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The Artificial Disc Nucleus and Other Strategies for Replacement of the Nucleus Pulposus:Past,Present and Future Designs for an Emerging Surgical Solution

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Engineered Regeneration

Engineered Regeneration 2024年第2期5卷 269-281页

作者： Greg Sacks Vincent DeStefano Claire Parker Ryan Lebens harry Mushlin Renaissance School of Medicine at Stony Brook University Stony BrookNYUSA

Nucleus Pulposus(NP)Replacement is a developing surgical methodology for the treatment of pathology related to degeneration of intervertebral discs(IVDs).This article provides necessary context regarding the patholo-gies treated with this technology,the biomechanical structure and function of the IVD,and the procedures this technology aims to ***,it provides an overview and discussion of commercial and experimental preformed and in situ curing prosthesis designs reported in the scientific literature and summarizes the results of biomechanical and clinical studies evaluating their *** and updated information on the most recent research into NP replacement with novel hydrogel and tissue engineering(TE)strategies is *** of the NP allows for potential improvement in the treatment of degenerative spinal pathologies through minimally invasive surgical techniques.

关键词： Nucleus Pulposus Intradiscal Prosthesis Hydrogel Artificial Disc Implant Spine Surgery

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提高钻头性能的钻心磨薄法

工具技术 1966年第6期16卷 29-30页

作者： harry conn 治果

磨薄钻心可改善钻头的工作性能。文中主要是比较了三种不同磨薄钻心的方法,其中以C法的效果最好。采用C法磨薄钻心后,钻头轴向力可减小20～40%,且刀具耐用度可提高。

关键词：钻头性能耐用度刀具修磨横刃轴向力

Assessment of corrected time-step method for nominal ionospheric gradient calculation: A comparative analysis with spatial approaches

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Earth and Planetary Physics 2024年第4期8卷 641-649页

作者： Slamet Supriadi Prayitno Abadi Susumu Saito harry Bangkit Dwiko Unggul Prabowo Adi Purwono Ginaldi Ari Nugroho Research Center for Smart Mechatronics National Research and Innovation Agency(BRIN)BandungIndonesia Research Center for Climate and Atmosphere BRINBandungIndonesia School of Electrical Engineering Telkom UniversityKab.BandungIndonesia Electronic Navigation Research Institute National Institute of MaritimePort and Aviation TechnologyTokyoJapan Research Center for Space BRINBandungIndonesia

The effect of ionospheric delay on the ground-based augmentation system under normal conditions can be mitigated by determining the value of the nominal ionospheric gradient(σvig).The nominal ionospheric gradient is generally obtained from Continuously Operating Reference Stations data by using the spatial single-difference method(mixed-pair,station-pair,or satellite-pair)or the temporal single-difference method(time-step).The time-step method uses only a single receiver,but it still contains ionospheric temporal *** introduce a corrected time-step method using a fixed-ionospheric pierce point from the geostationary equatorial orbit satellite and test it through simulations based on the global ionospheric *** also investigate the effect of satellite paths on the corrected time-step method in the region of the equator,which tends to be in a more north–south direction and to have less coverage for the east–west ionospheric *** study also addresses the limitations of temporal variation correction coverage and recommends using only the correction from *** processes are developed under simulations because observational data are still difficult to *** findings demonstrate that the corrected time-step method yieldsσvig values consistent with other approaches.

关键词： ground-based augmentation system nominal ionospheric gradient time-step correction global ionospheric model

Polar Models of Culture-Regressivism Versus Progressivism

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Cultural and Religious Studies 2024年第4期12卷 193-209页

作者： harry W.Adams Prairie View A&M University TXUSA

The culture wars that simmer within any nation may have been escalating recently;but regardless of their national settings or milieus,many of these wars are informed by two opposing paradigms of *** paper analyzes two of these leading paradigms,designated here as Regressivism and *** theorists have long chronicled the differing strengths and weaknesses of these paradigms,taking the former as expressing more conservative,traditional,and nationalistic values,and the latter as expressing more liberal,pluralistic,and cosmopolitan *** beyond these perennial distinctions,I argue that Progressivism is more benign and beneficial than the former-by meeting basic human needs better and supporting more effective adaptation to changing exigencies.I also argue that Progressivism does not express merely subjective or relativistic preferences and values,but objectively preferable and quantifiable ones,that benefit not only our personal lives more but also our global village and communal lives more.

关键词： cultural pluralism conservatism nationalism cosmopolitanism communitarianism

Corrosion Test of the Steel Plate in a WJ-8 Fastener for High Speed Rail

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Journal of Transportation Technologies 2024年第1期14卷 16-30页

作者： Zhiyong Wang Zhiping Zeng Hualiang (harry) Teng Department of Mechanical Engineering University of Nevada Las Vegas USA School of Civil Engineering Central South University Changsha China Department of Civil and Environmental Engineering and Construction University of Nevada Las Vegas USA

It was found that the steel plate in the composite plate in the WJ-8 fastener used in high speed rail is rusty. The objective of this study is to test the zinc coating of the steel plate. A literature review was conducted to identify the zinc coating techniques, and the companies that can provide different coating service was identified. A salt fog chamber was built that was in compliance with the ANSI B117 code, and the steel plates that were coated by the identified companies were tested using the salt fog chamber. The results indicated that the coating technique that had the best performance in preventing corrosion was the Greenkote plates with passivation. The galvanized option had the roughest coating layer, and it was the most reactive in the salt water solution. This makes it non-ideal for the dynamic rail environment because the increased friction of the plate could damage the supports, especially during extreme temperatures that would cause the rail to expand or contract. Greenkote with Phosphate and ArmorGalv also provided increased corrosion prevention with a smooth, strong finish, but it had more rust on the surface area than the Greenkote with ELU passivation. The ArmorGalv sample had more rust on the surface area than the Greenkote samples. This may not be a weakness in the ArmorGalv process;rather, it likely was the result of this particular sample not having the added protection of a colored coating.

关键词： Steel Plate for High Speed Rail Fastening Steel Corrosion Zinc Coating Salt-Fog Chamber

Amelioration of habitat since the early Holocene contributed to the origin of agriculture in the farming-pastoral zone of northern China

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Science China Earth Sciences 2024年第8期67卷 2535-2546页

作者： Xin JIA Zhiping ZHANG Yonggang SUN Runqi JIANG Shuangwen YI Wei CHEN Jue SUN Guoqiang LI Shuzhi WANG Enrui LI Xiaonong HU Qingchun BAO harry F.LEE Huayu LU Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application Nanjing 210023China Schlool of History and Culture Chifeng UniversityChifeng 024000China School of Geography and Ocean Science Nanjing UniversityNanjing 210023China State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and PalaeontologyChinese Academy of SciencesNanjing 210008China Key Laboratory of Western China’s Environmental Systems(Ministry of Education) College of Earth and Environmental SciencesLanzhou UniversityLanzhou 730000China Institute of Archaeology Chinese Academy of Social SciencesBeijing 100710China Ulanqab Museum Ulanqab 012000China The Institute of Cultural Relics and Archaeology Hohhot 010011China Department of Geography and Resource Management The Chinese University of Hong KongHong Kong 999077China Key Laboratory of Virtual Geographic Environment(Ministry of Education of PRC) Nanjing Normal UniversityNanjing 210023China School of Geography Nanjing Normal UniversityNanjing 210023China Institute of Environmental Archaeology Nanjing Normal UniversityNanjing 210023China

The origin of agriculture in the farming-pastoral zone of northern China remains in *** central region of the Inner Mongolia Plateau is located in the core area of the farming-pastoral zone;thus,it is a critical region for exploring the origin of the dryland farming system in northern *** study selected the Yumin Site and Banan Site,which belong to the Yumin Culture-the beginning of Neolithic culture in Inner Mongolia-as the research *** on the quartz optically stimulated luminescence(OSL)dating on the sedimentary sections from the Yumin site(YM)and Banan site(BN1 and BN2),the Holocene chronology framework of each section was *** that,by identifying carbonized grains in the Yumin site and the multi-proxy analysis of each section,we investigated the relationship between the origin of agriculture and climate change in this *** results revealed that the timing of the origin of agriculture recorded in the Yumin site lagged behind the timing of a significant increase of precipitation during the early Holocene but coincided with the timing of a significant increase of vegetation around 8.4 *** phenomenon was further confirmed by the published high-resolution paleoenvironmental records from the surrounding area of the Yumin *** propose that with the gradual amelioration of hydrothermal conditions since the beginning of the Holocene,the regional ecosystem had been improved,resulting in the gradual conversion of the land surface from infertile sand to organic-rich soil,providing an appropriate environmental foundation for the origin of dryland farming in northern China around 8.4 *** study highlighted that the“accumulative environmental effects”during the early Holocene played a vital role in the origin of agriculture in northern China and provided a reference for agricultural management in the context of future climate change.

关键词： Origin of agriculture Accumulative environmental effects Yumin Culture Northern China Holocene

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马克斯·布朗利:YouTube的网红测评员

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空中英语教室（高级版．彭蒙惠英语） 2024年第6期 30-31,48,49页

作者： harry McCracken 不详

马克斯·布朗利把我带进他的机器人房间,在那里我与“巨人”面对面。那是一个物如其名、价值25万美元的机械手臂,它气势磅,但又不失优雅,高高地算立在那位身高六尺三寸(约190厘米)的主人面前,他正带我参观位于新泽西州卡尼镇的工作室。

关键词：机械手臂机器人工作室布朗利 YouTube 新泽西州面对面

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告别聚会

疯狂英语（新悦读） 2024年第6期 43-45,76页

作者： harry Gilbert 不详

作品简介:《分享年》(The Year of Sharing)是哈利·吉尔伯特的作品。这本小说讲述了一个关于“分享”的故事。五百年后的世界会是什么样子呢?城市会越变越大吗?楼房、汽车、工厂会不会越来越多?噪声、烟雾、尘土会不会越来越多?那些绿... 详细信息

作品简介:《分享年》(The Year of Sharing)是哈利·吉尔伯特的作品。这本小说讲述了一个关于“分享”的故事。五百年后的世界会是什么样子呢?城市会越变越大吗?楼房、汽车、工厂会不会越来越多?噪声、烟雾、尘土会不会越来越多?那些绿色森林还会存在吗?理查德的未来世界跟这些情况很不一样:那里只有自行车,没有汽车;只有村庄,没有城市;世界上的森林只属于野生动物,那里一直是它们生活的家园。已经12岁的理查德厌倦了乡村的平静生活。他想要一辆汽车,开着它风驰电掣。但是,世界上所有人都必须在12岁的时候履行“分享年”。

关键词：平静生活作品简介吉尔伯特野生动物分享

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全胜夺冠

财新周刊 2024年第29期 14-15页

作者： harry Langer(图) 视觉中国

当地时间2024年7月14日,德国柏林,2024年男足欧洲杯决赛,西班牙队2比1击败英格兰队夺冠,西班牙队球员卡瓦哈尔高举德劳内杯与队友庆祝。本届赛事中,西班牙队七战全胜,先是以头名身份从“死亡之组”中出线,随后在八分之一决赛中轻取格鲁... 详细信息

当地时间2024年7月14日,德国柏林,2024年男足欧洲杯决赛,西班牙队2比1击败英格兰队夺冠,西班牙队球员卡瓦哈尔高举德劳内杯与队友庆祝。本届赛事中,西班牙队七战全胜,先是以头名身份从“死亡之组”中出线,随后在八分之一决赛中轻取格鲁吉亚队,并接连淘汰夺冠热门德国队和法国队闯入决赛。

关键词：西班牙队英格兰队德国队法国队欧洲杯格鲁吉亚男足赛事