scholarly journals Profile of a new extended range-of-vision IOL: a laboratory study

2021 ◽  
Author(s):  
Daniele Tognetto ◽  
Rosa Giglio ◽  
Chiara De Giacinto ◽  
Marco R. Pastore ◽  
Gabriella Cirigliano ◽  
...  
Keyword(s):  
Laboratory Study ◽  
Crucial Role ◽  
Surface Profile ◽  
Smooth Change ◽  
Extended Range ◽  
Experimental Laboratory ◽  
Monofocal Iol ◽  
New Generation ◽  
Best Fit ◽  
Visual Disturbances

Abstract Purpose To evaluate the surface profile of a new-generation extended range-of-vision intraocular lens (IOL) and to compare it with that obtained for a monofocal IOL based on the same platform. Methods Prospective, experimental, laboratory study comparing the surface profile of the DFT015 (AcrySof IQ Vivity; Alcon Laboratories, Inc.), a new-generation presbyopia-correcting IOL, with the profile of the SN60WF (AcrySof IQ; Alcon Laboratories, Inc.), an aspheric monofocal IOL based on the same platform. Raw profiles were obtained using contact profilometry. The best-fit form was then subtracted from each raw profile to highlight potential differences. Results No significant differences were appreciated in raw profiles. On the contrary, after form removal, the new extended range-of-vision IOL showed a peculiar profile characterized by the presence of two altitudinal symmetrical changes in the order of 1 µm, localized in the central portion of the optic. Conclusions The new-generation extended range-of-vision IOL evaluated showed a smooth change of its surface compared to the same platform monofocal IOL. The altitudinal changes blended in the central design of the new presbyopia-correcting IOL, although micrometric, might play a crucial role in creating a continuous focal range while minimizing visual disturbances.

When Apologies for Injustice Matter

2008 ◽  
Vol 13 (4) ◽  
pp. 239-247 ◽  
Author(s):  
David De Cremer ◽  
Barbara C. Schouten
Keyword(s):  
Laboratory Study ◽  
Interaction Effect ◽  
Interactive Effect ◽  
Cross Sectional ◽  
Fairness Perceptions ◽  
Organizational Survey ◽  
Experimental Laboratory

The present research examined the idea that the effectiveness of apologies on promoting fairness perceptions depends on how meaningful and sincere the apology is experienced. More precisely, it was predicted that apologies are more effective when they are communicated by an authority being respectful to others. A study using a cross-sectional organizational survey showed that an apology (relative to giving no apology) revealed higher fairness perceptions, but only so when the authority was respectful rather than disrespectful. In a subsequent experimental laboratory study the same interaction effect (as in Study 1) on fairness perceptions was found. In addition, a similar interaction effect also emerged on participants’ self-evaluations in terms of relational appreciation (i.e., feeling valued and likeable). Finally, these self-evaluations accounted (at least partly) for the interactive effect on fairness perceptions.

Online quality evaluation of tissue paper structure on new generation tissue machines

2018 ◽  
Vol 33 (1) ◽  
pp. 133-141 ◽  
Author(s):  
Jukka-Pekka Raunio ◽  
Tommi Löyttyniemi ◽  
Risto Ritala
Keyword(s):  
3D Structure ◽  
Three Dimensional ◽  
Surface Profile ◽  
Absorption Capacity ◽  
Tissue Paper ◽  
Paper Manufacturing ◽  
Residual Variation ◽  
Residual Variances ◽  
New Generation

Abstract At present, the tissue paper manufacturing is mostly based on the dry crepe technology. During the last decade, the manufacturers have introduced new tissue machines concepts that increase the softness, bulk, and absorption capacity. Such machines produce a strong regular three-dimensional (3D) structure to the sheet before the Yankee cylinder. At present, the quality of the 3D structure is not evaluated, or it is evaluated only subjectively at the mill. This is mostly because of the difficulties to separate reliably the regular 3D pattern from other variations. This paper introduces a frequency analysis based method which separates the surface profile variances in tissue paper to the creping, to the regular 3D pattern and to the residual variation. The 3D surface profiles and their variances were determined online with the photometric stereo method. We show that the introduced analysis method evaluates the variance portions reliably and the results are consistent with the visual perception of the 3D surfaces. In one particular product, the regular 3D pattern explains 74 % of total surface variance; the creping explains 10 % and residual variations 16 %. Furthermore, the creping and residual variances are quite stable over time whereas the variance of the regular 3D pattern fluctuates significantly.

NEW GENERATION OPTICAL ELEMENTS WITH CENTRALLY SYMMETRIC ORIENTATION BASED ON LIQUID CRYSTAL POLYMERS

2020 ◽  
Vol 54 (1 (251)) ◽  
pp. 70-76
Author(s):  
H.L. Margaryan ◽  
N.H. Hakobyan ◽  
V.K. Abrahamyan ◽  
V.V. Belyaev ◽  
D.N. Chausov ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Optical Axis ◽  
Periodic Structures ◽  
Liquid Crystal Polymers ◽  
Optical Elements ◽  
Smooth Change ◽  
Ultrathin Layers ◽  
Centrally Symmetric ◽  
New Type ◽  
New Generation

The synthesis of new photo-orienting liquid crystal polymers made it possible to create a completely new type of optical elements consisting of ultrathin layers with a spatially structured orientation of the optical axis. In this paper the optical elements based on centrally symmetric periodic structures with cylindrical orientations of molecules are described. These elements are implemented using the recording method that provides a smooth change of optical axis in a thin film of a liquid crystal polymer. The optical elements on the base of described structures have new functionalities and may be assigned to the class of optical elements of a new generation.

scholarly journals EXPERIMENTAL LABORATORY STUDY OF THE PERIPHERAL BLOOD VALUES IN ANIMALS SUB JECT TO INTRAMUSCULAR IMPLANTATION OF NANO -MODIFIED TITANIUM DIO XID PROTOTYPE

2016 ◽  
Vol 12 (4) ◽  
pp. 61-66
Author(s):  
Оксана Шулятникова ◽  
Oksana Shulyatnikova ◽  
П. Косарева ◽  
P. Kosareva ◽  
Геннадий Рогожников ◽  
...  
Keyword(s):  
Laboratory Study ◽  
Peripheral Blood ◽  
Experimental Laboratory

scholarly journals Experimental-laboratory study of the flow around mussel shocks

2017 ◽  
Vol 3 (8) ◽  
pp. 76-83
Author(s):  
George Pechlivanidis ◽  
Alexandros Antoniou ◽  
Yiannis Savvidis
Keyword(s):  
Laboratory Study ◽  
Experimental Laboratory

scholarly journals Influence of dual conduit structure on solute transport in karst tracer tests: An experimental laboratory study

2020 ◽  
Vol 590 ◽  
pp. 125255
Author(s):  
Chaoqi Wang ◽  
Xiaoguang Wang ◽  
Samer Majdalani ◽  
Vincent Guinot ◽  
Hervé Jourde
Keyword(s):  
Solute Transport ◽  
Laboratory Study ◽  
Tracer Tests ◽  
Experimental Laboratory

Leading in a Knowledge Era

2010 ◽  
pp. 28-45
Author(s):  
Sharmila Jayasingham ◽  
Mahfooz A. Ansari
Keyword(s):  
Knowledge Management ◽  
Organizational Performance ◽  
Crucial Role ◽  
Leadership Behavior ◽  
Knowledge Worker ◽  
Leader Behavior ◽  
Success Factor ◽  
Critical Success Factor ◽  
Critical Success ◽  
New Generation

Knowledge management (KM) has been found to be a critical success factor for organizational performance. However, most organizations are found to be purely focused on the technological perspectives of KM initiatives at the expense of people perspective. They fail to realize that the success of any KM system relies upon the acceptance and motivation of knowledge worker (k-worker), the primary player in any KM initiatives. Here, knowledge leaders have a crucial role to play in influencing and encouraging k-workers to adopt KM practices. However, a transformation of leader behavior is required to manage this new generation of workers. This chapter thus highlights the power-influence approach to leadership behavior in promoting and instilling KM practices among k-workers.

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