Wednesday, December 19, 2012

Facebook CEO Zuckerberg donating $500M in stock

SAN FRANCISCO (AP) -- Facebook CEO Mark Zuckerberg said Tuesday he is donating nearly $500 million in stock to a Silicon Valley charity with the aim of funding health and education issues.

Zuckerberg donated 18 million Facebook shares, valued at $498.8 million based on their Tuesday closing price. The beneficiary is the Silicon Valley Community Foundation, a nonprofit that works with donors to allocate their gifts.

This is Zuckerberg's largest donation to date. He pledged $100 million in Facebook stock to Newark, N.J., public schools in 2010, before his company went public earlier this year. Later in 2010, he joined Giving Pledge, an effort led by Microsoft Corp. founder Bill Gates and Berkshire Hathaway Inc. CEO Warren Buffett to get the country's richest people to donate most of their wealth. His wife, Priscilla Chan, joined with him.

In a Facebook post Tuesday, Zuckerberg, 28, said he's "proud of the work" done by the foundation that his Newark donation launched, called Startup: Education, which has helped open charter schools, high schools and others.

With the latest contribution, he added, "we will look for areas in education and health to focus on next." He did not give further details on what plans there may be for funds.

"Mark's generous gift will change lives and inspire others in Silicon Valley and around the globe to give back and make the world a better place," said Emmett D. Carson, CEO of the foundation.

Source: http://news.yahoo.com/facebook-ceo-zuckerberg-donating-500m-235902892.html

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Monday, December 17, 2012

Use Paper Towels Instead of Hand Dryers To Better Fight Bacteria

Use Paper Towels Instead of Hand Dryers To Better Fight BacteriaA lot of dryers sell you on how hygienic they are since you never have to touch them. However, a recent study suggests that paper towels are in fact the more hygienic choice.

The study, published by the Mayo Clinic last August, is a review of 12 other studies published since 1970. The result? Paper towels help fight more bacteria, thanks to friction.

The differences in bacterial numbers after drying with air dryers and paper towels could be due to other factors rather than the percentage of dryness alone. Friction can dislodge microorganisms from the skin surface during both hand washing and drying. Antimicrobial agents in soaps have too little contact time to have bactericidal effects during a single use or with sporadic washings, making friction the most important element in hand drying.

That doesn't mean you should swear off all air dryers?sometimes there just isn't any paper around. But if you're somewhere hygiene is particularly important, like a hospital or a school, then choosing to dry your hands with paper towels could be a great extra precaution.

The Hygienic Efficacy of Different Hand-Drying Methods: A Review of the Evidence | Mayo Clinic Proceedings via Conversable Economist

Image: Nick Gray (Flickr)

Source: http://feeds.gawker.com/~r/lifehacker/full/~3/1OV-BWIAng8/use-paper-towels-instead-of-hand-dryers-to-better-fight-bacteria

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95% Argo

All Critics (243) | Top Critics (43) | Fresh (232) | Rotten (11)

'Argo' is one of the best movies of the year.

Argo has that solid, kick-the-tires feel of those studio films from the 70s that were about something but also entertained. Only it's as laugh outright amusing as it is sobering.

The movieland satire is laid on thick, but it's also deadly accurate. Schlock has never seemed so patriotic, and Arkin and Goodman have rarely been so good.

Argo is a rollicking yarn, easily the most cohesive and technically accomplished of Affleck's three films so far, but a part of me wishes the director hadn't cast himself in the lead role.

If nothing else, it proves that every so often, the CIA can pull something off - and that yes, Canadians are just about the nicest people on the planet.

The film is a whopper of a tale, one designed for Oscar nominations, Best Picture and Best Director among them.

This may be the most geek-friendly movie that never did the rounds at Comic-Con.

When Tony (Ben Affleck) lands in Tehran and trains the frightened Americans to play their parts as a Canadian film crew, Argo compares the ruses run by governments and movie studios.

The whole thing is paced like a whip, and the third act may literally be the most suspenseful piece of film I've ever seen - and yes, I have seen Rear Window. Recommended without any reservation for every and any cinemagoer.

A terrific supporting cast, especially the non A-list actors, make the dramatic license taken justified and redeem Affleck for miscasting himself in the hero's role.

A brilliant thriller that's based on a historical incident, 'Argo' is one of the best films of 2012.

A wonderfully lively and engrossing movie ...

An enthralling and deliciously entertaining movie -- and a deserved triumph for its star and director.

The details make for a rip-roaring story, which Affleck invests with old-school directorial ?lan.

Ben Affleck leaps on to the A-list of directors with this relentlessly entertaining thriller, combining comedy and nerve-jangling suspense to maximum effect.

If you're a nailbiter, bring gloves, because the suspense will see you reach your knuckles.

Surprisingly enjoyable, given that you may have little prior commitment to this story and only mildly fancy Affleck.

Affleck skilfully turns the screw of suspense, gaining added traction from an extremely convincing recreation of the setting and period.

Ben Affleck's movie tells an amazing but true story set against the context of the Iranian hostage crisis.

Talent borrows and genius steals, but Affleck does something in between: he mimics.

It's impossible to be bored by a story this good, especially with that cast.

Part of what makes this headspinning story believable is the fact that it pans out in an oddly uncomplicated way.

The shaggy and bearded Ben Affleck, barely recognisable from his former self, gives a great lead performance. Understated, intense and steely-eyed, Affleck has the screen presence of legendary actor/director Clint Eastwood.

Affleck the director is utterly sure-footed with an instinctive feel for characterization, tension and pacing as he builds the action towards a nail-biting climax.

A dum-tight thriller demonstrating that Affleck is one of the most accomplished directors working in Hollywood today.

Source: http://www.rottentomatoes.com/m/argo_2012/

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GlaxoSmithKline wins U.S. approval for new flu vaccine

(Reuters) - U.S. health regulators have approved a new four-strain seasonal influenza vaccine made by GlaxoSmithKline Plc, the company said on Monday.

The U.S. Food and Drug Administration has approved Fluarix Quadrivalent to immunize children age 3 and older and adults against flu virus subtypes A and B contained in the vaccine.

It is the first intramuscular vaccine to protect against four influenza strains. Three-strain flu vaccines currently administered help protect against the two most common A virus strains and the B strain expected to be predominant in a given year, the company said.

Since 2000, however, two B virus strains have circulated to varying degrees each season, meaning patients infected with the B virus not contained in the vaccine were not immunized.

Fluarix Quadrivalent helps protect against the two A strains and adds coverage against a second B strain, the company said.

Three-strain vaccines "have helped protect millions of people against flu, but in six of the last 11 flu seasons, the predominant circulating influenza B strain was not the strain that public health authorities selected," said Dr. Leonard Friedland, head of clinical development and medical affairs for Glaxo's North American vaccines program.

"Fluarix Quadrivalent will help protect individuals against both B strains and from a public-health standpoint, can help decrease the burden of disease."

Glaxo said it will make the vaccine available in time for the 2013-14 flu season and plans to fulfill orders for its trivalent, or three-strain, vaccines. Healthcare providers traditionally order flu vaccines about a year in advance of each flu season.

Fluarix Quadrivalent is not currently approved or licensed in any country outside of the United States.

(Reporting By Toni Clarke; Editing by Maureen Bavdek)

Source: http://news.yahoo.com/glaxosmithkline-wins-u-approval-flu-vaccine-160123301--sector.html

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On school shootings (Offthekuff)

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Source: http://news.feedzilla.com/en_us/stories/politics/top-stories/271106108?client_source=feed&format=rss

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Sunday, December 16, 2012

8 Ways to Earn True Customer Love | BizBest

Many businesses are content if their customers seem ?generally satisfied? overall. Others aspire to something more?? they seek the kind of passionate customer satisfaction that inspires glowing thank you letters and backyard fence (or social media) recommendations.

If you suspect customers aren?t quite feeling that kind of love for your business, you?ve probably got some work to do. In a sense, customers who aren?t wholeheartedly with you might as well be against you. Customers who lack the love factor can actually be more damaging to your business than those who do business with your competitors.

That?s because people who aren?t yet customers of yours might at least try you out in the future. But those who are blas? about your business have already tried out your product or service and found you lacking in some respect. That?s not good.

Earning true customer loyalty ? the kind that translates into recommendations and referrals ? takes commitment, innovative ideas, energy and a little old-fashioned elbow grease. You, as business owner, must clarify for everyone else just what it is you want to accomplish with customers. This includes partners, employees, vendors and others who support what your business does.

And lest we forget, customer ?love? also translates into a better bottom line. A recent American Express survey found that 75% of small business customers are willing to spend more with businesses that provide great service ? up from just 58% two years ago.? And here?s the kicker: A hefty 78% of consumers have bailed on a transaction or not made an intended purchase because of poor service.

Here are eight things that will help customers find the love:

1. End the obstacle course

Take the initiative to find out when customers need (or will soon need) service or help ? before they have to ask. The magical customer service moment is when your call, email or postcard offering help arrives as the precise moment the customer needs it.? Meanwhile, make it clear to each and every customer exactly how they can get service or help from your business when they need it ? including a name and contact information.

2. Avoid customer hot potato

Whenever possible, the person who speaks to a customer first should ?own? that customer for the duration of their visit. Companies send signals of disrespect by passing off a customer to ?someone who can better help you with your problem.?? Yeah, right.

3. Streamline your website

Many small business websites seem cobbled together ? a collection of different areas with different terminology and logic for getting around. Figure out one look and message you want to send, and stick with that.

4. Fix (for real) the big issues bugging your customers

Millions of businesses ask, ever so thoughtfully, ?How can we improve?? That?s good. But how many really listen and act on what they hear? Customers read inaction as lack of caring and won?t bother to respond the next time you ask. A business that makes changes based on what it hears from customers earns more love.

5. Invest in customer loyalty

Customers have had it with loyalty programs that are just too much work or offer skimpy benefits. Try offering customers something without them having to ask or pay extra for it.

6. Offer customers real choices

Don?t bind customers into the fake choice of letting them ?opt out? of something. Let them know up front that they can decide to get emails, offers or whatever from you and give them a choice.

7. Make someone responsible

Maybe it?s you. Or perhaps you make it part of someone else?s responsibilities. Either way, you call attention to your company?s passionate and persistent commitment to customer care. Be sure to reward employees publicly for exceptional customer care performance.

8. Put your money where your mouth is

Define specific customer care objectives that are right for your business, put some resources behind them, and figure out how you will measure the results.

Copyright ? 2000-2012 BizBest? Media Corp.? All Rights Reserved.? Follow @140Main

Source: http://www.bizbest.com/8-ways-to-earn-true-customer-love/

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New technique could make cell-based immune therapies for cancer safer and more effective

Dec. 16, 2012 ? A team led by Michel Sadelain, MD, PhD, Director of the Center for Cell Engineering at Memorial Sloan-Kettering Cancer Center, has shown for the first time the effectiveness of a new technique that could allow the development of more-specific, cell-based immune therapies for cancer. Their findings were reported online December 16 in Nature Biotechnology.

Immunotherapies -- which make use of patients' own immune cells that have been augmented in the laboratory -- have shown some early success in the treatment of blood cancers including certain types of leukemia. For most cancers, however, cell-based therapies have been harder to develop, in large part because it has been difficult for investigators to train immune cells to specifically attack cancer cells without damaging normal, healthy cells in the body.

The treatment approach, known as adoptive cell transfer (ACT), involves engineering an immune cell called a T cell. In the ACT process, T cells are removed from a patient and a gene is added to allow the T cells to recognize a certain antigen on the surface of a cancer cell. The enhanced cells are grown in the laboratory and then infused back into the patient to seek out and attack cancer cells.

"We are getting better at working with these T cells and enhancing them so that we can get a powerful immunological response against cancer," Dr. Sadelain says. "The dilemma now is that we are concerned with limiting these responses and making them as targeted as possible to avoid potentially harmful side effects."

Cancer cells overproduce certain antigens, which can help T cells to recognize them, but those same antigens are often found in lower levels on healthy cells. "There are very few antigens, if any, that are found only on cancer cells," Dr. Sadelain explains.

"Now we are bringing in a completely new concept," he adds. "If there is no single unique antigen that is found on the surface of the cancer cell we want to target, we instead create T cells that recognize two different antigens found on the tumor cell -- a signature that will be unique to that type of cancer -- and only attack cells with both antigens, sparing the normal cells that express either antigen alone."

The new technique makes use of receptors known as chimeric antigen receptors (CARs), which allow T cells to target antigens on the surface of a tumor cell, coupled with another type of receptor called a chimeric costimulatory receptor (CCR), by which the T cells can recognize a second antigen.

The CAR and the CCR work together through a process known as balanced signaling, in which the presence of either antigen on its own is not enough to trigger the immune response. Only tumor cells that carry both antigens will be targeted.

In the Nature Biotechnology study, the team created T cells that carried a CAR for an antigen called PSMA and a CCR for an antigen called PSCA. Both PSMA and PSCA are found on prostate cancer cells. The investigators then generated mouse models of prostate cancer and infused the mice with the engineered cells. They found that the T cells attacked only tumors that carried antigens for both PSMA and PSCA.

"We are the first to test this concept and show that it works," Dr. Sadelain concludes. "We plan to develop clinical trials based on this approach, although we have not yet decided whether the first study will be a trial for prostate cancer or for a different type of cancer using two other antigens. Ultimately, our goal is to create targeted immunotherapies that are both potent and safe for patients."

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The above story is reprinted from materials provided by Memorial Sloan-Kettering Cancer Center, via EurekAlert!, a service of AAAS.

Note: Materials may be edited for content and length. For further information, please contact the source cited above.


Note: If no author is given, the source is cited instead.

Disclaimer: This article is not intended to provide medical advice, diagnosis or treatment. Views expressed here do not necessarily reflect those of ScienceDaily or its staff.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/top_news/~3/WxtcA1kjTVA/121216132507.htm

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Mole Rats Promote Biodiversity

Cover Image: December 2012 Scientific American MagazineSee Inside

Mole rats may not be pretty, but their mounds of dirt are crucial for biodiversity


Mole rats?known for their small eyes, grublike bodies and sometimes naked skin?mostly live underground. Yet they seem to dramatically affect aboveground ecological processes. A recent report in the Journal of Zoology showed that the burrowing activity of mole rats strongly influences the composition of plant communities in one of Africa's biodiversity hotspots, the Cape fynbos region in South Africa.

In the process of excavating their burrows, mole rats churn soil together with vegetation, uneaten food, and their own urine and feces. They then eject this blend of organic and inorganic matter from their burrow, forming characteristic mounds.

Scientists at the University of Pretoria found that mound soil was a lush nutrient resource for plants. It had high concentrations of nitrogen, magnesium, potassium, sodium and calcium, relative to control samples. The disturbed soil was also made of finer particles, as if an expert gardener had aerated it and primed it to retain a maximum amount of water.

Plants cannot pass up a good mineral hotspot, and scientists found that mole rats significantly boosted plant diversity on their mounds?perhaps by uprooting or burying common plants and allowing new ones the opportunity to colonize the site. Yet the total amount of plant material?the ?plant biomass??actually decreased on mound sites. Both mole rats and cattle prefer to graze in areas with enriched soil, which can limit the biomass of even the lushest carpet of plants. Also, the rodents sometimes bury living vegetation with soil when they eject refuse from their burrows, effectively removing those plants from the biomass tally.

The study is a reminder that animals can affect their environments in unexpected ways and that extinctions could have consequences no one has predicted.

COMMENT ATScientificAmerican.com/dec2012

This article was originally published with the title Cryptic Gardeners.

Source: http://rss.sciam.com/click.phdo?i=e6fa89ffe3aadf2f096dfe16184409b6

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Children in Connecticut rampage were 6, 7; shot multiple times

NEWTOWN, Connecticut (Reuters) - The 20 children killed at a Connecticut elementary school on Friday in one of the worst mass shootings in U.S. history were all aged six and seven, according to a list of victims' names released on Saturday.

The brazen attack, in which a heavily armed 20-year-old gunman forced his way into Sandy Hook Elementary School and shot his victims multiple times, shattered the quiet, suburban community of Newtown, Connecticut.

The state's chief medical examiner, Dr. H. Wayne Carver II, described the attack that left a total of 28 people dead, including the shooter and his mother, "the worst I have seen."

Asked to describe the young victims - one of whom had just celebrated her seventh birthday on Tuesday, Carver said, "They were wearing cute kid stuff."

"They were first graders. It's the kind of stuff you'd send your kids or your grandkids out the door to first grade in," he told reporters.

All the shootings he was aware of were committed with a rifle, Carver said.

The dead included eight boys, 12 girls, and six women aged 27 to 56, authorities said.

"All the wounds that I know of at this point were caused by the long weapon," Carver said.

The list of names released did not include the shooter, identified by law enforcement sources as Adam Lanza, or his mother, who Carver confirmed was killed nearby.

Adam Lanza killed his mother, Nancy, at her home and then drove to the school where he continued his shooting, law enforcement officials said. Multiple guns were registered to Nancy Lanza and some of them were found at the scene, a Connecticut law enforcement official said.

President Barack Obama, who a day earlier was moved to tears on national television by the tragedy, called for "meaningful action to prevent more tragedies like this," but stopped short of specifically calling for tighter gun-control laws.

The nation has experienced many mass shootings, but rarely have the victims been so young.

CHRISTMAS TREE MEMORIAL

Town fire officials set up 26 Christmas trees, decorated with stuffed animals, near the school as a memorial to the victims - many of whom were children who may have been hoping for such toys as their own holiday presents.

"These children were so young, so innocent," said Mary Fellows, 49, who attended a midday memorial service at a church near the school. "I just can't imagine."

Rabbi Shaul Paver said he had spent time with Veronika Pozner, whose 6-year-old son Noah, was among the victims.

"She said that she didn't know how she was going to go on, and we encouraged her to focus on her other four children that need her and not to try to plan out the rest of her life, just take a deep breath right now," Paver said.

MOTIVES EMERGING

Police earlier said they had assembled "some very good evidence" on the killer's motives.

"Our investigators at the crime scene ... did produce some very good evidence in this investigation that our investigators will be able to use in, hopefully, painting the complete picture as to how - and more importantly why - this occurred," Connecticut State Police Lieutenant Paul Vance told reporters.

Yale-New Haven Hospital opened a crisis-intervention center in the wealthy suburb of 27,000 people about 80 miles from New York City.

The incident also stood to revive a debate about U.S. gun laws.

The killer's mother, Nancy Lanza, legally owned a Sig Sauer and a Glock, both handguns commonly used by police, and a military-style Bushmaster .223 M4 carbine, according to law enforcement officials, who also said they believed Adam Lanza used at least some of those weapons.

"We're investigating the history of each and every weapon, and we will know every single thing about those weapons," Vance said.

The death toll exceeded that of one of the most notorious U.S. school shootings, the 1999 rampage at Columbine High School in Littleton, Colorado, where two teenagers murdered 13 students and staff before killing themselves.

(Additional reporting by Edith Honan, Rob Cox, Chris Kaufman, Dave Gregorio and Chris Francescani; Writing by Scott Malone and Daniel Trotta; Editing by Will Dunham and Eric Walsh)

Source: http://news.yahoo.com/connecticut-gun-rampage-28-dead-including-20-schoolchildren-002304562.html

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Saturday, December 15, 2012

Russia rejects blame in death of ex-spy Litvinenko

MOSCOW (Reuters) - Russia denied on Friday it had a role in the death of Kremlin critic and former spy Alexander Litvinenko in London six years ago, dismissing a statement made during a British inquest into his fatal poisoning with radioactive polonium-210.

A British lawyer told a preliminary hearing on Thursday there was evidence the Russian government was involved in his death, which soured relations between Moscow and London and still contributes to tension.

Allegations of Russian state involvement are unfounded and Moscow hopes an investigation conducted "transparently and without prejudice" will put them to rest, Foreign Ministry spokesman Alexander Lukashevich said.

Litvinenko, who had been granted British citizenship and become a vocal critic of the Kremlin, died in November 2006 after someone slipped polonium-210, a rare radioactive isotope, into his cup of tea at a London hotel.

His poisoning came a month after investigative journalist Anna Politkovskaya was fatally shot in Moscow, another death that Kremlin critics said underscored the dangers of challenging the Russian government.

British police and prosecutors say there is enough evidence to charge two former KGB agents, Andrei Lugovoy and Dmitry Kovtun, in the Litvinenko case, but Moscow has resisted calls to extradite them.

The high-profile hearings into murder plots surrounding Litvinenko's death could put further strain on London's already complicated ties with Moscow, with spy rows and tit-for-tat diplomatic expulsions dominating relations.

Lukashevich acknowledged Litvinenko's death was still troubling relations.

"We hope that as a result of the investigation - on condition, of course, that it is conducted transparently and without prejudice - all the baseless allegations about some kind of Russian involvement in this affair will be dispelled once and for all," he told journalists at a weekly briefing.

KREMLIN CRITICS

Hugh Davies, an attorney acting on behalf of the British inquest, said on Thursday an examination of government material establishes "a prima facie case in the culpability of the Russian state in the death of Alexander Litvinenko".

Ben Emmerson, a lawyer for Litvinenko's widow, Marina, described his death as "state sponsored assassination."

He said the victim had been working for Britain's Secret Intelligence Service, known as MI6, for a number of years and was also employed Spanish security services.

The full inquest into Litvinenko's death, led by Judge Robert Owen, is expected to start on May 1, shedding light on the murky world of espionage.

Litvinenko was an associate of tycoon Boris Berezovsky, a former Kremlin insider who became a critic of Putin and was granted asylum in Britain.

Some in Russia have pointed fingers at Berezovsky, who is frequently accused in the media of meddling in Russian politics from afar and trying to blacken the Kremlin's image.

Berezovsky's lawyer, Hugo Keith, has denied any involvement by his client In Litvinenko's death.

(Reporting by Steve Gutterman; Writing by Alissa de Carbonnel; Editing by Sophie Hares)

Source: http://news.yahoo.com/russia-rejects-blame-death-ex-spy-litvinenko-174125079.html

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Biological Science - Molinarojustin8's blog - Typepad

Normal 0 false false false EN-US X-NONE X-NONE

B.Ed OPTIONAL COURSE

BIOLOGICAL SCIENCE ? I

UNIT I Place, Goals and Objectives of Biology

Biology in the school curriculum ? its claims for inclusion ? Interdisciplinary approaches in the school curriculum ? Various branches related to Life Science.

Goals and objectives of teaching Biology with reference to Bloom?s taxonomy- Cognitive, Affective and Psychomotor Domains. Aims of teaching Biology at different levels ? Primary, Secondary and Higher Secondary.

Biology in the school curriculum

??????????? Biology is a natural science concerned with the study of life and living organisms, including their structure, function, growth, origin, evolution, distribution, and taxonomy. Biology is a vast subject containing many subdivisions, topics, and disciplines. Among the most important topics are five unifying principles that can be said to be the fundamental axioms of modern biology:

  1. Cells are the basic unit of life
  2. New species and inherited traits are the product of evolution
  3. Genes are the basic unit of heredity
  4. An organism regulates its internal environment to maintain a stable and constant condition
  5. Living organisms consume and transform energy.
??????????? Sub disciplines of biology are recognized on the basis of the scale at which organisms are studied and the methods used to study them: biochemistry examines the rudimentary chemistry of life; molecular biology studies the complex interactions of systems of biological molecules; cellular biology examines the basic building block of all life, the cell; physiology examines the physical and chemical functions of the tissues, organs, and organ systems of an organism; and ecology examines how various organisms interact and associate with their environment.

What is science?

??????????? The word "science" probably brings to mind many different pictures: a fat textbook, white lab coats and microscopes, an astronomer peering through a telescope, a naturalist in the rainforest, Einstein's equations scribbled on a chalkboard, the launch of the space shuttle, bubbling beakers ?. All of those images reflect some aspect of science, but none of them provides a full picture because science has so many facets:

  • Science is both a body of knowledge and a process. In school, science may sometimes seem like a collection of isolated and static facts listed in a textbook, but that's only a small part of the story. Just as importantly, science is also a process of discovery that allows us to link isolated facts into coherent and comprehensive understandings of the natural world.
  • Science is exciting. Science is a way of discovering what's in the universe and how those things work today, how they worked in the past, and how they are likely to work in the future. Scientists are motivated by the thrill of seeing or figuring out something that no one has before.
  • Science is useful. The knowledge generated by science is powerful and reliable. It can be used to develop new technologies, treat diseases, and deal with many other sorts of problems.
  • Science is ongoing. Science is continually refining and expanding our knowledge of the universe, and as it does, it leads to new questions for future investigation. Science will never be "finished."
  • Science is a global human endeavor. People all over the world participate in the process of science. And you can too!

Science is complex and multi-faceted, but the most important characteristics of science are straightforward:

  • Science focuses exclusively on the natural world, and does not deal with supernatural explanations.
  • Science is a way of learning about what is in the natural world, how the natural world works, and how the natural world got to be the way it is. It is not simply a collection of facts; rather it is a path to understanding.
  • Scientists work in many different ways, but all science relies on testing ideas by figuring out what expectations are generated by an idea and making observations to find out whether those expectations hold true.
  • Accepted scientific ideas are reliable because they have been subjected to rigorous testing, but as new evidence is acquired and new perspectives emerge these ideas can be revised.
  • Science is a community endeavor. It relies on a system of checks and balances, which helps ensure that science moves in the direction of greater accuracy and understanding. This system is facilitated by diversity within the scientific community, which offers a broad range of perspectives on scientific ideas.

??????????? Too many, science may seem like an arcane, ivory-towered institution ? but that impression is based on a misunderstanding of science. In fact:

  • Science affects your life everyday in all sorts of different ways.
  • Science can be fun and is accessible to everyone.
  • You can apply an understanding of how science works to your everyday life.
  • Anyone can become a scientist ? of the amateur or professional variety.

Definitions of Science

????????? sci?ence

1.????? A branch of knowledge or study dealing with a body of facts or truths systematically arranged and showing the operation of general laws: the mathematical sciences.

2. Systematic knowledge of the physical or material world gained through observation ?? ????????????????????????????????????????????and experimentation.

4. systematized knowledge in general.

5. Knowledge, as of facts or principles; knowledge gained by systematic study.

6. A particular branch of knowledge.

7. Skill, especially reflecting a precise application of facts or principles; proficiency.

Definitions by goal and process

?2. The organized body of knowledge that is derived from such observations and that can be verified or tested by further investigation.

?3. any specific branch of this general body of knowledge, such as biology, physics, geology, or astronomy.

Academic Press Dictionary of Science & Technology

??????????? Science is an intellectual activity carried on by humans that is designed to discover information about the natural world in which humans live and to discover the ways in which this information can be organized into meaningful patterns. A primary aim of science is to collect facts (data). An ultimate purpose of science is to discern the order that exists between and amongst the various facts.

??????????? Science involves more than the gaining of knowledge. It is the systematic and organized inquiry into the natural world and its phenomena. Science is about gaining a deeper and often useful understanding of the world.

The Nature of Normal Science

??????????? Normal science is the practice of gaining knowledge by using some paradigm. It therefore has a perspective, common rules, facts, and problems. Its task is to solidify, reify, and articulate the paradigm; quantify its predictions, extend it to new areas, and to develop the technology needed. It rejects the approbations of the lay. It does not attempt to answer all problems. It uses facts considered revealing to solve problems considered acute by the paradigm. It is to articulate accepted phenomena. Problems must be challenging but not hopeless. Frequently the paradigm and its rules are tacit, they cannot be articulated. The adequacy of a paradigm is judged by peers not lay.

??????????? Normal science is the finding of previously unpredicted phenomena and showing how that phenomenon is explainable with the existing paradigm. Finding unexplainable phenomena is not science; anyone can be capable of not explaining something. Brain damage helps enormously. Normal science does not produce new phenomena; it articulates those that the paradigm supplies. Extending the paradigm (showing how the paradigm explains previously unexplainable events) is mopping up and is where most scientists spend their lives.

??????????? A paradigm gains status because it handles problems that practitioners feel are important - not because it handles all problems.

??????????? 1. Empirical work to articulate paradigm or theory. Determinants of physical constants / quantitative laws / determination of way to apply paradigm to new situation.

??????????? 2. Facts without intrinsic interest which can be compared to predictions from the paradigm.

??????????? 3. Class of facts that the paradigm has shown to be revealing of nature. To desert the paradigm is to cease practicing the science it defines. The task is to explain current problems with rules such that the majority of past findings are consistent, somewhat like a judge trying to be consistent with precedent, or trying to minimize sum of squared differences when determining a regression line.

Fact

? ???????? ?1. ?Something that actually exists; reality; truth: Your fears have no basis in fact.

??????????? ?2. Something known to exist or to have happened: Space travel is now a fact.

3. A truth known by actual experience or observation; something known to be true: ???Scientists gather facts about plant growth.

4. Something said to be true or supposed to have happened: The facts given by the witness are highly questionable.

5. Law often, facts an actual or alleged event or circumstance, as distinguished from its legal effect or consequence. Compare question of fact, question of law.

There are four types of fact. The first type of fact cannot be proved by the experiments as we wish. We have to see this fact when it happens. The second type of fact can be seen and shown at any time. The third type of fact is the generalization i.e. one fact is associating with another fact. The fourth type is a theory but it is treated as fact because of the evidences to prove the theory.

BIOLOGY AS A SCIENCE

??????????? When we say science we know pretty well that includes not only physics and chemistry but also Biology. We can give three reasons to prove that Biology is also a science. They are:

1.????? Biology possesses the characters of other branches of science like practical, experiments, data and utility for the life. We know that all the three branches of science possess all these qualities. Biology also gives the same benefits to the society as the other branches.

2.????? Biology gives a complete and notable knowledge like other branches of science. We know that physics deals with instruments and equipments, chemistry deals with chemical substances and their combinations and biology deals with living organisms. So it gives a complete notable knowledge about living organisms.

3.????? Biology gives extra training in the scientific method. We know that scientific method is a method followed by scientists to develop science. While physics and chemistry gives training to the pupil in this method, Biology is expected to give extra training in this method. This is because it deals with living organisms and they have to face complex problems in their life. The pupils are expected to adopt the scientific method in order to find how the living organisms overcome the complex problems. So they get extra training in the scientific method by studying Biology. Because of these three reasons Biology is considered as science along with other branches of science. ?

GOALS AND OBJECTIVES OF TEACHING BIOLOGY WITH REFERENCE TO BLOOM?S TAXONOMY

Benjamin Bloom's Taxonomy of Learning Domains - Cognitive, Affective, Psychomotor Domains - design and evaluation toolkit for training and learning

??????????? Bloom's Taxonomy, (in full: 'Bloom's Taxonomy of Learning Domains', or strictly speaking: Bloom's 'Taxonomy Of Educational Objectives') was initially (the first part) published in 1956 under the leadership of American academic and educational expert Dr Benjamin S Bloom. 'Bloom's Taxonomy' was originally created in and for an academic context, (the development commencing in 1948), when Benjamin Bloom chaired a committee of educational psychologists, based in American education, whose aim was to develop a system of categories of learning behaviour to assist in the design and assessment of educational learning. Bloom's Taxonomy has since been expanded over many years by Bloom and other contributors (notably Anderson and Krathwhol as recently as 2001, whose theories extend Bloom's work to far more complex levels than are explained here, and which are more relevant to the field of academic education than to corporate training and development).

??????????? Most corporate trainers and HR professionals, coaches and teachers, will benefit significantly by simply understanding the basics of Bloom's Taxonomy, as featured below. (If you want to know more, there is a vast amount of?related reading and references, listed at the end of this summary explanation.)

Bloom's Taxonomy was primarily created for academic education; however it is relevant to all types of learning.

??????????? Interestingly, at the outset, Bloom believed that education should focus on 'mastery' of subjects and the promotion of higher forms of thinking, rather than a utilitarian approach to simply transferring facts. Bloom demonstrated decades ago that most teaching tended to be focused on fact-transfer and information recall - the lowest level of training - rather than true meaningful personal development, and this remains a central challenge for educators and trainers in modern times. Much corporate training is also limited to non-participative, unfeeling knowledge-transfer, (all those stultifying boring PowerPoint presentations...), which is reason alone to consider the breadth and depth approach exemplified in Bloom's model.

You might find it helpful now to see the?Bloom Taxonomy overview. Did you realize there were all these potential dimensions to training and learning?

??????????? Benjamin S Bloom (1913-99) attained degrees at Pennsylvania State University in 1935. He joined the Department of Education at the University of Chicago in 1940 and attained a PhD in Education in 1942, during which time he specialized in examining. Here he met his mentor Ralph Tyler with whom he first began to develop his ideas for developing a system (or 'taxonomy') of specifications to enable educational training and learning objectives to be planned and measured properly - improving the effectiveness of developing 'mastery' instead of simply transferring facts for mindless recall. Bloom continued to develop the Learning Taxonomy model through the 1960's, and was appointed Charles H Swift Distinguished Service Professor at Chicago in 1970. He served as adviser on education to several overseas governments including of Israel and India.

??????????? Bloom's (and his colleagues') initial attention was focused on the?'Cognitive Domain', which was the first published part of Bloom's Taxonomy, featured in the publication: 'Taxonomy Of Educational Objectives: Handbook 1, The Cognitive Domain' (Bloom, Engelhart, Furst, Hill, Krathwohl, 1956).

??????????? The 'Taxonomy of Educational Objectives: Handbook II, The Affective Domain' (Bloom, Masia, Krathwohl) as the title implies, deals with the detail of the second domain, the?'Affective Domain', and was published in 1964.

??????????? Various people suggested detail for the third?'Psychomotor Domain', which explains why this domain detail varies in different representations of the complete Bloom Taxonomy. The three most popularly referenced versions of the Psychomotor Domain seem to be those of???? RH Dave?(1967/70),?EJ Simpson (1966/72), and?AJ Harrow?(1972).

??????????? As such 'Bloom's Taxonomy' describes the three-domain structure, within which the detail may vary, especially for the third domain.

??????????? Bloom's Taxonomy has therefore since 1956 provided a basis for ideas which have been used (and developed) around the world by academics, educators, teachers and trainers, for the preparation of learning evaluation materials, and also provided the platform for the complete 'Bloom's Taxonomy' (including the detail for the third 'Psychomotor Domain') as we see it today. Collectively these concepts which make up the whole Bloom Taxonomy continue to be useful and very relevant to the planning and design of: school, college and university education, adult and corporate training courses, teaching and lesson plans, and learning materials; they also serve as a template for the evaluation of: training, teaching, learning and development, within every aspect of education and industry.

Training or learning design and evaluation need not cover all aspects of the Taxonomy - just make sure there is coverage of the aspects that are appropriate.

??????????? As such, if in doubt about your training aims - check what's possible, and perhaps required, by referring to Bloom's Taxonomy.

Explanation of bloom's taxonomy

??????????? First, don't be put off by the language or the apparent complexity of Bloom's Taxonomy - at this basic level it's a relatively simple and logical model.

??????????? Taxonomy?means 'a set of classification principles', or 'structure', and?Domain?simply means 'category'. Bloom and his colleagues were academics, looking at learning as a behavioural science, and writing for other academics, which is why they never called it 'Bloom's Learning Structure', which would perhaps have made more sense to people in the business world. (Interestingly this example of the use of technical language provides a helpful lesson in learning itself, namely, if you want to get an idea across to people, you should try to use language that your audience will easily recognize and understand.)

??????????? Bloom's Taxonomy underpins the classical 'Knowledge, Attitude, Skills' structure of learning method and evaluation, and aside from the even simpler?Kirkpatrick learning evaluation model, Bloom's Taxonomy of Learning Domains remains the most widely used system of its kind in education particularly, and also industry and corporate training. It's easy to see why, because it is such a simple, clear and effective model, both for explanation and application of learning objectives, teaching and training methods, and measurement of learning outcomes.

??????????? Bloom's Taxonomy provides an excellent structure for planning, designing, assessing and evaluating training and learning effectiveness. The model also serves as a sort of?checklist, by which you can ensure that training is planned to deliver all the necessary development for students, trainees or learners, and a template by which you can assess the validity and coverage of any existing training, be it a course, a curriculum, or an entire training and development programme for a large organization.

??????????? It is fascinating that Bloom's Taxonomy model (1956/64) and?Kirkpatrick's learning evaluation model (1959) remain classical reference models and tools into the 21st century. This is because concepts such as Bloom's Taxonomy, Kirkpatrick's model,?Maslow's Hierarchy of Needs,?Mcgregor's XY Theory, The?SWOT analysis?model, and?Berne's Transactional Analysis theory, to name a few other examples, are timeless, and as such will always be relevant to the understanding and development of people and organizations. Bloom?s taxonomy definitions

??????????? Bloom's Taxonomy model is in three parts, or 'overlapping domains'. Again, Bloom used rather academic language, but the meanings are simple to understand:

  1. Cognitive domain?(intellectual capability, i.e.,?knowledge, or?'think')
  2. Affective domain?(feelings, emotions and behaviour, i.e.,?attitude, or?'feel')
  3. Psychomotor domain?(manual and physical skills, i.e.,?skills, or?'do')

??????????? This has given rise to the obvious short-hand variations on the theme which summaries the three domains; for example, Skills-Knowledge-Attitude, KAS, Do-Think-Feel, etc.

??????????? Various people have since built on Bloom's work, notably in the third domain, the 'psychomotor' or skills, which Bloom originally identified in a broad sense, but which he never fully detailed. This was apparently because Bloom and his colleagues felt that the academic environment held insufficient expertise to analyze and create a suitable reliable structure for the physical ability 'Psychomotor' domain. While this might seem strange, such caution is not uncommon among expert and highly specialized academics - they strive for accuracy as well as innovation. In Bloom's case it is as well that he left a few gaps for others to complete the detail; the model seems to have benefited from having several different contributors fill in the detail over the years, such as Anderson, Krathwhol, Masia, Simpson, Harrow and Dave (these last three having each developed versions of the third 'Psychomotor' domain).

??????????? In each of the three domains Bloom's Taxonomy is based on the premise that the categories are ordered in degree of difficulty.?An important premise of Bloom's Taxonomy is that each category (or 'level') must be mastered before progressing to the next. As such the categories within each domain are levels of learning development, and these levels increase in difficulty.

??????????? The simple matrix structure enables a checklist or template to be constructed for the design of learning programmes, training courses, lesson plans, etc. Effective learning - especially in organizations, where training is to be converted into organizational results - should arguably cover all the levels of each of the domains, where relevant to the situation and the learner.

??????????? The learner should benefit from development of knowledge and intellect (Cognitive Domain); attitude and beliefs (Affective Domain); and the ability to put physical and bodily skills into effect - to act (Psychomotor Domain).

??????????? Here's a really simple adapted 'at-a-glance' representation of Bloom's Taxonomy. The definitions are intended to be simple modern day language, to assist explanation and understanding. This simple overview can help you (and others) to understand and explain the taxonomy. Refer back to it when considering and getting to grips with the detailed structures - this overview helps to clarify and distinguish the levels.

??????????? For the more precise original Bloom Taxonomy terminology and definitions see the more detailed domain structures beneath this at-a-glance model. It's helpful at this point to consider also the ?conscious competence' learning stages model, which provides a useful perspective for all three domains, and the concept of developing competence by stages in sequence.

Cognitive

Affective

Psychomotor

knowledge

attitude

skills

1. Recall data

1.Receive? (awareness)

1. Imitation (copy)

2. Understand

2. Respond (react)

2. Manipulation (follow instructions)

3. Apply (use)

3. Value (understand and act)

3. Develop Precision

4.Analyse (structure/elements)

4. Organize personal value system

4.Articulation (combine, integrate related skills)

5.Synthesize (create/build)

5. Internalize value system (adopt behaviour)?

5.Naturalization (automate, become expert)

6. Evaluate (assess, judge in relational terms)

N.B. In the Cognitive Domain, levels 5 and 6, Synthesis and Evaluation, were subsequently inverted by Anderson and Krathwhol in 2001. Anderson and Krathwhol also developed a complex two-dimensional extension of the Bloom Taxonomy, which is not explained here. If you want to learn more about the bleeding edge of academic educational learning and evaluation there is a list of further references below. For most mortals in teaching and training what's on this page is probably enough to make a start, and a big difference.

??????????????? Note also that the Psychomotor Domain featured above is based on the domain detail established by RH Dave (who was a student of Bloom) in 1967 (conference paper) and 1970 (book). The Dave model is the simplest and generally easiest to apply in the corporate development environment. Alternative Psychomotor Domains structures have been suggested by others, notably?Harrow and Simpson's models detailed below. I urge you explore the?Simpson?and?Harrow?Psychomotor Domain alternatives - especially for the development of children and young people, and for developing skills in adults that take people out of their comfort zones. This is because the Simpson and Harrow models offer different emotional perspectives and advantages, which are useful for certain learning situations, and which do not appear so obviously in the structure of the Dave model.

??????????? Bloom's Taxonomy in more detailed structure follows, with more formal terminology and definitions. Refer back to the?Bloom Taxonomy overview?any time you need to refresh or clarify your perception of the model. It is normal to find that the extra detail can initially cloud the basic structure - which is actually quite simple - so it's helpful to keep the simple overview to hand.

?Bloom?s taxonomy learning domains - detailed structures

Bloom's Taxonomy 1956 Cognitive Domain is as follows. An adjusted model was produced by Anderson and Krathwhol in 2001 in which the levels five and six (synthesis and evaluation) were inverted (reference: Anderson & Krathwhol, A Taxonomy for Learning, Teaching, and Assessing: A Revision of Bloom's Taxonomy of Educational Objectives, 2001). This is why you will see different versions of this Cognitive Domain model. Debate continues as to the order of levels five and six, which is interesting given that Bloom's Taxonomy states that the levels must be mastered in order.

??????????? In my humble opinion it's possible to argue either case (Synthesis then Evaluation, or vice-versa) depending on the circumstances and the precise criteria stated or represented in the levels concerned, plus the extent of 'creative thinking' and 'strategic authority' attributed to or expected at the 'Synthesis' level. In short - pick the order which suits your situation.

cognitive domain

?level

category or 'level'

behaviour descriptions

examples of activity to be trained, or demonstration and evidence to be measured

'key words' (verbs which describe the activity to be trained or measured at each level)

1

Knowledge

recall or recognise information

multiple-choice test, recount facts or statistics, recall a process, rules, definitions; quote law or procedure

arrange, define, describe, label, list, memorise, recognise, relate, reproduce, select, state

2

Comprehension

understand meaning, re-state data in one's own words, interpret, extrapolate, translate

explain or interpret meaning from a given scenario or statement, suggest treatment, reaction or solution to given problem, create examples or metaphors

explain, reiterate, reword, critique, classify, summarise, illustrate, translate, review, report, discuss, re-write, estimate, interpret, theories, paraphrase, reference, example

3

Application

use or apply knowledge, put theory into practice, use knowledge in response to real circumstances

put a theory into practical effect, demonstrate, solve a problem, manage an activity

use, apply, discover, manage, execute, solve, produce, implement, construct, change, prepare, conduct, perform, react, respond, role-play

4

Analysis

interpret elements, organizational principles, structure, construction, internal relationships; quality, reliability of individual components

identify constituent parts and functions of a process or concept, or de-construct a methodology or process, making qualitative assessment of elements, relationships, values and effects; measure requirements or needs

analyze, break down, catalogue, compare, quantify, measure, test, examine, experiment, relate, graph, diagram, plot, extrapolate, value, divide

5

Synthesis (create/build)

develop?new unique structures, systems, models, approaches, ideas; creative thinking, operations

develop plans or procedures, design solutions, integrate methods, resources, ideas, parts; create teams or new approaches, write protocols or contingencies

develop, plan, build, create, design, organize, revise, formulate, propose, establish, assemble, integrate, re-arrange, modify

6

Evaluation

assess effectiveness of whole concepts, in relation to values, outputs, efficacy, viability; critical thinking, strategic comparison and review; judgement relating to external criteria

review strategic options or plans in terms of efficacy, return on investment or cost-effectiveness, practicability; assess sustainability; perform a?SWOT analysis in relation to alternatives; produce a financial justification for a proposition or venture, calculate the effects of a plan or strategy; perform a detailed and costed risk analysis with recommendations and justifications

review, justify, assess, present a case for, defend, report on, investigate, direct, appraise, argue, project-manage

??????????? Based on the 'Taxonomy Of Educational Objectives: Handbook 1, The Cognitive Domain' (Bloom, Engelhart, Furst, Hill, Krathwhol) 1956. This table is adapted and reproduced with permission from Allyn & Bacon, Boston USA, being the publishers and copyright owners of 'Taxonomy Of Educational Objectives' (Bloom et al 1956).

Note that levels 5 and 6, Synthesis and Evaluation, were subsequently inverted by Anderson and Krathwhol in 2001, on which point:

??????????? The question of the order of Synthesis and Evaluation is dependent upon the extent of strategic expectation and authority that is built into each, which depends on your situation. Hence it is possible to make a case for Bloom's original order shown above, or Anderson and Krathwhol version of 2001 (which simply inverts levels 5 and 6).

??????????? The above version is the original, and according to the examples and assumptions presented in the above matrix, is perfectly appropriate and logical. I also personally believe the above order to be appropriate for?corporate and industrial training and development?if?'Evaluation'?is taken to represent?executive or strategic assessment and decision-making, which is effectively at the pinnacle of the corporate intellect-set.

??????????? The inversion of Synthesis and Evaluation carries a risk unless it is properly qualified. This is because the highest skill level absolutely must involve?strategic evaluation; effective management - especially of large activities or organizations - relies on strategic evaluation. And clearly,?strategic evaluation is by implication included in the 'Evaluation' category.

??????????? I would also argue that in order to evaluate properly and strategically, we need first to have learned and experienced the execution of the strategies (ie, to have completed the synthesis step) that we intend to evaluate.

??????????? However, you should feel free to invert levels 5 and 6 if warranted by your own particular circumstances, particularly if your interpretation of 'Evaluation' is non-strategic, and not linked to decision-making. Changing the order of the levels is warranted if local circumstances alter the degree of difficulty. Remember, the taxonomy is based in the premise that the degree of difficulty increases through the levels - people need to learn to walk before they can run - it's that simple. So, if your situation causes 'Synthesis' to be more challenging than 'Evaluation', then change the order of the levels accordingly (i.e., invert 5 and 6 like Anderson and Krathwhol did), so that you train people in the correct order.

??????????? Bloom's Taxonomy second domain, the Affective Domain, was detailed by Bloom, Krathwhol and Masia in 1964 (Taxonomy of Educational Objectives: Volume II, The Affective Domain. Bloom, Krathwhol and Masia.) Bloom's theory advocates this structure and sequence for developing attitude - also now commonly expressed in the modern field of personal development as 'beliefs'. Again, as with the other domains, the Affective Domain detail provides a framework for teaching, training, assessing and evaluating the effectiveness of training and lesson design and delivery, and also the retention by and affect upon the learner or trainee.

affective domain

?level

category or 'level'

behaviour descriptions

examples of experience, or demonstration and evidence to be measured

'key words' (verbs which describe the activity to be trained or measured at each level)

1

Receive

open to experience, willing to hear

listen to teacher or trainer, take interest in session or learning experience, take notes, turn up, make time for learning experience, participate passively

ask, listen, focus, attend, take part, discuss, acknowledge, hear, be open to, retain, follow, concentrate, read, do, feel

2

Respond

react and participate actively

participate actively in group discussion, active participation in activity, interest in outcomes, enthusiasm for action, question and probe ideas, suggest interpretation

react, respond, seek clarification, interpret, clarify, provide other references and examples, contribute, question, present, cite, become animated or excited, help team, write, perform

3

Value

attach values and express personal opinions

decide worth and relevance of ideas, experiences; accept or commit to particular stance or action

Source:

Source: http://molinarojustin8.typepad.com/blog/2012/12/biological-science-hood-odis831s-blog-typepad.html

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Friday, December 14, 2012

New Voxeet Mobile Apps Offer Stereo HD Sound For Conference Calls With No Audio Bridge

voxeetVoxeet has new apps for the iPhone and the Android that provide stereo HD sound for conference calls without any audio bridge. I had a demo last week and I was definitely impressed. My Android HTC Sensation has awful sound quality.

Source: http://feedproxy.google.com/~r/Techcrunch/~3/AlGnGzV0jNk/

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Understanding the 'Best Places to Work' scores (Washington Post)

Share With Friends: Share on FacebookTweet ThisPost to Google-BuzzSend on GmailPost to Linked-InSubscribe to This Feed | Rss To Twitter | Politics - Top Stories Stories, RSS Feeds and Widgets via Feedzilla.

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Important Types Of Hepatitis - Ayushveda

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HepatitisHepatitis is a clinical condition of liver inflammation mostly caused by viral infection. It can also be led by other certain reasons like contamination through food, drinks and intake of toxins and sometimes autoimmune diseases are the grounds.

There are mainly five types of Hepatitis with different stages such as acute and chronic, which are normally being treated worldwide. Here are the most common types of hepatitis and the roots behind it.

Different Types Of Hepatitis And Variations Among All

Hepatitis A or HAV Infection

Hepatitis A is the most common type which is caused by the virus HAV. The colossal reason of the occurrence is contamination by having infected food and water. The very kind of hepatitis causes liver inflammation and swelling but condition is normally acute and it does not get worse most of the time.

HAV infection is ranked among the STD (sexually transmitted disease). A sexual contact with infected person can lead to contamination. Solid waste of HAV infected person causes more contagious conditions. It is suggested to be attentive towards cleanliness. Protection from infectious condition can avoid the chances. The condition is totally curable through immune system and hardly needs medication.

Hepatitis B or HBV Infection

Hepatitis B is an infection occurred through HBV virus. Unlike Hepatitis A, the infection leads to a chronic condition of liver if it is untreated for a long time. The persistent infection may cause liver cancer. The HBV is mostly spread through the blood and other body fluids. Unprotected intercourse with infected person can transfer the virus so fast.

Hepatitis B

The other frequent actions for contaminations are; sharing contaminated needles for drugs, contaminated blood transfusion, through the infected mother to the baby in the womb, using unsterile equipment for tattooing. The infection does not spread by cough and touch of infected person. Hepatitis B is totally curable when it is treated in time and the patient gets immunity through the infection for life-long.

Hepatitis C or HCV Infection

Hepatitis C is also a reason of inflammation in the liver. It occurs through the hepatitis c virus or HCV. Similar to Hepatitis B, the main reason of passing on the virus is contaminated blood and other body fluid like saliva, semen and even the breast feeding of infectious mother to the baby. It is rare but still a threat to get the infection by unprotected sex with HCV infected person.

Hepatitis C

Source :?http://yourstdhelp.com/hepatitis.html

Like Hepatitis B, the most common sources of infection are contaminated needles, non-sterilisedz tattooing needles, piercing with contaminated needle, and acupuncture with used needles. There is no contagious condition found through food, water, coughing, touching and hugging.

Hepatitis C is mostly turned into chronic condition thus it is taken as the worst infection among other hepatitis. Unlike Hepatitis A and B, the HCV infection has no cure and untreated or ill-treated condition leads to liver failure, cirrhosis and cancer in the liver. The infection is so persistent and person with chronic infection bears a life-long risk of transmission.

Also Read

Symptoms Of Hepatitis B During Pregnancy
Best Herbalremedies For Chronic Hepatitis
Hepatitis C Symptoms

Hepatitis D or HDV Infection ?

Hepatitis D is a liver related infection through the virus HDV. The most uncommon condition of the infection lies within the body of the individual. A person infected with Hepatitis B earlier gets HDV infection to the chronic level and causes transmission of the virus till life.

Hepatitis D is sourced through Hepatitis B and HDV is totally dependent over HBV to get multiplied inside the body. The chronic infection causes liver cancer and scarring of the liver. The infection mainly passes on through contact with contaminated blood, unprotected sex with infectious person, non-sterilised needle and body fluids. Individuals with no HBV history get recovered within 2 months.

Hepatitis E or HEV Infection

Hepatitis E is a liver infection caused by the virus HEV. Hepatitis E is mostly spread through contaminated water. The other reason of the transmission is faecal-oral contact. The other grounds for passing on the virus are eating in contaminated dishes like plates and glasses, having food through dirty hands, other oral contacts with contagious things.

The infection causes swelling in the liver but it does not lead to any further damage. There is no life taking risk from HEV infection but it is necessary to keep the cleanliness in mind for a healthy liver.

Hepatitis along with different viral infection causes the inflammatory cells inside the liver. The chronic condition of hepatitis may cause failure of such vital part with life-long pain. These viral infections need a lot of attention and medical supervision. A clean and safe lifestyle can easily decrease half of the risk.

Photo Credit:?http://www.voxxi.com/what-is-hepatitis/

Source: http://www.ayushveda.com/magazine/important-types-of-hepatitis/

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