Whether a given star is circumpolar at the observer's latitude (Î¸) may be calculated in terms of the star's declination (Î´). The star is circumpolar if Î¸+Î´ is greater than +90Â° (observer in northern hemisphere), or Î¸+Î´ is less than â90Â° (observer in southern hemisphere).
Countervailing duties. Countervailing duties (CVDs), also known as anti-subsidy duties, are trade import duties imposed under World Trade Organization (WTO) rules to neutralize the negative effects of subsidies. They are imposed after an investigation finds that a foreign country subsidizes its exports, injuring domestic producers in the importing country.
Pilot Duty Ratings. A Relay can be assigned a Pilot Duty Rating when it is used for switching loads on another relay, or solenoid valve coils. It can be a direct current (DC) rating, or an alternating current (AC) rating, as shown in the table at the bottom of this post. The Pilot Duty Ratings are obtained after performing product qualification tests.