Van der veken j (90 risultati)

Broschur. Condizione: Gut. 21. Jahrgang.. 32 Seiten; Organ der Vereinigung christlicher Lehrer an den Höheren Schulen Österreichs. Neben dem oben aufgeführten Aufsatz sind noch weitere Beiträge anderer Autoren in dem Heft enthalten. Das Werk befindet sich in einem guten Erhaltungszustand. Sprache: Deutsch Gewicht in Gramm: 100. …

COUV. SOUPLE. Condizione: TRES BON. 107 PAGES - COUV. TRES BIEN ILLUSTREE EN TRES BON ETAT - INT. TRES PROPRE NOMBREUSES ILLUSTRATIONS EN COULEUR 12X21 200g. REMI SURMONT - YAN VERSCHUEREN - JOS MONNENS - JOHAN DE MEESTER - P. VAN DER VEKEN (illustratore).

75 pp. -TEXT IN ENGLISH- Sprache: Englisch Gewicht in Gramm: 200 Large 8vo. Softcover, no dust jacket, binding rubbed and bumped, several pages with colored marks and underlings.

Condizione: New.

Paperback or Softback. Condizione: New. Structures and Conformations of Non-Rigid Molecules. Book.

Condizione: New.

Condizione: As New. Unread book in perfect condition.

103 pp. -TEXT IN ENGLISH- Sprache: Englisch Gewicht in Gramm: 200 Large 8vo. Softcover, no dust jacket, spine a bit discolored, binding rubbed and a bit bumped, inside good.

Condizione: NEW.

yellow stripe virus, determined by means of a fluorescein conjugated antiserum (S. A. Neth. J. Plant Path. 72) 1964. S. 105 - 113. m. zahlr. Abb. (St.) br. -3) -Sonderabdruck-.

PF. Condizione: New.

Soft. Condizione: Good. No Jacket. Cover has some curving, PP clean and clear Size: 8vo.

Condizione: New. In English.

Condizione: New.

Hardcover. Condizione: Good. No Jacket. 1st Edition. xxxiii - 202 pp. Kluwer Academic Publishers , Dordrecht - Boston - London 1993. First edition. Hardcover. Phaenomenologica - Collection fondée par H.L. Van Breda et publiée sous le patronage des centres d'archives-Husserl 129. Dark blue covers with silver spine and front lettering. Clean and unmarked inside. Ex. library of the Library of the Ghent University: usual labels, stamps and numbers. Otherwise a good/very good copy.…

Condizione: As New. Unread book in perfect condition.

Condizione: New. pp. 660.

's-Grav., n.d. 35 pp. Ills. Softcover. - Two stamps on front cover.

Kapellen, DNB, 1990. 128 pp. Paperback. *naam op schutblad, enkele potloodstrepen, verder in goede staat*.

Kapellen, DNB, 1990. 128 pp. Paperback. *goede staat*.

Hardcover. Condizione: As New. Sharp like new copy with original pencil price, no visible wear.

Condizione: New.

Condizione: New.

Condizione: As New. Unread book in perfect condition.

Condizione: New. In English.

Condizione: New.

Taschenbuch. Condizione: Neu. Druck auf Anfrage Neuware - Printed after ordering - From the beginnings of modern chemistry, molecular structure has been a lively area of research and speculation. For more than half a century spectroscopy and other methods have been available to characterize the structures and shapes of molecules, particularly those that are rigid. However, most molecules are at least to some degree non-rigid and this non-rigidity plays an important role in such diverse areas as biological activity, energy transfer, and chemical reactivity. In addition, the large-amplitude vibrations present in non-rigid molecules give rise to unusual low-energy vibrational level patterns which have a dramatic effect on the thermodynamic properties of these systems. Only in recent years has a coherent picture of the energetics and dynamics of the conformational changes inherent in non-rigid (and semi-rigid) molecules begun to emerge. Advances have been made in a number of different experimental areas: vibrational (infrared and Raman) spectroscopy, rotational (microwave) spectroscopy, electron diffraction, and, most recently, laser techniques probing both the ground and excited electronic states. Theoretically, the proliferation of powerful computers coupled with scientific insight has allowed both empirical and ab initio methods to increase our understanding of the forces responsible for the structures and energies of non-rigid systems. The development of theory (group theoretical methods and potential energy surfaces) to understand the unique characteristics of the spectra of these floppy molecules has also been necessary to reach our present level of understanding. The thirty chapters in this volume contributed by the key speakers at the Workshop are divided over the various areas. Both vibrational and rotational spectroscopy have been effective at determining the potential energy surfaces for non-rigid molecules, often in a complementary manner. Recent laser fluorescence work has extended these types of studies to electronic excited states. Electronic diffraction methods provide radial distribution functions from which both molecular structures and compositions of conformational mixtures can be found. Ab initio calculations have progressed substantially over the past few years, and, when carried out at a sufficiently high level, can accurately reproduce (or predict ahead of time) experimental findings. Much of the controversy of the ARW related to the question of when an ab initio is reliable. Since the computer programs are readily available, many poor calculations have been carried out. However, excellent results can be obtained from computations when properly done. A similar situation exists for experimental analyses. The complexities of non-rigid molecules are many, but major strides have been taken to understand their structures and conformational processes.…

Condizione: As New. Unread book in perfect condition.

Condizione: New. In English.

Gebunden. Condizione: New. From the beginnings of modern chemistry, molecular structure has been a lively area of research and speculation. For more than half a century spectroscopy and other methods have been available to characterize the structures and shapes of molecules, particul.