Search results for "stil"
showing 10 items of 1452 documents
Über die schnelle Trennung des Rutheniums von den Spaltprodukten des Urans
1971
Optimization of the coagulation–flocculation treatment: influence of rapid mix parameters
1999
[EN] Turbid waters, containing suspended and colloidal particles, are normally treated by coagulation–flocculation followed by clarification; the process usually consists of the rapid dispersal of a coagulant into the raw water followed by an intense agitation commonly defined as rapid mixing. Rapid mixing is influenced by chemical and physical parameters and the final result of the whole treatment depends on this step. The study focused on the most important parameters of rapid mix design: velocity gradient and rapid mix time. Wastewaters from a tannery processing stored ovine hides were treated with aluminium(III) or iron(III) salts. Experimental results indicate that rapid mix time has a…
Contribución al conocimiento de la flora alóctona abulense (Ávila, España)
2012
Se aportan datos corológicos de catorce plantas vasculares presentes en la provincia de Ávila (España). De ellas, cinco son primeras citas provinciales: Chamaesyce prostrata (Aiton) Small, Conyza sumatrensis (Retz.) E. Walker, Helianthus tuberosus L., Melia azedarach L. y Panicum miliaceum L. El resto de plantas vasculares no son muy conocidas en la zona. Para cada una de ellas se aporta información florística y bibliográfica.SUMMARY: Chorological data concerning fourteen species of invasive vascular plants in Ávila province (Spain) are shown. Among them, we must highlight Chamaesyce prostrata (Aiton) Small, Conyza sumatrensis (Retz.) E. Walker, Helianthus tuberosus L., Melia azedarach L. a…
Determination of cyanide by a flow injection analysis-atomic absorption spectrometric method
1999
A new flow injection analysis (FIA) procedure is proposed for the indirect atomic absorption spectrometric determination of cyanide. The FIA manifold is based on the insertion of the sample into a distilled water carrier, then the sample flows through a solid-phase reactor filled with silver iodide entrapped in polymeric resin beads. The calibration graph is linear over the range 0.2-6.0 mg l-1 of cyanide (correlation coefficient 0.9974), the detection limit is 0.1 mg l-1, the sample throughput is 193 h-1 and the RSD is 0.8%. The method is simple, quick and more selective than other published FIA procedures. The reproducibility obtained by using different solid-phase reactors and solutions …
Evaluation of vapor mass transfer in various membrane distillation configurations: an experimental study
2011
Vapor mass transfer phenomena in four different membrane distillation (MD) configurations were examined through a self-built laboratory scale experimen- tal apparatus: Air Gap MD, Sweeping Gas MD, Vacuum Sweeping Gas MD and Vacuum MD. Vapor fluxes were measured and compared with those predicted by various models, showing that MD performance under usual processing conditions is severely controlled by the permeate side resistance to mass transfer.
Reactions in Spain to the expulsion of the Jesuits from France
1996
Los sucesos que afectaron a los jesuitas en Portugal y Francia fueron seguidos con curiosidad e interés en los ambientes cultos españoles. A través de la correspondencia cruzada entre Gregorio Mayans y diversos personajes, entre los que se encontraban el obispo Asensio Sales, el bibliotecario real Martínez Pingarrón, y el jesuita P. Juan Bautista Gener, y otros, se analizan las actitudes de simpatía o antipatía que suscitaban las medidas antijesuíticas y la gestación de un ambiente proclive a la expulsión. Así mismo, se trata de la repercusión de la consulta del Consejo de Castilla sobre los jesuitas franceses exiliados en España, con referencia al eco que produjo en el Provincial de Aquita…
Deux plaidoyers mystiques en faveur du « no pensar nada » : le Troisième Abécédaire spirituel (1527) et la Loi d'amour (1530) de Francisco de Osuna
2017
Two mystical pleas for the «no pensar nada»: the Third Spiritual alphabet (1527) and the Law of love (1530) by Francisco de Osuna A mystic principle rooted in negative theology (from Pseudo-Dionysius the Areopagite to Saint John of the Cross), the « no pensar nada » ("thinking-nothing") was strongly defended by Franciscan preacher and spiritual guide of the « Recollection », Francisco de Osuna, in a context of spiritual polemics marked by the condemnation of Toledo's « Alumbrados » ("the Illuminated") in 1525. Despite the Holy Office's strong pressure, and the threat of censorship, Osuna openly advocated the « thinking-nothing » principle in a chapter of the Third Spiritual Alphabet (1527),…
Franču jaunā viļņa un videoblogeru stilistikas salīdzinošā analīze
2019
Bakalaura darba tēma ir franču jaunā viļņa un videoblogeru stilistikas salīdzinošā analīze. Pētījuma mērķis ir noskaidrot franču jaunā viļņa un videblogeru stilistiskās iezīmes. Darba problēma ir franču jaunā viļņa stilistiskās iezīmes videoblogeru saturā. Teorētiskajā daļā tiek aplūkoti kino valodas elementi, kino naratīvs, autorkino un franču jaunais vilnis, kā arī Cinéma-vérité un videoblogošana. Papildus teorijai sniegta informācija par Keisija Neistata, Bena Brauna, Romana Atvuda un Fēliksa Arvīda Ulf Šelberga biogrāfiju. Pētījums tiek veikts, izmantojot semiotisko un naratīva analīzi. Bakalaura darba pētnieciskais lauks aptver Keisija Neistata, Bena Brauna, Romana Atvuda un Fēliksa Ar…
Characterization of five fungal endophytes producing Cajaninstilbene acid isolated from pigeon pea [Cajanus cajan (L.) Millsp].
2011
Five fungal endophytes (K4, K5, K6, K9, K14) producing Cajaninstilbene acid (CSA, 3-hydroxy-4-prenyl-5-methoxystilbene-2-carboxylic acid) were isolated from the roots of pigeon pea [Cajanus cajan (L.) Millsp.]. CSA is responsible for the prominent pharmacological activities in pigeon pea. The amount of CSA in culture solution varied among the five fungal endophytes. K4 produced the highest levels of CSA (1037.13 µg/L) among the endophytes tested after incubation for five days. Both morphological characteristics and molecular methods were used for species identification of fungal endophytes. The five endophytic isolates were characterized by analyzing the internal transcribed spacer (ITS) rR…
TTAS a New Stilbene Derivative that Induces Apoptosis in Leishmania Infantum
2012
Leishmania parasites are able to undergo apoptosis (programmed cell death), similarly to mammalian cells. Recently it was demonstrated in vitro the anti-leishmanial effect of some natural and synthetic stilbenoids including resveratrol and piceatannol. In this study we evaluated the Leishmanicidal activity of a pool of stilbene derivatives which had previously shown high apoptotic efficacy against neoplastic cells. All the compounds tested were capable to decrease the parasite viability in a dose-dependent manner. Trans-stilbenes proved to be markedly more effective than cis-isomers. This was different from that observed in tumor cells in which cis-stilbenes were more potent cytotoxic agent…