Stephen hofer (39 résultats)

Hardcover. Etat : Very Good. 2nd Printing. With dust jacket. It's a well-cared-for item that has seen limited use. The item may show minor signs of wear. All the text is legible, with all pages included. It may have slight markings and/or highlighting.

paperback. Etat : Very Good. Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority.

paperback. Etat : Very Good. Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority.

Hardcover. Etat : Very Good. No Jacket. May have limited writing in cover pages. Pages are unmarked. ~ ThriftBooks: Read More, Spend Less.

paperback. Etat : Very Good. Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority.

Hardcover. Etat : Very Good. Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority.

Hardcover. Etat : Very Good. Forever Brilliant: The Aurora Collection of Colored Diamonds This book is in very good condition and will be shipped within 24 hours of ordering. The cover may have some limited signs of wear but the pages are clean, intact and the spine remains undamaged. This book has clearly been well maintained and looked after thus far. Money back guarantee if you are not satisfied. See all our books here, order more than 1 book and get discounted shipping. .…

Hardcover. Etat : Very Good. Shipped within 24 hours from our UK warehouse. Clean, undamaged book with no damage to pages and minimal wear to the cover. Spine still tight, in very good condition. Remember if you are not happy, you are covered by our 100% money back guarantee.

hardcover. Etat : Acceptable. Fast Shipping - Safe and Secure 7 days a week.

Hardcover. Etat : Very Good. 1st Edition. Quarto. Illustrated boards, no dust jacket. Second printing. Signed and inscribed by Grace Barrington Hofer on ffep. Some marks on boards, mild edge wear and bumps on edges of boards. Binding tight, text clean and unmarked. An unusual collection of nursery rhymes in both Spanish and English. Scarce in hardcover, scarce signed. Stephen Moncus (illustrateur). Signed by Author(s).…

paperback. Etat : Very Good. Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority.

Paperback. Etat : Very Good. Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority.

Etat : good. Signs of wear and consistent use.

Etat : acceptable.

Etat : New. Satisfaction Guaranteed or your money back.

Etat : Fine. xiv, 89, col illus. . HB. Fine in d/w. A collection of cut natural diamonds in a wide variety of colors, known as "the most comprehensive natural color diamond collection in the world". [9780965941020].

Hardcover. Etat : new. New Copy. Customer Service Guaranteed.

Hardcover. Etat : New.

Paperback. Etat : new. New Copy. Customer Service Guaranteed.

Paperback. Etat : New. In shrink wrap. Looks like an interesting title.

paperback. Etat : New. In shrink wrap. Looks like an interesting title.

paperback. Etat : As New.

Encuadernación de tapa blanda. Etat : Muy bueno.

Wraps. Etat : Very good. Presumed First Edition, First printing. Staplebound. 65, [3] pages. Tables. Figures. Formulae. Appendices, References. Specimens of poled and unpoled ''chem-prep'' PNZT ceramic from batch HF1035 were tested under hydrostatic, uniaxial, and constant stress difference loading conditions at -55, 25, and 75 C. The objective of this experimental study was to characterize the mechanical properties and conditions for the ferroelectric (FE) to antiferroelectric (AFE) phase transformations of this ''chem-prep'' PNZT ceramic to aid grain-scale modeling efforts in developing and testing realistic response models for use in simulation codes. As seen from a previously characterized material (batch HF803), poled ceramic from HF1035 was seen to undergo anisotropic deformation during the transition from a FE to an AFE phase. Also, the phase transformation was found to be permanent for the two low temperature conditions, whereas the transformation can be completely reversed at the highest temperature. The rates of increase in the phase transformation pressures with temperature were practically identical for both unpoled and poled PNZT HF1035 specimens. We observed that temperature spread the phase transformation over mean stress analogous to the observed spread over mean stress due to shear stress. Additionally, for poled ceramic samples, the FE to AFE phase transformation was seen to occur when the normal compressive stress, acting perpendicular to a crystallographic plane about the polar axis, equals the hydrostatic pressure at which the transformation otherwise takes place.…

Wraps. Etat : Good. Presumed First Edition, First printing. x, 74 pages plus back cover. Illustrations (most with color). References. Velobound. Format is approximately 8.5 inches by 11 inches. Unlimited Release. Ink note on front cover. Mailing label on back. Sandia is currently developing a lead-zirconate-titanate ceramic 95/5-2Nb (or PNZT) from chemically prepared ('chem-prep') precursor powders. Previous PNZT ceramic was fabricated from the powders prepared using a 'mixed-oxide' process. The specimens of unpoled PNZT ceramic from batch HF803 were tested under hydrostatic, uniaxial, and constant stress difference loading conditions within the temperature range of -55 to 75 C and pressures to 500 MPa. The objective of this experimental study was to obtain mechanical properties and phase relationships so that the grain-scale modeling effort can develop and test its models and codes using realistic parameters. The stress-strain behavior of 'chem-prep' PNZT under different loading paths was found to be similar to that of 'mixed-oxide' PNZT. The phase transformation from ferroelectric to antiferroelectric occurs in unpoled ceramic with abrupt increase in volumetric strain of about 0.7 % when the maximum compressive stress, regardless of loading paths, equals the hydrostatic pressure at which the transformation otherwise takes place. The stress-volumetric strain relationship of the ceramic undergoing a phase transformation was analyzed quantitatively using a linear regression analysis. The pressure (P{sub T1}{sup H}) required for the onset of phase transformation with respect to temperature is represented by the best-fit line, P{sub T1}{sup H} (MPa) = 227 + 0.76 T (C). We also confirmed that increasing shear stress lowers the mean stress and the volumetric strain required to trigger phase transformation. At the lower bound of the tested temperature range, the phase transformation is irreversible. At the upper bound (75 C), the phase transformation is completely reversible as the stress causing phase transformation is removed.…

Wraps. Etat : Very good. Presumed First Edition, First printing. 85, [1] pages plus back cover. Illustrations (most with color). References. Staplebound. Format is approximately 8.5 inches by 11 inches. Unlimited Release. Specimens of poled 'chem-prep' PNZT ceramic from batch HF803 were tested under hydrostatic, uniaxial, and constant stress difference loading conditions at three temperatures of -55, 25, and 75 C and pressures up to 500 MPa. The objective of this experimental study was to obtain the electro-mechanical properties of the ceramic and the criteria of FE (Ferroelectric) to AFE (Antiferroelectric) phase transformations so that grain-scale modeling efforts can develop and test models and codes using realistic parameters. The poled ceramic undergoes anisotropic deformation during the transition from a FE to an AFE structure. The lateral strain measured parallel to the poling direction was typically 35 % greater than the strain measured perpendicular to the poling direction. The rates of increase in the phase transformation pressures per temperature changes were practically identical for both unpoled and poled PNZT HF803 specimens. We observed that the retarding effect of temperature on the kinetics of phase transformation appears to be analogous to the effect of shear stress. We also observed that the FE-to-AFE phase transformation occurs in poled ceramic when the normal compressive stress, acting perpendicular to a crystallographic plane about the polar axis, equals the hydrostatic pressure at which the transformation otherwise takes place.…

Etat : very good. no dustjacket. 4to pp.742. very heavy book additional postage will apply, No Dustjacket. book.

Hardcover. Etat : Very Good. 1st Edition. 4to, xxi + pp742 beautifully illustrated throughout with charts and more than 700 colour photographs. Hardcover with dust jacket. DJ in very good condition with a little shelf wear to top of spine with small tear, a little rubbing to front cover and edges. Black cloth binding with gilt titles to spine in very good+ condition with very minimal shelf wear to top of spine. Inside in near fine condition. a very good copy of this beautifully produced book that showcases the Aurora Collection, one of the world's largest collections of natural coloured diamonds ever to be shown in public. Each of the 260 diamonds were photographed with precise colour calibration, and the book's printing has also been precisely colour matched and calibrated, so that the diamonds can be seen reproduced as realistically as possible. This is a very heavy book and may cost extra postage overseas. …

Illustrated troughout in color and black and white. Momumental study on Coloured Diamonds and the Aurora Collection. Dust jacket with some wear and scratches, two corners bumped, else a good copy. Heavy book, additional shipping charges may be required. Please ask for additional pictures.

Etat : fine. no jacket. 9 1/8 x 12 1/2" 742 pages limited edition, this is copy 200/250. edited by Eleanor K. Sommer. Chapters 7 and 8 (text and diagrams in collaboration with Nick Hale. Chapter 2 (colour photographs) in collaboration with Tino Hammid. shipping will be extra for this very large and heavy book, please inquire. Book looks as new. leather hardcover in cloth slipcase.…