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Rebounding for Spinal Health

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Bouncing on a rebounder, or mini-trampoline, uses gravity, acceleration and deceleration to strengthen your muscles and joints, including the spine. Unlike running and jogging, you are not exposed to joint-jarring impact every time your foot lands on the trampoline. Your body will experience up to 1 1/2 times normal gravity but is low-impact since the bouncing surface absorbs the impact. Rebounding strengthens all of your bones, including your spine, and helps to move cerebral-spinal fluid and remove cellular waste for improved health.

Reduce Tension

A stiff back can inhibit your movements and make you feel tired. Gently rebounding on a mini-trampoline can help loosen up your spine joints and relax tight back muscles. Bouncing on a rebounder also helps to improve your balance and align your spinal column as your back muscles constantly adjust to maintain balance. Strengthening the back muscles by rebounding also helps to stabilize your spinal column.

Bone Health

Low-impact exercise, such as bouncing on a mini-trampoline, helps to strengthen the bones and improve and maintain bone health. People who suffer from osteoporosis may develop a rounded back due to softening of the bones of the spinal column. Rebounding can also help to prevent and can reverse the effects of osteoporosis. Rebounding is safer and more efficient at restoring bone and preventing bone loss than running or jogging. If you have been diagnosed with osteoporosis, see your doctor and follow her advice about exercise and rebounding.

Spinal Fluid Movement

Any exercise will help to move spinal fluid, but rebounding is a low-impact way to move spinal fluid with a low risk of injury. The body’s reaction to the up and down bouncing with increased gravitational force stimulates the movement of spinal fluid through the spinal column and moves lymphatic fluids around the body. Movement of the cerebrospinal fluid around the brain and in the spinal column helps to transport nutrients to the spine and brain and facilitate the removal of cellular waste.

Safety

A rebounder mini-trampoline is not a toy and should not be used by children. Keep your rebounder away from children. Do not attempt to perform tricks or high bounces on a rebounder. Falls from a mini-trampoline can result in serious injury. Always check your rebounder for tears, fraying or damaged springs. Use a rebounder only on a level surface away from low-hanging light fixtures and ceiling fans. Make sure there are no objects under or around the rebounder before jumping. Wear non-skid shoes or socks when bouncing to avoid falls. See your doctor to make sure you are healthy enough to use a mini-trampoline to exercise. Never use a rebounder with another person. If you become dizzy or disoriented, bend your knees to stop bouncing and wait until the dizziness subsides before continuing to exercise.

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The Use of Ceramic Ferrules in Stud Welding

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Ceramic ferrules are vital in the drawn arc stud welding process, and this blog can help you to understand it.

Ferrules are protective rings used to protect the stud during welding, and in a variety of applications, from fiber optics to stud welding. As a result, the materials involved in the welding process are less likely to be contaminated.

Small rings derived from ceramic material are called ceramic ferrules (also known as ceramic arc shields), which allows an effective drawn arc stud welding process to work. Without these, the procedure will be ineffective, and the welds will be weak. So, understanding how drawn arc stud welding works is critical.

First, the drawn arc machine is calibrated for the appropriate stud diameter. The stud is then positioned on the plate and prepared to be welded. When the process starts, the stud is slightly lifted from the plate and a pilot-arc follows.

Subsequently, the main arc that melts the stud tip into molten metal develops a metal pool on the plate. Next, the machine return-springs the stud to the plate, fusing it with the molten metal to make the extremely strong weld.

Ferrules are needed to contain the molten metal pool, preventing it from spreading ouward and leaving insufficient metal to fuse the stud to the plate and resulting in a sloppy finish.

The ceramic primarily protects the stud from the air, preventing porosity and contaminants during the welding process, and reduces UV exposure in the surrounding area. They form a ring around the stud, containing the molten pool between it and the plate. By containing the molten metal, the weld is shaped to create a neat join that is invisible and smooth.

When finished, the ferrule must be removed. Because they are ceramic, an operator easily chips away the ferrules to expose the finished weld.

They are essential, but there are some stud welding processes where they are not used, like short cycle stud welding that uses inert shielding gas in place of ferrules. It keeps contaminants in the air from affecting the molten metal, changing its properties and potentially weakening the weld. Likewise for capacitor discharge stud welding, because the different process eliminates the risk of molten metal spreading beyond the stud.

The simplest way to get ceramic ferrules for your drawn arc process is to order your drawn arc studs from Shanghai Ceratek Advance Ceramic Technology Co., Limited. All our DA studs, regardless of diameter or material, come with ceramic ferrules, so no need to pay extra for them because they’re an important part of the process.

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Apple Responds to the Market With New Products

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New products are on their way from Apple. The tech firm made it clear they have lots of items in their pipeline at their WWDC Conference this month.

First off is the company’s answer to Amazon’s Echo and Google’s Home called the HomePod. It is a seven inch device that will integrate Siri into an Echo/Home like case. You can use it to check the news, weather and control your smart home devices.

HomePod will offer an enhanced music experience. A feature called “Musicologist” will work with Apple music and stream the songs you request from Siri. The sound is designed to fill the room and take it to a level beyond what Amazon and Google are offering.

The device will be available in black or white. Price is around $349. The launch date is anticipated in December just in time for the holiday season.

Need a new desktop? Apple is updating its iMac with improved retina displays, a boost in graphics, Kaby Lake processors and a USB-C plug-in.

An iMac Pro is also on the way. This high-end machine has a 5K display with improved cooling capacity, and 8-core Xeon processor which is upgradeable up to 18-core. It also includes up to 4TB of SSD, up to 128GB of ECC memory, four Thunderbolt 3 ports, and built-in 10GB Ethernet.

Pricing is what you would expect from Apple. The new iMac starts at $1,099 for the 21.5-inch model, and $1,299 for the 4K model. MacBook Pro starts at $1,299, which includes the updated Kaby Lake processor. For those with deep pockets the iMac Pro with the Xeon processor starts at a whopping $4,999. Again a December shipping date in expected.

Speaking of “Pros” how about a new iPad Pro? The device will be available in three sizes including a brand new 10.5 inch model. Similar to the iPhone 7 it comes with a 12-megapixel camera and a 7MP selfie cam.

The iPad Pro supports USB 3.0 with 10 hours of battery life. A new feature called ProMotion reduces the Apple Pencil’s latency to 20 milliseconds. It adjusts the refresh rate based on what you are watching and can double it up to 120Hz. The 10.5 inch iPad Pro starts with a 64GB configuration. Pricing begins at $649. You can pick one up now.

Also of note is Apple’s new operating system, iOS11. It is in beta stage and has been released to developers. One area it will improve is multitasking on the iPad. Users will be able to pull up an app from the dock and drag it onto the screen in split-screen version. Like a MacBook you can use touch to hold and drag folders, files or photos. You can even drop them in a different app such as Mail or iMessage. The Apple Pencil will also enable handwritten text to be searchable from the Notes app.

The Apple Watch is also getting a “face lift”. New faces will display new bits of information such as Siri reminders. A Fitness Focus update provides NFC-enabled data sharing with gym equipment. Pair the two and you get the latest calorie burn and activity level.

Apple is letting developers know their tree is full of interesting new products and upgrades. It will be interesting to watch how the public responds in this latest round of Apple picking.

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Information Gap Activities – Working in Groups Or Pairs During Cooperative Learning Lessons

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Information gap activities are those in which students exchange information in order to complete a required lesson plan activity.

Most information gap activities are done in pairs, with each student having a part of the information. They are especially effective when used as vocabulary activities during the pre-reading part of a reading lesson, but they can also be applied to reading comprehension and math activities as well.

For example, this strategy can be used to teach new vocabulary from a passage students haven’t yet read. Student A would have the vocabulary words written on strips of paper and student B would have the definitions of those words. Working together, they pair words and definitions to learn new vocabulary.

Vocabulary Activities

Information gap activities such as the example below function as vocabulary lessons after students have already encountered the vocabulary in the text.

Teacher and/or class prepare 2 lists of about 20 items. List A contains people and animals. List B contains objects. The aim is to combine one words from List A with one from List B. Example: What can a/an A do with a/an B? Why does a/an A need a/an B? Students create a list of combinations.

Or, Student A has pictures of newly introduced words and student B has the matching words. When matched correctly, they create an interesting shape.

Math Activities

The same principles of information gap activities can also be applied to Math lesson. Student A measures triangles of various sizes while student B measures circles of various sizes. Together, they answer questions that relate to the relationship between them.

Reading Comprehension Activities

An information gap activity can also be used as a main reading task when students need to share information they read from an assigned passage. An especially effective information gap activity is A jigsaw reading which is a type of activity that is done usually in groups. In a jigsaw reading, the teacher can use academic texts or texts from the students’ coursebook.

In the traditional method of jigsaw reading, the teacher divides a text into sections and assigns each group a section to read. Each group is responsible for understanding its part. Then new groups are formed with one member from each previous team. The new groups now have one representative from each section and each can share what s/he understood from his or her part of text. Students then can either write a summary of the text or answer questions about the entire text.

How An Information Gap Activity Should Be Structured

Consider also the following main issues in your lesson plans:

* Purpose: What is the purpose of the activity? For example, is the purpose to introduce, reinforce, use or bridge the gap between letters and their corresponding sounds? Or, is the purpose to reinforce words and their meanings?

* Organization: Who is in control – the class or the teacher? Once you develop the necessary classroom management skills, you can effectively implement information gap activities.

* Length of Lesson: The element of time must be considered. How long will this activity take?

* Ability level: Consider the ability of the class, homogeneous or heterogeneous groupings, and adaptations such as a backup plan when students can’t do the activity as planned.

* Materials and procedures: What is needed for the lesson? How will the teacher present information gap activities.

* Who? The level of the students including the ability and grade.

* What? What is the context for your information gap activity?

* How? Through which new points will the main skills be introduced? Example: Will students need to read a passage containing the new words before matching words and their corresponding definitions in pair work?

Possible Problems Using An Activity on an Information Gap

What if your lesson didn’t go as planned? A potentially well planned information gap lesson can backfire due to neglect of one of the main planning issues (see above).

Classroom management is typically the reason why information gap activities do not go as planned. It is worthwhile to invest time therefore, in the principles of classroom management before implementing any information gap activity.

Information gap activities are user-friendly for the teacher to recycle previously taught information. Some will take more time to implement, but it is an investment well worth the effort.

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