Guide To Preventive Maintenance Procedure For Central Air Conditioning Systems For Building Application (part 3)

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• Principles Of Work Simplification When Doing Household Task

  Identify the principles of work simplification and enumerate some work simplification techniques.The principles of work simplification must be used to fish household task with the least amount of energy and time expended.

  1. Do not do any task that you do not have to do.
  2. Try to do one task as you do another.
  3. Keep everything with easy reach.
  4. Use the best tool.
  5. Make both hands work.
  6. Use the best posture. Sit to work whenever possible but watch posture. Provide a chair of proper height and good back support.

• Ways Of Propagating Ornamental Plants

  There are two ways of propagating ornamental plants. These are sexual and asexual . In sexual propagation, seeds are planted until they grow into seedlings. In asexual propagation, roots, cuttings of branches, twigs, or leaves are planted and grown into new plants.

  Sexual propagation of plants

• How Does A Radar Works

  Explaining the concepts behind the radar system and how it forecasts weather. Long ago, people tried to make weather forecasts based on folklores and their observations of changes in the clouds and winds. Later on, weather instrument were invented that helped in observing weather elements. From these observations, people made their forecasts.

• Mechanism Of Breathing

  Breathing is the taking of air into the lungs and forcing it out. You inhale when you take in air and exhale when you force it out. You breathe whether you are awake or sleep and will continue to do so far as long as you live. Your body breathes automatically. There are nerves from the brain that enable you to breathe without thinking about it. Sometimes you may voluntarily hold you breathe but you cannot do this for long. Breathing is a function of the respiratory system but it requires the coordinated activities of the brain and muscles.

• Common Ailments Of The Respiratory System (Part 2)

• Common Daily, Weekly And Occasional Household

  Responsible family members should perform some task daily, weekly, or occasionally to maintain cleanliness and orderliness in the home. A workplace prepared and followed regularly makes housekeeping easier and lighter.

  Common Daily Household Tasks

  Daily household tasks include dusting the furniture, cleaning the toilet, bedroom, living room, dining room, kitchen, and bathroom, keeping family items in their proper places, and sweeping the floor and yard. Waste baskets and trash cans must be emptied.

• Homogeneous And Heterogeneous Mixtures

  Everyone is familiar with lemon juice. You can make lemon juice by adding sugar and the strained juice of lemon to water. Lemon juice can be prepared in different variations. You may put three tablespoonfuls of sugar and juice from three or four pieces of lemon in a glass of water, or two tablespoonfuls of sugar and juice from two or three pieces of lemon in a glass of water.
  Lemon juice is a mixture. The amount of each material in a mixture need not have to be the same. Substances whose components come in different proportions are called mixtures.

• Characteristics Of An Adequate House

  A structure with spaces to satisfy the family member’s basic human needs is a house. Shelter is one of the basic needs of man. Man needs a house for protection, privacy, relaxation, and socialization. A house can be made of concrete, metals, bricks, wood and local materials like bamboo, rattan or other materials strong enough to withstand the forces of nature. It is a place where family lives and which consists of roofs, walls, rooms, floors, and things that are seen, touched, and felt.

• A Home Is A Happy Family

  Do you remember these famous lines, "Midst pleasures and palaces, though we may roam, be it so humble there's no place like home". These lines remind us how important home is to each and everyone of us. The home is not only a shelter to protect us from the rain and the sun, bit it is a place where we begin life, learn how to walk, run talk, get along with other people, and know the many things around us.

  An ideal home is one that is :

• Importance Of Decomposers In The Nutrient Cycle

  Nutrient cycle is the process by which nutrients are continuously passed on between the nonliving environment and living things.

  All living things need food. Plants that produce the food which people and animals eat also need food. To make the food they need, plants get some chemical nutrients from the nonliving environment.

  Although there are so many plants and these plants make food continuously, the nutrients that they get from nonliving environment are never used up. Why?