20-oic acid, 2-oxo-5α,8α-cleroda-3,13-dien-15,16-olide, cleroda-3,13-dien- 15,16-olide-8-oic acid, ent-kaur-16-en-19-oic acid, ent-7α-acetoxytraquiloban-18-oic, octasyl trans-ferulate, 4-alyl-1,2-dimethoxybenzene, 2-hidroxy-4,6-dimethoxy-acetofenone e estigmast-4-en-3-one), and three first described in the literature, isolates the first time in gender and eight first reported in the species. The chemical composition of essential oil showed eighteen components, among which α-pinene (47.43%) showed up with major compound. Essential oil C. grewioides and α-pinene were tested for toxicity against Staphylococcus aureus SA-1199B and IS-58.The essential oil C. grewioides and α-pinene tested did not show any significant antibacterial activity against Staphylococcus aureus strains used, but were able to modulate the bacterial resistance to drugs.<br>A família Euphorbiaceae é a sexta maior família de vegetais do mundo representada por 300 gêneros e 7500 espécies. Dentre os inúmeros gêneros que compõe esta família, o gênero Croton se destaca como o segundo maior, com cerca de 800 espécies, possuindo uma distribuição neotropical. Esse gênero tem sido um dos mais estudados, em grande parte devido aos compostos químicos promissores produzido por este grupo. Visando contribuir para o estudo quimiotaxonômico da família Euphorbiaceae e do gênero Croton, o extrato de C. grewioides foi submetido a um estudo fitoquímico para isolar seus constituintes químicos, através de métodos cromatográficos usuais, e depois para identificá-los por meio de métodos espectroscópicos, tais como Infravermelho, RMN de 1H e 13C uni e bidimensionais, espectométricos, espectometria de massas, além de comparação com dados da literatura. O estudo químico das partes aéreas de C. grewioides resultou na identificação de treze substâncias (ent-2-oxo-cleroda-3,13-dien-15α,16-olideo-21-ato, ent-2-oxo-cleroda-3,13-dien- 15β,16-olideo-21-ato, ent-15,16-epoxi-2-oxo-3,13(16),14-clerodatrieno, ent-15,16-epoxi-20- acetoxi-2-oxo-3,13(16),14-clerodatrieno, ácido ent-15,16-epóxi-2-oxo-3,13(16),14- clerodatrien-20-óico, 2-oxo-5α,8α-cleroda-3,13-dien-15,16-olideo, ácido cleroda-3,13-dien- 15,16-olideo-8-óico, ácido ent-caur-16-en-19-óico, ent-7α-acetoxitraquiloban-18-óico, ferulato de octila, 4-alil-1,2-dimetoxibenzeno, 2-hidroxi-4,6-dimetoxi-acetofenona e estigmast-4-en-3-ona), sendo destes, três descritos pela primeira vez na literatura, dois isolados pela primeira vez no gênero e oito relatados pela primeira vez na espécie. A composição química do óleo essencial apresentou dezoito componentes, dentre os quais, α- pineno (47,43%) mostrou-se com o composto majoritário. O óleo essencial de C.grewioides e o α-pineno foram testados para a toxicidade contra Staphylococcus aureus SA-1199B e IS-58. O óleo essencial de C.grewioides e o α-pineno testado não mostraram qualquer atividade antibacteriana significativa contra as cepas Staphylococcus aureus usados, mas foram capazes de modular a resistência bacteriana a drogas.
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17

Hyyryläinen, L. (Lasse), J. (Jussi) Kurikka, and J. (Jukka) Pajukangas. "Suorakulmaisen pinnan tunnistaminen lisätyn todellisuuden sovelluksessa." Bachelor's thesis, University of Oulu, 2017. http://jultika.oulu.fi/Record/nbnfioulu-201709062841.

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Tiivistelmä. Lisättyä todellisuutta (Augmented Reality, AR) on tutkittu jo jonkin aikaa monenlaisten ammattialojen käyttöön, ja älylaitteiden yleistyessä viihteellinenlisätty todellisuus on myös yleistynyt. Lisätyn todellisuuden sovelluksia on laajasti kehitetty sotilas-, teollisuus-, opetus- ja viihdekäyttöön. Jotta lisätyn todellisuuden sovellukset voisivat toimia tehokkaasti, on sovellusten kyettävä ympäristön havainnoinnin lisäksi muodostamaan havainnoistaan sovelluksen kannalta tarkoituksenmukaisia tulkintoja. Suurimpia haasteita lisätyn todellisuuden sovelluksien kehityksessä on siis sovelluksen saamien havaintojen nopea ja luotettava prosessointi. Tutkimuksen yhteydessä kehitettiin peli, jossa virtuaalinen pallo lisätään pelilaitteen näytölle, ja pelaajan tehtävänä on liikuttaa kättään kameran edessä ja koskea palloa saadakseen pisteitä. Tutkimuksessa hyödynnettiin minitietokone Raspberry Pi2:ta, johon liitettiin kosketusnäyttö sekä kamera. Tutkimuksessa keskityttiin suorakulmaisen pelialueen tunnistamiseen erilaisissa olosuhteissa, kuten huono valaistus tai kun osan pelialueesta peittää jokin tunnistamista häiritsevä este. Pelialueen tunnistamisprosessissa voitiin valita kahdesta erilaisesta segmentointitavasta, Cannyn reunantunnistusalgoritmia hyödyntävästä segmentoinnista tai Otsun metodista. Ohjelman käyttämään suodatukseen pystyi myös valitsemaan monta erilaista suodatustapaa, kuten mediaanisuodatuksen ja Gaussin suodatuksen. Testeistä saatiin monia suuntaa antavia tuloksia. Cannyn reunantunnistusalgoritmin hyödyntäminen auttoi tunnistamaan pelialueen paremmin, kun osa alueesta oli peitetty ja kun pelialue oli kallistunut. Hyvissä olosuhteissa molemmat tunnistusmenetelmät toimivat yhtä hyvin. Otsun metodi auttoi paremmin tunnistuksessa huonossa valaistuksessa sekä oli hieman nopeampi Cannya hyödyntäneeseen metodiin verrattuna.Detection of rectangular surface in augmented reality application. Abstract. Augmented Reality (AR) has been researched for years to be used among several professional areas and since smart devices are becoming more and more common, entertainment use in augmented reality has also become more common. Augmented reality has been applied to military, education, manufacturing and entertainment use. So that augmented reality software can work efficiently, the software needs to be able to detect the environment and make appropriate interpretations. One of the biggest challenges in augmented reality software development is to quickly and reliably process observations. With the research, a game was developed where a virtual ball is added to the devices screen. The players task is to touch the ball while their hand is in front of the camera to score points. The research utilized a minicomputer, Raspberry Pi2, with a touchscreen and a camera attached. The research focused on finding a contour rectangular area in various kinds of circumstances, for example dim lighting or when an object is preventing accurate detection. The detection process for identifying the contour area has two different choices of segmentation methods, a segmentation method that utilizes Canny edge detection algorithm or Otsu thresholding. For filtering, one could choose from multiple filtering methods, for example median filtering or Gauss filtering. The tests gave several approximate results. Canny edge detection utilizing segmentation assisted the detection process better when some of the area was obstructed and when the area was tilted. Both, Otsu segmentation and the Canny edge detection utilizing segmentation assisted the algorithm equally well in good circumstances. Otsu method assisted the detection process better in dim lighting and was slightly faster in calculations.
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18

Zhao, Benzhong. "Interface pinning of CO₂ gravity currents." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/74498.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2012.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 41-43).<br>Carbon capture and storage (CCS) is widely regarded as a promising tool for reducing global atmospheric carbon dioxide (CO₂) emissions, while allowing continued use of fossil fuels in the 21st century. In CCS, CO₂ is captured at point sources such as coal power plants and injected deep underground in geological formations like saline aquifers for long-term storage. Given the large scale of CCS required to significantly reduce anthropogenic CO₂ emissions into the atmosphere, it is critical to understand the migration of CO₂ after injection, so that we can design effective injection strategies to minimize the leakage risks of CO₂ . Recent studies have demonstrated that simple models that incorporate the essential physics involved in CO₂ storage are able to make significant contributions in addressing important questions such as storage capacity and leakage risks in large scale CO₂ sequestration projects. Here, we study the impact of capillarity on the migration of CO₂ plume through exchange flow experiments of immiscible fluids. We show that capillarity leads to the development of striking features not present in miscible exchange flows, including a vertical pinned interface and sharp corners. We show that interface pinning is caused by capillary pressure hysteresis, and the amount of pinning scales with the relative strength of capillarity relative to gravity, as measured by the inverse of the Bond number. We demonstrate that capillary pressure hysteresis in porous media is caused by the fundamental difference in pore-scale invasion patterns between drainage and imbibition. In addition, we propose a sharp interface gravity current model that incorporates capillary pressure hysteresis and quantitatively explains the experimental observations, including the x ~ t1/2 spreading behavior at intermediate times and the fact that capillarity stops the spreading of a finite release current. These results suggest that interface pinning has important implications in the migration of CO₂ plume in deep saline aquifers.<br>by Benzhong Zhao.<br>S.M.
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19

Garcia, Daniel [UNESP]. "Respostas agronômicas e fitoquímicas de Achyrocline satureioides (Lam.) DC. cv. CPQBA 2 em função de adubação orgânica e espaçamentos." Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/151455.

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Submitted by DANIEL GARCIA null (danielgarciafic@hotmail.com) on 2017-08-27T17:36:24Z No. of bitstreams: 1 Tese Daniel 2017 (final).pdf: 2667665 bytes, checksum: d52bbb8d7efb917f07ce95d4147b2d70 (MD5)<br>Approved for entry into archive by Luiz Galeffi (luizgaleffi@gmail.com) on 2017-08-29T17:25:32Z (GMT) No. of bitstreams: 1 garcia_d_dr_bot.pdf: 2667665 bytes, checksum: d52bbb8d7efb917f07ce95d4147b2d70 (MD5)<br>Made available in DSpace on 2017-08-29T17:25:32Z (GMT). No. of bitstreams: 1 garcia_d_dr_bot.pdf: 2667665 bytes, checksum: d52bbb8d7efb917f07ce95d4147b2d70 (MD5) Previous issue date: 2017-06-30<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)<br>Este trabalho investigou pela primeira vez as respostas agronômicas e fitoquímicas das inflorescências e dos ramos de Achyrocline satureioides (Lam.) DC. cv. CPQBA 2 (macela) submetida a cinco doses de adubo orgânico (0, 30, 60, 90 e 120 t ha-1) e dois espaçamentos (50 e 100 cm entre plantas e entre linhas). Procedeu-se, 457 dias após o transplantio (DAT), a colheita e análise dos dados de altura, biomassa seca (ramos e inflorescências), seguidas das análises laboratoriais: extração (p/p%) e análise das substancias químicas do óleo essencial (%) bem como sua atividade antibacteriana; teores de luteolina, 3-O-metilquercetina, quercetina, ácido cafeico, rutina e trans-ferúlico (mg/100g) do extrato hidroalcoólico, além das análises do teor de flavonoides e fenóis totais (mg/100g) durante quatro idades de coleta (150, 240, 320 e 457 DAT). Os dados de altura das plantas demonstram que o tratamento 30 t ha-1 se destacou (110,89 cm). O teor de biomassa seca das inflorescências apresentou diferença estatística significativa apenas para o menor espaçamento (1.267,33 kg ha-1). Em relação ao teor de óleo essencial das inflorescências houve destaque significativo apenas para o tratamento controle (0,2935%) e para os ramos houve diferença significativa o tratamento 30 t ha-1 (0,1086%). A correlação entre o acúmulo de óleo (L.ha-1) com o total de biomassa seca atingida (Kg.ha-1) foi calculada, sendo os teores de óleo dos ramos (19,33 L ha-1) maiores que os das inflorescências (3,34 L ha-1). Foram identificadas 30 substâncias químicas no óleo essencial, tanto das inflorescências como dos ramos. α-Pineno foi a principal substância química detectada tanto nas inflorescências (58,96%) como nos ramos (46,53%), seguida de β-cariofileno e α-humuleno. Os teores de flavonoides nos ramos oscilou durante as quatro idades de coleta. Foi encontrada significância na terceira coleta (320 DAT) no tratamento 60 t ha-1, no menor espaçamento (281,2 mg/100g). Já os teores de fenóis totais apresentaram diferença significativa entre as idades, sendo 240 DAT (154,48 mg/100g) a idade que se destacou. Dentre os polifenois analisados, 3-O-metilquercetina acumulou em maiores teores nas inflorescências, sendo a maior dose de adubo no maior espaçamento o tratamento que acumulou maior teor (329,45 mg/100g). Os resultados para atividade antibacteriana dos óleos essenciais testados demonstraram que não houve inibição de Staphylococcus aureus e Escherichia coli nas concentrações testadas. Pode-se inferir com estes resultados que as doses crescentes de adubo e os dois espaçamentos não foram capazes de aumentar gradativamente a capacidade produtiva para a maioria das variáveis testadas.<br>This work has investigated for the first time the agronomic and phytochemical responses from inflorescences and branches of Achyrocline satureioides (Lam.) DC. cv. CPQBA 2 (macela) over five doses of organic fertilizer (0, 30, 60, 90 and 120 t ha-1) and two spacings (50 and 100 cm between plants and between rows). Harvest time were carried out, 457 days after transplanting (DAT), followed by laboratory analysis: extraction (w/w%) and analysis of chemicals substances from essential oil (%) as well as its antibacterial activity; luteolin, 3-O-methylquercetin, quercetin, caffeic acid, rutin and trans-ferulic acid (mg/100g) of the hydroalcoholic extract further the analyzes of the flavonoid and phenolic acid content (mg/100g) during four moments (150, 240, 320 and 457 DAT). Plant height data demonstrate that the 30 t ha-1 treatment stood out (110.89 cm). The dry biomass content of the inflorescences presented significant statistical difference only for the smallest spacing (1,267.33 kg ha-1). Regarding the essential oil content of the inflorescences, there was a significant difference only for the control treatment (0.2935%) and for the branches there was a significant difference in the treatment 30 t ha-1 (0.1086%). The correlation between the accumulation of oil (L.ha-1) and total dry biomass (Kg.ha-1) was calculated, with the oil contents of the branches (19,33 L ha-1) being higher than the inflorescences (3.34 L ha-1). Thirty chemicals substances were identified in the essential oil of inflorescences and branches. α-Pinene was the main chemical substance detected in inflorescences (58.96%) and branches (46.53%), followed by β-caryophyllene and α-humulene. The levels of flavonoids in the branches oscillated during the four collection moments. Significance was found in the third collection (320 DAT) in the treatment 60 t ha-1, in the smallest spacing (281.2 mg/100g). On the other hand, the phenolic acid contents presented significant difference between the ages, being 240 DAT (154.48 mg/100g) the moment that stood out. Among the polyphenols, 3-O-methylquercetin accumulated higher in inflorescence contents, with the highest dose of fertilizer in the largest spacing being the treatment with the highest content (329.45 mg/100g). The results for antibacterial activity of the essential oils tested showed no inhibition to Staphylococcus aureus and Escherichia coli at the concentrations tested. It can be inferred from these results that the increasing doses of fertilizer and the two spacings were not able to gradually increase the productive capacity for most of the variables tested.<br>CNPq: 140422/2014-5
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20

Schwarz, Stephen J. "Inhibition of pinking in cooked, uncured turkey rolls through the binding of non-pinking ligands to muscle pigments." Thesis, This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-10022008-063230/.

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21

Isik, Güldem. "Bifiltration of air polluted with alpha-pinene." Thesis, Växjö University, School of Technology and Design, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-1864.

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<p>The main objective of this investigation is to determine the effect of different physical and chemical parameters on the performance of biofilters, treating hydrophobic organic compounds. pinene was used as a model substance. Alpha-pinene is commonly found in wood, and therefore found at wood storage facilities and wood processing industries [1].</p><p>In this experiment two biofilter which were in equal size, were used. Both of them were filled with perlite for treating the alpha pinene contaminated air. One of the columns contained perlite partially coated with silicone oil to make the surface of perlite more hydrophobic. The filters were run at 5, 2.5 and 1.5 l min-1 air flow rate. The results showed that the silicone oil amended filter performed better at 2.5 l/min with a maximum removal rate of 20 g / (m3 h) in comparison with 15 g/ (m3 h) for the filter without oil. The efficiency was approximately the same for both filters at 1.5 and 5 l/min (40 compare to 35 g/m3 bed h). The flow rate was then set to 2.5 l/min once more. The results showed that the removal rate had increased to approximately 35 g/ (m3 h) and that the efficiency of both filters was approximately the same. The difference in results between the initial run and the later at 2.5 l/min is probably depending on that the microorganisms had become adapted to the α-pinene and that the microorganism communities developed differently in the two filters.</p><br><p>Syftet med denna studie var att undersöka om en ökning av biofilterytans hydrofobicitet kan förbättra effektiviteten med avseende på nedbrytning av en hydrofob förening såsom -pinen. En hydrofob yta skulle kunna medföra en ökning i adsorption av hydrofoba föroreningar vilket i sin tur skulle kunna öka tillgängligheten hos föroreningarna för mikroorganismerna. Försöken utfördes med hjälp av två biofilter fyllda med perlit. Ett filter fylldes med obehandlad perlit medan det andra filtret fylldes med perlit som blandats med silikonlja. Båda filtren ympades med mikroorganismer som växt på träflis. Dessa mikroorganismer är anpassade för att bryta ner -pinen då denna förening friges i stora mängder från trä. Resultaten visar att filtret innehållande perlit täckt med silikonolja var mer effektivt med avseende på nedbrytning avpinen under den första tiden av studien (de första 30 dagarna). Skillnaden i effektivitet mellan filtren minskade dock betydligt med tiden så att skillnaden inte var signifikant under resten av studien. Prover från vätskefasen från de båda filtren undersöktes i mikroskop. Dessa studier visade att olika mikroorganismer dominerade i de båda filtren. Filtret innehållande oljetäckt perlit dominerades av stavformiga bakterier medan filtret innehållande obehandlad perlit dominerades av kocker. Båda filtren innehöll en blandkultur av kocker och stavar. Dessutom växte svamp i båda filtren. Dessa resultat visar att en förändring av ytans hydrofobicitet inte bara kan leda till en ökad adsorption av förorening utan den kan också leda till att andra mikroorganismer får en dominerande roll i filtret. Den maximala nedbrytningshastigheten låg mellan 35 och 40 g pinen/(m3h) under hela studien förutom de 30 första dagarna oberoende av luftflödeshastighet (1,5 , 2,5 respektive 5 l/min). Den maximala nedbrytningshastigheten under inledningen av försöket var 15 g/(m3 h) för filtret innehållande obehandlad perlit och 20 g/(m3h) för filtret innehållande oljetäckt perlit. Luftflödet var 2,5 l/min under den inledande perioden. Ökningen i nedbrytningshastighet med tiden indikerar att mikroorganismerna anpassade sig till miljön. Den relativt konstanta nedbrytningshastigheten under resten av studien indikerar att det var de biokemiska reaktionerna som var hastighetsbegränsande och att masstransporten inte hade någon dominerande roll med avseende på att begränsa hastigheten.</p>
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22

Ruiz, de Austri Roberto. "Pinning down the neutralino as dark matter." Thesis, Lancaster University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.289040.

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23

Ding, An. "Domain wall pinning in patterned NiFe nanowires." Thesis, University of York, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.583367.

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In this work, domain wall (DW) formation in patterned nanowires has been investigated with Magnetic Force Microscopy (MFM) measurement and Object Oriented MicroMagnetic Framework (OOMMF) simulations. There has been intensive research interest into the behaviour of individual DWs in patterned nanostructures for potential applications in memory storage, logic gates and sensors. For memory applications, DWs can be pinned in patterned notched nanowires, creating multiple domains and hence multiple memory states which could be read out either in shift registers or directly if an entire nanowire forms the free layer of an MRAM (Magnetoresistive Random-Access Memory). For logic applications, simple geometric designed planer magnetic wires that are less than a micrometer in width can be used to construct DW logic element architecture and they can be integrated together into one circuit. For sensor applications, biosensors in particular, DWs can be pinned in the free layer of GMR (Giant Magnetoresistance) or MTJ (Magnetic Tunnel Junction) arrays, by magnetic membrane coated nanotags, with different states when the nanotag is absent. In this study, zigzag-shaped nanowires and twin pinning sites in nanowire have been investigated for potential RM (Racetrack Memory) applications, and notched fork- shaped nanowires have been considered in order to perform AND/OR logic functions. Also, the shape effect of the nanotag and its interaction with the free layer of the biosensor have been simulated quantitatively and qualitatively. Polycrystalline Permalloy (NisoFe2o) has been the material choice for the investigations of patterned magnetic elements in this study, due to its very high magnetic permeability, low coercivity, negligible magnetocrystalline anisotropy, significant anisotropy magnetoresistance and small magnetostriction. Consequently the magnetization can be largely constrained by shape anisotropy so as to lie along the long axis of the wire with spins parallel to the surfaces and edges.
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24

Hoffmann, Axel F. "Periodic pinning in superconducting Nb thin films /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC IP addresses, 1999. http://wwwlib.umi.com/cr/ucsd/fullcit?p9917952.

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Cerda, Gosselin Constanza. "Centro de intercambio agro-urbano. La Pintana." Tesis, Universidad de Chile, 2015. http://repositorio.uchile.cl/handle/2250/136038.

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Arenas, Castillo Marcelo. "CET La Pintana : centro educacional para trabajadores." Tesis, Universidad de Chile, 2009. http://www.repositorio.uchile.cl/handle/2250/115756.

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Machado, Joana Inês Santos. "Acetoxilação de α-Pineno com catalisadores heterogéneos". Master's thesis, Faculdade de Ciências e Tecnologia, 2010. http://hdl.handle.net/10362/4965.

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Dissertação apresentada na Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa para obtenção de grau de Mestre em Engenharia Química e Bioquímica<br>Este trabalho teve como objectivo estudar a acetoxilação de α-pineno a acetato de α-terpinilo, na presença de catalisadores heterogéneos. Os catalisadores seleccionados consistem em sílica mesoestruturada - SBA-15, funcionalizada com grupos sulfónicos. Os produtos da acetoxilação do α-pineno são acetatos (acetato de α-terpinilo, acetato de bornilo e acetato β-fenchilo) e hidrocarbonetos (canfeno, limoneno, tricicleno, y-terpineno, terpinoleno e α-terpineno). Numa primeira fase do trabalho, foram preparados quatro catalisadores SBA-15 (C1, C2, C3 e C4), com diferentes quantidades de grupos ácido sulfónico. Estes materiais foram caracterizados recorrendo a diferentes técnicas, sendo estas difracção de Raios X, isotérmicas de adsorção-dessorção de azoto a 77 K, microscopia electrónica de transmissão e análise elementar. Após a caracterização dos materiais, os catalisadores foram utilizados na acetoxilação de α-pineno. Observou-se que a actividade aumenta com o aumento da área superficial e volume de poros. Com o objectivo de optimizar as condições da reacção, foram estudados o efeito de diferentes parâmetros, tais como, massa de catalisador, temperatura, concentração inicial de α-pineno, na conversão de α-pineno e na selectividade para o produto desejado. No sentido de estudar a estabilidade catalítica do catalisador C1, o qual mostrou a actividade mais elevada, foram efectuados ensaios consecutivos com a mesma amostra e nas mesmas condições. Após cinco ensaios, o catalisador mostrou ainda uma boa actividade inicial. Do presente trabalho resultou um artigo, que será publicado numa revista científica da especialidade.
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Arredondo, Armijo Félix. "Participación Comunitaria y Salud Primaria: El caso de los Consejos de Desarrollo Local de la comuna de La Pintana." Tesis, Universidad de Chile, 2008. http://www.repositorio.uchile.cl/handle/2250/106660.

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Dávalos, B. Francisca. "Cambios y dinámicas sociales producto del desplazamiento forzado — Una mirada al delito desde los territorios de la segregación: el caso de El Castillo." Tesis, Universidad de Chile, 2008. http://repositorio.uchile.cl/handle/2250/106663.

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Goldstein, Mlynarz Nathalie. "Huertos familiares de Villa Las Rosas. Comuna de la Pintana." Tesis, Universidad de Chile, 2004. http://repositorio.uchile.cl/handle/2250/100532.

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La motivación de realizar este proyecto nace a partir de mi inquietud acerca de las importates mutaciones que han sufrido las ciudades latinoamericanas, en particular la ciudad de Santiago, producto del explosivo crecimiento demográfico y urbano. La falta de planificación y regulación ha generado una ciudad fragmentada, produciendo, entre otros, estragos en las periferias, donde la expansión urbana encapsuló zonas rurales de manera irresponsable ya que no estaban preparadas para afrontar grandes cambios que la urbanización traía consigo
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Rodríguez, Droguett Bárbara. "Plataforma forestal interactiva : centro para la educación ambiental y del paisaje urbano." Tesis, Universidad de Chile, 2006. http://repositorio.uchile.cl/handle/2250/100867.

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Montero, Javiera. "Renovación urbana "Villa Modelo Laura Rosa Méndez": comuna de La Pintana, Santiago de Chile." Tesis, uni, 2017. http://repositorio.uchile.cl/handle/2250/146811.

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33

Adaldo, Antonio. "Pinning Control of Networks: Choosing the Pinned Sites." Thesis, KTH, Reglerteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-138434.

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In this master thesis we address the problem of optimal pin selection in four elementary topologies. The augmented connectivity of a graph is defined as an extension of the algebraic connectivity in a pinning control scenario, and its key role in the pinning control problem is illustrated. For each of the considered topologies several pinning configurations are examined and they are compared in terms of the control strength they require to yield a desired value for the augmented connectivity. For each of the examined configurations a direct expression is provided for the control strength as a function of the augmented connectivity.
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Alderisio, Francesco. "Pinning Control of Networks: an Event-Triggered Approach." Thesis, KTH, Reglerteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-138436.

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In this master thesis we present an algorithm for distributed event-triggered pinning control of a network of nonlinear oscillators. In order to extend the concepts of connected, switching connected and slow switching topology to a pinning control scenario, we introduce the denitions of pinned, switching pinned and frequently pinned topology respectively. For each of these three topologies we try to identify the conditions under which the network achieves exponential convergence of the error norm, find a lower bound for the rate of convergence and prove that the trigger sequences do not exhibit Zeno behavior. Some numerical results are presented for each of the considered scenarios; further numerical results are presented for four elementary static topologies.
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Basset, Michael. "Pinning-Effekte kolumnarer Schwerionenspuren in Kuprat-Supraleiter-Dünnschichten." [S.l.] : [s.n.], 2001. http://ArchiMeD.uni-mainz.de/pub/2001/0148/diss.pdf.

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Rose, Richard Alexander. "Vortex motion and pinning in high temperature superconductors." Thesis, University of Southampton, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.315999.

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Crisan, Ioan Adrian. "Vortex matter, dynamics and pinning in superconducting materials." Thesis, University of Birmingham, 2013. http://etheses.bham.ac.uk//id/eprint/4091/.

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The enclosed body of work represents a compilation of published papers coveringwork carried out in the Universities of Birmingham, Bath and Southampton, UK, in theSecond University of Rome “Tor Vergata”, Italy, in the Nanoelectronics Research Institute (former Electrotechnical Laboratory) of AIST Tsukuba, Japan, and in the National Institute of Materials Physics (former Institute of Physics and Technology of Materials), Bucharest, Romania, during my research career over more than twenty years. The thesis comprises mainly research work on science and technology of high temperature superconducting cuprates of various compositions (Y-based, Bi-based, Tl-based, Hg-based, (Cu,C)-based) and morphologies (polycrystalline, single crystals, thin films, tapes, artificial superconducting superlattices). The major theme common to most of the research done on the abovementioned materials is the study of vortex matter, dynamics, and pinning, which determine a large number of superconducting properties for various applications. The submitted work presents the results of experimental and fundamental studies of superconducting materials in six main areas. These comprise: (i) synthesis and characterization (current-voltage characteristics, dissipation mechanisms, interaction between inter-and intra-grain vortices) of Y- and Bi-based superconducting ceramics; (ii) experimental and theoretical studies of current-induced unbinding of thermally-created vortex-antivortex pairs; (iii) fabrication and characterization of artificial superconducting superlattices; (iv) fabrication and characterization of anomalous superconductors, two- and multi-component superconductors, and exotic vortex matter; (v) study of vortex matter and dynamics by Scanning Hall Probe Microscopy; and (vi) science and technology of vortex pinning, including through self-assembling nanotechnology of pinning centres. There are a small number of publications that do not fall in the above-mentioned areas, but they are also in the larger field of science and technology of superconducting materials. The papers are presented essentially chronologically, with no attempt to group them into separate research areas, since the common philosophy and approach to the investigation of various superconducting materials is to determine how vortex matter, dynamics and pinning influence their physical properties.
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Balakrishnan, Sreenath. "A Numerical Elastic Model for Deforming Bat Pinnae." Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/36406.

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In bats, the directivity patterns for reception are shaped by the surface geometry of the pinnae. Since many bat species are capable of large ear deformations, these beampatterns can be time-variant. To investigate this time-variance using numerical methods, a digital model that is capable of representing the pinna geometry during the entire deformation cycle has been developed.<p> Due to large deformations and occlusions, some of the surfaces relevant to sound diffraction may not be visible and the geometry of the entire pinna has to be computed from limited data. This has been achieved by combining a complete digital model of the pinna in one position with time-variant sparse sets of three dimensional landmark data. The landmark positions were estimated using stereo vision methods. A finite element model based on elasticity was constructed from CT scans of the pinna post mortem. This elastic model was deformed to provide a good fit to the positions of the landmarks and retain values of smoothness and surface energy comparable to life. This model was able to handle ratios of data to degrees of freedom around 1:5000 and still effect life-like deformations with an acceptable goodness of fit.<br>Master of Science
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Osborn, Helen. "Undesirable pinking in meat and meat model systems." Thesis, University of Reading, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343321.

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Ercolano, Giorgio. "Superior pinning properties in nano-engineered YBa2Cu3O7-δ". Thesis, University of Cambridge, 2011. https://www.repository.cam.ac.uk/handle/1810/240614.

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Large electrical current transport in the absence of energy losses is thekey factor in commercial applications of high temperature superconductors. This thesis demonstrates an easy and inexpensive bottom-uptechnique to produce self assembled nanorods, segmented nanorodsas well as nanoparticles in YBa2Cu3O7-δ thin films grown by pulsedlaser deposition. The structural and morphological characteristic ofthe pinning landscapes produced are investigated and correlated totheir effects on the superconducting properties of the thin films. In particular two pinning landscapes are investigated: Ba2YNbO6nanorods are grown in YBa2Cu3O7-δ thin films using a Ba2YNbO6doped YBa2Cu3O7-δ pulsed laser deposition targets andBa2(Y/Gd)(Nb/Ta)O6 segmented nanorods together with (Y/Gd)2O3nanoparticles are grown in (Y/Gd)Ba2Cu3O7-δ thin films using aBa2YNbO6 + Gd3TaO7 doped YBa2Cu3O7-δ pulsed laser depositiontargets. The Ba2YNbO6 + YBa2Cu3O7-δ is deeply characterised and the effectsof the deposition parameters are analysed. Ba2YNbO6 is demonstratedto be an interesting novel pinning addition capable to increasethe critical current and to reduce the YBa2Cu3O7-δ critical currentsangular dependencies anisotropy. The Ba2YNbO6 + Gd3TaO7 + YBa2Cu3O7-δ is found to produce anew complex pinning landscape extremely effective. At high fieldsthe synergetic combination of the different defects typology is shownto generate an interesting new feature in the critical current angulardependencies. Chapter 1 is an introduction to superconductivity, the fundamentals ofthe field are briefly presented. In chapter 2 the discussion in focused onpinning in high temperature superconductors. Cuprates and in particularYBa2Cu3O7-δ are presented. The pinning phenomenon andthe practical pinning engineering in thin films is also discussed in thischapter. Chapter 3 describes the thin films preparation methods andthe characterisation techniques used in the research work. Chapter 4and 5 are focused on the Ba2YNbO6 doped YBa2Cu3O7-δ thin films. Chapter 4 is an introduction to Ba2YNbO6 doped YBa2Cu3O7-δ, thepreliminary results obtained on Ba2YNbO6 doped YBa2Cu3O7-δ thin films are shown in this chapter. The crystalline structure, the morphologyand the superconducting properties of thin films depositedadopting different deposition parameters are analysed and discussedin chapter 5. In chapter 6 the new complex pinning landscape ofBa2(Y/Gd)(Nb/Ta)O6 and (Y/Gd)2O3 in (Y/Gd)Ba2Cu3O7-δ is presented. Concluding remarks on the research described in the workends the thesis in a brief final chapter 7.
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Gutiérrez, Raimundo. "CCDAU La Pintana: centro capacitación desarrollo agricultura urbana." Tesis, Universidad de Chile, 2011. http://www.repositorio.uchile.cl/handle/2250/100359.

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“El trabajo del arquitecto se confunde con el del jardinero: desbrozar, preparar el terreno, escoger las especies y sembrarlas de forma organizada, cuidando después de que el paso del tiempo haga bien su trabajo” (Ábalos&Herreros). Según la Organización de las Naciones Unidas, para el año 2030, más del 60 por ciento de la población mundial vivirá en las ciudades, casi el doble de la cantidad actual y el triple de la de 19501. Se estima que los nuevos habitantes se localizarán principalmente en los centros urbanos de países en desarrollo donde se ha presentado un crecimiento veloz y poco controlado, subrayando la importancia de que las ciudades implementen estrategias para proteger el entorno natural. Conforme crecen las ciudades aumentan las necesidades de alimentos de las familias urbanas. En la mayor parte de las ciudades el índice de pobreza asciende al 30% y está aumentando, en consecuencia, cada vez más personas tienen dificultades para tener acceso a los alimentos que necesitan. En su histórico arraigo con la vida rural, los campesinos trasladan sus costumbres y tradiciones al ambiente urbano, desarrollando, entre otras actividades, prácticas derivadas de la agricultura, similares a las que realizaban en su lugar de origen. Éstas, debido a las condiciones del nuevo contexto se vieron desplazadas a espacios urbanos reducidos como solares, jardines, terrazas y azoteas, incluso áreas sobrantes y suelos de mala calidad o terrenos periféricos de mayor tamaño destinados a pequeños huertos y a la cría de animales de granja. Ellos ejercen de manera informal, la llamada Agricultura Urbana y Periurbana (AUP). Asegurar el suministro de alimentos apropiados a las zonas urbanas, incluyendo su producción a nivel urbano y periurbano y, proporcionar la información adecuada y capacitación a todos los interesados, comprendidos los consumidores urbanos, es un desafío de primer orden. Las necesidades son cada vez mayores en términos de suministrar orientación técnica a las instituciones e individuos interesados. Estamos en un periodo de profunda crisis medioambiental, desde que los intereses humanos se confrontaron con las barreras naturales, la relación hombre- naturaleza va en franco desequilibrio, para muchas personas la naturaleza está al servicio de sus intereses, y no es más que un continente del cual se puede extraer todo el contenido, y abocar todos los residuos sobrantes. El poblador rural o el suburbano con escasos recursos, bajos ingresos, incertidumbre laboral y un cada vez más limitado acceso a oportunidades, requiere un esfuerzo muy especial de los gobiernos, instituciones y agencias, y de toda la Región en forma global. El desarrollo y la apropiación de tecnologías es parte de uno de los mandatos recibidos por la Organización de las Naciones Unidas para la Agricultura y la Alimentación. A través de este proceso, que incluye capacitación y transferencia de tecnologías aptas para las condiciones socioeconómicas de los países, se intenta promover el desarrollo de herramientas que permitan mejorar las condiciones de vida, e incrementar el ingreso y la alimentación. El presente trabajo busca reconciliar y devolver la conciencia y la practica agroecológica del campo a la ciudad, este proyecto se enmarca en la capacitación y desarrollo de la agricultura en la ciudad, de modo de concientizar sobre la importancia de la naturaleza en nuestra existencia. El centro de capacitación y desarrollo de agricultura urbana (CCDAU) es un proyecto que nace de una necesidad de la comunidad, para poder emprender hacia un futuro con más y mejores oportunidades, ligando y potenciando la agricultura con la realidad social y cultural de la ciudad.
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Prizer, Timothy C. Sawin Patricia. "Pining for turpentine critical nostalgia, memory, and commemorative expression in the wake of industrial decline /." Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2009. http://dc.lib.unc.edu/u?/etd,2879.

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Thesis (M.A.)--University of North Carolina at Chapel Hill, 2009.<br>Title from electronic title page (viewed May. 20, 2010). "... in partial fulfillment of the requirements for the degree of Master of Arts in the Folklore Program, Department of American Studies." Discipline: Folklore; Department/School: Folklore.
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43

Kunt, Pinar [Verfasser]. "Essays in Applied Microeconomics / Pinar Kunt." Konstanz : Bibliothek der Universität Konstanz, 2018. http://d-nb.info/1167160959/34.

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Malcuit, J., S. Stedman, and J. Silvertooth. "Short Staple Variety Demonstrations, Pinal County." College of Agriculture, University of Arizona (Tucson, AZ), 1989. http://hdl.handle.net/10150/204838.

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45

Cedergren, Linnéa. "Physics-informed Neural Networks for Biopharma Applications." Thesis, Umeå universitet, Institutionen för fysik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-185423.

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Physics-Informed Neural Networks (PINNs) are hybrid models that incorporate differential equations into the training of neural networks, with the aim of bringing the best of both worlds. This project used a mathematical model describing a Continuous Stirred-Tank Reactor (CSTR), to test two possible applications of PINNs. The first type of PINN was trained to predict an unknown reaction rate law, based only on the differential equation and a time series of the reactor state. The resulting model was used inside a multi-step solver to simulate the system state over time. The results showed that the PINN could accurately model the behaviour of the missing physics also for new initial conditions. However, the model suffered from extrapolation error when tested on a larger reactor, with a much lower reaction rate. Comparisons between using a numerical derivative or automatic differentiation in the loss equation, indicated that the latter had a higher robustness to noise. Thus, it is likely the best choice for real applications. A second type of PINN was trained to forecast the system state one-step-ahead based on previous states and other known model parameters. An ordinary feed-forward neural network with an equal architecture was used as baseline. The second type of PINN did not outperform the baseline network. Further studies are needed to conclude if or when physics-informed loss should be used in autoregressive applications.
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46

Kayali, Mohammad Amin. "Spontaneous vortex phase and pinning in ferromagnetic-superconducting systems." Diss., Texas A&M University, 2004. http://hdl.handle.net/1969.1/409.

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Heterogeneous ferromagnetic-superconducting systems such as a regular array of ferromagnetic nano dots deposited on the top of a superconducting thin film have attracted many research teams both experimental and theoretical. The interest in these systems does not only stem from being good candidates for technological applications, but also because they represent a new class of physical systems where two competing order parameters can coexist. This work focuses on the theoretica laspects of these systems by studying the static and dynamics of few model systems. In the first part, the static properties of a superconducting thin film interacting with a ferromagnetic texture are considered within the London approximation. In particular, the ferromagnetic textures considered here are a circular dot of submicrometer size with in-plane magnetization, an elliptical dot magnetized in the direction perpendicular to the superconductor, and a ferromagnetic dot magnetized in the direction normal to the superconducting film and containing non magnetic cavities. I also consider the interaction of vortices in the superconductor with a ferromagnetic columnar defect which penetrates the supercondcting film. In each case the vector potential and magnetic field of the ferromagnet in the presence of the superconductor are calculated. Afterward the presence of vortices in the superconductor is assumed and the energy of vortex-texture system is found. The pinning potential and force supplied by the texture are then derived from the energy of interaction between the ferromagnet and superconductor. I show that if the magnetization of the ferromagnet exceeds a critical value then vortices are spontaneously created in the ground state of the system. Such spontaneous creation of vortices is possible mostly in a close vicinity of the superconducting transition temperature Ts. For every case, the threshold value of the magnetization at which vortices start to be spontaneously created in the SC is calculated as a function of the parameters of the texture geometry. The phase diagrams for transitions from vortexless regime to regimes with one or more vortices are determined for all cases. In the second problem, the transport properties of a ferromagnetic superconducting bilayer with alternating magnetization and vortex density are studied within a phenomenological model. I show that pinning forces do not appear for continuous distribution of vortices, so a discrete model for the bilayer system is constructed. Afterward, I calculate the pinning forces acting on vortices and antivortices resulting from highly inhomogeneous distribution of flux lines and prove that this system has strong transport anisotropy. In the absence of random pinning, the system displays a finite resistance for the current in the direction perpendicular to the domains while its resistance vanishes for the parallel current. The transport anisotropy strongly depends on temperature. I study this dependence and show that the ratio of parallel to perpendicular critical current is largest close to the superconducting transition temperature Ts and the vortex disappearance temperature Tv while it has a minimum in between them.
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47

Jackson, Benjamin. "Molecular genetics of #alpha# pinene metabolism in Pseudomonas fluorescens." Thesis, Imperial College London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343598.

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48

Spencer, Steven Charles. "Computer simulations of flux pinning in type II superconductors." Thesis, Imperial College London, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338422.

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49

Griffin, Kate. "Pinning Motherhood: The Construction of Mothering Identities on Pinterest." Master's thesis, University of Central Florida, 2014. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/6280.

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This research examines the new social media site, Pinterest, to uncover the processes through which mothers construct self- and public-identities. Despite being valued at over $3.8 billion dollars (Perez 2013), having an impressive user retention rate (Moore 2014), and having a highly gendered user base (Tekobbe 2013), Pinterest has been the site of limited sociological inquiry. Seventeen semi-structured qualitative interviews on mothering and Pinterest use were conducted with central Florida mothers who have a Pinterest account and at least one child between 6 months and 10 years old. Through analysis based in a grounded theory approach, three central themes emerged from the data: (1) mothers negotiate motherhood ideals, perpetuated through Pinterest, through drawing on gendered ideologies; (2) mothers' use of Pinterest both supports and impairs construction of positive self-identities, complexly overlapping with concerns of technology overuse; and (3) the compartmentalized nature of Pinterest facilitates the activation of multiple identities which allow 'escapes' from the pressures of motherhood and everyday responsibilities. Insights derived from this research can also be helpful in explaining the overlaps between online and offline identities, how women manage motherhood ideals, and the compartmentalization of self-identities.<br>M.A.<br>Masters<br>Sociology<br>Sciences<br>Applied Sociology
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Palermo, Xavier. "Proximity and flux pinning effects in superconductor-ferromagnet hybrids." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS231/document.

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Les systèmes hybrides supraconducteur-ferromagnétique présentent souvent de nouveaux phénomènes physiques, et pourraient également être utiles pour concevoir de nouvelles mémoires non-volatiles et haute densité pour les circuits supraconducteurs. Cette thèse étudie deux types différents d'hybrides SF, chacun suivant une approche possible de dispositif mémoire, en se focalisant sur les aspects fondamentaux. L'un porte sur l'effet de proximité dans des hétérostructures d'oxydes. Dans celles-ci, des corrélations triplet apparaissent, qui sont à la fois supraconductrices et polarisées en spin. Elles permettraient d'utiliser des effets de la spintronique comme la GMR, mais sont également très sensibles aux propriétés d'interface. Nous les avons étudiées dans des tricouches SFS d'oxydes, par des mesures de conductance. Celles-ci montrent des oscillations, en partie liées à ces états triplets. Nous observons également que les effets d'interface affectent les propriétés électroniques du ferromagnetique, en particulier lorsque cette couche est mince. Un autre genre d'interaction se produit par les champs de fuite provenant des structures de domaines. Des propositions théoriques récentes ont suggéré que de petites structures en tourbillon appelées skyrmion peuvent interagir avec la supraconductivité par ce mécanisme. Nous avons étudié ce couplage dans des bicouches, dans lesquelles les propriétés de transport sont dominées par la dynamique des vortex supraconducteurs. Nous avons vu une augmentation du courant critique en présence de skyrmions comme de domaines. Celles-ci créent également un effet Hall inhabituel dans l'état supraconducteur. La plupart de ces propriétés peuvent être expliquées qualitativement par la dynamique et le mouvement guidé des vortex<br>Superconductor-ferromagnet hybrid systems often bring about new physics and may as well be useful to design new non-volatile, high-density memory devices for superconducting electronics.In this thesis, we study two different types of SF hybrids, each following a possible approach to memory devices, but focusing on fundamental aspects. One is about the proximity effect in oxide heterostructures. In these, triplet correlations appear, that are both superconducting and spin-polarized. These enable using effects from spintronics like GMR, but are also very dependent on interface properties. We investigated these in SFS oxide trilayers by conductance measurements. These showed oscillations which may, in part, be related to these triplet states. We also observed that interface effects affect the electronic properties of the ferromagnet, especially when that layer is thin. Another type of interaction occurs through stray magnetic fields from the domain structures. Recent theoretical proposals suggested that small swirling spin textures called skyrmions could similarly interact with superconductivity through this mechanism. We investigated such coupling in bilayers, in which the superconducting vortex dynamics dominate the transport properties. We found that the presence of skyrmions and domains alike enhances the critical current. It also leads to an unusual Hall effect in the superconducting state. Most of these properties can be explained qualitatively in terms of vortex pinning and guided motion
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