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Critical prognostic value of the log odds of negative lymph nodes/tumor size in rectal cancer patients

World Journal of Clinical Cases 2021年第15期9卷 3531-3545页

作者： Jie-Bin Xie yue-Shan Pang Xun Li Xiao-Ting wu Department of Gastrointestinal Surgery West China HospitalSichuan UniversityChengdu 610041Sichuan ProvinceChina Department of Gastrointestinal Surgery Affiliated Hospital of North Sichuan Medical College ChinaNanchong 637200Sichuan ProvinceChina Department of Geriatrics The Second Clinical Medical College of North Sichuan Medical CollegeNanchong Central HospitalNanchong 637200Sichuan ProvinceChina

BACKGROUND The number of negative lymph nodes(NLNs)and tumor size are associated with prognosis in rectal cancer patients undergoing surgical ***,little is known about the prognostic significance of the NLN count after adjusting for tumor *** To assess the prognostic impact of the log odds of NLN/tumor size(LONS)in rectal cancer *** Data of patients with stage I–III rectal cancer were extracted from the Surveillance,Epidemiology,and End Results Program *** patients were randomly divided into a training cohort and a validation *** and multivariate Cox regression analyses were used to determine the prognostic value of the *** optimal cutoff values of LONS were calculated using the"X-tile"*** analysis of the effect of LONS on cancer-specific survival(CSS)and overall survival(OS)were *** Kaplan-Meier method with the log-rank test was used to plot the survival curve and compare the survival data among the different *** In all,41080 patients who met the inclusion criteria were randomly divided into a training cohort(n=28775,70%)and a validation cohort(n=12325,30%).Univariate and multivariate analyses identified the continuous variable LONS as an independent prognostic factor for CSS[training cohort:Hazard ratio(HR)=0.47,95%confidence interval(CI):0.44–0.51,P<0.001;validation cohort:HR=0.46,95%CI:0.41-0.52,P<0.001]and OS(training cohort:HR=0.53,95%CI:0.49-0.56,P<0.001;validation cohort:HR=0.52,95%CI:0.42-0.52,P<0.001).The Xtile program indicated that the difference in CSS was the most significant for LONS of-0.8,and the cutoff value of-0.4 can further distinguish patients with a better prognosis in the high LONS *** analysis of the effect of the categorical variable LONS on CSS and OS revealed that LONS was also an independent predictor,independent of pN stage,pT stage,tumor-node-metastasis stage,site,age,sex,the number of examined lymph nodes,race,preoperative ra

关键词： Rectal cancer Negative lymph nodes Negative lymph nodes/tumor size Prognosis Survival analysis Surveillance,Epidemiology,and End Results Program

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配电变压器数字孪生体构建技术研究

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供用电 2024年第1期41卷 42-49页

作者：吴琼李鸣高方玉朱佳航岳成磊孙永锋郎庆凯解玉文王振刚赵立涛李川李红云北京国网富达科技发展有限责任公司北京100070 中国电气装备集团有限公司上海200040

大规模新能源电力电子设备接入配电网后,给配电变压器的安全运行带来了谐波、偏磁等额外运行压力,亟须提高设备状态实时感知、精准评估和风险预警能力。基于物理层、数据层、映射层、仿真层、决策层5层架构,设计了以数据融合技术、统一... 详细信息

大规模新能源电力电子设备接入配电网后,给配电变压器的安全运行带来了谐波、偏磁等额外运行压力,亟须提高设备状态实时感知、精准评估和风险预警能力。基于物理层、数据层、映射层、仿真层、决策层5层架构,设计了以数据融合技术、统一信息模型技术、知识图谱技术为核心的配电变压器数字孪生平台。进行了变压器仿真建模实验,通过温升仿真、漏磁仿真和绕组涡流损耗仿真的实验,得到了精度较高且切合实际的仿真结果,验证了孪生体构建具有可行性。

关键词：配电网数字孪生变压器智慧配电网知识图谱

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Review of solvent based carbon-dioxide capture technologies

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Frontiers of Chemical Science and Engineering 2015年第2期9卷 125-141页

作者： Kathryn A. MUMFORD yue wu Kathryn H. SMITH Geoffrey W. STEVENS Peter Cook Centre for CCS Research Particulate Fluids Processing Centre Cooperative Centre for Greenhouse Gas Technologies Department of Chemical and Biomolecular Engineering The University of Melbourne Victoria Australia

Currently, a large proportion of global fossil fuel emissions originate from large point sources such as power generation or industrial processes. This trend is expected to continue until the year 2030 and beyond. Carbon capture and storage （CCS）, a straightforward and effective carbon reduction approach, will play a significant role in reducing emissions from these sources into the future if atmospheric carbon dioxide （CO2） emissions are to be stabilized and global warming limited below a threshold of 2 ℃. This review provides an update on the status of large scale integrated CCS technologies using solvent absorption for CO2 capture and provides an insight into the development of new solvents, including advanced amine solvents, amino acid salts, carbonate systems, aqueous ammonia, immiscible liquids and ionic liquids. These proposed new solvents aim to reduce the overall cost CO2 capture by improving the CO2 absorption rate, CO2 capture capacity, thereby reducing equipment size and decreasing the energy required for solvent regeneration.

关键词： carbon dioxide carbon capture solventabsorption large scale

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Adaptations of the floral characteristics and biomass allocation patterns of Gentiana hexaphylla to the altitudinal gradient of the eastern Qinghai-Tibet Plateau

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Journal of Mountain Science 2017年第8期14卷 1563-1576页

作者： HE Jun-dong XUE Jing-yue GAO Jing WANG Jin-niu wu Yan University of Chinese Academy of Sciences Chengdu Institute of Biology Chinese Academy of Sciences

This study addressed the floral component traits and biomass allocation patterns of Gentiana hexaphylla as well as the relationships of these parameters along an elevation gradient(approximately 3700 m, 3800 m, 3900 m, and 4000 m) on the eastern Qinghai-Tibet Plateau. The plant height, floral characteristics, and biomass allocation of G. hexaphylla were measured at different altitudes after field sampling, sorting, and drying. Plant height was significantly greater at 3700 m than that at other elevations. Flower length was significantly greater at 4000 m than that at other elevations, whereas the flower length at low elevations showed no significant differences. Corolla diameter increased with altitude, although the difference was not significant between 3800 m and 3900 m. Variations in biomass accumulation, including the aboveground, photosynthetic organ, flower and belowground biomasses, showed non-linear responses to changes in altitude. The aboveground and photosynthetic organ biomasses reached their lowest values at 4000 m, whereas the belowground and flower biomassreached minimum values at 3700 m. The sexual reproductive allocation of G. hexaphylla also increased with altitude, with a maximum observed at 4000 m. These results suggest that external environmental factors and altitudinal gradients as well as the biomass accumulation and allocation of G. hexaphylla play crucial roles in plant traits and significantly affect the ability of this species to adapt to harsh environments. The decreased number of flowers observed at higher altitudes may indicate a compensatory response for the lack of pollinators at high elevations, which is also suggested by the deformed flower shapes at high altitudes. In addition, the individual plant biomass(i.e., plant size) had significantly effect on flower length and corolla diameter. Based on the organ biomass results, the optimal altitude for G. hexaphylla in the eastern Qinghai-Tibet Plateau is 3800 m, where the plant exhibits

关键词： Biomass allocation, Reproductivestrategy Altitudinal gradient Alpine meadows Floralcharacteristics Gentiana hexaphylla

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Highly selective conversion of methane to ethanol over CuFe_(2)O_(4)-carbon nanotube catalysts at low temperature

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Chinese Chemical Letters 2022年第1期33卷 390-393页

作者： Xinquan Shen Dan wu Xian-zhu Fu Jing-Li Luo Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional MaterialsCollege of Materials Science EngineeringShenzhen UniversityShenzhen 518071China Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China

Conversion of methane into liquid alcohol such as ethanol at low temperature in a straight,selective and low energy consumption process remains a topic of intense scientific research but a great *** this work,CuFe_(2)O_(4)/CNT composite is successfully synthesized via a facile co-reduction method and used as catalysts to selectively oxidize *** a low temperature of 150℃,methane is directly converted to ethanol in a single process on the as-prepared CuFe_(2)O_(4)/CNT composite with high selectivity.A mechanism is also proposed for the significant methane selective oxidation performance of the CuFe_(2)O_(4)/CNT composite catalysts.

关键词： Methane Ethanol High selectivity Synergistic effect Catalysis

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Crystallization kinetics and magnetization behavior of RE_(3.5)Fe_(66.5)Co_(10)B_(20)(RE=Pr, Nd) nanocomposite ribbons

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Rare Metals 2014年第6期33卷 681-685页

作者： Qiong wu Peng-yue Zhang Min-Xiang Pan Dong-Yun Li Hong-Liang Ge Magnetism Key Laboratory of Zhejiang Province College of Materials Science and Engineering China Jiliang University

The influence of hard magnetic phase on the crystallization kinetics and magnetization behavior in nanocomposite RE3.5Fe66.5Co10B20（RE = Pr, Nd） ribbons prepared by melt-spinning was studied. Differential scanning calorimeter（DSC） measurement of the as-cast meltspun amorphous ribbons during the crystallization process shows that precipitation energy of Pr2Fe14 B phase is higher than that for Nd2Fe14 B phase, confirmed by X-ray diffraction（XRD） patterns. It can be explained by the different radii of Pr and Nd atoms. Scanning electron microscopy（SEM）images indicate that the average grain size in Pr3.5Fe66.5Co10B20 ribbon is smaller than that in Nd3.5Fe66.5Co10B20,resulting in an enhancement of exchange coupling between hard and soft phases. It is responsible for the better hard magnetic properties in Pr3.5Fe66.5Co10B20. In addition, the process of magnetization reversal of nanocomposite RE3.5Fe66.5Co10B20（RE = Pr, Nd） ribbons was discussed in detail by the recoil loops.

关键词： Nanocomposite rare-earth magnets Crystallization kinetics Magnetization behavior

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亚波长光栅与法布里-珀罗滤光片集成的高性能光谱偏振分光器

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红外与毫米波学报 2024年第2期43卷 179-186页

作者：朱远宇关学昱余沛其刘清权贾奇祥吴杰李辰璐李志锋王少伟中国科学院上海技术物理研究所红外物理国家重点实验室上海200083 上海科技大学物质学院上海201210 上海节能镀膜玻璃工程技术研究中心上海200083 中国科学院大学北京100049

光谱偏振成像技术是一种新型的光学成像技术,它不仅提高了目标的信息获取量,还降低了背景噪声,可以捕获目标细节,检测伪装目标。本文提出了一种将亚波长光栅与F-P滤光片相结合的光谱偏振测量器件,该器件可以获得超高光谱分辨率和偏振消... 详细信息

光谱偏振成像技术是一种新型的光学成像技术,它不仅提高了目标的信息获取量,还降低了背景噪声,可以捕获目标细节,检测伪装目标。本文提出了一种将亚波长光栅与F-P滤光片相结合的光谱偏振测量器件,该器件可以获得超高光谱分辨率和偏振消光比,并且光谱和偏振可以灵活调控。本文设计了一种光谱偏振同时分光器,可同时获得4个光谱通道的斯托克斯参数。仿真结果表明,其光谱分辨率为217,偏振消光比为106。实验结果表明,亚波长光栅的偏振消光比大于500,透射率为90%。全介质F-P滤光片的光谱分辨率为30,在长波红外波段的透射率为60%。该设计方法具有通用性,可用于可见光、红外甚至太赫兹等波段。得益于这些优点,器件在微型偏振光谱仪和全斯托克斯偏振检测等领域有很大的应用潜力。

关键词：光谱偏振分光器亚波长光栅法布里-珀罗滤光片光谱偏振

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Ceria supported Ru^(0)-Ru^(δ+) clusters as efficient catalyst for arenes hydrogenation

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Chinese Chemical Letters 2021年第2期32卷 770-774页

作者： Yanwei Cao Huan Zheng Gangli zhu Haihong wu Lin He State Key Laboratory for Oxo Synthesis and Selective Oxidation(OSSO) Suzhou Research Institute of LICPLanzhou Institute of Chemical Physics(LICP)Chinese Academy of Sciences(CAS)Lanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China Henan Province Key Laboratory of New Opto-Elecrronic Functional Materials College of Chemistry and Chemical EngineeringAnyang Normal UniversityAnyang 455000China

Selective hydrogenation of aromatic amines,especially chemicals such as aniline and bis(4-aminocyclohexyl)methane for non-yellowing polyurethane,is of particular interests due to the extensive *** conquer the existing difficulties,in selective hydrogenation,,the Ru^(0)-Ru^(δ+)/CeO2 catalyst with solid frustrated Lewis pairs was developed for aromatic amines hydrogenation with excellent activity and selectivity under relative milder *** morphology,electronic and chemical properties,especially the Ru^(O)-Ru^(δ+) clusters and reducible ceria were characterized by X-ray diffraction(XRD),transmission electron microscopy(TEM),sca nning electronic microscopy(SEM),X-ray photoelectron sp ectroscopy(XPS),CO_(2) tempe rature programmed deso rption(CO_(2)-TPD),H_(2) tempe rature programmed reduction(H_(2)-TPR),H_(2) diffuse reflectance Fourier transform infrared spectroscopy(H_(2)-DRIFT),Raman,*** 2% Ru/CeO_(2) catalyst exhibited good conversion of 95% and selectivity greater than 99% toward *** volcano curve describing the activity and Ru state was *** to the "acidic site isolation" by surrounding alkaline sites,condensation between the neighboring amine molecules could be effectively *** catalyst also showed good stability and applicability for other aromatic amines and heteroarenes containing different functional groups.

关键词： Ceria Ruthenium Clusters Amines Hydrogenation

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Synthesis of a novel C-branched polyhydroxylated cyclic nitrone

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Chinese Chemical Letters 2017年第4期28卷 909-912页

作者： Qing-Kun wu Yi-Xian Li yue-Mei Jia Chu-Yi Yu Beijing National Laboratory for Molecular Science (BNLMS) CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China University of Chinese Academy of Sciences Beijing 100049 China National Engineering Research Center for Carbohydrate Synthesis Jiangxi Normal University Nanchang 330022 China

A novel C-branched polyhydroxylated cyclic nitrone *** could be a valuable intermediate for the synthesis of C-branched pyrrolidine iminosugars,was synthesized starting from the commercially available i.-arabinose in ... 详细信息

关键词： Cyclic nitrone Branched chain Iminosugars Azasugars Polyhydroxylated pyrrolidine

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The revised distance of supernova remnant G15.4+0.1

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Research in Astronomy and Astrophysics 2017年第10期17卷 109-112页

作者： Hong-Quan Su Meng-Fei Zhang Hui zhu Dan wu Key Laboratory of Optical Astronomy National Astronomical Observatories Chinese Academy of Sciences University of Chinese Academy of Sciences International Centre for Radio Astronomy Research Curtin University College of Information Science & Technology Beijing Normal University

We measure the distance to the supernova remnant G15.4±0.1 which is likely associated with TeV source HESS J1818-154. We build the neutral hydrogen （HI） absorption and 13CO spectra for supernova remnant G 15.4±0.1 by employing data from the Southern Galactic Plane Survey （SGPS） and the HI/OH/Recombination line survey （THOR）. The maximum absorption velocity of about 140 km s-1 constrains the lower limit of its distance to about 8.0 kpc. Further, the fact that the HI emission feature at about 95 km s-1 seems to have no corresponding absorption suggests that G 15.4±0.1 likely has an upper limit for distance of about 10.5 kpc. The 13CO spectrum for the remnant supports our measurement. The new distance provides revised parameters on its associated pulsar wind nebula and TeV source.

关键词： ISM: supernova remnants -- methods: data analysis -- stars: distances

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