In this work, ZnO NPs was synthetized via use an economical, inexpensive, and effective aqueous bio-product extracts for the Phoenix dactylifera L. The effect of 0.2-1.0 g of zinc acetate (Zn [OOCCH3]2,2H2O) mass on the size of the zinc oxide NPs was studied. UV-Vis spectrophotometer, Fourier transfer infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and scanning electron microscopy (SEM) were used as technical characterization. Band gap energy was found to be in the average of 3.24-3.31eV. For the sample IR spectra, a feeble absorption peak at 559 and 673cm-1, which corresponds to the ZnO vibrations,wasfound. Hexagonal structure (wurtzite) of the ZnO nanoparticle was indicated trough XRD pattern analysis at the corresponding positions of 2θ 34.41˚ for (200) plane. Deduced grain sizes from XRD of the synthesized ZnO nanoparticles were between 13.58 and 16.66nm.
Medlar is a typical species with climacteric fruits that rapidly change their composition and physical properties after harvest. Given the interesting shape of its fruit and leaves, medlar should be planted more frequently in parks and gardens. Being cultivated as an ornamental tree, the paper’s aim was to determine the colour of leaves and fruits that have reached the maturity of consumption in medlar genotypes identified in the southwestern part of Romania. Colour indicators of medlar fruits, respectively, leaves, in terms of L*, a* and b* values were evaluated using a Minolta colorimeter (CR400 model). Following the colorimeter test, it recorded data that was subsequently downloaded and statistically processed. Positive values for a* and b* indicate that the colour of fruit, at maturity of consumption, was in the range of red-orange-yellow. Regarding the colour of mature leaves, the values obtained indicated the colour of leaves in the range red-orange-yellow (in 9 genotypes) and, respectively, yellow-yellow greenish-green (in 6 genotypes). It turns out that ripe fruits retain an attractive colour for consumers, and medlar leaves represent, through the autumn colours, a point of attraction in the landscape.
Translanguaging has become an essential pedagogical practice for educational institutions that can help them to gain more advantages within language learning. This paper has written with the purpose to identify the challenges of translanguaging in general and particularly higher education institutions in Saudi Universities. The article also discusses the importance of translanguaging for educational institutions. The list of translanguaing challenges provides a guideline for teachers to review their existing practices to identify bottlenecks in their current teaching practices so that barriers could be identified and removed to improve the overall effectiveness of language learning.
Aims: We examined the inhibitory effect of Kurozu moromimatsu (Kurozu-M) for vascular endothelial growth factor (VEGF) in the liver tissue to clarify the mechanisms of anti-carcinogenic effect of Kurozu-M in hepatocellular carcinoma (HCC) model.\nMethods: Sixteen F344 rats were divided into the two groups; control group that received basal rodent diet and Kurozu-M group that received basal diet including 2% Kurozu-M. Murine model of HCC was induced by administration of diethylnitrosamine (DEN) and weight changes were examined in both groups. All rats were sacrificed at 18 weeks after initial administration of DEN and serological tests, histology and VEGF levels of the liver were compared between both groups.\nResults: Body weights in Kurozu-M group at 18 weeks were significantly higher than those in the control group. Although there were no differences of serum levels of transaminases, albumin, and total bilirubin and histological findings of the liver, VEGF level (pg/mL) in the liver tissue was significantly lower in Kurozu-M group (192.1 ± 26.4) than that in the control group (290.4 ± 32.5).\nConclusion: Inhibitory effect for hepatic expressions of VEGF was estimated as one of the anti-carcinogenic mechanisms of Kurozu-M in DEN-induced HCC model.
