A solid circular shaft is acted upon by the torques as shown. If G= 12, 000 ksi determine: a. Rotation of wheel D with respect to A. b. Shear stress at point E Diameter of shaft: A-B = 2in C-D = 2in B-C = 4in T1-3 m in.kips T2-7 m in.kips Тз- 8.5 п in.kips T4 = 4.5 m in.kips

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Biological Processes

Biological solid waste includes bacterial and contaminated waste produced by living individuals. Its treatment is essential to prevent the spread of any air-borne or water-borne diseases or diseases transmitted from one organism to another in a food chain. There are many benefits of the biological solid waste treatment and some of them are: the minimized quantity of waste substance, waste control, eradicating any disease-causing pathogens, generation of biogas, composting, anaerobic digestion, bio drying, mechanical biological treatment, microbial fuel cell, phytoremediation, and biofiltration. The final products of the biological solid waste treatment may be recycled to obtain organic fertilizers or disposed of in SWDS (Solid Waste Disposal Site) after proper treatment.