최근까지 지구상에서 적어도 12번 이상 분출한 활화산의 수는 5백50개에 달하는 것으로 알려져 있다. 여행객들이 폼페이 화산이나 폭발한 적이 있는 ... by throwing virgins into them, as may have happened in the old film "Bird of Paradise." I don't know for sure because my mother held her hand over my eyes.(c) 1993, Los Angeles Times ...
컴퓨터의 핵심부품이 집합된 회로기판을 우리는 메인보드(main board) 또는 마더보드(mother board, 항공모함과 유사한 어법이다)라고 한다.메인보드의 핵심은 물론 마이크로 프로세서(중앙처리장치 또는 CPU라고도 한다)다. 그런데 이 메인보드에는 오실레이터라는 것이 들어있다.오실레이터는 PC에서 ...
있는 CD 디스크드라이브, 섹터 디코더가 있는 CD 콘트롤유닛이 있고, 컴퓨터의 마더보더(mother board)에 해당하는 시스템보드가 내장돼 있다. 시스템보드 속에는 모토롤러 68000 계열의 마이크로프로세서, 램(RAM), CD-RTOS 소프트웨어를 담고있는 롬(ROM), 비휘발성 램, 비디오와 오디오 처리를 위한 VLSI ...
of laboratory animals, whose few babies were smaller than normal. A human baby's birth weight can be lowered when its mother is exposed to excessive noise. After birth, infants and children learn slower in noisy environments.Noise-battered adults can experience hearing loss, headaches, high blood pressure, increased heart disease, fatigue, dizziness, lowered immune functioning, cognitive ...
chimpanzees shows that individuals survive longer when they form close, long-term bonds with others. One chimpanzee mother lived into old age because her son cared for her. Unfortunately, when she died, he apparently died of grief. Close cousins to us, indeed.Human beings are social creatures par excellence. It's not possible to gaze out of a window onto the towers of Manhattan without ...
the predator-rich savannah), the baby has to be carried by the mother. If a baby cries less on the left, both baby and mother will be safer from predators.If right-handedness goes way back in our ancestry, keep in mind that according to the latest theory, the universe itself may be left-handed. From the skew of nuclear particles to the amino acids in living cells to the way galaxies rotate, ...
two weeks for the young to hatch out. The newborn duckbills have teeth and very short bills and feed on milk. The mother has no nipples, but milk oozes out of pore openings in the abdomen and the young lick at these and are nourished in this way. As they grow, their bills become larger and their teeth fall out.Yet despite everything zoologists learned about the duckbills there still remained ...
때문에 바둑의 흰돌(百石)을 만드는데도 쓴다. 바다의 우유, 굴굴은 진주의 모패(mother of pearl)로 이용한다. 인공진주가 금속에서 생성되는 메커니즘은 생략하기로 한다. 우리나라에 자생하는 토굴무리(Ostrea)나 굴무리(Crassostrea)는 진주모패로 적합치 못해 수입종을 쓰고 있다. 서양 사람들은 굴이 ...
PC호환기종들은 IBM에서 옵션품목으로 판매하고 있는 각종 애드온카드들을 마더보드(mother board)에 내장하고 있기 때문에 몇가지 공통적인 문제점을 발생시키고 있다.첫째 업체별로 마더보드의 크기가 모두 다르며, 시리얼(serial) 패러렐포트(parallel port)의 위치가 다르게 설계되어 있어서 중간재인 ...
whales are not actually mammals? No, that is not possible. They give birth to living young that develop inside their mothers by means of a placenta and that suckle on mother's milk after they are born. Whales have diaphragms and in embryonic form they even show signs of having hair. They have all the characteristics of mammals, so it stands to reason that their ancestors must once have lived ...