Rini Ekawati
Jurusan Psikologi, Fakultas Ilmu Pendidikan, Universitas Negeri Semarang

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PENGARUH AKTIVASI ZEOLIT DENGAN KMnO4 , K2S2O8 DAN H2SO4 TERHADAP ADSORPSIFITAS ION Na+ DAN Mg2+ DIUJIKAN PADA AIR TANAH KARIMUNJAWA BLOK I Ekawati, Rini; Taslimah, Taslimah; Pardoyo, Pardoyo
JURNAL SAINS DAN MATEMATIKA Volume 18 Issue 4 Year 2010
Publisher : JURNAL SAINS DAN MATEMATIKA

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Abstract

ABSTRAK---Telah dilakukan penelitian untuk mengaktivasi zeolit alam menggunakan H2SO4, KMnO4 dan K2S2O8 untuk mengadsorpsi ion Na+ dan Mg2+ dalam air tanah Karimunjawa Blok I. Perlakuan meliputi proses refluks dalam campuran H2SO4-KMnO4 atau H2SO4-K2S2O8 pada suhu 80 ºC selama 5 jam, dilanjutkan pencucian sampai pH mendekati netral dan pengeringan pada suhu 80 ºC selama 12 jam. Hasil penelitian menunjukkan aktivasi dengan H2SO4-KMnO4 meningkatkan rasio Si/Al dari 5,46 menjadi 7,84, luas permukaan, volume dan ukuran pori. Sedangkan dengan H2SO4-K2S2O8 meningkatkan rasio Si/Al menjadi 6,38, luas permukaan dan volume pori sebaliknya ukuran pori mengalami penurunan. Zeolit aktivasi dengan H2SO4-KMnO4 mempunyai daya adsorpsi terhadap ion Na+ dan Mg2+ paling besar dibanding dengan zeolit aktivasi dengan H2SO4-K2S2O8 dan zeolit alam. Persentase penurunan ion Na+ berturut-turut 80,38%, 54,24% dan 31,28% dari kadar Na+ mula-mula 784,74 ppm sedangkan ion Mg2+ berturut turut 22,47%, 17,05% dan 15,93% dari kadar Mg2+ mula-mula 477,19 ppm.Kata kunci: aktivasi zeolit, ion Na+ dan Mg+, karimunjawa SUMMARY---It has been done a research to activate natural zeolite with H2SO4, KMnO4 and K2S2O8 to adsorp Na+ and Mg2+ ions in groundwater of Karimunjawa Block I. The treatments of natural zeolite included refluk process in mixture of H2SO4-KMnO4 or H2SO4-K2S2O8 at 80 ºC for 5 hours, and then continued cleaning until neutral pH and dried at 80 ºC for 12 hours. The result showed that activation using H2SO4-KMnO4 increased Si/Al ratio from 5.46 to 7.84, surface area, total pore volume, and average of pore radius. While using H2SO4-K2S2O8 increased Si/Al ratio to 6.38, surface area, and total pore volume otherwise the average of poreradius decreased. Adsorption Na+ and Mg2+ ions of activated zeolite by H2SO4-KMnO4 was highest compared tothe activated zeolite by H2SO4-K2S2O8 and natural zeolite. The decreasing of precentage of Na+ ions were 80.38%, 54.24% and 31.28% from the first concentration 784.74 ppm since Mg2+ ions were 22.47%, 17.05% and 15.93% from the first concentration 477.19 ppm.Keywords: zeolite activation, Na+ and Mg2+ ions, karimunjawa
KETIDAKPATUHAN PENDERITA DIABETES DALAM MENJALANI PENGOBATAN (Studi Kasus Di Desa Kaligayam Kecamatan Talang Kabupaten Tegal) Ekawati, Rini
Intuisi : Jurnal Psikologi Ilmiah Vol 1, No 1 (2009): Maret 2009
Publisher : Intuisi : Jurnal Psikologi Ilmiah

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The research is aimed to find out what are the factors that influenced non adherence of diabetics regiment behavior, to find out the kinds of non adherence diabetics behavior, and to find out what is the reason that caused diabetics does not adherence to take a medical treatment. The subjects of this research were 2 people; they are diabetics, who do not have adherence behavior to experiencing medication, they are more than 50 years old, and have suffered from diabetes for more than 3 years. The data were collected with 3 methods that are observation and interview methods and psychological testing (DAM), and tested with interview and observation result transcript analysis, and interpretation of psychological test result. Based on the result, there are 7 factors that influencing non adherence behavior of diabetics on taking the medical treatments, they are patients have wrong understanding of diabetes experrancing disease, lack of knowledge about a risk if impinge the treatment regiment (medication), difficulties of communication between the doctor and patients, the wrong belief and perception about the disease, family and social (significant others) supports, attitude towards health treatment system, and individual characteristic of the patients, The result of research also shows that kinds of non adherence behavior of diabetics on experiencing treatment regiment (medication) can be seen from 5 matters, they are the irregular schedule of doctor control, stopping consuming medicine that not following the rules, impinge the rules of eat pattern which doctor has suggested, irregular exercise, and irregular and even undone bloods sugar levels checking. The reasons of non adherence diabetics on experiencing treatment regiment (medication), they are abundant trust of traditional medicine, feeling slack and tire feeling of the patient, bad communication between doctor and patients. Also, the diabetics personality such as less confidence level tendencies, less acceptance of challenge and reality, and unstable emotional condition influence a non adherence diabetic s behavior in experiencing treatment regiment (medication).
PENERAPAN MODEL PEMBELAJARAN KOOPERATIF TIPE NUMBERED HEADS TOGETHER (NHT) UNTUK MENINGKATKAN HASIL BELAJAR MATEMATIKA SISWA KELAS VIII MTS NAHDIYAH TAPUNG HILIR Ekawati, Rini; Solfitri, Titi; Zulkarnain, Zulkarnain
Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan Vol 5: Edisi 2 Juli-Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan

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Abstract : This study aims to improve the learning process and improve the learning outcomes of students of class VIII MTS Nahdiyah Tapung Hilir odd semester of the academic year 2017/2018. Form of research conducted is action research (PTK) with 2 cycles. The subjects consisted of 14 male students and 21 female students with heterogeneous ability. Instrument in this research of development there are 2 that is learning devuce and instrument dara collection. Instrument of data collection in this research is observation sheet and test of mathematics learning result. The observation sheets were analyzed descriptively qualitatively, while the mathematics learning outcomes were analyzed descriptively quantitatively. From the qualitative analysis it can be seen that there is improvement of learning process from before action to cycle I and cycle II. Students are seen actively participating and becoming more independent in the learning process. The results of this study indicate the number of students who reached the KKM increased from the basic score of 16 students (45.71%) to UH I amounted to 28b people 80%) and UH 2 amounted to 31 people (88,57%)..The result of this research shows that applying cooperative learning model of Numbered Heads Together (NHT) approach can improve learning process and can remind learning result mathematics students of class VIII MTS Nahdiyah Tapung Hilir academic year 2017/2018 on the subject matter of analyze data besed on data attribution, mean, median, mode and data distribution to take conclusion. And explain the empirical an theoretical opportunies of an event from an experiment.Keywords: Mathematics learning outcomes, Cooperative learning, Numbered Heads Together (NHT), Classroom Action Research.