BiodegHL: Biodegradation half-life prediction from OPERA (OPEn saR App) models. 1.2.Other related models: No related models 1.3.Software coding the model: OPERA V1.02 OPERA (OPEn (quantitative) structure-activity Relationship Application) is a standalone free and open source command line application. It provides a suite of QSAR models to predict physicochemical properties and environmental fate...

MP: Melting point prediction from OPERA (OPEn saR App) models. 1.2.Other related models: No related models 1.3.Software coding the model: OPERA V1.02 OPERA (OPEn (quantitative) structure-activity Relationship Application) is a standalone free and open source command line application. It provides a suite of QSAR models to predict physicochemical properties and environmental fate of organic chemi...

VP: Vapor pressure prediction from OPERA (OPEn saR App) models. 1.2.Other related models: No related models 1.3.Software coding the model: OPERA V1.02 OPERA (OPEn (quantitative) structure-activity Relationship Application) is a standalone free and open source command line application. It provides a suite of QSAR models to predict physicochemical properties and environmental fate of organic chem...

This paper presents the tool OPERA currently under development in our team. It aims at giving the user an environment to parallelize problems described by systems of aane recurrence equations. The parallelization technique used in OPERA is based on a classical linear space-time transformation. Its objectives are to visualize the dependences of a problem (which can be quite complicated in the co...

Singing involves distinct respiratory kinematics (i.e. movements of rib cage and abdomen) to quiet breathing because of different demands on the respiratory system. Professional classical singers often advocate for the advantages of an active control of the abdomen on singing performance. This is presumed to prevent shortening of the diaphragm, elevate the rib cage, and thus promote efficient g...

It seems incredible that twelve volumes of medical works written in Morgagni's own handwriting should have been completely lost to sight until 1952, when Professor Adalberto Pazni, combing through the catalogues in the Laurenziana Library in Florence for the names of medieval doctors, should have discovered them by chance. How they came to be there is a story full of interest, a detective story...

OBJECTIVES It is acknowledged generally that professional contemporary commercial music (CCM) singers engage in supplementary employment ("the day job") to achieve and maintain a reliable living wage. In this paper, consideration is given to the impact of such nonperformance employment on CCM's sustainable vocal health. METHODS Collected data from a survey of 102 professional contemporary gig...

In the present paper, we report the results of an empirical study on the effects of cognitive load on operatic singing. The main aim of the study was to investigate to what extent a working memory task affected the timing of operatic singers' performance. Thereby, we focused on singers' tendency to speed up, or slow down their performance of musical phrases and pauses. Twelve professional opera...

An experiment was carried out in which eight bass/baritone singers were recorded while singing in both choral and solo modes. Together with their own voice, they heard the sound of the rest of the choir and a piano accompaniment, respectively. The recordings were analyzed in several ways, including computation of long-time-average spectra for each passage, analysis of the sound levels in the fr...

OBJECTIVES The aim of this study was to investigate and compare the roles of the accessory respiratory muscles, latissimus dorsi (LD), and sternocleidomastoid, in classical singing. METHODS Electromyography was used to record the activity of these muscles in six classically trained female singers carrying out a number of singing and nonsinging tasks. Movements of the chest and abdominal walls...