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Effect of lanthanum on inclusions in non-oriented electrical steel slabs

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Journal of Iron and Steel Research International 2024年第7期31卷 1680-1691页

作者： Qiang Ren Zhi-yuan Hu yun-xia liu Wei-cheng Zhang Zi-qi Gao Li-feng Zhang School of Mechanical Engineering Yanshan UniversityQinhuangdao 066004HebeiChina School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China Research and Development Department Shougang Zhixin Qian'an Electromagnetic Material Co.Ltd.Qian'an 064400HebeiChina School of Mechanical and Materials Engineering North China University of TechnologyBeijing 100144China

The effect of lanthanum on the characteristics of inclusions in the slab of non-oriented electrical steels was investigated through industrial trials and thermodynamic *** number,size,and chemical composition of inclusions in the surface,one-quarter of thickness and the center of slabs with and without lanthanum addition were statistically analyzed using an automatic inclusion analysis *** the lanthanum-free slab,inclusions were predominately ***_(2)O_(3),MgO,and AlN as well as a small number of Al_(2)O_(3)-MgO-CaO and *** number densities of oxide inclusions and AlN decreased from the surface to the center of the slab,which was ascribed to the difference in cooling intensity during the continuous *** the steel with lanthanum addition,inclusions were modified into LaAlO_(3) and La_(2)O_(2)S and gradually transformed into dual-phase MgO-La_(2)S3 with an increasing distance from the slab surface due to the reaction between the lanthanum-containing inclusion and the steel *** uneven distribution of oxide inclusions along the thickness of the slab was eliminated in the lanthanum-bearing slab because the dissolved oxygen was remarkably decreased by ***-bearing inclusions were more likely to agglomerate AlN by inducing the heterogeneous nucleation of AlN on their surface,while small-size ***_(2)O_(3) inclusions hardly showed a coarsening effect on the size of AlN.

关键词： Lanthanum-Inclusion Non-oriented electrical steel Aluminum nitride Heterogenous nucleation

Effects of Paclitaxel-conjugated N-SuccinyI-Hydroxyethyl Chitosan Film for Proliferative Cholangitis in Rabbit Biliary Stricture Model

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Chinese Medical Journal 2018年第6期131卷 696-703页

作者： Tao Wang Hao Zou yun-xia liu xiao-Wen Zhang Department of Hepatopancreatobiliary Surgery The Second Affiliated Hospital of Kunming Medical University Kunming Yunnan 650101 China Graduate Division Kunming Medical University Kunming Yunnan 650500 China Basic Medical Division Experiment Teaching Center Kunming Medical University Kunming Yunnan 650500 China

Background： Paclitaxel （PTX） could inhibit the growth of fibroblasts, which occurs in proliferative cholangitis and leads to biliary stricture. However, its use has been limited due to poor bioavailability and local administration for short time. This study designed and synthesized a new PTX-conjugated chitosan film （N-succinyl-hydroxyethyl chitosan containing PTX [PTX-SHEC]） and evaluated its safety and efficiency using in vivo and in vitro experiments. Methods： The SHEC conjugated with PTX was confirmed by nuclear magnetic resonance （NMR） and Fourier-transform infrared spectroscopy （FT-IR） measurements. Drug releases in vitro and in vivo were determined using high-performance liquid chromatography. Cell viability in vitro was measured using 3-（4,5-dimethylthiazol-2-yl）-2,5-diphenyltetrazolium bromide. Rabbit biliary stricture model was constructed. All rabbits randomly divided into five groups （n = 8 in each group）： the sham-operated rabbits were used as control （Group A）, Groups B received laparotomies and suture, Group C received laparotomies and covered SHEC suture without the PTX coating, Group D received laparotomies and covered PTX-SHEC suture, and Group E received laparotomies and 1000 μmol/L PTX administration. Liver function tests and residual dosage of PTX from each group were measured by enzyme-linked immunosorbent assay. Histological data and a-smooth muscle actin （SMA） immunohistochemical staining of common bile duct were examined. Results： NMR and FT-1R indicated that PTX was successfully introduced, based on the appearance of signals at 7.41-7.99 ppm, 1.50 ppm, and 1.03 ppm, due to the presence of aromatic protons, methylene protons, and methyl protons of PTX, respectively. No bile leak was observed. The PTX-conjugated film could slowly release PTX for 4 weeks （8.89 ± 0.03/ag at day 30）. The in vitro cell viability test revealed significantly different levels of toxicity between films with and without PTX （[ 11.7± 4.0% vs. 68. l±6.0%, P 〈 0.001 ）, w

关键词： Biliary Stricture Chitosan Paclitaxel ProliferativeCholangitis Slow-Releasing

CaH2-promoted activity of Ni-carbonate interface for CO2 methanation

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Journal of Energy Chemistry 2025年第1期100卷 522-532页

作者： Jin-Peng Wang Guo-Cui Mao Hui-Lin Jiang Bao-xia Dong yun-Lei Teng School of Chemistry and Chemical Engineering Yangzhou University

Transition metal-carbonate interfaces often act as active sites in heterogeneous catalytic *** interface between transition metal and metal carbonate exhibits a dynamic equilibrium during the CO2hydrogenation reaction,involving surface carbonate hydrogenation and ***,there have been few reports on engineering the activity of the interface between transition metal and alkaline earth metal carbonate for catalytic *** work demonstrated that the incorporation of CaH2in Ni/CaCO3enhances the CO2methanation activity of the *** CO2conversion for Ni/CaH2-CaCO3reached 68.5%at 400°C,which was much higher than that of the Ni/CaCO3（31.6%） and Ni/CaH2-CaO （42.4%） ***,the Ni/CaH2-CaCO3catalysts remained stable during the stability test for 24 h at 400°C and 8 *** research revealed that CaH2played a crucial role in promoting the activity of the Ni-carbonate interface for ***2could modify the electronic structure of Ni and tune the structural properties of CaCO3to generate medium basic sites （OH groups）,which are favorable for the activation of H2and ***-situ Fourier transform infrared spectroscopy （FTIR） analysis combined with density functional theory calculations demonstrated that CO2activation occurs at the hydroxyl group （OH） on the CaH2-modified Ni-carbonate surface,leading to the formation of CO3H****,our study has confirmed that CO2methanation over the Ni/CaH2-CaCO3catalysts proceeds via the formate pathway.

关键词： Metal hydride Ni catalysts Carbonate Metal-carbonate interface

康柏西普对提高湿性老年性黄斑变性患者视力的临床效果分析

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国际眼科杂志 2015年第11期15卷 1881-1883页

作者：朱振流刘云霞中国山东省安丘市人民医院眼科 262100 中国山东省安丘市人民医院急诊科 262100

目的:观察康柏西普对提高湿性老年性黄斑变性患者视力的临床效果。方法:临床纳入湿性老年性黄斑变性患者70例70眼,根据治疗方案的不同分为研究组与对照组。对照组给予曲安奈德注射液玻璃体腔注射,研究组给予康柏西普注射液玻璃体腔注射... 详细信息

目的:观察康柏西普对提高湿性老年性黄斑变性患者视力的临床效果。方法:临床纳入湿性老年性黄斑变性患者70例70眼,根据治疗方案的不同分为研究组与对照组。对照组给予曲安奈德注射液玻璃体腔注射,研究组给予康柏西普注射液玻璃体腔注射。观察两组患者治疗前后裸眼视力变化情况、阅读能力评分、视网膜黄斑色素密度等。结果:治疗后6mo,1a,研究组视力分别为0.47±0.11、0.60±0.14,对照组视力分别为0.27±0.09、0.30±0.15,两组比较差异有统计学意义(P<0.05);治疗后6mo,1a,研究组黄斑中心凹视网膜厚度分别为336.8±65.4、301.5±76.8μm,对照组黄斑中心凹视网膜厚度分别为379.4±88.2、368.6±81.3μm,两组比较差异有统计学意义(P<0.05);治疗后6mo,1a,研究组视网膜黄斑色素密度分别为0.19±0.07、0.25±0.09DU;对照组视网膜黄斑色素密度分别为0.12±0.05、0.14±0.05DU,两组比较差异有统计学意义(P<0.05)。结论:玻璃体腔注射康柏西普注射液治疗湿性老年性黄斑变性,具有较好的临床效果,能够显著提高患者裸眼视力,值得推广。

关键词：康柏西普黄斑变性老年视力

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广义伪余扭曲余代数

数学的实践与认识 2016年第20期46卷 223-228页

作者：于云霞刘红江新乡学院数学系河南新乡453007 河南应用技术职业学院基础教学部河南郑州450042

研究了余扭曲子的性质,并给出余扭曲子的推广形式-伪余扭曲子,进而给出了伪余扭曲子上的广义伪余扭曲余代数.

关键词：余扭曲子伪余扭曲子广义伪余扭曲余代数

基于森林空间收获问题的模拟退火算法邻域搜索技术比较

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北京林业大学学报 2017年第8期39卷 24-32页

作者：董灵波孙云霞刘兆刚东北林业大学林学院

邻域搜索是当前提高启发式算法求解效率的核心技术之一,然而近期关于该搜索策略的性能却产生了较大争议。模拟退火算法作为一种典型的启发式算法,已广泛应用于一系列的林业规划问题。为此,本研究以模拟退火算法为例,系统评估2种不同邻... 详细信息

邻域搜索是当前提高启发式算法求解效率的核心技术之一,然而近期关于该搜索策略的性能却产生了较大争议。模拟退火算法作为一种典型的启发式算法,已广泛应用于一系列的林业规划问题。为此,本研究以模拟退火算法为例,系统评估2种不同邻域搜索技术在森林空间收获安排问题中的应用效果。规划模型以50年规划周期(10个规划分期)内的最大化木材收获为目标函数,以蓄积均衡收获、蓄积期末存量、单位限制模型和绿量限制等为主要约束条件。测试方法以模拟退火算法为原型,以每次优化过程中随机选择的小班数量为标准,共包括1-邻域和2-邻域2种不同的搜索技术。模拟规划数据由3个假设的栅格数据集组成,其共产生了3 293个(林分Ⅰ)、29 536个(林分Ⅱ)和81 625个(林分Ⅲ)0-1型决策变量。研究结果表明:模拟退火算法2-邻域搜索技术能够提高各规划问题的最大目标函数值;但当规划问题的决策变量数(或小班数量)较大时(即林分数量≥3 600),单纯增加邻域范围并不能提高规划问题的平均目标函数值。因此,鉴于模拟退火算法的优化结果对规划问题具有较高的敏感性,因此森林经营决策人员应慎重选择模拟退火算法邻域搜索作为相关规划问题的优化求解技术。

关键词：邻接约束绿量约束森林收获安排模拟退火算法邻域搜索

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基于碳和木材目标的森林空间经营规划研究

北京林业大学学报 2017年第1期39卷 52-61页

作者：董灵波孙云霞刘兆刚东北林业大学林学院

以大兴安岭地区塔河林业局盘古林场为例,以模拟退火算法为优化技术,以经济收益为基础,建立能够兼顾森林木材生产、碳储量和经营措施时空分布的多目标规划模型。规划周期由3个10年的分期组成,目标函数包括最大化木材和碳储量贴现净收益... 详细信息

以大兴安岭地区塔河林业局盘古林场为例,以模拟退火算法为优化技术,以经济收益为基础,建立能够兼顾森林木材生产、碳储量和经营措施时空分布的多目标规划模型。规划周期由3个10年的分期组成,目标函数包括最大化木材和碳储量贴现净收益、最小化采伐成本,而约束条件则主要涉及最小收获年龄、收获次数、收获均衡以及空间邻接约束等。同时,还评估了一系列碳价格对规划结果的影响。结果表明:由于规划模型中空间和非空间约束的限制,规划期内获得的各种经济收益、木材产量以及碳储量等均随着碳价格的增加呈显著的非线性变化趋势;与碳价格为0元/t时的规划结果相比,当碳价格为我国当前现行碳交易的平均(25元/t)和最高(50元/t)价格时,规划期末的总经济收益分别增加了2.06%和3.91%,但规划期内木材产量和碳储量却无显著差异;如果仅从经济角度考虑,则能够使规划期末单位面积碳储量增加的最低碳价格为1 000元/t。同时,研究结果还表明碳价格虽然显著影响规划期内不同经营措施的采伐面积比例,但规划结果均满足均衡收获约束。

关键词：森林规划碳储量木材生产经济价值空间约束

Mitigation of metal-mediated losses in plasmonic solar cells

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Mitigation of metal-mediated losses in plasmonic solar cells

Recombinant chitinase-3-like protein 1 alleviates learning and memory impairments via M2 microglia polarization in postoperative cognitive dysfunction mice

甘肃省化学会第二十八届年会暨第十届中学化学教学经验交流会

作者： Yi-Fan Huang Ze-Ling Zhang Kai-Bin Kang Min Zhao Ting Wen yun-xia liu Xin-Ping Zhai Shuang-Kun Lv Qiang Wang Wen-Yuan Qiu Dong Qiu Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province College of Chemistry and Chemical EngineeringLanzhou University .Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province College of Chemistry and Chemical EngineeringLanzhou University Beijing National Laboratory for Molecular Sciences(BNLMS) State Key Laboratory of Polymer Physics and ChemistryInstitute of ChemistryChinese Academy of Sciences

Previous studies have concentrated on harnessing surface plasmonic effects of metallic nanoparticles(NPs) to improve polymer solar cell *** ample examples have evidenced the viability of this methodology,the adverse effect of device photocurrent reduction via the intrinsic metal-mediated losses of plasmonic metal NPs,which hampers further enhancement of device efficiency,has been rarely *** address this issue,we herein embedded Au NPs coated with dielectric SiCh layer into polymer solar cells attempting to reduce negative effects of these metallic nanostructures and thus increase photovoltaic photocurrent and *** constructed inverted polymer solar cell based on poly(3-hexylthiophene) and[6,6]-phenyl-C61-butyric acid methyl ester,and blended Au NPs coated with SiO layer,i.e.,Au@Si02 core-shell nanostructures into the active *** with plasmonic solar cells embedded with sole Au NPs,the device incorporating Au@SiO core-shell nanostructures indeed exhibited significantly augmented photocurrent density,though not a superior overall *** photocurrent density increase is attributed to the dielectric layer coating Au NPs,which mitigates metal-mediated losses such as exciton quenching probably induced by the electron accumulation on the metallic surface,but meanwhile is thin enough to maintain the plasmonic effects of the gold core upon *** study provides new insights into strategies harnessing plasmonic nanostructures to enhance photovoltaic performance,i.e.,the balance between plasmonic effects and metal-mediated losses has to be comprehensively evaluated.

关键词： Inverted polymer solar cell electron accumulation metal-mediated losses plasmonic nanostructures core-shell LSPR P3HT PCBM

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Neural Regeneration Research 2025年第9期20卷 2727-2736页

作者： Yujia liu Xue Han Yan Su Yiming Zhou Minhui Xu Jiyan Xu Zhengliang Ma xiaoping Gu Tianjiao xia Department of Anesthesiology Nanjing Drum Tower HospitalAffiliated Hospital of Medical SchoolNanjing UniversityNanjingJiangsu ProvinceChina Medical School Nanjing UniversityNanjingJiangsu ProvinceChina Jiangsu Key Laboratory of Molecular Medicine Nanjing UniversityNanjingJiangsu ProvinceChina State Key Laboratory of Pharmaceutical Biotechnology Nanjing UniversityNanjingJiangsu ProvinceChina Department of Anesthesiology Zhongshan HospitalFudan UniversityShanghaiChina

Postoperative cognitive dysfunction is a seve re complication of the central nervous system that occurs after anesthesia and surgery,and has received attention for its high incidence and effect on the quality of life of *** date,there are no viable treatment options for postoperative cognitive *** identification of postoperative cognitive dysfunction hub genes could provide new research directions and therapeutic targets for future *** identify the signaling mechanisms contributing to postoperative cognitive dysfunction,we first conducted Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathway enrichment analyses of the Gene Expression Omnibus GSE95426 dataset,which consists of mRNAs and long non-coding RNAs differentially expressed in mouse hippocampus3 days after tibial *** dataset was enriched in genes associated with the biological process"regulation of immune cells,"of which Chill was identified as a hub ***,we investigated the contribution of chitinase-3-like protein 1 protein expression changes to postoperative cognitive dysfunction in the mouse model of tibial fractu re *** were intraperitoneally injected with vehicle or recombinant chitinase-3-like protein 124 hours post-surgery,and the injection groups were compared with untreated control mice for learning and memory capacities using the Y-maze and fear conditioning *** addition,protein expression levels of proinflammatory factors(interleukin-1βand inducible nitric oxide synthase),M2-type macrophage markers(CD206 and arginase-1),and cognition-related proteins(brain-derived neurotropic factor and phosphorylated NMDA receptor subunit NR2B)were measured in hippocampus by western *** with recombinant chitinase-3-like protein 1 prevented surgery-induced cognitive impairment,downregulated interleukin-1βand nducible nitric oxide synthase expression,and upregulated CD206,arginase-1,pNR2B,and brain-derived neurotropic factor expr

关键词： Chil1 hippocampus learning and memory M2 microglia neuroinflammation postoperative cognitive dysfunction(POCD) recombinant CHI3L1