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All Journal Jurnal Riset Kimia Jurnal Pendidikan Kimia (JPKim) Jurnal Pembelajaran dan Biologi Nukleus Edukimia Gunung Djati Conference Series Jurnal Pendidikan Sains Indonesia (Indonesian Journal of Science Education)

Sri Adelila Sari*

(Scopus ID : 15835616000), Universitas Negeri Medan

Author-ID : 2513261

Religion Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Economics, Econometrics & Finance Education Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Other

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Articles

Pengembangan Metode Serbuk Daun Suji (Pleomele angustifolia N.E.Br) sebagai Identifikasi Sidik Jari Laten Sri Adelila Sari; Desi Heriyanti Nasution
Jurnal Riset Kimia Vol. 12 No. 2 (2021): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v12i2.406

Fingerprint is a technology that can be used to identify a person. The dusting method is most often used on latent fingerprints because it is relatively easy and simple. However, the composition of the ingredients used in latent fingerprint powder is toxic and can be hazardous to health. This research was carried out using a new natural powder from Suji leaf as a simple, non-toxic, and cheaper. Suji leaf powder produces a green color that comes from the chlorophyll compounds contained in it. This chlorophyll compound will bind to alanine to identify latent fingerprints. The particle sizes used in this study were of 60-200 mesh. The results found that the particle sizes of 100 and 200 mesh provided good green contrast and clear visualization of the fingerprint patterns. Meanwhile, at the particle size of 60 and 80 mesh, it was found that the results were not clear visualized. The highest percentage of fingerprint patterns based on blood group, gender and ethnicity was found in form of loops. The percentage of fingerprint patterns formed based on the highest was of O 31.1; B 12.2; AB 8.8; and A 6.6 percent. The highest percentage of fingerprint patterns formed by gender were of 45.5 for women and 13.3 percent for men. The highest percentage of fingerprint patterns formed by ethnicity were Malay 21.1, Batak 20, and Javanese 17.7 percent.

Pengembangan Praktikum Kimia Dasar berbasis Video pada Materi Sistem Periodik Unsur Zainuddin Muchtar; Siti Rahmah; Fauziyah Harahap; Catur Kurniawan; Nadya Ulfa; Fatayatul Hasniyah; Frandika Arif Chaniago; Mhd. Fadhillah; Junifa Layla Sihombing; Sri Adelila Sari; Moondra Zubir
Edukimia Vol 4, No 1 (2022): Edukimia - Vol. 04, Issue 01
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/ekj.v4.i1.a325

Technological developments change the researchers and educators thinking towards online learning. Various innovations were carried out to support effective online learning which suitable with the student competencies. As there is urgency for carrying practicum activities to achieved Course Learning Achievement (Capaian Pembelajaran Mata Kuliah (CPMK)) for the basic chemistry subject, there is need to make some innovation, which is by making practicum video. It could stimulate students critical thinking because it was presented with visual representations. It could overcome the limitations of space and time and could be used repeatedly. The research type was Research and Development with the Borg and Gall development model. The final product will be disseminated through YouTube platform which is integrated with sipda.unimed.ac.id. Validation results in media design and material aspect showed that the product was declared very valid with an average value of 86.87 percent and 97.92 percent, respectively. Meanwhile, the responses from 30 students showed that the product was very practical with an average score of more than 90 percent and was suitable with learning objectives of the basic chemistry course especially the periodic system of elements.

The implementation for natural science online lecture with chemistry education base at Nurul Fadhillah school Bandar Setia Zainuddin Muchtar; Sri Adelila Sari; Siti Rahmah; Moondra Zubir; Rini Selly; Marini Damanik
Jurnal Pendidikan Kimia (JPKim) Vol 13, No 1 (2021): April
Publisher : Pascasarjana Universitas Negeri Medan

The Covid-19 pandemic forces learning activities to change from classroom learning to online-based learning. Based on the results of the interview, it was found that the teachers at Nurul Fadhilah school did not yet have the readiness to manage online teaching and learning activities, especially in science subjects. The influencing factors are (1) understanding of basic science concepts (physics, chemistry, biology), (2) understanding of systematic online learning management and (3) mastery of Learning Management System (LMS) technology. Therefore, the aim of this activity is to implement LMS technology in the management of online science learning using a basic conceptual approach to chemistry education. LMS is a technology application developed specifically for managing classrooms, distributing learning materials and enabling collaboration between students and teachers online. The LMS used in this activity is Google Classroom. Based on the data, it is known that 65% of the teachers at Nurul Fadhilah School have not managed online science teaching and learning activities using LMS technology. The results of the systematic online science learning management workshop using the basic concepts of chemistry education and the implementation of LMS technology, especially Google Classroom, showed an increase, as many as 80% of teachers have created, designed and managed classes interactively using Google Classroom LMS technology and have integrated the concept of basic chemistry education in science learning. So that students are more happy and comfortable in learning online and are more disciplined in collecting assignments and teachers are more comfortable in managing and evaluating student assignments.Keywords: Natural science, Learning management system, Google classroom

Implementation of Independent Learning: Chemobio-Enterpreneurship in Junior High School Sri Adelila Sari; Ameilia Zuliyanti Siregar; Faidul Rasyid Hutabarat
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 9, No 1 (2023): Jurnal Pembelajaran Dan Biologi Nukleus March 2023
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v9i1.3778

In order to achieve learning objectives that can assist students in discovering and understanding chemical and biological concepts related to everyday life, an approach is needed that is able to make chemistry and biology material a very interesting and important subject to study and understand. The Chemo-Bio Entrepreneurship (CBEP) approach incorporates entrepreneurial values into learning according to the demands of independent learning. This is in response to the needs of the Industrial Revolution 4.0 era. The purpose of this research was to help motivate teachers and students to have an entrepreneurial spirit. In addition, learning chemistry and biology will be more fun and provide opportunities for students to optimize their potential to produce products. Thus, the economy of the school community can be developed, as a source of financial input for schools. The research samples were students and teachers of Junior High School 3 Tanjung Morawa 3, Deli Serdang which were taken using purposive sampling. The methods used were observation, interviews, Focus Group Discussion (FGD) and training in making compost and natural hand sanitizers. Data were analyzed using qualitative and quantitative descriptive statistics. The results showed that the understanding and skills of students and teachers before and after being given training in making compost and natural hand sanitizers were found to be increased. It was suggested to science teachers and school members to continue to practice good practices and be able to pass them on to teachers of other subjects. Thus, the productivity of teachers and students as entrepreneurs is well maintained

Development of Android Chemistry Comics as an Independent Learning Application to Improve Student Learning Outcomes Sri Adelila Sari*; Melysa Tioro Exaudie Lubis
Jurnal Pendidikan Sains Indonesia Vol 9, No 3 (2021): JULY 2021
Publisher : Universitas Syiah Kuala

Teachers often use printed book media in learning. Rarely do they want to develop and vary learning media with the aim of making the learning process more interesting. As a result, the lack of student interest in learning results in low student learning outcomes. This study was aimed to develop android chemistry comics (chemondro) on the material for the reaction rate of class XI IPA SMA N 1 Garoga. The method used is the ADDIE R D model, namely analysis, design, development, implementation, and evaluation. The analysis stage was carried out by analyzing the needs in the form of student characteristics and identifying learning media. The design stage included flowchart design and chemondro. The design results were then developed, then the application was given to the validator for a feasibility test. The implementation stage was carried out in class XI SMA N 1 Garoga. Furthermore, student learning outcomes were measured at the evaluation stage using tests. The results of this study found that chemondro-based chemical comics could be developed with the 3.6 eligibility criteria very well. The learning outcomes were found to be 81.91 in the experimental class compared to 71.76 in the control class. This study concluded that chemondro-were very suitable for use in chemistry learning, especially on the material of reaction rates and student learning outcomes were achieved with good criteria.

Development of Comic Based Learning on Reaction Rate for Learning to be More Interesting and Improving Student’s Learning Outcomes Sri Adelila Sari*; Nur Fatni Amirah Harahap
Jurnal Pendidikan Sains Indonesia Vol 9, No 1 (2021): JANUARY 2021
Publisher : Universitas Syiah Kuala

Teachers often use projector media in classroom learning. Rarely do they want to develop and vary learning media with the aim of making the learning process more interesting. Finally, the lack of student interest in reading textbooks results in low student learning outcomes, which are not the focus of teacher attention. This study was aimed to develop comic in the material on reaction rates. The method used was R D with ADDIE, namely analysis, design, development, implementation, and evaluation. The analysis stage was carried out by analyzing the needs in the form of student characteristics and identifying learning media. The media design stage included plot design, character design, and scenario creation. The design results were then developed at the development stage, then the comic was given to two validators to test their feasibility. The implementation phase was carried out at the XI IPA class XI IPA Senior High School LAB IKIP Al Washliyah Medan. Furthermore, student learning outcomes were measured at the evaluation stage using tests. The results of this study found that comic could be developed by meeting the eligibility criteria of 93.29 percent with very good criteria. Students were very enthusiastic about chemistry comic. Student learning outcomes obtained an average of 81.07, which means that the minimum completeness criteria value was 75. This study concludes that this chemistry comic learning media was very suitable for use in chemistry learning, especially in the material reaction rate and student learning outcomes were achieved good criteria.

Biosintesis Nanopartikel ZnO menggunakan Ekstrak Daun Betadin (Jatropha multifida L.) untuk Identifikasi Sidik Jari Laten SRI ADELILA SARI; MUHAMMAD RUDI AR; HANISAH HASIBUAN; NUR HARLIANDA; ELVI SAYANI
Gunung Djati Conference Series Vol. 34 (2023): Prosiding Seminar Nasional Kimia Tahun 2023
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Karena pentingnya penegakan hukum, identifikasi sidik jari laten adalah topik terbuka yang menarik lebih banyak perhatian. Kehadiran seseorang di Tempat Kejadian Perkara (TKP) dapat ditentukan melalui sidik jari laten. Sidik jari laten dapat memberi polisi informasi yang dapat membantu mereka menangkap penjahat. Banyak formulasi bubuk sidik jari yang berbeda telah digunakan secara luas selama ini, dengan masing-masing formula terdiri dari zat resin dan pewarna kontras. Metode yang paling banyak digunakan untuk pengembangan sidik jari laten di masa lalu adalah pencelupan perak nitrat, yodium asap, pencelupan ninhidrin, dan bubuk debu. Metode kuno ini bekerja dengan baik pada berbagai permukaan. Para ilmuwan telah bekerja untuk mengembangkan teknik yang lebih akurat untuk visualisasi cetakan laten karena metode konvensional untuk deteksi cetakan laten tidak selalu berhasil. Beberapa zat yang digunakan untuk membuat bubuk sidik jari beracun dan mungkin berbahaya bagi kesehatan manusia. Studi ini menawarkan cara penggunaan ZnO yang dikombinasikan dengan proses produksinya dan dimodifikasi dengan ekstrak daun betadin untuk menghasilkan zat bubuk sidik jari yang aman dan tidak beracun. Hasil penelitian ini menunjukkan bahwa ikatan Zn-O, gugus OH, gugus C-N, gugus C=O, serta adanya regangan N-O terdapat pada ekstrak daun betadin pada uji FTIR. Dengan demikian, maka temuan yang disajikan disini dapat menjadi titik awal untuk penyelidikan investigasi yang lebih canggih.

Synthesis of silver nanoparticles from coffee parasite leaf extract (Scurrulla ferruginea (Roxb. ex Jack) Danser) and potential activity as an antioxidant and anticancer Destria Roza; Tico Guinessha Samosir; Sri Adelila Sari; Rini Selly
Jurnal Pendidikan Kimia (JPKIM) Vol 16, No 1 (2024): April
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkim.v16i1.54145

This study aim is to know the results of the synthesis of silver nanoparticles from quercetin and Scurrula ferruginea (Roxb. Ex Jack) danser as well as its potential as an antioxidant and anticancer. The solvent used in the maceration extraction method in this research is the polar solvent methanol. Isolation and purification of thick extract compounds from coffee parasite leaves were carried out using liquid vacuum chromatography (CVC) and gravity column chromatography (GCC) methods. Silver (Ag) nanoparticle is made with the stirrer method at a speed of 1500 rpm for 60 minutes at a temperature of 70o C. Silver nanoparticle solution was produced and then characterized using FTIR (Fourier Transform Infra Red) and PSA (Particles Size Analyzer). PSA results analysis using extract coffee parasite size 214 nm particles, whereas using flavonoid isolate quercetin confirmed size 29 nm. FTIR showed that there was a stretching vibration of the OH group at a wave number of 3229.25 cm-1, the C=O function at the wave number 1637.87 cm-1, and the CO functional group at the wave number 1016.31 cm-1. Antioxidant test using the DPPH method was carried out in silver nanoparticle solution using extract Scurrula ferruginea (Roxb. Ex Jack) danser and with quercetin obtained an IC50 value of around 115.4 and 114.9 this result describes as moderate level of antioxidants. Even though the nanoparticle anticancer test was very weak, overall, the synthesis of silver nanoparticles using flavonoid isolates was better than using extracts from coffee parasite leaves.

Co-Authors Ameilia Zuliyanti Siregar Catur Kurniawan Desi Heriyanti Nasution Elvi Sayani Faidul Rasyid Hutabarat Fatayatul Hasniyah Fauziyah Harahap Frandika Arif Chaniago HANISAH HASIBUAN Junifa Layla Sihombing Marini Damanik Melysa Tioro Exaudie Lubis Mhd. Fadhillah Moondra Zubir Moondra Zubir MUHAMMAD RUDI AR Nadya Ulfa Nur Fatni Amirah Harahap NUR HARLIANDA Rini Selly Roza, Destria Siti Rahmah Siti Rahmah Tico Guinessha Samosir Zainuddin Muchtar

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