检索结果-内蒙古大学图书馆

Optimal location of rail-road freight hubs: A case study

AIP Conference Proceedings 2019年第1期2097卷

作者： Virda Hersy Lutviana Saputri Yuniaristanto Wahyudi Sutopo Muh. Hisjam 1Master Program of Industrial Engineering Faculty of Engineering Universitas Sebelas Maret Surakarta Jl. Ir. Sutami No. 36 A Kentingan Surakarta 57126 Indonesia 2Department of Industrial Engineering Faculty of Engineering Universitas Sebelas Maret Surakarta Jl. Ir. Sutami No. 36 A Kentingan Surakarta 57126 Indonesia

Hub facility location in this study is related with driving the traffic from origin to destination of the cargo express by finding optimal hub facilities and allocating demand node to hubs. The objective of this research is to determine the locations of hubs to allocate non-hub nodes to hubs with minimizing total cost. Total cost includes transportation costs from origin to destination, fixed costs for new hub investments, and carbon emission costs resulting from transportation activities among facilities. An approach to the capacitated multiple allocation hub location problem is presented and an integer linear programming model is developed to find the solution of this problem. This study also calculated the carbon emission level to consider environmental effects as an integration method in sustainable supply chain management applied to facility location problem. Computational analysis is conducted in order to observe the resulting hub networks. The final results of this research are the optimal locations for cargo express transfer terminals attached in a hub-and-spoke network. The results obtained PWS stations selected as hub facilities with the total required cost of IDR 758,650,360.103. The delivery of goods by train is done through the station route PWS, KT, YA, KTA, KYA, PWT, CN, BKS, JNG, and PSE.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Optimization of hybrid PVA/hFDM scaffold preparation

引用

AIP Conference Proceedings 2021年第1期2344卷

作者： Rizqa Inayati Muhammad Suhaeri Nuzli Fahdia Melinda Remelia Radiana Dhewayani Antarianto 1Master Program in Biomedical Science Faculty of Medicine Universitas Indonesia Jl. Salemba Raya No. 6 Central Jakarta DKI Jakarta 10430 Indonesia 2Rumah Sakit Universitas Indonesia Kampus Universitas Indonesia Depok West Java 16424 Indonesia 3Stem cell and Tissue Engineering Research Cluster Indonesian Medical Education and Research Institute (IMERI) Universitas Indonesia Salemba Raya Jakarta West Java 10430 Indonesia 4Doctoral Program in Biomedical Science Faculty of Medicine Universitas Indonesia Jl. Salemba Raya No. 6 Central Jakarta DKI Jakarta 10430 Indonesia 5Department of Basic Biomedicine Faculty of Medicine Universitas Kristen Indonesia Jl Mayjen Sutoyo No 2 DKI Jakarta 13630 Indonesia 6Department of Histology Faculty of Medicine Universitas Indonesia Jl. Salemba Raya No. 6 Central Jakarta DKI Jakarta 10430 Indonesia

Osteogenic differentiation from Mesenchymal Stem Cell (MSC) to osteoblast has a clinical significance which is very important for treating bone injuries, in the form of femoral fractures with the most cases in Indonesia. Various studies have been conducted to find the best scaffold that can improve osteogenic differentiation, one of which is the development of a hybrid scaffold made from natural biomaterials in the form of the extracellular matrix, and from synthetic biomaterials. The discovery of the best scaffold is not only focused on the source of the scaffold but also requires optimization of the method in making the scaffold. Therefore, the aim of this study is to find out the optimum method for making hybrid scaffolds that support osteogenic differentiation from MSC. Materials and methods: human Fibroblast-derived Matrix (hFDM) as a hybrid scaffold material collected from decellularized fibroblasts cultures from post-cleft-surgery reconstruction palatal skin. Fibroblast cell cultures were divided into two groups of cultures, cultures without Platelet Rich Plasma (PRP), and cultures with the addition of PRP. For decellularization, we performed optimization at the preparation stage of the decellularization solution, and the time of culture for decellularization. In the preparation of the decellularization solution, we divided it into two groups, NH4OH as material from the decellularization solution was diluted with PBS before mixing with 0.25% Triton X-100, and NH4OH was diluted directly in 0.25% Triton X-100. In optimizing the culture time for decellularization, we divided it into three groups, decellularization on the day when cell growth reached 100% confluent, decellularization on the 3rd day after 100% confluent (H + 3) cells, and decellularization on the 4th day after 100% confluent (H + 4) cells. Next, the hFDM matrix is collected and added Polyvinyl Alcohol (PVA) solutions to form a hybrid PVA / hFDM scaffold in the form of a hydrogel. Observations on h

关键词：

来源：评论

学校读者我要写书评

暂无评论

Can we adapt to tidal flooding?

引用

AIP Conference Proceedings 2019年第1期2114卷

作者： Raden Rara Maria Immaculata Retno Susilorini Desiana Vidayanti Helmia Adita Fitra Budi Santosa 1Master Program of Urban and Environmental Studies Universitas Katolik Soegijapranata Semarang Central Java Indonesia 2Department of Civil Engineering Universitas Mercu Buana Jakarta Indonesia 3Department of Urban and Regional Planning Institut Teknologi Sumatera Lampung Indonesia 4Department of Civil Engineering Universitas Katolik Soegijapranata Semarang Central Java Indonesia

Tidal flooding has been a menace to the northern coastal area of Java, especially in Semarang City and Demak Regency. It happens continuously and the severity is worsened day by day. It becomes hazard for rural and urban areas hence mitigation efforts associated with coastal regions are required. Based on the situation, the present research wants to examine the need and the importance of adaptation strategy in flood prone areas. Several findings were reported and then recommended to the stakeholders to be implemented in policies and programs. The present research was conducted by using descriptive-qualitative method and purposive data sampling. The study area involved Panggung Lor in Semarang City and Sayung in Demak Regency. Analysis was carried out and conclusions were reported based on the findings. In overall, it can be concluded that these areas can adapt to tidal flooding.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Employing Galerkin method and field study for model calibration to perform sediment transport modelling in Agathis Lake, Universitas Indonesia

引用

AIP Conference Proceedings 2018年第1期2014卷

作者： Rian Mantasa Salve Prastica 1Master Student Graduate Program of Civil Engineering Department Universitas Indonesia Kampus UI Depok West Java Post code 16424 Indonesia

The increasing of urban development and the decreasing of public awareness to environment promote flood every year for urban cities. Several lakes or ponds are sacrificed due to both urban development and landfilling. Bad habit of society to throw garbage to the lakes affects the society to think that the economic value of lakes could be increased by filling them with the land. These lead to make the lakes become vulnerable to sedimentation from urban activities. Universitas Indonesia as educational institution starts to develop how to manage sedimentation by hydrodynamics and sediment transport modelling. The research uses Resources Modelling Associates (RMA) program to run the model and Agathis Lake as the study area to perform the simulation. It is expected that the program output data could represent the field data, so the validation method should be conducted. The issue to validate the data would be problematic if simulation factors data could not accommodate real-world observed data. This study aims to employ Galerkin method to understand finite element method in Resources Modelling Associates program (RMA) in order to avoid black box when using it and to conduct a field study to perform calibration method of sediment transport modelling in the study area, Agathis Lake that is located in Universitas Indonesia.

关键词：

来源：评论

学校读者我要写书评

暂无评论

The design of microalgae (Chlorella sp.) photobioreactor as a façade bus shelter building in Indonesia

引用

AIP Conference Proceedings 2020年第1期2296卷

作者： Arbye S. Retno Fitri Arianti Yano Surya Pradana Eko Agus Suyono Mochamad Donny Koerniawan Lucia Tri Suwanti Ulfah Juniarti Siregar Arief Budiman 1Master Program of System Engineering Universitas Gadjah Mada Jl. Teknika Utara Yogyakarta 55281 Indonesia 2Chemical Engineering Department Universitas Gadjah Mada Jl. Grafika 2 Yogyakarta 55281 Indonesia 3Faculty of Biology Universitas Gadjah Mada Jl. Teknika Selatan Yogyakarta 55281 Indonesia 4Department of Architecture School of Architecture Planning and Policy Development Institut Teknologi Bandung Jl. Ganesha No. 10 Bandung 40132 West Java Indonesia 5Department of Veterinary Parasitology Faculty of Veterinary Medicine Universitas Airlangga. Jl. Mulyorejo Kampus C Unair Surabaya 60115 East Java Indonesia 6Department of Silviculture Faculty of Forestry Institut Pertanian Bogor. Jl. Lingkar Akademik Dramaga Bogor 16680 West Java Indonesia

The purpose of microalgae cultivation generally divided into several categories, such as a resource of renewable energy, superfood, feed, pharmaceutical, CO2 sequestration, and O2 production. Recent research about microalgae cultivation on photobioreactors has the potential to be integrated into the building as a façade. The first building integrated with microalgae façade photobioreactor already applied in BIQ House Germany. However, research on the microalgae façade photobioreactors in Indonesia is still limited. This research design and apply a microalgae photobioreactor façade with an online monitoring system for the temperature and light intensity parameters on the bus shelter building in Indonesia on a prototype scale. The dimension of the prototype is 80 cm x 25 cm x 40 cm, with a total cultivation capacity is 10 litres. The material of the microalgae façade photobioreactor is a 3 mm glass and mounted on aluminium and wood frame. The results of this study showed the microalgae façade photobioreactor had an excellent performance from the growth rate of microalgae cells (Chlorella sp.) viewpoint and its function in decreasing the room temperature at the bus shelter.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Hydro-char production from press-mud wastes of the sugarcane industry by hydrothermal treatment with natural zeolite addition

引用

AIP Conference Proceedings 2018年第1期2026卷

作者： Asroful Abidin Chandra Wahyu Purnomo Rochim Bakti Cahyono 1Master Program of System Engineering Universitas Gadjah Mada Yogyakarta Indonesia 2Chemical Engineering Department Universitas Gadjah Mada Yogyakarta Indonesia 3Agrotechnology Innovation Center PIAT-UGM Sleman Yogyakarta Indonesia

Hydrothermal treatment (HT) is a biomass conversion by thermal process that using water as solvent and reactant. This technology is superior in treating biomass with a high water content into char and liquid product. This research aims to observe the zeolite incorporation in HT as an additive material to increase the acidity for hydrolysis enhancement. The effects of temperature and zeolite addition on biochar of press-mud biomass characteristic has been observed. The temperature variation were 180, 200, and 220°C with a water-biomass ratio of 1:5 and residence time of sixty minutes. Zeolite was added as much as 20% of the sample weight. The HT char was characterized using proximate analysis, heating value, and FTIR. The solid product had a heating value from 1886.419 to 2047.559 cal/g. It is observed that temperature variation affect the caloric value, ash content, fix carbon, and energy densification, while zeolite addition increased solid yield, energy yield, and liquid product acidity.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Effects of chemical treatment on the structure and morphology of bacterial cellulose film

引用

AIP Conference Proceedings 2019年第1期2120卷

作者： Tito Arif Sutrisno Heru Suryanto Retno Wulandari M. Muhajir 1Master Student of Mechanical Engineering Program Graduate School Universitas Negeri Malang Jl. Semarang 5 Malang East Java Indonesia 2Centre of Advanced Materials for Renewable Energy Universitas Negeri Malang Jl. Semarang 5 Malang East Java Indonesia65140 3Mechanical Engineering Department Engineering Faculty Universitas Negeri Malang Jl. Semarang 5 Malang East Java Indonesia

Development of extraction process of Bacterial Cellulose (BC) using chemical treatment in order to be developed as reinforcement in the composite product to improve fiber compatibility of BC in polymer metric. This study aimed to know the effect of chemical treatment against the structure and morphology of BC film. The methods used to make a film from BC fiber obtained from pineapples’ peels waste. Pellicle was fermented for 14 days then washed by distilled water prior to treatment. Pellicle soaked in a chemical solution such as NaOH, H2O2, Bmimcl with each concentration of 2.5% for 2 hours then dried in the oven and the result was analyzed using SEM and XRD. The result showed that chemical treatment against BC decreased the intensity and crystallite size. On distilled water immersion (as control), the highest peak diffraction located in peak 22.63 °2θ with intensity of 292.31 counts, the crystallite size of 10.01 nm, after NaOH, H2O2 and BmimCl chemical treatment, the peak intensity decreased consecutively to 251.19 counts, 269.32 counts, and 241.49 counts as well as crystallite size decrease to 3.61 nm, 4.07 nm, and 5.11 nm, respectively. SEM observation showed that BC film treated using distilled water wasn’t damaged, while fiber and pellicle which treated using NaOH had a lot of damage.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Using the NASA task load index and heart rate to evaluate vocational student’s mental and physical workload

引用

AIP Conference Proceedings 2019年第1期2097卷

作者： Rieska Ernawati Bambang Suhardi Eko Pujiyanto 1Master Program of Industrial Engineering Faculty of Engineering Universitas Sebelas Maret Surakarta Jl. Ir. Sutami No. 36 A Kentingan Surakarta 57126 Indonesia 2Department of Industrial Engineering Faculty of Engineering Universitas Sebelas Maret Surakarta Jl. Ir. Sutami No. 36 A Kentingan Surakarta 57126 Indonesia 3Department of Industrial Engineering Faculty of Engineering Universitas Sebelas Maret Surakarta Jl. Ir. Sutami No. 36 A Kentingan Surakarta 57126 Indonesia

The Increase of universities quantity in Indonesia does not improve the quality. Vocational schools established to meet the needs of the industry. Evaluation of block lecture systems is needed to identify the mental workload and the physical workload felt by students. The research was conducted on 25 students of yarn making technique. The methods that used to measure mental workload is NASA-Tlx with 6 subscales. The physical workload is measured by the calculation of the pulse so the level of cardiovascular classification is known. The results of mental load measurement are only 4% of students who feel moderate mental workload level, while others have a high workload. Based on the identification of physical workload there are 20% of students who need improvement and the remaining 80% do not need improvement because it is not in the fatigue category. It can be said that it is necessary to evaluate the lecture system in terms of mental burden perceived by the students in order to produce competent graduates output according to the needs of today’s textile industry.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Design of an automatic production monitoring system on job shop manufacturing

引用

AIP Conference Proceedings 2018年第1期1931卷

作者： Hoedi Prasetyo Yohanes Sugiarto Cucuk Nur Rosyidi 1Master Study Program of Industrial Engineering Faculty of Engineering Universitas Sebelas Maret Surakarta 57126 Indonesia 2Mechatronics Department Politeknik ATMI Surakarta Surakarta 57145 Indonesia

Every production process requires monitoring system, so the desired efficiency and productivity can be monitored at any time. This system is also needed in the job shop type of manufacturing which is mainly influenced by the manufacturing lead time. Processing time is one of the factors that affect the manufacturing lead time. In a conventional company, the recording of processing time is done manually by the operator on a sheet of paper. This method is prone to errors. This paper aims to overcome this problem by creating a system which is able to record and monitor the processing time automatically. The solution is realized by utilizing electric current sensor, barcode, RFID, wireless network and windows-based application. An automatic monitoring device is attached to the production machine. It is equipped with a touch screen-LCD so that the operator can use it easily. Operator identity is recorded through RFID which is embedded in his ID card. The workpiece data are collected from the database by scanning the barcode listed on its monitoring sheet. A sensor is mounted on the machine to measure the actual machining time. The system’s outputs are actual processing time and machine’s capacity information. This system is connected wirelessly to a workshop planning application belongs to the firm. Test results indicated that all functions of the system can run properly. This system successfully enables supervisors, PPIC or higher level management staffs to monitor the processing time quickly with a better accuracy.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Growth kinetic of Chlorella sp. microalgae at flate plate photobioreactor

引用

AIP Conference Proceedings 2020年第1期2296卷

作者： Retno Fitri Arianti Arbye S. Yano Surya Pradana Eko Agus Suyono Mochamad Donny Koerniawan Lucia Tri Suwanti Ulfah Juniarti Siregar Arief Budiman 1Master Program of System Engineering Universitas Gad}ah Mada Jl. Teknika Utara Yogyakarta 55281 Indonesia 2Chemical Engineering Department Universitas Gad}ah Mada Jl. Grafika 2 Yogyakarta 55281 Indonesia 3Faculty of Biology Universitas Gad}ah Mada Jl. Teknika Selatan Yogyakarta 55281 Indonesia 4Department of Architecture School of Architecture Planning and Policy Development Institut Teknologi Bandung Jl. Ganesha No. 10 Bandung 40132 West Java Indonesia 5Department of Veterinary Parasitology Faculty of Veterinary Medicine Universitas Airlangga. Jl. Mulyore}o Kampus C Unair Surabaya 60115 East Java Indonesia 6Department of Silviculture Faculty of Forestry Institut Pertanian Bogor. Jl. Lingkar Akademik Dramaga Bogor 16680 West Java Indonesia

Chlorella sp. microalgae are often cultivated for various purposes such as medicines, cosmetics, and alternative energy such as biodiesel, bio-crude oil. Different concentrations of nutrients in culture medium can give different effect on population growth and essential content of Chlorella sp. One of them is the concentration of nitrate and phosphate. In order to increase the biomass produced, it is necessary to enhance its growth with another medium that that are cheaper and easier. Urea and TSP was used as source of nitrogen and phosphate element in various ratio for the cultivation at flat plate photobioreactor. Among the process conditions tried, cultivation using urea and TSP fertilizer medium in ratio 2:1 (C1) was considered as the optimum composition that resulted in highest cell density, 4.28 × 107 cells/mL. Then, medium in ratio 4:1 (C2) which was 3.10 × 107 cells/mL and the lowest cell density found in ratio medium 6:1 (C3) which was 1.65 × 107 cells/mL. Medium with low nitrogen content had the highest cell density. The temperature culture during cultivation was in the range of 25 - 26 oC and pH value was in the range of 8.3 - 87. Temperature and pH culture during cultivation are still in optimal conditions for the growth of Chlorella sp.

关键词：

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：