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A Prediction Method of Internal Solitary Wave Loads on the Semi-Submersible Platform

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China Ocean Engineering 2022年第3期36卷 464-473页

作者： ZHANG Jing-jing CHEN Ke YOU yun-xiang HAN pan-pan State Key Laboratory of Ocean Engineering Shanghai Jiao Tong UniversityShanghai 200240China School of Naval Architecture Ocean and Civil EngineeringShanghai Jiao Tong UniversityShanghai 200240China

An investigation into the prediction method for internal solitary waves(ISWs)loads on the columns and caissons of the semi-submersible platform found on three kinds of internal solitary wave theories and the modified Morison Equation is described.The characteristics of loads exerted on the semi-submersible platform model caused by the ISWs have been observed experimentally,and the inertial and drag coefficients in Morison Equation are determined by analyzing the forces of experiments.From the results,it is of interest to find that Reynolds number,KC number and layer thickness ratio have a considerable influence on the coefficients.The direction of incoming waves,how-ever,is almost devoid of effects on the coefficients.The drag coefficient of columns varies as an exponential function of Reynolds number,and inertia coefficient of columns is a power function related to KC number.Meanwhile,the drag coefficient of caissons is approximately constant in terms of regression analysis of experimental data.The results from different experimental conditions reveal that the inertia coefficient of caissons appears to be exponential correlated with upper layer depths.

关键词： semi-submersible platform Morison equation model test ISWs coefficients

Efficient photocatalysis triggered by thin carbon layers coating on photocatalysts:recent progress and future perspectives

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Science China Chemistry 2020年第10期63卷 1416-1427页

作者： Yu-Long Men Peng Liu Xingcui Peng Yun-Xiang Pan Institute of Nano Biomedicine and Engineering Shanghai Engineering Research Centre for Intelligent Diagnosis and Treatment InstrumentDepartment of Instrument Science and EngineeringSchool of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai 200240China

Solar-energy-driven photocatalysis,such as photocatalytic reduction of CO2,is promising simultaneously for the energy and environmental issues.Coating thin carbon layers with the thickness less than 10 nm on photocatalysts has been developed as an efficient strategy for enhancing the photocatalytic efficiency in recent years.In the present review,we summarize the crucial progress on carbon-coated photocatalysts.Origins for the improved light absorption,charge separation,reactant adsorption and photocatalytic stability on carbon-coated photocatalysts as well as the applications of carbon-coated photocatalysts are discussed.Future opportunities and challenges associated with carbon-coated photocatalysts are shown at the end of the review.We hope that the present review can trigger more deep insights on carbon-coated photocatalysts and provide new opportunities for developing low-cost but efficient photocatalysts.

关键词： carbon-coated photocatalysts light absorption charge separation reactant adsorption photocatalytic stability

Recent progresses on improving CO_(2)adsorption and proton production for enhancing efficiency of photocatalytic CO_(2)reduction by H_(2)O

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Green Chemical Engineering 2020年第1期1卷 33-39页

作者： Peng Liu Xingcui Peng Yu-Long Men Yun-Xiang Pan Dept.of Instrument Science and Engineering School of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai200240PR China Dept.of Chemical Engineering School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong UniversityShanghai200240PR China

Photocatalytically reducing CO_(2)by H_(2)O into valuable carbon-containing chemicals is one of the greatest concerns for both scientific and industrial communities,due to its great potential in solving energy and environmental problems.However,the photocatalytic reduction efficiency is still much lower than the need of large-scale applications.Abilities of photocatalysts in adsorbing CO_(2)and splitting H_(2)O to produce protons are crucial factors determining the photocatalytic reduction efficiency.Significant research efforts have been devoted to addressing the issues on CO_(2)adsorption and proton production.The present review discusses the recent progresses in improving CO_(2)adsorption and proton production on photocatalysts for increasing the photocatalytic reduction efficiency.Future research opportunities and challenges are also discussed.It is hoped that the present review can stimulate more deep insights on adsorption of CO_(2)and production of proton for increasing the photocatalytic reduction efficiency。

关键词： Carbon dioxide Photocatalysis Adsorption of carbon dioxide Production of proton Water splitting

Resolving vertebrate brain evolution through salamander brain development and regeneration

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Zoological Research 2023年第1期44卷 219-222页

作者： xiang-Yu pan Yan-yun Zeng Yan-Mei Liu Ji-Feng Fei Department of Pathology Guangdong Provincial People’s Hospital(Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhouGuangdong 510080China Guangdong Cardiovascular Institute Guangdong Provincial People’s HospitalGuangdong Academy of Medical SciencesGuangzhouGuangdong 510080China Key Laboratory of Brain Cognition and Education ScienceMinistry of EducationChinaInstitute for Brain Research and Rehabilitationand Guangdong Key Laboratory of Mental Health and Cognitive ScienceSouth China Normal UniversityGuangzhouGuangdong 510631China School of Medicine South China University of TechnologyGuangzhouGuangdong 510006China School of Basic Medical Sciences Southern Medical UniversityGuangzhouGuangdong 510515China

The emergence of the brain was a radical event in evolution.The global architecture of the brain is established during early embryonic development and is highly correlated with its function, with considerable morphological similarities across diverse vertebrates(Figure 1A). With evolution, however,neuronal diversity and spatial distribution of neuronal subtypes and circuits generally become more complex in the brain.

关键词： evolution evolution Figure

Critical hemodynamic therapy oriented resuscitation helping reduce lung water production and improve survival

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Chinese Medical Journal 2019年第10期132卷 1139-1146页

作者： pan pan Long-xiang Su xiang Zhou yun Long Da-Wei Liu Xiao-Ting Wang Department of Critical Care Medicine Peking Union Medical College Hospital Peking Union Medical College & Chinese Academy of Medical Sciences Beijing 100730 China.

Background: Increased extravascular lung water (EVLW) in shock is common in the critically ill patients. This study ai explore the effect of cardiac output (CO) on EVLW and its relevant influence on prognosis. Methods: The hemodynamic data of 428 patients with pulse-indicated continuous CO catheterization from Department of Critical Care Medicine, Peking Union Medical College Hospital were retrospectively collected and analyzed. The patients were assigned to acute respiratory distress syndrome group, cardiogenic shock group, septic shock group, and combined shock (cardiogenic and septic) group according to their symptoms. Information on 28-day mortality and renal function was also collected. Results: The CO and EVLW index (EVLWI) in the cardiogenic and combined shock groups were lower than those in the other groups (acute respiratory distress syndrome group vs. cardiogenic shock group vs. septic shock group vs. combined shock group: CO, 5.1 [4.0, 6.2] vs. 4.7 [4.0, 5.7] vs. 5.5 [4.3, 6.7] vs. 4.6 [3.5, 5.7] at 0 to 24 h, P=0.009;4.6 [3.8, 5.6] vs. 4.8 [4.1, 5.7] vs. 5.3 [4.4, 6.5] vs. 4.5 [3.8, 5.3] at 24 to 48 h, P=0.048;4.5 [4.1, 5.4] vs. 4.8 [3.8, 5.5] vs. 5.3 [4.0, 6.4] vs. 4.0 [3.2, 5.4] at 48 to 72 h, P=0.006;EVLWI, 11.4 [8.7,19.1] vs. 7.9 [6.6,10.0] vs. 8.8 [7.4,11.0] vs. 8.2 [6.7,11.3] at 0 to 24 h, P 0.05). In addition, there was no significant difference in tissue perfusion or renal function among the four groups during the observation period (P>0.05). However, the cardiogenic shock grou

关键词： Extravascular lung water Cardiac output Tissue perfusion Organ function Prognosis

Noble-metal-free cobalt hydroxide nanosheets for efficient electrocatalytic oxidation

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Frontiers of Chemical Science and Engineering 2020年第6期14卷 948-955页

作者： Jie Lan Daizong Qi Jie Song Peng Liu Yi Liu Yun-Xiang Pan Institute of Nano Biomedicine and Engineering Shanghai Engineering Research Centre for Intelligent Diagnosis and Treatment InstrumentDepartment of Instrument Science and EngineeringSchool of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai 200240China

Cobalt hydroxide has been emerging as a promising catalyst for the electrocatalytic oxidation reactions,including the oxygen evolution reaction(OER)and glucose oxidation reaction(GOR).Herein,we prepared cobalt hydroxide nanoparticles(CoHP)and cobalt hydroxide nanosheets(CoHS)on nickel foam.In the electrocatalytic OER,CoHS shows an overpotential of 306 mV at a current density of 10 mA·cm^-2.This is enhanced as compared with that of CoHP(367 mV at 10 mA·cm^-2).In addition,CoHS also exhibits an improved performance in the electrocatalytic GOR.The improved electrocatalytic performance of CoHS could be due to the higher ability of the two-dimensional nanosheets on CoHS in electron transfer.These results are useful for fabricating efficient catalysts for electrocatalytic oxidation reactions.

关键词： electrocatalytic oxidation cobalt hydroxide nanosheet water glucose

Effects of hydroxyl group on H_2 dissociation on graphene:A density functional theory study

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Journal of Energy Chemistry 2013年第3期22卷 493-497页

作者： Ning Wang Likun Wang Qinggang Tan Yun-Xiang Pan College of Materials Science and Engineering Key Laboratory for Advanced Civil Engineering Materials(Ministry of Education)Tongji University

Graphene-based materials are promising for hydrogen production and storage. In this work, using density functional theory calculations, we explored how a hydroxyl group influences H2 dissociation on graphene. Presence of the hydroxyl group makes the binding of H atom with graphene stronger, as the binding energy of H atom with the hydroxyl-modified graphene is higher than that with the pristine graphene. The para-site is the most favorable site for H2 dissociation on both the pristine and hydroxyl-modified graphene. The energy barrier of H2 dissociation at para-site on the pristine graphene is 3.10 eV whereas that on the hydroxyl-modified graphene is 2.46 eV, indicating a more facile H2 dissociation on the hydroxyl-modified graphene.

关键词： graphene hydroxyl H2 dissociation hydrogen transfer density functional theory

Automatic Detection of Aortic Dissection Based on Morphology and Deep Learning

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Computers, Materials & Continua 2020年第3期62卷 1201-1215页

作者： yun Tan Ling Tan Xuyu xiang Hao Tang Jiaohua Qin Wenyan pan College of Computer Science and Information Technology Central South University of Forestry&TechnologyChangsha410114China The Second xiangya Hospital of Central South University Changsha410011China

Aortic dissection(AD)is a kind of acute and rapidly progressing cardiovascular disease.In this work,we build a CTA image library with 88 CT cases,43 cases of aortic dissection and 45 cases of health.An aortic dissection detection method based on CTA images is proposed.ROI is extracted based on binarization and morphology opening operation.The deep learning networks(InceptionV3,ResNet50,and DenseNet)are applied after the preprocessing of the datasets.Recall,F1-score,Matthews correlation coefficient(MCC)and other performance indexes are investigated.It is shown that the deep learning methods have much better performance than the traditional method.And among those deep learning methods,DenseNet121 can exceed other networks such as ResNet50 and InceptionV3.

关键词： Aortic dissection detection morphology DenseNet

Early initiation renal replacement therapy for fluid management to reduce central venous pressure is more conducive to renal function recovery in patients with acute kidney injury

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Chinese Medical Journal 2019年第11期132卷 1328-1335页

作者： Zhi-Qun Xing Da-Wei Liu Xiao-Ting Wang yun Long Hong-Min Zhang pan pan Long-xiang Su Department of Critical Care Medicine Peking Union Medical College Hospital Peking Union Medical College Chinese Academy of Medical Sciences Beijing 100730 China

Background:Acute kidney injury (AKI) is a serious complication in critically ill patients with septic shock treated in the intensive care unit. Renal replacement therapy (RRT) is a treatment for severe AKI;however, the time of initiation of RRT and factors that affect the recovery of kidney function remains unclear. This study was to explore whether early initiation of RRT treatment for fluid management to reduce central venous pressure (CVP) can help to improve patients5 kidney function recovery. Methods: A retrospective analysis of septic patients who had received RRT treatment was conducted. Patients received RRT either within 12 h after they met the diagnostic criteria of renal failure (early initiation) or after a delay of 48 h if renal recovery had not occurred (delayed initiation). Parameters such as patients5 renal function recovery at discharge, fluid balance, and levels of CVP were assessed. Results: A total of 141 patients were eligible for enrolment: 40.4% of the patients were in the early initiation group (57 of 141 patients), and 59.6% were in the delayed initiation group (84 of 141 patients). There were no significant differences in the characteristics at baseline between the two groups, and there were no differences in 28-day mortality between the two groups (χ^2 = 2.142, P = 0.143);however, there was a significant difference in the recovery rate of renal function between the two groups at discharge (χ^2 = 4.730, P < 0.001). More importantly, early initiation of RRT treatment and dehydration to reduce CVP are more conducive to the recovery of renal function in patients with AKI. Conclusion: Compared with those who received delayed initiation RRT, patients who received early-initiation RRT for dehydration to reduce CVP have enhanced kidney function recovery.

关键词： Sepsis Acute kidney injury Renal replacement therapy Central venous pressure