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Rational Uses of Medicines (RUM) Introduction RMU is an important, vital and caretaker aspects/subjects include in the pharmacodynamics because of- Body mechanism of persons varies individually (obese, thin, male female, age of person etc.) due to involvement of RUM we decide that- correct medicine for correct individual at correct time for correct diseases. Day to day, human activities are increases like tree cutting, pollution, more use pesticides, natural conditions are changes leads to born new physiological condition of the body so, it is an also responsible for the RUM. According to WHO The rational use of drugs requires the patient receive medication appropriate to their clinical needs, in doses the meet their own individual requirements for an adequate period of time and at lowest cost to them and their community.

Chronic Obstructive Pulmonary Disease (COPD)  Definition: COPD (Chronic Obstructive Pulmonary Disease) is a multifactorial entity with a wide range of clinical manifestations and leading cause of morbidity and mortality globally. It is characterized by progressive, partially reversible airflow obstruction and lungs hyperinflation with significant extra pulmonary manifestations and comorbid conditions. It is a group of progressive lungs disease. It is a preventable and treatable respiratory disorder largely caused by smoking, and long-term exposure to irritating gases and particulate matter. COPD often occurs in people exposed to fumes from burning fuel during cooking and heated in poorly ventilated homes. Symptoms: Symptoms include breathing difficulty (Dyspnoea on exertion), cough, more mucus production (sputum), and wheezing.

  CHAPTER 1 INTRODUCTION               With the unavoidable shortage of fossil fuel sources in the future, renewable types of energy have become a topic of interest for researchers, technicians, investors and decision makers all around the world. New types of energy that are getting attention include hydroelectricity, bio-energy, solar, wind and geothermal energy, tidal power and wave power. Because of their renewability, they are considered as favourable replacements for fossil fuel sources. Among those types of energy, solar photovoltaic (PV) energy is one of the most available resources. This technology has been adopted more widely for residential use nowadays, thanks to research and development activities to improve solar cells’ performance and lower the cost. According to International Energy Agency (IEA), worldwide PV capacity has grown at 49% per year on average since early 2000s. Solar PV energy is highly expected to become a major source of power in the future.