Search results for "Grit"

An Experimental Investigation of Residual Stresses in Hard Machining of AISI 52100 Steel

2011

In this paper an experimental investigation was conducted to determine the effects of the tool cutting-edge geometry, workpiece hardness, cutting speed, and microstructural changes (white and dark layers) on the residual stresses in dry orthogonal hard machining of AISI 52100 steel. X-ray diffraction technique was used to obtain in-depth residual stresses profiles in both axial and circumferential directions. The results show that tool geometry, workpiece hardness and cutting parameters significantly affect the surface residual stress, maximum compressive residual stress below the machined surface and its location. Moreover, microstructural analysis shows that thermally-induced phase transf…

Human Dignity and Legally Protected Goods in Criminal Law

2020

Criminal law protects certain basic goods because they are directly or indirectly connected with the dignity of the person. However, in cases such as euthanasia, prostitution or surrogacy motherhood, the appeal to the dignity of the person is used, in the opposite sense, as the basis for decriminalization. In these cases, dignity is identified with the autonomy of the person and their capacity to dispose of all their goods, even if they are essential. This work argues that there is an ontological core of dignity (requirement of absolute respect) that is subtracted from autonomy and that is protected by the concept of ‘moral integrity’. It prevents certain conducts from being decriminalized …

Erratum to “Hydrolytic enzyme activity of Paenibacillus sp. strain B2 and effects of the antagonistic bacterium on cell integrity of two soil-borne p…

2001

Ce texte contient des corrections apportées à l'article " Hydrolytic enzyme activity of Paenibacillus sp. strain B2 and effects of the antagonistic bacterium on cell integrity of two soil-borne pathogenic fungi" sorti dans le numéro 15 du journal "Applied Soil Ecology" sorti en 2000.

Surface Integrity and Microstructural Phenomena of Ck 60 Steel Due to Electro-Discharge Machining

2006

The Principle of Respect for Human Vulnerability and Assisted Reproductive Technologies

2016

The chapter tackles the assisted reproductive technologies (ARTs), and the incorporation of two controversial procedures to increase the number of individuals who may satisfy their wish to have children: international commercial surrogacy and mitochondrial transfer. Both of them have an important point in common: the high degree of involvement within the reproduction process demanded to a different woman from the woman who will be the legal mother. In international surrogacy, a woman undergoes a baby gestation for another woman in a different country, who will be the legal mother since the baby is born. In mitochondrial transfer, a woman donates her eggs so that her mitochondria may be used…

Latest Frontier Technology and Design of the ATLAS Calorimeter Trigger Board Dedicated to Jet Identification for the LHC Run 3

2016

To cope with the enhanced luminosity of the beam delivered by the Large Hadron Collider (LHC) in 2020, the “A Toroidal LHC ApparatuS” (ATLAS) experiment has planned a major upgrade. As part of this, the trigger at Level1 based on calorimeter data will be upgraded to exploit fine-granularity readout using a new system of Feature Extractors, which each use different physics objects for the trigger selection. The article focusses on the jet Feature EXtractor (jFEX) prototype, one of the three types of Feature Extractors. Up to 2 TB/s have to be processed to provide jet identification (including large area jets) and measurements of global variables within few hundred nanoseconds latency budget.…

Design and testing of the high speed signal densely populated ATLAS calorimeter trigger board dedicate to jet identification

2017

Abstract—The ATLAS experiment has planned a major upgrade in view of the enhanced luminosity of the beam delivered by the Large Hadron Collider (LHC) in 2021. As part of this, the trigger at Level-1 based on calorimeter data will be upgraded to exploit fine-granularity readout using a new system of Feature Extractors (three in total), which each uses different physics objects for the trigger selection. The contribution focusses on the jet Feature EXtractor (jFEX) prototype. Up to a data volume of 2 TB/s has to be processed to provide jet identification (including large area jets) and measurements of global variables within few hundred nanoseconds latency budget. Such requirements translate …

Development of an optical link card for the upgrade phase II of TileCal experiment

2010

This work presents the design of an optical link card developed in the frame of the R&D activities for the phase 2 upgrade of the TileCal experiment as part of the evaluation of different technologies for the final choice in the next two years. The board is designed as a mezzanine which can work independently or plugged in the Optical Multiplexer Board of the TileCal backend electronics. It includes two SNAP 12 optical connectors able to transmit and receive up to 75 Gbps and one SFP optical connector for lower speeds and compatibility with existing hardware as the Read Out Driver. All processing is done in a Stratix II GX FPGA. Details are given on the hardware design including signal and …

The Loss of Structural Integrity in Damaged Spruce Needles from Locations Exposed to Air Pollution I. Mesophyll and Central Cylinder

1990

In connection with the new type of forest damage, the individual disease situation of two-year-old spruce (Picea abies) needles was analyzed histopathologically in forest areas exposed to different levels of O3-, SO2- and NO3- pollution. Early damage results from losses of chlorophyll in the mesophyll cells. The bleaching is more intensive towards the apex in severely damaged needles. The cytoplasm is aggregated at the cell wall and the chloroplasts show definite structural damage as well. The mesophyll cells below the epidermis, or the cells adjacent to the vascular bundle sheath, appear to be particularly susceptible. Collapsed cells (bone cells), which increase in number with damage, can…

Towards Nearly Zero Energy and Environmentally Sustainable Agritourisms: The Effectiveness of the Application of the European Ecolabel Brand

2020

Tourism represents an important economic driver in Italy, being responsible for approximately 13.2% of the total GDP (a value higher than the reference European average) and for nearly 10% of the regional GDP. Among the touristic sectors, the agritourist ones show a persistent growth, experiencing in 2019 a 6.7 point percentage improvement compared to the 2017 figures. Given this situation, the transition towards a low-carbon path, affecting the building sector for some time, should also involve agritourist buildings, through the release of EU directives, member state laws, and technical rules. On the other hand, agritourism sites could be awarded the Community EU Ecolabel. Unfortunately, a…