history of my own time

Ngày tải lên: 15/03/2014, 15:20

Ngày tải lên: 16/03/2014, 03:20

Ngày tải lên: 18/04/2014, 15:22

Ngày tải lên: 11/06/2014, 13:58

Ngày tải lên: 18/06/2014, 17:20

Ngày tải lên: 21/06/2014, 19:20

... survey of the main lines of development of a very interesting area of biotechnology research. based on a limited number of characteristic publications. These have been selected on the basis of their ... antibacterial antibiotics, such as actinomycin C, streptomycin, oxytetracyclin, erythromycin, paromomycin, and turimycin, as well as for the antifungal antibiotics griseofulvin and nystatin and the nutritive ... development of mycelia. It allows careful observation , not only of the hyphae such as hyphal growth rate, rate of branching etc., but also – to some extent – of the development of micro- structures...

Ngày tải lên: 08/08/2012, 09:49

... actinomycetes, such as actinomycin D, neomycin and the best-known of these new “wonder drugs”,streptomycin.After its discovery in 1944, streptomycin’s use was extended to the chemotherapy of many ... in- ducer of chlamydospore formation [216]. Carbazomycinal and 6-methylcarbazomycinal, inhibitors of aerial mycelium formation, are produced by Streptoverticillium sp. [217]. 3.8.2 Germination of Spores The ... birth of the field of biochemical engineer- ing. Following on the heels of the antibiotic products was the development of efficient microbial processes for the manufacture of vitamins (riboflavin, cyanocobalamine,biotin),...

Ngày tải lên: 08/08/2012, 09:52

... n 1858 mt s nhà khoa hc (Jean Baptiste Dumas, Leopold Gmelin, Ernst Lenssen, Max von Pettenkofer, and J.P. Cooke ) tìm ra rng nhng mi quan h hóa hc vt ra ngoài qui tc tam t. Trong...

Ngày tải lên: 22/08/2012, 09:18

... Oxford Professor Carolyn Brown, Department of History, Rutgers University Professor Christopher Clapham, Centre of African Studies, Cambridge University Professor Michael Gomez, Department of History, ... Iliffe was Professor of African History at the University of Cambridge and is a Fellow of St. John’s College. He is the author of several books on Africa, including Amodern history of Tanganyika ... York University Professor David Robinson, Department of History, Michigan State University Professor Leonardo A. Villalon, Center for African Studies, University of Florida A list of books in this...

Ngày tải lên: 21/09/2012, 10:39

... amounts of daily alcohol consumption may also increase the risk of HCV-associated liver damage. Age at Time of Infection Several studies have shown a significant association between the rate of ... 10%-15% of HCV-infected persons will advance to cirrhosis within the first 20 years. Persons with cirrhosis are at increased risk of developing HCC. An understanding of the natural history of hepatitis ... exposure, and often reach levels of greater than 10 times the upper limits of normal. HCV RNA can be detected in the serum within 1 to 2 weeks after exposure.[16, 17] The level of HCV RNA rises...

Ngày tải lên: 02/11/2012, 09:56

... untested hypotheses of many well- known astronomers of to-day cannot be included among the records of the History of Astronomy. The writer regrets the necessity that thus arises of leaving without ... history of astronomy of limited size, to find a treatise on “practical” or on “theoretical astronomy,” nor a complete “descriptive astronomy,” and still less a book on “speculative astronomy.” ... 1/26000 of the whole, he was able to include the precession of the equinoxes in his explanation of the seasons. His explanation AUTHOR OF “THE TRANSIT OF VENUS,” RENDU’S “THEORY OF THE GLACIERS OF...

Ngày tải lên: 05/11/2012, 16:27

... Spirits in the shapes of ALEXANDER THE GREAT, of his Paramour and of HELEN. Chorus. The Tragical History of Dr. Faustus Dramatis Personae 3 The Tragical History of Doctor Faustus 4 ... Tragical History of Doctor Faustus Enter CHORUS. CHORUS. Not marching now in fields of Thrasymene, Where Mars did mate[1] the Carthaginians; Nor sporting in the dalliance of love, In courts of ... world of profit and delight, Of power, of honour, of omnipotence, Is promis'd to the studious artizan! All things that move between the quiet poles Shall be at my command: emperors and kings...

Ngày tải lên: 06/11/2012, 14:13

... be pulled from RAM after a delay of only a few billionths of a second, and from a hard disk after a delay of only a few thousandths of a second. This kind of speed is SOURCE: INTERNET COLLECTION: ... the army's artillery guns. The day that Mauchly and Eckert saw the first small piece of ENIAC work, the persons they ran to bring to their lab to show off their progress were some of these ... An Illustrated History of Computers Part 4 _______________________________ ____ John Kopplin © 2002 The title of forefather of today's all-electronic digital...

Ngày tải lên: 08/07/2013, 01:27

Ngày tải lên: 19/08/2013, 13:40

Ngày tải lên: 19/08/2013, 13:40