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pH和硫酸盐浓度对基因工程菌*** FBR5发酵木糖的影响

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酿酒科技 2008年第9期 17-19,22页

作者：刘亭君 shijie liu 胡若飞林鹿华南理工大学制浆造纸工程国家重点实验室

考察了磷酸缓冲液用量和硫酸钠浓度对基因工程菌***5发酵木糖生成乙醇的影响,发现在添加12mL缓冲液的情况下,木糖利用率最高(为96.5%)。10g/L硫酸钠对发酵速度有一定影响,但对最终乙醇浓度影响不大。20g/L硫酸钠对FBR5的生长和乙醇合成... 详细信息

考察了磷酸缓冲液用量和硫酸钠浓度对基因工程菌***5发酵木糖生成乙醇的影响,发现在添加12mL缓冲液的情况下,木糖利用率最高(为96.5%)。10g/L硫酸钠对发酵速度有一定影响,但对最终乙醇浓度影响不大。20g/L硫酸钠对FBR5的生长和乙醇合成都有明显抑制。

关键词：燃料乙醇 E.coli 木糖发酵

咪喹莫特诱导的银屑病样小鼠皮肤抗细菌感染能力的研究

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临床皮肤科杂志 2018年第4期47卷 200-204页

作者：史航刘洁宋智琦大连医科大学附属第一医院皮肤科辽宁大连116044 大连医科大学附属第二医院麻醉科辽宁大连116027

目的:观察咪喹莫特诱导的银屑病样小鼠皮肤抵抗细菌感染的能力。方法:Balb/c小鼠,背部脱毛后涂抹5%咪喹莫特乳膏,制作银屑病样小鼠模型。取银屑病样小鼠及正常小鼠各10只,在其背部皮内分别注射1×10^(11)菌落形成单位(CFU)/L、1×10^(12... 详细信息

目的:观察咪喹莫特诱导的银屑病样小鼠皮肤抵抗细菌感染的能力。方法:Balb/c小鼠,背部脱毛后涂抹5%咪喹莫特乳膏,制作银屑病样小鼠模型。取银屑病样小鼠及正常小鼠各10只,在其背部皮内分别注射1×10^(11)菌落形成单位(CFU)/L、1×10^(12)CFU/L金黄色葡萄球菌液及链球菌菌液各40μL,观察皮肤的红斑、脓肿等炎症反应程度,行组织病理检查及取金黄色葡萄球菌脓肿检测组织荷菌量。结果:1×10^(11) CFU/L金黄色葡萄球菌菌液在正常小鼠皮肤造成直径3~8 mm的脓肿,银屑病样小鼠则无明显改变;1×10^(12) CFU/L金黄色葡萄球菌菌液在正常小鼠皮肤造成直径10~13 mm的巨大脓肿,在银屑病样小鼠皮肤造成直径2~5 mm的结痂;1×10^(11) CFU/L链球菌菌液在正常小鼠皮肤引发红色小丘疹,银屑病样小鼠无反应;1×10^(12) CFU/L链球菌菌液导致正常小鼠皮肤出现小脓点及结痂,4~7 d愈合,银屑病样小鼠皮肤出现红色小丘疹,持续存在,并逐渐隆起。银屑病样小鼠皮肤的金黄色葡萄球菌脓肿的荷菌量显著少于正常小鼠。结论:咪喹莫特诱导的小鼠银屑病样皮损对金黄色葡萄球菌及链球菌急性感染的抵抗力显著增强,对链球菌存在迟发的炎症反应。

关键词：银屑病样皮损咪喹莫特金黄色葡萄球菌溶血性链球菌

Flexible molecules dedicate to release strain of inverted inorganic perovskite solar cell

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Journal of Energy Chemistry 2025年第1期100卷 87-93页

作者： Hongrui Sun Sanlong Wang Pengyang Wang Yali liu Shanshan Qi Biao shi Ying Zhao Xiaodan Zhang Institute of Photoelectronic Thin Film Devices and Technology Renewable Energy Conversion and Storage Center State Key Laboratory of Photovoltaic Materials and CellsNankai University Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin Haihe Laboratory of Sustainable Chemical Transformations Engineering Research Center of Thin Film Photoelectronic Technology of Ministry of Education Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)

The tensile strain in inorganic perovskite films induced by thermal annealing is one of the primary factors contributing to the inefficiency and instability of inorganic perovskite solar cells （IPSCs）,which reduces the defect formation ***,a flexible molecule 5-maleimidovaleric acid （5-MVA） was introduced as a strain buffer to release the residual strain of *** anhydride and carboxyl groups in 5-MVA interact strongly with the uncoordinated Pb2+through Lewis acid-base reaction,thus tightly“pull”the perovskite *** in-between soft carbon chain increased the structural flexibility of CsPbI2.85Br0.15perovskite materials,which effectively relieved the intrinsic internal strain of CsPbI2.85Br0.15,resisted the corrosion of external strain,and also reduced the formation of defects such as VIand *** addition,the introduction of 5-MVA improved crystal quality,passivated residual defects,and narrowed energy level ***,power conversion efficiency （PCE） of NiOxbased inverted IPSCs increased from 19.25% to 20.82% with the open-circuit voltage enhanced from 1.164 V to 1.230 *** release of strain also improved the stability of CsPbI2.85Br0.15perovskite films and devices.

关键词： Inverted inorganic perovskite solar cells Flexible molecules Strain release Crystallization Energy barrier High PCE

Study on End Milling Generation Surface Model and Simulation in View of Main Axle's Tolerance

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厦门大学学报（自然科学版） 2002年第S1期41卷 39-页

作者： LI shi-jie, liu Riu-su, ZHANG Ai-jun (Department of Mechanical Engineering, Hebei University of Technology, Tianjin 300130, China)

In accordance with the relative movement between end-milling cutter and workpiece surface, a theoretical generation model for milled surface was established with the movement error of principal axle considered. Then the milled surfaces under various cutting condition were simulated, the results of which showed that end milled surfaces were of "vaulted profile", heights of surface irregularty at various points to be different with maximum value in the middle and smaller at both sides, the difference were determined by diameter of milling cutter, feeding speed, ratio between the diameter of milling cutter and teeth point curve radius and width of workpiece. The study results can be applied to quality prediction of milled surfaces for precision and/or super precision milling operation.

关键词： end milling milled surface generation model simulation vaulted profile

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婴幼儿食品接触用制品的标签标识技术规范

包装工程 2021年第17期42卷 62-68页

作者：张丽媛李洁君石鎏杰上海市质量监督检验技术研究院上海200233

目的研究婴幼儿食品接触用制品标签技术规范,以期为生产企业设计标签的合规性提供技术指导。方法调研市面上婴幼儿食品接触用制品的标签,分析该类制品标签标识存在的常见问题,针对现有的法律法规和相关标准,归纳婴幼儿食品接触用制品标... 详细信息

目的研究婴幼儿食品接触用制品标签技术规范,以期为生产企业设计标签的合规性提供技术指导。方法调研市面上婴幼儿食品接触用制品的标签,分析该类制品标签标识存在的常见问题,针对现有的法律法规和相关标准,归纳婴幼儿食品接触用制品标签的技术要求。结论归纳总结了现行有效的标准和法规中婴幼儿制品标签的规定,提出了标签标注要素,并对关键要素的标注进行了技术解读,为生产企业设计标签提供了参考,建议生产企业可结合行业实际情况执行标签标识团体标准或制定团体联盟标准。

关键词：婴幼儿食品接触用制品标准标签标识

Increased excitatory amino acid transporter 2 levels in basolateral amygdala astrocytes mediate chronic stress–induced anxiety-like behavior

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Neural Regeneration Research 2025年第6期20卷 1721-1734页

作者： Xirong Xu Shoumin Xuan Shuai Chen Dan liu Qian Xiao jie Tu Shenzhen Key Laboratory of Neuroimmunomodulation for Neurological Diseases Shenzhen-Hong Kong Institute of Brain ScienceShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong ProvinceChina CAS Key Laboratory of Brain Connectome and Manipulation Brain Cognition and Brain Disease Institute(BCBDI)Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong ProvinceChina Guangdong Provincial Key Laboratory of Brain Connectome and Behavior the Brain Cognition and Brain Disease Institute(BCBDI)Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong ProvinceChina University of Chinese of Academy of Sciences BeijingChina Faculty of Life and Health Sciences Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong ProvinceChina

The conventional perception of astrocytes as mere supportive cells within the brain has recently been called into question by empirical evidence, which has revealed their active involvement in regulating brain function and encoding behaviors associated with ***, astrocytes in the basolateral amygdala have been found to play a role in the modulation of anxiety-like behaviors triggered by chronic stress. Nevertheless, the precise molecular mechanisms by which basolateral amygdala astrocytes regulate chronic stress–induced anxiety-like behaviors remain to be fully elucidated. In this study, we found that in a mouse model of anxiety triggered by unpredictable chronic mild stress, the expression of excitatory amino acid transporter 2 was upregulated in the basolateral amygdala. Interestingly, our findings indicate that the targeted knockdown of excitatory amino acid transporter 2 specifically within the basolateral amygdala astrocytes was able to rescue the anxiety-like behavior in mice subjected to stress. Furthermore, we found that the overexpression of excitatory amino acid transporter 2 in the basolateral amygdala, whether achieved through intracranial administration of excitatory amino acid transporter 2agonists or through injection of excitatory amino acid transporter 2-overexpressing viruses with GfaABC1D promoters, evoked anxiety-like behavior in mice. Our single-nucleus RNA sequencing analysis further confirmed that chronic stress induced an upregulation of excitatory amino acid transporter 2 specifically in astrocytes in the basolateral amygdala. Moreover, through in vivo calcium signal recordings, we found that the frequency of calcium activity in the basolateral amygdala of mice subjected to chronic stress was higher compared with normal *** knocking down the expression of excitatory amino acid transporter 2 in the basolateral amygdala, the frequency of calcium activity was not significantly increased, and anxiety-like behavior was ob

关键词： anxiety astrocytes basolateral amygdala behavior dihydrokainic acid excitatory amino acid transporter 2 fiber photometry glutamate LDN-212320 transporter

Identifying the dynamic behaviors in complete reconstruction of Co-based complex precatalysts during electrocatalytic oxygen evolution

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Journal of Energy Chemistry 2025年第1期100卷 226-233页

作者： Jingfang Zhang Danyang Wu Linke Cai Youluan Lu Fanpeng Cheng Lijuan shi Qun Yi Yao liu Yi Huang Key Laboratory of Green Chemical Engineering Process of Ministry of Education Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education Hubei Key Laboratory of Novel Reactor and Green Chemical Technology School of Chemical Engineering & Pharmacy Wuhan Institute of Technology Key Laboratory of Pesticide & Chemical Biology of Ministry of Education Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction of Ministry of Education College of Chemistry Central China Normal University College of Materials Science and Engineering Fuzhou University

Transition metal-based nanomaterials have emerged as promising electrocatalysts for oxygen evolution reaction（OER）. Considerable research efforts have shown that self-reconstruction occurs on these nanomaterials under operating conditions of OER process. However, most of them undergo incomplete reconstruction with limited thickness of reconstruction layer, leading to low component utilization and arduous exploration of real catalytic mechanism. Herein, we identify the dynamic behaviors in complete reconstruction of Co-based complexes during OER. The hollow phytic acid（PA） cross-linked CoFe-based complex nanoboxes with porous nanowalls are designed because of their good electrolyte penetration and mass transport ability, in favor of the fast and complete reconstruction. A series of experiment characterizations demonstrate that the reconstruction process includes the fast substitution of PA by OH-to form Co（Fe）(OH)xand subsequent potential-driven oxidation to Co（Fe）OOH. The obtained CoFeOOH delivers a low overpotential of 290 mV at a current density of 10 mA cm-2and a long-term *** experiment results together with theory calculations reveal that the Fe incorporation can result in the electron rearrangement of reconstructed CoFeOOH and optimization of their electronic structure,accounting for the enhanced OER activity. The work provides new insights into complete reconstruction of metal-based complexes during OER and offers guidelines for rational design of high-performance electrocatalysts.

关键词： Complete reconstruction Co-based complex Precatalysts Oxygen evolution reaction

Boosting hydrocarbon conversion via Cu-doping induced oxygen vacancies on CeO2 in CO2 electroreduction

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Journal of Energy Chemistry 2025年第1期100卷 66-76页

作者： Lei Xue Tong shi Chenhui Han Heng Zhang Fenrong liu Haorun Li Yan Wang Xiaojun Gu Shanghong Zeng Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials School of Chemistry and Chemical Engineering Inner Mongolia University State Key Laboratory of Coal Conversion Institute of Coal Chemistry Chinese Academy of Sciences Institute of Catalysis Department of Chemistry Zhejiang University National Key Laboratory of Baiyunobo Rare Earth Resource Research and Comprehensive Utilization Baotou Research Institute of Rare Earths

Conversion of CO2back to hydrocarbons is the most direct way of closing the“carbon cycle”,and its significance is further enlarged if this process is driven by renewable energies such as ***,precisely controlling the product selectivity towards hydrocarbons against the competitive hydrogen evolution remains challenging,especially for Cu-based ***,we report a novel defect engineering strategy,by which Cu-doping-induced oxygen vacancies on CeO2nanorods were effectively created,with adjustable vacancy/Cu *** resulting optimum catalyst shows up to 79% catalytic current density to hydrocarbons （excluding CO）,with 49% faradaic efficiency to *** and density functional theory unveil that the ratio between oxygen vacancy and Cu affects significantly the formation of*CHO and activation of H2O,which leads to the following deep hydrogenation to *** findings may spur new insights for designing and developing more controllable chemical process relevant to CO2utilization.

关键词： Oxygen vacancy Hydrocarbon production Reaction mechanism

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多层复合膜橄榄油总迁移量检测关键点的探究

粮油食品科技 2022年第6期30卷 147-152页

作者：韦存茜石鎏杰李海燕上海市质量监督检验技术研究院上海201114

旨在研究多层复合膜在进行橄榄油总迁移量实验过程中的关键点。将样品制成1.20 dm^(2)的试样,按照标准GB31604.8—2021进行橄榄油中总迁移量的测试。结果发现,相同材质样品水分敏感判定结果不同,水分敏感样品调理与不调理,橄榄油总迁移... 详细信息

旨在研究多层复合膜在进行橄榄油总迁移量实验过程中的关键点。将样品制成1.20 dm^(2)的试样,按照标准GB31604.8—2021进行橄榄油中总迁移量的测试。结果发现,相同材质样品水分敏感判定结果不同,水分敏感样品调理与不调理,橄榄油总迁移量结果差异大;试样挥发物测定的实验结果也会影响到最终总迁移量的值,不同的多层复合膜的试样挥发物测定结果不同;复合膜由于材质不同,对橄榄油的吸附能力不同,萃取橄榄油会影响结果判定。因此,橄榄油中总迁移量的测试结果应充分考虑到试样水分调理、挥发物测定、橄榄油萃取次数等步骤,以保证测试结果的准确性。

关键词：复合膜橄榄油总迁移量气相色谱法