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Biochar 2024年第1期6卷 1143-1156页

作者： Licheng Ji Zhongpu Yu qi cao Xiangyang Gui Xingjun Fan Chengcheng Wei Fei Jiang Jie Wang Fanbin Meng Feiyue Li Jianfei Wang College of Resources and Environment Science Anhui Science and Technology UniversityFengyang 233100China. School of Environmental Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China. Anhui Province Agricultural Waste Fertilizer Utilization and Cultivated Land Quality Improvement Engineering Research Center Chuzhou 233100China.

Hydrothermal carbonization(HTC)has been regarded as a promising technique for turning wet biomass into hydrochar due to its low energy consumption,low exhaust gas emissions,*** addition,hydrochar is an important source of dissolved organic matter(DOM),which plays a crucial part in the migration and destiny of pollutants in the environmental ***,there are limited studies that focus on the factors that influence the formation of DOM in hydrochar,such as hydrothermal ***,the current study comprehensively characterized the optical properties of DOM within hydrochar derived from sawdust(HDOM)under different hydrothermal temperatures(150-300℃)by Ultraviolet-visible(UV-Vis)and fluorescence spectroscopy,as well as its complexation characteristic with Cu(II).The findings revealed that the organic carbon content of HDOM reached a peak of 37.3 mg L^(−1)when the temperature rose to 240℃and then decreased as the temperature ***-Vis spectroscopy analysis showed that the absorption capacity of HDOM at 275 nm increases with temperature and reaches a maximum value at 240℃,indicating that high temperature promotes the formation of monocyclic aromatic *** temperature enhances the aromaticity,hydrophobicity,and humification degree of HDOM,thus improving its stability and *** E3/E4 ratios are all greater than 3.5,confirming that the main component of HDOM is fulvic acid,which corresponds to 3D-EEM and Pearson’s correlation coefficient *** humification index(HIX)of HDOM increased with the rise in hydrothermal temperature(150-240℃),as observed by the three-dimensional excitation-emission matrix spectroscopy(3D-EEMs).After reaching its peak at 240℃,the HIX value gradually dropped in line with the trend of the DOC ***,the bioavailability(BIX)value of DOM was all high and greater than 1,indicating all the HDOM are readily *** microbial humic substances(C1 and C4),a humic-like substance(C2),and a

关键词： Hydrochar Hydrothermal temperature Dissolved organic matter EEM-PARAFAC Metal complex

ITER装置中等离子体旋转和反馈控制对电阻壁模影响的数值研究

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物理学报 2021年第4期70卷 270-277页

作者：曹琦琦刘悦王硕大连理工大学物理学院三束材料改性教育部重点实验室大连116024 核工业西南物理研究院成都610041

在托卡马克等离子体中,电阻壁模是非常重要的磁流体不稳定性,特征时间在毫秒量级.对长时间稳态运行下的先进托卡马克,电阻壁模限制着聚变装置的运行参数空间(放电时间和比压),影响经济效益,所以研究电阻壁模稳定性至关重要.本文使用MAR... 详细信息

在托卡马克等离子体中,电阻壁模是非常重要的磁流体不稳定性,特征时间在毫秒量级.对长时间稳态运行下的先进托卡马克,电阻壁模限制着聚变装置的运行参数空间(放电时间和比压),影响经济效益,所以研究电阻壁模稳定性至关重要.本文使用MARS程序,针对ITER装置上9 MA先进运行平衡位形,研究了等离子体旋转和反馈控制对电阻壁模的影响.结果表明,在没有反馈控制时,当比压参数Cβ取0.7,等离子体环向旋转频率达到1.1%的阿尔芬频率时,可以完全稳定电阻壁模;在等离子体环向旋转和反馈控制共同作用时,比压参数Cβ取0.7,反馈增益|G|取0.6时,稳定电阻壁模所需要的等离子体旋转频率为0.2%的阿尔芬频率.可见,单独靠等离子体环向旋转稳定电阻壁模所需的旋转频率较大;而等离子体环向旋转和反馈控制共同作用可以降低稳定电阻壁模的旋转频率临界值,符合先进托卡马克的运行.本文的研究结果对中国聚变工程试验堆CFETR的工程设计和运行具有一定指导意义.

关键词：电阻壁模等离子体环向旋转反馈控制

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红外弱小目标检测中的特征选择性滤波方法

光学学报 2009年第9期29卷 2408-2412页

作者：曹琦毕笃彦空军工程大学工程学院信号与信息处理实验室陕西西安710038

针对红外图像弱小目标检测中的预处理问题,提出了一种特征选择性滤波方法(CSF),该方法创造性地将各向异性滤波应用到图像空域,通过分析红外图像中不同特征区域的特性,改进了系数分布函数,使CSF在消除背景、平滑边缘的同时,增强目标信号... 详细信息

针对红外图像弱小目标检测中的预处理问题,提出了一种特征选择性滤波方法(CSF),该方法创造性地将各向异性滤波应用到图像空域,通过分析红外图像中不同特征区域的特性,改进了系数分布函数,使CSF在消除背景、平滑边缘的同时,增强目标信号。最后给出了该方法的滤波特性分析和实验结果,并与其他滤波方法做了比较。实验结果表明该方法具有良好的背景抑制和目标增强性能,且结构简单,有利于实时实现。

关键词：图像处理特征选择性滤波器各向异性滤波小目标检测

基于视觉和里程计信息融合的移动机器人自定位

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机器人 2006年第3期28卷 344-349页

作者：罗真曹其新上海交通大学机器人研究所上海200030

受鸽子定向启发,将装备有全维视觉和里程计等传感器的自主移动机器人的自定位分为两种模式:全维视觉定位模式和里程计定位模式.机器人依据一定准则选择具体的主导定位模式:先试视觉定位,若视觉定位不可得或获得的视觉定位不可靠,则采用... 详细信息

受鸽子定向启发,将装备有全维视觉和里程计等传感器的自主移动机器人的自定位分为两种模式:全维视觉定位模式和里程计定位模式.机器人依据一定准则选择具体的主导定位模式:先试视觉定位,若视觉定位不可得或获得的视觉定位不可靠,则采用里程计定位.针对标记物信息失真问题,应用初步视觉定位结果反推标记物理论值,然后通过比较从原始图像中分离出的可能的标记物信息和反推出来的标记物信息理论值,滤除不可靠的视觉定位.针对运动过程中的机器人自定位,分析了影响定位准确性的信息时间延迟因素.

关键词：自定位移动机器人全维视觉里程计

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基于短期预测的追捕方法

上海交通大学学报 2006年第7期40卷 1069-1073,1078页

作者：罗真曹其新上海交通大学机器人研究所上海200030

针对具有安全区的追捕逃避问题,抛开参与人是否理性的假设,提出了一种基于短期预测的追捕方法.由参与人短期内状态空间有限和伪蒙特卡罗方法原理阐述了进行短期预测的可行性.追捕方法的流程为:追捕方先根据物理条件限制预测双方的短期状... 详细信息

针对具有安全区的追捕逃避问题,抛开参与人是否理性的假设,提出了一种基于短期预测的追捕方法.由参与人短期内状态空间有限和伪蒙特卡罗方法原理阐述了进行短期预测的可行性.追捕方法的流程为:追捕方先根据物理条件限制预测双方的短期状态;根据反映对抗态势的特征计算出对手处于某状态时自身某状态的收益,并由此进一步获得针对同时刻对手各个状态的自身某状态的综合收益;估算出自身各个预测状态的综合收益后,选取某个状态作为短期目标,执行能到达该状态的行为.结合足球机器人一对一对抗的实践进行了仿真,结果表明该方法有效.介绍了在自主式足球机器人上应用基于短期预测的追捕方法的初步实验,证实该方法具有一定的实际应用价值.

关键词：追捕-逃避短期预测收益函数伪蒙特卡罗

Piezochromic luminescence and aggregation induced emission of 9,10-bis[2-(2-alkoxynaphthalen-1-yl)vinyl]anthracene derivatives

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Chinese Chemical Letters 2017年第7期28卷 1485-1491页

作者： Xin-Yu Teng Xing-Chun Wu Yu-qi cao Yue-Hua Jin Yang Li Xi-Long Yan Bo-Wei Wang Li-Gong Chen School of Chemical Engineering and Technology Tianjin UniversityTianjin 300350China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Tianjin 300072China Tianjin Bohai Fine Chemical Co. Ltd.Tianjin 300072China Tianjin Engineering Research Center of Functional Fine Chemicals Tianjin 300072China

Four derivatives of 9,10-bis[2-（2-alkoxynaphthalen-1-yl）vinyl]anthracene（BNAs） were designed,successfully synthesized and characterized by spectrofluorometer, powder wide-angle X-ray diffraction（PXRD） and differential scanning calorimetry experiments（DSC）, etc. It was found that these compounds exhibited aggregation-induced emission phenomenon. Moreover, these target compounds displayed reversible color change from yellow to orange upon pressing and annealing process. Interestingly, all of BNAs obviously presented red-shifted piezofluorochromic（PFC） properties and behaved mainly length dependence of alkoxy group, in which, BNA displayed the largest PFC spectral shift（DlPFC= 26 nm）. The PXRD profiles demonstrated the transformation from crystalline to amorphous state upon grinding, and the mechanism of PFC behaviors was proposed. Thus, changing the length of alkoxyl chain could be an alternative way to tune their PFC behaviors.

关键词： 9 10-Divinylanthracenes Piezofluorochromic Aggregation induced emission Alkoxyl-length dependent Stimuli-responsive material

Efficacy of rituximab therapy in children with refractory nephrotic syndrome:a prospective observational study in Shanghai

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World Journal of Pediatrics 2014年第1期10卷 59-63页

作者： Li Sun Hong Xu qian Shen qi cao Jia Rao Hai-Mei Liu Xiao-Yan Fang Li-Jun Zhou Department of Nephrology and Rheumatology Children's Hospital of Fudan UniversityShanghai 201102China

Background:Idiopathic nephrotic syndrome is the most common glomerular disease in *** study was undertaken to observe the efficacy and side-effects of rituximab(RTX)in treating children with different types of refractory primary nephrotic ***:Twelve patients with steroid dependent nephrotic syndrome(SDNS),frequently relapsing nephritic syndrome(FRNS),and steroid resistant nephrotic syndrome(SRNS)were enrolled in our *** were obvious drug side-effects,and proteinuria remained difficult to *** was administered at a dose of 375 mg/m2 body surface area,once or twice ***:The male to female ratio was 3:1,and the onset age was 1.6–8.9 *** were 9 patients with steroid sensitive nephrotic syndrome(SDNS or FRNS),and 3 patients with *** were 7 patients with minimal change disease(MCD),3 patients with focal segmental glomerular sclerosis(FSGS),1 with focal proliferative glomerulonephritis,and 1 without renal *** total effective treatment rate of RTX was 91.67%,and for 77.78%of the patients,steroid dosage could be *** months before and after RTX infusion,the mean steroid dosage was significantly decreased(P=0.014)and the recurrence number was significantly reduced(P<0.001).The results were better in MCD patients than in FSGS patients(P=0.045).There was no significant difference between FRNS/SDNS and SRNS patients(P=0.175).During RTX administration,3 patients developed skin rashes,1 developed hypotension,and 1 developed a *** patient experienced a persistent decrease in serum immunoglobulin level but without serious ***:RTX was effective in the treatment of refractory nephrotic syndrome,and it could significantly reduce the use of steroid and immunosuppressants.

关键词： refractory nephritic syndrome rituximab

Hepatic progenitor cell activation in liver repair

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Liver Research 2017年第2期1卷 81-87页

作者： Adam Bria Jorgensen Marda Junmei Zhou Xiaowei Sun qi cao Bryon E.Petersen Liya Pi Pediatric Stem Cell Research and Hepatic Disorders Child Health Research InstituteDepartment of PediatricsUniversity of FloridaGainesvilleFLUSA

The liver possesses an extraordinary ability to regenerate after ***-driven liver regeneration is the default pathway in response to mild-to-moderate acute liver *** replication of mature hepatocytes is blocked,facultative hepatic progenitor cells(HPCs),also referred to as oval cells(OCs)in rodents,are ***/OCs have the ability to proliferate clonogenically and differentiate into several lineages including hepatocytes and bile ductal *** is a conserved liver injury response that has been studied in many species ranging from mammals(rat,mouse,and human)to *** addition,improper HPC/OC activation is closely associated with fibrotic responses,characterized by myofibroblast activation and extracellular matrix production,in many chronic liver *** remodeling and metalloprotease activities play an important role in the regulation of HPC/OC proliferation and fibrosis ***,understanding molecular mechanisms underlying HPC/OC activation has therapeutic implications for rational design of anti-fibrotic therapies.

关键词： Liver regeneration Hepatic progenitor cells(HPCs) Oval cells(OCs) Liver injury Hepatic fibrosis

Grand Research Plan for Neural Circuits of Emotion and Memory-Current status of neural circuit studies in China

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Neuroscience Bulletin 2013年第1期29卷 121-124页

作者： Yuan-Gui Zhu He-qi cao Er-Dan Dong Department of Health Sciences National Natural Science Foundation of China

During recent years, major advances have been made in neuroscience, i.e., asynchronous release, three-dimensional structural data sets, saliency maps, magnesium in brain research, and new functional roles of long non-coding RNAs. Especially, the development of optogenetic technology provides access to important information about relevant neural circuits by allowing the activation of specific neurons in awake mammals and directly observing the resulting behavior. The Grand Research Plan for Neural Circuits of Emotion and Memory was launched by the National Natural Science Foundation of China. It takes emotion and memory as its main objects, making the best use of cutting-edge technologies from medical science, life science and information science. In this paper, we outline the current status of neural circuit studies in China and the technologies and methodologies being applied, as well as studies related to the impairments of emotion and memory. In this phase, we are making efforts to repair the current deficiencies by making adjustments, mainly involving four aspects of core scientific issues to investigate these circuits at multiple levels. Five research directions have been taken to solve important scientific problems while the Grand Research Plan is implemented. Future research into this area will be multimodal, incorporating a range of methods and sciences into each project. Addressing these issues will ensure a bright future, major discoveries, and a higher level of treatment for all affected by debilitating brain illnesses.

关键词： neural circuits emotion and memory funding Grand Research Plan