1. Introduction
1) Definition of preservation and food-spoilage micro-organisms
Food preservation is the process of treating and handling food to stop or greatly slow down spoilage (loss of quality, edibility or nutritive value) caused or accelerated by micro-organisms. Some methods, however, use benign bacteria, yeasts or fungi to add specific qualities and to preserve food (e.g., cheese, wine
1 GPa
Elastic modulus Nanoindentation > 6 GPa
Adhesion Tape pull, modified-edge lift-off Delamination-free
Disavantages
Weakens mechanical properties
Lower thermal conductivity
Narrow pore distribution to ensure dielectric constant is homogeneous and isotropic
Pores need to be closed cells to prevent crack propagation and moisture absorption
Need to add silica to seal surface pores
2. Important Characteristics of TiO2
(1) Photocatalystic Character
- If the light energy is irrigated at TiO2, the catalyst which absorbed the light energy will activate so it oxidize and restore aspirates.
(2) Characteristic of Ultra-hydrophile
- Ultra-hydrophile is the status that befit with the surface of the material such as glass.
For many of Materials, if we drop water, it ma
of differences in diffusion rates.
These are arising from differences in molecular size and solubility.
This means that the resistance increases with increasing molecular weight.
The solutes separate by passing through the membrane that
behaves like a fibre filter and separation occurs by a sieving
action based on the pore diameter and particle size
(i.e. smaller molecules will diffus
electricity and heat as long as fuel and an oxidizer are supplied.
Fuel cell construction generally consists of a fuel electrode (anode) and an oxidant electrode (cathode), and they are separated by an ion-conducting membrane. Oxygen passes over one electrode, and hydrogen over the other, and it generates electricity, water and heat. Fuel cells chemically combine the molecules of a fuel and o