Jurnal Penelitian Saintek最新文献

{"title":"ANALISIS POTENSI ENERGI TERBARUKAN PEMBANGKIT LISTRIK TENAGA MIKROHIDRO DI MANOKWARI SELATAN","authors":"E. Bawan, Antonius D. Palintin, Eric A. Patandianan","doi":"10.21831/JPS.V26I1.37311","DOIUrl":"https://doi.org/10.21831/JPS.V26I1.37311","url":null,"abstract":"Tujuan dari penelitian ini adalah menganalisis potensi energi listrik di kabupaten Manokwari Selatan. Penelitian dilaksanakan pada bulan Juli 2019 di Kabupaten Manokwari Selatan pada tiga Distrik. Survei geologi dilakukan dengan pendekatan geologi regional Lembar Ransiki. Untuk analisis hidrologi dan kemiringan lereng dilakukan dengan menggunakan citra satelit, Digital Elevation Model (DEM) dan Peta Rupa Bumi Indonesia (RBI) dan aplikasi Sistem Informasi Geografis (SIG) serta pengukuran di lapangan untuk penentuan debit lapangan. Kondisi hidrologi yang menjadi kajian meliputi potensi debit dan curah hujan. Perhitungan debit air pada DAS menggunakan metode FJ. Mock. Data evapotranspirasi potensial dihitung dengan menggunakan metode Pennman Modifikasi. Penelitian ini menunjukkan bahwa debit andalan pada sungai Susmorof mencapai 1500 L/dt masing-masing untuk kepentingan pengembangan sistem. Total potensi PLTMH di dua lokasi yang dikaji adalah sebesar 30,4 kW di sungai Bengko kampung Sihu dan 73,4 kW. Untuk pengembangan PLTMH di Kampung Susmorof hal ini penting untuk ditindaklanjuti pada tahapan studi kelayakan dan penyusunan perencanaan detail desain.THE ANALYSIS OF RENEWABLE ENERGY POTENTIAL OF MICROHYDRO POWER PLANT IN SOUTH MANOKWARIThe purpose of this study was to analyze the potency of electrical energy in South Manokwari district. The research was conducted in July 2019 in South Manokwari Regency in three districts. The geological survey was carried out using the Ransiki Sheet regional geological approach. For hydrological and slope analysis, satellite imagery, Digital Elevation Model (DEM) and Indonesian Earth Map (RBI) and Geographic Information System (GIS) applications as well as measurements in the field were used to determine field discharge. The hydrological conditions under study include the potential for discharge and rainfall. Calculation of water discharge in the watershed uses the FJ Mock method. Potential evapotranspiration data were calculated using the Modified Pennman method. This study shows that the mainstay discharge in the Susmorof river reaches 1500 L/s each for the purpose of system development. The total potential for MHP in the two locations studied are 30.4 kW in the Bengko river, Sihu village and 73.4 kW. For the development of MHP in Susmorof Village, this is important to be followed up at the stage of feasibility studies and preparation of detailed design planning.   ","PeriodicalId":370796,"journal":{"name":"Jurnal Penelitian Saintek","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115171711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PERBANDINGAN AKTIVITAS SITOTOKSIK EKSTRAK DAN MINYAK ATSIRI RIMPANG Curcuma mangga Val. TERHADAP SEL MCF-7","authors":"P. Purwanto, Putri Khaerani Cahyaningrum, R. S. Sudibyo","doi":"10.21831/JPS.V26I1.39977","DOIUrl":"https://doi.org/10.21831/JPS.V26I1.39977","url":null,"abstract":"Rimpang Curcuma mangga Val. banyak digunakan sebagai obat herbal antikanker payudara. Penelitian aktivitas sitotoksik terhadap sel kanker payudara banyak dilakukan utamanya untuk minyak atsiri rimpang, dan hanya sedikit penelitian terhadap ekstraknya. Walaupun demikian belum ada yang membandingkan aktivitas sitotoksik dari ekstrak dan minyak atsiri tersebut terhadap sel kanker payudara; meskipun kandungan senyawa keduanya berbeda. Oleh karena itu penelitian ini bertujuan membandingkan aktivitas sitotoksik dari ekstrak dan minyak atsiri rimpang C. mangga Val. secara in vitro terhadap sel kanker payudara MCF7. Ekstrak rimpang dibuat secara maserasi menggunakan pelarut n-heksana; sedangkan minyak atsiri dibuat melalui destilasi uap irisan rimpang selama 5 jam. Uji aktivitas sitotoksik in vitro dilakukan menggunakan metoda MTT Assay. Rendemen minyak dari ekstrak n-heksana rimpang C. mangga Val. adalah 1,15 x 10-2 % sedangkan rendemen minyak atsiri adalah 6,3 x 10-2 %. Hasil uji sitotoksik menghasilkan IC50 ekstrak 106,414 µg/ml (R2=0,9677) dan minyak atsiri 198,557 µg/ml (R2=0,8037). Hal ini menunjukkan bahwa ekstrak rimpang C. mangga Val. lebih sitotoksik terhadap sel kanker payudara MCF-7 daripada minyak atsirinya, karena kandungan ekstrak mayoritas diterpenoid (53,18%) sedangkan minyak atsiri mayoritas monoterpenoid (51,34%).THE COMPARISON BETWEEN THE ACTIVITIES OF CYTOTOXIC EXTRACTS AND ESSENTIAL OILS OF RHIZOME Curcuma mango Val. TOWARD MCF-7 CELLSCurcuma mangga Val. rhizome has been used as herbal anti breast cancer. Researches on cytotoxic activity towards breast cancer cells have been done especially to the rhizome’s essential oil; and only few researches done to the extract. However there is no cytotoxic activity comparation of the extract and essential oil towards breast cancer cells; even tough their substance contents are different. Therefore, this study aimed to compare the cytotoxic activity in vitro of the extract and essential oil of C. mangga Val. rhizomes towards breast cancer cells of MCF-7. The rhizome extract was prepared by maceration using N-hexane; while the essential oil was prepared by steam distillation for 5 hours of the sliced rhizomes. The in vitro cytotoxic test was carried out using MTT Assay. The yield of oil from rhizome extract was 1.15 x 10-2 %; while the yield of essential oil was 6.3 x 10-2 %. The IC50 of extract oil was 106.414 µg/ml (R2=0.9677) and the IC50 of essential oil was 198.557 µg/ml (R2=0.8037). It shows that rhizome extract of C. mangga Val. was more cytotoxic towards MCF-7 than the oil because the majority content of extract were diterpenoids (53.18%) while the oil were monoterpenoids (51.34%).","PeriodicalId":370796,"journal":{"name":"Jurnal Penelitian Saintek","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133364212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"KAJIAN POTENSI ANTIOKSIDAN ALAMI BERBAGAI LIMBAH TANAMAN","authors":"Rukiah Lubis, N. Hidayah, Nopriyeni Nopriyeni","doi":"10.21831/JPS.V26I1.39527","DOIUrl":"https://doi.org/10.21831/JPS.V26I1.39527","url":null,"abstract":"Tujuan dari penelitian ini adalah untuk menganalisis kandungan antioksidan (antosianin, vitamin A, C, dan E) dari limbah kulit buah senduduk (Melastoma malabathricum L.), jantung pisang, jengkol. Penelitian dilaksanakan selama enam bulan. Analisa antosianin dan vitamin A, C, dan E dilakukan di Balai Besar Industri Agro, Bogor. Bahan yang digunakan pada penelitian ini terdiri dari kulit buah senduduk, jantung pisang, dan jengkol. Analisis kandungan vitamin A dilakukan pada sampel mengunakan alat High Performance Liquid Cromatography (HPLC). Penentuan  kadar  antosianin  dihitung menggunakan metode perbedaan pH. Data yang diperoleh dianalisis secara deskriptif. Hasil penelitian menunjukkan bahwa aktivitas antioksidan alami yang paling tinggi menurut analisis kandungan vitamin A, C, E dan antosianin dari ketiga limbah tanaman (buah senduduk, jantung pisang, kulit jengkol), terdapat pada kulit buah senduduk dan kulit jantung pisang yaitu kandungan vitamin C (111.33 mg/kg dan 263.33 mg/kg) dan kandungan antosianin (684.008 mg/100g dan 174.289 mg/100g). Dapat disimpulkan bahwa buah senduduk dan jantung pisang bisa dijadikan sebagai antioksidan alami yang baik berdasarkan hasil analisis kandungan vitamin A, C, E, dan kandungan antosianin.THE STUDY OF POTENTIAL NATURAL ANTIOXIDANTS FROM PLANT WASTEThis study was aimed at analyzing the content of antioxidants (anthocyanins, vitamins A, C, and E) from the rind of sanduduk’s fruit (Melastoma malabathricum L.), Blossom of the banana plant (Musa acuminata Colla), jengkol (Archidendron pauciflorum) fruit. The research was conducted for six months. Analysis of anthocyanins and vitamins A, C, and E was performed at Balai Besar Industri Agro, Bogor. The materials used in this research consisted of sanduduk rind, banana blossom, and jengkol fruit. Vitamin A content analysis was performed on the samples using High Performance Liquid Chromatography (HPLC). The determination of anthocyanin levels was calculated using the pH difference method. The data obtained were analyzed descriptively. The results showed that the highest natural antioxidant activity according to the analysis of vitamin A, C, E and anthocyanin content from the three wastes, found in sanduduk rind and banana blossom which contain vitamin C ( 111.33 mg/kg and 263.33 mg/kg) and anthocyanin (684.008 mg/100g and 174.289 mg/100g). It can be concluded that sanduduk fruit and banana blossom can be used as a good natural antioxidant based on the results of analysis of vitamin A, C, E, and anthocyanin content.","PeriodicalId":370796,"journal":{"name":"Jurnal Penelitian Saintek","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128932230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"KEANEKARAGAMAN ORGANISME PADA RHIZOSFER GULMA SIAM DI LAHAN VULKANIK, PESISIR, DAN KARST","authors":"T. Aminatun, Siti Umniyatie, A. Rakhmawati, Aji Suhandy, Nr. Widyaningrum, Kurnia Cahyani","doi":"10.21831/JPS.V26I1.38754","DOIUrl":"https://doi.org/10.21831/JPS.V26I1.38754","url":null,"abstract":"Penelitian ini bertujuan untuk membandingkan kondisi edafik, hubungan antara kondisi edafik dan keanekaragaman organisme tanah, serta perbedaan keanekaragaman organisme tanah pada berbagai ekosistem rhizosfer gulma Siam (Chromolaena odorata) yang tumbuh di lahan vulkanik, pesisir, dan karst. Penelitian dilakukan dengan mengambil sampel tanah dari ekosistem rhizosfer gulma Siam di lahan vulkanik, karst, dan pesisir Daerah Istimewa Yogyakarta; mengamati komposisi organisme tanah di laboratorium, yaitu collembola, nematoda, dan mikoriza. Hasil penelitian menunjukkan bahwa tanah pada rhizosfer gulma Siam yang tumbuh di lahan karst menunjukkan tingkat kesuburan tertinggi yang ditunjukkan oleh kandungan N, K, dan C-organik tanah, sedangkan tanah pesisir memiliki kandungan P tertinggi. Tekstur tanah pada rhizosfer gulma Siam lebih berpengaruh terhadap keanekaragaman organisme tanah dibandingkan kandungan hara tanah dan sifat tanah lainnya yang diteliti. Keragaman organisme tanah rhizosfer gulma Siam lebih besar di lahan pesisir dibandingkan di lahan karst dan vulkanik. Implikasi dari hasil tersebut adalah bahwa tanah dengan tekstur berpasir akan lebih bermanfaat bagi pertumbuhan gulma Siam dengan keanekaragaman organisme rhizosfer yang lebih tinggi.ORGANISM DIVERSITY IN THE RHIZOSPHERE OF SIAM WEEDS IN VOLCANIC, COASTAL AND KARST LANDThe research aims to compare the edaphic condition, the relationship between the edaphic condition and soil organism diversity, and the differences of soil organism diversity in different rhizosphere ecosystems of Siam weed growing in volcanic, coastal and karts areas. The research was conducted by taking soil samples from the Siam weed rhizosphere ecosystems in volcanic, karst and coastal areas of the Special Region of Yogyakarta and observing the composition of the soil organisms in the laboratory, including collembola, nematode, and mycorrhiza. The results find that soil from rhizosphere of Siam weed growing in karst area shows the highest level of fertility indicated by the N, K, and C-organic contents of the soil, whereas soil from coastal area has the highest P content. Soil texture in the rhizosphere of Siam weed has more effect on the diversity of soil organisms than the soil nutrient content and other soil properties investigated. The diversity of soil organisms of Siam weed rhizosphere is greater in coastal area than those in karst and volcanic areas. The implication of the results is that soil with a sandy texture will be more beneficial for the growth of Siam weed with a higher diversity of rhizosphere organisms","PeriodicalId":370796,"journal":{"name":"Jurnal Penelitian Saintek","volume":"164 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121798881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"EXPLORING THE POTENTIAL ENERGY OF LODAGUNG MINI-HYDROPOWER PLANT IN BLITAR, WEST JAVA, INDONESIA","authors":"E. Susilowati, R. V. Ruritan","doi":"10.21831/JPS.V26I1.35248","DOIUrl":"https://doi.org/10.21831/JPS.V26I1.35248","url":null,"abstract":"Renewable energy in Indonesia is not optimally developed. Most existing renewable energy power plants come from water and geothermal, but the utilized capacity is far away from significant. Lodagung mini-hydro power plant was built by The Public Corporation, Jasa Tirta I  with an installed capacity of 2x650 kW utilizing water from the Lodagung Irrigation Channel, Wlingi Dam to generate electricity in Blitar Regency, East Java. The plant has become the first to use Siphon technology in its operation. This study aims to analyse the potential power generated by Lodagung Mini-hydropower plant using primary and secondary data. The data processing was done by calculating the reliable discharge of the irrigation channel for three years since 2011 to 2013; calculating the water discharge in the siphon pipe; and calculating the estimated power generated by the plant. The findings indicate that the maximum discharge of the Lodagung irrigation channel is 13.78 m3/second, and the minimum discharge is 8.89 m3/second. The design discharge is 13.78 m3/second, and the maximum discharge in the siphon pipe is 3.96 m3/second/pipe. Based on the need, the expected power generated ranges from 16.48 kWh/day to 28.66 kWh/day.","PeriodicalId":370796,"journal":{"name":"Jurnal Penelitian Saintek","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123294315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PENGARUH VARIASI TANAMAN BARIER SEBAGAI NATURAL PEST CONTROL TERHADAP POPULASI HAMA DAN PRODUKTIVITAS PADI","authors":"T. Aminatun, Budiwati Budiwati, Lili Sugiyarto, Amin Khusnadiyah, A. S. Hidayah, Ema Imtihana","doi":"10.21831/JPS.V25I1.29999","DOIUrl":"https://doi.org/10.21831/JPS.V25I1.29999","url":null,"abstract":"Tujuan dari penelitian ini adalah untuk menganalisis pengaruh variasi jenis tanaman barier terhadap dinamika populasi serangga hama pada tanaman padi dan produktivitas tanaman padi. Penelitian ini dilakukan di Kebun Percobaan Fakultas Pertanian UGM Banguntapan Bantul. Variabel bebas dari penelitian ini adalah perlakuan variasi tanaman barier yaitu kontrol (tanpa barier), gulma alami, bunga matahari, dan bunga kenikir. Variabel terikatnya adalah dinamika populasi serangga hama dan produktivitas tanaman padi. Pengamatan serangga hama dan musuh alaminya dilakukan terbatas pada pagi hari antara pukul 08.00-11.00 dengan metode scan sampling yang dilakukan pada 3 minggu sekali. Data produktivitas tanaman padi yang diambil meliputi berat kering gabah hasil panen per plot perlakuan. Untuk melihat pengaruh perlakuan variasi jenis tanaman barier terhadap populasi serangga hama tanaman padi dan produktivitas tanaman padi dilakukan uji ANOVA. Hasil penelitian menunjukkan tidak terdapat perbedaan yang signifikan dari pengaruh variasi jenis tanaman barier terhadap perbedaan dinamika populasi serangga hama maupun terhadap produktivitas tanaman padi, tetapi perlu diadakan penelitian lanjutan yang dikaitkan dengan variabel lain yang mempengaruhi produktivitas tanaman padi.THE EFFECT OF BARRIER PLANT VARIATION AS NATURAL PEST CONTROL ON PEST POPULATION AND RICE PRODUCTIONThis study was aimed at analyzing the effect of the barrier plant variation to the population dynamic of rice pest insect and on rice crop productivity. The study was conducted in the experimental Garden of Faculty of Agriculture of Gadjah Mada University in Banguntapan Bantul. The independent variable was the treatment of barrier plant variation, i.e. control (without barrier), natural weed, sunflower and kenikir flower plants, while the dependent variables were population dynamic of pest insect and rice crop productivity. Pest insects and their natural enemies observation was carried out in between 08.00-11.00 am by scan sampling every 3 weeks. The retrieval of crop productivity data was done when the harvest per treatment plot. The data obtained was then tested with ANOVA, to find out the effect of the treatments on population dynamic of rice crop pest, as well as rice crop productivity. The results show that there was no significant difference in the effect of barrier plant variation to the differences in population dynamic of pest insects; as well as in the productivity of rice crop, but it is necessary to conduct advanced research that is associated with other variables that affect rice crop productivity.","PeriodicalId":370796,"journal":{"name":"Jurnal Penelitian Saintek","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127470095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"EXPERIMENTAL STUDY ON THE PHENOMENA ON THE SUCCESSIVE DROPLETS IMPACTING HOT COPPER SURFAC","authors":"A. Widyatama, A. I. Majid, T. Wibowo, D. Deendarlianto, S. Kamal","doi":"10.21831/JPS.V24I2.26923","DOIUrl":"https://doi.org/10.21831/JPS.V24I2.26923","url":null,"abstract":"This study was aimed at investigating the phenomena and interactions between water droplets and hot metal surfaces using an experimental method. In this study, the droplet was dropped from 50 mm from the top of the metal surface with a frequency of 8.5 droplets per second. The observed droplet diameter was 3.12 mm. The metal used was copper with a surface temperature between 110-240 ° C. High speed video camera with a speed of 2000 fps was used to record visual data. Then the image processing technique was applied to calculate the change in droplet diameter. The results show that at low temperatures, droplets tend to maintain their initial position of contact with fluctuating deformations. While at high temperatures, a bounce phenomenon occurs which results in collisions between droplets being imperfect. Visualization results can reveal the complete change in the droplet geometry in the form of spreading ratio and complete apex height. The temperature of 140° C is the initial transition area for phenomena that result in droplets has no contact with hot surfaces so that the process of heat transfer between surfaces is inhibited.STUDI EKSPERIMEN PADA FENOMENA SUCCESSIVE DROPLETS MENUMBUK PERMUKAAN TEMBAGA PANASPenelitian ini bertujuan untuk mempelajari fenomena dan interaksi antara tetesan air (droplet) dan permukaan logam panas dengan metode eksperimental. Pada penelitian ini, droplet dijatuhkan dari posisi 50 mm dari atas permukaan logam dengan frekuensi 8,5 droplet per detik. Diameter droplet yang diamati sebesar 3,12 mm. Logam yang digunakan adalah tembaga dengan temperatur permukaan di antara 110-240° C. High speed video camera dengan kecepatan 2000 fps digunakan untuk merekam data visual. Teknik image processing diaplikasikan untuk menghitung perubahan diameter droplet. Hasil penelitian menunjukkan bahwa pertama, pada temperatur rendah, droplet cenderung mempertahankan posisi awal kontak dengan perubahan bentuk yang fluktuatif. Kedua, temperatur tinggi, terjadi fenomena bouncing yang mengakibatkan tumbukan antar droplet menjadi tidak sempurna. Hasil visualisasi dapat mengungkap perubahan geometri droplet berupa spreading ratio dan apex height secara lengkap. Dari penelitian ini juga diketahui bahwa temperatur 140°C menjadi daerah transisi awal terjadinya fenomena yang mengakibatkan droplet tidak bersinggungan dengan permukaan panas sehingga proses perpindahan kalor antar permukaan terhambat.","PeriodicalId":370796,"journal":{"name":"Jurnal Penelitian Saintek","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134006278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"THE RELATIONSHIP AMONG PEDICULOSIS CAPITIS, ANEMIA AND LEARNING ACHIEVEMENT IN ELEMENTARY STUDENTS","authors":"Nunung Sulistyani, Nur Khikmah","doi":"10.21831/jps.v24i2.26500","DOIUrl":"https://doi.org/10.21831/jps.v24i2.26500","url":null,"abstract":"This study was aimed at determining the relationship between the Pediculus humanus capitis infestation condition, anemia status and learning achievement in primary school-age children. This study was conducted at SD Bangunharjo Sewon Bantul, Yogyakarta. This study is an observational analytic study with cross sectional design in which the variables are measured in one measurement without intervening. The data obtained through pediculosis examination, Hb examination, and measurement of learning outcomes. The data then were analyzed descriptively presented in tabular form, then performed statistical analysis using the chi-square test. The results show that the students suffering from pediculosis, 57.9% also suffering from anemia and 51.0% having poor category achievement. In line with other researchers, one of the factors that influence one’s learning achievement is the memory factor. Someone’s anemia status can affect one’s memory. The prevalence of Pediculus humanus capitis infestation is 38.3%. Chi-square test showed a significant relationship between Pediculus humanus capitis infestation condition, anemia status, and learning achievement.HUBUNGAN PEDIKULOSIS KAPITIS, STATUS ANEMIA DAN PRESTASI BELAJAR PADA SISWA SEKOLAH DASAR Penelitian ini bertujuan untuk mengetahui hubungan kejadian infestasi Pediculus humanus capitis (kutu kepala) dengan status anemia dan prestasi belajar pada anak usia sekolah dasar. Penelitian ini dilakukan di SD wilayah Bangunharjo Sewon Bantul Yogyakarta. Penelitian ini merupakan penelitian analitik observasional dengan desain cross sectional. Variabel diukur dalam satu kali pengukuran dengan tidak melakukan intervensi. Data penelitian diperoleh melalui pemeriksaan pedikulosis, pemeriksaan Hb, dan pengukuran hasil belajar. Data dianalisa secara deskriptif yang disajikan dalam bentuk tabel, kemudian dilakukan analisis statistik menggunakan Uji chi-square. Hasil penelitian ini menunjukan bahwa menderita pedikulosis sebesar 57,9% menderita anemia dan sebesar 51,0% dengan prestasi belajar kategori kurang baik. Salah satu faktor yang mempengaruhi prestasi belajar seseorang yaitu faktor daya ingat. Status anemia seseorang dapat mempengaruhi daya ingat seseorang. Prevalensi infestasi Pediculus humanus capitis sebesar 38,3%. Uji chi-square menunjukkan adanya hubungan yang signifikan antara kejadian infestasi Pediculus humanus capitis dengan status anemia dan prestasi belajar.","PeriodicalId":370796,"journal":{"name":"Jurnal Penelitian Saintek","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115487160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"EFFECT OF INOCULANT AND RAMIE COMPOST ON EFFICIENCY DEGRADATION HIDROCARBON, POPULATION TOTAL FUNGI AND RAMIE","authors":"Yuhanidz Yuhanidz, Pudjawati Suryatmana, B. Fitriatin","doi":"10.21831/JPS.V24I2.20128","DOIUrl":"https://doi.org/10.21831/JPS.V24I2.20128","url":null,"abstract":"This study was aimed at determining the effect of ramie, ramie compost and types of inoculants on the efficiency of hydrocarbon degradation, total fungi population, and ramie height. The study was conducted using factorial RAK with 2 factors. The calculation of the total population of Aspergillus niger was done using the total plate count (TPC) method, while the measurement of total petroleum hydrocarbons (TPH) levels used the gravimetric method. The experiment was conducted at the Greenhouse of the Faculty of Agriculture, Padjadjaran University, Jatinangor, West Java with an altitude of 822 meters above sea level. Soil analysis was carried out at the Soil Fertility and Plant Nutrition Laboratory and the Soil Biology Laboratory, Faculty of Agriculture, Padjadjaran University. The experiment was conducted from November 2017 to February 2018. The results of the study do not show an interaction between inoculants and ramie compost on the efficiency of degradation, total fungi population and ramie height in the phytoremediation process of petroleum waste. The results also showed that there was no best type of inoculant and ramie compost dose for degradation efficiency, total fungi population and ramie height in phytoremediation of petroleum waste.PENGARUH INOKULAN DAN KOMPOS RAMI TERHADAP EFISIENSI DEGRADASI HIDROKARBON, POPULASI TOTAL FUNGI DAN TINGGI RAMI Penelitian ini bertujuan untuk mengetahui pengaruh rami, kompos rami, dan jenis inokulan terhadap efisiensi degradasi hidrokarbon, populasi total fungi dan tinggi tanaman rami. Penelitian dilakukan dengan menggunakan RAK faktorial dengan 2 Faktor. Perhitungan populasi total Aspergillus niger dilakukan dengan menggunakan metode total plate count (TPC), sedangkan pengukuran kadar total petroleum hydrocarbons (TPH) menggunakan metode gravimetri. Percobaan dilaksanakan di Rumah Kaca Fakultas Pertanian Universitas Padjadjaran Jatinangor, Kabupaten Sumedang, Provinsi Jawa Barat dengan ketinggian 822 mdpl. Analisis tanah dilakukan di Laboratorium Kesuburan Tanah dan Nutrisi Tanaman dan Laboratorium Biologi Tanah Fakultas Pertanian Universitas Padjadjaran. Percobaan dilaksanakan dari bulan November 2017 sampai dengan bulan Februari 2018. Hasil penelitian tidak menunjukkan adanya interaksi antara inokulan dan kompos rami terhadap efisiensi degradasi, populasi total fungi dan tinggi tanaman rami pada proses fitoremediasi limbah minyak bumi, serta tidak diperoleh jenis inokulan dan dosis kompos rami terbaik terhadap efisiensi degradasi, populasi total fungi, dan tinggi tanaman rami pada fitoremediasi limbah minyak bumi.","PeriodicalId":370796,"journal":{"name":"Jurnal Penelitian Saintek","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127791306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"THE EFFECT OF OPENING TYPE ON THERMAL CONVENIENCE OF THE OLD AND NEW BUILDING CLASSROOM","authors":"Ali Anton Senoaji, A. Kusumawanto, S. Utami","doi":"10.21831/JPS.V24I2.25788","DOIUrl":"https://doi.org/10.21831/JPS.V24I2.25788","url":null,"abstract":"This study was aimed at analyzing the effect of opening type on the thermal convenience of classrooms in old and new buildings at SMK Negeri 3 Yogyakarta. This study used a qualitative comparative method and the simulation of IES VE 2018. The field air measurement is carried out at 10 measurement points and 5 measurement points in each class, with a height of 1.5 m. Field measurements were carried out in March 2019, at 06.30-16.30 WIB. The parameters used in the study were air temperature, humidity and wind speed. Air temperature and humidity were measured using a Thermo hygrometer. Wind speed was measured using an anemometer. The data collection method is carried out by observation and measurement. Root Mean Squared Error (RMSE) was used to validate the data. The results show the best thermal convenience of the classroom was obtained during the simulation using the type of Windows Awning, with a full aperture area. Simulation results show a comfortable distribution of airflow in the classroom at wind speeds above 0.15-0.28 m/sec, Temperature 25.07-27.10oC.PENGARUH TIPE BUKAAN TERHADAP KENYAMANAN TERMAL RUANG KELAS BANGUNAN LAMA DAN BARU Tujuan dari penelitian yaitu menganalisis pengaruh bukaan terhadap kenyamanan termal ruang kelas pada bangunan lama dan baru, di SMK Negeri 3 Yogyakarta. Penelitian ini menggunakan metode komparatif kualitatif yaitu dan hasil simulasi IES VE 2018. Pengukuran udara luar dilakukan pada 10 titik pengukuran dan sebanyak 5 titik pengukuran disetiap kelasnya, dengan ketinggian 1,5 m. Pengukuran lapangan dilakukan pada bulan Maret tahun 2019, waktu 06.30-16.30 WIB. Parameter yang digunakan dalam penelitian yaitu temperatur udara, kelembaban dan kecepatan angin. Temperatur udara dan kelembaban diukur dengan menggunakan alat thermo hygrometer. Kecepatan angin diukur dengan menggunakan alat anemometer. Metode pengumpulan data dilakukan dengan metode pengamatan dan pengukuran. Validasi data menggunakan Root Mean Squared Error (RMSE). Hasil penelitian menunjukkan kenyamanan termal ruang kelas terbaik diperoleh pada saat simulasi menggunakan tipe bukaan ke atas atau Awning Windows, dengan area bukaan penuh. Hasil simulasi menunjukkan distribusi aliran udara yang nyaman di dalam ruang kelas pada kecepatan angin di atas 0,15-0,28 m/det, Temperatur 25,07 -27,10o C. ","PeriodicalId":370796,"journal":{"name":"Jurnal Penelitian Saintek","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129450990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}