This study aims to conduct the synthesis and characterization of nanohybrid multilayer ZnO-SiO2/Chitosan (NHMZnO-SiO2/Chitosan) using SEM and TEM to show the rod-shape morphology. Furthermore, the compound is used as a textile fiber coating material for anti-bacterial and UV-protected applications. The process was followed by hydrophobization of Dodecyltrietoxysilane (DTS) using a 1,2,3,4-butane tetracarboxylic acid (BTCA) crosslinker. FT-IR showed that the coating of NHM-ZnO-SiO2/Chitosan on textile fibers has covalent ester interactions with the appearance of the C=O stretching functional group at ~1700 cm-1 and each cotton fabric provided different intensity. Meanwhile, SEM showed that the layer has a rough surface, which is associated with the distribution of NHM-ZnOSiO2/Chitosan to create a hydrophobic surface, as evidenced by the water contact angle WCA = 100-119o. Furthermore, UV-DRS analysis was also conducted for UV protection testing and a decrease in the value of Eg = 2.87 eV on textiles coated with NHM-ZnO-SiO2/Chitosan and DTS was obtained. Anti-bacterial activity of uncoated, BTCA - ZnO-SiO2/Chitosan coating, BTCA - ZnO-SiO2/Chitosan coating, and DTS textiles were evaluated against bacterial cells of Staphylococcus epidermidis (37.7 - 47.2) mm and Pseudomonas aeruginosa (42.0 - 49.2) mm.

The biosynthesis of ZnO is performed through enzymatic mechanisms for controlling the particle size and morphology with using the sol‐gel method. Furthermore, this method utilizes a stabilizer obtained from the cell biomass of Aspergillus niger mold in order to yield homogeneous and consistent products. The evaluation of functional, morphological, and antibacterial activities was carried out at pH 6.0‐13.0. The analysis FT‐IR showed the interaction of hydroxyl groups, aromatic rings, as well as N−H and O−Zn‐O compounds at a wavenumber of 401–584 cm−1. The XRD and SEM characterizations showed that ZnO structure and crystal phase were hexagonal wurtzite at dimensions of 36.2 ‐ 45.4 nm. The differences in pH also influenced the dimensions, morphology, and antimicrobial activity. ZnO with a pH of 8.0 was characterized by FESEM‐EDAX, based on the analysis of morphological uniformity. This characterization obtained rod and cube structures, with atomic ratios of Zn=61.5 % and O=38.5 %. The UV‐DRS spectrum showed that the optical band gap with a value of Eg=3.00–3.11 eV. The differences in morphology further distinguished antibacterial properties on textile fibers, through the use of the Gram ‐ and + bacteria (Pseudomonas aeruginosa and Staphylococcus aureus), with inhibition zones of 17–21 mm and 21–25 mm, respectively. Therefore, ZnO is classified as a very strong antibacterial material than amoxicillin, with an inhibition zone of 13.6 mm.

The purpose of this research is determining the effect of some  treatment combinations and to determine the combination of best compost bunches empty palm oil and dolomite that could support growth seeds palm oil plantations in a main nursery. This research has been conducted in the experimental field, Agriculture Faculty, University of Riau from April to July 2015. The research used Completely Randomized Design Factorial that consisting of two factors. The first factor is giving compost bunches empty palm oil : (37,5, 75 and 112,5 g/polybag).  The  second  factor  is  giving  lime  dolomite  (CaMg  (CO3)2) : (9, 18 and 30 g/polybag).   Each combination made three replications and two plants. The data were statistically analyzed using analysis of variance and the means were tested with Duncan 5%. The research results show that combination of compost bunches empty palm oil and dolomite had show the real effect on the increase in diameter hump of seedlings , but the effect not real on the parameters height of seedlings,increase number of leaves, volume roots, ratio crown rootsand and dry weight of seedlings. Combination compost bunches empty palm oil 112,5 g/polybag and dolomite 18 g/polybag showed better results for the growth of palm oil seedlings.

This study discusses the effectiveness of video tutorial media in improving the life skills of making aloe vera jam for deaf children. The subjects of this study were five deaf children. This study used a pre-experimental design method, the abilities assessed by the pretest and posttest designs were processed and compared using the Wilcoxon Sign Rank Test.Based on the results of the pretest and posttest, it is known that the pretest average value is 24.60 and the posttest average value is 84. The average value is then processed to find the difference using the Wilcoxon Sign Rank Test. From the results of data analysis obtained Zhitung = -2.032 with probability or Asymp Sig (2-tailed) = 0.42 at a significant level of 5% and α = 0.05. The alternative hypothesis is accepted because Zhitung> Asymp. Sig. (2-tailed). So it can be concluded that the video tutorial media is effective in improving the life skills of making aloe vera jam for deaf children at SLB Perwari, Padang.Key words: Life skills, making aloe vera, deaf

Penelitian ini dilatar belakangi oleh permasalahan di kelas VII/B di SLB Perwari Padang. Dimana media pembelajaran yang diberikan guru dikelas belum mencapai hasil yang baik bagi hasil belajar anak khususnya pada pembelajaran Ilmu Pengetahuan Alam tentang mengenal bagian tumbuhan. Guru masih menggunakan metode yang biasa tanpa ada media alternatif yang lain digunakan dalam proses belajar mengajar di kelas. Selain itu, kurangnya ketertarikan anak terhadap metode yang diberikan oleh guru di kelas. Oleh sebab itu, permasalahan yang akan di kaji dalam penelitian ini adalah, “Apakah penggunaan media Visual Schedule efektiv digunakan untuk meningkatkan kemampuan mengenal bagian tumbuhan dalam pembelajaran Ilmu Pengetahuan Alam bagi anak dengan hambatan pendengaran di kelas VII/B SLB Perwari Padang?” Jenis penelitian ini menggunakan metode eksperimen semu (quasi eksperimental design), dengan tujuan untuk mengungkapkan pengaruh dan sekaligus perbedaan antara dua variabel yang berbeda. Rancangan penelitian yang di gunakan adalah The One Group Pretest-Posttest Design. Penelitian ini dilakukan pada anak dengan hambatan pendengaran kelas VII/B dengan jumlah siswa 4 orang. Untuk pengujian hipotesis penelitian ini menggunakan statistik uji Mann Whitney dengan taraf signifikan 5%( =0,05). Berdasarkan hasil penelitian, menunjukkan bahwa hasil pretest yang diperoleh adalah 2,75 sedangkan hasil posttest yang diperoleh adalah 7, dari kedua hasil tersebut dapat diperoleh peningkatan skor setelah di berikan treatment adalah sebanyak 4,25. Hasil penelitian menunjukkan bahwa kemampuan mengenal bagian tumbuhan yang di belajarkan dengan menggunakan media Visual Schedule memperoleh kenaikan yang signifikan. Dapat di simpulkan bahwa media Visual Schedule efektiv digunakan untuk meningkatkan kemampuan mengenal bagian tumbuhan pada anak dengan hambatan pendengaran.