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Preferential adsorption behaviour of CH_4 and CO_2 on high-rank coal from Qinshui Basin,China

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International Journal of Mining Science and Technology 2014年第4期24卷 491-497页

作者： yu Hongguan Jing Renxia Wang panpan Chen Lihui Yang Yongjie Key Laboratory of Mine Disaster Prevention and Control Shandong University of Science and Technology School of Chemical and Environmental Engineering Shandong University of Science and Technology

In order to better understand the prevailing mechanism of CO2 storage in coal and estimate CO2 sequestration capacity of a coal seam and enhanced coalbed methane recovery （ECBM） with CO2 injection into coal, we investigated the preferential adsorption of CH4 and CO2 on coals. Adsorption of pure CO2, CH4 and their binary mixtures on high-rank coals from Qinshui Basin in China were employed to study the preferential adsorption behaviour. Multiple regression equations were presented to predict CH4 equi- librium concentration from equilibrium pressure and its initial-composition in feed gas. The results show that preferential adsorption of CO2 on coals over the entire pressure range under competitive sorption conditions was observed, however, preferential adsorption of CH4 over CO2 on low-volatile bituminous coal from higher CH4-compostion in source gas was found at up to 1O MPa pressure. Preferential adsorp- tion of CO2 increases with increase of CH4 concentration in source gas, and decreases with increasing pressure. Although there was no systematic investigation of the effect of coal rank on preferential adsorp- tion, there are obvious differences in preferential adsorption of gas between low-volatile bituminous coal and anthracite. The obtained preferential adsorption gives rise to the assumption that CO2 sequestration in coal beds with subsequent CO2-ECBM might be an ootion in Qinshui Basins, China.

关键词： Coal Preferential adsorption Coalbed methane Gas mixtures CO2 sequestration

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白酒酿造过程中耐稀氧含量菌株的筛选

酿酒 2020年第3期47卷 88-91页

作者：于文娟董乔娟许玲姜明惠于盼盼杨庆振白秀彬赵纪文山东扳倒井股份有限公司山东高青256300

主要运用平板厌氧技术对中高温大曲整个制作过程和窖泥中耐稀氧含量菌株进行了筛选,共筛选出17株耐稀氧含量的细菌,并通过菌落形态、菌株形态的分析比较以及16S rDNA序列分析等,对这17株细菌进行分类鉴定。同时检测其酶活及生长特性为... 详细信息

主要运用平板厌氧技术对中高温大曲整个制作过程和窖泥中耐稀氧含量菌株进行了筛选,共筛选出17株耐稀氧含量的细菌,并通过菌落形态、菌株形态的分析比较以及16S rDNA序列分析等,对这17株细菌进行分类鉴定。同时检测其酶活及生长特性为下一步运用于白酒酿造做准备。

关键词：中高温大曲窖泥耐稀氧耐酸耐高温酶活

尿CXCL9/SCr及CXCL10/SCr对肾移植排斥反应的诊断价值

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中华器官移植杂志 2024年第4期45卷 259-264页

作者：许洋李琳曹玉陈杰詹盼盼赵杰天津市第一中心医院肾移植科天津300192

目的探讨肾移植受者尿CXCL9/SCr与CXCL10/SCr对排斥反应的诊断价值。方法收集2021年3月至2022年7月于天津市第一中心医院肾移植科行移植肾穿刺活检的120例受者临床数据,根据病理结果分为排斥反应组(72例)、BK病毒肾病(BKVN)组(16例)及... 详细信息

目的探讨肾移植受者尿CXCL9/SCr与CXCL10/SCr对排斥反应的诊断价值。方法收集2021年3月至2022年7月于天津市第一中心医院肾移植科行移植肾穿刺活检的120例受者临床数据,根据病理结果分为排斥反应组(72例)、BK病毒肾病(BKVN)组(16例)及移植肾病组(32例),并以肾功能稳定组(20例)为对照,比较各组之间一般情况及尿CXCL9/SCr、CXCL10/SCr差异,进一步根据排斥反应的类型,将排斥反应组72例受者分为T细胞介导的排斥反应组(≥1A TCMR组,28例)、抗体介导的排斥反应组(AMR组,32例)和交界性TCMR组(10例),对排斥反应组进行亚组分析,明确不同排斥类型间差异,采用受试者操作特征曲线(receiver operator characteristic curve,ROC curve)评价尿CXCL9/SCr与CXCL10/SCr特异度及敏感度,并对其进行相关性分析。结果四组受者一般资料差异无统计学意义,排斥反应组与BKVN组比较,尿CXCL9/SCr与CXCL10/SCr的差异无统计学意义(均P>0.05),排斥反应组和BKVN组此两组值均大于移植肾病组及肾功能稳定组(均P0.05);对排斥反应亚组分析中,≥1A TCMR组中尿CXCL9/SCr与CXCL10/SCr值均分别大于交界性TCMR组及AMR组(均P0.05);尿CXCL9/SCr对监测排斥反应的曲线下面积(area under the curve,AUC)为0.938,阈值为0.482µg/mol,尿CXCL10/SCr AUC为0.89,阈值为5.516µg/mol,且尿CXCL9/SCr与CXCL10/SCr存在高度线性相关性。结论尿CXCL9/SCr及CXCL10/SCr可作为移植肾排斥反应敏感和特异性的早期、无创标志物,有望成为新的移植肾排斥反应的诊断工具,但仍需与BKVN进行区别。

关键词：肾移植排斥反应生物标志物

GSK3β/Fis1信号通路在甲基乙二醛诱导成骨细胞凋亡中的作用及机制

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医学研究杂志 2024年第6期53卷 104-108页

作者：戴盼盼於辉张鹏林海升陈申国浙江省台州医院、台州恩泽医疗中心(集团)恩泽医院 317000

目的探讨糖原合成酶激酶3β(glycogen synthase kinase 3β,GSK3β)/线粒体分裂蛋白1(fission protein 1,Fis1)信号通路在甲基乙二醛(methylglyoxal,MG)诱导成骨细胞凋亡中的作用及机制。方法采用LiCl作为GSK3β抑制剂,将细胞随机分为4... 详细信息

目的探讨糖原合成酶激酶3β(glycogen synthase kinase 3β,GSK3β)/线粒体分裂蛋白1(fission protein 1,Fis1)信号通路在甲基乙二醛(methylglyoxal,MG)诱导成骨细胞凋亡中的作用及机制。方法采用LiCl作为GSK3β抑制剂,将细胞随机分为4组,即对照组、MG组、LiCl组和LiCl+MG组。采用MTT法检测细胞增殖活性,Tunel染色法分析细胞凋亡情况,Western blot法检测GSK3β、Fis1蛋白表达水平,MitoTracker Deep Red染色法分析线粒体形态。结果MTT法检测结果表明,MG抑制了成骨细胞增殖活性。Tunel染色法检测结果显示,MG诱导成骨细胞凋亡。Western blot法检测结果表明,MG处理后GSK3β蛋白磷酸化水平降低,Fis1蛋白表达水平增加。MitoTracker Deep Red染色法分析结果显示,MG处理后线粒体呈碎片化。在加入GSK3β抑制剂LiCl干预后,与MG组比较,其显著恢复了MG抑制的细胞增殖活性、减少细胞凋亡,同时GSK3β蛋白磷酸化水平升高,Fis1蛋白表达水平降低,并且恢复了线粒体形态。结论MG可能通过调控GSK3β/Fis1信号通路促进线粒体分裂增加,诱导成骨细胞凋亡。

关键词：糖尿病牙周炎甲基乙二醛糖原合成酶激酶3β 线粒体分裂蛋白1 细胞凋亡

Rational construction and decoration of Li_(5)Cr_(7)Ti_(6)O_(25)@Cnanofibers as stable lithium storage materials

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Journal of Energy Chemistry 2022年第8期31卷 400-410,I0011页

作者： Ting-Ting Wei panpan Peng yu-Rui Ji Yan-Rong Zhu Ting-Feng Yi Ying Xie School of Materials Science and Engineering Northeastern UniversityShenyang 110819LiaoningChina Key Laboratory of Functional Inorganic Material Chemistry Ministry of EducationSchool of Chemistry and Materials ScienceHeilongjiang UniversityHarbin 150080HeilongjiangChina School of Resources and Materials Northeastern University at QinhuangdaoQinhuangdao 066004HebeiChina Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province Qinhuangdao 066004HebeiChina

Li_(5)Cr_(7)Ti_(6)O_(25) is regarded as a promising anode material for Li-ion batteries(LIBs)because of its low cost and high theoretical ***,the inherently poor conductivity significantly limits the enhancement of its rate capability and cycling stability,especially at high current *** this work,we construct one-dimensional Li_(5)Cr_(7)Ti_(6)O_(25)/C nanofibers by electrospinning method to enhance the kinetic,which realizes high cycling *** coating enhances the structure stability,insertion/extraction reversibility of Li-ions and electrochemical reaction activity,and facilitates the transfer of *** from the unique architecture and component,the Li_(5)Cr_(7)Ti_(6)O_(25)/C(6.6 wt%)nanofiber shows an excellent rate capability with a reversible de-lithiation capacity of 370.8,290.6,269.2,254.3 and 244.9 m Ah g^(-1) at 200,300,500,800 and 1000 m A g^(-1),*** at a higher current density of 1 A g^(-1),Li_(5)Cr_(7)Ti_(6)O_(25)/C(6.6 wt%)nanofiber shows high cycling stability with an initial de-lithiation capacity of 237.8 m Ah g^(-1) and a capacity retention rate of about 84%after 500 *** density functional theory calculation result confirms that the introduction of carbon on the surface of Li_(5)Cr_(7)Ti_(6)O_(25) changes the total density of states of Li_(5)Cr_(7)Ti_(6)O_(25),and thus improves electronic conductivity of the composite,resulting in a good electrochemical performance of Li_(5)Cr_(7)Ti_(6)O_(25)/C ***_(5)Cr_(7)Ti_(6)O_(25)/C nanofibers indicate a great potential as an anode material for the next generation of high-performance LIBs.

关键词： Lithium-ion battery Anode Li_(5)Cr_(7)Ti_(6)O_(25) Electrospinning Nanofibers

Multi-objective and multi-scheme research on water and sediment regulation potential of reservoirs in the upper Yellow River

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International Journal of Sediment Research 2023年第2期38卷 203-215页

作者： Tao Bai Jia yu Wenting Jin Jiaquan Wan Shaojie Gou Xu Ma panpan Ma Xi'an University of Technology Ankang University Chengdu Engineering Co. Ltd. CCCC First Highway Consultants Co. Ltd.

The problems of the deteriorating relation between water and sediment, and the escalating conflict between water supply and demand in the upper Yellow River(YR), need to be addressed. Reservoirs of Longyangxia, Liujiaxia, and Heishanxia(Long-Liu-Hei) in the upper YR are taken as the research object, and a multi-objective, water-sediment optimal operation model for cascade reservoirs Long-Liu-Hei has been developed. This operation model considers the comprehensive requirements of water supply, power generation, flood control, and especially, water and sediment regulation. The improved Non-dominated Sorting Genetic Algorithms(NSGA-II) method is used to demonstrate the water and sediment regulation potential of three scenario schemes under long-term conditions, and the adjustable water allocation of four schemes under typical year conditions are calculated. It is recommended to use the mode of generating hydropower depending on the available water amount as the best operating mode under the conditions of a long time series and for typical years. This recommended operation mode has verified the rationality and accuracy of the reservoir operations *** the same time, compared with the calculation results for water and sediment regulation after the construction of the Heishanxia, the current research indicates:(1) Under the recommended model, the potential for water and sediment regulation under the long-term series and typical years is once every four years.(2) Inter-basin water transfer greatly improves the cascade power generation. When the adjustable water volume is converted into the controlled volume for water and sediment regulation,the intensity frequency of water and sediment regulation of cascade reservoirs are improved.(3) With the intensification of the contradiction between the supply of and demand for water resources in the upper YR in the future, the amount of transferable water exhibits a decreasing trend, and the regulation of water and sediment in th

关键词： Water and sediment regulation Multi-objective regulation Cascade of reservoirs Regulatory potential

冷凝收集与ICP-MS测定实验室空气中12种金属元素

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实验室研究与探索 2024年第9期43卷 10-14+24页

作者：吴建伟余珊丹毕晨曦马玉通解多芬杨盼盼云南同创检测技术股份有限公司

为了评价实验室空气中金属元素的浓度，开发了一种准确、高效的分析检测方法。将高纯液氩汽化时形成的冷凝冰碴作为样品载体，采用电感耦合等离子体质谱仪（Inductively Coupled Plasma Mass Spectrometry, ICP-MS）测定冷凝冰碴中12种... 详细信息

为了评价实验室空气中金属元素的浓度，开发了一种准确、高效的分析检测方法。将高纯液氩汽化时形成的冷凝冰碴作为样品载体，采用电感耦合等离子体质谱仪（Inductively Coupled Plasma Mass Spectrometry, ICP-MS）测定冷凝冰碴中12种金属元素的浓度，建立了一种冷凝收集ICP-MS测定实验室空气中金属元素的方法。该方法冷凝收集率为70.8%～85.8%,各元素线性相关系数R2均大于0.999 9,检测限为0.001～0.019μg/L,定量限为0.003～0.063μg/L,6次重复测定的相对标准偏差均小于5%,加标回收率为80.5%～99.2%。该方法操作简便、检测效率高，检测限低，数据线性相关性良好，精密度和准确度良好。采用该方法测定某实验室空气冷凝收集样品中12种金属元素的含量，对比测定结果与标准方法职业接触限值，表明实验室空气中各元素浓度远低于职业接触限值对应浓度，该实验室空气中金属元素污染风险低。所建立的检测方法能准确、快速地测定空气中的多种金属元素含量，为实验室空气的安全性评价提供参考依据。

关键词：冷凝收集电感耦合等离子体质谱法实验室空气金属元素

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扳倒井大曲与3株产香细菌的协同发酵试验

酿酒 2017年第1期44卷 63-66页

作者：蔡鹏飞邵传贞于盼盼孙泽青许玲赵纪文山东扳倒井股份有限公司山东高青256300

从扳倒井大曲中,分离筛选得到了3株产香细菌。将这3株产香细菌分别与大曲进行协同发酵试验,结果表明,与单纯大曲发酵比较,协同发酵的发酵液中都增加了酸味和甜味,增加了有益于白酒质量的香味物质成分,减少了影响白酒质量的一部分香味物... 详细信息

从扳倒井大曲中,分离筛选得到了3株产香细菌。将这3株产香细菌分别与大曲进行协同发酵试验,结果表明,与单纯大曲发酵比较,协同发酵的发酵液中都增加了酸味和甜味,增加了有益于白酒质量的香味物质成分,减少了影响白酒质量的一部分香味物质成分。

关键词：北大曲产香细菌协同发酵

扳倒井酒用微生物的分离鉴定及功能性、抗逆性研究

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酿酒科技 2020年第5期 38-42页

作者：董乔娟于文娟许玲姜明慧于盼盼杨庆振白秀彬赵纪文山东扳倒井股份有限公司山东高青256300

利用梯度稀释法和划线纯化法,对扳倒井大曲、酒醅及窖泥中的微生物进行分离纯化,共得到112株菌种,包括61株细菌、32株霉菌和19株酵母菌。经过形态特征观察和分子生物学鉴定后,对其进行冻干管制作,并保藏至扳倒井微生物菌种资源库。分别... 详细信息

利用梯度稀释法和划线纯化法,对扳倒井大曲、酒醅及窖泥中的微生物进行分离纯化,共得到112株菌种,包括61株细菌、32株霉菌和19株酵母菌。经过形态特征观察和分子生物学鉴定后,对其进行冻干管制作,并保藏至扳倒井微生物菌种资源库。分别对112株菌种的淀粉酶、蛋白酶和脂肪酶活力进行测定,筛选出高酶活菌株;同时对112株菌种进行耐高温和耐酸性能筛选,筛选出具有抗逆性能的菌株。

关键词：酒用微生物分离分子鉴定冻干保藏酶活力耐高温耐酸