Academic literature on the topic 'Carmen de pascha'
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Journal articles on the topic "Carmen de pascha"
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Krynicka, Tatiana. "Starotestamentalne cuda w poemacie "Paschale carmen" Seduliusza." Vox Patrum 62 (September 4, 2014): 331–56. http://dx.doi.org/10.31743/vp.3589.
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Before turning to the wonderful Saviour’s deeds, that he strives to praise in Paschale Carmen, Sedulius introduces his reader into the old testamental history of salvation. In the Book 1, which fulfils the functions of a preface to the poem, he recounts 18 miracles that took place before Christ was born, since the ages of the Patriarchs to the period of the Babylonian captivity. These relations appear to be separate, self-contained stories. The longest is devoted to the miraculous fate of the prophet Elijah (lines 170-187); in the shortest the poet tells about the Balaam’s donkey, an animal without speech, who spoke to its master with a human voice (lines 160-162). Miracles fascinate Sedulius as extraordinary events, which deny the laws of nature and contradict common sense. At that they are sometimes connected with a marvelous metamorphosis. God performs miracles in order to show to the mankind His might, providence and kindness; to educate human beings and to prepare them for the coming of Christ; to foretell cosmic redemption at the end of times. Telling about the old testamental miracles Sedulius tends to refer both to the unbelievers and to the believers the revealed truth. He also aims to awake in the readers’ hearts wonderment, gratitude, love and trust towards the Holy Trinity.
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Pokrywka, Władysław. "Metryka w „Paschale carmen" Seduliusza (na przykładzie księgi II)." Vox Patrum 36 (December 15, 1999): 407–13. http://dx.doi.org/10.31743/vp.7841.
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Caelius Sedulius, qui saeculo quinto post Christum natum vitam degebat, et metris et arte versificandi poetas antiquos, praecipue vero Publium Vergilium Maronem in opere suo Carmen paschale quod inscribitur imitabatur.
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Sharpe, Richard. "An Irish Textual Critic and the Carmen paschale of Sedulius: Colmán's Letter to Feradach." Journal of Medieval Latin 02 (January 1992): 44–54. http://dx.doi.org/10.1484/j.jml.2.303971.
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De Gianni, Donato. "A Note on the Nachleben of Sedulius carm. pasch. 5.215-16." Vigiliae Christianae 71, no. 2 (2017): 168–74. http://dx.doi.org/10.1163/15700720-12341288.
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The article takes a closer look at the simile of the goat and the vine in Sedulius’ Carmen paschale 5.215-16, an allegory representing the robber who harasses Christ on the cross with his insults. The verse is imitated by the Medieval theologian Honorius Augustodunensis (12th c.) in the prologue of his cosmological treatise De imagine mundi, where it is directed, in an allusive way, against the detractors of that work. This imitation, until now not recognised by scholars, offers a new insight into the fortune of Sedulius’ work in the Middle Ages. L’article approfondit la similitude du bouc et de la vigne utilisée par Sedulius aux vv. 215-16 du cinquième livre du Carmen Paschale pour représenter allégoriquement le voleur qui harcèle avec ses offenses le Christ crucifié. Le locus poétique est imité par le théologien médiéval Honorius Augustodunensis (xiie siècle) dans le prologue du traité cosmologique De imagine mundi avec une claire intention allusive aux détracteurs de l’oeuvre. Une telle imitation, jusqu’alors jamais relevé par les savants, offre une nouvelle contribution à la fortune du poète chrétien à l’époque médiévale. This article is in English.
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Rusdiana, Omo, and Syidik Fahmi. "Potensi Simpanan Karbon pada Tegakan Revegetasi Lahan Pasca Tambang PT Holcim Indonesia Tbk." Journal of Tropical Silviculture 11, no. 2 (2020): 89–95. http://dx.doi.org/10.29244/j-siltrop.11.2.89-95.
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Global warming is a gradual increase in the average temperature of the Earth’s atmosphere caused by the increased volumes of greenhouse gases such as carbon dioxide, methane, and nitrous oxide. Greenhouse gases is trapped inside the atmosphere and caused UV radiation difficulty passing through Earth’s atmosphere, a processed is often referred to as the greenhouse effect. Reclamation and revegetation activities were expected could decrease the greenhouse effect. The aims of the research is to estimate total carbon stock in Pine Forest age 2005 or 11 years and 2012 or 4 years, and also to compare the result with former research in post mining revegetation site PT Holcim Indonesia Tbk. Biomass measurement of trees, poles, and saplings is conducted with non-destructive methods meanwhile biomass measurements of understorey, litter, and necromassa used destructive methods. The result showed that the value of biomass and carbon stock on the 2005 pine stand is acquired 75.31 tons/ha and 35.39 tons/ha. The value of the biomass and carbon stock on the 2012 pine stand is acquired 12.72 tons/ha and 5.98 ton/ha or increased from the previous year's measurement. Increasing of biomass content and carbon stocks is caused several factors such as increasing of diameter increment dan site quality.
Keywords: biomass, carbon, reclamation
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Coxon, Bruce. "Two-dimensional POMMIE carbon–proton chemical shift correlated 13C NMR spectrum editing." Canadian Journal of Chemistry 68, no. 7 (1990): 1145–50. http://dx.doi.org/10.1139/v90-177.
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Two pulse sequences are described for acquisition of two-dimensional, carbon–proton chemical shift correlated 13C NMR spectra by the "phase oscillations to maximize editing technique". One of these sequences provides two-dimensional, carbon–proton chemical shift correlated spectra in which the 1H–1H coupling constants are present in the 1H chemical shift dimension, whereas the other sequence includes a bilinear rotation decoupling unit that removes the vicinal 1H–1H couplings in this dimension. Extensions of these techniques to generation of two-dimensional, carbon–proton chemical shift correlated CH, CH2, and CH313C NMR subspectra from linear combinations of three two-dimensional data sets are described. Decreased residual signals in the edited 2D subspectra have been achieved by Pascal programs that include six floating point coefficients, and a method for their calibration is discussed. Results are reported for troleandomycin (1). Keywords: 13C nuclear magnetic resonance, carbon–proton chemical shift correlation, DEPT, Pascal programs, POMMIE, two-dimensional NMR spectrum editing, troleandomycin.
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Yuhadi, Irfan, and Nurul Budi Murtini. "LIVING HADIS: FENOMENA SARAPAN BERSAMA PASCA PENGAJIAN AHAD PAGI MASYARAKAT BANGAH SIDOARJO." Al-Majaalis : Jurnal Dirasat Islamiyah 7, no. 1 (2019): 117–58. http://dx.doi.org/10.37397/almajaalis.v7i1.124.
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The word “sarapan” (breakfast) comes from the word “sarap” which is added a suffix “an.” The word “sarap” is a verb which means eating something in the morning. Breakfast is food that is eaten in the morning before doing activities and it is eaten approximately one third of the food in a day. Breakfast gives a lot of benefits for the health of our body. It will be more enjoyable if it is done together. Bangah is a village located in the Gedangan district in Sidoarjo, East Java. The formulations of the problem in this research are about: (1) the concept of procuring breakfast together after Sunday morning recitation, (2) the benefits of having brakfast togehter after Sunday morning recitation, (3) the hadiths that recommend to feed others and eat together. The research in this study uses qualitative research with the study of living hadith as its research model.The results of this study indicate that: (1) the concept of procuring breakfast together after Sunday morning recitation starts from the desire to apply knowledge about the virtues and a great reward for those who feed the prosecutors of knowledge.The source for funding the activities are from the donations of the worshipers and the donors of the mosque, (2) the activity of having breakfast together after Sunday morning recitation brings a lot of positive benefits personally and socially, (3) there are hadits that recommend to feed other people and eat together.
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Rianawati, Fonny, Zainal Abidin, and Muhammad Naparin. "KAJIAN KARAKTERISTIK BRIKET DARI PENCAMPURAN JERAMI DAN SEKAM PADI DARI LIMBAH PASCA PANEN DI LAHAN GAMBUT." Jurnal Hutan Tropis 9, no. 1 (2021): 23. http://dx.doi.org/10.20527/jht.v9i1.10465.
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This study aims to study the characteristics of briquettes from rice straw and rice husks in the form of moisture content, density, ash content, flight substance content, and heating value with different mixing variations in an effort to overcome the occurrence of deep forest / land fires to control forest or land fires in wetland areas by innovating and utilizing technology of straw and rice husks from post-harvest waste. The test results showed, the characteristic values are not much different for each mixing variation and are still below the Indonesian National Standard (SNI) No. 1-6235-2000, namely The heating value ranges from 2729.33 - 3492.14 cal/g (SNI ≥ 5000 cal/g), bonded carbon content ranges from 2.3524 -12.5870% (SNI ≥ 77%), ash content ranges from 27.3367 -29.8367% (SNI ≤ 8%) and the moisture content ranges from 18.2130 -28.8903% (SNI ≤ 8%). This is presumably due to the large content of the adhesive used, the pressing and drying processes that cause high water content, because high water content will cause a low calorific value. Low heating value will cause a large amount of ash content which causes a low value of bound carbon. However, overall charcoal briquettes from rice husks and rice straw can be applied to the community as a technological innovation that can be used in the use of post-harvest waste in an effort to control forest and land fires with land processing without burning.
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Gärtner, Thomas. "Die Musen Im Dienste Christi: Strategien Der Rechtfertigung Christlicher Dichtung in Der Lateinischen Spätantike." Vigiliae Christianae 58, no. 4 (2004): 424–46. http://dx.doi.org/10.1163/1570072042596228.
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AbstractThe present article examines the arguments by which early Christian poets in Late Antiquity justify their attempt to combine Christian content and pagan poetical form. It focuses on the poetologically significant parts of their works, especially the proems. Whereas the earliest poets, i.e.Proba, Prudentius and Orientius, justify Christian poetry by its effects on the poet's personality and in the context of the poet's life, Juvencus prefigures another type of argument which is fully developed in Sedulius' Carmen paschale, according to which Christian poetry is justified by its material and formal qualities. This new type of argument has enormous reception in the Middle Ages and is especially adapted by Hrotsvith of Gandersheim who combines content and form as two coordinates of a more differentiated system.
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Diab, F., W. H. Gaber, M. E. Abdel-kader, B. A. Soliman, and M. A. Abd Al-Halim. "Influence of cathode material type on the electrical breakdown behaviors of DC discharge." Canadian Journal of Physics 98, no. 8 (2020): 726–31. http://dx.doi.org/10.1139/cjp-2019-0547.
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Paschen curves were studied using different cathode materials such as magnesium, zinc, and carbon graphite by discharge in argon gas of a pressure range between 0.08 and 3 Torr using a parallel plates configuration. The first and second Townsend coefficients (α and γ, respectively) and the ionization efficiency (η) of different cathode materials were deduced from Paschen curves as a function of the reduced field (E/P). The minimum breakdown voltage was found to be about 242 V for Mg material, which has the lowest work function, while carbon graphite has a higher breakdown voltage of 283 V due to its higher work function. The second coefficient γ was increased as a function of E/P and has higher values for materials of lower work functions, and a similar trend of γ is obtained as a function of the ion mean energy. On the other hand, the first coefficient α has a reverse behavior with both E/P and the work function of the cathode materials compared with the second coefficient. The ionization efficiency of the three cathode materials is identical, as η depends only on the gas properties and not the cathode material. η has a maximum value of about 0.025 V−1 for an E/P of about 185 Vcm−1Torr−1, corresponding to the maximum ionizing ability of electrons. The validation of the breakdown results has been confirmed by conferring with other published experimental measurements.
Dissertations / Theses on the topic "Carmen de pascha"
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Norris, Oliver William. "The Gospel text used by Sedulius in the Paschale Carmen and Paschale Opus." Thesis, King's College London (University of London), 2016. https://kclpure.kcl.ac.uk/portal/en/theses/the-gospel-text-uised-by-sedulius-in-the-paschale-carmen-and-paschale-opus(6dbfcca1-b380-476a-bf6a-186aac563a79).html.
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This study examines the Gospel citations in the Paschale Opus and the Paschale Carmen, the twin works of the 5th-century Latin poet Sedulius. To date no study had conducted a full investigation of the origin and use of Sedulius's Gospel sources in both works, composed in the middle of a crucial period in the evolution of the Latin Bible. Sedulius's biblical citations were broken up into variant sites that were analysed against the principal traditions in the Old Latin and Vulgate versions of the Gospels. The full collection of these variant sites can be found in the Appendix. The analysis of these variant readings proposes that Sedulius's Gospel citations in both works are principally Old Latin, closest among unmixed Old Latin codices to the Veronensis (VL4) in Matthew, the Corbiensis II (VL8) in Luke and the Usserianus I in John (VL14), but his citations also reveal that Sedulius made significant use of the Vulgate, especially in book two of the Paschale Opus. Sedulius's biblical text reveals his use of homilies and the importance of the liturgy on the composition of his works but his biblical citations are nearly always paralleled by an Old Latin or Vulgate manuscript witness rather than those forms found in the earliest witnesses to the liturgy. Finally, the study's findings have important consequences for our knowledge concerning the use and dissemination of what came to be known as the Vulgate version of the Gospels.
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Blümmel, Pascal [Verfasser]. "Functionalization of Carbon Nanotubes with Molecular Switches / Pascal Blümmel." Berlin : Freie Universität Berlin, 2013. http://d-nb.info/1043197958/34.
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Bodmer, Pascal [Verfasser]. "Linking Carbon Dynamics in Stream Ecosystems to Dissolved Organic Matter Quality / Pascal Bodmer." Berlin : Freie Universität Berlin, 2016. http://d-nb.info/1097263495/34.
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Martínez, Ana Carolina Rodríguez. "Hydrogeomorphic classification of mire ecosystems within the Baker and Pascua Basins in the Region Aysén, Chilean Patagonia." Doctoral thesis, Humboldt-Universität zu Berlin, Lebenswissenschaftliche Fakultät, 2015. http://dx.doi.org/10.18452/17314.
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Zehn unerforschte und natürliche Moore entlang der Flüsse Baker und Pascua in der Region Aysén, im chilenischen Patagonien, wurde untersucht, um Informationen über ihre Entstehung, Hydrologie, Geomorphologie, Stratigraphie, Ökologie und Wasser- und Kohlenstoffspeichervermögen zu gewinnen. Es wurden acht verschiedene ökologische Moortypen identifiziert und fünf Moortypen unterscheidbar durch ihr geohydromorphologisches Setting mit insgesamt elf verschiedenen organischen Moorsubstraten. Die gesammelten Information erlauben erste Abschätzungen der Torf-, Süßwasser- und Kohlenstoffmengen, die in den Mooren Ayséns gespeichert sind, sowie der jährlichen Torfakkumulationsraten. Die Moortypen und die in ihnen vorkommenden organischen Substrate wurden in einem geohydromorphologischen Klassifizierungssystem zusammengefasst, welches wichtige hydrologische, geomorphologische, ökologische, bodenkundliche und landschaftliche Parameter integriert. Forschung und Kommunikation über die chilenischen Moore sollen durch diese Arbeit unterstützt werden, um angemessene Monitoring Tools und partizipative Naturschutzstrategien zu entwickeln, die für die Erhaltung dieser Ökosysteme und ihrer Kreisläufe anwendbar sind.Ten unexplored and pristine mires along the Baker and Pascua River Basins in Aysén, Chilean Patagonia, were examined, generating information about their origin, hydrology, geomorphology, stratigraphy, ecology, and carbon and water storage capacities. Eight mire types ecologically differentiable, associated with five main mire types separable by their hydrology and geomorphology were detected, as well as eleven organic substrate types forming mire soils. The information gathered allows for a first estimation of the peat, fresh water and carbon content stored in the mires of Aysén, as well as for an average growth and annual accumulation rate of the peat. Mire types and their associated substrates are systematized in a hydrogeomorphic classification system, integrating important landscape, hydrological, geomorphical, ecological and pedological components. Research and communication about mires in the Chilean Patagonia should be further supported to generate accurate monitoring tools and participative conservation strategies that are replicable for the preservation of these ecosystems and its balance.
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Silva, Rita de Cassia da. "\"Preparação e aplicação de eletrodos de pasta de carbono modificados com ditiocarbamatos para análise de fármacos\"." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/75/75132/tde-12042007-100734/.
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O morfolinoditiocarbamato (Mor); o piperidinoditiocarbamato (Pip) e o pirrolidinoditiocarbamato (Pyr) de rutênio derivados respectivamente da morfolina, piperidina e pirrolidina, três aminas alifáticas cíclicas foram preparados e caracterizados por análise elementar, espectroscopia vibracional na região do infravermelho, espectrometria de massa e análise térmica (termogravimetria TG e análise térmica diferencial DTA). A análise elementar mostrou que os compostos de fórmula geral Ru2DTC5.XH2O foram obtidos (DTC = Mor, Pip e Pyr e X = 4, 1,5 e 2 respectivamente); assim como a IV revelou que os complexos são monodentados, com duas bandas de absorção em torno de 1000 cm-1. A espectrometria de massas mostrou as estruturas moleculares e a estabilidade dos complexos, pois requerem alta energia de colisão para fragmentarem-se; alguns fragmentos puderam ser identificados. A análise térmica mostrou que após desidratação os DTC decompõem-se gerando sulfato e óxido de rutênio (III), dependendo da temperatura. Após caracterização, os complexos foram usados com modificadores na preparação de eletrodos de pasta de carbono modificados e seu desempenho avaliado por voltametria cíclica em diferentes meios e intervalos de potencial e em diferentes composições do material do eletrodo. Com base na melhor definição dos picos referentes aos processos anódicos e catódicos, assim como pela menor corrente residual, optou-se em usar como modificador o Ru2Pip5.1,5H2O, na proporção de 10% (m/m) na pasta. Eletrodos preparados com este modificador foram usados na determinação voltamétrica de carbamazepina (CBZ), usando CV. Na presença do analito a corrente do modificador aumenta proporcionalmente à concentração de CBZ no intervalo de 1,30 x 10-8 e 6,62 x 10-6 mol L-1, com limite de detecção de 3,18 x 10-7 mol L-1. O método foi aplicado na determinação de CBZ em urina sintética, usando procedimento de adição de padrão com recuperação da ordem de 97 104% e concordância com o método espectrofotométrico recomendado pela farmacopéia brasileira no intervalo de confiança de 95%.The morpholinedithiocarbamate (Mor); piperidinedithiocarbamate (Pip) and pirrolidinedithiocarbamate (Pyr), three cyclic amines derived respectivelly from morpholine, piperidine and pirrolidine complex of Ruthenium (III) were synthesized and characterized by elemental analysis, infra-red spectroscopy, mass spectrometry and thermal analysis (thermogravimetry TG and differential thermal analysis DTA). Elemental analysis showed that complexes of general formula Ru2DTC5.XH2O ((DTC = Mor, Pip e Pyr e X = 4, 1,5 e 2 respectively) were obtained. IR spectra revelead that the ligant behaves as a monodentate one with a duplet around 1000 cm-1. Mass spectrometry showed the molecular structures and the stability of the complexes, therefore they require high energy of collision to be broken up; some fragments could have been identified. Thermal analysis showed that after dehydration the complexes decomposed generating Ru2(SO4)3 and Ru2O3 as residues depending on the temperature, according to XDR analysis. After characterization the complexes were used as modifiers in the preparation of carbon paste electrodes. The performance of the modified electrodes (MCPE) was evaluated by cyclic voltammetry at different electrode composition and supporting electrolytes and potential intervals. On basis of peak definition and background current, the MCPERu2Pip5.1,5H2O, containing 10% of the complex, was chosen for further studies. The electrode was used in the determination of carbamazepine (CBZ) cyclic voltammetry. In the presence of CBZ the modifier current increased proportionally, to the analyte concentration in the 1,30 x 10-8 and 6,62 x 10-6 mol L-1. The method was applied in the determination of CBZ in synthetic urine sample spikes with the analyte with recoveries of 97 104%. Whem compared with a standart spectrophotometric procedure the results of the prposed method agreeded within 95% of confidence, according to the t-Student test.
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Silva, Larissa Santos. "Construção e otimização de um eletrodo de pasta de carbono modificado com óxido de manganês tipo espinélio dopado com cobalto (III) para determinação potenciométrica de íons lítio." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/75/75135/tde-02022015-113733/.
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Os efeitos terapêuticos dos sais de lítio são comprovados no tratamento de pacientes com depressão, certos tipos de câncer e transtornos bipolares de humor. A dosagem de lítio deve ser cuidadosamente controlada em cada paciente já que excessos na dosagem podem conduzir a danos irreversíveis no sistema nervoso e nos rins. Sendo assim é interessante produzir métodos de baixo custo, simples e rápidos que permitam o monitoramento desse íon. Portanto no presente trabalho foi estudado o desempenho potenciométrico de um eletrodo compósito de pasta de carbono modificado com óxido de manganês tipo espinélio dopado com cobalto (III). O eletrodo de pasta de carbono modificado foi preparado pela mistura de 55% (m/m) de pó de grafite, 20% (m/m) de aglutinante (óleo mineral) e 25% (m/m) de óxido de manganês dopado com cobalto (III) (Li1,05Co0,02Mn1,98O4.). O desempenho eletroquímico do eletrodo foi estudado através de voltametria cíclica (etapa de ativação) e cronopotenciometria (i=0) (etapas de estabilização e adição de padrão). Na caracterização eletroquímica do eletrodo estudou-se a melhor concentração de íons lítio para ativação do sensor, bem como a melhor velocidade de varredura, tempo de estabilização, pH, intervalo linear de resposta, limite de detecção e possíveis íons interferentes. Encontrou-se um limite de detecção de 3,98 x 10-6 mol L-1, intervalo linear de resposta de 1,82 x 10-4 mol L-1 a 1,62 x 10-3 mol L-1, pouca interferência dos íons estudados (Na+, K+, Rb+, Cs+, Mg+2, Ca+2 e Ba+2) sendo a interferência proporcional ao raio iônico dos íons interferentes e sensibilidade de 97,90 mV dec-1. Esse valor de sensibilidade classifica o eletrodo estudado como tendo resposta supernerstiniana o que pode ser atribuído à coexistência de sítios de troca iônica e sítios redox no processo de inserção/extração dos íons lítio na matriz do óxido de manganês. A substituição parcial dos íons Mn pelos íons Co provoca uma diminuição no parâmetro de célula unitária do óxido, o que melhora a estabilidade da estrutura durante o processo de inserção/extração de íons lítio fornecendo maior sensibilidade e propiciando maior seletividade.The therapeutic effects of lithium salts have been proved useful, as an example given, in the treatment of patients who presents depressive behavior, bipolar disorder and certain types of cancer. The lithium dosage for each patient has to be carefully controlled because an excessive dose can produce irreversible damages to the nervous system and the kidneys. Therefore is interesting produce low cost, simple and quick methods to allow the monitoring of this ion. Hence in this work, the performance of a composite potentiometric carbon paste electrode modified with spinel type manganese oxide doped with cobalt (III) (Li1,05Co0,02Mn1,98O4) was studied. The modified carbon paste electrode was prepared by mixing 55% (w / w) of graphite powder, 20% (w / w) binder (mineral oil) and 25% (m / m) manganese oxide doped with Cobalt (III). The potentiometric performance of the electrode was studied by cyclic voltammetry (activation step) and potentiometry - zero current (stabilization and standard addition steps). The electrochemical characterization of the electrode consisted of the studies of the optimal concentration of lithium ions for activation of the sensor, as well as the best scan rate, stabilization time, pH, linear response range, detection limit and possible interfering ions. In pH = 10, the better one chosen for this study, it was found a detection limit of 3.98 x 10-6 mol L-1, a linear response range from 1.82 x 10-4 mol L-1 to 1.62 x 10-3 mol L-1, low interference from the studied ions (Na+, K+, Rb+, Cs+, Mg+2, Ca+2 e Ba+2), which is proportional to their ionic radius and sensitivity of 97,90 mV dec-1. This high sensitivity value can be attributed to the coexistence of ion exchange sites and redox sites in the insertion / extraction of lithium ions in the manganese oxide matrix process. The best working pH was around 10, as opposed to working with similar materials found in the literature. This can be explained by the substitution of manganese for cobalt (III) in the structure of the spinel type manganese oxide. This substitution causes a decrease in the unit cell parameter of the oxide, which improves the stability of the structure during the process of insertion / extraction of lithium ions and resistance to change in alkaline solutions.
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Cardoso, William da Silva. "Oxido misto de SiO2/SnO2,SiO2/SnO2/Fosfato : propriedades e aplicações." [s.n.], 2005. http://repositorio.unicamp.br/jspui/handle/REPOSIP/249698.
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Orientador: Yoshitaka GushikemTese (doutorado) - Universidade Estadual de Campinas, Instituto de Quimica
Made available in DSpace on 2018-08-04T23:27:35Z (GMT). No. of bitstreams: 1 Cardoso_WilliamdaSilva_D.pdf: 740346 bytes, checksum: bbae1435b7392cf211b02cc55af7333d (MD5) Previous issue date: 2005
Doutorado
Quimica Inorganica
Doutor em Ciências
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Oliveira, Gonçalo Vieira Saraiva de. "Removal of pharmaceuticals from water using paper pulp-based carbon adsorbents." Master's thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/22241.
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Mestrado em Biotecnologia Industrial e AmbientalThe occurrence of pharmaceuticals in the environment, mainly aquatic, is a worrying issue, with Wastewater Treatment Plants (WWTP) being the main entry route of these compounds due to their inefficient ability to remove them from contaminated water. Adsorption is a very effective method for this purpose, with activated carbons being the most commonly used adsorbents. Considering that commercial activated carbons are expensive, in part due to the price of their precursors, the production of adsorbents from alternative raw materials is an interesting solution and fits within the concept of sustainable economy. In this work, two type of pulps, bleached (BP) and raw pulp (RP), derived from the pulp and paper production process, were used as precursors for production of non-activated and activated carbons. For activated carbons, the pulps were impregnated with two chemical activating agents (K2CO3 or H3PO4), and then pyrolysed and washed with acid. After production, the materials were physically and chemically characterized. To test the performance of these carbons as adsorbents, batch adsorption tests were performed with ultra-pure water and with WWTP effluents, using two pharmaceuticals: the anti-epileptic carbamazepine (CBZ) and the antibiotic sulfamethoxazole (SMX). For the amounts of carbon tested, in ultra-pure water, the results showed no adsorption for non-activated carbons and good adsorption capacities for the activated ones. Comparing the adsorption tests in real effluents with CBZ and SMX, tests with SMX presented low adsorption capacities, probably due to the different interactions establish between the two pharmaceuticals and carbons surface, in the presence of high organic load. Tests with real effluents presented better adsorption capacities for carbons activated with H3PO4 and produced from BP: 92 ± 19 mg g-1 for CBZ and 13.0 ± 0.6 mg g-1 for SMX. These results indicate the potential of these pulps to be used as precursors for activated carbons that can be applied in wastewater treatment.
A existência de fármacos no meio ambiente, em particular ambientes aquáticos, constitui um problema preocupante, sendo as Estações de Tratamento de Águas Residuais (ETAR) a principal via de entrada destes compostos no meio, devido à sua ineficácia para os remover das águas contaminadas. A adsorção é um método bastante eficiente, sendo os carvões ativados os adsorventes mais comummente utilizados. Uma vez que os carvões ativados comerciais são caros, em parte devido ao preço dos seus precursores, a produção de adsorventes a partir de matérias-primas alternativas é uma solução interessante que se enquadra no conceito de economia sustentável. Neste trabalho foram utilizados dois tipos de pasta, branqueada (BP) e crua (RP), derivadas do processo de produção da pasta de papel, como precursores para a produção de carvões ativados e não ativados. Na ativação, as pastas foram impregnadas com dois agentes químicos ativantes (K2CO3 ou H3PO4) e posteriormente pirolisadas e lavadas com ácido. Após a produção, os materiais foram física e quimicamente caraterizados. De forma a testar o desempenho dos carvões enquanto adsorventes, foram realizados testes de adsorção em descontínuo com água ultrapura e com efluentes recolhidos em ETAR, utilizando dois fármacos: o antiepilético carbamazepina (CBZ) e o antibiótico sulfametoxazol (SMX). Para as quantidades de carvão utilizadas, os resultados em água-ultrapura mostraram adsorção nula para os carvões não ativados e boas capacidades de adsorção para os carvões ativados. Comparando os testes realizados para os efluentes reais com CBZ e SMX, os testes com SMX apresentaram baixas capacidades de adsorção, provavelmente devido às diferentes interações estabelecidas entre as superfícies do fármaco e do carvão, na presença de elevada carga orgânica. Os testes com efluentes reais apresentaram melhores capacidades de adsorção para carvões ativados com H3PO4 e produzidos a partir da BP: 92 ± 19 mg.g-1 para a CBZ e 13.0 ± 0.6 mg.g-1 para o SMX. Estes resultados refletem as potencialidades destas pastas para serem utilizadas como precursoras de carvões ativados, os quais podem ser aplicados no tratamento de águas residuais.
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Marzal, Percy Calvo. "Desenvolvimento de um eletrodo amperometrico para determinação de glutationa em eritrocitos." [s.n.], 2005. http://repositorio.unicamp.br/jspui/handle/REPOSIP/248417.
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Orientadores: Lauro Tatsuo Kubota, Nelci Fenalti HoehrTese (doutorado) - Universidade Estadual de Campinas, Instituto de Quimica
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Doutorado
Quimica Analitica
Doutor em Ciências
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Segnini, Aline. ""Uso de pirrolidinoditiocarbamatos de manganês(II) e vanadila na preparação e aplicação de eletrodos de pasta de carbono modificados"." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/75/75132/tde-02102004-121100/.
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Devido à sua baixa solubilidade em água, os pirrolidinoditiocarbamatos poderiam produzir eletrodos livres do problema de lixiviação do modificador, os quais poderiam ser usados como detectores amperométricos, em análises em fluxo e outros procedimentos hidrodinâmicos. O complexo poderia agir como um intermediário de transferência de elétrons entre o analito e a superfície eletródica, aumentando a sensibilidade da resposta analítica do sensor. Desta forma, eletrodos de pasta de carbono modificados (EPCM) com complexos de pirrolidinoditiocarbamatos anidros de diversos metais foram preparados e testados quanto à sua aplicação em técnicas voltamétricas. Os complexos de manganês(II), [MnPyr2] e cobalto(II), [CoPyr2], foram os que apresentaram os melhores resultados em termos de estabilidade e reprodutibilidade de resposta, escolhendo-se o EPCM-[MnPyr2], para uso neste trabalho. O desempenho do eletrodo foi avaliado usando voltametria cíclica, cronoamperometria e análise em fluxo, com detecção amperométrica de peróxido de hidrogênio apresentando regiões lineares de 1,25-14,8; 0,5-41; 1,0-75 x 10-4 mol L-1 e limites de detecção de 11,2; 2,98; 5,40 x 10-5 mol L-1 respectivamente para cada técnica. Na determinação de peróxido de hidrogênio em amostra de alvejante comercial observou-se concordância nos resultados obtidos em voltametria cíclica e análise em fluxo, usando o eletrodo proposto em comparação com a permanganometria clássica, com 95 % de intervalo de confiança. Estes resultados foram obtidos após otimização de parâmetros como velocidade de varredura, pH, eletrólito suporte, entre outros. A oxidação ocorre por meio de um processo eletrocatalítico. O desempenho do pirrolidinoditiocarbamato de vanadila hidratado também foi avaliado como alternativa aos ditiocarbamatos anidros, na preparação de eletrodos modificados com esta classe de complexos, considerando que os complexos hidratados seriam mais fáceis de preparar. Entretanto uma baixa estabilidade e reprodutibilidade de resposta foi observada. O [MnPyr2] mostrou comportamento no qual ocorre oxidação, concordando com a proposta de Schrauzer para ligantes do tipo ímpar, apesar de que a oxidação só ocorreu na presença de oxidantes fortes, como o peróxido de hidrogênio.Considering their low solubility in water, the dithiocarbamate complexes should produce electrodes without problems of modifier leaching. Such electrodes could be used as amperometric detectors in flow injection analysis and hydrodynamic methods. The complex should act as an electron transfer mediator between the analyte and the electrode surface, improving the response sensitivity of the sensor. Considering these statements carbon paste electrodes modified (EPCM) with anhydrous pyrrolidinedithiocarbamates of several metals were prepared and evaluated in relation to their possible application in voltammetric techniques. Best results regarding response stability and reproducibility were obtained with manganese(II), [MnPyr2] and cobalt(II), [CoPyr2] complexes. The first one was chosen to develop the present work. The electrode performance was evaluated in cyclic voltammetry, chrono amperometric and flow injection analysis with amperometric detection. Linear dynamic ranges of 1,25-14,8; 0,5-41; 1,0-75 x 10-4 mol L-1 and limits of detection of 11,2; 2,98; 5,40 x 10-5 mol L-1 were found respectively for each technique in the determination of hydrogen peroxyde. The methods were used for the determination of H2O2 in bleaching formulation and presented agreement with the classical titration with potassium permanganate within 95% confidence level. Such results have been obtained after optimization of experimental parameters such as scan rate, pH, supporting electrolyte, and others. The oxidation occurred by an electrocatalytic process. Finally the performance of a carbon paste electrode modified with a hydrated vanadyl pyrrolidinedithiocarbamate complex was evaluated as an alternative to the anhydrous complex in the preparation of the modified electrode, since the hydrated complexes are easier to prepare. However a low response stability and reproducibility have been observed. The [MnPyr2] presented an oxidation behavior in agreement with Schrauzers predictions, although the oxidation of the metal center occurred only in the presence of strong oxidative agents as the hydrogen peroxide.
Books on the topic "Carmen de pascha"
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Universität Münster. Institut für Altertumskunde., ed. Sedulius, Carmen paschale, Buch III. Schwabe, 1996.
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Witte, Bernd. Die Schrift des Origenes "Über das Passa": Textausgabe und Kommentar. Oros, 1993.
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Sedulio: Tra prosa e poesia : l'Opus paschale e il Carmen paschale. Libreriauniversitaria.it, 2013.
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Paulus Wilhelmus Antonius Theodorus van der Laan. Sedulius, Carmen paschale, boek 4: Inleiding, vertaling, commentaar. P.W.A.Th. van der Laan, 1990.
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Nebrija, Antonio de. Comentario al Carmen Paschale y a dos himnos de Sedulio. Ediciones Universidad de Salamanca, 2011.
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The Gospel as epic in late antiquity: The Paschale carmen of Sedulius. E.J. Brill, 1988.
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1849-1915, Huemer Johann, Panagl Victoria 1978-, Sedulius 5th cent, Sedulius 5th cent, and Remigius, of Auxerre, ca. 841-908., eds. Sedulii Opera omnia: Una cum excerptis ex Remigii Expositione in Sedulii Paschale carmen. Verlag der Österreichischen Akademie der Wissenschaften, 2007.
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Springer, Carl P. E. The Gospel Epic in Late Antiquity: The Paschale Carmen of Sedulius (Supplements to Vigiliae Christianae, Vol 2). Brill Academic Publishers, 1988.
Book chapters on the topic "Carmen de pascha"
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Tang, Yanhong, Toshinori Okuda, Muhamad Awang, Abd Rahim Nik, and Makoto Tani. "Sunfleck Contribution to Leaf Carbon Gain in Gap and Understory Tree Seedlings of Shorea macrophylla." In Pasoh. Springer Japan, 2003. http://dx.doi.org/10.1007/978-4-431-67008-7_18.
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Norris, Oliver. "5. The Sources for the Temptations Episode in the Paschale Carmen of Sedulius." In Early Readers, Scholars and Editors of the New Testament, edited by Thomas O’Loughlin, Hans Förster, Ulrike Swoboda, et al. Gorgias Press, 2014. http://dx.doi.org/10.31826/9781463236496-008.
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Smolyakov, V. M., D. V. Sokolov, D. Yu Nilov, V. V. Grebeshkov, and D. M. Fedin. "Carboranes and Boranes: Enumeration of Isomer Substitutes and Property Calculation Schemes on the Basis of Pascal Triangle." In Carbon Nanomaterials in Clean Energy Hydrogen Systems - II. Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-0899-0_31.
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"Appendix 1. Outline of the Carmen Paschale." In Biblical Epics in Late Antiquity and Anglo-Saxon England. University of Toronto Press, 2017. http://dx.doi.org/10.3138/9781487514280-012.
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"Narrative and Exegesis in Sedulius’ Carmen paschale." In Poetry, Bible and Theology from Late Antiquity to the Middle Ages. De Gruyter, 2020. http://dx.doi.org/10.1515/9783110687224-002.
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"IMITATION CRÉATIVE DANS LE CARMEN PASCHALE DE SÉDULIUS." In Early Christian Poetry. BRILL, 1993. http://dx.doi.org/10.1163/9789004312890_010.
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"Chapter Four. Sedulius’ Carmen Paschale (c. 425–450 CE)." In Biblical Epics in Late Antiquity and Anglo-Saxon England. University of Toronto Press, 2017. http://dx.doi.org/10.3138/9781487514280-006.
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"Sedulius’ Peter: Intention and Authority in the Paschale carmen." In The Early Reception and Appropriation of the Apostle Peter (60-800 CE). BRILL, 2020. http://dx.doi.org/10.1163/9789004425682_011.
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Simaika, Samir, and Nevine Henein. "The State Railways." In Marcus Simaika. American University in Cairo Press, 2017. http://dx.doi.org/10.5743/cairo/9789774168239.003.0005.
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This chapter focuses on Marcus Simaika's career in the Egyptian State Railways. When Simaika graduated in 1882, Egypt was under British occupation. Gross financial mismanagement, first by the viceroy, Said Pasha, and to a far greater extent by his nephew and successor, Ismaʻil Pasha, had put Egypt on its way to bankruptcy. After conducting an investigation, the British government implemented a number of measures that led to widespread nationalistic resentment in the country, particularly within the army. Simaika first worked at a hospital in Cairo before applying as a translator in the Engineering Department of the State Railways. He eventually transferred to the Purchasing and Contracts Office. In his memoirs, Simaika recounts several incidents in which he fell prey to machinations by colleagues and superiors who resented his accomplishments. In 1906, he resigned his position of chief auditor and retired from government service at the age of forty-two.
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"Appendix 2. Miracles in Book One of the Carmen Paschale." In Biblical Epics in Late Antiquity and Anglo-Saxon England. University of Toronto Press, 2017. http://dx.doi.org/10.3138/9781487514280-013.
Full textConference papers on the topic "Carmen de pascha"
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Santos, Sâmia Melo, and Alana Rayssa Oliveira Mendes. "RELAÇÃO HOMEM – NATUREZA: FATOR DE CAUSALIDADE DA CRISE AMBIENTAL." In II Congresso Brasileiro de Ciências Farmacêuticas On-line. Revista Multidisciplinar em Saúde, 2021. http://dx.doi.org/10.51161/rems/1039.
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Introdução: O meio ambiente é fonte de sobrevivência para o homem desde os primórdios, o mesmo retira dele seu sustento, extraindo riquezas naturais como: água, alimentos (frutos, legumes, carne bovina, carne suína, peixes, ovinos etc.). Para melhoramento da agricultura ao longo dos anos, o homem passou fazer o uso de substâncias químicas para acelerar processo de amadurecimento das frutas, evitar pragas e estimular o crescimento. A interferência do homem no meio ambiente acabou por prejudicar sua própria existência, os danos são tão grandes que interferem no processo saúde-doença. Objetivo: Portanto, o objetivo deste trabalho é realizar uma revisão de literatura acerca da relação homem – natureza e como a mesma pode afetar a agricultura e interferir no processo saúde-doença. Material e métodos: Para isto, foi realizada uma revisão de literatura nos bancos de dados Scielo e Pubmed. Resultados: Portanto a necessidade humana de desenvolvimento capitalista transformou o meio ambiente em uma moeda de troca levando a uma crise ambiental, na qual a sua própria existência passa a ser questionada. Segundo alguns autores como Balim, o homem primitivo não interferia na natureza sem cautela, sempre tentava manter o equilíbrio, mas ao modernizar seu modo de pensar, começou a estar no centro de tudo, sempre extraindo bens da natureza como se estes não fossem finitos. Conclusão: Esta forma de agir se encaixa em uma perspectiva simplista onde o meio ambiente é apenas um objeto para uso humano, necessitando assim de uma nova visão de mundo para entender que os recursos do planeta são finitos.