|
Author Question: What is the decimal equivalent of the 2's complement signed number 11011001? A) 29 B) 25 C) -18 ... (Read 34 times) |
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.
The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.