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Energy flexibility and resilience analysis of demand-side energy efficiency measures within existing residential houses during cold wave event

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Building Simulation 2024年第7期17卷 1043-1063页

作者： Xiaoyi Zhang Fu Xiao Yanxue Li yi ran Weijun Gao Innovation Institute for Sustainable Maritime Architecture Research and Technology Qingdao University of TechnologyQingdaoChina Department of Building Environment and Energy Engineering The Hong Kong Polytechnic UniversityHong KongChina Faculty of Environmental Engineering The Universityof KitakyushuKitakyushuJapan

Using the behind-meter data,this study applied a comparison and optimization-based framework to evaluate the energy flexibility and resilience of distributed energy resources within existing houses during cold wave *** analysis demonstrates the effectiveness of high envelope insulation level in improving energy resilience,identifies impacts of distributed energy resources on variations of household electricity ***,a 14.6%reduction in the median value of the normalized load of building group with low U-values,implementations of cogeneration system effectively suppressed variations of electricity *** energy performances of on-site generators are evaluated based on high resolution data,energy flexibility of domestic hot water and thermostatically controlled loads were investigated through built demand response *** reveal that electrifying hot water demand offers additional power flexibility,the integration of fuel cell cogeneration system has proven to be an efficient energy resource,enabling on-site generation of both electricity and hot water,substantially reducing grid *** extreme cold event resulted in significant spikes in space heating power *** optimization results demonstrate that reducing the indoor setpoint temperature effectively decreases daily power consumption by approximately 5.0%per degree *** findings help acquire better understanding of interconnections between energy efficiency and resilience of residential energy-efficient measures.

关键词： system modeling energy efficiency energy resilience cold wave thermal comfort

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Slowly rotating charges from Weyl double copy for Kerr black hole with Chern-Simons correction

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Communications in Theoretical Physics 2024年第8期76卷 139-146页

作者： yi-ran Liu Jing-Rui Zhang Yun-Long Zhang School of Fundamental Physics and Mathematical Sciences Hangzhou Institute for Advanced StudyUCASHangzhou 310024China CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100149China National Astronomy Observatories Chinese Academy of ScienceBeijing 100101China International Center for Theoretical Physics Asia-Pacific Beijing/HangzhouChina

The Weyl double copy builds the relation between gauge theory and gravity theory, in particular the correspondence between gauge solutions and gravity solutions. In this paper, we obtain the slowly rotating charge solutions from the Weyl double copy for the Kerr black hole with small Chern-Simons correction. Based on the Weyl double copy relation, for the Petrov type D solution in Chern-Simons modified gravity, we find the additional correction to the electromagnetic field strength tensor of the rotating charge. For the Petrov type I solution, we find that the additional electromagnetic field strength tensors have external sources, while the total sources vanish at the leading order.

关键词： Chern-Simons modified gravity Weyl double copy Kerr black hole

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Superhydrophilic nickel hydroxide ultrathin nanosheets enable high-performance asymmetric supercapacitors

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Rare Metals 2024年第1期43卷 138-147页

作者： yi-ran Wang Fei Zhang Jian-Min Gu Xiao-Yu Zhao ran Zhao Xing Wang Tian-Hui Wu Jing Wang Ji-Dong Wang De-Song Wang State Key Laboratory of Metastable Materials Science and Technology(MMST) Hebei Key Laboratory of Applied ChemistryYanshan UniversityQinhuangdao 066004China Department of Food and Pharmaceutical Engineering Suihua UniversitySuihua 152000China School of Chemical Science and Engineering Tongji UniversityShanghai 200092China School of Sciences Hebei University of Science and TechnologyShijiazhuang 050018China

Superhydrophilic surfaces have been applied for supercapacitor;however,during energy storage reaction,how the wettability affects the process of electrochemical reaction specifically is still ***,we demonstrate superhydrophilic surface for promotion of electrochemical reactions by liquid affinity and further explain the mechanism,where the transition of the wettability state caused by the change in surface free energy is the main reason for the obvious increase in specific *** citric acid assistance strategy,an intrinsically hydrophobic Ni(OH)_(2)thick nanosheets(HNHTNs,16 nm)can be transitioned into superhydrophilic Ni(OH)_(2)ultrathin nanosheets(SNHUNs,6.8 nm),where the water contact angle was 0°and the surface free energy increased from 8.6to 65.8 mN·m^(-1),implying *** with HNHTNs,the specific capacitance of SNHUNs is doubled:from 1230 F·g^(-1)(HNHTNs)to 2350 F·g^(-1)(2A·g^(-1))and,even at 20 A·g^(-1),from 833 F·g^(-1)(HNHTNs)to 1670 F·g^(-1).The asymmetric capacitors assembled by SNHUNs and activated carbon show 52.44 Wh·kg^(-1)at 160W·kg^(-1)and excellent stability with~90%retention after5000 cycles(~80%retention after 9500 cycles).The promotion of electrochemical performances is ascribed to the change of surface wettability caused by surface free energy,which greatly increase affinity of electrode to the surrounding liquid environment to reduce the interface resistance and optimize the electron transport path.

关键词： Asymmetric supercapacitor Superhydrophilic interface Transition metal hydroxides Ultrathin nanosheets High specific capacitance

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Exploring the vital role of microglial membrane receptors in Alzheimer’s disease pathogenesis: a comprehensive review

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BIOCELL 2024年第7期48卷 1011-1022页

作者： JUN-FENG ZHAO yi-ran JIANG TIAN-LIN GUO YONG-QING JIAO XUN WANG Department of Neurointervention Center Dalian No.3 People’s HospitalDalian Medical UniversityDalianChina Department of Clinical Medicine China Medical UniversityShenyangChina

Neurodegenerative diseases constitute a broad category of diseases caused by the degeneration of the *** are mainly manifested by the gradual loss of neuron structure and function and eventually can cause death or loss of *** the global population ages rapidly,increased people are being diagnosed with neurodegenerative *** has been established that the onset of Alzheimer’s disease(AD)is closely linked with increasing age and its major pathological features include amyloid-beta plaques(Aβ),Tau hyperphosphorylation,Neuroﬁbrillary tangles(NFTs),neuronal death as well as synaptic *** involvement of microglia is crucial in the pathogenesis and progression of AD and exhibits a dual *** instance,in the early stage of AD,microglia surface membrane proteins or receptors can participate in immunophagocytosis,and anti-inﬂammatory functions and act as a physical barrier after recognizing various ligands such as Aβand ***,in the later stage of the disease,membrane receptors on the surface of microglia can cause its activation to release a substantial quantity of pro-inﬂammatory *** can amplify the neuroinﬂammatory *** rapid decline of normal immune phagocytosis can result in the continuous accumulation of abnormal proteins,leading to neuronal dysfunction and destruction of the formed physical barrier as well as the neurovascular *** can also increase the transformation of microglia from anti-inﬂammatory phenotype M2 to pro-inﬂammatory phenotype M1,induce severe neuronal injury or apoptosis,and aggravate the progression of *** to few articles have focused on the AD-related membrane protein receptors on microglia,thus in this paper,we have reviewed several representative microglial membrane proteins or receptors about their speciﬁc roles and functions implicated in AD,and expect that there will be more in-depth research and scientiﬁc research results in the treatment of AD by targeted regulation of mi

关键词： Neurodegeneration Glial cell Receptor Alzheimer’s disease

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Heparin is an effective treatment for preventing liver failure after hepatectomy

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World Journal of Gastroenterology 2024年第22期30卷 2881-2892页

作者： Zhi-ying Xu Min Peng Ming-Ming Fan Qi-Fei Zou yi-ran Li Dong Jiang Hepatic Surgery IV Shanghai Eastern Hepatobiliary Surgery HospitalThe Third Affiliated Hospital of Naval Medical UniversityShanghai 200433China Ultrasound Diagnosis PLA Naval Medical CenterShanghai 200437China Department of Ultrasound Eastern Hepatobiliary Surgery HospitalThe Third Affiliated Hospital of Naval Medical UniversityShanghai 200433China

BACKGROUND Posthepatectomy liver failure(PHLF)is one of the most important causes of death following liver ***,an established anticoagulant,can protect liver function through a number of mechanisms,and thus,prevent liver *** To look at the safety and efficacy of heparin in preventing hepatic dysfunction after *** The data was extracted from Multiparameter Intelligent Monitoring in Intensive Care III(MIMIC-III)v1.4 pinpointed patients who had undergone hepatectomy for liver cancer,subdividing them into two cohorts:Those who were injected with heparin and those who were *** statistical evaluations used were unpaired ttests,Mann-Whitney U tests,chi-square tests,and Fisher’s exact tests to assess the effect of heparin administration on PHLF,duration of intensive care unit(ICU)stay,need for mechanical ventilation,use of continuous renal replacement therapy(CRRT),incidence of hypoxemia,development of acute kidney injury,and ICU *** regression was utilized to analyze the factors related to PHLF,with propensity score matching(PSM)aiming to balance the preoperative disparities between the two *** In this study,1388 patients who underwent liver cancer hepatectomy were *** yielded 213 matched pairs from the heparin-treated and control *** univariate analyses indicated that heparin potentially reduces the risk of PHLF in both matched and unmatched *** analysis in the matched cohorts confirmed a significant association,with heparin reducing the risk of PHLF(odds ratio:0.518;95%confidence interval:0.295-0.910;P=0.022).Additionally,heparin treatment correlated with improved short-term postoperative outcomes such as reduced ICU stay durations,diminished requirements for respiratory support and CRRT,and lower incidences of hypoxemia and ICU *** Liver failure is an important hazard following hepatic *** ICU care heparin administration has been proved to decr

关键词： Liver resection Posthepatectomy liver failure Prophylactic treatment Heparin Prognosis of hepatectomy

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Predicting hepatocellular carcinoma: A new non-invasive model based on shear wave elastography

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World Journal of Gastroenterology 2024年第25期30卷 3166-3178页

作者： Dong Jiang yi Qian yi-Jun Gu Ru Wang Hua Yu Hui Dong Dong-Yu Chen Yan Chen Hao-Zheng Jiang Bi-Bo Tan Min Peng yi-ran Li Department of Ultrasound Eastern Hepatobiliary Surgery HospitalThe Third Affiliated Hospital of Naval Medical UniversityShanghai 200433China Department of Pathology Shanghai Eastern Hepatobiliary Surgery HospitalThird Affiliated Hospital of Naval Medical UniversityShanghai 200433China Department of College of Art and Science Case Western Reserve UniversityClevelandOH 44106United States Ultrasound Diagnosis PLA Naval Medical CenterShanghai 200437China

BACKGROUND Integrating conventional ultrasound features with 2D shear wave elastography(2D-SWE)can potentially enhance preoperative hepatocellular carcinoma(HCC)*** To develop a 2D-SWE-based predictive model for preoperative identification of *** A retrospective analysis of 884 patients who underwent liver resection and pathology evaluation from February 2021 to August 2023 was conducted at the Oriental Hepatobiliary Surgery *** patients were divided into the modeling group(n=720)and the control group(n=164).The study included conventional ultrasound,2D-SWE,and preoperative laboratory *** logistic regression was used to identify independent predictive factors for RESULTS In the modeling group analysis,maximal elasticity(Emax)of tumors and their peripheries,platelet count,cirrhosis,and blood flow were independent risk indicators for *** factors yielded an area under the curve of 0.77(95%confidence interval:0.73-0.81)with 84%sensitivity and 61%*** model demonstrated good calibration in both the construction and validation cohorts,as shown by the calibration graph and Hosmer-Lemeshow test(P=0.683 and P=0.658,respectively).Additionally,the mean elasticity(Emean)of the tumor periphery was identified as a risk factor for microvascular invasion(MVI)in malignant liver tumors(P=0.003).Patients receiving antiviral treatment differed significantly in platelet count(P=0.002),Emax of tumors(P=0.033),Emean of tumors(P=0.042),Emax at tumor periphery(P<0.001),and Emean at tumor periphery(P=0.003).CONCLUSION 2D-SWE’s hardness value serves as a valuable marker for enhancing the preoperative diagnosis of malignant liver lesions,correlating significantly with MVI and antiviral treatment efficacy.

关键词： Shear wave elastography Predicting model Microvascular invasion Antiviral treatment Hepatocellular carcinoma

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Single-atom catalysts: controlled synthesis and dynamic mechanism in electrochemical oxygen evolution substitution reactions

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Rare Metals 2024年第10期43卷 4903-4920页

作者： Qin Zhao Rong Gan yi-Ling ran Quan-Lei Ma Wen-Wen Chen Yue-Xin Guo Yan Zhang Ding-Sheng Wang School of Chemistry Southwest Jiaotong University School of Life Science and Engineering Southwest Jiaotong University Engineering Research Center of Advanced Rare Earth Materials Department of ChemistryTsinghua University

Single-atom catalysts(SACs) have attracted much attention in the field of electrocatalysis due to their100% atomic utilization efficiency, clear active center and adjustable support. The application of SACs to anodic oxygen evolution substitution reactions with high conversion efficiency and selectivity is undoubtedly ***, a full understanding of the interactions between metal single-atom active sites and supports, and an in-depth understanding of the active centers and catalytic mechanisms of SACs in the electro-oxidation of small molecules are the keys to the development of high-performance catalysts. This review focuses on the synthesis of different support SACs and the interactions between single atoms and supports at the inter-face, and introduces the reaction mechanism of SACs in the electro-oxidation of different small-molecule substrates, such as ethanol, urea and hydrazine, with the aim of providing insights and ideas for the design of more efficient and ideal catalysts. Finally, we discuss the current challenges and future opportunities in the field.

关键词： Synthesis (chemical)

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外卖平台“算法取中”:制度逻辑与规范构造

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上海经济研究 2024年第8期 97-114页

作者：李怡然中共上海市静安区委党校(行政学院) 200435

外卖平台算法的一元价值导向形成了对骑手等主体的权利损害。因此,学术界对于外卖平台算法治理形成了效率说、知情权保障说、民主协商权保障说、劳动权益保障说、利益平衡说等诸多理论。综合吸收借鉴各个学说理论、制度进展和平台实践,... 详细信息

外卖平台算法的一元价值导向形成了对骑手等主体的权利损害。因此,学术界对于外卖平台算法治理形成了效率说、知情权保障说、民主协商权保障说、劳动权益保障说、利益平衡说等诸多理论。综合吸收借鉴各个学说理论、制度进展和平台实践,研究认为外卖平台算法取中是劳动基准作为底限和效率标准作为上限之间的取中。在上下限的区间范围内,算法取中应充分衡量算法多元主体的多元价值,合理保护个体维度的骑手权益,充分发挥平台维度的合规责任,完善协调《劳动基准法》等法律规范供给,建立专业的算法评估协商机构。只有充分运用制约、激励、协调机制,发挥多元主体的能动性,才可维护算法视域下各项社会价值的结构均衡。

关键词：外卖平台算法取中算法治理权益保障法律规制

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Predicting short-term major postoperative complications in intestinal resection for Crohn’s disease:A machine learning-based study

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World Journal of Gastrointestinal Surgery 2024年第3期16卷 717-730页

作者： Fang-Tao Wang yin Lin Xiao-Qi Yuan Ren-Yuan Gao Xiao-Cai Wu Wei-Wei Xu Tian-Qi Wu Kai Xia yi-ran Jiao Lu yin Chun-Qiu Chen Diagnostic and Treatment Center for Refractory Diseases of Abdomen Surgery Shanghai Tenth People’s HospitalTongji University School of MedicineShanghai 200072China

BACKGROUND Due to the complexity and numerous comorbidities associated with Crohn’s disease(CD),the incidence of postoperative complications is high,significantly impacting the recovery and prognosis of ***,additional stu-dies are required to precisely predict short-term major complications following intestinal resection(IR),aiding surgical decision-making and optimizing patient *** To construct novel models based on machine learning(ML)to predict short-term major postoperative complications in patients with CD following *** A retrospective analysis was performed on clinical data derived from a patient cohort that underwent IR for CD from January 2017 to December *** study participants were randomly allocated to either a training cohort or a validation *** logistic regression and random forest(RF)were applied to construct models in the training cohort,with model discrimination evaluated using the area under the curves(AUC).The validation cohort assessed the performance of the constructed *** Out of the 259 patients encompassed in the study,5.0%encountered major postoperative complications(Clavien-Dindo≥III)within 30 d following IR for *** AUC for the logistic model was 0.916,significantly lower than the AUC of 0.965 for the RF *** logistic model incorporated a preoperative CD activity index(CDAI)of≥220,a diminished preoperative serum albumin level,conversion to laparotomy surgery,and an extended operation time.A nomogram for the logistic model was *** for the surgical approach,the other three variables ranked among the top four important variables in the novel ML *** Both the nomogram and RF exhibited good performance in predicting short-term major postoperative complic-ations in patients with CD,with the RF model showing more superiority.A preoperative CDAI of≥220,a di-minished preoperative serum albumin level,and an extended operation time might be the most crucial ***

关键词： Crohn’s disease Postoperative complications Nomogram random forest Intestinal resection

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发电机转子小齿裂纹的超声回波特性及在机检测方法

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机械工程学报 2024年第8期60卷 11-21页

作者：梁鹏赵文卓武通海冉毅西安交通大学现代设计与转子轴承系统教育部重点实验室西安710049 东方电气集团东方电机有限公司电站服务事业部德阳618099

发电机转子小齿在护环约束下具有极高的预应力,然而由于其频繁启停的特性使得电机转速变化进而致使护环离心力改变最终引起小齿齿根的交变集中应力,因而小齿齿根的疲劳裂纹是不拔环条件下发电机检测的重要内容。针对护环-小齿双层结构... 详细信息

发电机转子小齿在护环约束下具有极高的预应力,然而由于其频繁启停的特性使得电机转速变化进而致使护环离心力改变最终引起小齿齿根的交变集中应力,因而小齿齿根的疲劳裂纹是不拔环条件下发电机检测的重要内容。针对护环-小齿双层结构下小齿裂纹反射回波特性不明、信号衰减严重、检测精度低的问题,基于超声有限元声学仿真手段,探究了不同几何特征下裂纹的超声回波特性,确认了超声信号的产生机理及演变规律,构建了表征裂纹有无的尾波指标;进而规划了超声裂纹检测的扫描与判定准则,最后通过自搭建的小齿-护环高保真模拟结构试验台验证了该方法对模拟裂纹状态定性及定位检测的有效性,从而为发电机转子小齿内部裂纹缺陷的超声原位快速检测提供了一种新的思路。

关键词：疲劳裂纹无损检测超声裂纹状态

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