How to use a stethoscope.

A stethoscope is a medical tool which is used for listening of the sounds made by heart, lungs and a stomach. Use of a stethoscope for listening of sounds is called an auscultation.  Professional medics are trained in the address with a stethoscope. However, you can learn to use him too. Read a further article and you will learn how to use a stethoscope.

The first thing that you should do it to buy it. The high quality of a stethoscope is important. The higher quality of your stethoscope, then the easier to hear the body of your patient.

The unilateral stethoscope is better than bilateral. Channels in a bilateral stethoscope can rub each other. This noise can complicate listening of sounds of the heart. Thick, short and rather tough channel – the best option if you do not plan to carry a stethoscope around a neck. In this case, the long channel is more preferable. Remember, the length of the channel is not specifically related to the quality of the sound. It only matters for the usability.

Make sure that in the channel have no holes and percussion on a diaphragm (a flat part of a head of a stethoscope). As the device for percussion use earphones for listening of sounds. If you hear nothing – look for the holes.

The second thing that you shall do is checking ear tips of your stethoscope. It is important to be convinced that ear tips looked in the frontal direction from you and that they well approached. Otherwise, you can hear nothing through your stethoscope.

The third stage. Check a tension of ear tips of your stethoscope. In other words, be convinced that ear tips settle down close to your head, but it is not too close. If your ear tips too hard or too dangle, customize them.

Fourth. Choose a suitable head for your stethoscope. There are many various types of heads for stethoscopes. Choose the one that corresponds to your requirements. Heads of stethoscopes happen various sizes for adults and children.

Preparation for usage of the stethoscope.

Choose the quiet place for use of a stethoscope. Use your stethoscope in the quiet place. Find the quiet place to be convinced that body sounds which you intend to hear would not be muffled by background sounds.

Correctly arrange the patient. To hear the heart and the stomach, it is required to you that your patient was in a lying pose. To hear the lungs, it is required to you that your patient sat. In other words, ask your patient to lie down. Sounds of heart, lung, and intestines differ depending on the patient’s position: sedentary, standing, lying on any side and so on.


How to paint a bicycle frame?

To begin with, the drawing the frame needs to be exempted from all details that are not subject to coloring and then it is good to wash. If it is important to leave certain drawings or logos, it is desirable to stick them precisely on a contour with an adhesive tape, having protected thereby from paint penetration.

After that cleaning of a frame follows. It is required to level a surface and to make her opaque for the best coupling of materials. It is necessary to smooth out, using a rough abrasive cloth with water. At the same time, it is enough to bring down luster on an old covering. Moreover, if it is decided to get rid completely of an initial paint layer, it is possible to process a surface special structure – a washing of old paint.

However, peeling the paint, it is necessary to consider that there is one more layer – couch. It is extremely undesirable to delete him to metal. The matter is that at the plant the frame is grounded in a heated state – it promotes good adhesion and sticking of a couch.

Also at this stage, it is possible to eliminate dents, impressive scratches, and other serious defects if they exist. It is carried out by means of cold welding. At last, degreasing of a surface by the corresponding structure will become the last preparatory action. It is made for removal of unnecessary microparticles.

And now let us talk a little more detailed about a use of the couch. Even at preservation of a factory layer primer at least by places will be required to be produced if, of course, the purpose is to paint a bicycle frame qualitatively. Couch will help to correct defects on an alignment of a surface and will protect it from corrosion. And, above all, by means of it, the colorful covering will be fixed much more reliably.

It is more convenient to work with the suspended frame. It is necessary to fix a detail so that it was possible to approach it from any party. It is necessary to take care also of good ventilation of the room. Besides, during the work with the chemical compositions, it is strongly recommended to use a respirator.

The couch should be applied with a paint sprayer. It is necessary to apply on the processed surface two thin priming coats with a twenty-minute interval between the first and second drawing. For the avoidance of smudges, it is necessary to hold a paint sprayer at sufficient distance. In case of paint sprayer absence, it is necessary to buy one. The choosing the right of one, which is a fascinating question, by the way, is very important. Try to read as much as possible on the product-oriented websites.

Upon the end of the procedure, the frame needs to be dried. For reliability, it is necessary to take away for this purpose days, and more exact information can be found in the instruction to priming structure.

After the carried-out work, it is possible to start the main thing – coloring. What structure for this purpose to use? One of the options is a touch-up paint. Here you are able to choose any color that is pleasant to you. And for the special effect, it is recommended to make the first layer white.

The process of painting consists of the next steps.

First, it is better to spend less paint (but not to the detriment of the expected result), and it is no more as surplus can turn into negligent smudges.

Secondly, the surface should be degreased at first and only then to paint. And in the third, the put layers have to be accurate and thin for what it is necessary to work actively with a barrel, without going in cycles in one place. It is possible to be limited to two layers, but it isn’t less. Each of them has to dry out well.

If smudges, after all, were found, it isn’t necessary to try to trample down them hands. In this case, it is worth changing the provision of a frame: so the excess paint will evenly be distributed on a surface. It is necessary to leave the painted detail for days two to dry that it appeared the processing which is completely prepared for the final stage


How To Select A Personal Computer

A personal computer is a basic need for many people due to the advent of technology and the new focus on eCommerce. It is hard to recommend the best brand to an individual because people have different needs and preferences. Some need simple machines because they perform light tasks while others run robust applications which need high-end machines. Follow this checklist when selecting a new computer.

Screen Quality

If you spend considerable time on your laptop, then you need a good screen that will not harm your eyesight. Modern laptops come with touchscreen displays which are somehow glossy. Such machines produce reflections which are not good for your eyes. The resolution is another important factor as it ensures you view things clearly. A full High Definition screen will be 1920*1080-pixels.


Whether you want to acquire a desktop or a laptop, the size is an important consideration. 12.5 to 13.3 inches is the most recommendable screen size for a portable laptop. Ultrabooks are usually slim and light which makes them a favourite to many people. The desirable weight should be between 1 to 1.5 kg for a laptop.


You have to consider the performance of the desired machine according to your needs. Anything above Core i3 is a good fit for the modern world. Core i5 processors can handle multiple tasks such as games and are suitable for programming. Core i7 are the best performers and most fit for multitasking. Check the type of fans because some machines can overheat if you use them for long.

Keyboard Quality

You have to ensure that the computer comes with a comfortable keyboard for long typing sessions. The ideal keyboard should have full-sized keys with some space in between the arrows.  A comfortable layout accompanied by keys with a high snappy responsiveness is desirable. A backlit keyboard allows you to type even when working in dimly lit areas.

Operating System

The most popular computers’ operating systems are Windows, Linux, and Macintosh. You have to ensure that you can easily get updates of your desired OS. You should learn how your preferred platform works and its compatibility with other devices. You can view some of the latest Windows keys here and make your preferred choice.

Selecting a personal computer is an easy task if you know the preferred features. You need to set a budget and then shop around to get the best deal.