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Characteristics and geological significance of the stress state of the lithosphere in the Qinghai-Tibetan Plateau and its neighboring areas

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Science China Earth Sciences 2024年第6期67卷 1836-1855页

作者： Qianwen ZHANG ya XU Wei CHU Shupeng {1. Key Lab of Petroleum Resource Research Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China

The present-day lithospheric stress state of the Qinghai-Tibetan Plateau and neighboring areas is controlled by both the lithosphere itself and the underlying *** other words,the stress is affected by the gravitational potential energy(GPE)difference caused by the change in the density distribution within the lithosphere and the drag force on the base of the lithosphere caused by mantle *** study of the lithospheric stress state plays an important role in further understanding the dynamic background and mechanism for the evolution of the Qinghai-Tibetan *** this study,the Crust1.0 crustal density model combined with the S40RTS mantle shear wave velocity variation model was used to calculate the *** EGM2008gravity field model was used to calculate the drag force from mantle convection at the base of the *** lithospheric and joint stress fields of the two sources were obtained by solving the force balance under the thin sheet *** way,we could comprehensively analyze the characteristics of the stress state within the *** regions were classified according to the GPE stress field,mantle drag force stress field,the relative magnitude of the two stress fields,and correlation between the two stress fields and surface *** lithospheric stress fields of the Tarim Basin and other stable blocks are mainly controlled by the GPE *** lithospheric stress field in the collision zone between the Indian Plate and the QinghaiTibetan Plateau is predominantly controlled by the deep mantle drag *** lithospheric stress field in the interior of the Plateau is controlled by both GPE and mantle *** correlation between the lithospheric stress field and surface deformation at the southeast margin of the Qinghai-Tibetan Plateau is *** is hypothesized that the presence of lower crustal flow with lower effective viscosity leads to crust-mantle decoupling,and the mantle drag force has a weaker influe

关键词： Qinghai-Tibetan Plateau Gravitational potential energy Mantle convection Lithospheric deviatoric stress field GPS strain rate field

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Weighted Composition Operators That Preserve Frames On Weighted Hardy Spaces

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Acta Mathematica Sinica,English Series 2024年第7期40卷 1645-1654页

作者： ya Li Dong Rui Liu Guo Xiang {1. School of Mathematical Sciences and LPMC Nankai UniversityTianjin300071P.R.China School of Statistics and Mathematics Zhongnan University of Economics and LawWuhan430073P.R.China

In this paper, we characterize weighted composition operators that preserve frames on the weighted Hardy spaces in the unit disk. In particular, we obtain the symbol properties of the bounded invertible weighted composition operators. Moreover, we establish the equivalence between bounded invertible operators and frame-preserving operators. Furthermore, we show that weighted composition operator preserves frames if and only if it preserves the Riesz bases property. Additionally,we investigate the weighted composition operators that preserve tight or normalized tight frames on the Dirichlet space.

关键词： Weighted composition operators Weighted Hardy spaces frames invertible

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Structural transformation from Waugh-type to Keggin-type polyoxomolybdate-based crystalline material for photo/electrocatalysis

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Rare Metals 2024年第5期43卷 2241-2250页

作者： Pei-Sen Wang Zi-Tong Wang ya-ya Tan Peng Chen Xue-Cheng Zhang lu-Nan Zhang Yong-Ge Wei lu-Bin Ni School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225002China Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education Department of ChemistryTsinghua UniversityBeijing 100084China State Key Laboratory of Natural and Biomimetic Drugs Peking UniversityBeijing100191China

An inorganicDorganic hybrid crystalline material(SiMo_(1.)O_(40))[Cu(2,2'-bipy)_(2)]_(2)·2H_(2)O(Complex 1.2,2'-bipy=2,2'-bipyridine)was synthesized for the first time by using 2,2'-bipy and transition metal copper to convert Waugh-type polyoxometalate[MnMo_(9)O_(3)_(2)]_(6-)into a Keggin polyoxometalate structure[SiMo_(1.)O_(40)]^(4-)under hydrothermal conditions in glass *** crystal tests and a series of characterizations were carried out on Complex *** structure of Complex 1.is composed of[SiMo_(1.)O_(40)]^(4-)and[Cu^(Ⅱ)(2,2'-bipy)_(2)]^(2+).The five-coordinated Cu is connected to two 2,2'-bipy through CuDN bonds,forming an approximately square ***,Complex 1.exhibited good photocatalytic performance for methylene blue degradation and electrocatalytic nitrite reduction properties simultaneously.

关键词： Polyoxometalates Inorganic-organic hybrid materials Photocatalytic Electrocatalytic

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Type Synthesis of Self-Alignment Parallel Ankle Rehabilitation Robot with Suitable Passive Degrees of Freedom

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Chinese Journal of Mechanical Engineering 2024年第1期37卷 160-175页

作者： ya Liu Wenjuan {1. Dabao Fan Weijian Tan Bo Hu Daxing Zeng School of Mechanical Engineering Yanshan UniversityQinhuangdao 066004China School of Mechanical Engineering Dongguan University of TechnologyDongguan 523808China Dongguan Engineering Technology Research Center for Parallel Robot Dongguan 523808China The DGUT Innovation Center of Robotics and Intelligent Equipment Dongguan 523808China

The current parallel ankle rehabilitation robot(ARR)suffers from the problem of difficult real-time alignment of the human-robot joint center of rotation,which may lead to secondary injuries to the *** study investigates type synthesis of a parallel self-alignment ankle rehabilitation robot(PSAARR)based on the kinematic characteristics of ankle joint rotation center drift from the perspective of introducing"suitable passive degrees of freedom(DOF)"with a suitable number and ***,the self-alignment principle of parallel ARR was proposed by deriving conditions for transforming a human-robot closed chain(HRCC)formed by an ARR and human body into a kinematic suitable constrained system and introducing conditions of"decoupled"and"less limb".Second,the relationship between the self-alignment principle and actuation wrenches(twists)of PSAARR was analyzed with the velocity Jacobian matrix as a"bridge".Subsequently,the type synthesis conditions of PSAARR were ***,a PSAARR synthesis method was proposed based on the screw theory and type of PSAARR synthesis ***,an HRCC kinematic model was established to verify the self-alignment capability of the *** this study,93 types of PSAARR limb structures were synthesized and the self-alignment capability of a human-robot joint axis was verified through kinematic analysis,which provides a theoretical basis for the design of such an ARR.

关键词： Ankle rehabilitation robot Self-alignment Parallel mechanism Type synthesis Screw theory

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Dynamic lithium-compensation mechanism for densification of garnet-type Li_(7)La_(3)Zr_(2)O_(1.)electrolyte by Li_(2)O atmosphere buffer pair

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Nano Research 2024年第7期17卷 6184-6191页

作者： Chujun Zheng ya Chen Haoxin Dong yan lu Jun Jin Zhaoyin Wen CAS Key Laboratory of Materials for Energy Conversion Shanghai Institute of CeramicsChinese Academy of ScienceShanghai 200050China State Key Lab High Performance Ceram and Superfine Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

Solid-state lithium metal batteries are one of the most promising options for next-generation batteries pursuing high-energy density and ***,the inevitable volatilization of lithium compounds during sintering leads to low relative density and low ionic conductivity of solid-state ***,the dynamic lithium-compensation mechanism is proposed to facilitate the densification of Ta-substituted garnet-type electrolyte(Li_(6.5)La_(3)Zr_(1.5)Ta_(0.5)O_(1.)(LLZT))through the reversible manipulating of Li_(2)O ***_(2)ZrO_(3)is used as mother powder additive,which reacts with Li_(2)O in sintering atmosphere and forms Li_(6)Zr_(2)O_(7).Li_(2)ZrO_(3)/Li_(6)Zr_(2)O_(7)buffer pair manipulates the sintering Li_(2)O atmosphere,which is vital for LLZT,within the Li_(2)O partial pressure range corresponding to Li_(2)ZrO_(3)and Li_(6)Zr_(2)O_(7).Furthermore,the reversibility mechanism of buffer pair for Li_(2)O absorption and release is *** obtained LLZT exhibits a relative density of over 96%and an ionic conductivity exceeding 7×1.^(−4)S·cm^(−1.with no abnormal grain *** symmetric cell demonstrates an excellent lithium dendrite suppressing ability(stable cycling at a current density of 0.3 mA·cm^(−2)for over 1.00 h).Such dynamic lithium-compensation strategy has been successfully applied in atmosphere manipulation of LLZT sintering process,which reduces the dependence of LLZT on the Li_(2)O atmosphere,making it conducive to large-scale preparation of electrolyte ceramics.

关键词： solid-state batteries garnet-type electrolyte high-density electrolyte dynamic lithium-compensation buffer pair

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Analysis of the one-decoy-state SARG04 quantum cryptography protocol in the presence of afterpulse effects

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Communications in Theoretical Physics 2024年第6期76卷 66-71页

作者： Hu Nian ya-Feng Nie Chun-Mei Zhang Liang-Liang {1. Key Laboratory of Optoelectronic Technology of Jiangsu Province School of Physical Science and TechnologyNanjing Normal UniversityNanjing 210023China Institute of Quantum Information and Technology Nanjing University of Posts and TelecommunicationsNanjing 210003China Hefei National Laboratory Hefei 230088China

The SARG04 quantum key distribution protocol can offer greater robustness against photon number splitting attacks than the BB84 protocol that is implemented with weak *** this paper,we propose a tight key analysis for the SARG04 protocol,by considering the one-decoy method and investigating its performance under the influence of a detector *** results demonstrate that an increase in block size leads to a slight increase in both the secure key rate and the maximum transmission ***,the detector afterpulse plays a crucial role in practical applications and has a more pronounced effect on the SARG04 protocol compared to the BB84 protocol.

关键词： Quantum key distribution SARG04 protocol one decoy afterpulse

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Association between childhood obesity and gut microbiota:1.S rRNA gene sequencing-based cohort study

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World Journal of Gastroenterology 2024年第16期30卷 2249-2257页

作者： Xu-Ming Li Qing Lv ya-Jun Chen {1.-Biao yan Xin Xiong Laboratory Department Nanjing Medical University Affiliated Obstetrics and Gynecology Hospital(Nanjing Maternal and Child Health Hospital)Nanjing 210004Jiangsu ProvinceChina Department of Pediatrics Shenzhen University General HospitalShenzhen 518055Guangdong ProvinceChina Department of Inspection Division Women’s Hospital of Nanjing Medical University(Nanjing Maternity and Child Health Care Hospital)Nanjing 210004Jiangsu ProvinceChina Department of Pediatrics Women’s Hospital of Nanjing Medical University(Nanjing Maternity and Child Health Care Hospital)Nanjing 210004Jiangsu ProvinceChina Department of Neonatology Chenzhou First People’s HospitalChenzhou 423000Hunan ProvinceChina

BACKGROUND This study aimed to identify characteristic gut genera in obese and normal-weight children(8-1. years old)using 1.S rDNA *** research aimed to provide insights for mechanistic studies and prevention strategies for childhood *** normal-weight and thirty age-and sex-matched obese children were *** and body measurements were collected,and fecal samples underwent 1.S rDNA *** differences in body mass index(BMI)and body-fat percentage were observed between the *** of gut microbiota diversity revealed lowerα-diversity in obese *** in gut microbiota composition were found between the two *** and Firmicutes were more abundant in the obese group,while Bacteroides and Sanguibacteroides were more prevalent in the control *** To identify the characteristic gut genera in obese and normal-weight children(8-1.-year-old)using 1.S rDNA sequencing,and provide a basis for subsequent mechanistic studies and prevention strategies for childhood *** Thirty each normal-weight,1.1.matched for age and sex,and obese children,with an obese status from 2020 to 2022,were included in the control and obese groups,*** information was collected through questionnaires and body measurements were obtained from both obese and normal-weight *** samples were collected from both groups and subjected to 1.S rDNA sequencing using an Illumina MiSeq sequencing platform for gut microbiota diversity *** Significant differences in BMI and body-fat percentage were observed between the two *** Ace and Chao1.indices were significantly lower in the obese group than those in the control group,whereas differences were not significant in the Shannon and Simpson ***-Wallis tests indicated significant differences in unweighted and weighted UniFrac distances between the gut microbiota of normal-weight and obese children(P1.,suggest

关键词： Childhood obesity Gut microbiota 1.S rDNA sequencing Diversity analysis Genus identification Body mass index

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Copper-based electro-catalytic nitrate reduction to ammonia from water:Mechanism,preparation,and research directions

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Environmental Science and Ecotechnology 2024年第4期20卷 42-62页

作者： Jinshan Wei Yi Li Hexing Lin Xihui lu Chucheng Zhou {1.-yun Li Shenzhen Key Laboratory of Special Functional Materials&Shenzhen Engineering Laboratory for Advance Technology of Ceramics College of Materials Science and EngineeringShenzhen UniversityShenzhen518060PR China

Global water bodies are increasingly imperiled by nitrate pollution,primarily originating from industrial waste,agricultural runoffs,and urban *** escalating environmental crisis challenges traditional water treatment paradigms and necessitates innovative ***-catalysis,especially utilizing copper-based catalysts,known for their efficiency,cost-effectiveness,and eco-friendliness,offer a promising avenue for the electro-catalytic reduction of nitrate to *** this review,we systematically consolidate current research on diverse copper-based catalysts,including pure Cu,Cu alloys,oxides,single-atom entities,and ***,we assess their catalytic performance,operational mechanisms,and future research directions to find effective,long-term solutions to water purification and ammonia ***-catalysis technology shows the potential in mitigating nitrate pollution and has strategic importance in sustainable environmental *** to the application,challenges regarding complexity of the real water,the scale-up of the commerical catalysts,and the efficient collection of produced NH3 are still *** reseraches of catalyst specially on long term stability and in situ mechanisms are proposed.

关键词： Water treatment Nitrate removal Electrocatalysis Cu catalysts Ammonia synthesis

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Patterns and trends in asthma incidence rates in main Asian and Western countries and their prediction to 2030

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Chinese Medical Journal Pulmonary and Critical Care Medicine 2024年第3期2卷 188-196页

作者： yang Zheng Lei Lan Gan {1. ya-dong Gao Department of Allergy The First Affiliated HospitalSchool of MedicineZhejiang UniversityHangzhouZhejiang 310003China State Key Laboratory for Diagnosis and Treatment of Infectious Diseases National Clinical Research Center for Infectious DiseasesCollaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesThe First Affiliated HospitalSchool of MedicineZhejiang UniversityHangzhouZhejiang 310003China

Background:The urbanization and industrialization of East and Southeast Asia in decades past has significantly altered living environment and lifestyles,which may have complicated effects on the burden of *** aim to examine the patterns and trends of asthma incidence rates in six major East and Southeast Asian countries as well as five major Western countries,and predict the numbers of new cases attributed to various ***:Data on annual asthma incident cases and corresponding population by age group were drawn from 6 major selected East and Southeast Asian countries available in the Global Burden of Disease database,including China,Japan,Korea,Singapore,Philippines,and *** also collected data of five major high-income Western countries for comparative *** separate Bayesian age–period–cohort models,representing pre-COVID(model 1.and post-COVID(model 2)scenarios,were constructed to predict the asthma incidence until ***:In model 1.the age-standardized incidence rate of asthma will be the highest in the US(1.70.07 per 1.0,000,95%confidence interval[CI]533.05–4455.03),while the lowest incidence rate will be found in Singapore(296.72 per 1.0,000,95%CI 1.5.1.–899.55)in *** 1.90 and 2030,the incidence of asthma is projected to increase in China and Thailand,with average annual percentages changes(AAPC)ranging from 0.70%to 1.80%.The remaining four Asian countries show a declining trend,with AAPC ranging from-0.51.to-2.00%.In model 2,the US is estimated to have the highest age-standardized incidence rate(902.71.per 1.0,000,95%CI 375.44–2277.24),while Korea will have the lowest incidence rate(1.6.46 per 1.0,000,95%CI 58.77–51..09)in 2030.A decrease in asthma incidence was observed in all countries with the overall AAPC ranging from-3.42%to-0.42%.Notably,a turning point was found around 2020,after which the incidence rates dropped ***:Pandemic-related factors may temporarily lower the incidence of asthma

关键词： Asthma East and Southeast Asia Bayesian age-period-cohort model Prediction Coronavirus disease 201.(COVID-1.)

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Association between heat and upper urinary tract stones morbidity and medical costs: A study in the subtropical humid climate zone

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Advances in Climate Change Research 2024年第4期15卷 717-724页

作者： Chen-lu {1.NG Jun-Zhe BAO Peng BI {1.-Dong ZHANG Chao-Ming TAN Kai CHEN College of Public Health Zhengzhou UniversityZhengzhou 450001China School of Public Health The University of AdelaideAdelaide 5000Australia Department of Andrology The First Affliated Hospital of Sun Yat-sen UniversityGuangzhou 510080China Nanjing Social Insurance Management Center Nanjing 210008China Department of Environmental Health Sciences Yale UniversityNew Haven 06520USA yale Center on Climate Change and Health Yale UniversityNew Haven 06520USA

Urolithiasis is a heat-specific *** heat-related urolithiasis susceptibility subtypes,economic burden,and modifying factors could assist governments in targeting interventions to reduce the heat-related health risks of urolithiasis *** collected data on 23,492 patients with upper urinary tract stones(main subtypes of urolithiasis)from 201. to 201. in Nanjing,*** adopted generalized additive quasi-Poisson models to examine the associations between daily mean temperatures and morbidity of upper urinary tract stones,while generalized additive Gaussian models were used to explore the relationships between temperatures and log-transformed medical *** examined the modification effects of disease subtypes(kidney and ureteral calculus),sex,and age through stratified analyses and the modif-cation effects of other meteorological factors by introducing interaction terms in the *** found that short-term summer heat exposure has a statistically significant effect on ureteral calculus morbidity but not on kidney calculus *** ureter calculus,a 1. temperature increase was associated with a 4.36%(95%confidence interval[CI]:1.94%,6.83%)increase in daily hospitalization and a 5.44%(95%CI:2.71.,8.25%)increase in daily medical *** attributable fraction associated with heat(greater than the median value of daily mean temperature,26.8℃)was 7.85%(95%empirical confidence interval[eCI]:3.64%,1..44%)for hospitalization and 9.36%(95%eCI:4.91.,1..1.%)for medical *** effects of heat on ureter calculus morbidity were significantly higher among the males and those with high sunshine duration than females and those with low sunshine ***-term summer heat exposure was associated with increased morbidity and medical costs of ureteral *** government organizations should take effective intervention measures,including community health education,to reduce the health hazards and economic losses caused by heat.

关键词： Heat Upper urinary tract stones Economic burden Modification effects

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