Underwater Video Camera

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Underwater video cameras are electronic devices used underwater to capture and record the marine environment. They function similar to standard video cameras and camcorders; only, they are designed with several special features that allow operation underwater such as depth focus, audible moisture alarm, optics and rear plate, and amphibious microphone.

Underwater video cameras are useful equipment for underwater exploration, checking out of diving sites, search and rescue operations, fish finding, boat hull inspection, and underwater security purposes. Moreover, this type of video camera can be part of your drain cleaning equipment when inspecting drainage pipe and tanks.

Types of Underwater Video Cameras

Handheld underwater video cameras—These are designed to be operated using the hands of the user. They generally feature a sleek and lightweight design that resembles a camcorder. Most models feature an advanced grip control system that allows fingertip access to various controls for easy recording, focusing, and lighting. Other features include two speed zoom, ND filter, shutter speed, white balance, and audio level. Most models make use of waterproof lens that allow zoom up to 10 times closer. Advanced models come with LED indicator, optics and rear plate, audible moisture alarm, and amphibious microphone.

Towable underwater video cameras – These are small cameras designed to be towed by a vessel while recording underwater events. They may use of colored or black and white tiny CCD camera chips, transmitting video image using a thin coaxial cable to a screen. Most models feature a surface console and a battery that allows operation without power supply. They are best used to check out diving spots, inspect other colleagues working in the water, and simply explore the water without actually going down there. Other more serious applications include observations of marine fauna and flora for scientific purpose, ship hull investigations, and rescue operations. They are generally small and lightweight, requiring very little maintenance.

Remote operated vehicles (ROV) – These are underwater video cameras powered by motors to allow operation from any vessel even under strong currents. They are generally light and reliable. They are usually designed with halogen spotlights that provide excellent illumination during image recording even at night or dark depths.               Most models feature a high resolution color that offer excellent video quality. Some models are constructed to allow perfect maneuverability, providing close-up shots of the marine environment.

Underwater video cameras are an essential part of drain cleaning equipment.

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Uncommon Kitchen Appliances that Are Essential

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Kitchen remodeling is a good opportunity to re-evaluate the furnishings and appliances you have and should have in your kitchen. While you most likely already have the common kitchen appliances,such as the refrigerator, oven, stove, and dish washer, there are unusual appliances which are just as essential during kitchen activities.

When you are remodeling your kitchen, you may want to consider adding these appliances to your kitchen essentials.

Deep Fryer

Deep fryers, also known as deep fat fryers and flash fryers, are kitchen appliances designed to completely and deeply fry food under heated or boiling cooking oils. Food cooked using these devices are also called deep fat fried food. They are designed both for home and commercial use, where home models are usually more compact and feature smaller oil chambers than commercial units.

Convection Oven

Convection ovens are kitchen appliances that make use of heated air in processing a wide variety of food products for baking, drying, preserving, curing, and other types of cooking. They offer consistent and even distribution of heat throughout the device. Other advantages brought by convection ovens include providing mass and heat transfer, offering accurate temperature control, uniform heating for products of any size and shape, and contactless heating.

Espresso Machine

Espresso machines are kitchen appliances designed to produce espresso, a traditional Italian coffee beverage. They are designed to brew coffee by removing the oils and blending them in the ground coffee, creating a creamy and syrupy espresso. Typically, it takes 20 seconds to one minute in preparing and producing a perfect shot of espresso.

Dehumidifier

Dehumidifiers are devices designed to lower the moisture content of air, thus reducing the humidity in a certain place. They work by cooling the air until it cannot hold any moisture anymore to generate air than is not as humid and as dry as it was before the dehumidification process.

These are just some of the uncommon but useful appliances you may want to include in your kitchen. 

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Common Failures of Magnetic Sight Glasses

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Improper installation of magnetic sight glass can lead to device failure. This includes over tightening and uneven torqueing which can produce bending loads on the glass which can potentially result to cracking. Another cause of failure is trapped debris that causes a bending moment, such as from gaskets that become baked onto the flanges and portions are left behind when removed.

Some low-quality devices may not have flat and parallel surfaces which is often a product of poor or low tolerance manufacturing. This also may result in a bending load on the glass.

It is not uncommon for a sight glass to be used as a handy place to rest a wrench or other tool. This may scratch the glass, creating a source for breaks to originate, also known as stress concentrations. Even though a bending load is required to open these cracks, they significantly reduce the pressure capabilities of the glass.

Thermal shock is a sudden, drastic change in temperature that causes one side of the glass to expand or contract differently from the other side. This can occur when a cold sight glass experiences a sudden increase in temperature at process startup, or when a hot sight glass is suddenly cooled during an external wash down of equipment.

Of course, over-pressurization can cause a sight flow indicator to fail. A properly specified unit should have an ample safety margin.

Lastly, degradation of the glass over time can lead to failure. Chemicals, and even water, will corrode glass. There are several chemical resistance charts that illustrate the loss of weight of glass when exposed to various chemicals. Another source of degradation is the continuous friction from an abrasive product against the glass.

A magnetic sight glass is an important device that provides a clear view during liquid level indicating. However, when not used properly and maintained well, it can lead to minor and major failures.

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Older Adult Depression

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One of the most common psychological conditions closely related to suicides in older adults is depression. It is also one of the most unrecognized and least considered of the medical illnesses. It is one of the leading causes of the deaths of older adults in the United States, which further illustrates to us the undeniable need to reorient the treatment of the medical science on the issues and facets of older adult depression.  

Depression from substance abuse, financial problems, or serious medical conditions deprives anyone of sober living. Thus, it is important to battle depression on older adults before it’s too late.

Degrees of Depression

There are varying degrees of depression; some of them are very easy to detect and are, therefore, not as dangerous and alarming as the others. These easy to detect types are easier to combat since they are very apparent to others, even to unspecialized individuals, who could easily address the problem by its very roots through immediate communication.

Unfortunately, there are the types which are very hard to detect and are so unapparent as to even signal normality. These types will not pose doubts or warnings to others as to the real mental and emotional situation of the person thereby leading to further escalation and more often than not, to suicidal attempts if not successful ones. One of these types is bsyndromal depression which is known for its characteristic ability to increase the risk of major depression since it lies in the almost subconscious and slowly creeps in but is most silent in its manifestations.

Symptoms of Depression

Usually however, depressive symptoms are not normal parts of aging. Instead the only feelings that are normally present are those intermittent mood states, or those of sadness, grief or loss which are mostly tentative in their duration. But when depressive symptoms are present, emotions quite similar to these are long lasting in their effects; they are much more prolonged and protracted. The latter ones, are harder to combat they being more persistent and greatly interfere with the individual’s ability to function in general.

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