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Construction of a predictive model for gastric cancer neuroaggression and clinical validation analysis: A single-center retrospective study

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World Journal of Gastrointestinal Surgery 2024年第8期16卷 2602-2611页

作者： Yu-yin lan Jing Han Yan-Yan Liu Lei lan Department of Stomatology Shanghai Municipal Hospital of Traditional Chinese MedicineShanghai University of Traditional Chinese MedicineShanghai 200071China Department of Biobank Zhejiang Cancer HospitalHangzhou 310005Zhejiang ProvinceChina Department of General Surgery Peking University First HospitalBeijing 100034China Department of Oncology Zhejiang HospitalHangzhou 310013Zhejiang ProvinceChina

BACKGROUND This study investigated the construction and clinical validation of a predictive model for neuroaggression in patients with gastric *** cancer is one of the most common malignant tumors in the world,and neuroinvasion is the key factor affecting the prognosis of ***,there is a lack of systematic analysis on the construction and clinical application of its prediction *** study adopted a single-center retrospective study method,collected a large amo-unt of clinical data,and applied statistics and machine learning technology to build and verify an effective prediction model for neuroaggression,with a view to providing scientific basis for clinical treatment decisions and improving the tr-eatment effect and survival rate of patients with gastric *** To investigate the value of a model based on clinical data,spectral computed to-mography(CT)parameters and image omics characteristics for the preoperative prediction of nerve invasion in patients with gastric *** A retrospective analysis was performed on 80 gastric cancer patients who under-went preoperative energy spectrum CT at our hospital between January 2022 and August 2023,these patients were divided into a positive group and a negative group according to their pathological *** data were collected,the energy spectrum parameters of primary gastric cancer lesions were measured,and single factor analysis was performed.A total of 214 image omics features were extracted from two-phase mixed energy images,and the features were screened by single factor analysis and a support vector *** variables with statist-ically significant differences were included in logistic regression analysis to construct a prediction model,and the performance of the model was evaluated using the subject working characteristic *** were statistically significant differences in sex,carbohydrate antigen 199 expression,tumor thickness,Lauren classification

关键词： Gastric neoplasms Nerve invasion Tomography X-ray computer Imaging omics Diagnostic differentiation

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The utilization of chitosan/Bletilla striata hydrogels to elevate anti-adhesion,anti-inflammatory and pro-angiogenesis properties of polypropylene mesh in abdominal wall repair

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Regenerative Biomaterials 2024年第4期3卷 111-124页

作者： Yuntao Di Lu Wang Wei He Shuyan Liu Yuqi He Jie Liao Ruihong Zhang lan yin Zhiwei Xu Xiaoming Li Department of Neurosurgery The Fourth Central Hospital of Baoding CityBaoding 072350China Research Center for Biomedical Engineering Medical Innovation&Research DivisionChinese PLA General HospitalKey Laboratory of Biomedical Engineering and Translational MedicineMinistry of Industry and Information TechnologyBeijing 100853China Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education Beijing Advanced Innovation Center for Biomedical EngineeringSchool of Biological Science and Medical EngineeringBeihang UniversityBeijing 100083China College of Lab Medicine Hebei North UniversityZhangjiakou 075000China Key Laboratory of Advanced Materials of Ministry of Education Tsinghua UniversityBeijing 100084China

Polypropylene(PP)mesh is commonly used in abdominal wall repair due to its ability to reduce the risk of organ damage,infections and other ***,the PP mesh often leads to adhesion formation and does not promote functional tissue *** this study,we synthesized one kind of aldehyde Bletilla striata polysaccharide(BSPA)modified chitosan(CS)hydrogel based on Schiff base *** hydrogel exhibited a porous network structure,a highly hydrophilic surface and good *** wrapped the PP mesh inside the hydrogel and evaluated the performance of the resulting composites in a bilateral 1×1.5cm abdominal wall defect model in *** results of gross observation,histological staining and immunohistochemical staining demonstrated the positive impact of the CS hydrogel on anti-adhesion and wound healing ***,the addition of BSPA to the CS hydrogel further improved the performance of the composites in vivo,promoting wound healing by enhancing collagen deposition and capillary *** study suggested that the BSPA-modified CS hydrogel significantly promoted the anti-adhesion,anti-inflammatory and pro-angiogenesis properties of PP meshes during the healing ***,this work offers a novel approach to the design of abdominal wall repair patches.

关键词： abdominal wall wound healing hydrogel Bletilla striata anti-adhesion

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Numerical study of plasmas start-up by electron cyclotron waves in NCST spherical tokamak and CN-H1 stellarator

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Plasma Science and Technology 2024年第7期26卷 12-22页

作者：刘亿卓行郑平卫龚学余尹岚陈小昌钟翊君杨文军 School of Nuclear Science and Technology University of South ChinaHengyang 421001People’s Republic of China School of Resource Environmentand Safety EngineeringUniversity of South ChinaHengyang 421001People’s Republic of China School of Electrical Engineering University of South ChinaHengyang 421001People’s Republic of China School of Physics and Materials Nanchang UniversityNanchang 330031People’s Republic of China

According to the physics of tokamak start-up,this study constructs a zero-dimensional(0D)model applicable to electron cyclotron(EC)wave assisted start-up in NCST spherical torus(spherical tokamak)and CN-H1 *** the constructed 0D model,the results obtained in this study under the same conditions are compared and validated against reference results for pure hydrogen plasma start-up in *** results are in good agreement,especially regarding electron temperature,ion temperature and plasma *** the presence of finite Ohmic electric field in the spherical tokamak,a study on the EC wave assisted start-up of the NCST plasma at frequency of 28 GHz is *** impact of the vertical magnetic field B_(v)on EC wave assisted start-up,the relationship between EC wave injection power P_(inj),Ohmic electric field E,and initial hydrogen atom density n_(H0)are explored *** is found that under conditions of Ohmic electric field lower than ITER(~0.3 V m^(-1)),EC wave can expand the operational space to achieve better plasma *** the process of28 GHz EC wave start-up in the CN-H1 stellarator plasma,the plasma current in the zerodimensional model is replaced with the current in the poloidal coil of the *** startup can be successfully achieved at injection powers in the hundreds of kilowatts range,resulting in electron densities on the order of 10^(17)-10^(18)m^(-3).

关键词： spherical torus stellarator electron cyclotron wave start-up 0D model

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智能变电站运维管理关键技术

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通信电源技术 2024年第2期41卷 215-217页

作者：尹兰国网河南省电力公司开封供电公司河南开封475000

智能变电站是电力系统的重要组成部分,其运行状况直接关系到电力系统的稳定性和安全性。近年来,随着智能电网技术的不断发展,智能变电站的运维管理也面临着越来越多的挑战。因此,加强智能变电站运维管理关键技术的研究和分析,对于提高... 详细信息

智能变电站是电力系统的重要组成部分,其运行状况直接关系到电力系统的稳定性和安全性。近年来,随着智能电网技术的不断发展,智能变电站的运维管理也面临着越来越多的挑战。因此,加强智能变电站运维管理关键技术的研究和分析,对于提高电力系统的运行效率,保障电力系统的安全稳定具有重要意义。基于此,分析介绍了智能变电站的概念、特点以及运维管理关键技术等。通过对智能变电站的深入研究,旨在提高电力系统的运行效率,保障电力系统的安全性和稳定性。

关键词：智能变电站运维管理关键技术

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浅析矿山生态环境破坏问题及生态修复技术方法

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皮革制作与环保科技 2024年第8期5卷 160-162页

作者：兰银广西桂和环境科技有限公司广西南宁530000

以促进矿区生态环境恢复、解决采矿活动造成的环境破坏问题为目标,研究关注矿山生态环境保护中面临的诸多挑战,包括森林砍伐和生物多样性丧失、土壤侵蚀和土地退化、水污染和枯竭、空气污染和温室气体排放四个主要方面,进而针对矿山生... 详细信息

以促进矿区生态环境恢复、解决采矿活动造成的环境破坏问题为目标,研究关注矿山生态环境保护中面临的诸多挑战,包括森林砍伐和生物多样性丧失、土壤侵蚀和土地退化、水污染和枯竭、空气污染和温室气体排放四个主要方面,进而针对矿山生态环境破坏问题提出具体的生态修复技术方法,主要涉及重新造林和恢复栖息地、土壤保护和修复、水资源管理和处理、空气质量控制和减排。希望通过研究指导解决矿山生态环境破坏问题,加速矿区生态修复,从而促进资源开采和生态保护之间的和谐共存。

关键词：矿山生态环境破坏问题生态修复技术方法

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Phonon Stability of Quantum Droplets in Dipolar Bose Gases

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Chinese Physics Letters 2022年第6期39卷 52-57页

作者： Fan Zhang lan yin School of Physics Peking UniversityBeijing 100871China

Stabilized by quantum fluctuations,dipolar Bose–Einstein condensates can form self-bound liquid-like *** in the Bogoliubov theory,there are imaginary phonon energies in the long-wavelength limit,implying dynamical instability of this system.A similar instability appears in the Bogoliubov theory of a binary quantum droplet,and is removed due to higher-order quantum fluctuations as shown recently[Gu Q and yin L 2020 ***.B 102220503(R)].We study the excitation energy of a dipolar quantum droplet in the Beliaev formalism,and find that quantum fluctuations significantly enhance the phonon *** adopt a self-consistent approach without the problem of complex excitation energy in the Bogoliubov theory,and obtain a stable anisotropic sound velocity which is consistent with the superfluid hydrodynamic theory,but slightly different from the result of the extended Gross–Pitaevskii equation due to quantum depletion.A modified Gross–Pitaevskii equation in agreement with the Beliaev theory is proposed,which takes the effect of quantum fluctuations into account more completely.

关键词： stability quantum excitation

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基于Attention-LSTM-XGBoost的电极移动速度影响放电参数预测分析

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电波科学学报 2024年第2期39卷 287-295页

作者：何秀思阮方鸣徐愷尹兰王文利贵州师范大学大数据与计算机科学学院贵阳550025 六盘水职业技术学院六盘水553000

基于具有Attention机制的长短期记忆(attention long short-term memory,Attention-LSTM)神经网络模型,设计了一种由Attention-LSTM神经网络与极端的梯度增强(extreme gradient boosting,XGBoost)法共同组成的变权组合模型,用以分析预测静电放电过程中电极移动速度对放电参数造成的影响。该组合模型充分利用静电放电参数的时序特性,并采用Attention机制突出对放电参数预测起到关键作用的输入特征。首先基于由新型电极移动速度效应测试仪的实验结果提供的原始实验数据,采用分箱法对其进行预处理得到新的实验数据;然后将得到的新实验数据集作为两种模型的输入数据,分开训练Attention-LSTM模型和XGBoost模型,求解出各自模型的预测结果及误差;最后利用误差倒数法,重新计算出两种模型预测结果的占比权重,并根据计算的权重求解出最终预测结果。预测结果表明:与Attention-LSTM神经网络模型、XGBoost模型、Attention-LSTMXGBoost定权组合模型相比,本文构建的Attention-LSTM-XGBoost变权组合模型,评估指标中的决定系数分别提升了5.22%、9.11%、3.13%。本文提出的变权组合模型在预测精度以及算法鲁棒性上均优于其他模型,有益于对小间隙静电放电参数变化趋势和规律的探寻。

关键词：静电放电电极移动速度 Attention机制长短期记忆(LSTM)神经网络误差倒数法

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Self-Bound Quantum Droplet with Internal Stripe Structure in One-Dimensional Spin-Orbit-Coupled Bose Gas

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Chinese Physics Letters 2021年第7期38卷 1-5页

作者： Yuncheng Xiong lan yin School of Physics Peking UniversityBeijing 100871China

We study the quantum-droplet state in a three-dimensional(3D)Bose gas in the presence of 1D spin-orbit coupling and Raman coupling,especially the stripe phase with density modulation,by numerically computing the ground state energy including the mean-field energy and Lee-Huang-Yang *** this droplet state,the stripe can exist in a wider range of Raman coupling,compared with the BEC-gas *** intriguingly,both spin-orbit coupling and Raman coupling strengths can be used to tune the droplet density.

关键词： density state coupling

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鞣花酸对下石节长焰煤氧化自燃的阻化影响研究

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中国安全科学学报 2024年第8期34卷 78-85页

作者：肖旸南世华尹岚李青蔚王振平西安科技大学安全科学与工程学院陕西西安710054 西安科技大学陕西省煤火灾害防治重点实验室陕西西安710054

为考察鞣花酸(EA)对煤氧化自燃过程的影响,首先将EA与陕西铜川下石节煤矿的长焰煤以2%、4%、6%、8%和10%的质量比均匀混合进行试验;然后采用显微红外光谱试验和激光导热试验研究各个样品的活性官能团含量情况和热输运特性,通过评价煤氧... 详细信息

为考察鞣花酸(EA)对煤氧化自燃过程的影响,首先将EA与陕西铜川下石节煤矿的长焰煤以2%、4%、6%、8%和10%的质量比均匀混合进行试验;然后采用显微红外光谱试验和激光导热试验研究各个样品的活性官能团含量情况和热输运特性,通过评价煤氧化自燃抑制效果,确定最优质量比为8%;最后利用煤自燃程序升温试验对比4种阻化剂对煤氧化自燃气体释放的影响情况,进一步确定EA对煤氧化自燃的阻化程度。结果表明:EA处理煤(EA-tc)中-CH_(3)、-CH_(2)、-OH和-C=O-的峰面积相较于原煤(RC)均减少,但C-O的峰面积增加;在相同煤温下,RC的热扩散系数和导热系数高于EA-tc,其比热容低于EA-tc,且8%EA对RC低温氧化过程的热扩散系数、比热容和导热系数的平均抑制率分别为20.8%、9.8%和13.1%;相比于RC,8%EA-tc的CO释放量在170℃时降低52.3%,且EA对煤氧化自燃的阻化率在30~170℃内保持在50.5%~72.5%,说明EA对煤氧化自燃的阻化效果比其他3种阻化剂更好。

关键词：鞣花酸(EA) 煤氧化自燃阻化率热输运特性活性官能团

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新时代体育科普高质量发展研究

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吉林体育学院学报 2024年第3期40卷 64-71页

作者：兰堙陈丽霞陕西师范大学体育学院陕西西安710119

体育科普是我国科技创新战略的重要组成部分,高质量发展是全面建设社会主义现代化国家的首要任务,新时代体育科普高质量发展是落实全民健身计划,实现体育强国建设伟大目标的重要方式与途径。通过文献资料法和逻辑分析法,明确新时代体育... 详细信息

体育科普是我国科技创新战略的重要组成部分,高质量发展是全面建设社会主义现代化国家的首要任务,新时代体育科普高质量发展是落实全民健身计划,实现体育强国建设伟大目标的重要方式与途径。通过文献资料法和逻辑分析法,明确新时代体育科普高质量发展内涵特征和动力机制,进一步探究体育科普高质量发展的实践桎梏和推进策略。经研究发现,新时代体育科普高质量发展内容要素包含体育科普政策、人才、环境、技术、文化、项目五个方面,同时新时代体育科普面临体育科普观念初步形成,体育科普专业人才单一,体育科普政策法规粗化,体育科普技术尚待完善,体育科普产业融合不足,体育科普体系仍未构建等实践桎梏。为进一步推动新时代体育科普高质量发展,要深科普观念、育科普人才、细科普政策,融现代科技、推科普产业、构科普体系、弘优秀文化。

关键词：体育科普高质量发展新时代体育强国

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