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STUDIEN ZUM VORGANG DER WASSERSTOFFÜBERTRAGUNG 621HERSTELLUNG UND ELEKTROREDUKTIVE SPALTUNG EINIGER ARYLDISULFONSÄUREDERIVATE
1982
Abstract Benzene-disulfonylchlorides were converted to the corresponding dialkyl-and diphenylesters, N-alkyl-and N-aryl disulfonamides. The half-wave-potentials E1/2 1 and E1/2 2 were measured and the products obtained on potentiostatic fission at E1/2 1 were isolated and characterized. The electroreduction of benzene-1,4-disulfonic acid-diphenylester in methanol yields phenol in a quantity approximately corresponding to the current passed, but no corresponding quantity of sulfinic acid. In dry acetonitrile, benzene-1,4-disulfonic acid diesters and diamides undergo potentiostatic fission (at E1/2 1) in good chemical and current yields, giving the corresponding monosulfonate-sulfinic acid or…
Lithium Ion Recognition with Nanofluidic Diodes through Host-Guest Complexation in Confined Geometries
2018
[EN] The lithium ion recognition is receiving significant attention because of its application in pharmaceuticals, lubricants and, especially, in energy technology. We present a nanofluidic device for specific lithium ion recognition via host guest complexation in a confined environment. A lithium-selective receptor molecule, the aminoethyl-benzo-12-crown-4 (BC12C4-NH2), is designed and functionalized on single conical nanopores in polyethylene terephthalate (PET) membranes. The native carboxylic acid groups on the pore walls are covalently linked with the crown ether moieties and the process is monitored from the changes in the current voltage (I-V) curves. The B12-crown-4 moieties are kno…
Über die autoxydation ungesättigter verbindungen XII. Mitteilung. Über die co-autoxydation von linolsäuremethylester und dimethylbutadien
1960
Es wird uber die gemeinsame Autoxydation von Linolsauremethylester und Dimethylbutadien berichtet. Kinetische Versuche zeigen, das die Reaktionsgeschwindigkeit der Co-Autoxydation wesentlich hoher liegt, als nach der Spontanautoxydation der beiden Substanzen zu erwarten ware. Cu-II-katalysierte Versuche bestatigen, das beide Bestandteile co-autoxydieren. Auch die Gegenstromverteilung der Reaktionsprodukte zeigt, das Co-Autoxydationsprodukte gebildet werden. Es bestehen Analogien, aber auch Unterschiede zur Copolymerisation. Analytische Ergebnisse werden mitgeteilt. Methyl linoleate and dimethylbutadiene are autoxidized together. It is elucidated by kinetic investigations that the reaction r…
H-Point Standard Addition Method Applied to Voltammetry of Microparticles. Quantitation of Dyes in Pictorial Samples
2007
A solid-state electrochemical application of the H-point standard addition method (HPSAM) for quantifying two electroactive compounds, A, B, that produce strongly overlapped voltammetric peaks is described. It is based on peak current measurement in square-wave voltammograms recorded for solid samples containing a reference compound R, upon additions of a A- (or B-) containing standard compound. The method allows to the determination of the mass fraction of A and B by applying the H-point standard addition method to solid state voltammetry. The quotients between the currents measured at two selected potentials and the peak current of R vary linearly with the mass ratio of the added standard…
Current trends on subtotal petrosectomy with cochlear implantation in recalcitrant chronic middle ear disorders
2023
Objective. To establish the safety and effectiveness of subtotal petrosectomy with cochlear implantation in patients affected by chronic middle ear disorders to refractory to previous surgical treatments. Methods. A multicentre, retrospective study was conducted on patients affected by recalcitrant chronic middle ear disorders who underwent cochlear implantation in combi-nation with subtotal petrosectomy. Patients’ details were collected from databases of 11 Italian tertiary referral centres. Additionally, a review of the most updated literature was carried out. Results. 55 patients were included with a mean follow-up time of 44 months. Cholestea-toma was the most common middle ear recurren…
Psychometric Properties and a Preliminary Validation Study of the Italian Brief Version of the Communication Styles Inventory (CSI-B/I)
2020
People will typically develop a communication style that tends to be coherent with their own fundamental personality traits. The current debate on communication style acknowledges the construct of adaptive behavior as an appropriate area where to include both the strictly personal aspects and social learning and cultural assimilation, which translate into communicative style as a specific form of adaptation integrating the behavioral and personality perspectives. Due to the lack of instruments in the Italian psychometric scenario to assess communication styles, the present study included the translation and validation of the Italian short version of the Communication Styles Inventory (CSI-B…
CLIL teachers as materials designers
2014
Vieraskielinen sisällönopetus (CLIL), jossa kouluaineita opetetaan vieraalla kielellä, on kasvattanut suosiotaan varsinkin Euroopassa. Sisällön ja kielen oppimisen tulokset CLIL-opetuksessa ovat yleisesti hyviä, mutta menetelmä on opettajalle työläs pääasiassa siksi, että CLIL-materiaaleja on tuskin ollenkaan saatavilla. Sopivien materiaalien etsiminen, muokkaaminen ja valmistaminen on aikaa vievää ja voi vaatia erikoisosaamista. Materiaaleihin liittyvä tuki on onnistuneiden CLIL-ohjelmien edellytys. Tuki voi tarkoittaa materiaalien valmistamista, materiaalipankkien perustamista, materiaalien jakamisen tukemista tai opettajien kouluttamista materiaalien valmistuksessa. Tarvitaan tietoa pros…
Validation and Measurement Invariance of the Scale of Positive and Negative Experience (SPANE) in a Spanish General Sample
2020
Este artículo se encuentra disponible en la siguiente URL: https://www.mdpi.com/1660-4601/17/22/8359 Este artículo pertenece a la sección "Health behavior, chronic disease and health promotion". Well-being has been measured based on di erent perspectives in positive psychology. However, it is necessary to measure a ects and emotions correctly and to explore the independence of positive and negative a ect. This cross-sectional study adapts and validates the Scale of Positive and Negative Experience (SPANE) with a non-probabilistic sample of 821 Spanish adults. A confirmatory factor analysis confirmed two related factors with two correlated errors. The average variance extracted was 0.502 for…
Adaptation and Measurement Invariance by Gender of the Flourishing Scale in a Colombian Sample
2021
There is increasing interest in the study of flourishing as an indicator of subjective wellbeing. The objective herein was to adapt and study the psychometric properties of Diener’s Flourishing Scale (FS) among the Colombian population. Accordingly, a cross-sectional study was conducted with a non-probability sample of 1255 Colombian adults. The scale’s structure, invariance by gender, and convergent and concurrent validity were studied from a confirmatory perspective using structural equation models. The confirmatory factor analysis showed excellent fit indicators for the one-dimensional structure (CFI = 0.985, RMSEA = 0.039, SRMR = 0.020) as well as for the convergent (CFI = 0.909, RMSEA …
Pathogen safety of long-term treatments for bleeding disorders: still relevant to current practice
2013
Hemophilia defines a group of hereditary bleeding disorders: hemophilia A (deficiency of Factor VIII, FVIII), hemophilia B (deficiency of FIX), and para-hemophilia (deficiency of FV). These result from mutations in clotting factor genes. As in the large majority of bleeding disorders ([Table 1][1