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73rd International Astronautical Congress, IAC 2022

作者： Sterba, Cole Singh, Hunter Aerospace Engineering Major California Polytechnic University San Luis Obispo United States Aerospace PhD Department University of Colorado Boulder United States

NASA's Artemis Campaign has unified industrial and international partners in laying the foundation for human exploration and industrialization of the solar system. Industry is designing systems and architectures to achieve the goal of returning humans to the Moon to stay and pushing onwards to Mars. A flexible and extensible solar system architecture enables this vision for both near term and long-term missions. The Commercial Low Earth Orbit (LEO) Destination (CLD), Habitation and Logistics Outpost (HALO) at the Moon and its successor at Mars, Lunar Surface Habitats (LSH), as well as Mars Transfer Habitats (MTH) will utilize an Operations and Service Infrastructure for Space (OASIS). OASIS capitalizes on refueling modules, transfer modules, as well as human and cargo landing systems (HLS) for the Moon and Mars. Additionally, this sustainable architecture concurrently augments US strategic customers by expanding Earth orbiting capabilities. The Cargo/Crew Autonomous Rendezvous and Velocity Adjustment/Navigation (CARAVAN) transfer module not only supports mission evolution from the Moon to Mars but enables increased mass to GEO and legranging destinations as well. A fully fueled CARAVAN leaves the OASIS refueling stations in LEO, NearRectilinear Halo Orbit (NRHO) or Mars high altitude orbit, completes rendezvous and docking maneuvers with the customer Payload and transfers the spacecraft to its operational destination. CARAVAN enables mission designs at least three times more massive while reducing system complexity by eliminating cruise and injection requirements and allowing the customer to focus on mission goals. The OASIS refueling network builds on demonstrated in space servicing capabilities. The refueling capability of OASIS extends to not only CARAVAN but industry orbital assets as well as other customer spacecraft requiring in space delivery. The Lunar HALO and planned Mars successors capitalize on this reusable architecture offering staging platforms for ca

关键词： Orbits

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Free water surface constructed wetlands: review of pollutant removal performance and modeling approaches

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Environmental Science and Pollution Research 2024年第32期31卷 44649-44668页

作者： Gaballah, Mohamed S. Yousefyani, Hooshyar Karami, Mohammadjavad Lammers, Roderick W. School of Engineering and Technology Central Michigan University Mount PleasantMI48859 United States National Institute of Oceanography and Fisheries Cairo Egypt Earth & amp Ecosystem Science PhD Program Central Michigan University Mount PleasantMI48859 United States Institute for Great Lakes Research Central Michigan University Mount PleasantMI48859 United States

Free water surface constructed wetlands (FWSCWs) for the treatment of various wastewater types have evolved significantly over the last few decades. With an increasing need and interest in FWSCWs applications worldwide due to their cost-effectiveness and other benefits, this paper reviews recent literature on FWSCWs' ability to remove different types of pollutants such as nutrients (i.e., TN, TP, NH4-N), heavy metals (i.e., Fe, Zn, and Ni), antibiotics (i.e., oxytetracycline, ciprofloxacin, doxycycline, sulfamethazine, and ofloxacin), and pesticides (i.e., Atrazine, S-Metolachlor, imidacloprid, lambda-cyhalothrin, diuron 3,4-dichloroanilin, Simazine, and Atrazine) that may co-exist in wetland inflow, and discusses approaches for simulating hydraulic and pollutant removal processes. A bibliometric analysis of recent literature reveals that China has the highest number of publications, followed by the USA. The collected data show that FWSCWs can remove an average of 61.6%, 67.8%, 54.7%, and 72.85% of inflowing nutrients, heavy metals, antibiotics, and pesticides, respectively. Optimizing each pollutant removal process requires specific design parameters. Removing heavy metal requires the lowest hydraulic retention time (HRT) (average of 4.78 days), removing pesticides requires the lowest water depth (average of 0.34 m), and nutrient removal requires the largest system size. Vegetation, especially Typha spp. and Phragmites spp., play an important role in FWSCWs' system performance, making significant contributions to the removal process. Various modeling approaches (i.e., black-box and process-based) were comprehensively reviewed, revealing the need for including the internal process mechanisms related to the biological processes along with plants spp., that supported by a further research with field study validations. This work presents a state-of-the-art, systematic, and comparative discussion on the efficiency of FWSCWs in removing different pollutants, main design

关键词： Wetlands

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Universal nanocomposite coating with antifouling and redox capabilities for electrochemical affinity biosensing in complex biological fluids

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Nanoscale Horizons 2024年第5期9卷 843-852页

作者： Bharti, Aditya Manu Rakesh Kumar, R.K. Chuang, Cheng-Hsin Shaikh, Muhammad Omar International PhD Program for Science National Sun Yat-sen University Kaohsiung80424 Taiwan Institute of Medical Science and Technology National Sun Yat-sen University Kaohsiung80424 Taiwan Department of Chemical Engineering National Taiwan University Taipei City10617 Taiwan Institute of Biomedical Engineering and Nanomedicine National Healthcare Research Institutes Miaoli County350 Taiwan National Sun Yat-sen University Kaohsiung80424 Taiwan Sustainability Science and Management Program Tunghai University Taichung407224 Taiwan

Electrochemical affinity biosensors have the potential to facilitate the development of multiplexed point-of-care diagnostics in complex biological fluids. However, their commercial viability has been hindered by challenges such as electrode biofouling and the lack of inherent redox properties. To address this unmet need, we have developed a universal nanocomposite coating which is unique in its ability to not only allow oriented conjugation of the biorecognition element but also specific detection directly in complex biological fluids like serum and urine owing to its built-in antifouling and redox capabilities, thus improving suitability for point of care testing. This multifunctional coating comprises a 3D porous crosslinked bovine serum albumin matrix for oriented conjugation and antifouling properties with embedded graphene nanosheets modified with amino-ferrocene for enhanced conductivity and mediator-free biosensing. The coating showed minimal signal degradation despite prolonged exposure to 1% bovine serum albumin, artificial urine and untreated human serum for up to 30 days. To demonstrate its utility, we fabricated and tested proof-of-concept electrochemical immunosensors for bladder cancer protein biomarkers, specifically interleukin-8 (IL-8) and vascular endothelial growth factor (VEGF). The practical feasibility was highlighted by the excellent sensitivity and specificity observed for IL-8 and VEGF with a limit of detection of 41 pg mL−1 and 67 pg mL−1, respectively. Consequently, this universal nanocomposite-based electrochemical biosensing platform can be extended to the point of care testing of a broad spectrum of biomarkers present in complex biological fluids, thus enabling reliable and early diagnostics. © 2024 The Royal Society of Chemistry

关键词： Biomarkers

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Prediction of Weather Patterns Using Linear Angstrom Model

Prediction of Weather Patterns Using Linear Angstrom Model

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2022 Advances in Science and engineering Technology International Conferences, ASET 2022

作者： Aljaghoub, Haya Alashkar, Adnan Alami, Abdul Hai Tawalbeh, Muhammad University of Sharjah Department of Industrail Engineering and Engineering Management Sharjah United Arab Emirates American University of Sharjah Materials Science and Engineering PhD Program Sharjah United Arab Emirates University of Sharjah Department of Sustainable and Renewable Energy Engineering Sharjah United Arab Emirates

ISBN: (纸本)9781665418010

The paper investigates the correlation between solar irradiance and sunlit hours for the city of Sharjah, United Arab Emirates. This correlation is a strong function of the weather conditions, and is vital for the design and operation of solar energy systems. The Angstrom Model is a straightforward tool that establishes a linear relationship where the model parameters b and a (slope and y-intercept, respectively) are evaluated through plotting of experimental measurements. Wind speed and relative humidity are collected to interpret their effect on the quality of incident solar radiation. The model takes into consideration winter and summer months of the year 2021, hence it provides a complete weather pattern for the year. With continuous data logging, the model will be developed to predict the weather patterns of the city of Sharjah. © 2022 IEEE.

关键词： Solar energy

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Influence of Geogrid on the Flexural Behavior of Cracked Concrete Pavements

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Procedia Structural Integrity 2024年 64卷 1386-1393页

作者： Abbas S.A. Al-Hedad Muhammad N.S. Hadi PhD Lecturer Al-Furat Al-Awast Technical University Al-Najaf Iraq Professor School of CMEA Engineering University of Wollongong Wollongong NSW 2522 Australia

This paper investigates the influence of geogrid reinforcement on the flexural behavior of concrete pavements after the initiation of cracks up to failure. Two groups of notched concrete beam specimens with the dimensions of 150 mm × 150 mm × 550 mm were tested. The concrete specimens of the first group were tested under static loads. The concrete specimens of the second group were tested under cyclic loads. The geogrid was placed at a depth of 55 mm from the bottom of the concrete specimens. Test results illustrate that, when cracks are visible in the concrete specimens, the geogrid could maintain the flexural behavior of the concrete pavements within the acceptable service level. The geogrid significantly prolonged the fatigue life of the cracked concrete pavements reinforced with the geogrid. The geogrid increased the maximum cyclic loads of the concrete specimens reinforced with geogrid before eventually failing. The number of geogrid layers used as a flexural resisting material under cyclic loads acts a significant role in improving the behavior of the concrete pavements compared with the specimens reinforced with one layer of geogrid.

关键词： Geosynthetic material Geogrid Concrete pavements Cyclic loads Fatigue behavior

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On the Applicability of Microservice Architecture in Geodetic Company

On the Applicability of Microservice Architecture in Geodeti...

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International Scientific-Professional Conference on Information Technology (IT)

作者： Novica Trifković Ilija D. Antović PhD student on Faculty of Organizational Sciences University of Belgrade Serbia Software Engineering Department Faculty of Organizational Sciences University of Belgrade Serbia

ISBN: (数字)9798331517649

ISBN: (纸本)9798331517656

Geodesy provides essential geospatial and positioning data, but the vast amounts of raw data it generates require efficient processing, transformation, and interpretation for practical use. Traditional monolithic software architectures often struggle with scalability and adaptability in handling complex geospatial workflows. This research examines the applicability of microservice architecture for data processing in geodetic organizations. By exploring its benefits, this study contributes to the ongoing discourse on modern IT architectures in geodesy, offering insights into how microservices can enhance efficiency, scalability, and adaptability in geospatial data processing.

关键词： Software architecture Scalability Microservice architectures Computer architecture Geodesy Companies Data processing Geospatial analysis Information technology

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Cluster Analysis to Extract Municipal Road Recovery Features in the Tohoku Region Following the 2011 Tohoku Earthquake

IAENG International Journal of Computer Science

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IAENG International Journal of Computer Science 2022年第1期49卷 232-240页

作者： Wu, J. Endo, N. Saito, M. PhD candidate of Design and Media Technology Graduate School of Engineering Iwate University Morioka Iwate Japan Professor of Regional Innovation and Management Graduate School of Arts and Sciences Iwate University Morioka Iwate Japan Associate Professor of Design and Media Technology Graduate School of Engineering Iwate University Morioka Iwate Japan

The Tohoku Earthquake of March 11, 2011, and tsunami triggered by it caused severe damage throughout the northeastern coast of Japan. The transport network in the Tohoku region was severely damaged by this disaster. A huge earthquake and tsunami are predicted to occur in the Nankai Trough in the future. Furthermore, the three prefectures (Fukushima, Miyagi, and Iwate prefectures) on the Pacific side of the Tohoku region, are relatively similar to the three prefectures (Shizuoka, Aichi, and Mie prefectures) in the Tokai region in terms of the topographical environment. We think that the recovery of regional roads in the three prefectures affected by the Tohoku Earthquake can be studied to help promote the rapid recovery of the three prefectures in the Tokai region after a possible Nankai Trough earthquake in the future. In this study, we applied cluster analysis to examine the driving data in the Tohoku region to classify the road recovery condition among municipalities in the first six months after the disaster. For the cluster results, we examined them using an analysis of variance (ANOVA) and visualized insights into road recovery characteristics through a geographic information system (GIS). Furthermore, our analysis of objective data reflecting regional characteristics showed that the road recovery conditions are similar from the viewpoints of topography, the importance of the road, snow, population density, damage, and geographical location. © 2022. All Rights Reserved.

关键词： Telematics

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Experimental Testing of UV-C Light Sources Used Disinfection Mobile Robots

Experimental Testing of UV-C Light Sources Used Disinfection...

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International Conference on engineering of Modern Electric Systems (EMES)

作者： Daniel Melentie Anton Raul Cristian Milaş Teofil Ţicărat Vlad Ovidiu Mihalca Radu Cătălin Ţarcă Flaviu Ionuţ Birouaş PhD School of Engineering Sciences University of Oradea Romania Department of Mechatronics University of Oradea Romania

In this paper several types of UV-C neon lamps are tested for their germicidal effects, determining actual wavelength for select models, close to 250 nm. These neon lamps feature Mercury insertion in the tubes and no UV-C protection. To determine wavelengths, several models were purchased from different manufacturers and measured in an experimental setting. These neon lamps have different power ratings, but the wavelength parameters are similar, therefore these parameters were used as criteria for the selection. Applications considered are the germicidal effects on viruses, including SARS-CoV-2.

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Extended analysis using nist methodology of sensor data entropy

UPB Scientific Bulletin, Series C: Electrical Engineering an...

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UPB Scientific Bulletin, Series C: Electrical engineering and Computer Science 2021年第2期83卷 121-132页

作者： Răstoceanu, Florin Ciubotaru, Bogdan-Iulian Rădoi, Ionuț Marian, Constantin Viorel Military Equipment and Technology Research Agency & PhD student University POLITEHNICA of Bucharest Romania Department of Engineering in Foreign Languages University POLITEHNICA of Bucharest Romania

IoT security is an unresolved issue at this time, which is not easy to achieve due to the multitude of types of sensors used. As almost any security solution involves cryptography elements, which by default requires random numbers generators, we aimed to analyze the possibility to extract entropy from different sensors data. The method proposed in this paper minimizes the effects of the diversity of different devices used and optimizes the entropy level according to consumed energy. The proposed solution was validated using the NIST methodology, which involves 10 different estimators and a large dataset. © 2021, Politechnica University of Bucharest. All rights reserved.

关键词： Cryptography

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Space Division Multiplexing Optical Coherence Tomography for Wide-field Angiographic Imaging of the Human Retina

Space Division Multiplexing Optical Coherence Tomography for...

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2024 Frontiers in Optics, FiO 2024

作者： Adkins, Aaron J. Hao, Senyue Ren, Chao Song, Andrew Zhou, Chao Department of Biomedical Engineering Washington University in St. Louis St. LouisMO United States Imaging Science PhD Program Washington University in St. Louis St. LouisMO United States Department of Electrical and Systems Engineering Washington University in St. Louis St. LouisMO United States

We have constructed a parallelized 4-channel multi-beam optical coherence tomography system capable of achieving high speed and wide field of view angiographic imaging of the retina. © Optica Publishing Group 202... 详细信息

关键词： Optical coherence tomography

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