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Multilevel Attention Unet Segmentation Algorithmfor Lung Cancer Based on CT Images

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Computers, Materials & Continua 2024年第2期78卷 1569-1589页

作者： Huan Wang shi qiu Benyue Zhang Lixuan Xiao Xi’an Institute of Optics and Precision Mechanics Chinese Academy of SciencesXi’anChina School of Biomedical Engineering Fourth Military Medical UniversityXi’anChina University of Illinois at Urbana Champion ChampaignUSA

Lung cancer is a malady of the lungs that gravely jeopardizes human ***,early detection and treatment are paramount for the preservation of human *** computed tomography(CT)image sequences can explicitly delineate the pathological condition of the *** meet the imperative for accurate diagnosis by physicians,expeditious segmentation of the region harboring lung cancer is of utmost *** utilize computer-aided methods to emulate the diagnostic process in which physicians concentrate on lung cancer in a sequential manner,erect an interpretable model,and attain segmentation of lung *** specific advancements can be encapsulated as follows:1)Concentration on the lung parenchyma region:Based on 16-bit CT image capturing and the luminance characteristics of lung cancer,we proffer an intercept histogram algorithm.2)Focus on the specific locus of lung malignancy:Utilizing the spatial interrelation of lung cancer,we propose a memory-based Unet architecture and incorporate skip connections.3)Data Imbalance:In accordance with the prevalent situation of an overabundance of negative samples and a paucity of positive samples,we scrutinize the existing loss function and suggest a mixed loss *** results with pre-existing publicly available datasets and assembled datasets demonstrate that the segmentation efficacy,measured as Area Overlap Measure(AOM)is superior to 0.81,which markedly ameliorates in comparison with conventional algorithms,thereby facilitating physicians in diagnosis.

关键词： Lung cancer computed tomography computer-aided diagnosis Unet segmentation

Two-dimensional precise figuring of 500 mm-long X-ray mirror using one-dimensional ion beam system

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Advances in Manufacturing 2024年第1期12卷 177-184页

作者： qiu-shi Huang Han-Dan Huang Qiao-Yu Wu Jun Yu Zhong Zhang Zhan-Shan Wang MOE Key Laboratory of Advanced Micro-Structured Materials Institute of Precision Optical Engineering(IPOE)School of Physics Science and EngineeringTongji UniversityShanghai200092People’s Republic of China Shanghai Professional Technical Service Platform for Full-Spectrum and High-Performance Optical Thin Film Devices and Applications Tongji UniversityShanghai200092People’s Republic of China Shanghai Frontiers Science Center of Digital Optics Tongji UniversityShanghai200092People’s Republic of China

In this study,a new method was developed to realize two-dimensional(2D)figure correction of grazing-incidence X-ray mirrors using a one-dimensional(1D)ion-beam figuring system.A mask of holes was specifically designed to generate removal functions at different widths and extend the figuring capability over a wide ***,a long mirror could be *** this method,the surface height root-mean-square(RMS)error of the center area of 484 mm×16 mm was reduced from 11.49 nm to 2.01 nm,and the 1D meridional RMS error reached 1.0 *** proposed method exhibits high precision and cost effectiveness for production of long X-ray mirrors.

关键词： Long-size mirrors Ion beam figuring Two-dimensional figure correction Mask

Two-dimensional bifunctional electrocatalyst(Mo-NiFe-LDH)with multilevel structure for highly efficient overall water splitting

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Rare Metals 2024年第6期43卷 2613-2622页

作者： Bao-Jie Zhang Bin Chang shi-Peng qiu Gang Zhao Xiao Wang Xi-Jin Xu Lan Mu Wen-Bo Liao Xiao-Jing Dong School of Physics and Technology University of JinanJinan 250000China KAUST Catalysis Center(KCC) King Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Kingdomof SaudiArabia School of Chemical Engineering and Technology Tianjin UniversityTianjin 300072China School of Physics and Physical Engineering Qufu Normal UniversityQufu273100China

To effectively address energy challenges,it is crucial to explore efficient and stable bifunctional nonprecious metal *** this study,a Mo-doped nickeliron layered double hydroxide with flower-cluster architecture was successfully prepared by a one-step hydrothermal method,which demonstrated a good water splitting *** an appropriate amount of Mo doping,some lattice distortions in the material provided reactive sites for the adsorption and conversion of intermediates,thus optimising the charge distribution of the ***,the multidimensional void structures formed after doping had a larger specific surface area and accelerated the penetration of the electrolyte,which significantly improved the activity of the catalyst in alkaline *** 10 mA·cm^(-2),the hydrogen and oxygen evolution overpotentials of Mo-doped nickel-iron double hydroxides(Mo-NiFe LDH/NF-0.2)were 167 and 220 mV,respectively,with an excellent durability up to 24 *** the Mo-NiFe LDH/NF-0,2 catalyst was used as the cathode and anode of an electrolytic cell,the catalyst achieved a current density of 10 mA·cm^(-2)at an applied voltage of 1.643 *** study provides a novel approach for designing excellent bifunctional electrocatalysts containing nonprecious metals.

关键词： Bifunctional electrocatalysts 2D multilevel structure Overall water splitting Mo-doped Ni-Fe LDH

Rapid characterization of non-volatile phenolic compounds reveals the reliable chemical markers for authentication of traditional Chinese medicine Xiang-ru among confusing Elsholtzia species

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Chinese Journal of Natural Medicines 2024年第4期22卷 375-384页

作者： ZENG Zhen ZHANG Chen HU Jiadong WANG Feiyan WU Ziding WANG Jing ZHANG Jun YANG Shuda CHEN Junfeng LI Mingming TONG Qi qiu shi CHEN Wansheng The SATCM Key Laboratory for New Resources&Quality Evaluation of Chinese Medicine Institute of Chinese Materia MedicaShanghai University of Traditional Chinese MedicineShanghai 201203China Department of Pharmacy Second Affiliated Hospital of Navy Medical UniversityShanghai 200003China Kunming Plant Classification Biotechnology Co. Ltd.Kunming 650500China School of Pharmaceutical Sciences and Yunnan Key Laboratory of Pharmacology for Natural Products Kunming Medical UniversityKunming 650500China State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs Beijing100700China

The aerial parts of Mosla chinensis *** Mosla chinensis cv.'Jiangxiangru'(MCJ)are widely utilized in traditional Chinese medicine(TCM),known collectively as ***,due to clinical effectiveness concerns and frequent misidentification,the original plants have increasingly been substituted by various species within the genera Elsholtzia and *** challenge in distinguishing between these genera arises from their similar morphological and metabolic *** address this issue,our study introduced a rapid method for metabolic characterization,employing high-resolution mass spectrometry-based *** detailed biosynthetic and chemometric analyses,we pinpointed five phenolic compounds—salviaflaside,cynaroside,scutellarein-7-O-D-glucoside,rutin,and vicenin-2—among 203 identified compounds,as reliable chemical markers for distinguishing Xiang-ru from closely related Elsholtzia *** methodology holds promise for broad application in the analysis of plant aerial parts,especially in verifying the authenticity of aromatic traditional medicinal *** findings underscore the importance of non-volatile compounds as dependable chemical markers in the authentication process of aromatic traditional medicinal plants.

关键词： Genus Elsholtzia Genus Mosla Traditional Chinese medicine Xiang-ru Non-volatile phenolic compounds Liquid chromatography-mass spectrometry

Cell softness reveals tumorigenic potential via ITGB8/AKT/glycolysis signaling in a mice model of orthotopic bladder cancer

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Chinese Medical Journal 2024年第2期137卷 209-221页

作者： shi qiu Yaqi qiu Linghui Deng Ling Nie Liming Ge Xiaonan Zheng Di Jin Kun Jin Xianghong Zhou Xingyang Su Boyu Cai Jiakun Li Xiang Tu Lina Gong Liangren Liu Zhenhua Liu Yige Bao Jianzhong Ai Tianhai Lin Lu Yang Qiang Wei Department of Urology Institute of UrologyNational Clinical Research Center for Geriatrics and Center of Biomedical Big DataWest China Hospital of Sichuan UniversityChengduSichuan 610041China Department of Molecular Oncology Institute of Oncology Research(IOR)Oncology Institute of Southern Switzerland(IOSI)Bellinzona 6500Switzerland Department of Science and Drug Technology University of TurinTurinItaly National Clinical Research Center of Geriatrics The Center of Gerontology and GeriatricsWest China HospitalSichuan UniversityChengduSichuan 610000China Department of Pathology West China HospitalSichuan UniversityChengduSichuan 610041China Department of Pharmaceutics and Bioengineering School of Chemical EngineeringSichuan UniversityChengduSichuan 610000China

Background:Bladder cancer,characterized by a high potential of tumor recurrence,has high lifelong monitoring and treatment *** date,tumor cells with intrinsic softness have been identified to function as cancer stem cells in several cancer ***,the existence of soft tumor cells in bladder tumors remains ***,our study aimed to develop a microbarrier microfluidic chip to efficiently isolate deformable tumor cells from distinct types of bladder cancer ***:The stiffness of bladder cancer cells was determined by atomic force microscopy(AFM).The modified microfluidic chip was utilized to separate soft cells,and the 3D Matrigel culture system was to maintain the softness of tumor *** patterns of integrinβ8(ITGB8),protein kinase B(AKT),and mammalian target of rapamycin(mTOR)were determined by Western *** immunostaining was conducted to examine the interaction between F-actin and tripartite motif containing 59(TRIM59).The stem-cell-like characteristics of soft cells were explored by colony formation assay and in vivo studies upon xenografted tumor ***:Using our newly designed microfluidic approach,we identified a small fraction of soft tumor cells in bladder cancer *** importantly,the existence of soft tumor cells was confirmed in clinical human bladder cancer specimens,in which the number of soft tumor cells was associated with tumor ***,we demonstrated that the biomechanical stimuli arising from 3D Matrigel activated the F-actin/ITGB8/TRIM59/AKT/mTOR/glycolysis pathways to enhance the softness and tumorigenic capacity of tumor ***,we detected a remarkable up-regulation in ITGB8,TRIM59,and phospho-AKT in clinical bladder recurrent tumors compared with their non-recurrent ***:The ITGB8/TRIM59/AKT/mTOR/glycolysis axis plays a crucial role in modulating tumor softness and ***,the soft tumor cells become more sensitive to chemother

关键词： Soft tumor cells 3D Matrigel Stemness Non-muscle invasive bladder neoplasms Microfluidic analytical techniques

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效力体系视角下的法律行为成立理论构建

当代法学 2024年第2期38卷 41-52页

作者：殷秋实中央财经大学法学院

现有的法律行为成立理论聚焦于成立与效力的区分、成立为事实判断和成立要件,并未关注不成立,未能明晰成立与不成立的效果与功能,导致理论的不自恰和法条解释基础的缺失。这些问题的解决需要在效力体系的视角下构建法律行为成立理论。... 详细信息

现有的法律行为成立理论聚焦于成立与效力的区分、成立为事实判断和成立要件,并未关注不成立,未能明晰成立与不成立的效果与功能,导致理论的不自恰和法条解释基础的缺失。这些问题的解决需要在效力体系的视角下构建法律行为成立理论。基于我国法的具体规定,在非决议的法律行为中,不成立具有和无效不同的效果,成立具有和有效不同的效果。不成立否定行为的存在及其意思自治意义,成立则意味着法律认可当事人行为具有意思自治上的重要性,是法律行为全部规范的适用前提。据此,成立是法律行为效力评价体系的一部分,并非事实判断,而是法律判断。重塑后的成立理论要求成立要件符合准入门槛低、由法律强制规定、不成立会导致无任何法律行为效力可能等标准。

关键词：法律行为不成立无效效力体系成立要件

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内镜技术治疗肝胆管结石值得关注的几个问题

中国实用外科杂志 2024年第3期44卷 267-270页

作者：冯秋实北京大学第一医院肝胆外科北京100034

在我国,肝胆管结石病是临床常见病,肝胆管结石的高残石率、高复发率、高再手术率迄今仍是胆道外科的难题。因为肝胆管结石病多合并肝胆管狭窄、反复发作的胆管炎,晚期发展至肝硬化门静脉高压症,且是发生胆管癌的重要因素,诊断和治疗均... 详细信息

在我国,肝胆管结石病是临床常见病,肝胆管结石的高残石率、高复发率、高再手术率迄今仍是胆道外科的难题。因为肝胆管结石病多合并肝胆管狭窄、反复发作的胆管炎,晚期发展至肝硬化门静脉高压症,且是发生胆管癌的重要因素,诊断和治疗均非常困难。虽然规则性肝段、肝叶切除是治疗肝胆管结石病的首选方法,近年来,肝胆管结石病微创治疗领域已取得一系列进展和突破,但仍有部分肝胆管结石难以通过手术完全去除。涉及腹腔镜、机器人手术系统、内镜等众多微创技术,其中内镜技术同样发挥了重要的作用,弥补了单纯手术治疗的不足,为不能手术肝切除或多次手术后、合并肝硬化的残留和(或)复发性结石病人的治疗带来更多的选择。内镜技术的广泛应用为肝胆管结石病的治疗注入了新的活力,使得肝胆管结石的治疗方案更为多元化。

关键词：肝胆管结石胆道镜经皮经肝胆道镜

Time-resolved ultra-small-angle X-ray scattering beamline(BL10U1)at SSRF

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Nuclear Science and Techniques 2024年第2期35卷 6-19页

作者： Wen-Qiang Hua Chun-Ming Yang Ping Zhou Feng Tian Jin-You Lin Yu-Zhu Wang Xiao-Yun Li Xia-Ran Miao Chun-Xia Hong qiu-shi Huang Xin-Tong Zhao Yong-Feng Men Jie Wang Xing-Yu Gao Xiu-Hong Li Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China Key Laboratory of Advanced Micro Structural Materials MOEInstitute of Precision Optical EngineeringSchool of Physics Science and EngineeringTongji UniversityShanghai 200092China State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China

The construction of a new beamline,BL10U1,was completed at the Shanghai synchrotron radiation facility in *** multipurpose beamline was designed to provide X-ray scattering techniques such as ultra-small-angle X-ray scattering(USAXS),small-angle X-ray scattering(SAXS),wide-angle X-ray scattering,and microfocus SAXS(μSAXS)for a broad user *** realize fast time-resolved USAXS experiments,the beamline adopted an in-vacuum undulator with a total length of 1.6 m as the photon *** in-house cryogenic-cooled double multilayer monochromator was installed to deliver a photon flux of approximately 10^(13) photons/s at a photon energy of 10 *** three-year successful operation of this beamline demonstrated that the monochromator operated smoothly,as ***10U1 has three end stations in succession:USAXS end station,μSAXS end station,and end station for industrial *** minimum scattering vector q~0.0042 nm^(-1) at 10 keV can be achieved at the USAXS end station equipped with a 28 m-long and 1.8 m-diameter vacuum flight *** theμSAXS end station,a beam spot of less than 10×8μm was achieved for micro-SAXS *** contrast,in situ experimental instruments up to 5 m high and 8 m wide can be mounted at the industrial application end station,which offers industrial scientists the opportunity to use their large industrial ***10U1 opens up a new capability to investigate phenomena such as non-equilibrium and dynamic processes of materials with a wide length scale from angstroms to micrometers with millisecond time *** this paper,we also report beamline design considerations and commissioning results.

关键词： Synchrotron radiation Ultra-small-angle X-ray scattering Micro small-angle X-ray scattering USAXS Time resolved μSAXS

基层政府“编外扩张”何以治理:一个政府职责的视角——基于江苏省C镇的个案分析

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天津行政学院学报 2024年第3期26卷 14-26页

作者：邱实杨爽南京师范大学江苏南京210023 中共江苏省委宣传部江苏南京210000

基层政府编外人员的扩张会引发基层治理中的各类问题。基层政府“编外扩张”的形式主要呈现为社会化用工规制下的“转移性”扩张、编外人员流动下的“储备性”扩张和治理权限不足下的“自主性”扩张。在政府职责的视角下,基层政府“编... 详细信息

基层政府编外人员的扩张会引发基层治理中的各类问题。基层政府“编外扩张”的形式主要呈现为社会化用工规制下的“转移性”扩张、编外人员流动下的“储备性”扩张和治理权限不足下的“自主性”扩张。在政府职责的视角下,基层政府“编外扩张”的发生逻辑可被概括为职责过载、职责脱节和职责外溢。基于基层政府“编外扩张”的发生逻辑,应建构“厘定职责—依职定岗—循责定额—双规并行”的治理路径,并通过建立清晰规范的政府职责清单、划定编外人员的岗位范畴、动态化的编外人员额度核定、构建职责明确的编内编外规范化的双线管理模式等具体方式实现对“编外扩张”的治理。

关键词：基层政府编外扩张政府职责治理效能

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