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Resource Potentials of soda and Boron in the Lower Permian Fengcheng Formation of the Mahu Sag in Northwestern Junggar Basin,China

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Acta Geologica Sinica(English Edition) 2019年第2期93卷 483-484页

作者： YU Kuanhong CAO Yingchang QIU Longwei Key Laboratory of Deep Oil and Gas (China University of Petroleum (East China)) Shandong Provincial Key Laboratory of Depositional Mineralization & Sedimentary Mineral Shandong University of Science and Technology

Objective Sodium carbonate and sedimentary boron concentration are commonly relevant to alkaline evaporitic environments. Sodium carbonate minerals are important industrial raw materials for'soda ash (Na2CO3)', which ... 详细信息

关键词： Resource soda Northwestern Junggar Basin

soda lime玻璃材料中失效波形成和传播研究

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高压物理学报 2012年第3期26卷 241-250页

作者：张延耿段卓平皮爱国张连生欧卓成黄风雷北京理工大学爆炸科学与技术国家重点实验室北京100081

为了研究冲击载荷作用下soda lime玻璃材料中失效波的形成和传播,通过轻气炮加载平板撞击实验,采用双螺旋锰铜压阻传感器,在一发实验中同时测量4种不同厚度试件背面与有机玻璃背板间界面处的纵向应力时程曲线,根据测量结果得到试件中失... 详细信息

为了研究冲击载荷作用下soda lime玻璃材料中失效波的形成和传播,通过轻气炮加载平板撞击实验,采用双螺旋锰铜压阻传感器,在一发实验中同时测量4种不同厚度试件背面与有机玻璃背板间界面处的纵向应力时程曲线,根据测量结果得到试件中失效波的传播轨迹。通过改变碰撞速度,对不同加载条件下的失效波形成和传播规律进行了研究,结果表明,soda lime玻璃材料在冲击作用下产生失效波所需的延迟时间随冲击载荷的增加而减小,失效波传播速度随冲击载荷的增加而增加。最后采用弹性微裂纹统计模型描述冲击载荷作用下soda lime玻璃的破坏机制,并将模型嵌入LS-DYNA有限元程序中,模拟试件在不同加载条件下的平板碰撞,所得横向应力和自由面粒子速度曲线均可用于表征失效波破坏现象。根据数值模拟结果分析失效波的传播轨迹,与实验测量结果符合较好。

关键词：失效波速延迟时间 soda lime玻璃弹性微裂纹统计模型

soda、sodB和KatG在嗜水气单胞菌抗氧化胁迫中的协同作用

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水产学报 2021年第1期45卷 136-146页

作者：陈李维张梅梅张焦南黄力行赵玲敏徐晓津覃映雪鄢庆枇集美大学水产学院

以嗜水气单胞菌野生株B11和基因稳定沉默株soda-RNAi、sodB-RNAi和KatGRNAi为研究对象,比较野生株和沉默株在不同氧化胁迫条件下soda,sodB和KatG表达的相关性及与细菌生长和存活的相关性,以探讨抗氧化胁迫基因在细菌抵御氧化胁迫过程中... 详细信息

以嗜水气单胞菌野生株B11和基因稳定沉默株soda-RNAi、sodB-RNAi和KatGRNAi为研究对象,比较野生株和沉默株在不同氧化胁迫条件下soda,sodB和KatG表达的相关性及与细菌生长和存活的相关性,以探讨抗氧化胁迫基因在细菌抵御氧化胁迫过程中的作用和机制。结果显示,无氧化胁迫条件下soda、sodB和KatG中任何一个基因被沉默后,其余两个基因的表达均受到显著抑制,说明这些抗氧化胁迫基因在表达上密切相关。在外源H2O2胁迫下,soda、sodB和KatG中任何一个基因被沉默后,其他两个抗氧化胁迫基因的表达均表现为显著上调;在甲基紫晶（MV）诱导的内源性活性氧（ROS）胁迫下,各沉默株中soda或sodB的表达水平总体表达为上调,但是在KatG的表达却呈现下调,说明sods的表达在细菌抵御内源性ROS的损伤中更具重要性。在H;O;胁迫下,随着H;O;浓度的增加,野生株B11的存活率仍然保持在较高的水平,而沉默株soda-RNAi、sodB-RNAi和KatG-RNAi的存活率则显著降低;此外,菌株生长曲线显示,soda、sodB和KatG的表达可影响嗜水气单胞菌生长曲线延滞期的长短。在不同浓度MV诱导的ROS胁迫下,野生株B11和沉默株KatG-RNAi的存活率仍然保持在较高的水平,沉默株soda-RNAi和sodB-RNAi的存活率则显著降低,但4株菌仍然能保持一定的生长能力。研究表明,在不同氧化胁迫条件下,细菌可通过不同抗氧化胁迫基因的协同作用,共同抵御ROS的损伤,在H;O;的胁迫下,KatG对嗜水气单胞菌的生存更为重要,而在MV诱导的内源性ROS胁迫下,sod的表达对嗜水气单胞菌生存的贡献更为突出。

关键词：嗜水气单胞菌 soda sodB KatG 氧化胁迫协同作用

Investigation of Optical and Luminescence Properties of soda Lime Borate Glasses Doped with Sm^(3+) Ion

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Journal of the Chinese Ceramic Society 2016年第1期3卷 26-32页

作者： FALAK Zaman GUL Rooh NATTAPON Srisittipokakun JACKRAPONG Kaewkhao Department of Physics Faculity of Science Abdul Wali Khan University Center of Excellence in Glass Technology and Materials Science Nakhon Pathom Rajabhat University Physics Program Faculty of Science and TechnologyNakhon Pathom Rajabhat University

This paper was to investigate the optical and luminescence properties of Sm^(3+) doped SLB glasses by a melt quenching technique. The optical and luminescence properties of the prepared glass samples were investigated via absorption and photoluminescence spectra, respectively. The related physical and optical parameters were also calculated. From optical absorption measurements, the transition ~6H_(5/2) → ~6P_(3/2) at 403 nm has a higher spectral intensity and is a hypersensitive transition. From photoluminescence spectra, four prominent emission spectra appear. The most intense band is located at ~4G_(5/2) →~6H_(9/2)(599 nm), which is the characteristic emission range of Sm^(3+) ions with the reddish orange color. The experimental decay time of the ~4G_(5/2) level of Sm^(3+) SLB glasses was determined. The decay time decreases from 1.367 to 0.333 ms with increasing the content of Sm^(3+). The color coordinates(x, y) of the prepared glasses passes through the reddish-orange region in the CIE 1931 diagram and are suitable for orange LEDs, optoelectronics, and solidstate lighting. The further investigation on the optimization of the dopant content in the SLB glasses was suggested.

关键词： soda lime borate glass absorption luminescence spectra

Sodium Titanates Formation by Roasting of Pellets or Powder Mixture of soda Ash and Rossetta Region Ilmenite Ore Concentrate in Air

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Open Journal of Metal 2014年第2期4卷 20-30页

作者： Inass Ashraf Nafeaa Amina F. Zekry Mohamed Gamal Khalifa Abd El-Fatah B. Farag Naglaa A. El-Hussiny Khaled El Hossiny Mohamed El-Menshawi Hussein Shalabi Central Metallurgical Research and Development Institute Cairo Egypt El-Tabbin Metallurgical Institute Cairo Egypt Faculty of Science Helwan University Greater Cairo Egypt Nuclear Materials Authority (NMA) Cairo Egypt

Alkaline metals and hydrogen titanates are of great interest for possible applications. The qualities of soda ash and Rosetta ilmenite ore concentrate pellets were investigated. The kinetic formation of sodium titanate via roasting of soda ash and ilmenite pellets and powder was studied in the temperature range of 800。C to 900。C.

关键词： soda Ash Ilmenite Pellets Roasting Ilmenite Sodium Titanate

Evaluating the Thermodynamics and Kinetics of Production of Caustic soda from Brine

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Journal of Modern Physics 2018年第2期9卷 99-111页

作者： Awajiogak A. Ujile Amesi Dirinna Joshua Konne Department of Chemical/Petrochemical Engineering Rivers State University of Science & Technology Port Harcourt Nigeria Department of Chemical/Petrochemical Engineering Rivers State University of Science & Technology Port Harcourt Nigeria1 Department of Chemistry Rivers State University of Science & Technology Port Harcourt Nigeria

This work is detailed towards ascertaining the thermodynamics and kinetics considerations for the production of caustic soda from brine and soda ash. The thermodynamics considers the Gibbs free energy;which is the minimum electrical work that must be supplied to an electric cell to drive the electrochemical reactions and its relationship with other thermodynamic parameters. The kinetics aspect of this research deduces the reaction rate equations and also predicts via feasible calculations the rate of the reaction, rate constant and order of the reaction. The examination of the thermodynamic analysis shows that the reaction is exothermic, positive value of entropy indicates that there is intrinsic energy which can be converted into work by a perfect electrolytic reaction process. The work determines the extent and the rate of the production process of caustic soda production and as such a pilot plant production of caustic soda from naturally occurring seawater via the diaphragm cell may be developed. The results obtained have shown that the cell potential using the Nerst equation for the production of optimum product caustic soda are: E = 0.5232 volt and the reaction is of second order. The rate of the reaction r=6.264×10−12 mol⋅cm−2⋅s−1 and the rate constant K2=9.2591×10−5cm⋅s−1.

关键词： Rate Constant Entropy Enthalpy Gibbs Energy soda Ash Constituent Ions

ENZYMATIC BLEACHING OF WHEAT STRAW soda-AQ PULP BY LMS TREATMENT

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天津科技大学学报 2004年第S2期 295-299页

作者： Xiwen Wang, Huaiyu Zhan, Lili XuState Key Lab of Pulp and Paper Engineering, South China University of Technology,Guangzhou, 510640, China

Laccase has been proven that it has a good selectivity and efficiency in pulp bleaching. In this paper, the effects of LMS (Laccase Mediator System) treatment on delignification and bleaching of wheat straw pulp at various conditions, such as laccase dosage, temperature, oxygen pressure and pH, were investigated. The TCF sequence including LMS can bleach the wheat straw pulp to 81%ISO brightness with good strength. The synergetic biobleaching of LMS and xylanase of wheat straw pulp was also investigated. It was found that the final brightness and strength of synergetic biobleaching pulps increased to a certain extent and the bleaching selectivity was improved. The combination of the enzymes is feasible for the delignification and bleaching.

关键词： LMS CEH ENZYMATIC BLEACHING OF WHEAT STRAW soda-AQ PULP BY LMS TREATMENT AQ soda

基于soda方法的HyMOD模型不确定性分析

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长江科学院院报 2017年第9期34卷 6-13,23页

作者：李帅文小浩杜涛中国长江三峡集团公司三峡枢纽建设运行管理局湖北宜昌443133 华中科技大学水电与数字化工程学院武汉430074 长江水利委员会水文局武汉430010

为了改进水文建模过程中的不确定性处理,采用一种融合全局优化和数据同化(Simultaneous Optimization and Data Assimilation,soda)的混合框架,对Hy MOD模型进行了不确定性分析,并与经典SCEM-UA方法进行了比较。soda方法具有如下特点:(1... 详细信息

为了改进水文建模过程中的不确定性处理,采用一种融合全局优化和数据同化(Simultaneous Optimization and Data Assimilation,soda)的混合框架,对Hy MOD模型进行了不确定性分析,并与经典SCEM-UA方法进行了比较。soda方法具有如下特点:(1)具备较高的参数搜索效率和寻优能力;(2)明确考虑包括输入、输出、参数以及模型结构在内的重要不确定性来源。soda方法在渭河流域的实例应用结果表明:与SCEM-UA方法相比,soda方法不仅显著提高了预报精度,而且推求出了性质更为优良的预报区间。soda方法的成功应用,有助于模型概念的改进及对水文系统功能的理解。

关键词： soda HyMOD模型水文模型不确定性 SCEM-UA 集合卡尔曼滤波(EnKF)

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soda启航上海持续挖掘政府数据“金矿”

上海信息化 2019年第9期 42-45页

作者：尹冰不详

数据资源已成为智能时代不可或缺的土壤。上海正通过开放政府数据的创新应用,引导社会数据资源流通合作,在各行业形成数据、人才、资本聚集的生态圈,为人工智能的发展奠定产业基础,从而不断催生新产业、新业态、新模式,打造人工智能高地... 详细信息

数据资源已成为智能时代不可或缺的土壤。上海正通过开放政府数据的创新应用,引导社会数据资源流通合作,在各行业形成数据、人才、资本聚集的生态圈,为人工智能的发展奠定产业基础,从而不断催生新产业、新业态、新模式,打造人工智能高地,推动数字经济高质量发展。

关键词： soda 政府上海金矿挖掘人工智能数据资源数字经济