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Volume 3, Issue 9, March 2013

About the Cover

Alexander Graham Bell
Bell was a Scottish-born American scientist and inventor, most famous for his pioneering work on the development of the telephone. A pioneer in the field of telecommunications, Alexander Graham Bell was born on March 3rd, 1847, in Edinburgh, Scotland. His education was largely received through numerous experiments in sound and the furthering of his father’s work on Visible Speech for the deaf. Bell worked with Thomas Watson on the design and patent of the first practical telephone. In all, Bell held 18 patents in his name alone and 12 that he shared with collaborators. Alexander's father, Melville, followed in his father's footsteps, becoming a leading authority on elocution and speech correction. Young Alexander was groomed early to carry on in the family business, but he was ambitious and headstrong, which conflicted with his father's overbearing manner. Then, in 1862, Alexander's grandfather became ill. Seeking to be out of his father's control, Alexander volunteered to care for the elder Bell. The experience profoundly changed him. His grandfather encouraged his interests, and developed a close relationship. The experience left him with an appreciation for learning and intellectual pursuits, and transitioned him to manhood. Bell's "electrical speech machine" paved the way for the Information Superhighway. Bell was committed to the advancement of science and technology.

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DISCOVERY OF THE MONTH

Cardiac Arrest and its Causes

Balasubramanian J, Narayanan N

Sudden cardiac arrest is the sudden, unexpected loss of heart function, breathing and consciousness. Sudden cardiac arrest usually results from an electrical disturbance in your heart that disrupts its pumping action, stopping blood flow to the rest of your body. Sudden cardiac arrest is different from a heart attack, which occurs when blood flow to a portion of the heart is blocked. However, a heart attack can sometimes trigger an electrical disturbance that leads to sudden cardiac arrest.

Discovery, 2013, 3(9), 33-35

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RESEARCH

Comparative performance of Cassava Starch to PAC as Fluid Loss Control Agent in Water Based Drilling Mud

Egun IL, Achadu M Abah

Cassava starch was extracted from 46.5kg of TMS 98/0505 species of fresh cassava tubers and characterized to establish the physicochemical properties The analytical results showed the following; moisture content (4.11%), pH (7), dispersion (poly dispersed), bulk density (617.34kg/m33) and particle size distribution (fine). It was also compared to the standard Polyanionic Cellulose (PAC) used in the oil and Gas industry for water based mud (WBM) formulation. The result also indicated closer similarity between TMS 98/0505 and PAC. It was therefore employed in the production of drilling mud.

Discovery, 2013, 3(9), 36-39

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Macro-invertebrate community diversity in relation to water quality status of Kunda River (M.P.), India

Shailendra Sharma, Sudha Dubey, Rajendra Chaurasia, Vibha Dave

Physico-chemical parameters and macro-invertebrate fauna of Kunda River at Khargone district Madhya Pradesh, India were studied from August 2010 to January 2011. Surface water and benthic samples were collected monthly from two sampling stations along the river. Mean values of surface water temperature of 29.66°C, pH 8.34, Transparency 40.56, Dissolved Oxygen 7.19mg/l, Biological Oxygen Demand (BOD) 4.29mg/l, Total Hardness 119.33, Alkalinity 307.49, chloride 26.72mg/l, nitrate 0.25mg/l, phosphate 0.36mg/l, Analysis of variance (ANOVA) showed significant difference (p<0.05) in the mean values of surface water temperature, pH, DO, BOD, from the two stations.

Discovery, 2013, 3(9), 40-46

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