cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Nadia Amida
Contact Email
nadia.amida@unib.ac.id
Phone
+6273621170
Journal Mail Official
alotrop.fkip@unib.ac.id
Editorial Address
Jl WR Supratman Kandang Limun Bengkulu
Location
Kota bengkulu,
Bengkulu
INDONESIA
Alotrop Jurnal Pendidikan dan Ilmu Kimia
Published by Universitas Bengkulu
ISSN : 22528075     EISSN : 26152819     DOI : -
Core Subject : Science, Education,
Chemistry Education
Welcome to the Journal Alotrop, is an Open-Acces and peer-reviewed journal aims to publish scientific articles related to chemistry and education :i.e an interaction between natural sciences, educational sciences, technologies and management for both education and sciences and wise use of resources. We particularly encourage manuscripts that discuss contemporary research that can be used directly or inderecly in adressing critical issues and sharing of advanced knowledge and best practices in chemistry and education.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 13 Documents
 1   2 
Search results for , issue "Vol. 7 No. 1 (2023): Alotrop 2023" : 13 Documents clear
ANALISIS LOGAM BERAT Pb, Fe DAN Mn AIR TANAH SEKITAR TEMPAT PEMBUANGAN AKHIR SAMPAH TANGERANG Nita Rosita
ALOTROP Vol. 7 No. 1 (2023): Alotrop 2023
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/alo.v7i1.23239

Abstract

Telah dilakukan penelitian tentang analisis logam timbal (Pb), besi (Fe) dan mangan (Mn) air tanah sekitar tempat pembuangan akhir (TPA) sampah Sukadiri Kabupaten Tangerang. Tujuan penelitian untuk mengetahui kandungan logam Pb, Fe dan Mn kemudian dibandingkan dengan baku mutu air bersih. Teknik pengambilan sampel menggunakan metode purposive sampling dan dianalisis secara deskriptif numerik. Tujuh sampel air tanah diambil dengan radius 400-1000 meter dari TPA. Kandungan Pb, Fedan Mn di ukur menggunakan metode Standar Nasional Indonesia (SNI) secara spektrofotometer serapan atom (SSA). Berdasarkan penelitian laboratorium diperoleh kandungan logam Fe antara 0,02-1,16 mg/L, kandungan logam Mn antara 0,23-3,55 mg/L, dan kandungan logam Pb tidak terdeteksi. Hasil penelitian menunjukkan bahwa 5 sampel melampaui baku mutu kualitas air bersih
A REVIEW POTENSI DAUN SEMBUNG (Blumea balsamifera (Lin.) DC) SEBAGAI AGEN ANTIKANKER PAYUDARA Diah Ayu Aguspa Dita, S.Kep, Ners, M.Biomed; Risti Dwi Ocktaviani; Maeike Grestiana Sinaga; Dwiani Ratna Sari
ALOTROP Vol. 7 No. 1 (2023): Alotrop 2023
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/alo.v7i1.24604

Abstract

Breast cancer is the leading cause of death in women caused by the development of abnormal cells in the breast that continue to multiply. Current cancer therapy is surgery, radiation and/or chemotherapy. Breast cancer therapy currently being carried out can cause various side effects. One of the natural ingredients that have the potential as anticancer is Sembung (Blumea balsamifera) leaves. This journal review aims to provide information about the effect of giving Sembung leaf herbal tea (Blumea balsamifera) on breast cancer. This paper is the result of a review in June 2021-June 2022 using the design of this study is a literature review. Search publication articles on PubMed, google scholar, elsevier, science direct, PMC, Cochrane, Nature, and EBSCO using selected keywords, namely: active compound content in Blumea balsamifera, breast cancer, anticancer using keywords selected based on PICO. The results of various information prove that Sembung leaves have excellent potential in inhibiting cell growth, where Sembung leaves contain dihydroflavonol, luteolin-7-methyl ether, bioflavonoids, L-borneol, and essential oils. The mechanism of sembung leaf as an anticancer agent is by suppressing cancer cell proliferation, inducing apoptosis, inhibiting the P-GP efflux pump, and inhibiting cancer cell angiogenesis. How to use sembung leaves as an anticancer agent, namely: preparation of tools and materials, determination of plants, taking sembung leaves, extracting simplicia, and dissolving in water with an unknown concentration. Side effects that arise from the use of sembung leaves are itching and skin irritation. Keywords: Blumea balsamifera, Breast Cancer, Anticancer
Eco-friendly silver nanoparticles (AgNPs) fabricated by green synthesis using Capsicum annum L. extract: biosynthesis, characterization, and antibacterial activity Erna Fitriany Fitriany; Andri Priyoherianto; Panji Ratih Suci
ALOTROP Vol. 7 No. 1 (2023): Alotrop 2023
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/alo.v7i1.26546

Abstract

Silver nanoparticles (AgNPs) have many benefits in the health sector, it has antimicrobial and biomedical Activity. AgNPs can be synthesized by using green chemistry or using chemical substances, such as NaBH4. Green synthesis of AgNPs is an environmentally friendly alternative and has cost-effective production. Capsicum annuum L. combined with Saffron extract was used to synthesize AgNPs. The biosynthesis, characterization, and antibacterial activity of AgNPs were studied in this research. The synthesized AgNPs were characterized by UV- Visible spectroscopy (UV-Vis), Fourier- transform Infrared Spectroscopy (FTIR), and Particle Size Analyzer (PSA). The formation of AgNPs was confirmed by optical performance using UV-VIS spectroscopy and showing a peak of AgNPs at 407 nm. Capsicum Annuum L. combined with Saffron extract contained C-H, C-N, and C=O groups. The particle size was characterized using PSA, the size is 37,74 nm. Capsicum Annuum L. combined with Saffron extract has good antibacterial activity.  Keywords: Green Synthesis, AgNPs, Capsicum annuum L, Saffron.
PENGEMBANGAN E-MODUL INTERAKTIF PADA MATERI TERMOKIMIA DI SMA NEGERI 3 KOTA BENGKULU Rifki Nomizar; Hermansyah Amir; Salastri Rohiat
ALOTROP Vol. 7 No. 1 (2023): Alotrop 2023
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/alo.v7i1.28014

Abstract

This study aims to develop teaching materials in the form of an Interactive E-Module on Thermochemistry at SMA Negeri 3 Bengkulu City. The feasibility of this Interactive E-Module is based on the assessment of media experts and material experts. Products that are declared feasible, are known to be attractive based on a questionnaire response to the interest of students and teachers. This type of research is Research and Development (R&D) with the ADDIE type of research model. There are 2 media and material validators each who are competent in their fields. The small-scale test sample was 12 students with purposive sampling technique and for the teacher's interest response test as many as 3 chemistry teachers. The results of the feasibility of the interactive E-Module are based on the assessment of media experts getting very valid qualifications with an average percentage of 94.50%, material validation getting very valid qualifications with an average percentage of 93.88%, student responses getting very interesting qualifications with an average percentage of 91.41% and the teacher's response to getting very attractive qualifications with an average percentage of 90.55%. This shows that the interactive E-Module on the thermochemical material produced in this study is considered very feasible to be used in learning.
PENGEMBANGAN ALAT EVALUASI KOGNITIF BERBASIS ISPRING SUITE 9 PADA MATERI LARUTAN PENYANGGA DI SMA NEGERI 9 KOTA BENGKULU Pratiwi Kiki Ramadhanti; Wiwit Alwi; Febrian Solikhin
ALOTROP Vol. 7 No. 1 (2023): Alotrop 2023
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/alo.v7i1.28020

Abstract

This research was a research and development to produce a cognitive evaluation tool based on iSpring Suite 9. The purpose of this study was to determine the feasibility of items and a cognitive evaluation tool based on iSpring Suite 9 on buffer solution material in terms of the assessment of material experts and media experts, knowing the validity empirical and reliability of the items on the cognitive evaluation tool based on iSpring Suite 9 on buffer solution material, and knowing the results of implementing the cognitive evaluation tool based on iSpring Suite 9 on buffer solution material in class XI MIPA 1 SMA Negeri 9 Bengkulu City. The development model used was the ADDIE development model which consists of analysis, design, development, implementation, and evaluation. This research was conducted at SMA Negeri 9 Bengkulu City with the research subjects being 10 students of class XI MIPA 1 for small-scale trials and 30 students of class XI MIPA 1 for field testing. The results obtained (1) the feasibility level of cognitive evaluation tools on the material aspect was 94.25% and from the media aspect was 90.83% or in the very feasible category, (2) based on the results of empirical validation obtained 20 valid items, (3) based on the reliability test obtained a coefficient of 0.951 which was included in the very high category, (4) based on the results of the implementation of the cognitive evaluation tool applied in the classroom, it was proven that it can be used to measure student learning outcomes with a mastery percentage of 83.3%.  Keywords: cognitive evaluation tool, iSpring Suite 9, buffer solution
Pemanfaatan Microsoft Excel Untuk Membantu Meningkatkan Kualitas Pembelajaran Mata Kuliah Matematika Kimia I Nyoman Candra; Elvinawati; Hermansyah Amir
ALOTROP Vol. 7 No. 1 (2023): Alotrop 2023
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/alo.v7i1.28147

Abstract

The purpose of this study was to improve learning activity and learning achievement of chemical education students in the odd semester who took the course Mathematics for Chemistry in the academic year of 2017/2018. This is a classroom action research consisting of three cycles, each of which includes planning, implementation, observation, and reflection. An observation sheet was used for collecting student and lecturer activities, whereas student achievement was collected using essay tests. The results show that the observation score for student activity for cycle 1, cycle 2, and cycle 3 were 20 (sufficient category), 25 (good category), and 27 (good category) respectively. Whereas, the average tests were 65.6; 80.4; and 81.3 for cycle 1, cycle 2, and cycle 3 respectively. It can be concluded that instruction of mathematics for chemistry courses aided by Microsoft Excel for students who took this course in the odd semester, the academic year of 2017/2018 could increase student learning activity and learning achievement. Keywords: Microsoft Excel; Mathematic for chemistry; classroom action research; learning achievement; learning activity.
Pengembangan Buku Saku Berdasarkan Studi Identifikasi Tanaman Obat Pada Masyarakat Suku Serawai Bengkulu Selatan Rio Sunardi; Dewi Handayani; Wiwit Wiwit
ALOTROP Vol. 7 No. 1 (2023): Alotrop 2023
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/alo.v7i1.28161

Abstract

This research is a research and development of teaching materials in the form of a pocketbook based on the study of the identification of medicinal plants in the Serawai people of South Bengkulu. The purpose of this study was to determine the medicinal plants, the content of secondary metabolite phytochemical compounds in each plant, and the validity and responses of students to the developed pocketbook. The development model used is the research and development (R&D) model of Bord and Gall (1983) which is limited to the seventh stage, namely the revision of the product from the limited trial results. From the research, 19 (nineteen) medicinal plants were selected that were used by the Serawai people of South Bengkulu. The results of secondary metabolite screening showed that the medicinal plants found contained various levels of tannins, alkaloids, saponins, flavonoids, terpenoids, and steroids. The validity of the pocketbook from the study of the identification of medicinal plants in the Serawai tribal community obtained an average value of 84.3% for the material aspect and 91.7% for the media aspect which was included in the very appropriate category. Student responses regarding the pocket book of medicinal plants developed obtained a value the percentage of material aspects, media, benefits are 85.8%, 88.0%, and 87.0%, respectively with an average of 86.9% which were included in the very good criteria. Student also give a positive response to the product being developed with a 100 % interest percentage. Keywords: Pocket Book, Medicinal Plants, Serawai Tribe, Secondary Metabolites
UJI AKTIVITAS ANTIKOLESTEROL EKSTRAK BATANG Uncaria cordata (Lour.) Merr. TERHADAP KADAR KOLESTEROL TOTAL MENCIT JANTAN (Mus musculus) Rika Indriyani; Dewi Handayani; Nurhamidah Nurhamidah; Agus Sundaryono
ALOTROP Vol. 7 No. 1 (2023): Alotrop 2023
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/alo.v7i1.28163

Abstract

The aim of this study was to determine the anticholesterol activity of the stem extract of Uncaria cordata (Lour.) Merr. on total cholesterol levels in male mice (Mus musculus). Before carrying out the anticholesterol activity test, phytochemical tests were carried out to determine the content of secondary metabolites in Uncaria cordata stems. Furthermore, the anticholesterol activity test was carried out in vivo using male mice, male mice were induced by high-fat diet (PTL) in the form of beef brain, quail egg yolk and propylthiouracil to increase cholesterol levels in mice until they experienced hypercholesterolemia, then mice were induced by plant extracts to see anticholesterol activity. Cholesterol levels were measured using a glucometer (Autocheck). Phytochemical test results showed the content of secondary metabolites in the form of flavonoids, saponins, alkaloids, tannins and terpenoids. The results of the anti-cholesterol activity test showed that there was anti-cholesterol activity as indicated by a decrease in cholesterol levels in mice with hypercholesterolemia. A decrease of 11.45% at a dose of 5.3 mg/30grW; 12.89% at a dose of 10.2mg/30grW and 21.05% at a dose of 21.2mg/30grW. Key words : Anticholesterol, Uncaria cordata (Lour.) Merr., Hypercholesterolemia
Pengembangan Bahan Ajar Berbasis Android pada Materi Konsep Mol Di SMAN 4 Kota Bengkulu Pica Lestari; Dewi Handayani; Febrian Solikhin
ALOTROP Vol. 7 No. 1 (2023): Alotrop 2023
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/alo.v7i1.28168

Abstract

The era of the industrial revolution 4.0 in education is characterized by the use of technology in the learning process. This study aims to test the feasibility, test student responses and see student learning outcomes on android-based teaching materials on the mole concept material at SMAN 4 Kota Bengkulu. The research was conducted using the Research & Development (R&D) method using a 4D development model which was limited to the 3D stage (Define, Design and Development). The feasibility test of android-based teaching materials is seen through the assessment of media and material experts, test student responses on small-scale and large-scale tests and student learning outcomes from the N-Gain score. The assessment of the feasibility of android-based teaching materials was carried out by two media and materials experts respectively. The results of the feasibility obtained are the results of media validation 91% and the results of material validation 88.33% with a very feasible category. Student response tests were carried out on a small and large scale. Determination of small-scale and large-scale samples with a normality test for all students of class X SMAN 4 Kota Bengkulu TA 2020/2021, obtained 9 students of class X IPA 1 as samples of the small-scale response test and 34 students of class X IPA 2 as samples of large-scale response test. The results of the small-scale student response test are 91.79% and the large-scale response test results are 85.9%, with a very good category. Learners on a large scale are also seen from their learning outcomes from the N-Gain score obtained, which is 0.62 or is in the medium category. The results obtained show that android-based teaching materials on the mole concept material are very feasible to be used in the learning process. Keywords: Development Research, Teaching Materials, Android, Mole Concept
PENGEMBANGAN E-MODULE BERBASIS REPRESENTASI KIMIA PADA MATERI KESETIMBANGAN ION DALAM LARUTAN GARAM UNTUK MENINGKATKAN HASIL BELAJAR PESERTA DIDIK Annida Nurul Shabrina; Salastri Rohiat; Rina Elvia
ALOTROP Vol. 7 No. 1 (2023): Alotrop 2023
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/alo.v7i1.28179

Abstract

This study aims to help students understand the ion balance material in a salt solution more easily at the three levels of chemical representation, by developing an e-module. E-module was developed using Flip PDF Professional with ADDIE development model. The research was conducted at SMA Negeri 3 Bengkulu City with a research sample of 12 students of class XI MIPA 5 for small-scale trials and 28 students of class XI MIPA 3 for large-scale trials. The research data were obtained from interviews, material and media validation questionnaires, student response questionnaires, and e- module readability, as well as pretest and posttest results. The results of the study obtained that the feasibility level of the e-module on the material aspect was 90% and the media was 95.45% with both categories being very valid. Student responses obtained percentage results, namely 86.11% with very good criteria, and e-module readability for students, namely 87.38% in the very readable category. The N-Gain score for students' cognitive learning outcomes at 0.812 which was included in the high category. The results of this study indicate that the e-module based on the chemical representation of the ion balance material in a salt solution is very good and suitable for use in the learning process because it helps students understand the material at three levels of chemical representation, namely macroscopic, submicroscopic and symbolic. Keywords: e-module, representation, chemical

Page 1 of 2 | Total Record : 13

 1   2 

Filter by Year

2023 2023


Reset
Filter By Issues
All Issue Vol. 9 No. 2 (2025): Jurnal Penelitian Pendidikan dan Ilmu Kimia Vol. 9 No. 1 (2025): Jurnal Pendidikan dan Ilmu Kimia Vol. 8 No. 2 (2024): Alotrop 2024 Vol. 8 No. 1 (2024): Penelitian Kimia dan Pembelajaran Kimia Vol. 7 No. 2 (2023): Alotrop 2023 Vol. 7 No. 1 (2023): Alotrop 2023 Vol. 6 No. 2 (2022): Pembelajaran Abad 21 Vol 6, No 1 (2022) Vol 5, No 2 (2021) Vol 5, No 1 (2021) Vol 4, No 2 (2020) Vol 4, No 1 (2020) Vol 3, No 2 (2019) Vol 3, No 1 (2019) Vol 2, No 2 (2018) Vol 2, No 1 (2018) Vol 1, No 2 (2017) Vol 1, No 1 (2017) More Issue