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| 1 | Research progresses on Cherenkov and transit-time high-power microwave sources at NUDT显示文摘Research progresses on Cherenkov and transit-time high-power microwave(HPM)sources in National University of Defense Technology(NUDT)of China are presented.The research issues are focused on the following aspects.The pulse-shortening phenomenon in O-type Cerenkov HPM devices is suppressed.The compact coaxial relativistic backward-wave oscillators(RBWOs)at low bands are developed.The power efficiency in M-Type HPM tubes without guiding magnetic field increased.The power capacities and power efficiencies in the triaxial klystron amplifier(TKA)and relativistic transit-time oscillator(TTO)at higher frequencies increased.In experiments,some exciting results were obtained.The X-band source generated 2 GW microwave power with a pulse duration of 110 ns in 30 Hz repetition mode.Both L-and P-band compact RBWOs generated over 2 GW microwave power with a power efficiency of over 30%.There is approximately a 75% decline of the volume compared with that of conventional RBWO under the same power capacity conditions.A 1.755 GHz MILO produced 3.1 GW microwave power with power efficiency of 10.4%.A 9.37 GHz TKA produced the 240 MW microwave power with the gain of 34 dB.A 14.3 GHz TTO produced 1 GW microwave power with power efficiency of 20%. | Jiande Zhang Xingjun Ge Jun Zhang Juntao He Yuwei Fan Zhiqiang Li Zhenxing Jin Liang Gao Junpu Ling Zumin Qi | 2016 | Matter and Radiation at Extremes2016，1，3： | 7 |
| 2 | Oxidation of amorphous alloys显示文摘Owing to their unique short-or medium-range ordered microstructures and excellent mechanical, physical, and chemical properties, amorphous alloys have attracted significant interest in recent years. For the application of amorphous alloys, clarifying their oxidation processes and mechanisms is necessary since many of the surface-related properties of amorphous alloys largely depend on the surface oxide layer.The aim of this paper is to review the recent research on the thermal oxidation behaviors of amorphous alloys under pure oxygen or air condition. The contents are divided into three categories according to the number of components the research considers, i.e., the oxidation of binary, ternary, and multi-component(>3) amorphous alloys. Each section discusses the thermal stability of the amorphous matrix, oxidation kinetics, and the oxide layer and amorphous substrate, which are strongly affected by internal factors(i.e., alloy elements and microstructure) and external factors(i.e., oxidation temperature, duration, and oxygen partial pressure, etc.). The general features of the oxidation of amorphous alloys – from simple binary to complex multi-component amorphous alloys – will be summarized. This overview of the current scientific understanding on the fundamentals of these materials may provide guidelines for the development of strongly corrosion-resistant amorphous alloys. | Zhiqiang Xu Yifei Xu An Zhang Jiangyong Wang Zumin Wang | 2018 | Journal of Materials Science & Technology2018，34，11： | 3 |
| 3 | Stable confinement of Fe/Fe_(3)C in Fe,N-codoped carbon nanotube towards robust zinc-air batteries显示文摘Catalytic oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)have garnered great attention as the key character in metal-air batteries.Herein,we developed a superior nonprecious bifunctional oxygen electrocatalyst,fabricated through spatial confinement of Fe/Fe_(3)C nanocrystals in pyridinic N and Fe-Nx rich carbon nanotubes(Fe/Fe_(3)C-N-CNTs).During ORR,the resultant electrocatalyst exhibits positive onset pote ntial of 1.0 V(vs.RHE),large half-wave potentials of 0.88 V(vs.RHE),which is more positive than Pt/C(0.98 V and 0.83 V,respectively).Remarkably,Fe/Fe_(3)C-N-CNTs exhibits outstanding durability and great methanol tolerance,exceeding Pt/C and most reported nonprecious metal-based oxygen reduction electrocatalysts.Moreover,Fe/Fe_(3)C-N-CNTs show a markedly low potential at j=10 mA/cm^(2),small Tafel slopes and extremely high stability for OER.Impressively,the Fe/Fe_(3)C-N-CNTs-based Zn-air batteries demonstrate high power density of 183 mW/cm^(2)and robust charge/discharge stability.It is revealed that the spatial confinement effect can impede the aggregation and corrosion of Fe/Fe_(3)C nanocrystals.Meanwhile,Fe/Fe_(3)C and Fe-Nx play synergistic effect on boosting the ORR/OER activity,which provides an important guideline for construction of inexpensive nonprecious metal-carbon hybrid nanomaterials. | Lingbo Zong Xin Chen Shuming Dou Kaicai Fan Zumin Wang Wenjun Zhang Yunmei Du Jie Xu Xiaofei Jia Qi Zhang Xia Li Yida Deng Yanan Chen Lei Wang | 2021 | Chinese Chemical Letters2021，32，3： | 2 |
| 4 | circStrn3 is involved in bone cancer pain regulation in a rat model显示文摘Bone cancer pain(BCP)is a common chronic pain that is caused by a primary or metastatic bone tumor,More detailed molecular mechanisms of BCP are warranted.In this study,we established a BCP rat model.The von Frey hair test,body weight,and hematoxylin and eosin staining were employed.We screened differentilly expressed circRNAs(DECs)between the BCP group and sham group.The results revealed that 850 DECs were significantly up-regulated and 644 DECs were significantly down-regulated in the BCP group.Furthermore,we identified 1177 diffrentially expressed genes(DEGs)significantly up-regulated and 565 DEGs significantly down-regulated in the BCP group.Gene Ontology annotation of all 1742 DEGs revealed that biological regulation of metabolic processes,cellular processes,and binding were the top enriched terrms.For Kyoto Ency-clopedia of Genes and Genomes analysis,phagosome,HTLV-I infection,proteoglycans in cancer,and herpes simplex infection were significantly enriched in this study.In addition,we identified four selected circRNAs,chr6:72418120|72430205.chr20:756105717573740,chr18:69943105|69944476,and chr5:167516581|167558250,by quantitative real time PCR.chr6:72418120|72430205(circStrn3)was selected for further study based on expression level and the circRNA--miRNA--mRNA network table.Western blot analysis suggested that knockdown of circStrn3 could effectively induce Walker 256 cell apoptosis.In summary,our study provided a more in-depth understanding of the molecular mechanisms of BCP. | Yiwen Zhang Xiaoxia Zhang Zumin Xing Shuyi Tang Hanwen Chen Zhongqi Zhang Jiyuan Li Yalan Li | 2020 | Acta Biochimica et Biophysica Sinica2020，52，5： | 2 |
| 5 | Prevalence of chronic kidney disease in China显示文摘 | Zumin Shi Ping Zhou Chun Zhang | 2012 | The Lancet2012，，9838： | 1 |
| 6 | An improved small signal theory of the tri-axial klystron amplifier in the dispersion relation and beam coupling coefficient显示文摘 | Qi Zumin Zhang Jun Zhong Huihuang | 2012 | IEEE Trans on Plasma Sci2012，411，1： | 1 |
| 7 | Anchoring nitrogen-doped Co_(2)P nanoflakes on NiCo_(2)O_(4)nanorod arrays over nickel foam as high-performance 3D electrode for alkaline hydrogen evolution显示文摘Effective and robust electrocatalysts are mainly based on innovative materials and unique structures.Herein,we designed a flakelike cobalt phosphide-based catalyst supporting on NiCo_(2)O_(4)nanorods array,which in-situ grew on the nickel foam(NF)current collector,referring as NCo_(2)P/NiCo_(2)O_(4)/NF electrode.By optimizing the microstructure and electronic structure through 3D hierarchy fabrication and nitrogen doping,the catalyst features with abundant electrochemical surface area,favorable surface wettability,excellent electron transport,as well as tailored d band center.Consequently,the as-prepared N-Co_(2)P/NiCo_(2)O_(4)/NF electrode exhibits an impressive HER activity with a low overpotentials of58 mV at 10 mA cm^(-2),a Tafel slop of 75 mV dec^(-1),as well as superior durability in alkaline medium.This work may provide a new pathway to effectively improve the hydrogen evolution performance of transition metal phosphides and to develop promising electrodes for practical electrocatalysis. | Xiaohao Ji Xiaoyu Chen Lijuan Zhang Cheng Meng Yilei He Xing Zhang Zumin Wang Ranbo Yu | 2023 | Green Energy & Environment2023，8，2： | 1 |
| 8 | Restoration of Eutrophic Water Using Nymphaea tetragona Georgi显示文摘[Objective]The study aimed to explore the approaches of utilizing Nymphaea tetragona Georgi by doing research on removing nitrogen and phosphorus from sewage using N.tetragona Georgi.[Method]With N.tetragona Georgi as the research object,a comparative analysis on the content of total nitrogen(TN) and total phosphorus(TP) was carried out after N.tetragona Georgi was planted in sewage.TN content was determined by alkaline potassium persulfate digestion-UV spectrophotometric method(GB11894-89),and TP content was measured by using ammonium molybdate spectrophotometric method(GB11893-89).[Result]The removal rate of TN and TP reached 12.31% and 8.64% respectively under natural conditions after N.tetragona Georgi was cultivate in the sewage for 13 days.Afterward,the removal rate has no significant change.[Conclusion]N.tetragona Georgi can purify sewage to some degree,and the removal efficiency of TN was higher than that of TP. | Xianxiang Dai Dongli Duan Shuangyan Wang Zumin Zhang Zhouping Yang Hua Zhen | 2013 | Meteorological and Environmental Research2013，4，1： | 1 |
| 9 | SERPINA 3 K induces apoptosis in human colorectal cancer cells via activating the F as/ F as L /caspase‐8 signaling pathway显示文摘 | Yachao Yao Lei Li Xuan Huang Xiaoqiong Gu Zumin Xu Yang Zhang Lijun Huang Shuai Li Zhiyu Dai Cen Li Ti Zhou Weibin Cai Zhonghan Yang Guoquan Gao Xia Yang | 2013 | FEBS J2013，，14： | 1 |
| 10 | Preliminary Study on Heavy Metal Pollution Status of Farmland Soil at Two Sides of Cheng-Guan Expressway显示文摘The heavy metal content of the farmland soil at two sides of Cheng-Guan Expressway is measured to make a preliminary evaluation on its heavy metal pollution status.After digestion and volume fixation of the soil samples collected,measure the Cu,Zn,Cd,Pb and Cr content with atomic absorption spectrophotometry and evaluate the measured data according to Level Two of National Soil Environmental Quality Standard to obtain the contamination status.Cu,Zn and Cd content of the farmland soil for sections of Cheng-Guan Expressway goes beyond Level Two of National Soil Environmental Quality Standard,while the Pb and Cr content meets Level Two of National Soil Environmental Quality Standard.Pb and Cr content of the farmland soil at two sides of Cheng-Guan Expressway is in safe state,while the Cu,Zn and Cd content is in a mild contamination state.Cu,Zn and Cd are the main pollution elements. | Dongli DUAN Shuangyan WANG Zumin ZHANG Zhouping YANG Hua ZHEN | 2013 | Asian Agricultural Research2013，5，8： | 0 |
| 11 | Constructing BaTiO_(3)/TiO_(2)@polypyrrole composites with hollow multishelled structure for enhanced electromagnetic wave absorbing properties显示文摘BaTiO_(3)/TiO_(2)@polypyrrole(PPy)composites with hollow multishelled structure(HoMS)were constructed to enhance the electromagnetic wave absorbing properties of BaTiO_(3)-based absorbing material.BaTiO_(3)/TiO_(2)HoMSs were prepared by hydrothermal crystallization using TiO_(2)Ho MSs as template.Then,FeCl3 was introduced to initiate the oxidative polymerization of pyrrole monomer,forming BaTiO_(3)/TiO_(2)@PPy HoMSs successfully.The electromagnetic wave absorbing properties of BaTiO_(3)/TiO_(2)HoMSs and BaTiO_(3)/TiO_(2)@PPy Ho MSs with different shell number were investigated using a vector network analyzer.The results indicate that BaTiO_(3)/TiO_(2)@PPy HoMSs exhibit improved microwave absorption compared with BaTiO_(3)/TiO_(2)HoMSs.In particular,tripled-shelled BaTiO_(3)/TiO_(2)@PPy HoMS has the most excellent absorbing performance.The best reflection loss can reach up to-21.80 dB at 13.34 GHz with a corresponding absorber thickness of only 1.3 mm,and the qualified absorption bandwidth of tripled-shelled BaTiO_(3)/TiO_(2)@PPy HoMS is up to 4.2 GHz.This work paves a new way for the development of high-performance composite microwave absorbing materials. | Dan Mao Zhen Zhang Mei Yang Zumin Wang Ranbo Yu Dan Wang | 2023 | International Journal of Minerals,Metallurgy and Materials2023，30，3： | 0 |
| 12 | A comparison study of prevalence,awareness,treatment and control rates of hypertension and associated factors among adults in China and the United States based on national survey data显示文摘Objective:This study compared the prevalence,awareness,treatment and control of hypertension and associated factors in China and the United States(US).Methods:Adult data from nationally representative samples were derived from the Chronic Disease and Risk Factors Surveillance in 2010 and 2013 in China and the National Health and Nutrition Examination Survey in 2010 and 2013 in the US.Multivariable logistic and Poisson regression analysis were conducted to assess associations of the four outcomes with body weight status and behavioral factors.Results:Age-standardized prevalence rates of hypertension was 35.7%(95%confidence interval[CI]:35.4%to 36.1%)in 2010 and 29.8%(95%CI:29.4%to 30.2%)in 2013 in China,and 35.3%(95%CI:33.6%to 37.1%)in 2010 and 37.9%(95%CI:36.0%to 39.7%)in 2013 in the US.Among hypertensive participants,the age-standardized rates of treatment were 18.4%(95%CI:17.9%to 1&9%)in 2010 and 23.8%(95%CI:23.1%to 24.6%)in 2013 in China and 54.5%(95%CI:50.3%to 5&7%)in 2010 and 50.9%(95%CI:46.5%to 55.3%)in 2013 in the US;the age-standardized hypertension control rates were 3.2%(95%CI:3.0%to 3.5%)and 5.7%(95%CI:5.3%to 6.0%)in 2010 and 2013 in China and 50.6%(95%CI:46.2%to 55.0%)and 55.3%(95%CI:50.3%to 60.3%)in the US.Obesity was significantly associated with prevalence,awareness and control rates in both countries.Different from the US,obesity was negatively associated with hypertension control in China.Conclusion:Hypertension prevalence in China is similar to that in the US,but the control rate in China was significantly lower.Obesity was a critical risk factor for poor hypertension control in China. | Xiaomin Sun Xinguang Chen Zumin Shi Alice Fang Yan Zhongying Li Shiqi Chen Bingtong Zhao Wen Peng Xi Li Mei Zhang Limin Wang Jing Wu Youfa Wang | 2023 | Global Health Journal2023，7，1： | 0 |
| 13 | Geochronology of minerrlization and tectonic setting of Baishidong skaro-type iron deposit in Helony aree of Yanbian,Jilin Province,NE China显示文摘The Baishidong iron deposit is the only skarn-type iron deposit discovered in the study area.According to mineral assemblage and paragenesis,the mineralization can be divided into four metallogenic stages:early garnet-diopside skarn stage,late magnetite-tremolite-epidote skarn stage,early quartz-pyrite-chalcopyrite stage and late quartz-calcite-pyrite stage.Through LA-ICP-MS zircon U-Pb dating of diorite,which is closely related to mineralization,the results show that the weighted average age is 164.6±1.4 Ma,which limits the mineralization time of Baishidong iron deposit during or slightly later than Middle Jurassic.The diorite rocks are rich in sodium(Na_(2)O/K_(2)O=1.24-1.76),aluminium(Al_(2)O_(3)=17.41%-18.76%),LREE and large-ion lithophile elements(Ba,K and Sr),depleted in HREE and high-field-strength elements(Y,Nb,Ta,P and Ti),and show strongly fractionated patterns(LREE/HREE=6.58-9.93),no apparent Eu anomalies(δEu=0.91-1.13),which shows similar characteristics to island arc or active continental margin arc magma.The zirconεHf(t)values range from-22.6 to 5.9,and the age of the two-stage model(t_(DM2))is 836-2633 Ma.Above data combined with the geochemical characteristics,it is indicated that the magma was a mixture of multiple sources,composed of ancient materials and newly formed crust.During the process of evolution and ascending of magma,separation and crystallization occurred,and a large amount of continental crust material was mixed at the same time.Combined with regional tectonic evolution,the formation of this deposit may be related to the westward subduction of the Paleo-Pacific Plate to the Eurasian Plate. | NIE Xitao ZHANG Yajing WANG Fuliang SU Zumin | 2021 | Global Geology2021，24，1： | 0 |
| 14 | Nanostructured BiVO4 Derived from Bi-MOF for Enhanced Visible-light Photodegradation显示文摘BiVO4,a promising visible-light responding photocatalyst,has aroused extensive research interest because of inexpensiveness and excellent chemical stability.However,its main drawback is the poor photoinduced charge-transfer dynamics.Building nanostructures is an effective way to tackle this problem.Herein,we put forward a new method to prepare nanostructured BiVO4 from Bi-based metal-organic frameworks[Bi-MOF(CAU-17)]precursor.The as-prepared material has a rod-like morphology inherited from the Bi-MOF sacrificial template and consists of small nanoparticle as building blocks.Compared with its counterparts prepared by conventional methods,MOF-derived nanostructured BiVO4 shows better light absorption ability,narrower bandgap,and improved electrical conductivity as well as reduced recombination.Consequently,BiVO4 nanostructure demonstrates high photocatalytic activity under visible light towards the degradation of methylene blue.Methylene blue can be degraded up to 90%within 30 min with a reaction rate constant of 0.058 min-1.Moreover,the cycling stability of the catalyst is excellent to withstand unchanged degradation efficiency for at least 5 cycles. | CHEN Jianfei CHEN Xiaoyu ZHANG Xing YUAN Yao BI Ruyi YOU Feifei WANG Zumin YU Ranbo | 2020 | Chemical Research in Chinese Universities2020，36，1： | 0 |
| 15 | Ti-MOF Derived N-Doped TiO2 Nanostructure as Visible-light-driven Photocatalyst显示文摘Nanostructured N-doped TiO2 photocatalyst has been prepared via a new approach from Ti-based MOF[NH2-MIL-125(Ti)]precursor.The success of N doping enhances light absorption and narrows the bandgap.Moreover,the as-prepared nanostructure is constructed with tiny nanoparticles and resembles a pie-like morphology inherited from the MOF,which accelerates electron transfer.Hence,as a photocatalyst for the degradation of methylene blue(MB)under visible light irradiation,the N-doped TiO2(N-TiO2)nanostructure shows higher photocatalytic activity with a reaction rate constant of 0.018min^-1 than that of the TiO2-P25 and TiO2 under the visible light. | HE Yilei ZHANG Xing WEI Yanze CHEN Xiaoyu WANG Zumin YU Ranbo | 2020 | Chemical Research in Chinese Universities2020，36，3： | 0 |
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