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All Journal Paediatrica Indonesiana Atrium Pendidikan Biologi Warta AKAB
Nurdiani Nurdiani
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Environmental Science Health Professions Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Medicine & Pharmacology Other

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The Effect of Giving a Point System in the Model Make A Match Learning Against Participants Learning Competencies Education in Class VIII Junior High School 21 Padang Nurdiani Nurdiani; Relsas Yogica; Yosi Laila Rahmi; S. Syamsurizal
ATRIUM PENDIDIKAN BIOLOGI Vol 4, No 2 (2019): Atrium Pendidikan Biologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/apb.v4i2.5791

Abstract

The research problem at junior high school 21 Padang is the learning model that is less varied, the low learning competencies of students from aspects of knowledge, attitudes, and skills. Efforts that can be made are applying the Make A Match learning model on respiratory system material at junior high school 21 Padang. This type of research is an experimental study with a randomized control group posttest only design study design. The population in this study were all class VIII junior high school 21 Padang which were registered in the 2018/2019 Academic Year totaling eight classes. Sampling was done using simple random sampling technique, which was chosen as the research sample was class VIII.4 as the experimental class and class VIII.5 as the control class. The instruments used were in the form of posttest questions for knowledge competencies, observation sheets for attitude and skills competencies. The hypothesis in this study was tested using the t-test. Based on the results of the students' competency research, the tcount was 3.55> ttable 1.67, in the attitude competency tcount 2.64> ttable 1.67, and in the competency of skills tcount 2.54> ttable 1.67. The conclusion of the study is that the application of the Make A Match model can improve the competency of knowledge, attitudes, and skills of class VIII students of SMPN 21 Padang.
Pengolahan Limbah Industri Cat Dengan Biokoagulan Biji Kelor (Moringa Seeds) Nurdiani Nurdiani
Journal Warta AKAB Vol 45, No 1 (2021): Warta AKAB
Publisher : Politeknik AKA Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55075/wa.v45i1.5

Abstract

 Industrialisasi terutama di negara-negara yang sedang berkembang mengalami pertumbuhan yang sangat pesat. Kondisi ini belum diikuti dengan pengolahan limbah industri yang memadai sehingga masih banyak industri yang membuang limbahnya langsung ke lingkungan. Salah satu cara dalam mengolah limbah cair industri adalah dengan proses koagulasi flokulasi. Koagulan yang dapat digunakan bisa dari bahan kimia ataupun bahan alam atau yang disebut biokoagulan. Biji kelor adalah salah satu biokoagulan yang mempunyai kemampuan dalam menjerap polutan yang ada dalam suatu limbah cair.  Tujuan dari penelitian ini adalah untuk mengetahui  kemampuan dan keefektifan biji kelor sebagai biokoagulan dalam menurunkan kadar fenol yang ada dalam suatu limbah cair cat. Hasilnya menunjukkan bahwa pengolahan limbah cat khususnya dalam menurunkan kadar fenol dengan biokoagulan biji kelor terbukti efektif yaitu sebesar 26% pada pengenceran 1000x dan 33% pada pengenceran 2000x. Hal ini disebabkan karena adanya gaya van der waals antara senyawa 4-alfa-4- rhamnosyloxybenzil-isothiocyanate dalam biji kelor yang cenderung bermuatan positif untuk mengoksidasi senyawa-senyawa fenolik pada limbah. Untuk mengurangi kadar padatan tersuspensi dan kadar bahan organik serta anorganik dalam limbah cat khususnya kandungan fenol dengan biokoagulan belum memberikan hasil yang signifikan.
Obesity among children aged 10-13 years in public and private elementary schools Evi Kamelia; Nurdiani Nurdiani; Tiansa Sembiring; Hakimi Hakimi; Iskandar Z Lubis
Paediatrica Indonesiana Vol 43 No 2 (2003): March 2003
Publisher : Indonesian Pediatric Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (256.551 KB) | DOI: 10.14238/pi43.2.2003.38-41

Abstract

Background In the last few years, the prevalence of obesity amongIndonesian children has been beginning to increase slowly, butstudies and publications about obesity are limited. In accordancewith the improvement of social economic and child health, obesitycan be seen more frequently as a problem in children.Objective To evaluate and compare the prevalence and relatedfactors of obesity among children 10-13 year-old who were stu-dents of two kinds of school, namely public and private elementaryschool.Methods A cross sectional study was done from October untilDecember 1995 on 276 elementary school students aged 10-13years consisting of 138 public and 138 private elementary schoolstudents. Data were collected by a questionnaire including anam-nesis of family history and type of daily diet, physical examination,and anthropometric measurement.Results The prevalence of obesity among children in the publicand private elementary schools was 9% and 20% respectively,which showed a significant difference (p<0.01). The prevalence ofobesity among children was significantly related to parents’ wel-fare, excessive daily calorie intake, level of physical activity, andobesity problem in the family.Conclusion The prevalence of obesity in students of private andpublic elementary schools was 20% and 9% respectively. Socialeconomic level, calorie intake, sport activities, and obesity prob-lems in the family are factors related to the prevalence of childobesity
Co-Authors Evi Kamelia Hakimi Hakimi Iskandar Z Lubis Relsas Yogica, Relsas S. Syamsurizal Tiansa Sembiring Yosi Laila Rahmi