ESTIMATES

作品数：721被引量：1236H指数：14
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相关领域：理学更多>>
相关作者：李巧张培培肖庭延杨守志阎金华更多>>
相关机构：天津财经学院西南林业大学淮北煤炭师范学院河北工业大学更多>>
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BRAKE ORBITS WITH MINIMAL PERIOD ESTIMATES OF FIRST-ORDER ANISOTROPIC HAMILTONIAN SYSTEMS
《Acta Mathematica Scientia》2025年第2期347-362,共16页Xiaofei ZHANG Chungen LIU 
supported by the NSFC(12301138);the Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi(2021L377);the Doctoral Scientific Research Foundation of Shanxi Datong University(2018-B-15);The second author’s work was supported by the NSFC(12171108).
In this paper,the problem of brake orbits with minimal period estimates are considered for the first-order Hamiltonian systems with anisotropic growth,i.e.,the Hamiltonian functions may have super-quadratic,sub-quadra...
关键词：Hamiltonian system anisotropic growth brake orbit Lo-index 
STRICHARTZ AND SMOOTHING ESTIMATES FOR DISPERSIVE SEMI-GROUP e^(-itP(D)) IN WEIGHTED L^(2) SPACES AND THEIR APPLICATIONS
《Acta Mathematica Scientia》2025年第2期401-415,共15页Jiecheng CHEN Shaolei RU Chenjing WU 
supported by the NSFC(12071437);the National Key R&D Program of China(2022YFA1005700).
Combining TT* argument and bilinear interpolation,this paper obtains the Strichartz and smoothing estimates of dispersive semigroup e^(-itP(D)) in weighted L^(2) spaces.Among other things,we recover the results in[1]....
关键词：Strichartz estimates smoothing estimates Morrey-Campanato class weighted L^(2)spaces WELL-POSEDNESS 
Magnitude,distribution and temporal trend of nitrous oxide emissions from China's natural soils over 1980–2022
《Science China Earth Sciences》2025年第4期1074-1085,共12页Songbai HONG Zimeng LI Mingsong TANG Fa LI Yitong YAO Yanzi YAN Mingzhu HE Xuhui WANG Hui ZENG Shilong PIAO 
supported by the National Natural Science Foundation of China(Grant Nos.42471116 and 41988101)。
Soils represent the largest contributor to global nitrous oxide(N_(2)O)emissions.However,current research efforts predominantly focus on N_(2)O emissions from agricultural soils,while studies on N_(2)O emissions from ...
关键词：Nitrous oxide Spatiotemporal dynamics Nitrogen deposition FORESTS Grasslands Data-driven estimates 
Estimates for stress concentration between two adjacent rigid inclusions in two-dimensional Stokes flow
《Science China Mathematics》2025年第3期577-614,共38页Haigang Li Longjuan Xu 
supported by National Natural Science Foundation of China (Grant Nos. 11971061 and 12301141);the Fundamental Research Funds for the Central Universities (Grant No. 2233200015)。
It is vitally important in material sciences and fluid mechanics to study the field enhancements in the narrow region between two inclusions. Complex fluids including particle suspensions usually result in complicated...
关键词：Stokes flow gradient estimates stress concentration 
C^(2)estimates for a class of degenerate k-Hessian equations with gradient terms on closed Hermitian manifolds
《纯粹数学与应用数学》2025年第1期25-45,共21页WU Hanqing XU Lu 
国家自然科学基金(12171143).
In this article,we are concerned with the C^(2)estimates for the k-convex solutions of a class of degenerate k-Hessian equations on closed Hermitian manifolds,whose function in the right-hand side is relevant to the u...
关键词：C^(2)estimates degenerate k-Hessian equation closed Hermitian manifold 
Spatiotemporal variations in sap flow in a larch plantation:sampling size for stand scale estimates
《Journal of Forestry Research》2025年第1期321-331,共11页Zebin Liu Songping Yu Lihong Xu Yanhui Wang Mengfei Wang Pengtao Yu 
supported by the Fundamental Research Funds of the Chinese Academy of Forestry(CAFYBB2020QB004);the National Natural Science Foundation of China(41971038,32171559,U20A2085,and U21A2005).
The sap flow method is widely used to estimate forest transpiration.However,at the individual tree level it has spatiotemporal variations due to the impacts of environmental conditions and spatial relationships among ...
关键词：Sap flow Environmental conditions COMPETITION MODELLING Optimal sample size 
Needs for rehabilitation in China:Estimates based on the Global Burden of Disease Study 1990–2019被引量：1
《Chinese Medical Journal》2025年第1期49-59,共11页Tian Tian Lin Zhu Qingzhen Fu Shiheng Tan Yukun Cao Ding Zhang Mingxue Wang Ting Zheng Lijing Gao Daria Volontovich Yongchen Wang Jinming Zhang Zhimei Jiang Hongbin Qiu Fan Wang Yashuang Zhao 
supported by the Special fund for the construction of High-level Universities and Characteristic Disciplines in Heilongjiang Province.
Background:As an essential part of health services,rehabilitation is of great significance to improve the health and quality of life of the whole population.Accelerating aging calls for a significant expansion of reha...
关键词：Global Burden of Disease Rehabilitation need Musculoskeletal disorders Sensory impairments PREDICTION China 
Estimates of the Charges and Size of the Three Types of Neutrinos
《Journal of High Energy Physics, Gravitation and Cosmology》2024年第4期1467-1469,共3页Ardeshir Irani 
It is the current belief of the Physics Community that neutrinos are bereft of Charge because of Conservation of Charge in decay processes such as Beta Decay and are point particles with no physical size or shape. It ...
关键词：Electron Neutrino Muon Neutrino Tau Neutrino Standard Model of Particle Physics Beta Decay Total Energy 
Sex differences in Alzheimer's disease:an urgent research venue to follow
《Neural Regeneration Research》2024年第12期2569-2570,共2页Raquel Jiménez-Herrera Ana Contreras Juan D.Navarro-López Lydia Jiménez-Díaz 
supported by grants PID2020-115823-GB100 funded by MCIN/AEI/10.13039/501100011033;SBPLY/21/180501/000150 funded by JCCM/ERDF-A way of making Europe;2022-GRIN-34354 grant by UCLM/ERDF intramural funding to LJD and JDNL;Margarita Salas Postdoctoral Research Fellow (2021-MS-20549)funded by European Union NextGenerationEU/PRTR。
Due to increasing life expectancy,the amount of people with dementia worldwide is expected to experience a substantial rise,with estimates indicating a growth from 55 million in 2019 to a staggering 139 million by the...
关键词：ALZHEIMER predominant ESTIMATES 
Global burden of thyroid cancer in 2022:Incidence and mortality estimates from GLOBOCAN
《Chinese Medical Journal》2024年第21期2567-2576,共10页Zhangyan Lyu Yu Zhang Chao Sheng Yubei Huang Qiang Zhang Kexin Chen 
supported by the National Key Research and Development Program of China(No.2021YFC2500400);National Natural Science Foundation of China(Nos.82172894,82204121,and 82073287);Natural Science Foundation of Tianjin(No.23JCQNJC00800);China Postdoctoral Science Foundation(No.2023M742617);Tianjin Key Medical Discipline(Specialty)Construction Project(No.TJYXZDXK-009A).
Background:Thyroid cancer(TC)is the most common malignancy of the endocrine system.This study aimed to assess the global distribution of TC incidence and mortality in 2022,as well as to predict the burden for the year...
关键词：Thyroid cancer INCIDENCE MORTALITY Trend analysis GLOBOCAN 2022 
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