2,915 research outputs found
Ossidazione elettrocatalitica di alcoli per la produzione di composti ad alto valore aggiunto
No full textQuesta tesi presenta lo sviluppo di un sistema elettrocatalitico efficiente e selettivo per l'esterificazione ossidativa di etanolo ad acetato di etile, una reazione mai riportata fino ad ora. Il sistema impiega [Ru4(μ-O)4(μ-OH)2(H2O)4(γ-SiW10O36)2]10- (Ru4POM) come elettrocatalizzatore omogeneo, raggiungendo un'efficienza faradaica fino all'80% in etanolo anidro. Il sistema dimostra versatilità, mostrando una selettività simile per la produzione di formiato di metile in metanolo.
Un ulteriore miglioramento è stato introdotto con lo sviluppo di un elettrocatalizzatore eterogeneo combinando Ru4POM con carbon nanohorns (CNHs), che migliora significativamente le prestazioni elettrocatalitiche riducendo drasticamente la quantità di Ru4POM utilizzata. Il materiale ibrido presenta un aumento di circa 10 volte della densità di corrente e turnover number (TON) e turnover frequency (TOF) ordini di grandezza superiori rispetto al sistema omogeneo, senza comprometterne la selettività.
Lo studio esplora anche l'influenza del doping di azoto nei CNH, dimostrando che anche una minima di N migliora significativamente la stabilità del materiale ibrido in condizioni operative. Infine, per fissare Ru4POM ai CNH viene impiegata un'innovativa tecnica di elettro-adsorbimento, che sfrutta le proprietà uniche dei CNH, come l'elevata area superficiale, la porosità e le cavità nanometriche che fungono da nanoreattori. Questo approccio produce elettrodi (E-ads/Ru4POM@N-CNHs e E-ads/Ru4POM@p-CNHs) con un'efficienza faradica superiore al 90% per la produzione di acetato di etile, oltre a una maggiore stabilità fino a 18 ore di funzionamento continuo.
Inoltre, lo studio evidenzia la reversibilità dell'interazione tra Ru4POM e p-CNHs a seconda del potenziale applicato, che consente il rilascio del catalizzatore e la potenziale rigenerazione dell'interfaccia supporto-catalizzatore. Questa caratteristica potrebbe estendere la durata operativa degli elettrodi, rendendo la metodologia promettente per future applicazioni industriali.This thesis presents the development of an efficient and selective electrocatalytic system for the oxidative esterification of ethanol to ethyl acetate, a transformation not previously reported. The system employs [Ru4(μ-O)4(μ-OH)2(H2O)4(γ-SiW10O36)2]10− (Ru4POM) as a homogeneous electrocatalyst, achieving a Faradaic efficiency of up to 80% in dry ethanol. The system demonstrates versatility, showing similar selectivity for methyl formate production in methanol.
Further innovation is introduced through the development of a heterogeneous electrocatalyst by combining Ru4POM with carbon nanohorns (CNHs), which significantly enhances electrocatalytic performance while drastically reducing the amount of Ru4POM required. The hybrid material exhibits approximately a 10-fold increase in current density and higher turnover number (TON) and turnover frequency (TOF) compared to the homogeneous system, without compromising selectivity.
The study also explores the influence of nitrogen doping in CNHs, showing that even minimal N-doping significantly improves the stability of the hybrid material under operational conditions. A novel electro-adsorption technique is employed to attach Ru4POM to CNHs, capitalizing on the unique properties of CNHs, such as high surface area, porosity, and nanometric cavities that act as nanoreactors. This approach yields electrodes (E-ads/Ru4POM@N-CNHs and E-ads/Ru4POM@p-CNHs) with Faradaic efficiency exceeding 90% for ethyl acetate production, along with enhanced stability for up to 18 hours of continuous operation.
Additionally, the study highlights the reversibility of the interaction between Ru4POM and p-CNHs, which allows for catalyst release and potential regeneration of the support-catalyst interface. This feature could extend the electrodes' operational lifetime, making the methodology promising for future industrial applications
Rozpor ako východisko, láska ako smer u Simone Weilovej (Contradiction as base, Love as direction in writings of Simone Weil)
No full textArticle is explaining contradiction and love, Simone Weil‘s essential terms of hermeneutics of human Being. It introduces close relation of these terms with her understanding of God as well as with her overall concept of religion. Author also mentions Simone Weil‘s inspirations with philosophical and spiritual concepts of the East
“I beg you to tell me what has become of Djamila”: The Political Mobilization of Simone de Beauvoir’s Readers During the Boupacha Affair
No full textBy Sophia Millman This is a condensed version of a Masters thesis dedicated to the political mobilization of Simone de Beauvoir’s readers. The citations from the letters were translated from French by the author. *** On June 2, 1960, the French government ordered all copies of the daily Algiers edition of Le Monde seized and destroyed to suppress the publication of Simone de Beauvoir’s article “Pour Djamila Boupacha.” Beauvoir, a self-professed “woman of letters”, not “of action[1]”, and one ..
A comparative study of form and theology in the works of Flannery O'Connor and Simone Weil
No full textIn this comparative study of the form and theology of Flannery O'Connor and Simone Weil I interrogate how Weil's philosophical writings and her theology illuminate O'Connor's use of both narrative and non-fictional forms, and her Catholicism. The Introduction analyses how Weil's concept of superposed reading provides a new method of approaching both O'Connor, her writings, and O'Connor
studies, and focuses on how such apparently different women interconnect. Chapter One explores how both Weil and O'Connor attempt to write their theologies on the
souls of their readers yet are each subject to constraints imposed by form. Weil's concept of locating equilibrium between incommensurates is discussed, and her
distinctively philosophical approach to fictions and fictionality is used to investigate O'Connor's notion of prophetic fictions and the writer's role. Chapter Two assesses how both writers revivify Christian paradoxes. Weil's monstrous concept of affiiction, and O'Connor's use of the grotesque genre to jolt secular man into an
awareness of the sacred are scrutinised. Chapter Three studies how both writers consider an encounter between God and man is possible through the action of grace. My Conclusion interrogates how Weil's work can deepen our understanding of O'Connor's writings, and examines how successful O'Connor is at realising a truly
Christian literature. I conclude that despite being a writer of powerful fictions, O'Connor can not be totally successful in her mission as writer-prophet because
ultimately fiction escapes orthodoxy
Microlinices benthovus Simone 2014
No full textbenthovus, Microlinices Simone, 2014 Microlinices benthovus Simone, 2014: 575–578 (figs 6A–J, 7A–H, 11A–C). Gastropoda, Naticidae Paratypes (22 spc): MZSP 105269. Paratypes 1 (15 spc): MZSP 105270. Paratypes 2 (16 spc): MZSP 105271. Paratypes 3 (7 spc): MZSP 105272. Localities: Brazil, Espírito Santo, off Itaúnas, Abrolhos Slope, 18°59' S, 37°50' W, MD55 sta. DC 73, 637 m depth, 27 May 1987; 1) 19°00' S, 37°48' W, MD55 sta. DC72, 950– 1050 m, 27 May 1987; 2) off Regência, 19°40' S, 37°48' W, MD55 sta. CB77, 790– 940 m depth, 27 May 1987; 3) off Itaúnas, Abrolhos Slope, 19°01' S, 37°47' W, MD55 sta. CB79, 1500–1575 m depth, 28 May 1987. Collectors: P. Bouchet, J.H. Leal and B. Métivier. Preservation: Dry. Remarks: Former MNHN, Paris. The catalogue number MZSP 105250 is mentioned twice in Simone’s (2014) paper, among the paratypes of M. ibitingus Simone, 2014 and M. benthovus. This duplicity was a mistake by the author: the latter is an erroneous designation and should be disregarded. The only valid paratype lots for M. benthovus are the ones shown above.Published as part of Cavallari, Daniel C., Dornellas, Ana Paula S. & Simone, Luiz Ricardo L., 2016, Second annotated list of type specimens of molluscs deposited in the Museu de Zoologia da Universidade de São Paulo, Brazil, pp. 1-59 in European Journal of Taxonomy 213 on page 10, DOI: 10.5852/ejt.2016.213, http://zenodo.org/record/384012
Was bringt die Föderalismusreform? Wahrscheinliche Effekte der geänderten Zustimmungspflicht
No full textThe recently enacted reform of German federalism is supposed to make legislation faster, more efficient and better. To what extent are these expectations justified? In order to assess the likely effects of the reform, this study uses a research design that was recently applied by the Research and Reference Services of the German Bundestag (parliament): we estimate the future effects of the reform by analyzing the impact it would have had on the legislation in the 14th and 15th term of the Bundestag if it had already been been in force at that time. In particular we ask: To what extent would the number of laws requiring the consent of the states' chamber, the Bundesrat, have been reduced? Which type of laws would have been affected by this reduction - the more controversial ones, or the less controversial ones? Which policy sectors would have seen the greatest reduction? How much would the reduction have increased the government's capacity to act effectively? Would the legislative process have been accelerated? -- Die verabschiedete Föderalismusreform soll die Gesetzgebung in Deutschland schneller, effizienter und besser machen. Inwiefern sind diese Erwartungen berechtigt? Zur Abschätzung der Reformfolgen auf die Bundesgesetzgebung folgen wir in dem vorliegenden Working Paper einer Vorgehensweise, die der Wissenschaftliche Dienst des Bundestages kürzlich in einer Studie angewandt hat: Die Auswirkungen der Föderalismusreform insbesondere auf die Zustimmungspflicht werden anhand der Gesetzgebung der 14. und 15. Legislaturperiode untersucht. Wir fragen insbesondere: Wie stark hätte sich der Anteil der Zustimmungsgesetze verringert, wenn die neuen Zustimmungsregeln schon in diesen beiden Legislaturperioden gegolten hätten? Wären eher zwischen Regierung strittige oder unstrittige Gesetze von der Zustimmungspflicht befreit worden? Welche Politikbereiche wären betroffen? Wie sehr hätte sich die politische Handlungsfreiheit der Bundesregierung erhöht? Wäre die Gesetzgebung durch die veränderten Zustimmungsregeln beschleunigt worden?
Idea ofiary u Simone Weil
No full textAutorka omawia ofiarę, jaką z samej siebie złożyła Simone Weil. Głównym celem autorki artykułu jest wykazanie, iż idea ofiary była najważniejszą myślą w życiu francuskiej filozof. W artykule ukazano myśl o ofierze w życiu i pismach intelektualistki, jak również analogie, które rzucają nowe światło na ofiarę Weil. Jako klucz do interpretacji i zrozumienia ofiary Weil, autorka analizuje myśl Emmanuela Levinasa oraz Józefa Tischnera.The author interprets the sacrifice that Simone Weil filed with itself. The main point of the present article is the assumption that the sacrifice Simone Weil was the most important idea of her life. A thought about the victim is portraying the article in the life and letters of the intellectual, as well as is portraying analogies which are shedding new light on the Weil victim. As the key to interpretation and understanding the her victim, the author is analysing the thought of Emmanuel Levinas and Jozef Tischner.Udostępnienie publikacji Wydawnictwa Uniwersytetu Łódzkiego finansowane w ramach projektu „Doskonałość naukowa kluczem do doskonałości kształcenia”. Projekt realizowany jest ze środków Europejskiego Funduszu Społecznego w ramach Programu Operacyjnego Wiedza Edukacja Rozwój; nr umowy: POWER.03.05.00-00-Z092/17-00
Interleukin-6 levels in the cerebrospinal fluid and serum of patients with Guillain-Barré syndrome and chronic inflammatory demyelinating polyradiculoneuropathy
No full textClinical and experimental findings suggest that humoral factors, such as anti-peripheral nerve antibodies and cytokines, may be implicated in the immunopathogenesis of Guillain-Barré syndrome (GBS) and chronic inflammatory demyelinating polyradiculoneuropathy (CIDP). Interleukin-6 (IL-6) is a multifunctional cytokine that promotes immunoglobulin synthesis by B lymphocytes. Increased IL-6 release is associated with autoantibody production in a number of immune-mediated and neoplastic disorders. To investigate the possible involvement of abnormal IL-6 release in inflammatory polyneuropathies, we assayed IL-6 levels in the cerebrospinal fluid (CSF) and serum of 23 patients with acute GBS and seven with CIDP. We also studied 69 patients with other non-inflammatory neurological diseases (NIND), 25 with other inflammatory neurological diseases (IND), four with brain tumors (BT), and 15 normal donors (serum alone) as controls. We found detectable levels of IL-6 in the CSF of 57% of GBS, 43% of CIDP, 60% of IND, 75% of BT, and 4% of NIND. In GBS patients, no correlation was found between CSF IL-6 values and other laboratory or clinical parameters, such as CSF total protein, CSF albumin, CSF IgG, CSF/serum albumin ratio, functional disability score, and time elapsed from disease onset. Serum IL-6 levels were increased in six of 23 (26%) GBS, in one of 39 (3%) NIND, and in one of seven (14%) IND, but in none of the CIDP or BT patients. There was no correlation between serum and CSF IL-6 values, but cytokine levels in GBS sera correlated with time elapsed from clinical onset
Interleukin-6 levels in the cerebrospinal fluid and serum of patients with Guillain-Barré syndrome and chronic inflammatory demyelinating polyradiculoneuropathy
No full textClinical and experimental findings suggest that humoral factors, such as anti-peripheral nerve antibodies and cytokines, may be implicated in the immunopathogenesis of Guillain-Barré syndrome (GBS) and chronic inflammatory demyelinating polyradiculoneuropathy (CIDP). Interleukin-6 (IL-6) is a multifunctional cytokine that promotes immunoglobulin synthesis by B lymphocytes. Increased IL-6 release is associated with autoantibody production in a number of immune-mediated and neoplastic disorders. To investigate the possible involvement of abnormal IL-6 release in inflammatory polyneuropathies, we assayed IL-6 levels in the cerebrospinal fluid (CSF) and serum of 23 patients with acute GBS and seven with CIDP. We also studied 69 patients with other non-inflammatory neurological diseases (NIND), 25 with other inflammatory neurological diseases (IND), four with brain tumors (BT), and 15 normal donors (serum alone) as controls. We found detectable levels of IL-6 in the CSF of 57% of GBS, 43% of CIDP, 60% of IND, 75% of BT, and 4% of NIND. In GBS patients, no correlation was found between CSF IL-6 values and other laboratory or clinical parameters, such as CSF total protein, CSF albumin, CSF IgG, CSF/serum albumin ratio, functional disability score, and time elapsed from disease onset. Serum IL-6 levels were increased in six of 23 (26%) GBS, in one of 39 (3%) NIND, and in one of seven (14%) IND, but in none of the CIDP or BT patients. There was no correlation between serum and CSF IL-6 values, but cytokine levels in GBS sera correlated with time elapsed from clinical onset
My life on the road: the exhilarating experience of travel
No full textVERSION FRANÇAISE ICI By Tiphaine Martin Researcher at Babel, University of Toulon, Member of the editorial board of Simone de Beauvoir Studies and author of a doctoral dissertation about Simone de Beauvoir's travels Translated from French by Marine Rouch (under the kind supervision of her dear friend Daniel Sawyer) I will begin with a brief criticism of the French edition. While the translation is very pleasant and captures Gloria Steinem's fluidity, humor and appetite for life, there is no..
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