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Evaluation of Functional and Radiological Outcome of Arthroscopic-Assisted Anatomical coracoclavicular (cc) and Acromioclavicular (Ac) ligament Reconstruction in chronic Ac Joint Dislocation

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Journal of Biosciences and Medicines 2024年第3期12卷 223-237页

作者： Muhammad Hafiz Daud lim wee cheong ang Xi Yuan che wan Mohd Shaiful Nizam Siti Hawa Tahir Arthroscopy Sports Injury Unit Orthopedic Department Hospital Kuala Lumpur Kuala Lumpur Malaysia

Introduction: Acromioclavicular (Ac) joint dislocation is a common shoulder injury, comprising 9% - 12% of shoulder girdle injuries. Optimal management remains challenging, with treatment decisions guided by the Rockwood classification system. controversies surround grade III injuries, necessitating further classification. Non-operative treatment has shown favorable outcomes, while surgical interventions vary. Anatomical coracoclavicular reconstruction (AccR) has demonstrated biomechanical advantages over traditional methods. Arthroscopic techniques offer advantages, minimizing deltoid detachment and allowing concurrent pathology identification. This study evaluates the outcomes of arthroscopic-assisted AccR in chronic Ac joint dislocation. Surgical Technique: Arthroscopic-assisted AccR involves meticulous portal placement, tendon graft harvesting, diagnostic arthroscopy, and coracoid exposure. The clavicle tunnels were made to mimic the conoid and trapezoid ligament positions, using FibreTape#2 loop and Dog Bone Button for correct placement against the coracoid base, and passing the semitendinosus graft through to reconstruct the conoid ligament, reduction done and graft follow through for anatomical reconstruction. Methods: A retrospective cohort study at Hospital Kuala lumpur analyzed 35 patients undergoing arthroscopic-assisted AccR for Rockwood grade III - V Ac joint dislocations. Inclusion criteria encompassed trauma ≥ 3 weeks prior, no prior shoulder injuries, and ≥12-month follow-up. Functional and radiological assessments utilized ASES scores and coracoclavicular distances, respectively. Statistical analysis employed descriptive statistics and logistic regression. Results: The mean age was 38.9 years (SD 11.26), and 34 of 35 patients were male. Grade IV injuries were predominant (37.1%). waiting time for surgery averaged 234.9 days. Functional improvement was substantial postoperatively (ASES: 55.5 to 88.9). Radiological outcomes demonstrated reduced coraco

关键词： Arthroscopic-Assisted Anatomical coracoclavicular and Acromioclavicular ligament Reconstruction (AAcR) chronic Acromioclavicular Dislocation ASES Score Rockwood classification

light sheet microscope scanning of biointegrated microlasers for localized refractive index sensing

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Photonics Research 2024年第8期12卷 1673-1680页

作者： ROSS c.cOwIE MARcEl ScHUBERT SUPA School of Physics and AstronomyUniversity of St AndrewsSt AndrewsUK Humboldt centre for Nano and Biophotonics Department of ChemistryUniversity of CologneCologneGermany

whispering gallery mode(wGM)microlasers are highly sensitive to localized refractive index changes allowing to link their emission spectrum to various chemical,mechanical,or physical *** recently found applications in biological studies within single cells,in three-dimensional samples such as multicellular spheroids,or in ***,detailed studies of biological samples also need to account for the structural heterogeneity of tissues and live animals,therefore requiring a combination of high-resolution microscopy and laser ***,we design and construct a light sheet fluorescence microscope with a coupled spectrometer for use in microlaser studies for combined high-resolution,high-speed imaging and wGM spectral *** light sheet illumination profile and the decoupled geometry of excitation and emission hereby directly affect the lasing and sensing properties,mainly through geometric constraints and by light coupling *** demonstrate the basic working principle of microlaser spectroscopy under light sheet excitation and measure the absolute refractive index within agarose and in zebrafish tail muscle *** further analyze the light coupling conditions that lead to the occurrence of two separate oscillation *** so-called cross modes can be scanned around the entire microlaser surface,which allows to estimate a surface-averaged refractive index profile of the microlaser environment.

关键词： refractive index excitation

Epitranscriptomic Regulation of NMDA Receptors Rears its Ugly Head in chemotherapy-Induced Neuropathic Pain

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Neuroscience Bulletin 2024年第8期40卷 1209-1211页

作者： wing lam Yu Gerald w.Zamponi Department of clinical Neurosciences Hotchkiss Brain InstituteAlberta Children's Hospital Research InstituteUniversity of CalgaryCalgaryAB T2N 4N1Canada

number of different cancer chemotherapy agents such as cisplatin,oxaliplatin,and paclitaxel can lead to nerve damage,thereby giving rise to neuropathic pain states that present with mechanical and cold allodynia[1].Although these pain conditions often resolve after completion of the chemotherapy,a significant portion of patients exhibit longlasting pain that can persist longer than 12 months with a negative impact on the quality of life of affected individuals[1].

关键词： chemotherapy pain damage

Important step towards an understanding of the exotic Z_(c)(3900)

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Science china(Physics,Mechanics & Astronomy) 2024年第9期67卷 199-200页

作者： c.Hanhart Institute for Advanced Simulation Forschungszentrum JulichJilich D-52425Germany

The Standard Model of particle physics,which contains the field theories for the electro-weak interaction(QED)and the strong interaction(QcD),is an extremely successful theory describing a huge variety of phenomena at... 详细信息

关键词： interaction atomic describing

compressive property and energy absorption characteristic of interconnected porous Mg-Zn-Y alloys with adjusting Y addition

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Journal of Magnesium and Alloys 2024年第1期12卷 171-185页

作者： J.A.liu S.J.liu B.wang w.B.Sun X.J.liu Z.w.Han college of Materials Science and Engineering Key Laboratory of Automobile Materials(Ministry of Education)Jilin UniversityChangchun 130022PR China Key laboratory of Bionic Engineering(Ministry of Education) College of Biological and Agricultural EngineeringJilin UniversityChangchun130022PR China weihai Institute for Bionics-Jilin University Weihai 264205PR China

In this study,interconnected porous Mg-2Zn-xY alloys with different phase compositions were prepared by various Y additions(x=0.4,3,and 6 wt.%)to adjust the compressive properties and energy absorption *** characterization methods were then applied to identify the microstructure of the porous Mg-Zn-Y and describe the details of the second *** tests were performed at room temperature(RT),200℃,and 300℃to study the impact of the Y addition and testing temperature on the compressive properties of the porous *** experimental results showed that a high Y content promotes a microstructure refinement and increases the volume fraction of the second *** the Y content increases,different Mg-Zn-Y ternary phases appear:I-phase(Mg_(3)Zn_(6)Y),w-phase(Mg_(3)Zn_(3)Y_(2)),and lPSO phase(Mg_(12)ZnY).when the Y content ranges between 0.4%and 6%,the compressive strength increases from 6.30MPa to 9.23 MPa,and the energy absorption capacity increases from 7.33 MJ/m^(3)to 10.97 MJ/m^(3)at RT,which is mainly attributed to the phase composition and volume fraction of the second ***,the average energy absorption efficiency is independent of the Y *** addition,the compressive deformation behaviors of the porous Mg-Zn-Y are altered by the testing *** compressive strength and energy absorption capacity of the porous Mg-Zn-Y decrease due to the softening effect of the high temperature on the *** deformation behaviors at different temperatures are finally observed to reflect the failure mechanisms of the struts.

关键词： Porous magnesium Rare earth elements Microstructure compressive behavior Energy absorption characteristic

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基于多曝光图像序列的相机响应函数标定方法

光学学报 2024年第4期44卷 128-135页

作者：高刘正关棒磊苏昂李璋于起峰国防科技大学空天科学学院湖南长沙410072 酒泉卫星发射中心甘肃酒泉735000

基于多项式拟合的标定方法可在缺乏相机曝光时间的条件下,获取相机响应函数(cRF)曲线和图像曝光比,具备广泛的适用性。然而该方法存在迭代发散和标定精度不高问题,影响其实际应用。本文通过分析传统多项式拟合标定方法流程,发现在全局... 详细信息

基于多项式拟合的标定方法可在缺乏相机曝光时间的条件下,获取相机响应函数(cRF)曲线和图像曝光比,具备广泛的适用性。然而该方法存在迭代发散和标定精度不高问题,影响其实际应用。本文通过分析传统多项式拟合标定方法流程,发现在全局误差函数条件下,标定数据集合中存在大量无效项,既减少了有效标定数据,又降低了图像曝光比迭代计算精度。针对这一问题,提出了一种改进的联合局部误差函数标定方法,可在两幅曝光相近的图像间选取标定数据,避免引入无效项,使得计算多项式系数和曝光比的数据一致。在公开数据集和某工业相机拍摄数据集上的标定结果表明,改进方法具有较好的收敛性,相比于传统方法,颜色三通道cRF曲线分布更加紧凑,通道间曝光比平均偏差分别减少了49.83%和42.25%。

关键词：成像系统相机响应函数多曝光图像拟合多项式

一种基于自适应Kriging集成模型的结构可靠性分析方法

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中国机械工程 2024年第1期35卷 83-92页

作者：高进崔海冰樊涛李昂杜尊峰潍柴动力股份有限公司潍坊261061 内燃机可靠性国家重点实验室潍坊261061 天津大学建筑工程学院天津300354

基于Kriging模型的复杂结构可靠性分析结果高度依赖于Kriging模型的拟合精度,在构建Kriging模型的过程中,不同相关函数和回归函数的选择均会影响模型精度。为解决模型的不确定性对可靠性分析结果的影响,同时兼顾计算效率和精度,基于Krig... 详细信息

基于Kriging模型的复杂结构可靠性分析结果高度依赖于Kriging模型的拟合精度,在构建Kriging模型的过程中,不同相关函数和回归函数的选择均会影响模型精度。为解决模型的不确定性对可靠性分析结果的影响,同时兼顾计算效率和精度,基于Kriging模型和蒙特卡罗模拟(McS)方法,提出了一种结合自适应集成策略和主动学习函数的结构可靠度计算方法。该方法考虑Kriging模型的建模不确定性,将多种Kriging模型组合,构建了一种综合考虑样本点贡献和样本点距离的主动学习函数,通过主动学习函数迭代更新集成Kriging模型直至满足收敛条件,最后通过构建的集成Kriging模型和McS方法进行结构可靠性分析。数值算例和工程算例结果验证了所提方法的有效性,该方法与其他主要方法相比稳健性更好,在保证计算精度的同时,计算效率更高。

关键词：结构可靠性自适应集成策略 Kriging模型主动学习函数

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Flood Risk Assessment in the lower Valley of Ouémé, Benin

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Open Journal of Modern Hydrology 2024年第2期14卷 130-151页

作者： Yaovi Aymar Bossa Octave Djangni Yacouba Yira Jean Hounkpè angèle D. Avossè luc Ollivier Sintondji National Institute of water University of Abomey-Calavi Abomey Calavi Benin Africa centre of Excellence for water and Sanitation University of Abomey-Calavi Abomey Calavi Benin Hydro-climate Services Ouagadougou Burkina Faso Applied Science and Technology Research Institute-IRSAT/cNRST Ouagadougou Burkina Faso

In response to the increased frequency of flood events in recent years, it has become crucial to enhance preparedness and anticipation through precise flood risk assessments. To this end, this study aims to produce updated and precise flood risk maps for the lower Valley of Ouémé River Basin, located in the South of Benin. The methodology used consisted of a combination of geographical information systems (GIS) and multi-criteria analysis, including Analytical Hierarchy Process (AHP) methods to define and quantify criteria for flood risk assessment. Seven hydro-geomorphological indicators (elevation, rainfall, slope, distance from rivers, flow accumulation, soil type, and drainage density), four socio-economic vulnerability indicators (female population density, literacy rate, poverty index, and road network density), and two exposure indicators (population density and land use) were integrated to generate risk maps. The results indicate that approximately 21.5% of the lower Valley is under high and very high flood risk, mainly in the south between Dangbo, So-Ava, and Aguégués. The study findings align with the historical flood pattern in the region, which confirms the suitability of the used method. The novelty of this work lies in its comprehensive approach, the incorporation of AHP for weighting factors, and the use of remote sensing data, GIS technology, and spatial analysis techniques which adds precision to the mapping process. This work advances the scientific understanding of flood risk assessment and offers practical insights and solutions for flood-prone regions. The detailed flood risk indicator maps obtained stand out from previous studies and provide valuable information for effective flood risk management and mitigation efforts in the lower Valley of Ouémé.

关键词： Flood Hazard Exposure Vulnerability Risk lower Valley of Ouémé

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阵列SAR高分辨三维成像与点云聚类研究

电子与信息学报 2024年第5期46卷 2087-2094页

作者：姬昂裴昊张邦杰徐刚东南大学毫米波国家重点实验室南京210096

相较于传统SAR 2维成像,SAR 3维成像技术能克服叠掩与几何失真等问题,因而具有广阔的应用前景。作为一种3维成像典型体制,阵列SAR高程维分辨率通常理论上受阵列孔径的限制,远低于距离和方位维分辨率。针对这一问题,该文通过引入邻域像... 详细信息

相较于传统SAR 2维成像,SAR 3维成像技术能克服叠掩与几何失真等问题,因而具有广阔的应用前景。作为一种3维成像典型体制,阵列SAR高程维分辨率通常理论上受阵列孔径的限制,远低于距离和方位维分辨率。针对这一问题,该文通过引入邻域像素间高程的一致性假设,提出一种基于加权局域像素联合稀疏的压缩感知(cS)算法。然后利用K平均(K-means)和基于密度的空间聚类(DBScAN)等典型聚类算法实现观测场景内特定目标(如建筑物与车辆)聚类分析。最后,实测数据实验验证了该文所提算法的有效性。

关键词：阵列SAR 阵列超分辨 3D目标聚类