The conversion of waste materials in our environment into useable chemical products is a popular issue these days. Here, we report on the production of zincite powder using a very simple hydrometallurgical method. Within two hours, 92.23% of the original 10 g/L SZCB reacted at ideal leaching conditions (2.5 mol/L HCl, 80_C). The result predicted the diffusion model as rate determining step, with calculated Ea of 28.53 kJ/mol. The precipitated hydroxide was calcined to produce pure zincite powder of yield 85.2%. Analyses using X-ray diffraction (XRD) and scanning electron microscopy (SEM) revealed that the high purity ZnO existed as a flower-like spherical aggregation and antimicrobial testing was later carried out to be reported in part B of the research. Keywords: Hydrometallurgy, Kinetics, Metallurgy, Powder Technology, X-ray, Zincite..

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This work examines the thermal diffusivity properties of four different materials, ceramic, stainless steel, plastic, and glass, using the one-dimensional heat equation's Initial Boundary Value Problem (IBVP) framework. We investigate the transient thermal behaviour of these materials using numerical techniques like the Crank-Nicolson method and the explicit FTCS (Forward-Time Central-Space) method. We perform simulations and analyse heat transfer dynamics and temperature distributions using Python implementations with uniform step sizes. According to our research, there are notable differences in the thermal diffusivity performance of the materials, with stainless steel showing better conductive qualities. Furthermore, a look at the midpoint temperature profiles of the cups provides information on the thermal and temporal dynamics. A comparison of the Crank-Nicolson and FTCS approaches shows how effective the latter is in producing precise and stable solutions. The study contributes t.....

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Membrane science has become a study that has received significant attention for its use in membrane filtration. The development of membrane science has accelerated with the use of nanotechnology. Various studies on the use of membranes in water treatment filtration have been conducted, but many focus on single materials and separation effectiveness. However, research presenting developments in membrane technology that focus on the shift from the polymeric era to nanocomposites has not been presented. This gap led this study to map the evolution of membrane science as a direction for future research. A total of 13,983 documents obtained from Scopus were analyzed. Open Refine and Microsoft Excel were used for metadata cleaning, while VOSviewer and IIPmaps were used for data visualization. The analysis was conducted to obtain data on the development and distribution of publications, trending keywords, research transitions, and future research directions. The results show that publications.....

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Chemical compositions of V. negundo and V. trifolia essential oils and their anatomical study were determined. The GC-FID and GC_MS analysis of essential oils resulted in the identification of 14 and 18 components were identified from the leaf oils of V. negundo (92.8%) and V. trifolia (91.5%), respectively. The results revealed that the essential oils are made up principally of _-elemene (43.1%), spathulenol (9.8%) for V. negundo, while viridiflorol (42.3%) and _-caryophyllene (21.7%) for V. trifolia. Meanwhile, for anatomical part, the oil gland has been found in the lamina, midrib and petiole of all essential oils. Keywords: Verbenaceae, Vitex negundo, Vitec trifolia, essential oil, _-elemene, viridiflorol, anatomy..

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Penyelidikan ini bertujuan mengkaji kesan Modul Kelompok Bimbingan Teori Pilihan Terapi Realiti (MKBTPTR) terhadap dua aspek kerjaya murid iaitu penerokaan kerjaya dan membuat keputusan kerjaya dalam kalangan murid tingkatan emapat di dua buah sekolah menengah harian di Hulu Terengganu, Terengganu. Penyelidikan secara kuantitatif menggunakan kaedah reka bentuk kuasi eksperimen melibatkan 120 murid berumur 16 tahun yang dipilih secara rawak berdasarkan pembahagian kepada tiga kumpulan: Kelompok Bimbingan Kecil (KBK) (R1a, R1b, R1c; n=30), Kelompok Bimbingan Besar (KBB) (R2; n=30), dan Kelompok Kawalan (KK) (K1; n=60). Intervensi dijalankan secara mingguan selama 10 minggu melibatkan 8 sesi dan 12 aktiviti. Dua set instrumen telah digunakan untuk mengukur penerokaan kerjaya iaitu Soalselidik Penerokaan Kerjaya (CESR) dan membuat keputusan kerjaya iaitu Soalselidik Kesukaran Membuat Keputusan Kerjaya (CDDQR). Data dianalisis menggunakan SPSS versi 22.0 terhadap data praujian dan pascaujia.....

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The consumption of meat has long been associated with various health and environmental concerns, prompting the exploration of alternative protein sources. The study aimed to formulate a plant-based ball using the heart of the coconut palm (ubod) as an alternative to meat. A quantitative research method and quasi-experimental research design were used in this study. The research environment was one of the state universities in Cebu City, Philippines with 38 respondents. The Sensory Evaluation Form and Hedonic Rating Scale were used as an instrument for data gathering. Among the four treatments, treatment 3 was chosen to undergo microbial analysis with the best measurement of 70% ubod and 30% flour. Thus, the results of the microbial analysis of the product were within the safe limit and safe for consumption. Four treatments of ubod ball were prepared and the results showed that the treatment 2 and treatment 3 ubod balls are acceptable and do not have significant differences in terms of .....

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Graphene has attracted the attention of researchers as it shows exceptional electrical, mechanical, and thermal properties that are beneficial for various applications, including flexible sensors and supercapacitors. Therefore, much laboratory work was conducted to study further potential application of graphene. However, complex procedures and waste consideration are other challenges for developing graphene-based-application devices. Therefore, using a density functional theory (DFT) to intensively study graphene and its potential to be combined with various materials, resulting in a lower-cost and more efficient approach. This review provides a comprehensive overview of the fundamental theory in DFT, followed by graphene and its hybrids in computational work. Hybridizing graphene with other nanomaterials significantly modifies its bandgap and density of state, which are potential for sensing and electronic devices. Moreover, an in-depth analysis of open-source and commercial software.....

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Kajian ini bertujuan untuk meningkatkan kemahiran menulis karangan perbahasan Bahasa Tamil kalangan pelajar Tingkatan 3 melalui penggunaan teknik ToHuCoKeP. Seramai 30 murid dari sebuah sekolah daerah Johor Bahru dipilih sebagai responden melalui kaedah persampelan rawak. Daripada laporan analisis item soalan pertengahan tahun membuktikan kebanyakan pelajar di sekolah tersebut mempunyai masalah penulisan karangan perbahsan. Kajian menggunakan reka bentuk kualitatif dengan instrumen ujian pra, ujian pasca, temu bual, dan analisis dokumen. Data dianalisis secara statistik deskriptif (peratusan) dan tematik. Dapatan menunjukkan peningkatan ketara selepas enam kelas intervensi, dengan semua murid menunjukkan penguasaan yang kepujian dalam mengolah isi, 82% dalam pengurusan struktur karangan, dan semua muridmempunyai peningkatan dari segi keseluruhan markah. Enam belas murid mendapat tahap penguasan cemerlang iaitu antara 33 hingga 40 markah selepas penggunaan teknik ToHuCoKeP dalam karanga.....

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Kajian ini bertujuan untuk menganalisis hubungan antara amalan organisasi pembelajaran dan keberkesanan latihan dalam kalangan penguat kuasa Pihak Berkuasa Tempatan (PBT) di Selangor. Pendekatan kuantitatif dengan menggunakan kaedah soal selidik digunakan untuk menganalisis data daripada 344 responden yang dipilih secara rawak berstrata berdasarkan kategori penarafan PBT. Instrumen soal selidik diadaptasi daripada soal selidik Dimensi Pembelajaran Organisasi dan Model Penilaian Latihan Kirkpatrick_s untuk mengukur pemboleh ubah utama. Data dianalisis melalui statistik deskriptif dan inferens. Analisis deskriptif menunjukkan tahap tinggi bagi kedua-dua pemboleh ubah iaitu amalan organisasi pembelajaran (M=4.237, SD=0.222) dan keberkesanan latihan (M=4.246, SD=0.311). Analisa ANOVA menunjukkan terdapat perbezaan yang signifikan bagi keberkesanan latihan yang dijalankan mengikut faktor umur penguatkuasa [F (3,344) = 12.133, p=0.000], kategori penarafan PBT [F (2,344) = 5.661, p=0.000], da.....

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This study examined the relationship between college students_ perceptions of artificial intelligence-supported personalized learning experiences and their learning motivation in the context of higher education in China. The purpose of the study was to explore how students_ evaluations of perceived usefulness, perceived ease of use, interactivity, and technical support are related to different types of learning motivation. A quantitative survey design was employed, and data were collected from 365 Chinese university students who had experience using artificial intelligence-related learning tools after data screening. Descriptive statistics, correlation analysis, and multiple regression analysis were conducted. Reliability analysis showed satisfactory internal consistency for all measurement scales with Cronbach alpha values ranging from 0.79 to 0.92. The findings indicated that students generally reported positive perceptions of artificial intelligence-supported personalized learning e.....

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