Books


03-09-21
The chemistry of cosmetics
The chemistry of cosmetics The chemistry of cosmetics

Cosmetics materials are not a modern invention. Humans have used various substances to alter their appearance or accentuate their features for at least 10,000 years, and possibly a lot longer.       Women in Ancient Egypt used kohl, a substance…

Cosmetics materials are not a modern invention. Humans have used…

Gratis
London
03-09-21
Importance of Using Paper Bags
Importance of Using Paper Bags Importance of Using Paper Bags

    Carrybags has  become  a  more  convenient way  to  carry  daily  necessities  and  for  packaging  in small quantities. The well-known form of such bags is in the form of plastic bags. Despite of all known hazards of plastic pollution, it’s prevalent…

    Carrybags has  become  a  more  convenient way  to  carry  daily …

Gratis
London
03-09-21
Key Door Hardware Components for Safety and Security
Key Door Hardware Components for Safety and Security Key Door Hardware Components…

Understanding door hardware options and opportunities is the first step in turning threats and weaknesses into strengths. Entry doors with window mesh might be in bad condition, with broken closers, loose hinges, doors that sag or are sticking, latches…

Understanding door hardware options and opportunities is the first…

Gratis
London
03-09-21
What is Grinding?
What is Grinding? What is Grinding?

Grinding takes an abrasive — often attached to a grinding wheel — and uses its many grains to cut a workpiece. Variations on this process are useful for a wide variety of applications.     On its surface, grinding seems simple: a machine takes a rotating…

Grinding takes an abrasive — often attached to a grinding wheel — and…

Gratis
London
03-09-21
What is injection molding?
What is injection molding? What is injection molding?

Precision injection molding of high performance components requires primary error sources affected the molded component to be identified and isolated such that these errors can be reduced if needed. To systematically isolate and quantify the contribution…

Precision injection molding of high performance components requires…

Gratis
London