Saturday, November 27, 2010

International Current Affairs 2010

Current Affairs – October 2010
  • India gets UNSC non-permanent seat:
    The biggest news on the international front for India has been its inclusion into the UNSC as a non-permanent member after a gap of 19 years. Even as India’s acclamation for a non-permanent bench on the body that includes fifteen members in total was an inevitable cessation afterwards Kazakhstan back out of the chase for the Asian bench beforehand in early January. India got an unbelievable 187 of the 191 votes in the UN General Assembly ballot on October 14th 2010. India’s previous spell in the Security Council was way back in 1992. Almost immediately afterwards India’s appointment, Indian agent to the United Nations Hardeep Singh Puri put it straight that New Delhi would make use of this couple of year valid span to build assurance and accord a feeling of aplomb to the five non changing associates (famously known as the P-5) – the United States of America, Russia, Britain, France and China. Considering that Brazil, a running affiliate of the United Nation Security Council, and South Africa and Germany, which got appointed with India, on October 14th were as well in contention for a permanent membership, he stated: ‘Of course everybody of us will attempt to bring into play the two years we need to render our allies a feeling of aplomb and formulate trust and faith so that they are at ease with our role playing in the United Nation Security Council on a continued period of time’.
  • India and Mozambique sign 3 agreements:
    India and Mozambique came together and signed three agreements and a credit band of 500 million United States dollars has been advanced to that nation state for works regarding the infrastructure, agronomics and power during a convention that featured President of Mozambique Armando Guebuza and Prime Minister of India Dr. Manmohan Singh. Guebuza and Singh, who captivated entrustment level converses, resolved to actualize an affiliation following the lines of superior political meeting, deepening of bread-and-butter collaboration, deepening of defense and aegis collaboration, distinctively to get hold of sea lanes in opposition to piracy and, cooperation in competence building and human resource (or workforce) development. “Both of us together accord to the aforementioned Indian Ocean association and we carve up familiar issues. It is in our alternate absorption to ensure the assurance and aegis of sea lanes of communication in the Indian Ocean,” Dr. Manmohan Singh said in a collective journalist statement. India will back the enactment in preparation and setting up organizations in Mozambique to back capacity building in the coal business and will as well back the ability formation for the defense and patrolling personnel of that nation state, the Prime Minister alleged. Conveying worry over the assurance and aegis of sea lanes in Indian Ocean, Guebuza promised India it will accommodate all practical aid to safeguard them.
Current Affairs September 2010
  • Indians freed from Malay traffickers:Not less than 24 Indian men who were discovered bound up in a residence in a Malaysian boondocks were successfully freed from the arrest and two Pakistani men supposedly engaged in a human trafficking guild were detained with immediate effect. “Inquiries into the matter exposed that those people, age-old amid 20 and 30, were from Uttar Pradesh. If the reports of the media are to be trusted, the victims landed on to the capital’s intl. airport four months back, afore getting picked by the accused people who were apparently looking for workers in an industrial unit in Johor,” he said. He further stated that the two men promised the Indian workers appealing wages as the bait. It is once again proved that Malaysia is a magnet for wide spread drug peddling and human trafficking. Unemployed workforce looking out for jobs is brought for added transfers to other Southeast Asian countries and to Australia.
  • Indian to lead FIDE:Indians have already proved their metal in various sports at the international level. Tennis, Cricket, Shooting, Boxing and also Chess. After Vishwanathan Anand, another lot of Indians are about to triumph on the World Chess Podium. D.V. Sundar has been elected has the President of the world body for the sport of chess, FIDE at Russia. Apart from that, the president for the Asian Continent was Mr. Dongre and Commonwealth Chess Federation President was revealed in the name of Mr. B.S. Chahuhan, a press statement by the All India Chess Federation revealed.
  • Make way for the new breed:The new world power calendar for 2010 has once again predicted that New Delhi’s dominance in the world will see acceleration by 2025. Among the able coalition, the country has been placed at the fourth position afterwards the US, China and the European Union. ‘The Global Governance 2025’ was together brought out by the National Intelligence Council (NIC) of the US and the European Union’s Institutes for Security Studies (EUISS). In the current year, the US leads the lot of able countries/regions, cumulatively for about 22 percent of the worldwide supremacy. The US is chased by China at 12 percent, European Union at 16 percent and India at eight percent. India comes next to Japan, Russia and Brazil with beneath than 5 percent apiece. Following these global statistics, by 2025 the ability of the US, EU, Japan and Russia will cut down although that of China, India and Brazil will boost but this surge will see the positions unchanged. By 2025, the United States of America will continue to be the most dominating nation, but it will be possessing just a bit above 18 percent of the global authority. The US will be carefully trailed by China with 16 percent, European Union with 14 percent and India with 10 percent looking to overleap.
Current Affairs - August 2010
  • Mission AccomplishedThe United States have finally started pulling its troops out of Iraq. President Barack Obama has confirmed that the US plans to withdraw significant number of combat troops from Iraq stating that the war was nearing an end. The remaining force of 50,000 soldiers will train Iraqi security forces and provide security for ongoing US Diplomatic efforts.
  • Australia with a hung parliamentAustralians failed to elect a new government in the polls held in August and were left with a hung parliament. The non-result elections between Julia Gillard’s Labor and Abbott’s Liberal party led to the first hung parliament in Australia since World War II. Three key Independents are now in the process of deciding which party to support to form a government.
  • Pakistani cricketers taintedThe Game of cricket gets murkier with alleged match-fixer Mazhar Majeed’s claim of having rigged games played by Pakistan for three years. The British Police recovered cash from hotel rooms of Pakistani players involved in spot fixing. Salman Butt, Mohammad Amir and Mohammed Asif were interviewed and their mobiles confiscated after Majeed’s confession. The Anti-Corruption Unit of the ICC will probe all 82 international matches played by Pakistan during this time. The news came as a bolt for the flood-stricken and violence-plagued country where cricket is the national sport.
  • Pakistan FloodsAnnual monsoons rains have led to flooding in Pakistan leading to the death of 1500 people and rendering thousands homeless. In the worst flooding disaster in 80 years the floodwaters have affected about one-fifth of the country washing away millions of hectares of crops, submerging villages and destroying roads, bridges, schools, electricity and communication setting back the infrastructure by many years. Disease is fast spreading in these flood affected areas and there have been warnings that dams in the south may burst. It is estimated that the floods in Pakistan have displaced people thrice the number displaced during partition.
  • Hike in Visa feeThe Obama Regime has raised H-1B and L1 visa fees to protect its borders from illegal Mexican immigrants. This additional fee would be used to build operating bases and deploy unmanned aerial surveillance to beef up U.S.-Mexico border security. The impact of this hike will be substantial on Indian IT companies that account for approximately 50,000 H1 and L1 visas per year.
  • Mosque near ground ZeroA New York city panel has cleared the way for the construction of a mosque near ground zero that has been causing a political uproar over religious freedom. The proposed construction of the mosque near ground zero has sparked debate all around the country. President Barack Obama, however, supported the right of having a mosque by asserting that Muslims have the same right to freedom of religion as everyone else in America.
  • China to launch space station Having finished the first module of a planned space station and testing its electronics and other systems China is all set to launch it into orbit next year. Changes were being made to the rocket that will carry the 8.5ton Tiangong 1 module into a set orbit. No finishing or manning dates have been given for the space station. The official Xinhua news agency said that The Shenzhou 8 spacecraft and Shenzhou 9 and 10 spacecraft would dock with it in the second half of 2011 and 2012 respectively.
  • Online routeOxford English Dictionary that has been in print for over a century may never appear in print for the future generations. The word reference Bible is likely to loose its existence to its online version. With the digital books becoming popular, the format that the 3rd edition, currently being worked upon, will take is anybody’s guess.
Current Affairs July 2010
  • Japan ElectionsDemocratic Party of Japan suffered a heavy blow in the elections for the upper house of Japan’s Diet (parliament) when it won ten seats fewer than expected thus loosing its majority. DPJ will now have to look for new coalition partners to restore its majority in the upper house and enable it to easily pass laws through the Diet legislature. After breaking the 55 year period of dominance of the Liberal Democratic Party and naming Naoto Kan the new prime minister just a month back the results have baffled the DJP.
  • July 15th Summit, IslamabadFailed talks between Indian Foreign Minister SM Krishna and the Pakistani counterpart Mr. Shah Mehmood Qureshi’s have once again proved that whenever efforts were initiated by India to improve the relations between the two countries. The Pak leaders and officials took deliberate steps to derail the process conveying a clear message to India that the talks can continue only on its terms.
  • Gulf of SpillMore than three months after the April 20 explosion aboard the BP-leased Deepwater Horizon oil platform, which killed 11 workers and sank the rig gushing oil into the Gulf of Mexico, the most severe US environmental disaster ever is close to coming to an end. In an operation called “static kill” 2,300 barrels of mud was forced down into the well’s opening overnight pushing the crude back down to its source. A cap over the wellhead has shut in leaking oil since July 15 and the static kill — also known as bull heading — probably would not have worked without the cap in place.
  • GenocideOmar-al-Bashir, President of Sudan has been charged with three counts of genocide over the Darfur Conflict, he was convicted by the International Criminal Court at The Hague. It is for the first time that a court has accused anyone of genocide.
  • Jacob Lew the new Budget DirectorPresident Barack Obama has chosen Mr. Jacob Lew as his new budget director. This is Mr. Lews second stint with the federal budget.
Current Affairs - June 2010
  • Julia Gillard become Australia’s first women Prime Minister replacing Kevin Rudd following a sudden revolt against him.
  • No more time for sorrow’ written by Robert Beeman. The author predict that terrorist will set off an atom bomb in the USA by 2013.
  • Tuvalu become 187th member of IMF (International Monetary Fund). The island is located in the Pacific Ocean.
  • Kyrgyzstan voted for a new constitution in a referendum. It is Central Asia’s first parliament democracy.
  • G-20 summit held at Toronto, Canada.
Current Affairs - May 2010
  • G-15 summit was held at Tehran on 16-17 May.
  • Bangladesh handed over Ranjan Daimary of the National Democratic Front of Bodoland to India. The group was responsible for serial bombing in Assam in 2008.
  • National League for Democracy (NLD) party of Myannmar’s democracy leader Aung San Sui Kyi was abolished after deadline to re-register as a political party was over.
  • EU-IMF provide a $ 1 trillion rescue package to the Greece to resolve its debt crises.
  • Pakistan successfully test fired two short range ballistic missiles, Shaheen I( range 650 Km) and Ghazani (range 290 Km) capable of carrying nuclear war heads and striking Indian cities.
Current Affairs - April 2010
  • Belgium became the Europe’s first country to ban burqa.
  • Pakistan’s National assembly passed a bill that takes away the President’s power to dissolve parliament, dismiss a elected government and appoint the three services Chiefs. Pakistan’s parliament passes 18th amendment which was later signed by Presient cutting President’s powers.
  • USA and Russia signed Strategic Arms Reduction Treaty(START) that allowed a maximum of 1550 deployed overheads, about 30% lower than a limit set in 2002. The treaty was signed in the Progue Castle.
  • Emergency was imposed in Thailand.
  • Nuclear Security Summit held at Washington.It was a 47 nation summit wherein P.M. announced setting up of a global nuclear energy centre for conducting research & development of design systems that are secure, proliferation resistant & sustainable.
  • PM visit USA & Brazil, a two nation tour. He attended Nuclear Security Summit in USA & India- Brazil-S.Africa(IBSA) and Brazil-Russia-India-China(BRIC) summit in Brasilia (Brazil).
  • 16th SAARC Summit held in Bhutan in 28-29 April. The summit was held in Bhutan for the first time. It is the silver jubilee summit as SAARC has completed 25 years. The summit central theme was ‘Climate Change’. The summit recommended to declare 2010-2020 as the “Decade of Intra-regional Connectivity in SAARC”. The 17th SAARC summit will be held in Maldives in 2011.
Current Affairs - March 2010
  • China will launch in 2011 unmammed space mode ‘ Tiangong I’ for its future space laboratory.
  • US internet giant Google close its business in China.
  • India’s largest telecom service provider Bharti Airtel buy Zain’s Africa operations for an enterprise value of $ 10.7 billion (Rs 49000 crore). Currently Bharti’s non-India operations include Sri Lanka & Bangladesh.
  • Russia abolished two of its eleven time Zones.
Current Affairs - February 2010
  • NATO forces carried out Marjah operation (dubbed Moshtarak) against Taliban forces in Afghanistan.
  • European Union summit was held in Brussels. EU & IMF decided to giving support to Greece in its struggle to bring its ballooning budget deficit under control. EU President is Herman Van Rompuy.
  • Iran’s President Mahmood Ahmedinejad declared that Iran had produced first batch of 20 % enriched uranium and now Iran became a nuclear state.
  • Iran launched ‘Kavoshger -3 rocket’ capable of carrying a satellite. It carried a mouse, worms & two turtles.
Current Affairs - January 2010
  • Gilgit Baltistan region elected its first Chief Minister Mehdi Shah on the basis of Gilgit Baltistan Empowerment & Self Governance Order 2009. The new appointed CM declare the Gilgit Baltistan region as 5th province of Pakistan. The Indian Govt has, however, of the view that the region was part of J & K, and thus objected to the remarks of CM.
  • Venezuela devalued it currency ‘Bolivar’.
  • A massive earthquake strike Haiti, the Carribbean nation. Capital of Haiti is Port-au-Prince.
  • Mahinda Rajapaksa won a second term as Sri Lanka’s President. He belongs to Sri Lanka Freedom Party.
Source:- www.civilserviceindia.com

First In India

First in India

1. British Governor General of Bengal -Warren Hastings
2. Governor General of Independent India –Lord Mountbatten
3. Commander-in-chief of Free India General –Roy Bucher
4. Cosmonaut –Sqn. Ldr. Rakesh Sharma
5. Emperor of Moghul Dynasty in India –Babar
6. Field Marshal –S. H. F. J. Manekshaw
7. Indian Governor General of Indian Union –C. Rajagopalachari
8. Indian I.C.S. Officer –Satyendra Nath Tagore
9. Indian Member of Viceroy’s Executive Council –Sri S.P. Sinha
10. Indian to swim across English Channel –Mihir Sen
11. Indian woman to swim across-English Channel –Miss Arati Saha
12. Man to climb Mount Everest –Tenzing Norgay
13. Man to climb Mount Everest without Oxygen –Phu Dorjee
14. Man to climb Mount Everest twice –Nwang Gombu
15. Nobel Prize winner –Rabindra Nath Tagore
16. President of Indian National Congress –W. C. Banerjee
17. President of Indian Republic -Dr. Rajendra Prasad
18. Talkie Film –Alam Ara (1931)
19. Test Tube Baby (Documented) –Indira
20. Viceroy of India Lord Canning
21. Woman Minister of Indian Union –Rajkumari Amrit Kaur
22. Woman Chief Minister of State –Mrs. Sucheta Kriplani
23. Woman Governor –Mrs. Sarojini Naidu
24. Woman President of Indian National Congress –Dr. Annie Besant
25. Woman Prime Minister –Mrs. Indira Gandhi
26. Woman Speaker of a State Assembly –Mrs. Shanno Devi
27. Prime Minister of India –Pt. Jawahar Lal Nehru
28. Muslim President of Indian Union –Dr. Zakir Hussain
29. Speaker of Lok Sabha –G. V. Mavlankar
30. Woman to climb mount Everest –Bachhendri Pal
31. Woman Judge in Supreme Court –Mrs. Meera Sahib Fatima Biwi
32. Woman Chief Justice of a High Court –Smt. Leela Seth
33. Indian Woman to go in space (Now U.S. Citizen) –Kalpana Chawla
34. The first Indian weightlifter to win bronze medal in Olympics - Karnam Malleshwari (Sydney, in 2000)
35. The First Indian World Chess Champion –Vishwanathan Anand
36. India’s first paperless Newspaper –The News Today (Launched on Jan. 3, 2001)
37. India’s First woman Merchant Navy Officer –Sonali Banerjee
38. The first Dalit Speaker of the Lok Sabha –G. M. C. Balyogi
39. The first Vice-President of India to die in harness –Krishna Kant
40. The first Indian woman cricketer to score double century –Mithali Raj (August 2002 playing against  England)
41. The first woman Air Vice-Marshal –P. Bandopadhyaya
42. The first Indian to be appointed as United Nations Civilian Police Advisor –Ms. Kiran Bedi
43. The first astronaut of Indian origin to perish aboard U.S. space shuttle in a tragic accident –Dr. Kalpana Chawla (Columbia space shuttle, Feb. I, 2003)
44. The first woman to be appointed Deputy Governor of Reserve Bank of India-K.J. Udeshi (appointed on June 10, 2003)
45. The first Indian girl to register a win in a Wimbledon tournament –Sania Mirza (2003)
46. The first Indian lady to win a medal in World Athletic Championship –Anju Bobby George (Aug. 2003)
47. The first woman Chairman and Managing Director of NABARD –Mrs. Ranjana Kumar
48. The highest individual test scorer of India –Virendra Sehwag ( 319 runs against Sauth  africa)
49. The first Indian cricketer to make double centuries five times- Rahul Dravid
50. The first Orissa woman to top I.A.S. –Smt. Roopa Misra (Indian Civil Services Exam., 2003)
51. The first Sikh Prime Minister of India –Dr. Manmohan Singh
52. The first woman Director General of Police of a State –Kanchan C. Bhattacharya (DGP Uttaranchal)
53. The first woman to be appointed as the crime branch chief –MeeriJ Borwankar (took over as crime branch chief of Mumbai police)
54. The first woman to reach the rank of Lt. General in the Indian army –Puneeta Arora (Commandant, Armed Forces Medical College, Pune)
55. The first Indian to cross seven important seas by swimming –Bula Chaudhury
56. The first woman to become Indian Air Force’s first woman Air Marshal –Air Marshal Padma Bandhopadhyay
57. The first youngest MP, at the age of 25 years –Dharmendra Yadav (Mainpuri : Samajwadi Party MP)
58. India’s first woman athlete to win WTA open Tennis title –Sania Mirza (Feb. 2005, Hyderabad)
59. The first Indian to set a world record of ever having reached the highest of heights yet in a hot balloon –Vijaypath Singhania (Nov. 26, 2005. 69852 ft.)
60. The first wonder child of Orissa only about 4 years and a half of age completes a race of 65 km. -Budhia (May 2006)
61. The first woman Commissioner of Police of an Indian metro –(Chennai Metro Police) Letika Saran
62. The first Indian to Ski to the North Pole –Ajeet Bajaj (April 26, 2006)
63. The first sportsman ever to win Gold Medal in Shooting in the World Shooting Championship –Abhinav Bindra (July 24, 2006)
64. The first person of Indian origin to win the Miss Great Britain title –Preeti Desai (2006)
65. The first woman President of the Republic of India –Pratibha Patil

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First Person in India

First women of INDIA

First in World

1. Chairman of Peoples Republic of China - Mao-Tse-Tung
2. President of the Chinese Republic – Dr. Sun Yat Sen
3. President of U.S.A – George Washington
4. Chinese Traveller to India – Fahein
5. Foreign Invader to India – Alexander the Great
6. Person to reach South Pole – Amundsen
7. Person to reach North Pole – Robert Pearey
8. Person in Space – Yuri Gagarin
9. Person on Moon – Neil Armstrong
10. Lady to climb Mount Everest – Junko Taibei
11. European to visit China – Marco Polo
12. Place where atom bomb was dropped – Hiroshima
13. Man to walk in Space – Alexei Leonov
14. Woman cosmonaut in Space – Valentina Tereshkova
15. Woman Prime Minister of a country - Mrs. Srimavo Bhandarnaike
16. Woman President of a country - Maria Estela Peron
17. Woman to Command a Space Mission - Colonel Eileen Collins (U.S.A.)
18. The first residents of International Space station - Bill Shepherd (USA),Yuri Gidzanko and Sergei Krikalev (Russia)
19. The first blind man to scale Mt. Everest - Erik Weihenmayer(USA, May 25, 2001)
20. The first Muslim woman to become the Secretary General of Amnesty International lrine –Zubeida Khan
21. The first space astronaut to go into space seven times till date - Jerry Ross (U.S.A.)
22. The first South African to become the second space tourist - Mark Shuttleworth
23. The first woman Prime Minister of South Korea Ms. Chang Sang
24. The first youngest grandmaster of the world in chess - Sergey Karjakin (Ukraine)
25. The first adventurer flying successfully across the English Channel without aircraft - Felix Baumgartner (July 2003)
26. China’s first man in space - Yang Liwei
27. The first Muslim woman to receive Nobel Prize - Shirin Ebadi (Nobel Peace Prize 2003)
28. The woman with the highest individual Test score making a new world record - Kiran Baloch (Pakistani cricketer, scoring 242 runs playing women’s cricket test against West Indies in Karachi in March, 2004)
29. The first woman of the world to climb Mt. Everest four times - Lakpa Sherpa (Nepali)
30. The first woman to cross seven important seas of the world by swimming - Bula Chaudhury (India)
31. The first aircraft pilot to round the entire world non-stop by his 2 engine aircraft in 67 hours -Steve Fossett (March 2005)
32. The first woman to be appointed as a Governor of a province in Afghanistan - Habiba Sorabhi
33. The first woman of the world to swim across five continents – Bula Chaudhury (India) (April 2005)
34. The first woman athlete to touch 5.0 meter mark in pole vault - Ms. Yelena Isinbayeva(Russian, July 2005)
35. The first Hindu Chief Justice of Pakistani Supreme Court Justice – Rana Bhagwan Das
Took over on Sept. 2, 2005 as Acting Chief Justice

International Awards and Prizes

Nobel Prizes-The Nobel prizes lore awarded each year under the will of Alfred Nobel, Swedish chemist, engineer and inventor of dynamite, who died in 1896. The award is given to those who have made most outstanding contribution in the field of physics, chemistry and physiology or medicine, who have produced most distinguished literary work of an idealist tendency and those who have contributed most towards world peace. The Nobel Prize for economics was first awarded in 1969 and was established by Riksband, the Central Bank of Sweden. Other awards started in 1901.The fund is managed by a board of directors, the head of which is appointed by the Swedish Government.
Magsaysay Awards-This award was instituted in memory of the Philippines President Ramon Magsaysay who died in an air crash in 1957. The award carries a gold medal, $ 50,000 and a certificate a and is awarded for the following five services : (i) Government service; (ii ) Public service; (iii) Community Leadership; (iv) Journalism, Literature and Communicative Arts; (v) International Understanding. The awards have been given from 1958 onwards.
Kalinga Prize- This award is presented each year by the United Nations Educational Scientific and Cultural Organization (UNESCO) to a person with a distinguished career of service in the interpretation of science and research to the public.The prize was instituted by Biju Patnaik, industrialist and politician who is the founder and Chairman of the Kalinga Foundation Trust in the State of Orissa. UNESCO awarded the prize for the first time in 1952. The prize comprises an award of 1,000 UK pounds.
Templeton Foundation Prize- This is awarded by the Templeton – foundation for progress in religion and was instituted in 1972. The main intention of the prize is to call attention and provide recognition to ideas, insights, actions and accomplishments which have been or may be instrumental in widening man’s love in God.
Pulitzer Prizes-This has been established by Joseph Pulitzer an American publisher, in 1917 to encourage literature and journalism in USA. The awards are given in the fields of General Reporting, National Reporting, Feature Writing, Poetry, Biography, Fiction, Drama, History, Special Local Reporting, International Reporting and for public service.
E.M. Forster Award-This award is given to an Indian author for contribution to English literature and was instituted by a Publishing Company.
Jawaharlal Nehru Award for International Understanding-This award was instituted by the Government of India. It is an annual award given for outstanding contribution to the promotion of international understanding, good will and friendship among the peoples of the world. The award carries an amount of Rs. 15 lakh and a citation.
Indira Gandhi Peace Award -The government prize of Rs. 33 lakh or its equivalent in foreign exchange in memory of Mrs. Indira Gandhi for outstanding contributions in the field of peace, disarmament and development. The administration of the prize has been entrusted to the Indira Gandhi Memorial Trust.
Simon Bolivar Prize- The $25,000 Prize is awarded by UNESCO every two years to reward activity of outstanding merit which, in accordance with the ideals of Simon Bolivar has contributed to freedom, independence and dignity of people and to the strengthening of new international economic, social and cultural order.
The Booker Prize- Established in 1968, the 50,000 pound Booker Prize, is awarded to the best novel published for the first time each year in UK by a British Publisher. The prize is open to novels written in English by citizen of the British Commonwealth,Republic of Ireland and South Africa.
Gandhi Peace Prize- Institute on the occasion of the 125th birth anniversary of Mahatma Gandhi in 1995, the annual award is the highest given by the Government of India in any field. The international peace prize, a Rs. 1 Crore worth award, was launched for recognizing socials economic and political transformation through non-violence and other Gandhian Methods.

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“சனி கிரகத்தில் ஆக்சிஜன் உள்ளது” நாசா விஞ்ஞானிகள் தகவல் ]


அமெரிக்காவின் விண் வெளி மையமான “நாசா” சனி கிரகத்துக்கு காசினி விண்வெளி ஓடத்தை கடந்த 2004-ம் ஆண்டு அனுப் பியது. அந்த ஓடம் சனி கிர கத்தை சுற்றி பறந்து ஆய்வு மேற்கொண்டு வருகிறது. இந்நிலையில் சனி கிரகத்தின் அருகேயுள்ள ரியா விண்வெளி பாதையில் ஆக்சிஜன் இருப்பது தெரிய வந்துள்ளது.



இப்பாதையில் காந்த சக்தி உள்ளது. அது தான் ஆக்சிஜனை தாங்கி பிடித்துள்ளது.   அது ஐஸ் கட்டி நிலையில் உள்ளது என விஞ்ஞானிகள் அறிவித்துள்ளனர். இவை ஐஸ் கட்டிகளில் மூலக்கூறுகளாக உள்ளன என்றும் கூறியுள்ளனர். இதனால் சனி கிரகத்தை சுற்றியுள்ள பகுதிகள் ஐஸ் கட்டிகளால் உள்ளது.   மேலும் அங்கு கார்பன்டை ஆக்சைடு உள்ளது என்றும் அறிவித்துள்ள

Thursday, August 5, 2010

BRAIN

                                  Introduction to the Brain


THE FUNCTIONS OF THE BRAIN
The human brain is a complex organ that allows us to think, move, feel, see, hear, taste, and smell. It controls our body, receives information, analyzes information, and stores information (our memories).

The brain produces electrical signals, which, together with chemical reactions, let the parts of the body communicate. Nerves send these signals throughout the body.
SIZE OF THE HUMAN BRAIN
Human brainThe average human brain weighs about 3 pounds (1300-1400 g).
At birth, the human brain weighs less than a pound (0.78-0.88 pounds or 350-400 g). As a child grows, the number of cell remains relatively stable, but the cells grow in size and the number of connections increases. The human brain reaches its full size at about 6 years of age.
COMPOSITION OF THE BRAIN
NeuronThe brain consists of gray matter (40%) and white matter (60%) contained within the skull. Brain cells include neurons and glial cells.
The brain has three main parts: the cerebrum, the cerebellum, and the brain stem (medulla). 

NOURISHMENT OF THE BRAIN
Although the brain is only 2% of the body's weight, it uses 20% of the oxygen supply and gets 20% of the blood flow. Blood vessels (arteries, capillaries, and veins) supply the brain with oxygen and nourishment, and take away wastes. If brain cells do not get oxygen for 3 to 5 minutes, they begin to die.
Cerebrospinal fluid (CSF) surrounds the brain.
THE NERVOUS SYSTEM
CNSThe brain and spinal cord make up the central nervous system (CNS). The brain is connected to the spinal cord, which runs from the neck to the hip area. The spinal cord carries nerve messages between the brain and the body.
The nerves that connect the CNS to the rest of the body are called the peripheral nervous system.
The autonomic nervous system controls our life support systems that we don't consciously control, like breathing, digesting food, blood circulation, etc. 

PROTECTION
The cells of the nervous system are quite fragile and need extensive protection from being crushed, being infected by disease organisms, and other harm. The brain and spinal cord are covered by a tough, translucent membrane, called the dura mater. Cerebrospinal fluid (CSF) is a clear, watery liquid that surrounds the brain and spinal cord, and is also found throughout the ventricle (brain cavities and tunnels). CSF cushions the brain and spinal cord from jolts.
Human skullThe cranium (the top of the skull) surrounds and protects the brain. The spinal cord is surrounded by vertebrae (hollow spinal bones). Also, some muscles serve to pad and support the spine.
More subtly, the blood-brain barrier protects the brain from chemical intrusion from the rest of the body. Blood flowing into the brain is filtered so that many harmful chemicals cannot enter the brain. 



STRUCTURE AND FUNCTION OF THE HUMAN BRAINHuman brain

Human brain, lateral viewThe brain has three main parts, the cerebrum, the cerebellum, and the brain stem. The brain is divided into regions that control specific functions.
THE CEREBRUM:
Frontal Lobe
  • Behavior
  • Abstract thought processes
  • Problem solving
  • Attention
  • Creative thought
  • Some emotion
  • Intellect
  • Reflection
  • Judgment
  • Initiative
  • Inhibition
  • Coordination of movements
  • Generalized and mass movements
  • Some eye movements
  • Sense of smell
  • Muscle movements
  • Skilled movements
  • Some motor skills
  • Physical reaction
  • Libido (sexual urges)
Occipital Lobe
  • Vision
  • Reading
Parietal Lobe
  • Sense of touch (tactile senstation)
  • Appreciation of form through touch (stereognosis)
  • Response to internal stimuli (proprioception)
  • Sensory combination and comprehension
  • Some language and reading functions
  • Some visual functions
Temporal Lobe
  • Auditory memories
  • Some hearing
  • Visual memories
  • Some vision pathways
  • Other memory
  • Music
  • Fear
  • Some language
  • Some speech
  • Some behavior amd emotions
  • Sense of identity
Right Hemisphere (the representational hemisphere)
  • The right hemisphere controls the left side of the body
  • Temporal and spatial relationships
  • Analyzing nonverbal information
  • Communicating emotion
Left Hemisphere (the categorical hemisphere)
  • The left hemisphere controls the right side of the body
  • Produce and understand language
Corpus Callosum
  • Communication between the left and right side of the brain
THE CEREBELLUM
  • Balance
  • Posture
  • Cardiac, respiratory, and vasomotor centers
THE BRAIN STEM
  • Motor and sensory pathway to body and face
  • Vital centers: cardiac, respiratory, vasomotor

Hypothalamus
  • Moods and motivation
  • Sexual maturation
  • Temperature regulation
  • Hormonal body processes
Optic Chiasm
  • Vision and the optic nerve
Pituitary Gland
  • Hormonal body processes
  • Physical maturation
  • Growth (height and form)
  • Sexual maturation
  • Sexual functioning
Spinal Cord
  • Conduit and source of sensation and movement
Pineal Body
  • Unknown
Ventricles and Cerebral Aqueduct
  • Contains the cerebrospinal fluid that bathes the brain and spinal cord
BRAIN CELLS
Printout: Label a Neuron
Human brain
The brain and spinal cord are made up of many cells, including neurons and glial cells. Neurons are cells that send and receive electro-chemical signals to and from the brain and nervous system. There are about 100 billion neurons in the brain. There are many more glial cells; they provide support functions for the neurons, and are far more numerous than neurons.
There are many type of neurons. They vary in size from 4 microns (.004 mm) to 100 microns (.1 mm) in diameter. Their length varies from a fraction of an inch to several feet.

Neuron
Neurons are nerve cells that transmit nerve signals to and from the brain at up to 200 mph. The neuron consists of a cell body (or soma) with branching dendrites (signal receivers) and a projection called an axon, which conduct the nerve signal. At the other end of the axon, the axon terminals transmit the electro-chemical signal across a synapse (the gap between the axon terminal and the receiving cell). The word "neuron" was coined by the German scientist Heinrich Wilhelm Gottfried von Waldeyer-Hartz in 1891 (he also coined the term "chromosome").
The axon, a long extension of a nerve cell, and take infromation away from the cell body. Bundles of axons are known as nerves or, within the CNS (central nervous system), as nerve tracts or pathways. Dendrites bring information to the cell body.
Myelin coats and insulates the axon (except for periodic breaks called nodes of Ranvier), increasing transmission speed along the axon. Myelin is manufactured by Schwann's cells, and consists of 70-80% lipids (fat) and 20-30% protein.
The cell body (soma) contains the neuron's nucleus (with DNA and typical nuclear organelles). Dendrites branch from the cell body and receive messages.
A typical neuron has about 1,000 to 10,000 synapses (that is, it communicates with 1,000-10,000 other neurons, muscle cells, glands, etc.).
DIFFERENT TYPES OF NEURONS
There are different types of neurons. They all carry electro-chemical nerve signals, but differ in structure (the number of processes, or axons, emanating from the cell body) and are found in different parts of the body.
  • Sensory neurons or Bipolar neurons carry messages from the body's sense receptors (eyes, ears, etc.) to the CNS. These neurons have two processes. Sensory neuron account for 0.9% of all neurons. (Examples are retinal cells, olfactory epithelium cells.)
  • Motoneurons or Multipolar neurons carry signals from the CNS to the muscles and glands. These neurons have many processes originating from the cell body. Motoneurons account for 9% of all neurons. (Examples are spinal motor neurons, pyramidal neurons, Purkinje cells.)
  • Interneurons or Pseudopolare (Spelling) cells form all the neural wiring within the CNS. These have two axons (instead of an axon and a dendrite). One axon communicates with the spinal cord; one with either the skin or muscle. These neurons have two processes. (Examples are dorsal root ganglia cells.)
LIFE SPAN OF NEURONS
Unlike most other cells, neurons cannot regrow after damage (except neurons from the hippocampus). Fortunately, there are about 100 billion neurons in the brain.


GLIAL CELLSGlial cells make up 90 percent of the brain's cells. Glial cells are nerve cells that don't carry nerve impulses. The various glial (meaning "glue") cells perform many important functions, including: digestion of parts of dead neurons, manufacturing myelin for neurons, providing physical and nutritional support for neurons, and more. Types of glial cells include Schwann's Cells, Satellite Cells, Microglia, Oligodendroglia, and Astroglia.
Neuroglia (meaning "nerve glue") are the another type of brain cell. These cells guide neurons during fetal development.

The Spinal CordHuman brain
Spine and BrainThe spinal cord is a bundle of nerves that connects the brain to other parts of the body. It is protected by a series of doughnut-shaped bones called vertebrae, which surround the spinal cord.
The human spinal cord is about 43-45 cm long and approximately as wide as a human finger. There are 13,500,000 neurons that transmit electro-chemical signals in the spinal cord. The cord weighs aproximately 35 grams. The vertebral column (bones) that supports it is about 70 cm long and has 31 segments and 31 pairs of spinal nerves.
Spinal Cord Vertebrae
  • 7 cervical (neck) segments
  • 12 thoracic segments
  • 5 lumbar segments
  • 5 sacral segments
  • 4 fused coccygeal segment
ANIMAL BRAIN COMPARISONSHuman brain
BRAINS OF VARIOUS ANIMALS 
ANIMALBRAIN WEIGHT (G)BODY WEIGHT% OF BODY WEIGHTNUMBER OF NEURONS
SPERM WHALE7800 g15 tons=30,000 pounds= 13500 kg0.06 % 
ELEPHANT6000   
BOTTLE-NOSED DOLPHIN1500 g500 kg0.3 % 
HUMAN ADULT1300-1400150 pounds= 68 kg=68000 g2 %100 Billion
HORSE532   
CHIMPANZEE420   
HUMAN BABY350 - 400   
DOG (BEAGLE)729 to 18 kg0.5 % 
CAT30   
SQUIRREL22   
ALLIGATOR8.4250 kg0.003 % 
OWL2.2   
RAT2400 gm0.5 % 
TURTLE0.3   
VIPER0.1   
GREEN LIZARD0.08   




GLOSSARY
A

acetylcholine - a neurotransmitter that carries nerve impulses across a synapse from one neuron to another or from a neuron to a muscle.

afferent - carrying something (like a nerve impulse) toward the central part.
amygdala - a part of the brain (and part of the limbic system) that is used in emotion.
anterior - towards the front.
anterior commissure - a small fiber that connects the right and left cerebral hemispheres of the brain.
arachnoid - one of the three membranes that protects the brain and spinal cord. The space between the arachnoid and the pia (another membrane) is filled with cerebrospinal fluid, protecting the brain from physical blows and providing the brain with nutrients.
association cortex - any part of the cortex in which information is analyzed, processed, or stored.
astroglia or astrocyte - a type of glial cell that supports neurons.
autonomic nervous system - controls our life support systems that we don't consciously control, like breathing, digesting food, blood circulation, etc.
axon - the long extension of a neuron that carries nerve impulses away from the body of the cell.
axodendritic synapse - a synapse formed by contact between a presynaptic axon and a postsynaptic dendrite.

B

basal ganglia - groups of hundreds of thousands of neurons at the base of the cerebrum and in the upper brainstem; they help control well-learned movements (like walking) and sensation.
blood-brain barrier - the blood-brain barrier protects the brain from chemical intrusion from the rest of the body. Blood flowing into the brain is filtered so that many harmful chemicals cannot enter the brain.
brain - the organ in the body that is responsible for thought, memory, sensory interpretation, movement, and other vital functions.
brainstem or brain stem - the base of the brain. This part of the brain connects the brain's cerebrum to the spinal cord. The brain stem controls many automatic and motor functions. The brain stem is composed of the medulla oblongata, the pons, the midbrain, and the reticular formation.

C

cauda equina - (meaning "horse's tail" in Latin) the bundle of nerve roots below the end of the spinal cord.
caudal - toward the tail.
cell body (soma) - the cell body of the neuron; it contains the nucleus.
central nervous system (CNS) - the brain and spinal cord
central sulcus - a large groove in the brain that separates the frontal and parietal lobes
Human brain, lateral viewcerebellum - the part of the brain below the back of the cerebrum. It regulates balance, posture, movement, and muscle coordination.
cerebral aqueduct - the part of the ventricular system that connects the third and fourth ventricles
cerebral cortex - the outer layer of the cerebrum, composed of six cell layers of deeply folded and ridged gray matter.
cerebral hemisphere - one side of the cerebrum, the left or right side of the cerebrum.
cerebrospinal fluid (CSF) - a clear, watery liquid that surrounds and protects the brain and spinal cord, and is also found throughout the ventricle (brain cavities and tunnels). CSF cushions the brain and spinal cord from jolts. This fluid circulates through the brain and the spinal canal.
cerebrum - the largest and most complex portion of the brain. It controls thought, learning, and many other complex activities. It is divided into the left and right cerebral hemispheres that are joined by the corpus callosum, which communicates between the two hemispheres. The right side of the brain controls the left side of the body, and vice versa. Each cerebral hemisphere is divided into four lobes: the frontal lobe (responsible for reasoning, emotions, judgment, and voluntary movement); the temporal lobe (contains centers of hearing, smells, and memory); the parietal lobe (responsible for touch and spoken language ability), and the occipital lobe (responsible for centers of vision and reading ability).
choroid plexus - vascular structures within the ventricular system that produce cerebrospinal fluid.
corpus callosum- a large bundle of nerve fibers that connect the two cerebral hemispheres.
cortex - the outer layer of the cerebrum, composed of six cell layers of deeply folded and ridged gray matter.
cranial nerves - 12 pairs of nerves that carry information to and from sense organs, muscles and internal organs. The cranial nerves include: olfactory nerve (smell), optic nerve (sight), oculomotor nerve (eye movement, dilation of pupil), trochlear nerve (eye movement), trigeminal nerve (sensation from the head and chewing muscles), abduccens nerve,
cranium - the top of the skull; it protects the brain. The cranium and the facial bones make up the skull.
CSF (cerebrospinal fluid) - a clear, watery liquid that surrounds the brain and spinal cord, and is also found throughout the ventricle (brain cavities and tunnels). CSF cushions the brain and spinal cord from jolts.

D

dendrites - the branching structure of a neuron that receives messages.
dorsal - on the back or upper surface.
dorsal root - a bundle of nerve fibers that bring information to the spinal cord.
dura mater - a tough, translucent membrane that protects the brain and spinal cord.

E

efferent - carrying something (like a nerve impulse) away from the central part.
electroencephalogram (EEG) - a graphical record of the electrical activity of the brain. Electrodes are placed on the scalp to obtain this information.
"Eloquent" brain - The parts of the brain that control the senses, speech, and motor functions.
endocrine gland - ductless glands that secrete endocrine hormones; examples include the pituitary and thyroid.

F

fornix - a pathway that connects the hippocampus and the mamillary bodies.
frontal lobe - the top, front regions of each of the cerebral hemispheres. They are used for reasoning, emotions, judgment, and voluntary movement.

G

ganglion - a group of neuron bodies (not in the brain or spinal cord)
glial cells - nerve cells that form a supporting network for the neurons in the brain. The word "glia" comes from the Greek word for glue.
gray matter - central nervous tissue that is relatively dark in color (in contrast to white matter) because of the relatively high proportion of nerve cell nuclei present
gyrus - (plural is gyri) - these are high areas on the brain that are separated by fissures.

H

hormones - biochemical substances that are produced by specific cells, tissues, or glands in the body. Hormones regulate the growth and functions of cells and tissues in the body. A examples of a hormone is insulin, which is secreted by the pancreas. Hormones were first discovered by the British scientists William Bayliss and Ernest Starling in 1902.
hypothalamus - a region in the upper part of the brainstem that acts as a relay to the pituitary gland - it controls body temperature, circadian cycles, sleep, moods, hormonal body processes, hunger, and thirst. The hypothalamus is part of the limbic system and works with the pituitary gland.

I

inferior colliculus - a structure in the midbrain that is used in hearing

L

lateral - to the side
left hemisphere - the left half of the cerebrum - it is the center for speech and language. In some left-handed people, however, the right hemisphere controls speech.
limbic system - the interconnected areas of the brain that are used in emotions and some other behaviors.

M

medulla oblongata - the lowest section of the brainstem (at the top end of the spinal cord); it controls automatic functions including heartbeat, breathing, swallowing, etc.
meninges - a series of three protective membranes (the dura matter, the arachnoid, and the pia) that cover the brain and the spinal cord.
microglia - a type of glial cell in the CNS
midbrain (mesencephalon) - a middle area of the brainstem that contains many important nerves (including the origins of the third and fourth cranial nerves which control eye movement and eyelid opening).
motor cortex - the part of both frontal lobes of the brain that controls voluntary muscle movements.
motoneurons (multipolar neurons) - neurons responsible for movement - the cell bodies of these neurons are located within the brain or spinal cord and the axons are located in muscle fibers
myelin - a fatty substance that covers axons.
myelin sheath - a fatty substance that surrounds and protects some nerve fibers.

N

neuroglia - connective or supporting tissues of the nervous system.
Neuronneuron - a nerve cell. Neurons have specialized projections (dendrites and axons) and communicate with each other via an electrochemical process. The word "neuron" was coined by the German scientist Heinrich Wilhelm Gottfried von Waldeyer-Hartz in 1891 (he also coined the term "chromosome").
neuroscience - the study of the brain and the nervous system.
neurotransmitters - chemicals that transmit nerve impulses between neurons. Some neurotransmitters include acetylcholine, dopamine, endorphin, epinephrine, serotonin, and histamine.
node of Ranvier - one of the many gaps in the myelin sheath - this is where the action potential occurs during saltatory conduction along the axon

nucleus - the organelle in the cell body of the neuron (and all cells) that contains the genetic material of the cell (DNA in chromosomes). It is where DNA (deoxyribonucleic acid) replicates itself, and where RNA (ribonucleic acid) is made.

O

occipital lobe - the region at the back of each cerebral hemisphere that contains the centers of vision and reading ability.
optic chiasm - controls vision and the optic nerve. It is the area in the front of the brain where the optic nerves cross one another.

P

paleoneuroloy - the study of fossils brains (from brain casts, called endocasts).
parietal lobe - the middle lobe of each cerebral hemisphere between the frontal and occipital lobes; it contains important sensory centers.
peripheral nervous system - the part of the nervous system that includes the cranial nerves and the spinal nerves.
pia - the innermost layer of the meninges. It is adjacent to the surface of the brain and the arachnoid.
pineal body - a pinecone-shaped gland-like structure located in the brain. It produces melanin and influences the onset of puberty.
pituitary gland - a gland attached to the base of the brain that secretes hormones.
plexus - a network of nerves or veins
pons - the part of the brainstem that joins the hemispheres of the cerebellum and connects the cerebrum with the cerebellum. It is where the four pairs of cranial nerves originalte: the fifth (facial sensation); the sixth (eye movement); the seventh (taste, facial expression, eyelid closure); and the eighth (hearing and balance)
posterior - towards the back
posterior fossa - the part of the skull that contains the brain stem and the cerebellum.
proprioception - the response to internal stimuli.
pseudounipolar cells - a type of neuron that has two axons (instead of one axon and one dendrite). One axon is oriented towards the spinal cord, the other axon is oriented toward either skin or muscle.

R

reticular formation - a network of nerve cells in the brainstem that are involved in maintaining sleep or wakefulness.
right hemisphere - the right half of the cerebrum - it processes visual information.

S

Schwann's cells - cells that produce myelin
sensory cortex - any part of the brain that receives messages from a sense organ (like the eyes, nose, tongue, or ears) or messages of touch and temperature from anywhere in the body.
sensory neuron (bipolar neuron) - an afferent nerve cell that carries sensory information (like sound, touch, taste, smell, or sight) to the central nervous system.
Human skull
skull - the bones that comprise the head.
soma (cell body) - the cell body of the neuron; it contains the nucleus.
somatosensory cortex - an area of the sensory cortex in the parietal lobes that receives messages of touch, temperature, and certain other bodily sensations.
CNSspinal cord - a thick bundle of nerve fibers that runs from the base of the brain to the hip area, running through the spine(vertebrae).
stereognosis - the appreciation of form through touch
sulcus (plural sulci) - a long groove on the surface of the brain
suprachiasmatic nucleus - the area of the hypothalamus that controls circadian rhythms (day and night cycles and the biological clock) and reproduction cycles.
synapse - a structure where an impulse passes from one neuron to another across a gap. The word "synapse" was coined by Sir Charles Scott Sherrington in 1897.

T

tactile sensation - the sense of touch
tectum - the dorsal (top) portion of the midbrain (mesencephalon)
tegmentum - ventral (bottom) part of the midbrain (mesencephalon)
temporal lobe - the region at the lower side of each cerebral hemisphere; contains centers of hearing and memory.
thalamus - a small structure at the top of the brainstem that serves as a relay center for sensory information, pain, attention, and alertness.

V

ventral - lower or underneath
ventricle - four small hollow spaces in the brain that are filled with cerebrospinal fluid - they contain the choroid plexus, which produce cerebrospinal fluid (CSF).
vertebra (plural vertebrae) - one of many small bones that make up the spine. The spinal cord runs through the vertebrae.
viscera - organs in the body

W

white matter - heavily myelinated central nervous tissue that is light in color (in contrast to gray matter) - it consists mostly of axons covered with the insulating lipid-protein sheath myelin.