Making Plastics from Garbage.

Plastics from Residential Electronics Recycling

I nt ro duc t io n 4 What is Electro n ic Equipme nt ? 5 What Pro ducts are Pre s e nt in the Reside nt ial E l e c t ro n ics Waste Stre a m ? 7 What Ma t e r ials Are Used to Ma nu fa c t u re E l e c t ro n ic Pro ducts Found in the Reside nt ial Waste Stre a m ? 7 W hy are Plastics Used in the Ma nu fa c t u re of Electro n ic Equipme nt ? 9 What Plastic Resins Are Used in Electro n ic Equi...

Making the World Safe for Garbage Collection, 1981

This paper describes the formal specifications of garbage collection in the programming language Cedar Mesa. They were developed as part of the process of identifying a safe subset of Mesa for which garbage collection was possible. The purpose of the specifications was to provide a precise definition of safety, along with criteria for checking the safety of proposed language features. Thus the ...

The stigma of making a living from garbage: Meta-sterotypes of trash-pickers in León (Nicaragua).

The article analyzes various aspects related to the meta-stereotype of 99 trash pickers who made their living from the garbage dumps in León (Nicaragua). This group is difficult to access, heavily stigmatized, and lives in extreme poverty. All the pickers in the city were interviewed using a heteroapplied structured interview. The results show that people who obtained their livelihood from garb...

The promise of plastics from plants.

Injection Molding of Plastics from Agricultural Materials

OBJECTIVE DOE Chicago Operations %ice The objective of this research was to conduct a systematic study to relate injection molding parameters to properties of blends of starch and synthetic polymer. Blends of normal (25 % amylose) and high amylose (50 and 70% amylose) corn starch (containing between 60 and 70 % of the mixture by weight) and synthetic polymer were used in this research. Two diff...