Showing posts with label Sci & Tech. Show all posts
Showing posts with label Sci & Tech. Show all posts

Saturday, 16 May 2015

15-may


SBI contactless card

1)      State Bank of India joined its private sector rivals to launch contactless cards using latest near field communication technology (NFC). Called the SBIinTouch cards.

2)      These contactless debit and credit cards are more secure and hassle-free to use at merchant outlets or ATMs and use the NFC technology, which enables users to make payments by waving or tapping the card near the contactless reader instead of swiping or dipping it.

3)      The bank has already issued 1.08 lakh new cards to its customers in the eight largest metros and the remaining customers will get the cards in the following months.

4)      These cards come with a fraud liability cover of Rs.1 lakh.

5)      These cards will be especially targeted towards fast-food outlets, coffee shops and supermarkets where customers make quick transactions.

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Near Field Communication (NFC)

1)      NFC is a set of standards for portable devices. It allows them to establish peer-to-peer radio communications, passing data from one device to another by touching them or putting them very close together.

2)      NFC came out of RFID. RFID, or radio-frequency identification, is the technology used by shipping companies, in large warehouses, and in superstores to keep track of goods. It uses electromagnetic induction in order to transmit information over a short space so that by simply scanning a container a staff member can know what it contains.

3)      It is similar to Wi-Fi or Bluetooth, but unlike those protocols (and like RFID) NFC can be used to induce electric currents within passive components as well as just send data. And it is faster than Bluetooth, in general.

4)      NFC can work with passive devices that don't require their own power supply, such as travel card readers. NFC's data-transmission frequency is 13.56MHz. NFC can transmit data at either 106, 212 or 424 Kbps (kilobits per second).

5)      There are some security issues with NFC, but they are manageable, if not minor. For one thing, if someone can get close enough to you with an NFC reader, they can read off the contents of your NFC-enabled device.

6)      Perhaps the biggest risk to security posed by NFC is that it makes smartphone even more valuable. Putting all of payment info into one device makes the individual even more vulnerable to that device being stolen.
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Thursday, 26 March 2015

Human embryo editing/designer baby - ethical & safety concerns


 
1)      A group of scientists has raised ethical and safety concerns over genetically editing human embryos,

2)      The method has the potential to create that eugenically worrisome concept of the designer baby using specific genes for greater intelligence or specific physical attributes such as blue eyes.

3)      Genome-editing technology offer promising tools to correct disease-genes by snipping away harmful mutations to possibly treat human diseases such as HIV/AIDS, haemophilia, sickle-cell anaemia and forms of cancer.

4)      But when genetic manipulation targets sperms and eggs (the germ line), the changes can be inherited, opening up an array of ethical, legal and health concerns.

5)      It could be exploited for non-therapeutic modifications.

6)      Using genome-editing to manipulate germ cells, could undermine genetic interventions to treat serious debilitating diseases.

7)      Scientists should agree not to modify the DNA of human reproductive cells and a voluntary moratorium in the scientific community could be an effective way to discourage human germline modification.

Tuesday, 24 March 2015

21-mar


Black money bill

1)      The Undisclosed Foreign Income and Assets (Imposition of Tax) Bill, 2015 was tabled in Lok Sabha.

2)      It is a comprehensive new law for specifically dealing with black money stashed abroad, also provides for a separate taxation of such money.

3)      Undisclosed income abroad will no longer be taxed under the Income Tax Act. Tax on all foreign income will have to be paid at the flat rate of 30 per cent without any exemption, deduction, set off or carry forward losses that the Income Tax Act permits.

4)      Wilful evasion : It provides for criminal liability with enhanced punishment of jail for 3-10 years for wilful evasion of tax on foreign income along  with a penalty equal to three times the amount of tax evaded or 90 per cent of the undisclosed income or the value of the asset.

5)      Onus of prove : The onus will be on the accused to prove that he/she is not guilty.

6)       There is a provision for the limited compliance window offer. those availing would have to pay tax at the rate of 30 per cent but concessional penalty would be equal to the tax amount.

7)      Income Tax Return : Failure to file returns of foreign income or assets will attract a penalty of Rs. 10 lakh. Second and subsequent offence will be punishable with rigorous imprisonment of 3- 10 years with a fine of up to Rs. 1 crore.

8)      If passed by the Parliament, it would come into effect from April 1, 2016.

9)      Powers to tax officials : The tax authorities will have powers of discovery and inspection, issue of summonses, enforcement of attendance, production of evidence and impounding of account books and documents.

10)  Undisclosed holdings of less than Rs. 5 lakh at any time during a year not reported out of oversight or ignorance will not entail penalty or prosecution.

11)  The right to appeal will be to the Income Tax Appellate Tribunal and to jurisdictional High Courts and the Supreme Court on substantial questions of law.

12)  To include tax evasion under the proposed legislation as a scheduled offence the Bill proposes to amend the Prevention of Money Laundering Act, 2002.

13)  It also empowers the Centre to enter into agreements with other countries for the exchange of information, recovery of tax and avoidance of double taxation.

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Life of Mass Orbiter Mission

1)      The Mars Orbiter has complete half a year around the Red Planet and is going strong. It was designed for six months of work.

2)      The MOM had done a good amount of mapping and imaging.

3)      It has been taking Martian surface pictures from distances of around 500 km to 70,000 km.

4)      It has mapped the terrain, studied the chemicals present, looked for methane, a sign of ancient or present life, and got a ringside view of a passing comet in October, 2014.

5)      Its signals take 19 minutes to reach Earth one-way, longer than the 11 minutes when it entered the Martian orbit six months ago.

6)      MOM can go on for at least another six months.

7)      Future challenge :

                                I.            MOM will go through a 15- day “blackout” or eclipsed period from June 8 to 22. Communication with earth will be snapped as sun will block the planet from Mars and MOM.

                              II.            During this period, the orbiter must take its own decisions in an autonomous mode and will consume more fuel.

8)      How much longer it will last and with how much fuel will be left will depend on this phase.

Ø  If MOM keeps up its longevity streak, it will next face a “whiteout” a year later when Earth will come between Sun and Mars and communication will go blank again.

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Iran nuke talks

1)      Iran and six world powers (P5 +Germany) broke off nuclear negotiations ahead of schedule to allow members of the Iranian delegation to attend the funeral of their President’s mother.

2)      The United States and Iran are drafting elements of a deal that commits Tehran to a 40 percent cut in the number of machines it could use to make an atomic bomb.

3)      In return, Iranians would get quick relief from some crippling economic sanctions and a partial lift of a U.N. embargo on conventional arms.

4)      Agreement on those details of Iran’s uranium enrichment program could signal a breakthrough for a larger deal aimed at containing the Islamic Republic’s nuclear activities.

5)      The sides ultimately want to reach a full agreement by the end of June.

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Imported coal helps eastern ports

1)      In the wake of Supreme Court-ordered cancellation of coal blocks, there is stepped up demand for imported coal in the country.

2)      This has in turn helped the ports in the East to surpass the annual cargo volume target.

3)      Kamarajar Port in Chennai, Krishnapatnam Port in Andhra Pradesh and Paradip Port in Odisha are the biggest beneficiaries of the rise in coal imports.

4)      These ports have been handling more coal with Madras High Court banning Chennai Port Trust from handling iron ore and coal since September 2011 to check pollution.

5)      These three ports till date handled around 90 million tonnes (MT) of thermal, pet coke and coking coal.

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33 per cent women quota in UT police

1)      The Union Cabinet cleared 33 per cent reservation for women in the direct recruitment for non-gazetted posts of constables to sub-inspectors in the police forces of all Union Territories, including Delhi.

2)      The decision is expected to instill confidence among women, especially in Delhi where crime against women is very high and often the victims are afraid to approach the police as they may have to deal with male police officers.

3)      The decision has also been taken in the light of amendments brought about in the Criminal Procedure Code in the wake of the 2012 gang rape case in Delhi which requires that reports of crimes against women as well as their statements must be collected by women officers only.

4)      Facts : The Delhi Police currently has about 7,000 women police officers, which form merely 8 per cent of its total strength. About 20,000 more women will have to be recruited.

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Wednesday, 11 March 2015

ROTAVAC




1)      Rotavac is first indigenously developed and manufactured rotavirus vaccine, which involved the complete cycle from basic research to product development of this advanced vaccine in India.

2)      Every year, diarrhoea caused by rotavirus results in up to 10 lakh hospitalisations and kills nearly 80,000 children under the age of 5.

3)       Besides causing emotional stress to the affected families, it also pushes many Indian families below the poverty line and also imposes significant economic burden on the country. 

4)      The vaccine has been developed under an innovative public-private partnership model. It involved partnership between the Ministry of Science and Technology, the institutions of the US Government, various government institutions and NGOs in India, supported by the Bill and Melinda Gates Foundation. 

5)      This is the third such vaccine available globally against Rotavirus and, at the current prices, the cheapest. 


 
 

 

Thursday, 12 February 2015

Double-action drugs (the hindu-12feb)


 
1)      These are those drugs whose side effects are not only harmless but prove helpful elsewhere in the body for some other malfunction.

2)      The following are a few double-action drugs

a)      Aspirin : Aspirin is one such double-action drug. Introduced first as a pain-reliever, it has also been found to help dissolve clotting of blood

b)      ELQ 300 : It is  an antimalarial, which acts against the malaria parasite both in the liver stage and when the parasite has already entered the bloodstream as well, making it a double-action drug

c)      Peptide M5 : It is effective against TB and malaria.

d)      Retiganine : It is  used to control convulsion in epilepsy patients, acts also as an effective drug to reduce acute stroke in mice.

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Wednesday, 11 February 2015

'internet.org'

Facebook launches 'internet.org' in India

1)      Facebook has announced a tie-up with Reliance Communications to launch Internet.org in India, becoming the sixth destination apart from Zambia, Tanzania, Kenya, Colombia and Ghana.

2)      The tie-up gives subscribers of Reliance Communications who have Internet-enabled handsets free access to 38 websites – a mix of news, music, education, weather and health sites. The list includes Facebook, Wikipedia, and Reliance Astrology. The lone search option available is Microsoft’s Bing. They can be accessed via an Android app.

3)      According to Reliance Communications, this partnership will not only accelerate internet penetration in India, it will also open new socio-economic opportunities to users in fields like education, information and commerce.

4)      The service has gone live in Maharashtra, Gujarat, Andhra Pradesh, Tamil Nadu, and Kerala. The pan-India launch is planned in three month.
Internet.org
a)      Internet.org is a Facebook-led initiative was launched on August, 2013 with six other founding partners viz. Samsung, Ericsson, Meida Tek, Microsoft, Opera Software and Qualcomm.

b)      It aims to bring affordable Internet access to everybody by increasing affordability, increasing efficiency, and facilitating the development of new business models around the provision of Internet access.

c)    Criticism :
                                i.            Critics see little altruism in Internet.org. Rather they see it as a huge challenge to the neutrality of the Internet.

                              ii.         They're offering a limited version of the internet, one that centers on Facebook, to low-income internet users. That raises real concerns that this is not a charitable effort, but a customer acquisition strategy.

                            iii.            A selective access to the Internet makes it extremely difficult for rivals not part of the service.

                             iv.            The Internet.org model violates most definitions of net neutrality, as it provides access to a limited menu of services claiming to be the Internet rather than providing actual access to the Internet at a low cost.
Net Neutrality
1)      Net neutrality/network neutrality/Internet neutrality/net equality is the principle that Internet service providers and governments should treat all data on the Internet equally, not discriminating or charging differentially by user, content, site, platform, application, type of attached equipment, or mode of communication.

2)      Neutrality proponents claim that telecom companies seek to impose a tiered service model in order to control the pipeline and thereby remove competition, create artificial scarcity, and oblige subscribers to buy their otherwise uncompetitive services.

3)      Example : In December, 2014 Airtel planned to charge VoIP (Voice over Internet Protocol) data i.e. levying charge on skype calls, video and voice chats etc. They could not implement planned changes due to heavy criticism.

Alternative to injections for drug delivery


Scientists at the Indian Institute of Science (IISc) have successfully tested an alternative to injections for drug delivery. The method delivers medicine through tiny capsules when triggered by a micro-shock wave.
Why need alternative drug delivery method?
1)      Developing methods for alternative delivery of drugs has gained importance considering the large number of infections that are spread through contaminated, non-sterilised syringes.
2)      Each year, 1.3 million early deaths are caused by unsafe injections.


Methodology
1)      The tiny bio-capsules are made of a polymer (spermidine-dextran sulfate or Sper–DS). The capsules are very small.
2)      The capsules are loaded with either insulin or the antibiotic ciprofloxacin.
3)      They are then placed on the infection site — for instance, external diabetic wounds — and are triggered by micro-shock waves produced by a handheld machine.
4)      The micro-shock waves last a millionth of a second, and affect a small area. They don’t affect living cells in the body.
5)      A controlled portion of the drug is released with every shock wave (on an average 20 per cent of the medicine is released with every wave). Almost 90 per cent of the drug releases when the particles are exposed to micro-shock waves five times.
Uses
1)      It can be used where there is a need for frequent injections for example diabetes.
2)      This method can help do away with invasive procedures.
3)      Infections by bacteria such as  Staphylococcus (cause of foot infections that people living with diabetes are susceptible to) are lethal as they form a bio-film around the protein in the cell. The shock waves tear this bio-film and aid the treatment.