Hevesy george de (11 risultati)

Cloth. Condizione: Good. No Jacket. First Edition. First edition. No DJ. Ex-library with usual stamps, markings, spine indexing, card pocket, pastedowns. Cloth boards have edge wear, scratches, scuffs, rubbed corners/spine, slightly soiled. Minor dirt on edge. No writing in text. Book.

Hardcover. Condizione: Near Fine. No Jacket. 1st Edition. Frontispiece, ix, 447 pp. Original cloth. Near Fine, without dust jacket. Reprints 51 papers in Facsimile, many of which were previously reprinted in Hevesy's Adventures in Radioisotope Research (2 vols., 1962). This volume has been revised, and two new papers have been added, as well as 'numerous comments' (Introduction, p. ix). George de Hevesy: Nobel Prize, Chemistry, 1943, 'for his work on the use of isotopes as tracers in the study of chemical processes.'. …

orig. wrappers. Condizione: Unopened. Minor wear. VG. 24x16cm, Mitterlungen aus dem Institut für Radiumforschung, no LXVI. Offered here is the complete volume of "Sitzungsberichte der kaiserlichen Akademie der Wissenschaften", 123. Band, 9. Heft, 1914 : November, pagination running 1909-2196, containing Hevesy & Paneth's paper on pages 1909 to 1928. Together, as issued, with 12 other unrelated papers. [Hevesy, 1943 Nobel Chemistry laureate, carried out the first radioactive tracer experiment with Friedrich Adolf Paneth in 1913]. …

Hard Cover. Condizione: Fine. Condizione sovraccoperta: Good. First Edition. Original blue cloth. All edges gilt. Glassine dust wrapper with two pieces torn away.

Condizione: Near Fine. Kobenhavn 1937 - 1940. All octavo wraps. All from Det Kgl. Danske Videnskabernes Selskab. Biologiske Meddelelser. All in Near Fine condition. Range from 24 to 60 pages per monograph. Some text illus. Largely uncut. Most have small old library name stamp on cover or tp. All in English. Titles in lot: Studies on the Metabolism of Phosphorus in Animals (1937); Origin of Phosphorus Compounds in Hens' Eggs (1938); Excretion of Phosphorus (1939); Rate of Renewal of Acid Soluble Organic Phosphorus (1940); Interactcion of Plasma Phosphate (1939); Turnover of Lecithin, Cephalin (1940). Geroge de Hevesy was awarded the Nobel in Chemistry in 1943. Six pamphlets.…

Skand. Arch. Physiol., 72/3-4. - Berlin & Leipzig, Walter de Gruyter, 1935, 8°, pp.73-214, 44 Abbildungen, 3 Taf., orig. Broschur. First Print! "The availability of "heavy" water D20 together with the accurate methods for its determination in weak solution in H20 have opened up possibilities for the study of permeability problems. D20 and especially DHO which is predominantly present in weak solutions of heavy water behave in diffusion very nearly as normal water. The rate of diffusion of molecules in liquids depends namely in first approximation on the radius of the molecules alone. This was shown by Einstein to be the case for the movement of colloidal particles, and from the fact that numerous endeavours to separate radioactive isotopes through diffusion in liquids have failed entirely we conclude that Einsteins considerations are also applicable to the diffusion of small molecules. The radius of D20 is only 0-1 per cent larger than that of H2O molecules and the difference for DHO is still less, and we must assume that the diffusion coefficients of ordinary and heavy water will differ less than 0-1 per cent. The permeability of frogs skin has been studied before in a large number of experiments by Wertheimer, Pohle, Jurisic, Adolph and others. Without going into details we can state that on the basis of these experiments it is generally assumed that the skin allows water and certain dissolved substances to pass in, but resists in the living state the outward passage. It is claimed further (Adolph 1934) that in the living animal the nervous system influences definitely the rates of passage through the skin. ." G.v. Hevesy, et al. Georg von Hevesy (1885-1966), Hungarian physicist and chemist. He received the 1943 Nobel Prize in Chemistry for his work on the use of isotopes as tracers in studying chemical processes. Hevesy was the first to apply the radioactive tracer technique to biology, and he later used it in medical research. He also discovered X-ray fluorescence analysis. He was codiscoverer of hafnium, element 72 in the periodic table. Hevesy became an associate of the Institute of Theoretical Physics, Copenhagen, in 1920 and also of the Institute for Research in Organic Chemistry, Stockholm, in 1943.…

1 S. Kl.-4to. Hevesy wurde 1943 der Nobelpreis für Chemie für seine Arbeiten über die Anwendung der Isotope als Indikatoren bei der Erforschung chemischer Prozesse" verliehen. Mit alt montiertem Portrait (Zeitungsausschnitt).

1 S. Visitkartenformat. Hevesy wurde 1943 der Nobelpreis für Chemie für seine Arbeiten über die Anwendung der Isotope als Indikatoren bei der Erforschung chemischer Prozesse" verliehen. Beiliegend ein Zeitungsausschnitt.

664672 p. George Charles de Hevesy (18851966) was a radiochemist, Nobel laureate. He earned the Nobel Prize in Chemistry in 1943 "for his work on the use of isotopes as tracers in the study of chemical processes". Cover sunned, chipped at extremities. Otherwise in fine condition.

Skand. Arch. Physiol., 77/1-4. - Berlin & Leipzig, Walter de Gruyter, 1937, 8°, 178 pp., 19 Fig., orig. broschiertes, unafigeschnittenes, verlagsfrisches, Exemplar. First Print! Georg von Hevesy (1885-1966), Hungarian physicist and chemist. He received the 1943 Nobel Prize in Chemistry for his work on the use of isotopes as tracers in studying chemical processes. Hevesy was the first to apply the radioactive tracer technique to biology, and he later used it in medical research. He also discovered X-ray fluorescence analysis. He was codiscoverer of hafnium, element 72 in the periodic table. Hevesy became an associate of the Institute of Theoretical Physics, Copenhagen, in 1920 and also of the Institute for Research in Organic Chemistry, Stockholm, in 1943. "It is generally assumed that no regeneration of the brain tissue of'adult animals takes place. To test the validity of this assumption we investigated whether any formation of phosphatides takes place in the brain tissue of adult animals. This problem-cannot be attacked by ordinary chemical methods because these do not permit the making of a distinction between phosphatide molecules formed at different dates; this is, however, possible if we introduce a labelled phosphate into the animal body (Chievitz and Hevesy, 1935, 1937), labelled sodium phosphate for example, and investigate whether the formation of labelled phosphatides can be established in the brain of the animal. We carried out experiments on rats, mice, and rabbits." Hahn & Hevesy.…

First Edition. George de Hevesy's career encompassed both the discovery of a new element and the founding of isotopic tracer methodology, the latter earning him the Nobel Prize in Chemistry in 1943. His identification of hafnium in 1923, carried out in collaboration with the physicist Dirk Coster at Bohr's institute in Copenhagen, resolved a long-contested problem in periodic classification: it provided experimental confirmation of Bohr's prediction that element 72 should be a zirconium analogue rather than a rare earth, and a decisive refutation of Urbain's celtium claim, which had gone unchallenged for more than a decade. That the identification depended on X-ray spectroscopy rather than classical chemical analysis reflects the broader transformation of inorganic chemistry then underway, in which physical instrumentation was remaking the discipline's most fundamental methods. The four presentation copies offered here trace that work with unusual completeness: the original 1923 announcement marshalling spectroscopic and chemical evidence simultaneously against a competing priority claim and in support of Bohr's atomic theory; a technically precise 1925 paper demonstrating that a century of zirconium atomic weight determinations had been silently compromised by undetected hafnium contamination; a 1936 retrospective surveying the full evidentiary and theoretical basis of the discovery; and a 1951 contribution to a Festschrift for Manne Siegbahn in which Hevesy provides his most extended account of the episode, reconstructing the experimental sequence in detail and situating it within the history of atomic theory and analytical chemistry with the authority of three intervening decades. [with] Dirk Coster. "On the New Element Hafnium; reprinted from Nature, February 24, 1923." Edinburgh: R. & R. Clark, 1923. Offprint, small 8vo bifolium (176 × 118mm), pp. 3, [1]. Presentation copy. "The Atomic Weights of Zirconium and Hafnium; reprinted from Nature, March 7, 1925." Edinburgh: R. & R. Clark, 1925. Offprint, single leaf, printed on both sides, 8vo (223 × 144mm). Presentation copy. "The Discovery of Hafnium; reprinted from Current Science, Vol. V, No. 5, pp. 236-240, 1936." Bangalore: Indian Academy of Sciences, 1936. Offprint, 4to (246 × 186mm), pp. [1], 4, [1]. Presentation copy. "Historical Notes on the Discovery of Hafnium; in Arkiv för Kemi, Band 3, Nr. 58, pp. 543-548, 1951." Stockholm: Almqvist & Wiksells Boktryckeri AB, 1951. Offprint, 8vo (241 × 170mm), pp. 6. Presentation copy. Individual papers fully described HERE. Signed.…