Gill
A gill (
i/ɡɪl/) is a respiratory organ found in many aquatic organisms that extracts dissolved oxygen from water and excretes carbon dioxide. The gills of some species, such as hermit crabs, have adapted to allow respiration on land provided they are kept moist. The microscopic structure of a gill presents a large surface area to the external environment.
Many microscopic aquatic animals, and some larger but inactive ones, can absorb adequate oxygen through the entire surface of their bodies, and so can respire adequately without a gill. However, more complex or more active aquatic organisms usually require a gill or gills.
Gills usually consist of thin filaments of tissue, branches, or slender, tufted processes that have a highly folded surface to increase surface area. A high surface area is crucial to the gas exchange of aquatic organisms, as water contains only a small fraction of the dissolved oxygen that air does. A cubic meter of air contains about 250 grams of oxygen at STP. The concentration of oxygen in water is lower than air and it diffuses more slowly. In fresh water, the dissolved oxygen content is approximately 8 cm3/L compared to that of air which is 210 cm3/L. Water is 777 times more dense than air and is 100 times more viscous. Oxygen has a diffusion rate in air 10,000 times greater than in water. The use of sac-like lungs to remove oxygen from water would not be efficient enough to sustain life. Rather than using lungs, "[g]asesous exchange takes place across the surface of highly vascularised gills over which a one-way current of water is kept flowing by a specialised pumping mechanism. The density of the water prevents the gills from collapsing and lying on top of each other, which is what happens when a fish is taken out of water."
Gill (name)
Gill may be a surname or given name, derived from a number of unrelated sources;
People with the surname Gill
Gill (disambiguation)
A gill is an aquatic respiratory organ.
Gill or Gills may also refer to:
Place names
Fiction
People
Other uses
Ashok (actor)
Ashok (born on 12 December in Thiruvaiyaru, Thanjavur District, Tamil Nadu) is an Indian film actor who has appeared in Tamil language films.
Early life
Ashok was born into a middle-class family to R. Balakrishnan and Rohini Balakrishnan and has an elder brother, Aroon. Ashok was brought up in Mumbai, Maharashtra and did his schooling at Fatima High School (Vidyavihar) and Vani Vidyalaya (Mulund, Mumbai). He then graduated with Majors in Sociology, Psychology & Hindi Literature from St. Xavier's College, Mumbai.
Career
Ashok is established as the Main Lead (Protagonist - Hero) in feature films in South India, primarily in Tamil. His first step into the Tamil Film Industry was with Muruga, directed by R. T. Neason, which released in 2007, followed by Pidichirukku, directed by Kanagu, was released for Pongal 2008. He also did a cameo for a song in a Malayalam film titled Mulla, directed by Lal Jose and the journey continues...
His current project titled 'Ula' is directed by Mr.Rajan Madhav (Muran fame) where Ashok plays 'Saleem - the Baddie/Villain' for the first time. Other releases in 2015 would be the Thriller - Priyamudan Priya (bilingual-Tamil/Telugu), the lighter vein Romantic Comedy - Kannighapuram Sandhippil and the hard core rugged rustic villager "Karuppan" in the project tentatively titled Vaanam Partha Seemayilae.
Ashok (film)
Ashok (అశోక్) is a 2006 Telugu romantic action film produced by Maharishi Cinema, directed and written by Surender Reddy. It stars N. T. Rama Rao Jr., Sameera Reddy, Prakash Raj and Sonu Sood. A movie about redemption, the titular character must make amends to his father after blaming for the death of his grandmother while meeting a girl who understands him and his burdens. At the same time, he also must battle against a mafia-like organization who hates him.
It was released in India on 14 July 2006 in the Andhra Pradesh and later dubbed in Hindi as Ghayal:The Fighter Man. It was an average grosser at the box office.
Plot
Ashok (NTR) is an auto mechanic worker and fighter who is thrown out of the house due to his rash actions that killed his grandmother. His father (Prakash Raj), is still carrying that anger against him despite him saving her sister from a group of thugs, who wanted to do a forced marriage. He then accidentally met up with a insecure yet talented dancer girl named Anjali (Sameera Reddy), who Ashok falls in love with. On top of it, KK (Sonu Sood), the leader of one of the biggest crime syndicate in Andhra Pradesh, is interested on becoming elected as the district's newest governor. When Anjali witnessed an assassination and falls in love with her, Ashok decides to protect her, causing a one-man war against KK's gang.
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