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INDONESIA
Jurnal ILMU DASAR
Published by Universitas Jember
ISSN : 14115735     EISSN : 24425613     DOI : -
Core Subject : Science, Education,
Jurnal ILMU DASAR (JID) adalah jurnal ilmiah yang melingkupi bidang matematika, fisika, kimia dan biologi. Naskah yang diusulkan untuk diterbitkan Jurnal Ilmu Dasar adalah naskah yang belum pernah diterbitkan dan atau tidak sedang dipertimbangkan penerbitannya di majalah lain. Jurnal Ilmu Dasar menerima tulisan hasil penelitian dasar (bukan aplikasi) untuk bidang matematika, kimia, fisika, dan biologi. Naskah ilmiah ditulis dalam bahasa Indonesia atau dalam bahasa Inggris yang baik. Secara lebih detail dapat dilihat dari pedoman penulisan.
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Articles 10 Documents
Search results for , issue "Vol 20 No 2 (2019)" : 10 Documents clear
Discriminant AnalysisFor Cluster Validation In A Case Study of District Grouping In Jember Regency Based On Poverty Istiqomah, Fikriana Nur; Tirta, Made; Anggareni, Dian
Jurnal ILMU DASAR Vol 20 No 2 (2019)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (469.156 KB) | DOI: 10.19184/jid.v20i2.9862

Abstract

Cluster validation is a procedure to evaluate the results of cluster analysis quantitively and objectively on a data. The validation process is very important to get the results of a good and appropriate grouping. In the validation process, the author uses internal validation, stability, and discriminant analysis test. This study aims to obtain validation results from the hierarchy and kmeans method. This data grouping uses “iris” simulation data, which results from the grouping method used can be applied to the original data to see which vaidation method is used for all data and produce an optimal grouping. The result of the study show that in the “iris” data, a single linkage link is an appropriate grouping method because the result of the grouping are optimal for all validations and classification of group members whose groups are significant. In District poverty data in Jember Regency with a single linkage link optimal grouping was obtained and complete linkage links were also used as a method that resulted in optimal groupig for all validation. Cluster validation discriminant analysis test is appropriate for various types of data in general annd shows that single linkage methods are better than other methods for grouping and validation methods for “iris” data and District data in Jember Regency based on variabels of poverty status. Keywords: Cluster Analysis, Diskriminant Analysis, Multivariate Analysis, Validation Cluster.
Essential Oil Composition of Rose Flowers from Karangpring Village Jember District Extracted by Distillation and Enfleurage Oktavianawati, Ika; Letisya, Nanda; Citra, Priscillia; Utari, Dwi Purwita; Winata, I Nyoman Adi; Handayani, Wuryanti; Nugraha, Ari Satya
Jurnal ILMU DASAR Vol 20 No 2 (2019)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (346.523 KB) | DOI: 10.19184/jid.v20i2.8995

Abstract

Karangpring is one tourist destination villages in Jember district which is popular with beautiful large rose field areas. Therefore, this area grows to be a leading producer of rose flowers in Jember district. However, the bulky presence of these flowers made its price becomes lower in regular days. Local community only uses and sells these fresh flowers as the flower for funeral. The rose flower has a great potency to be explored as a source of rose essential oil production. To date, there is no previous research on studying rose flowers from Karangpring village for its potency on the essential oil production. In this research, rose flowers were subjected to be extracted of its essential oil using two extraction methods, distillation, and enfleurage. Hydrodistillation resulted two phases of distillates, above part formed a cloudy white phase as a normal essential oil extracted from plants, and the lower phase was an aqueous phase containing rose hydrosols. Both phases of these condensates were analyzed using GCMS. Data explained that above phase, with a yield oil of 0.07%, only contains long-chain hydrocarbons such as n-nonadecane, n-heptadecane, 9-nonadecene, and eicosane, while the lower phase only contains 2-phenylethyl alcohol. On the other hand, enfleurage of fresh rose flowers resulted in 0.06% oil yield. GCMS analysis of this oil shows that 2-phenylethyl alcohol, eugenol, and phenylacetic acid are three major compounds which take more than 85% of total rose absolute. The results show that enfleurage is a better method for extracting rose oil in better quality than using the distillation method, in term of the variety of volatile components. Meanwhile, hydrodistillation is still benefiting from producing rose water that is qualified as an industrial additive agent for food and cosmetic productions or even a new potent of agromedicine products. Keywords: rose, rose oil, rose water, rose absolute, distillation, enfleurage.
Adulticide Efficacy of Artemisia vulgaris L. against Aedes aegypti L. Ninditya, Vika Ichsania; Purwati, Endah; Utami, Ajeng Tyas; Marwaningtyaz, Aprillyani Sofa; Fairuz, Nadia Khairunnisa; Hamid, Penny Humaidah
Jurnal ILMU DASAR Vol 20 No 2 (2019)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (550.32 KB) | DOI: 10.19184/jid.v20i2.8174

Abstract

Aedes aegypti is the vector of various arthropod-borne diseases such as dengue fever, chikungunya and currently, zika. This study aimed to evaluate Artemisia vulgarisas other adulticides for controlling Ae. aegypti. Indonesian ministry of health hasbeen reported that more than 70.000 dengue fever human cases have occurred in 2015 covering 34 provinces which mean that dengue fever has spread now into all national territories. Eradication of Aedes still largely depends on insecticides, which is the most cost-effective strategy, and often inefficient due to resistance development in exposed Aedes population This study was designed to use of Centers for Disease Control and Prevention (CDC) bioassay standard. CDC bottles were coated with the ethanolic solution of extract with a concentration of 10, 50, 100, 500, 1000, 5000, 10000, 50000, and 100000 g per bottle. F0 mosquitoes were used for all experiments. Death and surviving mosquitoes were evaluated based on CDC standard assay. The test was performed with 10-25 adult mosquitoes every bottle and each concentration was repeated in triplicates. The results showed that LC50 and LC90 were 5790 g and 52110 g respectively after 120 minutes exposure to the extract. There was no mortality in ethanol control group. A. vulgaris significantly (P < 0.05) have adulticidal activity against Ae. aegypti. However, A. vulgaris have been reported to have larvacidal activity against Ae. Aegypti. These results indicated clearly that A. Vulgaris might act as the candidate of bioinsecticides for controlling Ae. aegypti. Keywords: Aedes aegypti, Artemisia vulgaris, adulticide,bio insecticide.
The Correlation Between Type of Land Use and Water Quality in the Rembangan River, Jember Regency Wardiani, Fefi Eka; Wimbaningrum, Retno; Setiawan, Rendy
Jurnal ILMU DASAR Vol 20 No 2 (2019)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (653.226 KB) | DOI: 10.19184/jid.v20i2.8939

Abstract

The river is one of the important water sources and at this time the river water quality has decreased.The type of land use around the river is thought to have a significant contribution to river water quality. This research was conducted to determine of correlation between the type of land use and water quality in Rembangan River, Jember Regency.The study was carried out at four stations that passed through secondary forests, coffee plantations, rice fields and residential housing. The data of biodiversity and density of plants and physical-chemical parameters of river water were noted, and benthic macroinvertebratessamples were collected at each station. Data of biodiversity and density plants were used to determine of environmental services index (ESI) values. Benthic macroinvertebrates samples were identifiedat the family level, and after that the tolerance score and the abundance of each family was determined. The last two data were analyzed to determine of Family Biotic Index (FBI) values.The value of ESI, physico-chemical parameters of river waterand FBI were analyzedto determine the relationship between these variables by using Pearson correlation analysis (α < 0.05).The research result revealed that the type of land use (ESI) was significantly related to the biological quality of river water (FBI) as indicated by the p value > 0.05. The correlation characteristic is negative and very strong (R = 0.886). High ESI values indicate that the diversity and carbon sequestration of plant community around the river are in good condition and vice versa. Low HBI values indicate good river water quality and vice versa. Based on this research, each land use type must provide space for the natural growth of the plant communityto maintain the quality of river water to remain good. Keywords: river, benthic macroinvertebrates, land use, water quality, ESI, HBI.
Halal Identification for Meatballs in Pasar Tambun, Bekasi, West Java By Acrylamide Gels Hidayati, Wahyu; Apriaji, Meta; Situmorang, Almawati; Agustian, Ifany; Janah, Miftahul
Jurnal ILMU DASAR Vol 20 No 2 (2019)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (180.445 KB) | DOI: 10.19184/jid.v20i2.9062

Abstract

Halal foods are important for Moslems and there is a Moslem’s duty to eat only Halal foods which is stated in Holly Qur’an. Moreover, government already made some regulations related to Halal certification which should be obeyed by food industries, including home industries. This research aimed to detect a porcine component in meatballs sold in Pasar Tradisional Tambun, Bekasi, West Java by using SDS-PAGE Here, we combined mechanical and chemistry methods to extract the proteins and compared the protein profiles on an acrylamide gel. We got specific bands of bovine and porcine proteins according to proteins bands that showed on the gel and after comparing with the samples we found that one sample had combining profiles in the extract. We concluded that three samples used in this research were halal, meanwhile, another sample containing porcine substances. Keywords: Halal, Proteins, Bovine, Porcine, Meatballs, SDS-PAGE.
The Effect of Nonwoven Microfiber Substrate Polypropylene Thickness to Air Filtration Performance of Polyacrilonitrille Nanofiber Rajak, Abdul; Syahputra, Tri Siswandi; Munir, Muhammad Miftahul; Khairurrijal, K.
Jurnal ILMU DASAR Vol 20 No 2 (2019)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1512.963 KB) | DOI: 10.19184/jid.v20i2.9658

Abstract

Since a nanofiber medium on itself is soft and fragile and cannot be used alone as air filters. Coating nanofiber on a rigid substrate to form a composite that can be handled readily is necessary. Beside can improve the filtration efficiency, adding the substrate will also save the use of nanofibers mat itself. The aim of this study is to evaluate the effect of substrate thickness on the performance of nanofibers mat in aerosol filtration in order to find the optimum thickness of substrate that can increase the quality of nanofiber filter. The substrate used was a low cost microfiber non-woven fabric made from polypropylene (PP). The nanofibers mat was composed of electrospun polyacrylonitrile (PAN) with concentration of 9 wt.% which dissolved at N,N dimethylformamide (DMF). Five variations of PP different in thickness was used as substrate. From the SEM image, it was found that there is increasing fiber diameter of PAN after electrospun into PP substrate. From the porosity estimation of each nanofiber, it was found that the porosity decreased with increasing the substrate thickness. For test the performance of nanofiber filter, the particles of polystyrene latex (PSL) which generated by atomizer was used as the aerosol particle. In addition, to evaluate the performance filter in PM2.5 filtration, the experiment was carried out with generate the smoke from burning incense. Air filtration performance of all variations is obtained by comparison the results of measurement including: pressure drop, efficiency and quality factor. From the results, there is limitation on the substrates thickness based on the value of the quality factor obtained. Overall, PP nonwoven as the substrates gives the great contribution on the efficiency of PAN nanofiber. Keywords: substrate, polypropylene, thickness, nanofiber, air filtration.
Evaluation of Adaptation and Production of Three Selected Cassava (Manihot esculenta Crantz) in Peat Land Area of Central Kalimantan Fitriani, Hani; Hartati, N. Sri; Sudarmonowati, Enny
Jurnal ILMU DASAR Vol 20 No 2 (2019)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (178.553 KB) | DOI: 10.19184/jid.v20i2.7449

Abstract

Along with the increasing the of the land-use change of the fertile agricultural land in Java, the better awareness has been subjected to the importance of function peat land for agricultural development. Cassava (Manihot esculenta Crantz) is a tuber plant that potentially developed as important carbohydrate source. The objective of this research was to identify superior cassava variety candidate of selected cassava developed by of Research Centre Biotechnology, LIPI which has high adaptation capability and yield in Central Kalimantan peat land area. This research was conducted from July 2010 through May 2011 in Central Kalimantan Province (Kalampangan dan Pulang Pisau in total of area 1.5 and 2.25 ha respectively). There were three genotypes of cassava tested, i.e. Iding (high amylose), Gebang (low amylose), and Menti (high starch) compared to Adira 4 (35 ton/ha) and Darul Hidayah (102.1 ton/ha). The variables observed were plant height (cm) and tuber weight (grams). Observations were conducted at the age of 10 months. Data was analyzed using SPSS version 16.0. The results showed that the plant height and yield were higher in Pulang Pisau than Kalampangan even though the difference is not significant (P ≤ 0,05). Darul Hidayah has highest plant height and yield, 229.8 cm and 2271 g respectively among other genotypes/varieties grown at Pulang Pisau even though the value was not significant, whereas in Kalampangan, Darul Hidayah showed the lowest yield (670 g). Based on the data obtained, the Darul Hidayah variety can be cultivated by farmers in Pulang Pisau peat land to fulfill the availability of superior cassava seedlings for food, feed and industry. Keywords: Peat, tuber yield, plant height, liquid organic fertilizer, yam wood.
Derivation Requirements on Prime Near-Rings for Commutative Rings Setyawati, Dian Winda; Habibi, Mochammad Reza; Baihaqi, Komar
Jurnal ILMU DASAR Vol 20 No 2 (2019)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (761.168 KB) | DOI: 10.19184/jid.v20i2.10297

Abstract

Near-ring is an extension of ring without having to fulfill a commutative of the addition operations and left distributive of the addition and multiplication operations It has been found that some theorems related to a prime near-rings are commutative rings involving the derivation of the Lie products and the derivation of the Jordan product. The contribution of this paper is developing the previous theorem by inserting derivations to the Lie products and the Jordan product. Keywords: Derivation, Prime Near-Ring, Lie Products and Jordan Products.
Catalytic Conversion From Plastic Waste by Silica-Alumina-Ceramic Catalyst to Produce an Alternative Fuel Hydrocarbon Fraction Juwono, Hendro; Tri Sujadmiko, M. Arif; Fauziah, Laily; Ayyun, Ismi Qurrota
Jurnal ILMU DASAR Vol 20 No 2 (2019)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (491.305 KB) | DOI: 10.19184/jid.v20i2.8829

Abstract

Liquid fuels from polypropylene plastic waste have been successfully performed by catalytic cracking method. The catalyst used is Al-MCM-41- Ceramics. The catalyst was characterized by XRD, SEM, Pyridine-FTIR, N2-Adsorption-Desorption, and the product of catalytic cracking were investigated by gas chromatography-mass spectroscopy (GC-MS). The catalyst was using three times at sample notify A,B and C. The results showed liquid fuels have the largest percentage of gasoline (C8-C12) are 92.76; 91.92 and 90.58 percent fraction produced. The performance of catalyst showed that reuseability number were decrease, but the charactersitic of liquid fuel produced were also be agreeable to commercial gasoline standard. Keywords: olypropylene waste plastics, liquid fuels, catalytic conversion, Al-MCM-41-Cer catalyst, reuseability number.
Determination of Sucrose Content in Sugarcane Liquids Through Angular Dispersion Angle Measurement Misto, M.; Mulyono, Tri; Cahyono, Bowo Eko
Jurnal ILMU DASAR Vol 20 No 2 (2019)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (337.885 KB) | DOI: 10.19184/jid.v20i2.8497

Abstract

In the sugar industry, it is important to measure the sucrose content of sugar cane so that an electronic system is needed for measurement. The system was employed an array photodiode as a sensor, red and green laser, operational amplifiers (opamp), an analog to digital converter from Arduino, and a computer. The main operation of the measurement system was conducted by the sensor and controller system in the computer. The controller was programmed with Basic program, a program that suitable for the device. The signal from array photodiode sensor is send to signal processing unit (opamp) and converted to digital signal by ADC. Then the digital code is countered by controller and displayed by monitor computer. Keywords: sugar content, array photodiode, Arduino.

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