Material change: transforming experience

2021 ◽  
pp. 89-102
Author(s):  
Debra Lilley ◽  
Ben Bridgens
Keyword(s):  
2021 ◽  
Vol 22 (3) ◽  
pp. 1067
Author(s):  
Georgios Romanos ◽  
Gerard Fischer ◽  
Rafael Delgado-Ruiz

The objective of this review was to analyze the process of wear of implants leading to the shedding of titanium particles into the peri-implant hard and soft tissues. Titanium is considered highly biocompatible with low corrosion and toxicity, but recent studies indicate that this understanding may be misleading as the properties of the material change drastically when titanium nanoparticles (NPs) are shed from implant surfaces. These NPs are immunogenic and are associated with a macrophage-mediated inflammatory response by the host. The literature discussed in this review indicates that titanium NPs may be shed from implant surfaces at the time of implant placement, under loading conditions, and during implant maintenance procedures. We also discuss the significance of the micro-gap at the implant-abutment interface and the effect of size of the titanium particles on their toxicology. These findings are significant as the titanium particles can have adverse effects on local soft and hard tissues surrounding implants, implant health and prognosis, and even the health of systemic tissues and organs.


Author(s):  
Andrés Villarruel Jaramillo ◽  
Juan Carlos Rocha Hoyos ◽  
Edilberto Antonio Llanes Cedeño ◽  
Javier Martínez Gómez

Author(s):  
Daniel Essig García

Abstract: cultural and material change described by historians of reading intersects with literary history in different and complex ways. An example is the cultural practice of silent reading in intimacy, which came to be pivotal for the literature of sensibility. It was gendered female in the eighteenth century and looked upon with disfavour, notably by moralists and pedagogues. However, not very long before, silent reading was associated with spirituality and women’s religious experiences, and was compatible with the virtues expected of the “lady of the Renaissance”. Several texts from the seventeenth century, notably diaries by women, will be discussed. Título en español: “Resonancia del silencio: inspiración y pasividad en la lectura femenina en el siglo XVII”.Resumen:los cambios culturales y materiales que describe la historia de la lectura entran en relaciones variadas y complejas con la historia literaria. Un ejemplo de esa dialéctica es la evolución de la práctica de la lectura silenciosa en recogimiento, que alcanzó una importancia extraordinaria para la novelística del Dieciocho. Se consideraba propia de las mujeres y estaba mal vista por moralistas y pedagogos. No mucho antes, empero, la lectura en silencio había sido un componente de la experiencia espiritual y religiosa de la mujer del Renacimiento, y como tal compatible con las virtudes femeninas. El artículo incluye comentarios de varios textos del diecisiete, en particular diarios de mujeres.


Author(s):  
K J Solly ◽  
A J Kempster ◽  
J R Southgate

Consumer resistance to overfat meat is growing because of its wastefulness and increasing concern about the probable link between fat consumption and health. Despite this, there is little evidence to indicate any material change in the fatness of British beef carcasses over the past 10 years. The average separable fat content of beef carcasses in both 1974/76 and 1984 is estimated to be 220g/kg (Kempster, Cook and Grantley-Smith, 1986).


2019 ◽  
Vol 220 ◽  
pp. 417-430 ◽  
Author(s):  
D. Lilley ◽  
B. Bridgens ◽  
A. Davies ◽  
A. Holstov
Keyword(s):  

2020 ◽  
Vol 245 (3275) ◽  
pp. 54
Keyword(s):  

1921 ◽  
Vol 14 (6) ◽  
pp. 337-341
Author(s):  
Harrison E. Webb

If the future of secondary instruction in geometry is to be judged in the light of the past, two thousand years may elapse without any material change. Horace boasted of a monument more enduring than bronze. Euclid’s Elements has stood like a granite monolith against the intellectual erosion of centuries. This book has seen the decline of great civilizations, the rise and fall of empires, and the birth of great religions. It has passed unscathed through countless successions of languages and dialects. Such is its perfection of detail that all attempts at improvement during its two milleniums of existence have led only to a return to its original form and substance.


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