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The influence of a.ding niobium a.d va.a.ium on hydrogen diffusion in 22MnB5 hot sta.ping steel

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Journa. of iron a.d Steel Resea.ch(interna.iona.) 2023年第10期30卷 2031-2042页

作者： Peng-wei Zhou Zhi-yi Ya. Ke Wa.g Ta. Liu si-jia.Chen Zhen ma Ju-sha ma Wei Ding Yi Luo Bing-ga.g Liu Wei Li shangha. institute of Spa.e Power-Sources Shanghai 200245China Sta.e Key La. of Meta. matrix Composites School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200245China

a.ding a.loying elements is a.wa.s considered a. a. effective method to enha.ce the resista.ce a.a.nst hydrogen embrittlement in *** a.d V were a.ded into 22MnB5 hot sta.ping steel,a.d then their influences on hydrogen permea.ion of 22MnB5 steel suffering from corrosion in 3.5%Na.l a.ueous solution were *** results showed tha. the a.dition of Nb/V could reduce the hydrogen permea.ion content due to solution *** techniques including electrochemica. impeda.ce spectroscopy a.d overpotentia. stepping hydrogen permea.ion test con-firmed tha. compa.ed to the origina. 22MnB5 steel,22MnB5-NbN steel owned a.higher corrosion resista.ce a.d a.higher hydrogen diffusion ***,it wa. confirmed tha. Nb-V-a.loyed 22MnB5 steel showed higher resista.ce a.a.nst hydrogen embrittlement tha. the Nb-V-free counterpa.t,which should be rela.ed to the presentence of na.osca.ed Nb/V-conta.ning precipita.es a. the irreversible tra.ping sites for hydrogen detected by thermal desorption ***,the la.tice diffusion coefficient of hydrogen DL wa. determined in steels with a.d without Nb a.d V.

关键词： Hydrogen permea.ion Corrosion Hot sta.ping steel Niobium Va.a.ium Thermal desorption spectroscopy

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强化混凝耦合改性沸石过滤处理微污染水

水处理技术 2024年第4期50卷 111-116,123页

作者：李砂黄智研卢钒孔艳丽马江雅聂勇安徽工业大学建筑工程学院安徽马鞍山243032 安徽工业大学生物膜法水质净化及利用技术教育部工程研究中心安徽马鞍山243032

针对南方某市微污染水源水(XJ)低温低浊及氨氮问题,采用烧杯实验及中试动态运行实验进行复合助凝剂强化混凝耦合改性沸石过滤处理低温低浊及氨氮效能研究。结果表明,配置的Fe/si复合助凝剂在絮凝初期投加时明显提高了低温低浊水的出水... 详细信息

针对南方某市微污染水源水(XJ)低温低浊及氨氮问题,采用烧杯实验及中试动态运行实验进行复合助凝剂强化混凝耦合改性沸石过滤处理低温低浊及氨氮效能研究。结果表明,配置的Fe/si复合助凝剂在絮凝初期投加时明显提高了低温低浊水的出水水质。复合助凝剂的存在起到良好的吸附架桥作用,提高混凝效果。强化混凝对氨氮去除作用有限,不足10%。改性沸石颗粒(MZK)能够利用离子交换和化学吸附作用显著提高氨氮去除效果,去除率达到83.1%。在连续中试动态运行中,出水浊度基本控制在0.6 NTU;在240 h的运行周期内,MZK对氨氮的去除效果明显优于石英砂,氨氮的平均去除率为77.6%,出水处氨氮浓度均小于0.5 mg/L。强化混凝耦合改性沸石过滤为低温低浊及氨氮的水处理提供了理论基础和技术参考,具有较好的应用前景和推广价值。

关键词：低温低浊氨氮助凝剂强化混凝改性沸石过滤耦合处理

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生态茶园植物残体在不同空间的分解动态

南方农业学报 2024年第1期55卷 151-159页

作者：宋凯杨瑞郭家瑞马觉兵刘莎茜高旭赵洋洋贵州大学林学院贵州贵阳550025

【目的】探索不同植物在不同空间的自然分解变化过程,为茶园的物质养分循环及维持土壤肥力提供理论依据。【方法】采用分解袋法分析茶(Ca.ellia.sinensis)修剪物、光皮桦(Betula.luminifera.、猴樟(Cinna.omum bodinieri)、杉木(Cunning... 详细信息

【目的】探索不同植物在不同空间的自然分解变化过程,为茶园的物质养分循环及维持土壤肥力提供理论依据。【方法】采用分解袋法分析茶(Ca.ellia.sinensis)修剪物、光皮桦(Betula.luminifera.、猴樟(Cinna.omum bodinieri)、杉木(Cunningha.ia.a.ceola.a.和马尾松(Pinusmassonia.a.的植物残体在土壤、林冠和地表的分解特征、时间动态及不同阶段分解速率差异。【结果】植物残体自然分解过程中总体呈快—慢的变化趋势,不同空间的残体质量损失率为土壤>地表>林冠,具体为茶修剪物、光皮桦和猴樟的残体质量损失率随高度升高逐渐减少,杉木和马尾松的残体质量损失率随高度升高先增加后减少。多因素方差分析表明,空间、时间、树种及三者间交互作用极显著影响植物残体干重剩余率(P光皮桦>猴樟>马尾松>杉木,而地表的年分解速率种间排序依次为茶修剪物>光皮桦>猴樟>杉木>马尾松,且茶修剪物、光皮桦和猴樟的年分解速率与空间具有显著线性正相关关系(P0.05)。【结论】地表和土壤相较林冠能提高植物残体利用效率,适当清除林冠累积的植物残体,并将其置于土壤和地表环境更利于其降解。

关键词：茶园植物残体林冠地表土壤分解

Highwa. constructions on the Qingha.-Tibet Pla.ea.:Cha.lenge,resea.ch a.d pra.tice

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Journa. of Roa. Engineering 2022年第1期2卷 1-60页

作者： a.min sha Bia. ma Ha.nia. Wa.g Liqun Hu Xuesong mao Xila. Zhi Hua.in Chen Yu Liu Feng ma Zhua.gzhua.g Liu Rui He Wei si Xuha. Wa.g Cheng Li Key La.ora.ory of Specia. a.ea.Highwa. Engineering of Ministry of Educa.ion Chang'an UniversityXi'an 710064China School of Highwa. Chang'an UniversityXi'an 710064China Cha.g'a.-Dublin interna.iona. College of Tra.sporta.ion Chang'an UniversityXi'an 710064China School of materia.s Science a.d Engineering Chang'an UniversityXi'an 710064China

Highwa. constructions on the Qingha.-Tibet Pla.ea.(QTP)fa.e grea. cha.lenges induced by the unique loca. environmenta.,geologica.,a.d engineering *** la.ge a.ea.of permafrost,grea. tempera.ure va.ia.ility,strong UV ra.s,a.d complex geologica. conditions a.e the major fa.tors tha. a.versely influence the longterm performance of pa.ement *** 1960s,Chinese engineers a.d resea.chers ha.e sta.ted conducting resea.ch on the QTP to enha.ce the performance a.d dura.ility of pa.ement *** present pa.er provide a.comprehensive review of cha.lenge,resea.ch a.d pra.tice of highwa. constructions on the QTP including the specia. environmenta. a.d geologica. conditions,history of highwa. constructions on the QTP,major cha.lenges a.d the sta.e-of-the-a.t technology of subgra.e constructions on permafrost,developments of the pa.ement structures a.d materia.s,performance prediction a.d maintena.ce methods of pa.ement surfa.es,a.d a.plica.ions of the resea.ch a.hievements on the first expresswa. on the QTP(i.e.,Gongyu Expresswa.).Ba.ed on the comprehensive litera.ure review,it ca. be found tha.(1)frost hea.e a.d tha. wea.ening induced subgra.e disea.e a.d longitudina. cra.ks on the pa.ement surfa.e a.e complex coupled wa.er-thermal-loa. *** solutions a.e focusing on a.tive cooling a.d thermal insula.ion methods,which ca. help to reduce tempera.ure va.ia.ions in the subgra.e a.d thus improving its sta.ility,(2)the ha.sh environmenta. a.d construction conditions may reduce the ea.ly strength a.d induce premature da.1}ge of cement-trea.ed ba.e *** field va.ida.ions showed tha. geocell-reinforced or a.pha.t-trea.ed flexible ba.e materia.s ca. provide better long-term performance,(3)the la.ge tempera.ure va.ia.ility a.d strong UV ra.s ca. significa.tly a.celera.e a.ing of a.pha.t binders a.d grea.ly reduce the service life of a.pha.t *** binder modifica.ion methods were developed for improving their viscoela.ticity a.d enh

关键词： Qingha.-Tibet Pla.ea. Permafrost subgra.e a.pha.t pa.ement Gongyu Expresswa.

Tempera.ure effect on tra.sloca.ion speed a.d ca.ture ra.e of na.opore-ba.ed DNa.detection

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Science China.Technologica. Sciences) 2015年第3期58卷 519-525页

作者： ZHa.GYin WU GenSheng ma Jia. YUa. Zhishan si Wei LiU Lei sha JingJie CHEN YunFei Jia.gsu Key La.ora.ory for Design a.d manufa.ture of Micro-Na.o Biomedica. instruments School of Mechanical Engineering Southeast University

We study the effects of electrolyte tempera.ure on DNa.molecule tra.sloca.ion experimenta.ly without a.d with a.tempera.ure gra.ient a.ross na.opore *** sa.e tempera.ures on both electrolyte cha.bers a.e first *** DNa.molecule tra.sloca.ion time is mea.ured to be 2.44 ms a. 2°C in both cha.bers,which is 1.57 times longer tha. a. 20°*** the tempera.ure difference effect is cha.a.terized in both *** results show tha. the DNa.tra.sloca.ion speed ca. be slowed down a. long a. one side tempera.ure is lowered,irrespective of the tempera.ure gra.ient *** indica.es tha. the thermophoretic driving force genera.ed by a.tempera.ure gra.ient ha. no obvious effect on the threa.ing speed of DNa.molecules,while the main rea.on for the slowed DNa.tra.sloca.ion speed is the increa.ed ***,the ca.ture ra.e of DNa.molecules is enha.ced under a.tempera.ure gra.ient condition,a.d the ca.ture ra.e during DNa.tra.sloca.ion from hot side a. 21°C to cold one a. 2°C is 1.7 times la.ger tha. tha. under the condition of both cha.bers a. 20°***,a. optimized configura.ion is proposed to a.quire higher ca.ture ra.es a.d lower DNa.tra.sloca.ion speeds.

关键词： DNa.测温度效应转速度捕获率纳米孔 DNa.子基础温度梯度

科教融合综合性创新实验设计:功能型枝化多肽光疗体系的制备与性能研究

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化学教育（中英文） 2024年第12期45卷 82-89页

作者：陈思周雨田马晓雨王文嵩刘凡鄢国平樊锦轩武汉工程大学材料科学与工程学院湖北武汉430205 衢州学院化学与材料工程学院浙江衢州324000 华中科技大学生命科学与技术学院湖北武汉430074

根据课程特点,设计了综合性创新实验“功能型枝化多肽光疗体系的制备与性能研究”,该实验以解决光敏剂ir780水溶性差、体内稳定性不佳及细胞摄取效率偏低等缺陷为目的,利用亲疏水作用将光敏剂ir780包载在两亲性功能枝化多肽疏水空腔内... 详细信息

根据课程特点,设计了综合性创新实验“功能型枝化多肽光疗体系的制备与性能研究”,该实验以解决光敏剂ir780水溶性差、体内稳定性不佳及细胞摄取效率偏低等缺陷为目的,利用亲疏水作用将光敏剂ir780包载在两亲性功能枝化多肽疏水空腔内构建光疗体系Ri。通过一系列检测手段对光疗体系Ri的性能进行了表征,并在实验具体实施过程中强化了学生的实验技能,培养了学生的科研素养。

关键词：功能型多肽光热转换效率科教融合综合性创新实验

血清LPa.a.gii及β2-MG在老年2型糖尿病患者病情监控中的作用及其与胰岛素抵抗的相关性分析

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现代生物医学进展 2024年第2期24卷 386-390页

作者：司璐薛丽娜马胜南成欣韩苗苗赤峰学院附属医院内分泌科内蒙古赤峰024000 赤峰学院附属医院老年病科内蒙古赤峰024000

目的:分析血清溶血磷脂酸(LPa.、血管紧张素Ⅱ(a.gⅡ)及β2-微球蛋白(β2-MG)在老年2型糖尿病患者病情监控中的作用及其与胰岛素抵抗的相关性。方法:选择我院自2020年1月至2023年6月收治的106例老年2型糖尿病患者作为观察组,其中34例患... 详细信息

目的:分析血清溶血磷脂酸(LPa.、血管紧张素Ⅱ(a.gⅡ)及β2-微球蛋白(β2-MG)在老年2型糖尿病患者病情监控中的作用及其与胰岛素抵抗的相关性。方法:选择我院自2020年1月至2023年6月收治的106例老年2型糖尿病患者作为观察组,其中34例患者并发肾病(糖尿病肾病组),72例患者不并发肾病(单纯糖尿病组);另选106例健康体检者作为对照组。检测所有入选者血清LPa.a.gⅡ及β2-MG表达水平,使用多因素Logistic回归分析血清LPa.a.gⅡ及β2-MG与老年2型糖尿病患者并发肾病的关系,Pea.son相关性分析血清LPa.a.gⅡ及β2-MG表达水平与空腹血糖(FPG)、餐后2 h血糖(2hPG)、空腹胰岛素(FiNS)、糖化血红蛋白(Hba.c)、胰岛素抵抗指数(HOMa.iR)、胰岛β细胞功能指数(HOma-β)的关系。结果:观察组血清LPa.a.gⅡ、β2-MG表达水平均高于对照组(Pa.a.gⅡ、β2-MG表达水平均明显高于单纯糖尿病组(Pistic回归分析,血清LPa.a.gⅡ及β2-MG均是老年2型糖尿病患者并发肾病的独立预测因素(PiNS、Hba.c表达水平均高于对照组,HOMa.iR大于对照组,HOma-β小于对照组(Pa.son相关性分析,老年2型糖尿病患者血清LPa.a.gⅡ及β2-MG均与FPG、2hPG、FiNS、Hba.c、HOMa.iR呈正相关(Pma-β呈负相关(Pa.a.gⅡ及β2-MG表达水平升高对老年2型糖尿病患者的病情监控具有一定作用,且均与胰岛素抵抗程度密切相关,值得进一步研究应用。

关键词：老年 2型糖尿病溶血磷脂酸血管紧张素Ⅱ β2-微球蛋白病情监控胰岛素抵抗

a.Novel Functiona. Missense Muta.ion p.T219a.in Type Ga.cher＇s Disea.e

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Chinese Medica. Journa. 2016年第9期129卷 1072-1077页

作者： Lin-Yu Liu Fei Liu si-Chen Du sha-Yi Jia.g Hui-Jun Wa.g Jin Zha.g Wei Wa.g Dua. ma Depa.tment of Biochemistry a.d Molecula. Biology Key Laboratory of Metabolism and Molecular Medicine Ministry of Education School of Basic Medical Sciences Institute of Medical Sciences Fudan University Shanghai 200032 China shangha. institute of Medica. Genetics Children's Hospital of Shanghai Shanghai Jiaotong University Shanghai 200032 China institute oi Pedia.rics Children's I~ospital Of Fudan 'University Shanghai 2000321China

Ba.kground： Ga.cher＇s disea.e （GD） is a. a.tosomal recessive disorder ca.sed by a.deficiency of a.id β-glucosida.e （glucocerebrosida.e [GBa.） tha. results in the a.cumula.ion of glucocerebroside within macropha.es. many muta.ions ha.e been reported to be a.socia.ed with this disorder. This study a.med to discover more muta.ions a.d provide da.a.for the genetic pa.tern of the gene, which will help the development of quick a.d a.cura.e genetic dia.nostic tools for this disea.e. Methods： Genomic DNa.wa. obta.ned from periphera. blood leukocytes of the pa.ient a.d Sa.ger sequencing is used to sequence GBa.gene. Sequence a.ignments of mamma.ia. β-GBa.（GCa.e） a.d three-dimensiona. protein structure prediction of the muta.ion were made. a.construct of this muta.t a.d its compound heterozygous counterpa.t were used to mea.ure GCa.e in vitro. Results： GCa.e is rela.ively conserved a. p.T219a. This novel muta.ion differs from its wild-type in structure. Moreover, it a.so ca.ses a.reduction in GCa.e enzyme a.tivity. Conclusion： This novel muta.ion （c.655a.G, p.T219a. is a.pa.hogenic missense muta.ion, which contributes to GD.

关键词： Ga.cher's Disea.e GCa.e Genetics Novel Missense Muta.ion

Effects of WOx modifica.ion on the a.tivity, a.sorption a.d redox properties of CeO_2 ca.a.yst for NO_x reduction with a.monia

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Journa. of Environmenta. Sciences 2012年第7期24卷 1305-1316页

作者： Zira. ma Dua. Weng Xia.dong Wu Zhichun si Sta.e Key La.ora.ory of New Cera.ics&Fine Process Department of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Ya.gtze Delta.Region institute of Tsinghua.University Zhejiang 314000China a.va.ced materia.s institute Graduate School at ShenzhenTsinghua UniversityShenzhen 518055China

a.series of WO3/CeO2 （WOx/CeO2） ca.a.ysts were synthesized by wet impregna.ion of a.monium meta.ungsta.e on a.CeO2 support. The resulting solid a.id ca.a.ysts were cha.a.terized by X-ra. diffra.tion （XRD）, UV-Vis spectroscopy （UV-Vis）, Ra.2}n spectroscopy （Ra.2}n）, in-situ Fourier tra.sform infra.ed spectroscopy （in-situ FT-ir） of a.monia.a.sorption, NH3-TPD, H2 tempera.ure- progra.med reduction （H2-TPR）, NH3/NO oxida.ion a.d a.tivity mea.urements for NOx reduction by NH3 （NH3-SCR）. The results show tha. polytungsta.e （WOx） species a.e the main species of tungsten oxide on the surfa.e of ceria. The a.dition of tungsten oxide enha.ces the BriSnsted a.idity of ceria.ca.a.ysts remarka.ly a.d decrea.es the a.ount of surfa.e oxygen on celia. with strong intera.tion between CeO2 a.d WOx. a. a.result, the N2 selectivity of NH3 oxida.ion a.d NH3-SCR a. high tempera.ures （〉 300℃） is enha.ced. Therefore, a.wide working tempera.ure window in which NOx conversion exceeds 80% （NOx conversion 〉 80%） from 200 to 450℃, is a.hieved over 10 wt.% WOx/CeO2 ca.a.yst. a.tenta.ive model of the NH3-SCR rea.tion route on WOx/CeO2 ca.a.ysts is presented.

关键词： NOx reduction WOx/CeO2 ca.a.yst redox NH3 a.sorption