Relevant bibliographies by topics / Plasmi freddi

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

Academic literature on the topic 'Plasmi freddi'

Author: Grafiati
Published: 9 March 2023
Last updated: 31 July 2025

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Journal articles on the topic "Plasmi freddi"

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Acosta-Jurado, Sebastián, Cynthia Alías-Villegas, Andrés Almozara, M. Rosario Espuny, José-María Vinardell, and Francisco Pérez-Montaño. "Deciphering the Symbiotic Significance of Quorum Sensing Systems of Sinorhizobium fredii HH103." Microorganisms 8, no. 1 (2020): 68. http://dx.doi.org/10.3390/microorganisms8010068.

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Quorum sensing (QS) is a bacterial cell-to-cell signaling mechanism that collectively regulates and synchronizes behaviors by means of small diffusible chemical molecules. In rhizobia, QS systems usually relies on the synthesis and detection of N-acyl-homoserine lactones (AHLs). In the model bacterium Sinorhizobium meliloti functions regulated by the QS systems TraI-TraR and SinI-SinR(-ExpR) include plasmid transfer, production of surface polysaccharides, motility, growth rate and nodulation. These systems are also present in other bacteria of the Sinorhizobium genus, with variations at the sp
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Vinardell, JoséMaría, Francisco Javier Ollero, Ángeles Hidalgo, et al. "NolR Regulates Diverse Symbiotic Signals of Sinorhizobium fredii HH103." Molecular Plant-Microbe Interactions® 17, no. 6 (2004): 676–85. http://dx.doi.org/10.1094/mpmi.2004.17.6.676.

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We have investigated in Sinorhizobium fredii HH103-1 (=HH103 Strr) the influence of the nolR gene on the production of three different bacterial symbiotic signals: Nod factors, signal responsive (SR) proteins, and exopolysac-charide (EPS). The presence of multiple copies of nolR (in plasmid pMUS675) repressed the transcription of all the flavonoid-inducible genes analyzed: nodA, nodD1, nolO, nolX, noeL, rhcJ, hesB, and y4pF. Inactivation of nolR (mutant SVQ517) or its overexpression (presence of pMUS675) altered the amount of Nod factors detected. Mutant SVQ517 produced Nod factors carrying N-
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Dave, Akash, Tanvi Khanna, and Pushpa Robin. "Exploiting Rhizobium for Cadmium Sulphide Nanoparticle Synthesis: Heterologous Expression of an Escherichia coli DH10B Enzyme, YbdK [EC: 6.3.2.2] in Sinorhizobium fredii NGR234." Journal of Pure and Applied Microbiology 16, no. 1 (2022): 593–605. http://dx.doi.org/10.22207/jpam.16.1.59.

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Escherichia coli DH10B has 1.1 kb ybdK gene which is responsible for encoding YbdK enzyme that possess a Gamma glutamyl cysteine synthetase activity. ybdK gene was ligated downstream of a constitutive derepressed lac promoter of a low copy number plasmid vector pBBR1MCS-2, giving rise to a recombinant plasmid pPAT. Sinorhizobium fredii NGR234 transformed with pPAT showed an augmented production of glutathione which in turn increased the production of cadmium sulphide nanoparticles to some extent. Also, a heterologous expression of YbdK in Sinorhizobium fredii NGR234 improved the oxidation stat
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Jiang, Guoqiao, and Hari B. Krishnan. "Sinorhizobium fredii USDA257, a Cultivar-Specific Soybean Symbiont, Carries Two Copies of y4yA and y4yB, Two Open Reading Frames That Are Located in a Region That Encodes the Type III Protein Secretion System." Molecular Plant-Microbe Interactions® 13, no. 9 (2000): 1010–14. http://dx.doi.org/10.1094/mpmi.2000.13.9.1010.

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Sinorhizobium fredii USDA257 forms nitrogen-fixing nodules on primitive soybean (Glycine max) cultivar Peking but fails to nodulate the improved cultivar McCall. Cultivar specificity is governed by a plasmid-borne locus, nolXBTUV. By DNA sequence analysis, we have identified two open reading frames, y4yA and y4yB, immediately downstream of nolX. Northern (RNA) blot analysis indicated that the expression of both y4yA and y4yB is inducible by isoflavonoids, and an intact copy of nolX is required. Two copies each of y4yA and y4yB are present in S. fredii USDA257, one on the sym plasmid (y4yAsp an
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Vinardell, José-María, Sebastián Acosta-Jurado, Susanne Zehner, et al. "The Sinorhizobium fredii HH103 Genome: A Comparative Analysis With S. fredii Strains Differing in Their Symbiotic Behavior With Soybean." Molecular Plant-Microbe Interactions® 28, no. 7 (2015): 811–24. http://dx.doi.org/10.1094/mpmi-12-14-0397-fi.

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Sinorhizobium fredii HH103 is a fast-growing rhizobial strain infecting a broad range of legumes including both American and Asiatic soybeans. In this work, we present the sequencing and annotation of the HH103 genome (7.25 Mb), consisting of one chromosome and six plasmids and representing the structurally most complex sinorhizobial genome sequenced so far. Comparative genomic analyses of S. fredii HH103 with strains USDA257 and NGR234 showed that the core genome of these three strains contains 4,212 genes (61.7% of the HH103 genes). Synteny plot analysis revealed that the much larger chromos
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Hashem, F. M., L. D. Kuykendall, S. E. Udell, and P. M. Thomas. "Phage susceptibility and plasmid profile analysis of Sinorhizobium fredii." Plant and Soil 186, no. 1 (1996): 127–34. http://dx.doi.org/10.1007/bf00035066.

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Krishnan, Hari B., Won-Seok Kim, Jeong Sun-Hyung, Kil Yong Kim, and Guoqiao Jiang. "Citrate Synthase Mutants of Sinorhizobium fredii USDA257 Form Ineffective Nodules with Aberrant Ultrastructure." Applied and Environmental Microbiology 69, no. 6 (2003): 3561–68. http://dx.doi.org/10.1128/aem.69.6.3561-3568.2003.

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ABSTRACT The tricarboxylic acid (TCA) cycle plays an important role in generating the energy required by bacteroids to fix atmospheric nitrogen. Citrate synthase is the first enzyme that controls the entry of carbon into the TCA cycle. We cloned and determined the nucleotide sequence of the gltA gene that encodes citrate synthase in Sinorhizobium fredii USDA257, a symbiont of soybeans (Glycine max [L.] Merr.) and several other legumes. The deduced citrate synthase protein has a molecular weight of 48,198 and exhibits sequence similarity to citrate synthases from several bacterial species, incl
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Jiao, Jian, Li Juan Wu, Biliang Zhang, et al. "MucR Is Required for Transcriptional Activation of Conserved Ion Transporters to Support Nitrogen Fixation of Sinorhizobium fredii in Soybean Nodules." Molecular Plant-Microbe Interactions® 29, no. 5 (2016): 352–61. http://dx.doi.org/10.1094/mpmi-01-16-0019-r.

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To achieve effective symbiosis with legume, rhizobia should fine-tune their background regulation network in addition to activating key genes involved in nodulation (nod) and nitrogen fixation (nif). Here, we report that an ancestral zinc finger regulator, MucR1, other than its paralog, MucR2, carrying a frameshift mutation, is essential for supporting nitrogen fixation of Sinorhizobium fredii CCBAU45436 within soybean nodules. In contrast to the chromosomal mucR1, mucR2 is located on symbiosis plasmid, indicating its horizontal transfer potential. A MucR2 homolog lacking the frameshift mutati
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Brom, Susana, Lourdes Girard, Alejandro García-de los Santos, Julio M. Sanjuan-Pinilla, José Olivares, and Juan Sanjuan. "Conservation of Plasmid-Encoded Traits among Bean-Nodulating Rhizobium Species." Applied and Environmental Microbiology 68, no. 5 (2002): 2555–61. http://dx.doi.org/10.1128/aem.68.5.2555-2561.2002.

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ABSTRACT Rhizobium etli type strain CFN42 contains six plasmids. We analyzed the distribution of genetic markers from some of these plasmids in bean-nodulating strains belonging to different species (Rhizobium etli, Rhizobium gallicum, Rhizobium giardinii, Rhizobium leguminosarum, and Sinorhizobium fredii). Our results indicate that independent of geographic origin, R. etli strains usually share not only the pSym plasmid but also other plasmids containing symbiosis-related genes, with a similar organization. In contrast, strains belonging to other bean-nodulating species seem to have acquired
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Ramakrishnan, Neela, R. K. Prakash, and Alan G. Atherly. "Conservation of IS66 homologue of octopine Ti plasmid DNA in Rhizobium fredii plasmid DNA." Plant Molecular Biology 7, no. 3 (1986): 177–88. http://dx.doi.org/10.1007/bf00021329.

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Dissertations / Theses on the topic "Plasmi freddi"

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Callegari, Andrea. "Produzione e caratterizzazione di acqua attivata mediante plasmi freddi atmosferici per applicazioni in agricoltura." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/19708/.

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This thesis is concerned with the production and characterization of PAW and its application to promote seeds germination. Two low temperature plasma devices operating at atmospheric pressure will be compared: an RF capacitively coupled source, COST Reference Microplasma Jet and another jet based on a DBD configuration, thus named DBD jet. After plasma treatments, variations of physicochemical properties induced in PAW, such as dissolved oxygen content, electrical conductivity, pH and concentrations of the main reactive species, were measured. Finally, the effects of the resulting solutions
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PIFERI, CECILIA. "Cold plasmas for air purification and sanitation." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2023. https://hdl.handle.net/10281/402359.

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È comunemente accettato che il cambiamento climatico sia dovuto ad un effetto antropico. Gli agenti inquinati sono sicuramente responsabili del peggioramento della qualità della vita umana ed è necessario trovare una soluzione. Una importante classe di inquinati è quella dei Composti Organici Volatili (VOC). Molti di questi composti sono classificati come cancerogeni o possibili cancerogeni per le persone, oltre al fatto che possono causare danni a lungo termine sull'ambiente. Nonostante questi problemi, i VOC sono necessari nelle vernici di pareti o arredi, nei trattamenti dei tessuti e sono
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Gorinati, Camilla. "Caratterizzazione funzionale di sorgenti plasma di non equilibrio a pressione atmosferica per l’eradicazione di biofilm batterici e l’inattivazione di spore." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.

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Durante la mia attività di tesi mi sono focalizzata sulla caratterizzazione funzionale di una sorgente plasma surface Dielectric Barrier Discharge (sDBD) impiegata per l’inattivazione di spore batteriche di Geobacillus stearothermophilus, e per l’eradicazione di biofilm batterici di Staphylococcus aureus e Pseudomonas aeruginosa. Durante la prima attività è stata compiuta la caratterizzazione elettrica della sorgente sDBD e sono state condotte analisi di temperatura all’interno del volume di trattamento della sorgente. In seguito sono stati eseguiti test biologici per dimostrare l’efficacia d
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Motta, Valentina. "Messa a punto di processi assistiti da plasmi freddi a pressione atmosferica per la sintesi in volo di nanoparticelle e la codeposizione di film polimerici nanostrutturati per applicazioni biomedicali." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.

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Il lavoro presentato riguarda la progettazione e messa a punto di un set up sperimentale assitito da plasmi atmosferici di non equilibrio per la sintesi in volo di nanoparticelle (NPs) di argento (Ag) e la simultanea codeposizione di coating polimerici nanostrutturati su substrati utilizzati per applicazioni biomedicali. Dapprima, le attività sperimentali hanno investigato la possibilità di sintetizzare in liquido NPs di Ag, sottoponendo una soluzione acquosa contenente il sale precursore al trattamento plasma effettuato mediante sorgente Corona Jet. Le analisi UV-VIS dei colloidi ottenuti han
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Amadori, Raul. "Trattamenti sanificanti a freddo: ozono e plasma freddo a confronto." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2021.

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Da parte dei consumatori si sta assistendo ad un aumento della domanda relativa agli alimenti minimamente trasformati ed alla produzione di alimenti sicuri e di alta qualità. Di conseguenza, le tecnologie di trasformazione non termica possono essere dei metodi alternativi per la conservazione di alimenti e per ridurre gli aspetti negativi sul profilo nutrizionale. Tra queste, l’ozono e il plasma freddo sono classificate tecnologie non termiche in via di sviluppo. Essendo tecnologie non termiche non si basano sulle alte temperature, di conseguenza non portano alterazioni significative sulla
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Randi, Dario. "Plasma freddo atmosferico: potenzialità e criticità dell'utilizzo nel settore alimentare." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/20724/.

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Il plasma freddo, utilizzato in passato principalmente in campo medico, ha recentemente attirato una notevole attenzione come nuova tecnologia non termica per la decontaminazione dei prodotti alimentari. Si tratta di una tecnologia non termica, a secco, ecologica e, nella maggior parte dei casi, rappresenta una buona soluzione in termini di costo-efficacia che può integrare o sostituire altre tecnologie. Il plasma freddo ha mostrato risultati promettenti in termini di decontaminazione di vari microrganismi, muffe e micotossine e virus e di inattivazione enzimatica nei prodotti alimentari. In
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Min, Rui. "Caratteristiche qualitative degli alimenti in seguito a trattamento con plasma freddo." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.

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Il plasma freddo è una tecnologia non termica emergente che ha mostrato interessanti risultati nel settore alimentare riguardo all’inattivazione microbica, sia di specie degradative che di patogeni, di virus ed enzimi degradativi. La sua applicazione, tuttavia, non è stata ancora approvata in Europa per l’utilizzo sugli alimenti, mentre viene applicata a livello industriale sui materiali di imballaggio alimentare. Tra i vari aspetti che necessitano di ulteriori approfondimenti è importante considerare l’effetto sulle caratteristiche qualitative e nutrizionali dei prodotti alimentari. La prese
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Gagliardi, Eleonora. "Effetto del trattamento con plasma freddo sulla shelf life di filetti di orata." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2022.

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Il plasma freddo è una tecnologia emergente di sanificazione, che negli ultimi anni è stata implementata per estendere la durata di conservazione degli alimenti. I prodotti ittici sono tra i principali costituenti delle diete alimentari, importanti per il loro contenuto in vitamine, proteine e altri costituenti essenziali come gli acidi grassi polinsaturi. La principale problematica legata a questa matrice è la rapida perdita di freschezza e di qualità. Lo scopo di questo studio è valutare l’applicazione del plasma freddo (CP) come tecnologia non termica di conservazione, per prolungare la she
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Scapinello, Marco. "Studio di processi al plasma freddo a pressione atmosferica per il trattamento delle fibre tessili." Doctoral thesis, Università degli studi di Padova, 2012. http://hdl.handle.net/11577/3422496.

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The main goals of my thesis project were to study, characterize and optimize the interaction of different atmospheric plasmas with textile materials (wool and cotton), to determine the effects of such interactions on the treated materials and to correlate them with the specific experimental conditions used. This thesis deals with the application of non-thermal plasmas to textile fibers and materials to achieve desired effects and properties such as anti-shrinking, anti-felting, wetting and the activation for wet finishing. The analysis of the plasma processed gas was performed by FT-IR and AP
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Castellucci, Matteo. "Progettazione, sviluppo e caratterizzazione di sorgenti di plasma freddo a pressione atmosferica per la deposizione di coating barriera organici-inorganici su substrati polimerici." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.

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Negli ultimi anni la tecnologia dei plasmi di non equilibrio ha suscitato interesse in ambito industriale grazie alla sua economicità, eco-sostenibilità e scalabilità. Nel mondo del packaging questa tecnologia, ancora in via di sviluppo, ha un ruolo sempre di maggior importanza in quanto permette di depositare coating a bassa permeabilità sui substrati polimerici di interesse. Rispetto ad alcune tecniche tradizionali il plasma non richiede alte temperature di processo e permette di ridurre i tempi caratteristici di processo. Questo elaborato di tesi si focalizza sulla progettazione ed ottimizz
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Book chapters on the topic "Plasmi freddi"

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Hashem, F. M., L. D. Kuykendall, S. E. Udell, and P. M. Thomas. "Phage susceptibility and plasmid profile analysis of Sinorhizobium fredii." In Current Issues in Symbiotic Nitrogen Fixation. Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-011-5700-1_18.

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Cutiño, Ana María, María del Carmen Sánchez-Aguilar, José Enrique Ruiz-Sáinz, María del Rosario Espuny, Francisco Javier Ollero, and Carlos Medina. "A Novel System to Selective Tagging of Sinorhizobium fredii Symbiotic Plasmids." In Host-Pathogen Interactions. Springer US, 2024. http://dx.doi.org/10.1007/978-1-0716-3617-6_17.

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Renger-Patzsch, Albert. "Tierphotos mit Meyer-Plasmat." In Die Freude am Gegenstand. Wilhelm Fink Verlag, 2010. http://dx.doi.org/10.30965/9783846748732_005.

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Barnouw, Erik. "Plastic Years." In Tube of Plenty. Oxford University PressNew York, NY, 1990. http://dx.doi.org/10.1093/oso/9780195064834.003.0003.

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Abstract In 1945, as peace came, it was possible to discern an explosive set of circumstances. Electronic assembly lines, freed from production of electronic war matériel, were ready to turn out picture tubes and television sets. Consumers, long confronted by wartime shortages and rationing, had accumulated savings and were ready to buy. Manufacturers of many kinds, ready to switch from armaments back to consumer goods, were eager to advertise. The situation awaited a catalyst, a signal. It came with surprising suddenness.
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"Plasticity And Elasticity In Freud’S BEYOND THE PLEASURE PRINCIPLE." In Plasticity, edited by Tyler M. Williams. Edinburgh University Press, 2022. http://dx.doi.org/10.3366/edinburgh/9781474462112.003.0023.

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Because he introduces a non-plastic element in his definition of the plasticity of mental life—that is, elasticity—Freud ruins the possibility of thinking what he precisely wishes to think, the plastic coincidence between creation and destruction of form. The characterization of the death drive as elastic deprives it of its plastic power and of its capacity to resist the pleasure principle. If we are not able to prove that the destruction of form has and is a form, if form is always on the side of Eros and of pleasure, it becomes impossible to prove that there is anything beyond the pleasure p
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Gjermundsen, Vera Maria. "Creative Fungus: On Fredrik Værslev’s Mildew Paintings." In Ung Uro. Cappelen Damm Akademisk/NOASP, 2021. http://dx.doi.org/10.23865/noasp.127.ch13.

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Fredrik Værslev’s Mildew Paintings cannot be defined as paintings in the conventional sense. They are the result of mildew growth developing over the course of a year on canvases stored inside humid plastic tubes. As such, their exact nature eludes us, not being straight-forward painterly objects, nor simple pieces of fungus-eaten material. This chapter aims to define the Mildew Paintings’ hybrid identity through the theories of interspecies entanglements of anthropologist Anna Tsing and Gilles Clément’s approach to what he refers to as the third landscape in urban gardening. The paintings are
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Rosas Lauro, Claudia. "De pasiones y redenciones : una introducción al estudio histórico del odio y el perdón en el Perú." In El odio y el perdón en el Perú: siglos XVI al XXI. Pontificia Universidad Católica del Perú, 2023. http://dx.doi.org/10.18800/9789972428999.001.

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Esta publicación tiene su origen en la reflexión que suscitó una ponencia que presentamos al Segundo Congreso Internacional de Peruanistas en el Exterior, llevado a cabo en Sevilla en 2004. Se titulaba «Ni restitución a los indios, ni salvación a los españoles. Un documento sobre la influencia lascasiana en el Perú» y abordaba el problema de la restitución en el siglo XVI como un caso de reparación de daños en la historia. La idea fue tomando cuerpo hasta que se plasmó en una mesa titulada «Odio y perdón en la historia del Perú»2 , realizada en el marco del XXVI Congreso Latinoamericano de Psi
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Conference papers on the topic "Plasmi freddi"

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Markocsan, N., P. Fogarassy, D. Dehelean, A. Manescu, and F. Rustichelli. "Residual Stress Determination in Near-Net Shape Formed Specimens Obtained by Thermal Spraying." In ITSC2002, edited by C. C. Berndt and E. Lugscheider. Verlag für Schweißen und verwandte Verfahren DVS-Verlag GmbH, 2002. http://dx.doi.org/10.31399/asm.cp.itsc2002p0324.

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Abstract The aim of this work is to develop a finite element model that predicts the residual stresses in plasma sprayed parts formed on conical mandrels and removed by various means. The theoretical analyses and mathematical models are confirmed by X-ray diffraction measurements on plasma-sprayed zirconia samples freed from shaped mandrels by means of cooling, melting, and chemical dissolution. Based on test results, the mandrel-cooling removal method produced the highest internal stresses. Paper includes a German-language abstract.
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Corkum, P. B., and N. H. Burnett. "Multiphoton Ionization for the Production of X-Ray Laser Plasmas." In Short Wavelength Coherent Radiation: Generation and Applications. Optica Publishing Group, 1988. http://dx.doi.org/10.1364/swcr.1988.hilim225.

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In the long wavelength (or high intensity) limit, above threshold ionization (ATI) is primarily the result of the interaction of a newly freed electron with the laser field. A classical model of ATI predicts that the energy of a newly released electron can be controlled by varying the laser wavelength and polarization. Similar predictions are made by Keldysh-style theories. Measurements, performed using both linearly and circularly polarized picosecond 10 μm pulses, confirm these conclusions. Cold, high-Z plasmas for recombination XUV lasers can be produced by multiphoton ionization with linea
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Fujimoto, T., B. Djuricic, K. Tanoue, Y. Fukushima, and H. Yamazaki. "CHANGES IN ENZYMATIC ACTIVITIES IN BRAIN CAPILLARY ENDOTHELIAL CELLS INJURED BY PLATELET AGGREGATION IN VIVO." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643368.

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We have reported cerebrovascular injuries induced by platelet aggregation in vivo. Appearance of vacuoles in endothelial cells and eventual deendothelialization are characteristic in large cerebral arteries (Stroke, 16:245, 1985). Minor changes are observed in brain capillaries, but disturbances of blood-brain barrier (BBB) are seen. To analyse changes in BBB, enzymatic activities in capillary endothelial cells before and after ADP-induced platelet aggregation in vivo were investigated.80 mg/kg of ADP was injected through a catheter into the right internal carotid artery of 32 rabbits. One hr
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Green, W., B. Kerff, V. Jacobs, D. Dohogne, and F. Duerr. "REDUCING STRAY LIGHT IN OUTDOOR LUMINAIRES." In CIE 2023 Conference. International Commission on Illumination, CIE, 2023. http://dx.doi.org/10.25039/x50.2023.po056.

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Light pollution is increasing at a rate between 6-10% each year worldwide, faster than population growth or GDP increase. This suggests that the growing market for decorative outdoor luminaires contributes to the problem. Stray light in outdoor LED luminaires is analysed using the FRED raytracing software. Fresnel reflections are shown to be a large contributor to upward light, especially from protective plastic covers. Additionally, up to 0.5% of the lamp flux may be scattered due to these covers. This study shows how this light escapes as ULOR, how to look for it in a luminaire design, and p
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Exner, T. "CONCENTRATION DEPENDENCE OF ACTIVATION OF ACARBOXYPROTEIN C BY THE CONTORTRIX ACTIVATOR." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1644301.

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The protein C activator in Southern Copperhead (Agkistrodon Contortrix Contortrix) venom was isolated by sequential chromatographies on SP�Sephadex, Con A Sepharose and hydroxylapatite. It was found to be a single chain glycoprotein with an apparent molecular weight of 36,000 and an enzymatic specificity on chromogenic substrates resembling kallikein.This "contortrix activator" was used in a solid-phase immunochromometric assay (ICMA) for functional protein C in which heterologous antibody against protein C was passively coated onto microtitre wells and used to immoblize protein C. This was th
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