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All Journal TABULARASA JURNAL PENELITIAN SAINTIKA JURNAL PENGABDIAN KEPADA MASYARAKAT PROSIDING SEMINAR KIMIA AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian JCRS (Journal of Community Research and Service) Jurnal Inovasi Pembelajaran Kimia (Journal Of Innovation in Chemistry Education) Eduproxima : Jurnal Ilmiah Pendidikan IPA Indonesian Journal of Chemical Science and Technology Indian Journal of Forensic Medicine & Toxicology Jurnal Pengabdian Kepada Masyarakat (JPKM) Tabikpun Jurnal Teknologi Pendidikan : Jurnal Penelitian dan Pengembangan Pembelajaran Journal of Science and Science Education (JoSSEd) Indonesian Journal of Advanced Research (IJAR) Madani: Multidisciplinary Scientific Journal Algebra
Ida Duma Riris
Universitas Negeri Medan
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Medicine & Pharmacology Neuroscience Physics Public Health Social Sciences Other

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Pengaruh Pembelajaran Interaktif Berbasis Web pada Materi Metabolisme Karbohidrat Terhadap Motivasi dan Kemandirian Belajar Mahasiswa Hasibuan, Desy Rahmayanti; Riris, Ida Duma; Silaban, Ramlan
TABULARASA Vol 14, No 2 (2017): Jurnal TABULARASA
Publisher : Universitas Negeri Medan

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Abstract

Penelitian ini bertujuan untuk memperoleh perbaikan pembelajaran interaktif berbasis web dan pengaruhnya terhadap motivasi dan kemandirian belajar mahasiswa. Materi pembelajaran pada penelitian ini adalah metabolisme karbohidrat. Penelitian ini adalah  penelitian pengembangan (development research) yang bersifat deskriptif. Pengambilan  sampel dilakukan  dengan teknik purposive sampling di jurusan kimia Unimed. Sampel yang diujicobakan sebanyak 31 orang mahasiswa semester 4. Hasil yang dilihat diperoleh dari data angket motivasi, kemandirian belajar dan respon mahasiswa terhadap pembelajaran berbasis web. Selanjutnya hasil belajar diperoleh dari data evaluasi (pretes-postes), tugas mahasiswa, nilai formatif. Soal yang digunakan sebanyak 15 soal multiple choice dan soalnya terlebih dahulu divalidasi. Hasil yang diperoleh dari angket motivasi 45.16% tergolong kategori tinggi,  kemandirian belajar 32.26% tergolong kategori tinggi, dan respon mahasiswa terhadap pembelajaran berbasis web sebesar 51.61% tergolong kategori tinggi. Sedangkan dari hasil belajar rata-rata nilai pretes 30.90 dan postes 84.41, nilai tugas LKM rata-rata 78.60, CBR rata-rata 89.19, CJR rata-rata 80.65, nilai formatif rata-rata 87.78
ISO LAS I DAN ELUSIDASI STRUKTUR KI MIA YANG MEMPUNYAI BIOAKTIVITAS SEBAGAI INHIBITOR ENZIM a­ GLUKOSIDASE DARI KULIT BATANG RARU (Vatica pauciflora Blume) Riris, Ida Duma
JURNAL PENELITIAN SAINTIKA Vol 13, No 1 (2013): MARET 2013
Publisher : JURNAL PENELITIAN SAINTIKA

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Abstract

 Tumbuhan Raru (Vatica pauciflora Blume) adalah tumbuhan huian liar yang tumbuh di daerah Tapanuli Tengah. Kulit batang iumbuhan ini dipercayaidapat mengobati diabetes Melitus, dengan cara merebusnya dan airnya diminum.Penelitian ini bertujuan untuk meneniukan struktur kimia dari senyawa yangmenpunyai bioaktivitas sebagai inhibitor enzim a-glukosidase dari ekstrak etanolkulii batang raru (Vatica pauciflora Blume). lsolasi dilakukan dengan eksraksi kuliibatang dengan menggunakan pelarut n-heksan etil aseiai, etanol, dan air.Kemudian ekstrak etanol kulit batang raru dipartisi dan dikromatografi kolomdengan fasa diam Silika gel. Hasil yang diperoleh pada ekstrak etanol Isolat VpEt-9-4-4-1 memperlihatkan daya hambat enzim a glukosidase ICso sebesar 93,46.Selanjutnya dilakukan penentuan struktur kimia dengan UV, FT.IR. RM 1 Dimensi, RM 2 Dimensi (COSY, HMQC dan HMBC) pada senyawa terdapat : 2 meioksi, 1 aromatik, dan 1 karbonil, dengan Rumus Molekul C1sH1s091 denganMassa 342. Kemudian dilakukan pengukuran Massa dengan HR-MS diperoleh Massa 341,087.
Anti-Hyperlipidemia Effects of Sijukkot Leaf Extract Ethanol (Lactuca Indica) Ida Duma Riris; Saronom S ilaban; Marini Damanik; Nora Susanti
Indian Journal of Forensic Medicine & Toxicology Vol. 16 No. 2 (2022): Indian Journal of Forensic Medicine & Toxicology
Publisher : Institute of Medico-legal Publications Pvt Ltd

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37506/ijfmt.v16i2.18090

Abstract

Lactuca indica from Indonesia (Humbang Hasundutan) is a plant used to treat as antihyperlipidemia :Cholesterol, Trigliserida (TG), High Density Lippoprotein (HDL), Low Density Lippoprotein (LDL),on 28 male rats of the wistar strain (Rattus norvegicus) that have been given high-fat diets were given to3 control groups, namely rats given standard feed, groups of rats given standard and high-fat diets, andgroups of rats given simvastatin with treatment for 21 days. The groups with different doses were 100mg/kg bw, 200 mg/kg bw, 300 mg/kg bw and 400 mg/kg bw. Giving the ethanol extract of the leaves ofthe sijukkot plant has an effect on reducing total cholesterol levels. With the analysis obtained that theShapiro-Wilk Normality Test with a sig value > 0.05, the data is normally distributed. The results of theanalysis in the Test of Homogeneity of Variances table obtained a Sig value of 0.510. Cholesterol SigValue 0.510 > 0.05; TG 0.102>0.05; HDL 0.01 <0.05 and LDL 0.257> 0.05. Thus, the ethanolic extractof sijukkot leaves gave a positive effect on cholesterol levels in the serum lipid profile of High DensityLippoprotein (HDL and Low Density Lippoprotein (LDL).
ANTIOXIDANT ACTIVITY TEST of SIJUKKOT (Lactuca indica L.) LEAVES EXTRACT LEAF Sumiati Nainggolan; Ida Duma Riris
Indonesian Journal of Chemical Science and Technology (IJCST) Vol 3, No 2 (2020): July 2020
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v3i2.19526

Abstract

Has been investigated the antioxidant activity of  sijukkot ( Lactuca indica L.) The antioxidant activity was tested by capturing 2,2’-diphenyl-picrylhydrazyl (DPPH) free radical method and Vitamin C as a standard of comparison, to absorption using UV-Vis  spectrophotometry at a wavelength of 517nm. The data obtained were analyzed using the SPSS for windows, resulting in a value of y = 0.2036x + 30.35 for sijukkot extract and y = 29.625x - 73.664 for vitamin C. It was found the leaves have an antioxidant site with 96,51 ppm through IC50 test 4,17 ppm which used Vitamin C as a control. 
Study of Phytochemicals, Toxicity, Antibacterial Activity of Ethyl Acetate Leaf Extract Extract (Paperomiapellucida L) Ida Duma Riris; Tita Juwitaningsih; Destria Roza; Marini Damanik; Albinus Silalahi
Indonesian Journal of Chemical Science and Technology (IJCST) Vol 3, No 2 (2020): July 2020
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v3i2.19532

Abstract

Suruhan Leaf (Paperomiapellucida L) is a weedy plant that is used by rural communities as herbal medicine. In this study, phytochemical tests have identified compounds contained in the ethyl acetate extract, then the toxicity test was carried out by the Brint Shrimp LethallytyTocycity (BSLT) method using Artemia Salina Leach shrimp larvae, an antibacterial activity test for bacteria: Bacillus cereus (ATCC) 11778), S. aureus (ATCC 25923), E. coli (ATCC 25922), S. saprophytic (ATCC 49907), Catsobacterfrendi (ATCC 18090), P.acne (ATCC 27853), Epidermis (ATCC 12228) with diffusion methods, various of concentration 1; 5; 10; 25% as control used chloramphenicol 30 mcg, the highest inhibitory zone at a concentration of 25% showed a strong antibacterial succession of 20.7; 11.1; 29.7; 15; 13.5; 10; 17.3 mm. The results of the identification of compounds in ethyl acetate extract are alkaloids, flavonoids, steroids, saponins, and tannins. The toxicity of LC50 is 71.28 ppm (toxic).
PENGARUH TEKNOLOGI IT PADA MODEL PEMBELAJARAN DISCOVERY CONSTRUCTIVE LEARNING UNTUK MENINGKATKAN PEMAHAMAN SISWA MENGENAI ZAT ADITIF MAKANAN DI KELAS VIII SMP KALAM KUDUS MEDAN Neva Asih Sary Silalahi; Ida Duma Riris; Marham Sitorus
PROSIDING SEMINAR KIMIA Vol 1 No 2 (2023): Prosiding SNKT II 2022
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

This research aims for knowing is there is difference enhancement results study chemistry SMP Kalam Kudus Medan using flash animation media with Ms. Power Point on the Discovery Constructive Learning model. The population in this study were students class VIII-B and VIII-C SMP Kalam Kudus Medan. Taking sample study taken by purposive sampling consisting of from class learning Discovery Constructive Learning with flash animation media and in class learning Discovery Constructive Learning with Ms. Power Point media. Type this research is research experiment pseudo . Based on the results of the data requirements test , it is known that both the result data study student class learning Discovery Constructive Learning with flash animation media and class Discovery Constructive Learning with Ms. Power Point media is stated is normally distributed and has uniform variance (homogeneous) . Based on the normalized gain data , the increase in results learn using _ learning Discovery Constructive Learning with flash animation media is 84.43% and an increase results learn using _ Discovery Constructive Learning with Ms. Power Point media is 71.06 %. The size difference enhancement results study chemical students is 13.37%. Test results hypothesis , obtained t < -t½α and t > t½α by using t test two party namely 0.0437 < -0.025 and 0.0437 > 0.025 at the level significance = 0.025. This means that H0 is rejected and Ha is accepted , where Ha = exists difference enhancement results study chemistry SMP Kalam Kudus Medan using flash animation media with Ms. Power Point on the Discovery Constructive Learning model for class VIII SMP Kalam Kudus Medan on the subject discussion substance additive food 2013/2014. Keywords: Discovery Constructive Learning model, IT media , SMP Kalam Kudus Medan
Pelatihan Pembuatan Hand Sanitizer Berbasis Ekstrak Daun Jelatang (Urtica dioica L.) di MTsN 3 Medan Ahmad Nasir Pulungan; Junifa Layla Sihombing; Putri Faradilla; Dwy Puspita Sari; Zuhairiah Nasution; Mutiara Agustina Nasution; Haqqi Annazili Nasution; Ida Duma Riris; Mhd Fahmi; Nia Veronika; Nurul Hidayah
Jurnal Pengabdian Kepada Masyarakat (JPKM) TABIKPUN Vol. 4 No. 2 (2023)
Publisher : Faculty of Mathematics and Natural Sciences - Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jpkmt.v4i2.117

Abstract

Pelatihan pembuatan hand sanitizer dengan ekstrak daun jelatang (Urtica dioica L.) dilakukan dalam rangka mendukung gerakan madrasah sehat di MTsN 3 Medan melalui program perilaku hidup bersih dan sehat (PHBS). PHBS dianggap mampu menciptakan lingkungan sekolah yang sehat. Salah satu cara menjaga kebersihan yang paling dasar adalah menjaga kebersihan tangan yang banyak menjadi akses penularan bakteri. Penggunaan hand sanitizer merupakan upaya yang paling sederhana, efektif dan efisien. Penambahan bahan alami seperti ekstrak daun jelatang (Urtica Dioica L.) dapat dimanfaatkan sebagai anti bakteri. Metode yang dilakukan pada kegiatan ini berupa penyuluhan serta pelatihan secara langsung pembuatan produk hand sanitizer dengan ekstrak daun jelatang (Urtica dioica L.). Setelah adanya kegiatan PKM ini, peningkatan pemahaman kelompok mitra terhadap PHBS dan produksi hand sanitizer mengalami peningkatan sekitar 2,86 – 37,90%.
The Effect of E-Module on Activity and Learning Outcomes on Electrolyte and Nonelectrolyte Solutions Nova Damanik; Ida Duma Riris; Marham Sitorus; Junifa Layla Sihombing; Dewi Syafriani
Jurnal Inovasi Pembelajaran Kimia (Journal of Innovation in Chemistry Education) Vol 5, No 2 (2023): OCTOBER 2023 EDITION
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jipk.v5i2.54922

Abstract

This research aims to determine activities, learning outcomes and the correlation between activities and student learning outcomes taught using the Project Based Learning (PjBL) learning model assisted by e-modules for class X SMA on electrolyte and non-electrolyte solutions. The population in this study were students of class This research uses test and non-test instruments in the form of student learning activity observation sheets which have been tested and are valid. The data obtained were tested for normality and homogeneity. Based on the results of data processing that has been analyzed, there are learning outcome values tcount = 9.714 and ttable = 1.66, the activity obtained is tcount = 6.069 and ttable = 1.66. Where tcount>ttable shows that Ha is accepted and H0 is rejected, so it can be concluded that there is an influence of the Project Based Learning (PjBL) learning model assisted by e-modules for class X SMA on electrolyte and non-electrolyte solutions. The correlation test was carried out to determine the significant correlation between activities and student learning outcomes. The research results show that rcount > rtable (0.929 > 0.329) so H0 is rejected. Thus, there is a significant correlation between activities and student learning outcomes assisted by e-modules for class X SMA on electrolyte and non-electrolyte solutions.
PELATIHAN PENGEMBANGAN KEWIRAUSAHAAN DALAM RANGKA PENINGKATAN INCOME GENERATE DENGAN PEMBUATAN INSTALASI TANAMAN HIDROPONIK DI DHARMA WANITA BADAN PUSAT STATISTIK SERDANG BEDAGAI Damanik, Marini; Riris, Ida Duma; Nasution, Zuhairiah; Nasution, Marnida Yusfiani; Pulungan, Ahmad Shafwan; Dewi, Ratna Sari; ,, Serimawarni; Sitorus, Rosa Nadya Evelyn; Pratiwi, Meidy Citra; Safruddin, Muhammad Sultan; Saputra, Ardi Maulanna
Journal of Community Research and Service Vol 8, No 2: JULY 2024
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jcrs.v8i2.62225

Abstract

Pemanfaatan lahan yang ada dimanfaatkan oleh Dharma Wanita dan Mitra Badan Pusat Statistik (BPS) Serdang Bedagai. Pemanfaatan lahan perlu disesuaikan dengan kebutuhan pangan semakin meningkat. Dengan begitu pemanfaatan lahan terutama lahan kosong maupun perkarangan rumah terus diupayakan untuk memenuhi kebutuhan pangan keluarga dan peningkatan perekonomian. Tim pengabdian masyarakat Universitas Negeri Medan mengupayakan sosialisasi terkait penanaman hidroponik berupa pakcoy dan selada air dengan beberapa tahap yaitu penyampaian materi terkait keunggulan dan manfaat tanaman hidroponik, praktek lapangan secara langsung mengenai penanaman tanaman hidroponik serta ternak lele untuk memanfaatkan saluran air di sekeliling BPS Serdang Bedagai. Alat berupa instalasi hidroponik serta bahan dasar yang dibutuhkan juga diberikan kepada mitra untuk pemanfaatan di perkarangan mitra serta keberlanjutan secara mandiri sehingga dapat meningkatkan perekonomian mitra.
CONTEXTUAL TEACHING AND LEARNING USING REACT STRATEGY COMPONENTS (RELATING, EXPERIENCING, APPLYING, COOPERATING, AND TRANSFFERING) ON LEARNING OUTCOMES AND STUDENT MOTIVATION Anastasya Simbolon, Veronika; Ida Duma Riris
Algebra : Jurnal Pendidikan, Sosial dan Sains Vol 4 No 2 (2024): ALGEBRA : JURNAL PENDIDIKAN, SOSIAL DAN SAINS
Publisher : Yayasan Amanah Nur Aman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58432/algebra.v4i2.1103

Abstract

ABSTRAK Berdasarkan rumusan masalah di atas, maka tujuan penelitian ini adalah sebagai berikut untuk mengetahui perbedaan metode pembelajaran yang lebih efektif dalam pembelajaran materi kimia di SMA Negeri 1 Sekerak. Metode yang digunakan dalam penelitian adalah eksperimen dengan menggunakan eksperimen semu. Desain yang digunakan dalam penelitian adalah desain kelompok kontrol nonequialent (Pretest-Posttest Control Group Design). Desain ini terdiri dari dua kelompok, masing-masing desain akan dipilih secara acak. Penelitian ini dilakukan di kelas XI IPA SMA Negeri 1 Sekerak yang terletak di Jln. Desa Tani, Desa Sulum, Kecamatan. Sekerak, Kab. Aceh Tamiang Provinsi Aceh. Berdasarkan hasil penelitian pengaruh model pembelajaran REACT berbantuan media animasi terhadap hasil belajar siswa pada materi larutan buffer di SMA Negeri 1 Sekerak. Hasil belajar siswa dengan menggunakan model pembelajaran REACT meningkat dari rata-rata skor 77 menjadi 81. Respon siswa terhadap model pembelajaran REACT berbantuan media animasi di SMA Negeri 1 Sekerak memperoleh persentase siswa yang menjawab Sangat Setuju (SS) sebesar 71,14% , sehingga 70% < 71,14 < 85% hal ini menunjukkan bahwa siswa memberikan respon positif terhadap model pembelajaran REACT berbantuan media animasi Terdapat perbedaan hasil belajar siswa yang menggunakan model pembelajaran REACT berbantuan media animasi dan tanpa menggunakan pembelajaran REACT model pada materi larutan buffer di SMA Negeri 1 Sekerak. Kata Kunci : Hasil Belajar; Motivasi; Pembelajaran REACT; ABSTRACT Based on the formulation of the problem above, the objectives of this study are as follows knowing the difference of learning methods that are more effective in learning chemistry material at SMA Negeri 1 Sekerak. The method used in the research is experimentation using quasi-experiments. The design used in the research was nonequialent control group design (Pretest-Posttest Control Group Design). This design consists of two groups, each design will be selected randomly. This research was conducted in class XI Science at SMA Negeri 1 Sekerak which is located on Jln. Tani Village, Sulum Village, District. Sekerak, Kab. Aceh Tamiang Aceh Province. Based on the results of research on the effect of the REACT learning model assisted by animated media on student learning outcomes on buffer solution material at SMA Negeri 1 Sekerak. student learning outcomes using the REACT learning model increased from an average score of 77 to 81. Students' responses to the REACT learning model assisted by animated media at SMA Negeri 1 Sekerak obtained a percentage of students who answered Strongly Agree (SS) of 71.14%, so that 70% < 71.14 < 85% this indicates that students gave a positive response to the REACT learning model assisted by animated media There is a difference in student learning outcomes using the REACT learning model assisted by animated media and without using the REACT learning model on buffer solution material at SMA Negeri 1 Sekerak. Keyword : Learning Outcomes; Motivation; REACT Learning;
Co-Authors ,, Serimawarni Agustin, Nadia Ahmad Nasir Pulungan Albinus Silalahi Anastasya Simbolon, Veronika Anna Juniar Bajoka Nainggolan Damanik, Marini Dewi Syafriani Dewi Syafriani, Dewi Eddiyanto Ginting, Elfrida Ginting, Elfrinda Grace Octavia Hutasoit Gulo, Kristin Wulan Liberti Vivanis H, Herlinawati Haqqi Annazili Nasution Hasibuan, Desy Rahmayanti Hendrawan Indra Koto Irving Josafat Alexander Junifa Layla Sihombing Junifa Layla Sihombing, Junifa Layla Juwita , Tita Kurniawan, Ekin Dwi Arif Marham Sitorus Marham Sitorus Marini Damanik Marini Damanik Mhd Fahmi Muchtar, Zainnudin Mutiara Agustina Nst Nasution, Haqqi Annazili Nasution, Marnida Yusfiani Neva Asih Sary Silalahi Nia Veronika Nova Damanik Nurul Hidayah Nurul Khumaida Pratiwi, Alfira Julian Pratiwi, Meidy Citra Pulungan, Ahmad Shafwan Putri Faradilla Rabiah Afifah Daulay Ramlan Silaban Ratna Sari Dewi Roza, Destria Safruddin, Muhammad Sultan Salsabila, Fuaddinda Putri Samosir, Rafidah Almira Saputra, Ardi Maulanna Sari, Dwy Puspita Saronom S ilaban Sibarani, Nancy Agalalis Silaban, Lamtiur Paronauli Sitorus, Rosa Nadya Evelyn Sri Adelila Sari Sumiati Nainggolan Tampubolon, Cindy Claudin Tita Juwitaningsih Tita Linyan Pardede Zuhairiah Nasution, Zuhairiah