Activity

Comparison of Bond Strength of Metal and Ceramic Brackets

Appropriate bond strength between bracket and tooth surface is one of the most important aspects of orthodontic treatments [1,2]. Bonding of MIM monoblock metal bracket to enamel started in the mid 1960s [3,4]. Only auto-polymerizing materials were available at the…[Leggi tutto]

Efficiency of Air Purifiers

Infectious diseases caused by airborne bacteria and viruses are a major problem for both social and economic reasons. The significance of this phenomenon is particularly noticeable during the time of the coronavirus pandemic. One of the consequences is the increased interest in the air…[Leggi tutto]

Useful Refrigerator Parts and Accessories

Go to the grocery store. Pay the bills. Make dinner. Pack lunch. As you busily go about your day and check things off your to-do list, you probably give little thought to your . But maybe you should. With advancements in technology, there are parts and refrigerator accessories…[Leggi tutto]

How Perfume Bottle Designs Affect Your Perception

Imagine being asked to capture a landscape with so much color, texture, and detail that the picture springs to life on canvas, transporting even the most casual observer to that exact location and moment in time. The only catch (and it’s a big one) is that you can’t…[Leggi tutto]

Engineering Essentials: Types of Hydraulic Hose

To say that hose is an important part of a hydraulic system is a huge understatement. The flexibility of hose enables components to be positioned in the most efficient or convenient places, because the hose has the ability to bend around corners, through tight spaces, or…[Leggi tutto]

How Do Air Compressors Work?

Air compressors are an invaluable tool for both industrial work and DIY at home, and there are several different types to choose from depending on the job you need doing. Air compressors have a number of uses, such as to fill gas cylinders for industrial purposes and scuba diving, to…[Leggi tutto]

A Crushing Equipment is a machine that uses mechanical energy to break blocks of stone, concrete, or other building materials into smaller blocks of a specific grain size. They are particularly used in the mining industry to reduce the size of ore blocks and facilitate their processing. Crushers are designed to receive…[Leggi tutto]

What is PCB?

Printed circuit boards (PCBs) are the boards that are used as the base in most electronics – both as a physical support piece and as the wiring area for the surface-mounted and socketed components. PCBs are most commonly made out of fiberglass, composite epoxy, or another composite material.

Most PCBs for s…[Leggi tutto]

A Capacitive Touch Screen is a display device that allows the user to interact with a computer using their finger or stylus. They’re a useful alternative to a mouse or keyboard for navigating a GUI (graphical user interface). Touch screens are used on a variety of devices, such as computer and laptop displays,…[Leggi tutto]

A gripper is a motion device that mimics the movements of people, in the case of the gripper, it is the fingers. A gripper is a device that holds an object so it can be manipulated. It has the ability to hold and release an object while some action is being performed. The fingers are not part of the gripper, they are…[Leggi tutto]

Tube Mill Machine Lines produce pipe and tube by taking a continuous strip of material and continuously roll forms it until the edges of the strip meet together at a weld station. At this point, the welding process melts and fuses the edges of the tube together and the material exits the weld station as welded tube.…[Leggi tutto]

Effect of a herbal extract powder

In the manufacture of herbal medicinal tablets, dried plant extracts are employed as the therapeutic ingredient. These powders, usually obtained by spray drying, are typically hygroscopic and possess poor flow and compactability for the manufacture of tablets by direct compression (DC).…[Leggi tutto]

Nuts, bolts, screws, and washers

This chapter starts with tips on drawing hexagon nuts and hex bolts and comprehensively covers, using illustrations, tables of size and explanations on usage, the majority of metric fixings and fasteners used in engineering today i.e. screws of the Hexagon Socket type such as Cap Head…[Leggi tutto]

Intraoperative Invasive Blood Pressure Monitoring and the Potential Pitfalls

Invasive intraarterial blood pressure measurement is currently the gold standard for intraoperative hemodynamic monitoring but accurate systolic blood pressure (SBP) measurement is difficult in everyday clinical practice, mostly because of…[Leggi tutto]