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Deleterious effects of whole-body vibration on the spine:A review of in vivo,ex vivo,and in vitro models

Animal Models and Experimental Medicine 2021年第2期4卷 77-86页

作者： Folly Patterson Raheleh Miralami Keith E.Tansey Raj K.Prabhu Lauren b.Priddy Department of Agricultural and biological Engineering Mississippi State UniversityMississippi StateMSUSA Center for Advanced Vehicular Systems Mississippi State UniversityStarkvilleMSUSA Department of Neurosurgery and Neurobiology University of Mississippi Medical CenterJacksonMSUSA Center for Neuroscience and Neurological Recovery Methodist Rehabilitation CenterJacksonMSUSA Spinal Cord Injury Medicine and Research Services G.V.(Sonny)Montgomery VA Medical CenterJacksonMSUSA

Occupational exposure to whole-body vibration is associated with the develop-ment of musculoskeletal,neurological,and other *** back pain and other spine disorders are prevalent among those exposed to whole-body vibration in occupational and military *** standards for limiting exposure to whole-body vibration have been in place for decades,there is a lack of understanding of whole-body vibration-associated risks among safety and healthcare ***,disorders associated with whole-body vibration exposure remain prevalent in the workforce and *** relationship between whole-body vibra-tion and low back pain in humans has been established largely through cohort stud-ies,for which vibration inputs that lead to symptoms are rarely,if ever,*** gap in knowledge highlights the need for the development of relevant in vivo,ex vivo,and in vitro models to study such *** parameters of vibrational stimuli(eg,frequency and direction)play critical roles in such pathologies,but the specific cause-and-effect relationships between whole-body vibration and spinal pa-thologies remain mostly *** paper provides a summary of whole-body vibration parameters;reviews in vivo,ex vivo,and in vitro models for spinal patholo-gies resulting from whole-body vibration;and offers suggestions to address the gaps in translating injury biomechanics data to inform clinical practice.

关键词： adverse effects animal models intervertebral disc spine translational research vibration

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PRELIMINARY ObSERVATIONS IN THE KALGAN AREA

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地质学报 1924年第2期 153-168+202-204页

作者： G.b.bARbOUR Department of Geology Yenching University Peking

INTRODUCTION. Though it has been recognized that no general submergence of the north-eastern part of China has taken place since the beginning of the Mesozoic Era, until recently corroborative evidence of continental ... 详细信息

关键词： PRELIMINARY ObSERVATIONS IN THE KALGAN AREA

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Microwave assisted convenient synthesis of quino[2,3-b][1,5]benzoxazepines

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Chinese Chemical Letters 2009年第5期20卷 557-561页

作者： Swapnil S.Sonar Sandip A.Sadaphal Shivaji S.Pawar bapurao b.Shingate Murlidhar S.Shingare Department of Chemistry Dr. Babasaheb Ambedkar Marathwada UniversityAurangabad 431004MSIndia Department of Chemistry Vinayakrao Patil Mahavidyalaya VaijapurAurangabad 423701MSIndia National Chemical Laboratory Pune 411008MSIndia

A convenient synthesis of quino[2,3-b] [ 1,5]benzoxazepines from substituted 2-chloroquinoline-3-carbaldehyde and 2-hydroxy- aniline by using stable, non-toxic and inexpensive catalyst 1,8-diazabicyclo-undecan-7-ene （DbU）/silica gel is described. This method affords the quino[2,3-b][1,5]benzoxazepines under the influence of microwave irradiation （360 W） in solvent-free conditions within short reaction times （2-3 min）, giving high yields of products （93-96%）.

关键词： Quino[2,3-b][1.,5]benzoxazepines DbU/silica gel Microwave irradiation Solvent-free

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Constraints on Neutrino Masses from baryon Acoustic Oscillation Measurements

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International Journal of Astronomy and Astrophysics 2018年第1期8卷 1-5页

作者： b. Hoeneisen Universidad San Francisco de Quito Quito Ecuador

From 21 independent baryon Acoustic Oscillation (bAO) measurements we obtain the following sum of masses of active Dirac or Majorana neutrinos: , where and . This result may be combined with independent measurements t... 详细信息

关键词： Neutrino Mass baryon Accoustic Oscillations Cosmology

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Palladium CO Sensor with Oscillatory Response

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稀有金属材料与工程 2006年第A3期35卷 194-196页

作者： L. Li W. Wlodarski S. Kandasamy D. b. Akolekar Z. G. Zhou School of Electrical ＆ Computer Engineering RMIT University Melbourne VIC 3001 Australia CRC for Microtechnology Hawthorn VIC 3122 Australia School of Applied Sciences RMIT University Melbourne VIC 3001 Australia State Key Lab of New Ceramics and Fine Processing Tsinghua University Beijing 100084 China

Oscillatory changes in resistivity of palladium coil based sensors were studied in the presence of carbon monoxide under constant operating *** in resistance were observed at operating temperature ranging from 100℃to 130℃.both the period and the amplitude of the waveform increased with increasing CO *** is believed that oscillations occurred between two branches of a Langmuir-Hinshelwood reaction mechanism.

关键词： oscillation palladium carbon monoxide gas sensor

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Numerical modeling of the transmission dynamics of drug-sensitive and drug-resistant HSV-2

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Communications in Nonlinear Science and Numerical Simulation 2001年第1期6卷 23-27页

作者： A. b. GUMEL(Department of Mathematics, University of Manitoba, Winnipeg, Manitoba, R3T 2N2, Canada ) Department of Mathematics University of Manitoba Winnipeg Manitoba R3T 2N2 Canada

A competitive finite-difference method will be constructed and used to solve a modified deterministic model for the spread of herpes simplex virus type-2 (HSV-2) within a given population. The model monitors the transmission dynamics and control of drug-sensitive and drug-resistant HSV-2. Unlike the fourth-order Runge-Kutta method (RK4), which fails when the discretization parameters exceed certain values, the novel numerical method to be developed in this paper gives convergent results for all parameter values.

关键词： HSV-2 finite-difference initial-value problem numerical instabilities positivity

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考虑地下水入侵导致土壤强度变化的沿海建筑地基韧性模型

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岩土力学 2023年第1期44卷 67-74页

作者：王草 AYYUb b.M KUMARI W.G.P 伍伦贡大学土木、采矿与环境学院澳大利亚伍伦贡马里兰大学土木与环境工程学院美国马里兰

海平面上升导致的地下水入侵沿海地区的建筑地基造成显著风险。提出了一个考虑地下水侵入导致土壤强度退化的沿海建筑地基韧性模型。该模型由地基的性能函数在服役期内的积分得到。考虑条形基础的韧性,其极限承载力由Terzaghi公式描述... 详细信息

海平面上升导致的地下水入侵沿海地区的建筑地基造成显著风险。提出了一个考虑地下水侵入导致土壤强度退化的沿海建筑地基韧性模型。该模型由地基的性能函数在服役期内的积分得到。考虑条形基础的韧性,其极限承载力由Terzaghi公式描述。韧性模型考虑气候变化背景下地下水位的上升对土壤强度的影响。通过一个算例,展示了所提出的韧性模型的适用性。结果表明,如果不考虑气候变化影响下地下水位的上升,则会得到不保守的结构韧性评估结果。结构全寿命周期内的韧性也取决于所采用的维护措施(即,修复受损的结构性能)。未来的研究中,还应考虑其他因素(如锈蚀)对沿海建筑地基性能退化的联合影响。

关键词：韧性模型沿海建筑地基土壤强度变化地下水入侵气候变化

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Additive friction stir deposition of AZ31b magnesium alloy

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Journal of Magnesium and Alloys 2022年第9期10卷 2404-2420页

作者： Sameehan S.Joshi Shreyash M.Patil Sangram Mazumder Shashank Sharma Daniel A.Riley Shelden Dowden Rajarshi banerjee Narendra b.Dahotre Department of Materials Science and Engineering University of North Texas3940 N Elm StDentonTX 76207USA Center for Agile and Adaptive Additive Manufacturing University of North Texas3940 N Elm StDentonTX 76207USA

The current work explored additive friction stir deposition of AZ31b magnesium alloy with the aid of MELD?***31b magnesium bar stock was fed through a hollow friction stir tool rotating at constant velocity of 400 rpm and translating at linear velocity varied from 4.2 to 6.3 mm/s.A single wall consisting of five layers with each layer of 140×40×1 mm^(3)dimensions was deposited under each processing ***,phase,and crystallographic texture evolutions as a function of additive friction stir deposition parameters were studied with the aid of scanning electron microscopy including electron back scatter diffraction and X-ray *** feed material and additively produced samples consisted of theα-Mg *** additively produced samples exhibited a refined grain structure compared to the feed *** feed material appeared to have a weak basal texture,while the additively produced samples experienced a strengthening of this basal *** additively produced samples showed a marginally higher hardness compared to the feed *** current work provided a pathway for solid state additive manufacturing of Mg suitable for structural applications such as automotive components and consumable biomedical implants.

关键词： Additive friction stir deposition Magnesium alloys Additive manufacturing Thermomechanical processing Materials processing Solid state additive manufacturing

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Charlotte's Web

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语数外学习(高中版中旬) 2022年第6期 83-90页

作者： E.b.White

《夏洛的网》是一部描写友情的童话。在朱克曼家的谷仓里，小猪威尔伯和蜘蛛夏洛建立了最真挚的友谊。威尔伯的生命有危险时，看似渺小的夏洛用自己的力量救了威尔伯，但这时，蜘蛛夏洛的生命却走到了尽头……《夏洛的网》是一部可以与...

《夏洛的网》是一部描写友情的童话。在朱克曼家的谷仓里，小猪威尔伯和蜘蛛夏洛建立了最真挚的友谊。威尔伯的生命有危险时，看似渺小的夏洛用自己的力量救了威尔伯，但这时，蜘蛛夏洛的生命却走到了尽头……《夏洛的网》是一部可以与《小王子》相媲美的世界名著。这部作品初版于1952年，已有20多种译文，发行近千万册。

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DEEP WELLS IN THE PEKING AREA

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地质学报 1924年第2期 127-138+197页

作者： G.b.bARbOUR Department of Geology Yenching University Peking

The underground water-supply of the plain of North Chihli is of sufficient importance to geologists and civil engineers to warrant the placing in readily available form of some data till now not easily accessible.

关键词： DEEP WELLS IN THE PEKING AREA down

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