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Effects of IBA on the rooting of branch cuttings of Chinese jujube (Zizyphus jujuba Mill.) and changes to nutrients and endogenous hormones

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Journal of Forestry Research 2018年第6期29卷 1557-1567页

作者： Fengxia Shao Sen Wang Wen Huang zhiming liu Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees Key Laboratory of Non-wood Forest Products of State Forestry AdministrationCentral South University of Forestry and Technology Department of Biology Eastern New Mexico University

‘Zhongqiusucui’ jujube secondary shoots were treated with 3-indolebutyric acid(IBA) at three concentrations, 500, 1000 and 1500 mg/L. Results show that IBA could significantly enhance rooting and root characteristics of cuttings and were best with IBA at 1500 mg/L. In the rooting process, the formation of adventitious roots was related to the consumption and accumulation of nutrients(soluble sugars and proteins) and the changes in endogenous hormones in phloem, leaf tips and leaf bases. The rooting of cuttings had a positive correlation with the consumption of soluble sugars during the period of callus formation and with the accumulation of soluble sugars during adventitious root formation and growth. Rooting was positively related to the breakdown of soluble proteins in the phloem when the callus formed, and had a positive correlation with its accumulation during adventitious root formation and growth. Leaf tips and leaf bases showed a reverse trend in changes of soluble protein. However, together with the phloem, leaf tips and leaf bases regulated and controlled the formation and development of adventitious roots. The main activities of soluble proteins exist in the leaf tips as this was the main source of soluble proteins. The relation between rooting and IAA(indole-3-acetic acid) content in phloem was positive and thus a high concentration of IAA could benefit the induction and formation of adventitious roots. However, rooting was negatively related with ABA(abscisic acid) and GA(gibberellic acid) and a high concentration of both could inhibit the induction and formation of adventitious roots. Rooting had a positive correlation with phloem IAA/ABA ratios, and higher ratios could improve rooting. Low concentrations of ZR(zeatin riboside) triggered the induction of adventitious roots, while higher concentrations promoted root *** hormones in leaf tips and bases had an impact on rooting. The activities of endogenous hormones mainly existed in leaf tip

关键词： Chinese jujube Ziziphus jujuba Mill. Rooting of cuttings Soluble sugars Soluble proteins Endogenous hormones

Selective catalytic reduction of NO_x by hydrogen over modified Pd/TiO_2-Al_2O_3 catalyst under lean-burn conditions

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Chinese Science Bulletin 2014年第31期59卷 3973-3979页

作者： Kaijiao Duan zhiming liu Lei Yuan State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology

A series of Ni,Sn and Ca modified Pd/TiO2-Al2O3catalysts were prepared by the incipient wetness impregnation method and their catalytic performance for the selective catalytic reduction of NOxby H2was *** results showed that the NOxconversion and N2selectivity were improved over Pd-Sn/TiO2-Al2O3and Pd-Ni/TiO2-Al2O3catalysts above 200°*** importantly,the N2selectivity and high-temperature activity of Pd-Sn/TiO2-Al2O3catalyst was far superior to the single Pd/*** optimal Sn loading was 2 wt.%.X-ray diffraction(XRD)results showed that the interaction between Pd and Sn promotes the dispersion of Pd over ***-programmed reduction(H2-TPR)results demonstrated that the addition of Sn contributes to the formation of Pd0and improving the redox property of Pd/*** additives of Ni and Sn also facilitated the absorption of NOxand the oxidation of NO to NO2,which play important roles in the selective catalytic reduction of NOxby hydrogen.

关键词：选择性催化还原氧化铝催化剂 TiO2 NOx PdO 燃烧条件改性 Al2O3

血清和玻璃体中miR-126和miR-325与增生性玻璃体视网膜病变严重程度的关系

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国际眼科杂志 2024年第3期24卷 351-355页

作者：唐辛刘志明徐宁达李佳睿黄旅珍北京大学人民医院、眼病与视光医学研究所、视网膜脉络膜诊治研究北京市重点实验室、北京大学医学部眼视光学院中国北京市100044

目的:探讨血清和玻璃体中miR-126和miR-325与增生性玻璃体视网膜病变(PVR)严重程度的关系。方法:回顾性研究。选取2019-10/2022-10在本院治疗的PVR患者100例100眼。按照视网膜病变程度分为轻度组42眼和重度组58眼。选取同期因眼外伤在... 详细信息

目的:探讨血清和玻璃体中miR-126和miR-325与增生性玻璃体视网膜病变(PVR)严重程度的关系。方法:回顾性研究。选取2019-10/2022-10在本院治疗的PVR患者100例100眼。按照视网膜病变程度分为轻度组42眼和重度组58眼。选取同期因眼外伤在本院进行玻璃体切除术无视网膜病变的患者30例30眼为对照组。采用荧光定量PCR检测血清和玻璃体中miR-126和miR-325表达水平;ELISA检测血清、玻璃体中转化生长因子-β(TGF-β)、血小板衍生生长因子(PDGF)、血管内皮生长因子(VEGF)、肿瘤坏死因子-α(TNF-α)水平;Pearson法分析血清和玻璃体中miR-126和miR-325水平与TGF-β、PDGF、VEGF、TNF-α水平的相关性;采用Logistic多因素分析影响发生重度PVR的因素。结果:PVR患者血清和玻璃体中miR-126水平较对照组降低,且重度组低于轻度组(均P<0.05);miR-325水平较对照组升高,且重度组高于轻度组(均P<0.05)。重度组患者血清和玻璃体中TGF-β、PDGF、VEGF、TNF-α水平较轻度组均上升(均P<0.05)。PVR患者血清和玻璃体中miR-126水平与miR-325、TGF-β、VEGF、TNF-α、PDGF水平均呈负相关(均P<0.05),miR-325与TGF-β、VEGF、TNF-α、PDGF水平均呈正相关(均P<0.05)。Logistic回归分析显示,血清和玻璃体中miR-325、TGF-β、PDGF、TNF-α均是发生重度PVR的危险因素,miR-126是保护因素(P<0.05)。结论:随PVR疾病的加重,患者血清和玻璃体中miR-126表达降低,miR-325表达升高,且与TGF-β、TNF-α、VEGF、PDGF具有相关性。

关键词：血清玻璃体 miR-126 miR-325 增生性玻璃体视网膜病变

Promoting effect of Zr on the catalytic combustion of methane over Pd/γ-Al2O3 catalyst

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Frontiers of Environmental Science & Engineering 2014年第5期8卷 659-665页

作者： Hongbo NA Tianle ZHU zhiming liu Yifei SUN School of Chemistry and Environment Key Laboratory of Bio-Inspired Smart Interracial Science and Technology of Ministry of Education Beihang University Beijing 100191 China State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Beijing 100029 China

The effect of Zr on the catalytic performance of Pd/y-A1203 for the methane combustion was investigated. The results show that the addition of Zr can improve the activity and stability of Pd/γ-Al2O3 catalyst, which, based on the catalyst characterization （N2 adsorption, XRD, CO- Chemisorption, XPS, CHa-TPR and O2-TPO）, is ascribed to the interaction between Pd and Zr. The active phase of methane combustion over supported palladium catalyst is the Pd^0/Pd^2＋ mixture. Zr addition inhibits Pd aggregation and enhances the redox properties of active phase Pd^0/ Pd^2＋. H2 reduction could effectively reduce the oxidation degree of Pd species and regenerate the active sites （Pd^0/ pd^2＋）.

关键词： Pd-Zr/Al2O3 methane catalytic combustion,catalyst regeneration

A dynamic logic for verification of synchronous models based on theorem proving

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Frontiers of Computer Science 2022年第4期16卷 235-237页

作者： Yuanrui Zhang Frédéric Mallet zhiming liu School of Mathematics and Statistics Southwest UniversityChongqing400715China University Cote d’Azur CNRSInriaI3SNice06103France Center for Intelligent and Embedded Software Northwest Polytechnical UniversityXi’an710129China

1Introduction Synchronous models,a modelling paradigm proposed along with the development of synchronous programming languages[1]in,the 198os,are well-adapted for modelling and specifying reactive *** of systems that consecutively interact with their environment at a particular environment-determined *** a synchronous model,system behaviours are interpreted as a sequence of reactions.

关键词： theorem adapted programming

Automated transformations from UML behavior models to contracts

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Science China(Information Sciences) 2014年第12期57卷 216-232页

作者： LI Dan LI XiaoShan liu zhiming Volker STOLZ Faculty of Science and Technology University of Macau Guizhou Academy of Sciences School of Computing Telecommunications and Networks Birmingham City University Department of Informatics University of Oslo

In model driven architecture(MDA),system requirements are first captured by UML(unified modeling language)use cases with sequence diagrams to describe their intended use and implemented by classes of objected-oriented languages in the subsequent design *** is important that the dynamic behavior specified by the sequence diagrams is in full compliance with the implementation *** paper proposes an automatic approach and tool support for generating class contracts,which define a precondition and a postcondition for each operation of the *** former serves as a guard to ensure invocations of the operations respect the semantics introduced by the sequence diagrams,and the latter places the system in a legal state to facilitate the succeeding operation *** contracts can be easily mapped to code of an object-oriented language such as ***,the approach helps to bridge the gap between the requirements and design stages of system development *** use our model transformation tool to first generate a UML protocol state machine from the sequence diagrams,and then derive the contracts for a controller *** transformations take into account the concurrency and critical constructs of the respective UML diagrams.

关键词： model-driven development UML sequence diagrams state machines model transformations QVT

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SiO制备过程添加剂影响及生产改善策略

矿冶 2024年第2期33卷 271-279,309页

作者：刘志明袁坤陈思明青海盐湖元品化工有限责任公司青海格尔木816099 中国科学院过程工程研究所北京100190 青海盐湖镁业有限公司青海格尔木816099 战略金属资源绿色循环利用国家工程研究中心北京100190

SiO材料是目前锂离子电池硅基负极材料中商业化应用最成熟的材料,SiO材料的工业生产主要采用SiO_(2)与Si的蒸发法工艺,由于反应过程中反应物均为固相(或微熔融相),反应效率偏低,这一问题一直困扰着生产企业。从热力学角度出发,分析不同... 详细信息

SiO材料是目前锂离子电池硅基负极材料中商业化应用最成熟的材料,SiO材料的工业生产主要采用SiO_(2)与Si的蒸发法工艺,由于反应过程中反应物均为固相(或微熔融相),反应效率偏低,这一问题一直困扰着生产企业。从热力学角度出发,分析不同添加剂对SiO_(2)+Si反应过程热力学平衡产物的分布的影响。结果表明,金属Zn对SiO_(2)+Si反应具有较好的促进作用,并针对SiO_(2)与Si固相反应过程物料扩散阻力大导致反应效率偏低的技术难题,提出了通过球团技术强化SiO_(2)+Si反应过程生产改善策略,结果可为SiO实际生产过程提供一定理论参考。

关键词：锂离子电池硅基负极材料 SiO 添加剂球团技术强化

A GIS-based Tupu Analysis of Dynamics of Saline-alkali Land in Western Jilin Province

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Chinese Geographical Science 2007年第4期17卷 333-340页

作者： REN Chunying ZHANG Bai WANG Zongming SONG Kaishan liu Dianwei liu zhiming Northeast Institute of Geography and Agroecology Chinese Academy of Sciences Changchun 130012 China College of Urban and Environmental Sciences Northeast Normal University Changchun 130024 China Graduate University of Chinese Academy of Sciences Beo＇ing 100049 China

Based on Tupu theory, this paper studied the dynamic changes, conversion modes, expansion intensity and landscape attributes of the saline-alkali lands in Changling County, Zhenlai County and Da'an City of the western Jilin Province in 1980-2000 with the help of GIS. The results show that the saline-alkali land rather sharply increased in Da'an during 1995-2000; the main conversion processes in the three counties were from grassland to saline-alkali land and from saline-alkali land to grassland; and the typical shapes, spatial expansion speed and mode, and landscape attributes of the saline-alkali land were different in the three counties, which were closely related to local topography, predominant wind orientation, water resources distribution, etc. The corresponding spatial expansion mode was marginality in Changling, random in Zhenlai and more kernels in Da'an, respectively. Landscape attributes also responded to the spatial-temporal dynamic changes of the saline-alkali land and the landscape indices of Da'an fluctuated greatly. The frame of this research may provide fundamental reference for landscape analysis and give some suggestions for regional sustainable development.

关键词： Tupu saline-alkali land GIS Jilin Province

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基于弱配位环境的晶态锌离子固态电解质

储能科学与技术 2024年第8期13卷 2519-2528页

作者：许超锋韩晓蕾王进芝王晓君刘治明赵井文青岛科技大学机电工程学院山东青岛266061 中国科学院青岛生物能源与过程研究所山东能源研究院青岛新能源山东省实验室山东青岛266101

二次锌电池是一类低成本、环保和高安全的规模储能技术,但是一直以来锌金属负极与传统水系电解液兼容性不足以及严重的枝晶生长问题限制了电池能量密度和寿命。发展固态二次锌电池是根本解决上述瓶颈问题的有效路线之一,但是,二价锌离... 详细信息

二次锌电池是一类低成本、环保和高安全的规模储能技术,但是一直以来锌金属负极与传统水系电解液兼容性不足以及严重的枝晶生长问题限制了电池能量密度和寿命。发展固态二次锌电池是根本解决上述瓶颈问题的有效路线之一,但是,二价锌离子电荷密度高,其在无机陶瓷电解质和聚合物电解质中的室温固相传导极为困难。本工作以具有层状晶体结构的三氟甲基磺酸锌[Zn(TFO)_(2)]作为离子盐主体骨架,通过引入“软碱”的双齿弱配位配体——丁二腈(SN)重塑锌离子的固相配位环境,发展了一类晶态配位化合物的锌离子固态电解质[Zn(TFO)_(2)(SN)_(n)]。得益于氰基官能团(—CN)与三氟甲基磺酸阴离子(TFO^(-))的共配位结构,阴离子骨架对锌离子的静电束缚得到了显著降低,锌离子室温固态离子电导率实现了3个数量级的提升[由Zn(TFO)_(2)的1.1×10^(-9)S/cm提升至1.8×10^(-6)S/cm]。基于该类固态电解质,Zn||Zn对称电池可实现低极化电压(0.08 V,0.05 mA/cm^(2))的长周期锌沉积/溶解循环,并且实现了全固态锌空气电池在室温下的可逆充放电。

关键词：晶态配位化合物弱配位作用锌离子固态电解质锌离子固相传导二次锌电池