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2025 SPE Conference at Oman Petroleum and Energy Show, OPES 2025

作者： Gao, Guangliang duan, Bin Zhang, Yang Yang, Zhibin Liu, Wei Zhang, Xianguo Qiu, Xiaosong Liu, Mancang Huang, Xingning State Key Laboratory of Deep Oil and Gas China University of Petroleum - East China Shandong Qingdao China PetroChina Jidong Oilfield Company Hebei Tangshan China Underground Gas Storage Research Center PetroChina Research Institute of Petroleum Exploration & Development Hebei Langfang China National Energy Underground Gas Storage R&D Center Hebei Langfang China CK Energy Technology Co. Ltd Chengdu China

ISBN: (纸本)9781959025740

In the Jidong region of the JS Basin, deep shale gas horizontal wells at depths over 3,500 meters have experienced casing deformation issues during staged fracturing operations. This problem has significantly constrained the development efficiency of deep shale gas in this area. A multi-factor analysis was conducted on typical deep shale gas horizontal wells in the Jidong block, further clarifying the main characteristics and causes of casing deformation. Physical simulation analysis of casing deformation during shale gas well fracturing revealed the mechanism behind the casing deformation, providing a theoretical basis for prediction and prevention. It was found that casing deformation in deep horizontal wells in the Jidong block is primarily influenced by geological and engineering factors. during fracturing, large volumes of fracturing fluid are injected into the formation, and after connecting with natural fractures, the formation exerts shear stress on the wellbore, leading to casing damage. The results show that in the presence of natural fractures, varying stress conditions can alter the direction of hydraulic fracture propagation. Under strike-slip fault stress conditions, hydraulic fractures are prone to deflection, causing shear deformation. The stress state and the inclination of natural fractures are the primary factors influencing the slip and movement of the fracture surfaces. Under strike-slip fault stress conditions, natural fractures are more likely to experience slip and shear, leading to casing deformation. The closer the natural fractures are to the Coulomb failure surface, the more likely they are to slip and displace, causing casing deformation. Further analysis of field wells confirmed the contributing factors to casing deformation, providing technical guidance and experience for the prediction and prevention of casing deformation. Copyright 2025, Society of Petroleum engineers.

关键词： Horizontal wells

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Smart Agriculture: Leveraging IoT and Machine Learning in Wireless Sensor Networks for Precision Farming

Smart Agriculture: Leveraging IoT and Machine Learning in Wi...

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Innovative Computing, Intelligent Communication and Smart Electrical Systems (ICSES), International Conference on

作者： M. Sahaya Sheela T. Thomas Leonid N. Aravindhraj ravi S Pallavi Giri Ayman Amer Department of ECE Vel Tech Rangarajan Dr.Sagunthala R&D Institute of Science and Technology Chennai India Department of CSE KCG College of Technology Chennai Department of CSE Kongu Engineering College Erode Department of VLSI Microelectronics Saveetha School of Engineering Saveetha Institute of Medical and Technical Sciences (SIMATS) Chennai Department of Civil Engineering Laxminarayan Innovation Technological University Nagpur Department of Energy Engineer Zarqa University Zarqa Jordan College of Engineering University of Business and Technology Jeddah Saudi Arabia

ISBN: (数字)9798331543624

ISBN: (纸本)9798331543631

This research explores the challenge of incorporating IoT with Machine Learning (ML) applications to Precision Agriculture, particularly the use of wireless sensors for irrigation control. Information from sensors that monitor key parameters including temperature, humidity, moisture, and water levels are used to forecast water requirements and control pumps. Support vector machine (SVM), decision tree (dT), random Forest (rF) and Naïve Bayes (NB) techniques are adopted for the analysis to find out their accuracy levels. It is observed from all the above-performed models that among all, the SVM has the maximum prediction rate of the given dataset and is slightly outperformed by only the dT and rF. The confusion matrix which points to the misclassification patterns of each model gives an insight into identifying the best ML approach for use. The convergence of IoT and ML guarantees flexibility and responsiveness when controlling and designing agricultural systems. It is this approach that has the potential to enhance water resources management as well as address issues precipitated by climate change and growing worldwide food demand.

关键词： Support vector machines radio frequency Temperature sensors Precision agriculture Smart agriculture Wireless sensor networks Irrigation Accuracy Internet of Things Water resources

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development of an Energetic System Model for Long-Tail Electric Boat combining Solar Panels and a Prototype of E-Engine

Development of an Energetic System Model for Long-Tail Elect...

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International Conference on Electrical Machines and Systems (ICEMS)

作者： d. Pham Hung V. Tran Tuan S. Kreuawan S. Udomkaew M. Phattanasak Q. Nguyen duc School of Electrical & Electronic Engineer. Hanoi University of Science and Technology Hanoi Vietnam R&D Department Real BPM Co. Ltd. Samutsakorn Thailand Faculty of Technical Education King Mongkut’s University of Technology Bangkok Thailand Department of Electrical Engineering Electric Power University Hanoi Vietnam

ISBN: (数字)9781665493024

ISBN: (纸本)9781665493031

This paper proposes the prototype of e-tail and the energetic system model for all electric long-tail boat equipping with solar panels. It offers many advantages over a traditional internal combustion engine (ICE) propulsion system, thanks to the combination of the electric powertrain and the solar panel. Besides low noise and zero-emission, characteristics of electric engine allow regenerative braking and starting the propeller in the water. The prototype of e-tail is presented. The energetic system model is built to sizing optimally the battery capacity depending on the consumption of the e-tail boat driven by the e-engine. The simulations results are performed on a testcase of Phong Nha cave tourism boat. With 5 solar panels and 4 kWh of battery capacity, the boat can operate independently without external power source at least 1 round-trip 4 days in a week in winter and maximum 2 trips per day every day in summer.

关键词： Water resistors Propellers Simulation Boats Prototypes Quality of service

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Mesoporous Collapsing Encapsulated Carbon dots: direct Evidence for the Effect of Multiple-Confined Interactions of Silica on Efficient Long-Lived Phosphorescence

SSRN

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SSrN 2024年

作者： Luo, Yimeng Jiang, Qin Liu, Jinkun Yang, Hongwei Liao, Xuelin Huang, Feiyan Zhuang, Jianle Hu, Chaofan Lei, Bingfu Liu, Yingliang He, Jiangling Key Laboratory for Biobased Materials and Energy of Ministry of Education Guangdong Provincial Engineering Technology Research Center for Optical Agriculture College of Materials and Energy South China Agricultural University Guangzhou510642 China National R&D Center for Se-rich Agricultural Products Processing Hubei Engineering Research Center for Deep Processing of Green Se-rich Agricultural Products School of Modern Industry for Selenium Science and Engineering Wuhan Polytechnic University Wuhan430023 China

Coupling with a matrix is the common strategy to improve the phosphorescence performance of carbon dots (Cds). However, there is a lack of clear and direct evidence about the formation mechanism of the inner relationship between Cds and matrix, and the specific effect of matrix on the phosphorescence performance. Mesoporous silica nanospheres (MSNs) were used as the research model to provide the direct evidence of the dense structure formation process and to construct a quantum chemical theoretical computational model of the effect of dense matrix on phosphorescence performance. due to the multiple domain-limiting effects of rigid Si-C covalent bonds and SiO2 dense structure, the calcined-carbonized polymer dots-mesoporous silica nanospheres (C-CPds-MSNs) can exhibit thermally activated delayed fluorescence (TAdF) by tuning the HOMO-LUMO gap and enriching the electrons in the surface region. With a long lifetime of 3.07 s, the composite can also maintain stable phosphorescence performance under harsh conditions and has been successfully applied in multilevel information encryption, fingerprint identification, and cellular imaging. This work provides the direct evidence for the process of dense SiO2 structure enhancing the phosphorescence performance of Cds and offers a general strategy and method for the design and preparation of efficient and practical Cds-based phosphorescent materials. © 2024, The Authors. All rights reserved.

关键词： Silica

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Multiple Confinement-Limited Activation and defect Effect Co-Triggered the Ultra-Long Lifetime of Carbon dots

SSRN

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SSrN 2024年

作者： Luo, Yimeng Jiang, Qin Liu, Jinkun Huang, Feiyan Liao, Xuelin Zhuang, Jianle Hu, Chaofan Zheng, Mingtao Lei, Bingfu He, Jiangling Liu, Yingliang Key Laboratory for Biobased Materials and Energy Ministry of Education Guangdong Provincial Engineering Technology Research Center for Optical Agriculture College of Materials and Energy South China Agricultural University Guangzhou510642 China National R&D Center for Se-rich Agricultural Products Processing Hubei Engineering Research Center for Deep Processing of Green Se-rich Agricultural Products School of Modern Industry for Selenium Science and Engineering Wuhan Polytechnic University Wuhan430023 China

The luminescence process of carbon dots (Cds) is typically influenced by spin-forbidden transition, triplet exciton quenching, and non-radiative transition. Thus, it faces great challenges to achieve efficient and ultra-long lifetime afterglow for Cds. The commonly employed strategy to obtain efficient afterglow performance of Cds is to encapsulate Cds into a rigid matrix to protect the afterglow signal from quenching. Generally, the ultra-long lifetime and excellent luminescent properties of inorganic rTP (room temperature phosphorescence) nanomaterials attribute to the slow release of electrons trapped in defect states of the surfaces. This capture-release mechanism has advanced afterglow lifetime of Cds towards longer levels via the design of defect states. Anchoring Cds onto a rigid matrix can preserve the rigid structure for the restrictive effect, and also can create structural defects. Herein, as-prepared rHCds@SiO2 composite can exhibit an ultra-long afterglow lifetime of 7.76 s, which is the highest value achieved for Cds in silica matrix to date. This composite is also successfully applied in anti-counterfeiting and cell imaging fields. The synergistic multiple confinement effect and defect effect from the composite provides a universal strategy to design and achieve the ultra-long afterglow lifetime of Cds. © 2024, The Authors. All rights reserved.

关键词： Chemical activation

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Towards Seamless Connectivity: Implementing 6G Communication Technologies In Next-Generation Networks

Towards Seamless Connectivity: Implementing 6G Communication...

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Advancement in technology (ICONAT), International Conference for

作者： K. Kalaiselvi r. Sankar S Supriya G Kaushik Hemanth Swamy M devika Department of Data Analytics Saveetha College of Liberal Arts and Sciences SIMATS Chennai Tamilnadu India Department of Electrical and Electronics Engineering Chennai Institute of Technology Chennai Tamil Nadu India Department of Computer Science and Engineering Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology Chennai Tamil Nadu India Department of Electronics and Communication Engineering MLR Institute of Technology Hyderabad India Senior Software Engineer Motorola Solutions Department of AI& DS Dhanalakshmi College of Engineering Chennai Tamil Nadu India

ISBN: (数字)9798350354171

ISBN: (纸本)9798350354188

Advanced wireless networks are essential given the increase in demand for smart services enabled by the Internet of Everything (IoE). despite the fact that 5G networks could enable Internet of Everything (IoE)-based services, they can’t meet all of the requirements needed to create intelligent applications. In order to overcome the shortcomings of the current infrastructure, there is an increasing demand to investigate the potential of 6G wireless communication technologies. Complex network optimization problems can be resolved by integrating artificial intelligence into sixth generation networks. An increasing user base and support for large-scale data-driven applications are essential given the fast evolving 6G landscape. In addition to highlighting network needs, critical supporting technologies, and a comparison of 5G and 6G networks, this study looks at recent advancements and trends in 6G technology. The report also explores new approaches to 6G connectivity, such as edge computing, backscatter communications, AI-driven IoT networks, and holographic beamforming, all of which are meant to support intelligent communities. In order to achieve the goal of 6Gbased IoT networks, it concludes by outlining potential research avenues.

关键词： 6G mobile communication 5G mobile communication Wireless networks Complex networks Market research Communications technology Internet of Things Optimization Next generation networking Edge computing

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Multiple Confinement-Limited Activation and defect Effect Co-Triggered the Ultra-Long Lifetime of Carbon dots

SSRN

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SSrN 2024年

关键词： Chemical activation

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Analysis of quality-related proteins in golden pompano(Trachinotus ovatus)fillets with modified atmosphere packaging under superchilling storage

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Food Science and Human Wellness 2024年第4期13卷 2253-2265页

作者： Chuang Pan Xiaofan Zhang Shengjun Chen Yong Xue Yanyan Wu Yueqi Wang di Wang South China Sea Fisheries Research Institute Chinese Academy of Fishery SciencesKey Laboratory of Aquatic Product ProcessingMinistry of Agriculture and Rural AffairsNational R&D Centre for Aquatic Product ProcessingGuangzhou 510300China Co-Innovation Center of Jiangsu Marine Bio-industry Technology Jiangsu Ocean UniversityLianyungang 222005China Collaborative Innovation Center of Seafood Deep Processing Dalian Polytechnic UniversityDalian 116034China Key Laboratory of Efficient Utilization and Processing of Marine Fishery Resources of Hainan Province Sanya Tropical Fisheries Research InstituteSanya 572018China College of Food Science and Engineering Ocean University of ChinaQingdao 266003China

Here,we aimed to study the changes in proteome of golden pompano fillets during post-mortem *** mass tags(TMT)-labeled quantitative proteomic strategy was applied to investigate the relationships between protein changes and quality characteristics of modified atmosphere packaging(MAP)fillets during superchilling(-3°C)*** electron microscopy was used to show that the muscle histology microstructure of fillets was damaged to varying degrees,and low-field nuclear magnetic resonance was used to find that the immobilized water and free water in the muscle of fillets changed *** sulfhydryl content,TCA-soluble peptides and Ca2+-ATPase activity also showed that the fillet protein had a deterioration by oxidation and *** Fresh(FS),MAP,and air packaging(AP)groups were *** of 150 proteins were identified as differential abundant proteins(dAPs)in MAP/FS,while 209 dAPs were in AP/FS *** KEGG pathway analysis indicated that most dAPs were involved in binding proteins and protein *** analysis found that 52 dAPs were correlated with quality *** them,8 highly correlated dAPs are expected to be used as potential quality markers for protein oxidation and water-holding *** results provide a further understanding of the muscle deterioration mechanism of packaging golden pompano fillets during superchilling.

关键词： Tandem mass tags(TMT)proteomics Trachinotus ovatus Modified atmosphere packaging Superchilling storage Low-field nuclear magnetic resonance Protein deterioration

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Power Conversion Efficiency Improvement of Photovoltaic Panels by Means of Thermal Analysis and Effective Cooling

SSRN

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SSrN 2022年

作者： Malik, Abdul Haleem Smend, Joshua Moursi, Mohamed El Chiesa, Matteo Xiao, Weidong El-Fouly, Tarek H.M. R&D Engineer DEWA Dubai United Arab Emirates Electrical Engineering and Computer Science Khalifa University of Science and Technology Abu Dhabi United Arab Emirates Khalifa University of Science and Technology Abu Dhabi United Arab Emirates Centre for Future Energy Networks School of Electrical and Information Engineering University of Sydney Australia

Insecure petroleum-based energy supplies and environmental calamitous have escalated the penetration of renewable Energy Sources(rES) in the primary energy supplies. The low Levelized cost of electricity(LCOE) of the Photovoltaic(PV) system places it on the top of the rES list. However, the energy efficiency of the PV system is still progressing. The power output of a photovoltaic module depends mainly on two parameters;temperature and irradiance. A rise in the temperature (above 25°C), is associated with the absorbed sunlight that is converted into heat resulting in the module output power decreasing, affecting the life span and energy efficiency of the panel, and in arid climates e.g. middle east, etc. where the operating temperatures of the panels can rise to as high as 70°C. which immensely affects the PV panel efficiency. So, it is imperative to have appropriate cooling schemes to improve efficiency, and *** paper presents an effective active-passive cooling strategy (with little water and paraffin wax) to improve the power conversion efficiency of photovoltaic modules and their overall performance. A detailed thermal analysis for both techniques (active & passive) has been presented, simulated, validated experimentally, and compared with the reference PV panel. The active scheme involves spraying a controlled thin film of water onto the front surface of the module using a combination of seawater and freshwater to keep the front surface clean and cool whereas the passive scheme involves paraffin wax as a phase change material (PCM) sealed at the back of the module to help reduce the module’s temperature further. The experimental platform is set up in parallel with simulation built by Comsol Multiphysics and Matlab. The results and the efficiency enhancement are examined and discussed. © 2022, The Authors. All rights reserved.

关键词： Phase change materials

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Insight into Selenium Biofortification and Selenite Metabolic Mechanism of Monascus ruber Through Physicochemical Characterization and Transcriptome Analysis

SSRN

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SSrN 2024年

作者： Zhu, Lisha Long, Pengcheng Hu, Man Wang, Liling Shao, Yanchun Cheng, Shuiyuan dong, Xingxing He, Yi National R&D Center for Se-rich Agricultural Products Processing Hubei Engineering Research Center for Deep Processing of Green Se-rich Agricultural Products School of Modern Industry for Selenium Science and Engineering Wuhan Polytechnic University Wuhan430023 China Key Laboratory for Deep Processing of Major Grain and Oil Ministry of Education Hubei Key Laboratory for Processing and Transformation of Agricultural Products School of Food Science and Engineering Wuhan Polytechnic University Wuhan430023 China College of Food Science and Engineering Tarim University Alar843300 China College of Food Science and Technology Huazhong Agricultural University Wuhan430070 China

Monascus spp., edible filamentous fungi, possess great potential for selenium (Se) supplementation. Here, the effects of Se bio-fortification on the growth, morphology, and biosynthesis of Monascus ruber M7 were investigated. Notably, the yield of orange and red Monascus pigments (MPs) in red yeast rice (rYr) increased by approximately 38.52% and 36.57%, respectively, under 20 μg/mL of selenite pressure. Meanwhile, citrinin (CIT), a mycotoxin, decreased from 244.47 μg/g to 175.01 μg/g. Transcriptome analysis revealed that twelve genes involved in MPs biosynthesis, specifically MpigN, MpigF, and MpigE, were significantly upregulated. Three genes involved in CIT biosynthesis were significantly downregulated. Moreover, metG (Log2FC = 1.8) and metH (Log2FC = 2.2) of the selenocompound metabolic pathway were significantly up-regulated, which may help accelerate the synthesis of methyl-selenol (CH3SeH). These findings provide insights into the mechanism of selenite metabolism in filamentous fungi, revealing a potential application for Monascusruber in Se supplementation and functional foods. © 2024, The Authors. All rights reserved.

关键词： Biosynthesis

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