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Textural differences based on apparent diffusion coefficient maps for discriminating pT3 subclasses of rectal adenocarcinoma

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World Journal of Clinical Cases 2021年第24期9卷 6987-6998页

作者： Zhi-Hua Lu Kai-Jian Xia heng jiang Jian-Long jiang Mei Wu Department of Radiology Changshu Hospital Affiliated to Soochow UniversityChangshu No.1 People's HospitalChangshu 215500Jiangsu ProvinceChina Department of Information Changshu Hospital Affiliated to Soochow UniversityChangshu No.1 People's HospitalChangshu 215500Jiangsu ProvinceChina Department of Surgery Changshu Hospital Affiliated to Soochow UniversityChangshu No.1 People's HospitalChangshu 215500Jiangsu ProvinceChina Department of Pathology Changshu Hospital Affiliated to Soochow UniversityChangshu No.1 People's HospitalChangshu 215500Jiangsu ProvinceChina

BACKGROUND The accuracy of discriminating pT3a from pT3b-c rectal cancer using highresolution magnetic resonance imaging(MRI)remains unsatisfactory,although texture analysis(TA)could improve such *** To investigate the value of TA on apparent diffusion coefficient(ADC)maps in differentiating pT3a rectal adenocarcinomas from pT3b-c *** This was a case-control study of 59 patients with pT3 rectal adenocarcinoma,who underwent diffusion-weighted imaging(DWI)between October 2016 and December *** inclusion criteria were:(1)Proven pT3 rectal adenocarcinoma;(2)Primary MRI including high-resolution T2-weighted image(T2WI)and DWI;and(3)Availability of pathological reports for surgical *** exclusion criteria were:(1)Poor image quality;(2)Preoperative chemoradiation therapy;and(3)A different pathological ***-order(ADC values,skewness,kurtosis,and uniformity)and second-order(energy,entropy,inertia,and correlation)texture features were derived from whole-lesion ADC *** operating characteristic curves were used to determine the diagnostic value for pT3b-c *** The final study population consisted of 59 patients(34 men and 25 women),with a median age of 66 years(range,41-85 years).Thirty patients had pT3a,24 had pT3b,and five had *** the ADC first-order textural differences between pT3a and pT3b-c rectal adenocarcinomas,only skewness was significantly lower in the pT3a tumors than in pT3b-c *** the ADC second-order textural differences,energy and entropy were significantly different between pT3a and pT3b-c rectal *** differentiating pT3a rectal adenocarcinomas from pT3b-c tumors,the areas under the curves(AUCs)of skewness,energy,and entropy were 0.686,0.657,and 0.747,*** regression analysis of all three features yielded a greater AUC(0.775)in differentiating pT3a rectal adenocarcinomas from pT3b-c tumors(69.0%sensitivity and 83.3%specificity).CONCLUSION TA features

关键词： Diffusion-weighted imaging Apparent diffusion coefficient Rectal cancer Cancer stage Texture analysis case-control study

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4种夏栎对低温胁迫的生理响应及抗寒性评价

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河北大学学报（自然科学版） 2024年第4期44卷 406-413页

作者：姜恒张志刚杨建军李斌王兴胜张晓红新疆大学生态与环境学院绿洲生态教育部重点实验室新疆乌鲁木齐830017 自然资源部荒漠-绿洲生态监测与修复工程技术创新中心新疆乌鲁木齐830002 新疆林业科学院造林治沙研究所新疆林木资源与利用国家林草局重点实验室新疆乌鲁木齐830000 伊犁州林木良种繁育试验中心新疆察布查尔835311

为探究低温胁迫下夏栎(Quercus robur)生理指标的响应及抗寒性,以普通夏栎、速生夏栎、裂叶夏栎和垂枝夏栎为实验材料,测定在不同温度下细胞膜通透性、超氧化物歧化酶(SOD)、过氧化物酶(POD)、可溶性蛋白等指标,并利用拟合Logistic方程... 详细信息

为探究低温胁迫下夏栎(Quercus robur)生理指标的响应及抗寒性,以普通夏栎、速生夏栎、裂叶夏栎和垂枝夏栎为实验材料,测定在不同温度下细胞膜通透性、超氧化物歧化酶(SOD)、过氧化物酶(POD)、可溶性蛋白等指标,并利用拟合Logistic方程计算半致死温度,结合隶属函数法对4种夏栎综合评价.结果表明:4种夏栎细胞膜通透性均随着温度降低而增加,SOD和POD活性以及可溶性蛋白、脯氨酸和丙二醛(MDA)含量均逐渐下降;4种夏栎半致死温度为-41.9~-38.2℃,其中普通夏栎半致死温度最低,速生夏栎半致死温度最高;4种夏栎抗寒性强弱为普通夏栎>垂枝夏栎>裂叶夏栎>速生夏栎.综上可知,普通夏栎抗寒性最强,在不同地区推广和繁育具有显著优势.

关键词：夏栎抗寒性隶属函数法生理指标半致死温度

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Metastasis to the thyroid gland from primary breast cancer presenting as diffuse goiter:A case report and review of literature

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World Journal of Clinical Cases 2022年第3期10卷 1106-1115页

作者： Wen Wen heng jiang Hsin-Yu Wen Yu-Lan Peng Department of Ultrasound West China HospitalSichuan UniversityChengdu 610041Sichuan ProvinceChina College of Medicine University of Nebraska Medical CenterOmahaNE 68133United States Department of Pathology West China HospitalSichuan UniversityChengdu 610041Sichuan ProvinceChina

BACKGROUND Metastasis to the thyroid gland(TM)from primary breast cancer is uncommon and usually presents as thyroid nodules;however,diffuse goiter without thyroid nodules is the first sign of TM in rare *** metastases(SMs)to the lymph nodes in breast cancer,defined as discontiguous higher-level metastases in the absence of lower levels of contiguous metastases,have been reported in the contralateral cervical area of the primary tumor site in rare *** SUMMARY A 49-year-old previously healthy Chinese woman was diagnosed with right lateral invasive ductal carcinoma and underwent neoadjuvant chemotherapy treatment and bilateral mastectomy with axillary lymph node *** malignancy of the left breast or axillary or distant metastases were identified ***,enlarged left cervical lymph nodes were detected 36 mo after surgery,and rapidly enlarging thyroid glands without nodules were detected 42 mo after ***-needle aspiration cytology was performed on the left cervical lymph nodes and left lobe of the thyroid,which were both revealed to contain metastases from the primary breast ***,the immunostaining profiles changed in the process of *** patient was discharged with the NP(vinorelbine and cisplatin)regimen for subsequent treatment,and stable disease was determined when the curative effect was *** Diffuse goiter may be the first sign of TM,and enlarged lymph nodes in the contralateral cervical area may be SMs of primary breast cancer.

关键词： Metastases to the thyroid gland Diffuse goiter Cervical lymph node recurrence Breast cancer Case report

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洞庭湖水文对流域干旱情势的响应及归因分析

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水利水电技术（中英文） 2024年第5期55卷 60-70页

作者：刘志文申幸志钱湛姜恒李峰曾静耿明明田恬湖南省洞庭湖防洪及水资源保障工程技术研究中心湖南省水利水电勘测设计规划研究总院有限公司湖南长沙410007 中国科学院亚热带农业生态研究所亚热带农业生态过程重点实验室洞庭湖湿地生态系统观测研究站湖南长沙410125 湖南农业大学环境与生态学院湖南长沙410128

【目的】极端气候变化加剧了通江湖泊水文情势的波动性,亟需从流域视角探究流域干旱情势对通江湖泊水文环境的影响。【方法】以我国典型通江湖泊洞庭湖及洞庭湖流域为研究对象,选取2010—2020年及2022年极端干旱情景下洞庭湖流域5个代... 详细信息

【目的】极端气候变化加剧了通江湖泊水文情势的波动性,亟需从流域视角探究流域干旱情势对通江湖泊水文环境的影响。【方法】以我国典型通江湖泊洞庭湖及洞庭湖流域为研究对象,选取2010—2020年及2022年极端干旱情景下洞庭湖流域5个代表性气象水文站的降水量、温度、水位等数据,结合水文趋势分析、标准化降水指数(SPI)和回归分析等方法,对洞庭湖流域和湖泊的气象水文演变特征、干旱情势以及湖泊水位与流域干旱情势的响应关系进行了全面分析。【结果】结果表明,研究期间洞庭湖流域降水量呈小幅上升趋势,流域温度变化趋势不显著,但澧水流域温度总体较低,变化范围16.07~17.41℃。洞庭湖水位总体呈波动上升趋势,变化在23.63~25.81 m。洞庭湖流域SPI指数变化在-0.86~0.31,正常和轻旱年份占比分别为91%和9%。流域年内干旱情势总体呈先升后降变化趋势,正常和湿润等级频率分别变化在0.18%~0.64%和0.18%~0.36%。洞庭湖水位与流域降水和径流量呈显著正相关,与温度呈显著负相关。2022年洞庭湖水位呈先升后降变化趋势,6月达到年内水位最高值(30.45 m)后骤降。2022年1—6月洞庭湖流域干旱情势总体处于湿润和正常等级,后降至中旱和重旱等级。【结论】洞庭湖流域年际干旱情况多为正常年份,其余为轻旱年份。与多年月均水位相比,2022年极端干旱情景下洞庭湖水位峰值由往年7月提前至6月,随后水位骤降。此外,4月、5月、7月洞庭湖水位与流域SPI指数显著相关,反映了当前月份湖泊水位对流域干旱情势的深度响应,刻画了流域降水异常引起的洞庭湖“夏旱”特征。以上结果可为水文及农业部门应对气象灾害、实施农业生产保护措施等提供科学参考。

关键词：洞庭湖流域干旱降雨水位驱动机制

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NUMERICAL STUDY ON SALINITY STRATIFICATION IN THE OUjiang RIVER ESTUARY

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Journal of Hydrodynamics 2009年第6期21卷 835-842页

作者： jiang heng-zhi SHEN Yong-ming WANG Shou-dong State Key Laboratory of Coastal and Offshore Engineering Dalian University of Technology Dalian 116024 China Transport Planning and Research Institute Beijing 100048 China

The variations of current, salt intrusion and vertical stratification under different conditions of river flow and wind in the Oujiang River Estuary （ORE） were investigated in this article using the Environmental Fluid Dynamics Code （EFDC）. The model was verified against water level variation, velocity, and salinity variations in June 2005. The simulation results agreed well with measured data. Six sensitivity tests were conducted for different conditions of river flow and wind specified in the model. Model results show that salinity intrudes further upstream under scenarios with low flow and downriver local wind conditions. In contrast, the responses of salinity stratification to different environmental forcing functions were different in different portions of the estuary. Salinity stratification was enhanced under high flow condition. Model results also show that wind is not crucial to the salt intrusion and salinity stratification in the ORE.

关键词： salinity stratification wind river discharge Oujiang River Estuary(ORE)

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基于概率精英差分和自适应黄金正弦的鲸鱼优化算法

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计算机工程与设计 2024年第10期45卷 2944-2952页

作者：李克文李国庆崔雪丽牛小楠蒋衡杰中国石油大学(华东)计算机科学与技术学院山东青岛266580

针对鲸鱼优化算法收敛速度慢和寻优精度低的缺点,提出一种基于概率精英差分和自适应黄金正弦的鲸鱼优化算法。基于最大最小思想优化拉丁超立方体抽样来初始化鲸鱼种群,使初始种群分布更加均匀,拥有更好的全局搜索能力;提出融合余弦自适... 详细信息

针对鲸鱼优化算法收敛速度慢和寻优精度低的缺点,提出一种基于概率精英差分和自适应黄金正弦的鲸鱼优化算法。基于最大最小思想优化拉丁超立方体抽样来初始化鲸鱼种群,使初始种群分布更加均匀,拥有更好的全局搜索能力;提出融合余弦自适应算子的黄金正弦算法改进鲸鱼的螺旋更新,加快收敛速度,提高收敛精度;设计概率精英差分变异方法并进行贪婪选择,优化算法流程,增强算法跳出陷入局部最优的能力。选取4个单峰测试函数、4个多峰测试函数和5个多最优解的多模态测试函数与主流优化算法进行对比实验,实验结果表明,该算法具有更高的寻优精度、更快的收敛速度以及更优的全局搜索能力,通过消融实验验证了该算法改进策略的有效性。

关键词：鲸鱼优化算法群智能优化拉丁超立方体抽样差分变异贪婪策略余弦自适应策略黄金正弦算法

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Nb_(2)CT_(x)MXene boosting PEO polymer electrolyte for all-solid-state Li-S batteries:two birds with one stone strategy to enhance Li+conductivity and polysulfide adsorptivity

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稀有金属:英文版 2023年第8期42卷 2562-2576页

作者： Si-Ming Liu Meng-Xun Chen Ying Xie Deng-Hua Liu Jin-Fei Zheng Xiang Xiong heng jiang Li-Chang Wang heng Luo Kai Han State Key Laboratory for Powder Metallurgy College of Chemistry and Chemical EngineeringCentral South UniversityChangsha 410083China Shinghwa Advanced Material Group Co. LtdDongying 257500China School of Physics and Electronics Central South UniversityChangsha 410083China Department of Chemistry Oregon State UniversityCorvallis OR 97331-4003USA School of Geosciences and Info-Physics Central South UniversityChangsha 410083China

All-solid-state lithium-sulfur(Li-S)battery is regarded as next-generation high energy density and safety battery *** key challenge is to develop a compatible high-performance solid-state ***,a two birds with one stone strategy is proposed to simultaneously enhance Li+conductivity and polysulfide adsorptivity of poly(ethylene oxide)(PEO)-based polymer electrolyte via the integration of Nb_(2)CT_(x)***,the sheet size of Nb_(2)CT_(x)MXene is crucial for the enhancement of Li^(+)conductivity and polysulfide adsorptivity,attributing to the difference in a specific surface area related to the percolation *** tuning the sheet size of Nb_(2)CT_(x)MXene from 500-300 nm to below 100 nm,the ionic conductivity of the PEO electrolyte is increased to2.62×10^(-4)S·cm^(-1)with improved Li+transference number of 0.37 at ***,theoretical calculation and X-ray photoelectron spectroscopy(XPS)conjointly prove that poly sulfides could be effectively adsorbed by Nb2CTxnanosheets via forming Nb-S bonding to inhibit their shuttle in the PEO *** a result,the all-solid-state Li-S cell exhibits an initial capacity of 1149 mAh·g^(-1)at 0.5C and good cycling stability with 491 mAh·g^(-1)after 200 *** results demonstrate the necessity of polysulfide inhibition and the application of Nb_(2)CT_(x)MXene in PEO-based electrolytes for all-solid-state Li-S batteries.

关键词： All-solid-state Li-S batteries Polyethylene oxide(PEO)-based electrolyte Nb_(2)CT,MXene Shuttle effect inhibition

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Synthesis and Luminescent Properties of LuAG:Ce^(3+) Transparent Ceramics by Solvo-Thermal Method

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光谱学与光谱分析 2011年第2期31卷 308-313页

作者： WANG Lin-xiang ZHU heng-jiang WU Ling-yuan DENG Kai-mo GUO Chang-xin YIN Min Physics Department University of Science and Technology of China Hefei 230026 China Department of Physics Xinjiang Normal University Urumqi 830054 China Hefei National Laboratory for Physical Sciences at Microscale Chinese Academy of Sciences Hefei 230026 China

The precursor powders of LuAG∶Ce3+ transparent ceramics were synthesized by solvo-thermal *** crystal structure and morphology of powders were analyzed by means of Fourier transform infra-red spectroscopy,X-ray diffraction and scanning electron *** precursor powders were sintered into transparent ceramics in vacuum and then in nitrogen without any *** surface morphology of the transparent unpolished ceramics was characterized using scanning electron *** factors that affect the transparency of ceramics were *** UV-Vis fluorescence excitation and emission spectra of LuAG∶Ce3+ transparent ceramics were *** vacuum ultraviolet spectra of transparent ceramics were investigated using the synchrotron radiation as the excitation *** excitation mechanism of Ce3+ was discussed at different excitation wavelength.

关键词： Solvo-thermal LuAG∶Ce3+ Transparent ceramics Photoluminescence

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300 MW CFB锅炉旋风分离器改造数值模拟研究

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电力科技与环保 2024年第1期40卷 87-94页

作者：姜恒谢玉婷刘海玉牛俊天太原理工大学山西太原030024

旋风分离器分离性能会显著影响循环流化床锅炉的运行。为解决某300 MW循环流化床锅炉旋风分离器分离器性能差的问题,基于欧拉-拉格朗日框架,使用UGNX12.0软件对该300 MW循环流化床锅炉的炉膛、旋风分离器、返料阀按照实际尺寸1∶1建立... 详细信息

旋风分离器分离性能会显著影响循环流化床锅炉的运行。为解决某300 MW循环流化床锅炉旋风分离器分离器性能差的问题,基于欧拉-拉格朗日框架,使用UGNX12.0软件对该300 MW循环流化床锅炉的炉膛、旋风分离器、返料阀按照实际尺寸1∶1建立全回路几何模型,根据实际参数设置边界条件,并通过Barracuda软件进行数值模拟,分析旋风分离器烟道入口各参数(入口烟道高度、入口烟道宽度、入口下倾角大小及中心筒插入深度)对旋风分离器效率及压降的影响;综合考虑分离器的分离效率、压降以及磨损量,提出了2个改造方案。仿真结果表明:炉膛内压力模拟值与实际值的偏差均在5%以内,模拟结果较为精确;2个方案在各负荷下均能提升旋风分离器分离性能,方案1满负荷下效率相较于较改造前提升了0.260%,压降降低了13.1 Pa,方案2满负荷下效率相较于改造前提升了0.240%,压降降低了53.7 Pa;随着负荷降低,旋风分离器效率提升逐渐不明显,在300、260和160 MW负荷下,方案1分别提升0.263%、0.178%和0.023%,方案2分别提升0.243%、0.174%和0.020%。

关键词： 300 MW CFB锅炉旋风分离器数值模拟

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Intelligent computing budget allocation for on-road tra jectory planning based on candidate curves

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Frontiers of Information Technology & Electronic Engineering 2016年第6期17卷 553-565页

作者： Xiao-xin FU Yong-heng jiang De-xian HUANG Jing-chun WANG Kai-sheng HUANG Department of Automation Tsinghua University Department of Automotive Engineering Tsinghua University

In this paper, on-road trajectory planning is solved by introducing intelligent computing budget allocation(ICBA) into a candidate-curve-based planning algorithm, namely, ordinal-optimization-based differential evolution(OODE). The proposed algorithm is named IOODE with ‘I' representing ICBA. OODE plans the trajectory in two parts: trajectory curve and acceleration profile. The best trajectory curve is picked from a set of candidate curves, where each curve is evaluated by solving a subproblem with the differential evolution(DE) algorithm. The more iterations DE performs, the more accurate the evaluation will become. Thus, we intelligently allocate the iterations to individual curves so as to reduce the total number of iterations performed. Meanwhile, the selected best curve is ensured to be one of the truly top curves with a high enough probability. Simulation results show that IOODE is 20% faster than OODE while maintaining the same performance in terms of solution quality. The computing budget allocation framework presented in this paper can also be used to enhance the efficiency of other candidate-curve-based planning methods.

关键词： Intelligent computing budget allocation Trajectory planning On-road planning Intelligent vehicles Ordinal optimization

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