The materials required for scaffold preparation were organized before the assembly of the 24-well plates. Electrospun mats were cut into circular discs using a stainless-steel hollow punch and hammer, then transferred to the culture plates.
Chemical substances as H2S is dangerous for the body because it inhibits the respiration of cellular respiration which damages the central nervous system. Is responsible for many incidents of occupational toxic exposure . Is immediately fatal when concentration are over 500 ppm
Information on substances that are present and produced during accidents is particularly significant for analyses of accidents scenarios and assessment of their potential consequences.
Cognitive models analyse human errors in terms of failures in cognition function- how these are caused by contextual variables and how these variables lead to accidents.
The energy represented by a hazard may be of a difterent type, and is subsequently absorbed by the victim's body and the ground in the impact. The consequences are determined by the amount of energy
involved and how this energy is exchanged between the victim and the ground.
Safe processes must be maintained to prevent loss of equipment integrity and reliability. The equipment has been designed to contain the hazardous materials, to prevent loss of control, to prevent loss of containment & to reduce the consequences it control or containment is lost.
Safety culture/leadership: A safety program will only be as effective as required and supported by the underlying safety culture and leadership. If an organization has a weak safety culture, process satety efforts are probably doomed due to conflicting priorities.
Operational discipline (OD): OD describes human behavior in following required systems, procedures, and practices correctly every time to achieve safe and reliable operations. This does not happen here.(work in confined space)
Lapses cause us to forget to carry out an action, to lose our place in a task, or even to forget what we had intended to do. This type of human error is also related to skill-based behaviour.(not plumb the columns)