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Journal of Iron and Steel Research International 2024年第1期31卷 3-23页

作者： Xue-cheng Peng Han-jie Guo Xin-fang Zhang Yi-wa Luo Ye Sun jing Guo Rong-guang Yang xiao-dan Zheng School of Metallurgical and Ecological Engineering University of Science and Technology Beijing(USTB)Beijing100083China Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials University of Science and Technology Beijing(USTB)Beijing100083China Beijing Shougang Gitane New MATERIALS Co. Ltd.Beijing102206China

Heat-resistant alloys with excellent mechanical properties are widely used in various fields,and further improvement in their properties is essential to meet the requirements in new-generation advanced supercritical boilers,nuclear reactors,superheaters,and other new materials *** effectively enhance the comprehensive performance of heat-resistant alloys,second-phase particle strengthening has been widely studied,and in the face of different service envi-ronments of advanced heat-resistant steels,the selection of suitable second-phase particles is essential to maximize the performance of these *** this end,three major types of reinforcing phases in heat-resistant alloys such as carbides,rare earth oxides,and intermetallic compounds are summarized.A comparative analysis of the precipitation behavior of the reinforcing phases with different types as well as the risks and means of controlling their use in service,is *** parameters for the application of various types of second-phase particles in heat-resistant alloys are provided to support the design and preparation of new ultrahigh-performance heat-resistant alloys.

关键词： Heat-resistant alloy Second-phase particle Carbide Rare earth oxide Intermetallic compound Strengthening

Karstsinnectes cehengensis(Cypriniformes:Nemacheilidae),a new species of cave fish from Guizhou,China

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Zoological Systematics 2024年第2期49卷 101-115页

作者： Xinrui Zhao Changting Lan Tao Luo jing Yu Jiajun Zhou Ning xiao Jiang Zhou School of Karst Sciences Guizhou Normal UniversityGuiyang 550025China School of Life Sciences Guizhou Normal UniversityGuiyang 550001China Zhejiang Forest Resource Monitoring Center Hangzhou 310020China Zhejiang Forestry Survey Planning and Design Company Limited Hangzhou 310020China Guiyang Healthcare Vocational University Guiyang 550081China

Four species of the genus Karstsinnectes,which live in dark,low-energy groundwater ecosystems,are currently recorded,mainly distributed in the upstream of the Pearl River,the Youjiang River and the Hongshui *** biodiversity surveys is particularly difficult due to the particular cave habitats inhabited by these *** this work,we describe a new cave fish of the genus Karstsinnectes,namely *** Luo,Zhao&Zhou,***.,collected from the Beipanjiang River,the upstream of the Hongshui ***,the four individuals of the new species form a phylogenetically separate lineage,as the sister clade of ***,with a 9.4–9.5%genetic difference in mitochondrial Cyt ***,the new species can be distinguished from its congeners by a combination of the following morphological characteristics:body naked,without body color;eyes reduced,diameter 1.4–3.8%of head length;anterior and posterior nostrils adjacent,anterior nostril not elongated to a barbel-like tip;lateral line incomplete;caudal fin forked;dorsal-fin rays iii-7,pectoral-fin rays i-11–12,pelvic-fin rays i-7,anal-fin rays iii-5,with 14 branched caudal-fin *** discovery of this new species represents the northernmost distribution of species within the genus Karstsinnectes and the first record from Guizhou *** currently known species of this genus inhabited in caves,making them ideal organisms for studying historical river connectivity and cave formation process.

关键词： Diversity karst cave morphology phylogeny Karstsinnectes

Expression and significance of pigment epithelium-derived factor and vascular endothelial growth factor in colorectal adenoma and cancer

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World Journal of Gastrointestinal Oncology 2024年第3期16卷 670-686页

作者： Ye Yang Wu Wen Feng-Lin Chen Ying-Jie Zhang xiao-Cong Liu xiao-Yan Yang Shan-Shan Hu Ye Jiang jing Yuan Digestive Diseases Chengdu Qingbaijiang District People's HospitalChengdu 610300Sichuan ProvinceChina Digestive Diseases Chengdu Second People’s HospitalChengdu 610000Sichuan ProvinceChina Graduate School Chengdu Medical CollegeChengdu 610000Sichuan ProvinceChina

BACKGROUND The incidence and mortality of colorectal cancer(CRC)are among the highest in the world,and its occurrence and development are closely related to tumor *** the balance between pigment epithelium-derived factors(PEDF)that inhibit angiogenesis and vascular endothelial growth factors(VEGF)that stimulate angiogenesis is broken,angiogenesis is out of control,resulting in tumor ***,it is very necessary to find more therapeutic targets for CRC for early intervention and later *** To investigate the expression and significance of PEDF,VEGF,and CD31-stained microvessel density values(CD31-MVD)in normal colorectal mucosa,adenoma,and *** In this case-control study,we collected archived wax blocks of specimens from the Digestive Endoscopy Center and the General Surgery Department of Chengdu Second People's Hospital from April 2022 to October *** cases of specimen wax blocks were selected as normal intestinal mucosa confirmed by electronic colonoscopy and concurrent biopsy(normal control group),50 cases of specimen wax blocks were selected as colorectal adenoma confirmed by electronic colonoscopy and pathological biopsy(adenoma group),and 50 cases of specimen wax blocks were selected as CRC confirmed by postoperative pathological biopsy after inpatient operation of general surgery(CRC group).An immunohistochemical staining experiment was carried out to detect PEDF and VEGF expression in three groups of specimens,analyze their differences,study the relationship between the two and clinicopathological factors in CRC group,record CD31-MVD in the three groups,and analyze the correlation of PEDF,VEGF,and CD31-MVD in the colorectal adenoma group and the CRC *** F test or adjusted F test is used to analyze measurement data ***-Wallis rank sum test was used between groups for ranked *** chi-square test,adjusted chi-square test,or Fisher's exact test were used to compare the rates betwe

关键词： Pigment epithelium-derived factors Vascular endothelial growth factor Microvessel density Colorectal adenoma Colorectal cancer Targeted therapy

Light-responsive Self-Immolative L-glutamic Acid-based Polyester Nanoparticles for Controlled Drug Release via Passerini Three-Component Polymerization

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Chinese Journal of Polymer Science 2024年第5期42卷 570-578,I0005页

作者： xiao-Fei Sun Xu Zhang Shu-Ping Song Ya-Qun Yao Yan Zhang Cheng-Liang Wang jing-Jiang Sun Qing-Fu Wang Key Laboratory of Rubber-plastics Ministry of EducationSchool of Polymer Science and EngineeringQingdao University of Science and TechnologyQingdao266042China Qingdao Research Academy of Environmental Science Qingdao266012China

L-glutamic acid(LA)is a bio-based,non-toxic,environmentally friendly material derived from *** present study reports the application of Passerini three-component polymerization(P-3CP)for the straightforward preparation of LA-based light-responsive polyesters(PLTDs)under mild *** with molar masses up to 8500 g/mol and high yields exceeding 90%are *** chemical structures and light-responsive self-immolative behavior of PLTDs are comprehensively characterized by employing ultraviolet-visible(UV-Vis)spectroscopy,size exclusion chromatography(SEC),nuclear magnetic resonance(NMR)spectroscopy,and liquid chromatography mass spectrometry(LC-MS).Meanwhile,monodisperse PLTD-based doxorubicin-loaded nanoparticles(PLTD-DOX-NP)(size=193 nm,PDI=0.018)are formulated by nanoprecipitation *** light-induced depolymerization,the PLTD-DOX-NP undergoes rapid decomposition,resulting in a burst release of 80%cargo within 13 ***,according to biological toxicity tests,the PLTD-NP possesses adequate biosafety,both before and after ***,the incorporation of P-3CP with biorenewable LA-based monomer adheres to the principles of green chemistry,significantly simplifying the synthetic pathway of light-responsive polymers.

关键词： L-glutamic acid Passerini three-component polymerization Light-responsive Polyester Nanoparticles

Single transition-metal atoms anchored on a novel Diracdispersiveπ-πconjugated holey graphitic carbon nitride substrate:computational screening toward efficient bifunctional OER/ORR electrocatalysts

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Rare Metals 2024年第8期43卷 3819-3832页

作者： Chun-Yao Fang Xi-Hang Zhang Qiang Zhang Di Liu xiao-Meng Cui jing-Cheng Xu Cheng-Long Shi Meng-Yu Yang College of Science University of Shanghai for Science and TechnologyShanghai 200093China School of Materials and Chemistry University of Shanghai for Science and TechnologyShanghai 200093China

Nonprecious-metal-group single-metal-atom catalysts with bifunctional catalytic capabilities toward the oxygen evolution reaction(OER)and oxygen reduction reaction(ORR)are highly sought after in energy-conversion and storage ***,producing renewable and sustainable energy sources remains ***,single-transition metal atoms anchored onπ-πconjugated two-dimensional(2D)graphitic carbon nitride substrates formπ-d conjugated conductive channels that enhance the overall electrocatalytic ***,firstprinciples calculations were carried out to design and demonstrate a novel macropore graphitic carbon nitride(gC_(10)N_(3))as a promising 2D electrocatalyst substrate to support single-transition metal(TM,from Sc to Au).The"donation-acceptance"charge interaction in the TM-N_(2)moiety effectively balances the adsorption strength of oxygenated intermediates in Ni@g-C_(10)N_(3)and Rh@gC_(10)N_3,making them effective bifunctional OER/ORR electrocatalysts with IrO_(2)/Pt-beyond overpotentials being as low as 0.39/0.38 V and 0.54/0.44 V,***,they possess high stability and conductivity and are less susceptible to oxidation and corrosion under working *** guarantees high activity under ambient ***,the origin of the OER/ORR activity of TM@g-C_(10)N_(3) is explained using multilevel descriptors:intrinsic(p,Bader charge,integral crystal orbital Hamilton population(ICOHP),bond length,and d-band center(εd).In particular,for optimal Ni@g-C_(10)N_(3),the clear hybridization between the Ni-d orbital and surface O-p orbital causes the paired electrons to occupy the bonding *** enables OH~*to be adsorbed on the Ni@g-C_(10)N_(3),thereby achieving the highest catalytic performance.

关键词： First-principles calculation Oxygen evolution reaction Oxygen reduction reaction Bifunctional electrocatalysts Single-metal-atom electrocatalysts

Mitochondrial carrier homolog 2 increases malignant phenotype of human gastric epithelial cells and promotes proliferation,invasion,and migration of gastric cancer cells

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World Journal of Gastrointestinal Oncology 2024年第3期16卷 991-1005页

作者： jing-Wen Zhang Ling-Yan Huang Ya-Ning Li Ying Tian Jia Yu xiao-Fei Wang School of Basic Medical Science NHC Key Laboratory of Metabolic Cardiovascular Diseases ResearchNingxia Medical UniversityYinchuan 750004Ningxia Hui Autonomous RegionChina Department of Pathology General Hospital of Ningxia Medical UniversityYinchuan 750004Ningxia Hui Autonomous RegionChina School of Clinical Medicine Ningxia Medical UniversityYinchuan 750004Ningxia Hui Autonomous RegionChina Department of Pathology North China University of Science and Technology Affiliated HospitalTangshan 063000Hebei ProvinceChin

BACKGROUND The precise role of mitochondrial carrier homolog 2(MTCH2)in promoting malignancy in gastric mucosal cells and its involvement in gastric cancer cell metastasis have not been fully *** To determine the role of MTCH2 in gastric *** We collected 65 samples of poorly differentiated gastric cancer tissue and adjacent tissues,constructed MTCH2-overexpressing and MTCH2-knockdown cell models,and evaluated the proliferation,migration,and invasion of human gastric epithelial cells(GES-1)and human gastric cancer cells(AGS)*** mito-chondrial membrane potential(MMP),mitochondrial permeability transformation pore(mPTP)and ATP fluorescence probe were used to detect mitochondrial *** function and ATP synthase protein levels were detected via Western *** The expression of MTCH2 and ATP2A2 in gastric cancer tissues was significantly greater than that in adjacent *** of MTCH2 promoted colony formation,invasion,migration,MMP expression and ATP production in GES-1 and AGS cells while upregulating ATP2A2 expression and inhibiting cell apoptosis;knockdown of MTCH2 had the opposite effect,promoting overactivation of the mPTP and promoting *** MTCH2 can increase the malignant phenotype of GES-1 cells and promote the proliferation,invasion,and migration of gastric cancer cells by regulating mitochondrial function,providing a basis for targeted therapy for gastric cancer cells.

关键词： Gastric cancer Mitochondrial carrier homolog 2 ATP synthase ATP2A2 Mitochondrial permeability transformation pore

Crop residue burning in China (2019-2021): Spatiotemporal patterns, environmental impact, and emission dynamics

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Environmental Science and Ecotechnology 2024年第5期21卷 158-167页

作者： Qiancheng Lv Zeyu Yang Ziyue Chen Manchun Li Bingbo Gao jing Yang xiao Chen Bing Xu Faculty of Geographical Science Beijing Normal UniversityBeijing100875China School of Geography and Ocean Science Nanjing UniversityNanjing210023China College of Land Science and Technology China Agriculture UniversityBeijing100083China Department of Earth System Science Tsinghua UniversityBeijing100084China

Crop residue burning(CRB)is a major contributor to air pollution in *** fire detection methods,however,are limited by either temporal resolution or accuracy,hindering the analysis of CRB's diurnal *** we explore the diurnal spatiotemporal patterns and environmental impacts of CRB in China from 2019 to 2021 using the recently released NSMC-Himawari-8 hourly fire *** analysis identifies a decreasing directionality in CRB distribution in the Northeast and a notable southward shift of the CRB center,especially in winter,averaging an annual southward movement of 7.5.Additionally,we observe a pronounced skewed distribution in daily CRB,predominantly between 17:00 and 20:***,nighttime CRB in China for the years 2019,2020,and 2021 accounted for 51.9%,48.5%,and 38.0%respectively,underscoring its significant environmental *** study further quantifies the hourly emissions from CRB in China over this period,with total emissions of CO,PM10,and PM_(2.5) amounting to 12,236,2,530,and 2,258 Gg,*** findings also reveal variable lag effects of CRB on regional air quality and pollutants across different seasons,with the strongest impacts in spring and more immediate effects in late *** research provides valuable insights for the regulation and control of diurnal CRB before and after large-scale agricultural activities in China,as well as the associated haze and other pollution weather conditions it causes.

关键词： Crop residue burning Atmospheric pollutants NSMC-Himawari-8 Lagging effects

Defined organic-octamolybdate crystalline superstructures derived Mo_(2)C@C as efficient hydrogen evolution electrocatalysts

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Chinese Chemical Letters 2024年第6期35卷 201-205页

作者： Jiao Li Chenyang Zhang Chuhan Wu Yan Liu Xuejian Zhang xiao Li Yongtao Li jing Sun Zhongmin Su School of Materials Science and Engineering Jilin Jianzhu UniversityChangchun 130018China School of Chemical and Environmental Engineering Changchun University of Science and TechnologyChangchun 130022China

Hydrogen evolution electrocatalysts derived from metal-organic crystalline frameworks can inherit the merits of ordered and adjustable structures with high surface *** this paper,organic-octamolybdate crystalline superstructures(OOCS)with a fixed stoichiometric ratio of Mo_(8)(L)_(2) and high Mo content(>40 wt%)were synthesized using flexible ligands with controllable lengths(named as OOCS-1-3).Then,molybdenum carbides coated with carbon layers as electrocatalysts(Mo_(2)C@C-1-3)can be obtained directly from a one-step high-temperature carbonization process using OOCS-1-3 as *** a typical example,Mo_(2)C@C-3 exhibits satisfactory hydrogen evolution activity with a low overpotential of 151 m V(1.0 mol/L KOH)at 10 m A/cm^(2) and stability for 24 *** electrocatalytic activity is mainly from the synergistic interactions between the carbon layers and molybdenum carbide ***,compared with the initial content of C,N,Mo in OOCS and Mo_(2)C@C,the catalytic activity increases with the N *** work makes organic-octamolybdate crystalline superstructures used as general precursors to product high Mo content electrocatalysts applied in energy storage and conversion fields.

关键词： Molybdenum carbides Electrocatalysts Organic-octamolybdate crystalline superstructures Synergistic interactions Hydrogen evolution reaction(HER)

Coupling Co2P nanoparticles onto N,P-doped biomass-derived carbon as efficient electrocatalysts for flexible Zn–air batteries

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Rare Metals 2024年第10期43卷 4982-4991页

作者： Shu-Qi Li Kang Sun Yan-Yan Liu Shu-Ling Liu jing-jing Zhou Wen-Bo Zhang Yi-Hang Lu Xiang-Meng Chen xiao-Peng Wang Bao-Jun Li Jian-Chun Jiang College of Science Henan Agricultural University Department of Chemistry Tsinghua University College of Chemistry Zhengzhou University Institute of Chemical Industry of Forest Products National Engineering Lab for Biomass Chemical UtilizationKey and Open Lab on Forest Chemical EngineeringChinese Academy of ForestryState Forestry Administration

Catalysts for oxygen conversion play an important role in energy storage and conversion technologies such as metal-air *** highly active stable,and low-cost catalysts is critical for further implementation of the above ***,an efficien oxygen electrocatalyst with Co2P nanoparticles （NPs）coupling onto N,P-doped porous carbon nanosheets（Co2P@NPAC） derived from cotton stalk is successfully designed and prepared via activation,hydrothermal treatment,and pyrolysis *** excellent properties of electrical conductivity,mass transfer,and synergistic integration between Co2P and N,P-doped carbon endow Co2P@NPAC composite with superior oxygen reduction reaction/oxygen evolution reaction （ORR/OER） ***2P@NPAC catalyst achieves ORR activity with half-wave potential of 0.85 V and high OER activity with overpotential of 261 mV at 10 mA·*** flexible Zn-air batteries （ZABs） based on Co2P@NPAC catalyst revea outstanding performances with a high open-circuit voltage（1.38 V）,a peak power density of (75 mW·cm-2),and a low charge-discharge voltage gap （0.74 V,～200 cycles）The flexible ZABs express the stable discharge-charge voltage gap at various bending *** work provides interesting inspiration for the ingenious design of efficien carbon electrocatalysts from biomass with potential application of energy storage and conversion devices.

关键词： Cotton stalk Flexible Zn–air batteries N,P-doped activated carbon Oxygen reduction reaction

Effect of magnetic resonance imaging in liver metastases

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World Journal of Gastroenterology 2024年第1期30卷 112-114页

作者： Xing-Liang Huang xiao-Dong Wang Zhao-Miao Gong Yan-Feng Zheng jing-Xin Mao Department of Science and Education Dianjiang People's Hospital of ChongqingChongqing 408399China Department of Science and Industry Chongqing Medical and Pharmaceutical CollegeChongqing 400030China

This letter to the editor is a commentary on a study titled"Liver metastases:The role of magnetic resonance imaging."Exploring a noninvasive imaging evaluation system for the biological behavior of hepatocellular carcinoma(HCC)is the key to achieving precise diagnosis and treatment and improving *** review summarizes the role of magnetic resonance imaging in the detection and evaluation of liver metastases,describes its main imaging features,and focuses on the added value of the latest imaging tools(such as T1 weighted in phase imaging,T1 weighted out of phase imaging;diffusion-weighted imaging,T2 weighted imaging).In this study,I investigated the necessity and benefits of gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid for HCC diagnostic testing and prognostic evaluation.

关键词： Liver metastases Magnetic resonance imaging Liver-specific contrast agents Gadolinium-ethoxybenzyl-diethylenetriamine pentaacetic acid Hepatocellular carcinoma Hepatobiliary contrast agents