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Value of Time

Time is precious. We can remember a forgotten thing. We can regain lost health. We can earn lost money. But we cannot catch time. Time has wings. Time once gone has gone forever. It returns never. So make the best use of time at your disposal. Human, the most superior creature of nature, has limited years to live. He should live these gainfully. He should make maximum use of every moment. Even if one lives for a hundred years, it is not much time. So, one should not waste it in idleness. Some people say that it is very difficult to pass time. It is because they do not know how to make good use of time. They play cards for several hours. They waste their time. Others sit and waste their time in idle gossips. The students should spend most of their time in study. In spare time they should play some games. A person who does not Care for time, the time will not care for him. Time is the greatest gift of God. Those who utilize the time in good works are the examples fo...
Recent posts

Pollution Crisis in Urban Areas

Pollution is a very serious issue of twenty-first century modern World. In simple terms, contamination of nature is called pollution that causes adverse effects. Air, water, noise and soil pollutions are typical types of pollution. However, urban areas are much developed than rural areas with high class modern facilities; and ironically, urban areas are also bears high level of Pollution. The main causes of pollutants in urban areas are transportation technologies such as automobiles, power production technologies such as industrial heating and cooling, coal burning power plants like Badarpur Thermal Power Station (BTPS), Badarpur, Delhi and poor waste management, etc. The industrial revolution which began from Britain in 18 th centaury putting a major impact on urban pollution by waste materials from industries like carbon dioxide, carbon monoxide, nitrogen dioxide, sulphur dioxide, particulate matters (PM10 /PM2.5), chlorofluorocarbons, hydrocarbons, organohalides and other ...

BMR

Basal Metabolic Rate The basal metabolic rate (BMR) is the amount of energy needed to body when the body is at complete mental and physical rest, i.e. in a room with comfortable temperature and humidity, awake and sitting in a reclining position and the digestive system is inactive. It is essentially the minimum energy required to maintain the heart rate, respiration, kidney function and all other body functions. There are three equations used to calculate BMR by calculator, which are as follows: 1. Mifflin - St . Jeor equation (For men) BMR = 10W + 6.25H - 5A + 5 (For women) BMR = 10W + 6.25H - 5A - 161 2. Katch - McArdle formula BMR = 370 + 21.6(1 - F)W 3. Revised Harris -Benedict equation (For men) BMR = 13.397W + 4.799H - 5.677A + 88.362 (For women) BMR = 9.247W + 3.098H - 4.330A + 447.593 Note : W = body weight in kg H = body height in cm A = Age F = body fat in percentage Normal BMR value Men = 1600 kc...

Polyvinylidene difluoride (PVF2)

Polyvinylidene difluoride (PVF2) is a piezoelectric material. It is one of the important material in medical ultrasound engineering. It is available in thin membrane that look like plastic wrap. This material is used for constructing miniature hydrophones, which are a small ultrasound transducers for measuring the acoustic output of medical ultrasound equipment. The advantage of polyvinylidene difluoride material is that of very small transducer detectors, useful for probing and measuring the beam of diagnostic transducers, can be made from it.

Eupnea

Normal Respiratory Rate Respiration is one of the essential function of body from which exchange of oxygen and carbon dioxide take place in body. The normal respiratory rate, called Eupnea , is the number of breaths a person takes every minute. Eupnea plays a viral role in keeping the balance of oxygen and carbon dioxide in body. The normal respiratory rate for a healthy adult is 12 to 15 respirations per minute. The breathing rates of below 12 or above 15 can means a disruption in normal breathing rate for an infant up to 1 years of age is 30 to 60 respirations per minute. To measure normal breathing/respiration rate, it is essential to measure it at rest conditions because their are many factors like emotions, exercise, etc. that affect respiration  process. To take an accurate measurement watch the person's chest rise and fall. One complete breath have one inspiration, when the chest rise, followed by one expiration, when chest falls. Count this patt...