Results 51 to 60 of about 4,945 (221)
Theoretical Research of the Modification of Cycloidal Gear Used in High Precision RV Reducer
Jixie chuandong, 2018 The second-order logarithmic superposition of modification quantity along the normal direction to the theory of conjugate tooth profile of cycloid gear of RV reducer is carried out,the cycloid tooth profile equation after the modification is deduced.
Ke Qingxun +5 more
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Severity of periodontitis and risk of ischemic stroke: A systematic review and meta‐analysis
Journal of Periodontology, EarlyView.Abstract Background Periodontitis is a prevalent chronic inflammatory disease with a systemic inflammatory burden and is implicated with vascular pathology. This systematic review and meta‐analysis evaluates the association between varying severities of periodontitis and ischemic stroke with various diagnostic criteria.
Steven Sitt +2 more
wiley +1 more source
Theory of Tooth Profile of New Type of Movable Gear Drive Mechanism based on Cam Mechanism
Jixie chuandong, 2018 Based on the transmission principle of the positive-drive cam mechanism,the tooth profile theory of a new type of liner-movable-gear-drive-mechanism with arbitrary tooth difference is proposed.The tooth profile equation of the shock wave and the center ...
Yang Yang, Sun Shoulin
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Association between xerostomia and peri‐implant health: A retrospective cohort study
Journal of Periodontology, EarlyView.Abstract Background Dental implants are a long‐term and reliable solution to replace missing dentition, but subject to different patient‐related and biological changes that could alter its success. Xerostomia, or the alteration of the normal salivary flow, can impair oral function and potentially affect the success of any treatment, including implant ...
Shahad Alhazmi +6 more
wiley +1 more source
Jixie chuandong, 2008 Based on the mesh principle and differential coefficient geometry,the tooth profile equation and mesh trace for gear with arc tooth profile are derived.By simulation of mesh trace,it proves that the main parametors of influencing the mesh trace are the ...
孟凡净, 周哲波
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Journal of Periodontology, EarlyView.Abstract Background Population‐level evidence on associated factors for mid‐buccal gingival recession (GR) severity stratified by periodontitis status remains limited. This study assessed the prevalence and severity of GR in United States (US) adults and identified associated factors.
Felix Marschner +4 more
wiley +1 more source
Jixie chuandong, 2009 A new kind of swing movable tooth transmission mechanism with double internal tooth profile,or double external tooth profile is designed.Its structural stetch is given and the principle of movement is introduced.Then two types of parametric equations of ...
季鹏凯
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Journal of Quaternary Science, EarlyView.ABSTRACT Enamel hypoplasia results from temporary disruptions of enamel deposition during tooth development. It is widely used as an indicator of physiological stress in archeological and paleontological contexts; yet, its relationship with environmental conditions during tooth formation remains poorly constrained.
Giuseppe Briatico +3 more
wiley +1 more source
Research of Design Method of Bevel Gear Tooth Profile based on Conical Involute
Jixie chuandong, 2016 In order to making the tooth profile of bevel gear be close to its theoretical spherical involute,a design method of the tooth profile of bevel gear using conical involute is proposed,that is forming the involute tooth profile of bevel gears on the back ...
Hou Hongling, Xing Si, Shu Linsen
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Recent Advances in Exosome‐Based Nanodelivery Systems for Traumatic Brain Injury Treatment
Med Research, EarlyView.An overview of functional modification, therapeutic effects, molecular composition, and delivery strategies for exosomes. ABSTRACT Traumatic brain injury (TBI) is a highly heterogeneous neurological condition with extremely high rates of mortality and disability.
Jue Zhu +9 more
wiley +1 more source