Learning: Respiratory and other emergency skills and specific methods of operation

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If someone around you suddenly falls ill, what would you do? ? ? Do you panic? ? No, if you have some necessary first-aid skills, you can play a big role and even save lives. The following three daily emergency techniques should be well-studied in case of need.

01/ Respiratory

Artificial respiration is usually a mouth-to-mouth method, using the gas you exhale to blow into the lungs of the injured person to ensure that it maintains its minimum oxygen supply for life. When artificial respiration is performed, one hand presses on the forehead of the injured person and causes the head to retreat. The index finger and middle finger of the other hand are placed on the lower jaw, raising the lower jaw and keeping the airway open. The emergency responder then squeezed the patient's bilateral nostrils with the hand that pressed the forehead. Then, use the lips to wrap the wounded person's lips and blow the air in smoothly while keeping the airway unblocked. But be careful not to leak air. If the air blowing is effective, the chest will bulge, and Declined with the exhalation of gas. After the air blows, the first-aid person's lips leave and loosen his fingers to let the gas exhale, while turning his head to breathe fresh air, and then a second blow. Each blowing time less than 1 second for an adult, children 1 to 1 second half, the frequency of each minute is 8--12 times.

02/ External heart compression

When the person's heart stops beating, the body's blood circulation is terminated, and the chest cardiac press is to push blood circulation by external forces. The position of the compression is between the upper part of the sternum and the two breasts. The two palm roots overlap in this area and the fingers are straight or interlocking. When pressed, the upper body forward, arms straight above the patient's sternum facing shoulders vertically press down firmly 4--5 cm, then relax, but do not leave the hands chest, 100 times per minute, to a uniform rhythm.

Need to be particularly reminded that artificial respiration and chest compressions alternately, press 30 times, blowing 2 times for a cycle, this process is also known as "cardiopulmonary resuscitation."

03/ Hemostasis

When the blood loss of the human body exceeds 40% of the body's blood volume , life is threatened. The most common method for traumatic hemostasis is compression and hemostasis. Head, limbs, and wounds throughout the body can be used. The specific method is to have the patient sit or lie down, raise the injured area, sterile gauze to cover the wound, and then press directly by hand in the above, the pressure 5--10 minutes, after which, with a bandage or a bandage wrap live Wounds to help stop the bleeding. If there is a feeling of swelling and numbness at the wound, it means improper dressing. When the body bleeds, if the blood is bright red, it indicates that the arterial bleeding, while processing, at the same time, you can press the top of the bleeding port, can effectively stop the bleeding, but this method should not exceed 10 minutes per press , otherwise it will affect the entire Limb blood supply.

The information in this article comes from the Internet and was reorganized and edited by China Rescue Equipment Network.

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Duplex Stainless Steels, also referred to as austenitic-ferritic stainless steels, are a family of grades with about equal proportions of ferrite and austenite. These steels have a duplex microstructure which contributes to their high strength and high resistance to stress corrosion cracking. Due to their high content of chromium, nitrogen and molybdenum, duplex steels offer good resistance to local and uniform corrosion. Duplex stainless steels have good weldability.


Today, modern duplex stainless steels can be divided into three groups:
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Of the duplex grades, duplex 2205 is the most widely used. However, the super duplex steels like Zeron® 100 and LDX2507 are excellent for servicing severe corrosive environments, such as offshore and marine applications. Lean duplex 2101 is available as an economic alternative to 300 series stainless steels.


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Very good resistance to uniform corrosion
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