scholarly journals Superior performance of macroporous over gel type polystyrene as a support for the development of photo-bactericidal materials

2017 ◽  
Vol 5 (30) ◽  
pp. 6058-6064 ◽  
Author(s):  
Carles Felip-León ◽  
Carla Arnau del Valle ◽  
Vanesa Pérez-Laguna ◽  
María Isabel Millán-Lou ◽  
Juan F. Miravet ◽  
...  
Keyword(s):  
Singlet Oxygen ◽  
Superior Performance ◽  
Polystyrene Resins

Macroporous polystyrene resins are best suited than gel-type polymers to develop supported photosensitizers for the generation of bactericidal singlet oxygen.

In situ TEM Studies of agglomeration of sub-nanometer Ru layers in Ru/C multilayers

1992 ◽  
Vol 50 (1) ◽  
pp. 256-257
Author(s):  
Tai D. Nguyen ◽  
Ronald Gronsky ◽  
Jeffrey B. Kortright
Keyword(s):  
Layered Structure ◽  
Driving Force ◽  
High Energy ◽  
Superior Performance ◽  
In Situ Tem ◽  
Rayleigh Instability ◽  
Practical Applications ◽  
Transmission Electron ◽  
Diffraction Patterns

Nanometer period Ru/C multilayers are one of the prime candidates for normal incident reflecting mirrors at wavelengths < 10 nm. Superior performance, which requires uniform layers and smooth interfaces, and high stability of the layered structure under thermal loadings are some of the demands in practical applications. Previous studies however show that the Ru layers in the 2 nm period Ru/C multilayer agglomerate upon moderate annealing, and the layered structure is no longer retained. This agglomeration and crystallization of the Ru layers upon annealing to form almost spherical crystallites is a result of the reduction of surface or interfacial energy from die amorphous high energy non-equilibrium state of the as-prepared sample dirough diffusive arrangements of the atoms. Proposed models for mechanism of thin film agglomeration include one analogous to Rayleigh instability, and grain boundary grooving in polycrystalline films. These models however are not necessarily appropriate to explain for the agglomeration in the sub-nanometer amorphous Ru layers in Ru/C multilayers. The Ru-C phase diagram shows a wide miscible gap, which indicates the preference of phase separation between these two materials and provides an additional driving force for agglomeration. In this paper, we study the evolution of the microstructures and layered structure via in-situ Transmission Electron Microscopy (TEM), and attempt to determine the order of occurence of agglomeration and crystallization in the Ru layers by observing the diffraction patterns.

We're So Bad It's Funny - Effects of Using Humour in the Marketing Communication of Low-Quality Service Providers

2020 ◽  
Vol 4 (2-3) ◽  
pp. 84-99
Author(s):  
Ilias Danatzis ◽  
Jana Möller ◽  
Christine Mathies
Keyword(s):  
Service Quality ◽  
Service Providers ◽  
Purchase Intentions ◽  
Service Performance ◽  
Superior Performance ◽  
Service Research ◽  
Marketing Communication ◽  
Quality Service ◽  
Customer Expectations ◽  
Service Outcomes

Low-quality service providers who are unable or unwilling to compete through superior performance increasingly use humour in their marketing communication to generate positive service outcomes. Yet it remains unclear whether using humour to communicate poor service quality is indeed effective. Based on an online experiment in the context of budget hotels, this study finds that using humour to deliberately communicate poor service quality leads to higher purchase intentions and service quality evaluations by reducing both technical and functional service quality expectations. Theoretically, this study extends humour and service research by providing first empirical evidence for the viability of using humour as an effective tool for leveraging customer expectations of service quality rather than improving service performance. Managerially, these insights highlight how reducing customer expectations is an alternative strategy for attracting new customers and for achieving superior quality evaluations.

Fluoroquinolone Antimicrobials: Singlet Oxygen, Superoxide and Phototoxicity

1998 ◽  
Vol 67 (4) ◽  
pp. 399 ◽  
Author(s):  
Lydia J. Martínez ◽  
Robert H. Sik ◽  
Colin F. Chignell
Keyword(s):  
Singlet Oxygen
Sign in / Sign up

Export Citation Format

Share Document