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Open Journal of Orthopedics 2024年第8期14卷 374-379页

作者： Frederick F. Buechel sr Frederick F. Buechel Jr Rutgers New Jersey Medical School Department of Orthopaedic Surgery Newark USA Lenox Hill Hospital Department of Orthopaedic Surgery New York USA

Background: Sagittal plane placement of the tibial component in total knee replacement (TKR) has important implications for maximizing the range of flexion motion, allowing collateral ligaments to function more normally, as well as providing ideal compressive loading on the tibial bone-prosthesis interface. This study attempts to quantify the normal posterior tibial slope (PTS) angle pre-operatively and post-operatively in osteoarthritic patients after using a conventional extramedullary tibial resection guide to assess its effectiveness. Methods: Forty-nine primary cementless total knee replacements in 34 osteoarthritic patients were measured radiographically pre-operatively and one year post-operatively to determine the PTS and its effect on range of motion. Lateral X-rays, using the anterior cortical line of the tibia, were employed for all measurements. Results: Pre-operative PTS measured 11.83˚ (range 5˚ - 18˚), while post-operative PTS of implanted tibial components measured 11.30o (range 4˚ - 18˚). The pre-operative range of motion of 112˚ (range 30˚ to 135˚) was improved to 119˚ (range 90˚ to 135˚) post-operatively after 1 year. Conclusions: Anterior tibial shaft referencing using a conventional extramedullary tibial resection guide provides an easy and convenient method for reproducing the anatomical PTS during TKR. This methodology provided improvement in average range of motion from 112˚ pre-operatively to 119˚ post-operatively at one year.

关键词： Posterior Tibial Slope Posterior Tibial Inclination Extramedullary Tibial Resection Guide Total Knee Alignment

Mathematical Modeling of the Co-Infection Dynamics of HIV and Tuberculosis Incorporating Inconsistency in HIV Treatment

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Journal of Applied Mathematics and Physics 2024年第5期12卷 1744-1768页

作者： sr Mary Nyambura Mwangi Virginia M. Kitetu Isaac O. Okwany Department of Mathematics and Actuarial Science Catholic University of Eastern Africa Nairobi Kenya

A non-linear HIV-TB co-infection has been formulated and analyzed. The positivity and invariant region has been established. The disease free equilibrium and its stability has been determined. The local stability was determined and found to be stable under given conditions. The basic reproduction number was obtained and according to findings, co-infection diminishes when this number is less than unity, and persists when the number is greater than unity. The global stability of the endemic equilibrium was calculated. The impact of HIV on TB was established as well as the impact of TB on HIV. Numerical solution was also done and the findings indicate that when the rate of HIV treatment increases the latent TB increases while the co-infected population decreases. When the rate of HIV treatment decreases the latent TB population decreases and the co-infected population increases. Encouraging communities to prioritize the consistent treatment of HIV infected individuals must be emphasized in order to reduce the scourge of HIV-TB co-infection.

关键词： Co-Infection Modeling HIV-TB Co-Infection Mathematical Modeling Reproduction Number Inconsistent Treatment

Mathematical Modeling of HIV Investigating the Effect of Inconsistent Treatment

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Journal of Applied Mathematics and Physics 2024年第4期12卷 1063-1078页

作者： sr Mary Nyambura Mwangi Virginia M. Kitetu Isaac O. Okwany Department of Mathematics and Actuarial Science Catholic University of Eastern Africa Nairobi Kenya

HIV is a retrovirus that infects and impairs the cells and functions of the immune system. It has caused a great challenge to global public health systems and leads to Acquired Immunodeficiency Syndrome (AIDS), if not attended to in good time. Antiretroviral therapy is used for managing the virus in a patient’s lifetime. Some of the symptoms of the disease include lean body mass and many opportunistic infections. This study has developed a SIAT mathematical model to investigate the impact of inconsistency in treatment of the disease. The arising non-linear differential equations have been obtained and analyzed. The DFE and its stability have been obtained and the study found that it is locally asymptotically stable when the basic reproduction number is less than unity. The endemic equilibrium has been obtained and found to be globally asymptotically stable when the basic reproduction number is greater than unity. Numerical solutions have been obtained and analyzed to give the trends in the spread dynamics. The inconsistency in treatment uptake has been analyzed through the numerical solutions. The study found that when the treatment rate of those infected increases, it leads to an increase in treatment population, which slows down the spread of HIV and vice versa. An increase in the rate of treatment of those with AIDS leads to a decrease in the AIDS population, the reverse happens when this rate decreases. The study recommends that the community involvement in advocating for consistent treatment of HIV to curb the spread of the disease.

关键词： HIV Modeling Mathematical Modeling Reproduction Number Inconsistent Treatment

巨噬细胞移动抑制因子通过CC趋化因子配体2诱导巨噬细胞聚集

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中国动脉硬化杂志 2007年第4期 285-285页

作者： Gregory JL Morand EF McKeown SJ Ralph JA Hall P Yang YH mccoll sr Hickey MJ 何钒

《美国儿童鼓膜置管临床实践指南概要(更新版)》摘译

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听力学及言语疾病杂志 2024年第1期32卷 89-91页

作者：韩继波(译) 曹永茂(审校) 武汉大学人民医院耳鼻咽喉头颈外科武汉430060

鼓膜置管主要用于治疗持续的中耳积液、反复的中耳感染、或者中耳感染药物不能控制的患儿。儿童鼓膜置管临床指南(2022)概要是对2013年美国耳鼻咽喉头颈外科学会“儿童鼓膜置管临床指南”的更新,是对近十年来新的临床研究和循证医学证... 详细信息

鼓膜置管主要用于治疗持续的中耳积液、反复的中耳感染、或者中耳感染药物不能控制的患儿。儿童鼓膜置管临床指南(2022)概要是对2013年美国耳鼻咽喉头颈外科学会“儿童鼓膜置管临床指南”的更新,是对近十年来新的临床研究和循证医学证据的进一步总结。

关键词：耳鼻咽喉头颈外科学鼓膜置管临床指南中耳积液临床实践指南循证医学证据更新版概要

THE TEMPERATURE STRESS OF RC CONCRETE COMPONENT INDUCED BY LINEAR EXPENSION COEFFICIENT DIFFERENCE

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Journal of Wuhan University of Technology(Materials Science) 1999年第1期14卷 58-61页

作者： Wang, sr Mao, T Wuhan Univ Technol Coll Architecture Dept Engn Wuhan 430070 Peoples R China

The temperature stress of reinforced concrete component caused by different linear expension coefficient has been discussed in this paper from the point of view of composite materials, The temperature dress can reach about 22 to 45 percent of the tension strength for the concrete with low grade and high ratio of reinforcement which should be considered seriously.

关键词： reinforced concrete linear expension coefficient stress

A Theoretical Study of the Pressure for Liquid Metal Infiltration of a Fiber Preform

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Journal of Materials Science & Technology 1995年第1期11卷 75-78页

作者： YU, sr HE, ZM

A theoretical model has been established for calculating the infiltration pressure of metal melt into the preform of ceramic fibers according to the basic principle of hydromechanics. There are three forces acting on the infiltration process in the model, i.e. viscous friction, capillary force, and gravity. The effects of the volume fraction of fibers (V-f) and infiltrating depth on the infiltration pressure are discussed. the results show that the infiltration pressure increases with tile increase of fiber volume fraction and infiltration depth. There is a linear relationship between infiltration pressure and infiltration depth. The effect of gravity on the infiltration pressure can be ignored.

关键词： MATRIX COMPOSITES

Intracellular recording and morphology of tectal neurons activated by contralateral nucleus isthmi in toads

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Chinese Science Bulletin 1997年第19期42卷 1647-1651页

作者： Wang, sr Wu, GY Laboratory for Visual Information Processing Institute of Biophysics Chinese Academy of Sciences Beijing China

THE nucleus isthmi (NI) in lower vertebrates and its mammalian analogue, the nucleus para-bigeminalis, are all visual centres. They receive their tectal input ipsilaterally and project backipsilaterally in teleosts and birds, or bilaterally in amphibians and reptiles, as well as in mam-mals. It is well known that NI receives its visual excitation through the ipsilateral optic tec-tum (OT). NI mainly exerts inhibition on the ipsilateral OT in frogs.A recent study

关键词： nucleus isthmi tectum intracellular recording morphology toad

Decision Support for Integrated Management of Local-Level Adaptation to Climate Changes: The Case of Serbia

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International Journal of Disaster Risk Science 2021年第4期12卷 479-494页

作者： Petar Vranić srđan Glišović Lazar Velimirović Mathematical Institute of the Serbian Academy of Sciences and Arts 11001BelgradeSerbia Faculty of Occupational Safety in Niš University of Niš18000NišSerbia

Projected climate changes will additionally increase the already significant risk of natural hazard-related disasters in Serbia and the west Balkan region as a *** is about to introduce the strategy for climate change adaptation and ***,a national decision-support system for implementation of the climate change law and strategy is yet to be *** study contributes to the implementation of adaptation policies at subnational levels by development of a decision-support model for local-level management of the climate change adaptation *** study explores the potential for synergetic application of multicriteria decision making analysis and probabilistic reasoning methods by focusing on Bayesian networks,analytical hierarchy processes,and geographic information systems for selection of priority adaptation *** study was based on the formation of causal chains,which enable linking management decisions and socioeconomic or biophysical consequences into articulated sequences of conditional relationships.A model was tested in the forestry sector,and it clearly pointed out development of an early warning system and planning of water intake basins as priority adaptation *** the results are shown as a probability distribution for each alternative solutions,the model can assist decision makers with prompt evaluation of various scenarios.

关键词： Bayesian networks Climate change adaptation Multicriteria decision-making Serbia Wildfire risk

Multiple bilateral costo-chondral abscesses due to Mycobacterium tuberculosis

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Asian Pacific Journal of Tropical Medicine 2010年第11期3卷 922-924页

作者： Peter George Basti sr Joy AS Department of Medicine Yenepoya Medical CollegeUniversity RoadMangalore -575018KarnatakaIndia Department of Radio-diagnosis & Imaging Fr Muller Medical CollegeFr Muller RoadMangalore -575002KarnatakaIndia

Multiple abscesses of the costo-chondral junctions are very uncommon in *** this report we present the case of a 55 year old man who presented to us with chest pain and fever of few months *** imaging with ultrasound and CECT we were able to demonstrate multiple abscesses of costo-chondral junctions *** confirmed tuberculosis by FNAC and BACTEC cultures from abscesses.

关键词： Costo-chondral abscesses Multiple rib abscesses Tuberculosis