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Comparison of Surgical Outcomes in Thoracolumbar Fractures Operated with Varying Lengths of Posterior Constructs-Short Segment Versus Long Segment Fixation

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Comparison of Surgical Outcomes in Thoracolumbar Fractures O...

作者： Dinesh kumer b.k 吉林大学

学位级别：硕士

Objective: Surgical treatment of thoracolumbar fractures is very controversial. The optimalgoals of surgical treatment in thoracolumbar burst fractures are decompression of neural element,restoration of vertebral height and alignment, stabilization, decrease deformity and earlymobilization in order to acquire maximal recovery from neurological and functional *** general agreement on the goals of surgical treatment, considerable controversy anddebates exist in the choice of operative techniques. It is clear that the operative managementwith internal fixation has known advantages of stability, early mobilization and rehabilitation,neurological improvement, spinal alignment and decreased deformity. Posterior instrumentationtechnique is most frequently practiced;however, the number of levels to be instrumented stillremains a matter of debate and disagreement. We want to compare the surgical outcomes ofshort segment and long segment posterior fixation for thoracolumbar burst fractures in order toprovide a theoretical basis for the better treatment of thoracolumbar fractures. Method: From Sept.2008to April2011, a total of39patients who had a single levelthoracolumbar burst fracture between T10to L3and classified as a burst fracture according toMcAfee classification or type A3fracture according to AO/Magerl classification were *** patients were managed by posterior instrumentation alone. The patient’s case notes,operation records, pre-op, post-op and follow up radiographs were reviewed. Patients weredivided into2groups depending upon the number and level of vertebra instrumented. Group Icomprised of24patients operated by short segment posterior fixation （SSPF）, i.e;one vertebracephalad and one caudad to the fractured vertebra and Group II comprised of15patientsoperated by long segment posterior fixation （LSPF）, i.e;two vertebrae cephalad and two caudadto the fractured vertebra. The mean follow up period was13.2months ranging from8months to19months.

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《语言磨蚀理论研究》介绍

当代语言学 2010年第1期12卷 84-87页

作者： b.kpke 韩大伟宋葳燕山大学外国语学院英语系

语言磨蚀（attrition，简称语蚀），即语言习得的逆过程，指双语或多语使用者由于某种语言使用的减少或停止，其运用语言的能力随着时间的推移而逐渐减退。最早将语言磨蚀的概念引入语言学研究的是Lambert。他在1980年于美国宾夕法尼亚... 详细信息

语言磨蚀（attrition，简称语蚀），即语言习得的逆过程，指双语或多语使用者由于某种语言使用的减少或停止，其运用语言的能力随着时间的推移而逐渐减退。最早将语言磨蚀的概念引入语言学研究的是Lambert。他在1980年于美国宾夕法尼亚大学召开的首届语言磨蚀研讨会上就使用了attrition一词（Lambert and Freed 1982）。

关键词：语言习得磨蚀宾夕法尼亚大学语言学研究语言使用概念引入使用者简称

Neuroinflammation revisited through the microglial lens

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Neural Regeneration Research 2025年第7期20卷 1989-1990页

作者： Renato Socodato João b.Relvas Institute of Research and Innovation in Health(i3S)and Institute for Molecular and Cell biology(IbMC) University of PortoPortoPortugal Department of biomedicine Faculty of Medicine of the University of Porto(FMUP)PortoPortugal

Neuroimmunology is emerging as a pivotal field,shedding light on the intricate dialogues between the central nervous system(CNS)and the immune *** exploration is particularly significant in understanding microglia,the CNS’s innate immune cells,beyond the conventional conflation of“neuroinflammation”and“microglial activation.”This conflation has clouded the true complexity of these processes,potentially stalling scientific progress and the development of new *** challenge the long-standing perspectives that have oversimplified these interactions,advocating for a deeper exploration of the dynamic relationship between neuroinflammation and microglial *** dissecting specific molecular pathways,we aim to illuminate their elaborate roles in neuroinflammatory responses,especially in the context of Alzheimer’s disease(AD).Here,neuroinflammation is not merely a passive observer or a direct antagonist but a complex agent in the disease’s *** article calls for a significant paradigm shift towards an integrative,multi-omics approach to *** such a comprehensive framework is crucial for advancing our understanding of neuroinflammatory conditions and paving the way for targeted therapeutic strategies for brain diseases.

关键词： inflammation simplified activation

Synthesis, spectroscopic characterization, and thermal decomposition kinetics of some lanthanide(III) nitrate complexes of 2-(N-o-hydroxyacetophenone) amino-3-carboxyethyl-4,5,6,7-tetrahydrobenzo[b]thiophene

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Journal of Rare Earths 2008年第4期26卷 463-468页

作者： k. Mohanan M. Thankamony b. Sindhu kumari Department of Chemistry University of Kerala Kariavattom Campus Trivandrum-695 581. Kerala India

Complexes of La（Ⅲ）, Ce（Ⅲ）, Pr（Ⅲ）, Nd（Ⅲ）, Sm（Ⅲ）, Eu（Ⅲ）, Gd（Ⅲ）, Dy（Ⅲ）, Yb（Ⅲ）, and Lu0ID with 2-（N-o- hydroxyacetophenone）amino-3-carboxyethyl-4,5,6,7-tetrahydrobenzo[b]thiophene （HAAT） formed by the condensation of o-hydroxyacetophenone and 2-amino-3-carboxyethyl-4,5,6,7-tetrahydrobenzo[b]thiophene were synthesized and characterized on the basis of elemental analyses, molar conductance measurements, magnetic susceptibility data, UV-Visible, IR, and NMR spectral studies. The spectral data revealed that the ligand acted as a neutral tridentate coordinating to the metal ion through ONO donor sequence. A coordination number nine was proposed for the complexes. Thermal decomposition studies of the ligand and lanthanum（Ⅲ） complex were carried out and kinetic parameters were calculated using Coats-Redfem equation. The decomposition reactions followed random nucleation mechanism with one nucleus on each particle.

关键词： lanthanides o-hydroxyacetophenone molar conductance magnetic susceptibility thermal study rare earths

Homogenization of twin-roll cast AA8079 aluminum alloy studied by in-situ TEM

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Transactions of Nonferrous Metals Society of China 2022年第7期32卷 2138-2149页

作者： R.kRÁLÍk b.kŘIVSkÁ L.bAJTOŠOVÁ M.ŠLAPÁkOVÁ M.CIESLAR Faculty of Mathematics and Physics Charles UniversityKe Karlovu 312116 Prague 2Czechia

AA8079 is a commonly used stock material for manufacturing thin packaging *** primary alloying elements Fe and Si can form binary and tertiary ***-situ TEM simulating homogenization annealing process of the as-cast material was used to analyze the real-time changes of the shape,type,and distribution of these *** affect the mechanical properties of the final product and susceptibility of the material to the formation of pinholes and other macroscopic *** set of as-cast samples were annealed in a regime simulating industrial treatment in combination with measurements of resistivity to validate the results of the in-situ *** results show clear temperature intervals of recovery,matrix desaturation,and phase transformations occurring in several stages:spheroidization of the original particles above 450℃,nucleation of new particles at 475℃,particles coarsening above 525℃,and an entire dissolution of the original particles above 550℃.

关键词： aluminum alloys in-situ annealing homogenization foil stock materials

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在钢包冶金中喂铝线优化的研究

兵器材料科学与工程 1991年第5期14卷 60-70页

作者： b.külünk R.I.L.Guthrie 周爱琪

1 前言铝不仅是生产细晶粒钢的重要合金元素,也是最有效的脱氧剂之一。某些钢号,特别是深拉钢与冷加工钢,通常要求钢中溶解铝的最终含量为0.03～0.04%。产品中铝太多会导致表面分层与脆化,而铝太少时钢材的拉拔性能差,并有疏松。由于... 详细信息

1 前言铝不仅是生产细晶粒钢的重要合金元素,也是最有效的脱氧剂之一。某些钢号,特别是深拉钢与冷加工钢,通常要求钢中溶解铝的最终含量为0.03～0.04%。产品中铝太多会导致表面分层与脆化,而铝太少时钢材的拉拔性能差,并有疏松。由于在炼钢操作时无法控制铝的氧化,要保证固溶铝在如此窄的范围内会出现一些困难。

关键词：钢包冶金喂铝线

Nonsmooth Semi-Infinite Minmax Programming Involving Generalized(Φ, ρ)-Invexity

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Journal of Systems Science & Complexity 2015年第4期28卷 857-875页

作者： UPADHYAY b b MISHRA S k Department of basic Sciences & Humanities National Institute of Technology

This paper introduces some new generalizations of the concept of （~, p）-invexity for non- differentiable locally Lipschitz functions using the tools of Clarke subdifferential. These functions are used to derive the necessary and sufficient optimality conditions for a class of nonsmooth semi-infinite minmax programming problems, where set of restrictions are indexed in a compact set. Utilizing the sufficient optimality conditions, the authors formulate three types of dual models and establish weak and strong duality results. The results of the paper extend and unify naturally some earlier results from the literature.

关键词： Duality, generalized invexity locally Lipschitz functions, minmax programming, semi-infinite programming.

Hydrogeological and Hydrochemical Characterization of Coastal Aquifers with Special Reference to Submarine Groundwater Discharge in Uttara kannada, karnataka, India

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Journal of Marine Science 2021年第3期3卷 36-46页

作者： b.k Purandara Sudhir kumar N Varadarajan Sumit kant J V Tyagi National Institute of Hydrology HRRCVV nagarBelagaviKarnatakaIndia National Institute of Hydrology Jal Vigyan BhavanRoorkeeUttarakhandIndia

In coastal areas of our country,in spite of having excess rainfall(more than 3000 mm),groundwater become a rare commodity during *** of researchers have discussed the issues related to water scarcity of coastal areas where there is a huge pressure on environment due to increased population,tourism,agriculture and industrial *** depletion of groundwater is also reported in coastal districts due to continuous discharge of direct runoff and also through subterranean flow which is termed as Submarine Groundwater Discharges(SGD).Large quantity of contaminants enter the ocean system through *** necessitated a detailed investigation to understand the hydrological processes involved and the source of *** present investigation is an attempt to make quantitative and qualitative assessment of SGD based on hydrological,hydrogeological and hydrochemical ***,water balance components were evaluated based on hydrological and hydrogeological *** parameters were also evaluated to understand the impact of seawater intrusion in pre and post-monsoon of *** revealed that,there are signatures of considerable quantity of submarine groundwater discharge in parts of Honnavara,kumta,Ankola and karwar *** influence of seawater in coastal aquifers is quite rare all along the coast of Uttara kannada district which is attributed to high groundwater recharge(15-20%)occurring in catchment areas.

关键词： Groundwater recharge Submarine groundwater recharge Aquifers Hydraulic properties Hydrochemistry

Microstructure and Mechanical Properties of Mg–7.4% Al Alloy Matrix Composites Reinforced by Nanocrystalline Al–Ca Intermetallic Particles

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Acta Metallurgica Sinica(English Letters) 2015年第4期28卷 444-448页

作者： A.k.Chaubey b.b.Jha b.k.Mishra Institute of Minerals and Materials Technology (IMMT)

Mg-7.6% Al （in mass fraction） alloy matrix composites reinforced with different volume fractions of nano- crystalline Al3Cas particles were synthesized by powder metallurgy, and the effect of the volume fraction of reinforcement on the mechanical properties was studied. Room temperature compression test reveals considerable improvement on mechanical properties as compared to unreinforced matrix. The compressive strength increases from 683 MPa for unre- inforced alloy matrix to about 767 and 823 MPa for the samples having 20 and 40 vol% of reinforcement, respectively, while retaining appreciable plastic deformation ranging between 12 and 24%. The specific strength of the composites increased significantly, demonstrating the effectiveness of the low-density AlaCas reinforcement.

关键词： Intermetallics Consolidation Dispersion strengthening Powder metallurgy Mechanicalproperty Electron microscopy