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Correlation between anxiety, depression, and social stress in young patients with thoracolumbar spine fractures

World Journal of Psychiatry 2025年第1期15卷 83-92页

作者： bo Wang Da Shi Yin-Di Sun bo dong Joint Ward of Orthopedics Department of TCM Honghui HospitalXi'an Jiaotong UniversityXi’an 710054Shaanxi ProvinceChina Pain Ward of Orthopedics Department of TCM Honghui HospitalXi'an Jiaotong UniversityXi’an 710054Shaanxi ProvinceChina

BACKGROUND Traumatic injuries,such as falling,car accidents,and crushing mostly cause spinal fractures in young and middle-aged people,and>50%of them are thoracolumbar *** kind of fracture is easily combined with serious injuries to peripheral nerves and soft tissues,which causes paralysis of the lower limbs if there is no timely rehabilitation *** patients with thoracolumbar fractures find it difficult to recover after the operation,and they are prone to depression,low self-esteem,and other negative *** To investigate the association between anxiety,depression,and social stress in young patients with thoracolumbar spine fractures and the effect on rehabilitation *** This study retrospectively analyzed 100 patients admitted to the orthopedic department of Honghui Hospital,Xi’an Jiaotong University who underwent thoracolumbar spine fracture surgery from January 2022 to June *** general data of the patients were assessed with the Hamilton anxiety scale(HAMA),Hamilton depression scale(HAMD),life events scale,and social support rating scale(SSRS)to identify the correlation between anxiety,depression scores,and social stress and social *** Japanese Orthopedic Association(JOA)was utilized to evaluate the rehabilitation outcomes of the patients and to analyze the effects of anxiety and depression scores on *** According to the scores of HAMD and HAMA in all patients,the prevalence of depression in patients was 39%(39/100),and the prevalence of anxiety was 49%(49/100).Patients were categorized into non-depression(n=61)and depression(n=39),non-anxiety(n=51),and anxiety(n=49)*** significant differences in gender,occupation,Pittsburgh Sleep Quality Index(PSQI)score,and monthly family income were observed between the non-depression and depression groups(P<0.05).A significant difference in occupation and PSQI score was found between the non-anxiety and anxiety *** depression(r=0

关键词： Patients with thoracolumbar fractures Anxiety Depression Social pressure Social support

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Efficiently Counting Affine Roots of Mixed Trigonometric Polynomial Systems

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Journal of Systems Science & Complexity 2017年第4期30卷 967-982页

作者： JIAO Libin dong bo YU bo School of Science Dalian University of Technology Panjin CampusPanjin 124221China School of Mathematical Sciences Dalian University of TechnologyDalian 116024China

Estimating the number of isolated roots of a polynomial system is not only a fundamental study theme in algebraic geometry but also an important subproblem of homotopy methods for solving polynomial systems. For the mixed trigonometric polynomial systems, which are more general than polynomial systems and rather frequently occur in many applications, the classical B6zout number and the multihomogeneous Bezout number are the best known upper bounds on the number of isolated roots. However, for the deficient mixed trigonometric polynomial systems, these two upper bounds are far greater than the actual number of isolated roots. The BKK bound is known as the most accurate upper bound on the number of isolated roots of a polynomial system. However, the extension of the definition of the BKK bound allowing it to treat mixed trigonometric polynomial systems is very difficult due to the existence of sine and cosine functions. In this paper, two new upper bounds on the number of isolated roots of a mixed trigonometric polynomial system are defined and the corresponding efficient algorithms for calculating them are presented. Numerical tests are also given to show the accuracy of these two definitions, and numerically prove they can provide tighter upper bounds on the number of isolated roots of a mixed trigonometric polynomial system than the existing upper bounds, and also the authors compare the computational time for calculating these two upper bounds.

关键词： BKK bound homotopy continuation method mixed trigonometric polynomial system mixed volume polynomial system upper bound.

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Time Decay Rates of the Isotropic Non-Newtonian Flows in R^n

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Acta Mathematicae Applicatae Sinica 2007年第1期23卷 99-106页

作者： bo-Qing dong School of Mathematical Sciences Nankai University Tianjin 300071 China

This paper is concerned with time decay rates for weak solutions to a class system of isotropic incompressible non-Newtonian fluid motion in R^n. With the use of the spectral decomposition methods of Stokes operator, the optimal decay estimates of weak solutions in L^2 norm are derived under the different conditions on the initial velocity. Moreover, the error estimates of the difference between non-Newtonian flow and Navier-Stokes flow are also investigated.

关键词： L^2 decay spectral decomposition non-Newtonian flows

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Coating mechanism of nano-TiO_2 films on the surface of ultra-fine calcined coal kaolin particles

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International Journal of Minerals,Metallurgy and Materials 2011年第4期18卷 487-493页

作者： Hai Lin Ying-bo dong School of Civil and Environmental Engineering University of Science and Technology Beijing Beijing 100083 China

A new type of mineral composite was made by calcined coal *** interaction mechanism of an inorganic modification reagent TiOSO4 with the surface of ultra-fine calcined coal kaolin particles（substrate） was studied by X-ray photoelectron *** results show that chemisorption exists in the phase boundary between the modification agent and the substrate surface,while physical adsorption occurs on the modification layers of hydrate titanium *** interaction force was calculated and analyzed according to DLVO theory between ultra-fine calcined coal kaolin particles and hydrate titanium dioxide nano-particles in the modification *** is shown that the both electrostatic force and van der Waals force are attractive,and the coacervation between ultra-fine calcined coal kaolin particles and hydrate titanium dioxide nano-particles leads to the coating of hydrate titanium dioxide on the surface of ultra-fine calcined coal kaolin particles.

关键词： calcined coal kaolin titanium dioxide coatings modification mechanisms

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Numerical Investigations on the Resonance Errors of Multiscale Discontinuous Galerkin Methods for One-Dimensional Stationary Schrödinger Equation

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Communications on Applied Mathematics and Computation 2024年第1期6卷 311-324页

作者： bo dong Wei Wang Department of Mathematics University of Massachusetts DartmouthNorth DartmouthMA02747USA Department of Mathematics and Statistics Florida International UniversityMiamiFL33199USA

In this paper,numerical experiments are carried out to investigate the impact of penalty parameters in the numerical traces on the resonance errors of high-order multiscale discontinuous Galerkin(DG)methods(dong et *** J Sci Comput 66:321–345,2016;dong and Wang in J Comput Appl Math 380:1–11,2020)for a one-dimensional stationary Schrödinger *** work showed that penalty parameters were required to be positive in error analysis,but the methods with zero penalty parameters worked fine in numerical simulations on coarse *** this work,by performing extensive numerical experiments,we discover that zero penalty parameters lead to resonance errors in the multiscale DG methods,and taking positive penalty parameters can effectively reduce resonance errors and make the matrix in the global linear system have better condition numbers.

关键词： Discontinuous Galerkin(DG)method Multiscale method Resonance errors One-dimensional Schrödinger equation

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Leaching behavior of V,Pb,Cd,Cr,and As from stone coal waste rock with different particle sizes

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International Journal of Minerals,Metallurgy and Materials 2018年第8期25卷 861-870页

作者： Ying-bo dong Yue Liu Hai Lin School of Energy and Environmental Engineering University of Science and Technology BeijingBeijing 100083China Beijing Key Laboratory on Resource-oriented Treatment of Industrial Pollutants Beijing 100083China

This paper investigates the leaching behavior of heavy metals(V,Pb,Cd,Cr,and As) from stone coal waste rocks with various particle sizes using dynamic leaching *** results show that the dissolved concentrations of V and As initially increased and then slightly decreased as time progressed and that the dissolved concentrations of Pb,Cd,and Cr were high in the early stage before *** particle size of the stone coal waste rocks strongly influenced the heavy metal concentration in the leaching *** effects of the particle size of the stone coal waste rocks on the dissolved concentrations of V,Pb,and As decreased in the order fine fraction > medium fraction > coarse fraction,and the effects of particle size on the dissolved concentrations of Cr and Cd decreased in the order medium fraction > coarse fraction > fine fraction and coarse fraction > medium fraction > fine fraction,*** quantities of heavy metals dissolved from the stone coal waste rock with fine particle sizes were observed to decrease in the order V(17104.36 μg/kg) > As(609.41 μg/kg) > Pb(469.24 μg/kg) > Cr(56.35 μg/kg) > Cd(27.52 μg/kg),and the dissolution rates decreased in the order As(2.96%) > Pb(0.93%) > V(0.35%) > Cd(0.25%) > Cr(0.01%).The specific surface area,pore size of the stone coal waste rocks,and chemical forms of heavy metals also influenced the release of heavy metals from the stone coal waste *** analysis showed that the dissolution of heavy metals fundamentally agreed with the rate equation controlled by the shrinking core *** results of this study are expected to serve as a reference for the evaluation of heavy metals contamination from stone coal waste rocks.

关键词： stone coal waste rocks heavy metal leaching behavior dynamic leaching test particle size

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Conductive Au nanowires regulated by silk fibroin nanofibers

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Frontiers of Materials Science 2014年第1期8卷 102-105页

作者： bo-Ju dong Qiang LU National Engineering Laboratory for Modern Silk College of Textile and Clothing Engineering Soochow University Suzhou 215123 China

Conductive Au-biopolymer composites have promising applications in tissue engineering such as nerve tissue regeneration. In this study, silk fibroin nanofibers were formed in aqueous solution by regulating silk self-assembly process and then used as template for Au nanowire fabrication. We performed the synthesis of Au seeds by repeating the seeding cycles for several times in order to increase the density of Au seeds on the nanofibers. After electroless plating, densely decorated Au seeds grew into irregularly shaped particles following silk nanofiber to fill the gaps between particles and finally form uniform continuous nanowires. The conductive property of the Au-silk fibroin nanowires was studied with current-voltage （I-V） measurement. A typical ohmic behavior was observed, which highlighted their potential applications in nerve tissue regeneration.

关键词： silk Au nanowire electrical conductivity biological device

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Preparation of calcium carbonate particles coated with titanium dioxide

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International Journal of Minerals,Metallurgy and Materials 2009年第5期16卷 592-597页

作者： Hai Lin Ying-bo dong Le-yong Jiang School of Civil and Environmental Engineering University of Science and Technology Beijing Beijing 100083 China

The preparation of a new mineral composite material, calcium carbonate particles coated with titanium dioxide, was studied. The mechanism of the preparation process was proposed. The new mineral composite material was made by the mechanoehemieal method under the optimum condition that the mass ratio of calcium carbonate particles to titanium dioxide was 6.5：3.5. The mass ratios of two different types of titanium dioxide （anatase to rutile） and grinding media to grinded materials were 8：2 and 4：1 respectively, and the modified density was 60%. Under this condition, the new material was capable of forming after 120-min modification. The hiding power and oil absorption of this new material were 29.12 g/m^2 and 23.30%, respectively. The results show that the modification is based on surface hydroxylation. After coating with titanium dioxide, the hiding power of calcium carbonate can be improved greatly. The new mineral composite materials can be used as the substitute for titanium dioxide.

关键词： calcium carbonate mechano-chemical process titanium dioxide film hydroxylation

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Multi-Objective Structural Optimization of Wind Turbine Tower Using Nondominated Sorting Genetic Algorithm

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Journal of Beijing Institute of Technology 2020年第3期29卷 417-424页

作者： Yuqiao Zheng Lu Zhang Fugang dong bo dong School of Mechanical and Electronic Engineering Lanzhou University of TechnologyLanzhou 730050China

A multi-objective optimization process for wind turbine steel towers is described in present *** objective functions are tower top deformation and *** tower's height,radius and thickness are considered as design *** mathematical relationships between objective functions and variables were predicted by adopting a response surface methodology(RSM).Furthermore,the multi-objective non-dominated sorting genetic algorithm-II(NSGA-II)is adopted to optimize the tower structure to achieve accurate results with the minimum top deformation and total mass.A case study on a 2MW wind turbine tower optimization is given,which computes the desired tower structure *** results are compared with the original tower:a reduction of tower top deformation reduction by about 16.5%and a reduction of a mass by about 1.5%could be achieved for such an optimization process.

关键词： wind turbine tower statics analysis experiment design multi-objective optimization

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Special topic on EvoDevo:emerging models and perspectives

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Marine Life Science & Technology 2023年第4期5卷 431-434页

作者： Hongan Long bo dong MoE Key Laboratory of Evolution and Marine Biodiversity Institute of Evolution and Marine BiodiversityOcean University of ChinaQingdao 266003China

Communication between developmental and evolutionary scientists has historically been a challenge,with their respective foci being molecular mechanisms during the development of an individual and long-term shifts in allele frequency in ***,uniting these perspectives provides a better understanding of biological *** Haeckel’s biogenetic argument that,“ontogeny recapitulates phylogeny,”offers us with an early glimpse at how useful such a synthesis of evolution and development(EvoDevo)can be.

关键词： functions. argument synthesis

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