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INDONESIA
Program Kreativitas Mahasiswa - Penelitian
Published by DITJEN DIKTI KEMDIKBUD RI
ISSN : -     EISSN : -     DOI : -
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Articles 105 Documents
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MIKROBA ENDOFIT “SI PEMBUNUH” Escherichia coli Walpajri, Febri; Rohyani, Rohyani; Umayah, Sari
Program Kreativitas Mahasiswa - Penelitian PKM-P 2014
Publisher : Ditlitabmas, Ditjen DIKTI, Kemdikbud RI

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Abstract

Endophytic microbes are microscopic microorganisms (bacteria and fungi) that live in the tissues of plants, leaves, roots, fruits and stems. The parasite plants (Helixanthera sp.) on sapodilla (Manilkara zapota), cocoa (Theobroma cacao) and coffee (Coffea arabica) are medicinal plants. These plants have endophytic microbes that have antibacterial compounds as antibiotics. The purpose of this study was to get endophytic microbial isolates from parasite plants (Helixanthera sp.) on sapodilla, cocoa and coffee, and determine the antibacterial activity against Escherichia coli. Sampling was conducted in Kampar regency and Pekanbaru city. The parasite plants were collected from the field and their endophytic microbes were isolated using surface sterilization method and purified before being tested the activity against E. coli. The selected microbes were then characterized. The results obtained 30 endophytic bacterial isolates and 10 endophytic fungi that had activity against E. coli. Endophytic bacteria isolate which had the highest activity against E. coli  was Bbs4 isolate from sapodilla parasites with 12,1 mm  inhibition zone diameter and endophytic fungi isolate which had the highest activity against E. coli was Jbc2 isolate (genus Penicillium)  from cocoa parasites with 12,1 mm inhibition zone diameter. Keywords:  antibacterial, endophytic microbes, Escherichia coli, parasite plant
STUDI EKSPERIMENTAL NANOREFRIGERAN TiO2-R600a SEBAGAI REFRIGERAN MASA DEPAN Rozaq, Abdur; Siddiq, Nur Abdillah; Putra, Rendy Krisnanta; Yusuf Z, Muhammad Dicky; Muyasaroh, Siti
Program Kreativitas Mahasiswa - Penelitian PKM-P 2014
Publisher : Ditlitabmas, Ditjen DIKTI, Kemdikbud RI

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Abstract

The use of CFC refrigerants (Chloro Fluoro Carbon) leads to destruction of ozone layer and global warming. An alternative refrigerant is hydrocarbon refrigerant, but it has the disadvantage of easily exploded. This experimental study has been conducted to study the effect of addition of TiO2, which are flame retardant, on the performance of hydrocarbon refrigerant R600a (nanorefrigeran TiO2-R600a). Test of Performance conducted according to refrigerants national standards IEC 60335-2-24-2010. The result is R600a-TiO2 is safe and efficient to be used as a refrigerant without any modification on refrigerator. TiO2 increases the thermal conductivity and heat transfer of refrigerant. The best performance is obtained at TiO2 concentration of 1 g / L (COP = 4,821). It is expected that the nanorefrigeran TiO2-R600a can be used as the primary refrigerant in the future that are environmentally friendly and efficient. Keywords:  Nano-Refrigerant, R600A, TiO2, COP
KULIT COWEBA (Inocarpus fagifer Fosberg) SEBAGAI ANTIDIABETES ALAMI ASAL PAPUA Maelissa, Yanty Mega Puspita; Praptiwi, Nitya dewi; Ofias, Jefri Laban; Darwis, Darwis
Program Kreativitas Mahasiswa - Penelitian PKM-P 2014
Publisher : Ditlitabmas, Ditjen DIKTI, Kemdikbud RI

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Abstract

Coweba (Inocarpus fagifer Fosberg) has traditionally been used to treat diabetes in ethnic Isirawa, Sarmi, Papua. The purpose of this study was to extract and determine the antidiabetic active compound content of polar and non-polar extracts of skin Coweba (Inocarpus fagifer Fosberg) as the basis for the development of natural antidiabetic drugs based on local resources. The method used in this study, namely, maceration with methanol solvent, fractionation, screening phytochemical, antidiabetic activity test ɑ-glucosidase inhibition. Identification of chemical constituents in the extract contains compounds include classes of secondary metabolites: alkaloids, flavonoids, triterpenoids or steroids, saponins and tannins. The results showed that the methanol extract of red that was obtained with yield of 6.11% and a strong positive contains flavonoids and alkaloids. The results of the analysis of the methanol extract using FTIR, indicating the presence of an absorption band -OH, C = O, and C = C aromatic, characteristic for the uptake of flavonoid compounds. Test of α-glucosidase inhibitory activity, indicating that the methanol extract of the bark has coweba has the capability of the enzyme alpha glucosidase  inhibition  that  is equal  to 75.86% with IC50 value of 0.814 ppm. This indicates that the plants Coweba very potential to be developed as a raw material of natural herbal antidiabetic drugs.Keywords:  Coweba, antidiabetic, α-glucosidase, phytochemical
DISTRIBUSI BURUNG KAMPUS ITB JATINANGOR SEBAGAI KAWASAN PENYANGGA HUTAN LINDUNG GUNUNG MANGLAYANG Permadi, Dikdik; Rasyidi, Rahman; Primadieta, Primadieta
Program Kreativitas Mahasiswa - Penelitian PKM-P 2014
Publisher : Ditlitabmas, Ditjen DIKTI, Kemdikbud RI

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Abstract

In addition educational activities purposes, Jatinangor is used as a buffer zone for several conservation area, such as Protected Forest of Mt. Manglayang. In Perbup Sumedang No. 12 Tahun 2013, Government of Sumedang shows a commitment to maintain environmental quality, particularly  ITB Jatinangor as an eco-oriented campus. Biodiversity inventory is a basic information required for sustainable development programs, as mentioned in UU No.32 Tahun 2009. In this research, biodiversity of birds was selected because of its reliability as parameter in ecological research, ITB Jatinangor was divided into five areas representing general difference of land uses. Method used was point count combined with timed species count. The data was interpreted into Shannon-Wiener index (H’), birds distribution in each area, and trophic guild distribution. 42 species from 28 families were recorded with the medium level of diversity (H’=2.73). Four Javan endemic species and nine government-protected species were also recorded. Mixed forest had the largest H value, followed by conservation area and the dam, student activity area, monoculture forest, and former rice field. Insectivore species were the most abundant trophic guild (54%) indicating the lack of flowering and fruiting trees. It also showed character of urban environment with high human disturbance. Keywords:  birds, diversity, distribution, ITB Jatinangor
PEMANFAATAN LIMONEN DARI KULIT JERUK NIPIS DALAM PEMBUATAN LILIN AROMATIK PENOLAK SERANGGA Kartika, Kartika; Rizki, Fika Awalia; Amanatufahmi, Eva Hardiani; Lestari, Tyas; Sa’diah, Iis
Program Kreativitas Mahasiswa - Penelitian PKM-P 2014
Publisher : Ditlitabmas, Ditjen DIKTI, Kemdikbud RI

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Abstract

One of untapped potentials of agro-wastes from the manufacture of lime juice squeezed lime juice (Jeniper) in Kuningan is lime peel. The waste is simply thrown away, whereas lime peel can be used or recycled into other products of economic value. A good way is to extract the compound limonene from citrus fruit peel, then limonene is mixed with paraffin to produce aromatic candle that has a variety of advantages such as an insect repellent, air freshener, and as aroma therapy. Aromatic candles from that recycling have a scent that is not too overpowering so it does not cause excessive VOC but remain optimal in the expulsion of insects. In addition, this candle has the same form as candles in general, so the wax remains affordable price if commercialized. This study aims to determine the amount of limonene extract concentration of lime peel that can produce aromatic candle insect repellent (repellen). This study uses experimental design with 4 complete treatment randomized design that is the addition of extracts of limonene 0%, 0.3%, 0.4%, and 0.5%. Subjects were Periplaneta americanus and 15 panellists. The data were then analyzed with One-Way Analysis of Variances (ANOVA) or analysis of variance. Hedonic test results of 15 aromatic candles panellists are as follows: The panellists liked the resulting aromatic candles. In the repellence test there were significant differences between the wax concentration 0%, 0.3%, 0.4% and 0.5%. Wax containing limonene as much as 0.5% have a higher effectiveness in repel insects (repellent) in this case cockroaches. Keywords:  Lime peel, Limonene, Aromatic candles, Repellent
PERANCANGAN SISTEM KOORDINASI DAN KENDALI FORMASI UAV QUADROTOR UNTUK OPTIMALISASI MITIGASI BENCANA Pujantoro Tnunay, Ishak Hilton; Abdurrohman, Muhammad Qodar; Awwalur Rizqi, Ahmad Ataka; Faris, Muhammad; Puspita Sari, Dwi Retno
Program Kreativitas Mahasiswa - Penelitian PKM-P 2014
Publisher : Ditlitabmas, Ditjen DIKTI, Kemdikbud RI

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Abstract

Indonesia is located between 2 continental plates in which causes the disaster often happens. One of the solution to encounter the mapping and searching after disaster is employing UAV robots. Quadrotor is one of these underlying robots that widely used due to its highly maneuverability, cheap, and less run-way. Instead of using single quadrotor which is less efficient and needs more time, we use multi-quadrotor system. These agents will coordinate to each other and form a formation, thereby it can be used to optimize the disaster monitoring process by multi-quadrotor. This work begins as follows: The study of formation and coordination of multi UAV system.  Afterwards, we design the path-planning and formation control algorithm based on potential fields for Quadrotor. Otherwise, we also employ visual navigation method combined with GPS in quadrotor to obtain its global position. In simulation, it can be showed that our approach works well. in the future we will apply it entirely in real quadrotor. Moreover, the results of this research have been published in some international conference, even receive a best paper award as well. Keywords:  Disaster Monitoring, Quadrotor, Visual Navigation, Path Planning, Formation Control
PEMODELAN DAN PERAMALAN JUMLAH PENGUNJUNG KBS MENGGUNAKAN MODEL VARIASI KALENDER ARIMAX Arifani, Indry; Rahmayanti, Weny; Putri, Tesalonika; Kurniasari, Vira Oktavia; Anky, Alicia Mutiara
Program Kreativitas Mahasiswa - Penelitian PKM-P 2014
Publisher : Ditlitabmas, Ditjen DIKTI, Kemdikbud RI

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Abstract

Surabaya zoo (KBS) is one of zoo in Indonesia, which has benefits as a wildlife conservation and educational tours so that its existence is needed. Then research is held for predicting number of the Kebun Binatang Surabaya’s visitors in the future. The forecast results are used as a reference and recommendation by the manager of Kebun Binatang Surabaya in making the determination of policy and long-term development. Forecasting has been made by applying ARIMAX calendar variation model and the results are used to determine potential future KBS as The Biggest Zoo In South East Asia. The data used is about the number of visitors per month, start at January 2005 to December 2013, analysis was performed using the Box-Jenkins ARIMA models for estimating the order and Variations Calendar to capture seasonal patterns measured in calendar hijriyah (non-masehi). Keywords:  Box-Jenkins, Kebun Binatang Surabaya, Forecasting, Variations Calendar
KATALIS ASAM PADAT SILIKA TERSULFONASI UNTUK PROSES PEMBUATAN MINYAK PELUMAS Prasetyo, Andrianto; Sembiring, Almira Cristy; Rahmi, Arika Fadhia
Program Kreativitas Mahasiswa - Penelitian PKM-P 2014
Publisher : Ditlitabmas, Ditjen DIKTI, Kemdikbud RI

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Abstract

In the process of crude palm oil (CPO) to be lubricant, homogeneous acid catalyst is commonly used. This kind of catalyst has some disadvantages including the difficulty to remove well from the product and corrosion problem. Therefore, it is necessary to develop solid acid catalyst that is easy to be removed from the product. The purpose of this work were to determine the effect of the template removal method and the concentration of polyethylene glycol (PEG). In this work, solid acid catalyst of sulfonated silica from water glass (sodium silicate) was prepared. The silica pores were expanded by templating using PEG. Two methods were used for template removal: calcination at 550C and solvent extraction using dimethyl sulfoxide (DMSO). The results showed that although calcination provided better performance in removing PEG, the silica produced tended to shrink. On the other hand, solvothermal extraction could avoid the shrinkage to give higher surface area. The higher surface area indicates that there are more active sites available for sulfonate groups to be grafted to exchange silanol groups on the silica surface. The results showed that ionic capacity of the sulfonated-silica obtained by solvothermal extraction was larger than that of calcination. The ionic capacity took the value of approximately 12.603 mmol/g silica. This result approached the ionic capacity of resins that is commonly used as a catalyst in the process of CPO to be lubricant. Keywords:  Crude Palm Oil, Solid Catalyst, Sodium Silicate, Lubricant
NEMATODA ENTOMOPATOGEN INDIGENOUS DALAM UJI PERBANDINGAN EFIKASI PENGENDALIAN Plutella xylostella (Lepidoptera: Plutellidae) Febrianasari, Ria; Azizah, Maziatul Umi; Damayanti, Annike Putri; Arif Zulfahmi, Muhamad Guruh
Program Kreativitas Mahasiswa - Penelitian PKM-P 2014
Publisher : Ditlitabmas, Ditjen DIKTI, Kemdikbud RI

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Abstract

The problems in cultivated cabbage is cabbage caterpillar (Plutella xylostella). Attack of P. xylostella can result in a loss of 100% yield. Entomopathogenic nematode (EPNs) are parasite nematode that attack  specific insect larvae but is safe for animals and plants and has great opportunity for becoming pest control such as P. xylostella. The objective of this research was to compare the EPNs with synthetic pesticide to control P. xylostella. The research was conducted in Pandesari village, Pujon subdistrict, Malang district started on February until May 2014. The research used single-factor group of a randomized design with six treatments and four replications, designated as control (without treatment), EPNs 200 J1/ml, EPNs 400 J1/ml, EPNs 800 J1/ml, two pesticides with active ingredients klorpirifos and spinosad. Effectivity of insecticide (EI) from data were calculated with Abbot formula. Treatments that showed value greater than 70% was categorized as effective against target pest. The treatments gave significant effect to larvae population and damage percent incident variable. The result showed that EPNs was isolated from soil isolation in high populations (22.185 J1/ 0,25 ml). High doses give high control effectiveness and EPNs 800 J1/ml give best control effectiveness (78,36%).  Keywords:  Plutella xylostella, Entomopathogenic nematode,
MEDIA SI ODIK STOCOPIC UNTUK MENGURANGI BUDAYA MENGHAFAL UNSUR KIMIA SISTEM PERIODIK Melisa, Mey; Herlina, Endang; Syafitri, Diah; Bella, Riska
Program Kreativitas Mahasiswa - Penelitian PKM-P 2014
Publisher : Ditlitabmas, Ditjen DIKTI, Kemdikbud RI

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Abstract

The background of this article is come up from the problem in chemistry learning process for senior high school exactly about the foundation of chemistry which is periodic table. The aimed of this research is to find out the influence of Si Odik Stocopic’s medium to minimize the memorizing’s way in periodic table chemistry material. The method that used in this research is Quasi Experiment Design with Nonequivalent Control Group Design type, with the student’s group sample which is divided into control class and treatment class by random way. The research was held in even semester students of 2013-2014 during one month in private school of SMA IT Raudhatul Ulum Sakatiga, Indralaya. The result from this research is proved that using medium of Si Odik Stocopic was totally optimize the use right brain, indeed, it will increase the student’s understanding, student’s ability memory for chemistry lesson and also to minimize the memorizing’s way in chemistry learning process. Keywords:  Medium of Si Odik Stocopic, Right Brain, Element Periodic System

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