A closed-form expression for shear band spacing in strain-hardening, strain-rate-hardening and thermally softening thermoviscoplastic materials is derived by studying the stability of a homogeneous solution of equations governing its simple shearing deformations. The wavelength of the perturbation that maximizes its initial growth rate is assumed to determine the shear band spacing, Ls: The dep...

We present and discuss the results of calculations of surface relaxations and rumplings for the 001 and 011 surfaces of BaTiO3 and PbTiO3 using a hybrid B3PW description of exchange and correlation. On the 001 surfaces, we consider both AO A=Ba or Pb and TiO2 terminations. In the former case, the surface AO layer is found to relax inward for both materials, while outward relaxations of all atom...

Emission spectra have been recorded for hot water at temperatures up to 1550 degreesC. Separate spectra have been recorded in the 800-1900 and 1800-2500 cm-1 range. Assignments are made using a linelist generated from high accuracy, variational nuclear motion calculations, and energy differences. The spectra contain many hot bending transitions of the form (0n0)-(0n-10), where states up to n = ...

Effect of the surface oxide layer on shape memory effect (SME) and superelasticity (SE) after marforming (deformation in martensitic state, followed by annealing at 713 K for 0.5 h an inert helium gas dry air) was investigated Ti-50.1Ni (at.%) single crystals, oriented along [011]-direction, under compression. Quenched [011]-oriented crystals alloy experience a one-stage B2-B19′ transformation ...

Tissue factor (TF) is aberrantly expressed in solid cancers and is thought to contribute to disease progression through its procoagulant activity and its capacity to induce intracellular signaling in complex with factor VIIa (FVIIa). To explore the possibility of using tissue factor as a target for an antibody-drug conjugate (ADC), a panel of human tissue factor-specific antibodies (TF HuMab) w...

Mailing address: Odilson Marcos Silvestre • Rua Oscar Freire, 1.967, apto. 10B, Pinheiros. Postal Code 05409-011, São Paulo – SP – Brazil E-mail: [email protected], [email protected] Manuscript received April 16, 2013; manuscript revised April 16, 2013; accepted May 10, 2013.

The structure of siccanol, a phytotoxic sesterterpene of fungal origin, was analyzed after chemical conversion by NMR spectroscopy. Siccanol was found to be an epimer of terpestacin that has been isolated from Arthrinium sp., and was thus renamed 11-epiterpestacin. Its stereochemistry was also identical with that of fusaproliferin, a structurally related mycotoxin from Fusarium proliferatum. Th...