Pumpkin, squash and sunflower seed kernels are all rich in both zinc and copper. Roasted pumpkin and squash seeds contain 9 milligrams of zinc per cup, while toasted sunflower seeds contain 7 milligrams in every cup.
Mechanical designers create designs for machines and mechanical devices. They combine drafting skills with mechanical engineering knowledge to assist product development engineers in the manufacture of new mechanical devices.echanical designers must have expert knowledge of mechanical and electrical engineering, computer drafting programs, and physical construction techniques. A career as a mechanical designer requires an aptitude for drawing.
Mechanical engineering is concerned with the design, manufacture, and operation of components, devices, or systems such as: 1  Heat exchangers, refrigerators, ventilation systems. 2  Manufacturing technologies that include use of lasers, precision machinery, and nano-technology. 3  Biomedical devices.he technical subject areas that form the main basis for their work include mechanics, energy transfer and conversion, design and manufacturing, and the engineering sciences. Through clever use of analysis, modeling, design, and synthesis, they solve important problems to improve quality of life.