Stephen hofer (34 resultados)

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

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

Hardcover. Condición: 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 (ilustrador). Signed by Author(s).…

Condición: good. Signs of wear and consistent use.

paperback. Condición: 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.

Condición: acceptable.

Paperback. Condición: 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.

Condición: New. Satisfaction Guaranteed or your money back.

Condición: 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. Condición: As New.

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

Hardcover. Condición: New.

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

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

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

Encuadernación de tapa blanda. Condición: Muy bueno.

Wraps. Condición: 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. Condición: 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. Condición: 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.…

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

Hardcover. Condición: 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.…

Condición: 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.…

Hardcover. Condición: Very Good. Very Good. Dust Jacket may NOT BE INCLUDED.CDs may be missing. SHIPS FROM MULTIPLE LOCATIONS. book.

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

Condición: Very Good. ** Signed gift inscription by Alan Bronstein on the front endpaper **; Very Good in a Very Good Minus dust jacket; Hardcover; Dust jacket is clean and intact with no tears, just moderate shelfwear to the back, and has not been price-clipped (Now fitted with a new, Brodart jacket protector); Light wear to the boards; The textblock edges are unblemished; The endpapers and all text pages are clean and unmarked; The binding is excellent with a straight spine; This book will be shipped in a sturdy cardboard box with foam padding; Large Format (11.75" - 12.75" tall); Heavy (9.6 lbs); Black dust jacket with image of colored diamond, and title in white lettering; 1998, Ashland Press; 742 pages; "Collecting and Classifying Coloured Diamonds: An Illustrated Study of the Aurora Collection," by Stephen C. Hofer.…

Hardcover. Condición: Near Fine. 1st Edition. Collecting and Classifying Coloured Diamonds: An Illustrated Study of the Aurora Collection by Stephen C. Hofer. Copy number240 of a limited edition of 250 copies. Rare copy inscribed by author on half title page. Very large and heavy book bound in full leather with custom made slipcase. Hardcover first edition, first printing published in 1998 by Ashland Press. Inscribed by Author(s).…

Velobound. Condición: Very good. Presumed First Edition, First printing. x, 74 pages, plus covers. Tables. Figures (some with color). References Appendices A. - D. Rear cover has mailing label and ink notation. 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 (PT1 H) required for the onset of phase transformation with respect to temperature is represented by the best-fit line, PT1 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 (-55°C) of the tested temperature range, the phase transformation is permanent and irreversible. However, at the upper bound (75°C), the phase transformation is completely reversible as the stress causing phase transformation is removed.…