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7 record(s) found

Pencirian filem nipis kaliksarina didop dengan nanotiub karbon untuk pengesanan ion Cd2+

Abstract

Tujuan utama kajian ini adalah mengkaji kesan pengaruh pendopan nanotiub karbon (NTK) ke atas struktur dua jenis kaliks[8]arina dengan menggunakan kaedah salutan berputar. Sampel kaliks[8]arina + NTK dalam bentuk filem nipis disediakan melalui pencampuran kaliks[8]arina dengan NTK di mana kaliks[8]arina dilarutkan dalam kloroform terlebih dahulu dan memberi kepekatan 0.2 mg/ml. Pada permulaan kajian, sifat-sifat molekul kaliks[8]arina melalui penghasilan filem Langmuir telah dikaji dan dibincangkan dari segi tekanan permukaan-kawasan (Π-A) isoterma tanpa NTK. Seterusnya, filem nipis yang dihasilkan melalui kaliks[8]arina didopkan dengan NTK telah dianalisis dengan menggunakan mikroskop elektron pengimbas pancaran medan (FESEM), mikroskop elektron penghantar (STEM), spektroskopi Raman dan penduga empat titik dalam menentukan ciri-ciri arus-voltan dan kekonduksian sampel. Keupayaan permukaan (ΔV) juga turut dilakukan untuk menentukan keupayaan sampel dalam pengaliran elektron. Hasil ka.....

Thesis Published 2016 2621 hits Available

Conductivity comparison of Calix[8]arene-MWCNTs through spin coating technique

Supian Faridah Lisa, Kheng Darvina Lim Choo, Razal Amira Shakila,

Article Published 2017 1881 hits Limited

Raman, FTIR, UV-Visible and FESEM studies on Calix[8]arene embedded multi-walled Carbon Nanotubes Nanocomposites using spin coating technique

Amira Shakila Razali

Abstract

In this research, the preparation and characterization of the organic compound calix[8]arene (TBC8) are embedded with multi-walled carbon nanotubes (MWCNTs) using spin coating technique. The nanocomposites were prepared layer by layer, where TBC8 was dissolved in chloroform solution (0.2 mg/mL), followed by the additional layer of MWCNTs in the upper nanocomposites. We have explored the effects of TBC8 being modified with MWCNTs by Raman, where the crystallinities of the nanocomposites were observed. By Fourier Transform Infrared (FTIR) analysis, the nanocomposites' characteristic patterns have been detected. Ultraviolet-visible spectroscopy defines the fingerprints and the shifting of the nanocomposites while Field Emission Scanning Electron Microscope (FESEM) determines the structural morphology. The TBC8 attached to the MWCNTs has a future potential application for the development of the sensor in pollutant monitoring nano-electronics devices. ..

Article Published 2021 1339 hits Available

Virtual reality technology for elementary school students: A study of effectiveness in learning

Shakila binti Che Dahalan

Abstract

The problem and the aim of the study. The effectiveness of learning in elementary schools is still a major problem for teachers and students in learning activities. This is evidenced by the low interest in student learning which has an impact on students' lack of understanding of learning material. Teachers still find it difficult to find learning variations that can generate interest and experience student activities in learning. The authors propose virtual reality (VR) technology as a solution to increase student interest and learning experience in the hope that it can have a positive effect on student learning effectiveness. Research methods. This research was conducted using a quantitative approach with a One Group Pretest-Post-test design. The sample used in this study was elementary school students at the fifth-grade level. The sample selection was carried out using simple random sampling from a number of fifth grade students who were the research subjects. The specificity of the.....

Article Published 2023 809 hits Available

VideoScribes sparkol-based learning to improve learning outcomes: a classroom action research

Shakila Che Dahalan

Abstract

This study aims to improve student learning outcomes by applying VideoScribes Sparkol media. This study uses a type of classroom action research. This classroom action research went through two cycles in which the researcher acted as an observer. Each cycle consists of planning, implementing, observing and reflecting. The research subjects were Grade IV students. Data collection techniques are carried out by observation and learning achievement tests. Data were analyzed using descriptive analysis. The findings obtained in Cycle I indicate that the actions taken have not been successful. This is evidenced by the absorption of students who have not reached the expected completeness criteria. After reflection and implementation of Cycle II, the action shows an increase. This can be seen after the learning outcomes test shows that students absorption has reached the expected minimum mastery. Based on these findings it can be concluded that VideoScribes Sparkol media can improve student lea.....

Article Published 2023 638 hits Available

Analyzing the impact of augmented reality on student motivation: a time series study in elementary education

Shakila Che Dahalan

Abstract

Sub-optimal learning outcomes have been observed, often attributed to monotonous educational processes that struggle to retain students' focus and stimulate active participation. This study investigates the potential influence of Augmented Reality (AR) on student motivation, utilizing a time series analysis approach. The primary objectives include assessing the impact of AR on student learning outcomes and identifying the most suitable model for elucidating this relationship. The central research question is: can the implementation of AR enhance student motivation in elementary education? A time series design with a quantitative methodology was employed, involving a cohort of 29 fourth-grade students in Indonesia. Data collection was conducted through a Likert scale questionnaire. Four trend models were tested: the Linear Trend Model, Quadratic Trend Model, Growth Curve Model, and S-Curve Trend Model. The analysis of the collected data, tabulated and analyzed based on the established t.....

Article Published 2023 983 hits Available

Development of an e-module based on local wisdom ethnoastronomy in the digital era to strengthen the pedagogical competence of social studies teachers

Shakila Che Dahalan

Abstract

This research aims purposes to design and develop a digital-based e-module with ethnoastronomy content for junior high school students. We used a Design-Based Research (DBS) approach with four steps: needs analysis, design planning, development, and reflection on results of use. We used questionnaires, field notes, literature studies, and documentation for social studies teachers. The results showed that the preparation of e-modules refers to the applicable curriculum and pays attention to the analysis of learning needs. E-module design is very good as interactive teaching material, concrete, implementable, characteristic practical, and economical, making it easier for students to understand. The enthusiasm of social studies teachers in improving pedagogical technology competence following the demands of independent, adaptive, and contextual professional teacher competence supports the successful use of e-modules. The research implications increase the variety of interactive teaching m.....

Article Published 2024 323 hits Available

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