<i>Dialogare</i>: compendio di chimica

This compendium is aimed at all students who, in the transition from secondary school to university, have to face a chemistry exam in their course of study and want to fill their knowledge gaps or, simply, to review the minimum topics of the subject, before deepening them during university courses. By studying and reviewing the various topics, grouped in parts and units, the reader will therefore have the possibility to access the fundamental notions that make up “General Chemistry”. The end-of-chapter exercises are an additional aid allowing students to carry out a self-assessment and, possibly, to identify particularly “difficult” topics to be further studied

Dialogare: compendio di chimica

This compendium is aimed at all students who, in the transition from secondary school to university, have to face a chemistry exam in their course of study and want to fill their knowledge gaps or, simply, to review the minimum topics of the subject, before deepening them during university courses. By studying and reviewing the various topics, grouped in parts and units, the reader will therefore have the possibility to access the fundamental notions that make up “General Chemistry”. The end-of-chapter exercises are an additional aid allowing students to carry out a self-assessment and, possibly, to identify particularly “difficult” topics to be further studied

Digital Technologies to Redesign Automatic Machines with a Human-Centric Approach: Application in Industry

Human factors integration is definitely a transdisciplinary and urgent matter in modern factories. Despite the great surge in factory automation in recent years, human-machine interaction is still a crucial aspect and companies need to take care of the workers' wellbeing and performance to enhance the overall system quality and productivity. Nevertheless, ergonomics is poorly considered during the design of complex industrial systems, such as automatic machinery, especially for the lack of practical methodologies and guidelines to promote human factors from the early stages of design or redesign. To overcome this issue, this work proposes a transdisciplinary approach to redesign automatic machinery in compliance with factory ergonomics, using a combination of digital technologies (e.g., digital human simulation, human physiological data monitoring). The paper defines a structure method and related tools to apply a human-centric approach to industrial cases and their validation of a real case, concerning the redesign of a packaging automatic machine. Results show how the proposed approach is useful to detect possible ergonomic issues at the shop floor, identifying in advance risky situations for the operators during operating or maintenance tasks, and leading to an optimized machine able to enhance the workers’ wellbeing and factory productivity at the same time

Spray-loading: A cryogenic deposition method for diamond anvil cell.

An efficient loading technique has been developed for flammable, toxic, or explosive gases which can be condensed at liquid nitrogen temperature and ambient pressure in membrane diamond anvil cells (DACs). This cryogenic technique consists in a deposition of small quantities of the desired gas directly into the sample chamber. The deposition is performed using a capillary that reaches the space between the diamond anvils. The DAC is kept under inert gas overpressure during the whole process, in order to avoid contamination from atmospheric O2, CO2, and H2O. This technique provides significant advantages over standard cryo-loading and gas-loading when the condensation of dangerous samples at liquid nitrogen temperature raises safety concerns because it allows dealing with minimum quantities of condensed gases. The whole procedure is particularly fast and efficient. The "spray-loading" has been successfully used in our laboratory to load several samples including acetylene, ammonia, ethylene, and carbon dio..

Preliminary Validation of a Low-Cost Motion Analysis System Based on RGB Cameras to Support the Evaluation of Postural Risk Assessment

This paper introduces a low-cost and low computational marker-less motion capture system based on the acquisition of frame images through standard RGB cameras. It exploits the open-source deep learning model CMU, from the tf-pose-estimation project. Its numerical accuracy and its usefulness for ergonomic assessment are evaluated by a proper experiment, designed and performed to: (1) compare the data provided by it with those collected from a motion capture golden standard system; (2) compare the RULA scores obtained with data provided by it with those obtained with data provided by the Vicon Nexus system and those estimated through video analysis, by a team of three expert ergonomists. Tests have been conducted in standardized laboratory conditions and involved a total of six subjects. Results suggest that the proposed system can predict angles with good consistency and give evidence about the tool’s usefulness for ergonomist

<i>Dialogare</i>: compendio di chimica

This compendium is aimed at all students who, in the transition from secondary school to university, have to face a chemistry exam in their course of study and want to fill their knowledge gaps or, simply, to review the minimum topics of the subject, before deepening them during university courses. By studying and reviewing the various topics, grouped in parts and units, the reader will therefore have the possibility to access the fundamental notions that make up “General Chemistry”. The end-of-chapter exercises are an additional aid allowing students to carry out a self-assessment and, possibly, to identify particularly “difficult” topics to be further studied.Questo compendio \ue8 rivolto a tutti gli studenti che, passando dalle scuole superiori all’Universit\ue0, si trovano a dover affrontare nel loro percorso di studi un esame di chimica e vogliono colmare le proprie lacune o, semplicemente, ripassare gli argomenti minimi della materia, prima di approfondirli successivamente durante i corsi universitari. Studiando e ripassando le varie schede, raggruppate in parti ed unit\ue0, sar\ue0 possibile dunque ritrovare le nozioni fondamentali per ognuno degli argomenti che costituiscono la ‘chimica generale’. Gli esercizi di fine capitolo costituiscono un ulteriore aiuto che permette allo studente di effettuare un’autovalutazione ed, eventualmente, individuare eventuali argomenti ‘pi\uf9 ostici’ da studiare ed approfondire meglio