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SILICA PURIFICATION FORM MERAPI VOLCANO SAND AS PHOTOVOLTAIC RAW MATERIALS Sulistiyani Sulistiyani; Erfan Priyambodo; Larasti Yogantari
Jurnal Sains Dasar Vol 4, No 2 (2015): October 2015
Publisher : Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (218.58 KB) | DOI: 10.21831/jsd.v4i2.9087

Abstract

Purification of silica sand volcanic Mount Merapi has been done, for raw material photovoltaic. Leaching purification process is done using aqua regia solution, H2SO4, and HCl. Purification of silica sand of Mount Merapi as a raw material photovoltaic assumes that photovoltaic technologies that utilize solar energy is quite affordable, do not run out, and clean so that it will provide long term benefits are substantial. Stage purification process through grinding up to size 60 mesh, iron using magnetic separation, leaching of acid and alkaline leaching. Characterization of the samples using XRD and XRF. The result showed that Mount Merapi volcanic sand containing silica is high at 48-50%. XRD characterization results indicate that the silica in sand samples well as silicon dioxide or mineral has amorphous structure. Among aqua regia, H2SO4 and HCl leaching that has the ability to nicest namely the concentration of concentrated HCl and purified silica has a purity of 59%. Keywords: purification, silica, volcano sand
KONTRIBUSI KOLAM IKAN "YUMINA BUMINA" SEBAGAI UPAYA PENINGKATAN PENDAPATAN KELUARGA DIDESA JAMPANG BOGOR Rakhmawati Oktavianna; Aditya Pratama; sulistiyani sulistiyani
Economy Deposit Journal (E-DJ) Vol 1 No 2 (2019): Economy Deposit Journal (E-DJ)
Publisher : Fakultas Ekonomi Universitas Indonesia Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (591.066 KB) | DOI: 10.36090/e-dj.v1i2.572

Abstract

Jampang Village is one of the villages in the Kemang sub-district area and is included in the Bogor district. Jampang Village has been named the biggest fish producing village in Bogor Regency. Fish cultivation is the biggest source of livelihood for the residents of Jampang Village. The number of people as freshwater fish aquaculture practitioners is able to produce several innovations in the use of ponds that are named YUMINA ponds (vegetables and fish). Yumina Bumina Pond is a pond that not only produces freshwater fish but is also able to produce certain vegetables and fruits by utilizing freshwater fish farming. The formulation of the problem in this study are: How is the contribution of the fish pond "Yumina Bumina" as an effort to increase family income in the Village Jampang Bogor؟. The purpose of this study was to analyze the contribution of the fish pond "Yumina Bumina" as an effort to increase family income in the village of Jampang, Bogor. Data analysis methods in this study have several stages that must be met. The first stage is the stage of observation - this stage is the stage of data collection using observation techniques - interview and documentation techniques. The second stage is the stage of redu redu data ، with this stage as the process of selection and focusing of existing data in the field. The third step is the data presentation stage - this stage compiles all the information that has been collected. The fourth stage is the stage of drawing conclusions - this stage is the last stage of data analysis. The location of this research is in the village of Jampang ، Bogor and the sample of this study is the sluice fish farmers in the village of Jampang ، Bogor
Eksplorasi Tumbuhan Obat Hutan Berkhasiat Inhibitor HMG-KoA Reduktase (Exploration of Medicinal Forest Plants with HMG-CoA Reductase Inhibitory Activity) Sulistiyani Sulistiyani; Rita K Sari; Wulan Triwahyuni
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 15, No 2 (2017): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (456.092 KB) | DOI: 10.51850/jitkt.v15i2.393

Abstract

Five medicinal forest plants are potential candidates to be developed as cholesterol-reducing herbal product. The objective of this research is to explore the potency of the leaf of pulai ((Alstonia scholaris, R.Br), jabon merah (Antocephalus macrophyllus), jati belanda (Guazuma ulmifolia), mindi (Melia azedarach), and surian (Toona sinensis) based on their main secondary metabolic contents and to study their activity as HMG-CoA reductase inhibitor, an enzyme key in the regulation of cholesterol biosynthesis. Dried leaves materials were prepared from the each plant by standard procedure and their pythochemicals contents were determined qualitatively. Subsequently, flavonoid fractions from the leaves of all five plants were prepared, and alkaloid fraction was prepared from the leaf of pulai only. The flavonoid content was determined using quercetin as standard. The effect of each samples on the HMG-CoA reductase activity were analyzed using HMGR in vitro assay kit. At concentration of 20 ppm jati belanda leaf extract, however, showed the highest inhibitory activity which was similar to quercetin (5 ppm) as well as pravastatin control inhibitor. Further analysis showed that extracts from leaves of all plants tested were shown to inhibit the HMG-CoA reductase with IC50 values ranging from 7.53 to 52.62 ppm.Keywords: HMG-KoA reductase inhibitor, in vitro assay, medicinal forest plant exploration
Pengaruh Modul Pembelajaran Berbasis Problem Based Learning terhadap Hasil Belajar Sulistiyani Sulistiyani
SAP (Susunan Artikel Pendidikan) Vol 2, No 2 (2017): SAP
Publisher : Universitas Indraprasta PGRI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (107.645 KB) | DOI: 10.30998/sap.v2i2.2086

Abstract

The purpose of this study is to analyze (1) the validity and (2) the effectiveness of a problem-based learning module of economics for class XI IPS in second semester. It is a research on the effect of the use of problem-based learning module of economics for class XI in second semester on the improvement of the students? reliable learning results in Economics. The population of this research is 165 students of Class XI of SMA Negeri 1, Bandar Sribhawono, Lampung Timur, in Academic Year 2014/2015. The research samples consisting of 60 students: 30 in control class and 30 in experimental class are taken using a purposive sampling technique. The problem-based learning module of economics for class XI in second semester is effective in improving students? learning results, as indicated by the average score of the learning result of the control class and the experimental class, namely: 78.57 and 83.47 respectively. This indicates that the learning result of the experimental class are more excellent than that of the class control. The significance value of 2-tailed t test is 0.003, which is less than 0.050, meaning that the proposed H1 is rejected. It shows that there is a difference in students? average learning results between the students of the control class and those of the experimental class. In conclusion, the improvement of the learning result of the experimental class is better than that of the control class.
Beberapa Faktor yang Berhubungan dengan Kontaminasi Mikroorganisme pada Jamu Gendong Di Kota Semarang Sulistiyani Sulistiyani; Siti Thomas Zulaikhah
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 23, No 3 (2006)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2006.23.3.169

Abstract

The objective of this study was to know some factors related to microbial contamination in herbal medicine products at Semarang City. This study was conducted by descriptive method employing cross sectional design in which samples were taken by purposive random sampling. The results showed that Escherichia coli, Salmonella, Staphylococcus aureus, Pseudomonas aeruginosa were identified. The number of fungi exceeded the standard indicating that 62.5% of the herbal medicines surveyed did not meet the required standard of Kepmenkes no. 661/Menkes/SK/VII/1994. The relationship between the quality of herbal row material, processing, and serving to the microbial contamination in herbal medicine products was observed.
IMPLEMENTASI KEBIJAKAN DAN PEMBERDAYAAN MASYARAKAT DALAM UPAYA PENANGANAN STUNTING DI DESA TIENG KABUPATEN WONOSOBO Febru Akhmad Aldy; Salsabila Aulia Fauzi; Fifi Nur Alfiyah; Rifqi Akmal Zaky; Dian Agustin; Sulistiyani Sulistiyani; Wafiq Hana’ Alhafidz; Ahmad Ihyar Rifai; Ainun Khabib
Jurnal Pengabdian Kesehatan Masyarakat Vol 3, No 1 (2022): Mei : Jurnal Pengabdian Kesehatan Masyarakat
Publisher : Program Studi Kesehatan Masyarakat Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jpkm.v2i2.13999

Abstract

Stunting merupakan gangguan pertumbuhan dan perkembangan yang dialami oleh anak-anak. Kondisi ini dapat dilihat dari ciri fisik anak, seperti tinggi badan yang jauh di bawah rata-rata anak seusianya. Tujuan kegiatan pengabdian ini untuk menmplementasikan Kebijakan dan melakukan pemberdayaan masyarakat dalam upaya penanganan stunting di desa Tieng  Kabupaten Wonosobo,  Metode kegiatan yang digunakan oleh penulis yaitu metode pengumpulan data melalui wawancara secara langsung dengan narasumber terkait dan melakukan monitoring serta mengevaluasi kultur kondisi yang ada di desa Tieng. Metode observasi dan pengumpulan data adalah melalui metode dokumentasi yaitu melakukan wawancara langsung dengan kader PKK, bidan desa, beberapa warga yang memiliki balita dan melakukan monitoring serta evaluasi kultur desa untuk mengetahui permasalahan yang dihadapi oleh warga desa Tieng. Masalah yang dihadapi oleh warga Tieng adalah tingginya angka penderita stunting yaitu sebanyak 30% balita dari total anak-anak yang terdata di desa Tieng, kasus-kasus stunting tersebut disebabkan oleh beberapa hal seperti KTD (kehamilan yang tidak diinginkan), tidak rutinnya melakukan pemeriksaan kehamilan, kelahiran premature, dan lain-lain. Pelaku kegiatan pengabdian masyarakat di desa Tieng ini adalah mahasiswa Universitas Sains Al-Qur’an yang melakukan kegiatan Kuliah Pengabdian Masyarakat (KPM) berjumlah delapan orang dengan didampingi satu dosen pembimbing lapangan. Penulis melakukan intervensi permasalahan dengan terjun langsung mendampingi kegiatan imunisasi posyandu balita, pembagian makanan tambahan balita, dan kelas stunting di desa Tieng, serta memberikan intervensi tambahan berupa sosialisasi kepada masyarakat yaitu pemasangan banner pemahaman dan pencegahan stunting. Kesimpulan stunting pada balita dapat dicegah melalui implementasi kebijakan pencegahan dan pemberdayaan masyarakat.Kata Kunci: Stunting; Imunisasi; Posyandu; PKK.
Online Video Effect as a Learning Media in Improving Speaking Ability English Class X Students of Hang Tuah 4 High School Surabaya Study Year 2017/2018 Sulistiyani Sulistiyani; Nur Hidayat; Nuurus Sa’aadah
Kontribusia : Research Dissemination for Community Development Vol 1 No 2 (2018)
Publisher : OJS Universitas Muhammadiyah Gresik

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (199.383 KB) | DOI: 10.30587/kontribusia.v1i2.615

Abstract

This research is motivated by the role of language that is very important in the development of science and technology, especially English which is one of the foreign languages that are widely used in every aspect of life such as science, education, culture, business, and entertainment. The author looks at the reality of the lack of mastery of English in the educational environment, especially in the ability to speak. This study aims to describe changes in behaviour after learning English using online video learning media. The theoretical benefit of this research is for the development of science and as a provision for teachers so that it can overcome the problems that occur to students in order to improve the quality of education better. Practical benefits of this research are expected to provide input for English teachers in choosing media as an alternative to improve the quality of learning English and can provide input to teachers in the use of online learning video media for learning English (the ability to speak). The method used in this study is a research method of classroom action with two cycles carried out on the teacher discuss a UK and students of class X SMA Hang Tuah 4 Surabaya. Each cycle consists of stages of planning, action, observation and reflection. Data collection is carried out by testing and non-test. Data analysis is carried out with quantitative and qualitative techniques. Quantitative data analysis is obtained by calculating the overall student value and recapping the test scores, then calculating the average value obtained. The expected results of this study can be concluded that learning by using online video learning media can improve students' speaking ability and can change student behaviour towards positive.
STUDENTS' PERCEPTION OF USING MEDIA PLATFORMS FOR ESL STUDENTS (A case study in SMK Darma Bahari Surabaya) Siti Fatimah; Sulistiyani Sulistiyani
EL2J (English Language and Literature Journal) Vol 1 No 2 (2022): ENGLISH LANGUAGE AND LITERATURE JOURNAL
Publisher : Fakultas Bahasa & Sastra Universitas Wijaya Putra

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (581.593 KB) | DOI: 10.38156/el2j.v1i2.12

Abstract

The purpose of this study was to find out how high-school students felt about using media platforms for English learning. In this study, Students from SMK Dharma Bahari Surabaya took part. Questionnaires and semi-structured interviews were used as data collection methods in this qualitative study with a case study design. The data from the questionnaire was examined using basic statistical analysis, while the data from the interviews were analyzed using Miles and Huberman's flow model. According to the findings, students in this study use media platforms to learn and improve their English. YouTube is the most popular media platforms platform for learning English, according to them. Furthermore, they indicated that media platforms provide them with English content sources through which they may practice their English abilities, particularly listening, expand their vocabulary, and improve their pronunciation. Furthermore, because media platforms provide a wealth of English content, students can access it whenever and wherever they want. The circumstance provides a stress-free language atmosphere in which students can feel at ease and encouraged to learn English outside of the classroom.
Pola Asuh Gizi, Tingkat Konsumsi dan Kejadian Stunting Pada Anak Balita Usia 6-24 Bulan di Wilayah Kerja Puskesmas Woha Kabupaten Bima Diansa Fitri; Sulistiyani Sulistiyani; Ruli Bahyu Antika
Jurnal Kesehatan Vol 10 No 1 (2022): April
Publisher : Politeknik Negeri Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25047/jkes.v10i1.202

Abstract

Growth retardation is a chronic nutritional condition caused by long-term lack of nutrients due to inadequate nutritional needs in the diet, causing adults to have an inappropriate posture for their age. Stunting malnutrition is a form of malnutrition resulting from the calculation of height for age (height/age) below standard deviation (< -2 SD). Woha sub-district is the district with highest rate of stunting children in Bima province based on the results of nutrition status moniitoring in 2018 up to 39.65%, but decreased in 2019, specifically 33.1%. This study aimed to find out the relationship between nutritional care, consumption, stunting rates among children aged 6-2 months in the work area of ​​Puskesmas Woha, Bima Regency. This study used a cross-sectional study design. The sampling method used a simple random sampling technique, probability sampling. Data analysis using chi-squared statisticcal test. The bivariate test showed a limited relationship between energy consumption (p = 0.00 ), protein (p = 0.020), iron (p = 0.038) and zinc (p = 0.009). However, there was no relationship between the degree of calcium absorption (p = 0.38 ) and the prevalence of stunting. There was a relationship between parental nutritional levels and energy consumption (p = 0.026). However, there was no relationship between parental nutritional levels and the consumption of protein (p = 0. 32), calcium (p = 0.130), iron (p = 0.078) and zinc (p = 0.281) in children from 6 to 2 months old in this Region. Woha Community Health Center, Bima Regency. There was no relationship between maternal nutritional knowledge and stunting rate (p = 0.21 ). There is a relationship between parental nutrition and the prevalence of stunting (p = 0.007) in children 6–2 months of age at Woha Community Health Center, Bima Regency
Efforts To Improve Employee Performance Through Incentives, Work Skills, And Intrinsic Motivation, With Organizational Commitment As An Intervening Variable : Study Of CV. Mita Furniture Jepara Employees Ahmad Fahmi Fahrobi; Suparjo Suparjo; Sulistiyani Sulistiyani
Proceeding of The International Conference on Economics and Business Vol. 1 No. 1 (2022): Proceeding of The International Conference on Economics and Business
Publisher : Universitas Kristen Indonesia Toraja

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/iceb.v1i1.359

Abstract

This study aims to analyze the effect of incentives, work skills, and intrinsic motivation on employee performance either directly or indirectly through organizational commitment on CV. Mita Funiture Jepara. The population used in this study were all employees of CV Mita Furniture Jepara, and the number of samples used was 83 respondents, with the sampling technique of the saturated sample method or the census method. The data source used is primary data, with questionnaire data collection method. The analytical technique used is path analysis and Sobel test. The results of the research analysis show that incentives have a positive and significant effect on organizational commitment, work skills have a positive and significant effect on organizational commitment, intrinsic motivation has a positive and significant effect on organizational commitment, incentives have a positive and significant effect on employee performance, work skills have a positive and significant effect on organizational commitment. employee performance, intrinsic motivation has a positive and significant effect on employee performance, organizational commitment has a positive and significant effect on employee performance. Sobel test results show that organizational commitment can mediate or strengthen the effect of incentives on employee performance, organizational commitment can mediate or strengthen the effect of work skills on employee performance, and organizational commitment can mediate or strengthen the effect of intrinsic motivation on employee performance.