Bibliografias temáticas / 15B51

Literatura científica selecionada sobre o tema "15B51"

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Publicado: 31 de agosto de 2024

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Artigos de revistas sobre o assunto "15B51"

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Tang, Wanchun, Fenglian He, Weiwei Ge, Guanghui Zheng, Juntao Hu, Lian Liang, Hui Li et al. "1551". Critical Care Medicine 48 (janeiro de 2020): 751. http://dx.doi.org/10.1097/01.ccm.0000648112.21400.df.

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Jaber, Besma, Pippa Simpson e Sheila Hanson. "1551". Critical Care Medicine 47 (janeiro de 2019): 751. http://dx.doi.org/10.1097/01.ccm.0000552294.09781.38.

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Knyrim, K. "Fall 1551". DMW - Deutsche Medizinische Wochenschrift 113, n.º 13 (13 de agosto de 2009): e49-e50. http://dx.doi.org/10.1055/s-0029-1236048.

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England, Richard. "Enigma Number 1551". New Scientist 202, n.º 2714 (junho de 2009): 26. http://dx.doi.org/10.1016/s0262-4079(09)61705-x.

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Kassem, Mona A., Blanca Gosalvez, Elisa Garzo, Alberto Fereres, Maria Luisa Gómez-Guillamón e Miguel A. Aranda. "Resistance to Cucurbit aphid-borne yellows virus in Melon Accession TGR-1551". Phytopathology® 105, n.º 10 (outubro de 2015): 1389–96. http://dx.doi.org/10.1094/phyto-02-15-0041-r.

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The genetic control of resistance to Cucurbit aphid-borne yellows virus (CABYV; genus Polerovirus, family Luteoviridae) in the TGR-1551 melon accession was studied through agroinoculation of a genetic family obtained from the cross between this accession and the susceptible Spanish cultivar ‘Bola de Oro’. Segregation analyses were consistent with the hypothesis that one dominant gene and at least two more modifier genes confer resistance; one of these additional genes is likely present in the susceptible parent ‘Bola de Oro’. Local and systemic accumulation of the virus was analyzed in a time course experiment, showing that TGR-1551 resistance was expressed systemically as a significant reduction of virus accumulation compared with susceptible controls, but not locally in agroinoculated cotyledons. In aphid transmission experiments, CABYV inoculation by aphids was significantly reduced in TGR-1551 plants, although the virus was acquired at a similar rate from TGR-1551 as from susceptible plants. Results of feeding behavior studies using the DC electrical penetration graph technique suggested that viruliferous aphids can salivate and feed from the phloem of TGR-1551 plants and that the observed reduction in virus transmission efficiency is not related to reduced salivation by Aphis gossypii in phloem sieve elements. Since the virus is able to accumulate to normal levels in agroinoculated tissues, our results suggest that resistance of TGR-1551 plants to CABYV is related to impairment of virus movement or translocation after it reaches the phloem sieve elements.
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Hernandes, Rodrigo T., Miguel A. De la Cruz, Denise Yamamoto, Jorge A. Girón e Tânia A. T. Gomes. "Dissection of the Role of Pili and Type 2 and 3 Secretion Systems in Adherence and Biofilm Formation of an Atypical Enteropathogenic Escherichia coli Strain". Infection and Immunity 81, n.º 10 (29 de julho de 2013): 3793–802. http://dx.doi.org/10.1128/iai.00620-13.

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ABSTRACTAtypical enteropathogenicEscherichia coli(aEPEC) strains are diarrheal pathogens that lack bundle-forming pilus production but possess the virulence-associated locus of enterocyte effacement. aEPEC strain 1551-2 produces localized adherence (LA) on HeLa cells; however, its isogenic intimin (eae) mutant produces a diffuse-adherence (DA) pattern. In this study, we aimed to identify the DA-associated adhesin of the 1551-2eaemutant. Electron microscopy of 1551-2 identified rigid rod-like pili composed of an 18-kDa protein, which was identified as the major pilin subunit of type 1 pilus (T1P) by mass spectrometry analysis. Deletion offimAin 1551-2 affected biofilm formation but had no effect on adherence properties. Analysis of secreted proteins in supernatants of this strain identified a 150-kDa protein corresponding to SslE, a type 2 secreted protein that was recently reported to be involved in biofilm formation of rabbit and human EPEC strains. However, neither adherence nor biofilm formation was affected in a 1551-2sslEmutant. We then investigated the role of the EspA filament associated with the type 3 secretion system (T3SS) in DA by generating a doubleeae espAmutant. This strain was no longer adherent, strongly suggesting that the T3SS translocon is the DA adhesin. In agreement with these results, specific anti-EspA antibodies blocked adherence of the 1551-2eaemutant. Our data support a role for intimin in LA, for the T3SS translocon in DA, and for T1P in biofilm formation, all of which may act in concert to facilitate host intestinal colonization by aEPEC strains.
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López-Sesé, A. I., e M. L. Gómez-Guillamón. "Resistance to Cucurbit Yellowing Stunting Disorder Virus (CYSDV) in Cucumis melo L." HortScience 35, n.º 1 (fevereiro de 2000): 110–13. http://dx.doi.org/10.21273/hortsci.35.1.110.

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Forty-four accessions of Cucumis melo L. and related wild species were tested for reaction to a yellowing disease, incited by the recently identified cucurbit yellowing stunting disorder virus (CYSDV), under natural and controlled-inoculation conditions. The C. melo TGR-1551 accession and one Cucumis metuliferus Naud. accession were asymptomatic. The segregation ratios obtained following controlled inoculations of the family produced by crossing TGR-1551 with the susceptible Spanish cv. Piel de Sapo revealed that the resistance to CYSDV in TGR-1551 is conditioned by a dominant allele at one locus. The name Cucurbit yellow stunting and symbol Cys is proposed for this locus.
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Friedman, David, e Paul Schlapobersky. "Leonardo Bufalini's Orthogonal Roma (1551)". Thresholds 28 (janeiro de 2005): 10–16. http://dx.doi.org/10.1162/thld_a_00316.

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Versendaal, Rozanne. "Het Brusselse zottenfeest van 1551". Madoc 37, n.º 1 (1 de dezembro de 2023): 35–45. http://dx.doi.org/10.5117/madoc2023.1.005.vers.

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KLEIN, JOHN LENON, ALEXANDRA FABIELLE PEREIRA VIANA, PATRÍCIA MACHADO MARTINI, SANDER MARTINHO ADAMS, CRISTIANE GUZATTO, RAFAEL DO AMARAL BONA, LEONEL DA SILVA RODRIGUES, DARI CELESTINO ALVES FILHO e IVAN LUIZ BRONDANI. "DESEMPENHO PRODUTIVO DE HÍBRIDOS DE MILHO PARA A PRODUÇÃO DE SILAGEM DA PLANTA INTEIRA". Revista Brasileira de Milho e Sorgo 17, n.º 1 (31 de março de 2018): 101. http://dx.doi.org/10.18512/1980-6477/rbms.v17n1p101-110.

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RESUMO - Avaliar as características agronômicas e produtivas de híbridos de milho foi o objetivo deste trabalho. O delineamento experimental utilizado foi de blocos ao acaso, com quatro tratamentos e cinco repetições, sendo os tratamentos compostos por quatro híbridos de milho Agroeste: AS 1551 Convencional, AS 1551 PRO 2, AS 1656 PRO 3 e AS 1596 PROX. Foram avaliadas as características morfométricas da planta, a participação dos componentes estruturais no material ensilado e o potencial produtivo dos híbridos. O híbrido AS 1596 PROX apresentou maior número de folhas totais e senescentes, além de apresentar maior altura da planta e da inserção da espiga. As maiores participações de colmo (37,42%) e folha (16,25%) no material ensilado foram obtidas no híbrido AS 1656 PRO 3. Os híbridos AS 1551 Convencional e AS 1551 PRO 2 apresentaram maiores participações de espiga (52,42% e 50,01%) e de grãos no material ensilado (32,74% e 32,88%). As produtividades foram semelhantes, com valores de 37.662,3 a 45.093,0 kg/ha de matéria verde e de 14.404,7 a 16.421,6 kg/ha de matéria seca. O desempenho produtivo dos híbridos foi satisfatório, e a escolha deles vai depender do objetivo de cada propriedade, na busca de maiores benefícios e facilidades de manejo.Palavras-chave: Zea mays, componentes estruturais, grãos, matéria seca, diâmetro de colmo.PRODUCTIVE PERFORMANCE OF MAIZE HYBRIDS FOR THE PRODUCTION OF SILAGE USING THE WHOLE PLANTABSTRACT - The objective of this work was to evaluate the agronomic and productive characteristics of maize hybrids. The experimental design was a randomized block design with four treatments and five replicates. The treatments were composed of four Agroeste maize hybrids: AS 1551 Conventional, AS 1551 PRO 2, AS 1656 PRO 3 and AS 1596 PROX. The morphometric characteristics of the plant, the participation of the structural components in the ensiled material and the productive potential of the hybrids were evaluated. The AS 1596 PROX hybrid presented a higher number of total and senescent leaves, besides showing higher plant height and spike insertion. The highest stakes (37.42%) and leaf (16.25%) in the ensiled material were obtained in the hybrid AS 1656 PRO 3. The hybrids AS 1551 Conventional and AS 1551 PRO 2 showed greater spike (52.42 % and 50.01%) and grains (32.74% and 32.88%) participation in the ensiled material. The yields were similar with values from 37,662.3 to 45,093.0 kg/ha of green matter and from 14,404.7 to 16,421.6 kg/ha of dry matter. The productive performance of the hybrids was satisfactory, and their choice will depend on the objective of each property, in the search for greater benefits and management facilities.Keywords: Zea mays, structural components, grains, dry matter, stem diameter.
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Teses / dissertações sobre o assunto "15B51"

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Soares, Edite Rute dos Santos Bentos. "O concelho portuense em 1551". Master's thesis, Porto : [Edição do Autor], 2001. http://hdl.handle.net/10216/22755.

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O Concelho Portuense em 1551, estuda um ano camarário do Porto, onde são focados os problemas que fazem parte do dia-a-dia do cidadão portuense, através dos oficiais concelhios e de outros oficiais com actuação diferentes na vereação. Nestas actas são focados os problemas de higiene, segurança e manifestações religiosas que faziam parte do Porto, para além dos administrativos e económicos. Trata-se do estudo, de um registo verdadeiro que, na pessoa do escrivão relata a vida económica, política e social, de uma cidade em meados do século XVI.
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Soares, Edite Rute dos Santos Bentos. "O concelho portuense em 1551". Dissertação, Porto : [Edição do Autor], 2001. http://aleph.letras.up.pt/F?func=find-b&find_code=SYS&request=000122734.

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O Concelho Portuense em 1551, estuda um ano camarário do Porto, onde são focados os problemas que fazem parte do dia-a-dia do cidadão portuense, através dos oficiais concelhios e de outros oficiais com actuação diferentes na vereação. Nestas actas são focados os problemas de higiene, segurança e manifestações religiosas que faziam parte do Porto, para além dos administrativos e económicos. Trata-se do estudo, de um registo verdadeiro que, na pessoa do escrivão relata a vida económica, política e social, de uma cidade em meados do século XVI.
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Jung, Andreas. "Sequentielle Genotypisierung von Pseudomonas aeruginosa-Isolaten und Übereinstimmung von bakteriologischen Proben aus dem oberen und unteren Respirationstrakt von Patienten mit cystischer Fibrose". Doctoral thesis, Humboldt-Universität zu Berlin, Medizinische Fakultät - Universitätsklinikum Charité, 2005. http://dx.doi.org/10.18452/15351.

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Die Frage nach adäquaten mikrobiologischen und molekulargenetischen Methoden, um die Kolonisation des Respirationstrakts von Mukoviszidose-Patienten mit Pseudomonas aeruginosa nachzuweisen und zu charakterisieren, wird kontrovers diskutiert. Von 38 klinisch stabilen Patienten mit cystischer Fibrose (CF) wurden sequentiell im Abstand von 18 Monaten Proben aus Rachenabstrich, Sputum und Bronchiallavage (BAL) entnommen und bezüglich Pseudomonas-Nachweis untersucht. Die Pseudomonas-Stämme wurden mittels Random Amplified Polymorphic DNA (RAPD)-Analyse und Pulsfeld-Gelelektrophorese (PFGE) von DNA-Makrorestriktionsfragmenten typisiert und bezüglich der Frage nach genetisch divergierenden Isolaten innerhalb des selben Individuums sowie nach möglichen longitudinalen genetischen Veränderungen evaluiert. Sensitivität, negative und positive prädiktive Werte und Spezifität, um eine P. aeruginosa-Besiedlung zu erkennen, waren 36%, 74%, 83% und 96% im Falle der Kulturen aus dem Oropharynx von nicht-expektorierenden Patienten und 92%, 94%, 100% und 100% für Sputumkulturen von expektorierenden Probanden. RAPD-Analyse und PFGE waren in der Lage, zwischen unterschiedlichen Pseudomonas-Stämmen zu diskriminieren, wobei nur die DNA-Makrorestriktion zwischen Subtypen unterscheiden konnte. Die Genotypen der Pseudomonas-Isolate aus Rachenabstrich und Sputum divergierten in 55% und 40% zu den Isolaten der BAL. Longitudinale Variationen des Genotyps wurden in 62% der Fälle beobachtet, die Hälfte davon war nur mittels bronchoskopisch gewonnener Proben erkennbar. Zusammengefasst besitzen Sputumproben bezüglich des Pseudomonas-Nachweises dieselbe Wertigkeit wie Kulturen aus der BAL, während Rachenabstriche in einer frühen Krankheitsphase für die Charakterisierung der bakteriellen Flora des unteren Respirationstrakts wenig geeignet sind. Die Methode der DNA-Makrorestriktion kann als zuverlässige Technik für epidemiologische Untersuchungen empfohlen werden. Unterschiedliche Genotypen innerhalb desselben Individuums und longitudinale genetische Alterationen sind häufig, jedoch unter Umständen nur bronchoskopisch nachweisbar.
There is controversy about adequate specimen to detect and characterise colonisation of cystic fibrosis (CF) airways by Pseudomonas aeruginosa. Oropharyngeal, sputum and bronchoalveolar lavage (BAL) samples were evaluated sequentially from 38 stable CF patients for the detection of P. aeruginosa. Pseudomonas strains were typed by random amplified polymorphic DNA (RAPD) analysis and pulsed-field gel electrophoresis (PFGE) of DNA macrorestriction fragments. The occurrence of genetically different isolates within the same host and longitudinal variations in the genotype during repeated examinations was assessed. Sensitivity, negative and positive predictive values and specificity to detect P. aeruginosa were 36%, 74%, 83% and 96% for oropharyngeal cultures in non-expectorating patients and 92%, 94%, 100% and 100% for sputum cultures from expectorating patients, respectively. RAPD analysis and PFGE were suitable to characterize P. aeruginosa CF isolates, although only DNA macrorestriction was able to distinguish between identical and closely related strains. Genotypes of Pseudomonas isolates recovered from oropharyngeal swabs and sputum differed to the strains recovered by bronchoscopy in 55% and 40%, respectively. In 62% longitudinal variations in the genotype occurred. Half of these alterations were only detectable from bronchoscopically obtained samples. In conclusion, sputum samples have the same value as specimens from BAL to detect P. aeruginosa colonisation, whereas cultures from the oropharynx are not suitable for characterising the bacterial conditions in the CF lungs in an early disease state. DNA macrorestriction is recommended as an excellent tool for epidemiological investigations. Different genotypes within the same host and longitudinal genetic alterations are common and may be detectable in the BAL fluid exclusively.
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Wethekam, Stephan Ernst. "Ladungsaustausch schneller Edelgasatome und Fullerene mit Festkörperoberflächen". Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2009. http://dx.doi.org/10.18452/15951.

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In dieser Arbeit werden Modellsysteme der Wechselwirkung von Atomen, Molekülen und deren Ionen mit Festkörperoberflächen studiert. Die Dissertation besteht aus drei Teilen. Im ersten Teil werden Experimente zur Streuung von He0 und He+ mit keV Energien unter streifendem Einfall an Al(111), Al(100) und Al(110) vorgestellt. Anteile überlebender Ionen und Verschiebungen der Winkelverteilungen für einlaufende Atome und Ionen sind in guter Übereinstimmung mit theoretischen Auger-Neutralisationsraten und He-1s-Grundzustandsenergieverschiebungen. Damit liegt ein detailliertes mikroskopisches Verständnis dieses Modellsystems der Atom-Oberflächen-Wechselwirkung vor. Die Studien wurden auf Edelgase und Oberflächen mit komplexerer elektronischer Struktur sowie Ionisationsprozesse erweitert. Im zweiten Teil wird die Formierung von doppelt-angeregten He-Atomen bei der Streuung von He2+ an Ni(110) und Fe(110) mittels Autoionisationsspektren studiert. Diese zeigen eine ausgeprägte Sensitivität auf die Belegung der Oberflächen mit Adsorbaten und deren Umordnung, Desorption bzw. Lösung im Volumen des Festkörpers bei Erhöhung der Temperatur. In diesem Rahmen ergibt sich eine alternative Interpretation aktueller Arbeiten, in denen Autoionisationsspektren zur Ableitung der Spin-Polarisation von Ni- und und Fe-Oberflächen verwendet wurden. Im dritten Teil werden Winkelverteilungen, Fragmentspektren und Ladungsanteile für die streifende Streuung von C60-Molekülionen mit an Al(100), Be(0001) und LiF(100) studiert. Es wird gezeigt, dass die elastischen Eigenschaften des Fullerens durch Metalloberflächen stark modifiziert werden. Anhand von Verschiebungen von Winkelverteilungen für einfach- und zweifach-geladene einlaufende Ionen werden erstmalig Abstände des Elektroneneinfangs für positiv geladene Fullerenionen vor Metalloberflächen gemessen. Für LiF(100) treten ausgeprägte Anregungen der Moleküle durch das periodische elektrische Feld der Oberfläche auf.
This work is devoted to the study of model systems for the interaction of atoms, molecules, and their ions with solid surfaces. The thesis consists of three parts. In the first part, He atoms and ions with keV energies are scattered under grazing angles of incidence from Al(111), Al(100), and Al(110). Fractions of surviving ions and shifts of angular distributions for incident atoms and ions, are in good agreement with theoretically calculated Auger neutralization rates and He 1s ground-state energy shifts. A detailed microscopic understanding for a model system of ion-surface interactions is concluded. The studies are extended to noble gas atoms and surfaces with a more complex electronic structure as well as the Auger ionization process. In the second set of experiments, the formation of doubly excited states of He atoms during collisions of He2+ ions with Ni(110) and Fe(110) is studied via autoionization spectra. The electron spectra show a pronounced dependence on the coverage of the target surface with adsorbates. Thermal desorption and dissolution of surface contaminations into the bulk at elevated temperatures provide an alternative interpretation of recent work where the local electron spin polarization of Ni and Fe surfaces was deduced from autoionization spectra. In the third part, angular distributions, fragmentation, and charge fractions are studied for grazing scattering of C60 fullerene ions from Al(100), Be(0001), and LiF(100). A strong perturbation of the elastic properties of the fullerene by a nearby metal surface is demonstrated. Shifts of angular distributions for incident singly and doubly charged ions for the metal surfaces provide the first information on distances of electron transfer for positively charged fullerenes in front of metal surfaces. For the LiF(100) surface, pronounced internal excitations due to interactions with the periodic electric field at the surface are observed.
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Davies, Brian Patrick. "A homogenous fluorescence assay of micro RNA maturation". Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2008. http://dx.doi.org/10.18452/15851.

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Micro RNA sind nicht-kodierende dsRNA ~22 Nukleotiden lang, die eine wichtige Rolle in der Entwicklung und Regulation in beinahe allen Eukaryoten spielen. MiRNAs binden target mRNA, was zu einer Blockierung der Proteintranslation führt. Viele Krankheiten sind bekannt, die durch veränderte miRNA Expressionsmuster entweder beeinflusst oder verursacht werden. Demnach könnte eine Manipulation der miRNA-Bildung einen therapeutischen Ansatz darstellen. MiRNA werden im Zytoplasma von längeren haarnadelförmigen prekursor RNA (pre-miRNA) durch das Enzym Dicer freigsetzt. Inhibition dieser Spaltung könnte durch spezifische pre-miRNA-bindende Moleküle erfolgen. Selektive Binder der pre-miRNA als Inhibitoren der miRNA-Reifung können durch testen von Substanzbibliotheken mit Hochdurchsatzscreening (HTS) gefunden werden. Diese Arbeit beschreibt den ersten homogenen Assay der miRNA-Reifung. Eine Fluoreszenzsonde in Form einer pre-miRNA wurde benutzt, die einen 5´-Fluorophor (FAM, Cy3, oder TMR) und einen 3´-Quencher (DABCYL) aufweist. Durch die nahe Nachbarschaft von Fluorophor und Quencher in der nativen Haarnadelstruktur erfolgt Fluoreszenzlöschung. Dicer spaltet diese Struktur effizient, was zur Dissoziation von Fluorophor und Quencher und somit zu einem Fluoreszenzanstieg führt. Der Assay wurde für HTS optimiert. Die ersten Verbindungen wurden auf deren Inhibition der miRNA-Reifung getestet. Mit einem Duplexassay, wobei zwei unterschiedliche pre-miRNA Sonden mit verschiedenen Fluorophoren eingesetzt wurden, konnte etwas spezifische Inhibition gezeigt werden. Der Assay wurde in Zellen durchgeführt und der Fluoreszenzanstieg mit Fluoreszenzmikroskopie detektiert. Somit ist ein Zell-basiertes Screening von Inhibitoren möglich. Eine einfachere Synthese der Sonde mittels in vitro Transkription und anschließender enzymatischen Ligation wurde entwickelt. Verwendung des Assays um hoch selective Inhibitoren der miRNA-Reifung zu entdecken könnte zu therapeutischen Ansätzen führen.
Micro RNAs (miRNAs) are non-coding dsRNAs of ~22 nucleotides that play a vital role in development and regulation in nearly all eukaryotes. MiRNAs bind target mRNA, thus blocking protein translation. Many diseases have been found to be influenced or caused by aberrant expression of miRNAs. A manipulation of miRNA formation may have therapeutic potential. MiRNAs are cleaved from longer hairpin precursor RNA (pre-miRNA) in the cytoplasm by the enzyme Dicer. It might be possible to inhibit this cleavage through specific pre-miRNA binding molecules. Selective binders of pre-miRNA as inhibitors of miRNA maturation can be found by testing large libraries of substances through high throughput screening (HTS) using an appropriate assay. This work describes the first homogenous assay of miRNA maturation. A fluorescent probe in the form of a pre-miRNA containing a 5´-fluorophore (FAM, Cy3, or TMR) and a 3´-quencher (DABCYL) was used. This ‘beacon’ in its native hairpin formation brings the fluorophore and quencher moieties into close proximity, resulting in fluorescence quenching. Dicer efficiently cleaves this structure, leading to dissociation of fluorophore and quencher and thus a fluorescence increase. In the presence of an RNA ligand that blocks cleavage, a lower fluorescence increase is seen. The assay was optimized for HTS. The first compounds were tested for their inhibition of miRNA maturation. Using a duplex assay, with two different pre-miRNA probes each containing a different fluorogenic group, some specific inhibition was shown. The assay was performed in cells using fluorescence microscopy to measure the fluorescence. This would allow for a cell-based screening of inhibitors. A simpler approach of beacon synthesis using in vitro transcription followed by enzymatic ligation was also established. Use of this assay to discover highly selective inhibitors of miRNA maturation may lead to disease therapeutics.
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Komin, Nukri Randolf. "Detection of gamma rays from the supernova remnant RX J0852.0-4622 with H.E.S.S". Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2006. http://dx.doi.org/10.18452/15551.

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Es wird angenommen, dass schalenartige Supernova-Reste wesentlicheQuellen der galaktischen kosmischen Strahlung sind. Die Beschleunigungvon Teilchen in diesen Objekten kann mit hochenergetischerGammastrahlung (Energien zwischen 30GeV und 30TeV) nachgewiesenwerden.In dieser Arbeit wird die Beobachtung von Gammastrahlung desschalenartigen Supernova-Restes RX J0852.0-4622 beschrieben. DieseBeobachtungen wurden im Februar 2004 mit dem High Energy StereoscopicSystem (H.E.S.S.) durchgeführt. H.E.S.S., ein System von vierabbildenden Cherenkov Teleskopen, kann Gammastrahlung im Bereichzwischen 100GeV und einigen 10TeV nachweisen und ist zur Zeit dasleistungsfähigste Instrument in diesem Energiebereich.Die Emission von Gammastrahlung von RX J0852.0-4622 wurde mit einerSignifikanz von 12 sigma bei einer Belichtungszeit von 3.2hnachgewiesen. Die Morphologie der Emissionsregion ist ausgedehnt undkorreliert mit der Morphologie der Röntgenstrahlung. Eindifferenzielles Energiespektrum des Photonenflusses wurde im Bereichzwischen 0.5 und 10 TeV rekonstruiert. Das Spektrum folgt einemPotenzgesetz mit einem spektralen Index von etwa 2.1. Der integriertePhotonenfluss oberhalb von 1 TeV ist auf dem Niveau des Flusses desKrebsnebels. RX J0852.0-4622 ist daher eine der hellstenGammastrahlungsquellen am Himmel und der zweite Supernova-Rest dessenausgedehnte Gammastrahlungsemission nachgewiesen werden konnte.Gammastrahlung kann durch inverse Compton-Streuung vonrelativistischen Elektronen oder durch starke Wechselwirkungen vonProtonen mit dem interstellaren Material erklärt werden. Der erwarteteEnergiefluss von inverser Compton-Streuung an der kosmischenMikrowellenstrahlung wurde abgeschätzt. Dieser ist um einigeGrößenordnungen geringer als der beobachtete Wert. Daher ist eswahrscheinlich, dass die beobachtete Gammastrahlung ausProton-Wechselwirkungen stammt und RX J0852.0-4622 zur galaktischenkosmischen Strahlung beiträgt.
Shell-type supernova remnants are discussed to be a main source of thegalactic cosmic rays. Very high energy gamma rays (energies between30GeV and 30TeV) from these objects are tracers for the accelerationof particles. Up to now, only a limited number of supernova remnantswere observed in gamma rays. This work reports on the observations of gamma rays from theshell-type supernova remnant RX J0852.0-4622 carried out with the HighEnergy Stereoscopic System (H.E.S.S.) in February 2004. H.E.S.S., asystem of four imaging Cherenkov telescopes, is dedicated to theobservation of gamma rays of energies between 100GeV and several tensof TeV and it is currently the most sensitive instrument in thisenergy range.Emission of gamma rays from RX J0852.0-4622 was detected with asignificance of 12 sigma within a live time of 3.2h. The morphologyof the emission region is clearly extended and correlated with themorphology of the X-ray emission. A differential energy spectrum ofthe photon flux between 0.5 and 10 TeV was reconstructed. It is foundto follow a power law with a spectral index of about 2.1. The integralphoton flux above 1 TeV is at the level of the Crab flux at theseenergies. Thus, RX J0852.0-4622 is one of the brightest gamma-raysources in the sky. RX J0852.0-4622 is the second supernova remnant ofwhich an extended gamma-ray morphology could be proved.The emission of gamma rays from shell-type supernova remnants can beexplained as being produced by accelerated electrons or protons. Theexpected energy flux due to inverse Compton scattering of relativisticelectrons on the cosmic microwave background was estimated and foundto be several orders of magnitude lower than the observed flux. Thus,it is likely that the observed gamma-ray emission is produced inproton interactions and that RX J0852.0-4622 contributes to theacceleration of galactic cosmic rays.
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7

Herrmann, Sven. "A Michelson-Morley test of Lorentz invariance using a rotating optical cavity". Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2008. http://dx.doi.org/10.18452/15751.

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Diese Arbeit präsentiert ein modernes Michelson-Morley Experiment, welches genauere Grenzwerte für Testparameter liefert, die eine Verletzung der Lorentzinvarianz modellieren. Die Messung setzt einen oberen Grenzwert für eine Anisotropie der Lichtgeschwindigkeit im Bereich von dc/c ~10^-16. Das Experiment vergleicht die Frequenzen zweier optischer Hoch-Finesse Resonatoren, wobei einer dieser Resonatoren kontinuierlich auf einem Drehtisch rotiert. Um die Eigenfrequenzen der Resonatoren abzufragen, werden die Frequenzen zweier Nd:YAG-Laser auf die Resonatoren stabilisiert. Die relative Frequenzstabilität auf der Zeitskala einer Tischdrehung (~45s) liegt bei ~1x10^-14, limitiert durch das thermische Rauschen der Resonatorspiegel. Die Messung erstreckt sich über einen Zeitraum von einem Jahr, wobei mehr als 10^5 Tischumdrehungen eingehen. Ausführlich werden die systematischen Effekte und ihre Unterdrückung auf Signalamplituden unter 1 Hz dargestellt. Im Vergleich zu vorhergehenden Messungen konnten diese systematischen Effekte um einen Faktor 10 bis 100 reduziert werden. Zwei verschiedene Testtheorien wurden herangezogen, um ein Signal für eine Anisotropie der Lichtgeschwindigkeit als Folge einer Verletzung der Lorentzinvarianz zu modellieren: eine die Lorentzinvarianz verletzende Erweiterung des Standardmodells und die Testtheorie von Robertson, Mansouri und Sexl. Es wird eine Analyse der Daten im Rahmen beider Testtheorien präsentiert, und Grenzwerte auf die relevanten Parameter werden bestimmt. Diese Grenzwerte schränken eine Anisotropie der Lichtgeschwindigkeit im Bereich von 10^-16 ein, d.h. etwa 10 mal genauer als die Ergebnisse vorangegangener Messungen. Schließlich wird ein Ausblick auf einen verbesserten Aufbau gegeben, welcher neue Resonatoren zum Einsatz bringt, und es werden erste verbesserte Resultate präsentiert. Damit steht der Weg offen für eine Langzeit-Messung, welche die Grenze für eine Anisotropie der Lichtgeschwindigkeit bis in den Bereich von dc/c~10^-17 drücken wird.
This thesis presents a modern Michelson-Morley experiment, which provides improved limits on test parameters that model a violation of Lorentz invariance in electrodynamics. The measurement sets an upper limit on an anisotropy of the speed of light at a level of dc/c~10^-16. The experiment compares the resonance frequencies of two optical high-finesse cavities, one of them continuously rotating on a turntable. To read out their resonance frequencies, two Nd:YAG lasers are frequency-stabilized to these cavities. On the timescale of a turntable rotation (~45s), a relative frequency stability of ~1x10^-14 is achieved, limited by thermal noise of the cavity mirrors. The measurement extends over one year and includes ~10^5 rotations. The systematic effects compromising the measurement are described in detail, together with the measures that have been taken to suppress systematic effects below 1 Hz. This is a reduction by a factor of up to 100 as compared to preceding experiments. Two different test theories are applied to derive a signal for an anisotropy of the speed of light as a consequence of a violation of Lorentz invariance: a Lorentz violating extension of the standard model and the test theory by Robertson, Mansouri and Sexl. An analysis of the data within these two test models is presented, and limits on the relevant test parameters are deduced. These limits restrict an anisotropy of the speed of light at a level of 10^-16, which is a factor of ten more stringent as compared to results of previous such measurements. Finally, an outlook on an improved setup with new cavities and and first results from this setup are presented. This setup should allow for another order of magnitude improvement of the experiment''s sensitivity within a following long-term measurement aiming for the dc/c ~10^-17 level of accuracy.
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8

Willich, Tobias R. "Entwicklung und Evaluation eines Fibrinolyse-Globaltestes "Fibrinolytische Kapazität"". Doctoral thesis, Humboldt-Universität zu Berlin, Medizinische Fakultät - Universitätsklinikum Charité, 2005. http://dx.doi.org/10.18452/15251.

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Es wurde ein zweistufiger, indirekter enzymatischer Assay (Fibrinolytische-Kapazität, FC) in zwei Varianten (basal, aktiviert) vorgestellt, der summarisch Störungen der Fibrinolyse erfasst, da in ihn die Gesamtaktivität der Aktivatoren und Inhibitoren des Plasmas einfließt. In der ersten Stufe wird Plasma Urokinase zugeführt, welche mit Plasminogenaktivatorinhibitoren interagiert. Die noch freie Urokinase aktiviert Plasminogen zu Plasmin. Die plasmatischen Antiplasmine, hauptsächlich alpha 2-Antiplasmin, werden oxidativ mit Taurin-Chloramin inaktiviert. Schließlich wird die resultierende Plasminmenge mit einem chromogenen Substrat quantifiziert. In einer zweiten Variante wird die kontaktphasenabhängige Fibrinolyse vorher sehr potent mit Dextransulfat stimuliert. Zur Validierung wurde der Einfluss von PAI-1, Fibrinogen und Plasminogen untersucht. Störgrößen wie Antioxidantien, parenterale Antikoagulantien, Phenprocoumon, Aprotinin, Tranexamsäure, Thrombozyten und Bilirubin wurden ebenfalls untersucht. Zusätzlich wurde der Test anhand eines Normal-, Thrombose- und Schwangerenkollektives sowie zweier kleiner Kollektive (Schwangere und Patienten unter oraler Antikoagulation) im Zeitverlauf untersucht. Beide FC-Varianten bilden dabei die prothrombotischen Faktoren unterschiedlich ab. In der Regressionsanalyse reagiert die basale FC eher auf Veränderungen der PAI-1- und Plasminogenkonzentrationen, die aktivierte FC eher auf Plasminogen und Thrombose. Thrombose wird durch die aktivierte FC besser als durch die basale FC diagnostiziert (beta-Koeffizienten für Thrombose -0,12 vs. -0,26, Zusammenhangsmaß Eta² von FC und Thrombose 5,6% vs. 9,9%, Entscheidungsgrenze (Cut-Off) für Thrombose 33,0% vs. 66,2% für basale bzw. aktivierte FC). Beide FC-Varianten besitzen ähnliche Sensitivität, Spezifität, prädiktive Werte und relative Risikos für Thrombose bei FC-Werten unterhalb der Entscheidungsgrenze. Die Thromboseerkennbarkeit ist für beide Varianten gleichwertig bei einer Übereinstimmung untereinander von 61,3% (Cohen-Kappa-Koeffizient). Bei der Abklärung einer akuten Thrombose ist dieser Fibrinolyse-Globaltest in der Lage, Ursachen innerhalb des fibrinolytischen Systems zu erkennen.
A two-step indirect enzymatic assay (fibrinolytic capacity, FC) was presented in two variations (basal, activated) detecting the total fibrinolytic disturbances by its ability to assess the entire plasmatic activity of activators and inhibitors. In the first step urokinase is added to plasma, which interacts with plasminogen-activator-inhibitors. The remaining urokinase activated plasminogen to plasmin. The plasmatic antiplasmines, mainly alpha 2-antiplasmine were oxidative inhibited with taurine-chloramine. Finally the resulting amount of plasmin was quantified using a chromogenic substrate. In a second variation the contact-phase fibrinolysis was highly stimulated with dextran-sulfate. The influence of PAI-1, fibrinogen and plasminogen were analysed including disturbing substances such as antioxidants, parenteral anticoagulants, phenprocoumon, aprotinine, tranexamic acid, platelets and bilirubine. In addition, validation was performed including healthy individuals, patients with thrombosis and pregnant women and two small cohorts (pregnant women and patients under oral anticoagulation) over time. The prothrombotic factors were differently represented by the two FC-variations. In the regression analysis the basal FC reacted predominantly to alterations in the concentration of PAI-1 and plasminogen. In contrast the activated FC was more likely affected by plasminogen and thrombosis. The activated FC was more sensitive in the detection of thrombosis than the basal FC (with a beta-coefficient for thrombosis -0,12 vs. -0,26, a coefficient of strength of association eta² from FC with thrombosis 5,6% vs. 9,9% and a cut-off for thrombosis 33,0% vs. 66,2% for basal and activated FC respectively). Below these cut-offs both FC-variations had equal sensitivity, specificity, predictive values and relative risks in the detection of thrombosis by FC-values. The ability to detect thrombosis were equally with a correspondence of 61,3% (Cohen-Kappa-coefficient). This fibrinolytic global-test is able to identify the underlying cause within the fibrinolytic system for the a clarification of acute thrombosis.
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9

Ritter, Zully Maritza. "On the influence of mechanical conditions on osteochondral healing". Doctoral thesis, Humboldt-Universität zu Berlin, Medizinische Fakultät - Universitätsklinikum Charité, 2006. http://dx.doi.org/10.18452/15451.

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Im Rahmen der Biomechanik werden der Einfluss mechanischer Bedingungen auf die Heilung biologische Gewebe, wie zum Beispiel Knochen und Knorpeln untersucht. Die vorliegende Arbeit bestimmte zum Einen am Beispiel des Humerus das mechanische Verhalten von intakten und frakturierten Knochen mit verschiedener Knochenqualität (Osteoporose versus gesunden Knochen) unter verschiedenen physiologischen Belastungen. Dazu wurde ein Finite Elemente Modell des entsprechenden Knochens erstellt. Die Knochenqualität erwies sich für die Heilung als wichtigerer Parameter, als die jeweilige physiologische Belastung. Künftige Therapien der Osteoporose sollten daher die jeweils individuelle Dichteverteilung des entsprechenden Knochens explizit berücksichtigen. Zum zweiten wurde ein biphasisches, linear-elastisches Gewebedifferenzierungsmodell entwickelt, mit dem durch iterative Berechnung der Elastizität die Heilung eines osteochondralen Defektes verfolgt werden konnte. Damit konnten die Steifigkeiten und die Orte im und um den ursprünglichen Defekt, an denen sich während der osteochondralen Heilung die verschiedenen Gewebearten neu bilden, quantitativ und qualitativ (Vergleich mit Tierexperimentation) ermittelt werden. Der Erfolg dieses Modells erlaubte die Antwort auf verschiedene Fragestellungen: Einfluß der Defekt- und Gelenkgeometrie auf die Häufigkeit des Auftretens osteochondraler Defekte und ihre Heilungschancen, sowie die Wahl der Steifigkeit eines optimalen Biomaterials zur Defektausfüllung. Osteochondrale Defekte scheinen in konkaver Geometrie etwas besser zu heilen, weil dort mehr hyaliner Knorpel gebildet wird. Grafts mit derselben Steifigkeit des ursprünglichen Knochens bilden kalzifizierenden Knorpel um mehr hyaliner Knorpel am Ende des Heilungsprozesses und sind daher weicheren Biomaterialien vorzuziehen.
In biomecanics the influence of mechanical conditions on healing of biological tissues as bones or soft tissues are analysed. In the frame of this work the mechanical behavior of intact and fractured bones with different bone qualities (osteoporotic versus normal) has been examined in a proximal humerus. Therefore a finite element model of the bone was constructed. It was found that the bone quality has a stronger impact on healing than the actual physiological loading condition does. Hence, for a future therapy of osteoporosis the precise density distribution of each individual bone must be considered. In a second step a biphasic, linear-elastic model for tissue differentiation was developed, where osteochondral healing was simulated by iterative calculation of the elastic modulus of Young within the joint region. By using this model it was possible to predict in which order in all regions of the joint the osteochondral healing took place. The stiffnesses of the newly differentiated tissues agreed well to the derived quantities of animal experimentation. Hence, this tissue differentiation model could be used to analyse some questions concerning the geometry and healing success of osteochondral defects. In concave geometry more hyaline cartilage was formed, which has better mechanical properties than fibrous one. Moreover, the stiffness of an optimal biomaterial could be determined: grafts with the same stiffness as the original bone will lead to the formation of calcified bone and more hyaline cartilage, which is favourable compared to a less stiffer biomaterial.
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10

Mähnert, Pia. "Kinetik der Biogasproduktion aus nachwachsenden Rohstoffen und Gülle". Doctoral thesis, Humboldt-Universität zu Berlin, Landwirtschaftlich-Gärtnerische Fakultät, 2007. http://dx.doi.org/10.18452/15651.

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Die anaerobe Vergärung von nachwachsenden Rohstoffen und Gülle zur Biogasproduktion als regenerative Energiequelle erfährt seit einigen Jahren einen erheblichen Boom. Dabei werden in Deutschland in der Regel Nassvergärungs-Biogasanlagen betrieben, in denen kontinuierlich Energiepflanzen und Rinder- oder Schweinegülle gemeinsam eingesetzt werden (Kovergärung). Aber auch die alleinige Nassvergärung von Energiepflanzen ohne Gülle (Monovergärung) ist möglich. Häufig fehlen jedoch belastbare Daten zur Auslegung der Biogasanlage und für die Früherkennung kritischer Belastungszustände. Im vorliegenden Projekt sollen Kenntnisse über die Kinetik der Biogasbildung aus nachwachsenden Rohstoffen in Laborversuchen unter praxisrelevanten Prozessbedingungen gewonnen werden. Über diskontinuierliche Batch-Gärtests lassen sich Biogas- und Methanausbeuten unterschiedlicher Substrate auf einfache Weise ermitteln. Bei einheitlichen Laborbedingungen ist damit eine gute Vergleichbarkeit gegeben. Kontinuierliche Belastungssteigerungsversuche sind hingegen nur als Langzeitversuche möglich. Sie geben jedoch zusätzlich Auskunft über den Einfluß der täglichen Belastung des Biogasreaktors mit organischer Substanz und erlauben mit Einschränkungen Aussagen über die optimale Betriebsweise. Die Versuche wurden mit Mais, Rüben und Roggen in Form von Silage als Mono- und Kosubstrat in der Mischung mit Rinder- und Schweinegülle bei meso- und thermophilen Temperaturstufen durchgeführt. Die Versuchsergebnisse konnten ein neu hergeleitetes kinetisches Modell weitgehend bestätigen, das den Zusammenhang zwischen Biogasausbeute und Raumbelastung in Abhängigkeit von den substrat- und prozessspezifischen Parametern wie maximal mögliche Biogasausbeute, Zulaufkonzentration, Dichte des Biogases und des Ablaufes sowie Reaktionsgeschwindigkeitskonstante aufzeigt. Dies kann damit Betreibern von Biogasanlagen als Richtlinie für eine stabile Prozessführung mit hoher energetischer Effizienz dienen.
Anaerobic digestion of energy crops for biogas production has attracted much interest in recent years. In Germany, the most common process is the continuous wet-fermentation of energy crops with cattle slurry or pig slurry (co-digestion). But also the digestion of energy crops as single substrate without slurry (mono-digestion) becomes more important. Because of the great diversity of substrates and the danger of an overload of the reactor at the digestion of high-energetic substrates, sufficient experience for energy crops is still missing. This project should investigate the kinetics of biogas production from energy crops in lab-scale experiments. Biogas and methane yield of different substrates can be estimated easily by discontinuous batch-experiments. These experiments allow a good comparability in case of equal conditions. On the other hand, the influence of the reactor performance and the optimal operational mode can be identified only by continuous long-term experiments with loading increase. Therefore, long-term lab-scale experiments were conducted with maize silage, whole-crop rye silage and fodder beet silage as mono-substrate and co-substrate in a mixture with both cattle slurry and pig slurry under mesophilic and thermophilic conditions. For calculation of biogas yield as function of the organic loading rate, a hyperbolic equation was developed on base of a first order reaction rate for substrate degradation. The biogas yield also depends on the corresponding maximum biogas yield, the concentration of volatile solids of the input, the density of the effluent, the density of the biogas and the reaction rate constant which are all substrate- and process-specific. The results of the experiments approve this model and allow an estimation of the parameters. This is helpful as a guideline for a stable and efficient biogas process.
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Livros sobre o assunto "15B51"

1

Wagner, Rafael. Schwertträger und Gotteskrieger: Untersuchungen zur frühmittelalterlichen Kriegergesellschaft Alemanniens. Zürich: Chronos Verlag, 2019.

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2

de Kroon, Marijn, e Willem van ’t Spijker. Martin Bucer (1491–1551). Editado por Christa Boerke e J. C. Klok. Göttingen: Vandenhoeck & Ruprecht, 2018. http://dx.doi.org/10.13109/9783666552724.

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Muzio, Girolamo. Lettere: Venezia, Giolito, 1551. Alessandria: Edizioni dell'Orso, 2000.

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Muzio, Girolamo. Lettere: Venezia, Giolito, 1551. Alessandria: Edizioni dell'Orso, 2000.

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5

Ennio, Stipčević, ed. Tirena 1551: Faksimilni pretisk. Zagreb: Školska knjiga, 2008.

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Gasca, Pedro de la. Descripción del Perú (1551-1553). Cuzco, Perú: Centro de Estudios Regionales Andinos Bartolomé de las Casas, 1998.

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7

Holger, Pils, Ruderer Stephan, Schaffrodt Petra e Seebass Gottfried 1945-, eds. Martin Bucer (1491-1551): Bibliographie. Gütersloh: Gütersloher Verlagshaus, 2005.

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8

Beltramini, Manuela. Il catapan di Codroipo (1551). Udine: Istituto Pio Paschini, 2007.

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9

Holger, Pils, Ruderer Stephan, Schaffrodt Petra e Seebass Gottfried 1945-, eds. Martin Bucer (1491-1551): Bibliographie. Gütersloh: Gütersloher Verlagshaus, 2005.

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10

Hochleitner, Janusz. Religijność potrydencka w Warmii (1551-1655). Olsztyn: Wydawn. Uniwersytetu Warmińsko-Mazurskiego, 2000.

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Capítulos de livros sobre o assunto "15B51"

1

Loomba, Ania, e Jonathan Burton. "William Camden (1551–1623)". In Race in Early Modern England, 183. New York: Palgrave Macmillan US, 2007. http://dx.doi.org/10.1057/9780230607330_66.

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2

van ’t Spijker, Willem. "Die Lehre vom Heiligen Geist bei Bucer und Calvin". In Martin Bucer (1491–1551), 107–42. Göttingen: Vandenhoeck & Ruprecht, 2018. http://dx.doi.org/10.13109/9783666552724.107.

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van ’t Spijker, Willem. "Bucer und Calvin". In Martin Bucer (1491–1551), 143–54. Göttingen: Vandenhoeck & Ruprecht, 2018. http://dx.doi.org/10.13109/9783666552724.143.

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van ’t Spijker, Willem. "Bucer’s influence on Calvin: church and community". In Martin Bucer (1491–1551), 155–68. Göttingen: Vandenhoeck & Ruprecht, 2018. http://dx.doi.org/10.13109/9783666552724.155.

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de Kroon, Marijn. "Bucer und Calvin. Das Obrigkeitsverständnis beider Reformatoren nach ihrer Auslegung von Römer 13". In Martin Bucer (1491–1551), 169–82. Göttingen: Vandenhoeck & Ruprecht, 2018. http://dx.doi.org/10.13109/9783666552724.169.

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van ’t Spijker, Willem. "Bucer als Zeuge Zanchis im Straßburger Prädestinationsstreit". In Martin Bucer (1491–1551), 185–202. Göttingen: Vandenhoeck & Ruprecht, 2018. http://dx.doi.org/10.13109/9783666552724.185.

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de Kroon, Marijn. "Bucerus interpres Augustini". In Martin Bucer (1491–1551), 19–36. Göttingen: Vandenhoeck & Ruprecht, 2018. http://dx.doi.org/10.13109/9783666552724.19.

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van ’t Spijker, Willem. "Ruard Tappers Auseinandersetzung mit zentralen Themen der Theologie Bucers. Vorlesungen an der Universität Löwen, 1545". In Martin Bucer (1491–1551), 203–18. Göttingen: Vandenhoeck & Ruprecht, 2018. http://dx.doi.org/10.13109/9783666552724.203.

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van ’t Spijker, Willem. "‘You have a different spirit from us’ Luther to Bucer in Marburg, Sunday 3 October 1529". In Martin Bucer (1491–1551), 219–40. Göttingen: Vandenhoeck & Ruprecht, 2018. http://dx.doi.org/10.13109/9783666552724.219.

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de Kroon, Marijn. "The Conflict between Bucer and Konrad Braun. Regarding the Use of Church Property and the Position of the Layman in religious Talks". In Martin Bucer (1491–1551), 241–60. Göttingen: Vandenhoeck & Ruprecht, 2018. http://dx.doi.org/10.13109/9783666552724.241.

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Trabalhos de conferências sobre o assunto "15B51"

1

"Back Matter for Volume 1551". In PROCESSES IN ISOTOPES AND MOLECULES (PIM 2013). AIP Publishing LLC, 2013. http://dx.doi.org/10.1063/v1551.backmatter.

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"Front Matter for Volume 1551". In PROCESSES IN ISOTOPES AND MOLECULES (PIM 2013). AIP Publishing LLC, 2013. http://dx.doi.org/10.1063/v1551.frontmatter.

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Yan, Wei, Jun Qin, Longjiang Deng e Lei Bi. "Waveguide integrated nonreciprocal optical routers for silicon photonics". In CLEO: Applications and Technology. Washington, D.C.: Optica Publishing Group, 2022. http://dx.doi.org/10.1364/cleo_at.2022.jw3b.17.

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We report a silicon integrated 5×5 nonreciprocal optical router based on the magneto-optical nonreciprocal phase shift effect. The device shows an asymmetric scattering matrix, with 16 dB isolation ratio and -22 dB crosstalk measured at 1551 nm wavelength.
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4

"Influence of Polyol on the Drying and Curling of Self-Leveling Screeds Based on Calcium Sulfoaluminate Cement". In SP-234: Seventh CANMET/ACI International Conference on Durability of Concrete. American Concrete Institute, 2006. http://dx.doi.org/10.14359/15951.

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Pinto Brandalise, Mariane, Martín Mizgier, Marcia Barbosa Henriques Mantelli, Luis H. R. Cisterna e Luciano Fuso. "Avaliação de parâmetros para o desenvolvimento do termossifão bifásico aplicado na cobertura como estratégia passiva de resfriamento". In XIX ENCONTRO NACIONAL DE TECNOLOGIA DO AMBIENTE CONSTRUÍDO. UFRGS, 2022. http://dx.doi.org/10.46421/entac.v19i1.1995.

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O objetivo desse artigo é definir temperatura do ar interno e externo para o desenvolvimento de um termossifão bifásico implementado na cobertura para resfriamento passivo. Para isso, realizou-se um experimento com um protótipo em pequena escala e dois parâmetros foram variados: temperatura de resfriamento do banho termostático e potência. Nos resultados observa-se que o gradiente de temperatura entre a seção evaporada e condensadora é fundamental para o desenvolvimento do sistema. Desta forma, o teste com potência de 25W e temperatura do banho termostático de 16°C, o qual apresenta o maior gradiente de temperatura (15,51°C), demonstrou o melhor desempenho térmico.
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Chung, Ivy, Courtney Barrows, Arianne Wilson, Nathan Rummel, Shaikh Badaruddin, Atsushi Mizokami, Jackie Banyard e Bruce Zetter. "Abstract 1551: Benzimidazole as novel therapeutic agent for metastatic prostate cancer". In Proceedings: AACR 101st Annual Meeting 2010‐‐ Apr 17‐21, 2010; Washington, DC. American Association for Cancer Research, 2010. http://dx.doi.org/10.1158/1538-7445.am10-1551.

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Yu, Ching-Fang, Christopher W. Woo, Shao-Hua Lo, Chia-Yi Yen, Ji-Hong Hong e Chi-Shiun Chiang. "Abstract 1551: Irradiation enhances tumor-homing ability of monocytes as cellular carrier." In Proceedings: AACR 104th Annual Meeting 2013; Apr 6-10, 2013; Washington, DC. American Association for Cancer Research, 2013. http://dx.doi.org/10.1158/1538-7445.am2013-1551.

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Reeves-Hall, P. C., e J. R. Taylor. "Wavelength tunable CW Raman fiber ring laser operating at 1486-1551 nm". In CLEO 2001. Technical Digest. Summaries of papers presented at the Conference on Lasers and Electro-Optics. Postconference Technical Digest. IEEE, 2001. http://dx.doi.org/10.1109/cleo.2001.947623.

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Ahn, Young Ju. "Shakedown Response to Periodic Loading With Coulomb Friction". In ASME/STLE 2009 International Joint Tribology Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/ijtc2009-15051.

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Coupled systems with frictional interface subjected to periodic loading may lead to either shakedown or cyclic slip depending on the initial condition. In this paper, we explore the phenomena in the context of the simplest coupled system involving two contact nodes, and findings show the possibility that a reduced form of Melan’s theorem might apply to such systems under suitable restrictions on the loading factor.
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Xiao, Jianjun, Anatoly Svishchev e Thomas Jordan. "Development and Validation of Two-Way Fluid-Particle Coupling in Turbulent Flows for a CFD Code". In 2013 21st International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icone21-15051.

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A Lagrangian approach was used in CFD code GASFLOW to describe particle dispersion in turbulent flows. One-way coupling between fluid and particle is often used due to its simplicity of implementation. However, in case of higher particle volume fraction or mass loading in the continuous phase, one-way coupling is not sufficient to simulate the interaction between fluid and particles. For instance, the liquid droplets released by a spray nozzle in the nuclear power plant will lead to a strong gas entrainment, and consequently impact the gas flow field. When the volume fraction of the discrete phase is not negligible compared to the continuous phase, the interaction between the continuous fluid and dispersed phase becomes significant. Two-way momentum coupling between fluid and solid particles was developed in CFD code GASFLOW. The dynamics of the discrete particles was solved by an implicit algorithm to ensure the numerical stability. The contribution of all particles to a fluid cell was treated as the source term to the continuous phase which was solved with Arbitrary-Lagrangian-Eulerian (ALE) methodology. In order to verify and validate the code, the calculation results were then compared to theoretical results, predictions of other CFD codes and experimental data. Predictions compared favorably with the experimental data. It indicates that the effect of two-way coupling is significant when the volume fraction of discrete phase is not negligible. Two-way coupling of mass, energy and turbulence will be implemented in the future development of the GASFLOW code.
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Relatórios de organizações sobre o assunto "15B51"

1

Lavietes, A., e N. Kalkhoran. A Compact, Portable, Reduced-Cost, Gamma Ray Spectroscopic System for Nuclear Verification Final Report CRADA No. TSB-1551-98. Office of Scientific and Technical Information (OSTI), outubro de 2017. http://dx.doi.org/10.2172/1406414.

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Lavietes, A. A Compact, Portable, Reduced-Cost, Gamma Ray Spectroscopic System for Nuclear Verification Final Report CRADA No. TSB-1551-98. Office of Scientific and Technical Information (OSTI), julho de 2001. http://dx.doi.org/10.2172/790146.

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Health hazard evaluation report: HETA-85-002-1551, Salomon Brothers, New York, New York. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, janeiro de 1985. http://dx.doi.org/10.26616/nioshheta850021551.

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