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Experimental and DFT study on cerium inclusions in clean steels

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Journal of Rare Earths 2021年第4期39卷 477-486页

作者： Xiangjun Liu Jichun Yang fang Zhang Xiaoyang Fu hongwei Li Changqiao Yang School of Materials and Metallurgy Inner Mongolia University of Science and TechnologyBaotou 014010China School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China National-Provincial Joint Engineering Research Center for Comprehensive Utilization of Symbiotic-Associated Mineral Waste Resources in Bayan Obo Inner Mongolia University of Science and TechnologyBaotou 014010China

To provide insights into deforming Ce-O-S-Al inclusions in steels and improving the mechanical properties,the evolution process of such harmful inclusions in clean steels was investigated by thermodynamic calculation,metallographic examination and first-principles calculation in this *** the tested IF steel,the thermodynamic analysis results are consistent with the calculated formation *** Ce addition,the inclusions are transformed from Al_(2)O_(3)and TiN-Al_(2)TiO_(5)-Al_(2)O_(3)to Ce2O_(3),Ce_(2)O_(2)S,CeAlO_(3),TiN-Al_(2)TiO_(5)-Ce_(2)O_(3)and TiN-Al_(2)TiO_(5)-Ce_(2)O_(2)S composite inclusions,which can be confirmed by metallographic *** elastic constants were calculated,and the bulk modulus,Young's modulus,shear modulus and Poisson's ratio were evaluated by the Voigt-Reuss-Hill(VRH)*** inclusions except Ce_(2)O_(3)show apparent ***,Al_(2)O_(3),Al_(2)TiO_(5)and CeAlO_(3)present much higher hardness than iron matrix,while the hardness of Ce2O_(3)or Ce_(2)O_(2)S is close to that of iron *** thermal expansion coefficients of Ce_(2)O_(3)and CeAlO_(3)are close to that of iron matrix,whereas,Ce_(2)O_(2)S inclusion has largely different thermal expansion coefficient from iron matrix and may deteriorate the steel performance at higher *** relatively small differences between Ce inclusions and iron matrix in terms of hardness,toughness,brittleness,and thermal expansion coefficient can explain the improvement of the mechanical properties of the tested steel.

关键词： Thermodynamic analysis Inclusions modification First-principles calculation Thermal expansion coefficient Micro crack initiation mechanism Rare earths

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主成分分析法在水质评价中的应用及分析

环境科学与管理 2009年第12期34卷 152-154页

作者：方红卫孙世群朱雨龙肖中新施帆君合肥工业大学资源与环境工程学院安徽合肥230009 安徽亚泰环境工程技术有限公司安徽合肥230088 安徽省环境监测中心站安徽合肥230061

针对主成分分析能够从众多因子中筛选出主要成分,对数据结构进行简化,为后续工作筛选主要因子提供依据等优点,分别介绍了主成分分析法的原理和步骤,并将其应用于水质评价中。以淮河安徽段干流的十一个断面为例,选取了八个因子进行分析... 详细信息

针对主成分分析能够从众多因子中筛选出主要成分,对数据结构进行简化,为后续工作筛选主要因子提供依据等优点,分别介绍了主成分分析法的原理和步骤,并将其应用于水质评价中。以淮河安徽段干流的十一个断面为例,选取了八个因子进行分析研究。结果表明:对涉及因子较多,且因子间相关性相对较大的水质进行评价时主成分分析法是一种有效的方法。

关键词：水质综合评价主成分分析法因子主成分贡献率

Optical Rotation Detection for Atomic Spin Precession Using a Superluminescent Diode

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Photonic Sensors 2019年第2期9卷 135-141页

作者： Xuejing LIU Yang LI hongwei CAI Ming DING Jiancheng fang Wei JIN School of Inst ru men ta tion Science and Opto-electronics Engineering Beihang University Beijing 100191 China

A superluminescent diode (SLD) as an alternative of laser is used to detect optical rotation for atomic spin precession. A more uniform Gauss configuration without additional beam shaping and a relatively high power of the SLD have a potential for atomic magnetometers, which is demonstrated in theory and experiments. In addition, the robustness and compactness enable a more practical way for optical rotation detections, especially for applications in magnetoencephalography systems.

关键词： Superluminescent diode atomic magnetometer magnetoencephalography atomic spin precessiondetection Larmor precession

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云粒子图像高速采集与实时存储系统

北京信息科技大学学报（自然科学版） 2016年第4期31卷 27-30,44页

作者：方宏伟焦瑞莉陈家田雷恒池北京信息科技大学信息与通信工程学院北京100101 中国科学院大气物理研究所北京100029

设计了一个基于高速CCD相机及激光照明的云粒子图像高速采集与实时存储系统。由粒子监测系统产生外触发信号,CCD相机与脉冲激光器被同步触发,CCD相机采集图像数据并通过采集卡处理传输到电脑。同时,基于Open CV编写了图像处理程序,对图... 详细信息

设计了一个基于高速CCD相机及激光照明的云粒子图像高速采集与实时存储系统。由粒子监测系统产生外触发信号,CCD相机与脉冲激光器被同步触发,CCD相机采集图像数据并通过采集卡处理传输到电脑。同时,基于Open CV编写了图像处理程序,对图像中的粒子进行提取并存储。该系统的图像采集速率可达100 fps,并且能保证采集及存储不丢帧,可以无损存储采集的高清粒子图像,粒子提取操作减少了图像冗余数据。

关键词： CCD相机激光照明云粒子检测高清粒子图像

基于倾向性匹配法分析颅内动脉瘤介入术后缺血并发症的危险因素

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立体定向和功能性神经外科杂志 2023年第3期36卷 157-163页

作者：赵军马云云方洪伟范贝贝王钟玄陆青春吴胜波中国人民解放军陆军第946医院神经外科新疆伊宁835000

目的利用倾向性匹配法分析颅内动脉瘤介入术后缺血并发症的危险因素。方法回顾性分析本院2018年12月~2021年12月收治的245例颅内动脉瘤介入术患者的临床资料,其中术后缺血并发症54例。以1:1比例基于倾向性匹配法对混杂因素进行均衡处理... 详细信息

目的利用倾向性匹配法分析颅内动脉瘤介入术后缺血并发症的危险因素。方法回顾性分析本院2018年12月~2021年12月收治的245例颅内动脉瘤介入术患者的临床资料,其中术后缺血并发症54例。以1:1比例基于倾向性匹配法对混杂因素进行均衡处理,匹配后缺血并发症发生组和未发生组各52例。比较匹配前后缺血并发症发生与未发生患者的一般资料,对匹配后的数据进行Logistic回归分析探讨缺血并发症的危险因素。结果缺血并发症发生率为22.04%(54/245);年龄(OR=2.959,95%CI:2.009~3.910)、有吸烟史(OR=3.196,95%CI:2.095~4.298)、有饮酒史(OR=3.572,95%CI:2.252~4.891)、合并糖尿病(OR=3.873,95%CI:2.568~5.178)、合并高血压(OR=4.255,95%CI:3.041~5.468)、合并高脂血症(OR=4.802,95%CI:3.428~6.176)、动脉瘤直径(OR=6.848,95%CI:5.233~8.463)、术前动脉瘤破裂(OR=7.501,95%CI:6.066~8.935)、Hunt-Hess III~IV级(OR=9.043,95%CI:7.636~10.450)、合并血肿(OR=6.508,95%CI:4.928~8.088)均是缺血并发症的危险因素。结论颅内动脉瘤介入术后缺血并发症发生风险高,年龄、有吸烟史、有饮酒史、合并糖尿病、合并高血压、合并高脂血症、动脉瘤直径、术前动脉瘤破裂、Hunt-Hess III~IV级、合并血肿均是其危险因素。

关键词：倾向性匹配颅内动脉瘤介入术缺血并发症

骶管减压髂腰螺钉内固定联合补阳还五汤加减口服治疗孤立性骶骨U形骨折合并马尾神经和骶神经损伤1例

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中医正骨 2020年第10期32卷 71-74,78页

作者：袁登荣方弘伟黄晓东高骏薛建喜金华市中医医院浙江金华321017

骶骨U形骨折是一种特殊类型的骶骨骨折,临床十分少见,而孤立性骶骨U形骨折合并马尾神经损伤则更罕见,国内报道极少。2019年3月,我们收治1例此类型损伤患者,采用骶管减压髂腰螺钉内固定联合补阳还五汤加减口服治疗,现报告如下。

关键词：骶骨骨折马尾周围神经损伤骨折固定术,内补阳还五汤病例报告

煤气化粗渣制多孔吸附材料对亚甲基蓝的吸附研究

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宁夏工程技术 2023年第3期22卷 225-231页

作者：方宏伟徐荣声程慧清王恒宇冯倩北方民族大学化学与化学工程学院宁夏银川750021 北方民族大学国家民委化工技术基础重点实验室宁夏银川750021

以煤气化粗渣为原料,分别采用化学法(酸化高温法)和物理法(超声波法)对其进行微观扩孔,并对扩孔后的吸附材料(G1和C1)进行表面改性,制备出改性后的吸附材料G2和C2。利用SEM,BET,XRD和FT-IR对吸附材料的表面形貌、微观结构和官能团组成... 详细信息

以煤气化粗渣为原料,分别采用化学法(酸化高温法)和物理法(超声波法)对其进行微观扩孔,并对扩孔后的吸附材料(G1和C1)进行表面改性,制备出改性后的吸附材料G2和C2。利用SEM,BET,XRD和FT-IR对吸附材料的表面形貌、微观结构和官能团组成等进行表征分析,并研究4种吸附材料对水溶液中亚甲基蓝(MB)的吸附特性。结果表明,在同等实验条件下,所制备的4种吸附材料均具有介孔特性,但C1,C2比G1,G2具有更大的比表面积和总孔容,比表面积和总孔容表现为C1>C2>G1>G2。各吸附材料表面均含有以絮状物质形式存在的无定形碳。G1,G2表面粗糙,孔结构丰富,大量的无定形碳阻塞了孔道;而C1,C2表面粗糙且存在明显的断裂层和裂隙孔,孔道结构丰富。MB吸附实验表明,4种吸附材料对MB的吸附效果表现为C1>C2>G1>G2,因材料改性剂影响了样品中Si—O键的含量,阻塞了孔结构,未能明显改善材料的吸附性能。在25℃下,4种吸附材料(用量为100 mg)对浓度为60 mg/L、体积100 mL的MB溶液进行吸附,其吸附过程均符合伪二阶动力学模型和颗粒内扩散模型。在实验条件下,物理法处理后的气化粗渣在孔结构和吸附能力方面均比用化学法处理后的气化粗渣更具有优势。

关键词：煤气化粗渣超声波法吸附材料亚甲基蓝

Efficient and reversible separation of NH_(3) by deep eutectic solvents with multiple active sites and low viscosities

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Chinese Journal of Chemical Engineering 2024年第3期67卷 97-105页

作者： Jiayin Zhang Lu Zheng Siqi fang hongwei Zhang Zhenping Cai Kuan Huang Lilong Jiang National Engineering Research Center of Chemical Fertilizer Catalyst(NERC-CFC) College of Chemical EngineeringFuzhou UniversityFuzhou 350002China Qingyuan Innovation Laboratory Quanzhou 362801China

The efficient separation and collection of ammonia(NH_(3))during NH_(3) synthesis process is essential to improve the economic efficiency and protect the *** this work,ethanolammonium hydrochloride(EtOHACl)and phenol(PhOH)were used to prepare a novel class of deep eutectic solvents(DESs)with multiple active sites and low *** NH_(3) separation performance of EtOHACl+PhOH DESs was analyzed *** is figured out that the NH_(3) absorption rates in EtOHACl+PhOH DESs are very *** NH_(3) absorption capacities are very high and reach up to 5.52 and 10.74 mol·kg1 at 11.2 and 100.4 kPa under 298.2 K,*** addition,the EtOHACl+PhOH DESs present highly selective absorption of NH_(3) over N_(2) and H_(2) and good regenerative properties after seven cycles of absorption/*** intrinsic separation mechanism of NH_(3) by EtOHACl+PhOH DESs was further revealed by spectroscopic analysis and quantum chemistry calculations.

关键词： Separation Absorption Ionic liquid Deep eutectic solvent Multiple active site Low viscosity

Revolutionizing tumor immunotherapy:unleashing the power of progenitor exhausted T cells

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Cancer Biology & Medicine 2024年第6期21卷 499-512页

作者： Zhang fang Xinyi Ding Hao Huang hongwei Jiang Jingting Jiang Xiao Zheng Department of Tumor Biological Treatment The Third Affiliated Hospital of Soochow UniversityChangzhou 213003China Jiangsu Engineering Research Center for Tumor Immunotherapy The Third Affiliated Hospital of Soochow UniversityChangzhou 213003China Institute for Cell Therapy of Soochow University The Third Affiliated Hospital of Soochow UniversityChangzhou 213003China

In exploring persistent infections and malignancies, a distinctive subgroup of CD8^(+) T cells, progenitor exhausted CD8^(+) T(Tpex) cells, has been identified. These Tpex cells are notable for their remarkable self-renewal and rapid proliferation abilities. Recent strides in immunotherapy have demonstrated that Tpex cells expand and differentiate into responsive exhausted CD8^(+) T cells, thus underscoring their critical role in the immunotherapeutic retort. Clinical examinations have further clarified a robust positive correlation between the proportional abundance of Tpex cells and enhanced clinical prognosis. Tpex cells have found noteworthy applications in the formulation of inventive immunotherapeutic approaches against tumors. This review describes the functions of Tpex cells in the tumor milieu, particularly their potential utility in tumor immunotherapy. Precisely directing Tpex cells may be essential to achieving successful outcomes in immunotherapy against tumors.

关键词： Progenitor exhausted CD8^(+)T cells TCF-1 immunotherapy tumor microenvironment cellular crosstalk