Journal of Natural Sciences and Mathematics Research
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.
Articles
159 Documents
<![CDATA[Effect of Thickness on Thermal Conductivity Based on Waste Newspaper Particle Board ]]>
<![CDATA[Theasy, Yoan]]>;
<![CDATA[Yulianto, Agus]]>;
<![CDATA[Astuti, Budi]]>
<![CDATA[ Journal Of Natural Sciences And Mathematics Research Vol 3, No 1 (2017): Volume 3, Nomor 1, 2017 ]]>
Publisher : <![CDATA[Faculty of Science and Technology, State Islamic University Walisongo Central Java ]]>
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DOI: 10.21580/jnsmr.2017.3.1.1696
<![CDATA[Waste newspaper by most people still considered as waste that has not been used optimally, and it is the one of processed materials from wood which has lignocellulose. The material has the potential to produce particle board to test the value of thermal conductivity, which it is expected to be used as heat insulator. The process of producing particle board is by mixing 450 grams pureed newspaper with 260 grams PVAC, then print it with size (12x7)cm2 with the thickness of 0.5cm; 1 cm; 1.5 cm; 2 cm; 2.5 cm; 3 cm. The process to make particle board drying is for 5 days and the test of thermal conductivity using a 100 watt heat source, and an infrared thermometer. The result obtained from the value of thermal conductivity from newspaper particle board is when more higher value of particle board thickness then more higher the thermal conductivity value. From these result it can be concluded that the particle board which can be used as heat insulation material is the one that has a thermal conductivity value of 0.066 W/ mï°C; 0.125 W/ mï°C; 0.0167 W/ mï°C with thickness range of 1 cm to 2 cm.©2017 JNSMR UIN Walisongo. All rights reserved.]]>
<![CDATA[The Influence of Alginate and CaCl2 concentration Towards Betacyanin content and Antioxidant Activity of Red Dragon Fruit (Hylocereus Polyrhizus) restructuring product ]]>
<![CDATA[Bangalino, Wira Wanti]]>;
<![CDATA[Lestario, Lydia Ninan]]>;
<![CDATA[Riyanto, Cucun Alep]]>
<![CDATA[ Journal Of Natural Sciences And Mathematics Research Vol 2, No 2 (2016): Volume 2, Nomor 2, 2016 ]]>
Publisher : <![CDATA[Faculty of Science and Technology, State Islamic University Walisongo Central Java ]]>
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DOI: 10.21580/jnsmr.2016.1.2.1659
<![CDATA[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.]]>
<![CDATA[Current State: The Development of Thin Film Solar Cells Based on Kesteritee Compound ]]>
<![CDATA[Fianti, Fianti]]>;
<![CDATA[Munir, Badrul]]>;
<![CDATA[Kim, Kyoo Ho]]>;
<![CDATA[Amal, Mohammad Ikhlasul]]>
<![CDATA[ Journal Of Natural Sciences And Mathematics Research Vol 2, No 1 (2016): Volume 2, Nomor 1, 2016 ]]>
Publisher : <![CDATA[Faculty of Science and Technology, State Islamic University Walisongo Central Java ]]>
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DOI: 10.21580/jnsmr.2016.1.1.1641
<![CDATA[Thin film solar cell experience fast development, especially for thin film solar cell CdTe and Cu(In,Ga)Se2 (CIGS). However, the usage of rare element in the nature such as In, Te, and Ga and toxic such as Cd give limitation in the future development and production growth in big scale. Development of other alternative compound with maintain the profit of electronic and optic character which get from CIGS chalcopyrite compound will be explain. Compound of Cu2ZnSnSe4 (CZTSe) is downward compound from CIGS with substitute the In and Ga element with Zn and Sn. The compound kesterite structure can be modified with variation of chalcogen element to get wanted character in solar cell application. Efficiency record of photovoltaic devices conversion used this compound or downward reach 9.7%.©2016 JNSMR UIN Walisongo. All rights reserved.]]>
<![CDATA[Construction of Key Echange Protocol over Max-Plus Algebra to Encrypt and Decrypt Arabic Documents ]]>
<![CDATA[Muanalifah, Any]]>
<![CDATA[ Journal Of Natural Sciences And Mathematics Research Vol 1, No 2 (2015): Volume 1, Nomor 2, 2015 ]]>
Publisher : <![CDATA[Faculty of Science and Technology, State Islamic University Walisongo Central Java ]]>
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DOI: 10.21580/jnsmr.2015.1.2.1601
<![CDATA[In this paper, we consider the operation of matrix in Max-plus Algebra to construct a key public to encrypt and decrypt arabic document. Matrix operation in max-plus algebra is slight different with matrix operation in classical. In this paper, we also use a modular 37 to translate it into arabic text (arabic letter with number and special character).]]>
<![CDATA[Analysis of Optical Properties TiO2, ZnO, TiO2: ZnO Thin Films Deposited On Glass Substrate Using Sol-Gel Spray Coating Method And Application For Degradation Of Dye Liquids. ]]>
<![CDATA[AMANANTI, WILDA -]]>;
<![CDATA[amananti, wilda]]>
<![CDATA[ Journal Of Natural Sciences And Mathematics Research Vol 3, No 2 (2017): Volume 3, Nomor 2, 2017 ]]>
Publisher : <![CDATA[Faculty of Science and Technology, State Islamic University Walisongo Central Java ]]>
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DOI: 10.21580/jnsmr.2017.3.2.1960
<![CDATA[TiO2, ZnO and TiO2: ZnO Thin film have been deposited on glass substrate by sol-gel method of Spray Coating Technique. TiO2: ZnO and ZnO can form well above the glass substrate. The precursor solution of TiO2 and TiO2: ZnO is deposited using sol-gel method of Spray Coating Technique. Zinc acetate dehydrate (Zn (COOCH3) 2 .2H2O was dissolved into an isopropanol ((CH3) 2CHOH) solvent and then added monoethanolamine (MEA: HOCH2CH2NH2) .The solution was stirred at 70oC until a clear and homogeneous solution was obtained.Titanium Tetraisopropoxide (TTIP) 0 , 73 ml was dissolved into 4.27 ml of isopropanol and 20 ml of ethanol, after which the solution was titrated with 5 ml of ethanol, 3.4 ml acetic acid and 0.26 ml H2O, then stirred on hot plate stirrer at room temperature ( Further, the ZnO, TiO2 and TiO2: ZnO precursor gels were sprayed on a glass substrate that was heated at a temperature of 450 ° C. The results of the TiO2 thin film bandgap energy measurement were 3.58 eV, ZnO thin films of 3.08 eV, and a thin layer of TiO2: ZnO of 3.06 eV Doped photodegradation dye Direct blue 10 ppm using UV-reactor The highest percentage of degradation is found in TiO2: ZnO thin film]]>
<![CDATA[The Effect of Gel-Electrolyte on Dye Sensitized Solar Cell (DSSC) Prototype based on Nanosized-TiO2 Using Mangosteen Pericarp as Absorber ]]>
<![CDATA[Kumila, Biaunik Niski]]>;
<![CDATA[Prajitno, Gontjang]]>
<![CDATA[ Journal Of Natural Sciences And Mathematics Research Vol 3, No 1 (2017): Volume 3, Nomor 1, 2017 ]]>
Publisher : <![CDATA[Faculty of Science and Technology, State Islamic University Walisongo Central Java ]]>
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DOI: 10.21580/jnsmr.2017.3.1.1692
<![CDATA[Dye Sensitized Solar Cell (DSSC) with Fluorine deped Tin Oxide (FTO) substrat and nanosize-TiO2 layer sensitized by âdyeâ ,mangosteen pericarp extract, was succesfully fabricated. Gel-Electrolyte as electron regenerator was synthesized by adding Polyethylene Glycol (PEG) 1000 to electrolyte solution while nanosize-TiO2 was synthesized by co-precipitation method from TiCl3 solution. The crystal size of TiO2 characterized by X-Ray Diffraction is 10.5 nm in size. The solar absorbance of âdyeâ mangosteen pericarp was measured using UV-Vis Spectrophotometer and it showed that the dye can absorb photon at Near Ultraviolet (NUV) to yellow visible light. Nanosize-TiO2 based DSSC with gel-electrolyte successfully reached short circuit current up to 30.9 μA, open circuit voltage 398.3 mV and performed the long term stability. ©2017 JNSMR UIN Walisongo. All rights reserved]]>
<![CDATA[Antioxidant Activity and Antibacterial Seaweed Methanol Extract (Sargassum Duplicatum J. Agardh) and Its Potential as a Natural Preservative Alternative to Salted Eggs ]]>
<![CDATA[Firmansyah, Satria Bagus]]>;
<![CDATA[Firmansyah, R. Arizal]]>;
<![CDATA[Hayati, Nur]]>
<![CDATA[ Journal Of Natural Sciences And Mathematics Research Vol 2, No 1 (2016): Volume 2, Nomor 1, 2016 ]]>
Publisher : <![CDATA[Faculty of Science and Technology, State Islamic University Walisongo Central Java ]]>
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DOI: 10.21580/jnsmr.2016.1.1.1648
<![CDATA[The research activity of the antioxidant and antibacterial esktrak methanol seaweed Sargussum duplicatum J. Agardh as well as its potential as an alternative natural preservative salted egg has been done. Seaweed extract S. duplicatum Jj. Agardh assayed phytochemistry and the content of total phenolic with variation of temperature. Metabolite secondary in seawed extract obtained through maseration using methanol solvent. The extract are partitioned, R1 and R2. R1 sample is a sample without treatment and sample R2 is a sample with 45 minutes for warming treatment in waterbath temperature to 100 °C. Phytochemical content in seawed of S. duplicatum J. Agardh are flavonoid dan steroid. Phytochemical content and phenolic total have positive correlation to antioxidant activity. Antioxidant activity with DPPH method yielded IC50 = 143.03 μg/mL (R1) and 357.95 μg/mL (R2). Antibacterial activity assay carried out trough diffusion method with SSA media (Salmonella-Shigella Agar). Inhibition value toward Salmonella is 1.120 mm and 1.15 mm with control is chloramphenicol. Salmonella sp.is pathogenic bacteria that presents in egg and causes decay on the egg. Discussion about antibacteria activity results of seawed extract of S. duplicatum J. Agardh are suggested to apply toward egg preservation method. ©2016 JNSMR UIN Walisongo. All rights reserved]]>
<![CDATA[The Influence of Waste of Pineappleâs Peel (Ananas Comosus (L) Merr) As The Source of Bromelain Enzyme to Increase Meat (Local Beef) Quality ]]>
<![CDATA[Alawiyah, Nur]]>;
<![CDATA[Nirwana, Ratih Rizqi]]>;
<![CDATA[Tarwiyah, Siti]]>
<![CDATA[ Journal Of Natural Sciences And Mathematics Research Vol 1, No 2 (2015): Volume 1, Nomor 2, 2015 ]]>
Publisher : <![CDATA[Faculty of Science and Technology, State Islamic University Walisongo Central Java ]]>
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DOI: 10.21580/jnsmr.2015.1.2.1622
<![CDATA[The subjects of this research are waste of pineppleâs peel (Ananas Comosus (L) Merr) and local beef that were obtained from Jrakah traditional market, Ngaliyan-Semarang. The data technique analysis of this research is descriptive statistics. The result of this research shows that there is influence of waste of pineappleâs peel as source of bromelain enzyme to increase meat quality, especially tenderness. The higher the bromelain enzyme concentration used, the more tender the meat, although will be may increase the score of cooking loss. The meat that is submerged with the highest concentration (40%) of bromelain enzyme solution has score of 0.6662 and 45% of cooking loss. The organoleptic quality identification of meat that is submerged with bromelain enzyme solution, generally is better than the control meat. The meat that is submerged with bromelain enzyme solution gives better appearance, flavor, juiceness, and tenderness than the control meat. © 2015 JNSMR UIN Walisongo. All rights reserved.]]>
<![CDATA[Synthesis and Structure Characterization of SiO2 from Petung Bamboo Leaf Ash (Dendrocalamus asper (Schult.f.) Backer ex Heyne) ]]>
<![CDATA[Udaibah, Wirda]]>;
<![CDATA[Priyanto, Agus]]>
<![CDATA[ Journal Of Natural Sciences And Mathematics Research Vol 3, No 1 (2017): Volume 3, Nomor 1, 2017 ]]>
Publisher : <![CDATA[Faculty of Science and Technology, State Islamic University Walisongo Central Java ]]>
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DOI: 10.21580/jnsmr.2017.3.1.1697
<![CDATA[The Research about Synthesis and Characterization of SiO2 have been worked. We have synthesized Silica from âpetungâbamboo leaf ash as SiO2 source. This step used sol gel methode. SiO2 were characterized by Fourier Transform Infra Red (FTIR) to investigated the stucture andX-Ray Diffaction to know about structure and crystallinity. FTIR spectra show peak at 617,22 cm-1 area that spesific for Si-H bond, peak at 786,96 cm-1and 1095,57 cm-1 area specific for Si-O-Si bonds. Difractogram of SiO2 show that there are peak at 2θ 21,99; 31,67 and 38,88 were specific for SiO2 that calcinated at 800oC, while for SiO2 that calcinated at 400oC there were no peak at 2θ 31,67 dan 38,88. That peaks not shown may be because low crystallinity of SiO2 that calcinated at 400oC. Calcination temperature greatly affects the crystallinity of SiO2.©2017 JNSMR UIN Walisongo. All rights reserved.]]>
<![CDATA[Anti Bacterial Activity of Fungi TIF-1 as Saponin Producer ]]>
<![CDATA[Eden, Willy Tirza]]>;
<![CDATA[Kusumo, Ersanghono]]>;
<![CDATA[Susatyo, Eko Budi]]>;
<![CDATA[Kasmui, Kasmui]]>
<![CDATA[ Journal Of Natural Sciences And Mathematics Research Vol 2, No 2 (2016): Volume 2, Nomor 2, 2016 ]]>
Publisher : <![CDATA[Faculty of Science and Technology, State Islamic University Walisongo Central Java ]]>
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DOI: 10.21580/jnsmr.2016.1.2.1660
<![CDATA[Treatment of microbial resistance is one of humankinds 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.]]>
