Computers Essay Example | Topics and Well Written Essays - 250 words - 3

Computers - Essay Example Today, schools, companies, hospitals and factories rely on computers for the various occupational practices. Computers are very essential for scientific research. They open access to many research opportunities. Students can computers to access online journals and books, making it easy to access the information needed. Additionally, the online tutorials and study websites offer explanations on what students and researchers require. On the same note, computers have made it easy for the instructors and the learner to exchange information constantly. Computers have also helped in the communications sector. People use the computers to relay information. Through the internet, people can connect with one another through the computers. The information passes through a very short time. Computers have enhanced efficiency in the information and communication sector, hence reduced time wastage due to immediate feedback. On the opposing side, overdependence on computers has its negative effects which include making people lazy and eliminates the rate at which people think. Additionally, computers pose safety hazards to the users, especially when mishandled. Children use computers to play games, chat and watch movies: this can change their attitudes, reduce reading time and make them intolerant to instructions. They also make people less interactive with others, since they spend several hours on their computers without getting involved in outdoor activities, hence becoming

Psychopharmacology Essay Example | Topics and Well Written Essays - 500 words

Psychopharmacology - Essay Example COX-2 inhibitors block the action of an enzyme used throughout the body to make a large and diverse family of compounds called prostanoids that are involved in regulating myriad physiological actions, including inflammation, blood clotting and protection of the stomach lining from the destructive effects of digestive acids (Brown, 2004). Congress is questioning why the FDA didn't force Merck to study Vioxx's heart risk sooner. Merck is facing hundreds of lawsuits and potentially billions of dollars in damages from Vioxx. Pfizer, the makers of Celebrex, which is a rival of Vioxx, have not yet pulled the popular painkiller off the market, although Celebrex also increases cardiovascular diseases. Celebrex, approved by the Food and Drug Administration in 1998 for arthritis pain, has been prescribed to 27 million Americans and is the world's most widely prescribed arthritis drug ("Pfizer cites", 2005). Zoloft, Prozac and Paxil, known as selective serotonin reuptake inhibitors or SSRIs, are antidepressants and act by enhancing the signals in nerves that transmit messages with serotonin, a neurotransmitter. , which are chemicals that are used to relay and modulate electrical signals between a neuron and another cell, are removed from the synaptic cleft by a process called reuptake. These drugs act on the neurotransmitter serotonin within the cell by delaying the reuptake process, thereby increasing the serotonergic effect. The regulators at the Food and Drug Administration ordered that all antidepressant drugs carry a prominent ‘black box’ warning to alert doctors that the medications increase the risk of suicidal thoughts and behavior among children and adolescents.