Strain-hardening cement-based composites (SHCC) are a novel class of fiber-reinforced concretes which exhibit high tensile strain capacity prior to failure localization. Although the behavior SHCC has been matter study in numerous research works, these under other loading modes scarcely investigated. The article at hand addresses mechanical two types normal-strength subject uniaxial tension, to...

A hybrid longitudinal-torsional ultrasonic transducer is designed and fabricated in this research. The design of the transducer was performed using the FE method with ABAQUS software, with the aim of combining the longitudinal and torsional vibration modes. The transducer horn is then fabricated using a 4-axis milling machine. The PZT stacks are employed in order to excite the transducer. The t...

Permeabilized nuclei from mammalian cells encapsulated within agarose microbeads in an isotonic buffer are active in transcription and replication (Jackson, D. A., and P. R. Cook. 1985. EMBO (Eur. Mol. Biol. Organ.) J. 4:913-918). Their DNA is intact and the nuclei are accessible to macromolecules. Myeloma nuclei prepared in this way were used to probe the extent of DNA negative supercoiling an...

MLC2v/ras transgenic mice display a phenotype characteristic of hypertrophic cardiomyopathy, with septal hypertrophy and focal myocyte disarray. Experimental measurements of septal wall mechanics in ras transgenic mice have previously shown that regions of myocyte disarray have reduced principal systolic shortening, torsional systolic shear, and sarcomere length. To investigate the mechanisms o...

We study the effect of torsional deformations on electronic properties single-walled transition metal dichalcogenide (TMD) nanotubes. In particular, considering forty-five select armchair and zigzag TMD nanotubes, we perform symmetry-adapted Kohn–Sham density functional theory calculations to determine variation in bandgap effective mass charge carriers with twist. find that metallic nanotubes ...

Abstract Experimental modal analysis is of great importance for the dynamic characterization structures. Existing methods typically employ out-of-plane forces excitation and measure acceleration or strain analysis. However, these encountered difficulties in some cases. In this work, we proposed an in-plane method based on thickness-shear ( d 15 ) piezoelectric transducers. Through combination d...

BACKGROUND In metastatic bone disease, prophylactic fixation of impending long bone fracture is preferred over surgical treatment of a manifest fracture. There are no reliable guidelines for prediction of pathological fracture risk, however. We aimed to determine whether finite element (FE) models constructed from quantitative CT scans could be used for predicting pathological fracture load and...