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On 1-rate and 2-rate multicast 3-stage clos networks

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Applied Mathematics(A Journal of chinese Universities) 2009年第2期24卷 151-156页

作者： DOU Wen-qing YAO en-yu Dept. of Math. Shanghai Second Polytechnic Univ. Shanghai 201209 China Dept. of Math. Zhejiang Univ. Zhejiang 310027 China

The 3-stage clos network c（n, m, r） is considered as the most basic and popular multistage interconnection network which has been widely employed for data communications and parallel computing systems. Quite a lot of efforts has been put on the research of the 3- stage clos network. Unfortunately, very little is known for the multirate multicast clos network which is the most complicated case. Firstly a suffic.ent condition for 1-rate multicast networks to be SNB is given, from which a result for 2-rate multicast networks to be WSNB can easily be gotten. Furthermore, by using a reservation-scheme routing, more specific result for 2-rate multicast networks to be WSNB can be obtained for the case of one of them exceeding 1/2.

关键词： 3-stage clos network multirate multicast network strictly nonblocking wide-sense nonblocking

Gradient‑Layered MXene/Hollow Lignin Nanospheres Architecture Design for Flexible and Stretchable Supercapacitors

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Nano-Micro Letters 2025年第2期17卷 447-462页

作者： Haonan Zhang c.eng Hao Tongtong Fu Dian yu Jane Howe Kaiwen c.en Ning Yan Hao Ren Huamin Zhai Jiangsu Provincial Key Lab of Sustainable Pulp and Paper Technology and Biomass Materials NanJing Forestry UniversityNanjing 210037People’s Republic of China Department of chemical engineering and Applied chemistry University of Toronto200 College StreetTorontoON M5S 3E5Canada Department of Materials Sc.ence and engineering University of Toronto184 College StreetTorontoON M5S 3E4Canada college of Materials Sc.ence and engineering Nanjing Forestry UniversityNanjing 210037People’s Republic of China

With the rapid development of flexible wearable electronics,the demand for stretchable energy storage devices has *** this work,a novel gradient-layered architecture was design based on single-pore hollow lignin nanospheres(HLNPs)-intercalated two-dimensional transition metal carbide(Ti_(3)c_(2)T_(x) MXene)for fabricating highly stretchable and durable *** depositing and inserting HLNPs in the MXene layers with a bottom-up decreasing gradient,a multilayered porous MXene structure with smooth ion channels was constructed by reducing the overstacking of MXene ***,the micro-chamber architecture of thin-walled lignin nanospheres effectively extended the contact area between lignin and MXene to improve ion and electron accessibility,thus better utilizing the pseudocapacitive property of *** these strategies effectively enhanced the capacitive performance of the *** addition,HLNPs,which acted as a protective phase for MXene layer,enhanced mechanical properties of the wrinkled stretchable electrodes by releasing stress through slip and deformation during the stretch-release cycling and greatly improved the structural integrity and capacitive stability of the *** electrodes and symmetric flexible all-solid-state supercapacitors capable of enduring 600%uniaxial tensile strain were developed with high specific capacitances of 1273 mF cm^(−2)(241 F g^(−1))and 514 mF cm^(−2)(95 F g^(−1)),***,their capacitances were well preserved after 1000 times of 600%stretch-release *** study showcased new possibilities of incorporating biobased lignin nanospheres in energy storage devices to fabricate stretchable devices leveraging synergies among various two-dimensional nanomaterials.

关键词： Hollow lignin nanospheres MXene Gradient-layered architecture Wrinkled electrodes Stretchable supercapacitors

characteristic Numbers of Matrix Lie Algebras

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communications in Theoretical Physics 2008年第4期49卷 845-850页

作者： ZHANG yu-Feng FAN en-Gui Mathematical School Liaoning Normal University Dalian 116029 China Institute of Mathematics Fudan University Shanghai 200433 China

A notion of characteristic number of matrix Lie algebras is defined, which is devoted to distinguishing various Lie algebras that are used to generate integrable couplings of soliton equations. That is, the exact classification of the matrix Lie algebras by using computational formulas is given. Here the characteristic numbers also describe the relations between soliton solutions of the stationary zero curvature equations expressed by various Lie algebras.

关键词： characteristic number Lie algebra integrable couplings

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Pouchitis

World Journal of Gastroenterology 2007年第42期13卷 5598-5604页

作者： en-Da yu Zhuo Shao Bo Shen Department of colorectal Surgery Shanghai Changhai Hospital Shanghai 200438 China Department of Biliary Surgery Eastern Hepatobiliary Hospital Shanghai 200438 China Digestive Disease center Cleveland Clinic ClevelandOH 44195 United States

While restorative proctocolectomy with ileal pouch-anal anastomosis has significantly improved the quality of life in patients with underlying ulcerative colitis who require surgery,complications can *** as the most common long-term complication represents a spectrum of disease processes ranging from acute,antibiotic-responsive type to chronic antibiotic-refractory *** diagnosis using a combined assessment of symptoms,endoscopy and histology and the stratification of clinical phenotypes is important for treatment and prognosis the *** majority of patients respond favorably to antibiotic ***,management of chronic antibiotic-refractory pouchitis remains a challenge.

关键词： classification complication Ileal pouch Inflammatory bowel disease Restorative proctocolectomy

Near real-time gravitational wave data analysis of the massive black hole binary with TianQin

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Sc.ence china(Physics,Mechanics & Astronomy) 2024年第7期67卷 175-186页

作者： Hong-yu c.en Xiang-yu Lyu en-Kun Li Yi-Ming Hu MOE Key Laboratory of TianQin Mission TianQin Research Center for Gravitational Physics&School of Physics and AstronomyFrontiers Science Center for TianQinGravitational Wave Research Center of CNSASun Yat-sen University(Zhuhai Campus)Zhuhai 519082China

Space-borne gravitational wave(GW)detectors can detect the merger of massive black *** early warning and localization of GW events before merging can be used to inform electromagnetic telescopes and conduct multimessenger ***,this requires real-time data transmission and analysis *** geocentric orbit of the space-borne GW detector Tian Qin makes it possible to conduct real-time data *** this study,we develop a search and localization pipeline for massive black hole binaries(MBHBs)with Tian Qin under both regular and real-time data transmission *** demonstrate that,with real-time data transmission,MBHBs can be accurately localized on the *** the approaching merger,each analysis can be finished in only 40 *** an MBHB system at a distance of 1 Gpc,if we receive data every hour,then we can pinpoint its location to within less than 1 deg^(2)on the final day before the merger.

关键词： gravitational wave detectors and experiments black holes data analysis algorithms and implementation data management

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A unified model for ductile-to-brittle transition in body-centered cubic metals

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Journal of Materials Sc.ence & Technology 2023年第10期141卷 193-198页

作者： yu-Heng Zhang en Ma Jun Sun Wei-Zhong Han State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an 710049China

Ductile-to-brittle transition(DBT)is a well-known phenomenon in body-centered-cubic(Bcc)metals,in-termetallics and semiconductor materials.A quantitative prediction of the DBT temperature,however,has so far remained ***,we propose a unified model based on the efficacy of dislocation multi-plication as the controlling factor for DBT,with the dislocation source effic.ency governed by the relative mobility of screw versus edge *** model successfully predicts the DBT temperature of iron,molybdenum and tungsten,and also covers the influence of grain size,initial dislocation density,and the multiplicity of dislocation sources.A comparison with experiments indicates that the model captures the key DBT features,providing new insight into the toughness of Bcc metals.

关键词： Metals Ductile Brittle Dislocation Mobility

Effects of vertical electromagnetic stirring on grain refinement and macrosegregation control of bearing steel billet in continuous casting

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Journal of Iron and Steel Research International 2017年第5期24卷 483-489页

作者： yu Xu en-gang Wang Zhuang Li An-yuan Deng Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education) Northeastern University Shenyang 110819 Liaoning China School of Metallurgy Northeastern University Shenyang 110819 Liaoning China School of Materials Sc.ence and engineering Northeastern University Shenyang 110819 Liaoning China

The grain refinement and macrosegregation control of Gcrl5 bearing steel were investigated under a type of rarely-used electromagnetic stirring, vertical electromagnetic stirring （V-EMS）, in continuous casting. V-EMS can create an upward electromagnetic force and generate longitudinal loop convection, which ena- bles the better mixing of the upper part with the lower part of the liquid steel. The results showed that ap- plying V-EMS can enlarge the region of the equiaxed grain, decrease the secondary dendrite arm spacing （SDAS） and reduce the segregation of both carbon and sulfur. After applying V-EMS, liquid steel with a high solute concentration is brought to the dendrite tips, making the dendrite arms partially melt. The length of the dendrite fragment is approximately 1.8 mm, 10 to 12 times the SDAS. Upon increasing the amount of cooling water from 2.0 to 3.5 m3/h, the dendrite fragments exhibit an obvious aggregation fol- lowing V-EMS. Finally, a criterion for dendrite fragmentation under V-EMS was derived based on the dendrite fragmentation theory of campanella et al.

关键词： Vertical electromagnetic stirring Dendrite fragmentation Grain refinement continuous casting Bearing steel Macrosegregation control

Preparation of co/S co-doped carbon catalysts for excellent methylene blue degradation

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 169-181页

作者： Haixu Li Haobo He Tiannan Jiang yunfei Du Zhic.en Wu Liang Xu Xinjie Wang Xiaoguang Liu Wanhua yu Wendong Xue School of Materials Sc.ence and engineering University of Science and Technology BeijingBeijing 100083China Beijing Jinyu Tongda Refractory Technologies co. Ltd.Beijing 100085China

S and co co-doped carbon catalysts were prepared via pyrolysis of MOF-71 and thiourea mixtures at 800℃at a mass ratio of MOF-71 to thiourea of 1:0.1 to effectively activate peroxymonosulfate(PMS)for methylene blue(MB)*** effects of two different mixing routes were identified on the MB degradation ***,the catalyst obtained by the alcohol solvent evaporation(MOF-AEP)mixing route could degrade 95.60%MB(50 mg/L)within 4 min(degradation rate:K=0.78 min^(-1)),which was faster than that derived from the direct grinding method(MOF-DGP,80.97%,K=0.39 min^(-1)).X-ray photoelectron spectroscopy revealed that the co-S content of MOF-AEP(43.39at%)was less than that of MOF-DGP(54.73at%),and the proportion of c-S-c in MOF-AEP(13.56at%)was higher than that of MOF-DGP(10.67at%).Density functional theory calculations revealed that the adsorption energy of co for PMS was -2.94 eV when sulfur was doped as c-S-c on the carbon skeleton,which was higher than that when sulfur was doped next to cobalt in the form of co-S bond(-2.86 eV).Thus,the c-S-c sites might provide more contributions to activate PMS compared with ***,the degradation parameters,including pH and MOF-AEP dosage,were ***,radical quenching experiments and electron paramagnetic resonance(EPR)measurements revealed that ^(1)O_(2)might be the primary catalytic species,whereas·O~(2-)might be the secondary one in degrading MB.

关键词： advanced oxidation process alcohol solvent evaporation hydrogen bond S and co co-doped carbon catalysts wastewater remediation

Gut microbiota in cancer initiation,development and therapy

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Sc.ence china Life Sc.ences 2025年

作者： Ruyi Zhang Xiang Zhang Harry cheuk Hay Lau Jun yu Institute of Digestive Disease and Department of Medicine and Therapeutics State Key Laboratory of Digestive DiseaseLi Ka Shing Institute of Health SciencesCUHK Shenzhen Research InstituteThe Chinese University of Hong Kong

cancer has long been associated with genetic and environmental factors,but recent studies reveal the important role of gut microbiota in its initiation and *** 13%of cancers are linked to infectious agents,highlighting the need to identify the specific microorganisms *** microbiota can either promote or inhibit cancer growth by influencing oncogenic signaling pathways and altering immune *** can lead to cancer,while certain probiotics and their metabolites may help reestablish microecological balance and improve anti-tumor immune *** into targeted approaches that enhance therapy with probiotics is ***,the effects of probiotics in humans are complex and not yet fully ***,methods to counteract harmful bacteria are still in *** clinical trials also indicate that modifying gut microbiota may help manage side effects of cancer *** research is crucial to understand better how gut microbiota can be used to improve cancer prevention and treatment outcomes.

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