ERNEST R DAVIDSON (18 risultati)

Soft cover. Condizione: Near Fine. 1st Edition. First edition, first printing of this collection of 14 short stories. Featured are A Case of Coincidence by Ruth Rendell, One Hour to Doom by Stephen Wasylyk, How I Became a Criminal by T.M. Adams, The Man Who Pretended to Like Baseball by Isaac Asimov, Events at Headland Cottage by William Bankier, A Time of Summing Up by Ernest Savage, I Can't Go Home by Sylvia Tacker, Graveyard Shift by E.P. Moses, Like Father Like Son by Charles R. McConnell, The Edinburgh Landlady by Aubrey Davidison, The Adventure of the Belles Letters by Robert L. Fish, The Turning Point by Henry T. Parry, A Debt to Be Paid by Dick Stodghill, The Third Floor Closet by Jack Ritchie, The Problem of the Courthouse Gargoyle by Edward D. Hoch. In near fine condition.

No Binding. Condizione: Good. ORIGINAL articles, disbound from journal; no covers; small chips along gutter where disbound; o/w in good condition. Journal.

Soft cover. Condizione: Very Good. M. Witmark & Sons 1923. Very good. Sheet music. Closed tear to spine. Faint store stamp to cover. Sheet music.

hardcover. Condizione: Good. Hardcover ex-library with typical marks shows moderate cover wear. Text is unmarked. Ships FAST!

HRD. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

Condizione: New.

Hardcover. Condizione: new. Hardcover. This work introduces the reader to the use of ab initio calculations of electronic structure to provide models for processes in organic chemistry. The emphasis is on those processes where quantum effects are large and must be adequately considered for even a qualitative understanding. This includes, for example, diradical and carbene intermediates, elimination reaction mechanisms, charge transfer and electronic excited states. The methods introduced include valence bond, CASSCF, MRMP2 and other approaches to open shell molecules. Introduces the reader to the use of ab initio calculations of electronic structure to provide models for processes in organic chemistry. The book's emphasis is on those processes where quantum effects are large and must be adequately considered for even a qualitative understanding. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Condizione: As New. Unread book in perfect condition.

Hardback. Condizione: New. This volume focuses on the use of quantum theory to understand and explain experiments in organic chemistry. High level ab initio calculations, when properly performed, are useful in making quantitative distinctions between various possible interpretations of structures, reactions and spectra. Chemical reasoning based on simpler quantum models is, however, essential to enumerating the likely possibilities. The simpler models also often suggest the type of wave function likely to be involved in ground and excited states at various points along reaction paths. This preliminary understanding is needed in order to select the appropriate higher level approach since most higher level models are designed to describe improvements to some reasonable zeroth order wave function. Consequently, most of the chapters in this volume begin with experimental facts and model functions and then progress to higher level theory only when quantitative results are required.In the first chapter, Zimmerman discusses a wide variety of thermal and photochemical reactions of organic molecules. Gronert discusses the use of ab initio calculations and experimental facts in deciphering the mechanism of ?-elimination reactions in the gas phase. Bettinger et al focus on carbene structures and reactions with comparison of the triplet and singlet states. Next, Hrovat and Borden discuss more general molecules with competitive triplet and singlet contenders for the ground state structure. Cave explains the difficulties and considerations involved with many of the methods and illustrates the difficulties by comparing with the UV spectra of short polyenes. Jordan et al discuss long-range electron transfer using model compounds and model Hamiltonians. Finally, Hiberty discusses the breathing orbital valence bond model as a different approach to introducing the crucial ?? correlation that is known to be important in organic reactions.

Condizione: New.

Condizione: New. In.

Condizione: As New. Unread book in perfect condition.

Paperback. Condizione: Brand New. 379 pages. 9.00x6.25x1.25 inches. In Stock.

Hardback. Condizione: New. This volume focuses on the use of quantum theory to understand and explain experiments in organic chemistry. High level ab initio calculations, when properly performed, are useful in making quantitative distinctions between various possible interpretations of structures, reactions and spectra. Chemical reasoning based on simpler quantum models is, however, essential to enumerating the likely possibilities. The simpler models also often suggest the type of wave function likely to be involved in ground and excited states at various points along reaction paths. This preliminary understanding is needed in order to select the appropriate higher level approach since most higher level models are designed to describe improvements to some reasonable zeroth order wave function. Consequently, most of the chapters in this volume begin with experimental facts and model functions and then progress to higher level theory only when quantitative results are required.In the first chapter, Zimmerman discusses a wide variety of thermal and photochemical reactions of organic molecules. Gronert discusses the use of ab initio calculations and experimental facts in deciphering the mechanism of ?-elimination reactions in the gas phase. Bettinger et al focus on carbene structures and reactions with comparison of the triplet and singlet states. Next, Hrovat and Borden discuss more general molecules with competitive triplet and singlet contenders for the ground state structure. Cave explains the difficulties and considerations involved with many of the methods and illustrates the difficulties by comparing with the UV spectra of short polyenes. Jordan et al discuss long-range electron transfer using model compounds and model Hamiltonians. Finally, Hiberty discusses the breathing orbital valence bond model as a different approach to introducing the crucial ?? correlation that is known to be important in organic reactions.

Hardcover. Condizione: new. Hardcover. This work introduces the reader to the use of ab initio calculations of electronic structure to provide models for processes in organic chemistry. The emphasis is on those processes where quantum effects are large and must be adequately considered for even a qualitative understanding. This includes, for example, diradical and carbene intermediates, elimination reaction mechanisms, charge transfer and electronic excited states. The methods introduced include valence bond, CASSCF, MRMP2 and other approaches to open shell molecules. Introduces the reader to the use of ab initio calculations of electronic structure to provide models for processes in organic chemistry. The book's emphasis is on those processes where quantum effects are large and must be adequately considered for even a qualitative understanding. Shipping may be from our Sydney, NSW warehouse or from our UK or US warehouse, depending on stock availability.

Couverture souple. Condizione: Neuf.

Single Issue Magazine. Condizione: Good. Illustrated by Peskin, Hy; Pachner, William; Wolsky, Milton L.; Manning,Jack; Chiriaka, Ernest; Kuhn, Walt; Bugg, Robert; Karger, George; Vebell,Edward; Brown, Elmore (illustratore). First Edition. 94 pages. Articles:.The House at Hyde Park - the home FDR loved; Spare-Time Statesman - President of General Electric, Charles E. Wilson; Does the Army Want the Reserves? - its brass hats view civilian soldiers with mixed feelings; Sketches in Sawdust - Paintings of Circus folk; Why Atoms Don't Fly - obstacles to atomic-powered aircraft; The Fat of the Land - a new theory of obesity and its cure. Fiction: I'm a Stronger in Town Myself (part 1 of 3); The Half-Shot Hereford; A Very Funny Guy; Bride and Room; A Sure Thing; Madam President (conclusion). Includes ads for: Parker pens 1951; Pepsodent - featuring Marjorie Groats; Lifebuoy soap; RCA Victor radios and phonographs; Milky Way Chocolate Bars; Diamond Trucks - great color photo; Willys-Overland Motors "Jeep"; Drewry's Old Stock Ale - featuring Mountie; Argus cameras (twin lens); Pontiac - centerfold; Stewart-Warner radios; Oldsmobile; Foot Pals; Walt Disney's "Melody Time" movie; Templeform hats; DeSoto cars; GM Electro-motive division; Solovox; Dutch Boy Paint; Frazer cars; Santa Fe Railroad; National Guard; United Jewish Appeal - full page showing hoards behind barbed wire; Back cover Coke ad shows young lady who has stopped for a break from driving. Average wear. Unmarked. A sound vintage copy.; Folio - over 12" - 15" tall; Collier's Magazine, April 10, 1948 House at Hyde Park - the home FDR loved; Spare-Time Statesman - President of General Electric, Charles E. Wilson; Does the Army Want the Reserves? - its brass hats view civilian soldiers with mixed feelings; Sketches in.

Buch. Condizione: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - This volume focuses on the use of quantum theory to understand and explain experiments in organic chemistry. High level ab initio calculations, when properly performed, are useful in making quantitative distinctions between various possible interpretations of structures, reactions and spectra. Chemical reasoning based on simpler quantum models is, however, essential to enumerating the likely possibilities. The simpler models also often suggest the type of wave function likely to be involved in ground and excited states at various points along reaction paths. This preliminary understanding is needed in order to select the appropriate higher level approach since most higher level models are designed to describe improvements to some reasonable zeroth order wave function. Consequently, most of the chapters in this volume begin with experimental facts and model functions and then progress to higher level theory only when quantitative results are required.In the first chapter, Zimmerman discusses a wide variety of thermal and photochemical reactions of organic molecules. Gronert discusses the use of ab initio calculations and experimental facts in deciphering the mechanism of ?-elimination reactions in the gas phase. Bettinger et al focus on carbene structures and reactions with comparison of the triplet and singlet states. Next, Hrovat and Borden discuss more general molecules with competitive triplet and singlet contenders for the ground state structure. Cave explains the difficulties and considerations involved with many of the methods and illustrates the difficulties by comparing with the UV spectra of short polyenes. Jordan et al discuss long-range electron transfer using model compounds and model Hamiltonians. Finally, Hiberty discusses the breathing orbital valence bond model as a different approach to introducing the crucial ?? correlation that is known to be important in organic reactions.