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Finite Groups Whose Character Graphs Associated with Codegrees Have No Triangles

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Algebra Colloquium 2016年第1期23卷 15-22页

作者： huan xiong Institut fur Mathematik Universitat Zurich Winterthurerstrasse 190 CH-8057 Zurich Switzerland

Motivated by Problem 164 proposed by Y. Berkovich and E. Zhmud＇ in their book ＂Characters of Finite Groups＂, we give a characterization of finite groups whose irreducible character codegrees are prime powers. This is based on a new kind of character graphs of finite groups associated with codegrees. Such graphs have close and obvious connections with character codegree graphs. For example, they have the same number of connected components. By analogy with the work of finite groups whose character graphs （associated with degrees） have no triangles, we conduct a result of classifying finite groups whose character graphs associated with codegrees have no triangles in the latter part of this paper.

关键词： finite group character graph codegree

On the polynomiality and asymptotics of moments of sizes for random(n,dn ± 1)-core partitions with distinct parts

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Science China Mathematics 2021年第4期64卷 869-886页

作者： huan xiong Wenston J.T.Zang Institut de Recherche Mathematique Avancee Universite de Strasbourg et CNRSStrasbourg 67000France Institute of Advanced Study of Mathematics Harbin Institute of TechnologyHarbin 150001China

Amdeberhan’s conjectures on the enumeration,the average size,and the largest size of(n,n+1)-core partitions with distinct parts have motivated many research on this ***,Straub(2016)and Nath and Sellers(2017)obtained formulas for the numbers of(n,dn-1)-and(n,dn+1)-core partitions with distinct parts,*** X_(s,t) be the size of a uniform random(s,t)-core partition with distinct parts when s and t are coprime to each *** explicit formulas for the k-th moments E[X_(n,n+1)^(k)]and E[X_(2 n+1,2 n+3)^(k)]were given by Zaleski and Zeilberger(2017)when k is ***(2017)also studied the expectation and higher moments of X_(n,dn-1) and conjectured some polynomiality properties concerning them in ar Xiv:*** by the above works,we derive several polynomiality results and asymptotic formulas for the k-th moments of X_(n,dn+1) and X_(n,dn-1) in this paper,by studying theβ-sets of core *** particular,we show that these k-th moments are asymptotically some polynomials of n with degrees at most 2 k,when d is given and n tends to ***,when d=1,we derive that the k-th moment E[X_(n,n+1)^(k)]of X_(n,n+1) is asymptotically equal to(n^(2)/10)^(k)when n tends to *** explicit formulas for the expectations E[X_(n,dn+1)]and E[X_(n,dn-1)]are also ***(n,dn-1)-core case in our results proves several conjectures of Zaleski(2017)on the polynomiality of the expectation and higher moments of X_(n,dn-1).

关键词： partition hook length core partition average size distinct part

A brief review of thermal transport in mesoscopic systems from nonequilibrium Green’s function approach

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Frontiers of physics 2021年第4期16卷 91-108页

作者： Zhi-Zhou Yu Guo-huan xiong Li-Fa Zhang NNU-SULI Thermal Energy Research Center(NSTER)&Center for Quantum Transport and Thermal Energy

With the rapidly increasing integration density and power density in nanoscale electronic devices,the thermal management concerning heat generation and energy harvesting becomes quite *** phonon is the major heat carrier in semiconductors,thermal transport due to phonons in mesoscopic systems has attracted much *** quantum transport studies,the nonequilibrium Green’s function(NEGF)method is a versatile and powerful tool that has been developed for several *** this review,we will discuss theoretical investigations of thermal transport using the NEGF approach from two *** the aspect of phonon transport,the phonon NEGF method is briefly introduced and its applications on thermal transport in mesoscopic systems including one-dimensional atomic chains,multi-terminal systems,and transient phonon transport are *** the aspect of thermoelectric transport,the caloritronic effects in which the charge,spin,and valley degrees of freedom are manipulated by the temperature gradient are *** time-dependent thermoelectric behavior is also presented in the transient regime within the partitioned scheme based on the NEGF method.

关键词： thermal transport nonequilibrium Green’s function

Fluorescent Silk Obtained by Feeding Silkworms with Fluorescent Materials

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Chinese Journal of Chemistry 2023年第16期41卷 2035-2046页

作者： Zhao-Fan Wu Zhao-Nan Sun huan-Ming xiong Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan UniversityShanghai 200438China

Comprehensive Summary Fluorescent silk has potential application in many fields such as bioimaging,tissue engineering scaffolds,luminescent marks,and dazzling *** the methods to endow natural silk with fluorescent properties,feeding silkworms with fluorescent additives is facile,low-cost and environment friendly,which has the prospect of large-scale *** this paper,we reviewed the research progress for this aim in the past ten years,and summarized the unified characteristics for the substances that can enter the silk gland by digestive tract of *** advantages and disadvantages of various fluorescent materials for this application are compared in *** the future research directions are suggested to overcome the shortcomings of the present research.

关键词： Fluorescent silk Fluorescent materials Feeding silkworms Carbon dots Nanoparticles Nanotechnology Multi-color emission Bioimaging

Effects of assembly errors and bonding defects on the centroid drift of a precision sleeve structure

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Advances in Manufacturing 2021年第4期9卷 509-519页

作者： Jian-Hua Liu Xia-Yu Li huan-xiong Xia Lei Guo School of Mechanical Engineering Beijing Institute of TechnologyBeijing 100081People’s Republic of China

Adhesive joints are widely used in precision electromechanical products,and their bonding process has significant effects on the performance of an assembled *** paper presents a numerical study on the bonding assembly of a sleeve structure of a precision inertial device using a finite element method,where the stresses due to curing and relaxation behaviors are *** effects of assembly errors and bonding defects on the centroid drift of the sleeve structure were found and analyzed *** study can help understand the zero-drift mechanism of the precision inertial device and contribute valuable data for its error compensation.

关键词： Bonding process Adhesive joint Precision assembly Centroid drift

Effects of estrogen on CD4^+ CD25^+ regulatory T cell in peripheral blood during pregnancy

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Asian Pacific Journal of Tropical Medicine 2013年第9期6卷 748-752页

作者： Yuan-huan xiong Zhen Yuan Li He School of Basic Medical Sciences Wuhan.University Obstetrics and Gynecology Department People's Hospital of Jiangxi Province Medical College of Nanchang University School of Basic Medical Sciences Wuhan University

Objective To investigate the effects of estrogen(E_2)level on regulatory T cells(Treg)in peripheral blood during ***:A total of 30 healthy non-pregnant women were selected as control group,90 pregnant women of early,middle and late pregnancy and 30 postpartum women at 1 month after parturition were selected as experimental groups including early pregnancy group,middle pregnancy group and late pregnancy group;the proportions of CD4^+CD25^+Treg and CD4^+CD25^+CD127^-Treg among CD4 T cells were detected by flow cytometry;the serum estrogen content in peripheral blood was detected by electrochemical immune luminescence ***:E_2 level was coincident with the change of Tregs number during *** estrogen content in peripheral blood increased gradually from early pregnancy to late pregnancy,then decreased significantly after parturition,and the level at 1 month after parturition down to the level in non-pregnancy group(P>0.05);the level of E_2 in pregnancy groups were significantly higher than those in non-pregnancy group(P0.05):the proportions in middle and late pregnancy groups were significantly higher than those in early pregnancy group(P0.05).There was correlation between Tregs number with estrogen level during *** proportion of CD4^+CD25^+Treg and CD4^+CD25^+CD 127^-Treg were positively correlated with estrogen ***:High proportion of CD4^+CD25^+Trcg and

关键词： Estrogen CD4^+CD25^+regulatory T cell CD4^+ CD25^+ CD 127^-regulatory T cell Pregnancy Immuno-modulation

Fluorescent carbon dots synthesized in solid phase and air for application in LEDs

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Nano Research 2024年第9期17卷 8495-8503页

作者： Wei-Jie Zheng Zhao-Nan Sun Yi-Ming Wang huan-Ming xiong Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan UniversityShanghai 200438China

Carbon dots(CDs)have been widely adopted as optical materials because of their excellent luminescent ***,most of the reported synthetic methods are conducted in solvents,especially hydrothermal/solvothermal reactions,leading to intractable problems such as toxic and flammable solvents,complex and inseparable by-products,and dangerously high pressures and ***-phase synthesis of CDs in air is an effective solution to overcome the above issues,but solid reactions always result in uncontrolled growth and agglomeration of *** this study,some inorganic salts are selected as catalysts for synthesizing CDs in solid states and air,which also play as dispersants to hinder CDs *** the meantime,some aromatic derivatives containing hydroxyl and amino groups are chosen as carbon sources,ground with the optimized catalyst,and then heated together in *** production yields are affected by the reaction time and reactant ratio,while the graphitization degrees of the CDs are determined by the reaction *** IG/ID value of their Raman spectra increases from 0.59 to 0.85,and the particle size decreases from 2.5 to 1.4 nm when the synthesis temperature is increased from 200 to 280℃.The as-prepared CDs show emission peaks ranging from 366 to 606 nm,with the photoluminescence(PL)quantum yield up to 53%.Their emission color variation mainly results from different carbon sources,which can be ascribed to the differences in the element composition,functional groups,and graphitic nitrogen content of these *** dispersing CDs of different concentrations into polyvinyl alcohol(PVA)and combining them with blue LEDs,cold,standard,and warm white light emitting devices(WLEDs)are prepared,with a color rendering index(CRI)up to *** the as-prepared CDs have antioxidant ability at high temperature,the as-prepared WLEDs have long lifespans,remaining the effective white luminescence after 72 h continuous work.

关键词： carbon dot solid-phase synthesis white LED photoluminescence inorganic salt catalysis

Rethinking Polyp Segmentation from An Out-ofdistribution Perspective

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Machine Intelligence Research 2024年第4期21卷 631-639页

作者： Ge-Peng Ji Jing Zhang Dylan Campbell huan xiong Nick Barnes Australian National University Canberra 8105Australia Mohamed bin Zayed University of Artificial Intelligence Abu Dhabi 999041UAE

Unlike existing fully-supervised approaches,we rethink colorectal polyp segmentation from an out-of-distribution perspective with a simple but effective self-supervised learning *** leverage the ability of masked autoencoders-self-supervised vision transformers trained on a reconstruction task-to learn in-distribution representations,here,the distribution of healthy colon *** then perform out-of-distribution reconstruction and inference,with feature space standardisation to align the latent distribution of the diverse abnormal samples with the statistics of the healthy *** generate per-pixel anomaly scores for each image by calculating the difference between the input and reconstructed images and use this signal for out-of-distribution(i.e.,polyp)*** results on six benchmarks show that our model has excellent segmentation performance and generalises across *** code is publicly available at https://***/GewelsJI/Polyp-OOD.

关键词： Polyp segmentation anomaly segmentation out-of-distribution segmentation masked autoencoder abdomen.

Efficacy and safety of different anti-osteoporotic drugs for the spinal fusion surgery: A network meta-analysis

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World Journal of Clinical Cases 2023年第30期11卷 7350-7362页

作者： Xiao-Yuan He huan-xiong Chen Zhi-Rong Zhao Spinal Surgery Hainan Province Clinical Medical CenterHaikou 570100Hainan ProvinceChina

BACKGROUND Administering anti-osteoporotic agents to patients perioperatively is a widely accepted approach for improving bone fusion rates and reducing the risk of *** best anti-osteoporotic agents for spinal fusion surgery remain *** To investigate the efficacy and safety of different anti-osteoporotic agents in spinal fusion surgery via network *** Searches were conducted in four electronic databases(PubMed,EMBASE),Web of Science,the Cochrane Library and China National Knowledge Infrastructure(CNKI)from inception to November *** studies that compared antiosteoporotic agents vs placebo for spinal fusion surgery were included in this network *** included fusion rate,Oswestry disability index(ODI),and adverse *** meta-analysis was performed by R software with the gemtc *** In total,13 randomized controlled trials were included in this network *** teriparatide(OR 3.2,95%CI:1.4 to 7.8)was more effective than placebo in increasing the fusion *** surface under the cumulative ranking curve(SUCRA)of teriparatide combined with denosumab was the highest(SUCRA,90.9%),followed by teriparatide(SUCRA,74.0%),zoledronic acid(SUCRA,43.7%),alendronate(SUCRA,41.1%)and risedronate(SUCRA,35.0%).Teriparatide(MD-15,95%CI:-28 to-2.7)and teriparatide combined with denosumab(MD-20,95%CI:-40 to-0.43)were more effective than placebo in decreasing the *** SUCRA of teriparatide combined with denosumab was highest(SUCRA,90.8%),followed by teriparatide(SUCRA,74.5%),alendronate(SURCA,52.7),risedronate(SURCA,52.1%),zoledronic acid(SURCA,24.2%)and placebo(SURCA,5.6%)for *** adverse events were not different between *** This network meta-analysis suggests that teriparatide combined with denosumab and teriparatide alone significantly increase the fusion rate and decrease the ODI without increasing adverse *** on current evidence,teriparatide combined with denosumab

关键词： Anti-osteoporotic agents Spinal fusion procedure Network meta-analysis Systematic review Denosumab