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Journal of Natural Sciences and Mathematics Research

JNSMR
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Published by Universitas Islam Negeri Walisongo Semarang

ISSN : 26146487 EISSN : 24604453 DOI : https://doi.org/10.21580/jnsmr

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Materials Science & Nanotechnology Physics

Journal of Natural Sciences and Mathematics Research, an international journal, provides a forum for publishing the original research articles, review articles from contributors, and the novel technology news related to natural sciences and mathematics research. Scientific articles dealing with fundamental sciences, material sciences, mathematics, materials characterization, etc. are particularly welcome. The journal encompasses research articles, original research report, reviews, short communications and scientific commentaries in fundamental sciences and mathematics including: fundamental sciences, fundamental physics, fundamental chemistry, fundamental biology, mathematics, applied sciences, applied physics, applied chemistry,applied biology,applied mathematics and materials characterization.

Arjuna Subject : Umum - Umum

Articles 8 Documents

Search results for , issue "Vol 2, No 2 (2016): December" : 8 Documents clear

The Influence of Alginate and CaCl2 concentration Towards Betacyanin content and Antioxidant Activity of Red Dragon Fruit (Hylocereus Polyrhizus) restructuring product Wira Wanti Bangalino; Lydia Ninan Lestario; Cucun Alep Riyanto
Journal of Natural Sciences and Mathematics Research Vol 2, No 2 (2016): December
Publisher : Faculty of Science and Technology, Universitas Islam Negeri Walisongo Semarang

The purpose of this study was to determine the effect of alginate and CaCl2 concentration of antioxidant activity and betacyanin content of restructuring product of red dragon fruit, and to determine the best formulation of the product restructuring that produces antioxidant activity and the content of the highest betacyanin on product restructuring. Data were analyzed by 4x2 Factorial Design and Randomized Completely Block Design (RCBD) with 4 replications. As the first factor is the alginate concentration which are 2 %, 3 %, 4 % and 5 %. The second factors are calcium cloride (CaCl2 ) 0.5 % and 0.75 %, while as the block is the time analysis. To test the differences between treatments means, the Honestly Significant of Differences (HSD) were used at 5% level of significant.The results showed that the higher concentrations of alginate and CaCl2 causes declining content of antioxidant activity and betacyanin, the best results are obtained is at a concentration of 2% alginate and CaCl2 0.5% with betacyanin levels 0.537 ± 0.062 mg/g dry weight basis and 0.132 ± 0.011 mg / g wet weight basis. The antioxidant activity of H. polyrhyzus restructuring amounted to 77.452% ± 0.624. ©2016 JNSMR UIN Walisongo. All rights reserved.

Anti Bacterial Activity of Fungi TIF-1 as Saponin Producer Willy Tirza Eden; Ersanghono Kusumo; Eko Budi Susatyo; Kasmui Kasmui
Journal of Natural Sciences and Mathematics Research Vol 2, No 2 (2016): December
Publisher : Faculty of Science and Technology, Universitas Islam Negeri Walisongo Semarang

Treatment of microbial resistance is one of humankind's greatest challenges in terms of fight against infectious diseases. One way to overcome microbial resistance is discovery of potent new antimicrobial compounds against variety of microbial pathogens. Land is one potential source of microorganisms. This study aims to screen in order to get a fungal strains isolated from soil exposed to waste the pharmaceutical industry which possess antibacterial activity. Antibacterial activity test conducted on two types of bacteria, namely Staphylococcus aureus as Gram-positive bacteria and Escherichia coli as Gram-negative bacteria. The test results can be known isolates of fungi which has potential as an antibacterial, for then these are fermented for 10 days. Fermented then partitioned by using ethyl acetate. Initial screening showed that the fungi code TIF-1 as the most active fungi. Ethyl acetate soluble fraction was then identified the active compounds using thin layer chromatography method with various reagent spray. Bioautografi test results show that the saponins which play role in the antibacterial activity. ©2016 JNSMR UIN Walisongo. All rights reserved.

The Solution Of Nonhomogen Abstract Cauchy Problem by Semigroup Theory of Linear Operator Susilo Hariyanto
Journal of Natural Sciences and Mathematics Research Vol 2, No 2 (2016): December
Publisher : Faculty of Science and Technology, Universitas Islam Negeri Walisongo Semarang

In this article we will investigate how to solve nonhomogen degenerate Cauchy problem via theory of semigroup of linear operator. The problem is formulated in Hilbert space which can be written as direct sum of subset Ker M and Ran M*. By certain assumptions the problem can be reduced to nondegenerate Cauchy problem. And then by composition between invers of operator M and the nondegenerate problem we can transform it to canonic problem, which is easier to solve than the original problem. By taking assumption that the operator A is infinitesimal generator of semigroup, the canonic problem has a unique solution. This allow to define special operator which map the solution of canonic problem to original problem. ©2016 JNSMR UIN Walisongo. All rights reserved.

Richness of Butterflies Species at Three Habitat Type in Karimunjawa Island Central Java Wisnu Bayu Murti; Nugroho Edi Kartijono; Margareta Rahayuningsih
Journal of Natural Sciences and Mathematics Research Vol 2, No 2 (2016): December
Publisher : Faculty of Science and Technology, Universitas Islam Negeri Walisongo Semarang

The purpose of this research was to determine the species richness of butterflies on three type habitats in Karimunjawa Island. The research was conducted in May-October 2016. The research location on the island of Karimunjawa in three habitat types, edge of lowland tropical forest, paddy fields and settlements. Sampling was conducted four times of observation on each habitat type and Point Count Method. Identification species of butterflies use a guidebook Serangga Taman Nasional Gunung Halimun Jawa Bagian Barat and analyzed by uses Margalef Index. The results showed total 49 species of butterflies from 1402 individual (5 Family) was found in three types of habitat. Butterfly species richness highest in a edge habitat of lowland tropical forest (5.9), settlements (5.2), and paddy fields (4.6). ©2016 JNSMR UIN Walisongo. All rights reserved.

Preparation and Microstructure of Ag Doped on ZnO Sheilla Rully Anggita; Heri Susanto
Journal of Natural Sciences and Mathematics Research Vol 2, No 2 (2016): December
Publisher : Faculty of Science and Technology, Universitas Islam Negeri Walisongo Semarang

Various concentration of silver (Ag) dopant on ZnO (ZnO:Ag) 2-8 mol% with solgel method were deposited on glass substrates that has been heated to a temperature of 250°C for 1h using a thermal spray coating technique and then annealed on 400C for 1h. The obtained samples were characterized by Scanning Electron Microscopy (SEM). The effect of various Ag dopant on ZnO on the microstructure are investigated. The results showed that the microstructure of ZnO:Ag are the surface of ZnO make ganglia phase with Ag grains covered the surface. The addition concentration of Ag promotes the growth of ganglia phase and grain size. The surface of ZnO:Ag ≤4 mol% the growth grain Ag is more dominant than the growth of ZnO. The dopant Ag with a concentration of 4-8mol% ganglia structure begin to form with the presence of grains. Obtained the surface of ZnO:Ag 4 mol% begins to growth ganglia phase with the largest graindiameter is 304.8 nm. ©2016 JNSMR UIN Walisongo. All rights reserved.

Quality of Yeast Extract of Industry Yeast Press Alcohol waste as Drying result with Various Temperature Variation G. Maria Yusta; V. Irene Meitiniarti; E.B.E. Kristiani
Journal of Natural Sciences and Mathematics Research Vol 2, No 2 (2016): December
Publisher : Faculty of Science and Technology, Universitas Islam Negeri Walisongo Semarang

The content of yeast in industrial solid waste fermented beverages, has not been widely noticed and utilized, whereas many sources of nitrogen, vitamins and minerals are still present in this yeast. One of the utilization of waste yeast is processed into autolysis yeast extract. The drying process is often done using a spray dryer, but the process is costly so it is not efficient. In this study, we want to determine the temperature and drying time appropriate for maintain of yeast extract quality of yeast press. From this research, we concluded that a drying oven at 60 ° C for 6 hours is drying which does not damage the nutrient (protein, vitamine B2, carbohydrate, prolin, and lysin content) in yeast extract.©2016 JNSMR UIN Walisongo. All rights reserved.

Classical Cryptography of Wind's Eye Cell Circles Razis Aji Saputro; Risti Sokawati; Mudrikah Mudrikah; Nikken Prima Puspita
Journal of Natural Sciences and Mathematics Research Vol 2, No 2 (2016): December
Publisher : Faculty of Science and Technology, Universitas Islam Negeri Walisongo Semarang

This classic cryptographic algorithms was designed from the concept of cardinal directions and the S-box. circles Concept given 16 directions winds and 8 circles lined with each cells according to ASCII table. The process of encryption algorithm using two kinds of key symbol that are (k1) form 16 symbols of the wind, and (k2) is a 7-bit binary number. plaintext encryption process become chiperteks1 with forming angle against north wind and k1 roomates are from plaintext rotating accordance angle formed. Chipertext 1 to chipertext 2 using binary numbers divided become r1 as directions displacement away from the center circle and r2 move with rotating around the center circle. Spinning process followed directions clockwise circle if even if odd and vice versa. Decryption process is done by doing a backward on the algorithm by using the key k2 (r2 then r1) and then r1. Spins counter-encryption process. ©2016 JNSMR UIN Walisongo. All rights reserved.

Eigen Value of Fuzzy Matrices Suroto Suroto; Ari Wardayanti
Journal of Natural Sciences and Mathematics Research Vol 2, No 2 (2016): December
Publisher : Faculty of Science and Technology, Universitas Islam Negeri Walisongo Semarang

In this paper we discuss about eigen value of fuzzy matrices by adopted the substract operation of fuzzy matrices in Sidky and Emam (1992). By applying this substraction, it’s yields that some properties eigen value of fuzzy matrices in Joe Anand and Edal Anand is not satisfied.©2016 JNSMR UIN Walisongo. All rights reserved.

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Hamdan Hadi Kusuma

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Journal of Natural Sciences and Mathematics Research Published by Faculty of Science and Technology Universitas Islam Negeri Walisongo Semarang Jl Prof. Dr. Hamka Kampus III Ngaliyan Semarang 50185 Website: https://journal.walisongo.ac.id/index.php/JNSMR Email:jnsmr@walisongo.ac.id

Location
Kota semarang,

Jawa tengah

INDONESIA

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Abstract

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Abstract

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Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Hamdan Hadi Kusuma

Contact Email jnsmr@walisongo.ac.id

Phone -

Journal Mail Official jnmsr@walisongo.ac.id

Location Kota semarang, Jawa tengah INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

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Abstract

Abstract

Contact Name
Hamdan Hadi Kusuma

Contact Email
jnsmr@walisongo.ac.id

Phone
-

Journal Mail Official
jnmsr@walisongo.ac.id

Location
Kota semarang,

Jawa tengah

INDONESIA