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训练-过度训练——对中长跑运动员的预期性实验研究

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山东体育学院学报 1992年第1期8卷 19-26页

作者： m.lehmann 姜文凯王立红

运动员在训练或比赛中过度消耗体力是其专项运动成绩停滞不前或能力降低的主要原因之一。迄今为止,正如ZsraeL’s所说,能够客观反映过度训练状态的生理生化参数是很少的。虽然已经报道一些病例或分析资料,但对于优秀运动员的预期性实验... 详细信息

运动员在训练或比赛中过度消耗体力是其专项运动成绩停滞不前或能力降低的主要原因之一。迄今为止,正如ZsraeL’s所说,能够客观反映过度训练状态的生理生化参数是很少的。虽然已经报道一些病例或分析资料,但对于优秀运动员的预期性实验研究尚未见诸报道,过度训练可表现为副交感型(Addisonoid)和交感型(Basodowoid)过度训练综合症。前者主要表现是运动能力减退,安静心率降低。

关键词：过度训练中长跑运动员实验研究儿茶酚胺优秀运动员去甲肾上腺素预期性耐力训练亚极量运动运动能力

双套冠固位可摘局部义齿的临床长期成功率研究间隙配合型双套冠的重要性

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中国口腔医学继续教育杂志 2006年第3期9卷 25-31页

作者： Hans-Jurgen Wenz Katrin Hertrampf Axel Sonnenschein Klaus m. lehmann 陈俊（译）冯海兰（校）不详北京大学口腔医学院北京海淀区中关村南大街22号100081

双套冠作为可摘义齿的固位装置已有十余年的历史。根据固位方式的不同可将双套冠分为以下3种：套筒冠（摩擦固位）、锥形双套冠（楔力固位）及间隙配合型双套冠（附加的固位装置）。尽管双套冠在临床上已得到广泛深入的应用．但迄今为... 详细信息

双套冠作为可摘义齿的固位装置已有十余年的历史。根据固位方式的不同可将双套冠分为以下3种：套筒冠（摩擦固位）、锥形双套冠（楔力固位）及间隙配合型双套冠（附加的固位装置）。尽管双套冠在临床上已得到广泛深入的应用．但迄今为止仅有少量的文献报道了双套冠修复体的长期成功率。本文对间隙配合型的marburg双套冠原理进行了研究。相对于其它类型的双套冠．marburg双套冠义齿是一种弹性支持型修复体。长期成功率研究表明．marburg双套冠系统的基牙脱落率5年为6％．10年为18％。如果基牙数量足够，所有不同类型的双套冠系统都可以达到这样好的预后效果。然而．刚性就位双套冠系统会增高基牙脱落率。研究表明．按照牙周病修复治疗理论设计的弹性支持型可摘义齿没有显著增高基牙脱落率．因此该设计可能有利于口内余留牙数量较少的情况。

关键词：双套冠修复体可摘局部义齿固位装置配合型 marburg双套冠系统间隙功率临床可摘义齿理论设计

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城市定义设计-沿海大道,蒙彼利埃

世界建筑导报 2006年第8期21卷 70-71页

作者： m.Robain R.Tisnado JF.Bonne A.Bretagnolle RH.Arnaud Lm.Fischer m.lehmann R.Ayache 法国AS.建筑工作室

Evaluation of mandibular Deprogramming Using TENS (Transcutaneous Electrical Nerve Stimulation) in Patients at the Specialty Clinic of the Juarez Autonomous University of Tabasco from 2022 to 2024

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Journal of Biosciences and medicines 2024年第7期12卷 245-251页

作者： Christian C. Aguilar-Caamal Landy V. Limonchi-Palacio Crystell G. Guzmán-Priego Jeannette Ramírez-mendoza José m. lehmann-mendoza miguel A. López-Alvarado Xavier E. moreno-Enriquez Jorda A. Albarrán-melzer Academic Division of Health Sciences Juarez Autonomous University of Tabasco Villahermosa Tabasco Mxico Cardiometabolism Laboratory Academic Division of Health Sciences Juarez Autonomous University of Tabasco Villahermosa Tabasco Mxico

Temporomandibular disorders (TmD) negatively affect quality of life, causing pain and restricted jaw movements. This study evaluates the effectiveness of Transcutaneous Electrical Nerve Stimulation (TENS) on TmD patients before orthodontic treatment at the Juarez Autonomous University of Tabasco. A quantitative, quasi-experimental study was conducted with 30 patients who met the inclusion criteria: aged 18 to 65 years, with TmJ pain symptoms, diagnosed with temporomandibular disorders using the Helkimo index, and who had provided informed consent for the study. The range of mandibular movement and the Visual Analog Scale (VAS) were measured to record values before therapy. The electrodes of the TENS therapy were positioned on both sides of the jaw in the preauricular area and the masseter muscle, the therapy was administered for 40 minutes, utilizing a frequency of 2 - 4 Hz and a pulse duration of 300 microseconds. Following this, the range of mandibular movement and the VAS were reassessed to evaluate the outcomes., significantly improved maximum mouth opening (37.7 ± 6.4 mm to 44.6 ± 5.88 mm), right laterality (3.86 ± 1.57 mm to 5.43 ± 1.21 mm), left laterality (3.13 ± 1.63 mm to 4.53 ± 1.61 mm), protrusion (4.01 ± 1.7 mm to 5.36 ± 1.32 mm), and pain perception (4.56 ± 2.045 to 2.03 ± 1.5) (P mandibular movement and reduces pain, making it a well-tolerated, non-invasive complementary treatment for TmD.

关键词： TENS Opening Deprogramming Electrostimulation TmJ (Temporomandibular Joint)

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重庆科技馆

世界建筑导报 2006年第8期21卷 82-83页

作者： m.Robain R.Tisnado J-F.Bonne A.Bretagnolle R-H.Arnaud L-m.Fischer m.lehmann R.Ayache 法国AS.建筑工作室

评估多氯联苯吸入所导致的健康风险:解决不确定性的研究需求

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环境与职业医学 2015年第6期32卷 534-534页

作者： Geniece m.lehmann Krista Christensen mark maddaloni Linda J.Phillips

[背景]在一些建筑物内,多氯联苯(PCBs)的室内空气浓度要比背景值高出一个甚至更多的数量级。为此,人们试图评估吸入PCBs所造成的潜在健康风险。但是由于来源、暴露和暴露-反应的特征描述以及评估中存在着不确定性,这些尝试受到了阻碍。... 详细信息

[背景]在一些建筑物内,多氯联苯(PCBs)的室内空气浓度要比背景值高出一个甚至更多的数量级。为此,人们试图评估吸入PCBs所造成的潜在健康风险。但是由于来源、暴露和暴露-反应的特征描述以及评估中存在着不确定性,这些尝试受到了阻碍。[目的]简要介绍室内空气中PCBs的一些常见来源,并估计特定年龄组的吸入暴露对总PCBs暴露的贡献量。随后,确定需要进行重点研究的领域,以提高对PCBs吸入暴露和暴露反应的评估水平。[讨论]虽然美国在1979年就开始禁止生产PCBs,但在此之前建造的许多建筑中仍含有潜在的污染来源,造成室内空气PCBs污染。在一些室内条件下和一些年龄组中,吸入暴露对PCBs总暴露的贡献可能大于其他任何暴露途径。PCBs暴露与人体健康效应相关,但针对吸入途径的数据仍然很少。为了进行暴露-反应评估,在今后研究PCBs吸入的健康效应时要仔细考虑研究设计的一些方面,包括描述PCBs混合暴露的特征,这一点十分重要。[结论]在某些情况下,PCBs的吸入暴露对PCBs总暴露的贡献量可能比以前认为的更多。新的流行病学和毒理学研究致力于解决PCBs吸入对健康的潜在影响,可能有助于确定暴露-反应关系和进行风险评估。

关键词： PCBs 氯联苯背景值贡献量毒理学研究室内条件人体健康风险评估污染来源暴露途径

Nonlinear forced vibration in a subcritical regime of a porous functionally graded pipe conveying fluid with a retaining clip

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Applied mathematics and mechanics(English Edition) 2025年第1期46卷 101-122页

作者： m.GHOLAmI m.EFTEKHARI Department of mechanical Engineering Shahid Bahonar University of Kerman

This study examines the nonlinear behaviors of a clamped-clamped porous pipe made of a functionally graded material(FGm) that conveys fluids and is equipped with a retaining clip, focusing on primary resonance and subcritical dynamics. The nonlinear governing equations for the FGm pipe are derived by the extended Hamilton's principle, and subsequently discretized through the application of the Galerkin *** direct method of multi-scales is then used to solve the derived equations. A thorough analysis of various parameters, including the clip stiffness, the power-law index, the porosity, and the clip location, is conducted to gain a comprehensive understanding of the system's nonlinear dynamics. Through the analysis of the first natural frequency, the study highlights the influence of the flow velocity and the clip stiffness, while the comparisons with metallic pipes emphasize the role of FGm composition. The examination of the forced response curves reveals saddle-node bifurcations and their dependence on parameters such as the detuning parameter and the power-law index, offering valuable insights into the system's nonlinear resonant behavior. Furthermore, the frequency-response curves illustrate the hardening nonlinearities influenced by factors such as the porosity and the clip stiffness, revealing nuanced effects on the system response and resonance characteristics. This comprehensive analysis enhances the understanding of nonlinear behaviors in FGm porous pipes with a retaining clip, providing key insights for practical engineering applications in system design and optimization.

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Identifying coastal towns and small cities in Denmark using global population data to support climate change adaptation

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International Journal of Digital Earth 2020年第9期13卷 1040-1054页

作者： James m.Fitton martin lehmann David C.major Department of Planning Aalborg UniversityAalborgDenmark The Earth Institute Columbia UniversityNew YorkNYUSA

Coastal settlements face many hazards from climate ***,there has been extensive focus on developing and implementing ***,these efforts have prodominantly centred on larger *** towns and small cities(urban areas between 1000 and 100,000 people)have received little attention,despite experiencing a number of barriers to *** absence of information on the global scale of the adaptation challenge within coastal towns and small cities may have contributed to these settlements being *** paper develops a method that can be used to estimate the numbers,sizes,and locations of coastal towns and small cities worldwide from global population data(Global Human Settlement data).Denmark is used as a pilot for this method with settlements over 1000 people classified with relatively high *** method developed here represents a potentially fruitful approach to supporting coastal adaptation,as coastal towns and small cities are identifiable globally,they can be classified into *** will support an assessment of their risk to coastal hazards,and could facilitate knowledge and practice sharing between similar coastal towns and small cities.

关键词： Climate change adaptation global data coastal hazards Denmark small urban areas

Neurogenesis dynamics in the olfactory bulb:deciphering circuitry organization, function, and adaptive plasticity

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Neural Regeneration Research 2025年第6期20卷 1565-1581页

作者： moawiah m.Naffaa Department of Psychology and Neuroscience Duke UniversityDurhamNCUSA Department of Cell Biology Duke University School of MedicineDurhamNCUSA

Adult neurogenesis persists after birth in the subventricular zone, with new neurons migrating to the granule cell layer and glomerular layers of the olfactory bulb, where they integrate into existing circuitry as inhibitory interneurons. The generation of these new neurons in the olfactory bulb supports both structural and functional plasticity, aiding in circuit remodeling triggered by memory and learning processes. However, the presence of these neurons, coupled with the cellular diversity within the olfactory bulb, presents an ongoing challenge in understanding its network organization and function. moreover,the continuous integration of new neurons in the olfactory bulb plays a pivotal role in regulating olfactory information processing. This adaptive process responds to changes in epithelial composition and contributes to the formation of olfactory memories by modulating cellular connectivity within the olfactory bulb and interacting intricately with higher-order brain regions. The role of adult neurogenesis in olfactory bulb functions remains a topic of debate. Nevertheless, the functionality of the olfactory bulb is intricately linked to the organization of granule cells around mitral and tufted cells. This organizational pattern significantly impacts output, network behavior, and synaptic plasticity, which are crucial for olfactory perception and memory. Additionally, this organization is further shaped by axon terminals originating from cortical and subcortical regions. Despite the crucial role of olfactory bulb in brain functions and behaviors related to olfaction, these complex and highly interconnected processes have not been comprehensively studied as a whole. Therefore, this manuscript aims to discuss our current understanding and explore how neural plasticity and olfactory neurogenesis contribute to enhancing the adaptability of the olfactory system. These mechanisms are thought to support olfactory learning and memory, potentially through increased

关键词： network adaptability neurogenesis neuronal communication olfactory bulb olfactory learning olfactory memory synaptic plasticity