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World Journal of Clinical Cases 2022年第30期10卷 11016-11022页

作者： hui Yang Shuang-Zhu Lin Shi-hui guan Wan-Qi Wang Jia-Yi Li Gui-Dan Yang Su-Li Zhang Department of Neonatology Hainan Women and Children's Medical CenterHaikou 570100Hainan ProvinceChina Diagnosis and Treatment Center for Children The First Affiliated Hospital to Changchun University of Chinese MedicineChangchun 130021Jilin ProvinceChina Changchun University of Chinese Medicine Changchun 130000Jilin ProvinceChina

BACKGROUND The VPS33B(OMIM:608552)gene is located on chromosome *** found a female infant with autosomal recessive arthrogryposis,renal dysfunction and cholestasis syndrome 1(ARCS1)caused by mutation in *** child was diagnosed with ARCS1(OMIM:208085)after the whole exome sequencing revealed two heterozygous mutations(c.96+1G>C,c.242delT)in the VPS33B *** SUMMARY We report a Chinese female infant with neonatal cholestasis disorder,who was eventually diagnosed with ARCS1 by genetic *** testing revealed two new mutations(c.96+1G>C and c.242delT)in VPS33B,which is the causal *** patient was compound heterozygous,and her parents were both *** This study extends the mutational spectrum of the VPS33B gene to provide a molecular basis for the etiological diagnosis of ARCS1 and for genetic counseling of the family.

关键词： Arthrogryposis,renal dysfunction and cholestasis syndrome 1 VPS33B gene Children Heterozygous mutation Case report

正压呼吸防护装备高速无刷电机调速系统仿真研究

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制造业自动化 2024年第8期46卷 174-179页

作者：赵新通王天宇管健晖胡涌鑫哈尔滨理工大学机械动力工程学院黑龙江哈尔滨150080

在国内疫情防控逐渐放开的大背景下,正压呼吸防护装备对于高密度接触患者的医护人员来说仍至关重要。鉴于高速无刷电机在转速稳定性方面的高精度控制性能,设计了一种自适应模糊控制器,可以降低由于非线性的目标对象而产生的控制误差。... 详细信息

在国内疫情防控逐渐放开的大背景下,正压呼吸防护装备对于高密度接触患者的医护人员来说仍至关重要。鉴于高速无刷电机在转速稳定性方面的高精度控制性能,设计了一种自适应模糊控制器,可以降低由于非线性的目标对象而产生的控制误差。在转速环的基础上设计电流环,构成双闭环的控制系统,同基于传统PID控制器的单闭环以及双闭环控制系统进行对比。实验结果表明:在转速环基于模糊PID的双闭环系统控制作用下,其输出转速的动态性能指标均要优于其他两种控制方式,这就意味着该系统的准确性、快速性以及稳定性更为优秀,能达到较为理想的控制效果。

关键词：正压呼吸防护装备高速无刷电机单闭环双闭环模糊PID

Formation of microchimerism in rat small bowel transplantation by spienocyte infusion

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World Journal of Gastroenterology 2006年第26期12卷 4166-4169页

作者： Da-Xun Piao Tao Jiang Lian-Xin Liu An-Long Zhu Shao-Feng Jin Ying-hui guan Department of General Surgery the First Affiliated Hospital of Harbin Medical University Harbin 150001 Heilongjiang Province China Department of General Surgery the Affiliated Hospital of Harbin Institute of Technology Harbin 150001 Heilongjiang Province China Department of General Surgery the Fourth Affiliated Hospital of Harbin Medical University Harbin 150001 Heilongjiang Province China

AIM： To investigate the effect of donor splenocyte infusion combined with cyclosporine A （CsA） on rejection of rat small bowel transplantation （SBT）. METHODS： Male Sprague-Dawley （SD） rats and female Wistar rats weighing 230-270 g were used as donors and recipients respectively in the study. Heterotopic small bowel transplantation was performed. The rats were divided into three groups： group one receiving allotransplantation （SD→Wistar）, group two receiving allotransplantation （SD→Wistar）＋ donor splenocyte infusion, group three receiving allotransplantation （SD →Wistar）＋ donor splenocyte infusion ＋ CsA followed by CsA 10 mg/kg per day after transplantation, in which recipient Wistar rats were injected with 2 ×10^8 SD splenocytes 28 d before transplantation, and treated with CsA after transplantation. Finally, the specific DNA fragment of donor Y chromosome was detected in recipient peripheral blood and skin by PCR. The survival time after small bowel transplantation was observed. Gross and histopathological examinations were performed. RESULTS： The survival time after small bowel transplantation was 7.1 ± 1.2 d in group 1, 18.4 ± 3.6 d in group 2 and 31.5± 3.1 d in group 3. The survival time was significant longer （P 〈 0.01） in group 3 than in groups 1 and 2. The gross and histopathological examination showed that the rejection degree in group 3 was lower than that in groups 1 and ***： Donor splenocyte infusion combined with CsA decreases remarkably the rejection and prolongs the survival time after rat small bowel transplantation.

关键词： Microchimerism Splenocyte infusion Immunologic tolerance Small bowel transplantation

Surface Oxidation of Single-walled-carbon-nanotubes with Enhanced Oxygen Electroreduction Activity and Selectivity

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Chinese Journal of Structural Chemistry 2021年第5期40卷 533-539,527页

作者： CUI Ya-Qi XU Jiao-Xing WANG Mei-Lin guan Lun-hui College of Chemistry and Materials Science Fujian Normal UniversityFuzhou 350007China CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Provincial Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350108China

Electrochemical oxygen reduction reaction(ORR) with 2-electron process is an alternative for decentralized H_(2)O_(2) production, but it remains high challenging to develop highly active and selective catalysts for this process. In this work, we present a selective and efficient nonprecious electrocatalyst, prepared through an easily scalable mild oxidation of single-walled carbon nanotubes(SWNTs) with different oxidative acids including sulfur acid, nitride acid and mixed sulfuric/nitric acids, respectively. The high-degree oxidized SWNTs treated by mixed acids exhibit the highest activity and selectivity of electroreduction of oxygen to synthesize H_(2)O_(2) at low overpotential in alkaline and neutral media. Spectroscopic characterizations suggested that the C–O is vital for catalyzing 2-electron ORR, providing an insightful understanding of defected carbon surface as the active catalytic sites for 2-electron ORR.

关键词： electrocatalysts hydrogen peroxide production oxygen reduction reaction

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食醋中γ-氨基丁酸的检测及变化规律研究

食品安全质量检测学报 2024年第9期15卷 197-204页

作者：张芳耿思奕韩华凤刘嘉慧刘冠卉郑博强屠洁江苏科技大学粮食学院镇江212100 广西农业职业技术大学食品药品研究院南宁530007 江苏科技大学生物技术学院镇江212100

目的建立快速准确检测高酸度食醋中γ-氨基丁酸(γ-aminobutyric acid,GABA)含量的方法。方法建立高效液相色谱法检测食醋中GABA含量的方法并进行方法学验证,通过检测不同原料、酿造方法、发酵阶段、贮藏时间的32种食醋样品,分析GABA变... 详细信息

目的建立快速准确检测高酸度食醋中γ-氨基丁酸(γ-aminobutyric acid,GABA)含量的方法。方法建立高效液相色谱法检测食醋中GABA含量的方法并进行方法学验证,通过检测不同原料、酿造方法、发酵阶段、贮藏时间的32种食醋样品,分析GABA变化规律。结果该方法在0.01~1.00mg/m L范围内线性关系良好,R2为0.9992,精密度试验相对标准偏差小于2.0%,回收率在96.4%~103.0%之间,精密度和准确性均符合方法学要求。不同原料食醋的GABA含量差异显著(P<0.05),谷物醋含量最高;传统发酵工艺和菌种酿造的食醋GABA高于液体发酵、纯菌种发酵食醋(P<0.05);秋季醋GABA含量高于冬季醋(P<0.05);醋酸发酵阶段的GABA累积量高于酒精发酵(P<0.05),适当陈酿可提高产品中GABA含量;商品醋中GABA的衰减符合一级动力学反应;发芽糙米醋的GABA含量是未发芽糙米醋的2.29倍,是精米醋的4.73倍。结论所建立的检测方法GABA出峰时间为12min,分离度大于2,可快速、准确分析食醋中GABA。食醋中GABA含量与食醋原料、工艺、菌种、生产季节、贮藏时间等相关。以多种谷物或发芽谷物为原料,采用传统固态发酵工艺,秋季酿制,并适当延长陈酿时间有利于食醋中GABA的生成。

关键词： γ-氨基丁酸醋高效液相色谱法变化规律

Modulating of MoSe_(2)functional plane via doping-defect engineering strategy for the development of conductive and electrocatalytic mediators in Li-S batteries

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Journal of Energy Chemistry 2022年第12期75卷 512-523,I0013页

作者： Mohammed A.Al-Tahan Yutao Dong Aml E.Shrshr Xiyang Kang hui guan Yumiao Han Zihao Cheng Weihua Chen Jianmin Zhang College of Chemistry Zhengzhou UniversityZhengzhou 450001HenanChina College of Science Henan Agricultural UniversityZhengzhou 450002HenanChina Chemistry Department Faculty of ScienceAl-Azhar UniversityAssiut 71524Egypt

The lithium polysulfide shuttle and sluggish sulfur reaction kinetics still pose significant challenges to lithium-sulfur(Li-S)*** functional plane of Fe-MoSe_(2)@r GO nanohybrid with abundant defects has been designed and applied in Li-S batteries to develop the functional separator and multi-layer sulfur *** cell with a functional separator exhibits a retention capacity of 462 m Ah g^(-1)after the 1000th at 0.5 C and 516 m Ah g^(-1)after the 600th at 0.3 *** at low electrolyte conditions(7.0μL_(mgsulfur)^(-1)and 15μL_(mgsulfur)^(-1))under high sulfur loadings(3.46 mg cm^(-2)and 3.73 mg cm^(-2)),the cell still presents high reversible discharge capacities 679 and 762 m Ah g^(-1)after 70 cycles,***,at sulfur loadings up to 8.26 and 5.2 mg cm^(-2),the cells assembled with the bi-layers sulfur cathode and the tri-layers sulfur cathode give reversible capacities of 3.3 m Ah cm^(-2)after the 100th cycle and 3.0 m Ah cm^(-2)after the 120th cycle,*** research not only demonstrates that the FeMoSe_(2)@r GO functional plane is successfully designed and applied in Li-S batteries with superior electrochemical performances but also paves the novel way for developing a unique multi-layer cathode technique to enhance and advance the electrochemical behavior of Li-S cells at a high-sulfur-loading cathode under lean electrolyte/sulfur(E/S)ratio.

关键词： Lithium-sulfur batteries Modified separator Fe-MoSe_(2)@rGO Multi-layers cathode Defect engineering

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核电仪控设备的5G改造及应用研究

中国核电 2024年第4期17卷 494-499页

作者：彭伟伦吴广皓单巍伟肖安洪曾辉王娇关晖孙国伟骆琼刚中国核动力研究设计院核反应堆系统设计技术重点实验室四川成都610213

该文选取核电环境监测系统(KRS)进行5G改造研究。通过研制具有透传功能的5G终端,实现核电环境监测数据通过5G信号接入主控室NC级DCS系统,并就现场环境进行试验,对设备穿透能力、抗干扰能力、干扰度等进行实际测量。试验结果表明,该5G改... 详细信息

该文选取核电环境监测系统(KRS)进行5G改造研究。通过研制具有透传功能的5G终端,实现核电环境监测数据通过5G信号接入主控室NC级DCS系统,并就现场环境进行试验,对设备穿透能力、抗干扰能力、干扰度等进行实际测量。试验结果表明,该5G改造方案适用于采集类、透传类核电仪控设备改造,为现有仪控设备数字化改造提出了新的解决思路。

关键词： 5G 仪控设备改造环境监测数据通信核电协议

Theoretical Aspects on Doped-Zirconia for Solid Oxide Fuel Cells:from Structure to Conductivity

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Chinese Journal of Chemical Physics 2021年第2期34卷 125-136,I0001页

作者： Shu-hui guan Zhi-pan Liu Shanghai Academy of Agricultural Sciences Shanghai 201403China Collaborative Innovation Center of Chemistry for Energy Material Shanghai Key Laboratory of molecular Catalysis and Innovative MaterialsKey Laboratory of Computational Physical ScienceDepartment of ChemistryFudan UniversityShanghai 200438China

Solid oxide fuel cells(SOFCs)are regarded to be a key clean energy system to convert chemical energy(e.g.H_(2) and O_(2))into electrical energy with high efficiency,low carbon footprint,and fuel *** electrolyte,typically doped zirconia,is the"state of the heart"of the fuel cell technologies,determining the performance and the operating temperature of the overall *** stabilized zirconia(YSZ)have been widely used in SOFC due to its excellent oxide ion conductivity at high *** composition and temperature dependence of the conductivity has been hotly studied in experiment and,more recently,by theoretical *** characterization of the atomic structure for the mixed oxide system with different compositions is the key for elucidating the conductivity behavior,which,however,is of great challenge to both experiment and *** review presents recent theoretical progress on the structure and conductivity of YSZ *** compare different theoretical methods and their results,outlining the merits and deficiencies of the *** highlight the recent results achieved by using stochastic surface walking global optimization with global neural network potential(SSW-NN)method,which appear to agree with available experimental *** advent of machine-learning atomic simulation provides an affordable,efficient and accurate way to understand the complex material phenomena as encountered in solid *** future research directions for design better electrolytes are also discussed.

关键词： Solid oxide fuel cells Yttria stabilized zirconia Conductivity Atomistic structure Theoretical aspects

Fluorescence and Photosensitizing Behavior of N-(p-Phenoxyphenyl)methacrylamide and Its Polymer

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Chemical Research in Chinese Universities 2002年第1期18卷 56-60页

作者： GAO Qing-yu LIU Zhi-gui guan hui-li YANG Geng-xu YU Xian-da Laboratory of Lubrication and Functional Materials Henan UniversityKaifeng 475001P.R.China Lanzhou Institute of Chemistry and Physics Chinese Academy of ScienceLanzhou 730000P.R.China

A novel acrylic monomer bearing aromatic ethereality group N-(p -phenoxy-phenyl) methacrylamide(MAPOA) was synthesized and polymerized. The fluorescence spectra of MAPOA and its polymer were studied, showing that the polymer displays a stronger fluorescence than its monomer at the same chromophore concentration. The fluorescence of P(MAPOA) was quenched by adding electron deficiency monomers such as MMA, AN etc .. It is another example of showing the 'fluorescence structural self-quenching effect' as we reported previously, from which it is demonstrated again that this phenomenon is not an accidental one but a common effect for acrylic monomers bearing electon-donating chromophores. The photopolymerization of AN sensitized by MAPOA and P(MAPOA) was studied. The kinetic equation of the polymerization was obtained and represented as follows:  R _p∝ 0.38 × 0.78 , R _p∝ 0.33 × 0.71  The overall activation energies were determined to be E_ a =24\^22 kJ/mol(MAPOA) and E_ a =26\^31 kJ/mol  respectively. The fluorescence analysis of the resulted P(AN) showed that the sensitizer also entered into the P(AN) chains. A mechanism of the formation of a charge transfer complex and free radical initiation was suggested for the photopolymerization of AN sensitized by MAPOA and P(MAPOA).

关键词： N-(p -Phenoxy-phenyl)methacrylamide Fluorescence Structural self-quenching effect Acrylonitrile Photopolymerization

Effect of Mn addition on microstructure and mechanical properties of GX40CrNiSi25-12 austenitic heat resistant steel

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China Foundry 2024年第3期21卷 205-212页

作者： guan-yu Jiang Meng-wu Wu Xiao-guang Yang hui Wang Yu-yuan Zhu Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of TechnologyWuhan 430070China Hubei Longzhong Laboratory Xiangyang 441000HubeiChina Wescast Industries(China)Co. Ltd.Wuhan 430100China

Three types of steels were designed on the basis of GX40CrNiSi25-12 austenitic heat resistant steel by adding different Mn contents(2wt.%,6wt.%,and 12wt.%).Thermodynamic calculation,microstructure characterization and mechanical property tests were conducted to investigate the effect of Mn addition on the microstructure and mechanical properties of the austenitic heat resistant *** show that the matrix structure in all the three types of steels at room temperature is completely *** NbC and M_(23)C_(6)precipitate at grain boundaries of austenite *** the increase of Mn content,the number of carbides increases and their distribution becomes more *** the Mn content increases from 1.99%to 12.06%,the ultimate tensile strength,yield strength and elongation increase by 14.6%,8.0%and 46.3%,*** improvement of the mechanical properties of austenitic steels can be explained by utilizing classic theories of alloy strengthening,including solid solution strengthening,precipitation strengthening,and grain *** increase in alloy strength can be attributed to solid solution strengthening and precipitation strengthening caused by the addition of *** improvement of the plasticity of austenitic steels can be explained from two aspects:grain refinement and homogenization of precipitated phases.

关键词： austenitic heat resistant steel manganese microstructure mechanical properties