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5兆瓦级V型浮式风机平台设计及稳性分析

舰船科学技术 2024年第2期46卷 106-112页

作者：沈勇刘传艺潘伟宸李娅杰王希坤中船澄西船舶修造有限公司江苏江阴214400 江苏大学江苏镇江212013

基于静力学原理和规范要求,设计了一种搭载NREL 5 MW风机的V型半潜式平台,计算并验证了其结构完整稳性。结果表明平台设计优良合理,在工作工况和自存工况的各个倾斜轴下均能保证足够的结构稳性。自存工况时平台的最小许用重心高度为12.2... 详细信息

基于静力学原理和规范要求,设计了一种搭载NREL 5 MW风机的V型半潜式平台,计算并验证了其结构完整稳性。结果表明平台设计优良合理,在工作工况和自存工况的各个倾斜轴下均能保证足够的结构稳性。自存工况时平台的最小许用重心高度为12.2 m,而实际重心高度为9.4 m,并未超出许用限值。值得注意的是,30°倾斜轴为平台危险轴,此时稳性相对较差,需要注意平台在此倾斜轴下的横倾运动。

关键词： V型浮式风机半潜式海洋平台完整稳性许用重心高度

Magnetizations of Multisublattice Bilayer System

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Communications in Theoretical Physics 2008年第4期49卷 1055-1058页

作者： JIANG Wei LIU Chuan wang Wei ZHANG Fan LIU Cong wang xi-kun College of Sciences Shenyang University of Technology Shenyang 110023 China

Magnetizations of four sublattice bilayer system have been systematically investigated by the use of effectivefield theory with self-spin correlations and differential operator technique. The effects of the crystal field, longitudinal magnetic field, and intra- and inter-monolayer interaction constants on magnetizations axe examined in detail. Some interesting results are obtained, which may potentially be related to experimental work.

关键词： four sublattices magnetizations effective-field theory

基于AQWA的新型10 MW浮式平台运动响应分析

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舰船科学技术 2024年第7期46卷 93-97页

作者：潘伟宸刘健沈勇刘传艺李娅杰王希坤中船澄西扬州船舶有限公司江苏扬州225200 中船澄西船舶修造有限公司江苏无锡214433 江苏大学流体机械工程技术研究中心江苏镇江212013

随着海上风机由近海进入深海,低功率的风机不再满足海上发电需求,需要设计出新的海上浮式平台来支撑更大功率的风机。基于频域与时域的分析方法,运用AQWA软件,对一种新型10 MW浮式平台在风、浪、流联合作用下的水动力性能进行研究。通... 详细信息

随着海上风机由近海进入深海,低功率的风机不再满足海上发电需求,需要设计出新的海上浮式平台来支撑更大功率的风机。基于频域与时域的分析方法,运用AQWA软件,对一种新型10 MW浮式平台在风、浪、流联合作用下的水动力性能进行研究。通过对不同浪向角下幅值响应算子(RAO)、附加质量、运动响应以及系泊张力的计算,结果表明,平台垂荡、横摇和纵摇的固有周期可以有效避开海上波浪能量集中的周期范围;在极限工况下纵荡、纵摇以及垂荡的最值分别为16.83 m、11.81°以及-6.213 m,说明有着良好的运动性能;系泊缆的安全系数为1.92,于允许安全系数1.67,能够保证平台安全运行。

关键词：漂浮式海上平台幅值响应算子附加质量运动响应

Effective-Field Theory on High Spin Systems with Biaxial Crystal Field

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Communications in Theoretical Physics 2006年第6X期46卷 1105-1108页

作者： JIANG Wei GUO An-Bang LI xin wang xi-kun BAI Bao-Dong College of Sciences Shenyang University of Technology Shenyang 110023 China School of Electrical Engineering Shenyang University of Technology Shenyang 110023 China

Based on the effective-field theory with self-spin correlations and the differential operator technique, physical properties of the spin-2 system with biaxial crystal field on the .simple cubic, body-centered cubic, as well as faced-centered lattice have been studied. The influences of the external longitudinal magnetic field on the magnetization, internal energy, specific heat, and susceptibility have been discussed in detail The phenomenon that the magnetization in the ground state shows quantum effects produced by the biaxial transverse crystal field has been found.

关键词： effective-field theory magnetic properties biaxial crystal field quantum effects

Impact of Electronic Wastes Recycling on Environmental Quality

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Biomedical and Environmental Sciences 2006年第2期19卷 137-142页

作者： JIAN-PING wang xi-kun GUO College of Science Shantou University Shantou 515041 Guangdong China

Objective To evaluate the environmental quality of Guiyu, Guangdong impacted by the electronic waste recycling industry. Methods The surface water, ground water and sediment samples taken separately from two sites that recycle E-wastes and other rubbish relevant to the E-waste recycling, and an agricultural area, were analyzed, and the data were used to evaluate the impact of E-waste recycling on the environmental quality of Guiyu based on environmental quality standards in China. Results The concentrations of lead and iron in the surface water samples significantly different in the three locations. The maximum value of lead in the first site was 8 times higher than the threshold of environmental quality standards for surface water. The concentration of iron in polluted sample was 22 times that of the background sample. Manganese and iron also showed a significant difference in ground water samples between the three sites. The amount of iron was 22 times that of the threshold of the quality standard for ground water, and 120 times that of the background sample. Moreover, the results of all the eight heavy metals showed significant differences among the sediment samples. The concentrations of copper, cadmium, nickel, and lead in the polluted samples were above the median benchmarks of National Oceanic and Atmospheric Administration （NOAA）. The copper concentration of 2670 mg/kg was 10 times that of the median benchmark. Conclusion E-waste recycling has led to the severe pollution Guiyu.

关键词： Electronic waste recycling Environmental quality impact evaluation

Highly enhanced thermoelectric and mechanical performance of copper sulfides via natural mineral in-situ phase separation

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Journal of Advanced Ceramics 2024年第5期13卷 641-651页

作者： xi Yan Hongjiang Pan Yixin Zhang Tianyu Yang Yangwei wang kun Huang Chongyu wang Jing Feng Zhenhua Ge Faculty of Materials Science and Engineering Kunming University of Science and TechnologyKunming 650093China

In situ phase separation precipitates play an important role in enhancing the thermoelectric properties of copper sulfides by suppressing phonon *** this study,Cu1.8S composites were fabricated by melting reactions and spark plasma *** complex structures,namely,micron-PbS,Sb_(2)S_(3),nano-FeS,and multiscale pores,originate from the introduction of FePb_(4)Sb_(6)S_(14)into the Cu1.8S *** effective element(Fe)doping and multiscale precipitates,the Cu_(1.8)S+0.5 wt%FePb_(4)Sb_(6)S_(14)bulk composite reached a high dimensionless figure of merit(ZT)value of 1.1 at 773 ***,the modulus obtained for this sample was approximately 40.27 GPa,which was higher than that of the pristine *** study provides a novel strategy for realizing heterovalent doping while forming various precipitates via in situ phase separation by natural minerals,which has been proven to be effective in improving the thermoelectric and mechanical performance of copper sulfides and is worth promoting in other thermoelectric systems.

关键词： in situ precipitates jamesonite natural mineral thermoelectric copper sulfides

Myotis bat STING attenuates aging-related inflammation in female mice

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Zoological Research 2024年第5期45卷 961-971页

作者： xi wang Jing-kun Jia Qi wang Jing-Wen Gong Ang Li Jia Su Peng Zhou Wuhan Institute of Virology Chinese Academy of SciencesWuhanHubei 430071China Guangzhou National Laboratory Guangzhou International Bio IslandGuangzhouGuangdong 510005China University of Chinese Academy of Sciences Beijing 100000China State Key Laboratory of Respiratory Disease First Affiliated Hospital of Guangzhou Medical SchoolGuangzhouGuangdong 510005China

Bats,notable as the only flying mammals,serve as natural reservoir hosts for various highly pathogenic viruses in humans(e.g.,SARS-CoV and Ebola virus).Furthermore,bats exhibit an unparalleled longevity among mammals relative to their size,particularly the Myotis bats,which can live up to 40 ***,the mechanisms underlying these distinctive traits remain incompletely *** our prior research,we demonstrated that bats exhibit dampened STING-interferon activation,potentially conferring upon them the capacity to mitigate virus-or aging-induced *** substantiate this hypothesis,we established the first in vivo bat-mouse model for aging studies by integrating Myotis davidii bat STING(MdSTING)into the mouse *** monitored the genotypes of these mice and performed a longitudinal comparative transcriptomic analysis on MdSTING and wild-type mice over a 3-year aging *** transcriptomic analysis indicated a reduction in aging-related inflammation in female MdSTING mice,as evidenced by significantly lower levels of pro-inflammatory cytokines and chemokines,immunopathology,and neutrophil recruitment in aged female MdSTING mice compared to aged wild-type mice in *** results indicated that MdSTING knock-in attenuates the aging-related inflammatory response and may also improve the healthspan in mice in a sex-dependent *** the underlying mechanism awaits further study,this research has critical implications for bat longevity research,potentially contributing to our comprehension of healthy aging in humans.

关键词： Bat STING Longevity Aging-related inflammation Virus reservoir host

PIV and its application in hydrodynamics of cylindrical structures

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PIV and its application in hydrodynamics of cylindrical stru...

Artificial synthesis of polyesters at ambient condition via consecutive CO_(2)electrolysis and fermentation

第二十九届全国水动力学研讨会

作者： wang xi-kun Maritime Research Centre Nanyang Technological University National Research Center of Pumps Jiangsu University

During the past three decades,Particle image velocimetry(PIV) has evolved rapidly to be the dominant method in experimental fluid mechanics and has contributed to many advances in our understanding of turbulent and complex *** this paper,we provide a brief review the achievements of PIV and its latest developments:e.g.,time-resolved PIV;statistical PIV;tomographic *** the actual implementation of PIV,however,there are a lot of pitfalls that may lead to inaccurate or even erroneous ***,we compile our knowledge and experience about PIV accumulated over past years,and provide some practical guidelines for its implementation in practice to obtain accurate *** paper focuses on the application of PIV in investigating the hydrodynamics of cylindrical structures,since it is fundamental in many engineering applications such as heat exchange tubes,transmission lines,piers,pipelines,risers.A wide range of flow configurations are considered,including:(a) a cylinder(circular/square) placed in proximity to a wall boundary;(b) two tandem cylinders(circular/square) placed in proximity to a wall boundary;(c) multiple cylinder arrays;(d) cylinders with rough surface for drag reduction;(e) cylinder undergoing vortex-induced vibration(VIV);and so on.

关键词： Particle image velocimetry(PIV) Hydrodynamics of cylindrical structures Vortex-induced vibration(VIV)

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Nano Research 2024年第7期17卷 6016-6025页

作者： Guiru Zhang Ning Ji Shiheng Lyu Baoxin Ni Peng Shen Ke Ye Yuting wang Xuheng Jiang Hai Zhang xi Liu Yongcheng wang kun Jiang Department of Laboratory Medicine of The First Affiliated Hospital&Liangzhu Laboratory Zhejiang University School of MedicineHangzhou 310058China Interdisciplinary Research Center School of Mechanical EngineeringShanghai Jiao Tong UniversityShanghai 200240China In-situ Centre for Physical Sciences Frontiers Science Center for Transformative MoleculesSchool of Chemistry and Chemical EngineeringShanghai Jiao Tong UniversityShanghai 200240China

Electrochemically converting CO_(2)into value-added chemicals is a promising approach to mitigate anthropogenic carbon emissions,yet largely limited to short-chained C_(1)–C_(3)***,we demonstrate a tandem artificial synthesis of biodegradable polyhydroxybutyrate(PHB)plastic from CO_(2)building *** synthesis of defects-enriched Bi catalyst is firstly demonstrated by plasma bombardment and following in situ electrochemical reduction,which delivers a HCOOH Faradaic efficiency above 80%at tunable concentration from 2 to 250 mM,an energy efficiency up to 41%,and a single-pass carbon conversion efficiency up to 60%.Annular dark field and second electron microscopic analysis,density functional theory(DFT)calcualtions,coupled with H-type and solid-state electrolyzer assessments,point out the vital role of defective and/or stepped Bi surface sites in promoting CO_(2)-to-HCOOH ***,as-synthesized high-purity HCOOH is used as the sole carbon source for C-chain growth within microbial fermentation reactor with Ralstonia eutropha,where activated formate dehydrogenase and increased metabolites related to Calvin–Benson–Bassham cycle are found to be responsible for the enhanced polyester accumulation.

关键词： CO_(2)electrolysis Bi catalyst vacancy site formic acid fermentation