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Food Chemistry Advances 2025年 7卷

作者： Elsa Nopiyanti Mega Safithri Trivadila Sahidin Harlinda Kuspradini Femi Earnestly Yoko Hirata Hiroshi Takemori Irmanida Batubara Department of Chemistry Chemistry Post-graduate Program Bogor Agricultural University Bogor West Java Indonesia Department of Biochemistry Chemistry Post-graduate Program Bogor Agricultural University Bogor West Java Indonesia Department of Pharmacy Faculty of Pharmacy Universitas Halu Oleo Kendari Indonesia Faculty of Forestry Universitas Mulawarman Samarinda East Kalimantan Indonesia Faculty of Pharmacy Muhammadiyah University of Sumatera Barat Padang West Sumatera Indonesia Life Science Research Center Institute for Advanced Study Gifu University Gifu Japan Department of Chemistry and Biomolecular Science Faculty of Engineering Gifu University Gifu Japan Tropical Biopharmaca Research Center IPB University Bogor West Java Indonesia

Parkia speciosa seeds, a widely consumed plant in Southeast Asia, are known for their rich bioactive compounds with potential health benefits. This study investigates the antioxidant properties of ethanol extracts from P. speciosa leaves (PSL) and seeds (PSS) to combat oxidative stress. Antioxidant activity was evaluated using 2,2-diphenyl-1-picrylhydrazyl (DPPH) and ferric reducing antioxidant power (FRAP) assays, revealing that PSL exhibited higher antioxidant potential than PSS, with values of 14.34 ± 0.02 and 19.39 ± 0.04 μg ascorbic acid equivalent (AAE)/g extract, respectively. The ethanol extracts of PSL and PSS significantly protected HT22 cells from erastin-induced ferroptotic cell death and activated the antioxidant response element (ARE) pathway, enhancing endogenous antioxidant defense mechanisms. Furthermore, in silico molecular docking analysis identified 7,7′-Dihydroxy-5′‑methoxy-2′,2′-dimethyl-4-oxo-3′,4′-dihydro-2′H,4H-3,6′-bichromen-5-yl hexopyranosiduronic acid as a promising bioactive compound with strong binding affinities to oxidative stress-related receptors (5i6x, 6cm4, 2f8a, 8bxn, and 8ivr). These findings suggest that P. speciosa ethanol extract, particularly from its leaves, exhibits strong antioxidant and neuroprotective properties, supporting its potential application as a natural therapeutic agent for oxidative stress-related disorders.

关键词： 7,7′-Dihydroxy-5′-methoxy-2′ 2′-dimethyl-4-oxo-3′ 4′-dihydro-2′H 4H-3 6′-bichromen-5-yl hexopyranosiduronic acid antioxidant response element HT22 cells Ferroptosis, P. speciosa

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The Behavior of Recycled Concrete through the Application of an Isotropic Damage Model

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Open Journal of civil engineering 2015年第3期5卷 339-351页

作者： Marcelo Pedreira da Silva Magno Teixeira Mota Anderson de Souza Matos Gadea Monica Batista Leite Koji de Jesus Nagahama Civil and Environmental Engineering Post-Graduate Program State University of Feira de SantanaFeira de SantanaBrazil

The main goal of this paper is to describe the mechanical behavior of the CDW recycled concrete in compression, using an isotropic damage model adapted to the variation of the replacement rate of natural aggregates by recycled ones. The isotropic model by Mazars was used as a constitutive equation for the CDW concrete and its adjustment parameters, A and B, were written as quadratic polynomials according to the aggregates replacement rate. The model was evaluated for conventional and recycled concretes. For the latter ones, the aggregates replacement ratios evaluated were 50% and 100%. The results show good approximation between the analytical and numerical values obtained with the adapted isotropic damage model and experimental concrete results for both compressive and flexural strength.

关键词： Recycled Concrete Construction and Demolition Waste Isotropic Damage Mazars Isotropic Model

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Pulmonary Disease Pattern Recognition on X-Ray Radiography Image Using Artificial Neural Network (ANN) Method 3

Pulmonary Disease Pattern Recognition on X-Ray Radiography I...

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3rd Annual Scientific Meeting on Medical Physics and Biophysics, PIT-FMB in conjunction with the 17th South-East Asia Congress of Medical Physics, SEACOMP 2019

作者： Fitriyah, N. Kurniawati, L.D. Purwanti, E. Astuti, S.D. Department of Physics Faculty of Science and Technology Universitas Airlangga Surabaya60115 Indonesia Biomedical Engineering Study Program Faculty of Science and Technology Universitas Airlangga Surabaya60115 Indonesia Department of Biomedical Engineering Post-Graduate Program Faculty of Science and Technology Universitas Airlangga Surabaya60115 Indonesia

This research aims to recognize the pattern of pulmonary disease on x-ray radiography image using artificial neural network (ANN) method. The images, which were used such as images of healthy pulmonary, pulmonary tuberculosis, and pulmonary tumour. Pattern recognition was using an extraction feature of GLCM (Gray Level Co-occurrence Matrix) and back propagation method. Before being identified, the images were processed by median filter and adaptive histogram equalization. The GLCM features that used were homogeneity, energy, contrast, variance and correlation. The parameters were learning rate and hidden layer. Learning rate was 0.3 and hidden layer was 25. Back propagation training showed 100% accuracy, which all of 44 images were used had been successfully identified. From the result, the healthy pulmonary showed 60% accuracy, 83.3% for pulmonary tuberculosis and 100% for pulmonary tumor. Hence, the overall result showed 81.25% accuracy, which 13 of 16 images had been successfully identified. From these result, extraction feature of GLCM using back propagation method was capable to recognize the pattern of pulmonary disease. However, due to narrow range of the feature, this application may not be used optimally for comparing features in every category of images. Therefore, the further research is needed to determine the best features and parameters of training back propagation. © Published under licence by IOP Publishing Ltd.

关键词： Pattern recognition

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Bioclimatic Architecture in Warm Climates 1

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1000年

作者： Manuel Correia Guedes Gustavo Cantuaria

ISBN: (数字)9783030120368

ISBN: (纸本)9783030120351;9783030120382

This book provides a comprehensive, hands-on approach to bioclimatic building design in Africa. Bioclimatic design is at the core of urban sustainability, and is a critical issue in Africa, where “imported” building typologies are being used at an increasing pace, disregarding the local context and consequently causing damage to the environment, to the economy, and to the culture itself. This book provides a concise set of sustainable design guidelines to be applied in both new buildings and the refurbishment of old buildings, and integrates bioclimatic design strategies with other sustainability issues such as: cultural aspects, affordability, and urban planning. Chapters are fully illustrated with photographs and drawings and include best-practice examples and strategies making it accessible to engineers, architects, students and a broad range of professionals in the building industry.

关键词： Renewable and Green Energy Building Construction and Design Building Physics, HVAC Sustainable Development

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Structural assessment of composite seam-welded rectangular hollow columns

Structural assessment of composite seam-welded rectangular h...

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作者： Castanheira, Deborah Souza De Lima, Luciano Rodrigues Ornelas Da Silva Vellasco, Pedro Colmar Gončalves Da Nóbrega Tavares, Maria Elizabeth PGECIV Civil Engineering Post Graduate Program UERJ State University of Rio de Janeiro Rio de Janeiro Brazil Structural Engineering Department UERJ State University of Rio de Janeiro Rio de Janeiro Brazil

Structural elements made of seam-welded hollow sections are considerably less expensive than their seamless equivalents. This is a strong incentive for their use, but the current steel design standards still contain recommendations for seam-welded hollow sections based on test results performed with sections produced using outdated steel grades and fabrication processes. These design procedures are even more conservative when applied to composite tubular seam-welded elements. This paper presents an experimental campaign performed to investigate the structural behaviour of steel- and concrete-filled composite columns made with seam-welded rectangular hollow profiles. The experiments involved columns with only steel sections, concrete-filled and concrete-filled plus additional reinforcing bars. The main aim of the tests was to identify the contribution of each component in the overall structural response. The results enable an evaluation of the design recommendations present in Eurocode 4 aiming to determine less conservative buckling curves to be used for the investigated composite columns made of seam-welded rectangular hollow sections.

关键词： Reinforced concrete

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Blockchain Modeling for Traceability Information System in Supply Chain of Coffee Agroindustry

Blockchain Modeling for Traceability Information System in S...

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International Conference on Advanced Computer Science and Information System (ICACSIS)

作者： I Gusti Made Teddy Pradana Taufik Djatna Irman Hermadi Graduate and Post Graduate Study Program in Agroindustrial Engineering IPB University Bogor Indonesia IPB University Bogor Indonesia

ISBN: (数字)9781728192796

ISBN: (纸本)9781728192802

The traceability system is increasingly becoming a concern in the current food supply chain. In line with shifting consumer trends, the issue of food security is becoming more important. One of the problems that occur in the supply chain is the risk of counterfeiting, such as bean-adulteration, along with the supply chain product. This risk cannot be anticipated effectively due to a lack of transparency in the flow of product information in the supply chain. This study aims to propose a task analysis of each stakeholder to achieve and construct a design of a traceability system for agroindustry-consumers information access from the field until the coffee shop. The methodology designs consisted of the use case diagram, actor relational analysis, features selection, and cosine similarity algorithm. As an ethereum based architecture, the model equipped with the design process initiated with the BPMN where BCT workflow modeling set. The data attributes construction was based on relational ERD, resulting in database table relation schemes. The construction of a smart contract was based on decision trees mechanism. The traceability of the final result has successfully demonstrated the prototype to fulfill the requirements.

关键词： Supply chains Stakeholders Prototypes Standards Blockchain Information systems Decision trees

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Comprehensive Geometric Modeling of the Sibayak Geothermal Field

Comprehensive Geometric Modeling of the Sibayak Geothermal F...

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2024 International Conference on Applied Sciences and Material Applications, ICASMA 2024

作者： Qarinur, M. Silitonga, E.M.R. Alvan, S. Ogata, S. Kinoshita, N. Yasuhara, H. Civil Engineering Study Program Universitas Negeri Medan Medan20221 Indonesia Construction Management Study Program Universitas Negeri Medan Medan20221 Indonesia Division of Global Architecture Graduate School of Engineering Osaka University Osaka565-0871 Japan Department of Civil and Environmental Engineering Ehime University Matsuyama790-8577 Japan Department of Urban Management Kyoto University Kyoto615-8540 Japan

Geothermal reservoirs are significant sources of renewable energy. Accurate geometric modeling of these reservoirs is essential for understanding the distribution of heat and fluid dynamics within them. This study aims to develop a geometric model of the Sibayak geothermal field using borehole data. Borehole data provide detailed geological information, which is crucial for constructing a realistic geometric model. The methodology of this research involves several key steps: the collection of borehole data from the Sibayak geothermal field, the construction of a 3D geometric model of the reservoir using COMSOL Multiphysics based on the borehole data, and the validation of the model through comparison with field data and previous research findings. The results indicate that the developed geometric model successfully identifies zones with high geothermal potential and provides an accurate depiction of the reservoir's boundaries and characteristics. Modeling the geometry of geothermal reservoirs using borehole data offers profound insights into the internal dynamics of the reservoir and can serve as a valuable tool for planning and optimizing geothermal energy exploitation. © 2024 Institute of Physics Publishing. All rights reserved.

关键词： Geothermal fields

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Effect of treatment of sisal fiber on morphology, mechanical properties and fiber-cement bond strength

Effect of treatment of sisal fiber on morphology, mechanical...

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作者： Santos, Rogério De Jesus Lima, Paulo Roberto Lopes Post-graduate Program of Civil and Environmental Engineering Department of Technology State University of Feira de Santana Av. Transnordestina S/N-Novo Horizonte Feira de Santana Bahia44036-900 Brazil

The dimensional instability of vegetable fibers due to hygroscopicity results in a gradual loss of adherence in cement based composites which, when in service, are submitted to a natural variation of humidity. Such an effect reduces the contribution of the fiber as a reinforcement and can cause the early rupture of the material. In this work, a treatment of the sisal fibers is performed with the applying of wetting-drying cycles in order to alter their crystalline structure and improve the dimensional stability of the fiber to withstand the variation of humidity: 6, 10, 20, 30 and 34 cycles were applied in order to evaluate the effect on the properties of fiber;a tensile test, the morphological characterization (MEV) and the evaluation of the chemical structure of fiber were carried out. The effect of the treatment on fiber-matrix behavior was evaluated using the pull-out test. Embedded lengths of 16, 20, 30, 40 and 44 mm were defined through a factorial design and used in the test. It is verified that the use of 10 wetting-drying cycles causes less damage to the tensile strength and the elastic modulus of the fiber and contributes to a better adherence with the matrix, with an increase of up to 23 % compared with the untreated fiber. The statistical analysis of the interaction effect between the studied factors, using 2K factorial design with central composite design, indicates that the number of cycles can be decreased when using a longer length of the embedded fiber. © (2015) Trans Tech Publications, Switzerland.

关键词： Tensile strength

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The role of traffic flow and the Floor Space Index (FSI) in predicting environmental noise 14

The role of traffic flow and the Floor Space Index (FSI) in ...

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14th International Conference on Computers in Urban Planning and Urban Management, CUPUM 2015

作者： Giunta, Mariene Benutti Suriano, Marcia Thais De Souza, Léa Cristina Lucas Viviani, Eliane Graduate Program in Urban Engineering Federal University of São Carlos São Carlos Brazil Post-Doctoral Program Federal University of São Carlos São Carlos Brazil Department of Civil Engineering Federal University of São Carlos São Carlos Brazil

ISBN: (纸本)9780692474341

Traffic flow and building parameters are analysed jointly to identify urban noise tendencies. For this purpose, the building parameter applied is the Floor Space Index (FSI). Acoustical and traffic flow data were collected and incorporated into a Geographical Information System (GIS). The fu-ture scenarios for this zone were created. For the FSI parameter, it was ver-ified that the higher the value of the average FSI, the higher the noise lev-els registered in urban canyons.

关键词： Floors

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A strategic way for promoting improved seismic resistant techniques to Indonesian builders

A strategic way for promoting improved seismic resistant tec...

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9th US National and 10th Canadian Conference on Earthquake engineering 2010, Including Papers from the 4th International Tsunami Symposium

作者： Wijanto, Sugeng Andriono, Takim Tjondro, Johannes Adhijoso P.T. Gistama Intisemesta Jakarta Indonesia Civil Engineering Department Trisakti University Jakarta Indonesia P.T. Gistama Intisemesta Surabaya Indonesia Post Graduate Program Petra Christian University Surabaya Indonesia Civil Engineering Department Parahyangan Catholic University Bandung Indonesia

ISBN: (纸本)9781617388446

Indonesia is located in a seismically prone area. During the Aceh 2004, Yogyakarta 2006, Padang 2009 earthquakes, many casualties were caused by the collapse of buildings. Due to lack of awareness, knowledge and skills, many of these buildings, particularly non-engineered houses, were rebuilt using non-seismic resistant techniques as used previously. In cooperation with the World Housing Encyclopedia (WHE), a strategic way for promoting improved seismic resistant construction to Indonesian builders has been implemented. Architectural and civil engineering students are involved. A special tutorial is conducted periodically by seismic engineering experts to enable these students to learn practical seismic resistant techniques for designing and constructing single to two storey dwellings as well as multi storey reinforced concrete buildings. During their studies they are assigned to promote these techniques to the community at large and to builders in particular. A student e-network is set up to enable them to exchange ideas and encourage each other. The first phase of this effort is reported in this paper.

关键词： Students

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