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Co NP/NC hollow nanoparticles derived from yolk-shell structured ZIFs@polydopamine as bifunctional electrocatalysts for water oxidation and oxygen reduction reactions

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Journal of Energy Chemistry 2018年第4期27卷 1261-1267页

作者： jiao Zhao Feng Rong Yi Yao Wenjun Fan Mingrun Li Qihua Yang State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina Dalian National Laboratory for Clean Energy Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina The Key Laboratory of Fuel Cell Technology of Guangdong Province&The Key Laboratory of New Energy Technology of Guongdong Universities School of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhou 510641GuongdongChina

The pyrolysis under inert atmosphere has been widely used for the synthesis of metal containing heteroatoms doped carbon materials, versatile catalysts for various reactions. However, it is difficult to prevent metal nanoparticles aggregation during pyrolysis process. Herein, we reported the efficient synthesis of nitrogen doped carbon hollow nanospheres with cobalt nanoparticles （Co NP, ca. 10nm in size） distributed uniformly in the shell via pyrolysis of yolk-shell structured Zn-Co-ZIFs@polydopamine （PDA）. PDA acted as both protection layer and carbon source, which successfully prevented the aggregation of cobalt nanoparticles during high-temperature pyrolysis process. The Co NP and N containing carbon （Co NP/NC） hollow nanospheres were active for both oxygen evolution reaction （OER） and oxygen reduction reaction （ORR）, affording overpotential of 430 mV at 10 mA/cm2 for OER in 1 M KOH and comparable half-wave potential to that of Pt/C （0.80V vs RHE） for ORR in 0.1 M KOH. The superior performance of carbon hollow nanospheres for both OER and ORR was mainly attributed to its small metal nanoparticles, N-doping and hollow nanostructure. The protection and confinement effect that originated from PDA coating strategy could be extended to the synthesis of other hollow structured carbon materials, especially the ones with small metal nanoparticles.

关键词： Zeolitic imidazolate frameworks(ZIFs) Polydopamine(PDA) Carbon hollow nanoparticles Oxygen evolution reaction(OER) Oxygen reduction reaction(ORR)

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新型混合固定相的制备与性能评价

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高等学校化学学报 2009年第5期30卷 896-898页

作者：杨俊佼北京化工大学化工资源有效利用国家重点实验室北京100029

通过共聚交联方法将长链碳烯-苯乙烯包覆到锆胶表面上,得到聚合物包覆固定相,再对该填料进行磺化引入离子官能团到聚合物表面,得到混合型固定相.用扫描电镜和红外光谱对这些填料进行了表征,考察了混合型固定相的毛细管电色谱性能,并用... 详细信息

通过共聚交联方法将长链碳烯-苯乙烯包覆到锆胶表面上,得到聚合物包覆固定相,再对该填料进行磺化引入离子官能团到聚合物表面,得到混合型固定相.用扫描电镜和红外光谱对这些填料进行了表征,考察了混合型固定相的毛细管电色谱性能,并用该填料分离了苯甲酸和苯胺等化合物.

关键词：锆胶混合型固定相毛细管电色谱

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转移函数应用于变流器的谐波分析

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电工技术学报 2005年第9期20卷 108-113页

作者：刘宏焦连伟清华大学电机工程与应用电子技术系北京100084

运用转移函数法分析变流器两侧的谐波,考虑了晶闸管的换相过程以及触发角由于某种控制需要而受到余弦信号的调制过程,为工程实际中谐波的估算提供了方便和较为精确的方法。本文对转移函数作了简明的论述和推导;运用转移函数得到的谐波... 详细信息

运用转移函数法分析变流器两侧的谐波,考虑了晶闸管的换相过程以及触发角由于某种控制需要而受到余弦信号的调制过程,为工程实际中谐波的估算提供了方便和较为精确的方法。本文对转移函数作了简明的论述和推导;运用转移函数得到的谐波分析模型,对变流器端的谐波构成及其含量进行了分析;最后用仿真计算验证了公式的有效性和精确性。

关键词：转移函数变流器特征谐波谐波分析

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Rethinking Kawasaki disease diagnosis:Continuing the search for new biomarkers

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World Journal of Clinical Cases 2024年第30期12卷 6346-6348页

作者： Yan Pan Fu-Yong jiao Department of Pediatrics The First Affiliated Hospital of Yangtze UniversityJingzhou 434000Hubei ProvinceChina Shaanxi Kawasaki Disease Diagnosis and Treatment Center Children's HospitalShaanxi Provincial People's Hospital of Xi'anJiaotong UniversityXi'an 710000Shaanxi ProvinceChina

Recent findings by Yamashita et al report a Kawasaki disease(KD)case with normal biomarker levels,challenging traditional diagnostic *** editorial explores the implications of such atypical KD presentations,emphasizing the need for novel biomarkers and revised diagnostic *** case underscores the limitations of current biomarkers,the importance of clinical judgment,and the necessity for comprehensive research to identify new diagnostic *** technologies in proteomics and genomics offer potential avenues for discovering reliable *** clinical guidelines to incorporate flexibility for atypical presentations is *** timely and accurate KD diagnosis,even without elevated traditional biomarkers,prevents severe *** advancements should focus on novel biomarkers to improve patient outcomes.

关键词： Kawasaki disease Diagnostic criteria Guide line Biomarker Technologies

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Simulation and Risk Assessment of Sand Mixing Equipment Based on Function Failure Propagation

Simulation and Risk Assessment of Sand Mixing Equipment Base...

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作者： Shu-jie PANG Jian jiao School of Reliability and Systems Engineering Beihang University

Sand mixing equipment is one of the key equipment in the process of shale gas *** is a complex interaction between various components of the sand mixing *** failure of a single component could trigger a cascade of system *** view of this problem,we proposed a function failure identification and propagation model based on fuzzy *** Simulink software was used for modeling and *** as low as reasonably practicable principle is used to evaluate the risk levels of different failure *** comparing the analysis results of traditional FFIP method and fuzzy FFIP method,the practicability and effectiveness of fuzzy FFIP method were proved.

关键词： Sand mixing equipment Function failure identification Fuzzy theory Matlab Simulink

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Identification of Soybean Resources of Resistance to Aphids

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Agricultural Sciences in China 2009年第8期8卷 979-984页

作者： WU Tian-long,MA Xiao-hong,YAO Lu-ming and WANG Biao School of Agriculture and Biology,Shanghai jiao Tong University,Shanghai 200240,P.R.China School of Agriculture and Biology Shanghai Jiao Tong University Shanghai 200240 P. R. China

Four soybean [Glycine max （L.） Merr.] cultivars with soybean aphid resistance （Aphis glycines Matsmura）, p189, P203, P574, and P746, were identified in field test, choice test, and non-choice test, The grade of resistance to aphids and the damage index of P189, P203, and P746 were significantly different from the susceptible cultivars （P=0.05）. P574 and P746 showed antibiosis resistance, preventing aphids from reproducing on the plants. P203 showed antixenosis resistance, preventing aphids from reproducing in field test and choice test, but susceptible in non-choice test. Population development on plants was significantly different in field test, choice test, and non-choice test, which was caused by different selective pressures.

关键词： Aphis glycines Matsmura resistance to aphids antibiosis antixenosis

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Potential therapeutic effect of epigenetic therapy on Ireatment-induced neuroendocrine prostate cancer

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Asian Journal of Andrology 2017年第6期19卷 686-693页

作者： Xiang Xu Yu-Hua Huang Yan-Jing Li Alexa Cohen Zhen Li Jill Squires Wei Zhang Xu-Feng Chen Min Zhang jiao-Ti Huang School of Life Sciences Anhui University Hefei China Department of Pathology and Laboratory Medicine University of California at Los Angeles Los Angeles California USA Department of Urology The First Affiliated Hospital of SooChow University Suzhou China Department of Medical Oncology Rutgers Cancer Institute of New Jersey New Brunswick New Jersey USA Department of Pathology Beijing Hospital Beijing China

Although adenocarcinomas of the prostate are relatively indolent, some patients with advanced adenocarcinomas show recurrence of treatment-induced neuroendocrine prostate cancer, which is highly aggressive and lethal. Detailed biological features of treatment-induced neuroendocrine prostate cancer have not been characterized owing to limited biopsies/resections and the lack of a cellular model. In this study, we used a unique cellular model （LNCaP/NE1.8） to investigate the potential role of cancer stem cells in treatment-induced neuroendocrine prostate cancer with acquired resistance to hormonal therapy and chemotherapy. We also studied the role of cancer stem cells in enhancing invasion in treatment-induced neuroendocrine prostate cancer cells that recurred after long-term androgen-ablation treatment. Using an in vitro system mimicking clinical androgen-ablation, our results showed that the neuroendocrine-like subclone NE1.8 cells were enriched with cancer stem cells. Compared to parental prostate adenocarcinoma LNCaP cells, NE1.8 cells are more resistant to androgen deprivation therapy and chemotherapeutic agents and show increased cancer cell invasiveness. Results from this study also suggest a potential epigenetic therapeutic strategy using suberoylanilide hydroxamic acid, a histone deacetylase inhibitor, as a chemotherapeutic agent for therapy-resistant treatment-induced neuroendocrine prostate cancer cells to minimize the risk of prostate cancer recurrence and metastasis.

关键词： cancer stem cell epigenetic therapy hormonal therapy neuroendocrine prostate cancer suberoylanilide hydroxamic acid

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Study on the interface of direct hot rolling titanium-clad steel plates

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Baosteel Technical Research 2017年第1期11卷 32-39页

作者： SUN Jifeng LIANG Xiaojun jiao Sihai Research Institute Baoshan Iron&Steel Co.Ltd.Shanghai 201900China

In this study,the interface characteristics of a direct hot rolling titanium-clad steel plate were analyzed, and the mechanism of interface cracking was explored. The detrimental effect from the formation of TiFe ,TiC,and a Si-enriched layer on the bonding strength was clarified, and an industrial-scaled titanium-clad steel plate with shear strength over 200 MPa was produced with a carefully set schedule accordingly. It was found that hot rolling titanium-clad steel plates had a flat interface without obvious cracks. In the rolling process,both Ti and Fe atoms interdiflhsed,but Fe difthsed much faster than Ti. The Fe-diffused area consisted of three regions. After a high temperature heat treatment, the diffusion depth of Fe and Ti elements increased significantly and evident Si segregation and TiFe layers were identified. Thermal cracking initiated in the Si segregation layer and then propagated along the TiFe layer and Fe-diffused layer on the titanium side.

关键词： titanium-clad steel plate interface diffusion heat treatment

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对称相关免疫函数的构造

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北京邮电大学学报 2008年第3期31卷 59-62页

作者：莫骄温巧燕北京邮电大学理学院北京100876

n元一阶对称相关免疫函数的构造等价于某个线性方程在二元域上的求解.通过求解该线性方程的等价方程,在5种情形下求出了该线性方程的部分解,由此在5种情形下构造出了部分n元一阶对称相关免疫函数.其中4种情形的构造是新提出的.

关键词：对称函数相关免疫函数线性方程

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Controllable Construction and Enzyme Simulation of Metalorganic Architectures

Controllable Construction and Enzyme Simulation of Metalorga...

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第十一届全国化学生物学学术会议

作者：段春迎 Yang jiao 大连理工大学 State Key Laboratory of Fine Chemicals Dalian University of Technology

An artificial mimetic enzyme,compared to a natural enzyme,is a non-protein molecule and is simpler in structure,and the artificial mimetic enzyme can realize a combination with a substrate and the catalysis of the *** of metal-organic architectures with a unique species of functional molecular containers has obtained increasing attention due to its prominent recognition properties and fascinating reactivity reminiscent of the natural *** of the promising functionalities of architectures as artificial metalized host platforms,it is possible for these molecular hosts to mimic protein receptors or enzymes and also potential for effectively binding to substrates,stabilizing reactive intermediates or catalysing chemical *** we reported the synthesis and catalytic properties of several metal-organic hosts to investigate the possibility in the application of enzyme simulation[1,2].These metal-organic architectures could capsule guest molecular through specific inner spaces and bonding sites and realize natural enzyme ***-organic polyhedron can retain the enzyme activity and provide a good environment for the catalytic process.

关键词： Metal-organic architectures enzyme simulation controllable construction

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