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All Journal Jurnal Pendidikan Vokasi Jurnal Penelitian Saintek JURNAL KIMIA SAINS DAN APLIKASI LingTera Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Pendidikan Kimia (JPKim) Indonesian Journal of Chemistry Jurnal Pengabdian Masyarakat MIPA dan Pendidikan MIPA Jurnal Farmasi Indonesia Molekul: Jurnal Ilmiah Kimia Indonesian Journal of Chemistry and Environment
Sri Handayani
Universitas Negeri Yogyakarta
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Education Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Medicine & Pharmacology Physics

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Synthesis of ZnO Nanoparticles from Zink Acetate using Red Betel and Bay Leaves Extract and It’s Application as Sunscreen Karim Theresih; Cornelia Budimarwanti; Indyah Sulistyo Arty; Sri Handayani; Novia Putri Ramadhani; Rakhmawati Kurniasih
Indonesian Journal of Chemistry and Environment Vol 4, No 1 (2021): JUNE 2021
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (567.186 KB) | DOI: 10.21831/ijoce.v4i1.45299

Abstract

The ZnO nanoparticles have been synthesized using red betel and bay leaves extract and characterized to analyze the maximum wavelength, crystallinity, particle size, composition, and its activity as sunscreen. The synthesis of ZnO nanoparticles was carried out through reflux method using Zn(CH3COO)2. 2H2O red betel leaf as bioreductor. The same procedure was also applied by changing the betel leaf extract with bay leaf extract. The resulted materials were characterized by UV-Vis spectrophotometry, FTIR, PSA, XRD, and SEM EDX. The ZnO nanoparticles synthesized with red betel leaf have a maximum wavelength of 374.5 nm, wave number of 462.92 cm-1, particle size of 23.309 nm, 74.1% of Zn and 16% of O, SPF value of 8.047942. ZnO nanoparticles synthesized using bay leaf extract have a maximum wavelength of 374 nm, high crystallinity properties with a hexagonal crystal structure, an average particle size of 2.463 nm, 64.21% of Zn and 22.85%, and an SPF value of 2.886969. The activity test of ZnO nanoparticles as sunscreen showed that synthesis both using red betel and by leaves extract resulted in a good sunscreen activity test comparing with ZnO synthesized using ethanol as a control. Thus the synthesis of ZnO nanoparticles using natural extract is being a better way to use as a green synthesis that environmentally friendly.
Peningkatan Minat Wirausaha Masyarakat melalui Pembuatan Sabun Scrub Alami dari Ampas Kopi Sri Handayani; Antuni Wiyarsi; Nur Fitriyana; Metridewi Primastuti; Erfan Priyambodo
Jurnal Pengabdian Masyarakat MIPA dan Pendidikan MIPA Vol 6, No 2 (2022): Vol 6, No 2 (2022)
Publisher : Yogyakarta State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (270.643 KB) | DOI: 10.21831/jpmmp.v6i2.49860

Abstract

Kegiatan pengabdian pada masyarakat (PPM) bertujuan untuk: (1) meningkatkan pengetahuan masyarakat Seyegan tentang bahan dan manfaat sabun scrub alami dari ampas kopi, (2) meningkatkan ketrampilan masyarakat dalam pemanfaatan teknologi tepat guna pembuatan sabun scrub alami dari ampas kopi, dan (3) memotivasi minat wirausaha masyarakat Seyegan. Kegiatan PPM ini bersifat pelatihan dan dilaksanakan dengan metode ceramah, diskusi dan praktik. Melalui kegiatan tersebut, peserta telah mendapat materi tentang: (1) pembuatan sabun scrub alami dari ampas kopi, (2) kandungan dan manfaat kopi untuk kesehatan kulit, (3) sabun yang aman untuk kesehatan kulit, (4) peluang wirausaha sabun kopi, dan (5) pewarna dan pewangi yang bersifat skin grade. Peserta yang telah mengikuti pelatihan ini berjumlah 11 orang yang merupakan masyarakat di daerah Padukuhan Kamal Wetan, Mangsel VII, Margomulyo, Seyegan. Evaluasi kegiatan PPM dilakukan dalam 2 tahapan, yaitu evaluasi proses melalui observasi selama kegiatan PPM dan evaluasi hasil melalui produk sabun yang dihasilkan serta isian angket kegiatan PPM. Melalui kegiatan ini, dapat disimpulkan bahwa peserta pelatihan telah memperoleh (1) manfaat tentang bahan dan sabun alami dari ampas kopi, (2) pengetahuan dan keterampilan dalam pemanfaatan teknologi tepat guna pembuatan sabun scrub alami dari ampas kopi, namun motivasi dan minat wirausaha peserta pelatihan untuk membuat sabun scrub ampas kopi masih perlu untuk ditingkatkan.
Production, Quality Test, and Activity Evaluation of Methanol Extract and Nanoparticles from Pluchea indica (L.) Leaves as Additives in Natural Soap against Propionibacterium acnes Arsya Cahya Saputra; Elang Seta Wiratama; Fiyola Mayangsari; Via Divinka Oktafinantyas; Sri Handayani
Jurnal Kimia Sains dan Aplikasi Vol 27, No 2 (2024): Volume 27 Issue 2 Year 2024
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jksa.27.2.91-100

Abstract

Pluchea indica (L.) leaves, both in the form of extracts and silver nanoparticles, are known to exhibit antibacterial activity, but they have not been widely utilized in the health sector, especially in dermatology. This study aims to determine the quality test and antibacterial evaluation of natural soap formulated with methanol extract and nanoparticles of Pluchea indica (L.) leaves against Propionibacterium acnes. The synthesis of silver nanoparticles (AgNPs) was conducted using the reduction method, with AgNO3 as a precursor and methanol extract of Pluchea indica (L.) leaves serving as a reducing agent or bioreductor. Natural soap was produced through the cold process method, with a curing period of 3 to 4 weeks. Natural soap, derived from herbal ingredients, was made by combining NaOH, essential oils, and additives such as methanol extract and silver nanoparticles from Pluchea indica (L.) leaves. Quality tests were performed to assess moisture content (MC), fatty acid content, and pH levels. Antibacterial activity was assessed utilizing the well-diffusion method, with various sample concentrations ranging from 1.0 g/mL to 0.0625 g/mL. The quality test results for all soap samples met the Indonesian National Standard (SNI) requirements for acidity, free fatty acids, and moisture content. The bar soap without additives exhibited antibacterial activity, with a maximum inhibition zone of 14.26 mm (at 0.25 g/mL) after 15 hours. Natural soap with methanol extract of Pluchea indica (L.) leaf demonstrated an inhibition zone of 11.49 mm (at 0.0625 g/mL) after 15 hours, while nanoparticle soap exhibited an inhibition zone of 12.77 mm (at 0.25 g/mL) after 12 hours. In summary, all soap samples showed antibacterial activity, indicating the potential of Pluchea indica (L.) leaves as effective antibacterial agents.
A systematic review: How to implementation of problem solving model in chemistry learning? Ayar Sakinah; Sri Handayani
Jurnal Pendidikan Kimia 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.v16i1.54996

Abstract

Chemistry is one of the difficult subjects at all levels of education, this is what makes it difficult for students to solve problems so that student learning outcomes decrease. The things that cause chemistry learning problems are influenced by monotonous learning process activities, the application of less innovative learning models and methods that have a negative impact on students' ability to understand chemical concepts. This research aims to find out the implementation of problem solving in chemistry learning. This research method uses a systematic literature review (SLR) by analyzing previous research using the Google Scholar and Scopus databases in the last 10 years, namely 2014-2022. The 14 articles reviewed were obtained after going through the scanning process according to the inclusion criteria. The results of this study indicate that in chemistry learning it is necessary to improve problem solving in chemistry learning.
Pengembangan LKPD elektronik berbasis multipel representasi untuk peserta didik SMA pada materi larutan penyangga Tengku Afdhaluz Zikri; Sri Handayani
Jurnal Penelitian Pendidikan IPA Vol 10 No 5 (2024): May
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i5.5247

Abstract

The objective of this study is to develop an electronic student worksheet that utilizes multiple representations for high school students studying buffer solutions. This electronic student worksheet was created using the 4D development methodology, which encompasses the following stages: Define, Design, Develop, and Disseminate. The electronic worksheets underwent a validation process conducted by an expert validator. Field trials have been conducted and revised by developers, resulting in a valid and practical electronic student worksheet. The research outcomes indicate that the validity assessment by material and media validators falls under the category of highly valid. The practicality test conducted on six chemistry teachers from several high schools in Pekanbaru is categorized as highly practical. The small-group trial conducted with six 12th-grade science students from SMAN 5 Pekanbaru has been categorized as highly practical. Field trial on 30 12th-grade science students from SMAN 5 Pekanbaru resulted in the category of being highly practical. The conclusion drawn is that the electronic student worksheets based on multiple representations developed with a 4-D model is valid, practical, and it can be used in chemistry education at schools.
Competencies of Chemistry Teachers and Prospective Teachers: A Literature Review Alessandro Jeremi Manarisip; Rabiatul Adawiyah; Sri Handayani
Jurnal Penelitian Pendidikan IPA Vol 9 No SpecialIssue (2023): UNRAM journals and research based on science education, science applic
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9iSpecialIssue.6031

Abstract

The role and function of teachers as professionals is to implement the national education system and realize national education goals, which is to develop the potential of students. Therefore, the competence and professional development of teachers must be in line with the way they carry out learning, especially in chemistry subjects. Where this subject is one of the subjects that most students are less interested in. The focus of this research is to collect information about the outcome of research that discusses the competence of chemistry teachers and prospective teachers, the research design uses a literature review with a qualitative descriptive approach. Reviewed 3 selected journals registered in Science and Technology Index (SINTA), and 17 SCOPUS indexed international journals. The collection of articles starts from 2016 to 2023. The most frequently used research type is qualitative with a case study research type, the most frequently used data collection instrument is observation with triangulation techniques.  Chemistry teacher competencies needed at this time are PCK, CK, AK, PCK_CCC, TPASK, topic-specific PCK (TSPCK), argumentation, laboratory skill competence, technological knowledge, professional competence, and competence in organizing lesson study
Kajian perolehan kompetensi keahlian busana butik siswa SMK: studi kasus prakerin di industri pasangan Sri Handayani; Sri Wening
Jurnal Pendidikan Vokasi Vol 6, No 1 (2016): Februari
Publisher : ADGVI & Graduate School of Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (631.061 KB) | DOI: 10.21831/jpv.v6i1.8116

Abstract

Penelitian ini bertujuan untuk mengetahui perolehan kompetensi siswa di setiap DUDI, khususnya busana butik yang memiliki pola pembimbingan berbeda. Penelitian ini menggunakan jenis penelitian studi kasus pendekatan kualitatif. Teknik penentuan Informan menggunakan snowball sampling yaitu instruktur industri, pembimbing, dan siswa SMK N 1 Pengasih yang sedang prakerin. Pengumpulan data menggunakan wawancara, observasi dan dokumentasi. Teknik analisis data mengacu pada analisis model interaktif Miles Huberman, meliputi pengumpulan data, data condensation, penyajian data, dan deskripsi serta verifikasi kesimpulan. Hasil penelitian adalah (1) praktik yang dijalani siswa sudah relevan dengan kurikulum yang tercantum di sekolah; (2) perolehan kompetensi pada aspek kognitif siswa memperoleh pengetahuan tentang prosedur pembuatan busana butik, pada aspek afektif terbentuk sikap budaya kerja, dan pada aspek psikomotor mampu menyelesaikan pekerjaan busana butik; (3) cara siswa memperoleh kompetensi dengan melakukan: (a) komunikasi; (b) teknik belajar (c) metode kerja praktis; (d) pekerjaan secara mandiri; (e) tindakan dengan tanggung jawab; (f) etos kerja; (g) pengorganisasian dan implementasi kerja dengan baik; (h) bekerja sesuai kepercayaan instruktur industri; (i) pengembangan diri; dan (j) penerapan kompetensi dari sekolah; (4) pencapaian kompetensi siswa yang prakerin di Goet Poespo dan Puspa Rini berada pada level Pemula (novices) sedangkan di L’Mar butik pada level spesialist. A STUDY ON COMPETENCE EXPERTISE ACHIEVEMENT OF BOUTIQUE CLOTHING FOR VOCATIONAL STUDENTS: A CASE STUDYOF INDUSTRY WORK PRACTICE IN PARTNER INDUSTRYAbstractThis research aimed to determine the competence of the students in each “DUDI”, especially in fashion boutiques that had different patterns of coaching. The research used a qualitative case study approach. A snowball sampling technique was used to select informants which consisted of the industrial mentors, the school mentor, and students. who were on industry work practice. The data were collected through interviews, and documentation. The data analysis technique refered to the analysis of Miles Huberman interactive model, including data collection, data condensation, data display, and drawing and verifying conclusions. The result were (1) the practice done by the students was relevant with the curriculum written in the school; (2) in the competence achievement of cognitive aspect the student got the knowledge of boutique dressmaking procedures, in affective aspect, there was a development of work culture attitudes and in the psychomotor aspects, they were able to finish boutique clothes work; (3) the ways of achieving the competence were through: (a) communication, (b) learning techniques, (c)methods, (d) working independently, (e) acting with responsibility, (f) adhering to work ethics, (g) good organization and implementation, (h) working in line with the trust given by the industry instructor, (i)self-development, (j) applying the school competencies; (4) the competence achievement of the students who did industry work practice in Goet Poespo and Puspa Rini was at the novice level, while the ones in L’Mar boutique were at the specialist level.
Pengaruh Pembelajaran Inkuiri Terbimbing Berkonteks Socio-Scientific Issues (SSI) terhadap Literasi Kimia dan Kesadaran Lingkungan Siswa pada Materi Laju Reaksi Muhammad Hisyam; Sri Handayani
Jurnal Penelitian Pendidikan IPA Vol 10 No 8 (2024): August
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i8.7369

Abstract

This research aims to determine the influence of guided inquiry learning contextualized with SSI on students' chemistry literacy and environmental awareness. This research is a quasi-experimental research with a non-equivalent (pre-test and post-test) control-group design. This research was conducted at SMA N 111 Jakarta and SMA N 41 Jakarta. The research sample consisted of 132 eleventh-grade students. The sampling technique used was cluster random sampling. The instruments used in this study consisted of a chemistry literacy test and an environmental awareness questionnaire. The data analysis technique used is multivariate statistics, specifically employing the MANOVA test. The research findings indicate that there are significant differences in students' chemical literacy and environmental awareness when implementing the guided inquiry learning contextualized with SSI. Overall, the impact of guided inquiry learning contextualized with SSI provides an effective contribution of 24.4% to students' chemical literacy and environmental awareness.
The Effect of the Problem Based Learning Model on Students' Problem-Solving Ability and Scientific Attitude Sri Handayani; Suyanta Suyanta
Jurnal Penelitian Pendidikan IPA Vol 10 No 8 (2024): August
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i8.8191

Abstract

This study aims to analyze significant differences in problem-solving skills and scientific attitudes between students who learn using the Problem Based Learning model and students who learn using the Discovery Learning model and determine the effective contribution of learning using the PBL model developed to students' problem-solving skills and scientific attitudes simultaneously. This research approach uses a quantitative research approach with a quasi-experimental method. The research population is 5 classes of students in grade XI MIPA Malinau for the 2023/2024 academic year. The sample was determined by random sampling technique against the class. Based on the random results, class XI MIPA1 was selected as a group of students using the Problem Based Learning learning model and class XI Mipa 3 using the Discovery Learning learning model. Data on problem-solving ability were collected by tests, while scientific attitudes were collected by questionnaires. The data was analyzed by One way Multivariate. The results of the study showed that: (1) there was a significant difference in problem-solving ability and scientific attitude between students who learned with the Problem Based Learning model and students who learned with  the Discovery Learning model; (2) the effective contribution of learning using the PBL model to problem-solving ability and scientific attitude simultaneously was 0.46 or 46.1%.
Bibliometric analysis : Green chemistry trends and issues in chemistry education from 2019 to 2024 Wanda Setya Hanifa; Sri Handayani; Suyanta Suyanta
Jurnal Pendidikan Kimia Vol. 16 No. 2 (2024): August
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkim.v16i2.58875

Abstract

This study analyzes green chemistry research trends in chemistry education. This study used a quantitative bibliometric approach. The number of publications analyzed is 104 publication documents from 2019 “ 2024. This research collects, processes, and filters information in Scopus journals and articles. Metadata results show that the distribution of publication frequency peaked in 2019, with 26 documents identified. The green chemistry research area is dominated by chemistry research (31.3%). The country with the most documents and the most productive in publishing green chemistry is the United States, with 30 papers identified. At the same time, Indonesia is ranked fifth as the most productive country in publishing green chemistry, with 10 documents identified. Canada ranked second with 17 papers, and Germany ranked third with 15 documents. The institutions that contributed the most came from Germany: the University of Bremen, with 11 papers 10.58%, and the University of Toronto with 8 documents (7.69%). The authors with the most citations are Chen Tse-Lun et al., with 245 citations. Meanwhile, when viewed from the number of documents published by the author, Eilks I. has 11 papers with a contribution of 4.91%. There are 5 clusters with the most popping keywords: green chemistry, human, and chemical reaction. Research and publications on this topic have been sparse in the past five years. Surveys and analyses of green chemistry literature are essential because tracking research trends in green chemistry in chemistry education is vital to directing the future.
Co-Authors Alessandro Jeremi Manarisip Antuni Wiyarsi Aris Tiana Anjali Arsya Cahya Saputra Ayar Sakinah C Budimarwanti Cornelia Budimarwanti Elang Seta Wiratama Elga Riesta Puteri Erfan Priyambodo Evy Yulianti Fiyola Mayangsari Indyah Sulistyo Arty Indyah Sulistyo Arty Karim Theresih Karim Theresih Mary Garson Melati Khairuddean Metridewi Primastuti Muhammad Hisyam Novia Putri Ramadhani Nur Fitriyana Nurul Khotimah Putri Pertiwi Rabiatul Adawiyah Rakhmawati Kurniasih Retno Arianingrum Rudyansah Rudyansah Sri Atun Sri Wening SUHARDI - Sunarto Sunarto Sunarto, Sunarto, Susila Kristianingrum Suyanta Suyanta Tengku Afdhaluz Zikri Via Divinka Oktafinantyas Wanda Setya Hanifa Winarto Haryadi Winarto Haryadi