scholarly journals Analysing and evaluating a dual-sensor autofocusing method for measuring the position of patterns of small holes on complex curved surfaces

2014 ◽  
Vol 210 ◽  
pp. 86-94
Author(s):  
Xiaomei Chen ◽  
Andrew Longstaff ◽  
Simon Fletcher ◽  
Alan Myers
Keyword(s):  
Curved Surfaces ◽  
Dual Sensor ◽  
Small Holes

scholarly journals Deployment and evaluation of a dual-sensor autofocusing method for on-machine measurement of patterns of small holes on freeform surfaces

2014 ◽  
Vol 53 (10) ◽  
pp. 2246
Author(s):  
Xiaomei Chen ◽  
Andrew Longstaff ◽  
Simon Fletcher ◽  
Alan Myers
Keyword(s):  
Freeform Surfaces ◽  
Dual Sensor ◽  
Small Holes

Stereo Electron Microscopy Applied to High Resolution Freeze-Etch Replicas

1970 ◽  
Vol 28 ◽  
pp. 306-307
Author(s):  
L. Andrew Staehelin
Keyword(s):  
Electron Microscopy ◽  
Plastic Deformation ◽  
High Resolution ◽  
Smooth Surfaces ◽  
Small Particles ◽  
Membrane Surfaces ◽  
Wide Acceptance ◽  
New Information ◽  
Number Of Particles ◽  
Small Holes

Freeze-etched membranes usually appear as relatively smooth surfaces covered with numerous small particles and a few small holes (Fig. 1). In 1966 Branton (1“) suggested that these surfaces represent split inner mem¬brane faces and not true external membrane surfaces. His theory has now gained wide acceptance partly due to new information obtained from double replicas of freeze-cleaved specimens (2,3) and from freeze-etch experi¬ments with surface labeled membranes (4). While theses studies have fur¬ther substantiated the basic idea of membrane splitting and have shown clearly which membrane faces are complementary to each other, they have left the question open, why the replicated membrane faces usually exhibit con¬siderably fewer holes than particles. According to Branton's theory the number of holes should on the average equal the number of particles. The absence of these holes can be explained in either of two ways: a) it is possible that no holes are formed during the cleaving process e.g. due to plastic deformation (5); b) holes may arise during the cleaving process but remain undetected because of inadequate replication and microscope techniques.

Flexible Sensors for NDI of Curved Surfaces on Turbofan Components

2018 ◽  
Author(s):  
Evan Weststrate ◽  
◽  
Michael S. Squillante ◽  
Sergey Chekanov
Keyword(s):  
Curved Surfaces ◽  
Flexible Sensors

A Dual Sensor for Biogenic Amines and Oxygen Based on Genipin Immobilized in Edible Calcium Alginate Gel Beads

2020 ◽  
Author(s):  
Ian Mallov ◽  
Fiona Jeeva ◽  
Chris Caputo
Keyword(s):  
Biogenic Amines ◽  
Calcium Alginate ◽  
Alginate Beads ◽  
Colorimetric Sensing ◽  
Naturally Occurring ◽  
Gel Beads ◽  
Dual Sensor ◽  
Calcium Alginate Gel ◽  
Toxic Food

Food is often wasted due to real or perceived concerns about preservation and shelf life. Thus, precise, accurate and consumer-friendly methods of indicating whether food is safe for consumers are drawing great interest. The colorimetric sensing of biogenic amines released as food degrades is a potential way of determining the quality of the food. Herein, we report the use of genipin, a naturally occurring iridoid, as a dual colorimetric sensor for both oxygen and biogenic amines. Immobilization of genipin in edible calcium alginate beads demonstrates that it is a capable sensor for amine vapors and can be immobilized in a non-toxic, food-friendly matrix.

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