Sliding filament model of muscle contraction. A myofibril (also known as a muscle fibril) is a basic rod-like unit of a muscle cell. Muscles are composed of tubular cells called myocytes, known as muscle fibers in striated muscle, and these cells in turn contain many chains of myofibrils.
Sustainable management is a resource management technique that seeks to make any harvesting or consumption of natural resources as sustainable as possible. Thus, the main goal is to replenish any resources as fast as they are depleted.n order to accomplish its goal, sustainable management often looks at two different factors: the rate of consumption and the rate of replenishment. In many cases, the goal is to keep these two factors in equilibrium.
While there is no single standardized definition, there are many opinions and beliefs as to what it means for a business to be sustainable. While the study of sustainability evolves, The Evergreen Group has decided to use the following definition: A sustainable business is one that operates in an environmentally responsible way. Its products and business processes are such that no negative environmental impact is felt as a result of their existence. The details of sustainable business lie in chemistry and material science, ecology and environmental science.