Journal of Applied Research and Technology最新文献_第10页

Model based on system dynamics for project portfolio management in industries 基于系统动力学的行业项目组合管理模型

Journal of Applied Research and Technology Pub Date : 2022-07-01 DOI: 10.22201/icat.24486736e.2022.20.3.1122

Carmelina Rosario Cadenas Anaya, Wilfredo Guaita, Carlos Rodriguez Monroy

引用次数: 0

Synthesis and characterization of Mo-blue-based sulfided CoMo catalysts for guaiacol HDO 愈创木酚HDO mo -蓝基硫化CoMo催化剂的合成与表征

Journal of Applied Research and Technology Pub Date : 2022-07-01 DOI: 10.22201/icat.24486736e.2022.20.3.1064

J. Escobar, A. Gutiérrez, P. del Ángel, M. Barrera, V. Santes, C. Santolalla, D. Solís-Casados

{"title":"Synthesis and characterization of Mo-blue-based sulfided CoMo catalysts for guaiacol HDO","authors":"J. Escobar, A. Gutiérrez, P. del Ángel, M. Barrera, V. Santes, C. Santolalla, D. Solís-Casados","doi":"10.22201/icat.24486736e.2022.20.3.1064","DOIUrl":"https://doi.org/10.22201/icat.24486736e.2022.20.3.1064","url":null,"abstract":"Saccharose (SA) and citric acid (CA) were used as additives in P-doped CoMo/Al2O3 catalysts (Mo, Co and P at 12, 3, and 1.6 wt%, respectively) intended to be applied in guaiacol hydrodeoxygenation (HDO). One-pot impregnating solutions were prepared by MoO3 digestion in aqueous H3PO4, followed by C4H6CoO4•4H2O addition. Organics were added (SA/Co=1, CA/Co=2) at two different preparation stages to assess the effect of that step on catalysts properties. Method I: SA or CA was added in as-prepared Co-Mo-P impregnating solution, followed by pore-filling impregnation of alumina support. Method II: SA or CA at aforementioned concentrations was impregnated on the pristine carrier, followed by drying (120 °C, 2 h). Co-Mo-P phases were further deposited on modified supports through corresponding one-pot solutions. All materials were dried (120 °C) but not calcined. Cobalt complexation by CA and Mo-blue LMCT complex formation (SA-modified solids) were identified (UV-vis, oxidic samples). Partially reduced molybdenum (Mo6+ => Mo5+, by XPS) was observed after either organics addition that effect being more evident in SA-modified solids. Materials were gas-phase sulphided (H2S/H2 10%, 400 °C, 2 h) then studied by HR-TEM. Co-Mo-P phases impregnation in one-pot solution simultaneously deposited with SA rendered the materials of the highest MoS2 dispersion.","PeriodicalId":15073,"journal":{"name":"Journal of Applied Research and Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48218421","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

Investigation of emission behaviour for tamarind seed powder-based firecracker 罗望子粉基爆竹排放物特性研究

Journal of Applied Research and Technology Pub Date : 2022-07-01 DOI: 10.22201/icat.24486736e.2022.20.3.1788

M. R., R. Shanmugavel

引用次数: 0

Development of a Community-scale Autonomous Water Purifier (AWP) Prototype to Remove Heavy Metals 社区规模自主净水器(AWP)原型机的开发，以去除重金属

Journal of Applied Research and Technology Pub Date : 2022-07-01 DOI: 10.22201/icat.24486736e.2022.20.3.1667

Dulce Kristal Becerra, J. Pantoja, A. Hernández, Guillermo R. Ibáñez, J. Moreira, Joseph Sebastian

{"title":"Development of a Community-scale Autonomous Water Purifier (AWP) Prototype to Remove Heavy Metals","authors":"Dulce Kristal Becerra, J. Pantoja, A. Hernández, Guillermo R. Ibáñez, J. Moreira, Joseph Sebastian","doi":"10.22201/icat.24486736e.2022.20.3.1667","DOIUrl":"https://doi.org/10.22201/icat.24486736e.2022.20.3.1667","url":null,"abstract":"In this paper, we present the design and evaluation of a prototype Autonomous Water Purifier (AWP) for removing heavy metals from contaminated water. The AWP prototype uses solar energy for its operation; the autonomous photovoltaic system is designed to operate up to 8 hours per day and to generate a water flow of 112 liters per day. The prototype was designed to remove biological and chemical agents. It was achieved the elimination of total coliforms, fecal coliforms, total alkalinity, total hardness, total solids, chloride and sulfate from 50 to 100%, as well as the removal of heavy metals. The Pb2+, Hg2+, Cd2+ and Cu2+ were eliminated from 80 to 99%. This wide range of contaminant removal shows a unique way to treat contaminated water in comparison to existing purification systems. The prototype was evaluated with river and spring water from different rural communities of Chiapas, Mexico. The results indicate that the prototype is able to completely remove contaminants in natural waters and get water that meets the guidelines that mark the Mexican official standards. This work helps to solve problems in marginalized communities and natural disaster areas where they have no access to clean water, electricity and suffer from waterborne diseases","PeriodicalId":15073,"journal":{"name":"Journal of Applied Research and Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42794724","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

Circularly Polarized UWB Antenna with Question Mark Shaped Patch for GPR Applications 用于探地雷达应用的带问号贴片的圆极化超宽带天线

Journal of Applied Research and Technology Pub Date : 2022-07-01 DOI: 10.22201/icat.24486736e.2022.20.3.1637

A. Chaabane, M. Guerroui

引用次数: 2

Investigations on diesel engine characteristics using waste biomass Pyrolysis oil: A study on the effect of compression ratio 利用废生物质热解油研究柴油机特性:压缩比影响的研究

Journal of Applied Research and Technology Pub Date : 2022-07-01 DOI: 10.22201/icat.24486736e.2022.20.3.1723

Joseph John MarshalS, S. Rajamohan, Kondru Gnanasundari, G. Kumar, Mary Goldena Sharon

引用次数: 0

Test model for database architectures: an assessment for job search engine systems 数据库架构的测试模型:对工作搜索引擎系统的评估

Journal of Applied Research and Technology Pub Date : 2022-07-01 DOI: 10.22201/icat.24486736e.2022.20.3.1169

M. Bernal, Yeimer Molina

{"title":"Test model for database architectures: an assessment for job search engine systems","authors":"M. Bernal, Yeimer Molina","doi":"10.22201/icat.24486736e.2022.20.3.1169","DOIUrl":"https://doi.org/10.22201/icat.24486736e.2022.20.3.1169","url":null,"abstract":"Data is a fundamental part of information and management systems; thus, controlling its complexity is an essential step nowadays. NoSQL databases adopt new approaches to data management differing from relational structures. For this study, two database systems are considered, MongoDB as a NoSQL data storage model and PostgreSQL as a relational data model, they are compared and evaluated on a job search system. For this purpose, a dataset was defined, and its representation was constructed in databases based on each technology. This process allowed the data modeling in terms of the best practices, then, the development of a test plan prepared the environment for the determination of the comparison metrics of both databases under the methodology specified by the International Software Testing Qualifications Board (ISTQB) and the types of database testing. This study determined that the SQL schema provides greater functionality, that ensures the support of transactions and data integrity, the opposite happened with the NoSQL schemas, resulting in more efficient but lacking functionalities that are characteristic and required for data representation of a consistent system.","PeriodicalId":15073,"journal":{"name":"Journal of Applied Research and Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43493358","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

An efficient and Highly Scalable Listless SPIHT Image Compression Framework 一种高效、可扩展的无列表SPIHT图像压缩框架

Journal of Applied Research and Technology Pub Date : 2022-05-02 DOI: 10.22201/icat.24486736e.2022.20.2.1269

Ali Kadhim Al-Janabi

{"title":"An efficient and Highly Scalable Listless SPIHT Image Compression Framework","authors":"Ali Kadhim Al-Janabi","doi":"10.22201/icat.24486736e.2022.20.2.1269","DOIUrl":"https://doi.org/10.22201/icat.24486736e.2022.20.2.1269","url":null,"abstract":"The set partitioning in hierarchical trees is a powerful image compression algorithm. It has reasonable complexity and produces a rate scalable bit-stream. Unfortunately, SPIHT fails to explore the multi-resolution nature of the wavelet transform as the output bit-stream doesn't support resolution scalability. Moreover it requires huge memory and has complex memory management as it depends on utilizing lists with memory of about 2.5 the image size. This paper proposes three related algorithms. The first one modifies SPIHT to reduce its complexity and improve its efficiency especially at low rates. The second is the main contribution of the paper. It provides a simultaneous solution to the memory and scalability problems of SPIHT. Memory is reduced by utilizing status bits of average 2.5 bits per pixel instead of the lists. Resolution scalability is maintained by encoding the resolution levels in increasing order within each coding pass. Another important attribute of our algorithm is that it has very little increment in complexity in comparison with the original SPIHT algorithm. In contrast, the existing solutions have much more complexity, and/or more memory resources. The third has slightly lower complexity and memory than the second but at the same time, it has slightly lower performance.","PeriodicalId":15073,"journal":{"name":"Journal of Applied Research and Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47343381","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

Investigating the feasibility of depositing AA6061-T6 alloy over mild steel by friction surfacing 低碳钢表面摩擦堆焊AA6061-T6合金的可行性研究

Journal of Applied Research and Technology Pub Date : 2022-05-02 DOI: 10.22201/icat.24486736e.2022.20.2.1735

Esraa S. Abdelall, Abdullah F Al Dwairi, Safa M. Aldarabseh, Shatha Al Rabaa

引用次数: 0

Advertisers use online reviews to design more effective advertisements 广告商利用在线评论设计更有效的广告

Journal of Applied Research and Technology Pub Date : 2022-05-02 DOI: 10.22201/icat.24486736e.2022.20.2.982

Rahat Ullah, Ghayur Ahmad, A. A. Adis, A. Zeb

引用次数: 0