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Four Late-type Galaxies with Double Radio Lobes and Properties of Such Galaxies

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Research in Astronomy and Astrophysics 2024年第4期24卷 84-90页

作者： Z.S.yuan X.Y.Gao Z.L.Wen J.L.Han National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China CAS Key Laboratory of FAST National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China School of Astronomy and Space sciences University of Chinese Academy of SciencesBeijing 100049China

The triggering mechanism for radio lobes from late-type galaxies is not fully *** samples are desired for a thorough investigation and *** utilizing the optical data from the newly released Dark energy Spectroscopic Instrument imaging surveys and the radio sources from the NRAO VLA Sky Survey and the Faint Images of the Radio Sky at Twenty-centimeter,we identify four Late-type Galaxies with double Radio Lobes(La GRLs):J02.7-3645,J0947+62.0,J1412.372. and J1736+*** previously known La GRLs,we confirm the correlation between radio power P_(1.4GHz)and stellar mass M_(*)of host ***(2./35)La GRLs belong to the blue cloud galaxies,while the newly identified cases in this work are located within the region of the red *** find a clear correlation between the differential radio power,i.e.,the offset from the P_(1.4GHz)-M_(*)relation,and the galaxy color,indicating that bluer galaxies at a fixed M_(*)tend to host more powerful radio ***,the majority(31/36)of La GRLs are either located in a galaxy group or displaying a disturbed *** suggest that all of the galaxy mass,color and surrounding environment could play important roles in triggering radio lobes in late-type galaxies.

关键词： galaxies:active galaxies:jets galaxies:spiral radio continuum:galaxies

Effect of aspect ratio of elliptical stirred vessel on mixing time and flow field characteristics in the absence of baffles

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chinese Journal of Chemical Engineering 2024年第1期65卷 63-74页

作者： yuan Yao Peiqiao Liu Qian Zhang Zequan Li Benjun Xi Changyuan Tao Yundong Wang Zuohua Liu School of Chemistry and Chemical Engineering Chongqing UniversityChongqing 400044China Hubei Three Gorges Laboratory Yichang 443007China Department of Chemical Engineering Tsinghua UniversityBeijing 100084China

Elliptical tanks were used as an alternative to circular tanks in order to improve mixing efficiency and reduce mixing time in unbaffled stirred tanks(USTs). Five different aspect ratios of elliptical vessels were designed to compare their mixing time and flow field. Computational fluid dynamics(CFD) simulations were performed using the k–ε model to calculate the mixing time and simulate turbulent flow field features, such as streamline shape, velocity distribution, vortex core region distribution, and turbulent kinetic energy(TKE) transfer. Visualization was also carried out to track the tinctorial evolution of the liquid phase. Results reveal that elliptical stirred tanks can significantly improve mixing performance in USTs. Specifically, the mixing time at an aspect ratio of 2.00 is only 45.3% of the one of a circular stirred tank. Furthermore, the secondary flow is strengthened and the vortex core region increases with the increase of aspect ratio. The axial velocity is more sensitive to the aspect ratio than the circumferential and radial velocity. Additionally, the TKE transfer in elliptical vessels is altered. These findings suggest that elliptical vessels offer a promising alternative to circular vessels for enhancing mixing performance in USTs.

关键词： Mixing time CFD Stirred tank Secondary flow Mixing performance

Uncertainties of nuclear level density estimated using Bayesian neural networks

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chinese Physics C 2024年第8期48卷 185-189页

作者： Xinyu Wang Ying Cui yuan Tian Kai Zhao Yingxun Zhang china institute of Atomic {2. Beijing 102413China china Nuclear Data Center China Institute of Atomic EnergyBeijing 102413China Guangxi Key Laboratory of Nuclear Physics and Technology Guangxi Normal UniversityGuilin 541004China

Nuclear level density(NLD)is a critical parameter for understanding nuclear reactions and the structure of atomic nuclei;however,accurate estimation of NLD is challenging owing to limitations inherent in both experimental measurements and theoretical *** paper presents a sophisticated approach using Bayesian neural networks(BNNs)to analyze NLD across a wide range of *** uniquely incorporates the assessment of model *** application of BNNs demonstrates remarkable success in accurately predicting NLD values when compared to recent experimental data,confirming the effectiveness of our *** reliability and predictive power of the BNN approach not only validates its current application but also encourages its integration into future analyses of nuclear reaction cross sections.

关键词： Bayesian neural network nuclear reaction nuclear level density

Trace element abundances in major minerals of Late Permian coals from southwestern Guizhou province,china

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Trace element abundances in major minerals of Late Permian c...

Enhancing multifunctional photocatalysis with acetate-assisted cesium doping and unlocking the potential of Z-scheme solar water splitting

中国科学院地质与地球物理研究所2.02.术年会

作者： Junying Zhang~a,,Deyi Ren~b,Chuguang Zheng~a,Rongshu Zeng~c,Chen-Lin Chou~d,Jing Liu~a a.National Laboratory of Coal Combustion,institute of energy Science and Engineering, Huazhong {2. of Science and Technology,Wuhan 430074,china b.china {2. of Mining and Technology,beijing 100083,china c.institute of Geology and Geophysics,chinese academy of {12.,beijing 10002.,china d.Illinois State Geological Survey,615 East Peabody Drive,Champaign,IL 6182.,USA

Fourteen samples of minerals were separated by handpicking from Late Permian coals in southwestern Guizhou province,*** 14 minerals were nodular pyrite,massive recrystallized pyrite,pyrite deposited from low-temperature hydrothermal fluid and from ground water;clay minerals;and calcite deposited from low-temperature hydrothermal fluid and from ground *** mineralogy,elemental composition,and distribution of 33 elements in these samples were studied by optical microscopy,scanning electron microscope equipped with energy-dispersive X-ray spectrometer(SEM-EDX),X-ray diffraction(XRD),cold-vapor atomic absorption spectrometry(CV-AAS),atomic fluorescence spectrometry(AFS),inductively coupled-plasma mass spectrometry(ICP-MS),and ion-selective electrode(ISE). The results show that various minerals in coal contain variable amounts of trace *** minerals have highconcentrations of Ba,Be,Cs,F,Ga,Nb,Rb,Th,U,and *** has little contribution to the concentration of trace elements in bulk ***,Mn,and Sr are in high concentrations in *** has high concentrations of As,Cd,Hg,mo,Sb,Se,Tl,and Zn. Different genetic types of calcite in coal can accumulate different trace elements;for example Ba, Co,Cr,Hg,Ni,Rb,Sn,Sr,and Zn are in higher concentrations in calcite deposited from low-temperature hydrothermal fluid than in that deposited from ground ***,the concentrations of some trace elements are quite variable in pyrite;different genetic types of pyrites(Py-A,B,C,D) have different concentrations of trace elements,and the concentrations of trace elements are also different in pyrite of low-temperature hydrothermal origin collected from different *** study shows that elemental concentration is rather uniform in a pyrite vein. There are many micron and submicron mosaic pyrites in a pyrite vein,which is enriched in some trace elements,such as As and *** content of trace element in pyrite vein depends upon the content of

关键词： Trace elements Mineralogy Anthracite Late Permian Southwestern Guizhou

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Carbon energy 2024年第3期6卷 178-195页

作者： Mengmeng Ma Jingzhen Li Xiaogang Zhu Kong Liu Kaige Huang Guodong yuan Shizhong Yue Zhijie Wang Shengchun Qu Key Laboratory of Semiconductor Materials Science Beijing Key Laboratory of Low Dimensional Semiconductor Materials and DevicesInstitute of SemiconductorsChinese Academy of SciencesBeijingChina Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijingChina Department of Physics College of Physical Science and TechnologyXiamen UniversityXiamenChina State Key Laboratory for Superlattices and Microstructures Institute of SemiconductorsChinese Academy of SciencesBeijingChina

Graphitic carbon nitride(g-C_(3)N_(4))has been extensively doped with alkali metals to enlarge photocatalytic output,in which cesium(Cs)doping is predicted to be the most ***,the sluggish diffusion and doping kinetics of precursors with high melting points,along with imprecise regulation,have raised the debate on whether Cs doping could make *** this matter,we attempt to confirm the positive effects of Cs doping on multifunctional photocatalysis by first using cesium acetate with the character of easy *** optimized Csdoped g-C_(3)N_(4)(CCN)shows a 41.6-fold increase in visible-light-driven hydrogen evolution reaction(HER)compared to pure g-C_(3)N_(4) and impressive degradation capability,especially with 77%refractory tetracycline and almost 100%rhodamine B degradedwithin an *** penetration ofCs+is demonstrated to be a mode of interlayer doping,and Cs–N bonds(especially with sp^(2. pyridine N in C═N–C),along with robust chemical interaction and electron exchange,are *** atomic configuration triggers the broadened spectral response,the improved charge migration,and the activated photocatalytic ***,we evaluate the CCN/cadmium sulfide hybrid as a Z-scheme configuration,promoting the visible HER yield to 9.02.mmol g^(−1) h^(−1),which is the highest ever reported among all CCN *** work adds to the rapidly expanding field of manipulation strategies and supports further development of mediating served for photocatalysis.

关键词： acetate-assisted cesium doping multifunctional photocatalysis Z-scheme

Research advances in the function and anti-aging effects of nicotinamide mononucleotide

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Journal of Zhejiang university-Science B(Biomedicine & Biotechnology) 2024年第9期25卷 723-735页

作者： Min WANG yuan CAO Yun LI Lu WANG Yuyan LIU Zihui DENG Lianrong ZHU Hongjun KANG chinese PLA Medical School Beijing100853China Department of Critical Care Medicine the First Medical CentreChinese PLA General HospitalBeijing100853China Department of Emergency The Second Hospital of Hebei Medical UniversityShijiazhuang050004China Department of Biochemistry Chinese PLA Medical SchoolBeijing100853China Department of Clinical Nutrition the First Medical CentreChinese PLA General HospitalBeijing100853China Nephrology institute of the chinese People’s Liberation Army State Key Laboratory of Kidney DiseasesNational Clinical Research Center for Kidney DiseasesBeijing Key Laboratory of Kidney Disease ResearchDepartment of Nephrologythe First Medical CenterChinese PLA General HospitalBeijing100853China

Aging and age-related ailments have emerged as critical challenges and great burdens within the global contemporary *** these concerns is an imperative task,with the aims of postponing the aging process and finding effective treatments for age-related degenerative *** investigations have highlighted the significant roles of nicotinamide adenine dinucleotide(NAD+)in the realm of *** has been empirically evidenced that supplementation with nicotinamide mononucleotide(NMN)can elevate NAD+levels in the body,thereby ameliorating certain age-related degenerative *** principal anti-aging mechanisms of NMN essentially lie in its impact on cellular energy metabolism,inhibition of cell apoptosis,modulation of immune function,and preservation of genomic stability,which collectively contribute to the deferral of the aging *** paper critically reviews and evaluates existing research on the anti-aging mechanisms of NMN,elucidates the inherent limitations of current research,and proposes novel avenues for anti-aging investigations.

关键词： Nicotinamide mononucleotide(NMN) Anti-aging energy metabolism Apoptosis DNA repair

Pt／CeO_2.ZrO_2.体催化剂上水汽变换反应催化性能的研究

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中国稀土学报 2005年第S1期23卷 31-34页

作者：刘娜杜霞茹袁中山张纯希王树东中国科学院大连化学物理研究所中国科学院研究生院北京100049

制备了用于水汽变换反应的Pt／CeO2.ZrO2.体催化剂,考察了不同制备方法、洗涤工艺以及Ce-Zr氧化物的不同担载量等因素对水汽变换整体催化剂性能的影响。结果表明均相沉淀法制备的Ce-Zr氧化物在蜂窝表面形成均匀的涂层,催化剂的活性较高... 详细信息

制备了用于水汽变换反应的Pt／CeO2.ZrO2.体催化剂,考察了不同制备方法、洗涤工艺以及Ce-Zr氧化物的不同担载量等因素对水汽变换整体催化剂性能的影响。结果表明均相沉淀法制备的Ce-Zr氧化物在蜂窝表面形成均匀的涂层,催化剂的活性较高,最佳使用温度为 300℃。与水洗工艺相比,采用醇洗工艺可以适当提高催化剂的活性,并且当Ce-Zr担载量为2.％-100％时,催化剂的活性随着担载量的增加而逐渐升高。还考察了空速和不同水气比这两个反应工艺参数对催化性能的影响。

关键词：甲醇自热重整正交实验参数分析

Characterization of local chemical ordering and deformation behavior in high entropy alloys by transmission electron microscopy

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International Journal of Minerals,Metallurgy and Materials 2024年第5期31卷 877-886页

作者： Qiuhong Liu Qing Du Xiaobin Zhang yuan Wu Andrey A.Rempel Xiangyang Peng Xiongjun Liu Hui Wang Wenli Song Zhaoping Lü beijing Advanced Innovation Center for Materials Genome Engineering State Key Laboratory for Advanced Metals and MaterialsUniversity of Science and Technology BeijingBeijing 100083China School of Materials Science and Engineering Ocean University of ChinaQingdao 266100China institute of Metallurgy of the Ural Branch of the Russian academy of {2. Ekaterinburg 620016Russia china Nuclear Power Technology Research institute Co.Ltd. Shenzhen 518000China institute of high {2. Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China

Short-range ordering(SRO)is one of the most important structural features of high entropy alloys(HEAs).However,the chemical and structural analyses of SROs are very difficult due to their small size,complexed compositions,and varied *** electron microscopy(TEM)as well as its aberration correction techniques are powerful for characterizing SROs in these compositionally complex *** this short communication,we summarized recent progresses regarding characterization of SROs using TEM in the field of *** using advanced TEM techniques,not only the existence of SROs was confirmed,but also the effect of SROs on the deformation mechanism was ***,the perspective related to application of TEM techniques in HEAs are also discussed.

关键词： high entropy alloys transmission electron microscopy short-range ordering deformation mechanisms

Advances in methane emissions from agricultural sources:Part *** and mitigation

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Journal of Environmental sciences 2024年第6期140卷 279-291页

作者： Xiaokun Wu Ying Zhang Yinghui Han Yagang Zhang Yuhang Zhang Xiaodan Cheng Pei Zhong Xue yuan yuanxun Zhang Zhengqiang Li State Key Laboratory of Alternate Electrical Power System with Renewable energy Sources North China Electric Power UniversityBeijing 102206China Hebei Key Laboratory of Physics and energy Technology North China Electric Power UniversityBaoding 071003China College of Resources and Environment University of Chinese Academy of SciencesBeijing 101408China Interdisciplinary Mathematics institute University of South CarolinaColumbiaSC 29208United States Aerospace Information Research institute Chinese Academy of SciencesBeijing 100094China

Methane is one of the major greenhouse gases(GHGs)and agriculture is recognized as its primary *** accounting is a prerequisite for developing effective agriculture mitigation *** this review,methane accounting methods and research status for various agricultural emission source including rice fields,animal enteric fermentation and livestock and poultry manure management were overview,and the influencing factors of each emission source were analyzed and *** the same time,it analyzes the different research efforts involving agricultural methane accounting and makes recommendations based on the actual ***,mitigation strategies based on accounting results and actual situation are *** review aims to provide basic data and reference for agriculture-oriented countries and regions to actively participate in climate action and carry out effective methane emission mitigation.

关键词： Methane emission Agricultural sources Accounting methodology Mitigation Emission influencing factors