Gas tungsten arc welding (GTAW), also known as tungsten inert gas (TIG) welding, is an arc welding process that uses a non-consumable tungsten electrode to produce the weld.he use of any shielding gas containing an oxygen compound, such as carbon dioxide, quickly contaminates the tungsten electrode, making it unsuitable for the TIG process. In 1953, a new process based on GTAW was developed, called plasma arc welding.
Another cause of ridges on fingernails is lack of moisture. If your nails are ridged or cracked, massaging the nails or cuticles with a moisturizing cream or oil can be very beneficial, as can increasing the amount of water you drink.
nail (transverse ridges) FREE subscriptions for doctors and students... click here You have 3 open access pages. Beau's lines are transverse ridges in the nail plate that form as a result of temporary interference of cell division in the proximal nail matrix (1). It may be caused by. trauma; chemotherapeutic agents; systemic illnesses such as myocarditis, peripheral vascular disease, uncontrolled diabetes ; febrile illnesses â scarlet fever, pneumonia (2).