in amber is itself an amazing process. Tiny bits of DNA are "amplified" by PCR, the "polymerase chain reaction" technique: in an enzyme solution, the DNA copies itself. The technique, and the study of the DNA, relies heavily on computers (as everything seems to, these days).This month, much older DNA has been extracted from Lebanese amber by Cano, George and Hendrik Poinar, plus Norman J. ...
sensor gloves and robot arms, surgeons will be able to operate from outside the operating room. VR remote control technique will make it possible for specialists scattered around the world to provide medical and surgical help to anyone anywhere. It will also make it possible for astronauts or lunar colonists to get this kind of help.Virtual Reality - with or without remote control — has wide ...
way ellipticals were probably formed-from the collision of two spiral galaxies-a violent dance!Astronomers now have a technique for estimating the central mass of galsxies by measuring the gravity they generate. The velocity of revolving stars is determined by watching changes is the wavelength of their light. Astronomers John Kormendy and Douglas O. Richstone studied galaxy NGC 3115, 30 ...
graphite enclosed in inert gas. This technique proved to be a way of producing large quantities of fullerene. Other techniques have been found, so the molecule of the year is doing great this year, too. Fullerene research is going on all over the place, with scientists discovering more and more about the new molecule and starting a whole chemical family of fullerenes.For instance, buckyballs ...
and various industrial applications. A structure's modal shapes are changed to diminish the radiated sound. If the technique proves as effective as it seems to be so far, it will save everyone money and reduce noise pollution."Noise" is, again, how you defne it. A tourist in Africa may think elephants are noisy. They trumpet, shriek and have stomachs that constantly rumble. Unknown to the ...
일어났다.하니웰이 속한 위원회에서는 자신들이 은밀히 만들어온 FACT(Fully Automatic Compiling Technique)라는 언어로 코볼을 대치해야 한다고 우겼다. 거의 완성된 FACT의 위력은 대단했다. 불안을 느낀 나머지 회사들이 단결해 FACT를 몰아 냈다. 담합의 결과 1960년 1월에 열린 전체집행위원회에서 FACT안이 ...
to those of the human being than they were to the gorilla.This was not accepted easily. This sort of gene sequence technique was tricky and it might easily have gone awry. Indeed, Jonathan Marks, of Yale, strongly objected to Sibley's results and even went so far as to imply that Sibley had falsified his data.But then it became possible to identify strings of genes and show what their ...
연대를 밝히기 위해서 원소들의 반감기(半減期)를 응용하는 칼륨-아르곤 방법(potassiumargon technique)이나 방사선 탄소방법(radiocarbon dating)이 쓰이고 있다. 아르곤의 반감기는 13억년으로 암석과 같은 긴 연대의 측정이 필요할때 사용하고, 탄소 동위원소 ${}^{14}$C는 생물체의 연대 측정에 쓰인다. ${}^{14} ...
the total amount in the ocean but how thinly spread out it is, and it is very thinly spread out. No technique (and no technique likely to be developed anytime soon) can pick out that thinly spread-out gold cheaply enough. To pick out a dollar's worth of gold would cost a thousand dollars or more of effort, as Fritz Haber found out 60 years ago. So the gold will ways to solve the nation's and ...
Laboratory have made this work only on small-scale, but there's no reason it can't be made into a large-scale technique eventually.The United States Gold Corporation in Colorado has also been using varieties of Thiobacillus ferroxidans to grow on ores containing tiny quantities of gold. In this way, the gold content can be made more available.It may be possible to develop strains of bacteria ...