Search results for "SAM"
showing 10 items of 7385 documents
A Trisialoganglioside Containing a Sialyl α2-6 N-Acetylgalactosamine Residue Is a Cholinergic-Specific Antigen, Chol-1α1
1992
Cholinergic-specific antigens termed the Chol-1 family have been suggested to be of a ganglioside nature by Richardson et al. (J. Neurochem. 38, 1605-1614, 1982). Two molecular species of polysialogangliosides among bovine brain gangliosides were found to react with anti-Chol-1 alpha antiserum. One of them, Chol-1 alpha-a, was isolated and characterized as a trisialoganglioside containing the gangliotetraose backbone in which 1 mol of sialic acid was attached to each of the reducing end galactose, N-acetylgalactosamine and internal galactose residues, respectively. The chemical structure of Chol-1 alpha-a was determined for the first time, being as follows: IV3NeuAc III6NeuAc II3NeuAc-GgOse…
Effect of antibodies against cytochrome P-450 on demethylation and denitrosation of N-nitrosodimethylamine and N-nitrosomethylaniline.
1988
Rat liver microsomes which were induced either with ethanol or PB were incubated with NDMA or NMA. Formaldehyde generation and nitrite formation were measured as metabolic parameters for oxidative bioactivation and denitrosation, respectively. The influence of antiserum PB3a1 and PB22 containing antibodies against the corresponding cytochrome P-450 species on both metabolic functions was investigated. The results showed that the influence on formaldehyde production and denitrosation varied independently in that both parameters were either not affected, or influenced in an opposite way, or inhibited to a different degree. Especially remarkable was the 80% inhibition of formaldehyde generatio…
SUCCESSO E DECLINO DELLA SCUOLA GENOVESIANA IN SICILIA SUL FINIRE DEL XVIII E IL PRINCIPIO DEL XIX SECOLO
2021
In the Sicily of late 18th century, during the harshest contraposition between viceroyal government and parliamentary baronage, the Genovesian school gains a great success on the island among scholars and academicians as well as ruling class. In this particular moment of Sicilian history, the theme of reforms is at the top of the political agenda and the thought of Genovesi and his scholars spurs projects to reform the old institutions of the Kingdom, to modernize agriculture, raise productivity and introduce a fairer taxation. The reputation of the Neapolitan school is so well-known that all the parties are inspired by Its economic and political proposals. Furthermore, the Crown and the ba…
Developments in Amphibian Parental Care Research : History, Present Advances, and Future Perspectives
2020
Despite rising interest among scientists for over two centuries, parental care behavior has not been as thoroughly studied in amphibians as it has in other taxa. The first reports of amphibian parental care date from the early 18th century, when Maria Sibylla Merian went on a field expedition in Suriname and reported frog metamorphs emerging from their mother's dorsal skin. Reports of this and other parental behaviors in amphibians remained descriptive for decades, often as side notes during expeditions with another purpose. However, since the 1980s, experimental approaches have proliferated, providing detailed knowledge about the adaptive value of observed behaviors. Today, we recognize mo…
Internet Related Technologies in the auditing profession: A WOS bibliometric review of the past three decades and conceptual structure mapping
2022
Research on Internet-Related Technologies in the auditing profession has grown substantially over the past three decades; however, it is very fragmented. This study seeks to synthesize and provide a comprehensive overview of the literature. Using bibliometric techniques and content analysis, this study provides an exhaustive overview of the research on Internet-Related Technologies in the auditing profession. The study utilized bibliography from the Web of Science database spanning for three decades from 1990 to 2019. A total of 236 academic documents, written by 478 authors from 102 sources was retrieved and used for the analysis. HistCite and Biblioshiny in R were used to run the citation…
The effects of a subvention scheme for e-bikes on mode share and active mobility
2022
Hanne Beate Sundfør, Aslak Fyhri, The effects of a subvention scheme for e-bikes on mode share and active mobility, Journal of Transport & Health, Volume 26, 2022, 101403, ISSN 2214-1405, https://doi.org/10.1016/j.jth.2022.101403 (https://www.sciencedirect.com/science/article/pii/S2214140522000755) Introduction Previous studies show substantial mode share effects from e-bikes. E-bike owners cycle more and drive less car than they would without access to an e-bike. Support schemes for e-bikes exist in a number of countries, but knowledge about the effect of subsidies on active transport is limited. The aim of this study is to assess the mode change and active mobility effects of a subvention…
Prova tecnica e appello penale
2019
Affinché il giudice d’appello eserciti un controllo effettivo sulla razionalità delle argomentazioni scientifiche riportate in sentenza è indispensabile che s’instauri un contraddittorio tecnico efficace. A tal fine, come hanno statuito le Sezioni unite, la rinnovazione obbligatoria della prova dichiarativa (art. 603, comma 3° bis, c.p.p.) va estesa anche all’esame degli esperti. Tuttavia, il grande consesso ha lasciato fuori dai confini operativi del congegno talune ipotesi in cui, invece, parrebbe sufficiente il solo contraddittorio cartolare, facendo salvo il potere discrezionale del giudice di rinnovare l’istruzione, attorno al quale, come noto, si annidano incertezze interpretative di …
Identifying the Unknown Content of an Ancient Egyptian Sealed Alabaster Vase from Kha and Merit’s Tomb Using Multiple Techniques and Multicomponent S…
2020
This article highlights the multianalytical study of exuded liquid from an ancient Egyptian sealed alabaster vase by Master's students in an applied chemistry for cultural heritage course. Master students are introduced to the field of Archaeometry that see the collaboration of experts in different areas of research such as conservators, curators of museums, physicists, chemists, etc. The sample is a residue exuded on the linen strip sealing an ancient Egyptian alabaster vase (inventory number S.8448) from the collection of the Museo Egizio in Turin (Italy). The students start to plan the noninvasive investigation by X-ray fluorescence (XRF), transmission electron microscopy (TEM), and ener…
Themes within lecturers' views on the teaching of linear algebra
2019
Author's accepted manuscript (postprint). This is an Accepted Manuscript of an article published by Taylor & Francis in International Journal of Mathematical Education in Science and Technology on 25/09/2019, available online: http://www.tandfonline.com/10.1080/0020739X.2019.1668976. Available from 26/09/2020. This paper reports on themes that arose in an investigation of university lecturers’ views on the teaching of linear algebra. This focus on themes was the initial part of a study concentrating on four areas: What is important to teach in a first course in linear algebra? Are there teaching methods which are particularly suited for such a course? Are there tools that should/should not …
Computation of a few smallest eigenvalues of elliptic operators using fast elliptic solvers
2001
The computation of a few smallest eigenvalues of generalized algebraic eigenvalue problems is studied. The considered problems are obtained by discretizing self-adjoint second-order elliptic partial differential eigenvalue problems in two- or three-dimensional domains. The standard Lanczos algorithm with the complete orthogonalization is used to compute some eigenvalues of the inverted eigenvalue problem. Under suitable assumptions, the number of Lanczos iterations is shown to be independent of the problem size. The arising linear problems are solved using some standard fast elliptic solver. Numerical experiments demonstrate that the inverted problem is much easier to solve with the Lanczos…