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A multiscale adaptive framework based on convolutional neural network: Application to fluid catalytic cracking product yield prediction

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Petroleum Science 2024年第4期21卷 2849-2869页

作者： Nan Liu Chun-Meng Zhu Meng-Xuan Zhang xing-ying Lan State Key Laboratory of Heavy Oil Processing China University of Petroleum (Beijing) College of Artificial Intelligence China University of Petroleum (Beijing)

Since chemical processes are highly non-linear and multiscale, it is vital to deeply mine the multiscale coupling relationships embedded in the massive process data for the prediction and anomaly tracing of crucial process parameters and production indicators. While the integrated method of adaptive signal decomposition combined with time series models could effectively predict process variables, it does have limitations in capturing the high-frequency detail of the operation state when applied to complex chemical processes. In light of this, a novel Multiscale Multi-radius Multi-step Convolutional Neural Network(Msrt Net) is proposed for mining spatiotemporal multiscale information. First, the industrial data from the Fluid Catalytic Cracking(FCC) process decomposition using Complete Ensemble Empirical Mode Decomposition with Adaptive Noise(CEEMDAN) extract the multi-energy scale information of the feature subset. Then, convolution kernels with varying stride and padding structures are established to decouple the long-period operation process information encapsulated within the multi-energy scale data. Finally, a reconciliation network is trained to reconstruct the multiscale prediction results and obtain the final output. Msrt Net is initially assessed for its capability to untangle the spatiotemporal multiscale relationships among variables in the Tennessee Eastman Process(TEP). Subsequently, the performance of Msrt Net is evaluated in predicting product yield for a 2.80 × 10～6 t/a FCC unit, taking diesel and gasoline yield as examples. In conclusion, Msrt Net can decouple and effectively extract spatiotemporal multiscale information from chemical process data and achieve a approximately reduction of 30% in prediction error compared to other time-series models. Furthermore, its robustness and transferability underscore its promising potential for broader applications.

关键词： Fluid catalytic cracking Product yield Data-driven modeling Multiscale prediction Data decomposition Convolution neural network

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New approach to measuring topological phase transitions utilizing Floquet technology

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Chinese Physics B 2024年第9期33卷 282-288页

作者： Xue-ying Yang Wei Wu Ping-xing Chen College of Sciences National University of Defense TechnologyChangsha 410073China

The Floquet technique provides a novel anomalous topological phase for non-equilibrium phase *** on the high symmetry of the quantum anomalous Hall model,the findings suggest a one-to-one correspondence between the average spin texture and the Floquet quasi-energy spectrum.A new approach is proposed to directly measure the quasienergy spectrum,replacing previous measurements of the average spin ***,we proposed a reliable experimental scheme based on ion trap *** scheme markedly reduces the measurement workload,improves the measurement fidelity,and is applicable to multiple platforms such as cold atoms and nuclear magnetic resonance.

关键词： topological phase transition Floquet technique ion trap

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Experience of humanistic nursing in hemodialysis nursing for patients with diabetic kidney disease

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World Journal of Diabetes 2024年第2期15卷 186-195页

作者： Xiao-ying Chai Xiao-Yan Bao ying Dai xing-xing Dai Yu Zhang Yu-Ling Yang Department of Nephrology The Affiliated Hospital of Jiangnan UniversityWuxi 214000Jiangsu ProvinceChina Department of Hemodialysis The Affiliated Hospital of Jiangnan UniversityWuxi 214000Jiangsu ProvinceChina Department of Endocrinology The Affiliated Hospital of Jiangnan UniversityWuxi 214000Jiangsu ProvinceChina

BACKGROUND Diabetic kidney disease(DKD)is a prevalent complication of diabetes that often requires hemodialysis for *** the field of nursing,there is a growing recognition of the importance of humanistic care,which focuses on the holistic needs of patients,including their emotional,psychological,and social ***,the application of humanistic nursing in the context of hemodialysis for DKD patients remains relatively *** To explore the experience of humanistic nursing in hemodialysis nursing for DKD *** Ninety-six DKD patients treated with hemodialysis from March 2020 to June 2022 were included in the study and divided into the control cluster(48 cases)and the study cluster(48 cases)according to different nursing methods;the control cluster was given routine nursing and the study cluster was given humanized *** variances of negative emotion mark,blood glucose,renal function,the incidence of complications,life mark and nursing satisfaction before and after nur-sing were contrasted between the two *** No significant difference in negative emotion markers between the two clusters were observed before nursing(P>0.05),and the negative emotion markers of the two clusters decreased after *** Hamilton Anxiety Rating Scale and Hamilton Depression Rating Scale markers were lower in the study cluster than the control *** healing rate of patients in the study cluster was significantly higher than the control cluster(97.92%vs 85.42%,P0.05).However,after nursing,blood urea nitrogen and serum creatinine(SCr)levels in the study cluster were lower than those in the control cluster(P<0.05).The incidence rate of complications was significantly lower in the study group compared to the control cluster(6.25%vs 20.83%,P<0.05).There was no significant difference in the life markers between the two clusters be

关键词： Diabetic kidney disease Hemodialysis Humanistic nursing Incidence of complication Effect

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Distribution of oxide inclusions in H13 castings under super-gravity field with multi-stage rotation speeds

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Journal of Iron and Steel Research International 2024年第1期31卷 121-133页

作者： Shao-ying Li Xiao-jun Xi xing-ming Zhao Han-jie Guo Jing Guo School of Metallurgical and Ecological Engineering University of Science and Technology Beijing(USTB)Beijing100083China Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials Beijing100083China Beijing Beiye Functional Materials Corporation Beijing100192China Shandong Tianwu Forming Technology Co. Ltd.Liaocheng252024ShandongChina

The 42 kg industrial H13 castings were prepared by different super-gravity fields with multi-rotation speeds,and the distribution of oxide inclusions in the castings was *** addition,the inward movement Reynolds number and inward movement time of oxide inclusions as well as the solidification time of molten steel at different positions in the castings were calculated to clarify the removal mechanism of oxide inclusions in super-gravity *** results show that the large size(i.e.,greater than 10μm)oxide inclusions are mainly concentrated in the inner and outer parts of the super-gravity castings with constant rotation speed(500 r min^(-1))and five-stage rotation speeds(500,600,750,850,and 950 r min^(-1)),respectively,while there are no large oxide inclusions in the super-gravity castings with three-stage rotation speeds(500,600,and 750 r min^(-1)).Although an increase in the particle size of inclusion and the rotation speed in super-gravity field is conducive to the increase in the inward movement Reynolds number of oxide inclusions and reduction in the inward movement time of oxide inclusions,it will reduce the local solidification time of molten *** the range of the rotation speed studied,the super-gravity field with three-stage rotation speeds has the best effect on the removal of inclusions in H13 molten steel.

关键词： Distribution Oxide inclusion H13 casting Super-gravity field Rotation speed

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经活体内肾脏病基因治疗的方法和途径

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中华肾脏病杂志 2008年第11期24卷 853-856页

作者：王涛邢昌赢南京医科大学第一附属医院(江苏省人民医院)肾内科 210029

肾脏疾病的基因治疗，是使用真核载体、病毒载体和细胞载体等载体技术，将质粒等转载入肾脏的靶细胞或者组织内以弥补自身缺陷或者增加质粒表达强度的一种技术，其为治疗肾脏疾病提供了新的对策。基因治疗的出现为肾脏病治疗开启了新的... 详细信息

肾脏疾病的基因治疗，是使用真核载体、病毒载体和细胞载体等载体技术，将质粒等转载入肾脏的靶细胞或者组织内以弥补自身缺陷或者增加质粒表达强度的一种技术，其为治疗肾脏疾病提供了新的对策。基因治疗的出现为肾脏病治疗开启了新的治疗途径，它是肾脏基因遗传缺陷病的理想治疗方法，同时还可用于肾脏其他疾病的治疗。在肾脏病治疗过程中还存在着一些难题，

关键词：基因治疗肾脏病活体内遗传缺陷病肾脏疾病真核载体载体技术细胞载体

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IL-10、IFN-γ调控早孕蜕膜基质细胞活性IL-10受体表达

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分子细胞生物学报 2006年第2期39卷 111-117页

作者：邢长英归绥琪复旦大学附属妇产科医院上海200011

研究IL-10、IFN-γ对人早孕蜕膜基质细胞活性及IL-10受体表达的影响。MTT法检测蜕膜基质细胞活性,选择两种不同作用浓度的IL-10、IFN-γ作用蜕膜基质细胞,处理15min、30min、45min、60min分别检测组胞IL-10受体R1、R2基因表达。高浓度IL... 详细信息

研究IL-10、IFN-γ对人早孕蜕膜基质细胞活性及IL-10受体表达的影响。MTT法检测蜕膜基质细胞活性,选择两种不同作用浓度的IL-10、IFN-γ作用蜕膜基质细胞,处理15min、30min、45min、60min分别检测组胞IL-10受体R1、R2基因表达。高浓度IL-10(10-100ng/ml)促进蜕膜基质细胞活性(P＜0．05),低浓度IL-10(0．10-lng/ml)则无明显促进作用(P＞0．05)；高浓度IFN-γ(1000ng/ml)抑制蜕膜基质细胞活性(P＜0．01),低浓度IFN-γ(10ng/ml)反而起促进作用(P＜0．05)。较高浓度IL-10(10ng/ml)作用15min即见IL-10R1高表达,30min明显减弱,45min表达消失；较低浓度IL-10(lng/ml)作用60min内未见IL-10R1表达。IFN-γ(100ng/ml)作用45min见IL-10R1短暂低表达：较低浓度IFN-γ(10ng/ml)作用30min诱导IL-10R1中表达,45min表达减弱,60min消失。上述细胞因子作用前后IL-10R2表达差异无显著性(P＞0．05)。因此,我们认为,早孕IL-10、IFN-γ可能通过影响蜕膜基质细胞IL-10R1表达及细胞活性,发挥免疫调节作用。

关键词： IL-10 IFN-γ 蜕膜基质细胞 IL-10受体

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Assessing clogging potential and optimizing driving parameter of slurry shield tunneling in clay stratum assisted with CFD-DEM modeling

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Underground Space 2024年第1期14卷 197-218页

作者： Yi Yang xing-gao Li Han-yuan Li Yi-dong Guo ying-ran Fang Key Laboratory of Urban Underground Engineering of the Education Ministry Beijing Jiaotong UniversityBeijing 100044China School of Civil Engineering Beijing Jiaotong UniversityBeijing 100044China

This paper proposed a two-way coupled computational fluid dynamics(CFD)and discrete element method(DEM)approach to analyze the evolution of clogging in slurry shield tunneling *** interactions between clay particles and slurry were considered by exchanging three interaction forces,including buoyancy force,pressure gradient force,and drag *** CFD-DEM coupling approach was first benchmarked by comparing cutterhead torque and total thrust with field monitored data of a practical slurry shield tunnel *** evolution process of the particle phase and the fluid phase over time was *** results indicated that fewer than 70%of the particles can be washed away in time by the circulating *** 9%of the particles adhered to the submerged wall,resulting in increased cutterhead torque and *** parametric analysis,the influence of the shield driving parameters on the clay clogging behavior is further *** time history of cutterhead torque or thrust can be used as a criterion for judging whether clogging has ***,a new assessment method of clogging risk and an optimization strategy of driving parameters were proposed,which were intended to provide some guidance for similar projects.

关键词： Slurry shield Clogging Driving parameter optimization Assessment method CFD-DEM

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Kinetic study and DFT calculation on the tetracycline abatement by peracetic acid

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Chinese Chemical Letters 2024年第9期35卷 346-350页

作者： Dan-ying xing Xiao-Dan Zhao Chuan-Shu He Bo Lai College of Chemical Engineering Huaqiao UniversityXiamen 361021China State Key Laboratory of Hydraulics and Mountain River Engineering College of Architecture and EnvironmentSichuan UniversityChengdu 610065China

Water contamination by tetracycline(TC)has emerged as an environmental concern owing to its widespread use and antibiotic *** of peracetic acid(PAA)in the water and wastewater treatment has recently been proposed and demonstrated to be effective for TC abatement,yet the underlying reaction kinetics between the PAA and TC are not yet *** explore the reaction kinetics,the effect of solution pH on TC abatement by PAA is studied and the species-specific rate constants are *** ability to donate and accept electrons for different species of TC and PAA is evaluated via density functional theory(DFT)*** pH-dependent apparent second-order rate constants of TC abatement by PAA exhibits the parabolic shape with the maximum at p H 8.5(9.75 L mol^(-1)s^(-1)).This phenomenon is closely related to the speciation of TC and PAA,in which the reaction between PAAH and TTC^(2-)possesses the highest species-specific rate constants according to the kinetic *** DFT calculations suggest that the HOMO of TTCH^(+),TTC,TTC^(-),TTC^(2-)and the LUMO of PAAH and PAA-are–6.40,–6.26,–5.10,–4.94 e V and–0.24,0.60 e V,*** to the DFT calculations,deprotonation of TC and PAA leads to an increase of the HOMO value of TC and the LUMO value of ***,the HOMOTC–LUMOPAAvalues is in good agreement with the trend of species-specific rate constants,which can be used to evaluate the reactivity between PAA and TC with different *** study provides the kinetic data and theoretical basis for the reaction of PAA and TC,which is critical for the application of PAA in the treatment of water and wastewater.

关键词： Peracetic acid Tetracycline Kinetics Rate constants DFT calculation

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Nitrogen–sulfur co-doped porous carbon derived from asphalt as efficient catalyst for oxygen reduction

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Rare Metals 2024年第1期43卷 380-388页

作者： Jing-Sheng Ma Ming-Zai Wu Ling Chen Li-xing Zhang ying Xiong Key Laboratory of Structure and Functional Regulation of Hybrid Materials Ministry of EducationInstitute of EnergyHefei Comprehensive National Science CenterAnhui UniversityHefei 230601China

As an environment-friendly and low-cost petrochemical by-product, asphalt has great potential in the preparation of metal-free oxygen reduction electrocatalysts with excellent performance and outstanding stability. In this paper, we converted asphalt into porous carbon nanosheets by a simple activation method, using potassium citrate as the swelling agent.

关键词： stability porous catalyst

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Therapeutic Role of Chinese Medicine Targeting Nrf2/HO-1 Signaling Pathway in Myocardial Ischemia/Reperfusion Injury

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Chinese Journal of Integrative Medicine 2024年第10期30卷 949-960页

作者： LIU chang-xing GUO Xin-yi ZHOU Ya-bin WANG He First Clinical Medical School Heilongjiang University of Chinese Medicine Clinical Medical School Chengdu University of Traditional Chinese Medicine Department of Cardiology the First Affiliated Hospital of Heilongjiang University of Chinese Medicine

Acute myocardial infarction(AMI), characterized by high incidence and mortality rates, poses a significant public health threat. Reperfusion therapy, though the preferred treatment for AMI, often exacerbates cardiac damage, leading to myocardial ischemia/reperfusion injury(MI/RI). Consequently, the development of strategies to reduce MI/RI is an urgent priority in cardiovascular therapy. Chinese medicine, recognized for its multi-component, multi-pathway, and multi-target capabilities, provides a novel approach for alleviating MI/RI. A key area of interest is the nuclear factor E2-related factor 2(Nrf2)/heme oxygenase-1(HO-1) pathway. This pathway is instrumental in regulating inflammatory responses, oxidative stress, apoptosis, endoplasmic reticulum stress, and ferroptosis in MI/RI. This paper presents a comprehensive overview of the Nrf2/HO-1 signaling pathway's structure and its influence on MI/RI. Additionally, it reviews the latest research on leveraging Chinese medicine to modulate the Nrf2/HO-1 pathway in MI/RI treatment.

关键词： Chinese medicine mechanisms myocardial ischemia/reperfusion injury nuclear factor E2-related factor 2/heme oxygenase-1 signaling pathway

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