Fuels and Chemicals - Autoignition Temperatures

The ignition point for some common fuels and chemicals butane, coke, hydrogen, petroleum and more

The Autoignition Temperature - or the minimum temperature required to ignite a gas or vapor in air without a spark or flame being present - are indicated for some common fuels below:

Hazard Vs Flash Point

The flash point indicates how easy a chemical may ignite and burn

The flash point of a chemical is the lowest temperature where it will evaporate enough fluid to form a combustible concentration of gas. The flash point is an indication of how easy a chemical may burn.
Materials with higher flash points are less flammable or hazardous than chemicals with lower flash points.

Chemicals and Hazard Rating Systems

The National Fire Protection Association (NFPA) hazard system for chemical materials

The National Fire Protection Association (NFPA) has developed a system for indicating the health, flammability, reactivity and special hazards for many common chemicals through use of the NFPA 704 Diamond.

Safety Signals - recommended Colors

American National Standards Institutes schedule of safety colors marking physical hazards

This chart shows recommended use of colors with additional information about piping, ductwork, etc.

Mencegah Copy atau Cut File dari PC ke Flashdisk

Adakalanya  ada teman yang memakai komputer kita entah itu izin atau tanpa izin dan temen kita menyalin file sesuka hatinya tanpa sepengetahuan kita, pada hal diantara file itu merupakan data penting bagi kita dan parahnya lagi, file itu merupakan rahasia pribadi.

Bisa bahayakan file itu jatuh ketangan orang-orang yang tidak bertanggung jawab,, Bisa Kasus Dah.... :P

Nah Untuk mencegah hal seperti itu terjadi, ada salah satu cara untuk Mencegah Copy atau Cut File dari PC ke Flashdisk yaitu dengan cara