bluuebunny/crossref_metadata_2025_split huggingface dataset:
Prediksi Harga Tutup Saham PT. Garuda Indonesia,Tbk Menggunakan Metode ARIMA
Authors: Lusikooy Johanes , Nainggolan Nelson , Titaley Julia 
Published: July 2019

Tujuan dari penelitian ini adalah untuk menerapkan model ARIMA dalam memprediksi harga tutup saham PT. Garuda Indonesia,Tbk. 25 Oktober 2016 sampai 7 November 2016. Penelitian ini menggunakan data harga tutup saham PT. Garuda Indonesia,Tbk. Data yang digunakan yaitu data sekunder yang diambil dari website perusahaan PT. Garuda Indonesia,Tbk. sejak 1 Januari 2013 sampai 24 Oktober 2016.Dari hasil penelitian menunjukkan bahwa data 1 Januari 2013 sampai 24 oktober 2016 dapat digunakan untuk memprediksi harga tutup saham 25 oktober 2016 sampai dengan 7 November 2016. Hasilnya model ARIMA untuk harga tutup saham adalah ARIMA (3,1,3) yang dapat digunakan untuk memprediksi data 25 oktober 2016 sampai dengan 7 November 2016muaThe purpose of this research is to applying model of ARIMA to predict stock closing price of PT.Garuda Indonesia,Tbk. in 25 October 2016 until 7 November 2016. The research use data of stock closing price daily of PT. Garuda Indonesia,Tbk. Data are used is secondary data that taking from website of PT. Garuda Indonesia,Tbk. since 1 Januari 2013 until 24 October 2016. In this research show that data from 1 January 2013 until 24 October 2016 can be used to predict the stock closing price in 25 October 2016 to 7 November 2016. The result of ARIMA’s model for stock closing price is ARIMA (3,1,3) can use to predict the data on 25 October 2016 to 7 November 2016
Pemodelan Sistem Prediksi Intensitas Curah Hujan di Kota Manado Dengan Menggunakan Kontrol Logika Fuzzy
Authors: Mandey Fleydi Novisnky , Kolibu Hesky Stevy , Bobanto Maria D. 
Published: July 2019

Tujuan dari penelitian ini yaitu untuk memprediksi curah hujan yang terjadi di kota Manado apalagi di wilayah yang berada di sekitar lereng bukit yang berpotensi untuk menyebabkan terjadinya bencana alam longsor. Curah hujan yang tinggi di suatu daerah dipengaruhi oleh beberapa faktor diantaranya adalah suhu, kelembapan, tekanan udara dan kecepatan angin. Masukkan yang menjadi indikator terjadinya curah hujan dalam penelitian ini berupa faktor yang mempengaruhinya tersebut. Setelah itu dianalisa serta ditentukan membership function dan rule, kemudian dibuat simulasi prediksi intensitas curah hujan dengan kontrol logika fuzzy. Jenis logika yang akan digunakandalam penelitian ini adalah model sistem penalaran Mamdani karena metode ini bersifat intuitif, mencakup bidang yang luas, dan sesuai dengan proses input informasi manusia. Pada model mamdani, logika operasi yang digunakan adalah AND dan semua aturan akan saling bergantung dan mempengaruhi. Hasil menunjukkan bahwa semakin tinggi suhu dan tekanan udara maka akan semakin besar dampak curah hujan akan terjadi sedangkan sebaliknya semakin tinggi kelembapan dan kecepatan angin maka semakin rendah kemungkinan akan terjadinya curah hujanThe purpose of this study is to predict rainfall that occurs in the city of Manado especially in areas around the hillside that has the potential to cause natural disaster landslide. High rainfall in an area is influenced by several factors such as temperature, humidity, air pressure and wind speed. Enter the indicator of the occurrence of rainfall in this research in the form of factors that influence it. After it is analyzed and determined membership function and rule, then simulated prediction of rainfall intensity with fuzzy logic control. The type of logic to be used in this research is the Mamdani reasoning system model because this method is intuitive, covers a wide field, and is in accordance with the process of input of human information. In the mamdani model, the operational logic used is AND and all rules will be interdependent and affect. The results show that the higher temperature and air pressure will be the greater the impact of rainfall will occur whereas on the contrary the higher the humidity and wind speed the lower the possibility of rainfall.
Aktivitas Perlindungan Tabir Surya Secara In Vitro Dari Ekstrak Etanol Kulit Buah, Kulit Biji dan Biji Pinang Yaki (Areca vestiaria Giseke)
Authors: Anggriani Irmawati , Runtuwenen Max R.J. , Kamu Vanda S. 
Published: July 2019

Penelitian ini bertujuan untuk menguji aktivitas perlindungan tabir surya dari ekstrak etanol kulit buah, kulit biji dan biji pinang yaki secara in vitro. Tahap pendahuluan penelitian ini yaitu menguji nilai SPF (Sun Protection Factor) yang dilakukan secara invitro dengan menggunakan metode spektrofotometri UV-Vis. Serbuk kulit buah, kulit biji dan biji dimeserasi dengan pelarut etanol kemudian dipekatkan dengan rotary evaporator sehingga menghasilkan ekstrak pekat. Ekstrak etanol kulit buah, kulit biji dan biji pinang yaki memiliki nilai SPF yang berbeda yaitu 12,05 , 3,45 , dan 1,00. Dari nilai SPF ketiga sampel tersebut, kulit buah yang memiliki nilai SPF tertinggi dan termasuk dalam kategori Proteksi Maksimum sehingga kulit buah pinang yaki dapat dilakukan uji lanjut tentang aktivitas perlindungan tabir surya secara in vivo.The purpose of this study were to test the sunscreen protection activity of ethanol extract of the skin of Pinang Yaki fruit, shell skin and seed by using in vitro method. The preliminary stage of this research was to test the value of SPF (Sun Protection Factor) by invitro using UV-Vis spectrophotometry method. Skin of Pinang Yaki Fruit, shell skin and seed were maceration with ethanol then concentrated with a rotary evaporator to produce a concentrated extract. Skin of Pinang fruit, shell skin and seed have different SPF values of 12.05, 3.45, and 1.00. From the SPF values of the three samples, the skin of the fruit has the highest SPF value and is included in the Maximum Protection category so that the skin of Pinang Yaki fruit could be tested futher for sunscreen protection activity by in vivo method.
Panjang Dan Volume Akar Tanaman Padi Lokal Sulawesi Utara Saat Kekeringan Yang Diinduksi Dengan Polietilen Glikol 8000
Authors: Mangansige Crestie T. , Ai Nio Song , Siahaan Parluhutan 
Published: July 2019

Kekeringan berdampak buruk terhadap produktivitas dan produksi pangan di dunia. Penelitian ini bertujuan untuk mengkaji ada tidaknya perbedaan respons morfologis berdasarkan panjang dan volume akar pada tanaman padi lokal Sulawesi Utara (varietas Superwin, Ombong, Temo, dan Burungan) yang mengalami kekeringan dengan induksi PEG 8000. Tanaman padi dengan empat daun yang telah berkembang penuh pada fase vegetatif diberi perlakuan kekeringan yang diinduksi dengan PEG 8000 (potensial air/PA medium 0; -0,25; -0,5 MPa) selama 6 jam. Hasil penelitian menunjukkan bahwa faktor varietas, faktor konsentrasi PEG 8000, faktor waktu perlakuan, interaksi antara faktor varietas dan konsentrasi PEG, interaksi antar faktor varietas dan waktu perlakuan, interaksi antara faktor konsentrasi dan waktu perlakuan, interaksi antara faktor varietas, konsentrasi PEG dan waktu perlakuan tidak menyebabkan perbedaan panjang dan volume akar. Dalam penelitian ini panjang dan volume akar tidak dapat dijadikan sebagai indikator cekaman kekeringan pada keempat varietas padi lokal Sulawesi Utara.Drought decreases the productivity and production of food in the world. This study aimed to evaluate the differences of morphological responses based on root length and volume in North Sulawesi local rice (cv. Superwin, Ombong, Temo, dan Burungan) under PEG-8000-induced drought. The 4-fully-expanded-leaf plants at the vegetative phase were treated by growing the plants in the PEG 8000 solution with water potential/PA 0; -0.25; -0.5 MPa or 6 hours. The results showed that factors of variety, PEG 8000 concentration, treatment period, interaction between variety and PEG 8000 concentration, interaction between variety and treatment period, interaction between PEG 8000 concentration and treatment period, interaction among variety, PEG 8000 concentration and treatment period did not result in any differences in root length and volume. Root length and volume were not able to be used as drought indicators of in these four North Sulawesi local rice
Uji Ketahanan Bakteri Asam Laktat Hasil Fermentasi Kubis Merah ( Brassica oleracea L.) Pada pH 3
Authors: Bawole Kevin V. , Umboh Stella D. , Tallei Trina E. 
Published: July 2019

Probiotik merupakan mikroorganisme hidup yang jika dikonsumsi dalam jumlah yang tepat dapat memberikan manfaat bagi tubuh. Sebagian besar bakteri asam laktat merupakan bakteri probiotik. Untuk dapat memberikan manfaat yang maksimal bagi tubuh, salah satu kriteria yang harus dipenuhi yaitu mampu bertahan hidup pada kondisi pH yang rendah. Hal ini dikarenakan bakteri probiotik akan menghadapi kondisi pH rendah yang terdapat di lambung. Penelitian ini bertujuan untuk menguji kemampuan isolat BAL hasil fermentasi kubis merah untuk bertahan hidup pada pH 3. Bakteri asam laktat ditumbuhkan pada media MRS agar yang ditambahkan 1% CaCO3 dengan menggunakan metode sebar (spread) dan dimurnikan menggunakan metode gores (streak). Uji ketahanan asam dilakukan dengan cara isolat diinkubasi pada kondisi pH 3 dalam media NB kemudian ditumbuhkan kembali pada media NA dengan menggunakan metode spread. Uji dilakukan juga untuk mengamati aktivitas enzim katalase. Hasil penelitian menunjukkan bahwa isolat yang diperoleh dari hasil fermentasi kubis merah mampu bertahan pada pH 3.Probiotics is a livinng microorganism that if consumed in the right amount can provide benefits to the body. Most lactic acid bacteria are probiotic bacteria. To be able to provide maximum benefits for the body, one of the criteria that must be met is able to survive at low pH. This is because probiotic bacteria will face low pH conditions found in the stomach. This study aims to test the effectiveness of BAL isolates from red cabbage fermentation to survie at pH 3. Lactic acid bacteria grown on MRSA media added 1% CaCO3 by using spread method and purified by using streak method. The acid resistance test was performed by isolate incubated at pH 3 condition in NB medium by using spread method. Test were also conducted to observe the activity of catalase enzymes. The result showed that isolates obtained from red cabbage fermentation were able to survive at pH 3.
Jenis Laba-Laba (Araneae) Di Taman Wisata Alam Baumata Kecamatan Taebenu Kabupaten Kupang Nusa Tenggara Timur
Authors: Limbu Umbu N. , Ngginak James , Limbu Arnold Ch. 
Published: July 2019

Penelitian terkait laba-laba di Taman Wisata Alam Baumata (TWAB) berlangsung selama dua bulan yaitu bulan Agustus 2017. Tujuan dari penelitian ini adalah untuk mengetahui jenis laba-laba. Manfaat dari penelitian ini yaitu dapat berkontribusi bagi pihak pengelolah TWAB dalam melestarikan biodiversitas yang tersedia. Manfaat lain yaitu sebagai database keanekaragaman hayati laba-laba Nusantara khususnya di TWAB Kupang. Metode yang digunakan dalam penelitian ini berupa metode belt transek (transek sabuk) yang dikombinasikan dengan transek kuadran. Hasil penelitian dianalisis berdasarkan pada buku kunci determinasi serangga oleh Subyanto (1991) dan jurnal. Analisis keanekaragaman jenis dan kelimpahan jenis laba-laba menggunakan rumus Shannon-Wiener. Adapun spesies laba-laba yang ditemukan yakni: Gasteracantha cancriformis, Argiope appensa, Menemerus bivittatus, Latrodectus hesperus, Polcus phalangioides, Nephila inaurata, Nephila clavipes, Parasteatoda tepidorium, Hogna lenta, Scytodes thoracica, dan Heteropoda jugulans. Ke-sebelas spesies tergolong dalam famili :Araneidae, Salticidae, Theridiidae, pholcidae, Nephilidae, Lycosidae, Scytodidae dan Sparassidae. Nilai keanekaragaman laba-laba yang diperoleh 2,338 sedangkan tingkat kelimpahan spesies laba-laba adalah 0.118/m2. Berdasarkan Indeks keanekaragaman dan kelimpahan maka distribusi laba-laba di TWAB tergolong sedang.The research related to Spider at Baumata Nature Tourism Park (BNTP) lasted for one months that was August 2017. The purpose of this research is to know the type of spider. The benefit of this research is: it can contribute to the management of BNTP in preserving the available biodiversity. Another benefit is as a database of biodiversity of spider Archipelago, especially in BNTP Kupang. The used method in this research was the belt transect method (belt transect) which was combined with quadrant transect. The results were analyzed based on the key book of insect determination by Subyanto (1991) and the journal. The analysis of species variety and the profusion of the spider species used the Shannon-Wiener formula. The found spider species were: Gasteracantha cancriformis, Argiope appensa, Menemerus bivittatus, Latrodectus hesperus, Polcus phalangioides, Nephila inaurata, Nephila clavipes, Paratezati tepidorium, Hogna lenta, Scytodes thoracica, and Heteropoda jugulans. The eleven species belong to families of Araneidae, Salticidae, Theridiidae, pholcidae, Nephilidae, Lycosidae, Scytodidae and Sparassidae. The obtained spider variety value was 2,338 while the profusion extent of spider species was 0.118/m2. Based on the variety and profusion index, the spider distribution in BNTP is moderate.
Analisis Pengaruh Siklon Tropis Terhadap Curah Hujan Di Sulawesi Utara
Authors: Kawuwung Wilhelmus Luky , Tongkukut Seni H.J , - Sutikno 
Published: July 2019

Telah dilakukan penelitian untuk menganalisis pengaruh siklon tropis terhadap curah hujan di Sulawesi Utara. Pertumbuhan siklon tropis yang terjadi di Belahan Bumi Utara merupakan salah satu faktor yang mempunyai dampak cukup signifikan terhadap curah hujan di Sulawesi Utara karena letak geografisnya. Data dianalisis menggunakan metode analogi subjektif melalui interpretasi data model angin, citra satelit, tekanan udara, arah angin dan curah hujan. Hasil analisis menunjukkan siklon tropis yang terjadi di Sulawesi Utara Tahun 2017 berpengaruh terhadap intensitas curah hujan di Sulawesi Utara, sifat hujan yang terjadi dan dampak yang ditimbulkan masing - masing siklon terhadap curah hujan di Sulawesi Utara berbeda beda tergantung karakteristik siklon dan kondisi lingkungannya. Pada siklon Banyan, tahap dewasa hingga punah berpengaruh terhadap peningkatan curah hujan dengan sifat hujan dominan di atas normal. Pada siklon Talim, tahap awal tumbuh berpengaruh menurunkan curah hujan dan tahap dewasa berpengaruh meningkatkan curah hujan dengan sifat hujan dominan di atas normal. Pada siklon Kai-Tak, tahap awal tumbuh dan berakhir berpengaruh menurunkan curah hujan dan tahap dewasa meningkatkan curah hujan dengan sifat hujan dominan normalThe research to analyze the impact at the tropical cyclones on rainfall in North Sulawesi has been done. The tropical cyclones growth that occur in the Northern Hemisphere is one of the factors that has a significant effect on rainfall in North Sulawesi because of its geographical condition. The data were analyzed using subjective analogy method through interpretation of wind model, satellite imagery, air pressure, wind direction, and rainfall. The results show that the tropical cyclones in North Sulawesi in 2017 affect the rainfall in North Sulawesi. The characteristic of the rain and the impact of each cyclone on rainfall in North Sulawesi differs depending on the cyclone and its environmental conditions. For the Banyan cyclone, extinct adult cyclones affect on the increasing of the rainfall with the dominant rain above normal. In Talim cyclone, the initial rainfall grows affect on decreasing of rainfull and in adult growth, it affects to the increasing rainfall with the dominant rain characteristic above normal. In Kai-Tak cyclones, the initial rain grows and ends affect to decreasing to rainfall and large rainfall increases with normal rain.
Rancang Bangun Alat Ukur Konsentrasi Gas Sulfur Dioksida (SO2) Berbasis Mikrokontroller Dan Sensor MQ136
Authors: Kasenda Dewi I.A , Suoth Verna Albert , Mosey Handy I.R 
Published: July 2019

Telah dilakukan penelitian untuk merancang-bangun alat ukur konsentrasi gas Sulfur dioksida ( ) berbasis mikrokontroller dan menggunakan Sensor MQ136. Tujuan mengapa Sulfur dioksida sangat penting diukur karena sulfur dioksida memiliki sensitivitas individu yang berdampak pada kesehatan manusia seperti mengiritasi mata, tenggorokan, dan saluran pernapasan. Hasil penelitian menghasilkan alat pengukur sensor dengan pengujian menunjukan bahwa sensor dapat bekerja dengan baik ketika membaca konsentrasi gas pada ruang tertutup dengan nilai sebesar 0,985. Pengujian pada ruang terbuka akan menyebabkan fluktuasi pembacaan sensor karena dipengaruhi oleh beberapa faktor lingkungan seperti angin, suhu dan kelembaban. Untuk menghindari fluktuasi ini dapat dilakukan dengan cara meletakan sensor pada ruang tertutup sedemikian rupa sehingga tidak terlalu terpengaruh oleh faktor lingkungan. Dari hasil pengukuran tersebut disimpulkan bahwa prototipe alat pengukurThe research has been carried out to design-build a concentration gauge of sulfur dioxide ( ) based on a microcontroller and use MQ136 sensors. The purpose of sulfur dioxide is very important to measure because sulfur dioxide has individual sensitivity that has an impact on human health such as irritating the eyes, throat and respiratory tract. The results of the study produced a sensor measuring device with testing showing that the sensor can work well when reading the concentration of gas in a closed space with a value of of 0.985. Testing on open spaces will cause fluctuations in sensor readings because they are influenced by several environmental factors such as wind, temperature and humidity. To avoid these fluctuations, it can be done by placing sensors in closed spaces in such a way that they are not too affected by environmental factors. From the results of these measurements it was concluded that the gas concentration meter prototype had worked well when operated
Fitokimia Dan Aktivitas Antibakteri Dari Daun KAF(Chisocheton sp. (C. DC) HARMS)
Authors: Melsadalam Florentin Natalia , Katja Dewa Gede , Sangi Meiske S. 
Published: July 2019

Telah dilakukan penelitian yang bertujuan untuk mengidentifikasi senyawa metabolit sekunder dari ekstrak daun kaf menggunakan tiga jenis pelarut yakni n-heksan, etil asetat, dan metanol. Ekstrak yang diperoleh diuji aktivitas antibakterinya dengan metode difusi yang menggunakan bakteri Staphylococcusaureus dan Escherichia coli. Dari hasil pengujian fitokimia, ketiga ekstrak tersebut menunjukan bahwa sampel mengandung senyawa; alkaloid, saponin, steroid, flavonoid dan tanin. Pengujian aktivitas antibakteri dengan metode difusi menunjukan hasil yang paling tinggi aktivitas antibakteri adalah estrak etil asetat dengan zona hambat 35,75 mm terhadap bakteri Staphylococcus aureus, sedangkan pada ekstrak metanol memiliki zona hambat 23,75 mm terhadap bakteri Escherichia coliResearch has been carried out aimed at identifying secondary metabolites of kaf leaf extract using three types of solvents, namely n-hexane, ethyl acetate, and methanol.The obtained extracts were tested for antibacterial activity by diffusion method using Staphylococcus aureus and Escherichia coli bacteria. From the results of phytochemical testing, the three extracts showed that the sample contained compounds; alkaloids, saponins, steroids, flavonoids and tannins. Antibacterial activity testing with diffusion method showed the highest antibacterial activity was estracethyl ethyl acetate with 35.75 mm inhibition zone against Staphylococcus aureus bacteria, whereas methanol had 23.75 mm inhibitory zone against Escherichia coli bacteria
Efektifitas penggunaan bingkai jaring pada penjarangan benih kerang mutiara, Pinctada maxima
Authors: Tomatala Pitjont 
Published: July 2019

Abstract Pearl oyster Pinctada maxima is one of the sea resource that has an economic value in national and international market. Recently, many companies have succeeded in producing hundreds of thousand spat through hatchery. However, mortality rate of spat in rearing activityies in the sea was remain high. It was caused by unfavorable handling of spat during the spacing process. The purpose of this research was evaluate the effectiveness of using frame net in spat handling at spacing process. This research was conducted at Luv Bay of Tual City, Maluku Province on March to April 2012. The observation was conducted to measure the shell growth and survaival of P. maxima spat. The result suggested that the use of frame net in the spacing process of pearl oyster had great advantage. It was proven by the normal growth and high survival rate. Keywords : Pinctada maxima, spat, growth rate, survaival rate
Pemanfaatan Jahe (Zingiber officinale Rosc) untuk Memacu Pertumbuhan Ikan Nila (Oreochromis niloticus)
Authors: Belseran Lukas , Manoppo Henky 
Published: July 2019

A research had been conducted to study the effect ginger supplemented in feed on growth of nile tilapia. Juveniles as much as 250 individuals (mean weight 27.31 g) were obtained from Fish Culture and Development Board (BP3I) Tateli. The fish were placed in plastic bags and transported to Faculty of Fisheries and Marine Science. Fish were then introduced in 15 aquaria at a density of 15 individuals per aquarium. Each aquarium was equipped with an aerator and used water recirculation system. After adaption for one weeks, fish was fed pellet supplemented with ginger powder as treatments at five different doses including A=0, B=2,5, C=5, D=7,5, and E=10 g/kg, each with three replications. Fish was fed treatment diets for four weeks at 3%/bw/day, twice daily at 08.00 am and 17.00 pm. Growth data including absolute and relative growth were weighted at the end of feeding period. Research results showed that after four weeks of feeding, supplementation of ginger powder into fish pellet significantly improved fish growth . The growth of fish fed pellet supplemented with 7.5 g/kg of food was and significantly different as compared to that of control fish. It was concluded that supplementation of ginger powder into fish pellet potentially improved fish growth. Keywords: Ginger, absolute growth, relative growth, nile tilapia
Penambahan Madu Dalam Pengenceran Sperma untuk Meningkatkan Motilitas, Fertilisasi dan Daya Tetas Telur Ikan Mas (Cyprinus carpio L)
Authors: Tumanung Sudirman , Sinjal Hengky J , Watung Juliaan Ch 
Published: July 2019

The research intended to determine the optimal concentration of honey addition in sperm dilution to improve sperm motility, fertilization and eggs hatchability of goldfish (Cyprinus carpio). Experimental design used was a Complete Randomized Design (CRD) with four treatments each with three replications. The concentration of honey addition used for treatment were A (0 ml of honey in 100 mL of physiological NaCl), B (0,2 mL of honey in 99.8 mL of physiological NaCl), C (0.4 mL of honey in 99.6 ml of physiological NaCl), D (0.6 mL of honey in 99.4 mL of physiological NaCl). Sperm dilution containers used was 12 plastic cups and the container fertilization and hatching eggs container used was 12 brass plates. Spermatozoa motility observation performed immediately after dilution process. Fertilization observation was performed after 12 hours of fertilization process, and Egg Hatchability observation was performed after 72 hours of fertilization. The observation results showed that the addition of honey in sperm dilution contributed significant effect on spermatozoa motility, fertilization and eggs hatchability of goldfish (Cyprinus carpio). This observation showed that the addition of 0.6 ml of honey in a sperm dilution was the best treatment indicated by the average percentage of spermatozoa motility (80,00%), fertilization (84,00%) and eggs hatchability (82,33%). Keywords: Honey, spermatozoa motility, fertilization, eggs hatchability, Cyprinus carpio L