Role of mass diffusion and water desorption on optical clearing of biological tissue immersed with the hyperosmotic agents

Author(s):  
Ruikang K. Wang
2020 ◽  
Vol 41 (1) ◽  
pp. 5-42
Author(s):  
Eleonora Lima

This article examines the cultural impact of personal computers in Italian literature in the first decade of their mass diffusion (from the mid-1980s to the second half of the 1990s) through the analysis of four texts written by some of the most respected writers of the time: Primo Levi’s article “Personal Golem” (1985), Umberto Eco’s novel Il pendolo di Foucault (1988), Francesco Leonetti’s novel Piedi in cerca di cibo (1995), and Daniele Del Giudice’s story “Evil Live” (1997). More than simply addressing the advent of personal computers, what these texts have in common is the use of religious images and metaphors in order to make sense of the new technology. This study aims at showing how this frame of reference served the four writers in expressing the contradictions inherent to the machine. Bulky and tangible because of its hardware, but animated by an elusive and mysterious software, the personal computer was perceived at the same time as a dull office appliance and a threatening virtual entity. Finally, by showing how timely and well-informed these literary works on the impact of PCs are, this article wants to make the case for considering the role of literature in shaping computer culture.


2021 ◽  
pp. 569-576
Author(s):  
Layla Pires ◽  
Michelle Barreto Requena ◽  
Valentin Demidov ◽  
Ana Gabriela Salvio ◽  
I. Alex Vitkin ◽  
...  

1971 ◽  
Vol 93 (4) ◽  
pp. 1106-1112 ◽  
Author(s):  
Nam P. Suh ◽  
Subhash K. Naik

The role of oxide layers on tungsten carbide tools in metal cutting was investigated using oxide-treated tools. It is shown that the structural change of the subsurface of the tool takes place due to mass diffusion between the oxide and the substrate, which enhances the metal cutting properties of tungsten carbide tools. The tools were coated with titanium dioxide and heated in a vacuum of 10−4 torr. These oxide-treated tools and the untreated tools were diffusion-bonded to steel in a vacuum so as to determine the influence of the oxide treatment on mass diffusion. The changes in the hardness of these bonded specimens were measured after maintaining them at high temperatures for various durations. The hardness across the interface of the bonding changed sharply in the case of the untreated tools, the hardness of steel increasing and that of tungsten carbide decreasing. In the case of the oxide-treated tools, the hardness did not change appreciably. Cutting experiments showed that the cutting force and the crater wear decreased by about 12 to 20 percent after the oxide treatment.


2008 ◽  
Vol 4 (6) ◽  
pp. 2045-2051 ◽  
Author(s):  
C.C. Broomell ◽  
F.W. Zok ◽  
J.H. Waite

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