Article Per Year (5 Year)
p-Index From 2019 - 2024
1.037
P-Index
This Author published in this journals
All Journal Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan PROSIDING SEMINAR KIMIA Ihtiyath : Jurnal Manajemen Keuangan Syariah KATALIS: Jurnal Penelitian Kimia dan Pendidikan Kimia English Language Study and Teaching Journal (ELASTE) Al Hisab: Jurnal Ekonomi Syariah JIPI (Jurnal IPA dan Pembelajaran IPA)
Mastura Mastura
Unknown Affiliation
Religion Arts Humanities Biochemistry, Genetics & Molecular Biology Chemistry Economics, Econometrics & Finance Education Environmental Science Languange, Linguistic, Communication & Media Physics Social Sciences

Published : 8 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 8 Documents
Search

 1 
SENYAWA FENOLIK DARI DAUN HALBAN (Vitex pinnata Linn) SEBAGAI ANTIOKSIDAN Mastura Mastura; Tonel Barus; Lamek Marpaung; Partomuan Simanjuntak
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
Publisher : PROSIDING SEMINAR KIMIA

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

Abstract

Isolation and identification a phenolic compound from Aceh traditional medicinal plants “Halban” leaves (Vitexpinnata Linn) had been done. Isolation was carried out by extracted Halban leaves with methanol solvent, and then portioned with n-hexane, ethylacetate, and evaporated to gave n-hexane, ethylacetate and water extracts. Purification of ethylacetate was conducted with clumn chromatography (SiO2; (i). n-hexane-ethylacetate = 10 : 1 ~ 1 : 1 (ii). n-hexane-ethylacetate = 2 : 1 (iii). N-hexane-acetone = 1 : 1 to gave one pure compound. Identification of isolated compound by interpretation of Ultra violet (UV), Infra Red (IR), and Nuclear magnetic Resonance (1H- & 13C-NMR) spectra showed the compound is 4-hydroxyl methyl benzoate which has activity as antioxidant IC50 41.08 ppm. Keywords: Halban; Vitexpinnata Linn; verbenaceae; antioksidan; 4-hydroxyl methyl benzoate
PENERAPAN MODEL PEMBELAJARAN KOOPERATIF TIPE STUDENT TEAM ACHIEVEMENT DIVISION (STAD) UNTUK MENINGKATKAN HASIL BELAJAR IPS SISWA KELAS III SDN 3 TELUK RHU Mastura Mastura; Otang Kurniaman; Lazim N Lazim N
Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan Vol 5, No 1 (2018): WISUDA APRIL 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan

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

Abstract

Abstract: This research is done because the average value of IPS learning result of grade 3 students of SDN 3 Teluk Rhu is low that is 70,40 lower than Minimum Exhaustiveness Criterion (KKM) determined by school for class III that is 75. Low result of student learning caused by less learning methods involving students in learning. Learning is still dominated by teachers through lecture methods. This study is a classroom action research (PTK) consisting of two cycles, carried out in even semester 2016/2017. Subjects of this study amounted to 25 people. Of the 25 students, 11 people have been completed and 14 people are still unfinished. This study aims to improve the learning outcomes of IPS students of Class III SD Negeri 3 Teluk Rhu by applying STAD type cooperative learning model. STAD type cooperative learning model is a learning model that is implemented in the form of heterogeneous group work. Instrument of this research consists of learning tools and data collection instruments in the form of observation sheets and test kits. The study was conducted in March-April 2017. The data were analyzed using statistical analysis used for data analysis of teacher activity and student activity and improvement of student learning outcomes. Analysis of teacher and student activity is based on the observation scores made by the observer during the learning process with STAD type cooperative model. Analysis of student learning outcomes done after the implementation of daily test cycle I and cycle II. Based on scores of observation sheets of teacher and student activity, the following improvements are seen: teacher activity in cycle I reaches 54.17%, in cycle II increases 91.67% while student activity in cycle I is only 45.83%, in cycle II increases to 83,33%. Analysis of student learning result data showed improvement among others: learning mastery in cycle I 11 people, cycle II 25 people. after the application of cooperative learning model type STAD student learning outcomes increased from the average grade of 70.40 to 78.00. this means an increase of 10.79%. This shows that the application of STAD type cooperative learning model can improve the learning result of IPS students of Class III SD Negeri 3 Teluk Rhu.Keywords: STAD type cooperative model, IPS study results
PENGARUH NILAI TUKAR, INFLASI, VOLUME PERDAGANGAN, DAN DIVIDEND PAYOUT RATIO TERHADAP SHARE PRICE VOLATILITY PADA PERUSAHAAN YANG TERDAFTAR DALAM INDEKS KOMPAS100 TAHUN 2014 – 2018 Mastura mastura
IHTIYATH : Jurnal Manajemen Keuangan Syariah Vol 5 No 1 (2021): Vol 5 No 1 Juni 2021
Publisher : Fakultas Ekonomi dan Bisnis Islam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32505/ihtiyath.v5i1.2598

Abstract

This research aims to analyze partial and simultaneous influence between exchange rate, inflation, trading volume, and dividend payout ratio to share price volatility in Kompas100 index. This research uses 23 companies listed in Kompas100 index as a research sample during the period of 2014 to 2018, where sampling uses purposive sampling technique. In order to analyze, and test each research hypotheses, the technique used is panel data regression using the random effect model. The results of data analysis show that partially, the excgange rate, inflation, and trading volume have a positive and significant effect to share price volatility while the dividend payout ratio has a negative and significant effect to share price volatility. the results of data analysis show simultaneously, the exchange rate, inflation, trading volume, and dividend payout ratio have significant influence to share price volatility. The amount of testing the coefficient of determinastion (adjusted R square) is 0.416174, indicating that dependen variable which is share price volatility can be explained by independent variables those are exchange rate, inflation, trading volume, and dividend payout ratio was 41.6%, while 58.4% can be explained by the other variables outside the models
Ekstrak Etanol Bunga Kertas (Bougainvillea) Pink Sebagai Anti Oksidan dengan Menggunakan Metode DPPH Devi Haveni; Mastura Mastura; Ratih Permana Sari
KATALIS: Jurnal Penelitian Kimia dan Pendidikan Kimia Vol 2 No 1 (2019): KATALIS: Jurnal Penelitian Kimia dan Pendidikan Kimia
Publisher : Universitas Samudra

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

Abstract

Penelitian ini dilakukan untuk mengetahui kandungan senyawa metabolit sekunder di dalam ekstrak etanol bunga kertas dan mengetahui aktivitas ekstrak etanol bunga kertas sebagai antioksidan dengan menggunakan metode DPPH. Ekstrak etanol diperoleh melalui metode maserasi. Pengujian antioksidan dilakukan dengan metode DPPH (1,1-difenil-2-pikrilhidrazil). Ekstrak etanol bunga kertas memiliki kandungan metabolit sekunder golongan alkaloid, flavonoid, saponin, triterpenoid dan fenol. Hasil uji aktivitas antioksidan yang dilakukan menunjukkan nilai persen inhibisi secara berturut-turut pada konsentrasi 50 ppm sebesar 23,1771%, pada konsentrasi 75 ppm sebesar 45,7855%, pada konsentrasi 100 ppm sebesar 56,6449% dan 125 ppm sebesar 78,3121%. Nilai IC50 yang diperoleh yaitu 55,71 ppm menunjukkan aktivitas antioksidan yang kuat. Berdasarkan penelitian ini, ekstrak etanol bunga kertas (Bougainvillea) memiliki potensi sebagai antioksidan.
Online Dictionary and Manual Dictionary: Which One Is Used More? Aula Akramah; Audria Bella Alifva; Dewi Yani; Mastura Mastura; Zahratul Idami
English LAnguage Study and TEaching Vol 1, No 1 (2020): Vol 1 Nomor 1 2020 Elaste
Publisher : Universitas Serambi Mekkah

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (233.043 KB) | DOI: 10.32672/elaste.v1i1.2552

Abstract

This study aimed to find out the use of the manual dictionary and electronic dictionary in learning and daily activity by the students in the University of Serambi Mekkah, Banda Aceh. This study used descriptive qualitative method for the data collection. The population in this study were the students at the University of Serambi Mekkah and the sample used in this study was 30 English major students in the University of Serambi Mekkah. The researcher used a questionnaire and interview in collecting the data. In analyzing the data, the researcher used percentage formula. The result of the study showed that 63% of students often used the manual dictionary, 96% of students often used the electronic dictionary. Meanwhile, the students majoring at English department in the University of Serambi Mekkah commented about the benefit of using the dictionary was that it could help adding the vocabulary and made the learning process easier.
An Analysis of the Students’ Difficulties in Understanding Poetry Mastura Mastura
English LAnguage Study and TEaching Vol 3, No 2 (2022): ELASTE
Publisher : Universitas Serambi Mekkah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/elaste.v3i2.4738

Abstract

For Indonesian EFL (English as a Foreign language) learners, learning poetry in English is difficult. The purpose of this study is to know the difficulties in understanding poetry faced by students of the English Department of Universitas Serambi Mekkah. The total sample was 23 students from Semester 5 and 7 who had taken Poetry and Drama subject. This research is a descriptive method using a questionnaire and interview for the data collection. The finding shows that students have difficulties in understanding figurative language, proverbs, and the meanings of poetry. The interview data revealed the reluctance of the students in learning the subject. To conclude, the English Department students of Universitas Serambi Mekkah have poor English knowledge and low motivation towards learning the subject thus facing difficulties in understanding English poetry. It is suggested that the lecturer should use several strategies to make students motivated and ignite creativity among students when learning English poetry.
DETERMINAN KEPUTUSAN NASABAH BERTRANSAKSI DENGAN PT. BANK SYARIAH MANDIRI KC. LANGSA Miftahul Jannah; Abdul Hamid; Mastura Mastura; Tabrani Tabrani
Al-Hisab: Jurnal Ekonomi Syariah Vol 1 No 2 (2021): AL HISAB: Jurnal Ekonomi Syariah
Publisher : Sekolah Tinggi Ilmu Ekonomi Syariah Baktiya Aceh Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (639.092 KB) | DOI: 10.59755/alhisab.v1i2.72

Abstract

ABSTRACT One's decision-making arises as a reaction to a problem, meaning that there is a mismatch between the current case and the desired state, which requires consideration to make several alternative actions. The formulation of the problem in this study is to measure the effect of location variables (X1) and service quality (X2) on customer decisions to transact with PT. Bank Syariah Mandiri KC Langsa. The analysis technique in this research is multiple linear regression. The sample in this study amounted to 65 customers using quota sampling. The results of this study indicate that the location variable (X1) and service quality variable (X2) partially influence the customer's decision to transact with PT. Bank Syariah Mandiri KC Langsa. ABSTRAK Pengambilan keputusan seseorang muncul sebagai reaksi atas sebuah masalah, artinya adanya ketidaksesuaian antara perkara saat ini dengan keadaan yang diinginkan, yang membutuhkan pertimbangan untuk membuat beberapa tindakan alternatif. Rumusan masalah dalam penelitian ini untuk mengukur pengaruh variabel lokasi (X1) dan kualitas pelayanan (X2) terhadap keputusan nasabah bertransaksi dengan PT. Bank Syariah Mandiri KC Langsa. Teknik analisis dalam penelitian ii yaitu regresi linear berganda. Sampel dalam penelitian ini berjumlah 65 nasabah menggunakan quota sampling. Hasil penelitian ini menunjukkan bahwa variabel lokasi (X1) dan variabel kualitas pelayanan (X2) berpengaruh secara parsial terhadap keputusan nasabah bertransaksi dengan PT. Bank Syariah Mandiri KC Langsa. Kata Kunci : Lokasi, Kualitas Pelayanan, Keputusan Nasabah
DESAIN PENUNTUN PRAKTIKUM KIMIA BERBASIS BAHAN ALAM Mastura Mastura; Mauliza Mauliza; Nurhafidhah Nurhafidhah
JIPI (Jurnal IPA dan Pembelajaran IPA) Vol 1, No 2 (2017): Desember 2017
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jipi.v1i2.9695

Abstract

Abstrak. Tujuan penelitian ini adalah untuk (1) mendesain penuntun praktikum kimia SMA berbasis bahan alam, dan (2) mengetahui kelayakan penuntun praktikum kimia SMA berbasis bahan alam. Adapun penelitian ini menggunakan metode research and development (R D) dengan pendekatan kualitatif dekskriptif. Penelitian ini dilakukan di Kota Langsa dengan melibatkan tiga SMA Negeri yang ada di kota tersebut yaitu, SMA Negeri 2, SMA Negeri 3, dan SMA Negeri 4 Langsa. Data dalam penelitian ini diperoleh melalui teknik pengumpulan data dokumentasi, wawancara, dan angket. Teknik analisis data dilakukan dengan menggunakan rumus persentase dan diinterpretasikan untuk mengetahui validitas dan kelayakan penuntun praktikum kimia SMA berbasis bahan alam. Penelitian ini menghasilkan produk tepat guna berupa penuntun praktikum kimia SMA berbasis bahan alam. Hasil penelitian menunjukkan bahwa penuntun praktikum kimia SMA berbasis bahan alam yang telah didesain valid dan layak digunakan siswa SMA kelas XI. Persentase skor validitas diperoleh 72,3% dan persentase skor kelayakan diperoleh 72,7%. Hasil penelitian ini bermanfaat untuk menambah pengetahuan dan pengalaman tentang desain penuntun praktikum kimia, sebagai dasar untuk penelitian lebih lanjut untuk meningkatkan dan menambah wawasan bagi peneliti dalam mengembangkan ilmu pendidikan khususnya bagi guru mata pelajaran kimia.Kata Kunci: Penuntun Praktikum, Bahan Alam, Kimia, Kurikulum 2013 Abstract. The purpose of this research is to (1) design the guidance of chemistry practicum for SMA, and (2) to know the feasibility of guidance of chemistry based on natural materials for SMA. The research uses research and development (R D) method with qualitative approach dekskriptif. This research was conducted in Langsa City involving three SMA Negeri that exist in the city that is, SMA Negeri 2, SMA Negeri 3, and SMA Negeri 4 Langsa. The data in this study is obtained through data collection techniques documentation, interviews, and questionnaires. The data analysis technique is done by using percentage formula and interpreted to know the validity and feasibility of guidance of chemistry based on natural materials for SMA. This research produces the right product in the form of guidance of chemistry based on natural materials for SMA. The results showed that the guides of chemistry labs of high school based on natural materials that have been designed valid and proper use of high school students class XI. The percentage of validity score was obtained 72.3% and the percentage of eligibility score was 72.7%. The results of this research is useful to increase knowledge and experience about the chemistry lab design guide, as a basis for further research to increase and increase insight for researchers in developing science education especially for chemistry subject teachers.Keywords: Practical Guide, Natural Materials, Chemistry, Curriculum 2013 
Co-Authors ABDUL HAMID Audria Bella Alifva Aula Akramah Devi Haveni Dewi Yani Lamek Marpaung Lazim N Lazim N Mauliza Mauliza Miftahul Jannah Nurhafidhah Nurhafidhah Otang Kurniaman Partomuan Simanjuntak Ratih Permana Sari Tabrani Tabrani Tonel Barus Zahratul Idami