Come cambia la fabbrica. Nuovi sistemi produttivi e professionalità: 1986-1992 vol. 1

Ricerca sui cambiamenti indotti dalle nuove tecnologie nella produzione e nell'organizzazione del lavoro con considerazioni sulle nuove mansioni e professionalità richieste con particolare riferimento all'area di Tecnocity.- Indice #7- Prefazione, Marcello Pacini #9- 1. Obiettivi e metodi della ricerca #17- 2. Il modello interpretativo generale #31- 3. L’evoluzione tecnologica dei settori esaminati. Una panoramica generale #65- 4. Tendenze generali delle tecnologie e del lavoro #151- 5. Fabbisogni di addestramento e formazione #169- 6. Conclusioni generali #18

Predictor Analysis in Radiofrequency Ablation of Benign Thyroid Nodules: A Single Center Experience

PURPOSE: To confirm the efficacy of ultrasound (US) guided radiofrequency ablation (RFA) in the treatment of benign thyroid nodules, we evaluated as primary outcome the technical efficacy and clinical success in a single center dataset. The secondary outcome was to find a correlation between nodules’ pre-treatment features and volume reduction rate (VRR) ≥75% at 12 months after RFA and during follow-up period. METHODS: This retrospective study included 119 consecutive patients (99 females, 20 males, 51.5 ± 14.4 years) with benign thyroid nodules treated in our hospital between October 2014 and December 2018 with a mean follow-up of 26.8 months (range 3–48). Clinical and US features before and after RFA were evaluated by a US examination at 1, 3, 6, 12 months and annually thereafter up to 48 months. RESULTS: The median pre-treatment volume was 22.4 ml; after RFA we observed a statistically significant volume reduction from the first month (11.7 ml) to the last follow-up (p 22.4 ml (HR 0.54, p 0.036) were found to be independent positive and negative predictors of VRR ≥75% respectively. One-month post RFA VRR ≥50% represented the best positive predictor of technical success. CONCLUSIONS: This study confirmed the efficacy of RFA in the treatment of benign thyroid nodules. In particular we show that by selecting macrocystic nodules smaller than 22.4 ml better long-term response can be achieved, which is predicted by an early shrinkage of the nodule

Microtomography developments on the ANATOMIX beamline at Synchrotron SOLEIL

The new ANATOMIX beamline at Synchrotron SOLEIL is dedicated to hard X-ray full-field tomography techniques. Operating in a range of photon energies from approximately 5 to 50 keV, it offers both parallel-beam projection microtomography and nanotomography using a zone-plate transmission X-ray microscope and thus covers a range of spatial resolution from 20 nm to 20 $\mu$m, expressed in terms of useful pixel size. Here we describe the microtomography instrumentation and its performance.Comment: Paper submitted for publication in the Proceedings of the 15th International Conference on X-Ray Microscopy (XRM 2020), 19--24 July 2020, Taipei, Taiwan, edited by D.-H. Wei and C.-M. Cheng and H.-W. Shiu and T.-H. Chuang, AIP Conf. Pro

Magnetic moments of short-lived nuclei with part-per-million accuracy: Towards novel applications of β\beta-detected NMR in physics, chemistry and biology

We determine for the first time the magnetic dipole moment of a short-lived nucleus with part-per-million (ppm) accuracy. To achieve this two orders of magnitude improvement over previous studies, we implement a number of innovations into our $\beta$-detected Nuclear Magnetic Resonance ($\beta$-NMR) setup at ISOLDE/CERN. Using liquid samples as hosts we obtain narrow, sub-kHz linewidth, resonances, while a simultaneous in-situ $^1$H NMR measurement allows us to calibrate and stabilize the magnetic field to ppm precision, thus eliminating the need for additional $\beta$-NMR reference measurements. Furthermore, we use ab initio calculations of NMR shielding constants to improve the accuracy of the reference magnetic moment, thus removing a large systematic error. We demonstrate the potential of this combined approach with the 1.1 s half-life radioactive nucleus $^{26}$Na, which is relevant for biochemical studies. Our technique can be readily extended to other isotopic chains, providing accurate magnetic moments for many short-lived nuclei. Furthermore, we discuss how our approach can open the path towards a wide range of applications of the ultra-sensitive $\beta$-NMR in physics, chemistry, and biology.Comment: re-submitte

Combining visible near-infrared spectroscopy and water vapor sorption for soil specific surface area estimation

Abstract The soil specific surface area (SSA) is a fundamental property governing a range of soil processes relevant to engineering, environmental, and agricultural applications. A method for SSA determination based on a combination of visible near‐infrared spectroscopy (vis‐NIRS) and vapor sorption isotherm measurements was proposed. Two models for water vapor sorption isotherms (WSIs) were used: the Tuller–Or (TO) and the Guggenheim–Anderson–de Boer (GAB) model. They were parameterized with sorption isotherm measurements and applied for SSA estimation for a wide range of soils (N = 270) from 27 countries. The generated vis‐NIRS models were compared with models where the SSA was determined with the ethylene glycol monoethyl ether (EGME) method. Different regression techniques were tested and included partial least squares (PLS), support vector machines (SVM), and artificial neural networks (ANN). The effect of dataset subdivision based on EGME values on model performance was also tested. Successful calibration models for SSATO and SSAGAB were generated and were nearly identical to that of SSAEGME. The performance of models was dependent on the range and variation in SSA values. However, the comparison using selected validation samples indicated no significant differences in the estimated SSATO, SSAGAB, and SSAEGME, with an average standardized RMSE (SRMSE = RMSE/range) of 0.07, 0.06 and 0.07, respectively. Small differences among the regression techniques were found, yet SVM performed best. The results of this study indicate that the combination of vis‐NIRS with the WSI as a reference technique for vis‐NIRS models provides SSA estimations akin to the EGME method

Come cambia la fabbrica. Nuovi sistemi produttivi e professionalità: 1986-1992 vol. 2

Rassegna dei mutamenti organizzativi e produttivi dei principali settori industriali italianie in modo particolare nell'area di Tecnocity a seguito dell'innovazione tecnologica e nuove professionalità richieste.- Indice #7- Settore Carta Stampa Editoria #9- Settore Meccanica #77- Settore Elettronica #241- Settore Gomma #351- Settore Materie Plastiche #395- Settore Tessile #45

Migration of implanon contraceptive implant into the pulmonary artery

A 16-year-old girl had a subdermal contraceptive implant (Implanon-NCT®) inserted 22 months earlier that was no longer palpable. The patient used to “play” with the device to check that it was well positioned in her arm. Chest X-ray and computed tomography revealed that the implant has migrated into a pulmonary artery. Complete vascular retraction around it precluded any endovascular retrieval and the patient refused surgery. Focal pulmonary artery thrombosis usually has no clinical significance but may lead to severe consequences in patients with impaired cardiopulmonary function. Consequently, percutaneous or surgical retrieval of migrated intravascular devices is recommended and is more likely to be successful when migration is recent [1]. Only 25% of patients with implant migration report symptoms, including dyspnea and chest discomfort. Identifying risk factors for migration as in our patient may be therefore important to achieve a closer control in some patients and to increase the success rate of an early percutaneous retrieval in case of migration