International Journal of Science and Engineering最新文献_第7页

TREATMENTS OF PLASMA CORONA RADIATION ON SEAWEED Gracilaria Verrucosa (HUDSON) PAPENFUSS: Efforts to increase growth and biomass 等离子体电晕辐射对紫菜的处理:促进其生长和生物量

International Journal of Science and Engineering Pub Date : 2015-01-15 DOI: 10.12777/IJSE.8.1.75-79

F. J. N. Putra, Z. Muhlisin, S. Putro

{"title":"TREATMENTS OF PLASMA CORONA RADIATION ON SEAWEED Gracilaria Verrucosa (HUDSON) PAPENFUSS: Efforts to increase growth and biomass","authors":"F. J. N. Putra, Z. Muhlisin, S. Putro","doi":"10.12777/IJSE.8.1.75-79","DOIUrl":"https://doi.org/10.12777/IJSE.8.1.75-79","url":null,"abstract":"Gracilaria verrucosa (Hudson) Papenfuss has great potential to be farmed in the water resources in Indonesia. As natural resource, the weed has a major contribution in the field of industry both for human food and health. Efforts have been done intensively to increase the production capacity to meet the market demand especially gelatin, both national and international market. One of them is the application of plasma corona irradiation treatments on the weed to improve developmental pathways. The concept of plasma irradiation performed at atmospheric conditions may impact on nitrogen intrusion pathway that is important element in the growth of the weed. The aims of this study are to assess the potential impact of plasma irradiation in improving the growth of G. verrucosa and thus increase their biomass production. The treatments were done using five different duration of plasma irradiation, which were 2, 4, 6, 8, and 10 minutes at a 0,5mA stable source of voltage and 8kV of electrical current. Observations of growth rate include thallus length and biomass of G. verrucosa , that was observed every week for 28 days. The result showed that the growth of weed exhibited better than those without radiation. The best growth was reached in the group of treatment of 8 minutes irradiation, exhibited 65,91g of biomass and 9.5515% growth rate and length of thallus reached 22,33 cm and daily growth rate of 2.9759%. The lowest growth of the weed occurred in the treatment of 10 minutes irradiation, which was 44,82 g biomass, 8.123% growth rate, 17,13 cm thallus length with a daily growth rate of 1.9942%","PeriodicalId":14209,"journal":{"name":"International Journal of Science and Engineering","volume":"8 1","pages":"75-79"},"PeriodicalIF":0.0,"publicationDate":"2015-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66730630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

PROCESSING OF WATERMELON RIND DEHYDRATED CANDY 西瓜皮脱水糖的加工

International Journal of Science and Engineering Pub Date : 2015-01-15 DOI: 10.12777/IJSE.8.1.6-9

Nur Farah Hani Muhamad, W. Zainon, S. Kormin, Nur Atiqah Mohd. Akhir, Muhammad Shah Ali

引用次数: 6

Snap-Through Buckling Problem of Spherical Shell Structure 球壳结构的卡通屈曲问题

International Journal of Science and Engineering Pub Date : 2015-01-15 DOI: 10.12777/ijse.8.1.54-59

Sumirin Sumirin, N. Nuroji, Sahari Besari

{"title":"Snap-Through Buckling Problem of Spherical Shell Structure","authors":"Sumirin Sumirin, N. Nuroji, Sahari Besari","doi":"10.12777/ijse.8.1.54-59","DOIUrl":"https://doi.org/10.12777/ijse.8.1.54-59","url":null,"abstract":"This paper presents results of a numerical study on the nonlinear behavior of shells undergoing snap-through instability. This research investigates the problem of snap-through buckling of spherical shells applying nonlinear finite element analysis utilizing ANSYS Program. The shell structure was modeled by axisymmetric thin shell of finite elements. Shells undergoing snap-through buckling meet with significant geometric change of their physical configuration, i.e. enduring large deflections during their deformation process. Therefore snap-through buckling of shells basically is a nonlinear problem. Nonlinear numerical operations need to be applied in their analysis. The problem was solved by a scheme of incremental iterative procedures applying Newton-Raphson method in combination with the known line search as well as the arc- length methods. The effects of thickness and depth variation of the shell is taken care of by considering their geometrical parameter l . The results of this study reveal that spherical shell structures subjected to pressure loading experience snap-through instability for values of l ≥2.15. A form of ‘turn-back’ of the load-displacement curve took place at load levels prior to the achievement of the critical point. This phenomenon was observed for values of l =5.0 to l =7.0.","PeriodicalId":14209,"journal":{"name":"International Journal of Science and Engineering","volume":"8 1","pages":"54-59"},"PeriodicalIF":0.0,"publicationDate":"2015-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66730035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Codition of Coral Reef at Teluk Pandan Sub-District East Kutai District 东姑台区打鹿潘蓝街道的珊瑚礁状况

International Journal of Science and Engineering Pub Date : 2015-01-15 DOI: 10.12777/IJSE.8.1.60-64

R. MuhammadSyahrir, Achmad Jayadi, A. Adnan, Muhammad Yasser Mf, Tedy Hanjoko

引用次数: 5

The impact of the local dairy cattle farm toward the river water quality in Gunungpati Subdistrict Central Java 中爪哇Gunungpati街道当地奶牛养殖场对河流水质的影响

International Journal of Science and Engineering Pub Date : 2015-01-15 DOI: 10.12777/IJSE.8.1.15-21

E. Widiastuti, Kustono Kustono, A. Adiarto, Nurliyani Nurliyani

{"title":"The impact of the local dairy cattle farm toward the river water quality in Gunungpati Subdistrict Central Java","authors":"E. Widiastuti, Kustono Kustono, A. Adiarto, Nurliyani Nurliyani","doi":"10.12777/IJSE.8.1.15-21","DOIUrl":"https://doi.org/10.12777/IJSE.8.1.15-21","url":null,"abstract":"People’s awareness on the living environment nowadays is not yet comes up to the dairy-farmer community. In fact, the dairy-farm subsector contributes load pollution in the form of waste. The waste that is produced by a dairy-farm can be in the form of solid waste and liquid waste. There is still no cultivation effort toward the wastes in a traditional dairy-farmyet, thus most of the wastes are disposed to the closest river, so that in the surrounding dairy farm area is frequently found pollution toward the water quality. The aim of this study is to identify the effect of environment pollution that is caused by local dairy farm in Gunungpati Sub-district, especially toward the river water and residents’ well. The result of this study in Nangkasawit Village before and after the dairy farm was build was still under the quality standard for the third rate water quality. In Plalangan Village, the water quality was also under the quality standard, except for COD concentration. In the Sumurejo Village there was an upturn tendency on the observation value, but the water quality was under the quality standard, except for Fe concentration. Based on the Biodiversity Index before and after the dairy farm was established in Nangkasawit, Plalangan, and Sumurejo were 2.22, 1.49, 2.11, 1.90, 1.78, and 1.88, respectively. It means that Nangkasawit showed no pollution before the dairy farm was established, while there was a medium pollution after the dairy farm establishment. In Plalangan, the water was clear, but it was light polluted after the dairy farm was established. In Sumurejo, before and after the dairy farm establishment the water was light category pollution.","PeriodicalId":14209,"journal":{"name":"International Journal of Science and Engineering","volume":"8 1","pages":"15-21"},"PeriodicalIF":0.0,"publicationDate":"2015-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66730118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Potential of Glutathione Antioxidant in the Hippocampus Repair: Preliminary Study on Bioactive Materials Antiaging of Snakehead Fish (Channa striata) in Animal Models of Aging 谷胱甘肽抗氧化剂在海马修复中的潜力:黑头鱼抗衰老动物模型生物活性物质的初步研究

International Journal of Science and Engineering Pub Date : 2015-01-15 DOI: 10.12777/IJSE.8.1.22-25

S. Sunarno

{"title":"Potential of Glutathione Antioxidant in the Hippocampus Repair: Preliminary Study on Bioactive Materials Antiaging of Snakehead Fish (Channa striata) in Animal Models of Aging","authors":"S. Sunarno","doi":"10.12777/IJSE.8.1.22-25","DOIUrl":"https://doi.org/10.12777/IJSE.8.1.22-25","url":null,"abstract":"Snakehead fish meat contains active ingredients with anti-aging potential that serves as a precursor of glutathione. The ability of glutathione as an antiaging opportunities in the utilization of fish meat, especially snakehead fish. Snakehead fish meat contains several important amino acids, such as glutamine, cysteine, and glycine so the potential to be developed for the production of food that is nutritious and healthy. This study examines the essential amino acid composition of the antioxidant glutathione precursors found in snakehead fish from Rawa Pening Central Java to increase glutathione in the body and brain. The results showed that every 100g of snakehead fish meat from Rawa Pening containing glutamine (32.39%), cysteine (6.61%), and glycine (9.69%). Snakehead fish meat extract given at a dose of 30 ml/kg/day in both types of animal models of aging effect on the increase in the content of glutathione and glutathione precursors, both in blood and hippocampus. Increased glutathione precursor of the most high to low, respectively glutamine, glycine, and cysteine. Availability of essential amino acids can support increased glutathione in the brain. This is indicated by an increase in glutathione hippocampus in both animal models, both on chronological aging or aging due to oxidative stress, respectively (0.822 and 0.359) mol/g bb compared to control tissue .","PeriodicalId":14209,"journal":{"name":"International Journal of Science and Engineering","volume":"8 1","pages":"22-25"},"PeriodicalIF":0.0,"publicationDate":"2015-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66730126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Image ENCRYPTION on HDR IMAGES for OpenEXR Format OpenEXR格式的HDR图像加密

International Journal of Science and Engineering Pub Date : 2014-12-01 DOI: 10.6159/IJSE.2014.(4-4).04

Tzungher Chen, Sheng-Shiang Chang

引用次数: 1

Relative Position Dynamic Map for Driver Assistance Systems in Vehicular Networks 车辆网络中驾驶员辅助系统的相对位置动态地图

International Journal of Science and Engineering Pub Date : 2014-12-01 DOI: 10.6159/IJSE.2014.(4-4).01

Ming-Fong Tsai, Yin-Chih Lu, Pei-Chuan Tsai

引用次数: 0

Roll Your Own Web Database: An Innovative Approach for Providing Searchable Web Content 滚动你自己的网络数据库:提供可搜索网络内容的创新方法

International Journal of Science and Engineering Pub Date : 2014-12-01 DOI: 10.6159/IJSE.2014.(4-4).02

Chun-Hsiung Tseng, Yung-Hui Chen, Han-Ci Syu, C. Chuang, J. Wu, Yan-Ru Jiang

引用次数: 0

Design a Cross-layer Uplink Green Resource and Power Allocation Method over LTE-A Relay Network 基于LTE-A中继网络的跨层上行绿色资源与功率分配方法设计

International Journal of Science and Engineering Pub Date : 2014-12-01 DOI: 10.6159/IJSE.2014.(4-4).03

Chi-Wen Luo, Jen-Jee Chen, K. Lin, Jia-ming Liang

引用次数: 0