International Journal of Applied Science and Engineering最新文献_第9页

Influence of organic binder and moisture content on the durability of rice husk and rice straw-based pellets 有机粘结剂和水分含量对稻壳和稻秆基球团耐久性的影响

International Journal of Applied Science and Engineering Pub Date : 2022-01-01 DOI: 10.6703/ijase.202212_19(4).002

M. F. Zulkornain, Nur Adilah Mohd Rawian, Hesam Neshaeimoghaddam, A. Shamsuddin, J. Saad, A. A. Rahman, S. Samsuri, F. H. Naning

{"title":"Influence of organic binder and moisture content on the durability of rice husk and rice straw-based pellets","authors":"M. F. Zulkornain, Nur Adilah Mohd Rawian, Hesam Neshaeimoghaddam, A. Shamsuddin, J. Saad, A. A. Rahman, S. Samsuri, F. H. Naning","doi":"10.6703/ijase.202212_19(4).002","DOIUrl":"https://doi.org/10.6703/ijase.202212_19(4).002","url":null,"abstract":"Biomass can partly replace or reduce coal consumption in power generation, hence reducing the agricultural waste disposal issues and environmental pollution generated by fossil fuel emissions. Pelletization is among the techniques for utilizing biomass and has the advantage of being low cost and easy handling. In this research, broken rice was used as an organic binder at 5%, 10% and 15% and three different moistures (14%, 17% and 20%) were applied for rice husk and rice straw-based pellet, and the evaluation of pellet durability has been conducted. The results show that the addition of broken rice as a pellet binder significantly improves biomass pellet durability. The highest durability of rice husk-based pellet achieved was 99.4% with the binder addition of only 10%. For rice straw-based pellet, the binder percentage is directly proportional to pellet durability up to 15% of binder addition. The result shows a similar trend for the effect of moisture on pellet durability. For rice husk-based pellet, the optimal moisture addition is 17%, while for rice straw-based pellet, the durability increased as the moisture increased with the highest durability of 98.9% at 20% moisture addition. Rice straw requires more binder and moisture to enhance the pellet durability because raw rice straw contains less natural lignin and cellulose content than rice husk.","PeriodicalId":13778,"journal":{"name":"International Journal of Applied Science and Engineering","volume":"99 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84821643","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: 0

Design and analysis of exhaust manifold for multi-cylinder diesel engine with monolith catalytic converter using CFD 基于CFD的整体催化转化器多缸柴油机排气歧管设计与分析

International Journal of Applied Science and Engineering Pub Date : 2022-01-01 DOI: 10.6703/ijase.202203_19(1).003

P. Thangapandian

引用次数: 1

Annual effective dose and radiological risk assessment from selected salt pans from the lagoon of Erongo region, Namibia. 纳米比亚埃隆戈地区泻湖选定盐田的年有效剂量和辐射风险评估。

International Journal of Applied Science and Engineering Pub Date : 2022-01-01 DOI: 10.6703/ijase.202112_19(1).009

Onjefu Sylvanus Ameh, Hamukotoh Tuwilika, C. Kamunda, Abah James, Hitila Markus, Jeya Kennedy

{"title":"Annual effective dose and radiological risk assessment from selected salt pans from the lagoon of Erongo region, Namibia.","authors":"Onjefu Sylvanus Ameh, Hamukotoh Tuwilika, C. Kamunda, Abah James, Hitila Markus, Jeya Kennedy","doi":"10.6703/ijase.202112_19(1).009","DOIUrl":"https://doi.org/10.6703/ijase.202112_19(1).009","url":null,"abstract":"Radioactivity levels in salt pans from the Erongo region of Namibia have been investigated. Ten composite salt samples, collected from salt pans of the Walvis Bay lagoon were analyzed for activity concentrations of 2226 Ra, 232 Th and 40 K. This was done using a high-resolution gamma-ray spectrometer. The average activity concentrations in (Bq.kg -1 ) of 226 Ra, 232 Th and 40 K were found to be 2.17 ± 0.19, 0.20 ± 0.02 and 2.28 ± 0.39, respectively. These activity concentrations were used to calculate the annual effective dose and radiological health risk from the ingestion of salt for the different age groups. The average annual effective dose in (μSv/yr) for the age ranges (2-7 years), (7-12 years), (12-17 years) and ≥ 17 years were found to be 2.67 ± 0.22, 3.33 ± 0.28, 6.08 ± 0.53 and 1.22 ± 0.10, respectively. All these were lower than the worldwide average of 0.29 mSv/yr as reported by UNSCEAR in 2000. The total average radiological risk (unitless x 10 -8 ) for the age ranges (2-7 years), (7-12 years), (12-17 years) and ≥ 17 years were found to be 30.15 ± 2.48, 60.30 ± 4.96, 89.8 ± 7.44 and 422.09 ± 34.75, respectively. All these were lower than the recommended limit of between 1x10 -6 to 1x10 -4 as reported by USEPA in 1991. Therefore, the results from this study indicated that the salt samples do not pose a radiological risk to members of the public.","PeriodicalId":13778,"journal":{"name":"International Journal of Applied Science and Engineering","volume":"50 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86144888","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: 0

Kinetic modeling for microwave-assisted green extraction: Effects of power on citronella oil from Cymbopogon nardus leaf 微波辅助绿色提取动力学建模:功率对香茅叶香茅油的影响

International Journal of Applied Science and Engineering Pub Date : 2022-01-01 DOI: 10.6703/ijase.202212_19(4).007

Haqqyana Haqqyana, A. Altway, M. Mahfud

{"title":"Kinetic modeling for microwave-assisted green extraction: Effects of power on citronella oil from Cymbopogon nardus leaf","authors":"Haqqyana Haqqyana, A. Altway, M. Mahfud","doi":"10.6703/ijase.202212_19(4).007","DOIUrl":"https://doi.org/10.6703/ijase.202212_19(4).007","url":null,"abstract":"C ymbopogon nardus , known as a native plant to the subtropical and tropical areas, is widely cultivated and utilized for food flavoring and pharmaceutical purposes. Microwave-assisted hydrodistillation (MHD) was preferred as a greener method to extract essential oils. Kinetics of essential oil extraction from Cymbopogon nardus leaves were observed under different values of microwave irradiation power at atmospheric pressure. This method facilitated a high yield of citronella oil (3.68%– 3.79%) at reduced time. Kinetic investigation of citronella oil extraction process was simulated using mathematic formulation such as pseudo-first and pseudo-second-order models. Results indicated that the studied models provided moderate fit for the experimental data, whereas the latter of the two kinetic models demonstrated better general fit, especially at low power levels. Moreover, GC-MS analysis of the citronella oil showed that the main compounds identified were geraniol and methyl isoeugenol. Other active compounds such as citronellal and β -citronellol were also present in considerable amount. These results suggested that the MHD method could be a prominent alternative to obtain essential oils in higher yields and deliver valuable chemical constituents upon shorter extraction time, compared to its conventional alternatives.","PeriodicalId":13778,"journal":{"name":"International Journal of Applied Science and Engineering","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75105872","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: 2

Conversion of auxiliary wastes for production of masonry bricks: towards conservation of natural clay 砖石砖生产辅助废弃物的转化:保护天然粘土

International Journal of Applied Science and Engineering Pub Date : 2022-01-01 DOI: 10.6703/ijase.202206_19(2).008

Aneke Frank Ikechukwu, A. Naghizadeh

引用次数: 2

Exploration of Ti6Al4V surface grinding under dry and MQL environments 干燥和MQL环境下Ti6Al4V表面磨削的探索

International Journal of Applied Science and Engineering Pub Date : 2022-01-01 DOI: 10.6703/ijase.202206_19(2).003

Dharam Pal Kashyap, Sachit Vardhan, M. Dogra, Rupinder Singh

引用次数: 0

Vernonia amygdalina extract induces apoptosis and inhibits epithelial-mesenchymal transition in Hep 3B cells through the inhibition of PI3k/Akt signaling pathway 苦杏仁提取物通过抑制PI3k/Akt信号通路诱导Hep 3B细胞凋亡，抑制上皮-间质转化

International Journal of Applied Science and Engineering Pub Date : 2022-01-01 DOI: 10.6703/ijase.202203_19(1).002

Chenxi Lai, Xinran Zhou, Hao Wang, Ying Lin, Hui-Yi Lin, Tzong-Der Way, Bingzhen Liu

引用次数: 1

Using non-dominated sorting genetic algorithm-ii for charging station deployment in wireless rechargeable sensor networks 基于非支配排序遗传算法的无线可充电传感器网络充电站部署

International Journal of Applied Science and Engineering Pub Date : 2022-01-01 DOI: 10.6703/ijase.202206_19(2).002

Shian Hu, Y. Tsai, S. Kao, Fu-Min Chang

引用次数: 0

Effect of particle size and weight percentage variation on the mechanical properties of periwinkle shell reinforced polymer (epoxy resin) matrix composite 粒径和重量百分比变化对长春花壳增强聚合物(环氧树脂)基复合材料力学性能的影响

International Journal of Applied Science and Engineering Pub Date : 2022-01-01 DOI: 10.6703/ijase.202209_19(3).004

M. Udo, S. Afolalu, Omolayo M. Ikumapayi, P. Babalola, V. Obasa, Oluseyum Akpalikpo

{"title":"Effect of particle size and weight percentage variation on the mechanical properties of periwinkle shell reinforced polymer (epoxy resin) matrix composite","authors":"M. Udo, S. Afolalu, Omolayo M. Ikumapayi, P. Babalola, V. Obasa, Oluseyum Akpalikpo","doi":"10.6703/ijase.202209_19(3).004","DOIUrl":"https://doi.org/10.6703/ijase.202209_19(3).004","url":null,"abstract":"Polymers are very interesting and useful materials that have many applications in various areas of engineering. Composites formed with these materials are known to exhibit outstanding mechanical, electrical, and thermal properties. In this work, a polymer, epoxy resin, was reinforced with a biodegradable material, periwinkle shell (PWS) particles, using the hand lay-up method. The PWS was pulverized using a ball mill and three sieve sizes of the PWS (75, 150, and 300 µm) were sieved out. Various samples of the composite were produced by reinforcing the epoxy resin matrix with 10, 20, 30, 40, and 50 wt% of each of the PWS particle sieve sizes. The samples so formed were subjected to the following mechanical tests: hardness, tensile, compressive, and impact tests. It was found out that the samples of composites showed higher values of the parameters tested for than ordinary epoxy resin showed. In the samples of composites, it was found that the samples with a higher weight percentage of the PWS reinforcement recorded higher values of those mechanical properties tested for. The higher the weight percentage of the PWS in the composite, the greater the value of the mechanical property tested for.","PeriodicalId":13778,"journal":{"name":"International Journal of Applied Science and Engineering","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89431685","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: 0

Cannabidiol (CBD) for relief from pain, anxiety, and epilepsy: A review 大麻二酚(CBD)用于缓解疼痛、焦虑和癫痫:综述

International Journal of Applied Science and Engineering Pub Date : 2022-01-01 DOI: 10.6703/ijase.202212_19(4).006

Nadire Özenver, D. Agrawal

引用次数: 0