Results 141 to 150 of about 2,685,330 (268)

Influence of Radial Deformation of Cam on Profile Modification in Harmonic Drive

Jixie chuandong, 2019
In order to solve the interference between the rigid wheel and the flexible wheel tooth profile caused by the theoretical value of the cam radial deformation is inconsistent with the reality in the harmonic drive， taking the double arc harmonic gear ...
Qianqian Jiang, An Gong, Xiaofeng Li, Lei Zhang, Junyang Li   +4 more
doaj  

Association of periodontitis with incidence of metabolic syndrome in Korea: A retrospective cohort study

Journal of Periodontology, EarlyView.
Abstract Background Although periodontitis has been linked to systemic conditions such as metabolic syndrome, longitudinal evidence remains limited. This nationwide population‐based cohort study aimed to investigate whether periodontal status is associated with the incidence of metabolic syndrome in Korea.
SeoYeon Hwang, Hae‐Young Kim, Sangwook Kang, Junesun Kim, Sunmi Song, Gum‐Ryeong Park   +5 more
wiley   +1 more source

A strength reliability calculation method of tip relief gears. [PDF]

PLoS One
Wang H, Xiao J, Yin L, Hu B, Liu H.
europepmc   +1 more source

Research on Theories and New Technologies of Gear Tooth Profile Modification

Jixie chuandong, 1994
本文对齿轮修形进行了理论探讨；引入微机系统来研究非均匀电场的分布规律及其控制机理；控制非均匀电场的分布，对大量齿轮进行了系统的电化学修缘工艺及性能对比实验；得到了满意的结果。
openaire   +1 more source

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, Chloe J. Chang, Chin‐Wei Wang   +2 more
wiley   +1 more source

Review on thread profile modification methods for the planetary roller screw mechanism. [PDF]

iScience
Sun Y, Zhang K, Shi Z, Xie G, Lv X, Cheng H, Tang Z.   +6 more
europepmc   +1 more source

Integrating ZooMS and taphonomy further highlights differential processing of animal and Neandertal carcasses in the Quina Mousterian at Les Pradelles (Marillac‐le‐Franc, southwest France)

Journal of Quaternary Science, EarlyView.
ABSTRACT The cave of Les Pradelles (Marillac‐le‐Franc, France) was repeatedly visited by Neandertals ~55 000 years ago and is a key site in discussions of Neandertal cannibalism. Excavations between 1967 and 1980 (Vandermeersch) and between 2001 and 2013 (Maureille/Mann) produced a rich faunal assemblage (>20 000 bones), alongside Quina Mousterian ...
Pauline Raymond, Jean‐Jacques Hublin, Karen Ruebens, Geoff M. Smith, Sandrine Costamagno, Cédric Beauval, Alan Mann, Bruno Maureille   +7 more
wiley   +1 more source

Research Progress on Mechanical Properties and Fatigue Failure of Harmonic Drive Flexspline. [PDF]

Sensors (Basel)
Lian X, Liu J, Li Y, Li W.
europepmc   +1 more source

Dental enamel hypoplasia and intra‐tooth isotope records as indicators of physiological stress and environmental variability in Early Pleistocene hippopotamids from Melka Kunture (Upper Awash, Ethiopia)

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, Denis Geraads, Rita T. Melis, Margherita Mussi   +3 more
wiley   +1 more source

The "B.U.M.P." Concept: Combined Prosthetic and Surgical Approach in Esthetic Immediate Implant Placement. A Case Report. [PDF]

Healthcare (Basel)
Dallari G, Bentivogli V, Esquivel J, Sangiorgi M, Mounssif I, Breschi L, Zucchelli G, Stefanini M.   +7 more
europepmc   +1 more source