منابع مشابه
Building an Internet Archive System for the British Broadcasting Corporation
Since its beginnings as the British Broadcasting Corporation (BBC) Networking Club in April 1994, the BBC’s Web site has grown to over two million pages. While bbc.co.uk inarguably offers a valuable source of information, entertainment, and education for its users and provides an online arena for peer-to-peer communication, it also brings into focus the challenge of digital preservation. Apart ...
متن کاملTHE RISE AND DECLINE OF THE BRITISH DYESTUFFS INDUSTRY: An Object Lesson for American Industry
The aphorism that those who do not remember the past are condemned to live it again is an often quoted warning from the writings of George Santayana. This paper will attempt to illustrate this adage with two examples, one having historical and the other having contemporary significance. We will examine the rise and very rapid decline of the British synthetic dyestuffs industry as the historical...
متن کاملCc . the Action of Dyestuffs on Enzymes
The method of investigation consisted in submitting a preparation of urease to the action of a dyestuff at PHI 7-4 and at 450 for a given time, usually 30 mins. or 1 hour, and in then determining the activity of the enzyme by estimating the amount of ammonia produced at 450 in a given time from a 0 3 % solution of urea. 1 cc. of the enzyme preparation was added to 2 cc. M/15 phosphate buffer so...
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ژورنال
عنوان ژورنال: Nature
سال: 1924
ISSN: 0028-0836,1476-4687
DOI: 10.1038/114592a0