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Chinese Journal of Cancer Research 2011年第3期23卷 239-241页

作者： yi Xiao Jia Wei Jin-huan Xu Jian-feng Zhou yi-cheng Zhang Department of Hematology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China

One case of acute megakaryoblastic leukemia （AMKL） with trisomy 21,trisomy 14 and unmutated GATA1 gene in a phenotypically normal girl was *** patient experienced transient myelodysplasia before the onset of *** bone marrow blasts manifested typical morphology of megakaryoblast both by the May-Giemsa staining and under the electronic *** cells were positive for CD13,CD33,CD117,CD56,CD38,CD41 and CD61 in flow cytometry *** study showed karyotype of 48,XX,＋14,＋21 in 40% *** mutations of GATA1 gene in Down syndrome or acquired trisomy 21 were not detected in this case.

关键词： Acute megakaryoblastic leukemia Myelodysplasia Cytogenetics GATA1

重症医学科肺炎克雷伯菌耐药率变迁及中外数据库对比

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中国感染控制杂志 2024年第10期23卷 1241-1248页

作者：冯诚怿张丽伟王洋洋江淑芳狄佳樊金诺常州市第一人民医院感染管理处江苏常州213000 常州市第一人民医院微生物室江苏常州213000 常州市武进人民医院急诊内科江苏常州213000

目的对比常州市第一人民医院重症医学科(简称CZFPH-ICU)和美国重症监护医疗信息库第Ⅳ版(MIMIC-Ⅳ)中肺炎克雷伯菌(KP)检出情况和耐药率,以及CZFPH-ICU中KP耐药率、耐碳青霉烯类肺炎克雷伯菌(CRKP)检出率的变迁。方法回顾性分析2017-201... 详细信息

目的对比常州市第一人民医院重症医学科(简称CZFPH-ICU)和美国重症监护医疗信息库第Ⅳ版(MIMIC-Ⅳ)中肺炎克雷伯菌(KP)检出情况和耐药率,以及CZFPH-ICU中KP耐药率、耐碳青霉烯类肺炎克雷伯菌(CRKP)检出率的变迁。方法回顾性分析2017-2019年CZFPH-ICU与MIMIC-Ⅳ中检出KP的标本分布和耐药率差异,以及2017-2023年CZFPH-ICU KP标本分布、耐药率,不同标本来源的KP、CRKP检出率的变化趋势。结果2017-2019年CZFPH-ICU共检出KP 2434株,以痰标本为主;MIMIC-Ⅳ数据库中共检出KP 1137株,以尿标本为主。与MIMIC-Ⅳ相比,CZFPH-ICU中检出的KP对常用抗菌药物均呈现出更高的耐药率。2020-2023年CZFPH-ICU共检出KP 4874株,仍以痰标本为主,且痰、尿、引流液和胆汁标本中CRKP的检出分别从2017-2019年的17.77%、20.15%、24.22%、24.07%,下降至2020-2023年的12.99%、13.56%、13.63%、8.00%(均P<0.05)。2017-2023年CZFPH-ICU分离的KP对哌拉西林/他唑巴坦、亚胺培南、美罗培南等常用抗生素的耐药率变化趋势为2017-2019年呈现上升,2020-2022年出现下降,2023年略有回升。2023年CZFPH-ICU分离的KP对头孢他啶/阿维巴坦、多黏菌素B及替加环素的耐药率分别为21.28%、10.22%、7.03%。结论近7年CZFPH-ICU中KP耐药率存在缓慢下降趋势,但仍高于国外MIMIC-Ⅳ数据库中KP的耐药率。医院应加强各项感染防控措施,有效控制KP耐药和感染。

关键词：肺炎克雷伯菌 MIMIC-Ⅳ数据库重症医学科标本分布耐药率变迁

Coarse-fine joint target parameter estimation method based on AN-RSC in OFDM passive radar

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Journal of Systems Engineering and Electronics 2024年第2期35卷 339-349页

作者： WANG Chujun WAN Xianrong yi Jianxin cheng feng School of Electronic Information Wuhan UniversityWuhan 430072China

In this paper,we study the accuracy of delay-Doppler parameter estimation of targets in a passive radar using orthogonal frequency division multiplexing(OFDM)signal.A coarse-fine joint estimation method is proposed to achieve better estimation accuracy of target parameters without excessive computational ***,the modulation symbol domain(MSD)method is used to roughly estimate the delay and Doppler of ***,to obtain high-precision Doppler estimation,the atomic norm(AN)based on the multiple measurement vectors(MMV)model(MMV-AN)is used to manifest the signal sparsity in the continuous Doppler *** the same time,a reference signal compensation(RSC)method is presented to obtain highprecision delay *** results based on the OFDM signal show that the coarse-fine joint estimation method based on AN-RSC can obtain a more accurate estimation of target parameters compared with other *** addition,the proposed method also possesses computational advantages compared with the joint parameter estimation.

关键词： passive radar orthogonal frequency division multiplexing(OFDM)signal atomic norm(AN) parameter estimation

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119株摩根摩根菌临床分布及耐药性变迁

中华医院感染学杂志 2024年第5期34卷 663-667页

作者：张丽伟王玉月冯诚怿王伟伟狄佳江淑芳常州市第一人民医院感染管理处江苏常州213003 常州市第一人民医院医学检验科江苏常州213003

目的分析119株摩根摩根菌临床分布及耐药性变迁。方法通过实验室信息管理系统和杏林医院感染实时监测系统收集常州市第一人民医院2019年9月-2022年9月临床分离的119株摩根摩根菌的临床分布、标本来源、感染状态及部位、药敏结果与耐... 详细信息

目的分析119株摩根摩根菌临床分布及耐药性变迁。方法通过实验室信息管理系统和杏林医院感染实时监测系统收集常州市第一人民医院2019年9月-2022年9月临床分离的119株摩根摩根菌的临床分布、标本来源、感染状态及部位、药敏结果与耐药性变迁。结果 119株菌株主要分布在重症医学科、泌尿外科及肾内科;标本来源主要为尿液、脓液及痰液;其中医院感染22株、社区感染55株,医院感染部位以下呼吸道和菌血症为主,社区感染部位以泌尿道和皮肤软组织为主,二者分布完全不同(P<0.05);119株菌株中耐碳青霉烯类肠杆菌(CRE)比例占19.33%,多重耐药菌(MDRO)占31.93%;摩根摩根菌对青霉素类、喹诺酮类、头孢类等药物三年间耐药性比较,无统计学差异,但是对碳青霉烯类中亚胺培南三年间耐药性差异有统计学意义,且随年份增加而增加(P<0.05)。结论摩根摩根菌可引起多种感染,社区感染比例高于医院感染,医院感染仍以下呼吸道为主。阿米卡星等可作为临床治疗摩根菌感染的一线用药,耐碳青霉烯类的摩根菌检出率逐年升高,临床应根据药敏结果合理用药,并对其耐药性加强监测。

关键词：摩根摩根菌临床分布标本来源耐药性

Effect of FeSi additive in dual-chamber sample cup on thermal analysis characteristic values and vermiculating rate of compacted graphite iron

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China Foundry 2024年第1期21卷 91-100页

作者： De-quan Shi Ze-yu Liu Gui-li Gao yi-cheng feng School of Materials and Chemistry University of Shanghai for Science and TechnologyShanghai 200093China School of Materials Science and Chemical Engineering Harbin University of Science&TechnologyHarbin 150040China School of Mechanical and Energy Engineering Shanghai Technical Institute of Electronics and InformationShanghai 201411China

Thermal analysis plays a key role in the online inspection of molten iron *** solidification process of molten iron can be reflected by thermal analysis curves,and silicon is one of important elements affecting the solidification of molten *** this study,FeSi75 was added in one chamber of the dual-chamber sample cup,and the influences of FeSi75 additive on the characteristic values of thermal analysis curves and vermiculating rate were *** results show that with the increase of FeSi75,the start temperature of austenite formation TALfirstly decreases and then increases,but the start temperature of eutectic growth TSEF,the lowest eutectic temperature TEU,temperature at maximum eutectic reaction rate TEM,and highest eutectic temperature TERkeep always an *** temperature at final solidification point TEShas little *** FeSi75 additive has different influences on the vermiculating rate of molten iron with different vermiculation,and the vermiculating rate increases for lower vermiculation molten iron while decreases for higher *** to the thermal analysis curves obtained by a dual-chamber sample cup with 0.30wt.%FeSi75 additive in one chamber,the vermiculating rate of molten iron can be evaluated by comparing the characteristic values of these *** time differenceΔtERcorresponding to the highest eutectic temperature TERhas a closer relationship with the vermiculating rate,and a parabolic regression curve between the time differenceΔtERand vermiculating rateηhas been obtained within the range of 65%to 95%,which is suitable for the qualified melt.

关键词： FeSi75 additive characteristic value vermiculating rate thermal analysis compacted graphite iron

Microstructure,wear and friction behavior of CoCrAITaY-xCNTs composite coatings deposited by laser-induction hybrid cladding

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Rare Metals 2024年第4期43卷 1815-1827页

作者： Sheng-feng Zhou Yu Long Yan-Liang yi cheng Deng Lian-Xi Hu Institute of Advanced Wear&Corrosion Resistant and Functional Materials Jinan UniversityGuangzhou510632China Wuhan National Laboratory for Optoelectronics(WNLO) Huazhong University of Science and TechnologyWuhan430074China MOE Key Laboratory of New Processing Technology for Non-Ferrous Metals and Materials Guangxi Key Laboratory of Processing for Non-Ferrous Metals and Featured MaterialsGuangxi UniversityNanning530004China School of Mechatronics Engineering Guangdong Polytechnic Normal UniversityGuangzhou510635China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin150001China

To improve the wear performance of CoCrAlYTa coating,part of the carbon nanotubes(CNTs)chemically reacted with Ta to form reinforcement phase(TaC),while the other CNTs were retained as lubrication ***,the CoCrAlYTa-xCNTs(x=0,1,2,and 4;wt%)composite coatings were prepared by laserinduction hybrid cladding(LIHC),and the microstructure and wear resistance of coatings were systematically *** show that the coatings are mainly composed of TaC,y-(Co,Cr)andβ-(Co,Cr)*** the CNTs content increases from 0 wt%to 4 wt%,the volume fraction of TaC increases from 13.11 vol%to 16.12 vol%.Meanwhile,the nano-hardness ofγ-(Co,Cr)andβ-(Co,Cr)Al are improved from 7.49 and 9.72 to 9.36 and 11.19 GPa,*** a result,the microhardness of coating increases from HV536.25 to HV 738.16,the wear rate decreases from32.4×10^(-3)to 6.1×10^(-3)mg·m^(-1),and the average friction coefficient decreases from 0.55 to *** good wear performance of the coating is attributed to the formation of TaC and the existence of remained CNTs lubricant film.

关键词： Carbon nanotube MCrAlY coating Friction and wear performance Laser-induction hybrid cladding

Leflunomide: A versatile additive for defect reduction, enhanced optoelectronic properties and environmental stability of perovskite films

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Nano Research 2024年第4期17卷 2628-2637页

作者： Dingyue Sun Ming Peng Taijin Wang Longju yi Shizuo Zhang feng Liu Gary J.cheng The Institute of Technological Sciences Wuhan UniversityWuhan 430072China School of Power and Mechanical Engineering Wuhan UniversityWuhan 430072China School of Industrial Engineering Purdue UniversityWest LafayetteIN 47906USA

The development of perovskite photoelectric devices with excellent performance is largely dependent on the defects in the perovskite *** address this issue,a specific drug,leflunomide(LF,C_(12)H_(9)F_(3)N_(2)O_(2)),was incorporated into the perovskite to reduce defects and improve its photoelectric *** is believed that the C=O bond on LF molecule can interact with the uncoordinated Pb2+of the perovskite,thereby reducing non-radiative *** novel approach of incorporating LF into perovskite films has the potential to revolutionize the development of high-performance perovskite photoelectric *** trifluoromethyl functional(–CF_(3))group on LF can form a protective layer on the surface of the perovskite film,shielding it from water ***,LF can be utilized to alter the nucleation position of perovskite,thus minimizing the number of defects and optimizing the film ***,the LF-doped perovskite film displays low trap density and high photoelectric *** LF-doped perovskite film showed a trap density of 8.28×10^(11),which is notably lower than the 2.04×10^(12) of the perovskite film without *** responsivity and detectivity of the LF-doped perovskite photodetector were 0.771 A/W and 2.81×10^(11) Jones,respectively,which are much higher than the 0.23 A/W and 1.06×10^(10) Jones of the LF-undoped perovskite ***,the LF-doped photodetector maintained an initial photocurrent of 86%after 30 days of storage in air,indicating drastically increased environmental *** strongly suggests that LF is an effective additive for perovskites utilized in optoelectronic devices with high performance.

关键词： leflunomide additive engineering defect passivation perovskite

Quantum phase transition of the Jaynes-Cummings model

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Science China(Physics,Mechanics & Astronomy) 2024年第1期67卷 1-9页

作者： cheng Liu Jin-feng Huang Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education Key Laboratory for Matter Microstructure and Function of Hunan ProvinceDepartment of Physics and Synergetic Innovation Center for Quantum Effects and ApplicationsInstitute of Interdisciplinary StudiesHunan Normal UniversityChangsha 410081China

Herein,we propose an experimentally feasible scheme to show the quantum phase transition of the Jaynes-Cummings(JC)model by modulating the transition frequency of a two-level system in a quantum Rabi model with strong *** tuning the modulation frequency and amplitude,the ratio of the effective coupling strength of the rotating terms to the effective cavity(atomic transition)frequency can enter the deep-strong coupling regime,while the counter-rotating terms can be ***,a deep-strong JC model is *** ratio of the coupling strength to resonance frequencies in the deep-strong JC model is two orders of magnitude larger than the corresponding ratio in the original quantum Rabi *** scheme can be employed in atom-cavity resonance and off-resonance cases,and it is valid over a broad *** nonzero average cavity photons of the ground state indicate the emergence of a quantum phase ***,we demonstrate the dependence of the phase diagram on the atom-cavity detuning and modulation *** the parameters used in our scheme are within the reach of current experimental *** scheme provides a new mechanism for investigating the critical phenomena of finite-sized systems without requiring classical field limits,thereby opening a door for studying fundamental quantum phenomena occurring in the ultrastrong and even deep-strong coupling regimes.

关键词： Jaynes-Cummings model quantum phase transition frequency modulation

Precipitation evolution and properties of Cu-15Ni-8Sn alloys via Al microalloying during ageing

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Rare Metals 2024年第10期43卷 5216-5228页

作者： Wei Luo Li-Jun Peng Xu-Jun Mi Hao-feng Xie yi-cheng Cao Shu-Hui Huang State Key Laboratory of Nonferrous Metals and Processes GRINM Group Co.Ltd. GRIMAT Engineering Institute Co. Ltd. General Research Institute for Nonferrous Metals School of Materials Science and Engineering South China University of Technology

Studies have shown that microalloying Cu-Ni-Sn alloys using Al inhibits discontinuous precipitation reactions;however,the mechanism has not been investigated ***,this study explored the properties and precipitation evolution of Cu-15Ni-8Sn alloys without and with 1 wt%Al（Cu-15Ni-8Sn-1Al） during ageing at 500℃ through X-ray diffraction （XRD）,scanning electron microscopy and high-angle annular dark-field scanning transmission electron *** results revealed that in Cu-15Ni-8Sn alloy,DO22ordering first occurred after spinodal decomposition,subsequently transitioning to an L12ordering phase,during which the discontinuous precipitates gradually nucleated at the grain boundaries and formed *** alloy hardness increased sharply with ordering and then decreased rapidly after reaching its peak value,due to the dominance of the discontinuous precipitation ***,the DO22ordered phase did not appear during the ageing of Cu-15Ni-8Sn-1Al alloy,and a Ni3(Alx,Sn1-x) intermetallic compound with L12structure was formed,consuming Ni and Sn atoms,thereby significantly suppressing the discontinuous precipitation reaction and improving the stability during prolonged *** tensile strength （yield strength） of Cu-15Ni-8Sn and Cu-15Ni-8Sn-1Al alloys at peak hardness were 855 （755） and 936 MPa （892 MPa）,respectively,and their main strengthening mechanisms were solid solution strengthening and precipitation *** addition of 1 wt% Al effectively improved the precipitation strengthening effect of Cu-Ni-Sn alloys but severely decreased the ductility.

关键词： Al addition Cu-15Ni-8Sn Precipitation sequence Strengthening mechanism

Multiscale observation in wide-spatial radar surveillance based on coherent FDA design

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Science China(Information Sciences) 2024年第2期67卷 232-252页

作者： Lei YU feng HE yi SU College of Electronics Science National University of Defense Technology

Wide-spatial radar surveillance missions are challenging tasks, requiring an increased power budget and agility in transmission aimed at extracting information from multiple targets in different environments. These requirements necessitate high transmitting degrees of freedom(DOF) to achieve the objective of multiscale observation for specific tasks in specialized regions of interest. Herein, we exploit the multiscale observation ability in wide-spatial radar surveillance based on frequency diverse array(FDA)radar. The proposed method facilitates spatial anisotropic control of multiple radar resources, including the transmitting waveforms, beampattern, and bandwidth. By utilizing a coherent FDA radar, we offer principles for the selection of baseband waveforms, in addition to the quantitative design of the beampattern gain and optimal bandwidth from the perspective of detection. The feasibility of the proposed method is validated through numerical experiments, thus indicating the potential in wide-spatial radar surveillance. Moreover,this work can be regarded as a preliminary attempt to gauge the efficacy of the computational array, a novel academic concept.

关键词： multi-scale observation wide-spatial surveillance frequency diverse array (FDA) beampattern synthesis frequency diversity gain computational array