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This complete guide will tell you everything you need to know about centrifugal fans. You might be wondering ‘What is a centrifugal fan? What are centrifugal fans used for? What are the different types of fans?

We will answer these questions and more. We’ll also highlight several useful videos from HVAC experts who break down these con…[Læs mere]

Is your electric or gas meter box looking a little worse for wear? Or perhaps you would like the look of your meter box to better fit with your house exterior or cladding? Whether you have a gas meter box, an electric meter box or even a water meter box door that you would like to spruce up, painting your meter box could be the solution for you.…[Læs mere]

Did you know that there are a lot of wine additives used to make wine?

Most wine additives are safe, however, there have been a few notoriously famous cases of unsafe wine additives in the past. Let’s get into the nitty gritty truth about wine additives and dispel some common wine additive myths.

Worst Case Scenario: A Wine S…[Læs mere]

Booms are a commonly used piece of sound equipment that allow you to position the mic close to your subject while staying just out of shot. Though a number of factors may influence the limitations on mic placement potential (for example, the chosen camera frame and the overall design of the set), the overall preferred method is to boom from above,…[Læs mere]

A buffer is a solution that can resist pH change upon the addition of an acidic or basic components. It is able to neutralize small amounts of added acid or base, thus maintaining the pH of the solution relatively stable. This is important for processes and/or reactions which require specific and stable pH ranges. Buffer solutions have a…[Læs mere]

Even if cars soon start running entirely on electricity or hydrogen, they'll still need 100 gallons or more of oil to make their plastic parts, such as seats, dashboards, bumpers, and engine components. And some day that plastic may be recycled back into fuel.

Cars of old were mostly steel, but the use of lightweight alternatives has…[Læs mere]

It turns out that most race cars use sequential gearboxes as well. A sequential gearbox gives the driver several important advantages that are very useful in a race car. We will discuss these advantages later in this article.

In this article, you will learn how a sequential manual transmission works and why this type of transmission is now…[Læs mere]

The short answer – it depends on your situation. It’s all going to boil down to which features you want, what your current pool set up is, how much you are willing to spend now and in the future, and how much of an effort you want to put in to using the cleaner. There are 3 main types of automatic pool cleaners: Pressure Pool Cleaner, Suction Sid…[Læs mere]

Nanofiltration (NF) is a de novo class of membrane filtrations with unique properties ranging from ultrafiltration to reverse osmosis. Thanks to their high removal performance, NF membranes have gained increasing attention from both academia and industry for various applications, especially in water and wastewater treatment and desalination.…[Læs mere]

PACOM Unison is a market-leading platform with the ability to link with ASSA Abloy Traka intelligent key management system and lockers solutions to manage and control access to a company’s most important assets. When a conventional key is stolen, mislaid, or accidentally taken home, security is compromised and the organization is suddenly v…[Læs mere]

Sport is an important part of many people’s lives—as both recreation and entertainment. It is also a sizeable industry with political and economic ramifications in today’s world. Within the last half-century or so, sports wear has become a driving force for new trends in fashion and for textile innovation. This special issue of Fashion Pract…[Læs mere]

Xylitol is a non-sugar sweetener extracted from the birch tree. It is a five-carbon polyol that has effectively demonstrated itself to be cariogenic, by its action of neutralizing plaque acidity on teeth and repairing tooth enamel. Hence, it is also called the “magic bullet.”

The major production of xylitol goes to the pharmaceutical and…[Læs mere]

While synthetic leather were once considered not suitable for high quality shoes,  PU microfiber leather has

changed how shoes are made.

Cast iron pipes can fail in many modes which in general can be summarized into two categories: loss of strength due to

the reduction of wall thickness of the pipes, and loss of toughness due to the stress concentration at the tips of cracks or

defects. Even in one category there can be many mechanisms that cause failure. The strength failure…[Læs mere]

When I was younger, wine came in a glass bottle, and—outside of a few value-priced boxed options—that was that. But

now, quality wine comes in all sorts of packaging: boxes, cans, pouches, even slim wine bottles that can fit through a mail slot. Of course, the bottle is

still king—but even that classic container isn’t beyond innovat…[Læs mere]

Stainless steel has unique properties which can be taken advantage of in a wide variety of applications in the

construction industry. This paper reviews how research activities over the last 20 years have impacted the use of stainless

steel in construction. Significant technological advances in materials processing have led to the development…[Læs mere]

analogue card punch time recorder

Who knows when the first person decided to put something over their head to keep it warm, but knitters know that knitted hats for women are some of the

most fun and easy things to knit.

Calcareous materials, like marble used in

connection with cultural heritage objects such as statues and pedestals, or as wall facings on buildings, often show a

brownish staining owing to contact with iron metal or iron-containing minerals in the stone. The discolouration alters the

appearance of the stone, which is undesirable from an…[Læs mere]