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Sulfur vacancies and heterogeneous interfaces promote high performance sodium storage of bimetallic chalcogenide hollow nanospheres

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Journal of Energy Chemistry 2024年第8期95卷 596-610,I0013页

作者： Shiyue cao Xiaoting xu Qiming Liu Huijuan Zhu Ting Hu Key Laboratory of Artificial Micro-and Nano-structures of Ministry of Education School of Physics and TechnologyWuhan UniversityWuhan 430072HubeiChina

Transition metal sulfides have high theoretical capacities and are considered as potential anode materials for sodium-ion ***,due to low inherent conductivity and significant volume expansion,the electrochemical performance is greatly *** this study,a nickel/manganese sulfide material(Ni_(0.96)S_(x)/MnS_(y)-NC)with adjustable sulfur vacancies and heterogeneous hollow spheres was prepared using a simple *** introduction of a concentration-adjustable sulfur vacancy enables the generation of a heterogeneous interface between bimetallic sulfide and sulfur *** interface collectively creates an internal electric field,improving the mobility of electrons and ions,increasing the number of electrochemically active sites,and further optimizing the performance of Na~+*** direction of electron flow is confirmed by Density functional theory(DFT)*** hollow nano-spherical material provides a buffer for expansion,facilitating rapid transfer *** innovative discovery involves the interaction between the ether-based electrolyte and copper foil,leading to the formation of Cu_9S_5,which grafts the active material and copper current collector,reinforcing mechanical *** results in a new heterostructure of Cu_9S_5 with Ni_(0.96)S_(x)/MnS_(y),contributing to the stabilization of structural integrity for long-cycle ***,Ni_(0.96)S_(x)/MnS_(y)-NC exhibits excellent electrochemical properties following our modification *** stability performance,Ni0_(.96)S_(x)/MnS_(y)-NC demonstrates an average decay rate of 0.00944%after 10,000 cycles at an extremely high current density of 10000 mA g^(-1),A full cell with a high capacity of 304.2 mA h g^(-1)was also successfully assembled by using Na_(3)V_(2)(PO_(4))_(3)/C as the *** study explores a novel strategy for interface/vacancy co-modification in the fabrication of high-performance sodium-ion batteries electrode.

关键词： Sulfur vacancies Heterogeneous interface Interactions Sodium ion batteries

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儿童阑尾膀胱瘘1例报告并文献复习

中华泌尿外科杂志 2024年第8期45卷 619-623页

作者：方政严向明张婷曹戌汪添益王洪超刘俊冯婷孙毅戴澍苏州大学附属儿童医院泌尿外科苏州215003 苏州大学附属儿童医院超声科苏州215003 苏州大学苏州215003

目的探讨儿童阑尾膀胱瘘(AVF)的诊断与治疗。方法回顾性分析2023年3月苏州大学附属儿童医院收治的1例AVF患儿的临床资料。患儿,男,6岁11个月。因排尿困难伴腹泻2周于2023年3月21日入院。CT检查示膀胱结石。术前诊断为膀胱结石。全麻下... 详细信息

目的探讨儿童阑尾膀胱瘘(AVF)的诊断与治疗。方法回顾性分析2023年3月苏州大学附属儿童医院收治的1例AVF患儿的临床资料。患儿,男,6岁11个月。因排尿困难伴腹泻2周于2023年3月21日入院。CT检查示膀胱结石。术前诊断为膀胱结石。全麻下行经尿道膀胱镜激光碎石术。术后2周余,患儿再次出现尿频、尿痛和腹泻症状,尿常规检查提示泌尿系感染。予抗感染治疗1个月余,疗效不佳,且出现气尿、粪尿症状,腹泻症状加重,考虑患儿肠道膀胱间存在瘘道可能。膀胱超声造影检查示造影剂微泡由膀胱右后壁向外溢出,流入肠道内。增强MRI检查示膀胱右后方上缘一小尖管状影,管腔内可见条状明显强化影。术前诊断为AVF。行膀胱镜检查见膀胱右侧壁一乳头样凸起,凸起处未见明显瘘口和异物排出。行机器人辅助腹腔镜膀胱部分切除术、阑尾切除术、肠粘连松解术。结果术后使用头孢哌酮钠舒巴坦钠抗感染治疗10d,并留置导尿管13d,患者恢复可,拔除导尿管后痊愈出院。随访11个月无特殊不适。结论儿童AVF罕见,可首选膀胱超声造影和MRI检查,结合间断性气尿、粪尿,以及膀胱结石并腹泻等特异性表现进行诊断,可行腹腔镜手术或机器人辅助腹腔镜手术治疗。

关键词：儿童阑尾膀胱瘘机器人辅助腹腔镜手术超声造影

Neutralization of excessive levels of active TGF-β1 reduces MSC recruitment and differentiation to mitigate peritendinous adhesion

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Bone Research 2023年第2期11卷 368-383页

作者： Yu Sheng Li Xiao Wang Bo Hu Qi Sun Mei Wan Andrew Carr Shen Liu xu cao Department of Orthopedic Surgery The Johns Hopkins University School of MedicineBaltimoreMD21205USA Nuffield Department of Orthopedics Rheumatology and Musculoskeletal SciencesBotnar Research CentreUniversity of OxfordWindmill RoadOxford OX 37 LDUK

PPeritendinous adhesion formation(PAF)can substantially limit the range of motion of ***,the origin of myofibroblasts in PAF tissues is still *** this study,we found that the concentration of active TGF-β1 and the numbers of macrophages,mesenchymal stromal cells(MSCs),and myofibroblasts in human and mouse adhesion tissues were ***,knockout of TGF-β1 in macrophages or TGF-β1R2 in MSCs inhibited PAF by reducing MSC and myofibroblast infiltration and collagenⅠandⅢdeposition,***,we found that MSCs differentiated into myofibroblasts to form adhesion *** injection of the TGF-β–neutralizing antibody 1D11 during the granulation formation stage of PAF significantly reduced the infiltration of MSCs and myofibroblasts and,subsequently,*** results suggest that macrophage-derived TGF-β1 recruits MSCs to form myofibroblasts in peritendinous *** improved understanding of PAF mechanisms could help identify a potential therapeutic strategy.

关键词： inhibited injection MSC

Spectral resource defragmentation based on PCE in flexible bandwidth optical networks

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The Journal of China Universities of Posts and Telecommunications 2012年第6期19卷 105-112页

作者： LIN Qun ZHAO Yong-li cao xu-ping YU Xiao-song TANG Ting-ting ZHANG Jie State Key Laboratory of Information Photonics and Optical Communications Beijing University of Posts and Telecommunications

The granularity of the flexible bandwidth optical network is the spectral slots, which is much smaller than that of the wavelength switch optical network. For the dynamic clients＇ connections setup and tear down processes, it will give rise to fragmentation of spectral resources. It is the decline in the probability of finding sufficient contiguous spectrum for new connections that result in the fragmentation of spectral resource. To be more specific, these spectra may be unavailable and waste. In this case, the severe waste of the spectrum will lead to low efficiency in spectral utilization and will not adapt to large capacity requirements of transmission in the future. Because path computation element （PCE） framework has the characteristics of the central disposal and deployment of the spectrum resource, we construct the spectral resource allocation scenario based on PCE framework in the flexible bandwidth optical network to use spectrum resource effectively Based on the principle of the generation of the fragmentation, we put forward a spectrum resource defragmentation algorithm to consolidate the available spectrum for clients＇ connections. The simulation results indicate that this algorithm is able to reduce fragmentation of network, improve the continuity of spectral resource, reduce the blocking rate of services in the network and improve the spectral efficiency significantly.

关键词： flexible bandwidth optical network PCE framework spectral fragmentation spectral resource defragmentation

Enzymatic C1 reduction using hydrogen in cofactor regeneration

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Frontiers of Chemical Science and Engineering 2024年第7期18卷 33-40页

作者： Ruishuang Sun Chenqi cao Qingyun Wang Hui cao Ulrich Schwaneberg Yu Ji Luo Liu Haijun xu Beijing Bioprocess Key Laboratory Beijing University of Chemical TechnologyBeijing 100029China Institute of Biotechnology Rheinisch-Westfälische Technische Hochschale(RWTH)AachenAachen 52074Germany

Carbon dioxide fixation presents a potential solution for mitigating the greenhouse gas *** carbon dioxide fixation,C1 compound reduction requires a high energy *** calculations suggest that the energy source for cofactor regeneration plays a vital role in the effective enzymatic C1 *** utilizes renewable hydrogen to achieve the regeneration and supply cofactor nicotinamide adenine dinucleotide(NADH),providing a driving force for the reduction reaction to reduce the thermodynamic barrier of the reaction cascade,and making the forward reduction pathway thermodynamically *** on the regeneration of cofactor NADH by hydrogenase,and coupled with formaldehyde dehydrogenase and formolase,a favorable thermodynamic mode of the C1 reduction pathway for reducing formate to dihydroxyacetone(DHA)was designed and *** resulted in accumulation of 373.19μmol·L^(-1) DHA after 2 h,and conversion reaching 7.47%.These results indicate that enzymatic utilization of hydrogen as the electron donor to regenerate NADH is of great significance to the sustainable and green development of bio-manufacturing because of its high economic efficiency,no by-products,and environment-friendly ***,formolase efficiently and selectively fixed the intermediate formaldehyde(FALD)to DHA,thermodynamically pulled formate to efficiently reduce to DHA,and finally stored the low-grade renewable energy into chemical energy with high energy density.

关键词： [NiFe]-hydrogenase SH formolase NADH regeneration C1 compound reduction thermodynamic calculation

Conversion of NO with a catalytic packedbed dielectric barrier discharge reactor

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Plasma Science and Technology 2017年第11期19卷 67-74页

作者： xu cao Weixuan ZHAO Renxi ZHANG Huiqi HOU Shanping CHEN Ruina ZHANG Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention （LAP^3） Institute of Environmental Science Fudan University Shanghai 200433 People＇s Republic of China Shanghai Institute for Design ＆ Research on Environmental Engineering Shanghai 200232 People＇s Republic of China

This paper discusses the conversion of nitric oxide（NO） with a low-temperature plasma induced by a catalytic packed-bed dielectric barrier discharge（DBD） reactor. Alumina oxide（Al2O3）,glass（SiO2） and zirconium oxide（ZrO2）, three different spherical packed materials of the same size, were each present in the DBD reactor. The NO conversion under varying input voltage and specific energy density, and the effects of catalysts（titanium dioxide（TiO2） and manganese oxide（Mn Ox） coated on Al2O3） on NO conversion were investigated. The experimental results showed that NO conversion was greatly enhanced in the presence of packed materials in the reactor, and the catalytic packed bed of Mn Ox/Al2O3 showed better performance than that of TiO2/Al2O3. The surface and crystal structures of the materials and catalysts were characterized through scanning electron microscopy analysis. The final products were clearly observed by a Fourier transform infrared spectrometer and provided a better understanding of NO conversion.

关键词： dielectric barrier discharge materials catalysts NO electrical field

Aberrant activation of latent transforming growth factor-β initiates the onset of temporomandibular joint osteoarthritis

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Bone Research 2018年第4期6卷 383-392页

作者： Liwei Zheng Caixia Pi Jun Zhang Yi Fan Chen Cui Yang Zhou Jianxun Sun Quan Yuan Xin xu Ling Ye xu cao xuedong Zhou State Key Laboratory of Oral Diseases National Clinical Research Center for Oral Diseases West China Hospital of Stomatology Sichuan University Department of Orthopaedic Surgery School of Medicine Johns Hopkins University

There is currently no effective medical treatment for temporomandibular joint osteoarthritis(TMJ-OA) due to a limited understanding of its pathogenesis. This study was undertaken to investigate the key role of transforming growth factor-β(TGF-β)signalling in the cartilage and subchondral bone of the TMJ using a temporomandibular joint disorder(TMD) rat model, an ageing mouse model and a Camurati–Engelmann disease(CED) mouse model. In the three animal models, the subchondral bone phenotypes in the mandibular condyles were evaluated by μCT, and changes in TMJ condyles were examined by TRAP staining and immunohistochemical analysis of Osterix and p-Smad2/3. Condyle degradation was confirmed by Safranin O staining, the Mankin and OARSI scoring systems and type X collagen(Col X), p-Smad2/3 a and Osterix immunohistochemical analyses. We found apparent histological phenotypes of TMJ-OA in the TMD, ageing and CED animal models, with abnormal activation of TGF-βsignalling in the condylar cartilage and subchondral bone. Moreover, inhibition of TGF-β receptor I attenuated TMJ-OA progression in the TMD models. Therefore, aberrant activation of TGF-β signalling could be a key player in TMJ-OA development.

关键词： TMJ OA TMD Aberrant activation of latent transforming growth factor initiates the onset of temporomandibular joint osteoarthritis

Application of Improved Z-Buffer Technique to RCS Computation

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Wuhan University Journal of Natural Sciences 1998年第1期3卷 53-55页

作者： cao Qinfeng, xu Penggen(College of Electronic Information, Wuhan University, Wuhan 430072, China) Wuhan University College of Electronic Information Wuhan China (GRID:grid.49470.3e) (ISNI:***)

This paper presents a new method for computation of the monostatic radar cross section (RCS) of electrically large conducting objects. Compared with the traditional Z-buffer technique, the improved one can record not only the illuminated surface of the body, but also the information about the shadowed part. So multi-scattering and RCS of cavity can be calculated. The second advantage of it is using dual representation, of the target's facet surface, in which the illuminated part is treated as bicubic patches for RCS calculation, and is simplified to flat facet when ray tracing is done. Excellent agreement with the experiment has been obtained.

关键词： Key words RCS complex target Z buffer EM scattering

Aequorea taiwanensis n. sp. (Hydrozoa,Leptomedusae) and mtCOI sequence analysis for the genus Aequorea

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Acta Oceanologica Sinica 2009年第1期28卷 109-115页

作者： ZHENG Lianming LIN Yuanshao LI Shaojing cao Wenqing xu Zhenzu HUANG Jiaqi Department of Oceanography Xiamen University Xiamen 361005 China

Nine species of Prionospio complex are recorded from China＇s waters,including one new species and six newly recorded ***（Prionospio） pacifica ***.,is characterized by having first and forth pairs of branchiae pinnate,second and third pairs of apinnate,ventral crest on Setiger 9 and dorsal crests on Setigers *** kirrae（Wilson,1990）,Prionospio（Aquilaspio） convexa Imajima,1990,Prionospio（Minuspio） multibranchiata Berkeley,1927,Prionospio（Prionospio） bocki Sderstrm,1920,Prionospio（Prionospio） dubia Maciolek,1985 and Prionospio（Prionospio） paradisea Imajima,1990 are recorded for the first time from China＇s waters.

关键词： Aequorea new species Aequorea taiwanensis n. sp. mtCOI sequence analysis