scholarly journals Sensing Using Light: A Key Area of Sensors

Sensors ◽  
2021 ◽  
Vol 21 (19) ◽  
pp. 6562
Author(s):  
José Miguel López-Higuera

This invited featured paper offers a Doctrinal Conception of sensing using Light (SuL) as an “umbrella” in which any sensing approach using Light Sciences and Technologies can be easily included. The key requirements of a sensing system will be quickly introduced by using a bottom-up methodology. Thanks to this, it will be possible to get a general conception of a sensor using Light techniques and know some related issues, such as its main constituted parts and types. The case in which smartness is conferred to the device is also considered. A quick “flight” over 10 significant cases using different principles, techniques, and technologies to detect diverse measurands in various sector applications is offered to illustrate this general concept. After reading this paper, any sensing approach using Light Sciences and Technologies may be easily included under the umbrella: sensing using Light or photonic sensors (PS).

2017 ◽  
Vol 10 (5) ◽  
pp. 173 ◽  
Author(s):  
Ali Karnib

The 2030 Agenda for sustainable development comprises 17 Sustainable Development Goals (SDGs) that aimed at achieving universal access to basic needs and services for all. Moreover, the SDGs present a broad and comprehensive set of goals that cover social, economic and environmental aspects. The global SDGs are interlinked and they are either mutually supportive or conflicting. Informing about the interlinkages enables policy makers to harness synergies and manage any potential conflicts between policies engaged to achieve the SDGs. This paper introduces a framework to analyze interlinkages across the SDGs based on a bottom-up process which is supported by a quantitative nexus theoretical method to evaluate the direct and indirect quantitative interactions among SDG variables. Firstly, the general concept of analyzing interactions based on a bottom-up process is presented. Secondly, a quantitative nexus method based on input-output theory that permits the evaluation of the direct and indirect interaction effects among SDG variables is introduced. Lastly, a numerical experiment is presented and results are discussed.


Author(s):  
H.B. Pollard ◽  
C.E. Creutz ◽  
C.J. Pazoles ◽  
J.H. Scott

Exocytosis is a general concept describing secretion of enzymes, hormones and transmitters that are otherwise sequestered in intracellular granules. Chemical evidence for this concept was first gathered from studies on chromaffin cells in perfused adrenal glands, in which it was found that granule contents, including both large protein and small molecules such as adrenaline and ATP, were released together while the granule membrane was retained in the cell. A number of exhaustive reviews of this early work have been published and are summarized in Reference 1. The critical experiments demonstrating the importance of extracellular calcium for exocytosis per se were also first performed in this system (2,3), further indicating the substantial service given by chromaffin cells to those interested in secretory phenomena over the years.


PsycCRITIQUES ◽  
2005 ◽  
Vol 50 (19) ◽  
Author(s):  
Michael Cole
Keyword(s):  
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