| D008670 |
Metals |
Electropositive chemical elements characterized by ductility, malleability, luster, and conductance of heat and electricity. They can replace the hydrogen of an acid and form bases with hydroxyl radicals. (Grant & Hackh's Chemical Dictionary, 5th ed) |
Metal |
|
| D010209 |
Paper |
Thin sheets made from wood pulp and other fibrous substances, used for writing, drawing, printing, image duplication or wrapping. |
Papers |
|
| D010969 |
Plastics |
Polymeric materials (usually organic) of large molecular weight which can be shaped by flow. Plastic usually refers to the final product with fillers, plasticizers, pigments, and stabilizers included (versus the resin, the homogeneous polymeric starting material). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) |
Plastic |
|
| D010988 |
Play and Playthings |
Spontaneous or voluntary recreational activities pursued for enjoyment and accessories or equipment used in the activities; includes games, toys, etc. |
Puppets,Toys,Play,Playthings,Plays,Plaything,Playthings and Play,Puppet,Toy |
|
| D002031 |
Bulgaria |
A country in Southeastern Europe, bordering the Black Sea, between Romania and Turkey. The capital is Sofia. |
|
|
| D002648 |
Child |
A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL. |
Children |
|
| D004396 |
Coloring Agents |
Chemicals and substances that impart color including soluble dyes and insoluble pigments. They are used in INKS; PAINTS; and as INDICATORS AND REAGENTS. |
Coloring Agent,Dye,Dyes,Organic Pigment,Stain,Stains,Tissue Stain,Tissue Stains,Organic Pigments,Pigments, Inorganic,Agent, Coloring,Inorganic Pigments,Pigment, Organic,Pigments, Organic,Stain, Tissue,Stains, Tissue |
|
| D004866 |
Equipment Contamination |
The presence of an infectious agent on instruments, prostheses, or other inanimate articles. |
Contamination, Equipment,Contaminations, Equipment,Equipment Contaminations |
|
| D006801 |
Humans |
Members of the species Homo sapiens. |
Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man |
|
| D013499 |
Surface Properties |
Characteristics or attributes of the outer boundaries of objects, including molecules. |
Properties, Surface,Property, Surface,Surface Property |
|