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7th IEEE Conference on Energy Internet and Energy System Integration, EI2 2023

作者： Dai, Jiang Tian, Shijin Zhao, Qian Shan, Ke Zhang, Yanzeng Hong, Bo Guizhou Power Grid Co. Ltd. Grid Power Dispatching and Control Center Hubei China Beijing Qu Creative Technology Co. Ltd. Smart Grid Business Unit Henan China Beijing Qu Creative Technology Co. Ltd. Research and Development Center Beijing China

ISBN: (纸本)9798350345094

In order to solve the problem that it is difficult to guarantee the overall benefit maximization under the stepwise clearing of electric energy and reserve, a generation plan generation method based on joint clearing of electric energy and reserve was studied. From the two dimensions of grid absorption capacity and unit regulation capacity, the coupling characteristics between electric energy and reserve are analyzed. On this basis, combined with the needs of centralized optimization, the coupling relationship between electric energy and reserve is divided into two types: static relationship and dynamic relationship. A centralized clearing model considering the static coupling characteristics is constructed to obtain the electrical energy and reserve operation plan of the generator set. Furthermore, considering the dynamic relationship, the cleaning results are checked until the generation planning results that meet the coupling characteristics requirements are obtained. Finally, a numerical example based on IEEE 30-node system was constructed to verify the effectiveness of the proposed method. The example results show that the proposed method can avoid the problem that the clearing results do not meet the operation requirements caused by factors such as the limit of power grid transmission capacity, and improve the effectiveness of the joint clearing results. © 2023 IEEE.

关键词： Electric power transmission

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Correction: Thermal and hydrodynamic properties of coronavirus at various temperature and pressure via molecular dynamics approach

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Journal of Thermal Analysis and Calorimetry 2025年 1-2页

作者： Malekahmadi, Omid Zarei, Akbar Esfahani, Mohammad Behzad Botlani Hekmatifar, Maboud Sabetvand, Roozbeh Marjani, Azam Bach, Quang-Vu Department of Mining and Metallurgical Engineering Yazd University Yazd Iran Department of Mechanical Engineering Najafabad Branch Islamic Azad University Najafabad Iran Department of Mechanical Engineering Khomeinishahr Branch Islamic Azad University Khomeinishahr Iran Department of Energy Engineering and Physics Faculty of Condensed Matter Physics Amirkabir University of Technology Tehran Iran Institute of Research and Development Duy Tan University Danang550000 Viet Nam

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A re-assessment of archived (1989–2006) beluga liver from the North American Arctic with non-targeted analysis reveals brominated chemicals of emerging concern

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Chemosphere 2025年 377卷 144361页

作者： Bangma, Jacqueline Fuller, Chris McCord, James Whitehead, Heather Liberatore, Richard Boettger, Jason Moors, Amanda Pugh, Rebecca O'Connell, Steven G. Reiner, Jessica L. Office of Research and Development Center for Environmental Measurement and Modeling US Environmental Protection Agency NC United States Office of Research and Development Center for Computational Toxicology and Exposure US Environmental Protection Agency NC United States Oak Ridge Institute for Science and Education Oak RidgeTN37831 United States Office of Research and Development Center for Public Health and Environmental Assessment US Environmental Protection Agency United States National Institute of Standards and Technology Chemical Sciences Division CharlestonSC United States MyExposome Inc. Oregon State University United States

In 2011, 68 archived beluga whale (Delphinapterus leucas) liver samples collected from Cook Inlet and the eastern Chukchi Sea from 1989 to 2006 were characterized for 12 per- and polyfluoroalkyl substances (PFAS) using targeted mass spectroscopy (MS) methods;however, at the time of the original analysis, high resolution MS (HRMS) methods were not readily available. This follow-up study utilizes both targeted as well as cutting-edge HRMS non-targeted analysis (NTA) techniques to screen for additional PFAS as well as potential contaminants of emerging concern (CECs) in the chemical space under investigation. Targeted analysis detected perfluorodecanesulfonic acid (PFDS) and perfluoroheptane sulfonic acid (PFHpS) in 10 % and 9 % of liver samples, respectively. PFDS detections were observed only in Cook Inlet whales while PFHpS was detected in whales from both locations. In addition, NTA identified four dibrominated pyrrole ring structures two with a sulfate (C8H11NBr2SO3, and C9H13NBr2SO3, Schymanski level 3), and two with either a sulfonate or a sulfate and hydroxy group (C8H11NBr2SO4, C9H13NBr2SO4, Schymanski level 4) in whales from the eastern Chukchi Sea. Literature search reveals similar brominated metabolites from marine bacteria, sponges, and other marine organisms, suggesting the brominated CECs are of marine origin. © 2025

关键词： Chemical detection

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NOVEL MARKET DESINGS FOR FLEXIBILITY TRADING: A SCALABILITY ANALYSIS FOR THE DAY-AHEAD MARKET 14

NOVEL MARKET DESINGS FOR FLEXIBILITY TRADING: A SCALABILITY ...

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14th Mediterranean Conference on Power Generation Transmission, Distribution and Energy Conversion, MEDPOWER 2024

作者： Papazoglou, Georgios K. Forouli, Aikaterini A. Bakirtzis, Emmanouil A. Biskas, Pandelis N. Bakirtzis, Anastasios G. Fano, Natalia School of Electrical & Computer Engineering Aristotle University of Thessaloniki Greece Department of Research Technology & Development Hellenic Energy Exchange S.A. Athens Greece Department of Computer Informatics and Telecommunications Engineering International Hellenic University Serres Greece Innovation Department Estabanell y Pahisa Energia S.A.U Granollers Spain

ISBN: (纸本)9781837242689

The aim of this paper is to gain evidence of the scalability of flexibility trading mechanisms by executing large scale simulations for day-ahead trading of flexibility. The objective is to allow the quantification of the impact of flexibility provision at the distribution level and prove the effectiveness of flexibility trading in solving grid issues, delivering in this way scalable operational mechanisms ready to be integrated in EU electricity markets. Initially, the proposed market mechanism is validated by using dummy grid data and considering virtual DSO needs. Next, real-life simulations are executed using operational grid data from the region of Catalonia, Spain. Simulations results indicate that the proposed mechanism exhibits satisfactory scalability and accuracy and is able to efficiently address issues of the distribution network safeguarding the security of supply and quality of service in the distribution grid. © The Institution of Engineering & technology 2024.

关键词： Power distribution networks

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Thermal strain engineering in cobalt-coordinated Mo_(2)N for efficient ampere-level current density alkaline fresh/seawater hydrogen evolution electrocatalysis

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Journal of Energy Chemistry 2025年第4期103卷 282-293页

作者： Yuwen Hu Meilian Tu Tuzhi Xiong Yanxiang He Muhammad Mushtaq Hao Yang Zeba Khanam Yongchao Huang Jianqiu Deng M.-Sadeeq Balogun College of Materials Science and Engineering Hunan Joint International Laboratory of Advanced Materials and Technology for Clean EnergyHunan UniversityChangsha 410082HunanChina School of Chemistry and Chemical Engineering University of South ChinaHengyang 421001HunanChina School of Chemistry&Chemical Engineering Guangxi Key Laboratory of Electrochemical Energy MaterialsGuangxi Colleges and Universities Key Laboratory of Applied Chemistry Technology and Resource DevelopmentGuangxi UniversityNanning 530004GuangxiChina Institute of Environmental Research at Greater Bay Key Laboratory for Water Quality and Conservation of the Pearl River DeltaMinistry of EducationGuangzhou UniversityGuangzhou 510006GuangdongChina Guangxi Key Laboratory of Information Materials Guilin University of Electronic TechnologyGuilin 541004GuangxiChina State Key Laboratory of Non-Food Biomass and Enzyme Technology Guangxi Academy of SciencesNanning 530007GuangxiChina

Lattice-strain engineering has demonstrated its capability to influence the electronic structure and catalytic performance of ***,we present a facile method for inducing thermal strain in cobalt/molybdenum nitride rod-shaped structures(denoted Co/Mo_(2)N)via ammonia-assisted reduction,which effectively modulating the HER *** optimized Co/Mo_(2)N-500,characterized by 3%tensile lattice strain,demonstrates exceptional HER activity with lower overpotentials of140 mV and 184 mV at high current density of 1000 mA cm^(-2)in alkaline freshwater and seawater electrolytes,***/Mo_(2)N also exhibits excellent long-term durability even at a high current density of 300 mA cm^(-2),surpassing its counterparts and benchmark Pt/C *** functional theory calculations validate that the tensile strain optimizes the d-band states,water dissociation,and hydrogen adsorption kinetics of the strained Mo_(2)N in Co/Mo_(2)N,thereby improving its catalytic *** work provides valuable insights into controlling lattice strain to develop highly efficient electrocatalysts towards advanced electrocatalytic applications.

关键词： Co/Mo_(2)N Thermal strain engineering Hydrogen evolution reaction Ampere-level current density Seawater splitting

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Keratin Extraction Optimization from Poultry Feather Using Response Surface- Box-Behnken Experimental Design Method

SSRN

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SSRN 2024年

作者： Kebede, Ashagrie Mengistu Andualem, Getaneh Abewaa, Mikiyas Birhane, Daniel The Federal Democratic Republic of Ethiopia Manufacturing Industry Development Institute P.O. Box 1180 Addis Ababa Ethiopia Manufacturing Industry Development Institute Leather and Leather products Industry Research and Development Center P.O. Box 24692 code 1000 Addis Ababa Ethiopia Department of Chemical Engineering College of Engineering and Technology Wachemo University Hossana Ethiopia

Poultry farms face challenges in solid waste management, environmental protection, and human health due to massive feather waste generation, necessitating the development of economical treatment techniques. In this study, alkaline medium was used to hydrolyze chicken feathers and extracted keratin hydrolysate was characterized to determine its future application as a keratin filler. The Box-Behnken experimental design approach of the design expert coupled with response surface methodology was used to design the experiment, to model and optimize the operational parameters that affect the extraction process. Moreover, the Box-Behnken experimental design of 33 was conducted using design expert considering three parameters of NaOH solution concentration (0.45N, 0.65N and 0.85N), temperature (60oC, 70oC and 80oC) and extraction time (1h, 2h and 3h). Characteristics of the extract such as functional groups and structure of the KH extracts were described using X-ray diffraction and Fourier transform infrared spectroscopy (FTIR), respectively. FTIR analysis of the extract confirmed the presence of carboxylic, amide, and aldehyde functional groups and amino acid alkyl side chains, and X-ray diffraction (XRD) analysis showed two sharp and intense peaks at the 2 theta values of 9.46o and 18.96o, respectively due to [[EQUATION]]-helix and [[EQUATION]]- sheet structure in keratin protein. On the other hand, temperature and NaOH solution concentration were found to have a negative effect in increasing the upper bound and an optimum parameter of 0.65N, 70oC, and 1h were obtained with a maximum average protein yield of 89.71% using the biuret test method. © 2024, The Authors. All rights reserved.

关键词： Fillers

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Geochemistry and Petrogenesis of Late Cretaceous–Paleocene Granites from the Tengchong Block, Western Yunnan: Implications for Angle-switching of Subducting Slab

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Acta Geologica Sinica(English Edition) 2022年第5期96卷 1600-1614页

作者： CHEN Xijie MENG Yuanku CAI Zhihui LI Huaqi LIU Xiaojia Development and Research Center of China Geological Survey Beijing 100037China Key Laboratory of Deep-Earth Dynamics of Ministry of Natural Resources Institute of GeologyChinese Academy of Geological SciencesBeijing 100037China State Key Laboratory for Mineral Deposits Research Nanjing UniversityNanjing 210023China College of Earth Science and Engineering Shandong University of Science and TechnologyQingdaoShandong 266590China

The Cenozoic geological hallmark of Western Yunnan is the characteristic voluminous Late Cretaceous-Eocene granites;however, their geological background and petrogenesis have not been well constrained and elucidated. In this study, we present new zircon U-Pb dating, along with geochemical and Sr-Nd-Hf isotopic data for granites from the Tengchong–Lianghe granitoid belt(as abbreviated to Tengliang belt) and West Yingjiang batholiths from the Tengchong block. The mineralogical and geochemical features of the Tengliang granites and the West Yingjiang batholiths are ascribed to aluminous S-type granites and weak peraluminous I-type, respectively. Zircon U-Pb analyses yielded consistent ages ranging from 67.5 Ma, 68.4 Ma and 66.2 Ma from the Tengliang granitoid belt and 50.4 Ma to 60.8 Ma for three samples from the west Yingjiang batholiths. The Tengliang granites were emplaced during the Late Cretaceous(68-66 Ma) and demonstrate negative ε_(Hf)(t) values(-24 to-4) and initial ~(87)Sr/~(86)Sr ratios of 0.7101–0.7139 and significant negative ε_(Nd)(t) values from-8.91 to-13.2, indicating a Proterozoic sedimentary source or enriched components. The hornblende-bearing I-type granites from West Yingjiang are characterized by lower initial ~(87)Sr/~(86)Sr ratios of 0.7076–0.7106, compared to Tengliang granite and negative whole-rock ε_(Nd)(t) values from-4.0 to-11.9. The early Eocene west Yingjiang gneissic granites show wide ranges of ε_(Hf)(t) values from +7.4 to-8.5 and T_(2DM) of 1.30–0.65 Ga, indicating partial melting of ancient crust with contributions of depleted mantle materials. In combination with the regional background and previous studies, we propose that such a spatio-temporal distribution of the Tengchong granitoid belt might be related to the rollback or angleswitching of the Neo-Tethyan subducting slab. This study sheds new light on the evolutionary history of the Tengchong block.

关键词： petrogenesis gneissic granite subduction angle switch Tengchong block Cenozoic Neo-Tethyan

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Clinical and biomarker analyses of SHR-1701 combined with famitinib in patients with previously treated advanced biliary tract cancer or pancreatic ductal adenocarcinoma:a phase II trial

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Signal Transduction and Targeted Therapy 2025年第1期10卷 328-339页

作者： Lixia Yi Haoqi Pan Zhouyu Ning Litao Xu Hena Zhang Longfei Peng Yaowu Liu Yifan Yang Waimei Si Ying Wang Xiaoyan Zhu Shenglin Huang Zhiqiang Meng Jing Xie Department of Integrative Oncology Fudan University Shanghai Cancer CenterShanghaiChina Department of Minimally Invasive Therapy Center Fudan University Shanghai Cancer CenterShanghaiChina Department of Oncology Shanghai Medical CollegeFudan UniversityShanghaiChina Shanghai Key Laboratory of Medical Epigenetics Institutes of Biomedical SciencesFudan UniversityShanghaiChina Suzhou Institute of Biomedical Engineering and Technology Chinese Academy of SciencesSuzhouChina Clinical Research&Development Jiangsu Hengrui Pharmaceuticals Co.Ltd.ShanghaiChina

Advanced biliary tract cancer(BTC)and pancreatic ductal adenocarcinoma(PDAC)have poor prognoses and limited treatment ***,we conducted thisfirst-in-class phase II study to evaluate the efficacy and safety of SHR-1701,a bifunctional fusion protein targeting programmed death-ligand 1(PD-L1)and transforming growth factor-beta(TGF-β),combined with famitinib,a multi-targeted receptor tyrosine kinase inhibitor,in patients with advanced BTC or PDAC who failed previous standard treatment(trial registration:ChiCTR2000037927).Among 51 enrolled patients,the BTC cohort showed an objective response rate(ORR)of 28%(including 2 complete responses)and a disease control rate(DCR)of 80%,with a median progression-free survival(mPFS)of 5.1 months and a median overall survival(mOS)of 16.0 *** the PDAC cohort,the ORR was 15%(2 complete responses),with a DCR of 60%,and the mPFS and mOS were 2.1 months and 5.3 months,*** 3 or 4 treatment-related adverse events(TRAEs)occurred in 29.4%of patients,with no grade 5 TRAEs *** analyses revealed that primary tumor resection history,peripheral blood immunophenotype changes,and distinct immune-metabolic profiles were associated with treatment *** immune/metabolism score integrating the features of six genes was developed as a predictive biomarker for immunotherapy response in multiple cohorts,allowing for the selection of patients most likely to experience positive outcomes from this therapy *** conclusion,our study provides proof-of-concept data supporting the potential of SHR-1701 plus famitinib as an effective and safe subsequent-line therapy for refractory BTC and PDAC,highlighting the promise of targeting PDL1,TGF-β,and angiogenesis pathways simultaneously.

关键词： patients adenocarcinoma metabolism

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Thermal barrier coatings for molybdenum produced using nanopowders

Thermal barrier coatings for molybdenum produced using nanop...

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International Conference on Processing and Manufacturing of Advanced Materials Processing, Fabrication, Properties, Applications, THERMEC 2021

作者： Goral, Marek Kubaszek, Tadeusz Drajewicz, Marcin Borowski, Przemyslaw Research and Development Laboratory for Aerospace Materials Rzeszow University of Technology Powstancow Warszawy 12 Rzeszow35-959 Poland

ISBN: (纸本)9783035736304

The molybdenum is one of the most important refractory metals used in aerospace industry. The main disadvantage of Mo is low oxidation resistance at elevated temperature and the using of protective coatings is necessary. In present article the new types of protective coatings produced by slurry method were developed. The slurries contained Al nano-powder and Si powder as well as non-organic binder (H2CrO4 and water). After immersion and drying the samples with slurries were heat treated at 1000°C in Ar atmosphere. The thickness of obtained coatings was in range 10-20 µm. The presences of phases form Mo-Al as well Mo-Si systems was analyzed using scanning electron microscopy. The developed coatings were used as a bond coat for ceramic layer produced by plasma spray physical vapour deposition method (PS-PVD). In this process the columnar ceramic layer contains yttria stabilized zirconia (YSZ) was obtained wit thickness above 100 µm. The obtained results showed that it is possible to obtain TBC coating on molybdenum contained Al-Si bond coat and outer YSZ ceramic layer. The proposed coating can be used in aerospace applications. © 2021 Trans Tech Publications Ltd, Switzerland.

关键词： Physical vapor deposition

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Optimization of industrial process parameter control using improved genetic algorithm for industrial robot

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Paladyn 2022年第1期13卷 67-75页

作者： Yao, Cenglin Li, Yongzhou Ansari, Mohd Dilshad Talab, Mohammed Ahmed Verma, Amit Evergrande School of Management Wuhan University of Science and Technology Hubei Wuhan430081 China College of Mechanical and Electrical Engineering Wuhan Business University Hubei Wuhan430056 China CMR College of Engineering and Technology Hyderabad501401 India Department of Engineering of Computer Technology Al Maarif University College Ramadi Iraq University Centre for Research & Development Chandigarh University Punjab Mohali India

A number of suggestions are made based on the improved evolutionary algorithm and using the polishing parameter optimization of an industrial robot as an example to optimize the industrial process parameter control. By fitting a cubic B-spline curve, the trajectory curve of each joint is determined. The kinematic constraint is replaced with the control point constraint of a B-spline curve, and the time optimal time node is solved using an enhanced evolutionary algorithm. This foundation allows for the creation of the nonlinear trajectory curve that satisfies the time optimization. The research shows that based on the improved genetic algorithm (GA), the "degradation"phenomenon of the traditional GA can be avoided, and the optimal solution can be obtained faster, that is, the polishing working time of the polishing industrial robot reaches the optimal level. An enhanced GA that incorporates simulated annealing is suggested to address the mathematical model of robot deburring process parameter optimization. Population selection is accomplished by the use of metropolis sampling, which successfully addresses the issue of the GA's simple local convergence. The process parameter optimization verification is done while a robot deburring test platform is being constructed. The test results demonstrate a considerable reduction in burr removal time per unit length and an increase in efficiency when compared with the empirical method. © 2022 Cenglin Yao et al., published by De Gruyter.

关键词： Genetic algorithms

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