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  2. Quench polish quench - Wikipedia

    en.wikipedia.org/wiki/Quench_polish_quench

    The process starts with a standard salt bath nitrocarburizing cycle, which produces a layer of ε iron nitride. [4] Next, the workpiece is mechanically polished; typical polishing processes include vibratory finishing, lapping, and centerless grinding. Finally, the workpiece is re-immersed into the salt quench bath for 20 to 30 minutes, rinsed ...

  3. Nitrite test - Wikipedia

    en.wikipedia.org/wiki/Nitrite_test

    A nitrite test is a standard component of a urinary test strip. A positive test for nitrites in the urine is called nitrituria. This test is commonly used in diagnosing urinary tract infections (UTIs). A positive nitrite test indicates that the cause of the UTI is a Gram-negative organism, most commonly Escherichia coli. The reason for nitrites ...

  4. List of medical triads, tetrads, and pentads - Wikipedia

    en.wikipedia.org/wiki/List_of_medical_triads...

    A medical triad is a group of three signs or symptoms, the result of injury to three organs, which characterise a specific medical condition. The appearance of all three signs conjoined together in another patient, points to that the patient has the same medical condition, or diagnosis.

  5. List of medical abbreviations: S - Wikipedia

    en.wikipedia.org/wiki/List_of_medical...

    symptoms surgery (though deemed by some as inappropriate) S 1: first heart sound: S 2: second heart sound: S 3: third heart sound S 4: fourth heart sound S&O: salpingo-oophorectomy Sb: Scholar batch SAAG: serum–ascites albumin gradient SAB: staphylococcal bacteremia spontaneous abortion (that is, miscarriage) SAD: seasonal affective disorder ...

  6. Nitriding - Wikipedia

    en.wikipedia.org/wiki/Nitriding

    For instance, at moderate temperatures (like 420 °C), stainless steels can be nitrided without the formation of chromium nitride precipitates and hence maintaining their corrosion resistance properties. [5] In the plasma nitriding processes, nitrogen gas (N 2) is usually the nitrogen carrying gas. Other gasses like hydrogen or argon are also ...

  7. Why norovirus is so hard to kill: Here's how to protect ... - AOL

    www.aol.com/why-norovirus-hard-kill-heres...

    There’s currently no approved vaccine for norovirus, although Moderna has begun a phase three trial in the U.S. for a vaccine using mRNA technology and aims to test it in 25,000 adults worldwide.

  8. What is ‘toasted skin syndrome'? Heating pads and blankets ...

    www.aol.com/toasted-skin-syndrome-heating-pads...

    Manhattan-based dermatologist Dr. Brendan Camp, M.D., said that toasted skin syndrome, officially known as erythema ab igne (EAI), is a "pattern of discoloration that occurs in areas of skin after ...

  9. Is It Safe to Use Expired Vitamins? The Truth About Vitamin ...

    www.aol.com/vitamins-expire-nutritionists-weigh...

    When you buy a bottle of vitamins from a nutrition store, you’ll probably notice a best-by date on the bottom of the jar. But that inscribed number isn’t a hard-and-fast rule—there is some ...