Experimental Study on the Influences of Backlash and Elastic Deformation on the Bidirectional Operation Characteristic of Gearbox by Li Youhua, Liu Zhongming, Zhang Zhihong, Li Jiqiang, Liu Yuechan, Yu Feipeng

“…The gearbox of rack test for the Three Gorges ship lift is low speed heavy duty four stages transmission,and need frequent fast reversing operation in the process of test,due to the influence of the gear meshing backlash,elastic torsional deformation of shaft and elastic deformation of gear tooth and other factors,the operation performance of gearbox will be changed during reversing process,especially the output speed and torque. …”
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Combined Periodontal and Endodontic Management of Palatal Radicular Groove with Platelet-Rich Fibrin and Biodentine® by Arjun Hari Rijal, Bhageshwar Dhami, Pratistha Ghimire

“…Success of the therapy depends on the type, depth, and extent of PRG, presence or absence of intrabony defect, vitality of involved tooth, and types of materials used to seal PRG. This study reports management of PRG with Biodentine® and platelet-rich fibrin in a 44-year-old systemically healthy female patient.…”
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Active Design Technology of Pinion Surface for Aviation Spiral Bevel Gear based on Actual Condition by Chen Guangyan, Wang Jinhua, Cai Xiangwei

“…The misalignment causes the contact pattern to deviate from the ideal position,at the same time,the transmission error curve also changes,which result in the irregular running,vibration,shock of gear set.Therefore,according to the deviation of the contact pattern to identify the equivalent misalignment,feed it into the tooth surface design,this technology has important engineering significance for improving the meshing quality of gear pair under actual conditions.…”
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Modification and Optimization Design of Motor Train Unit Transmission Gear based on KISSsoft by Fan Naize, Tian Huajun, Pei Bang, Ning Ke, Zhao Jiadong, Liu Zhongming, Guan Rongxin, Liu Jianliang, Xu Hui

“…Then,the difference between before and after the modification of gear meshing contact spot,tooth surface line load distribution and the transmission error,etc are compared to ensure the motor train unit gear transmission system working more stable and reliable. …”
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Dynamics Simulation and Modeling of Double Circular Arc Spiral Bevel Gear based on UG and ADAMS by Zhang Yufeng, Wu Baolin

“…Based on tooth surface equation of double circular arc spiral bevel gear,using the three- dimensional modeling software of UG,the three- dimensional parametric modeling of double circular arc spiral bevel gear and the virtual assembling of the active gear and the driven gear in the UG is realized. …”
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Performance Analysis and Design of Oval Gear Pair with Double Meshing Angle by Zhao Xiangyang, Du Yanxia

“…In order to enhance the bearing capacity,the double generating angle tooth profile for the oval gear pair used in unidirectional and continuous transmission occasion is designed. …”
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Rehabilitation of a Child with Denari Prosthesis after Dental Avulsion by César Sebastián Arcos-López, Juan Marcos Parise-Vasco, Ana Armas-Vega, Yecenia Carrillo-Azuero

“…The avoidance of opposing tooth extrusion, loss of horizontal space, and acquisition of bad oral habits are fundamental to not trigger alterations in the child’s occlusal development and psychological development. …”
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L’anticommunisme, l’autre moteur de Jean-Marie Le Pen by Adrian Thomas

“…Throughout his career, whether in Vietnam or in the Palais Bourbon, Le Pen was convinced that he was fighting Bolshevism and its avatars tooth and nail, be they student trade unionists, Algerian independence fighters or militants of the left-wing union in all its plurality. …”
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Fault Diagnosis of Gear based on Translation Invariant Multiwavelet Transform by Hua Wei, Xing Zhigang, Jing Shuangxi

“…Then the method is applied to the signal analysis of gearbox test bed,the experimental results show that the impact feature frequency of broken tooth gearbox can be effectively extracted through the translation invariant multiwavelet denoising method and broken teeth fault can be diagnosed,an accurate basis for fault diagnosis is provided. …”
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Thermal- structure Coupling Effect and Analysis of Gear Transmission by Wang Wei, Li Jianmin, Chen Huanguo, Pan Xiaodong, Sun Bin, Zhou Xinteng, Lin Feng

“…The relative friction surface in the process of the heavy duty gear transmission will generate a lot of heat cause tooth surface temperature rising,increased stress,reduced reliability,but the heat flow boundary load area can’t be precisely determined by using indirect coupling method. …”
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Shade Selection, a Key to Esthetics by Shruti Deepak Jadhav, Varsha Sanjay Pandit, Ashwini Avinash Gaikwad, Vinaya Prabhanjan Ingale, Rajlaxmi Pradeep Patil, Mineet Satish Kaul

“…The following article sheds light on various methods of shade selection and which method is superior in matching the shade as close to that of the natural tooth color.…”
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Optimal Design of the Fuzzy Reliability of Double Circular Arc Gear based on MATLAB by Wang Chunyan, Ji Bin, Fu Jianwei

“…Taking the double arc gear in the national standard GB/T12759-1991 as the analysis object,by using the theory of fuzzy mathematics and reliability optimization design method,considering arc gear transmission allowable stress randomness and fuzziness,taking the fuzzy reliability of arc gear bending modulus strength and contact strength and the modulus,tooth number,helix angle,longitudinal coincidence degree of gear as constraint condition,a minimum volume of arc gear optimization as target,the fuzzy reliability optimum design model of double arc gear is established,and a practical example is given,the results indicate that,the circular gear design with fuzzy reliability optimization design method has better rationality.…”
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Design of Key Joint Reducer for Heavy-duty Teleoperation Manipulator by Zhou Zhenguo, Bai Xiaowei, Zhou Zibo

“…The 2 K-H NN multi-planetary gear mechanism is used as a model to analyze the constraints and design conditions. The number of tooth combinations satisfying the conditions are selected through programming and the calculation of the load on dangerous gear and transmission efficiency is verified. …”
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Conservative Treatment of a Large Facial Midroot Perforation by Stephane Kerner, François Bronnec

“…To report on the endodontic and periodontal management of a root and alveolar process perforation in a maxillary front tooth. Summary. Perforation during access cavity preparation is an infrequent complication during endodontic therapy, leading to potential periodontal tissue breakdown. …”
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Gear Whine Optimization Design of Diesel Engine Timing Gear System by Zeng Xiaochun, Zhao Zhisheng, Wang Yi, Wei Tao, Huang Xiupeng, Zheng Guangze

“…The optimization of gear modification is put into effect and the experiment data show that this modification method can reduce the gear whine by controlling the convex curve on top profile, concave at center gear surface and tooth flank waviness.…”
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Design of Hybrid-driving Transmission System of Hobbing Machine by Tan Weiming

“…An inner-linked transmission train based on hybrid- driving is proposed for the gear generating transmission train of the hobbing machine to solve the two main problems of gear generation and helix differential in designing transmission system of the hobbing machine.By using a 2 DOF differential gear mechanism as the motion composition mechanism,a mechanical transmission movement and an electronic- driven movement are combined to achieve combination of rough adjustment and fine adjustment.Based on the method of hybrid- driving,the transmission system of the hobbing machine is designed in details,with its hobbed gear tooth numbers being 11¹10.According to the design result,the requests for generating motion in gear hobbing machine could be satisfied.…”
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Analysis and Simulation of Meshing Force of Main Chain Drive in Baling Process of Round Baler by Lü Beixuan, Chen Yuren

“…An approximate equation of sprocket meshing force is derived,under the condition of the local deformation before and after a single roller engaged with the tooth. Taking the main chain drive of a certain round balers as the research object,the dynamic characteristics and meshing force of main chain transmission system with multi-driven wheels in baling process of round balers under the condition of actual load torque are obtained through the simulation,the dynamics characterization of the chain drive system is analyzed and the validity of the model is verified,which present a certain operational method for actual agricultural machinery design.…”
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Modeling and Experimental Analysis of Grinding Surface Roughness of Face Gear by Ming Xingzu, Gao Qin, Xiao Lei, Long Yu, Liu Jinhua

“…The mathematical model of face gear grinding disc wheel is established according to the gear tooth surface formation mechanism analysis of surface roughness and morphology analysis of the disc wheel surface. …”
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Late Developing Supernumerary Premolars: Reports of Two Cases by Soghra Yassaei, Mahdjoube Goldani Moghadam, S. M. Ali Tabatabaei

“…The patient was made aware of the supernumerary tooth presence, and periodic radiographic assessment was planned.…”
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Research on NC Milling Process of Worm Gears based on Generating Method by Hongyu Han, Aijing Li, Leijie Wang, Yingliang Yu

“…The proportional relationship between the rotation of one turn of the worm gear hob and the rotation of one tooth of the worm gear workpiece is realized by extending the function of thread instruction and taper thread instruction. …”
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