检索结果-内蒙古大学图书馆

Aerogel sensoric nanoparticles with controlled surface area and pore structure synthesized from bagasse ash

AIP Conference Proceedings 2024年第1期3077卷

作者： Nanik Astuti Rahman Masrurotul Ajiza Cindy Mutiara Septani Study Program of Chemical Engineering Faculty of Industrial Technology National Institute of Technology (ITN) Malang Malang Indonesia Department of Geodetic Engineering National Institute of Technology (ITN) Malang Malang Indonesia

Aerogel nanoparticles which originated from organic silica in bagasse ash are unique because the silanol groups present on the silica surface can be replaced with other functional groups according to the application. Another uniqueness of the aerogel nanoparticles is the large surface area and pore structure, thus making the aerogel suitable as a sensory material. The combination of the ability to adsorb and the addition of electromagnetic properties can make this material useful as a sensor. In this research, we focused on the optimization of the synthesis of aerogel-based sensors by doping nickel (Ni) nanoparticles to create a highly sensitive and selective sensor material. The synthesis of aerogel nanoparticles was carried out using ambient pressure and alkaline extraction under atmospheric conditions. The aerogel was doped by replacing the silanol group (Si-OH) with Ni. The synthesized Ni-doped aerogel possesses a combination of microporous, mesoporous, and macroporous structures which contributed to its high pore density, pore volume, and surface area. The Ni-doping provides an electromagnetic effect that enhanced the sensory properties on the surface of the aerogel. The findings suggest that the Ni-doped aerogel is a promising material for a sensor application.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Students' Competences in Practicums of Various Competencies in Machining engineering 1

Students' Competences in Practicums of Various Competencies ...

引用

1st International Conference on Vocational Education of Mechanical and Automotive Technology, ICOVEMAT 2018

作者： Ardhian Syah, Dhany Nuryanto, Apri Electrical Engineering Education Study Program Faculty of Engineering Yogyakarta State University Indonesia

This study aimed at investigating productive practicums of various competencies and the competences of Machining engineering department students of Muhammadiyah 1 Bantul Vocational High School. It is a descriptive study which employed both quantitative and qualitative research designs. The practicums of various competencies consisted of seven stages led by two teachers. Those stages are opening, presenting the introductory theory, demonstrating, conducting productive practicums of various competencies, evaluating, giving feedback, and closing. Based on the data analysis, the percentage of students' response is 70%, and it is categorized as good. The average score of the students' competences is 81.67, and it is also categorized as good. Finally, the percentage of students' activity aspect is 90%, and it is also categorized as very good. © Published under licence by IOP Publishing Ltd.

关键词： Students

来源：评论

学校读者我要写书评

暂无评论

Comparison heuristics method for solving two echelon vehicle routing problem

引用

AIP Conference Proceedings 2024年第1期3029卷

作者： Muhammad Khahfi Zuhanda Saib Suwilo Opim Salim Sitompul Mardiningsih Informatics Engineering Study Program Faculty Engineering Universitas Medan Area Medan Indonesia Department of Mathematics Universitas Sumatera Utara Medan Indonesia Faculty of Computer Science and Information Technology Universitas Sumatera Utara Medan Indonesia

Today, almost everyone has done online shopping activities. The presence of e-commerce makes it easier for humans to do shopping. E-commerce companies compete to provide the best service to the community. One of them is in the delivery within the city. In terms of city delivery, the 2E-VRP model has been discussed a lot lately in terms of consolidating shipments. This study aims to present the 2E-VRP mathematical model and work in two stages to find a solution. In this article, the author also compares solutions with several heuristic models including 2-opt, repetitive nearest neighbor, nearest neighbor, farthest insertion, cheapest insertion, arbitrary insertion, and nearest insertion. From the results of research conducted by the 2-opt method, farthest insertion, cheapest insertion, and nearest insertion, the total distance is the best, all three get the same distance, then followed by the nearest insertion, arbitrary insertion, and nearest insertion methods.

关键词：

来源：评论

学校读者我要写书评

暂无评论

study of spot welding tensile and shear strength comparison on aluminium and low carbon steel using filler

引用

AIP Conference Proceedings 2023年第1期2680卷

作者： Davin Hengsa M. Sobron Y. Lubis Rosehan Mechanical Engineering Study Program Faculty of Engineering Universitas Tarumanagara Jl. Letjen S.Parman No. 1 Jakarta 11440 Indonesia

Alumunium and low carbon steel are some of many materials that are commonly used in machining process. One of the reasons is that Stainless steel has a high resistance towards rust, followed by a maximum shear strength of approximately 124-290 MPa. On the other hand, low carbon steel has a higher shear strength of approximately 500 MPa. In this study, spot welding process on these dissimilar materials is using filler and then analyzed using linear regression analysis, by varying voltage towards the shear strength results based on the parameters used in this research. The research was carried out using an experimental method by processing secondary data. The secondary data was then reprocessed by linear regression analysis using IBM SPSS software, The use of filler in spot welding using Aluminium 6061 and Low Carbon Steel SS400 has a positive effect on the shear tensile strength, resulting in a shear tensile strength of 923MPa with a stress of 3.5 V and a pressing time of 5 seconds.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Textural Features for Blb Disease Damage Assessment in Paddy Fields Using Drone Data and Machine Learning: Enhancing Disease Detection Accuracy

SSRN

引用

SSRN 2024年

作者： Wijayanto, Arif Kurnia Prasetyo, Lilik Budi Hudjimartsu, Sahid Agustian Sigit, Gunardi Hongo, Chiharu Department of Forest Resource Conservation and Ecotourism Faculty of Forestry and Environment IPB University Bogor16680 Indonesia Ronpaku Fellow Tokyo102-0083 Japan Environmental Research Center IPB University Bogor16680 Indonesia Study Program of Information Technology Faculty of Science and Engineering Ibn Khaldun University Bogor16129 Indonesia Regional Office of Food Crops Service West Java Province Cianjur43283 Indonesia Chiba University Chiba263-8522 Japan

Detecting Bacterial Leaf Blight (BLB) in paddy fields is one of the essential issues in Indonesia to prevent losses in rice production. This study reports the effectiveness of textural analysis using drone-acquired data over paddy fields in West Java, evaluating the potential of integrating textural and thermal characteristics. We used drone data combined with machine learning techniques to distinguish different levels of BLB impact. The normalized difference texture index derived from Haralick textural features was used as a predictor. The findings revealed that incorporating textural features enhanced the disease detection accuracy significantly compared with the traditional approach based on spectral indices. The random forest algorithm, which merges texture and vegetation indices, achieved a classification accuracy of 0.984. The proposed method offers a robust, noninvasive solution for BLB disease detection, contributing substantially to safeguarding crop yields and mitigating global food security issues. © 2024, The Authors. All rights reserved.

关键词： Drones

来源：评论

学校读者我要写书评

暂无评论

Designing ergonomic non-medical mask using ergonomic function deployment (EFD) method (case study: engineering faculty student, Mulawarman University)

引用

AIP Conference Proceedings 2023年 080002页

作者： Aprilia Prahesti Lina Dianati Fathimahhayati Theresia Amelia Pawitra Industrial Engineering Program Study Faculty of Engineering Mulawarman University. Sambaliung Street North Samarinda Samarinda City East Kalimantan Indonesia 75242

Since the outbreak of Covid-19 ***, there has been 1.739.750 positive cases and 48.039 deaths. Wearing a facemask is one important aspect to prevent the spread of the Covid-19. WHO recommended three layered cloth masks to be worn at home or public place. Based on the initial observation, there were some discomfort felt by customers including headaches, difficulty in breathing and speaking, as well as excessive sweat production on the face that lead to acne, dermatitis, and redness. This discomfort made students not using facemask properly. This study aims to design ergonomic non-medical mask that is comfortable and protective for the customers. Ergonomics Function Deployment (EFD) was applied to redesign the current cloth mask. EFD is the development of QFD (Quality Function Development) by adding a new relationship of customer needs and ergonomics aspects of the product. 376 respondents were surveyed to gather data about satisfaction of currently used mask, customer's needs and their important priority. Data collection of EFD started with preliminary-sampling to identify customer need and customer's level of importance questionnaires distribution to 376 respondents to measure the importance of each attribute of product. EFD showed that most important customer's need of non-medical mask was could protect customers from COVID-19 droplets, had several layers, ergonomically fitted to the customer's face. Four alternatives concepts were generated to fulfill customer requirements, concept A, B, and C selected to be continued. By concept scoring, concept A and B were selected with 4.695 and 4,646. Concept A (it had head loop adjustable design with round stopper; its width and height were 196.4 and 140 mm, it used zipper to open and close mask with width and height of the opening were 67 mm and 77 mm, it had black cloth and elastic string). Concept B (it had ear loop adjustable design with stripped stopper, its width and height were 196.4 and 140 mm, it used zippe

关键词：

来源：评论

学校读者我要写书评

暂无评论

Fuzzy controller simulation for micro hydro generator load control using Simulink Matlab

引用

AIP Conference Proceedings 2023年第1期2601卷

作者： Abdul Hafid Adriani Adriani Rahmania Rahmania Electrical and Telecommunication Engineering Study Program Faculty of Engineering University of Muhammadiyah Makassar Jl. Sultan Alaudin no. 259 Makassar 90221 Indonesia

This paper presents the results of research on fuzzy controller simulation for load control of a 5 kW micro-hydro generator using Simulink Matlab. The model uses two input variables and one fuzzy output variable. The controller input variables are consumer power and TRIAC trigger angle while the output is the generator frequency prediction. Based on the simulation results of 41 samples of consumer power used in the simulation, it is found that there are only 4 powerpoints that cause the generator frequency to be outside the specified tolerance limit. Generally, the electric power system in Indonesia uses a frequency of 50 Hz, with a tolerance of±0.4 % or a frequency between 49.8 Hz-50.2 Hz. Overall, it can be said that the performance of the fuzzy controller for controlling the load of the 5 kW micro-hydro generator reviewed in this study has a fairly good performance.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Content design: E-learning module for study on cultural tourism information systems based on local wisdom 2

Content design: E-learning module for study on cultural tour...

引用

2nd International Conference on Vocational Education and Technology, IConVET 2019

作者： Pageh, I.M. Permana, A.A.J. Historical Education Faculty of Law and Social Sciences Ganesha University of Education Singaraja Indonesia Information Technology Department Informatics Management Study Program Faculty of Engineering and Vocational Ganesha University of Education Singaraja Indonesia

Facing the 4.0 industrial revolution, it is necessary to carry out reforms and innovations related to national education. Reforms and innovations in the implementation of components of the education system involve changes in curriculum, graduate competencies and assessments, teacher qualifications, funding, facilities and infrastructure, decentralization and educational autonomy. Bali as a world tourist destination must be maintained and passed on to the younger generation. The younger generation can use information technology to help promote Balinese culture. Bali has a lot of local wisdom that can be implemented in the tourism sector. Therefore to promote those local wisdoms, a module that can be accessed through e-learning is developed to help students develop a cultural tourism package based on local wisdom to be promoted online. The modules developed have been tested by content and media experts, which can be used independently by students. Modules can be accessed online at e-learning and they are ready to use instructions for students so they can work on assignments and projects independently. Modules containing this theory and practice are for making brochures, tour packages, videos, and websites, all of which are connected to promote tourism based on local Balinese wisdom. © 2020 IOP Publishing Ltd. All rights reserved.

关键词： Students

来源：评论

学校读者我要写书评

暂无评论

Review on cold-formed steel beam-column, apex and eaves, and truss joint

引用

AIP Conference Proceedings 2024年第1期3116卷

作者： R. M. Fadel Satria Albimanzura Anis Saggaff Mahmood Md Tahir Kiagus Muhammad Aminuddin Doctoral Student of Engineering Science Study Program Doctoral Faculty of Engineering Sriwijaya University Indralaya Indonesia Civil Engineering Faculty of Engineering Sriwijaya University Indralaya Indonesia Institute for Smart Infrastructure and Innovative Construction (ISIIC) Construction Research Centre (CRC) School of Civil Engineering University Teknologi Malaysia Johor Bahru Malaysia

Light steel framing using the Cold-Formed Steel (CFS) sections is one of the Industrialized Building Systems (IBS) highly recommended for our construction industry; it not only contributes to speeding up construction time and reducing material usage but also guarantees the quality of the building. A relentless study has been conducted to achieve the appropriate configuration to ensure CFS popularity by introducing different types of joints applicable in constructing lightweight steel framing. A review of the CFS joint is provided in this study. The CFS joint is focused on the beam-column joint, apex and eaves, and truss joint. The study is mapped to establish research trends on CFS joints. Some areas show limited study and need future research on the proposed joints’ structural behavior aspects.

关键词：

来源：评论

学校读者我要写书评

暂无评论

The nature of ultramafic rocks from Sulawesi, Indonesia and their suitability for CO2sequestration 3

The nature of ultramafic rocks from Sulawesi, Indonesia and ...

引用

3rd International conference of the Transdisciplinary Research on Environmental Problems in Southeast Asia, TREPSEA 2018

作者： Sufriadin Widodo, S. Thamrin, M. Maulana, A. Ito, A. Otake, T. Department of Mining Engineering Faculty of Engineering Hasanuddin University Jl. Poros Malino KM.6 Gowa South Sulawesi92171 Indonesia Department of Geological Engineering Faculty of Engineering Hasanuddin University Jl. Poros Malino KM.6 Gowa South Sulawesi92171 Indonesia Environmental Geology Laboratory Division of Sustainable Resources Graduate Study of Engineering Hokkaido University Sapporo060-8628 Japan

Petrological and geochemical characterization of some ultramafic rock samples from Sulawesi has been conducted with the aim at deciphering physico-chemical properties in relation to their potential use as carbon dioxide storage. Mineralogical analysis was performed by means of optical microscopy and whole rock chemical compositions of the samples were determined by X-ray fluorescence (XRF) spectrometry. Results of analyses show that lizardite is predominant serpentine mineral present, followed by chrysotile and trace amount of magnetite. Remnants of olivine and pyroxene were detected in some samples but they have been pseudomorphically replaced by serpentine. Serpentinization of Sulawesi ultramafic rocks has led to transformation of olivine and lesser pyroxene become secondary phases mainly lizardite and minor chrysotile. This process also has changed the properties of rocks such as reduction in grain size and decreasing in density. Relatively higher MgO concentration combined with fine grained and porous rocks indicate that some Sulawesi ultramafic rocks are good candidate as the host for mineral carbonation. Fosteritic olivine and serpentine (lizardite) are the most soluble Mg-rich minerals in acid. Carbonation may occurs where Mg2+ readily reacts with CO2 forming thermodynamicly stable magnesite (MgCO3). © Published under licence by IOP Publishing Ltd.

关键词： Serpentine

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：