introduction: the aim of this study was to evaluate the apical and coronal sealing of endodontic fillings promoted by the associations of sealer 26/gutta-percha, endofill/gutta-percha and resilon/ epiphany. materials and methods: it was used 38 human canines, 10 teeth for each test group and 4 teeth for each control group. after teeth conventional endodontic treatment, they were immersed in sal...

Heat stress during the grain-filling stage seriously affects grain quality in rice. However, very limited information is available regarding effects of short-term high nighttime temperature (HNT) on chalkiness formation In this paper, HNT at early (7 days after ear emergence) rice and potential causes were investigated by using two varieties that differed susceptibility to temperature. Although...

We present new quantitative measurements of magnetic fields on the quiet Sun. The object was (a) to measure magnetic field strengths, and (b) to test the “kilogauss model,” which posits that the apparently weak fields are actually subtelescopic knots of kilogauss fields with small filling factors. We used a new arrangement we call the spectro-videomagnetograph (SPVMG), which applies the videoma...

The hearts of chick embryos of stages 9-13 were subjected to SEM, TEM and histochemical studies to ascertain possible regional differences in the structure and composition of the cardiac jelly. Two distinct regions, the cardiac jelly filling the space located between the myocardium and the endocardium (MECJ) and the cardiac jelly filling the dorsal mesocardium (EECJ), were distinguished by thei...

Epitaxial lateral overgrowth in tandem with the first-principles calculation was employed to investigate the determining factor of a preferred orientation of GaN on SiO2-patterned m-plane sapphire substrates. We found that the (1100)-orientation is favored over the (1103)-orientation in the region with a small filling factor of SiO2, while the latter orientation becomes preferred in the region ...

The sarcomere contains, in addition to thin and thick filaments, a filament composed of the giant protein titin (also known as connectin). Titin molecules anchor in the Z-disc and extend to the M-line region of the sarcomere. The majority of titin’s I-band region functions as a molecular spring. This spring maintains the precise structural arrangement of thick and thin filaments, and gives rise...