3,402 research outputs found
Erosiebestendigheid van gras op klei taluds
No full textExperimenteel onderzoek naar de erosiebestendigheid van gras op klei. Proeven in de stroomgoot in Lith op de sterkte van een grasmat
Gras- und Kleesaaten, Gewinnung und Handel in Dänemark, Grossbritannien und Irland.
No full text[Pt. 1] issued separately as Hollmann. Gras- und Kleesamengewinnung in Dänemark, Stück 19 of Berichte über Land- und Forstwirtschaft im Ausland.[Pt. 1] Gras- und Kleesamengewinnung in Dänemark. Von dr. Hollmann.--[Pt. 2] Klee- und Grassaaten, Gewinnung und Handel in Grossbritannien und Irland. Von dr. Skalweit.Mode of access: Internet
Le origini dell’Ausonio I
No full textIl contributo riesamina il complesso culturale del c.d. Ausonio I dell'età del bronzo recente (XIII-metà XII sec. a.C.), identificato a Lipari (ME) da Luigi Bernabò Brea e Madeleine Cavalier, e ne evidenzia le molteplici potenzialità informative, in particolare al fine di definire indicatori archeologici relativi a forme organizzate (e dall'impatto traumatico) di mobilità umana
Tracking and orbit determination performance of the GRAS instrument on MetOp-A
No full textThe global navigation satellite system receiver for atmospheric sounding (GRAS) on MetOp-A is the first European GPS receiver providing dual-frequency navigation and occultation measurements from a spaceborne platform on a routine basis. The receiver is based on ESA’s AGGA-2 correlator chip, which implements a high-quality tracking scheme for semi-codeless P(Y) code tracking on the L1 and L2 frequency. Data collected with the zenith antenna on MetOp-A have been used to perform an in-flight characterization of the GRAS instrument with focus on the tracking and navigation performance. Besides an assessment of the receiver noise and systematic measurement errors, the study addresses the precise orbit determination accuracy achievable with the GRAS receiver. A consistency on the 5 cm level is demonstrated for reduced dynamics orbit solutions computed independently by four different agencies and software packages. With purely kinematic solutions, 10 cm accuracy is obtained. As a part of the analysis, an empirical antenna offset correction and preliminary phase center correction map are derived, which notably reduce the carrier phase residuals and improve the consistency of kinematic orbit determination results.Delft Institute of earth Observation and Space SystemsAerospace Engineerin
A Madeleine Cavalier / a cura di Maria Bernabò Brea, Massimo Cultraro, Michel Gras... [et al.]. - Naples : Centre Jean Bérard, 2018 (Collection du Centre Jean Bérard, 49)
No full textInternational audienc
A Madeleine Cavalier / a cura di Maria Bernabò Brea, Massimo Cultraro, Michel Gras... [et al.]. - Naples : Centre Jean Bérard, 2018 (Collection du Centre Jean Bérard, 49)
No full textInternational audienc
A Madeleine Cavalier / a cura di Maria Bernabò Brea, Massimo Cultraro, Michel Gras... [et al.]. - Naples : Centre Jean Bérard, 2018 (Collection du Centre Jean Bérard, 49)
No full textInternational audienc
S-GRAS score for prognostic classification of adrenocortical carcinoma: an international, multicenter ENSAT study
No full textObjective
Adrenocortical carcinoma (ACC) has an aggressive but variable clinical course. Prognostic stratification based on the European Network for the Study of Adrenal Tumours stage and Ki67 index is limited. We aimed to demonstrate the prognostic role of a points-based score (S-GRAS) in a large cohort of patients with ACC.
Design
This is a multicentre, retrospective study on ACC patients who underwent adrenalectomy.
Methods
The S-GRAS score was calculated as a sum of the following points: tumour stage (1-2 = 0; 3 = 1; 4 = 2), grade (Ki67 index 0-9% = 0; 10-19% = 1; ≥20% = 2 points), resection status (R0 = 0; RX = 1; R1 = 2; R2 = 3), age (<50 years = 0; ≥50 years = 1), symptoms (no = 0; yes = 1), and categorised, generating four groups (0-1, 2-3, 4-5, and 6-9). Endpoints were progression-free survival (PFS) and disease-specific survival (DSS). The discriminative performance of S-GRAS and its components was tested by Harrell's Concordance index (C-index) and Royston-Sauerbrei's R2D statistic.
Results
We included 942 ACC patients. The S-GRAS score showed superior prognostic performance for both PFS and DSS, with best discrimination obtained using the individual scores (0-9) (C-index = 0.73, R2D = 0.30, and C-index = 0.79, R2D = 0.45, respectively, all P < 0.01vs each component). The superiority of S-GRAS score remained when comparing patients treated or not with adjuvant mitotane (n = 481 vs 314). In particular, the risk of recurrence was significantly reduced as a result of adjuvant mitotane only in patients with S-GRAS 4-5.
Conclusion
The prognostic performance of S-GRAS is superior to tumour stage and Ki67 in operated ACC patients, independently from adjuvant mitotane. S-GRAS score provides a new important guide for personalised management of ACC (i.e. radiological surveillance and adjuvant treatment)
Di alcuni reperti dall'antica Bithia (Torre di Chia-Sardegna)
No full textGiovanni Tore, Michel Gras, Di alcuni reperti dall'antica Bithia (Torre di Chia-Sardegna), p. 51-94.
In seguito ad un intervento d'urgenza da parte della Soprintendenza alle Antichità, effettuato sulla spiaggia dell'odierna località di Torre di Chia (Domus de Maria-Cagliari), nel sito dell'antica città di Bithia, nella primavera del 1974, si sono rinvenute alcune tombe di vario rito, fra cui due a incinerazione con fittili fenicio-punici e in bucchero etrusco, oltre armi in ferro. L'esame congiunto dei pezzi indica per la prima una datazione oscillante fra il 620 e il 580 a.C, con la possibilità per alcuni fittili fenicio-punici di scendere non oltre il 550 a.C, mentre per la seconda la kylix permette una cronologia attorno al 620 a.C. I reperti etruschi, di chiara provenienza ceretana, indicano il situarsi di Bithia corne scalo lungo la rotta marittima fra Cerveteri e Cartagine. I fittili fenicio-punici offrono interessanti spunti di precisazione cronologica e areale per alcune delle forme basiche della ceramica semitica in Occidente. Quelli, poi, della seconda tomba attestano nuove forme di taie produzione artigianale.Tore Giovanni, Gras Michel. Di alcuni reperti dall'antica Bithia (Torre di Chia-Sardegna). In: Mélanges de l'École française de Rome. Antiquité, tome 88, n°1. 1976. pp. 51-94
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