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中国医学影像技术 2019年第3期35卷 479-479页

作者：彭丽君曾旭文梁治平郭威熊玉超暨南大学第一临床医学院医学影像中心广东广州510632 广州市红十字会医院放射科广东广州510220

患者男,59岁,因'腰背部疼痛伴右下肢放射痛半年'入院,既往有神经纤维瘤病Ⅰ型病史。查体:跛行体态,脊柱胸腰椎生理弯曲消失,头颈、四肢及躯干可触及多发肿物,腰背部下段可见肿物,无明显破溃。MRI:L2椎体溶骨性骨质破坏并病理性... 详细信息

患者男,59岁,因'腰背部疼痛伴右下肢放射痛半年'入院,既往有神经纤维瘤病Ⅰ型病史。查体:跛行体态,脊柱胸腰椎生理弯曲消失,头颈、四肢及躯干可触及多发肿物,腰背部下段可见肿物,无明显破溃。MRI:L2椎体溶骨性骨质破坏并病理性压缩骨折,其内见软组织肿块,边缘略呈分叶状,T1WI呈等低信号,T2WI呈不均匀高信号,累及双侧椎弓根;皮肤及皮下见多个大小不等结节状稍长T1长T2肿块(图1)。

关键词：神经纤维瘤病磁共振成像神经鞘瘤

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椎体骨质疏松性骨折MRI研究进展

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中国介入影像与治疗学 2018年第2期15卷 119-122页

作者：郭威曾旭文梁治平熊玉超彭丽君暨南大学第一临床医学院广东广州510220 广州市红十字会医院暨南大学医学院附属广州红十字会医院放射科广东广州510220

椎体骨质疏松性骨折(OCVF)的发病率逐年上升。MRI可无创观察OCVF的类型、病理分期及严重程度等,且无辐射。近年来,MRI已成为评价OCVF的重要手段,可为临床选择治疗方案提供影像学依据。本文对OCVF的MRI研究进展进行综述。

关键词：磁共振成像脊柱骨折骨质疏松

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Recent advances in designing conductive hydrogels for flexible electronics

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InfoMat 2020年第5期2卷 843-865页

作者： Qiongyao Peng Jingsi Chen Tao Wang xuwen Peng Jifang Liu Xiaogang Wang Jianmei Wang Hongbo zeng Department of Chemical and Materials Engineering University of AlbertaEdmontonAlbertaCanada The Fifth Affiliated Hospital Guangzhou Medical UniversityGuangzhouGuangdongChina Heavy Machinery Engineering Research Center of Education Ministry Taiyuan University of Science and TechnologyTaiyuanChina

Flexible electronics have emerged as an exciting research area in recent years,serving as ideal interfaces bridging biological systems and conventional electronic *** electronics can not only collect physiological signals for human health monitoring but also enrich our daily life with multifunctional smart materials and *** hydrogels(CHs)have become promising candidates for the fabrication of flexible electronics owing to their biocompatibility,adjustable mechanical flexibility,good conductivity,and multiple stimuli-responsive *** achieve on-demand mechanical properties such as stretchability,compressibility,and elasticity,the rational design of polymer networks via modulating chemical and physical intermolecular interactions is ***,the type of conductive components(eg,electron-conductive materials,ions)and the incorporation method also play an important role in the conductivity of ***-CHs usually possess excellent conductivity,while ion-CHs are generally transparent and can generate ion gradients within the hydrogel *** mini review focuses on the recent advances in the design of CHs,introducing various design strategies for electron-CHs and ion-CHs employed in flexible electronics and highlighting their versatile applications such as biosensors,batteries,supercapacitors,nanogenerators,actuators,touch panels,and displays.

关键词： biosensor composite hydrogel conductive hydrogel flexible electronics supercapacitor

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Process Parameters Analysis and Artificial Neural Network Prediction for Color Variation after Laser Induced Ti-6Al-4V Surface Coloring

SSRN

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SSRN 2023年

作者： Zhou, Kai Wu, Xin zeng, Hui Che, Xingbang Wang, xuwen Xiao, Han Yang, Can Yang, Huan Ruan, Shuangchen Li, Chunbo Sino-German College of Intelligent Manufacturing Shenzhen Technology University Shenzhen518118 China School of Remote Sensing and Information Engineering Wuhan University Wuhan430079 China DH Automation Technology Co. Ltd Shenzhen518110 China Key Laboratory of Advanced Optical Precision Manufacturing Technology Guangdong Higher Education Institutes Shenzhen Technology University Shenzhen518118 China

Metal surface coloring process is considered as a process with strong technical influence because its’ advantage in improving the appearance of metal, identifying metal products with information, preventing corrosion of metal substrate, excellent color stability and other characteristics. Laser induced metal coloring is expected to become a metal coloring process with stability and efficiency for its quickly response in producing bright colors on the metal matrix by simply setting the process parameters. The process is simple and with excellent efficiency and accuracy. At present, in the field of laser induced coloring, the main method is to find the corresponding relationship between laser energy density and color formation with a large number of laser parameters, the main limit in this method comes from lacking convenience to reproduce color s within costing a great deal of time. How to establish the nonlinear relationship between metal coloring process and specific color formation is still a challenge. Here, we observed thousands of laser-induced Ti-6Al-4V coloring test data in efficient way, based on the color evaluation index of CIE1976 color system and the theory of Multilayer Perceptron algorithm. It is proved that the color produced by the laser is highly matched with the color predicted by training of Multi-layer Perceptron algorithm. The precision difference brought by different algorithm strategies is compared, attempted to find the algorithm strategy that is capable of predicting color formation with high accuracy. This study provides a feasible method for the application of laser coloring to the industrial field. © 2023, The Authors. All rights reserved.

关键词： Neural networks

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Mapping of Soil Liquefaction Associated with the 2021 Mw 7.4 Maduo (Madoi) Earthquake Based on the UAV Photogrammetry Technology

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REMOTE SENSING 2023年第4期15卷 1032页

作者： Wang, Wenxin Jing, Liu-zeng Shao, Yanxiu Wang, Zijun Han, Longfei Shen, xuwen Qin, Kexin Gao, Yunpeng Yao, Wenqian Hu, Guiming zeng, Xianyang Liu, Xiaoli Wang, Wei Cui, Fengzhen Liu, Zhijun Li, Jinyang Tu, Hongwei Tianjin Univ Inst Surface Earth Syst Sci Sch Earth Syst Sci Tianjin 300072 Peoples R China China Earthquake Adm Inst Geol State Key Lab Earthquake Dynam Beijing 100029 Peoples R China China Earthquake Adm Inst Seismol Key Lab Earthquake Geodesy Wuhan 430071 Peoples R China Earthquake Agcy Qinghai Prov Xining 810001 Peoples R China

The 2021 Mw 7.4 Maduo (Madoi) earthquake that struck the northern Tibetan Plateau resulted in widespread coseismic deformation features, such as surface ruptures and soil liquefaction. By utilizing the unmanned aerial vehicle (UAV) photogrammetry technology, we accurately recognize and map 39,286 liquefaction sites within a 1.5 km wide zone along the coseismic surface rupture. We then systematically analyze the coseismic liquefaction distribution characteristics and the possible influencing factors. The coseismic liquefaction density remains on a higher level within 250 m from the surface rupture and decreases in a power law with the increasing distance. The amplification of the seismic waves in the vicinity of the rupture zone enhances the liquefaction effects near it. More than 90% of coseismic liquefaction occurs in the peak ground acceleration (PGA) > 0.50 g, and the liquefaction density is significantly higher in the region with seismic intensity > VIII. Combined with the sedimentary distribution along-strike of the surface rupture, the mapped liquefaction sites indicate that the differences in the sedimentary environments could cause more intense liquefaction on the western side of the epicenter, where loose Quaternary deposits are widely spread. The stronger coseismic liquefaction sites correspond to the Eling Lake section, the Yellow River floodplain, and the Heihe River floodplain, where the soil is mostly saturated with loose fine-grained sand and the groundwater level is high. Our results show that the massive liquefaction caused by the strong ground shaking during the Maduo (Madoi) earthquake was distributed as the specific local sedimentary environment and the groundwater level changed.

关键词： soil liquefaction Maduo (Madoi) earthquake earthquake ground motion sedimentary environment UAV photogrammetry technology

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福建近海漂移物漂移轨迹分析及模拟

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厦门大学学报（自然科学版） 2023年第3期62卷 435-443页

作者：曾银东郭民权方许闻江毓武郑祥靖中国海洋大学海洋与大气学院山东青岛266100 福建省海洋预报台福建福州350003 厦门大学海洋与地球学院福建厦门361102

浮子漂移实验能够捕捉海域表面海流的特征,为提高海上漂移物漂移轨迹预测模式的预测精度提供改进依据.通过在福建近海的浮子漂移实验,选取兴化湾、厦门湾与湾外近岸海域浮子的运动轨迹,对研究海域的表面流进行分析,并在业务化三维海洋... 详细信息

浮子漂移实验能够捕捉海域表面海流的特征,为提高海上漂移物漂移轨迹预测模式的预测精度提供改进依据.通过在福建近海的浮子漂移实验,选取兴化湾、厦门湾与湾外近岸海域浮子的运动轨迹,对研究海域的表面流进行分析,并在业务化三维海洋动力模型基础上,结合拉格朗日粒子追踪法,建立了福建近海海上目标物漂移轨迹预测模式,利用浮子漂移实验对漂移模式在福建近海的适用性进行了验证.研究结果表明:湾内浮子运动主要受潮流作用,呈现往复运动的趋势;湾外浮子运动主要由外海环流驱动,有沿等深线迁移趋势,并受到潮过程作用局部形成回流.而本研究构建的福建近海海上目标物漂移轨迹预测模式的模拟结果与浮子漂移结果基本一致,并且相对于湾内的轨迹预测,湾外的模拟有更高的可信度.同时浮子漂移实验还表明FES潮流模型在台湾海峡有较高的准确度,而湾内欠佳.

关键词：福建近海浮子漂移实验拉格朗日粒子追踪法漂移轨迹预测

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肝细胞癌合并胆管癌栓与肝门部胆管癌的MRI鉴别诊断

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医学影像学杂志 2018年第10期28卷 1682-1686页

作者：曾玉萍刘庆余梁治平曾旭文曾玉蓉暨南大学医学院附属广州红十字会医院广州市红十字会医院放射科广东广州510220 中山大学孙逸仙纪念医院放射科广东广州510120 广东省广州市增城区人民医院中山大学附属博济医院放射科广东广州511300

目的探讨肝细胞癌合并胆管癌栓(hepatocellular carcinoma bile duct tumor thrombia,HCCBDTT)与肝门部胆管细胞癌(hilar cholangiocarcinoma,HC)的MRI鉴别诊断。方法回顾性分析经病理证实的HCCBDTT患者46例及HC患者45例的MRI资料,采用两独立样本t检验和X^2检验对二者的MRI表现进行统计分析,以P <0. 05差异具有统计学意义。结果 HCCBDTT与HC比较,肝内胆管扩张、肝硬化、门静脉癌栓、肿物区胆管扩张、肿物区胆管壁显示、肿物区胆管壁增厚、肿物邻近区域胆管壁增厚、胆管肿物末端T1WI高信号、胆管肿物常规增强扫描信号等征象存在统计学差异。肝叶萎缩、门脉纤细、胆管结石、腹膜后淋巴结大及胆管肿物大小、T2WI信号、T1WI信号等征象无统计学差异。结论虽然HCCBDTT与HC的MRI表现多有重叠,但结合多个统计学差异性征象综合分析,对实现两者的鉴别诊断具有重要临床价值。

关键词：肝细胞癌合并胆管癌栓肝门部胆管癌磁共振成像

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青藏高原东南缘次林错岩体晚白垩世—早新生代快速剥蚀

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地质学报 2022年第10期96卷 3332-3344页

作者：沈续文沈晓明刘静曾令森杨超群葛玉魁邢宇堃曾宪阳王子君李云帅李金阳天津大学地球系统科学学院天津300072 应急管理部国家自然灾害防治研究院北京100085 中国地质科学院地质研究所北京100037 中国地震局地质研究所北京100029

青藏高原东南缘是研究构造、地貌演化和气候变化相互作用的理想场所,前人研究主要揭示了晚始新世—早中新世和晚中新世以来的快速剥蚀事件,缺乏晚白垩世—早新生代时期地貌演化过程的研究。次林错花岗岩已有的低温热年代学数据覆盖了整... 详细信息

青藏高原东南缘是研究构造、地貌演化和气候变化相互作用的理想场所,前人研究主要揭示了晚始新世—早中新世和晚中新世以来的快速剥蚀事件,缺乏晚白垩世—早新生代时期地貌演化过程的研究。次林错花岗岩已有的低温热年代学数据覆盖了整个新生代时期,为探索该区域新生代早期的剥露演化历史提供了重要资料。该岩体新生代早期冷却事件是岩浆冷却单一作用的结果,还是受快速剥蚀作用的影响,目前仍然存疑,需要定量研究。因此,本文结合已有的岩石地化和年代学数据,对次林错花岗岩开展了锆石饱和温度和一维岩浆冷却模拟研究。锆石饱和温度计算结果表明次林错花岗岩的岩浆结晶温度介于647~705℃之间,属低温花岗岩。一维岩浆冷却模拟结果显示岩体侵位时的最小围岩温度为160~120℃,对应深度约为3.7~5.0 km。结合锆石和磷灰石(U-Th)/He年代学数据,本文认为该岩体在晚白垩世—早新生代时期(67~40 Ma)经历了一期剥蚀量至少为2 km的快速剥蚀事件。已发表成果的综合分析表明,此次快速剥露事件可能是整个青藏高原地区广泛存在的构造剥蚀事件,新特提斯洋的俯冲闭合与印亚板块的初始碰撞可能是触发此次大规模区域剥蚀的主要原因。

关键词：青藏高原东南缘次林错花岗岩晚白垩世—早新生代快速剥蚀锆石饱和温度计一维岩浆冷却模拟低温热年代学

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Erratum to“Probing the Interfacial Forces and Surface Interaction Mechanisms in Petroleum Production Processes”[Engineering 18(2022)49-61]

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Engineering 2023年第3期22卷 233-233页

作者： Diling Yang xuwen Peng Qiongyao Peng Tao Wang Chenyu Qiao Ziqian Zhao Lu Gong Yueliang Liu Hao Zhang Hongbo zeng Department of Chemical and Materials Engineering University of AlbertaEdmontonAB T6G 1H9Canada College of Petroleum Engineering China University of PetroleumBeijing 102249China

In Ref.[1],Eq.(8)has a typo,the following replacement should be done.γ_(bb)/2rδ/δr(rδ(r,t)/δr=2γ_(bb)/R_(bb)-Þ(t,t)-Ⅱ[h[r,t)](bubble=drop-bubble=drop)The publisher regrets an error in the original–article,and the sentence that explained the equation“Eqs.(8)–(10)show the augmented Young–Laplace equation for the interactions of gas bubbles or liquid droplets in different configurations,where Rb is the bubble/drop radius,Rp is the particle radius,Rbp=(1/Rb+1/Rp)1.

关键词： bubble radius equation

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Recent advances in bubble-based technologies: Underlying interaction mechanisms and applications

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APPLIED PHYSICS REVIEWS 2021年第1期8卷

作者： Qiao, Chenyu Yang, Diling Mao, Xiaohui Xie, Lei Gong, Lu Peng, xuwen Peng, Qiongyao Wang, Tao Zhang, Hao zeng, Hongbo Univ Alberta Dept Chem & Mat Engn Edmonton AB T6G 1H9 Canada

Gas bubbles widely exist in nature and numerous industrial processes. The physicochemical characteristics of bubbles such as large specific surface area, low density, and hydrophobicity make them an ideal platform for developing colloidal and interfacial technologies. Over the past few decades, much effort has been devoted to investigating the properties and behaviors of bubbles and their applications. A series of bubble-based technologies (BBTs) have been developed, which have attracted increasing attention and shown great importance in a wide range of engineering, material, and biological fields. These BBTs, such as bubble flotation and the bubble-liposome system, provide feasible and promising solutions to mineral separation, material assembling, medical diagnosis, and drug delivery. In this work, we have systematically reviewed the physicochemical characteristics of bubbles and how to modulate their behaviors in complex fluid systems, as well as the underlying fundamental interaction mechanisms of bubbles in related BBTs. Advanced nanomechanical techniques such as atomic force microscopy, which are used to quantify the interaction mechanisms in bubble-containing systems, have been introduced. The effects of various influential factors on the bubble behaviors are discussed, which provide potential approaches to improve the controllability and performance of BBTs. The recent advances in the applications of selected BBTs in engineering, biomedical, and material areas are presented. Some remaining challenging issues and perspectives for future studies have also been discussed. This review improves the fundamental understanding of characteristics and surface interaction mechanisms of bubbles, with useful implications for developing advanced BBTs.

关键词： Diagnosis

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