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• Создано: 07-12-21
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yt-wire.com

Описание:  yt-wire.com Galvanized wire including Electro-galvanized Iron Wire and Hot-dip Galvanized Iron Wire is a type of steel wire that's undergone additional protection processes. Annealed wire is heated to restore ductility, but even that process leaves the metal with a few vulnerabilities. It can suffer from corrosion, scratches and will become much less effective over time. That leads to rust and can undermine the integrity of the wire, resulting in repair and even replacement costs. Galvanized wire is an additional step. It involves dipping the metal into a bath of molten zinc. When the zinc dries it confers a secondary layer of protection. Zinc is tough and used in the production of galvanized steel more generally. It’s resistant to scratches and, most importantly of all, corrosion. This dramatically increases the longevity of the wire, keeps costs low and ensures continued use. What are the benefits? #1 Resistant to corrosion Corrosion is caused by molecular exchange between metal and air. When metals come into contact with air, they lose some of their positive ions, leading to the formation of rust. Galvanized wire is highly resistant to corrosion. Zinc is renowned for its ability to resist oxygen and moisture and is often used to protect steel in the construction industry. A layer of zinc is frequently added to steel structures that are exposed to the elements. The zinc oxidizes instead of the steel, protecting the metal. Corrosion can be a big problem for wire, especially if it’s being used outdoors, but the layer of zinc confers protection that lasts. #2 Increased lifespan Zinc protected steel is renowned for its incredible lifespan, sometimes lasting hundreds of years before the coating needs to be reapplied. The same applies to galvanized wire. Although it can sometimes be harder to come by (since not all manufacturers are equipped to undertake the galvanizing process) and by extension slightly more expensive, galvanized wire pays for itself over time. Its tough exterior equates to a dramatically increased lifespan, so you’ll only have to replace it rarely, if ever. #3 Scratch resistant Wire is often exposed to all kinds of rough environments that can lead to scratches, damage and even breakages. Engineers across multiple sectors opt for galvanized wire because of its sheer robustness and ability to withstand all the rigors of long-term use. For example, 10 gauge galvanized wire is exceptionally durable and damage resistant. Depending on how you plan to use the wire, it can save both time and money. It limits breakages, lowers repair costs and means that you won't have to spend extensively on replacement wire. #4 Lowers inspection cost Galvanized steel of any kind saves on inspection and often maintenance costs, too. Since the wire is so well protected and robust, it doesn't need the same kind of arduous installation process (not to mention extensive checks) associated with other types of wire. It doesn't require any additional protection (like paints or sprays) or any surface preparation. Galvanized wire is highly economical, both in terms of longevity and decreased maintenance. There are also other kinds of wires such as PVC Coated Wire and Black Annealed Wire, and other products made by wire like Wire Mesh(Hexagonal Wire Mesh and Welded Wire Mesh). Remember for the wire or wire mesh, it is necessary to equip a Field Fence like Euro Fence and Chain Link Fence.  

Дата Публикации: 07-12-21

nanxingtec.com

Описание:  nanxingtec.com Are you interested in buying a cash counter machine and you are overwhelmed by the technology or the choices available? Well, you are not the only one that gets into such confusion. There are many factors that one needs to consider when they are buying a money counting machine. However, depending on where you want to use the machine, you may as well buy what is readily available. Some people do not want to use their money counting machines daily. In this case, you may not necessarily require a very expensive machine. You may also buy the cash counter machine based on the industry you are in. In this article, we shall discuss some of the tips that can help you in this respect. It is also called Counting Machine, Money Counter, and Bill Counter. Here are tips to help you choose a suitable cash counter machine: 1. Consider the size & weight of the machine This is a very important factor you should consider when buying a money counter. If your office or workspace is cramped and you do not have a lot of space, you may want to buy a compact counter. In the same breath, if you are going to be moving the money counting machine constantly, you may still want to buy one that is compact and lightweight for ease of movement. 2. Consider the counting speed The more money the machine can count, the better for you. As such, you want to buy a machine that can count money at high speeds, therefore bringing in more efficiency. This again will be determined by the size of your company. If you count large amounts of notes you will want to buy a money counting machine that can do this in the shortest possible time. Keep an eye out for the maximum counting speeds for the best value for your money. 3. Consider the hopper capacity The hopper capacity refers to the number of banknotes that can be accommodated by the cash counting machine at one go. This is good for gauging the volume of notes that can be counted at once. There are counter machines that Can accommodate up to 300 notes in their hopper space. Some heavy-duty counter machines can hold up to 500 notes. You may also want to consider whether the counter machine is back or front-loaded. Front-loaded hoppers are known to have a high capacity of notes and are better in performance. 4. Multi-Currency There are money counting machines that can handle a mixed currency. These machines can count and even organize the different currencies. With these machines, the different currencies can be detected automatically. This may not be such a big factor to consider where one is dealing with one currency. 5. Mixed bill value detection Some money counters can count notes with mixed values. This is a very important factor that you need to consider as it can save you time. As for the standard bill counter, one will need to pre-sort the bills based on their value before such bills are counted. Another significant machine used in the bank is probably Money Detector, which is also named as Bill Detector, Money Checker and Counterfeit Detector. A currency detector or currency validator is a device that determines whether notes or coins are genuine or counterfeit. These devices are used in a wide range of automated machines, such as retail kiosks, supermarket self checkout machines, arcade gaming machines, payphones, launderette washing machines, car park ticket machines, automatic fare collection machines, public transport ticket machines, and vending machines. The process involves examining the coins and/or notes that have been inserted into the machine, and conducts various tests to determine if the currency is counterfeit. Because the parameters are different for each coin or note, these currency acceptors must be correctly programmed for each item to be accepted. There are also other equipments may used in the bank like UV Sterilizer, IR Thermometer and Infrared Thermometer.  

Дата Публикации: 07-12-21

lbtrampoline.com

Описание:  lbtrampoline.com Trampolines are popular among kids and adults, but there's no denying they're dangerous. Whether kids are supervised at an indoor park or jumping on a trampoline in the backyard, there's always risk for significant injury. This makes trampolines inappropriate and dangerous for play. Should you let your kids use trampolines? The American Academy of Pediatrics suggests trampolines should never be used unless athletes are being supervised in training for a sport like diving or gymnastics. As the weather warms each season, however, pediatric orthopaedists tend to see an increase in fractures. "Kids have been cooped up all winter long," pediatric orthopaedic surgeon Ryan Goodwin, MD, says. "We expect to see 8FT Trampoline and bicycle fracture rates rise." Dr. Goodwin has treated trampoline injuries where bones are broken so severely that they need emergency surgical repair. And it's not just fractures. Concussions, head and neck injuries, sprains and strains are also common. How often do kids really get injured on Mini Trampoline? Despite your kids pleading and reassuring you they'll be fine, here's some data to help you stay fast in your decision to say "No." Research reported nearly 100,000 trampoline-related injuries in a one-year period among children. Small children are 14 times more likely to get hurt than bigger children.Three-quarters of all trampoline injuries occur when multiple kids are jumping at one time. Falls are the major culprit when it comes to injury. According to the American Academy of Pediatrics, botched somersaults and flips are often the cause of cervical spine injuries with permanent injury. Safer outdoor activities are suggested to recommend to kids instead. Just because Big Trampoline parks are common and trampolines of all sizes dot your neighborhood in summer doesn’t mean there aren't other alternatives for exercise. How to reduce trampoline injuries? If you already have a trampoline and want to keep using it, here are some safety rules that should be followed at all times: Only allow one person to jump at a time. Make sure the springs are covered. Install a safety net around the perimeter of the trampoline. Ensure the trampoline is set on level ground with other Trampoline Accessories settled. Avoid somersaults or flips. Provide adult supervision at all times. Many injuries still occur despite adult supervision, Dr. Goodwin notes. Because of the overall risk, many homeowners insurance policies don't cover trampoline-related injury. The absolute safest way to avoid trampoline injury? Stay off of them.  

Дата Публикации: 07-12-21

laser-cutter.com.cn

Описание:  laser-cutter.com.cn Laser is an amazing operating method in the modern society. Many Laser Machines like Laser Cutting Machine and Laser Welding Machine are used in plenty of industries and companies. Why lasers are used for cutting? Lasers are used for many purposes. One way they are used is for cutting metal plates. On mild steel, stainless steel, and aluminum plate, the laser cutting process is highly accurate, yields excellent cut quality, has a very small kerf width and small heat affect zone, and makes it possible to cut very intricate shapes and small holes. Most people already know that the word “LASER” is actually an acronym for Light Amplification by Stimulated Emission of Radiation. But how does light cut through a steel plate? How a laser cutter works? The laser beam is a column of very high intensity light, of a single wavelength, or color. In the case of a typical CO2 laser, that wavelength is in the Infra-Red part of the light spectrum, so it is invisible to the human eye. The beam is only about 3/4 of an inch in diameter as it travels from the laser resonator, which creates the beam, through the machine’s beam path. It may be bounced in different directions by a number of mirrors, or “beam benders”, before it is finally focused onto the plate. The focused laser beam goes through the bore of a nozzle right before it hits the plate. Also flowing through that nozzle bore is a compressed gas, such as Oxygen or Nitrogen. Focusing the laser beam can be done by a special lens, or by a curved mirror, and this takes place in the laser cutting head. The beam has to be precisely focused so that the shape of the focus spot and the density of the energy in that spot are perfectly round and consistent, and centered in the nozzle. By focusing the large beam down to a single pinpoint, the heat density at that spot is extreme. Think about using a magnifying glass to focus the sun's rays onto a leaf, and how that can start a fire. Now think about focusing 6 KWatts of energy into a single spot, and you can imagine how hot that spot will get. The high power density results in rapid heating, melting and partial or complete vaporizing of the material. When cutting mild steel, the heat of the laser beam is enough to start a typical “oxy-fuel” burning process, and the laser cutting gas will be pure oxygen, just like an oxy-fuel torch. When cutting stainless steel or aluminum, the laser beam simply melts the material, and high pressure nitrogen is used to blow the molten metal out of the kerf. On a CNC laser cutter, the laser cutting head is moved over the metal plate in the shape of the desired part, thus cutting the part out of the plate. A capacitive height control system maintains a very accurate distance between the end of the nozzle and the plate that is being cut. This distance is important, because it determines where the focal point is relative to the surface of the plate. Cut quality can be affected by raising or lowering the focal point from just above the surface of the plate, at the surface, or just below the surface. There are many, many other parameters that affect cut quality as well, but when all are controlled properly, laser cutting is a stable, reliable, and very accurate cutting process. As for Laser welding, it is one of the oldest applications of industrial laser materials processing. In the majority of early applications, lasers produced higher quality welds and allowed for greater productivity. Often times, it was at a lower cost compared to other joining processes, even though the parts being welded were originally designed based on a different joining process. Much has changed, however, since those early days of laser welding. For starters, the classes of lasers have changed. Laser sources now have higher power, different wavelengths and a wider range of pulsing capability. Accordingly many Accessories for laser machine came into being. Add to this the new developments in beam delivery, machine control hardware and software, process sensors and a better understanding of the laser welding process.   

Дата Публикации: 07-12-21

kingtexview.com

Описание:  kingtexview.com It is one thing to master a cocktail recipe—that impeccable Negroni ratio, the exact length of time to stir a Martini, the just-right orange liqueur and cognac to make a killer Sidecar. It is quite another thing to make that cocktail with style. And style is not spilling a half-ounce of vermouth on the table, dashing ice cubes across the kitchen floor, and cutting lime wheel garnishes so thick they topple the coupe. You need the right tools of the trade to have any hope of aping the grace of a professional bartender (we miss them dearly), and on behalf of your bar cart, you also need tools that look the part. So instead of piecing together a random at-home setup, go for the visual cohesion of a bartending kit. Here, you'll find both basic and more extravagant kits such as Whisky Set or Whisky Gift Set, Wine Tools like Corkscrew and Wine Rack, Cocktail Mixing Glass Set and Cocktail Tool Set With Suitcase. Make the call on the shaker versus mixing glass, how much physical space you can dedicate to the cause, and whether your drinking habits really require the addition of a muddler. If you don't know a 1x2oz. jigger from the can opener under the sink, you can read up on all the traditional bartending tools in our home bar guide. And if you don't know any cocktail recipes, well, get to studying. From toil comes great reward and such a nice, harsh-mellowing buzz. In just a few years, the bar industry will be radically different. It is a booming business. With the cocktail renaissance in full swing, more people are looking for quality drinks and bars that can provide them. This has led to an influx of new bars opening up across the country, as well as many bartenders looking for work. While this is great news for bartenders who want to find a job, it also means that there are now more bars than ever before vying for customers who have limited time and money. It is necessary to have these epuipments in a bar like Bar Set, Matel Cup & Mug, Automatic Wine Corkscrew,Wine Stopper and of course, bartender tools. There are Bartender Tools You'll Need. A cocktail strainer is a utensil used to remove solids from cocktails and other liquids. This tool is typically employed after shaken drinks, catching any fruit bits or ice in the liquid before it goes out. A stirring spoon, also known as a cocktail stirrer, is the perfect tool for bartenders to measure, layer and stir cocktails. Its stainless steel construction is sturdy and can be washed clean with soap and water. Not only does it give your customers their drinks their preferred taste but it won’t affect the flavor of your customer's. A cocktail shaker is also on the list ofvaluable bar accessories that you should never go without. The item is useful when mixing cocktails such as cosmopolitans and martinis. It eases the idea of having to come up with a perfect blend that has balanced flavors. It is the best choice if you are looking for something much cheaper than a cocktail mixer as well. Most bartenders and mixologists use it when making a single cocktail. What makes it even more remarkable is that you can use it to make both non-alcoholic and alcoholic drinks. You should, however, make sure you rinse the shaker well enough when switching between those two categories. The item enables you to diversify drinks and makes it easy to explore newrecipes. There are also various types of cocktail shakers for you to pick from, including Parisian, Cobbler, and Boston cocktail shakers. The easiest shaker to use is the Cobbler or the 3-piece cocktail shaker. That is because it comes with a lid and a strainer making the mixing fun. When picking a type of shaker, you should ask yourself what your level of expertise is and how you like your cocktails. If you are an expert, consider the Boston shaker.  

Дата Публикации: 07-12-21

hongdewindows.com

Описание:  hongdewindows.com Aluminum windows and doors have become increasingly popular for both commercial and residential buildings. Aluminum window frames can be made to match almost any color and home style. They can also be made in a range of different configurations including Aluminium Casement Windows, double-hung windows, Aluminium Sliding Windows/doors, awning windows, fixed windows, and lift and slide doors. Here are some reasons why you should choose aluminum. Durability Aluminum windows are far less prone to warping; they are weather-proof, corrosion-resistant and immune to the harmful effects of UV rays, ensuring optimal performance with a long lifespan. Their strong window frames will last longer than wood and vinyl frames. Variety of Color Options Aluminum windows can be powder coated or anodized in thousands of colors. The only limitation in color is your imagination. Energy Efficient Because aluminum is light, malleable and easy to work with, manufacturers are able to produce window frames that offer high levels of wind, water, and air-tightness, which means exceptional energy efficiency. Cost efficient Aluminum windows are far less expensive than wood frames. They do not leak; therefore, they can save a ton of money on energy bills. Low Maintenance As opposed to wood, aluminum does not warp or decay. Additionally, paint touchups are not needed. Aluminum is strong enough to bear the load of window lintels with minimal reinforcement. Aluminum windows are virtually maintenance free. Better Operability Aluminum is a durable substance and will keep its shape over time. Therefore, aluminum windows and doors will continue to open and slide smoothly over the years. Noise Proof Aluminum windows are much better at stopping noise than vinyl windows. Since they are three times heavier and many times stronger than Vinyl. Also, aluminum windows are best when you're opting for the soundless feature due to the fact that they can support heavier glazing than other solutions. Safety Features The linkage hardware around the window sash and the handle operating make the window have excellent safety and security. Also, aluminum windows are highly resistant to forced entry and have high-quality multipoint locking mechanisms, which makes it impossible for people to break-in.  

Дата Публикации: 07-12-21

dropshost.com

Описание:  dropshost.com Pressure washing including Electric Pressure Washer and Gas Pressure Washer has quickly become one of the preferred methods of cleaning a variety of surfaces in both residential, commercial, and business locations. From sidewalks and patios to residential home exteriors, pressure washing is suitable in a number of different cleaning contexts. Pressure washing is an excellent way of maintaining or restoring the look of the home, with many realty agents recommending that potential sellers invest in a pressure wash as a way of boosting the curb appeal and listing price of their home. When used to treat concrete sidewalks, pressure washing is a quick, easy, and efficient way of removing all manner of dirt or salt deposits that contribute to surface weathering. If you are worried about having to invest time and energy replacing another stained deck, then pressure washing may be your answer, as it is one of the best ways to boost their longevity. Read on to learn about the many benefits of pressure washing! Pressure washing is easy for everyone. Conventional cleaning tasks typically require a lot of time, energy, and elbow grease. With pressure washing, there is no need to scrub and strain to unsettle stubborn debris. Save your back and joints the effort. Pressure washers let you maintain a strong upright posture and direct the force of the water towards unwelcome stains. The set-up required for a pressure washing treatment is also quite simple, involving about as many steps as it would require to find soap, sponges, and fill a bucket. Simply affix a water hose to the pressure washer unit, and either plug it in or add fuel to its power source to begin. Pressure washing saves serious time. Compared to regular cleaning methods, pressure-washing is an anti-bacteria blitzkrieg. When you invest in a professional pressure washing, you are cutting out the need to gather materials, prepare a cleaning solution of appropriate strength, and undergo a rigorous half-day or more of scrubbing. Pressure washing eliminates the need for time-consuming ladder work, allowing you to simply point the nozzle towards hard-to-reach areas. Pressure washing keeps your family safe. Your home houses more than family. On decks, exterior walls, and sidewalks you will find a number of unique contaminants, varying in severity from dirt to harmful mold. Pressure washing blasts these potentially harmful substances away, keeping your family breathing the purest air possible. Pressure washing away algae or other slippery substances also minimizes your family's risk of slips or falls at home. Furthermore, regular pressure washing treatments are considered part of an overall preventative maintenance effort that can keep your home safe and in-shape. Keeping your home clean hinders the premature decay of your porch, driveway, or deck, improving safety outcomes. Pressure washing boosts curb appeal. When realty agents are asked by motivated sellers how they can distinguish their homes from countless other listing competitors, they often reply that increasing curb value is an effort well-invested. Curb appeal allows your home to stand out from other home listings, and will draw in many more interested buyers when it comes time to host a viewing. Many of the actions taken to improve curb appeal can be completed faster and more thoroughly using a pressure washer. Boosting curb appeal is often done by shaping up the condition of the driveway and bordering sidewalks, or by cleaning unattractive mildew off of the home’s exterior. Pressure washing can take care of all of these tasks in a breeze, preserving your time and energy for more pressing issues faced when entering in to an unruly realty market! Pressure washing is easy on the environment. Heavy-duty cleaning is commonly associated with the application of harmful chemical cleaners. These cleaning solutions can be very effective, but typically enact a heavy toll on the environment. Pressure washing does not introduce any harmful chemicals into the environment. Pressure washers work by blasting water at high velocity, and the power of this water stream is often sufficient to lift stains and mildew without the need for harmful chemicals. Pressure washers also use less water when compared to the amount used by a garden hose tackling the same kind of job. The amount of force applied by pressure washers means that much less water will be needed overall, with some estimates suggesting that as much as 75% of water is saved using pressure washing. This is because a pressure washer expels water at roughly 50 times the force of a garden hose. This allows the smallest amount of water to be granted the greatest amount of cleaning power.  Except for the pressure washer, Sprayers also play an effective role in vleaning or house keeping, like Electric Sprayer, Power Sprayer and Manual Sprayer.             

Дата Публикации: 07-12-21

cnhotellinens.com

Описание:  cnhotellinens.com Towels are the most commomly used products in our dailt life. A towel is a piece of absorbent fabric or paper used for drying or wiping a body or a surface. It draws moisture through direct contact. In households, several types of fabric towels are used, including hand towels, bath towels, and kitchen towels. At the beach, people use beach towels. Paper towels are provided in commercial or office bathrooms via a dispenser for users to dry their hands. In households they are used for minor, precision, or particularly dirty jobs of wiping, cleaning, and drying. Nothing feels better than wrapping yourself up in a cozy towel after you get out of the tub or shower. If your towel is feeling rough or isn't drying you off quickly, chances are it's time for an upgrade. The problem is there are so many bath towels to choose from at a wide range of price points, so it's not exactly easy to shop for bath towels, especially when you're unsure of how they'll hold up over time. If you want a super soft, ultra-absorbent towel, look for 100% cotton with dense, plush loops of yarn on the surface. You can also look at fabric weight, which is shown in GSM. Over 600 GSM is considered heavy, so these will typically be the most plush. Lighter towels like waffle weaves or ribs weren't typically as soft in our test. If you want a towel that's quick-drying and more durable, consider a cotton-poly blend or a lighter fabric with a low pile (short loops). Fluffy loops help the towel feel soft and absorb water, but they can take longer to dry and may show more wear from laundering. As for the stuff for bath or bedroom, there are also many tpyes except for the towel. Visit a bed and bath store, and you'll find aisle after aisle devoted to every type of bedding. There are comfortable, soft sheets that make sliding into bed a joy; blankets that warm up chilly winter nights, and many different types of bedding toppers such as Mattress Toppers, Pillows & Pillow Cases and Bathrobe. The last category is where confusion might set in—comforter, duvet cover, quilt, bedspread: What’s the difference, and why should you choose one over the other, anyway? While sheets and blankets are mostly functional, the bedding topper has a more decorative purpose—it sets the pace for your bedroom’s style and feel. So when it's time to give your bedroom a new look, it helps to know which type of topper is the best choice for your space. Typically, comforters are defined as thick bedding toppers filled with down or a synthetic substitute. Many comforters are sewn-through or quilted to keep the filling in place, but unlike a quilt, a comforter’s stitching is not ornately patterned. The amount and type of fill determine how much warmth a comforter provides. Probably the most popular type of bedding topper in the U.S., you can find comforters in just about any theme, color, style, or design you desire. Cotton, cotton blends, and synthetics are the most common fabrics. Comforters are usually warm enough to use without a blanket underneath. Often, you'll find comforters sold as a set with matching shams. Without doubt, these toppers are also highly needed in the hotel. Therefore, a lot of similar products specially designed for hotel come into being. Except for the product mentioned above, there are also Hotel Linen and Hotel Fabric.  

Дата Публикации: 07-12-21

chn-alu.com

Описание:  chn-alu.com Aluminum (Al), also spelled aluminium, chemical element, a lightweight silvery white metal of main Group 13 (IIIa, or boron group) of the periodic table. Aluminum is the most abundant metallic element in Earth's crust and the most widely used nonferrous metal. Because of its chemical activity, aluminum never occurs in the metallic form in nature, but its compounds are present to a greater or lesser extent in almost all rocks, vegetation, and animals. Aluminum is concentrated in the outer 16 km (10 miles) of Earth's crust, of which it constitutes about 8 percent by weight; it is exceeded in amount only by oxygen and silicon. The name aluminum is derived from the Latin word alumen, used to describe potash alum, or aluminum potassium sulfate, KAl(SO4)2.12H2O. Aluminum is added in small amounts to certain metals to improve their properties for specific uses, as in aluminum bronzes and most magnesium-base alloys; or, for aluminum-base alloys, moderate amounts of other metals and silicon are added to aluminum. The metal and its alloys are used extensively for aircraft construction, building materials, consumer durables (refrigerators, air conditioners, cooking utensils), electrical conductors, and chemical and food-processing equipment. Pure aluminum (99.996 percent) is quite soft and weak; commercial aluminum (99 to 99.6 percent pure) with small amounts of silicon and iron is hard and strong. Ductile and highly malleable, aluminum can be drawn into wire or rolled into thin foil. The metal is only about one-third as dense as iron or copper. Though chemically active, aluminum is nevertheless highly corrosion-resistant, because in air a hard, tough oxide film forms on its surface. There are also other aluminum contents like 1050 Aluminum, 1060 Aluminum, 1100 Aluminum, Alloy Aluminum, 2A12 Aluminum, 3003 Aluminum, 5052 Aluminum, 5083 Aluminum, 5754 Aluminum, etc. Aluminum is an excellent conductor of heat and electricity. Its thermal conductivity is about one-half that of copper; its electrical conductivity, about two-thirds. It crystallizes in the face-centred cubic structure. All natural aluminum is the stable isotope aluminum-27. Metallic aluminum and its oxide and hydroxide are nontoxic. Aluminum is slowly attacked by most dilute acids and rapidly dissolves in concentrated hydrochloric acid. Concentrated nitric acid, however, can be shipped in aluminum tank cars because it renders the metal passive. Even very pure aluminum is vigorously attacked by alkalies such as sodium and potassium hydroxide to yield hydrogen and the aluminate ion. Because of its great affinity for oxygen, finely divided aluminum, if ignited, will burn in carbon monoxide or carbon dioxide with the formation of aluminum oxide and carbide, but, at temperatures up to red heat, aluminum is inert to sulfur. Aluminum can be detected in concentrations as low as one part per million by means of emission spectroscopy. Aluminum can be quantitatively analyzed as the oxide (formula Al2O3) or as a derivative of the organic nitrogen compound 8-hydroxyquinoline. The derivative has the molecular formula Al(C9H6ON)3.   

Дата Публикации: 07-12-21

a2zcreate.com

Описание:  a2zcreate.com Greeting cards are an illustrated message that expresses, either seriously or humorously, affection, good will, gratitude, sympathy, or other sentiments. Greeting cards are usually sent by mail in observance of a special day or event and can be divided into two general classifications: seasonal and everyday. Seasonal cards, also called Holiday Cards, include those for Christmas, Valentine's Day, Mother's Day, Father's Day, Easter, graduation, Halloween, and St. Patrick's Day. Everyday cards include those commemorating birthdays, anniversaries, or births; cards of condolence, congratulations, or friendship; as well as get-well cards, gift cards, bon voyage cards, and thank you cards. Modern greeting cards are usually of stiff paper or cardboard, but some are made of cloth, leather, celluloid, vellum, metal, or even wood, clay, cork, or other materials. Size is determined by common usage, the availability of suitable envelopes, ease of mailing, and the system of grading according to price and quality. There are also some kind of cards with neoteric design like Laser Card and 3D Greeting Cards. Somenody even use Sticker and Washi Tape to decorate the card. Extreme exceptions include an inscribed grain of rice presented in 1929 as a Christmas greeting to the prince of Wales and a Christmas card sent to Pres. Calvin Coolidge in 1924 that was 21 by 33 inches (53 by 84 cm). The imprinted messages on cards may vary in length from a brief word or two to 100 words or more in prose or verse. The exchange of illustrated greetings among friends dates from ancient times. In Egypt the new year was celebrated by the exchange of symbolic presents, such as scent bottles and scarabs inscribed au ab nab ("all good luck"). The Romans exchanged strenae, originally branches of laurel or olive, frequently coated with gold leaf. Symbols of seasonal good will, such as a Roman lamp impressed with the figure of Victory surrounded by strenae, were inscribed with Anno novo faustum felix tibi sit ("May the new year be happy and lucky for you"). The acknowledgment of the new year with exchanges of good will continued in Europe through the early days of Christianity. Speaking of cards, I thought of another paper product that is used most often - Notebook. We all saw it over and over during the pandemic year: In the face of remote and hybrid learning, students spent hours tethered to iPads and Chromebooks, all day, every day. While such technology thankfully allowed for online learning that would have been inconceivable a decade ago, excessive screen time has been linked to a host of deleterious effects. Students using devices to take notes are often bombarded with updates, messages, and notifications, plus they’re distracted by the ever-present temptation to search the web. Authentic learning, however, requires concentration and deep, uninterrupted immersion in a topic. In a bid to reclaim some balance between digital and analog learning, Many students are required to use paper notebooks this coming year. Paper notebooks can help draw young people's attention away from screens, and they offer several educational benefits. Using a notebook compels students to become more deliberate in the organization and presentation of their notes. Plenty of apps provide ways to create and manage notes, but I’ve found that using notebooks places more responsibility on the students to find, adapt, and stick to a method that works best for them. And there is always a tpyes of notebook to fit your love of using habit. For example there are PU Notebook and Spiral Notebook. If that is not enough, it is very normal to add some Sticky Notes on the notebook as a additonal content. 

Дата Публикации: 07-12-21