User blogs

Chilean engineers look to disinfect spaces with a high exposure to the virus

A group of Faculty and students from Electrical, Mechanical and Metallurgical Engineering from PUC, supported by Infectiology experts, and in collaboration with the Complex Systems Engineering Institute, developed a low cost ozone generator to eliminate virus in critical spaces. The project leader is Vladimir Marianov, Professor at the Electrical Engineering department and Deputy Director of the Complex System Engineering Institute.Get more news about ozone generator,you can vist our website!

This PUC Engineering project is part of the interdisciplinary working commission promoted by the office of the Vice Provost for Research, together with the Medical School, the Innovation center, and other Faculties of the university, through the contribution of new ideas (covid19.ing.puc.cl) to face the peak of the pandemic.

“Our low cost ozone generator, to disinfect critical areas, seeks to reduce the spread of covid-19, considering that this virus is highly contagious and can remain on surfaces for days”, said Javier Pereda, PUC Professor of Electrical Engineering, who is in charge of technical aspects.

“Hence the idea to use ozone in this cheaper and easier to scale version, because it is a powerful disinfectant, superior to chlorine. In only minutes, it has been proven that eliminates similar virus, like SARS, in up to a 99.99%”, said Pereda. One of our contributions is adding a system that can control the ozone concentration in the space is being treated.

The professor specified that ozone can be generated through a considerable electric field, which transforms oxygen from the air into this gas, which has an intense oxidizing power, capable of deactivate the virus by attacking its membrane.

“We have managed to generate ozone with a low cost equipment, with materials that can be found mostly off the shelf in the country. The system fits in a small box, which connects to an electrical network, managing to disinfect complete spaces in only 20 minutes of operation”, said the specialist.

The team of engineers is about to test this technological solution in reanimation rooms, operating rooms, emergency rooms, ambulances and waiting areas. They also seek to use this technology in public transportation, among other uses.

Do you know compressor, condenser and expansion valve in ice machine?

Usually,The ice machine composition includes compressor, condenser, expansion valve, evaporator and control system. And now we talk about the compressor, condenser and the expansion valve.Get more news about Condenser Expansion Machine,you can vist our website!

1. The role of refrigeration compressor of industrial ice machine

The refrigeration compressor is the most important equipment in the refrigeration device（industrial ice machine）, usually called the host in the refrigeration device. The increase of refrigerant vapor from low pressure to high pressure and the continuous flow and transportation of vapor are all accomplished by the work of the refrigeration compressor. In other words, the role of the refrigeration compressor is:

1) Absorb refrigerant vapor from the evaporator to ensure a certain evaporation pressure in the evaporator.

2) Increase the pressure to compress the low-pressure and low-temperature refrigerant vapor into high-pressure and high-temperature superheated vapor to create conditions for condensation at higher temperatures (such as the temperature of about 35°C in summer).

3) Transport and push the refrigerant to flow in the system to complete the refrigeration cycle.
2. According to different types of cooling medium, condensers can be classified into four categories, and their functions are as follows:

⑴Water cooling type: In this type of condenser, the heat released by the refrigerant is taken away by the cooling water. The cooling water can be used once or recycled. Water-cooled condensers can be divided into vertical shell and tube type, horizontal shell and tube type and sleeve type according to their different structure types.

⑵ Air-cooled (also called air-cooled): In this type of condenser, the heat released by the refrigerant is taken away by the air. The air can be natural convection, or a fan can be used for forced flow. This type of condenser is used in Freon refrigeration devices where water supply is inconvenient or difficult.

(3) Water-air cooling type: In this type of condenser, the refrigerant is cooled by water and air at the same time, but it mainly relies on the evaporation of cooling water on the surface of the heat transfer tube to absorb a large amount of heat from the refrigerant side as water The latent heat of vaporization, the role of air is mainly to accelerate the evaporation of water and take away water vapor. Therefore, the water consumption of this type of condenser is very small, and it is the preferred type of condenser for areas with dry air, low water quality, low water temperature and insufficient water volume. This type of condenser can be divided into two types: evaporative type and shower type according to the different structure types.

⑷ Evaporation-condensation type: In this type of condenser, the cooling effect produced by the evaporation of the refrigerant in another refrigeration system is used to cool the refrigerant vapor on the other side of the heat transfer partition, and promote the latter to condense and liquefy. Such as the evaporator-condenser in the cascade refrigerator.

3. The role of the expansion valve in the industrial ice machine: the expansion valve plays the role of throttling and reducing pressure. When the high-pressure refrigerant liquid condensed by the condenser passes through the throttling valve, the pressure drops due to obstruction, causing part of the refrigerant liquid to vaporize and absorb The latent heat of vaporization, its own temperature is also correspondingly reduced, becomes low temperature and low pressure wet steam, and then enters the evaporator.

Review – Double deck roll forming machines

Double deck roll forming machine is a type of machine can create a variety of forming profiles to provide to the sheet metal market a diversity of utility choices and good options to constructions. Vietsteel Ltd will detail some information about some most common double deck roll forming machines available on the market.Get more news about double deck compression forming machine,you can vist our website!

At present, Vietsteel can provide 4 series lines of double deck roll forming machines as the result of combinations of the two roll forming decks within the machine: both roofing roll forming decks (DR), a roofing roll forming deck and a corrugated roll forming deck (DC), a roofing roll forming deck and a Step tile roll forming deck (DS), a Step tile roll forming deck and a corrugated roll forming deck (SC). Each line includes two models with different forming speeds. Our customers have a diversity of options.

The Advantages of Double Deck Roll Forming Machine

The machine has excellent forming speed, high production efficiency, output sheeting are at great quality. The double deck roll forming machines by Vietsteel help businesses save time, resources and operating costs.
Costs and prices are reasonable.
The machine produces products with almost absolute accuracy, with minimum tolerance figures in shape and size.
Machines work steadily for 15 years with 1 year warranty.
Double deck roll forming machines can produce sheeting for many different thicknesses, colors, materials upon customers’ orders.
The origins of machines and components are clearly verified. For our clients, Vietsteel’s team will advise the right model that is suitable with the business situation.

Top Loader Holder

Works with Ultra Pro 3 x 4 and same sized Top Loaders. Our Top Loader Holder is dual sided for two methods of display. Side A with a clean finish for viewing and Side B which has a plaque insert for the card name or a custom name. The top piece adds extra protection and will secure any particles and dust from entering the top loader and sleeve.Get more news about toploader holder production,you can vist our website!

PHX Hobbies started with one goal in mind - Customer satisfaction! Each and every item printed by an artist who is passionate about their work. I will always work hard to ensure you are happy with your product and always will be available for any questions you may need! Custom work also available by request.

Please Note: This item is 3D printed and goes through a personal quality control for overall best quality. 3D printing creates these models by laying down layers of plastic material very precisely until the model is completed. Each of these layers can be seen as a thinly sliced horizontal cross-section of the model and due to this you may see what is known as "Layer Lines" or minor pumps. I have taken up close photos of all my products for your viewing pleasure and will always stand behind my craftsmanship!

Best Way to Store Baseball Cards: Comprehensive Guide

This is a detailed guide for learning the best way to store baseball cards, and protect them from damage.Get more news about toploader holder manufacturer,you can vist our website!

We’ll discuss how to store baseball cards in the most popular baseball card holders, including where to buy baseball card sleeves, top loaders, Card Savers, baseball card storage boxes, and even glass storage cases to show off your collection.

Keep in mind that these baseball card holders will work to store other sports cards, too, including basketball, football, and hockey cards, along with gaming cards such as MTG and Pokemon. Be sure to read about our best Pokemon cases as well.
Most card collectors learn how to store baseball cards by being introduced to baseball card sleeves — also known as plastic card sleeves or penny sleeves — right when they first start collecting. They are the most basic baseball card holders.

Plastic card sleeves are a mandatory supply if you have any baseball cards laying around, and plan to keep them in mint condition. Given they’re super cheap, flexible, and work well with other types of trading card storage cases, just decide how many you need and buy them.

Using baseball card sleeves ensures your trading cards are protected from any dust, debris, fingerprints/oils, or minor surface damage from simply moving cards around.
Very Affordable: Baseball card sleeves usually come in counts of 100 per pack, and are priced just around $2.00 for a pack. A quick look on Amazon and you can see a 10-pack of 100 count (so 1,000 sleeves) for around $20. Or simply check on eBay if you just need a single pack or two for under $5.

Flexible: Baseball card sleeves are very flexible as they are made of thin plastic. It is very common to store a trading card inside of a plastic card sleeve first, and putting the sleeve inside a Top Loader as well. This prevents the card from shifting around in a Top Loader case (discussed in the section that follows below).
Disadvantages
Not robust: Penny sleeves are not an ideal way to protect your baseball cards. Outside of superficial baseball card protection, don’t expect to simply use penny sleeves alone when storing your cards safely.

Hard to maneuver: While penny sleeves are flexible and affordable, you can easily cause corner wear on your trading cards if you’re not careful loading and unloading cards.

Best Advice
Most collectors preserve their sports cards by putting raw (ungraded) cards in a penny sleeve –> then into a top holder –> then into a team bag just for extra security. Also store them in a cool, dark, dry place (e.g. in a closet).

Spandex Denim Anti-back

It provides superior dispersion performance of making the pocket anti back staining agent brighter and making the contrast between blue and white better, especially when used on the color mixing fabrics. Besides, it is suatable to be used with acid enzyme and neutral enzyme in the denim washing process.Get more news about pocket anti back staining agent,you can vist our website!

Under the same wash conditions and with the same amount of anti-back staining additives, we put a cotton, a polyester and a spandex denim pinned together in the washing machine. The left side of the photo above shows the test results with the addition of the same type of products from other companies, while the right side shows the results with our product V8.
As you can see, our product has outstanding anti-back staining effect in practical use, less dye staining back, and better performance on both fabrics. And by comparison, the spandex denim also did not have the problem of losing elasticity, and the protection of fabric elasticity was better.

Denim and its various items like pants, shirts, jackets,belts, caps, etc, are the most preferred clothing for todays youth. This studydiscusses compositions and methods of reducing or preventing back staining ofindigo dyes on the weft yarn and pocket of denim garments. The dye, as it is removedfrom the denim material, post treatment with cellulase or by a conventionalwashing process may cause back staining or re-deposition on the denimmaterial; e.g.: re-colouration of blue threads and blue colouration of whitethreads, resulting in less contrast between the blue and white threads.

Denim garments are looked at as a major trend setter by our youth.The spread of denim culture all over the world brought with it a trend of fastchanging fashions. One after another several washes were introduced such asstone wash, acid wash, moon wash, etc. Over the last decade, India has probably seen the most dramatic and exciting changes in the washing of denimgarments. As per the denim garment export market, this high quality garment hassuperior aesthetics and great value for price. In terms of the quality aspect,back staining plays a vital role in improving the appearance of the denimgarment.

During stone washing or enzyme washing, cellulose isdegraded and indigo dye is released. For instance, the cellulase enzymes aretemporarily bound to the cellulose by means of an anchor. This gets split in termsof 1,4-β glycoside composition. After this process it is made availablefor further hydrolysis reaction.

Techik Rice Wheat Grain Optical Color Sorter is widely used for sorting and sorting different kinds of rice, grain, wheat based on size, shape and color difference.You can choose different models of Techik Rice Wheat Grain Optical Color Sorter, to meet different customers' sorting needs.Techik Rice Wheat Grain Optical Color Sorter has earned a great reputation for easy operation, high efficiency and simple maintenance.Get more news about Kolor Sorter Optyczny,you can vist our website!

The Smartsort A line of optical sorters is designed to sort a wide range of bulk materials by size, shape, color and texture. Smartsort's production capacity ranges from 50-kg to 42-ton per hour, depending on the product being sorted and the type of equipment. The combination of innovation and state-of-the-art components of the best quality, together with many years of experience in designing photoelectronic sorters allowed us to create a new model of color sorter, which is able to solve the most complex sorting tasks with maximum efficiency and efficiency. Full control at all stages of sorting ensures 100% of final product quality, and compliance with safety standards is confirmed by CE certificate.
Sensitivity

Quick response to color sorter control system commands, instant electric valve drive to eject high pressure airflow, blowing defective material into rejection basket
LIFE LONG

Military quality electromagnetic valve: effective protection technology reduces the tear of electromagnetic valve; long service life; low emergency rate; low energy consumption; and extended life of the whole mass

European Commission Officially Recognizes Sintered Stone

The European Commission and European Organization for Technical Assessment have adopted a new European Assessment Document (EAD) that defines a new product category known as sintered stone. The definition is as follows:Get more news about Sintered Stone,you can vist our website!

An industrial product consisting of a wet mix of minerals, without the use of resin or cement. The material is cold-formed by vacuum vibro-compression and then consolidated, after drying, by sintering at temperatures between 1,100 and 1,200°C. The production process is reversible. The material can be used in architecture and design for various interior and/or exterior applications and can be installed by means of adhesives, structural bonding or mechanical fixings.

lapitec sintered stoneThe material is produced in large slabs and boasts high levels of resistance against scratches, temperature changes, fire, salt water, humidity, UV rays, and more. Above all, it is environmentally sustainable, as it is produced without the use of petroleum derivatives. As specified in the EAD, the material is the result of a reversible process, enabling it to revert to its original state at the end of its lifespan and be reused. These properties make it a valuable material for construction and design, both on land and at sea, and it is compatible with numerous global certifications for quality and sustainability.

The EAD ‪090142-00-0404, which ‪will soon be cited in the Official Journal of the European Union, contains the list of essential characteristics and specifies the test methods necessary to verify the performance of this innovative surface. An important breakthrough that sheds light on ‪the different specificities of the sintered stone and ceramic products including ultra-compact and porcelain materials, in order to ‪avoid overlaps, confusion and misuse of terms. From now on, surfaces that meet the requirements of the new EAD can be CE marked and circulated even more easily within the European Community’s borders.

Mos Burger unveils new Rice Burger Katsu Curry

There are a lot of tasty things to eat in Japan, but when you want something filling, comforting, and delicious, it’s hard to beat digging in to a plate of curry rice topped with katsu (pork cutlet). Soon, though, Mos Burger is going to be offering that wonderful eating experience without the plate.Get more news about Rice Burger Forming,you can vist our website!
Joining the menu at the fast food chain later this month is the Yoru Mos Rice Burger Katsu Curry. Part of Mos’s rice burger series, which subs in two lightly toasted discs of white rice for the bun, the sandwich is a katsu curry meal that you can hold in your hand and eat without any utensils.

Instead of a hamburger patty, the core of the sandwich is a pork cutlet slathered with a curry sauce. Some home chefs in Japan insist that the best curry comes from mixing various versions together, so Mos’ sauce is made from a blend of four kinds of curry powder and three types of curry roux. They also add dashes of soy and demi-glace sauces for a flavorful result meant to excite the taste buds without punishing them with fiery heat.

Accompanying the cutlet are shredded cabbage on top of the katsu and lettuce underneath.

Katsu curry in sandwich form sounds like a can’t-miss concept, but there’s one unusual twist to be aware of. According to Mos’ announcement, the curry sauce is “served cold.” It’s not clear if that means that it’s chilled or simply serve at room temperature, but either way it seems as though it’ll at least be “cold” compared to curry ladled piping hot right out of the cooking pot.

PERSONALISED JEWELLERY BOXES

Discover the enchanting world of Personalised Jewellery Boxes! We understand the significance of secure and stylish storage. Delve into our captivating collection, where you'll find an array of exquisite boxes tailored to your unique taste and desires.Get more news about Personalised Wooden Jewelry Box,you can vist our website!

From timeless elegance to whimsical charm, we've curated a selection that caters to every style. Our dedication to delivering exceptional choices means we're always expanding our range. Plus, we guarantee that if you can purchase it, it's already resting on our shelves – no more frustrating backorders!

If, by chance, you can't locate your ideal Personalised Jewellery Box, please do share your treasured find with us. Your feedback helps us identify any gaps in our assortment, enabling us to continuously enhance your experience. Don't miss this opportunity to indulge yourself or surprise a loved one. Explore our collection of Personalised Jewellery Boxes today and make your jewellery storage as unique as the pieces within.
If you’ve been honing your jewellery collection for years – investing in new jewels, picking up vintage pieces and looking after grandmother’s heirlooms – it’s likely you’ve got rings, bracelets, necklaces and earrings that need a safe (and stylish) place to live.

Perhaps you lay them on a dressing table right now, or keep them in a trinket dish at the end of the day but this can easily result in that priceless diamond stud going missing or your delicate chain tangled beyond repair. Enter: the trusty jewellery box.

The last time you had a jewellery box, it may have contained a spinning ballerina with accompanying music but things have moved on. There are so many chic jewellery boxes that’ll house your collection and add to your interiors while at it.

When investing in a jewellery box, first consider how much jewellery you want to store. Do you need a little box for just a few precious pieces or are you after a design with multiple trays to keep a full collection in? What kind of pieces do you want to store? Perhaps you just wear rings and therefore a simple but beautiful ring box will suffice. Maybe you don multiple accessories daily and need a box with necklace, ring, watch, bracelet and earring compartments.

Whichever you decide, there are so many beautiful jewellery boxes to choose from right now in leather, suede, lacquer or wood. From Aspinal of London to Cartier and Anya Hindmarch, browse our pick of the best jewellery boxes to invest in now and love forever below: