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Intestinal Flatulence in Pampus argenteus:Changes in Gut Microbiota

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Journal of Ocean University of China 2025年第1期24卷 182-194页

作者： NIE Wenhao ZHANG Man ZHANG Youyi LI Yuanbo XU Shanliang hu Jiabao WANG Yajun YAN Xiaojun Key Laboratory of Applied Marine Biotechnology Ministry of EducationNingbo UniversityNingbo 315832China Key Laboratory of Marine Biotechnology of Zhejiang Province Ningbo UniversityNingbo 315832China College of Marine Sciences Ningbo UniversityNingbo 315832China

Pampus argenteus is a commercially valuable species in many *** artificial cultivation has been impacted by intestinal flatulence,leading to increased ***,the role of gut microbiota in this process remains ***,this study utilized high-throughput sequencing of 16S rRNA genes to investigate the gut microbiota in both flatulent and healthy ***.A total of 227571 high-quality and classifiable reads,representing 312 Amplicon Sequence Variants(ASVs),were *** emerged as the predominant phylum in all samples,with the flatulent group displaying the highest relative abundance(85.3%).Microbial diversity was significantly greater in samples from water than those from *** analysis using Bray-Curtis distance via CPCoA revealed distinct gut microbiota compositions between the samples with flatulence and the healthy ***-occurrence network analysis demonstrated that the bacterial community in the flatulent group exhibited disorder due to the high abundance of *** predictive analysis(PICRUSt2)indicated that flatulence in *** was associated with impaired methane and lipid metabolism,potentially resulting in excessive methane synthesis utilizing hydrogen and acetic acid as substrates produced by Clostridium sensu stricto 1,Cetobacterium,and *** study holds significant implications for early diagnosis and prevention of intestinal flatulence through the regulation of gut microbiota.

关键词： Pampus argenteus gut microbiota 16S rRNA intestinal flatulence PICRUSt2

THECHORD GAUSS CURVATURE FLOW AND ITS L_(p)CHORDMINKOWSKI PROBLEM

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Acta Mathematica Scientia 2025年第1期45卷 161-179页

作者： Jinrong hu Yong huANG Jian LU Sinan WANG School of Mathematics Hunan UniversityChangshaHunan Province410082China Institut für Diskrete Mathematik und Geometrie Technische Universität WienWiedner Hauptstrasse 8-101040WienAustria School of Mathematical Sciences South China Normal UniversityGuangzhou510631China School of Mathematics Hunan UniversityChangsha 410082China

In this paper,the L_(p)chord Minkowski problem is *** on the results shown in[20],we obtain a new existence result of solutions to this problem in terms of smooth measures by using a nonlocal Gauss curvature flow for ... 详细信息

关键词： L_(p)chord Minkowski problem new Monge-Ampere equation geometric fow

P-tuned FeN2 binuclear sites for boosted CO2 electro-reduction

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Journal of Energy Chemistry 2025年第2期101卷 816-824页

作者： Cao Guo Sanshuang Gao Jun Li Menglin Zhou Abdukader Abdukayum Qingquan Kong Yingtang Zhou Guangzhi hu School of Materials and Energy Institute for Ecological Research and Pollution Control of Plateau Lakes School of Ecology and Environmental Science Yunnan University Xinjiang Key Laboratory of Novel Functional Materials Chemistry College of Chemistry and Environmental Sciences Kashi University School of Mechanical Engineering Chengdu University National Engineering Research Center for Marine Aquaculture Marine Science and Technology College Zhejiang Ocean University

The recycling of CO2through electrochemical processes offers a promising solution for alleviating the greenhouse effect;however,the activation of CO2and desorption of*CO in electrocatalytic CO2reduction（ECR） frequently encounter high energy barriers and competitive hydrogen evolution reactions（HERs）,which are urgent problems that need to be *** this study,a catalyst(P100-Fe-N/C) with homogeneous P-tuned FeN2binuclear sites（N2PFe-FePN2） was successfully synthesised,demonstrating satisfactory performance in the ECR to CO.P100-Fe-N/C attains a peak FECOof 98.01% and a normalized TOF of664.7 h-1at-0.7 VRHE,surpassing the performance of the Fe binuclear catalyst without P and singleatoms *** the MEA cell,a FECOexceeding 90% can still be *** functional theory analysis indicates that the asymmetric coordination configuration induced by the incorporation of P facilitates a reduction in the system's *** modulation of P results in the d-band centre of the catalyst being positioned closer to the Fermi level,which facilitates the interaction of the catalyst with CO2,allowing more electrons to be injected into the CO2molecule at the Fe binuclear sites and inhibiting the *** P-tuned FeN2binuclear sites effectively lower the*CO desorption barrier.

关键词： CO2 reduction reaction DFT calculation Diatomic catalyst Electrocatalysis Heteroatom doping

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雪茄风味卷烟纸在卷烟中的感官作用研究

中国造纸 2022年第6期41卷 57-63页

作者：项攀胡少东李成刚何保江李红涛姬凌波屈展付瑜锋徐秀娟河南中烟工业有限责任公司技术中心河南郑州450000 中国烟草总公司郑州烟草研究院河南郑州450000

选取3种雪茄风味香精(1^(#)、2^(#)和3^(#))分别制备加香卷烟纸,并应用于雪茄型卷烟进行感官评价。结果表明,与空白卷烟相比,3^(#)香精制备的卷烟纸能够丰富雪茄型卷烟嗅香,显著提升抽吸感官品质,增强雪茄风格。利用溶剂萃取结合气相色... 详细信息

选取3种雪茄风味香精(1^(#)、2^(#)和3^(#))分别制备加香卷烟纸,并应用于雪茄型卷烟进行感官评价。结果表明,与空白卷烟相比,3^(#)香精制备的卷烟纸能够丰富雪茄型卷烟嗅香,显著提升抽吸感官品质,增强雪茄风格。利用溶剂萃取结合气相色谱-质谱(GC-MS)分析3^(#)香精制备的加香卷烟纸中的挥发性成分。结果表明,溶剂萃取最佳条件为:水为溶剂,提取温度40℃,提取时间2 h。此外,GC-MS共鉴定出50种挥发性成分,其中烟碱(114.61μg/g)、乙基香兰素(82.7μg/g)、香兰素(73.78μg/g)、苯甲醇(52.69μg/g)、乙基麦芽酚(48.44μg/g)、6-甲基香豆素(26.38μg/g)等化合物的含量较高。

关键词：雪茄风味卷烟纸雪茄型卷烟感官评价 GC-MS

A fast decoupled ISAR high-resolution imaging method using structural sparse information under low SNR

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Journal of Systems Engineering and Electronics 2019年第3期30卷 492-503页

作者： XIANG Long LI shaodong YANG Jun CHEN Wenfeng XIANG hu Department of Air Defense Early Warning Equipment Air Force Early Warning Academy Wuhan 430019 China Unit 93253 of the PLA Dalian 116000 China

Inverse synthetic aperture radar (ISAR) image can be represented and reconstructed by sparse recovery (SR) approaches. However, the existing SR algorithms, which are used for ISAR imaging, have suffered from high computational cost and poor imaging quality under a low signal to noise ratio (SNR) condition. This paper proposes a fast decoupled ISAR imaging method by exploiting the inherent structural sparse information of the targets. Firstly, the ISAR imaging problem is decoupled into two sub-problems. One is range direction imaging and the other is azimuth direction focusing. Secondly, an efficient two-stage SR method is proposed to obtain higher resolution range profiles by using jointly sparse information. Finally, the residual linear Bregman iteration via fast Fourier transforms (RLBI-FFT) is proposed to perform the azimuth focusing on low SNR efficiently. Theoretical analysis and simulation results show that the proposed method has better performence to efficiently implement higher-resolution ISAR imaging under the low SNR condition.

关键词： sparse recovery inverse synthetic aperture radar (ISAR) imaging high-resolution signal to noise ratio (SNR) structural sparse information

New Potential Barite Reference Materials for LA-MC-ICP-MS Sulfur Isotope Analysis with Application to Hydrothermal Barite in the huayangchuan Deposit,Western China

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Journal of Earth Science 2025年第1期36卷 1-10页

作者： Jiali Fu Xinqian He Zhaochu hu Shuo Yin Jian Ma Kaiyun Chen Wen Zhang National Key Laboratory of Uranium Resource Exploration-Mining andNuclear Remote Sensing East China UniversityofTechnologyNanchang 330013China State Key Laboratory of Nuclear Resources and Environment East China University of TechnologyNanchang 330013China School of Earth Sciences East China University of TechnologyNanchang 330013China State Key Laboratory of Geological Processes and Mineral Resources China University of GeosciencesWuhan 430078China State Key Laboratory of Continental Dynamics Department of GeologyNorthwest UniversityXi'an 710069China

Sulfur isotopes of S-bearing materials are powerful tools to trace various geological processes and sulfur sources in earth sciences,especially in ore deposits where sulfide-sulfate pair coprecipitates ***,in-situ S isotope determination of barite is challenging without natural matrix-matched reference *** this study,we present two natural barite reference materials(1-YS and 294-YS)for in-situ sulfur isotopic *** LA-MC-ICP-MS laboratories were utilized to test theδ34S micron-scale homogeneity of 1-YS and 294-YS barites that have 2s repeatabilities of better than±0.45‰and±0.41‰,***,the in-situ analysis results are consistent with the results of the bulk analysis by GS-IRMS within *** grand meanδ~(34)S values of 1-YS(13.37‰±0.42‰,2s)and 294-YS(14.38‰±0.44‰,2s)are the final recommended values obtained from four independent *** the results confirm the suitability of 1-YS and 294-YS barite used as calibration materials with respect to in-situ S isotopic ***,the new developed barite reference materials were used as matrix-matched standard to calibrate the barite samples from the huayangchuan carbonatite-hosted U-polymetallic deposit(Qinling orogenic belt,western China)to obtainδ34S *** the temperaturedependentδ34S fractionation of barite-pyrite pair,we calculate the formation temperature of barite(i.e.,506 to 537°C)and theδ34S value of mineralizing fluid(i.e.,-7.11‰to-7.59‰)in the huayangchuan *** results indicate an involvement of sedimentary sulfur,presumably acting as a potential uranium source(e.g.,upper crustal materials)for the giant huayangchuan deposit.

关键词： LA-MC-ICP-MS S isotope reference material barite geothermometry

A new green approach to synthesizing MIP-202@porous silica microspheres for positional isomer/enantiomer/hydrophilic separation

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Chinese Chemical Letters 2025年第1期36卷 501-505页

作者： Zhefei hu Jingwen Liao Jiawen Zhou Lulu Zhao Yanjuan Liu Yuefei Zhang Wei Chen Sheng Tang School of Chemistry and Environmental Engineering Hubei Key Laboratory of Novel Reactor and Green Chemical TechnologyWuhan Institute of TechnologyWuhan 430205China School of Pharmacy Linyi UniversityLinyi 276000China

Metal-organic frameworks(MOFs)with superior physicochemical properties have great potential for applications in chromatographic ***,currently popular methods for the synthesis of MOFbased silica composite materials usually require the use of harmful organic solvents and long-term hightemperature sealing *** order to respond to the needs of green chromatography,it is urgent to develop a new green organic-solvent-free strategy for the synthesis of MOF@SiO_(2)***-202 is a zirconium-MOF constructed from zirconium ion and l-aspartic acid,which features green synthesis as well as good hydrolytic stability and chemical *** this paper,SiO_(2)-NH_(2) was first prepared in a hydrophilic deep eutectic solvent,and then an amino acid-based MOF material(MIP-202)was modified on the surface of the SiO_(2)-NH_(2) in an aqueous solution to obtain a MIP-202@SiO_(2) composite *** multi-mode separation performance of MIP-202@SiO_(2) as a promising liquid chromatographic stationary phase was particularly evaluated and the separation mechanisms were *** MIP-202@SiO_(2) column exhibited excellent separation ability for aromatic positional *** addition,chiral enantiomers and hydrophilic analytes were also satisfactorily detected and *** work provides a new approach for the facile synthesis of MOF-based liquid chromatographic separation material by using green deep eutectic solvent and water as the reaction media.

关键词： Metal-organic framework Stationary phase Deep eutectic solvent Green chromatography High-performance liquid chromatography

Separation of the ionospheric and thermospheric contributions in the data from the Triple Ionosophere Photo Meter onboard the Feng-Yun 3E satellite

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Science China Earth Sciences 2025年第1期68卷 172-184页

作者： Fang JIANG Tian MAO Jin-Song WANG Xiu-Qing hu Xiao-Xin ZHANG Liping FU Nan JIA Tianfang WANG National Space Science Center Chinese Academy of SciencesBeijing100090China Beijing Key Laboratory of Space Environment Exploration Beijing100090China Key Laboratory of Environmental Space Situation Awareness Technology Beijing100090China National Satellite Meteorological Center China Meteorological AdministrationBeijing100081China

The Triple Ionosphere Photo Meter(TRIPM)is a far ultraviolet nadir-view photometer that is onboard the secondgeneration,polar-orbiting Chinese meteorological satellite Feng-Yun 3E(FY-3E),which was launched on July 5,*** has three channels,and each is used to measure different types of emissions:(1)135.6 nm airglow produced by the recombination of the O+ions and electrons in the absence of sunlight(nighttime channel);(2)135.6 nm airglow from the OI when sunlight is present(daytime/dusk-dawn 135.6 nm channel);and(3)Airglow in the N_(2)LBH of the TRIPM(daytime/dusk-dawn N_(2)LBH channel).FY-3E is a satellite operating in the early morning ***,the data are mostly distributed on the dawndusk side or at times when the solar zenith angle is relatively *** this study,combined with simulation calculations,the data are *** further explore the application value of the data products,a model is used to separate the ionospheric radiative recombination contribution from the thermosphere photoelectron impact excitation contribution in the data from the daytime/dusk-dawn 135.6 nm *** approach not only improves the accuracy of O/N_(2)derived from the 135.6 nm channel and N_(2)LBH channel but also provides the ionospheric 135.6 nm radiance at the same time as the *** results show that the 135.6 nm radiance originating from the combination of O+and electrons extracted from the measurement data exhibits similar equatorial anomaly peak structure characteristics and seasonal variations as the corresponding GPS total electron content(TEC)*** the other hand,the separated 135.6 nm radiance generated from the thermosphere photoelectron collision excitation does not contain radiative recombination contributions;thus,the ionosphere influence is greatly avoided when the O/N_(2)is obtained.

关键词： Far ultraviolet 135.6 nm emission intensity Photoelectron impact excitation Radiative recombination excitation

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Direct Photolithography of WO_(x) Nanoparticles for High‑Resolution Non‑Emissive Displays

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Nano-Micro Letters 2025年第3期17卷 297-309页

作者： Chang Gu Guojian Yang Wenxuan Wang Aiyan Shi Wenjuan Fang Lei Qian Xiaofei hu Ting Zhang Chaoyu Xiang Yu‑Mo Zhang Laboratory of Optoelectronic Information Technology and Devices Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201People’s Republic of China Hangzhou Bay Laboratory of Advanced Nano‑Optoelectronic Materials and Devices Qianwan Institute of CNITECHNingbo 315336People’s Republic of China Smart Materials for Architecture Research Lab Innovation Center of Yangtze River DeltaZhejiang UniversityJiaxing 314100People’s Republic of China University of Science and Technology of China Hefei 230026People’s Republic of China State Key Lab of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun 130012People’s Republic of China

High-resolution non-emissive displays based on electrochromic tungsten oxides(WOx)are crucial for future near-eye virtual/augmented reality interactions,given their impressive attributes such as high environmental stability,ideal outdoor readability,and low energy ***,the limited intrinsic structure of inorganic materials has presented a significant challenge in achieving precise patterning/pixelation at the micron ***,we successfully developed the direct photolithography for WOx nanoparticles based on in situ photo-induced ligand *** strategy enabled us to achieve ultra-high resolution efficiently(line width3600 cycles),as well as promising applications in electronic logos,pixelated displays,flexible electronics,*** success and advancements presented here are expected to inspire and accelerate research and development(R&D)in high-resolution non-emissive displays and other ultra-fine micro-electronics.

关键词： Electrochromic Direct photolithography WOx nanoparticles In situ photo-induced ligand exchange High-resolution displays