Researchers in China and the United States have developed a new cataract(白内障)treatment with cells that has restored vision in babies in a trial and may eventually be used in adults.

    The treatment- by doctors and staff members at the University of California, San Diego School of Medicine and Sichuan and Sun Yat-sen universities in China-was published in March 9 edition of the scientific journal Nature.

    A cataract is a clouding of the normally clear lens(晶体)of an eye. Typical cataract operation involves the removal of the cloudy lens and the insertion of an artificial one. The new operation has been tested in animals and during a small, human trial. It resulted in fewer complications(并发症)than the current harmful operation, and in regrown lenses with superior visual function in all 12 of the baby cataract patients who received the procedure.

    A congenital cataract- lens clouding that occurs at birth or shortly after- is important cause of blindness in children. In the new research, Kand Zhang, head of ophthalmic genetics at US San Diego's Shiley Eye Institute, and his colleagues relied on the regrown potential of endogenous(同源的)stem cells.

    According to Zhang, endogenous stem cells are different from other stem cells that are typically grown in a laboratory, transplanted into a patient, and can have risks of immune（免疫的）rejection, infection or cancers. Zhang told CBS News, “We invented a new operation to make a very small opening at the side of a cataractous lens bag, remove the cataract inside, allow the opening to heal, and promote potential lens stem cells to regrow an entirely new lens with vision.”

    The human trial involved 12 babies under the age of 2 who were treated with the new method, while 25 babies received thee standard operation care.. The latter group experienced a higher incidence of pos- operation danger, early- onset eye high blood pressure and increased lens clouding. The scientists reported fewer complications and faster healing among the 12 babies who has the new procedure.

WELCOME

    Welcome to Windsor Castle, the oldest and largest occupied castle in the world .Windsor is one the official residences (住所)of the Queen, who sometimes stays here.

Audio tours

    Free audio tours are available on leaving the Admission Centre at the start of your visit .There is a descriptive audio tour for blind and poor-sighted visitors.

Guided tours

    Visitors can explore the history of the Castle through a tour of the Precincts with an expert guide. Tours depart at regular intervals throughout the day from the Courtyard and finish at the entrance to the State Apartments.

Visitors with children

    For those visiting with children, a special family tour and various activities are offered during school holidays and at weekends .Please note that, for safety reasons, pushchairs are not permitted in the State Apartments. However, baby carriers are available to borrow.

St George's Chapel

    Visitors arriving at the Castle after 15:00 from March to October are advised to visit St George's Chapel first before it closes.

Shopping

    Shops offer a wide range of souvenirs designed for the Royal Collection, including books, postcards, china, jewellery, and children's toys. Please ask at the Middle Ward shop about our home delivery service.

Refreshments

    Bottled water can be purchased from the Courtyard and Middle Ward shops. From April to September ice cream is also available. Visitors wishing to leave the Castle for refreshments in the town may obtain re-entry permits from the castle shops. Eating and drinking are not permitted in the State Apartments or St George's Chapel.

Photography and mobile phones

    Non-commercial photography and filming are welcomed in the Castle. Photography, video recording and filming are not permitted inside the State Apartments or St George's Chapel. Mobile phone must be switched off inside the State Apartments and St George's Chapel in consideration of other visitors.

Security

    As Winter Castle is a working royal palace, visitors and their belongings should get through airport style security checks. For safety and security reasons a one-way system operates along the visitor route.

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    How is it that siblings (兄弟姐妹) can turn out so differently? One answer is that in fact each sibling grows up in a different family. The firstborn is, for a while, an only child, and therefore has a completely different experience of the parents than those born later. The next child is, for a while, the youngest, until the situation is changed by a new arrival. The mother and father themselves are changing and growing up too. One sibling might live in a stable and close family in the first few years; another might be raised in a family crisis, with a disappointed mother or an angry father.

    Sibling competition was identified as an important shaping force as early as in 1918. But more recently, researchers have found many ways in which brothers and sisters are a lasting force in each others' lives. Dr. Annette Henderson says firstborn children pick up vocabulary more quickly than their siblings. The reason for this might be that the later children aren't getting the same one-on-one time with parents. But that doesn't mean that the younger children have problems with language development. Later-borns don't enjoy that much talking time with parents, but instead they harvest lessons from bigger brothers and sisters, learning entire phrases and getting an understanding of social concepts such as the difference between “I” and “me”.

    A Cambridge University study of 140 children found that siblings created a rich world of play that helped them grow socially. Love-hate relationships were common among the children. Even those siblings who fought the most had just as much positive communication as the other sibling pairs.

    One way children seek more attention from parents is by making themselves different from their siblings, particularly if they are close in age. Researchers have found that the first two children in a family are typically more different from each other than the second and third. Girls with brothers show their differences to a maximum degree by being more feminine than girls with sisters. A 2003 research paper studied adolescents from 185 families over two years, finding that those who changed to make themselves different from their siblings were successful in increasing the amount of warmth they gained from their parents.

    One of the simplest and the most effective forms of communication involves nothing more than the movement of facial muscles. What am I talking about? Smiling! Everyone understands what a smile means, and everyone also understands what a frown means. In fact, these two basic facial expressions can be recognized across countries, across the world and across the globe, regardless of the language spoken or the culture lived in.

    Moreover, hugs are so beautiful! When you give someone a hug or someone comes up and gives you a hug, this simple act of a hug can “speak” volumes about how much you care for the other person, how much love you want to share with the other person, how much you have missed the other person. This hug has so much to say, and yet there never has to be any words spoken.

    And, who needs to say the words “yes” or “no” when a movement of the head says the same thing. These basic examples show just how powerful body language can be. Just knowing how to read and use body language effectively, makes it really easy to see why it is not always a bad thing to be lost for words.

    Body language in the world of love is a very common thing and sometimes the only thing. And, most of the time, body language is the very first words “spoken” before any words are. The old saying is “love at first sight”, not “love at first word”. Across a crowded room, their eyes meet and linger, he winks at her, and she raises an eyebrow. The connection is made without any words needed. These displays of body language say it all. In fact, sometimes they can say more than words can.

    Are you interested in higher education in the United States? The following advice might help you.

    College, University or Institute

    College and universities offer undergraduate degrees in arts and sciences. And both can help prepare young people to earn a living. But many colleges don't offer graduate studies. Universities are generally bigger, offer more programs and do more research. An institute of technology can offer a wide choice of programs and activities. Seventy-five percent of freshmen go there with a strong interest and involvement in the arts.

    The Application Process

    International admissions officers advise students to apply to at least three schools. You may be able to apply online and pay the application charge with a credit card, or by mail. You should study the websites of schools to find information about how and when to apply, how much it will cost and whether any financial aid is available.

    Get a Student Card

    If you request a visa for the first time, you will have to go to an American embassy or consulate(领事馆). You will need to bring a government form sent to you by your American school that shows you have been accepted. A consular official will also take your picture and your fingerprints. You will also need banking and tax records that show you have enough money to pay for your education.

    Financial Aid

    American schools provide aid, like scholarships, fellowships, to almost half of foreign graduate students, but only ten percent of undergraduates. But grants, which, unlike a loan, does not have to be paid.