John g torrey (14 Ergebnisse)

Zustand: Gut. 1st print. 24 cm/9,4". 184 S. mit zahlr. Abb. Illustrierter Originalkarton (Softcover). Einband gedunkelt u. braunfleckig. Current Concepts in Biology Series.

Paperback. Zustand: Good. 184 pages. cover worn. Text tanned.

deficiency and added auxin (S. A. Canad. J. of Bot. Vol. 58, Nr. 8) 1980. S. 856 - 866. m. zahlr. Abb. geklammert -2) -Sonderabdruck-.

Zustand: Gut. Gebraucht - Gut * good, clean condition, no markings in text *.

Zustand: Good. 1989th Edition. Former library copy. Pages intact with minimal writing/highlighting. The binding may be loose and creased. Dust jackets/supplements are not included. Includes library markings. Stock photo provided. Product includes identifying sticker. Better World Books: Buy Books. Do Good. …

Zustand: New.

Gebunden. Zustand: New.

Zustand: New. In English.

Zustand: New. In English.

Taschenbuch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - This book provides an excellent illustration of the interrelationship between progress in scientific methodology and conceptual advances, and its publica tion should contribute to further advances. It is well known that major advances in understanding often follow the development of new methods. The development of the acetylene reduction assay for nitrogenase activity provides a good example of this interrelationship between theory and methods. Theoretical knowledge led to a search for substrates for nitro genase that could be assayed for more easily than ammonium, the normal product of the enzyme. The discovery of the reduction of acetylene to ethylene by nitrogenase provided the ideal answer to the problem by provid ing a rapid, specific, nondestructive, and inexpensive assay for nitrogenase activity. This assay is now used by almost every laboratory doing research on nitrogen fixation. However, further use and development of the acetylene reduction assay has shown that it can underestimate nitrogenase activity and can even give incorrect relative values under some circumstances. The major problem is that exposure of legume nodules to acetylene can cause a large increase in the resistance to oxygen diffusion into the nodule. This reduced supply of oxygen decreases the rate of nitrogenase activity within a few minutes.…

Buch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - This book provides an excellent illustration of the interrelationship between progress in scientific methodology and conceptual advances, and its publica tion should contribute to further advances. It is well known that major advances in understanding often follow the development of new methods. The development of the acetylene reduction assay for nitrogenase activity provides a good example of this interrelationship between theory and methods. Theoretical knowledge led to a search for substrates for nitro genase that could be assayed for more easily than ammonium, the normal product of the enzyme. The discovery of the reduction of acetylene to ethylene by nitrogenase provided the ideal answer to the problem by provid ing a rapid, specific, nondestructive, and inexpensive assay for nitrogenase activity. This assay is now used by almost every laboratory doing research on nitrogen fixation. However, further use and development of the acetylene reduction assay has shown that it can underestimate nitrogenase activity and can even give incorrect relative values under some circumstances. The major problem is that exposure of legume nodules to acetylene can cause a large increase in the resistance to oxygen diffusion into the nodule. This reduced supply of oxygen decreases the rate of nitrogenase activity within a few minutes.…

Paperback. Zustand: Brand New. 268 pages. 9.25x6.10x0.61 inches. In Stock.

Zustand: New. Editor(s): Torrey, J.G.; Winship, L.J. Series: Developments in Plant and Soil Sciences. Num Pages: 248 pages, biography. BIC Classification: PSB; PSTD. Category: (P) Professional & Vocational; (UP) Postgraduate, Research & Scholarly. Dimension: 234 x 156 x 15. Weight in Grams: 553. . 1989. Hardback. . . . . Books ship from the US and Ireland. …

Zustand: Fair. Washinton, D.C.: United States Government Printing Office, 1857. Early edition. Volume 7. 4to Hardcover. 23+42+204+28+116+37pp. B/W platese and tables. Reading Copy. Lacking backstrip. Heavy edgewear. Hinges cracked. Pages age toned. With typical period foxing throughout. (US history, geography, natural history, exploration, travel) Inquire if you need further information. NOT AVAILABLE FOR SHIPMENT OUTSIDE OF THE UNITED STATES. …