English Classes for Free

    Adults of all nationalities (国籍) are welcome to take our English classes. Our classes meet every day, Monday to Friday from 1 pm to 3 pm. Our classes are free because we are running a teacher training center and our teachers need students for teaching practice. Classes will cover grammar, vocabulary, conversations, reading and writing skills. Classes will begin on July 24th and will end on October 13th. All students must be 18 and over.

    Table Tennis Lessons

    If you love to play ping-pong and like to improve your game, welcome to Chicago Table Tennis Club all year around. We are the biggest club in Chicago with more than 100 members and students at all levels and ages. We can improve your ping-pong skills and within one class you will see the result. If you or your kids are interested, please feel free to call 317-287-9852.

    Dance Classes Start Soon

    Don't worry if you have no dance experience. 90% of our students don't. Our summer dance classes start you off at ground zero and build you up. The classes are for adults and are full of people in their 20's and 30's hoping to learn some moves, stay in shape, and meet cool people!

    We have been in business for 5 years now, and have taught almost 2,000 students!

    Summer Theatre Camp

    Our Summer Theatre Camp educates young people aged 7〜14 in the theatre arts. The camp offers classes in speech, character-building, dance, reading and so on. Camp hours will be 8 am to 4 pm. The camp will provide theatre experience for only 45 campers. The campers will have to join in a contest and be chosen for the camp.

    Japanese researchers say they have developed a new type of glass that can heal itself from cracks and breaks. Glass made from a low weight polymer (聚合物) called “polyether-thioureas” can heal breaks when pressed together by hand without the need for high heat to melt the material.

    The research, published in Science, by researchers led by Professor Takuzo Aida from the University of Tokyo, promises healable glass that could potentially be used in phone screens and other fragile (易碎的) devices, which they say are an important challenge for sustainable (可持续的) societies.

    While self-healing rubber and plastics have already been developed, the researchers said that the new material was the first hard substance of its kind that can be healed at room temperature. The new polymer glass is “highly robust mechanically yet can readily be repaired by compression (压紧) at broken surfaces”.

The characteristics of the polyether-thioureas glass were discovered by accident by a graduate school student named Yu Yanagisawa, who was preparing the material as a glue. Yanagisawa found that when the surface of the polymer was cut, the edges would adhere to each other, healing to form a strong sheet after being manually compressed for 30 seconds at 21℃. Further experiments found that the healed material regained its original strength after a couple of hours.

    Yanagisawa told NHK that he didn't believe the results at first and repeated his experiments several times to confirm the finding. He said, “I hope the repairable glass becomes a new environment-friendly material that avoids the need to be thrown away if broken.”

    This is not the first time a polymer has been suggested as a healable screen for devices such as smartphones. Researchers at the University of California suggested the use of polymer that could stretch to 50 times its original size and heal breaks within 24 hours.

    Smartphone manufacturers have already used self-healing materials in devices. LG's G Flex 2 shipped in 2016 with a coating on its back was capable of healing minor scratches over time, although failed to completely repair heavier damage.

    According to the research conducted by repair firm iMend, over 21% of UK smartphone users were living with a broken screen, with smashed displays being one of the biggest issues alongside poor battery life.

    You probably know you should say” please” and “thank you ” at restaurants. You probably know the rules of a library. You know you should respect and be nice to your classmates. But do you have music manners?

    Keep It Down! You have to notice the volume of your music. You should not play your music so loud that everyone around you can hear it. Some people might even get angry. Usually, when you play the music loud on an MP3 player, other people can't hear the words of the song. They just hear a loud sound. Not one wants to listen to this. Very loud music can also be bad for your ears, so even if you are alone when listening to our MP3 player, you shouldn't have it turned up too high.

    Take Them Off! You need to know when to turn your MP3 player off and put it away. Libraries and schools don't allow MP3 players. There are other places, like museums, that don't have rules, but it would be rude to have your MP3 player on. Sometimes, it just doesn't make sense（没意义） to listen your MP3 player at event. Why would you listen to music at a play, a movie or a sporting event? You would miss what is going on and others would wonder why you even came.

    Take One Out! Once in a while it's okay just to take out one earphone and not the other. Imagine you are listening to your MP3 player when someone asks you the way. It would not be rude to take out one earphone, tell him the way, and put back the earphone and continue listening. You can also do this when you order food at a fast-food restaurant.

    It's Your Choice! There are times when you need to decide what is best. For example, some people can listen to music on their MP3 Players when read books, while others think it is disturbing. In cases like this, you need to do what seems right for you.

    A so-called “smart drug” intended to improve people's cognitive (认知的) function to protect the brain from altitude sickness.

    Visiting high-altitude sites for work, spot, religious pilgrimages and military can result in cognitive effects, including memory loss and attention difficulties. There's little you can do to prevent these symptoms except acclimatize -but this takes time and doesn't always work. A drug called oxiracetam might be the answer.

    ShengLi Hu at the Third Military Medical University, Chongqing, China and her colleagues studied the performance of male military personnel at altitude. All lived in towns around 1,800 meters above sea level, During the study, they spent eight days at this altitude and then climbed for three days to reach 4,000 meters, where they stayed for up to a month.

    Twenty participants took oxriacetam three times a day for the first 15 days of the study, while another 20 received no intervention. The man did tests of attention and memory at the start and end of the study and 20 days in, by which time they had been at 4,000 meters for nine days.

    While all the participants experienced a drop in cognitive ability at 4,00 meters, those who took oxiracetam showed a much smaller drop than the control group.

    The team found that at high altitude the brain stem, which plays a critical role in supporting basic living functions, received blood at the expense of areas responsible for more advanced cognitive functions. But in people who took oxiracetam, blood flowing throughout the brain rose, thus offering more oxygen to these areas. This may be how the drug seems to lessen cognitive problems like with low oxygen.

    It isn't yet known whether diverting blood in this way could have negative effects in the long run. "The results are striking and imply that oxiracetam may be beneficial for helping to relieve cognitive ability decline caused by altitude." says Timothy Hales at the University of Dundee, UK.

Scholars in quest of demystifying the enigmatic depths of the subaquatic cosmos have been bestowed with a trove of invaluable data, courtesy of a conglomerate of international experts who have compiled a compendium delineating the fauna that emit or are anticipated to emit acoustic waves beneath the waterline.

Under the aegis of Audrey Looby, a luminary from the University of Florida, the Global Library of Underwater Biological Sounds consortium, in unison with the World Register of Marine Species, has meticulously chronicled 729 species of marine mammals, aquatic vertebrates, and invertebrates that generate either active or passive auditory signals. Furthermore, the register encompasses an additional 21,911 species presumed to be potential sources of sound.

"Given that the aquatic expanse envelops more than 70% of the Earth's terrestrial envelope, the majority of our planet's ecosystems are submerged, and it is a prevalent misconception that the majority of these aquatic entities exist in an auditory vacuum. The recently unveiled exhaustive digital repository, which catalogues the known sound-producing creatures, is unprecedented and has the potential to transform the domains of marine and aquatic science," elucidated the team of investigators.

"The act of eavesdropping on the subaquatic symphony can unveil a plethora of insights regarding the species that orchestrate these sounds and serves a multitude of applications, from the stewardship of fisheries, the detection of invasive species, to the appraisal of the imprint of human activity on the environment," remarked Looby, who is also the co-architect of FishSounds, a repository that curates a spectrum of research records on the acoustic emissions of fish.

The research of this collective was disseminated in the annals of Scientific Data and featured contributions from 19 scribes hailing from six distinct nations. "Comprehending the modalities of interaction between marine species and their environs is of paramount global significance, and the unrestricted availability of this dataset marks a monumental stride towards this aspiration," proclaimed Keran Cox, an affiliate of the investigative cadre.

"The majority of individuals are acquainted with the vocalizations of cetaceans or marine mammals, yet are frequently astonished to discover that a multitude of fish and invertebrates also utilize sound as a medium of communication," Looby stated. "Our database serves to exemplify the ubiquity of sound production in the subaquatic realm across a diverse array of creatures, yet our understanding remains in its infancy, with much yet to be uncovered."

Going to concerts and live performances is a lot of fun. As a teen, you'll want to prepare for the event far in advance in order to ensure that your concert experience is enjoyable.

Check to make sure that the concert venue(场所) is for all ages.

Some venues, particularly those that serve alcohol, will only allow entry for guests who are over 21 years old. {#blank#}1{#/blank#} If you buy a ticket and get turned away at the door, you likely will not get your money back.

Ask your parents for permission.

{#blank#}2{#/blank#} Have a conversation with your parents to figure out how you will travel to and from the concert, and talk about ground rules for staying safe at the event.

Find a friend to go with.

For your safety, it's best not to attend concerts alone. {#blank#}3{#/blank#} If you're having trouble finding company, consider posting on Facebook, Twitter, or Instagram to see if other people in your social network are interested.

Buy tickets.

If the concert is for a popular band, figure out exactly when the tickets go on sale. {#blank#}4{#/blank#}Ticketmaster. com sells tickets for bigger shows, but if you're going to a smaller show, look online at the venue's website for information on how to buy tickets.

Research venue policies and regulations.

Find the venue's web page to get a sense of what to expect, and to avoid any problem on the day of the concert. You should know how early the doors will open. {#blank#}5{#/blank#}