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Genes & Diseases 2024年第4期11卷 86-89页

作者： Do-Won Jeong Hye-jin Kim Jong-Wan Park Seulbee Lee Hyeryeon Jung Eugene c.Yi Nacksung Kime Yang-Sook chun Department of Biomedical Sciences Seoul National University College of MedicineSeoul 03080Republic of Korea Department of Physiology Seoul National University College of MedicineSeoul 03080Republic of Korea Ischemic/Hypoxic Disease Institute Seoul National University College of MedicineSeoul 03080Republic of Korea Department of Molecular Medicine and Biopharmaceutical Sciences Graduate School of Convergence Science and Technology and College of Medicine Or College of PharmacySeoul National UniversitySeoul 03080Republic of Korea Department of Pharmacology Chonnam National University Medical SchoolGwangju 61469Republic of Korea

Bone undergoes continuous remodeling by tightly-coordinated actions of bone-resorbing osteoclasts and boneforming osteoblasts.1 Recent studies document that the dysregulation of histone methylation profiles is associated with the progression of ***,the specific epigenetic modifiers are incompletely *** this study,we demonstrate an inhibitory role of a variegation 3-9 homolog 1(SUV39H1)in osteoclast formation.

关键词： osteoclast remodeling incomplete

Simple preparation of c(cS)/g-c_(3)N_(4)/co carbon aerogel and its catalytic performance for ammonium perchlorate

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Defence Technology（防务技术） 2024年第3期33卷 186-196页

作者： Yujie Yan Bo jin Rufang Peng State Key Laboratory of Environment-friendly Energy Materials School of Materials Science and EngineeringSouthwest University of Science and TechnologyMianyang621010China

Biomass chitosan(cS)was used as a template,graphitic phase carbon nitride(g-c_(3)N_(4))with high nitrogen content and certain catalytic activity was used as a dopant,and nano-transition metal cobalt(co)was used as a catalytic center *** carbon aerogel(c(cS)/g-c_(3)N_(4)/co)with a three-dimensional network-like structure was prepared by assembling the three materials through experimental operations such as freeze-drying and high-temperature *** was demonstrated by scanning and transmission characterization that the cS in the carbon aerogel could provide more active sites for the cobalt nanoparticles,and the doping of graphite-phase carbon nitride as a template dispersed the cobalt nanoparticles and changed the conductivity of the *** investigate the catalytic effect of carbon aerogel on ammonium perchlorate(AP),it was investigated by differential thermal analyzer and TG thermal *** carbon aerogel was very effective in catalyzing AP,and the 10 wt% content of the catalyst reduced the AP pyrolysis peak from 703.9 to 595.5 *** to further investigate the synergistic effect of the three materials,further carbon aerogels such as c(cS)/co,g-c_(3)N_(4)/co were prepared and applied to catalyze AP,and the same ratio reduced the AP pyrolysis peak by 98.1℃ and 97.7℃.This result indicates a synergistic effect of the assembly of the three materials.

关键词： g-c_(3)N_(4) chitosan co Ammonium perchlorate Pyrolysis kinetics

Toxicity of the disinfectant benzalkonium chloride(c_(14))towards cyanobacterium Microcystis results from its impact on the photosynthetic apparatus and cell metabolism

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Journal of Environmental Sciences 2024年第1期135卷 198-209页

作者： Yunlu Jia Yi Huang jin Ma Shangwei Zhang jin Liu Tianli Li Lirong Song Institute of Hydrobiology Chinese Academy of SciencesWuhan 430072China School of Environmental Studies China University of GeosciencesWuhan 430074China Advanced Interdisciplinary Institute of Environment and Ecology Beijing Normal UniversityZhuhai 519087China

Quaternary ammonium compounds(QAcs)are commonly used in a variety of consumer and commercial products,typically as a component of *** the cOVID-19 pandemic,QAcs became one of the primary agents utilized to inactivate the SARS coV-2 virus on ***,the ecotoxicological effects of QAcs upon aquatic organisms have not been fully *** this study,we examined the effects of a widely used QAc(benzalkonium chloride-c_(14),BAc-14)on two toxigenic Microcystis strains and one non-toxigenic freshwater Microcystis strain and carried out an analysis focused on primary,adaptive and compensatory stress responses at apical(growth and photosynthesis)and metabolic *** analysis revealed that the two toxic Microcystis strains were more tolerant than the non-toxic strain,with 96 hr-Ec_(50)values of 0.70,0.76,and 0.38 mg/L BAc-14 for toxigenic *** FAcHB-905,toxigenic *** FAcHB-469,and non-toxigenic *** FAcHB-908,*** photosynthetic activities of the Microcystis,assessed via F_(v)/F_(m) values,were significantly suppressed under 0.4 mg/L ***,this analysis revealed that BAc-14 altered 14,12,and 8 metabolic pathways in *** FAcHB-905,*** FAcHB-469,and *** FAcHB-908,*** is noteworthy that BAc-14 enhanced the level of extracellular microcystin production in the toxigenic Microcystis strains,although cell growth was not significantly ***,these data show that BAc-14 disrupted the physiological and metabolic status of Microcystis cells and stimulated the production and release of microcystin,which could result in damage to aquatic systems.

关键词： Disinfectants Quaternary ammonium compounds Microcystis cyanotoxin Metabolomics chlorophyll fluorescence

Graphdiyne(c_(n)H_(2n-2))as an"electron transfer bridge"boosting photocatalytic hydrogen evolution over Zn_(0.5)co_(0.5)S/MoS_(2)S-scheme heterojunction

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Rare Metals 2024年第5期43卷 1999-2014页

作者： Mei Li jing-Zhi Wang Zhi-Liang jin School of chemistry and chemical Engineering North Minzu UniversityYinchuan 750021China School of chemistry and chemical Engineering Ningxia Key Laboratory of Solar Chemical Conversion TechnologyKey Laboratory for Chemical Engineering and TechnologyState Ethnic Affairs CommissionNorth Minzu UniversityYinchuan 750021China

In the process of photocatalytic water cracking,the migration rate and utilization rate of photogenerated charges determine the hydrogen evolution performance of the *** this paper,a carbon isotope superconducting material graphdiyne(GDY)is prepared by mechanical ball milling and introduced into the S-scheme heterojunction Zn_(0.5)co_(0.5)S/MoS_(2)inorganic *** terms of hydrogen evolution kinetics,GDY acts as an electron bridge,not only accelerating the migration of photogenerated carriers but also improving the utilization of photogenerated ***,the large twodimensional layer provides more loading and anchoring points for Zn_(0.5)co_(0.5)S/MoS_(2),which increases the number of active *** ternary composite catalyst 20%GDY/Zn_(0.5)co_(0.5)S/MoS_(2)(20-GcSM)generates 69.94μmol of hydrogen(5 h)in triethanolamine *** is 2.97 and1.80 times higher than Zn_(0.5)co_(0.5)S and Zn_(0.5)co_(0.5)S/MoS_(2),*** the cyclic experiment,it still has stable hydrogen evolution performance after standing for24 h(under dark conditions).In addition,the potential mechanism of photocatalytic hydrogen evolution is demonstrated through in-situ X-ray photoelectron *** work provides a reference for further research in the field of introducing carbon materials into photocatalytic systems and improving the utilization of photogenerated charges.

关键词： Graphdiyne S-scheme heterojunction Electron transfer bridge Hydrogen production

Understanding the Activity Performance of comets 38P/Stephan-Oterma,64P/Swift-Gehrels and c/2017 M4(ATLAS) through Broadband Photometric Observations

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Research in Astronomy and Astrophysics 2024年第8期24卷 149-158页

作者： Xuan Zhang jin-Zhong Liu Le-Tian Wang Xinjiang Astronomical Observatory Chinese Academy of Sciences

In this work,we report observations of three comets:38P/Stephan-Oterma,64P/Swift-Gehrels,and c/2017 M4（ATLAS）,conducted with the Nanshan one-meter wide-field telescope in 2018 August and November,and *** extracted morphological features through image enhancement techniques and calculated the dust activity parameter,Afρ,along with dust mass loss rates and coma color indices using broadband photometric *** morphological analysis uncovered a spectrum of dust characteristics among the observed comets,ranging from a significant twisted structure in comet 38P/Stephan-Oterma’s coma to the regular coma envelope surrounding comet 64P/*** Afρvalues varied between 148.8±0.3 cm for 64P/Swift-Gehrels and1118.5±6.2 cm for c/2017 M4 （ATLAS）(measured within a reference aperture radius ofρ=6″),indicating a range from moderate to high activity *** mass loss rates were estimated from 328.1 kg s-1for comet 64P/Swift-Gehrels to 1395.5 kg s-1for comet c/2017 M4 （ATLAS）.The color indices of comets 38P/Stephan-Oterma and c/2017 M4 （ATLAS） closely resemble the average colors of active short-period comets and active longperiod comets,*** contrast,64P/Swift-Gehrels exhibits a significantly bluer hue than typical Jupiter family comets.

关键词： comets: general comets: individual (38P/Stephan-Oterma, 64P/Swift-Gehrels, c/2017 M4 (ATLAS)) techniques: photometric

Tuning mechanical and electrical performances of B_(4)c-TiB_(2)ceramics in a two-step spark plasma sintering process

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Journal of Advanced ceramics 2024年第4期13卷 518-528页

作者： Jun Zhao Xingshuo Zhang Zongning Ma Dong Wang Xing jin Songlin Ran Advanced ceramics Research center School of Materials Science and EngineeringAnhui University of TechnologyMaanshan 243002China Anhui Engineering Research center for High Efficiency Intelligent Photovoltaic Module Chaohu UniversityHefei 238024China

B_(4)c–TiB_(2)is an advanced electrically conductive ceramic with excellent mechanical and electrical discharge machinable *** is challenging and rewarding to achieve highly conductive and hard B_(4)c–TiB_(2)composites at a minimum content of conductive TiB2 that has inferior hardness but double specific gravity of the B_(4)c matrix.A novel strategy was used to construct conductive networks in B_(4)c‒15 vol%TiB2 composite ceramics with B_(4)c,Tic,and amorphous B as raw materials by a two-step spark plasma sintering *** influences of particle size matching between B_(4)c and Tic on the conducting of the strategy and the microstructure were discussed based on the selective matrix grain growth *** mechanical and electrical properties were also systematically *** B_(4)c–15 vol%TiB2 composite ceramic prepared from 10.29µm B_(4)c and 0.05µm Tic powders exhibited a perfect three-dimensional interconnected conductive network with a maximum electrical conductivity of 4.25×10^(4)S/m,together with excellent mechanical properties including flexural strength,Vickers hardness,and fracture toughness of 691±58 MPa,30.30±0.61 GPa,and 5.75±0.32 MPa·m^(1/2),respectively,while the composite obtained from 3.12µm B_(4)c and 0.8µm Tic powders had the best mechanical properties including flexural strength,Vickers hardness,and fracture toughness of 827±35 MPa,32.01±0.51 GPa,and 6.45±0.22 MPa·m^(1/2),together with a decent electrical conductivity of 0.65×10^(4)S/m.

关键词： B_(4)c-TiB_(2) mechanical properties electrical conductivity conductive network

A toast to a zebrafish germ cell induction cocktail

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Science china(Life Sciences) 2024年第6期67卷 1314-1315页

作者： Mary c.Mullins Department of cell and Developmental Biology University of Pennsylvania Perelman School of MedicinePhiladelphia 19104USA

The zebrafish field is ringing in the new year with a publication from Yonghua Sun's laboratory(Wang et al.,2023)of a cocktail of germline factors that can induce all cells of the zebrafish embryo into primordial germ cells(PGcs)at phenomenal *** major advance is not only of great interest to germ cell biologists,but it has important applications to the entire zebrafish field,as shown in Wang et al.(2023).

关键词： fish zebra field

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Performance of evolutionary optimized machine learning for modeling total organic carbon in core samples of shale gas fields

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Petroleum 2024年第1期10卷 150-164页

作者： Leonardo Goliatt c.M.Saporetti L.c.Oliveira E.Pereira Department of computational and Applied Mechanics Federal University of Juiz de Fora Department of computational Modeling Polytechnic Institute Rio de Janeiro State University Petrobras Department of Stratigraphy and Paleontology Rio de Janeiro State University

Rock samples' TOc content is the best indicator of the organic matter in source rocks. The origin rock samples' analysis is used to calculate it manually by specialists. This method requires time and resources because it relies on samples from many well intervals in source rocks. Therefore, research has been done to aid this effort. Machine learning algorithms can estimate total organic carbon instead of well logs and stratigraphic studies. In light of these efforts, the current work present a study on automating the total organic carbon estimation using machine learning approaches improved by an evolutionary methodology to give the model flexibility and precision. Genetic algorithms, differential evolution, particle swarm optimization, grey wolf optimization, artificial bee colony, and evolution strategies were used to improve machine learning models to predict TOc. The six metaheuristics were integrated into four machine learning methods: extreme learning machine, elastic net linear model, linear support vector regression, and multivariate adaptive regression splines. core samples from the YuDong-Nan shale gas field, located in the Sichuan basin, were used to evaluate the hybrid strategy. The findings show that combining machine learning models with an evolutionary algorithms in a hybrid fashion produce flexible models that accurately predict TOc. The results show that, independent of the metaheuristic used to guide the model selection, optimized extreme learning machines attained the best performance scores according to six metrics. Such hybrid models can be used in exploratory geological research,particularly for unconventional oil and gas resources.

关键词： Total organic carbon Hybrid models Automated machine learning Evolutionary algorithms Geology

Pt nanoclusters modified porous g-c_(3)N_(4)nanosheets to significantly enhance hydrogen production by photocatalytic water reforming of methanol

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chinese Journal of chemical Engineering 2024年第2期66卷 40-50页

作者： Yi-Fei Liang jin-Rong Lu Shang-Kun Tian Wen-Quan cui Li Liu Hebei Provincial Key Laboratory of Environmental Photocatalytic and Electrocatalytic Materials College of Chemical EngineeringNorth China University of Science and TechnologyTangshan 063210China

For the use of green hydrogen energy,it is crucial to have efficient photocatalytic activity for hydrogen generation by water reforming of methanol under mild *** attention has been paid to gc_(3)N_(4)as a promising photocatalyst for the generation of *** improve the separation of photogenerated charge,porous nanosheet g-c_(3)N_(4)was modified with Pt nanoclusters(Pt/g-c_(3)N_(4))through impregnation and following photo-induced *** catalyst showed excellent photocatalytic activity of water reforming of methanol fo r hydrogen production with a 17.12 mmol·g^(-1)·h^(-1)rate at room temperature,which was 311 times higher than that of the unmodified g-c_(3)N_(4).The strong interactions of Pt-N in Pt/g-c_(3)N_(4)constructed effective electron transfer channels to promote the separation of photogenerated electrons and holes *** addition,in-situ infrared spectroscopy was used to investigate the intermediates of the hydrogen production reaction,which proved that methanol and water eventually turn into H_(2)and cO_(2)via formaldehyde and *** study provides insights for understanding the photocatalytic hydrogen production in the water reforming of methanol.

关键词： Water reforming of methanol Photocatalysis g-c_(3)N_(4) Pt nanoclusters Hydrogen production

Engineering g-c_(3)N_(4)based materials for advanced photocatalysis:Recent advances

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Green Energy & Environment 2024年第2期9卷 166-197页

作者： Xin-Lian Song Lei chen Li-Jiao Gao jin-Tao Ren Zhong-Yong Yuan National Institute for Advanced Materials School of Materials Science and EngineeringSmart Sensing Interdisciplinary Science CenterNankai UniversityTianjin300350China Key Laboratory of Advanced Energy Materials chemistry(Ministry of Education) Nankai UniversityTianjin300071China

Photocatalysis driven by abundant yet intermittent solar energy has considerable potential in renewable energy generation and environmental *** outstanding electronic structure and physicochemical properties of graphitic carbon nitride(g-c_(3)N_(4)),together with unique metal-free characteristic,make them ideal candidates for advanced photocatalysts *** review summarizes the up-to-date advances on g-c_(3)N_(4)based photocatalysts from ingenious-design strategies and diversified photocatalytic ***,the advantages,fabrication methods and limitations of each design strategy are systemically *** order to deeply comprehend the inner connection of theory–structure–performance upon g-c_(3)N_(4)based photocatalysts,structure/composition designs,corresponding photocatalytic activities and reaction mechanisms are jointly discussed,associated with introducing their photocatalytic applications toward water splitting,carbon dioxide/nitrogen reduction and pollutants degradation,***,the current challenges and future perspectives for g-c_(3)N_(4)based materials for photocatalysis are briefly *** design strategies and limitations are also instructive for constructing g-c_(3)N_(4) based materials in other energy and environment-related applications.

关键词： Graphitic carbon nitride g-c_(3)N_(4) Design strategies Photocatalysis Photocatalysts Reaction mechanism