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All Journal Jurnal Dikdas Jurnal Kreatif Tadulako Online Kreatif agriTECH Unnes Science Education Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Akademika Kimia Chimica et Natura Acta Indonesian Journal of Chemistry JANGKA Husada Mahakam: Jurnal Kesehatan Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Jurnal Pendidikan Guru (JPG) Panrannuangku Jurnal Pengabdian Masyarakat Journal for Lesson and Learning Studies Jurnal Kajian Pariwisata Media Eksakta Jurnal Akademika Kimia Mahakam Nursing Journal (MNJ) Jurnal Cendekia Ihya Mitra Sains Jurnal Akademika Kimia
Siti Nuryanti
Department Of Chemistry, Faculty Of Teacher Training And Education, Tadulako University, Jln. Soekarno-Hatta Km 8, Palu
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Education Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Analysis of Flavonoid Levels in Tin (Ficus carica Linn) Fruit Rahmasita Rahmasita; Siti Nuryanti; Supriadi Supriadi
Jurnal Akademika Kimia Vol. 10 No. 1 (2021)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2021.v10.i1.pp32-35

Abstract

Tin fruit is an essential source of bioactive components such as phenol, benzaldehyde, and flavonoids due to the antioxidant properties. Analysis of flavonoid levels on Tin (Ficus carica Linn) fruit was carried out using Uv-Vis spectrophotometry. This study aimed to determine the total flavonoid levels found in Tin (Ficus carica Linn) fruit with a variety of samples of raw, half-ripe, and riped. Extraction of chemical content in Tin (Ficus carica Linn) was carried out by maceration method with ethanol 70%. Total flavonoid levels of the extracts sample were determined through absorption measurements at a wavelength of 520 nm and 700 nm. The results showed that total flavonoid levels in raw, half-ripe, and ripe fruits are 5.778 × 103, 3.056 × 103, and 3.707 × 103 mg/L, respectively, or equivalent to 17334 × 103, 9.168 × 103, and 11.121 × 103 mg/100g, respectively.
Co-pigmentation of Anthocyanin Jamblang Fruit (Syzygium cumini) with Acetic Acid and Alum Chintia N. Barani; Siti Nuryanti; Paulus H. Abram
Jurnal Akademika Kimia Vol. 10 No. 4 (2021)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2021.v10.i4.pp237-246

Abstract

This study aimed to determine the effect of temperature on the stability of anthocyanin jamblang after co-pigmentation with acetic acid and alum. The extraction of Jamblang fruit used the maceration method with n-hexane, ethyl acetate, and ethanol-HCl 0.5% solvents. The total anthocyanin obtained was 70.64 mg/L. Anthocyanin of jamblang fruit was co-pigmented with acetic acid and alum in a concentration of 2.5%; 5%; 7.5%; and 10%, then be heated at various temperatures and heating times. At a temperature of 80 ℃ for 150 minutes, every 30 minutes, absorbance was measured. At a temperature of 60 ℃, the heating was carried out for 225 minutes, and every 45 minutes, absorbance was measured. At a temperature of 40 ℃, the heating was carried out for 300 minutes, and every 60 minutes, absorbance was measured. Absorbance measurements were taken using a UV-VIS spectrophotometer. The results showed that co-pigmentation of anthocyanin occurred proved by shifting λ max from 470 nm (unco-pigmented extract) to 500 nm (co-pigmented extract acetic acid) and 540 nm (co-pigmented extract alum). Acetic acid and alum co-pigments maintained the stability of anthocyanin jamblang at a heating temperature of 60 ℃. It can be seen from decreased absorbance, which is not so significant compared to the decrease at temperatures of 40 and 80 ℃, accompanied by anthocyanin's fading color, which is co-pigmented with acetic acid and alum during the heating process.
Study of Conceptual Change in Chemistry for Class XI Science High School Students Hartarti Uminah; Ijirana Ijirana; Siti Nuryanti
Jurnal Akademika Kimia Vol. 11 No. 2 (2022)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2022.v11.i2.pp77-82

Abstract

Varied initial concepts can be an obstacle or support in understanding a new concept. The study of changes in students' chemical concepts was carried out on thermochemical material. This study aimed to examine changes in students' thermochemical concepts in each subject of high, medium, and low ability. Qualitative descriptive research with mixed methods was conducted on SMAN 1 Bumi Raya Morowali, Central Sulawesi students. The study began by giving an initial test to all students of class XI IPA 1 and 2, as many as 60 students, to obtain initial concept data and the basis for grouping subjects on each ability criterion (high, medium, and low). Every two people from each ability group in semi-structured interviews. Thermochemical material is re-taught using a metacognitive skill learning model and given a final test and interview to get concept data after learning to assess conceptual changes. Five concepts become variables in this study: the heat of reaction, enthalpy of reaction in a calorimeter, Hess's law, energy diagrams, and bond energies. The results showed that concept changes occurred in all high, medium, and low ability subjects. Changes in students' conceptions occurred in the concepts of the heat of reaction, reaction enthalpy, calorimeter, Hess's law, energy diagrams, and bond energy. The most significant conceptual change occurred in the subject of medium ability and low ability, namely the concept of bond energy.
Service Excellence dan Servicescape: Faktor Dominan Dalam Menciptakan Kepuasan Tamu Hotel Amran, Ali; Restiani Widjaja, Yani; Nuryanti, Siti
Jurnal Kajian Pariwisata Vol 1 No 1 (2019): Jurnal Kajian Pariwisata
Publisher : LPPM STP ARS Internasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51977/jiip.v1i1.135

Abstract

ABSTRAK Service excellence dan servicescape merupakan dua hal penting yang dapat mempengaruhi kepuasan tamu hotel. Tujuan penelitian ini adalah untuk mengetahui pengaruh service excellence dan servicescape terhadap customer satisfaction tamu hotel. Metode yang digunakan dalam penelitian ini adalah metode survey dengan mengambil objek penelitian 96 tamu yang menginap di hotel Villa Lemon Lembang Jawa Barat. Penentuan responden diambil menggunakan metode non probability sampling dengan teknik Accidental sampling. Jenis penelitian ini yaitu penelitian deskriptif verifikatif menggunakan analisis regresi berganda. Penelitian ini menunjukkan hasil bahwa tingkat service excellence sangat tinggi, sedangkan tingkat servicescape dan customer satisfaction tinggi. Pengujian hipotesis menunjukkan bahwa service excellence berpengaruh signifikan terhadap customer satisfaction secara parsial dan servicescape berpengaruh signifikan terhadap customer satisfaction secara parsial. Sedangkan secara simultan service excellence dan servicescape berpengaruh terhadap customer satisfaction. Antara variabel service excellence dan servicescape, variabel yang paling dominan mempengaruhi customer satisfaction yaitu service excellence. Manfaat penelitian ini bagi pelaku wisata hotel yaitu dengan menyadari bahwa service excellence dan servicescape sangat penting dalam meningkatkan kepuasan tamu hotel. Kata kunci: service excellence, servicescape dan customer satisfaction
Generic Science Skills Profile of High School Students in Working on Chemistry Questions Based on Gender Mustapa, Kasmudin; Nuryanti, Siti; Al Gifary, Muhammad
Journal for Lesson and Learning Studies Vol. 6 No. 3 (2023): October
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jlls.v6i3.60966

Abstract

The exploration of generic science skills in solving chemistry problems can be influenced by various factors, one of which is gender bias in the learning process. This research aims to measure students' generic skills in solving chemistry problems based on gender. This study is quantitative descriptive research with a pre-experimental method using a One-Shot Case Study design. The sample consists of 20 eleventh-grade students, with 10 male students and 10 female students, selected based on gender and the taught material. Data collection techniques include measurement techniques, observation techniques, and interview techniques. The data analysis technique used is quantitative descriptive analysis. The results of the research show difference in the scores of generic science skills between female and male students. Female students have higher scores in direct observation indicators (80 vs. 79) and logical inference (83 vs. 79). However, there is no significant difference in the cause-and-effect law indicator (74 vs. 74). Meanwhile, male students have a slight advantage in the abstraction indicator (67 vs. 66) and concept building (76 vs. 74). Of the five indicators examined in the form of tests, the abstraction indicator obtains the lowest score, while the highest score is in the logical inference indicator. From these results, there is no significant difference in the generic science skills of male and female students.
EFEKTIVITAS PROGRAM MENTORING TERHADAP PEMBENTUKAN KARAKTER PESERTA DIDIK PUTRI DI SMAN 1 TAMANSARI BOGOR Nuryanti, Siti; Nurhasan, Abdul Kodir; Robiansyah, Yal; Putri Pratiwi, Tia
Jurnal Cendekia Ihya Vol 2 No 2 (2024): Jurnal Cendekia Ihya
Publisher : Sekolah Tinggi Ilmu Tarbiyah Insan Kamil Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62419/jci.v2i2.68

Abstract

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Pengembangan Modul PAI Materi Fikih pada Pendidikan Kesetaraan Paket B Siti Nuryanti; Nesia Andriana; Nirwan Syafrin
JPG: Jurnal Pendidikan Guru Vol. 6 No. 1 (2025): JPG: Jurnal Pendidikan Guru
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Ibn Khaldun Bogor

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

Abstract

Pendidikan Kesetaraan di Indonesia berperan penting dalam menyediakan akses pendidikan bagi berbagai kelompok usia, namun menghadapi tantangan utama berupa kurang relevannya materi ajar dengan kebutuhan siswa yang beragam usianya. Penelitian ini bertujuan mengembangkan modul Pendidikan Agama Islam (PAI) materi fikih untuk Pendidikan Kesetaraan Paket B, yang lebih relevan dengan kebutuhan siswa yang beragam usianya. Menggunakan model pengembangan ADDIE, penelitian ini melalui tahap analisis, desain, pengembangan, implementasi, dan evaluasi untuk menghasilkan modul yang sesuai dengan kondisi lapangan. Hasil uji kelayakan menunjukkan bahwa modul ini sangat efektif dengan penilaian rata-rata 85%, sehingga layak digunakan sebagai bahan ajar alternatif yang lebih kontekstual dalam Pendidikan Kesetaraan Paket B.
Pelatihan Penyusunan Instrumen Penilaian Pembelajaran Berdeferensiasi Bagi Guru Kimia Di Kota Palu dengan Alur MERRDEKA Afadil; Nuryanti, Siti; Diah, Anang Wahid M.; Nurmayanti, Yuli; Rahmawati, Sitti
Panrannuangku Jurnal Pengabdian Masyarakat Vol. 4 No. 3 (2024)
Publisher : Lembaga Penelitian dan Pengembangan Teknologi dan Rekayasa, Yayasan Ahmar Cendekia Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35877/panrannuangku3113

Abstract

Musyawarah Guru Mata Pelajaran (MGMP) Kimia di Kota Palu menyadari pentingnya melakukan berbagai upaya agar proses pembelajaran kimia berjalan baik dari segi penyampaian materi pembelajaran maupun pelaksanaan praktikum di laboratorium merupakan wujud nyata dari pembelajaran yang berdiferensiasi. Permasalahan yang terjadi saat ini berupa: (1) guru masih bingung memaknai strategi pembelajaran berdiferensiasi sebagai bagian dari pembelajaran paradigma baru melalui praktik pembelajaran yang berpusat pada peserta didik; (2) guru belum mampu menerapkan kesatuan siklus pembelajaran yang berawal dari pemetaan kompetensi, perencanaan proses, dan pelaksanaan asesmen pembelajaran; (3) kemampuan guru melakukan perumusan rancangan pembelajaran dan asesmen sesuai dengan karakteristik kebutuhan peserta didik masih kurang, dan (4) guru masih mengalami kendala dalam menyusun instrumen penilaian keberhasilan penerapan strategi pembelajaran berdiferensiasi pada pembelajaran kimia. Peserta pelatihan sebanyak 40 orang yang merupakan guru-guru mata pelajaran kimia yang tergabung dalam kelompok MGMP Kimia SMA Kota Palu. Kegiatan Pengabdian kepada Masyarakat ini bertujuan untuk memberikan pemahaman tentang prinsip penyusunan instrument penilaian strategu pembelajaran berdiferensiasi yang meliputi diferensiasi konten, proses, dan produk pada materi pelajaran kimia pada tingkat SMA atau sederajad dengan alur MERRDEKA. Kegiatan yang akan dilakukan berupa workshop, pelatihan, dan pendampingan yang dilaksanakan dengan model partisipatif.
Determination of Citric Acid Level in Starfruit (Averrhoa bilimbi L.) and Starfruit Raisins Sri Rahayu; Nuryanti, Siti
Jurnal Akademika Kimia Vol. 12 No. 3 (2023)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2023.v12.i3.pp182-185

Abstract

Citric acid is one of the plants in Indonesia that has many benefits in various fields, especially in the industry. This study aims to determine the levels of citric acid in starfruit (Averrhoa Bilimbi L.) and starfruit raisins in Oti Village, Sindue Tobata District, Donggala Regency. The analytical method used to determine the levels of citric acid is alkalimetric titration. The sample used in this study came from Oti Village, Sindue Tobata District, Donggala Regency. The percentage results showed that the levels of starfruit citric acid were 6.363 %, and the starfruit raisins were 4.703 %.
Co-Authors A. Ma’ruf Afadil Agustin Tiwow Al Gifary, Muhammad Ali Amran Amran Rede Anang Wahid M.Diah Arun Haryanto Asmaul Husna B, Supriadi Baharuddin Hamzah Baharuddin Hamzah Barau, Fitri Chairil Anwar Chintia N. Barani Cynthia L. Radiman Daud Karel Walanda Dewi Satria Ahmar Dhamayanti, Noviasri Diniyanti, Diniyanti Edi Sukamto Ergina, Ergina Frantauansyah, Frantauansyah Hartarti Uminah I Made Tangkas Ijirana Indarini Dwi Pursitasari Indarini Dwi Puspitasari Irwan Irwan Jamaludin M Sakung Jeane Maria Mustika Tonahi Jusman Lapatta Karmila Karmila Kasmudin Mustapa Laksono Trisnantoro Lamalat, Tri Sulistiyawati Latupeirisa, Veronica Purnama Sari Lilik Suparwati Lis K. Djaledje Ma’ruf, Ahmad Magfirah Magfirah Male, Kasmir Sy. Marungkil Pasaribu Megawati T. H. Romu Mery Napitupulu Minarni R.J Minarni Rama Jura Mitha Widya Ningrum Moh. Azhar Afandy Muhamad A. Martoprawiro Muhammad Agus Muljanto Muhammad Silmi Hi Abubakar Nesia Andriana Nirwan Syafrin Nur A. O. Buhang Nur, Kurniati Nurbaeti Nurbaeti Nurdin Rahman Nurhasan, Abdul Kodir Nurmiati Nurmiati Nursucianti, Nursucianti Paulus H. Abram Pratiwi, Tia Putri Radiansah, Roy Rahmasita Rahmasita Rahmawati, Rahmawati Rasmun, Rasmun Ratman Ratman Ratman Ratman Robiansyah, Yal Sabirin Matsjeh Safna Nurfadila Sahida Sahida Saldi, Heri Salsabila, Unik Hanifah Setianingsih, Rahmadiana Siti Aminah Siti Nurbaya Sitti Rahmawati Sri Mulyani Sabang SRI RAHAYU Sri Wahyuni Sriyulaningsi Sriyulaningsi Sriyundiyati, Ni Putu Sudarmo, I Gede Suhardi Suhardi Suherman Suherman Suherman Suherman Sulhajir, Wahyuni Supriadi Supriadi Suwiyarsa, I Nyoman Tahril Tri Joko Raharjo U.B., Sitti Nadira Ubaidah, Nurcholis Al Winarti Winarti Yani Restiani Widjaja, Yani Restiani Yuli Nurmayanti Yuma Ardian Allu Yusuf Kendek Yusuf Kendek Yusuf Kendek