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All Journal Lantanida Journal Educator Development Journal
Safrijal Safrijal
Fakultas Tarbiyah Dan Keguruan UIN Ar-Raniry Banda Aceh
Chemical Engineering, Chemistry & Bioengineering Chemistry Education Languange, Linguistic, Communication & Media Library & Information Science Neuroscience

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Journal : Lantanida Journal

 1 
MODEL PEMBELAJARAN INKUIRI TERINTERNALISASI AYAT-AYAT AL-QUR’AN UNTUK MENINGKATKAN PEMAHAMAN KONSEP LARUTAN PENYANGGA DAN KARAKTER ISLAMI SISWA Safrijal Safrijal
Lantanida Journal Vol 3, No 1 (2015)
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (769.45 KB) | DOI: 10.22373/lj.v3i1.1832

Abstract

The research was motivated by rise of student behavior who have not reflected noble character and still rarity of teacher internalize the chemical in the verses of the Qur'an. This research aim to determine the application of inquiry learning model internalized the verses of the Qur'an on the concept of buffer solution and get an idea of the level of students 'understanding of concepts, and obtain a description of Islamic character student responses on the implementation of inquiry learning model internalized the verses of the Qur' 's. The research method used was a quasi-experimental design with one group pretest posttest design. Sampling technique is purposive sampling. The subject in this study is XIIA2 grader who amounted to 30 people, consisting of 8 men and 22 women. The data was collected using a pretest and posttest for understanding concepts, observation sheet to observe Islamic character, LKS for inquiry learning activities and a questionnaire to determine students' responses to the implementation of inquiry learning model internalized the verses of the Qur'an. Data processing is performed with N-gain test pretest and posttest values of the individual students, the value of N-gain of 0.80 which is higher categories were 19 students (63.33%) and N-gain value of 0.66 was considered a total of 11 students (36.67%), and obtained an overall average of the N-average gain of 0.78 is considered high. Based on the results of t-test (paired sample test) obtained -thitung
UJI AKTIVITAS ANTIOKSIDAN DAUN BENALU KOPI (Loranthus Ferrugineus Roxb.) DENGAN METODE DPPH (1,1 – Difenil -2- Pikrilhidrazil) Muammar Yulian; Safrijal Safrijal
Lantanida Journal Vol 6, No 2 (2018)
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (512.281 KB) | DOI: 10.22373/lj.v6i2.4127

Abstract

The study about antioxidant activity test of coffee parasite leaves (Loranthus ferrugineus Roxb.) by 1,1-diphenyl-2-pikrilhidrazyl (DPPH) method has been done. The aim of this study was to determine the content and activity of secondary metabolites, flavonoids and antioxidant, which found in the coffee parasite leaves. Dry powder of parasite coffee leaves (Loranthus ferrugineus Roxb.) as much as 0.5 kg were macerated by 2 L of ethanol solvent at room temperature for 4 x 24 hours, then mixed and filtered. Ethanol filtrate was evaporated at 30-40°C by using a rotary evaporator to obtain the crude extract of coffee parasite leaves. The results of the phytochemical screening showed positively that the extract was containing alkaloid, flavonoids, saponins, tannins and steroid compounds.The results of the antioxidant activity test by using DPPH method was obtained that the amount of antioxidant activity of the samples of ethanol extract had a very strong antioxidant activity against radical DPPH 0.05 mM, with IC50 values was obtained 6.063 ppm. Whereas, for comparison of ascorbic acid was about 3.127 ppm.
Co-Authors Adean Mayasri Mesi Fittriah Muammar Yulian