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Chinese Journal of Polymer Science 2023年第1期41卷 117-128页

作者： Jian Liu zhuang nie Rui Qin An-Ping Ou Tao Zhang Xu Wang Xiang-Yang Liu College of Polymer Science and Engineering State Key Laboratory of Polymer Material and EngineeringSichuan UniversityChengdu610065China Zhejiang Key Laboratory of Marine Materials and Protective Technologies Key Laboratory of Marine Materials and Related TechnologiesCASNingbo315000China

The key to improve the foam’s performance is to optimize the cellular structure and its bulk-material ***,the hyperbranched polymer modified fluorinated multi-walled carbon nanotube(HPMCNT-F)based on the nucleophilic reactions of MCNT-F was successfully prepared and used to composite with PI *** pristine MCNT shows a poor dispersity and weak interfacial interaction with PI *** HPMCNT-F exhibits an excellent dispersity and effectively forms covalent/non-covalent interaction with PI matrix due to the surface-structure engineering,resulting in the enhancement of the PI ***,HPMCNT-F works as a heterogeneous nucleation agent in PI foam to optimize the cellular *** enhancement of PI bulk and the optimizing of cellular structure result in the increase of compressive special strength of composite foam by 58.9%with a low loading of 1.6 wt%***,the hyperbranched polymers effectively prevent the thermal conduction among HPMCNT-F,and the isolated MCNTs effectively block thermal radiation through absorption and reflection the infrared ***,the thermal conductivity was reduced by 8.0%simultaneously.

关键词： Foams Nanocomposites Mechanical properties Thermal properties

Diagnostic Value of 128-slice Spiral CT Combined with Virtual Colonoscopy for Colorectal Cancer

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Current Medical Science 2019年第1期39卷 146-152页

作者： Wen-juan TANG zhuang nie Wen-liang FAN Lan CHENG Zi-qiao LEI Ming YANG Department of Radiology Hubei Province Key Laboratory of Molecular ImagingUnion HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China

The objective of this study was to evaluate the diagnostic value of 128-slice spiral CT combined with virtual colonoscopy in diagnosis of colorectal *** retrospectively analyzed 45 patients of colorectal diseases who underwent definition AS+128-slice spiral CT combined with virtual colonoscopy after bowel preparation and gas injection to evaluate the clinical diagnostic value of this *** the patients received electronic colonoscopy and were confirmed by *** total,colorectal cancer was confirmed in 42 cases and inflammation in 3 *** results shows:there were 17 cases of lump,10 cases of infiltration,6 cases of ulcer,9 cases of mixed type,4 cases of liver metastases,and 36 cases of lymph node *** was no significant difference between 128-slice spiral CT combined with virtual colonoscopy and electronic colonoscopy in detection,localization and characterization of colorectal *** virtual endoscopy has great advantages in observing the invasion around the lesion and the presence or absence of metastasis in distant organs and lymph node *** is also possible to understand the shape of the lesion in the intestinal lumen and the length of the lesion involving the lumen of the intestine.

关键词： 128-slice spiral CT virtual endoscopy colorectal cancer

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氯胺酮对小鼠肺泡上皮液体清除作用的研究

中国药理学通报 2011年第9期27卷 1328-1329页

作者：崔湧聂宏光田阿勇聂状中国医科大学附属第一医院麻醉科辽宁沈阳110001 中国医科大学药学院药理学教研室辽宁沈阳110001

肺泡液体清除率（alveolarfluidclearance，Arc）对肺脏生理和病理状态下的液体平衡，如肺水肿、急性肺损伤和成人呼吸窘迫症，均起重要的调控作用。肺泡上皮细胞顶侧膜的上皮钠通道（epithelialsodiumchannel，ENaC）是影响ArC的主要... 详细信息

肺泡液体清除率（alveolarfluidclearance，Arc）对肺脏生理和病理状态下的液体平衡，如肺水肿、急性肺损伤和成人呼吸窘迫症，均起重要的调控作用。肺泡上皮细胞顶侧膜的上皮钠通道（epithelialsodiumchannel，ENaC）是影响ArC的主要决定因素…。氯胺酮是一种常用的静脉麻醉药，能抑制神经元和骨骼肌的电压门控性Na’通道旧0，其四聚体结构与ENaC相似。因此我们推测氯胺酮可能通过抑制ENaC而降低Arc。目前的研究已经证实B．受体激动剂能改善肺泡Na’和液体的重吸收，增加AFCl3J。本研究旨在探讨氯胺酮与AFC之间的关系，明确氯胺酮是否对肺泡上皮Na’转运有抑制作用，以及使用B一受体激动剂后能否拮抗氯胺酮对AFC的抑制作用。

关键词：氯胺酮肺水肿肺泡液体清除率阿米洛利钠通道 β2肾上腺素受体

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基于改进蚁群优化算法的AUV三维路径规划

智能系统学报 2024年第3期19卷 627-634页

作者：蒲兴成冼文杰聂壮重庆邮电大学计算机科学与技术学院重庆400065 铜陵学院数学与计算机学院安徽铜陵244061

针对蚁群算法在三维路径规划时收敛速度慢且难以收敛至最优的缺点,提出一种新的改进蚁群算法,并将其应用于自主式水下机器人(autonomous underwater vehicle,AUV)三维路径规划。与现有算法相比,改进算法优点主要体现在3个方面:首先,引... 详细信息

针对蚁群算法在三维路径规划时收敛速度慢且难以收敛至最优的缺点,提出一种新的改进蚁群算法,并将其应用于自主式水下机器人(autonomous underwater vehicle,AUV)三维路径规划。与现有算法相比,改进算法优点主要体现在3个方面:首先,引进伪随机状态转移概率提升算法全局搜索能力;其次,将距离和轨迹限定因子引入启发式函数,距离因子保证搜索不断趋近目标点,在轨迹限定因子约束下,轨迹累计转角更小,以此提升收敛速度和精度;最后,通过扩大信息素增量差距并逐步提高信息素衰减系数,进一步提高路径规划效率。实验结果表明,改进蚁群算法能够获得累计转角更小路径,且路径长度更小,收敛速度更快。

关键词：路径规划改进蚁群算法启发函数信息素更新收敛速度三维路径规划自主水下机器人转移概率

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基于体型特异性剂量估算值推算冠状动脉CT血管成像中患者器官剂量和个体有效剂量的可行性研究

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中华放射医学与防护杂志 2021年第10期41卷 778-783页

作者：聂壮雷子乔杨明余建明华中科技大学同济医学院附属协和医院放射科分子影像湖北省重点实验室武汉430022

目的探讨将体型特异性剂量估算值(SSDE)用于估算冠状动脉CT血管成像(CTA)中患者器官剂量和个体有效剂量的可行性。方法回顾性连续纳入冠状动脉CTA患者421例,均于第3代双源Force型CT采用前瞻性心电门控触发轴扫协议检查。通过Radimetric... 详细信息

目的探讨将体型特异性剂量估算值(SSDE)用于估算冠状动脉CT血管成像(CTA)中患者器官剂量和个体有效剂量的可行性。方法回顾性连续纳入冠状动脉CTA患者421例,均于第3代双源Force型CT采用前瞻性心电门控触发轴扫协议检查。通过Radimetrics计算患者水当量直径以计算每位患者的SSDE;使用Monte Carlo模拟估算患者扫描范围内器官的吸收剂量包括心脏、肺、肝和乳腺。使用国际放射防护委员会(ICRP)103报告的器官敏感加权系数,将患者主要敏感器官的剂量加权求和计算个体有效剂量。使用线性相关分析验证SSDE与器官剂量及个体有效剂量的相关性,并推导基于SSDE估算器官剂量和个体有效剂量的转换系数。使用平均差值比评价该估算方法的准确性。结果容积CT剂量指数(CTDIvol)为(16.8±8.7)mGy,SSDE为(20.8±8.8)mGy,个体有效剂量为(4.4±2.9)mSv。基于SSDE估算器官剂量的线性拟合公式为:心脏Y=1.2X-6.4(R^(2)=0.91,P<0.05,平均误差0.1%);乳腺Y=1.4X-7.4(R^(2)=0.91,P<0.05,平均误差7.9%);肺脏Y=0.89X-4.6(R^(2)=0.86,P<0.05,平均误差8.3%);肝脏Y=0.36X-1.8(R^(2)=0.64,P<0.05,平均误差-17.9%)。基于SSDE估算个体有效剂量的线性拟合公式为:男Y=0.21X-1.2(R^(2)=0.92,P<0.05,平均误差0.2%);女Y=0.39X-2.2(R^(2)=0.93,P<0.05,平均误差1.7%)。结论在冠状动脉CTA检查中通过SSDE和相应的转换系数可估算被照射器官吸收剂量和个体有效剂量,将有助于在临床工作中实现患者辐射剂量及风险的个性化评估和精准管理。

关键词：体型特异性剂量估算值 CT血管成像冠状动脉器官剂量个体有效剂量

New atom movement mechanism for tracking path on disordering AuCuI(A_8^(Au)A_4^(Cu)) compound

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Transactions of Nonferrous Metals Society of China 2014年第10期24卷 3221-3256页

作者：谢佑卿彭红建刘心笔李小波聂耀庄中南大学材料科学与工程学院长沙410083 中南大学粉末冶金研究院长沙410083 中南大学粉末冶金国家重点实验室长沙410083 中南大学化学化工学院长沙410083 湘潭大学材料科学与工程学院湘潭411105 中南大学物理与电子学院长沙410083

Taking experimental path on disordering AuCuI（AAuCu8A4）composed of A Au8 and ACu4 stem alloy genes as an example, three discoveries and a method were presented. The ability of Au Cu I（AAu Cu8 A4）to keep structure stabilization against changing temperature is attributed to the fact that the AAu8 and ACu4 potential well depths greatly surpass their vibration energies, which leads to the subequilibrium of experimental path. A new atom movement mechanism of AuCuI（AAuACu84）to change structure for suiting variation in temperature is the resonance activating-synchro alternating of alloy genes, which leads to heterogeneous and successive subequilibrium transitions. There exists jumping order degree, which leads to the existence of jumping Tj-temperature and an unexpected so-called ＂retro-effect＂ about jumping temperature retrograde shift to lower temperatures upon the increasing heating rate. A set of subequilibrium holographic network path charts were obtained by the experimental mixed enthalpy path method.

关键词： intermetallics alloy gene order/disorder transformation resonance activating-synchro alternating mechanism thermodynamic properties equilibrium and subequilibrium holographic network path charts

Holographic alloy positioning design system and holographic network phase diagrams of Au-Cu system

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Transactions of Nonferrous Metals Society of China 2015年第3期25卷 885-906页

作者：谢佑卿刘心笔李小波彭红建聂耀庄中南大学材料科学与工程学院长沙410083 中南大学粉末冶金研究院长沙410083 中南大学粉末冶金国家重点实验室长沙410083 湘潭大学材料科学与工程学院湘潭411105 中南大学化学化工学院长沙410083 中南大学物理与电子学院长沙410083

Taking Au?Cu system as an example, three discoveries and two methods were presented. First, a new way for boosting sustainable progress of systematic metal materials science (SMMS) and alloy gene engineering (AGE) is to establish holographic alloy positioning design (HAPD) system, of which the base consists of measurement and calculation center, SMMS center, AGE center, HAPD information center and HAPD cybernation center; Second, the resonance activating-sychro alternating mechanism of atom movement may be divided into the located and oriented diffuse modes; Third, the equilibrium and subequilibrium holographic network phase diagrams are blueprints and operable platform for researchers to discover, design, manufacture and deploy advanced alloys, which are obtained respectively by the equilibrium lever numerical method and cross point numerical method of isothermal Gibbs energy curves. As clicking each network point, the holographic information of three structure levels for the designed alloy may be readily obtained: the phase constitution and fraction, phase arranging structure and properties of organization; the composition, alloy gene arranging structure and properties of each phase and the electronic structures and properties of alloy genes. It will create a new era for network designing advanced alloys.

关键词： Au-Cu system holographic alloy positioning design system equilibrium and subequilibrium holographic network phase diagrams systematic metal materials science network designing advanced alloys

Alloy gene Gibbs energy partition function and equilibrium holographic network phase diagrams of Au_3Cu-type sublattice system

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Transactions of Nonferrous Metals Society of China 2015年第1期25卷 211-240页

作者：谢佑卿聂耀庄李小波彭红建刘心笔中南大学材料科学与工程学院长沙410083 中南大学粉末冶金研究院长沙410083 中南大学粉末冶金国家重点实验室长沙410083 中南大学物理与电子学院长沙410083 湘潭大学材料科学与工程学院湘潭411105 中南大学化学化工学院长沙410083

Taking Au3Cu-type sublattice system as an example, three discoveries have been presented. First, the fourth barrier to hinder the progress of metal materials science is that today’s researchers do not understand that the Gibbs energy function of an alloy phase should be derived from Gibbs energy partition function constructed of alloy gene sequence and their Gibbs energy sequence. Second, the six rules for establishing alloy gene Gibbs energy partition function have been discovered, and it has been specially proved that the probabilities of structure units occupied at the Gibbs energy levels in the degeneracy factor for calculating configuration entropy should be degenerated as ones of component atoms occupied at the lattice points. Third, the main characteristics unexpected by today’s researchers are as follows. There exists a single-phase boundary curve without two-phase region coexisting by the ordered and disordered phases. The composition and temperature of the top point on the phase-boundary curve are far away from those of the critical point of the Au3Cu compound; At 0 K, the composition of the lowest point on the composition-dependent Gibbs energy curve is notably deviated from that of the Au3Cu compounds. The theoretical limit composition range of long range ordered Au3Cu-type alloys is determined by the first jumping order degree.

关键词： Au3Cu compound Au3Cu-type sublattice system alloy gene Gibbs energy partition function equilibrium holographic network phase diagrams systematic metal materials science

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大规模风光接入下梯级水电站调度方式研究

水力发电学报 2022年第9期41卷 44-55页

作者：谭乔凤聂状闻昕丁紫玉张子仪河海大学水利水电学院南京210098

风光接入流域梯级水电系统联合打捆外送是解决新能源消纳难题的有效途径,但也使得传统面向单一水电系统的调度方式面临极大挑战。为此,本文系统研究大规模风光接入背景下梯级水电站在长期、日前和实时尺度上的调度方式,并以雅砻江流域... 详细信息

风光接入流域梯级水电系统联合打捆外送是解决新能源消纳难题的有效途径,但也使得传统面向单一水电系统的调度方式面临极大挑战。为此,本文系统研究大规模风光接入背景下梯级水电站在长期、日前和实时尺度上的调度方式,并以雅砻江流域锦官梯级多能互补调度为实例,系统评估互补调度效益和风险。结果表明:大规模风光接入背景下,大型水电站水库的中长期水位应提前并加深消落,以增加枯期发电量并减少汛期弃水;互补运行能提升系统调峰能力,且调节水电日出力过程可缓解外送通道竞争;充分发挥梯级水电站的联合调度作用,能分别在日前和实时尺度上对风光功率进行电力补偿调节,弥补风光预测不确定性导致的发电偏差,提高供电可靠性。

关键词：多能互补调度水库调度新能源调度方式多尺度嵌套

双层探测器光谱CT移植肾动脉成像最适虚拟单能量的临床研究

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中华放射学杂志 2022年第3期56卷 298-302页

作者：张兰聂壮范文亮喻杰孙文刚李欣杨帆华中科技大学同济医学院附属协和医院放射科分子影像湖北省重点实验室武汉430022

目的探讨双层探测器光谱CT虚拟单能量图像对移植肾动脉显示的最适能级。方法回顾性分析2020年6月至2021年4月在华中科技大学同济医学院附属协和医院因肾移植术后血压升高、肌酐升高或超声疑诊移植肾动脉狭窄而行双层探测器光谱CT移植肾... 详细信息

目的探讨双层探测器光谱CT虚拟单能量图像对移植肾动脉显示的最适能级。方法回顾性分析2020年6月至2021年4月在华中科技大学同济医学院附属协和医院因肾移植术后血压升高、肌酐升高或超声疑诊移植肾动脉狭窄而行双层探测器光谱CT移植肾动脉成像的患者16例。重建常规120 kVp混合能量图像(PI)和40~200 keV虚拟单能量图像(VMI)。对120 kVp PI和VMI的图像质量进行主观和客观评分,客观指标包括信噪比(SNR)、对比噪声比(CNR)。采用Spearman相关分析探索SNR、CNR与能级水平的相关性;SNR和CNR最高的VMI与其他各能级VMI及120 kVp PI间差异采用Wilcoxon符号秩检验分析。结果VMI的SNR和CNR与能级水平呈负相关(r=-0.86、-0.88,P均<0.001)。40 keV VMI的SNR[22.80(18.57,34.16)]和CNR[35.38(25.97,39.01)]最高,显著高于120 kVp PI和50~200 keV各能级VMI的SNR和CNR,差异具有统计学意义(P均<0.05)。40 keV VMI和120 kVp PI的容积再现图对移植肾动脉显示情况的主观评分分别为5(5,5)和4(3,5)分,基于40 keV VMI的评分显著高于120 kVp PI(Z=-2.60,P=0.009)。40 keV VMI与50、60、70 keV VMI的主观评分差异无统计学意义(Z=-1.00、-1.41、-1.73,P=0.317、0.157、0.083),而基于40 keV VMI的主观评分高于80~200 keV VMI的评分,且差异有统计学意义(P均<0.05)。结论双层探测器光谱CT移植肾动脉成像的最适能级为40 keV。

关键词：肾移植肾动脉体层摄影术,X线计算机图像质量虚拟单能量图像