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. Suryawati
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Kualitas Tes dan Hasil Belajar Matematika Siswa Kelas VIII SMP Negeri 9 Banda Aceh Tahun Pelajaran 2011/2012 . Suryawati; . Yulfikar
Jurnal Peluang Vol 1, No 1 (2012): Volume 1 No.1, Oktober 2012
Publisher : Universitas Syiah Kuala

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AbstractThis research related to the quality of the test and math learning outcomes, conducted at SMP Negeri 9 Banda Aceh entitled "Quality of test and the mathematics learning outcomes Class VIII SMP Negeri 9 Banda Aceh Academic Year 2011/2012”. The aim is to figure out the learning outcomes and the quality of math test of students grade VIII SMP Negeri 1 Banda Aceh Academic Year 2011/2012. Quality of test includes the analysis of validity, reliability, difficulty level, item discrimination and distractor analysis. The population in this research is all student class VIII consists of VIII-1 with 21 students, class VIII-2 with 21 students, class VIII-3 with 21 students and class VIII-4 with 19 students. The total samples are 82 students with the number of multiple choice test is 25 questions and 5 questions of essay.  Data collections in this research by using documentation technique, by checking the students answer sheet in even semester examination academic year 2011/2012. The results shows that (1) the validity of multiples choice questions was low and sufficient for essay, (2) the reliability of multiples choice and essay were good enough, (3) difficulty level of the multiple choice and essay questions were good enough, (4) item discrimination of multiple choice questions still low but the essay questions in good categorize for 60% and bad for 40%. The quality of mathematics test in SMP Negeri 9 Banda Aceh is low for multiple choice questions and sufficient for essay. Thus we can conclude the analysis of learning outcomes data grade VIII SMP 9 Banda Aceh in the classical mastery learning achievement is only 3.66%. In this case we can conclude that the classical mastery learning is very low (not complete).  Key Words: Quality of test and math learning outcomes
The antimalarial activity of the extract of the neem leaves (Azadirachta indica, A. Juss) on Plasmodium falciparum in vitro Hanifah Yusuf; . Suryawati; . Maryatun
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 1, No 1 (2011): Life Sciences
Publisher : Syiah Kuala University

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.  Malaria is a life-threatening disease due to the development of resistance by the most lethal causative parasitic species mainly Plasmodium falciparum. One of a great challenges in malaria controlling program is P.falciparum that has been resistant to the most commonly available antimalarials. New drugs with specific structures and mode of actions are urgently required to treat sensitive and drug-resistant strains of malaria parasites. This study was designed to know the antimalarial activity of the extract of the neem leaves (Azadirachta indica A.Juss) on the growth stages of P. falciparumFCR-3. The experimental laboratoric study used “post-test only with control design”. RPMI 1640 used as culture medium for cultivation of P. falciparum. Treated drug was the extract of neem leaves dissolved in dimethylsulfooxide and prepared into 7 levels concentration (3,125; 6,25; 12,5; 25; 50; 100 and 200 ug/mL). Negative control was culture medium with the malarial parasites. After cultured, synchronized, micromalarialculture were divided into control and treated groups then  incubated in CO2 Candle Jar at 370 C for 72 hour. Each 8 hour the percentage of parasitemia were measured for observing the activity of the extract on the growth stages of P. falciparum. After incubation, supernatant fluid was removed without disturbing the erythrocyte layer. Parasitemia was calculated by made the thin blood smear from the erythrocyte layer and stained with 10% Giemsa for 30 minutes. The antimalarial activity of the extract was calculated by counted the fifty percent of growth inhibition 50 (IC50) using probit analysis. The result showed that the neem leaves extract can inhibit the growth of P. falciparum FCR-3 on mature schizont stage and the fifty percent inhibitory concentration (IC50) of the extract was 3,86 µg/ml after 32 hour incubating. The result indicated that the extract has an antimalarial activity on P. falciparumFCR-3 in vitro
The isolation and identification of antimalarial agents of the n-hexane fraction of the neem leaves (Azadirachta indica A. Juss) . Suryawati; Hanifah Yusuf; . Sofia
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 1, No 1 (2011): Life Sciences
Publisher : Syiah Kuala University

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 Abstract. Following the study which confirmed the antimalarial activity of the n-hexane fraction of the neem leaves (Azadirachta indica A.Juss), a research that aimed to reveal the active compounds act as antimalarial agents had been conducted. In this study, the n-hexane fraction of neem leaves were analyzed using the phytochemical, spectroscopic and chromatographic methods.  The chemical compounds, suspected to have an antimalarial activity, were isolated using the thin-layer chromatographic method with several solvents which different in their polarity. The visualizing reagents were used to characterize the compounds. The result showed that the n-hexane fraction of neem leaves contained of steroids, terpenoids and fenols. Analysis by gas chromatography-mass spectroscopy showed that fenol derivatives existed in the largest amount. The compounds were identified as benzyl benzoat (25.63%), tetracosane (17.51%) and hexadecanal (14.61%)
Co-Authors . Maryatun . Sofia . Yulfikar Hanifah Yusuf