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All Journal Lisanuna: Jurnal Ilmu Bahasa Arab dan Pembelajarannya Jurnal Sains dan Teknologi Reaksi Afeksi: Jurnal Penelitian dan Evaluasi Pendidikan Jurnal Teknologi Jurnal Teknologi Kimia Unimal
Safitri, Aida
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Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Social Sciences Other

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لترقية قدرة الطلبة على مهارة الكلام TeamTeaching تطبيق أسلوب Safitri, Aida; Ninoersy, Tarmizi; Fajriah, Fajriah
لســـانـنــا (LISANUNA): Jurnal Ilmu Bahasa Arab dan Pembelajarannya Vol 11, No 2 (2021): لســـانـنــا (LISANUNA): Jurnal Ilmu Bahasa Arab dan Pembelajarannya (JULI-DESE
Publisher : Fakultas Tarbiyah dan keguruan- UIN Ar-Raniry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/ls.v11i2.11619

Abstract

According to the researcher’s on Arabic teaching conducted in the class X-l MAN 4 Pidie Jaya the students  were able to speak Arabic well. They perceived that speaking Arabic was difficult. In addition, the teachers who taught the Arabic did not use the appropriate  methods . As a result, the students were not engaged and felt bored during the teaching and learning process. The students were sleeping, playing and annoying their  friends. The team teaching method is a method to fix all problems that occur both sides in students and teachers in the learning process. The aim of this research is to investigate the effectiveness of using team teaching method in improving students’ speaking ability and to find out student’s responses  of using team teaching method in improving students’ speaking ability. The research method used was a pre experiment with one group pre test post test design. The research used pre-test and post test as well as ‘questionnaire as data collection instruments. The research found that the use of team teaching method was effective to increase students’ speaking ability.Furthermore, it was found that the result of T-Test calculation was bigger than T-Table 2,04<9,280<2,75. The result of student’s response sheets indicates that students have positive perception toward the use of team teaching method in speaking teaching. It was reflected in the student’s scrores in which 95,5% of them who interested in  the  teaching of speaking using team teaching method.
Keterampilan Membaca Generasi Alpha: Evaluasi Pembelajaran pada Siswa Kelas 2A SD Negeri 02 Indralaya Utara Safitri, Aida; Shaputra, Raul Rian; Prameswari, Ajeng Chandra; AR, Silvia
Afeksi: Jurnal Penelitian dan Evaluasi Pendidikan Vol 6, No 3 (2025)
Publisher : Pusat Studi Penelitian dan Evaluasi Pembelajaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59698/afeksi.v6i3.486

Abstract

Keterampilan membaca merupakan fondasi utama dalam proses belajar siswa, khususnya di jenjang sekolah dasar. Penelitian ini bertujuan untuk mendeskripsikan kemampuan membaca siswa kelas 2A di SD Negeri 02 Indralaya Utara dengan pendekatan kuantitatif deskriptif. Sebanyak 28 siswa menjadi subjek penelitian yang dievaluasi melalui instrumen observasi berdasarkan 4 aspek kemampuan membaca yaitu mengenal huruf, membaca kata, kelancaran membaca dengan suara nyaring serta pemahaman isi bacaan, dan menyimak atau memahami informasi yang didengar. Hasil analisis menunjukkan bahwa 86% siswa berada pada kategori keterampilan membaca tinggi, 14% berada pada kategori sedang, dan tidak ada siswa yang termasuk kategori rendah. Temuan ini menggambarkan bahwa sebagian besar siswa telah memiliki kemampuan membaca yang baik, yang kemungkinan besar dipengaruhi oleh strategi pembelajaran guru, keterlibatan orang tua dalam mendampingi anak belajar di rumah, serta lingkungan belajar yang kondusif. Penelitian ini juga menemukan kecenderungan perbedaan kemampuan membaca berdasarkan jenis kelamin, di mana siswa perempuan lebih dominan dalam kategori tinggi. Dengan hasil ini, penting bagi guru dan orang tua untuk berkolaborasi dalam menciptakan suasana belajar yang menyenangkan, variatif, dan sesuai dengan karakteristik siswa SD pada generasi Alpha yang lebih visual, aktif, dan cepat menyerap informasi.
Tailoring the Mechanical and Antimicrobial Properties of PLA Bioplastics Through Chitosan and Citronella Oil Additives Safitri, Aida; Raihan, Raudhatul
Jurnal Sains dan Teknologi Reaksi Vol 23, No 01 (2025): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v23i01.7400

Abstract

This study investigates the effect of varying chitosan concentrations on the mechanical properties of polylactic acid (PLA)-based films modified with citronella essential oil as an antimicrobial agent. Characterization results indicate that the incorporation of chitosan at 3–5 wt% relative to PLA enhances the tensile strength of the material. This improvement is attributed to the formation of intermolecular hydrogen bonds between the hydroxyl groups of chitosan and the ester groups of PLA, which strengthen the film structure. However, the addition of citronella essential oil to the system significantly reduces the tensile strength. This reduction is associated with the poor compatibility between the essential oil and the PLA–chitosan matrix. Scanning electron microscopy (SEM) analysis revealed the presence of oil droplet agglomerations within the matrix, acting as stress concentration points that weaken the film's mechanical integrity. Such phenomena have been widely reported in PLA-essential oil composite systems. Regarding antimicrobial activity, all films containing both chitosan and citronella oil exhibited significant inhibitory effects against Staphylococcus aureus (Gram-positive) and Escherichia coli (Gram-negative). This antimicrobial efficacy is attributed to a synergistic mechanism, involving the electrostatic disruption of bacterial cell membranes by chitosan and the cytotoxic effects of citronella constituents such as citronellal and geraniol, which penetrate and damage microbial cell walls. Key words: PLA, chitosan, citronella essential oil, Escherichia coli, Staphylococcus aureus.
PENGARUH MINYAK NILAM SEBAGAI AGEN AKTIF TERHADAP KARAKTERISTIK MEKANIK DAN ANTI BAKTERI DALAM PRODUKSI FILM KEMASAN Safitri, Aida; Raihan, Raudhatul
Jurnal Teknologi Kimia Unimal Vol. 14 No. 1 (2025): Jurnal Teknologi Kimia Unimal - May 2025
Publisher : Chemical Engineering Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/jtku.v14i1.24491

Abstract

Poli(asam laktat) (PLA) merupakan biopolimer yang banyak digunakan dalam pengembangan film kemasan ramah lingkungan, namun sifat mekaniknya yang kaku dan keterbatasan aktivitas fungsional membatasi penerapannya. Penelitian ini mengevaluasi pengaruh penambahan minyak atsiri nilam (Patchouli oil) sebagai agen aktif terhadap karakteristik mekanik, morfologi, serta aktivitas antibakteri film berbasis PLA. Film disiapkan dengan variasi konsentrasi minyak atsiri nilam (0.25–2% b/b) menggunakan metode hot press. Hasil uji mekanik menunjukkan bahwa penambahan minyak atsiri menurunkan kuat tarik dari 28 MPa pada PLA murni menjadi 13 MPa pada konsentrasi 2% (penurunan 54%), sementara elongation at break meningkat signifikan dari 10% menjadi 29% pada konsentrasi yang sama, mengindikasikan peran minyak atsiri sebagai plastisizer. Analisis morfologi melalui mikroskopi menunjukkan adanya dispersi minyak atsiri yang tidak homogen pada konsentrasi tinggi, yang memicu terbentuknya rongga dan menurunkan integritas mekanik. Uji antibakteri terhadap Staphylococcus aureus memperlihatkan zona hambat yang jelas pada film termodifikasi, menegaskan sifat antimikroba minyak nilam yang aktif dalam matriks PLA. Secara keseluruhan, penambahan minyak atsiri nilam tidak hanya meningkatkan fleksibilitas film, tetapi juga memberikan fungsi antibakteri yang relevan untuk memperpanjang umur simpan produk pangan
Removal of Artificial Rhodamine B Synthetic Dye Waste Using Magnetic Nanoparticle Adsorbents Irwan, Irwan; Mardani, Mardani; Sari, Husna; Safitri, Aida; Zaini, Halim
Jurnal Teknologi Vol 25, No 2 (2025): Agustus 2025
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v25i2.7397

Abstract

The use of synthetic dyes as dyes is increasing so that the waste is polluting the environment. One of the dangerous wastes that damages the environment and causes health problems is rhodamine B dye. The removal of rhodamine B dye is carried out by adsorption using an adsorbent that has been modified to provide magnetic properties. The aim of the research is to synthesize magnetic adsorbent nanoparticles using the co-precipitation method and use them to reduce the concentration of rhodamine B dye in artificial wastewater at various time variations. The study shows that magnetic nanoparticle adsorbents were successfully synthesized using the precipitation method. The adsorbent particles provide a magnetic effect on external magnetic forces, which shows that the adsorbent nanoparticles are magnetic. The application of magnetic adsorbent nanoparticles showed that the longer the adsorption time, the percentage of rhodamine B dye removal increased. The highest removal was obtained at 86% at an adsorption time of 90 minutes and an adsorbent mass of 4 g.
Pengaruh Laju Alir dan Material Pipa Bersambung pada SP-V PT X terhadap Analisis Profil Aliran Fluida dengan Metode Computational Fluid Dynamic (CFD) Raihan, Raudhatul; Irwan, Irwan; Safitri, Aida
Jurnal Teknologi Vol 25, No 2 (2025): Agustus 2025
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v25i2.6727

Abstract

Piping system is a system that is widely used to move fluids, either liquid, gas, or a mixture of liquid and gas from one place to another, pipes have various sizes and cross-sectional shapes. Pipe branching is widely used in piping systems in industry, mining, and drinking water distribution. Fluid flow profiles and Pressure drop in pipes are very important to know in order to design piping systems. This study was conducted with the aim of determining through simulation the factors that influence the fluid flow profile and pressure drop in the PT X connected pipe with the help of the Computational Fluid Dynamics (CFD) application. The software used in this study is Autodesk Inventor, Autodesk Simulation CFD. the largest pressure drop occurs in the API 5L CS Grade B sch 80 pipe material with 150 L/hour of 14.2467 Psi. while the lowest pressure drop occurs in the API 5L CS Grade B sch 40 pipe material with 70 L/hour of 11.3882 Psi, this is in accordance with the theory that explains that the smaller the diameter of a pipe, the greater the pressure drop will be, due to the difference in inner diameter between the API 5L CS Grade B sch 40 and sch 80 pipe materials. While the largest Power Density occurs in the API 5L CS Grade B sch 40 pipe material with a pipe inner diameter of 6.065 inches of 98969.15297 W/m3. While the lowest Power Density occurs in the API 5L CS Grade B sch 80 pipe material with a pipe inner diameter of 5.6377 inches of 64404.690385 W/m3.
NOVELTY DESIGNED HYBRID ORGANIC-INORGANIC NANOCOMPOSITES FROM FUNCTIONAL PALM OIL Suryani, S; Safitri, Aida
Jurnal Sains dan Teknologi Reaksi Vol 22, No 02 (2024): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v22i02.6346

Abstract

ABSTRACT Polyurethanes (PUs) are very versatile polymeric materials with a wide range of physical and chemical properties. PUs also have desirable properties such as high abrasion resistance, tear strength, shock absorption, flexibility and elasticity. Although they have poor thermal stability that however can be improved by using treated clay. The objective of the present work is to study the thermal stability of polyurethane, polyurethane/montmorillonite (PU CTAB-mont 3% wt) and polyurethane/montmorillonite that contain moca nanocomposites are based on palm oil polyol. The interest of investigating the synthesis of polyurethane/clay nanocomposites based on palm oil polyol is to explore the use of palm oil polyol to replace petrochemical based polyol partially. Polyurethane/clay nanocomposites were prepared by a pre-polymer method and were evaluated by fourier transform infrared spectra (FTIR) to determine micro-domain structures of segmented PU, PU CTAB-mont 3% wt, and PU Moca CTAB-mont 3% wt. The morphology of the nanocomposites were characterized by X-ray diffraction (X-RD) and flame retardant was investigated with thermogravimetric analysis (TGA). The result showed that adding clay and moca demonstrated better thermal stability in comparison with the virgin polyurethane. Keywords: Nanocomposite, polyurethane, synthesis, palm oil polyol
PERANAN SERBUK BENTONIT TERHADAP SIFAT MEKANIS DARI KOMPOSIT RESIN POLIESTER BQTN 157-EX Safitri, Aida
Jurnal Sains dan Teknologi Reaksi Vol 22, No 02 (2024): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v22i02.6362

Abstract

ABSTRAK Komposit merupakan campuran bahan-bahan yang berbeda atau telah menghasilkan sifat dan karakterisasi yang lebih banyak, tidak dihasilkan pada bahan utama. Resin poliester BQTN 157-EX merupakan bagian dominan (mayor) pada komposit yang berfungsi sebagai matriks dan bentonit merupakan bagian tidak dominan (minor) pada komposit yang berfungsi sebagai filler. Telah dilakukan penelitian pertama terhadap olahan bentonit yang bersumber dari bahan anorganik dan sifat hidrofilik. Pemeriksaan ini dilakukan dengan menggunakan alat kekuatan tarik. Hasil penelitian menunjukkan, pada nanokomposit 3,5%, massa bentonit dan ukuran partikel 300 mesh menghasilkan kuat tarik sebesar 197,57 Mpa, elongasi sebesar 24% dan Impact 0,80 Joule. Hal ini lebih baik jika dibandingkan dengan resin virgin polyester yang menghasilkan kekuatan tarik 104,92 Mpa, elongasi 13,32% dan Impact 0,21 Joule.Kata Kunci : Poliester BQTN 157-EX, Komposit, Sifat Mekanik
Co-Authors AR, Silvia Fajriah Fajriah, Fajriah Halim Zaini, Halim Irwan Irwan Mardani Mardani Prameswari, Ajeng Chandra Raihan, Raudhatul Sari, Husna Shaputra, Raul Rian Suryani, S Tarmizi Ninoersy