1,721,044 research outputs found
Les premiers symboles musicaux chrétiens
No full texttraduction français de l'article paru dans l' Atlante storico della musica nel Medioev
À l’école de musique : une théorie utile à la pratique
No full textSintesi dell'evoluzione storica della teoria musicale dall'epoca tardo-antica al Basso Medioevo, con particolare attenzione alle trasformazioni nei contenuti della disciplina dovuti al mutamento dell'orizzonte pedagogico e didattico conseguente all'introduzione della scrittura musicale. Centrale in questo processo è il ruolo svolto da Guido d'Arezzo e dalla sua opera. Si tratta della traduzione in francese del prodotto hdl:11585/111052 del medesimo autore
Chant liturgique et politique impériale carolingienne
No full textSintesi documentata della introduzione in Francia del repertorio di canti liturgici in uso a Roma per volonta degli imperatori carolingi e di come la contaminazione di questo repertorio con gli usi gallicani diede origine al canto gregoriano, che per opera degli stessi imperatori e dei loro successori si diffuse in tutta Europa ponendo le basi della civiltà musicale eurpoea. Si tratta della traduzione in tedesco del prodotto hdl:11585/110991 dello stesso autore
CHROMOSOME AND GENOTYPE CHARACTERIZATION IN SOME RICE BIOTYPES SHOWING GRAIN SHATTERING
Full text linkRed rice (Oryza sativa var. silvatica L.) is a common weed in rice crop, very troublesome to control due to high shattering. The aim of the present research was to analyse the genome of some biotypes of red rice in order to promote innovatives methods for its control.
In the first year, morphological and karyotypical analysis of some phenotypically different red rice biotypes in comparison with the rice cultivar ‘Loto’ were carried out. The seeds of rice and red rice were sown in greenhouse and afterwards the root tips of the seedlings were employed for the cytological analysis. The chromosome preparations were made by the standard air-drying technique, after enzymatic maceration, and stained with a 4% Giemsa solution for 20 min., according to Fukui and Iijima’s method (1992).
The analysis, by means of a computerized chromosome image method (CHIA–EA), showed that in red rice various translocations occur, which always involve a chromosome of the first pair together with other elements of the set. Previous results clearly indicated that each red rice biotype is characterized by a specific translocation, showing a relationship among different phenotypes and karyotypes. It is important to note that in Oryza sativa one gene for shattering maps to the long arm of chromosome 1, which is always involved in the translocations. The project is divided into three phases: the field growing and observations, the laboratory analysis and the computer analysis. The first results that we have obtained support the proposed assumption. An increase in the dose of the genes frequently alters the phenotype, depending upon the effect of the genes involved.
In the second year, the research was based on the molecular analysis. Since the shattering gene is located on the long arm of the chromosome 1, which is involved in the translocation process, I have analyzed this genomic locus by both cytogenetic and molecular biology techniques.
The shattering character relies on the presence of a single-nucleotide polymorphism (SNP) which can explain about 70% of the non-shattering character associated to this gene whereby this SNP probably affects a regulatory region. In my experimental results, the CDS of the eight biotypes of Oryza sativa var. silvatica coincides with a rice genome presenting a high non- shattering character, except for the case of the qSH1-SNP, located outside the CDS, coinciding with the low non-shattering genome rice.
In the third year, in order to ascertain if the shattering gene is displaced, breaks or remains on chromosome 1, we made use of the FISH method. The FISH cytogenetic method is employed in order to identify specific sequences of nucleic acids in the chromosome. It represents a significant contribution to standard cytogenetic for the identification of chromosome numerical and structural anomalies. It led however to an encouraging result for two different biotypes: the discovery that the shattering gene does not undergo translocation. Other QTLs for shattering character were noticed on chromosomes 1, 3, 4, 7, 8 and 11, in other cultivated rice species which partially explain the shattering character, although the responsible gene was identified only in three of these QTLs: 1, 4 and 7.
The analysis of the involved genes of chromosomes 4 and 7 in our eight red rice biotypes has revealed that the QTLs found on these chromosomes are probably not involved in the shattering character.
These analysis provide a wide overview of a possible correlation between the different phenotypes of the eight biotypes, shattering level, karyotypic differences connected with a specific translocation for each biotype and the fact that both these translocations and the gene responsible for the shattering of the eight biotypes are always present in chromosome 1. The investigation of the relationship between the various translocations and the expression of the shattering gene would require further and more sophisticated analyses
La gioa nel cantare, la bellezza nel pregare. Canto e liturgia nelle chiese di rito orientale a Roma
No full textThe article is based on a research carried out in the Christian churches of eastern rite in Rome, which deals with the musical liturgies in use in the communities of immigrant citizens. The singing is entrusted above all to the celebrant and choir, while adapting to diaspora situations, must guarantee the best success of the rite.
From the audiovisual documentation and interviews with choir directors, priests and simple faithfuls, the role of the aesthetic dimension in praying has emerged
Morphological and karyotypical characterization of four biotypes of red rice (Oryza sativa subsp. Japonica var. sylvatica)
No full textThe present work relates to a morphological and karyotypical analysis of four phenotypically different weedy red rice biotypes in comparison with the cultivar Loto, used as control. A preliminary analysis, by means of a computerized chromosome image method (CHIA – EA), showed that in the red rice various traslocations occur which always involve a chromosome of the first pair together with other elements of the set (Sparacino et al., 2004). The results presented here clearly indicate that each red rice biotype is characterized by a specific traslocation, showing a relationship between different phenotypes and karyotypes
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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