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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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Folding encapsulation toward Lindqvist polyoxometalates within adaptive coordination cages for catalysis

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Science China Chemistry 2025年第2期68卷 561-569页

作者： Ying-Mei Zhong Jin-Jin Xuan Xujie Qin Han Xiao Zi-Jun Xia Li-Peng Zhou Xiao-qing Guo Yu-Hang hu Lu Zhang Chunsen Li Li-Xuan Cai qing-Fu Sun State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China University of Chinese Academy of Sciences Beijing 100049China College of Chemistry and Materials Science Fujian Normal UniversityFuzhou 350007China

In nature,enzymes at specific folded conformations exhibit high substrate complementarity,enabling them to efficiently and selectively catalyze biochemical *** by enzymes,coordination cages with conformational dynamics have been designed and are receiving increasing attention due to their versatile applications in allosteric guest binding and *** present here two enzyme-mimicking adaptive macrocycle-based coordination cages,Pd_(2)L_(2)^(1) and Pd_(2)L_(2)^(2),from macrocycle-based ligands(L^(1) and L^(2))and the encapsulation and stabilization of Lindqvist polyoxometalates anions M6O192−(M=W or Mo)in neutral aqueous solution.X-ray crystallographic studies have verified the formation of 1:1 host-guest complexes of two Pd_(2)L_(2) cages and the W6O192−anion,via an induced-fit folding *** with the free host,Pd_(2)L_(2)^(1) exhibited an induced-fit semi-folded conformation in the inclusion complex,while Pd_(2)L_(2)^(2) adopted an induced-fit fully-folded ***,the Mo_(6)O_(19)⊂Pd_(2)L_(2) host-guest complexes demonstrate high yield and selectivity in the oxidative decontamination reaction of the sulfur mustard simulant,2-chloroethyl ethyl *** work not only sheds light on the importance of conformational adaptability in enzyme-like systems but also paves the way for protecting labile POM clusters via host-guest encapsulation toward enhanced catalytic performance in aqueous solution.

关键词： coordination cage induced-fit polyoxometalates host-guest chemistry supramolecular catalysis

Sedimentary facies analysis,palaeogeography,and reservoir quality of the Middle-Upper Cambrian Xixiangchi Formation in southeast Sichuan Basin, southwest China

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Journal of Palaeogeography 2025年第01期14卷 245-276页

作者： Oumar Ibrahima Kane Ming-Yi hu Quan-Sheng Cai qing-Jie Deng Ze-Bin Tong Institute of Sedimentary Geology Chengdu University of Technology State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation School of Geosciences Yangtze University School of Geosciences China University of Petroleum (East China)

Various data were utilized to analyze the sedimentary facies,completely reconstruct the palaeogeographic maps,and evaluate the reservoir quality of the Middle-Upper Cambrian Xixiangchi Formation in the Sichuan Basin,including evidence from field outcrops,drilling cores,microscopic thin sections,scanning electron microscopy （SEM）,combined with experimental analysis data,such as petrophysical data(porosity （%） and permeability （mD）),and radioactive elements (uranium (238U),thorium (232Th),and potassium (40K)),and isotopic data (δ13C)).In the Sichuan Basin,the Middle-Upper Cambrian Xixiangchi Formation was principally deposited in a restricted platform with a lithology predominantly composed of dolomite,with local occurrences of limestone and other rock types in small *** beddings,cross beddings,horizontal beddings,storm depositions,and mud cracks locally developed in some *** 3rd-order sequences （SQ1-SQ4） were identified within the Xixiangchi Formation in this *** sequence is subdivided into a highstand systems tract （HST） and a transgressive systems tract （TST）.Reservoirs are principally developed in high-energy grain shoal deposits located in SQ2 and SQ3,with a minor occurrence in SQ1 and *** lithology of these shoal deposits is essentially composed of sandy dolomite and crystalline dolomite characterized by relatively low average porosity （2.61%） and permeability （1.0073 mD） *** increase of these values in several studied samples might be related to seepage and connecting dissolution pores and vugs through fractures which have a constructive effect on porosity and *** occurrence of karst caves through superimposed supergene karstification and bedding karstification highly improved the reservoir's physical properties in some *** reservoir space is dominated by intergranular dissolution pores,karst caves,and fractures,and their formation was controlled by sedimentation,diagenesis,penecontemporaneous dissolu

关键词： Sedimentary facies Palaeogeography Reservoir quality Reservoir prediction Cambrian Xixiangchi Formation Sichuan Basin

The circadian clock affects starvation resistance through the pentose phosphate pathway in silkworm,Bombyx mori

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Insect Science 2025年第1期32卷 55-68页

作者： Tai-Ming Dai Jian-Feng Qiu Cheng Luo Wen-Zhao Cui Kai Liu Jiang-Lan Li Ruji Peng Yang-hu Sima Shi-qing Xu School of Life Sciences Suzhou Medical College of Soochow UniversitySuzhouJiangsu ProvinceChina Institute of Agricultural Biotechnology&Ecology(IABE) Soochow UniversitySuzhouJiangsu ProvinceChina

Disruption of the circadian clock can affect starvation resistance,but the molecular mechanism is still ***,we found that starvation resistance was significantly reduced in the core gene BmPer deficient mutant silkworms(Per−/−),but the mutant's starvation resistance increased with larval *** natural physiological conditions,the weight of mutant 5th instar larvae was significantly increased compared to wild type,and the accumulation ability of triglycerides and glycogen in the fat bodies was ***,under starvation conditions,the weight consumption of mutant larvae was increased and cholesterol utilization was *** analysis showed that beta-oxidation was significantly upregulated under starvation conditions,fatty acid synthesis was inhibited,and the expression levels of genes related to mitochondrial function were significantly *** investigations revealed that the redox balance,which is closely related to mitochondrial metabolism,was altered in the fat bodies,the antioxidant level was increased,and the pentose phosphate pathway,the source of reducing power in cells,was *** findings suggest that one of the reasons for the increased energy burden observed in mutants is the need to maintain a more robust redox balance in metabolic *** necessitates the diversion of more glucose into the pentose phosphate pathway to ensure an adequate supply of reducing power.

关键词： Bombyx mori circadian clock oxidative stress pentose phosphate pathway starvationresistance

Topologically close-packed intermetallic alloy electrocatalysts for CO_(2) reduction towards high value-added multi-carbon chemicals

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Chinese Chemical Letters 2025年第1期36卷 6-7页

作者： Qiyan Wu qing Li State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China

The continuous combustion of unsustainable carbon-based fossil fuels has dramatically accelerated the increase in carbon dioxide(CO_(2))concentration in the atmosphere(from approximately278.3 ppm in 1750 to 417.9 ppm in 2023),which would exacerbate environmental problems such as greenhouse effect[1].The effective electrosynthesis of high value-added multi-carbon(C_(2+))chemicals(e.g.,ethanol,ethylene)from CO_(2) reduction reaction(CO_(2)RR)is a promising strategy to mitigate these environmental issues mentioned above but remains highly challenging due to the competition of hydrogen evolution reaction(HER)and low selectivity of target products.

关键词： intermetallic alloy carbon

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Visual electrophysiological assessment of children with poor response to treatment for functional amblyopia

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International Journal of Ophthalmology(English edition) 2025年第2期18卷 315-322页

作者： Dong-qing Yuan Wei-Wei Zhang Liu-Wei Gu qing-huai Liu Department of Ophthalmology Jiangsu Province Hospitalthe First Affiliated Hospital of Nanjing Medical UniversityJiangsu Women and Children Health HospitalNanjing 210029Jiangsu ProvinceChina

AIM:To assess the visual electrophysiological outcomes in children with functional amblyopia who exhibited poor response to conventional ***:Twenty-one children with functional amblyopia,aged 5.7±2.1y(range:4-10y),underwent comprehensive ophthalmic and refractive *** domain-optical coherence tomography(SD-OCT)and multifocal electroretinography(mfERG)were conducted to analyze the macular retinal thickness and the first-order response P1 ring of the mfERG in the amblyopic eye(AE)compared to the fellow good eye(GE).RESULTS:Initially,visual acuity in the AE ranged from 20/800 to 20/40,while the GE exhibited a range of 20/25 to 20/20(P<0.01).After 6mo of treatment,17 patients demonstrated improved visual acuity in the AE to 20/50 or better,while 4 children showed no ***-OCT revealed comparable macular and optic disc structures between the AE and *** to treatment,the mfERG P1 ring amplitude was significantly reduced in the AE compared to GE(P<0.05).The AE/GE ratio of P1 ring amplitude showed significant improvement ***,a smaller AE/GE ratio before treatment was associated with poorer improvement ***:In the management of functional amblyopia,a thorough assessment of amblyopic eye examinations is *** 20%of amblyopic eyes may not achieve significant improvement in visual acuity,despite the absence of detectable organic retinal *** may reveal underlying *** mfERG into initial assessments or treatment follow-ups can aid in identifying potential hidden retinal defects and predicting the prognosis of the amblyopic eye.

关键词： functional amblyopia poor response optical coherence tomography multifocal electroretinography retinal defects

Andreev reflection in superconducting state of pressurized La3Ni2O7

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Science China(Physics,Mechanics & Astronomy) 2025年第04期Mechanics & Astronomy) .卷 184-192页

作者： Cong Liu Mengwu huo huan Yang qing Li Yingjie Zhang Zhening Xiang Meng Wang Hai-hu Wen National Laboratory of Solid State Microstructures and Department of Physics Collaborative Innovation Center of Advanced MicrostructuresNanjing University Center for Neutron Science and Technology Guangdong Provincial Key Laboratory of Magnetoelectric Physics and DevicesSchool of PhysicsSun Yat-sen University

The discovery of superconductivity with Tcabove 77 K in pressurized La3Ni2O7has stimulated enormous interest in the field of unconventional superconductivity.A recent experiment in La2PrNi2O7has shown that the superconducting volume is close to100%.Because the superconductivity can only be achieved under high pressures,many intrinsic properties,such as the superconducting gaps,have not been measured *** report the Andreev reflection measurement of pressurized La3Ni2O7with the onset superconducting transition temperature at about 77 *** data reveal a clear peak of differential conductivity near zero bias in the tunneling spectrum;and appear also are some temperature-dependent steps that may reflect other superconducting *** based on the Blonder-Tinkham-Klapwijk model with multiple components can roughly fit the data,and the central peak can be fitted with a d-wave gap with a magnitude of about 9 meV,and other two s-wave gaps at about 16 and 26 *** latter two large gaps are determined from the enhanced steps of the differential conductivity,which may have other *** results reveal possible evidence of a sign-reversal gap and multi-component features of the superconducting gaps in the nickelate 327 systems.

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Effect of pyrite content on chalcopyrite flotation under different regrinding conditions

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 49-57页

作者： Zejun Wang qing Shi Guofan Zhang Yuxuan Zhu Binbin Li School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083China Key Laboratory of hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources Central South UniversityChangsha 410083China

This study aimed to investigate the effect of varying pyrite(Py)content on copper(Cu)in the presence of different regrinding conditions,which were altered using different types of grinding media:iron,ceramic balls,and their mixture,followed by flotation in the cleaner *** flotation performance of rough Cu concentrate can be improved by changing the regrinding conditions based on the Py *** electron microscopy,X-ray spectrometry,ethylenediaminetetraacetic acid disodium salt extraction,and X-ray photoelectron spectroscopy studies illustrated that when the Py content was high,the use of iron media in regrinding promoted the generation of hydrophilic Fe OOH on the surface of Py and improved the Cu *** ceramic medium with a low Py content prevented excessive Fe OOH from covering the surface of chalcopyrite(Cpy).Electrochemical studies further showed that the galvanic corrosion current of Cpy-Py increased with the addition of Py and became stronger with the participation of iron media.

关键词： chalcopyrite regrinding media pyrite galvanic corrosion flotation

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Evidence-based control of stress response on intraoperative physiological indexes and recovery of patients undergoing gastrointestinal surgery

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World Journal of Gastroenterology 2025年第8期31卷 72-81页

作者： Chen-Dong Yuan Bao-Zhu Zhou Ning-Yan Wang qing-qing Wan Zhen-Zhen hu Department of General Surgery The First Affiliated Hospital of Nanchang UniversityNanchang 330006Jiangxi ProvinceChina Department of Anesthesiology The First Affiliated Hospital of Nanchang UniversityNanchang 330006Jiangxi ProvinceChina

BACKGROUND Although the 2021 Chinese Clinical Practice Guidelines for Enhanced Recovery after Surgery(ERAS)provide recommendations for ERAS in gastrointestinal surgery,the clinical application of standard ERAS nursing models is challenging due to the variety of diseases involved in gastrointestinal surgery and the com-plex factors contributing to patient stress ***,stress responses are more severe in older adult ***,precision medicine is required to improve the quality of nursing care and promote postoperative recovery in gastrointestinal *** demonstrate nursing benefits through clinical *** This randomized clinical trial first established an evidence-based nursing ERAS protocol in older adult patients based on literature related to perioperative nursing measures for gastrointestinal surgery stress ***,392 older adult patients who underwent gastrointestinal surgery and were admitted to our hospital between December 2021 and June 2023 were categorized into two groups to receive evidence-based(study group)or conventional(control group)ERAS nursing models,*** physiological parameters during surgery and postoperative recovery indicators were compared between the *** Among 64 domestic and international studies,the stress responses of older adult patients mainly included emotional anxiety,sleep disorders,gastrointestinal discomfort,physical weakness,pain,and *** appropriate nursing interventions included comprehensive psychological counseling,pre-and postoperative nutritional support,temperature control,pain management,and rehabilitation *** with the control group,the study group showed lower heart rate,mean arterial pressure,blood glucose level,and adrenaline level;shorter duration of drainage tube placement,time to first flatus,time to first ambulation,and postoperative hospital stay;lower anxiety scores on postoperative day 3;and lower incidences of po

关键词： Older adult patients Gastrointestinal surgery Stress response Evidence-based nursing Enhanced recovery after surgery