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Multidisciplinary treatment of molten aluminum combined burn: An unusual case report

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Chinese Journal of Plastic and Reconstructive Surgery 2024年第3期 135-138页

作者： Shengzhou Shan Yinbo Peng Liqing Gong zhigang mao Weirong Yu Tao Ni Peng Xu Department of Plastic and Reconstructive Surgery Shanghai Ninth People's Hospital Shanghai Jiao Tong University School of Medicine

Molten aluminum is among the most common causes of burns in the metal industry. However, only few reports are available on molten aluminum injuries. Herein, we report an unusual case of molten aluminum burn. The patient had burns not only on the body surface but also in the respiratory tract and esophagus, adding to the difficulty of treatment. Multidisciplinary consultation and cooperation led to the development of a treatment plan for the patient, which included tracheotomy, respiratory management, endoscopic therapy, infection control, and psychological support. To our knowledge, this is the first report of molten aluminum-induced burns involving the face, neck, respiratory tract, esophagus, and eyes. We also describe our experience with multidisciplinary treatment for the management of molten aluminum burns.

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乌梁素海鱼类群落结构特征及其与环境因子的关系

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湖泊科学 2024年第5期36卷 1459-1469,I0014页

作者：姚禹佳毛志刚谷孝鸿王奕杨曾庆飞陈辉辉兰海今中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室南京210008 中国科学院南京地理与湖泊研究所湖泊与流域水安全重点实验室南京210008 中国科学院大学北京100049 内蒙古自治区乌梁素海生态保护中心巴彦淖尔051500

根据2021年周年野外调查数据与渔业捕捞历史资料,本文分析了乌梁素海湖区的鱼类群落结构变化特征及其与主要环境因子的关系。与历史资料相比,乌梁素海鱼类群落结构已经发生较大变化,表现为土著鱼类减少,优势种组成改变,鱼类群落结构呈... 详细信息

根据2021年周年野外调查数据与渔业捕捞历史资料,本文分析了乌梁素海湖区的鱼类群落结构变化特征及其与主要环境因子的关系。与历史资料相比,乌梁素海鱼类群落结构已经发生较大变化,表现为土著鱼类减少,优势种组成改变,鱼类群落结构呈现小型化。根据鱼类群落在湖中的分布特征,本研究将乌梁素海分为西部、东部和南部3个湖区。单因子相似性分析和相似性百分比分析结果显示,不同湖区间鱼类群落组成存在显著差异,两两湖区之间的平均差异性均在70%以上,且这种差异性主要由鲫、麦穗鱼和鲤造成。多样性的分析结果表明,全湖及各湖区鱼类群落的多样性指数较低(H′东部湖区>南部湖区。此外,Mantel test分析和典型相关分析表明,浊度和叶绿素a是目前影响乌梁素海鱼类群落结构的主要环境因子。各湖区间鱼类种群和多样性的差别在一定程度上反映出鱼类群落结构与湖泊环境特征相适应的特点。通过讨论鱼类群落结构变化及其空间分布特征,本文从不同角度对乌梁素海未来渔业管理规划提出可参考方向:1)重视禁渔休渔政策和人工增殖放流在乌梁素海的重要意义;2)充分利用鱼类群落与环境特征间的关系,尽可能通过改善鱼类群落结构促进水体营养物质循环。

关键词：渔业资源小型化优势种生物多样性环境因子多元统计分析乌梁素海

Implementation of Java Card Virtual Machine

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Journal of Computer Science & Technology 2000年第6期15卷 591-596页

作者：刘嵩岩毛志刚叶以正 Microelectronic Center Harbin Institute of Technology Harbin P.R. China

Java card is a new system for programming smart cards, which is based on the Java language and Virtual Machine. Java card programs (applets) run in Java Card Runtime Environment (JCRE) including the Java Card Virtual Machine (JCVM), the framework, the associated native methods and the API (Ap plication Programming Interface). JCVM is implemented as two separate pieces: off-card VM (Virtual Machine) and on-card VM. The stack model and heap memory structure used by on-card VM and exception handling are introduced. Because there airs limited resources within smart card environment, and garbage collection is not supported in JCVM, the preferred way to exception handling does not directly involve the use of throw, although the throw keyword is supported. Security is the most important feature of smart card. The Java card applet security feature is also discussed.

关键词： Java card JCRE JCVM security

Can whole steps of grain production be outsourced? Empirical analysis based on the three provinces of Jiangsu,Jilin,and Sichuan in China

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Journal of Integrative Agriculture 2024年第1期23卷 336-347页

作者： Jiacheng Liu Shengzhi mao Qiufen Zheng zhigang Xu School of Finance and Taxation Nanjing University of Finance and EconomicsJiangsu 210023China School of Economics Southwestern University of Finance and EconomicsSichuan 611130China School of Economics and Management Nanjing Agricultural UniversityJiangsu 210095China

Certain outsourcing services for agricultural management in China,such as pest control in grain production,have experienced prolonged sluggishness,contrasting with the relatively high level of outsourcing services observed in harvesting,land preparation,and *** study examines the feasibility of implementing whole-step outsourcing in grain production by conducting a case study of rice and maize production in Jiangsu,Jilin,and Sichuan provinces in *** provision of outsourcing services hinges on two essential conditions:technological advancements fostering specialized production and economies of scale,coupled with a market size sufficient to realize the aforementioned potential economies of *** results showed that outsourcing pest control or harvesting services had varying economies of *** outsourcing services in pest control were less common than in harvesting services,and their marginal growth space of the economies of scale with technological change was also *** by the operational characteristics of pest control itself,the market scale of its professional services is ***,achieving the whole-step outsourcing of grain production necessitates not only technological innovation but also effective policy interventions to overcome the constraints of market *** interventions include(1)optimizing crop layouts between planning regions and reducing land fragmentation and(2)supplying timely and effective inter-regional agricultural information for service providers aided by information technology.

关键词： outsourcing services economy of scale technical conditions market scale

A novel method for simulating nuclear explosion with chemical explosion to form an approximate plane wave: Field test and numerical simulation

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第6期16卷 2137-2153页

作者： Wei Ming Xiaojie Yang Yadong mao Xiang Wang Manchao He zhigang Tao College of Civil and Architecture Engineering North China University of Science and TechnologyTangshan063210China State Key Laboratory for Tunnel Engineering China University of Mining and Technology-BeijingBeijing100083China School of Mechanics and Civil Engineering China University of Mining and Technology-BeijingBeijing100083China

A nuclear explosion in the rock mass medium can produce strong shock waves,seismic shocks,and other destructive effects,which can cause extreme damage to the underground protection *** the increase in nuclear explosion power,underground protection engineering enabled by explosion-proof impact theory and technology ushered in a new *** paper proposes to simulate nuclear explosion tests with on-site chemical explosion tests in the form of multi-hole ***,the mechanism of using multi-hole simultaneous blasting to simulate a nuclear explosion to generate approximate plane waves was *** plane pressure curve at the vault of the underground protective tunnel under the action of the multi-hole simultaneous blasting was then obtained using the impact test in the rock mass at the *** to the peak pressure at the vault plane,it was divided into three regions:the stress superposition region,the superposition region after surface reflection,and the approximate plane stress wave zone.A numerical simulation approach was developed using PFC and FLAC to study the peak particle velocity in the surrounding rock of the underground protective cave under the action of multi-hole *** time-history curves of pressure and peak pressure partition obtained by the on-site multi-hole simultaneous blasting test and numerical simulation were compared and analyzed,to verify the correctness and rationality of the formation of an approximate plane wave in the simulated nuclear *** comparison and analysis also provided a theoretical foundation and some research ideas for the ensuing study on the impact of a nuclear explosion.

关键词： Approximate plane wave Multi-hole simultaneous blasting Chemical explosion Nuclear explosion Pressure sensor inclusion

Fusion of Ground-Based and Spaceborne Radar Precipitation Based on Spatial Domain Regularization

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Journal of Meteorological Research 2024年第2期38卷 285-302页

作者： Anfan HUANG Leilei KOU Yanzhi LIANG Ying mao Haiyang GAO zhigang CHU School of Atmospheric Physics Nanjing University of Information Science&TechnologyNanjing 210044 Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science&TechnologyNanjing 210044

High-quality and accurate precipitation estimations can be obtained by integrating precipitation information measures using ground-based and spaceborne radars in the same target *** the true precipitation state is a typical inverse problem for a given set of noisy radar precipitation *** regularization method can appropriately constrain the inverse problem to obtain a unique and stable *** different types of precipitation with different prior distributions,the L_(1) and L_(2) norms were more effective in constraining stratiform and convective precipitation,*** a combination of L_(1) and L_(2) norms,the Huber norm is more suitable for mixed precipitation *** study uses different regularization norms to combine precipitation data from the C-band dual-polarization ground radar(CDP)and dual-frequency precipitation radar(DPR)on the Global Precipitation Measurement(GPM)mission core *** to single-source radar data,the fused figures contain more information and present a comprehensive precipitation structure encompassing the reflectivity and precipitation *** 27 precipitation cases,the fusion results utilizing the Huber norm achieved a structural similarity index measure(SSIM)and a peak signal-to-noise ratio(PSNR)of 0.8378 and 30.9322,respectively,compared with the CDP *** fusion results showed that the Huber norm effectively amalgamate the features of convective and stratiform precipitation,with a reduction in the mean absolute error(MAE;16.1%and 22.6%,respectively)and root-mean-square error(RMSE;11.7%and 13.6%,respectively)compared to the 1-norm and ***,in contrast to the fusion results of scale recursive estimation(SRE),the Huber norm exhibits superior capability in capturing the localized precipitation intensity and reconstructing the detailed features of precipitation.

关键词： dual-frequency precipitation radar(DPR) dual-polarization radar data fusion regularization Huber norm

衡水湖鱼类群落及多样性的时空差异以及与水环境因子的关系

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湖泊科学 2024年第5期36卷 1447-1458页

作者：陈浩东张韩付适林镇美刘成陈开宁张余广毛志刚梅雪英刘正文于谨磊中国科学院南京地理与湖泊研究所南京210008 中国科学院大学中丹学院北京100049 安徽农业大学合肥230036 河北衡水湖国家级自然保护区管理委员会衡水673499 暨南大学广州510632

于2021年调查了河北衡水湖大、小两个湖区的鱼类群落结构、多样性,分析了其时空差异及与环境因子之间的关系。研究共记录到29种鱼类,隶属15科27属,以鲤科鱼类为主,占渔获物重量的98%;(Hemiculter leucisculus)、鲫(Carassius carassius... 详细信息

于2021年调查了河北衡水湖大、小两个湖区的鱼类群落结构、多样性,分析了其时空差异及与环境因子之间的关系。研究共记录到29种鱼类,隶属15科27属,以鲤科鱼类为主,占渔获物重量的98%;(Hemiculter leucisculus)、鲫(Carassius carassius)、鲢(Hypophthalmichthys molitrix)和似鳊(Pseudobrama simoni)是衡水湖的优势种。大湖区鱼类的多样性指数、均匀度指数、丰富度指数不存在显著的时空差异。置换多因素方差分析显示大湖区鱼类群落结构存在显著的季节差异,其平均相似性百分比差异性超过40%;大、小湖区空间上的差异性为41%。丰度-生物量曲线图表明:大湖区的鱼类群落在不同季节均受到干扰,其中秋季受的干扰较弱;小湖区的鱼类群落仅在春、夏季受到干扰,而在秋季未受干扰。大湖区鱼类群落与环境因子之间的冗余分析表明:水中总磷浓度是鱼类群落结构变化最重要的解释因子(解释度为36%);总磷、亚硝态氮、透明度和总氮是影响衡水湖大湖区鱼类群落结构的主要环境因子。衡水湖的鱼类群落以小型杂食性鱼类(如、鲫、似鳊等)为主,肉食性鱼类数量较少,鱼类小型化趋势明显。因此,从水质改善与生态修复的角度,在控制外源污染输入的同时,需调控衡水湖的鱼类群落结构,以增强肉食性对衡水湖生态系统的下行调控作用,削弱杂食性鱼类和浮游动物食性鱼类对水质潜在的负面作用,达到改善水质的目标。

关键词：温带湖泊鱼类调控生态修复富营养化鱼类群落结构

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全搜索运动估计算法的高效VLSI结构设计

固体电子学研究与进展 2006年第2期26卷 220-224页

作者：曹伟毛志刚哈尔滨工业大学微电子中心哈尔滨150001

提出了一种具有可重构寄存器阵列的高效树型运算结构。该结构具有100%的PE利用率。同传统的全树型结构相比,在具有相近处理能力的情况下,它的输入数据带宽得到了大幅度降低。采用该设计思想实现了一个具有256个PE的电路,用于处理16×16... 详细信息

提出了一种具有可重构寄存器阵列的高效树型运算结构。该结构具有100%的PE利用率。同传统的全树型结构相比,在具有相近处理能力的情况下,它的输入数据带宽得到了大幅度降低。采用该设计思想实现了一个具有256个PE的电路,用于处理16×16的宏块。该电路在工作频率为55 MH z时就可以满足搜索区域是[-16,16]、帧率为30 fps和帧尺寸为720×576的视频序列的实时压缩处理要求。此时,该结构的处理能力比相近硬件规模的AB 2结构提高了31%,输入数据带宽仅为全树型的1/16。

关键词：全搜索块匹配算法运动估计可重构树型结构

A GAUSSIAN MIXTURE MODEL-BASED REGULARIZATION METHOD IN ADAPTIVE IMAGE RESTORATION

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Journal of Electronics(China) 2007年第1期24卷 83-89页

作者： Liu Peng Zhang Yan mao zhigang Shenzhen Graduate School Harbin Institute of Technology Shenzhen 518055 China

A GMM (Gaussian Mixture Model) based adaptive image restoration is proposed in this paper. The feature vectors of pixels are selected and extracted. Pixels are clustered into smooth,edge or detail texture region according to variance-sum criteria function of the feature vectors. Then pa-rameters of GMM are calculated by using the statistical information of these feature vectors. GMM predicts the regularization parameter for each pixel adaptively. Hopfield Neural Network (Hopfield-NN) is used to optimize the objective function of image restoration,and network weight value matrix is updated by the output of GMM. Since GMM is used,the regularization parameters share properties of different kind of regions. In addition,the regularization parameters are different from pixel to pixel. GMM-based regularization method is consistent with human visual system,and it has strong gener-alization capability. Comparing with non-adaptive and some adaptive image restoration algorithms,experimental results show that the proposed algorithm obtains more preferable restored images.

关键词： Image processing Gaussian Mixture Model (GMM) Hopfield Neural Network (Hopfield-NN) Regularization Adaptive image restoration