Fabrication of cellulose nanofiber-based functional color indicator film incorporated with shikonin extracted from Lithospermum erythrorhizon root

2021 ◽  
Vol 114 ◽  
pp. 106566
Author(s):  
Swarup Roy ◽  
Jong-Whan Rhim
Keyword(s):  
Cellulose Nanofiber ◽  
Lithospermum Erythrorhizon ◽  
Color Indicator ◽  
Indicator Film

scholarly journals On-Package Color Indicator for Ripeness Monitoring of tape ketan Packaging

2020 ◽  
pp. 27-31 ◽  
Author(s):  
Bambang Kuswandi ◽  
Mahawan A. G. Nuriman
Keyword(s):  
Water Vapor ◽  
Relative Humidity ◽  
Crystal Violet ◽  
Color Change ◽  
Titratable Acidity ◽  
Product Packaging ◽  
Glutinous Rice ◽  
Fermentation Stage ◽  
Color Indicator ◽  
Indicator Film

A color indicator for tape ketan (TK) (Indonesian fermented steamed glutinous rice product) packaging was developed to monitor the fermentation stage of TK during storage and distribution. Tape ketan was packed in a tray of polypropylene (PP) with a lid of nylon/cast polypropylene (Ny/CPP). A color indicator film consisting of Nafion® and crystal violet (CV) was attached to the lid as an on-package indicator and change its color as water vapor or relative humidity changes. During fermentation at ambient temperature (28±1°C), the TK quality was assessed for pH, titratable acidity (TA), ethanol content and sensory evaluation (aroma, taste, and color), in correlation with the color change of the indicator. In conclusion, the color values of the indicator correlated well with sensory values as a degree for fermentation stage of TK along with other parameters, such as pH, TA, and ethanol, and could be detected clearly with yellow for unripe, blue for ripe, and finally pale blue for overripe.

Multi-layer oil-resistant food serving containers made using cellulose nanofiber coated wood flour composites

2021 ◽  
pp. 118221
Author(s):  
Rakibul Hossain ◽  
Mehdi Tajvidi ◽  
Douglas Bousfield ◽  
Douglas J. Gardner
Keyword(s):  
Wood Flour ◽  
Cellulose Nanofiber

MXene/Cellulose Nanofiber-Foam Based High Performance Degradable Piezoresistive Sensor with Greatly Expanded Interlayer Distances

Nano Energy ◽  
2021 ◽  
pp. 106151
Author(s):  
Tuoyi Su ◽  
Nishuang Liu ◽  
Yihua Gao ◽  
Dandan Lei ◽  
Luoxin Wang ◽  
...  
Keyword(s):  
High Performance ◽  
Cellulose Nanofiber ◽  
Piezoresistive Sensor

scholarly journals VirtualCPR: Virtual Reality Mobile Application for Training in Cardiopulmonary Resuscitation Techniques

Sensors ◽  
2021 ◽  
Vol 21 (7) ◽  
pp. 2504
Author(s):  
Francisco Javier García Fierros ◽  
Jesús Jaime Moreno Escobar ◽  
Gabriel Sepúlveda Cervantes ◽  
Oswaldo Morales Matamoros ◽  
Ricardo Tejeida Padilla
Keyword(s):  
Virtual Reality ◽  
Cardiopulmonary Resuscitation ◽  
Mobile Application ◽  
Force Measurement ◽  
Heart Diseases ◽  
Medical Knowledge ◽  
Public Health Problem ◽  
Force Sensor ◽  
Previous Training ◽  
Color Indicator

Deaths due to heart diseases are a leading cause of death in Mexico. Cardiovascular diseases are considered a public health problem because they produce cardiorespiratory arrests. During an arrest, cardiac and/or respiratory activity stops. A cardiorespiratory arrest is rapidly fatal without a quick and efficient intervention. As a response to this problem, the VirtualCPR system was designed in the present work. VirtualCPR is a mobile virtual reality application to support learning and practicing of basic techniques of cardiopulmonary resuscitation (CPR) for experts or non-experts in CPR. VirtualCPR implements an interactive virtual scenario with the user, which is visible by means of employment of virtual reality lenses. User’s interactions, with our proposal, are by a portable force sensor for integration with training mannequins, whose development is based on an application for the Android platform. Furthermore, this proposal integrates medical knowledge in first aid, related to the basic CPR for adults using only the hands, as well as technological knowledge, related to development of simulations on a mobile virtual reality platform by three main processes: (i) force measurement and conversion, (ii) data transmission and (iii) simulation of a virtual scenario. An experiment by means of a multifactorial analysis of variance was designed considering four factors for a CPR session: (i) previous training in CPR, (ii) frequency of compressions, (iii) presence of auditory suggestions and (iv) presence of color indicator. Our findings point out that the more previous training in CPR a user of the VirtualCPR system has, the greater the percentage of correct compressions obtained from a virtual CPR session. Setting the rate to 100 or 150 compressions per minute, turning on or off the auditory suggestions and turning the color indicator on or off during the session have no significant effect on the results obtained by the user.

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