Articles

PENGEMBANGAN METODE ANALISIS RENIK SPESI Cr(VI) MENGGUNAKAN TEKNIK PRAKONSENTRASI BERBASIS ANALISIS INJEKSI ALIR Sulistyani, Sulistyani
Jurnal Penelitian Saintek Vol 17, No 1 (2012): APRIL 2012
Publisher : Jurnal Penelitian Saintek

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Abstract

Penelitian ini bertujuan untuk mengetahui kinerja metode prakonsentrasi spesi renik Cr(VI) secara non-kromatografi berbasis analisis injeksi alir (FIA) dengan teknik deteksi spektrofotometri fasa padat. Analisis sampel menggunakan kolom XAD-4 dengan aqua DM sebagai pembawa dan aseton sebagai eluen. Pengukuran spektrofotometri pada panjang gelombang 540 nm. Kondisi optimum pH kompleks Cr(VI)-DPC maupun pH retensi XAD terhadap Cr(VI)-DPC adalah 1. Kapasitas retensi XAD-4 pada penelitian ini adalah 0,12 mg Cr/ g XAD. Kajian parameter analitik menunjukkan bahwa kinerja metode ini cukup baik. Nilai presisi yang dinyatakan sebagai koefisien variasi kurang dari 5% pada konsentrasi renik (ppb). Kepekaan dari metode ini mencapai konsentrasi 0,77 ppb dan limit deteksi mencapai 4,5 ppb. Daerah linier dari konsentrasi diperoleh antara 40 ppb sampai 80 ppb dengan koefisien relasi 0,997. Nilai pemekatan (EF) dari prakonsentrasi dengan metode ini mencapai 14 kali. Dari hasil aplikasi metode, diperoleh konsentrasi spesi Cr(VI) yang terdapat dalam sampel air dari lingkungan industri pertambangan adalah masing-masing 2,67 ppm dan 1,38 ppm. Kata kunci:      prakonsentrasi, Cr(VI), XAD, DPC, FIA
ANALISIS KINERJA KOPERASI SYARIAH MELALUI KEMAMPUAN BERINOVASI, DAN ORIENTASI PASAR SERTA KOMITMEN DI KOTA SEMARANG Sulistyani, Sulistyani
- Vol 3, No 2 (2014): (Oktober 2014) etika dan relasi dalam kehidupan
Publisher : UNTAG Semarang

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Orientasi pasar adalah kegiatan untuk mencapai  tujuan perusahan dengan mengembangkan berbagai strategi pemasaran yaitu untuk meningkatkan profitabilitas perusahaan, dan untuk mencapai tingkat kemampu labaan yang wajar, Zaltman, Duncan dan Nolbele’s ( 1973)   inovasi adalah sebagai ide, latihan atau materi yang dirasakan, , yang dapat ditemukan dalam pelajaran organisasi.  Kinerja atau performance adalah segala sistem yang berhubungan dengan aktifitas dengan hasil (outcome) yang diperoleh. Tujuan penelitian ini adalah membuktikan bahwa Komimen, orientasi Pasar dan Kemampuan Berinovasi berpengaruh positip pada Kinerja., Manfaat dalam penelitian yaitu menemukan bukti empiris yang menunjukkan Komitman, Orientasi Pasar dan  Kemampuan Berinovasi mempengaruhi kinerja. Populasi dalam penelitian ini, adalah  pengurus Koperasi Syariah dikota Semarang. sebesar 11 . Sedangkan sampel dalam penelitian  ini tidak dipergunakan . karena jumlah koperasi  Syariah yang terbatas.  Jenis data yang digunakan dalam penelitian ini, yaitu data primer , karena yang diteliti adalah pengurus koperasi syariah,. Model penelitian ini adalah model kausalitas (hubungan/pengaruh sebab akibat) sehingga untuk menguji alat analisa yang dipergunakan dalam penelitian ini  adalah model SEM (Structural Equation Modeling)  yang dioperasikan melalui program AMOS (Analysis of Moment Stucture) Hasil penelitian menunjukkan bahwa model dalam penelitian ini sudah memenuhi kriteria Goodness of fit dan memenuhi syarat Regresion Weight (Chisqure=73,129, probability=0,102, AGFI=0,860, GFI=0,909,  CFI=0,98, TLI=0,973,  RMSEA=0,043), berarti orientasi pasar, kemampuan berinoasi dan Komitmen berpengaruh positi terhadap Kinerja koperasi syariah di kota Semarang Kata kunci: Kinerja, Koperasi Syariah, Inovasi, Orientasi Pasar, Komitmen Market orientation is an activity to achieve the goal of the company to develop a variety of marketing strategies is to increase the profitability of the company, and to achieve a level of profitability that is reasonable, Zaltman, Duncan and Nolbele's (1973) innovation is as an idea, practice or material that is perceived, which can be found in organizational learning. Performance or performance is any system that is associated with the activity with the results (outcomes) were obtained. The purpose of this study is to prove that the commitment to perform, market orientation and Ability to Innovate positive effect on performance., Benefits in research that find empirical evidence that shows the commitment of, Market Orientation and Ability to Innovate affect performance. The population in this study, is a cooperative board of Sharia in the city of Semarang. at 11. While the sample is not used. due to the limited number of Islamic cooperative. Data used in this study, namely the primary data, because the study is sharia cooperative management,. The research model is a model of causality (relationship / influence causal) so as to test the analytical tools used in this study is a model of SEM (Structural Equation Modeling) which is operated by AMOS (Analysis of Moment Stucture) results showed that the model in this study already meet the criteria for goodness of fit and qualify Regresion Weight (Chisqure = 73.129, probability = 0.102, AGFI = .860, GFI = .909, CFI = 0.98, TLI = .973, RMSEA = 0.043), mean market orientation, ability berinoasi and commitment positi effect against sharia cooperative performance in Semarang Keywords: Performance, Cooperative Sharia, Innovation, Market Orientation, Commitment.
The Effect of Multimedia Based Learning in Chemistry Teaching and Learning on Students’ Self-Regulated Learning Priyambodo, Erfan; Sulistyani, Sulistyani
Journal of Education and Learning (EduLearn) Vol 8, No 4: November 2014
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (100.283 KB) | DOI: 10.11591/edulearn.v8i4.384

Abstract

In recent years, the uses of Multimedia Based Learning (MBL) in classroom instruction increased widely. Overall, this implementation aims to improve students’ motivation and also their learning outcomes. This study was answering the effect of MBL toward students’ Self-Regulated Learning (SRL) in chemistry teaching and learning. The experiment was conducted in class XI of senior high school in Yogyakarta. Researchers create some computer based media for chemistry materials and continued with expert judgement of the media. Students’ data SRL were measured using validated questionnaire. The questionnaire consists of three components, i.e. metacognitive, motivation and behavior. The results showed that there was significant differences in SRL of students before and after participating in chemistry teaching and learning which applying MBL.
The effect of intelligence quotient, self-concept, school climate and student perceptions of teacher competence on learning outcomes economy. Sulistyani, Sulistyani; Purnomo, Edi; Nurdin, Nurdin
JEE (Jurnal Edukasi Ekobis) Vol 1, No 3 (2013): JEE (Jurnal Edukasi Ekobis)
Publisher : FKIP Unila

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Abstract

This research is aimed to determine the effect of intelligence quotient, self-concept, school climate and student perceptions of teacher competence on learning outcomes economy.Based on data analysis results: (1) There is a positive influence on learning IQ economy outcomes as indicated by the value of t count> t table is 5.469> 1.982 with a coefficient of determination (r2) of 0.214. (2) There is a positive influence of self-concept on learning outcomes demonstrated economic value t count> t table is 6.192> 1.982 with a a coefficient of determination (r2) of 0.258. (3) There is a positive influence school climate environment on learning outcomes demonstrated economic value t count> t table is 6.399> 1.982 with a coefficient of determination (r2) of 0.271. (4) There is a positive influence student perceptions of teacher competence on the results of the economic study demonstrated the value of t count> t table is 2.965> 1.982 with a coefficient of determination (r2) of 0.074. (5) There is a positive influence IQ, self-concept, school climate and student perceptions of teacher competence on learning outcomes ditujukkan economic value F count> F table is 36.292> 2.46 with a coefficient of determination (R2) of 0.576.Keywords: IQ, SC, SP, and LO
Faktor Risiko Kejadian Malaria Di Desa Lubuk Nipis Kecamatan Tanjung Agung Kabupaten Muara Enim Ahmadi, Supri; Sulistyani, Sulistyani; Raharjo, Mursid
JURNAL KESEHATAN LINGKUNGAN INDONESIA Vol 8, No 1 (2009): Vol 8, No 1 (2009)
Publisher : JURNAL KESEHATAN LINGKUNGAN INDONESIA

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ABSTRACT Background: Malaria was still a serious health problem in Indonesia. It was widely spread in many areas with various level of infection. In  2007,  Annual Malaria Incidence (AMI)   in Muara Enim district, was 24.77 0/00. It was higher than National Annual Malaria Incidence (AMI 10 0/00). The research aimed to find out  risk factors that influence malaria incidence in Muara Enim . Method: This study was designed as case control or retrospective study. As the case of the study, there were fifty four (54) malaria positive people were involved. Rapid survey was employed to select 54 respondents from negative of malaria. Thus, they were totally 108 respondents. Result: It was found three species of anopheles mosquitoes as suspected vectors, which are An. nigerimus, An. latifer and An. maculatus. Those species were found at  the puddles, rice field, pool, river, and public toilets. Factors that contributed to malaria incidence were the water bodies or ponds  around the house, not using bad net and coil to avoid mosquitoes. Conclusion: Most of the respondent had not used bed net while sleeping  as  risk factors to the incidence malaria in Muara Enim District. Key words : Malaria, environmental factor,  behavioral factor, Muara Enim
Faktor – Faktor Yang Berhubungan Dengan Kontaminasi Deterjen Pada Air Minum Isi Ulang Di Depot Air MInum Isi Ulang (DAMIU) Di Kabupaten Kendal Tahun 2009 Sulistyandari, Hartini; Sulistyani, Sulistyani; Raharjo, Mursid
JURNAL KESEHATAN LINGKUNGAN INDONESIA Vol 6, No 2 (2007): Vol 6, No 2 (2007)
Publisher : JURNAL KESEHATAN LINGKUNGAN INDONESIA

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ABSTRACT Background : People are very depends on mineral water supplies especially for drinks. The results from Central Java Health Laboratory on November 21st 2008 to 95 Mineral Water Refill Depo (DAMIU) at Kendal shows that 85% of the samples examined has Alkyl Benzena sulfonates (ABS) detergent around 0.03 – 0.06 ug/lt. The results shows that the quality of the refillable mineral waters in Kendal were contaminated by detergents. This research was done to examined the factors that correlated with the detergent contaminated to refillable mineral waters at Mineral Water Refill Depo in Kendal. Method : This research is an observational research using surveillance methods and a cross sectional approaches. This research is using a questionnaires which already passed the validity and reliability tests. Primary and secondary datas were examined and analysed using a chi square test method. Result : The results shows that from about 50 DAMIU : 18 DAMIUs (36%) does not have a standardized water supplies, 28 DAMIUs (56%) does not have a standardized equipments, 21 DAMIUSs (42%) does not have a standardized process, 27 DAMIUs (54%) does not have a standardized sanitation, and 30 DAMIUs (60%) were contaminated by detergents. Furthermore, factors that correlated with the detergents contamination on refillable mineral waters at mineral water depo (DAMIU) in Kendal at 2009 are the water supplies (p-value : 0.03), equipment (p-value : 0.01), the process (p-value : 0.001) and sanitation (p-value : 0.027). Conclusion : The suggestion are to the owners of the DAMIUs to have a valid laboratory tests, especially to those correlated with the water supplies, the delivery, the water tank and the preconsumable mineral water, at least every 6 (six) months, using a standardized equipments, having a standard operating procedures (SOP) to operate DAMIUs, do not clean the tank and gallon with soaps or detergents and the needs of routine supervising and surveillance from the Health Department and ASPADA. Keywords : DAMIU, Detergents, Kendal
PENGARUH KALSIUM TERHADAP TUMBUH KEMBANG GIGI GELIGI ANAK Shita, Amandia Dewi Permana; Sulistyani, Sulistyani
STOMATOGNATIC- Jurnal Kedokteran Gigi Vol 7, No 3 (2010)
Publisher : Fakultas Kedokteran Gigi Universitas Jember

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Abstract

Adequate amounts of Calcium ions are essential for the developmental of enamel, dentin, and cementum. The delivery of adequate amounts of calcium to the dental tissues during developmental is essentially dependent on the maintenance of normal calcium concentrations in the extracellular fluids. Since the homeostatic mechanisms controlling the extracellular calcium ions concentration are highly efficient, only the most severe forms of calcium deprivation can result inhypocalcification of the dental tissues. Genetic defects or deficiencies of nutrients in addition to calcium may result in the formation of abnormal enamel, dentin or cementum.
Penelitian Pengaruh Derajat Keasaman Pada Pencelupan Batik Sutera Subardjo, Subardjo; Sulistyani, Sulistyani
Dinamika Kerajinan dan Batik: Majalah Ilmiah No 10 (1992): Dinamika Kerajinan dan Batik
Publisher : Balai Besar Kerajinan dan Batik

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3105.672 KB) | DOI: 10.22322/dkb.v0i10.984

Abstract

     Keterbatasan sifat bahan sutera untuk batik telah mendorong dilakukannya penelitian mengenai optimalisasi proses pencelupan. Dalam penelitian ini dilakukan pencelupan sutera dengan zat warna reaktif dan indigosol dengan variasi pH:4, 5, 6 , 7 dan 8. Sebagai pembanding dilakukan pencelupan untuk kedua zat warna tersebut pada kondisi normal. Dari hasil pengujian ternyata derajat keasaman berpengaruh terhadap kekuatan tarik dan beda warna.     Penelitian memberikan hasil terbaik untuk penggunaan zat warna reaktif pada kisaran pH: 7-9 sedang untuk zat warna indigosol pada kisaran pH : 3-5.
THE EXPRESSIONS OF CORRECTIVE FEEDBACK IN SECOND LANGUAGE CLASSROOM Sulistyani, Sulistyani
English Teaching Journal Vol 2, No 2 (2014)
Publisher : English Teaching Journal

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This study aims to review the teacher’s expressions which constitute teacher’s corrective feedbacks (CFs) in oral production and examine the ways the teachers expression revealing teacher’s CFs. The data are in the forms of teachers utterances obtained from four research articles. The result shows that teacher expressions which  constitute CFs cover explicit correction, recast, clarification request, metalinguistic, elicitation, and repetition. While the ways which reveal teacher’s CFs are found to be reduction, negation, and  expansion. The area to be corrected commonly involves phonological, grammatical, and lexical errors. So, it can be concluded that in a second language classroom instruction, teacher’s CFs expressions lead learners erroneous utterances to be resolved because by saying "Sorry?" (clarification request), a teacher implicitly asks a language learner to reformulate what he has just been said which is usually called repair. Thus, it implies that the teacher’s CFs expressions in a second language classroom instruction are facilitative to resolve learners problematic linguistic accuracy. In Indonesia, where English is used as foreign language, CFs are important to be practiced. Therefore, CF’s expressions are necessary to be introduced as a model to practice for the improvement of the linguistic competence especially in English speaking as it is assumed that excellence in speaking is expected to increase Indonesian human capital particularly in global competition and international communication.
FAKTOR-FAKTOR YANG MEMPENGARUHI ANGKA KUMAN PADA PERALATAN MAKAN DI LAPAS WANITA KLAS IIA SEMARANG Rahmadiani, Rona Arundina; Sulistyani, Sulistyani; Dewanti, Nikie Astorina Yunita
Jurnal Kesehatan Masyarakat (e-Journal) Vol 4, No 1 (2016): Jurnal Kesehatan Masyarakat (e-Journal)
Publisher : Fakultas Kesehatan Masyarakat

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Prison is a place coaching and protege correctional prisoners in Indonesia. They have the same rights as other members of society to achieve the level of health, one of which is food. Therefore, food hygiene are concerned. Tableware plays an important role in the occurrence of food poisoning. According to data from the Directorate General of Communicable Disease Control, 30% of cases of poisoning caused by food or catering cutlery services that are not clean. Kepmenkes no.1908 2003 mentions the equipment in direct contact with food must not contain germs> 100 colonies / cm2. This study aims to determine the factors that influence the number of bacteria on the cutlery in the female prison Semarang class IIA. Research conducted on 51 respondents with cross sectional approach. The research result shows the characteristics of respondents aged 26-35 is the most respondents with elementary and junior high education level and length of stay 1-5 years. Conclusion of the study is a factor that affects the amount of germs among other equipment washing technique (p = 0.002) and storage of cutlery (p = 0.000). Suggestion research is necessary to hold training equipment washing and improve tableware storage facilities.