For a lot of reasons, home etching of PCBs is somewhat of a dying art. The main reason is the rise of quick-turn PCB fabrication services, of course; when you can send your Gerbers off and receive ...

Many metals with high reaction rates (eg, gold, nickel, and cobalt) were familiar causes of allergic patch-test reactions ... (zinc [allergic rate, 0.1%], ferric chloride [0.1%], and tin [0.3 ...

Allergies are an immune system reaction to substances called allergens. The cause a range of symptoms from a stuffy nose to itchy eyes to difficulty breathing. How long allergies last varies based on ...

The test seems to over-pathologize test-takers, finding higher rates of schizophrenia, depression, and narcissism than are typically found in the general population.

Raptors win their fourth game in a row.

Reaction formation may be a temporary coping mechanism, but it’s unproductive in the long run. It ignores underlying beliefs or challenges that need to be addressed, which can hurt mental health.

School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China ...

Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24061, United States ...

Sarah Vine and Andrew Pierce bring their own no-holds-barred opinions, insights and reaction (clue is in the title) to the biggest stories of the week. New episodes every Wednesday, wherever you ...

Reactions to a recent immunization (vaccine) Most are reactions at the shot site (such as pain, swelling, redness) General reactions (such as a fever or being fussy) may also occur ...

Your allergist will prick your skin with the extract of an allergen and then check for a reaction. A blood test can also be performed. It checks the amount of antibodies your immune system produces. A ...

A study involving 360 patients with oral complaints found that a substantial percentage had positive patch test reactions, with sodium tetrachloropalladate and nickel sulphate being the most ...